1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel (at) haxx.se>, et al. 9 * 10 * This software is licensed as described in the file COPYING, which 11 * you should have received as part of this distribution. The terms 12 * are also available at https://curl.haxx.se/docs/copyright.html. 13 * 14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 15 * copies of the Software, and permit persons to whom the Software is 16 * furnished to do so, under the terms of the COPYING file. 17 * 18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19 * KIND, either express or implied. 20 * 21 ***************************************************************************/ 22 23 #include "curl_setup.h" 24 25 #ifdef USE_WINDOWS_SSPI 26 27 #include <curl/curl.h> 28 #include "curl_sspi.h" 29 #include "curl_multibyte.h" 30 #include "system_win32.h" 31 #include "warnless.h" 32 33 /* The last #include files should be: */ 34 #include "curl_memory.h" 35 #include "memdebug.h" 36 37 /* We use our own typedef here since some headers might lack these */ 38 typedef PSecurityFunctionTable (APIENTRY *INITSECURITYINTERFACE_FN)(VOID); 39 40 /* See definition of SECURITY_ENTRYPOINT in sspi.h */ 41 #ifdef UNICODE 42 # ifdef _WIN32_WCE 43 # define SECURITYENTRYPOINT L"InitSecurityInterfaceW" 44 # else 45 # define SECURITYENTRYPOINT "InitSecurityInterfaceW" 46 # endif 47 #else 48 # define SECURITYENTRYPOINT "InitSecurityInterfaceA" 49 #endif 50 51 /* Handle of security.dll or secur32.dll, depending on Windows version */ 52 HMODULE s_hSecDll = NULL; 53 54 /* Pointer to SSPI dispatch table */ 55 PSecurityFunctionTable s_pSecFn = NULL; 56 57 /* 58 * Curl_sspi_global_init() 59 * 60 * This is used to load the Security Service Provider Interface (SSPI) 61 * dynamic link library portably across all Windows versions, without 62 * the need to directly link libcurl, nor the application using it, at 63 * build time. 64 * 65 * Once this function has been executed, Windows SSPI functions can be 66 * called through the Security Service Provider Interface dispatch table. 67 * 68 * Parameters: 69 * 70 * None. 71 * 72 * Returns CURLE_OK on success. 73 */ 74 CURLcode Curl_sspi_global_init(void) 75 { 76 INITSECURITYINTERFACE_FN pInitSecurityInterface; 77 78 /* If security interface is not yet initialized try to do this */ 79 if(!s_hSecDll) { 80 /* Security Service Provider Interface (SSPI) functions are located in 81 * security.dll on WinNT 4.0 and in secur32.dll on Win9x. Win2K and XP 82 * have both these DLLs (security.dll forwards calls to secur32.dll) */ 83 84 /* Load SSPI dll into the address space of the calling process */ 85 if(Curl_verify_windows_version(4, 0, PLATFORM_WINNT, VERSION_EQUAL)) 86 s_hSecDll = Curl_load_library(TEXT("security.dll")); 87 else 88 s_hSecDll = Curl_load_library(TEXT("secur32.dll")); 89 if(!s_hSecDll) 90 return CURLE_FAILED_INIT; 91 92 /* Get address of the InitSecurityInterfaceA function from the SSPI dll */ 93 pInitSecurityInterface = (INITSECURITYINTERFACE_FN) 94 GetProcAddress(s_hSecDll, SECURITYENTRYPOINT); 95 if(!pInitSecurityInterface) 96 return CURLE_FAILED_INIT; 97 98 /* Get pointer to Security Service Provider Interface dispatch table */ 99 s_pSecFn = pInitSecurityInterface(); 100 if(!s_pSecFn) 101 return CURLE_FAILED_INIT; 102 } 103 104 return CURLE_OK; 105 } 106 107 /* 108 * Curl_sspi_global_cleanup() 109 * 110 * This deinitializes the Security Service Provider Interface from libcurl. 111 * 112 * Parameters: 113 * 114 * None. 115 */ 116 void Curl_sspi_global_cleanup(void) 117 { 118 if(s_hSecDll) { 119 FreeLibrary(s_hSecDll); 120 s_hSecDll = NULL; 121 s_pSecFn = NULL; 122 } 123 } 124 125 /* 126 * Curl_create_sspi_identity() 127 * 128 * This is used to populate a SSPI identity structure based on the supplied 129 * username and password. 130 * 131 * Parameters: 132 * 133 * userp [in] - The user name in the format User or Domain\User. 134 * passdwp [in] - The user's password. 135 * identity [in/out] - The identity structure. 136 * 137 * Returns CURLE_OK on success. 138 */ 139 CURLcode Curl_create_sspi_identity(const char *userp, const char *passwdp, 140 SEC_WINNT_AUTH_IDENTITY *identity) 141 { 142 xcharp_u useranddomain; 143 xcharp_u user, dup_user; 144 xcharp_u domain, dup_domain; 145 xcharp_u passwd, dup_passwd; 146 size_t domlen = 0; 147 148 domain.const_tchar_ptr = TEXT(""); 149 150 /* Initialize the identity */ 151 memset(identity, 0, sizeof(*identity)); 152 153 useranddomain.tchar_ptr = Curl_convert_UTF8_to_tchar((char *)userp); 154 if(!useranddomain.tchar_ptr) 155 return CURLE_OUT_OF_MEMORY; 156 157 user.const_tchar_ptr = _tcschr(useranddomain.const_tchar_ptr, TEXT('\\')); 158 if(!user.const_tchar_ptr) 159 user.const_tchar_ptr = _tcschr(useranddomain.const_tchar_ptr, TEXT('/')); 160 161 if(user.tchar_ptr) { 162 domain.tchar_ptr = useranddomain.tchar_ptr; 163 domlen = user.tchar_ptr - useranddomain.tchar_ptr; 164 user.tchar_ptr++; 165 } 166 else { 167 user.tchar_ptr = useranddomain.tchar_ptr; 168 domain.const_tchar_ptr = TEXT(""); 169 domlen = 0; 170 } 171 172 /* Setup the identity's user and length */ 173 dup_user.tchar_ptr = _tcsdup(user.tchar_ptr); 174 if(!dup_user.tchar_ptr) { 175 Curl_unicodefree(useranddomain.tchar_ptr); 176 return CURLE_OUT_OF_MEMORY; 177 } 178 identity->User = dup_user.tbyte_ptr; 179 identity->UserLength = curlx_uztoul(_tcslen(dup_user.tchar_ptr)); 180 dup_user.tchar_ptr = NULL; 181 182 /* Setup the identity's domain and length */ 183 dup_domain.tchar_ptr = malloc(sizeof(TCHAR) * (domlen + 1)); 184 if(!dup_domain.tchar_ptr) { 185 Curl_unicodefree(useranddomain.tchar_ptr); 186 return CURLE_OUT_OF_MEMORY; 187 } 188 _tcsncpy(dup_domain.tchar_ptr, domain.tchar_ptr, domlen); 189 *(dup_domain.tchar_ptr + domlen) = TEXT('\0'); 190 identity->Domain = dup_domain.tbyte_ptr; 191 identity->DomainLength = curlx_uztoul(domlen); 192 dup_domain.tchar_ptr = NULL; 193 194 Curl_unicodefree(useranddomain.tchar_ptr); 195 196 /* Setup the identity's password and length */ 197 passwd.tchar_ptr = Curl_convert_UTF8_to_tchar((char *)passwdp); 198 if(!passwd.tchar_ptr) 199 return CURLE_OUT_OF_MEMORY; 200 dup_passwd.tchar_ptr = _tcsdup(passwd.tchar_ptr); 201 if(!dup_passwd.tchar_ptr) { 202 Curl_unicodefree(passwd.tchar_ptr); 203 return CURLE_OUT_OF_MEMORY; 204 } 205 identity->Password = dup_passwd.tbyte_ptr; 206 identity->PasswordLength = curlx_uztoul(_tcslen(dup_passwd.tchar_ptr)); 207 dup_passwd.tchar_ptr = NULL; 208 209 Curl_unicodefree(passwd.tchar_ptr); 210 211 /* Setup the identity's flags */ 212 identity->Flags = SECFLAG_WINNT_AUTH_IDENTITY; 213 214 return CURLE_OK; 215 } 216 217 /* 218 * Curl_sspi_free_identity() 219 * 220 * This is used to free the contents of a SSPI identifier structure. 221 * 222 * Parameters: 223 * 224 * identity [in/out] - The identity structure. 225 */ 226 void Curl_sspi_free_identity(SEC_WINNT_AUTH_IDENTITY *identity) 227 { 228 if(identity) { 229 Curl_safefree(identity->User); 230 Curl_safefree(identity->Password); 231 Curl_safefree(identity->Domain); 232 } 233 } 234 235 #endif /* USE_WINDOWS_SSPI */ 236
