- /*
- * Process digest recipients
- */
- if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
- msg = CtdlFetchMessage(msgnum, 1);
- if (msg != NULL) {
- fprintf(sc->digestfp, " -----------------------------------"
- "------------------------------------"
- "-------\n");
- fprintf(sc->digestfp, "From: ");
- if (msg->cm_fields['A'] != NULL) {
- fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
- }
- if (msg->cm_fields['F'] != NULL) {
- fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
- }
- else if (msg->cm_fields['N'] != NULL) {
- fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
- }
- fprintf(sc->digestfp, "\n");
- if (msg->cm_fields['U'] != NULL) {
- fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
- }
-
- CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
-
- safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
- CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0, 0);
-
- StrBufTrim(CC->redirect_buffer);
- fwrite(HKEY("\n"), 1, sc->digestfp);
- fwrite(SKEY(CC->redirect_buffer), 1, sc->digestfp);
- fwrite(HKEY("\n"), 1, sc->digestfp);
-
- FreeStrBuf(&CC->redirect_buffer);
-
- sc->num_msgs_spooled += 1;
- free(msg);
- }
- }
-
- /*
- * Process client-side list participations for this room
- */
- instr_len = SIZ;
- if (sc->participates != NULL) {
- msg = CtdlFetchMessage(msgnum, 1);
- if (msg != NULL) {
-
- /* Only send messages which originated on our own Citadel
- * network, otherwise we'll end up sending the remote
- * mailing list's messages back to it, which is rude...
- */
- ok_to_participate = 0;
- if (msg->cm_fields['N'] != NULL) {
- if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
- ok_to_participate = 1;
- }
- if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
- ok_to_participate = 1;
- }
- }
- if (ok_to_participate) {
- if (msg->cm_fields['F'] != NULL) {
- free(msg->cm_fields['F']);
- }
- msg->cm_fields['F'] = malloc(SIZ);
- /* Replace the Internet email address of the actual
- * author with the email address of the room itself,
- * so the remote listserv doesn't reject us.
- * FIXME ... I want to be able to pick any address
- */
- snprintf(msg->cm_fields['F'], SIZ,
- "room_%s@%s", CC->room.QRname,
- config.c_fqdn);
- for (i=0; msg->cm_fields['F'][i]; ++i) {
- if (isspace(msg->cm_fields['F'][i])) {
- msg->cm_fields['F'][i] = '_';
- }
- }
-
- /*
- * Figure out how big a buffer we need to allocate
- */
- for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
-
- if (msg->cm_fields['R'] == NULL) {
- free(msg->cm_fields['R']);
- }
- msg->cm_fields['R'] = strdup(nptr->name);
-
- valid = validate_recipients(nptr->name, NULL, 0);
- CtdlSubmitMsg(msg, valid, "", 0);
- free_recipients(valid);
- }
-
- }
- CtdlFreeMessage(msg);
- }
- }
-
- /*
- * Process IGnet push shares
- */
- msg = CtdlFetchMessage(msgnum, 1);
- if (msg != NULL) {
- size_t newpath_len;
-
- /* Prepend our node name to the Path field whenever
- * sending a message to another IGnet node
- */
- if (msg->cm_fields['P'] == NULL) {
- msg->cm_fields['P'] = strdup("username");
- }
- newpath_len = strlen(msg->cm_fields['P']) +
- strlen(config.c_nodename) + 2;
- newpath = malloc(newpath_len);
- snprintf(newpath, newpath_len, "%s!%s",
- config.c_nodename, msg->cm_fields['P']);
- free(msg->cm_fields['P']);
- msg->cm_fields['P'] = newpath;
-
- /*
- * Determine if this message is set to be deleted
- * after sending out on the network
- */
- if (msg->cm_fields['S'] != NULL) {
- if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
- delete_after_send = 1;
- }
- }
-
- /* Now send it to every node */
- if (sc->ignet_push_shares != NULL)
- for (mptr = sc->ignet_push_shares; mptr != NULL;
- mptr = mptr->next) {
-
- send = 1;
-
- /* Check for valid node name */
- if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
- CtdlLogPrintf(CTDL_ERR, "Invalid node <%s>\n", mptr->remote_nodename);
- send = 0;
- }
-
- /* Check for split horizon */
- CtdlLogPrintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
- bang = num_tokens(msg->cm_fields['P'], '!');
- if (bang > 1) for (i=0; i<(bang-1); ++i) {
- extract_token(buf, msg->cm_fields['P'], i, '!', sizeof buf);
- CtdlLogPrintf(CTDL_DEBUG, "Compare <%s> to <%s>\n",
- buf, mptr->remote_nodename) ;
- if (!strcasecmp(buf, mptr->remote_nodename)) {
- send = 0;
- CtdlLogPrintf(CTDL_DEBUG, "Not sending to %s\n",
- mptr->remote_nodename);
- }
- else {
- CtdlLogPrintf(CTDL_DEBUG, "Sending to %s\n", mptr->remote_nodename);
- }
- }
-
- /* Send the message */
- if (send == 1) {
-
- /*
- * Force the message to appear in the correct room
- * on the far end by setting the C field correctly
- */
- if (msg->cm_fields['C'] != NULL) {
- free(msg->cm_fields['C']);
- }
- if (!IsEmptyStr(mptr->remote_roomname)) {
- msg->cm_fields['C'] = strdup(mptr->remote_roomname);
- }
- else {
- msg->cm_fields['C'] = strdup(CC->room.QRname);
- }
-
- /* serialize it for transmission */
- serialize_message(&sermsg, msg);
- if (sermsg.len > 0) {
-
- /* write it to a spool file */
- snprintf(filename, sizeof filename,"%s/%s@%lx%x",
- ctdl_netout_dir,
- mptr->remote_nodename,
- time(NULL),
- rand()
- );
- CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
- fp = fopen(filename, "ab");
- if (fp != NULL) {
- fwrite(sermsg.ser,
- sermsg.len, 1, fp);
- fclose(fp);
- }
- else {
- CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
- }
-
- /* free the serialized version */
- free(sermsg.ser);
- }
-
- }
- }
- CtdlFreeMessage(msg);
- }
-
- /* update lastsent */
- sc->lastsent = msgnum;
-
- /* Delete this message if delete-after-send is set */
- if (delete_after_send) {
- CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
- }
-
-}
-
-
-int read_spoolcontrol_file(SpoolControl **scc, char *filename)
-{
- FILE *fp;
- char instr[SIZ];
- char buf[SIZ];
- char nodename[256];
- char roomname[ROOMNAMELEN];
- size_t miscsize = 0;
- size_t linesize = 0;
- int skipthisline = 0;
- namelist *nptr = NULL;
- maplist *mptr = NULL;
- SpoolControl *sc;
-
- fp = fopen(filename, "r");
- if (fp == NULL) {
- return 0;
- }
- sc = malloc(sizeof(SpoolControl));
- memset(sc, 0, sizeof(SpoolControl));
- *scc = sc;
-
- while (fgets(buf, sizeof buf, fp) != NULL) {
- buf[strlen(buf)-1] = 0;
-
- extract_token(instr, buf, 0, '|', sizeof instr);
- if (!strcasecmp(instr, strof(lastsent))) {
- sc->lastsent = extract_long(buf, 1);
- }
- else if (!strcasecmp(instr, strof(listrecp))) {
- nptr = (namelist *)
- malloc(sizeof(namelist));
- nptr->next = sc->listrecps;
- extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
- sc->listrecps = nptr;
- }
- else if (!strcasecmp(instr, strof(participate))) {
- nptr = (namelist *)
- malloc(sizeof(namelist));
- nptr->next = sc->participates;
- extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
- sc->participates = nptr;
- }
- else if (!strcasecmp(instr, strof(digestrecp))) {
- nptr = (namelist *)
- malloc(sizeof(namelist));
- nptr->next = sc->digestrecps;
- extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
- sc->digestrecps = nptr;
- }
- else if (!strcasecmp(instr, strof(ignet_push_share))) {
- extract_token(nodename, buf, 1, '|', sizeof nodename);
- extract_token(roomname, buf, 2, '|', sizeof roomname);
- mptr = (maplist *) malloc(sizeof(maplist));
- mptr->next = sc->ignet_push_shares;
- strcpy(mptr->remote_nodename, nodename);
- strcpy(mptr->remote_roomname, roomname);
- sc->ignet_push_shares = mptr;
- }
- else {
- /* Preserve 'other' lines ... *unless* they happen to
- * be subscribe/unsubscribe pendings with expired
- * timestamps.
- */
- skipthisline = 0;
- if (!strncasecmp(buf, strof(subpending)"|", 11)) {
- if (time(NULL) - extract_long(buf, 4) > EXP) {
- skipthisline = 1;
- }
- }
- if (!strncasecmp(buf, strof(unsubpending)"|", 13)) {
- if (time(NULL) - extract_long(buf, 3) > EXP) {
- skipthisline = 1;
- }
- }
-
- if (skipthisline == 0) {
- linesize = strlen(buf);
- sc->misc = realloc(sc->misc,
- (miscsize + linesize + 2) );
- sprintf(&sc->misc[miscsize], "%s\n", buf);
- miscsize = miscsize + linesize + 1;
- }
- }
-
-
- }
- fclose(fp);
- return 1;
-}
-
-void free_spoolcontrol_struct(SpoolControl **scc)
-{
- SpoolControl *sc;
- namelist *nptr = NULL;
- maplist *mptr = NULL;
-
- sc = *scc;
- while (sc->listrecps != NULL) {
- nptr = sc->listrecps->next;
- free(sc->listrecps);
- sc->listrecps = nptr;
- }
- /* Do the same for digestrecps */
- while (sc->digestrecps != NULL) {
- nptr = sc->digestrecps->next;
- free(sc->digestrecps);
- sc->digestrecps = nptr;
- }
- /* Do the same for participates */
- while (sc->participates != NULL) {
- nptr = sc->participates->next;
- free(sc->participates);
- sc->participates = nptr;
- }
- while (sc->ignet_push_shares != NULL) {
- mptr = sc->ignet_push_shares->next;
- free(sc->ignet_push_shares);
- sc->ignet_push_shares = mptr;
- }
- free(sc->misc);
- free(sc);
- *scc=NULL;
-}
-
-int writenfree_spoolcontrol_file(SpoolControl **scc, char *filename)
-{
- char tempfilename[PATH_MAX];
- int TmpFD;
- SpoolControl *sc;
- namelist *nptr = NULL;
- maplist *mptr = NULL;
- long len;
- time_t unixtime;
- struct timeval tv;
- long reltid; /* if we don't have SYS_gettid, use "random" value */
- StrBuf *Cfg;
- int rc;
-
- len = strlen(filename);
- memcpy(tempfilename, filename, len + 1);
-
-
-#if defined(HAVE_SYSCALL_H) && defined (SYS_gettid)
- reltid = syscall(SYS_gettid);
-#endif
- gettimeofday(&tv, NULL);
- /* Promote to time_t; types differ on some OSes (like darwin) */
- unixtime = tv.tv_sec;
-
- sprintf(tempfilename + len, ".%ld-%ld", reltid, unixtime);
- sc = *scc;
- errno = 0;
- TmpFD = open(tempfilename, O_CREAT|O_EXCL|O_RDWR, S_IRUSR|S_IWUSR);
- Cfg = NewStrBuf();
- if ((TmpFD < 0) || (errno != 0)) {
- CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
- filename, strerror(errno));
- free_spoolcontrol_struct(scc);
- unlink(tempfilename);
- }
- else {
- fchown(TmpFD, config.c_ctdluid, 0);
- StrBufAppendPrintf(Cfg, "lastsent|%ld\n", sc->lastsent);
-
- /* Write out the listrecps while freeing from memory at the
- * same time. Am I clever or what? :)
- */
- while (sc->listrecps != NULL) {
- StrBufAppendPrintf(Cfg, "listrecp|%s\n", sc->listrecps->name);
- nptr = sc->listrecps->next;
- free(sc->listrecps);
- sc->listrecps = nptr;
- }
- /* Do the same for digestrecps */
- while (sc->digestrecps != NULL) {
- StrBufAppendPrintf(Cfg, "digestrecp|%s\n", sc->digestrecps->name);
- nptr = sc->digestrecps->next;
- free(sc->digestrecps);
- sc->digestrecps = nptr;
- }
- /* Do the same for participates */
- while (sc->participates != NULL) {
- StrBufAppendPrintf(Cfg, "participate|%s\n", sc->participates->name);
- nptr = sc->participates->next;
- free(sc->participates);
- sc->participates = nptr;
- }
- while (sc->ignet_push_shares != NULL) {
- StrBufAppendPrintf(Cfg, "ignet_push_share|%s", sc->ignet_push_shares->remote_nodename);
- if (!IsEmptyStr(sc->ignet_push_shares->remote_roomname)) {
- StrBufAppendPrintf(Cfg, "|%s", sc->ignet_push_shares->remote_roomname);
- }
- StrBufAppendPrintf(Cfg, "\n");
- mptr = sc->ignet_push_shares->next;
- free(sc->ignet_push_shares);
- sc->ignet_push_shares = mptr;
- }
- if (sc->misc != NULL) {
- StrBufAppendBufPlain(Cfg, sc->misc, -1, 0);
- }
- free(sc->misc);
-
- rc = write(TmpFD, ChrPtr(Cfg), StrLength(Cfg));
- if ((rc >=0 ) && (rc == StrLength(Cfg)))
- {
- close(TmpFD);
- rename(tempfilename, filename);
- }
- else {
- CtdlLogPrintf(CTDL_EMERG,
- "unable to write %s; [%s]; not enough space on the disk?\n",
- tempfilename,
- strerror(errno));
- close(TmpFD);
- unlink(tempfilename);
- }
- FreeStrBuf(&Cfg);
- free(sc);
- *scc=NULL;
- }
- return 1;
-}
-int is_recipient(SpoolControl *sc, const char *Name)
-{
- namelist *nptr;
- size_t len;
-
- len = strlen(Name);
- nptr = sc->listrecps;
- while (nptr != NULL) {
- if (strncmp(Name, nptr->name, len)==0)
- return 1;
- nptr = nptr->next;
- }
- /* Do the same for digestrecps */
- nptr = sc->digestrecps;
- while (nptr != NULL) {
- if (strncmp(Name, nptr->name, len)==0)
- return 1;
- nptr = nptr->next;
- }
- /* Do the same for participates */
- nptr = sc->participates;
- while (nptr != NULL) {
- if (strncmp(Name, nptr->name, len)==0)
- return 1;
- nptr = nptr->next;
- }
- return 0;
-}
-
-
-/*
- * Batch up and send all outbound traffic from the current room
- */
-void network_spoolout_room(char *room_to_spool) {
- char buf[SIZ];
- char filename[PATH_MAX];
- SpoolControl *sc;
- int i;
-
- /*
- * If the room doesn't exist, don't try to perform its networking tasks.
- * Normally this should never happen, but once in a while maybe a room gets
- * queued for networking and then deleted before it can happen.
- */
- if (CtdlGetRoom(&CC->room, room_to_spool) != 0) {
- CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
- return;
- }
-
- assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
- begin_critical_section(S_NETCONFIGS);
-
- /* Only do net processing for rooms that have netconfigs */
- if (!read_spoolcontrol_file(&sc, filename))
- {
- end_critical_section(S_NETCONFIGS);
- return;
- }
- CtdlLogPrintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
-
- /* If there are digest recipients, we have to build a digest */
- if (sc->digestrecps != NULL) {
- sc->digestfp = tmpfile();
- fprintf(sc->digestfp, "Content-type: text/plain\n\n");
- }
-
- /* Do something useful */
- CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
- network_spool_msg, sc);
-
- /* If we wrote a digest, deliver it and then close it */
- snprintf(buf, sizeof buf, "room_%s@%s",
- CC->room.QRname, config.c_fqdn);
- for (i=0; buf[i]; ++i) {
- buf[i] = tolower(buf[i]);
- if (isspace(buf[i])) buf[i] = '_';
- }
- if (sc->digestfp != NULL) {
- fprintf(sc->digestfp, " -----------------------------------"
- "------------------------------------"
- "-------\n"
- "You are subscribed to the '%s' "
- "list.\n"
- "To post to the list: %s\n",
- CC->room.QRname, buf
- );
- network_deliver_digest(sc); /* deliver and close */
- }
-
- /* Now rewrite the config file */
- writenfree_spoolcontrol_file(&sc, filename);
- end_critical_section(S_NETCONFIGS);
-}
-
-
-
-/*
- * Send the *entire* contents of the current room to one specific network node,
- * ignoring anything we know about which messages have already undergone
- * network processing. This can be used to bring a new node into sync.
- */
-int network_sync_to(char *target_node) {
- SpoolControl sc;
- int num_spooled = 0;
- int found_node = 0;
- char buf[256];
- char sc_type[256];
- char sc_node[256];
- char sc_room[256];
- char filename[PATH_MAX];
- FILE *fp;
-
- /* Grab the configuration line we're looking for */
- assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
- begin_critical_section(S_NETCONFIGS);
- fp = fopen(filename, "r");
- if (fp == NULL) {
- end_critical_section(S_NETCONFIGS);
- return(-1);
- }
- while (fgets(buf, sizeof buf, fp) != NULL) {
- buf[strlen(buf)-1] = 0;
- extract_token(sc_type, buf, 0, '|', sizeof sc_type);
- extract_token(sc_node, buf, 1, '|', sizeof sc_node);
- extract_token(sc_room, buf, 2, '|', sizeof sc_room);
- if ( (!strcasecmp(sc_type, "ignet_push_share"))
- && (!strcasecmp(sc_node, target_node)) ) {
- found_node = 1;
-
- /* Concise syntax because we don't need a full linked-list */
- memset(&sc, 0, sizeof(SpoolControl));
- sc.ignet_push_shares = (maplist *)
- malloc(sizeof(maplist));
- sc.ignet_push_shares->next = NULL;
- safestrncpy(sc.ignet_push_shares->remote_nodename,
- sc_node,
- sizeof sc.ignet_push_shares->remote_nodename);
- safestrncpy(sc.ignet_push_shares->remote_roomname,
- sc_room,
- sizeof sc.ignet_push_shares->remote_roomname);
- }
- }
- fclose(fp);
- end_critical_section(S_NETCONFIGS);
-
- if (!found_node) return(-1);
-
- /* Send ALL messages */
- num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
- network_spool_msg, &sc);
-
- /* Concise cleanup because we know there's only one node in the sc */
- free(sc.ignet_push_shares);
-
- CtdlLogPrintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
- num_spooled, target_node);
- return(num_spooled);
-}
-
-
-/*
- * Implements the NSYN command
- */
-void cmd_nsyn(char *argbuf) {
- int num_spooled;
- char target_node[256];
-
- if (CtdlAccessCheck(ac_aide)) return;
-
- extract_token(target_node, argbuf, 0, '|', sizeof target_node);
- num_spooled = network_sync_to(target_node);
- if (num_spooled >= 0) {
- cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
- }
- else {
- cprintf("%d No such room/node share exists.\n",
- ERROR + ROOM_NOT_FOUND);
- }
-}
-
-
-
-/*
- * Batch up and send all outbound traffic from the current room
- */
-void network_queue_room(struct ctdlroom *qrbuf, void *data) {
- struct RoomProcList *ptr;
-
- ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
- if (ptr == NULL) return;
-
- safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
- begin_critical_section(S_RPLIST);
- ptr->next = rplist;
- rplist = ptr;
- end_critical_section(S_RPLIST);
-}
-
-void destroy_network_queue_room(void)
-{
- struct RoomProcList *cur, *p;
- NetMap *nmcur, *nmp;
-
- cur = rplist;
- begin_critical_section(S_RPLIST);
- while (cur != NULL)
- {
- p = cur->next;
- free (cur);
- cur = p;
- }
- rplist = NULL;
- end_critical_section(S_RPLIST);
-
- nmcur = the_netmap;
- while (nmcur != NULL)
- {
- nmp = nmcur->next;
- free (nmcur);
- nmcur = nmp;
- }
- the_netmap = NULL;
- if (working_ignetcfg != NULL)
- free (working_ignetcfg);
- working_ignetcfg = NULL;
-}
-
-
-/*
- * Learn topology from path fields
- */
-void network_learn_topology(char *node, char *path) {
- char nexthop[256];
- NetMap *nmptr;
-
- strcpy(nexthop, "");
-
- if (num_tokens(path, '!') < 3) return;
- for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
- if (!strcasecmp(nmptr->nodename, node)) {
- extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
- nmptr->lastcontact = time(NULL);
- ++netmap_changed;
- return;
- }
- }
-
- /* If we got here then it's not in the map, so add it. */
- nmptr = (NetMap *) malloc(sizeof (NetMap));
- strcpy(nmptr->nodename, node);
- nmptr->lastcontact = time(NULL);
- extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
- nmptr->next = the_netmap;
- the_netmap = nmptr;
- ++netmap_changed;
-}
-
-
-
-
-/*
- * Bounce a message back to the sender
- */
-void network_bounce(struct CtdlMessage *msg, char *reason) {
- char *oldpath = NULL;
- char buf[SIZ];
- char bouncesource[SIZ];
- char recipient[SIZ];
- struct recptypes *valid = NULL;
- char force_room[ROOMNAMELEN];
- static int serialnum = 0;
- size_t size;
-
- CtdlLogPrintf(CTDL_DEBUG, "entering network_bounce()\n");
-
- if (msg == NULL) return;
-
- snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
-
- /*
- * Give it a fresh message ID
- */
- if (msg->cm_fields['I'] != NULL) {
- free(msg->cm_fields['I']);
- }
- snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
- (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
- msg->cm_fields['I'] = strdup(buf);
-
- /*
- * FIXME ... right now we're just sending a bounce; we really want to
- * include the text of the bounced message.
- */
- if (msg->cm_fields['M'] != NULL) {
- free(msg->cm_fields['M']);
- }
- msg->cm_fields['M'] = strdup(reason);
- msg->cm_format_type = 0;
-
- /*
- * Turn the message around
- */
- if (msg->cm_fields['R'] == NULL) {
- free(msg->cm_fields['R']);
- }
-
- if (msg->cm_fields['D'] == NULL) {
- free(msg->cm_fields['D']);
- }
-
- snprintf(recipient, sizeof recipient, "%s@%s",
- msg->cm_fields['A'], msg->cm_fields['N']);
-
- if (msg->cm_fields['A'] == NULL) {
- free(msg->cm_fields['A']);
- }
-
- if (msg->cm_fields['N'] == NULL) {
- free(msg->cm_fields['N']);
- }
-
- if (msg->cm_fields['U'] == NULL) {
- free(msg->cm_fields['U']);
- }
-
- msg->cm_fields['A'] = strdup(BOUNCESOURCE);
- msg->cm_fields['N'] = strdup(config.c_nodename);
- msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
-
- /* prepend our node to the path */
- if (msg->cm_fields['P'] != NULL) {
- oldpath = msg->cm_fields['P'];
- msg->cm_fields['P'] = NULL;
- }
- else {
- oldpath = strdup("unknown_user");
- }
- size = strlen(oldpath) + SIZ;
- msg->cm_fields['P'] = malloc(size);
- snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
- free(oldpath);
-
- /* Now submit the message */
- valid = validate_recipients(recipient, NULL, 0);
- if (valid != NULL) if (valid->num_error != 0) {
- free_recipients(valid);
- valid = NULL;
- }
- if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
- strcpy(force_room, config.c_aideroom);
- }
- else {
- strcpy(force_room, "");
- }
- if ( (valid == NULL) && IsEmptyStr(force_room) ) {
- strcpy(force_room, config.c_aideroom);
- }
- CtdlSubmitMsg(msg, valid, force_room, 0);
-
- /* Clean up */
- if (valid != NULL) free_recipients(valid);
- CtdlFreeMessage(msg);
- CtdlLogPrintf(CTDL_DEBUG, "leaving network_bounce()\n");
-}
-
-
-
-
-/*
- * Process a buffer containing a single message from a single file
- * from the inbound queue
- */
-void network_process_buffer(char *buffer, long size) {
- struct CtdlMessage *msg = NULL;
- long pos;
- int field;
- struct recptypes *recp = NULL;
- char target_room[ROOMNAMELEN];
- struct ser_ret sermsg;
- char *oldpath = NULL;
- char filename[PATH_MAX];
- FILE *fp;
- char nexthop[SIZ];
- unsigned char firstbyte;
- unsigned char lastbyte;
-
- CtdlLogPrintf(CTDL_DEBUG, "network_process_buffer() processing %ld bytes\n", size);
-
- /* Validate just a little bit. First byte should be FF and * last byte should be 00. */
- firstbyte = buffer[0];
- lastbyte = buffer[size-1];
- if ( (firstbyte != 255) || (lastbyte != 0) ) {
- CtdlLogPrintf(CTDL_ERR, "Corrupt message ignored. Length=%ld, firstbyte = %d, lastbyte = %d\n",
- size, firstbyte, lastbyte);
- return;
- }
-
- /* Set default target room to trash */
- strcpy(target_room, TWITROOM);
-
- /* Load the message into memory */
- msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
- memset(msg, 0, sizeof(struct CtdlMessage));
- msg->cm_magic = CTDLMESSAGE_MAGIC;
- msg->cm_anon_type = buffer[1];
- msg->cm_format_type = buffer[2];
-
- for (pos = 3; pos < size; ++pos) {
- field = buffer[pos];
- msg->cm_fields[field] = strdup(&buffer[pos+1]);
- pos = pos + strlen(&buffer[(int)pos]);
- }
-
- /* Check for message routing */
- if (msg->cm_fields['D'] != NULL) {
- if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
-
- /* route the message */
- strcpy(nexthop, "");
- if (is_valid_node(nexthop, NULL, msg->cm_fields['D']) == 0) {
- /* prepend our node to the path */
- if (msg->cm_fields['P'] != NULL) {
- oldpath = msg->cm_fields['P'];
- msg->cm_fields['P'] = NULL;
- }
- else {
- oldpath = strdup("unknown_user");
- }
- size = strlen(oldpath) + SIZ;
- msg->cm_fields['P'] = malloc(size);
- snprintf(msg->cm_fields['P'], size, "%s!%s",
- config.c_nodename, oldpath);
- free(oldpath);
-
- /* serialize the message */
- serialize_message(&sermsg, msg);
-
- /* now send it */
- if (IsEmptyStr(nexthop)) {
- strcpy(nexthop, msg->cm_fields['D']);
- }
- snprintf(filename,
- sizeof filename,
- "%s/%s@%lx%x",
- ctdl_netout_dir,
- nexthop,
- time(NULL),
- rand()
- );
- CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
- fp = fopen(filename, "ab");
- if (fp != NULL) {
- fwrite(sermsg.ser, sermsg.len, 1, fp);
- fclose(fp);
- }
- else {
- CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
- }
- free(sermsg.ser);
- CtdlFreeMessage(msg);
- return;
- }
-
- else { /* invalid destination node name */
-
- network_bounce(msg,
-"A message you sent could not be delivered due to an invalid destination node"
-" name. Please check the address and try sending the message again.\n");
- msg = NULL;
- return;
-
- }
- }
- }
-
- /*
- * Check to see if we already have a copy of this message, and
- * abort its processing if so. (We used to post a warning to Aide>
- * every time this happened, but the network is now so densely
- * connected that it's inevitable.)
- */
- if (network_usetable(msg) != 0) {
- CtdlFreeMessage(msg);
- return;
- }
-
- /* Learn network topology from the path */
- if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
- network_learn_topology(msg->cm_fields['N'], msg->cm_fields['P']);
- }
-
- /* Is the sending node giving us a very persuasive suggestion about
- * which room this message should be saved in? If so, go with that.
- */
- if (msg->cm_fields['C'] != NULL) {
- safestrncpy(target_room, msg->cm_fields['C'], sizeof target_room);
- }
-
- /* Otherwise, does it have a recipient? If so, validate it... */
- else if (msg->cm_fields['R'] != NULL) {
- recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
- if (recp != NULL) if (recp->num_error != 0) {
- network_bounce(msg,
- "A message you sent could not be delivered due to an invalid address.\n"
- "Please check the address and try sending the message again.\n");
- msg = NULL;
- free_recipients(recp);
- CtdlLogPrintf(CTDL_DEBUG, "Bouncing message due to invalid recipient address.\n");
- return;
- }
- strcpy(target_room, ""); /* no target room if mail */
- }
-
- /* Our last shot at finding a home for this message is to see if
- * it has the O field (Originating room) set.
- */
- else if (msg->cm_fields['O'] != NULL) {
- safestrncpy(target_room, msg->cm_fields['O'], sizeof target_room);
- }
-
- /* Strip out fields that are only relevant during transit */
- if (msg->cm_fields['D'] != NULL) {
- free(msg->cm_fields['D']);
- msg->cm_fields['D'] = NULL;
- }
- if (msg->cm_fields['C'] != NULL) {
- free(msg->cm_fields['C']);
- msg->cm_fields['C'] = NULL;
- }
-
- /* save the message into a room */
- if (PerformNetprocHooks(msg, target_room) == 0) {
- msg->cm_flags = CM_SKIP_HOOKS;
- CtdlSubmitMsg(msg, recp, target_room, 0);
- }
- CtdlFreeMessage(msg);
- free_recipients(recp);
-}
-
-
-/*
- * Process a single message from a single file from the inbound queue
- */
-void network_process_message(FILE *fp, long msgstart, long msgend) {
- long hold_pos;
- long size;
- char *buffer;
-
- hold_pos = ftell(fp);
- size = msgend - msgstart + 1;
- buffer = malloc(size);
- if (buffer != NULL) {
- fseek(fp, msgstart, SEEK_SET);
- if (fread(buffer, size, 1, fp) > 0) {
- network_process_buffer(buffer, size);
- }
- free(buffer);
- }
-
- fseek(fp, hold_pos, SEEK_SET);
-}
-
-
-/*
- * Process a single file from the inbound queue
- */
-void network_process_file(char *filename) {
- FILE *fp;
- long msgstart = (-1L);
- long msgend = (-1L);
- long msgcur = 0L;
- int ch;
-
-
- fp = fopen(filename, "rb");
- if (fp == NULL) {
- CtdlLogPrintf(CTDL_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
- return;
- }
-
- fseek(fp, 0L, SEEK_END);
- CtdlLogPrintf(CTDL_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
- rewind(fp);
-
- /* Look for messages in the data stream and break them out */
- while (ch = getc(fp), ch >= 0) {
-
- if (ch == 255) {
- if (msgstart >= 0L) {
- msgend = msgcur - 1;
- network_process_message(fp, msgstart, msgend);
- }
- msgstart = msgcur;
- }
-
- ++msgcur;
- }
-
- msgend = msgcur - 1;
- if (msgstart >= 0L) {
- network_process_message(fp, msgstart, msgend);
- }
-
- fclose(fp);
- unlink(filename);
-}
-
-
-/*
- * Process anything in the inbound queue
- */
-void network_do_spoolin(void) {
- DIR *dp;
- struct dirent *d;
- struct stat statbuf;
- char filename[PATH_MAX];
- static time_t last_spoolin_mtime = 0L;
-
- /*
- * Check the spoolin directory's modification time. If it hasn't
- * been touched, we don't need to scan it.
- */
- if (stat(ctdl_netin_dir, &statbuf)) return;
- if (statbuf.st_mtime == last_spoolin_mtime) {
- CtdlLogPrintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
- return;
- }
- last_spoolin_mtime = statbuf.st_mtime;
- CtdlLogPrintf(CTDL_DEBUG, "network: processing inbound queue\n");
-
- /*
- * Ok, there's something interesting in there, so scan it.
- */
- dp = opendir(ctdl_netin_dir);
- if (dp == NULL) return;
-
- while (d = readdir(dp), d != NULL) {
- if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
- snprintf(filename,
- sizeof filename,
- "%s/%s",
- ctdl_netin_dir,
- d->d_name
- );
- network_process_file(filename);
- }
- }
-
- closedir(dp);
-}
-
-/*
- * Step 1: consolidate files in the outbound queue into one file per neighbor node
- * Step 2: delete any files in the outbound queue that were for neighbors who no longer exist.
- */
-void network_consolidate_spoolout(void) {
- DIR *dp;
- struct dirent *d;
- char filename[PATH_MAX];
- char cmd[PATH_MAX];
- char nexthop[256];
- int i;
- char *ptr;
-
- /* Step 1: consolidate files in the outbound queue into one file per neighbor node */
- dp = opendir(ctdl_netout_dir);
- if (dp == NULL) return;
- while (d = readdir(dp), d != NULL) {
- if (
- (strcmp(d->d_name, "."))
- && (strcmp(d->d_name, ".."))
- && (strchr(d->d_name, '@') != NULL)
- ) {
- safestrncpy(nexthop, d->d_name, sizeof nexthop);
- ptr = strchr(nexthop, '@');
- if (ptr) *ptr = 0;
-
- snprintf(filename,
- sizeof filename,
- "%s/%s",
- ctdl_netout_dir,
- d->d_name
- );
-
- CtdlLogPrintf(CTDL_DEBUG, "Consolidate %s to %s\n", filename, nexthop);
- if (network_talking_to(nexthop, NTT_CHECK)) {
- CtdlLogPrintf(CTDL_DEBUG,
- "Currently online with %s - skipping for now\n",
- nexthop
- );
- }
- else {
- network_talking_to(nexthop, NTT_ADD);
- snprintf(cmd, sizeof cmd, "/bin/cat %s >>%s/%s && /bin/rm -f %s",
- filename,
- ctdl_netout_dir, nexthop,
- filename
- );
- system(cmd);
- network_talking_to(nexthop, NTT_REMOVE);
- }
- }
- }
- closedir(dp);
-
- /* Step 2: delete any files in the outbound queue that were for neighbors who no longer exist */
-
- dp = opendir(ctdl_netout_dir);
- if (dp == NULL) return;
-
- while (d = readdir(dp), d != NULL) {
- if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
- continue;
- ptr = strchr(d->d_name, '@');
- if (d != NULL)
- continue;
- snprintf(filename,
- sizeof filename,
- "%s/%s",
- ctdl_netout_dir,
- d->d_name
- );
-
- strcpy(nexthop, "");
- i = is_valid_node(nexthop, NULL, d->d_name);
-
- if ( (i != 0) || !IsEmptyStr(nexthop) ) {
- unlink(filename);
- }
- }
-
-
- closedir(dp);
-}
-
-
-/*
- * receive network spool from the remote system
- */
-void receive_spool(int *sock, char *remote_nodename) {
- int download_len = 0L;
- int bytes_received = 0L;
- char buf[SIZ];
- char tempfilename[PATH_MAX];
- char permfilename[PATH_MAX];
- int plen;
- FILE *fp;
-
- snprintf(tempfilename,
- sizeof tempfilename,
- "%s/%s.%lx%x",
- ctdl_nettmp_dir,
- remote_nodename,
- time(NULL),
- rand()
- );
-
- snprintf(permfilename,
- sizeof permfilename,
- "%s/%s.%lx%x",
- ctdl_netin_dir,
- remote_nodename,
- time(NULL),
- rand()
- );
-
- if (sock_puts(sock, "NDOP") < 0) return;
- if (sock_getln(sock, buf, sizeof buf) < 0) return;
- CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
- if (buf[0] != '2') {
- return;
- }