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/* $LynxId: LYSession.c,v 1.12 2018/07/08 15:22:44 tom Exp $ */
#include <LYSession.h>
#include <LYLeaks.h>
#include <LYUtils.h>
#include <LYStrings.h>
#include <LYHistory.h>
#include <LYGlobalDefs.h>
#include <LYMainLoop.h>
#include <GridText.h>
#ifdef USE_SESSIONS
/* Example of how a session file may look:
*/
/* # lynx session
* / files
* / hereby
* / reduce
* g file://localhost/COPYRIGHT
* g https://lynx.invisible-island.net
* h 1 -1 file://localhost/COPYRIGHT Entry into main screen
* h 1 0 LYNXCACHE:/ Cache Jar
* h 1 16 file://localhost/usr/local/share/lynx_help/Lynx_users_guide.html#Cache Lynx Users Guide v2.8.6
* h 1 -1 file://localhost/COPYRIGHT Entry into main screen
* h 1 2 file://localhost/tmp/lynxmSefvcbXes/L12110-6407TMP.html#current Visited Links Page
* h 1 -1 file://localhost/COPYRIGHT Entry into main screen
* h 1 -1 LYNXMESSAGES:/ Your recent statusline messages
* V 0 file://localhost/COPYRIGHT Entry into main screen
* V 3 file://localhost/usr/local/share/lynx_help/Lynx_users_guide.html#Bookmarks Lynx Users Guide v2.8.6
*/
static char *get_filename(char *given_name)
{
char *actual_filename = given_name;
/*
* If the specific "-sessionin" or "-sessionout" value is not given,
* try the "-session" value (if the AUTO_SESSION configuration is set).
* Finally try the SESSION_FILE configuration value.
*/
if (isEmpty(actual_filename)) {
actual_filename = session_file;
if (isEmpty(actual_filename)) {
if (LYAutoSession) {
actual_filename = LYSessionFile;
}
}
}
return actual_filename;
}
/* Restore session from file, pretty slow, but it should be fine
* for everyday, normal use.
*/
void RestoreSession(void)
{
char *my_filename = get_filename(sessionin_file);
FILE *fp;
char *buffer = 0;
DocInfo doc;
VisitedLink *vl;
int i = 0;
short errors = 10; /* how many syntax errors are allowed in
* session file before aborting. */
char *value1, *value2, *rsline, *linktext, *rslevel;
memset(&doc, 0, sizeof(doc));
/*
* This should be done only once, here: iff USE_SESSIONS is defined or:
* in mainloop(), otherwise history entries are lost
*/
nhist = 0;
if (my_filename == NULL) {
/* nothing to do, so exit */
return;
}
CTRACE((tfp, "RestoreSession %s\n", my_filename));
SetDefaultMode(O_TEXT);
if ((fp = fopen(my_filename, TXT_R)) != NULL) {
/*
* This should be safe, entries are added to lynx until memory is
* exhausted
*/
while (LYSafeGets(&buffer, fp) != 0) {
LYTrimNewline(buffer);
if (*buffer == '/') {
#ifdef SEARCH_OUT_SESSION
if ((value1 = StrChr(buffer, ' ')) == 0) {
continue;
} else {
value1++;
HTAddSearchQuery(value1);
}
#endif /* SEARCH_OUT_SESSION */
} else if (*buffer == 'g') {
#ifdef GOTOURL_OUT_SESSION
if ((value1 = StrChr(buffer, ' ')) == 0)
continue;
else {
value1++;
HTAddGotoURL(value1);
}
#endif /* GOTOURL_OUT_SESSION */
} else if (*buffer == 'h') {
#ifdef HISTORY_OUT_SESSION
if ((rsline = StrChr(buffer, ' ')) == 0)
continue;
else {
rsline++;
if ((linktext = StrChr(rsline, ' ')) == 0)
continue;
else
*linktext++ = 0;
if ((value1 = StrChr(linktext, ' ')) == 0)
continue;
else
*value1++ = 0;
if ((value2 = StrChr(value1, '\t')) != 0) {
*value2++ = 0;
doc.line = atoi(rsline);
doc.link = atoi(linktext);
StrAllocCopy(doc.address, value1);
StrAllocCopy(doc.title, value2);
LYpush(&doc, TRUE);
}
}
#endif /* HISTORY_OUT_SESSION */
} else if (*buffer == 'V') {
#ifdef VLINK_OUT_SESSION
if ((rslevel = StrChr(buffer, ' ')) == 0)
continue;
else {
rslevel++;
if ((value1 = StrChr(rslevel, ' ')) == 0)
continue;
else
*value1++ = 0;
if ((value2 = StrChr(value1, '\t')) != 0) {
*value2++ = 0;
StrAllocCopy(doc.address, value1);
StrAllocCopy(doc.title, value2);
LYAddVisitedLink(&doc);
vl = (VisitedLink *)
HTList_objectAt(Visited_Links, i);
if (vl != NULL) {
vl->level = atoi(rslevel);
i++;
}
}
}
#endif /* VLINK_OUT_SESSION */
} else if (*buffer == '#') {
/* This is comment; ignore it */
continue;
} else if (errors-- < 0) {
FREE(buffer);
break;
} else
continue;
}
LYCloseOutput(fp);
}
SetDefaultMode(O_BINARY);
}
/*
* Save session to file, overwriting one.
*/
void SaveSession(void)
{
char *my_filename = get_filename(sessionout_file);
FILE *fp;
VisitedLink *vl;
int i, j, k;
if (my_filename == NULL) {
/* nothing to do, so exit */
return;
}
CTRACE((tfp, "SaveSession %s\n", my_filename));
SetDefaultMode(O_TEXT);
if ((fp = fopen(my_filename, TXT_W)) != NULL) {
fprintf(fp, "# lynx session\n"); /* @@@ simple for now */
/* Note use of session_limit, the most recent entries in list,
* from the end of list, are saved.
*/
#ifdef SEARCH_IN_SESSION
k = HTList_count(search_queries);
if (k > session_limit)
j = k - session_limit;
else
j = 0;
for (i = j; i < k; i++) {
fprintf(fp, "/ ");
fputs((char *) HTList_objectAt(search_queries, i), fp);
fprintf(fp, "\n");
}
#endif /* SEARCH_IN_SESSION */
#ifdef GOTOURL_IN_SESSION
k = HTList_count(Goto_URLs);
if (k > session_limit)
j = k - session_limit;
else
j = 0;
for (i = j; i < k; i++) {
fprintf(fp, "g ");
fputs((char *) HTList_objectAt(Goto_URLs, i), fp);
fprintf(fp, "\n");
}
#endif /* GOTOURL_IN_SESSION */
#ifdef HISTORY_IN_SESSION
k = nhist + nhist_extra;
if (k > session_limit)
j = k - session_limit;
else
j = 0;
for (i = j; i < k; i++) {
fprintf(fp, "h %d %d ", HDOC(i).line, HDOC(i).link);
fputs(HDOC(i).address, fp);
fprintf(fp, "\t");
fputs(HDOC(i).title, fp);
fprintf(fp, "\n");
}
#endif /* HISTORY_IN_SESSION */
#ifdef VLINK_IN_SESSION
k = HTList_count(Visited_Links);
if (k > session_limit)
j = k - session_limit;
else
j = 0;
for (i = j; i < k; i++) {
vl = (VisitedLink *) HTList_objectAt(Visited_Links, i);
if (vl != NULL) {
fprintf(fp, "V %d ", vl->level);
fputs(vl->address, fp);
fprintf(fp, "\t");
fputs(vl->title, fp);
fprintf(fp, "\n");
}
}
#endif /* VLINK_IN_SESSION */
LYCloseOutput(fp);
}
SetDefaultMode(O_BINARY);
}
#endif /* USE_SESSIONS */
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