Added next bunch of IBC code
This commit is contained in:
Michiel Broek
parent
143de27956
commit
a9753fbdb0
316
mbtask/taskibc.c
316
mbtask/taskibc.c
@ -30,6 +30,7 @@
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#include "../config.h"
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#include "../lib/mbselib.h"
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#include "taskstat.h"
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#include "taskibc.h"
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@ -38,64 +39,68 @@
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int ibc_run = FALSE; /* Thread running */
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extern int T_Shutdown; /* Program shutdown */
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extern int internet; /* Internet status */
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time_t scfg_time = (time_t)0; /* Servers config time */
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ncs_list *ncsl = NULL; /* Neighbours list */
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int ls; /* Listen socket */
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struct sockaddr_in myaddr_in; /* Listen socket address */
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typedef enum {NCS_INIT, NCS_CALL, NCS_WAITPWD, NCS_CONNECT, NCS_HANGUP, NCS_FAIL} NCSTYPE;
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static char *ncsstate[] = {
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(char *)"init", (char *)"call", (char *)"waitpwd", (char *)"connect", (char *)"hangup", (char *)"fail"
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};
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/*
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* Send a UDP message to one other server.
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* Add a port to the portlist
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*/
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void send_server(char *name, char *msg)
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void fill_ncslist(ncs_list **, char *, char *);
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void fill_ncslist(ncs_list **fdp, char *server, char *passwd)
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{
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int a1, a2, a3, a4;
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int s; /* Socket */
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struct hostent *he; /* Host info */
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struct servent *se; /* Service information */
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struct sockaddr_in server; /* Destination address */
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char *errmsg;
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ncs_list *tmp, *ta;
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/*
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* Get IP address for the hostname
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*/
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if (sscanf(name,"%d.%d.%d.%d",&a1,&a2,&a3,&a4) == 4)
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server.sin_addr.s_addr = inet_addr(name);
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else if ((he = gethostbyname(name)))
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memcpy(&server.sin_addr,he->h_addr,he->h_length);
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else {
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switch (h_errno) {
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case HOST_NOT_FOUND: errmsg = (char *)"Authoritative: Host not found"; break;
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case TRY_AGAIN: errmsg = (char *)"Non-Authoritive: Host not found"; break;
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case NO_RECOVERY: errmsg = (char *)"Non recoverable errors"; break;
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default: errmsg = (char *)"Unknown error"; break;
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tmp = (ncs_list *)malloc(sizeof(ncs_list));
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memset(tmp, 0, sizeof(tmp));
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tmp->next = NULL;
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strncpy(tmp->server, server, 63);
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strncpy(tmp->passwd, passwd, 15);
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tmp->state = NCS_INIT;
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tmp->action = time(NULL);
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tmp->last = (time_t)0;
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tmp->version = 0;
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tmp->remove = FALSE;
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tmp->socket = -1;
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tmp->token = 0;
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if (*fdp == NULL) {
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*fdp = tmp;
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} else {
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for (ta = *fdp; ta; ta = ta->next)
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if (ta->next == NULL) {
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ta->next = (ncs_list *)tmp;
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break;
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}
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Syslog('+', "No IP address for %s: %s", name, errmsg);
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return;
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}
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}
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se = getservbyname("fido", "udp");
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if (se == NULL) {
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Syslog('n', "Service fido udp not in /etc/services");
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return;
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}
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server.sin_family = AF_INET;
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server.sin_port = se->s_port;
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Syslog('r', "Send to %s, port %d\n", inet_ntoa(server.sin_addr), ntohs(server.sin_port));
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void dump_ncslist(void);
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void dump_ncslist(void)
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{
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ncs_list *tmp;
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time_t now;
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s = socket(AF_INET, SOCK_DGRAM, 0);
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if (s == -1) {
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Syslog('r', "$Can't create socket");
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return;
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}
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now = time(NULL);
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Syslog('r', "Server State Del Next action");
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Syslog('r', "--------------------------------------------------------------- ------ --- --------------");
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if (bind(s, (struct sockaddr *)&server, sizeof(struct sockaddr_in)) == -1) {
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Syslog('r', "$Can't bind socket");
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return;
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}
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if (sendto(s, msg, strlen(msg), 0, (struct sockaddr *)&server, sizeof(struct sockaddr_in)) == -1) {
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Syslog('r', "$Can't send message");
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return;
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for (tmp = ncsl; tmp; tmp = tmp->next) {
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Syslog('r', "%-63s %-6s %s %d", tmp->server, ncsstate[tmp->state],
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tmp->remove ? "yes":"no ", (int)tmp->action - (int)now);
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}
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}
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@ -106,29 +111,239 @@ void send_server(char *name, char *msg)
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*/
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void send_all(char *msg)
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{
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send_server((char *)"router.mbse.ym", msg);
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send_server((char *)"hppa.mbse.ym", msg);
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}
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void check_servers(void)
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{
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char *errmsg, scfgfn[PATH_MAX], buf[512];
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FILE *fp;
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ncs_list *tnsl;
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int inlist, changed = FALSE;
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time_t now;
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int a1, a2, a3, a4;
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struct servent *se;
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struct hostent *he;
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sprintf(scfgfn, "%s/etc/ibcsrv.data", getenv("MBSE_ROOT"));
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/*
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* Check if configuration is changed, if so then apply the changes.
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*/
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if (file_time(scfgfn) != scfg_time) {
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Syslog('r', "%s filetime changed, rereading");
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if ((fp = fopen(scfgfn, "r"))) {
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fread(&ibcsrvhdr, sizeof(ibcsrvhdr), 1, fp);
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while (fread(&ibcsrv, ibcsrvhdr.recsize, 1, fp)) {
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Syslog('r', "IBC server \"%s\", Active %s", ibcsrv.server, ibcsrv.Active ?"Yes":"No");
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if (ibcsrv.Active) {
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inlist = FALSE;
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for (tnsl = ncsl; tnsl; tnsl = tnsl->next) {
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if (strcmp(tnsl->server, ibcsrv.server) == 0) {
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inlist = TRUE;
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}
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}
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if (!inlist ) {
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Syslog('r', " not in neighbour list, add");
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fill_ncslist(&ncsl, ibcsrv.server, ibcsrv.passwd);
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changed = TRUE;
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Syslog('+', "Added Internet BBS Chatserver %s", ibcsrv.server);
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}
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}
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}
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/*
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* Now check for neighbours to delete
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*/
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for (tnsl = ncsl; tnsl; tnsl = tnsl->next) {
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fseek(fp, ibcsrvhdr.hdrsize, SEEK_SET);
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inlist = FALSE;
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Syslog('r', "IBC server \"%s\"", ibcsrv.server);
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while (fread(&ibcsrv, ibcsrvhdr.recsize, 1, fp)) {
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if ((strcmp(tnsl->server, ibcsrv.server) == 0) && ibcsrv.Active) {
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inlist = TRUE;
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}
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}
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if (!inlist) {
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Syslog('r', " not in configuration, remove");
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tnsl->remove = TRUE;
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tnsl->action = time(NULL);
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changed = TRUE;
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}
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}
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fclose(fp);
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}
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scfg_time = file_time(scfgfn);
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}
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if (changed)
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dump_ncslist();
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/*
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* Check if we need to make state changes
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*/
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changed = FALSE;
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now = time(NULL);
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for (tnsl = ncsl; tnsl; tnsl = tnsl->next) {
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if (((int)tnsl->action - (int)now) <= 0) {
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switch (tnsl->state) {
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case NCS_INIT: Syslog('r', "%s init", tnsl->server);
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changed = TRUE;
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/*
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* If Internet is available, setup the connection.
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*/
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if (internet) {
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/*
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* Get IP address for the hostname, set default next action
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* to 60 seconds.
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*/
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tnsl->action = now + (time_t)60;
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memset(&tnsl->servaddr_in, 0, sizeof(struct sockaddr_in));
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se = getservbyname("fido", "udp");
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tnsl->servaddr_in.sin_family = AF_INET;
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tnsl->servaddr_in.sin_port = se->s_port;
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if (sscanf(tnsl->server,"%d.%d.%d.%d",&a1,&a2,&a3,&a4) == 4)
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tnsl->servaddr_in.sin_addr.s_addr = inet_addr(tnsl->server);
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else if ((he = gethostbyname(tnsl->server)))
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memcpy(&tnsl->servaddr_in.sin_addr, he->h_addr, he->h_length);
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else {
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switch (h_errno) {
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case HOST_NOT_FOUND: errmsg = (char *)"Authoritative: Host not found"; break;
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case TRY_AGAIN: errmsg = (char *)"Non-Authoritive: Host not found"; break;
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case NO_RECOVERY: errmsg = (char *)"Non recoverable errors"; break;
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default: errmsg = (char *)"Unknown error"; break;
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}
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Syslog('+', "No IP address for %s: %s", tnsl->server, errmsg);
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tnsl->state = NCS_FAIL;
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break;
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}
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tnsl->socket = socket(AF_INET, SOCK_DGRAM, 0);
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if (tnsl->socket == -1) {
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Syslog('+', "$Can't create socket for %s", tnsl->server);
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tnsl->state = NCS_FAIL;
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break;
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}
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Syslog('r', "socket %d", tnsl->socket);
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tnsl->token = gettoken();
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tnsl->state = NCS_CALL;
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tnsl->action = now + (time_t)1;
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} else {
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tnsl->action = now + (time_t)10;
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}
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break;
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case NCS_CALL: Syslog('r', "%s call", tnsl->server);
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sprintf(buf, "PASS %s 0000 IBC| %s\r", tnsl->passwd, tnsl->compress ? "Z":"");
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if (sendto(tnsl->socket, buf, strlen(buf), 0,
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(struct sockaddr *)&tnsl->servaddr_in, sizeof(struct sockaddr_in)) == -1) {
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Syslog('r', "$Can't send message");
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}
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sprintf(buf, "SERVER seaport 0 %ld mbsebbs v%s\r", tnsl->token, VERSION);
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if (sendto(tnsl->socket, buf, strlen(buf), 0,
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(struct sockaddr *)&tnsl->servaddr_in, sizeof(struct sockaddr_in)) == -1) {
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Syslog('r', "$Can't send message");
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}
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tnsl->action = now + (time_t)50;
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tnsl->state = NCS_WAITPWD;
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changed = TRUE;
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break;
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case NCS_WAITPWD: /*
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* This state can be left by before the timeout is reached
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* by a reply from the remote if the connection is accepted.
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*/
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Syslog('r', "%s waitpwd", tnsl->server);
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tnsl->state = NCS_CALL;
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break;
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}
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}
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}
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if (changed)
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dump_ncslist();
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}
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/*
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* IRC thread
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* IBC thread
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*/
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void *ibc_thread(void *dummy)
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{
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struct servent *se;
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struct pollfd pfd;
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int rc, len;
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socklen_t sl;
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char buf[1024];
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Syslog('+', "Starting IBC thread");
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if ((se = getservbyname("fido", "udp")) == NULL) {
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Syslog('!', "No fido udp entry in /etc/services, cannot start Internet BBS Chat");
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goto exit;
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}
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Syslog('+', "Starting IBC thread");
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myaddr_in.sin_family = AF_INET;
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myaddr_in.sin_addr.s_addr = INADDR_ANY;
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myaddr_in.sin_port = se->s_port;
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Syslog('+', "Listen on %s, port %d\n", inet_ntoa(myaddr_in.sin_addr), ntohs(myaddr_in.sin_port));
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ls = socket(AF_INET, SOCK_DGRAM, 0);
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if (ls == -1) {
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Syslog('!', "$Can't create socket");
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goto exit;
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}
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if (bind(ls, (struct sockaddr *)&myaddr_in, sizeof(struct sockaddr_in)) == -1) {
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Syslog('!', "$Can't bind socket");
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goto exit;
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}
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ibc_run = TRUE;
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while (! T_Shutdown) {
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sleep(1);
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/*
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* First check Shutdown requested
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*/
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if (T_Shutdown) {
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}
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/*
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* Check neighbour servers state
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*/
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check_servers();
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/*
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* Get any incoming messages
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*/
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pfd.fd = ls;
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pfd.events = POLLIN;
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pfd.revents = 0;
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if ((rc = poll(&pfd, 1, 1000) < 0)) {
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Syslog('r', "$poll/select failed");
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} else {
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Syslog('r', "poll_thread: poll interrupted rc=%d events=%04x", rc, pfd.revents);
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if (pfd.revents & POLLIN || pfd.revents & POLLERR || pfd.revents & POLLHUP || pfd.revents & POLLNVAL) {
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sl = sizeof(myaddr_in);
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if ((len = recvfrom(ls, &buf, sizeof(buf)-1, 0,(struct sockaddr *)&myaddr_in, &sl)) != -1) {
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Syslog('r', "< : \"%s\"", printable(buf, 0));
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} else {
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Syslog('r', "recvfrom returned len=%d", len);
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}
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}
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}
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}
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exit:
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@ -138,7 +353,4 @@ exit:
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}
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#endif
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@ -4,8 +4,30 @@
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/* $Id$ */
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#ifdef USE_EXPERIMENT
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/*
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* Linked list of neighbour chatservers
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*/
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typedef struct _ncs_list {
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struct _ncs_list *next;
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char server[64]; /* Server address */
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char passwd[16]; /* Server password */
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int state; /* Connection state */
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time_t action; /* Time for next action */
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time_t last; /* Last received message */
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int version; /* Protocol version of peer */
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unsigned remove : 1; /* If entry must be removed */
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unsigned compress : 1; /* User link compression */
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struct sockaddr_in servaddr_in; /* Peer socketaddress */
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int socket; /* Peer socket */
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unsigned long token; /* Server token */
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} ncs_list;
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void send_all(char *);
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void *ibc_thread(void *);
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#endif
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#endif
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@ -349,6 +349,15 @@ char *getseq(void)
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unsigned long gettoken(void)
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{
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status.sequence++;
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status_write();
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return status.sequence;
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}
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int sem_set(char *sem, int value)
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{
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if (!strcmp(sem, "scanout")) {
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@ -17,6 +17,7 @@ void stat_inc_cerr(void); /* Increase comms error */
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char *stat_status(void); /* Return status record */
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int stat_bbs_stat(void); /* Get BBS open status */
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char *getseq(void); /* Get next sequence number */
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unsigned long gettoken(void); /* Get next sequence number */
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int get_zmh(void); /* Check Zone Mail Hour */
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int sem_set(char *, int); /* Set/Reset semafore */
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char *sem_status(char *); /* Get semafore status */
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