/**
* @brief Destroy and free a generic connection object after executing its protocol-specific destructor; update any statistics accordingly.
* @param con a pointer to the connection to be destroyed.
* @return This function returns no value.
*/
void con_destroy(connection_t *con) {
if (con && !con_decrement_refs(con)) {
switch (con->server->protocol) {
case (POP):
if (con->network.ssl) {
stats_decrement_by_name("pop.connections.secure");
}
stats_decrement_by_name("pop.connections.total");
pop_session_destroy(con);
break;
case (IMAP):
if (con->network.ssl) {
stats_decrement_by_name("imap.connections.secure");
}
stats_decrement_by_name("imap.connections.total");
imap_session_destroy(con);
break;
case (HTTP):
if (con->network.ssl) {
stats_decrement_by_name("http.connections.secure");
}
stats_decrement_by_name("http.connections.total");
http_session_destroy(con);
break;
case (SMTP):
if (con->network.ssl) {
stats_decrement_by_name("smtp.connections.secure");
}
stats_decrement_by_name("smtp.connections.total");
smtp_session_destroy(con);
break;
case (SUBMISSION):
if (con->network.ssl) {
stats_decrement_by_name("smtp.connections.secure");
}
stats_decrement_by_name("smtp.connections.total");
smtp_session_destroy(con);
break;
case (MOLTEN):
if (con->network.ssl) {
stats_decrement_by_name("molten.connections.secure");
}
stats_decrement_by_name("molten.connections.total");
molten_session_destroy(con);
break;
default:
break;
}
if (con->network.ssl) {
ssl_free(con->network.ssl);
}
if (con->network.sockd != -1) {
close(con->network.sockd);
}
st_cleanup(con->network.buffer);
st_cleanup(con->network.reverse.domain);
mutex_destroy(&(con->lock));
mm_free(con);
}
return;
}
POP_SESSION *pop_set_socket(POP_SESSION *psp, int s, int opt)
{
if (s < 0) {
return NULL;
}
if (psp == NULL && (psp = pop_session_create()) == NULL) {
return NULL;
}
#ifdef WITH_OPENSSL
if ((psp->bio = BIO_new_socket(s, BIO_NOCLOSE)) == NULL) {
__pop_set_error_openssl(psp, "BIO_new_socket(): ");
pop_session_destroy(psp);
return NULL;
}
#ifdef ENABLE_SSL
if (opt & POP_OPT_SSL) {
SSL_CTX *ctxp;
BIO *bio_ssl;
if ((ctxp = SSL_CTX_new(SSLv23_client_method())) == NULL) {
__pop_set_error_openssl(psp, "SSL_CTX_new(): ");
pop_session_destroy(psp);
return NULL;
}
if ((bio_ssl = BIO_new_ssl(ctxp, 1)) == NULL) {
__pop_set_error_openssl(psp, "BIO_new_ssl(): ");
pop_session_destroy(psp);
return NULL;
}
BIO_push(bio_ssl, psp->bio);
psp->bio = bio_ssl;
BIO_do_handshake(psp->bio);
}
#endif /* ENABLE_SSL */
{
BIO *bio_buffer;
if ((bio_buffer = BIO_new(BIO_f_buffer())) == NULL) {
__pop_set_error_openssl(psp, "BIO_new(): ");
pop_session_destroy(psp);
return NULL;
}
BIO_push(bio_buffer, psp->bio);
psp->bio = bio_buffer;
}
#else /* WITH_OPENSSL */
if ((psp->sw = dup(s)) < 0) {
__pop_set_error_errno(psp, "dup(s): ");
pop_session_destroy(psp);
return NULL;
}
if ((psp->fw = fdopen(psp->sw, "w")) == NULL) {
__pop_set_error_errno(psp, "fdopen(fw): ");
pop_session_destroy(psp);
return NULL;
}
if ((psp->fr = fdopen(s, "r")) == NULL) {
__pop_set_error_errno(psp, "fdopen(fr): ");
pop_session_destroy(psp);
return NULL;
}
psp->sr = s;
#endif /* WITH_OPENSSL */
return psp;
}
