/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2020, 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. * ***************************************************************************/ #include "curl_setup.h" #ifdef USE_WINDOWS_SSPI #include <curl/curl.h> #include "curl_sspi.h" #include "curl_multibyte.h" #include "system_win32.h" #include "version_win32.h" #include "warnless.h" /* The last #include files should be: */ #include "curl_memory.h" #include "memdebug.h" /* We use our own typedef here since some headers might lack these */ typedef PSecurityFunctionTable (APIENTRY *INITSECURITYINTERFACE_FN)(VOID); /* See definition of SECURITY_ENTRYPOINT in sspi.h */ #ifdef UNICODE # ifdef _WIN32_WCE # define SECURITYENTRYPOINT L"InitSecurityInterfaceW" # else # define SECURITYENTRYPOINT "InitSecurityInterfaceW" # endif #else # define SECURITYENTRYPOINT "InitSecurityInterfaceA" #endif /* Handle of security.dll or secur32.dll, depending on Windows version */ HMODULE s_hSecDll = NULL; /* Pointer to SSPI dispatch table */ PSecurityFunctionTable s_pSecFn = NULL; /* * Curl_sspi_global_init() * * This is used to load the Security Service Provider Interface (SSPI) * dynamic link library portably across all Windows versions, without * the need to directly link libcurl, nor the application using it, at * build time. * * Once this function has been executed, Windows SSPI functions can be * called through the Security Service Provider Interface dispatch table. * * Parameters: * * None. * * Returns CURLE_OK on success. */ CURLcode Curl_sspi_global_init(void) { INITSECURITYINTERFACE_FN pInitSecurityInterface; /* If security interface is not yet initialized try to do this */ if(!s_hSecDll) { /* Security Service Provider Interface (SSPI) functions are located in * security.dll on WinNT 4.0 and in secur32.dll on Win9x. Win2K and XP * have both these DLLs (security.dll forwards calls to secur32.dll) */ /* Load SSPI dll into the address space of the calling process */ if(curlx_verify_windows_version(4, 0, PLATFORM_WINNT, VERSION_EQUAL)) s_hSecDll = Curl_load_library(TEXT("security.dll")); else s_hSecDll = Curl_load_library(TEXT("secur32.dll")); if(!s_hSecDll) return CURLE_FAILED_INIT; /* Get address of the InitSecurityInterfaceA function from the SSPI dll */ pInitSecurityInterface = CURLX_FUNCTION_CAST(INITSECURITYINTERFACE_FN, (GetProcAddress(s_hSecDll, SECURITYENTRYPOINT))); if(!pInitSecurityInterface) return CURLE_FAILED_INIT; /* Get pointer to Security Service Provider Interface dispatch table */ s_pSecFn = pInitSecurityInterface(); if(!s_pSecFn) return CURLE_FAILED_INIT; } return CURLE_OK; } /* * Curl_sspi_global_cleanup() * * This deinitializes the Security Service Provider Interface from libcurl. * * Parameters: * * None. */ void Curl_sspi_global_cleanup(void) { if(s_hSecDll) { FreeLibrary(s_hSecDll); s_hSecDll = NULL; s_pSecFn = NULL; } } /* * Curl_create_sspi_identity() * * This is used to populate a SSPI identity structure based on the supplied * username and password. * * Parameters: * * userp [in] - The user name in the format User or Domain\User. * passwdp [in] - The user's password. * identity [in/out] - The identity structure. * * Returns CURLE_OK on success. */ CURLcode Curl_create_sspi_identity(const char *userp, const char *passwdp, SEC_WINNT_AUTH_IDENTITY *identity) { xcharp_u useranddomain; xcharp_u user, dup_user; xcharp_u domain, dup_domain; xcharp_u passwd, dup_passwd; size_t domlen = 0; domain.const_tchar_ptr = TEXT(""); /* Initialize the identity */ memset(identity, 0, sizeof(*identity)); useranddomain.tchar_ptr = curlx_convert_UTF8_to_tchar((char *)userp); if(!useranddomain.tchar_ptr) return CURLE_OUT_OF_MEMORY; user.const_tchar_ptr = _tcschr(useranddomain.const_tchar_ptr, TEXT('\\')); if(!user.const_tchar_ptr) user.const_tchar_ptr = _tcschr(useranddomain.const_tchar_ptr, TEXT('/')); if(user.tchar_ptr) { domain.tchar_ptr = useranddomain.tchar_ptr; domlen = user.tchar_ptr - useranddomain.tchar_ptr; user.tchar_ptr++; } else { user.tchar_ptr = useranddomain.tchar_ptr; domain.const_tchar_ptr = TEXT(""); domlen = 0; } /* Setup the identity's user and length */ dup_user.tchar_ptr = _tcsdup(user.tchar_ptr); if(!dup_user.tchar_ptr) { curlx_unicodefree(useranddomain.tchar_ptr); return CURLE_OUT_OF_MEMORY; } identity->User = dup_user.tbyte_ptr; identity->UserLength = curlx_uztoul(_tcslen(dup_user.tchar_ptr)); dup_user.tchar_ptr = NULL; /* Setup the identity's domain and length */ dup_domain.tchar_ptr = malloc(sizeof(TCHAR) * (domlen + 1)); if(!dup_domain.tchar_ptr) { curlx_unicodefree(useranddomain.tchar_ptr); return CURLE_OUT_OF_MEMORY; } _tcsncpy(dup_domain.tchar_ptr, domain.tchar_ptr, domlen); *(dup_domain.tchar_ptr + domlen) = TEXT('\0'); identity->Domain = dup_domain.tbyte_ptr; identity->DomainLength = curlx_uztoul(domlen); dup_domain.tchar_ptr = NULL; curlx_unicodefree(useranddomain.tchar_ptr); /* Setup the identity's password and length */ passwd.tchar_ptr = curlx_convert_UTF8_to_tchar((char *)passwdp); if(!passwd.tchar_ptr) return CURLE_OUT_OF_MEMORY; dup_passwd.tchar_ptr = _tcsdup(passwd.tchar_ptr); if(!dup_passwd.tchar_ptr) { curlx_unicodefree(passwd.tchar_ptr); return CURLE_OUT_OF_MEMORY; } identity->Password = dup_passwd.tbyte_ptr; identity->PasswordLength = curlx_uztoul(_tcslen(dup_passwd.tchar_ptr)); dup_passwd.tchar_ptr = NULL; curlx_unicodefree(passwd.tchar_ptr); /* Setup the identity's flags */ identity->Flags = SECFLAG_WINNT_AUTH_IDENTITY; return CURLE_OK; } /* * Curl_sspi_free_identity() * * This is used to free the contents of a SSPI identifier structure. * * Parameters: * * identity [in/out] - The identity structure. */ void Curl_sspi_free_identity(SEC_WINNT_AUTH_IDENTITY *identity) { if(identity) { Curl_safefree(identity->User); Curl_safefree(identity->Password); Curl_safefree(identity->Domain); } } #endif /* USE_WINDOWS_SSPI */