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/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
* (BSD License, from kdelibs/doc/common/bsd-license.html)
*/
/* debug print routines */
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <syslog.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <config.h>
#ifdef HAVE_PATHS_H
#include <paths.h>
#endif
#include <errno.h>
#include "prot_talkd.h"
#include "proto.h"
#ifndef _PATH_VAR_LOG
#define _PATH_VAR_LOG "/var/log/"
#endif
#define NTYPES 4
static const char *types[NTYPES] = {
"LEAVE_INVITE",
"LOOK_UP",
"DELETE",
"ANNOUNCE"
};
#define NANSWERS 9
static const char *answers[NANSWERS] = {
"SUCCESS",
"NOT_HERE",
"FAILED",
"MACHINE_UNKNOWN",
"PERMISSION_DENIED",
"UNKNOWN_REQUEST",
"BADVERSION",
"BADADDR",
"BADCTLADDR"
};
static int logging, badpackets;
static int logfd, packfd;
void
set_debug(int l, int b)
{
const char *file;
logging = l;
badpackets = b;
if (logging) {
file = _PATH_VAR_LOG "talkd.log";
logfd = open(file, O_WRONLY|O_APPEND);
if (logfd<0) {
syslog(LOG_WARNING, "%s: %s", file, strerror(errno));
logging = 0;
}
}
if (badpackets) {
file = _PATH_VAR_LOG "talkd.packets";
packfd = open(file, O_WRONLY|O_APPEND);
if (packfd<0) {
syslog(LOG_WARNING, "%s: %s", file, strerror(errno));
badpackets = 0;
}
}
}
/****************** ktalkd addition ************/
/* print_addr is a debug print routine for sockaddr_in structures.
* Call with a structure in network byte order.
* @param cp a string to identify the log output
* @param addr the address to read
* This code is obviously NOT IPv6 ready :)
*/
static void print_addr(const char *cp, struct sockaddr_in * addr)
{
int a0,a1,a2,a3;
unsigned int s_add = addr->sin_addr.s_addr;
char buf[1024];
a0 = s_add % 256L;
s_add /= 256L;
a1 = s_add % 256L;
s_add /= 256L;
a2 = s_add % 256L;
s_add /= 256L;
a3 = s_add % 256L;
snprintf(buf, sizeof(buf), "%s: addr = %d.%d.%d.%d port = %o, family = %o",
cp, a0, a1, a2, a3, ntohs(addr->sin_port), ntohs(addr->sin_family));
write(logfd, buf, strlen(buf));
}
/**********************************************/
static const char *
print_type(int type)
{
static char rv[80];
if (type > NTYPES) {
snprintf(rv, sizeof(rv), "type %d", type);
return rv;
}
return types[type];
}
static const char *
print_answer(int answer)
{
static char rv[80];
if (answer > NANSWERS) {
snprintf(rv, sizeof(rv), "answer %d", answer);
return rv;
}
return answers[answer];
}
void
print_request(const char *cp, const CTL_MSG *mp)
{
char lu[NAME_SIZE+1], ru[NAME_SIZE+1], tt[TTY_SIZE+1];
char buf[1024];
const char *tp;
if (!logging) return;
tp = print_type(mp->type);
strncpy(lu, mp->l_name, sizeof(lu));
strncpy(ru, mp->r_name, sizeof(ru));
strncpy(tt, mp->r_tty, sizeof(tt));
lu[sizeof(lu)-1]=0;
ru[sizeof(ru)-1]=0;
tt[sizeof(tt)-1]=0;
snprintf(buf, sizeof(buf),
"%s: %s: id %u, l_user %s, r_user %s, r_tty %s\n",
cp, tp, mp->id_num, lu, ru, tt);
write(logfd, buf, strlen(buf));
print_addr(" addr", (struct sockaddr_in *)&mp->addr);
print_addr(" ctl_addr", (struct sockaddr_in *)&mp->ctl_addr);
}
void
print_response(const char *cp, const CTL_RESPONSE *rp)
{
char buf[1024];
const char *tp, *ap;
if (!logging) return;
tp = print_type(rp->type);
ap = print_answer(rp->answer);
snprintf(buf, sizeof(buf),
"%s: %s <-- %s, id %d\n",
cp, tp, ap, ntohl(rp->id_num));
write(logfd, buf, strlen(buf));
if ((rp->type == LOOK_UP) && (rp->answer == SUCCESS))
print_addr(" resp addr", (struct sockaddr_in *)&rp->addr);
}
void
ktalk_debug(const char *format, ...)
{
char buf[1024];
va_list ap;
if (!logging) return;
va_start(ap, format);
vsnprintf(buf, sizeof(buf), format, ap);
va_end(ap);
write(logfd, buf, strlen(buf));
}
void
print_broken_packet(const char *pack, size_t len, struct sockaddr_in *from)
{
size_t i;
char tmp[4], buf[128];
if (!badpackets) return;
snprintf(buf, sizeof(buf), "From: %s [%u]",
inet_ntoa(from->sin_addr), from->sin_addr.s_addr);
write(packfd, buf, strlen(buf));
for (i=0; i<len; i++) {
if (i%24 == 0) write(packfd, "\n ", 5);
snprintf(tmp, sizeof(tmp), "%02x ", (unsigned char)pack[i]);
write(packfd, tmp, strlen(tmp));
}
write(packfd, "\n", 1);
}
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