|
|
| version 1.79, 2015/10/12 21:04:58 | version 1.87, 2019/11/11 20:57:18 |
|---|---|
| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: @b math parser class. | Parser: @b math parser class. |
| Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com) | Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru>(http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru>(http://paf.design.ru) |
| portions from gen_uuid.c, | portions from gen_uuid.c, |
| Line 31 volatile const char * IDENT_MATH_C="$Id$ | Line 31 volatile const char * IDENT_MATH_C="$Id$ |
| // class | // class |
| class MMath: public Methoded { | class MMath: public Methoded { |
| public: | |
| MMath(); | |
| public: // Methoded | public: // Methoded |
| bool used_directly() { return false; } | bool used_directly() { return false; } |
| public: | |
| MMath(); | |
| }; | }; |
| // global variables | // global variables |
| DECLARE_CLASS_VAR(math, 0 /*fictive*/, new MMath); | DECLARE_CLASS_VAR(math, new MMath); |
| // methods | // methods |
| static void _random(Request& r, MethodParams& params) { | static void _random(Request& r, MethodParams& params) { |
| double top=params.as_double(0, "range must be expression", r); | double top=params.as_double(0, "range must be expression", r); |
| if(top<=0 || top>MAX_UINT) | if(top<1 || top>INT32_MAX) |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, 0, "top(%.15g) must be [1..%u]", top, INT32_MAX); |
| 0, | r.write(*new VInt(_random(uint(top)))); |
| "top(%g) must be [1..%u]", top, MAX_UINT); | |
| r.write_no_lang(*new VInt(_random(uint(top)))); | |
| } | } |
| Line 63 static double radians(double param) { re | Line 60 static double radians(double param) { re |
| static void math1(Request& r, MethodParams& params, math1_func_ptr func) { | static void math1(Request& r, MethodParams& params, math1_func_ptr func) { |
| double param=params.as_double(0, "parameter must be expression", r); | double param=params.as_double(0, "parameter must be expression", r); |
| double result=func(param); | double result=func(param); |
| r.write_no_lang(*new VDouble(result)); | r.write(*new VDouble(result)); |
| } | } |
| #define MATH1(name) \ | #define MATH1(name) \ |
| Line 102 static void math2(Request& r, MethodPara | Line 99 static void math2(Request& r, MethodPara |
| double a=params.as_double(0, "parameter must be expression", r); | double a=params.as_double(0, "parameter must be expression", r); |
| double b=params.as_double(1, "parameter must be expression", r); | double b=params.as_double(1, "parameter must be expression", r); |
| double result=func(a, b); | double result=func(a, b); |
| r.write_no_lang(*new VDouble(result)); | r.write(*new VDouble(result)); |
| } | } |
| #define MATH2(name) \ | #define MATH2(name) \ |
| Line 156 static void _crypt(Request& r, MethodPar | Line 153 static void _crypt(Request& r, MethodPar |
| pa_MD5Encode((const unsigned char *)password, | pa_MD5Encode((const unsigned char *)password, |
| (const unsigned char *)normal_salt, sample_buf, sample_size); | (const unsigned char *)normal_salt, sample_buf, sample_size); |
| String sample(sample_buf); | String sample(sample_buf); |
| r.write_pass_lang(sample); | r.write(sample); |
| } else { | } else { |
| #ifdef HAVE_CRYPT | #ifdef HAVE_CRYPT |
| const char* static_sample_buf=crypt(password, normal_salt); | const char* static_sample_buf=crypt(password, normal_salt); |
| Line 167 static void _crypt(Request& r, MethodPar | Line 164 static void _crypt(Request& r, MethodPar |
| 0, | 0, |
| "crypt on this platform does not support '%.*s' salt prefix", prefix_size, normal_salt); | "crypt on this platform does not support '%.*s' salt prefix", prefix_size, normal_salt); |
| r.write_pass_lang(String(pa_strdup(static_sample_buf))); | r.write(String(pa_strdup(static_sample_buf))); |
| #else | #else |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, |
| 0, | 0, |
| Line 185 static void _md5(Request& r, MethodParam | Line 182 static void _md5(Request& r, MethodParam |
| pa_MD5Update(&context, (const unsigned char*)string, strlen(string)); | pa_MD5Update(&context, (const unsigned char*)string, strlen(string)); |
| pa_MD5Final(digest, &context); | pa_MD5Final(digest, &context); |
| r.write_pass_lang(*new String(hex_string(digest, sizeof(digest), false))); | r.write(*new String(hex_string(digest, sizeof(digest), false))); |
| } | } |
| Line 337 static void _sha1(Request& r, MethodPara | Line 334 static void _sha1(Request& r, MethodPara |
| SHA1Input (&c, (const unsigned char*)string, strlen(string)); | SHA1Input (&c, (const unsigned char*)string, strlen(string)); |
| SHA1ReadDigest(digest, &c); | SHA1ReadDigest(digest, &c); |
| r.write_pass_lang(*new String(hex_string(digest, sizeof(digest), false))); | r.write(*new String(hex_string(digest, sizeof(digest), false))); |
| } | |
| String::C getData(Value& vdata, Request& r){ | |
| if(const String* sdata=vdata.get_string()){ | |
| String::Body body=sdata->cstr_to_string_body_untaint(String::L_AS_IS, r.connection(false), &r.charsets); // explode content, honor tainting changes | |
| return String::C(body.cstr(), body.length()); | |
| } else { | |
| VFile *file=vdata.as_vfile(String::L_AS_IS); | |
| return String::C(file->value_ptr(),file->value_size()); | |
| } | |
| } | } |
| void memxor(char *dest, const char *src, size_t n){ | void memxor(char *dest, const char *src, size_t n){ |
| Line 377 void memxor(char *dest, const char *src, | Line 384 void memxor(char *dest, const char *src, |
| static void _digest(Request& r, MethodParams& params) { | static void _digest(Request& r, MethodParams& params) { |
| const String &smethod = params.as_string(0, PARAMETER_MUST_BE_STRING); | const String &smethod = params.as_string(0, PARAMETER_MUST_BE_STRING); |
| Value& vdata=params.as_no_junction(1, "parameter must be string or file"); | String::C data=getData(params.as_no_junction(1, "parameter must be string or file"), r); |
| String::C data; | |
| if(const String* sdata=vdata.get_string()){ | |
| String::Body body=sdata->cstr_to_string_body_untaint(String::L_AS_IS, r.connection(false), &r.charsets); // explode content, honor tainting changes | |
| data=String::C(body.cstr(), body.length()); | |
| } else { | |
| VFile *file=vdata.as_vfile(String::L_AS_IS); | |
| data=String::C(file->value_ptr(),file->value_size()); | |
| } | |
| enum Method { M_MD5, M_SHA1, M_SHA256, M_SHA512 } method; | enum Method { M_MD5, M_SHA1, M_SHA256, M_SHA512 } method; |
| Line 394 static void _digest(Request& r, MethodPa | Line 392 static void _digest(Request& r, MethodPa |
| else if (smethod == "sha1" ) method = M_SHA1; | else if (smethod == "sha1" ) method = M_SHA1; |
| else if (smethod == "sha256" ) method = M_SHA256; | else if (smethod == "sha256" ) method = M_SHA256; |
| else if (smethod == "sha512" ) method = M_SHA512; | else if (smethod == "sha512" ) method = M_SHA512; |
| else throw Exception(PARSER_RUNTIME, &smethod, "must be 'md5' or 'sha1'"); | else throw Exception(PARSER_RUNTIME, &smethod, "must be 'md5' or 'sha1' or 'sha256' or 'sha512'"); |
| const char *hmac=0; | const char *hmac=0; |
| enum Format { F_HEX, F_BASE64 } format = F_HEX; | enum Format { F_HEX, F_BASE64 } format = F_HEX; |
| Line 472 static void _digest(Request& r, MethodPa | Line 470 static void _digest(Request& r, MethodPa |
| } | } |
| if(format == F_HEX){ | if(format == F_HEX){ |
| r.write_pass_lang(*new String(hex_string((unsigned char *)digest.str, digest.length, false))); | r.write(*new String(hex_string((unsigned char *)digest.str, digest.length, false))); |
| } | } |
| if(format == F_BASE64){ | if(format == F_BASE64){ |
| r.write_pass_lang(*new String(pa_base64_encode(digest.str, digest.length))); | r.write(*new String(pa_base64_encode(digest.str, digest.length))); |
| } | } |
| } | } |
| static void _uuid(Request& r, MethodParams& /*params*/) { | static void _uuid(Request& r, MethodParams& /*params*/) { |
| uuid uuid=get_uuid(); | r.write(*new String(get_uuid_cstr())); |
| const size_t bufsize=36+1/*zero-teminator*/+1/*for faulty snprintfs*/; | |
| char* cstr=new(PointerFreeGC) char[bufsize]; | |
| snprintf(cstr, bufsize, | |
| "%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X", | |
| uuid.time_low, uuid.time_mid, uuid.time_hi_and_version, | |
| uuid.clock_seq >> 8, uuid.clock_seq & 0xFF, | |
| uuid.node[0], uuid.node[1], uuid.node[2], | |
| uuid.node[3], uuid.node[4], uuid.node[5]); | |
| r.write_pass_lang(*new String(cstr)); | |
| } | } |
| static void _uid64(Request& r, MethodParams& /*params*/) { | static void _uid64(Request& r, MethodParams& /*params*/) { |
| unsigned char id[64/8]; | unsigned char id[64/8]; |
| random(&id, sizeof(id)); | random(&id, sizeof(id)); |
| r.write_pass_lang(*new String(hex_string(id, sizeof(id), true))); | r.write(*new String(hex_string(id, sizeof(id), true))); |
| } | } |
| static void _crc32(Request& r, MethodParams& params) { | static void _crc32(Request& r, MethodParams& params) { |
| const char *string=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr(); | const char *string=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr(); |
| r.write_no_lang(*new VInt(pa_crc32(string, strlen(string)))); | r.write(*new VInt(pa_crc32(string, strlen(string)))); |
| } | } |
| static void toBase(unsigned long long int value, unsigned int base, char*& ptr){ | static const char* abc_hex="0123456789ABCDEF"; |
| static const char* hex="0123456789ABCDEF"; | |
| unsigned int rest = (unsigned int)(value % base); | static unsigned char hex_lookup[256]={ |
| if(value >= base) | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| toBase( (value-rest)/base, base, ptr); | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| *ptr++=(char)hex[rest]; | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, | |
| 0,10,11,12,13,14,15, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
| 0,10,11,12,13,14,15, 0, 0, 0, 0, 0, 0, 0, 0, 0 | |
| }; | |
| static unsigned char abc_lookup[256]={}; | |
| static unsigned char abc_256_lookup[256]={}; | |
| inline unsigned char *init_abc_256(){ | |
| if(!abc_256_lookup[255]) for(int i=0; i<256; i++) abc_256_lookup[i] = (unsigned char)i; | |
| return abc_256_lookup; | |
| } | } |
| static void _convert(Request& r, MethodParams& params) { | static void _convert(Request& r, MethodParams& params) { |
| const char *str=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr(); | String::C data=getData(params.as_no_junction(0, "parameter must be string or file"), r); |
| int base_from=params.as_int(1, "base from must be integer", r); | bool abc_mode = true; |
| if(base_from < 2 || base_from > 16) | unsigned char *lookup; |
| throw Exception(PARSER_RUNTIME, 0, "base from must be an integer from 2 to 16"); | const char *abc_from; |
| int base_from; | |
| if(params[1].is_string()){ | |
| abc_from = params[1].get_string()->cstr(); | |
| base_from = strlen(abc_from); | |
| if(base_from < 2) | |
| throw Exception(PARSER_RUNTIME, 0, "alphabet 'from' must contain at least 2 characters"); | |
| lookup = abc_lookup; | |
| memset(abc_lookup,0,sizeof(abc_lookup)); | |
| for(int i=0; i<base_from; i++) abc_lookup[(unsigned char)abc_from[i]] = (unsigned char)i; | |
| } else { | |
| base_from=params.as_int(1, "base 'from' must be integer or string", r); | |
| if(base_from < 2 || base_from > 16 && base_from != 256) | |
| throw Exception(PARSER_RUNTIME, 0, "base 'from' must be an integer from 2 to 16 or 256"); | |
| if (base_from == 256){ | |
| abc_from = ""; | |
| lookup = init_abc_256(); | |
| } else { | |
| abc_mode = false; | |
| abc_from = abc_hex; | |
| lookup = hex_lookup; | |
| } | |
| } | |
| const char *abc_to; | |
| int base_to; | |
| int base_to=params.as_int(2, "base to must be integer", r); | if(params[2].is_string()){ |
| if(base_to < 2 || base_to > 16) | abc_to=params[2].get_string()->cstr(); |
| throw Exception(PARSER_RUNTIME, 0, "base to must be an integer from 2 to 16"); | base_to=strlen(abc_to); |
| if(base_to < 2) | |
| throw Exception(PARSER_RUNTIME, 0, "alphabet 'to' must contain at least 2 characters"); | |
| } else { | |
| base_to=params.as_int(2, "base 'to' must be integer or string", r); | |
| if(base_to < 2 || base_to > 16 && base_to != 256) | |
| throw Exception(PARSER_RUNTIME, 0, "base 'to' must be an integer from 2 to 16 or 256"); | |
| if (base_to == 256){ | |
| abc_to = (char *)init_abc_256(); | |
| } else { | |
| abc_to = abc_hex; | |
| } | |
| } | |
| while(isspace(*str)) | VFile* result_file = 0; |
| str++; | |
| if(!*str) | if(params.count() == 4) |
| return; | if(HashStringValue* options=params.as_hash(3)) { |
| int valid_options=0; | |
| if(Value* value=options->get("format")) { | |
| const String& sformat=value->as_string(); | |
| if (sformat == "file" ) result_file = new VFile; | |
| else if (sformat != "string") throw Exception(PARSER_RUNTIME, &sformat, "must be 'string' or 'file'"); | |
| valid_options++; | |
| } | |
| if(valid_options!=options->count()) | |
| throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION); | |
| } | |
| bool negative=false; | bool negative=false; |
| if(str[0]=='-') { | bool sign=false; |
| negative=true; | |
| str++; | // converting digits to their numeric values |
| } else if(str[0]=='+') { | |
| str++; | unsigned char *src=(unsigned char *)pa_strdup(data.str, data.length); |
| const unsigned char *src_end = src + data.length; | |
| unsigned char *c; | |
| if(abc_mode){ | |
| for(c=src;c<src_end;c++){ | |
| unsigned char digit=lookup[*c]; | |
| if(!digit && *c != abc_from[0]) | |
| throw Exception("number.format", 0, "'%c' is invalid digit", *c); | |
| *c=digit; | |
| } | |
| } else { | |
| // numbers mode, allow whitespace and sign | |
| while(isspace(*src)) | |
| src++; | |
| if(src[0]=='-') { | |
| negative=true; | |
| sign=true; | |
| src++; | |
| } else if(src[0]=='+') { | |
| sign=true; | |
| src++; | |
| } | |
| for(c=src;c<src_end;c++) { | |
| unsigned char digit=lookup[*c]; | |
| if(!digit && *c != abc_from[0] || digit>=base_from) { | |
| for(unsigned char *s=c;s<src_end;s++) | |
| if(!isspace(*s)) | |
| throw Exception("number.format", 0, "'%c' is invalid digit", *s); | |
| src_end=c; | |
| break; | |
| } | |
| *c=digit; | |
| } | |
| } | |
| if(src==src_end){ | |
| if(sign) | |
| throw Exception("number.format", 0, "'%c' is invalid number", negative ? '-' : '+'); | |
| if(result_file) | |
| r.write(*result_file); | |
| return; | |
| } | } |
| unsigned long long int value=pa_atoul(str, base_from); | // core |
| char result_cstr[sizeof(unsigned long long int)*8+1/*minus for negative number*/+1/*terminator*/]; | Array<char> remainders(round(data.length * log2(base_from) / log2(base_to)) + 1); |
| char* ptr=result_cstr; | |
| if(negative) | do { |
| *ptr++='-'; | int carry = 0; |
| unsigned char *dst = src; | |
| for (c=src; c<src_end; c++) { | |
| carry = carry * base_from + *c; | |
| if (carry >= base_to) { | |
| *(dst++) = carry / base_to; | |
| carry %= base_to; | |
| } else if (dst > src) { | |
| *(dst++) = 0; | |
| } | |
| } | |
| src_end = dst; | |
| remainders += abc_to[carry]; | |
| } while (src_end > src); | |
| toBase(value, base_to, ptr); | // result processing |
| *ptr=0; | |
| r.write_pass_lang(*new String(pa_strdup(result_cstr))); | size_t result_length = negative + remainders.count(); |
| char *result_str = (char *)pa_malloc_atomic(result_length+1); | |
| if(negative) | |
| result_str[0] = '-'; | |
| for(int i=0; i<remainders.count(); i++) | |
| result_str[result_length - 1 - i] = remainders[i]; | |
| result_str[result_length]='\0'; | |
| if(result_file){ | |
| result_file->set(true/*tainted*/, 0 /*binary*/, result_str, result_length, 0, 0, &r); | |
| r.write(*result_file); | |
| } else { | |
| r.write(*new String(result_str)); // no length as there can be '\0' inside | |
| } | |
| } | } |
| // constructor | // constructor |
| Line 568 MMath::MMath(): Methoded("math") { | Line 686 MMath::MMath(): Methoded("math") { |
| ADD1(abs); ADD1(sign); | ADD1(abs); ADD1(sign); |
| ADD1(exp); | ADD1(exp); |
| ADD1(log); ADD1(log10); | ADD1(log); ADD1(log10); |
| ADD1(sin); ADD1(asin); | ADD1(sin); ADD1(asin); |
| ADD1(cos); ADD1(acos); | ADD1(cos); ADD1(acos); |
| ADD1(tan); ADD1(atan); | ADD1(tan); ADD1(atan); |
| ADD1(degrees); ADD1(radians); | ADD1(degrees); ADD1(radians); |
| ADD1(sqrt); | ADD1(sqrt); |
| Line 599 MMath::MMath(): Methoded("math") { | Line 717 MMath::MMath(): Methoded("math") { |
| // ^math:uid64[] | // ^math:uid64[] |
| ADD0(uid64); | ADD0(uid64); |
| // ^math:convert[number](base-from;base-to) | // ^math:convert[number|file](base-from)|[abc_from](base-to)|[abc_to][options] |
| add_native_method("convert", Method::CT_STATIC, _convert, 3, 3); | add_native_method("convert", Method::CT_STATIC, _convert, 3, 4); |
| } | } |