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In JSONParser add lex_state ls_number_leading_zero

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This commit is contained in:
m-holger 2023-01-24 11:22:06 +00:00
parent cba1c352e3
commit 08e768909d
3 changed files with 33 additions and 5 deletions
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34
libqpdf/JSON.cc
View File

@ -648,6 +648,7 @@ namespace
ls_top,
ls_number,
ls_number_minus,
ls_number_leading_zero,
ls_alpha,
ls_string,
ls_backslash,
@ -868,13 +869,20 @@ JSONParser::getToken()
number_after_e = 0;
number_saw_point = false;
number_saw_e = false;
} else if ((*p >= '0') && (*p <= '9')) {
} else if ((*p >= '1') && (*p <= '9')) {
lex_state = ls_number;
number_before_point = 1;
number_after_point = 0;
number_after_e = 0;
number_saw_point = false;
number_saw_e = false;
} else if (*p == '0') {
lex_state = ls_number_leading_zero;
number_before_point = 1;
number_after_point = 0;
number_after_e = 0;
number_saw_point = false;
number_saw_e = false;
} else if (*p == '.') {
lex_state = ls_number;
number_before_point = 0;
@ -898,7 +906,7 @@ JSONParser::getToken()
lex_state = ls_number;
} else if (*p == '0') {
++number_before_point;
lex_state = ls_number;
lex_state = ls_number_leading_zero;
} else {
QTC::TC("libtests", "JSON parse number minus no digits");
throw std::runtime_error(
@ -907,6 +915,25 @@ JSONParser::getToken()
}
break;
case ls_number_leading_zero:
if (*p == '.') {
lex_state = ls_number;
} else if (*p == 'e') {
lex_state = ls_number;
} else if (QUtil::is_space(*p)) {
action = ignore;
ready = true;
} else if (strchr("{}[]:,", *p)) {
action = reread;
ready = true;
} else {
QTC::TC("libtests", "JSON parse leading zero");
throw std::runtime_error(
"JSON: offset " + std::to_string(offset) +
": number with leading zero");
}
break;
case ls_number:
if ((*p >= '0') && (*p <= '9')) {
if (number_saw_e) {
@ -1037,6 +1064,7 @@ JSONParser::getToken()
case ls_number:
case ls_number_minus:
case ls_number_leading_zero:
case ls_alpha:
// okay
break;
@ -1111,6 +1139,7 @@ JSONParser::handleToken()
case ls_number:
case ls_number_minus:
case ls_number_leading_zero:
if (number_saw_point && (number_after_point == 0)) {
// QTC::TC("libtests", "JSON parse decimal with no digits");
throw std::runtime_error(
@ -1120,7 +1149,6 @@ JSONParser::handleToken()
if ((number_before_point > 1) &&
((first_char == '0') ||
((first_char == '-') && (token.at(1) == '0')))) {
QTC::TC("libtests", "JSON parse leading zero");
throw std::runtime_error(
"JSON: offset " + std::to_string(offset) +
": number with leading zero");

2
libtests/qtest/json_parse/bad-32.out
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@ -1 +1 @@
exception: bad-32.json: JSON: offset 5: number with leading zero
exception: bad-32.json: JSON: offset 1: number with leading zero

2
libtests/qtest/json_parse/bad-33.out
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@ -1 +1 @@
exception: bad-33.json: JSON: offset 6: number with leading zero
exception: bad-33.json: JSON: offset 2: number with leading zero