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'aliases' for interfaces. A packet with destination on eth0 may enter at

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eth1.
This commit is contained in:
Arnout Engelen
2004-09-10 10:46:31 +00:00
parent 69423478b7
commit 9d19d7fd49
3 changed files with 20 additions and 5 deletions
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1
hashtbl.cpp
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@@ -14,7 +14,6 @@ HashNode::~HashNode ()
HashTable::HashTable(int n_size) HashTable::HashTable(int n_size)
{ {
// TODO allow for variable size
size = n_size; size = n_size;
table = (HashNode **) malloc (size * sizeof(HashNode *)); table = (HashNode **) malloc (size * sizeof(HashNode *));
for (unsigned int i=0; i<size; i++) for (unsigned int i=0; i<size; i++)

8
nethogs.h
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@@ -6,6 +6,8 @@
#include <sys/socket.h> #include <sys/socket.h>
#include <arpa/inet.h> #include <arpa/inet.h>
#include <assert.h> #include <assert.h>
#include <string.h>
#include <malloc.h>
#include <iostream> #include <iostream>
#define _BSD_SOURCE 1 #define _BSD_SOURCE 1
@@ -43,6 +45,8 @@ public:
addr = m_addr; addr = m_addr;
next = m_next; next = m_next;
sa_family = AF_INET; sa_family = AF_INET;
string = (char*) malloc (16);
inet_ntop (AF_INET, &m_addr, string, 15);
} }
/* this constructor takes an char address[33] */ /* this constructor takes an char address[33] */
local_addr (char m_address [33], local_addr * m_next = NULL) local_addr (char m_address [33], local_addr * m_next = NULL)
@@ -73,6 +77,7 @@ public:
address[35] = m_address[28]; address[36] = m_address[29]; address[35] = m_address[28]; address[36] = m_address[29];
address[37] = m_address[30]; address[38] = m_address[31]; address[37] = m_address[30]; address[38] = m_address[31];
address[39] = 0; address[39] = 0;
string = strdup(address);
if (DEBUG) if (DEBUG)
std::cout << "Converting address " << address << std::endl; std::cout << "Converting address " << address << std::endl;
@@ -85,11 +90,12 @@ public:
bool contains (const in_addr_t & n_addr); bool contains (const in_addr_t & n_addr);
bool contains (const struct in6_addr & n_addr); bool contains (const struct in6_addr & n_addr);
char * string;
local_addr * next;
private: private:
in_addr_t addr; in_addr_t addr;
struct in6_addr addr6; struct in6_addr addr6;
local_addr * next;
short int sa_family; short int sa_family;
}; };

16
process.cpp
View File

@@ -17,6 +17,7 @@
extern timeval curtime; extern timeval curtime;
extern std::string * caption; extern std::string * caption;
extern local_addr * local_addrs;
static int INET6_getsock(char *bufp, struct sockaddr *sap) static int INET6_getsock(char *bufp, struct sockaddr *sap)
{ {
@@ -89,7 +90,6 @@ void addtoconninode (char * buffer)
// the following line leaks memory. // the following line leaks memory.
unsigned long * inode = (unsigned long *) malloc (sizeof(unsigned long)); unsigned long * inode = (unsigned long *) malloc (sizeof(unsigned long));
// TODO check it matched // 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", 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); local_addr, &local_port, rem_addr, &rem_port, inode);
@@ -142,14 +142,24 @@ void addtoconninode (char * buffer)
snprintf(hashkey, HASHKEYSIZE * sizeof(char), "%s:%d-%s:%d", local_string, local_port, remote_string, rem_port); snprintf(hashkey, HASHKEYSIZE * sizeof(char), "%s:%d-%s:%d", local_string, local_port, remote_string, rem_port);
free (local_string); free (local_string);
free (remote_string);
//if (DEBUG) //if (DEBUG)
// fprintf (stderr, "Hashkey: %s\n", hashkey); // fprintf (stderr, "Hashkey: %s\n", hashkey);
conninode->add(hashkey, (void *)inode); conninode->add(hashkey, (void *)inode);
// TODO maybe also add this inode for our other local addresses with that destination /* workaround: sometimes, when a connection is actually from 172.16.3.1 to
* 172.16.3.3, packages arrive from 195.169.216.157 to 172.16.3.3, where
* 172.16.3.1 and 195.169.216.157 are the local addresses of different
* interfaces */
struct local_addr * current_local_addr = local_addrs;
while (current_local_addr != NULL) {
hashkey = (char *) malloc (HASHKEYSIZE * sizeof(char));
snprintf(hashkey, HASHKEYSIZE * sizeof(char), "%s:%d-%s:%d", current_local_addr->string, local_port, remote_string, rem_port);
conninode->add(hashkey, (void *)inode);
current_local_addr = current_local_addr->next;
}
free (remote_string);
} }
void refreshconninode () void refreshconninode ()