/* For STARTTLS responses */
static CURLcode pop3_state_starttls_resp(struct connectdata *conn,
int pop3code,
pop3state instate)
{
CURLcode result = CURLE_OK;
struct SessionHandle *data = conn->data;
(void)instate; /* no use for this yet */
if(pop3code != '+') {
if(data->set.use_ssl != CURLUSESSL_TRY) {
failf(data, "STARTTLS denied. %c", pop3code);
result = CURLE_USE_SSL_FAILED;
state(conn, POP3_STOP);
}
else
result = pop3_state_capa(conn);
}
else {
/* Curl_ssl_connect is BLOCKING */
result = Curl_ssl_connect(conn, FIRSTSOCKET);
if(CURLE_OK == result) {
pop3_to_pop3s(conn);
result = pop3_state_capa(conn);
}
else {
/* End of connect phase */
state(conn, POP3_STOP);
}
}
return result;
}
/* For the initial server greeting */
static CURLcode pop3_state_servergreet_resp(struct connectdata *conn,
int pop3code,
pop3state instate)
{
CURLcode result = CURLE_OK;
struct SessionHandle *data = conn->data;
struct pop3_conn *pop3c = &conn->proto.pop3c;
(void)instate; /* no use for this yet */
if(pop3code != '+') {
failf(data, "Got unexpected pop3-server response");
return CURLE_FTP_WEIRD_SERVER_REPLY;
}
if(data->set.use_ssl && !conn->ssl[FIRSTSOCKET].use) {
/* We don't have a SSL/TLS connection yet, but SSL is requested. Switch
to TLS connection now */
result = Curl_pp_sendf(&pop3c->pp, "STLS");
if(!result)
state(conn, POP3_STARTTLS);
}
else
result = pop3_state_capa(conn);
return result;
}
/* For the initial server greeting */
static CURLcode pop3_state_servergreet_resp(struct connectdata *conn,
int pop3code,
pop3state instate)
{
CURLcode result = CURLE_OK;
struct SessionHandle *data = conn->data;
(void)instate; /* no use for this yet */
if(pop3code != '+') {
failf(data, "Got unexpected pop3-server response");
return CURLE_FTP_WEIRD_SERVER_REPLY;
}
result = pop3_state_capa(conn);
return result;
}
static CURLcode pop3_state_upgrade_tls(struct connectdata *conn)
{
struct pop3_conn *pop3c = &conn->proto.pop3c;
CURLcode result;
result = Curl_ssl_connect_nonblocking(conn, FIRSTSOCKET, &pop3c->ssldone);
if(!result) {
if(pop3c->state != POP3_UPGRADETLS)
state(conn, POP3_UPGRADETLS);
if(pop3c->ssldone) {
pop3_to_pop3s(conn);
result = pop3_state_capa(conn);
}
}
return result;
}
/* For STARTTLS responses */
static CURLcode pop3_state_starttls_resp(struct connectdata *conn,
int pop3code,
pop3state instate)
{
CURLcode result = CURLE_OK;
struct SessionHandle *data = conn->data;
(void)instate; /* no use for this yet */
if(pop3code != '+') {
if(data->set.use_ssl != CURLUSESSL_TRY) {
failf(data, "STARTTLS denied. %c", pop3code);
result = CURLE_USE_SSL_FAILED;
}
else
result = pop3_state_capa(conn);
}
else
result = pop3_state_upgrade_tls(conn);
return result;
}