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 rlen = strlen(CC->room.QRname);
720 pCh = strstr(msg->cm_fields['U'], CC->room.QRname);
722 (*(pCh + rlen) != ']') ||
723 (pCh == msg->cm_fields['U']) ||
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 /* if we don't already have a 'reply to' field, put our roomname in. */
739 if (msg->cm_fields['K'] == NULL) {
740 msg->cm_fields['K'] = malloc(256);
741 snprintf(msg->cm_fields['K'], 256,
742 "room_%s@%s", CC->room.QRname,
744 for (i=0; msg->cm_fields['K'][i]; ++i) {
745 if (isspace(msg->cm_fields['K'][i])) {
746 msg->cm_fields['K'][i] = '_';
751 /* Handle delivery */
752 network_deliver_list(msg, sc);
753 CtdlFreeMessage(msg);
758 * Process digest recipients
760 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
761 msg = CtdlFetchMessage(msgnum, 1);
763 fprintf(sc->digestfp, " -----------------------------------"
764 "------------------------------------"
766 fprintf(sc->digestfp, "From: ");
767 if (msg->cm_fields['A'] != NULL) {
768 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
770 if (msg->cm_fields['F'] != NULL) {
771 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
773 else if (msg->cm_fields['N'] != NULL) {
774 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
776 fprintf(sc->digestfp, "\n");
777 if (msg->cm_fields['U'] != NULL) {
778 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
781 CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
783 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
784 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0, 0);
786 StrBufTrim(CC->redirect_buffer);
787 fwrite(HKEY("\n"), 1, sc->digestfp);
788 fwrite(SKEY(CC->redirect_buffer), 1, sc->digestfp);
789 fwrite(HKEY("\n"), 1, sc->digestfp);
791 FreeStrBuf(&CC->redirect_buffer);
793 sc->num_msgs_spooled += 1;
799 * Process client-side list participations for this room
802 if (sc->participates != NULL) {
803 msg = CtdlFetchMessage(msgnum, 1);
806 /* Only send messages which originated on our own Citadel
807 * network, otherwise we'll end up sending the remote
808 * mailing list's messages back to it, which is rude...
810 ok_to_participate = 0;
811 if (msg->cm_fields['N'] != NULL) {
812 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
813 ok_to_participate = 1;
815 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
816 ok_to_participate = 1;
819 if (ok_to_participate) {
820 if (msg->cm_fields['F'] != NULL) {
821 free(msg->cm_fields['F']);
823 msg->cm_fields['F'] = malloc(SIZ);
824 /* Replace the Internet email address of the actual
825 * author with the email address of the room itself,
826 * so the remote listserv doesn't reject us.
827 * FIXME ... I want to be able to pick any address
829 snprintf(msg->cm_fields['F'], SIZ,
830 "room_%s@%s", CC->room.QRname,
832 for (i=0; msg->cm_fields['F'][i]; ++i) {
833 if (isspace(msg->cm_fields['F'][i])) {
834 msg->cm_fields['F'][i] = '_';
839 * Figure out how big a buffer we need to allocate
841 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
843 if (msg->cm_fields['R'] == NULL) {
844 free(msg->cm_fields['R']);
846 msg->cm_fields['R'] = strdup(nptr->name);
848 valid = validate_recipients(nptr->name, NULL, 0);
849 CtdlSubmitMsg(msg, valid, "", 0);
850 free_recipients(valid);
854 CtdlFreeMessage(msg);
859 * Process IGnet push shares
861 msg = CtdlFetchMessage(msgnum, 1);
865 /* Prepend our node name to the Path field whenever
866 * sending a message to another IGnet node
868 if (msg->cm_fields['P'] == NULL) {
869 msg->cm_fields['P'] = strdup("username");
871 newpath_len = strlen(msg->cm_fields['P']) +
872 strlen(config.c_nodename) + 2;
873 newpath = malloc(newpath_len);
874 snprintf(newpath, newpath_len, "%s!%s",
875 config.c_nodename, msg->cm_fields['P']);
876 free(msg->cm_fields['P']);
877 msg->cm_fields['P'] = newpath;
880 * Determine if this message is set to be deleted
881 * after sending out on the network
883 if (msg->cm_fields['S'] != NULL) {
884 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
885 delete_after_send = 1;
889 /* Now send it to every node */
890 if (sc->ignet_push_shares != NULL)
891 for (mptr = sc->ignet_push_shares; mptr != NULL;
896 /* Check for valid node name */
897 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
898 CtdlLogPrintf(CTDL_ERR, "Invalid node <%s>\n", mptr->remote_nodename);
902 /* Check for split horizon */
903 CtdlLogPrintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
904 bang = num_tokens(msg->cm_fields['P'], '!');
905 if (bang > 1) for (i=0; i<(bang-1); ++i) {
906 extract_token(buf, msg->cm_fields['P'], i, '!', sizeof buf);
907 CtdlLogPrintf(CTDL_DEBUG, "Compare <%s> to <%s>\n",
908 buf, mptr->remote_nodename) ;
909 if (!strcasecmp(buf, mptr->remote_nodename)) {
911 CtdlLogPrintf(CTDL_DEBUG, "Not sending to %s\n",
912 mptr->remote_nodename);
915 CtdlLogPrintf(CTDL_DEBUG, "Sending to %s\n", mptr->remote_nodename);
919 /* Send the message */
923 * Force the message to appear in the correct room
924 * on the far end by setting the C field correctly
926 if (msg->cm_fields['C'] != NULL) {
927 free(msg->cm_fields['C']);
929 if (!IsEmptyStr(mptr->remote_roomname)) {
930 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
933 msg->cm_fields['C'] = strdup(CC->room.QRname);
936 /* serialize it for transmission */
937 serialize_message(&sermsg, msg);
938 if (sermsg.len > 0) {
940 /* write it to a spool file */
941 snprintf(filename, sizeof filename,"%s/%s@%lx%x",
943 mptr->remote_nodename,
947 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
948 fp = fopen(filename, "ab");
955 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
958 /* free the serialized version */
964 CtdlFreeMessage(msg);
967 /* update lastsent */
968 sc->lastsent = msgnum;
970 /* Delete this message if delete-after-send is set */
971 if (delete_after_send) {
972 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
978 int read_spoolcontrol_file(SpoolControl **scc, char *filename)
984 char roomname[ROOMNAMELEN];
987 int skipthisline = 0;
988 namelist *nptr = NULL;
989 maplist *mptr = NULL;
992 fp = fopen(filename, "r");
996 sc = malloc(sizeof(SpoolControl));
997 memset(sc, 0, sizeof(SpoolControl));
1000 while (fgets(buf, sizeof buf, fp) != NULL) {
1001 buf[strlen(buf)-1] = 0;
1003 extract_token(instr, buf, 0, '|', sizeof instr);
1004 if (!strcasecmp(instr, strof(lastsent))) {
1005 sc->lastsent = extract_long(buf, 1);
1007 else if (!strcasecmp(instr, strof(listrecp))) {
1009 malloc(sizeof(namelist));
1010 nptr->next = sc->listrecps;
1011 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
1012 sc->listrecps = nptr;
1014 else if (!strcasecmp(instr, strof(participate))) {
1016 malloc(sizeof(namelist));
1017 nptr->next = sc->participates;
1018 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
1019 sc->participates = nptr;
1021 else if (!strcasecmp(instr, strof(digestrecp))) {
1023 malloc(sizeof(namelist));
1024 nptr->next = sc->digestrecps;
1025 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
1026 sc->digestrecps = nptr;
1028 else if (!strcasecmp(instr, strof(ignet_push_share))) {
1029 extract_token(nodename, buf, 1, '|', sizeof nodename);
1030 extract_token(roomname, buf, 2, '|', sizeof roomname);
1031 mptr = (maplist *) malloc(sizeof(maplist));
1032 mptr->next = sc->ignet_push_shares;
1033 strcpy(mptr->remote_nodename, nodename);
1034 strcpy(mptr->remote_roomname, roomname);
1035 sc->ignet_push_shares = mptr;
1038 /* Preserve 'other' lines ... *unless* they happen to
1039 * be subscribe/unsubscribe pendings with expired
1043 if (!strncasecmp(buf, strof(subpending)"|", 11)) {
1044 if (time(NULL) - extract_long(buf, 4) > EXP) {
1048 if (!strncasecmp(buf, strof(unsubpending)"|", 13)) {
1049 if (time(NULL) - extract_long(buf, 3) > EXP) {
1054 if (skipthisline == 0) {
1055 linesize = strlen(buf);
1056 sc->misc = realloc(sc->misc,
1057 (miscsize + linesize + 2) );
1058 sprintf(&sc->misc[miscsize], "%s\n", buf);
1059 miscsize = miscsize + linesize + 1;
1069 void free_spoolcontrol_struct(SpoolControl **scc)
1072 namelist *nptr = NULL;
1073 maplist *mptr = NULL;
1076 while (sc->listrecps != NULL) {
1077 nptr = sc->listrecps->next;
1078 free(sc->listrecps);
1079 sc->listrecps = nptr;
1081 /* Do the same for digestrecps */
1082 while (sc->digestrecps != NULL) {
1083 nptr = sc->digestrecps->next;
1084 free(sc->digestrecps);
1085 sc->digestrecps = nptr;
1087 /* Do the same for participates */
1088 while (sc->participates != NULL) {
1089 nptr = sc->participates->next;
1090 free(sc->participates);
1091 sc->participates = nptr;
1093 while (sc->ignet_push_shares != NULL) {
1094 mptr = sc->ignet_push_shares->next;
1095 free(sc->ignet_push_shares);
1096 sc->ignet_push_shares = mptr;
1103 int writenfree_spoolcontrol_file(SpoolControl **scc, char *filename)
1105 char tempfilename[PATH_MAX];
1108 namelist *nptr = NULL;
1109 maplist *mptr = NULL;
1113 long reltid; /* if we don't have SYS_gettid, use "random" value */
1117 len = strlen(filename);
1118 memcpy(tempfilename, filename, len + 1);
1121 #if defined(HAVE_SYSCALL_H) && defined (SYS_gettid)
1122 reltid = syscall(SYS_gettid);
1124 gettimeofday(&tv, NULL);
1125 /* Promote to time_t; types differ on some OSes (like darwin) */
1126 unixtime = tv.tv_sec;
1128 sprintf(tempfilename + len, ".%ld-%ld", reltid, unixtime);
1131 TmpFD = open(tempfilename, O_CREAT|O_EXCL|O_RDWR, S_IRUSR|S_IWUSR);
1133 if ((TmpFD < 0) || (errno != 0)) {
1134 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
1135 filename, strerror(errno));
1136 free_spoolcontrol_struct(scc);
1137 unlink(tempfilename);
1140 fchown(TmpFD, config.c_ctdluid, 0);
1141 StrBufAppendPrintf(Cfg, "lastsent|%ld\n", sc->lastsent);
1143 /* Write out the listrecps while freeing from memory at the
1144 * same time. Am I clever or what? :)
1146 while (sc->listrecps != NULL) {
1147 StrBufAppendPrintf(Cfg, "listrecp|%s\n", sc->listrecps->name);
1148 nptr = sc->listrecps->next;
1149 free(sc->listrecps);
1150 sc->listrecps = nptr;
1152 /* Do the same for digestrecps */
1153 while (sc->digestrecps != NULL) {
1154 StrBufAppendPrintf(Cfg, "digestrecp|%s\n", sc->digestrecps->name);
1155 nptr = sc->digestrecps->next;
1156 free(sc->digestrecps);
1157 sc->digestrecps = nptr;
1159 /* Do the same for participates */
1160 while (sc->participates != NULL) {
1161 StrBufAppendPrintf(Cfg, "participate|%s\n", sc->participates->name);
1162 nptr = sc->participates->next;
1163 free(sc->participates);
1164 sc->participates = nptr;
1166 while (sc->ignet_push_shares != NULL) {
1167 StrBufAppendPrintf(Cfg, "ignet_push_share|%s", sc->ignet_push_shares->remote_nodename);
1168 if (!IsEmptyStr(sc->ignet_push_shares->remote_roomname)) {
1169 StrBufAppendPrintf(Cfg, "|%s", sc->ignet_push_shares->remote_roomname);
1171 StrBufAppendPrintf(Cfg, "\n");
1172 mptr = sc->ignet_push_shares->next;
1173 free(sc->ignet_push_shares);
1174 sc->ignet_push_shares = mptr;
1176 if (sc->misc != NULL) {
1177 StrBufAppendBufPlain(Cfg, sc->misc, -1, 0);
1181 rc = write(TmpFD, ChrPtr(Cfg), StrLength(Cfg));
1182 if ((rc >=0 ) && (rc == StrLength(Cfg)))
1185 rename(tempfilename, filename);
1188 CtdlLogPrintf(CTDL_EMERG,
1189 "unable to write %s; [%s]; not enough space on the disk?\n",
1193 unlink(tempfilename);
1201 int is_recipient(SpoolControl *sc, const char *Name)
1207 nptr = sc->listrecps;
1208 while (nptr != NULL) {
1209 if (strncmp(Name, nptr->name, len)==0)
1213 /* Do the same for digestrecps */
1214 nptr = sc->digestrecps;
1215 while (nptr != NULL) {
1216 if (strncmp(Name, nptr->name, len)==0)
1220 /* Do the same for participates */
1221 nptr = sc->participates;
1222 while (nptr != NULL) {
1223 if (strncmp(Name, nptr->name, len)==0)
1232 * Batch up and send all outbound traffic from the current room
1234 void network_spoolout_room(char *room_to_spool) {
1236 char filename[PATH_MAX];
1241 * If the room doesn't exist, don't try to perform its networking tasks.
1242 * Normally this should never happen, but once in a while maybe a room gets
1243 * queued for networking and then deleted before it can happen.
1245 if (CtdlGetRoom(&CC->room, room_to_spool) != 0) {
1246 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
1250 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1251 begin_critical_section(S_NETCONFIGS);
1253 /* Only do net processing for rooms that have netconfigs */
1254 if (!read_spoolcontrol_file(&sc, filename))
1256 end_critical_section(S_NETCONFIGS);
1259 CtdlLogPrintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
1261 /* If there are digest recipients, we have to build a digest */
1262 if (sc->digestrecps != NULL) {
1263 sc->digestfp = tmpfile();
1264 fprintf(sc->digestfp, "Content-type: text/plain\n\n");
1267 /* Do something useful */
1268 CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
1269 network_spool_msg, sc);
1271 /* If we wrote a digest, deliver it and then close it */
1272 snprintf(buf, sizeof buf, "room_%s@%s",
1273 CC->room.QRname, config.c_fqdn);
1274 for (i=0; buf[i]; ++i) {
1275 buf[i] = tolower(buf[i]);
1276 if (isspace(buf[i])) buf[i] = '_';
1278 if (sc->digestfp != NULL) {
1279 fprintf(sc->digestfp, " -----------------------------------"
1280 "------------------------------------"
1282 "You are subscribed to the '%s' "
1284 "To post to the list: %s\n",
1285 CC->room.QRname, buf
1287 network_deliver_digest(sc); /* deliver and close */
1290 /* Now rewrite the config file */
1291 writenfree_spoolcontrol_file(&sc, filename);
1292 end_critical_section(S_NETCONFIGS);
1298 * Send the *entire* contents of the current room to one specific network node,
1299 * ignoring anything we know about which messages have already undergone
1300 * network processing. This can be used to bring a new node into sync.
1302 int network_sync_to(char *target_node) {
1304 int num_spooled = 0;
1310 char filename[PATH_MAX];
1313 /* Grab the configuration line we're looking for */
1314 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1315 begin_critical_section(S_NETCONFIGS);
1316 fp = fopen(filename, "r");
1318 end_critical_section(S_NETCONFIGS);
1321 while (fgets(buf, sizeof buf, fp) != NULL) {
1322 buf[strlen(buf)-1] = 0;
1323 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1324 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1325 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1326 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1327 && (!strcasecmp(sc_node, target_node)) ) {
1330 /* Concise syntax because we don't need a full linked-list */
1331 memset(&sc, 0, sizeof(SpoolControl));
1332 sc.ignet_push_shares = (maplist *)
1333 malloc(sizeof(maplist));
1334 sc.ignet_push_shares->next = NULL;
1335 safestrncpy(sc.ignet_push_shares->remote_nodename,
1337 sizeof sc.ignet_push_shares->remote_nodename);
1338 safestrncpy(sc.ignet_push_shares->remote_roomname,
1340 sizeof sc.ignet_push_shares->remote_roomname);
1344 end_critical_section(S_NETCONFIGS);
1346 if (!found_node) return(-1);
1348 /* Send ALL messages */
1349 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
1350 network_spool_msg, &sc);
1352 /* Concise cleanup because we know there's only one node in the sc */
1353 free(sc.ignet_push_shares);
1355 CtdlLogPrintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1356 num_spooled, target_node);
1357 return(num_spooled);
1362 * Implements the NSYN command
1364 void cmd_nsyn(char *argbuf) {
1366 char target_node[256];
1368 if (CtdlAccessCheck(ac_aide)) return;
1370 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1371 num_spooled = network_sync_to(target_node);
1372 if (num_spooled >= 0) {
1373 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1376 cprintf("%d No such room/node share exists.\n",
1377 ERROR + ROOM_NOT_FOUND);
1384 * Batch up and send all outbound traffic from the current room
1386 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1387 struct RoomProcList *ptr;
1389 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1390 if (ptr == NULL) return;
1392 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1393 begin_critical_section(S_RPLIST);
1396 end_critical_section(S_RPLIST);
1399 void destroy_network_queue_room(void)
1401 struct RoomProcList *cur, *p;
1402 NetMap *nmcur, *nmp;
1405 begin_critical_section(S_RPLIST);
1413 end_critical_section(S_RPLIST);
1416 while (nmcur != NULL)
1423 if (working_ignetcfg != NULL)
1424 free (working_ignetcfg);
1425 working_ignetcfg = NULL;
1430 * Learn topology from path fields
1432 void network_learn_topology(char *node, char *path) {
1436 strcpy(nexthop, "");
1438 if (num_tokens(path, '!') < 3) return;
1439 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1440 if (!strcasecmp(nmptr->nodename, node)) {
1441 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1442 nmptr->lastcontact = time(NULL);
1448 /* If we got here then it's not in the map, so add it. */
1449 nmptr = (NetMap *) malloc(sizeof (NetMap));
1450 strcpy(nmptr->nodename, node);
1451 nmptr->lastcontact = time(NULL);
1452 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1453 nmptr->next = the_netmap;
1462 * Bounce a message back to the sender
1464 void network_bounce(struct CtdlMessage *msg, char *reason) {
1465 char *oldpath = NULL;
1467 char bouncesource[SIZ];
1468 char recipient[SIZ];
1469 struct recptypes *valid = NULL;
1470 char force_room[ROOMNAMELEN];
1471 static int serialnum = 0;
1474 CtdlLogPrintf(CTDL_DEBUG, "entering network_bounce()\n");
1476 if (msg == NULL) return;
1478 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1481 * Give it a fresh message ID
1483 if (msg->cm_fields['I'] != NULL) {
1484 free(msg->cm_fields['I']);
1486 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1487 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1488 msg->cm_fields['I'] = strdup(buf);
1491 * FIXME ... right now we're just sending a bounce; we really want to
1492 * include the text of the bounced message.
1494 if (msg->cm_fields['M'] != NULL) {
1495 free(msg->cm_fields['M']);
1497 msg->cm_fields['M'] = strdup(reason);
1498 msg->cm_format_type = 0;
1501 * Turn the message around
1503 if (msg->cm_fields['R'] == NULL) {
1504 free(msg->cm_fields['R']);
1507 if (msg->cm_fields['D'] == NULL) {
1508 free(msg->cm_fields['D']);
1511 snprintf(recipient, sizeof recipient, "%s@%s",
1512 msg->cm_fields['A'], msg->cm_fields['N']);
1514 if (msg->cm_fields['A'] == NULL) {
1515 free(msg->cm_fields['A']);
1518 if (msg->cm_fields['N'] == NULL) {
1519 free(msg->cm_fields['N']);
1522 if (msg->cm_fields['U'] == NULL) {
1523 free(msg->cm_fields['U']);
1526 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1527 msg->cm_fields['N'] = strdup(config.c_nodename);
1528 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1530 /* prepend our node to the path */
1531 if (msg->cm_fields['P'] != NULL) {
1532 oldpath = msg->cm_fields['P'];
1533 msg->cm_fields['P'] = NULL;
1536 oldpath = strdup("unknown_user");
1538 size = strlen(oldpath) + SIZ;
1539 msg->cm_fields['P'] = malloc(size);
1540 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1543 /* Now submit the message */
1544 valid = validate_recipients(recipient, NULL, 0);
1545 if (valid != NULL) if (valid->num_error != 0) {
1546 free_recipients(valid);
1549 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1550 strcpy(force_room, config.c_aideroom);
1553 strcpy(force_room, "");
1555 if ( (valid == NULL) && IsEmptyStr(force_room) ) {
1556 strcpy(force_room, config.c_aideroom);
1558 CtdlSubmitMsg(msg, valid, force_room, 0);
1561 if (valid != NULL) free_recipients(valid);
1562 CtdlFreeMessage(msg);
1563 CtdlLogPrintf(CTDL_DEBUG, "leaving network_bounce()\n");
1570 * Process a buffer containing a single message from a single file
1571 * from the inbound queue
1573 void network_process_buffer(char *buffer, long size) {
1574 struct CtdlMessage *msg = NULL;
1577 struct recptypes *recp = NULL;
1578 char target_room[ROOMNAMELEN];
1579 struct ser_ret sermsg;
1580 char *oldpath = NULL;
1581 char filename[PATH_MAX];
1584 unsigned char firstbyte;
1585 unsigned char lastbyte;
1587 CtdlLogPrintf(CTDL_DEBUG, "network_process_buffer() processing %ld bytes\n", size);
1589 /* Validate just a little bit. First byte should be FF and * last byte should be 00. */
1590 firstbyte = buffer[0];
1591 lastbyte = buffer[size-1];
1592 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1593 CtdlLogPrintf(CTDL_ERR, "Corrupt message ignored. Length=%ld, firstbyte = %d, lastbyte = %d\n",
1594 size, firstbyte, lastbyte);
1598 /* Set default target room to trash */
1599 strcpy(target_room, TWITROOM);
1601 /* Load the message into memory */
1602 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1603 memset(msg, 0, sizeof(struct CtdlMessage));
1604 msg->cm_magic = CTDLMESSAGE_MAGIC;
1605 msg->cm_anon_type = buffer[1];
1606 msg->cm_format_type = buffer[2];
1608 for (pos = 3; pos < size; ++pos) {
1609 field = buffer[pos];
1610 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1611 pos = pos + strlen(&buffer[(int)pos]);
1614 /* Check for message routing */
1615 if (msg->cm_fields['D'] != NULL) {
1616 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1618 /* route the message */
1619 strcpy(nexthop, "");
1620 if (is_valid_node(nexthop, NULL, msg->cm_fields['D']) == 0) {
1621 /* prepend our node to the path */
1622 if (msg->cm_fields['P'] != NULL) {
1623 oldpath = msg->cm_fields['P'];
1624 msg->cm_fields['P'] = NULL;
1627 oldpath = strdup("unknown_user");
1629 size = strlen(oldpath) + SIZ;
1630 msg->cm_fields['P'] = malloc(size);
1631 snprintf(msg->cm_fields['P'], size, "%s!%s",
1632 config.c_nodename, oldpath);
1635 /* serialize the message */
1636 serialize_message(&sermsg, msg);
1639 if (IsEmptyStr(nexthop)) {
1640 strcpy(nexthop, msg->cm_fields['D']);
1650 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
1651 fp = fopen(filename, "ab");
1653 fwrite(sermsg.ser, sermsg.len, 1, fp);
1657 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1660 CtdlFreeMessage(msg);
1664 else { /* invalid destination node name */
1667 "A message you sent could not be delivered due to an invalid destination node"
1668 " name. Please check the address and try sending the message again.\n");
1677 * Check to see if we already have a copy of this message, and
1678 * abort its processing if so. (We used to post a warning to Aide>
1679 * every time this happened, but the network is now so densely
1680 * connected that it's inevitable.)
1682 if (network_usetable(msg) != 0) {
1683 CtdlFreeMessage(msg);
1687 /* Learn network topology from the path */
1688 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1689 network_learn_topology(msg->cm_fields['N'], msg->cm_fields['P']);
1692 /* Is the sending node giving us a very persuasive suggestion about
1693 * which room this message should be saved in? If so, go with that.
1695 if (msg->cm_fields['C'] != NULL) {
1696 safestrncpy(target_room, msg->cm_fields['C'], sizeof target_room);
1699 /* Otherwise, does it have a recipient? If so, validate it... */
1700 else if (msg->cm_fields['R'] != NULL) {
1701 recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
1702 if (recp != NULL) if (recp->num_error != 0) {
1704 "A message you sent could not be delivered due to an invalid address.\n"
1705 "Please check the address and try sending the message again.\n");
1707 free_recipients(recp);
1708 CtdlLogPrintf(CTDL_DEBUG, "Bouncing message due to invalid recipient address.\n");
1711 strcpy(target_room, ""); /* no target room if mail */
1714 /* Our last shot at finding a home for this message is to see if
1715 * it has the O field (Originating room) set.
1717 else if (msg->cm_fields['O'] != NULL) {
1718 safestrncpy(target_room, msg->cm_fields['O'], sizeof target_room);
1721 /* Strip out fields that are only relevant during transit */
1722 if (msg->cm_fields['D'] != NULL) {
1723 free(msg->cm_fields['D']);
1724 msg->cm_fields['D'] = NULL;
1726 if (msg->cm_fields['C'] != NULL) {
1727 free(msg->cm_fields['C']);
1728 msg->cm_fields['C'] = NULL;
1731 /* save the message into a room */
1732 if (PerformNetprocHooks(msg, target_room) == 0) {
1733 msg->cm_flags = CM_SKIP_HOOKS;
1734 CtdlSubmitMsg(msg, recp, target_room, 0);
1736 CtdlFreeMessage(msg);
1737 free_recipients(recp);
1742 * Process a single message from a single file from the inbound queue
1744 void network_process_message(FILE *fp, long msgstart, long msgend) {
1749 hold_pos = ftell(fp);
1750 size = msgend - msgstart + 1;
1751 buffer = malloc(size);
1752 if (buffer != NULL) {
1753 fseek(fp, msgstart, SEEK_SET);
1754 if (fread(buffer, size, 1, fp) > 0) {
1755 network_process_buffer(buffer, size);
1760 fseek(fp, hold_pos, SEEK_SET);
1765 * Process a single file from the inbound queue
1767 void network_process_file(char *filename) {
1769 long msgstart = (-1L);
1770 long msgend = (-1L);
1775 fp = fopen(filename, "rb");
1777 CtdlLogPrintf(CTDL_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
1781 fseek(fp, 0L, SEEK_END);
1782 CtdlLogPrintf(CTDL_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
1785 /* Look for messages in the data stream and break them out */
1786 while (ch = getc(fp), ch >= 0) {
1789 if (msgstart >= 0L) {
1790 msgend = msgcur - 1;
1791 network_process_message(fp, msgstart, msgend);
1799 msgend = msgcur - 1;
1800 if (msgstart >= 0L) {
1801 network_process_message(fp, msgstart, msgend);
1810 * Process anything in the inbound queue
1812 void network_do_spoolin(void) {
1815 struct stat statbuf;
1816 char filename[PATH_MAX];
1817 static time_t last_spoolin_mtime = 0L;
1820 * Check the spoolin directory's modification time. If it hasn't
1821 * been touched, we don't need to scan it.
1823 if (stat(ctdl_netin_dir, &statbuf)) return;
1824 if (statbuf.st_mtime == last_spoolin_mtime) {
1825 CtdlLogPrintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1828 last_spoolin_mtime = statbuf.st_mtime;
1829 CtdlLogPrintf(CTDL_DEBUG, "network: processing inbound queue\n");
1832 * Ok, there's something interesting in there, so scan it.
1834 dp = opendir(ctdl_netin_dir);
1835 if (dp == NULL) return;
1837 while (d = readdir(dp), d != NULL) {
1838 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1845 network_process_file(filename);
1853 * Step 1: consolidate files in the outbound queue into one file per neighbor node
1854 * Step 2: delete any files in the outbound queue that were for neighbors who no longer exist.
1856 void network_consolidate_spoolout(void) {
1859 char filename[PATH_MAX];
1865 /* Step 1: consolidate files in the outbound queue into one file per neighbor node */
1866 dp = opendir(ctdl_netout_dir);
1867 if (dp == NULL) return;
1868 while (d = readdir(dp), d != NULL) {
1870 (strcmp(d->d_name, "."))
1871 && (strcmp(d->d_name, ".."))
1872 && (strchr(d->d_name, '@') != NULL)
1874 safestrncpy(nexthop, d->d_name, sizeof nexthop);
1875 ptr = strchr(nexthop, '@');
1885 CtdlLogPrintf(CTDL_DEBUG, "Consolidate %s to %s\n", filename, nexthop);
1886 if (network_talking_to(nexthop, NTT_CHECK)) {
1887 CtdlLogPrintf(CTDL_DEBUG,
1888 "Currently online with %s - skipping for now\n",
1893 network_talking_to(nexthop, NTT_ADD);
1894 snprintf(cmd, sizeof cmd, "/bin/cat %s >>%s/%s && /bin/rm -f %s",
1896 ctdl_netout_dir, nexthop,
1900 network_talking_to(nexthop, NTT_REMOVE);
1906 /* Step 2: delete any files in the outbound queue that were for neighbors who no longer exist */
1908 dp = opendir(ctdl_netout_dir);
1909 if (dp == NULL) return;
1911 while (d = readdir(dp), d != NULL) {
1912 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1914 ptr = strchr(d->d_name, '@');
1924 strcpy(nexthop, "");
1925 i = is_valid_node(nexthop, NULL, d->d_name);
1927 if ( (i != 0) || !IsEmptyStr(nexthop) ) {
1938 * receive network spool from the remote system
1940 void receive_spool(int *sock, char *remote_nodename) {
1941 int download_len = 0L;
1942 int bytes_received = 0L;
1944 char tempfilename[PATH_MAX];
1945 char permfilename[PATH_MAX];
1949 snprintf(tempfilename,
1950 sizeof tempfilename,
1958 snprintf(permfilename,
1959 sizeof permfilename,
1967 if (sock_puts(sock, "NDOP") < 0) return;
1968 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1969 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1970 if (buf[0] != '2') {
1974 download_len = extract_long(&buf[4], 0);
1975 if (download_len <= 0) {
1979 bytes_received = 0L;
1980 fp = fopen(tempfilename, "w");
1982 CtdlLogPrintf(CTDL_CRIT, "Cannot create %s: %s\n", tempfilename, strerror(errno));
1986 CtdlLogPrintf(CTDL_DEBUG, "Expecting to transfer %d bytes\n", download_len);
1987 while (bytes_received < download_len) {
1989 * If shutting down we can exit here and unlink the temp file.
1990 * this shouldn't loose us any messages.
1992 if (CtdlThreadCheckStop())
1995 unlink(tempfilename);
1998 snprintf(buf, sizeof buf, "READ %d|%d",
2000 ((download_len - bytes_received > IGNET_PACKET_SIZE)
2001 ? IGNET_PACKET_SIZE : (download_len - bytes_received))
2004 if (sock_puts(sock, buf) < 0) {
2006 unlink(tempfilename);
2009 if (sock_getln(sock, buf, sizeof buf) < 0) {
2011 unlink(tempfilename);
2015 if (buf[0] == '6') {
2016 plen = extract_int(&buf[4], 0);
2017 StrBuf *pbuf = NewStrBuf();
2018 if (socket_read_blob(sock, pbuf, plen, CLIENT_TIMEOUT) != plen) {
2019 CtdlLogPrintf(CTDL_INFO, "Short read from peer; aborting.\n");
2021 unlink(tempfilename);
2025 fwrite(ChrPtr(pbuf), plen, 1, fp);
2026 bytes_received += plen;
2033 /* Last chance for shutdown exit */
2034 if (CtdlThreadCheckStop())
2036 unlink(tempfilename);
2040 if (sock_puts(sock, "CLOS") < 0) {
2041 unlink(tempfilename);
2046 * From here on we must complete or messages will get lost
2048 if (sock_getln(sock, buf, sizeof buf) < 0) {
2049 unlink(tempfilename);
2053 CtdlLogPrintf(CTDL_DEBUG, "%s\n", buf);
2056 * Now move the temp file to its permanent location.
2058 if (link(tempfilename, permfilename) != 0) {
2059 CtdlLogPrintf(CTDL_ALERT, "Could not link %s to %s: %s\n",
2060 tempfilename, permfilename, strerror(errno)
2064 unlink(tempfilename);
2070 * transmit network spool to the remote system
2072 void transmit_spool(int *sock, char *remote_nodename)
2077 long bytes_to_write, thisblock, bytes_written;
2081 if (sock_puts(sock, "NUOP") < 0) return;
2082 if (sock_getln(sock, buf, sizeof buf) < 0) return;
2083 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2084 if (buf[0] != '2') {
2088 snprintf(sfname, sizeof sfname,
2093 fd = open(sfname, O_RDONLY);
2095 if (errno != ENOENT) {
2096 CtdlLogPrintf(CTDL_CRIT, "cannot open %s: %s\n", sfname, strerror(errno));
2101 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
2102 bytes_to_write = plen;
2103 while (bytes_to_write > 0L) {
2104 /* Exit if shutting down */
2105 if (CtdlThreadCheckStop())
2111 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
2112 if (sock_puts(sock, buf) < 0) {
2116 if (sock_getln(sock, buf, sizeof buf) < 0) {
2120 thisblock = atol(&buf[4]);
2121 if (buf[0] == '7') {
2122 if (sock_write(sock, pbuf, (int) thisblock) < 0) {
2126 bytes_to_write -= thisblock;
2127 bytes_written += thisblock;
2137 /* Last chance for shutdown exit */
2138 if(CtdlThreadCheckStop())
2141 if (sock_puts(sock, "UCLS 1") < 0) return;
2144 * From here on we must complete or messages will get lost
2146 if (sock_getln(sock, buf, sizeof buf) < 0) return;
2147 CtdlLogPrintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n", bytes_written, remote_nodename);
2148 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2149 if (buf[0] == '2') {
2150 CtdlLogPrintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
2158 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
2160 void network_poll_node(char *node, char *secret, char *host, char *port) {
2164 char connected_to[SIZ];
2167 if (network_talking_to(node, NTT_CHECK)) return;
2168 network_talking_to(node, NTT_ADD);
2169 CtdlLogPrintf(CTDL_DEBUG, "network: polling <%s>\n", node);
2170 CtdlLogPrintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
2172 sock = sock_connect(host, port);
2174 CtdlLogPrintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
2175 network_talking_to(node, NTT_REMOVE);
2179 CtdlLogPrintf(CTDL_DEBUG, "Connected!\n");
2180 CCC->SBuf.Buf = NewStrBuf();
2181 CCC->sMigrateBuf = NewStrBuf();
2182 CCC->SBuf.ReadWritePointer = NULL;
2184 /* Read the server greeting */
2185 if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
2186 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2188 /* Check that the remote is who we think it is and warn the Aide if not */
2189 extract_token (connected_to, buf, 1, ' ', sizeof connected_to);
2190 if (strcmp(connected_to, node))
2192 snprintf(err_buf, sizeof(err_buf),
2193 "Connected to node \"%s\" but I was expecting to connect to node \"%s\".",
2196 CtdlLogPrintf(CTDL_ERR, "%s\n", err_buf);
2197 CtdlAideMessage(err_buf, "Network error");
2200 /* We're talking to the correct node. Now identify ourselves. */
2201 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
2202 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2203 if (sock_puts(&sock, buf) <0) goto bail;
2204 if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
2205 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2206 if (buf[0] != '2') {
2210 /* At this point we are authenticated. */
2211 if (!CtdlThreadCheckStop())
2212 receive_spool(&sock, node);
2213 if (!CtdlThreadCheckStop())
2214 transmit_spool(&sock, node);
2217 sock_puts(&sock, "QUIT");
2219 FreeStrBuf(&CCC->SBuf.Buf);
2220 FreeStrBuf(&CCC->sMigrateBuf);
2223 network_talking_to(node, NTT_REMOVE);
2229 * Poll other Citadel nodes and transfer inbound/outbound network data.
2230 * Set "full" to nonzero to force a poll of every node, or to zero to poll
2231 * only nodes to which we have data to send.
2233 void network_poll_other_citadel_nodes(int full_poll) {
2241 char spoolfile[256];
2243 if (working_ignetcfg == NULL) {
2244 CtdlLogPrintf(CTDL_DEBUG, "network: no neighbor nodes are configured - not polling.\n");
2248 /* Use the string tokenizer to grab one line at a time */
2249 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
2250 if(CtdlThreadCheckStop())
2252 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
2253 extract_token(node, linebuf, 0, '|', sizeof node);
2254 extract_token(secret, linebuf, 1, '|', sizeof secret);
2255 extract_token(host, linebuf, 2, '|', sizeof host);
2256 extract_token(port, linebuf, 3, '|', sizeof port);
2257 if ( !IsEmptyStr(node) && !IsEmptyStr(secret)
2258 && !IsEmptyStr(host) && !IsEmptyStr(port)) {
2267 if (access(spoolfile, R_OK) == 0) {
2272 network_poll_node(node, secret, host, port);
2283 * It's ok if these directories already exist. Just fail silently.
2285 void create_spool_dirs(void) {
2286 if ((mkdir(ctdl_spool_dir, 0700) != 0) && (errno != EEXIST))
2287 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_spool_dir, strerror(errno));
2288 if (chown(ctdl_spool_dir, CTDLUID, (-1)) != 0)
2289 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_spool_dir, strerror(errno));
2290 if ((mkdir(ctdl_netin_dir, 0700) != 0) && (errno != EEXIST))
2291 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_netin_dir, strerror(errno));
2292 if (chown(ctdl_netin_dir, CTDLUID, (-1)) != 0)
2293 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netin_dir, strerror(errno));
2294 if ((mkdir(ctdl_nettmp_dir, 0700) != 0) && (errno != EEXIST))
2295 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_nettmp_dir, strerror(errno));
2296 if (chown(ctdl_nettmp_dir, CTDLUID, (-1)) != 0)
2297 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_nettmp_dir, strerror(errno));
2298 if ((mkdir(ctdl_netout_dir, 0700) != 0) && (errno != EEXIST))
2299 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_netout_dir, strerror(errno));
2300 if (chown(ctdl_netout_dir, CTDLUID, (-1)) != 0)
2301 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netout_dir, strerror(errno));
2309 * network_do_queue()
2311 * Run through the rooms doing various types of network stuff.
2313 void network_do_queue(void) {
2314 static time_t last_run = 0L;
2315 struct RoomProcList *ptr;
2316 int full_processing = 1;
2319 * Run the full set of processing tasks no more frequently
2320 * than once every n seconds
2322 if ( (time(NULL) - last_run) < config.c_net_freq ) {
2323 full_processing = 0;
2324 CtdlLogPrintf(CTDL_DEBUG, "Network full processing in %ld seconds.\n",
2325 config.c_net_freq - (time(NULL)- last_run)
2330 * This is a simple concurrency check to make sure only one queue run
2331 * is done at a time. We could do this with a mutex, but since we
2332 * don't really require extremely fine granularity here, we'll do it
2333 * with a static variable instead.
2340 /* Load the IGnet Configuration into memory */
2341 load_working_ignetcfg();
2344 * Poll other Citadel nodes. Maybe. If "full_processing" is set
2345 * then we poll everyone. Otherwise we only poll nodes we have stuff
2348 network_poll_other_citadel_nodes(full_processing);
2351 * Load the network map and filter list into memory.
2354 filterlist = load_filter_list();
2357 * Go ahead and run the queue
2359 if (full_processing && !CtdlThreadCheckStop()) {
2360 CtdlLogPrintf(CTDL_DEBUG, "network: loading outbound queue\n");
2361 CtdlForEachRoom(network_queue_room, NULL);
2364 if (rplist != NULL) {
2365 CtdlLogPrintf(CTDL_DEBUG, "network: running outbound queue\n");
2366 while (rplist != NULL && !CtdlThreadCheckStop()) {
2367 char spoolroomname[ROOMNAMELEN];
2368 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
2369 begin_critical_section(S_RPLIST);
2371 /* pop this record off the list */
2373 rplist = rplist->next;
2376 /* invalidate any duplicate entries to prevent double processing */
2377 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
2378 if (!strcasecmp(ptr->name, spoolroomname)) {
2383 end_critical_section(S_RPLIST);
2384 if (spoolroomname[0] != 0) {
2385 network_spoolout_room(spoolroomname);
2390 /* If there is anything in the inbound queue, process it */
2391 if (!CtdlThreadCheckStop()) {
2392 network_do_spoolin();
2395 /* Save the network map back to disk */
2396 write_network_map();
2398 /* Free the filter list in memory */
2399 free_filter_list(filterlist);
2402 network_consolidate_spoolout();
2404 CtdlLogPrintf(CTDL_DEBUG, "network: queue run completed\n");
2406 if (full_processing) {
2407 last_run = time(NULL);
2415 * cmd_netp() - authenticate to the server as another Citadel node polling
2416 * for network traffic
2418 void cmd_netp(char *cmdbuf)
2429 extract_token(node, cmdbuf, 0, '|', sizeof node);
2430 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2432 /* load the IGnet Configuration to check node validity */
2433 load_working_ignetcfg();
2434 v = is_valid_node(nexthop, secret, node);
2437 snprintf(err_buf, sizeof err_buf,
2438 "An unknown Citadel server called \"%s\" attempted to connect from %s [%s].\n",
2439 node, CC->cs_host, CC->cs_addr
2441 CtdlLogPrintf(CTDL_WARNING, err_buf);
2442 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2443 CtdlAideMessage(err_buf, "IGNet Networking.");
2447 if (strcasecmp(pass, secret)) {
2448 snprintf(err_buf, sizeof err_buf,
2449 "A Citadel server at %s [%s] failed to authenticate as network node \"%s\".\n",
2450 CC->cs_host, CC->cs_addr, node
2452 CtdlLogPrintf(CTDL_WARNING, err_buf);
2453 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2454 CtdlAideMessage(err_buf, "IGNet Networking.");
2458 if (network_talking_to(node, NTT_CHECK)) {
2459 CtdlLogPrintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2460 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2464 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2465 network_talking_to(node, NTT_ADD);
2466 CtdlLogPrintf(CTDL_NOTICE, "Network node <%s> logged in from %s [%s]\n",
2467 CC->net_node, CC->cs_host, CC->cs_addr
2469 cprintf("%d authenticated as network node '%s'\n", CIT_OK, CC->net_node);
2473 int network_room_handler (struct ctdlroom *room)
2475 network_queue_room(room, NULL);
2479 void *ignet_thread(void *arg) {
2480 struct CitContext ignet_thread_CC;
2482 CtdlLogPrintf(CTDL_DEBUG, "ignet_thread() initializing\n");
2483 CtdlFillSystemContext(&ignet_thread_CC, "IGnet Queue");
2484 citthread_setspecific(MyConKey, (void *)&ignet_thread_CC);
2486 while (!CtdlThreadCheckStop()) {
2488 CtdlThreadSleep(60);
2491 CtdlClearSystemContext();
2499 * Module entry point
2501 CTDL_MODULE_INIT(network)
2505 create_spool_dirs();
2506 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2507 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2508 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2509 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2510 CtdlRegisterRoomHook(network_room_handler);
2511 CtdlRegisterCleanupHook(destroy_network_queue_room);
2512 CtdlThreadCreate("SMTP Send", CTDLTHREAD_BIGSTACK, ignet_thread, NULL);