* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2015, 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
#ifdef USE_WINDOWS_SSPI
-#ifndef CURL_DISABLE_HTTP
+#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"
+#include "curl_printf.h"
-#define _MPRINTF_REPLACE /* use our functions only */
-#include <curl/mprintf.h>
-
-/* The last #include file should be: */
+/* The last #include files should be: */
+#include "curl_memory.h"
#include "memdebug.h"
-static int
-get_gss_name(struct connectdata *conn, bool proxy,
- struct negotiatedata *neg_ctx)
+CURLcode Curl_input_negotiate(struct connectdata *conn, bool proxy,
+ const char *header)
{
- const char* service;
- size_t length;
-
- if(proxy && !conn->proxy.name)
- /* proxy auth requested but no given proxy name, error out! */
- return -1;
-
- /* 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(neg_ctx->server_name, 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;
+ struct SessionHandle *data = conn->data;
+ BYTE *input_token = NULL;
SecBufferDesc out_buff_desc;
SecBuffer out_sec_buff;
SecBufferDesc in_buff_desc;
SecBuffer in_sec_buff;
- unsigned long context_attributes;
- TimeStamp lifetime;
- TCHAR *sname;
- int ret;
+ SECURITY_STATUS status;
+ unsigned long attrs;
+ TimeStamp expiry; /* For Windows 9x compatibility of SSPI calls */
size_t len = 0, input_token_len = 0;
- bool gss = FALSE;
- const char* protocol;
- CURLcode error;
+ CURLcode result;
- 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 = &data->state.proxyneg;
}
else {
- neg_ctx->protocol = protocol;
- neg_ctx->gss = gss;
+ userp = conn->user;
+ passwdp = conn->passwd;
+ neg_ctx = &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 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;
+ Curl_cleanup_negotiate(data);
+ return CURLE_LOGIN_DENIED;
}
- if(0 == strlen(neg_ctx->server_name)) {
- ret = get_gss_name(conn, proxy, neg_ctx);
- if(ret)
- return ret;
+ if(!neg_ctx->server_name) {
+ /* Check proxy auth requested but no given proxy name */
+ if(proxy && !conn->proxy.name)
+ return CURLE_BAD_FUNCTION_ARGUMENT;
+
+ /* Generate our SPN */
+ neg_ctx->server_name = Curl_sasl_build_spn(
+ proxy ? data->set.str[STRING_PROXY_SERVICE_NAME] :
+ data->set.str[STRING_SERVICE_NAME],
+ proxy ? conn->proxy.name : conn->host.name);
+ if(!neg_ctx->server_name)
+ return CURLE_OUT_OF_MEMORY;
}
if(!neg_ctx->output_token) {
PSecPkgInfo SecurityPackage;
- ret = s_pSecFn->QuerySecurityPackageInfo((TCHAR *) TEXT("Negotiate"),
- &SecurityPackage);
- if(ret != SEC_E_OK)
- return -1;
+ status = s_pSecFn->QuerySecurityPackageInfo((TCHAR *)
+ TEXT(SP_NAME_NEGOTIATE),
+ &SecurityPackage);
+ if(status != SEC_E_OK)
+ return CURLE_NOT_BUILT_IN;
/* 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 = 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) {
- /* first call in a new negotation, we have to acquire credentials,
- and allocate memory for the context */
+ /* 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;
+ }
+ /* We have to acquire credentials and allocate memory for the context */
neg_ctx->credentials = malloc(sizeof(CredHandle));
neg_ctx->context = malloc(sizeof(CtxtHandle));
if(!neg_ctx->credentials || !neg_ctx->context)
- return -1;
+ return CURLE_OUT_OF_MEMORY;
+
+ if(userp && *userp) {
+ /* Populate our identity structure */
+ result = Curl_create_sspi_identity(userp, passwdp, &neg_ctx->identity);
+ if(result)
+ return result;
+
+ /* 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,
- (TCHAR *) TEXT("Negotiate"),
- SECPKG_CRED_OUTBOUND, NULL, NULL,
- NULL, NULL, neg_ctx->credentials,
- &lifetime);
+ (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;
+ return CURLE_LOGIN_DENIED;
}
else {
- input_token = malloc(neg_ctx->max_token_length);
- if(!input_token)
- return -1;
-
- error = Curl_base64_decode(header,
- (unsigned char **)&input_token,
- &input_token_len);
- if(error || input_token_len == 0)
- return -1;
+ result = Curl_base64_decode(header,
+ (unsigned char **)&input_token,
+ &input_token_len);
+ if(result)
+ return result;
+
+ if(!input_token_len) {
+ infof(data,
+ "Negotiate handshake failure (empty challenge message)\n");
+
+ return CURLE_BAD_CONTENT_ENCODING;
+ }
}
- /* 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 = curlx_uztoul(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);
-
+ /* Setup the "input" security buffer if present */
if(input_token) {
- in_buff_desc.ulVersion = 0;
+ in_buff_desc.ulVersion = SECBUFFER_VERSION;
in_buff_desc.cBuffers = 1;
in_buff_desc.pBuffers = &in_sec_buff;
-
- in_sec_buff.cbBuffer = curlx_uztoul(input_token_len);
in_sec_buff.BufferType = SECBUFFER_TOKEN;
in_sec_buff.pvBuffer = input_token;
+ in_sec_buff.cbBuffer = curlx_uztoul(input_token_len);
}
- sname = Curl_convert_UTF8_to_tchar(neg_ctx->server_name);
- if(!sname)
- return CURLE_OUT_OF_MEMORY;
-
+ /* Generate our message */
neg_ctx->status = s_pSecFn->InitializeSecurityContext(
neg_ctx->credentials,
- input_token ? neg_ctx->context : 0,
- sname,
+ 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);
+ &attrs,
+ &expiry);
- Curl_unicodefree(sname);
+ free(input_token);
if(GSS_ERROR(neg_ctx->status))
- return -1;
+ return CURLE_OUT_OF_MEMORY;
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))
- return -1;
+ return CURLE_RECV_ERROR;
}
neg_ctx->output_token_length = out_sec_buff.cbBuffer;
- return 0;
+ return CURLE_OK;
}
-
CURLcode Curl_output_negotiate(struct connectdata *conn, bool proxy)
{
struct negotiatedata *neg_ctx = proxy?&conn->data->state.proxyneg:
char *encoded = NULL;
size_t len = 0;
char *userp;
- CURLcode error;
+ CURLcode result;
- error = Curl_base64_encode(conn->data,
- (const char*)neg_ctx->output_token,
- neg_ctx->output_token_length,
- &encoded, &len);
- if(error)
- return error;
+ result = Curl_base64_encode(conn->data,
+ (const char*)neg_ctx->output_token,
+ neg_ctx->output_token_length,
+ &encoded, &len);
+ if(result)
+ return result;
- if(len == 0)
+ 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);
- neg_ctx->max_token_length = 0;
+ /* 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