398 lines
10 KiB
C
398 lines
10 KiB
C
/*****************************************************************************
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*
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* $Id$
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* Purpose: Fidonet mailer
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*
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*****************************************************************************
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* Copyright (C) 1997-2004
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*
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* Michiel Broek FIDO: 2:280/2802
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* Beekmansbos 10
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* 1971 BV IJmuiden
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* the Netherlands
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*
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* This file is part of MBSE BBS.
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*
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* This BBS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* MBSE BBS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MBSE BBS; see the file COPYING. If not, write to the Free
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* Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*****************************************************************************/
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#include "../config.h"
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#include "../lib/libs.h"
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#include "../lib/structs.h"
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#include "../lib/users.h"
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#include "../lib/records.h"
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#include "../lib/common.h"
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#include "../lib/nodelist.h"
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#include "../lib/clcomm.h"
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#include "../lib/dbcfg.h"
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#include "../lib/dbnode.h"
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#include "../lib/dbftn.h"
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#include "../lib/mberrors.h"
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#include "config.h"
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#include "answer.h"
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#include "call.h"
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#include "lutil.h"
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#include "mbcico.h"
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#include "session.h"
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#define IEMSI 1
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int master = 0;
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int immediatecall = FALSE;
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char *forcedphone = NULL;
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char *forcedline = NULL;
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char *inetaddr = NULL;
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char *protocol = NULL;
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char *envptr = NULL;
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time_t t_start;
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time_t t_end;
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time_t c_start;
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time_t c_end;
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int online = 0;
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unsigned long sentbytes = 0;
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unsigned long rcvdbytes = 0;
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int tcp_mode = TCPMODE_NONE;
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int Loaded = FALSE;
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int telnet = FALSE;
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extern char *myname;
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char *inbound;
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char *tempinbound = NULL;
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char *uxoutbound;
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char *name;
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char *phone;
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char *flags;
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extern int gotfiles;
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extern int mypid;
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void usage(void)
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{
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fprintf(stderr,"ifcico; (c) Eugene G. Crosser, 1993-1997\n");
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fprintf(stderr,"mbcico ver. %s; (c) %s\n\n", VERSION, SHORTRIGHT);
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fprintf(stderr,"mbcico [-a inetaddr[:port]] [-n phone] [-l tty] [-t ibn|-t ifc] node\n");
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fprintf(stderr,"node should be in domain form, e.g. f11.n22.z3\n");
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fprintf(stderr," (this implies master mode)\n");
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fprintf(stderr," or:\n");
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fprintf(stderr,"mbcico tsync|yoohoo|**EMSI_INQC816|-t ibn|-t ifc\n");
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fprintf(stderr," (this implies slave mode)\n");
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}
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void free_mem(void)
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{
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free(inbound);
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if (name)
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free(name);
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if (phone)
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free(phone);
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if (flags)
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free(flags);
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if (uxoutbound)
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free(uxoutbound);
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if (protocol)
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free(protocol);
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if ((nlent) && (nlent->url))
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free(nlent->url);
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}
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void die(int onsig)
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{
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int total = 0;
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signal(onsig, SIG_IGN);
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if (onsig) {
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if (onsig <= NSIG)
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WriteError("Terminated on signal %d (%s)", onsig, SigName[onsig]);
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else
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Syslog('+', "Terminated with error %d", onsig);
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}
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if (sentbytes || rcvdbytes) {
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total = (int)(c_end - c_start -2);
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if (total < 1)
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total = 1;
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Syslog('+', "Sent %lu bytes, received %lu bytes, avg %d cps", sentbytes, rcvdbytes, (sentbytes + rcvdbytes) / total);
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}
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if (online)
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Syslog('+', "Connected %s", str_time(online));
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if (gotfiles)
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CreateSema((char *)"mailin");
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/*
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* Free memory
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*/
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free_mem();
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deinitnl();
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t_end = time(NULL);
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Syslog(' ', "MBCICO finished in %s", t_elapsed(t_start, t_end));
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if (envptr)
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free(envptr);
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ExitClient(onsig);
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}
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int main(int argc, char *argv[])
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{
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faddr *addr = NULL;
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int i, c, uid, rc, maxrc;
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char *answermode = NULL, *p = NULL, *cmd = NULL;
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struct passwd *pw;
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FILE *fp;
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#ifdef IEMSI
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char temp[PATH_MAX];
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#endif
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/*
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* The next trick is to supply a fake environment variable
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* MBSE_ROOT in case we are started from inetd or mgetty,
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* this will setup the variable so InitConfig() will work.
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* The /etc/passwd must point to the correct homedirectory.
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*/
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pw = getpwuid(getuid());
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if (getenv("MBSE_ROOT") == NULL) {
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envptr = xstrcpy((char *)"MBSE_ROOT=");
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envptr = xstrcat(envptr, pw->pw_dir);
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putenv(envptr);
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}
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if (argc < 2) {
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usage();
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if (envptr)
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free(envptr);
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exit(MBERR_COMMANDLINE);
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}
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InitConfig();
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InitNode();
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InitFidonet();
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TermInit(1);
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t_start = c_start = c_end = time(NULL);
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InitClient(pw->pw_name, (char *)"mbcico", CFG.location, CFG.logfile,
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CFG.cico_loglevel, CFG.error_log, CFG.mgrlog, CFG.debuglog);
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Syslog(' ', " ");
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Syslog(' ', "MBCICO v%s", VERSION);
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/*
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* Catch all signals we can, and ignore the rest.
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*/
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for (i = 0; i < NSIG; i++) {
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if ((i == SIGINT) || (i == SIGBUS) || (i == SIGILL) || (i == SIGSEGV) || (i == SIGTERM)) {
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signal(i, (void (*))die);
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} else if ((i != SIGKILL) && (i != SIGSTOP)) {
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signal(i, SIG_IGN);
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}
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}
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/*
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* Check if history file exists, if not create a new one.
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*/
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cmd = calloc(PATH_MAX, sizeof(char));
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sprintf(cmd, "%s/var/mailer.hist", getenv("MBSE_ROOT"));
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if ((fp = fopen(cmd, "r")) == NULL) {
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if ((fp = fopen(cmd, "a")) == NULL) {
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WriteError("$Can't create %s", cmd);
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} else {
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memset(&history, 0, sizeof(history));
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history.online = time(NULL);
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history.offline = time(NULL);
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fwrite(&history, sizeof(history), 1, fp);
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fclose(fp);
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Syslog('+', "Created new %s", cmd);
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}
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} else {
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fclose(fp);
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}
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free(cmd);
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memset(&history, 0, sizeof(history));
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cmd = xstrcpy((char *)"Cmd: mbcico");
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for (i = 1; i < argc; i++) {
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cmd = xstrcat(cmd, (char *)" ");
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cmd = xstrcat(cmd, argv[i]);
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}
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Syslog(' ', cmd);
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free(cmd);
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setmyname(argv[0]);
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while ((c = getopt(argc,argv,"r:n:l:t:a:I:h")) != -1) {
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switch (c) {
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case 'r': WriteError("commandline option -r is obsolete");
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break;
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case 'l': forcedline = optarg;
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break;
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case 't': p = xstrcpy(optarg);
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if (strncmp(p, "ifc", 3) == 0) {
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tcp_mode = TCPMODE_IFC;
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protocol = xstrcpy((char *)"fido");
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} else if (strncmp(p, "ibn", 3) == 0) {
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tcp_mode = TCPMODE_IBN;
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protocol = xstrcpy((char *)"binkp");
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} else if (strncmp(p, "itn", 3) == 0) {
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tcp_mode = TCPMODE_ITN;
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protocol = xstrcpy((char *)"telnet");
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telnet = TRUE;
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} else {
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usage();
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die(MBERR_COMMANDLINE);
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}
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free(p);
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RegTCP();
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break;
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case 'a': inetaddr = optarg;
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break;
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case 'n': forcedphone = optarg;
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break;
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default: usage();
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die(MBERR_COMMANDLINE);
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}
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}
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/*
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* Load rest of the configuration
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*/
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inbound = xstrcpy(CFG.inbound);
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uxoutbound = xstrcpy(CFG.uxpath);
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name = xstrcpy(CFG.bbs_name);
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phone = xstrcpy(CFG.Phone);
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flags = xstrcpy(CFG.Flags);
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while (argv[optind]) {
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for (p = argv[optind]; (*p) && (*p == '*'); p++);
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#ifdef IEMSI
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if (strncasecmp(p, "EMSI_NAKEEC3", 12) == 0) {
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Syslog('+', "Detected IEMSI client, starting mblogin");
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sprintf(temp, "%s/bin/mblogin", getenv("MBSE_ROOT"));
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socket_shutdown(mypid);
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if (execl(temp, "mblogin", (char *)NULL) == -1)
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perror("FATAL: Error loading BBS!");
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InitClient(pw->pw_name, (char *)"mbcico", CFG.location, CFG.logfile,
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CFG.cico_loglevel, CFG.error_log, CFG.mgrlog, CFG.debuglog);
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/*
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* If this happens, nothing is logged!
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*/
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printf("\n\nFATAL: Loading of the BBS failed!\n\n");
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sleep(3);
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free_mem();
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if (envptr)
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free(envptr);
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exit(MBERR_EXEC_FAILED);
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}
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#endif
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if ((strcasecmp(argv[optind],"tsync") == 0) ||
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(strcasecmp(argv[optind],"yoohoo") == 0) ||
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(strcasecmp(argv[optind],"ibn") == 0) ||
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(strncasecmp(p,"EMSI_",5) == 0)) {
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master = 0;
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answermode = argv[optind];
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} else {
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if ((addr = parsefaddr(argv[optind]))) {
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immediatecall = TRUE;
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master = 1;
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} else {
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WriteError("Unrecognizable address \"%s\"", argv[optind]);
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}
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}
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optind++;
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}
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/*
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The following witchkraft about uid-s is necessary to make
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access() work right. Unforunately, access() checks the real
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uid, if mbcico is invoked with supervisor real uid (as when
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called by uugetty) it returns X_OK for the magic files that
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even do not have `x' bit set. Therefore, `reference' magic
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file requests are taken for `execute' requests (and the
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actual execution natually fails). Here we set real uid equal
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to effective. If real uid is not zero, all these fails, but
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in this case it is not necessary anyway.
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*/
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uid=geteuid();
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seteuid(0);
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setuid(uid);
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seteuid(uid);
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umask(066); /* packets may contain confidential information */
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maxrc=0;
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if (master) {
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/*
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* Don't do outbound calls if low diskspace
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*/
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if (!diskfree(CFG.freespace))
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die(MBERR_DISK_FULL);
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if (addr == NULL) {
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WriteError("Calling mbcico without node address not supported anymore");
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die(MBERR_COMMANDLINE);
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}
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rc = call(addr);
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Syslog('+', "Call to %s %s (rc=%d)", ascfnode(addr, 0x1f), rc?"failed":"successful", rc);
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if (rc > maxrc)
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maxrc=rc;
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} else {
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/*
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* Slave (answer) mode
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*/
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#ifdef USE_EXPERIMENT
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if (telnet) {
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Syslog('-', "Will use experimental telnet code");
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}
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#else
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if (telnet) {
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WriteError("Answering calls with the \"-t itn\" option no longer supported");
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WriteError("Install mbtelind to answer incoming telnet calls");
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die(MBERR_COMMANDLINE);
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}
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#endif
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if (!answermode && tcp_mode == TCPMODE_IBN)
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answermode = xstrcpy((char *)"ibn");
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rc = maxrc = answer(answermode);
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Syslog('+', "Incoming call %s (rc=%d)", rc?"failed":"successful", rc);
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}
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tidy_faddr(addr);
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if (maxrc)
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die(maxrc);
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else
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die(MBERR_OK);
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return 0;
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}
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