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shlwapi: Implement GetShellSecurityDescriptor and test for it.
This commit is contained in:
Andrey Turkin
Alexandre Julliard
parent
def7df305e
commit
5151c81a23
3 changed files with 254 additions and 1 deletions
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@ -4453,3 +4453,151 @@ void WINAPI SHChangeNotify(LONG wEventId, UINT uFlags, LPCVOID dwItem1, LPCVOID
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}
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fn(wEventId, uFlags, dwItem1, dwItem2);
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}
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typedef struct SHELL_USER_SID { /* according to MSDN this should be in shlobj.h... */
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SID_IDENTIFIER_AUTHORITY sidAuthority;
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DWORD dwUserGroupID;
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DWORD dwUserID;
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} SHELL_USER_SID, *PSHELL_USER_SID;
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typedef struct SHELL_USER_PERMISSION { /* ...and this should be in shlwapi.h */
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SHELL_USER_SID susID;
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DWORD dwAccessType;
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BOOL fInherit;
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DWORD dwAccessMask;
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DWORD dwInheritMask;
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DWORD dwInheritAccessMask;
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} SHELL_USER_PERMISSION, *PSHELL_USER_PERMISSION;
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/***********************************************************************
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* GetShellSecurityDescriptor [SHLWAPI.475]
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*
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* prepares SECURITY_DESCRIPTOR from a set of ACEs
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*
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* PARAMS
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* apUserPerm [I] array of pointers to SHELL_USER_PERMISSION structures,
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* each of which describes permissions to apply
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* cUserPerm [I] number of entries in apUserPerm array
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*
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* RETURNS
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* success: pointer to SECURITY_DESCRIPTOR
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* failure: NULL
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*
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* NOTES
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* Call should free returned descriptor with LocalFree
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*/
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SECURITY_DESCRIPTOR * WINAPI GetShellSecurityDescriptor(PSHELL_USER_PERMISSION *apUserPerm, int cUserPerm)
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{
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PSID *sidlist;
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PSID cur_user = NULL;
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BYTE tuUser[2000];
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DWORD acl_size;
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int sid_count, i;
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PSECURITY_DESCRIPTOR psd = NULL;
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TRACE("%p %d\n", apUserPerm, cUserPerm);
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if (apUserPerm == NULL || cUserPerm <= 0)
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return NULL;
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sidlist = HeapAlloc(GetProcessHeap(), 0, cUserPerm * sizeof(PSID));
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if (!sidlist)
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return NULL;
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acl_size = sizeof(ACL);
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for(sid_count = 0; sid_count < cUserPerm; sid_count++)
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{
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static SHELL_USER_SID null_sid = {{SECURITY_NULL_SID_AUTHORITY}, 0, 0};
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PSHELL_USER_PERMISSION perm = apUserPerm[sid_count];
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PSHELL_USER_SID sid = &perm->susID;
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PSID pSid;
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BOOL ret = TRUE;
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if (!memcmp((void*)sid, (void*)&null_sid, sizeof(SHELL_USER_SID)))
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{ /* current user's SID */
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if (!cur_user)
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{
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HANDLE Token;
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DWORD bufsize = sizeof(tuUser);
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ret = OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &Token);
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if (ret)
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{
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ret = GetTokenInformation(Token, TokenUser, (void*)tuUser, bufsize, &bufsize );
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if (ret)
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cur_user = ((PTOKEN_USER)&tuUser)->User.Sid;
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CloseHandle(Token);
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}
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}
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pSid = cur_user;
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} else if (sid->dwUserID==0) /* one sub-authority */
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ret = AllocateAndInitializeSid(&sid->sidAuthority, 1, sid->dwUserGroupID, 0,
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0, 0, 0, 0, 0, 0, &pSid);
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else
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ret = AllocateAndInitializeSid(&sid->sidAuthority, 2, sid->dwUserGroupID, sid->dwUserID,
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0, 0, 0, 0, 0, 0, &pSid);
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if (!ret)
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goto free_sids;
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sidlist[sid_count] = pSid;
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/* increment acl_size (1 ACE for non-inheritable and 2 ACEs for inheritable records */
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acl_size += (sizeof(ACCESS_ALLOWED_ACE)-sizeof(DWORD) + GetLengthSid(pSid)) * (perm->fInherit ? 2 : 1);
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}
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psd = LocalAlloc(0, sizeof(SECURITY_DESCRIPTOR) + acl_size);
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if (psd != NULL)
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{
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PACL pAcl = (PACL)(((BYTE*)psd)+sizeof(SECURITY_DESCRIPTOR));
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if (!InitializeSecurityDescriptor(psd, SECURITY_DESCRIPTOR_REVISION))
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goto error;
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if (!InitializeAcl(pAcl, acl_size, ACL_REVISION))
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goto error;
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for(i = 0; i < sid_count; i++)
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{
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PSHELL_USER_PERMISSION sup = apUserPerm[i];
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PSID sid = sidlist[i];
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switch(sup->dwAccessType)
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{
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case ACCESS_ALLOWED_ACE_TYPE:
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if (!AddAccessAllowedAce(pAcl, ACL_REVISION, sup->dwAccessMask, sid))
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goto error;
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if (sup->fInherit && !AddAccessAllowedAceEx(pAcl, ACL_REVISION,
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(BYTE)sup->dwInheritMask, sup->dwInheritAccessMask, sid))
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goto error;
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break;
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case ACCESS_DENIED_ACE_TYPE:
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if (!AddAccessDeniedAce(pAcl, ACL_REVISION, sup->dwAccessMask, sid))
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goto error;
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if (sup->fInherit && !AddAccessDeniedAceEx(pAcl, ACL_REVISION,
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(BYTE)sup->dwInheritMask, sup->dwInheritAccessMask, sid))
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goto error;
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break;
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default:
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goto error;
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}
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}
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if (!SetSecurityDescriptorDacl(psd, TRUE, pAcl, FALSE))
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goto error;
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}
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goto free_sids;
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error:
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LocalFree(psd);
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psd = NULL;
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free_sids:
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for(i = 0; i < sid_count; i++)
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{
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if (!cur_user || sidlist[i] != cur_user)
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FreeSid(sidlist[i]);
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}
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HeapFree(GetProcessHeap(), 0, sidlist);
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return psd;
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}
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@ -472,7 +472,7 @@
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472 stub -noname SHCreatePropertyBagOnProfileSelections
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473 stub -noname SHGetIniStringUTF7W
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474 stub -noname SHSetIniStringUTF7W
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475 stub -noname GetShellSecurityDescriptor
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475 stdcall -noname GetShellSecurityDescriptor(ptr long)
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476 stub -noname SHGetObjectCompatFlags
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477 stub -noname SHCreatePropertyBagOnMemory
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478 stdcall -noname IUnknown_TranslateAcceleratorIO(ptr ptr)
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@ -327,6 +327,110 @@ static void test_fdsa(void)
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HeapFree(GetProcessHeap(), 0, mem);
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}
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typedef struct SHELL_USER_SID {
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SID_IDENTIFIER_AUTHORITY sidAuthority;
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DWORD dwUserGroupID;
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DWORD dwUserID;
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} SHELL_USER_SID, *PSHELL_USER_SID;
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typedef struct SHELL_USER_PERMISSION {
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SHELL_USER_SID susID;
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DWORD dwAccessType;
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BOOL fInherit;
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DWORD dwAccessMask;
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DWORD dwInheritMask;
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DWORD dwInheritAccessMask;
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} SHELL_USER_PERMISSION, *PSHELL_USER_PERMISSION;
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static void test_GetShellSecurityDescriptor(void)
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{
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SHELL_USER_PERMISSION supCurrentUserFull = {
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{ {SECURITY_NULL_SID_AUTHORITY}, 0, 0 },
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ACCESS_ALLOWED_ACE_TYPE, FALSE,
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GENERIC_ALL, 0, 0 };
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#define MY_INHERITANCE 0xBE /* invalid value to proof behavior */
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SHELL_USER_PERMISSION supEveryoneDenied = {
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{ {SECURITY_WORLD_SID_AUTHORITY}, SECURITY_WORLD_RID, 0 },
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ACCESS_DENIED_ACE_TYPE, TRUE,
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GENERIC_WRITE, MY_INHERITANCE | 0xDEADBA00, GENERIC_READ };
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PSHELL_USER_PERMISSION rgsup[2] = {
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&supCurrentUserFull, &supEveryoneDenied,
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};
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SECURITY_DESCRIPTOR* psd;
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SECURITY_DESCRIPTOR* (WINAPI*pGetShellSecurityDescriptor)(PSHELL_USER_PERMISSION*,int);
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pGetShellSecurityDescriptor=(void*)GetProcAddress(hShlwapi,(char*)475);
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psd = pGetShellSecurityDescriptor(NULL, 2);
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ok(psd==NULL, "GetShellSecurityDescriptor should fail\n");
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psd = pGetShellSecurityDescriptor(rgsup, 0);
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ok(psd==NULL, "GetShellSecurityDescriptor should fail\n");
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psd = pGetShellSecurityDescriptor(rgsup, 2);
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ok(psd!=NULL, "GetShellSecurityDescriptor failed\n");
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if (psd!=NULL)
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{
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BOOL bHasDacl = FALSE, bDefaulted;
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PACL pAcl;
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DWORD dwRev;
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SECURITY_DESCRIPTOR_CONTROL control;
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ok(IsValidSecurityDescriptor(psd), "returned value is not valid SD\n");
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ok(GetSecurityDescriptorControl(psd, &control, &dwRev),
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"GetSecurityDescriptorControl failed with error %d\n", GetLastError());
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ok(0 == (control & SE_SELF_RELATIVE), "SD should be absolute\n");
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ok(GetSecurityDescriptorDacl(psd, &bHasDacl, &pAcl, &bDefaulted),
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"GetSecurityDescriptorDacl failed with error %d\n", GetLastError());
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ok(bHasDacl, "SD has no DACL\n");
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if (bHasDacl)
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{
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ok(!bDefaulted, "DACL should not be defaulted\n");
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ok(pAcl != NULL, "NULL DACL!\n");
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if (pAcl != NULL)
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{
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ACL_SIZE_INFORMATION asiSize;
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ok(IsValidAcl(pAcl), "DACL is not valid\n");
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ok(GetAclInformation(pAcl, &asiSize, sizeof(asiSize), AclSizeInformation),
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"GetAclInformation failed with error %d\n", GetLastError());
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ok(asiSize.AceCount == 3, "Incorrect number of ACEs: %d entries\n", asiSize.AceCount);
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if (asiSize.AceCount == 3)
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{
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ACCESS_ALLOWED_ACE *paaa; /* will use for DENIED too */
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ok(GetAce(pAcl, 0, (LPVOID*)&paaa), "GetAce failed with error %d\n", GetLastError());
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ok(paaa->Header.AceType == ACCESS_ALLOWED_ACE_TYPE,
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"Invalid ACE type %d\n", paaa->Header.AceType);
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ok(paaa->Header.AceFlags == 0, "Invalid ACE flags %x\n", paaa->Header.AceFlags);
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ok(paaa->Mask == GENERIC_ALL, "Invalid ACE mask %x\n", paaa->Mask);
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ok(GetAce(pAcl, 1, (LPVOID*)&paaa), "GetAce failed with error %d\n", GetLastError());
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ok(paaa->Header.AceType == ACCESS_DENIED_ACE_TYPE,
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"Invalid ACE type %d\n", paaa->Header.AceType);
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/* first one of two ACEs generated from inheritable entry - without inheritance */
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ok(paaa->Header.AceFlags == 0, "Invalid ACE flags %x\n", paaa->Header.AceFlags);
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ok(paaa->Mask == GENERIC_WRITE, "Invalid ACE mask %x\n", paaa->Mask);
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ok(GetAce(pAcl, 2, (LPVOID*)&paaa), "GetAce failed with error %d\n", GetLastError());
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ok(paaa->Header.AceType == ACCESS_DENIED_ACE_TYPE,
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"Invalid ACE type %d\n", paaa->Header.AceType);
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/* second ACE - with inheritance */
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ok(paaa->Header.AceFlags == MY_INHERITANCE,
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"Invalid ACE flags %x\n", paaa->Header.AceFlags);
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ok(paaa->Mask == GENERIC_READ, "Invalid ACE mask %x\n", paaa->Mask);
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}
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}
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}
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LocalFree(psd);
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}
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}
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START_TEST(ordinal)
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{
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hShlwapi = LoadLibraryA("shlwapi.dll");
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@ -345,6 +449,7 @@ START_TEST(ordinal)
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test_SHSearchMapInt();
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test_alloc_shared();
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test_fdsa();
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test_GetShellSecurityDescriptor();
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FreeLibrary(hShlwapi);
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}
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