citadel/modules/extnotify/extnotify_main.c

   1 /*
   2  * extnotify_main.c
   3  * Mathew McBride
   4  *
   5  * This module implements an external pager hook for when notifcation
   6  * of a new email is wanted.
   7  *
   8  * Based on bits of serv_funambol
   9  * Contact: <matt@mcbridematt.dhs.org> / <matt@comalies>
  10  *
  11  * Copyright (c) 2008-2009
  12  *
  13  *  This program is free software; you can redistribute it and/or modify
  14  *  it under the terms of the GNU General Public License as published by
  15  *  the Free Software Foundation; either version 3 of the License, or
  16  *  (at your option) any later version.
  17  *
  18  *  This program is distributed in the hope that it will be useful,
  19  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  *  GNU General Public License for more details.
  22  *
  23  *  You should have received a copy of the GNU General Public License
  24  *  along with this program; if not, write to the Free Software
  25  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  26  */
  27
  28 #include "sysdep.h"
  29 #include <stdlib.h>
  30 #include <unistd.h>
  31 #include <stdio.h>
  32 #include <fcntl.h>
  33 #include <signal.h>
  34 #include <pwd.h>
  35 #include <errno.h>
  36 #include <sys/types.h>
  37
  38 #if TIME_WITH_SYS_TIME
  39 # include <sys/time.h>
  40 # include <time.h>
  41 #else
  42 # if HAVE_SYS_TIME_H
  43 #  include <sys/time.h>
  44 # else
  45 #  include <time.h>
  46 # endif
  47 #endif
  48
  49 #include <sys/wait.h>
  50 #include <string.h>
  51 #include <limits.h>
  52 #include <sys/socket.h>
  53 #include <libcitadel.h>
  54 #include "citadel.h"
  55 #include "server.h"
  56 #include "citserver.h"
  57 #include "support.h"
  58 #include "config.h"
  59 #include "control.h"
  60 #include "user_ops.h"
  61 #include "database.h"
  62 #include "msgbase.h"
  63 #include "internet_addressing.h"
  64 #include "domain.h"
  65 #include "clientsocket.h"
  66 #include "event_client.h"
  67 #include "extnotify.h"
  68
  69 #include "ctdl_module.h"
  70
  71 struct CitContext extnotify_queue_CC;
  72
  73 void ExtNotify_PutErrorMessage(NotifyContext *Ctx, StrBuf *ErrMsg)
  74 {
  75         int nNext;
  76         if (Ctx->NotifyErrors == NULL)
  77                 Ctx->NotifyErrors = NewHash(1, Flathash);
  78
  79         nNext = GetCount(Ctx->NotifyErrors) + 1;
  80         Put(Ctx->NotifyErrors,
  81             (char*)&nNext,
  82             sizeof(int),
  83             ErrMsg,
  84             HFreeStrBuf);
  85 }
  86
  87 StrBuf* GetNHBuf(int i, int allocit, StrBuf **NotifyHostList)
  88 {
  89         if ((NotifyHostList[i] == NULL) && (allocit != 0))
  90                 NotifyHostList[i] = NewStrBuf();
  91         return NotifyHostList[i];
  92 }
  93
  94
  95 StrBuf** GetNotifyHosts(void)
  96 {
  97         char NotifyHostsBuf[SIZ];
  98         StrBuf *Host;
  99         StrBuf *File;
 100         StrBuf *NotifyBuf;
 101         int notify;
 102         const char *pchs, *pche;
 103         const char *NextHost = NULL;
 104         StrBuf **NotifyHostList;
 105         int num_notify;
 106
 107         /* See if we have any Notification Hosts configured */
 108         num_notify = get_hosts(NotifyHostsBuf, "notify");
 109         if (num_notify < 1)
 110                 return(NULL);
 111
 112         NotifyHostList = malloc(sizeof(StrBuf*) * 2 * (num_notify + 1));
 113         memset(NotifyHostList, 0, sizeof(StrBuf*) * 2 * (num_notify + 1));
 114
 115         NotifyBuf = NewStrBufPlain(NotifyHostsBuf, -1);
 116         /* get all configured notifiers's */
 117         for (notify=0; notify<num_notify; notify++) {
 118
 119                 Host = GetNHBuf(notify * 2, 1, NotifyHostList);
 120                 StrBufExtract_NextToken(Host, NotifyBuf, &NextHost, '|');
 121                 pchs = ChrPtr(Host);
 122                 pche = strchr(pchs, ':');
 123                 if (pche == NULL) {
 124                         CtdlLogPrintf(CTDL_ERR,
 125                                       "extnotify: filename of notification template not found in %s.\n",
 126                                       pchs);
 127                         continue;
 128                 }
 129                 File = GetNHBuf(notify * 2 + 1, 1, NotifyHostList);
 130                 StrBufPlain(File, pchs, pche - pchs);
 131                 StrBufCutLeft(Host, pche - pchs + 1);
 132         }
 133         return NotifyHostList;
 134 }
 135
 136
 137 /*! \brief Get configuration message for pager/funambol system from the
 138  *                      users "My Citadel Config" room
 139  */
 140 eNotifyType extNotify_getConfigMessage(char *username, char **PagerNumber, char **FreeMe)
 141 {
 142         struct ctdlroom qrbuf; // scratch for room
 143         struct ctdluser user; // ctdl user instance
 144         char configRoomName[ROOMNAMELEN];
 145         struct CtdlMessage *msg = NULL;
 146         struct cdbdata *cdbfr;
 147         long *msglist = NULL;
 148         int num_msgs = 0;
 149         int a;
 150         char *configMsg;
 151         char *pch;
 152
 153         // Get the user
 154         CtdlGetUser(&user, username);
 155
 156         CtdlMailboxName(configRoomName, sizeof configRoomName, &user, USERCONFIGROOM);
 157         // Fill qrbuf
 158         CtdlGetRoom(&qrbuf, configRoomName);
 159         /* Do something really, really stoopid here. Raid the room on ourselves,
 160          * loop through the messages manually and find it. I don't want
 161          * to use a CtdlForEachMessage callback here, as we would be
 162          * already in one */
 163         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
 164         if (cdbfr != NULL) {
 165                 msglist = (long *) cdbfr->ptr;
 166                 cdbfr->ptr = NULL;      /* CtdlForEachMessage() now owns this memory */
 167                 num_msgs = cdbfr->len / sizeof(long);
 168                 cdb_free(cdbfr);
 169         } else {
 170                 CtdlLogPrintf(CTDL_DEBUG, "extNotify_getConfigMessage: No config messages found\n");
 171                 return eNone;   /* No messages at all?  No further action. */
 172         }
 173         for (a = 0; a < num_msgs; ++a) {
 174                 msg = CtdlFetchMessage(msglist[a], 1);
 175                 if (msg != NULL) {
 176                         if ((msg->cm_fields['U'] != NULL) &&
 177                             (strncasecmp(msg->cm_fields['U'], PAGER_CONFIG_MESSAGE,
 178                                          strlen(PAGER_CONFIG_MESSAGE)) == 0)) {
 179                                 break;
 180                         }
 181                         CtdlFreeMessage(msg);
 182                         msg = NULL;
 183                 }
 184         }
 185
 186         if (msg == NULL)
 187                 return eNone;
 188
 189         // Do a simple string search to see if 'funambol' is selected as the
 190         // type. This string would be at the very top of the message contents.
 191
 192         configMsg = msg->cm_fields['M'];
 193         msg->cm_fields['M'] = NULL;
 194         CtdlFreeMessage(msg);
 195
 196         /* here we would find the pager number... */
 197         pch = strchr(configMsg, '\n');
 198         if (pch != NULL)
 199         {
 200                 *pch = '\0';
 201                 pch ++;
 202         }
 203
 204         /* Check to see if:
 205          * 1. The user has configured paging / They have and disabled it
 206          * AND 2. There is an external pager program
 207          * 3. A Funambol server has been entered
 208          *
 209          */
 210         if (!strncasecmp(configMsg, "none", 4))
 211         {
 212                 free(configMsg);
 213                 return eNone;
 214         }
 215
 216         if (!strncasecmp(configMsg, HKEY(PAGER_CONFIG_HTTP)))
 217         {
 218                 free(configMsg);
 219                 return eHttpMessages;
 220         }
 221         if (!strncasecmp(configMsg, HKEY(FUNAMBOL_CONFIG_TEXT)))
 222         {
 223                 free(configMsg);
 224                 return eFunambol;
 225         }
 226         else if (!strncasecmp(configMsg, HKEY(PAGER_CONFIG_SYSTEM)))
 227         {
 228                 // whats the pager number?
 229                 if (!pch || (*pch == '\0'))
 230                 {
 231                         free(configMsg);
 232
 233                         return eNone;
 234                 }
 235                 while (isspace(*pch))
 236                         pch ++;
 237                 *PagerNumber = pch;
 238                 while (isdigit(*pch) || (*pch == '+'))
 239                         pch++;
 240                 *pch = '\0';
 241                 *FreeMe = configMsg;
 242                 return eTextMessage;
 243         }
 244
 245         free(configMsg);
 246         return eNone;
 247 }
 248
 249
 250 /*
 251  * Process messages in the external notification queue
 252  */
 253 void process_notify(long NotifyMsgnum, void *usrdata)
 254 {
 255         NotifyContext *Ctx;
 256         long msgnum = 0;
 257         long todelete[1];
 258         char *pch;
 259         struct CtdlMessage *msg;
 260         eNotifyType Type;
 261         char remoteurl[SIZ];
 262         char *FreeMe = NULL;
 263         char *PagerNo;
 264         CitContext *SubC;
 265
 266         Ctx = (NotifyContext*) usrdata;
 267
 268         msg = CtdlFetchMessage(NotifyMsgnum, 1);
 269         if ( msg->cm_fields['W'] != NULL)
 270         {
 271                 Type = extNotify_getConfigMessage(msg->cm_fields['W'], &PagerNo, &FreeMe);
 272
 273                 pch = strstr(msg->cm_fields['M'], "msgid|");
 274                 if (pch != NULL)
 275                         msgnum = atol(pch + sizeof("msgid"));
 276
 277                 switch (Type)
 278                 {
 279                 case eFunambol:
 280                         snprintf(remoteurl, SIZ, "http://%s@%s:%d/%s",
 281                                  config.c_funambol_auth,
 282                                  config.c_funambol_host,
 283                                  config.c_funambol_port,
 284                                  FUNAMBOL_WS);
 285
 286                         SubC = CloneContext (CC);
 287                         SubC->session_specific_data = NULL;// (char*) DupNotifyContext(Ctx);
 288
 289                         notify_http_server(remoteurl,
 290                                            file_funambol_msg,
 291                                            strlen(file_funambol_msg),/*GNA*/
 292                                            msg->cm_fields['W'],
 293                                            msg->cm_fields['I'],
 294                                            msgnum,
 295                                            NULL);
 296                         break;
 297                 case eHttpMessages:
 298                 {
 299                         int i = 0;
 300                         StrBuf *URL;
 301                         char URLBuf[SIZ];
 302                         StrBuf *File;
 303                         StrBuf *FileBuf = NewStrBuf();
 304
 305                         while(1)
 306                         {
 307
 308                                 URL = GetNHBuf(i*2, 0, Ctx->NotifyHostList);
 309                                 if (URL==NULL) break;
 310                                 File = GetNHBuf(i*2 + 1, 0, Ctx->NotifyHostList);
 311                                 if (File==NULL) break;
 312
 313                                 if (StrLength(File)>0)
 314                                         StrBufPrintf(FileBuf, "%s/%s",
 315                                                      ctdl_shared_dir,
 316                                                      ChrPtr(File));
 317                                 else
 318                                         FlushStrBuf(FileBuf);
 319                                 memcpy(URLBuf, ChrPtr(URL), StrLength(URL) + 1);
 320
 321                                 SubC = CloneContext (CC);
 322                                 SubC->session_specific_data = NULL;// (char*) DupNotifyContext(Ctx);
 323                                 notify_http_server(URLBuf,
 324                                                    ChrPtr(FileBuf),
 325                                                    StrLength(FileBuf),
 326                                                    msg->cm_fields['W'],
 327                                                    msg->cm_fields['I'],
 328                                                    msgnum,
 329                                                    NULL);
 330                                 i++;
 331                         }
 332                         FreeStrBuf(&FileBuf);
 333                 }
 334                 break;
 335                 case eTextMessage:
 336                 {
 337                         int commandSiz;
 338                         char *command;
 339
 340                         commandSiz = sizeof(config.c_pager_program) + strlen(PagerNo) + strlen(msg->cm_fields['W']) + 5;
 341                         command = malloc(commandSiz);
 342                         snprintf(command, commandSiz, "%s %s -u %s", config.c_pager_program, PagerNo, msg->cm_fields['W']);
 343                         system(command);
 344                         free(command);
 345                 }
 346                 break;
 347                 case eNone:
 348                         break;
 349                 }
 350         }
 351         if (FreeMe != NULL)
 352                 free(FreeMe);
 353         CtdlFreeMessage(msg);
 354         todelete[0] = NotifyMsgnum;
 355         CtdlDeleteMessages(FNBL_QUEUE_ROOM, todelete, 1, "");
 356 }
 357
 358
 359
 360
 361
 362
 363 /*!
 364  * \brief Run through the pager room queue
 365  */
 366 void do_extnotify_queue(void)
 367 {
 368         CitContext *CCC = CC;
 369
 370         NotifyContext Ctx;
 371         static int doing_queue = 0;
 372         //int i = 0;
 373
 374         /*
 375          * This is a simple concurrency check to make sure only one queue run
 376          * is done at a time.  We could do this with a mutex, but since we
 377          * don't really require extremely fine granularity here, we'll do it
 378          * with a static variable instead.
 379          */
 380
 381         if (IsEmptyStr(config.c_pager_program) &&
 382             IsEmptyStr(config.c_funambol_host))
 383         {
 384                 CtdlLogPrintf(CTDL_DEBUG, "No external notifiers configured on system/user");
 385                 return;
 386         }
 387
 388         if (doing_queue) return;
 389         doing_queue = 1;
 390
 391         citthread_setspecific(MyConKey, (void *)&extnotify_queue_CC);
 392
 393         /*
 394          * Go ahead and run the queue
 395          */
 396         CtdlLogPrintf(CTDL_DEBUG, "serv_extnotify: processing notify queue\n");
 397
 398         memset(&Ctx, 0, sizeof(NotifyContext));
 399         Ctx.NotifyHostList = GetNotifyHosts();
 400         if (CtdlGetRoom(&CC->room, FNBL_QUEUE_ROOM) != 0) {
 401                 CtdlLogPrintf(CTDL_ERR, "Cannot find room <%s>\n", FNBL_QUEUE_ROOM);
 402                 CtdlClearSystemContext();
 403                 return;
 404         }
 405         CtdlForEachMessage(MSGS_ALL, 0L, NULL,
 406                            SPOOLMIME, NULL, process_notify, &Ctx);
 407         CtdlLogPrintf(CTDL_DEBUG, "serv_extnotify: queue run completed\n");
 408         doing_queue = 0;
 409 }
 410
 411
 412
 413 /* Create the notify message queue. We use the exact same room
 414  * as the Funambol module.
 415  *
 416  * Run at server startup, creates FNBL_QUEUE_ROOM if it doesn't exist
 417  * and sets as system room.
 418  */
 419 void create_extnotify_queue(void) {
 420         struct ctdlroom qrbuf;
 421
 422         CtdlCreateRoom(FNBL_QUEUE_ROOM, 3, "", 0, 1, 0, VIEW_MAILBOX);
 423
 424         CtdlFillSystemContext(&extnotify_queue_CC, "Extnotify");
 425
 426         /*
 427          * Make sure it's set to be a "system room" so it doesn't show up
 428          * in the <K>nown rooms list for Aides.
 429          */
 430         if (CtdlGetRoomLock(&qrbuf, FNBL_QUEUE_ROOM) == 0) {
 431                 qrbuf.QRflags2 |= QR2_SYSTEM;
 432                 CtdlPutRoomLock(&qrbuf);
 433         }
 434 }
 435
 436 CTDL_MODULE_INIT(extnotify)
 437 {
 438         if (!threading)
 439         {
 440                 create_extnotify_queue();
 441                 CtdlRegisterSessionHook(do_extnotify_queue, EVT_TIMER);
 442         }
 443         /* return our Subversion id for the Log */
 444         return "extnotify";
 445 }