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-rw-r--r--src/LYUtils.c8042
1 files changed, 8042 insertions, 0 deletions
diff --git a/src/LYUtils.c b/src/LYUtils.c
new file mode 100644
index 0000000..414fb26
--- /dev/null
+++ b/src/LYUtils.c
@@ -0,0 +1,8042 @@
+/*
+ * $LynxId: LYUtils.c,v 1.301 2022/07/25 07:52:04 tom Exp $
+ */
+#include <HTUtils.h>
+#include <HTTCP.h>
+#include <HTParse.h>
+#include <HTAccess.h>
+#include <HTCJK.h>
+#include <HTAlert.h>
+
+#if defined(__MINGW32__)
+
+extern int kbhit(void); /* FIXME: use conio.h */
+
+#undef UNIX
+
+#elif defined(_WINDOWS)
+
+#ifdef DONT_USE_GETTEXT
+#undef gettext
+#elif defined(HAVE_GETTEXT)
+#undef gettext
+#define gettext conio_gettext
+#else
+#undef gettext
+#endif
+
+#include <conio.h>
+
+#ifdef DONT_USE_GETTEXT
+#define gettext(s) s
+#elif defined(HAVE_GETTEXT)
+#undef gettext
+#ifdef _INTL_REDIRECT_MACROS
+#define gettext libintl_gettext /* restore definition from libintl.h */
+#endif
+#else
+#undef gettext
+#define gettext(s) s
+#endif
+
+#if !defined(kbhit) && defined(_WCONIO_DEFINED)
+#define kbhit() _kbhit() /* reasonably recent conio.h */
+#endif
+#elif defined(__minix)
+#include <termios.h> /* for struct winsize */
+
+#endif /* __MINGW32__ */
+
+#include <LYCurses.h>
+#include <LYHistory.h>
+#include <LYStrings.h>
+#include <LYGlobalDefs.h>
+#include <LYUtils.h>
+#include <LYSignal.h>
+#include <GridText.h>
+#include <LYClean.h>
+#include <LYCharSets.h>
+#include <LYCharUtils.h>
+
+#include <LYMainLoop.h>
+#include <LYKeymap.h>
+
+#ifdef __DJGPP__
+#include <go32.h>
+#include <sys/exceptn.h>
+#endif /* __DJGPP__ */
+
+#ifndef NO_GROUPS
+#include <HTFile.h>
+#endif
+
+#ifdef _WINDOWS /* 1998/04/30 (Thu) 19:04:25 */
+#define GETPID() (unsigned) (getpid() & 0xffff)
+#else
+#define GETPID() (unsigned) getpid()
+#endif /* _WINDOWS */
+
+#ifdef FNAMES_8_3
+#define PID_FMT "%04x"
+#else
+#define PID_FMT "%u"
+#endif
+
+#ifdef DJGPP_KEYHANDLER
+#include <bios.h>
+#endif /* DJGPP_KEYHANDLER */
+
+#ifdef __EMX__
+# define BOOLEAN OS2_BOOLEAN /* Conflicts, but is used */
+# undef HT_ERROR /* Conflicts too */
+# define INCL_PM /* I want some PM functions.. */
+# define INCL_DOSPROCESS /* TIB PIB. */
+# include <os2.h>
+# undef BOOLEAN
+#endif
+
+#ifdef VMS
+#include <descrip.h>
+#include <libclidef.h>
+#include <lib$routines.h>
+#endif /* VMS */
+
+#ifdef HAVE_UTMP
+#include <pwd.h>
+#ifdef UTMPX_FOR_UTMP
+#include <utmpx.h>
+#define utmp utmpx
+#ifdef UTMPX_FILE
+#ifdef UTMP_FILE
+#undef UTMP_FILE
+#endif /* UTMP_FILE */
+#define UTMP_FILE UTMPX_FILE
+#else
+#ifdef __UTMPX_FILE
+#define UTMP_FILE __UTMPX_FILE /* at least in OS/390 S/390 -- gil -- 2100 */
+#else
+#ifndef UTMP_FILE
+#define UTMP_FILE "/var/adm/utmpx" /* Digital Unix 4.0 */
+#endif
+#endif
+#endif /* UTMPX_FILE */
+#else
+#include <utmp.h>
+#endif /* UTMPX_FOR_UTMP */
+#endif /* HAVE_UTMP */
+
+#ifdef NEED_PTEM_H
+/* they neglected to define struct winsize in termios.h -- it's only in
+ * termio.h and ptem.h (the former conflicts with other definitions).
+ */
+#include <sys/stream.h>
+#include <sys/ptem.h>
+#endif
+
+#include <LYLeaks.h>
+
+#ifdef USE_COLOR_STYLE
+#include <AttrList.h>
+#include <LYHash.h>
+#include <LYStyle.h>
+#endif
+
+#ifdef SVR4_BSDSELECT
+extern int BSDselect(int nfds, fd_set * readfds, fd_set * writefds,
+ fd_set * exceptfds, struct timeval *timeout);
+
+#ifdef select
+#undef select
+#endif /* select */
+#define select BSDselect
+#ifdef SOCKS
+#ifdef Rselect
+#undef Rselect
+#endif /* Rselect */
+#define Rselect BSDselect
+#endif /* SOCKS */
+#endif /* SVR4_BSDSELECT */
+
+#ifdef __DJGPP__
+#undef select /* defined to select_s in www_tcp.h */
+#endif
+
+#ifndef UTMP_FILE
+#if defined(__FreeBSD__) || defined(__bsdi__)
+#define UTMP_FILE _PATH_UTMP
+#else
+#define UTMP_FILE "/etc/utmp"
+#endif /* __FreeBSD__ || __bsdi__ */
+#endif /* !UTMP_FILE */
+
+/*
+ * experimental - make temporary filenames random to make the scheme less
+ * obvious. However, as noted by KW, there are instances (such as the
+ * 'O'ption page, for which Lynx will store a temporary filename even when
+ * it no longer applies, since it will reuse that filename at a later time.
+ */
+#ifdef USE_RAND_TEMPNAME
+#if defined(LYNX_RAND_MAX)
+#define HAVE_RAND_TEMPNAME 1
+#define MAX_TEMPNAME 10000
+#ifndef BITS_PER_CHAR
+#define BITS_PER_CHAR 8
+#endif
+#endif
+#endif
+
+#define COPY_COMMAND "%s %s %s"
+
+static HTList *localhost_aliases = NULL; /* Hosts to treat as local */
+static char *HomeDir = NULL; /* HOME directory */
+
+HTList *sug_filenames = NULL; /* Suggested filenames */
+
+/*
+ * Maintain a list of all of the temp-files we create so that we can remove
+ * them during the cleanup.
+ */
+typedef struct _LYTemp {
+ struct _LYTemp *next;
+ char *name;
+ BOOLEAN outs;
+ FILE *file;
+} LY_TEMP;
+
+static LY_TEMP *ly_temp;
+
+static LY_TEMP *FindTempfileByName(const char *name)
+{
+ LY_TEMP *p;
+
+ for (p = ly_temp; p != 0; p = p->next) {
+ if (!strcmp(p->name, name)) {
+ break;
+ }
+ }
+ return p;
+}
+
+static LY_TEMP *FindTempfileByFP(FILE *fp)
+{
+ LY_TEMP *p;
+
+ for (p = ly_temp; p != 0; p = p->next) {
+ if (p->file == fp) {
+ break;
+ }
+ }
+ return p;
+}
+
+#if defined(_WIN32)
+/*
+ * Use RegQueryValueExA() rather than RegQueryValueEx() for compatibility
+ * with non-Unicode winvile
+ */
+static int w32_get_reg_sz(HKEY hkey, const char *name, char *value, unsigned length)
+{
+ int result;
+ DWORD dwSzBuffer = length;
+
+ CTRACE((tfp, "w32_get_reg_sz(%s)\n", name));
+ result = RegQueryValueExA(hkey,
+ name,
+ NULL,
+ NULL,
+ (LPBYTE) value,
+ &dwSzBuffer);
+ if (result == ERROR_SUCCESS) {
+ value[dwSzBuffer] = 0;
+ CTRACE((tfp, "->%s\n", value));
+ }
+ return result;
+}
+
+static char *w32_get_shell_folder(const char *name)
+{
+ static HKEY rootkey = HKEY_CURRENT_USER;
+
+ char *result = 0;
+ HKEY hkey;
+ char buffer[LY_MAXPATH];
+
+ if (RegOpenKeyEx(rootkey,
+ W32_STRING("Software"
+ "\\Microsoft"
+ "\\Windows"
+ "\\CurrentVersion"
+ "\\Explorer"
+ "\\Shell Folders"),
+ 0,
+ KEY_READ,
+ &hkey) == ERROR_SUCCESS) {
+ if (w32_get_reg_sz(hkey, name, buffer, sizeof(buffer)) == ERROR_SUCCESS) {
+
+ result = strdup(buffer);
+ (void) RegCloseKey(hkey);
+ }
+
+ (void) RegCloseKey(hkey);
+ }
+ return non_empty(result) ? result : 0;
+}
+#endif
+
+/*
+ * Get an environment variable, rejecting empty strings
+ */
+char *LYGetEnv(const char *name)
+{
+ char *result = getenv(name);
+
+#if defined(_WIN32)
+ if (result == 0) {
+ static HKEY rootkeys[] =
+ {HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE};
+
+ int j;
+ HKEY hkey;
+ char buffer[256];
+
+ for (j = 0; j < (int) TABLESIZE(rootkeys); ++j) {
+ if (RegOpenKeyEx(rootkeys[j],
+ LYNX_SUBKEY W32_STRING("\\Environment"),
+ 0,
+ KEY_READ,
+ &hkey) == ERROR_SUCCESS) {
+ if (w32_get_reg_sz(hkey, name, buffer, sizeof(buffer)) == ERROR_SUCCESS) {
+
+ result = strdup(buffer);
+ (void) RegCloseKey(hkey);
+ break;
+ }
+
+ (void) RegCloseKey(hkey);
+ }
+ }
+ }
+#endif
+ return non_empty(result) ? result : 0;
+}
+
+/*
+ * ascii versions of locale sensitive functions needed because in
+ * Turkish locales tolower("I") is not "i". That's fatal for case
+ * sensitive operations with charset names, HTML tags etc.
+ */
+#ifdef USE_ASCII_CTYPES
+int ascii_tolower(int i)
+{
+ if (91 > i && i > 64)
+ return (i + 32);
+ else
+ return i;
+}
+
+int ascii_toupper(int i)
+{
+ if (123 > i && i > 96)
+ return (i - 32);
+ else
+ return i;
+}
+
+int ascii_isupper(int i)
+{
+ if (91 > i && i > 64)
+ return 1;
+ else
+ return 0;
+}
+#endif /* USE_ASCII_CTYPES */
+
+/*
+ * Check for UTF-8 data, returning the length past the first character.
+ * Return zero if we found an ordinary character rather than UTF-8.
+ */
+size_t utf8_length(int utf_flag,
+ const char *data)
+{
+ size_t utf_extra = 0;
+
+ if (utf_flag && is8bits(*data)) {
+ if ((*data & 0xe0) == 0xc0) {
+ utf_extra = 1;
+ } else if ((*data & 0xf0) == 0xe0) {
+ utf_extra = 2;
+ } else if ((*data & 0xf8) == 0xf0) {
+ utf_extra = 3;
+ } else if ((*data & 0xfc) == 0xf8) {
+ utf_extra = 4;
+ } else if ((*data & 0xfe) == 0xfc) {
+ utf_extra = 5;
+ } else {
+ /*
+ * Garbage.
+ */
+ utf_extra = 0;
+ }
+ if (strlen(data + 1) < utf_extra) {
+ /*
+ * Shouldn't happen.
+ */
+ utf_extra = 0;
+ }
+ }
+ return utf_extra;
+}
+
+/*
+ * Free storage used for the link-highlighting.
+ */
+void LYFreeHilites(int first, int last)
+{
+ int i;
+
+ for (i = first; i < last; i++) {
+ LYSetHilite(i, NULL);
+ FREE(links[i].lname);
+ }
+}
+
+#define LXP (links[cur].lx)
+#define LYP (links[cur].ly)
+
+/*
+ * Set the initial highlight information for a given link.
+ */
+void LYSetHilite(int cur,
+ const char *text)
+{
+ links[cur].list.hl_base.hl_text = DeConst(text);
+ links[cur].list.hl_len = (short) ((text != NULL) ? 1 : 0);
+ FREE(links[cur].list.hl_info);
+}
+
+/*
+ * Add highlight information for the next line of a link.
+ */
+void LYAddHilite(int cur,
+ char *text,
+ int x)
+{
+ HiliteList *list = &(links[cur].list);
+ HiliteInfo *have = list->hl_info;
+ size_t need = (unsigned) (list->hl_len - 1);
+ size_t want;
+
+ list->hl_len = (short) (list->hl_len + 1);
+ want = (size_t) list->hl_len;
+
+ if (have != NULL) {
+ have = typeRealloc(HiliteInfo, have, want);
+ } else {
+ have = typeMallocn(HiliteInfo, want);
+ }
+ list->hl_info = have;
+ have[need].hl_text = text;
+ have[need].hl_x = (short) x;
+}
+
+/*
+ * Get the highlight text, counting from zero.
+ */
+const char *LYGetHiliteStr(int cur,
+ int count)
+{
+ const char *result;
+
+ if (count >= links[cur].list.hl_len)
+ result = NULL;
+ else if (count > 0)
+ result = links[cur].list.hl_info[count - 1].hl_text;
+ else
+ result = links[cur].list.hl_base.hl_text;
+ return result;
+}
+
+/*
+ * Get the X-ordinate at which to draw the corresponding highlight-text
+ */
+int LYGetHilitePos(int cur,
+ int count)
+{
+ int result;
+
+ if (count >= links[cur].list.hl_len)
+ result = -1;
+ else if (count > 0)
+ result = links[cur].list.hl_info[count - 1].hl_x;
+ else
+ result = LXP;
+ return result;
+}
+
+#ifdef SHOW_WHEREIS_TARGETS
+
+#define SKIP_GLYPHS(theFlag, theData, theOffset) \
+ (theFlag \
+ ? LYmbcs_skip_glyphs(theData, (theOffset), theFlag) \
+ : (theData + (theOffset)))
+
+/*
+ * If we have an emphasized WHEREIS hit in the highlighted text, restore the
+ * emphasis. Note that we never emphasize the first and last characters of the
+ * highlighted text when we are making the link current, so the link attributes
+ * for the current link will persist at the beginning and end, providing an
+ * indication to the user that it has been made current. Also note that we use
+ * HText_getFirstTargetInLine() to determine if there's a hit in the HText
+ * structure line containing the link, and if so, get back a copy of the line
+ * starting at that first hit (which might be before or after our link), and
+ * with all IsSpecial characters stripped, so we don't need to deal with them
+ * here. -FM
+ */
+static BOOL show_whereis_targets(int flag,
+ int cur,
+ int count,
+ const char *target,
+ int TargetEmphasisON,
+ int utf_flag)
+{
+ const char *mydata = NULL;
+ const char *cp;
+ char *theData = NULL;
+ char buffer[MAX_LINE];
+ char tmp[7];
+ int HitOffset;
+ int LenNeeded;
+ int Offset;
+ int tLen;
+
+ tmp[0] = tmp[1] = tmp[2] = '\0';
+
+ if (non_empty(target)
+ && (links[cur].type & WWW_LINK_TYPE)
+ && non_empty(LYGetHiliteStr(cur, count))
+ && LYP + count < display_lines
+ && HText_getFirstTargetInLine(HTMainText,
+ links[cur].anchor_line_num + count,
+ utf_flag,
+ &Offset,
+ &tLen,
+ &theData,
+ target)) {
+ int itmp, written, len, y, offset;
+ const char *data;
+ int tlen = (int) strlen(target);
+ int hlen, hLen;
+ int hLine = LYP + count;
+ int hoffset = LYGetHilitePos(cur, count);
+ size_t utf_extra = 0;
+
+ /*
+ * Copy into the buffer only what will fit up to the right border of
+ * the screen. -FM
+ */
+ LYmbcsstrncpy(buffer,
+ NonNull(LYGetHiliteStr(cur, count)),
+ (int) (sizeof(buffer) - 1),
+ (LYcolLimit - LYGetHilitePos(cur, count)),
+ utf_flag);
+ hlen = (int) strlen(buffer);
+ hLen = ((IS_CJK_TTY || utf_flag) ?
+ LYmbcsstrlen(buffer, utf_flag, YES) : hlen);
+
+ /*
+ * Break out if the first hit in the line starts after this link. -FM
+ */
+ if (Offset < (hoffset + hLen)) {
+ /*
+ * Recursively skip hits that end before this link, and break out
+ * if there is no hit beyond those. -FM
+ */
+ mydata = theData;
+ while ((Offset < hoffset) &&
+ ((Offset + tLen) <= hoffset)) {
+ data = (mydata + tlen);
+ offset = (Offset + tLen);
+ if (((cp = LYno_attr_mb_strstr(data,
+ target,
+ utf_flag, YES,
+ &HitOffset,
+ &LenNeeded)) != NULL)
+ && (offset + LenNeeded) < LYcols) {
+ mydata = cp;
+ Offset = (offset + HitOffset);
+ } else {
+ goto highlight_search_done;
+ }
+ }
+ data = buffer;
+ offset = hoffset;
+
+ /*
+ * If the hit starts before the hightext, and ends in or beyond the
+ * hightext, restore the emphasis, skipping the first and last
+ * characters of the hightext if we're making the link current.
+ * -FM
+ */
+ if (offset >= 0 &&
+ (Offset < offset) &&
+ ((Offset + tLen) > offset)) {
+ itmp = 0;
+ written = 0;
+ len = (tlen - (offset - Offset));
+
+ /*
+ * Go to the start of the hightext and handle its first
+ * character. -FM
+ */
+ LYmove(hLine, offset);
+ tmp[0] = data[itmp];
+ utf_extra = utf8_length(utf_flag, data + itmp);
+ if (utf_extra) {
+ LYStrNCpy(&tmp[1], &data[itmp + 1], utf_extra);
+ itmp += (int) utf_extra;
+ /*
+ * Start emphasis immediately if we are making the link
+ * non-current. -FM
+ */
+ if (flag != TRUE) {
+ LYstartTargetEmphasis();
+ TargetEmphasisON = TRUE;
+ LYaddstr(tmp);
+ } else {
+ LYmove(hLine, (offset + 1));
+ }
+ tmp[1] = '\0';
+ written += (int) (utf_extra + 1);
+ } else if (IS_CJK_TTY && is8bits(tmp[0])) {
+ /*
+ * For CJK strings, by Masanobu Kimura.
+ */
+ tmp[1] = data[++itmp];
+ /*
+ * Start emphasis immediately if we are making the link
+ * non-current. -FM
+ */
+ if (flag != TRUE) {
+ LYstartTargetEmphasis();
+ TargetEmphasisON = TRUE;
+ LYaddstr(tmp);
+ } else {
+ LYmove(hLine, (offset + 1));
+ }
+ tmp[1] = '\0';
+ written += 2;
+ } else {
+ /*
+ * Start emphasis immediately if we are making the link
+ * non-current. -FM
+ */
+ if (flag != TRUE) {
+ LYstartTargetEmphasis();
+ TargetEmphasisON = TRUE;
+ LYaddstr(tmp);
+ } else {
+ LYmove(hLine, (offset + 1));
+ }
+ written++;
+ }
+ itmp++;
+ /*
+ * Start emphasis after the first character if we are making
+ * the link current and this is not the last character. -FM
+ */
+ if (!TargetEmphasisON &&
+ data[itmp] != '\0') {
+ LYstartTargetEmphasis();
+ TargetEmphasisON = TRUE;
+ }
+
+ /*
+ * Handle the remaining characters. -FM
+ */
+ for (;
+ written < len && (tmp[0] = data[itmp]) != '\0';
+ itmp++) {
+ /*
+ * Print all the other target chars, except the last
+ * character if it is also the last character of hightext
+ * and we are making the link current. -FM
+ */
+ utf_extra = utf8_length(utf_flag, data + itmp);
+ if (utf_extra) {
+ LYStrNCpy(&tmp[1], &data[itmp + 1], utf_extra);
+ itmp += (int) utf_extra;
+ /*
+ * Make sure we don't restore emphasis to the last
+ * character of hightext if we are making the link
+ * current. -FM
+ */
+ if (flag == TRUE && data[(itmp + 1)] == '\0') {
+ LYstopTargetEmphasis();
+ TargetEmphasisON = FALSE;
+ LYGetYX(y, offset);
+ (void) y;
+ LYmove(hLine, (offset + 1));
+ } else {
+ LYaddstr(tmp);
+ }
+ tmp[1] = '\0';
+ written += (int) (utf_extra + 1);
+ } else if (IS_CJK_TTY && is8bits(tmp[0])) {
+ /*
+ * For CJK strings, by Masanobu Kimura.
+ */
+ tmp[1] = data[++itmp];
+ /*
+ * Make sure we don't restore emphasis to the last
+ * character of hightext if we are making the link
+ * current. -FM
+ */
+ if (flag == TRUE && data[(itmp + 1)] == '\0') {
+ LYstopTargetEmphasis();
+ TargetEmphasisON = FALSE;
+ LYGetYX(y, offset);
+ LYmove(hLine, (offset + 1));
+ } else {
+ LYaddstr(tmp);
+ }
+ tmp[1] = '\0';
+ written += 2;
+ } else {
+ /*
+ * Make sure we don't restore emphasis to the last
+ * character of hightext if we are making the link
+ * current. -FM
+ */
+ if (flag == TRUE && data[(itmp + 1)] == '\0') {
+ LYstopTargetEmphasis();
+ TargetEmphasisON = FALSE;
+ LYGetYX(y, offset);
+ LYmove(hLine, (offset + 1));
+ } else {
+ LYaddstr(tmp);
+ }
+ written++;
+ }
+ }
+
+ /*
+ * Stop the emphasis if we haven't already, then reset the
+ * offset to our current position in the line, and if that is
+ * beyond the link, or or we are making the link current and it
+ * is the last character of the hightext, we are done. -FM
+ */
+ if (TargetEmphasisON) {
+ LYstopTargetEmphasis();
+ TargetEmphasisON = FALSE;
+ }
+ LYGetYX(y, offset);
+ if (offset < (hoffset + (flag == TRUE ? (hLen - 1) : hLen))
+ /*
+ * See if we have another hit that starts within the
+ * hightext. -FM
+ */
+ && ((cp =
+ LYno_attr_mb_strstr(data = SKIP_GLYPHS(utf_flag,
+ mydata,
+ offset - Offset),
+ target,
+ utf_flag, YES,
+ &HitOffset,
+ &LenNeeded)) != NULL)
+ && (offset + LenNeeded) < LYcols
+ /*
+ * If the hit starts after the end of the hightext, or we
+ * are making the link current and the hit starts at its
+ * last character, we are done. -FM
+ */
+ && (HitOffset + offset) <
+ (hoffset +
+ (flag == TRUE ? (hLen - 1) : hLen))) {
+ /*
+ * Set up the data and offset for the hit, and let the code
+ * for within hightext hits handle it. -FM
+ */
+ mydata = cp;
+ Offset = (offset + HitOffset);
+ data = buffer;
+ offset = hoffset;
+ goto highlight_hit_within_hightext;
+ }
+ goto highlight_search_done;
+ }
+
+ highlight_hit_within_hightext:
+ /*
+ * If we get to here, the hit starts within the hightext. If we
+ * are making the link current and it's the last character in the
+ * hightext, we are done. Otherwise, move there and start
+ * restoring the emphasis. -FM
+ */
+ if ((Offset - offset) <= (flag == TRUE ? (hLen - 1) : hLen)) {
+ data = SKIP_GLYPHS(utf_flag, data, Offset - offset);
+ if (utf_flag) {
+ LYrefresh();
+ }
+ offset = Offset;
+ itmp = 0;
+ written = 0;
+ len = tlen;
+
+ /*
+ * Go to the start of the hit and handle its first character.
+ * -FM
+ */
+ LYmove(hLine, offset);
+ tmp[0] = data[itmp];
+ utf_extra = utf8_length(utf_flag, data + itmp);
+ if (utf_extra) {
+ LYStrNCpy(&tmp[1], &data[itmp + 1], utf_extra);
+ itmp += (int) utf_extra;
+ /*
+ * Start emphasis immediately if we are making the link
+ * non-current, or we are making it current but this is not
+ * the first or last character of the hightext. -FM
+ */
+ if (flag != TRUE ||
+ (offset > hoffset && data[itmp + 1] != '\0')) {
+ LYstartTargetEmphasis();
+ TargetEmphasisON = TRUE;
+ LYaddstr(tmp);
+ } else {
+ LYmove(hLine, (offset + 1));
+ }
+ tmp[1] = '\0';
+ written += (int) (utf_extra + 1);
+ } else if (IS_CJK_TTY && is8bits(tmp[0])) {
+ /*
+ * For CJK strings, by Masanobu Kimura.
+ */
+ tmp[1] = data[++itmp];
+ /*
+ * Start emphasis immediately if we are making the link
+ * non-current, or we are making it current but this is not
+ * the first or last character of the hightext. -FM
+ */
+ if (flag != TRUE ||
+ (offset > hoffset && data[itmp + 1] != '\0')) {
+ LYstartTargetEmphasis();
+ TargetEmphasisON = TRUE;
+ LYaddstr(tmp);
+ } else {
+ LYmove(hLine, (offset + 2));
+ }
+ tmp[1] = '\0';
+ written += 2;
+ } else {
+ /*
+ * Start emphasis immediately if we are making the link
+ * non-current, or we are making it current but this is not
+ * the first or last character of the hightext. -FM
+ */
+ if (flag != TRUE ||
+ (offset > hoffset && data[itmp + 1] != '\0')) {
+ LYstartTargetEmphasis();
+ TargetEmphasisON = TRUE;
+ LYaddstr(tmp);
+ } else {
+ LYmove(hLine, (offset + 1));
+ }
+ written++;
+ }
+ itmp++;
+ /*
+ * Start emphasis after the first character if we are making
+ * the link current and this is not the last character. -FM
+ */
+ if (!TargetEmphasisON &&
+ data[itmp] != '\0') {
+ LYstartTargetEmphasis();
+ TargetEmphasisON = TRUE;
+ }
+
+ for (;
+ written < len && (tmp[0] = data[itmp]) != '\0';
+ itmp++) {
+ /*
+ * Print all the other target chars, except the last
+ * character if it is also the last character of hightext
+ * and we are making the link current. -FM
+ */
+ utf_extra = utf8_length(utf_flag, data + itmp);
+ if (utf_extra) {
+ LYStrNCpy(&tmp[1], &data[itmp + 1], utf_extra);
+ itmp += (int) utf_extra;
+ /*
+ * Make sure we don't restore emphasis to the last
+ * character of hightext if we are making the link
+ * current. -FM
+ */
+ if (flag == TRUE && data[(itmp + 1)] == '\0') {
+ LYstopTargetEmphasis();
+ TargetEmphasisON = FALSE;
+ LYGetYX(y, offset);
+ LYmove(hLine, (offset + 1));
+ } else {
+ LYaddstr(tmp);
+ }
+ tmp[1] = '\0';
+ written += (int) (utf_extra + 1);
+ } else if (IS_CJK_TTY && is8bits(tmp[0])) {
+ /*
+ * For CJK strings, by Masanobu Kimura.
+ */
+ tmp[1] = data[++itmp];
+ /*
+ * Make sure we don't restore emphasis to the last
+ * character of hightext if we are making the link
+ * current. -FM
+ */
+ if (flag == TRUE && data[(itmp + 1)] == '\0') {
+ LYstopTargetEmphasis();
+ TargetEmphasisON = FALSE;
+ LYGetYX(y, offset);
+ LYmove(hLine, (offset + 1));
+ } else {
+ LYaddstr(tmp);
+ }
+ tmp[1] = '\0';
+ written += 2;
+ } else {
+ /*
+ * Make sure we don't restore emphasis to the last
+ * character of hightext if we are making the link
+ * current. -FM
+ */
+ if (flag == TRUE && data[(itmp + 1)] == '\0') {
+ LYstopTargetEmphasis();
+ TargetEmphasisON = FALSE;
+ LYGetYX(y, offset);
+ LYmove(hLine, (offset + 1));
+ } else {
+ LYaddstr(tmp);
+ }
+ written++;
+ }
+ }
+
+ /*
+ * Stop the emphasis if we haven't already, then reset the
+ * offset to our current position in the line, and if that is
+ * beyond the link, or we are making the link current and it is
+ * the last character in the hightext, we are done. -FM
+ */
+ if (TargetEmphasisON) {
+ LYstopTargetEmphasis();
+ TargetEmphasisON = FALSE;
+ }
+ LYGetYX(y, offset);
+ if (offset < (hoffset + (flag == TRUE ? (hLen - 1) : hLen))
+ /*
+ * See if we have another hit that starts within the
+ * hightext. -FM
+ */
+ && ((cp =
+ LYno_attr_mb_strstr(data = SKIP_GLYPHS(utf_flag,
+ mydata,
+ offset - Offset),
+ target,
+ utf_flag, YES,
+ &HitOffset,
+ &LenNeeded)) != NULL)
+ && (offset + LenNeeded) < LYcols
+ /*
+ * If the hit starts after the end of the hightext, or we
+ * are making the link current and the hit starts at its
+ * last character, we are done. -FM
+ */
+ && (HitOffset + offset) <
+ (hoffset + (flag == TRUE ? (hLen - 1) : hLen))) {
+ /*
+ * If the target extends beyond our buffer, emphasize
+ * everything in the hightext starting at this hit.
+ * Otherwise, set up the data and offsets, and loop back.
+ * -FM
+ */
+ if ((HitOffset + (offset + tLen)) >= (hoffset + hLen)) {
+ offset = (HitOffset + offset);
+ data = SKIP_GLYPHS(utf_flag, mydata, offset - hoffset);
+ if (utf_flag) {
+ LYrefresh();
+ }
+ LYmove(hLine, offset);
+ itmp = 0;
+ written = 0;
+ len = (int) strlen(data);
+
+ /*
+ * Turn the emphasis back on. -FM
+ */
+ LYstartTargetEmphasis();
+ TargetEmphasisON = TRUE;
+ for (;
+ written < len && (tmp[0] = data[itmp]) != '\0';
+ itmp++) {
+ /*
+ * Print all the other target chars, except the
+ * last character if it is also the last character
+ * of hightext and we are making the link current.
+ * -FM
+ */
+ utf_extra = utf8_length(utf_flag, data + itmp);
+ if (utf_extra) {
+ LYStrNCpy(&tmp[1], &data[itmp + 1], utf_extra);
+ itmp += (int) utf_extra;
+ /*
+ * Make sure we don't restore emphasis to the
+ * last character of hightext if we are making
+ * the link current. -FM
+ */
+ if (flag == TRUE && data[(itmp + 1)] == '\0') {
+ LYstopTargetEmphasis();
+ TargetEmphasisON = FALSE;
+ LYGetYX(y, offset);
+ LYmove(hLine, (offset + 1));
+ } else {
+ LYaddstr(tmp);
+ }
+ tmp[1] = '\0';
+ written += (int) (utf_extra + 1);
+ } else if (IS_CJK_TTY && is8bits(tmp[0])) {
+ /*
+ * For CJK strings, by Masanobu Kimura.
+ */
+ tmp[1] = data[++itmp];
+ /*
+ * Make sure we don't restore emphasis to the
+ * last character of hightext if we are making
+ * the link current. -FM
+ */
+ if (flag == TRUE && data[(itmp + 1)] == '\0') {
+ LYstopTargetEmphasis();
+ TargetEmphasisON = FALSE;
+ } else {
+ LYaddstr(tmp);
+ }
+ tmp[1] = '\0';
+ written += 2;
+ } else {
+ /*
+ * Make sure we don't restore emphasis to the
+ * last character of hightext if we are making
+ * the link current. -FM
+ */
+ if (flag == TRUE && data[(itmp + 1)] == '\0') {
+ LYstopTargetEmphasis();
+ TargetEmphasisON = FALSE;
+ } else {
+ LYaddstr(tmp);
+ }
+ written++;
+ }
+ }
+ /*
+ * Turn off the emphasis if we haven't already, and
+ * then we're done. -FM
+ */
+ if (TargetEmphasisON) {
+ LYstopTargetEmphasis();
+ }
+ } else {
+ mydata = cp;
+ Offset = (offset + HitOffset);
+ data = buffer;
+ offset = hoffset;
+ goto highlight_hit_within_hightext;
+ }
+ }
+ }
+ }
+ }
+ highlight_search_done:
+ FREE(theData);
+ return (BOOLEAN) TargetEmphasisON;
+}
+#endif /* SHOW_WHEREIS_TARGETS */
+
+#ifdef USE_COLOR_STYLE
+static int find_cached_style(int cur,
+ int flag)
+{
+ int s = s_alink;
+
+#ifdef TEXTFIELDS_MAY_NEED_ACTIVATION
+ if (textfields_need_activation
+ && links[cur].type == WWW_FORM_LINK_TYPE
+ && F_TEXTLIKE(links[cur].l_form->type))
+ s = s_curedit;
+#endif
+
+ if (flag != TRUE) {
+ int x;
+
+ /*
+ * This is where we try to restore the original style when a link is
+ * unhighlighted. The cached styles array saves the original style
+ * just for this case. If it doesn't have a color change saved at just
+ * the right position, we look at preceding positions in the same line
+ * until we find one.
+ */
+ if (ValidCachedStyle(LYP, LXP)) {
+ CTRACE2(TRACE_STYLE,
+ (tfp, "STYLE.highlight.off: cached style @(%d,%d): ",
+ LYP, LXP));
+ s = (int) GetCachedStyle(LYP, LXP);
+ if (s == 0) {
+ for (x = LXP - 1; x >= 0; x--) {
+ s = (int) GetCachedStyle(LYP, x);
+ if (s != 0) {
+ SetCachedStyle(LYP, LXP, (unsigned) s);
+ CTRACE2(TRACE_STYLE,
+ (tfp, "found %d, x_offset=%d.\n", s, x - LXP));
+ break;
+ }
+ }
+ if (s == 0) {
+ CTRACE2(TRACE_STYLE, (tfp, "not found, assume <a>.\n"));
+ s = s_a;
+ }
+ } else {
+ CTRACE2(TRACE_STYLE, (tfp, "found %d.\n", s));
+ }
+ } else {
+ CTRACE2(TRACE_STYLE,
+ (tfp, "STYLE.highlight.off: can't use cache.\n"));
+ s = s_a;
+ }
+ } else {
+ CTRACE2(TRACE_STYLE, (tfp, "STYLE.highlight.on: @(%d,%d).\n", LYP, LXP));
+ }
+ return s;
+}
+#endif /* USE_COLOR_STYLE */
+
+/*
+ * Highlight (or unhighlight) a given link.
+ */
+void LYhighlight(int flag,
+ int cur,
+ const char *target)
+{
+ char buffer[MAX_LINE];
+ int i;
+ int hi_count;
+ int hi_offset;
+ int title_adjust = (no_title ? -TITLE_LINES : 0);
+ char tmp[7];
+ const char *hi_string;
+
+#ifdef SHOW_WHEREIS_TARGETS
+ BOOL TargetEmphasisON = FALSE;
+ BOOL target1_drawn = NO;
+#endif
+ BOOL utf_flag = (BOOL) IS_UTF8_TTY;
+ BOOL hl1_drawn = NO;
+
+ tmp[0] = tmp[1] = tmp[2] = '\0';
+
+ /*
+ * Bugs in the history code might cause -1 to be sent for cur, which yields
+ * a crash when LYStrNCpy() is called with a nonsense pointer. As far as I
+ * know, such bugs have been squashed, but if they should reappear, this
+ * works around them. -FM
+ */
+ if (cur < 0) {
+ CTRACE((tfp, "LYhighlight cur %d (bug workaround)\n", cur));
+ cur = 0;
+ }
+
+ CTRACE((tfp, "LYhighlight at(%2d,%2d) %s %d [%d]:%s\n",
+ links[cur].ly, links[cur].lx,
+ (flag
+ ? "on"
+ : "off"),
+ cur,
+ links[cur].anchor_number,
+ NONNULL(target)));
+
+#if defined(TEXTFIELDS_MAY_NEED_ACTIVATION) && defined(INACTIVE_INPUT_STYLE_VH)
+ if (flag == FALSE)
+ textinput_redrawn = FALSE;
+#endif
+
+ if (nlinks > 0) {
+#ifdef USE_COLOR_STYLE
+ if (flag == TRUE || links[cur].type == WWW_FORM_LINK_TYPE) {
+ LYmove(LYP + title_adjust, LXP);
+ LynxChangeStyle(find_cached_style(cur, flag), STACK_ON);
+ }
+#else
+ if (links[cur].type == WWW_FORM_LINK_TYPE
+ || LYGetHiliteStr(cur, 0) == NULL) {
+ LYMoveToLink(cur, target, NULL,
+ flag, links[cur].inUnderline, utf_flag);
+ lynx_start_link_color(flag == TRUE, links[cur].inUnderline);
+ } else {
+ LYMoveToLink(cur, target, LYGetHiliteStr(cur, 0),
+ flag, links[cur].inUnderline, utf_flag);
+ hl1_drawn = YES;
+#ifdef SHOW_WHEREIS_TARGETS
+ target1_drawn = YES;
+#endif
+ }
+#endif
+
+ if (links[cur].type == WWW_FORM_LINK_TYPE) {
+ int len;
+ int avail_space = (LYcolLimit - LXP) + (LYcolLimit * (LYlines - LYP));
+ const char *text = LYGetHiliteStr(cur, 0);
+
+ if (text == 0)
+ text = "";
+
+ if (avail_space > links[cur].l_form->size)
+ avail_space = links[cur].l_form->size;
+
+ len = (int) (LYmbcs_skip_cells(text, avail_space, utf_flag) - text);
+ LYwaddnstr(LYwin, text, (size_t) len);
+ while (len++ < avail_space)
+ LYaddch('_');
+
+#ifdef USE_COLOR_STYLE
+ } else if (flag == FALSE) {
+ redraw_lines_of_link(cur);
+ CTRACE2(TRACE_STYLE,
+ (tfp, "STYLE.highlight.off: NOFIX branch @(%d,%d).\n",
+ LYP, LXP));
+#endif
+ } else if (!hl1_drawn) {
+ /*
+ * Copy into the buffer only what will fit within the width of the
+ * screen.
+ */
+ LYmbcsstrncpy(buffer,
+ NonNull(LYGetHiliteStr(cur, 0)),
+ (int) (sizeof(buffer) - 1),
+ (LYcolLimit - LXP),
+ utf_flag);
+ LYaddstr(buffer);
+ }
+
+ /*
+ * Display a second line as well.
+ */
+ for (hi_count = 1;
+ (hi_string = LYGetHiliteStr(cur, hi_count)) != NULL
+ && LYP + hi_count <= display_lines;
+ ++hi_count) {
+ int row = LYP + hi_count + title_adjust;
+
+ hi_offset = LYGetHilitePos(cur, hi_count);
+ if (hi_offset < 0)
+ continue;
+ lynx_stop_link_color(flag == TRUE, links[cur].inUnderline);
+ LYmove(row, hi_offset);
+
+#ifdef USE_COLOR_STYLE
+ CTRACE2(TRACE_STYLE,
+ (tfp, "STYLE.highlight.line2: @(%d,%d), style=%d.\n",
+ row, hi_offset,
+ flag == TRUE ? s_alink : s_a));
+ LynxChangeStyle(flag == TRUE ? s_alink : s_a, ABS_ON);
+#else
+ lynx_start_link_color(flag == TRUE, links[cur].inUnderline);
+#endif
+
+ for (i = 0; (tmp[0] = hi_string[i]) != '\0'
+ && (i + hi_offset) < LYcols; i++) {
+ if (!IsSpecialAttrChar(hi_string[i])) {
+ /*
+ * For CJK strings, by Masanobu Kimura.
+ */
+ if (IS_CJK_TTY && is8bits(tmp[0])) {
+ tmp[1] = hi_string[++i];
+ LYaddstr(tmp);
+ tmp[1] = '\0';
+ } else {
+ LYaddstr(tmp);
+ }
+ }
+ }
+ }
+ lynx_stop_link_color(flag == TRUE, links[cur].inUnderline);
+#ifdef SHOW_WHEREIS_TARGETS
+ for (hi_count = target1_drawn ? 1 : 0;
+ LYGetHiliteStr(cur, hi_count) != NULL;
+ hi_count++) {
+ TargetEmphasisON = show_whereis_targets(flag,
+ cur,
+ hi_count,
+ target,
+ TargetEmphasisON,
+ utf_flag);
+ }
+
+ if (!LYShowCursor)
+ /*
+ * Get cursor out of the way.
+ */
+ LYHideCursor();
+ else
+#endif /* SHOW_WHEREIS_TARGETS */
+ /*
+ * Never hide the cursor if there's no FANCY CURSES or SLANG.
+ */
+ LYmove(LYP + title_adjust, ((LXP > 0) ? (LXP - 1) : 0));
+
+ if (flag)
+ LYrefresh();
+ }
+ return;
+}
+
+/*
+ * free_and_clear will free a pointer if it is non-zero and then set it to
+ * zero.
+ */
+void free_and_clear(char **pointer)
+{
+ if (*pointer) {
+ FREE(*pointer);
+ *pointer = 0;
+ }
+ return;
+}
+
+/*
+ * Convert single or serial newlines to single spaces throughout a string
+ * (ignore newlines if the preceding character is a space) and convert tabs to
+ * single spaces. Don't ignore any explicit tabs or spaces if the condense
+ * argument is FALSE, otherwise, condense any serial spaces or tabs to one
+ * space. - FM
+ */
+void convert_to_spaces(char *string,
+ int condense)
+{
+ char *s = string;
+ char *ns;
+ BOOL last_is_space = FALSE;
+
+ if (!s)
+ return;
+
+ s = LYSkipNonBlanks(s);
+ ns = s;
+
+ while (*s) {
+ switch (*s) {
+ case ' ':
+ case '\t':
+ if (!(condense && last_is_space))
+ *(ns++) = ' ';
+ last_is_space = TRUE;
+ break;
+
+ case '\r':
+ case '\n':
+ if (!last_is_space) {
+ *(ns++) = ' ';
+ last_is_space = TRUE;
+ }
+ break;
+
+ default:
+ *(ns++) = *s;
+ last_is_space = FALSE;
+ break;
+ }
+ s++;
+ }
+ *ns = '\0';
+ return;
+}
+
+/*
+ * Strip trailing slashes from directory paths.
+ */
+char *strip_trailing_slash(char *dirname)
+{
+ int i;
+
+ i = (int) strlen(dirname) - 1;
+ while (i >= 0 && dirname[i] == '/')
+ dirname[i--] = '\0';
+ return (dirname);
+}
+
+/*
+ * Remove most blanks, but restore one trailing blank to make prompts nicer.
+ */
+static void remove_most_blanks(char *buffer)
+{
+ int length = (int) strlen(buffer);
+ BOOL trailing = (BOOL) ((length != 0) && (buffer[length - 1] == ' '));
+
+ LYReduceBlanks(buffer);
+ if (trailing)
+ strcat(buffer, " ");
+}
+
+/*
+ * Display (or hide) the status line.
+ */
+BOOLEAN mustshow = FALSE;
+
+void statusline(const char *text)
+{
+ char buffer[MAX_LINE];
+ unsigned char *temp = NULL;
+ int max_length, len, i, j;
+ int at_lineno;
+ unsigned char k;
+ char *p;
+ char text_buff[MAX_LINE];
+
+ if (text == NULL)
+ return;
+
+ /*
+ * Don't print statusline messages if dumping to stdout.
+ */
+ if (dump_output_immediately)
+ return;
+
+ /*
+ * Don't print statusline message if turned off.
+ */
+ if (mustshow != TRUE) {
+ if (no_statusline == TRUE) {
+ return;
+ }
+ }
+ mustshow = FALSE;
+
+ /* "LYNXDOWNLOAD://Method=-1/File=%s/SugFile=%s%s\">Save to disk</a>\n" */
+ LYStrNCpy(text_buff, text, sizeof(text_buff) - 1);
+ p = StrChr(text_buff, '\n');
+ if (p)
+ *p = '\0';
+
+ /*
+ * Deal with any CJK escape sequences and Kanji if we have a CJK character
+ * set selected, otherwise, strip any escapes. Also, make sure text is not
+ * longer than the statusline window. - FM
+ */
+ max_length = (((LYcolLimit - 1) < (int) sizeof(buffer))
+ ? (LYcolLimit - 1)
+ : (int) sizeof(buffer) - 1);
+ if ((text_buff[0] != '\0') &&
+ (LYHaveCJKCharacterSet)) {
+ /*
+ * Translate or filter any escape sequences. - FM
+ */
+ if ((temp = typecallocn(unsigned char, strlen(text_buff) + 1)) == NULL)
+ outofmem(__FILE__, "statusline");
+
+ if (kanji_code == EUC) {
+ TO_EUC((const unsigned char *) text_buff, temp);
+ } else if (kanji_code == SJIS) {
+#ifdef KANJI_CODE_OVERRIDE
+ if (!LYRawMode || last_kcode == SJIS)
+ strcpy(temp, text_buff);
+ else
+ TO_SJIS((const unsigned char *) text_buff, temp);
+#else
+ strcpy((char *) temp, text_buff);
+#endif
+ } else {
+ for (i = 0, j = 0; text_buff[i]; i++) {
+ if (text_buff[i] != CH_ESC) { /* S/390 -- gil -- 2119 */
+ temp[j++] = UCH(text_buff[i]);
+ }
+ }
+ temp[j] = '\0';
+ }
+
+ /*
+ * Deal with any newlines or tabs in the string. - FM
+ */
+ remove_most_blanks((char *) temp);
+
+ /*
+ * Handle the Kanji, making sure the text is not longer than the
+ * statusline window. - FM
+ */
+ for (i = 0, j = 0, len = 0, k = '\0';
+ temp[i] != '\0' && len < max_length; i++) {
+ if (k != '\0') {
+ buffer[j++] = (char) k;
+ buffer[j++] = (char) temp[i];
+ k = '\0';
+ len += 2;
+ } else if ((temp[i] & 0200) != 0) {
+ k = temp[i];
+ } else {
+ buffer[j++] = (char) temp[i];
+ len++;
+ }
+ }
+ buffer[j] = '\0';
+ FREE(temp);
+ } else {
+ /*
+ * Deal with any newlines or tabs in the string. - FM
+ */
+ remove_most_blanks(text_buff);
+#ifdef WIDEC_CURSES
+ len = (int) strlen(text_buff);
+ if (len >= (int) (sizeof(buffer) - 1))
+ len = (int) (sizeof(buffer) - 1);
+ LYStrNCpy(buffer, text_buff, len);
+ /* FIXME: a binary search might be faster */
+ while (len > 0 && LYstrExtent(buffer, len, len) > max_length)
+ buffer[--len] = '\0';
+#else
+ /*
+ * Strip any escapes, and shorten text if necessary. Note that we
+ * don't deal with the possibility of UTF-8 characters in the string.
+ * This is unlikely, but if strings with such characters are used in
+ * LYMessages_en.h, a compilation symbol of HAVE_UTF8_STATUSLINES could
+ * be added there, and code added here for determining the displayed
+ * string length, as we do above for CJK. - FM
+ */
+ for (i = 0, len = 0; text_buff[i] != '\0' && len < max_length; i++) {
+ if (text_buff[i] != CH_ESC) { /* S/390 -- gil -- 2119 */
+ buffer[len++] = text_buff[i];
+ }
+ }
+ buffer[len] = '\0';
+#endif
+ }
+
+ /*
+ * Move to the desired statusline window and output the text highlighted.
+ * - FM
+ */
+ if (LYStatusLine >= 0) {
+ if (LYStatusLine < LYlines - 1) {
+ at_lineno = LYStatusLine;
+ } else {
+ at_lineno = LYlines - 1;
+ }
+ } else if (user_mode == NOVICE_MODE) {
+ at_lineno = LYlines - 3;
+ } else {
+ at_lineno = LYlines - 1;
+ }
+ LYmove(at_lineno, 0);
+ LYclrtoeol();
+
+ if (buffer[0] != '\0') {
+ BOOLEAN has_CJK = FALSE;
+
+ if (IS_CJK_TTY) {
+ for (i = 0; buffer[i] != '\0'; i++) {
+ if (buffer[i] & 0x80) {
+ has_CJK = TRUE;
+ break;
+ }
+ }
+ }
+
+ if (has_CJK
+#ifdef HAVE_UTF8_STATUSLINES
+ || IS_UTF8_TTY
+#endif
+ ) {
+ LYrefresh();
+ }
+#ifndef USE_COLOR_STYLE
+ lynx_start_status_color();
+ LYaddstr(buffer);
+ lynx_stop_status_color();
+#else
+ /* draw the status bar in the STATUS style */
+ {
+ int y, x;
+ int a = ((StrNCmp(buffer, ALERT_FORMAT, ALERT_PREFIX_LEN)
+ || !hashStyles[s_alert].used)
+ ? s_status
+ : s_alert);
+
+ LynxChangeStyle(a, STACK_ON);
+ LYaddstr(buffer);
+ wbkgdset(LYwin,
+ ((lynx_has_color && LYShowColor >= SHOW_COLOR_ON)
+ ? (chtype) hashStyles[a].color
+ : A_NORMAL) | ' ');
+ LYGetYX(y, x);
+ (void) x;
+ if (y == at_lineno) {
+ LYclrtoeol();
+ }
+ if (!(lynx_has_color && LYShowColor >= SHOW_COLOR_ON))
+ wbkgdset(LYwin, A_NORMAL | ' ');
+ else if (s_normal != NOSTYLE)
+ wbkgdset(LYwin, (chtype) (hashStyles[s_normal].color | ' '));
+ else
+ wbkgdset(LYwin, (chtype) (displayStyles[DSTYLE_NORMAL].color | ' '));
+ LynxChangeStyle(a, STACK_OFF);
+ }
+#endif
+ }
+ LYrefresh();
+
+ return;
+}
+
+static const char *novice_lines(int lineno)
+{
+ switch (lineno) {
+ case 0:
+ return NOVICE_LINE_TWO_A;
+ case 1:
+ return NOVICE_LINE_TWO_B;
+ case 2:
+ return NOVICE_LINE_TWO_C;
+ default:
+ return "";
+ }
+}
+
+static int lineno = 0;
+
+void toggle_novice_line(void)
+{
+ lineno++;
+ if (*novice_lines(lineno) == '\0')
+ lineno = 0;
+ return;
+}
+
+void noviceline(int more_flag GCC_UNUSED)
+{
+ if (dump_output_immediately)
+ return;
+
+ LYmove(LYlines - 2, 0);
+ LYclrtoeol();
+ LYaddstr(NOVICE_LINE_ONE);
+
+ LYParkCursor();
+#if defined(DIRED_SUPPORT ) && defined(OK_OVERRIDE)
+ if (lynx_edit_mode && !no_dired_support)
+ LYaddstr(DIRED_NOVICELINE);
+ else
+#endif /* DIRED_SUPPORT && OK_OVERRIDE */
+
+ if (LYUseNoviceLineTwo)
+ LYaddstr(NOVICE_LINE_TWO);
+ else
+ LYaddstr(novice_lines(lineno));
+
+ LYrefresh();
+ return;
+}
+
+/*
+ * If the standard input is not a tty, and Lynx is really reading from the
+ * standard input, attempt to reopen it, pointing to a real tty. Normally
+ * this would happen if the user pipes data to Lynx and wants to run
+ * interactively after that.
+ *
+ * Returns:
+ * 1 if successfully reopened
+ * -1 if we cannot reopen
+ * 0 if we do not have to reopen
+ */
+int LYReopenInput(void)
+{
+ int result = 0;
+ int fd;
+
+ if ((fd = fileno(stdin)) == 0
+ && !isatty(fd)
+ && LYConsoleInputFD(FALSE) == fd) {
+ const char *term_name = NULL;
+ int new_fd = -1;
+
+#ifdef HAVE_TTYNAME
+ if (isatty(fileno(stdout)) &&
+ (term_name = ttyname(fileno(stdout))) != NULL)
+ new_fd = open(term_name, O_RDONLY);
+
+ if (new_fd == -1 &&
+ isatty(fileno(stderr)) &&
+ (term_name = ttyname(fileno(stderr))) != NULL)
+ new_fd = open(term_name, O_RDONLY);
+#endif
+
+#ifdef HAVE_CTERMID
+ if (new_fd == -1 &&
+ (term_name = ctermid(NULL)) != NULL)
+ new_fd = open(term_name, O_RDONLY);
+#endif
+
+#ifdef TTY_DEVICE
+ if (new_fd == -1)
+ new_fd = open(term_name = TTY_DEVICE, O_RDONLY);
+#endif
+
+ CTRACE((tfp, "LYReopenInput open(%s) returned %d.\n", term_name, new_fd));
+ if (new_fd >= 0) {
+ FILE *frp;
+
+ close(new_fd);
+ frp = freopen(term_name, "r", stdin);
+ CTRACE((tfp,
+ "LYReopenInput freopen(%s,\"r\",stdin) returned %p, stdin is now %p with fd %d.\n",
+ term_name, (void *) frp, (void *) stdin, fileno(stdin)));
+ result = 1;
+ } else {
+ result = -1;
+ }
+ }
+ return result;
+}
+
+/*
+ * Returns the file descriptor from which keyboard input is expected, or INVSOC
+ * (-1) if not available. If need_selectable is true, returns non-INVSOC fd
+ * only if select() is possible - actually, currently only checks if fd is
+ * connected to a tty. - kw
+ */
+int LYConsoleInputFD(int need_selectable)
+{
+ int fd = INVSOC;
+
+#ifdef USE_SLANG
+ if (!LYCursesON)
+ fd = fileno(stdin);
+#if ((SLANG_VERSION >= 9919) && defined(REAL_UNIX_SYSTEM) && !defined(__CYGWIN__))
+ /* SLang_TT_Read_FD introduced in slang 0.99.19, from its changelog:
+ * SLang_TT_Read_FD variable is now available for unix. This is the file
+ * descriptor used by SLang_getkey. */
+ else
+ fd = SLang_TT_Read_FD;
+#endif /* SLANG_VERSION >= 9919 */
+#else /* !USE_SLANG */
+ fd = fileno(stdin);
+#endif /* !USE_SLANG */
+
+ if (need_selectable && fd != INVSOC) {
+ if (isatty(fd)) {
+ return fd;
+ } else {
+ return INVSOC;
+ }
+ }
+ return fd;
+}
+
+static int fake_zap = 0;
+
+void LYFakeZap(int set)
+{
+ if (set && fake_zap < 1) {
+ CTRACE((tfp, "\r *** Set simulated 'Z'"));
+ if (fake_zap)
+ CTRACE((tfp, ", %d pending", fake_zap));
+ CTRACE((tfp, " ***\n"));
+ fake_zap++;
+ } else if (!set && fake_zap) {
+ CTRACE((tfp, "\r *** Unset simulated 'Z'"));
+ CTRACE((tfp, ", %d pending", fake_zap));
+ CTRACE((tfp, " ***\n"));
+ fake_zap = 0;
+ }
+
+}
+
+static int DontCheck(void)
+{
+ static time_t last;
+ time_t next;
+
+ /** Curses or slang setup was not invoked **/
+ if (dump_output_immediately)
+ return (TRUE);
+
+ if (LYHaveCmdScript()) /* we may be running from a script */
+ return (TRUE);
+
+ if (LYNoZapKey)
+ return (TRUE);
+ /*
+ * Avoid checking interrupts more than one per second, since it is a slow
+ * and expensive operation - TD
+ */
+#ifdef HAVE_GETTIMEOFDAY
+#undef timezone /* U/Win defines a conflicting macro */
+ {
+ struct timeval tv;
+
+ gettimeofday(&tv, (struct timezone *) 0);
+ next = (tv.tv_sec * 10);
+ next += (tv.tv_usec / 100000L); /* 0.1 seconds is a compromise */
+ }
+#else
+ next = time((time_t *) 0);
+#endif
+ if (next == last)
+ return (TRUE);
+
+ last = next;
+ return FALSE;
+}
+
+int HTCheckForInterrupt(void)
+{
+ int c;
+ int cmd;
+
+ if (fake_zap > 0) {
+ fake_zap--;
+ CTRACE((tfp, "\r *** Got simulated 'Z' ***\n"));
+ CTRACE_FLUSH(tfp);
+ CTRACE_SLEEP(AlertSecs);
+ return ((int) TRUE);
+ }
+
+ /** Curses or slang setup was not invoked **/
+ if (DontCheck())
+ return ((int) FALSE);
+
+#ifndef VMS /* UNIX stuff: */
+
+#if !defined(_WINDOWS) || defined(__MINGW32__)
+
+ /*
+ * First, check if there is a character.
+ */
+#ifdef USE_SLANG
+ /** No keystroke was entered
+ Note that this isn't taking possible SOCKSification
+ and the socks_flag into account, and may fail on the
+ slang library's select() when SOCKSified. - FM **/
+#ifdef DJGPP_KEYHANDLER
+ if (0 == _bios_keybrd(_NKEYBRD_READY))
+ return (FALSE);
+#else
+ if (0 == SLang_input_pending(0))
+ return (FALSE);
+#endif /* DJGPP_KEYHANDLER */
+
+#else /* Unix curses: */
+ {
+ struct timeval socket_timeout;
+ int ret = 0;
+ fd_set readfds;
+
+ socket_timeout.tv_sec = 0;
+ socket_timeout.tv_usec = 0;
+ FD_ZERO(&readfds);
+ FD_SET(0, &readfds);
+#ifdef SOCKS
+ if (socks_flag)
+ ret = Rselect(1, &readfds, NULL, NULL, &socket_timeout);
+ else
+#endif /* SOCKS */
+ ret = select(1, &readfds, NULL, NULL, &socket_timeout);
+
+ /** Suspended? **/
+ if ((ret == -1) && (SOCKET_ERRNO == EINTR))
+ return ((int) FALSE);
+
+ /** No keystroke was entered? **/
+ if (!FD_ISSET(0, &readfds))
+ return ((int) FALSE);
+ }
+#endif /* USE_SLANG */
+
+#endif /* !_WINDOWS */
+
+ /*
+ * Now, read the character.
+ */
+#if defined(USE_CURSES_NODELAY)
+ nodelay(LYwin, TRUE);
+ c = LYgetch();
+ nodelay(LYwin, FALSE);
+#elif defined(USE_SLANG) && defined(_WINDOWS)
+ if (!SLang_input_pending(0))
+ return ((int) FALSE);
+ c = LYgetch();
+#else
+ c = LYgetch();
+#endif
+
+#else /* VMS: */
+ extern int typeahead(void);
+
+ /** Control-C or Control-Y and a 'N'o reply to exit query **/
+ if (HadVMSInterrupt) {
+ HadVMSInterrupt = FALSE;
+ return ((int) TRUE);
+ }
+
+ c = typeahead();
+
+#endif /* !VMS */
+
+ /*
+ * 'c' contains whatever character we're able to read from keyboard
+ */
+
+ /** Keyboard 'Z' or 'z', or Control-G or Control-C **/
+ if (LYCharIsINTERRUPT(c))
+ return ((int) TRUE);
+
+ /* There is a subset of mainloop() actions available at this stage: no new
+ * getfile() cycle is possible until the previous finished. Currently we
+ * have scrolling in partial mode, toggling of trace log, and pasting.
+ * User search now in progress...
+ */
+ cmd = (LKC_TO_LAC(keymap, c));
+ switch (cmd) {
+ case LYK_TRACE_TOGGLE: /* Toggle TRACE mode. */
+ handle_LYK_TRACE_TOGGLE();
+ break;
+#ifdef CAN_CUT_AND_PASTE
+ case LYK_TO_CLIPBOARD:{ /* ^S */
+ const char *s = LYDownLoadAddress();
+
+ if (!s || !*s || put_clip(s))
+ HTInfoMsg(gettext("Copy to clipboard failed."));
+ else
+ HTInfoMsg(gettext("Download document URL put to clipboard."));
+ break;
+ }
+#endif /* defined CAN_CUT_AND_PASTE */
+ default:
+#ifdef DISP_PARTIAL
+ /* OK, we got several lines from new document and want to scroll... */
+ if (display_partial && (NumOfLines_partial > 2)) {
+ BOOLEAN do_refresh;
+ int res;
+ int Newline_partial = LYGetNewline();
+
+ switch (cmd) {
+ case LYK_WHEREIS: /* search within the document */
+ case LYK_NEXT: /* search for the next occurrence in the document */
+ case LYK_PREV: /* search for the previous occurrence in the document */
+ handle_LYK_WHEREIS(cmd, &do_refresh);
+ if (www_search_result != -1) {
+ Newline_partial = www_search_result;
+ www_search_result = -1; /* reset */
+ }
+ break;
+
+ case LYK_FASTBACKW_LINK:
+ if (Newline_partial <= (display_lines) + 1) {
+ Newline_partial -= display_lines;
+ } else if ((res =
+ HTGetLinkOrFieldStart(-1,
+ &Newline_partial, NULL,
+ -1, TRUE)) == LINK_LINE_FOUND) {
+ Newline_partial++;
+ } else if (res == LINK_DO_ARROWUP) {
+ Newline_partial -= display_lines;
+ }
+ break;
+ case LYK_FASTFORW_LINK:
+ if (HText_canScrollDown()) {
+ /* This is not an exact science... - kw */
+ if (HTGetLinkOrFieldStart(HText_LinksInLines(HTMainText,
+ Newline_partial,
+ display_lines)
+ - 1,
+ &Newline_partial, NULL,
+ 1, TRUE) == LINK_LINE_FOUND) {
+ Newline_partial++;
+ }
+ }
+ break;
+ case LYK_PREV_PAGE:
+ if (Newline_partial > 1)
+ Newline_partial -= display_lines;
+ break;
+ case LYK_NEXT_PAGE:
+ if (HText_canScrollDown())
+ Newline_partial += display_lines;
+ break;
+ case LYK_UP_HALF:
+ if (Newline_partial > 1)
+ Newline_partial -= (display_lines / 2);
+ break;
+ case LYK_DOWN_HALF:
+ if (HText_canScrollDown())
+ Newline_partial += (display_lines / 2);
+ break;
+ case LYK_UP_TWO:
+ if (Newline_partial > 1)
+ Newline_partial -= 2;
+ break;
+ case LYK_DOWN_TWO:
+ if (HText_canScrollDown())
+ Newline_partial += 2;
+ break;
+ case LYK_HOME:
+ if (Newline_partial > 1)
+ Newline_partial = 1;
+ break;
+ case LYK_END:
+ if (HText_canScrollDown())
+ Newline_partial = HText_getNumOfLines() - display_lines + 1;
+ /* calculate for "current" bottom value */
+ break;
+ case LYK_REFRESH:
+ break;
+ default:
+ /** Other or no keystrokes **/
+ return ((int) FALSE);
+ } /* end switch */
+ if (Newline_partial < 1)
+ Newline_partial = 1;
+ if (LYMainLoop_pageDisplay(Newline_partial))
+ NumOfLines_partial = HText_getNumOfLines();
+ }
+#endif /* DISP_PARTIAL */
+ break;
+ } /* end switch */
+ /** Other or no keystrokes **/
+ return ((int) FALSE);
+}
+
+/*
+ * Check if the given filename looks like it's an absolute pathname, i.e.,
+ * references a directory.
+ */
+BOOLEAN LYisAbsPath(const char *path)
+{
+ BOOLEAN result = FALSE;
+
+ if (non_empty(path)) {
+#ifdef VMS
+ result = TRUE;
+#else
+#if defined(USE_DOS_DRIVES)
+ result = (BOOLEAN) (LYIsPathSep(path[0])
+ || (LYIsDosDrive(path)
+ && LYIsPathSep(path[2])));
+#else
+ result = (BOOLEAN) (LYIsPathSep(path[0]));
+#endif /* USE_DOS_DRIVES */
+#endif
+ }
+ return result;
+}
+
+/*
+ * Check if the given filename is the root path, e.g., "/" on Unix.
+ */
+BOOLEAN LYisRootPath(const char *path)
+{
+#if defined(USE_DOS_DRIVES)
+ if (strlen(path) == 3
+ && LYIsDosDrive(path)
+ && LYIsPathSep(path[2]))
+ return TRUE;
+#endif
+ return (BOOL) ((strlen(path) == 1) && LYIsPathSep(path[0]));
+}
+
+/*
+ * A file URL for a remote host is an obsolete ftp URL.
+ * Return YES only if we're certain it's a local file. - FM
+ */
+BOOLEAN LYisLocalFile(const char *filename)
+{
+ char *host = NULL;
+ char *acc_method = NULL;
+ char *cp;
+
+ if (!filename)
+ return NO;
+ if (!(host = HTParse(filename, "", PARSE_HOST)))
+ return NO;
+ if (!*host) {
+ FREE(host);
+ return NO;
+ }
+
+ if ((cp = StrChr(host, ':')) != NULL)
+ *cp = '\0';
+
+ if ((acc_method = HTParse(filename, "", PARSE_ACCESS))) {
+ if (0 == strcmp("file", acc_method) &&
+ (0 == strcmp(host, "localhost") ||
+ LYSameFilename(host, HTHostName()))) {
+ FREE(host);
+ FREE(acc_method);
+ return YES;
+ }
+ }
+
+ FREE(host);
+ FREE(acc_method);
+ return NO;
+}
+
+/*
+ * Utility for checking URLs with a host field. Return YES only if we're
+ * certain it's the local host. - FM
+ */
+BOOLEAN LYisLocalHost(const char *filename)
+{
+ char *host = NULL;
+ char *cp;
+
+ if (!filename)
+ return NO;
+ if (!(host = HTParse(filename, "", PARSE_HOST)))
+ return NO;
+ if (!*host) {
+ FREE(host);
+ return NO;
+ }
+
+ if ((cp = StrChr(host, ':')) != NULL)
+ *cp = '\0';
+
+ if ((LYSameFilename(host, "localhost") ||
+ LYSameFilename(host, LYHostName) ||
+ LYSameFilename(host, HTHostName()))) {
+ FREE(host);
+ return YES;
+ }
+
+ FREE(host);
+ return NO;
+}
+
+/*
+ * Free an HTList that contains strings.
+ */
+void LYFreeStringList(HTList *list)
+{
+ if (list != NULL) {
+ char *argument;
+ HTList *cur = list;
+
+ while (NULL != (argument = (char *) HTList_nextObject(cur))) {
+ FREE(argument);
+ }
+ HTList_delete(list);
+ }
+}
+
+/*
+ * Utility for freeing the list of local host aliases. - FM
+ */
+void LYLocalhostAliases_free(void)
+{
+ LYFreeStringList(localhost_aliases);
+ localhost_aliases = NULL;
+}
+
+/*
+ * Utility for listing hosts to be treated as local aliases. - FM
+ */
+void LYAddLocalhostAlias(char *alias)
+{
+ char *LocalAlias = NULL;
+
+ if (!non_empty(alias))
+ return;
+
+ if (!localhost_aliases) {
+ localhost_aliases = HTList_new();
+#ifdef LY_FIND_LEAKS
+ atexit(LYLocalhostAliases_free);
+#endif
+ }
+
+ StrAllocCopy(LocalAlias, alias);
+ HTList_addObject(localhost_aliases, LocalAlias);
+
+ return;
+}
+
+/*
+ * Utility for checking URLs with a host field. Return YES only if we've
+ * listed the host as a local alias. - FM
+ */
+BOOLEAN LYisLocalAlias(const char *filename)
+{
+ char *host = NULL;
+ char *alias;
+ char *cp;
+ HTList *cur = localhost_aliases;
+
+ if (!cur || !filename)
+ return NO;
+ if (!(host = HTParse(filename, "", PARSE_HOST)))
+ return NO;
+ if (!(*host)) {
+ FREE(host);
+ return NO;
+ }
+
+ if ((cp = StrChr(host, ':')) != NULL)
+ *cp = '\0';
+
+ while (NULL != (alias = (char *) HTList_nextObject(cur))) {
+ if (LYSameFilename(host, alias)) {
+ FREE(host);
+ return YES;
+ }
+ }
+
+ FREE(host);
+ return NO;
+}
+
+/*
+ * This function checks for a URL with an unknown scheme,
+ * but for which proxying has been set up, and if so,
+ * returns PROXY_URL_TYPE. - FM
+ *
+ * If a colon is present but the string segment which
+ * precedes it is not being proxied, and we can be sure
+ * that what follows the colon is not a port field,
+ * it returns UNKNOWN_URL_TYPE. Otherwise, it returns
+ * 0 (not a URL). - FM
+ */
+UrlTypes LYCheckForProxyURL(char *filename)
+{
+ char *cp = filename;
+ char *cp1;
+ char *cp2 = NULL;
+
+ /*
+ * Don't crash on an empty argument.
+ */
+ if (isEmpty(cp))
+ return (NOT_A_URL_TYPE);
+
+ /* kill beginning spaces */
+ cp = LYSkipBlanks(cp);
+
+ /*
+ * Check for a colon, and if present,
+ * see if we have proxying set up.
+ */
+ if ((cp1 = StrChr((cp + 1), ':')) != NULL) {
+ if ((cp2 = StrChr((cp + 1), '/')) != NULL && cp2 < cp1)
+ return (NOT_A_URL_TYPE);
+ *cp1 = '\0';
+ cp2 = NULL;
+ StrAllocCopy(cp2, cp);
+ *cp1 = ':';
+ StrAllocCat(cp2, "_proxy");
+ if (LYGetEnv(cp2) != NULL) {
+ FREE(cp2);
+ return (PROXY_URL_TYPE);
+ }
+ FREE(cp2);
+#if defined (USE_DOS_DRIVES)
+ if (LYIsDosDrive(cp))
+ return (NOT_A_URL_TYPE);
+#endif
+ cp1++;
+ if (!*cp) {
+ return (NOT_A_URL_TYPE);
+ } else if (isdigit(UCH(*cp1))) {
+ while (*cp1 && isdigit(UCH(*cp1)))
+ cp1++;
+ if (*cp1 && !LYIsHtmlSep(*cp1))
+ return (UNKNOWN_URL_TYPE);
+ } else {
+ return (UNKNOWN_URL_TYPE);
+ }
+ }
+
+ return (NOT_A_URL_TYPE);
+}
+
+/*
+ * Compare a "type:" string, replacing it by the comparison-string if it
+ * matches (and return true in that case).
+ */
+static BOOLEAN compare_type(char *tst,
+ const char *cmp,
+ size_t len)
+{
+ if (!strncasecomp(tst, cmp, (int) len)) {
+ if (StrNCmp(tst, cmp, len)) {
+ size_t i;
+
+ for (i = 0; i < len; i++)
+ tst[i] = cmp[i];
+ }
+ return TRUE;
+ }
+ return FALSE;
+}
+#define CompareType(tst,cmp,len) compare_type((tst),(cmp),(size_t)(len))
+
+#define DoubleHtmlSep(s) (LYIsHtmlSep((s)[0]) && LYIsHtmlSep((s)[1]))
+#define compare_two(tst,cmp,len,limit) \
+ ((len + 2) <= limit \
+ && DoubleHtmlSep(tst + len) \
+ && CompareType(tst, cmp, len))
+
+/*
+ * Must recognize a URL and return the type. If recognized, based on a
+ * case-insensitive analysis of the scheme field, ensures that the scheme field
+ * has the expected case.
+ *
+ * Returns 0 (not a URL) for a NULL argument, one which lacks a colon.
+ *
+ * Chains to LYCheckForProxyURL() if a colon is present but the type is not
+ * recognized.
+ */
+UrlTypes is_url(char *filename)
+{
+ char *cp = filename;
+ char *cp1;
+ UrlTypes result = NOT_A_URL_TYPE;
+ int limit;
+
+ /*
+ * Don't crash on an empty argument.
+ */
+ if (isEmpty(cp))
+ return (result);
+
+ /*
+ * Can't be a URL if it lacks a colon and if it starts with '[' it's
+ * probably IPv6 address.
+ */
+ if (NULL == StrChr(cp, ':') || cp[0] == '[')
+ return (result);
+
+ /*
+ * Kill beginning spaces.
+ */
+ cp = LYSkipBlanks(cp);
+
+ /*
+ * Can't be a URL if it starts with a slash. So return immediately for
+ * this common case, also to avoid false positives if there was a colon
+ * later in the string. Also can't be a URL if it starts with a colon. -
+ * KW
+ */
+ if (*cp == ':' || LYIsHtmlSep(*cp)) {
+ result = NOT_A_URL_TYPE;
+
+ } else {
+ limit = (int) strlen(cp);
+ switch (*cp) {
+ case 'L':
+ case 'l':
+ /*
+ * Lynx internal pages ("LYNXfoo:" or "lynxfoo:") start with 'l' or
+ * 'L', other URLs aren't.
+ */
+ if (CompareType(cp, STR_LYNXEXEC, LEN_LYNXEXEC)) {
+ /*
+ * Special External Lynx type to handle execution of commands
+ * or scripts which require a pause to read the screen upon
+ * completion.
+ */
+ result = LYNXEXEC_URL_TYPE;
+
+ } else if (CompareType(cp, STR_LYNXPROG, LEN_LYNXPROG)) {
+ /*
+ * Special External Lynx type to handle execution of commands,
+ * scripts or programs which do not require a pause to read
+ * screen upon completion.
+ */
+ result = LYNXPROG_URL_TYPE;
+
+ } else if (CompareType(cp, STR_LYNXCGI, LEN_LYNXCGI)) {
+ result = LYNXCGI_URL_TYPE;
+
+ } else if (CompareType(cp, STR_LYNXPRINT, LEN_LYNXPRINT)) {
+ result = LYNXPRINT_URL_TYPE;
+
+ } else if (CompareType(cp, STR_LYNXOPTIONS, LEN_LYNXOPTIONS)) {
+ result = LYNXOPTIONS_URL_TYPE;
+
+ } else if (CompareType(cp, STR_LYNXCFG, LEN_LYNXCFG)) {
+ result = LYNXCFG_URL_TYPE;
+
+ } else if (CompareType(cp, STR_LYNXMESSAGES, LEN_LYNXMESSAGES)) {
+ result = LYNXMESSAGES_URL_TYPE;
+
+ } else if (CompareType(cp, STR_LYNXCFLAGS, LEN_LYNXCFLAGS)) {
+ result = LYNXCOMPILE_OPTS_URL_TYPE;
+
+ } else if (CompareType(cp, STR_LYNXDOWNLOAD, LEN_LYNXDOWNLOAD)) {
+ result = LYNXDOWNLOAD_URL_TYPE;
+
+ } else if (CompareType(cp, STR_LYNXDIRED, LEN_LYNXDIRED)) {
+ result = LYNXDIRED_URL_TYPE;
+
+ } else if (CompareType(cp, STR_LYNXEDITMAP, LEN_LYNXEDITMAP)) {
+ result = LYNXEDITMAP_URL_TYPE;
+
+ } else if (CompareType(cp, STR_LYNXHIST, LEN_LYNXHIST)) {
+ result = LYNXHIST_URL_TYPE;
+
+#ifdef USE_CACHEJAR
+ } else if (CompareType(cp, STR_LYNXCACHE, LEN_LYNXCACHE)) {
+ result = LYNXCACHE_URL_TYPE;
+#endif
+ } else if (CompareType(cp, STR_LYNXKEYMAP, LEN_LYNXKEYMAP)) {
+ result = LYNXKEYMAP_URL_TYPE;
+
+ } else if (CompareType(cp, STR_LYNXIMGMAP, LEN_LYNXIMGMAP)) {
+ /* force lower/uppercase of next part */
+ (void) is_url(&cp[LEN_LYNXIMGMAP]);
+ result = LYNXIMGMAP_URL_TYPE;
+
+ } else if (CompareType(cp, STR_LYNXCOOKIE, LEN_LYNXCOOKIE)) {
+ result = LYNXCOOKIE_URL_TYPE;
+
+ }
+ break;
+#ifndef DISABLE_NEWS
+ /*
+ * NEWSfoo: schemes -
+ */
+ case 'N':
+ case 'n':
+ if (CompareType(cp, STR_NEWS_URL, LEN_NEWS_URL)) {
+ result = NEWS_URL_TYPE;
+
+ } else if (CompareType(cp, STR_NNTP_URL, LEN_NNTP_URL)) {
+ result = NNTP_URL_TYPE;
+
+ } else if (CompareType(cp, "newspost:", 9)) {
+ /*
+ * Special Lynx type to handle news posts.
+ */
+ result = NEWSPOST_URL_TYPE;
+
+ } else if (CompareType(cp, "newsreply:", 10)) {
+ /*
+ * Special Lynx type to handle news replies (followups).
+ */
+ result = NEWSREPLY_URL_TYPE;
+ }
+ break;
+
+ /*
+ * SNEWSfoo: schemes -
+ */
+ case 'S':
+ case 's':
+ if (CompareType(cp, STR_SNEWS_URL, LEN_SNEWS_URL)) {
+ result = SNEWS_URL_TYPE;
+
+ } else if (CompareType(cp, "snewspost:", 10)) {
+ /*
+ * Special Lynx type to handle snews posts.
+ */
+ result = NEWSPOST_URL_TYPE;
+
+ } else if (CompareType(cp, "snewsreply:", 11)) {
+ /*
+ * Special Lynx type to handle snews replies (followups).
+ */
+ result = NEWSREPLY_URL_TYPE;
+ }
+ break;
+#endif
+ case 'M':
+ case 'm':
+ if (CompareType(cp, STR_MAILTO_URL, LEN_MAILTO_URL)) {
+ result = MAILTO_URL_TYPE;
+ }
+ break;
+
+ case 'F':
+ case 'f':
+ if (CompareType(cp, STR_FILE_URL, LEN_FILE_URL)) {
+ if (LYisLocalFile(cp)) {
+ result = FILE_URL_TYPE;
+ } else if (DoubleHtmlSep(cp + LEN_FILE_URL)) {
+ result = FTP_URL_TYPE;
+ }
+ }
+#ifndef DISABLE_FTP
+ else if (compare_two(cp, STR_FTP_URL, LEN_FTP_URL, limit)) {
+ result = FTP_URL_TYPE;
+ }
+#endif
+#ifndef DISABLE_FINGER
+ else if (compare_two(cp, STR_FINGER_URL, LEN_FINGER_URL, limit)) {
+ result = FINGER_URL_TYPE;
+ }
+#endif
+ break;
+
+ case 'B':
+ case 'b':
+#ifndef DISABLE_BIBP
+ if (CompareType(cp, STR_BIBP_URL, LEN_BIBP_URL)) {
+ result = BIBP_URL_TYPE;
+ }
+#endif
+ break;
+
+ case 'D':
+ case 'd':
+ if (CompareType(cp, "data:", 5)) {
+ result = DATA_URL_TYPE;
+ }
+ break;
+
+ default:
+ if (limit >= 3
+ && ((cp1 = StrChr(cp + 3, ':')) == NULL
+ || !DoubleHtmlSep(cp1 + 1))) {
+ /*
+ * If it doesn't contain "://", and it's not one of the the
+ * above, it can't be a URL with a scheme we know, so check if
+ * it's an unknown scheme for which proxying has been set up.
+ * - FM
+ */
+ if (cp1 != NULL
+ && (cp1 - cp) > 1 /* exclude DOS-style device:/path */
+ && LYisAbsPath(cp1 + 1)) {
+ result = NCFTP_URL_TYPE;
+ }
+
+ } else {
+ switch (*cp) {
+ case 'H':
+ case 'h':
+ if (CompareType(cp, STR_HTTP_URL, LEN_HTTP_URL)) {
+ result = HTTP_URL_TYPE;
+
+ } else if (CompareType(cp, STR_HTTPS_URL, LEN_HTTPS_URL)) {
+ result = HTTPS_URL_TYPE;
+ }
+ break;
+
+#ifndef DISABLE_GOPHER
+ case 'G':
+ case 'g':
+ if (CompareType(cp, STR_GOPHER_URL, LEN_GOPHER_URL)) {
+ if (strlen(cp) >= 11
+ && (cp1 = StrChr(cp + 11, '/')) != NULL) {
+
+ if (TOUPPER(*(cp1 + 1)) == 'H' || *(cp1 + 1) == 'w')
+ /* if this is a gopher html type */
+ result = HTML_GOPHER_URL_TYPE;
+ else if (*(cp1 + 1) == 'T' || *(cp1 + 1) == '8')
+ result = TELNET_GOPHER_URL_TYPE;
+ else if (*(cp1 + 1) == '7')
+ result = INDEX_GOPHER_URL_TYPE;
+ else
+ result = GOPHER_URL_TYPE;
+ } else {
+ result = GOPHER_URL_TYPE;
+ }
+ }
+ break;
+#endif
+ case 'W':
+ case 'w':
+ if (CompareType(cp, STR_WAIS_URL, LEN_WAIS_URL)) {
+ result = WAIS_URL_TYPE;
+ }
+ break;
+
+ case 'T':
+ case 't':
+ if (CompareType(cp, STR_TELNET_URL, LEN_TELNET_URL)) {
+ result = TELNET_URL_TYPE;
+
+ } else if (CompareType(cp, STR_TN3270_URL, LEN_TN3270_URL)) {
+ result = TN3270_URL_TYPE;
+ }
+ break;
+
+ case 'R':
+ case 'r':
+ if (CompareType(cp, STR_RLOGIN_URL, LEN_RLOGIN_URL)) {
+ result = RLOGIN_URL_TYPE;
+ }
+ break;
+
+ case 'C':
+ case 'c':
+ if (CompareType(cp, STR_CSO_URL, LEN_CSO_URL)) {
+ result = CSO_URL_TYPE;
+ }
+ break;
+
+ case 'A':
+ case 'a':
+ if (CompareType(cp, "afs:", 4)) {
+ result = AFS_URL_TYPE;
+ }
+ break;
+
+ case 'P':
+ case 'p':
+ if (CompareType(cp, "prospero:", 9)) {
+ result = PROSPERO_URL_TYPE;
+ }
+ break;
+ }
+ }
+ }
+ /*
+ * Check if it is an unknown scheme for which proxying has been set up.
+ */
+ if (result == NOT_A_URL_TYPE)
+ result = LYCheckForProxyURL(filename);
+ }
+ return result;
+}
+
+/*
+ * Sometimes it is just expected that curses is on when an alert or other
+ * statusline message needs to be shown and we are not just dumping
+ * immediately. Calling this will 'fix' it, but may not always be appropriate.
+ * - kw
+ */
+void LYFixCursesOn(const char *reason)
+{
+ if (dump_output_immediately || LYCursesON)
+ return;
+ if (reason) {
+ CTRACE((tfp, "Forcing curses on to %s\n", reason));
+ }
+ start_curses();
+}
+
+/*
+ * Most protocol modules called through HTLoad* expect that curses is on unless
+ * dump_output_immediately is set, so that statusline messages can be shown.
+ * Some protocols expect the opposite, namely telnet and friends. This
+ * function should be called after the 'physical' URL for accessing addr has
+ * been established. It does the right thing to the degree that curses is
+ * turned on for known problem cases. In any normal circumstances this should
+ * never apply, but proxying or rule substitution is not prevented for
+ * telnet-like URLs, and this 'fix' avoids some crashes that can otherwise
+ * occur. - kw
+ */
+BOOLEAN LYFixCursesOnForAccess(const char *addr,
+ const char *physical)
+{
+ /*
+ * If curses is off when maybe it shouldn't...
+ */
+ if (!dump_output_immediately && !LYCursesON && physical) {
+ char *cp1;
+
+ /*
+ * If requested resource wants to be accessed with curses off, and
+ * getfile() would indeed have turned curses off for it...
+ */
+ if (strstr(addr, "://") != NULL &&
+ (isTELNET_URL(addr) ||
+ isRLOGIN_URL(addr) ||
+ isTN3270_URL(addr) ||
+ (!isGOPHER_URL(addr) &&
+ (cp1 = StrChr(addr + 11, '/')) != NULL &&
+ (*(cp1 + 1) == 'T' || *(cp1 + 1) == '8')))) {
+ /*
+ * If actual access that will be done is ok with curses off, then
+ * do nothing special, else force curses on. - kw
+ */
+ if (!isTELNET_URL(physical) &&
+ !isRLOGIN_URL(physical) &&
+ !isTN3270_URL(physical)) {
+ start_curses();
+ HTAlert(gettext("Unexpected access protocol for this URL scheme."));
+ return TRUE;
+ }
+ }
+ }
+ return FALSE;
+}
+
+/*
+ * Determine whether we allow HEAD and related flags for a URL. - kw
+ */
+BOOLEAN LYCanDoHEAD(const char *address)
+{
+ char *temp0 = NULL;
+ int isurl;
+
+ if (!non_empty(address))
+ return FALSE;
+ if (!StrNCmp(address, "http", 4))
+ return TRUE;
+ /* Make copy for is_url() since caller may not care for case changes */
+ StrAllocCopy(temp0, address);
+ isurl = is_url(temp0);
+ if (!isurl) {
+ FREE(temp0);
+ return FALSE;
+ }
+ if (isurl == LYNXCGI_URL_TYPE) {
+ FREE(temp0);
+#if defined(LYNXCGI_LINKS) && !defined(VMS)
+ return TRUE;
+#else
+ return FALSE;
+#endif
+ }
+ /*
+ * The idea of the following is to allow HEAD for news URLs that identify
+ * single articles, not those that identify ranges of articles or groups or
+ * a list of groups. - kw
+ */
+ if (isurl == NEWS_URL_TYPE || isurl == NNTP_URL_TYPE) {
+ char *temp = HTParse(address, "", PARSE_PATH);
+ char *cp = strrchr(temp, '/');
+
+ if (StrChr((cp ? cp : temp), '@') != NULL) {
+ FREE(temp0);
+ FREE(temp);
+ return TRUE;
+ }
+ if (cp && isdigit(UCH(cp[1])) && StrChr(cp, '-') == NULL) {
+ FREE(temp0);
+ FREE(temp);
+ return TRUE;
+ }
+ FREE(temp);
+ }
+#define ALLOW_PROXY_HEAD
+/* If defined, also allow head requests for URLs proxied through the "http" or
+ * "lynxcgi" protocols, which understand HEAD. Only the proxy environment
+ * variables are checked, not the HTRules system. - kw
+ */
+#ifdef ALLOW_PROXY_HEAD
+ if (isurl != FILE_URL_TYPE) {
+ char *acc_method = HTParse(temp0, "", PARSE_ACCESS);
+
+ if (non_empty(acc_method)) {
+ char *proxy;
+
+ StrAllocCat(acc_method, "_proxy");
+ proxy = LYGetEnv(acc_method);
+ if (proxy && (isHTTP_URL(proxy) ||
+ isLYNXCGI(proxy)) &&
+ !override_proxy(temp0)) {
+ FREE(temp0);
+ FREE(acc_method);
+ return TRUE;
+ }
+ }
+ FREE(acc_method);
+ }
+#endif /* ALLOW_PROXY_HEAD */
+
+ FREE(temp0);
+ return FALSE;
+}
+
+/*
+ * Close an input file.
+ */
+BOOLEAN LYCloseInput(FILE *fp)
+{
+ int result = FALSE;
+
+ if (fp != 0) {
+ int err = ferror(fp);
+ LY_TEMP *p = FindTempfileByFP(fp);
+
+ fclose(fp);
+ if (p != 0) {
+ p->file = 0;
+ }
+ if (!err) {
+ result = TRUE;
+ }
+ }
+ return (BOOLEAN) result;
+}
+
+/*
+ * Close an output file, reporting any problems with writing to it.
+ */
+BOOLEAN LYCloseOutput(FILE *fp)
+{
+ int result = FALSE;
+
+ if (fp != 0) {
+ int err = ferror(fp);
+ LY_TEMP *p = FindTempfileByFP(fp);
+
+ fclose(fp);
+ if (p != 0) {
+ p->file = 0;
+ }
+ if (!err) {
+ result = TRUE;
+ }
+ }
+ if (!result) {
+ HTAlert(CANNOT_WRITE_TO_FILE);
+ }
+ return (BOOLEAN) result;
+}
+
+/*
+ * Test if we'll be able to write a file. If not, warn the user.
+ */
+BOOLEAN LYCanWriteFile(const char *filename)
+{
+ BOOLEAN result = FALSE;
+
+ if (LYCloseOutput(fopen(filename, "w"))) {
+ if (remove(filename) == 0) {
+ result = TRUE;
+ }
+ } else {
+ _statusline(NEW_FILENAME_PROMPT);
+ }
+ return result;
+}
+
+/*
+ * Test if we'll be able to read a file.
+ */
+BOOLEAN LYCanReadFile(const char *filename)
+{
+ FILE *fp;
+ BOOLEAN result = FALSE;
+
+ if (non_empty(filename)) {
+ if ((fp = fopen(filename, "r")) != 0) {
+ result = LYCloseInput(fp);
+ }
+ }
+ return result;
+}
+
+char *LYFindConfigFile(const char *nominal, const char *dftfile)
+{
+ char *result = 0;
+ char *path = 0;
+ char *head = 0;
+ char *leaf;
+ char *item;
+
+ if (non_empty(nominal)) {
+ StrAllocCopy(result, nominal);
+
+ /*
+ * Look for it in as-is - first expanding any tilde.
+ */
+ LYTildeExpand(&result, TRUE);
+ if (!LYCanReadFile(result)) {
+ const char *cfg_path;
+ char *list = 0;
+ BOOLEAN found = FALSE;
+
+ /*
+ * Now try in the config-path.
+ */
+ if ((cfg_path = LYGetEnv("LYNX_CFG_PATH")) == NULL)
+ cfg_path = LYNX_CFG_PATH;
+
+ StrAllocCopy(list, cfg_path);
+ path = list;
+ while ((item = LYstrsep(&path, PATH_SEPARATOR)) != 0) {
+ if (isEmpty(item))
+ continue;
+ FREE(result);
+ HTSprintf0(&result, "%s%s%s", item, FILE_SEPARATOR, nominal);
+ LYTildeExpand(&result, TRUE);
+ if (LYCanReadFile(result)) {
+ found = TRUE;
+ break;
+ }
+ }
+ FREE(list);
+
+ if (!found) {
+ /*
+ * If not found, try finding it in the same directory as the
+ * compiled-in location of the default file.
+ */
+ StrAllocCopy(head, dftfile);
+ if (strcmp(nominal, dftfile) &&
+ (leaf = LYPathLeaf(head)) != head) {
+
+ head[leaf - head] = '\0';
+ StrAllocCopy(result, head);
+ StrAllocCat(result, nominal);
+
+ if (!LYCanReadFile(result)) {
+ FREE(result);
+ }
+ }
+#ifdef USE_PROGRAM_DIR
+ else {
+ /*
+ * Finally, try in the same directory as the executable.
+ */
+ StrAllocCopy(result, program_dir);
+ LYAddPathSep(&result);
+ StrAllocCat(result, nominal);
+ LYTildeExpand(&result, TRUE);
+ if (!LYCanReadFile(result)) {
+ FREE(result);
+ }
+ }
+#endif
+ }
+ }
+
+ }
+ FREE(head);
+ return result;
+}
+
+/*
+ * Remove backslashes from any string.
+ */
+void remove_backslashes(char *buf)
+{
+ char *cp;
+
+ for (cp = buf; *cp != '\0'; cp++) {
+
+ if (*cp != '\\') { /* don't print slashes */
+ *buf = *cp;
+ buf++;
+ } else if (*cp == '\\' && /* print one slash if there */
+ *(cp + 1) == '\\') { /* are two in a row */
+ *buf = *cp;
+ buf++;
+ }
+ }
+ *buf = '\0';
+ return;
+}
+
+/*
+ * Checks to see if the current process is attached via a terminal in the local
+ * domain.
+ */
+BOOLEAN inlocaldomain(void)
+{
+ BOOLEAN result = TRUE;
+
+#ifdef HAVE_UTMP
+ int n;
+ FILE *fp;
+ struct utmp me;
+ char *cp, *mytty = NULL;
+
+ if ((cp = ttyname(0))) {
+ mytty = cp;
+ if (!strncmp(mytty, "/dev/", 5)) {
+ mytty += 5; /* pty's can be like "pts/0" in utmp */
+ } else {
+ if ((mytty = LYLastPathSep(cp)) != 0)
+ ++mytty;
+ }
+ }
+
+ result = FALSE;
+ if (mytty && (fp = fopen(UTMP_FILE, "r")) != NULL) {
+ size_t ulen = strlen(mytty);
+
+ if (ulen > sizeof(me.ut_line))
+ ulen = sizeof(me.ut_line);
+ do {
+ n = (int) fread((char *) &me, sizeof(struct utmp), (size_t) 1, fp);
+
+ if (n <= 0)
+ break;
+ } while (memcmp(me.ut_line, mytty, ulen));
+ (void) LYCloseInput(fp);
+
+ if (n > 0) {
+ for (ulen = 0; ulen < sizeof(me.ut_host); ++ulen) {
+ if (me.ut_host[ulen] == '\0')
+ break;
+ }
+ if (ulen > strlen(LYLocalDomain) &&
+ !memcmp(LYLocalDomain,
+ me.ut_host + ulen - strlen(LYLocalDomain),
+ strlen(LYLocalDomain))) {
+ result = TRUE;
+ }
+#ifdef LINUX
+ /* Linux fix to check for local user. J.Cullen 11Jul94 */
+ else if (ulen == 0) {
+ result = TRUE;
+ }
+#endif /* LINUX */
+ }
+
+ } else {
+ CTRACE((tfp,
+ "Could not get ttyname (returned %s) or open UTMP file %s\n",
+ NONNULL(cp), UTMP_FILE));
+ }
+#else
+ CTRACE((tfp, "LYUtils: inlocaldomain() not supported.\n"));
+#endif /* HAVE_UTMP */
+ return (result);
+}
+
+#ifdef HAVE_SIGACTION
+/*
+ * An extended alternative for calling signal(), sets some flags for signal
+ * handler as we want them if that functionality is available. (We don't
+ * return anything from this function since the return value would currently be
+ * ignored anyway.) - kw
+ */
+void LYExtSignal(int sig,
+ LYSigHandlerFunc_t *handler)
+{
+#ifdef SIGWINCH
+ /* add more cases to if(condition) if required... */
+ if (sig == SIGWINCH && LYNonRestartingSIGWINCH) {
+ struct sigaction act;
+
+ act.sa_handler = handler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = 0;
+ sigaction(sig, &act, NULL);
+ } else
+#endif /* defined(SIGWINCH) */
+ signal(sig, handler);
+}
+#endif /* HAVE_SIGACTION */
+
+#if defined(SIGTSTP) && !defined(USE_SLANG)
+#ifdef HAVE_SIGACTION
+/*
+ * For switching a signal's handling between SIG_DFL and something (possibly)
+ * different that may have been set up by lynx code or e.g. by curses library.
+ * Uses sigaction to preserve / restore as much state as possible.
+ *
+ * Second arg is where to save or restore from.
+ *
+ * Third arg to_dfl specifies what to do:
+ * 1 Save current state in where, set handling to SIG_DFL
+ * 0 Restore current state to previously saved one in where
+ *
+ * Currently only used for SIGTSTP without SLANG, to prevent (n)curses signal
+ * handler from running while lynx is waiting in system() for an interactive
+ * command like an editor. - kw
+ */
+static BOOLEAN LYToggleSigDfl(int sig,
+ struct sigaction *where,
+ int to_dfl)
+{
+ int rv = -1;
+ struct sigaction oact;
+
+ if (to_dfl == 1) {
+ rv = sigaction(sig, NULL, &oact);
+ if (rv == 0) {
+ if (oact.sa_handler != SIG_DFL) {
+ oact.sa_handler = SIG_DFL;
+ rv = sigaction(sig, &oact, where);
+ } else if (where) {
+ memcpy(where, &oact, sizeof(oact));
+ rv = 0;
+ }
+ }
+ } else {
+ rv = sigaction(sig, where, NULL);
+ }
+ if (rv != 0) {
+ CTRACE((tfp, "Error in LYToggleSigDfl: %s\n", LYStrerror(errno)));
+ return FALSE;
+ } else
+ return TRUE;
+}
+#endif /* HAVE_SIGACTION */
+#endif /* SIGTSTP && !USE_SLANG */
+
+/**************
+ * This bit of code catches window size change signals
+ */
+
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
+/* For systems that have both, but both can't be included, duh (or neither) */
+/* FIXME: this whole chunk may be redundant */
+#ifdef TERMIO_AND_CURSES
+# ifdef TERMIO_AND_TERMIOS
+# include <termio.h>
+# else
+# ifdef HAVE_TERMIOS_H
+# include <termios.h>
+# else
+# ifdef HAVE_TERMIO_H
+# include <termio.h>
+# endif /* HAVE_TERMIO_H */
+# endif /* HAVE_TERMIOS_H */
+# endif /* TERMIO_AND_TERMIOS */
+#endif /* TERMIO_AND_CURSES */
+
+void size_change(int sig GCC_UNUSED)
+{
+ int old_lines = LYlines;
+ int old_cols = LYcols;
+
+#ifdef USE_SLANG
+#if defined(VMS) || defined(UNIX)
+ SLtt_get_screen_size();
+#endif /* VMS || UNIX */
+ LYlines = SLtt_Screen_Rows;
+ LYcols = SLtt_Screen_Cols;
+ if (sig == 0)
+ /*
+ * Called from start_curses().
+ */
+ return;
+#else /* Curses: */
+#ifdef HAVE_SIZECHANGE
+#ifdef TIOCGSIZE
+ struct ttysize win;
+
+#else
+#ifdef TIOCGWINSZ
+ struct winsize win;
+#endif /* TIOCGWINSZ */
+#endif /* TIOCGSIZE */
+
+#ifdef TIOCGSIZE
+ if (ioctl(0, TIOCGSIZE, &win) == 0) {
+ if (win.ts_lines != 0) {
+ LYlines = win.ts_lines;
+ }
+ if (win.ts_cols != 0) {
+ LYcols = win.ts_cols;
+ }
+ }
+#else
+#ifdef TIOCGWINSZ
+ if (ioctl(0, (long) TIOCGWINSZ, &win) == 0) {
+ if (win.ws_row != 0) {
+ LYlines = win.ws_row;
+ }
+ if (win.ws_col != 0) {
+ LYcols = win.ws_col;
+ }
+ }
+#endif /* TIOCGWINSZ */
+#endif /* TIOCGSIZE */
+#endif /* HAVE_SIZECHANGE */
+
+#ifdef __EMX__
+ {
+ int scrsize[2];
+
+ _scrsize(scrsize);
+ LYcols = scrsize[0];
+ LYlines = scrsize[1];
+ }
+#endif
+
+ if (LYlines <= 0)
+ LYlines = DFT_ROWS;
+ if (LYcols <= 0)
+ LYcols = DFT_COLS;
+#endif /* USE_SLANG */
+
+ /*
+ * Check if the screen size has actually changed. - AJL
+ */
+ if (LYlines != old_lines || LYcols != old_cols) {
+ recent_sizechange = TRUE;
+ CTRACE((tfp, "Window size changed from (%d,%d) to (%d,%d)\n",
+ old_lines, old_cols, LYlines, LYcols));
+#if defined(CAN_SWITCH_DISPLAY_CHARSET) && defined(CAN_AUTODETECT_DISPLAY_CHARSET)
+ /* May need to reload the font due to different char-box size */
+ if (current_char_set != auto_display_charset)
+ Switch_Display_Charset(current_char_set, SWITCH_DISPLAY_CHARSET_RESIZE);
+#endif
+ }
+#ifdef SIGWINCH
+ LYExtSignal(SIGWINCH, size_change);
+#endif /* SIGWINCH */
+
+ return;
+}
+
+/*
+ * Utility for freeing the list of previous suggested filenames. - FM
+ */
+void HTSugFilenames_free(void)
+{
+ LYFreeStringList(sug_filenames);
+ sug_filenames = NULL;
+}
+
+/*
+ * Utility for listing suggested filenames, making any repeated filenames the
+ * most current in the list. - FM
+ */
+void HTAddSugFilename(char *fname)
+{
+ char *tmp = NULL;
+ char *old;
+ HTList *cur;
+
+ if (!non_empty(fname))
+ return;
+
+ StrAllocCopy(tmp, fname);
+
+ if (!sug_filenames) {
+ sug_filenames = HTList_new();
+#ifdef LY_FIND_LEAKS
+ atexit(HTSugFilenames_free);
+#endif
+ HTList_addObject(sug_filenames, tmp);
+ return;
+ }
+
+ cur = sug_filenames;
+ while (NULL != (old = (char *) HTList_nextObject(cur))) {
+ if (!strcmp(old, tmp)) {
+ HTList_removeObject(sug_filenames, old);
+ FREE(old);
+ break;
+ }
+ }
+ HTList_addObject(sug_filenames, tmp);
+
+ return;
+}
+
+/*
+ * CHANGE_SUG_FILENAME -- Foteos Macrides 29-Dec-1993 Upgraded for use with
+ * Lynx2.2 - FM 17-Jan-1994
+ */
+void change_sug_filename(char *fname)
+{
+ const char *cp2;
+ char *temp = 0, *cp, *cp1, *end;
+
+#ifdef VMS
+ char *dot;
+ int j, k;
+#endif /* VMS */
+
+ /*
+ * Establish the current end of fname.
+ */
+ end = fname + strlen(fname);
+
+ /*
+ * Unescape fname.
+ */
+ HTUnEscape(fname);
+
+ /*
+ * Rename any temporary files.
+ */
+ cp2 = wwwName(lynx_temp_space);
+ if (LYIsHtmlSep(*cp2)) {
+ HTSprintf0(&temp, "file://localhost%s" PID_FMT, cp2, GETPID());
+ } else {
+ HTSprintf0(&temp, "file://localhost/%s" PID_FMT, cp2, GETPID());
+ }
+ if (!StrNCmp(fname, temp, strlen(temp))) {
+ if ((cp = strrchr(fname, '.')) != 0) {
+ if (strlen(cp) > (strlen(temp) - 4))
+ cp = NULL;
+ }
+ StrAllocCopy(temp, NonNull(cp));
+ sprintf(fname, "temp%.*s", LY_MAXPATH - 10, temp);
+ }
+ FREE(temp);
+
+ if (fname[strlen(fname) - 1] == '/')
+ /*
+ * Hmm... we have a directory name. It is annoying to see a
+ * scheme+host+path name as a suggested one, let's remove the
+ * last_slash and go ahead like we have a file name. - LP
+ */
+ fname[strlen(fname) - 1] = '\0';
+
+ /*
+ * Remove everything up the the last_slash if there is one.
+ */
+ if ((cp = strrchr(fname, '/')) != NULL && strlen(cp) > 1) {
+ cp1 = fname;
+ /*
+ * Go past the slash.
+ */
+ cp++;
+ for (; *cp != '\0'; cp++, cp1++) {
+ *cp1 = *cp;
+ }
+ *cp1 = '\0';
+ }
+#ifdef _WINDOWS /* 1998/05/05 (Tue) 10:08:05 */
+ if ((cp = strrchr(fname, '=')) != NULL && strlen(cp) > 1) {
+ cp1 = fname;
+ /*
+ * Go past the '='.
+ */
+ cp++;
+ for (; *cp != '\0'; cp++, cp1++) {
+ *cp1 = *cp;
+ }
+ *cp1 = '\0';
+ }
+#endif
+
+ /*
+ * Trim off date-size suffix, if present.
+ */
+ if ((*(end - 1) == ']') && ((cp = strrchr(fname, '[')) != NULL) &&
+ (cp > fname) && *(--cp) == ' ') {
+ while (*cp == ' ') {
+ *(cp--) = '\0';
+ }
+ }
+#ifdef VMS
+ /*
+ * Trim off VMS device and/or directory specs, if present.
+ */
+ if ((cp = StrChr(fname, '[')) != NULL &&
+ (cp1 = strrchr(cp, ']')) != NULL && strlen(cp1) > 1) {
+ cp1++;
+ for (cp = fname; *cp1 != '\0'; cp1++) {
+ *(cp++) = *cp1;
+ }
+ *cp = '\0';
+ }
+ /*
+ * Replace illegal or problem characters.
+ */
+ dot = fname + strlen(fname);
+ for (cp = fname; cp < dot; cp++) {
+ /*
+ * Replace with underscores.
+ */
+ if (*cp == ' ' || *cp == '/' || *cp == ':' ||
+ *cp == '[' || *cp == ']' || *cp == '&') {
+ *cp = '_';
+ /*
+ * Replace with dashes.
+ */
+ } else if (*cp == '!' || *cp == '?' || *cp == '\'' ||
+ *cp == ',' || *cp == ':' || *cp == '"' ||
+ *cp == '+' || *cp == '@' || *cp == '\\' ||
+ *cp == '(' || *cp == ')' || *cp == '=' ||
+ *cp == '<' || *cp == '>' || *cp == '#' ||
+ *cp == '%' || *cp == '*' || *cp == '`' ||
+ *cp == '~' || *cp == '^' || *cp == '|' ||
+ *cp < ' ' || (UCH(*cp)) > 126) {
+ *cp = '-';
+ }
+ }
+
+ /*
+ * Collapse any serial underscores.
+ */
+ cp = fname + 1;
+ j = 0;
+ while (cp < dot) {
+ if (fname[j] == '_' && *cp == '_') {
+ cp++;
+ } else {
+ fname[++j] = *cp++;
+ }
+ }
+ fname[++j] = '\0';
+
+ /*
+ * Collapse any serial dashes.
+ */
+ dot = fname + (strlen(fname));
+ cp = fname + 1;
+ j = 0;
+ while (cp < dot) {
+ if (fname[j] == '-' && *cp == '-') {
+ cp++;
+ } else {
+ fname[++j] = *cp++;
+ }
+ }
+ fname[++j] = '\0';
+
+ /*
+ * Trim any trailing or leading underscores or dashes.
+ */
+ cp = fname + (strlen(fname)) - 1;
+ while (*cp == '_' || *cp == '-') {
+ *cp-- = '\0';
+ }
+ if (fname[0] == '_' || fname[0] == '-') {
+ dot = fname + (strlen(fname));
+ cp = fname;
+ while ((*cp == '_' || *cp == '-') && cp < dot) {
+ cp++;
+ }
+ j = 0;
+ while (cp < dot) {
+ fname[j++] = *cp++;
+ }
+ fname[j] = '\0';
+ }
+
+ /*
+ * Replace all but the last period with _'s, or second to last if last is
+ * followed by a terminal Z or z, or GZ or gz,
+ * e.g., convert foo.tar.Z to foo.tar_Z
+ * or, convert foo.tar.gz to foo.tar-gz
+ */
+ j = strlen(fname) - 1;
+ if ((dot = strrchr(fname, '.')) != NULL) {
+ if (TOUPPER(fname[j]) == 'Z') {
+ if ((fname[j - 1] == '.') &&
+ (((cp = StrChr(fname, '.')) != NULL) && cp < dot)) {
+ *dot = '_';
+ dot = strrchr(fname, '.');
+ } else if (((TOUPPER(fname[j - 1]) == 'G') &&
+ fname[j - 2] == '.') &&
+ (((cp = StrChr(fname, '.')) != NULL) && cp < dot)) {
+ *dot = '-';
+ dot = strrchr(fname, '.');
+ }
+ }
+ cp = fname;
+ while ((cp = StrChr(cp, '.')) != NULL && cp < dot) {
+ *cp = '_';
+ }
+
+ /*
+ * But if the root is > 39 characters, move the period appropriately to
+ * the left.
+ */
+ while (dot - fname > 39) {
+ *dot = '\0';
+ if ((cp = strrchr(fname, '_')) != NULL) {
+ *cp = '.';
+ *dot = '_';
+ } else if ((cp = strrchr(fname, '-')) != NULL) {
+ *cp = '.';
+ *dot = '_';
+ } else if (*(dot + 1) == '\0') {
+ j = strlen(fname);
+ while (j > 39) {
+ fname[j] = fname[j - 1];
+ j--;
+ }
+ fname[j] = '.';
+ } else {
+ *dot = '.';
+ j = 39;
+ k = 0;
+ while (dot[k] != '\0') {
+ fname[j++] = dot[k++];
+ }
+ fname[j] = '\0';
+ }
+ dot = strrchr(fname, '.');
+ }
+
+ /*
+ * Make sure the extension is < 40 characters.
+ */
+ if ((fname + strlen(fname) - dot) > 39) {
+ *(dot + 40) = '\0';
+ }
+
+ /*
+ * Trim trailing dashes or underscores.
+ */
+ j = (strlen(fname) - 1);
+ while (fname[j] == '_' || fname[j] == '-') {
+ fname[j--] = '\0';
+ }
+ } else {
+ /*
+ * No period, so put one on the end, or after the 39th character,
+ * trimming trailing dashes or underscores.
+ */
+ if (strlen(fname) > 39) {
+ fname[39] = '\0';
+ }
+ j = (strlen(fname) - 1);
+ while ((fname[j] == '_') || (fname[j] == '-')) {
+ j--;
+ }
+ fname[++j] = '.';
+ fname[++j] = '\0';
+ }
+
+#else /* Not VMS (UNIX): */
+
+ /*
+ * Replace problem characters.
+ */
+ for (cp = fname; *cp != '\0'; cp++) {
+ switch (*cp) {
+ case '\'':
+ case '"':
+ case '/':
+ case ' ':
+ *cp = '-';
+ }
+ }
+#endif /* VMS (UNIX) */
+
+ /*
+ * Make sure the rest of the original string in nulled.
+ */
+ cp = fname + strlen(fname);
+ while (cp < end) {
+ *cp++ = '\0';
+ }
+
+ return;
+}
+
+/*
+ * Construct a temporary-filename. Assumes result is LY_MAXPATH chars long.
+ */
+static int fmt_tempname(char *result,
+ const char *prefix,
+ const char *suffix)
+{
+ int code;
+
+#ifdef HAVE_RAND_TEMPNAME
+#define SIZE_TEMPNAME ((MAX_TEMPNAME / BITS_PER_CHAR) + 1)
+ static BOOL first = TRUE;
+ static int names_used = 0;
+ static unsigned char used_tempname[SIZE_TEMPNAME];
+ unsigned offset, mask;
+#endif
+ static unsigned counter;
+ char leaf[LY_MAXPATH];
+
+ if (prefix == 0)
+ prefix = "";
+ if (suffix == 0)
+ suffix = "";
+ /*
+ * Prefer a random value rather than a counter.
+ */
+#ifdef HAVE_RAND_TEMPNAME
+ if (first) {
+ lynx_srand((unsigned) ((long) time((time_t *) NULL) + (long) result));
+ first = FALSE;
+ }
+
+ /* We don't really need all of the bits from rand(). The high-order bits
+ * are the more-random portion in any case, but limiting the width of the
+ * generated name is done partly to avoid problems on systems that may not
+ * support long filenames.
+ */
+ counter = MAX_TEMPNAME;
+ if (names_used < MAX_TEMPNAME) {
+ long get_rand = (long) lynx_rand();
+ long max_rand = (long) LYNX_RAND_MAX;
+
+ counter = (unsigned) (((float) MAX_TEMPNAME * (float) get_rand) /
+ (float) max_rand + 1);
+ /*
+ * Avoid reusing a temporary name, since there are places in the code
+ * which can refer to a temporary filename even after it has been
+ * closed and removed from the filesystem.
+ */
+ do {
+ counter %= MAX_TEMPNAME;
+ offset = counter / BITS_PER_CHAR;
+ mask = (unsigned) (1 << (counter % BITS_PER_CHAR));
+ if ((used_tempname[offset] & mask) == 0) {
+ names_used++;
+ used_tempname[offset] |= UCH(mask);
+ break;
+ }
+ } while ((used_tempname[offset] & mask) == 0);
+ }
+ if (names_used >= MAX_TEMPNAME)
+ HTAlert(gettext("Too many tempfiles"));
+#else
+ counter++;
+#endif
+
+#ifdef FNAMES_8_3
+ /*
+ * The 'lynx_temp_space' string ends with a '/' or '\\', so we only have to
+ * limit the length of the leaf. As received (e.g., from HTCompressed),
+ * the suffix may contain more than a ".htm", e.g., "-txt.gz", so we trim
+ * off from the filename portion to make room.
+ */
+ sprintf(leaf, PID_FMT PID_FMT, counter, GETPID());
+ if (strlen(leaf) > 8)
+ leaf[8] = 0;
+ if (strlen(suffix) > 4 || *suffix != '.') {
+ const char *tail = StrChr(suffix, '.');
+
+ if (tail == 0)
+ tail = suffix + strlen(suffix);
+ if (8 - (tail - suffix) >= 0)
+ leaf[8 - (tail - suffix)] = 0;
+ }
+ strcat(leaf, suffix);
+#else
+ sprintf(leaf, "L" PID_FMT "-%uTMP%s", GETPID(), counter, suffix);
+#endif
+ /*
+ * Someone could have configured the temporary pathname to be too long.
+ */
+ if ((strlen(prefix) + strlen(leaf)) < LY_MAXPATH) {
+ sprintf(result, "%s%s", prefix, leaf);
+ code = TRUE;
+ } else {
+ sprintf(result, "%.*s", LY_MAXPATH - 1, leaf);
+ code = FALSE;
+ }
+ CTRACE((tfp, "-> '%s'\n", result));
+ return (code);
+}
+
+/*
+ * Convert 4, 6, 2, 8 to left, right, down, up, etc.
+ */
+int number2arrows(int number)
+{
+ switch (number) {
+ case '1':
+ number = END_KEY;
+ break;
+ case '2':
+ number = DNARROW_KEY;
+ break;
+ case '3':
+ number = PGDOWN_KEY;
+ break;
+ case '4':
+ number = LTARROW_KEY;
+ break;
+ case '5':
+ number = DO_NOTHING;
+ break;
+ case '6':
+ number = RTARROW_KEY;
+ break;
+ case '7':
+ number = HOME_KEY;
+ break;
+ case '8':
+ number = UPARROW_KEY;
+ break;
+ case '9':
+ number = PGUP_KEY;
+ break;
+ }
+
+ return (number);
+}
+
+/*
+ * parse_restrictions takes a string of comma-separated restrictions and sets
+ * the corresponding flags to restrict the facilities available.
+ */
+/* The first two are special: we want to record whether "default" or "all"
+ * restrictions were applied, in addition to the detailed effects of those
+ * options. - kw
+ */
+/* skip the special flags when processing "all" and "default": */
+#define N_SPECIAL_RESTRICT_OPTIONS 2
+/* *INDENT-OFF* */
+static const struct {
+ const char *name;
+ BOOLEAN *flag;
+ BOOLEAN can;
+} restrictions[] = {
+ { "default", &had_restrictions_default, TRUE },
+ { "all", &had_restrictions_all, TRUE },
+ { "inside_telnet", &no_inside_telnet, CAN_ANONYMOUS_INSIDE_DOMAIN_TELNET },
+ { "outside_telnet", &no_outside_telnet, CAN_ANONYMOUS_OUTSIDE_DOMAIN_TELNET },
+ { "telnet_port", &no_telnet_port, CAN_ANONYMOUS_GOTO_TELNET_PORT },
+ { "inside_ftp", &no_inside_ftp, CAN_ANONYMOUS_INSIDE_DOMAIN_FTP },
+ { "outside_ftp", &no_outside_ftp, CAN_ANONYMOUS_OUTSIDE_DOMAIN_FTP },
+ { "inside_rlogin", &no_inside_rlogin, CAN_ANONYMOUS_INSIDE_DOMAIN_RLOGIN },
+ { "outside_rlogin", &no_outside_rlogin, CAN_ANONYMOUS_OUTSIDE_DOMAIN_RLOGIN },
+ { "suspend", &no_suspend, FALSE },
+ { "editor", &no_editor, FALSE },
+ { "shell", &no_shell, FALSE },
+ { "bookmark", &no_bookmark, FALSE },
+ { "multibook", &no_multibook, FALSE },
+ { "bookmark_exec", &no_bookmark_exec, FALSE },
+ { "option_save", &no_option_save, FALSE },
+ { "print", &no_print, CAN_ANONYMOUS_PRINT },
+ { "download", &no_download, FALSE },
+ { "disk_save", &no_disk_save, FALSE },
+#if defined(EXEC_LINKS) || defined(EXEC_SCRIPTS)
+ { "exec", &no_exec, LOCAL_EXECUTION_LINKS_ALWAYS_OFF_FOR_ANONYMOUS },
+#endif
+ { "lynxcgi", &no_lynxcgi, FALSE },
+ { "exec_frozen", &exec_frozen, FALSE },
+ { "goto", &no_goto, CAN_ANONYMOUS_GOTO },
+ { "jump", &no_jump, CAN_ANONYMOUS_JUMP },
+ { "file_url", &no_file_url, FALSE },
+#ifndef DISABLE_NEWS
+ { "news_post", &no_newspost, FALSE },
+ { "inside_news", &no_inside_news, CAN_ANONYMOUS_INSIDE_DOMAIN_READ_NEWS },
+ { "outside_news", &no_outside_news, CAN_ANONYMOUS_OUTSIDE_DOMAIN_READ_NEWS },
+#endif
+ { "mail", &no_mail, CAN_ANONYMOUS_MAIL },
+ { "dotfiles", &no_dotfiles, FALSE },
+ { "useragent", &no_useragent, FALSE },
+#ifdef SUPPORT_CHDIR
+ { "chdir", &no_chdir, FALSE },
+#endif
+#ifdef DIRED_SUPPORT
+ { "dired_support", &no_dired_support, FALSE },
+#ifdef OK_PERMIT
+ { "change_exec_perms", &no_change_exec_perms, FALSE },
+#endif /* OK_PERMIT */
+#endif /* DIRED_SUPPORT */
+#ifdef USE_EXTERNALS
+ { "externals", &no_externals, FALSE },
+#endif
+ { "lynxcfg_info", &no_lynxcfg_info, CAN_ANONYMOUS_VIEW_LYNXCFG_INFO },
+#ifndef NO_CONFIG_INFO
+ { "lynxcfg_xinfo", &no_lynxcfg_xinfo, CAN_ANONYMOUS_VIEW_LYNXCFG_EXTENDED_INFO },
+#ifdef HAVE_CONFIG_H
+ { "compileopts_info", &no_compileopts_info, CAN_ANONYMOUS_VIEW_COMPILEOPTS_INFO },
+#endif
+#endif
+ /* put "goto" restrictions on the end, since they are a refinement */
+#ifndef DISABLE_BIBP
+ { "goto_bibp", &no_goto_bibp, CAN_ANONYMOUS_GOTO_BIBP },
+#endif
+#ifdef HAVE_CONFIG_H
+#ifndef NO_CONFIG_INFO
+ { "goto_configinfo", &no_goto_configinfo, CAN_ANONYMOUS_GOTO_CONFIGINFO },
+#endif
+#endif
+ { "goto_cso", &no_goto_cso, CAN_ANONYMOUS_GOTO_CSO },
+ { "goto_file", &no_goto_file, CAN_ANONYMOUS_GOTO_FILE },
+#ifndef DISABLE_FINGER
+ { "goto_finger", &no_goto_finger, CAN_ANONYMOUS_GOTO_FINGER },
+#endif
+ { "goto_ftp", &no_goto_ftp, CAN_ANONYMOUS_GOTO_FTP },
+#ifndef DISABLE_GOPHER
+ { "goto_gopher", &no_goto_gopher, CAN_ANONYMOUS_GOTO_GOPHER },
+#endif
+ { "goto_http", &no_goto_http, CAN_ANONYMOUS_GOTO_HTTP },
+ { "goto_https", &no_goto_https, CAN_ANONYMOUS_GOTO_HTTPS },
+ { "goto_lynxcgi", &no_goto_lynxcgi, CAN_ANONYMOUS_GOTO_LYNXCGI },
+ { "goto_lynxexec", &no_goto_lynxexec, CAN_ANONYMOUS_GOTO_LYNXEXEC },
+ { "goto_lynxprog", &no_goto_lynxprog, CAN_ANONYMOUS_GOTO_LYNXPROG },
+ { "goto_mailto", &no_goto_mailto, CAN_ANONYMOUS_GOTO_MAILTO },
+#ifndef DISABLE_NEWS
+ { "goto_news", &no_goto_news, CAN_ANONYMOUS_GOTO_NEWS },
+ { "goto_nntp", &no_goto_nntp, CAN_ANONYMOUS_GOTO_NNTP },
+#endif
+ { "goto_rlogin", &no_goto_rlogin, CAN_ANONYMOUS_GOTO_RLOGIN },
+#ifndef DISABLE_NEWS
+ { "goto_snews", &no_goto_snews, CAN_ANONYMOUS_GOTO_SNEWS },
+#endif
+ { "goto_telnet", &no_goto_telnet, CAN_ANONYMOUS_GOTO_TELNET },
+ { "goto_tn3270", &no_goto_tn3270, CAN_ANONYMOUS_GOTO_TN3270 },
+ { "goto_wais", &no_goto_wais, CAN_ANONYMOUS_GOTO_WAIS },
+};
+/* *INDENT-ON* */
+
+/* This will make no difference between '-' and '_'. It does only in/equality
+ * compare. It assumes that p2 can't contain dashes, but p1 can. This
+ * function is also used (if macro OPTNAME_ALLOW_DASHES doesn't have value of
+ * zero) for compare of commandline options -VH
+ */
+BOOL strn_dash_equ(const char *p1,
+ const char *p2,
+ int len)
+{
+ while (len--) {
+ if (!*p2)
+ return 0; /* canonical name is shorter */
+ switch (*p1) {
+ case 0:
+ return 0;
+ case '-':
+ case '_':
+ if (*p2 != '_')
+ return 0;
+ else
+ break;
+ default:
+ if (*p1 != *p2)
+ return 0;
+ }
+ ++p1;
+ ++p2;
+ }
+ return 1;
+}
+
+/* Uncomment following lines to allow only exact string matching */
+/* #define RESTRICT_NM_ALLOW_DASHES 0 */
+
+#ifndef RESTRICT_NM_ALLOW_DASHES
+# define RESTRICT_NM_ALLOW_DASHES 1
+#endif
+
+#if RESTRICT_NM_ALLOW_DASHES
+# define RESTRICT_NM_EQU(a,b,len) strn_dash_equ(a,b,len)
+#else
+# define RESTRICT_NM_EQU(a,b,len) STRNEQ(a,b,len)
+#endif
+
+/*
+ * Returns the inx'th name from the restrictions table, or null if inx is
+ * out of range.
+ */
+const char *index_to_restriction(unsigned inx)
+{
+ if (inx < TABLESIZE(restrictions))
+ return restrictions[inx].name;
+ return NULL;
+}
+
+/*
+ * Returns the value TRUE/FALSE of a given restriction, or -1 if it is not
+ * one that we recognize.
+ */
+int find_restriction(const char *name,
+ int len)
+{
+ unsigned i;
+
+ if (len < 0)
+ len = (int) strlen(name);
+ for (i = 0; i < TABLESIZE(restrictions); i++) {
+ if (RESTRICT_NM_EQU(name, restrictions[i].name, len)) {
+ return (*restrictions[i].flag);
+ }
+ }
+ return -1;
+}
+
+void parse_restrictions(const char *s)
+{
+ const char *p;
+ const char *word;
+ unsigned i;
+ BOOLEAN found;
+
+ p = s;
+ while (*p) {
+ p = LYSkipCBlanks(p);
+ if (*p == '\0')
+ break;
+ word = p;
+ while (*p != ',' && *p != '\0')
+ p++;
+
+ found = FALSE;
+ if (RESTRICT_NM_EQU(word, "all", (int) (p - word))) {
+ found = TRUE;
+ for (i = N_SPECIAL_RESTRICT_OPTIONS;
+ i < TABLESIZE(restrictions);
+ i++)
+ *(restrictions[i].flag) = TRUE;
+ } else if (RESTRICT_NM_EQU(word, "default", (int) (p - word))) {
+ found = TRUE;
+ for (i = N_SPECIAL_RESTRICT_OPTIONS;
+ i < TABLESIZE(restrictions);
+ i++)
+ *(restrictions[i].flag) = (BOOLEAN) !restrictions[i].can;
+ } else {
+ for (i = 0; i < TABLESIZE(restrictions); i++) {
+ if (RESTRICT_NM_EQU(word, restrictions[i].name, (int) (p - word))) {
+ *(restrictions[i].flag) = TRUE;
+ found = TRUE;
+ break;
+ }
+ }
+ }
+ if (!found) {
+ printf("%s: %.*s\n", gettext("unknown restriction"),
+ (int) (p - word), word);
+ exit_immediately(EXIT_FAILURE);
+ }
+ if (*p)
+ p++;
+ }
+
+ /*
+ * If shell is restricted, set restrictions on related topics.
+ */
+ if (no_shell) {
+ no_goto_lynxexec = TRUE;
+ no_goto_lynxprog = TRUE;
+ no_goto_lynxcgi = TRUE;
+#ifdef EXEC_LINKS
+ local_exec_on_local_files = TRUE;
+#endif
+ }
+}
+
+void print_restrictions_to_fd(FILE *fp)
+{
+ unsigned i, count = 0;
+
+ for (i = 0; i < TABLESIZE(restrictions); i++) {
+ if (*(restrictions[i].flag) == TRUE) {
+ count++;
+ }
+ }
+ if (!count) {
+ fprintf(fp, gettext("No restrictions set.\n"));
+ return;
+ }
+ fprintf(fp, gettext("Restrictions set:\n"));
+ for (i = 0; i < TABLESIZE(restrictions); i++) {
+ if (*(restrictions[i].flag) == TRUE) {
+ /* if "goto" is restricted, don't bother tell about its
+ * refinements
+ */
+ if (StrNCmp(restrictions[i].name, "goto_", 5)
+ || !no_goto)
+ fprintf(fp, " %s\n", restrictions[i].name);
+ }
+ }
+}
+
+#ifdef VMS
+#include <jpidef.h>
+#include <maildef.h>
+#include <starlet.h>
+
+typedef struct _VMSMailItemList {
+ short buffer_length;
+ short item_code;
+ void *buffer_address;
+ long *return_length_address;
+} VMSMailItemList;
+
+void LYCheckMail(void)
+{
+ static BOOL firsttime = TRUE, failure = FALSE;
+ static char user[13], dir[252];
+ static long userlen = 0, dirlen;
+ static time_t lastcheck = 0;
+ time_t now;
+ static short new, lastcount;
+ long ucontext = 0, status;
+ short flags = MAIL$M_NEWMSG;
+ /* *INDENT-OFF* */
+ VMSMailItemList
+ null_list[] = {{0,0,0,0}},
+ jpi_list[] = {{sizeof(user) - 1,JPI$_USERNAME,(void *)user,&userlen},
+ {0,0,0,0}},
+ uilist[] = {{0,MAIL$_USER_USERNAME,0,0},
+ {0,0,0,0}},
+ uolist[] = {{sizeof(new),MAIL$_USER_NEW_MESSAGES,&new,0},
+ {sizeof(dir),MAIL$_USER_FULL_DIRECTORY,dir,&dirlen},
+ {0,0,0,0}};
+ /* *INDENT-ON* */
+
+ extern long mail$user_begin();
+ extern long mail$user_get_info();
+ extern long mail$user_end();
+
+ if (failure)
+ return;
+
+ if (firsttime) {
+ firsttime = FALSE;
+ /* Get the username. */
+ status = sys$getjpiw(0, 0, 0, jpi_list, 0, 0, 0);
+ if (!(status & 1)) {
+ failure = TRUE;
+ return;
+ }
+ user[userlen] = '\0';
+ LYTrimTrailing(user);
+ }
+
+ /* Minimum report interval is 60 sec. */
+ time(&now);
+ if (now - lastcheck < 60)
+ return;
+ lastcheck = now;
+
+ /* Get the current newmail count. */
+ status = mail$user_begin(&ucontext, null_list, null_list);
+ if (!(status & 1)) {
+ failure = TRUE;
+ return;
+ }
+ uilist[0].buffer_length = strlen(user);
+ uilist[0].buffer_address = user;
+ status = mail$user_get_info(&ucontext, uilist, uolist);
+ if (!(status & 1)) {
+ failure = TRUE;
+ return;
+ }
+
+ /* Should we report anything to the user? */
+ if (new > 0) {
+ if (lastcount == 0)
+ /* Have newmail at startup of Lynx. */
+ HTUserMsg(HAVE_UNREAD_MAIL_MSG);
+ else if (new > lastcount)
+ /* Have additional mail since last report. */
+ HTUserMsg(HAVE_NEW_MAIL_MSG);
+ lastcount = new;
+ return;
+ }
+ lastcount = new;
+
+ /* Clear the context */
+ mail$user_end((long *) &ucontext, null_list, null_list);
+ return;
+}
+#else
+void LYCheckMail(void)
+{
+ static BOOL firsttime = TRUE;
+ static char *mf;
+ static time_t lastcheck;
+ static time_t lasttime;
+ static long lastsize;
+ time_t now;
+ struct stat st;
+
+ if (firsttime) {
+ mf = LYGetEnv("MAIL");
+ firsttime = FALSE;
+ time(&lasttime);
+ }
+
+ if (mf == NULL)
+ return;
+
+ time(&now);
+ if (now - lastcheck < 60)
+ return;
+ lastcheck = now;
+
+ if ((stat(mf, &st) < 0)
+ || !S_ISREG(st.st_mode)) {
+ mf = NULL;
+ return;
+ }
+
+ if (st.st_size > 0) {
+ if (((lasttime != st.st_mtime) && (st.st_mtime > st.st_atime))
+ || ((lastsize != 0) && (st.st_size > lastsize)))
+ HTUserMsg(HAVE_NEW_MAIL_MSG);
+ else if (lastsize == 0)
+ HTUserMsg(HAVE_MAIL_MSG);
+ }
+ lastsize = (long) st.st_size;
+ lasttime = st.st_mtime;
+ return;
+}
+#endif /* VMS */
+
+/*
+ * This function ensures that an href will be
+ * converted to a fully resolved, absolute URL,
+ * with guessing of the host or expansions of
+ * lead tildes via LYConvertToURL() if needed,
+ * and tweaking/simplifying via HTParse(). It
+ * is used for LynxHome, startfile, homepage,
+ * and 'g'oto entries, after they have been
+ * passed to LYFillLocalFileURL(). - FM
+ * Such URLs have no `base' reference to which they
+ * could be resolved. LYLegitimizeHREF could not be used.
+ */
+void LYEnsureAbsoluteURL(char **href,
+ const char *name,
+ int fixit)
+{
+ char *temp = NULL;
+
+ if (isEmpty(*href))
+ return;
+
+ /*
+ * Check whether to fill in localhost. - FM
+ */
+ LYFillLocalFileURL(href, "file://localhost");
+
+ /*
+ * If it is not a URL then make it one.
+ */
+ if (!strcasecomp(*href, STR_NEWS_URL)) {
+ StrAllocCat(*href, "*");
+ } else if (!strcasecomp(*href, STR_SNEWS_URL)) {
+ StrAllocCat(*href, "/*");
+ }
+
+ if (!is_url(*href)) {
+ CTRACE((tfp, "%s%s'%s' is not a URL\n",
+ NonNull(name), (name ? " " : ""), *href));
+ LYConvertToURL(href, fixit);
+ }
+
+ temp = HTParse(*href, "", PARSE_ALL);
+ if (non_empty(temp))
+ StrAllocCopy(*href, temp);
+ FREE(temp);
+}
+
+static const char *default_scheme = "http://";
+
+static const char *guess_scheme(const char *url)
+{
+ const char *scheme = NULL;
+
+ if (LYGuessScheme && non_empty(url)) {
+ if (0 == strncasecomp(url, "www.", 4)) {
+ scheme = "http://";
+ } else if (0 == strncasecomp(url, "ftp.", 4)) {
+ scheme = "ftp://";
+ } else if (0 == strncasecomp(url, "gopher.", 7)) {
+ scheme = "gopher://";
+ } else if (0 == strncasecomp(url, "wais.", 5)) {
+ scheme = "wais://";
+ } else if (0 == strncasecomp(url, "cso.", 4) ||
+ 0 == strncasecomp(url, "ns.", 3) ||
+ 0 == strncasecomp(url, "ph.", 3)) {
+ scheme = "cso://";
+ } else if (0 == strncasecomp(url, "finger.", 7)) {
+ scheme = "finger://";
+ } else if (0 == strncasecomp(url, "news.", 5)) {
+ scheme = "news://";
+ } else if (0 == strncasecomp(url, "nntp.", 5)) {
+ scheme = "nntp://";
+ }
+ }
+ CTRACE((tfp, "guess_scheme(%s) -> '%s'\n", NonNull(url), NonNull(scheme)));
+ return scheme;
+}
+
+/*
+ * This function rewrites and reallocates a previously allocated string that
+ * begins with an Internet host name so that the string begins with its guess
+ * of the scheme based on the first field of the host name, or the default
+ * scheme if no guess was made.
+ */
+static void LYAddSchemeForURL(char **AllocatedString)
+{
+ if (non_empty(*AllocatedString)) {
+ char *Str = NULL;
+ const char *scheme = guess_scheme(*AllocatedString);
+
+ if (scheme == NULL)
+ scheme = default_scheme;
+
+ StrAllocCopy(Str, scheme);
+ StrAllocCat(Str, *AllocatedString);
+ StrAllocCopy(*AllocatedString, Str);
+
+ FREE(Str);
+ }
+}
+
+/*
+ * This function rewrites and reallocates a previously allocated string so that
+ * the first element is a confirmed Internet host, and returns TRUE, otherwise
+ * it does not modify the string and returns FALSE.
+ *
+ * It first tries the element as is, then, if the element does not end with a
+ * dot, it adds prefixes from the (comma separated) prefix list argument, and,
+ * if the element does not begin with a dot, suffixes from the (comma
+ * separated) suffix list arguments (e.g., www.host.com, then www.host,edu,
+ * then www.host.net, then www.host.org).
+ *
+ * The remaining path, if one is present, will be appended to the expanded
+ * host.
+ *
+ * It also takes into account whether a colon is in the element or suffix, and
+ * includes that and what follows as a port field for the expanded host field
+ * (e.g, wfbr:8002/dir/lynx should yield www.wfbr.edu:8002/dir/lynx).
+ */
+static BOOLEAN LYExpandHostForURL(char **AllocatedString,
+ char *prefix_list,
+ char *suffix_list)
+{
+ char *DomainPrefix = NULL;
+ const char *StartP, *EndP;
+ char *DomainSuffix = NULL;
+ const char *StartS, *EndS;
+ char *Str = NULL, *StrColon = NULL, *MsgStr = NULL;
+ char *Host = NULL, *HostColon = NULL, *host = NULL;
+ char *Path = NULL;
+ char *Fragment = NULL;
+ BOOLEAN GotHost = FALSE;
+ BOOLEAN Startup = (BOOL) (helpfilepath == NULL);
+
+ /*
+ * If it's a NULL or zero-length string, or if it begins with a slash or
+ * hash, don't continue pointlessly. - FM
+ */
+ if (isEmpty(*AllocatedString) ||
+ *AllocatedString[0] == '/' ||
+ *AllocatedString[0] == '#') {
+ return GotHost;
+ }
+
+ /*
+ * If it's a partial or relative path, don't continue pointlessly. - FM
+ */
+ if (!StrNCmp(*AllocatedString, "..", 2) ||
+ !StrNCmp(*AllocatedString, "./", 2)) {
+ return GotHost;
+ }
+
+ /*
+ * Make a clean copy of the string, and trim off the path if one is
+ * present, but save the information so we can restore the path after
+ * filling in the Host[:port] field. - FM
+ */
+ StrAllocCopy(Str, *AllocatedString);
+ if ((Path = StrChr(Str, '/')) != NULL) {
+ /*
+ * Have a path. Any fragment should already be included in Path. - FM
+ */
+ *Path = '\0';
+ } else {
+ /*
+ * No path, so check for a fragment and trim that, to be restored after
+ * filling in the Host[:port] field. - FM
+ */
+ Fragment = trimPoundSelector(Str);
+ }
+
+ /*
+ * If the potential host string has a colon, assume it begins a port field,
+ * and trim it off, but save the information so we can restore the port
+ * field after filling in the host field. - FM
+ */
+ if ((StrColon = strrchr(Str, ':')) != NULL &&
+ isdigit(UCH(StrColon[1])) && StrChr(StrColon, ']') == NULL) {
+ if (StrColon == Str) {
+ goto cleanup;
+ }
+ *StrColon = '\0';
+ }
+
+ /*
+ * Do a DNS test on the potential host field as presently trimmed. - FM
+ */
+ StrAllocCopy(host, Str);
+ strip_userid(host, FALSE);
+ HTUnEscape(host);
+ if (LYCursesON) {
+ StrAllocCopy(MsgStr, WWW_FIND_MESSAGE);
+ StrAllocCat(MsgStr, host);
+ StrAllocCat(MsgStr, FIRST_SEGMENT);
+ HTProgress(MsgStr);
+ } else if (Startup && !dump_output_immediately) {
+ fprintf(stdout, "%s '%s'%s\r\n", WWW_FIND_MESSAGE, host, FIRST_SEGMENT);
+ }
+#ifdef INET6
+ if (HTCheckAddrInfo(host, 80))
+#else
+ if (LYCheckHostByName(host))
+#endif /* INET6 */
+ {
+ /*
+ * Clear any residual interrupt. - FM
+ */
+ if (LYCursesON && HTCheckForInterrupt()) {
+ CTRACE((tfp,
+ "LYExpandHostForURL: Ignoring interrupt because '%s' resolved.\n",
+ host));
+ }
+
+ /*
+ * Return success. - FM
+ */
+ GotHost = TRUE;
+ goto cleanup;
+ } else if (LYCursesON && (lynx_nsl_status == HT_INTERRUPTED)) {
+ /*
+ * Give the user chance to interrupt lookup cycles. - KW & FM
+ */
+ CTRACE((tfp,
+ "LYExpandHostForURL: Interrupted while '%s' failed to resolve.\n",
+ host));
+
+ /*
+ * Return failure. - FM
+ */
+ goto cleanup;
+ }
+
+ /*
+ * Set the first prefix, making it a zero-length string if the list is NULL
+ * or if the potential host field ends with a dot. - FM
+ */
+ StartP = ((prefix_list && Str[strlen(Str) - 1] != '.')
+ ? prefix_list
+ : "");
+ /*
+ * If we have a prefix, but the allocated string is one of the common host
+ * prefixes, make our prefix a zero-length string. - FM
+ */
+ if (*StartP && *StartP != '.') {
+ if (guess_scheme(*AllocatedString) != NULL) {
+ StartP = "";
+ }
+ }
+ while ((*StartP) && (WHITE(*StartP) || *StartP == ',')) {
+ StartP++; /* Skip whitespace and separators */
+ }
+ EndP = StartP;
+ while (*EndP && !WHITE(*EndP) && *EndP != ',') {
+ EndP++; /* Find separator */
+ }
+ StrAllocCopy(DomainPrefix, StartP);
+ DomainPrefix[EndP - StartP] = '\0';
+
+ /*
+ * Test each prefix with each suffix. - FM
+ */
+ do {
+ /*
+ * Set the first suffix, making it a zero-length string if the list is
+ * NULL or if the potential host field begins with a dot. - FM
+ */
+ StartS = ((suffix_list && *Str != '.')
+ ? suffix_list
+ : "");
+ while ((*StartS) && (WHITE(*StartS) || *StartS == ',')) {
+ StartS++; /* Skip whitespace and separators */
+ }
+ EndS = StartS;
+ while (*EndS && !WHITE(*EndS) && *EndS != ',') {
+ EndS++; /* Find separator */
+ }
+ StrAllocCopy(DomainSuffix, StartS);
+ DomainSuffix[EndS - StartS] = '\0';
+
+ /*
+ * Create domain names and do DNS tests. - FM
+ */
+ do {
+ StrAllocCopy(Host, DomainPrefix);
+ StrAllocCat(Host, ((*Str == '.') ? (Str + 1) : Str));
+ if (Host[strlen(Host) - 1] == '.') {
+ Host[strlen(Host) - 1] = '\0';
+ }
+ StrAllocCat(Host, DomainSuffix);
+ if ((HostColon = strrchr(Host, ':')) != NULL &&
+ isdigit(UCH(HostColon[1]))) {
+ *HostColon = '\0';
+ }
+ StrAllocCopy(host, Host);
+ HTUnEscape(host);
+ if (LYCursesON) {
+ StrAllocCopy(MsgStr, WWW_FIND_MESSAGE);
+ StrAllocCat(MsgStr, host);
+ StrAllocCat(MsgStr, GUESSING_SEGMENT);
+ HTProgress(MsgStr);
+ } else if (Startup && !dump_output_immediately) {
+ fprintf(stdout, "%s '%s'%s\n", WWW_FIND_MESSAGE, host, GUESSING_SEGMENT);
+ }
+ GotHost = LYCheckHostByName(host);
+ if (HostColon != NULL) {
+ *HostColon = ':';
+ }
+ if (GotHost == FALSE) {
+ /*
+ * Give the user chance to interrupt lookup cycles. - KW
+ */
+ if (LYCursesON && (lynx_nsl_status == HT_INTERRUPTED)) {
+ CTRACE((tfp,
+ "LYExpandHostForURL: Interrupted while '%s' failed to resolve.\n",
+ host));
+ goto cleanup; /* We didn't find a valid name. */
+ }
+
+ /*
+ * Advance to the next suffix, or end of suffix list. - FM
+ */
+ StartS = ((*EndS == '\0') ? EndS : (EndS + 1));
+ while ((*StartS) && (WHITE(*StartS) || *StartS == ',')) {
+ StartS++; /* Skip whitespace and separators */
+ }
+ EndS = StartS;
+ while (*EndS && !WHITE(*EndS) && *EndS != ',') {
+ EndS++; /* Find separator */
+ }
+ LYStrNCpy(DomainSuffix, StartS, (EndS - StartS));
+ }
+ } while ((GotHost == FALSE) && (*DomainSuffix != '\0'));
+
+ if (GotHost == FALSE) {
+ /*
+ * Advance to the next prefix, or end of prefix list. - FM
+ */
+ StartP = ((*EndP == '\0') ? EndP : (EndP + 1));
+ while ((*StartP) && (WHITE(*StartP) || *StartP == ',')) {
+ StartP++; /* Skip whitespace and separators */
+ }
+ EndP = StartP;
+ while (*EndP && !WHITE(*EndP) && *EndP != ',') {
+ EndP++; /* Find separator */
+ }
+ LYStrNCpy(DomainPrefix, StartP, (EndP - StartP));
+ }
+ } while ((GotHost == FALSE) && (*DomainPrefix != '\0'));
+
+ /*
+ * If a test passed, restore the port field if we had one and there is no
+ * colon in the expanded host, and the path if we had one, and reallocate
+ * the original string with the expanded Host[:port] field included. - FM
+ */
+ if (GotHost) {
+ if (StrColon && StrChr(Host, ':') == NULL) {
+ *StrColon = ':';
+ StrAllocCat(Host, StrColon);
+ }
+ if (Path) {
+ *Path = '/';
+ StrAllocCat(Host, Path);
+ } else if (Fragment) {
+ StrAllocCat(Host, "/");
+ restorePoundSelector(Fragment);
+ StrAllocCat(Host, Fragment);
+ }
+ StrAllocCopy(*AllocatedString, Host);
+ }
+
+ /*
+ * Clear any residual interrupt. - FM
+ */
+ if (LYCursesON && HTCheckForInterrupt()) {
+ CTRACE((tfp,
+ "LYExpandHostForURL: Ignoring interrupt because '%s' %s.\n",
+ host,
+ (GotHost ? "resolved" : "timed out")));
+ }
+
+ /*
+ * Clean up and return the last test result. - FM
+ */
+ cleanup:
+ FREE(DomainPrefix);
+ FREE(DomainSuffix);
+ FREE(Str);
+ FREE(MsgStr);
+ FREE(Host);
+ FREE(host);
+ return GotHost;
+}
+/*
+ * Rewrite and reallocate a previously allocated string as a file URL if the
+ * string resolves to a file or directory on the local system, otherwise as an
+ * http URL. - FM
+ */
+void LYConvertToURL(char **AllocatedString,
+ int fixit)
+{
+ char *old_string = *AllocatedString;
+ char *temp = NULL;
+ char *cp = NULL;
+
+#ifndef VMS
+ struct stat st;
+#endif /* !VMS */
+
+ if (isEmpty(old_string))
+ return;
+
+#if defined(USE_DOS_DRIVES)
+ {
+ char *cp_url = *AllocatedString;
+
+ for (; *cp_url != '\0'; cp_url++)
+ if (*cp_url == '\\')
+ *cp_url = '/';
+ cp_url--;
+ if (LYIsDosDrive(*AllocatedString) && *cp_url == ':')
+ LYAddPathSep(AllocatedString);
+ }
+#endif /* USE_DOS_DRIVES */
+
+ *AllocatedString = NULL; /* so StrAllocCopy doesn't free it */
+ StrAllocCopy(*AllocatedString, "file://localhost");
+
+ if (*old_string != '/') {
+ char *fragment = NULL;
+
+#if defined(USE_DOS_DRIVES)
+ StrAllocCat(*AllocatedString, "/");
+#endif /* USE_DOS_DRIVES */
+#ifdef VMS
+ /*
+ * Not a SHELL pathspec. Get the full VMS spec and convert it.
+ */
+ char *cur_dir = NULL;
+ static char url_file[LY_MAXPATH], file_name[LY_MAXPATH], dir_name[LY_MAXPATH];
+ unsigned long context = 0;
+
+ $DESCRIPTOR(url_file_dsc, url_file);
+ $DESCRIPTOR(file_name_dsc, file_name);
+ if (LYIsTilde(*old_string)) {
+ /*
+ * On VMS, we'll accept '~' on the command line as Home_Dir(), and
+ * assume the rest of the path, if any, has SHELL syntax.
+ */
+ StrAllocCat(*AllocatedString, HTVMS_wwwName(Home_Dir()));
+ if ((cp = StrChr(old_string, '/')) != NULL) {
+ /*
+ * Append rest of path, if present, skipping "user" if "~user"
+ * was entered, simplifying, and eliminating any residual
+ * relative elements. - FM
+ */
+ StrAllocCopy(temp, cp);
+ LYTrimRelFromAbsPath(temp);
+ StrAllocCat(*AllocatedString, temp);
+ FREE(temp);
+ }
+ goto have_VMS_URL;
+ } else {
+ fragment = trimPoundSelector(old_string);
+ LYStrNCpy(url_file, old_string, sizeof(url_file) - 1);
+ }
+ url_file_dsc.dsc$w_length = (short) strlen(url_file);
+ if (1 & lib$find_file(&url_file_dsc, &file_name_dsc, &context,
+ 0, 0, 0, 0)) {
+ /*
+ * We found the file. Convert to a URL pathspec.
+ */
+ if ((cp = StrChr(file_name, ';')) != NULL) {
+ *cp = '\0';
+ }
+ LYLowerCase(file_name);
+ StrAllocCat(*AllocatedString, HTVMS_wwwName(file_name));
+ if ((cp = StrChr(old_string, ';')) != NULL) {
+ StrAllocCat(*AllocatedString, cp);
+ }
+ if (fragment != NULL) {
+ restorePoundSelector(fragment);
+ StrAllocCat(*AllocatedString, fragment);
+ fragment = NULL;
+ }
+ } else if ((NULL != getcwd(dir_name, sizeof(dir_name) - 1, 0)) &&
+ 0 == chdir(old_string)) {
+ /*
+ * Probably a directory. Try converting that.
+ */
+ StrAllocCopy(cur_dir, dir_name);
+ restorePoundSelector(fragment);
+ if (NULL != getcwd(dir_name, sizeof(dir_name) - 1, 0)) {
+ /*
+ * Yup, we got it!
+ */
+ LYLowerCase(dir_name);
+ StrAllocCat(*AllocatedString, dir_name);
+ if (fragment != NULL) {
+ StrAllocCat(*AllocatedString, fragment);
+ fragment = NULL;
+ }
+ } else {
+ /*
+ * Nope. Assume it's an http URL with the "http://" defaulted,
+ * if we can't rule out a bad VMS path.
+ */
+ fragment = NULL;
+ if (StrChr(old_string, '[') ||
+ ((cp = StrChr(old_string, ':')) != NULL &&
+ !isdigit(UCH(cp[1]))) ||
+ !LYExpandHostForURL(&old_string,
+ URLDomainPrefixes,
+ URLDomainSuffixes)) {
+ /*
+ * Probably a bad VMS path (but can't be sure). Use
+ * original pathspec for the error message that will
+ * result.
+ */
+ sprintf(url_file, "/%.*s", sizeof(url_file) - 2, old_string);
+ CTRACE((tfp,
+ "Can't find '%s' Will assume it's a bad path.\n",
+ old_string));
+ StrAllocCat(*AllocatedString, url_file);
+ } else {
+ LYAddSchemeForURL(&old_string);
+ StrAllocCopy(*AllocatedString, old_string);
+ }
+ }
+ } else {
+ /*
+ * Nothing found. Assume it's an http URL with the "http://"
+ * defaulted, if we can't rule out a bad VMS path.
+ */
+ restorePoundSelector(fragment);
+ fragment = NULL;
+
+ if (StrChr(old_string, '[') ||
+ ((cp = StrChr(old_string, ':')) != NULL &&
+ !isdigit(UCH(cp[1]))) ||
+ !LYExpandHostForURL(&old_string,
+ URLDomainPrefixes,
+ URLDomainSuffixes)) {
+ /*
+ * Probably a bad VMS path (but can't be sure). Use original
+ * pathspec for the error message that will result.
+ */
+ sprintf(url_file, "/%.*s", sizeof(url_file) - 2, old_string);
+ CTRACE((tfp, "Can't find '%s' Will assume it's a bad path.\n",
+ old_string));
+ StrAllocCat(*AllocatedString, url_file);
+ } else {
+ LYAddSchemeForURL(&old_string);
+ StrAllocCopy(*AllocatedString, old_string);
+ }
+ }
+ lib$find_file_end(&context);
+ FREE(cur_dir);
+ have_VMS_URL:
+ CTRACE((tfp, "Trying: '%s'\n", *AllocatedString));
+#else /* not VMS: */
+#if defined(USE_DOS_DRIVES)
+#ifdef _WINDOWS
+ if (*old_string == '.') {
+ char fullpath[MAX_PATH + 1];
+ char *filepart = NULL;
+ DWORD chk;
+
+ chk = GetFullPathNameA(old_string, MAX_PATH + 1,
+ fullpath, &filepart);
+ if (chk != 0) {
+ StrAllocCopy(temp, wwwName(fullpath));
+ StrAllocCat(*AllocatedString, temp);
+ FREE(temp);
+ CTRACE((tfp, "Converted '%s' to '%s'\n",
+ old_string, *AllocatedString));
+ } else {
+ StrAllocCat(*AllocatedString, old_string);
+ }
+ }
+#else
+ if (strlen(old_string) == 1 && *old_string == '.') {
+ /*
+ * They want .
+ */
+ char curdir[LY_MAXPATH];
+
+ StrAllocCopy(temp, wwwName(Current_Dir(curdir)));
+ StrAllocCat(*AllocatedString, temp);
+ FREE(temp);
+ CTRACE((tfp, "Converted '%s' to '%s'\n",
+ old_string, *AllocatedString));
+ }
+#endif
+ else
+#endif /* USE_DOS_DRIVES */
+ if (LYIsTilde(*old_string)) {
+ char *his_home = NULL;
+
+ StrAllocCopy(his_home, old_string);
+ LYTildeExpand(&his_home, FALSE);
+ StrAllocCat(*AllocatedString, his_home);
+ FREE(his_home);
+
+ CTRACE((tfp, "Converted '%s' to '%s'\n",
+ old_string, *AllocatedString));
+ } else {
+ /*
+ * Create a full path to the current default directory.
+ */
+ char curdir[LY_MAXPATH];
+ char *temp2 = NULL;
+ BOOL is_local = FALSE;
+
+ Current_Dir(curdir);
+ /*
+ * Concatenate and simplify, trimming any residual relative
+ * elements. - FM
+ */
+#if defined (USE_DOS_DRIVES)
+ if (old_string[1] != ':' && old_string[1] != '|') {
+ StrAllocCopy(temp, wwwName(curdir));
+ LYAddHtmlSep(&temp);
+ LYStrNCpy(curdir, temp, (sizeof(curdir) - 1));
+ StrAllocCat(temp, old_string);
+ } else {
+ curdir[0] = '\0';
+ /* 1998/01/13 (Tue) 12:24:33 */
+ if (old_string[1] == '|')
+ old_string[1] = ':';
+ StrAllocCopy(temp, old_string);
+
+ if (strlen(temp) == 2 && LYIsDosDrive(temp))
+ LYAddPathSep(&temp);
+ }
+#else
+ StrAllocCopy(temp, curdir);
+ StrAllocCat(temp, "/");
+ StrAllocCat(temp, old_string);
+#endif /* USE_DOS_DRIVES */
+ LYTrimRelFromAbsPath(temp);
+ CTRACE((tfp, "Converted '%s' to '%s'\n", old_string, temp));
+ if ((stat(temp, &st) > -1) ||
+ LYCanReadFile(temp)) {
+ /*
+ * It is a subdirectory or file on the local system.
+ */
+#if defined (USE_DOS_DRIVES)
+ /* Don't want to see DOS local paths like c: escaped */
+ /* especially when we really have file://localhost/ */
+ /* at the beginning. To avoid any confusion we allow */
+ /* escaping the path if URL specials % or # present. */
+ if (StrChr(temp, '#') == NULL && StrChr(temp, '%') == NULL)
+ StrAllocCopy(cp, temp);
+ else
+ cp = HTEscape(temp, URL_PATH);
+#else
+ cp = HTEscape(temp, URL_PATH);
+#endif /* USE_DOS_DRIVES */
+ StrAllocCat(*AllocatedString, cp);
+ FREE(cp);
+ CTRACE((tfp, "Converted '%s' to '%s'\n",
+ old_string, *AllocatedString));
+ is_local = TRUE;
+ } else {
+ char *cp2 = NULL;
+
+ StrAllocCopy(temp2, curdir);
+ LYAddPathSep(&temp2);
+ StrAllocCopy(cp, old_string);
+ fragment = trimPoundSelector(cp);
+ HTUnEscape(cp); /* unescape given path without fragment */
+ StrAllocCat(temp2, cp); /* append to current dir */
+ StrAllocCopy(cp2, temp2); /* keep a copy in cp2 */
+ LYTrimRelFromAbsPath(temp2);
+#ifdef WIN_EX /* 1998/07/31 (Fri) 09:09:03 */
+ HTUnEscape(temp2); /* for LFN */
+#endif
+
+ if (strcmp(temp2, temp) != 0 &&
+ ((stat(temp2, &st) > -1) ||
+ LYCanReadFile(temp2))) {
+ /*
+ * It is a subdirectory or file on the local system with
+ * escaped characters and/or a fragment to be appended to
+ * the URL. - FM
+ */
+
+ FREE(temp);
+ if (strcmp(cp2, temp2) == 0) {
+ /*
+ * LYTrimRelFromAbsPath did nothing, use old_string as
+ * given. - kw
+ */
+ temp = HTEscape(curdir, URL_PATH);
+ LYAddHtmlSep(&temp);
+ StrAllocCat(temp, old_string);
+ } else {
+ temp = HTEscape(temp2, URL_PATH);
+ if (fragment != NULL) {
+ restorePoundSelector(fragment);
+ StrAllocCat(temp, fragment);
+ }
+ }
+ StrAllocCat(*AllocatedString, temp);
+ CTRACE((tfp, "Converted '%s' to '%s'\n",
+ old_string, *AllocatedString));
+ is_local = TRUE;
+
+ } else if (StrChr(curdir, '#') != NULL ||
+ StrChr(curdir, '%') != NULL) {
+ /*
+ * If PWD has some unusual characters, construct a filename
+ * in temp where those are escaped. This is mostly to
+ * prevent this function from returning with some weird URL
+ * if the LYExpandHostForURL tests further down fail. - kw
+ */
+ FREE(temp);
+ if (strcmp(cp2, temp2) == 0) {
+ /*
+ * LYTrimRelFromAbsPath did nothing, use old_string as
+ * given. - kw
+ */
+ temp = HTEscape(curdir, URL_PATH);
+ LYAddHtmlSep(&temp);
+ StrAllocCat(temp, old_string);
+ } else {
+ temp = HTEscape(temp2, URL_PATH);
+ if (fragment != NULL) {
+ restorePoundSelector(fragment);
+ StrAllocCat(temp, fragment);
+ }
+ }
+ }
+ FREE(cp);
+ FREE(cp2);
+ }
+ if (is_local == FALSE) {
+ /*
+ * It's not an accessible subdirectory or file on the local
+ * system, so assume it's a URL request and guess the scheme
+ * with "http://" as the default.
+ */
+ CTRACE((tfp, "Can't stat() or fopen() '%s'\n",
+ temp2 ? temp2 : temp));
+#ifdef WIN_EX /* 1998/01/13 (Tue) 09:07:37 */
+ {
+ const char *p, *q;
+ char buff[LY_MAXPATH + 128];
+
+ p = Home_Dir();
+ q = temp2 ? temp2 : temp;
+
+ if (strlen(q) == 3 && LYIsDosDrive(q)) {
+ sprintf(buff,
+ "'%s' not exist, Goto LynxHome '%s'.", q, p);
+ _statusline(buff);
+ LYSleepAlert();
+ FREE(temp);
+ StrAllocCat(*AllocatedString, p);
+ goto Retry;
+ }
+ }
+#endif
+ if (LYExpandHostForURL(&old_string,
+ URLDomainPrefixes,
+ URLDomainSuffixes)) {
+ LYAddSchemeForURL(&old_string);
+ StrAllocCopy(*AllocatedString, old_string);
+ } else if (fixit) {
+ StrAllocCopy(*AllocatedString, old_string);
+ } else {
+ /* Return file URL for the file that does not exist */
+ StrAllocCat(*AllocatedString, temp);
+ }
+#ifdef WIN_EX
+ Retry:
+#endif
+ CTRACE((tfp, "Trying: '%s'\n", *AllocatedString));
+ }
+ FREE(temp);
+ FREE(temp2);
+ }
+#endif /* VMS */
+ } else {
+ /*
+ * Path begins with a slash. Simplify and use it.
+ */
+ if (old_string[1] == '\0') {
+ /*
+ * Request for root. Respect it on Unix, but on VMS we treat that
+ * as a listing of the login directory. - FM
+ */
+#ifdef VMS
+ StrAllocCat(*AllocatedString, HTVMS_wwwName(Home_Dir()));
+#else
+ StrAllocCat(*AllocatedString, "/");
+ } else if ((stat(old_string, &st) > -1) ||
+ LYCanReadFile(old_string)) {
+ /*
+ * It is an absolute directory or file on the local system. - KW
+ */
+ StrAllocCopy(temp, old_string);
+ LYTrimRelFromAbsPath(temp);
+ CTRACE((tfp, "Converted '%s' to '%s'\n", old_string, temp));
+ cp = HTEscape(temp, URL_PATH);
+ StrAllocCat(*AllocatedString, cp);
+ FREE(cp);
+ FREE(temp);
+ CTRACE((tfp, "Converted '%s' to '%s'\n",
+ old_string, *AllocatedString));
+#endif /* VMS */
+ } else if (LYIsTilde(old_string[1])) {
+ /*
+ * Has a Home_Dir() reference. Handle it as if there weren't a
+ * lead slash. - FM
+ */
+ StrAllocCat(*AllocatedString, wwwName(Home_Dir()));
+ if ((cp = StrChr((old_string + 1), '/')) != NULL) {
+ /*
+ * Append rest of path, if present, skipping "user" if "~user"
+ * was entered, simplifying, and eliminating any residual
+ * relative elements. - FM
+ */
+ StrAllocCopy(temp, cp);
+ LYTrimRelFromAbsPath(temp);
+ StrAllocCat(*AllocatedString, temp);
+ FREE(temp);
+ }
+ } else {
+ /*
+ * Normal absolute path. Simplify, trim any residual relative
+ * elements, and append it. - FM
+ */
+ StrAllocCopy(temp, old_string);
+ LYTrimRelFromAbsPath(temp);
+ StrAllocCat(*AllocatedString, temp);
+ FREE(temp);
+ }
+ CTRACE((tfp, "Converted '%s' to '%s'\n",
+ old_string, *AllocatedString));
+ }
+ FREE(old_string);
+ /* Pause so we can read the messages before invoking curses */
+ CTRACE_SLEEP(AlertSecs);
+}
+
+#if defined(_WINDOWS) /* 1998/06/23 (Tue) 16:45:20 */
+
+int win32_check_interrupt(void)
+{
+ int c;
+
+ if (kbhit()) {
+ c = LYgetch();
+ /** Keyboard 'Z' or 'z', or Control-G or Control-C **/
+ if (LYCharIsINTERRUPT(c) || c == 0x1b) {
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+#if (!defined(__MINGW32__) && !defined(sleep)) || (defined(__MINGW32__) && !defined(HAVE_SLEEP))
+void sleep(unsigned sec)
+{
+ unsigned int i, j;
+
+ for (j = 0; j < sec; j++) {
+ for (i = 0; i < 10; i++) {
+ Sleep(100);
+ if (kbhit()) {
+ (void) LYgetch();
+ return;
+ }
+ }
+ }
+}
+#endif /* !__MINGW32__ */
+#endif /* _WINDOWS */
+/*
+ * This function expects an absolute Unix or VMS SHELL path spec as an
+ * allocated string, simplifies it, and trims out any residual relative
+ * elements. It also checks whether the path had a terminal slash, and if it
+ * didn't, makes sure that the simplified path doesn't either. If it's a
+ * directory, our convention is to exclude "Up to parent" links when a terminal
+ * slash is present. - FM
+ */
+void LYTrimRelFromAbsPath(char *path)
+{
+ char *cp;
+ int i;
+ BOOL TerminalSlash;
+
+ /*
+ * Make sure we have a pointer to an absolute path. - FM
+ */
+ if (path == NULL || !LYIsPathSep(*path))
+ return;
+
+ /*
+ * Check whether the path has a terminal slash. - FM
+ */
+ TerminalSlash = (BOOL) (LYIsPathSep(path[(strlen(path) - 1)]));
+
+ /*
+ * Simplify the path and then do any necessary trimming. - FM
+ */
+ HTSimplify(path, TRUE);
+ cp = path;
+ while (cp[1] == '.') {
+ if (cp[2] == '\0') {
+ /*
+ * Eliminate trailing dot. - FM
+ */
+ cp[1] = '\0';
+ } else if (LYIsPathSep(cp[2])) {
+ /*
+ * Skip over the "/." of a "/./". - FM
+ */
+ cp += 2;
+ } else if (cp[2] == '.' && cp[3] == '\0') {
+ /*
+ * Eliminate trailing dotdot. - FM
+ */
+ cp[1] = '\0';
+ } else if (cp[2] == '.' && cp[3] == '/') {
+ /*
+ * Skip over the "/.." of a "/../". - FM
+ */
+ cp += 3;
+ } else {
+ /*
+ * Done trimming. - FM
+ */
+ break;
+ }
+ }
+
+ /*
+ * Load any shifts into path, and eliminate any terminal slash created by
+ * HTSimplify() or our walk, but not present originally. - FM
+ */
+ if (cp > path) {
+ for (i = 0; cp[i] != '\0'; i++)
+ path[i] = cp[i];
+ path[i] = '\0';
+ }
+ if (TerminalSlash == FALSE) {
+ LYTrimPathSep(path);
+ }
+}
+
+/*
+ * Example Client-Side Include interface.
+ *
+ * This is called from SGML.c and simply returns markup for reporting the URL
+ * of the document being loaded if a comment begins with "<!--#lynxCSI". The
+ * markup will be included as if it were in the document. Move this function
+ * to a separate module for doing this kind of thing seriously, someday. - FM
+ */
+void LYDoCSI(char *url,
+ const char *comment,
+ char **csi)
+{
+ const char *cp = comment;
+
+ if (cp == NULL)
+ return;
+
+ if (StrNCmp(cp, "!--#", 4))
+ return;
+
+ cp += 4;
+ if (!strncasecomp(cp, "lynxCSI", 7)) {
+ StrAllocCat(*csi, "\n<p align=\"center\">URL: ");
+ StrAllocCat(*csi, url);
+ StrAllocCat(*csi, "</p>\n\n");
+ }
+
+ return;
+}
+
+#ifdef VMS
+/*
+ * Define_VMSLogical -- Fote Macrides 04-Apr-1995
+ * Define VMS logicals in the process table.
+ */
+void Define_VMSLogical(char *LogicalName,
+ char *LogicalValue)
+{
+ $DESCRIPTOR(lname, "");
+ $DESCRIPTOR(lvalue, "");
+ $DESCRIPTOR(ltable, "LNM$PROCESS");
+
+ if (isEmpty(LogicalName))
+ return;
+
+ lname.dsc$w_length = strlen(LogicalName);
+ lname.dsc$a_pointer = LogicalName;
+
+ if (isEmpty(LogicalValue)) {
+ lib$delete_logical(&lname, &ltable);
+ return;
+ }
+
+ lvalue.dsc$w_length = strlen(LogicalValue);
+ lvalue.dsc$a_pointer = LogicalValue;
+ lib$set_logical(&lname, &lvalue, &ltable, 0, 0);
+ return;
+}
+#endif /* VMS */
+
+#ifdef LY_FIND_LEAKS
+static void LYHomeDir_free(void)
+{
+ FREE(HomeDir);
+}
+#endif /* LY_FIND_LEAKS */
+
+char *Current_Dir(char *pathname)
+{
+ char *result;
+
+#ifdef HAVE_GETCWD
+ result = getcwd(pathname, (size_t) LY_MAXPATH);
+#else
+ result = getwd(pathname);
+#endif /* NO_GETCWD */
+ if (result == 0)
+ strcpy(pathname, ".");
+ return pathname;
+}
+
+/*
+ * Verify that the given path refers to an existing directory, returning the
+ * string if the directory exists. If not, return null.
+ */
+static char *CheckDir(char *path)
+{
+ struct stat stat_info;
+
+ if (!LYisAbsPath(path)
+ || (HTStat(path, &stat_info) < 0
+ || !S_ISDIR(stat_info.st_mode))) {
+ path = NULL;
+ }
+ CTRACE((tfp, "CheckDir(%s) %s\n", NonNull(path), path ? "OK" : "ERR"));
+ return path;
+}
+
+/*
+ * Lookup various possibilities for $HOME, and check that the directory exists.
+ */
+static char *HomeEnv(void)
+{
+ char *result = CheckDir(LYGetEnv("HOME"));
+
+#if defined (USE_DOS_DRIVES) && defined(_WIN32)
+ if (result == 0) {
+ char *head;
+ char *leaf;
+ static char *temp = NULL;
+
+ result = w32_get_shell_folder("Personal");
+ if (result == 0) {
+ /* Windows Vista/7 */
+ if ((head = LYGetEnv("USERPROFILE")) != 0) {
+ HTSprintf0(&temp, "%s%sDocuments", head, FILE_SEPARATOR);
+ result = CheckDir(temp);
+ if (result == 0) {
+ /* Windows 2000 */
+ HTSprintf0(&temp, "%s%sMy Documents", head, FILE_SEPARATOR);
+ result = CheckDir(temp);
+ }
+ }
+ }
+ /* NT4 */
+ if (result == 0) {
+ if ((head = LYGetEnv("HOMEDRIVE")) != 0) {
+ if ((leaf = LYGetEnv("HOMEPATH")) != 0) {
+ HTSprintf0(&temp, "%s%s%s", head, FILE_SEPARATOR, leaf);
+ result = CheckDir(temp);
+ }
+ }
+ }
+ /* General M$ */
+#ifdef USE_PROGRAM_DIR
+ if (result == 0)
+ result = CheckDir(program_dir);
+#endif
+ if (result == 0)
+ result = CheckDir(LYGetEnv("TEMP"));
+ if (result == 0)
+ result = CheckDir(LYGetEnv("TMP"));
+ if (result == 0) {
+ if ((head = LYGetEnv("SystemDrive")) != 0) {
+ HTSprintf0(&temp, "%s%s", head, FILE_SEPARATOR);
+ result = CheckDir(temp);
+ }
+ }
+ if (result == 0)
+ result = CheckDir("C:" FILE_SEPARATOR);
+ }
+#endif
+
+ return result;
+}
+
+const char *Home_Dir(void)
+{
+ static const char *homedir = NULL;
+ char *cp = NULL;
+
+ if (homedir == NULL) {
+ if ((cp = HomeEnv()) == NULL) {
+#ifdef VMS
+ if ((cp = LYGetEnv("SYS$LOGIN")) == NULL
+ && (cp = LYGetEnv("SYS$SCRATCH")) == NULL) {
+ cp = "sys$scratch:";
+ }
+ StrAllocCopy(HomeDir, cp);
+#else
+#ifdef UNIX
+#ifdef HAVE_UTMP
+ /*
+ * One could use getlogin() and getpwnam() here instead.
+ */
+ struct passwd *pw = getpwuid(geteuid());
+
+ if (pw && pw->pw_dir) {
+ StrAllocCopy(HomeDir, pw->pw_dir);
+ } else
+#endif
+ {
+ /*
+ * Use /tmp; it should be writable.
+ */
+ StrAllocCopy(HomeDir, "/tmp");
+ }
+#endif
+#endif /* VMS */
+ } else {
+ StrAllocCopy(HomeDir, cp);
+ }
+ homedir = (const char *) HomeDir;
+#ifdef LY_FIND_LEAKS
+ atexit(LYHomeDir_free);
+#endif
+ }
+ if (homedir == NULL) {
+ printf("%s\n", gettext("Cannot find HOME directory"));
+ exit_immediately(EXIT_FAILURE);
+ }
+ return homedir;
+}
+
+/*
+ * Return a pointer to the final leaf of the given pathname, If no pathname
+ * separators are found, returns the original pathname. The leaf may be
+ * empty.
+ */
+char *LYPathLeaf(char *pathname)
+{
+ char *leaf;
+
+#ifdef UNIX
+ if ((leaf = strrchr(pathname, '/')) != 0) {
+ leaf++;
+ }
+#else
+#ifdef VMS
+ if ((leaf = strrchr(pathname, ']')) == 0)
+ leaf = strrchr(pathname, ':');
+ if (leaf != 0)
+ leaf++;
+#else
+ int n;
+
+ for (leaf = 0, n = (int) strlen(pathname) - 1; n >= 0; n--) {
+ if (StrChr("\\/:", pathname[n]) != 0) {
+ leaf = pathname + n + 1;
+ break;
+ }
+ }
+#endif
+#endif
+ return (leaf != 0) ? leaf : pathname;
+}
+
+/*
+ * This function checks the acceptability of file paths that are intended to be
+ * off the home directory. The file path should be passed in fbuffer, together
+ * with the size of the buffer. The function simplifies the file path, and if
+ * it is acceptable, loads it into fbuffer and returns TRUE. Otherwise, it
+ * does not modify fbuffer and returns FALSE. If a subdirectory is present and
+ * the path does not begin with "./", that is prefixed to make the situation
+ * clear. - FM
+ */
+BOOLEAN LYPathOffHomeOK(char *fbuffer,
+ size_t fbuffer_size)
+{
+ char *file = NULL;
+ char *cp, *cp1;
+
+ /*
+ * Make sure we have an fbuffer and a string in it. - FM
+ */
+ if (fbuffer_size < 2 || isEmpty(fbuffer)) {
+ return (FALSE);
+ }
+ StrAllocCopy(file, fbuffer);
+ cp = file;
+
+ /*
+ * Check for an inappropriate reference to the home directory, and correct
+ * it if we can. - FM
+ */
+#ifdef VMS
+ if (!strncasecomp(cp, "sys$login", 9)) {
+ if (*(cp + 9) == '\0') {
+ /*
+ * Reject "sys$login". - FM
+ */
+ FREE(file);
+ return (FALSE);
+ }
+ if (*(cp + 9) == ':') {
+ cp += 10;
+ if (*cp == '\0') {
+ /*
+ * Reject "sys$login:". Otherwise, we have converted
+ * "sys$login:file" to "file", or have left a strange path for
+ * VMS as it was originally. - FM
+ */
+ FREE(file);
+ return (FALSE);
+ }
+ }
+ }
+#endif /* VMS */
+ if (LYIsTilde(cp[0])) {
+ if (LYIsPathSep(cp[1])) {
+ if (cp[2] != '\0') {
+ if (StrChr((cp + 2), '/') != NULL) {
+ /*
+ * Convert "~/subdir(s)/file" to "./subdir(s)/file". - FM
+ */
+ *cp = '.';
+ } else {
+ /*
+ * Convert "~/file" to "file". - FM
+ */
+ cp += 2;
+ }
+ } else {
+ /*
+ * Reject "~/". - FM
+ */
+ FREE(file);
+ return (FALSE);
+ }
+ } else if ((*(cp + 1) != '\0') &&
+ (cp1 = StrChr((cp + 1), '/')) != NULL) {
+ cp = (cp1 - 1);
+ if (*(cp + 2) != '\0') {
+ if (StrChr((cp + 2), '/') != NULL) {
+ /*
+ * Convert "~user/subdir(s)/file" to "./subdir(s)/file".
+ * If user is someone else, we covered a spoof. Otherwise,
+ * we simplified. - FM
+ */
+ *cp = '.';
+ } else {
+ /*
+ * Convert "~user/file" to "file". - FM
+ */
+ cp += 2;
+ }
+ } else {
+ /*
+ * Reject "~user/". - FM
+ */
+ FREE(file);
+ return (FALSE);
+ }
+ } else {
+ /*
+ * Reject "~user". - FM
+ */
+ FREE(file);
+ return (FALSE);
+ }
+ }
+#ifdef VMS
+ /*
+ * Check for VMS path specs, and reject if still present. - FM
+ */
+ if (StrChr(cp, ':') != NULL || StrChr(cp, ']') != NULL) {
+ FREE(file);
+ return (FALSE);
+ }
+#endif /* VMS */
+
+ /*
+ * Check for a URL or absolute path, and reject if present. - FM
+ */
+ if (is_url(cp) || LYIsPathSep(*cp)) {
+ FREE(file);
+ return (FALSE);
+ }
+
+ /*
+ * Simplify it. - FM
+ */
+ HTSimplify(cp, FALSE);
+
+ /*
+ * Check if it has a pointless "./". - FM
+ */
+ if (!StrNCmp(cp, "./", 2)) {
+ if (StrChr((cp + 2), '/') == NULL) {
+ cp += 2;
+ }
+ }
+
+ /*
+ * Check for spoofing. - FM
+ */
+ if (*cp == '\0'
+ || LYIsPathSep(*cp)
+ || LYIsPathSep(cp[(strlen(cp) - 1)])
+ || strstr(cp, "..") != NULL
+ || !strcmp(cp, ".")) {
+ FREE(file);
+ return (FALSE);
+ }
+
+ /*
+ * Load what we have at this point into fbuffer, trimming if too long, and
+ * claim it's OK. - FM
+ */
+ if (fbuffer_size > 3 && StrNCmp(cp, "./", 2) && StrChr(cp, '/')) {
+ /*
+ * We have a subdirectory and no lead "./", so prefix it to make the
+ * situation clear. - FM
+ */
+ strcpy(fbuffer, "./");
+ if (strlen(cp) > (fbuffer_size - 3))
+ cp[(fbuffer_size - 3)] = '\0';
+ strcat(fbuffer, cp);
+ } else {
+ if (strlen(cp) > (fbuffer_size - 1))
+ cp[(fbuffer_size - 1)] = '\0';
+ strcpy(fbuffer, cp);
+ }
+ FREE(file);
+ return (TRUE);
+}
+
+/*
+ * Search for a leading tilde, optionally embedded. If found, return a pointer
+ * to the tilde. If not found, return the original parameter.
+ */
+static char *FindLeadingTilde(char *pathname, int embedded)
+{
+ char *result = pathname;
+
+ if (pathname != NULL) {
+ if (embedded) {
+ while (pathname[0] != '\0') {
+ if (LYIsPathSep(pathname[0])) {
+ if (LYIsTilde(pathname[1])) {
+ ++pathname;
+ break;
+ }
+ }
+ ++pathname;
+ }
+ }
+ if (LYIsTilde(*pathname))
+ result = pathname;
+ }
+ return result;
+}
+
+/*
+ * Convert a non-absolute path to one which is off the home directory. Expand
+ * tildes as a side-effect. Return a pointer to the converted result.
+ */
+char *LYAbsOrHomePath(char **fname)
+{
+ if (*fname && !LYisAbsPath(*fname)) {
+ if (LYIsTilde((*fname)[0])) {
+ LYTildeExpand(fname, FALSE);
+ } else {
+ char temp[LY_MAXPATH];
+
+ LYAddPathToHome(temp, sizeof(temp), *fname);
+ StrAllocCopy(*fname, temp);
+ }
+ }
+ return *fname;
+}
+
+/*
+ * Expand a "leading" tilde into the user's home directory in WWW format. If
+ * "embedded" is true, allow that "leading" tilde to follow a path separator.
+ */
+char *LYTildeExpand(char **pathname,
+ int embedded)
+{
+ char *temp = FindLeadingTilde(*pathname, embedded);
+
+ if (LYIsTilde(temp[0])) {
+
+ CTRACE((tfp, "LYTildeExpand %s\n", *pathname));
+ if (LYIsPathSep(temp[1])) {
+ char *first = NULL;
+ char *second = NULL;
+
+ StrAllocCopy(first, *pathname);
+ first[temp - *pathname] = '\0';
+
+ StrAllocCopy(second, temp + 2);
+
+ StrAllocCopy(*pathname, first);
+ StrAllocCat(*pathname, wwwName(Home_Dir()));
+ LYAddPathSep(pathname);
+ StrAllocCat(*pathname, second);
+
+ FREE(first);
+ FREE(second);
+ } else if (temp[1] == '\0') {
+ StrAllocCopy(*pathname, wwwName(Home_Dir()));
+#ifndef NOUSERS
+ } else {
+ char *save;
+ char saved = '\0';
+ struct passwd *pw;
+
+ for (save = temp; *save != '\0'; ++save) {
+ if (LYIsPathSep(*save)) {
+ saved = *save;
+ *save = '\0';
+ break;
+ }
+ }
+ pw = getpwnam(temp + 1);
+ *save = saved;
+ if (pw != 0 && non_empty(pw->pw_dir)) {
+ temp = NULL;
+ StrAllocCopy(temp, save);
+ StrAllocCopy(*pathname, pw->pw_dir);
+ StrAllocCat(*pathname, temp);
+ FREE(temp);
+ }
+#endif
+ }
+ CTRACE((tfp, "expanded path %s\n", *pathname));
+ }
+ return *pathname;
+}
+
+/*
+ * This function appends fname to the home path and returns the full path and
+ * filename. The fname string can be just a filename (e.g.,
+ * "lynx_bookmarks.html"), or include a subdirectory off the home directory, in
+ * which case fname should begin with "./" (e.g., ./BM/lynx_bookmarks.html) Use
+ * LYPathOffHomeOK() to check and/or fix up fname before calling this function.
+ * On VMS, the resultant full path and filename are converted to VMS syntax. -
+ * FM
+ */
+void LYAddPathToHome(char *fbuffer,
+ size_t fbuffer_size,
+ const char *fname)
+{
+ char *home = NULL;
+ const char *file = fname;
+ int len;
+
+ /*
+ * Make sure we have a buffer. - FM
+ */
+ if (!fbuffer)
+ return;
+ if (fbuffer_size < 2) {
+ fbuffer[0] = '\0';
+ return;
+ }
+ fbuffer[(fbuffer_size - 1)] = '\0';
+
+ /*
+ * Make sure we have a file name. - FM
+ */
+ if (!file)
+ file = "";
+
+ /*
+ * Set up home string and length. - FM
+ */
+ StrAllocCopy(home, Home_Dir());
+
+#ifdef VMS
+#define NO_HOMEPATH "Error:"
+#else
+#define NO_HOMEPATH "/error"
+#endif /* VMS */
+ if (!non_empty(home))
+ /*
+ * Home_Dir() has a bug if this ever happens. - FM
+ */
+ StrAllocCopy(home, NO_HOMEPATH);
+
+ len = (int) fbuffer_size - ((int) strlen(home) + 1);
+ if (len <= 0) {
+ /*
+ * Buffer is smaller than or only big enough for the home path. Load
+ * what fits of the home path and return. This will fail, but we need
+ * something in the buffer. - FM
+ */
+ LYStrNCpy(fbuffer, home, (fbuffer_size - 1));
+ FREE(home);
+ return;
+ }
+#ifdef VMS
+ /*
+ * Check whether we have a subdirectory path or just a filename. - FM
+ */
+ if (!StrNCmp(file, "./", 2)) {
+ /*
+ * We have a subdirectory path. - FM
+ */
+ if (home[strlen(home) - 1] == ']') {
+ /*
+ * We got the home directory, so convert it to SHELL syntax and
+ * append subdirectory path, then convert that to VMS syntax. - FM
+ */
+ char *temp = NULL;
+
+ HTSprintf0(&temp, "%s%s", HTVMS_wwwName(home), (file + 1));
+ sprintf(fbuffer, "%.*s",
+ (fbuffer_size - 1), HTVMS_name("", temp));
+ FREE(temp);
+ } else {
+ /*
+ * This will fail, but we need something in the buffer. - FM
+ */
+ sprintf(fbuffer, "%s%.*s", home, len, file);
+ }
+ } else {
+ /*
+ * We have a file in the home directory. - FM
+ */
+ sprintf(fbuffer, "%s%.*s", home, len, file);
+ }
+#else
+ /*
+ * Check whether we have a subdirectory path or just a filename. - FM
+ */
+ sprintf(fbuffer, "%s/%.*s", home, len,
+ (StrNCmp(file, "./", 2) ? file : (file + 2)));
+#endif /* VMS */
+ FREE(home);
+}
+
+/*
+ * Given a filename, concatenate it to the save-space pathname, unless it is
+ * an absolute pathname. If there is no save-space defined, use the home
+ * directory. Return a new string with the result.
+ */
+char *LYAddPathToSave(char *fname)
+{
+ char *result = NULL;
+
+ if (LYisAbsPath(fname)) {
+ StrAllocCopy(result, fname);
+ } else {
+ if (non_empty(lynx_save_space)) {
+ StrAllocCopy(result, lynx_save_space);
+ } else {
+ char temp[LY_MAXPATH];
+
+ LYAddPathToHome(temp, sizeof(temp), fname);
+ StrAllocCopy(result, temp);
+ }
+ }
+ return result;
+}
+
+#if !defined(HAVE_PUTENV) && !defined(_WINDOWS)
+/*
+ * No putenv on the NeXT so we use this code instead!
+ */
+
+/* Copyright (C) 1991 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#if defined(STDC_HEADERS) || defined(USG)
+#include <string.h>
+#else /* Not (STDC_HEADERS or USG): */
+#include <strings.h>
+#endif /* STDC_HEADERS or USG */
+
+#ifndef NULL
+#define NULL 0
+#endif /* !NULL */
+
+extern char **environ;
+
+/*
+ * Put STRING, which is of the form "NAME=VALUE", in the environment.
+ */
+int putenv(const char *string)
+{
+ char *name_end = StrChr(string, '=');
+ register size_t size;
+ register char **ep;
+
+ if (name_end == NULL) {
+ /* Remove the variable from the environment. */
+ size = strlen(string);
+ for (ep = environ; *ep != NULL; ++ep)
+ if (!StrNCmp(*ep, string, size) && (*ep)[size] == '=') {
+ while (ep[1] != NULL) {
+ ep[0] = ep[1];
+ ++ep;
+ }
+ *ep = NULL;
+ return 0;
+ }
+ }
+
+ size = 0;
+ for (ep = environ; *ep != NULL; ++ep)
+ if (!StrNCmp(*ep, string, name_end - string) &&
+ (*ep)[name_end - string] == '=')
+ break;
+ else
+ ++size;
+
+ if (*ep == NULL) {
+ static char **last_environ = NULL;
+ char **new_environ = (char **) malloc((size + 2) * sizeof(char *));
+
+ if (new_environ == NULL)
+ return -1;
+ (void) memcpy((char *) new_environ, (char *) environ, size * sizeof(char *));
+
+ new_environ[size] = (char *) string;
+ new_environ[size + 1] = NULL;
+ if (last_environ != NULL)
+ FREE(last_environ);
+ last_environ = new_environ;
+ environ = new_environ;
+ } else
+ *ep = (char *) string;
+
+ return 0;
+}
+#endif /* !HAVE_PUTENV */
+
+#ifdef NEED_REMOVE
+int remove(char *name)
+{
+ return unlink(name);
+}
+#endif
+
+#if defined(MULTI_USER_UNIX)
+
+#if defined(HAVE_LSTAT) && defined(S_IFLNK)
+/*
+ * If IsOurFile() is checking a symbolic link, ensure that the target
+ * points to the user's file as well.
+ */
+static BOOL IsOurSymlink(const char *name)
+{
+ BOOL result = FALSE;
+ size_t size = LY_MAXPATH;
+ size_t used;
+ char *buffer = typeMallocn(char, (unsigned) size);
+ char *check;
+
+ if (buffer != 0) {
+ while ((used = (size_t) readlink(name, buffer, (size - 1))) == size - 1) {
+ check = typeRealloc(char, buffer, (unsigned) (size *= 2));
+
+ if (check == 0)
+ break;
+ buffer = check;
+ }
+ if (buffer != 0) {
+ if ((int) used > 0) {
+ buffer[used] = '\0';
+ } else {
+ FREE(buffer);
+ }
+ }
+ }
+ if (buffer != 0) {
+ if (!LYisAbsPath(buffer)) {
+ char *cutoff = LYLastPathSep(name);
+ char *clone = NULL;
+
+ if (cutoff != 0) {
+ HTSprintf0(&clone, "%.*s%s%s",
+ (int) (cutoff - name),
+ name, FILE_SEPARATOR, buffer);
+ FREE(buffer);
+ buffer = clone;
+ }
+ }
+ CTRACE2(TRACE_CFG, (tfp, "IsOurSymlink(%s -> %s)\n", name, buffer));
+ result = IsOurFile(buffer);
+ FREE(buffer);
+ }
+ return result;
+}
+#endif
+
+/*
+ * Verify if this is really a file which is not accessed by a symbolic link,
+ * except for the special case of its directory being pointed to by a link from
+ * a directory owned by root and not writable by other users.
+ */
+BOOL IsOurFile(const char *name)
+{
+ BOOL result = FALSE;
+ struct stat data;
+
+ if (!LYIsTilde(name[0])
+ && lstat(name, &data) == 0
+ && ((S_ISREG(data.st_mode)
+ && (data.st_mode & (S_IWOTH | S_IWGRP)) == 0
+ && data.st_uid == getuid())
+#if defined(HAVE_LSTAT) && defined(S_IFLNK)
+ || (S_ISLNK(data.st_mode) && IsOurSymlink(name))
+#endif
+ )) {
+ int linked = FALSE;
+
+ /*
+ * ( If this is not a single-user system, the other user is presumed by
+ * some people busy trying to use a symlink attack on our files ;-)
+ */
+#if defined(HAVE_LSTAT)
+ char *path = 0;
+ char *leaf;
+
+ StrAllocCopy(path, name);
+ do {
+ if ((leaf = LYPathLeaf(path)) != path)
+ *--leaf = '\0'; /* write a null on the '/' */
+ if (lstat(*path ? path : "/", &data) != 0) {
+ break;
+ }
+ /*
+ * If we find a symbolic link, it has to be in a directory that's
+ * protected. Otherwise someone could have switched it to point
+ * to one of the real user's files.
+ */
+ if (S_ISLNK(data.st_mode)) {
+ linked = TRUE; /* could be link-to-link; doesn't matter */
+ } else if (S_ISDIR(data.st_mode)) {
+ if (linked) {
+ linked = FALSE;
+ /*
+ * We assume that a properly-configured system has the
+ * unwritable directories owned by root. This is not
+ * necessarily so (bin, news, etc., may), but the only
+ * uid we can count on is 0. It would be nice to add a
+ * check for the gid also, but that wouldn't be
+ * portable.
+ *
+ * Likewise, the t-bit would be nice to rely upon. However
+ * it is marked as an extension in POSIX, rather than
+ * required.
+ */
+ if (data.st_uid != 0
+ || (data.st_mode & S_IWOTH) != 0) {
+ linked = TRUE; /* force an error-return */
+ break;
+ }
+ }
+ } else if (linked) {
+ break;
+ }
+ } while (leaf != path);
+ FREE(path);
+#endif
+ result = (BOOLEAN) !linked;
+ }
+ CTRACE2(TRACE_CFG, (tfp, "IsOurFile(%s) %d\n", name, result));
+ return result;
+}
+
+/*
+ * Open a file that we don't want other users to see.
+ */
+static FILE *OpenHiddenFile(const char *name, const char *mode)
+{
+ FILE *fp = 0;
+ struct stat data;
+ BOOLEAN binary = (BOOLEAN) (StrChr(mode, 'b') != 0);
+
+#if defined(O_CREAT) && defined(O_EXCL) /* we have fcntl.h or kindred? */
+ /*
+ * This is the preferred method for creating new files, since it ensures
+ * that no one has an existing file or link that they happen to own.
+ */
+ if (*mode == 'w') {
+ int fd = open(name, O_CREAT | O_EXCL | O_WRONLY, HIDE_CHMOD);
+
+ if (fd < 0
+ && errno == EEXIST
+ && IsOurFile(name)) {
+ if (remove(name) == 0) {
+ /* FIXME: there's a race at this point if directory is open */
+ fd = open(name, O_CREAT | O_EXCL | O_WRONLY, HIDE_CHMOD);
+ }
+ }
+ if (fd >= 0) {
+#if defined(O_BINARY) && defined(__CYGWIN__)
+ if (binary)
+ setmode(fd, O_BINARY);
+#endif
+ fp = fdopen(fd, mode);
+ }
+ } else
+#endif
+ if (*mode == 'a') {
+ if (IsOurFile(name)
+ && chmod(name, HIDE_CHMOD) == 0)
+ fp = fopen(name, mode);
+ else if (lstat(name, &data) != 0)
+ fp = OpenHiddenFile(name, binary ? BIN_W : TXT_W);
+ /*
+ * This is less stringent, but reasonably portable. For new files, the
+ * umask will suffice; however if the file already exists we'll change
+ * permissions first, before opening it. If the chmod fails because of
+ * some reason other than a non-existent file, there's no point in trying
+ * to open it.
+ *
+ * This won't work properly if the user is root, since the chmod succeeds.
+ */
+ } else if (*mode != 'a') {
+ mode_t save = umask(HIDE_UMASK);
+
+ if (chmod(name, HIDE_CHMOD) == 0 || errno == ENOENT)
+ fp = fopen(name, mode);
+ (void) umask(save);
+ }
+ return fp;
+}
+#else
+#define OpenHiddenFile(name, mode) fopen(name, mode)
+#endif /* MULTI_USER_UNIX */
+
+FILE *LYNewBinFile(const char *name)
+{
+#ifdef VMS
+ FILE *fp = fopen(name, BIN_W, "mbc=32");
+
+ (void) chmod(name, HIDE_CHMOD);
+#else
+ FILE *fp = OpenHiddenFile(name, BIN_W);
+#endif
+ return fp;
+}
+
+FILE *LYNewTxtFile(const char *name)
+{
+ FILE *fp;
+
+#ifdef VMS
+ fp = fopen(name, TXT_W, "shr=get");
+ (void) chmod(name, HIDE_CHMOD);
+#else
+ SetDefaultMode(O_TEXT);
+
+ fp = OpenHiddenFile(name, TXT_W);
+
+ SetDefaultMode(O_BINARY);
+#endif
+
+ return fp;
+}
+
+FILE *LYAppendToTxtFile(const char *name)
+{
+ FILE *fp;
+
+#ifdef VMS
+ fp = fopen(name, TXT_A, "shr=get");
+ (void) chmod(name, HIDE_CHMOD);
+#else
+ SetDefaultMode(O_TEXT);
+
+ fp = OpenHiddenFile(name, TXT_A);
+
+ SetDefaultMode(O_BINARY);
+#endif
+ return fp;
+}
+
+#if defined(MULTI_USER_UNIX)
+/*
+ * Restore normal permissions to a copy of a file that we have created with
+ * temp file restricted permissions. The normal umask should apply for user
+ * files. - kw
+ */
+void LYRelaxFilePermissions(const char *name)
+{
+ mode_t mode;
+ struct stat stat_buf;
+
+ if (stat(name, &stat_buf) == 0 &&
+ S_ISREG(stat_buf.st_mode) &&
+ (mode = (stat_buf.st_mode & 0777)) == HIDE_CHMOD) {
+ /*
+ * It looks plausible that this is a file we created with temp file
+ * paranoid permissions (and the umask wasn't even more restrictive
+ * when it was copied). - kw
+ */
+ mode_t save = umask(HIDE_UMASK);
+
+ mode = (mode_t) (((mode & 0700) | 0066) & ~save);
+ (void) umask(save);
+ (void) chmod(name, mode);
+ }
+}
+#endif
+
+/*
+ * Check if the given anchor has an associated file-cache.
+ */
+BOOLEAN LYCachedTemp(char *target,
+ char **cached)
+{
+ BOOLEAN result = FALSE;
+
+ if (*cached) {
+ LYStrNCpy(target, *cached, LY_MAXPATH);
+ FREE(*cached);
+ if (LYCanReadFile(target)) {
+ if (remove(target) != 0) {
+ CTRACE((tfp, "cannot remove %s\n", target));
+ }
+ }
+ result = TRUE;
+ }
+ return result;
+}
+
+#ifndef HAVE_MKDTEMP
+#define mkdtemp(path) ((mktemp(path) != 0) && (mkdir(path, 0700) == 0))
+#endif
+
+/*
+ * Open a temp-file, ensuring that it is unique, and not readable by other
+ * users.
+ *
+ * The mode can be one of: "w", "a", "wb".
+ */
+FILE *LYOpenTemp(char *result,
+ const char *suffix,
+ const char *mode)
+{
+ FILE *fp = 0;
+ BOOL txt = TRUE;
+ char wrt = 'r';
+ LY_TEMP *p;
+
+ CTRACE((tfp, "LYOpenTemp(,%s,%s)\n", suffix, mode));
+ if (result == 0)
+ return 0;
+
+ while (*mode != '\0') {
+ switch (*mode++) {
+ case 'w':
+ wrt = 'w';
+ break;
+ case 'a':
+ wrt = 'a';
+ break;
+ case 'b':
+ txt = FALSE;
+ break;
+ default:
+ CTRACE((tfp, "%s @%d: BUG\n", __FILE__, __LINE__));
+ return 0;
+ }
+ }
+
+ /*
+ * Verify if the given space looks secure enough. Otherwise, make a
+ * secure subdirectory of that.
+ */
+#if defined(MULTI_USER_UNIX) && (defined(HAVE_MKTEMP) || defined(HAVE_MKDTEMP))
+ if (lynx_temp_subspace == 0) {
+ BOOL make_it = FALSE;
+ struct stat sb;
+
+ if (lstat(lynx_temp_space, &sb) == 0
+ && S_ISDIR(sb.st_mode)) {
+ if (sb.st_uid != getuid()
+ || (sb.st_mode & (S_IWOTH | S_IWGRP)) != 0) {
+ make_it = TRUE;
+ CTRACE((tfp,
+ "lynx_temp_space is not our directory %s owner %d mode %03o\n",
+ lynx_temp_space,
+ (int) sb.st_uid,
+ (unsigned) (sb.st_mode & 0777)));
+ }
+ } else {
+ make_it = TRUE;
+ CTRACE((tfp, "lynx_temp_space is not a directory %s\n", lynx_temp_space));
+ }
+ if (make_it) {
+ mode_t old_mask = umask(HIDE_UMASK);
+
+ StrAllocCat(lynx_temp_space, "lynxXXXXXXXXXX");
+ if (mkdtemp(lynx_temp_space) == 0) {
+ printf("%s: %s\n", lynx_temp_space, LYStrerror(errno));
+ exit_immediately(EXIT_FAILURE);
+ }
+ (void) umask(old_mask);
+ lynx_temp_subspace = 1;
+ StrAllocCat(lynx_temp_space, "/");
+ CTRACE((tfp, "made subdirectory %s\n", lynx_temp_space));
+ } else {
+ lynx_temp_subspace = -1;
+ }
+ }
+#endif
+
+ do {
+ if (!fmt_tempname(result, lynx_temp_space, suffix))
+ return 0;
+ if (txt) {
+ switch (wrt) {
+ case 'w':
+ fp = LYNewTxtFile(result);
+ break;
+ case 'a':
+ fp = LYAppendToTxtFile(result);
+ break;
+ }
+ } else {
+ fp = LYNewBinFile(result);
+ }
+ /*
+ * If we get a failure to make a temporary file, don't bother to try a
+ * different name unless the failure was because the file already
+ * exists.
+ */
+#ifdef EEXIST /* FIXME (need a better test) in fcntl.h or unistd.h */
+ if ((fp == 0) && (errno != EEXIST)) {
+ CTRACE((tfp, "... LYOpenTemp(%s) failed: %s\n",
+ result, LYStrerror(errno)));
+ return 0;
+ }
+#endif
+ } while (fp == 0);
+
+ if ((p = typecalloc(LY_TEMP)) != 0) {
+ p->next = ly_temp;
+ StrAllocCopy((p->name), result);
+ p->file = fp;
+ p->outs = (BOOLEAN) (wrt != 'r');
+ ly_temp = p;
+ } else {
+ outofmem(__FILE__, "LYOpenTemp");
+ }
+
+ CTRACE((tfp, "... LYOpenTemp(%s)\n", result));
+ return fp;
+}
+
+/*
+ * Reopen a temporary file
+ */
+FILE *LYReopenTemp(char *name)
+{
+ LY_TEMP *p;
+ FILE *fp = 0;
+
+ LYCloseTemp(name);
+ if ((p = FindTempfileByName(name)) != 0) {
+ fp = p->file = LYAppendToTxtFile(name);
+ }
+ return fp;
+}
+
+/*
+ * Open a temp-file for writing, possibly re-using a previously used
+ * name and file.
+ * If a non-empty fname is given, it is reused if it indicates a file
+ * previously registered as a temp file and, in case the file still
+ * exists, if it looks like we can write to it safely. Otherwise a
+ * new temp file (with new name) will be generated and returned in fname.
+ *
+ * File permissions are set so that the file is not readable by unprivileged
+ * other users.
+ *
+ * Suffix is only used if fname is not being reused.
+ * The mode should be "w", others are possible (they may be passed on)
+ * but probably don't make sense. - kw
+ */
+FILE *LYOpenTempRewrite(char *fname,
+ const char *suffix,
+ const char *mode)
+{
+ FILE *fp = 0;
+ BOOL txt = TRUE;
+ char wrt = 'r';
+ BOOL registered = NO;
+ BOOL writable_exists = NO;
+ BOOL is_ours = NO;
+ BOOL still_open = NO;
+ LY_TEMP *p;
+ struct stat stat_buf;
+
+ CTRACE((tfp, "LYOpenTempRewrite(%s,%s,%s)\n", fname, suffix, mode));
+ if (*fname == '\0') /* first time, no filename yet */
+ return (LYOpenTemp(fname, suffix, mode));
+
+ if ((p = FindTempfileByName(fname)) != 0) {
+ registered = YES;
+ if (p->file != 0)
+ still_open = YES;
+ CTRACE((tfp, "...used before%s\n", still_open ? ", still open!" : "."));
+ }
+
+ if (registered) {
+#ifndef NO_GROUPS
+ writable_exists = HTEditable(fname); /* existing, can write */
+#define CTRACE_EXISTS "exists and is writable, "
+#else
+ writable_exists = (BOOL) (stat(fname, &stat_buf) == 0); /* existing, assume can write */
+#define CTRACE_EXISTS "exists, "
+#endif
+
+ if (writable_exists) {
+ is_ours = IsOurFile(fname);
+ }
+ CTRACE((tfp, "...%s%s\n",
+ writable_exists ? CTRACE_EXISTS : "",
+ is_ours ? "is our file." : "is NOT our file."));
+ }
+
+ /*
+ * Note that in cases where LYOpenTemp is called as fallback below, we
+ * don't call LYRemoveTemp first. That may be appropriate in some cases,
+ * but not trying to remove a weird existing file seems safer and could
+ * help diagnose an unusual situation. (They may be removed anyway later.)
+ */
+ if (still_open) {
+ /*
+ * This should probably not happen. Make a new one.
+ */
+ return (LYOpenTemp(fname, suffix, mode));
+ } else if (!registered) {
+ /*
+ * Not registered. It should have been registered at one point though,
+ * otherwise we wouldn't be called like this.
+ */
+ return (LYOpenTemp(fname, suffix, mode));
+ } else if (writable_exists && !is_ours) {
+ /*
+ * File exists, writable if we checked, but something is wrong with it.
+ */
+ return (LYOpenTemp(fname, suffix, mode));
+#ifndef NO_GROUPS
+ } else if (!is_ours && (lstat(fname, &stat_buf) == 0)) {
+ /*
+ * Exists but not writable, and something is wrong with it.
+ */
+ return (LYOpenTemp(fname, suffix, mode));
+#endif
+ }
+
+ while (*mode != '\0') {
+ switch (*mode++) {
+ case 'w':
+ wrt = 'w';
+ break;
+ case 'a':
+ wrt = 'a';
+ break;
+ case 'b':
+ txt = FALSE;
+ break;
+ default:
+ CTRACE((tfp, "%s @%d: BUG\n", __FILE__, __LINE__));
+ return fp;
+ }
+ }
+
+ if (is_ours) {
+ /*
+ * Yes, it exists, is writable if we checked, and everything looks ok
+ * so far. This should be the most regular case. - kw
+ */
+#ifdef HAVE_TRUNCATE
+ if (txt == TRUE) { /* limitation of LYReopenTemp. shrug */
+ /*
+ * We truncate and then append, this avoids having a small window
+ * in which the file doesn't exist. - kw
+ */
+ if (truncate(fname, (off_t) 0) != 0) {
+ CTRACE((tfp, "... truncate(%s,0) failed: %s\n",
+ fname, LYStrerror(errno)));
+ return (LYOpenTemp(fname, suffix, mode));
+ } else {
+ return (LYReopenTemp(fname));
+ }
+ }
+#endif
+ remove(fname);
+
+ }
+
+ /* We come here in two cases: either the file existed and was ours and we
+ * just got rid of it. Or the file did and does not exist, but is
+ * registered as a temp file. It must have been removed by some means
+ * other than LYRemoveTemp. In both cases, reuse the name! - kw
+ */
+
+ if (txt) {
+ switch (wrt) {
+ case 'w':
+ fp = LYNewTxtFile(fname);
+ break;
+ case 'a':
+ fp = LYAppendToTxtFile(fname);
+ break;
+ }
+ } else {
+ fp = LYNewBinFile(fname);
+ }
+ p->file = fp;
+
+ CTRACE((tfp, "... LYOpenTempRewrite(%s), %s\n", fname,
+ (fp) ? "ok" : "failed"));
+ /*
+ * We could fall back to trying LYOpenTemp() here in case of failure.
+ * After all the checks already done above a filure here should be pretty
+ * unusual though, so maybe it's better to let the user notice that
+ * something went wrong, and not try to fix it up. - kw
+ */
+ return fp;
+}
+
+/*
+ * Special case of LYOpenTemp, used for manipulating bookmark file, i.e., with
+ * renaming.
+ */
+FILE *LYOpenScratch(char *result,
+ const char *prefix)
+{
+ FILE *fp;
+ LY_TEMP *p;
+
+ if (!fmt_tempname(result, prefix, HTML_SUFFIX))
+ return 0;
+
+ if ((fp = LYNewTxtFile(result)) != 0) {
+ if ((p = typecalloc(LY_TEMP)) != 0) {
+ p->next = ly_temp;
+ StrAllocCopy((p->name), result);
+ p->file = fp;
+ ly_temp = p;
+ } else {
+ outofmem(__FILE__, "LYOpenScratch");
+ }
+ }
+ CTRACE((tfp, "LYOpenScratch(%s)\n", result));
+ return fp;
+}
+
+static void LY_close_temp(LY_TEMP * p)
+{
+ if (p->file != 0) {
+ if (p->outs) {
+ LYCloseOutput(p->file);
+ } else {
+ LYCloseInput(p->file);
+ }
+ p->file = 0;
+ }
+}
+
+/*
+ * Close a temp-file, given its name
+ */
+void LYCloseTemp(char *name)
+{
+ LY_TEMP *p;
+
+ CTRACE((tfp, "LYCloseTemp(%s)\n", name));
+ if ((p = FindTempfileByName(name)) != 0) {
+ CTRACE((tfp, "...LYCloseTemp(%s)%s\n", name,
+ (p->file != 0) ? ", closed" : ""));
+ LY_close_temp(p);
+ }
+}
+
+/*
+ * Close a temp-file, given its file-pointer
+ */
+void LYCloseTempFP(FILE *fp)
+{
+ LY_TEMP *p;
+
+ CTRACE((tfp, "LYCloseTempFP\n"));
+ if ((p = FindTempfileByFP(fp)) != 0) {
+ LY_close_temp(p);
+ CTRACE((tfp, "...LYCloseTempFP(%s)\n", p->name));
+ }
+}
+
+/*
+ * Close a temp-file, removing it.
+ */
+int LYRemoveTemp(char *name)
+{
+ LY_TEMP *p, *q;
+ int code = -1;
+
+ if (non_empty(name)) {
+ CTRACE((tfp, "LYRemoveTemp(%s)\n", name));
+ for (p = ly_temp, q = 0; p != 0; q = p, p = p->next) {
+ if (!strcmp(name, p->name)) {
+ if (q != 0) {
+ q->next = p->next;
+ } else {
+ ly_temp = p->next;
+ }
+ LY_close_temp(p);
+ code = HTSYS_remove(name);
+ CTRACE((tfp, "...LYRemoveTemp done(%d)%s\n", code,
+ (p->file != 0) ? ", closed" : ""));
+ CTRACE_FLUSH(tfp);
+ FREE(p->name);
+ FREE(p);
+ break;
+ }
+ }
+ }
+ return code;
+}
+
+/*
+ * Remove all of the temp-files. Note that this assumes that they are closed,
+ * since some systems will not allow us to remove a file which is open.
+ */
+void LYCleanupTemp(void)
+{
+ while (ly_temp != 0) {
+ (void) LYRemoveTemp(ly_temp->name);
+ }
+#if defined(MULTI_USER_UNIX)
+ if (lynx_temp_subspace > 0) {
+ char result[LY_MAXPATH];
+
+ LYStrNCpy(result, lynx_temp_space, sizeof(result) - 1);
+ LYTrimPathSep(result);
+ CTRACE((tfp, "LYCleanupTemp removing %s\n", result));
+ rmdir(result);
+ lynx_temp_subspace = -1;
+ }
+#endif
+}
+
+/*
+ * We renamed a temporary file. Keep track so we can remove it on exit.
+ */
+void LYRenamedTemp(char *oldname,
+ char *newname)
+{
+ LY_TEMP *p;
+
+ CTRACE((tfp, "LYRenamedTemp(old=%s, new=%s)\n", oldname, newname));
+ if ((p = FindTempfileByName(oldname)) != 0) {
+ StrAllocCopy((p->name), newname);
+ }
+}
+
+#ifndef DISABLE_BIBP
+/*
+ * Check that bibhost defines the BibP icon.
+ */
+void LYCheckBibHost(void)
+{
+ DocAddress bibhostIcon;
+ BOOLEAN saveFlag;
+
+ bibhostIcon.address = NULL;
+ StrAllocCopy(bibhostIcon.address, BibP_bibhost);
+ StrAllocCat(bibhostIcon.address, "bibp1.0/bibpicon.jpg");
+ bibhostIcon.post_data = NULL;
+ bibhostIcon.post_content_type = NULL;
+ bibhostIcon.bookmark = FALSE;
+ bibhostIcon.isHEAD = FALSE;
+ bibhostIcon.safe = FALSE;
+ saveFlag = traversal;
+ traversal = TRUE; /* Hack to force error response. */
+ BibP_bibhost_available = (BOOLEAN) (HTLoadAbsolute(&bibhostIcon) == YES);
+ traversal = saveFlag;
+ BibP_bibhost_checked = TRUE;
+}
+#endif /* !DISABLE_BIBP */
+
+/*
+ * Management of User Interface Pages. - kw
+ *
+ * These are mostly temp files. Pages which can be recognized by their special
+ * URL (after having been loaded) need not be tracked here.
+ *
+ * First some private stuff:
+ */
+typedef struct uipage_entry {
+ UIP_t type;
+ unsigned flags;
+ char *url;
+ HTList *alturls;
+ char *file;
+} uip_entry;
+
+#define UIP_F_MULTI 0x0001 /* flag: track multiple instances */
+#define UIP_F_LIMIT 0x0002 /* flag: limit size of alturls list */
+#define UIP_F_LMULTI (UIP_F_MULTI | UIP_F_LIMIT)
+/* *INDENT-OFF* */
+static uip_entry ly_uip[] =
+{
+ { UIP_HISTORY , UIP_F_LMULTI, NULL, NULL, NULL }
+ , { UIP_DOWNLOAD_OPTIONS , 0 , NULL, NULL, NULL }
+ , { UIP_PRINT_OPTIONS , 0 , NULL, NULL, NULL }
+ , { UIP_SHOWINFO , UIP_F_LMULTI, NULL, NULL, NULL }
+ , { UIP_LIST_PAGE , UIP_F_LMULTI, NULL, NULL, NULL }
+ , { UIP_VLINKS , UIP_F_LMULTI, NULL, NULL, NULL }
+#if !defined(NO_OPTION_FORMS)
+ , { UIP_OPTIONS_MENU , UIP_F_LMULTI, NULL, NULL, NULL }
+#endif
+#ifdef DIRED_SUPPORT
+ , { UIP_DIRED_MENU , 0 , NULL, NULL, NULL }
+ , { UIP_PERMIT_OPTIONS , 0 , NULL, NULL, NULL }
+ , { UIP_UPLOAD_OPTIONS , UIP_F_LMULTI, NULL, NULL, NULL }
+#endif
+#ifdef USE_ADDRLIST_PAGE
+ , { UIP_ADDRLIST_PAGE , UIP_F_LMULTI, NULL, NULL, NULL }
+#endif
+ , { UIP_LYNXCFG , UIP_F_LMULTI, NULL, NULL, NULL }
+#if !defined(NO_CONFIG_INFO)
+ , { UIP_CONFIG_DEF , UIP_F_LMULTI, NULL, NULL, NULL }
+#endif
+/* The following are not generated tempfiles: */
+ , { UIP_TRACELOG , 0 , NULL, NULL, NULL }
+#if defined(DIRED_SUPPORT) && defined(OK_INSTALL)
+ , { UIP_INSTALL , 0 , NULL, NULL, NULL }
+#endif
+
+};
+/* *INDENT-ON* */
+
+/* Public entry points for User Interface Page management: */
+
+BOOL LYIsUIPage3(const char *url,
+ UIP_t type,
+ int flagparam)
+{
+ unsigned int i;
+ size_t l;
+ BOOL result = NO;
+
+ if (url) {
+ for (i = 0; i < TABLESIZE(ly_uip); i++) {
+ if (ly_uip[i].type == type) {
+ if (!ly_uip[i].url) {
+ break;
+ } else if ((flagparam & UIP_P_FRAG) ?
+ (!StrNCmp(ly_uip[i].url, url, (l = strlen(ly_uip[i].url)))
+ && (url[l] == '\0' || url[l] == '#')) :
+ !strcmp(ly_uip[i].url, url)) {
+ result = YES;
+ } else if (ly_uip[i].flags & UIP_F_MULTI) {
+ char *p;
+ HTList *l0 = ly_uip[i].alturls;
+
+ while ((p = (char *) HTList_nextObject(l0)) != NULL) {
+ if ((flagparam & UIP_P_FRAG)
+ ? (!StrNCmp(p, url, (l = strlen(p))) &&
+ (url[l] == '\0' || url[l] == '#'))
+ : !strcmp(p, url)) {
+ result = YES;
+ break;
+ }
+ }
+ }
+ break;
+ }
+ }
+ }
+ return result;
+}
+
+void LYRegisterUIPage(const char *url,
+ UIP_t type)
+{
+ unsigned int i;
+
+ for (i = 0; i < TABLESIZE(ly_uip); i++) {
+ if (ly_uip[i].type == type) {
+ if (ly_uip[i].url && url &&
+ !strcmp(ly_uip[i].url, url)) {
+
+ } else if (!ly_uip[i].url || !url ||
+ !(ly_uip[i].flags & UIP_F_MULTI)) {
+ StrAllocCopy(ly_uip[i].url, url);
+
+ } else {
+ char *p;
+ int n = 0;
+ HTList *l0 = ly_uip[i].alturls;
+
+ while ((p = (char *) HTList_nextObject(l0)) != NULL) {
+ if (!strcmp(p, url))
+ return;
+ if (!strcmp(p, ly_uip[i].url)) {
+ StrAllocCopy(ly_uip[i].url, url);
+ return;
+ }
+ n++;
+ }
+ if (!ly_uip[i].alturls)
+ ly_uip[i].alturls = HTList_new();
+
+ if (n >= HTCacheSize && (ly_uip[i].flags & UIP_F_LIMIT))
+ HTList_removeFirstObject(ly_uip[i].alturls);
+ HTList_addObject(ly_uip[i].alturls, ly_uip[i].url);
+ ly_uip[i].url = NULL;
+ StrAllocCopy(ly_uip[i].url, url);
+ }
+
+ return;
+ }
+ }
+}
+
+void LYUIPages_free(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < TABLESIZE(ly_uip); i++) {
+ FREE(ly_uip[i].url);
+ FREE(ly_uip[i].file);
+ LYFreeStringList(ly_uip[i].alturls);
+ ly_uip[i].alturls = NULL;
+ }
+}
+
+/*
+ * Convert local pathname to www name
+ * (do not bother about file://localhost prefix at this point).
+ */
+const char *wwwName(const char *pathname)
+{
+ const char *cp = NULL;
+
+#if defined(USE_DOS_DRIVES)
+ cp = HTDOS_wwwName(pathname);
+#else
+#ifdef VMS
+ cp = HTVMS_wwwName(pathname);
+#else
+ cp = pathname;
+#endif /* VMS */
+#endif
+
+ return cp;
+}
+
+/*
+ * Given a user-specified filename, e.g., for download or print, validate and
+ * expand it. Expand home-directory expressions in the given string. Only
+ * allow pipes if the user can spawn shell commands.
+ */
+BOOLEAN LYValidateFilename(bstring **result,
+ bstring **given)
+{
+ BOOLEAN code = TRUE;
+ char *cp = NULL;
+
+ /*
+ * Cancel if the user entered "/dev/null" on Unix, or an "nl:" path on VMS.
+ * - FM
+ */
+ if (LYIsNullDevice((*given)->str)) {
+ /* just ignore it */
+ code = FALSE;
+#ifdef HAVE_POPEN
+ } else if (LYIsPipeCommand((*given)->str)) {
+ if (no_shell) {
+ HTUserMsg(SPAWNING_DISABLED);
+ code = FALSE;
+ } else {
+ BStrCopy(*result, (*given));
+ }
+#endif
+ } else {
+ if (FindLeadingTilde((*given)->str, TRUE) != 0) {
+ char *cp1 = NULL;
+
+ StrAllocCopy(cp1, (*given)->str);
+ LYTildeExpand(&cp1, TRUE);
+ BStrCopy0(*result, cp1);
+ BStrCopy0(*given, cp1);
+ FREE(cp1);
+ }
+#ifdef VMS
+ if (StrChr((*given)->str, '/') != NULL) {
+ BStrCopy0(*result, HTVMS_name("", (*given)->str));
+ BStrCopy(*given, *result);
+ }
+ if ((*given)->str[0] != '/'
+ && StrChr((*given)->str, ':') == NULL) {
+ BStrCopy0(*result, "sys$disk:");
+ if (StrChr((*given)->str, ']') == NULL)
+ BStrCat0(*result, "[]");
+ BStrCat(*result, (*given));
+ } else {
+ BStrCopy(*result, (*given));
+ }
+#else
+
+#ifndef __EMX__
+ if (!LYisAbsPath((*given)->str)) {
+#if defined(__DJGPP__) || defined(_WINDOWS)
+ if (StrChr((*result)->str, ':') != NULL)
+ cp = NULL;
+ else
+#endif /* __DJGPP__ || _WINDOWS */
+ {
+#ifdef SUPPORT_CHDIR
+ static char buf[LY_MAXPATH];
+
+ cp = Current_Dir(buf);
+#else
+ cp = original_dir;
+#endif
+ }
+ } else
+#endif /* __EMX__ */
+ cp = NULL;
+
+ if (cp) {
+ LYTrimPathSep(cp);
+ BStrCopy0(*result, cp);
+ BStrCat0(*result, "/");
+ } else {
+ BStrCopy0(*result, "");
+ }
+ if (code) {
+ cp = HTSYS_name((*given)->str);
+ BStrCat0(*result, cp);
+ }
+#endif /* VMS */
+ }
+ return code;
+}
+
+/*
+ * Given a valid filename, check if it exists. If so, we'll have to worry
+ * about overwriting it.
+ *
+ * Returns:
+ * 'Y' (yes/success)
+ * 'N' (no/retry)
+ * 3 (cancel)
+ */
+int LYValidateOutput(char *filename)
+{
+ int c;
+
+ CTRACE((tfp, "LYValidateOutput '%s'\n", filename));
+
+ /*
+ * Assume we can write to a pipe
+ */
+#ifdef HAVE_POPEN
+ if (LYIsPipeCommand(filename))
+ return 'Y';
+#endif
+
+ if (no_dotfiles || !show_dotfiles) {
+ if (*LYPathLeaf(filename) == '.') {
+ HTAlert(FILENAME_CANNOT_BE_DOT);
+ return 'N';
+ }
+ }
+
+ /*
+ * See if it already exists.
+ */
+ if (LYCanReadFile(filename)) {
+#ifdef VMS
+ c = HTConfirm(FILE_EXISTS_HPROMPT);
+#else
+ c = HTConfirm(FILE_EXISTS_OPROMPT);
+#endif /* VMS */
+ if (HTLastConfirmCancelled()) {
+ HTInfoMsg(SAVE_REQUEST_CANCELLED);
+ return 3;
+ } else if (c == NO) {
+ return 'N';
+ }
+ } else if (!LYCanWriteFile(filename)) {
+ return 'N';
+ }
+ return 'Y';
+}
+
+/*
+ * Convert a local filename to a URL
+ */
+void LYLocalFileToURL(char **target,
+ const char *source)
+{
+ const char *leaf;
+
+ StrAllocCopy(*target, "file://localhost");
+
+ leaf = wwwName(source);
+
+ if (!LYisAbsPath(source)) {
+ char temp[LY_MAXPATH];
+
+ Current_Dir(temp);
+ if (!LYIsHtmlSep(*temp))
+ LYAddHtmlSep(target);
+ StrAllocCat(*target, temp);
+ }
+ if (leaf && !LYIsHtmlSep(*leaf))
+ LYAddHtmlSep(target);
+ StrAllocCat(*target, leaf);
+}
+
+#define PUT_STRING(buf) (*(target)->isa->put_string)(target, buf)
+
+/*
+ * Like WriteInternalTitle, used for writing title on pages constructed via
+ * streams.
+ */
+void WriteStreamTitle(HTStream *target, const char *Title)
+{
+ char *buf = 0;
+
+ PUT_STRING(LYNX_DOCTYPE);
+ PUT_STRING("<html>\n<head>\n");
+ LYAddMETAcharsetToStream(target, -1);
+ HTSprintf0(&buf, "<title>%s</title>\n</head>\n<body>\n", Title);
+ PUT_STRING(buf);
+ FREE(buf);
+}
+
+/*
+ * Open a temporary file for internal-pages, optionally reusing an existing
+ * filename.
+ */
+FILE *InternalPageFP(char *filename,
+ int reuse_flag)
+{
+ FILE *fp;
+
+ if (LYReuseTempfiles && reuse_flag) {
+ fp = LYOpenTempRewrite(filename, HTML_SUFFIX, BIN_W);
+ } else {
+ (void) LYRemoveTemp(filename);
+ fp = LYOpenTemp(filename, HTML_SUFFIX, BIN_W);
+ }
+ if (fp == NULL) {
+ HTAlert(CANNOT_OPEN_TEMP);
+ }
+ return fp;
+}
+
+/*
+ * This part is shared by all internal pages.
+ */
+void WriteInternalTitle(FILE *fp0, const char *Title)
+{
+ fprintf(fp0, LYNX_DOCTYPE);
+
+ fprintf(fp0, "<html>\n<head>\n");
+ LYAddMETAcharsetToFD(fp0, -1);
+ if (LYIsListpageTitle(Title)) {
+ if (StrChr(HTLoadedDocumentURL(), '"') == NULL) {
+ char *Address = NULL;
+
+ /*
+ * Insert a BASE tag so there is some way to relate the List Page
+ * file to its underlying document after we are done. It won't be
+ * actually used for resolving relative URLs. - kw
+ */
+ StrAllocCopy(Address, HTLoadedDocumentURL());
+ LYEntify(&Address, FALSE);
+ fprintf(fp0, "<base href=\"%s\">\n", Address);
+ FREE(Address);
+ }
+ }
+ fprintf(fp0, "<title>%s</title>\n</head>\n<body>\n", Title);
+}
+
+/*
+ * This is used to start most internal pages, except for special cases where
+ * the embedded HREF's in the title differ.
+ */
+void BeginInternalPage(FILE *fp0, const char *Title,
+ const char *HelpURL)
+{
+ WriteInternalTitle(fp0, Title);
+
+ if ((user_mode == NOVICE_MODE)
+ && LYwouldPush(Title, NULL)
+ && (HelpURL != 0)) {
+ fprintf(fp0, "<h1>%s (%s%s%s), <a href=\"%s%s\">help</a></h1>\n",
+ Title, LYNX_NAME, VERSION_SEGMENT, LYNX_VERSION,
+ helpfilepath, HelpURL);
+ } else {
+ fprintf(fp0, "<h1>%s (%s%s%s)</h1>\n",
+ Title, LYNX_NAME, VERSION_SEGMENT, LYNX_VERSION);
+ }
+}
+
+void EndInternalPage(FILE *fp0)
+{
+ fprintf(fp0, "</body>\n</html>");
+}
+
+char *trimPoundSelector(char *address)
+{
+ char *pound = findPoundSelector(address);
+
+ if (pound != 0)
+ *pound = '\0';
+ return pound;
+}
+
+/*
+ * Trim a trailing path-separator to avoid confusing other programs when we concatenate
+ * to it. This only applies to local filesystems.
+ */
+void LYTrimPathSep(char *path)
+{
+ size_t len;
+
+ if (path != 0
+ && (len = strlen(path)) != 0
+ && LYIsPathSep(path[len - 1]))
+ path[len - 1] = 0;
+}
+
+/*
+ * Add a trailing path-separator to avoid confusing other programs when we concatenate
+ * to it. This only applies to local filesystems.
+ */
+void LYAddPathSep(char **path)
+{
+ size_t len;
+ char *temp;
+
+ if ((path != 0)
+ && ((temp = *path) != 0)
+ && (len = strlen(temp)) != 0
+ && !LYIsPathSep(temp[len - 1])) {
+ StrAllocCat(*path, FILE_SEPARATOR);
+ }
+}
+
+/*
+ * Add a trailing path-separator to avoid confusing other programs when we concatenate
+ * to it. This only applies to local filesystems.
+ */
+void LYAddPathSep0(char *path)
+{
+ size_t len;
+
+ if ((path != 0)
+ && (len = strlen(path)) != 0
+ && (len < LY_MAXPATH - 2)
+ && !LYIsPathSep(path[len - 1])) {
+ strcat(path, FILE_SEPARATOR);
+ }
+}
+
+/*
+ * Check if a given string contains a path separator
+ */
+char *LYLastPathSep(const char *path)
+{
+ char *result;
+
+#if defined(USE_DOS_DRIVES)
+ if ((result = strrchr(path, '\\')) == 0)
+ result = strrchr(path, '/');
+#else
+ result = strrchr(path, '/');
+#endif
+ return result;
+}
+
+/*
+ * Trim a trailing path-separator to avoid confusing other programs when we concatenate
+ * to it. This only applies to HTML paths.
+ */
+void LYTrimHtmlSep(char *path)
+{
+ size_t len;
+
+ if (path != 0
+ && (len = strlen(path)) != 0
+ && LYIsHtmlSep(path[len - 1]))
+ path[len - 1] = 0;
+}
+
+/*
+ * Add a trailing path-separator to avoid confusing other programs when we concatenate
+ * to it. This only applies to HTML paths.
+ */
+void LYAddHtmlSep(char **path)
+{
+ size_t len;
+ char *temp;
+
+ if ((path != 0)
+ && ((temp = *path) != 0)
+ && (len = strlen(temp)) != 0
+ && !LYIsHtmlSep(temp[len - 1])) {
+ StrAllocCat(*path, "/");
+ }
+}
+
+/*
+ * Add a trailing path-separator to avoid confusing other programs when we concatenate
+ * to it. This only applies to HTML paths.
+ */
+void LYAddHtmlSep0(char *path)
+{
+ size_t len;
+
+ if ((path != 0)
+ && (len = strlen(path)) != 0
+ && (len < LY_MAXPATH - 2)
+ && !LYIsHtmlSep(path[len - 1])) {
+ strcat(path, "/");
+ }
+}
+
+/*
+ * Rename a file
+ */
+int LYRenameFile(char *src,
+ char *dst)
+{
+#ifdef _WINDOWS
+ /*
+ * If dest_file exists prior to calling rename(), rename() will fail on Windows platforms.
+ * https://www.securecoding.cert.org/confluence/display/c/FIO10-C.+Take+care+when+using+the+rename%28%29+function
+ */
+ struct stat st;
+
+ if (stat(dst, &st) == 0) {
+ unlink(dst);
+ }
+#endif
+ return rename(src, dst);
+}
+
+/*
+ * Copy a file
+ */
+int LYCopyFile(char *src,
+ char *dst)
+{
+ int code;
+ const char *program;
+
+ if ((program = HTGetProgramPath(ppCOPY)) != NULL) {
+ char *the_command = 0;
+
+ HTAddParam(&the_command, COPY_COMMAND, 1, program);
+ HTAddParam(&the_command, COPY_COMMAND, 2, src);
+ HTAddParam(&the_command, COPY_COMMAND, 3, dst);
+ HTEndParam(&the_command, COPY_COMMAND, 3);
+
+ CTRACE((tfp, "command: %s\n", the_command));
+ stop_curses();
+ code = LYSystem(the_command);
+ start_curses();
+
+ FREE(the_command);
+ } else {
+ FILE *fin, *fout;
+ unsigned char buff[BUFSIZ];
+ size_t len;
+
+ code = EOF;
+ if ((fin = fopen(src, BIN_R)) != 0) {
+ if ((fout = fopen(dst, BIN_W)) != 0) {
+ code = 0;
+ while ((len = fread(buff, (size_t) 1, sizeof(buff), fin)) != 0) {
+ if (fwrite(buff, (size_t) 1, len, fout) < len
+ || ferror(fout)) {
+ code = EOF;
+ break;
+ }
+ }
+ LYCloseOutput(fout);
+ }
+ LYCloseInput(fin);
+ }
+ CTRACE((tfp, "builtin copy ->%d\n\tsource=%s\n\ttarget=%s\n",
+ code, src, dst));
+ }
+
+ if (code) {
+ HTAlert(CANNOT_WRITE_TO_FILE);
+ }
+ return code;
+}
+
+#ifdef __DJGPP__
+static char *escape_backslashes(char *source)
+{
+ char *result = 0;
+ int count = 0;
+ int n;
+
+ for (n = 0; source[n] != '\0'; ++n) {
+ if (source[n] == '\\')
+ ++count;
+ }
+ if (count != 0) {
+ result = malloc(count + n + 1);
+ if (result != 0) {
+ int ch;
+ char *target = result;
+
+ while ((ch = *source++) != '\0') {
+ if (ch == '\\')
+ *target++ = ch;
+ *target++ = ch;
+ }
+ *target = '\0';
+ }
+ }
+ return result;
+}
+#endif /* __DJGPP__ */
+/*
+ * Invoke a shell command, return nonzero on error.
+ */
+int LYSystem(char *command)
+{
+ int code;
+ int do_free = 0;
+
+#if defined(HAVE_SIGACTION) && defined(SIGTSTP) && !defined(USE_SLANG)
+ struct sigaction saved_sigtstp_act;
+ BOOLEAN sigtstp_saved = FALSE;
+#endif
+ int saved_errno = 0;
+
+#ifdef __EMX__
+ int scrsize[4];
+#endif
+
+ fflush(stdout);
+ fflush(stderr);
+ CTRACE((tfp, "LYSystem(%s)\n", command));
+ CTRACE_FLUSH(tfp);
+
+#ifdef __DJGPP__
+ __djgpp_set_ctrl_c(0);
+ _go32_want_ctrl_break(1);
+#endif /* __DJGPP__ */
+
+#ifdef VMS
+ code = DCLsystem(command);
+#else
+# ifdef __EMX__ /* FIXME: Should be LY_CONVERT_SLASH? */
+ /* Configure writes commands which contain direct slashes.
+ Native command-(non)-shell will not tolerate this. */
+ {
+ char *space = command, *slash = command;
+
+ _scrsize(scrsize);
+ while (*space && *space != ' ' && *space != '\t')
+ space++;
+ while (slash < space && *slash != '/')
+ slash++;
+ if (slash != space) {
+ char *old = command;
+
+ command = NULL;
+ StrAllocCopy(command, old);
+ do_free = 1;
+ slash = (slash - old) + command - 1;
+ space = (space - old) + command;
+ while (++slash < space)
+ if (*slash == '/')
+ *slash = '\\';
+ }
+ }
+# endif
+
+ /*
+ * This chunk of code does not work, for two reasons:
+ * a) the Cygwin system() function edits out the backslashes
+ * b) it does not account for more than one parameter, e.g., +number
+ */
+#if defined(__CYGWIN__) && defined(DOSPATH) /* 1999/02/26 (Fri) */
+ {
+ char cmd[LY_MAXPATH];
+ char win32_name[LY_MAXPATH];
+ char new_cmd[LY_MAXPATH];
+ char new_command[LY_MAXPATH * 2 + 10];
+ char *p, *q;
+
+ p = command;
+ q = cmd;
+ while (*p) {
+ if (*p == ' ')
+ break;
+ else
+ *q = *p;
+ p++;
+ q++;
+ }
+ *q = '\0';
+
+ if (cmd[0] == '/')
+ cygwin_conv_to_full_posix_path(cmd, new_cmd);
+ else
+ strcpy(new_cmd, cmd);
+
+ while (*p == ' ')
+ p++;
+
+ if (StrChr(p, '\\') == NULL) {
+ /* for Windows Application */
+ cygwin_conv_to_full_win32_path(p, win32_name);
+ sprintf(new_command, "%.*s \"%.*s\"",
+ LY_MAXPATH, new_cmd, LY_MAXPATH, win32_name);
+ } else {
+ /* for DOS like editor */
+ q = win32_name;
+ while (*p) {
+ if (*p == '\\') {
+ if (*(p + 1) == '\\')
+ p++;
+ }
+ *q = *p;
+ q++, p++;
+ }
+ *q = '\0';
+ sprintf(new_command, "%.*s %.*s", LY_MAXPATH, new_cmd, LY_MAXPATH, win32_name);
+ }
+ command = new_command;
+ }
+#endif
+
+#ifdef __DJGPP__
+ if (dj_is_bash) {
+ char *new_command = escape_backslashes(command);
+
+ if (new_command != 0) {
+ if (do_free)
+ free(command);
+ command = new_command;
+ }
+ }
+#endif /* __DJGPP__ */
+
+#ifdef _WIN_CC
+ code = exec_command(command, TRUE); /* Wait exec */
+#else /* !_WIN_CC */
+#ifdef SIGPIPE
+ if (restore_sigpipe_for_children)
+ signal(SIGPIPE, SIG_DFL); /* Some commands expect the default */
+#endif
+#if defined(HAVE_SIGACTION) && defined(SIGTSTP) && !defined(USE_SLANG)
+ if (!dump_output_immediately && !LYCursesON && !no_suspend)
+ sigtstp_saved = LYToggleSigDfl(SIGTSTP, &saved_sigtstp_act, 1);
+#endif
+ code = system(command);
+ saved_errno = errno;
+#if defined(HAVE_SIGACTION) && defined(SIGTSTP) && !defined(USE_SLANG)
+ if (sigtstp_saved)
+ LYToggleSigDfl(SIGTSTP, &saved_sigtstp_act, 0);
+#endif
+#ifdef SIGPIPE
+ if (restore_sigpipe_for_children)
+ signal(SIGPIPE, SIG_IGN); /* Ignore it again - kw */
+#endif
+#endif
+#endif
+
+#ifdef __DJGPP__
+ __djgpp_set_ctrl_c(1);
+ _go32_want_ctrl_break(0);
+#endif /* __DJGPP__ */
+
+ fflush(stdout);
+ fflush(stderr);
+
+ if (do_free)
+ FREE(command);
+#if !defined(UCX) || !defined(VAXC) /* errno not modifiable ?? */
+ set_errno(saved_errno); /* may have been clobbered */
+#endif
+#ifdef __EMX__ /* Check whether the screen size changed */
+ size_change(0);
+#endif
+ return code;
+}
+
+/*
+ * Return a string which can be used in LYSystem() for spawning a subshell
+ */
+#if defined(__CYGWIN__) /* 1999/02/26 (Fri) */
+int Cygwin_Shell(void)
+{
+ char *shell;
+ int code;
+ STARTUPINFO startUpInfo;
+ PROCESS_INFORMATION procInfo;
+ SECURITY_ATTRIBUTES sa;
+
+ /* Set up security attributes to allow inheritance of the file handle */
+
+ sa.nLength = sizeof(SECURITY_ATTRIBUTES);
+ sa.lpSecurityDescriptor = 0;
+ sa.bInheritHandle = TRUE;
+
+ /* Init a startup structure */
+ GetStartupInfo(&startUpInfo);
+
+ shell = LYGetEnv("COMSPEC");
+
+ /* Create the child process, specifying
+ inherited handles. Pass the value of the
+ handle as a command line parameter */
+ code = 0;
+ if (shell) {
+ code = CreateProcess(0, shell, 0, 0,
+ TRUE, 0,
+ 0, 0, &startUpInfo, &procInfo);
+
+ if (!code) {
+ printf("shell = [%s], code = %ld\n", shell, (long) GetLastError());
+ }
+
+ /* wait for the child to return (this is not a requirement
+ since the child is its own independent process) */
+ WaitForSingleObject(procInfo.hProcess, INFINITE);
+ }
+
+ return code;
+}
+#endif
+
+#ifdef WIN_EX
+/*
+ * Quote the path to make it safe for shell command processing.
+ * We always quote it not only includes spaces in it.
+ * At least we should quote paths which include "&".
+ */
+char *quote_pathname(char *pathname)
+{
+ char *result = NULL;
+
+ HTSprintf0(&result, "\"%s\"", pathname);
+ return result;
+}
+#endif
+
+const char *LYSysShell(void)
+{
+ const char *shell = 0;
+
+#ifdef DOSPATH
+#ifdef WIN_EX
+ shell = LYGetEnv("SHELL");
+ if (shell) {
+ if (access(shell, 0) != 0)
+ shell = LYGetEnv("COMSPEC");
+ } else {
+ shell = LYGetEnv("COMSPEC");
+ }
+ if (shell == NULL) {
+ if (system_is_NT)
+ shell = "cmd.exe";
+ else
+ shell = "command.com";
+ }
+#else
+ shell = LYGetEnv("SHELL");
+ if (shell == NULL) {
+ shell = LYGetEnv("COMSPEC");
+ }
+ if (shell == NULL) {
+ shell = "command.com";
+ }
+#endif /* WIN_EX */
+#else
+#ifdef __EMX__
+ if (LYGetEnv("SHELL") != NULL) {
+ shell = LYGetEnv("SHELL");
+ } else {
+ shell = (LYGetEnv("COMSPEC") == NULL) ? "cmd.exe" : LYGetEnv("COMSPEC");
+ }
+#else
+#ifdef VMS
+ shell = "";
+#else
+ shell = "exec $SHELL";
+#endif /* __EMX__ */
+#endif /* VMS */
+#endif /* DOSPATH */
+ return shell;
+}
+
+#ifdef VMS
+#define DISPLAY "DECW$DISPLAY"
+#else
+#define DISPLAY "DISPLAY"
+#endif /* VMS */
+
+/*
+ * Return the X-Window $DISPLAY string if it is nonnull/nonempty
+ */
+char *LYgetXDisplay(void)
+{
+ return LYGetEnv(DISPLAY);
+}
+
+/*
+ * Set the value of the X-Window $DISPLAY variable (yes it leaks memory, but
+ * that is putenv's fault).
+ */
+void LYsetXDisplay(char *new_display)
+{
+ if (new_display != 0) {
+#ifdef VMS
+ LYUpperCase(new_display);
+ Define_VMSLogical(DISPLAY, new_display);
+#else
+ static char *display_putenv_command;
+
+ display_putenv_command = NULL; /* yes, this is a leak - cannot fix */
+ HTSprintf0(&display_putenv_command, "DISPLAY=%s", new_display);
+ putenv(display_putenv_command);
+#endif /* VMS */
+ if ((new_display = LYgetXDisplay()) != 0) {
+ StrAllocCopy(x_display, new_display);
+ }
+ }
+}
+
+#ifdef CAN_CUT_AND_PASTE
+#ifdef __EMX__
+
+static int proc_type = -1;
+static PPIB pib;
+static HAB hab;
+static HMQ hmq;
+
+static void morph_PM(void)
+{
+ PTIB tib;
+ int first = 0;
+
+ if (proc_type == -1) {
+ DosGetInfoBlocks(&tib, &pib);
+ proc_type = pib->pib_ultype;
+ first = 1;
+ }
+ if (pib->pib_ultype != 3) /* 2 is VIO */
+ pib->pib_ultype = 3; /* 3 is PM */
+ if (first)
+ hab = WinInitialize(0);
+ /* 64 messages if before OS/2 3.0, ignored otherwise */
+ hmq = WinCreateMsgQueue(hab, 64);
+ WinCancelShutdown(hmq, 1); /* Do not inform us on shutdown */
+}
+
+static void unmorph_PM(void)
+{
+ WinDestroyMsgQueue(hmq);
+ pib->pib_ultype = proc_type;
+}
+
+int size_clip(void)
+{
+ return 8192;
+}
+
+/* Code partially stolen from FED editor. */
+
+int put_clip(const char *s)
+{
+ int sz = strlen(s) + 1;
+ int ret = EOF, nl = 0;
+ char *pByte = 0, *s1 = s, c, *t;
+
+ while ((c = *s1++)) {
+ if (c == '\r' && *s1 == '\n')
+ s1++;
+ else if (c == '\n')
+ nl++;
+ }
+ if (DosAllocSharedMem((PPVOID) & pByte, 0, sz + nl,
+ PAG_WRITE | PAG_COMMIT | OBJ_GIVEABLE | OBJ_GETTABLE))
+ return ret;
+
+ if (!nl)
+ memcpy(pByte, s, sz);
+ else {
+ t = pByte;
+ while ((c = *t++ = *s++))
+ if (c == '\n' && (t == pByte + 1 || t[-2] != '\r'))
+ t[-1] = '\r', *t++ = '\n';
+ }
+
+ morph_PM();
+ if (!hab)
+ goto fail;
+
+ WinOpenClipbrd(hab);
+ WinEmptyClipbrd(hab);
+ if (WinSetClipbrdData(hab, (ULONG) pByte, CF_TEXT, CFI_POINTER))
+ ret = 0;
+ WinCloseClipbrd(hab);
+ unmorph_PM();
+ if (ret == 0)
+ return 0;
+ fail:
+ DosFreeMem((PPVOID) & pByte);
+ return EOF;
+}
+
+static int clip_open;
+
+/* get_clip_grab() returns a pointer to the string in the system area.
+ get_clip_release() should be called ASAP after this. */
+
+char *get_clip_grab(void)
+{
+ char *ClipData;
+ ULONG ulFormat;
+ int sz;
+
+ morph_PM();
+ if (!hab)
+ return 0;
+ if (clip_open)
+ get_clip_release();
+
+ WinQueryClipbrdFmtInfo(hab, CF_TEXT, &ulFormat);
+ if (ulFormat != CFI_POINTER) {
+ unmorph_PM();
+ return 0;
+ }
+ WinOpenClipbrd(hab);
+ clip_open = 1;
+ ClipData = (char *) WinQueryClipbrdData(hab, CF_TEXT);
+ sz = strlen(ClipData);
+ if (!ClipData || !sz) {
+ get_clip_release();
+ return 0;
+ }
+ return ClipData;
+}
+
+void get_clip_release(void)
+{
+ if (!clip_open)
+ return;
+ WinCloseClipbrd(hab);
+ clip_open = 0;
+ unmorph_PM();
+}
+
+#else /* !( defined __EMX__ ) */
+
+# if !defined(WIN_EX) && defined(HAVE_POPEN)
+
+static FILE *paste_handle = 0;
+static char *paste_buf = NULL;
+
+void get_clip_release(void)
+{
+ if (paste_handle != 0)
+ pclose(paste_handle);
+ if (paste_buf)
+ FREE(paste_buf);
+}
+
+static int clip_grab(void)
+{
+ char *cmd = LYGetEnv("RL_PASTE_CMD");
+
+ if (paste_handle)
+ pclose(paste_handle);
+ if (!cmd)
+ return 0;
+
+ paste_handle = popen(cmd, TXT_R);
+ if (!paste_handle)
+ return 0;
+ return 1;
+}
+
+#define PASTE_BUFFER 1008
+#define CF_TEXT 0 /* Not used */
+
+char *get_clip_grab(void)
+{
+ int len;
+ unsigned size = PASTE_BUFFER;
+ int off = 0;
+
+ if (!clip_grab())
+ return NULL;
+ if (!paste_handle)
+ return NULL;
+ if (paste_buf)
+ FREE(paste_buf);
+ paste_buf = typeMallocn(char, PASTE_BUFFER);
+
+ while (1) {
+ len = (int) fread(paste_buf + off,
+ (size_t) 1,
+ (size_t) PASTE_BUFFER - 1,
+ paste_handle);
+ paste_buf[off + len] = '\0';
+ if (len < PASTE_BUFFER - 1)
+ break;
+ if (StrChr(paste_buf + off, '\r')
+ || StrChr(paste_buf + off, '\n'))
+ break;
+ paste_buf = typeRealloc(char, paste_buf, size += PASTE_BUFFER - 1);
+
+ off += len;
+ }
+ return paste_buf;
+}
+
+int put_clip(const char *s)
+{
+ char *cmd = LYGetEnv("RL_CLCOPY_CMD");
+ FILE *fh;
+ size_t l = strlen(s), res;
+
+ if (!cmd)
+ return -1;
+
+ fh = popen(cmd, TXT_W);
+ if (!fh)
+ return -1;
+ res = fwrite(s, (size_t) 1, l, fh);
+ if (pclose(fh) != 0 || res != l)
+ return -1;
+ return 0;
+}
+
+# endif /* !defined(WIN_EX) && defined(HAVE_POPEN) */
+
+#endif /* __EMX__ */
+
+/*
+ * Sleep for a number of milli-sec.
+ */
+void LYmsec_delay(unsigned msec)
+{
+#if defined(_WINDOWS)
+ Sleep(msec);
+
+#elif defined(HAVE_NAPMS)
+ napms((int) msec);
+
+#elif defined(DJGPP) || defined(HAVE_USLEEP)
+ usleep(1000 * msec);
+
+#else
+ struct timeval tv;
+ unsigned long usec = 1000UL * msec;
+
+ tv.tv_sec = usec / 1000000UL;
+ tv.tv_usec = usec % 1000000UL;
+ select(0, NULL, NULL, NULL, &tv);
+#endif
+}
+
+#if defined(WIN_EX) /* 1997/10/16 (Thu) 20:13:28 */
+
+int put_clip(const char *szBuffer)
+{
+ HANDLE hWnd;
+ HANDLE m_hLogData;
+ LPTSTR pLogData;
+ HANDLE hClip;
+ int len;
+
+ if (szBuffer == NULL)
+ return EOF;
+
+ len = (int) strlen(szBuffer);
+ if (len == 0)
+ return EOF;
+ else
+ len++;
+
+ m_hLogData = GlobalAlloc(GHND, len);
+ if (m_hLogData == NULL) {
+ return EOF;
+ }
+
+ hWnd = NULL;
+ if (!OpenClipboard(hWnd)) {
+ return EOF;
+ }
+ /* Remove the current Clipboard contents */
+ if (!EmptyClipboard()) {
+ GlobalFree(m_hLogData);
+ return EOF;
+ }
+
+ /* Lock the global memory while we write to it. */
+ pLogData = (LPTSTR) GlobalLock(m_hLogData);
+
+ lstrcpy((LPTSTR) pLogData, szBuffer);
+ GlobalUnlock(m_hLogData);
+
+ /* If there were any lines at all then copy them to clipboard. */
+ hClip = SetClipboardData(CF_TEXT, m_hLogData);
+ if (!hClip) {
+ /* If we couldn't clip the data then free the global handle. */
+ GlobalFree(m_hLogData);
+ }
+
+ CloseClipboard();
+ return 0;
+}
+
+static HANDLE m_hLogData;
+static int m_locked;
+
+/* get_clip_grab() returns a pointer to the string in the system area.
+ get_clip_release() should be called ASAP after this. */
+
+char *get_clip_grab()
+{
+ HANDLE hWnd;
+ LPTSTR pLogData;
+
+ hWnd = NULL;
+ if (!OpenClipboard(hWnd)) {
+ return 0;
+ }
+
+ m_hLogData = GetClipboardData(CF_TEXT);
+
+ if (m_hLogData == NULL) {
+ CloseClipboard();
+ m_locked = 0;
+ return 0;
+ }
+ pLogData = (LPTSTR) GlobalLock(m_hLogData);
+
+ m_locked = 1;
+ return pLogData;
+}
+
+void get_clip_release()
+{
+ if (!m_locked)
+ return;
+ GlobalUnlock(m_hLogData);
+ CloseClipboard();
+ m_locked = 0;
+}
+#endif /* WIN_EX */
+#endif /* CAN_CUT_AND_PASTE */
+
+#if defined(WIN_EX)
+
+#ifndef WSABASEERR
+#define WSABASEERR 10000
+#endif
+
+#ifdef ENABLE_IPV6
+#define WSOCK_NAME "ws2_32"
+#else
+#define WSOCK_NAME "wsock32"
+#endif
+
+/*
+ * Description: the windows32 version of perror()
+ *
+ * Returns: a pointer to a static error
+ *
+ * Notes/Dependencies: I got this from
+ * comp.os.ms-windows.programmer.win32
+ */
+char *w32_strerror(DWORD ercode)
+{
+/* __declspec(thread) necessary if you will use multiple threads */
+#if defined(__CYGWIN__) || defined(__MINGW32__)
+ static char msg_buff[256];
+
+#else
+ __declspec(thread) static char msg_buff[256];
+#endif
+ HMODULE hModule;
+ int i, msg_type;
+ unsigned char *p, *q, tmp_buff[256];
+ DWORD rc;
+
+ hModule = NULL;
+ msg_type = FORMAT_MESSAGE_FROM_SYSTEM;
+ /* Fill message buffer with a default message in
+ * case FormatMessage fails
+ */
+ wsprintf(msg_buff, "Error %ld", ercode);
+
+ /*
+ * Special code for winsock error handling.
+ */
+ if (ercode > WSABASEERR) {
+ hModule = GetModuleHandle(WSOCK_NAME);
+ if (hModule)
+ msg_type = FORMAT_MESSAGE_FROM_HMODULE;
+ }
+ /*
+ * message handling. If not found in module, retry from system.
+ */
+ rc = FormatMessage(msg_type, hModule, ercode, LANG_NEUTRAL,
+ msg_buff, sizeof(msg_buff), NULL);
+
+ if (rc == 0 && msg_type == FORMAT_MESSAGE_FROM_HMODULE) {
+ FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, ercode,
+ LANG_NEUTRAL, msg_buff, sizeof(msg_buff), NULL);
+ }
+
+ strcpy((char *) tmp_buff, msg_buff);
+ p = q = tmp_buff;
+ i = 0;
+ while (*p) {
+ if (!(*p == '\n' || *p == '\r'))
+ msg_buff[i++] = *p;
+ p++;
+ }
+ msg_buff[i] = '\0';
+
+ return msg_buff;
+}
+
+#endif
+
+#if defined(SYSLOG_REQUESTED_URLS)
+/*
+ * syslog() interface
+ */
+void LYOpenlog(const char *banner)
+{
+ if (syslog_requested_urls) {
+ CTRACE((tfp, "LYOpenlog(%s)\n", NONNULL(banner)));
+#if defined(DJGPP)
+ openlog("lynx", LOG_PID | LOG_NDELAY, LOG_LOCAL5);
+#else
+ openlog("lynx", LOG_PID, LOG_LOCAL5);
+#endif
+
+ if (banner) {
+ syslog(LOG_INFO, "Session start:%s", banner);
+ } else {
+ syslog(LOG_INFO, "Session start");
+ }
+ }
+}
+
+static BOOLEAN looks_like_password(char *first,
+ char *last)
+{
+ BOOLEAN result = FALSE;
+
+ while (first <= last) {
+ if (*first == '/'
+ || *first == ':') {
+ result = FALSE;
+ break;
+ }
+ result = TRUE;
+ first++;
+ }
+ return result;
+}
+
+void LYSyslog(char *arg)
+{
+ char *colon1;
+ char *colon2;
+ char *atsign;
+
+ if (syslog_requested_urls) {
+
+ CTRACE((tfp, "LYSyslog %s\n", arg));
+
+ if (is_url(arg)) { /* proto://user:password@host/path:port */
+ /* ^this colon */
+ if ((colon1 = StrChr(arg, ':')) != 0
+ && !StrNCmp(colon1, "://", 3)
+ && (colon2 = StrChr(colon1 + 3, ':')) != 0
+ && (atsign = StrChr(colon1, '@')) != 0
+ && (colon2 < atsign)
+ && looks_like_password(colon2 + 1, atsign - 1)) {
+ char *buf = NULL;
+
+ StrAllocCopy(buf, arg);
+ buf[colon2 - arg + 1] = 0;
+ StrAllocCat(buf, "******");
+ StrAllocCat(buf, atsign);
+ syslog(LOG_INFO | LOG_LOCAL5, "%s", buf);
+ CTRACE((tfp, "...alter %s\n", buf));
+ FREE(buf);
+ return;
+ }
+ }
+ syslog(LOG_INFO | LOG_LOCAL5, "%s", NONNULL(arg));
+ }
+}
+
+void LYCloselog(void)
+{
+ if (syslog_requested_urls) {
+ syslog(LOG_INFO, "Session over");
+ closelog();
+ }
+}
+
+#endif /* SYSLOG_REQUESTED_URLS */
+
+#if defined(WIN_EX) || defined(__CYGWIN__) /* 2000/03/07 (Tue) 17:17:46 */
+
+#define IS_SEP(p) ((p == '\\') || (p == '/') || (p == ':'))
+
+static char *black_list[] =
+{
+ "con",
+ "prn",
+ "clock$",
+ "config$",
+ NULL
+};
+
+static int is_device(char *fname)
+{
+ HANDLE fileHandle;
+ DWORD val;
+ int i;
+
+ i = 0;
+ while (black_list[i] != NULL) {
+ if (strcasecomp(fname, black_list[i]) == 0) {
+ return 1; /* device file */
+ }
+ i++;
+ }
+
+ fileHandle = CreateFile(fname, 0, 0, 0, OPEN_EXISTING, 0, 0);
+
+ if (fileHandle == INVALID_HANDLE_VALUE) {
+ return 0; /* normal file */
+ } else {
+ val = GetFileType(fileHandle);
+ switch (val) {
+ case 1:
+ val = 0;
+ break;
+ case 2:
+ val = 1; /* device file */
+ break;
+ default:
+ val = 0;
+ break;
+ }
+
+ CloseHandle(fileHandle);
+ }
+ return val;
+}
+
+static char *device_list[] =
+{
+ "con",
+ "nul",
+ "aux",
+ "prn",
+ NULL
+};
+
+int unsafe_filename(const char *fname)
+{
+ int i, len, sum;
+ char *cp;
+ char *save;
+
+ i = 0;
+ while (device_list[i] != NULL) {
+ if (strcasecomp(fname, device_list[i]) == 0) {
+ return 0; /* device file (open OK) */
+ }
+ i++;
+ }
+
+ save = cp = strdup(fname);
+
+ while (*cp) {
+ if (IS_SJIS_HI1(UCH(*cp)) || IS_SJIS_HI2(UCH(*cp)))
+ cp += 2; /* KANJI skip */
+ if (IS_SEP(*cp)) {
+ *cp = '\0';
+ }
+ cp++;
+ }
+
+ sum = 0;
+ cp = save;
+ len = (int) strlen(fname);
+ while (cp < (save + len)) {
+ if (*cp == '\0') {
+ cp++;
+ } else {
+ char *q;
+
+ q = StrChr(cp, '.');
+ if (q)
+ *q = '\0';
+ if (is_device(cp)) {
+ sum++;
+ break;
+ }
+ if (q)
+ cp = q + 1;
+ while (*cp)
+ cp++;
+ }
+ }
+ free(save);
+
+ return (sum != 0);
+}
+
+FILE *safe_fopen(const char *fname, const char *mode)
+{
+ if (unsafe_filename(fname)) {
+ return (FILE *) NULL;
+ } else {
+ return fopen(fname, mode);
+ }
+}
+
+#endif /* defined(WIN_EX) || defined(__CYGWIN__) */