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>
64 #include <libcitadel.h>
67 #include "citserver.h"
74 #include "internet_addressing.h"
75 #include "serv_network.h"
76 #include "clientsocket.h"
78 #include "citadel_dirs.h"
87 #include "ctdl_module.h"
91 /* Nonzero while we are doing network processing */
92 static int doing_queue = 0;
95 * When we do network processing, it's accomplished in two passes; one to
96 * gather a list of rooms and one to actually do them. It's ok that rplist
97 * is global; we have a mutex that keeps it safe.
99 struct RoomProcList *rplist = NULL;
102 * We build a map of network nodes during processing.
104 NetMap *the_netmap = NULL;
105 int netmap_changed = 0;
106 char *working_ignetcfg = NULL;
109 * Load or refresh the Citadel network (IGnet) configuration for this node.
111 void load_working_ignetcfg(void) {
115 cfg = CtdlGetSysConfig(IGNETCFG);
120 oldcfg = working_ignetcfg;
121 working_ignetcfg = cfg;
122 if (oldcfg != NULL) {
132 * Keep track of what messages to reject
134 FilterList *load_filter_list(void) {
135 char *serialized_list = NULL;
138 FilterList *newlist = NULL;
141 serialized_list = CtdlGetSysConfig(FILTERLIST);
142 if (serialized_list == NULL) return(NULL); /* if null, no entries */
144 /* Use the string tokenizer to grab one line at a time */
145 for (i=0; i<num_tokens(serialized_list, '\n'); ++i) {
146 extract_token(buf, serialized_list, i, '\n', sizeof buf);
147 nptr = (FilterList *) malloc(sizeof(FilterList));
148 extract_token(nptr->fl_user, buf, 0, '|', sizeof nptr->fl_user);
149 striplt(nptr->fl_user);
150 extract_token(nptr->fl_room, buf, 1, '|', sizeof nptr->fl_room);
151 striplt(nptr->fl_room);
152 extract_token(nptr->fl_node, buf, 2, '|', sizeof nptr->fl_node);
153 striplt(nptr->fl_node);
155 /* Cowardly refuse to add an any/any/any entry that would
156 * end up filtering every single message.
158 if (IsEmptyStr(nptr->fl_user) &&
159 IsEmptyStr(nptr->fl_room) &&
160 IsEmptyStr(nptr->fl_node)) {
164 nptr->next = newlist;
169 free(serialized_list);
174 void free_filter_list(FilterList *fl) {
175 if (fl == NULL) return;
176 free_filter_list(fl->next);
183 * Check the use table. This is a list of messages which have recently
184 * arrived on the system. It is maintained and queried to prevent the same
185 * message from being entered into the database multiple times if it happens
186 * to arrive multiple times by accident.
188 int network_usetable(struct CtdlMessage *msg) {
191 struct cdbdata *cdbut;
194 /* Bail out if we can't generate a message ID */
198 if (msg->cm_fields['I'] == NULL) {
201 if (IsEmptyStr(msg->cm_fields['I'])) {
205 /* Generate the message ID */
206 strcpy(msgid, msg->cm_fields['I']);
207 if (haschar(msgid, '@') == 0) {
209 if (msg->cm_fields['N'] != NULL) {
210 strcat(msgid, msg->cm_fields['N']);
217 cdbut = cdb_fetch(CDB_USETABLE, msgid, strlen(msgid));
220 CtdlLogPrintf(CTDL_DEBUG, "network_usetable() : we already have %s\n", msgid);
224 /* If we got to this point, it's unique: add it. */
225 strcpy(ut.ut_msgid, msgid);
226 ut.ut_timestamp = time(NULL);
227 cdb_store(CDB_USETABLE, msgid, strlen(msgid), &ut, sizeof(struct UseTable) );
233 * Read the network map from its configuration file into memory.
235 void read_network_map(void) {
236 char *serialized_map = NULL;
241 serialized_map = CtdlGetSysConfig(IGNETMAP);
242 if (serialized_map == NULL) return; /* if null, no entries */
244 /* Use the string tokenizer to grab one line at a time */
245 for (i=0; i<num_tokens(serialized_map, '\n'); ++i) {
246 extract_token(buf, serialized_map, i, '\n', sizeof buf);
247 nmptr = (NetMap *) malloc(sizeof(NetMap));
248 extract_token(nmptr->nodename, buf, 0, '|', sizeof nmptr->nodename);
249 nmptr->lastcontact = extract_long(buf, 1);
250 extract_token(nmptr->nexthop, buf, 2, '|', sizeof nmptr->nexthop);
251 nmptr->next = the_netmap;
255 free(serialized_map);
261 * Write the network map from memory back to the configuration file.
263 void write_network_map(void) {
264 char *serialized_map = NULL;
268 if (netmap_changed) {
269 serialized_map = strdup("");
271 if (the_netmap != NULL) {
272 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
273 serialized_map = realloc(serialized_map,
274 (strlen(serialized_map)+SIZ) );
275 if (!IsEmptyStr(nmptr->nodename)) {
276 snprintf(&serialized_map[strlen(serialized_map)],
280 (long)nmptr->lastcontact,
286 CtdlPutSysConfig(IGNETMAP, serialized_map);
287 free(serialized_map);
290 /* Now free the list */
291 while (the_netmap != NULL) {
292 nmptr = the_netmap->next;
302 * Check the network map and determine whether the supplied node name is
303 * valid. If it is not a neighbor node, supply the name of a neighbor node
304 * which is the next hop. If it *is* a neighbor node, we also fill in the
307 int is_valid_node(char *nexthop, char *secret, char *node) {
319 * First try the neighbor nodes
321 if (working_ignetcfg == NULL) {
322 CtdlLogPrintf(CTDL_ERR, "working_ignetcfg is NULL!\n");
323 if (nexthop != NULL) {
330 if (nexthop != NULL) {
334 /* Use the string tokenizer to grab one line at a time */
335 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
336 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
337 extract_token(buf, linebuf, 0, '|', sizeof buf);
338 if (!strcasecmp(buf, node)) {
339 if (nexthop != NULL) {
342 if (secret != NULL) {
343 extract_token(secret, linebuf, 1, '|', 256);
350 return(retval); /* yup, it's a direct neighbor */
354 * If we get to this point we have to see if we know the next hop
356 if (the_netmap != NULL) {
357 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
358 if (!strcasecmp(nmptr->nodename, node)) {
359 if (nexthop != NULL) {
360 strcpy(nexthop, nmptr->nexthop);
368 * If we get to this point, the supplied node name is bogus.
370 CtdlLogPrintf(CTDL_ERR, "Invalid node name <%s>\n", node);
378 void cmd_gnet(char *argbuf) {
379 char filename[PATH_MAX];
383 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
384 /* users can edit the netconfigs for their own mailbox rooms */
386 else if (CtdlAccessCheck(ac_room_aide)) return;
388 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
389 cprintf("%d Network settings for room #%ld <%s>\n",
391 CC->room.QRnumber, CC->room.QRname);
393 fp = fopen(filename, "r");
395 while (fgets(buf, sizeof buf, fp) != NULL) {
396 buf[strlen(buf)-1] = 0;
397 cprintf("%s\n", buf);
406 void cmd_snet(char *argbuf) {
407 char tempfilename[PATH_MAX];
408 char filename[PATH_MAX];
414 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
415 /* users can edit the netconfigs for their own mailbox rooms */
417 else if (CtdlAccessCheck(ac_room_aide)) return;
419 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
420 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
422 fp = fopen(tempfilename, "w");
424 cprintf("%d Cannot open %s: %s\n",
425 ERROR + INTERNAL_ERROR,
430 cprintf("%d %s\n", SEND_LISTING, tempfilename);
431 while (client_getln(buf, sizeof buf) >= 0 && strcmp(buf, "000")) {
432 fprintf(fp, "%s\n", buf);
436 /* Now copy the temp file to its permanent location.
437 * (We copy instead of link because they may be on different filesystems)
439 begin_critical_section(S_NETCONFIGS);
440 fp = fopen(tempfilename, "r");
442 newfp = fopen(filename, "w");
444 while (fgets(buf, sizeof buf, fp) != NULL) {
445 fprintf(newfp, "%s", buf);
451 end_critical_section(S_NETCONFIGS);
452 unlink(tempfilename);
457 * Deliver digest messages
459 void network_deliver_digest(SpoolControl *sc) {
462 struct CtdlMessage *msg = NULL;
465 size_t recps_len = SIZ;
467 struct recptypes *valid;
471 if (sc->num_msgs_spooled < 1) {
472 fclose(sc->digestfp);
477 msg = malloc(sizeof(struct CtdlMessage));
478 memset(msg, 0, sizeof(struct CtdlMessage));
479 msg->cm_magic = CTDLMESSAGE_MAGIC;
480 msg->cm_format_type = FMT_RFC822;
481 msg->cm_anon_type = MES_NORMAL;
483 sprintf(buf, "%ld", time(NULL));
484 msg->cm_fields['T'] = strdup(buf);
485 msg->cm_fields['A'] = strdup(CC->room.QRname);
486 snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
487 msg->cm_fields['U'] = strdup(buf);
488 sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
489 for (i=0; buf[i]; ++i) {
490 if (isspace(buf[i])) buf[i]='_';
491 buf[i] = tolower(buf[i]);
493 msg->cm_fields['F'] = strdup(buf);
494 msg->cm_fields['R'] = strdup(buf);
496 /* Set the 'List-ID' header */
497 msg->cm_fields['L'] = malloc(1024);
498 snprintf(msg->cm_fields['L'], 1024,
499 "%s <%ld.list-id.%s>",
506 * Go fetch the contents of the digest
508 fseek(sc->digestfp, 0L, SEEK_END);
509 msglen = ftell(sc->digestfp);
511 msg->cm_fields['M'] = malloc(msglen + 1);
512 fseek(sc->digestfp, 0L, SEEK_SET);
513 siz = fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
514 msg->cm_fields['M'][msglen] = '\0';
516 fclose(sc->digestfp);
519 /* Now generate the delivery instructions */
522 * Figure out how big a buffer we need to allocate
524 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
525 recps_len = recps_len + strlen(nptr->name) + 2;
528 recps = malloc(recps_len);
531 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
538 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
539 if (nptr != sc->digestrecps) {
542 strcat(recps, nptr->name);
545 /* Where do we want bounces and other noise to be heard? Surely not the list members! */
546 snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
548 /* Now submit the message */
549 valid = validate_recipients(recps, NULL, 0);
552 valid->bounce_to = strdup(bounce_to);
553 valid->envelope_from = strdup(bounce_to);
554 CtdlSubmitMsg(msg, valid, NULL, 0);
556 CtdlFreeMessage(msg);
557 free_recipients(valid);
562 * Deliver list messages to everyone on the list ... efficiently
564 void network_deliver_list(struct CtdlMessage *msg, SpoolControl *sc) {
566 size_t recps_len = SIZ;
567 struct recptypes *valid;
571 /* Don't do this if there were no recipients! */
572 if (sc->listrecps == NULL) return;
574 /* Now generate the delivery instructions */
577 * Figure out how big a buffer we need to allocate
579 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
580 recps_len = recps_len + strlen(nptr->name) + 2;
583 recps = malloc(recps_len);
586 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
593 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
594 if (nptr != sc->listrecps) {
597 strcat(recps, nptr->name);
600 /* Where do we want bounces and other noise to be heard? Surely not the list members! */
601 snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
603 /* Now submit the message */
604 valid = validate_recipients(recps, NULL, 0);
607 valid->bounce_to = strdup(bounce_to);
608 valid->envelope_from = strdup(bounce_to);
609 CtdlSubmitMsg(msg, valid, NULL, 0);
610 free_recipients(valid);
612 /* Do not call CtdlFreeMessage(msg) here; the caller will free it. */
619 * Spools out one message from the list.
621 void network_spool_msg(long msgnum, void *userdata) {
624 char *newpath = NULL;
625 size_t instr_len = SIZ;
626 struct CtdlMessage *msg = NULL;
629 struct ser_ret sermsg;
631 char filename[PATH_MAX];
635 int delete_after_send = 0; /* Set to 1 to delete after spooling */
636 int ok_to_participate = 0;
637 struct recptypes *valid;
639 sc = (SpoolControl *)userdata;
642 * Process mailing list recipients
645 if (sc->listrecps != NULL) {
646 /* Fetch the message. We're going to need to modify it
647 * in order to insert the [list name] in it, etc.
649 msg = CtdlFetchMessage(msgnum, 1);
652 /* Set the 'List-ID' header */
653 if (msg->cm_fields['L'] != NULL) {
654 free(msg->cm_fields['L']);
656 msg->cm_fields['L'] = malloc(1024);
657 snprintf(msg->cm_fields['L'], 1024,
658 "%s <%ld.list-id.%s>",
664 /* Prepend "[List name]" to the subject */
665 if (msg->cm_fields['U'] == NULL) {
666 msg->cm_fields['U'] = strdup("(no subject)");
668 snprintf(buf, sizeof buf, "[%s] %s", CC->room.QRname, msg->cm_fields['U']);
669 free(msg->cm_fields['U']);
670 msg->cm_fields['U'] = strdup(buf);
672 /* Set the recipient of the list message to the
673 * email address of the room itself.
674 * FIXME ... I want to be able to pick any address
676 if (msg->cm_fields['R'] != NULL) {
677 free(msg->cm_fields['R']);
679 msg->cm_fields['R'] = malloc(256);
680 snprintf(msg->cm_fields['R'], 256,
681 "room_%s@%s", CC->room.QRname,
683 for (i=0; msg->cm_fields['R'][i]; ++i) {
684 if (isspace(msg->cm_fields['R'][i])) {
685 msg->cm_fields['R'][i] = '_';
689 /* Handle delivery */
690 network_deliver_list(msg, sc);
691 CtdlFreeMessage(msg);
696 * Process digest recipients
698 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
699 msg = CtdlFetchMessage(msgnum, 1);
701 fprintf(sc->digestfp, " -----------------------------------"
702 "------------------------------------"
704 fprintf(sc->digestfp, "From: ");
705 if (msg->cm_fields['A'] != NULL) {
706 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
708 if (msg->cm_fields['F'] != NULL) {
709 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
711 else if (msg->cm_fields['N'] != NULL) {
712 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
714 fprintf(sc->digestfp, "\n");
715 if (msg->cm_fields['U'] != NULL) {
716 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
719 CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
721 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
722 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0, 0);
724 StrBufTrim(CC->redirect_buffer);
725 fwrite(HKEY("\n"), 1, sc->digestfp);
726 fwrite(SKEY(CC->redirect_buffer), 1, sc->digestfp);
727 fwrite(HKEY("\n"), 1, sc->digestfp);
729 FreeStrBuf(&CC->redirect_buffer);
731 sc->num_msgs_spooled += 1;
737 * Process client-side list participations for this room
740 if (sc->participates != NULL) {
741 msg = CtdlFetchMessage(msgnum, 1);
744 /* Only send messages which originated on our own Citadel
745 * network, otherwise we'll end up sending the remote
746 * mailing list's messages back to it, which is rude...
748 ok_to_participate = 0;
749 if (msg->cm_fields['N'] != NULL) {
750 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
751 ok_to_participate = 1;
753 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
754 ok_to_participate = 1;
757 if (ok_to_participate) {
758 if (msg->cm_fields['F'] != NULL) {
759 free(msg->cm_fields['F']);
761 msg->cm_fields['F'] = malloc(SIZ);
762 /* Replace the Internet email address of the actual
763 * author with the email address of the room itself,
764 * so the remote listserv doesn't reject us.
765 * FIXME ... I want to be able to pick any address
767 snprintf(msg->cm_fields['F'], SIZ,
768 "room_%s@%s", CC->room.QRname,
770 for (i=0; msg->cm_fields['F'][i]; ++i) {
771 if (isspace(msg->cm_fields['F'][i])) {
772 msg->cm_fields['F'][i] = '_';
777 * Figure out how big a buffer we need to allocate
779 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
781 if (msg->cm_fields['R'] == NULL) {
782 free(msg->cm_fields['R']);
784 msg->cm_fields['R'] = strdup(nptr->name);
786 valid = validate_recipients(nptr->name, NULL, 0);
787 CtdlSubmitMsg(msg, valid, "", 0);
788 free_recipients(valid);
792 CtdlFreeMessage(msg);
797 * Process IGnet push shares
799 msg = CtdlFetchMessage(msgnum, 1);
803 /* Prepend our node name to the Path field whenever
804 * sending a message to another IGnet node
806 if (msg->cm_fields['P'] == NULL) {
807 msg->cm_fields['P'] = strdup("username");
809 newpath_len = strlen(msg->cm_fields['P']) +
810 strlen(config.c_nodename) + 2;
811 newpath = malloc(newpath_len);
812 snprintf(newpath, newpath_len, "%s!%s",
813 config.c_nodename, msg->cm_fields['P']);
814 free(msg->cm_fields['P']);
815 msg->cm_fields['P'] = newpath;
818 * Determine if this message is set to be deleted
819 * after sending out on the network
821 if (msg->cm_fields['S'] != NULL) {
822 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
823 delete_after_send = 1;
827 /* Now send it to every node */
828 if (sc->ignet_push_shares != NULL)
829 for (mptr = sc->ignet_push_shares; mptr != NULL;
834 /* Check for valid node name */
835 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
836 CtdlLogPrintf(CTDL_ERR, "Invalid node <%s>\n", mptr->remote_nodename);
840 /* Check for split horizon */
841 CtdlLogPrintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
842 bang = num_tokens(msg->cm_fields['P'], '!');
843 if (bang > 1) for (i=0; i<(bang-1); ++i) {
844 extract_token(buf, msg->cm_fields['P'], i, '!', sizeof buf);
845 CtdlLogPrintf(CTDL_DEBUG, "Compare <%s> to <%s>\n",
846 buf, mptr->remote_nodename) ;
847 if (!strcasecmp(buf, mptr->remote_nodename)) {
849 CtdlLogPrintf(CTDL_DEBUG, "Not sending to %s\n",
850 mptr->remote_nodename);
853 CtdlLogPrintf(CTDL_DEBUG, "Sending to %s\n", mptr->remote_nodename);
857 /* Send the message */
861 * Force the message to appear in the correct room
862 * on the far end by setting the C field correctly
864 if (msg->cm_fields['C'] != NULL) {
865 free(msg->cm_fields['C']);
867 if (!IsEmptyStr(mptr->remote_roomname)) {
868 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
871 msg->cm_fields['C'] = strdup(CC->room.QRname);
874 /* serialize it for transmission */
875 serialize_message(&sermsg, msg);
876 if (sermsg.len > 0) {
878 /* write it to the spool file */
879 snprintf(filename, sizeof filename,"%s/%s",
881 mptr->remote_nodename);
882 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
883 fp = fopen(filename, "ab");
890 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
893 /* free the serialized version */
899 CtdlFreeMessage(msg);
902 /* update lastsent */
903 sc->lastsent = msgnum;
905 /* Delete this message if delete-after-send is set */
906 if (delete_after_send) {
907 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
913 int read_spoolcontrol_file(SpoolControl **scc, char *filename)
919 char roomname[ROOMNAMELEN];
922 int skipthisline = 0;
923 namelist *nptr = NULL;
924 maplist *mptr = NULL;
927 fp = fopen(filename, "r");
931 sc = malloc(sizeof(SpoolControl));
932 memset(sc, 0, sizeof(SpoolControl));
935 while (fgets(buf, sizeof buf, fp) != NULL) {
936 buf[strlen(buf)-1] = 0;
938 extract_token(instr, buf, 0, '|', sizeof instr);
939 if (!strcasecmp(instr, strof(lastsent))) {
940 sc->lastsent = extract_long(buf, 1);
942 else if (!strcasecmp(instr, strof(listrecp))) {
944 malloc(sizeof(namelist));
945 nptr->next = sc->listrecps;
946 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
947 sc->listrecps = nptr;
949 else if (!strcasecmp(instr, strof(participate))) {
951 malloc(sizeof(namelist));
952 nptr->next = sc->participates;
953 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
954 sc->participates = nptr;
956 else if (!strcasecmp(instr, strof(digestrecp))) {
958 malloc(sizeof(namelist));
959 nptr->next = sc->digestrecps;
960 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
961 sc->digestrecps = nptr;
963 else if (!strcasecmp(instr, strof(ignet_push_share))) {
964 extract_token(nodename, buf, 1, '|', sizeof nodename);
965 extract_token(roomname, buf, 2, '|', sizeof roomname);
966 mptr = (maplist *) malloc(sizeof(maplist));
967 mptr->next = sc->ignet_push_shares;
968 strcpy(mptr->remote_nodename, nodename);
969 strcpy(mptr->remote_roomname, roomname);
970 sc->ignet_push_shares = mptr;
973 /* Preserve 'other' lines ... *unless* they happen to
974 * be subscribe/unsubscribe pendings with expired
978 if (!strncasecmp(buf, strof(subpending)"|", 11)) {
979 if (time(NULL) - extract_long(buf, 4) > EXP) {
983 if (!strncasecmp(buf, strof(unsubpending)"|", 13)) {
984 if (time(NULL) - extract_long(buf, 3) > EXP) {
989 if (skipthisline == 0) {
990 linesize = strlen(buf);
991 sc->misc = realloc(sc->misc,
992 (miscsize + linesize + 2) );
993 sprintf(&sc->misc[miscsize], "%s\n", buf);
994 miscsize = miscsize + linesize + 1;
1004 void free_spoolcontrol_struct(SpoolControl **scc)
1007 namelist *nptr = NULL;
1008 maplist *mptr = NULL;
1011 while (sc->listrecps != NULL) {
1012 nptr = sc->listrecps->next;
1013 free(sc->listrecps);
1014 sc->listrecps = nptr;
1016 /* Do the same for digestrecps */
1017 while (sc->digestrecps != NULL) {
1018 nptr = sc->digestrecps->next;
1019 free(sc->digestrecps);
1020 sc->digestrecps = nptr;
1022 /* Do the same for participates */
1023 while (sc->participates != NULL) {
1024 nptr = sc->participates->next;
1025 free(sc->participates);
1026 sc->participates = nptr;
1028 while (sc->ignet_push_shares != NULL) {
1029 mptr = sc->ignet_push_shares->next;
1030 free(sc->ignet_push_shares);
1031 sc->ignet_push_shares = mptr;
1038 int writenfree_spoolcontrol_file(SpoolControl **scc, char *filename)
1042 namelist *nptr = NULL;
1043 maplist *mptr = NULL;
1046 fp = fopen(filename, "w");
1048 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
1049 filename, strerror(errno));
1050 free_spoolcontrol_struct(scc);
1053 fprintf(fp, "lastsent|%ld\n", sc->lastsent);
1055 /* Write out the listrecps while freeing from memory at the
1056 * same time. Am I clever or what? :)
1058 while (sc->listrecps != NULL) {
1059 fprintf(fp, "listrecp|%s\n", sc->listrecps->name);
1060 nptr = sc->listrecps->next;
1061 free(sc->listrecps);
1062 sc->listrecps = nptr;
1064 /* Do the same for digestrecps */
1065 while (sc->digestrecps != NULL) {
1066 fprintf(fp, "digestrecp|%s\n", sc->digestrecps->name);
1067 nptr = sc->digestrecps->next;
1068 free(sc->digestrecps);
1069 sc->digestrecps = nptr;
1071 /* Do the same for participates */
1072 while (sc->participates != NULL) {
1073 fprintf(fp, "participate|%s\n", sc->participates->name);
1074 nptr = sc->participates->next;
1075 free(sc->participates);
1076 sc->participates = nptr;
1078 while (sc->ignet_push_shares != NULL) {
1079 fprintf(fp, "ignet_push_share|%s", sc->ignet_push_shares->remote_nodename);
1080 if (!IsEmptyStr(sc->ignet_push_shares->remote_roomname)) {
1081 fprintf(fp, "|%s", sc->ignet_push_shares->remote_roomname);
1084 mptr = sc->ignet_push_shares->next;
1085 free(sc->ignet_push_shares);
1086 sc->ignet_push_shares = mptr;
1088 if (sc->misc != NULL) {
1089 fwrite(sc->misc, strlen(sc->misc), 1, fp);
1099 int is_recipient(SpoolControl *sc, const char *Name)
1105 nptr = sc->listrecps;
1106 while (nptr != NULL) {
1107 if (strncmp(Name, nptr->name, len)==0)
1111 /* Do the same for digestrecps */
1112 nptr = sc->digestrecps;
1113 while (nptr != NULL) {
1114 if (strncmp(Name, nptr->name, len)==0)
1118 /* Do the same for participates */
1119 nptr = sc->participates;
1120 while (nptr != NULL) {
1121 if (strncmp(Name, nptr->name, len)==0)
1130 * Batch up and send all outbound traffic from the current room
1132 void network_spoolout_room(char *room_to_spool) {
1134 char filename[PATH_MAX];
1139 * If the room doesn't exist, don't try to perform its networking tasks.
1140 * Normally this should never happen, but once in a while maybe a room gets
1141 * queued for networking and then deleted before it can happen.
1143 if (CtdlGetRoom(&CC->room, room_to_spool) != 0) {
1144 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
1148 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1149 begin_critical_section(S_NETCONFIGS);
1151 /* Only do net processing for rooms that have netconfigs */
1152 if (!read_spoolcontrol_file(&sc, filename))
1154 end_critical_section(S_NETCONFIGS);
1157 CtdlLogPrintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
1159 /* If there are digest recipients, we have to build a digest */
1160 if (sc->digestrecps != NULL) {
1161 sc->digestfp = tmpfile();
1162 fprintf(sc->digestfp, "Content-type: text/plain\n\n");
1165 /* Do something useful */
1166 CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
1167 network_spool_msg, sc);
1169 /* If we wrote a digest, deliver it and then close it */
1170 snprintf(buf, sizeof buf, "room_%s@%s",
1171 CC->room.QRname, config.c_fqdn);
1172 for (i=0; buf[i]; ++i) {
1173 buf[i] = tolower(buf[i]);
1174 if (isspace(buf[i])) buf[i] = '_';
1176 if (sc->digestfp != NULL) {
1177 fprintf(sc->digestfp, " -----------------------------------"
1178 "------------------------------------"
1180 "You are subscribed to the '%s' "
1182 "To post to the list: %s\n",
1183 CC->room.QRname, buf
1185 network_deliver_digest(sc); /* deliver and close */
1188 /* Now rewrite the config file */
1189 writenfree_spoolcontrol_file (&sc, filename);
1190 end_critical_section(S_NETCONFIGS);
1196 * Send the *entire* contents of the current room to one specific network node,
1197 * ignoring anything we know about which messages have already undergone
1198 * network processing. This can be used to bring a new node into sync.
1200 int network_sync_to(char *target_node) {
1202 int num_spooled = 0;
1208 char filename[PATH_MAX];
1211 /* Grab the configuration line we're looking for */
1212 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1213 begin_critical_section(S_NETCONFIGS);
1214 fp = fopen(filename, "r");
1216 end_critical_section(S_NETCONFIGS);
1219 while (fgets(buf, sizeof buf, fp) != NULL) {
1220 buf[strlen(buf)-1] = 0;
1221 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1222 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1223 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1224 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1225 && (!strcasecmp(sc_node, target_node)) ) {
1228 /* Concise syntax because we don't need a full linked-list */
1229 memset(&sc, 0, sizeof(SpoolControl));
1230 sc.ignet_push_shares = (maplist *)
1231 malloc(sizeof(maplist));
1232 sc.ignet_push_shares->next = NULL;
1233 safestrncpy(sc.ignet_push_shares->remote_nodename,
1235 sizeof sc.ignet_push_shares->remote_nodename);
1236 safestrncpy(sc.ignet_push_shares->remote_roomname,
1238 sizeof sc.ignet_push_shares->remote_roomname);
1242 end_critical_section(S_NETCONFIGS);
1244 if (!found_node) return(-1);
1246 /* Send ALL messages */
1247 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
1248 network_spool_msg, &sc);
1250 /* Concise cleanup because we know there's only one node in the sc */
1251 free(sc.ignet_push_shares);
1253 CtdlLogPrintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1254 num_spooled, target_node);
1255 return(num_spooled);
1260 * Implements the NSYN command
1262 void cmd_nsyn(char *argbuf) {
1264 char target_node[256];
1266 if (CtdlAccessCheck(ac_aide)) return;
1268 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1269 num_spooled = network_sync_to(target_node);
1270 if (num_spooled >= 0) {
1271 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1274 cprintf("%d No such room/node share exists.\n",
1275 ERROR + ROOM_NOT_FOUND);
1282 * Batch up and send all outbound traffic from the current room
1284 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1285 struct RoomProcList *ptr;
1287 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1288 if (ptr == NULL) return;
1290 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1291 begin_critical_section(S_RPLIST);
1294 end_critical_section(S_RPLIST);
1297 void destroy_network_queue_room(void)
1299 struct RoomProcList *cur, *p;
1300 NetMap *nmcur, *nmp;
1303 begin_critical_section(S_RPLIST);
1311 end_critical_section(S_RPLIST);
1314 while (nmcur != NULL)
1321 if (working_ignetcfg != NULL)
1322 free (working_ignetcfg);
1323 working_ignetcfg = NULL;
1328 * Learn topology from path fields
1330 void network_learn_topology(char *node, char *path) {
1334 strcpy(nexthop, "");
1336 if (num_tokens(path, '!') < 3) return;
1337 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1338 if (!strcasecmp(nmptr->nodename, node)) {
1339 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1340 nmptr->lastcontact = time(NULL);
1346 /* If we got here then it's not in the map, so add it. */
1347 nmptr = (NetMap *) malloc(sizeof (NetMap));
1348 strcpy(nmptr->nodename, node);
1349 nmptr->lastcontact = time(NULL);
1350 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1351 nmptr->next = the_netmap;
1360 * Bounce a message back to the sender
1362 void network_bounce(struct CtdlMessage *msg, char *reason) {
1363 char *oldpath = NULL;
1365 char bouncesource[SIZ];
1366 char recipient[SIZ];
1367 struct recptypes *valid = NULL;
1368 char force_room[ROOMNAMELEN];
1369 static int serialnum = 0;
1372 CtdlLogPrintf(CTDL_DEBUG, "entering network_bounce()\n");
1374 if (msg == NULL) return;
1376 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1379 * Give it a fresh message ID
1381 if (msg->cm_fields['I'] != NULL) {
1382 free(msg->cm_fields['I']);
1384 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1385 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1386 msg->cm_fields['I'] = strdup(buf);
1389 * FIXME ... right now we're just sending a bounce; we really want to
1390 * include the text of the bounced message.
1392 if (msg->cm_fields['M'] != NULL) {
1393 free(msg->cm_fields['M']);
1395 msg->cm_fields['M'] = strdup(reason);
1396 msg->cm_format_type = 0;
1399 * Turn the message around
1401 if (msg->cm_fields['R'] == NULL) {
1402 free(msg->cm_fields['R']);
1405 if (msg->cm_fields['D'] == NULL) {
1406 free(msg->cm_fields['D']);
1409 snprintf(recipient, sizeof recipient, "%s@%s",
1410 msg->cm_fields['A'], msg->cm_fields['N']);
1412 if (msg->cm_fields['A'] == NULL) {
1413 free(msg->cm_fields['A']);
1416 if (msg->cm_fields['N'] == NULL) {
1417 free(msg->cm_fields['N']);
1420 if (msg->cm_fields['U'] == NULL) {
1421 free(msg->cm_fields['U']);
1424 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1425 msg->cm_fields['N'] = strdup(config.c_nodename);
1426 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1428 /* prepend our node to the path */
1429 if (msg->cm_fields['P'] != NULL) {
1430 oldpath = msg->cm_fields['P'];
1431 msg->cm_fields['P'] = NULL;
1434 oldpath = strdup("unknown_user");
1436 size = strlen(oldpath) + SIZ;
1437 msg->cm_fields['P'] = malloc(size);
1438 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1441 /* Now submit the message */
1442 valid = validate_recipients(recipient, NULL, 0);
1443 if (valid != NULL) if (valid->num_error != 0) {
1444 free_recipients(valid);
1447 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1448 strcpy(force_room, config.c_aideroom);
1451 strcpy(force_room, "");
1453 if ( (valid == NULL) && IsEmptyStr(force_room) ) {
1454 strcpy(force_room, config.c_aideroom);
1456 CtdlSubmitMsg(msg, valid, force_room, 0);
1459 if (valid != NULL) free_recipients(valid);
1460 CtdlFreeMessage(msg);
1461 CtdlLogPrintf(CTDL_DEBUG, "leaving network_bounce()\n");
1468 * Process a buffer containing a single message from a single file
1469 * from the inbound queue
1471 void network_process_buffer(char *buffer, long size) {
1472 struct CtdlMessage *msg = NULL;
1475 struct recptypes *recp = NULL;
1476 char target_room[ROOMNAMELEN];
1477 struct ser_ret sermsg;
1478 char *oldpath = NULL;
1479 char filename[PATH_MAX];
1482 unsigned char firstbyte;
1483 unsigned char lastbyte;
1485 CtdlLogPrintf(CTDL_DEBUG, "network_process_buffer() processing %ld bytes\n", size);
1487 /* Validate just a little bit. First byte should be FF and * last byte should be 00. */
1488 firstbyte = buffer[0];
1489 lastbyte = buffer[size-1];
1490 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1491 CtdlLogPrintf(CTDL_ERR, "Corrupt message ignored. Length=%ld, firstbyte = %d, lastbyte = %d\n",
1492 size, firstbyte, lastbyte);
1496 /* Set default target room to trash */
1497 strcpy(target_room, TWITROOM);
1499 /* Load the message into memory */
1500 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1501 memset(msg, 0, sizeof(struct CtdlMessage));
1502 msg->cm_magic = CTDLMESSAGE_MAGIC;
1503 msg->cm_anon_type = buffer[1];
1504 msg->cm_format_type = buffer[2];
1506 for (pos = 3; pos < size; ++pos) {
1507 field = buffer[pos];
1508 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1509 pos = pos + strlen(&buffer[(int)pos]);
1512 /* Check for message routing */
1513 if (msg->cm_fields['D'] != NULL) {
1514 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1516 /* route the message */
1517 strcpy(nexthop, "");
1518 if (is_valid_node(nexthop, NULL, msg->cm_fields['D']) == 0) {
1519 /* prepend our node to the path */
1520 if (msg->cm_fields['P'] != NULL) {
1521 oldpath = msg->cm_fields['P'];
1522 msg->cm_fields['P'] = NULL;
1525 oldpath = strdup("unknown_user");
1527 size = strlen(oldpath) + SIZ;
1528 msg->cm_fields['P'] = malloc(size);
1529 snprintf(msg->cm_fields['P'], size, "%s!%s",
1530 config.c_nodename, oldpath);
1533 /* serialize the message */
1534 serialize_message(&sermsg, msg);
1537 if (IsEmptyStr(nexthop)) {
1538 strcpy(nexthop, msg->cm_fields['D']);
1545 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
1546 fp = fopen(filename, "ab");
1553 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1556 CtdlFreeMessage(msg);
1560 else { /* invalid destination node name */
1563 "A message you sent could not be delivered due to an invalid destination node"
1564 " name. Please check the address and try sending the message again.\n");
1573 * Check to see if we already have a copy of this message, and
1574 * abort its processing if so. (We used to post a warning to Aide>
1575 * every time this happened, but the network is now so densely
1576 * connected that it's inevitable.)
1578 if (network_usetable(msg) != 0) {
1579 CtdlFreeMessage(msg);
1583 /* Learn network topology from the path */
1584 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1585 network_learn_topology(msg->cm_fields['N'], msg->cm_fields['P']);
1588 /* Is the sending node giving us a very persuasive suggestion about
1589 * which room this message should be saved in? If so, go with that.
1591 if (msg->cm_fields['C'] != NULL) {
1592 safestrncpy(target_room, msg->cm_fields['C'], sizeof target_room);
1595 /* Otherwise, does it have a recipient? If so, validate it... */
1596 else if (msg->cm_fields['R'] != NULL) {
1597 recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
1598 if (recp != NULL) if (recp->num_error != 0) {
1600 "A message you sent could not be delivered due to an invalid address.\n"
1601 "Please check the address and try sending the message again.\n");
1603 free_recipients(recp);
1604 CtdlLogPrintf(CTDL_DEBUG, "Bouncing message due to invalid recipient address.\n");
1607 strcpy(target_room, ""); /* no target room if mail */
1610 /* Our last shot at finding a home for this message is to see if
1611 * it has the O field (Originating room) set.
1613 else if (msg->cm_fields['O'] != NULL) {
1614 safestrncpy(target_room, msg->cm_fields['O'], sizeof target_room);
1617 /* Strip out fields that are only relevant during transit */
1618 if (msg->cm_fields['D'] != NULL) {
1619 free(msg->cm_fields['D']);
1620 msg->cm_fields['D'] = NULL;
1622 if (msg->cm_fields['C'] != NULL) {
1623 free(msg->cm_fields['C']);
1624 msg->cm_fields['C'] = NULL;
1627 /* save the message into a room */
1628 if (PerformNetprocHooks(msg, target_room) == 0) {
1629 msg->cm_flags = CM_SKIP_HOOKS;
1630 CtdlSubmitMsg(msg, recp, target_room, 0);
1632 CtdlFreeMessage(msg);
1633 free_recipients(recp);
1638 * Process a single message from a single file from the inbound queue
1640 void network_process_message(FILE *fp, long msgstart, long msgend) {
1645 hold_pos = ftell(fp);
1646 size = msgend - msgstart + 1;
1647 buffer = malloc(size);
1648 if (buffer != NULL) {
1649 fseek(fp, msgstart, SEEK_SET);
1650 if (fread(buffer, size, 1, fp) > 0) {
1651 network_process_buffer(buffer, size);
1656 fseek(fp, hold_pos, SEEK_SET);
1661 * Process a single file from the inbound queue
1663 void network_process_file(char *filename) {
1665 long msgstart = (-1L);
1666 long msgend = (-1L);
1671 fp = fopen(filename, "rb");
1673 CtdlLogPrintf(CTDL_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
1677 fseek(fp, 0L, SEEK_END);
1678 CtdlLogPrintf(CTDL_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
1681 /* Look for messages in the data stream and break them out */
1682 while (ch = getc(fp), ch >= 0) {
1685 if (msgstart >= 0L) {
1686 msgend = msgcur - 1;
1687 network_process_message(fp, msgstart, msgend);
1695 msgend = msgcur - 1;
1696 if (msgstart >= 0L) {
1697 network_process_message(fp, msgstart, msgend);
1706 * Process anything in the inbound queue
1708 void network_do_spoolin(void) {
1711 struct stat statbuf;
1712 char filename[PATH_MAX];
1713 static time_t last_spoolin_mtime = 0L;
1716 * Check the spoolin directory's modification time. If it hasn't
1717 * been touched, we don't need to scan it.
1719 if (stat(ctdl_netin_dir, &statbuf)) return;
1720 if (statbuf.st_mtime == last_spoolin_mtime) {
1721 CtdlLogPrintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1724 last_spoolin_mtime = statbuf.st_mtime;
1725 CtdlLogPrintf(CTDL_DEBUG, "network: processing inbound queue\n");
1728 * Ok, there's something interesting in there, so scan it.
1730 dp = opendir(ctdl_netin_dir);
1731 if (dp == NULL) return;
1733 while (d = readdir(dp), d != NULL) {
1734 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1740 network_process_file(filename);
1748 * Delete any files in the outbound queue that were intended
1749 * to be sent to nodes which no longer exist.
1751 void network_purge_spoolout(void) {
1754 char filename[PATH_MAX];
1758 dp = opendir(ctdl_netout_dir);
1759 if (dp == NULL) return;
1761 while (d = readdir(dp), d != NULL) {
1762 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1770 strcpy(nexthop, "");
1771 i = is_valid_node(nexthop, NULL, d->d_name);
1773 if ( (i != 0) || !IsEmptyStr(nexthop) ) {
1784 * receive network spool from the remote system
1786 void receive_spool(int *sock, char *remote_nodename) {
1788 long download_len = 0L;
1789 long bytes_received = 0L;
1790 long bytes_copied = 0L;
1792 static char pbuf[IGNET_PACKET_SIZE];
1793 char tempfilename[PATH_MAX];
1794 char filename[PATH_MAX];
1798 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
1799 if (sock_puts(sock, "NDOP") < 0) return;
1800 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1801 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1802 if (buf[0] != '2') {
1805 download_len = extract_long(&buf[4], 0);
1807 bytes_received = 0L;
1808 fp = fopen(tempfilename, "w");
1810 CtdlLogPrintf(CTDL_CRIT, "cannot open download file locally: %s\n",
1815 while (bytes_received < download_len) {
1817 * If shutting down we can exit here and unlink the temp file.
1818 * this shouldn't loose us any messages.
1820 if (CtdlThreadCheckStop())
1823 unlink(tempfilename);
1826 snprintf(buf, sizeof buf, "READ %ld|%ld",
1828 ((download_len - bytes_received > IGNET_PACKET_SIZE)
1829 ? IGNET_PACKET_SIZE : (download_len - bytes_received)));
1830 if (sock_puts(sock, buf) < 0) {
1832 unlink(tempfilename);
1835 if (sock_getln(sock, buf, sizeof buf) < 0) {
1837 unlink(tempfilename);
1840 if (buf[0] == '6') {
1841 plen = extract_long(&buf[4], 0);
1842 if (sock_read(sock, pbuf, plen, 1) < 0) {
1844 unlink(tempfilename);
1847 fwrite((char *) pbuf, plen, 1, fp);
1848 bytes_received = bytes_received + plen;
1853 /** Last chance for shutdown exit */
1854 if (CtdlThreadCheckStop())
1856 unlink(tempfilename);
1859 if (sock_puts(sock, "CLOS") < 0) {
1860 unlink(tempfilename);
1864 * From here on we must complete or messages will get lost
1866 if (sock_getln(sock, buf, sizeof buf) < 0) {
1867 unlink(tempfilename);
1870 if (download_len > 0) {
1871 CtdlLogPrintf(CTDL_NOTICE, "Received %ld octets from <%s>\n", download_len, remote_nodename);
1873 CtdlLogPrintf(CTDL_DEBUG, "%s\n", buf);
1875 /* Now copy the temp file to its permanent location.
1876 * (We copy instead of link because they may be on different filesystems)
1878 begin_critical_section(S_NETSPOOL);
1886 fp = fopen(tempfilename, "r");
1888 newfp = fopen(filename, "w");
1889 if (newfp != NULL) {
1891 while (bytes_copied < download_len) {
1892 plen = download_len - bytes_copied;
1893 if (plen > sizeof buf) {
1896 siz = fread(buf, plen, 1, fp);
1897 fwrite(buf, plen, 1, newfp);
1898 bytes_copied += plen;
1904 end_critical_section(S_NETSPOOL);
1905 unlink(tempfilename);
1911 * transmit network spool to the remote system
1913 void transmit_spool(int *sock, char *remote_nodename)
1918 long bytes_to_write, thisblock, bytes_written;
1922 if (sock_puts(sock, "NUOP") < 0) return;
1923 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1924 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1925 if (buf[0] != '2') {
1929 snprintf(sfname, sizeof sfname,
1933 fd = open(sfname, O_RDONLY);
1935 if (errno != ENOENT) {
1936 CtdlLogPrintf(CTDL_CRIT, "cannot open upload file locally: %s\n",
1942 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
1943 bytes_to_write = plen;
1944 while (bytes_to_write > 0L) {
1945 /** Exit if shutting down */
1946 if (CtdlThreadCheckStop())
1952 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
1953 if (sock_puts(sock, buf) < 0) {
1957 if (sock_getln(sock, buf, sizeof buf) < 0) {
1961 thisblock = atol(&buf[4]);
1962 if (buf[0] == '7') {
1963 if (sock_write(sock, pbuf,
1964 (int) thisblock) < 0) {
1968 bytes_to_write -= thisblock;
1969 bytes_written += thisblock;
1978 /** Last chance for shutdown exit */
1979 if(CtdlThreadCheckStop())
1982 if (sock_puts(sock, "UCLS 1") < 0) return;
1984 * From here on we must complete or messages will get lost
1986 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1987 CtdlLogPrintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n",
1988 bytes_written, remote_nodename);
1989 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1990 if (buf[0] == '2') {
1991 CtdlLogPrintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
1999 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
2001 void network_poll_node(char *node, char *secret, char *host, char *port) {
2005 char connected_to[SIZ];
2008 if (network_talking_to(node, NTT_CHECK)) return;
2009 network_talking_to(node, NTT_ADD);
2010 CtdlLogPrintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
2012 sock = sock_connect(host, port, "tcp");
2014 CtdlLogPrintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
2015 network_talking_to(node, NTT_REMOVE);
2019 CtdlLogPrintf(CTDL_DEBUG, "Connected!\n");
2020 CCC->sReadBuf = NewStrBuf();
2021 CCC->sMigrateBuf = NewStrBuf();
2023 /* Read the server greeting */
2024 if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
2025 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2027 /* Check that the remote is who we think it is and warn the Aide if not */
2028 extract_token (connected_to, buf, 1, ' ', sizeof connected_to);
2029 if (strcmp(connected_to, node))
2031 snprintf (err_buf, sizeof(err_buf), "Connected to node \"%s\" but I was expecting to connect to node \"%s\".", connected_to, node);
2032 CtdlLogPrintf(CTDL_ERR, "%s\n", err_buf);
2033 CtdlAideMessage(err_buf, "Network error");
2036 /* We're talking to the correct node. Now identify ourselves. */
2037 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
2038 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2039 if (sock_puts(&sock, buf) <0) goto bail;
2040 if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
2041 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2042 if (buf[0] != '2') goto bail;
2044 /* At this point we are authenticated. */
2045 if (!CtdlThreadCheckStop())
2046 receive_spool(&sock, node);
2047 if (!CtdlThreadCheckStop())
2048 transmit_spool(&sock, node);
2051 sock_puts(&sock, "QUIT");
2053 FreeStrBuf(&CCC->sReadBuf);
2054 FreeStrBuf(&CCC->sMigrateBuf);
2057 network_talking_to(node, NTT_REMOVE);
2063 * Poll other Citadel nodes and transfer inbound/outbound network data.
2064 * Set "full" to nonzero to force a poll of every node, or to zero to poll
2065 * only nodes to which we have data to send.
2067 void network_poll_other_citadel_nodes(int full_poll) {
2075 char spoolfile[256];
2077 if (working_ignetcfg == NULL) {
2078 CtdlLogPrintf(CTDL_DEBUG, "No nodes defined - not polling\n");
2082 /* Use the string tokenizer to grab one line at a time */
2083 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
2084 if(CtdlThreadCheckStop())
2086 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
2087 extract_token(node, linebuf, 0, '|', sizeof node);
2088 extract_token(secret, linebuf, 1, '|', sizeof secret);
2089 extract_token(host, linebuf, 2, '|', sizeof host);
2090 extract_token(port, linebuf, 3, '|', sizeof port);
2091 if ( !IsEmptyStr(node) && !IsEmptyStr(secret)
2092 && !IsEmptyStr(host) && !IsEmptyStr(port)) {
2100 if (access(spoolfile, R_OK) == 0) {
2105 network_poll_node(node, secret, host, port);
2116 * It's ok if these directories already exist. Just fail silently.
2118 void create_spool_dirs(void) {
2119 if ((mkdir(ctdl_spool_dir, 0700) != 0) && (errno != EEXIST))
2120 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_spool_dir, strerror(errno));
2121 if (chown(ctdl_spool_dir, CTDLUID, (-1)) != 0)
2122 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_spool_dir, strerror(errno));
2123 if ((mkdir(ctdl_netin_dir, 0700) != 0) && (errno != EEXIST))
2124 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_netin_dir, strerror(errno));
2125 if (chown(ctdl_netin_dir, CTDLUID, (-1)) != 0)
2126 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netin_dir, strerror(errno));
2127 if ((mkdir(ctdl_netout_dir, 0700) != 0) && (errno != EEXIST))
2128 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_netout_dir, strerror(errno));
2129 if (chown(ctdl_netout_dir, CTDLUID, (-1)) != 0)
2130 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netout_dir, strerror(errno));
2138 * network_do_queue()
2140 * Run through the rooms doing various types of network stuff.
2142 void *network_do_queue(void *args) {
2143 static time_t last_run = 0L;
2144 struct RoomProcList *ptr;
2145 int full_processing = 1;
2146 struct CitContext networkerCC;
2148 /* Give the networker its own private CitContext */
2149 CtdlFillSystemContext(&networkerCC, "network");
2150 citthread_setspecific(MyConKey, (void *)&networkerCC );
2153 * Run the full set of processing tasks no more frequently
2154 * than once every n seconds
2156 if ( (time(NULL) - last_run) < config.c_net_freq ) {
2157 full_processing = 0;
2158 CtdlLogPrintf(CTDL_DEBUG, "Network full processing in %ld seconds.\n", config.c_net_freq - (time(NULL)- last_run));
2162 * This is a simple concurrency check to make sure only one queue run
2163 * is done at a time. We could do this with a mutex, but since we
2164 * don't really require extremely fine granularity here, we'll do it
2165 * with a static variable instead.
2167 if (doing_queue) return NULL;
2170 /* Load the IGnet Configuration into memory */
2171 load_working_ignetcfg();
2174 * Poll other Citadel nodes. Maybe. If "full_processing" is set
2175 * then we poll everyone. Otherwise we only poll nodes we have stuff
2178 network_poll_other_citadel_nodes(full_processing);
2181 * Load the network map and filter list into memory.
2184 filterlist = load_filter_list();
2187 * Go ahead and run the queue
2189 if (full_processing && !CtdlThreadCheckStop()) {
2190 CtdlLogPrintf(CTDL_DEBUG, "network: loading outbound queue\n");
2191 CtdlForEachRoom(network_queue_room, NULL);
2194 if (rplist != NULL) {
2195 CtdlLogPrintf(CTDL_DEBUG, "network: running outbound queue\n");
2196 while (rplist != NULL && !CtdlThreadCheckStop()) {
2197 char spoolroomname[ROOMNAMELEN];
2198 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
2199 begin_critical_section(S_RPLIST);
2201 /* pop this record off the list */
2203 rplist = rplist->next;
2206 /* invalidate any duplicate entries to prevent double processing */
2207 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
2208 if (!strcasecmp(ptr->name, spoolroomname)) {
2213 end_critical_section(S_RPLIST);
2214 if (spoolroomname[0] != 0) {
2215 network_spoolout_room(spoolroomname);
2220 /* If there is anything in the inbound queue, process it */
2221 if (!CtdlThreadCheckStop())
2222 network_do_spoolin();
2224 /* Save the network map back to disk */
2225 write_network_map();
2227 /* Free the filter list in memory */
2228 free_filter_list(filterlist);
2231 network_purge_spoolout();
2233 CtdlLogPrintf(CTDL_DEBUG, "network: queue run completed\n");
2235 if (full_processing) {
2236 last_run = time(NULL);
2240 if (!CtdlThreadCheckStop()) // Only reschedule if system is not stopping
2241 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK, network_do_queue, NULL, time(NULL) + 60);
2243 CtdlLogPrintf(CTDL_DEBUG, "network: Task STOPPED.\n");
2249 * cmd_netp() - authenticate to the server as another Citadel node polling
2250 * for network traffic
2252 void cmd_netp(char *cmdbuf)
2263 extract_token(node, cmdbuf, 0, '|', sizeof node);
2264 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2267 CtdlLogPrintf(CTDL_WARNING, "Network node <%s> refused - spooling\n", node);
2268 cprintf("%d spooling - try again in a few minutes\n", ERROR + RESOURCE_BUSY);
2272 /* load the IGnet Configuration to check node validity */
2273 load_working_ignetcfg();
2274 v = is_valid_node(nexthop, secret, node);
2277 snprintf(err_buf, sizeof err_buf,
2278 "An unknown Citadel server called \"%s\" attempted to connect from %s [%s].\n",
2279 node, CC->cs_host, CC->cs_addr
2281 CtdlLogPrintf(CTDL_WARNING, err_buf);
2282 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2283 CtdlAideMessage(err_buf, "IGNet Networking.");
2287 if (strcasecmp(pass, secret)) {
2288 snprintf(err_buf, sizeof err_buf,
2289 "A Citadel server at %s [%s] failed to authenticate as network node \"%s\".\n",
2290 CC->cs_host, CC->cs_addr, node
2292 CtdlLogPrintf(CTDL_WARNING, err_buf);
2293 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2294 CtdlAideMessage(err_buf, "IGNet Networking.");
2298 if (network_talking_to(node, NTT_CHECK)) {
2299 CtdlLogPrintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2300 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2304 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2305 network_talking_to(node, NTT_ADD);
2306 CtdlLogPrintf(CTDL_NOTICE, "Network node <%s> logged in from %s [%s]\n",
2307 CC->net_node, CC->cs_host, CC->cs_addr
2309 cprintf("%d authenticated as network node '%s'\n", CIT_OK, CC->net_node);
2313 int network_room_handler (struct ctdlroom *room)
2315 network_queue_room(room, NULL);
2321 * Module entry point
2323 CTDL_MODULE_INIT(network)
2327 create_spool_dirs();
2328 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2329 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2330 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2331 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2332 CtdlRegisterRoomHook(network_room_handler);
2333 CtdlRegisterCleanupHook(destroy_network_queue_room);
2336 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK, network_do_queue, NULL, 0);
2337 /* return our Subversion id for the Log */