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-rw-r--r--lib/socks.c27
-rw-r--r--lib/url.c8
-rw-r--r--lib/urldata.h1
3 files changed, 27 insertions, 9 deletions
diff --git a/lib/socks.c b/lib/socks.c
index 968b720b7..000cd9c2d 100644
--- a/lib/socks.c
+++ b/lib/socks.c
@@ -387,6 +387,8 @@ CURLcode Curl_SOCKS5(const char *proxy_user,
(conn->socks_proxy.proxytype == CURLPROXY_SOCKS5) ? TRUE : FALSE;
const size_t hostname_len = strlen(hostname);
ssize_t len = 0;
+ const unsigned long auth = data->set.socks5auth;
+ bool allow_gssapi = FALSE;
if(conn->bits.httpproxy)
infof(conn->data, "SOCKS5: connecting to HTTP proxy %s port %d\n",
@@ -427,13 +429,24 @@ CURLcode Curl_SOCKS5(const char *proxy_user,
return CURLE_COULDNT_CONNECT;
}
+ if(auth & ~(CURLAUTH_BASIC | CURLAUTH_GSSAPI))
+ infof(conn->data,
+ "warning: unsupported value passed to CURLOPT_SOCKS5_AUTH: %lu\n",
+ auth);
+ if(!(auth & CURLAUTH_BASIC))
+ /* disable username/password auth */
+ proxy_user = NULL;
+#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
+ if(auth & CURLAUTH_GSSAPI)
+ allow_gssapi = TRUE;
+#endif
+
idx = 0;
socksreq[idx++] = 5; /* version */
idx++; /* reserve for the number of authentication methods */
socksreq[idx++] = 0; /* no authentication */
-#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
- socksreq[idx++] = 1; /* GSS-API */
-#endif
+ if(allow_gssapi)
+ socksreq[idx++] = 1; /* GSS-API */
if(proxy_user)
socksreq[idx++] = 2; /* username/password */
/* write the number of authentication methods */
@@ -485,7 +498,7 @@ CURLcode Curl_SOCKS5(const char *proxy_user,
;
}
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
- else if(socksreq[1] == 1) {
+ else if(allow_gssapi && (socksreq[1] == 1)) {
code = Curl_SOCKS5_gssapi_negotiate(sockindex, conn);
if(code) {
failf(data, "Unable to negotiate SOCKS5 GSS-API context.");
@@ -546,16 +559,12 @@ CURLcode Curl_SOCKS5(const char *proxy_user,
}
else {
/* error */
-#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
- if(socksreq[1] == 255) {
-#else
- if(socksreq[1] == 1) {
+ if(!allow_gssapi && (socksreq[1] == 1)) {
failf(data,
"SOCKS5 GSSAPI per-message authentication is not supported.");
return CURLE_COULDNT_CONNECT;
}
if(socksreq[1] == 255) {
-#endif
if(!proxy_user || !*proxy_user) {
failf(data,
"No authentication method was acceptable. (It is quite likely"
diff --git a/lib/url.c b/lib/url.c
index 3b3143ab8..07bdea129 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -545,6 +545,9 @@ CURLcode Curl_init_userdefined(struct UserDefined *set)
set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
+ /* SOCKS5 proxy auth defaults to username/password + GSS-API */
+ set->socks5auth = CURLAUTH_BASIC | CURLAUTH_GSSAPI;
+
/* make libcurl quiet by default: */
set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
@@ -1541,6 +1544,11 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
break;
#endif /* CURL_DISABLE_PROXY */
+ case CURLOPT_SOCKS5_AUTH:
+ data->set.socks5auth = va_arg(param, unsigned long);
+ if(data->set.socks5auth & ~(CURLAUTH_BASIC | CURLAUTH_GSSAPI))
+ result = CURLE_NOT_BUILT_IN;
+ break;
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
case CURLOPT_SOCKS5_GSSAPI_NEC:
/*
diff --git a/lib/urldata.h b/lib/urldata.h
index 8c4a029fe..e89d1d706 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -1615,6 +1615,7 @@ struct UserDefined {
long use_port; /* which port to use (when not using default) */
unsigned long httpauth; /* kind of HTTP authentication to use (bitmask) */
unsigned long proxyauth; /* kind of proxy authentication to use (bitmask) */
+ unsigned long socks5auth;/* kind of SOCKS5 authentication to use (bitmask) */
long followlocation; /* as in HTTP Location: */
long maxredirs; /* maximum no. of http(s) redirects to follow, set to -1
for infinity */