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Diffstat (limited to 'third_party/popt/poptconfig.c')
-rw-r--r--third_party/popt/poptconfig.c582
1 files changed, 582 insertions, 0 deletions
diff --git a/third_party/popt/poptconfig.c b/third_party/popt/poptconfig.c
new file mode 100644
index 0000000..f0a92e0
--- /dev/null
+++ b/third_party/popt/poptconfig.c
@@ -0,0 +1,582 @@
+/** \ingroup popt
+ * \file popt/poptconfig.c
+ */
+
+/* (C) 1998-2002 Red Hat, Inc. -- Licensing details are in the COPYING
+ file accompanying popt source distributions, available from
+ ftp://ftp.rpm.org/pub/rpm/dist. */
+
+#include "system.h"
+#include "poptint.h"
+#include <sys/stat.h>
+
+#if defined(HAVE_FNMATCH_H)
+#include <fnmatch.h>
+
+#if defined(__LCLINT__)
+/*@-declundef -exportheader -incondefs -protoparammatch -redecl -type @*/
+extern int fnmatch (const char *__pattern, const char *__name, int __flags)
+ /*@*/;
+/*@=declundef =exportheader =incondefs =protoparammatch =redecl =type @*/
+#endif /* __LCLINT__ */
+#endif
+
+#if defined(HAVE_GLOB_H)
+#include <glob.h>
+
+#if defined(__LCLINT__)
+/*@-declundef -exportheader -incondefs -protoparammatch -redecl -type @*/
+extern int glob (const char *__pattern, int __flags,
+ /*@null@*/ int (*__errfunc) (const char *, int),
+ /*@out@*/ glob_t *__pglob)
+ /*@globals errno, fileSystem @*/
+ /*@modifies *__pglob, errno, fileSystem @*/;
+
+/* XXX only annotation is a white lie */
+extern void globfree (/*@only@*/ glob_t *__pglob)
+ /*@modifies *__pglob @*/;
+
+/* XXX _GNU_SOURCE ifdef and/or retrofit is needed for portability. */
+extern int glob_pattern_p (const char *__pattern, int __quote)
+ /*@*/;
+/*@=declundef =exportheader =incondefs =protoparammatch =redecl =type @*/
+#endif /* __LCLINT__ */
+
+#if !defined(__GLIBC__)
+/* Return nonzero if PATTERN contains any metacharacters.
+ Metacharacters can be quoted with backslashes if QUOTE is nonzero. */
+static int
+glob_pattern_p (const char * pattern, int quote)
+ /*@*/
+{
+ const char * p;
+ int open = 0;
+
+ for (p = pattern; *p != '\0'; ++p)
+ switch (*p) {
+ case '?':
+ case '*':
+ return 1;
+ /*@notreached@*/ /*@switchbreak@*/ break;
+ case '\\':
+ if (quote && p[1] != '\0')
+ ++p;
+ /*@switchbreak@*/ break;
+ case '[':
+ open = 1;
+ /*@switchbreak@*/ break;
+ case ']':
+ if (open)
+ return 1;
+ /*@switchbreak@*/ break;
+ }
+ return 0;
+}
+#endif /* !defined(__GLIBC__) */
+
+/*@unchecked@*/
+static int poptGlobFlags = 0;
+
+static int poptGlob_error(/*@unused@*/ UNUSED(const char * epath),
+ /*@unused@*/ UNUSED(int eerrno))
+ /*@*/
+{
+ return 1;
+}
+#endif /* HAVE_GLOB_H */
+
+/**
+ * Return path(s) from a glob pattern.
+ * @param con context
+ * @param pattern glob pattern
+ * @retval *acp no. of paths
+ * @retval *avp array of paths
+ * @return 0 on success
+ */
+static int poptGlob(/*@unused@*/ UNUSED(poptContext con), const char * pattern,
+ /*@out@*/ int * acp, /*@out@*/ const char *** avp)
+ /*@modifies *acp, *avp @*/
+{
+ const char * pat = pattern;
+ int rc = 0; /* assume success */
+
+ /* XXX skip the attention marker. */
+ if (pat[0] == '@' && pat[1] != '(')
+ pat++;
+
+#if defined(HAVE_GLOB_H)
+ if (glob_pattern_p(pat, 0)) {
+ glob_t _g, *pglob = &_g;
+
+ if (!glob(pat, poptGlobFlags, poptGlob_error, pglob)) {
+ if (acp) {
+ *acp = (int) pglob->gl_pathc;
+ pglob->gl_pathc = 0;
+ }
+ if (avp) {
+/*@-onlytrans@*/
+ *avp = (const char **) pglob->gl_pathv;
+/*@=onlytrans@*/
+ pglob->gl_pathv = NULL;
+ }
+/*@-nullstate@*/
+ globfree(pglob);
+/*@=nullstate@*/
+ } else
+ rc = POPT_ERROR_ERRNO;
+ } else
+#endif /* HAVE_GLOB_H */
+ {
+ if (acp)
+ *acp = 1;
+ if (avp && (*avp = calloc((size_t)(1 + 1), sizeof (**avp))) != NULL)
+ (*avp)[0] = xstrdup(pat);
+ }
+
+ return rc;
+}
+
+/*@access poptContext @*/
+
+int poptSaneFile(const char * fn)
+{
+ struct stat sb;
+ uid_t uid = getuid();
+
+ if (stat(fn, &sb) == -1)
+ return 1;
+ if ((uid_t)sb.st_uid != uid)
+ return 0;
+ if (!S_ISREG(sb.st_mode))
+ return 0;
+/*@-bitwisesigned@*/
+ if (sb.st_mode & (S_IWGRP|S_IWOTH))
+ return 0;
+/*@=bitwisesigned@*/
+ return 1;
+}
+
+int poptReadFile(const char * fn, char ** bp, size_t * nbp, int flags)
+{
+ int fdno;
+ char * b = NULL;
+ off_t nb = 0;
+ char * s, * t, * se;
+ int rc = POPT_ERROR_ERRNO; /* assume failure */
+
+ fdno = open(fn, O_RDONLY);
+ if (fdno < 0)
+ goto exit;
+
+ if ((nb = lseek(fdno, 0, SEEK_END)) == (off_t)-1
+ || lseek(fdno, 0, SEEK_SET) == (off_t)-1
+ || (b = calloc(sizeof(*b), (size_t)nb + 1)) == NULL
+ || read(fdno, (char *)b, (size_t)nb) != (ssize_t)nb)
+ {
+ int oerrno = errno;
+ (void) close(fdno);
+ errno = oerrno;
+ goto exit;
+ }
+ if (close(fdno) == -1)
+ goto exit;
+ if (b == NULL) {
+ rc = POPT_ERROR_MALLOC;
+ goto exit;
+ }
+ rc = 0;
+
+ /* Trim out escaped newlines. */
+/*@-bitwisesigned@*/
+ if (flags & POPT_READFILE_TRIMNEWLINES)
+/*@=bitwisesigned@*/
+ {
+ for (t = b, s = b, se = b + nb; *s && s < se; s++) {
+ switch (*s) {
+ case '\\':
+ if (s[1] == '\n') {
+ s++;
+ continue;
+ }
+ /*@fallthrough@*/
+ default:
+ *t++ = *s;
+ /*@switchbreak@*/ break;
+ }
+ }
+ *t++ = '\0';
+ nb = (off_t)(t - b);
+ }
+
+exit:
+ if (rc != 0) {
+/*@-usedef@*/
+ if (b)
+ free(b);
+/*@=usedef@*/
+ b = NULL;
+ nb = 0;
+ }
+ if (bp)
+ *bp = b;
+/*@-usereleased@*/
+ else if (b)
+ free(b);
+/*@=usereleased@*/
+ if (nbp)
+ *nbp = (size_t)nb;
+/*@-compdef -nullstate @*/ /* XXX cannot annotate char ** correctly */
+ return rc;
+/*@=compdef =nullstate @*/
+}
+
+/**
+ * Check for application match.
+ * @param con context
+ * @param s config application name
+ * return 0 if config application matches
+ */
+static int configAppMatch(poptContext con, const char * s)
+ /*@*/
+{
+ int rc = 1;
+
+ if (con->appName == NULL) /* XXX can't happen. */
+ return rc;
+
+#if defined(HAVE_GLOB_H) && defined(HAVE_FNMATCH_H)
+ if (glob_pattern_p(s, 1)) {
+/*@-bitwisesigned@*/
+ static int flags = FNM_PATHNAME | FNM_PERIOD;
+#ifdef FNM_EXTMATCH
+ flags |= FNM_EXTMATCH;
+#endif
+/*@=bitwisesigned@*/
+ rc = fnmatch(s, con->appName, flags);
+ } else
+#endif
+ rc = strcmp(s, con->appName);
+ return rc;
+}
+
+/*@-compmempass@*/ /* FIX: item->option.longName kept, not dependent. */
+static int poptConfigLine(poptContext con, char * line)
+ /*@globals fileSystem, internalState @*/
+ /*@modifies con, fileSystem, internalState @*/
+{
+ char *b = NULL;
+ size_t nb = 0;
+ char * se = line;
+ const char * appName;
+ const char * entryType;
+ const char * opt;
+ struct poptItem_s item_buf;
+ poptItem item = &item_buf;
+ int i, j;
+ int rc = POPT_ERROR_BADCONFIG;
+
+ if (con->appName == NULL)
+ goto exit;
+
+ memset(item, 0, sizeof(*item));
+
+ appName = se;
+ while (*se != '\0' && !_isspaceptr(se)) se++;
+ if (*se == '\0')
+ goto exit;
+ else
+ *se++ = '\0';
+
+ if (configAppMatch(con, appName)) goto exit;
+
+ while (*se != '\0' && _isspaceptr(se)) se++;
+ entryType = se;
+ while (*se != '\0' && !_isspaceptr(se)) se++;
+ if (*se != '\0') *se++ = '\0';
+
+ while (*se != '\0' && _isspaceptr(se)) se++;
+ if (*se == '\0') goto exit;
+ opt = se;
+ while (*se != '\0' && !_isspaceptr(se)) se++;
+ if (opt[0] == '-' && *se == '\0') goto exit;
+ if (*se != '\0') *se++ = '\0';
+
+ while (*se != '\0' && _isspaceptr(se)) se++;
+ if (opt[0] == '-' && *se == '\0') goto exit;
+
+/*@-temptrans@*/ /* FIX: line alias is saved */
+ if (opt[0] == '-' && opt[1] == '-')
+ item->option.longName = opt + 2;
+ else if (opt[0] == '-' && opt[2] == '\0')
+ item->option.shortName = opt[1];
+ else {
+ const char * fn = opt;
+
+ /* XXX handle globs and directories in fn? */
+ if ((rc = poptReadFile(fn, &b, &nb, POPT_READFILE_TRIMNEWLINES)) != 0)
+ goto exit;
+ if (b == NULL || nb == 0)
+ goto exit;
+
+ /* Append remaining text to the interpolated file option text. */
+ if (*se != '\0') {
+ size_t nse = strlen(se) + 1;
+ if ((b = realloc(b, (nb + nse))) == NULL) /* XXX can't happen */
+ goto exit;
+ (void) stpcpy( stpcpy(&b[nb-1], " "), se);
+ nb += nse;
+ }
+ se = b;
+
+ /* Use the basename of the path as the long option name. */
+ { const char * longName = strrchr(fn, '/');
+ if (longName != NULL)
+ longName++;
+ else
+ longName = fn;
+ if (longName == NULL) /* XXX can't happen. */
+ goto exit;
+ /* Single character basenames are treated as short options. */
+ if (longName[1] != '\0')
+ item->option.longName = longName;
+ else
+ item->option.shortName = longName[0];
+ }
+ }
+/*@=temptrans@*/
+
+ if (poptParseArgvString(se, &item->argc, &item->argv)) goto exit;
+
+/*@-modobserver@*/
+ item->option.argInfo = POPT_ARGFLAG_DOC_HIDDEN;
+ for (i = 0, j = 0; i < item->argc; i++, j++) {
+ const char * f;
+ if (!strncmp(item->argv[i], "--POPTdesc=", sizeof("--POPTdesc=")-1)) {
+ f = item->argv[i] + sizeof("--POPTdesc=");
+ if (f[0] == '$' && f[1] == '"') f++;
+ item->option.descrip = f;
+ item->option.argInfo &= ~POPT_ARGFLAG_DOC_HIDDEN;
+ j--;
+ } else
+ if (!strncmp(item->argv[i], "--POPTargs=", sizeof("--POPTargs=")-1)) {
+ f = item->argv[i] + sizeof("--POPTargs=");
+ if (f[0] == '$' && f[1] == '"') f++;
+ item->option.argDescrip = f;
+ item->option.argInfo &= ~POPT_ARGFLAG_DOC_HIDDEN;
+ item->option.argInfo |= POPT_ARG_STRING;
+ j--;
+ } else
+ if (j != i)
+ item->argv[j] = item->argv[i];
+ }
+ if (j != i) {
+ item->argv[j] = NULL;
+ item->argc = j;
+ }
+/*@=modobserver@*/
+
+/*@-nullstate@*/ /* FIX: item->argv[] may be NULL */
+ if (!strcmp(entryType, "alias"))
+ rc = poptAddItem(con, item, 0);
+ else if (!strcmp(entryType, "exec"))
+ rc = poptAddItem(con, item, 1);
+/*@=nullstate@*/
+exit:
+ rc = 0; /* XXX for now, always return success */
+ if (b)
+ free(b);
+ return rc;
+}
+/*@=compmempass@*/
+
+int poptReadConfigFile(poptContext con, const char * fn)
+{
+ char * b = NULL, *be;
+ size_t nb = 0;
+ const char *se;
+ char *t, *te;
+ int rc;
+ int xx;
+
+ if ((rc = poptReadFile(fn, &b, &nb, POPT_READFILE_TRIMNEWLINES)) != 0)
+ return (errno == ENOENT ? 0 : rc);
+ if (b == NULL || nb == 0)
+ return POPT_ERROR_BADCONFIG;
+
+ if ((t = malloc(nb + 1)) == NULL)
+ goto exit;
+ te = t;
+
+ be = (b + nb);
+ for (se = b; se < be; se++) {
+ switch (*se) {
+ case '\n':
+ *te = '\0';
+ te = t;
+ while (*te && _isspaceptr(te)) te++;
+ if (*te && *te != '#')
+ xx = poptConfigLine(con, te);
+ /*@switchbreak@*/ break;
+/*@-usedef@*/ /* XXX *se may be uninitialized */
+ case '\\':
+ *te = *se++;
+ /* \ at the end of a line does not insert a \n */
+ if (se < be && *se != '\n') {
+ te++;
+ *te++ = *se;
+ }
+ /*@switchbreak@*/ break;
+ default:
+ *te++ = *se;
+ /*@switchbreak@*/ break;
+/*@=usedef@*/
+ }
+ }
+
+ free(t);
+ rc = 0;
+
+exit:
+ if (b)
+ free(b);
+ return rc;
+}
+
+int poptReadConfigFiles(poptContext con, const char * paths)
+{
+ char * buf = (paths ? xstrdup(paths) : NULL);
+ const char * p;
+ char * pe;
+ int rc = 0; /* assume success */
+
+ for (p = buf; p != NULL && *p != '\0'; p = pe) {
+ const char ** av = NULL;
+ int ac = 0;
+ int i;
+ int xx;
+
+ /* locate start of next path element */
+ pe = strchr(p, ':');
+ if (pe != NULL && *pe == ':')
+ *pe++ = '\0';
+ else
+ pe = (char *) (p + strlen(p));
+
+ xx = poptGlob(con, p, &ac, &av);
+
+ /* work-off each resulting file from the path element */
+ for (i = 0; i < ac; i++) {
+ const char * fn = av[i];
+ if (av[i] == NULL) /* XXX can't happen */
+ /*@innercontinue@*/ continue;
+ /* XXX should '@' attention be pushed into poptReadConfigFile? */
+ if (p[0] == '@' && p[1] != '(') {
+ if (fn[0] == '@' && fn[1] != '(')
+ fn++;
+ xx = poptSaneFile(fn);
+ if (!xx && rc == 0)
+ rc = POPT_ERROR_BADCONFIG;
+ /*@innercontinue@*/ continue;
+ }
+ xx = poptReadConfigFile(con, fn);
+ if (xx && rc == 0)
+ rc = xx;
+ free((void *)av[i]);
+ av[i] = NULL;
+ }
+ free(av);
+ av = NULL;
+ }
+
+/*@-usedef@*/
+ if (buf)
+ free(buf);
+/*@=usedef@*/
+
+ return rc;
+}
+
+int poptReadDefaultConfig(poptContext con, /*@unused@*/ UNUSED(int useEnv))
+{
+ static const char _popt_sysconfdir[] = POPT_SYSCONFDIR "/popt";
+ static const char _popt_etc[] = "/etc/popt";
+ char * home;
+ struct stat sb;
+ int rc = 0; /* assume success */
+
+ if (con->appName == NULL) goto exit;
+
+ if (strcmp(_popt_sysconfdir, _popt_etc)) {
+ rc = poptReadConfigFile(con, _popt_sysconfdir);
+ if (rc) goto exit;
+ }
+
+ rc = poptReadConfigFile(con, _popt_etc);
+ if (rc) goto exit;
+
+#if defined(HAVE_GLOB_H)
+ if (!stat("/etc/popt.d", &sb) && S_ISDIR(sb.st_mode)) {
+ const char ** av = NULL;
+ int ac = 0;
+ int i;
+
+ if ((rc = poptGlob(con, "/etc/popt.d/*", &ac, &av)) == 0) {
+ for (i = 0; rc == 0 && i < ac; i++) {
+ const char * fn = av[i];
+ if (fn == NULL || strstr(fn, ".rpmnew") || strstr(fn, ".rpmsave"))
+ continue;
+ if (!stat(fn, &sb)) {
+ if (!S_ISREG(sb.st_mode) && !S_ISLNK(sb.st_mode))
+ continue;
+ }
+ rc = poptReadConfigFile(con, fn);
+ free((void *)av[i]);
+ av[i] = NULL;
+ }
+ free(av);
+ av = NULL;
+ }
+ }
+ if (rc) goto exit;
+#endif
+
+ if ((home = getenv("HOME"))) {
+ char * fn = malloc(strlen(home) + 20);
+ if (fn != NULL) {
+ (void) stpcpy(stpcpy(fn, home), "/.popt");
+ rc = poptReadConfigFile(con, fn);
+ free(fn);
+ } else
+ rc = POPT_ERROR_ERRNO;
+ if (rc) goto exit;
+ }
+
+exit:
+ return rc;
+}
+
+poptContext
+poptFini(poptContext con)
+{
+ return poptFreeContext(con);
+}
+
+poptContext
+poptInit(int argc, const char ** argv,
+ const struct poptOption * options, const char * configPaths)
+{
+ poptContext con = NULL;
+ const char * argv0;
+
+ if (argv == NULL || argv[0] == NULL || options == NULL)
+ return con;
+
+ if ((argv0 = strrchr(argv[0], '/')) != NULL) argv0++;
+ else argv0 = argv[0];
+
+ con = poptGetContext(argv0, argc, (const char **)argv, options, 0);
+ if (con != NULL&& poptReadConfigFiles(con, configPaths))
+ con = poptFini(con);
+
+ return con;
+}
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