diff options
Diffstat (limited to 'hunt/huntd/faketalk.c')
| -rw-r--r-- | hunt/huntd/faketalk.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/hunt/huntd/faketalk.c b/hunt/huntd/faketalk.c new file mode 100644 index 00000000..2a50c3dd --- /dev/null +++ b/hunt/huntd/faketalk.c @@ -0,0 +1,217 @@ +/* + * Hunt + * Copyright (c) 1985 Conrad C. Huang, Gregory S. Couch, Kenneth C.R.C. Arnold + * San Francisco, California + * + * Copyright (c) 1985 Regents of the University of California. + * All rights reserved. The Berkeley software License Agreement + * specifies the terms and conditions for redistribution. + */ + +#include "bsd.h" + +#if defined(TALK_43) || defined(TALK_42) + +# include <stdio.h> +# include <string.h> +# include <netdb.h> +# include "talk_ctl.h" +# include <ctype.h> +# include <signal.h> +# include <sys/time.h> +extern int errno; + +# define TRUE 1 +# define FALSE 0 + +/* defines for fake talk message to announce start of game */ +# ifdef TALK_43 +# define MASQUERADE "\"Hunt Game\"" +# else +# define MASQUERADE "HuntGame" +# endif +# define RENDEZVOUS "hunt-players" +# define ARGV0 "HUNT-ANNOUNCE" + +extern char *my_machine_name; +extern char *First_arg, *Last_arg; + +/* + * exorcise - disspell zombies + */ + +SIGNAL_TYPE +exorcise() +{ + (void) wait(0); +} + +/* + * query the local SMTP daemon to expand the RENDEZVOUS mailing list + * and fake a talk request to each address thus found. + */ + +faketalk() +{ + struct servent *sp; + char buf[BUFSIZ]; + FILE *f; + int service; /* socket of service */ + struct sockaddr_in des; /* address of destination */ + char *a, *b; + extern char **environ; + + (void) signal(SIGCHLD, exorcise); + + if (fork() != 0) + return; + + (void) signal(SIGINT, SIG_IGN); + (void) signal(SIGPIPE, SIG_IGN); + + /* + * change argv so that a ps shows ARGV0 + */ + *environ = NULL; + for (a = First_arg, b = ARGV0; a < Last_arg; a++) { + if (*b) + *a = *b++; + else + *a = ' '; + } + + /* + * initialize "talk" + */ + get_local_name(MASQUERADE); + open_ctl(); + + /* + * start fetching addresses + */ + + if ((sp = getservbyname("smtp", (char *) NULL)) == NULL) { +# ifdef LOG + syslog(LOG_ERR, "faketalk: smtp protocol not supported\n"); +# else + fprintf(stderr, "faketalk: stmp protocol not supported\n"); +# endif + _exit(1); + } + + memset(&des, 0, sizeof (des)); + des.sin_family = AF_INET; + des.sin_addr = my_machine_addr; + des.sin_port = sp->s_port; + + if ((service = socket(des.sin_family, SOCK_STREAM, 0)) < 0) { +# ifdef LOG + syslog(LOG_ERR, "falktalk: socket"); +# else + perror("falktalk: socket"); +# endif + _exit(-1); + } + + if (connect(service, (struct sockaddr *) &des, sizeof(des)) != 0) { +# ifdef LOG + syslog(LOG_ERR, "faketalk: connect"); +# else + perror("faketalk: connect"); +# endif + _exit(-1); + } + if ((f = fdopen(service, "r")) == NULL) { +# ifdef LOG + syslog(LOG_ERR, "fdopen failed\n"); +# else + fprintf(stderr, "fdopen failed\n"); +# endif + _exit(-2); + } + + (void) fgets(buf, BUFSIZ, f); + (void) sprintf(buf, "HELO HuntGame@%s\r\n", my_machine_name); + (void) write(service, buf, strlen(buf)); + (void) fgets(buf, BUFSIZ, f); + (void) sprintf(buf, "EXPN %s@%s\r\n", RENDEZVOUS, my_machine_name); + (void) write(service, buf, strlen(buf)); + while (fgets(buf, BUFSIZ, f) != NULL) { + char *s, *t; + + if (buf[0] != '2' || buf[1] != '5' || buf[2] != '0') + break; + if ((s = strchr(buf + 4, '<')) == NULL) + s = buf + 4, t = buf + strlen(buf) - 1; + else { + s += 1; + if ((t = strrchr(s, '>')) == NULL) + t = s + strlen(s) - 1; + else + t -= 1; + } + while (isspace(*s)) + s += 1; + if (*s == '\\') + s += 1; + while (isspace(*t)) + t -= 1; + *(t + 1) = '\0'; + do_announce(s); /* construct and send talk request */ + if (buf[3] == ' ') + break; + } + (void) shutdown(service, 2); + (void) close(service); + _exit(0); +} + +/* + * The msg.id's for the invitations on the local and remote machines. + * These are used to delete the invitations. + */ + +do_announce(s) + char *s; +{ + CTL_RESPONSE response; + extern struct sockaddr_in ctl_addr; + + get_remote_name(s); /* setup his_machine_addr, msg.r_name */ + +# ifdef TALK_43 +# if BSD_RELEASE >= 44 + msg.ctl_addr = *(struct osockaddr *) &ctl_addr; +# else + msg.ctl_addr = *(struct sockaddr *) &ctl_addr; +# endif + msg.ctl_addr.sa_family = htons(msg.ctl_addr.sa_family); +# else + msg.ctl_addr = ctl_addr; + msg.ctl_addr.sin_family = htons(msg.ctl_addr.sin_family); +# endif + msg.id_num = (int) htonl((u_long) -1); /* an impossible id_num */ + ctl_transact(his_machine_addr, msg, ANNOUNCE, &response); + if (response.answer != SUCCESS) + return; + + /* + * Have the daemons delete the invitations now that we + * have announced. + */ + + /* we don't care if cleanup doesn't make it. */ + msg.type = DELETE; + msg.id_num = (int) htonl(response.id_num); + daemon_addr.sin_addr = his_machine_addr; + if (sendto(ctl_sockt, (char *) &msg, sizeof (msg), 0, + (struct sockaddr *) &daemon_addr, sizeof(daemon_addr)) + != sizeof(msg)) + p_error("send delete remote"); +} +#else +faketalk() +{ + return; +} +#endif |