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MDEV-19670 json escaped unicode parse error.

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Fixed 4-byte length characters handled incorrectly.
This commit is contained in:
Alexey Botchkov
2019-09-12 11:12:55 +04:00
parent 0fa5ad3acf
commit 9554ef0678
3 changed files with 19 additions and 1 deletions
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9
mysql-test/main/func_json.result
View File

@ -942,5 +942,14 @@ def json_depnth 3 10 1 N 32897 0 63
json_length json_depnth
2 3
#
# MDEV-19670 json escaped unicode parse error
#
SELECT json_valid('{"value":"\\ud83d\\ude0a"}');
json_valid('{"value":"\\ud83d\\ude0a"}')
1
SELECT json_valid('{"test": "\\ud83d\\ude0b"}');
json_valid('{"test": "\\ud83d\\ude0b"}')
1
#
# End of 10.3 tests
#

7
mysql-test/main/func_json.test
View File

@ -561,6 +561,13 @@ SELECT
--enable_ps_protocol
--disable_metadata
--echo #
--echo # MDEV-19670 json escaped unicode parse error
--echo #
SELECT json_valid('{"value":"\\ud83d\\ude0a"}');
SELECT json_valid('{"test": "\\ud83d\\ude0b"}');
--echo #
--echo # End of 10.3 tests
--echo #

4
strings/json_lib.c
View File

@ -320,15 +320,17 @@ static int json_handle_esc(json_string_t *s)
if (s->c_next != '\\')
return s->error= JE_SYN;
s->c_str+= c_len;
if ((c_len= json_next_char(s)) <= 0)
return s->error= json_eos(s) ? JE_EOS : JE_BAD_CHR;
if (s->c_next != 'u')
return s->error= JE_SYN;
s->c_str+= c_len;
if (read_4_hexdigits(s, code+2))
return 1;
if ((c_len= my_utf16_uni(0, &s->c_next, code, code+4)) == 2)
if ((c_len= my_utf16_uni(0, &s->c_next, code, code+4)) == 4)
return 0;
}
return s->error= JE_BAD_CHR;