--- parser3/src/classes/math.C 2001/10/19 12:43:29 1.7 +++ parser3/src/classes/math.C 2012/05/28 10:33:18 1.61 @@ -1,88 +1,92 @@ /** @file Parser: @b math parser class. - Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) - Author: Alexander Petrosyan (http://design.ru/paf) + Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com) + Author: Alexandr Petrosian (http://paf.design.ru) - $Id: math.C,v 1.7 2001/10/19 12:43:29 parser Exp $ + portions from gen_uuid.c, + Copyright (C) 1996, 1997, 1998, 1999 Theodore Ts'o. */ -#include "pa_config_includes.h" +#include "pa_vmethod_frame.h" #include "pa_common.h" #include "pa_vint.h" #include "pa_vmath.h" #include "pa_request.h" +#include "pa_md5.h" +#include "pa_random.h" #ifdef WIN32 +# define _WIN32_WINNT 0x400 # include +# include #endif +#ifdef HAVE_CRYPT +# ifdef HAVE_CRYPT_H +# include +# endif +#else + extern char *crypt(const char* , const char* ); +#endif + +volatile const char * IDENT_MATH_C="$Id: math.C,v 1.61 2012/05/28 10:33:18 moko Exp $"; + // defines -#define PI 3.1415926535 -#define MATH_CLASS_NAME "math" +#define MAX_SALT 8 // class -class MMath : public Methoded { +class MMath: public Methoded { public: - MMath(Pool& pool); - void configure_admin(Request& r); + MMath(); public: // Methoded - bool used_directly() { return true; } + bool used_directly() { return false; } }; +// global variables + +DECLARE_CLASS_VAR(math, 0 /*fictive*/, new MMath); + // methods -static unsigned int randomizer=0; -static void _random(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - - Value& range=params->as_junction(0, "range must be expression"); - uint max=(uint)r.process(range).as_double(); - if(max<=1) - throw Exception(0, 0, - &method_name, - "bad range [0..%u]", max); + +static void _random(Request& r, MethodParams& params) { + double top=params.as_double(0, "range must be expression", r); + if(top<=0 || top>MAX_UINT) + throw Exception(PARSER_RUNTIME, + 0, + "top(%g) must be [1..%u]", top, MAX_UINT); - Value& result=*new(pool) VInt(pool, (int)( - ((double)((randomizer=rand())% RAND_MAX)) / RAND_MAX * (max + 1))); - result.set_name(method_name); - r.write_no_lang(result); + r.write_no_lang(*new VInt(_random(uint(top)))); } -typedef double (*math1_func_ptr)(double); -static double round(double param) { return floor(param+0.5); } -static double sign(double param) { return param > 0 ? 1 : ( param < 0 ? -1 : 0 ); } -static double trunc(double param) { return param > 0? floor(param) : ceil(param); } +typedef double(*math1_func_ptr)(double); static double frac(double param) { return param-trunc(param); } static double degrees(double param) { return param /PI *180; } static double radians(double param) { return param /180 *PI; } -static void math1(Request& r, - const String& method_name, MethodParams *params, - math1_func_ptr func) { - Pool& pool=r.pool(); - Value& param=params->as_junction(0, "parameter must be expression"); - - Value& result=*new(pool) VDouble(pool, (*func)(r.process(param).as_double())); - result.set_name(method_name); - r.write_no_lang(result); +static void math1(Request& r, MethodParams& params, math1_func_ptr func) { + double param=params.as_double(0, "parameter must be expression", r); + double result=func(param); + r.write_no_lang(*new VDouble(result)); } #define MATH1(name) \ - static void _##name(Request& r, const String& method_name, MethodParams *params) {\ - math1(r, method_name, params, &name);\ + static void _##name(Request& r, MethodParams& params) {\ + math1(r, params, &name);\ } #define MATH1P(name_parser, name_c) \ - static void _##name_parser(Request& r, const String& method_name, MethodParams *params) {\ - math1(r, method_name, params, &name_c);\ + static void _##name_parser(Request& r, MethodParams& params) {\ + math1(r, params, &name_c);\ } MATH1(round); MATH1(floor); MATH1P(ceiling, ceil); MATH1(trunc); MATH1(frac); MATH1P(abs, fabs); MATH1(sign); -MATH1(exp); MATH1(log); +MATH1(exp); +MATH1(log); MATH1(log10); MATH1(sin); MATH1(asin); MATH1(cos); MATH1(acos); MATH1(tan); MATH1(atan); @@ -91,39 +95,328 @@ MATH1(sqrt); typedef double (*math2_func_ptr)(double, double); -static void math2(Request& r, - const String& method_name, MethodParams *params, - math2_func_ptr func) { - Pool& pool=r.pool(); - Value& a=params->as_junction(0, "parameter must be expression"); - Value& b=params->as_junction(1, "parameter must be expression"); - - Value& result=*new(pool) VDouble(pool, (*func)( - r.process(a).as_double(), - r.process(b).as_double())); - result.set_name(method_name); - r.write_no_lang(result); +static void math2(Request& r, MethodParams& params, math2_func_ptr func) { + double a=params.as_double(0, "parameter must be expression", r); + double b=params.as_double(1, "parameter must be expression", r); + double result=func(a, b); + r.write_no_lang(*new VDouble(result)); } #define MATH2(name) \ - static void _##name(Request& r, const String& method_name, MethodParams *params) {\ - math2(r, method_name, params, &name);\ + static void _##name(Request& r, MethodParams& params) {\ + math2(r, params, &name);\ } MATH2(pow); +inline bool is_salt_body_char(int c) { + return isalnum(c) || c == '.' || c=='/'; +} +static size_t calc_prefix_size(const char* salt) { + if(strlen(salt)) { + if(!is_salt_body_char((unsigned char)salt[0])) { // $... {... + const char* cur=salt+1; // skip + while(is_salt_body_char((unsigned char)*cur++)) // ...$ ...} + ; + return cur-salt; + } else + return 0; + } else + return 0; +} +static void _crypt(Request& r, MethodParams& params) { + const char* password=params.as_string(0, "password must be string").cstr(); + const char* maybe_bodyless_salt=params.as_string(1, "salt must be string").cstr(); + + size_t prefix_size=calc_prefix_size(maybe_bodyless_salt); + const char* normal_salt; + char normalize_buf[MAX_STRING]; + if(prefix_size==strlen(maybe_bodyless_salt)) { // bodyless? + strncpy(normalize_buf, maybe_bodyless_salt, MAX_STRING-MAX_SALT-1); + char *cur=normalize_buf+strlen(normalize_buf); + // sould add up MAX_SALT random chars + static unsigned char itoa64[] = /* 0 ... 63 => ASCII - 64 */ + "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; + for(int i=0; i> (32-(bits)))) +void SHA1ProcessMessageBlock(SHA1Context *); +void SHA1PadMessage(SHA1Context *); +void SHA1Reset(SHA1Context *context) { + context->Length_Low = context->Length_High = context->Message_Block_Index = 0; + context->Message_Digest[0] = 0x67452301; + context->Message_Digest[1] = 0xEFCDAB89; + context->Message_Digest[2] = 0x98BADCFE; + context->Message_Digest[3] = 0x10325476; + context->Message_Digest[4] = 0xC3D2E1F0; + context->Computed = context->Corrupted = 0; +} + +int SHA1Result(SHA1Context *context) { + if (context->Corrupted) + return 0; + if (!context->Computed) { + SHA1PadMessage(context); + context->Computed = 1; + } + return 1; +} + +void SHA1Input(SHA1Context *context, const unsigned char *message_array, unsigned length) { + if (!length) + return; + if (context->Computed || context->Corrupted) { + context->Corrupted = 1; + return; + } + + while(length-- && !context->Corrupted) { + context->Message_Block[context->Message_Block_Index++] = (*message_array & 0xFF); + context->Length_Low += 8; + context->Length_Low &= 0xFFFFFFFF; + if (!context->Length_Low && !(context->Length_High=((1+context->Length_High)&0xFFFFFFFF))) + context->Corrupted = 1; // too long message + if (context->Message_Block_Index == 64) + SHA1ProcessMessageBlock(context); + message_array++; + } +} + +void SHA1ProcessMessageBlock(SHA1Context *context) { + const unsigned K[] = {0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xCA62C1D6 }; + int t; + unsigned temp, W[80], buf[5]; + unsigned &A=buf[0], &B=buf[1], &C=buf[2], &D=buf[3], &E=buf[4]; + + for(t = 0; t < 16; t++) + W[t] = (((unsigned) context->Message_Block[t * 4]) << 24) | (((unsigned) context->Message_Block[t * 4 + 1]) << 16) | (((unsigned) context->Message_Block[t * 4 + 2]) << 8) | ((unsigned) context->Message_Block[t * 4 + 3]); + + for(t = 16; t < 80; t++) + W[t] = SHA1CircularShift(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]); + + memcpy (buf, context->Message_Digest, sizeof(buf)); + for(t = 0; t < 20; t++) { + temp = (SHA1CircularShift(5,A) + ((B & C) | ((~B) & D)) + E + W[t] + K[0]) & 0xFFFFFFFF; + E = D; D = C; + C = SHA1CircularShift(30,B); + B = A; A = temp; + } + + for(t = 20; t < 40; t++) { + temp = (SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[1]) & 0xFFFFFFFF; + E = D; D = C; + C = SHA1CircularShift(30,B); + B = A; A = temp; + } + + for(t = 40; t < 60; t++) { + temp = (SHA1CircularShift(5,A) + ((B & C) | (B & D) | (C & D)) + E + W[t] + K[2]) & 0xFFFFFFFF; + E = D; D = C; + C = SHA1CircularShift(30,B); + B = A; A = temp; + } + + for(t = 60; t < 80; t++) { + temp = (SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[3]) & 0xFFFFFFFF; + E = D; D = C; + C = SHA1CircularShift(30,B); + B = A; A = temp; + } + + for (t = 0; t < 5; t++) + context->Message_Digest[t] = (context->Message_Digest[t] + buf[t]) & 0xFFFFFFFF; + + context->Message_Block_Index = 0; +} + +void SHA1PadMessage(SHA1Context *context) { + context->Message_Block[context->Message_Block_Index++] = 0x80; + if (context->Message_Block_Index > 56) { + //was 55, one shift + while(context->Message_Block_Index < 64) + context->Message_Block[context->Message_Block_Index++] = 0; + SHA1ProcessMessageBlock(context); + while(context->Message_Block_Index < 56) + context->Message_Block[context->Message_Block_Index++] = 0; + } else + while(context->Message_Block_Index < 56) + context->Message_Block[context->Message_Block_Index++] = 0; + context->Message_Block[56] = (context->Length_High >> 24) & 0xFF; + context->Message_Block[57] = (context->Length_High >> 16) & 0xFF; + context->Message_Block[58] = (context->Length_High >> 8) & 0xFF; + context->Message_Block[59] = (context->Length_High) & 0xFF; + context->Message_Block[60] = (context->Length_Low >> 24) & 0xFF; + context->Message_Block[61] = (context->Length_Low >> 16) & 0xFF; + context->Message_Block[62] = (context->Length_Low >> 8) & 0xFF; + context->Message_Block[63] = (context->Length_Low) & 0xFF; + SHA1ProcessMessageBlock(context); +} + +static void _sha1(Request& r, MethodParams& params) { + const char *string = params.as_string(0, PARAMETER_MUST_BE_STRING).cstr(); + + SHA1Context c; + SHA1Reset (&c); + SHA1Input (&c, (const unsigned char*)string, strlen(string)); + if(!SHA1Result(&c)) + throw Exception (PARSER_RUNTIME, 0, "Can not compute SHA1"); + + const size_t bufsize=40+1/*zero-teminator*/+1/*for faulty snprintfs*/; + char* cstr=new(PointerFreeGC) char[bufsize]; + + snprintf(cstr, bufsize, + "%08x%08x%08x%08x%08x", + c.Message_Digest[0], + c.Message_Digest[1], + c.Message_Digest[2], + c.Message_Digest[3], + c.Message_Digest[4]); + + r.write_pass_lang(*new String(cstr)); +} + +static void _uuid(Request& r, MethodParams& /*params*/) { + uuid uuid=get_uuid(); + + 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*/) { + + unsigned char id[64/8]; + random(&id, sizeof(id)); + + r.write_pass_lang(*new String(hex_string(id, sizeof(id), true))); +} + +static void _crc32(Request& r, MethodParams& params) { + const char *string=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr(); + r.write_no_lang(*new VInt(pa_crc32(string, strlen(string)))); +} + +static void toBase(unsigned int value, unsigned int base, char*& ptr){ + static const char* hex="0123456789ABCDEF"; + int rest = value % base; + if(value >= base) + toBase( (value-rest)/base, base, ptr); + *ptr++=(char)hex[rest]; +} + +static void _convert(Request& r, MethodParams& params) { + const char *str=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr(); + + int base_from=params.as_int(1, "base from must be integer", r); + if(base_from < 2 || base_from > 16) + throw Exception(PARSER_RUNTIME, 0, "base from must be an integer from 2 to 16"); + + int base_to=params.as_int(2, "base to must be integer", r); + if(base_to < 2 || base_to > 16) + throw Exception(PARSER_RUNTIME, 0, "base to must be an integer from 2 to 16"); + + while(isspace(*str)) + str++; + + if(!*str) + return; + + bool negative=false; + if(str[0]=='-') { + negative=true; + str++; + } else if(str[0]=='+') { + str++; + } + + unsigned int value=pa_atoui(str, base_from); + + char result_cstr[sizeof(unsigned int)*8+1/*minus for negative number*/+1/*terminator*/]; + char* ptr=result_cstr; + if(negative) + *ptr++='-'; + + toBase(value, base_to, ptr); + *ptr=0; + r.write_pass_lang(*new String(pa_strdup(result_cstr))); +} + // constructor -MMath::MMath(Pool& apool) : Methoded(apool) { - set_name(*NEW String(pool(), MATH_CLASS_NAME)); - +MMath::MMath(): Methoded("math") { // ^FUNC(expr) -#define ADD1(name) \ - add_native_method(#name, Method::CT_STATIC, _##name, 1, 1) +#define ADDX(name, X) \ + add_native_method(#name, Method::CT_STATIC, _##name, X, X) +#define ADD0(name) ADDX(name, 0) +#define ADD1(name) ADDX(name, 1) +#define ADD2(name) ADDX(name, 2) ADD1(round); ADD1(floor); ADD1(ceiling); ADD1(trunc); ADD1(frac); ADD1(abs); ADD1(sign); - ADD1(exp); ADD1(log); + ADD1(exp); + ADD1(log); ADD1(log10); ADD1(sin); ADD1(asin); ADD1(cos); ADD1(acos); ADD1(tan); ADD1(atan); @@ -131,44 +424,27 @@ MMath::MMath(Pool& apool) : Methoded(apo ADD1(sqrt); ADD1(random); -#define ADD2(name) \ - add_native_method(#name, Method::CT_STATIC, _##name, 2, 2) - - // ^pow(x;y) + // ^math:pow(x;y) ADD2(pow); -} + // ^math:crypt[password;salt] + ADD2(crypt); -// in MSVC each thread has it's own pseudo-random sequence -// in win32 apache each thread can handle multiple requests -// so to get proper randoms we remember random generated in one thread -void MMath::configure_admin(Request&) { - // setting seed - srand( - randomizer ^ -#ifdef WIN32 - GetCurrentThreadId() ^ -#else - getpid() ^ -#endif - (unsigned int)time(NULL) - ); - if(!randomizer) - randomizer=rand(); -} - -// global variables + // ^math:md5[string] + ADD1(md5); -Methoded *math_base_class; -Hash *math_consts; + // ^math:sha1[string] + ADD1(sha1); + + // ^math:crc32[string] + ADD1(crc32); -// creator + // ^math:uuid[] + ADD0(uuid); -Methoded *MMath_create(Pool& pool) { - math_consts=new(pool) Hash(pool); - math_consts->put( - *new(pool) String(pool, "PI"), - new(pool) VDouble(pool, PI)); + // ^math:uid64[] + ADD0(uid64); - return math_base_class=new(pool) MMath(pool); + // ^math:convert[number](base-from;base-to) + add_native_method("convert", Method::CT_STATIC, _convert, 3, 3); }