citadel/modules/network/serv_netspool.c

   1 /*
   2  * This module handles shared rooms, inter-Citadel mail, and outbound
   3  * mailing list processing.
   4  *
   5  * Copyright (c) 2000-2012 by the citadel.org team
   6  *
   7  *  This program is open source software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License, version 3.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  * ** NOTE **   A word on the S_NETCONFIGS semaphore:
  16  * This is a fairly high-level type of critical section.  It ensures that no
  17  * two threads work on the netconfigs files at the same time.  Since we do
  18  * so many things inside these, here are the rules:
  19  *  1. begin_critical_section(S_NETCONFIGS) *before* begin_ any others.
  20  *  2. Do *not* perform any I/O with the client during these sections.
  21  *
  22  */
  23
  24 /*
  25  * Duration of time (in seconds) after which pending list subscribe/unsubscribe
  26  * requests that have not been confirmed will be deleted.
  27  */
  28 #define EXP     259200  /* three days */
  29
  30 #include "sysdep.h"
  31 #include <stdlib.h>
  32 #include <unistd.h>
  33 #include <stdio.h>
  34 #include <fcntl.h>
  35 #include <ctype.h>
  36 #include <signal.h>
  37 #include <pwd.h>
  38 #include <errno.h>
  39 #include <sys/stat.h>
  40 #include <sys/types.h>
  41 #include <dirent.h>
  42 #if TIME_WITH_SYS_TIME
  43 # include <sys/time.h>
  44 # include <time.h>
  45 #else
  46 # if HAVE_SYS_TIME_H
  47 #  include <sys/time.h>
  48 # else
  49 #  include <time.h>
  50 # endif
  51 #endif
  52 #ifdef HAVE_SYSCALL_H
  53 # include <syscall.h>
  54 #else
  55 # if HAVE_SYS_SYSCALL_H
  56 #  include <sys/syscall.h>
  57 # endif
  58 #endif
  59
  60 #include <sys/wait.h>
  61 #include <string.h>
  62 #include <limits.h>
  63 #include <libcitadel.h>
  64 #include "citadel.h"
  65 #include "server.h"
  66 #include "citserver.h"
  67 #include "support.h"
  68 #include "config.h"
  69 #include "user_ops.h"
  70 #include "database.h"
  71 #include "msgbase.h"
  72 #include "internet_addressing.h"
  73 #include "serv_network.h"
  74 #include "clientsocket.h"
  75 #include "citadel_dirs.h"
  76 #include "threads.h"
  77 #include "context.h"
  78
  79 #include "ctdl_module.h"
  80
  81 #include "netspool.h"
  82 #include "netmail.h"
  83
  84
  85 #ifndef DT_UNKNOWN
  86 #define DT_UNKNOWN     0
  87 #define DT_DIR         4
  88 #define DT_REG         8
  89 #define DT_LNK         10
  90
  91 #define IFTODT(mode)   (((mode) & 0170000) >> 12)
  92 #define DTTOIF(dirtype)        ((dirtype) << 12)
  93 #endif
  94
  95
  96 void ParseLastSent(const CfgLineType *ThisOne, StrBuf *Line, const char *LinePos, OneRoomNetCfg *OneRNCFG)
  97 {
  98         RoomNetCfgLine *nptr;
  99         nptr = (RoomNetCfgLine *)
 100                 malloc(sizeof(RoomNetCfgLine));
 101         memset(nptr, 0, sizeof(RoomNetCfgLine));
 102         OneRNCFG->lastsent = extract_long(LinePos, 0);
 103         OneRNCFG->NetConfigs[ThisOne->C] = nptr;
 104 }
 105
 106 void ParseRoomAlias(const CfgLineType *ThisOne, StrBuf *Line, const char *LinePos, OneRoomNetCfg *rncfg)
 107 {
 108         if (rncfg->Sender != NULL)
 109                 return;
 110
 111         ParseGeneric(ThisOne, Line, LinePos, rncfg);
 112         rncfg->Sender = NewStrBufDup(rncfg->NetConfigs[roommailalias]->Value[0]);
 113 }
 114
 115 void ParseSubPendingLine(const CfgLineType *ThisOne, StrBuf *Line, const char *LinePos, OneRoomNetCfg *OneRNCFG)
 116 {
 117         if (time(NULL) - extract_long(LinePos, 3) > EXP)
 118                 return; /* expired subscription... */
 119
 120         ParseGeneric(ThisOne, Line, LinePos, OneRNCFG);
 121 }
 122 void ParseUnSubPendingLine(const CfgLineType *ThisOne, StrBuf *Line, const char *LinePos, OneRoomNetCfg *OneRNCFG)
 123 {
 124         if (time(NULL) - extract_long(LinePos, 2) > EXP)
 125                 return; /* expired subscription... */
 126
 127         ParseGeneric(ThisOne, Line, LinePos, OneRNCFG);
 128 }
 129
 130
 131 void SerializeLastSent(const CfgLineType *ThisOne, StrBuf *OutputBuffer, OneRoomNetCfg *RNCfg, RoomNetCfgLine *data)
 132 {
 133         StrBufAppendBufPlain(OutputBuffer, CKEY(ThisOne->Str), 0);
 134         StrBufAppendPrintf(OutputBuffer, "|%ld\n", RNCfg->lastsent);
 135 }
 136
 137 void DeleteLastSent(const CfgLineType *ThisOne, RoomNetCfgLine **data)
 138 {
 139         free(*data);
 140         *data = NULL;
 141 }
 142
 143 static const RoomNetCfg SpoolCfgs [4] = {
 144         listrecp,
 145         digestrecp,
 146         participate,
 147         ignet_push_share
 148 };
 149
 150 static const long SpoolCfgsCopyN [4] = {
 151         1, 1, 1, 2
 152 };
 153
 154 int HaveSpoolConfig(OneRoomNetCfg* RNCfg)
 155 {
 156         int i;
 157         int interested = 0;
 158         for (i=0; i < 4; i++) if (RNCfg->NetConfigs[SpoolCfgs[i]] == NULL) interested = 1;
 159         return interested;
 160 }
 161
 162 void Netmap_AddMe(struct CtdlMessage *msg, const char *defl, long defllen)
 163 {
 164         long node_len;
 165         char buf[SIZ];
 166
 167         /* prepend our node to the path */
 168         if (CM_IsEmpty(msg, eMessagePath)) {
 169                 CM_SetField(msg, eMessagePath, defl, defllen);
 170         }
 171         node_len = configlen.c_nodename;
 172         if (node_len >= SIZ)
 173                 node_len = SIZ - 1;
 174         memcpy(buf, config.c_nodename, node_len);
 175         buf[node_len] = '!';
 176         buf[node_len + 1] = '\0';
 177         CM_PrependToField(msg, eMessagePath, buf, node_len + 1);
 178 }
 179
 180 void InspectQueuedRoom(SpoolControl **pSC,
 181                        RoomProcList *room_to_spool,
 182                        HashList *working_ignetcfg,
 183                        HashList *the_netmap)
 184 {
 185         SpoolControl *sc;
 186         int i = 0;
 187
 188         sc = (SpoolControl*)malloc(sizeof(SpoolControl));
 189         memset(sc, 0, sizeof(SpoolControl));
 190         sc->RNCfg = room_to_spool->OneRNCfg;
 191         sc->lastsent = room_to_spool->lastsent;
 192         sc->working_ignetcfg = working_ignetcfg;
 193         sc->the_netmap = the_netmap;
 194
 195         /*
 196          * If the room doesn't exist, don't try to perform its networking tasks.
 197          * Normally this should never happen, but once in a while maybe a room gets
 198          * queued for networking and then deleted before it can happen.
 199          */
 200         if (CtdlGetRoom(&sc->room, room_to_spool->name) != 0) {
 201                 syslog(LOG_CRIT, "ERROR: cannot load <%s>\n", room_to_spool->name);
 202                 free(sc);
 203                 return;
 204         }
 205         if (sc->room.QRhighest <= sc->lastsent)
 206         {
 207                 syslog(LOG_DEBUG, "nothing to do for <%s>\n", room_to_spool->name);
 208                 free(sc);
 209                 return;
 210         }
 211
 212         begin_critical_section(S_NETCONFIGS);
 213         if (sc->RNCfg == NULL)
 214                 sc->RNCfg = CtdlGetNetCfgForRoom(sc->room.QRnumber);
 215
 216         if (!HaveSpoolConfig(sc->RNCfg))
 217         {
 218                 end_critical_section(S_NETCONFIGS);
 219                 free(sc);
 220                 /* nothing to do for this room... */
 221                 return;
 222         }
 223
 224         /* Now lets remember whats needed for the actual work... */
 225
 226         for (i=0; i < 4; i++)
 227         {
 228                 aggregate_recipients(&sc->Users[SpoolCfgs[i]],
 229                                      SpoolCfgs[i],
 230                                      sc->RNCfg,
 231                                      SpoolCfgsCopyN[i]);
 232         }
 233
 234         if (StrLength(sc->RNCfg->Sender) > 0)
 235                 sc->Users[roommailalias] = NewStrBufDup(sc->RNCfg->Sender);
 236         end_critical_section(S_NETCONFIGS);
 237
 238         sc->next = *pSC;
 239         *pSC = sc;
 240
 241 }
 242
 243 void CalcListID(SpoolControl *sc)
 244 {
 245         StrBuf *RoomName;
 246         const char *err;
 247         int fd;
 248         struct CitContext *CCC = CC;
 249         char filename[PATH_MAX];
 250 #define MAX_LISTIDLENGTH 150
 251
 252         assoc_file_name(filename, sizeof filename, &sc->room, ctdl_info_dir);
 253         fd = open(filename, 0);
 254
 255         if (fd > 0) {
 256                 struct stat stbuf;
 257
 258                 if ((fstat(fd, &stbuf) == 0) &&
 259                     (stbuf.st_size > 0))
 260                 {
 261                         sc->RoomInfo = NewStrBufPlain(NULL, stbuf.st_size + 1);
 262                         StrBufReadBLOB(sc->RoomInfo, &fd, 0, stbuf.st_size, &err);
 263                 }
 264                 close(fd);
 265         }
 266
 267         sc->ListID = NewStrBufPlain(NULL, 1024);
 268         if (StrLength(sc->RoomInfo) > 0)
 269         {
 270                 const char *Pos = NULL;
 271                 StrBufSipLine(sc->ListID, sc->RoomInfo, &Pos);
 272
 273                 if (StrLength(sc->ListID) > MAX_LISTIDLENGTH)
 274                 {
 275                         StrBufCutAt(sc->ListID, MAX_LISTIDLENGTH, NULL);
 276                         StrBufAppendBufPlain(sc->ListID, HKEY("..."), 0);
 277                 }
 278                 StrBufAsciify(sc->ListID, ' ');
 279         }
 280         else
 281         {
 282                 StrBufAppendBufPlain(sc->ListID, CCC->room.QRname, -1, 0);
 283         }
 284
 285         StrBufAppendBufPlain(sc->ListID, HKEY("<"), 0);
 286         RoomName = NewStrBufPlain (sc->room.QRname, -1);
 287         StrBufAsciify(RoomName, '_');
 288         StrBufReplaceChars(RoomName, ' ', '_');
 289
 290         if (StrLength(sc->Users[roommailalias]) > 0)
 291         {
 292                 long Pos;
 293                 const char *AtPos;
 294
 295                 Pos = StrLength(sc->ListID);
 296                 StrBufAppendBuf(sc->ListID, sc->Users[roommailalias], 0);
 297                 AtPos = strchr(ChrPtr(sc->ListID) + Pos, '@');
 298
 299                 if (AtPos != NULL)
 300                 {
 301                         StrBufPeek(sc->ListID, AtPos, 0, '.');
 302                 }
 303         }
 304         else
 305         {
 306                 StrBufAppendBufPlain(sc->ListID, HKEY("room_"), 0);
 307                 StrBufAppendBuf(sc->ListID, RoomName, 0);
 308                 StrBufAppendBufPlain(sc->ListID, HKEY("."), 0);
 309                 StrBufAppendBufPlain(sc->ListID, config.c_fqdn, -1, 0);
 310                 /*
 311                  * this used to be:
 312                  * roomname <Room-Number.list-id.fqdn>
 313                  * according to rfc2919.txt it only has to be a uniq identifier
 314                  * under the domain of the system;
 315                  * in general MUAs use it to calculate the reply address nowadays.
 316                  */
 317         }
 318         StrBufAppendBufPlain(sc->ListID, HKEY(">"), 0);
 319
 320         if (StrLength(sc->Users[roommailalias]) == 0)
 321         {
 322                 sc->Users[roommailalias] = NewStrBuf();
 323
 324                 StrBufAppendBufPlain(sc->Users[roommailalias], HKEY("room_"), 0);
 325                 StrBufAppendBuf(sc->Users[roommailalias], RoomName, 0);
 326                 StrBufAppendBufPlain(sc->Users[roommailalias], HKEY("@"), 0);
 327                 StrBufAppendBufPlain(sc->Users[roommailalias], config.c_fqdn, -1, 0);
 328
 329                 StrBufLowerCase(sc->Users[roommailalias]);
 330         }
 331
 332         FreeStrBuf(&RoomName);
 333 }
 334
 335 static time_t last_digest_delivery = 0;
 336
 337 /*
 338  * Batch up and send all outbound traffic from the current room
 339  */
 340 void network_spoolout_room(SpoolControl *sc)
 341 {
 342         struct CitContext *CCC = CC;
 343         char buf[SIZ];
 344         int i;
 345         long lastsent;
 346
 347         /*
 348          * If the room doesn't exist, don't try to perform its networking tasks.
 349          * Normally this should never happen, but once in a while maybe a room gets
 350          * queued for networking and then deleted before it can happen.
 351          */
 352         memcpy (&CCC->room, &sc->room, sizeof(ctdlroom));
 353
 354         syslog(LOG_INFO, "Networking started for <%s>\n", CCC->room.QRname);
 355
 356         /* If there are digest recipients, we have to build a digest */
 357         if (sc->Users[digestrecp] != NULL) {
 358
 359                 sc->digestfp = create_digest_file(&sc->room);
 360                 sc->haveDigest = ftell(sc->digestfp) > 0;
 361                 if (!sc->haveDigest) {
 362                         fprintf(sc->digestfp, "Content-type: text/plain\n\n");
 363                 }
 364         }
 365
 366         CalcListID(sc);
 367
 368         /* remember where we started... */
 369         lastsent = sc->lastsent;
 370
 371         /* Fetch the messages we ought to send & prepare them. */
 372         CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
 373                 network_spool_msg, sc);
 374
 375         if (StrLength(sc->Users[roommailalias]) > 0)
 376         {
 377                 long len;
 378                 len = StrLength(sc->Users[roommailalias]);
 379                 if (len + 1 > sizeof(buf))
 380                         len = sizeof(buf) - 1;
 381                 memcpy(buf, ChrPtr(sc->Users[roommailalias]), len);
 382                 buf[len] = '\0';
 383         }
 384         else
 385         {
 386                 snprintf(buf, sizeof buf, "room_%s@%s",
 387                          CCC->room.QRname, config.c_fqdn);
 388         }
 389
 390         for (i=0; buf[i]; ++i) {
 391                 buf[i] = tolower(buf[i]);
 392                 if (isspace(buf[i])) buf[i] = '_';
 393         }
 394
 395
 396         /* If we wrote a digest, deliver it and then close it */
 397         if (sc->digestfp != NULL) {
 398                 time_t now = time(NULL);
 399                 time_t secs_today = now % (24 * 60 * 60);
 400                 long delta = 0;
 401
 402                 if (last_digest_delivery != 0) {
 403                         delta = now - last_digest_delivery;
 404                         delta = (24 * 60 * 60) - delta;
 405                 }
 406
 407                 if (sc->haveDigest     &&
 408                     (secs_today < 300) &&
 409                     (delta < 300) )
 410                 {
 411                         last_digest_delivery = now;
 412                         fprintf(sc->digestfp,
 413                                 " -----------------------------------"
 414                                 "------------------------------------"
 415                                 "-------\n"
 416                                 "You are subscribed to the '%s' "
 417                                 "list.\n"
 418                                 "To post to the list: %s\n",
 419                                 CCC->room.QRname, buf
 420                                 );
 421                         network_deliver_digest(sc);     /* deliver */
 422                 }
 423                 fclose(sc->digestfp);
 424                 sc->digestfp = NULL;
 425                 remove_digest_file(&sc->room);
 426         }
 427
 428         /* Now rewrite the config file */
 429         if (sc->lastsent != lastsent)
 430         {
 431                 begin_critical_section(S_NETCONFIGS);
 432                 sc->RNCfg = CtdlGetNetCfgForRoom(sc->room.QRnumber);
 433
 434                 sc->RNCfg->lastsent = sc->lastsent;
 435                 sc->RNCfg->changed = 1;
 436                 end_critical_section(S_NETCONFIGS);
 437         }
 438 }
 439
 440 /*
 441  * Process a buffer containing a single message from a single file
 442  * from the inbound queue
 443  */
 444 void network_process_buffer(char *buffer, long size, HashList *working_ignetcfg, HashList *the_netmap, int *netmap_changed)
 445 {
 446         long len;
 447         struct CitContext *CCC = CC;
 448         StrBuf *Buf = NULL;
 449         struct CtdlMessage *msg = NULL;
 450         long pos;
 451         int field;
 452         recptypes *recp = NULL;
 453         char target_room[ROOMNAMELEN];
 454         struct ser_ret sermsg;
 455         char filename[PATH_MAX];
 456         FILE *fp;
 457         const StrBuf *nexthop = NULL;
 458         unsigned char firstbyte;
 459         unsigned char lastbyte;
 460
 461         QN_syslog(LOG_DEBUG, "network_process_buffer() processing %ld bytes\n", size);
 462
 463         /* Validate just a little bit.  First byte should be FF and * last byte should be 00. */
 464         firstbyte = buffer[0];
 465         lastbyte = buffer[size-1];
 466         if ( (firstbyte != 255) || (lastbyte != 0) ) {
 467                 QN_syslog(LOG_ERR, "Corrupt message ignored.  Length=%ld, firstbyte = %d, lastbyte = %d\n",
 468                           size, firstbyte, lastbyte);
 469                 return;
 470         }
 471
 472         /* Set default target room to trash */
 473         strcpy(target_room, TWITROOM);
 474
 475         /* Load the message into memory */
 476         msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
 477         memset(msg, 0, sizeof(struct CtdlMessage));
 478         msg->cm_magic = CTDLMESSAGE_MAGIC;
 479         msg->cm_anon_type = buffer[1];
 480         msg->cm_format_type = buffer[2];
 481
 482         for (pos = 3; pos < size; ++pos) {
 483                 field = buffer[pos];
 484                 len = strlen(buffer + pos + 1);
 485                 CM_SetField(msg, field, buffer + pos + 1, len);
 486                 pos = pos + len + 1;
 487         }
 488
 489         /* Check for message routing */
 490         if (!CM_IsEmpty(msg, eDestination)) {
 491                 if (strcasecmp(msg->cm_fields[eDestination], config.c_nodename)) {
 492
 493                         /* route the message */
 494                         Buf = NewStrBufPlain(CM_KEY(msg,eDestination));
 495                         if (CtdlIsValidNode(&nexthop,
 496                                             NULL,
 497                                             Buf,
 498                                             working_ignetcfg,
 499                                             the_netmap) == 0)
 500                         {
 501                                 Netmap_AddMe(msg, HKEY("unknown_user"));
 502
 503                                 /* serialize the message */
 504                                 CtdlSerializeMessage(&sermsg, msg);
 505
 506                                 /* now send it */
 507                                 if (StrLength(nexthop) == 0) {
 508                                         nexthop = Buf;
 509                                 }
 510                                 snprintf(filename,
 511                                          sizeof filename,
 512                                          "%s/%s@%lx%x",
 513                                          ctdl_netout_dir,
 514                                          ChrPtr(nexthop),
 515                                          time(NULL),
 516                                          rand()
 517                                 );
 518                                 QN_syslog(LOG_DEBUG, "Appending to %s\n", filename);
 519                                 fp = fopen(filename, "ab");
 520                                 if (fp != NULL) {
 521                                         fwrite(sermsg.ser, sermsg.len, 1, fp);
 522                                         fclose(fp);
 523                                 }
 524                                 else {
 525                                         QN_syslog(LOG_ERR, "%s: %s\n", filename, strerror(errno));
 526                                 }
 527                                 free(sermsg.ser);
 528                                 CM_Free(msg);
 529                                 FreeStrBuf(&Buf);
 530                                 return;
 531                         }
 532
 533                         else {  /* invalid destination node name */
 534                                 FreeStrBuf(&Buf);
 535
 536                                 network_bounce(msg,
 537 "A message you sent could not be delivered due to an invalid destination node"
 538 " name.  Please check the address and try sending the message again.\n");
 539                                 msg = NULL;
 540                                 return;
 541
 542                         }
 543                 }
 544         }
 545
 546         /*
 547          * Check to see if we already have a copy of this message, and
 548          * abort its processing if so.  (We used to post a warning to Aide>
 549          * every time this happened, but the network is now so densely
 550          * connected that it's inevitable.)
 551          */
 552         if (network_usetable(msg) != 0) {
 553                 CM_Free(msg);
 554                 return;
 555         }
 556
 557         /* Learn network topology from the path */
 558         if (!CM_IsEmpty(msg, eNodeName) && !CM_IsEmpty(msg, eMessagePath)) {
 559                 NetworkLearnTopology(msg->cm_fields[eNodeName],
 560                                      msg->cm_fields[eMessagePath],
 561                                      the_netmap,
 562                                      netmap_changed);
 563         }
 564
 565         /* Is the sending node giving us a very persuasive suggestion about
 566          * which room this message should be saved in?  If so, go with that.
 567          */
 568         if (!CM_IsEmpty(msg, eRemoteRoom)) {
 569                 safestrncpy(target_room, msg->cm_fields[eRemoteRoom], sizeof target_room);
 570         }
 571
 572         /* Otherwise, does it have a recipient?  If so, validate it... */
 573         else if (!CM_IsEmpty(msg, eRecipient)) {
 574                 recp = validate_recipients(msg->cm_fields[eRecipient], NULL, 0);
 575                 if (recp != NULL) if (recp->num_error != 0) {
 576                         network_bounce(msg,
 577                                 "A message you sent could not be delivered due to an invalid address.\n"
 578                                 "Please check the address and try sending the message again.\n");
 579                         msg = NULL;
 580                         free_recipients(recp);
 581                         QNM_syslog(LOG_DEBUG, "Bouncing message due to invalid recipient address.\n");
 582                         return;
 583                 }
 584                 strcpy(target_room, "");        /* no target room if mail */
 585         }
 586
 587         /* Our last shot at finding a home for this message is to see if
 588          * it has the eOriginalRoom (O) field (Originating room) set.
 589          */
 590         else if (!CM_IsEmpty(msg, eOriginalRoom)) {
 591                 safestrncpy(target_room, msg->cm_fields[eOriginalRoom], sizeof target_room);
 592         }
 593
 594         /* Strip out fields that are only relevant during transit */
 595         CM_FlushField(msg, eDestination);
 596         CM_FlushField(msg, eRemoteRoom);
 597
 598         /* save the message into a room */
 599         if (PerformNetprocHooks(msg, target_room) == 0) {
 600                 msg->cm_flags = CM_SKIP_HOOKS;
 601                 CtdlSubmitMsg(msg, recp, target_room, 0);
 602         }
 603         CM_Free(msg);
 604         free_recipients(recp);
 605 }
 606
 607
 608 /*
 609  * Process a single message from a single file from the inbound queue
 610  */
 611 void network_process_message(FILE *fp,
 612                              long msgstart,
 613                              long msgend,
 614                              HashList *working_ignetcfg,
 615                              HashList *the_netmap,
 616                              int *netmap_changed)
 617 {
 618         long hold_pos;
 619         long size;
 620         char *buffer;
 621
 622         hold_pos = ftell(fp);
 623         size = msgend - msgstart + 1;
 624         buffer = malloc(size);
 625         if (buffer != NULL) {
 626                 fseek(fp, msgstart, SEEK_SET);
 627                 if (fread(buffer, size, 1, fp) > 0) {
 628                         network_process_buffer(buffer,
 629                                                size,
 630                                                working_ignetcfg,
 631                                                the_netmap,
 632                                                netmap_changed);
 633                 }
 634                 free(buffer);
 635         }
 636
 637         fseek(fp, hold_pos, SEEK_SET);
 638 }
 639
 640
 641 /*
 642  * Process a single file from the inbound queue
 643  */
 644 void network_process_file(char *filename,
 645                           HashList *working_ignetcfg,
 646                           HashList *the_netmap,
 647                           int *netmap_changed)
 648 {
 649         struct CitContext *CCC = CC;
 650         FILE *fp;
 651         long msgstart = (-1L);
 652         long msgend = (-1L);
 653         long msgcur = 0L;
 654         int ch;
 655         int nMessages = 0;
 656
 657         fp = fopen(filename, "rb");
 658         if (fp == NULL) {
 659                 QN_syslog(LOG_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
 660                 return;
 661         }
 662
 663         fseek(fp, 0L, SEEK_END);
 664         QN_syslog(LOG_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
 665         rewind(fp);
 666
 667         /* Look for messages in the data stream and break them out */
 668         while (ch = getc(fp), ch >= 0) {
 669
 670                 if (ch == 255) {
 671                         if (msgstart >= 0L) {
 672                                 msgend = msgcur - 1;
 673                                 network_process_message(fp,
 674                                                         msgstart,
 675                                                         msgend,
 676                                                         working_ignetcfg,
 677                                                         the_netmap,
 678                                                         netmap_changed);
 679                         }
 680                         msgstart = msgcur;
 681                 }
 682
 683                 ++msgcur;
 684                 nMessages ++;
 685         }
 686
 687         msgend = msgcur - 1;
 688         if (msgstart >= 0L) {
 689                 network_process_message(fp,
 690                                         msgstart,
 691                                         msgend,
 692                                         working_ignetcfg,
 693                                         the_netmap,
 694                                         netmap_changed);
 695                 nMessages ++;
 696         }
 697
 698         if (nMessages > 0)
 699                 QN_syslog(LOG_INFO,
 700                           "network: processed %d messages in %s\n",
 701                           nMessages,
 702                           filename);
 703
 704         fclose(fp);
 705         unlink(filename);
 706 }
 707
 708
 709 /*
 710  * Process anything in the inbound queue
 711  */
 712 void network_do_spoolin(HashList *working_ignetcfg, HashList *the_netmap, int *netmap_changed)
 713 {
 714         struct CitContext *CCC = CC;
 715         DIR *dp;
 716         struct dirent *d;
 717         struct dirent *filedir_entry;
 718         struct stat statbuf;
 719         char filename[PATH_MAX];
 720         static time_t last_spoolin_mtime = 0L;
 721         int d_type = 0;
 722         int d_namelen;
 723
 724         /*
 725          * Check the spoolin directory's modification time.  If it hasn't
 726          * been touched, we don't need to scan it.
 727          */
 728         if (stat(ctdl_netin_dir, &statbuf)) return;
 729         if (statbuf.st_mtime == last_spoolin_mtime) {
 730                 QNM_syslog(LOG_DEBUG, "network: nothing in inbound queue\n");
 731                 return;
 732         }
 733         last_spoolin_mtime = statbuf.st_mtime;
 734         QNM_syslog(LOG_DEBUG, "network: processing inbound queue\n");
 735
 736         /*
 737          * Ok, there's something interesting in there, so scan it.
 738          */
 739         dp = opendir(ctdl_netin_dir);
 740         if (dp == NULL) return;
 741
 742         d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 1);
 743         if (d == NULL) {
 744                 closedir(dp);
 745                 return;
 746         }
 747
 748         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 749                (filedir_entry != NULL))
 750         {
 751 #ifdef _DIRENT_HAVE_D_NAMLEN
 752                 d_namelen = filedir_entry->d_namlen;
 753
 754 #else
 755                 d_namelen = strlen(filedir_entry->d_name);
 756 #endif
 757
 758 #ifdef _DIRENT_HAVE_D_TYPE
 759                 d_type = filedir_entry->d_type;
 760 #else
 761                 d_type = DT_UNKNOWN;
 762 #endif
 763                 if ((d_namelen > 1) && filedir_entry->d_name[d_namelen - 1] == '~')
 764                         continue; /* Ignore backup files... */
 765
 766                 if ((d_namelen == 1) &&
 767                     (filedir_entry->d_name[0] == '.'))
 768                         continue;
 769
 770                 if ((d_namelen == 2) &&
 771                     (filedir_entry->d_name[0] == '.') &&
 772                     (filedir_entry->d_name[1] == '.'))
 773                         continue;
 774
 775                 if (d_type == DT_UNKNOWN) {
 776                         struct stat s;
 777                         char path[PATH_MAX];
 778
 779                         snprintf(path,
 780                                  PATH_MAX,
 781                                  "%s/%s",
 782                                  ctdl_netin_dir,
 783                                  filedir_entry->d_name);
 784
 785                         if (lstat(path, &s) == 0) {
 786                                 d_type = IFTODT(s.st_mode);
 787                         }
 788                 }
 789
 790                 switch (d_type)
 791                 {
 792                 case DT_DIR:
 793                         break;
 794                 case DT_LNK: /* TODO: check whether its a file or a directory */
 795                 case DT_REG:
 796                         snprintf(filename,
 797                                 sizeof filename,
 798                                 "%s/%s",
 799                                 ctdl_netin_dir,
 800                                 d->d_name
 801                         );
 802                         network_process_file(filename,
 803                                              working_ignetcfg,
 804                                              the_netmap,
 805                                              netmap_changed);
 806                 }
 807         }
 808
 809         closedir(dp);
 810         free(d);
 811 }
 812
 813 /*
 814  * Step 1: consolidate files in the outbound queue into one file per neighbor node
 815  * Step 2: delete any files in the outbound queue that were for neighbors who no longer exist.
 816  */
 817 void network_consolidate_spoolout(HashList *working_ignetcfg, HashList *the_netmap)
 818 {
 819         struct CitContext *CCC = CC;
 820         IOBuffer IOB;
 821         FDIOBuffer FDIO;
 822         int d_namelen;
 823         DIR *dp;
 824         struct dirent *d;
 825         struct dirent *filedir_entry;
 826         const char *pch;
 827         char spooloutfilename[PATH_MAX];
 828         char filename[PATH_MAX];
 829         const StrBuf *nexthop;
 830         StrBuf *NextHop;
 831         int i;
 832         struct stat statbuf;
 833         int nFailed = 0;
 834         int d_type = 0;
 835
 836
 837         /* Step 1: consolidate files in the outbound queue into one file per neighbor node */
 838         d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 1);
 839         if (d == NULL)  return;
 840
 841         dp = opendir(ctdl_netout_dir);
 842         if (dp == NULL) {
 843                 free(d);
 844                 return;
 845         }
 846
 847         NextHop = NewStrBuf();
 848         memset(&IOB, 0, sizeof(IOBuffer));
 849         memset(&FDIO, 0, sizeof(FDIOBuffer));
 850         FDIO.IOB = &IOB;
 851
 852         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 853                (filedir_entry != NULL))
 854         {
 855 #ifdef _DIRENT_HAVE_D_NAMLEN
 856                 d_namelen = filedir_entry->d_namlen;
 857
 858 #else
 859                 d_namelen = strlen(filedir_entry->d_name);
 860 #endif
 861
 862 #ifdef _DIRENT_HAVE_D_TYPE
 863                 d_type = filedir_entry->d_type;
 864 #else
 865                 d_type = DT_UNKNOWN;
 866 #endif
 867                 if (d_type == DT_DIR)
 868                         continue;
 869
 870                 if ((d_namelen > 1) && filedir_entry->d_name[d_namelen - 1] == '~')
 871                         continue; /* Ignore backup files... */
 872
 873                 if ((d_namelen == 1) &&
 874                     (filedir_entry->d_name[0] == '.'))
 875                         continue;
 876
 877                 if ((d_namelen == 2) &&
 878                     (filedir_entry->d_name[0] == '.') &&
 879                     (filedir_entry->d_name[1] == '.'))
 880                         continue;
 881
 882                 pch = strchr(filedir_entry->d_name, '@');
 883                 if (pch == NULL)
 884                         continue;
 885
 886                 snprintf(filename,
 887                          sizeof filename,
 888                          "%s/%s",
 889                          ctdl_netout_dir,
 890                          filedir_entry->d_name);
 891
 892                 StrBufPlain(NextHop,
 893                             filedir_entry->d_name,
 894                             pch - filedir_entry->d_name);
 895
 896                 snprintf(spooloutfilename,
 897                          sizeof spooloutfilename,
 898                          "%s/%s",
 899                          ctdl_netout_dir,
 900                          ChrPtr(NextHop));
 901
 902                 QN_syslog(LOG_DEBUG, "Consolidate %s to %s\n", filename, ChrPtr(NextHop));
 903                 if (CtdlNetworkTalkingTo(SKEY(NextHop), NTT_CHECK)) {
 904                         nFailed++;
 905                         QN_syslog(LOG_DEBUG,
 906                                   "Currently online with %s - skipping for now\n",
 907                                   ChrPtr(NextHop)
 908                                 );
 909                 }
 910                 else {
 911                         size_t dsize;
 912                         size_t fsize;
 913                         int infd, outfd;
 914                         const char *err = NULL;
 915                         CtdlNetworkTalkingTo(SKEY(NextHop), NTT_ADD);
 916
 917                         infd = open(filename, O_RDONLY);
 918                         if (infd == -1) {
 919                                 nFailed++;
 920                                 QN_syslog(LOG_ERR,
 921                                           "failed to open %s for reading due to %s; skipping.\n",
 922                                           filename, strerror(errno)
 923                                         );
 924                                 CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 925                                 continue;
 926                         }
 927
 928                         outfd = open(spooloutfilename,
 929                                   O_EXCL|O_CREAT|O_NONBLOCK|O_WRONLY,
 930                                   S_IRUSR|S_IWUSR);
 931                         if (outfd == -1)
 932                         {
 933                                 outfd = open(spooloutfilename,
 934                                              O_EXCL|O_NONBLOCK|O_WRONLY,
 935                                              S_IRUSR | S_IWUSR);
 936                         }
 937                         if (outfd == -1) {
 938                                 nFailed++;
 939                                 QN_syslog(LOG_ERR,
 940                                           "failed to open %s for reading due to %s; skipping.\n",
 941                                           spooloutfilename, strerror(errno)
 942                                         );
 943                                 close(infd);
 944                                 CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 945                                 continue;
 946                         }
 947
 948                         dsize = lseek(outfd, 0, SEEK_END);
 949                         lseek(outfd, -dsize, SEEK_SET);
 950
 951                         fstat(infd, &statbuf);
 952                         fsize = statbuf.st_size;
 953 /*
 954                         fsize = lseek(infd, 0, SEEK_END);
 955 */
 956                         IOB.fd = infd;
 957                         FDIOBufferInit(&FDIO, &IOB, outfd, fsize + dsize);
 958                         FDIO.ChunkSendRemain = fsize;
 959                         FDIO.TotalSentAlready = dsize;
 960                         err = NULL;
 961                         errno = 0;
 962                         do {} while ((FileMoveChunked(&FDIO, &err) > 0) && (err == NULL));
 963                         if (err == NULL) {
 964                                 unlink(filename);
 965                                 QN_syslog(LOG_DEBUG,
 966                                           "Spoolfile %s now "SIZE_T_FMT" k\n",
 967                                           spooloutfilename,
 968                                           (dsize + fsize)/1024
 969                                         );
 970                         }
 971                         else {
 972                                 nFailed++;
 973                                 QN_syslog(LOG_ERR,
 974                                           "failed to append to %s [%s]; rolling back..\n",
 975                                           spooloutfilename, strerror(errno)
 976                                         );
 977                                 /* whoops partial append?? truncate spooloutfilename again! */
 978                                 ftruncate(outfd, dsize);
 979                         }
 980                         FDIOBufferDelete(&FDIO);
 981                         close(infd);
 982                         close(outfd);
 983                         CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 984                 }
 985         }
 986         closedir(dp);
 987
 988         if (nFailed > 0) {
 989                 FreeStrBuf(&NextHop);
 990                 QN_syslog(LOG_INFO,
 991                           "skipping Spoolcleanup because of %d files unprocessed.\n",
 992                           nFailed
 993                         );
 994
 995                 return;
 996         }
 997
 998         /* Step 2: delete any files in the outbound queue that were for neighbors who no longer exist */
 999         dp = opendir(ctdl_netout_dir);
1000         if (dp == NULL) {
1001                 FreeStrBuf(&NextHop);
1002                 free(d);
1003                 return;
1004         }
1005
1006         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
1007                (filedir_entry != NULL))
1008         {
1009 #ifdef _DIRENT_HAVE_D_NAMLEN
1010                 d_namelen = filedir_entry->d_namlen;
1011
1012 #else
1013                 d_namelen = strlen(filedir_entry->d_name);
1014 #endif
1015
1016 #ifdef _DIRENT_HAVE_D_TYPE
1017                 d_type = filedir_entry->d_type;
1018 #else
1019                 d_type = DT_UNKNOWN;
1020 #endif
1021                 if (d_type == DT_DIR)
1022                         continue;
1023
1024                 if ((d_namelen == 1) &&
1025                     (filedir_entry->d_name[0] == '.'))
1026                         continue;
1027
1028                 if ((d_namelen == 2) &&
1029                     (filedir_entry->d_name[0] == '.') &&
1030                     (filedir_entry->d_name[1] == '.'))
1031                         continue;
1032
1033                 pch = strchr(filedir_entry->d_name, '@');
1034                 if (pch == NULL) /* no @ in name? consolidated file. */
1035                         continue;
1036
1037                 StrBufPlain(NextHop,
1038                             filedir_entry->d_name,
1039                             pch - filedir_entry->d_name);
1040
1041                 snprintf(filename,
1042                         sizeof filename,
1043                         "%s/%s",
1044                         ctdl_netout_dir,
1045                         filedir_entry->d_name
1046                 );
1047
1048                 i = CtdlIsValidNode(&nexthop,
1049                                     NULL,
1050                                     NextHop,
1051                                     working_ignetcfg,
1052                                     the_netmap);
1053
1054                 if ( (i != 0) || (StrLength(nexthop) > 0) ) {
1055                         unlink(filename);
1056                 }
1057         }
1058         FreeStrBuf(&NextHop);
1059         free(d);
1060         closedir(dp);
1061 }
1062
1063 void free_spoolcontrol_struct(SpoolControl **sc)
1064 {
1065         free_spoolcontrol_struct_members(*sc);
1066         free(*sc);
1067         *sc = NULL;
1068 }
1069
1070 void free_spoolcontrol_struct_members(SpoolControl *sc)
1071 {
1072         int i;
1073         FreeStrBuf(&sc->RoomInfo);
1074         FreeStrBuf(&sc->ListID);
1075         for (i = 0; i < maxRoomNetCfg; i++)
1076                 FreeStrBuf(&sc->Users[i]);
1077 }
1078
1079
1080
1081 /*
1082  * It's ok if these directories already exist.  Just fail silently.
1083  */
1084 void create_spool_dirs(void) {
1085         if ((mkdir(ctdl_spool_dir, 0700) != 0) && (errno != EEXIST))
1086                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_spool_dir, strerror(errno));
1087         if (chown(ctdl_spool_dir, CTDLUID, (-1)) != 0)
1088                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_spool_dir, strerror(errno));
1089         if ((mkdir(ctdl_netin_dir, 0700) != 0) && (errno != EEXIST))
1090                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_netin_dir, strerror(errno));
1091         if (chown(ctdl_netin_dir, CTDLUID, (-1)) != 0)
1092                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netin_dir, strerror(errno));
1093         if ((mkdir(ctdl_nettmp_dir, 0700) != 0) && (errno != EEXIST))
1094                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_nettmp_dir, strerror(errno));
1095         if (chown(ctdl_nettmp_dir, CTDLUID, (-1)) != 0)
1096                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_nettmp_dir, strerror(errno));
1097         if ((mkdir(ctdl_netout_dir, 0700) != 0) && (errno != EEXIST))
1098                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_netout_dir, strerror(errno));
1099         if (chown(ctdl_netout_dir, CTDLUID, (-1)) != 0)
1100                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netout_dir, strerror(errno));
1101 }
1102
1103 /*
1104  * Module entry point
1105  */
1106 CTDL_MODULE_INIT(network_spool)
1107 {
1108         if (!threading)
1109         {
1110                 CtdlREGISTERRoomCfgType(subpending,       ParseSubPendingLine,   0, 5, SerializeGeneric,  DeleteGenericCfgLine); /// todo: move this to mailinglist manager
1111                 CtdlREGISTERRoomCfgType(unsubpending,     ParseUnSubPendingLine, 0, 4, SerializeGeneric,  DeleteGenericCfgLine); /// todo: move this to mailinglist manager
1112                 CtdlREGISTERRoomCfgType(lastsent,         ParseLastSent,         1, 1, SerializeLastSent, DeleteLastSent);
1113                 CtdlREGISTERRoomCfgType(ignet_push_share, ParseGeneric,          0, 2, SerializeGeneric,  DeleteGenericCfgLine); // [remotenode|remoteroomname (optional)]// todo: move this to the ignet client
1114                 CtdlREGISTERRoomCfgType(listrecp,         ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
1115                 CtdlREGISTERRoomCfgType(digestrecp,       ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
1116                 CtdlREGISTERRoomCfgType(participate,      ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
1117                 CtdlREGISTERRoomCfgType(roommailalias,    ParseRoomAlias,        0, 1, SerializeGeneric,  DeleteGenericCfgLine);
1118
1119                 create_spool_dirs();
1120 //////todo              CtdlRegisterCleanupHook(destroy_network_queue_room);
1121         }
1122         return "network_spool";
1123 }