/*
* Write out a list of filters.
*
* On success, "*pref_path_return" is set to NULL.
* On error, "*pref_path_return" is set to point to the pathname of
* the file we tried to read - it should be freed by our caller -
* and "*errno_return" is set to the error.
*/
void
save_filter_list(filter_list_type_t list_type, char **pref_path_return,
int *errno_return)
{
const gchar *ff_name;
gchar *ff_path, *ff_path_new;
GList *fl;
GList *flpp;
filter_def *filt;
FILE *ff;
guchar *p, c;
*pref_path_return = NULL; /* assume no error */
switch (list_type) {
case CFILTER_LIST:
ff_name = CFILTER_FILE_NAME;
fl = capture_filters;
break;
case DFILTER_LIST:
ff_name = DFILTER_FILE_NAME;
fl = display_filters;
break;
default:
g_assert_not_reached();
return;
}
ff_path = get_persconffile_path(ff_name, TRUE);
/* Write to "XXX.new", and rename if that succeeds.
That means we don't trash the file if we fail to write it out
completely. */
ff_path_new = g_strdup_printf("%s.new", ff_path);
if ((ff = ws_fopen(ff_path_new, "w")) == NULL) {
*pref_path_return = ff_path;
*errno_return = errno;
g_free(ff_path_new);
return;
}
flpp = g_list_first(fl);
while (flpp) {
filt = (filter_def *) flpp->data;
/* Write out the filter name as a quoted string; escape any quotes
or backslashes. */
putc('"', ff);
for (p = (guchar *)filt->name; (c = *p) != '\0'; p++) {
if (c == '"' || c == '\\')
putc('\\', ff);
putc(c, ff);
}
putc('"', ff);
/* Separate the filter name and value with a space. */
putc(' ', ff);
/* Write out the filter expression and a newline. */
fprintf(ff, "%s\n", filt->strval);
if (ferror(ff)) {
*pref_path_return = ff_path;
*errno_return = errno;
fclose(ff);
ws_unlink(ff_path_new);
g_free(ff_path_new);
return;
}
flpp = flpp->next;
}
if (fclose(ff) == EOF) {
*pref_path_return = ff_path;
*errno_return = errno;
ws_unlink(ff_path_new);
g_free(ff_path_new);
return;
}
#ifdef _WIN32
/* ANSI C doesn't say whether "rename()" removes the target if it
exists; the Win32 call to rename files doesn't do so, which I
infer is the reason why the MSVC++ "rename()" doesn't do so.
We must therefore remove the target file first, on Windows.
XXX - ws_rename() should be ws_stdio_rename() on Windows,
and ws_stdio_rename() uses MoveFileEx() with MOVEFILE_REPLACE_EXISTING,
so it should remove the target if it exists, so this stuff
shouldn't be necessary. Perhaps it dates back to when we were
calling rename(), with that being a wrapper around Microsoft's
_rename(), which didn't remove the target. */
if (ws_remove(ff_path) < 0 && errno != ENOENT) {
/* It failed for some reason other than "it's not there"; if
it's not there, we don't need to remove it, so we just
drive on. */
*pref_path_return = ff_path;
*errno_return = errno;
ws_unlink(ff_path_new);
g_free(ff_path_new);
return;
}
#endif
if (ws_rename(ff_path_new, ff_path) < 0) {
*pref_path_return = ff_path;
*errno_return = errno;
ws_unlink(ff_path_new);
g_free(ff_path_new);
return;
}
g_free(ff_path_new);
g_free(ff_path);
}
/*
* Write out a list of disabled protocols.
*
* On success, "*pref_path_return" is set to NULL.
* On error, "*pref_path_return" is set to point to the pathname of
* the file we tried to read - it should be freed by our caller -
* and "*errno_return" is set to the error.
*/
void
save_disabled_protos_list(char **pref_path_return, int *errno_return)
{
gchar *ff_path, *ff_path_new;
FILE *ff;
gint i;
protocol_t *protocol;
void *cookie;
*pref_path_return = NULL; /* assume no error */
ff_path = get_persconffile_path(PROTOCOLS_FILE_NAME, TRUE, TRUE);
/* Write to "XXX.new", and rename if that succeeds.
That means we don't trash the file if we fail to write it out
completely. */
ff_path_new = g_strdup_printf("%s.new", ff_path);
if ((ff = ws_fopen(ff_path_new, "w")) == NULL) {
*pref_path_return = ff_path;
*errno_return = errno;
g_free(ff_path_new);
return;
}
/* Iterate over all the protocols */
for (i = proto_get_first_protocol(&cookie); i != -1;
i = proto_get_next_protocol(&cookie)) {
if (!proto_can_toggle_protocol(i)) {
continue;
}
protocol = find_protocol_by_id(i);
if (proto_is_protocol_enabled(protocol)) {
continue;
}
/* Write out the protocol name. */
fprintf(ff, "%s\n", proto_get_protocol_filter_name(i));
}
if (fclose(ff) == EOF) {
*pref_path_return = ff_path;
*errno_return = errno;
ws_unlink(ff_path_new);
g_free(ff_path_new);
return;
}
#ifdef _WIN32
/* ANSI C doesn't say whether "rename()" removes the target if it
exists; the Win32 call to rename files doesn't do so, which I
infer is the reason why the MSVC++ "rename()" doesn't do so.
We must therefore remove the target file first, on Windows.
XXX - ws_rename() should be ws_stdio_rename() on Windows,
and ws_stdio_rename() uses MoveFileEx() with MOVEFILE_REPLACE_EXISTING,
so it should remove the target if it exists, so this stuff
shouldn't be necessary. Perhaps it dates back to when we were
calling rename(), with that being a wrapper around Microsoft's
_rename(), which didn't remove the target. */
if (ws_remove(ff_path) < 0 && errno != ENOENT) {
/* It failed for some reason other than "it's not there"; if
it's not there, we don't need to remove it, so we just
drive on. */
*pref_path_return = ff_path;
*errno_return = errno;
ws_unlink(ff_path_new);
g_free(ff_path_new);
return;
}
#endif
if (ws_rename(ff_path_new, ff_path) < 0) {
*pref_path_return = ff_path;
*errno_return = errno;
ws_unlink(ff_path_new);
g_free(ff_path_new);
return;
}
g_free(ff_path_new);
g_free(ff_path);
}
