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         StrBuf *RoomName;
 228         const char *err;
 229         int fd;
 230         struct CitContext *CCC = CC;
 231         char filename[PATH_MAX];
 232 #define MAX_LISTIDLENGTH 150
 233
 234         assoc_file_name(filename, sizeof filename, &sc->room, ctdl_info_dir);
 235         fd = open(filename, 0);
 236
 237         if (fd > 0) {
 238                 struct stat stbuf;
 239
 240                 if ((fstat(fd, &stbuf) == 0) &&
 241                     (stbuf.st_size > 0))
 242                 {
 243                         sc->RoomInfo = NewStrBufPlain(NULL, stbuf.st_size + 1);
 244                         StrBufReadBLOB(sc->RoomInfo, &fd, 0, stbuf.st_size, &err);
 245                 }
 246                 close(fd);
 247         }
 248
 249         sc->ListID = NewStrBufPlain(NULL, 1024);
 250         if (StrLength(sc->RoomInfo) > 0)
 251         {
 252                 const char *Pos = NULL;
 253                 StrBufSipLine(sc->ListID, sc->RoomInfo, &Pos);
 254
 255                 if (StrLength(sc->ListID) > MAX_LISTIDLENGTH)
 256                 {
 257                         StrBufCutAt(sc->ListID, MAX_LISTIDLENGTH, NULL);
 258                         StrBufAppendBufPlain(sc->ListID, HKEY("..."), 0);
 259                 }
 260                 StrBufAsciify(sc->ListID, ' ');
 261         }
 262         else
 263         {
 264                 StrBufAppendBufPlain(sc->ListID, CCC->room.QRname, -1, 0);
 265         }
 266
 267         StrBufAppendBufPlain(sc->ListID, HKEY("<"), 0);
 268         RoomName = NewStrBufPlain (sc->room.QRname, -1);
 269         StrBufAsciify(RoomName, '_');
 270         StrBufReplaceChars(RoomName, ' ', '_');
 271
 272         if (StrLength(sc->Users[roommailalias]) > 0)
 273         {
 274                 long Pos;
 275                 const char *AtPos;
 276
 277                 Pos = StrLength(sc->ListID);
 278                 StrBufAppendBuf(sc->ListID, sc->Users[roommailalias], 0);
 279                 AtPos = strchr(ChrPtr(sc->ListID) + Pos, '@');
 280
 281                 if (AtPos != NULL)
 282                 {
 283                         StrBufPeek(sc->ListID, AtPos, 0, '.');
 284                 }
 285         }
 286         else
 287         {
 288                 StrBufAppendBufPlain(sc->ListID, HKEY("room_"), 0);
 289                 StrBufAppendBuf(sc->ListID, RoomName, 0);
 290                 StrBufAppendBufPlain(sc->ListID, HKEY("."), 0);
 291                 StrBufAppendBufPlain(sc->ListID, config.c_fqdn, -1, 0);
 292                 /*
 293                  * this used to be:
 294                  * roomname <Room-Number.list-id.fqdn>
 295                  * according to rfc2919.txt it only has to be a uniq identifier
 296                  * under the domain of the system;
 297                  * in general MUAs use it to calculate the reply address nowadays.
 298                  */
 299         }
 300         StrBufAppendBufPlain(sc->ListID, HKEY(">"), 0);
 301
 302         if (StrLength(sc->Users[roommailalias]) == 0)
 303         {
 304                 sc->Users[roommailalias] = NewStrBuf();
 305
 306                 StrBufAppendBufPlain(sc->Users[roommailalias], HKEY("room_"), 0);
 307                 StrBufAppendBuf(sc->Users[roommailalias], RoomName, 0);
 308                 StrBufAppendBufPlain(sc->Users[roommailalias], HKEY("@"), 0);
 309                 StrBufAppendBufPlain(sc->Users[roommailalias], config.c_fqdn, -1, 0);
 310
 311                 StrBufLowerCase(sc->Users[roommailalias]);
 312         }
 313
 314         FreeStrBuf(&RoomName);
 315 }
 316
 317
 318 /*
 319  * Batch up and send all outbound traffic from the current room
 320  */
 321 void network_spoolout_room(SpoolControl *sc)
 322 {
 323         struct CitContext *CCC = CC;
 324         char buf[SIZ];
 325         int i;
 326         long lastsent;
 327
 328         /*
 329          * If the room doesn't exist, don't try to perform its networking tasks.
 330          * Normally this should never happen, but once in a while maybe a room gets
 331          * queued for networking and then deleted before it can happen.
 332          */
 333         memcpy (&CCC->room, &sc->room, sizeof(ctdlroom));
 334
 335         syslog(LOG_INFO, "Networking started for <%s>\n", CCC->room.QRname);
 336
 337         /* If there are digest recipients, we have to build a digest */
 338         if (sc->Users[digestrecp] != NULL) {
 339                 sc->digestfp = tmpfile();
 340                 fprintf(sc->digestfp, "Content-type: text/plain\n\n");
 341         }
 342
 343         CalcListID(sc);
 344
 345         /* remember where we started... */
 346         lastsent = sc->lastsent;
 347
 348         /* Do something useful */
 349         CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
 350                 network_spool_msg, sc);
 351
 352         /* If we wrote a digest, deliver it and then close it */
 353         if (StrLength(sc->Users[roommailalias]) > 0)
 354         {
 355                 long len;
 356                 len = StrLength(sc->Users[roommailalias]);
 357                 if (len + 1 > sizeof(buf))
 358                         len = sizeof(buf) - 1;
 359                 memcpy(buf, ChrPtr(sc->Users[roommailalias]), len);
 360                 buf[len] = '\0';
 361         }
 362         else
 363         {
 364                 snprintf(buf, sizeof buf, "room_%s@%s",
 365                          CCC->room.QRname, config.c_fqdn);
 366         }
 367
 368         for (i=0; buf[i]; ++i) {
 369                 buf[i] = tolower(buf[i]);
 370                 if (isspace(buf[i])) buf[i] = '_';
 371         }
 372         if (sc->digestfp != NULL) {
 373                 fprintf(sc->digestfp,
 374                         " -----------------------------------"
 375                         "------------------------------------"
 376                         "-------\n"
 377                         "You are subscribed to the '%s' "
 378                         "list.\n"
 379                         "To post to the list: %s\n",
 380                         CCC->room.QRname, buf
 381                 );
 382                 network_deliver_digest(sc);     /* deliver and close */
 383         }
 384
 385         /* Now rewrite the config file */
 386         if (sc->lastsent != lastsent)
 387         {
 388                 sc->RNCfg = CtdlGetNetCfgForRoom(sc->room.QRnumber);
 389
 390                 sc->RNCfg->lastsent = sc->lastsent;
 391                 sc->RNCfg->changed = 1;
 392         }
 393         end_critical_section(S_NETCONFIGS);
 394 }
 395
 396 /*
 397  * Process a buffer containing a single message from a single file
 398  * from the inbound queue
 399  */
 400 void network_process_buffer(char *buffer, long size, HashList *working_ignetcfg, HashList *the_netmap, int *netmap_changed)
 401 {
 402         long len;
 403         struct CitContext *CCC = CC;
 404         StrBuf *Buf = NULL;
 405         struct CtdlMessage *msg = NULL;
 406         long pos;
 407         int field;
 408         struct recptypes *recp = NULL;
 409         char target_room[ROOMNAMELEN];
 410         struct ser_ret sermsg;
 411         char *oldpath = NULL;
 412         char filename[PATH_MAX];
 413         FILE *fp;
 414         const StrBuf *nexthop = NULL;
 415         unsigned char firstbyte;
 416         unsigned char lastbyte;
 417
 418         QN_syslog(LOG_DEBUG, "network_process_buffer() processing %ld bytes\n", size);
 419
 420         /* Validate just a little bit.  First byte should be FF and * last byte should be 00. */
 421         firstbyte = buffer[0];
 422         lastbyte = buffer[size-1];
 423         if ( (firstbyte != 255) || (lastbyte != 0) ) {
 424                 QN_syslog(LOG_ERR, "Corrupt message ignored.  Length=%ld, firstbyte = %d, lastbyte = %d\n",
 425                           size, firstbyte, lastbyte);
 426                 return;
 427         }
 428
 429         /* Set default target room to trash */
 430         strcpy(target_room, TWITROOM);
 431
 432         /* Load the message into memory */
 433         msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
 434         memset(msg, 0, sizeof(struct CtdlMessage));
 435         msg->cm_magic = CTDLMESSAGE_MAGIC;
 436         msg->cm_anon_type = buffer[1];
 437         msg->cm_format_type = buffer[2];
 438
 439         for (pos = 3; pos < size; ++pos) {
 440                 field = buffer[pos];
 441                 len = strlen(buffer + pos + 1);
 442                 msg->cm_fields[field] = malloc(len + 1);
 443                 memcpy (msg->cm_fields[field], buffer+ pos + 1, len + 1);
 444                 pos = pos + len + 1;
 445         }
 446
 447         /* Check for message routing */
 448         if (msg->cm_fields['D'] != NULL) {
 449                 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
 450
 451                         /* route the message */
 452                         Buf = NewStrBufPlain(msg->cm_fields['D'], -1);
 453                         if (CtdlIsValidNode(&nexthop,
 454                                             NULL,
 455                                             Buf,
 456                                             working_ignetcfg,
 457                                             the_netmap) == 0)
 458                         {
 459                                 /* prepend our node to the path */
 460                                 if (msg->cm_fields['P'] != NULL) {
 461                                         oldpath = msg->cm_fields['P'];
 462                                         msg->cm_fields['P'] = NULL;
 463                                 }
 464                                 else {
 465                                         oldpath = strdup("unknown_user");
 466                                 }
 467                                 size = strlen(oldpath) + SIZ;
 468                                 msg->cm_fields['P'] = malloc(size);
 469                                 snprintf(msg->cm_fields['P'], size, "%s!%s",
 470                                         config.c_nodename, oldpath);
 471                                 free(oldpath);
 472
 473                                 /* serialize the message */
 474                                 serialize_message(&sermsg, msg);
 475
 476                                 /* now send it */
 477                                 if (StrLength(nexthop) == 0) {
 478                                         nexthop = Buf;
 479                                 }
 480                                 snprintf(filename,
 481                                          sizeof filename,
 482                                          "%s/%s@%lx%x",
 483                                          ctdl_netout_dir,
 484                                          ChrPtr(nexthop),
 485                                          time(NULL),
 486                                          rand()
 487                                 );
 488                                 QN_syslog(LOG_DEBUG, "Appending to %s\n", filename);
 489                                 fp = fopen(filename, "ab");
 490                                 if (fp != NULL) {
 491                                         fwrite(sermsg.ser, sermsg.len, 1, fp);
 492                                         fclose(fp);
 493                                 }
 494                                 else {
 495                                         QN_syslog(LOG_ERR, "%s: %s\n", filename, strerror(errno));
 496                                 }
 497                                 free(sermsg.ser);
 498                                 CtdlFreeMessage(msg);
 499                                 FreeStrBuf(&Buf);
 500                                 return;
 501                         }
 502
 503                         else {  /* invalid destination node name */
 504                                 FreeStrBuf(&Buf);
 505
 506                                 network_bounce(msg,
 507 "A message you sent could not be delivered due to an invalid destination node"
 508 " name.  Please check the address and try sending the message again.\n");
 509                                 msg = NULL;
 510                                 return;
 511
 512                         }
 513                 }
 514         }
 515
 516         /*
 517          * Check to see if we already have a copy of this message, and
 518          * abort its processing if so.  (We used to post a warning to Aide>
 519          * every time this happened, but the network is now so densely
 520          * connected that it's inevitable.)
 521          */
 522         if (network_usetable(msg) != 0) {
 523                 CtdlFreeMessage(msg);
 524                 return;
 525         }
 526
 527         /* Learn network topology from the path */
 528         if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
 529                 NetworkLearnTopology(msg->cm_fields['N'],
 530                                      msg->cm_fields['P'],
 531                                      the_netmap,
 532                                      netmap_changed);
 533         }
 534
 535         /* Is the sending node giving us a very persuasive suggestion about
 536          * which room this message should be saved in?  If so, go with that.
 537          */
 538         if (msg->cm_fields['C'] != NULL) {
 539                 safestrncpy(target_room, msg->cm_fields['C'], sizeof target_room);
 540         }
 541
 542         /* Otherwise, does it have a recipient?  If so, validate it... */
 543         else if (msg->cm_fields['R'] != NULL) {
 544                 recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
 545                 if (recp != NULL) if (recp->num_error != 0) {
 546                         network_bounce(msg,
 547                                 "A message you sent could not be delivered due to an invalid address.\n"
 548                                 "Please check the address and try sending the message again.\n");
 549                         msg = NULL;
 550                         free_recipients(recp);
 551                         QNM_syslog(LOG_DEBUG, "Bouncing message due to invalid recipient address.\n");
 552                         return;
 553                 }
 554                 strcpy(target_room, "");        /* no target room if mail */
 555         }
 556
 557         /* Our last shot at finding a home for this message is to see if
 558          * it has the O field (Originating room) set.
 559          */
 560         else if (msg->cm_fields['O'] != NULL) {
 561                 safestrncpy(target_room, msg->cm_fields['O'], sizeof target_room);
 562         }
 563
 564         /* Strip out fields that are only relevant during transit */
 565         if (msg->cm_fields['D'] != NULL) {
 566                 free(msg->cm_fields['D']);
 567                 msg->cm_fields['D'] = NULL;
 568         }
 569         if (msg->cm_fields['C'] != NULL) {
 570                 free(msg->cm_fields['C']);
 571                 msg->cm_fields['C'] = NULL;
 572         }
 573
 574         /* save the message into a room */
 575         if (PerformNetprocHooks(msg, target_room) == 0) {
 576                 msg->cm_flags = CM_SKIP_HOOKS;
 577                 CtdlSubmitMsg(msg, recp, target_room, 0);
 578         }
 579         CtdlFreeMessage(msg);
 580         free_recipients(recp);
 581 }
 582
 583
 584 /*
 585  * Process a single message from a single file from the inbound queue
 586  */
 587 void network_process_message(FILE *fp,
 588                              long msgstart,
 589                              long msgend,
 590                              HashList *working_ignetcfg,
 591                              HashList *the_netmap,
 592                              int *netmap_changed)
 593 {
 594         long hold_pos;
 595         long size;
 596         char *buffer;
 597
 598         hold_pos = ftell(fp);
 599         size = msgend - msgstart + 1;
 600         buffer = malloc(size);
 601         if (buffer != NULL) {
 602                 fseek(fp, msgstart, SEEK_SET);
 603                 if (fread(buffer, size, 1, fp) > 0) {
 604                         network_process_buffer(buffer,
 605                                                size,
 606                                                working_ignetcfg,
 607                                                the_netmap,
 608                                                netmap_changed);
 609                 }
 610                 free(buffer);
 611         }
 612
 613         fseek(fp, hold_pos, SEEK_SET);
 614 }
 615
 616
 617 /*
 618  * Process a single file from the inbound queue
 619  */
 620 void network_process_file(char *filename,
 621                           HashList *working_ignetcfg,
 622                           HashList *the_netmap,
 623                           int *netmap_changed)
 624 {
 625         struct CitContext *CCC = CC;
 626         FILE *fp;
 627         long msgstart = (-1L);
 628         long msgend = (-1L);
 629         long msgcur = 0L;
 630         int ch;
 631         int nMessages = 0;
 632
 633         fp = fopen(filename, "rb");
 634         if (fp == NULL) {
 635                 QN_syslog(LOG_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
 636                 return;
 637         }
 638
 639         fseek(fp, 0L, SEEK_END);
 640         QN_syslog(LOG_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
 641         rewind(fp);
 642
 643         /* Look for messages in the data stream and break them out */
 644         while (ch = getc(fp), ch >= 0) {
 645
 646                 if (ch == 255) {
 647                         if (msgstart >= 0L) {
 648                                 msgend = msgcur - 1;
 649                                 network_process_message(fp,
 650                                                         msgstart,
 651                                                         msgend,
 652                                                         working_ignetcfg,
 653                                                         the_netmap,
 654                                                         netmap_changed);
 655                         }
 656                         msgstart = msgcur;
 657                 }
 658
 659                 ++msgcur;
 660                 nMessages ++;
 661         }
 662
 663         msgend = msgcur - 1;
 664         if (msgstart >= 0L) {
 665                 network_process_message(fp,
 666                                         msgstart,
 667                                         msgend,
 668                                         working_ignetcfg,
 669                                         the_netmap,
 670                                         netmap_changed);
 671                 nMessages ++;
 672         }
 673
 674         if (nMessages > 0)
 675                 QN_syslog(LOG_INFO,
 676                           "network: processed %d messages in %s\n",
 677                           nMessages,
 678                           filename);
 679
 680         fclose(fp);
 681         unlink(filename);
 682 }
 683
 684
 685 /*
 686  * Process anything in the inbound queue
 687  */
 688 void network_do_spoolin(HashList *working_ignetcfg, HashList *the_netmap, int *netmap_changed)
 689 {
 690         struct CitContext *CCC = CC;
 691         DIR *dp;
 692         struct dirent *d;
 693         struct dirent *filedir_entry;
 694         struct stat statbuf;
 695         char filename[PATH_MAX];
 696         static time_t last_spoolin_mtime = 0L;
 697         int d_type = 0;
 698         int d_namelen;
 699
 700         /*
 701          * Check the spoolin directory's modification time.  If it hasn't
 702          * been touched, we don't need to scan it.
 703          */
 704         if (stat(ctdl_netin_dir, &statbuf)) return;
 705         if (statbuf.st_mtime == last_spoolin_mtime) {
 706                 QNM_syslog(LOG_DEBUG, "network: nothing in inbound queue\n");
 707                 return;
 708         }
 709         last_spoolin_mtime = statbuf.st_mtime;
 710         QNM_syslog(LOG_DEBUG, "network: processing inbound queue\n");
 711
 712         /*
 713          * Ok, there's something interesting in there, so scan it.
 714          */
 715         dp = opendir(ctdl_netin_dir);
 716         if (dp == NULL) return;
 717
 718         d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 1);
 719         if (d == NULL) {
 720                 closedir(dp);
 721                 return;
 722         }
 723
 724         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 725                (filedir_entry != NULL))
 726         {
 727 #ifdef _DIRENT_HAVE_D_NAMLEN
 728                 d_namelen = filedir_entry->d_namelen;
 729
 730 #else
 731                 d_namelen = strlen(filedir_entry->d_name);
 732 #endif
 733
 734 #ifdef _DIRENT_HAVE_D_TYPE
 735                 d_type = filedir_entry->d_type;
 736 #else
 737                 d_type = DT_UNKNOWN;
 738 #endif
 739                 if ((d_namelen > 1) && filedir_entry->d_name[d_namelen - 1] == '~')
 740                         continue; /* Ignore backup files... */
 741
 742                 if ((d_namelen == 1) &&
 743                     (filedir_entry->d_name[0] == '.'))
 744                         continue;
 745
 746                 if ((d_namelen == 2) &&
 747                     (filedir_entry->d_name[0] == '.') &&
 748                     (filedir_entry->d_name[1] == '.'))
 749                         continue;
 750
 751                 if (d_type == DT_UNKNOWN) {
 752                         struct stat s;
 753                         char path[PATH_MAX];
 754
 755                         snprintf(path,
 756                                  PATH_MAX,
 757                                  "%s/%s",
 758                                  ctdl_netin_dir,
 759                                  filedir_entry->d_name);
 760
 761                         if (lstat(path, &s) == 0) {
 762                                 d_type = IFTODT(s.st_mode);
 763                         }
 764                 }
 765
 766                 switch (d_type)
 767                 {
 768                 case DT_DIR:
 769                         break;
 770                 case DT_LNK: /* TODO: check whether its a file or a directory */
 771                 case DT_REG:
 772                         snprintf(filename,
 773                                 sizeof filename,
 774                                 "%s/%s",
 775                                 ctdl_netin_dir,
 776                                 d->d_name
 777                         );
 778                         network_process_file(filename,
 779                                              working_ignetcfg,
 780                                              the_netmap,
 781                                              netmap_changed);
 782                 }
 783         }
 784
 785         closedir(dp);
 786         free(d);
 787 }
 788
 789 /*
 790  * Step 1: consolidate files in the outbound queue into one file per neighbor node
 791  * Step 2: delete any files in the outbound queue that were for neighbors who no longer exist.
 792  */
 793 void network_consolidate_spoolout(HashList *working_ignetcfg, HashList *the_netmap)
 794 {
 795         struct CitContext *CCC = CC;
 796         IOBuffer IOB;
 797         FDIOBuffer FDIO;
 798         int d_namelen;
 799         DIR *dp;
 800         struct dirent *d;
 801         struct dirent *filedir_entry;
 802         const char *pch;
 803         char spooloutfilename[PATH_MAX];
 804         char filename[PATH_MAX];
 805         const StrBuf *nexthop;
 806         StrBuf *NextHop;
 807         int i;
 808         struct stat statbuf;
 809         int nFailed = 0;
 810         int d_type = 0;
 811
 812
 813         /* Step 1: consolidate files in the outbound queue into one file per neighbor node */
 814         d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 1);
 815         if (d == NULL)  return;
 816
 817         dp = opendir(ctdl_netout_dir);
 818         if (dp == NULL) {
 819                 free(d);
 820                 return;
 821         }
 822
 823         NextHop = NewStrBuf();
 824         memset(&IOB, 0, sizeof(IOBuffer));
 825         memset(&FDIO, 0, sizeof(FDIOBuffer));
 826         FDIO.IOB = &IOB;
 827
 828         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 829                (filedir_entry != NULL))
 830         {
 831 #ifdef _DIRENT_HAVE_D_NAMLEN
 832                 d_namelen = filedir_entry->d_namelen;
 833
 834 #else
 835                 d_namelen = strlen(filedir_entry->d_name);
 836 #endif
 837
 838 #ifdef _DIRENT_HAVE_D_TYPE
 839                 d_type = filedir_entry->d_type;
 840 #else
 841                 d_type = DT_UNKNOWN;
 842 #endif
 843                 if (d_type == DT_DIR)
 844                         continue;
 845
 846                 if ((d_namelen > 1) && filedir_entry->d_name[d_namelen - 1] == '~')
 847                         continue; /* Ignore backup files... */
 848
 849                 if ((d_namelen == 1) &&
 850                     (filedir_entry->d_name[0] == '.'))
 851                         continue;
 852
 853                 if ((d_namelen == 2) &&
 854                     (filedir_entry->d_name[0] == '.') &&
 855                     (filedir_entry->d_name[1] == '.'))
 856                         continue;
 857
 858                 pch = strchr(filedir_entry->d_name, '@');
 859                 if (pch == NULL)
 860                         continue;
 861
 862                 snprintf(filename,
 863                          sizeof filename,
 864                          "%s/%s",
 865                          ctdl_netout_dir,
 866                          filedir_entry->d_name);
 867
 868                 StrBufPlain(NextHop,
 869                             filedir_entry->d_name,
 870                             pch - filedir_entry->d_name);
 871
 872                 snprintf(spooloutfilename,
 873                          sizeof spooloutfilename,
 874                          "%s/%s",
 875                          ctdl_netout_dir,
 876                          ChrPtr(NextHop));
 877
 878                 QN_syslog(LOG_DEBUG, "Consolidate %s to %s\n", filename, ChrPtr(NextHop));
 879                 if (CtdlNetworkTalkingTo(SKEY(NextHop), NTT_CHECK)) {
 880                         nFailed++;
 881                         QN_syslog(LOG_DEBUG,
 882                                   "Currently online with %s - skipping for now\n",
 883                                   ChrPtr(NextHop)
 884                                 );
 885                 }
 886                 else {
 887                         size_t dsize;
 888                         size_t fsize;
 889                         int infd, outfd;
 890                         const char *err = NULL;
 891                         CtdlNetworkTalkingTo(SKEY(NextHop), NTT_ADD);
 892
 893                         infd = open(filename, O_RDONLY);
 894                         if (infd == -1) {
 895                                 nFailed++;
 896                                 QN_syslog(LOG_ERR,
 897                                           "failed to open %s for reading due to %s; skipping.\n",
 898                                           filename, strerror(errno)
 899                                         );
 900                                 CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 901                                 continue;
 902                         }
 903
 904                         outfd = open(spooloutfilename,
 905                                   O_EXCL|O_CREAT|O_NONBLOCK|O_WRONLY,
 906                                   S_IRUSR|S_IWUSR);
 907                         if (outfd == -1)
 908                         {
 909                                 outfd = open(spooloutfilename,
 910                                              O_EXCL|O_NONBLOCK|O_WRONLY,
 911                                              S_IRUSR | S_IWUSR);
 912                         }
 913                         if (outfd == -1) {
 914                                 nFailed++;
 915                                 QN_syslog(LOG_ERR,
 916                                           "failed to open %s for reading due to %s; skipping.\n",
 917                                           spooloutfilename, strerror(errno)
 918                                         );
 919                                 close(infd);
 920                                 CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 921                                 continue;
 922                         }
 923
 924                         dsize = lseek(outfd, 0, SEEK_END);
 925                         lseek(outfd, -dsize, SEEK_SET);
 926
 927                         fstat(infd, &statbuf);
 928                         fsize = statbuf.st_size;
 929 /*
 930                         fsize = lseek(infd, 0, SEEK_END);
 931 */
 932                         IOB.fd = infd;
 933                         FDIOBufferInit(&FDIO, &IOB, outfd, fsize + dsize);
 934                         FDIO.ChunkSendRemain = fsize;
 935                         FDIO.TotalSentAlready = dsize;
 936                         err = NULL;
 937                         errno = 0;
 938                         do {} while ((FileMoveChunked(&FDIO, &err) > 0) && (err == NULL));
 939                         if (err == NULL) {
 940                                 unlink(filename);
 941                                 QN_syslog(LOG_DEBUG,
 942                                           "Spoolfile %s now "SIZE_T_FMT" k\n",
 943                                           spooloutfilename,
 944                                           (dsize + fsize)/1024
 945                                         );
 946                         }
 947                         else {
 948                                 nFailed++;
 949                                 QN_syslog(LOG_ERR,
 950                                           "failed to append to %s [%s]; rolling back..\n",
 951                                           spooloutfilename, strerror(errno)
 952                                         );
 953                                 /* whoops partial append?? truncate spooloutfilename again! */
 954                                 ftruncate(outfd, dsize);
 955                         }
 956                         FDIOBufferDelete(&FDIO);
 957                         close(infd);
 958                         close(outfd);
 959                         CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 960                 }
 961         }
 962         closedir(dp);
 963
 964         if (nFailed > 0) {
 965                 FreeStrBuf(&NextHop);
 966                 QN_syslog(LOG_INFO,
 967                           "skipping Spoolcleanup because of %d files unprocessed.\n",
 968                           nFailed
 969                         );
 970
 971                 return;
 972         }
 973
 974         /* Step 2: delete any files in the outbound queue that were for neighbors who no longer exist */
 975         dp = opendir(ctdl_netout_dir);
 976         if (dp == NULL) {
 977                 FreeStrBuf(&NextHop);
 978                 free(d);
 979                 return;
 980         }
 981
 982         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 983                (filedir_entry != NULL))
 984         {
 985 #ifdef _DIRENT_HAVE_D_NAMLEN
 986                 d_namelen = filedir_entry->d_namelen;
 987
 988 #else
 989                 d_namelen = strlen(filedir_entry->d_name);
 990 #endif
 991
 992 #ifdef _DIRENT_HAVE_D_TYPE
 993                 d_type = filedir_entry->d_type;
 994 #else
 995                 d_type = DT_UNKNOWN;
 996 #endif
 997                 if (d_type == DT_DIR)
 998                         continue;
 999
1000                 if ((d_namelen == 1) &&
1001                     (filedir_entry->d_name[0] == '.'))
1002                         continue;
1003
1004                 if ((d_namelen == 2) &&
1005                     (filedir_entry->d_name[0] == '.') &&
1006                     (filedir_entry->d_name[1] == '.'))
1007                         continue;
1008
1009                 pch = strchr(filedir_entry->d_name, '@');
1010                 if (pch == NULL) /* no @ in name? consolidated file. */
1011                         continue;
1012
1013                 StrBufPlain(NextHop,
1014                             filedir_entry->d_name,
1015                             pch - filedir_entry->d_name);
1016
1017                 snprintf(filename,
1018                         sizeof filename,
1019                         "%s/%s",
1020                         ctdl_netout_dir,
1021                         filedir_entry->d_name
1022                 );
1023
1024                 i = CtdlIsValidNode(&nexthop,
1025                                     NULL,
1026                                     NextHop,
1027                                     working_ignetcfg,
1028                                     the_netmap);
1029
1030                 if ( (i != 0) || (StrLength(nexthop) > 0) ) {
1031                         unlink(filename);
1032                 }
1033         }
1034         FreeStrBuf(&NextHop);
1035         free(d);
1036         closedir(dp);
1037 }
1038
1039 void free_spoolcontrol_struct(SpoolControl **sc)
1040 {
1041         free_spoolcontrol_struct_members(*sc);
1042         free(*sc);
1043         *sc = NULL;
1044 }
1045
1046 void free_spoolcontrol_struct_members(SpoolControl *sc)
1047 {
1048         int i;
1049         FreeStrBuf(&sc->RoomInfo);
1050         FreeStrBuf(&sc->ListID);
1051         for (i = 0; i < maxRoomNetCfg; i++)
1052                 FreeStrBuf(&sc->Users[i]);
1053 }
1054
1055
1056
1057 /*
1058  * It's ok if these directories already exist.  Just fail silently.
1059  */
1060 void create_spool_dirs(void) {
1061         if ((mkdir(ctdl_spool_dir, 0700) != 0) && (errno != EEXIST))
1062                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_spool_dir, strerror(errno));
1063         if (chown(ctdl_spool_dir, CTDLUID, (-1)) != 0)
1064                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_spool_dir, strerror(errno));
1065         if ((mkdir(ctdl_netin_dir, 0700) != 0) && (errno != EEXIST))
1066                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_netin_dir, strerror(errno));
1067         if (chown(ctdl_netin_dir, CTDLUID, (-1)) != 0)
1068                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netin_dir, strerror(errno));
1069         if ((mkdir(ctdl_nettmp_dir, 0700) != 0) && (errno != EEXIST))
1070                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_nettmp_dir, strerror(errno));
1071         if (chown(ctdl_nettmp_dir, CTDLUID, (-1)) != 0)
1072                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_nettmp_dir, strerror(errno));
1073         if ((mkdir(ctdl_netout_dir, 0700) != 0) && (errno != EEXIST))
1074                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_netout_dir, strerror(errno));
1075         if (chown(ctdl_netout_dir, CTDLUID, (-1)) != 0)
1076                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netout_dir, strerror(errno));
1077 }
1078
1079 /*
1080  * Module entry point
1081  */
1082 CTDL_MODULE_INIT(network_spool)
1083 {
1084         if (!threading)
1085         {
1086                 CtdlREGISTERRoomCfgType(subpending,       ParseSubPendingLine,   0, 5, SerializeGeneric,  DeleteGenericCfgLine); /// todo: move this to mailinglist manager
1087                 CtdlREGISTERRoomCfgType(unsubpending,     ParseUnSubPendingLine, 0, 4, SerializeGeneric,  DeleteGenericCfgLine); /// todo: move this to mailinglist manager
1088                 CtdlREGISTERRoomCfgType(lastsent,         ParseLastSent,         1, 1, SerializeLastSent, DeleteLastSent);
1089                 CtdlREGISTERRoomCfgType(ignet_push_share, ParseGeneric,          0, 2, SerializeGeneric,  DeleteGenericCfgLine); // [remotenode|remoteroomname (optional)]// todo: move this to the ignet client
1090                 CtdlREGISTERRoomCfgType(listrecp,         ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
1091                 CtdlREGISTERRoomCfgType(digestrecp,       ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
1092                 CtdlREGISTERRoomCfgType(participate,      ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
1093                 CtdlREGISTERRoomCfgType(roommailalias,    ParseRoomAlias,        0, 1, SerializeGeneric,  DeleteGenericCfgLine);
1094
1095                 create_spool_dirs();
1096 //////todo              CtdlRegisterCleanupHook(destroy_network_queue_room);
1097         }
1098         return "network_spool";
1099 }