Improve error reporting. Slight refactoring.

2005-08-26  Tor Lillqvist  <tml@novell.com>

	* glib/gspawn-win32.c: Improve error reporting. Slight refactoring.
This commit is contained in:
Tor Lillqvist 2005-08-26 01:43:11 +00:00 committed by Tor Lillqvist
parent 41e833ae4c
commit 4362cb6f26

View File

@ -108,6 +108,60 @@ enum {
ARG_COUNT = ARG_PROGRAM
};
static gchar *
protect_argv_string (const gchar *string)
{
const gchar *p = string;
gchar *retval, *q;
gint len = 0;
gboolean need_dblquotes = FALSE;
while (*p)
{
if (*p == ' ' || *p == '\t')
need_dblquotes = TRUE;
else if (*p == '"')
len++;
else if (*p == '\\')
{
const gchar *pp = p;
while (*pp && *pp == '\\')
pp++;
if (*pp == '"')
len++;
}
len++;
p++;
}
q = retval = g_malloc (len + need_dblquotes*2 + 1);
p = string;
if (need_dblquotes)
*q++ = '"';
while (*p)
{
if (*p == '"')
*q++ = '\\';
else if (*p == '\\')
{
const gchar *pp = p;
while (*pp && *pp == '\\')
pp++;
if (*pp == '"')
*q++ = '\\';
}
*q++ = *p;
p++;
}
if (need_dblquotes)
*q++ = '"';
*q++ = '\0';
return retval;
}
static gint
protect_argv (gchar **argv,
gchar ***new_argv)
@ -131,55 +185,8 @@ protect_argv (gchar **argv,
* without any quoting.
*/
for (i = 0; i < argc; i++)
{
gchar *p = argv[i];
gchar *q;
gint len = 0;
gboolean need_dblquotes = FALSE;
while (*p)
{
if (*p == ' ' || *p == '\t')
need_dblquotes = TRUE;
else if (*p == '"')
len++;
else if (*p == '\\')
{
gchar *pp = p;
while (*pp && *pp == '\\')
pp++;
if (*pp == '"')
len++;
}
len++;
p++;
}
(*new_argv)[i] = protect_argv_string (argv[i]);
q = (*new_argv)[i] = g_malloc (len + need_dblquotes*2 + 1);
p = argv[i];
if (need_dblquotes)
*q++ = '"';
while (*p)
{
if (*p == '"')
*q++ = '\\';
else if (*p == '\\')
{
gchar *pp = p;
while (*pp && *pp == '\\')
pp++;
if (*pp == '"')
*q++ = '\\';
}
*q++ = *p;
p++;
}
if (need_dblquotes)
*q++ = '"';
*q++ = '\0';
}
(*new_argv)[argc] = NULL;
return argc;
@ -265,9 +272,7 @@ read_data (GString *str,
goto again;
else if (giostatus == G_IO_STATUS_ERROR)
{
g_set_error (error,
G_SPAWN_ERROR,
G_SPAWN_ERROR_READ,
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_READ,
_("Failed to read data from child process"));
return READ_FAILED;
@ -282,9 +287,7 @@ make_pipe (gint p[2],
{
if (pipe (p) < 0)
{
g_set_error (error,
G_SPAWN_ERROR,
G_SPAWN_ERROR_FAILED,
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Failed to create pipe for communicating with child process (%s)"),
g_strerror (errno));
return FALSE;
@ -322,9 +325,7 @@ read_helper_report (int fd,
{
/* Some weird shit happened, bail out */
g_set_error (error,
G_SPAWN_ERROR,
G_SPAWN_ERROR_FAILED,
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Failed to read from child pipe (%s)"),
g_strerror (errno));
@ -350,17 +351,13 @@ set_child_error (gint report[2],
switch (report[0])
{
case CHILD_CHDIR_FAILED:
g_set_error (error,
G_SPAWN_ERROR,
G_SPAWN_ERROR_CHDIR,
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_CHDIR,
_("Failed to change to directory '%s' (%s)"),
working_directory,
g_strerror (report[1]));
break;
case CHILD_SPAWN_FAILED:
g_set_error (error,
G_SPAWN_ERROR,
G_SPAWN_ERROR_FAILED,
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Failed to execute child process (%s)"),
g_strerror (report[1]));
break;
@ -369,11 +366,15 @@ set_child_error (gint report[2],
}
}
static wchar_t **
utf8_charv_to_wcharv (gchar **utf8_charv)
static gboolean
utf8_charv_to_wcharv (char **utf8_charv,
wchar_t ***wcharv,
int *error_index,
GError **error)
{
wchar_t **retval = NULL;
*wcharv = NULL;
if (utf8_charv != NULL)
{
int n = 0, i;
@ -383,17 +384,34 @@ utf8_charv_to_wcharv (gchar **utf8_charv)
retval = g_new (wchar_t *, n + 1);
for (i = 0; i < n; i++)
retval[i] = g_utf8_to_utf16 (utf8_charv[i], -1, NULL, NULL, NULL);
{
retval[i] = g_utf8_to_utf16 (utf8_charv[i], -1, NULL, NULL, error);
if (retval[i] == NULL)
{
if (error_index)
*error_index = i;
while (i)
g_free (retval[--i]);
g_free (retval);
return FALSE;
}
}
retval[n] = NULL;
}
return retval;
*wcharv = retval;
return TRUE;
}
static char **
utf8_charv_to_cp_charv (gchar **utf8_charv)
static gboolean
utf8_charv_to_cp_charv (char **utf8_charv,
gchar ***cp_charv,
int *error_index,
GError **error)
{
char **retval = NULL;
*cp_charv = NULL;
if (utf8_charv != NULL)
{
int n = 0, i;
@ -403,10 +421,184 @@ utf8_charv_to_cp_charv (gchar **utf8_charv)
retval = g_new (char *, n + 1);
for (i = 0; i < n; i++)
retval[i] = g_locale_from_utf8 (utf8_charv[i], -1, NULL, NULL, NULL);
{
retval[i] = g_locale_from_utf8 (utf8_charv[i], -1, NULL, NULL, error);
if (retval[i] == NULL)
{
if (error_index)
*error_index = i;
while (i)
g_free (retval[--i]);
g_free (retval);
return FALSE;
}
}
retval[n] = NULL;
}
return retval;
*cp_charv = retval;
return TRUE;
}
static gboolean
do_spawn_directly (gboolean dont_wait,
gboolean dont_return_handle,
GSpawnFlags flags,
gchar **argv,
char **envp,
char **protected_argv,
GSpawnChildSetupFunc child_setup,
gpointer user_data,
GPid *child_handle,
gint *exit_status,
GError **error)
{
int mode = dont_wait ? P_NOWAIT : P_WAIT;
char **new_argv;
int rc = -1;
int saved_errno;
GError *conv_error = NULL;
gint conv_error_index;
new_argv = (flags & G_SPAWN_FILE_AND_ARGV_ZERO) ? protected_argv + 1 : protected_argv;
if (G_WIN32_HAVE_WIDECHAR_API ())
{
wchar_t *wargv0, **wargv, **wenvp;
wargv0 = g_utf8_to_utf16 (argv[0], -1, NULL, NULL, &conv_error);
if (wargv0 == NULL)
{
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Invalid program name: %s"),
conv_error->message);
g_error_free (conv_error);
return FALSE;
}
if (!utf8_charv_to_wcharv (new_argv, &wargv, &conv_error_index, &conv_error))
{
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Invalid string in argument vector at %d: %s"),
conv_error_index, conv_error->message);
g_error_free (conv_error);
g_free (wargv0);
return FALSE;
}
if (!utf8_charv_to_wcharv (envp, &wenvp, NULL, &conv_error))
{
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Invalid string in environment: %s"),
conv_error->message);
g_error_free (conv_error);
g_free (wargv0);
g_strfreev ((gchar **) wargv);
return FALSE;
}
if (child_setup)
(* child_setup) (user_data);
if (flags & G_SPAWN_SEARCH_PATH)
if (wenvp != NULL)
rc = _wspawnvpe (mode, wargv0, (const wchar_t **) wargv, (const wchar_t **) wenvp);
else
rc = _wspawnvp (mode, wargv0, (const wchar_t **) wargv);
else
if (wenvp != NULL)
rc = _wspawnve (mode, wargv0, (const wchar_t **) wargv, (const wchar_t **) wenvp);
else
rc = _wspawnv (mode, wargv0, (const wchar_t **) wargv);
g_free (wargv0);
g_strfreev ((gchar **) wargv);
g_strfreev ((gchar **) wenvp);
}
else
{
char *cpargv0, **cpargv, **cpenvp;
cpargv0 = g_locale_from_utf8 (argv[0], -1, NULL, NULL, &conv_error);
if (cpargv0 == NULL)
{
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Invalid program name: %s"),
conv_error->message);
g_error_free (conv_error);
return FALSE;
}
if (!utf8_charv_to_cp_charv (new_argv, &cpargv, &conv_error_index, &conv_error))
{
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Invalid string in argument vector at %d: %s"),
conv_error_index, conv_error->message);
g_error_free (conv_error);
g_free (cpargv0);
return FALSE;
}
if (!utf8_charv_to_cp_charv (envp, &cpenvp, NULL, &conv_error))
{
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Invalid string in environment: %s"),
conv_error->message);
g_error_free (conv_error);
g_free (cpargv0);
g_strfreev (cpargv);
return FALSE;
}
if (child_setup)
(* child_setup) (user_data);
if (flags & G_SPAWN_SEARCH_PATH)
if (cpenvp != NULL)
rc = spawnvpe (mode, cpargv0, (const char **) cpargv, (const char **) cpenvp);
else
rc = spawnvp (mode, cpargv0, (const char **) cpargv);
else
if (envp != NULL)
rc = spawnve (mode, cpargv0, (const char **) cpargv, (const char **) cpenvp);
else
rc = spawnv (mode, cpargv0, (const char **) cpargv);
g_free (cpargv0);
g_strfreev (cpargv);
g_strfreev (cpenvp);
}
saved_errno = errno;
if (rc == -1 && saved_errno != 0)
{
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Failed to execute child process (%s)"),
g_strerror (saved_errno));
return FALSE;
}
if (dont_wait)
{
if (child_handle && !dont_return_handle)
*child_handle = (GPid) rc;
else
{
CloseHandle ((HANDLE) rc);
if (child_handle)
*child_handle = 0;
}
}
else if (exit_status)
*exit_status = rc;
return TRUE;
}
static gboolean
@ -438,9 +630,18 @@ do_spawn_with_pipes (gboolean dont_wait,
int stderr_pipe[2] = { -1, -1 };
int child_err_report_pipe[2] = { -1, -1 };
int helper_report[2];
static gboolean warned_about_child_setup = FALSE;
GError *conv_error = NULL;
gint conv_error_index;
SETUP_DEBUG();
if (child_setup && !warned_about_child_setup)
{
warned_about_child_setup = TRUE;
g_warning ("passing a child setup function to the g_spawn functions is pointless and dangerous on Win32");
}
argc = protect_argv (argv, &protected_argv);
if (!standard_input && !standard_output && !standard_error &&
@ -451,103 +652,15 @@ do_spawn_with_pipes (gboolean dont_wait,
(flags & G_SPAWN_LEAVE_DESCRIPTORS_OPEN))
{
/* We can do without the helper process */
int mode = dont_wait ? P_NOWAIT : P_WAIT;
if (debug)
g_print ("doing without " HELPER_PROCESS "\n");
/* Call user function just before we spawn the program. Dunno
* what's the usefulness of this. A child setup function used on
* Unix probably isn't of much use as such on Win32, anyhow.
*/
if (child_setup)
{
static gboolean warned = FALSE;
if (!warned)
{
warned = TRUE;
g_warning ("passing a child setup function to the g_spawn functions is pointless and dangerous on Win32");
}
(* child_setup) (user_data);
}
new_argv = (flags & G_SPAWN_FILE_AND_ARGV_ZERO) ? protected_argv + 1 : protected_argv;
if (G_WIN32_HAVE_WIDECHAR_API ())
{
wchar_t *wargv0 = g_utf8_to_utf16 (argv[0], -1, NULL, NULL, NULL);
wchar_t **wargv = utf8_charv_to_wcharv (new_argv);
wchar_t **wenvp = utf8_charv_to_wcharv (envp);
if (flags & G_SPAWN_SEARCH_PATH)
if (wenvp != NULL)
rc = _wspawnvpe (mode, wargv0, (const wchar_t **) wargv, (const wchar_t **) wenvp);
else
rc = _wspawnvp (mode, wargv0, (const wchar_t **) wargv);
else
if (wenvp != NULL)
rc = _wspawnve (mode, wargv0, (const wchar_t **) wargv, (const wchar_t **) wenvp);
else
rc = _wspawnv (mode, wargv0, (const wchar_t **) wargv);
g_free (wargv0);
g_strfreev ((gchar **) wargv);
g_strfreev ((gchar **) wenvp);
}
else
{
char *cpargv0 = g_locale_from_utf8 (argv[0], -1, NULL, NULL, NULL);
char **cpargv = utf8_charv_to_cp_charv (new_argv);
char **cpenvp = utf8_charv_to_cp_charv (envp);
if (flags & G_SPAWN_SEARCH_PATH)
if (cpenvp != NULL)
rc = spawnvpe (mode, cpargv0, (const char **) cpargv, (const char **) cpenvp);
else
rc = spawnvp (mode, cpargv0, (const char **) cpargv);
else
if (envp != NULL)
rc = spawnve (mode, cpargv0, (const char **) cpargv, (const char **) cpenvp);
else
rc = spawnv (mode, cpargv0, (const char **) cpargv);
g_free (cpargv0);
g_strfreev (cpargv);
g_strfreev (cpenvp);
}
saved_errno = errno;
gboolean retval =
do_spawn_directly (dont_wait, dont_return_handle, flags,
argv, envp, protected_argv,
child_setup, user_data, child_handle,
exit_status, error);
g_strfreev (protected_argv);
if (rc == -1 && saved_errno != 0)
{
g_set_error (error,
G_SPAWN_ERROR,
G_SPAWN_ERROR_FAILED,
_("Failed to execute child process (%s)"),
g_strerror (errno));
goto cleanup_and_fail;
return retval;
}
if (dont_wait)
{
if (child_handle && !dont_return_handle)
*child_handle = (GPid) rc;
else
{
CloseHandle (rc);
if (child_handle)
*child_handle = 0;
}
}
else if (exit_status)
*exit_status = rc;
return TRUE;
}
new_argv = g_new (char *, argc + 1 + ARG_COUNT);
if (standard_input && !make_pipe (stdin_pipe, error))
goto cleanup_and_fail;
@ -560,6 +673,7 @@ do_spawn_with_pipes (gboolean dont_wait,
if (!make_pipe (child_err_report_pipe, error))
goto cleanup_and_fail;
new_argv = g_new (char *, argc + 1 + ARG_COUNT);
new_argv[0] = HELPER_PROCESS;
_g_sprintf (args[ARG_CHILD_ERR_REPORT], "%d", child_err_report_pipe[1]);
new_argv[ARG_CHILD_ERR_REPORT] = args[ARG_CHILD_ERR_REPORT];
@ -617,8 +731,7 @@ do_spawn_with_pipes (gboolean dont_wait,
}
if (working_directory && *working_directory)
/* The g_strdup() to lose the constness */
new_argv[ARG_WORKING_DIRECTORY] = g_strdup (working_directory);
new_argv[ARG_WORKING_DIRECTORY] = protect_argv_string (working_directory);
else
new_argv[ARG_WORKING_DIRECTORY] = g_strdup ("-");
@ -647,14 +760,47 @@ do_spawn_with_pipes (gboolean dont_wait,
g_print ("argv[%d]: %s\n", i, (new_argv[i] ? new_argv[i] : "NULL"));
}
if (child_setup)
(* child_setup) (user_data);
if (G_WIN32_HAVE_WIDECHAR_API ())
{
wchar_t *whelper = g_utf8_to_utf16 (HELPER_PROCESS, -1, NULL, NULL, NULL);
wchar_t **wargv = utf8_charv_to_wcharv (new_argv);
wchar_t **wenvp = utf8_charv_to_wcharv (envp);
wchar_t **wargv, **wenvp;
if (!utf8_charv_to_wcharv (new_argv, &wargv, &conv_error_index, &conv_error))
{
if (conv_error_index == ARG_WORKING_DIRECTORY)
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_CHDIR,
_("Invalid working directory: %s"),
conv_error->message);
else
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Invalid string in argument vector at %d: %s"),
conv_error_index - ARG_PROGRAM, conv_error->message);
g_error_free (conv_error);
g_strfreev (protected_argv);
g_free (new_argv[ARG_WORKING_DIRECTORY]);
g_free (new_argv);
g_free (whelper);
return FALSE;
}
if (!utf8_charv_to_wcharv (envp, &wenvp, NULL, &conv_error))
{
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Invalid string in environment: %s"),
conv_error->message);
g_error_free (conv_error);
g_strfreev (protected_argv);
g_free (new_argv[ARG_WORKING_DIRECTORY]);
g_free (new_argv);
g_free (whelper);
g_strfreev ((gchar **) wargv);
return FALSE;
}
if (child_setup)
(* child_setup) (user_data);
if (wenvp != NULL)
/* Let's hope envp hasn't mucked with PATH so that
@ -672,8 +818,42 @@ do_spawn_with_pipes (gboolean dont_wait,
}
else
{
char **cpargv = utf8_charv_to_cp_charv (new_argv);
char **cpenvp = utf8_charv_to_cp_charv (envp);
char **cpargv, **cpenvp;
if (!utf8_charv_to_cp_charv (new_argv, &cpargv, &conv_error_index, &conv_error))
{
if (conv_error_index == ARG_WORKING_DIRECTORY)
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_CHDIR,
_("Invalid working directory: %s"),
conv_error->message);
else
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Invalid string in argument vector at %d: %s"),
conv_error_index - ARG_PROGRAM, conv_error->message);
g_error_free (conv_error);
g_strfreev (protected_argv);
g_free (new_argv[ARG_WORKING_DIRECTORY]);
g_free (new_argv);
return FALSE;
}
if (!utf8_charv_to_cp_charv (envp, &cpenvp, NULL, &conv_error))
{
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Invalid string in environment: %s"),
conv_error->message);
g_error_free (conv_error);
g_strfreev (protected_argv);
g_free (new_argv[ARG_WORKING_DIRECTORY]);
g_free (new_argv);
g_strfreev (cpargv);
return FALSE;
}
if (child_setup)
(* child_setup) (user_data);
if (cpenvp != NULL)
rc = spawnvpe (P_NOWAIT, HELPER_PROCESS, (const char **) cpargv, (const char **) cpenvp);
@ -702,10 +882,9 @@ do_spawn_with_pipes (gboolean dont_wait,
/* Check if gspawn-win32-helper couldn't be run */
if (rc == -1 && saved_errno != 0)
{
g_set_error (error,
G_SPAWN_ERROR,
G_SPAWN_ERROR_FAILED,
_("Failed to execute helper program"));
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
_("Failed to execute helper program (%s)"),
g_strerror (saved_errno));
goto cleanup_and_fail;
}
@ -900,9 +1079,7 @@ g_spawn_sync_utf8 (const gchar *working_directory,
{
failed = TRUE;
g_set_error (error,
G_SPAWN_ERROR,
G_SPAWN_ERROR_READ,
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_READ,
_("Unexpected error in g_io_channel_win32_poll() reading data from a child process"));
break;
@ -1159,12 +1336,18 @@ setup_utf8_copies (const gchar *working_directory,
*utf8_working_directory = NULL;
else
{
*utf8_working_directory = g_locale_to_utf8 (working_directory, -1, NULL, NULL, NULL);
GError *conv_error = NULL;
*utf8_working_directory = g_locale_to_utf8 (working_directory, -1, NULL, NULL, &conv_error);
if (*utf8_working_directory == NULL)
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
"Invalid characters in working directory");
{
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_CHDIR,
_("Invalid working directory: %s"),
conv_error->message);
g_error_free (conv_error);
return FALSE;
}
}
argc = 0;
while (argv[argc])
@ -1172,11 +1355,15 @@ setup_utf8_copies (const gchar *working_directory,
*utf8_argv = g_new (gchar *, argc + 1);
for (i = 0; i < argc; i++)
{
(*utf8_argv)[i] = g_locale_to_utf8 (argv[i], -1, NULL, NULL, NULL);
GError *conv_error = NULL;
(*utf8_argv)[i] = g_locale_to_utf8 (argv[i], -1, NULL, NULL, &conv_error);
if ((*utf8_argv)[i] == NULL)
{
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
"Invalid characters in argument vector");
_("Invalid string in argument vector at %d: %s"),
i, conv_error->message);
g_error_free (conv_error);
g_strfreev (*utf8_argv);
*utf8_argv = NULL;
@ -1201,11 +1388,15 @@ setup_utf8_copies (const gchar *working_directory,
*utf8_envp = g_new (gchar *, envc + 1);
for (i = 0; i < envc; i++)
{
(*utf8_envp)[i] = g_locale_to_utf8 (envp[i], -1, NULL, NULL, NULL);
GError *conv_error = NULL;
(*utf8_envp)[i] = g_locale_to_utf8 (envp[i], -1, NULL, NULL, &conv_error);
if ((*utf8_envp)[i] == NULL)
{
g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
"Invalid characters in environment");
_("Invalid string in environment: %s"),
conv_error->message);
g_error_free (conv_error);
g_strfreev (*utf8_envp);
*utf8_envp = NULL;