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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* 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 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.
*
***************************************************************************/
#include "curl_setup.h"
#if !defined(CURL_DISABLE_HTTP) && defined(USE_SPNEGO)
#include "urldata.h"
#include "sendf.h"
#include "http_negotiate.h"
#include "vauth/vauth.h"
/* The last 3 #include files should be in this order */
#include "curl_printf.h"
#include "curl_memory.h"
#include "memdebug.h"
CURLcode Curl_input_negotiate(struct connectdata *conn, bool proxy,
const char *header)
{
CURLcode result;
struct Curl_easy *data = conn->data;
size_t len;
/* 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;
struct auth *authp;
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;
authp = &conn->data->state.authproxy;
}
else {
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;
authp = &conn->data->state.authhost;
}
/* Not set means empty */
if(!userp)
userp = "";
if(!passwdp)
passwdp = "";
/* Obtain the input token, if any */
header += strlen("Negotiate");
while(*header && ISSPACE(*header))
header++;
len = strlen(header);
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;
}
}
/* Initialize the security context and decode our challenge */
result = Curl_auth_decode_spnego_message(data, userp, passwdp, service,
host, header, neg_ctx);
if(result)
Curl_auth_spnego_cleanup(neg_ctx);
else
/* If the status is different than 0 and we encountered no errors
it means we have to continue. 0 is the OK value for both GSSAPI
(GSS_S_COMPLETE) and SSPI (SEC_E_OK) */
authp->done = !neg_ctx->status;
return result;
}
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;
}
free(base64);
return (userp == NULL) ? CURLE_OUT_OF_MEMORY : CURLE_OK;
}
void Curl_cleanup_negotiate(struct Curl_easy *data)
{
Curl_auth_spnego_cleanup(&data->state.negotiate);
Curl_auth_spnego_cleanup(&data->state.proxyneg);
}
#endif /* !CURL_DISABLE_HTTP && USE_SPNEGO */
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