2 * This module handles shared rooms, inter-Citadel mail, and outbound
3 * mailing list processing.
5 * Copyright (c) 2000-2010 by the citadel.org team
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 * ** NOTE ** A word on the S_NETCONFIGS semaphore:
22 * This is a fairly high-level type of critical section. It ensures that no
23 * two threads work on the netconfigs files at the same time. Since we do
24 * so many things inside these, here are the rules:
25 * 1. begin_critical_section(S_NETCONFIGS) *before* begin_ any others.
26 * 2. Do *not* perform any I/O with the client during these sections.
31 * Duration of time (in seconds) after which pending list subscribe/unsubscribe
32 * requests that have not been confirmed will be deleted.
34 #define EXP 259200 /* three days */
46 #include <sys/types.h>
48 #if TIME_WITH_SYS_TIME
49 # include <sys/time.h>
53 # include <sys/time.h>
61 # if HAVE_SYS_SYSCALL_H
62 # include <sys/syscall.h>
69 #include <libcitadel.h>
72 #include "citserver.h"
78 #include "internet_addressing.h"
79 #include "serv_network.h"
80 #include "clientsocket.h"
82 #include "citadel_dirs.h"
91 #include "ctdl_module.h"
95 /* Nonzero while we are doing network processing */
96 static int doing_queue = 0;
99 * When we do network processing, it's accomplished in two passes; one to
100 * gather a list of rooms and one to actually do them. It's ok that rplist
101 * is global; we have a mutex that keeps it safe.
103 struct RoomProcList *rplist = NULL;
106 * We build a map of network nodes during processing.
108 NetMap *the_netmap = NULL;
109 int netmap_changed = 0;
110 char *working_ignetcfg = NULL;
113 * Load or refresh the Citadel network (IGnet) configuration for this node.
115 void load_working_ignetcfg(void) {
119 cfg = CtdlGetSysConfig(IGNETCFG);
124 oldcfg = working_ignetcfg;
125 working_ignetcfg = cfg;
126 if (oldcfg != NULL) {
136 * Keep track of what messages to reject
138 FilterList *load_filter_list(void) {
139 char *serialized_list = NULL;
142 FilterList *newlist = NULL;
145 serialized_list = CtdlGetSysConfig(FILTERLIST);
146 if (serialized_list == NULL) return(NULL); /* if null, no entries */
148 /* Use the string tokenizer to grab one line at a time */
149 for (i=0; i<num_tokens(serialized_list, '\n'); ++i) {
150 extract_token(buf, serialized_list, i, '\n', sizeof buf);
151 nptr = (FilterList *) malloc(sizeof(FilterList));
152 extract_token(nptr->fl_user, buf, 0, '|', sizeof nptr->fl_user);
153 striplt(nptr->fl_user);
154 extract_token(nptr->fl_room, buf, 1, '|', sizeof nptr->fl_room);
155 striplt(nptr->fl_room);
156 extract_token(nptr->fl_node, buf, 2, '|', sizeof nptr->fl_node);
157 striplt(nptr->fl_node);
159 /* Cowardly refuse to add an any/any/any entry that would
160 * end up filtering every single message.
162 if (IsEmptyStr(nptr->fl_user) &&
163 IsEmptyStr(nptr->fl_room) &&
164 IsEmptyStr(nptr->fl_node)) {
168 nptr->next = newlist;
173 free(serialized_list);
178 void free_filter_list(FilterList *fl) {
179 if (fl == NULL) return;
180 free_filter_list(fl->next);
187 * Check the use table. This is a list of messages which have recently
188 * arrived on the system. It is maintained and queried to prevent the same
189 * message from being entered into the database multiple times if it happens
190 * to arrive multiple times by accident.
192 int network_usetable(struct CtdlMessage *msg) {
195 struct cdbdata *cdbut;
198 /* Bail out if we can't generate a message ID */
202 if (msg->cm_fields['I'] == NULL) {
205 if (IsEmptyStr(msg->cm_fields['I'])) {
209 /* Generate the message ID */
210 strcpy(msgid, msg->cm_fields['I']);
211 if (haschar(msgid, '@') == 0) {
213 if (msg->cm_fields['N'] != NULL) {
214 strcat(msgid, msg->cm_fields['N']);
221 cdbut = cdb_fetch(CDB_USETABLE, msgid, strlen(msgid));
224 CtdlLogPrintf(CTDL_DEBUG, "network_usetable() : we already have %s\n", msgid);
228 /* If we got to this point, it's unique: add it. */
229 strcpy(ut.ut_msgid, msgid);
230 ut.ut_timestamp = time(NULL);
231 cdb_store(CDB_USETABLE, msgid, strlen(msgid), &ut, sizeof(struct UseTable) );
237 * Read the network map from its configuration file into memory.
239 void read_network_map(void) {
240 char *serialized_map = NULL;
245 serialized_map = CtdlGetSysConfig(IGNETMAP);
246 if (serialized_map == NULL) return; /* if null, no entries */
248 /* Use the string tokenizer to grab one line at a time */
249 for (i=0; i<num_tokens(serialized_map, '\n'); ++i) {
250 extract_token(buf, serialized_map, i, '\n', sizeof buf);
251 nmptr = (NetMap *) malloc(sizeof(NetMap));
252 extract_token(nmptr->nodename, buf, 0, '|', sizeof nmptr->nodename);
253 nmptr->lastcontact = extract_long(buf, 1);
254 extract_token(nmptr->nexthop, buf, 2, '|', sizeof nmptr->nexthop);
255 nmptr->next = the_netmap;
259 free(serialized_map);
265 * Write the network map from memory back to the configuration file.
267 void write_network_map(void) {
268 char *serialized_map = NULL;
272 if (netmap_changed) {
273 serialized_map = strdup("");
275 if (the_netmap != NULL) {
276 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
277 serialized_map = realloc(serialized_map,
278 (strlen(serialized_map)+SIZ) );
279 if (!IsEmptyStr(nmptr->nodename)) {
280 snprintf(&serialized_map[strlen(serialized_map)],
284 (long)nmptr->lastcontact,
290 CtdlPutSysConfig(IGNETMAP, serialized_map);
291 free(serialized_map);
294 /* Now free the list */
295 while (the_netmap != NULL) {
296 nmptr = the_netmap->next;
306 * Check the network map and determine whether the supplied node name is
307 * valid. If it is not a neighbor node, supply the name of a neighbor node
308 * which is the next hop. If it *is* a neighbor node, we also fill in the
311 int is_valid_node(char *nexthop, char *secret, char *node) {
323 * First try the neighbor nodes
325 if (working_ignetcfg == NULL) {
326 CtdlLogPrintf(CTDL_ERR, "working_ignetcfg is NULL!\n");
327 if (nexthop != NULL) {
334 if (nexthop != NULL) {
338 /* Use the string tokenizer to grab one line at a time */
339 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
340 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
341 extract_token(buf, linebuf, 0, '|', sizeof buf);
342 if (!strcasecmp(buf, node)) {
343 if (nexthop != NULL) {
346 if (secret != NULL) {
347 extract_token(secret, linebuf, 1, '|', 256);
354 return(retval); /* yup, it's a direct neighbor */
358 * If we get to this point we have to see if we know the next hop
360 if (the_netmap != NULL) {
361 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
362 if (!strcasecmp(nmptr->nodename, node)) {
363 if (nexthop != NULL) {
364 strcpy(nexthop, nmptr->nexthop);
372 * If we get to this point, the supplied node name is bogus.
374 CtdlLogPrintf(CTDL_ERR, "Invalid node name <%s>\n", node);
382 void cmd_gnet(char *argbuf) {
383 char filename[PATH_MAX];
387 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
388 /* users can edit the netconfigs for their own mailbox rooms */
390 else if (CtdlAccessCheck(ac_room_aide)) return;
392 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
393 cprintf("%d Network settings for room #%ld <%s>\n",
395 CC->room.QRnumber, CC->room.QRname);
397 fp = fopen(filename, "r");
399 while (fgets(buf, sizeof buf, fp) != NULL) {
400 buf[strlen(buf)-1] = 0;
401 cprintf("%s\n", buf);
410 void cmd_snet(char *argbuf) {
411 char tempfilename[PATH_MAX];
412 char filename[PATH_MAX];
421 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
422 /* users can edit the netconfigs for their own mailbox rooms */
424 else if (CtdlAccessCheck(ac_room_aide)) return;
426 len = assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
427 memcpy(tempfilename, filename, len + 1);
429 memset(&StatBuf, 0, sizeof(struct stat));
430 if ((stat(filename, &StatBuf) == -1) || (StatBuf.st_size == 0))
431 StatBuf.st_size = 80; /* Not there or empty? guess 80 chars line. */
433 sprintf(tempfilename + len, ".%d", CC->cs_pid);
435 TmpFD = open(tempfilename, O_CREAT|O_EXCL|O_RDWR, S_IRUSR|S_IWUSR);
437 if ((TmpFD > 0) && (errno == 0))
439 char *tmp = malloc(StatBuf.st_size * 2);
440 memset(tmp, ' ', StatBuf.st_size * 2);
441 rc = write(TmpFD, tmp, StatBuf.st_size * 2);
443 if ((rc <= 0) || (rc != StatBuf.st_size * 2))
446 cprintf("%d Unable to allocate the space required for %s: %s\n",
447 ERROR + INTERNAL_ERROR,
450 unlink(tempfilename);
453 lseek(TmpFD, SEEK_SET, 0);
456 cprintf("%d Unable to allocate the space required for %s: %s\n",
457 ERROR + INTERNAL_ERROR,
460 unlink(tempfilename);
465 cprintf("%d %s\n", SEND_LISTING, tempfilename);
468 while (rc = CtdlClientGetLine(Line),
471 if ((rc == 3) && (strcmp(ChrPtr(Line), "000") == 0))
473 StrBufAppendBufPlain(Line, HKEY("\n"), 0);
474 write(TmpFD, ChrPtr(Line), StrLength(Line));
475 len += StrLength(Line);
478 ftruncate(TmpFD, len);
481 /* Now copy the temp file to its permanent location.
482 * (We copy instead of link because they may be on different filesystems)
484 begin_critical_section(S_NETCONFIGS);
485 rename(tempfilename, filename);
486 end_critical_section(S_NETCONFIGS);
491 * Deliver digest messages
493 void network_deliver_digest(SpoolControl *sc) {
496 struct CtdlMessage *msg = NULL;
499 size_t recps_len = SIZ;
501 struct recptypes *valid;
505 if (sc->num_msgs_spooled < 1) {
506 fclose(sc->digestfp);
511 msg = malloc(sizeof(struct CtdlMessage));
512 memset(msg, 0, sizeof(struct CtdlMessage));
513 msg->cm_magic = CTDLMESSAGE_MAGIC;
514 msg->cm_format_type = FMT_RFC822;
515 msg->cm_anon_type = MES_NORMAL;
517 sprintf(buf, "%ld", time(NULL));
518 msg->cm_fields['T'] = strdup(buf);
519 msg->cm_fields['A'] = strdup(CC->room.QRname);
520 snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
521 msg->cm_fields['U'] = strdup(buf);
522 sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
523 for (i=0; buf[i]; ++i) {
524 if (isspace(buf[i])) buf[i]='_';
525 buf[i] = tolower(buf[i]);
527 msg->cm_fields['F'] = strdup(buf);
528 msg->cm_fields['R'] = strdup(buf);
530 /* Set the 'List-ID' header */
531 msg->cm_fields['L'] = malloc(1024);
532 snprintf(msg->cm_fields['L'], 1024,
533 "%s <%ld.list-id.%s>",
540 * Go fetch the contents of the digest
542 fseek(sc->digestfp, 0L, SEEK_END);
543 msglen = ftell(sc->digestfp);
545 msg->cm_fields['M'] = malloc(msglen + 1);
546 fseek(sc->digestfp, 0L, SEEK_SET);
547 siz = fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
548 msg->cm_fields['M'][msglen] = '\0';
550 fclose(sc->digestfp);
553 /* Now generate the delivery instructions */
556 * Figure out how big a buffer we need to allocate
558 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
559 recps_len = recps_len + strlen(nptr->name) + 2;
562 recps = malloc(recps_len);
565 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
572 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
573 if (nptr != sc->digestrecps) {
576 strcat(recps, nptr->name);
579 /* Where do we want bounces and other noise to be heard? Surely not the list members! */
580 snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
582 /* Now submit the message */
583 valid = validate_recipients(recps, NULL, 0);
586 valid->bounce_to = strdup(bounce_to);
587 valid->envelope_from = strdup(bounce_to);
588 CtdlSubmitMsg(msg, valid, NULL, 0);
590 CtdlFreeMessage(msg);
591 free_recipients(valid);
596 * Deliver list messages to everyone on the list ... efficiently
598 void network_deliver_list(struct CtdlMessage *msg, SpoolControl *sc) {
600 size_t recps_len = SIZ;
601 struct recptypes *valid;
605 /* Don't do this if there were no recipients! */
606 if (sc->listrecps == NULL) return;
608 /* Now generate the delivery instructions */
611 * Figure out how big a buffer we need to allocate
613 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
614 recps_len = recps_len + strlen(nptr->name) + 2;
617 recps = malloc(recps_len);
620 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
627 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
628 if (nptr != sc->listrecps) {
631 strcat(recps, nptr->name);
634 /* Where do we want bounces and other noise to be heard? Surely not the list members! */
635 snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
637 /* Now submit the message */
638 valid = validate_recipients(recps, NULL, 0);
641 valid->bounce_to = strdup(bounce_to);
642 valid->envelope_from = strdup(bounce_to);
643 CtdlSubmitMsg(msg, valid, NULL, 0);
644 free_recipients(valid);
646 /* Do not call CtdlFreeMessage(msg) here; the caller will free it. */
653 * Spools out one message from the list.
655 void network_spool_msg(long msgnum, void *userdata) {
658 char *newpath = NULL;
659 size_t instr_len = SIZ;
660 struct CtdlMessage *msg = NULL;
663 struct ser_ret sermsg;
665 char filename[PATH_MAX];
669 int delete_after_send = 0; /* Set to 1 to delete after spooling */
670 int ok_to_participate = 0;
671 struct recptypes *valid;
673 sc = (SpoolControl *)userdata;
676 * Process mailing list recipients
679 if (sc->listrecps != NULL) {
680 /* Fetch the message. We're going to need to modify it
681 * in order to insert the [list name] in it, etc.
683 msg = CtdlFetchMessage(msgnum, 1);
688 if (msg->cm_fields['V'] == NULL){
689 /* local message, no enVelope */
692 StrBufAppendBufPlain(Buf, msg->cm_fields['O'], -1, 0);
693 StrBufAppendBufPlain(Buf, HKEY("@"), 0);
694 StrBufAppendBufPlain(Buf, config.c_fqdn, -1, 0);
696 msg->cm_fields['K'] = SmashStrBuf(&Buf);
699 msg->cm_fields['K'] = strdup (msg->cm_fields['V']);
701 /* Set the 'List-ID' header */
702 if (msg->cm_fields['L'] != NULL) {
703 free(msg->cm_fields['L']);
705 msg->cm_fields['L'] = malloc(1024);
706 snprintf(msg->cm_fields['L'], 1024,
707 "%s <%ld.list-id.%s>",
713 /* Prepend "[List name]" to the subject */
714 if (msg->cm_fields['U'] == NULL) {
715 msg->cm_fields['U'] = strdup("(no subject)");
718 len = strlen(msg->cm_fields['U']);
719 pCh = strstr(msg->cm_fields['U'], CC->room.QRname);
721 (*(pCh + len) != ']') ||
722 (pCh == msg->cm_fields['U']) ||
728 rlen = strlen(CC->room.QRname);
730 pBuff = malloc (rlen * sizeof(char));
732 snprintf(pBuff, rlen, "[%s] %s", CC->room.QRname, msg->cm_fields['U']);
733 free(msg->cm_fields['U']);
734 msg->cm_fields['U'] = pBuff;
736 /* else we won't modify the buffer, since the roomname is already here. */
738 /* Set the recipient of the list message to the
739 * email address of the room itself.
740 * FIXME ... I want to be able to pick any address
742 if (msg->cm_fields['R'] != NULL) {
743 free(msg->cm_fields['R']);
745 msg->cm_fields['R'] = malloc(256);
746 snprintf(msg->cm_fields['R'], 256,
747 "room_%s@%s", CC->room.QRname,
749 for (i=0; msg->cm_fields['R'][i]; ++i) {
750 if (isspace(msg->cm_fields['R'][i])) {
751 msg->cm_fields['R'][i] = '_';
755 /* Handle delivery */
756 network_deliver_list(msg, sc);
757 CtdlFreeMessage(msg);
762 * Process digest recipients
764 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
765 msg = CtdlFetchMessage(msgnum, 1);
767 fprintf(sc->digestfp, " -----------------------------------"
768 "------------------------------------"
770 fprintf(sc->digestfp, "From: ");
771 if (msg->cm_fields['A'] != NULL) {
772 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
774 if (msg->cm_fields['F'] != NULL) {
775 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
777 else if (msg->cm_fields['N'] != NULL) {
778 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
780 fprintf(sc->digestfp, "\n");
781 if (msg->cm_fields['U'] != NULL) {
782 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
785 CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
787 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
788 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0, 0);
790 StrBufTrim(CC->redirect_buffer);
791 fwrite(HKEY("\n"), 1, sc->digestfp);
792 fwrite(SKEY(CC->redirect_buffer), 1, sc->digestfp);
793 fwrite(HKEY("\n"), 1, sc->digestfp);
795 FreeStrBuf(&CC->redirect_buffer);
797 sc->num_msgs_spooled += 1;
803 * Process client-side list participations for this room
806 if (sc->participates != NULL) {
807 msg = CtdlFetchMessage(msgnum, 1);
810 /* Only send messages which originated on our own Citadel
811 * network, otherwise we'll end up sending the remote
812 * mailing list's messages back to it, which is rude...
814 ok_to_participate = 0;
815 if (msg->cm_fields['N'] != NULL) {
816 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
817 ok_to_participate = 1;
819 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
820 ok_to_participate = 1;
823 if (ok_to_participate) {
824 if (msg->cm_fields['F'] != NULL) {
825 free(msg->cm_fields['F']);
827 msg->cm_fields['F'] = malloc(SIZ);
828 /* Replace the Internet email address of the actual
829 * author with the email address of the room itself,
830 * so the remote listserv doesn't reject us.
831 * FIXME ... I want to be able to pick any address
833 snprintf(msg->cm_fields['F'], SIZ,
834 "room_%s@%s", CC->room.QRname,
836 for (i=0; msg->cm_fields['F'][i]; ++i) {
837 if (isspace(msg->cm_fields['F'][i])) {
838 msg->cm_fields['F'][i] = '_';
843 * Figure out how big a buffer we need to allocate
845 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
847 if (msg->cm_fields['R'] == NULL) {
848 free(msg->cm_fields['R']);
850 msg->cm_fields['R'] = strdup(nptr->name);
852 valid = validate_recipients(nptr->name, NULL, 0);
853 CtdlSubmitMsg(msg, valid, "", 0);
854 free_recipients(valid);
858 CtdlFreeMessage(msg);
863 * Process IGnet push shares
865 msg = CtdlFetchMessage(msgnum, 1);
869 /* Prepend our node name to the Path field whenever
870 * sending a message to another IGnet node
872 if (msg->cm_fields['P'] == NULL) {
873 msg->cm_fields['P'] = strdup("username");
875 newpath_len = strlen(msg->cm_fields['P']) +
876 strlen(config.c_nodename) + 2;
877 newpath = malloc(newpath_len);
878 snprintf(newpath, newpath_len, "%s!%s",
879 config.c_nodename, msg->cm_fields['P']);
880 free(msg->cm_fields['P']);
881 msg->cm_fields['P'] = newpath;
884 * Determine if this message is set to be deleted
885 * after sending out on the network
887 if (msg->cm_fields['S'] != NULL) {
888 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
889 delete_after_send = 1;
893 /* Now send it to every node */
894 if (sc->ignet_push_shares != NULL)
895 for (mptr = sc->ignet_push_shares; mptr != NULL;
900 /* Check for valid node name */
901 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
902 CtdlLogPrintf(CTDL_ERR, "Invalid node <%s>\n", mptr->remote_nodename);
906 /* Check for split horizon */
907 CtdlLogPrintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
908 bang = num_tokens(msg->cm_fields['P'], '!');
909 if (bang > 1) for (i=0; i<(bang-1); ++i) {
910 extract_token(buf, msg->cm_fields['P'], i, '!', sizeof buf);
911 CtdlLogPrintf(CTDL_DEBUG, "Compare <%s> to <%s>\n",
912 buf, mptr->remote_nodename) ;
913 if (!strcasecmp(buf, mptr->remote_nodename)) {
915 CtdlLogPrintf(CTDL_DEBUG, "Not sending to %s\n",
916 mptr->remote_nodename);
919 CtdlLogPrintf(CTDL_DEBUG, "Sending to %s\n", mptr->remote_nodename);
923 /* Send the message */
927 * Force the message to appear in the correct room
928 * on the far end by setting the C field correctly
930 if (msg->cm_fields['C'] != NULL) {
931 free(msg->cm_fields['C']);
933 if (!IsEmptyStr(mptr->remote_roomname)) {
934 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
937 msg->cm_fields['C'] = strdup(CC->room.QRname);
940 /* serialize it for transmission */
941 serialize_message(&sermsg, msg);
942 if (sermsg.len > 0) {
944 /* write it to a spool file */
945 snprintf(filename, sizeof filename,"%s/%s@%lx%x",
947 mptr->remote_nodename,
951 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
952 fp = fopen(filename, "ab");
959 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
962 /* free the serialized version */
968 CtdlFreeMessage(msg);
971 /* update lastsent */
972 sc->lastsent = msgnum;
974 /* Delete this message if delete-after-send is set */
975 if (delete_after_send) {
976 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
982 int read_spoolcontrol_file(SpoolControl **scc, char *filename)
988 char roomname[ROOMNAMELEN];
991 int skipthisline = 0;
992 namelist *nptr = NULL;
993 maplist *mptr = NULL;
996 fp = fopen(filename, "r");
1000 sc = malloc(sizeof(SpoolControl));
1001 memset(sc, 0, sizeof(SpoolControl));
1004 while (fgets(buf, sizeof buf, fp) != NULL) {
1005 buf[strlen(buf)-1] = 0;
1007 extract_token(instr, buf, 0, '|', sizeof instr);
1008 if (!strcasecmp(instr, strof(lastsent))) {
1009 sc->lastsent = extract_long(buf, 1);
1011 else if (!strcasecmp(instr, strof(listrecp))) {
1013 malloc(sizeof(namelist));
1014 nptr->next = sc->listrecps;
1015 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
1016 sc->listrecps = nptr;
1018 else if (!strcasecmp(instr, strof(participate))) {
1020 malloc(sizeof(namelist));
1021 nptr->next = sc->participates;
1022 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
1023 sc->participates = nptr;
1025 else if (!strcasecmp(instr, strof(digestrecp))) {
1027 malloc(sizeof(namelist));
1028 nptr->next = sc->digestrecps;
1029 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
1030 sc->digestrecps = nptr;
1032 else if (!strcasecmp(instr, strof(ignet_push_share))) {
1033 extract_token(nodename, buf, 1, '|', sizeof nodename);
1034 extract_token(roomname, buf, 2, '|', sizeof roomname);
1035 mptr = (maplist *) malloc(sizeof(maplist));
1036 mptr->next = sc->ignet_push_shares;
1037 strcpy(mptr->remote_nodename, nodename);
1038 strcpy(mptr->remote_roomname, roomname);
1039 sc->ignet_push_shares = mptr;
1042 /* Preserve 'other' lines ... *unless* they happen to
1043 * be subscribe/unsubscribe pendings with expired
1047 if (!strncasecmp(buf, strof(subpending)"|", 11)) {
1048 if (time(NULL) - extract_long(buf, 4) > EXP) {
1052 if (!strncasecmp(buf, strof(unsubpending)"|", 13)) {
1053 if (time(NULL) - extract_long(buf, 3) > EXP) {
1058 if (skipthisline == 0) {
1059 linesize = strlen(buf);
1060 sc->misc = realloc(sc->misc,
1061 (miscsize + linesize + 2) );
1062 sprintf(&sc->misc[miscsize], "%s\n", buf);
1063 miscsize = miscsize + linesize + 1;
1073 void free_spoolcontrol_struct(SpoolControl **scc)
1076 namelist *nptr = NULL;
1077 maplist *mptr = NULL;
1080 while (sc->listrecps != NULL) {
1081 nptr = sc->listrecps->next;
1082 free(sc->listrecps);
1083 sc->listrecps = nptr;
1085 /* Do the same for digestrecps */
1086 while (sc->digestrecps != NULL) {
1087 nptr = sc->digestrecps->next;
1088 free(sc->digestrecps);
1089 sc->digestrecps = nptr;
1091 /* Do the same for participates */
1092 while (sc->participates != NULL) {
1093 nptr = sc->participates->next;
1094 free(sc->participates);
1095 sc->participates = nptr;
1097 while (sc->ignet_push_shares != NULL) {
1098 mptr = sc->ignet_push_shares->next;
1099 free(sc->ignet_push_shares);
1100 sc->ignet_push_shares = mptr;
1107 int writenfree_spoolcontrol_file(SpoolControl **scc, char *filename)
1109 char tempfilename[PATH_MAX];
1112 namelist *nptr = NULL;
1113 maplist *mptr = NULL;
1117 long reltid; /* if we don't have SYS_gettid, use "random" value */
1121 len = strlen(filename);
1122 memcpy(tempfilename, filename, len + 1);
1125 #if defined(HAVE_SYSCALL_H) && defined (SYS_gettid)
1126 reltid = syscall(SYS_gettid);
1128 gettimeofday(&tv, NULL);
1129 /* Promote to time_t; types differ on some OSes (like darwin) */
1130 unixtime = tv.tv_sec;
1132 sprintf(tempfilename + len, ".%ld-%ld", reltid, unixtime);
1135 TmpFD = open(tempfilename, O_CREAT|O_EXCL|O_RDWR, S_IRUSR|S_IWUSR);
1137 if ((TmpFD < 0) || (errno != 0)) {
1138 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
1139 filename, strerror(errno));
1140 free_spoolcontrol_struct(scc);
1141 unlink(tempfilename);
1144 StrBufAppendPrintf(Cfg, "lastsent|%ld\n", sc->lastsent);
1146 /* Write out the listrecps while freeing from memory at the
1147 * same time. Am I clever or what? :)
1149 while (sc->listrecps != NULL) {
1150 StrBufAppendPrintf(Cfg, "listrecp|%s\n", sc->listrecps->name);
1151 nptr = sc->listrecps->next;
1152 free(sc->listrecps);
1153 sc->listrecps = nptr;
1155 /* Do the same for digestrecps */
1156 while (sc->digestrecps != NULL) {
1157 StrBufAppendPrintf(Cfg, "digestrecp|%s\n", sc->digestrecps->name);
1158 nptr = sc->digestrecps->next;
1159 free(sc->digestrecps);
1160 sc->digestrecps = nptr;
1162 /* Do the same for participates */
1163 while (sc->participates != NULL) {
1164 StrBufAppendPrintf(Cfg, "participate|%s\n", sc->participates->name);
1165 nptr = sc->participates->next;
1166 free(sc->participates);
1167 sc->participates = nptr;
1169 while (sc->ignet_push_shares != NULL) {
1170 StrBufAppendPrintf(Cfg, "ignet_push_share|%s", sc->ignet_push_shares->remote_nodename);
1171 if (!IsEmptyStr(sc->ignet_push_shares->remote_roomname)) {
1172 StrBufAppendPrintf(Cfg, "|%s", sc->ignet_push_shares->remote_roomname);
1174 StrBufAppendPrintf(Cfg, "\n");
1175 mptr = sc->ignet_push_shares->next;
1176 free(sc->ignet_push_shares);
1177 sc->ignet_push_shares = mptr;
1179 if (sc->misc != NULL) {
1180 StrBufAppendBufPlain(Cfg, sc->misc, -1, 0);
1184 rc = write(TmpFD, ChrPtr(Cfg), StrLength(Cfg));
1185 if ((rc >=0 ) && (rc == StrLength(Cfg)))
1188 rename(tempfilename, filename);
1191 CtdlLogPrintf(CTDL_EMERG,
1192 "unable to write %s; [%s]; not enough space on the disk?\n",
1196 unlink(tempfilename);
1204 int is_recipient(SpoolControl *sc, const char *Name)
1210 nptr = sc->listrecps;
1211 while (nptr != NULL) {
1212 if (strncmp(Name, nptr->name, len)==0)
1216 /* Do the same for digestrecps */
1217 nptr = sc->digestrecps;
1218 while (nptr != NULL) {
1219 if (strncmp(Name, nptr->name, len)==0)
1223 /* Do the same for participates */
1224 nptr = sc->participates;
1225 while (nptr != NULL) {
1226 if (strncmp(Name, nptr->name, len)==0)
1235 * Batch up and send all outbound traffic from the current room
1237 void network_spoolout_room(char *room_to_spool) {
1239 char filename[PATH_MAX];
1244 * If the room doesn't exist, don't try to perform its networking tasks.
1245 * Normally this should never happen, but once in a while maybe a room gets
1246 * queued for networking and then deleted before it can happen.
1248 if (CtdlGetRoom(&CC->room, room_to_spool) != 0) {
1249 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
1253 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1254 begin_critical_section(S_NETCONFIGS);
1256 /* Only do net processing for rooms that have netconfigs */
1257 if (!read_spoolcontrol_file(&sc, filename))
1259 end_critical_section(S_NETCONFIGS);
1262 CtdlLogPrintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
1264 /* If there are digest recipients, we have to build a digest */
1265 if (sc->digestrecps != NULL) {
1266 sc->digestfp = tmpfile();
1267 fprintf(sc->digestfp, "Content-type: text/plain\n\n");
1270 /* Do something useful */
1271 CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
1272 network_spool_msg, sc);
1274 /* If we wrote a digest, deliver it and then close it */
1275 snprintf(buf, sizeof buf, "room_%s@%s",
1276 CC->room.QRname, config.c_fqdn);
1277 for (i=0; buf[i]; ++i) {
1278 buf[i] = tolower(buf[i]);
1279 if (isspace(buf[i])) buf[i] = '_';
1281 if (sc->digestfp != NULL) {
1282 fprintf(sc->digestfp, " -----------------------------------"
1283 "------------------------------------"
1285 "You are subscribed to the '%s' "
1287 "To post to the list: %s\n",
1288 CC->room.QRname, buf
1290 network_deliver_digest(sc); /* deliver and close */
1293 /* Now rewrite the config file */
1294 writenfree_spoolcontrol_file (&sc, filename);
1295 end_critical_section(S_NETCONFIGS);
1301 * Send the *entire* contents of the current room to one specific network node,
1302 * ignoring anything we know about which messages have already undergone
1303 * network processing. This can be used to bring a new node into sync.
1305 int network_sync_to(char *target_node) {
1307 int num_spooled = 0;
1313 char filename[PATH_MAX];
1316 /* Grab the configuration line we're looking for */
1317 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1318 begin_critical_section(S_NETCONFIGS);
1319 fp = fopen(filename, "r");
1321 end_critical_section(S_NETCONFIGS);
1324 while (fgets(buf, sizeof buf, fp) != NULL) {
1325 buf[strlen(buf)-1] = 0;
1326 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1327 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1328 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1329 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1330 && (!strcasecmp(sc_node, target_node)) ) {
1333 /* Concise syntax because we don't need a full linked-list */
1334 memset(&sc, 0, sizeof(SpoolControl));
1335 sc.ignet_push_shares = (maplist *)
1336 malloc(sizeof(maplist));
1337 sc.ignet_push_shares->next = NULL;
1338 safestrncpy(sc.ignet_push_shares->remote_nodename,
1340 sizeof sc.ignet_push_shares->remote_nodename);
1341 safestrncpy(sc.ignet_push_shares->remote_roomname,
1343 sizeof sc.ignet_push_shares->remote_roomname);
1347 end_critical_section(S_NETCONFIGS);
1349 if (!found_node) return(-1);
1351 /* Send ALL messages */
1352 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
1353 network_spool_msg, &sc);
1355 /* Concise cleanup because we know there's only one node in the sc */
1356 free(sc.ignet_push_shares);
1358 CtdlLogPrintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1359 num_spooled, target_node);
1360 return(num_spooled);
1365 * Implements the NSYN command
1367 void cmd_nsyn(char *argbuf) {
1369 char target_node[256];
1371 if (CtdlAccessCheck(ac_aide)) return;
1373 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1374 num_spooled = network_sync_to(target_node);
1375 if (num_spooled >= 0) {
1376 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1379 cprintf("%d No such room/node share exists.\n",
1380 ERROR + ROOM_NOT_FOUND);
1387 * Batch up and send all outbound traffic from the current room
1389 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1390 struct RoomProcList *ptr;
1392 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1393 if (ptr == NULL) return;
1395 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1396 begin_critical_section(S_RPLIST);
1399 end_critical_section(S_RPLIST);
1402 void destroy_network_queue_room(void)
1404 struct RoomProcList *cur, *p;
1405 NetMap *nmcur, *nmp;
1408 begin_critical_section(S_RPLIST);
1416 end_critical_section(S_RPLIST);
1419 while (nmcur != NULL)
1426 if (working_ignetcfg != NULL)
1427 free (working_ignetcfg);
1428 working_ignetcfg = NULL;
1433 * Learn topology from path fields
1435 void network_learn_topology(char *node, char *path) {
1439 strcpy(nexthop, "");
1441 if (num_tokens(path, '!') < 3) return;
1442 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1443 if (!strcasecmp(nmptr->nodename, node)) {
1444 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1445 nmptr->lastcontact = time(NULL);
1451 /* If we got here then it's not in the map, so add it. */
1452 nmptr = (NetMap *) malloc(sizeof (NetMap));
1453 strcpy(nmptr->nodename, node);
1454 nmptr->lastcontact = time(NULL);
1455 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1456 nmptr->next = the_netmap;
1465 * Bounce a message back to the sender
1467 void network_bounce(struct CtdlMessage *msg, char *reason) {
1468 char *oldpath = NULL;
1470 char bouncesource[SIZ];
1471 char recipient[SIZ];
1472 struct recptypes *valid = NULL;
1473 char force_room[ROOMNAMELEN];
1474 static int serialnum = 0;
1477 CtdlLogPrintf(CTDL_DEBUG, "entering network_bounce()\n");
1479 if (msg == NULL) return;
1481 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1484 * Give it a fresh message ID
1486 if (msg->cm_fields['I'] != NULL) {
1487 free(msg->cm_fields['I']);
1489 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1490 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1491 msg->cm_fields['I'] = strdup(buf);
1494 * FIXME ... right now we're just sending a bounce; we really want to
1495 * include the text of the bounced message.
1497 if (msg->cm_fields['M'] != NULL) {
1498 free(msg->cm_fields['M']);
1500 msg->cm_fields['M'] = strdup(reason);
1501 msg->cm_format_type = 0;
1504 * Turn the message around
1506 if (msg->cm_fields['R'] == NULL) {
1507 free(msg->cm_fields['R']);
1510 if (msg->cm_fields['D'] == NULL) {
1511 free(msg->cm_fields['D']);
1514 snprintf(recipient, sizeof recipient, "%s@%s",
1515 msg->cm_fields['A'], msg->cm_fields['N']);
1517 if (msg->cm_fields['A'] == NULL) {
1518 free(msg->cm_fields['A']);
1521 if (msg->cm_fields['N'] == NULL) {
1522 free(msg->cm_fields['N']);
1525 if (msg->cm_fields['U'] == NULL) {
1526 free(msg->cm_fields['U']);
1529 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1530 msg->cm_fields['N'] = strdup(config.c_nodename);
1531 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1533 /* prepend our node to the path */
1534 if (msg->cm_fields['P'] != NULL) {
1535 oldpath = msg->cm_fields['P'];
1536 msg->cm_fields['P'] = NULL;
1539 oldpath = strdup("unknown_user");
1541 size = strlen(oldpath) + SIZ;
1542 msg->cm_fields['P'] = malloc(size);
1543 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1546 /* Now submit the message */
1547 valid = validate_recipients(recipient, NULL, 0);
1548 if (valid != NULL) if (valid->num_error != 0) {
1549 free_recipients(valid);
1552 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1553 strcpy(force_room, config.c_aideroom);
1556 strcpy(force_room, "");
1558 if ( (valid == NULL) && IsEmptyStr(force_room) ) {
1559 strcpy(force_room, config.c_aideroom);
1561 CtdlSubmitMsg(msg, valid, force_room, 0);
1564 if (valid != NULL) free_recipients(valid);
1565 CtdlFreeMessage(msg);
1566 CtdlLogPrintf(CTDL_DEBUG, "leaving network_bounce()\n");
1573 * Process a buffer containing a single message from a single file
1574 * from the inbound queue
1576 void network_process_buffer(char *buffer, long size) {
1577 struct CtdlMessage *msg = NULL;
1580 struct recptypes *recp = NULL;
1581 char target_room[ROOMNAMELEN];
1582 struct ser_ret sermsg;
1583 char *oldpath = NULL;
1584 char filename[PATH_MAX];
1587 unsigned char firstbyte;
1588 unsigned char lastbyte;
1590 CtdlLogPrintf(CTDL_DEBUG, "network_process_buffer() processing %ld bytes\n", size);
1592 /* Validate just a little bit. First byte should be FF and * last byte should be 00. */
1593 firstbyte = buffer[0];
1594 lastbyte = buffer[size-1];
1595 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1596 CtdlLogPrintf(CTDL_ERR, "Corrupt message ignored. Length=%ld, firstbyte = %d, lastbyte = %d\n",
1597 size, firstbyte, lastbyte);
1601 /* Set default target room to trash */
1602 strcpy(target_room, TWITROOM);
1604 /* Load the message into memory */
1605 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1606 memset(msg, 0, sizeof(struct CtdlMessage));
1607 msg->cm_magic = CTDLMESSAGE_MAGIC;
1608 msg->cm_anon_type = buffer[1];
1609 msg->cm_format_type = buffer[2];
1611 for (pos = 3; pos < size; ++pos) {
1612 field = buffer[pos];
1613 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1614 pos = pos + strlen(&buffer[(int)pos]);
1617 /* Check for message routing */
1618 if (msg->cm_fields['D'] != NULL) {
1619 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1621 /* route the message */
1622 strcpy(nexthop, "");
1623 if (is_valid_node(nexthop, NULL, msg->cm_fields['D']) == 0) {
1624 /* prepend our node to the path */
1625 if (msg->cm_fields['P'] != NULL) {
1626 oldpath = msg->cm_fields['P'];
1627 msg->cm_fields['P'] = NULL;
1630 oldpath = strdup("unknown_user");
1632 size = strlen(oldpath) + SIZ;
1633 msg->cm_fields['P'] = malloc(size);
1634 snprintf(msg->cm_fields['P'], size, "%s!%s",
1635 config.c_nodename, oldpath);
1638 /* serialize the message */
1639 serialize_message(&sermsg, msg);
1642 if (IsEmptyStr(nexthop)) {
1643 strcpy(nexthop, msg->cm_fields['D']);
1653 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
1654 fp = fopen(filename, "ab");
1656 fwrite(sermsg.ser, sermsg.len, 1, fp);
1660 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1663 CtdlFreeMessage(msg);
1667 else { /* invalid destination node name */
1670 "A message you sent could not be delivered due to an invalid destination node"
1671 " name. Please check the address and try sending the message again.\n");
1680 * Check to see if we already have a copy of this message, and
1681 * abort its processing if so. (We used to post a warning to Aide>
1682 * every time this happened, but the network is now so densely
1683 * connected that it's inevitable.)
1685 if (network_usetable(msg) != 0) {
1686 CtdlFreeMessage(msg);
1690 /* Learn network topology from the path */
1691 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1692 network_learn_topology(msg->cm_fields['N'], msg->cm_fields['P']);
1695 /* Is the sending node giving us a very persuasive suggestion about
1696 * which room this message should be saved in? If so, go with that.
1698 if (msg->cm_fields['C'] != NULL) {
1699 safestrncpy(target_room, msg->cm_fields['C'], sizeof target_room);
1702 /* Otherwise, does it have a recipient? If so, validate it... */
1703 else if (msg->cm_fields['R'] != NULL) {
1704 recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
1705 if (recp != NULL) if (recp->num_error != 0) {
1707 "A message you sent could not be delivered due to an invalid address.\n"
1708 "Please check the address and try sending the message again.\n");
1710 free_recipients(recp);
1711 CtdlLogPrintf(CTDL_DEBUG, "Bouncing message due to invalid recipient address.\n");
1714 strcpy(target_room, ""); /* no target room if mail */
1717 /* Our last shot at finding a home for this message is to see if
1718 * it has the O field (Originating room) set.
1720 else if (msg->cm_fields['O'] != NULL) {
1721 safestrncpy(target_room, msg->cm_fields['O'], sizeof target_room);
1724 /* Strip out fields that are only relevant during transit */
1725 if (msg->cm_fields['D'] != NULL) {
1726 free(msg->cm_fields['D']);
1727 msg->cm_fields['D'] = NULL;
1729 if (msg->cm_fields['C'] != NULL) {
1730 free(msg->cm_fields['C']);
1731 msg->cm_fields['C'] = NULL;
1734 /* save the message into a room */
1735 if (PerformNetprocHooks(msg, target_room) == 0) {
1736 msg->cm_flags = CM_SKIP_HOOKS;
1737 CtdlSubmitMsg(msg, recp, target_room, 0);
1739 CtdlFreeMessage(msg);
1740 free_recipients(recp);
1745 * Process a single message from a single file from the inbound queue
1747 void network_process_message(FILE *fp, long msgstart, long msgend) {
1752 hold_pos = ftell(fp);
1753 size = msgend - msgstart + 1;
1754 buffer = malloc(size);
1755 if (buffer != NULL) {
1756 fseek(fp, msgstart, SEEK_SET);
1757 if (fread(buffer, size, 1, fp) > 0) {
1758 network_process_buffer(buffer, size);
1763 fseek(fp, hold_pos, SEEK_SET);
1768 * Process a single file from the inbound queue
1770 void network_process_file(char *filename) {
1772 long msgstart = (-1L);
1773 long msgend = (-1L);
1778 fp = fopen(filename, "rb");
1780 CtdlLogPrintf(CTDL_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
1784 fseek(fp, 0L, SEEK_END);
1785 CtdlLogPrintf(CTDL_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
1788 /* Look for messages in the data stream and break them out */
1789 while (ch = getc(fp), ch >= 0) {
1792 if (msgstart >= 0L) {
1793 msgend = msgcur - 1;
1794 network_process_message(fp, msgstart, msgend);
1802 msgend = msgcur - 1;
1803 if (msgstart >= 0L) {
1804 network_process_message(fp, msgstart, msgend);
1813 * Process anything in the inbound queue
1815 void network_do_spoolin(void) {
1818 struct stat statbuf;
1819 char filename[PATH_MAX];
1820 static time_t last_spoolin_mtime = 0L;
1823 * Check the spoolin directory's modification time. If it hasn't
1824 * been touched, we don't need to scan it.
1826 if (stat(ctdl_netin_dir, &statbuf)) return;
1827 if (statbuf.st_mtime == last_spoolin_mtime) {
1828 CtdlLogPrintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1831 last_spoolin_mtime = statbuf.st_mtime;
1832 CtdlLogPrintf(CTDL_DEBUG, "network: processing inbound queue\n");
1835 * Ok, there's something interesting in there, so scan it.
1837 dp = opendir(ctdl_netin_dir);
1838 if (dp == NULL) return;
1840 while (d = readdir(dp), d != NULL) {
1841 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1848 network_process_file(filename);
1856 * Step 1: consolidate files in the outbound queue into one file per neighbor node
1857 * Step 2: delete any files in the outbound queue that were for neighbors who no longer exist.
1859 void network_consolidate_spoolout(void) {
1862 char filename[PATH_MAX];
1868 /* Step 1: consolidate files in the outbound queue into one file per neighbor node */
1869 dp = opendir(ctdl_netout_dir);
1870 if (dp == NULL) return;
1871 while (d = readdir(dp), d != NULL) {
1873 (strcmp(d->d_name, "."))
1874 && (strcmp(d->d_name, ".."))
1875 && (strchr(d->d_name, '@') != NULL)
1877 safestrncpy(nexthop, d->d_name, sizeof nexthop);
1878 ptr = strchr(nexthop, '@');
1888 CtdlLogPrintf(CTDL_DEBUG, "Consolidate %s to %s\n", filename, nexthop);
1889 if (network_talking_to(nexthop, NTT_CHECK)) {
1890 CtdlLogPrintf(CTDL_DEBUG,
1891 "Currently online with %s - skipping for now\n",
1896 network_talking_to(nexthop, NTT_ADD);
1897 snprintf(cmd, sizeof cmd, "/bin/cat %s >>%s/%s && /bin/rm -f %s",
1899 ctdl_netout_dir, nexthop,
1903 network_talking_to(nexthop, NTT_REMOVE);
1909 /* Step 2: delete any files in the outbound queue that were for neighbors who no longer exist */
1911 dp = opendir(ctdl_netout_dir);
1912 if (dp == NULL) return;
1914 while (d = readdir(dp), d != NULL) {
1915 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1917 ptr = strchr(d->d_name, '@');
1927 strcpy(nexthop, "");
1928 i = is_valid_node(nexthop, NULL, d->d_name);
1930 if ( (i != 0) || !IsEmptyStr(nexthop) ) {
1941 * receive network spool from the remote system
1943 void receive_spool(int *sock, char *remote_nodename) {
1944 int download_len = 0L;
1945 int bytes_received = 0L;
1947 char tempfilename[PATH_MAX];
1948 char permfilename[PATH_MAX];
1952 snprintf(tempfilename,
1953 sizeof tempfilename,
1961 snprintf(permfilename,
1962 sizeof permfilename,
1970 if (sock_puts(sock, "NDOP") < 0) return;
1971 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1972 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1973 if (buf[0] != '2') {
1977 download_len = extract_long(&buf[4], 0);
1978 if (download_len <= 0) {
1982 bytes_received = 0L;
1983 fp = fopen(tempfilename, "w");
1985 CtdlLogPrintf(CTDL_CRIT, "Cannot create %s: %s\n", tempfilename, strerror(errno));
1989 CtdlLogPrintf(CTDL_DEBUG, "Expecting to transfer %d bytes\n", download_len);
1990 while (bytes_received < download_len) {
1992 * If shutting down we can exit here and unlink the temp file.
1993 * this shouldn't loose us any messages.
1995 if (CtdlThreadCheckStop())
1998 unlink(tempfilename);
2001 snprintf(buf, sizeof buf, "READ %d|%d",
2003 ((download_len - bytes_received > IGNET_PACKET_SIZE)
2004 ? IGNET_PACKET_SIZE : (download_len - bytes_received))
2007 if (sock_puts(sock, buf) < 0) {
2009 unlink(tempfilename);
2012 if (sock_getln(sock, buf, sizeof buf) < 0) {
2014 unlink(tempfilename);
2018 if (buf[0] == '6') {
2019 plen = extract_int(&buf[4], 0);
2020 StrBuf *pbuf = NewStrBuf();
2021 if (socket_read_blob(sock, pbuf, plen, CLIENT_TIMEOUT) != plen) {
2022 CtdlLogPrintf(CTDL_INFO, "Short read from peer; aborting.\n");
2024 unlink(tempfilename);
2028 fwrite(ChrPtr(pbuf), plen, 1, fp);
2029 bytes_received += plen;
2036 /* Last chance for shutdown exit */
2037 if (CtdlThreadCheckStop())
2039 unlink(tempfilename);
2043 if (sock_puts(sock, "CLOS") < 0) {
2044 unlink(tempfilename);
2049 * From here on we must complete or messages will get lost
2051 if (sock_getln(sock, buf, sizeof buf) < 0) {
2052 unlink(tempfilename);
2056 CtdlLogPrintf(CTDL_DEBUG, "%s\n", buf);
2059 * Now move the temp file to its permanent location.
2061 if (link(tempfilename, permfilename) != 0) {
2062 CtdlLogPrintf(CTDL_ALERT, "Could not link %s to %s: %s\n",
2063 tempfilename, permfilename, strerror(errno)
2067 unlink(tempfilename);
2073 * transmit network spool to the remote system
2075 void transmit_spool(int *sock, char *remote_nodename)
2080 long bytes_to_write, thisblock, bytes_written;
2084 if (sock_puts(sock, "NUOP") < 0) return;
2085 if (sock_getln(sock, buf, sizeof buf) < 0) return;
2086 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2087 if (buf[0] != '2') {
2091 snprintf(sfname, sizeof sfname,
2096 fd = open(sfname, O_RDONLY);
2098 if (errno != ENOENT) {
2099 CtdlLogPrintf(CTDL_CRIT, "cannot open %s: %s\n", sfname, strerror(errno));
2104 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
2105 bytes_to_write = plen;
2106 while (bytes_to_write > 0L) {
2107 /* Exit if shutting down */
2108 if (CtdlThreadCheckStop())
2114 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
2115 if (sock_puts(sock, buf) < 0) {
2119 if (sock_getln(sock, buf, sizeof buf) < 0) {
2123 thisblock = atol(&buf[4]);
2124 if (buf[0] == '7') {
2125 if (sock_write(sock, pbuf, (int) thisblock) < 0) {
2129 bytes_to_write -= thisblock;
2130 bytes_written += thisblock;
2140 /* Last chance for shutdown exit */
2141 if(CtdlThreadCheckStop())
2144 if (sock_puts(sock, "UCLS 1") < 0) return;
2147 * From here on we must complete or messages will get lost
2149 if (sock_getln(sock, buf, sizeof buf) < 0) return;
2150 CtdlLogPrintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n", bytes_written, remote_nodename);
2151 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2152 if (buf[0] == '2') {
2153 CtdlLogPrintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
2161 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
2163 void network_poll_node(char *node, char *secret, char *host, char *port) {
2167 char connected_to[SIZ];
2170 if (network_talking_to(node, NTT_CHECK)) return;
2171 network_talking_to(node, NTT_ADD);
2172 CtdlLogPrintf(CTDL_DEBUG, "network: polling <%s>\n", node);
2173 CtdlLogPrintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
2175 sock = sock_connect(host, port);
2177 CtdlLogPrintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
2178 network_talking_to(node, NTT_REMOVE);
2182 CtdlLogPrintf(CTDL_DEBUG, "Connected!\n");
2183 CCC->sReadBuf = NewStrBuf();
2184 CCC->sMigrateBuf = NewStrBuf();
2187 /* Read the server greeting */
2188 if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
2189 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2191 /* Check that the remote is who we think it is and warn the Aide if not */
2192 extract_token (connected_to, buf, 1, ' ', sizeof connected_to);
2193 if (strcmp(connected_to, node))
2195 snprintf(err_buf, sizeof(err_buf),
2196 "Connected to node \"%s\" but I was expecting to connect to node \"%s\".",
2199 CtdlLogPrintf(CTDL_ERR, "%s\n", err_buf);
2200 CtdlAideMessage(err_buf, "Network error");
2203 /* We're talking to the correct node. Now identify ourselves. */
2204 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
2205 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2206 if (sock_puts(&sock, buf) <0) goto bail;
2207 if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
2208 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2209 if (buf[0] != '2') {
2213 /* At this point we are authenticated. */
2214 if (!CtdlThreadCheckStop())
2215 receive_spool(&sock, node);
2216 if (!CtdlThreadCheckStop())
2217 transmit_spool(&sock, node);
2220 sock_puts(&sock, "QUIT");
2222 FreeStrBuf(&CCC->sReadBuf);
2223 FreeStrBuf(&CCC->sMigrateBuf);
2226 network_talking_to(node, NTT_REMOVE);
2232 * Poll other Citadel nodes and transfer inbound/outbound network data.
2233 * Set "full" to nonzero to force a poll of every node, or to zero to poll
2234 * only nodes to which we have data to send.
2236 void network_poll_other_citadel_nodes(int full_poll) {
2244 char spoolfile[256];
2246 if (working_ignetcfg == NULL) {
2247 CtdlLogPrintf(CTDL_DEBUG, "network: no neighbor nodes are configured - not polling.\n");
2251 /* Use the string tokenizer to grab one line at a time */
2252 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
2253 if(CtdlThreadCheckStop())
2255 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
2256 extract_token(node, linebuf, 0, '|', sizeof node);
2257 extract_token(secret, linebuf, 1, '|', sizeof secret);
2258 extract_token(host, linebuf, 2, '|', sizeof host);
2259 extract_token(port, linebuf, 3, '|', sizeof port);
2260 if ( !IsEmptyStr(node) && !IsEmptyStr(secret)
2261 && !IsEmptyStr(host) && !IsEmptyStr(port)) {
2270 if (access(spoolfile, R_OK) == 0) {
2275 network_poll_node(node, secret, host, port);
2286 * It's ok if these directories already exist. Just fail silently.
2288 void create_spool_dirs(void) {
2289 if ((mkdir(ctdl_spool_dir, 0700) != 0) && (errno != EEXIST))
2290 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_spool_dir, strerror(errno));
2291 if (chown(ctdl_spool_dir, CTDLUID, (-1)) != 0)
2292 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_spool_dir, strerror(errno));
2293 if ((mkdir(ctdl_netin_dir, 0700) != 0) && (errno != EEXIST))
2294 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_netin_dir, strerror(errno));
2295 if (chown(ctdl_netin_dir, CTDLUID, (-1)) != 0)
2296 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netin_dir, strerror(errno));
2297 if ((mkdir(ctdl_nettmp_dir, 0700) != 0) && (errno != EEXIST))
2298 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_nettmp_dir, strerror(errno));
2299 if (chown(ctdl_nettmp_dir, CTDLUID, (-1)) != 0)
2300 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_nettmp_dir, strerror(errno));
2301 if ((mkdir(ctdl_netout_dir, 0700) != 0) && (errno != EEXIST))
2302 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_netout_dir, strerror(errno));
2303 if (chown(ctdl_netout_dir, CTDLUID, (-1)) != 0)
2304 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netout_dir, strerror(errno));
2312 * network_do_queue()
2314 * Run through the rooms doing various types of network stuff.
2316 void network_do_queue(void) {
2317 static time_t last_run = 0L;
2318 struct RoomProcList *ptr;
2319 int full_processing = 1;
2322 * Run the full set of processing tasks no more frequently
2323 * than once every n seconds
2325 if ( (time(NULL) - last_run) < config.c_net_freq ) {
2326 full_processing = 0;
2327 CtdlLogPrintf(CTDL_DEBUG, "Network full processing in %ld seconds.\n",
2328 config.c_net_freq - (time(NULL)- last_run)
2333 * This is a simple concurrency check to make sure only one queue run
2334 * is done at a time. We could do this with a mutex, but since we
2335 * don't really require extremely fine granularity here, we'll do it
2336 * with a static variable instead.
2343 /* Load the IGnet Configuration into memory */
2344 load_working_ignetcfg();
2347 * Poll other Citadel nodes. Maybe. If "full_processing" is set
2348 * then we poll everyone. Otherwise we only poll nodes we have stuff
2351 network_poll_other_citadel_nodes(full_processing);
2354 * Load the network map and filter list into memory.
2357 filterlist = load_filter_list();
2360 * Go ahead and run the queue
2362 if (full_processing && !CtdlThreadCheckStop()) {
2363 CtdlLogPrintf(CTDL_DEBUG, "network: loading outbound queue\n");
2364 CtdlForEachRoom(network_queue_room, NULL);
2367 if (rplist != NULL) {
2368 CtdlLogPrintf(CTDL_DEBUG, "network: running outbound queue\n");
2369 while (rplist != NULL && !CtdlThreadCheckStop()) {
2370 char spoolroomname[ROOMNAMELEN];
2371 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
2372 begin_critical_section(S_RPLIST);
2374 /* pop this record off the list */
2376 rplist = rplist->next;
2379 /* invalidate any duplicate entries to prevent double processing */
2380 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
2381 if (!strcasecmp(ptr->name, spoolroomname)) {
2386 end_critical_section(S_RPLIST);
2387 if (spoolroomname[0] != 0) {
2388 network_spoolout_room(spoolroomname);
2393 /* If there is anything in the inbound queue, process it */
2394 if (!CtdlThreadCheckStop()) {
2395 network_do_spoolin();
2398 /* Save the network map back to disk */
2399 write_network_map();
2401 /* Free the filter list in memory */
2402 free_filter_list(filterlist);
2405 network_consolidate_spoolout();
2407 CtdlLogPrintf(CTDL_DEBUG, "network: queue run completed\n");
2409 if (full_processing) {
2410 last_run = time(NULL);
2418 * cmd_netp() - authenticate to the server as another Citadel node polling
2419 * for network traffic
2421 void cmd_netp(char *cmdbuf)
2432 extract_token(node, cmdbuf, 0, '|', sizeof node);
2433 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2435 /* load the IGnet Configuration to check node validity */
2436 load_working_ignetcfg();
2437 v = is_valid_node(nexthop, secret, node);
2440 snprintf(err_buf, sizeof err_buf,
2441 "An unknown Citadel server called \"%s\" attempted to connect from %s [%s].\n",
2442 node, CC->cs_host, CC->cs_addr
2444 CtdlLogPrintf(CTDL_WARNING, err_buf);
2445 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2446 CtdlAideMessage(err_buf, "IGNet Networking.");
2450 if (strcasecmp(pass, secret)) {
2451 snprintf(err_buf, sizeof err_buf,
2452 "A Citadel server at %s [%s] failed to authenticate as network node \"%s\".\n",
2453 CC->cs_host, CC->cs_addr, node
2455 CtdlLogPrintf(CTDL_WARNING, err_buf);
2456 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2457 CtdlAideMessage(err_buf, "IGNet Networking.");
2461 if (network_talking_to(node, NTT_CHECK)) {
2462 CtdlLogPrintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2463 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2467 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2468 network_talking_to(node, NTT_ADD);
2469 CtdlLogPrintf(CTDL_NOTICE, "Network node <%s> logged in from %s [%s]\n",
2470 CC->net_node, CC->cs_host, CC->cs_addr
2472 cprintf("%d authenticated as network node '%s'\n", CIT_OK, CC->net_node);
2476 int network_room_handler (struct ctdlroom *room)
2478 network_queue_room(room, NULL);
2482 void *ignet_thread(void *arg) {
2483 struct CitContext ignet_thread_CC;
2485 CtdlLogPrintf(CTDL_DEBUG, "ignet_thread() initializing\n");
2486 CtdlFillSystemContext(&ignet_thread_CC, "IGnet Queue");
2487 citthread_setspecific(MyConKey, (void *)&ignet_thread_CC);
2489 while (!CtdlThreadCheckStop()) {
2491 CtdlThreadSleep(60);
2494 CtdlClearSystemContext();
2502 * Module entry point
2504 CTDL_MODULE_INIT(network)
2508 create_spool_dirs();
2509 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2510 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2511 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2512 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2513 CtdlRegisterRoomHook(network_room_handler);
2514 CtdlRegisterCleanupHook(destroy_network_queue_room);
2515 CtdlThreadCreate("SMTP Send", CTDLTHREAD_BIGSTACK, ignet_thread, NULL);