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deb-mbse/mbcico/mbcico.c

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