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