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