release/src/router/libcurl/lib/curl_sspi.c

   1 /***************************************************************************
   2  *                                  _   _ ____  _
   3  *  Project                     ___| | | |  _ \| |
   4  *                             / __| | | | |_) | |
   5  *                            | (__| |_| |  _ <| |___
   6  *                             \___|\___/|_| \_\_____|
   7  *
   8  * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@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 CURLcode Curl_sspi_global_init(void)
  69 {
  70   bool securityDll = FALSE;
  71   INITSECURITYINTERFACE_FN pInitSecurityInterface;
  72
  73   /* If security interface is not yet initialized try to do this */
  74   if(!s_hSecDll) {
  75     /* Security Service Provider Interface (SSPI) functions are located in
  76      * security.dll on WinNT 4.0 and in secur32.dll on Win9x. Win2K and XP
  77      * have both these DLLs (security.dll forwards calls to secur32.dll) */
  78     DWORD majorVersion = 4;
  79     DWORD platformId = VER_PLATFORM_WIN32_NT;
  80
  81 #if !defined(_WIN32_WINNT) || !defined(_WIN32_WINNT_WIN2K) || \
  82     (_WIN32_WINNT < _WIN32_WINNT_WIN2K)
  83     OSVERSIONINFO osver;
  84
  85     memset(&osver, 0, sizeof(osver));
  86     osver.dwOSVersionInfoSize = sizeof(osver);
  87
  88     /* Find out Windows version */
  89     if(!GetVersionEx(&osver))
  90       return CURLE_FAILED_INIT;
  91
  92     /* Verify the major version number == 4 and platform id == WIN_NT */
  93     if(osver.dwMajorVersion == majorVersion &&
  94        osver.dwPlatformId == platformId)
  95       securityDll = TRUE;
  96 #else
  97     ULONGLONG cm;
  98     OSVERSIONINFOEX osver;
  99
 100     memset(&osver, 0, sizeof(osver));
 101     osver.dwOSVersionInfoSize = sizeof(osver);
 102     osver.dwMajorVersion = majorVersion;
 103     osver.dwPlatformId = platformId;
 104
 105     cm = VerSetConditionMask(0, VER_MAJORVERSION, VER_EQUAL);
 106     cm = VerSetConditionMask(cm, VER_MINORVERSION, VER_GREATER_EQUAL);
 107     cm = VerSetConditionMask(cm, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
 108     cm = VerSetConditionMask(cm, VER_SERVICEPACKMINOR, VER_GREATER_EQUAL);
 109     cm = VerSetConditionMask(cm, VER_PLATFORMID, VER_EQUAL);
 110
 111     /* Verify the major version number == 4 and platform id == WIN_NT */
 112     if(VerifyVersionInfo(&osver, (VER_MAJORVERSION | VER_MINORVERSION |
 113                                   VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR |
 114                                   VER_PLATFORMID),
 115                          cm))
 116       securityDll = TRUE;
 117 #endif
 118
 119     /* Load SSPI dll into the address space of the calling process */
 120     if(securityDll)
 121       s_hSecDll = Curl_load_library(TEXT("security.dll"));
 122     else
 123       s_hSecDll = Curl_load_library(TEXT("secur32.dll"));
 124     if(!s_hSecDll)
 125       return CURLE_FAILED_INIT;
 126
 127     /* Get address of the InitSecurityInterfaceA function from the SSPI dll */
 128     pInitSecurityInterface = (INITSECURITYINTERFACE_FN)
 129       GetProcAddress(s_hSecDll, SECURITYENTRYPOINT);
 130     if(!pInitSecurityInterface)
 131       return CURLE_FAILED_INIT;
 132
 133     /* Get pointer to Security Service Provider Interface dispatch table */
 134     s_pSecFn = pInitSecurityInterface();
 135     if(!s_pSecFn)
 136       return CURLE_FAILED_INIT;
 137   }
 138
 139   return CURLE_OK;
 140 }
 141
 142 /*
 143  * Curl_sspi_global_cleanup()
 144  *
 145  * This deinitializes the Security Service Provider Interface from libcurl.
 146  */
 147
 148 void Curl_sspi_global_cleanup(void)
 149 {
 150   if(s_hSecDll) {
 151     FreeLibrary(s_hSecDll);
 152     s_hSecDll = NULL;
 153     s_pSecFn = NULL;
 154   }
 155 }
 156
 157 /*
 158  * Curl_create_sspi_identity()
 159  *
 160  * This is used to populate a SSPI identity structure based on the supplied
 161  * username and password.
 162  *
 163  * Parameters:
 164  *
 165  * userp    [in]     - The user name in the format User or Domain\User.
 166  * passdwp  [in]     - The user's password.
 167  * identity [in/out] - The identity structure.
 168  *
 169  * Returns CURLE_OK on success.
 170  */
 171 CURLcode Curl_create_sspi_identity(const char *userp, const char *passwdp,
 172                                    SEC_WINNT_AUTH_IDENTITY *identity)
 173 {
 174   xcharp_u useranddomain;
 175   xcharp_u user, dup_user;
 176   xcharp_u domain, dup_domain;
 177   xcharp_u passwd, dup_passwd;
 178   size_t domlen = 0;
 179
 180   domain.const_tchar_ptr = TEXT("");
 181
 182   /* Initialize the identity */
 183   memset(identity, 0, sizeof(*identity));
 184
 185   useranddomain.tchar_ptr = Curl_convert_UTF8_to_tchar((char *)userp);
 186   if(!useranddomain.tchar_ptr)
 187     return CURLE_OUT_OF_MEMORY;
 188
 189   user.const_tchar_ptr = _tcschr(useranddomain.const_tchar_ptr, TEXT('\\'));
 190   if(!user.const_tchar_ptr)
 191     user.const_tchar_ptr = _tcschr(useranddomain.const_tchar_ptr, TEXT('/'));
 192
 193   if(user.tchar_ptr) {
 194     domain.tchar_ptr = useranddomain.tchar_ptr;
 195     domlen = user.tchar_ptr - useranddomain.tchar_ptr;
 196     user.tchar_ptr++;
 197   }
 198   else {
 199     user.tchar_ptr = useranddomain.tchar_ptr;
 200     domain.const_tchar_ptr = TEXT("");
 201     domlen = 0;
 202   }
 203
 204   /* Setup the identity's user and length */
 205   dup_user.tchar_ptr = _tcsdup(user.tchar_ptr);
 206   if(!dup_user.tchar_ptr) {
 207     Curl_unicodefree(useranddomain.tchar_ptr);
 208     return CURLE_OUT_OF_MEMORY;
 209   }
 210   identity->User = dup_user.tbyte_ptr;
 211   identity->UserLength = curlx_uztoul(_tcslen(dup_user.tchar_ptr));
 212   dup_user.tchar_ptr = NULL;
 213
 214   /* Setup the identity's domain and length */
 215   dup_domain.tchar_ptr = malloc(sizeof(TCHAR) * (domlen + 1));
 216   if(!dup_domain.tchar_ptr) {
 217     Curl_unicodefree(useranddomain.tchar_ptr);
 218     return CURLE_OUT_OF_MEMORY;
 219   }
 220   _tcsncpy(dup_domain.tchar_ptr, domain.tchar_ptr, domlen);
 221   *(dup_domain.tchar_ptr + domlen) = TEXT('\0');
 222   identity->Domain = dup_domain.tbyte_ptr;
 223   identity->DomainLength = curlx_uztoul(domlen);
 224   dup_domain.tchar_ptr = NULL;
 225
 226   Curl_unicodefree(useranddomain.tchar_ptr);
 227
 228   /* Setup the identity's password and length */
 229   passwd.tchar_ptr = Curl_convert_UTF8_to_tchar((char *)passwdp);
 230   if(!passwd.tchar_ptr)
 231     return CURLE_OUT_OF_MEMORY;
 232   dup_passwd.tchar_ptr = _tcsdup(passwd.tchar_ptr);
 233   if(!dup_passwd.tchar_ptr) {
 234     Curl_unicodefree(passwd.tchar_ptr);
 235     return CURLE_OUT_OF_MEMORY;
 236   }
 237   identity->Password = dup_passwd.tbyte_ptr;
 238   identity->PasswordLength = curlx_uztoul(_tcslen(dup_passwd.tchar_ptr));
 239   dup_passwd.tchar_ptr = NULL;
 240
 241   Curl_unicodefree(passwd.tchar_ptr);
 242
 243   /* Setup the identity's flags */
 244   identity->Flags = SECFLAG_WINNT_AUTH_IDENTITY;
 245
 246   return CURLE_OK;
 247 }
 248
 249 void Curl_sspi_free_identity(SEC_WINNT_AUTH_IDENTITY *identity)
 250 {
 251   if(identity) {
 252     Curl_safefree(identity->User);
 253     Curl_safefree(identity->Password);
 254     Curl_safefree(identity->Domain);
 255   }
 256 }
 257
 258 #endif /* USE_WINDOWS_SSPI */