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qemu/tests/check-qjson.c
Christophe Fergeau bbc0586ced json: Fix % handling when not interpolating 
Commit 8bca4613 added support for %% in json strings when interpolating,
but in doing so broke handling of % when not interpolating.

When parse_string() is fed a string token containing '%', it skips the
'%' regardless of ctxt->ap, i.e. even it's not interpolating.  If the
'%' is the string's last character, it fails an assertion.  Else, it
"merely" swallows the '%'.

Fix parse_string() to handle '%' specially only when interpolating.

To gauge the bug's impact, let's review non-interpolating users of this
parser, i.e. code passing NULL context to json_message_parser_init():

* tests/check-qjson.c, tests/test-qobject-input-visitor.c,
  tests/test-visitor-serialization.c

  Plenty of tests, but we still failed to cover the buggy case.

* monitor.c: QMP input

* qga/main.c: QGA input

* qobject_from_json():

  - qobject-input-visitor.c: JSON command line option arguments of
    -display and -blockdev

    Reproducer: -blockdev '{"%"}'

  - block.c: JSON pseudo-filenames starting with "json:"

    Reproducer: https://bugzilla.redhat.com/show_bug.cgi?id=1668244#c3

  - block/rbd.c: JSON key pairs

    Pseudo-filenames starting with "rbd:".

Command line, QMP and QGA input are trusted.

Filenames are trusted when they come from command line, QMP or HMP.
They are untrusted when they come from from image file headers.
Example: QCOW2 backing file name.  Note that this is *not* the security
boundary between host and guest.  It's the boundary between host and an
image file from an untrusted source.

Neither failing an assertion nor skipping a character in a filename of
your choice looks exploitable.  Note that we don't support compiling
with NDEBUG.

Fixes: 8bca4613e6
Cc: qemu-stable@nongnu.org
Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
Message-Id: <20190102140535.11512-1-cfergeau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
[Commit message extended to discuss impact]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2019-01-24 15:20:59 +01:00

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/*
* Copyright IBM, Corp. 2009
* Copyright (c) 2013, 2015 Red Hat Inc.
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
* Markus Armbruster <armbru@redhat.com>
*
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
* See the COPYING.LIB file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qapi/qmp/qbool.h"
#include "qapi/qmp/qjson.h"
#include "qapi/qmp/qlit.h"
#include "qapi/qmp/qnull.h"
#include "qapi/qmp/qnum.h"
#include "qapi/qmp/qstring.h"
#include "qemu/unicode.h"
#include "qemu-common.h"
static QString *from_json_str(const char *jstr, bool single, Error **errp)
{
char quote = single ? '\'' : '"';
char *qjstr = g_strdup_printf("%c%s%c", quote, jstr, quote);
QString *ret = qobject_to(QString, qobject_from_json(qjstr, errp));
g_free(qjstr);
return ret;
}
static char *to_json_str(QString *str)
{
QString *json = qobject_to_json(QOBJECT(str));
char *jstr;
if (!json) {
return NULL;
}
/* peel off double quotes */
jstr = g_strndup(qstring_get_str(json) + 1,
qstring_get_length(json) - 2);
qobject_unref(json);
return jstr;
}
static void escaped_string(void)
{
struct {
/* Content of JSON string to parse with qobject_from_json() */
const char *json_in;
/* Expected parse output; to unparse with qobject_to_json() */
const char *utf8_out;
int skip;
} test_cases[] = {
{ "\\b\\f\\n\\r\\t\\\\\\\"", "\b\f\n\r\t\\\"" },
{ "\\/\\'", "/'", .skip = 1 },
{ "single byte utf-8 \\u0020", "single byte utf-8 ", .skip = 1 },
{ "double byte utf-8 \\u00A2", "double byte utf-8 \xc2\xa2" },
{ "triple byte utf-8 \\u20AC", "triple byte utf-8 \xe2\x82\xac" },
{ "quadruple byte utf-8 \\uD834\\uDD1E", /* U+1D11E */
"quadruple byte utf-8 \xF0\x9D\x84\x9E" },
{ "\\", NULL },
{ "\\z", NULL },
{ "\\ux", NULL },
{ "\\u1x", NULL },
{ "\\u12x", NULL },
{ "\\u123x", NULL },
{ "\\u12345", "\341\210\2645" },
{ "\\u0000x", "\xC0\x80x" },
{ "unpaired leading surrogate \\uD800", NULL },
{ "unpaired leading surrogate \\uD800\\uCAFE", NULL },
{ "unpaired leading surrogate \\uD800\\uD801\\uDC02", NULL },
{ "unpaired trailing surrogate \\uDC00", NULL },
{ "backward surrogate pair \\uDC00\\uD800", NULL },
{ "noncharacter U+FDD0 \\uFDD0", NULL },
{ "noncharacter U+FDEF \\uFDEF", NULL },
{ "noncharacter U+1FFFE \\uD87F\\uDFFE", NULL },
{ "noncharacter U+10FFFF \\uDC3F\\uDFFF", NULL },
{}
};
int i, j;
QString *cstr;
char *jstr;
for (i = 0; test_cases[i].json_in; i++) {
for (j = 0; j < 2; j++) {
if (test_cases[i].utf8_out) {
cstr = from_json_str(test_cases[i].json_in, j, &error_abort);
g_assert_cmpstr(qstring_get_try_str(cstr),
==, test_cases[i].utf8_out);
if (!test_cases[i].skip) {
jstr = to_json_str(cstr);
g_assert_cmpstr(jstr, ==, test_cases[i].json_in);
g_free(jstr);
}
qobject_unref(cstr);
} else {
cstr = from_json_str(test_cases[i].json_in, j, NULL);
g_assert(!cstr);
}
}
}
}
static void string_with_quotes(void)
{
const char *test_cases[] = {
"\"the bee's knees\"",
"'double quote \"'",
NULL
};
int i;
QString *str;
char *cstr;
for (i = 0; test_cases[i]; i++) {
str = qobject_to(QString,
qobject_from_json(test_cases[i], &error_abort));
g_assert(str);
cstr = g_strndup(test_cases[i] + 1, strlen(test_cases[i]) - 2);
g_assert_cmpstr(qstring_get_str(str), ==, cstr);
g_free(cstr);
qobject_unref(str);
}
}
static void utf8_string(void)
{
/*
* Most test cases are scraped from Markus Kuhn's UTF-8 decoder
* capability and stress test at
* http://www.cl.cam.ac.uk/~mgk25/ucs/examples/UTF-8-test.txt
*/
static const struct {
/* Content of JSON string to parse with qobject_from_json() */
const char *json_in;
/* Expected parse output */
const char *utf8_out;
/* Expected unparse output, defaults to @json_in */
const char *json_out;
} test_cases[] = {
/* 0 Control characters */
{
/*
* Note: \x00 is impossible, other representations of
* U+0000 are covered under 4.3
*/
"\x01\x02\x03\x04\x05\x06\x07"
"\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F"
"\x10\x11\x12\x13\x14\x15\x16\x17"
"\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F",
NULL,
"\\u0001\\u0002\\u0003\\u0004\\u0005\\u0006\\u0007"
"\\b\\t\\n\\u000B\\f\\r\\u000E\\u000F"
"\\u0010\\u0011\\u0012\\u0013\\u0014\\u0015\\u0016\\u0017"
"\\u0018\\u0019\\u001A\\u001B\\u001C\\u001D\\u001E\\u001F",
},
/* 1 Some correct UTF-8 text */
{
/* a bit of German */
"Falsches \xC3\x9C" "ben von Xylophonmusik qu\xC3\xA4lt"
" jeden gr\xC3\xB6\xC3\x9F" "eren Zwerg.",
"Falsches \xC3\x9C" "ben von Xylophonmusik qu\xC3\xA4lt"
" jeden gr\xC3\xB6\xC3\x9F" "eren Zwerg.",
"Falsches \\u00DCben von Xylophonmusik qu\\u00E4lt"
" jeden gr\\u00F6\\u00DFeren Zwerg.",
},
{
/* a bit of Greek */
"\xCE\xBA\xE1\xBD\xB9\xCF\x83\xCE\xBC\xCE\xB5",
"\xCE\xBA\xE1\xBD\xB9\xCF\x83\xCE\xBC\xCE\xB5",
"\\u03BA\\u1F79\\u03C3\\u03BC\\u03B5",
},
/* '%' character when not interpolating */
{
"100%",
"100%",
},
/* 2 Boundary condition test cases */
/* 2.1 First possible sequence of a certain length */
/*
* 2.1.1 1 byte U+0020
* Control characters are already covered by their own test
* case under 0. Test the first 1 byte non-control character
* here.
*/
{
" ",
" ",
},
/* 2.1.2 2 bytes U+0080 */
{
"\xC2\x80",
"\xC2\x80",
"\\u0080",
},
/* 2.1.3 3 bytes U+0800 */
{
"\xE0\xA0\x80",
"\xE0\xA0\x80",
"\\u0800",
},
/* 2.1.4 4 bytes U+10000 */
{
"\xF0\x90\x80\x80",
"\xF0\x90\x80\x80",
"\\uD800\\uDC00",
},
/* 2.1.5 5 bytes U+200000 */
{
"\xF8\x88\x80\x80\x80",
NULL,
"\\uFFFD",
},
/* 2.1.6 6 bytes U+4000000 */
{
"\xFC\x84\x80\x80\x80\x80",
NULL,
"\\uFFFD",
},
/* 2.2 Last possible sequence of a certain length */
/* 2.2.1 1 byte U+007F */
{
"\x7F",
"\x7F",
"\\u007F",
},
/* 2.2.2 2 bytes U+07FF */
{
"\xDF\xBF",
"\xDF\xBF",
"\\u07FF",
},
/*
* 2.2.3 3 bytes U+FFFC
* The last possible sequence is actually U+FFFF. But that's
* a noncharacter, and already covered by its own test case
* under 5.3. Same for U+FFFE. U+FFFD is the last character
* in the BMP, and covered under 2.3. Because of U+FFFD's
* special role as replacement character, it's worth testing
* U+FFFC here.
*/
{
"\xEF\xBF\xBC",
"\xEF\xBF\xBC",
"\\uFFFC",
},
/* 2.2.4 4 bytes U+1FFFFF */
{
"\xF7\xBF\xBF\xBF",
NULL,
"\\uFFFD",
},
/* 2.2.5 5 bytes U+3FFFFFF */
{
"\xFB\xBF\xBF\xBF\xBF",
NULL,
"\\uFFFD",
},
/* 2.2.6 6 bytes U+7FFFFFFF */
{
"\xFD\xBF\xBF\xBF\xBF\xBF",
NULL,
"\\uFFFD",
},
/* 2.3 Other boundary conditions */
{
/* last one before surrogate range: U+D7FF */
"\xED\x9F\xBF",
"\xED\x9F\xBF",
"\\uD7FF",
},
{
/* first one after surrogate range: U+E000 */
"\xEE\x80\x80",
"\xEE\x80\x80",
"\\uE000",
},
{
/* last one in BMP: U+FFFD */
"\xEF\xBF\xBD",
"\xEF\xBF\xBD",
"\\uFFFD",
},
{
/* last one in last plane: U+10FFFD */
"\xF4\x8F\xBF\xBD",
"\xF4\x8F\xBF\xBD",
"\\uDBFF\\uDFFD"
},
{
/* first one beyond Unicode range: U+110000 */
"\xF4\x90\x80\x80",
NULL,
"\\uFFFD",
},
/* 3 Malformed sequences */
/* 3.1 Unexpected continuation bytes */
/* 3.1.1 First continuation byte */
{
"\x80",
NULL,
"\\uFFFD",
},
/* 3.1.2 Last continuation byte */
{
"\xBF",
NULL,
"\\uFFFD",
},
/* 3.1.3 2 continuation bytes */
{
"\x80\xBF",
NULL,
"\\uFFFD\\uFFFD",
},
/* 3.1.4 3 continuation bytes */
{
"\x80\xBF\x80",
NULL,
"\\uFFFD\\uFFFD\\uFFFD",
},
/* 3.1.5 4 continuation bytes */
{
"\x80\xBF\x80\xBF",
NULL,
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD",
},
/* 3.1.6 5 continuation bytes */
{
"\x80\xBF\x80\xBF\x80",
NULL,
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD",
},
/* 3.1.7 6 continuation bytes */
{
"\x80\xBF\x80\xBF\x80\xBF",
NULL,
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD",
},
/* 3.1.8 7 continuation bytes */
{
"\x80\xBF\x80\xBF\x80\xBF\x80",
NULL,
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD",
},
/* 3.1.9 Sequence of all 64 possible continuation bytes */
{
"\x80\x81\x82\x83\x84\x85\x86\x87"
"\x88\x89\x8A\x8B\x8C\x8D\x8E\x8F"
"\x90\x91\x92\x93\x94\x95\x96\x97"
"\x98\x99\x9A\x9B\x9C\x9D\x9E\x9F"
"\xA0\xA1\xA2\xA3\xA4\xA5\xA6\xA7"
"\xA8\xA9\xAA\xAB\xAC\xAD\xAE\xAF"
"\xB0\xB1\xB2\xB3\xB4\xB5\xB6\xB7"
"\xB8\xB9\xBA\xBB\xBC\xBD\xBE\xBF",
NULL,
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD"
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD"
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD"
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD"
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD"
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD"
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD"
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD",
},
/* 3.2 Lonely start characters */
/* 3.2.1 All 32 first bytes of 2-byte sequences, followed by space */
{
"\xC0 \xC1 \xC2 \xC3 \xC4 \xC5 \xC6 \xC7 "
"\xC8 \xC9 \xCA \xCB \xCC \xCD \xCE \xCF "
"\xD0 \xD1 \xD2 \xD3 \xD4 \xD5 \xD6 \xD7 "
"\xD8 \xD9 \xDA \xDB \xDC \xDD \xDE \xDF ",
NULL,
"\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD "
"\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD "
"\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD "
"\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD ",
},
/* 3.2.2 All 16 first bytes of 3-byte sequences, followed by space */
{
"\xE0 \xE1 \xE2 \xE3 \xE4 \xE5 \xE6 \xE7 "
"\xE8 \xE9 \xEA \xEB \xEC \xED \xEE \xEF ",
NULL,
"\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD "
"\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD ",
},
/* 3.2.3 All 8 first bytes of 4-byte sequences, followed by space */
{
"\xF0 \xF1 \xF2 \xF3 \xF4 \xF5 \xF6 \xF7 ",
NULL,
"\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD ",
},
/* 3.2.4 All 4 first bytes of 5-byte sequences, followed by space */
{
"\xF8 \xF9 \xFA \xFB ",
NULL,
"\\uFFFD \\uFFFD \\uFFFD \\uFFFD ",
},
/* 3.2.5 All 2 first bytes of 6-byte sequences, followed by space */
{
"\xFC \xFD ",
NULL,
"\\uFFFD \\uFFFD ",
},
/* 3.3 Sequences with last continuation byte missing */
/* 3.3.1 2-byte sequence with last byte missing (U+0000) */
{
"\xC0",
NULL,
"\\uFFFD",
},
/* 3.3.2 3-byte sequence with last byte missing (U+0000) */
{
"\xE0\x80",
NULL,
"\\uFFFD",
},
/* 3.3.3 4-byte sequence with last byte missing (U+0000) */
{
"\xF0\x80\x80",
NULL,
"\\uFFFD",
},
/* 3.3.4 5-byte sequence with last byte missing (U+0000) */
{
"\xF8\x80\x80\x80",
NULL,
"\\uFFFD",
},
/* 3.3.5 6-byte sequence with last byte missing (U+0000) */
{
"\xFC\x80\x80\x80\x80",
NULL,
"\\uFFFD",
},
/* 3.3.6 2-byte sequence with last byte missing (U+07FF) */
{
"\xDF",
NULL,
"\\uFFFD",
},
/* 3.3.7 3-byte sequence with last byte missing (U+FFFF) */
{
"\xEF\xBF",
NULL,
"\\uFFFD",
},
/* 3.3.8 4-byte sequence with last byte missing (U+1FFFFF) */
{
"\xF7\xBF\xBF",
NULL,
"\\uFFFD",
},
/* 3.3.9 5-byte sequence with last byte missing (U+3FFFFFF) */
{
"\xFB\xBF\xBF\xBF",
NULL,
"\\uFFFD",
},
/* 3.3.10 6-byte sequence with last byte missing (U+7FFFFFFF) */
{
"\xFD\xBF\xBF\xBF\xBF",
NULL,
"\\uFFFD",
},
/* 3.4 Concatenation of incomplete sequences */
{
"\xC0\xE0\x80\xF0\x80\x80\xF8\x80\x80\x80\xFC\x80\x80\x80\x80"
"\xDF\xEF\xBF\xF7\xBF\xBF\xFB\xBF\xBF\xBF\xFD\xBF\xBF\xBF\xBF",
NULL,
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD"
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD",
},
/* 3.5 Impossible bytes */
{
"\xFE",
NULL,
"\\uFFFD",
},
{
"\xFF",
NULL,
"\\uFFFD",
},
{
"\xFE\xFE\xFF\xFF",
NULL,
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD",
},
/* 4 Overlong sequences */
/* 4.1 Overlong '/' */
{
"\xC0\xAF",
NULL,
"\\uFFFD",
},
{
"\xE0\x80\xAF",
NULL,
"\\uFFFD",
},
{
"\xF0\x80\x80\xAF",
NULL,
"\\uFFFD",
},
{
"\xF8\x80\x80\x80\xAF",
NULL,
"\\uFFFD",
},
{
"\xFC\x80\x80\x80\x80\xAF",
NULL,
"\\uFFFD",
},
/*
* 4.2 Maximum overlong sequences
* Highest Unicode value that is still resulting in an
* overlong sequence if represented with the given number of
* bytes. This is a boundary test for safe UTF-8 decoders.
*/
{
/* \U+007F */
"\xC1\xBF",
NULL,
"\\uFFFD",
},
{
/* \U+07FF */
"\xE0\x9F\xBF",
NULL,
"\\uFFFD",
},
{
/*
* \U+FFFC
* The actual maximum would be U+FFFF, but that's a
* noncharacter. Testing U+FFFC seems more useful. See
* also 2.2.3
*/
"\xF0\x8F\xBF\xBC",
NULL,
"\\uFFFD",
},
{
/* \U+1FFFFF */
"\xF8\x87\xBF\xBF\xBF",
NULL,
"\\uFFFD",
},
{
/* \U+3FFFFFF */
"\xFC\x83\xBF\xBF\xBF\xBF",
NULL,
"\\uFFFD",
},
/* 4.3 Overlong representation of the NUL character */
{
/* \U+0000 */
"\xC0\x80",
"\xC0\x80",
"\\u0000",
},
{
/* \U+0000 */
"\xE0\x80\x80",
NULL,
"\\uFFFD",
},
{
/* \U+0000 */
"\xF0\x80\x80\x80",
NULL,
"\\uFFFD",
},
{
/* \U+0000 */
"\xF8\x80\x80\x80\x80",
NULL,
"\\uFFFD",
},
{
/* \U+0000 */
"\xFC\x80\x80\x80\x80\x80",
NULL,
"\\uFFFD",
},
/* 5 Illegal code positions */
/* 5.1 Single UTF-16 surrogates */
{
/* \U+D800 */
"\xED\xA0\x80",
NULL,
"\\uFFFD",
},
{
/* \U+DB7F */
"\xED\xAD\xBF",
NULL,
"\\uFFFD",
},
{
/* \U+DB80 */
"\xED\xAE\x80",
NULL,
"\\uFFFD",
},
{
/* \U+DBFF */
"\xED\xAF\xBF",
NULL,
"\\uFFFD",
},
{
/* \U+DC00 */
"\xED\xB0\x80",
NULL,
"\\uFFFD",
},
{
/* \U+DF80 */
"\xED\xBE\x80",
NULL,
"\\uFFFD",
},
{
/* \U+DFFF */
"\xED\xBF\xBF",
NULL,
"\\uFFFD",
},
/* 5.2 Paired UTF-16 surrogates */
{
/* \U+D800\U+DC00 */
"\xED\xA0\x80\xED\xB0\x80",
NULL,
"\\uFFFD\\uFFFD",
},
{
/* \U+D800\U+DFFF */
"\xED\xA0\x80\xED\xBF\xBF",
NULL,
"\\uFFFD\\uFFFD",
},
{
/* \U+DB7F\U+DC00 */
"\xED\xAD\xBF\xED\xB0\x80",
NULL,
"\\uFFFD\\uFFFD",
},
{
/* \U+DB7F\U+DFFF */
"\xED\xAD\xBF\xED\xBF\xBF",
NULL,
"\\uFFFD\\uFFFD",
},
{
/* \U+DB80\U+DC00 */
"\xED\xAE\x80\xED\xB0\x80",
NULL,
"\\uFFFD\\uFFFD",
},
{
/* \U+DB80\U+DFFF */
"\xED\xAE\x80\xED\xBF\xBF",
NULL,
"\\uFFFD\\uFFFD",
},
{
/* \U+DBFF\U+DC00 */
"\xED\xAF\xBF\xED\xB0\x80",
NULL,
"\\uFFFD\\uFFFD",
},
{
/* \U+DBFF\U+DFFF */
"\xED\xAF\xBF\xED\xBF\xBF",
NULL,
"\\uFFFD\\uFFFD",
},
/* 5.3 Other illegal code positions */
/* BMP noncharacters */
{
/* \U+FFFE */
"\xEF\xBF\xBE",
NULL,
"\\uFFFD",
},
{
/* \U+FFFF */
"\xEF\xBF\xBF",
NULL,
"\\uFFFD",
},
{
/* U+FDD0 */
"\xEF\xB7\x90",
NULL,
"\\uFFFD",
},
{
/* U+FDEF */
"\xEF\xB7\xAF",
NULL,
"\\uFFFD",
},
/* Plane 1 .. 16 noncharacters */
{
/* U+1FFFE U+1FFFF U+2FFFE U+2FFFF ... U+10FFFE U+10FFFF */
"\xF0\x9F\xBF\xBE\xF0\x9F\xBF\xBF"
"\xF0\xAF\xBF\xBE\xF0\xAF\xBF\xBF"
"\xF0\xBF\xBF\xBE\xF0\xBF\xBF\xBF"
"\xF1\x8F\xBF\xBE\xF1\x8F\xBF\xBF"
"\xF1\x9F\xBF\xBE\xF1\x9F\xBF\xBF"
"\xF1\xAF\xBF\xBE\xF1\xAF\xBF\xBF"
"\xF1\xBF\xBF\xBE\xF1\xBF\xBF\xBF"
"\xF2\x8F\xBF\xBE\xF2\x8F\xBF\xBF"
"\xF2\x9F\xBF\xBE\xF2\x9F\xBF\xBF"
"\xF2\xAF\xBF\xBE\xF2\xAF\xBF\xBF"
"\xF2\xBF\xBF\xBE\xF2\xBF\xBF\xBF"
"\xF3\x8F\xBF\xBE\xF3\x8F\xBF\xBF"
"\xF3\x9F\xBF\xBE\xF3\x9F\xBF\xBF"
"\xF3\xAF\xBF\xBE\xF3\xAF\xBF\xBF"
"\xF3\xBF\xBF\xBE\xF3\xBF\xBF\xBF"
"\xF4\x8F\xBF\xBE\xF4\x8F\xBF\xBF",
NULL,
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD"
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD"
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD"
"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD",
},
{}
};
int i, j;
QString *str;
const char *json_in, *utf8_out, *utf8_in, *json_out, *tail;
char *end, *in, *jstr;
for (i = 0; test_cases[i].json_in; i++) {
for (j = 0; j < 2; j++) {
json_in = test_cases[i].json_in;
utf8_out = test_cases[i].utf8_out;
utf8_in = test_cases[i].utf8_out ?: test_cases[i].json_in;
json_out = test_cases[i].json_out ?: test_cases[i].json_in;
/* Parse @json_in, expect @utf8_out */
if (utf8_out) {
str = from_json_str(json_in, j, &error_abort);
g_assert_cmpstr(qstring_get_try_str(str), ==, utf8_out);
qobject_unref(str);
} else {
str = from_json_str(json_in, j, NULL);
g_assert(!str);
/*
* Failure may be due to any sequence, but *all* sequences
* are expected to fail. Test each one in isolation.
*/
for (tail = json_in; *tail; tail = end) {
mod_utf8_codepoint(tail, 6, &end);
if (*end == ' ') {
end++;
}
in = strndup(tail, end - tail);
str = from_json_str(in, j, NULL);
g_assert(!str);
g_free(in);
}
}
/* Unparse @utf8_in, expect @json_out */
str = qstring_from_str(utf8_in);
jstr = to_json_str(str);
g_assert_cmpstr(jstr, ==, json_out);
qobject_unref(str);
g_free(jstr);
/* Parse @json_out right back, unless it has replacements */
if (!strstr(json_out, "\\uFFFD")) {
str = from_json_str(json_out, j, &error_abort);
g_assert_cmpstr(qstring_get_try_str(str), ==, utf8_in);
qobject_unref(str);
}
}
}
}
static void simple_number(void)
{
int i;
struct {
const char *encoded;
int64_t decoded;
int skip;
} test_cases[] = {
{ "0", 0 },
{ "1234", 1234 },
{ "1", 1 },
{ "-32", -32 },
{ "-0", 0, .skip = 1 },
{ },
};
for (i = 0; test_cases[i].encoded; i++) {
QNum *qnum;
int64_t val;
qnum = qobject_to(QNum,
qobject_from_json(test_cases[i].encoded,
&error_abort));
g_assert(qnum);
g_assert(qnum_get_try_int(qnum, &val));
g_assert_cmpint(val, ==, test_cases[i].decoded);
if (test_cases[i].skip == 0) {
QString *str;
str = qobject_to_json(QOBJECT(qnum));
g_assert(strcmp(qstring_get_str(str), test_cases[i].encoded) == 0);
qobject_unref(str);
}
qobject_unref(qnum);
}
}
static void large_number(void)
{
const char *maxu64 = "18446744073709551615"; /* 2^64-1 */
const char *gtu64 = "18446744073709551616"; /* 2^64 */
const char *lti64 = "-9223372036854775809"; /* -2^63 - 1 */
QNum *qnum;
QString *str;
uint64_t val;
int64_t ival;
qnum = qobject_to(QNum, qobject_from_json(maxu64, &error_abort));
g_assert(qnum);
g_assert_cmpuint(qnum_get_uint(qnum), ==, 18446744073709551615U);
g_assert(!qnum_get_try_int(qnum, &ival));
str = qobject_to_json(QOBJECT(qnum));
g_assert_cmpstr(qstring_get_str(str), ==, maxu64);
qobject_unref(str);
qobject_unref(qnum);
qnum = qobject_to(QNum, qobject_from_json(gtu64, &error_abort));
g_assert(qnum);
g_assert_cmpfloat(qnum_get_double(qnum), ==, 18446744073709552e3);
g_assert(!qnum_get_try_uint(qnum, &val));
g_assert(!qnum_get_try_int(qnum, &ival));
str = qobject_to_json(QOBJECT(qnum));
g_assert_cmpstr(qstring_get_str(str), ==, gtu64);
qobject_unref(str);
qobject_unref(qnum);
qnum = qobject_to(QNum, qobject_from_json(lti64, &error_abort));
g_assert(qnum);
g_assert_cmpfloat(qnum_get_double(qnum), ==, -92233720368547758e2);
g_assert(!qnum_get_try_uint(qnum, &val));
g_assert(!qnum_get_try_int(qnum, &ival));
str = qobject_to_json(QOBJECT(qnum));
g_assert_cmpstr(qstring_get_str(str), ==, "-9223372036854775808");
qobject_unref(str);
qobject_unref(qnum);
}
static void float_number(void)
{
int i;
struct {
const char *encoded;
double decoded;
int skip;
} test_cases[] = {
{ "32.43", 32.43 },
{ "0.222", 0.222 },
{ "-32.12313", -32.12313 },
{ "-32.20e-10", -32.20e-10, .skip = 1 },
{ },
};
for (i = 0; test_cases[i].encoded; i++) {
QObject *obj;
QNum *qnum;
obj = qobject_from_json(test_cases[i].encoded, &error_abort);
qnum = qobject_to(QNum, obj);
g_assert(qnum);
g_assert(qnum_get_double(qnum) == test_cases[i].decoded);
if (test_cases[i].skip == 0) {
QString *str;
str = qobject_to_json(obj);
g_assert(strcmp(qstring_get_str(str), test_cases[i].encoded) == 0);
qobject_unref(str);
}
qobject_unref(qnum);
}
}
static void keyword_literal(void)
{
QObject *obj;
QBool *qbool;
QNull *null;
QString *str;
obj = qobject_from_json("true", &error_abort);
qbool = qobject_to(QBool, obj);
g_assert(qbool);
g_assert(qbool_get_bool(qbool) == true);
str = qobject_to_json(obj);
g_assert(strcmp(qstring_get_str(str), "true") == 0);
qobject_unref(str);
qobject_unref(qbool);
obj = qobject_from_json("false", &error_abort);
qbool = qobject_to(QBool, obj);
g_assert(qbool);
g_assert(qbool_get_bool(qbool) == false);
str = qobject_to_json(obj);
g_assert(strcmp(qstring_get_str(str), "false") == 0);
qobject_unref(str);
qobject_unref(qbool);
obj = qobject_from_json("null", &error_abort);
g_assert(obj != NULL);
g_assert(qobject_type(obj) == QTYPE_QNULL);
null = qnull();
g_assert(QOBJECT(null) == obj);
qobject_unref(obj);
qobject_unref(null);
}
static void interpolation_valid(void)
{
long long value_lld = 0x123456789abcdefLL;
int64_t value_d64 = value_lld;
long value_ld = (long)value_lld;
int value_d = (int)value_lld;
unsigned long long value_llu = 0xfedcba9876543210ULL;
uint64_t value_u64 = value_llu;
unsigned long value_lu = (unsigned long)value_llu;
unsigned value_u = (unsigned)value_llu;
double value_f = 2.323423423;
const char *value_s = "hello world";
QObject *value_p = QOBJECT(qnull());
QBool *qbool;
QNum *qnum;
QString *qstr;
QObject *qobj;
/* bool */
qbool = qobject_to(QBool, qobject_from_jsonf_nofail("%i", false));
g_assert(qbool);
g_assert(qbool_get_bool(qbool) == false);
qobject_unref(qbool);
/* Test that non-zero values other than 1 get collapsed to true */
qbool = qobject_to(QBool, qobject_from_jsonf_nofail("%i", 2));
g_assert(qbool);
g_assert(qbool_get_bool(qbool) == true);
qobject_unref(qbool);
/* number */
qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%d", value_d));
g_assert_cmpint(qnum_get_int(qnum), ==, value_d);
qobject_unref(qnum);
qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%ld", value_ld));
g_assert_cmpint(qnum_get_int(qnum), ==, value_ld);
qobject_unref(qnum);
qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%lld", value_lld));
g_assert_cmpint(qnum_get_int(qnum), ==, value_lld);
qobject_unref(qnum);
qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%" PRId64, value_d64));
g_assert_cmpint(qnum_get_int(qnum), ==, value_lld);
qobject_unref(qnum);
qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%u", value_u));
g_assert_cmpuint(qnum_get_uint(qnum), ==, value_u);
qobject_unref(qnum);
qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%lu", value_lu));
g_assert_cmpuint(qnum_get_uint(qnum), ==, value_lu);
qobject_unref(qnum);
qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%llu", value_llu));
g_assert_cmpuint(qnum_get_uint(qnum), ==, value_llu);
qobject_unref(qnum);
qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%" PRIu64, value_u64));
g_assert_cmpuint(qnum_get_uint(qnum), ==, value_llu);
qobject_unref(qnum);
qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%f", value_f));
g_assert(qnum_get_double(qnum) == value_f);
qobject_unref(qnum);
/* string */
qstr = qobject_to(QString,
qobject_from_jsonf_nofail("%s", value_s));
g_assert_cmpstr(qstring_get_try_str(qstr), ==, value_s);
qobject_unref(qstr);
/* object */
qobj = qobject_from_jsonf_nofail("%p", value_p);
g_assert(qobj == value_p);
}
static void interpolation_unknown(void)
{
if (g_test_subprocess()) {
qobject_from_jsonf_nofail("%x", 666);
}
g_test_trap_subprocess(NULL, 0, 0);
g_test_trap_assert_failed();
g_test_trap_assert_stderr("*Unexpected error*"
"invalid interpolation '%x'*");
}
static void interpolation_string(void)
{
if (g_test_subprocess()) {
qobject_from_jsonf_nofail("['%s', %s]", "eins", "zwei");
}
g_test_trap_subprocess(NULL, 0, 0);
g_test_trap_assert_failed();
g_test_trap_assert_stderr("*Unexpected error*"
"can't interpolate into string*");
}
static void simple_dict(void)
{
int i;
struct {
const char *encoded;
QLitObject decoded;
} test_cases[] = {
{
.encoded = "{\"foo\": 42, \"bar\": \"hello world\"}",
.decoded = QLIT_QDICT(((QLitDictEntry[]){
{ "foo", QLIT_QNUM(42) },
{ "bar", QLIT_QSTR("hello world") },
{ }
})),
}, {
.encoded = "{}",
.decoded = QLIT_QDICT(((QLitDictEntry[]){
{ }
})),
}, {
.encoded = "{\"foo\": 43}",
.decoded = QLIT_QDICT(((QLitDictEntry[]){
{ "foo", QLIT_QNUM(43) },
{ }
})),
},
{ }
};
for (i = 0; test_cases[i].encoded; i++) {
QObject *obj;
QString *str;
obj = qobject_from_json(test_cases[i].encoded, &error_abort);
g_assert(qlit_equal_qobject(&test_cases[i].decoded, obj));
str = qobject_to_json(obj);
qobject_unref(obj);
obj = qobject_from_json(qstring_get_str(str), &error_abort);
g_assert(qlit_equal_qobject(&test_cases[i].decoded, obj));
qobject_unref(obj);
qobject_unref(str);
}
}
/*
* this generates json of the form:
* a(0,m) = [0, 1, ..., m-1]
* a(n,m) = {
* 'key0': a(0,m),
* 'key1': a(1,m),
* ...
* 'key(n-1)': a(n-1,m)
* }
*/
static void gen_test_json(GString *gstr, int nest_level_max,
int elem_count)
{
int i;
g_assert(gstr);
if (nest_level_max == 0) {
g_string_append(gstr, "[");
for (i = 0; i < elem_count; i++) {
g_string_append_printf(gstr, "%d", i);
if (i < elem_count - 1) {
g_string_append_printf(gstr, ", ");
}
}
g_string_append(gstr, "]");
return;
}
g_string_append(gstr, "{");
for (i = 0; i < nest_level_max; i++) {
g_string_append_printf(gstr, "'key%d': ", i);
gen_test_json(gstr, i, elem_count);
if (i < nest_level_max - 1) {
g_string_append(gstr, ",");
}
}
g_string_append(gstr, "}");
}
static void large_dict(void)
{
GString *gstr = g_string_new("");
QObject *obj;
gen_test_json(gstr, 10, 100);
obj = qobject_from_json(gstr->str, &error_abort);
g_assert(obj != NULL);
qobject_unref(obj);
g_string_free(gstr, true);
}
static void simple_list(void)
{
int i;
struct {
const char *encoded;
QLitObject decoded;
} test_cases[] = {
{
.encoded = "[43,42]",
.decoded = QLIT_QLIST(((QLitObject[]){
QLIT_QNUM(43),
QLIT_QNUM(42),
{ }
})),
},
{
.encoded = "[43]",
.decoded = QLIT_QLIST(((QLitObject[]){
QLIT_QNUM(43),
{ }
})),
},
{
.encoded = "[]",
.decoded = QLIT_QLIST(((QLitObject[]){
{ }
})),
},
{
.encoded = "[{}]",
.decoded = QLIT_QLIST(((QLitObject[]){
QLIT_QDICT(((QLitDictEntry[]){
{},
})),
{},
})),
},
{ }
};
for (i = 0; test_cases[i].encoded; i++) {
QObject *obj;
QString *str;
obj = qobject_from_json(test_cases[i].encoded, &error_abort);
g_assert(qlit_equal_qobject(&test_cases[i].decoded, obj));
str = qobject_to_json(obj);
qobject_unref(obj);
obj = qobject_from_json(qstring_get_str(str), &error_abort);
g_assert(qlit_equal_qobject(&test_cases[i].decoded, obj));
qobject_unref(obj);
qobject_unref(str);
}
}
static void simple_whitespace(void)
{
int i;
struct {
const char *encoded;
QLitObject decoded;
} test_cases[] = {
{
.encoded = " [ 43 , 42 ]",
.decoded = QLIT_QLIST(((QLitObject[]){
QLIT_QNUM(43),
QLIT_QNUM(42),
{ }
})),
},
{
.encoded = "\t[ 43 , { 'h' : 'b' },\r\n\t[ ], 42 ]\n",
.decoded = QLIT_QLIST(((QLitObject[]){
QLIT_QNUM(43),
QLIT_QDICT(((QLitDictEntry[]){
{ "h", QLIT_QSTR("b") },
{ }})),
QLIT_QLIST(((QLitObject[]){
{ }})),
QLIT_QNUM(42),
{ }
})),
},
{
.encoded = " [ 43 , { 'h' : 'b' , 'a' : 32 }, [ ], 42 ]",
.decoded = QLIT_QLIST(((QLitObject[]){
QLIT_QNUM(43),
QLIT_QDICT(((QLitDictEntry[]){
{ "h", QLIT_QSTR("b") },
{ "a", QLIT_QNUM(32) },
{ }})),
QLIT_QLIST(((QLitObject[]){
{ }})),
QLIT_QNUM(42),
{ }
})),
},
{ }
};
for (i = 0; test_cases[i].encoded; i++) {
QObject *obj;
QString *str;
obj = qobject_from_json(test_cases[i].encoded, &error_abort);
g_assert(qlit_equal_qobject(&test_cases[i].decoded, obj));
str = qobject_to_json(obj);
qobject_unref(obj);
obj = qobject_from_json(qstring_get_str(str), &error_abort);
g_assert(qlit_equal_qobject(&test_cases[i].decoded, obj));
qobject_unref(obj);
qobject_unref(str);
}
}
static void simple_interpolation(void)
{
QObject *embedded_obj;
QObject *obj;
QLitObject decoded = QLIT_QLIST(((QLitObject[]){
QLIT_QNUM(1),
QLIT_QSTR("100%"),
QLIT_QLIST(((QLitObject[]){
QLIT_QNUM(32),
QLIT_QNUM(42),
{}})),
{}}));
embedded_obj = qobject_from_json("[32, 42]", &error_abort);
g_assert(embedded_obj != NULL);
obj = qobject_from_jsonf_nofail("[%d, '100%%', %p]", 1, embedded_obj);
g_assert(qlit_equal_qobject(&decoded, obj));
qobject_unref(obj);
}
static void empty_input(void)
{
Error *err = NULL;
QObject *obj;
obj = qobject_from_json("", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static void blank_input(void)
{
Error *err = NULL;
QObject *obj;
obj = qobject_from_json("\n ", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static void junk_input(void)
{
/* Note: junk within strings is covered elsewhere */
Error *err = NULL;
QObject *obj;
obj = qobject_from_json("@", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
obj = qobject_from_json("{\x01", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
obj = qobject_from_json("[0\xFF]", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
obj = qobject_from_json("00", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
obj = qobject_from_json("[1e", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
obj = qobject_from_json("truer", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static void unterminated_string(void)
{
Error *err = NULL;
QObject *obj = qobject_from_json("\"abc", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static void unterminated_sq_string(void)
{
Error *err = NULL;
QObject *obj = qobject_from_json("'abc", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static void unterminated_escape(void)
{
Error *err = NULL;
QObject *obj = qobject_from_json("\"abc\\\"", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static void unterminated_array(void)
{
Error *err = NULL;
QObject *obj = qobject_from_json("[32", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static void unterminated_array_comma(void)
{
Error *err = NULL;
QObject *obj = qobject_from_json("[32,", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static void invalid_array_comma(void)
{
Error *err = NULL;
QObject *obj = qobject_from_json("[32,}", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static void unterminated_dict(void)
{
Error *err = NULL;
QObject *obj = qobject_from_json("{'abc':32", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static void unterminated_dict_comma(void)
{
Error *err = NULL;
QObject *obj = qobject_from_json("{'abc':32,", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static void invalid_dict_comma(void)
{
Error *err = NULL;
QObject *obj = qobject_from_json("{'abc':32,}", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static void unterminated_literal(void)
{
Error *err = NULL;
QObject *obj = qobject_from_json("nul", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static char *make_nest(char *buf, size_t cnt)
{
memset(buf, '[', cnt - 1);
buf[cnt - 1] = '{';
buf[cnt] = '}';
memset(buf + cnt + 1, ']', cnt - 1);
buf[2 * cnt] = 0;
return buf;
}
static void limits_nesting(void)
{
Error *err = NULL;
enum { max_nesting = 1024 }; /* see qobject/json-streamer.c */
char buf[2 * (max_nesting + 1) + 1];
QObject *obj;
obj = qobject_from_json(make_nest(buf, max_nesting), &error_abort);
g_assert(obj != NULL);
qobject_unref(obj);
obj = qobject_from_json(make_nest(buf, max_nesting + 1), &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
static void multiple_values(void)
{
Error *err = NULL;
QObject *obj;
obj = qobject_from_json("false true", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
obj = qobject_from_json("} true", &err);
error_free_or_abort(&err);
g_assert(obj == NULL);
}
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
g_test_add_func("/literals/string/escaped", escaped_string);
g_test_add_func("/literals/string/quotes", string_with_quotes);
g_test_add_func("/literals/string/utf8", utf8_string);
g_test_add_func("/literals/number/simple", simple_number);
g_test_add_func("/literals/number/large", large_number);
g_test_add_func("/literals/number/float", float_number);
g_test_add_func("/literals/keyword", keyword_literal);
g_test_add_func("/literals/interpolation/valid", interpolation_valid);
g_test_add_func("/literals/interpolation/unkown", interpolation_unknown);
g_test_add_func("/literals/interpolation/string", interpolation_string);
g_test_add_func("/dicts/simple_dict", simple_dict);
g_test_add_func("/dicts/large_dict", large_dict);
g_test_add_func("/lists/simple_list", simple_list);
g_test_add_func("/mixed/simple_whitespace", simple_whitespace);
g_test_add_func("/mixed/interpolation", simple_interpolation);
g_test_add_func("/errors/empty", empty_input);
g_test_add_func("/errors/blank", blank_input);
g_test_add_func("/errors/junk", junk_input);
g_test_add_func("/errors/unterminated/string", unterminated_string);
g_test_add_func("/errors/unterminated/escape", unterminated_escape);
g_test_add_func("/errors/unterminated/sq_string", unterminated_sq_string);
g_test_add_func("/errors/unterminated/array", unterminated_array);
g_test_add_func("/errors/unterminated/array_comma", unterminated_array_comma);
g_test_add_func("/errors/unterminated/dict", unterminated_dict);
g_test_add_func("/errors/unterminated/dict_comma", unterminated_dict_comma);
g_test_add_func("/errors/invalid_array_comma", invalid_array_comma);
g_test_add_func("/errors/invalid_dict_comma", invalid_dict_comma);
g_test_add_func("/errors/unterminated/literal", unterminated_literal);
g_test_add_func("/errors/limits/nesting", limits_nesting);
g_test_add_func("/errors/multiple_values", multiple_values);
return g_test_run();
}
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