/***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2016, 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.
- *
+ * are also available at https://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
+#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>
-#include <errno.h>
+#if !defined(CURL_DISABLE_HTTP) && defined(USE_SPNEGO)
#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>
+#include "vauth/vauth.h"
-/* The last #include file should be: */
+/* The last 3 #include files should be in this order */
+#include "curl_printf.h"
+#include "curl_memory.h"
#include "memdebug.h"
-static int
-get_gss_name(struct connectdata *conn, gss_name_t *server)
+CURLcode Curl_input_negotiate(struct connectdata *conn, bool proxy,
+ const char *header)
{
- struct negotiatedata *neg_ctx = &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(conn->host.name) + 1;
- if (token.length + 1 > sizeof(name))
- return EMSGSIZE;
- sprintf(name, "%s@%s", service, 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];
+ CURLcode result;
+ struct Curl_easy *data = conn->data;
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) {
- sprintf(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, buf);
-}
-
-int Curl_input_negotiate(struct connectdata *conn, char *header)
-{
- struct negotiatedata *neg_ctx = &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((int)*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;
- }
+ /* Point to the username, password, service and host */
+ const char *userp;
+ const char *passwdp;
+ const char *service;
+ const char *host;
+
+ /* Point to the correct struct with this */
+ struct negotiatedata *neg_ctx;
+
+ if(proxy) {
+ userp = conn->http_proxy.user;
+ passwdp = conn->http_proxy.passwd;
+ service = data->set.str[STRING_PROXY_SERVICE_NAME] ?
+ data->set.str[STRING_PROXY_SERVICE_NAME] : "HTTP";
+ host = conn->http_proxy.host.name;
+ neg_ctx = &data->state.proxyneg;
}
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;
+ userp = conn->user;
+ passwdp = conn->passwd;
+ service = data->set.str[STRING_SERVICE_NAME] ?
+ data->set.str[STRING_SERVICE_NAME] : "HTTP";
+ host = conn->host.name;
+ neg_ctx = &data->state.negotiate;
}
- if (neg_ctx->server_name == NULL &&
- (ret = get_gss_name(conn, &neg_ctx->server_name)))
- return ret;
+ /* Not set means empty */
+ if(!userp)
+ userp = "";
+
+ if(!passwdp)
+ passwdp = "";
- header += strlen(neg_ctx->protocol);
- while(*header && isspace((int)*header))
+ /* Obtain the input token, if any */
+ header += strlen("Negotiate");
+ while(*header && ISSPACE(*header))
header++;
len = strlen(header);
- if (len > 0) {
- int rawlen;
- input_token.length = (len+3)/4 * 3;
- input_token.value = malloc(input_token.length);
- if (input_token.value == NULL)
- return ENOMEM;
- rawlen = Curl_base64_decode(header, 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 succeded\n");
- }
+ if(!len) {
+ /* Is this the first call in a new negotiation? */
+ if(neg_ctx->context) {
+ /* The server rejected our authentication and hasn't suppled any more
+ negotiation mechanisms */
+ return CURLE_LOGIN_DENIED;
}
-#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;
- }
+ /* Initilise the security context and decode our challenge */
+ result = Curl_auth_decode_spnego_message(data, userp, passwdp, service,
+ host, header, neg_ctx);
- neg_ctx->output_token = output_token;
- /* conn->bits.close = FALSE; */
+ if(result)
+ Curl_auth_spnego_cleanup(neg_ctx);
- return 0;
+ return result;
}
-
-
-CURLcode Curl_output_negotiate(struct connectdata *conn)
-{
- struct negotiatedata *neg_ctx = &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 succeded\n");
- }
+CURLcode Curl_output_negotiate(struct connectdata *conn, bool proxy)
+{
+ struct negotiatedata *neg_ctx = proxy ? &conn->data->state.proxyneg :
+ &conn->data->state.negotiate;
+ char *base64 = NULL;
+ size_t len = 0;
+ char *userp;
+ CURLcode result;
+
+ result = Curl_auth_create_spnego_message(conn->data, neg_ctx, &base64, &len);
+ if(result)
+ return result;
+
+ userp = aprintf("%sAuthorization: Negotiate %s\r\n", proxy ? "Proxy-" : "",
+ base64);
+
+ if(proxy) {
+ Curl_safefree(conn->allocptr.proxyuserpwd);
+ conn->allocptr.proxyuserpwd = userp;
+ }
+ else {
+ Curl_safefree(conn->allocptr.userpwd);
+ conn->allocptr.userpwd = userp;
}
-#endif
- len = Curl_base64_encode(neg_ctx->output_token.value,
- neg_ctx->output_token.length,
- &encoded);
- if (len < 0)
- return CURLE_OUT_OF_MEMORY;
+ free(base64);
- conn->allocptr.userpwd =
- aprintf("Authorization: %s %s\r\n", 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;
+ return (userp == NULL) ? CURLE_OUT_OF_MEMORY : CURLE_OK;
}
-void Curl_cleanup_negotiate(struct SessionHandle *data)
-{
- OM_uint32 minor_status;
- struct negotiatedata *neg_ctx = &data->state.negotiate;
-
- 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 Curl_easy *data)
+{
+ Curl_auth_spnego_cleanup(&data->state.negotiate);
+ Curl_auth_spnego_cleanup(&data->state.proxyneg);
}
-
-#endif
-#endif
+#endif /* !CURL_DISABLE_HTTP && USE_SPNEGO */
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