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libwinpr-thread: initial CreateProcessAsUser implementation

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This commit is contained in:
Marc-André Moreau 2013-09-24 13:08:29 -04:00
parent f363b93819
commit 9a124a1d60
1 changed files with 36 additions and 18 deletions
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54
winpr/libwinpr/thread/process.c
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@ -61,6 +61,9 @@
#include <winpr/tchar.h>
#include <winpr/environment.h>
#include <pwd.h>
#include <grp.h>
#include <errno.h>
#include <spawn.h>
#include <string.h>
@ -174,14 +177,12 @@ BOOL _CreateProcessExA(HANDLE hToken, DWORD dwLogonFlags,
{
pid_t pid;
int flags;
int status;
int numArgs;
LPSTR* pArgs;
char** envp;
char* filename;
WINPR_THREAD* thread;
WINPR_PROCESS* process;
posix_spawnattr_t attr;
WINPR_ACCESS_TOKEN* token;
LPTCH lpszEnvironmentBlock;
@ -193,21 +194,9 @@ BOOL _CreateProcessExA(HANDLE hToken, DWORD dwLogonFlags,
pArgs = CommandLineToArgvA(lpCommandLine, &numArgs);
flags = 0;
posix_spawnattr_init(&attr);
token = (WINPR_ACCESS_TOKEN*) hToken;
if (token)
{
}
#ifdef POSIX_SPAWN_USEVFORK
flags |= POSIX_SPAWN_USEVFORK;
#endif
posix_spawnattr_setflags(&attr, flags);
if (lpEnvironment)
{
envp = EnvironmentBlockToEnvpA(lpEnvironment);
@ -220,10 +209,41 @@ BOOL _CreateProcessExA(HANDLE hToken, DWORD dwLogonFlags,
filename = FindApplicationPath(pArgs[0]);
status = posix_spawn(&pid, filename, NULL, &attr, pArgs, envp);
/* fork and exec */
if (status != 0)
pid = fork();
if (pid < 0)
{
/* fork failure */
return FALSE;
}
if (pid == 0)
{
/* child process */
if (token)
{
if (token->GroupId)
{
setgid((gid_t) token->GroupId);
initgroups(token->Username, (gid_t) token->GroupId);
}
if (token->UserId)
setuid((uid_t) token->UserId);
}
if (execve(filename, pArgs, envp) < 0)
{
return FALSE;
}
}
else
{
/* parent process */
}
process = (WINPR_PROCESS*) malloc(sizeof(WINPR_PROCESS));
@ -261,8 +281,6 @@ BOOL _CreateProcessExA(HANDLE hToken, DWORD dwLogonFlags,
HeapFree(GetProcessHeap(), 0, pArgs);
}
posix_spawnattr_destroy(&attr);
if (lpszEnvironmentBlock)
FreeEnvironmentStrings(lpszEnvironmentBlock);