Annotation of parser3/src/classes/math.C, revision 1.66
1.1 parser 1: /** @file
2: Parser: @b math parser class.
3:
1.59 moko 4: Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com)
1.20 paf 5: Author: Alexandr Petrosian <paf@design.ru>(http://paf.design.ru)
1.28 paf 6:
7: portions from gen_uuid.c,
8: Copyright (C) 1996, 1997, 1998, 1999 Theodore Ts'o.
1.22 paf 9: */
1.1 parser 10:
1.34 paf 11: #include "pa_vmethod_frame.h"
1.1 parser 12: #include "pa_common.h"
13: #include "pa_vint.h"
1.2 parser 14: #include "pa_vmath.h"
1.1 parser 15: #include "pa_request.h"
1.19 paf 16: #include "pa_md5.h"
1.65 moko 17: #include "pa_sha2.h"
1.55 misha 18: #include "pa_random.h"
1.1 parser 19:
1.5 parser 20: #ifdef WIN32
1.28 paf 21: # define _WIN32_WINNT 0x400
1.5 parser 22: # include <windows.h>
1.28 paf 23: # include <wincrypt.h>
1.5 parser 24: #endif
25:
1.34 paf 26: #ifdef HAVE_CRYPT
1.66 ! moko 27: extern char *crypt(const char* , const char* );
1.20 paf 28: #endif
29:
1.66 ! moko 30: volatile const char * IDENT_MATH_C="$Id: math.C,v 1.65 2013/07/12 21:23:29 moko Exp $";
1.59 moko 31:
1.1 parser 32: // defines
33:
1.20 paf 34: #define MAX_SALT 8
1.1 parser 35:
36: // class
37:
1.34 paf 38: class MMath: public Methoded {
1.1 parser 39: public:
1.34 paf 40: MMath();
1.5 parser 41:
1.1 parser 42: public: // Methoded
1.15 paf 43: bool used_directly() { return false; }
1.1 parser 44: };
45:
1.34 paf 46: // global variables
47:
48: DECLARE_CLASS_VAR(math, 0 /*fictive*/, new MMath);
49:
1.1 parser 50: // methods
1.34 paf 51:
52: static void _random(Request& r, MethodParams& params) {
1.41 paf 53: double top=params.as_double(0, "range must be expression", r);
1.34 paf 54: if(top<=0 || top>MAX_UINT)
1.45 misha 55: throw Exception(PARSER_RUNTIME,
1.34 paf 56: 0,
57: "top(%g) must be [1..%u]", top, MAX_UINT);
1.1 parser 58:
1.34 paf 59: r.write_no_lang(*new VInt(_random(uint(top))));
1.1 parser 60: }
61:
62:
1.20 paf 63: typedef double(*math1_func_ptr)(double);
1.3 parser 64: static double frac(double param) { return param-trunc(param); }
65: static double degrees(double param) { return param /PI *180; }
66: static double radians(double param) { return param /180 *PI; }
1.1 parser 67:
1.34 paf 68: static void math1(Request& r, MethodParams& params, math1_func_ptr func) {
1.41 paf 69: double param=params.as_double(0, "parameter must be expression", r);
70: double result=func(param);
1.34 paf 71: r.write_no_lang(*new VDouble(result));
1.1 parser 72: }
73:
74: #define MATH1(name) \
1.34 paf 75: static void _##name(Request& r, MethodParams& params) {\
76: math1(r, params, &name);\
1.1 parser 77: }
78: #define MATH1P(name_parser, name_c) \
1.34 paf 79: static void _##name_parser(Request& r, MethodParams& params) {\
80: math1(r, params, &name_c);\
1.1 parser 81: }
82: MATH1(round); MATH1(floor); MATH1P(ceiling, ceil);
1.3 parser 83: MATH1(trunc); MATH1(frac);
1.1 parser 84: MATH1P(abs, fabs); MATH1(sign);
1.46 misha 85: MATH1(exp);
1.48 misha 86: MATH1(log); MATH1(log10);
1.1 parser 87: MATH1(sin); MATH1(asin);
88: MATH1(cos); MATH1(acos);
89: MATH1(tan); MATH1(atan);
1.3 parser 90: MATH1(degrees); MATH1(radians);
1.1 parser 91: MATH1(sqrt);
92:
93:
94: typedef double (*math2_func_ptr)(double, double);
1.34 paf 95: static void math2(Request& r, MethodParams& params, math2_func_ptr func) {
1.41 paf 96: double a=params.as_double(0, "parameter must be expression", r);
97: double b=params.as_double(1, "parameter must be expression", r);
98: double result=func(a, b);
1.34 paf 99: r.write_no_lang(*new VDouble(result));
1.1 parser 100: }
101:
102: #define MATH2(name) \
1.34 paf 103: static void _##name(Request& r, MethodParams& params) {\
104: math2(r, params, &name);\
1.1 parser 105: }
106: MATH2(pow);
107:
1.20 paf 108: inline bool is_salt_body_char(int c) {
109: return isalnum(c) || c == '.' || c=='/';
110: }
1.34 paf 111: static size_t calc_prefix_size(const char* salt) {
1.37 paf 112: if(strlen(salt)) {
1.39 paf 113: if(!is_salt_body_char((unsigned char)salt[0])) { // $... {...
1.34 paf 114: const char* cur=salt+1; // skip
1.39 paf 115: while(is_salt_body_char((unsigned char)*cur++)) // ...$ ...}
1.20 paf 116: ;
117: return cur-salt;
118: } else
119: return 0;
120: } else
121: return 0;
122: }
1.34 paf 123: static void _crypt(Request& r, MethodParams& params) {
124: const char* password=params.as_string(0, "password must be string").cstr();
125: const char* maybe_bodyless_salt=params.as_string(1, "salt must be string").cstr();
1.20 paf 126:
127: size_t prefix_size=calc_prefix_size(maybe_bodyless_salt);
1.34 paf 128: const char* normal_salt;
1.20 paf 129: char normalize_buf[MAX_STRING];
130: if(prefix_size==strlen(maybe_bodyless_salt)) { // bodyless?
131: strncpy(normalize_buf, maybe_bodyless_salt, MAX_STRING-MAX_SALT-1);
132: char *cur=normalize_buf+strlen(normalize_buf);
133: // sould add up MAX_SALT random chars
134: static unsigned char itoa64[] = /* 0 ... 63 => ASCII - 64 */
135: "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
136: for(int i=0; i<MAX_SALT; i++)
137: *cur++=itoa64[_random(64)];
138: *cur=0;
139: normal_salt=normalize_buf;
140: } else
141: normal_salt=maybe_bodyless_salt;
1.19 paf 142:
1.54 misha 143: /* FreeBSD style MD5 string
144: */
145: if(strncmp(normal_salt, PA_MD5PW_ID, PA_MD5PW_IDLEN) == 0) {
1.19 paf 146: const size_t sample_size=120;
1.34 paf 147: char *sample_buf=new(PointerFreeGC) char[sample_size];
148: pa_MD5Encode((const unsigned char *)password,
149: (const unsigned char *)normal_salt, sample_buf, sample_size);
150: String sample(sample_buf);
151: r.write_pass_lang(sample);
1.54 misha 152: } else {
1.20 paf 153: #ifdef HAVE_CRYPT
1.34 paf 154: const char* static_sample_buf=crypt(password, normal_salt);
155: if(!static_sample_buf // nothing generated
156: || !static_sample_buf[0] // generated nothing
157: || strncmp(static_sample_buf, normal_salt, prefix_size)!=0) // salt prefix not preserved
1.45 misha 158: throw Exception(PARSER_RUNTIME,
1.34 paf 159: 0,
160: "crypt on this platform does not support '%.*s' salt prefix", prefix_size, normal_salt);
1.20 paf 161:
1.34 paf 162: r.write_pass_lang(String(pa_strdup(static_sample_buf)));
1.20 paf 163: #else
1.45 misha 164: throw Exception(PARSER_RUNTIME,
1.34 paf 165: 0,
1.19 paf 166: "salt must start with '" PA_MD5PW_ID "'");
1.20 paf 167: #endif
168: }
1.19 paf 169: }
170:
1.34 paf 171: static void _md5(Request& r, MethodParams& params) {
1.51 misha 172: const char *string=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr();
1.27 paf 173:
174: PA_MD5_CTX context;
175: unsigned char digest[16];
1.34 paf 176: pa_MD5Init(&context);
177: pa_MD5Update(&context, (const unsigned char*)string, strlen(string));
178: pa_MD5Final(digest, &context);
1.27 paf 179:
1.34 paf 180: r.write_pass_lang(*new String(hex_string(digest, sizeof(digest), false)));
1.26 paf 181: }
182:
1.49 misha 183:
184: //SHA-1:
185:
1.50 misha 186: struct SHA1Context {
1.54 misha 187: unsigned Message_Digest[5], Length_Low, Length_High;
188: unsigned int Message_Block[64];
189: int Message_Block_Index, Computed, Corrupted;
1.50 misha 190: };
1.49 misha 191:
192: #define SHA1CircularShift(bits,word) ((((word) << (bits)) & 0xFFFFFFFF)|((word) >> (32-(bits))))
193: void SHA1ProcessMessageBlock(SHA1Context *);
194: void SHA1PadMessage(SHA1Context *);
1.50 misha 195: void SHA1Reset(SHA1Context *context) {
1.54 misha 196: context->Length_Low = context->Length_High = context->Message_Block_Index = 0;
197: context->Message_Digest[0] = 0x67452301;
198: context->Message_Digest[1] = 0xEFCDAB89;
199: context->Message_Digest[2] = 0x98BADCFE;
200: context->Message_Digest[3] = 0x10325476;
201: context->Message_Digest[4] = 0xC3D2E1F0;
202: context->Computed = context->Corrupted = 0;
1.50 misha 203: }
1.49 misha 204:
1.50 misha 205: int SHA1Result(SHA1Context *context) {
1.54 misha 206: if (context->Corrupted)
207: return 0;
208: if (!context->Computed) {
209: SHA1PadMessage(context);
210: context->Computed = 1;
211: }
212: return 1;
213: }
214:
215: void SHA1Input(SHA1Context *context, const unsigned char *message_array, unsigned length) {
216: if (!length)
217: return;
218: if (context->Computed || context->Corrupted) {
219: context->Corrupted = 1;
220: return;
221: }
222:
223: while(length-- && !context->Corrupted) {
224: context->Message_Block[context->Message_Block_Index++] = (*message_array & 0xFF);
225: context->Length_Low += 8;
226: context->Length_Low &= 0xFFFFFFFF;
227: if (!context->Length_Low && !(context->Length_High=((1+context->Length_High)&0xFFFFFFFF)))
228: context->Corrupted = 1; // too long message
229: if (context->Message_Block_Index == 64)
230: SHA1ProcessMessageBlock(context);
231: message_array++;
1.49 misha 232: }
1.50 misha 233: }
1.49 misha 234:
1.50 misha 235: void SHA1ProcessMessageBlock(SHA1Context *context) {
1.54 misha 236: const unsigned K[] = {0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xCA62C1D6 };
237: int t;
238: unsigned temp, W[80], buf[5];
239: unsigned &A=buf[0], &B=buf[1], &C=buf[2], &D=buf[3], &E=buf[4];
1.50 misha 240:
1.54 misha 241: for(t = 0; t < 16; t++)
242: 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]);
1.50 misha 243:
1.54 misha 244: for(t = 16; t < 80; t++)
245: W[t] = SHA1CircularShift(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]);
1.49 misha 246:
1.54 misha 247: memcpy (buf, context->Message_Digest, sizeof(buf));
248: for(t = 0; t < 20; t++) {
249: temp = (SHA1CircularShift(5,A) + ((B & C) | ((~B) & D)) + E + W[t] + K[0]) & 0xFFFFFFFF;
250: E = D; D = C;
251: C = SHA1CircularShift(30,B);
252: B = A; A = temp;
1.49 misha 253: }
254:
1.54 misha 255: for(t = 20; t < 40; t++) {
256: temp = (SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[1]) & 0xFFFFFFFF;
257: E = D; D = C;
258: C = SHA1CircularShift(30,B);
259: B = A; A = temp;
1.49 misha 260: }
261:
1.54 misha 262: for(t = 40; t < 60; t++) {
263: temp = (SHA1CircularShift(5,A) + ((B & C) | (B & D) | (C & D)) + E + W[t] + K[2]) & 0xFFFFFFFF;
264: E = D; D = C;
265: C = SHA1CircularShift(30,B);
266: B = A; A = temp;
1.49 misha 267: }
268:
1.54 misha 269: for(t = 60; t < 80; t++) {
270: temp = (SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[3]) & 0xFFFFFFFF;
271: E = D; D = C;
272: C = SHA1CircularShift(30,B);
273: B = A; A = temp;
1.49 misha 274: }
275:
1.54 misha 276: for (t = 0; t < 5; t++)
277: context->Message_Digest[t] = (context->Message_Digest[t] + buf[t]) & 0xFFFFFFFF;
1.50 misha 278:
1.54 misha 279: context->Message_Block_Index = 0;
1.50 misha 280: }
1.49 misha 281:
1.50 misha 282: void SHA1PadMessage(SHA1Context *context) {
1.54 misha 283: context->Message_Block[context->Message_Block_Index++] = 0x80;
1.50 misha 284: if (context->Message_Block_Index > 56) {
285: //was 55, one shift
1.54 misha 286: while(context->Message_Block_Index < 64)
287: context->Message_Block[context->Message_Block_Index++] = 0;
288: SHA1ProcessMessageBlock(context);
289: while(context->Message_Block_Index < 56)
290: context->Message_Block[context->Message_Block_Index++] = 0;
1.50 misha 291: } else
1.54 misha 292: while(context->Message_Block_Index < 56)
293: context->Message_Block[context->Message_Block_Index++] = 0;
294: context->Message_Block[56] = (context->Length_High >> 24) & 0xFF;
295: context->Message_Block[57] = (context->Length_High >> 16) & 0xFF;
296: context->Message_Block[58] = (context->Length_High >> 8) & 0xFF;
297: context->Message_Block[59] = (context->Length_High) & 0xFF;
298: context->Message_Block[60] = (context->Length_Low >> 24) & 0xFF;
299: context->Message_Block[61] = (context->Length_Low >> 16) & 0xFF;
300: context->Message_Block[62] = (context->Length_Low >> 8) & 0xFF;
301: context->Message_Block[63] = (context->Length_Low) & 0xFF;
302: SHA1ProcessMessageBlock(context);
1.50 misha 303: }
1.49 misha 304:
1.62 moko 305: #ifdef PA_BIG_ENDIAN
306: #define SWAP(n) (n)
307: #else
308: #define SWAP(n) (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))
309: #endif
310:
1.64 moko 311: void SHA1ReadDigest(void *buf, SHA1Context *c)
1.62 moko 312: {
1.64 moko 313: if(!SHA1Result(c))
1.62 moko 314: throw Exception (PARSER_RUNTIME, 0, "Can not compute SHA1");
315:
1.64 moko 316: ((uint32_t *)buf)[0] = SWAP(c->Message_Digest[0]);
317: ((uint32_t *)buf)[1] = SWAP(c->Message_Digest[1]);
318: ((uint32_t *)buf)[2] = SWAP(c->Message_Digest[2]);
319: ((uint32_t *)buf)[3] = SWAP(c->Message_Digest[3]);
320: ((uint32_t *)buf)[4] = SWAP(c->Message_Digest[4]);
1.62 moko 321: }
322:
1.54 misha 323: static void _sha1(Request& r, MethodParams& params) {
324: const char *string = params.as_string(0, PARAMETER_MUST_BE_STRING).cstr();
1.49 misha 325:
1.54 misha 326: SHA1Context c;
1.64 moko 327: unsigned char digest[20];
1.54 misha 328: SHA1Reset (&c);
329: SHA1Input (&c, (const unsigned char*)string, strlen(string));
1.64 moko 330: SHA1ReadDigest(digest, &c);
1.54 misha 331:
1.62 moko 332: r.write_pass_lang(*new String(hex_string(digest, sizeof(digest), false)));
333: }
334:
1.64 moko 335: void memxor(char *dest, const char *src, size_t n){
336: for (;n>0;n--) *dest++ ^= *src++;
337: }
338:
1.62 moko 339: #define IPAD 0x36
340: #define OPAD 0x5c
341:
1.65 moko 342: #define HMAC(key,init,update,final,blocklen,digestlen){ \
1.64 moko 343: unsigned char tempdigest[digestlen], keydigest[digestlen]; \
344: size_t keylen=strlen(key); \
1.65 moko 345: /* Reduce the key's size, so that it becomes <= blocklen bytes. */ \
346: if (keylen > blocklen){ \
1.64 moko 347: init(&c); \
348: update(&c,(const unsigned char*)hmac, keylen); \
349: final(keydigest, &c); \
350: key = (char *)keydigest; \
351: keylen = digestlen; \
352: } \
353: /* Compute TEMP from KEY and STRING. */ \
1.65 moko 354: char block[blocklen]; \
355: memset (block, IPAD, blocklen); \
1.64 moko 356: memxor (block, key, keylen); \
357: init(&c); \
1.65 moko 358: update(&c, (const unsigned char*)block, blocklen); \
1.64 moko 359: update(&c, (const unsigned char*)string, strlen(string)); \
360: final(tempdigest, &c); \
361: /* Compute result from KEY and TEMP. */ \
1.65 moko 362: memset (block, OPAD, blocklen); \
1.64 moko 363: memxor (block, key, keylen); \
364: init(&c); \
1.65 moko 365: update(&c, (const unsigned char*)block, blocklen); \
1.64 moko 366: update(&c, (const unsigned char*)tempdigest, digestlen); \
1.62 moko 367: }
1.55 misha 368:
1.62 moko 369: static void _digest(Request& r, MethodParams& params) {
1.63 moko 370: const String &smethod = params.as_string(0, PARAMETER_MUST_BE_STRING);
1.62 moko 371: const char *string = params.as_string(1, PARAMETER_MUST_BE_STRING).cstr();
372:
1.65 moko 373: enum Method { M_MD5, M_SHA1, M_SHA256, M_SHA512 } method;
1.62 moko 374:
1.63 moko 375: if (smethod == "md5") method = M_MD5;
376: else if (smethod == "sha1" ) method = M_SHA1;
1.65 moko 377: else if (smethod == "sha256" ) method = M_SHA256;
378: else if (smethod == "sha512" ) method = M_SHA512;
1.63 moko 379: else throw Exception(PARSER_RUNTIME, &smethod, "must be 'md5' or 'sha1'");
1.62 moko 380:
381: const char *hmac=0;
1.63 moko 382: enum Format { F_HEX, F_BASE64 } format = F_HEX;
1.62 moko 383:
384: if(params.count() == 3)
385: if(HashStringValue* options=params.as_hash(2)) {
386: int valid_options=0;
387: if(Value* value=options->get("hmac")) {
388: hmac=value->as_string().cstr();
389: valid_options++;
390: }
1.63 moko 391: if(Value* value=options->get("format")) {
392: const String& sformat=value->as_string();
393: if (sformat == "hex") format = F_HEX;
394: else if (sformat == "base64" ) format = F_BASE64;
395: else throw Exception(PARSER_RUNTIME, &sformat, "must be 'hex' or 'base64'");
1.62 moko 396: valid_options++;
397: }
398: if(valid_options!=options->count())
399: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
400: }
401:
402: String::C digest;
403:
1.63 moko 404: if(method == M_MD5){
1.64 moko 405: PA_MD5_CTX c;
406: if(hmac){
1.65 moko 407: HMAC(hmac, pa_MD5Init, pa_MD5Update, pa_MD5Final, 64, 16);
1.64 moko 408: } else {
409: pa_MD5Init(&c);
410: pa_MD5Update(&c, (const unsigned char*)string, strlen(string));
411: }
1.62 moko 412: char *str=(char *)pa_malloc(16);
1.64 moko 413: pa_MD5Final((unsigned char *)str, &c);
1.62 moko 414: digest = String::C(str, 16);
415: }
416:
1.63 moko 417: if(method == M_SHA1){
1.62 moko 418: SHA1Context c;
419: if(hmac){
1.65 moko 420: HMAC(hmac, SHA1Reset, SHA1Input, SHA1ReadDigest, 64, 20);
1.62 moko 421: } else {
1.64 moko 422: SHA1Reset(&c);
423: SHA1Input(&c, (const unsigned char*)string, strlen(string));
1.62 moko 424: }
425: char *str=(char *)pa_malloc(20);
1.64 moko 426: SHA1ReadDigest(str, &c);
1.62 moko 427: digest = String::C(str, 20);
428: }
1.49 misha 429:
1.65 moko 430: if(method == M_SHA256){
431: SHA256_CTX c;
432: if(hmac){
433: HMAC(hmac, pa_SHA256_Init, pa_SHA256_Update, pa_SHA256_Final, 64, SHA256_DIGEST_LENGTH);
434: } else {
435: pa_SHA256_Init(&c);
436: pa_SHA256_Update(&c, (const unsigned char*)string, strlen(string));
437: }
438: char *str=(char *)pa_malloc(SHA256_DIGEST_LENGTH);
439: pa_SHA256_Final((unsigned char *)str, &c);
440: digest = String::C(str, SHA256_DIGEST_LENGTH);
441: }
442:
443: if(method == M_SHA512){
444: SHA512_CTX c;
445: if(hmac){
446: HMAC(hmac, pa_SHA512_Init, pa_SHA512_Update, pa_SHA512_Final, 128, SHA512_DIGEST_LENGTH);
447: } else {
448: pa_SHA512_Init(&c);
449: pa_SHA512_Update(&c, (const unsigned char*)string, strlen(string));
450: }
451: char *str=(char *)pa_malloc(SHA512_DIGEST_LENGTH);
452: pa_SHA512_Final((unsigned char *)str, &c);
453: digest = String::C(str, SHA512_DIGEST_LENGTH);
454: }
455:
1.63 moko 456: if(format == F_HEX){
1.62 moko 457: r.write_pass_lang(*new String(hex_string((unsigned char *)digest.str, digest.length, false)));
458: }
1.63 moko 459: if(format == F_BASE64){
1.62 moko 460: r.write_pass_lang(*new String(pa_base64_encode(digest.str, digest.length)));
461: }
1.54 misha 462: }
1.49 misha 463:
1.55 misha 464: static void _uuid(Request& r, MethodParams& /*params*/) {
465: uuid uuid=get_uuid();
1.49 misha 466:
1.55 misha 467: const size_t bufsize=36+1/*zero-teminator*/+1/*for faulty snprintfs*/;
468: char* cstr=new(PointerFreeGC) char[bufsize];
1.28 paf 469:
1.55 misha 470: snprintf(cstr, bufsize,
471: "%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X",
472: uuid.time_low, uuid.time_mid, uuid.time_hi_and_version,
473: uuid.clock_seq >> 8, uuid.clock_seq & 0xFF,
474: uuid.node[0], uuid.node[1], uuid.node[2],
475: uuid.node[3], uuid.node[4], uuid.node[5]);
1.28 paf 476:
1.55 misha 477: r.write_pass_lang(*new String(cstr));
1.28 paf 478: }
479:
1.34 paf 480: static void _uid64(Request& r, MethodParams& /*params*/) {
1.30 paf 481:
482: unsigned char id[64/8];
483: random(&id, sizeof(id));
484:
1.34 paf 485: r.write_pass_lang(*new String(hex_string(id, sizeof(id), true)));
1.30 paf 486: }
487:
1.43 misha 488: static void _crc32(Request& r, MethodParams& params) {
1.51 misha 489: const char *string=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr();
1.43 misha 490: r.write_no_lang(*new VInt(pa_crc32(string, strlen(string))));
491: }
492:
1.61 moko 493: static void toBase(unsigned int value, unsigned int base, char*& ptr){
1.57 misha 494: static const char* hex="0123456789ABCDEF";
495: int rest = value % base;
1.58 misha 496: if(value >= base)
1.57 misha 497: toBase( (value-rest)/base, base, ptr);
498: *ptr++=(char)hex[rest];
499: }
500:
501: static void _convert(Request& r, MethodParams& params) {
1.60 moko 502: const char *str=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr();
503:
1.57 misha 504: int base_from=params.as_int(1, "base from must be integer", r);
505: if(base_from < 2 || base_from > 16)
506: throw Exception(PARSER_RUNTIME, 0, "base from must be an integer from 2 to 16");
507:
1.60 moko 508: int base_to=params.as_int(2, "base to must be integer", r);
509: if(base_to < 2 || base_to > 16)
510: throw Exception(PARSER_RUNTIME, 0, "base to must be an integer from 2 to 16");
511:
1.61 moko 512: while(isspace(*str))
1.60 moko 513: str++;
514:
515: if(!*str)
516: return;
517:
518: bool negative=false;
519: if(str[0]=='-') {
520: negative=true;
521: str++;
522: } else if(str[0]=='+') {
523: str++;
524: }
525:
1.61 moko 526: unsigned int value=pa_atoui(str, base_from);
1.57 misha 527:
1.61 moko 528: char result_cstr[sizeof(unsigned int)*8+1/*minus for negative number*/+1/*terminator*/];
1.60 moko 529: char* ptr=result_cstr;
530: if(negative)
531: *ptr++='-';
1.57 misha 532:
533: toBase(value, base_to, ptr);
534: *ptr=0;
535: r.write_pass_lang(*new String(pa_strdup(result_cstr)));
536: }
537:
1.1 parser 538: // constructor
539:
1.34 paf 540: MMath::MMath(): Methoded("math") {
1.1 parser 541: // ^FUNC(expr)
1.28 paf 542: #define ADDX(name, X) \
543: add_native_method(#name, Method::CT_STATIC, _##name, X, X)
544: #define ADD0(name) ADDX(name, 0)
545: #define ADD1(name) ADDX(name, 1)
546: #define ADD2(name) ADDX(name, 2)
1.1 parser 547:
548: ADD1(round); ADD1(floor); ADD1(ceiling);
1.3 parser 549: ADD1(trunc); ADD1(frac);
1.1 parser 550: ADD1(abs); ADD1(sign);
1.46 misha 551: ADD1(exp);
1.48 misha 552: ADD1(log); ADD1(log10);
1.1 parser 553: ADD1(sin); ADD1(asin);
554: ADD1(cos); ADD1(acos);
555: ADD1(tan); ADD1(atan);
1.3 parser 556: ADD1(degrees); ADD1(radians);
1.1 parser 557: ADD1(sqrt);
1.3 parser 558: ADD1(random);
1.1 parser 559:
1.49 misha 560: // ^math:pow(x;y)
1.1 parser 561: ADD2(pow);
562:
1.49 misha 563: // ^math:crypt[password;salt]
1.19 paf 564: ADD2(crypt);
1.26 paf 565:
1.49 misha 566: // ^math:md5[string]
1.26 paf 567: ADD1(md5);
1.5 parser 568:
1.49 misha 569: // ^math:sha1[string]
570: ADD1(sha1);
571:
1.63 moko 572: // ^math:digest[method;string;options]
1.62 moko 573: add_native_method("digest", Method::CT_STATIC, _digest, 2, 3);
574:
1.49 misha 575: // ^math:crc32[string]
1.43 misha 576: ADD1(crc32);
577:
1.49 misha 578: // ^math:uuid[]
1.29 paf 579: ADD0(uuid);
580:
1.49 misha 581: // ^math:uid64[]
1.30 paf 582: ADD0(uid64);
1.57 misha 583:
584: // ^math:convert[number](base-from;base-to)
585: add_native_method("convert", Method::CT_STATIC, _convert, 3, 3);
1.1 parser 586: }
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