diff --git a/src/test/util_tests.cpp b/src/test/util_tests.cpp index 3309e2e387..1779bcdd95 100644 --- a/src/test/util_tests.cpp +++ b/src/test/util_tests.cpp @@ -322,9 +322,16 @@ BOOST_AUTO_TEST_CASE(test_ParseInt32) BOOST_CHECK(ParseInt32("-2147483648", &n) && n == -2147483648); BOOST_CHECK(ParseInt32("-1234", &n) && n == -1234); // Invalid values + BOOST_CHECK(!ParseInt32("", &n)); + BOOST_CHECK(!ParseInt32(" 1", &n)); // no padding inside + BOOST_CHECK(!ParseInt32("1 ", &n)); BOOST_CHECK(!ParseInt32("1a", &n)); BOOST_CHECK(!ParseInt32("aap", &n)); BOOST_CHECK(!ParseInt32("0x1", &n)); // no hex + BOOST_CHECK(!ParseInt32("0x1", &n)); // no hex + const char test_bytes[] = {'1', 0, '1'}; + std::string teststr(test_bytes, sizeof(test_bytes)); + BOOST_CHECK(!ParseInt32(teststr, &n)); // no embedded NULs // Overflow and underflow BOOST_CHECK(!ParseInt32("-2147483649", NULL)); BOOST_CHECK(!ParseInt32("2147483648", NULL)); @@ -332,6 +339,64 @@ BOOST_AUTO_TEST_CASE(test_ParseInt32) BOOST_CHECK(!ParseInt32("32482348723847471234", NULL)); } +BOOST_AUTO_TEST_CASE(test_ParseInt64) +{ + int64_t n; + // Valid values + BOOST_CHECK(ParseInt64("1234", NULL)); + BOOST_CHECK(ParseInt64("0", &n) && n == 0LL); + BOOST_CHECK(ParseInt64("1234", &n) && n == 1234LL); + BOOST_CHECK(ParseInt64("01234", &n) && n == 1234LL); // no octal + BOOST_CHECK(ParseInt64("2147483647", &n) && n == 2147483647LL); + BOOST_CHECK(ParseInt64("-2147483648", &n) && n == -2147483648LL); + BOOST_CHECK(ParseInt64("9223372036854775807", &n) && n == 9223372036854775807LL); + BOOST_CHECK(ParseInt64("-9223372036854775808", &n) && n == 9223372036854775808LL); + BOOST_CHECK(ParseInt64("-1234", &n) && n == -1234LL); + // Invalid values + BOOST_CHECK(!ParseInt64("", &n)); + BOOST_CHECK(!ParseInt64(" 1", &n)); // no padding inside + BOOST_CHECK(!ParseInt64("1 ", &n)); + BOOST_CHECK(!ParseInt64("1a", &n)); + BOOST_CHECK(!ParseInt64("aap", &n)); + BOOST_CHECK(!ParseInt64("0x1", &n)); // no hex + const char test_bytes[] = {'1', 0, '1'}; + std::string teststr(test_bytes, sizeof(test_bytes)); + BOOST_CHECK(!ParseInt64(teststr, &n)); // no embedded NULs + // Overflow and underflow + BOOST_CHECK(!ParseInt64("-9223372036854775809", NULL)); + BOOST_CHECK(!ParseInt64("9223372036854775808", NULL)); + BOOST_CHECK(!ParseInt64("-32482348723847471234", NULL)); + BOOST_CHECK(!ParseInt64("32482348723847471234", NULL)); +} + +BOOST_AUTO_TEST_CASE(test_ParseDouble) +{ + double n; + // Valid values + BOOST_CHECK(ParseDouble("1234", NULL)); + BOOST_CHECK(ParseDouble("0", &n) && n == 0.0); + BOOST_CHECK(ParseDouble("1234", &n) && n == 1234.0); + BOOST_CHECK(ParseDouble("01234", &n) && n == 1234.0); // no octal + BOOST_CHECK(ParseDouble("2147483647", &n) && n == 2147483647.0); + BOOST_CHECK(ParseDouble("-2147483648", &n) && n == -2147483648.0); + BOOST_CHECK(ParseDouble("-1234", &n) && n == -1234.0); + BOOST_CHECK(ParseDouble("1e6", &n) && n == 1e6); + BOOST_CHECK(ParseDouble("-1e6", &n) && n == -1e6); + // Invalid values + BOOST_CHECK(!ParseDouble("", &n)); + BOOST_CHECK(!ParseDouble(" 1", &n)); // no padding inside + BOOST_CHECK(!ParseDouble("1 ", &n)); + BOOST_CHECK(!ParseDouble("1a", &n)); + BOOST_CHECK(!ParseDouble("aap", &n)); + BOOST_CHECK(!ParseDouble("0x1", &n)); // no hex + const char test_bytes[] = {'1', 0, '1'}; + std::string teststr(test_bytes, sizeof(test_bytes)); + BOOST_CHECK(!ParseDouble(teststr, &n)); // no embedded NULs + // Overflow and underflow + BOOST_CHECK(!ParseDouble("-1e10000", NULL)); + BOOST_CHECK(!ParseDouble("1e10000", NULL)); +} + BOOST_AUTO_TEST_CASE(test_FormatParagraph) { BOOST_CHECK_EQUAL(FormatParagraph("", 79, 0), ""); diff --git a/src/utilstrencodings.cpp b/src/utilstrencodings.cpp index c15bddc6fb..b10f3c5903 100644 --- a/src/utilstrencodings.cpp +++ b/src/utilstrencodings.cpp @@ -416,12 +416,25 @@ string DecodeBase32(const string& str) return (vchRet.size() == 0) ? string() : string((const char*)&vchRet[0], vchRet.size()); } +static bool ParsePrechecks(const std::string& str) +{ + if (str.empty()) // No empty string allowed + return false; + if (str.size() >= 1 && (isspace(str[0]) || isspace(str[str.size()-1]))) // No padding allowed + return false; + if (str.size() != strlen(str.c_str())) // No embedded NUL characters allowed + return false; + return true; +} + bool ParseInt32(const std::string& str, int32_t *out) { + if (!ParsePrechecks(str)) + return false; char *endp = NULL; errno = 0; // strtol will not set errno if valid long int n = strtol(str.c_str(), &endp, 10); - if(out) *out = (int)n; + if(out) *out = (int32_t)n; // Note that strtol returns a *long int*, so even if strtol doesn't report a over/underflow // we still have to check that the returned value is within the range of an *int32_t*. On 64-bit // platforms the size of these types may be different. @@ -430,6 +443,34 @@ bool ParseInt32(const std::string& str, int32_t *out) n <= std::numeric_limits::max(); } +bool ParseInt64(const std::string& str, int64_t *out) +{ + if (!ParsePrechecks(str)) + return false; + char *endp = NULL; + errno = 0; // strtoll will not set errno if valid + long long int n = strtoll(str.c_str(), &endp, 10); + if(out) *out = (int64_t)n; + // Note that strtoll returns a *long long int*, so even if strtol doesn't report a over/underflow + // we still have to check that the returned value is within the range of an *int64_t*. + return endp && *endp == 0 && !errno && + n >= std::numeric_limits::min() && + n <= std::numeric_limits::max(); +} + +bool ParseDouble(const std::string& str, double *out) +{ + if (!ParsePrechecks(str)) + return false; + if (str.size() >= 2 && str[0] == '0' && str[1] == 'x') // No hexadecimal floats allowed + return false; + char *endp = NULL; + errno = 0; // strtod will not set errno if valid + double n = strtod(str.c_str(), &endp); + if(out) *out = n; + return endp && *endp == 0 && !errno; +} + std::string FormatParagraph(const std::string in, size_t width, size_t indent) { std::stringstream out; diff --git a/src/utilstrencodings.h b/src/utilstrencodings.h index b0edd8b542..fb3ef04281 100644 --- a/src/utilstrencodings.h +++ b/src/utilstrencodings.h @@ -49,6 +49,20 @@ int atoi(const std::string& str); */ bool ParseInt32(const std::string& str, int32_t *out); +/** + * Convert string to signed 64-bit integer with strict parse error feedback. + * @returns true if the entire string could be parsed as valid integer, + * false if not the entire string could be parsed or when overflow or underflow occurred. + */ +bool ParseInt64(const std::string& str, int64_t *out); + +/** + * Convert string to double with strict parse error feedback. + * @returns true if the entire string could be parsed as valid double, + * false if not the entire string could be parsed or when overflow or underflow occurred. + */ +bool ParseDouble(const std::string& str, double *out); + template std::string HexStr(const T itbegin, const T itend, bool fSpaces=false) {