* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
- * $Id$
***************************************************************************/
-#include "setup.h"
-#ifdef HAVE_GSSAPI
-#ifdef HAVE_OLD_GSSMIT
-#define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
-#endif
+#include "curl_setup.h"
-#ifndef CURL_DISABLE_HTTP
- /* -- WIN32 approved -- */
-#include <stdio.h>
-#include <string.h>
-#include <stdarg.h>
-#include <stdlib.h>
-#include <ctype.h>
+#if defined(HAVE_GSSAPI) && !defined(CURL_DISABLE_HTTP) && defined(USE_SPNEGO)
#include "urldata.h"
#include "sendf.h"
-#include "strequal.h"
-#include "base64.h"
+#include "curl_gssapi.h"
+#include "rawstr.h"
+#include "curl_base64.h"
#include "http_negotiate.h"
-#include "memory.h"
-
-#ifdef HAVE_SPNEGO
-# include <spnegohelp.h>
-# if defined(USE_OPENSSL) && !defined(USE_YASSLEMUL)
-# include <openssl/objects.h>
-# else
-# error "Can't compile SPNEGO support without OpenSSL."
-# endif
-#endif
+#include "curl_memory.h"
+#include "url.h"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
static int
get_gss_name(struct connectdata *conn, bool proxy, gss_name_t *server)
{
- struct negotiatedata *neg_ctx = proxy?&conn->data->state.proxyneg:
- &conn->data->state.negotiate;
OM_uint32 major_status, minor_status;
gss_buffer_desc token = GSS_C_EMPTY_BUFFER;
char name[2048];
- const char* service;
-
- /* GSSAPI implementation by Globus (known as GSI) requires the name to be
- of form "<service>/<fqdn>" instead of <service>@<fqdn> (ie. slash instead
- of at-sign). Also GSI servers are often identified as 'host' not 'khttp'.
- Change following lines if you want to use GSI */
-
- /* IIS uses the <service>@<fqdn> form but uses 'http' as the service name */
-
- if(neg_ctx->gss)
- service = "KHTTP";
- else
- service = "HTTP";
+ const char* service = "HTTP";
token.length = strlen(service) + 1 + strlen(proxy ? conn->proxy.name :
conn->host.name) + 1;
return GSS_ERROR(major_status) ? -1 : 0;
}
-static void
-log_gss_error(struct connectdata *conn, OM_uint32 error_status, char *prefix)
-{
- OM_uint32 maj_stat, min_stat;
- OM_uint32 msg_ctx = 0;
- gss_buffer_desc status_string;
- char buf[1024];
- size_t len;
-
- snprintf(buf, sizeof(buf), "%s", prefix);
- len = strlen(buf);
- do {
- maj_stat = gss_display_status(&min_stat,
- error_status,
- GSS_C_MECH_CODE,
- GSS_C_NO_OID,
- &msg_ctx,
- &status_string);
- if(sizeof(buf) > len + status_string.length + 1) {
- snprintf(buf + len, sizeof(buf) - len,
- ": %s", (char*) status_string.value);
- len += status_string.length;
- }
- gss_release_buffer(&min_stat, &status_string);
- } while(!GSS_ERROR(maj_stat) && msg_ctx != 0);
-
- infof(conn->data, "%s", buf);
-}
-
/* returning zero (0) means success, everything else is treated as "failure"
with no care exactly what the failure was */
int Curl_input_negotiate(struct connectdata *conn, bool proxy,
const char *header)
{
- struct negotiatedata *neg_ctx = proxy?&conn->data->state.proxyneg:
- &conn->data->state.negotiate;
- OM_uint32 major_status, minor_status, minor_status2;
+ struct SessionHandle *data = conn->data;
+ struct negotiatedata *neg_ctx = proxy?&data->state.proxyneg:
+ &data->state.negotiate;
+ OM_uint32 major_status, minor_status, discard_st;
gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER;
gss_buffer_desc output_token = GSS_C_EMPTY_BUFFER;
int ret;
size_t len;
- bool gss;
- const char* protocol;
-
- while(*header && ISSPACE(*header))
- header++;
- if(checkprefix("GSS-Negotiate", header)) {
- protocol = "GSS-Negotiate";
- gss = TRUE;
- }
- else if(checkprefix("Negotiate", header)) {
- protocol = "Negotiate";
- gss = FALSE;
- }
- else
- return -1;
-
- if(neg_ctx->context) {
- if(neg_ctx->gss != gss) {
- return -1;
- }
- }
- else {
- neg_ctx->protocol = protocol;
- neg_ctx->gss = gss;
- }
+ size_t rawlen = 0;
+ CURLcode result;
if(neg_ctx->context && neg_ctx->status == GSS_S_COMPLETE) {
- /* We finished succesfully our part of authentication, but server
+ /* We finished successfully our part of authentication, but server
* rejected it (since we're again here). Exit with an error since we
* can't invent anything better */
- Curl_cleanup_negotiate(conn->data);
+ Curl_cleanup_negotiate(data);
return -1;
}
(ret = get_gss_name(conn, proxy, &neg_ctx->server_name)))
return ret;
- header += strlen(neg_ctx->protocol);
+ header += strlen("Negotiate");
while(*header && ISSPACE(*header))
header++;
len = strlen(header);
if(len > 0) {
- int rawlen = Curl_base64_decode(header,
- (unsigned char **)&input_token.value);
- if(rawlen < 0)
+ result = Curl_base64_decode(header, (unsigned char **)&input_token.value,
+ &rawlen);
+ if(result || rawlen == 0)
return -1;
input_token.length = rawlen;
-#ifdef HAVE_SPNEGO /* Handle SPNEGO */
- if(checkprefix("Negotiate", header)) {
- ASN1_OBJECT * object = NULL;
- int rc = 1;
- unsigned char * spnegoToken = NULL;
- size_t spnegoTokenLength = 0;
- unsigned char * mechToken = NULL;
- size_t mechTokenLength = 0;
-
- if(input_token.value == NULL)
- return CURLE_OUT_OF_MEMORY;
-
- spnegoToken = malloc(input_token.length);
- if(spnegoToken == NULL)
- return CURLE_OUT_OF_MEMORY;
-
- spnegoTokenLength = input_token.length;
-
- object = OBJ_txt2obj ("1.2.840.113554.1.2.2", 1);
- if(!parseSpnegoTargetToken(spnegoToken,
- spnegoTokenLength,
- NULL,
- NULL,
- &mechToken,
- &mechTokenLength,
- NULL,
- NULL)) {
- free(spnegoToken);
- spnegoToken = NULL;
- infof(conn->data, "Parse SPNEGO Target Token failed\n");
- }
- else {
- free(input_token.value);
- input_token.value = malloc(mechTokenLength);
- if (input_token.value == NULL)
- return CURLE_OUT_OF_MEMORY;
-
- memcpy(input_token.value, mechToken,mechTokenLength);
- input_token.length = mechTokenLength;
- free(mechToken);
- mechToken = NULL;
- infof(conn->data, "Parse SPNEGO Target Token succeeded\n");
- }
- }
-#endif
+ DEBUGASSERT(input_token.value != NULL);
}
- major_status = gss_init_sec_context(&minor_status,
- GSS_C_NO_CREDENTIAL,
- &neg_ctx->context,
- neg_ctx->server_name,
- GSS_C_NO_OID,
- GSS_C_DELEG_FLAG,
- 0,
- GSS_C_NO_CHANNEL_BINDINGS,
- &input_token,
- NULL,
- &output_token,
- NULL,
- NULL);
- if(input_token.length > 0)
- gss_release_buffer(&minor_status2, &input_token);
+ major_status = Curl_gss_init_sec_context(data,
+ &minor_status,
+ &neg_ctx->context,
+ neg_ctx->server_name,
+ &Curl_spnego_mech_oid,
+ GSS_C_NO_CHANNEL_BINDINGS,
+ &input_token,
+ &output_token,
+ TRUE,
+ NULL);
+ Curl_safefree(input_token.value);
+
neg_ctx->status = major_status;
if(GSS_ERROR(major_status)) {
- /* Curl_cleanup_negotiate(conn->data) ??? */
- log_gss_error(conn, minor_status,
- (char *)"gss_init_sec_context() failed: ");
+ if(output_token.value)
+ gss_release_buffer(&discard_st, &output_token);
+ Curl_gss_log_error(conn->data, minor_status,
+ "gss_init_sec_context() failed: ");
return -1;
}
- if(output_token.length == 0) {
+ if(!output_token.value || !output_token.length) {
+ if(output_token.value)
+ gss_release_buffer(&discard_st, &output_token);
return -1;
}
neg_ctx->output_token = output_token;
- /* conn->bits.close = FALSE; */
-
return 0;
}
struct negotiatedata *neg_ctx = proxy?&conn->data->state.proxyneg:
&conn->data->state.negotiate;
char *encoded = NULL;
- int len;
-
-#ifdef HAVE_SPNEGO /* Handle SPNEGO */
- if(checkprefix("Negotiate", neg_ctx->protocol)) {
- ASN1_OBJECT * object = NULL;
- int rc = 1;
- unsigned char * spnegoToken = NULL;
- size_t spnegoTokenLength = 0;
- unsigned char * responseToken = NULL;
- size_t responseTokenLength = 0;
-
- responseToken = malloc(neg_ctx->output_token.length);
- if( responseToken == NULL)
- return CURLE_OUT_OF_MEMORY;
- memcpy(responseToken, neg_ctx->output_token.value,
- neg_ctx->output_token.length);
- responseTokenLength = neg_ctx->output_token.length;
-
- object=OBJ_txt2obj ("1.2.840.113554.1.2.2", 1);
- if(!makeSpnegoInitialToken (object,
- responseToken,
- responseTokenLength,
- &spnegoToken,
- &spnegoTokenLength)) {
- free(responseToken);
- responseToken = NULL;
- infof(conn->data, "Make SPNEGO Initial Token failed\n");
- }
- else {
- free(neg_ctx->output_token.value);
- responseToken = NULL;
- neg_ctx->output_token.value = malloc(spnegoTokenLength);
- memcpy(neg_ctx->output_token.value, spnegoToken,spnegoTokenLength);
- neg_ctx->output_token.length = spnegoTokenLength;
- free(spnegoToken);
- spnegoToken = NULL;
- infof(conn->data, "Make SPNEGO Initial Token succeeded\n");
- }
+ size_t len = 0;
+ char *userp;
+ CURLcode result;
+ OM_uint32 discard_st;
+
+ result = Curl_base64_encode(conn->data,
+ neg_ctx->output_token.value,
+ neg_ctx->output_token.length,
+ &encoded, &len);
+ if(result) {
+ gss_release_buffer(&discard_st, &neg_ctx->output_token);
+ neg_ctx->output_token.value = NULL;
+ neg_ctx->output_token.length = 0;
+ return result;
}
-#endif
- len = Curl_base64_encode(conn->data,
- neg_ctx->output_token.value,
- neg_ctx->output_token.length,
- &encoded);
-
- if(len == 0)
- return CURLE_OUT_OF_MEMORY;
-
- conn->allocptr.userpwd =
- aprintf("%sAuthorization: %s %s\r\n", proxy ? "Proxy-" : "",
- neg_ctx->protocol, encoded);
- free(encoded);
- Curl_cleanup_negotiate (conn->data);
- return (conn->allocptr.userpwd == NULL) ? CURLE_OUT_OF_MEMORY : CURLE_OK;
+
+ if(!encoded || !len) {
+ gss_release_buffer(&discard_st, &neg_ctx->output_token);
+ neg_ctx->output_token.value = NULL;
+ neg_ctx->output_token.length = 0;
+ return CURLE_REMOTE_ACCESS_DENIED;
+ }
+
+ userp = aprintf("%sAuthorization: Negotiate %s\r\n", proxy ? "Proxy-" : "",
+ encoded);
+ if(proxy) {
+ Curl_safefree(conn->allocptr.proxyuserpwd);
+ conn->allocptr.proxyuserpwd = userp;
+ }
+ else {
+ Curl_safefree(conn->allocptr.userpwd);
+ conn->allocptr.userpwd = userp;
+ }
+
+ Curl_safefree(encoded);
+
+ return (userp == NULL) ? CURLE_OUT_OF_MEMORY : CURLE_OK;
}
static void cleanup(struct negotiatedata *neg_ctx)
if(neg_ctx->context != GSS_C_NO_CONTEXT)
gss_delete_sec_context(&minor_status, &neg_ctx->context, GSS_C_NO_BUFFER);
- if(neg_ctx->output_token.length != 0)
+ if(neg_ctx->output_token.value)
gss_release_buffer(&minor_status, &neg_ctx->output_token);
if(neg_ctx->server_name != GSS_C_NO_NAME)
cleanup(&data->state.proxyneg);
}
-
-#endif
-#endif
+#endif /* HAVE_GSSAPI && !CURL_DISABLE_HTTP && USE_SPNEGO */
projects / platform / upstream / curl.git / blobdiff