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Member "citadel/modules/notes/serv_notes.c" (5 Jun 2021, 4128 Bytes) of package /linux/www/citadel.tar.gz:


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    1 /*
    2  * Handles functions related to yellow sticky notes.
    3  *
    4  * Copyright (c) 2007-2012 by the citadel.org team
    5  *
    6  * This program is open source software; you can redistribute it and/or modify
    7  * it under the terms of the GNU General Public License version 3.
    8  *
    9  * This program is distributed in the hope that it will be useful,
   10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   12  * GNU General Public License for more details.
   13  */
   14 
   15 #include "sysdep.h"
   16 #include <stdlib.h>
   17 #include <unistd.h>
   18 #include <stdio.h>
   19 #include <fcntl.h>
   20 #include <signal.h>
   21 #include <pwd.h>
   22 #include <errno.h>
   23 #include <sys/types.h>
   24 #include <time.h>
   25 #include <sys/wait.h>
   26 #include <string.h>
   27 #include <limits.h>
   28 #include <libcitadel.h>
   29 #include "citadel.h"
   30 #include "server.h"
   31 #include "citserver.h"
   32 #include "support.h"
   33 #include "config.h"
   34 #include "user_ops.h"
   35 #include "database.h"
   36 #include "msgbase.h"
   37 #include "ctdl_module.h"
   38 
   39 
   40 /*
   41  * Callback function for serv_notes_beforesave() hunts for a vNote in the MIME structure
   42  */
   43 void notes_extract_vnote(char *name, char *filename, char *partnum, char *disp,
   44            void *content, char *cbtype, char *cbcharset, size_t length,
   45            char *encoding, char *cbid, void *cbuserdata)
   46 {
   47     struct vnote **v = (struct vnote **) cbuserdata;
   48 
   49     if (!strcasecmp(cbtype, "text/vnote")) {
   50 
   51         syslog(LOG_DEBUG, "Part %s contains a vNote!  Loading...\n", partnum);
   52         if (*v != NULL) {
   53             vnote_free(*v);
   54         }
   55         *v = vnote_new_from_str(content);
   56     }
   57 }
   58 
   59 
   60 /*
   61  * Before-save hook searches for two different types of notes (legacy Kolab/Aethera notes
   62  * and modern vNote format notes) and does its best to learn the subject (summary)
   63  * and EUID (uid) of the note for Citadel's own nefarious purposes.
   64  */
   65 int serv_notes_beforesave(struct CtdlMessage *msg, struct recptypes *recp)
   66 {
   67     char *p;
   68     int a, i;
   69     char uuid[512];
   70     struct vnote *v = NULL;
   71 
   72     /* First determine if this room has the "notes" view set */
   73 
   74     if (CC->room.QRdefaultview != VIEW_NOTES) {
   75         return(0);          /* not notes; do nothing */
   76     }
   77 
   78     /* It must be an RFC822 message! */
   79     if (msg->cm_format_type != 4) {
   80         return(0);  /* You tried to save a non-RFC822 message! */
   81     }
   82     
   83     /*
   84      * If we are in a "notes" view room, and the client has sent an RFC822
   85      * message containing an X-KOrg-Note-Id: field (Aethera does this, as
   86      * do some Kolab clients) then set both the Subject and the Exclusive ID
   87      * of the message to that.  It's going to be a UUID so we want to replace
   88      * any existing message containing that UUID.
   89      */
   90     strcpy(uuid, "");
   91     p = msg->cm_fields[eMesageText];
   92     a = msg->cm_lengths[eMesageText];
   93     while (--a > 0) {
   94         if (!strncasecmp(p, "X-KOrg-Note-Id: ", 16)) {  /* Found it */
   95             safestrncpy(uuid, p + 16, sizeof(uuid));
   96             for (i = 0; uuid[i]; ++i) {
   97                 if ( (uuid[i] == '\r') || (uuid[i] == '\n') ) {
   98                     uuid[i] = 0;
   99                     break;
  100                 }
  101             }
  102 
  103             syslog(LOG_DEBUG, "UUID of note is: %s\n", uuid);
  104             if (!IsEmptyStr(uuid)) {
  105                 CM_SetField(msg, eExclusiveID, uuid, strlen(uuid));
  106 
  107                 CM_CopyField(msg, eMsgSubject, eExclusiveID);
  108             }
  109         }
  110         p++;
  111     }
  112 
  113     /* Modern clients are using vNote format.  Check for one... */
  114 
  115     mime_parser(CM_RANGE(msg, eMesageText),
  116             *notes_extract_vnote,
  117             NULL, NULL,
  118             &v,     /* user data ptr - put the vnote here */
  119             0
  120     );
  121 
  122     if (v == NULL) return(0);   /* no vNotes were found in this message */
  123 
  124     /* Set the message EUID to the vNote UID */
  125 
  126     if ((v->uid) && (!IsEmptyStr(v->uid))) {
  127         syslog(LOG_DEBUG, "UID of vNote is: %s\n", v->uid);
  128         CM_SetField(msg, eExclusiveID, v->uid, strlen(v->uid));
  129     }
  130 
  131     /* Set the message Subject to the vNote Summary */
  132 
  133     if ((v->summary) && (!IsEmptyStr(v->summary))) {
  134         CM_SetField(msg, eMsgSubject, v->summary, strlen(v->summary));
  135 
  136         if (msg->cm_lengths[eMsgSubject] > 72) {
  137             strcpy(&msg->cm_fields[eMsgSubject][68], "...");
  138             CM_CutFieldAt(msg, eMsgSubject, 72);
  139         }
  140     }
  141 
  142     vnote_free(v);
  143     
  144     return(0);
  145 }
  146 
  147 
  148 CTDL_MODULE_INIT(notes)
  149 {
  150     if (!threading)
  151     {
  152         CtdlRegisterMessageHook(serv_notes_beforesave, EVT_BEFORESAVE);
  153     }
  154     
  155     /* return our module name for the log */
  156     return "notes";
  157 }