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uri: add illegal_characters argument to unescape_bytes

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It's not clear to me why this argument was excluded in the first place,
and Dan doesn't remember either. At least for consistency with
unescape_string, add it.

See also:
https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1574#note_867283

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
This commit is contained in:
Marc-André Lureau 2020-07-15 21:57:41 +04:00
parent 5ca8e51ae4
commit 4c6654dcd4
4 changed files with 21 additions and 8 deletions
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2
fuzzing/fuzz_uri_escape.c
View File

@ -10,7 +10,7 @@ test_bytes (const guint8 *data,
if (size > G_MAXSSIZE)
return;
unescaped_bytes = g_uri_unescape_bytes ((const gchar *) data, (gssize) size);
unescaped_bytes = g_uri_unescape_bytes ((const gchar *) data, (gssize) size, NULL);
if (unescaped_bytes == NULL)
return;

13
glib/guri.c
View File

@ -2218,12 +2218,20 @@ g_uri_escape_string (const gchar *unescaped,
* @escaped_string: A URI-escaped string
* @length: the length of @escaped_string to escape, or -1 if it
* is NUL-terminated.
* @illegal_characters: (nullable): a string of illegal characters
* not to be allowed, or %NULL.
*
* Unescapes a segment of an escaped string as binary data.
*
* Note that in contrast to g_uri_unescape_string(), this does allow
* `NUL` bytes to appear in the output.
*
* If any of the characters in @illegal_characters or the NUL
* character appears as an escaped character in @escaped_string, then
* that is an error and %NULL will be returned. This is useful if you
* want to avoid for instance having a slash being expanded in an
* escaped path element, which might confuse pathname handling.
*
* Returns: (transfer full): an unescaped version of @escaped_string
* or %NULL on error. The returned #GBytes should be unreffed when no
* longer needed.
@ -2232,7 +2240,8 @@ g_uri_escape_string (const gchar *unescaped,
**/
GBytes *
g_uri_unescape_bytes (const gchar *escaped_string,
gssize length)
gssize length,
const char *illegal_characters)
{
gchar *buf;
gssize unescaped_length;
@ -2243,7 +2252,7 @@ g_uri_unescape_bytes (const gchar *escaped_string,
length = strlen (escaped_string);
unescaped_length = uri_decoder (&buf,
NULL,
illegal_characters,
escaped_string, length,
FALSE,
FALSE,

3
glib/guri.h
View File

@ -357,7 +357,8 @@ char * g_uri_escape_string (const char *unescaped,
GLIB_AVAILABLE_IN_2_66
GBytes * g_uri_unescape_bytes (const char *escaped_string,
gssize length);
gssize length,
const char *illegal_characters);
GLIB_AVAILABLE_IN_2_66
char * g_uri_escape_bytes (const guchar *unescaped,
gsize length,

11
glib/tests/uri.c
View File

@ -372,15 +372,18 @@ test_uri_unescape_bytes (gconstpointer test_data)
{
/* Inputs */
const gchar *escaped; /* (nullable) */
const gchar *illegal;
/* Outputs */
gssize expected_unescaped_len; /* -1 => error expected */
const guint8 *expected_unescaped; /* (nullable) */
}
tests[] =
{
{ "%00%00", 2, (const guint8 *) "\x00\x00" },
{ "%%", -1, NULL },
{ "%", -1, NULL },
{ "%00%00", NULL, 2, (const guint8 *) "\x00\x00" },
{ "/cursors/none.png", "/", 17, "/cursors/none.png" },
{ "/cursors%2fbad-subdir/none.png", "/", -1, NULL },
{ "%%", NULL, -1, NULL },
{ "%", NULL, -1, NULL },
};
gsize i;
@ -407,7 +410,7 @@ test_uri_unescape_bytes (gconstpointer test_data)
escaped = g_memdup (tests[i].escaped, escaped_len);
}
bytes = g_uri_unescape_bytes (escaped, escaped_len);
bytes = g_uri_unescape_bytes (escaped, escaped_len, tests[i].illegal);
if (tests[i].expected_unescaped_len < 0)
{