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-rw-r--r--libs/libcurl/src/http_negotiate.c376
1 files changed, 63 insertions, 313 deletions
diff --git a/libs/libcurl/src/http_negotiate.c b/libs/libcurl/src/http_negotiate.c
index 9b981b3327..51375e81d1 100644
--- a/libs/libcurl/src/http_negotiate.c
+++ b/libs/libcurl/src/http_negotiate.c
@@ -5,11 +5,11 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2013, 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
@@ -22,331 +22,99 @@
#include "curl_setup.h"
-#ifdef HAVE_GSSAPI
-#ifdef HAVE_OLD_GSSMIT
-#define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
-#define NCOMPAT 1
-#endif
-
-#ifndef CURL_DISABLE_HTTP
+#if !defined(CURL_DISABLE_HTTP) && defined(USE_SPNEGO)
#include "urldata.h"
#include "sendf.h"
-#include "curl_gssapi.h"
-#include "rawstr.h"
-#include "curl_base64.h"
#include "http_negotiate.h"
-#include "curl_memory.h"
-#include "url.h"
-
-#ifdef HAVE_SPNEGO
-# include <spnegohelp.h>
-# ifdef USE_SSLEAY
-# ifdef USE_OPENSSL
-# include <openssl/objects.h>
-# else
-# include <objects.h>
-# endif
-# else
-# error "Can't compile SPNEGO support without OpenSSL."
-# endif
-#endif
-
-#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, bool proxy, gss_name_t *server)
+CURLcode 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;
- 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,
- const 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) {
- 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);
+ /* Point to the username, password, service and host */
+ const char *userp;
+ const char *passwdp;
+ const char *service;
+ const char *host;
- infof(conn->data, "%s\n", 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 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;
- size_t rawlen = 0;
- bool gss;
- const char* protocol;
- CURLcode error;
+ /* Point to the correct struct with this */
+ struct negotiatedata *neg_ctx;
- 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;
- }
+ 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;
+ 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->context && neg_ctx->status == GSS_S_COMPLETE) {
- /* 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(data);
- return -1;
- }
+ /* Not set means empty */
+ if(!userp)
+ userp = "";
- if(neg_ctx->server_name == NULL &&
- (ret = get_gss_name(conn, proxy, &neg_ctx->server_name)))
- return ret;
+ if(!passwdp)
+ passwdp = "";
- header += strlen(neg_ctx->protocol);
+ /* Obtain the input token, if any */
+ header += strlen("Negotiate");
while(*header && ISSPACE(*header))
header++;
len = strlen(header);
- if(len > 0) {
- error = Curl_base64_decode(header,
- (unsigned char **)&input_token.value, &rawlen);
- if(error || rawlen == 0)
- return -1;
- input_token.length = rawlen;
-
- DEBUGASSERT(input_token.value != NULL);
-
-#ifdef HAVE_SPNEGO /* Handle SPNEGO */
- if(checkprefix("Negotiate", header)) {
- unsigned char *spnegoToken = NULL;
- size_t spnegoTokenLength = 0;
- gss_buffer_desc mechToken = GSS_C_EMPTY_BUFFER;
-
- spnegoToken = malloc(input_token.length);
- if(spnegoToken == NULL) {
- Curl_safefree(input_token.value);
- return CURLE_OUT_OF_MEMORY;
- }
- memcpy(spnegoToken, input_token.value, input_token.length);
- spnegoTokenLength = input_token.length;
-
- if(!parseSpnegoTargetToken(spnegoToken,
- spnegoTokenLength,
- NULL,
- NULL,
- (unsigned char**)&mechToken.value,
- &mechToken.length,
- NULL,
- NULL)) {
- Curl_safefree(spnegoToken);
- infof(data, "Parse SPNEGO Target Token failed\n");
- }
- else if(!mechToken.value || !mechToken.length) {
- Curl_safefree(spnegoToken);
- if(mechToken.value)
- gss_release_buffer(&discard_st, &mechToken);
- infof(data, "Parse SPNEGO Target Token succeeded (NULL token)\n");
- }
- else {
- Curl_safefree(spnegoToken);
- Curl_safefree(input_token.value);
- input_token.value = malloc(mechToken.length);
- if(input_token.value == NULL) {
- gss_release_buffer(&discard_st, &mechToken);
- return CURLE_OUT_OF_MEMORY;
- }
- memcpy(input_token.value, mechToken.value, mechToken.length);
- input_token.length = mechToken.length;
- gss_release_buffer(&discard_st, &mechToken);
- infof(data, "Parse SPNEGO Target Token succeeded\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 = Curl_gss_init_sec_context(data,
- &minor_status,
- &neg_ctx->context,
- neg_ctx->server_name,
- GSS_C_NO_CHANNEL_BINDINGS,
- &input_token,
- &output_token,
- NULL);
- Curl_safefree(input_token.value);
-
- neg_ctx->status = major_status;
- if(GSS_ERROR(major_status)) {
- if(output_token.value)
- gss_release_buffer(&discard_st, &output_token);
- log_gss_error(conn, minor_status, "gss_init_sec_context() failed: ");
- return -1;
- }
+ /* Initilise the security context and decode our challenge */
+ result = Curl_auth_decode_spnego_message(data, userp, passwdp, service,
+ host, header, neg_ctx);
- if(!output_token.value || !output_token.length) {
- if(output_token.value)
- gss_release_buffer(&discard_st, &output_token);
- return -1;
- }
+ if(result)
+ Curl_auth_spnego_cleanup(neg_ctx);
- neg_ctx->output_token = output_token;
- return 0;
+ return result;
}
-
CURLcode Curl_output_negotiate(struct connectdata *conn, bool proxy)
{
- struct negotiatedata *neg_ctx = proxy?&conn->data->state.proxyneg:
+ struct negotiatedata *neg_ctx = proxy ? &conn->data->state.proxyneg :
&conn->data->state.negotiate;
- char *encoded = NULL;
+ char *base64 = NULL;
size_t len = 0;
char *userp;
- CURLcode error;
- OM_uint32 discard_st;
+ CURLcode result;
-#ifdef HAVE_SPNEGO /* Handle SPNEGO */
- if(checkprefix("Negotiate", neg_ctx->protocol)) {
- ASN1_OBJECT *object = NULL;
- unsigned char *responseToken = NULL;
- size_t responseTokenLength = 0;
- gss_buffer_desc spnegoToken = GSS_C_EMPTY_BUFFER;
+ result = Curl_auth_create_spnego_message(conn->data, neg_ctx, &base64, &len);
+ if(result)
+ return result;
- 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;
+ userp = aprintf("%sAuthorization: Negotiate %s\r\n", proxy ? "Proxy-" : "",
+ base64);
- object = OBJ_txt2obj("1.2.840.113554.1.2.2", 1);
- if(!object) {
- Curl_safefree(responseToken);
- return CURLE_OUT_OF_MEMORY;
- }
-
- if(!makeSpnegoInitialToken(object,
- responseToken,
- responseTokenLength,
- (unsigned char**)&spnegoToken.value,
- &spnegoToken.length)) {
- Curl_safefree(responseToken);
- ASN1_OBJECT_free(object);
- infof(conn->data, "Make SPNEGO Initial Token failed\n");
- }
- else if(!spnegoToken.value || !spnegoToken.length) {
- Curl_safefree(responseToken);
- ASN1_OBJECT_free(object);
- if(spnegoToken.value)
- gss_release_buffer(&discard_st, &spnegoToken);
- infof(conn->data, "Make SPNEGO Initial Token succeeded (NULL token)\n");
- }
- else {
- Curl_safefree(responseToken);
- ASN1_OBJECT_free(object);
- gss_release_buffer(&discard_st, &neg_ctx->output_token);
- neg_ctx->output_token.value = spnegoToken.value;
- neg_ctx->output_token.length = spnegoToken.length;
- infof(conn->data, "Make SPNEGO Initial Token succeeded\n");
- }
- }
-#endif
- error = Curl_base64_encode(conn->data,
- neg_ctx->output_token.value,
- neg_ctx->output_token.length,
- &encoded, &len);
- if(error) {
- gss_release_buffer(&discard_st, &neg_ctx->output_token);
- neg_ctx->output_token.value = NULL;
- neg_ctx->output_token.length = 0;
- return error;
- }
-
- 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: %s %s\r\n", proxy ? "Proxy-" : "",
- neg_ctx->protocol, encoded);
if(proxy) {
Curl_safefree(conn->allocptr.proxyuserpwd);
conn->allocptr.proxyuserpwd = userp;
@@ -356,33 +124,15 @@ CURLcode Curl_output_negotiate(struct connectdata *conn, bool proxy)
conn->allocptr.userpwd = userp;
}
- Curl_safefree(encoded);
- Curl_cleanup_negotiate(conn->data);
+ free(base64);
return (userp == NULL) ? CURLE_OUT_OF_MEMORY : CURLE_OK;
}
-static void cleanup(struct negotiatedata *neg_ctx)
+void Curl_cleanup_negotiate(struct Curl_easy *data)
{
- 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.value)
- 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);
+ Curl_auth_spnego_cleanup(&data->state.negotiate);
+ Curl_auth_spnego_cleanup(&data->state.proxyneg);
}
-
-#endif
-#endif
+#endif /* !CURL_DISABLE_HTTP && USE_SPNEGO */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 14:51:15 +0000