373 lines
12 KiB
C
373 lines
12 KiB
C
|
/***************************************************************************
|
||
|
|
* _ _ ____ _
|
||
|
|
* Project ___| | | | _ \| |
|
||
|
|
* / __| | | | |_) | |
|
||
|
|
* | (__| |_| | _ <| |___
|
||
|
|
* \___|\___/|_| \_\_____|
|
||
|
|
*
|
||
|
|
* Copyright (C) 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 https://curl.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.
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: curl
|
||
|
|
*
|
||
|
|
***************************************************************************/
|
||
|
|
|
||
|
|
#include "curl_setup.h"
|
||
|
|
|
||
|
|
#if defined(USE_WINDOWS_SSPI) && defined(USE_NTLM)
|
||
|
|
|
||
|
|
#include <curl/curl.h>
|
||
|
|
|
||
|
|
#include "vauth/vauth.h"
|
||
|
|
#include "urldata.h"
|
||
|
|
#include "curl_ntlm_core.h"
|
||
|
|
#include "warnless.h"
|
||
|
|
#include "curl_multibyte.h"
|
||
|
|
#include "sendf.h"
|
||
|
|
#include "strdup.h"
|
||
|
|
|
||
|
|
/* The last #include files should be: */
|
||
|
|
#include "curl_memory.h"
|
||
|
|
#include "memdebug.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Curl_auth_is_ntlm_supported()
|
||
|
|
*
|
||
|
|
* This is used to evaluate if NTLM is supported.
|
||
|
|
*
|
||
|
|
* Parameters: None
|
||
|
|
*
|
||
|
|
* Returns TRUE if NTLM is supported by Windows SSPI.
|
||
|
|
*/
|
||
|
|
bool Curl_auth_is_ntlm_supported(void)
|
||
|
|
{
|
||
|
|
PSecPkgInfo SecurityPackage;
|
||
|
|
SECURITY_STATUS status;
|
||
|
|
|
||
|
|
/* Query the security package for NTLM */
|
||
|
|
status = s_pSecFn->QuerySecurityPackageInfo((TCHAR *) TEXT(SP_NAME_NTLM),
|
||
|
|
&SecurityPackage);
|
||
|
|
|
||
|
|
/* Release the package buffer as it is not required anymore */
|
||
|
|
if(status == SEC_E_OK) {
|
||
|
|
s_pSecFn->FreeContextBuffer(SecurityPackage);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (status == SEC_E_OK ? TRUE : FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Curl_auth_create_ntlm_type1_message()
|
||
|
|
*
|
||
|
|
* This is used to generate an already encoded NTLM type-1 message ready for
|
||
|
|
* sending to the recipient.
|
||
|
|
*
|
||
|
|
* Parameters:
|
||
|
|
*
|
||
|
|
* data [in] - The session handle.
|
||
|
|
* userp [in] - The user name in the format User or Domain\User.
|
||
|
|
* passwdp [in] - The user's password.
|
||
|
|
* service [in] - The service type such as http, smtp, pop or imap.
|
||
|
|
* host [in] - The host name.
|
||
|
|
* ntlm [in/out] - The NTLM data struct being used and modified.
|
||
|
|
* out [out] - The result storage.
|
||
|
|
*
|
||
|
|
* Returns CURLE_OK on success.
|
||
|
|
*/
|
||
|
|
CURLcode Curl_auth_create_ntlm_type1_message(struct Curl_easy *data,
|
||
|
|
const char *userp,
|
||
|
|
const char *passwdp,
|
||
|
|
const char *service,
|
||
|
|
const char *host,
|
||
|
|
struct ntlmdata *ntlm,
|
||
|
|
struct bufref *out)
|
||
|
|
{
|
||
|
|
PSecPkgInfo SecurityPackage;
|
||
|
|
SecBuffer type_1_buf;
|
||
|
|
SecBufferDesc type_1_desc;
|
||
|
|
SECURITY_STATUS status;
|
||
|
|
unsigned long attrs;
|
||
|
|
TimeStamp expiry; /* For Windows 9x compatibility of SSPI calls */
|
||
|
|
|
||
|
|
/* Clean up any former leftovers and initialise to defaults */
|
||
|
|
Curl_auth_cleanup_ntlm(ntlm);
|
||
|
|
|
||
|
|
/* Query the security package for NTLM */
|
||
|
|
status = s_pSecFn->QuerySecurityPackageInfo((TCHAR *) TEXT(SP_NAME_NTLM),
|
||
|
|
&SecurityPackage);
|
||
|
|
if(status != SEC_E_OK) {
|
||
|
|
failf(data, "SSPI: couldn't get auth info");
|
||
|
|
return CURLE_AUTH_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
ntlm->token_max = SecurityPackage->cbMaxToken;
|
||
|
|
|
||
|
|
/* Release the package buffer as it is not required anymore */
|
||
|
|
s_pSecFn->FreeContextBuffer(SecurityPackage);
|
||
|
|
|
||
|
|
/* Allocate our output buffer */
|
||
|
|
ntlm->output_token = malloc(ntlm->token_max);
|
||
|
|
if(!ntlm->output_token)
|
||
|
|
return CURLE_OUT_OF_MEMORY;
|
||
|
|
|
||
|
|
if(userp && *userp) {
|
||
|
|
CURLcode result;
|
||
|
|
|
||
|
|
/* Populate our identity structure */
|
||
|
|
result = Curl_create_sspi_identity(userp, passwdp, &ntlm->identity);
|
||
|
|
if(result)
|
||
|
|
return result;
|
||
|
|
|
||
|
|
/* Allow proper cleanup of the identity structure */
|
||
|
|
ntlm->p_identity = &ntlm->identity;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
/* Use the current Windows user */
|
||
|
|
ntlm->p_identity = NULL;
|
||
|
|
|
||
|
|
/* Allocate our credentials handle */
|
||
|
|
ntlm->credentials = calloc(1, sizeof(CredHandle));
|
||
|
|
if(!ntlm->credentials)
|
||
|
|
return CURLE_OUT_OF_MEMORY;
|
||
|
|
|
||
|
|
/* Acquire our credentials handle */
|
||
|
|
status = s_pSecFn->AcquireCredentialsHandle(NULL,
|
||
|
|
(TCHAR *) TEXT(SP_NAME_NTLM),
|
||
|
|
SECPKG_CRED_OUTBOUND, NULL,
|
||
|
|
ntlm->p_identity, NULL, NULL,
|
||
|
|
ntlm->credentials, &expiry);
|
||
|
|
if(status != SEC_E_OK)
|
||
|
|
return CURLE_LOGIN_DENIED;
|
||
|
|
|
||
|
|
/* Allocate our new context handle */
|
||
|
|
ntlm->context = calloc(1, sizeof(CtxtHandle));
|
||
|
|
if(!ntlm->context)
|
||
|
|
return CURLE_OUT_OF_MEMORY;
|
||
|
|
|
||
|
|
ntlm->spn = Curl_auth_build_spn(service, host, NULL);
|
||
|
|
if(!ntlm->spn)
|
||
|
|
return CURLE_OUT_OF_MEMORY;
|
||
|
|
|
||
|
|
/* Setup the type-1 "output" security buffer */
|
||
|
|
type_1_desc.ulVersion = SECBUFFER_VERSION;
|
||
|
|
type_1_desc.cBuffers = 1;
|
||
|
|
type_1_desc.pBuffers = &type_1_buf;
|
||
|
|
type_1_buf.BufferType = SECBUFFER_TOKEN;
|
||
|
|
type_1_buf.pvBuffer = ntlm->output_token;
|
||
|
|
type_1_buf.cbBuffer = curlx_uztoul(ntlm->token_max);
|
||
|
|
|
||
|
|
/* Generate our type-1 message */
|
||
|
|
status = s_pSecFn->InitializeSecurityContext(ntlm->credentials, NULL,
|
||
|
|
ntlm->spn,
|
||
|
|
0, 0, SECURITY_NETWORK_DREP,
|
||
|
|
NULL, 0,
|
||
|
|
ntlm->context, &type_1_desc,
|
||
|
|
&attrs, &expiry);
|
||
|
|
if(status == SEC_I_COMPLETE_NEEDED ||
|
||
|
|
status == SEC_I_COMPLETE_AND_CONTINUE)
|
||
|
|
s_pSecFn->CompleteAuthToken(ntlm->context, &type_1_desc);
|
||
|
|
else if(status == SEC_E_INSUFFICIENT_MEMORY)
|
||
|
|
return CURLE_OUT_OF_MEMORY;
|
||
|
|
else if(status != SEC_E_OK && status != SEC_I_CONTINUE_NEEDED)
|
||
|
|
return CURLE_AUTH_ERROR;
|
||
|
|
|
||
|
|
/* Return the response. */
|
||
|
|
Curl_bufref_set(out, ntlm->output_token, type_1_buf.cbBuffer, NULL);
|
||
|
|
return CURLE_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Curl_auth_decode_ntlm_type2_message()
|
||
|
|
*
|
||
|
|
* This is used to decode an already encoded NTLM type-2 message.
|
||
|
|
*
|
||
|
|
* Parameters:
|
||
|
|
*
|
||
|
|
* data [in] - The session handle.
|
||
|
|
* type2 [in] - The type-2 message.
|
||
|
|
* ntlm [in/out] - The NTLM data struct being used and modified.
|
||
|
|
*
|
||
|
|
* Returns CURLE_OK on success.
|
||
|
|
*/
|
||
|
|
CURLcode Curl_auth_decode_ntlm_type2_message(struct Curl_easy *data,
|
||
|
|
const struct bufref *type2,
|
||
|
|
struct ntlmdata *ntlm)
|
||
|
|
{
|
||
|
|
#if defined(CURL_DISABLE_VERBOSE_STRINGS)
|
||
|
|
(void) data;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Ensure we have a valid type-2 message */
|
||
|
|
if(!Curl_bufref_len(type2)) {
|
||
|
|
infof(data, "NTLM handshake failure (empty type-2 message)");
|
||
|
|
return CURLE_BAD_CONTENT_ENCODING;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Store the challenge for later use */
|
||
|
|
ntlm->input_token = Curl_memdup0((const char *)Curl_bufref_ptr(type2),
|
||
|
|
Curl_bufref_len(type2));
|
||
|
|
if(!ntlm->input_token)
|
||
|
|
return CURLE_OUT_OF_MEMORY;
|
||
|
|
ntlm->input_token_len = Curl_bufref_len(type2);
|
||
|
|
|
||
|
|
return CURLE_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Curl_auth_create_ntlm_type3_message()
|
||
|
|
* Curl_auth_create_ntlm_type3_message()
|
||
|
|
*
|
||
|
|
* This is used to generate an already encoded NTLM type-3 message ready for
|
||
|
|
* sending to the recipient.
|
||
|
|
*
|
||
|
|
* Parameters:
|
||
|
|
*
|
||
|
|
* data [in] - The session handle.
|
||
|
|
* userp [in] - The user name in the format User or Domain\User.
|
||
|
|
* passwdp [in] - The user's password.
|
||
|
|
* ntlm [in/out] - The NTLM data struct being used and modified.
|
||
|
|
* out [out] - The result storage.
|
||
|
|
*
|
||
|
|
* Returns CURLE_OK on success.
|
||
|
|
*/
|
||
|
|
CURLcode Curl_auth_create_ntlm_type3_message(struct Curl_easy *data,
|
||
|
|
const char *userp,
|
||
|
|
const char *passwdp,
|
||
|
|
struct ntlmdata *ntlm,
|
||
|
|
struct bufref *out)
|
||
|
|
{
|
||
|
|
CURLcode result = CURLE_OK;
|
||
|
|
SecBuffer type_2_bufs[2];
|
||
|
|
SecBuffer type_3_buf;
|
||
|
|
SecBufferDesc type_2_desc;
|
||
|
|
SecBufferDesc type_3_desc;
|
||
|
|
SECURITY_STATUS status;
|
||
|
|
unsigned long attrs;
|
||
|
|
TimeStamp expiry; /* For Windows 9x compatibility of SSPI calls */
|
||
|
|
|
||
|
|
#if defined(CURL_DISABLE_VERBOSE_STRINGS)
|
||
|
|
(void) data;
|
||
|
|
#endif
|
||
|
|
(void) passwdp;
|
||
|
|
(void) userp;
|
||
|
|
|
||
|
|
/* Setup the type-2 "input" security buffer */
|
||
|
|
type_2_desc.ulVersion = SECBUFFER_VERSION;
|
||
|
|
type_2_desc.cBuffers = 1;
|
||
|
|
type_2_desc.pBuffers = &type_2_bufs[0];
|
||
|
|
type_2_bufs[0].BufferType = SECBUFFER_TOKEN;
|
||
|
|
type_2_bufs[0].pvBuffer = ntlm->input_token;
|
||
|
|
type_2_bufs[0].cbBuffer = curlx_uztoul(ntlm->input_token_len);
|
||
|
|
|
||
|
|
#ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
|
||
|
|
/* ssl context comes from schannel.
|
||
|
|
* When extended protection is used in IIS server,
|
||
|
|
* we have to pass a second SecBuffer to the SecBufferDesc
|
||
|
|
* otherwise IIS will not pass the authentication (401 response).
|
||
|
|
* Minimum supported version is Windows 7.
|
||
|
|
* https://docs.microsoft.com/en-us/security-updates
|
||
|
|
* /SecurityAdvisories/2009/973811
|
||
|
|
*/
|
||
|
|
if(ntlm->sslContext) {
|
||
|
|
SEC_CHANNEL_BINDINGS channelBindings;
|
||
|
|
SecPkgContext_Bindings pkgBindings;
|
||
|
|
pkgBindings.Bindings = &channelBindings;
|
||
|
|
status = s_pSecFn->QueryContextAttributes(
|
||
|
|
ntlm->sslContext,
|
||
|
|
SECPKG_ATTR_ENDPOINT_BINDINGS,
|
||
|
|
&pkgBindings
|
||
|
|
);
|
||
|
|
if(status == SEC_E_OK) {
|
||
|
|
type_2_desc.cBuffers++;
|
||
|
|
type_2_bufs[1].BufferType = SECBUFFER_CHANNEL_BINDINGS;
|
||
|
|
type_2_bufs[1].cbBuffer = pkgBindings.BindingsLength;
|
||
|
|
type_2_bufs[1].pvBuffer = pkgBindings.Bindings;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Setup the type-3 "output" security buffer */
|
||
|
|
type_3_desc.ulVersion = SECBUFFER_VERSION;
|
||
|
|
type_3_desc.cBuffers = 1;
|
||
|
|
type_3_desc.pBuffers = &type_3_buf;
|
||
|
|
type_3_buf.BufferType = SECBUFFER_TOKEN;
|
||
|
|
type_3_buf.pvBuffer = ntlm->output_token;
|
||
|
|
type_3_buf.cbBuffer = curlx_uztoul(ntlm->token_max);
|
||
|
|
|
||
|
|
/* Generate our type-3 message */
|
||
|
|
status = s_pSecFn->InitializeSecurityContext(ntlm->credentials,
|
||
|
|
ntlm->context,
|
||
|
|
ntlm->spn,
|
||
|
|
0, 0, SECURITY_NETWORK_DREP,
|
||
|
|
&type_2_desc,
|
||
|
|
0, ntlm->context,
|
||
|
|
&type_3_desc,
|
||
|
|
&attrs, &expiry);
|
||
|
|
if(status != SEC_E_OK) {
|
||
|
|
infof(data, "NTLM handshake failure (type-3 message): Status=%lx",
|
||
|
|
status);
|
||
|
|
|
||
|
|
if(status == SEC_E_INSUFFICIENT_MEMORY)
|
||
|
|
return CURLE_OUT_OF_MEMORY;
|
||
|
|
|
||
|
|
return CURLE_AUTH_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Return the response. */
|
||
|
|
result = Curl_bufref_memdup(out, ntlm->output_token, type_3_buf.cbBuffer);
|
||
|
|
Curl_auth_cleanup_ntlm(ntlm);
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Curl_auth_cleanup_ntlm()
|
||
|
|
*
|
||
|
|
* This is used to clean up the NTLM specific data.
|
||
|
|
*
|
||
|
|
* Parameters:
|
||
|
|
*
|
||
|
|
* ntlm [in/out] - The NTLM data struct being cleaned up.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
void Curl_auth_cleanup_ntlm(struct ntlmdata *ntlm)
|
||
|
|
{
|
||
|
|
/* Free our security context */
|
||
|
|
if(ntlm->context) {
|
||
|
|
s_pSecFn->DeleteSecurityContext(ntlm->context);
|
||
|
|
free(ntlm->context);
|
||
|
|
ntlm->context = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Free our credentials handle */
|
||
|
|
if(ntlm->credentials) {
|
||
|
|
s_pSecFn->FreeCredentialsHandle(ntlm->credentials);
|
||
|
|
free(ntlm->credentials);
|
||
|
|
ntlm->credentials = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Free our identity */
|
||
|
|
Curl_sspi_free_identity(ntlm->p_identity);
|
||
|
|
ntlm->p_identity = NULL;
|
||
|
|
|
||
|
|
/* Free the input and output tokens */
|
||
|
|
Curl_safefree(ntlm->input_token);
|
||
|
|
Curl_safefree(ntlm->output_token);
|
||
|
|
|
||
|
|
/* Reset any variables */
|
||
|
|
ntlm->token_max = 0;
|
||
|
|
|
||
|
|
Curl_safefree(ntlm->spn);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* USE_WINDOWS_SSPI && USE_NTLM */
|