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-rw-r--r--lib/imap.c47
-rw-r--r--lib/imap.h2
2 files changed, 42 insertions, 7 deletions
diff --git a/lib/imap.c b/lib/imap.c
index 5e294158b..16410c7d5 100644
--- a/lib/imap.c
+++ b/lib/imap.c
@@ -108,6 +108,7 @@ static int imap_getsock(struct connectdata *conn,
static CURLcode imap_doing(struct connectdata *conn,
bool *dophase_done);
static CURLcode imap_setup_connection(struct connectdata * conn);
+static CURLcode imap_state_upgrade_tls(struct connectdata *conn);
/*
* IMAP protocol handler.
@@ -342,17 +343,38 @@ static CURLcode imap_state_starttls_resp(struct connectdata *conn,
result = CURLE_LOGIN_DENIED;
}
else {
- /* Curl_ssl_connect is BLOCKING */
- result = Curl_ssl_connect(conn, FIRSTSOCKET);
- if(CURLE_OK == result) {
- conn->protocol |= PROT_IMAPS;
- result = imap_state_login(conn);
+ if(data->state.used_interface == Curl_if_multi) {
+ state(conn, IMAP_UPGRADETLS);
+ return imap_state_upgrade_tls(conn);
+ }
+ else {
+ result = Curl_ssl_connect(conn, FIRSTSOCKET);
+ if(CURLE_OK == result) {
+ conn->protocol |= PROT_IMAPS;
+ result = imap_state_login(conn);
+ }
}
}
state(conn, IMAP_STOP);
return result;
}
+static CURLcode imap_state_upgrade_tls(struct connectdata *conn)
+{
+ struct imap_conn *imapc = &conn->proto.imapc;
+ CURLcode result;
+
+ result = Curl_ssl_connect_nonblocking(conn, FIRSTSOCKET, &imapc->ssldone);
+
+ if(imapc->ssldone) {
+ conn->protocol |= PROT_IMAPS;
+ result = imap_state_login(conn);
+ state(conn, IMAP_STOP);
+ }
+
+ return result;
+}
+
/* for LOGIN responses */
static CURLcode imap_state_login_resp(struct connectdata *conn,
int imapcode,
@@ -524,6 +546,10 @@ static CURLcode imap_statemach_act(struct connectdata *conn)
struct pingpong *pp = &imapc->pp;
size_t nread = 0;
+ /* busy upgrading the connection; right now all I/O is SSL/TLS, not IMAP */
+ if(imapc->state == IMAP_UPGRADETLS)
+ return imap_state_upgrade_tls(conn);
+
if(pp->sendleft)
return Curl_pp_flushsend(pp);
@@ -588,7 +614,14 @@ static CURLcode imap_multi_statemach(struct connectdata *conn,
bool *done)
{
struct imap_conn *imapc = &conn->proto.imapc;
- CURLcode result = Curl_pp_multi_statemach(&imapc->pp);
+ CURLcode result;
+
+ if((conn->protocol & PROT_IMAPS) && !imapc->ssldone) {
+ result = Curl_ssl_connect_nonblocking(conn, FIRSTSOCKET, &imapc->ssldone);
+ }
+ else {
+ result = Curl_pp_multi_statemach(&imapc->pp);
+ }
*done = (bool)(imapc->state == IMAP_STOP);
@@ -700,7 +733,7 @@ static CURLcode imap_connect(struct connectdata *conn,
}
#endif /* !CURL_DISABLE_HTTP && !CURL_DISABLE_PROXY */
- if(conn->protocol & PROT_IMAPS) {
+ if((conn->protocol & PROT_IMAPS) && data->state.used_interface != Curl_if_multi) {
/* BLOCKING */
/* IMAPS is simply imap with SSL for the control channel */
/* now, perform the SSL initialization for this socket */
diff --git a/lib/imap.h b/lib/imap.h
index 2f0b62a61..c1395160a 100644
--- a/lib/imap.h
+++ b/lib/imap.h
@@ -33,6 +33,7 @@ typedef enum {
a connect */
IMAP_LOGIN,
IMAP_STARTTLS,
+ IMAP_UPGRADETLS, /* asynchronously upgrade the connection to SSL/TLS (multi mode only) */
IMAP_SELECT,
IMAP_FETCH,
IMAP_LOGOUT,
@@ -47,6 +48,7 @@ struct imap_conn {
imapstate state; /* always use imap.c:state() to change state! */
int cmdid; /* id number/index */
const char *idstr; /* pointer to a string for which to wait for as id */
+ bool ssldone; /* is connect() over SSL done? only relevant in multi mode */
};
extern const struct Curl_handler Curl_handler_imap;