# include <iconv.h>
#endif
-#ifdef HAVE_FORK
-# include <signal.h>
-# include <unistd.h>
-# include <sys/wait.h>
-# include <sys/socket.h>
-# include <sys/poll.h>
-# ifndef PF_LOCAL
-# define PF_LOCAL PF_UNIX
-# endif
-#endif
-
-#if defined(WIN32) || defined(UNDER_CE)
-# define WIN32_LEAN_AND_MEAN
-# include <windows.h>
-#endif
-
-
-
/*****************************************************************************
* Local conversion routine from ISO_6937 to UTF-8 charset. Support for this
* is still missing in libiconv, hence multiple operating systems lack it.
return b_exact;
}
-
-#undef vlc_execve
-/*************************************************************************
- * vlc_execve: Execute an external program with a given environment,
- * wait until it finishes and return its standard output
- *************************************************************************/
-int vlc_execve( vlc_object_t *p_object, int i_argc, char *const *ppsz_argv,
- char *const *ppsz_env, const char *psz_cwd,
- const char *p_in, size_t i_in,
- char **pp_data, size_t *pi_data )
-{
- (void)i_argc; // <-- hmph
-#ifdef HAVE_FORK
-# define BUFSIZE 1024
- int fds[2], i_status;
-
- if (socketpair (PF_LOCAL, SOCK_STREAM, 0, fds))
- return -1;
-
- pid_t pid = -1;
- if ((fds[0] > 2) && (fds[1] > 2))
- pid = fork ();
-
- switch (pid)
- {
- case -1:
- msg_Err (p_object, "unable to fork (%m)");
- close (fds[0]);
- close (fds[1]);
- return -1;
-
- case 0:
- {
- sigset_t set;
- sigemptyset (&set);
- pthread_sigmask (SIG_SETMASK, &set, NULL);
-
- /* NOTE:
- * Like it or not, close can fail (and not only with EBADF)
- */
- if ((dup2 (fds[1], 0) == 0) && (dup2 (fds[1], 1) == 1)
- && ((psz_cwd == NULL) || (chdir (psz_cwd) == 0)))
- execve (ppsz_argv[0], ppsz_argv, ppsz_env);
-
- _exit (EXIT_FAILURE);
- }
- }
-
- close (fds[1]);
-
- *pi_data = 0;
- if (*pp_data)
- free (*pp_data);
- *pp_data = NULL;
-
- if (i_in == 0)
- shutdown (fds[0], SHUT_WR);
-
- while (!p_object->b_die)
- {
- struct pollfd ufd[1];
- memset (ufd, 0, sizeof (ufd));
- ufd[0].fd = fds[0];
- ufd[0].events = POLLIN;
-
- if (i_in > 0)
- ufd[0].events |= POLLOUT;
-
- if (poll (ufd, 1, 10) <= 0)
- continue;
-
- if (ufd[0].revents & ~POLLOUT)
- {
- char *ptr = realloc (*pp_data, *pi_data + BUFSIZE + 1);
- if (ptr == NULL)
- break; /* safely abort */
-
- *pp_data = ptr;
-
- ssize_t val = read (fds[0], ptr + *pi_data, BUFSIZE);
- switch (val)
- {
- case -1:
- case 0:
- shutdown (fds[0], SHUT_RD);
- break;
-
- default:
- *pi_data += val;
- }
- }
-
- if (ufd[0].revents & POLLOUT)
- {
- ssize_t val = write (fds[0], p_in, i_in);
- switch (val)
- {
- case -1:
- case 0:
- i_in = 0;
- shutdown (fds[0], SHUT_WR);
- break;
-
- default:
- i_in -= val;
- p_in += val;
- }
- }
- }
-
- close (fds[0]);
-
- while (waitpid (pid, &i_status, 0) == -1);
-
- if (WIFEXITED (i_status))
- {
- i_status = WEXITSTATUS (i_status);
- if (i_status)
- msg_Warn (p_object, "child %s (PID %d) exited with error code %d",
- ppsz_argv[0], (int)pid, i_status);
- }
- else
- if (WIFSIGNALED (i_status)) // <-- this should be redumdant a check
- {
- i_status = WTERMSIG (i_status);
- msg_Warn (p_object, "child %s (PID %d) exited on signal %d (%s)",
- ppsz_argv[0], (int)pid, i_status, strsignal (i_status));
- }
-
-#elif defined( WIN32 ) && !defined( UNDER_CE )
- SECURITY_ATTRIBUTES saAttr;
- PROCESS_INFORMATION piProcInfo;
- STARTUPINFO siStartInfo;
- BOOL bFuncRetn = FALSE;
- HANDLE hChildStdinRd, hChildStdinWr, hChildStdoutRd, hChildStdoutWr;
- DWORD i_status;
- char *psz_cmd = NULL, *p_env = NULL, *p = NULL;
- char *const *ppsz_parser;
- int i_size;
-
- /* Set the bInheritHandle flag so pipe handles are inherited. */
- saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
- saAttr.bInheritHandle = TRUE;
- saAttr.lpSecurityDescriptor = NULL;
-
- /* Create a pipe for the child process's STDOUT. */
- if ( !CreatePipe( &hChildStdoutRd, &hChildStdoutWr, &saAttr, 0 ) )
- {
- msg_Err( p_object, "stdout pipe creation failed" );
- return -1;
- }
-
- /* Ensure the read handle to the pipe for STDOUT is not inherited. */
- SetHandleInformation( hChildStdoutRd, HANDLE_FLAG_INHERIT, 0 );
-
- /* Create a pipe for the child process's STDIN. */
- if ( !CreatePipe( &hChildStdinRd, &hChildStdinWr, &saAttr, 0 ) )
- {
- msg_Err( p_object, "stdin pipe creation failed" );
- return -1;
- }
-
- /* Ensure the write handle to the pipe for STDIN is not inherited. */
- SetHandleInformation( hChildStdinWr, HANDLE_FLAG_INHERIT, 0 );
-
- /* Set up members of the PROCESS_INFORMATION structure. */
- ZeroMemory( &piProcInfo, sizeof(PROCESS_INFORMATION) );
-
- /* Set up members of the STARTUPINFO structure. */
- ZeroMemory( &siStartInfo, sizeof(STARTUPINFO) );
- siStartInfo.cb = sizeof(STARTUPINFO);
- siStartInfo.hStdError = hChildStdoutWr;
- siStartInfo.hStdOutput = hChildStdoutWr;
- siStartInfo.hStdInput = hChildStdinRd;
- siStartInfo.wShowWindow = SW_HIDE;
- siStartInfo.dwFlags |= STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
-
- /* Set up the command line. */
- psz_cmd = malloc(32768);
- if( !psz_cmd )
- return -1;
- psz_cmd[0] = '\0';
- i_size = 32768;
- ppsz_parser = &ppsz_argv[0];
- while ( ppsz_parser[0] != NULL && i_size > 0 )
- {
- /* Protect the last argument with quotes ; the other arguments
- * are supposed to be already protected because they have been
- * passed as a command-line option. */
- if ( ppsz_parser[1] == NULL )
- {
- strncat( psz_cmd, "\"", i_size );
- i_size--;
- }
- strncat( psz_cmd, *ppsz_parser, i_size );
- i_size -= strlen( *ppsz_parser );
- if ( ppsz_parser[1] == NULL )
- {
- strncat( psz_cmd, "\"", i_size );
- i_size--;
- }
- strncat( psz_cmd, " ", i_size );
- i_size--;
- ppsz_parser++;
- }
-
- /* Set up the environment. */
- p = p_env = malloc(32768);
- if( !p )
- {
- free( psz_cmd );
- return -1;
- }
-
- i_size = 32768;
- ppsz_parser = &ppsz_env[0];
- while ( *ppsz_parser != NULL && i_size > 0 )
- {
- memcpy( p, *ppsz_parser,
- __MIN((int)(strlen(*ppsz_parser) + 1), i_size) );
- p += strlen(*ppsz_parser) + 1;
- i_size -= strlen(*ppsz_parser) + 1;
- ppsz_parser++;
- }
- *p = '\0';
-
- /* Create the child process. */
- bFuncRetn = CreateProcess( NULL,
- psz_cmd, // command line
- NULL, // process security attributes
- NULL, // primary thread security attributes
- TRUE, // handles are inherited
- 0, // creation flags
- p_env,
- psz_cwd,
- &siStartInfo, // STARTUPINFO pointer
- &piProcInfo ); // receives PROCESS_INFORMATION
-
- free( psz_cmd );
- free( p_env );
-
- if ( bFuncRetn == 0 )
- {
- msg_Err( p_object, "child creation failed" );
- return -1;
- }
-
- /* Read from a file and write its contents to a pipe. */
- while ( i_in > 0 && !p_object->b_die )
- {
- DWORD i_written;
- if ( !WriteFile( hChildStdinWr, p_in, i_in, &i_written, NULL ) )
- break;
- i_in -= i_written;
- p_in += i_written;
- }
-
- /* Close the pipe handle so the child process stops reading. */
- CloseHandle(hChildStdinWr);
-
- /* Close the write end of the pipe before reading from the
- * read end of the pipe. */
- CloseHandle(hChildStdoutWr);
-
- /* Read output from the child process. */
- *pi_data = 0;
- if( *pp_data )
- free( pp_data );
- *pp_data = NULL;
- *pp_data = malloc( 1025 ); /* +1 for \0 */
-
- while ( !p_object->b_die )
- {
- DWORD i_read;
- if ( !ReadFile( hChildStdoutRd, &(*pp_data)[*pi_data], 1024, &i_read,
- NULL )
- || i_read == 0 )
- break;
- *pi_data += i_read;
- *pp_data = xrealloc( *pp_data, *pi_data + 1025 );
- }
-
- while ( !p_object->b_die
- && !GetExitCodeProcess( piProcInfo.hProcess, &i_status )
- && i_status != STILL_ACTIVE )
- msleep( 10000 );
-
- CloseHandle(piProcInfo.hProcess);
- CloseHandle(piProcInfo.hThread);
-
- if ( i_status )
- msg_Warn( p_object,
- "child %s returned with error code %ld",
- ppsz_argv[0], i_status );
-
-#else
- msg_Err( p_object, "vlc_execve called but no implementation is available" );
- return -1;
-
-#endif
-
- if (*pp_data == NULL)
- return -1;
-
- (*pp_data)[*pi_data] = '\0';
- return 0;
-}
projects / vlc / commitdiff