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