543 lines
11 KiB
C
543 lines
11 KiB
C
/*****************************************************************************
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*
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* $Id$
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* Purpose ...............: Client/Server communications
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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 "mbselib.h"
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int do_quiet = FALSE; /* Quiet flag */
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int show_log = FALSE; /* Show loglines on screen */
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int most_debug = FALSE; /* Toggle normal/most debugging */
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int tcp_regged = FALSE; /* Safety TCP registration flag */
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char progname[21]; /* Program name */
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char logdebug[PATH_MAX]; /* Debug logfile */
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char logfile[PATH_MAX]; /* Normal logfile */
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char errfile[PATH_MAX]; /* Error logfile */
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char mgrfile[PATH_MAX]; /* Area/File- mgr logfile */
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long loggrade; /* Logging grade */
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pid_t mypid; /* Original parent pid if child */
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unsigned long lcrc = 0, tcrc = 1; /* CRC value of logstring */
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int lcnt = 0; /* Same message counter */
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static char *pbuff = NULL;
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extern char cpath[108];
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extern char spath[108];
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char *xmalloc(size_t size)
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{
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char *tmp;
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tmp = malloc(size);
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if (!tmp)
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abort();
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return tmp;
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}
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char *xstrcpy(char *src)
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{
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char *tmp;
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if (src == NULL)
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return(NULL);
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tmp = xmalloc(strlen(src)+1);
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strcpy(tmp, src);
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return tmp;
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}
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char *xstrcat(char *src, char *add)
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{
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char *tmp;
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size_t size = 0;
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if ((add == NULL) || (strlen(add) == 0))
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return src;
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if (src)
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size = strlen(src);
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size += strlen(add);
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tmp = xmalloc(size + 1);
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*tmp = '\0';
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if (src) {
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strcpy(tmp, src);
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free(src);
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}
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strcat(tmp, add);
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return tmp;
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}
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void InitClient(char *user, char *myname, char *where, char *logfname, long loggr, char *err, char *mgr, char *debug)
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{
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if ((getenv("MBSE_ROOT")) == NULL) {
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printf("Could not get the MBSE_ROOT environment variable\n");
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printf("Please set the environment variable ie:\n");
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printf("\"MBSE_ROOT=/opt/mbse; export MBSE_ROOT\"\n\n");
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exit(MBERR_INIT_ERROR);
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}
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sprintf(progname, "%s", myname);
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sprintf(logfile, "%s", logfname);
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sprintf(errfile, "%s", err);
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sprintf(mgrfile, "%s", mgr);
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sprintf(logdebug, "%s", debug);
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loggrade = loggr;
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sprintf(cpath, "%s/tmp/%s%d", getenv("MBSE_ROOT"), progname, getpid());
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sprintf(spath, "%s/tmp/mbtask", getenv("MBSE_ROOT"));
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/*
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* Store my pid in case a child process is forked and wants to do
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* some communications with the mbsed server.
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*/
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mypid = getpid();
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if (socket_connect(user, myname, where) == -1) {
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printf("PANIC: cannot access socket\n");
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exit(MBERR_INIT_ERROR);
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}
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}
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void ExitClient(int errcode)
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{
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if (socket_shutdown(mypid) == -1)
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printf("PANIC: unable to shutdown socket\n");
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unlink(cpath);
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fflush(stdout);
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fflush(stdin);
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if (pbuff)
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free(pbuff);
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exit(errcode);
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}
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void SockS(const char *format, ...)
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{
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char *out;
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va_list va_ptr;
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out = calloc(SS_BUFSIZE, sizeof(char));
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va_start(va_ptr, format);
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vsprintf(out, format, va_ptr);
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va_end(va_ptr);
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if (socket_send(out) == 0)
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socket_receive();
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free(out);
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}
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char *SockR(const char *format, ...)
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{
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static char buf[SS_BUFSIZE];
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char *out;
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va_list va_ptr;
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memset(&buf, 0, SS_BUFSIZE);
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out = calloc(SS_BUFSIZE, sizeof(char));
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va_start(va_ptr, format);
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vsprintf(out, format, va_ptr);
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va_end(va_ptr);
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if (socket_send(out) == 0)
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sprintf(buf, "%s", socket_receive());
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free(out);
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return buf;
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}
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void WriteError(const char *format, ...)
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{
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char *outputstr;
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va_list va_ptr;
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int i;
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outputstr = calloc(10240, sizeof(char));
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va_start(va_ptr, format);
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vsprintf(outputstr, format, va_ptr);
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va_end(va_ptr);
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for (i = 0; i < strlen(outputstr); i++)
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if (outputstr[i] == '\r' || outputstr[i] == '\n')
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outputstr[i] = ' ';
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if (*outputstr == '$')
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sprintf(outputstr+strlen(outputstr), ": %s", strerror(errno));
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if (strlen(outputstr) > (SS_BUFSIZE - 64)) {
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outputstr[SS_BUFSIZE - 65] = ';';
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outputstr[SS_BUFSIZE - 64] = '\0';
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}
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tcrc = StringCRC32(outputstr);
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if (tcrc == lcrc) {
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lcnt++;
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free(outputstr);
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return;
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} else {
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lcrc = tcrc;
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if (lcnt) {
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lcnt++;
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SockS("ALOG:5,%s,%s,%d,?,Last message repeated %d times;", logdebug, progname, mypid, lcnt);
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SockS("ALOG:5,%s,%s,%d,?,Last message repeated %d times;", logfile, progname, mypid, lcnt);
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SockS("ALOG:5,%s,%s,%d,?,Last message repeated %d times;", errfile, progname, mypid, lcnt);
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}
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lcnt = 0;
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}
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SockS("ALOG:5,%s,%s,%d,?,%s;", logdebug, progname, mypid, *outputstr == '$' ? outputstr+1 : outputstr);
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SockS("ALOG:5,%s,%s,%d,?,%s;", logfile, progname, mypid, *outputstr == '$' ? outputstr+1 : outputstr);
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SockS("ALOG:5,%s,%s,%d,?,%s;", errfile, progname, mypid, *outputstr == '$' ? outputstr+1 : outputstr);
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free(outputstr);
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}
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/*
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* Standard system logging
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*/
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void Syslog(int level, const char *format, ...)
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{
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char *outstr;
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va_list va_ptr;
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outstr = calloc(10240, sizeof(char));
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va_start(va_ptr, format);
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vsprintf(outstr, format, va_ptr);
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va_end(va_ptr);
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Syslogp(level, outstr);
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free(outstr);
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}
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/*
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* System logging without string formatting.
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*/
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void Syslogp(int level, char *outstr)
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{
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long mask = 0;
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int i, upper, debug;
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debug = isalpha(level);
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upper = isupper(level);
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switch(tolower(level)) {
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case ' ' : mask = DLOG_ALLWAYS; break;
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case '?' : mask = DLOG_ERROR; break;
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case '!' : mask = DLOG_ATTENT; break;
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case '+' : mask = DLOG_NORMAL; break;
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case '-' : mask = DLOG_VERBOSE; break;
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case 'a' : mask = DLOG_TCP; break;
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case 'b' : mask = DLOG_BBS; break;
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case 'c' : mask = DLOG_CHAT; break;
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case 'd' : mask = DLOG_DEVIO; break;
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case 'e' : mask = DLOG_EXEC; break;
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case 'f' : mask = DLOG_FILEFWD; break;
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case 'h' : mask = DLOG_HYDRA; break;
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case 'i' : mask = DLOG_IEMSI; break;
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case 'l' : mask = DLOG_LOCK; break;
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case 'm' : mask = DLOG_MAIL; break;
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case 'n' : mask = DLOG_NODELIST; break;
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case 'o' : mask = DLOG_OUTSCAN; break;
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case 'p' : mask = DLOG_PACK; break;
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case 'r' : mask = DLOG_ROUTE; break;
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case 's' : mask = DLOG_SESSION; break;
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case 't' : mask = DLOG_TTY; break;
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case 'x' : mask = DLOG_XMODEM; break;
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case 'z' : mask = DLOG_ZMODEM; break;
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}
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if (((loggrade | DLOG_ALLWAYS | DLOG_ERROR) & mask) == 0)
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return;
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/*
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* Don't log uppercase debug levels when most_debug is FALSE
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*/
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if (upper && !most_debug)
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return;
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for (i = 0; i < strlen(outstr); i++)
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if (outstr[i] == '\r' || outstr[i] == '\n')
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outstr[i] = ' ';
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if (strlen(outstr) > (SS_BUFSIZE - 64))
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outstr[SS_BUFSIZE - 64] = '\0';
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tcrc = StringCRC32(outstr);
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if (tcrc == lcrc) {
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lcnt++;
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return;
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} else {
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lcrc = tcrc;
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if (lcnt) {
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lcnt++;
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SockS("ALOG:5,%s,%s,%d,%c,Last message repeated %d times;", logdebug, progname, mypid, level, lcnt);
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if (!debug)
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SockS("ALOG:5,%s,%s,%d,%c,Last message repeated %d times;", logfile, progname, mypid, level, lcnt);
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}
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lcnt = 0;
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}
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if (show_log)
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printf("%c %s\n", level, outstr);
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if (*outstr == '$') {
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SockS("ALOG:5,%s,%s,%d,%c,%s: %s;", logdebug, progname, mypid, level, outstr+1, strerror(errno));
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if (!debug)
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SockS("ALOG:5,%s,%s,%d,%c,%s: %s;", logfile, progname, mypid, level, outstr+1, strerror(errno));
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} else {
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SockS("ALOG:5,%s,%s,%d,%c,%s;", logdebug, progname, mypid, level, outstr);
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if (!debug)
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SockS("ALOG:5,%s,%s,%d,%c,%s;", logfile, progname, mypid, level, outstr);
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}
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}
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void Mgrlog(const char *format, ...)
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{
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char *outstr;
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va_list va_ptr;
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int i;
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outstr = calloc(10240, sizeof(char));
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va_start(va_ptr, format);
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vsprintf(outstr, format, va_ptr);
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va_end(va_ptr);
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for (i = 0; i < strlen(outstr); i++)
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if (outstr[i] == '\r' || outstr[i] == '\n')
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outstr[i] = ' ';
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if (strlen(outstr) > (SS_BUFSIZE - 64))
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outstr[SS_BUFSIZE - 64] = '\0';
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SockS("ALOG:5,%s,%s,%d,+,%s;", mgrfile, progname, mypid, outstr);
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Syslogp('+', outstr);
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free(outstr);
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}
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void IsDoing(const char *format, ...)
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{
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char *outputstr;
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va_list va_ptr;
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outputstr = calloc(SS_BUFSIZE, sizeof(char));
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va_start(va_ptr, format);
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vsprintf(outputstr, format, va_ptr);
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va_end(va_ptr);
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SockS("ADOI:2,%d,%s;", mypid, outputstr);
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free(outputstr);
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}
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void RegTCP(void)
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{
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if (!tcp_regged)
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SockS("ATCP:1,%d;", mypid);
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tcp_regged = TRUE;
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}
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void SetTTY(char *tty)
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{
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SockS("ATTY:2,%d,%s;", mypid, tty);
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}
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void UserCity(pid_t pid, char *user, char *city)
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{
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SockS("AUSR:3,%d,%s,%s;", pid, user, city);
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}
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void DoNop()
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{
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SockS("GNOP:1,%d;", mypid);
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}
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static time_t nop = 0;
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/*
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* This function can be called very often but will only send once a minute
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* a NOP to the server. This is a simple solution to keep server trafic low.
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*/
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void Nopper(void)
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{
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time_t now;
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now = time(NULL);
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if (((time_t)now - (time_t)nop) > 60) {
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nop = now;
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SockS("GNOP:1,%d;", mypid);
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}
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}
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/*
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* Set new alarmtime for Client/Server connection,
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* if zero set the default time.
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*/
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void Altime(int altime)
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{
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if (altime)
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SockS("ATIM:2,%d,%d;", mypid, altime);
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else
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SockS("ADEF:1,%d;", mypid);
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}
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unsigned long sequencer()
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{
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char *buf, *res;
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unsigned long seq = 0;
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buf = calloc(SS_BUFSIZE, sizeof(char));
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sprintf(buf, "SSEQ:0;");
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if (socket_send(buf) == 0) {
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free(buf);
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buf = socket_receive();
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res = strtok(buf, ",");
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res = strtok(NULL, ";");
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seq = atol(res);
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}
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return seq;
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}
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/*
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* Check enough diskspace.
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* return 0=No, 1=Yes, 2=Unknown, 3=Error
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*/
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int enoughspace(unsigned long needed)
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{
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char *buf, *res;
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int rc = 3;
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buf = calloc(SS_BUFSIZE, sizeof(char));
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sprintf(buf, "DSPC:1,%ld;", needed);
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if (socket_send(buf) == 0) {
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free(buf);
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buf = socket_receive();
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res = strtok(buf, ",");
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res = strtok(NULL, ";");
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rc = atoi(res);
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}
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return rc;
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}
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char *printable(char *s, int l)
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{
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int len;
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char *p;
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if (pbuff)
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free(pbuff);
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pbuff=NULL;
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if (s == NULL)
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return (char *)"(null)";
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if (l > 0)
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len=l;
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else if (l == 0)
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len=strlen(s);
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else {
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len=strlen(s);
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if (len > -l)
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len=-l;
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}
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pbuff=(char*)xmalloc(len*3+1);
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p=pbuff;
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while (len--) {
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if (isprint(*(unsigned char*)s))
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*p++=*s;
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else
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switch (*s) {
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case '\\': *p++='\\'; *p++='\\'; break;
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case '\r': *p++='\\'; *p++='r'; break;
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case '\n': *p++='\\'; *p++='n'; break;
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case '\t': *p++='\\'; *p++='t'; break;
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case '\b': *p++='\\'; *p++='b'; break;
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default: sprintf(p,"\\%02x", (*s & 0xff)); p+=3; break;
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}
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s++;
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}
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*p='\0';
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return pbuff;
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}
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char *printablec(char c)
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{
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return printable(&c,1);
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}
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