}
-/*
- * Process a buffer containing a single message from a single file
- * from the inbound queue
- */
-void network_process_buffer(char *buffer, long size, HashList *working_ignetcfg, HashList *the_netmap, int *netmap_changed)
-{
- long len;
- StrBuf *Buf = NULL;
- struct CtdlMessage *msg = NULL;
- long pos;
- int field;
- recptypes *recp = NULL;
- char target_room[ROOMNAMELEN];
- struct ser_ret sermsg;
- char filename[PATH_MAX];
- FILE *fp;
- const StrBuf *nexthop = NULL;
- unsigned char firstbyte;
- unsigned char lastbyte;
-
- syslog(LOG_DEBUG, "netspool: network_process_buffer() processing %ld bytes", 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) ) {
- syslog(LOG_ERR, "netspool: corrupt message ignored. Length=%ld, firstbyte = %d, lastbyte = %d", 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];
- len = strlen(buffer + pos + 1);
- CM_SetField(msg, field, buffer + pos + 1, len);
- pos = pos + len + 1;
- }
-
- /* Check for message routing */
- if (!CM_IsEmpty(msg, eDestination)) {
- if (strcasecmp(msg->cm_fields[eDestination], CtdlGetConfigStr("c_nodename"))) {
-
- /* route the message */
- Buf = NewStrBufPlain(CM_KEY(msg,eDestination));
- if (CtdlIsValidNode(&nexthop,
- NULL,
- Buf,
- working_ignetcfg,
- the_netmap) == 0)
- {
- Netmap_AddMe(msg, HKEY("unknown_user"));
-
- /* serialize the message */
- CtdlSerializeMessage(&sermsg, msg);
-
- /* now send it */
- if (StrLength(nexthop) == 0) {
- nexthop = Buf;
- }
- snprintf(filename,
- sizeof filename,
- "%s/%s@%lx%x",
- ctdl_netout_dir,
- ChrPtr(nexthop),
- time(NULL),
- rand()
- );
- syslog(LOG_DEBUG, "netspool: appending to %s", filename);
- fp = fopen(filename, "ab");
- if (fp != NULL) {
- fwrite(sermsg.ser, sermsg.len, 1, fp);
- fclose(fp);
- }
- else {
- syslog(LOG_ERR, "%s: %s", filename, strerror(errno));
- }
- free(sermsg.ser);
- CM_Free(msg);
- FreeStrBuf(&Buf);
- return;
- }
-
- else { /* invalid destination node name */
- FreeStrBuf(&Buf);
-
- 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");
- 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) {
- CM_Free(msg);
- return;
- }
-
- /* Learn network topology from the path */
- if (!CM_IsEmpty(msg, eNodeName) && !CM_IsEmpty(msg, eMessagePath)) {
- NetworkLearnTopology(msg->cm_fields[eNodeName],
- msg->cm_fields[eMessagePath],
- the_netmap,
- netmap_changed);
- }
-
- /* 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 (!CM_IsEmpty(msg, eRemoteRoom)) {
- safestrncpy(target_room, msg->cm_fields[eRemoteRoom], sizeof target_room);
- }
-
- /* Otherwise, does it have a recipient? If so, validate it... */
- else if (!CM_IsEmpty(msg, eRecipient)) {
- recp = validate_recipients(msg->cm_fields[eRecipient], 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");
- free_recipients(recp);
- syslog(LOG_DEBUG, "netspool: bouncing message due to invalid recipient address.");
- 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 eOriginalRoom (O) field (Originating room) set.
- */
- else if (!CM_IsEmpty(msg, eOriginalRoom)) {
- safestrncpy(target_room, msg->cm_fields[eOriginalRoom], sizeof target_room);
- }
-
- /* Strip out fields that are only relevant during transit */
- CM_FlushField(msg, eDestination);
- CM_FlushField(msg, eRemoteRoom);
-
- /* save the message into a room */
- if (PerformNetprocHooks(msg, target_room) == 0) {
- msg->cm_flags = CM_SKIP_HOOKS;
- CtdlSubmitMsg(msg, recp, target_room, 0);
- }
- CM_Free(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,
- HashList *working_ignetcfg,
- HashList *the_netmap,
- int *netmap_changed)
-{
- 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,
- working_ignetcfg,
- the_netmap,
- netmap_changed);
- }
- free(buffer);
- }
-
- fseek(fp, hold_pos, SEEK_SET);
-}
-
-
-/*
- * Process a single file from the inbound queue
- */
-void network_process_file(char *filename,
- HashList *working_ignetcfg,
- HashList *the_netmap,
- int *netmap_changed)
-{
- FILE *fp;
- long msgstart = (-1L);
- long msgend = (-1L);
- long msgcur = 0L;
- int ch;
- int nMessages = 0;
-
- fp = fopen(filename, "rb");
- if (fp == NULL) {
- syslog(LOG_ERR, "%s: %s", filename, strerror(errno));
- return;
- }
-
- fseek(fp, 0L, SEEK_END);
- syslog(LOG_INFO, "netspool: processing %ld bytes from %s", 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,
- working_ignetcfg,
- the_netmap,
- netmap_changed);
- }
- msgstart = msgcur;
- }
-
- ++msgcur;
- nMessages ++;
- }
-
- msgend = msgcur - 1;
- if (msgstart >= 0L) {
- network_process_message(fp,
- msgstart,
- msgend,
- working_ignetcfg,
- the_netmap,
- netmap_changed);
- nMessages ++;
- }
-
- if (nMessages > 0)
- syslog(LOG_INFO, "netspool: processed %d messages in %s", nMessages, filename);
-
- fclose(fp);
- unlink(filename);
-}
-
-
-/*
- * Process anything in the inbound queue
- */
-void network_do_spoolin(HashList *working_ignetcfg, HashList *the_netmap, int *netmap_changed)
-{
- DIR *dp;
- struct dirent *d;
- struct dirent *filedir_entry;
- struct stat statbuf;
- char filename[PATH_MAX];
- static time_t last_spoolin_mtime = 0L;
- int d_type = 0;
- int d_namelen;
-
- /*
- * 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) {
- syslog(LOG_DEBUG, "netspool: nothing in inbound queue");
- return;
- }
- last_spoolin_mtime = statbuf.st_mtime;
- syslog(LOG_DEBUG, "netspool: processing inbound queue");
-
- /*
- * Ok, there's something interesting in there, so scan it.
- */
- dp = opendir(ctdl_netin_dir);
- if (dp == NULL) return;
-
- d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 1);
- if (d == NULL) {
- closedir(dp);
- return;
- }
-
- while ( (filedir_entry = readdir(dp)) , (filedir_entry != NULL))
- {
-#ifdef _DIRENT_HAVE_D_NAMLEN
- d_namelen = filedir_entry->d_namlen;
-
-#else
- d_namelen = strlen(filedir_entry->d_name);
-#endif
-
-#ifdef _DIRENT_HAVE_D_TYPE
- d_type = filedir_entry->d_type;
-#else
- d_type = DT_UNKNOWN;
-#endif
- if ((d_namelen > 1) && filedir_entry->d_name[d_namelen - 1] == '~')
- continue; /* Ignore backup files... */
-
- if ((d_namelen == 1) &&
- (filedir_entry->d_name[0] == '.'))
- continue;
-
- if ((d_namelen == 2) &&
- (filedir_entry->d_name[0] == '.') &&
- (filedir_entry->d_name[1] == '.'))
- continue;
-
- if (d_type == DT_UNKNOWN) {
- struct stat s;
- char path[PATH_MAX];
-
- snprintf(path,
- PATH_MAX,
- "%s/%s",
- ctdl_netin_dir,
- filedir_entry->d_name);
-
- if (lstat(path, &s) == 0) {
- d_type = IFTODT(s.st_mode);
- }
- }
-
- switch (d_type)
- {
- case DT_DIR:
- break;
- case DT_LNK: /* TODO: check whether its a file or a directory */
- case DT_REG:
- snprintf(filename,
- sizeof filename,
- "%s/%s",
- ctdl_netin_dir,
- d->d_name
- );
- network_process_file(filename,
- working_ignetcfg,
- the_netmap,
- netmap_changed);
- }
- }
-
- closedir(dp);
- free(d);
-}
-
/*
* 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.
projects / citadel.git / commitdiff