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         if (sc->RNCfg == NULL)
 213                 sc->RNCfg = CtdlGetNetCfgForRoom(sc->room.QRnumber);
 214
 215         if (!HaveSpoolConfig(sc->RNCfg))
 216         {
 217                 free(sc);
 218                 /* nothing to do for this room... */
 219                 return;
 220         }
 221
 222         /* Now lets remember whats needed for the actual work... */
 223
 224         for (i=0; i < 4; i++)
 225         {
 226                 aggregate_recipients(&sc->Users[SpoolCfgs[i]],
 227                                      SpoolCfgs[i],
 228                                      sc->RNCfg,
 229                                      SpoolCfgsCopyN[i]);
 230         }
 231
 232         if (StrLength(sc->RNCfg->Sender) > 0)
 233                 sc->Users[roommailalias] = NewStrBufDup(sc->RNCfg->Sender);
 234
 235         sc->next = *pSC;
 236         *pSC = sc;
 237
 238 }
 239
 240 void CalcListID(SpoolControl *sc)
 241 {
 242         StrBuf *RoomName;
 243         const char *err;
 244         int fd;
 245         struct CitContext *CCC = CC;
 246         char filename[PATH_MAX];
 247 #define MAX_LISTIDLENGTH 150
 248
 249         assoc_file_name(filename, sizeof filename, &sc->room, ctdl_info_dir);
 250         fd = open(filename, 0);
 251
 252         if (fd > 0) {
 253                 struct stat stbuf;
 254
 255                 if ((fstat(fd, &stbuf) == 0) &&
 256                     (stbuf.st_size > 0))
 257                 {
 258                         sc->RoomInfo = NewStrBufPlain(NULL, stbuf.st_size + 1);
 259                         StrBufReadBLOB(sc->RoomInfo, &fd, 0, stbuf.st_size, &err);
 260                 }
 261                 close(fd);
 262         }
 263
 264         sc->ListID = NewStrBufPlain(NULL, 1024);
 265         if (StrLength(sc->RoomInfo) > 0)
 266         {
 267                 const char *Pos = NULL;
 268                 StrBufSipLine(sc->ListID, sc->RoomInfo, &Pos);
 269
 270                 if (StrLength(sc->ListID) > MAX_LISTIDLENGTH)
 271                 {
 272                         StrBufCutAt(sc->ListID, MAX_LISTIDLENGTH, NULL);
 273                         StrBufAppendBufPlain(sc->ListID, HKEY("..."), 0);
 274                 }
 275                 StrBufAsciify(sc->ListID, ' ');
 276         }
 277         else
 278         {
 279                 StrBufAppendBufPlain(sc->ListID, CCC->room.QRname, -1, 0);
 280         }
 281
 282         StrBufAppendBufPlain(sc->ListID, HKEY("<"), 0);
 283         RoomName = NewStrBufPlain (sc->room.QRname, -1);
 284         StrBufAsciify(RoomName, '_');
 285         StrBufReplaceChars(RoomName, ' ', '_');
 286
 287         if (StrLength(sc->Users[roommailalias]) > 0)
 288         {
 289                 long Pos;
 290                 const char *AtPos;
 291
 292                 Pos = StrLength(sc->ListID);
 293                 StrBufAppendBuf(sc->ListID, sc->Users[roommailalias], 0);
 294                 AtPos = strchr(ChrPtr(sc->ListID) + Pos, '@');
 295
 296                 if (AtPos != NULL)
 297                 {
 298                         StrBufPeek(sc->ListID, AtPos, 0, '.');
 299                 }
 300         }
 301         else
 302         {
 303                 StrBufAppendBufPlain(sc->ListID, HKEY("room_"), 0);
 304                 StrBufAppendBuf(sc->ListID, RoomName, 0);
 305                 StrBufAppendBufPlain(sc->ListID, HKEY("."), 0);
 306                 StrBufAppendBufPlain(sc->ListID, config.c_fqdn, -1, 0);
 307                 /*
 308                  * this used to be:
 309                  * roomname <Room-Number.list-id.fqdn>
 310                  * according to rfc2919.txt it only has to be a uniq identifier
 311                  * under the domain of the system;
 312                  * in general MUAs use it to calculate the reply address nowadays.
 313                  */
 314         }
 315         StrBufAppendBufPlain(sc->ListID, HKEY(">"), 0);
 316
 317         if (StrLength(sc->Users[roommailalias]) == 0)
 318         {
 319                 sc->Users[roommailalias] = NewStrBuf();
 320
 321                 StrBufAppendBufPlain(sc->Users[roommailalias], HKEY("room_"), 0);
 322                 StrBufAppendBuf(sc->Users[roommailalias], RoomName, 0);
 323                 StrBufAppendBufPlain(sc->Users[roommailalias], HKEY("@"), 0);
 324                 StrBufAppendBufPlain(sc->Users[roommailalias], config.c_fqdn, -1, 0);
 325
 326                 StrBufLowerCase(sc->Users[roommailalias]);
 327         }
 328
 329         FreeStrBuf(&RoomName);
 330 }
 331
 332
 333 /*
 334  * Batch up and send all outbound traffic from the current room
 335  */
 336 void network_spoolout_room(SpoolControl *sc)
 337 {
 338         struct CitContext *CCC = CC;
 339         char buf[SIZ];
 340         int i;
 341         long lastsent;
 342
 343         /*
 344          * If the room doesn't exist, don't try to perform its networking tasks.
 345          * Normally this should never happen, but once in a while maybe a room gets
 346          * queued for networking and then deleted before it can happen.
 347          */
 348         memcpy (&CCC->room, &sc->room, sizeof(ctdlroom));
 349
 350         syslog(LOG_INFO, "Networking started for <%s>\n", CCC->room.QRname);
 351
 352         /* If there are digest recipients, we have to build a digest */
 353         if (sc->Users[digestrecp] != NULL) {
 354                 sc->digestfp = tmpfile();
 355                 fprintf(sc->digestfp, "Content-type: text/plain\n\n");
 356         }
 357
 358         CalcListID(sc);
 359
 360         /* remember where we started... */
 361         lastsent = sc->lastsent;
 362
 363         /* Do something useful */
 364         CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
 365                 network_spool_msg, sc);
 366
 367         /* If we wrote a digest, deliver it and then close it */
 368         if (StrLength(sc->Users[roommailalias]) > 0)
 369         {
 370                 long len;
 371                 len = StrLength(sc->Users[roommailalias]);
 372                 if (len + 1 > sizeof(buf))
 373                         len = sizeof(buf) - 1;
 374                 memcpy(buf, ChrPtr(sc->Users[roommailalias]), len);
 375                 buf[len] = '\0';
 376         }
 377         else
 378         {
 379                 snprintf(buf, sizeof buf, "room_%s@%s",
 380                          CCC->room.QRname, config.c_fqdn);
 381         }
 382
 383         for (i=0; buf[i]; ++i) {
 384                 buf[i] = tolower(buf[i]);
 385                 if (isspace(buf[i])) buf[i] = '_';
 386         }
 387         if (sc->digestfp != NULL) {
 388                 fprintf(sc->digestfp,
 389                         " -----------------------------------"
 390                         "------------------------------------"
 391                         "-------\n"
 392                         "You are subscribed to the '%s' "
 393                         "list.\n"
 394                         "To post to the list: %s\n",
 395                         CCC->room.QRname, buf
 396                 );
 397                 network_deliver_digest(sc);     /* deliver and close */
 398         }
 399
 400         /* Now rewrite the config file */
 401         if (sc->lastsent != lastsent)
 402         {
 403                 sc->RNCfg = CtdlGetNetCfgForRoom(sc->room.QRnumber);
 404
 405                 sc->RNCfg->lastsent = sc->lastsent;
 406                 sc->RNCfg->changed = 1;
 407         }
 408         end_critical_section(S_NETCONFIGS);
 409 }
 410
 411 /*
 412  * Process a buffer containing a single message from a single file
 413  * from the inbound queue
 414  */
 415 void network_process_buffer(char *buffer, long size, HashList *working_ignetcfg, HashList *the_netmap, int *netmap_changed)
 416 {
 417         long len;
 418         struct CitContext *CCC = CC;
 419         StrBuf *Buf = NULL;
 420         struct CtdlMessage *msg = NULL;
 421         long pos;
 422         int field;
 423         recptypes *recp = NULL;
 424         char target_room[ROOMNAMELEN];
 425         struct ser_ret sermsg;
 426         char filename[PATH_MAX];
 427         FILE *fp;
 428         const StrBuf *nexthop = NULL;
 429         unsigned char firstbyte;
 430         unsigned char lastbyte;
 431
 432         QN_syslog(LOG_DEBUG, "network_process_buffer() processing %ld bytes\n", size);
 433
 434         /* Validate just a little bit.  First byte should be FF and * last byte should be 00. */
 435         firstbyte = buffer[0];
 436         lastbyte = buffer[size-1];
 437         if ( (firstbyte != 255) || (lastbyte != 0) ) {
 438                 QN_syslog(LOG_ERR, "Corrupt message ignored.  Length=%ld, firstbyte = %d, lastbyte = %d\n",
 439                           size, firstbyte, lastbyte);
 440                 return;
 441         }
 442
 443         /* Set default target room to trash */
 444         strcpy(target_room, TWITROOM);
 445
 446         /* Load the message into memory */
 447         msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
 448         memset(msg, 0, sizeof(struct CtdlMessage));
 449         msg->cm_magic = CTDLMESSAGE_MAGIC;
 450         msg->cm_anon_type = buffer[1];
 451         msg->cm_format_type = buffer[2];
 452
 453         for (pos = 3; pos < size; ++pos) {
 454                 field = buffer[pos];
 455                 len = strlen(buffer + pos + 1);
 456                 CM_SetField(msg, field, buffer + pos + 1, len);
 457                 pos = pos + len + 1;
 458         }
 459
 460         /* Check for message routing */
 461         if (!CM_IsEmpty(msg, eDestination)) {
 462                 if (strcasecmp(msg->cm_fields[eDestination], config.c_nodename)) {
 463
 464                         /* route the message */
 465                         Buf = NewStrBufPlain(CM_KEY(msg,eDestination));
 466                         if (CtdlIsValidNode(&nexthop,
 467                                             NULL,
 468                                             Buf,
 469                                             working_ignetcfg,
 470                                             the_netmap) == 0)
 471                         {
 472                                 Netmap_AddMe(msg, HKEY("unknown_user"));
 473
 474                                 /* serialize the message */
 475                                 CtdlSerializeMessage(&sermsg, msg);
 476
 477                                 /* now send it */
 478                                 if (StrLength(nexthop) == 0) {
 479                                         nexthop = Buf;
 480                                 }
 481                                 snprintf(filename,
 482                                          sizeof filename,
 483                                          "%s/%s@%lx%x",
 484                                          ctdl_netout_dir,
 485                                          ChrPtr(nexthop),
 486                                          time(NULL),
 487                                          rand()
 488                                 );
 489                                 QN_syslog(LOG_DEBUG, "Appending to %s\n", filename);
 490                                 fp = fopen(filename, "ab");
 491                                 if (fp != NULL) {
 492                                         fwrite(sermsg.ser, sermsg.len, 1, fp);
 493                                         fclose(fp);
 494                                 }
 495                                 else {
 496                                         QN_syslog(LOG_ERR, "%s: %s\n", filename, strerror(errno));
 497                                 }
 498                                 free(sermsg.ser);
 499                                 CM_Free(msg);
 500                                 FreeStrBuf(&Buf);
 501                                 return;
 502                         }
 503
 504                         else {  /* invalid destination node name */
 505                                 FreeStrBuf(&Buf);
 506
 507                                 network_bounce(msg,
 508 "A message you sent could not be delivered due to an invalid destination node"
 509 " name.  Please check the address and try sending the message again.\n");
 510                                 msg = NULL;
 511                                 return;
 512
 513                         }
 514                 }
 515         }
 516
 517         /*
 518          * Check to see if we already have a copy of this message, and
 519          * abort its processing if so.  (We used to post a warning to Aide>
 520          * every time this happened, but the network is now so densely
 521          * connected that it's inevitable.)
 522          */
 523         if (network_usetable(msg) != 0) {
 524                 CM_Free(msg);
 525                 return;
 526         }
 527
 528         /* Learn network topology from the path */
 529         if (!CM_IsEmpty(msg, eNodeName) && !CM_IsEmpty(msg, eMessagePath)) {
 530                 NetworkLearnTopology(msg->cm_fields[eNodeName],
 531                                      msg->cm_fields[eMessagePath],
 532                                      the_netmap,
 533                                      netmap_changed);
 534         }
 535
 536         /* Is the sending node giving us a very persuasive suggestion about
 537          * which room this message should be saved in?  If so, go with that.
 538          */
 539         if (!CM_IsEmpty(msg, eRemoteRoom)) {
 540                 safestrncpy(target_room, msg->cm_fields[eRemoteRoom], sizeof target_room);
 541         }
 542
 543         /* Otherwise, does it have a recipient?  If so, validate it... */
 544         else if (!CM_IsEmpty(msg, eRecipient)) {
 545                 recp = validate_recipients(msg->cm_fields[eRecipient], NULL, 0);
 546                 if (recp != NULL) if (recp->num_error != 0) {
 547                         network_bounce(msg,
 548                                 "A message you sent could not be delivered due to an invalid address.\n"
 549                                 "Please check the address and try sending the message again.\n");
 550                         msg = NULL;
 551                         free_recipients(recp);
 552                         QNM_syslog(LOG_DEBUG, "Bouncing message due to invalid recipient address.\n");
 553                         return;
 554                 }
 555                 strcpy(target_room, "");        /* no target room if mail */
 556         }
 557
 558         /* Our last shot at finding a home for this message is to see if
 559          * it has the eOriginalRoom (O) field (Originating room) set.
 560          */
 561         else if (!CM_IsEmpty(msg, eOriginalRoom)) {
 562                 safestrncpy(target_room, msg->cm_fields[eOriginalRoom], sizeof target_room);
 563         }
 564
 565         /* Strip out fields that are only relevant during transit */
 566         CM_FlushField(msg, eDestination);
 567         CM_FlushField(msg, eRemoteRoom);
 568
 569         /* save the message into a room */
 570         if (PerformNetprocHooks(msg, target_room) == 0) {
 571                 msg->cm_flags = CM_SKIP_HOOKS;
 572                 CtdlSubmitMsg(msg, recp, target_room, 0);
 573         }
 574         CM_Free(msg);
 575         free_recipients(recp);
 576 }
 577
 578
 579 /*
 580  * Process a single message from a single file from the inbound queue
 581  */
 582 void network_process_message(FILE *fp,
 583                              long msgstart,
 584                              long msgend,
 585                              HashList *working_ignetcfg,
 586                              HashList *the_netmap,
 587                              int *netmap_changed)
 588 {
 589         long hold_pos;
 590         long size;
 591         char *buffer;
 592
 593         hold_pos = ftell(fp);
 594         size = msgend - msgstart + 1;
 595         buffer = malloc(size);
 596         if (buffer != NULL) {
 597                 fseek(fp, msgstart, SEEK_SET);
 598                 if (fread(buffer, size, 1, fp) > 0) {
 599                         network_process_buffer(buffer,
 600                                                size,
 601                                                working_ignetcfg,
 602                                                the_netmap,
 603                                                netmap_changed);
 604                 }
 605                 free(buffer);
 606         }
 607
 608         fseek(fp, hold_pos, SEEK_SET);
 609 }
 610
 611
 612 /*
 613  * Process a single file from the inbound queue
 614  */
 615 void network_process_file(char *filename,
 616                           HashList *working_ignetcfg,
 617                           HashList *the_netmap,
 618                           int *netmap_changed)
 619 {
 620         struct CitContext *CCC = CC;
 621         FILE *fp;
 622         long msgstart = (-1L);
 623         long msgend = (-1L);
 624         long msgcur = 0L;
 625         int ch;
 626         int nMessages = 0;
 627
 628         fp = fopen(filename, "rb");
 629         if (fp == NULL) {
 630                 QN_syslog(LOG_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
 631                 return;
 632         }
 633
 634         fseek(fp, 0L, SEEK_END);
 635         QN_syslog(LOG_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
 636         rewind(fp);
 637
 638         /* Look for messages in the data stream and break them out */
 639         while (ch = getc(fp), ch >= 0) {
 640
 641                 if (ch == 255) {
 642                         if (msgstart >= 0L) {
 643                                 msgend = msgcur - 1;
 644                                 network_process_message(fp,
 645                                                         msgstart,
 646                                                         msgend,
 647                                                         working_ignetcfg,
 648                                                         the_netmap,
 649                                                         netmap_changed);
 650                         }
 651                         msgstart = msgcur;
 652                 }
 653
 654                 ++msgcur;
 655                 nMessages ++;
 656         }
 657
 658         msgend = msgcur - 1;
 659         if (msgstart >= 0L) {
 660                 network_process_message(fp,
 661                                         msgstart,
 662                                         msgend,
 663                                         working_ignetcfg,
 664                                         the_netmap,
 665                                         netmap_changed);
 666                 nMessages ++;
 667         }
 668
 669         if (nMessages > 0)
 670                 QN_syslog(LOG_INFO,
 671                           "network: processed %d messages in %s\n",
 672                           nMessages,
 673                           filename);
 674
 675         fclose(fp);
 676         unlink(filename);
 677 }
 678
 679
 680 /*
 681  * Process anything in the inbound queue
 682  */
 683 void network_do_spoolin(HashList *working_ignetcfg, HashList *the_netmap, int *netmap_changed)
 684 {
 685         struct CitContext *CCC = CC;
 686         DIR *dp;
 687         struct dirent *d;
 688         struct dirent *filedir_entry;
 689         struct stat statbuf;
 690         char filename[PATH_MAX];
 691         static time_t last_spoolin_mtime = 0L;
 692         int d_type = 0;
 693         int d_namelen;
 694
 695         /*
 696          * Check the spoolin directory's modification time.  If it hasn't
 697          * been touched, we don't need to scan it.
 698          */
 699         if (stat(ctdl_netin_dir, &statbuf)) return;
 700         if (statbuf.st_mtime == last_spoolin_mtime) {
 701                 QNM_syslog(LOG_DEBUG, "network: nothing in inbound queue\n");
 702                 return;
 703         }
 704         last_spoolin_mtime = statbuf.st_mtime;
 705         QNM_syslog(LOG_DEBUG, "network: processing inbound queue\n");
 706
 707         /*
 708          * Ok, there's something interesting in there, so scan it.
 709          */
 710         dp = opendir(ctdl_netin_dir);
 711         if (dp == NULL) return;
 712
 713         d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 1);
 714         if (d == NULL) {
 715                 closedir(dp);
 716                 return;
 717         }
 718
 719         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 720                (filedir_entry != NULL))
 721         {
 722 #ifdef _DIRENT_HAVE_D_NAMLEN
 723                 d_namelen = filedir_entry->d_namlen;
 724
 725 #else
 726                 d_namelen = strlen(filedir_entry->d_name);
 727 #endif
 728
 729 #ifdef _DIRENT_HAVE_D_TYPE
 730                 d_type = filedir_entry->d_type;
 731 #else
 732                 d_type = DT_UNKNOWN;
 733 #endif
 734                 if ((d_namelen > 1) && filedir_entry->d_name[d_namelen - 1] == '~')
 735                         continue; /* Ignore backup files... */
 736
 737                 if ((d_namelen == 1) &&
 738                     (filedir_entry->d_name[0] == '.'))
 739                         continue;
 740
 741                 if ((d_namelen == 2) &&
 742                     (filedir_entry->d_name[0] == '.') &&
 743                     (filedir_entry->d_name[1] == '.'))
 744                         continue;
 745
 746                 if (d_type == DT_UNKNOWN) {
 747                         struct stat s;
 748                         char path[PATH_MAX];
 749
 750                         snprintf(path,
 751                                  PATH_MAX,
 752                                  "%s/%s",
 753                                  ctdl_netin_dir,
 754                                  filedir_entry->d_name);
 755
 756                         if (lstat(path, &s) == 0) {
 757                                 d_type = IFTODT(s.st_mode);
 758                         }
 759                 }
 760
 761                 switch (d_type)
 762                 {
 763                 case DT_DIR:
 764                         break;
 765                 case DT_LNK: /* TODO: check whether its a file or a directory */
 766                 case DT_REG:
 767                         snprintf(filename,
 768                                 sizeof filename,
 769                                 "%s/%s",
 770                                 ctdl_netin_dir,
 771                                 d->d_name
 772                         );
 773                         network_process_file(filename,
 774                                              working_ignetcfg,
 775                                              the_netmap,
 776                                              netmap_changed);
 777                 }
 778         }
 779
 780         closedir(dp);
 781         free(d);
 782 }
 783
 784 /*
 785  * Step 1: consolidate files in the outbound queue into one file per neighbor node
 786  * Step 2: delete any files in the outbound queue that were for neighbors who no longer exist.
 787  */
 788 void network_consolidate_spoolout(HashList *working_ignetcfg, HashList *the_netmap)
 789 {
 790         struct CitContext *CCC = CC;
 791         IOBuffer IOB;
 792         FDIOBuffer FDIO;
 793         int d_namelen;
 794         DIR *dp;
 795         struct dirent *d;
 796         struct dirent *filedir_entry;
 797         const char *pch;
 798         char spooloutfilename[PATH_MAX];
 799         char filename[PATH_MAX];
 800         const StrBuf *nexthop;
 801         StrBuf *NextHop;
 802         int i;
 803         struct stat statbuf;
 804         int nFailed = 0;
 805         int d_type = 0;
 806
 807
 808         /* Step 1: consolidate files in the outbound queue into one file per neighbor node */
 809         d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 1);
 810         if (d == NULL)  return;
 811
 812         dp = opendir(ctdl_netout_dir);
 813         if (dp == NULL) {
 814                 free(d);
 815                 return;
 816         }
 817
 818         NextHop = NewStrBuf();
 819         memset(&IOB, 0, sizeof(IOBuffer));
 820         memset(&FDIO, 0, sizeof(FDIOBuffer));
 821         FDIO.IOB = &IOB;
 822
 823         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 824                (filedir_entry != NULL))
 825         {
 826 #ifdef _DIRENT_HAVE_D_NAMLEN
 827                 d_namelen = filedir_entry->d_namlen;
 828
 829 #else
 830                 d_namelen = strlen(filedir_entry->d_name);
 831 #endif
 832
 833 #ifdef _DIRENT_HAVE_D_TYPE
 834                 d_type = filedir_entry->d_type;
 835 #else
 836                 d_type = DT_UNKNOWN;
 837 #endif
 838                 if (d_type == DT_DIR)
 839                         continue;
 840
 841                 if ((d_namelen > 1) && filedir_entry->d_name[d_namelen - 1] == '~')
 842                         continue; /* Ignore backup files... */
 843
 844                 if ((d_namelen == 1) &&
 845                     (filedir_entry->d_name[0] == '.'))
 846                         continue;
 847
 848                 if ((d_namelen == 2) &&
 849                     (filedir_entry->d_name[0] == '.') &&
 850                     (filedir_entry->d_name[1] == '.'))
 851                         continue;
 852
 853                 pch = strchr(filedir_entry->d_name, '@');
 854                 if (pch == NULL)
 855                         continue;
 856
 857                 snprintf(filename,
 858                          sizeof filename,
 859                          "%s/%s",
 860                          ctdl_netout_dir,
 861                          filedir_entry->d_name);
 862
 863                 StrBufPlain(NextHop,
 864                             filedir_entry->d_name,
 865                             pch - filedir_entry->d_name);
 866
 867                 snprintf(spooloutfilename,
 868                          sizeof spooloutfilename,
 869                          "%s/%s",
 870                          ctdl_netout_dir,
 871                          ChrPtr(NextHop));
 872
 873                 QN_syslog(LOG_DEBUG, "Consolidate %s to %s\n", filename, ChrPtr(NextHop));
 874                 if (CtdlNetworkTalkingTo(SKEY(NextHop), NTT_CHECK)) {
 875                         nFailed++;
 876                         QN_syslog(LOG_DEBUG,
 877                                   "Currently online with %s - skipping for now\n",
 878                                   ChrPtr(NextHop)
 879                                 );
 880                 }
 881                 else {
 882                         size_t dsize;
 883                         size_t fsize;
 884                         int infd, outfd;
 885                         const char *err = NULL;
 886                         CtdlNetworkTalkingTo(SKEY(NextHop), NTT_ADD);
 887
 888                         infd = open(filename, O_RDONLY);
 889                         if (infd == -1) {
 890                                 nFailed++;
 891                                 QN_syslog(LOG_ERR,
 892                                           "failed to open %s for reading due to %s; skipping.\n",
 893                                           filename, strerror(errno)
 894                                         );
 895                                 CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 896                                 continue;
 897                         }
 898
 899                         outfd = open(spooloutfilename,
 900                                   O_EXCL|O_CREAT|O_NONBLOCK|O_WRONLY,
 901                                   S_IRUSR|S_IWUSR);
 902                         if (outfd == -1)
 903                         {
 904                                 outfd = open(spooloutfilename,
 905                                              O_EXCL|O_NONBLOCK|O_WRONLY,
 906                                              S_IRUSR | S_IWUSR);
 907                         }
 908                         if (outfd == -1) {
 909                                 nFailed++;
 910                                 QN_syslog(LOG_ERR,
 911                                           "failed to open %s for reading due to %s; skipping.\n",
 912                                           spooloutfilename, strerror(errno)
 913                                         );
 914                                 close(infd);
 915                                 CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 916                                 continue;
 917                         }
 918
 919                         dsize = lseek(outfd, 0, SEEK_END);
 920                         lseek(outfd, -dsize, SEEK_SET);
 921
 922                         fstat(infd, &statbuf);
 923                         fsize = statbuf.st_size;
 924 /*
 925                         fsize = lseek(infd, 0, SEEK_END);
 926 */
 927                         IOB.fd = infd;
 928                         FDIOBufferInit(&FDIO, &IOB, outfd, fsize + dsize);
 929                         FDIO.ChunkSendRemain = fsize;
 930                         FDIO.TotalSentAlready = dsize;
 931                         err = NULL;
 932                         errno = 0;
 933                         do {} while ((FileMoveChunked(&FDIO, &err) > 0) && (err == NULL));
 934                         if (err == NULL) {
 935                                 unlink(filename);
 936                                 QN_syslog(LOG_DEBUG,
 937                                           "Spoolfile %s now "SIZE_T_FMT" k\n",
 938                                           spooloutfilename,
 939                                           (dsize + fsize)/1024
 940                                         );
 941                         }
 942                         else {
 943                                 nFailed++;
 944                                 QN_syslog(LOG_ERR,
 945                                           "failed to append to %s [%s]; rolling back..\n",
 946                                           spooloutfilename, strerror(errno)
 947                                         );
 948                                 /* whoops partial append?? truncate spooloutfilename again! */
 949                                 ftruncate(outfd, dsize);
 950                         }
 951                         FDIOBufferDelete(&FDIO);
 952                         close(infd);
 953                         close(outfd);
 954                         CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 955                 }
 956         }
 957         closedir(dp);
 958
 959         if (nFailed > 0) {
 960                 FreeStrBuf(&NextHop);
 961                 QN_syslog(LOG_INFO,
 962                           "skipping Spoolcleanup because of %d files unprocessed.\n",
 963                           nFailed
 964                         );
 965
 966                 return;
 967         }
 968
 969         /* Step 2: delete any files in the outbound queue that were for neighbors who no longer exist */
 970         dp = opendir(ctdl_netout_dir);
 971         if (dp == NULL) {
 972                 FreeStrBuf(&NextHop);
 973                 free(d);
 974                 return;
 975         }
 976
 977         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 978                (filedir_entry != NULL))
 979         {
 980 #ifdef _DIRENT_HAVE_D_NAMLEN
 981                 d_namelen = filedir_entry->d_namelen;
 982
 983 #else
 984                 d_namelen = strlen(filedir_entry->d_name);
 985 #endif
 986
 987 #ifdef _DIRENT_HAVE_D_TYPE
 988                 d_type = filedir_entry->d_type;
 989 #else
 990                 d_type = DT_UNKNOWN;
 991 #endif
 992                 if (d_type == DT_DIR)
 993                         continue;
 994
 995                 if ((d_namelen == 1) &&
 996                     (filedir_entry->d_name[0] == '.'))
 997                         continue;
 998
 999                 if ((d_namelen == 2) &&
1000                     (filedir_entry->d_name[0] == '.') &&
1001                     (filedir_entry->d_name[1] == '.'))
1002                         continue;
1003
1004                 pch = strchr(filedir_entry->d_name, '@');
1005                 if (pch == NULL) /* no @ in name? consolidated file. */
1006                         continue;
1007
1008                 StrBufPlain(NextHop,
1009                             filedir_entry->d_name,
1010                             pch - filedir_entry->d_name);
1011
1012                 snprintf(filename,
1013                         sizeof filename,
1014                         "%s/%s",
1015                         ctdl_netout_dir,
1016                         filedir_entry->d_name
1017                 );
1018
1019                 i = CtdlIsValidNode(&nexthop,
1020                                     NULL,
1021                                     NextHop,
1022                                     working_ignetcfg,
1023                                     the_netmap);
1024
1025                 if ( (i != 0) || (StrLength(nexthop) > 0) ) {
1026                         unlink(filename);
1027                 }
1028         }
1029         FreeStrBuf(&NextHop);
1030         free(d);
1031         closedir(dp);
1032 }
1033
1034 void free_spoolcontrol_struct(SpoolControl **sc)
1035 {
1036         free_spoolcontrol_struct_members(*sc);
1037         free(*sc);
1038         *sc = NULL;
1039 }
1040
1041 void free_spoolcontrol_struct_members(SpoolControl *sc)
1042 {
1043         int i;
1044         FreeStrBuf(&sc->RoomInfo);
1045         FreeStrBuf(&sc->ListID);
1046         for (i = 0; i < maxRoomNetCfg; i++)
1047                 FreeStrBuf(&sc->Users[i]);
1048 }
1049
1050
1051
1052 /*
1053  * It's ok if these directories already exist.  Just fail silently.
1054  */
1055 void create_spool_dirs(void) {
1056         if ((mkdir(ctdl_spool_dir, 0700) != 0) && (errno != EEXIST))
1057                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_spool_dir, strerror(errno));
1058         if (chown(ctdl_spool_dir, CTDLUID, (-1)) != 0)
1059                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_spool_dir, strerror(errno));
1060         if ((mkdir(ctdl_netin_dir, 0700) != 0) && (errno != EEXIST))
1061                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_netin_dir, strerror(errno));
1062         if (chown(ctdl_netin_dir, CTDLUID, (-1)) != 0)
1063                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netin_dir, strerror(errno));
1064         if ((mkdir(ctdl_nettmp_dir, 0700) != 0) && (errno != EEXIST))
1065                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_nettmp_dir, strerror(errno));
1066         if (chown(ctdl_nettmp_dir, CTDLUID, (-1)) != 0)
1067                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_nettmp_dir, strerror(errno));
1068         if ((mkdir(ctdl_netout_dir, 0700) != 0) && (errno != EEXIST))
1069                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_netout_dir, strerror(errno));
1070         if (chown(ctdl_netout_dir, CTDLUID, (-1)) != 0)
1071                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netout_dir, strerror(errno));
1072 }
1073
1074 /*
1075  * Module entry point
1076  */
1077 CTDL_MODULE_INIT(network_spool)
1078 {
1079         if (!threading)
1080         {
1081                 CtdlREGISTERRoomCfgType(subpending,       ParseSubPendingLine,   0, 5, SerializeGeneric,  DeleteGenericCfgLine); /// todo: move this to mailinglist manager
1082                 CtdlREGISTERRoomCfgType(unsubpending,     ParseUnSubPendingLine, 0, 4, SerializeGeneric,  DeleteGenericCfgLine); /// todo: move this to mailinglist manager
1083                 CtdlREGISTERRoomCfgType(lastsent,         ParseLastSent,         1, 1, SerializeLastSent, DeleteLastSent);
1084                 CtdlREGISTERRoomCfgType(ignet_push_share, ParseGeneric,          0, 2, SerializeGeneric,  DeleteGenericCfgLine); // [remotenode|remoteroomname (optional)]// todo: move this to the ignet client
1085                 CtdlREGISTERRoomCfgType(listrecp,         ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
1086                 CtdlREGISTERRoomCfgType(digestrecp,       ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
1087                 CtdlREGISTERRoomCfgType(participate,      ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
1088                 CtdlREGISTERRoomCfgType(roommailalias,    ParseRoomAlias,        0, 1, SerializeGeneric,  DeleteGenericCfgLine);
1089
1090                 create_spool_dirs();
1091 //////todo              CtdlRegisterCleanupHook(destroy_network_queue_room);
1092         }
1093         return "network_spool";
1094 }