}
+struct HistoryEraserCallBackData {
+ char *tempfilename; /* name of temp file being patched */
+ char *stop_when; /* stop when we hit this uuid */
+ int done; /* set to nonzero when we're done patching */
+};
+
+
+
+/*
+ * MIME Parser callback for wiki_rev()
+ *
+ * The "filename" field will contain a memo field. All we have to do is decode
+ * the base64 and output it. The data is already in a delimited format suitable
+ * for our client protocol.
+ */
+void wiki_rev_callback(char *name, char *filename, char *partnum, char *disp,
+ void *content, char *cbtype, char *cbcharset, size_t length,
+ char *encoding, char *cbid, void *cbuserdata)
+{
+ struct HistoryEraserCallBackData *hecbd = (struct HistoryEraserCallBackData *)cbuserdata;
+ char memo[1024];
+ char this_rev[256];
+ FILE *fp;
+ char *ptr = NULL;
+ char buf[1024];
+
+ /* Did a previous callback already indicate that we've reached our target uuid?
+ * If so, don't process anything else.
+ */
+ if (hecbd->done) {
+ return;
+ }
+
+ CtdlDecodeBase64(memo, filename, strlen(filename));
+ extract_token(this_rev, memo, 0, '|', sizeof this_rev);
+ CtdlLogPrintf(CTDL_DEBUG, "callback found rev: %s\n", this_rev);
+
+ /* Perform the patch */
+ fp = popen("patch -f -s -p0 >/dev/null 2>/dev/null", "w");
+ if (fp) {
+ /* Replace the filenames in the patch with the tempfilename we're actually tweaking */
+ fprintf(fp, "--- %s\n", hecbd->tempfilename);
+ fprintf(fp, "+++ %s\n", hecbd->tempfilename);
+
+ ptr = (char *)content;
+ int linenum = 0;
+ do {
+ ++linenum;
+ ptr = memreadline(ptr, buf, sizeof buf);
+ if (*ptr != 0) {
+ if (linenum <= 2) {
+ /* skip the first two lines; they contain bogus filenames */
+ }
+ else {
+ fprintf(fp, "%s\n", buf);
+ }
+ }
+ } while ((*ptr != 0) && ((int)ptr < ((int)content + length)));
+ pclose(fp);
+ }
+
+ if (!strcasecmp(this_rev, hecbd->stop_when)) {
+ CtdlLogPrintf(CTDL_DEBUG, "Found our target rev. Stopping!\n");
+ hecbd->done = 1;
+ }
+}
+
+
+/*
+ * Fetch a specific revision of a wiki page
+ */
+void wiki_rev(char *pagename, char *rev, char *operation)
+{
+ int r;
+ char history_page_name[270];
+ long msgnum;
+ char temp[PATH_MAX];
+ struct CtdlMessage *msg;
+ FILE *fp;
+ struct HistoryEraserCallBackData hecbd;
+ int rv;
+
+ r = CtdlDoIHavePermissionToReadMessagesInThisRoom();
+ if (r != om_ok) {
+ if (r == om_not_logged_in) {
+ cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
+ }
+ else {
+ cprintf("%d An unknown error has occurred.\n", ERROR);
+ }
+ return;
+ }
+
+ /* Begin by fetching the current version of the page. We're going to patch
+ * backwards through the diffs until we get the one we want.
+ */
+ msgnum = locate_message_by_euid(pagename, &CC->room);
+ if (msgnum > 0L) {
+ msg = CtdlFetchMessage(msgnum, 1);
+ }
+ else {
+ msg = NULL;
+ }
+
+ if ((msg != NULL) && (msg->cm_fields['M'] == NULL)) {
+ CtdlFreeMessage(msg);
+ msg = NULL;
+ }
+
+ if (msg == NULL) {
+ cprintf("%d Page '%s' was not found.\n", ERROR+MESSAGE_NOT_FOUND, pagename);
+ return;
+ }
+
+ /* Output it to a file... */
+
+ CtdlMakeTempFileName(temp, sizeof temp);
+ fp = fopen(temp, "w");
+ if (fp != NULL) {
+ r = fwrite(msg->cm_fields['M'], strlen(msg->cm_fields['M']), 1, fp);
+ fclose(fp);
+ }
+ else {
+ CtdlLogPrintf(CTDL_ALERT, "Cannot open %s: %s\n", temp, strerror(errno));
+ }
+ CtdlFreeMessage(msg);
+
+ /* Now go get the revision history and patch backwards through the diffs until
+ * we get to the revision we want.
+ */
+
+ snprintf(history_page_name, sizeof history_page_name, "%s_HISTORY_", pagename);
+ msgnum = locate_message_by_euid(history_page_name, &CC->room);
+ if (msgnum > 0L) {
+ msg = CtdlFetchMessage(msgnum, 1);
+ }
+ else {
+ msg = NULL;
+ }
+
+ if ((msg != NULL) && (msg->cm_fields['M'] == NULL)) {
+ CtdlFreeMessage(msg);
+ msg = NULL;
+ }
+
+ if (msg == NULL) {
+ cprintf("%d Revision history for '%s' was not found.\n", ERROR+MESSAGE_NOT_FOUND, pagename);
+ return;
+ }
+
+ memset(&hecbd, 0, sizeof(struct HistoryEraserCallBackData));
+ hecbd.tempfilename = temp;
+ hecbd.stop_when = rev;
+
+ mime_parser(msg->cm_fields['M'], NULL, *wiki_rev_callback, NULL, NULL, (void *)&hecbd, 0);
+ CtdlFreeMessage(msg);
+
+ if (hecbd.done == 0) {
+ cprintf("%d Revision '%s' of page '%s' was not found.\n",
+ ERROR + MESSAGE_NOT_FOUND, rev, pagename
+ );
+ }
+ else if (!strcasecmp(operation, "fetch")) {
+ msg = malloc(sizeof(struct CtdlMessage));
+ memset(msg, 0, sizeof(struct CtdlMessage));
+ msg->cm_magic = CTDLMESSAGE_MAGIC;
+ msg->cm_anon_type = MES_NORMAL;
+ msg->cm_format_type = FMT_RFC822;
+ msg->cm_fields['A'] = strdup("Citadel");
+ fp = fopen(temp, "r");
+ if (fp) {
+ long len;
+ fseek(fp, 0L, SEEK_END);
+ len = ftell(fp);
+ fseek(fp, 0L, SEEK_SET);
+ msg->cm_fields['M'] = malloc(len + 1);
+ rv = fread(msg->cm_fields['M'], len, 1, fp);
+ msg->cm_fields['M'][len] = 0;
+ fclose(fp);
+ }
+ char *wwm = "9999999999.WikiWaybackMachine";
+ CtdlCreateRoom(wwm, 5, "", 0, 1, 1, VIEW_BBS);
+ msgnum = CtdlSubmitMsg(msg, NULL, wwm, 0); /* FIXME put somewhere else */
+ CtdlFreeMessage(msg);
+ cprintf("%d %ld\n", CIT_OK, msgnum);
+ }
+ else if (!strcasecmp(operation, "revert")) {
+ cprintf("%d FIXME not finished yet, check the log to find out wtf\n", ERROR);
+ }
+ else {
+ cprintf("%d An unknown operation was requested.\n", ERROR+CMD_NOT_SUPPORTED);
+ }
+
+ unlink(temp);
+ return;
+}
+
+
+
/*
* commands related to wiki management
*/
void cmd_wiki(char *argbuf) {
char subcmd[32];
char pagename[256];
+ char rev[128];
+ char operation[16];
extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
if (!strcasecmp(subcmd, "history")) {
- extract_token(pagename, argbuf, 1, '|', sizeof subcmd);
+ extract_token(pagename, argbuf, 1, '|', sizeof pagename);
wiki_history(pagename);
return;
}
+ if (!strcasecmp(subcmd, "rev")) {
+ extract_token(pagename, argbuf, 1, '|', sizeof pagename);
+ extract_token(rev, argbuf, 2, '|', sizeof rev);
+ extract_token(operation, argbuf, 3, '|', sizeof operation);
+ wiki_rev(pagename, rev, operation);
+ return;
+ }
+
cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
}
if (!threading)
{
CtdlRegisterMessageHook(wiki_upload_beforesave, EVT_BEFORESAVE);
- CtdlRegisterProtoHook(cmd_wiki, "WIKI", "Commands related to Wiki management");
+ CtdlRegisterProtoHook(cmd_wiki, "WIKI", "Commands related to Wiki management");
}
/* return our Subversion id for the Log */
projects / citadel.git / blobdiff