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nss: make FTPS work with --proxytunnel

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If the NSS code was in the middle of a non-blocking handshake and it
was asked to finish the handshake in blocking mode, it unexpectedly
continued in the non-blocking mode, which caused a FTPS connection
over CONNECT to fail with "(81) Socket not ready for send/recv".

Bug: https://bugzilla.redhat.com/1420327
This commit is contained in:
Kamil Dudka 2017-02-09 16:21:52 +01:00
parent bef0d00110
commit 8fa5409800
2 changed files with 13 additions and 12 deletions
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2
RELEASE-NOTES
View File

@ -87,6 +87,7 @@ This release includes the following bugfixes:
o telnet: Fix typos [45]
o transfer: only retry nobody-requests for HTTP [46]
o http2: reset push header counter fixes crash [47]
o nss: make FTPS work with --proxytunnel [48]
This release includes the following known bugs:
@ -157,3 +158,4 @@ References to bug reports and discussions on issues:
[45] = https://curl.haxx.se/bug/?i=1245
[46] = https://curl.haxx.se/bug/?i=1243
[47] = https://curl.haxx.se/bug/?i=1249
[48] = https://bugzilla.redhat.com/1420327

23
lib/vtls/nss.c
View File

@ -1612,13 +1612,14 @@ static CURLcode nss_fail_connect(struct ssl_connect_data *connssl,
return curlerr;
}
/* Switch the SSL socket into non-blocking mode. */
static CURLcode nss_set_nonblock(struct ssl_connect_data *connssl,
struct Curl_easy *data)
/* Switch the SSL socket into blocking or non-blocking mode. */
static CURLcode nss_set_blocking(struct ssl_connect_data *connssl,
struct Curl_easy *data,
bool blocking)
{
static PRSocketOptionData sock_opt;
sock_opt.option = PR_SockOpt_Nonblocking;
sock_opt.value.non_blocking = PR_TRUE;
sock_opt.value.non_blocking = !blocking;
if(PR_SetSocketOption(connssl->handle, &sock_opt) != PR_SUCCESS)
return nss_fail_connect(connssl, data, CURLE_SSL_CONNECT_ERROR);
@ -2007,16 +2008,14 @@ static CURLcode nss_connect_common(struct connectdata *conn, int sockindex,
/* we do not expect CURLE_AGAIN from nss_setup_connect() */
return result;
if(!blocking) {
/* in non-blocking mode, set NSS non-blocking mode before handshake */
result = nss_set_nonblock(connssl, data);
if(result)
return result;
}
connssl->connecting_state = ssl_connect_2;
}
/* enable/disable blocking mode before handshake */
result = nss_set_blocking(connssl, data, blocking);
if(result)
return result;
result = nss_do_connect(conn, sockindex);
switch(result) {
case CURLE_OK:
@ -2032,7 +2031,7 @@ static CURLcode nss_connect_common(struct connectdata *conn, int sockindex,
if(blocking) {
/* in blocking mode, set NSS non-blocking mode _after_ SSL handshake */
result = nss_set_nonblock(connssl, data);
result = nss_set_blocking(connssl, data, /* blocking */ FALSE);
if(result)
return result;
}