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curl/lib/curl_sspi.c
Daniel Stenberg 4af40b3646 URLs: change all http:// URLs to https://
2016-02-03 00:19:02 +01:00

258 lines
8.0 KiB
C
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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2015, 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.haxx.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 "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.
*/
CURLcode Curl_sspi_global_init(void)
{
bool securityDll = FALSE;
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) */
DWORD majorVersion = 4;
DWORD platformId = VER_PLATFORM_WIN32_NT;
#if !defined(_WIN32_WINNT) || !defined(_WIN32_WINNT_WIN2K) || \
(_WIN32_WINNT < _WIN32_WINNT_WIN2K)
OSVERSIONINFO osver;
memset(&osver, 0, sizeof(osver));
osver.dwOSVersionInfoSize = sizeof(osver);
/* Find out Windows version */
if(!GetVersionEx(&osver))
return CURLE_FAILED_INIT;
/* Verify the major version number == 4 and platform id == WIN_NT */
if(osver.dwMajorVersion == majorVersion &&
osver.dwPlatformId == platformId)
securityDll = TRUE;
#else
ULONGLONG cm;
OSVERSIONINFOEX osver;
memset(&osver, 0, sizeof(osver));
osver.dwOSVersionInfoSize = sizeof(osver);
osver.dwMajorVersion = majorVersion;
osver.dwPlatformId = platformId;
cm = VerSetConditionMask(0, VER_MAJORVERSION, VER_EQUAL);
cm = VerSetConditionMask(cm, VER_MINORVERSION, VER_GREATER_EQUAL);
cm = VerSetConditionMask(cm, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
cm = VerSetConditionMask(cm, VER_SERVICEPACKMINOR, VER_GREATER_EQUAL);
cm = VerSetConditionMask(cm, VER_PLATFORMID, VER_EQUAL);
/* Verify the major version number == 4 and platform id == WIN_NT */
if(VerifyVersionInfo(&osver, (VER_MAJORVERSION | VER_MINORVERSION |
VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR |
VER_PLATFORMID),
cm))
securityDll = TRUE;
#endif
/* Load SSPI dll into the address space of the calling process */
if(securityDll)
s_hSecDll = LoadLibrary(TEXT("security.dll"));
else
s_hSecDll = LoadLibrary(TEXT("secur32.dll"));
if(!s_hSecDll)
return CURLE_FAILED_INIT;
/* Get address of the InitSecurityInterfaceA function from the SSPI dll */
pInitSecurityInterface = (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.
*/
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.
* passdwp [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 = Curl_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) {
Curl_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) {
Curl_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;
Curl_unicodefree(useranddomain.tchar_ptr);
/* Setup the identity's password and length */
passwd.tchar_ptr = Curl_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) {
Curl_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;
Curl_unicodefree(passwd.tchar_ptr);
/* Setup the identity's flags */
identity->Flags = SECFLAG_WINNT_AUTH_IDENTITY;
return CURLE_OK;
}
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 */
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