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 /*
 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 RoomNetCfg SpoolCfgs [4] = {
 146         listrecp,
 147         digestrecp,
 148         participate,
 149         ignet_push_share
 150 };
 151
 152
 153 int HaveSpoolConfig(OneRoomNetCfg* RNCfg)
 154 {
 155         int i;
 156         int interested = 0;
 157         for (i=0; i < 4; i++) if (RNCfg->NetConfigs[SpoolCfgs[i]] == NULL) interested = 1;
 158         return interested;
 159 }
 160
 161
 162
 163 void InspectQueuedRoom(SpoolControl **pSC,
 164                        RoomProcList *room_to_spool,
 165                        HashList *working_ignetcfg,
 166                        HashList *the_netmap)
 167 {
 168         SpoolControl *sc;
 169         int i = 0;
 170
 171         sc = (SpoolControl*)malloc(sizeof(SpoolControl));
 172         memset(sc, 0, sizeof(SpoolControl));
 173         sc->RNCfg = room_to_spool->OneRNCfg;
 174         sc->lastsent = room_to_spool->lastsent;
 175         sc->working_ignetcfg = working_ignetcfg;
 176         sc->the_netmap = the_netmap;
 177
 178         /*
 179          * If the room doesn't exist, don't try to perform its networking tasks.
 180          * Normally this should never happen, but once in a while maybe a room gets
 181          * queued for networking and then deleted before it can happen.
 182          */
 183         if (CtdlGetRoom(&sc->room, room_to_spool->name) != 0) {
 184                 syslog(LOG_CRIT, "ERROR: cannot load <%s>\n", room_to_spool->name);
 185                 free(sc);
 186                 return;
 187         }
 188         if (sc->room.QRhighest <= sc->lastsent)
 189         {
 190                 syslog(LOG_DEBUG, "nothing to do for <%s>\n", room_to_spool->name);
 191                 free(sc);
 192                 return;
 193         }
 194
 195         if (sc->RNCfg == NULL)
 196                 sc->RNCfg = CtdlGetNetCfgForRoom(sc->room.QRnumber);
 197
 198         if (!HaveSpoolConfig(sc->RNCfg))
 199         {
 200                 free(sc);
 201                 /* nothing to do for this room... */
 202                 return;
 203         }
 204
 205         /* Now lets remember whats needed for the actual work... */
 206
 207         for (i=0; i < 4; i++)
 208         {
 209                 aggregate_recipients(&sc->Users[SpoolCfgs[i]], SpoolCfgs[i], sc->RNCfg);
 210         }
 211
 212         if (StrLength(sc->RNCfg->Sender) > 0)
 213                 sc->Users[roommailalias] = NewStrBufDup(sc->RNCfg->Sender);
 214
 215         sc->next = *pSC;
 216         *pSC = sc;
 217
 218 }
 219
 220
 221 /*
 222  * Batch up and send all outbound traffic from the current room
 223  */
 224 void network_spoolout_room(SpoolControl *sc)
 225 {
 226         struct CitContext *CCC = CC;
 227         char buf[SIZ];
 228         int i;
 229         long lastsent;
 230
 231         /*
 232          * If the room doesn't exist, don't try to perform its networking tasks.
 233          * Normally this should never happen, but once in a while maybe a room gets
 234          * queued for networking and then deleted before it can happen.
 235          */
 236         memcpy (&CCC->room, &sc->room, sizeof(ctdlroom));
 237
 238         syslog(LOG_INFO, "Networking started for <%s>\n", CCC->room.QRname);
 239
 240         /* If there are digest recipients, we have to build a digest */
 241         if (sc->Users[digestrecp] != NULL) {
 242                 sc->digestfp = tmpfile();
 243                 fprintf(sc->digestfp, "Content-type: text/plain\n\n");
 244         }
 245
 246         /* remember where we started... */
 247         lastsent = sc->lastsent;
 248
 249         /* Do something useful */
 250         CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
 251                 network_spool_msg, sc);
 252
 253         /* If we wrote a digest, deliver it and then close it */
 254         if (StrLength(sc->Users[roommailalias]) > 0)
 255         {
 256                 long len;
 257                 len = StrLength(sc->Users[roommailalias]);
 258                 if (len + 1 > sizeof(buf))
 259                         len = sizeof(buf) - 1;
 260                 memcpy(buf, ChrPtr(sc->Users[roommailalias]), len);
 261                 buf[len] = '\0';
 262         }
 263         else
 264         {
 265                 snprintf(buf, sizeof buf, "room_%s@%s",
 266                          CCC->room.QRname, config.c_fqdn);
 267         }
 268
 269         for (i=0; buf[i]; ++i) {
 270                 buf[i] = tolower(buf[i]);
 271                 if (isspace(buf[i])) buf[i] = '_';
 272         }
 273         if (sc->digestfp != NULL) {
 274                 fprintf(sc->digestfp,
 275                         " -----------------------------------"
 276                         "------------------------------------"
 277                         "-------\n"
 278                         "You are subscribed to the '%s' "
 279                         "list.\n"
 280                         "To post to the list: %s\n",
 281                         CCC->room.QRname, buf
 282                 );
 283                 network_deliver_digest(sc);     /* deliver and close */
 284         }
 285
 286         /* Now rewrite the config file */
 287         if (sc->lastsent != lastsent)
 288         {
 289                 sc->RNCfg = CtdlGetNetCfgForRoom(sc->room.QRnumber);
 290
 291                 sc->RNCfg->lastsent = sc->lastsent;
 292                 sc->RNCfg->changed = 1;
 293         }
 294         end_critical_section(S_NETCONFIGS);
 295 }
 296
 297 /*
 298  * Process a buffer containing a single message from a single file
 299  * from the inbound queue
 300  */
 301 void network_process_buffer(char *buffer, long size, HashList *working_ignetcfg, HashList *the_netmap, int *netmap_changed)
 302 {
 303         struct CitContext *CCC = CC;
 304         StrBuf *Buf = NULL;
 305         struct CtdlMessage *msg = NULL;
 306         long pos;
 307         int field;
 308         struct recptypes *recp = NULL;
 309         char target_room[ROOMNAMELEN];
 310         struct ser_ret sermsg;
 311         char *oldpath = NULL;
 312         char filename[PATH_MAX];
 313         FILE *fp;
 314         const StrBuf *nexthop = NULL;
 315         unsigned char firstbyte;
 316         unsigned char lastbyte;
 317
 318         QN_syslog(LOG_DEBUG, "network_process_buffer() processing %ld bytes\n", size);
 319
 320         /* Validate just a little bit.  First byte should be FF and * last byte should be 00. */
 321         firstbyte = buffer[0];
 322         lastbyte = buffer[size-1];
 323         if ( (firstbyte != 255) || (lastbyte != 0) ) {
 324                 QN_syslog(LOG_ERR, "Corrupt message ignored.  Length=%ld, firstbyte = %d, lastbyte = %d\n",
 325                           size, firstbyte, lastbyte);
 326                 return;
 327         }
 328
 329         /* Set default target room to trash */
 330         strcpy(target_room, TWITROOM);
 331
 332         /* Load the message into memory */
 333         msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
 334         memset(msg, 0, sizeof(struct CtdlMessage));
 335         msg->cm_magic = CTDLMESSAGE_MAGIC;
 336         msg->cm_anon_type = buffer[1];
 337         msg->cm_format_type = buffer[2];
 338
 339         for (pos = 3; pos < size; ++pos) {
 340                 field = buffer[pos];
 341                 msg->cm_fields[field] = strdup(&buffer[pos+1]);
 342                 pos = pos + strlen(&buffer[(int)pos]);
 343         }
 344
 345         /* Check for message routing */
 346         if (msg->cm_fields['D'] != NULL) {
 347                 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
 348
 349                         /* route the message */
 350                         Buf = NewStrBufPlain(msg->cm_fields['D'], -1);
 351                         if (CtdlIsValidNode(&nexthop,
 352                                             NULL,
 353                                             Buf,
 354                                             working_ignetcfg,
 355                                             the_netmap) == 0)
 356                         {
 357                                 /* prepend our node to the path */
 358                                 if (msg->cm_fields['P'] != NULL) {
 359                                         oldpath = msg->cm_fields['P'];
 360                                         msg->cm_fields['P'] = NULL;
 361                                 }
 362                                 else {
 363                                         oldpath = strdup("unknown_user");
 364                                 }
 365                                 size = strlen(oldpath) + SIZ;
 366                                 msg->cm_fields['P'] = malloc(size);
 367                                 snprintf(msg->cm_fields['P'], size, "%s!%s",
 368                                         config.c_nodename, oldpath);
 369                                 free(oldpath);
 370
 371                                 /* serialize the message */
 372                                 serialize_message(&sermsg, msg);
 373
 374                                 /* now send it */
 375                                 if (StrLength(nexthop) == 0) {
 376                                         nexthop = Buf;
 377                                 }
 378                                 snprintf(filename,
 379                                          sizeof filename,
 380                                          "%s/%s@%lx%x",
 381                                          ctdl_netout_dir,
 382                                          ChrPtr(nexthop),
 383                                          time(NULL),
 384                                          rand()
 385                                 );
 386                                 QN_syslog(LOG_DEBUG, "Appending to %s\n", filename);
 387                                 fp = fopen(filename, "ab");
 388                                 if (fp != NULL) {
 389                                         fwrite(sermsg.ser, sermsg.len, 1, fp);
 390                                         fclose(fp);
 391                                 }
 392                                 else {
 393                                         QN_syslog(LOG_ERR, "%s: %s\n", filename, strerror(errno));
 394                                 }
 395                                 free(sermsg.ser);
 396                                 CtdlFreeMessage(msg);
 397                                 FreeStrBuf(&Buf);
 398                                 return;
 399                         }
 400
 401                         else {  /* invalid destination node name */
 402                                 FreeStrBuf(&Buf);
 403
 404                                 network_bounce(msg,
 405 "A message you sent could not be delivered due to an invalid destination node"
 406 " name.  Please check the address and try sending the message again.\n");
 407                                 msg = NULL;
 408                                 return;
 409
 410                         }
 411                 }
 412         }
 413
 414         /*
 415          * Check to see if we already have a copy of this message, and
 416          * abort its processing if so.  (We used to post a warning to Aide>
 417          * every time this happened, but the network is now so densely
 418          * connected that it's inevitable.)
 419          */
 420         if (network_usetable(msg) != 0) {
 421                 CtdlFreeMessage(msg);
 422                 return;
 423         }
 424
 425         /* Learn network topology from the path */
 426         if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
 427                 NetworkLearnTopology(msg->cm_fields['N'],
 428                                      msg->cm_fields['P'],
 429                                      the_netmap,
 430                                      netmap_changed);
 431         }
 432
 433         /* Is the sending node giving us a very persuasive suggestion about
 434          * which room this message should be saved in?  If so, go with that.
 435          */
 436         if (msg->cm_fields['C'] != NULL) {
 437                 safestrncpy(target_room, msg->cm_fields['C'], sizeof target_room);
 438         }
 439
 440         /* Otherwise, does it have a recipient?  If so, validate it... */
 441         else if (msg->cm_fields['R'] != NULL) {
 442                 recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
 443                 if (recp != NULL) if (recp->num_error != 0) {
 444                         network_bounce(msg,
 445                                 "A message you sent could not be delivered due to an invalid address.\n"
 446                                 "Please check the address and try sending the message again.\n");
 447                         msg = NULL;
 448                         free_recipients(recp);
 449                         QNM_syslog(LOG_DEBUG, "Bouncing message due to invalid recipient address.\n");
 450                         return;
 451                 }
 452                 strcpy(target_room, "");        /* no target room if mail */
 453         }
 454
 455         /* Our last shot at finding a home for this message is to see if
 456          * it has the O field (Originating room) set.
 457          */
 458         else if (msg->cm_fields['O'] != NULL) {
 459                 safestrncpy(target_room, msg->cm_fields['O'], sizeof target_room);
 460         }
 461
 462         /* Strip out fields that are only relevant during transit */
 463         if (msg->cm_fields['D'] != NULL) {
 464                 free(msg->cm_fields['D']);
 465                 msg->cm_fields['D'] = NULL;
 466         }
 467         if (msg->cm_fields['C'] != NULL) {
 468                 free(msg->cm_fields['C']);
 469                 msg->cm_fields['C'] = NULL;
 470         }
 471
 472         /* save the message into a room */
 473         if (PerformNetprocHooks(msg, target_room) == 0) {
 474                 msg->cm_flags = CM_SKIP_HOOKS;
 475                 CtdlSubmitMsg(msg, recp, target_room, 0);
 476         }
 477         CtdlFreeMessage(msg);
 478         free_recipients(recp);
 479 }
 480
 481
 482 /*
 483  * Process a single message from a single file from the inbound queue
 484  */
 485 void network_process_message(FILE *fp,
 486                              long msgstart,
 487                              long msgend,
 488                              HashList *working_ignetcfg,
 489                              HashList *the_netmap,
 490                              int *netmap_changed)
 491 {
 492         long hold_pos;
 493         long size;
 494         char *buffer;
 495
 496         hold_pos = ftell(fp);
 497         size = msgend - msgstart + 1;
 498         buffer = malloc(size);
 499         if (buffer != NULL) {
 500                 fseek(fp, msgstart, SEEK_SET);
 501                 if (fread(buffer, size, 1, fp) > 0) {
 502                         network_process_buffer(buffer,
 503                                                size,
 504                                                working_ignetcfg,
 505                                                the_netmap,
 506                                                netmap_changed);
 507                 }
 508                 free(buffer);
 509         }
 510
 511         fseek(fp, hold_pos, SEEK_SET);
 512 }
 513
 514
 515 /*
 516  * Process a single file from the inbound queue
 517  */
 518 void network_process_file(char *filename,
 519                           HashList *working_ignetcfg,
 520                           HashList *the_netmap,
 521                           int *netmap_changed)
 522 {
 523         struct CitContext *CCC = CC;
 524         FILE *fp;
 525         long msgstart = (-1L);
 526         long msgend = (-1L);
 527         long msgcur = 0L;
 528         int ch;
 529
 530
 531         fp = fopen(filename, "rb");
 532         if (fp == NULL) {
 533                 QN_syslog(LOG_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
 534                 return;
 535         }
 536
 537         fseek(fp, 0L, SEEK_END);
 538         QN_syslog(LOG_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
 539         rewind(fp);
 540
 541         /* Look for messages in the data stream and break them out */
 542         while (ch = getc(fp), ch >= 0) {
 543
 544                 if (ch == 255) {
 545                         if (msgstart >= 0L) {
 546                                 msgend = msgcur - 1;
 547                                 network_process_message(fp,
 548                                                         msgstart,
 549                                                         msgend,
 550                                                         working_ignetcfg,
 551                                                         the_netmap,
 552                                                         netmap_changed);
 553                         }
 554                         msgstart = msgcur;
 555                 }
 556
 557                 ++msgcur;
 558         }
 559
 560         msgend = msgcur - 1;
 561         if (msgstart >= 0L) {
 562                 network_process_message(fp,
 563                                         msgstart,
 564                                         msgend,
 565                                         working_ignetcfg,
 566                                         the_netmap,
 567                                         netmap_changed);
 568         }
 569
 570         fclose(fp);
 571         unlink(filename);
 572 }
 573
 574
 575 /*
 576  * Process anything in the inbound queue
 577  */
 578 void network_do_spoolin(HashList *working_ignetcfg, HashList *the_netmap, int *netmap_changed)
 579 {
 580         struct CitContext *CCC = CC;
 581         DIR *dp;
 582         struct dirent *d;
 583         struct dirent *filedir_entry;
 584         struct stat statbuf;
 585         char filename[PATH_MAX];
 586         static time_t last_spoolin_mtime = 0L;
 587         int d_type = 0;
 588         int d_namelen;
 589
 590         /*
 591          * Check the spoolin directory's modification time.  If it hasn't
 592          * been touched, we don't need to scan it.
 593          */
 594         if (stat(ctdl_netin_dir, &statbuf)) return;
 595         if (statbuf.st_mtime == last_spoolin_mtime) {
 596                 QNM_syslog(LOG_DEBUG, "network: nothing in inbound queue\n");
 597                 return;
 598         }
 599         last_spoolin_mtime = statbuf.st_mtime;
 600         QNM_syslog(LOG_DEBUG, "network: processing inbound queue\n");
 601
 602         /*
 603          * Ok, there's something interesting in there, so scan it.
 604          */
 605         dp = opendir(ctdl_netin_dir);
 606         if (dp == NULL) return;
 607
 608         d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 1);
 609         if (d == NULL) {
 610                 closedir(dp);
 611                 return;
 612         }
 613
 614         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 615                (filedir_entry != NULL))
 616         {
 617 #ifdef _DIRENT_HAVE_D_NAMLEN
 618                 d_namelen = filedir_entry->d_namelen;
 619
 620 #else
 621                 d_namelen = strlen(filedir_entry->d_name);
 622 #endif
 623
 624 #ifdef _DIRENT_HAVE_D_TYPE
 625                 d_type = filedir_entry->d_type;
 626 #else
 627                 d_type = DT_UNKNOWN;
 628 #endif
 629                 if ((d_namelen > 1) && filedir_entry->d_name[d_namelen - 1] == '~')
 630                         continue; /* Ignore backup files... */
 631
 632                 if ((d_namelen == 1) &&
 633                     (filedir_entry->d_name[0] == '.'))
 634                         continue;
 635
 636                 if ((d_namelen == 2) &&
 637                     (filedir_entry->d_name[0] == '.') &&
 638                     (filedir_entry->d_name[1] == '.'))
 639                         continue;
 640
 641                 if (d_type == DT_UNKNOWN) {
 642                         struct stat s;
 643                         char path[PATH_MAX];
 644
 645                         snprintf(path,
 646                                  PATH_MAX,
 647                                  "%s/%s",
 648                                  ctdl_netin_dir,
 649                                  filedir_entry->d_name);
 650
 651                         if (lstat(path, &s) == 0) {
 652                                 d_type = IFTODT(s.st_mode);
 653                         }
 654                 }
 655
 656                 switch (d_type)
 657                 {
 658                 case DT_DIR:
 659                         break;
 660                 case DT_LNK: /* TODO: check whether its a file or a directory */
 661                 case DT_REG:
 662                         snprintf(filename,
 663                                 sizeof filename,
 664                                 "%s/%s",
 665                                 ctdl_netin_dir,
 666                                 d->d_name
 667                         );
 668                         network_process_file(filename,
 669                                              working_ignetcfg,
 670                                              the_netmap,
 671                                              netmap_changed);
 672                 }
 673         }
 674
 675         closedir(dp);
 676         free(d);
 677 }
 678
 679 /*
 680  * Step 1: consolidate files in the outbound queue into one file per neighbor node
 681  * Step 2: delete any files in the outbound queue that were for neighbors who no longer exist.
 682  */
 683 void network_consolidate_spoolout(HashList *working_ignetcfg, HashList *the_netmap)
 684 {
 685         struct CitContext *CCC = CC;
 686         IOBuffer IOB;
 687         FDIOBuffer FDIO;
 688         int d_namelen;
 689         DIR *dp;
 690         struct dirent *d;
 691         struct dirent *filedir_entry;
 692         const char *pch;
 693         char spooloutfilename[PATH_MAX];
 694         char filename[PATH_MAX];
 695         const StrBuf *nexthop;
 696         StrBuf *NextHop;
 697         int i;
 698         struct stat statbuf;
 699         int nFailed = 0;
 700         int d_type = 0;
 701
 702
 703         /* Step 1: consolidate files in the outbound queue into one file per neighbor node */
 704         d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 1);
 705         if (d == NULL)  return;
 706
 707         dp = opendir(ctdl_netout_dir);
 708         if (dp == NULL) {
 709                 free(d);
 710                 return;
 711         }
 712
 713         NextHop = NewStrBuf();
 714         memset(&IOB, 0, sizeof(IOBuffer));
 715         memset(&FDIO, 0, sizeof(FDIOBuffer));
 716         FDIO.IOB = &IOB;
 717
 718         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 719                (filedir_entry != NULL))
 720         {
 721 #ifdef _DIRENT_HAVE_D_NAMLEN
 722                 d_namelen = filedir_entry->d_namelen;
 723
 724 #else
 725                 d_namelen = strlen(filedir_entry->d_name);
 726 #endif
 727
 728 #ifdef _DIRENT_HAVE_D_TYPE
 729                 d_type = filedir_entry->d_type;
 730 #else
 731                 d_type = DT_UNKNOWN;
 732 #endif
 733                 if (d_type == DT_DIR)
 734                         continue;
 735
 736                 if ((d_namelen > 1) && filedir_entry->d_name[d_namelen - 1] == '~')
 737                         continue; /* Ignore backup files... */
 738
 739                 if ((d_namelen == 1) &&
 740                     (filedir_entry->d_name[0] == '.'))
 741                         continue;
 742
 743                 if ((d_namelen == 2) &&
 744                     (filedir_entry->d_name[0] == '.') &&
 745                     (filedir_entry->d_name[1] == '.'))
 746                         continue;
 747
 748                 pch = strchr(filedir_entry->d_name, '@');
 749                 if (pch == NULL)
 750                         continue;
 751
 752                 snprintf(filename,
 753                          sizeof filename,
 754                          "%s/%s",
 755                          ctdl_netout_dir,
 756                          filedir_entry->d_name);
 757
 758                 StrBufPlain(NextHop,
 759                             filedir_entry->d_name,
 760                             pch - filedir_entry->d_name);
 761
 762                 snprintf(spooloutfilename,
 763                          sizeof spooloutfilename,
 764                          "%s/%s",
 765                          ctdl_netout_dir,
 766                          ChrPtr(NextHop));
 767
 768                 QN_syslog(LOG_DEBUG, "Consolidate %s to %s\n", filename, ChrPtr(NextHop));
 769                 if (CtdlNetworkTalkingTo(SKEY(NextHop), NTT_CHECK)) {
 770                         nFailed++;
 771                         QN_syslog(LOG_DEBUG,
 772                                   "Currently online with %s - skipping for now\n",
 773                                   ChrPtr(NextHop)
 774                                 );
 775                 }
 776                 else {
 777                         size_t dsize;
 778                         size_t fsize;
 779                         int infd, outfd;
 780                         const char *err = NULL;
 781                         CtdlNetworkTalkingTo(SKEY(NextHop), NTT_ADD);
 782
 783                         infd = open(filename, O_RDONLY);
 784                         if (infd == -1) {
 785                                 nFailed++;
 786                                 QN_syslog(LOG_ERR,
 787                                           "failed to open %s for reading due to %s; skipping.\n",
 788                                           filename, strerror(errno)
 789                                         );
 790                                 CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 791                                 continue;
 792                         }
 793
 794                         outfd = open(spooloutfilename,
 795                                   O_EXCL|O_CREAT|O_NONBLOCK|O_WRONLY,
 796                                   S_IRUSR|S_IWUSR);
 797                         if (outfd == -1)
 798                         {
 799                                 outfd = open(spooloutfilename,
 800                                              O_EXCL|O_NONBLOCK|O_WRONLY,
 801                                              S_IRUSR | S_IWUSR);
 802                         }
 803                         if (outfd == -1) {
 804                                 nFailed++;
 805                                 QN_syslog(LOG_ERR,
 806                                           "failed to open %s for reading due to %s; skipping.\n",
 807                                           spooloutfilename, strerror(errno)
 808                                         );
 809                                 close(infd);
 810                                 CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 811                                 continue;
 812                         }
 813
 814                         dsize = lseek(outfd, 0, SEEK_END);
 815                         lseek(outfd, -dsize, SEEK_SET);
 816
 817                         fstat(infd, &statbuf);
 818                         fsize = statbuf.st_size;
 819 /*
 820                         fsize = lseek(infd, 0, SEEK_END);
 821 */
 822                         IOB.fd = infd;
 823                         FDIOBufferInit(&FDIO, &IOB, outfd, fsize + dsize);
 824                         FDIO.ChunkSendRemain = fsize;
 825                         FDIO.TotalSentAlready = dsize;
 826                         err = NULL;
 827                         errno = 0;
 828                         do {} while ((FileMoveChunked(&FDIO, &err) > 0) && (err == NULL));
 829                         if (err == NULL) {
 830                                 unlink(filename);
 831                         }
 832                         else {
 833                                 nFailed++;
 834                                 QN_syslog(LOG_ERR,
 835                                           "failed to append to %s [%s]; rolling back..\n",
 836                                           spooloutfilename, strerror(errno)
 837                                         );
 838                                 /* whoops partial append?? truncate spooloutfilename again! */
 839                                 ftruncate(outfd, dsize);
 840                         }
 841                         FDIOBufferDelete(&FDIO);
 842                         close(infd);
 843                         close(outfd);
 844                         CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 845                 }
 846         }
 847         closedir(dp);
 848
 849         if (nFailed > 0) {
 850                 FreeStrBuf(&NextHop);
 851                 QN_syslog(LOG_INFO,
 852                           "skipping Spoolcleanup because of %d files unprocessed.\n",
 853                           nFailed
 854                         );
 855
 856                 return;
 857         }
 858
 859         /* Step 2: delete any files in the outbound queue that were for neighbors who no longer exist */
 860         dp = opendir(ctdl_netout_dir);
 861         if (dp == NULL) {
 862                 FreeStrBuf(&NextHop);
 863                 free(d);
 864                 return;
 865         }
 866
 867         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 868                (filedir_entry != NULL))
 869         {
 870 #ifdef _DIRENT_HAVE_D_NAMLEN
 871                 d_namelen = filedir_entry->d_namelen;
 872
 873 #else
 874                 d_namelen = strlen(filedir_entry->d_name);
 875 #endif
 876
 877 #ifdef _DIRENT_HAVE_D_TYPE
 878                 d_type = filedir_entry->d_type;
 879 #else
 880                 d_type = DT_UNKNOWN;
 881 #endif
 882                 if (d_type == DT_DIR)
 883                         continue;
 884
 885                 if ((d_namelen == 1) &&
 886                     (filedir_entry->d_name[0] == '.'))
 887                         continue;
 888
 889                 if ((d_namelen == 2) &&
 890                     (filedir_entry->d_name[0] == '.') &&
 891                     (filedir_entry->d_name[1] == '.'))
 892                         continue;
 893
 894                 pch = strchr(filedir_entry->d_name, '@');
 895                 if (pch == NULL) /* no @ in name? consolidated file. */
 896                         continue;
 897
 898                 StrBufPlain(NextHop,
 899                             filedir_entry->d_name,
 900                             pch - filedir_entry->d_name);
 901
 902                 snprintf(filename,
 903                         sizeof filename,
 904                         "%s/%s",
 905                         ctdl_netout_dir,
 906                         filedir_entry->d_name
 907                 );
 908
 909                 i = CtdlIsValidNode(&nexthop,
 910                                     NULL,
 911                                     NextHop,
 912                                     working_ignetcfg,
 913                                     the_netmap);
 914
 915                 if ( (i != 0) || (StrLength(nexthop) > 0) ) {
 916                         unlink(filename);
 917                 }
 918         }
 919         FreeStrBuf(&NextHop);
 920         free(d);
 921         closedir(dp);
 922 }
 923
 924
 925
 926
 927 /*
 928  * It's ok if these directories already exist.  Just fail silently.
 929  */
 930 void create_spool_dirs(void) {
 931         if ((mkdir(ctdl_spool_dir, 0700) != 0) && (errno != EEXIST))
 932                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_spool_dir, strerror(errno));
 933         if (chown(ctdl_spool_dir, CTDLUID, (-1)) != 0)
 934                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_spool_dir, strerror(errno));
 935         if ((mkdir(ctdl_netin_dir, 0700) != 0) && (errno != EEXIST))
 936                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_netin_dir, strerror(errno));
 937         if (chown(ctdl_netin_dir, CTDLUID, (-1)) != 0)
 938                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netin_dir, strerror(errno));
 939         if ((mkdir(ctdl_nettmp_dir, 0700) != 0) && (errno != EEXIST))
 940                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_nettmp_dir, strerror(errno));
 941         if (chown(ctdl_nettmp_dir, CTDLUID, (-1)) != 0)
 942                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_nettmp_dir, strerror(errno));
 943         if ((mkdir(ctdl_netout_dir, 0700) != 0) && (errno != EEXIST))
 944                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_netout_dir, strerror(errno));
 945         if (chown(ctdl_netout_dir, CTDLUID, (-1)) != 0)
 946                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netout_dir, strerror(errno));
 947 }
 948
 949 /*
 950  * Module entry point
 951  */
 952 CTDL_MODULE_INIT(network_spool)
 953 {
 954         if (!threading)
 955         {
 956                 CtdlREGISTERRoomCfgType(subpending,       ParseSubPendingLine,   0, 5, SerializeGeneric,  DeleteGenericCfgLine); /// todo: move this to mailinglist manager
 957                 CtdlREGISTERRoomCfgType(unsubpending,     ParseUnSubPendingLine, 0, 4, SerializeGeneric,  DeleteGenericCfgLine); /// todo: move this to mailinglist manager
 958                 CtdlREGISTERRoomCfgType(lastsent,         ParseLastSent,         1, 1, SerializeLastSent, DeleteLastSent);
 959                 CtdlREGISTERRoomCfgType(ignet_push_share, ParseGeneric,          0, 2, SerializeGeneric,  DeleteGenericCfgLine); // [remotenode|remoteroomname (optional)]// todo: move this to the ignet client
 960                 CtdlREGISTERRoomCfgType(listrecp,         ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
 961                 CtdlREGISTERRoomCfgType(digestrecp,       ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
 962                 CtdlREGISTERRoomCfgType(participate,      ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
 963                 CtdlREGISTERRoomCfgType(roommailalias,    ParseRoomAlias,        0, 1, SerializeGeneric,  DeleteGenericCfgLine);
 964
 965                 create_spool_dirs();
 966 //////todo              CtdlRegisterCleanupHook(destroy_network_queue_room);
 967         }
 968         return "network_spool";
 969 }