/*
* Curl_pp_statemach()
*/
CURLcode Curl_pp_statemach(struct pingpong *pp, bool block,
bool disconnecting)
{
struct connectdata *conn = pp->conn;
curl_socket_t sock = conn->sock[FIRSTSOCKET];
int rc;
time_t interval_ms;
time_t timeout_ms = Curl_pp_state_timeout(pp, disconnecting);
struct Curl_easy *data = conn->data;
CURLcode result = CURLE_OK;
if(timeout_ms <= 0) {
failf(data, "server response timeout");
return CURLE_OPERATION_TIMEDOUT; /* already too little time */
}
if(block) {
interval_ms = 1000; /* use 1 second timeout intervals */
if(timeout_ms < interval_ms)
interval_ms = timeout_ms;
}
else
interval_ms = 0; /* immediate */
if(Curl_ssl_data_pending(conn, FIRSTSOCKET))
rc = 1;
else if(Curl_pp_moredata(pp))
/* We are receiving and there is data in the cache so just read it */
rc = 1;
else if(!pp->sendleft && Curl_ssl_data_pending(conn, FIRSTSOCKET))
/* We are receiving and there is data ready in the SSL library */
rc = 1;
else
rc = Curl_socket_check(pp->sendleft?CURL_SOCKET_BAD:sock, /* reading */
CURL_SOCKET_BAD,
pp->sendleft?sock:CURL_SOCKET_BAD, /* writing */
interval_ms);
if(block) {
/* if we didn't wait, we don't have to spend time on this now */
if(Curl_pgrsUpdate(conn))
result = CURLE_ABORTED_BY_CALLBACK;
else
result = Curl_speedcheck(data, Curl_now());
if(result)
return result;
}
if(rc == -1) {
failf(data, "select/poll error");
result = CURLE_OUT_OF_MEMORY;
}
else if(rc)
result = pp->statemach_act(conn);
return result;
}
static CURLcode smtp_statemach_act(struct connectdata *conn)
{
CURLcode result = CURLE_OK;
curl_socket_t sock = conn->sock[FIRSTSOCKET];
struct Curl_easy *data = conn->data;
int smtpcode;
struct smtp_conn *smtpc = &conn->proto.smtpc;
struct pingpong *pp = &smtpc->pp;
size_t nread = 0;
/* Busy upgrading the connection; right now all I/O is SSL/TLS, not SMTP */
if(smtpc->state == SMTP_UPGRADETLS)
return smtp_perform_upgrade_tls(conn);
/* Flush any data that needs to be sent */
if(pp->sendleft)
return Curl_pp_flushsend(pp);
do {
/* Read the response from the server */
result = Curl_pp_readresp(sock, pp, &smtpcode, &nread);
if(result)
return result;
/* Store the latest response for later retrieval if necessary */
if(smtpc->state != SMTP_QUIT && smtpcode != 1)
data->info.httpcode = smtpcode;
if(!smtpcode)
break;
/* We have now received a full SMTP server response */
switch(smtpc->state) {
case SMTP_SERVERGREET:
result = smtp_state_servergreet_resp(conn, smtpcode, smtpc->state);
break;
case SMTP_EHLO:
result = smtp_state_ehlo_resp(conn, smtpcode, smtpc->state);
break;
case SMTP_HELO:
result = smtp_state_helo_resp(conn, smtpcode, smtpc->state);
break;
case SMTP_STARTTLS:
result = smtp_state_starttls_resp(conn, smtpcode, smtpc->state);
break;
case SMTP_AUTH:
result = smtp_state_auth_resp(conn, smtpcode, smtpc->state);
break;
case SMTP_COMMAND:
result = smtp_state_command_resp(conn, smtpcode, smtpc->state);
break;
case SMTP_MAIL:
result = smtp_state_mail_resp(conn, smtpcode, smtpc->state);
break;
case SMTP_RCPT:
result = smtp_state_rcpt_resp(conn, smtpcode, smtpc->state);
break;
case SMTP_DATA:
result = smtp_state_data_resp(conn, smtpcode, smtpc->state);
break;
case SMTP_POSTDATA:
result = smtp_state_postdata_resp(conn, smtpcode, smtpc->state);
break;
case SMTP_QUIT:
/* fallthrough, just stop! */
default:
/* internal error */
state(conn, SMTP_STOP);
break;
}
} while(!result && smtpc->state != SMTP_STOP && Curl_pp_moredata(pp));
return result;
}
static CURLcode pop3_statemach_act(struct connectdata *conn)
{
CURLcode result = CURLE_OK;
curl_socket_t sock = conn->sock[FIRSTSOCKET];
int pop3code;
struct pop3_conn *pop3c = &conn->proto.pop3c;
struct pingpong *pp = &pop3c->pp;
size_t nread = 0;
/* Busy upgrading the connection; right now all I/O is SSL/TLS, not POP3 */
if(pop3c->state == POP3_UPGRADETLS)
return pop3_perform_upgrade_tls(conn);
/* Flush any data that needs to be sent */
if(pp->sendleft)
return Curl_pp_flushsend(pp);
do {
/* Read the response from the server */
result = Curl_pp_readresp(sock, pp, &pop3code, &nread);
if(result)
return result;
if(!pop3code)
break;
/* We have now received a full POP3 server response */
switch(pop3c->state) {
case POP3_SERVERGREET:
result = pop3_state_servergreet_resp(conn, pop3code, pop3c->state);
break;
case POP3_CAPA:
result = pop3_state_capa_resp(conn, pop3code, pop3c->state);
break;
case POP3_STARTTLS:
result = pop3_state_starttls_resp(conn, pop3code, pop3c->state);
break;
case POP3_AUTH:
result = pop3_state_auth_resp(conn, pop3code, pop3c->state);
break;
#ifndef CURL_DISABLE_CRYPTO_AUTH
case POP3_APOP:
result = pop3_state_apop_resp(conn, pop3code, pop3c->state);
break;
#endif
case POP3_USER:
result = pop3_state_user_resp(conn, pop3code, pop3c->state);
break;
case POP3_PASS:
result = pop3_state_pass_resp(conn, pop3code, pop3c->state);
break;
case POP3_COMMAND:
result = pop3_state_command_resp(conn, pop3code, pop3c->state);
break;
case POP3_QUIT:
/* fallthrough, just stop! */
default:
/* internal error */
state(conn, POP3_STOP);
break;
}
} while(!result && pop3c->state != POP3_STOP && Curl_pp_moredata(pp));
return result;
}
