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605 lines
22 KiB
605 lines
22 KiB
/*************************************************************************** |
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* _ _ ____ _ |
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* Project ___| | | | _ \| | |
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* / __| | | | |_) | | |
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* | (__| |_| | _ <| |___ |
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* \___|\___/|_| \_\_____| |
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* |
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* Copyright (C) 2012 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al. |
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* Copyright (C) 2009, 2011, Markus Moeller, <markus_moeller@compuserve.com> |
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* |
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* This software is licensed as described in the file COPYING, which |
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* you should have received as part of this distribution. The terms |
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* are also available at https://curl.haxx.se/docs/copyright.html. |
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* |
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell |
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* copies of the Software, and permit persons to whom the Software is |
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* furnished to do so, under the terms of the COPYING file. |
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* |
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
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* KIND, either express or implied. |
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* |
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***************************************************************************/ |
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#include "curl_setup.h" |
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|
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#if defined(USE_WINDOWS_SSPI) && !defined(CURL_DISABLE_PROXY) |
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#include "urldata.h" |
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#include "sendf.h" |
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#include "connect.h" |
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#include "strerror.h" |
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#include "timeval.h" |
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#include "socks.h" |
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#include "curl_sspi.h" |
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#include "curl_multibyte.h" |
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#include "warnless.h" |
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#include "strdup.h" |
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/* The last 3 #include files should be in this order */ |
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#include "curl_printf.h" |
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#include "curl_memory.h" |
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#include "memdebug.h" |
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|
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/* |
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* Helper sspi error functions. |
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*/ |
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static int check_sspi_err(struct connectdata *conn, |
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SECURITY_STATUS status, |
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const char *function) |
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{ |
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if(status != SEC_E_OK && |
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status != SEC_I_COMPLETE_AND_CONTINUE && |
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status != SEC_I_COMPLETE_NEEDED && |
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status != SEC_I_CONTINUE_NEEDED) { |
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failf(conn->data, "SSPI error: %s failed: %s", function, |
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Curl_sspi_strerror(conn, status)); |
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return 1; |
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} |
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return 0; |
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} |
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/* This is the SSPI-using version of this function */ |
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CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex, |
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struct connectdata *conn) |
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{ |
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struct Curl_easy *data = conn->data; |
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curl_socket_t sock = conn->sock[sockindex]; |
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CURLcode code; |
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ssize_t actualread; |
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ssize_t written; |
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int result; |
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/* Needs GSS-API authentication */ |
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SECURITY_STATUS status; |
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unsigned long sspi_ret_flags = 0; |
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unsigned char gss_enc; |
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SecBuffer sspi_send_token, sspi_recv_token, sspi_w_token[3]; |
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SecBufferDesc input_desc, output_desc, wrap_desc; |
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SecPkgContext_Sizes sspi_sizes; |
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CredHandle cred_handle; |
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CtxtHandle sspi_context; |
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PCtxtHandle context_handle = NULL; |
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SecPkgCredentials_Names names; |
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TimeStamp expiry; |
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char *service_name = NULL; |
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unsigned short us_length; |
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unsigned long qop; |
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unsigned char socksreq[4]; /* room for GSS-API exchange header only */ |
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const char *service = data->set.str[STRING_PROXY_SERVICE_NAME] ? |
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data->set.str[STRING_PROXY_SERVICE_NAME] : "rcmd"; |
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const size_t service_length = strlen(service); |
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|
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/* GSS-API request looks like |
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* +----+------+-----+----------------+ |
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* |VER | MTYP | LEN | TOKEN | |
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* +----+------+----------------------+ |
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* | 1 | 1 | 2 | up to 2^16 - 1 | |
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* +----+------+-----+----------------+ |
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*/ |
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/* prepare service name */ |
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if(strchr(service, '/')) { |
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service_name = strdup(service); |
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if(!service_name) |
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return CURLE_OUT_OF_MEMORY; |
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} |
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else { |
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service_name = malloc(service_length + |
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strlen(conn->socks_proxy.host.name) + 2); |
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if(!service_name) |
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return CURLE_OUT_OF_MEMORY; |
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snprintf(service_name, service_length + |
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strlen(conn->socks_proxy.host.name)+2, "%s/%s", |
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service, conn->socks_proxy.host.name); |
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} |
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input_desc.cBuffers = 1; |
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input_desc.pBuffers = &sspi_recv_token; |
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input_desc.ulVersion = SECBUFFER_VERSION; |
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sspi_recv_token.BufferType = SECBUFFER_TOKEN; |
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sspi_recv_token.cbBuffer = 0; |
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sspi_recv_token.pvBuffer = NULL; |
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output_desc.cBuffers = 1; |
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output_desc.pBuffers = &sspi_send_token; |
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output_desc.ulVersion = SECBUFFER_VERSION; |
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sspi_send_token.BufferType = SECBUFFER_TOKEN; |
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sspi_send_token.cbBuffer = 0; |
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sspi_send_token.pvBuffer = NULL; |
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wrap_desc.cBuffers = 3; |
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wrap_desc.pBuffers = sspi_w_token; |
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wrap_desc.ulVersion = SECBUFFER_VERSION; |
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cred_handle.dwLower = 0; |
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cred_handle.dwUpper = 0; |
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status = s_pSecFn->AcquireCredentialsHandle(NULL, |
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(TCHAR *) TEXT("Kerberos"), |
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SECPKG_CRED_OUTBOUND, |
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NULL, |
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NULL, |
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NULL, |
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NULL, |
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&cred_handle, |
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&expiry); |
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if(check_sspi_err(conn, status, "AcquireCredentialsHandle")) { |
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failf(data, "Failed to acquire credentials."); |
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free(service_name); |
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s_pSecFn->FreeCredentialsHandle(&cred_handle); |
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return CURLE_COULDNT_CONNECT; |
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} |
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/* As long as we need to keep sending some context info, and there's no */ |
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/* errors, keep sending it... */ |
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for(;;) { |
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TCHAR *sname; |
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sname = Curl_convert_UTF8_to_tchar(service_name); |
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if(!sname) |
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return CURLE_OUT_OF_MEMORY; |
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status = s_pSecFn->InitializeSecurityContext(&cred_handle, |
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context_handle, |
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sname, |
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ISC_REQ_MUTUAL_AUTH | |
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ISC_REQ_ALLOCATE_MEMORY | |
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ISC_REQ_CONFIDENTIALITY | |
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ISC_REQ_REPLAY_DETECT, |
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0, |
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SECURITY_NATIVE_DREP, |
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&input_desc, |
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0, |
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&sspi_context, |
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&output_desc, |
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&sspi_ret_flags, |
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&expiry); |
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Curl_unicodefree(sname); |
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if(sspi_recv_token.pvBuffer) { |
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s_pSecFn->FreeContextBuffer(sspi_recv_token.pvBuffer); |
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sspi_recv_token.pvBuffer = NULL; |
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sspi_recv_token.cbBuffer = 0; |
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} |
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if(check_sspi_err(conn, status, "InitializeSecurityContext")) { |
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free(service_name); |
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s_pSecFn->FreeCredentialsHandle(&cred_handle); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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if(sspi_recv_token.pvBuffer) |
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s_pSecFn->FreeContextBuffer(sspi_recv_token.pvBuffer); |
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failf(data, "Failed to initialise security context."); |
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return CURLE_COULDNT_CONNECT; |
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} |
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if(sspi_send_token.cbBuffer != 0) { |
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socksreq[0] = 1; /* GSS-API subnegotiation version */ |
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socksreq[1] = 1; /* authentication message type */ |
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us_length = htons((short)sspi_send_token.cbBuffer); |
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memcpy(socksreq+2, &us_length, sizeof(short)); |
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code = Curl_write_plain(conn, sock, (char *)socksreq, 4, &written); |
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if(code || (4 != written)) { |
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failf(data, "Failed to send SSPI authentication request."); |
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free(service_name); |
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if(sspi_send_token.pvBuffer) |
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s_pSecFn->FreeContextBuffer(sspi_send_token.pvBuffer); |
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if(sspi_recv_token.pvBuffer) |
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s_pSecFn->FreeContextBuffer(sspi_recv_token.pvBuffer); |
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s_pSecFn->FreeCredentialsHandle(&cred_handle); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_COULDNT_CONNECT; |
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} |
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code = Curl_write_plain(conn, sock, (char *)sspi_send_token.pvBuffer, |
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sspi_send_token.cbBuffer, &written); |
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if(code || (sspi_send_token.cbBuffer != (size_t)written)) { |
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failf(data, "Failed to send SSPI authentication token."); |
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free(service_name); |
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if(sspi_send_token.pvBuffer) |
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s_pSecFn->FreeContextBuffer(sspi_send_token.pvBuffer); |
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if(sspi_recv_token.pvBuffer) |
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s_pSecFn->FreeContextBuffer(sspi_recv_token.pvBuffer); |
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s_pSecFn->FreeCredentialsHandle(&cred_handle); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_COULDNT_CONNECT; |
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} |
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} |
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if(sspi_send_token.pvBuffer) { |
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s_pSecFn->FreeContextBuffer(sspi_send_token.pvBuffer); |
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sspi_send_token.pvBuffer = NULL; |
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} |
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sspi_send_token.cbBuffer = 0; |
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if(sspi_recv_token.pvBuffer) { |
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s_pSecFn->FreeContextBuffer(sspi_recv_token.pvBuffer); |
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sspi_recv_token.pvBuffer = NULL; |
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} |
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sspi_recv_token.cbBuffer = 0; |
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if(status != SEC_I_CONTINUE_NEEDED) |
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break; |
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/* analyse response */ |
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/* GSS-API response looks like |
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* +----+------+-----+----------------+ |
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* |VER | MTYP | LEN | TOKEN | |
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* +----+------+----------------------+ |
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* | 1 | 1 | 2 | up to 2^16 - 1 | |
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* +----+------+-----+----------------+ |
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*/ |
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result = Curl_blockread_all(conn, sock, (char *)socksreq, 4, &actualread); |
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if(result || (actualread != 4)) { |
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failf(data, "Failed to receive SSPI authentication response."); |
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free(service_name); |
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s_pSecFn->FreeCredentialsHandle(&cred_handle); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_COULDNT_CONNECT; |
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} |
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/* ignore the first (VER) byte */ |
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if(socksreq[1] == 255) { /* status / message type */ |
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failf(data, "User was rejected by the SOCKS5 server (%u %u).", |
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(unsigned int)socksreq[0], (unsigned int)socksreq[1]); |
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free(service_name); |
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s_pSecFn->FreeCredentialsHandle(&cred_handle); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_COULDNT_CONNECT; |
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} |
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if(socksreq[1] != 1) { /* status / messgae type */ |
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failf(data, "Invalid SSPI authentication response type (%u %u).", |
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(unsigned int)socksreq[0], (unsigned int)socksreq[1]); |
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free(service_name); |
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s_pSecFn->FreeCredentialsHandle(&cred_handle); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_COULDNT_CONNECT; |
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} |
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memcpy(&us_length, socksreq+2, sizeof(short)); |
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us_length = ntohs(us_length); |
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sspi_recv_token.cbBuffer = us_length; |
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sspi_recv_token.pvBuffer = malloc(us_length); |
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if(!sspi_recv_token.pvBuffer) { |
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free(service_name); |
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s_pSecFn->FreeCredentialsHandle(&cred_handle); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_OUT_OF_MEMORY; |
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} |
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result = Curl_blockread_all(conn, sock, (char *)sspi_recv_token.pvBuffer, |
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sspi_recv_token.cbBuffer, &actualread); |
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if(result || (actualread != us_length)) { |
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failf(data, "Failed to receive SSPI authentication token."); |
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free(service_name); |
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if(sspi_recv_token.pvBuffer) |
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s_pSecFn->FreeContextBuffer(sspi_recv_token.pvBuffer); |
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s_pSecFn->FreeCredentialsHandle(&cred_handle); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_COULDNT_CONNECT; |
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} |
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context_handle = &sspi_context; |
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} |
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free(service_name); |
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/* Everything is good so far, user was authenticated! */ |
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status = s_pSecFn->QueryCredentialsAttributes(&cred_handle, |
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SECPKG_CRED_ATTR_NAMES, |
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&names); |
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s_pSecFn->FreeCredentialsHandle(&cred_handle); |
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if(check_sspi_err(conn, status, "QueryCredentialAttributes")) { |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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s_pSecFn->FreeContextBuffer(names.sUserName); |
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failf(data, "Failed to determine user name."); |
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return CURLE_COULDNT_CONNECT; |
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} |
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infof(data, "SOCKS5 server authencticated user %s with GSS-API.\n", |
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names.sUserName); |
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s_pSecFn->FreeContextBuffer(names.sUserName); |
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|
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/* Do encryption */ |
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socksreq[0] = 1; /* GSS-API subnegotiation version */ |
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socksreq[1] = 2; /* encryption message type */ |
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gss_enc = 0; /* no data protection */ |
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/* do confidentiality protection if supported */ |
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if(sspi_ret_flags & ISC_REQ_CONFIDENTIALITY) |
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gss_enc = 2; |
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/* else do integrity protection */ |
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else if(sspi_ret_flags & ISC_REQ_INTEGRITY) |
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gss_enc = 1; |
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|
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infof(data, "SOCKS5 server supports GSS-API %s data protection.\n", |
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(gss_enc==0)?"no":((gss_enc==1)?"integrity":"confidentiality") ); |
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/* force to no data protection, avoid encryption/decryption for now */ |
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gss_enc = 0; |
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/* |
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* Sending the encryption type in clear seems wrong. It should be |
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* protected with gss_seal()/gss_wrap(). See RFC1961 extract below |
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* The NEC reference implementations on which this is based is |
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* therefore at fault |
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* |
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* +------+------+------+.......................+ |
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* + ver | mtyp | len | token | |
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* +------+------+------+.......................+ |
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* + 0x01 | 0x02 | 0x02 | up to 2^16 - 1 octets | |
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* +------+------+------+.......................+ |
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* |
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* Where: |
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* |
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* - "ver" is the protocol version number, here 1 to represent the |
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* first version of the SOCKS/GSS-API protocol |
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* |
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* - "mtyp" is the message type, here 2 to represent a protection |
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* -level negotiation message |
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* |
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* - "len" is the length of the "token" field in octets |
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* |
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* - "token" is the GSS-API encapsulated protection level |
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* |
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* The token is produced by encapsulating an octet containing the |
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* required protection level using gss_seal()/gss_wrap() with conf_req |
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* set to FALSE. The token is verified using gss_unseal()/ |
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* gss_unwrap(). |
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* |
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*/ |
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if(data->set.socks5_gssapi_nec) { |
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us_length = htons((short)1); |
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memcpy(socksreq+2, &us_length, sizeof(short)); |
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} |
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else { |
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status = s_pSecFn->QueryContextAttributes(&sspi_context, |
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SECPKG_ATTR_SIZES, |
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&sspi_sizes); |
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if(check_sspi_err(conn, status, "QueryContextAttributes")) { |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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failf(data, "Failed to query security context attributes."); |
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return CURLE_COULDNT_CONNECT; |
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} |
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sspi_w_token[0].cbBuffer = sspi_sizes.cbSecurityTrailer; |
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sspi_w_token[0].BufferType = SECBUFFER_TOKEN; |
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sspi_w_token[0].pvBuffer = malloc(sspi_sizes.cbSecurityTrailer); |
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|
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if(!sspi_w_token[0].pvBuffer) { |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_OUT_OF_MEMORY; |
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} |
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sspi_w_token[1].cbBuffer = 1; |
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sspi_w_token[1].pvBuffer = malloc(1); |
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if(!sspi_w_token[1].pvBuffer) { |
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s_pSecFn->FreeContextBuffer(sspi_w_token[0].pvBuffer); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_OUT_OF_MEMORY; |
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} |
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memcpy(sspi_w_token[1].pvBuffer, &gss_enc, 1); |
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sspi_w_token[2].BufferType = SECBUFFER_PADDING; |
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sspi_w_token[2].cbBuffer = sspi_sizes.cbBlockSize; |
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sspi_w_token[2].pvBuffer = malloc(sspi_sizes.cbBlockSize); |
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if(!sspi_w_token[2].pvBuffer) { |
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s_pSecFn->FreeContextBuffer(sspi_w_token[0].pvBuffer); |
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s_pSecFn->FreeContextBuffer(sspi_w_token[1].pvBuffer); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_OUT_OF_MEMORY; |
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} |
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status = s_pSecFn->EncryptMessage(&sspi_context, |
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KERB_WRAP_NO_ENCRYPT, |
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&wrap_desc, |
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0); |
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if(check_sspi_err(conn, status, "EncryptMessage")) { |
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s_pSecFn->FreeContextBuffer(sspi_w_token[0].pvBuffer); |
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s_pSecFn->FreeContextBuffer(sspi_w_token[1].pvBuffer); |
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s_pSecFn->FreeContextBuffer(sspi_w_token[2].pvBuffer); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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failf(data, "Failed to query security context attributes."); |
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return CURLE_COULDNT_CONNECT; |
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} |
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sspi_send_token.cbBuffer = sspi_w_token[0].cbBuffer |
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+ sspi_w_token[1].cbBuffer |
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+ sspi_w_token[2].cbBuffer; |
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sspi_send_token.pvBuffer = malloc(sspi_send_token.cbBuffer); |
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if(!sspi_send_token.pvBuffer) { |
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s_pSecFn->FreeContextBuffer(sspi_w_token[0].pvBuffer); |
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s_pSecFn->FreeContextBuffer(sspi_w_token[1].pvBuffer); |
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s_pSecFn->FreeContextBuffer(sspi_w_token[2].pvBuffer); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_OUT_OF_MEMORY; |
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} |
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|
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memcpy(sspi_send_token.pvBuffer, sspi_w_token[0].pvBuffer, |
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sspi_w_token[0].cbBuffer); |
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memcpy((PUCHAR) sspi_send_token.pvBuffer +(int)sspi_w_token[0].cbBuffer, |
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sspi_w_token[1].pvBuffer, sspi_w_token[1].cbBuffer); |
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memcpy((PUCHAR) sspi_send_token.pvBuffer |
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+sspi_w_token[0].cbBuffer |
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+sspi_w_token[1].cbBuffer, |
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sspi_w_token[2].pvBuffer, sspi_w_token[2].cbBuffer); |
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|
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s_pSecFn->FreeContextBuffer(sspi_w_token[0].pvBuffer); |
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sspi_w_token[0].pvBuffer = NULL; |
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sspi_w_token[0].cbBuffer = 0; |
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s_pSecFn->FreeContextBuffer(sspi_w_token[1].pvBuffer); |
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sspi_w_token[1].pvBuffer = NULL; |
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sspi_w_token[1].cbBuffer = 0; |
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s_pSecFn->FreeContextBuffer(sspi_w_token[2].pvBuffer); |
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sspi_w_token[2].pvBuffer = NULL; |
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sspi_w_token[2].cbBuffer = 0; |
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|
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us_length = htons((short)sspi_send_token.cbBuffer); |
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memcpy(socksreq+2, &us_length, sizeof(short)); |
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} |
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|
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code = Curl_write_plain(conn, sock, (char *)socksreq, 4, &written); |
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if(code || (4 != written)) { |
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failf(data, "Failed to send SSPI encryption request."); |
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if(sspi_send_token.pvBuffer) |
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s_pSecFn->FreeContextBuffer(sspi_send_token.pvBuffer); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_COULDNT_CONNECT; |
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} |
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|
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if(data->set.socks5_gssapi_nec) { |
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memcpy(socksreq, &gss_enc, 1); |
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code = Curl_write_plain(conn, sock, (char *)socksreq, 1, &written); |
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if(code || (1 != written)) { |
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failf(data, "Failed to send SSPI encryption type."); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_COULDNT_CONNECT; |
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} |
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} |
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else { |
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code = Curl_write_plain(conn, sock, (char *)sspi_send_token.pvBuffer, |
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sspi_send_token.cbBuffer, &written); |
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if(code || (sspi_send_token.cbBuffer != (size_t)written)) { |
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failf(data, "Failed to send SSPI encryption type."); |
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if(sspi_send_token.pvBuffer) |
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s_pSecFn->FreeContextBuffer(sspi_send_token.pvBuffer); |
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s_pSecFn->DeleteSecurityContext(&sspi_context); |
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return CURLE_COULDNT_CONNECT; |
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} |
|
if(sspi_send_token.pvBuffer) |
|
s_pSecFn->FreeContextBuffer(sspi_send_token.pvBuffer); |
|
} |
|
|
|
result = Curl_blockread_all(conn, sock, (char *)socksreq, 4, &actualread); |
|
if(result || (actualread != 4)) { |
|
failf(data, "Failed to receive SSPI encryption response."); |
|
s_pSecFn->DeleteSecurityContext(&sspi_context); |
|
return CURLE_COULDNT_CONNECT; |
|
} |
|
|
|
/* ignore the first (VER) byte */ |
|
if(socksreq[1] == 255) { /* status / message type */ |
|
failf(data, "User was rejected by the SOCKS5 server (%u %u).", |
|
(unsigned int)socksreq[0], (unsigned int)socksreq[1]); |
|
s_pSecFn->DeleteSecurityContext(&sspi_context); |
|
return CURLE_COULDNT_CONNECT; |
|
} |
|
|
|
if(socksreq[1] != 2) { /* status / message type */ |
|
failf(data, "Invalid SSPI encryption response type (%u %u).", |
|
(unsigned int)socksreq[0], (unsigned int)socksreq[1]); |
|
s_pSecFn->DeleteSecurityContext(&sspi_context); |
|
return CURLE_COULDNT_CONNECT; |
|
} |
|
|
|
memcpy(&us_length, socksreq+2, sizeof(short)); |
|
us_length = ntohs(us_length); |
|
|
|
sspi_w_token[0].cbBuffer = us_length; |
|
sspi_w_token[0].pvBuffer = malloc(us_length); |
|
if(!sspi_w_token[0].pvBuffer) { |
|
s_pSecFn->DeleteSecurityContext(&sspi_context); |
|
return CURLE_OUT_OF_MEMORY; |
|
} |
|
|
|
result = Curl_blockread_all(conn, sock, (char *)sspi_w_token[0].pvBuffer, |
|
sspi_w_token[0].cbBuffer, &actualread); |
|
|
|
if(result || (actualread != us_length)) { |
|
failf(data, "Failed to receive SSPI encryption type."); |
|
s_pSecFn->FreeContextBuffer(sspi_w_token[0].pvBuffer); |
|
s_pSecFn->DeleteSecurityContext(&sspi_context); |
|
return CURLE_COULDNT_CONNECT; |
|
} |
|
|
|
|
|
if(!data->set.socks5_gssapi_nec) { |
|
wrap_desc.cBuffers = 2; |
|
sspi_w_token[0].BufferType = SECBUFFER_STREAM; |
|
sspi_w_token[1].BufferType = SECBUFFER_DATA; |
|
sspi_w_token[1].cbBuffer = 0; |
|
sspi_w_token[1].pvBuffer = NULL; |
|
|
|
status = s_pSecFn->DecryptMessage(&sspi_context, |
|
&wrap_desc, |
|
0, |
|
&qop); |
|
|
|
if(check_sspi_err(conn, status, "DecryptMessage")) { |
|
if(sspi_w_token[0].pvBuffer) |
|
s_pSecFn->FreeContextBuffer(sspi_w_token[0].pvBuffer); |
|
if(sspi_w_token[1].pvBuffer) |
|
s_pSecFn->FreeContextBuffer(sspi_w_token[1].pvBuffer); |
|
s_pSecFn->DeleteSecurityContext(&sspi_context); |
|
failf(data, "Failed to query security context attributes."); |
|
return CURLE_COULDNT_CONNECT; |
|
} |
|
|
|
if(sspi_w_token[1].cbBuffer != 1) { |
|
failf(data, "Invalid SSPI encryption response length (%lu).", |
|
(unsigned long)sspi_w_token[1].cbBuffer); |
|
if(sspi_w_token[0].pvBuffer) |
|
s_pSecFn->FreeContextBuffer(sspi_w_token[0].pvBuffer); |
|
if(sspi_w_token[1].pvBuffer) |
|
s_pSecFn->FreeContextBuffer(sspi_w_token[1].pvBuffer); |
|
s_pSecFn->DeleteSecurityContext(&sspi_context); |
|
return CURLE_COULDNT_CONNECT; |
|
} |
|
|
|
memcpy(socksreq, sspi_w_token[1].pvBuffer, sspi_w_token[1].cbBuffer); |
|
s_pSecFn->FreeContextBuffer(sspi_w_token[0].pvBuffer); |
|
s_pSecFn->FreeContextBuffer(sspi_w_token[1].pvBuffer); |
|
} |
|
else { |
|
if(sspi_w_token[0].cbBuffer != 1) { |
|
failf(data, "Invalid SSPI encryption response length (%lu).", |
|
(unsigned long)sspi_w_token[0].cbBuffer); |
|
s_pSecFn->FreeContextBuffer(sspi_w_token[0].pvBuffer); |
|
s_pSecFn->DeleteSecurityContext(&sspi_context); |
|
return CURLE_COULDNT_CONNECT; |
|
} |
|
memcpy(socksreq, sspi_w_token[0].pvBuffer, sspi_w_token[0].cbBuffer); |
|
s_pSecFn->FreeContextBuffer(sspi_w_token[0].pvBuffer); |
|
} |
|
|
|
infof(data, "SOCKS5 access with%s protection granted.\n", |
|
(socksreq[0]==0)?"out GSS-API data": |
|
((socksreq[0]==1)?" GSS-API integrity":" GSS-API confidentiality")); |
|
|
|
/* For later use if encryption is required |
|
conn->socks5_gssapi_enctype = socksreq[0]; |
|
if(socksreq[0] != 0) |
|
conn->socks5_sspi_context = sspi_context; |
|
else { |
|
s_pSecFn->DeleteSecurityContext(&sspi_context); |
|
conn->socks5_sspi_context = sspi_context; |
|
} |
|
*/ |
|
return CURLE_OK; |
|
} |
|
#endif
|
|
|