4 * This module handles shared rooms, inter-Citadel mail, and outbound
5 * mailing list processing.
7 * Copyright (c) 2000-2009 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;
466 struct recptypes *valid;
470 if (sc->num_msgs_spooled < 1) {
471 fclose(sc->digestfp);
476 msg = malloc(sizeof(struct CtdlMessage));
477 memset(msg, 0, sizeof(struct CtdlMessage));
478 msg->cm_magic = CTDLMESSAGE_MAGIC;
479 msg->cm_format_type = FMT_RFC822;
480 msg->cm_anon_type = MES_NORMAL;
482 sprintf(buf, "%ld", time(NULL));
483 msg->cm_fields['T'] = strdup(buf);
484 msg->cm_fields['A'] = strdup(CC->room.QRname);
485 snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
486 msg->cm_fields['U'] = strdup(buf);
487 sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
488 for (i=0; buf[i]; ++i) {
489 if (isspace(buf[i])) buf[i]='_';
490 buf[i] = tolower(buf[i]);
492 msg->cm_fields['F'] = strdup(buf);
493 msg->cm_fields['R'] = strdup(buf);
495 /* Set the 'List-ID' header */
496 msg->cm_fields['L'] = malloc(1024);
497 snprintf(msg->cm_fields['L'], 1024,
498 "%s <%ld.list-id.%s>",
505 * Go fetch the contents of the digest
507 fseek(sc->digestfp, 0L, SEEK_END);
508 msglen = ftell(sc->digestfp);
510 msg->cm_fields['M'] = malloc(msglen + 1);
511 fseek(sc->digestfp, 0L, SEEK_SET);
512 fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
513 msg->cm_fields['M'][msglen] = 0;
515 fclose(sc->digestfp);
518 /* Now generate the delivery instructions */
521 * Figure out how big a buffer we need to allocate
523 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
524 recps_len = recps_len + strlen(nptr->name) + 2;
527 recps = malloc(recps_len);
530 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
537 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
538 if (nptr != sc->digestrecps) {
541 strcat(recps, nptr->name);
544 /* Where do we want bounces and other noise to be heard? Surely not the list members! */
545 snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
547 /* Now submit the message */
548 valid = validate_recipients(recps, NULL, 0);
551 valid->bounce_to = strdup(bounce_to);
552 valid->envelope_from = strdup(bounce_to);
553 CtdlSubmitMsg(msg, valid, NULL, 0);
555 CtdlFreeMessage(msg);
556 free_recipients(valid);
561 * Deliver list messages to everyone on the list ... efficiently
563 void network_deliver_list(struct CtdlMessage *msg, SpoolControl *sc) {
565 size_t recps_len = SIZ;
566 struct recptypes *valid;
570 /* Don't do this if there were no recipients! */
571 if (sc->listrecps == NULL) return;
573 /* Now generate the delivery instructions */
576 * Figure out how big a buffer we need to allocate
578 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
579 recps_len = recps_len + strlen(nptr->name) + 2;
582 recps = malloc(recps_len);
585 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
592 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
593 if (nptr != sc->listrecps) {
596 strcat(recps, nptr->name);
599 /* Where do we want bounces and other noise to be heard? Surely not the list members! */
600 snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
602 /* Now submit the message */
603 valid = validate_recipients(recps, NULL, 0);
606 valid->bounce_to = strdup(bounce_to);
607 valid->envelope_from = strdup(bounce_to);
608 CtdlSubmitMsg(msg, valid, NULL, 0);
609 free_recipients(valid);
611 /* Do not call CtdlFreeMessage(msg) here; the caller will free it. */
618 * Spools out one message from the list.
620 void network_spool_msg(long msgnum, void *userdata) {
623 char *newpath = NULL;
624 size_t instr_len = SIZ;
625 struct CtdlMessage *msg = NULL;
628 struct ser_ret sermsg;
630 char filename[PATH_MAX];
634 int delete_after_send = 0; /* Set to 1 to delete after spooling */
635 int ok_to_participate = 0;
636 struct recptypes *valid;
638 sc = (SpoolControl *)userdata;
641 * Process mailing list recipients
644 if (sc->listrecps != NULL) {
645 /* Fetch the message. We're going to need to modify it
646 * in order to insert the [list name] in it, etc.
648 msg = CtdlFetchMessage(msgnum, 1);
651 /* Set the 'List-ID' header */
652 if (msg->cm_fields['L'] != NULL) {
653 free(msg->cm_fields['L']);
655 msg->cm_fields['L'] = malloc(1024);
656 snprintf(msg->cm_fields['L'], 1024,
657 "%s <%ld.list-id.%s>",
663 /* Prepend "[List name]" to the subject */
664 if (msg->cm_fields['U'] == NULL) {
665 msg->cm_fields['U'] = strdup("(no subject)");
667 snprintf(buf, sizeof buf, "[%s] %s", CC->room.QRname, msg->cm_fields['U']);
668 free(msg->cm_fields['U']);
669 msg->cm_fields['U'] = strdup(buf);
671 /* Set the recipient of the list message to the
672 * email address of the room itself.
673 * FIXME ... I want to be able to pick any address
675 if (msg->cm_fields['R'] != NULL) {
676 free(msg->cm_fields['R']);
678 msg->cm_fields['R'] = malloc(256);
679 snprintf(msg->cm_fields['R'], 256,
680 "room_%s@%s", CC->room.QRname,
682 for (i=0; msg->cm_fields['R'][i]; ++i) {
683 if (isspace(msg->cm_fields['R'][i])) {
684 msg->cm_fields['R'][i] = '_';
688 /* Handle delivery */
689 network_deliver_list(msg, sc);
690 CtdlFreeMessage(msg);
695 * Process digest recipients
697 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
698 msg = CtdlFetchMessage(msgnum, 1);
700 fprintf(sc->digestfp, " -----------------------------------"
701 "------------------------------------"
703 fprintf(sc->digestfp, "From: ");
704 if (msg->cm_fields['A'] != NULL) {
705 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
707 if (msg->cm_fields['F'] != NULL) {
708 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
710 else if (msg->cm_fields['N'] != NULL) {
711 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
713 fprintf(sc->digestfp, "\n");
714 if (msg->cm_fields['U'] != NULL) {
715 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
718 CC->redirect_buffer = malloc(SIZ);
719 CC->redirect_len = 0;
720 CC->redirect_alloc = SIZ;
722 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
723 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0, 0);
725 striplt(CC->redirect_buffer);
726 fprintf(sc->digestfp, "\n%s\n", CC->redirect_buffer);
728 free(CC->redirect_buffer);
729 CC->redirect_buffer = NULL;
730 CC->redirect_len = 0;
731 CC->redirect_alloc = 0;
733 sc->num_msgs_spooled += 1;
739 * Process client-side list participations for this room
742 if (sc->participates != NULL) {
743 msg = CtdlFetchMessage(msgnum, 1);
746 /* Only send messages which originated on our own Citadel
747 * network, otherwise we'll end up sending the remote
748 * mailing list's messages back to it, which is rude...
750 ok_to_participate = 0;
751 if (msg->cm_fields['N'] != NULL) {
752 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
753 ok_to_participate = 1;
755 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
756 ok_to_participate = 1;
759 if (ok_to_participate) {
760 if (msg->cm_fields['F'] != NULL) {
761 free(msg->cm_fields['F']);
763 msg->cm_fields['F'] = malloc(SIZ);
764 /* Replace the Internet email address of the actual
765 * author with the email address of the room itself,
766 * so the remote listserv doesn't reject us.
767 * FIXME ... I want to be able to pick any address
769 snprintf(msg->cm_fields['F'], SIZ,
770 "room_%s@%s", CC->room.QRname,
772 for (i=0; msg->cm_fields['F'][i]; ++i) {
773 if (isspace(msg->cm_fields['F'][i])) {
774 msg->cm_fields['F'][i] = '_';
779 * Figure out how big a buffer we need to allocate
781 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
783 if (msg->cm_fields['R'] == NULL) {
784 free(msg->cm_fields['R']);
786 msg->cm_fields['R'] = strdup(nptr->name);
788 valid = validate_recipients(nptr->name, NULL, 0);
789 CtdlSubmitMsg(msg, valid, "", 0);
790 free_recipients(valid);
794 CtdlFreeMessage(msg);
799 * Process IGnet push shares
801 msg = CtdlFetchMessage(msgnum, 1);
805 /* Prepend our node name to the Path field whenever
806 * sending a message to another IGnet node
808 if (msg->cm_fields['P'] == NULL) {
809 msg->cm_fields['P'] = strdup("username");
811 newpath_len = strlen(msg->cm_fields['P']) +
812 strlen(config.c_nodename) + 2;
813 newpath = malloc(newpath_len);
814 snprintf(newpath, newpath_len, "%s!%s",
815 config.c_nodename, msg->cm_fields['P']);
816 free(msg->cm_fields['P']);
817 msg->cm_fields['P'] = newpath;
820 * Determine if this message is set to be deleted
821 * after sending out on the network
823 if (msg->cm_fields['S'] != NULL) {
824 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
825 delete_after_send = 1;
829 /* Now send it to every node */
830 if (sc->ignet_push_shares != NULL)
831 for (mptr = sc->ignet_push_shares; mptr != NULL;
836 /* Check for valid node name */
837 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
838 CtdlLogPrintf(CTDL_ERR, "Invalid node <%s>\n", mptr->remote_nodename);
842 /* Check for split horizon */
843 CtdlLogPrintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
844 bang = num_tokens(msg->cm_fields['P'], '!');
845 if (bang > 1) for (i=0; i<(bang-1); ++i) {
846 extract_token(buf, msg->cm_fields['P'], i, '!', sizeof buf);
847 CtdlLogPrintf(CTDL_DEBUG, "Compare <%s> to <%s>\n",
848 buf, mptr->remote_nodename) ;
849 if (!strcasecmp(buf, mptr->remote_nodename)) {
851 CtdlLogPrintf(CTDL_DEBUG, "Not sending to %s\n",
852 mptr->remote_nodename);
855 CtdlLogPrintf(CTDL_DEBUG, "Sending to %s\n", mptr->remote_nodename);
859 /* Send the message */
863 * Force the message to appear in the correct room
864 * on the far end by setting the C field correctly
866 if (msg->cm_fields['C'] != NULL) {
867 free(msg->cm_fields['C']);
869 if (!IsEmptyStr(mptr->remote_roomname)) {
870 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
873 msg->cm_fields['C'] = strdup(CC->room.QRname);
876 /* serialize it for transmission */
877 serialize_message(&sermsg, msg);
878 if (sermsg.len > 0) {
880 /* write it to the spool file */
881 snprintf(filename, sizeof filename,"%s/%s",
883 mptr->remote_nodename);
884 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
885 fp = fopen(filename, "ab");
892 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
895 /* free the serialized version */
901 CtdlFreeMessage(msg);
904 /* update lastsent */
905 sc->lastsent = msgnum;
907 /* Delete this message if delete-after-send is set */
908 if (delete_after_send) {
909 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
915 int read_spoolcontrol_file(SpoolControl **scc, char *filename)
921 char roomname[ROOMNAMELEN];
924 int skipthisline = 0;
925 namelist *nptr = NULL;
926 maplist *mptr = NULL;
929 fp = fopen(filename, "r");
933 sc = malloc(sizeof(SpoolControl));
934 memset(sc, 0, sizeof(SpoolControl));
937 while (fgets(buf, sizeof buf, fp) != NULL) {
938 buf[strlen(buf)-1] = 0;
940 extract_token(instr, buf, 0, '|', sizeof instr);
941 if (!strcasecmp(instr, "lastsent")) {
942 sc->lastsent = extract_long(buf, 1);
944 else if (!strcasecmp(instr, "listrecp")) {
946 malloc(sizeof(namelist));
947 nptr->next = sc->listrecps;
948 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
949 sc->listrecps = nptr;
951 else if (!strcasecmp(instr, "participate")) {
953 malloc(sizeof(namelist));
954 nptr->next = sc->participates;
955 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
956 sc->participates = nptr;
958 else if (!strcasecmp(instr, "digestrecp")) {
960 malloc(sizeof(namelist));
961 nptr->next = sc->digestrecps;
962 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
963 sc->digestrecps = nptr;
965 else if (!strcasecmp(instr, "ignet_push_share")) {
966 extract_token(nodename, buf, 1, '|', sizeof nodename);
967 extract_token(roomname, buf, 2, '|', sizeof roomname);
968 mptr = (maplist *) malloc(sizeof(maplist));
969 mptr->next = sc->ignet_push_shares;
970 strcpy(mptr->remote_nodename, nodename);
971 strcpy(mptr->remote_roomname, roomname);
972 sc->ignet_push_shares = mptr;
975 /* Preserve 'other' lines ... *unless* they happen to
976 * be subscribe/unsubscribe pendings with expired
980 if (!strncasecmp(buf, "subpending|", 11)) {
981 if (time(NULL) - extract_long(buf, 4) > EXP) {
985 if (!strncasecmp(buf, "unsubpending|", 13)) {
986 if (time(NULL) - extract_long(buf, 3) > EXP) {
991 if (skipthisline == 0) {
992 linesize = strlen(buf);
993 sc->misc = realloc(sc->misc,
994 (miscsize + linesize + 2) );
995 sprintf(&sc->misc[miscsize], "%s\n", buf);
996 miscsize = miscsize + linesize + 1;
1006 void free_spoolcontrol_struct(SpoolControl **scc)
1009 namelist *nptr = NULL;
1010 maplist *mptr = NULL;
1013 while (sc->listrecps != NULL) {
1014 nptr = sc->listrecps->next;
1015 free(sc->listrecps);
1016 sc->listrecps = nptr;
1018 /* Do the same for digestrecps */
1019 while (sc->digestrecps != NULL) {
1020 nptr = sc->digestrecps->next;
1021 free(sc->digestrecps);
1022 sc->digestrecps = nptr;
1024 /* Do the same for participates */
1025 while (sc->participates != NULL) {
1026 nptr = sc->participates->next;
1027 free(sc->participates);
1028 sc->participates = nptr;
1030 while (sc->ignet_push_shares != NULL) {
1031 mptr = sc->ignet_push_shares->next;
1032 free(sc->ignet_push_shares);
1033 sc->ignet_push_shares = mptr;
1040 int writenfree_spoolcontrol_file(SpoolControl **scc, char *filename)
1044 namelist *nptr = NULL;
1045 maplist *mptr = NULL;
1048 fp = fopen(filename, "w");
1050 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
1051 filename, strerror(errno));
1052 free_spoolcontrol_struct(scc);
1055 fprintf(fp, "lastsent|%ld\n", sc->lastsent);
1057 /* Write out the listrecps while freeing from memory at the
1058 * same time. Am I clever or what? :)
1060 while (sc->listrecps != NULL) {
1061 fprintf(fp, "listrecp|%s\n", sc->listrecps->name);
1062 nptr = sc->listrecps->next;
1063 free(sc->listrecps);
1064 sc->listrecps = nptr;
1066 /* Do the same for digestrecps */
1067 while (sc->digestrecps != NULL) {
1068 fprintf(fp, "digestrecp|%s\n", sc->digestrecps->name);
1069 nptr = sc->digestrecps->next;
1070 free(sc->digestrecps);
1071 sc->digestrecps = nptr;
1073 /* Do the same for participates */
1074 while (sc->participates != NULL) {
1075 fprintf(fp, "participate|%s\n", sc->participates->name);
1076 nptr = sc->participates->next;
1077 free(sc->participates);
1078 sc->participates = nptr;
1080 while (sc->ignet_push_shares != NULL) {
1081 fprintf(fp, "ignet_push_share|%s", sc->ignet_push_shares->remote_nodename);
1082 if (!IsEmptyStr(sc->ignet_push_shares->remote_roomname)) {
1083 fprintf(fp, "|%s", sc->ignet_push_shares->remote_roomname);
1086 mptr = sc->ignet_push_shares->next;
1087 free(sc->ignet_push_shares);
1088 sc->ignet_push_shares = mptr;
1090 if (sc->misc != NULL) {
1091 fwrite(sc->misc, strlen(sc->misc), 1, fp);
1101 int is_recipient(SpoolControl *sc, const char *Name)
1107 nptr = sc->listrecps;
1108 while (nptr != NULL) {
1109 if (strncmp(Name, nptr->name, len)==0)
1113 /* Do the same for digestrecps */
1114 nptr = sc->digestrecps;
1115 while (nptr != NULL) {
1116 if (strncmp(Name, nptr->name, len)==0)
1120 /* Do the same for participates */
1121 nptr = sc->participates;
1122 while (nptr != NULL) {
1123 if (strncmp(Name, nptr->name, len)==0)
1132 * Batch up and send all outbound traffic from the current room
1134 void network_spoolout_room(char *room_to_spool) {
1136 char filename[PATH_MAX];
1141 * If the room doesn't exist, don't try to perform its networking tasks.
1142 * Normally this should never happen, but once in a while maybe a room gets
1143 * queued for networking and then deleted before it can happen.
1145 if (CtdlGetRoom(&CC->room, room_to_spool) != 0) {
1146 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
1150 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1151 begin_critical_section(S_NETCONFIGS);
1153 /* Only do net processing for rooms that have netconfigs */
1154 if (!read_spoolcontrol_file(&sc, filename))
1156 end_critical_section(S_NETCONFIGS);
1159 CtdlLogPrintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
1161 /* If there are digest recipients, we have to build a digest */
1162 if (sc->digestrecps != NULL) {
1163 sc->digestfp = tmpfile();
1164 fprintf(sc->digestfp, "Content-type: text/plain\n\n");
1167 /* Do something useful */
1168 CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
1169 network_spool_msg, sc);
1171 /* If we wrote a digest, deliver it and then close it */
1172 snprintf(buf, sizeof buf, "room_%s@%s",
1173 CC->room.QRname, config.c_fqdn);
1174 for (i=0; buf[i]; ++i) {
1175 buf[i] = tolower(buf[i]);
1176 if (isspace(buf[i])) buf[i] = '_';
1178 if (sc->digestfp != NULL) {
1179 fprintf(sc->digestfp, " -----------------------------------"
1180 "------------------------------------"
1182 "You are subscribed to the '%s' "
1184 "To post to the list: %s\n",
1185 CC->room.QRname, buf
1187 network_deliver_digest(sc); /* deliver and close */
1190 /* Now rewrite the config file */
1191 writenfree_spoolcontrol_file (&sc, filename);
1192 end_critical_section(S_NETCONFIGS);
1198 * Send the *entire* contents of the current room to one specific network node,
1199 * ignoring anything we know about which messages have already undergone
1200 * network processing. This can be used to bring a new node into sync.
1202 int network_sync_to(char *target_node) {
1204 int num_spooled = 0;
1210 char filename[PATH_MAX];
1213 /* Grab the configuration line we're looking for */
1214 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1215 begin_critical_section(S_NETCONFIGS);
1216 fp = fopen(filename, "r");
1218 end_critical_section(S_NETCONFIGS);
1221 while (fgets(buf, sizeof buf, fp) != NULL) {
1222 buf[strlen(buf)-1] = 0;
1223 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1224 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1225 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1226 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1227 && (!strcasecmp(sc_node, target_node)) ) {
1230 /* Concise syntax because we don't need a full linked-list */
1231 memset(&sc, 0, sizeof(SpoolControl));
1232 sc.ignet_push_shares = (maplist *)
1233 malloc(sizeof(maplist));
1234 sc.ignet_push_shares->next = NULL;
1235 safestrncpy(sc.ignet_push_shares->remote_nodename,
1237 sizeof sc.ignet_push_shares->remote_nodename);
1238 safestrncpy(sc.ignet_push_shares->remote_roomname,
1240 sizeof sc.ignet_push_shares->remote_roomname);
1244 end_critical_section(S_NETCONFIGS);
1246 if (!found_node) return(-1);
1248 /* Send ALL messages */
1249 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
1250 network_spool_msg, &sc);
1252 /* Concise cleanup because we know there's only one node in the sc */
1253 free(sc.ignet_push_shares);
1255 CtdlLogPrintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1256 num_spooled, target_node);
1257 return(num_spooled);
1262 * Implements the NSYN command
1264 void cmd_nsyn(char *argbuf) {
1266 char target_node[256];
1268 if (CtdlAccessCheck(ac_aide)) return;
1270 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1271 num_spooled = network_sync_to(target_node);
1272 if (num_spooled >= 0) {
1273 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1276 cprintf("%d No such room/node share exists.\n",
1277 ERROR + ROOM_NOT_FOUND);
1284 * Batch up and send all outbound traffic from the current room
1286 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1287 struct RoomProcList *ptr;
1289 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1290 if (ptr == NULL) return;
1292 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1293 begin_critical_section(S_RPLIST);
1296 end_critical_section(S_RPLIST);
1299 void destroy_network_queue_room(void)
1301 struct RoomProcList *cur, *p;
1302 NetMap *nmcur, *nmp;
1305 begin_critical_section(S_RPLIST);
1313 end_critical_section(S_RPLIST);
1316 while (nmcur != NULL)
1323 if (working_ignetcfg != NULL)
1324 free (working_ignetcfg);
1325 working_ignetcfg = NULL;
1330 * Learn topology from path fields
1332 void network_learn_topology(char *node, char *path) {
1336 strcpy(nexthop, "");
1338 if (num_tokens(path, '!') < 3) return;
1339 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1340 if (!strcasecmp(nmptr->nodename, node)) {
1341 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1342 nmptr->lastcontact = time(NULL);
1348 /* If we got here then it's not in the map, so add it. */
1349 nmptr = (NetMap *) malloc(sizeof (NetMap));
1350 strcpy(nmptr->nodename, node);
1351 nmptr->lastcontact = time(NULL);
1352 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1353 nmptr->next = the_netmap;
1362 * Bounce a message back to the sender
1364 void network_bounce(struct CtdlMessage *msg, char *reason) {
1365 char *oldpath = NULL;
1367 char bouncesource[SIZ];
1368 char recipient[SIZ];
1369 struct recptypes *valid = NULL;
1370 char force_room[ROOMNAMELEN];
1371 static int serialnum = 0;
1374 CtdlLogPrintf(CTDL_DEBUG, "entering network_bounce()\n");
1376 if (msg == NULL) return;
1378 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1381 * Give it a fresh message ID
1383 if (msg->cm_fields['I'] != NULL) {
1384 free(msg->cm_fields['I']);
1386 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1387 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1388 msg->cm_fields['I'] = strdup(buf);
1391 * FIXME ... right now we're just sending a bounce; we really want to
1392 * include the text of the bounced message.
1394 if (msg->cm_fields['M'] != NULL) {
1395 free(msg->cm_fields['M']);
1397 msg->cm_fields['M'] = strdup(reason);
1398 msg->cm_format_type = 0;
1401 * Turn the message around
1403 if (msg->cm_fields['R'] == NULL) {
1404 free(msg->cm_fields['R']);
1407 if (msg->cm_fields['D'] == NULL) {
1408 free(msg->cm_fields['D']);
1411 snprintf(recipient, sizeof recipient, "%s@%s",
1412 msg->cm_fields['A'], msg->cm_fields['N']);
1414 if (msg->cm_fields['A'] == NULL) {
1415 free(msg->cm_fields['A']);
1418 if (msg->cm_fields['N'] == NULL) {
1419 free(msg->cm_fields['N']);
1422 if (msg->cm_fields['U'] == NULL) {
1423 free(msg->cm_fields['U']);
1426 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1427 msg->cm_fields['N'] = strdup(config.c_nodename);
1428 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1430 /* prepend our node to the path */
1431 if (msg->cm_fields['P'] != NULL) {
1432 oldpath = msg->cm_fields['P'];
1433 msg->cm_fields['P'] = NULL;
1436 oldpath = strdup("unknown_user");
1438 size = strlen(oldpath) + SIZ;
1439 msg->cm_fields['P'] = malloc(size);
1440 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1443 /* Now submit the message */
1444 valid = validate_recipients(recipient, NULL, 0);
1445 if (valid != NULL) if (valid->num_error != 0) {
1446 free_recipients(valid);
1449 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1450 strcpy(force_room, config.c_aideroom);
1453 strcpy(force_room, "");
1455 if ( (valid == NULL) && IsEmptyStr(force_room) ) {
1456 strcpy(force_room, config.c_aideroom);
1458 CtdlSubmitMsg(msg, valid, force_room, 0);
1461 if (valid != NULL) free_recipients(valid);
1462 CtdlFreeMessage(msg);
1463 CtdlLogPrintf(CTDL_DEBUG, "leaving network_bounce()\n");
1470 * Process a buffer containing a single message from a single file
1471 * from the inbound queue
1473 void network_process_buffer(char *buffer, long size) {
1474 struct CtdlMessage *msg = NULL;
1477 struct recptypes *recp = NULL;
1478 char target_room[ROOMNAMELEN];
1479 struct ser_ret sermsg;
1480 char *oldpath = NULL;
1481 char filename[PATH_MAX];
1484 unsigned char firstbyte;
1485 unsigned char lastbyte;
1487 CtdlLogPrintf(CTDL_DEBUG, "network_process_buffer() processing %ld bytes\n", size);
1489 /* Validate just a little bit. First byte should be FF and * last byte should be 00. */
1490 firstbyte = buffer[0];
1491 lastbyte = buffer[size-1];
1492 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1493 CtdlLogPrintf(CTDL_ERR, "Corrupt message ignored. Length=%ld, firstbyte = %d, lastbyte = %d\n",
1494 size, firstbyte, lastbyte);
1498 /* Set default target room to trash */
1499 strcpy(target_room, TWITROOM);
1501 /* Load the message into memory */
1502 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1503 memset(msg, 0, sizeof(struct CtdlMessage));
1504 msg->cm_magic = CTDLMESSAGE_MAGIC;
1505 msg->cm_anon_type = buffer[1];
1506 msg->cm_format_type = buffer[2];
1508 for (pos = 3; pos < size; ++pos) {
1509 field = buffer[pos];
1510 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1511 pos = pos + strlen(&buffer[(int)pos]);
1514 /* Check for message routing */
1515 if (msg->cm_fields['D'] != NULL) {
1516 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1518 /* route the message */
1519 strcpy(nexthop, "");
1520 if (is_valid_node(nexthop, NULL, msg->cm_fields['D']) == 0) {
1521 /* prepend our node to the path */
1522 if (msg->cm_fields['P'] != NULL) {
1523 oldpath = msg->cm_fields['P'];
1524 msg->cm_fields['P'] = NULL;
1527 oldpath = strdup("unknown_user");
1529 size = strlen(oldpath) + SIZ;
1530 msg->cm_fields['P'] = malloc(size);
1531 snprintf(msg->cm_fields['P'], size, "%s!%s",
1532 config.c_nodename, oldpath);
1535 /* serialize the message */
1536 serialize_message(&sermsg, msg);
1539 if (IsEmptyStr(nexthop)) {
1540 strcpy(nexthop, msg->cm_fields['D']);
1547 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
1548 fp = fopen(filename, "ab");
1555 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1558 CtdlFreeMessage(msg);
1562 else { /* invalid destination node name */
1565 "A message you sent could not be delivered due to an invalid destination node"
1566 " name. Please check the address and try sending the message again.\n");
1575 * Check to see if we already have a copy of this message, and
1576 * abort its processing if so. (We used to post a warning to Aide>
1577 * every time this happened, but the network is now so densely
1578 * connected that it's inevitable.)
1580 if (network_usetable(msg) != 0) {
1581 CtdlFreeMessage(msg);
1585 /* Learn network topology from the path */
1586 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1587 network_learn_topology(msg->cm_fields['N'], msg->cm_fields['P']);
1590 /* Is the sending node giving us a very persuasive suggestion about
1591 * which room this message should be saved in? If so, go with that.
1593 if (msg->cm_fields['C'] != NULL) {
1594 safestrncpy(target_room, msg->cm_fields['C'], sizeof target_room);
1597 /* Otherwise, does it have a recipient? If so, validate it... */
1598 else if (msg->cm_fields['R'] != NULL) {
1599 recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
1600 if (recp != NULL) if (recp->num_error != 0) {
1602 "A message you sent could not be delivered due to an invalid address.\n"
1603 "Please check the address and try sending the message again.\n");
1605 free_recipients(recp);
1606 CtdlLogPrintf(CTDL_DEBUG, "Bouncing message due to invalid recipient address.\n");
1609 strcpy(target_room, ""); /* no target room if mail */
1612 /* Our last shot at finding a home for this message is to see if
1613 * it has the O field (Originating room) set.
1615 else if (msg->cm_fields['O'] != NULL) {
1616 safestrncpy(target_room, msg->cm_fields['O'], sizeof target_room);
1619 /* Strip out fields that are only relevant during transit */
1620 if (msg->cm_fields['D'] != NULL) {
1621 free(msg->cm_fields['D']);
1622 msg->cm_fields['D'] = NULL;
1624 if (msg->cm_fields['C'] != NULL) {
1625 free(msg->cm_fields['C']);
1626 msg->cm_fields['C'] = NULL;
1629 /* save the message into a room */
1630 if (PerformNetprocHooks(msg, target_room) == 0) {
1631 msg->cm_flags = CM_SKIP_HOOKS;
1632 CtdlSubmitMsg(msg, recp, target_room, 0);
1634 CtdlFreeMessage(msg);
1635 free_recipients(recp);
1640 * Process a single message from a single file from the inbound queue
1642 void network_process_message(FILE *fp, long msgstart, long msgend) {
1647 hold_pos = ftell(fp);
1648 size = msgend - msgstart + 1;
1649 buffer = malloc(size);
1650 if (buffer != NULL) {
1651 fseek(fp, msgstart, SEEK_SET);
1652 fread(buffer, size, 1, fp);
1653 network_process_buffer(buffer, size);
1657 fseek(fp, hold_pos, SEEK_SET);
1662 * Process a single file from the inbound queue
1664 void network_process_file(char *filename) {
1666 long msgstart = (-1L);
1667 long msgend = (-1L);
1672 fp = fopen(filename, "rb");
1674 CtdlLogPrintf(CTDL_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
1678 fseek(fp, 0L, SEEK_END);
1679 CtdlLogPrintf(CTDL_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
1682 /* Look for messages in the data stream and break them out */
1683 while (ch = getc(fp), ch >= 0) {
1686 if (msgstart >= 0L) {
1687 msgend = msgcur - 1;
1688 network_process_message(fp, msgstart, msgend);
1696 msgend = msgcur - 1;
1697 if (msgstart >= 0L) {
1698 network_process_message(fp, msgstart, msgend);
1707 * Process anything in the inbound queue
1709 void network_do_spoolin(void) {
1712 struct stat statbuf;
1713 char filename[PATH_MAX];
1714 static time_t last_spoolin_mtime = 0L;
1717 * Check the spoolin directory's modification time. If it hasn't
1718 * been touched, we don't need to scan it.
1720 if (stat(ctdl_netin_dir, &statbuf)) return;
1721 if (statbuf.st_mtime == last_spoolin_mtime) {
1722 CtdlLogPrintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1725 last_spoolin_mtime = statbuf.st_mtime;
1726 CtdlLogPrintf(CTDL_DEBUG, "network: processing inbound queue\n");
1729 * Ok, there's something interesting in there, so scan it.
1731 dp = opendir(ctdl_netin_dir);
1732 if (dp == NULL) return;
1734 while (d = readdir(dp), d != NULL) {
1735 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1741 network_process_file(filename);
1749 * Delete any files in the outbound queue that were intended
1750 * to be sent to nodes which no longer exist.
1752 void network_purge_spoolout(void) {
1755 char filename[PATH_MAX];
1759 dp = opendir(ctdl_netout_dir);
1760 if (dp == NULL) return;
1762 while (d = readdir(dp), d != NULL) {
1763 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1771 strcpy(nexthop, "");
1772 i = is_valid_node(nexthop, NULL, d->d_name);
1774 if ( (i != 0) || !IsEmptyStr(nexthop) ) {
1785 * receive network spool from the remote system
1787 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 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];
2007 if (network_talking_to(node, NTT_CHECK)) return;
2008 network_talking_to(node, NTT_ADD);
2009 CtdlLogPrintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
2011 sock = sock_connect(host, port, "tcp");
2013 CtdlLogPrintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
2014 network_talking_to(node, NTT_REMOVE);
2018 CtdlLogPrintf(CTDL_DEBUG, "Connected!\n");
2020 /* Read the server greeting */
2021 if (sock_getln(sock, buf, sizeof buf) < 0) goto bail;
2022 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2024 /* Check that the remote is who we think it is and warn the Aide if not */
2025 extract_token (connected_to, buf, 1, ' ', sizeof connected_to);
2026 if (strcmp(connected_to, node))
2028 snprintf (err_buf, sizeof(err_buf), "Connected to node \"%s\" but I was expecting to connect to node \"%s\".", connected_to, node);
2029 CtdlLogPrintf(CTDL_ERR, "%s\n", err_buf);
2030 CtdlAideMessage(err_buf, "Network error");
2033 /* We're talking to the correct node. Now identify ourselves. */
2034 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
2035 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2036 if (sock_puts(sock, buf) <0) goto bail;
2037 if (sock_getln(sock, buf, sizeof buf) < 0) goto bail;
2038 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2039 if (buf[0] != '2') goto bail;
2041 /* At this point we are authenticated. */
2042 if (!CtdlThreadCheckStop())
2043 receive_spool(sock, node);
2044 if (!CtdlThreadCheckStop())
2045 transmit_spool(sock, node);
2048 sock_puts(sock, "QUIT");
2049 bail: sock_close(sock);
2050 network_talking_to(node, NTT_REMOVE);
2056 * Poll other Citadel nodes and transfer inbound/outbound network data.
2057 * Set "full" to nonzero to force a poll of every node, or to zero to poll
2058 * only nodes to which we have data to send.
2060 void network_poll_other_citadel_nodes(int full_poll) {
2068 char spoolfile[256];
2070 if (working_ignetcfg == NULL) {
2071 CtdlLogPrintf(CTDL_DEBUG, "No nodes defined - not polling\n");
2075 /* Use the string tokenizer to grab one line at a time */
2076 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
2077 if(CtdlThreadCheckStop())
2079 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
2080 extract_token(node, linebuf, 0, '|', sizeof node);
2081 extract_token(secret, linebuf, 1, '|', sizeof secret);
2082 extract_token(host, linebuf, 2, '|', sizeof host);
2083 extract_token(port, linebuf, 3, '|', sizeof port);
2084 if ( !IsEmptyStr(node) && !IsEmptyStr(secret)
2085 && !IsEmptyStr(host) && !IsEmptyStr(port)) {
2093 if (access(spoolfile, R_OK) == 0) {
2098 network_poll_node(node, secret, host, port);
2109 * It's ok if these directories already exist. Just fail silently.
2111 void create_spool_dirs(void) {
2112 mkdir(ctdl_spool_dir, 0700);
2113 chown(ctdl_spool_dir, CTDLUID, (-1));
2114 mkdir(ctdl_netin_dir, 0700);
2115 chown(ctdl_netin_dir, CTDLUID, (-1));
2116 mkdir(ctdl_netout_dir, 0700);
2117 chown(ctdl_netout_dir, CTDLUID, (-1));
2125 * network_do_queue()
2127 * Run through the rooms doing various types of network stuff.
2129 void *network_do_queue(void *args) {
2130 static time_t last_run = 0L;
2131 struct RoomProcList *ptr;
2132 int full_processing = 1;
2133 struct CitContext networkerCC;
2135 /* Give the networker its own private CitContext */
2136 CtdlFillSystemContext(&networkerCC, "network");
2137 citthread_setspecific(MyConKey, (void *)&networkerCC );
2140 * Run the full set of processing tasks no more frequently
2141 * than once every n seconds
2143 if ( (time(NULL) - last_run) < config.c_net_freq ) {
2144 full_processing = 0;
2145 CtdlLogPrintf(CTDL_DEBUG, "Network full processing in %ld seconds.\n", config.c_net_freq - (time(NULL)- last_run));
2149 * This is a simple concurrency check to make sure only one queue run
2150 * is done at a time. We could do this with a mutex, but since we
2151 * don't really require extremely fine granularity here, we'll do it
2152 * with a static variable instead.
2154 if (doing_queue) return NULL;
2157 /* Load the IGnet Configuration into memory */
2158 load_working_ignetcfg();
2161 * Poll other Citadel nodes. Maybe. If "full_processing" is set
2162 * then we poll everyone. Otherwise we only poll nodes we have stuff
2165 network_poll_other_citadel_nodes(full_processing);
2168 * Load the network map and filter list into memory.
2171 filterlist = load_filter_list();
2174 * Go ahead and run the queue
2176 if (full_processing && !CtdlThreadCheckStop()) {
2177 CtdlLogPrintf(CTDL_DEBUG, "network: loading outbound queue\n");
2178 CtdlForEachRoom(network_queue_room, NULL);
2181 if (rplist != NULL) {
2182 CtdlLogPrintf(CTDL_DEBUG, "network: running outbound queue\n");
2183 while (rplist != NULL && !CtdlThreadCheckStop()) {
2184 char spoolroomname[ROOMNAMELEN];
2185 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
2186 begin_critical_section(S_RPLIST);
2188 /* pop this record off the list */
2190 rplist = rplist->next;
2193 /* invalidate any duplicate entries to prevent double processing */
2194 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
2195 if (!strcasecmp(ptr->name, spoolroomname)) {
2200 end_critical_section(S_RPLIST);
2201 if (spoolroomname[0] != 0) {
2202 network_spoolout_room(spoolroomname);
2207 /* If there is anything in the inbound queue, process it */
2208 if (!CtdlThreadCheckStop())
2209 network_do_spoolin();
2211 /* Save the network map back to disk */
2212 write_network_map();
2214 /* Free the filter list in memory */
2215 free_filter_list(filterlist);
2218 network_purge_spoolout();
2220 CtdlLogPrintf(CTDL_DEBUG, "network: queue run completed\n");
2222 if (full_processing) {
2223 last_run = time(NULL);
2227 if (!CtdlThreadCheckStop()) // Only reschedule if system is not stopping
2228 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK, network_do_queue, NULL, time(NULL) + 60);
2230 CtdlLogPrintf(CTDL_DEBUG, "network: Task STOPPED.\n");
2236 * cmd_netp() - authenticate to the server as another Citadel node polling
2237 * for network traffic
2239 void cmd_netp(char *cmdbuf)
2250 extract_token(node, cmdbuf, 0, '|', sizeof node);
2251 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2254 CtdlLogPrintf(CTDL_WARNING, "Network node <%s> refused - spooling\n", node);
2255 cprintf("%d spooling - try again in a few minutes\n", ERROR + RESOURCE_BUSY);
2259 /* load the IGnet Configuration to check node validity */
2260 load_working_ignetcfg();
2261 v = is_valid_node(nexthop, secret, node);
2264 snprintf(err_buf, sizeof err_buf,
2265 "An unknown Citadel server called \"%s\" attempted to connect from %s [%s].\n",
2266 node, CC->cs_host, CC->cs_addr
2268 CtdlLogPrintf(CTDL_WARNING, err_buf);
2269 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2270 CtdlAideMessage(err_buf, "IGNet Networking.");
2274 if (strcasecmp(pass, secret)) {
2275 snprintf(err_buf, sizeof err_buf,
2276 "A Citadel server at %s [%s] failed to authenticate as network node \"%s\".\n",
2277 CC->cs_host, CC->cs_addr, node
2279 CtdlLogPrintf(CTDL_WARNING, err_buf);
2280 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2281 CtdlAideMessage(err_buf, "IGNet Networking.");
2285 if (network_talking_to(node, NTT_CHECK)) {
2286 CtdlLogPrintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2287 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2291 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2292 network_talking_to(node, NTT_ADD);
2293 CtdlLogPrintf(CTDL_NOTICE, "Network node <%s> logged in from %s [%s]\n",
2294 CC->net_node, CC->cs_host, CC->cs_addr
2296 cprintf("%d authenticated as network node '%s'\n", CIT_OK, CC->net_node);
2300 int network_room_handler (struct ctdlroom *room)
2302 network_queue_room(room, NULL);
2308 * Module entry point
2310 CTDL_MODULE_INIT(network)
2314 create_spool_dirs();
2315 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2316 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2317 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2318 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2319 CtdlRegisterRoomHook(network_room_handler);
2320 CtdlRegisterCleanupHook(destroy_network_queue_room);
2323 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK, network_do_queue, NULL, 0);
2324 /* return our Subversion id for the Log */