* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2014, 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
* KIND, either express or implied.
*
***************************************************************************/
-#include "setup.h"
+
+#include "curl_setup.h"
#ifdef USE_WINDOWS_SSPI
-#ifndef CURL_DISABLE_HTTP
-/* -- WIN32 approved -- */
-#include <stdio.h>
-#include <string.h>
-#include <stdarg.h>
-#include <stdlib.h>
-#include <ctype.h>
+#if !defined(CURL_DISABLE_HTTP) && defined(USE_SPNEGO)
#include "urldata.h"
#include "sendf.h"
#include "rawstr.h"
+#include "warnless.h"
#include "curl_base64.h"
+#include "curl_sasl.h"
#include "http_negotiate.h"
#include "curl_memory.h"
+#include "curl_multibyte.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, char *server)
-{
- struct negotiatedata *neg_ctx = proxy?&conn->data->state.proxyneg:
- &conn->data->state.negotiate;
- const char* service;
- size_t length;
-
- /* 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,
- and SSPI then generates an NTLM token. When using <service>/<fqdn> a
- Kerberos token is generated. */
-
- if(neg_ctx->gss)
- service = "KHTTP";
- else
- service = "HTTP";
-
- length = strlen(service) + 1 + strlen(proxy ? conn->proxy.name :
- conn->host.name) + 1;
- if(length + 1 > sizeof(neg_ctx->server_name))
- return EMSGSIZE;
-
- snprintf(server, sizeof(neg_ctx->server_name), "%s/%s",
- service, proxy ? conn->proxy.name : conn->host.name);
-
- return 0;
-}
-
/* 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;
- BYTE *input_token = 0;
+ BYTE *input_token = NULL;
SecBufferDesc out_buff_desc;
SecBuffer out_sec_buff;
SecBufferDesc in_buff_desc;
SecBuffer in_sec_buff;
- ULONG context_attributes;
- TimeStamp lifetime;
-
+ unsigned long context_attributes;
+ TimeStamp expiry;
int ret;
size_t len = 0, input_token_len = 0;
- bool gss = FALSE;
- const char* protocol;
+ CURLcode error;
- while(*header && ISSPACE(*header))
- header++;
+ /* Point to the username and password */
+ const char *userp;
+ const char *passwdp;
- if(checkprefix("GSS-Negotiate", header)) {
- protocol = "GSS-Negotiate";
- gss = TRUE;
- }
- else if(checkprefix("Negotiate", header)) {
- protocol = "Negotiate";
- gss = FALSE;
- }
- else
- return -1;
+ /* Point to the correct struct with this */
+ struct negotiatedata *neg_ctx;
- if(neg_ctx->context) {
- if(neg_ctx->gss != gss) {
- return -1;
- }
+ if(proxy) {
+ userp = conn->proxyuser;
+ passwdp = conn->proxypasswd;
+ neg_ctx = &conn->data->state.proxyneg;
}
else {
- neg_ctx->protocol = protocol;
- neg_ctx->gss = gss;
+ userp = conn->user;
+ passwdp = conn->passwd;
+ neg_ctx = &conn->data->state.negotiate;
}
+ /* Not set means empty */
+ if(!userp)
+ userp = "";
+
+ if(!passwdp)
+ passwdp = "";
+
if(neg_ctx->context && neg_ctx->status == SEC_E_OK) {
- /* 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);
return -1;
}
- if(strlen(neg_ctx->server_name) == 0 &&
- (ret = get_gss_name(conn, proxy, neg_ctx->server_name)))
- return ret;
+ if(!neg_ctx->server_name) {
+ /* Check proxy auth requested but no given proxy name */
+ if(proxy && !conn->proxy.name)
+ return -1;
+
+ /* Generate our SPN */
+ neg_ctx->server_name = Curl_sasl_build_spn("HTTP",
+ proxy ? conn->proxy.name :
+ conn->host.name);
+ if(!neg_ctx->server_name)
+ return -1;
+ }
- if (!neg_ctx->max_token_length) {
+ if(!neg_ctx->output_token) {
PSecPkgInfo SecurityPackage;
- ret = s_pSecFn->QuerySecurityPackageInfo((SEC_CHAR *)"Negotiate",
+ ret = s_pSecFn->QuerySecurityPackageInfo((TCHAR *) TEXT(SP_NAME_NEGOTIATE),
&SecurityPackage);
- if (ret != SEC_E_OK)
+ if(ret != SEC_E_OK)
return -1;
/* Allocate input and output buffers according to the max token size
as indicated by the security package */
- neg_ctx->max_token_length = SecurityPackage->cbMaxToken;
- neg_ctx->output_token = (BYTE *)malloc(neg_ctx->max_token_length);
+ neg_ctx->token_max = SecurityPackage->cbMaxToken;
+ neg_ctx->output_token = malloc(neg_ctx->token_max);
s_pSecFn->FreeContextBuffer(SecurityPackage);
}
/* Obtain the input token, if any */
- header += strlen(neg_ctx->protocol);
+ header += strlen("Negotiate");
while(*header && ISSPACE(*header))
header++;
len = strlen(header);
- if(len > 0) {
- input_token = malloc(neg_ctx->max_token_length);
- if(!input_token)
+ 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 -1;
+ }
- input_token_len = Curl_base64_decode(header,
- (unsigned char **)&input_token);
- if(input_token_len == 0)
- return -1;
- }
+ /* We have to acquire credentials and allocate memory for the context */
+ neg_ctx->credentials = malloc(sizeof(CredHandle));
+ neg_ctx->context = malloc(sizeof(CtxtHandle));
- if ( !input_token ) {
- /* first call in a new negotation, we have to require credentials,
- and allocate memory for the context */
+ if(!neg_ctx->credentials || !neg_ctx->context)
+ return -1;
- neg_ctx->credentials = (CredHandle *)malloc(sizeof(CredHandle));
- neg_ctx->context = (CtxtHandle *)malloc(sizeof(CtxtHandle));
+ if(userp && *userp) {
+ /* Populate our identity structure */
+ error = Curl_create_sspi_identity(userp, passwdp, &neg_ctx->identity);
+ if(error)
+ return -1;
- if ( !neg_ctx->credentials || !neg_ctx->context)
- return -1;
+ /* Allow proper cleanup of the identity structure */
+ neg_ctx->p_identity = &neg_ctx->identity;
+ }
+ else
+ /* Use the current Windows user */
+ neg_ctx->p_identity = NULL;
+ /* Acquire our credientials handle */
neg_ctx->status =
- s_pSecFn->AcquireCredentialsHandle(NULL, (SEC_CHAR *)"Negotiate",
- SECPKG_CRED_OUTBOUND, NULL, NULL,
- NULL, NULL, neg_ctx->credentials,
- &lifetime);
- if ( neg_ctx->status != SEC_E_OK )
+ s_pSecFn->AcquireCredentialsHandle(NULL,
+ (TCHAR *) TEXT(SP_NAME_NEGOTIATE),
+ SECPKG_CRED_OUTBOUND, NULL,
+ neg_ctx->p_identity, NULL, NULL,
+ neg_ctx->credentials, &expiry);
+ if(neg_ctx->status != SEC_E_OK)
+ return -1;
+ }
+ else {
+ error = Curl_base64_decode(header,
+ (unsigned char **)&input_token,
+ &input_token_len);
+ if(error || !input_token_len)
return -1;
}
- /* prepare the output buffers, and input buffers if present */
- out_buff_desc.ulVersion = 0;
+ /* Setup the "output" security buffer */
+ out_buff_desc.ulVersion = SECBUFFER_VERSION;
out_buff_desc.cBuffers = 1;
out_buff_desc.pBuffers = &out_sec_buff;
-
- out_sec_buff.cbBuffer = neg_ctx->max_token_length;
out_sec_buff.BufferType = SECBUFFER_TOKEN;
out_sec_buff.pvBuffer = neg_ctx->output_token;
+ out_sec_buff.cbBuffer = curlx_uztoul(neg_ctx->token_max);
-
- if (input_token) {
- in_buff_desc.ulVersion = 0;
+ /* Setup the "input" security buffer if present */
+ if(input_token) {
+ in_buff_desc.ulVersion = SECBUFFER_VERSION;
in_buff_desc.cBuffers = 1;
- in_buff_desc.pBuffers = &out_sec_buff;
-
- in_sec_buff.cbBuffer = input_token_len;
+ in_buff_desc.pBuffers = &in_sec_buff;
in_sec_buff.BufferType = SECBUFFER_TOKEN;
in_sec_buff.pvBuffer = input_token;
+ in_sec_buff.cbBuffer = curlx_uztoul(input_token_len);
}
+ /* Generate our message */
neg_ctx->status = s_pSecFn->InitializeSecurityContext(
neg_ctx->credentials,
- input_token ? neg_ctx->context : 0,
+ input_token ? neg_ctx->context : NULL,
neg_ctx->server_name,
ISC_REQ_CONFIDENTIALITY,
0,
SECURITY_NATIVE_DREP,
- input_token ? &in_buff_desc : 0,
+ input_token ? &in_buff_desc : NULL,
0,
neg_ctx->context,
&out_buff_desc,
&context_attributes,
- &lifetime);
+ &expiry);
+
+ Curl_safefree(input_token);
- if ( GSS_ERROR(neg_ctx->status) )
+ if(GSS_ERROR(neg_ctx->status))
return -1;
- if ( neg_ctx->status == SEC_I_COMPLETE_NEEDED ||
- neg_ctx->status == SEC_I_COMPLETE_AND_CONTINUE ) {
+ if(neg_ctx->status == SEC_I_COMPLETE_NEEDED ||
+ neg_ctx->status == SEC_I_COMPLETE_AND_CONTINUE) {
neg_ctx->status = s_pSecFn->CompleteAuthToken(neg_ctx->context,
&out_buff_desc);
- if ( GSS_ERROR(neg_ctx->status) )
+ if(GSS_ERROR(neg_ctx->status))
return -1;
}
struct negotiatedata *neg_ctx = proxy?&conn->data->state.proxyneg:
&conn->data->state.negotiate;
char *encoded = NULL;
- size_t len;
+ size_t len = 0;
char *userp;
+ CURLcode error;
- len = Curl_base64_encode(conn->data,
- (const char*)neg_ctx->output_token,
- neg_ctx->output_token_length,
- &encoded);
+ error = Curl_base64_encode(conn->data,
+ (const char*)neg_ctx->output_token,
+ neg_ctx->output_token_length,
+ &encoded, &len);
+ if(error)
+ return error;
- if(len == 0)
- return CURLE_OUT_OF_MEMORY;
+ if(!len)
+ return CURLE_REMOTE_ACCESS_DENIED;
- userp = aprintf("%sAuthorization: %s %s\r\n", proxy ? "Proxy-" : "",
- neg_ctx->protocol, encoded);
+ userp = aprintf("%sAuthorization: Negotiate %s\r\n", proxy ? "Proxy-" : "",
+ encoded);
- if(proxy)
+ if(proxy) {
+ Curl_safefree(conn->allocptr.proxyuserpwd);
conn->allocptr.proxyuserpwd = userp;
- else
+ }
+ else {
+ Curl_safefree(conn->allocptr.userpwd);
conn->allocptr.userpwd = userp;
+ }
free(encoded);
- Curl_cleanup_negotiate (conn->data);
return (userp == NULL) ? CURLE_OUT_OF_MEMORY : CURLE_OK;
}
static void cleanup(struct negotiatedata *neg_ctx)
{
+ /* Free our security context */
if(neg_ctx->context) {
s_pSecFn->DeleteSecurityContext(neg_ctx->context);
free(neg_ctx->context);
- neg_ctx->context = 0;
+ neg_ctx->context = NULL;
}
+ /* Free our credentials handle */
if(neg_ctx->credentials) {
s_pSecFn->FreeCredentialsHandle(neg_ctx->credentials);
free(neg_ctx->credentials);
- neg_ctx->credentials = 0;
+ neg_ctx->credentials = NULL;
}
- if(neg_ctx->output_token) {
- free(neg_ctx->output_token);
- neg_ctx->output_token = 0;
- }
+ /* Free our identity */
+ Curl_sspi_free_identity(neg_ctx->p_identity);
+ neg_ctx->p_identity = NULL;
+
+ /* Free the SPN and output token */
+ Curl_safefree(neg_ctx->server_name);
+ Curl_safefree(neg_ctx->output_token);
+
+ /* Reset any variables */
+ neg_ctx->token_max = 0;
}
void Curl_cleanup_negotiate(struct SessionHandle *data)
cleanup(&data->state.proxyneg);
}
+#endif /* !CURL_DISABLE_HTTP && USE_SPNEGO */
-#endif
-#endif
+#endif /* USE_WINDOWS_SSPI */
projects / platform / upstream / curl.git / blobdiff