/* For the initial server greeting */
static CURLcode pop3_state_servergreet_resp(struct connectdata *conn,
int pop3code,
pop3state instate)
{
CURLcode result = CURLE_OK;
struct Curl_easy *data = conn->data;
struct pop3_conn *pop3c = &conn->proto.pop3c;
const char *line = data->state.buffer;
size_t len = strlen(line);
(void)instate; /* no use for this yet */
if(pop3code != '+') {
failf(data, "Got unexpected pop3-server response");
result = CURLE_WEIRD_SERVER_REPLY;
}
else {
/* Does the server support APOP authentication? */
if(len >= 4 && line[len - 2] == '>') {
/* Look for the APOP timestamp */
size_t i;
for(i = 3; i < len - 2; ++i) {
if(line[i] == '<') {
/* Calculate the length of the timestamp */
size_t timestamplen = len - 1 - i;
char *at;
if(!timestamplen)
break;
/* Allocate some memory for the timestamp */
pop3c->apoptimestamp = (char *)calloc(1, timestamplen + 1);
if(!pop3c->apoptimestamp)
break;
/* Copy the timestamp */
memcpy(pop3c->apoptimestamp, line + i, timestamplen);
pop3c->apoptimestamp[timestamplen] = '\0';
/* If the timestamp does not contain '@' it is not (as required by
RFC-1939) conformant to the RFC-822 message id syntax, and we
therefore do not use APOP authentication. */
at = strchr(pop3c->apoptimestamp, '@');
if(!at)
Curl_safefree(pop3c->apoptimestamp);
else
/* Store the APOP capability */
pop3c->authtypes |= POP3_TYPE_APOP;
break;
}
}
}
result = pop3_perform_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;
struct pop3_conn *pop3c = &conn->proto.pop3c;
const char *line = data->state.buffer;
size_t len = strlen(line);
size_t i;
(void)instate; /* no use for this yet */
if(pop3code != '+') {
failf(data, "Got unexpected pop3-server response");
result = CURLE_FTP_WEIRD_SERVER_REPLY;
}
else {
/* Does the server support APOP authentication? */
if(len >= 4 && line[len - 2] == '>') {
/* Look for the APOP timestamp */
for(i = 3; i < len - 2; ++i) {
if(line[i] == '<') {
/* Calculate the length of the timestamp */
size_t timestamplen = len - 1 - i;
if(!timestamplen)
break;
/* Allocate some memory for the timestamp */
pop3c->apoptimestamp = (char *)calloc(1, timestamplen + 1);
if(!pop3c->apoptimestamp)
break;
/* Copy the timestamp */
memcpy(pop3c->apoptimestamp, line + i, timestamplen);
pop3c->apoptimestamp[timestamplen] = '\0';
/* Store the APOP capability */
pop3c->authtypes |= POP3_TYPE_APOP;
break;
}
}
}
result = pop3_perform_capa(conn);
}
return result;
}
/***********************************************************************
*
* pop3_perform_upgrade_tls()
*
* Performs the upgrade to TLS.
*/
static CURLcode pop3_perform_upgrade_tls(struct connectdata *conn)
{
CURLcode result = CURLE_OK;
struct pop3_conn *pop3c = &conn->proto.pop3c;
/* Start the SSL connection */
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_perform_capa(conn);
}
}
return result;
}
