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json: fix \uXXXX parsing

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We need exactly 4 hex characters, everything else is refused. We
also copy those characters directly to the output string without
assuming any encoding.

See #2337
This commit is contained in:
Wim Taymans 2022-04-26 11:01:33 +02:00
parent d9871f36c1
commit f2cdb15e0c
2 changed files with 10 additions and 7 deletions
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3
test/test-spa-json.c
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@ -176,6 +176,9 @@ PWTEST(json_encode)
pwtest_str_eq(dst, "\"\\u0004\\u0005\\u001f \\u0001\x7f\x90\"");
pwtest_int_eq(spa_json_parse_stringn(dst, sizeof(dst), result, sizeof(result)), 1);
pwtest_str_eq(result, "\x04\x05\x1f\x20\x01\x7f\x90");
strcpy(dst, "\"\\u03b2a\"");
pwtest_int_eq(spa_json_parse_stringn(dst, sizeof(dst), result, sizeof(result)), 1);
pwtest_str_eq(result, "\003\262a");
return PWTEST_PASS;
}