/* Zlib test */
int main(int argc, char **argv)
{
unsigned long int ret, srcsize, dstsize = 2010;
char dst[2048];
char dst2[2048];
memset(dst, 0, 2048);
memset(dst2, 0, 2048);
if (argc < 2) {
printf("%s: string\n", argv[0]);
exit(1);
}
srcsize = strlen(argv[1]);
if (srcsize > 2000) {
printf("%s: string too large\n", argv[0]);
exit(1);
}
if ((ret = os_zlib_compress(argv[1], dst, srcsize, dstsize))) {
printf("Compressed, from %lu->%lu\n", srcsize, ret);
} else {
printf("FAILED compressing.\n");
exit(1);
}
/* Set new srcsize for decompression */
srcsize = ret;
if ((ret = os_zlib_uncompress(dst, dst2, srcsize, dstsize))) {
printf("Uncompressed ok. String: '%s', size %lu->%lu\n",
dst2, srcsize, ret);
} else {
printf("FAILED uncompressing.\n");
exit(1);
}
return (0);
}
/* ReadSecMSG v0.2: 2005/02/10 */
char *ReadSecMSG(keystore *keys, char *buffer, char *cleartext,
int id, unsigned int buffer_size)
{
unsigned int msg_global = 0;
unsigned int msg_local = 0;
char *f_msg;
if(*buffer == ':')
{
buffer++;
}
else
{
merror(ENCFORMAT_ERROR, __local_name, keys->keyentries[id]->ip->ip);
return(NULL);
}
/* Decrypting message */
if(!OS_BF_Str(buffer, cleartext, keys->keyentries[id]->key,
buffer_size, OS_DECRYPT))
{
merror(ENCKEY_ERROR, __local_name, keys->keyentries[id]->ip->ip);
return(NULL);
}
/* Compressed */
else if(cleartext[0] == '!')
{
cleartext[buffer_size] = '\0';
cleartext++;
buffer_size--;
/* Removing padding */
while(*cleartext == '!')
{
cleartext++;
buffer_size--;
}
/* Uncompressing */
if(!os_zlib_uncompress(cleartext, buffer, buffer_size, OS_MAXSTR))
{
merror(UNCOMPRESS_ERR, __local_name);
return(NULL);
}
/* Checking checksum */
f_msg = CheckSum(buffer);
if(f_msg == NULL)
{
merror(ENCSUM_ERROR, __local_name, keys->keyentries[id]->ip->ip);
return(NULL);
}
/* Removing random */
f_msg+=5;
/* Checking count -- protecting against replay attacks */
msg_global = (unsigned int) atoi(f_msg);
f_msg+=10;
/* Checking for the right message format */
if(*f_msg != ':')
{
merror(ENCFORMAT_ERROR, __local_name,keys->keyentries[id]->ip->ip);
return(NULL);
}
f_msg++;
msg_local = (unsigned int) atoi(f_msg);
f_msg+=5;
/* Returning the message if we don't need to verify the counbter. */
if(!_s_verify_counter)
{
/* Updating currently counts */
keys->keyentries[id]->global = msg_global;
keys->keyentries[id]->local = msg_local;
if(rcv_count >= _s_recv_flush)
{
StoreCounter(keys, id, msg_global, msg_local);
rcv_count = 0;
}
rcv_count++;
return(f_msg);
}
if((msg_global > keys->keyentries[id]->global)||
((msg_global == keys->keyentries[id]->global) &&
(msg_local > keys->keyentries[id]->local)))
{
/* Updating currently counts */
keys->keyentries[id]->global = msg_global;
keys->keyentries[id]->local = msg_local;
if(rcv_count >= _s_recv_flush)
{
StoreCounter(keys, id, msg_global, msg_local);
rcv_count = 0;
}
rcv_count++;
return(f_msg);
}
/* Checking if it is a duplicated message */
if(msg_global == keys->keyentries[id]->global)
{
return(NULL);
}
/* Warn about duplicated messages */
merror("%s: WARN: Duplicate error: global: %u, local: %u, "
"saved global: %u, saved local:%u",
__local_name,
msg_global,
msg_local,
keys->keyentries[id]->global,
keys->keyentries[id]->local);
merror(ENCTIME_ERROR, __local_name, keys->keyentries[id]->name);
return(NULL);
}
/* Old format */
else if(cleartext[0] == ':')
{
unsigned int msg_count;
unsigned int msg_time;
/* Closing string */
cleartext[buffer_size] = '\0';
/* Checking checksum */
cleartext++;
f_msg = CheckSum(cleartext);
if(f_msg == NULL)
{
merror(ENCSUM_ERROR, __local_name, keys->keyentries[id]->ip->ip);
return(NULL);
}
/* Checking time -- protecting against replay attacks */
msg_time = (unsigned int) atoi(f_msg);
f_msg+=11;
msg_count = (unsigned int) atoi(f_msg);
f_msg+=5;
/* Returning the message if we don't need to verify the counbter. */
if(!_s_verify_counter)
{
/* Updating currently counts */
keys->keyentries[id]->global = msg_time;
keys->keyentries[id]->local = msg_local;
f_msg = strchr(f_msg, ':');
if(f_msg)
{
f_msg++;
return(f_msg);
}
else
{
merror(ENCFORMAT_ERROR, __local_name,keys->keyentries[id]->ip->ip);
return (NULL);
}
}
if((msg_time > keys->keyentries[id]->global) ||
((msg_time == keys->keyentries[id]->global)&&
(msg_count > keys->keyentries[id]->local)))
{
/* Updating currently time and count */
keys->keyentries[id]->global = msg_time;
keys->keyentries[id]->local = msg_count;
f_msg = strchr(f_msg, ':');
if(f_msg)
{
f_msg++;
return(f_msg);
}
else
{
merror(ENCFORMAT_ERROR, __local_name,keys->keyentries[id]->ip->ip);
return (NULL);
}
}
/* Checking if it is a duplicated message */
if((msg_count == keys->keyentries[id]->local) &&
(msg_time == keys->keyentries[id]->global))
{
return(NULL);
}
/* Warn about duplicated message */
merror("%s: WARN: Duplicate error: msg_count: %u, time: %u, "
"saved count: %u, saved_time:%u",
__local_name,
msg_count,
msg_time,
keys->keyentries[id]->local,
keys->keyentries[id]->global);
merror(ENCTIME_ERROR, __local_name, keys->keyentries[id]->name);
return(NULL);
}
merror(ENCFORMAT_ERROR, __local_name, keys->keyentries[id]->ip->ip);
return(NULL);
}
