citadel/modules/network/serv_netspool.c

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