|
|
|---|
struct sockaddr_in *to = NULL; | struct sockaddr_in *to = NULL; |
char tmp[64]; | char tmp[64]; |
to = (struct sockaddr_in *) &(addr_pair->remote_addr); | to = (struct sockaddr_in *) &(addr_pair->remote_addr); |
|
/* Using strdup on the output of inet_ntoa is important! */ |
|
/* "inet_ntoa" uses a statically allocated buffer to store |
|
its information. To use two in a row, the first needs |
|
to be saved somewhere else so that the second does not |
|
overwrite it. However, it is important to remember that |
|
all "strdup" calls MUST be freed. */ |
if (to == NULL) { | if (to == NULL) { |
return strdup("UDP: unknown"); |
sprintf(tmp, "UDP: [%s]->unknown", |
|
inet_ntoa(addr_pair->local_addr)); |
|
} else { |
|
/* This will store the first address from strdup so that the second |
|
call will not overwrite it. */ |
|
char* local_addr_copy = strdup( inet_ntoa(addr_pair->local_addr) ); |
|
sprintf(tmp, "UDP: [%s]->[%s]:%hu", |
|
local_addr_copy, |
|
inet_ntoa(to->sin_addr), ntohs(to->sin_port)); |
|
/* Remember, we must free our copy now. */ |
|
free( local_addr_copy ); |
} | } |
| |
sprintf(tmp, "UDP: [%s]:%hu", |
|
inet_ntoa(to->sin_addr), ntohs(to->sin_port)); |
|
return strdup(tmp); | return strdup(tmp); |
} | } |
} | } |
|
|
|---|
NETSNMP_DS_LIB_CLIENT_ADDR); | NETSNMP_DS_LIB_CLIENT_ADDR); |
if (client_socket) { | if (client_socket) { |
struct sockaddr_in client_addr; | struct sockaddr_in client_addr; |
|
int ret; |
netsnmp_sockaddr_in2(&client_addr, client_socket, NULL); | netsnmp_sockaddr_in2(&client_addr, client_socket, NULL); |
|
addr_pair.local_addr = client_addr.sin_addr; |
client_addr.sin_port = 0; | client_addr.sin_port = 0; |
bind(t->sock, (struct sockaddr *)&client_addr, |
ret = bind(t->sock, (struct sockaddr *)&client_addr, |
sizeof(struct sockaddr)); | sizeof(struct sockaddr)); |
|
if(ret) |
|
DEBUGMSGTL(("netsnmp_udp", "failed to bind for clientaddr: %d %s\n", |
|
errno,strerror(errno))); |
|
/* TODO: should we exit here? */ |
} | } |
|
|
|
str = netsnmp_udp_fmtaddr(NULL, (void *)&addr_pair, |
|
sizeof(netsnmp_udp_addr_pair)); |
|
DEBUGMSGTL(("netsnmp_udp", "client open %s\n", str)); |
|
free(str); |
|
|
/* | /* |
* Save the (remote) address in the | * Save the (remote) address in the |
* transport-specific data pointer for later use by netsnmp_udp_send. | * transport-specific data pointer for later use by netsnmp_udp_send. |
