#include "include/ctdl_module.h"
HashList *CfgTypeHash = NULL;
-
-
+/*-----------------------------------------------------------------------------*
+ * Per room network configs *
+ *-----------------------------------------------------------------------------*/
void RegisterRoomCfgType(const char* Name, long len, RoomNetCfg eCfg, CfgLineParser p, int uniq, CfgLineSerializer s, CfgLineDeAllocator d)
{
CfgLineType *pCfg;
*pOneRNCFG=NULL;
}
+
+/*-----------------------------------------------------------------------------*
+ * Per room network configs : exchange with client *
+ *-----------------------------------------------------------------------------*/
+void cmd_gnet(char *argbuf)
+{
+ char filename[PATH_MAX];
+ char buf[SIZ];
+ FILE *fp;
+
+
+ if (!IsEmptyStr(argbuf))
+ {
+ if (CtdlAccessCheck(ac_aide)) return;
+ if (strcmp(argbuf, FILE_MAILALIAS))
+ {
+ cprintf("%d No such file or directory\n",
+ ERROR + INTERNAL_ERROR);
+ return;
+ }
+ safestrncpy(filename, file_mail_aliases, sizeof(filename));
+ cprintf("%d Settings for <%s>\n",
+ LISTING_FOLLOWS,
+ filename);
+ }
+ else
+ {
+ if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
+ /* users can edit the netconfigs for their own mailbox rooms */
+ }
+ else if (CtdlAccessCheck(ac_room_aide)) return;
+
+ assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
+ cprintf("%d Network settings for room #%ld <%s>\n",
+ LISTING_FOLLOWS,
+ CC->room.QRnumber, CC->room.QRname);
+ }
+
+ fp = fopen(filename, "r");
+ if (fp != NULL) {
+ while (fgets(buf, sizeof buf, fp) != NULL) {
+ buf[strlen(buf)-1] = 0;
+ cprintf("%s\n", buf);
+ }
+ fclose(fp);
+ }
+
+ cprintf("000\n");
+}
+
+#define nForceAliases 5
+const ConstStr ForceAliases[nForceAliases] = {
+ {HKEY("bbs,")},
+ {HKEY("root,")},
+ {HKEY("Auto,")},
+ {HKEY("postmaster,")},
+ {HKEY("abuse,")}
+};
+
+void cmd_snet(char *argbuf) {
+ char tempfilename[PATH_MAX];
+ char filename[PATH_MAX];
+ int TmpFD;
+ StrBuf *Line;
+ struct stat StatBuf;
+ long len;
+ int rc;
+ int IsMailAlias = 0;
+ int MailAliasesFound[nForceAliases];
+
+ unbuffer_output();
+
+ if (!IsEmptyStr(argbuf))
+ {
+ if (CtdlAccessCheck(ac_aide)) return;
+ if (strcmp(argbuf, FILE_MAILALIAS))
+ {
+ cprintf("%d No such file or directory\n",
+ ERROR + INTERNAL_ERROR);
+ return;
+ }
+ len = safestrncpy(filename, file_mail_aliases, sizeof(filename));
+ memset(MailAliasesFound, 0, sizeof(MailAliasesFound));
+ memcpy(tempfilename, filename, len + 1);
+ IsMailAlias = 1;
+ }
+ else
+ {
+ if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
+ /* users can edit the netconfigs for their own mailbox rooms */
+ }
+ else if (CtdlAccessCheck(ac_room_aide)) return;
+
+ len = assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
+ memcpy(tempfilename, filename, len + 1);
+ }
+ memset(&StatBuf, 0, sizeof(struct stat));
+ if ((stat(filename, &StatBuf) == -1) || (StatBuf.st_size == 0))
+ StatBuf.st_size = 80; /* Not there or empty? guess 80 chars line. */
+
+ sprintf(tempfilename + len, ".%d", CC->cs_pid);
+ errno = 0;
+ TmpFD = open(tempfilename, O_CREAT|O_EXCL|O_RDWR, S_IRUSR|S_IWUSR);
+
+ if ((TmpFD > 0) && (errno == 0))
+ {
+ char *tmp = malloc(StatBuf.st_size * 2);
+ memset(tmp, ' ', StatBuf.st_size * 2);
+ rc = write(TmpFD, tmp, StatBuf.st_size * 2);
+ free(tmp);
+ if ((rc <= 0) || (rc != StatBuf.st_size * 2))
+ {
+ close(TmpFD);
+ cprintf("%d Unable to allocate the space required for %s: %s\n",
+ ERROR + INTERNAL_ERROR,
+ tempfilename,
+ strerror(errno));
+ unlink(tempfilename);
+ return;
+ }
+ lseek(TmpFD, SEEK_SET, 0);
+ }
+ else {
+ cprintf("%d Unable to allocate the space required for %s: %s\n",
+ ERROR + INTERNAL_ERROR,
+ tempfilename,
+ strerror(errno));
+ unlink(tempfilename);
+ return;
+ }
+ Line = NewStrBuf();
+
+ cprintf("%d %s\n", SEND_LISTING, tempfilename);
+
+ len = 0;
+ while (rc = CtdlClientGetLine(Line),
+ (rc >= 0))
+ {
+ if ((rc == 3) && (strcmp(ChrPtr(Line), "000") == 0))
+ break;
+ if (IsMailAlias)
+ {
+ int i;
+
+ for (i = 0; i < nForceAliases; i++)
+ {
+ if ((!MailAliasesFound[i]) &&
+ (strncmp(ForceAliases[i].Key,
+ ChrPtr(Line),
+ ForceAliases[i].len) == 0)
+ )
+ {
+ MailAliasesFound[i] = 1;
+ break;
+ }
+ }
+ }
+
+ StrBufAppendBufPlain(Line, HKEY("\n"), 0);
+ write(TmpFD, ChrPtr(Line), StrLength(Line));
+ len += StrLength(Line);
+ }
+ FreeStrBuf(&Line);
+ ftruncate(TmpFD, len);
+ close(TmpFD);
+
+ if (IsMailAlias)
+ {
+ int i, state;
+ /*
+ * Sanity check whether all aliases required by the RFCs were set
+ * else bail out.
+ */
+ state = 1;
+ for (i = 0; i < nForceAliases; i++)
+ {
+ if (!MailAliasesFound[i])
+ state = 0;
+ }
+ if (state == 0)
+ {
+ cprintf("%d won't do this - you're missing an RFC required alias.\n",
+ ERROR + INTERNAL_ERROR);
+ unlink(tempfilename);
+ return;
+ }
+ }
+
+ /* Now copy the temp file to its permanent location.
+ * (We copy instead of link because they may be on different filesystems)
+ */
+ begin_critical_section(S_NETCONFIGS);
+ rename(tempfilename, filename);
+ end_critical_section(S_NETCONFIGS);
+}
+
+
+/*-----------------------------------------------------------------------------*
+ * Per node network configs *
+ *-----------------------------------------------------------------------------*/
+void DeleteCtdlNodeConf(void *vNode)
+{
+ CtdlNodeConf *Node = (CtdlNodeConf*) vNode;
+ FreeStrBuf(&Node->NodeName);
+ FreeStrBuf(&Node->Secret);
+ FreeStrBuf(&Node->Host);
+ FreeStrBuf(&Node->Port);
+ free(Node);
+}
+
+CtdlNodeConf *NewNode(StrBuf *SerializedNode)
+{
+ const char *Pos = NULL;
+ CtdlNodeConf *Node;
+
+ /* we need at least 4 pipes and some other text so its invalid. */
+ if (StrLength(SerializedNode) < 8)
+ return NULL;
+ Node = (CtdlNodeConf *) malloc(sizeof(CtdlNodeConf));
+
+ Node->DeleteMe = 0;
+
+ Node->NodeName=NewStrBuf();
+ StrBufExtract_NextToken(Node->NodeName, SerializedNode, &Pos, '|');
+
+ Node->Secret=NewStrBuf();
+ StrBufExtract_NextToken(Node->Secret, SerializedNode, &Pos, '|');
+
+ Node->Host=NewStrBuf();
+ StrBufExtract_NextToken(Node->Host, SerializedNode, &Pos, '|');
+
+ Node->Port=NewStrBuf();
+ StrBufExtract_NextToken(Node->Port, SerializedNode, &Pos, '|');
+ return Node;
+}
+
+
+/*
+ * Load or refresh the Citadel network (IGnet) configuration for this node.
+ */
+HashList* CtdlLoadIgNetCfg(void)
+{
+ const char *LinePos;
+ char *Cfg;
+ StrBuf *Buf;
+ StrBuf *LineBuf;
+ HashList *Hash;
+ CtdlNodeConf *Node;
+
+ Cfg = CtdlGetSysConfig(IGNETCFG);
+ if ((Cfg == NULL) || IsEmptyStr(Cfg)) {
+ if (Cfg != NULL)
+ free(Cfg);
+ return NULL;
+ }
+
+ Hash = NewHash(1, NULL);
+ Buf = NewStrBufPlain(Cfg, -1);
+ free(Cfg);
+ LineBuf = NewStrBufPlain(NULL, StrLength(Buf));
+ LinePos = NULL;
+ do
+ {
+ StrBufSipLine(LineBuf, Buf, &LinePos);
+ if (StrLength(LineBuf) != 0) {
+ Node = NewNode(LineBuf);
+ if (Node != NULL) {
+ Put(Hash, SKEY(Node->NodeName), Node, DeleteCtdlNodeConf);
+ }
+ }
+ } while (LinePos != StrBufNOTNULL);
+ FreeStrBuf(&Buf);
+ FreeStrBuf(&LineBuf);
+ return Hash;
+}
+
+
+int is_recipient(OneRoomNetCfg *RNCfg, const char *Name)
+{
+ const RoomNetCfg RecipientCfgs[] = {
+ listrecp,
+ digestrecp,
+ participate,
+ maxRoomNetCfg
+ };
+ int i;
+ RoomNetCfgLine *nptr;
+ size_t len;
+
+ len = strlen(Name);
+ i = 0;
+ while (RecipientCfgs[i] != maxRoomNetCfg)
+ {
+ nptr = RNCfg->NetConfigs[RecipientCfgs[i]];
+
+ while (nptr != NULL)
+ {
+ if ((StrLength(nptr->Value) == len) &&
+ (!strcmp(Name, ChrPtr(nptr->Value))))
+ {
+ return 1;
+ }
+ nptr = nptr->next;
+ }
+ }
+ return 0;
+}
+
+
+
+int CtdlNetconfigCheckRoomaccess(
+ char *errmsgbuf,
+ size_t n,
+ const char* RemoteIdentifier)
+{
+ OneRoomNetCfg *RNCfg;
+ char filename[SIZ];
+ int found;
+
+ if (RemoteIdentifier == NULL)
+ {
+ snprintf(errmsgbuf, n, "Need sender to permit access.");
+ return (ERROR + USERNAME_REQUIRED);
+ }
+
+ assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
+ begin_critical_section(S_NETCONFIGS);
+ if (!read_spoolcontrol_file(&RNCfg, filename))
+ {
+ end_critical_section(S_NETCONFIGS);
+ snprintf(errmsgbuf, n,
+ "This mailing list only accepts posts from subscribers.");
+ return (ERROR + NO_SUCH_USER);
+ }
+ end_critical_section(S_NETCONFIGS);
+ found = is_recipient (RNCfg, RemoteIdentifier);
+ free_spoolcontrol_struct(&RNCfg);
+ if (found) {
+ return (0);
+ }
+ else {
+ snprintf(errmsgbuf, n,
+ "This mailing list only accepts posts from subscribers.");
+ return (ERROR + NO_SUCH_USER);
+ }
+}
+
+
+
+/*
+ * cmd_netp() - authenticate to the server as another Citadel node polling
+ * for network traffic
+ */
+void cmd_netp(char *cmdbuf)
+{
+ struct CitContext *CCC = CC;
+ HashList *working_ignetcfg;
+ char *node;
+ StrBuf *NodeStr;
+ long nodelen;
+ int v;
+ long lens[2];
+ const char *strs[2];
+
+ const StrBuf *secret = NULL;
+ const StrBuf *nexthop = NULL;
+ char err_buf[SIZ] = "";
+
+ /* Authenticate */
+ node = CCC->curr_user;
+ nodelen = extract_token(CCC->curr_user, cmdbuf, 0, '|', sizeof CCC->curr_user);
+ NodeStr = NewStrBufPlain(node, nodelen);
+ /* load the IGnet Configuration to check node validity */
+ working_ignetcfg = CtdlLoadIgNetCfg();
+ v = CtdlIsValidNode(&nexthop, &secret, NodeStr, working_ignetcfg, NULL);
+ if (v != 0) {
+ snprintf(err_buf, sizeof err_buf,
+ "An unknown Citadel server called \"%s\" attempted to connect from %s [%s].\n",
+ node, CCC->cs_host, CCC->cs_addr
+ );
+ syslog(LOG_WARNING, "%s", err_buf);
+ cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
+
+ strs[0] = CCC->cs_addr;
+ lens[0] = strlen(CCC->cs_addr);
+
+ strs[1] = "SRV_UNKNOWN";
+ lens[1] = sizeof("SRV_UNKNOWN" - 1);
+
+ CtdlAideFPMessage(
+ err_buf,
+ "IGNet Networking.",
+ 2, strs, (long*) &lens);
+
+ DeleteHash(&working_ignetcfg);
+ FreeStrBuf(&NodeStr);
+ return;
+ }
+
+ extract_token(CCC->user.password, cmdbuf, 1, '|', sizeof CCC->user.password);
+ if (strcasecmp(CCC->user.password, ChrPtr(secret))) {
+ snprintf(err_buf, sizeof err_buf,
+ "A Citadel server at %s [%s] failed to authenticate as network node \"%s\".\n",
+ CCC->cs_host, CCC->cs_addr, node
+ );
+ syslog(LOG_WARNING, "%s", err_buf);
+ cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
+
+ strs[0] = CCC->cs_addr;
+ lens[0] = strlen(CCC->cs_addr);
+
+ strs[1] = "SRV_PW";
+ lens[1] = sizeof("SRV_PW" - 1);
+
+ CtdlAideFPMessage(
+ err_buf,
+ "IGNet Networking.",
+ 2, strs, (long*) &lens);
+
+ DeleteHash(&working_ignetcfg);
+ FreeStrBuf(&NodeStr);
+ return;
+ }
+
+ if (CtdlNetworkTalkingTo(node, nodelen, NTT_CHECK)) {
+ syslog(LOG_WARNING, "Duplicate session for network node <%s>", node);
+ cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
+ DeleteHash(&working_ignetcfg);
+ FreeStrBuf(&NodeStr);
+ return;
+ }
+ nodelen = safestrncpy(CCC->net_node, node, sizeof CCC->net_node);
+ CtdlNetworkTalkingTo(CCC->net_node, nodelen, NTT_ADD);
+ syslog(LOG_NOTICE, "Network node <%s> logged in from %s [%s]\n",
+ CCC->net_node, CCC->cs_host, CCC->cs_addr
+ );
+ cprintf("%d authenticated as network node '%s'\n", CIT_OK, CCC->net_node);
+ DeleteHash(&working_ignetcfg);
+ FreeStrBuf(&NodeStr);
+}
+
+
+/*-----------------------------------------------------------------------------*
+ * Network maps: evaluate other nodes *
+ *-----------------------------------------------------------------------------*/
+
+void DeleteNetMap(void *vNetMap)
+{
+ CtdlNetMap *TheNetMap = (CtdlNetMap*) vNetMap;
+ FreeStrBuf(&TheNetMap->NodeName);
+ FreeStrBuf(&TheNetMap->NextHop);
+ free(TheNetMap);
+}
+
+CtdlNetMap *NewNetMap(StrBuf *SerializedNetMap)
+{
+ const char *Pos = NULL;
+ CtdlNetMap *NM;
+
+ /* we need at least 3 pipes and some other text so its invalid. */
+ if (StrLength(SerializedNetMap) < 6)
+ return NULL;
+ NM = (CtdlNetMap *) malloc(sizeof(CtdlNetMap));
+
+ NM->NodeName=NewStrBuf();
+ StrBufExtract_NextToken(NM->NodeName, SerializedNetMap, &Pos, '|');
+
+ NM->lastcontact = StrBufExtractNext_long(SerializedNetMap, &Pos, '|');
+
+ NM->NextHop=NewStrBuf();
+ StrBufExtract_NextToken(NM->NextHop, SerializedNetMap, &Pos, '|');
+
+ return NM;
+}
+
+HashList* CtdlReadNetworkMap(void)
+{
+ const char *LinePos;
+ char *Cfg;
+ StrBuf *Buf;
+ StrBuf *LineBuf;
+ HashList *Hash;
+ CtdlNetMap *TheNetMap;
+
+ Cfg = CtdlGetSysConfig(IGNETMAP);
+ if ((Cfg == NULL) || IsEmptyStr(Cfg)) {
+ if (Cfg != NULL)
+ free(Cfg);
+ return NULL;
+ }
+
+ Hash = NewHash(1, NULL);
+ Buf = NewStrBufPlain(Cfg, -1);
+ free(Cfg);
+ LineBuf = NewStrBufPlain(NULL, StrLength(Buf));
+ LinePos = NULL;
+ while (StrBufSipLine(Buf, LineBuf, &LinePos))
+ {
+ TheNetMap = NewNetMap(LineBuf);
+ if (TheNetMap != NULL) { /* TODO: is the NodeName Uniq? */
+ Put(Hash, SKEY(TheNetMap->NodeName), TheNetMap, DeleteNetMap);
+ }
+ }
+ FreeStrBuf(&Buf);
+ FreeStrBuf(&LineBuf);
+ return Hash;
+}
+
+StrBuf *CtdlSerializeNetworkMap(HashList *Map)
+{
+ void *vMap;
+ const char *key;
+ long len;
+ StrBuf *Ret = NewStrBuf();
+ HashPos *Pos = GetNewHashPos(Map, 0);
+
+ while (GetNextHashPos(Map, Pos, &len, &key, &vMap))
+ {
+ CtdlNetMap *pMap = (CtdlNetMap*) vMap;
+ StrBufAppendBuf(Ret, pMap->NodeName, 0);
+ StrBufAppendBufPlain(Ret, HKEY("|"), 0);
+
+ StrBufAppendPrintf(Ret, "%ld", pMap->lastcontact, 0);
+ StrBufAppendBufPlain(Ret, HKEY("|"), 0);
+
+ StrBufAppendBuf(Ret, pMap->NextHop, 0);
+ StrBufAppendBufPlain(Ret, HKEY("\n"), 0);
+ }
+ DeleteHashPos(&Pos);
+ return Ret;
+}
+
+
+/*
+ * Learn topology from path fields
+ */
+void NetworkLearnTopology(char *node, char *path, HashList *the_netmap, int *netmap_changed)
+{
+ CtdlNetMap *pNM = NULL;
+ void *vptr;
+ char nexthop[256];
+ CtdlNetMap *nmptr;
+
+ if (GetHash(the_netmap, node, strlen(node), &vptr) &&
+ (vptr != NULL))/* TODO: is the NodeName Uniq? */
+ {
+ pNM = (CtdlNetMap*)vptr;
+ extract_token(nexthop, path, 0, '!', sizeof nexthop);
+ if (!strcmp(nexthop, ChrPtr(pNM->NextHop))) {
+ pNM->lastcontact = time(NULL);
+ (*netmap_changed) ++;
+ return;
+ }
+ }
+
+ /* If we got here then it's not in the map, so add it. */
+ nmptr = (CtdlNetMap *) malloc(sizeof (CtdlNetMap));
+ nmptr->NodeName = NewStrBufPlain(node, -1);
+ nmptr->lastcontact = time(NULL);
+ nmptr->NextHop = NewStrBuf ();
+ StrBufExtract_tokenFromStr(nmptr->NextHop, path, strlen(path), 0, '!');
+ /* TODO: is the NodeName Uniq? */
+ Put(the_netmap, SKEY(nmptr->NodeName), nmptr, DeleteNetMap);
+ (*netmap_changed) ++;
+}
+
+
+/*
+ * Check the network map and determine whether the supplied node name is
+ * valid. If it is not a neighbor node, supply the name of a neighbor node
+ * which is the next hop. If it *is* a neighbor node, we also fill in the
+ * shared secret.
+ */
+int CtdlIsValidNode(const StrBuf **nexthop,
+ const StrBuf **secret,
+ StrBuf *node,
+ HashList *IgnetCfg,
+ HashList *the_netmap)
+{
+ void *vNetMap;
+ void *vNodeConf;
+ CtdlNodeConf *TheNode;
+ CtdlNetMap *TheNetMap;
+
+ if (StrLength(node) == 0) {
+ return(-1);
+ }
+
+ /*
+ * First try the neighbor nodes
+ */
+ if (GetCount(IgnetCfg) == 0) {
+ syslog(LOG_INFO, "IgnetCfg is empty!\n");
+ if (nexthop != NULL) {
+ *nexthop = NULL;
+ }
+ return(-1);
+ }
+
+ /* try to find a neigbour with the name 'node' */
+ if (GetHash(IgnetCfg, SKEY(node), &vNodeConf) &&
+ (vNodeConf != NULL))
+ {
+ TheNode = (CtdlNodeConf*)vNodeConf;
+ if (secret != NULL)
+ *secret = TheNode->Secret;
+ return 0; /* yup, it's a direct neighbor */
+ }
+
+ /*
+ * If we get to this point we have to see if we know the next hop
+ *//* TODO: is the NodeName Uniq? */
+ if ((GetCount(the_netmap) > 0) &&
+ (GetHash(the_netmap, SKEY(node), &vNetMap)))
+ {
+ TheNetMap = (CtdlNetMap*)vNetMap;
+ if (nexthop != NULL)
+ *nexthop = TheNetMap->NextHop;
+ return(0);
+ }
+
+ /*
+ * If we get to this point, the supplied node name is bogus.
+ */
+ syslog(LOG_ERR, "Invalid node name <%s>\n", ChrPtr(node));
+ return(-1);
+}
+
+
+/*
+ * Module entry point
+ */
+CTDL_MODULE_INIT(netconfig)
+{
+ if (!threading)
+ {
+
+ CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
+ CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
+ CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
+ }
+ return "netconfig";
+}
projects / citadel.git / blobdiff