4 * This module handles shared rooms, inter-Citadel mail, and outbound
5 * mailing list processing.
7 * Copyright (c) 2000-2010 by the citadel.org team
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * ** NOTE ** A word on the S_NETCONFIGS semaphore:
24 * This is a fairly high-level type of critical section. It ensures that no
25 * two threads work on the netconfigs files at the same time. Since we do
26 * so many things inside these, here are the rules:
27 * 1. begin_critical_section(S_NETCONFIGS) *before* begin_ any others.
28 * 2. Do *not* perform any I/O with the client during these sections.
33 * Duration of time (in seconds) after which pending list subscribe/unsubscribe
34 * requests that have not been confirmed will be deleted.
36 #define EXP 259200 /* three days */
48 #include <sys/types.h>
50 #if TIME_WITH_SYS_TIME
51 # include <sys/time.h>
55 # include <sys/time.h>
63 # if HAVE_SYS_SYSCALL_H
64 # include <sys/syscall.h>
71 #include <libcitadel.h>
74 #include "citserver.h"
80 #include "internet_addressing.h"
81 #include "serv_network.h"
82 #include "clientsocket.h"
84 #include "citadel_dirs.h"
93 #include "ctdl_module.h"
97 /* Nonzero while we are doing network processing */
98 static int doing_queue = 0;
101 * When we do network processing, it's accomplished in two passes; one to
102 * gather a list of rooms and one to actually do them. It's ok that rplist
103 * is global; we have a mutex that keeps it safe.
105 struct RoomProcList *rplist = NULL;
108 * We build a map of network nodes during processing.
110 NetMap *the_netmap = NULL;
111 int netmap_changed = 0;
112 char *working_ignetcfg = NULL;
115 * Load or refresh the Citadel network (IGnet) configuration for this node.
117 void load_working_ignetcfg(void) {
121 cfg = CtdlGetSysConfig(IGNETCFG);
126 oldcfg = working_ignetcfg;
127 working_ignetcfg = cfg;
128 if (oldcfg != NULL) {
138 * Keep track of what messages to reject
140 FilterList *load_filter_list(void) {
141 char *serialized_list = NULL;
144 FilterList *newlist = NULL;
147 serialized_list = CtdlGetSysConfig(FILTERLIST);
148 if (serialized_list == NULL) return(NULL); /* if null, no entries */
150 /* Use the string tokenizer to grab one line at a time */
151 for (i=0; i<num_tokens(serialized_list, '\n'); ++i) {
152 extract_token(buf, serialized_list, i, '\n', sizeof buf);
153 nptr = (FilterList *) malloc(sizeof(FilterList));
154 extract_token(nptr->fl_user, buf, 0, '|', sizeof nptr->fl_user);
155 striplt(nptr->fl_user);
156 extract_token(nptr->fl_room, buf, 1, '|', sizeof nptr->fl_room);
157 striplt(nptr->fl_room);
158 extract_token(nptr->fl_node, buf, 2, '|', sizeof nptr->fl_node);
159 striplt(nptr->fl_node);
161 /* Cowardly refuse to add an any/any/any entry that would
162 * end up filtering every single message.
164 if (IsEmptyStr(nptr->fl_user) &&
165 IsEmptyStr(nptr->fl_room) &&
166 IsEmptyStr(nptr->fl_node)) {
170 nptr->next = newlist;
175 free(serialized_list);
180 void free_filter_list(FilterList *fl) {
181 if (fl == NULL) return;
182 free_filter_list(fl->next);
189 * Check the use table. This is a list of messages which have recently
190 * arrived on the system. It is maintained and queried to prevent the same
191 * message from being entered into the database multiple times if it happens
192 * to arrive multiple times by accident.
194 int network_usetable(struct CtdlMessage *msg) {
197 struct cdbdata *cdbut;
200 /* Bail out if we can't generate a message ID */
204 if (msg->cm_fields['I'] == NULL) {
207 if (IsEmptyStr(msg->cm_fields['I'])) {
211 /* Generate the message ID */
212 strcpy(msgid, msg->cm_fields['I']);
213 if (haschar(msgid, '@') == 0) {
215 if (msg->cm_fields['N'] != NULL) {
216 strcat(msgid, msg->cm_fields['N']);
223 cdbut = cdb_fetch(CDB_USETABLE, msgid, strlen(msgid));
226 CtdlLogPrintf(CTDL_DEBUG, "network_usetable() : we already have %s\n", msgid);
230 /* If we got to this point, it's unique: add it. */
231 strcpy(ut.ut_msgid, msgid);
232 ut.ut_timestamp = time(NULL);
233 cdb_store(CDB_USETABLE, msgid, strlen(msgid), &ut, sizeof(struct UseTable) );
239 * Read the network map from its configuration file into memory.
241 void read_network_map(void) {
242 char *serialized_map = NULL;
247 serialized_map = CtdlGetSysConfig(IGNETMAP);
248 if (serialized_map == NULL) return; /* if null, no entries */
250 /* Use the string tokenizer to grab one line at a time */
251 for (i=0; i<num_tokens(serialized_map, '\n'); ++i) {
252 extract_token(buf, serialized_map, i, '\n', sizeof buf);
253 nmptr = (NetMap *) malloc(sizeof(NetMap));
254 extract_token(nmptr->nodename, buf, 0, '|', sizeof nmptr->nodename);
255 nmptr->lastcontact = extract_long(buf, 1);
256 extract_token(nmptr->nexthop, buf, 2, '|', sizeof nmptr->nexthop);
257 nmptr->next = the_netmap;
261 free(serialized_map);
267 * Write the network map from memory back to the configuration file.
269 void write_network_map(void) {
270 char *serialized_map = NULL;
274 if (netmap_changed) {
275 serialized_map = strdup("");
277 if (the_netmap != NULL) {
278 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
279 serialized_map = realloc(serialized_map,
280 (strlen(serialized_map)+SIZ) );
281 if (!IsEmptyStr(nmptr->nodename)) {
282 snprintf(&serialized_map[strlen(serialized_map)],
286 (long)nmptr->lastcontact,
292 CtdlPutSysConfig(IGNETMAP, serialized_map);
293 free(serialized_map);
296 /* Now free the list */
297 while (the_netmap != NULL) {
298 nmptr = the_netmap->next;
308 * Check the network map and determine whether the supplied node name is
309 * valid. If it is not a neighbor node, supply the name of a neighbor node
310 * which is the next hop. If it *is* a neighbor node, we also fill in the
313 int is_valid_node(char *nexthop, char *secret, char *node) {
325 * First try the neighbor nodes
327 if (working_ignetcfg == NULL) {
328 CtdlLogPrintf(CTDL_ERR, "working_ignetcfg is NULL!\n");
329 if (nexthop != NULL) {
336 if (nexthop != NULL) {
340 /* Use the string tokenizer to grab one line at a time */
341 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
342 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
343 extract_token(buf, linebuf, 0, '|', sizeof buf);
344 if (!strcasecmp(buf, node)) {
345 if (nexthop != NULL) {
348 if (secret != NULL) {
349 extract_token(secret, linebuf, 1, '|', 256);
356 return(retval); /* yup, it's a direct neighbor */
360 * If we get to this point we have to see if we know the next hop
362 if (the_netmap != NULL) {
363 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
364 if (!strcasecmp(nmptr->nodename, node)) {
365 if (nexthop != NULL) {
366 strcpy(nexthop, nmptr->nexthop);
374 * If we get to this point, the supplied node name is bogus.
376 CtdlLogPrintf(CTDL_ERR, "Invalid node name <%s>\n", node);
384 void cmd_gnet(char *argbuf) {
385 char filename[PATH_MAX];
389 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
390 /* users can edit the netconfigs for their own mailbox rooms */
392 else if (CtdlAccessCheck(ac_room_aide)) return;
394 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
395 cprintf("%d Network settings for room #%ld <%s>\n",
397 CC->room.QRnumber, CC->room.QRname);
399 fp = fopen(filename, "r");
401 while (fgets(buf, sizeof buf, fp) != NULL) {
402 buf[strlen(buf)-1] = 0;
403 cprintf("%s\n", buf);
412 void cmd_snet(char *argbuf) {
413 char tempfilename[PATH_MAX];
414 char filename[PATH_MAX];
423 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
424 /* users can edit the netconfigs for their own mailbox rooms */
426 else if (CtdlAccessCheck(ac_room_aide)) return;
428 len = assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
429 memcpy(tempfilename, filename, len + 1);
431 memset(&StatBuf, 0, sizeof(struct stat));
432 if ((stat(filename, &StatBuf) == -1) || (StatBuf.st_size == 0))
433 StatBuf.st_size = 80; /* Not there or empty? guess 80 chars line. */
435 sprintf(tempfilename + len, ".%d", CC->cs_pid);
437 TmpFD = open(tempfilename, O_CREAT|O_EXCL|O_RDWR, S_IRUSR|S_IWUSR);
439 if ((TmpFD > 0) && (errno == 0))
441 char *tmp = malloc(StatBuf.st_size * 2);
442 memset(tmp, ' ', StatBuf.st_size * 2);
443 rc = write(TmpFD, tmp, StatBuf.st_size * 2);
445 if ((rc <= 0) || (rc != StatBuf.st_size * 2))
448 cprintf("%d Unable to allocate the space required for %s: %s\n",
449 ERROR + INTERNAL_ERROR,
452 unlink(tempfilename);
455 lseek(TmpFD, SEEK_SET, 0);
458 cprintf("%d Unable to allocate the space required for %s: %s\n",
459 ERROR + INTERNAL_ERROR,
462 unlink(tempfilename);
467 cprintf("%d %s\n", SEND_LISTING, tempfilename);
470 while (rc = CtdlClientGetLine(Line),
473 if ((rc == 3) && (strcmp(ChrPtr(Line), "000") == 0))
475 StrBufAppendBufPlain(Line, HKEY("\n"), 0);
476 write(TmpFD, ChrPtr(Line), StrLength(Line));
477 len += StrLength(Line);
480 ftruncate(TmpFD, len);
483 /* Now copy the temp file to its permanent location.
484 * (We copy instead of link because they may be on different filesystems)
486 begin_critical_section(S_NETCONFIGS);
487 rename(tempfilename, filename);
488 end_critical_section(S_NETCONFIGS);
493 * Deliver digest messages
495 void network_deliver_digest(SpoolControl *sc) {
498 struct CtdlMessage *msg = NULL;
501 size_t recps_len = SIZ;
503 struct recptypes *valid;
507 if (sc->num_msgs_spooled < 1) {
508 fclose(sc->digestfp);
513 msg = malloc(sizeof(struct CtdlMessage));
514 memset(msg, 0, sizeof(struct CtdlMessage));
515 msg->cm_magic = CTDLMESSAGE_MAGIC;
516 msg->cm_format_type = FMT_RFC822;
517 msg->cm_anon_type = MES_NORMAL;
519 sprintf(buf, "%ld", time(NULL));
520 msg->cm_fields['T'] = strdup(buf);
521 msg->cm_fields['A'] = strdup(CC->room.QRname);
522 snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
523 msg->cm_fields['U'] = strdup(buf);
524 sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
525 for (i=0; buf[i]; ++i) {
526 if (isspace(buf[i])) buf[i]='_';
527 buf[i] = tolower(buf[i]);
529 msg->cm_fields['F'] = strdup(buf);
530 msg->cm_fields['R'] = strdup(buf);
532 /* Set the 'List-ID' header */
533 msg->cm_fields['L'] = malloc(1024);
534 snprintf(msg->cm_fields['L'], 1024,
535 "%s <%ld.list-id.%s>",
542 * Go fetch the contents of the digest
544 fseek(sc->digestfp, 0L, SEEK_END);
545 msglen = ftell(sc->digestfp);
547 msg->cm_fields['M'] = malloc(msglen + 1);
548 fseek(sc->digestfp, 0L, SEEK_SET);
549 siz = fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
550 msg->cm_fields['M'][msglen] = '\0';
552 fclose(sc->digestfp);
555 /* Now generate the delivery instructions */
558 * Figure out how big a buffer we need to allocate
560 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
561 recps_len = recps_len + strlen(nptr->name) + 2;
564 recps = malloc(recps_len);
567 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
574 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
575 if (nptr != sc->digestrecps) {
578 strcat(recps, nptr->name);
581 /* Where do we want bounces and other noise to be heard? Surely not the list members! */
582 snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
584 /* Now submit the message */
585 valid = validate_recipients(recps, NULL, 0);
588 valid->bounce_to = strdup(bounce_to);
589 valid->envelope_from = strdup(bounce_to);
590 CtdlSubmitMsg(msg, valid, NULL, 0);
592 CtdlFreeMessage(msg);
593 free_recipients(valid);
598 * Deliver list messages to everyone on the list ... efficiently
600 void network_deliver_list(struct CtdlMessage *msg, SpoolControl *sc) {
602 size_t recps_len = SIZ;
603 struct recptypes *valid;
607 /* Don't do this if there were no recipients! */
608 if (sc->listrecps == NULL) return;
610 /* Now generate the delivery instructions */
613 * Figure out how big a buffer we need to allocate
615 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
616 recps_len = recps_len + strlen(nptr->name) + 2;
619 recps = malloc(recps_len);
622 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
629 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
630 if (nptr != sc->listrecps) {
633 strcat(recps, nptr->name);
636 /* Where do we want bounces and other noise to be heard? Surely not the list members! */
637 snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
639 /* Now submit the message */
640 valid = validate_recipients(recps, NULL, 0);
643 valid->bounce_to = strdup(bounce_to);
644 valid->envelope_from = strdup(bounce_to);
645 CtdlSubmitMsg(msg, valid, NULL, 0);
646 free_recipients(valid);
648 /* Do not call CtdlFreeMessage(msg) here; the caller will free it. */
655 * Spools out one message from the list.
657 void network_spool_msg(long msgnum, void *userdata) {
660 char *newpath = NULL;
661 size_t instr_len = SIZ;
662 struct CtdlMessage *msg = NULL;
665 struct ser_ret sermsg;
667 char filename[PATH_MAX];
671 int delete_after_send = 0; /* Set to 1 to delete after spooling */
672 int ok_to_participate = 0;
673 struct recptypes *valid;
675 sc = (SpoolControl *)userdata;
678 * Process mailing list recipients
681 if (sc->listrecps != NULL) {
682 /* Fetch the message. We're going to need to modify it
683 * in order to insert the [list name] in it, etc.
685 msg = CtdlFetchMessage(msgnum, 1);
690 if (msg->cm_fields['V'] == NULL){
691 /* local message, no enVelope */
694 StrBufAppendBufPlain(Buf, msg->cm_fields['O'], -1, 0);
695 StrBufAppendBufPlain(Buf, HKEY("@"), 0);
696 StrBufAppendBufPlain(Buf, config.c_fqdn, -1, 0);
698 msg->cm_fields['K'] = SmashStrBuf(&Buf);
701 msg->cm_fields['K'] = strdup (msg->cm_fields['V']);
703 /* Set the 'List-ID' header */
704 if (msg->cm_fields['L'] != NULL) {
705 free(msg->cm_fields['L']);
707 msg->cm_fields['L'] = malloc(1024);
708 snprintf(msg->cm_fields['L'], 1024,
709 "%s <%ld.list-id.%s>",
715 /* Prepend "[List name]" to the subject */
716 if (msg->cm_fields['U'] == NULL) {
717 msg->cm_fields['U'] = strdup("(no subject)");
720 len = strlen(msg->cm_fields['U']);
721 pCh = strstr(msg->cm_fields['U'], CC->room.QRname);
723 (*(pCh + len) != ']') ||
724 (pCh == msg->cm_fields['U']) ||
730 rlen = strlen(CC->room.QRname);
732 pBuff = malloc (rlen * sizeof(char));
734 snprintf(pBuff, rlen, "[%s] %s", CC->room.QRname, msg->cm_fields['U']);
735 free(msg->cm_fields['U']);
736 msg->cm_fields['U'] = pBuff;
738 /* else we won't modify the buffer, since the roomname is already here. */
740 /* Set the recipient of the list message to the
741 * email address of the room itself.
742 * FIXME ... I want to be able to pick any address
744 if (msg->cm_fields['R'] != NULL) {
745 free(msg->cm_fields['R']);
747 msg->cm_fields['R'] = malloc(256);
748 snprintf(msg->cm_fields['R'], 256,
749 "room_%s@%s", CC->room.QRname,
751 for (i=0; msg->cm_fields['R'][i]; ++i) {
752 if (isspace(msg->cm_fields['R'][i])) {
753 msg->cm_fields['R'][i] = '_';
757 /* Handle delivery */
758 network_deliver_list(msg, sc);
759 CtdlFreeMessage(msg);
764 * Process digest recipients
766 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
767 msg = CtdlFetchMessage(msgnum, 1);
769 fprintf(sc->digestfp, " -----------------------------------"
770 "------------------------------------"
772 fprintf(sc->digestfp, "From: ");
773 if (msg->cm_fields['A'] != NULL) {
774 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
776 if (msg->cm_fields['F'] != NULL) {
777 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
779 else if (msg->cm_fields['N'] != NULL) {
780 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
782 fprintf(sc->digestfp, "\n");
783 if (msg->cm_fields['U'] != NULL) {
784 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
787 CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
789 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
790 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0, 0);
792 StrBufTrim(CC->redirect_buffer);
793 fwrite(HKEY("\n"), 1, sc->digestfp);
794 fwrite(SKEY(CC->redirect_buffer), 1, sc->digestfp);
795 fwrite(HKEY("\n"), 1, sc->digestfp);
797 FreeStrBuf(&CC->redirect_buffer);
799 sc->num_msgs_spooled += 1;
805 * Process client-side list participations for this room
808 if (sc->participates != NULL) {
809 msg = CtdlFetchMessage(msgnum, 1);
812 /* Only send messages which originated on our own Citadel
813 * network, otherwise we'll end up sending the remote
814 * mailing list's messages back to it, which is rude...
816 ok_to_participate = 0;
817 if (msg->cm_fields['N'] != NULL) {
818 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
819 ok_to_participate = 1;
821 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
822 ok_to_participate = 1;
825 if (ok_to_participate) {
826 if (msg->cm_fields['F'] != NULL) {
827 free(msg->cm_fields['F']);
829 msg->cm_fields['F'] = malloc(SIZ);
830 /* Replace the Internet email address of the actual
831 * author with the email address of the room itself,
832 * so the remote listserv doesn't reject us.
833 * FIXME ... I want to be able to pick any address
835 snprintf(msg->cm_fields['F'], SIZ,
836 "room_%s@%s", CC->room.QRname,
838 for (i=0; msg->cm_fields['F'][i]; ++i) {
839 if (isspace(msg->cm_fields['F'][i])) {
840 msg->cm_fields['F'][i] = '_';
845 * Figure out how big a buffer we need to allocate
847 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
849 if (msg->cm_fields['R'] == NULL) {
850 free(msg->cm_fields['R']);
852 msg->cm_fields['R'] = strdup(nptr->name);
854 valid = validate_recipients(nptr->name, NULL, 0);
855 CtdlSubmitMsg(msg, valid, "", 0);
856 free_recipients(valid);
860 CtdlFreeMessage(msg);
865 * Process IGnet push shares
867 msg = CtdlFetchMessage(msgnum, 1);
871 /* Prepend our node name to the Path field whenever
872 * sending a message to another IGnet node
874 if (msg->cm_fields['P'] == NULL) {
875 msg->cm_fields['P'] = strdup("username");
877 newpath_len = strlen(msg->cm_fields['P']) +
878 strlen(config.c_nodename) + 2;
879 newpath = malloc(newpath_len);
880 snprintf(newpath, newpath_len, "%s!%s",
881 config.c_nodename, msg->cm_fields['P']);
882 free(msg->cm_fields['P']);
883 msg->cm_fields['P'] = newpath;
886 * Determine if this message is set to be deleted
887 * after sending out on the network
889 if (msg->cm_fields['S'] != NULL) {
890 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
891 delete_after_send = 1;
895 /* Now send it to every node */
896 if (sc->ignet_push_shares != NULL)
897 for (mptr = sc->ignet_push_shares; mptr != NULL;
902 /* Check for valid node name */
903 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
904 CtdlLogPrintf(CTDL_ERR, "Invalid node <%s>\n", mptr->remote_nodename);
908 /* Check for split horizon */
909 CtdlLogPrintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
910 bang = num_tokens(msg->cm_fields['P'], '!');
911 if (bang > 1) for (i=0; i<(bang-1); ++i) {
912 extract_token(buf, msg->cm_fields['P'], i, '!', sizeof buf);
913 CtdlLogPrintf(CTDL_DEBUG, "Compare <%s> to <%s>\n",
914 buf, mptr->remote_nodename) ;
915 if (!strcasecmp(buf, mptr->remote_nodename)) {
917 CtdlLogPrintf(CTDL_DEBUG, "Not sending to %s\n",
918 mptr->remote_nodename);
921 CtdlLogPrintf(CTDL_DEBUG, "Sending to %s\n", mptr->remote_nodename);
925 /* Send the message */
929 * Force the message to appear in the correct room
930 * on the far end by setting the C field correctly
932 if (msg->cm_fields['C'] != NULL) {
933 free(msg->cm_fields['C']);
935 if (!IsEmptyStr(mptr->remote_roomname)) {
936 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
939 msg->cm_fields['C'] = strdup(CC->room.QRname);
942 /* serialize it for transmission */
943 serialize_message(&sermsg, msg);
944 if (sermsg.len > 0) {
946 /* write it to a spool file */
947 snprintf(filename, sizeof filename,"%s/%s@%lx%x",
949 mptr->remote_nodename,
953 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
954 fp = fopen(filename, "ab");
961 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
964 /* free the serialized version */
970 CtdlFreeMessage(msg);
973 /* update lastsent */
974 sc->lastsent = msgnum;
976 /* Delete this message if delete-after-send is set */
977 if (delete_after_send) {
978 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
984 int read_spoolcontrol_file(SpoolControl **scc, char *filename)
990 char roomname[ROOMNAMELEN];
993 int skipthisline = 0;
994 namelist *nptr = NULL;
995 maplist *mptr = NULL;
998 fp = fopen(filename, "r");
1002 sc = malloc(sizeof(SpoolControl));
1003 memset(sc, 0, sizeof(SpoolControl));
1006 while (fgets(buf, sizeof buf, fp) != NULL) {
1007 buf[strlen(buf)-1] = 0;
1009 extract_token(instr, buf, 0, '|', sizeof instr);
1010 if (!strcasecmp(instr, strof(lastsent))) {
1011 sc->lastsent = extract_long(buf, 1);
1013 else if (!strcasecmp(instr, strof(listrecp))) {
1015 malloc(sizeof(namelist));
1016 nptr->next = sc->listrecps;
1017 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
1018 sc->listrecps = nptr;
1020 else if (!strcasecmp(instr, strof(participate))) {
1022 malloc(sizeof(namelist));
1023 nptr->next = sc->participates;
1024 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
1025 sc->participates = nptr;
1027 else if (!strcasecmp(instr, strof(digestrecp))) {
1029 malloc(sizeof(namelist));
1030 nptr->next = sc->digestrecps;
1031 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
1032 sc->digestrecps = nptr;
1034 else if (!strcasecmp(instr, strof(ignet_push_share))) {
1035 extract_token(nodename, buf, 1, '|', sizeof nodename);
1036 extract_token(roomname, buf, 2, '|', sizeof roomname);
1037 mptr = (maplist *) malloc(sizeof(maplist));
1038 mptr->next = sc->ignet_push_shares;
1039 strcpy(mptr->remote_nodename, nodename);
1040 strcpy(mptr->remote_roomname, roomname);
1041 sc->ignet_push_shares = mptr;
1044 /* Preserve 'other' lines ... *unless* they happen to
1045 * be subscribe/unsubscribe pendings with expired
1049 if (!strncasecmp(buf, strof(subpending)"|", 11)) {
1050 if (time(NULL) - extract_long(buf, 4) > EXP) {
1054 if (!strncasecmp(buf, strof(unsubpending)"|", 13)) {
1055 if (time(NULL) - extract_long(buf, 3) > EXP) {
1060 if (skipthisline == 0) {
1061 linesize = strlen(buf);
1062 sc->misc = realloc(sc->misc,
1063 (miscsize + linesize + 2) );
1064 sprintf(&sc->misc[miscsize], "%s\n", buf);
1065 miscsize = miscsize + linesize + 1;
1075 void free_spoolcontrol_struct(SpoolControl **scc)
1078 namelist *nptr = NULL;
1079 maplist *mptr = NULL;
1082 while (sc->listrecps != NULL) {
1083 nptr = sc->listrecps->next;
1084 free(sc->listrecps);
1085 sc->listrecps = nptr;
1087 /* Do the same for digestrecps */
1088 while (sc->digestrecps != NULL) {
1089 nptr = sc->digestrecps->next;
1090 free(sc->digestrecps);
1091 sc->digestrecps = nptr;
1093 /* Do the same for participates */
1094 while (sc->participates != NULL) {
1095 nptr = sc->participates->next;
1096 free(sc->participates);
1097 sc->participates = nptr;
1099 while (sc->ignet_push_shares != NULL) {
1100 mptr = sc->ignet_push_shares->next;
1101 free(sc->ignet_push_shares);
1102 sc->ignet_push_shares = mptr;
1109 int writenfree_spoolcontrol_file(SpoolControl **scc, char *filename)
1111 char tempfilename[PATH_MAX];
1114 namelist *nptr = NULL;
1115 maplist *mptr = NULL;
1119 long reltid; /* if we don't have SYS_gettid, use "random" value */
1123 len = strlen(filename);
1124 memcpy(tempfilename, filename, len + 1);
1127 #if defined(HAVE_SYSCALL_H) && defined (SYS_gettid)
1128 reltid = syscall(SYS_gettid);
1130 gettimeofday(&tv, NULL);
1131 /* Promote to time_t; types differ on some OSes (like darwin) */
1132 unixtime = tv.tv_sec;
1134 sprintf(tempfilename + len, ".%ld-%ld", reltid, unixtime);
1137 TmpFD = open(tempfilename, O_CREAT|O_EXCL|O_RDWR, S_IRUSR|S_IWUSR);
1139 if ((TmpFD < 0) || (errno != 0)) {
1140 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
1141 filename, strerror(errno));
1142 free_spoolcontrol_struct(scc);
1143 unlink(tempfilename);
1146 StrBufAppendPrintf(Cfg, "lastsent|%ld\n", sc->lastsent);
1148 /* Write out the listrecps while freeing from memory at the
1149 * same time. Am I clever or what? :)
1151 while (sc->listrecps != NULL) {
1152 StrBufAppendPrintf(Cfg, "listrecp|%s\n", sc->listrecps->name);
1153 nptr = sc->listrecps->next;
1154 free(sc->listrecps);
1155 sc->listrecps = nptr;
1157 /* Do the same for digestrecps */
1158 while (sc->digestrecps != NULL) {
1159 StrBufAppendPrintf(Cfg, "digestrecp|%s\n", sc->digestrecps->name);
1160 nptr = sc->digestrecps->next;
1161 free(sc->digestrecps);
1162 sc->digestrecps = nptr;
1164 /* Do the same for participates */
1165 while (sc->participates != NULL) {
1166 StrBufAppendPrintf(Cfg, "participate|%s\n", sc->participates->name);
1167 nptr = sc->participates->next;
1168 free(sc->participates);
1169 sc->participates = nptr;
1171 while (sc->ignet_push_shares != NULL) {
1172 StrBufAppendPrintf(Cfg, "ignet_push_share|%s", sc->ignet_push_shares->remote_nodename);
1173 if (!IsEmptyStr(sc->ignet_push_shares->remote_roomname)) {
1174 StrBufAppendPrintf(Cfg, "|%s", sc->ignet_push_shares->remote_roomname);
1176 StrBufAppendPrintf(Cfg, "\n");
1177 mptr = sc->ignet_push_shares->next;
1178 free(sc->ignet_push_shares);
1179 sc->ignet_push_shares = mptr;
1181 if (sc->misc != NULL) {
1182 StrBufAppendBufPlain(Cfg, sc->misc, -1, 0);
1186 rc = write(TmpFD, ChrPtr(Cfg), StrLength(Cfg));
1187 if ((rc >=0 ) && (rc == StrLength(Cfg)))
1190 rename(tempfilename, filename);
1193 CtdlLogPrintf(CTDL_EMERG,
1194 "unable to write %s; [%s]; not enough space on the disk?\n",
1198 unlink(tempfilename);
1206 int is_recipient(SpoolControl *sc, const char *Name)
1212 nptr = sc->listrecps;
1213 while (nptr != NULL) {
1214 if (strncmp(Name, nptr->name, len)==0)
1218 /* Do the same for digestrecps */
1219 nptr = sc->digestrecps;
1220 while (nptr != NULL) {
1221 if (strncmp(Name, nptr->name, len)==0)
1225 /* Do the same for participates */
1226 nptr = sc->participates;
1227 while (nptr != NULL) {
1228 if (strncmp(Name, nptr->name, len)==0)
1237 * Batch up and send all outbound traffic from the current room
1239 void network_spoolout_room(char *room_to_spool) {
1241 char filename[PATH_MAX];
1246 * If the room doesn't exist, don't try to perform its networking tasks.
1247 * Normally this should never happen, but once in a while maybe a room gets
1248 * queued for networking and then deleted before it can happen.
1250 if (CtdlGetRoom(&CC->room, room_to_spool) != 0) {
1251 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
1255 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1256 begin_critical_section(S_NETCONFIGS);
1258 /* Only do net processing for rooms that have netconfigs */
1259 if (!read_spoolcontrol_file(&sc, filename))
1261 end_critical_section(S_NETCONFIGS);
1264 CtdlLogPrintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
1266 /* If there are digest recipients, we have to build a digest */
1267 if (sc->digestrecps != NULL) {
1268 sc->digestfp = tmpfile();
1269 fprintf(sc->digestfp, "Content-type: text/plain\n\n");
1272 /* Do something useful */
1273 CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
1274 network_spool_msg, sc);
1276 /* If we wrote a digest, deliver it and then close it */
1277 snprintf(buf, sizeof buf, "room_%s@%s",
1278 CC->room.QRname, config.c_fqdn);
1279 for (i=0; buf[i]; ++i) {
1280 buf[i] = tolower(buf[i]);
1281 if (isspace(buf[i])) buf[i] = '_';
1283 if (sc->digestfp != NULL) {
1284 fprintf(sc->digestfp, " -----------------------------------"
1285 "------------------------------------"
1287 "You are subscribed to the '%s' "
1289 "To post to the list: %s\n",
1290 CC->room.QRname, buf
1292 network_deliver_digest(sc); /* deliver and close */
1295 /* Now rewrite the config file */
1296 writenfree_spoolcontrol_file (&sc, filename);
1297 end_critical_section(S_NETCONFIGS);
1303 * Send the *entire* contents of the current room to one specific network node,
1304 * ignoring anything we know about which messages have already undergone
1305 * network processing. This can be used to bring a new node into sync.
1307 int network_sync_to(char *target_node) {
1309 int num_spooled = 0;
1315 char filename[PATH_MAX];
1318 /* Grab the configuration line we're looking for */
1319 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1320 begin_critical_section(S_NETCONFIGS);
1321 fp = fopen(filename, "r");
1323 end_critical_section(S_NETCONFIGS);
1326 while (fgets(buf, sizeof buf, fp) != NULL) {
1327 buf[strlen(buf)-1] = 0;
1328 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1329 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1330 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1331 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1332 && (!strcasecmp(sc_node, target_node)) ) {
1335 /* Concise syntax because we don't need a full linked-list */
1336 memset(&sc, 0, sizeof(SpoolControl));
1337 sc.ignet_push_shares = (maplist *)
1338 malloc(sizeof(maplist));
1339 sc.ignet_push_shares->next = NULL;
1340 safestrncpy(sc.ignet_push_shares->remote_nodename,
1342 sizeof sc.ignet_push_shares->remote_nodename);
1343 safestrncpy(sc.ignet_push_shares->remote_roomname,
1345 sizeof sc.ignet_push_shares->remote_roomname);
1349 end_critical_section(S_NETCONFIGS);
1351 if (!found_node) return(-1);
1353 /* Send ALL messages */
1354 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
1355 network_spool_msg, &sc);
1357 /* Concise cleanup because we know there's only one node in the sc */
1358 free(sc.ignet_push_shares);
1360 CtdlLogPrintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1361 num_spooled, target_node);
1362 return(num_spooled);
1367 * Implements the NSYN command
1369 void cmd_nsyn(char *argbuf) {
1371 char target_node[256];
1373 if (CtdlAccessCheck(ac_aide)) return;
1375 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1376 num_spooled = network_sync_to(target_node);
1377 if (num_spooled >= 0) {
1378 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1381 cprintf("%d No such room/node share exists.\n",
1382 ERROR + ROOM_NOT_FOUND);
1389 * Batch up and send all outbound traffic from the current room
1391 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1392 struct RoomProcList *ptr;
1394 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1395 if (ptr == NULL) return;
1397 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1398 begin_critical_section(S_RPLIST);
1401 end_critical_section(S_RPLIST);
1404 void destroy_network_queue_room(void)
1406 struct RoomProcList *cur, *p;
1407 NetMap *nmcur, *nmp;
1410 begin_critical_section(S_RPLIST);
1418 end_critical_section(S_RPLIST);
1421 while (nmcur != NULL)
1428 if (working_ignetcfg != NULL)
1429 free (working_ignetcfg);
1430 working_ignetcfg = NULL;
1435 * Learn topology from path fields
1437 void network_learn_topology(char *node, char *path) {
1441 strcpy(nexthop, "");
1443 if (num_tokens(path, '!') < 3) return;
1444 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1445 if (!strcasecmp(nmptr->nodename, node)) {
1446 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1447 nmptr->lastcontact = time(NULL);
1453 /* If we got here then it's not in the map, so add it. */
1454 nmptr = (NetMap *) malloc(sizeof (NetMap));
1455 strcpy(nmptr->nodename, node);
1456 nmptr->lastcontact = time(NULL);
1457 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1458 nmptr->next = the_netmap;
1467 * Bounce a message back to the sender
1469 void network_bounce(struct CtdlMessage *msg, char *reason) {
1470 char *oldpath = NULL;
1472 char bouncesource[SIZ];
1473 char recipient[SIZ];
1474 struct recptypes *valid = NULL;
1475 char force_room[ROOMNAMELEN];
1476 static int serialnum = 0;
1479 CtdlLogPrintf(CTDL_DEBUG, "entering network_bounce()\n");
1481 if (msg == NULL) return;
1483 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1486 * Give it a fresh message ID
1488 if (msg->cm_fields['I'] != NULL) {
1489 free(msg->cm_fields['I']);
1491 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1492 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1493 msg->cm_fields['I'] = strdup(buf);
1496 * FIXME ... right now we're just sending a bounce; we really want to
1497 * include the text of the bounced message.
1499 if (msg->cm_fields['M'] != NULL) {
1500 free(msg->cm_fields['M']);
1502 msg->cm_fields['M'] = strdup(reason);
1503 msg->cm_format_type = 0;
1506 * Turn the message around
1508 if (msg->cm_fields['R'] == NULL) {
1509 free(msg->cm_fields['R']);
1512 if (msg->cm_fields['D'] == NULL) {
1513 free(msg->cm_fields['D']);
1516 snprintf(recipient, sizeof recipient, "%s@%s",
1517 msg->cm_fields['A'], msg->cm_fields['N']);
1519 if (msg->cm_fields['A'] == NULL) {
1520 free(msg->cm_fields['A']);
1523 if (msg->cm_fields['N'] == NULL) {
1524 free(msg->cm_fields['N']);
1527 if (msg->cm_fields['U'] == NULL) {
1528 free(msg->cm_fields['U']);
1531 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1532 msg->cm_fields['N'] = strdup(config.c_nodename);
1533 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1535 /* prepend our node to the path */
1536 if (msg->cm_fields['P'] != NULL) {
1537 oldpath = msg->cm_fields['P'];
1538 msg->cm_fields['P'] = NULL;
1541 oldpath = strdup("unknown_user");
1543 size = strlen(oldpath) + SIZ;
1544 msg->cm_fields['P'] = malloc(size);
1545 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1548 /* Now submit the message */
1549 valid = validate_recipients(recipient, NULL, 0);
1550 if (valid != NULL) if (valid->num_error != 0) {
1551 free_recipients(valid);
1554 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1555 strcpy(force_room, config.c_aideroom);
1558 strcpy(force_room, "");
1560 if ( (valid == NULL) && IsEmptyStr(force_room) ) {
1561 strcpy(force_room, config.c_aideroom);
1563 CtdlSubmitMsg(msg, valid, force_room, 0);
1566 if (valid != NULL) free_recipients(valid);
1567 CtdlFreeMessage(msg);
1568 CtdlLogPrintf(CTDL_DEBUG, "leaving network_bounce()\n");
1575 * Process a buffer containing a single message from a single file
1576 * from the inbound queue
1578 void network_process_buffer(char *buffer, long size) {
1579 struct CtdlMessage *msg = NULL;
1582 struct recptypes *recp = NULL;
1583 char target_room[ROOMNAMELEN];
1584 struct ser_ret sermsg;
1585 char *oldpath = NULL;
1586 char filename[PATH_MAX];
1589 unsigned char firstbyte;
1590 unsigned char lastbyte;
1592 CtdlLogPrintf(CTDL_DEBUG, "network_process_buffer() processing %ld bytes\n", size);
1594 /* Validate just a little bit. First byte should be FF and * last byte should be 00. */
1595 firstbyte = buffer[0];
1596 lastbyte = buffer[size-1];
1597 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1598 CtdlLogPrintf(CTDL_ERR, "Corrupt message ignored. Length=%ld, firstbyte = %d, lastbyte = %d\n",
1599 size, firstbyte, lastbyte);
1603 /* Set default target room to trash */
1604 strcpy(target_room, TWITROOM);
1606 /* Load the message into memory */
1607 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1608 memset(msg, 0, sizeof(struct CtdlMessage));
1609 msg->cm_magic = CTDLMESSAGE_MAGIC;
1610 msg->cm_anon_type = buffer[1];
1611 msg->cm_format_type = buffer[2];
1613 for (pos = 3; pos < size; ++pos) {
1614 field = buffer[pos];
1615 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1616 pos = pos + strlen(&buffer[(int)pos]);
1619 /* Check for message routing */
1620 if (msg->cm_fields['D'] != NULL) {
1621 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1623 /* route the message */
1624 strcpy(nexthop, "");
1625 if (is_valid_node(nexthop, NULL, msg->cm_fields['D']) == 0) {
1626 /* prepend our node to the path */
1627 if (msg->cm_fields['P'] != NULL) {
1628 oldpath = msg->cm_fields['P'];
1629 msg->cm_fields['P'] = NULL;
1632 oldpath = strdup("unknown_user");
1634 size = strlen(oldpath) + SIZ;
1635 msg->cm_fields['P'] = malloc(size);
1636 snprintf(msg->cm_fields['P'], size, "%s!%s",
1637 config.c_nodename, oldpath);
1640 /* serialize the message */
1641 serialize_message(&sermsg, msg);
1644 if (IsEmptyStr(nexthop)) {
1645 strcpy(nexthop, msg->cm_fields['D']);
1655 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
1656 fp = fopen(filename, "ab");
1658 fwrite(sermsg.ser, sermsg.len, 1, fp);
1662 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1665 CtdlFreeMessage(msg);
1669 else { /* invalid destination node name */
1672 "A message you sent could not be delivered due to an invalid destination node"
1673 " name. Please check the address and try sending the message again.\n");
1682 * Check to see if we already have a copy of this message, and
1683 * abort its processing if so. (We used to post a warning to Aide>
1684 * every time this happened, but the network is now so densely
1685 * connected that it's inevitable.)
1687 if (network_usetable(msg) != 0) {
1688 CtdlFreeMessage(msg);
1692 /* Learn network topology from the path */
1693 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1694 network_learn_topology(msg->cm_fields['N'], msg->cm_fields['P']);
1697 /* Is the sending node giving us a very persuasive suggestion about
1698 * which room this message should be saved in? If so, go with that.
1700 if (msg->cm_fields['C'] != NULL) {
1701 safestrncpy(target_room, msg->cm_fields['C'], sizeof target_room);
1704 /* Otherwise, does it have a recipient? If so, validate it... */
1705 else if (msg->cm_fields['R'] != NULL) {
1706 recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
1707 if (recp != NULL) if (recp->num_error != 0) {
1709 "A message you sent could not be delivered due to an invalid address.\n"
1710 "Please check the address and try sending the message again.\n");
1712 free_recipients(recp);
1713 CtdlLogPrintf(CTDL_DEBUG, "Bouncing message due to invalid recipient address.\n");
1716 strcpy(target_room, ""); /* no target room if mail */
1719 /* Our last shot at finding a home for this message is to see if
1720 * it has the O field (Originating room) set.
1722 else if (msg->cm_fields['O'] != NULL) {
1723 safestrncpy(target_room, msg->cm_fields['O'], sizeof target_room);
1726 /* Strip out fields that are only relevant during transit */
1727 if (msg->cm_fields['D'] != NULL) {
1728 free(msg->cm_fields['D']);
1729 msg->cm_fields['D'] = NULL;
1731 if (msg->cm_fields['C'] != NULL) {
1732 free(msg->cm_fields['C']);
1733 msg->cm_fields['C'] = NULL;
1736 /* save the message into a room */
1737 if (PerformNetprocHooks(msg, target_room) == 0) {
1738 msg->cm_flags = CM_SKIP_HOOKS;
1739 CtdlSubmitMsg(msg, recp, target_room, 0);
1741 CtdlFreeMessage(msg);
1742 free_recipients(recp);
1747 * Process a single message from a single file from the inbound queue
1749 void network_process_message(FILE *fp, long msgstart, long msgend) {
1754 hold_pos = ftell(fp);
1755 size = msgend - msgstart + 1;
1756 buffer = malloc(size);
1757 if (buffer != NULL) {
1758 fseek(fp, msgstart, SEEK_SET);
1759 if (fread(buffer, size, 1, fp) > 0) {
1760 network_process_buffer(buffer, size);
1765 fseek(fp, hold_pos, SEEK_SET);
1770 * Process a single file from the inbound queue
1772 void network_process_file(char *filename) {
1774 long msgstart = (-1L);
1775 long msgend = (-1L);
1780 fp = fopen(filename, "rb");
1782 CtdlLogPrintf(CTDL_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
1786 fseek(fp, 0L, SEEK_END);
1787 CtdlLogPrintf(CTDL_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
1790 /* Look for messages in the data stream and break them out */
1791 while (ch = getc(fp), ch >= 0) {
1794 if (msgstart >= 0L) {
1795 msgend = msgcur - 1;
1796 network_process_message(fp, msgstart, msgend);
1804 msgend = msgcur - 1;
1805 if (msgstart >= 0L) {
1806 network_process_message(fp, msgstart, msgend);
1815 * Process anything in the inbound queue
1817 void network_do_spoolin(void) {
1820 struct stat statbuf;
1821 char filename[PATH_MAX];
1822 static time_t last_spoolin_mtime = 0L;
1825 * Check the spoolin directory's modification time. If it hasn't
1826 * been touched, we don't need to scan it.
1828 if (stat(ctdl_netin_dir, &statbuf)) return;
1829 if (statbuf.st_mtime == last_spoolin_mtime) {
1830 CtdlLogPrintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1833 last_spoolin_mtime = statbuf.st_mtime;
1834 CtdlLogPrintf(CTDL_DEBUG, "network: processing inbound queue\n");
1837 * Ok, there's something interesting in there, so scan it.
1839 dp = opendir(ctdl_netin_dir);
1840 if (dp == NULL) return;
1842 while (d = readdir(dp), d != NULL) {
1843 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1850 network_process_file(filename);
1858 * Step 1: consolidate files in the outbound queue into one file per neighbor node
1859 * Step 2: delete any files in the outbound queue that were for neighbors who no longer exist.
1861 void network_consolidate_spoolout(void) {
1864 char filename[PATH_MAX];
1870 /* Step 1: consolidate files in the outbound queue into one file per neighbor node */
1871 dp = opendir(ctdl_netout_dir);
1872 if (dp == NULL) return;
1873 while (d = readdir(dp), d != NULL) {
1875 (strcmp(d->d_name, "."))
1876 && (strcmp(d->d_name, ".."))
1877 && (strchr(d->d_name, '@') != NULL)
1879 safestrncpy(nexthop, d->d_name, sizeof nexthop);
1880 ptr = strchr(nexthop, '@');
1890 CtdlLogPrintf(CTDL_DEBUG, "Consolidate %s to %s\n", filename, nexthop);
1891 if (network_talking_to(nexthop, NTT_CHECK)) {
1892 CtdlLogPrintf(CTDL_DEBUG,
1893 "Currently online with %s - skipping for now\n",
1898 network_talking_to(nexthop, NTT_ADD);
1899 snprintf(cmd, sizeof cmd, "/bin/cat %s >>%s/%s && /bin/rm -f %s",
1901 ctdl_netout_dir, nexthop,
1905 network_talking_to(nexthop, NTT_REMOVE);
1911 /* Step 2: delete any files in the outbound queue that were for neighbors who no longer exist */
1913 dp = opendir(ctdl_netout_dir);
1914 if (dp == NULL) return;
1916 while (d = readdir(dp), d != NULL) {
1917 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1919 ptr = strchr(d->d_name, '@');
1929 strcpy(nexthop, "");
1930 i = is_valid_node(nexthop, NULL, d->d_name);
1932 if ( (i != 0) || !IsEmptyStr(nexthop) ) {
1943 * receive network spool from the remote system
1945 void receive_spool(int *sock, char *remote_nodename) {
1946 int download_len = 0L;
1947 int bytes_received = 0L;
1949 char tempfilename[PATH_MAX];
1950 char permfilename[PATH_MAX];
1954 snprintf(tempfilename,
1955 sizeof tempfilename,
1963 snprintf(permfilename,
1964 sizeof permfilename,
1972 if (sock_puts(sock, "NDOP") < 0) return;
1973 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1974 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1975 if (buf[0] != '2') {
1979 download_len = extract_long(&buf[4], 0);
1980 if (download_len <= 0) {
1984 bytes_received = 0L;
1985 fp = fopen(tempfilename, "w");
1987 CtdlLogPrintf(CTDL_CRIT, "Cannot create %s: %s\n", tempfilename, strerror(errno));
1991 CtdlLogPrintf(CTDL_DEBUG, "Expecting to transfer %d bytes\n", download_len);
1992 while (bytes_received < download_len) {
1994 * If shutting down we can exit here and unlink the temp file.
1995 * this shouldn't loose us any messages.
1997 if (CtdlThreadCheckStop())
2000 unlink(tempfilename);
2003 snprintf(buf, sizeof buf, "READ %d|%d",
2005 ((download_len - bytes_received > IGNET_PACKET_SIZE)
2006 ? IGNET_PACKET_SIZE : (download_len - bytes_received))
2009 if (sock_puts(sock, buf) < 0) {
2011 unlink(tempfilename);
2014 if (sock_getln(sock, buf, sizeof buf) < 0) {
2016 unlink(tempfilename);
2020 if (buf[0] == '6') {
2021 plen = extract_int(&buf[4], 0);
2022 StrBuf *pbuf = NewStrBuf();
2023 if (socket_read_blob(sock, pbuf, plen, CLIENT_TIMEOUT) != plen) {
2024 CtdlLogPrintf(CTDL_INFO, "Short read from peer; aborting.\n");
2026 unlink(tempfilename);
2030 fwrite(ChrPtr(pbuf), plen, 1, fp);
2031 bytes_received += plen;
2038 /* Last chance for shutdown exit */
2039 if (CtdlThreadCheckStop())
2041 unlink(tempfilename);
2045 if (sock_puts(sock, "CLOS") < 0) {
2046 unlink(tempfilename);
2051 * From here on we must complete or messages will get lost
2053 if (sock_getln(sock, buf, sizeof buf) < 0) {
2054 unlink(tempfilename);
2058 CtdlLogPrintf(CTDL_DEBUG, "%s\n", buf);
2061 * Now move the temp file to its permanent location.
2063 if (link(tempfilename, permfilename) != 0) {
2064 CtdlLogPrintf(CTDL_ALERT, "Could not link %s to %s: %s\n",
2065 tempfilename, permfilename, strerror(errno)
2069 unlink(tempfilename);
2075 * transmit network spool to the remote system
2077 void transmit_spool(int *sock, char *remote_nodename)
2082 long bytes_to_write, thisblock, bytes_written;
2086 if (sock_puts(sock, "NUOP") < 0) return;
2087 if (sock_getln(sock, buf, sizeof buf) < 0) return;
2088 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2089 if (buf[0] != '2') {
2093 snprintf(sfname, sizeof sfname,
2098 fd = open(sfname, O_RDONLY);
2100 if (errno != ENOENT) {
2101 CtdlLogPrintf(CTDL_CRIT, "cannot open %s: %s\n", sfname, strerror(errno));
2106 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
2107 bytes_to_write = plen;
2108 while (bytes_to_write > 0L) {
2109 /* Exit if shutting down */
2110 if (CtdlThreadCheckStop())
2116 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
2117 if (sock_puts(sock, buf) < 0) {
2121 if (sock_getln(sock, buf, sizeof buf) < 0) {
2125 thisblock = atol(&buf[4]);
2126 if (buf[0] == '7') {
2127 if (sock_write(sock, pbuf, (int) thisblock) < 0) {
2131 bytes_to_write -= thisblock;
2132 bytes_written += thisblock;
2142 /* Last chance for shutdown exit */
2143 if(CtdlThreadCheckStop())
2146 if (sock_puts(sock, "UCLS 1") < 0) return;
2149 * From here on we must complete or messages will get lost
2151 if (sock_getln(sock, buf, sizeof buf) < 0) return;
2152 CtdlLogPrintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n", bytes_written, remote_nodename);
2153 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2154 if (buf[0] == '2') {
2155 CtdlLogPrintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
2163 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
2165 void network_poll_node(char *node, char *secret, char *host, char *port) {
2169 char connected_to[SIZ];
2172 if (network_talking_to(node, NTT_CHECK)) return;
2173 network_talking_to(node, NTT_ADD);
2174 CtdlLogPrintf(CTDL_DEBUG, "network: polling <%s>\n", node);
2175 CtdlLogPrintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
2177 sock = sock_connect(host, port, "tcp");
2179 CtdlLogPrintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
2180 network_talking_to(node, NTT_REMOVE);
2184 CtdlLogPrintf(CTDL_DEBUG, "Connected!\n");
2185 CCC->sReadBuf = NewStrBuf();
2186 CCC->sMigrateBuf = NewStrBuf();
2189 /* Read the server greeting */
2190 if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
2191 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2193 /* Check that the remote is who we think it is and warn the Aide if not */
2194 extract_token (connected_to, buf, 1, ' ', sizeof connected_to);
2195 if (strcmp(connected_to, node))
2197 snprintf(err_buf, sizeof(err_buf),
2198 "Connected to node \"%s\" but I was expecting to connect to node \"%s\".",
2201 CtdlLogPrintf(CTDL_ERR, "%s\n", err_buf);
2202 CtdlAideMessage(err_buf, "Network error");
2205 /* We're talking to the correct node. Now identify ourselves. */
2206 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
2207 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2208 if (sock_puts(&sock, buf) <0) goto bail;
2209 if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
2210 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2211 if (buf[0] != '2') {
2215 /* At this point we are authenticated. */
2216 if (!CtdlThreadCheckStop())
2217 receive_spool(&sock, node);
2218 if (!CtdlThreadCheckStop())
2219 transmit_spool(&sock, node);
2222 sock_puts(&sock, "QUIT");
2224 FreeStrBuf(&CCC->sReadBuf);
2225 FreeStrBuf(&CCC->sMigrateBuf);
2228 network_talking_to(node, NTT_REMOVE);
2234 * Poll other Citadel nodes and transfer inbound/outbound network data.
2235 * Set "full" to nonzero to force a poll of every node, or to zero to poll
2236 * only nodes to which we have data to send.
2238 void network_poll_other_citadel_nodes(int full_poll) {
2246 char spoolfile[256];
2248 if (working_ignetcfg == NULL) {
2249 CtdlLogPrintf(CTDL_DEBUG, "network: no neighbor nodes are configured - not polling.\n");
2253 /* Use the string tokenizer to grab one line at a time */
2254 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
2255 if(CtdlThreadCheckStop())
2257 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
2258 extract_token(node, linebuf, 0, '|', sizeof node);
2259 extract_token(secret, linebuf, 1, '|', sizeof secret);
2260 extract_token(host, linebuf, 2, '|', sizeof host);
2261 extract_token(port, linebuf, 3, '|', sizeof port);
2262 if ( !IsEmptyStr(node) && !IsEmptyStr(secret)
2263 && !IsEmptyStr(host) && !IsEmptyStr(port)) {
2272 if (access(spoolfile, R_OK) == 0) {
2277 network_poll_node(node, secret, host, port);
2288 * It's ok if these directories already exist. Just fail silently.
2290 void create_spool_dirs(void) {
2291 if ((mkdir(ctdl_spool_dir, 0700) != 0) && (errno != EEXIST))
2292 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_spool_dir, strerror(errno));
2293 if (chown(ctdl_spool_dir, CTDLUID, (-1)) != 0)
2294 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_spool_dir, strerror(errno));
2295 if ((mkdir(ctdl_netin_dir, 0700) != 0) && (errno != EEXIST))
2296 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_netin_dir, strerror(errno));
2297 if (chown(ctdl_netin_dir, CTDLUID, (-1)) != 0)
2298 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netin_dir, strerror(errno));
2299 if ((mkdir(ctdl_nettmp_dir, 0700) != 0) && (errno != EEXIST))
2300 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_nettmp_dir, strerror(errno));
2301 if (chown(ctdl_nettmp_dir, CTDLUID, (-1)) != 0)
2302 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_nettmp_dir, strerror(errno));
2303 if ((mkdir(ctdl_netout_dir, 0700) != 0) && (errno != EEXIST))
2304 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_netout_dir, strerror(errno));
2305 if (chown(ctdl_netout_dir, CTDLUID, (-1)) != 0)
2306 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netout_dir, strerror(errno));
2314 * network_do_queue()
2316 * Run through the rooms doing various types of network stuff.
2318 void *network_do_queue(void *args) {
2319 static time_t last_run = 0L;
2320 struct RoomProcList *ptr;
2321 int full_processing = 1;
2322 struct CitContext networkerCC;
2324 /* Give the networker its own private CitContext */
2325 CtdlFillSystemContext(&networkerCC, "network");
2326 citthread_setspecific(MyConKey, (void *)&networkerCC );
2329 * Run the full set of processing tasks no more frequently
2330 * than once every n seconds
2332 if ( (time(NULL) - last_run) < config.c_net_freq ) {
2333 full_processing = 0;
2334 CtdlLogPrintf(CTDL_DEBUG, "Network full processing in %ld seconds.\n",
2335 config.c_net_freq - (time(NULL)- last_run)
2340 * This is a simple concurrency check to make sure only one queue run
2341 * is done at a time. We could do this with a mutex, but since we
2342 * don't really require extremely fine granularity here, we'll do it
2343 * with a static variable instead.
2346 CtdlClearSystemContext();
2351 /* Load the IGnet Configuration into memory */
2352 load_working_ignetcfg();
2355 * Poll other Citadel nodes. Maybe. If "full_processing" is set
2356 * then we poll everyone. Otherwise we only poll nodes we have stuff
2359 network_poll_other_citadel_nodes(full_processing);
2362 * Load the network map and filter list into memory.
2365 filterlist = load_filter_list();
2368 * Go ahead and run the queue
2370 if (full_processing && !CtdlThreadCheckStop()) {
2371 CtdlLogPrintf(CTDL_DEBUG, "network: loading outbound queue\n");
2372 CtdlForEachRoom(network_queue_room, NULL);
2375 if (rplist != NULL) {
2376 CtdlLogPrintf(CTDL_DEBUG, "network: running outbound queue\n");
2377 while (rplist != NULL && !CtdlThreadCheckStop()) {
2378 char spoolroomname[ROOMNAMELEN];
2379 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
2380 begin_critical_section(S_RPLIST);
2382 /* pop this record off the list */
2384 rplist = rplist->next;
2387 /* invalidate any duplicate entries to prevent double processing */
2388 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
2389 if (!strcasecmp(ptr->name, spoolroomname)) {
2394 end_critical_section(S_RPLIST);
2395 if (spoolroomname[0] != 0) {
2396 network_spoolout_room(spoolroomname);
2401 /* If there is anything in the inbound queue, process it */
2402 if (!CtdlThreadCheckStop()) {
2403 network_do_spoolin();
2406 /* Save the network map back to disk */
2407 write_network_map();
2409 /* Free the filter list in memory */
2410 free_filter_list(filterlist);
2413 network_consolidate_spoolout();
2415 CtdlLogPrintf(CTDL_DEBUG, "network: queue run completed\n");
2417 if (full_processing) {
2418 last_run = time(NULL);
2423 /* Reschedule this task to happen again periodically, unless the thread system indicates
2424 * that the server is shutting down.
2426 if (!CtdlThreadCheckStop()) {
2427 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK,
2428 network_do_queue, NULL, time(NULL) + 60
2432 CtdlLogPrintf(CTDL_DEBUG, "network: Task STOPPED.\n");
2434 CtdlClearSystemContext();
2440 * cmd_netp() - authenticate to the server as another Citadel node polling
2441 * for network traffic
2443 void cmd_netp(char *cmdbuf)
2454 extract_token(node, cmdbuf, 0, '|', sizeof node);
2455 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2457 /* load the IGnet Configuration to check node validity */
2458 load_working_ignetcfg();
2459 v = is_valid_node(nexthop, secret, node);
2462 snprintf(err_buf, sizeof err_buf,
2463 "An unknown Citadel server called \"%s\" attempted to connect from %s [%s].\n",
2464 node, CC->cs_host, CC->cs_addr
2466 CtdlLogPrintf(CTDL_WARNING, err_buf);
2467 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2468 CtdlAideMessage(err_buf, "IGNet Networking.");
2472 if (strcasecmp(pass, secret)) {
2473 snprintf(err_buf, sizeof err_buf,
2474 "A Citadel server at %s [%s] failed to authenticate as network node \"%s\".\n",
2475 CC->cs_host, CC->cs_addr, node
2477 CtdlLogPrintf(CTDL_WARNING, err_buf);
2478 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2479 CtdlAideMessage(err_buf, "IGNet Networking.");
2483 if (network_talking_to(node, NTT_CHECK)) {
2484 CtdlLogPrintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2485 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2489 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2490 network_talking_to(node, NTT_ADD);
2491 CtdlLogPrintf(CTDL_NOTICE, "Network node <%s> logged in from %s [%s]\n",
2492 CC->net_node, CC->cs_host, CC->cs_addr
2494 cprintf("%d authenticated as network node '%s'\n", CIT_OK, CC->net_node);
2498 int network_room_handler (struct ctdlroom *room)
2500 network_queue_room(room, NULL);
2506 * Module entry point
2508 CTDL_MODULE_INIT(network)
2512 create_spool_dirs();
2513 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2514 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2515 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2516 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2517 CtdlRegisterRoomHook(network_room_handler);
2518 CtdlRegisterCleanupHook(destroy_network_queue_room);
2521 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK, network_do_queue, NULL, 0);
2522 /* return our Subversion id for the Log */