/*****************************************************************************
* libc.c: Extra libc function for some systems.
*****************************************************************************
- * Copyright (C) 2002 the VideoLAN team
+ * Copyright (C) 2002-2006 the VideoLAN team
* $Id$
*
* Authors: Jon Lech Johansen <jon-vl@nanocrew.net>
* Gildas Bazin <gbazin@videolan.org>
* Derk-Jan Hartman <hartman at videolan dot org>
* Christophe Massiot <massiot@via.ecp.fr>
+ * Rémi Denis-Courmont <rem à videolan.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
-#include <string.h> /* strdup() */
-#include <stdlib.h>
+#include <vlc/vlc.h>
+
#include <ctype.h>
-#include <vlc/vlc.h>
#undef iconv_t
#undef iconv_open
# include <unistd.h>
# include <errno.h>
# include <sys/wait.h>
+# include <fcntl.h>
+# include <sys/socket.h>
+# include <sys/poll.h>
#endif
#if defined(WIN32) || defined(UNDER_CE)
+# undef _wopendir
+# undef _wreaddir
+# undef _wclosedir
+# undef rewinddir
+# undef seekdir
+# undef telldir
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#endif
len = __MIN( len, n );
psz = (char*)malloc( len + 1 );
-
if( psz != NULL )
{
memcpy( (void*)psz, (const void*)string, len );
}
#endif
+/*****************************************************************************
+ * strnlen:
+ *****************************************************************************/
+#if !defined( HAVE_STRNLEN )
+size_t vlc_strnlen( const char *psz, size_t n )
+{
+ const char *psz_end = memchr( psz, 0, n );
+ return psz_end ? (size_t)( psz_end - psz ) : n;
+}
+#endif
+
/*****************************************************************************
* strcasecmp: compare two strings ignoring case
*****************************************************************************/
if( !psz_big || !psz_little || !*psz_little ) return p_pos;
- while( *p_pos )
+ while( *p_pos )
{
if( toupper( *p_pos ) == toupper( *psz_little ) )
{
double vlc_atof( const char *nptr )
{
double f_result;
- wchar_t *psz_tmp;
+ wchar_t *psz_tmp = NULL;
int i_len = strlen( nptr ) + 1;
psz_tmp = malloc( i_len * sizeof(wchar_t) );
+ if( !psz_tmp )
+ return NULL;
MultiByteToWideChar( CP_ACP, 0, nptr, -1, psz_tmp, i_len );
f_result = wcstod( psz_tmp, NULL );
free( psz_tmp );
/*****************************************************************************
* lldiv: returns quotient and remainder
*****************************************************************************/
-#if defined(SYS_BEOS)
+#if defined(SYS_BEOS) \
+ || (defined (__FreeBSD__) && (__FreeBSD__ < 5))
lldiv_t vlc_lldiv( long long numer, long long denom )
{
lldiv_t d;
}
#endif
+
+/**
+ * Copy a string to a sized buffer. The result is always nul-terminated
+ * (contrary to strncpy()).
+ *
+ * @param dest destination buffer
+ * @param src string to be copied
+ * @param len maximum number of characters to be copied plus one for the
+ * terminating nul.
+ *
+ * @return strlen(src)
+ */
+#ifndef HAVE_STRLCPY
+extern size_t vlc_strlcpy (char *tgt, const char *src, size_t bufsize)
+{
+ size_t length;
+
+ for (length = 1; (length < bufsize) && *src; length++)
+ *tgt++ = *src++;
+
+ if (bufsize)
+ *tgt = '\0';
+
+ while (*src++)
+ length++;
+
+ return length - 1;
+}
+#endif
+
/*****************************************************************************
* vlc_*dir_wrapper: wrapper under Windows to return the list of drive letters
* when called with an empty argument or just '\'
*****************************************************************************/
#if defined(WIN32) && !defined(UNDER_CE)
+# include <assert.h>
+
typedef struct vlc_DIR
{
- DIR *p_real_dir;
+ _WDIR *p_real_dir;
int i_drives;
- struct dirent dd_dir;
+ struct _wdirent dd_dir;
vlc_bool_t b_insert_back;
} vlc_DIR;
-void *vlc_opendir_wrapper( const char *psz_path )
+void *vlc_wopendir( const wchar_t *wpath )
{
- vlc_DIR *p_dir;
- DIR *p_real_dir;
+ vlc_DIR *p_dir = NULL;
+ _WDIR *p_real_dir = NULL;
- if ( psz_path == NULL || psz_path[0] == '\0'
- || (psz_path[0] == '\\' && psz_path[1] == '\0') )
+ if ( wpath == NULL || wpath[0] == '\0'
+ || (wcscmp (wpath, L"\\") == 0) )
{
/* Special mode to list drive letters */
p_dir = malloc( sizeof(vlc_DIR) );
+ if( !p_dir )
+ return NULL;
p_dir->p_real_dir = NULL;
p_dir->i_drives = GetLogicalDrives();
return (void *)p_dir;
}
- p_real_dir = opendir( psz_path );
+ p_real_dir = _wopendir( wpath );
if ( p_real_dir == NULL )
return NULL;
p_dir = malloc( sizeof(vlc_DIR) );
+ if( !p_dir )
+ {
+ _wclosedir( p_real_dir );
+ return NULL;
+ }
p_dir->p_real_dir = p_real_dir;
- p_dir->b_insert_back = ( psz_path[1] == ':' && psz_path[2] == '\\'
- && psz_path[3] =='\0' );
+
+ assert (wpath[0]); // wpath[1] is defined
+ p_dir->b_insert_back = !wcscmp (wpath + 1, L":\\");
return (void *)p_dir;
}
-struct dirent *vlc_readdir_wrapper( void *_p_dir )
+struct _wdirent *vlc_wreaddir( void *_p_dir )
{
vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
unsigned int i;
{
if ( p_dir->b_insert_back )
{
+ /* Adds "..", gruik! */
p_dir->dd_dir.d_ino = 0;
p_dir->dd_dir.d_reclen = 0;
p_dir->dd_dir.d_namlen = 2;
- strcpy( p_dir->dd_dir.d_name, ".." );
+ wcscpy( p_dir->dd_dir.d_name, L".." );
p_dir->b_insert_back = VLC_FALSE;
return &p_dir->dd_dir;
}
- return readdir( p_dir->p_real_dir );
+ return _wreaddir( p_dir->p_real_dir );
}
/* Drive letters mode */
if ( i >= 26 )
return NULL; /* this should not happen */
- sprintf( p_dir->dd_dir.d_name, "%c:\\", 'A' + i );
- p_dir->dd_dir.d_namlen = strlen(p_dir->dd_dir.d_name);
+ swprintf( p_dir->dd_dir.d_name, L"%c:\\", 'A' + i );
+ p_dir->dd_dir.d_namlen = wcslen(p_dir->dd_dir.d_name);
p_dir->i_drives &= ~(1UL << i);
return &p_dir->dd_dir;
}
-int vlc_closedir_wrapper( void *_p_dir )
+int vlc_wclosedir( void *_p_dir )
{
vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
+ int i_ret = 0;
if ( p_dir->p_real_dir != NULL )
- {
- int i_ret = closedir( p_dir->p_real_dir );
- free( p_dir );
- return i_ret;
- }
+ i_ret = _wclosedir( p_dir->p_real_dir );
free( p_dir );
- return 0;
+ return i_ret;
}
-#else
-void *vlc_opendir_wrapper( const char *psz_path )
+
+void vlc_rewinddir( void *_p_dir )
{
- return (void *)opendir( psz_path );
+ vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
+
+ if ( p_dir->p_real_dir != NULL )
+ _wrewinddir( p_dir->p_real_dir );
}
-struct dirent *vlc_readdir_wrapper( void *_p_dir )
+
+void vlc_seekdir( void *_p_dir, long loc)
{
- return readdir( (DIR *)_p_dir );
+ vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
+
+ if ( p_dir->p_real_dir != NULL )
+ _wseekdir( p_dir->p_real_dir, loc );
}
-int vlc_closedir_wrapper( void *_p_dir )
+
+long vlc_telldir( void *_p_dir )
{
- return closedir( (DIR *)_p_dir );
+ vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
+
+ if ( p_dir->p_real_dir != NULL )
+ return _wtelldir( p_dir->p_real_dir );
+ return 0;
}
#endif
* scandir: scan a directory alpha-sorted
*****************************************************************************/
#if !defined( HAVE_SCANDIR )
+/* FIXME: I suspect this is dead code -> utf8_scandir */
+#ifdef WIN32
+# undef opendir
+# undef readdir
+# undef closedir
+#endif
int vlc_alphasort( const struct dirent **a, const struct dirent **b )
{
return strcoll( (*a)->d_name, (*b)->d_name );
struct dirent ** pp_list;
int ret, size;
- if( !namelist || !( p_dir = vlc_opendir_wrapper( name ) ) ) return -1;
+ if( !namelist || !( p_dir = opendir( name ) ) ) return -1;
ret = 0;
pp_list = NULL;
- while( ( p_content = vlc_readdir_wrapper( p_dir ) ) )
+ while( ( p_content = readdir( p_dir ) ) )
{
if( filter && !filter( p_content ) )
{
pp_list = realloc( pp_list, ( ret + 1 ) * sizeof( struct dirent * ) );
size = sizeof( struct dirent ) + strlen( p_content->d_name ) + 1;
pp_list[ret] = malloc( size );
- memcpy( pp_list[ret], p_content, size );
- ret++;
+ if( pp_list[ret] )
+ {
+ memcpy( pp_list[ret], p_content, size );
+ ret++;
+ }
+ else
+ {
+ /* Continuing is useless when no more memory can be allocted,
+ * so better return what we have found.
+ */
+ ret = -1;
+ break;
+ }
}
- vlc_closedir_wrapper( p_dir );
+ closedir( p_dir );
if( compar )
{
}
#endif
-#if defined (WIN32) || !defined (HAVE_SHARED_LIBVLC)
+#ifdef WIN32
/*****************************************************************************
* dgettext: gettext for plugins.
*****************************************************************************/
* 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 **ppsz_argv,
- char **ppsz_env, char *psz_cwd, char *p_in, int i_in,
- char **pp_data, int *pi_data )
+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
- int pi_stdin[2];
- int pi_stdout[2];
- pid_t i_child_pid;
+# define BUFSIZE 1024
+ int fds[2], i_status;
- pipe( pi_stdin );
- pipe( pi_stdout );
-
- if ( (i_child_pid = fork()) == -1 )
- {
- msg_Err( p_object, "unable to fork (%s)", strerror(errno) );
+ if (socketpair (AF_LOCAL, SOCK_STREAM, 0, fds))
return -1;
- }
- if ( i_child_pid == 0 )
- {
- close(0);
- dup(pi_stdin[1]);
- close(pi_stdin[0]);
-
- close(1);
- dup(pi_stdout[1]);
- close(pi_stdout[0]);
+ pid_t pid = -1;
+ if ((fds[0] > 2) && (fds[1] > 2))
+ pid = fork ();
- close(2);
+ switch (pid)
+ {
+ case -1:
+ msg_Err (p_object, "unable to fork (%s)", strerror (errno));
+ close (fds[0]);
+ close (fds[1]);
+ return -1;
- if ( psz_cwd != NULL )
- chdir( psz_cwd );
- execve( ppsz_argv[0], ppsz_argv, ppsz_env );
- exit(1);
+ case 0:
+ /* NOTE:
+ * Like it or not, close can fail (and not only with EBADF)
+ */
+ if ((close (0) == 0) && (close (1) == 0) && (close (2) == 0)
+ && (dup (fds[1]) == 0) && (dup (fds[1]) == 1)
+ && (open ("/dev/null", O_RDONLY) == 2)
+ && ((psz_cwd == NULL) || (chdir (psz_cwd) == 0)))
+ execve (ppsz_argv[0], ppsz_argv, ppsz_env);
+
+ exit (1);
}
- close(pi_stdin[1]);
- close(pi_stdout[1]);
- if ( !i_in )
- close( pi_stdin[0] );
+ close (fds[1]);
*pi_data = 0;
- *pp_data = malloc( 1025 ); /* +1 for \0 */
+ if (*pp_data)
+ free (*pp_data);
+ *pp_data = NULL;
- while ( !p_object->b_die )
+ if (i_in == 0)
+ shutdown (fds[0], SHUT_WR);
+
+ while (!p_object->b_die)
{
- int i_ret, i_status;
- fd_set readfds, writefds;
- struct timeval tv;
-
- FD_ZERO( &readfds );
- FD_ZERO( &writefds );
- FD_SET( pi_stdout[0], &readfds );
- if ( i_in )
- FD_SET( pi_stdin[0], &writefds );
-
- tv.tv_sec = 0;
- tv.tv_usec = 10000;
-
- i_ret = select( pi_stdin[0] > pi_stdout[0] ? pi_stdin[0] + 1 :
- pi_stdout[0] + 1, &readfds, &writefds, NULL, &tv );
- if ( i_ret > 0 )
+ 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)
{
- if ( FD_ISSET( pi_stdout[0], &readfds ) )
- {
- ssize_t i_read = read( pi_stdout[0], &(*pp_data)[*pi_data],
- 1024 );
- if ( i_read > 0 )
- {
- *pi_data += i_read;
- *pp_data = realloc( *pp_data, *pi_data + 1025 );
- }
- }
- if ( FD_ISSET( pi_stdin[0], &writefds ) )
+ 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)
{
- ssize_t i_write = write( pi_stdin[0], p_in, __MIN(i_in, 1024) );
-
- if ( i_write > 0 )
- {
- p_in += i_write;
- i_in -= i_write;
- }
- if ( !i_in )
- close( pi_stdin[0] );
+ case -1:
+ case 0:
+ shutdown (fds[0], SHUT_RD);
+ break;
+
+ default:
+ *pi_data += val;
}
}
- if ( waitpid( i_child_pid, &i_status, WNOHANG ) == i_child_pid )
+ if (ufd[0].revents & POLLOUT)
{
- if ( WIFEXITED( i_status ) )
- {
- if ( WEXITSTATUS( i_status ) )
- {
- msg_Warn( p_object,
- "child %s returned with error code %d",
- ppsz_argv[0], WEXITSTATUS( i_status ) );
- }
- }
- else
+ ssize_t val = write (fds[0], p_in, i_in);
+ switch (val)
{
- if ( WIFSIGNALED( i_status ) )
- {
- msg_Warn( p_object,
- "child %s quit on signal %d", ppsz_argv[0],
- WTERMSIG( i_status ) );
- }
+ case -1:
+ case 0:
+ i_in = 0;
+ shutdown (fds[0], SHUT_WR);
+ break;
+
+ default:
+ i_in -= val;
+ p_in += val;
}
- if ( i_in )
- close( pi_stdin[0] );
- close( pi_stdout[0] );
- break;
}
+ }
- if ( i_ret < 0 && errno != EINTR )
- {
- msg_Warn( p_object, "select failed (%s)", strerror(errno) );
- }
+ 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 )
BOOL bFuncRetn = FALSE;
HANDLE hChildStdinRd, hChildStdinWr, hChildStdoutRd, hChildStdoutWr;
DWORD i_status;
- char *psz_cmd, *p_env, *p;
+ char *psz_cmd = NULL, *p_env = NULL, *p = NULL;
char **ppsz_parser;
int i_size;
/* 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];
/* 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 )
/* 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 )
#endif
- (*pp_data)[*pi_data] = '\0';
+ if (*pp_data == NULL)
+ return -1;
+ (*pp_data)[*pi_data] = '\0';
return 0;
}
projects / vlc / blobdiff