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kicad/thirdparty/json_schema_validator/string-format-check.cpp

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#include <nlohmann/json-schema.hpp>
#include <algorithm>
#include <exception>
#include <iostream>
#include <regex>
#include <sstream>
#include <string>
#include <utility>
#include <vector>
/**
* Many of the RegExes are from @see http://jmrware.com/articles/2009/uri_regexp/URI_regex.html
*/
namespace
{
template <typename T>
void range_check(const T value, const T min, const T max)
{
if (!((value >= min) && (value <= max))) {
std::stringstream out;
out << "Value " << value << " should be in interval [" << min << "," << max << "] but is not!";
throw std::invalid_argument(out.str());
}
}
/** @see date_time_check */
void rfc3339_date_check(const std::string &value)
{
const static std::regex dateRegex{R"(^([0-9]{4})\-([0-9]{2})\-([0-9]{2})$)"};
std::smatch matches;
if (!std::regex_match(value, matches, dateRegex)) {
throw std::invalid_argument(value + " is not a date string according to RFC 3339.");
}
const auto year = std::stoi(matches[1].str());
const auto month = std::stoi(matches[2].str());
const auto mday = std::stoi(matches[3].str());
const auto isLeapYear = (year % 4 == 0) && ((year % 100 != 0) || (year % 400 == 0));
range_check(month, 1, 12);
if (month == 2) {
range_check(mday, 1, isLeapYear ? 29 : 28);
} else if (month <= 7) {
range_check(mday, 1, month % 2 == 0 ? 30 : 31);
} else {
range_check(mday, 1, month % 2 == 0 ? 31 : 30);
}
}
/** @see date_time_check */
void rfc3339_time_check(const std::string &value)
{
const static std::regex timeRegex{R"(^([0-9]{2})\:([0-9]{2})\:([0-9]{2})(\.[0-9]+)?(?:[Zz]|((?:\+|\-)[0-9]{2})\:([0-9]{2}))$)"};
std::smatch matches;
if (!std::regex_match(value, matches, timeRegex)) {
throw std::invalid_argument(value + " is not a time string according to RFC 3339.");
}
auto hour = std::stoi(matches[1].str());
auto minute = std::stoi(matches[2].str());
auto second = std::stoi(matches[3].str());
// const auto secfrac = std::stof( matches[4].str() );
range_check(hour, 0, 23);
range_check(minute, 0, 59);
int offsetHour = 0,
offsetMinute = 0;
/* don't check the numerical offset if time zone is specified as 'Z' */
if (!matches[5].str().empty()) {
offsetHour = std::stoi(matches[5].str());
offsetMinute = std::stoi(matches[6].str());
range_check(offsetHour, -23, 23);
range_check(offsetMinute, 0, 59);
if (offsetHour < 0)
offsetMinute *= -1;
}
/**
* @todo Could be made more exact by querying a leap second database and choosing the
* correct maximum in {58,59,60}. This current solution might match some invalid dates
* but it won't lead to false negatives. This only works if we know the full date, however
*/
auto day_minutes = hour * 60 + minute - (offsetHour * 60 + offsetMinute);
if (day_minutes < 0)
day_minutes += 60 * 24;
hour = day_minutes % 24;
minute = day_minutes / 24;
if (hour == 23 && minute == 59)
range_check(second, 0, 60); // possible leap-second
else
range_check(second, 0, 59);
}
/**
* @see https://tools.ietf.org/html/rfc3339#section-5.6
*
* @verbatim
* date-fullyear = 4DIGIT
* date-month = 2DIGIT ; 01-12
* date-mday = 2DIGIT ; 01-28, 01-29, 01-30, 01-31 based on
* ; month/year
* time-hour = 2DIGIT ; 00-23
* time-minute = 2DIGIT ; 00-59
* time-second = 2DIGIT ; 00-58, 00-59, 00-60 based on leap second
* ; rules
* time-secfrac = "." 1*DIGIT
* time-numoffset = ("+" / "-") time-hour ":" time-minute
* time-offset = "Z" / time-numoffset
*
* partial-time = time-hour ":" time-minute ":" time-second
* [time-secfrac]
* full-date = date-fullyear "-" date-month "-" date-mday
* full-time = partial-time time-offset
*
* date-time = full-date "T" full-time
* @endverbatim
* NOTE: Per [ABNF] and ISO8601, the "T" and "Z" characters in this
* syntax may alternatively be lower case "t" or "z" respectively.
*/
void rfc3339_date_time_check(const std::string &value)
{
const static std::regex dateTimeRegex{R"(^([0-9]{4}\-[0-9]{2}\-[0-9]{2})[Tt]([0-9]{2}\:[0-9]{2}\:[0-9]{2}(?:\.[0-9]+)?(?:[Zz]|(?:\+|\-)[0-9]{2}\:[0-9]{2}))$)"};
std::smatch matches;
if (!std::regex_match(value, matches, dateTimeRegex)) {
throw std::invalid_argument(value + " is not a date-time string according to RFC 3339.");
}
rfc3339_date_check(matches[1].str());
rfc3339_time_check(matches[2].str());
}
const std::string decOctet{R"((?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9]))"}; // matches numbers 0-255
const std::string ipv4Address{"(?:" + decOctet + R"(\.){3})" + decOctet};
const std::string h16{R"([0-9A-Fa-f]{1,4})"};
const std::string h16Left{"(?:" + h16 + ":)"};
const std::string ipv6Address{
"(?:"
"(?:" +
h16Left + "{6}"
"|::" +
h16Left + "{5}"
"|(?:" +
h16 + ")?::" + h16Left + "{4}"
"|(?:" +
h16Left + "{0,1}" + h16 + ")?::" + h16Left + "{3}"
"|(?:" +
h16Left + "{0,2}" + h16 + ")?::" + h16Left + "{2}"
"|(?:" +
h16Left + "{0,3}" + h16 + ")?::" + h16Left +
"|(?:" + h16Left + "{0,4}" + h16 + ")?::"
")(?:" +
h16Left + h16 + "|" + ipv4Address + ")"
"|(?:" +
h16Left + "{0,5}" + h16 + ")?::" + h16 +
"|(?:" + h16Left + "{0,6}" + h16 + ")?::"
")"};
const std::string ipvFuture{R"([Vv][0-9A-Fa-f]+\.[A-Za-z0-9\-._~!$&'()*+,;=:]+)"};
const std::string regName{R"((?:[A-Za-z0-9\-._~!$&'()*+,;=]|%[0-9A-Fa-f]{2})*)"};
const std::string host{
"(?:"
R"(\[(?:)" +
ipv6Address + "|" + ipvFuture + R"()\])" +
"|" + ipv4Address +
"|" + regName +
")"};
const std::string uuid{R"([0-9a-fA-F]{8}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{12})"};
// from http://stackoverflow.com/questions/106179/regular-expression-to-match-dns-hostname-or-ip-address
const std::string hostname{R"(^([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])(\.([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]))*$)"};
/**
* @see https://tools.ietf.org/html/rfc5322#section-4.1
*
* @verbatim
* atom = [CFWS] 1*atext [CFWS]
* word = atom / quoted-string
* phrase = 1*word / obs-phrase
* obs-FWS = 1*WSP *(CRLF 1*WSP)
* FWS = ([*WSP CRLF] 1*WSP) / obs-FWS
* ; Folding white space
* ctext = %d33-39 / ; Printable US-ASCII
* %d42-91 / ; characters not including
* %d93-126 / ; "(", ")", or "\"
* obs-ctext
* ccontent = ctext / quoted-pair / comment
* comment = "(" *([FWS] ccontent) [FWS] ")"
* CFWS = (1*([FWS] comment) [FWS]) / FWS
* obs-local-part = word *("." word)
* obs-domain = atom *("." atom)
* obs-dtext = obs-NO-WS-CTL / quoted-pair
* quoted-pair = ("\" (VCHAR / WSP)) / obs-qp
* obs-NO-WS-CTL = %d1-8 / ; US-ASCII control
* %d11 / ; characters that do not
* %d12 / ; include the carriage
* %d14-31 / ; return, line feed, and
* %d127 ; white space characters
* obs-ctext = obs-NO-WS-CTL
* obs-qtext = obs-NO-WS-CTL
* obs-utext = %d0 / obs-NO-WS-CTL / VCHAR
* obs-qp = "\" (%d0 / obs-NO-WS-CTL / LF / CR)
* obs-body = *((*LF *CR *((%d0 / text) *LF *CR)) / CRLF)
* obs-unstruct = *((*LF *CR *(obs-utext *LF *CR)) / FWS)
* obs-phrase = word *(word / "." / CFWS)
* obs-phrase-list = [phrase / CFWS] *("," [phrase / CFWS])
* qtext = %d33 / ; Printable US-ASCII
* %d35-91 / ; characters not including
* %d93-126 / ; "\" or the quote character
* obs-qtext
* qcontent = qtext / quoted-pair
* quoted-string = [CFWS]
* DQUOTE *([FWS] qcontent) [FWS] DQUOTE
* [CFWS]
* atext = ALPHA / DIGIT / ; Printable US-ASCII
* "!" / "#" / ; characters not including
* "$" / "%" / ; specials. Used for atoms.
* "&" / "'" /
* "*" / "+" /
* "-" / "/" /
* "=" / "?" /
* "^" / "_" /
* "`" / "{" /
* "|" / "}" /
* "~"
* dot-atom-text = 1*atext *("." 1*atext)
* dot-atom = [CFWS] dot-atom-text [CFWS]
* addr-spec = local-part "@" domain
* local-part = dot-atom / quoted-string / obs-local-part
* domain = dot-atom / domain-literal / obs-domain
* domain-literal = [CFWS] "[" *([FWS] dtext) [FWS] "]" [CFWS]
* dtext = %d33-90 / ; Printable US-ASCII
* %d94-126 / ; characters not including
* obs-dtext ; "[", "]", or "\"
* @endverbatim
* @todo Currently don't have a working tool for this larger ABNF to generate a regex.
* Other options:
* - https://github.com/ldthomas/apg-6.3
* - https://github.com/akr/abnf
*
* The problematic thing are the allowed whitespaces (even newlines) in the email.
* Ignoring those and starting with
* @see https://stackoverflow.com/questions/13992403/regex-validation-of-email-addresses-according-to-rfc5321-rfc5322
* and trying to divide up the complicated regex into understandable ABNF definitions from rfc5322 yields:
*/
const std::string obsnowsctl{R"([\x01-\x08\x0b\x0c\x0e-\x1f\x7f])"};
const std::string obsqp{R"(\\[\x01-\x09\x0b\x0c\x0e-\x7f])"};
const std::string qtext{R"((?:[\x21\x23-\x5b\x5d-\x7e]|)" + obsnowsctl + ")"};
const std::string dtext{R"([\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f])"};
const std::string quotedString{R"("(?:)" + qtext + "|" + obsqp + R"()*")"};
const std::string atext{R"([A-Za-z0-9!#$%&'*+/=?^_`{|}~-])"};
const std::string domainLiteral{R"(\[(?:(?:)" + decOctet + R"()\.){3}(?:)" + decOctet + R"(|[A-Za-z0-9-]*[A-Za-z0-9]:(?:)" + dtext + "|" + obsqp + R"()+)\])"};
const std::string dotAtom{"(?:" + atext + R"(+(?:\.)" + atext + "+)*)"};
const std::string stackoverflowMagicPart{R"((?:[[:alnum:]](?:[[:alnum:]-]*[[:alnum:]])?\.)+)"
R"([[:alnum:]](?:[[:alnum:]-]*[[:alnum:]])?)"};
const std::string email{"(?:" + dotAtom + "|" + quotedString + ")@(?:" + stackoverflowMagicPart + "|" + domainLiteral + ")"};
/**
* @see
*
* @verbatim
* URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
*
* hier-part = "//" authority path-abempty
* / path-absolute
* / path-rootless
* / path-empty
*
* URI-reference = URI / relative-ref
*
* absolute-URI = scheme ":" hier-part [ "?" query ]
*
* relative-ref = relative-part [ "?" query ] [ "#" fragment ]
*
* relative-part = "//" authority path-abempty
* / path-absolute
* / path-noscheme
* / path-empty
*
* scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
*
* authority = [ userinfo "@" ] host [ ":" port ]
* userinfo = *( unreserved / pct-encoded / sub-delims / ":" )
* host = IP-literal / IPv4address / reg-name
* port = *DIGIT
*
* IP-literal = "[" ( IPv6address / IPvFuture ) "]"
*
* IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
*
* IPv6address = 6( h16 ":" ) ls32
* / "::" 5( h16 ":" ) ls32
* / [ h16 ] "::" 4( h16 ":" ) ls32
* / [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
* / [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
* / [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
* / [ *4( h16 ":" ) h16 ] "::" ls32
* / [ *5( h16 ":" ) h16 ] "::" h16
* / [ *6( h16 ":" ) h16 ] "::"
*
* h16 = 1*4HEXDIG
* ls32 = ( h16 ":" h16 ) / IPv4address
* IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
* dec-octet = DIGIT ; 0-9
* / %x31-39 DIGIT ; 10-99
* / "1" 2DIGIT ; 100-199
* / "2" %x30-34 DIGIT ; 200-249
* / "25" %x30-35 ; 250-255
*
* reg-name = *( unreserved / pct-encoded / sub-delims )
*
* path = path-abempty ; begins with "/" or is empty
* / path-absolute ; begins with "/" but not "//"
* / path-noscheme ; begins with a non-colon segment
* / path-rootless ; begins with a segment
* / path-empty ; zero characters
*
* path-abempty = *( "/" segment )
* path-absolute = "/" [ segment-nz *( "/" segment ) ]
* path-noscheme = segment-nz-nc *( "/" segment )
* path-rootless = segment-nz *( "/" segment )
* path-empty = 0<pchar>
*
* segment = *pchar
* segment-nz = 1*pchar
* segment-nz-nc = 1*( unreserved / pct-encoded / sub-delims / "@" )
* ; non-zero-length segment without any colon ":"
*
* pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
*
* query = *( pchar / "/" / "?" )
*
* fragment = *( pchar / "/" / "?" )
*
* pct-encoded = "%" HEXDIG HEXDIG
*
* unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
* reserved = gen-delims / sub-delims
* gen-delims = ":" / "/" / "?" / "#" / "[" / "]" / "@"
* sub-delims = "!" / "$" / "&" / "'" / "(" / ")"
* / "*" / "+" / "," / ";" / "="
*
* @endverbatim
* @see adapted from: https://github.com/jhermsmeier/uri.regex/blob/master/uri.regex
*
*/
void rfc3986_uri_check(const std::string &value)
{
const static std::string scheme{R"(([A-Za-z][A-Za-z0-9+\-.]*):)"};
const static std::string hierPart{
R"((?:(\/\/)(?:((?:[A-Za-z0-9\-._~!$&'()*+,;=:]|)"
R"(%[0-9A-Fa-f]{2})*)@)?((?:\[(?:(?:(?:(?:[0-9A-Fa-f]{1,4}:){6}|)"
R"(::(?:[0-9A-Fa-f]{1,4}:){5}|)"
R"((?:[0-9A-Fa-f]{1,4})?::(?:[0-9A-Fa-f]{1,4}:){4}|)"
R"((?:(?:[0-9A-Fa-f]{1,4}:){0,1}[0-9A-Fa-f]{1,4})?::(?:[0-9A-Fa-f]{1,4}:){3}|)"
R"((?:(?:[0-9A-Fa-f]{1,4}:){0,2}[0-9A-Fa-f]{1,4})?::(?:[0-9A-Fa-f]{1,4}:){2}|)"
R"((?:(?:[0-9A-Fa-f]{1,4}:){0,3}[0-9A-Fa-f]{1,4})?::[0-9A-Fa-f]{1,4}:|)"
R"((?:(?:[0-9A-Fa-f]{1,4}:){0,4}[0-9A-Fa-f]{1,4})?::)(?:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}|)"
R"((?:(?:25[0-5]|2[0-4][0-9]|)"
R"([01]?[0-9][0-9]?)\.){3}(?:25[0-5]|)"
R"(2[0-4][0-9]|)"
R"([01]?[0-9][0-9]?))|)"
R"((?:(?:[0-9A-Fa-f]{1,4}:){0,5}[0-9A-Fa-f]{1,4})?::[0-9A-Fa-f]{1,4}|)"
R"((?:(?:[0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4})?::)|)"
R"([Vv][0-9A-Fa-f]+\.[A-Za-z0-9\-._~!$&'()*+,;=:]+)\]|)"
R"((?:(?:25[0-5]|)"
R"(2[0-4][0-9]|)"
R"([01]?[0-9][0-9]?)\.){3}(?:25[0-5]|)"
R"(2[0-4][0-9]|)"
R"([01]?[0-9][0-9]?)|)"
R"((?:[A-Za-z0-9\-._~!$&'()*+,;=]|)"
R"(%[0-9A-Fa-f]{2})*))(?::([0-9]*))?((?:\/(?:[A-Za-z0-9\-._~!$&'()*+,;=:@]|)"
R"(%[0-9A-Fa-f]{2})*)*)|)"
R"(\/((?:(?:[A-Za-z0-9\-._~!$&'()*+,;=:@]|)"
R"(%[0-9A-Fa-f]{2})+(?:\/(?:[A-Za-z0-9\-._~!$&'()*+,;=:@]|)"
R"(%[0-9A-Fa-f]{2})*)*)?)|)"
R"(((?:[A-Za-z0-9\-._~!$&'()*+,;=:@]|)"
R"(%[0-9A-Fa-f]{2})+(?:\/(?:[A-Za-z0-9\-._~!$&'()*+,;=:@]|)"
R"(%[0-9A-Fa-f]{2})*)*)|))"};
const static std::string query{R"((?:\?((?:[A-Za-z0-9\-._~!$&'()*+,;=:@\/?]|%[0-9A-Fa-f]{2})*))?)"};
const static std::string fragment{
R"((?:\#((?:[A-Za-z0-9\-._~!$&'()*+,;=:@\/?]|%[0-9A-Fa-f]{2})*))?)"};
const static std::string uriFormat{scheme + hierPart + query + fragment};
const static std::regex uriRegex{uriFormat};
if (!std::regex_match(value, uriRegex)) {
throw std::invalid_argument(value + " is not a URI string according to RFC 3986.");
}
}
} // namespace
namespace nlohmann
{
namespace json_schema
{
/**
* Checks validity for built-ins by converting the definitions given as ABNF in the linked RFC from
* @see https://json-schema.org/understanding-json-schema/reference/string.html#built-in-formats
* into regular expressions using @see https://www.msweet.org/abnf/ and some manual editing.
*
* @see https://json-schema.org/latest/json-schema-validation.html
*/
void default_string_format_check(const std::string &format, const std::string &value)
{
if (format == "date-time") {
rfc3339_date_time_check(value);
} else if (format == "date") {
rfc3339_date_check(value);
} else if (format == "time") {
rfc3339_time_check(value);
} else if (format == "uri") {
rfc3986_uri_check(value);
} else if (format == "email") {
static const std::regex emailRegex{email};
if (!std::regex_match(value, emailRegex)) {
throw std::invalid_argument(value + " is not a valid email according to RFC 5322.");
}
} else if (format == "hostname") {
static const std::regex hostRegex{hostname};
if (!std::regex_match(value, hostRegex)) {
throw std::invalid_argument(value + " is not a valid hostname according to RFC 3986 Appendix A.");
}
} else if (format == "ipv4") {
const static std::regex ipv4Regex{"^" + ipv4Address + "$"};
if (!std::regex_match(value, ipv4Regex)) {
throw std::invalid_argument(value + " is not an IPv4 string according to RFC 2673.");
}
} else if (format == "ipv6") {
static const std::regex ipv6Regex{ipv6Address};
if (!std::regex_match(value, ipv6Regex)) {
throw std::invalid_argument(value + " is not an IPv6 string according to RFC 5954.");
}
} else if (format == "uuid") {
static const std::regex uuidRegex{uuid};
if (!std::regex_match(value, uuidRegex)) {
throw std::invalid_argument(value + " is not an uuid string according to RFC 4122.");
}
} else if (format == "regex") {
try {
std::regex re(value, std::regex::ECMAScript);
} catch (std::exception &exception) {
throw exception;
}
} else {
/* yet unsupported JSON schema draft 7 built-ins */
static const std::vector<std::string> jsonSchemaStringFormatBuiltIns{
"date-time", "time", "date", "email", "idn-email", "hostname", "idn-hostname", "ipv4", "ipv6", "uri",
"uri-reference", "iri", "iri-reference", "uri-template", "json-pointer", "relative-json-pointer", "regex"};
if (std::find(jsonSchemaStringFormatBuiltIns.begin(), jsonSchemaStringFormatBuiltIns.end(), format) != jsonSchemaStringFormatBuiltIns.end()) {
throw std::logic_error("JSON schema string format built-in " + format + " not yet supported. " +
"Please open an issue or use a custom format checker.");
}
throw std::logic_error("Don't know how to validate " + format);
}
}
} // namespace json_schema
} // namespace nlohmann
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