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