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hook connect and getpeername

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This commit is contained in:
hugoc
2024-01-16 16:00:30 +01:00
Unverified
parent 95036aac7b
commit 23c9654cf8
3 changed files with 168 additions and 6 deletions
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src/core.c
+50 -2
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@@ -1655,7 +1655,12 @@ int add_node_to_chain(proxy_data * pd, udp_relay_chain * chain){
return -1;
}
int free_relay_chain_nodes(udp_relay_chain chain){
int free_relay_chain(udp_relay_chain chain){
if(NULL != chain.connected_peer_addr){
free(chain.connected_peer_addr);
chain.connected_peer_addr = NULL;
}
if(chain.head == NULL){
return SUCCESS;
}
@@ -1687,6 +1692,8 @@ udp_relay_chain * open_relay_chain(proxy_data *pd, unsigned int proxy_count, cha
new_chain->head = NULL;
new_chain->sockfd = -1;
new_chain->connected_peer_addr = NULL;
new_chain->connected_peer_addr_len = -1;
unsigned int alive_count = 0;
@@ -1730,12 +1737,53 @@ udp_relay_chain * open_relay_chain(proxy_data *pd, unsigned int proxy_count, cha
error:
PDEBUG("error\n");
release_all(pd, proxy_count);
free_relay_chain_nodes(*new_chain);
free_relay_chain(*new_chain);
free(new_chain);
errno = ETIMEDOUT;
return NULL;
}
// Checks the address family of addr, allocates a matching structure and keeps a pointer to it in the chain structure to store the address of the connected peer
void set_connected_peer_addr(udp_relay_chain* chain, struct sockaddr* addr, socklen_t addrlen){
sa_family_t fam = ((struct sockaddr_in*)addr)->sin_family;
int v6 = fam == AF_INET6;
if(v6){
struct sockaddr_in6* old_addr6 = (struct sockaddr_in6*)addr;
struct sockaddr_in6* new_addr6 = NULL;
if(NULL == (new_addr6 = (struct sockaddr_in6*)malloc(sizeof(struct sockaddr_in6)))){
PDEBUG("error malloc\n");
return -1;
}
new_addr6->sin6_family = old_addr6->sin6_family;
new_addr6->sin6_port = old_addr6->sin6_port;
memcpy(new_addr6->sin6_addr.s6_addr, old_addr6->sin6_addr.s6_addr, 16);
chain->connected_peer_addr = (struct sockaddr*)new_addr6;
chain->connected_peer_addr_len = sizeof(struct sockaddr_in6);
} else{
struct sockaddr_in* old_addr = (struct sockaddr_in*)addr;
struct sockaddr_in* new_addr = NULL;
if(NULL == (new_addr = (struct sockaddr_in*)malloc(sizeof(struct sockaddr_in)))){
PDEBUG("error malloc\n");
return -1;
}
new_addr->sin_family = old_addr->sin_family;
new_addr->sin_port = old_addr->sin_port;
new_addr->sin_addr.s_addr = old_addr->sin_addr.s_addr;
chain->connected_peer_addr = (struct sockaddr*)new_addr;
chain->connected_peer_addr_len = sizeof(struct sockaddr_in);
}
}
void add_relay_chain(udp_relay_chain_list* chains_list, udp_relay_chain* new_chain){