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 static const RoomNetCfg SpoolCfgs [4] = {
 146         listrecp,
 147         digestrecp,
 148         participate,
 149         ignet_push_share
 150 };
 151
 152 static const long SpoolCfgsCopyN [4] = {
 153         1, 1, 1, 2
 154 };
 155
 156 int HaveSpoolConfig(OneRoomNetCfg* RNCfg)
 157 {
 158         int i;
 159         int interested = 0;
 160         for (i=0; i < 4; i++) if (RNCfg->NetConfigs[SpoolCfgs[i]] == NULL) interested = 1;
 161         return interested;
 162 }
 163
 164
 165
 166 void InspectQueuedRoom(SpoolControl **pSC,
 167                        RoomProcList *room_to_spool,
 168                        HashList *working_ignetcfg,
 169                        HashList *the_netmap)
 170 {
 171         SpoolControl *sc;
 172         int i = 0;
 173
 174         sc = (SpoolControl*)malloc(sizeof(SpoolControl));
 175         memset(sc, 0, sizeof(SpoolControl));
 176         sc->RNCfg = room_to_spool->OneRNCfg;
 177         sc->lastsent = room_to_spool->lastsent;
 178         sc->working_ignetcfg = working_ignetcfg;
 179         sc->the_netmap = the_netmap;
 180
 181         /*
 182          * If the room doesn't exist, don't try to perform its networking tasks.
 183          * Normally this should never happen, but once in a while maybe a room gets
 184          * queued for networking and then deleted before it can happen.
 185          */
 186         if (CtdlGetRoom(&sc->room, room_to_spool->name) != 0) {
 187                 syslog(LOG_CRIT, "ERROR: cannot load <%s>\n", room_to_spool->name);
 188                 free(sc);
 189                 return;
 190         }
 191         if (sc->room.QRhighest <= sc->lastsent)
 192         {
 193                 syslog(LOG_DEBUG, "nothing to do for <%s>\n", room_to_spool->name);
 194                 free(sc);
 195                 return;
 196         }
 197
 198         if (sc->RNCfg == NULL)
 199                 sc->RNCfg = CtdlGetNetCfgForRoom(sc->room.QRnumber);
 200
 201         if (!HaveSpoolConfig(sc->RNCfg))
 202         {
 203                 free(sc);
 204                 /* nothing to do for this room... */
 205                 return;
 206         }
 207
 208         /* Now lets remember whats needed for the actual work... */
 209
 210         for (i=0; i < 4; i++)
 211         {
 212                 aggregate_recipients(&sc->Users[SpoolCfgs[i]],
 213                                      SpoolCfgs[i],
 214                                      sc->RNCfg,
 215                                      SpoolCfgsCopyN[i]);
 216         }
 217
 218         if (StrLength(sc->RNCfg->Sender) > 0)
 219                 sc->Users[roommailalias] = NewStrBufDup(sc->RNCfg->Sender);
 220
 221         sc->next = *pSC;
 222         *pSC = sc;
 223
 224 }
 225
 226
 227 /*
 228  * Batch up and send all outbound traffic from the current room
 229  */
 230 void network_spoolout_room(SpoolControl *sc)
 231 {
 232         struct CitContext *CCC = CC;
 233         char buf[SIZ];
 234         int i;
 235         long lastsent;
 236
 237         /*
 238          * If the room doesn't exist, don't try to perform its networking tasks.
 239          * Normally this should never happen, but once in a while maybe a room gets
 240          * queued for networking and then deleted before it can happen.
 241          */
 242         memcpy (&CCC->room, &sc->room, sizeof(ctdlroom));
 243
 244         syslog(LOG_INFO, "Networking started for <%s>\n", CCC->room.QRname);
 245
 246         /* If there are digest recipients, we have to build a digest */
 247         if (sc->Users[digestrecp] != NULL) {
 248                 sc->digestfp = tmpfile();
 249                 fprintf(sc->digestfp, "Content-type: text/plain\n\n");
 250         }
 251
 252         /* remember where we started... */
 253         lastsent = sc->lastsent;
 254
 255         /* Do something useful */
 256         CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
 257                 network_spool_msg, sc);
 258
 259         /* If we wrote a digest, deliver it and then close it */
 260         if (StrLength(sc->Users[roommailalias]) > 0)
 261         {
 262                 long len;
 263                 len = StrLength(sc->Users[roommailalias]);
 264                 if (len + 1 > sizeof(buf))
 265                         len = sizeof(buf) - 1;
 266                 memcpy(buf, ChrPtr(sc->Users[roommailalias]), len);
 267                 buf[len] = '\0';
 268         }
 269         else
 270         {
 271                 snprintf(buf, sizeof buf, "room_%s@%s",
 272                          CCC->room.QRname, config.c_fqdn);
 273         }
 274
 275         for (i=0; buf[i]; ++i) {
 276                 buf[i] = tolower(buf[i]);
 277                 if (isspace(buf[i])) buf[i] = '_';
 278         }
 279         if (sc->digestfp != NULL) {
 280                 fprintf(sc->digestfp,
 281                         " -----------------------------------"
 282                         "------------------------------------"
 283                         "-------\n"
 284                         "You are subscribed to the '%s' "
 285                         "list.\n"
 286                         "To post to the list: %s\n",
 287                         CCC->room.QRname, buf
 288                 );
 289                 network_deliver_digest(sc);     /* deliver and close */
 290         }
 291
 292         /* Now rewrite the config file */
 293         if (sc->lastsent != lastsent)
 294         {
 295                 sc->RNCfg = CtdlGetNetCfgForRoom(sc->room.QRnumber);
 296
 297                 sc->RNCfg->lastsent = sc->lastsent;
 298                 sc->RNCfg->changed = 1;
 299         }
 300         end_critical_section(S_NETCONFIGS);
 301 }
 302
 303 /*
 304  * Process a buffer containing a single message from a single file
 305  * from the inbound queue
 306  */
 307 void network_process_buffer(char *buffer, long size, HashList *working_ignetcfg, HashList *the_netmap, int *netmap_changed)
 308 {
 309         struct CitContext *CCC = CC;
 310         StrBuf *Buf = NULL;
 311         struct CtdlMessage *msg = NULL;
 312         long pos;
 313         int field;
 314         struct recptypes *recp = NULL;
 315         char target_room[ROOMNAMELEN];
 316         struct ser_ret sermsg;
 317         char *oldpath = NULL;
 318         char filename[PATH_MAX];
 319         FILE *fp;
 320         const StrBuf *nexthop = NULL;
 321         unsigned char firstbyte;
 322         unsigned char lastbyte;
 323
 324         QN_syslog(LOG_DEBUG, "network_process_buffer() processing %ld bytes\n", size);
 325
 326         /* Validate just a little bit.  First byte should be FF and * last byte should be 00. */
 327         firstbyte = buffer[0];
 328         lastbyte = buffer[size-1];
 329         if ( (firstbyte != 255) || (lastbyte != 0) ) {
 330                 QN_syslog(LOG_ERR, "Corrupt message ignored.  Length=%ld, firstbyte = %d, lastbyte = %d\n",
 331                           size, firstbyte, lastbyte);
 332                 return;
 333         }
 334
 335         /* Set default target room to trash */
 336         strcpy(target_room, TWITROOM);
 337
 338         /* Load the message into memory */
 339         msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
 340         memset(msg, 0, sizeof(struct CtdlMessage));
 341         msg->cm_magic = CTDLMESSAGE_MAGIC;
 342         msg->cm_anon_type = buffer[1];
 343         msg->cm_format_type = buffer[2];
 344
 345         for (pos = 3; pos < size; ++pos) {
 346                 field = buffer[pos];
 347                 msg->cm_fields[field] = strdup(&buffer[pos+1]);
 348                 pos = pos + strlen(&buffer[(int)pos]);
 349         }
 350
 351         /* Check for message routing */
 352         if (msg->cm_fields['D'] != NULL) {
 353                 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
 354
 355                         /* route the message */
 356                         Buf = NewStrBufPlain(msg->cm_fields['D'], -1);
 357                         if (CtdlIsValidNode(&nexthop,
 358                                             NULL,
 359                                             Buf,
 360                                             working_ignetcfg,
 361                                             the_netmap) == 0)
 362                         {
 363                                 /* prepend our node to the path */
 364                                 if (msg->cm_fields['P'] != NULL) {
 365                                         oldpath = msg->cm_fields['P'];
 366                                         msg->cm_fields['P'] = NULL;
 367                                 }
 368                                 else {
 369                                         oldpath = strdup("unknown_user");
 370                                 }
 371                                 size = strlen(oldpath) + SIZ;
 372                                 msg->cm_fields['P'] = malloc(size);
 373                                 snprintf(msg->cm_fields['P'], size, "%s!%s",
 374                                         config.c_nodename, oldpath);
 375                                 free(oldpath);
 376
 377                                 /* serialize the message */
 378                                 serialize_message(&sermsg, msg);
 379
 380                                 /* now send it */
 381                                 if (StrLength(nexthop) == 0) {
 382                                         nexthop = Buf;
 383                                 }
 384                                 snprintf(filename,
 385                                          sizeof filename,
 386                                          "%s/%s@%lx%x",
 387                                          ctdl_netout_dir,
 388                                          ChrPtr(nexthop),
 389                                          time(NULL),
 390                                          rand()
 391                                 );
 392                                 QN_syslog(LOG_DEBUG, "Appending to %s\n", filename);
 393                                 fp = fopen(filename, "ab");
 394                                 if (fp != NULL) {
 395                                         fwrite(sermsg.ser, sermsg.len, 1, fp);
 396                                         fclose(fp);
 397                                 }
 398                                 else {
 399                                         QN_syslog(LOG_ERR, "%s: %s\n", filename, strerror(errno));
 400                                 }
 401                                 free(sermsg.ser);
 402                                 CtdlFreeMessage(msg);
 403                                 FreeStrBuf(&Buf);
 404                                 return;
 405                         }
 406
 407                         else {  /* invalid destination node name */
 408                                 FreeStrBuf(&Buf);
 409
 410                                 network_bounce(msg,
 411 "A message you sent could not be delivered due to an invalid destination node"
 412 " name.  Please check the address and try sending the message again.\n");
 413                                 msg = NULL;
 414                                 return;
 415
 416                         }
 417                 }
 418         }
 419
 420         /*
 421          * Check to see if we already have a copy of this message, and
 422          * abort its processing if so.  (We used to post a warning to Aide>
 423          * every time this happened, but the network is now so densely
 424          * connected that it's inevitable.)
 425          */
 426         if (network_usetable(msg) != 0) {
 427                 CtdlFreeMessage(msg);
 428                 return;
 429         }
 430
 431         /* Learn network topology from the path */
 432         if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
 433                 NetworkLearnTopology(msg->cm_fields['N'],
 434                                      msg->cm_fields['P'],
 435                                      the_netmap,
 436                                      netmap_changed);
 437         }
 438
 439         /* Is the sending node giving us a very persuasive suggestion about
 440          * which room this message should be saved in?  If so, go with that.
 441          */
 442         if (msg->cm_fields['C'] != NULL) {
 443                 safestrncpy(target_room, msg->cm_fields['C'], sizeof target_room);
 444         }
 445
 446         /* Otherwise, does it have a recipient?  If so, validate it... */
 447         else if (msg->cm_fields['R'] != NULL) {
 448                 recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
 449                 if (recp != NULL) if (recp->num_error != 0) {
 450                         network_bounce(msg,
 451                                 "A message you sent could not be delivered due to an invalid address.\n"
 452                                 "Please check the address and try sending the message again.\n");
 453                         msg = NULL;
 454                         free_recipients(recp);
 455                         QNM_syslog(LOG_DEBUG, "Bouncing message due to invalid recipient address.\n");
 456                         return;
 457                 }
 458                 strcpy(target_room, "");        /* no target room if mail */
 459         }
 460
 461         /* Our last shot at finding a home for this message is to see if
 462          * it has the O field (Originating room) set.
 463          */
 464         else if (msg->cm_fields['O'] != NULL) {
 465                 safestrncpy(target_room, msg->cm_fields['O'], sizeof target_room);
 466         }
 467
 468         /* Strip out fields that are only relevant during transit */
 469         if (msg->cm_fields['D'] != NULL) {
 470                 free(msg->cm_fields['D']);
 471                 msg->cm_fields['D'] = NULL;
 472         }
 473         if (msg->cm_fields['C'] != NULL) {
 474                 free(msg->cm_fields['C']);
 475                 msg->cm_fields['C'] = NULL;
 476         }
 477
 478         /* save the message into a room */
 479         if (PerformNetprocHooks(msg, target_room) == 0) {
 480                 msg->cm_flags = CM_SKIP_HOOKS;
 481                 CtdlSubmitMsg(msg, recp, target_room, 0);
 482         }
 483         CtdlFreeMessage(msg);
 484         free_recipients(recp);
 485 }
 486
 487
 488 /*
 489  * Process a single message from a single file from the inbound queue
 490  */
 491 void network_process_message(FILE *fp,
 492                              long msgstart,
 493                              long msgend,
 494                              HashList *working_ignetcfg,
 495                              HashList *the_netmap,
 496                              int *netmap_changed)
 497 {
 498         long hold_pos;
 499         long size;
 500         char *buffer;
 501
 502         hold_pos = ftell(fp);
 503         size = msgend - msgstart + 1;
 504         buffer = malloc(size);
 505         if (buffer != NULL) {
 506                 fseek(fp, msgstart, SEEK_SET);
 507                 if (fread(buffer, size, 1, fp) > 0) {
 508                         network_process_buffer(buffer,
 509                                                size,
 510                                                working_ignetcfg,
 511                                                the_netmap,
 512                                                netmap_changed);
 513                 }
 514                 free(buffer);
 515         }
 516
 517         fseek(fp, hold_pos, SEEK_SET);
 518 }
 519
 520
 521 /*
 522  * Process a single file from the inbound queue
 523  */
 524 void network_process_file(char *filename,
 525                           HashList *working_ignetcfg,
 526                           HashList *the_netmap,
 527                           int *netmap_changed)
 528 {
 529         struct CitContext *CCC = CC;
 530         FILE *fp;
 531         long msgstart = (-1L);
 532         long msgend = (-1L);
 533         long msgcur = 0L;
 534         int ch;
 535
 536
 537         fp = fopen(filename, "rb");
 538         if (fp == NULL) {
 539                 QN_syslog(LOG_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
 540                 return;
 541         }
 542
 543         fseek(fp, 0L, SEEK_END);
 544         QN_syslog(LOG_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
 545         rewind(fp);
 546
 547         /* Look for messages in the data stream and break them out */
 548         while (ch = getc(fp), ch >= 0) {
 549
 550                 if (ch == 255) {
 551                         if (msgstart >= 0L) {
 552                                 msgend = msgcur - 1;
 553                                 network_process_message(fp,
 554                                                         msgstart,
 555                                                         msgend,
 556                                                         working_ignetcfg,
 557                                                         the_netmap,
 558                                                         netmap_changed);
 559                         }
 560                         msgstart = msgcur;
 561                 }
 562
 563                 ++msgcur;
 564         }
 565
 566         msgend = msgcur - 1;
 567         if (msgstart >= 0L) {
 568                 network_process_message(fp,
 569                                         msgstart,
 570                                         msgend,
 571                                         working_ignetcfg,
 572                                         the_netmap,
 573                                         netmap_changed);
 574         }
 575
 576         fclose(fp);
 577         unlink(filename);
 578 }
 579
 580
 581 /*
 582  * Process anything in the inbound queue
 583  */
 584 void network_do_spoolin(HashList *working_ignetcfg, HashList *the_netmap, int *netmap_changed)
 585 {
 586         struct CitContext *CCC = CC;
 587         DIR *dp;
 588         struct dirent *d;
 589         struct dirent *filedir_entry;
 590         struct stat statbuf;
 591         char filename[PATH_MAX];
 592         static time_t last_spoolin_mtime = 0L;
 593         int d_type = 0;
 594         int d_namelen;
 595
 596         /*
 597          * Check the spoolin directory's modification time.  If it hasn't
 598          * been touched, we don't need to scan it.
 599          */
 600         if (stat(ctdl_netin_dir, &statbuf)) return;
 601         if (statbuf.st_mtime == last_spoolin_mtime) {
 602                 QNM_syslog(LOG_DEBUG, "network: nothing in inbound queue\n");
 603                 return;
 604         }
 605         last_spoolin_mtime = statbuf.st_mtime;
 606         QNM_syslog(LOG_DEBUG, "network: processing inbound queue\n");
 607
 608         /*
 609          * Ok, there's something interesting in there, so scan it.
 610          */
 611         dp = opendir(ctdl_netin_dir);
 612         if (dp == NULL) return;
 613
 614         d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 1);
 615         if (d == NULL) {
 616                 closedir(dp);
 617                 return;
 618         }
 619
 620         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 621                (filedir_entry != NULL))
 622         {
 623 #ifdef _DIRENT_HAVE_D_NAMLEN
 624                 d_namelen = filedir_entry->d_namelen;
 625
 626 #else
 627                 d_namelen = strlen(filedir_entry->d_name);
 628 #endif
 629
 630 #ifdef _DIRENT_HAVE_D_TYPE
 631                 d_type = filedir_entry->d_type;
 632 #else
 633                 d_type = DT_UNKNOWN;
 634 #endif
 635                 if ((d_namelen > 1) && filedir_entry->d_name[d_namelen - 1] == '~')
 636                         continue; /* Ignore backup files... */
 637
 638                 if ((d_namelen == 1) &&
 639                     (filedir_entry->d_name[0] == '.'))
 640                         continue;
 641
 642                 if ((d_namelen == 2) &&
 643                     (filedir_entry->d_name[0] == '.') &&
 644                     (filedir_entry->d_name[1] == '.'))
 645                         continue;
 646
 647                 if (d_type == DT_UNKNOWN) {
 648                         struct stat s;
 649                         char path[PATH_MAX];
 650
 651                         snprintf(path,
 652                                  PATH_MAX,
 653                                  "%s/%s",
 654                                  ctdl_netin_dir,
 655                                  filedir_entry->d_name);
 656
 657                         if (lstat(path, &s) == 0) {
 658                                 d_type = IFTODT(s.st_mode);
 659                         }
 660                 }
 661
 662                 switch (d_type)
 663                 {
 664                 case DT_DIR:
 665                         break;
 666                 case DT_LNK: /* TODO: check whether its a file or a directory */
 667                 case DT_REG:
 668                         snprintf(filename,
 669                                 sizeof filename,
 670                                 "%s/%s",
 671                                 ctdl_netin_dir,
 672                                 d->d_name
 673                         );
 674                         network_process_file(filename,
 675                                              working_ignetcfg,
 676                                              the_netmap,
 677                                              netmap_changed);
 678                 }
 679         }
 680
 681         closedir(dp);
 682         free(d);
 683 }
 684
 685 /*
 686  * Step 1: consolidate files in the outbound queue into one file per neighbor node
 687  * Step 2: delete any files in the outbound queue that were for neighbors who no longer exist.
 688  */
 689 void network_consolidate_spoolout(HashList *working_ignetcfg, HashList *the_netmap)
 690 {
 691         struct CitContext *CCC = CC;
 692         IOBuffer IOB;
 693         FDIOBuffer FDIO;
 694         int d_namelen;
 695         DIR *dp;
 696         struct dirent *d;
 697         struct dirent *filedir_entry;
 698         const char *pch;
 699         char spooloutfilename[PATH_MAX];
 700         char filename[PATH_MAX];
 701         const StrBuf *nexthop;
 702         StrBuf *NextHop;
 703         int i;
 704         struct stat statbuf;
 705         int nFailed = 0;
 706         int d_type = 0;
 707
 708
 709         /* Step 1: consolidate files in the outbound queue into one file per neighbor node */
 710         d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 1);
 711         if (d == NULL)  return;
 712
 713         dp = opendir(ctdl_netout_dir);
 714         if (dp == NULL) {
 715                 free(d);
 716                 return;
 717         }
 718
 719         NextHop = NewStrBuf();
 720         memset(&IOB, 0, sizeof(IOBuffer));
 721         memset(&FDIO, 0, sizeof(FDIOBuffer));
 722         FDIO.IOB = &IOB;
 723
 724         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 725                (filedir_entry != NULL))
 726         {
 727 #ifdef _DIRENT_HAVE_D_NAMLEN
 728                 d_namelen = filedir_entry->d_namelen;
 729
 730 #else
 731                 d_namelen = strlen(filedir_entry->d_name);
 732 #endif
 733
 734 #ifdef _DIRENT_HAVE_D_TYPE
 735                 d_type = filedir_entry->d_type;
 736 #else
 737                 d_type = DT_UNKNOWN;
 738 #endif
 739                 if (d_type == DT_DIR)
 740                         continue;
 741
 742                 if ((d_namelen > 1) && filedir_entry->d_name[d_namelen - 1] == '~')
 743                         continue; /* Ignore backup files... */
 744
 745                 if ((d_namelen == 1) &&
 746                     (filedir_entry->d_name[0] == '.'))
 747                         continue;
 748
 749                 if ((d_namelen == 2) &&
 750                     (filedir_entry->d_name[0] == '.') &&
 751                     (filedir_entry->d_name[1] == '.'))
 752                         continue;
 753
 754                 pch = strchr(filedir_entry->d_name, '@');
 755                 if (pch == NULL)
 756                         continue;
 757
 758                 snprintf(filename,
 759                          sizeof filename,
 760                          "%s/%s",
 761                          ctdl_netout_dir,
 762                          filedir_entry->d_name);
 763
 764                 StrBufPlain(NextHop,
 765                             filedir_entry->d_name,
 766                             pch - filedir_entry->d_name);
 767
 768                 snprintf(spooloutfilename,
 769                          sizeof spooloutfilename,
 770                          "%s/%s",
 771                          ctdl_netout_dir,
 772                          ChrPtr(NextHop));
 773
 774                 QN_syslog(LOG_DEBUG, "Consolidate %s to %s\n", filename, ChrPtr(NextHop));
 775                 if (CtdlNetworkTalkingTo(SKEY(NextHop), NTT_CHECK)) {
 776                         nFailed++;
 777                         QN_syslog(LOG_DEBUG,
 778                                   "Currently online with %s - skipping for now\n",
 779                                   ChrPtr(NextHop)
 780                                 );
 781                 }
 782                 else {
 783                         size_t dsize;
 784                         size_t fsize;
 785                         int infd, outfd;
 786                         const char *err = NULL;
 787                         CtdlNetworkTalkingTo(SKEY(NextHop), NTT_ADD);
 788
 789                         infd = open(filename, O_RDONLY);
 790                         if (infd == -1) {
 791                                 nFailed++;
 792                                 QN_syslog(LOG_ERR,
 793                                           "failed to open %s for reading due to %s; skipping.\n",
 794                                           filename, strerror(errno)
 795                                         );
 796                                 CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 797                                 continue;
 798                         }
 799
 800                         outfd = open(spooloutfilename,
 801                                   O_EXCL|O_CREAT|O_NONBLOCK|O_WRONLY,
 802                                   S_IRUSR|S_IWUSR);
 803                         if (outfd == -1)
 804                         {
 805                                 outfd = open(spooloutfilename,
 806                                              O_EXCL|O_NONBLOCK|O_WRONLY,
 807                                              S_IRUSR | S_IWUSR);
 808                         }
 809                         if (outfd == -1) {
 810                                 nFailed++;
 811                                 QN_syslog(LOG_ERR,
 812                                           "failed to open %s for reading due to %s; skipping.\n",
 813                                           spooloutfilename, strerror(errno)
 814                                         );
 815                                 close(infd);
 816                                 CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 817                                 continue;
 818                         }
 819
 820                         dsize = lseek(outfd, 0, SEEK_END);
 821                         lseek(outfd, -dsize, SEEK_SET);
 822
 823                         fstat(infd, &statbuf);
 824                         fsize = statbuf.st_size;
 825 /*
 826                         fsize = lseek(infd, 0, SEEK_END);
 827 */
 828                         IOB.fd = infd;
 829                         FDIOBufferInit(&FDIO, &IOB, outfd, fsize + dsize);
 830                         FDIO.ChunkSendRemain = fsize;
 831                         FDIO.TotalSentAlready = dsize;
 832                         err = NULL;
 833                         errno = 0;
 834                         do {} while ((FileMoveChunked(&FDIO, &err) > 0) && (err == NULL));
 835                         if (err == NULL) {
 836                                 unlink(filename);
 837                         }
 838                         else {
 839                                 nFailed++;
 840                                 QN_syslog(LOG_ERR,
 841                                           "failed to append to %s [%s]; rolling back..\n",
 842                                           spooloutfilename, strerror(errno)
 843                                         );
 844                                 /* whoops partial append?? truncate spooloutfilename again! */
 845                                 ftruncate(outfd, dsize);
 846                         }
 847                         FDIOBufferDelete(&FDIO);
 848                         close(infd);
 849                         close(outfd);
 850                         CtdlNetworkTalkingTo(SKEY(NextHop), NTT_REMOVE);
 851                 }
 852         }
 853         closedir(dp);
 854
 855         if (nFailed > 0) {
 856                 FreeStrBuf(&NextHop);
 857                 QN_syslog(LOG_INFO,
 858                           "skipping Spoolcleanup because of %d files unprocessed.\n",
 859                           nFailed
 860                         );
 861
 862                 return;
 863         }
 864
 865         /* Step 2: delete any files in the outbound queue that were for neighbors who no longer exist */
 866         dp = opendir(ctdl_netout_dir);
 867         if (dp == NULL) {
 868                 FreeStrBuf(&NextHop);
 869                 free(d);
 870                 return;
 871         }
 872
 873         while ((readdir_r(dp, d, &filedir_entry) == 0) &&
 874                (filedir_entry != NULL))
 875         {
 876 #ifdef _DIRENT_HAVE_D_NAMLEN
 877                 d_namelen = filedir_entry->d_namelen;
 878
 879 #else
 880                 d_namelen = strlen(filedir_entry->d_name);
 881 #endif
 882
 883 #ifdef _DIRENT_HAVE_D_TYPE
 884                 d_type = filedir_entry->d_type;
 885 #else
 886                 d_type = DT_UNKNOWN;
 887 #endif
 888                 if (d_type == DT_DIR)
 889                         continue;
 890
 891                 if ((d_namelen == 1) &&
 892                     (filedir_entry->d_name[0] == '.'))
 893                         continue;
 894
 895                 if ((d_namelen == 2) &&
 896                     (filedir_entry->d_name[0] == '.') &&
 897                     (filedir_entry->d_name[1] == '.'))
 898                         continue;
 899
 900                 pch = strchr(filedir_entry->d_name, '@');
 901                 if (pch == NULL) /* no @ in name? consolidated file. */
 902                         continue;
 903
 904                 StrBufPlain(NextHop,
 905                             filedir_entry->d_name,
 906                             pch - filedir_entry->d_name);
 907
 908                 snprintf(filename,
 909                         sizeof filename,
 910                         "%s/%s",
 911                         ctdl_netout_dir,
 912                         filedir_entry->d_name
 913                 );
 914
 915                 i = CtdlIsValidNode(&nexthop,
 916                                     NULL,
 917                                     NextHop,
 918                                     working_ignetcfg,
 919                                     the_netmap);
 920
 921                 if ( (i != 0) || (StrLength(nexthop) > 0) ) {
 922                         unlink(filename);
 923                 }
 924         }
 925         FreeStrBuf(&NextHop);
 926         free(d);
 927         closedir(dp);
 928 }
 929
 930
 931
 932
 933 /*
 934  * It's ok if these directories already exist.  Just fail silently.
 935  */
 936 void create_spool_dirs(void) {
 937         if ((mkdir(ctdl_spool_dir, 0700) != 0) && (errno != EEXIST))
 938                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_spool_dir, strerror(errno));
 939         if (chown(ctdl_spool_dir, CTDLUID, (-1)) != 0)
 940                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_spool_dir, strerror(errno));
 941         if ((mkdir(ctdl_netin_dir, 0700) != 0) && (errno != EEXIST))
 942                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_netin_dir, strerror(errno));
 943         if (chown(ctdl_netin_dir, CTDLUID, (-1)) != 0)
 944                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netin_dir, strerror(errno));
 945         if ((mkdir(ctdl_nettmp_dir, 0700) != 0) && (errno != EEXIST))
 946                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_nettmp_dir, strerror(errno));
 947         if (chown(ctdl_nettmp_dir, CTDLUID, (-1)) != 0)
 948                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_nettmp_dir, strerror(errno));
 949         if ((mkdir(ctdl_netout_dir, 0700) != 0) && (errno != EEXIST))
 950                 syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_netout_dir, strerror(errno));
 951         if (chown(ctdl_netout_dir, CTDLUID, (-1)) != 0)
 952                 syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netout_dir, strerror(errno));
 953 }
 954
 955 /*
 956  * Module entry point
 957  */
 958 CTDL_MODULE_INIT(network_spool)
 959 {
 960         if (!threading)
 961         {
 962                 CtdlREGISTERRoomCfgType(subpending,       ParseSubPendingLine,   0, 5, SerializeGeneric,  DeleteGenericCfgLine); /// todo: move this to mailinglist manager
 963                 CtdlREGISTERRoomCfgType(unsubpending,     ParseUnSubPendingLine, 0, 4, SerializeGeneric,  DeleteGenericCfgLine); /// todo: move this to mailinglist manager
 964                 CtdlREGISTERRoomCfgType(lastsent,         ParseLastSent,         1, 1, SerializeLastSent, DeleteLastSent);
 965                 CtdlREGISTERRoomCfgType(ignet_push_share, ParseGeneric,          0, 2, SerializeGeneric,  DeleteGenericCfgLine); // [remotenode|remoteroomname (optional)]// todo: move this to the ignet client
 966                 CtdlREGISTERRoomCfgType(listrecp,         ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
 967                 CtdlREGISTERRoomCfgType(digestrecp,       ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
 968                 CtdlREGISTERRoomCfgType(participate,      ParseGeneric,          0, 1, SerializeGeneric,  DeleteGenericCfgLine);
 969                 CtdlREGISTERRoomCfgType(roommailalias,    ParseRoomAlias,        0, 1, SerializeGeneric,  DeleteGenericCfgLine);
 970
 971                 create_spool_dirs();
 972 //////todo              CtdlRegisterCleanupHook(destroy_network_queue_room);
 973         }
 974         return "network_spool";
 975 }