b6575ce0b0
the same state struct as the host auth, so both could never be used at the same time! I fixed it (without being able to check) to use two separate structs to allow authentication using Negotiate on host and proxy simultanouesly.
340 lines
11 KiB
C
340 lines
11 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 1998 - 2007, 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
|
|
* are also available at http://curl.haxx.se/docs/copyright.html.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the COPYING file.
|
|
*
|
|
* 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_GSSMIT
|
|
#define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
|
|
#endif
|
|
|
|
#ifndef CURL_DISABLE_HTTP
|
|
/* -- WIN32 approved -- */
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdarg.h>
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
|
|
#include "urldata.h"
|
|
#include "sendf.h"
|
|
#include "strequal.h"
|
|
#include "base64.h"
|
|
#include "http_negotiate.h"
|
|
#include "memory.h"
|
|
|
|
#define _MPRINTF_REPLACE /* use our functions only */
|
|
#include <curl/mprintf.h>
|
|
|
|
/* The last #include file should be: */
|
|
#include "memdebug.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";
|
|
|
|
token.length = strlen(service) + 1 + strlen(proxy ? conn->proxy.name :
|
|
conn->host.name) + 1;
|
|
if(token.length + 1 > sizeof(name))
|
|
return EMSGSIZE;
|
|
|
|
snprintf(name, sizeof(name), "%s@%s", service, proxy ? conn->proxy.name :
|
|
conn->host.name);
|
|
|
|
token.value = (void *) name;
|
|
major_status = gss_import_name(&minor_status,
|
|
&token,
|
|
GSS_C_NT_HOSTBASED_SERVICE,
|
|
server);
|
|
|
|
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);
|
|
}
|
|
|
|
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;
|
|
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;
|
|
}
|
|
|
|
if(neg_ctx->context && neg_ctx->status == GSS_S_COMPLETE) {
|
|
/* We finished succesfully 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);
|
|
return -1;
|
|
}
|
|
|
|
if(neg_ctx->server_name == NULL &&
|
|
(ret = get_gss_name(conn, proxy, &neg_ctx->server_name)))
|
|
return ret;
|
|
|
|
header += strlen(neg_ctx->protocol);
|
|
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)
|
|
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;
|
|
|
|
spnegoToken = malloc(input_token.length);
|
|
if(input_token.value == NULL)
|
|
return ENOMEM;
|
|
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 = NULL;
|
|
input_token.value = malloc(mechTokenLength);
|
|
memcpy(input_token.value, mechToken,mechTokenLength);
|
|
input_token.length = mechTokenLength;
|
|
free(mechToken);
|
|
mechToken = NULL;
|
|
infof(conn->data, "Parse SPNEGO Target Token succeeded\n");
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
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);
|
|
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: ");
|
|
return -1;
|
|
}
|
|
|
|
if(output_token.length == 0) {
|
|
return -1;
|
|
}
|
|
|
|
neg_ctx->output_token = output_token;
|
|
/* conn->bits.close = FALSE; */
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
CURLcode Curl_output_negotiate(struct connectdata *conn, bool proxy)
|
|
{
|
|
struct negotiatedata *neg_ctx = proxy?&conn->data->state.proxyneg:
|
|
&conn->data->state.negotiate;
|
|
OM_uint32 minor_status;
|
|
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");
|
|
}
|
|
}
|
|
#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);
|
|
gss_release_buffer(&minor_status, &neg_ctx->output_token);
|
|
return (conn->allocptr.userpwd == NULL) ? CURLE_OUT_OF_MEMORY : CURLE_OK;
|
|
}
|
|
|
|
static void cleanup(struct negotiatedata *neg_ctx)
|
|
{
|
|
OM_uint32 minor_status;
|
|
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)
|
|
gss_release_buffer(&minor_status, &neg_ctx->output_token);
|
|
|
|
if(neg_ctx->server_name != GSS_C_NO_NAME)
|
|
gss_release_name(&minor_status, &neg_ctx->server_name);
|
|
|
|
memset(neg_ctx, 0, sizeof(*neg_ctx));
|
|
}
|
|
|
|
void Curl_cleanup_negotiate(struct SessionHandle *data)
|
|
{
|
|
cleanup(&data->state.negotiate);
|
|
cleanup(&data->state.proxyneg);
|
|
}
|
|
|
|
|
|
#endif
|
|
#endif
|