4 * This module handles shared rooms, inter-Citadel mail, and outbound
5 * mailing list processing.
7 * Copyright (c) 2000-2010 by the citadel.org team
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * ** NOTE ** A word on the S_NETCONFIGS semaphore:
24 * This is a fairly high-level type of critical section. It ensures that no
25 * two threads work on the netconfigs files at the same time. Since we do
26 * so many things inside these, here are the rules:
27 * 1. begin_critical_section(S_NETCONFIGS) *before* begin_ any others.
28 * 2. Do *not* perform any I/O with the client during these sections.
33 * Duration of time (in seconds) after which pending list subscribe/unsubscribe
34 * requests that have not been confirmed will be deleted.
36 #define EXP 259200 /* three days */
48 #include <sys/types.h>
50 #if TIME_WITH_SYS_TIME
51 # include <sys/time.h>
55 # include <sys/time.h>
64 #include <libcitadel.h>
67 #include "citserver.h"
73 #include "internet_addressing.h"
74 #include "serv_network.h"
75 #include "clientsocket.h"
77 #include "citadel_dirs.h"
86 #include "ctdl_module.h"
90 /* Nonzero while we are doing network processing */
91 static int doing_queue = 0;
94 * When we do network processing, it's accomplished in two passes; one to
95 * gather a list of rooms and one to actually do them. It's ok that rplist
96 * is global; we have a mutex that keeps it safe.
98 struct RoomProcList *rplist = NULL;
101 * We build a map of network nodes during processing.
103 NetMap *the_netmap = NULL;
104 int netmap_changed = 0;
105 char *working_ignetcfg = NULL;
108 * Load or refresh the Citadel network (IGnet) configuration for this node.
110 void load_working_ignetcfg(void) {
114 cfg = CtdlGetSysConfig(IGNETCFG);
119 oldcfg = working_ignetcfg;
120 working_ignetcfg = cfg;
121 if (oldcfg != NULL) {
131 * Keep track of what messages to reject
133 FilterList *load_filter_list(void) {
134 char *serialized_list = NULL;
137 FilterList *newlist = NULL;
140 serialized_list = CtdlGetSysConfig(FILTERLIST);
141 if (serialized_list == NULL) return(NULL); /* if null, no entries */
143 /* Use the string tokenizer to grab one line at a time */
144 for (i=0; i<num_tokens(serialized_list, '\n'); ++i) {
145 extract_token(buf, serialized_list, i, '\n', sizeof buf);
146 nptr = (FilterList *) malloc(sizeof(FilterList));
147 extract_token(nptr->fl_user, buf, 0, '|', sizeof nptr->fl_user);
148 striplt(nptr->fl_user);
149 extract_token(nptr->fl_room, buf, 1, '|', sizeof nptr->fl_room);
150 striplt(nptr->fl_room);
151 extract_token(nptr->fl_node, buf, 2, '|', sizeof nptr->fl_node);
152 striplt(nptr->fl_node);
154 /* Cowardly refuse to add an any/any/any entry that would
155 * end up filtering every single message.
157 if (IsEmptyStr(nptr->fl_user) &&
158 IsEmptyStr(nptr->fl_room) &&
159 IsEmptyStr(nptr->fl_node)) {
163 nptr->next = newlist;
168 free(serialized_list);
173 void free_filter_list(FilterList *fl) {
174 if (fl == NULL) return;
175 free_filter_list(fl->next);
182 * Check the use table. This is a list of messages which have recently
183 * arrived on the system. It is maintained and queried to prevent the same
184 * message from being entered into the database multiple times if it happens
185 * to arrive multiple times by accident.
187 int network_usetable(struct CtdlMessage *msg) {
190 struct cdbdata *cdbut;
193 /* Bail out if we can't generate a message ID */
197 if (msg->cm_fields['I'] == NULL) {
200 if (IsEmptyStr(msg->cm_fields['I'])) {
204 /* Generate the message ID */
205 strcpy(msgid, msg->cm_fields['I']);
206 if (haschar(msgid, '@') == 0) {
208 if (msg->cm_fields['N'] != NULL) {
209 strcat(msgid, msg->cm_fields['N']);
216 cdbut = cdb_fetch(CDB_USETABLE, msgid, strlen(msgid));
219 CtdlLogPrintf(CTDL_DEBUG, "network_usetable() : we already have %s\n", msgid);
223 /* If we got to this point, it's unique: add it. */
224 strcpy(ut.ut_msgid, msgid);
225 ut.ut_timestamp = time(NULL);
226 cdb_store(CDB_USETABLE, msgid, strlen(msgid), &ut, sizeof(struct UseTable) );
232 * Read the network map from its configuration file into memory.
234 void read_network_map(void) {
235 char *serialized_map = NULL;
240 serialized_map = CtdlGetSysConfig(IGNETMAP);
241 if (serialized_map == NULL) return; /* if null, no entries */
243 /* Use the string tokenizer to grab one line at a time */
244 for (i=0; i<num_tokens(serialized_map, '\n'); ++i) {
245 extract_token(buf, serialized_map, i, '\n', sizeof buf);
246 nmptr = (NetMap *) malloc(sizeof(NetMap));
247 extract_token(nmptr->nodename, buf, 0, '|', sizeof nmptr->nodename);
248 nmptr->lastcontact = extract_long(buf, 1);
249 extract_token(nmptr->nexthop, buf, 2, '|', sizeof nmptr->nexthop);
250 nmptr->next = the_netmap;
254 free(serialized_map);
260 * Write the network map from memory back to the configuration file.
262 void write_network_map(void) {
263 char *serialized_map = NULL;
267 if (netmap_changed) {
268 serialized_map = strdup("");
270 if (the_netmap != NULL) {
271 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
272 serialized_map = realloc(serialized_map,
273 (strlen(serialized_map)+SIZ) );
274 if (!IsEmptyStr(nmptr->nodename)) {
275 snprintf(&serialized_map[strlen(serialized_map)],
279 (long)nmptr->lastcontact,
285 CtdlPutSysConfig(IGNETMAP, serialized_map);
286 free(serialized_map);
289 /* Now free the list */
290 while (the_netmap != NULL) {
291 nmptr = the_netmap->next;
301 * Check the network map and determine whether the supplied node name is
302 * valid. If it is not a neighbor node, supply the name of a neighbor node
303 * which is the next hop. If it *is* a neighbor node, we also fill in the
306 int is_valid_node(char *nexthop, char *secret, char *node) {
318 * First try the neighbor nodes
320 if (working_ignetcfg == NULL) {
321 CtdlLogPrintf(CTDL_ERR, "working_ignetcfg is NULL!\n");
322 if (nexthop != NULL) {
329 if (nexthop != NULL) {
333 /* Use the string tokenizer to grab one line at a time */
334 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
335 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
336 extract_token(buf, linebuf, 0, '|', sizeof buf);
337 if (!strcasecmp(buf, node)) {
338 if (nexthop != NULL) {
341 if (secret != NULL) {
342 extract_token(secret, linebuf, 1, '|', 256);
349 return(retval); /* yup, it's a direct neighbor */
353 * If we get to this point we have to see if we know the next hop
355 if (the_netmap != NULL) {
356 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
357 if (!strcasecmp(nmptr->nodename, node)) {
358 if (nexthop != NULL) {
359 strcpy(nexthop, nmptr->nexthop);
367 * If we get to this point, the supplied node name is bogus.
369 CtdlLogPrintf(CTDL_ERR, "Invalid node name <%s>\n", node);
377 void cmd_gnet(char *argbuf) {
378 char filename[PATH_MAX];
382 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
383 /* users can edit the netconfigs for their own mailbox rooms */
385 else if (CtdlAccessCheck(ac_room_aide)) return;
387 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
388 cprintf("%d Network settings for room #%ld <%s>\n",
390 CC->room.QRnumber, CC->room.QRname);
392 fp = fopen(filename, "r");
394 while (fgets(buf, sizeof buf, fp) != NULL) {
395 buf[strlen(buf)-1] = 0;
396 cprintf("%s\n", buf);
405 void cmd_snet(char *argbuf) {
406 char tempfilename[PATH_MAX];
407 char filename[PATH_MAX];
413 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
414 /* users can edit the netconfigs for their own mailbox rooms */
416 else if (CtdlAccessCheck(ac_room_aide)) return;
418 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
419 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
421 fp = fopen(tempfilename, "w");
423 cprintf("%d Cannot open %s: %s\n",
424 ERROR + INTERNAL_ERROR,
429 cprintf("%d %s\n", SEND_LISTING, tempfilename);
430 while (client_getln(buf, sizeof buf) >= 0 && strcmp(buf, "000")) {
431 fprintf(fp, "%s\n", buf);
435 /* Now copy the temp file to its permanent location.
436 * (We copy instead of link because they may be on different filesystems)
438 begin_critical_section(S_NETCONFIGS);
439 fp = fopen(tempfilename, "r");
441 newfp = fopen(filename, "w");
443 while (fgets(buf, sizeof buf, fp) != NULL) {
444 fprintf(newfp, "%s", buf);
450 end_critical_section(S_NETCONFIGS);
451 unlink(tempfilename);
456 * Deliver digest messages
458 void network_deliver_digest(SpoolControl *sc) {
461 struct CtdlMessage *msg = NULL;
464 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 siz = 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 = NewStrBufPlain(NULL, SIZ);
720 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
721 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0, 0);
723 StrBufTrim(CC->redirect_buffer);
724 fwrite(HKEY("\n"), 1, sc->digestfp);
725 fwrite(SKEY(CC->redirect_buffer), 1, sc->digestfp);
726 fwrite(HKEY("\n"), 1, sc->digestfp);
728 FreeStrBuf(&CC->redirect_buffer);
730 sc->num_msgs_spooled += 1;
736 * Process client-side list participations for this room
739 if (sc->participates != NULL) {
740 msg = CtdlFetchMessage(msgnum, 1);
743 /* Only send messages which originated on our own Citadel
744 * network, otherwise we'll end up sending the remote
745 * mailing list's messages back to it, which is rude...
747 ok_to_participate = 0;
748 if (msg->cm_fields['N'] != NULL) {
749 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
750 ok_to_participate = 1;
752 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
753 ok_to_participate = 1;
756 if (ok_to_participate) {
757 if (msg->cm_fields['F'] != NULL) {
758 free(msg->cm_fields['F']);
760 msg->cm_fields['F'] = malloc(SIZ);
761 /* Replace the Internet email address of the actual
762 * author with the email address of the room itself,
763 * so the remote listserv doesn't reject us.
764 * FIXME ... I want to be able to pick any address
766 snprintf(msg->cm_fields['F'], SIZ,
767 "room_%s@%s", CC->room.QRname,
769 for (i=0; msg->cm_fields['F'][i]; ++i) {
770 if (isspace(msg->cm_fields['F'][i])) {
771 msg->cm_fields['F'][i] = '_';
776 * Figure out how big a buffer we need to allocate
778 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
780 if (msg->cm_fields['R'] == NULL) {
781 free(msg->cm_fields['R']);
783 msg->cm_fields['R'] = strdup(nptr->name);
785 valid = validate_recipients(nptr->name, NULL, 0);
786 CtdlSubmitMsg(msg, valid, "", 0);
787 free_recipients(valid);
791 CtdlFreeMessage(msg);
796 * Process IGnet push shares
798 msg = CtdlFetchMessage(msgnum, 1);
802 /* Prepend our node name to the Path field whenever
803 * sending a message to another IGnet node
805 if (msg->cm_fields['P'] == NULL) {
806 msg->cm_fields['P'] = strdup("username");
808 newpath_len = strlen(msg->cm_fields['P']) +
809 strlen(config.c_nodename) + 2;
810 newpath = malloc(newpath_len);
811 snprintf(newpath, newpath_len, "%s!%s",
812 config.c_nodename, msg->cm_fields['P']);
813 free(msg->cm_fields['P']);
814 msg->cm_fields['P'] = newpath;
817 * Determine if this message is set to be deleted
818 * after sending out on the network
820 if (msg->cm_fields['S'] != NULL) {
821 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
822 delete_after_send = 1;
826 /* Now send it to every node */
827 if (sc->ignet_push_shares != NULL)
828 for (mptr = sc->ignet_push_shares; mptr != NULL;
833 /* Check for valid node name */
834 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
835 CtdlLogPrintf(CTDL_ERR, "Invalid node <%s>\n", mptr->remote_nodename);
839 /* Check for split horizon */
840 CtdlLogPrintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
841 bang = num_tokens(msg->cm_fields['P'], '!');
842 if (bang > 1) for (i=0; i<(bang-1); ++i) {
843 extract_token(buf, msg->cm_fields['P'], i, '!', sizeof buf);
844 CtdlLogPrintf(CTDL_DEBUG, "Compare <%s> to <%s>\n",
845 buf, mptr->remote_nodename) ;
846 if (!strcasecmp(buf, mptr->remote_nodename)) {
848 CtdlLogPrintf(CTDL_DEBUG, "Not sending to %s\n",
849 mptr->remote_nodename);
852 CtdlLogPrintf(CTDL_DEBUG, "Sending to %s\n", mptr->remote_nodename);
856 /* Send the message */
860 * Force the message to appear in the correct room
861 * on the far end by setting the C field correctly
863 if (msg->cm_fields['C'] != NULL) {
864 free(msg->cm_fields['C']);
866 if (!IsEmptyStr(mptr->remote_roomname)) {
867 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
870 msg->cm_fields['C'] = strdup(CC->room.QRname);
873 /* serialize it for transmission */
874 serialize_message(&sermsg, msg);
875 if (sermsg.len > 0) {
877 /* write it to a spool file */
878 snprintf(filename, sizeof filename,"%s/%s@%lx%x",
880 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, strof(lastsent))) {
942 sc->lastsent = extract_long(buf, 1);
944 else if (!strcasecmp(instr, strof(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, strof(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, strof(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, strof(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, strof(subpending)"|", 11)) {
981 if (time(NULL) - extract_long(buf, 4) > EXP) {
985 if (!strncasecmp(buf, strof(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']);
1550 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
1551 fp = fopen(filename, "ab");
1553 fwrite(sermsg.ser, sermsg.len, 1, fp);
1557 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1560 CtdlFreeMessage(msg);
1564 else { /* invalid destination node name */
1567 "A message you sent could not be delivered due to an invalid destination node"
1568 " name. Please check the address and try sending the message again.\n");
1577 * Check to see if we already have a copy of this message, and
1578 * abort its processing if so. (We used to post a warning to Aide>
1579 * every time this happened, but the network is now so densely
1580 * connected that it's inevitable.)
1582 if (network_usetable(msg) != 0) {
1583 CtdlFreeMessage(msg);
1587 /* Learn network topology from the path */
1588 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1589 network_learn_topology(msg->cm_fields['N'], msg->cm_fields['P']);
1592 /* Is the sending node giving us a very persuasive suggestion about
1593 * which room this message should be saved in? If so, go with that.
1595 if (msg->cm_fields['C'] != NULL) {
1596 safestrncpy(target_room, msg->cm_fields['C'], sizeof target_room);
1599 /* Otherwise, does it have a recipient? If so, validate it... */
1600 else if (msg->cm_fields['R'] != NULL) {
1601 recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
1602 if (recp != NULL) if (recp->num_error != 0) {
1604 "A message you sent could not be delivered due to an invalid address.\n"
1605 "Please check the address and try sending the message again.\n");
1607 free_recipients(recp);
1608 CtdlLogPrintf(CTDL_DEBUG, "Bouncing message due to invalid recipient address.\n");
1611 strcpy(target_room, ""); /* no target room if mail */
1614 /* Our last shot at finding a home for this message is to see if
1615 * it has the O field (Originating room) set.
1617 else if (msg->cm_fields['O'] != NULL) {
1618 safestrncpy(target_room, msg->cm_fields['O'], sizeof target_room);
1621 /* Strip out fields that are only relevant during transit */
1622 if (msg->cm_fields['D'] != NULL) {
1623 free(msg->cm_fields['D']);
1624 msg->cm_fields['D'] = NULL;
1626 if (msg->cm_fields['C'] != NULL) {
1627 free(msg->cm_fields['C']);
1628 msg->cm_fields['C'] = NULL;
1631 /* save the message into a room */
1632 if (PerformNetprocHooks(msg, target_room) == 0) {
1633 msg->cm_flags = CM_SKIP_HOOKS;
1634 CtdlSubmitMsg(msg, recp, target_room, 0);
1636 CtdlFreeMessage(msg);
1637 free_recipients(recp);
1642 * Process a single message from a single file from the inbound queue
1644 void network_process_message(FILE *fp, long msgstart, long msgend) {
1649 hold_pos = ftell(fp);
1650 size = msgend - msgstart + 1;
1651 buffer = malloc(size);
1652 if (buffer != NULL) {
1653 fseek(fp, msgstart, SEEK_SET);
1654 if (fread(buffer, size, 1, fp) > 0) {
1655 network_process_buffer(buffer, size);
1660 fseek(fp, hold_pos, SEEK_SET);
1665 * Process a single file from the inbound queue
1667 void network_process_file(char *filename) {
1669 long msgstart = (-1L);
1670 long msgend = (-1L);
1675 fp = fopen(filename, "rb");
1677 CtdlLogPrintf(CTDL_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
1681 fseek(fp, 0L, SEEK_END);
1682 CtdlLogPrintf(CTDL_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
1685 /* Look for messages in the data stream and break them out */
1686 while (ch = getc(fp), ch >= 0) {
1689 if (msgstart >= 0L) {
1690 msgend = msgcur - 1;
1691 network_process_message(fp, msgstart, msgend);
1699 msgend = msgcur - 1;
1700 if (msgstart >= 0L) {
1701 network_process_message(fp, msgstart, msgend);
1710 * Process anything in the inbound queue
1712 void network_do_spoolin(void) {
1715 struct stat statbuf;
1716 char filename[PATH_MAX];
1717 static time_t last_spoolin_mtime = 0L;
1720 * Check the spoolin directory's modification time. If it hasn't
1721 * been touched, we don't need to scan it.
1723 if (stat(ctdl_netin_dir, &statbuf)) return;
1724 if (statbuf.st_mtime == last_spoolin_mtime) {
1725 CtdlLogPrintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1728 last_spoolin_mtime = statbuf.st_mtime;
1729 CtdlLogPrintf(CTDL_DEBUG, "network: processing inbound queue\n");
1732 * Ok, there's something interesting in there, so scan it.
1734 dp = opendir(ctdl_netin_dir);
1735 if (dp == NULL) return;
1737 while (d = readdir(dp), d != NULL) {
1738 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1745 network_process_file(filename);
1753 * Step 1: consolidate files in the outbound queue into one file per neighbor node
1754 * Step 2: delete any files in the outbound queue that were for neighbors who no longer exist.
1756 void network_consolidate_spoolout(void) {
1759 char filename[PATH_MAX];
1765 /* Step 1: consolidate files in the outbound queue into one file per neighbor node */
1766 dp = opendir(ctdl_netout_dir);
1767 if (dp == NULL) return;
1768 while (d = readdir(dp), d != NULL) {
1770 (strcmp(d->d_name, "."))
1771 && (strcmp(d->d_name, ".."))
1772 && (strchr(d->d_name, '@') != NULL)
1774 safestrncpy(nexthop, d->d_name, sizeof nexthop);
1775 ptr = strchr(nexthop, '@');
1785 CtdlLogPrintf(CTDL_DEBUG, "Consolidate %s to %s\n", filename, nexthop);
1786 if (network_talking_to(nexthop, NTT_CHECK)) {
1787 CtdlLogPrintf(CTDL_DEBUG,
1788 "Currently online with %s - skipping for now\n",
1793 network_talking_to(nexthop, NTT_ADD);
1794 snprintf(cmd, sizeof cmd, "/bin/cat %s >>%s/%s && /bin/rm -f %s",
1796 ctdl_netout_dir, nexthop,
1800 network_talking_to(nexthop, NTT_REMOVE);
1806 /* Step 2: delete any files in the outbound queue that were for neighbors who no longer exist */
1808 dp = opendir(ctdl_netout_dir);
1809 if (dp == NULL) return;
1811 while (d = readdir(dp), d != NULL) {
1812 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1814 ptr = strchr(d->d_name, '@');
1824 strcpy(nexthop, "");
1825 i = is_valid_node(nexthop, NULL, d->d_name);
1827 if ( (i != 0) || !IsEmptyStr(nexthop) ) {
1838 * receive network spool from the remote system
1840 void receive_spool(int *sock, char *remote_nodename) {
1841 long download_len = 0L;
1842 long bytes_received = 0L;
1844 static char pbuf[IGNET_PACKET_SIZE];
1845 char tempfilename[PATH_MAX];
1846 char permfilename[PATH_MAX];
1850 snprintf(tempfilename,
1851 sizeof tempfilename,
1859 snprintf(permfilename,
1860 sizeof permfilename,
1868 if (sock_puts(sock, "NDOP") < 0) return;
1869 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1870 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1871 if (buf[0] != '2') {
1874 download_len = extract_long(&buf[4], 0);
1876 bytes_received = 0L;
1877 fp = fopen(tempfilename, "w");
1879 CtdlLogPrintf(CTDL_CRIT, "cannot open download file locally: %s\n",
1884 while (bytes_received < download_len) {
1886 * If shutting down we can exit here and unlink the temp file.
1887 * this shouldn't loose us any messages.
1889 if (CtdlThreadCheckStop())
1892 unlink(tempfilename);
1895 snprintf(buf, sizeof buf, "READ %ld|%ld",
1897 ((download_len - bytes_received > IGNET_PACKET_SIZE)
1898 ? IGNET_PACKET_SIZE : (download_len - bytes_received)));
1899 if (sock_puts(sock, buf) < 0) {
1901 unlink(tempfilename);
1904 if (sock_getln(sock, buf, sizeof buf) < 0) {
1906 unlink(tempfilename);
1909 if (buf[0] == '6') {
1910 plen = extract_long(&buf[4], 0);
1911 if (sock_read(sock, pbuf, plen, 1) < 0) {
1913 unlink(tempfilename);
1916 fwrite((char *) pbuf, plen, 1, fp);
1917 bytes_received = bytes_received + plen;
1923 /* Last chance for shutdown exit */
1924 if (CtdlThreadCheckStop())
1926 unlink(tempfilename);
1930 if (sock_puts(sock, "CLOS") < 0) {
1931 unlink(tempfilename);
1936 * From here on we must complete or messages will get lost
1938 if (sock_getln(sock, buf, sizeof buf) < 0) {
1939 unlink(tempfilename);
1942 if (download_len > 0) {
1943 CtdlLogPrintf(CTDL_NOTICE, "Received %ld octets from <%s>\n", download_len, remote_nodename);
1945 CtdlLogPrintf(CTDL_DEBUG, "%s\n", buf);
1947 /* Now move the temp file to its permanent location.
1949 if (link(tempfilename, permfilename) != 0) {
1950 CtdlLogPrintf(CTDL_ALERT, "Could not link %s to %s: %s\n",
1951 tempfilename, permfilename, strerror(errno)
1954 unlink(tempfilename);
1960 * transmit network spool to the remote system
1962 void transmit_spool(int *sock, char *remote_nodename)
1967 long bytes_to_write, thisblock, bytes_written;
1971 if (sock_puts(sock, "NUOP") < 0) return;
1972 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1973 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1974 if (buf[0] != '2') {
1978 snprintf(sfname, sizeof sfname,
1983 fd = open(sfname, O_RDONLY);
1985 if (errno != ENOENT) {
1986 CtdlLogPrintf(CTDL_CRIT, "cannot open %s: %s\n", sfname, strerror(errno));
1991 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
1992 bytes_to_write = plen;
1993 while (bytes_to_write > 0L) {
1994 /* Exit if shutting down */
1995 if (CtdlThreadCheckStop())
2001 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
2002 if (sock_puts(sock, buf) < 0) {
2006 if (sock_getln(sock, buf, sizeof buf) < 0) {
2010 thisblock = atol(&buf[4]);
2011 if (buf[0] == '7') {
2012 if (sock_write(sock, pbuf, (int) thisblock) < 0) {
2016 bytes_to_write -= thisblock;
2017 bytes_written += thisblock;
2027 /* Last chance for shutdown exit */
2028 if(CtdlThreadCheckStop())
2031 if (sock_puts(sock, "UCLS 1") < 0) return;
2034 * From here on we must complete or messages will get lost
2036 if (sock_getln(sock, buf, sizeof buf) < 0) return;
2037 CtdlLogPrintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n", bytes_written, remote_nodename);
2038 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2039 if (buf[0] == '2') {
2040 CtdlLogPrintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
2048 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
2050 void network_poll_node(char *node, char *secret, char *host, char *port) {
2054 char connected_to[SIZ];
2057 if (network_talking_to(node, NTT_CHECK)) return;
2058 network_talking_to(node, NTT_ADD);
2059 CtdlLogPrintf(CTDL_DEBUG, "network: polling <%s>\n", node);
2060 CtdlLogPrintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
2062 sock = sock_connect(host, port, "tcp");
2064 CtdlLogPrintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
2065 network_talking_to(node, NTT_REMOVE);
2069 CtdlLogPrintf(CTDL_DEBUG, "Connected!\n");
2070 CCC->sReadBuf = NewStrBuf();
2071 CCC->sMigrateBuf = NewStrBuf();
2074 /* Read the server greeting */
2075 if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
2076 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2078 /* Check that the remote is who we think it is and warn the Aide if not */
2079 extract_token (connected_to, buf, 1, ' ', sizeof connected_to);
2080 if (strcmp(connected_to, node))
2082 snprintf(err_buf, sizeof(err_buf),
2083 "Connected to node \"%s\" but I was expecting to connect to node \"%s\".",
2086 CtdlLogPrintf(CTDL_ERR, "%s\n", err_buf);
2087 CtdlAideMessage(err_buf, "Network error");
2090 /* We're talking to the correct node. Now identify ourselves. */
2091 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
2092 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2093 if (sock_puts(&sock, buf) <0) goto bail;
2094 if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
2095 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2096 if (buf[0] != '2') {
2100 /* At this point we are authenticated. */
2101 if (!CtdlThreadCheckStop())
2102 receive_spool(&sock, node);
2103 if (!CtdlThreadCheckStop())
2104 transmit_spool(&sock, node);
2107 sock_puts(&sock, "QUIT");
2109 FreeStrBuf(&CCC->sReadBuf);
2110 FreeStrBuf(&CCC->sMigrateBuf);
2113 network_talking_to(node, NTT_REMOVE);
2119 * Poll other Citadel nodes and transfer inbound/outbound network data.
2120 * Set "full" to nonzero to force a poll of every node, or to zero to poll
2121 * only nodes to which we have data to send.
2123 void network_poll_other_citadel_nodes(int full_poll) {
2131 char spoolfile[256];
2133 if (working_ignetcfg == NULL) {
2134 CtdlLogPrintf(CTDL_DEBUG, "network: no neighbor nodes are configured - not polling.\n");
2138 /* Use the string tokenizer to grab one line at a time */
2139 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
2140 if(CtdlThreadCheckStop())
2142 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
2143 extract_token(node, linebuf, 0, '|', sizeof node);
2144 extract_token(secret, linebuf, 1, '|', sizeof secret);
2145 extract_token(host, linebuf, 2, '|', sizeof host);
2146 extract_token(port, linebuf, 3, '|', sizeof port);
2147 if ( !IsEmptyStr(node) && !IsEmptyStr(secret)
2148 && !IsEmptyStr(host) && !IsEmptyStr(port)) {
2157 if (access(spoolfile, R_OK) == 0) {
2162 network_poll_node(node, secret, host, port);
2173 * It's ok if these directories already exist. Just fail silently.
2175 void create_spool_dirs(void) {
2176 if ((mkdir(ctdl_spool_dir, 0700) != 0) && (errno != EEXIST))
2177 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_spool_dir, strerror(errno));
2178 if (chown(ctdl_spool_dir, CTDLUID, (-1)) != 0)
2179 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_spool_dir, strerror(errno));
2180 if ((mkdir(ctdl_netin_dir, 0700) != 0) && (errno != EEXIST))
2181 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_netin_dir, strerror(errno));
2182 if (chown(ctdl_netin_dir, CTDLUID, (-1)) != 0)
2183 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netin_dir, strerror(errno));
2184 if ((mkdir(ctdl_nettmp_dir, 0700) != 0) && (errno != EEXIST))
2185 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_nettmp_dir, strerror(errno));
2186 if (chown(ctdl_nettmp_dir, CTDLUID, (-1)) != 0)
2187 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_nettmp_dir, strerror(errno));
2188 if ((mkdir(ctdl_netout_dir, 0700) != 0) && (errno != EEXIST))
2189 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_netout_dir, strerror(errno));
2190 if (chown(ctdl_netout_dir, CTDLUID, (-1)) != 0)
2191 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netout_dir, strerror(errno));
2199 * network_do_queue()
2201 * Run through the rooms doing various types of network stuff.
2203 void *network_do_queue(void *args) {
2204 static time_t last_run = 0L;
2205 struct RoomProcList *ptr;
2206 int full_processing = 1;
2207 struct CitContext networkerCC;
2209 /* Give the networker its own private CitContext */
2210 CtdlFillSystemContext(&networkerCC, "network");
2211 citthread_setspecific(MyConKey, (void *)&networkerCC );
2214 * Run the full set of processing tasks no more frequently
2215 * than once every n seconds
2217 if ( (time(NULL) - last_run) < config.c_net_freq ) {
2218 full_processing = 0;
2219 CtdlLogPrintf(CTDL_DEBUG, "Network full processing in %ld seconds.\n",
2220 config.c_net_freq - (time(NULL)- last_run)
2225 * This is a simple concurrency check to make sure only one queue run
2226 * is done at a time. We could do this with a mutex, but since we
2227 * don't really require extremely fine granularity here, we'll do it
2228 * with a static variable instead.
2235 /* Load the IGnet Configuration into memory */
2236 load_working_ignetcfg();
2239 * Poll other Citadel nodes. Maybe. If "full_processing" is set
2240 * then we poll everyone. Otherwise we only poll nodes we have stuff
2243 network_poll_other_citadel_nodes(full_processing);
2246 * Load the network map and filter list into memory.
2249 filterlist = load_filter_list();
2252 * Go ahead and run the queue
2254 if (full_processing && !CtdlThreadCheckStop()) {
2255 CtdlLogPrintf(CTDL_DEBUG, "network: loading outbound queue\n");
2256 CtdlForEachRoom(network_queue_room, NULL);
2259 if (rplist != NULL) {
2260 CtdlLogPrintf(CTDL_DEBUG, "network: running outbound queue\n");
2261 while (rplist != NULL && !CtdlThreadCheckStop()) {
2262 char spoolroomname[ROOMNAMELEN];
2263 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
2264 begin_critical_section(S_RPLIST);
2266 /* pop this record off the list */
2268 rplist = rplist->next;
2271 /* invalidate any duplicate entries to prevent double processing */
2272 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
2273 if (!strcasecmp(ptr->name, spoolroomname)) {
2278 end_critical_section(S_RPLIST);
2279 if (spoolroomname[0] != 0) {
2280 network_spoolout_room(spoolroomname);
2285 /* If there is anything in the inbound queue, process it */
2286 if (!CtdlThreadCheckStop()) {
2287 network_do_spoolin();
2290 /* Save the network map back to disk */
2291 write_network_map();
2293 /* Free the filter list in memory */
2294 free_filter_list(filterlist);
2297 network_consolidate_spoolout();
2299 CtdlLogPrintf(CTDL_DEBUG, "network: queue run completed\n");
2301 if (full_processing) {
2302 last_run = time(NULL);
2307 /* Reschedule this task to happen again periodically, unless the thread system indicates
2308 * that the server is shutting down.
2310 if (!CtdlThreadCheckStop()) {
2311 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK,
2312 network_do_queue, NULL, time(NULL) + 60
2316 CtdlLogPrintf(CTDL_DEBUG, "network: Task STOPPED.\n");
2323 * cmd_netp() - authenticate to the server as another Citadel node polling
2324 * for network traffic
2326 void cmd_netp(char *cmdbuf)
2337 extract_token(node, cmdbuf, 0, '|', sizeof node);
2338 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2340 /* load the IGnet Configuration to check node validity */
2341 load_working_ignetcfg();
2342 v = is_valid_node(nexthop, secret, node);
2345 snprintf(err_buf, sizeof err_buf,
2346 "An unknown Citadel server called \"%s\" attempted to connect from %s [%s].\n",
2347 node, CC->cs_host, CC->cs_addr
2349 CtdlLogPrintf(CTDL_WARNING, err_buf);
2350 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2351 CtdlAideMessage(err_buf, "IGNet Networking.");
2355 if (strcasecmp(pass, secret)) {
2356 snprintf(err_buf, sizeof err_buf,
2357 "A Citadel server at %s [%s] failed to authenticate as network node \"%s\".\n",
2358 CC->cs_host, CC->cs_addr, node
2360 CtdlLogPrintf(CTDL_WARNING, err_buf);
2361 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2362 CtdlAideMessage(err_buf, "IGNet Networking.");
2366 if (network_talking_to(node, NTT_CHECK)) {
2367 CtdlLogPrintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2368 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2372 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2373 network_talking_to(node, NTT_ADD);
2374 CtdlLogPrintf(CTDL_NOTICE, "Network node <%s> logged in from %s [%s]\n",
2375 CC->net_node, CC->cs_host, CC->cs_addr
2377 cprintf("%d authenticated as network node '%s'\n", CIT_OK, CC->net_node);
2381 int network_room_handler (struct ctdlroom *room)
2383 network_queue_room(room, NULL);
2389 * Module entry point
2391 CTDL_MODULE_INIT(network)
2395 create_spool_dirs();
2396 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2397 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2398 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2399 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2400 CtdlRegisterRoomHook(network_room_handler);
2401 CtdlRegisterCleanupHook(destroy_network_queue_room);
2404 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK, network_do_queue, NULL, 0);
2405 /* return our Subversion id for the Log */