Annotation of parser3/src/classes/math.C, revision 1.86
1.1 parser 1: /** @file
2: Parser: @b math parser class.
3:
1.85 moko 4: Copyright (c) 2001-2017 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"
1.69 moko 15: #include "pa_vfile.h"
1.1 parser 16: #include "pa_request.h"
1.19 paf 17: #include "pa_md5.h"
1.65 moko 18: #include "pa_sha2.h"
1.55 misha 19: #include "pa_random.h"
1.1 parser 20:
1.34 paf 21: #ifdef HAVE_CRYPT
1.76 moko 22: extern "C" char *crypt(const char* , const char* );
1.20 paf 23: #endif
24:
1.86 ! moko 25: volatile const char * IDENT_MATH_C="$Id: math.C,v 1.85 2017/02/07 22:00:28 moko Exp $";
1.59 moko 26:
1.1 parser 27: // defines
28:
1.20 paf 29: #define MAX_SALT 8
1.1 parser 30:
31: // class
32:
1.34 paf 33: class MMath: public Methoded {
1.81 moko 34: public: // Methoded
35: bool used_directly() { return false; }
36:
1.1 parser 37: public:
1.34 paf 38: MMath();
1.1 parser 39: };
40:
1.34 paf 41: // global variables
42:
1.81 moko 43: DECLARE_CLASS_VAR(math, new MMath);
1.34 paf 44:
1.1 parser 45: // methods
1.34 paf 46:
47: static void _random(Request& r, MethodParams& params) {
1.41 paf 48: double top=params.as_double(0, "range must be expression", r);
1.84 moko 49: if(top<1 || top>INT32_MAX)
50: throw Exception(PARSER_RUNTIME, 0, "top(%.15g) must be [1..%u]", top, INT32_MAX);
1.83 moko 51: r.write(*new VInt(_random(uint(top))));
1.1 parser 52: }
53:
54:
1.20 paf 55: typedef double(*math1_func_ptr)(double);
1.3 parser 56: static double frac(double param) { return param-trunc(param); }
57: static double degrees(double param) { return param /PI *180; }
58: static double radians(double param) { return param /180 *PI; }
1.1 parser 59:
1.34 paf 60: static void math1(Request& r, MethodParams& params, math1_func_ptr func) {
1.41 paf 61: double param=params.as_double(0, "parameter must be expression", r);
62: double result=func(param);
1.83 moko 63: r.write(*new VDouble(result));
1.1 parser 64: }
65:
66: #define MATH1(name) \
1.34 paf 67: static void _##name(Request& r, MethodParams& params) {\
68: math1(r, params, &name);\
1.1 parser 69: }
1.74 moko 70:
1.1 parser 71: #define MATH1P(name_parser, name_c) \
1.34 paf 72: static void _##name_parser(Request& r, MethodParams& params) {\
73: math1(r, params, &name_c);\
1.1 parser 74: }
1.74 moko 75:
76: MATH1(round)
77: MATH1(floor)
78: MATH1P(ceiling, ceil)
79: MATH1(trunc)
80: MATH1(frac)
81: MATH1P(abs, fabs)
82: MATH1(sign)
83: MATH1(exp)
84: MATH1(log)
85: MATH1(log10)
86: MATH1(sin)
87: MATH1(asin)
88: MATH1(cos)
89: MATH1(acos)
90: MATH1(tan)
91: MATH1(atan)
92: MATH1(degrees)
93: MATH1(radians)
94: MATH1(sqrt)
1.1 parser 95:
96:
97: typedef double (*math2_func_ptr)(double, double);
1.34 paf 98: static void math2(Request& r, MethodParams& params, math2_func_ptr func) {
1.41 paf 99: double a=params.as_double(0, "parameter must be expression", r);
100: double b=params.as_double(1, "parameter must be expression", r);
101: double result=func(a, b);
1.83 moko 102: r.write(*new VDouble(result));
1.1 parser 103: }
104:
105: #define MATH2(name) \
1.34 paf 106: static void _##name(Request& r, MethodParams& params) {\
107: math2(r, params, &name);\
1.1 parser 108: }
1.74 moko 109:
110: MATH2(pow)
1.1 parser 111:
1.77 moko 112: inline bool is_salt_body_char(unsigned char c) {
1.73 moko 113: return pa_isalnum(c) || c == '.' || c=='/';
1.20 paf 114: }
1.77 moko 115:
1.34 paf 116: static size_t calc_prefix_size(const char* salt) {
1.37 paf 117: if(strlen(salt)) {
1.39 paf 118: if(!is_salt_body_char((unsigned char)salt[0])) { // $... {...
1.34 paf 119: const char* cur=salt+1; // skip
1.39 paf 120: while(is_salt_body_char((unsigned char)*cur++)) // ...$ ...}
1.20 paf 121: ;
122: return cur-salt;
123: } else
124: return 0;
125: } else
126: return 0;
127: }
1.34 paf 128: static void _crypt(Request& r, MethodParams& params) {
129: const char* password=params.as_string(0, "password must be string").cstr();
130: const char* maybe_bodyless_salt=params.as_string(1, "salt must be string").cstr();
1.20 paf 131:
132: size_t prefix_size=calc_prefix_size(maybe_bodyless_salt);
1.34 paf 133: const char* normal_salt;
1.20 paf 134: char normalize_buf[MAX_STRING];
135: if(prefix_size==strlen(maybe_bodyless_salt)) { // bodyless?
136: strncpy(normalize_buf, maybe_bodyless_salt, MAX_STRING-MAX_SALT-1);
137: char *cur=normalize_buf+strlen(normalize_buf);
138: // sould add up MAX_SALT random chars
139: static unsigned char itoa64[] = /* 0 ... 63 => ASCII - 64 */
140: "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
141: for(int i=0; i<MAX_SALT; i++)
142: *cur++=itoa64[_random(64)];
143: *cur=0;
144: normal_salt=normalize_buf;
145: } else
146: normal_salt=maybe_bodyless_salt;
1.19 paf 147:
1.54 misha 148: /* FreeBSD style MD5 string
149: */
150: if(strncmp(normal_salt, PA_MD5PW_ID, PA_MD5PW_IDLEN) == 0) {
1.19 paf 151: const size_t sample_size=120;
1.34 paf 152: char *sample_buf=new(PointerFreeGC) char[sample_size];
153: pa_MD5Encode((const unsigned char *)password,
154: (const unsigned char *)normal_salt, sample_buf, sample_size);
155: String sample(sample_buf);
1.83 moko 156: r.write(sample);
1.54 misha 157: } else {
1.20 paf 158: #ifdef HAVE_CRYPT
1.34 paf 159: const char* static_sample_buf=crypt(password, normal_salt);
160: if(!static_sample_buf // nothing generated
161: || !static_sample_buf[0] // generated nothing
162: || strncmp(static_sample_buf, normal_salt, prefix_size)!=0) // salt prefix not preserved
1.45 misha 163: throw Exception(PARSER_RUNTIME,
1.34 paf 164: 0,
165: "crypt on this platform does not support '%.*s' salt prefix", prefix_size, normal_salt);
1.20 paf 166:
1.83 moko 167: r.write(String(pa_strdup(static_sample_buf)));
1.20 paf 168: #else
1.45 misha 169: throw Exception(PARSER_RUNTIME,
1.34 paf 170: 0,
1.19 paf 171: "salt must start with '" PA_MD5PW_ID "'");
1.20 paf 172: #endif
173: }
1.19 paf 174: }
175:
1.34 paf 176: static void _md5(Request& r, MethodParams& params) {
1.72 moko 177: const char *string=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr_to_string_body_untaint(String::L_AS_IS, r.connection(false), &r.charsets).cstr();
1.27 paf 178:
179: PA_MD5_CTX context;
180: unsigned char digest[16];
1.34 paf 181: pa_MD5Init(&context);
182: pa_MD5Update(&context, (const unsigned char*)string, strlen(string));
183: pa_MD5Final(digest, &context);
1.27 paf 184:
1.83 moko 185: r.write(*new String(hex_string(digest, sizeof(digest), false)));
1.26 paf 186: }
187:
1.49 misha 188:
189: //SHA-1:
190:
1.50 misha 191: struct SHA1Context {
1.54 misha 192: unsigned Message_Digest[5], Length_Low, Length_High;
193: unsigned int Message_Block[64];
194: int Message_Block_Index, Computed, Corrupted;
1.50 misha 195: };
1.49 misha 196:
197: #define SHA1CircularShift(bits,word) ((((word) << (bits)) & 0xFFFFFFFF)|((word) >> (32-(bits))))
198: void SHA1ProcessMessageBlock(SHA1Context *);
199: void SHA1PadMessage(SHA1Context *);
1.50 misha 200: void SHA1Reset(SHA1Context *context) {
1.54 misha 201: context->Length_Low = context->Length_High = context->Message_Block_Index = 0;
202: context->Message_Digest[0] = 0x67452301;
203: context->Message_Digest[1] = 0xEFCDAB89;
204: context->Message_Digest[2] = 0x98BADCFE;
205: context->Message_Digest[3] = 0x10325476;
206: context->Message_Digest[4] = 0xC3D2E1F0;
207: context->Computed = context->Corrupted = 0;
1.50 misha 208: }
1.49 misha 209:
1.50 misha 210: int SHA1Result(SHA1Context *context) {
1.54 misha 211: if (context->Corrupted)
212: return 0;
213: if (!context->Computed) {
214: SHA1PadMessage(context);
215: context->Computed = 1;
216: }
217: return 1;
218: }
219:
220: void SHA1Input(SHA1Context *context, const unsigned char *message_array, unsigned length) {
221: if (!length)
222: return;
223: if (context->Computed || context->Corrupted) {
224: context->Corrupted = 1;
225: return;
226: }
227:
228: while(length-- && !context->Corrupted) {
229: context->Message_Block[context->Message_Block_Index++] = (*message_array & 0xFF);
230: context->Length_Low += 8;
231: context->Length_Low &= 0xFFFFFFFF;
232: if (!context->Length_Low && !(context->Length_High=((1+context->Length_High)&0xFFFFFFFF)))
233: context->Corrupted = 1; // too long message
234: if (context->Message_Block_Index == 64)
235: SHA1ProcessMessageBlock(context);
236: message_array++;
1.49 misha 237: }
1.50 misha 238: }
1.49 misha 239:
1.50 misha 240: void SHA1ProcessMessageBlock(SHA1Context *context) {
1.54 misha 241: const unsigned K[] = {0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xCA62C1D6 };
242: int t;
243: unsigned temp, W[80], buf[5];
244: unsigned &A=buf[0], &B=buf[1], &C=buf[2], &D=buf[3], &E=buf[4];
1.50 misha 245:
1.54 misha 246: for(t = 0; t < 16; t++)
247: 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 248:
1.54 misha 249: for(t = 16; t < 80; t++)
250: W[t] = SHA1CircularShift(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]);
1.49 misha 251:
1.54 misha 252: memcpy (buf, context->Message_Digest, sizeof(buf));
253: for(t = 0; t < 20; t++) {
254: temp = (SHA1CircularShift(5,A) + ((B & C) | ((~B) & D)) + E + W[t] + K[0]) & 0xFFFFFFFF;
255: E = D; D = C;
256: C = SHA1CircularShift(30,B);
257: B = A; A = temp;
1.49 misha 258: }
259:
1.54 misha 260: for(t = 20; t < 40; t++) {
261: temp = (SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[1]) & 0xFFFFFFFF;
262: E = D; D = C;
263: C = SHA1CircularShift(30,B);
264: B = A; A = temp;
1.49 misha 265: }
266:
1.54 misha 267: for(t = 40; t < 60; t++) {
268: temp = (SHA1CircularShift(5,A) + ((B & C) | (B & D) | (C & D)) + E + W[t] + K[2]) & 0xFFFFFFFF;
269: E = D; D = C;
270: C = SHA1CircularShift(30,B);
271: B = A; A = temp;
1.49 misha 272: }
273:
1.54 misha 274: for(t = 60; t < 80; t++) {
275: temp = (SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[3]) & 0xFFFFFFFF;
276: E = D; D = C;
277: C = SHA1CircularShift(30,B);
278: B = A; A = temp;
1.49 misha 279: }
280:
1.54 misha 281: for (t = 0; t < 5; t++)
282: context->Message_Digest[t] = (context->Message_Digest[t] + buf[t]) & 0xFFFFFFFF;
1.50 misha 283:
1.54 misha 284: context->Message_Block_Index = 0;
1.50 misha 285: }
1.49 misha 286:
1.50 misha 287: void SHA1PadMessage(SHA1Context *context) {
1.54 misha 288: context->Message_Block[context->Message_Block_Index++] = 0x80;
1.50 misha 289: if (context->Message_Block_Index > 56) {
290: //was 55, one shift
1.54 misha 291: while(context->Message_Block_Index < 64)
292: context->Message_Block[context->Message_Block_Index++] = 0;
293: SHA1ProcessMessageBlock(context);
294: while(context->Message_Block_Index < 56)
295: context->Message_Block[context->Message_Block_Index++] = 0;
1.50 misha 296: } else
1.54 misha 297: while(context->Message_Block_Index < 56)
298: context->Message_Block[context->Message_Block_Index++] = 0;
299: context->Message_Block[56] = (context->Length_High >> 24) & 0xFF;
300: context->Message_Block[57] = (context->Length_High >> 16) & 0xFF;
301: context->Message_Block[58] = (context->Length_High >> 8) & 0xFF;
302: context->Message_Block[59] = (context->Length_High) & 0xFF;
303: context->Message_Block[60] = (context->Length_Low >> 24) & 0xFF;
304: context->Message_Block[61] = (context->Length_Low >> 16) & 0xFF;
305: context->Message_Block[62] = (context->Length_Low >> 8) & 0xFF;
306: context->Message_Block[63] = (context->Length_Low) & 0xFF;
307: SHA1ProcessMessageBlock(context);
1.50 misha 308: }
1.49 misha 309:
1.62 moko 310: #ifdef PA_BIG_ENDIAN
311: #define SWAP(n) (n)
312: #else
313: #define SWAP(n) (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))
314: #endif
315:
1.64 moko 316: void SHA1ReadDigest(void *buf, SHA1Context *c)
1.62 moko 317: {
1.64 moko 318: if(!SHA1Result(c))
1.62 moko 319: throw Exception (PARSER_RUNTIME, 0, "Can not compute SHA1");
320:
1.64 moko 321: ((uint32_t *)buf)[0] = SWAP(c->Message_Digest[0]);
322: ((uint32_t *)buf)[1] = SWAP(c->Message_Digest[1]);
323: ((uint32_t *)buf)[2] = SWAP(c->Message_Digest[2]);
324: ((uint32_t *)buf)[3] = SWAP(c->Message_Digest[3]);
325: ((uint32_t *)buf)[4] = SWAP(c->Message_Digest[4]);
1.62 moko 326: }
327:
1.54 misha 328: static void _sha1(Request& r, MethodParams& params) {
1.72 moko 329: const char *string = params.as_string(0, PARAMETER_MUST_BE_STRING).cstr_to_string_body_untaint(String::L_AS_IS, r.connection(false), &r.charsets).cstr();
1.49 misha 330:
1.54 misha 331: SHA1Context c;
1.64 moko 332: unsigned char digest[20];
1.54 misha 333: SHA1Reset (&c);
334: SHA1Input (&c, (const unsigned char*)string, strlen(string));
1.64 moko 335: SHA1ReadDigest(digest, &c);
1.54 misha 336:
1.83 moko 337: r.write(*new String(hex_string(digest, sizeof(digest), false)));
1.62 moko 338: }
339:
1.64 moko 340: void memxor(char *dest, const char *src, size_t n){
341: for (;n>0;n--) *dest++ ^= *src++;
342: }
343:
1.62 moko 344: #define IPAD 0x36
345: #define OPAD 0x5c
346:
1.65 moko 347: #define HMAC(key,init,update,final,blocklen,digestlen){ \
1.64 moko 348: unsigned char tempdigest[digestlen], keydigest[digestlen]; \
349: size_t keylen=strlen(key); \
1.65 moko 350: /* Reduce the key's size, so that it becomes <= blocklen bytes. */ \
351: if (keylen > blocklen){ \
1.64 moko 352: init(&c); \
353: update(&c,(const unsigned char*)hmac, keylen); \
354: final(keydigest, &c); \
355: key = (char *)keydigest; \
356: keylen = digestlen; \
357: } \
358: /* Compute TEMP from KEY and STRING. */ \
1.65 moko 359: char block[blocklen]; \
360: memset (block, IPAD, blocklen); \
1.64 moko 361: memxor (block, key, keylen); \
362: init(&c); \
1.65 moko 363: update(&c, (const unsigned char*)block, blocklen); \
1.69 moko 364: update(&c, (const unsigned char*)data.str, data.length); \
1.64 moko 365: final(tempdigest, &c); \
366: /* Compute result from KEY and TEMP. */ \
1.65 moko 367: memset (block, OPAD, blocklen); \
1.64 moko 368: memxor (block, key, keylen); \
369: init(&c); \
1.65 moko 370: update(&c, (const unsigned char*)block, blocklen); \
1.64 moko 371: update(&c, (const unsigned char*)tempdigest, digestlen); \
1.62 moko 372: }
1.55 misha 373:
1.62 moko 374: static void _digest(Request& r, MethodParams& params) {
1.63 moko 375: const String &smethod = params.as_string(0, PARAMETER_MUST_BE_STRING);
1.69 moko 376:
377: Value& vdata=params.as_no_junction(1, "parameter must be string or file");
378:
379: String::C data;
380: if(const String* sdata=vdata.get_string()){
1.72 moko 381: String::Body body=sdata->cstr_to_string_body_untaint(String::L_AS_IS, r.connection(false), &r.charsets); // explode content, honor tainting changes
1.69 moko 382: data=String::C(body.cstr(), body.length());
383: } else {
384: VFile *file=vdata.as_vfile(String::L_AS_IS);
385: data=String::C(file->value_ptr(),file->value_size());
386: }
1.62 moko 387:
1.65 moko 388: enum Method { M_MD5, M_SHA1, M_SHA256, M_SHA512 } method;
1.62 moko 389:
1.63 moko 390: if (smethod == "md5") method = M_MD5;
391: else if (smethod == "sha1" ) method = M_SHA1;
1.65 moko 392: else if (smethod == "sha256" ) method = M_SHA256;
393: else if (smethod == "sha512" ) method = M_SHA512;
1.86 ! moko 394: else throw Exception(PARSER_RUNTIME, &smethod, "must be 'md5' or 'sha1' or 'sha256' or 'sha512'");
1.62 moko 395:
396: const char *hmac=0;
1.63 moko 397: enum Format { F_HEX, F_BASE64 } format = F_HEX;
1.62 moko 398:
399: if(params.count() == 3)
400: if(HashStringValue* options=params.as_hash(2)) {
401: int valid_options=0;
402: if(Value* value=options->get("hmac")) {
403: hmac=value->as_string().cstr();
404: valid_options++;
405: }
1.63 moko 406: if(Value* value=options->get("format")) {
407: const String& sformat=value->as_string();
408: if (sformat == "hex") format = F_HEX;
409: else if (sformat == "base64" ) format = F_BASE64;
410: else throw Exception(PARSER_RUNTIME, &sformat, "must be 'hex' or 'base64'");
1.62 moko 411: valid_options++;
412: }
413: if(valid_options!=options->count())
414: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
415: }
416:
417: String::C digest;
418:
1.63 moko 419: if(method == M_MD5){
1.64 moko 420: PA_MD5_CTX c;
421: if(hmac){
1.65 moko 422: HMAC(hmac, pa_MD5Init, pa_MD5Update, pa_MD5Final, 64, 16);
1.64 moko 423: } else {
424: pa_MD5Init(&c);
1.69 moko 425: pa_MD5Update(&c, (const unsigned char*)data.str, data.length);
1.64 moko 426: }
1.62 moko 427: char *str=(char *)pa_malloc(16);
1.64 moko 428: pa_MD5Final((unsigned char *)str, &c);
1.62 moko 429: digest = String::C(str, 16);
430: }
431:
1.63 moko 432: if(method == M_SHA1){
1.62 moko 433: SHA1Context c;
434: if(hmac){
1.65 moko 435: HMAC(hmac, SHA1Reset, SHA1Input, SHA1ReadDigest, 64, 20);
1.62 moko 436: } else {
1.64 moko 437: SHA1Reset(&c);
1.69 moko 438: SHA1Input(&c, (const unsigned char*)data.str, data.length);
1.62 moko 439: }
440: char *str=(char *)pa_malloc(20);
1.64 moko 441: SHA1ReadDigest(str, &c);
1.62 moko 442: digest = String::C(str, 20);
443: }
1.49 misha 444:
1.65 moko 445: if(method == M_SHA256){
446: SHA256_CTX c;
447: if(hmac){
448: HMAC(hmac, pa_SHA256_Init, pa_SHA256_Update, pa_SHA256_Final, 64, SHA256_DIGEST_LENGTH);
449: } else {
450: pa_SHA256_Init(&c);
1.69 moko 451: pa_SHA256_Update(&c, (const unsigned char*)data.str, data.length);
1.65 moko 452: }
453: char *str=(char *)pa_malloc(SHA256_DIGEST_LENGTH);
454: pa_SHA256_Final((unsigned char *)str, &c);
455: digest = String::C(str, SHA256_DIGEST_LENGTH);
456: }
457:
458: if(method == M_SHA512){
459: SHA512_CTX c;
460: if(hmac){
461: HMAC(hmac, pa_SHA512_Init, pa_SHA512_Update, pa_SHA512_Final, 128, SHA512_DIGEST_LENGTH);
462: } else {
463: pa_SHA512_Init(&c);
1.69 moko 464: pa_SHA512_Update(&c, (const unsigned char*)data.str, data.length);
1.65 moko 465: }
466: char *str=(char *)pa_malloc(SHA512_DIGEST_LENGTH);
467: pa_SHA512_Final((unsigned char *)str, &c);
468: digest = String::C(str, SHA512_DIGEST_LENGTH);
469: }
470:
1.63 moko 471: if(format == F_HEX){
1.83 moko 472: r.write(*new String(hex_string((unsigned char *)digest.str, digest.length, false)));
1.62 moko 473: }
1.63 moko 474: if(format == F_BASE64){
1.83 moko 475: r.write(*new String(pa_base64_encode(digest.str, digest.length)));
1.62 moko 476: }
1.54 misha 477: }
1.49 misha 478:
1.55 misha 479: static void _uuid(Request& r, MethodParams& /*params*/) {
1.83 moko 480: r.write(*new String(get_uuid_cstr()));
1.28 paf 481: }
482:
1.34 paf 483: static void _uid64(Request& r, MethodParams& /*params*/) {
1.30 paf 484: unsigned char id[64/8];
485: random(&id, sizeof(id));
486:
1.83 moko 487: r.write(*new String(hex_string(id, sizeof(id), true)));
1.30 paf 488: }
489:
1.43 misha 490: static void _crc32(Request& r, MethodParams& params) {
1.51 misha 491: const char *string=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr();
1.83 moko 492: r.write(*new VInt(pa_crc32(string, strlen(string))));
1.43 misha 493: }
494:
1.78 moko 495: static void toBase(unsigned long long int value, unsigned int base, char*& ptr){
1.57 misha 496: static const char* hex="0123456789ABCDEF";
1.79 moko 497: unsigned int rest = (unsigned int)(value % base);
1.58 misha 498: if(value >= base)
1.57 misha 499: toBase( (value-rest)/base, base, ptr);
500: *ptr++=(char)hex[rest];
501: }
502:
503: static void _convert(Request& r, MethodParams& params) {
1.60 moko 504: const char *str=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr();
505:
1.57 misha 506: int base_from=params.as_int(1, "base from must be integer", r);
507: if(base_from < 2 || base_from > 16)
508: throw Exception(PARSER_RUNTIME, 0, "base from must be an integer from 2 to 16");
509:
1.60 moko 510: int base_to=params.as_int(2, "base to must be integer", r);
511: if(base_to < 2 || base_to > 16)
512: throw Exception(PARSER_RUNTIME, 0, "base to must be an integer from 2 to 16");
513:
1.61 moko 514: while(isspace(*str))
1.60 moko 515: str++;
516:
517: if(!*str)
518: return;
519:
520: bool negative=false;
521: if(str[0]=='-') {
522: negative=true;
523: str++;
524: } else if(str[0]=='+') {
525: str++;
526: }
527:
1.78 moko 528: unsigned long long int value=pa_atoul(str, base_from);
1.57 misha 529:
1.78 moko 530: char result_cstr[sizeof(unsigned long long int)*8+1/*minus for negative number*/+1/*terminator*/];
1.60 moko 531: char* ptr=result_cstr;
532: if(negative)
533: *ptr++='-';
1.57 misha 534:
535: toBase(value, base_to, ptr);
536: *ptr=0;
1.83 moko 537: r.write(*new String(pa_strdup(result_cstr)));
1.57 misha 538: }
539:
1.1 parser 540: // constructor
541:
1.34 paf 542: MMath::MMath(): Methoded("math") {
1.1 parser 543: // ^FUNC(expr)
1.28 paf 544: #define ADDX(name, X) \
545: add_native_method(#name, Method::CT_STATIC, _##name, X, X)
546: #define ADD0(name) ADDX(name, 0)
547: #define ADD1(name) ADDX(name, 1)
548: #define ADD2(name) ADDX(name, 2)
1.1 parser 549:
550: ADD1(round); ADD1(floor); ADD1(ceiling);
1.3 parser 551: ADD1(trunc); ADD1(frac);
1.1 parser 552: ADD1(abs); ADD1(sign);
1.46 misha 553: ADD1(exp);
1.48 misha 554: ADD1(log); ADD1(log10);
1.1 parser 555: ADD1(sin); ADD1(asin);
556: ADD1(cos); ADD1(acos);
557: ADD1(tan); ADD1(atan);
1.3 parser 558: ADD1(degrees); ADD1(radians);
1.1 parser 559: ADD1(sqrt);
1.3 parser 560: ADD1(random);
1.1 parser 561:
1.49 misha 562: // ^math:pow(x;y)
1.1 parser 563: ADD2(pow);
564:
1.49 misha 565: // ^math:crypt[password;salt]
1.19 paf 566: ADD2(crypt);
1.26 paf 567:
1.49 misha 568: // ^math:md5[string]
1.26 paf 569: ADD1(md5);
1.5 parser 570:
1.49 misha 571: // ^math:sha1[string]
572: ADD1(sha1);
573:
1.71 moko 574: // ^math:digest[method;string|file;options]
1.62 moko 575: add_native_method("digest", Method::CT_STATIC, _digest, 2, 3);
576:
1.49 misha 577: // ^math:crc32[string]
1.43 misha 578: ADD1(crc32);
579:
1.49 misha 580: // ^math:uuid[]
1.29 paf 581: ADD0(uuid);
582:
1.49 misha 583: // ^math:uid64[]
1.30 paf 584: ADD0(uid64);
1.57 misha 585:
586: // ^math:convert[number](base-from;base-to)
587: add_native_method("convert", Method::CT_STATIC, _convert, 3, 3);
1.1 parser 588: }
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