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Much cleaner code for dissecting the packets.

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known issue: after a while, it seems to 'forget' a connection
belonged to a process and starts adding the traffic to the unknown
process.
This commit is contained in:
Arnout Engelen
2004-09-11 15:00:54 +00:00
parent 9d19d7fd49
commit 8cbf4f04cc
6 changed files with 121 additions and 24 deletions
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21
process.cpp
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@@ -91,9 +91,20 @@ void addtoconninode (char * buffer)
unsigned long * inode = (unsigned long *) malloc (sizeof(unsigned long));
// TODO check it matched
sscanf(buffer, "%*d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %*X %*lX:%*lX %*X:%*lX %*lX %*d %*d %ld %*512s\n",
int matches = sscanf(buffer, "%*d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %*X %*lX:%*lX %*X:%*lX %*lX %*d %*d %ld %*512s\n",
local_addr, &local_port, rem_addr, &rem_port, inode);
if (matches != 5) {
fprintf(stderr,"Unexpected buffer: '%s'\n",buffer);
exit(0);
}
/*if (*inode == 0) {
// This sometimes happens due to what I think is a bug in the
// kernel. See http://lkml.org/lkml/2004/9/10/193.
fprintf(stderr,"Inode zero: '%s'\n",buffer);
exit(0);
}*/
if (strlen(local_addr) > 8)
{
/* this is an IPv6-style row */
@@ -396,7 +407,9 @@ void do_refresh()
}
/* returns the process from proclist with matching pid
* if none, creates it */
* if the inode is not associated with any PID, return the unknown process
* if the process is not yet in the proclist, add it
*/
Process * getProcess (unsigned long inode, char * devicename)
{
struct prg_node * node = prg_cache_get(inode);
@@ -409,7 +422,7 @@ Process * getProcess (unsigned long inode, char * devicename)
if (node == NULL)
{
if (DEBUG)
std::cerr << "Unknown inode " << inode << ", assuming unknown." << endl;
std::cerr << "inode " << inode << " STILL not in inode-to-program-mapping." << endl;
return unknownproc;
}
}
@@ -477,7 +490,7 @@ Process * getProcess (Connection * connection, char * devicename)
{
delete reversepacket;
if (DEBUG)
std::cerr << connection->refpacket->gethashstring() << " STILL not in table - adding to the unknown process\n";
std::cerr << connection->refpacket->gethashstring() << " STILL not in connection-to-inode table - adding to the unknown process\n";
unknownproc->connections = new ConnList (connection, unknownproc->connections);
return unknownproc;
}