4 * This module handles shared rooms, inter-Citadel mail, and outbound
5 * mailing list processing.
7 * Copyright (C) 2000-2005 by Art Cancro and others.
8 * This code is released under the terms of the GNU General Public License.
10 * ** NOTE ** A word on the S_NETCONFIGS semaphore:
11 * This is a fairly high-level type of critical section. It ensures that no
12 * two threads work on the netconfigs files at the same time. Since we do
13 * so many things inside these, here are the rules:
14 * 1. begin_critical_section(S_NETCONFIGS) *before* begin_ any others.
15 * 2. Do *not* perform any I/O with the client during these sections.
20 * Duration of time (in seconds) after which pending list subscribe/unsubscribe
21 * requests that have not been confirmed will be deleted.
23 #define EXP 259200 /* three days */
35 #include <sys/types.h>
37 #if TIME_WITH_SYS_TIME
38 # include <sys/time.h>
42 # include <sys/time.h>
51 #include <libcitadel.h>
54 #include "citserver.h"
62 #include "internet_addressing.h"
63 #include "serv_network.h"
64 #include "clientsocket.h"
66 #include "citadel_dirs.h"
74 #include "ctdl_module.h"
78 /* Nonzero while we are doing network processing */
79 static int doing_queue = 0;
82 * When we do network processing, it's accomplished in two passes; one to
83 * gather a list of rooms and one to actually do them. It's ok that rplist
84 * is global; we have a mutex that keeps it safe.
86 struct RoomProcList *rplist = NULL;
89 * We build a map of network nodes during processing.
91 NetMap *the_netmap = NULL;
92 int netmap_changed = 0;
93 char *working_ignetcfg = NULL;
96 * Load or refresh the Citadel network (IGnet) configuration for this node.
98 void load_working_ignetcfg(void) {
102 cfg = CtdlGetSysConfig(IGNETCFG);
107 oldcfg = working_ignetcfg;
108 working_ignetcfg = cfg;
109 if (oldcfg != NULL) {
119 * Keep track of what messages to reject
121 FilterList *load_filter_list(void) {
122 char *serialized_list = NULL;
125 FilterList *newlist = NULL;
128 serialized_list = CtdlGetSysConfig(FILTERLIST);
129 if (serialized_list == NULL) return(NULL); /* if null, no entries */
131 /* Use the string tokenizer to grab one line at a time */
132 for (i=0; i<num_tokens(serialized_list, '\n'); ++i) {
133 extract_token(buf, serialized_list, i, '\n', sizeof buf);
134 nptr = (FilterList *) malloc(sizeof(FilterList));
135 extract_token(nptr->fl_user, buf, 0, '|', sizeof nptr->fl_user);
136 striplt(nptr->fl_user);
137 extract_token(nptr->fl_room, buf, 1, '|', sizeof nptr->fl_room);
138 striplt(nptr->fl_room);
139 extract_token(nptr->fl_node, buf, 2, '|', sizeof nptr->fl_node);
140 striplt(nptr->fl_node);
142 /* Cowardly refuse to add an any/any/any entry that would
143 * end up filtering every single message.
145 if (IsEmptyStr(nptr->fl_user) &&
146 IsEmptyStr(nptr->fl_room) &&
147 IsEmptyStr(nptr->fl_node)) {
151 nptr->next = newlist;
156 free(serialized_list);
161 void free_filter_list(FilterList *fl) {
162 if (fl == NULL) return;
163 free_filter_list(fl->next);
170 * Check the use table. This is a list of messages which have recently
171 * arrived on the system. It is maintained and queried to prevent the same
172 * message from being entered into the database multiple times if it happens
173 * to arrive multiple times by accident.
175 int network_usetable(struct CtdlMessage *msg) {
178 struct cdbdata *cdbut;
181 /* Bail out if we can't generate a message ID */
185 if (msg->cm_fields['I'] == NULL) {
188 if (IsEmptyStr(msg->cm_fields['I'])) {
192 /* Generate the message ID */
193 strcpy(msgid, msg->cm_fields['I']);
194 if (haschar(msgid, '@') == 0) {
196 if (msg->cm_fields['N'] != NULL) {
197 strcat(msgid, msg->cm_fields['N']);
204 cdbut = cdb_fetch(CDB_USETABLE, msgid, strlen(msgid));
210 /* If we got to this point, it's unique: add it. */
211 strcpy(ut.ut_msgid, msgid);
212 ut.ut_timestamp = time(NULL);
213 cdb_store(CDB_USETABLE, msgid, strlen(msgid),
214 &ut, sizeof(struct UseTable) );
220 * Read the network map from its configuration file into memory.
222 void read_network_map(void) {
223 char *serialized_map = NULL;
228 serialized_map = CtdlGetSysConfig(IGNETMAP);
229 if (serialized_map == NULL) return; /* if null, no entries */
231 /* Use the string tokenizer to grab one line at a time */
232 for (i=0; i<num_tokens(serialized_map, '\n'); ++i) {
233 extract_token(buf, serialized_map, i, '\n', sizeof buf);
234 nmptr = (NetMap *) malloc(sizeof(NetMap));
235 extract_token(nmptr->nodename, buf, 0, '|', sizeof nmptr->nodename);
236 nmptr->lastcontact = extract_long(buf, 1);
237 extract_token(nmptr->nexthop, buf, 2, '|', sizeof nmptr->nexthop);
238 nmptr->next = the_netmap;
242 free(serialized_map);
248 * Write the network map from memory back to the configuration file.
250 void write_network_map(void) {
251 char *serialized_map = NULL;
255 if (netmap_changed) {
256 serialized_map = strdup("");
258 if (the_netmap != NULL) {
259 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
260 serialized_map = realloc(serialized_map,
261 (strlen(serialized_map)+SIZ) );
262 if (!IsEmptyStr(nmptr->nodename)) {
263 snprintf(&serialized_map[strlen(serialized_map)],
267 (long)nmptr->lastcontact,
273 CtdlPutSysConfig(IGNETMAP, serialized_map);
274 free(serialized_map);
277 /* Now free the list */
278 while (the_netmap != NULL) {
279 nmptr = the_netmap->next;
289 * Check the network map and determine whether the supplied node name is
290 * valid. If it is not a neighbor node, supply the name of a neighbor node
291 * which is the next hop. If it *is* a neighbor node, we also fill in the
294 int is_valid_node(char *nexthop, char *secret, char *node) {
306 * First try the neighbor nodes
308 if (working_ignetcfg == NULL) {
309 CtdlLogPrintf(CTDL_ERR, "working_ignetcfg is NULL!\n");
310 if (nexthop != NULL) {
317 if (nexthop != NULL) {
321 /* Use the string tokenizer to grab one line at a time */
322 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
323 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
324 extract_token(buf, linebuf, 0, '|', sizeof buf);
325 if (!strcasecmp(buf, node)) {
326 if (nexthop != NULL) {
329 if (secret != NULL) {
330 extract_token(secret, linebuf, 1, '|', 256);
337 return(retval); /* yup, it's a direct neighbor */
341 * If we get to this point we have to see if we know the next hop
343 if (the_netmap != NULL) {
344 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
345 if (!strcasecmp(nmptr->nodename, node)) {
346 if (nexthop != NULL) {
347 strcpy(nexthop, nmptr->nexthop);
355 * If we get to this point, the supplied node name is bogus.
357 CtdlLogPrintf(CTDL_ERR, "Invalid node name <%s>\n", node);
365 void cmd_gnet(char *argbuf) {
366 char filename[PATH_MAX];
370 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
371 /* users can edit the netconfigs for their own mailbox rooms */
373 else if (CtdlAccessCheck(ac_room_aide)) return;
375 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
376 cprintf("%d Network settings for room #%ld <%s>\n",
378 CC->room.QRnumber, CC->room.QRname);
380 fp = fopen(filename, "r");
382 while (fgets(buf, sizeof buf, fp) != NULL) {
383 buf[strlen(buf)-1] = 0;
384 cprintf("%s\n", buf);
393 void cmd_snet(char *argbuf) {
394 char tempfilename[PATH_MAX];
395 char filename[PATH_MAX];
401 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
402 /* users can edit the netconfigs for their own mailbox rooms */
404 else if (CtdlAccessCheck(ac_room_aide)) return;
406 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
407 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
409 fp = fopen(tempfilename, "w");
411 cprintf("%d Cannot open %s: %s\n",
412 ERROR + INTERNAL_ERROR,
417 cprintf("%d %s\n", SEND_LISTING, tempfilename);
418 while (client_getln(buf, sizeof buf) >= 0 && strcmp(buf, "000")) {
419 fprintf(fp, "%s\n", buf);
423 /* Now copy the temp file to its permanent location.
424 * (We copy instead of link because they may be on different filesystems)
426 begin_critical_section(S_NETCONFIGS);
427 fp = fopen(tempfilename, "r");
429 newfp = fopen(filename, "w");
431 while (fgets(buf, sizeof buf, fp) != NULL) {
432 fprintf(newfp, "%s", buf);
438 end_critical_section(S_NETCONFIGS);
439 unlink(tempfilename);
444 * Deliver digest messages
446 void network_deliver_digest(SpoolControl *sc) {
449 struct CtdlMessage *msg = NULL;
452 size_t recps_len = SIZ;
453 struct recptypes *valid;
456 if (sc->num_msgs_spooled < 1) {
457 fclose(sc->digestfp);
462 msg = malloc(sizeof(struct CtdlMessage));
463 memset(msg, 0, sizeof(struct CtdlMessage));
464 msg->cm_magic = CTDLMESSAGE_MAGIC;
465 msg->cm_format_type = FMT_RFC822;
466 msg->cm_anon_type = MES_NORMAL;
468 sprintf(buf, "%ld", time(NULL));
469 msg->cm_fields['T'] = strdup(buf);
470 msg->cm_fields['A'] = strdup(CC->room.QRname);
471 snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
472 msg->cm_fields['U'] = strdup(buf);
473 sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
474 for (i=0; buf[i]; ++i) {
475 if (isspace(buf[i])) buf[i]='_';
476 buf[i] = tolower(buf[i]);
478 msg->cm_fields['F'] = strdup(buf);
479 msg->cm_fields['R'] = strdup(buf);
481 /* Set the 'List-ID' header */
482 msg->cm_fields['L'] = malloc(1024);
483 snprintf(msg->cm_fields['L'], 1024,
484 "%s <%ld.list-id.%s>",
491 * Go fetch the contents of the digest
493 fseek(sc->digestfp, 0L, SEEK_END);
494 msglen = ftell(sc->digestfp);
496 msg->cm_fields['M'] = malloc(msglen + 1);
497 fseek(sc->digestfp, 0L, SEEK_SET);
498 fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
499 msg->cm_fields['M'][msglen] = 0;
501 fclose(sc->digestfp);
504 /* Now generate the delivery instructions */
507 * Figure out how big a buffer we need to allocate
509 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
510 recps_len = recps_len + strlen(nptr->name) + 2;
513 recps = malloc(recps_len);
516 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
523 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
524 if (nptr != sc->digestrecps) {
527 strcat(recps, nptr->name);
530 /* Now submit the message */
531 valid = validate_recipients(recps, NULL, 0);
533 CtdlSubmitMsg(msg, valid, NULL, 0);
534 CtdlFreeMessage(msg);
535 free_recipients(valid);
540 * Deliver list messages to everyone on the list ... efficiently
542 void network_deliver_list(struct CtdlMessage *msg, SpoolControl *sc) {
544 size_t recps_len = SIZ;
545 struct recptypes *valid;
548 /* Don't do this if there were no recipients! */
549 if (sc->listrecps == NULL) return;
551 /* Now generate the delivery instructions */
554 * Figure out how big a buffer we need to allocate
556 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
557 recps_len = recps_len + strlen(nptr->name) + 2;
560 recps = malloc(recps_len);
563 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
570 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
571 if (nptr != sc->listrecps) {
574 strcat(recps, nptr->name);
577 /* Now submit the message */
578 valid = validate_recipients(recps, NULL, 0);
580 CtdlSubmitMsg(msg, valid, NULL, 0);
581 free_recipients(valid);
582 /* Do not call CtdlFreeMessage(msg) here; the caller will free it. */
589 * Spools out one message from the list.
591 void network_spool_msg(long msgnum, void *userdata) {
594 char *newpath = NULL;
595 size_t instr_len = SIZ;
596 struct CtdlMessage *msg = NULL;
599 struct ser_ret sermsg;
601 char filename[PATH_MAX];
605 int delete_after_send = 0; /* Set to 1 to delete after spooling */
606 int ok_to_participate = 0;
607 struct recptypes *valid;
609 sc = (SpoolControl *)userdata;
612 * Process mailing list recipients
615 if (sc->listrecps != NULL) {
616 /* Fetch the message. We're going to need to modify it
617 * in order to insert the [list name] in it, etc.
619 msg = CtdlFetchMessage(msgnum, 1);
622 /* Set the 'List-ID' header */
623 if (msg->cm_fields['L'] != NULL) {
624 free(msg->cm_fields['L']);
626 msg->cm_fields['L'] = malloc(1024);
627 snprintf(msg->cm_fields['L'], 1024,
628 "%s <%ld.list-id.%s>",
634 /* Prepend "[List name]" to the subject */
635 if (msg->cm_fields['U'] == NULL) {
636 msg->cm_fields['U'] = strdup("(no subject)");
638 snprintf(buf, sizeof buf, "[%s] %s", CC->room.QRname, msg->cm_fields['U']);
639 free(msg->cm_fields['U']);
640 msg->cm_fields['U'] = strdup(buf);
642 /* Set the recipient of the list message to the
643 * email address of the room itself.
644 * FIXME ... I want to be able to pick any address
646 if (msg->cm_fields['R'] != NULL) {
647 free(msg->cm_fields['R']);
649 msg->cm_fields['R'] = malloc(256);
650 snprintf(msg->cm_fields['R'], 256,
651 "room_%s@%s", CC->room.QRname,
653 for (i=0; msg->cm_fields['R'][i]; ++i) {
654 if (isspace(msg->cm_fields['R'][i])) {
655 msg->cm_fields['R'][i] = '_';
659 /* Handle delivery */
660 network_deliver_list(msg, sc);
661 CtdlFreeMessage(msg);
666 * Process digest recipients
668 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
669 msg = CtdlFetchMessage(msgnum, 1);
671 fprintf(sc->digestfp, " -----------------------------------"
672 "------------------------------------"
674 fprintf(sc->digestfp, "From: ");
675 if (msg->cm_fields['A'] != NULL) {
676 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
678 if (msg->cm_fields['F'] != NULL) {
679 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
681 else if (msg->cm_fields['N'] != NULL) {
682 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
684 fprintf(sc->digestfp, "\n");
685 if (msg->cm_fields['U'] != NULL) {
686 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
689 CC->redirect_buffer = malloc(SIZ);
690 CC->redirect_len = 0;
691 CC->redirect_alloc = SIZ;
693 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
694 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0, 0);
696 striplt(CC->redirect_buffer);
697 fprintf(sc->digestfp, "\n%s\n", CC->redirect_buffer);
699 free(CC->redirect_buffer);
700 CC->redirect_buffer = NULL;
701 CC->redirect_len = 0;
702 CC->redirect_alloc = 0;
704 sc->num_msgs_spooled += 1;
710 * Process client-side list participations for this room
713 if (sc->participates != NULL) {
714 msg = CtdlFetchMessage(msgnum, 1);
717 /* Only send messages which originated on our own Citadel
718 * network, otherwise we'll end up sending the remote
719 * mailing list's messages back to it, which is rude...
721 ok_to_participate = 0;
722 if (msg->cm_fields['N'] != NULL) {
723 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
724 ok_to_participate = 1;
726 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
727 ok_to_participate = 1;
730 if (ok_to_participate) {
731 if (msg->cm_fields['F'] != NULL) {
732 free(msg->cm_fields['F']);
734 msg->cm_fields['F'] = malloc(SIZ);
735 /* Replace the Internet email address of the actual
736 * author with the email address of the room itself,
737 * so the remote listserv doesn't reject us.
738 * FIXME ... I want to be able to pick any address
740 snprintf(msg->cm_fields['F'], SIZ,
741 "room_%s@%s", CC->room.QRname,
743 for (i=0; msg->cm_fields['F'][i]; ++i) {
744 if (isspace(msg->cm_fields['F'][i])) {
745 msg->cm_fields['F'][i] = '_';
750 * Figure out how big a buffer we need to allocate
752 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
754 if (msg->cm_fields['R'] == NULL) {
755 free(msg->cm_fields['R']);
757 msg->cm_fields['R'] = strdup(nptr->name);
759 valid = validate_recipients(nptr->name, NULL, 0);
760 CtdlSubmitMsg(msg, valid, "", 0);
761 free_recipients(valid);
765 CtdlFreeMessage(msg);
770 * Process IGnet push shares
772 msg = CtdlFetchMessage(msgnum, 1);
776 /* Prepend our node name to the Path field whenever
777 * sending a message to another IGnet node
779 if (msg->cm_fields['P'] == NULL) {
780 msg->cm_fields['P'] = strdup("username");
782 newpath_len = strlen(msg->cm_fields['P']) +
783 strlen(config.c_nodename) + 2;
784 newpath = malloc(newpath_len);
785 snprintf(newpath, newpath_len, "%s!%s",
786 config.c_nodename, msg->cm_fields['P']);
787 free(msg->cm_fields['P']);
788 msg->cm_fields['P'] = newpath;
791 * Determine if this message is set to be deleted
792 * after sending out on the network
794 if (msg->cm_fields['S'] != NULL) {
795 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
796 delete_after_send = 1;
800 /* Now send it to every node */
801 if (sc->ignet_push_shares != NULL)
802 for (mptr = sc->ignet_push_shares; mptr != NULL;
807 /* Check for valid node name */
808 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
809 CtdlLogPrintf(CTDL_ERR, "Invalid node <%s>\n", mptr->remote_nodename);
813 /* Check for split horizon */
814 CtdlLogPrintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
815 bang = num_tokens(msg->cm_fields['P'], '!');
816 if (bang > 1) for (i=0; i<(bang-1); ++i) {
817 extract_token(buf, msg->cm_fields['P'], i, '!', sizeof buf);
818 CtdlLogPrintf(CTDL_DEBUG, "Compare <%s> to <%s>\n",
819 buf, mptr->remote_nodename) ;
820 if (!strcasecmp(buf, mptr->remote_nodename)) {
822 CtdlLogPrintf(CTDL_DEBUG, "Not sending to %s\n",
823 mptr->remote_nodename);
826 CtdlLogPrintf(CTDL_DEBUG, "Sending to %s\n", mptr->remote_nodename);
830 /* Send the message */
834 * Force the message to appear in the correct room
835 * on the far end by setting the C field correctly
837 if (msg->cm_fields['C'] != NULL) {
838 free(msg->cm_fields['C']);
840 if (!IsEmptyStr(mptr->remote_roomname)) {
841 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
844 msg->cm_fields['C'] = strdup(CC->room.QRname);
847 /* serialize it for transmission */
848 serialize_message(&sermsg, msg);
849 if (sermsg.len > 0) {
851 /* write it to the spool file */
852 snprintf(filename, sizeof filename,"%s/%s",
854 mptr->remote_nodename);
855 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
856 fp = fopen(filename, "ab");
863 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
866 /* free the serialized version */
872 CtdlFreeMessage(msg);
875 /* update lastsent */
876 sc->lastsent = msgnum;
878 /* Delete this message if delete-after-send is set */
879 if (delete_after_send) {
880 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
886 int read_spoolcontrol_file(SpoolControl **scc, char *filename)
892 char roomname[ROOMNAMELEN];
895 int skipthisline = 0;
896 namelist *nptr = NULL;
897 maplist *mptr = NULL;
900 fp = fopen(filename, "r");
904 sc = malloc(sizeof(SpoolControl));
905 memset(sc, 0, sizeof(SpoolControl));
908 while (fgets(buf, sizeof buf, fp) != NULL) {
909 buf[strlen(buf)-1] = 0;
911 extract_token(instr, buf, 0, '|', sizeof instr);
912 if (!strcasecmp(instr, "lastsent")) {
913 sc->lastsent = extract_long(buf, 1);
915 else if (!strcasecmp(instr, "listrecp")) {
917 malloc(sizeof(namelist));
918 nptr->next = sc->listrecps;
919 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
920 sc->listrecps = nptr;
922 else if (!strcasecmp(instr, "participate")) {
924 malloc(sizeof(namelist));
925 nptr->next = sc->participates;
926 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
927 sc->participates = nptr;
929 else if (!strcasecmp(instr, "digestrecp")) {
931 malloc(sizeof(namelist));
932 nptr->next = sc->digestrecps;
933 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
934 sc->digestrecps = nptr;
936 else if (!strcasecmp(instr, "ignet_push_share")) {
937 extract_token(nodename, buf, 1, '|', sizeof nodename);
938 extract_token(roomname, buf, 2, '|', sizeof roomname);
939 mptr = (maplist *) malloc(sizeof(maplist));
940 mptr->next = sc->ignet_push_shares;
941 strcpy(mptr->remote_nodename, nodename);
942 strcpy(mptr->remote_roomname, roomname);
943 sc->ignet_push_shares = mptr;
946 /* Preserve 'other' lines ... *unless* they happen to
947 * be subscribe/unsubscribe pendings with expired
951 if (!strncasecmp(buf, "subpending|", 11)) {
952 if (time(NULL) - extract_long(buf, 4) > EXP) {
956 if (!strncasecmp(buf, "unsubpending|", 13)) {
957 if (time(NULL) - extract_long(buf, 3) > EXP) {
962 if (skipthisline == 0) {
963 linesize = strlen(buf);
964 sc->misc = realloc(sc->misc,
965 (miscsize + linesize + 2) );
966 sprintf(&sc->misc[miscsize], "%s\n", buf);
967 miscsize = miscsize + linesize + 1;
977 void free_spoolcontrol_struct(SpoolControl **scc)
980 namelist *nptr = NULL;
981 maplist *mptr = NULL;
984 while (sc->listrecps != NULL) {
985 nptr = sc->listrecps->next;
987 sc->listrecps = nptr;
989 /* Do the same for digestrecps */
990 while (sc->digestrecps != NULL) {
991 nptr = sc->digestrecps->next;
992 free(sc->digestrecps);
993 sc->digestrecps = nptr;
995 /* Do the same for participates */
996 while (sc->participates != NULL) {
997 nptr = sc->participates->next;
998 free(sc->participates);
999 sc->participates = nptr;
1001 while (sc->ignet_push_shares != NULL) {
1002 mptr = sc->ignet_push_shares->next;
1003 free(sc->ignet_push_shares);
1004 sc->ignet_push_shares = mptr;
1011 int writenfree_spoolcontrol_file(SpoolControl **scc, char *filename)
1015 namelist *nptr = NULL;
1016 maplist *mptr = NULL;
1019 fp = fopen(filename, "w");
1021 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
1022 filename, strerror(errno));
1023 free_spoolcontrol_struct(scc);
1026 fprintf(fp, "lastsent|%ld\n", sc->lastsent);
1028 /* Write out the listrecps while freeing from memory at the
1029 * same time. Am I clever or what? :)
1031 while (sc->listrecps != NULL) {
1032 fprintf(fp, "listrecp|%s\n", sc->listrecps->name);
1033 nptr = sc->listrecps->next;
1034 free(sc->listrecps);
1035 sc->listrecps = nptr;
1037 /* Do the same for digestrecps */
1038 while (sc->digestrecps != NULL) {
1039 fprintf(fp, "digestrecp|%s\n", sc->digestrecps->name);
1040 nptr = sc->digestrecps->next;
1041 free(sc->digestrecps);
1042 sc->digestrecps = nptr;
1044 /* Do the same for participates */
1045 while (sc->participates != NULL) {
1046 fprintf(fp, "participate|%s\n", sc->participates->name);
1047 nptr = sc->participates->next;
1048 free(sc->participates);
1049 sc->participates = nptr;
1051 while (sc->ignet_push_shares != NULL) {
1052 fprintf(fp, "ignet_push_share|%s", sc->ignet_push_shares->remote_nodename);
1053 if (!IsEmptyStr(sc->ignet_push_shares->remote_roomname)) {
1054 fprintf(fp, "|%s", sc->ignet_push_shares->remote_roomname);
1057 mptr = sc->ignet_push_shares->next;
1058 free(sc->ignet_push_shares);
1059 sc->ignet_push_shares = mptr;
1061 if (sc->misc != NULL) {
1062 fwrite(sc->misc, strlen(sc->misc), 1, fp);
1072 int is_recipient(SpoolControl *sc, const char *Name)
1078 nptr = sc->listrecps;
1079 while (nptr != NULL) {
1080 if (strncmp(Name, nptr->name, len)==0)
1084 /* Do the same for digestrecps */
1085 nptr = sc->digestrecps;
1086 while (nptr != NULL) {
1087 if (strncmp(Name, nptr->name, len)==0)
1091 /* Do the same for participates */
1092 nptr = sc->participates;
1093 while (nptr != NULL) {
1094 if (strncmp(Name, nptr->name, len)==0)
1103 * Batch up and send all outbound traffic from the current room
1105 void network_spoolout_room(char *room_to_spool) {
1107 char filename[PATH_MAX];
1112 * If the room doesn't exist, don't try to perform its networking tasks.
1113 * Normally this should never happen, but once in a while maybe a room gets
1114 * queued for networking and then deleted before it can happen.
1116 if (getroom(&CC->room, room_to_spool) != 0) {
1117 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
1121 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1122 begin_critical_section(S_NETCONFIGS);
1124 /* Only do net processing for rooms that have netconfigs */
1125 if (!read_spoolcontrol_file(&sc, filename))
1127 end_critical_section(S_NETCONFIGS);
1130 CtdlLogPrintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
1132 /* If there are digest recipients, we have to build a digest */
1133 if (sc->digestrecps != NULL) {
1134 sc->digestfp = tmpfile();
1135 fprintf(sc->digestfp, "Content-type: text/plain\n\n");
1138 /* Do something useful */
1139 CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
1140 network_spool_msg, sc);
1142 /* If we wrote a digest, deliver it and then close it */
1143 snprintf(buf, sizeof buf, "room_%s@%s",
1144 CC->room.QRname, config.c_fqdn);
1145 for (i=0; buf[i]; ++i) {
1146 buf[i] = tolower(buf[i]);
1147 if (isspace(buf[i])) buf[i] = '_';
1149 if (sc->digestfp != NULL) {
1150 fprintf(sc->digestfp, " -----------------------------------"
1151 "------------------------------------"
1153 "You are subscribed to the '%s' "
1155 "To post to the list: %s\n",
1156 CC->room.QRname, buf
1158 network_deliver_digest(sc); /* deliver and close */
1161 /* Now rewrite the config file */
1162 writenfree_spoolcontrol_file (&sc, filename);
1163 end_critical_section(S_NETCONFIGS);
1169 * Send the *entire* contents of the current room to one specific network node,
1170 * ignoring anything we know about which messages have already undergone
1171 * network processing. This can be used to bring a new node into sync.
1173 int network_sync_to(char *target_node) {
1175 int num_spooled = 0;
1181 char filename[PATH_MAX];
1184 /* Grab the configuration line we're looking for */
1185 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1186 begin_critical_section(S_NETCONFIGS);
1187 fp = fopen(filename, "r");
1189 end_critical_section(S_NETCONFIGS);
1192 while (fgets(buf, sizeof buf, fp) != NULL) {
1193 buf[strlen(buf)-1] = 0;
1194 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1195 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1196 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1197 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1198 && (!strcasecmp(sc_node, target_node)) ) {
1201 /* Concise syntax because we don't need a full linked-list */
1202 memset(&sc, 0, sizeof(SpoolControl));
1203 sc.ignet_push_shares = (maplist *)
1204 malloc(sizeof(maplist));
1205 sc.ignet_push_shares->next = NULL;
1206 safestrncpy(sc.ignet_push_shares->remote_nodename,
1208 sizeof sc.ignet_push_shares->remote_nodename);
1209 safestrncpy(sc.ignet_push_shares->remote_roomname,
1211 sizeof sc.ignet_push_shares->remote_roomname);
1215 end_critical_section(S_NETCONFIGS);
1217 if (!found_node) return(-1);
1219 /* Send ALL messages */
1220 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
1221 network_spool_msg, &sc);
1223 /* Concise cleanup because we know there's only one node in the sc */
1224 free(sc.ignet_push_shares);
1226 CtdlLogPrintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1227 num_spooled, target_node);
1228 return(num_spooled);
1233 * Implements the NSYN command
1235 void cmd_nsyn(char *argbuf) {
1237 char target_node[256];
1239 if (CtdlAccessCheck(ac_aide)) return;
1241 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1242 num_spooled = network_sync_to(target_node);
1243 if (num_spooled >= 0) {
1244 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1247 cprintf("%d No such room/node share exists.\n",
1248 ERROR + ROOM_NOT_FOUND);
1255 * Batch up and send all outbound traffic from the current room
1257 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1258 struct RoomProcList *ptr;
1260 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1261 if (ptr == NULL) return;
1263 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1264 begin_critical_section(S_RPLIST);
1267 end_critical_section(S_RPLIST);
1270 void destroy_network_queue_room(void)
1272 struct RoomProcList *cur, *p;
1273 NetMap *nmcur, *nmp;
1276 begin_critical_section(S_RPLIST);
1284 end_critical_section(S_RPLIST);
1287 while (nmcur != NULL)
1294 if (working_ignetcfg != NULL)
1295 free (working_ignetcfg);
1296 working_ignetcfg = NULL;
1301 * Learn topology from path fields
1303 void network_learn_topology(char *node, char *path) {
1307 strcpy(nexthop, "");
1309 if (num_tokens(path, '!') < 3) return;
1310 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1311 if (!strcasecmp(nmptr->nodename, node)) {
1312 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1313 nmptr->lastcontact = time(NULL);
1319 /* If we got here then it's not in the map, so add it. */
1320 nmptr = (NetMap *) malloc(sizeof (NetMap));
1321 strcpy(nmptr->nodename, node);
1322 nmptr->lastcontact = time(NULL);
1323 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1324 nmptr->next = the_netmap;
1333 * Bounce a message back to the sender
1335 void network_bounce(struct CtdlMessage *msg, char *reason) {
1336 char *oldpath = NULL;
1338 char bouncesource[SIZ];
1339 char recipient[SIZ];
1340 struct recptypes *valid = NULL;
1341 char force_room[ROOMNAMELEN];
1342 static int serialnum = 0;
1345 CtdlLogPrintf(CTDL_DEBUG, "entering network_bounce()\n");
1347 if (msg == NULL) return;
1349 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1352 * Give it a fresh message ID
1354 if (msg->cm_fields['I'] != NULL) {
1355 free(msg->cm_fields['I']);
1357 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1358 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1359 msg->cm_fields['I'] = strdup(buf);
1362 * FIXME ... right now we're just sending a bounce; we really want to
1363 * include the text of the bounced message.
1365 if (msg->cm_fields['M'] != NULL) {
1366 free(msg->cm_fields['M']);
1368 msg->cm_fields['M'] = strdup(reason);
1369 msg->cm_format_type = 0;
1372 * Turn the message around
1374 if (msg->cm_fields['R'] == NULL) {
1375 free(msg->cm_fields['R']);
1378 if (msg->cm_fields['D'] == NULL) {
1379 free(msg->cm_fields['D']);
1382 snprintf(recipient, sizeof recipient, "%s@%s",
1383 msg->cm_fields['A'], msg->cm_fields['N']);
1385 if (msg->cm_fields['A'] == NULL) {
1386 free(msg->cm_fields['A']);
1389 if (msg->cm_fields['N'] == NULL) {
1390 free(msg->cm_fields['N']);
1393 if (msg->cm_fields['U'] == NULL) {
1394 free(msg->cm_fields['U']);
1397 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1398 msg->cm_fields['N'] = strdup(config.c_nodename);
1399 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1401 /* prepend our node to the path */
1402 if (msg->cm_fields['P'] != NULL) {
1403 oldpath = msg->cm_fields['P'];
1404 msg->cm_fields['P'] = NULL;
1407 oldpath = strdup("unknown_user");
1409 size = strlen(oldpath) + SIZ;
1410 msg->cm_fields['P'] = malloc(size);
1411 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1414 /* Now submit the message */
1415 valid = validate_recipients(recipient, NULL, 0);
1416 if (valid != NULL) if (valid->num_error != 0) {
1417 free_recipients(valid);
1420 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1421 strcpy(force_room, config.c_aideroom);
1424 strcpy(force_room, "");
1426 if ( (valid == NULL) && IsEmptyStr(force_room) ) {
1427 strcpy(force_room, config.c_aideroom);
1429 CtdlSubmitMsg(msg, valid, force_room, 0);
1432 if (valid != NULL) free_recipients(valid);
1433 CtdlFreeMessage(msg);
1434 CtdlLogPrintf(CTDL_DEBUG, "leaving network_bounce()\n");
1441 * Process a buffer containing a single message from a single file
1442 * from the inbound queue
1444 void network_process_buffer(char *buffer, long size) {
1445 struct CtdlMessage *msg = NULL;
1448 struct recptypes *recp = NULL;
1449 char target_room[ROOMNAMELEN];
1450 struct ser_ret sermsg;
1451 char *oldpath = NULL;
1452 char filename[PATH_MAX];
1455 unsigned char firstbyte;
1456 unsigned char lastbyte;
1458 /* Validate just a little bit. First byte should be FF and * last byte should be 00. */
1459 firstbyte = buffer[0];
1460 lastbyte = buffer[size-1];
1461 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1462 CtdlLogPrintf(CTDL_ERR, "Corrupt message ignored. Length=%ld, firstbyte = %d, lastbyte = %d\n",
1463 size, firstbyte, lastbyte);
1467 /* Set default target room to trash */
1468 strcpy(target_room, TWITROOM);
1470 /* Load the message into memory */
1471 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1472 memset(msg, 0, sizeof(struct CtdlMessage));
1473 msg->cm_magic = CTDLMESSAGE_MAGIC;
1474 msg->cm_anon_type = buffer[1];
1475 msg->cm_format_type = buffer[2];
1477 for (pos = 3; pos < size; ++pos) {
1478 field = buffer[pos];
1479 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1480 pos = pos + strlen(&buffer[(int)pos]);
1483 /* Check for message routing */
1484 if (msg->cm_fields['D'] != NULL) {
1485 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1487 /* route the message */
1488 strcpy(nexthop, "");
1489 if (is_valid_node(nexthop, NULL, msg->cm_fields['D']) == 0) {
1490 /* prepend our node to the path */
1491 if (msg->cm_fields['P'] != NULL) {
1492 oldpath = msg->cm_fields['P'];
1493 msg->cm_fields['P'] = NULL;
1496 oldpath = strdup("unknown_user");
1498 size = strlen(oldpath) + SIZ;
1499 msg->cm_fields['P'] = malloc(size);
1500 snprintf(msg->cm_fields['P'], size, "%s!%s",
1501 config.c_nodename, oldpath);
1504 /* serialize the message */
1505 serialize_message(&sermsg, msg);
1508 if (IsEmptyStr(nexthop)) {
1509 strcpy(nexthop, msg->cm_fields['D']);
1516 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
1517 fp = fopen(filename, "ab");
1524 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1527 CtdlFreeMessage(msg);
1531 else { /* invalid destination node name */
1534 "A message you sent could not be delivered due to an invalid destination node"
1535 " name. Please check the address and try sending the message again.\n");
1544 * Check to see if we already have a copy of this message, and
1545 * abort its processing if so. (We used to post a warning to Aide>
1546 * every time this happened, but the network is now so densely
1547 * connected that it's inevitable.)
1549 if (network_usetable(msg) != 0) {
1550 CtdlFreeMessage(msg);
1554 /* Learn network topology from the path */
1555 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1556 network_learn_topology(msg->cm_fields['N'],
1557 msg->cm_fields['P']);
1560 /* Is the sending node giving us a very persuasive suggestion about
1561 * which room this message should be saved in? If so, go with that.
1563 if (msg->cm_fields['C'] != NULL) {
1564 safestrncpy(target_room,
1565 msg->cm_fields['C'],
1566 sizeof target_room);
1569 /* Otherwise, does it have a recipient? If so, validate it... */
1570 else if (msg->cm_fields['R'] != NULL) {
1571 recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
1572 if (recp != NULL) if (recp->num_error != 0) {
1574 "A message you sent could not be delivered due to an invalid address.\n"
1575 "Please check the address and try sending the message again.\n");
1577 free_recipients(recp);
1580 strcpy(target_room, ""); /* no target room if mail */
1583 /* Our last shot at finding a home for this message is to see if
1584 * it has the O field (Originating room) set.
1586 else if (msg->cm_fields['O'] != NULL) {
1587 safestrncpy(target_room,
1588 msg->cm_fields['O'],
1589 sizeof target_room);
1592 /* Strip out fields that are only relevant during transit */
1593 if (msg->cm_fields['D'] != NULL) {
1594 free(msg->cm_fields['D']);
1595 msg->cm_fields['D'] = NULL;
1597 if (msg->cm_fields['C'] != NULL) {
1598 free(msg->cm_fields['C']);
1599 msg->cm_fields['C'] = NULL;
1602 /* save the message into a room */
1603 if (PerformNetprocHooks(msg, target_room) == 0) {
1604 msg->cm_flags = CM_SKIP_HOOKS;
1605 CtdlSubmitMsg(msg, recp, target_room, 0);
1607 CtdlFreeMessage(msg);
1608 free_recipients(recp);
1613 * Process a single message from a single file from the inbound queue
1615 void network_process_message(FILE *fp, long msgstart, long msgend) {
1620 hold_pos = ftell(fp);
1621 size = msgend - msgstart + 1;
1622 buffer = malloc(size);
1623 if (buffer != NULL) {
1624 fseek(fp, msgstart, SEEK_SET);
1625 fread(buffer, size, 1, fp);
1626 network_process_buffer(buffer, size);
1630 fseek(fp, hold_pos, SEEK_SET);
1635 * Process a single file from the inbound queue
1637 void network_process_file(char *filename) {
1639 long msgstart = (-1L);
1640 long msgend = (-1L);
1645 fp = fopen(filename, "rb");
1647 CtdlLogPrintf(CTDL_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
1651 fseek(fp, 0L, SEEK_END);
1652 CtdlLogPrintf(CTDL_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
1655 /* Look for messages in the data stream and break them out */
1656 while (ch = getc(fp), ch >= 0) {
1659 if (msgstart >= 0L) {
1660 msgend = msgcur - 1;
1661 network_process_message(fp, msgstart, msgend);
1669 msgend = msgcur - 1;
1670 if (msgstart >= 0L) {
1671 network_process_message(fp, msgstart, msgend);
1680 * Process anything in the inbound queue
1682 void network_do_spoolin(void) {
1685 struct stat statbuf;
1686 char filename[PATH_MAX];
1687 static time_t last_spoolin_mtime = 0L;
1690 * Check the spoolin directory's modification time. If it hasn't
1691 * been touched, we don't need to scan it.
1693 if (stat(ctdl_netin_dir, &statbuf)) return;
1694 if (statbuf.st_mtime == last_spoolin_mtime) {
1695 CtdlLogPrintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1698 last_spoolin_mtime = statbuf.st_mtime;
1699 CtdlLogPrintf(CTDL_DEBUG, "network: processing inbound queue\n");
1702 * Ok, there's something interesting in there, so scan it.
1704 dp = opendir(ctdl_netin_dir);
1705 if (dp == NULL) return;
1707 while (d = readdir(dp), d != NULL) {
1708 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1714 network_process_file(filename);
1722 * Delete any files in the outbound queue that were intended
1723 * to be sent to nodes which no longer exist.
1725 void network_purge_spoolout(void) {
1728 char filename[PATH_MAX];
1732 dp = opendir(ctdl_netout_dir);
1733 if (dp == NULL) return;
1735 while (d = readdir(dp), d != NULL) {
1736 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1744 strcpy(nexthop, "");
1745 i = is_valid_node(nexthop, NULL, d->d_name);
1747 if ( (i != 0) || !IsEmptyStr(nexthop) ) {
1758 * receive network spool from the remote system
1760 void receive_spool(int sock, char *remote_nodename) {
1761 long download_len = 0L;
1762 long bytes_received = 0L;
1763 long bytes_copied = 0L;
1765 static char pbuf[IGNET_PACKET_SIZE];
1766 char tempfilename[PATH_MAX];
1767 char filename[PATH_MAX];
1771 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
1772 if (sock_puts(sock, "NDOP") < 0) return;
1773 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1774 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1775 if (buf[0] != '2') {
1778 download_len = extract_long(&buf[4], 0);
1780 bytes_received = 0L;
1781 fp = fopen(tempfilename, "w");
1783 CtdlLogPrintf(CTDL_CRIT, "cannot open download file locally: %s\n",
1788 while (bytes_received < download_len) {
1790 * If shutting down we can exit here and unlink the temp file.
1791 * this shouldn't loose us any messages.
1793 if (CtdlThreadCheckStop())
1796 unlink(tempfilename);
1799 snprintf(buf, sizeof buf, "READ %ld|%ld",
1801 ((download_len - bytes_received > IGNET_PACKET_SIZE)
1802 ? IGNET_PACKET_SIZE : (download_len - bytes_received)));
1803 if (sock_puts(sock, buf) < 0) {
1805 unlink(tempfilename);
1808 if (sock_getln(sock, buf, sizeof buf) < 0) {
1810 unlink(tempfilename);
1813 if (buf[0] == '6') {
1814 plen = extract_long(&buf[4], 0);
1815 if (sock_read(sock, pbuf, plen, 1) < 0) {
1817 unlink(tempfilename);
1820 fwrite((char *) pbuf, plen, 1, fp);
1821 bytes_received = bytes_received + plen;
1826 /** Last chance for shutdown exit */
1827 if (CtdlThreadCheckStop())
1829 unlink(tempfilename);
1832 if (sock_puts(sock, "CLOS") < 0) {
1833 unlink(tempfilename);
1837 * From here on we must complete or messages will get lost
1839 if (sock_getln(sock, buf, sizeof buf) < 0) {
1840 unlink(tempfilename);
1843 if (download_len > 0) {
1844 CtdlLogPrintf(CTDL_NOTICE, "Received %ld octets from <%s>\n", download_len, remote_nodename);
1846 CtdlLogPrintf(CTDL_DEBUG, "%s\n", buf);
1848 /* Now copy the temp file to its permanent location.
1849 * (We copy instead of link because they may be on different filesystems)
1851 begin_critical_section(S_NETSPOOL);
1859 fp = fopen(tempfilename, "r");
1861 newfp = fopen(filename, "w");
1862 if (newfp != NULL) {
1864 while (bytes_copied < download_len) {
1865 plen = download_len - bytes_copied;
1866 if (plen > sizeof buf) {
1869 fread(buf, plen, 1, fp);
1870 fwrite(buf, plen, 1, newfp);
1871 bytes_copied += plen;
1877 end_critical_section(S_NETSPOOL);
1878 unlink(tempfilename);
1884 * transmit network spool to the remote system
1886 void transmit_spool(int sock, char *remote_nodename)
1891 long bytes_to_write, thisblock, bytes_written;
1895 if (sock_puts(sock, "NUOP") < 0) return;
1896 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1897 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1898 if (buf[0] != '2') {
1902 snprintf(sfname, sizeof sfname,
1906 fd = open(sfname, O_RDONLY);
1908 if (errno != ENOENT) {
1909 CtdlLogPrintf(CTDL_CRIT, "cannot open upload file locally: %s\n",
1915 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
1916 bytes_to_write = plen;
1917 while (bytes_to_write > 0L) {
1918 /** Exit if shutting down */
1919 if (CtdlThreadCheckStop())
1925 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
1926 if (sock_puts(sock, buf) < 0) {
1930 if (sock_getln(sock, buf, sizeof buf) < 0) {
1934 thisblock = atol(&buf[4]);
1935 if (buf[0] == '7') {
1936 if (sock_write(sock, pbuf,
1937 (int) thisblock) < 0) {
1941 bytes_to_write -= thisblock;
1942 bytes_written += thisblock;
1951 /** Last chance for shutdown exit */
1952 if(CtdlThreadCheckStop())
1955 if (sock_puts(sock, "UCLS 1") < 0) return;
1957 * From here on we must complete or messages will get lost
1959 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1960 CtdlLogPrintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n",
1961 bytes_written, remote_nodename);
1962 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1963 if (buf[0] == '2') {
1964 CtdlLogPrintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
1972 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
1974 void network_poll_node(char *node, char *secret, char *host, char *port) {
1978 char connected_to[SIZ];
1980 if (network_talking_to(node, NTT_CHECK)) return;
1981 network_talking_to(node, NTT_ADD);
1982 CtdlLogPrintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
1984 sock = sock_connect(host, port, "tcp");
1986 CtdlLogPrintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
1987 network_talking_to(node, NTT_REMOVE);
1991 CtdlLogPrintf(CTDL_DEBUG, "Connected!\n");
1993 /* Read the server greeting */
1994 if (sock_getln(sock, buf, sizeof buf) < 0) goto bail;
1995 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
1997 /* Check that the remote is who we think it is and warn the Aide if not */
1998 extract_token (connected_to, buf, 1, ' ', sizeof connected_to);
1999 if (strcmp(connected_to, node))
2001 snprintf (err_buf, sizeof(err_buf), "Connected to node \"%s\" but I was expecting to connect to node \"%s\".", connected_to, node);
2002 aide_message(err_buf, "IGNet Networking error.");
2005 /* Identify ourselves */
2006 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
2007 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2008 if (sock_puts(sock, buf) <0) goto bail;
2009 if (sock_getln(sock, buf, sizeof buf) < 0) goto bail;
2010 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2011 if (buf[0] != '2') goto bail;
2013 /* At this point we are authenticated. */
2014 if (!CtdlThreadCheckStop())
2015 receive_spool(sock, node);
2016 if (!CtdlThreadCheckStop())
2017 transmit_spool(sock, node);
2019 sock_puts(sock, "QUIT");
2020 bail: sock_close(sock);
2021 network_talking_to(node, NTT_REMOVE);
2027 * Poll other Citadel nodes and transfer inbound/outbound network data.
2028 * Set "full" to nonzero to force a poll of every node, or to zero to poll
2029 * only nodes to which we have data to send.
2031 void network_poll_other_citadel_nodes(int full_poll) {
2039 char spoolfile[256];
2041 if (working_ignetcfg == NULL) {
2042 CtdlLogPrintf(CTDL_DEBUG, "No nodes defined - not polling\n");
2046 /* Use the string tokenizer to grab one line at a time */
2047 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
2048 if(CtdlThreadCheckStop())
2050 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
2051 extract_token(node, linebuf, 0, '|', sizeof node);
2052 extract_token(secret, linebuf, 1, '|', sizeof secret);
2053 extract_token(host, linebuf, 2, '|', sizeof host);
2054 extract_token(port, linebuf, 3, '|', sizeof port);
2055 if ( !IsEmptyStr(node) && !IsEmptyStr(secret)
2056 && !IsEmptyStr(host) && !IsEmptyStr(port)) {
2064 if (access(spoolfile, R_OK) == 0) {
2069 network_poll_node(node, secret, host, port);
2080 * It's ok if these directories already exist. Just fail silently.
2082 void create_spool_dirs(void) {
2083 mkdir(ctdl_spool_dir, 0700);
2084 chown(ctdl_spool_dir, CTDLUID, (-1));
2085 mkdir(ctdl_netin_dir, 0700);
2086 chown(ctdl_netin_dir, CTDLUID, (-1));
2087 mkdir(ctdl_netout_dir, 0700);
2088 chown(ctdl_netout_dir, CTDLUID, (-1));
2096 * network_do_queue()
2098 * Run through the rooms doing various types of network stuff.
2100 void *network_do_queue(void *args) {
2101 static time_t last_run = 0L;
2102 struct RoomProcList *ptr;
2103 int full_processing = 1;
2104 struct CitContext networkerCC;
2106 /* Give the networker its own private CitContext */
2107 CtdlFillSystemContext(&networkerCC, "network");
2108 citthread_setspecific(MyConKey, (void *)&networkerCC );
2111 * Run the full set of processing tasks no more frequently
2112 * than once every n seconds
2114 if ( (time(NULL) - last_run) < config.c_net_freq ) {
2115 full_processing = 0;
2116 CtdlLogPrintf(CTDL_DEBUG, "Network full processing in %ld seconds.\n", config.c_net_freq - (time(NULL)- last_run));
2120 * This is a simple concurrency check to make sure only one queue run
2121 * is done at a time. We could do this with a mutex, but since we
2122 * don't really require extremely fine granularity here, we'll do it
2123 * with a static variable instead.
2125 if (doing_queue) return NULL;
2128 /* Load the IGnet Configuration into memory */
2129 load_working_ignetcfg();
2132 * Poll other Citadel nodes. Maybe. If "full_processing" is set
2133 * then we poll everyone. Otherwise we only poll nodes we have stuff
2136 network_poll_other_citadel_nodes(full_processing);
2139 * Load the network map and filter list into memory.
2142 filterlist = load_filter_list();
2145 * Go ahead and run the queue
2147 if (full_processing && !CtdlThreadCheckStop()) {
2148 CtdlLogPrintf(CTDL_DEBUG, "network: loading outbound queue\n");
2149 ForEachRoom(network_queue_room, NULL);
2152 if (rplist != NULL) {
2153 CtdlLogPrintf(CTDL_DEBUG, "network: running outbound queue\n");
2154 while (rplist != NULL && !CtdlThreadCheckStop()) {
2155 char spoolroomname[ROOMNAMELEN];
2156 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
2157 begin_critical_section(S_RPLIST);
2159 /* pop this record off the list */
2161 rplist = rplist->next;
2164 /* invalidate any duplicate entries to prevent double processing */
2165 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
2166 if (!strcasecmp(ptr->name, spoolroomname)) {
2171 end_critical_section(S_RPLIST);
2172 if (spoolroomname[0] != 0) {
2173 network_spoolout_room(spoolroomname);
2178 /* If there is anything in the inbound queue, process it */
2179 if (!CtdlThreadCheckStop())
2180 network_do_spoolin();
2182 /* Save the network map back to disk */
2183 write_network_map();
2185 /* Free the filter list in memory */
2186 free_filter_list(filterlist);
2189 network_purge_spoolout();
2191 CtdlLogPrintf(CTDL_DEBUG, "network: queue run completed\n");
2193 if (full_processing) {
2194 last_run = time(NULL);
2198 if (!CtdlThreadCheckStop()) // Only reschedule if system is not stopping
2199 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK, network_do_queue, NULL, time(NULL) + 60);
2201 CtdlLogPrintf(CTDL_DEBUG, "network: Task STOPPED.\n");
2207 * cmd_netp() - authenticate to the server as another Citadel node polling
2208 * for network traffic
2210 void cmd_netp(char *cmdbuf)
2221 extract_token(node, cmdbuf, 0, '|', sizeof node);
2222 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2225 CtdlLogPrintf(CTDL_WARNING, "Network node <%s> refused - spooling", node);
2226 cprintf("%d spooling - try again in a few minutes\n",
2227 ERROR + RESOURCE_BUSY);
2231 /* load the IGnet Configuration to check node validity */
2232 load_working_ignetcfg();
2233 v = is_valid_node(nexthop, secret, node);
2236 snprintf (err_buf, sizeof(err_buf), "Unknown node <%s>\n", node);
2237 CtdlLogPrintf(CTDL_WARNING, err_buf);
2238 cprintf("%d authentication failed\n",
2239 ERROR + PASSWORD_REQUIRED);
2240 aide_message(err_buf, "IGNet Networking.");
2244 if (strcasecmp(pass, secret)) {
2245 snprintf (err_buf, sizeof(err_buf), "Bad password for network node <%s>", node);
2246 CtdlLogPrintf(CTDL_WARNING, err_buf);
2247 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2248 aide_message(err_buf, "IGNet Networking.");
2252 if (network_talking_to(node, NTT_CHECK)) {
2253 CtdlLogPrintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2254 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2258 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2259 network_talking_to(node, NTT_ADD);
2260 CtdlLogPrintf(CTDL_NOTICE, "Network node <%s> logged in\n", CC->net_node);
2261 cprintf("%d authenticated as network node '%s'\n", CIT_OK,
2265 int network_room_handler (struct ctdlroom *room)
2267 network_queue_room(room, NULL);
2272 * Module entry point
2274 CTDL_MODULE_INIT(network)
2278 create_spool_dirs();
2279 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2280 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2281 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2282 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2283 CtdlRegisterRoomHook(network_room_handler);
2284 CtdlRegisterCleanupHook(destroy_network_queue_room);
2287 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK, network_do_queue, NULL, 0);
2288 /* return our Subversion id for the Log */