]> code.citadel.org Git - citadel.git/blobdiff - citadel/modules/wiki/serv_wiki.c
This is an omnibus commit which moves the Citadel Server from crusty old GNU Autotool...
[citadel.git] / citadel / modules / wiki / serv_wiki.c
diff --git a/citadel/modules/wiki/serv_wiki.c b/citadel/modules/wiki/serv_wiki.c
deleted file mode 100644 (file)
index ebbb329..0000000
+++ /dev/null
@@ -1,728 +0,0 @@
-/*
- * Server-side module for Wiki rooms.  This handles things like version control. 
- * 
- * Copyright (c) 2009-2021 by the citadel.org team
- *
- * This program is open source software.  You can redistribute it and/or
- * modify it under the terms of the GNU General Public License, version 3.
- *
- * This program 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 General Public License for more details.
- */
-
-#include "sysdep.h"
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <pwd.h>
-#include <errno.h>
-#include <ctype.h>
-#include <sys/types.h>
-#include <time.h>
-#include <sys/wait.h>
-#include <string.h>
-#include <limits.h>
-#include <libcitadel.h>
-#include "citadel.h"
-#include "server.h"
-#include "citserver.h"
-#include "support.h"
-#include "config.h"
-#include "control.h"
-#include "user_ops.h"
-#include "room_ops.h"
-#include "database.h"
-#include "msgbase.h"
-#include "euidindex.h"
-#include "ctdl_module.h"
-
-/*
- * Data passed back and forth between wiki_rev() and its MIME parser callback
- */
-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 */
-};
-
-/*
- * Name of the temporary room we create to store old revisions when someone requests them.
- * We put it in an invalid namespace so the DAP cleans up after us later.
- */
-char *wwm = "9999999999.WikiWaybackMachine";
-
-/*
- * Before allowing a wiki page save to execute, we have to perform version control.
- * This involves fetching the old version of the page if it exists.
- */
-int wiki_upload_beforesave(struct CtdlMessage *msg, struct recptypes *recp) {
-       long old_msgnum = (-1L);
-       struct CtdlMessage *old_msg = NULL;
-       long history_msgnum = (-1L);
-       struct CtdlMessage *history_msg = NULL;
-       char diff_old_filename[PATH_MAX];
-       char diff_new_filename[PATH_MAX];
-       char diff_out_filename[PATH_MAX];
-       char diff_cmd[PATH_MAX];
-       FILE *fp;
-       int rv;
-       char history_page[1024];
-       long history_page_len;
-       char boundary[256];
-       char prefixed_boundary[258];
-       char buf[1024];
-       char *diffbuf = NULL;
-       size_t diffbuf_len = 0;
-       char *ptr = NULL;
-       long newmsgid;
-       StrBuf *msgidbuf;
-
-       if (!CC->logged_in) return(0);  /* Only do this if logged in. */
-
-       /* Is this a room with a Wiki in it, don't run this hook. */
-       if (CC->room.QRdefaultview != VIEW_WIKI) {
-               return(0);
-       }
-
-       /* If this isn't a MIME message, don't bother. */
-       if (msg->cm_format_type != 4) return(0);
-
-       /* If there's no EUID we can't do this.  Reject the post. */
-       if (CM_IsEmpty(msg, eExclusiveID)) return(1);
-
-       newmsgid = get_new_message_number();
-       msgidbuf = NewStrBuf();
-       StrBufPrintf(msgidbuf, "%08lX-%08lX@%s/%s",
-                    (long unsigned int) time(NULL),
-                    (long unsigned int) newmsgid,
-                    CtdlGetConfigStr("c_fqdn"),
-                    msg->cm_fields[eExclusiveID]
-               );
-
-       CM_SetAsFieldSB(msg, emessageId, &msgidbuf);
-
-       history_page_len = snprintf(history_page, sizeof history_page,
-                                   "%s_HISTORY_", msg->cm_fields[eExclusiveID]);
-
-       /* Make sure we're saving a real wiki page rather than a wiki history page.
-        * This is important in order to avoid recursing infinitely into this hook.
-        */
-       if (    (msg->cm_lengths[eExclusiveID] >= 9)
-               && (!strcasecmp(&msg->cm_fields[eExclusiveID][msg->cm_lengths[eExclusiveID]-9], "_HISTORY_"))
-       ) {
-               syslog(LOG_DEBUG, "History page not being historied\n");
-               return(0);
-       }
-
-       /* If there's no message text, obviously this is all b0rken and shouldn't happen at all */
-       if (CM_IsEmpty(msg, eMesageText)) return(0);
-
-       /* Set the message subject identical to the page name */
-       CM_CopyField(msg, eMsgSubject, eExclusiveID);
-
-       /* See if we can retrieve the previous version. */
-       old_msgnum = CtdlLocateMessageByEuid(msg->cm_fields[eExclusiveID], &CC->room);
-       if (old_msgnum > 0L) {
-               old_msg = CtdlFetchMessage(old_msgnum, 1);
-       }
-       else {
-               old_msg = NULL;
-       }
-
-       if ((old_msg != NULL) && (CM_IsEmpty(old_msg, eMesageText))) {  /* old version is corrupt? */
-               CM_Free(old_msg);
-               old_msg = NULL;
-       }
-       
-       /* If no changes were made, don't bother saving it again */
-       if ((old_msg != NULL) && (!strcmp(msg->cm_fields[eMesageText], old_msg->cm_fields[eMesageText]))) {
-               CM_Free(old_msg);
-               return(1);
-       }
-
-       /*
-        * Generate diffs
-        */
-       CtdlMakeTempFileName(diff_old_filename, sizeof diff_old_filename);
-       CtdlMakeTempFileName(diff_new_filename, sizeof diff_new_filename);
-       CtdlMakeTempFileName(diff_out_filename, sizeof diff_out_filename);
-
-       if (old_msg != NULL) {
-               fp = fopen(diff_old_filename, "w");
-               rv = fwrite(old_msg->cm_fields[eMesageText], old_msg->cm_lengths[eMesageText], 1, fp);
-               fclose(fp);
-               CM_Free(old_msg);
-       }
-
-       fp = fopen(diff_new_filename, "w");
-       rv = fwrite(msg->cm_fields[eMesageText], msg->cm_lengths[eMesageText], 1, fp);
-       fclose(fp);
-
-       snprintf(diff_cmd, sizeof diff_cmd,
-               DIFF " -u %s %s >%s",
-               diff_new_filename,
-               ((old_msg != NULL) ? diff_old_filename : "/dev/null"),
-               diff_out_filename
-       );
-       syslog(LOG_DEBUG, "diff cmd: %s", diff_cmd);
-       rv = system(diff_cmd);
-       syslog(LOG_DEBUG, "diff cmd returned %d", rv);
-
-       diffbuf_len = 0;
-       diffbuf = NULL;
-       fp = fopen(diff_out_filename, "r");
-       if (fp == NULL) {
-               fp = fopen("/dev/null", "r");
-       }
-       if (fp != NULL) {
-               fseek(fp, 0L, SEEK_END);
-               diffbuf_len = ftell(fp);
-               fseek(fp, 0L, SEEK_SET);
-               diffbuf = malloc(diffbuf_len + 1);
-               fread(diffbuf, diffbuf_len, 1, fp);
-               diffbuf[diffbuf_len] = '\0';
-               fclose(fp);
-       }
-
-       syslog(LOG_DEBUG, "diff length is "SIZE_T_FMT" bytes", diffbuf_len);
-
-       unlink(diff_old_filename);
-       unlink(diff_new_filename);
-       unlink(diff_out_filename);
-
-       /* Determine whether this was a bogus (empty) edit */
-       if ((diffbuf_len = 0) && (diffbuf != NULL)) {
-               free(diffbuf);
-               diffbuf = NULL;
-       }
-       if (diffbuf == NULL) {
-               return(1);              /* No changes at all?  Abandon the post entirely! */
-       }
-
-       /* Now look for the existing edit history */
-
-       history_msgnum = CtdlLocateMessageByEuid(history_page, &CC->room);
-       history_msg = NULL;
-       if (history_msgnum > 0L) {
-               history_msg = CtdlFetchMessage(history_msgnum, 1);
-       }
-
-       /* Create a new history message if necessary */
-       if (history_msg == NULL) {
-               char *buf;
-               long len;
-
-               history_msg = malloc(sizeof(struct CtdlMessage));
-               memset(history_msg, 0, sizeof(struct CtdlMessage));
-               history_msg->cm_magic = CTDLMESSAGE_MAGIC;
-               history_msg->cm_anon_type = MES_NORMAL;
-               history_msg->cm_format_type = FMT_RFC822;
-               CM_SetField(history_msg, eAuthor, HKEY("Citadel"));
-               if (!IsEmptyStr(CC->room.QRname)){
-                       CM_SetField(history_msg, eRecipient, CC->room.QRname, strlen(CC->room.QRname));
-               }
-               CM_SetField(history_msg, eExclusiveID, history_page, history_page_len);
-               CM_SetField(history_msg, eMsgSubject, history_page, history_page_len);
-               CM_SetField(history_msg, eSuppressIdx, HKEY("1")); /* suppress full text indexing */
-               snprintf(boundary, sizeof boundary, "Citadel--Multipart--%04x--%08lx", getpid(), time(NULL));
-               buf = (char*) malloc(1024);
-               len = snprintf(buf, 1024,
-                              "Content-type: multipart/mixed; boundary=\"%s\"\n\n"
-                              "This is a Citadel wiki history encoded as multipart MIME.\n"
-                              "Each part is comprised of a diff script representing one change set.\n"
-                              "\n"
-                              "--%s--\n",
-                              boundary, boundary
-               );
-               CM_SetAsField(history_msg, eMesageText, &buf, len);
-       }
-
-       /* Update the history message (regardless of whether it's new or existing) */
-
-       /* Remove the Message-ID from the old version of the history message.  This will cause a brand
-        * new one to be generated, avoiding an uninitentional hit of the loop zapper when we replicate.
-        */
-       CM_FlushField(history_msg, emessageId);
-
-       /* Figure out the boundary string.  We do this even when we generated the
-        * boundary string in the above code, just to be safe and consistent.
-        */
-       *boundary = '\0';
-
-       ptr = history_msg->cm_fields[eMesageText];
-       do {
-               ptr = memreadline(ptr, buf, sizeof buf);
-               if (*ptr != 0) {
-                       striplt(buf);
-                       if (!IsEmptyStr(buf) && (!strncasecmp(buf, "Content-type:", 13))) {
-                               if (
-                                       (bmstrcasestr(buf, "multipart") != NULL)
-                                       && (bmstrcasestr(buf, "boundary=") != NULL)
-                               ) {
-                                       safestrncpy(boundary, bmstrcasestr(buf, "\""), sizeof boundary);
-                                       char *qu;
-                                       qu = strchr(boundary, '\"');
-                                       if (qu) {
-                                               strcpy(boundary, ++qu);
-                                       }
-                                       qu = strchr(boundary, '\"');
-                                       if (qu) {
-                                               *qu = 0;
-                                       }
-                               }
-                       }
-               }
-       } while ( (IsEmptyStr(boundary)) && (*ptr != 0) );
-
-       /*
-        * Now look for the first boundary.  That is where we need to insert our fun.
-        */
-       if (!IsEmptyStr(boundary)) {
-               char *MsgText;
-               long MsgTextLen;
-               time_t Now = time(NULL);
-
-               snprintf(prefixed_boundary, sizeof(prefixed_boundary), "--%s", boundary);
-               
-               CM_GetAsField(history_msg, eMesageText, &MsgText, &MsgTextLen);
-
-               ptr = bmstrcasestr(MsgText, prefixed_boundary);
-               if (ptr != NULL) {
-                       StrBuf *NewMsgText;
-                       char uuid[64];
-                       char memo[512];
-                       long memolen;
-                       char encoded_memo[1024];
-                       
-                       NewMsgText = NewStrBufPlain(NULL, MsgTextLen + diffbuf_len + 1024);
-
-                       generate_uuid(uuid);
-                       memolen = snprintf(memo, sizeof(memo), "%s|%ld|%s|%s", 
-                                          uuid,
-                                          Now,
-                                          CC->user.fullname,
-                                          CtdlGetConfigStr("c_nodename"));
-
-                       memolen = CtdlEncodeBase64(encoded_memo, memo, memolen, 0);
-
-                       StrBufAppendBufPlain(NewMsgText, HKEY("--"), 0);
-                       StrBufAppendBufPlain(NewMsgText, boundary, -1, 0);
-                       StrBufAppendBufPlain(
-                               NewMsgText, 
-                               HKEY("\n"
-                                    "Content-type: text/plain\n"
-                                    "Content-Disposition: inline; filename=\""), 0);
-
-                       StrBufAppendBufPlain(NewMsgText, encoded_memo, memolen, 0);
-
-                       StrBufAppendBufPlain(
-                               NewMsgText, 
-                               HKEY("\"\n"
-                                    "Content-Transfer-Encoding: 8bit\n"
-                                    "\n"), 0);
-
-                       StrBufAppendBufPlain(NewMsgText, diffbuf, diffbuf_len, 0);
-                       StrBufAppendBufPlain(NewMsgText, HKEY("\n"), 0);
-
-                       StrBufAppendBufPlain(NewMsgText, ptr, MsgTextLen - (ptr - MsgText), 0);
-                       free(MsgText);
-                       CM_SetAsFieldSB(history_msg, eMesageText, &NewMsgText); 
-               }
-               else
-               {
-                       CM_SetAsField(history_msg, eMesageText, &MsgText, MsgTextLen); 
-               }
-
-               CM_SetFieldLONG(history_msg, eTimestamp, Now);
-       
-               CtdlSubmitMsg(history_msg, NULL, "");
-       }
-       else {
-               syslog(LOG_ALERT, "Empty boundary string in history message.  No history!\n");
-       }
-
-       free(diffbuf);
-       CM_Free(history_msg);
-       return(0);
-}
-
-
-/*
- * MIME Parser callback for wiki_history()
- *
- * 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_history_callback(char *name, char *filename, char *partnum, char *disp,
-                  void *content, char *cbtype, char *cbcharset, size_t length,
-                  char *encoding, char *cbid, void *cbuserdata)
-{
-       char memo[1024];
-
-       CtdlDecodeBase64(memo, filename, strlen(filename));
-       cprintf("%s\n", memo);
-}
-
-
-/*
- * Fetch a list of revisions for a particular wiki page
- */
-void wiki_history(char *pagename) {
-       int r;
-       char history_page_name[270];
-       long msgnum;
-       struct CtdlMessage *msg;
-
-       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;
-       }
-
-       snprintf(history_page_name, sizeof history_page_name, "%s_HISTORY_", pagename);
-       msgnum = CtdlLocateMessageByEuid(history_page_name, &CC->room);
-       if (msgnum > 0L) {
-               msg = CtdlFetchMessage(msgnum, 1);
-       }
-       else {
-               msg = NULL;
-       }
-
-       if ((msg != NULL) && CM_IsEmpty(msg, eMesageText)) {
-               CM_Free(msg);
-               msg = NULL;
-       }
-
-       if (msg == NULL) {
-               cprintf("%d Revision history for '%s' was not found.\n", ERROR+MESSAGE_NOT_FOUND, pagename);
-               return;
-       }
-
-       
-       cprintf("%d Revision history for '%s'\n", LISTING_FOLLOWS, pagename);
-       mime_parser(CM_RANGE(msg, eMesageText), *wiki_history_callback, NULL, NULL, NULL, 0);
-       cprintf("000\n");
-
-       CM_Free(msg);
-       return;
-}
-
-/*
- * MIME Parser callback for wiki_rev()
- *
- * The "filename" field will contain a memo field, which includes (among other things)
- * the uuid of this revision.  After we hit the desired revision, we stop processing.
- *
- * The "content" filed will contain "diff" output suitable for applying via "patch"
- * to our temporary file.
- */
-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);
-       striplt(this_rev);
-
-       /* Perform the patch */
-       fp = popen(PATCH " -f -s -p0 -r /dev/null >/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) && (ptr < ((char*)content + length)));
-               if (pclose(fp) != 0) {
-                       syslog(LOG_ERR, "pclose() returned an error - patch failed\n");
-               }
-       }
-
-       if (!strcasecmp(this_rev, hecbd->stop_when)) {
-               /* Found our target rev.  Tell any subsequent callbacks to suppress processing. */
-               syslog(LOG_DEBUG, "Target revision has been reached -- stop patching.\n");
-               hecbd->done = 1;
-       }
-}
-
-
-/*
- * Fetch a specific revision of a wiki page.  The "operation" string may be set to "fetch" in order
- * to simply fetch the desired revision and store it in a temporary location for viewing, or "revert"
- * to revert the currently active page to that revision.
- */
-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;
-       long len = 0L;
-       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;
-       }
-
-       if (!strcasecmp(operation, "revert")) {
-               r = CtdlDoIHavePermissionToPostInThisRoom(temp, sizeof temp, NULL, POST_LOGGED_IN, 0);
-               if (r != 0) {
-                       cprintf("%d %s\n", r, temp);
-                       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 = CtdlLocateMessageByEuid(pagename, &CC->room);
-       if (msgnum > 0L) {
-               msg = CtdlFetchMessage(msgnum, 1);
-       }
-       else {
-               msg = NULL;
-       }
-
-       if ((msg != NULL) && CM_IsEmpty(msg, eMesageText)) {
-               CM_Free(msg);
-               msg = NULL;
-       }
-
-       if (msg == NULL) {
-               cprintf("%d Page '%s' was not found.\n", ERROR+MESSAGE_NOT_FOUND, pagename);
-               return;
-       }
-
-       /* Output it to a temporary file */
-
-       CtdlMakeTempFileName(temp, sizeof temp);
-       fp = fopen(temp, "w");
-       if (fp != NULL) {
-               r = fwrite(msg->cm_fields[eMesageText], msg->cm_lengths[eMesageText], 1, fp);
-               fclose(fp);
-       }
-       else {
-               syslog(LOG_ERR, "%s: %m", temp);
-       }
-       CM_Free(msg);
-
-       /* Get the revision history */
-
-       snprintf(history_page_name, sizeof history_page_name, "%s_HISTORY_", pagename);
-       msgnum = CtdlLocateMessageByEuid(history_page_name, &CC->room);
-       if (msgnum > 0L) {
-               msg = CtdlFetchMessage(msgnum, 1);
-       }
-       else {
-               msg = NULL;
-       }
-
-       if ((msg != NULL) && CM_IsEmpty(msg, eMesageText)) {
-               CM_Free(msg);
-               msg = NULL;
-       }
-
-       if (msg == NULL) {
-               cprintf("%d Revision history for '%s' was not found.\n", ERROR+MESSAGE_NOT_FOUND, pagename);
-               return;
-       }
-
-       /* Start patching backwards (newest to oldest) through the revision history until we
-        * hit the revision uuid requested by the user.  (The callback will perform each one.)
-        */
-
-       memset(&hecbd, 0, sizeof(struct HistoryEraserCallBackData));
-       hecbd.tempfilename = temp;
-       hecbd.stop_when = rev;
-       striplt(hecbd.stop_when);
-
-       mime_parser(CM_RANGE(msg, eMesageText), *wiki_rev_callback, NULL, NULL, (void *)&hecbd, 0);
-       CM_Free(msg);
-
-       /* Were we successful? */
-       if (hecbd.done == 0) {
-               cprintf("%d Revision '%s' of page '%s' was not found.\n",
-                       ERROR + MESSAGE_NOT_FOUND, rev, pagename
-               );
-       }
-
-       /* We have the desired revision on disk.  Now do something with it. */
-
-       else if ( (!strcasecmp(operation, "fetch")) || (!strcasecmp(operation, "revert")) ) {
-               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;
-               fp = fopen(temp, "r");
-               if (fp) {
-                       char *msgbuf;
-                       fseek(fp, 0L, SEEK_END);
-                       len = ftell(fp);
-                       fseek(fp, 0L, SEEK_SET);
-                       msgbuf = malloc(len + 1);
-                       rv = fread(msgbuf, len, 1, fp);
-                       syslog(LOG_DEBUG, "did %d blocks of %ld bytes\n", rv, len);
-                       msgbuf[len] = '\0';
-                       CM_SetAsField(msg, eMesageText, &msgbuf, len);
-                       fclose(fp);
-               }
-               if (len <= 0) {
-                       msgnum = (-1L);
-               }
-               else if (!strcasecmp(operation, "fetch")) {
-                       CM_SetField(msg, eAuthor, HKEY("Citadel"));
-                       CtdlCreateRoom(wwm, 5, "", 0, 1, 1, VIEW_BBS);  /* Not an error if already exists */
-                       msgnum = CtdlSubmitMsg(msg, NULL, wwm);         /* Store the revision here */
-
-                       /*
-                        * WARNING: VILE SLEAZY HACK
-                        * This will avoid the 'message xxx is not in this room' security error,
-                        * but only if the client fetches the message we just generated immediately
-                        * without first trying to perform other fetch operations.
-                        */
-                       if (CC->cached_msglist != NULL) {
-                               free(CC->cached_msglist);
-                               CC->cached_msglist = NULL;
-                               CC->cached_num_msgs = 0;
-                       }
-                       CC->cached_msglist = malloc(sizeof(long));
-                       if (CC->cached_msglist != NULL) {
-                               CC->cached_num_msgs = 1;
-                               CC->cached_msglist[0] = msgnum;
-                       }
-
-               }
-               else if (!strcasecmp(operation, "revert")) {
-                       CM_SetFieldLONG(msg, eTimestamp, time(NULL));
-                       if (!IsEmptyStr(CC->user.fullname)) {
-                               CM_SetField(msg, eAuthor, CC->user.fullname, strlen(CC->user.fullname));
-                       }
-
-                       if (!IsEmptyStr(CC->cs_inet_email)) {
-                               CM_SetField(msg, erFc822Addr, CC->cs_inet_email, strlen(CC->cs_inet_email));
-                       }
-
-                       if (!IsEmptyStr(CC->room.QRname)) {
-                               CM_SetField(msg, eOriginalRoom, CC->room.QRname, strlen(CC->room.QRname));
-                       }
-
-                       if (!IsEmptyStr(pagename)) {
-                               CM_SetField(msg, eExclusiveID, pagename, strlen(pagename));
-                       }
-                       msgnum = CtdlSubmitMsg(msg, NULL, "");          /* Replace the current revision */
-               }
-               else {
-                       /* Theoretically it is impossible to get here, but throw an error anyway */
-                       msgnum = (-1L);
-               }
-               CM_Free(msg);
-               if (msgnum >= 0L) {
-                       cprintf("%d %ld\n", CIT_OK, msgnum);            /* Give the client a msgnum */
-               }
-               else {
-                       cprintf("%d Error %ld has occurred.\n", ERROR+INTERNAL_ERROR, msgnum);
-               }
-       }
-
-       /* We did all this work for nothing.  Express anguish to the caller. */
-       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 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);
-}
-
-
-
-/*
- * Module initialization
- */
-CTDL_MODULE_INIT(wiki)
-{
-       if (!threading)
-       {
-               CtdlRegisterMessageHook(wiki_upload_beforesave, EVT_BEFORESAVE);
-               CtdlRegisterProtoHook(cmd_wiki, "WIKI", "Commands related to Wiki management");
-       }
-
-       /* return our module name for the log */
-       return "wiki";
-}