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Diffstat (limited to 'Utilities/cmcurl/lib/http_ntlm.c')
-rw-r--r--Utilities/cmcurl/lib/http_ntlm.c275
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diff --git a/Utilities/cmcurl/lib/http_ntlm.c b/Utilities/cmcurl/lib/http_ntlm.c
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+++ b/Utilities/cmcurl/lib/http_ntlm.c
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+/***************************************************************************
+ * _ _ ____ _
+ * 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(CURL_DISABLE_HTTP) && defined(USE_NTLM)
+
+/*
+ * NTLM details:
+ *
+ * https://davenport.sourceforge.net/ntlm.html
+ * https://www.innovation.ch/java/ntlm.html
+ */
+
+#define DEBUG_ME 0
+
+#include "urldata.h"
+#include "sendf.h"
+#include "strcase.h"
+#include "http_ntlm.h"
+#include "curl_ntlm_core.h"
+#include "curl_ntlm_wb.h"
+#include "curl_base64.h"
+#include "vauth/vauth.h"
+#include "url.h"
+
+/* SSL backend-specific #if branches in this file must be kept in the order
+ documented in curl_ntlm_core. */
+#if defined(USE_WINDOWS_SSPI)
+#include "curl_sspi.h"
+#endif
+
+/* The last 3 #include files should be in this order */
+#include "curl_printf.h"
+#include "curl_memory.h"
+#include "memdebug.h"
+
+#if DEBUG_ME
+# define DEBUG_OUT(x) x
+#else
+# define DEBUG_OUT(x) Curl_nop_stmt
+#endif
+
+CURLcode Curl_input_ntlm(struct Curl_easy *data,
+ bool proxy, /* if proxy or not */
+ const char *header) /* rest of the www-authenticate:
+ header */
+{
+ /* point to the correct struct with this */
+ struct ntlmdata *ntlm;
+ curlntlm *state;
+ CURLcode result = CURLE_OK;
+ struct connectdata *conn = data->conn;
+
+ ntlm = proxy ? &conn->proxyntlm : &conn->ntlm;
+ state = proxy ? &conn->proxy_ntlm_state : &conn->http_ntlm_state;
+
+ if(checkprefix("NTLM", header)) {
+ header += strlen("NTLM");
+
+ while(*header && ISSPACE(*header))
+ header++;
+
+ if(*header) {
+ unsigned char *hdr;
+ size_t hdrlen;
+
+ result = Curl_base64_decode(header, &hdr, &hdrlen);
+ if(!result) {
+ struct bufref hdrbuf;
+
+ Curl_bufref_init(&hdrbuf);
+ Curl_bufref_set(&hdrbuf, hdr, hdrlen, curl_free);
+ result = Curl_auth_decode_ntlm_type2_message(data, &hdrbuf, ntlm);
+ Curl_bufref_free(&hdrbuf);
+ }
+ if(result)
+ return result;
+
+ *state = NTLMSTATE_TYPE2; /* We got a type-2 message */
+ }
+ else {
+ if(*state == NTLMSTATE_LAST) {
+ infof(data, "NTLM auth restarted");
+ Curl_http_auth_cleanup_ntlm(conn);
+ }
+ else if(*state == NTLMSTATE_TYPE3) {
+ infof(data, "NTLM handshake rejected");
+ Curl_http_auth_cleanup_ntlm(conn);
+ *state = NTLMSTATE_NONE;
+ return CURLE_REMOTE_ACCESS_DENIED;
+ }
+ else if(*state >= NTLMSTATE_TYPE1) {
+ infof(data, "NTLM handshake failure (internal error)");
+ return CURLE_REMOTE_ACCESS_DENIED;
+ }
+
+ *state = NTLMSTATE_TYPE1; /* We should send away a type-1 */
+ }
+ }
+
+ return result;
+}
+
+/*
+ * This is for creating ntlm header output
+ */
+CURLcode Curl_output_ntlm(struct Curl_easy *data, bool proxy)
+{
+ char *base64 = NULL;
+ size_t len = 0;
+ CURLcode result = CURLE_OK;
+ struct bufref ntlmmsg;
+
+ /* point to the address of the pointer that holds the string to send to the
+ server, which is for a plain host or for an HTTP proxy */
+ char **allocuserpwd;
+
+ /* point to the username, password, service and host */
+ const char *userp;
+ const char *passwdp;
+ const char *service = NULL;
+ const char *hostname = NULL;
+
+ /* point to the correct struct with this */
+ struct ntlmdata *ntlm;
+ curlntlm *state;
+ struct auth *authp;
+ struct connectdata *conn = data->conn;
+
+ DEBUGASSERT(conn);
+ DEBUGASSERT(data);
+
+ if(proxy) {
+#ifndef CURL_DISABLE_PROXY
+ allocuserpwd = &data->state.aptr.proxyuserpwd;
+ userp = data->state.aptr.proxyuser;
+ passwdp = data->state.aptr.proxypasswd;
+ service = data->set.str[STRING_PROXY_SERVICE_NAME] ?
+ data->set.str[STRING_PROXY_SERVICE_NAME] : "HTTP";
+ hostname = conn->http_proxy.host.name;
+ ntlm = &conn->proxyntlm;
+ state = &conn->proxy_ntlm_state;
+ authp = &data->state.authproxy;
+#else
+ return CURLE_NOT_BUILT_IN;
+#endif
+ }
+ else {
+ allocuserpwd = &data->state.aptr.userpwd;
+ userp = data->state.aptr.user;
+ passwdp = data->state.aptr.passwd;
+ service = data->set.str[STRING_SERVICE_NAME] ?
+ data->set.str[STRING_SERVICE_NAME] : "HTTP";
+ hostname = conn->host.name;
+ ntlm = &conn->ntlm;
+ state = &conn->http_ntlm_state;
+ authp = &data->state.authhost;
+ }
+ authp->done = FALSE;
+
+ /* not set means empty */
+ if(!userp)
+ userp = "";
+
+ if(!passwdp)
+ passwdp = "";
+
+#ifdef USE_WINDOWS_SSPI
+ if(!s_hSecDll) {
+ /* not thread safe and leaks - use curl_global_init() to avoid */
+ CURLcode err = Curl_sspi_global_init();
+ if(!s_hSecDll)
+ return err;
+ }
+#ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
+ ntlm->sslContext = conn->sslContext;
+#endif
+#endif
+
+ Curl_bufref_init(&ntlmmsg);
+
+ /* connection is already authenticated, don't send a header in future
+ * requests so go directly to NTLMSTATE_LAST */
+ if(*state == NTLMSTATE_TYPE3)
+ *state = NTLMSTATE_LAST;
+
+ switch(*state) {
+ case NTLMSTATE_TYPE1:
+ default: /* for the weird cases we (re)start here */
+ /* Create a type-1 message */
+ result = Curl_auth_create_ntlm_type1_message(data, userp, passwdp,
+ service, hostname,
+ ntlm, &ntlmmsg);
+ if(!result) {
+ DEBUGASSERT(Curl_bufref_len(&ntlmmsg) != 0);
+ result = Curl_base64_encode((const char *) Curl_bufref_ptr(&ntlmmsg),
+ Curl_bufref_len(&ntlmmsg), &base64, &len);
+ if(!result) {
+ free(*allocuserpwd);
+ *allocuserpwd = aprintf("%sAuthorization: NTLM %s\r\n",
+ proxy ? "Proxy-" : "",
+ base64);
+ free(base64);
+ if(!*allocuserpwd)
+ result = CURLE_OUT_OF_MEMORY;
+ }
+ }
+ break;
+
+ case NTLMSTATE_TYPE2:
+ /* We already received the type-2 message, create a type-3 message */
+ result = Curl_auth_create_ntlm_type3_message(data, userp, passwdp,
+ ntlm, &ntlmmsg);
+ if(!result && Curl_bufref_len(&ntlmmsg)) {
+ result = Curl_base64_encode((const char *) Curl_bufref_ptr(&ntlmmsg),
+ Curl_bufref_len(&ntlmmsg), &base64, &len);
+ if(!result) {
+ free(*allocuserpwd);
+ *allocuserpwd = aprintf("%sAuthorization: NTLM %s\r\n",
+ proxy ? "Proxy-" : "",
+ base64);
+ free(base64);
+ if(!*allocuserpwd)
+ result = CURLE_OUT_OF_MEMORY;
+ else {
+ *state = NTLMSTATE_TYPE3; /* we send a type-3 */
+ authp->done = TRUE;
+ }
+ }
+ }
+ break;
+
+ case NTLMSTATE_LAST:
+ Curl_safefree(*allocuserpwd);
+ authp->done = TRUE;
+ break;
+ }
+ Curl_bufref_free(&ntlmmsg);
+
+ return result;
+}
+
+void Curl_http_auth_cleanup_ntlm(struct connectdata *conn)
+{
+ Curl_auth_cleanup_ntlm(&conn->ntlm);
+ Curl_auth_cleanup_ntlm(&conn->proxyntlm);
+
+#if defined(NTLM_WB_ENABLED)
+ Curl_http_auth_cleanup_ntlm_wb(conn);
+#endif
+}
+
+#endif /* !CURL_DISABLE_HTTP && USE_NTLM */
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