/***********************************************************************
*
* smtp_perform()
*
* This is the actual DO function for SMTP. Get a file/directory according to
* the options previously setup.
*/
static CURLcode smtp_perform(struct connectdata *conn, bool *connected,
bool *dophase_done)
{
/* This is SMTP and no proxy */
CURLcode result = CURLE_OK;
DEBUGF(infof(conn->data, "DO phase starts\n"));
if(conn->data->set.opt_no_body) {
/* Requested no body means no transfer */
struct FTP *smtp = conn->data->state.proto.smtp;
smtp->transfer = FTPTRANSFER_INFO;
}
*dophase_done = FALSE; /* not done yet */
/* Start the first command in the DO phase */
result = smtp_mail(conn);
if(result)
return result;
/* Run the state-machine */
if(conn->data->state.used_interface == Curl_if_multi)
result = smtp_multi_statemach(conn, dophase_done);
else {
result = smtp_easy_statemach(conn);
*dophase_done = TRUE; /* with the easy interface we are done here */
}
*connected = conn->bits.tcpconnect[FIRSTSOCKET];
if(*dophase_done)
DEBUGF(infof(conn->data, "DO phase is complete\n"));
return result;
}
/***********************************************************************
*
* smtp_done()
*
* The DONE function. This does what needs to be done after a single DO has
* performed.
*
* Input argument is already checked for validity.
*/
static CURLcode smtp_done(struct connectdata *conn, CURLcode status,
bool premature)
{
struct SessionHandle *data = conn->data;
struct FTP *smtp = data->state.proto.smtp;
CURLcode result = CURLE_OK;
ssize_t bytes_written;
(void)premature;
if(!smtp)
/* When the easy handle is removed from the multi while libcurl is still
* trying to resolve the host name, it seems that the smtp struct is not
* yet initialized, but the removal action calls Curl_done() which calls
* this function. So we simply return success if no smtp pointer is set.
*/
return CURLE_OK;
if(status) {
conn->bits.close = TRUE; /* marked for closure */
result = status; /* use the already set error code */
}
else
/* TODO: make this work even when the socket is EWOULDBLOCK in this
call! */
/* write to socket (send away data) */
result = Curl_write(conn,
conn->writesockfd, /* socket to send to */
SMTP_EOB, /* buffer pointer */
SMTP_EOB_LEN, /* buffer size */
&bytes_written); /* actually sent away */
if(status == CURLE_OK) {
struct smtp_conn *smtpc = &conn->proto.smtpc;
struct pingpong *pp = &smtpc->pp;
pp->response = Curl_tvnow(); /* timeout relative now */
state(conn, SMTP_POSTDATA);
/* run the state-machine
TODO: when the multi interface is used, this _really_ should be using
the smtp_multi_statemach function but we have no general support for
non-blocking DONE operations, not in the multi state machine and with
Curl_done() invokes on several places in the code!
*/
result = smtp_easy_statemach(conn);
}
/* clear these for next connection */
smtp->transfer = FTPTRANSFER_BODY;
return result;
}
/***********************************************************************
*
* smtp_quit()
*
* This should be called before calling sclose(). We should then wait for the
* response from the server before returning. The calling code should then try
* to close the connection.
*
*/
static CURLcode smtp_quit(struct connectdata *conn)
{
CURLcode result = CURLE_OK;
result = Curl_pp_sendf(&conn->proto.smtpc.pp, "QUIT");
if(result)
return result;
state(conn, SMTP_QUIT);
result = smtp_easy_statemach(conn);
return result;
}
/*
* smtp_connect() should do everything that is to be considered a part of
* the connection phase.
*
* The variable 'done' points to will be TRUE if the protocol-layer connect
* phase is done when this function returns, or FALSE is not. When called as
* a part of the easy interface, it will always be TRUE.
*/
static CURLcode smtp_connect(struct connectdata *conn,
bool *done) /* see description above */
{
CURLcode result;
struct smtp_conn *smtpc = &conn->proto.smtpc;
struct SessionHandle *data=conn->data;
struct pingpong *pp=&smtpc->pp;
const char *path = conn->data->state.path;
int len;
char localhost[1024 + 1];
*done = FALSE; /* default to not done yet */
/* If there already is a protocol-specific struct allocated for this
sessionhandle, deal with it */
Curl_reset_reqproto(conn);
result = smtp_init(conn);
if(CURLE_OK != result)
return result;
/* We always support persistant connections on smtp */
conn->bits.close = FALSE;
pp->response_time = RESP_TIMEOUT; /* set default response time-out */
pp->statemach_act = smtp_statemach_act;
pp->endofresp = smtp_endofresp;
pp->conn = conn;
#if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_PROXY)
if(conn->bits.tunnel_proxy && conn->bits.httpproxy) {
/* for SMTP over HTTP proxy */
struct HTTP http_proxy;
struct FTP *smtp_save;
/* BLOCKING */
/* We want "seamless" SMTP operations through HTTP proxy tunnel */
/* Curl_proxyCONNECT is based on a pointer to a struct HTTP at the member
* conn->proto.http; we want SMTP through HTTP and we have to change the
* member temporarily for connecting to the HTTP proxy. After
* Curl_proxyCONNECT we have to set back the member to the original struct
* SMTP pointer
*/
smtp_save = data->state.proto.smtp;
memset(&http_proxy, 0, sizeof(http_proxy));
data->state.proto.http = &http_proxy;
result = Curl_proxyCONNECT(conn, FIRSTSOCKET,
conn->host.name, conn->remote_port);
data->state.proto.smtp = smtp_save;
if(CURLE_OK != result)
return result;
}
#endif /* !CURL_DISABLE_HTTP && !CURL_DISABLE_PROXY */
if(conn->protocol & PROT_SMTPS) {
/* BLOCKING */
/* SMTPS is simply smtp with SSL for the control channel */
/* now, perform the SSL initialization for this socket */
result = Curl_ssl_connect(conn, FIRSTSOCKET);
if(result)
return result;
}
Curl_pp_init(pp); /* init the response reader stuff */
pp->response_time = RESP_TIMEOUT; /* set default response time-out */
pp->statemach_act = smtp_statemach_act;
pp->endofresp = smtp_endofresp;
pp->conn = conn;
if(!*path) {
if(!Curl_gethostname(localhost, sizeof localhost))
path = localhost;
else
path = "localhost";
}
/* url decode the path and use it as domain with EHLO */
smtpc->domain = curl_easy_unescape(conn->data, path, 0, &len);
if(!smtpc->domain)
return CURLE_OUT_OF_MEMORY;
/* When we connect, we start in the state where we await the server greeting
*/
state(conn, SMTP_SERVERGREET);
if(data->state.used_interface == Curl_if_multi)
result = smtp_multi_statemach(conn, done);
else {
result = smtp_easy_statemach(conn);
if(!result)
*done = TRUE;
}
return result;
}
/***********************************************************************
*
* smtp_done()
*
* The DONE function. This does what needs to be done after a single DO has
* performed.
*
* Input argument is already checked for validity.
*/
static CURLcode smtp_done(struct connectdata *conn, CURLcode status,
bool premature)
{
struct SessionHandle *data = conn->data;
struct FTP *smtp = data->state.proto.smtp;
CURLcode result = CURLE_OK;
ssize_t bytes_written;
(void)premature;
if(!smtp)
/* When the easy handle is removed from the multi while libcurl is still
* trying to resolve the host name, it seems that the smtp struct is not
* yet initialized, but the removal action calls Curl_done() which calls
* this function. So we simply return success if no smtp pointer is set.
*/
return CURLE_OK;
if(status) {
conn->bits.close = TRUE; /* marked for closure */
result = status; /* use the already set error code */
}
else if(!data->set.connect_only) {
struct smtp_conn *smtpc = &conn->proto.smtpc;
struct pingpong *pp = &smtpc->pp;
/* Send the end of block data */
result = Curl_write(conn,
conn->writesockfd, /* socket to send to */
SMTP_EOB, /* buffer pointer */
SMTP_EOB_LEN, /* buffer size */
&bytes_written); /* actually sent away */
if(result)
return result;
if(bytes_written != SMTP_EOB_LEN) {
/* The whole chunk was not sent so keep it around and adjust the
pingpong structure accordingly */
pp->sendthis = strdup(SMTP_EOB);
pp->sendsize = SMTP_EOB_LEN;
pp->sendleft = SMTP_EOB_LEN - bytes_written;
}
else
/* Successfully sent so adjust the response timeout relative to now */
pp->response = Curl_tvnow();
state(conn, SMTP_POSTDATA);
/* Run the state-machine
TODO: when the multi interface is used, this _really_ should be using
the smtp_multi_statemach function but we have no general support for
non-blocking DONE operations, not in the multi state machine and with
Curl_done() invokes on several places in the code!
*/
result = smtp_easy_statemach(conn);
}
/* Clear the transfer mode for the next connection */
smtp->transfer = FTPTRANSFER_BODY;
return result;
}
/***********************************************************************
*
* smtp_connect()
*
* This function should do everything that is to be considered a part of
* the connection phase.
*
* The variable pointed to by 'done' will be TRUE if the protocol-layer
* connect phase is done when this function returns, or FALSE if not. When
* called as a part of the easy interface, it will always be TRUE.
*/
static CURLcode smtp_connect(struct connectdata *conn, bool *done)
{
CURLcode result;
struct smtp_conn *smtpc = &conn->proto.smtpc;
struct SessionHandle *data = conn->data;
struct pingpong *pp = &smtpc->pp;
const char *path = conn->data->state.path;
char localhost[HOSTNAME_MAX + 1];
*done = FALSE; /* default to not done yet */
/* If there already is a protocol-specific struct allocated for this
sessionhandle, deal with it */
Curl_reset_reqproto(conn);
result = smtp_init(conn);
if(CURLE_OK != result)
return result;
/* We always support persistent connections on smtp */
conn->bits.close = FALSE;
pp->response_time = RESP_TIMEOUT; /* set default response time-out */
pp->statemach_act = smtp_statemach_act;
pp->endofresp = smtp_endofresp;
pp->conn = conn;
if((conn->handler->protocol & CURLPROTO_SMTPS) &&
data->state.used_interface != Curl_if_multi) {
/* SMTPS is simply smtp with SSL for the control channel */
/* so perform the SSL initialization for this socket */
result = Curl_ssl_connect(conn, FIRSTSOCKET);
if(result)
return result;
}
/* Initialise the response reader stuff */
Curl_pp_init(pp);
/* Set the default response time-out */
pp->response_time = RESP_TIMEOUT;
pp->statemach_act = smtp_statemach_act;
pp->endofresp = smtp_endofresp;
pp->conn = conn;
/* Calculate the path if necessary */
if(!*path) {
if(!Curl_gethostname(localhost, sizeof(localhost)))
path = localhost;
else
path = "localhost";
}
/* URL decode the path and use it as the domain in our EHLO */
result = Curl_urldecode(conn->data, path, 0, &smtpc->domain, NULL, TRUE);
if(result)
return result;
/* Start off waiting for the server greeting response */
state(conn, SMTP_SERVERGREET);
if(data->state.used_interface == Curl_if_multi)
result = smtp_multi_statemach(conn, done);
else {
result = smtp_easy_statemach(conn);
if(!result)
*done = TRUE;
}
return result;
}
