Annotation of parser3/src/classes/math.C, revision 1.70
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"
1.69 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
1.67 moko 22: extern "C" char *crypt(const char* , const char* );
1.20 paf 23: #endif
24:
1.70 ! moko 25: volatile const char * IDENT_MATH_C="$Id: math.C,v 1.69 2013/08/21 14:41:24 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 {
1.1 parser 34: public:
1.34 paf 35: MMath();
1.5 parser 36:
1.1 parser 37: public: // Methoded
1.15 paf 38: bool used_directly() { return false; }
1.1 parser 39: };
40:
1.34 paf 41: // global variables
42:
43: DECLARE_CLASS_VAR(math, 0 /*fictive*/, new MMath);
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);
1.34 paf 49: if(top<=0 || top>MAX_UINT)
1.45 misha 50: throw Exception(PARSER_RUNTIME,
1.34 paf 51: 0,
52: "top(%g) must be [1..%u]", top, MAX_UINT);
1.1 parser 53:
1.34 paf 54: r.write_no_lang(*new VInt(_random(uint(top))));
1.1 parser 55: }
56:
57:
1.20 paf 58: typedef double(*math1_func_ptr)(double);
1.3 parser 59: static double frac(double param) { return param-trunc(param); }
60: static double degrees(double param) { return param /PI *180; }
61: static double radians(double param) { return param /180 *PI; }
1.1 parser 62:
1.34 paf 63: static void math1(Request& r, MethodParams& params, math1_func_ptr func) {
1.41 paf 64: double param=params.as_double(0, "parameter must be expression", r);
65: double result=func(param);
1.34 paf 66: r.write_no_lang(*new VDouble(result));
1.1 parser 67: }
68:
69: #define MATH1(name) \
1.34 paf 70: static void _##name(Request& r, MethodParams& params) {\
71: math1(r, params, &name);\
1.1 parser 72: }
73: #define MATH1P(name_parser, name_c) \
1.34 paf 74: static void _##name_parser(Request& r, MethodParams& params) {\
75: math1(r, params, &name_c);\
1.1 parser 76: }
77: MATH1(round); MATH1(floor); MATH1P(ceiling, ceil);
1.3 parser 78: MATH1(trunc); MATH1(frac);
1.1 parser 79: MATH1P(abs, fabs); MATH1(sign);
1.46 misha 80: MATH1(exp);
1.48 misha 81: MATH1(log); MATH1(log10);
1.1 parser 82: MATH1(sin); MATH1(asin);
83: MATH1(cos); MATH1(acos);
84: MATH1(tan); MATH1(atan);
1.3 parser 85: MATH1(degrees); MATH1(radians);
1.1 parser 86: MATH1(sqrt);
87:
88:
89: typedef double (*math2_func_ptr)(double, double);
1.34 paf 90: static void math2(Request& r, MethodParams& params, math2_func_ptr func) {
1.41 paf 91: double a=params.as_double(0, "parameter must be expression", r);
92: double b=params.as_double(1, "parameter must be expression", r);
93: double result=func(a, b);
1.34 paf 94: r.write_no_lang(*new VDouble(result));
1.1 parser 95: }
96:
97: #define MATH2(name) \
1.34 paf 98: static void _##name(Request& r, MethodParams& params) {\
99: math2(r, params, &name);\
1.1 parser 100: }
101: MATH2(pow);
102:
1.20 paf 103: inline bool is_salt_body_char(int c) {
104: return isalnum(c) || c == '.' || c=='/';
105: }
1.34 paf 106: static size_t calc_prefix_size(const char* salt) {
1.37 paf 107: if(strlen(salt)) {
1.39 paf 108: if(!is_salt_body_char((unsigned char)salt[0])) { // $... {...
1.34 paf 109: const char* cur=salt+1; // skip
1.39 paf 110: while(is_salt_body_char((unsigned char)*cur++)) // ...$ ...}
1.20 paf 111: ;
112: return cur-salt;
113: } else
114: return 0;
115: } else
116: return 0;
117: }
1.34 paf 118: static void _crypt(Request& r, MethodParams& params) {
119: const char* password=params.as_string(0, "password must be string").cstr();
120: const char* maybe_bodyless_salt=params.as_string(1, "salt must be string").cstr();
1.20 paf 121:
122: size_t prefix_size=calc_prefix_size(maybe_bodyless_salt);
1.34 paf 123: const char* normal_salt;
1.20 paf 124: char normalize_buf[MAX_STRING];
125: if(prefix_size==strlen(maybe_bodyless_salt)) { // bodyless?
126: strncpy(normalize_buf, maybe_bodyless_salt, MAX_STRING-MAX_SALT-1);
127: char *cur=normalize_buf+strlen(normalize_buf);
128: // sould add up MAX_SALT random chars
129: static unsigned char itoa64[] = /* 0 ... 63 => ASCII - 64 */
130: "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
131: for(int i=0; i<MAX_SALT; i++)
132: *cur++=itoa64[_random(64)];
133: *cur=0;
134: normal_salt=normalize_buf;
135: } else
136: normal_salt=maybe_bodyless_salt;
1.19 paf 137:
1.54 misha 138: /* FreeBSD style MD5 string
139: */
140: if(strncmp(normal_salt, PA_MD5PW_ID, PA_MD5PW_IDLEN) == 0) {
1.19 paf 141: const size_t sample_size=120;
1.34 paf 142: char *sample_buf=new(PointerFreeGC) char[sample_size];
143: pa_MD5Encode((const unsigned char *)password,
144: (const unsigned char *)normal_salt, sample_buf, sample_size);
145: String sample(sample_buf);
146: r.write_pass_lang(sample);
1.54 misha 147: } else {
1.20 paf 148: #ifdef HAVE_CRYPT
1.34 paf 149: const char* static_sample_buf=crypt(password, normal_salt);
150: if(!static_sample_buf // nothing generated
151: || !static_sample_buf[0] // generated nothing
152: || strncmp(static_sample_buf, normal_salt, prefix_size)!=0) // salt prefix not preserved
1.45 misha 153: throw Exception(PARSER_RUNTIME,
1.34 paf 154: 0,
155: "crypt on this platform does not support '%.*s' salt prefix", prefix_size, normal_salt);
1.20 paf 156:
1.34 paf 157: r.write_pass_lang(String(pa_strdup(static_sample_buf)));
1.20 paf 158: #else
1.45 misha 159: throw Exception(PARSER_RUNTIME,
1.34 paf 160: 0,
1.19 paf 161: "salt must start with '" PA_MD5PW_ID "'");
1.20 paf 162: #endif
163: }
1.19 paf 164: }
165:
1.34 paf 166: static void _md5(Request& r, MethodParams& params) {
1.70 ! moko 167: const char *string=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr_to_string_body_untaint(String::L_AS_IS).cstr();
1.27 paf 168:
169: PA_MD5_CTX context;
170: unsigned char digest[16];
1.34 paf 171: pa_MD5Init(&context);
172: pa_MD5Update(&context, (const unsigned char*)string, strlen(string));
173: pa_MD5Final(digest, &context);
1.27 paf 174:
1.34 paf 175: r.write_pass_lang(*new String(hex_string(digest, sizeof(digest), false)));
1.26 paf 176: }
177:
1.49 misha 178:
179: //SHA-1:
180:
1.50 misha 181: struct SHA1Context {
1.54 misha 182: unsigned Message_Digest[5], Length_Low, Length_High;
183: unsigned int Message_Block[64];
184: int Message_Block_Index, Computed, Corrupted;
1.50 misha 185: };
1.49 misha 186:
187: #define SHA1CircularShift(bits,word) ((((word) << (bits)) & 0xFFFFFFFF)|((word) >> (32-(bits))))
188: void SHA1ProcessMessageBlock(SHA1Context *);
189: void SHA1PadMessage(SHA1Context *);
1.50 misha 190: void SHA1Reset(SHA1Context *context) {
1.54 misha 191: context->Length_Low = context->Length_High = context->Message_Block_Index = 0;
192: context->Message_Digest[0] = 0x67452301;
193: context->Message_Digest[1] = 0xEFCDAB89;
194: context->Message_Digest[2] = 0x98BADCFE;
195: context->Message_Digest[3] = 0x10325476;
196: context->Message_Digest[4] = 0xC3D2E1F0;
197: context->Computed = context->Corrupted = 0;
1.50 misha 198: }
1.49 misha 199:
1.50 misha 200: int SHA1Result(SHA1Context *context) {
1.54 misha 201: if (context->Corrupted)
202: return 0;
203: if (!context->Computed) {
204: SHA1PadMessage(context);
205: context->Computed = 1;
206: }
207: return 1;
208: }
209:
210: void SHA1Input(SHA1Context *context, const unsigned char *message_array, unsigned length) {
211: if (!length)
212: return;
213: if (context->Computed || context->Corrupted) {
214: context->Corrupted = 1;
215: return;
216: }
217:
218: while(length-- && !context->Corrupted) {
219: context->Message_Block[context->Message_Block_Index++] = (*message_array & 0xFF);
220: context->Length_Low += 8;
221: context->Length_Low &= 0xFFFFFFFF;
222: if (!context->Length_Low && !(context->Length_High=((1+context->Length_High)&0xFFFFFFFF)))
223: context->Corrupted = 1; // too long message
224: if (context->Message_Block_Index == 64)
225: SHA1ProcessMessageBlock(context);
226: message_array++;
1.49 misha 227: }
1.50 misha 228: }
1.49 misha 229:
1.50 misha 230: void SHA1ProcessMessageBlock(SHA1Context *context) {
1.54 misha 231: const unsigned K[] = {0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xCA62C1D6 };
232: int t;
233: unsigned temp, W[80], buf[5];
234: unsigned &A=buf[0], &B=buf[1], &C=buf[2], &D=buf[3], &E=buf[4];
1.50 misha 235:
1.54 misha 236: for(t = 0; t < 16; t++)
237: 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 238:
1.54 misha 239: for(t = 16; t < 80; t++)
240: W[t] = SHA1CircularShift(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]);
1.49 misha 241:
1.54 misha 242: memcpy (buf, context->Message_Digest, sizeof(buf));
243: for(t = 0; t < 20; t++) {
244: temp = (SHA1CircularShift(5,A) + ((B & C) | ((~B) & D)) + E + W[t] + K[0]) & 0xFFFFFFFF;
245: E = D; D = C;
246: C = SHA1CircularShift(30,B);
247: B = A; A = temp;
1.49 misha 248: }
249:
1.54 misha 250: for(t = 20; t < 40; t++) {
251: temp = (SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[1]) & 0xFFFFFFFF;
252: E = D; D = C;
253: C = SHA1CircularShift(30,B);
254: B = A; A = temp;
1.49 misha 255: }
256:
1.54 misha 257: for(t = 40; t < 60; t++) {
258: temp = (SHA1CircularShift(5,A) + ((B & C) | (B & D) | (C & D)) + E + W[t] + K[2]) & 0xFFFFFFFF;
259: E = D; D = C;
260: C = SHA1CircularShift(30,B);
261: B = A; A = temp;
1.49 misha 262: }
263:
1.54 misha 264: for(t = 60; t < 80; t++) {
265: temp = (SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[3]) & 0xFFFFFFFF;
266: E = D; D = C;
267: C = SHA1CircularShift(30,B);
268: B = A; A = temp;
1.49 misha 269: }
270:
1.54 misha 271: for (t = 0; t < 5; t++)
272: context->Message_Digest[t] = (context->Message_Digest[t] + buf[t]) & 0xFFFFFFFF;
1.50 misha 273:
1.54 misha 274: context->Message_Block_Index = 0;
1.50 misha 275: }
1.49 misha 276:
1.50 misha 277: void SHA1PadMessage(SHA1Context *context) {
1.54 misha 278: context->Message_Block[context->Message_Block_Index++] = 0x80;
1.50 misha 279: if (context->Message_Block_Index > 56) {
280: //was 55, one shift
1.54 misha 281: while(context->Message_Block_Index < 64)
282: context->Message_Block[context->Message_Block_Index++] = 0;
283: SHA1ProcessMessageBlock(context);
284: while(context->Message_Block_Index < 56)
285: context->Message_Block[context->Message_Block_Index++] = 0;
1.50 misha 286: } else
1.54 misha 287: while(context->Message_Block_Index < 56)
288: context->Message_Block[context->Message_Block_Index++] = 0;
289: context->Message_Block[56] = (context->Length_High >> 24) & 0xFF;
290: context->Message_Block[57] = (context->Length_High >> 16) & 0xFF;
291: context->Message_Block[58] = (context->Length_High >> 8) & 0xFF;
292: context->Message_Block[59] = (context->Length_High) & 0xFF;
293: context->Message_Block[60] = (context->Length_Low >> 24) & 0xFF;
294: context->Message_Block[61] = (context->Length_Low >> 16) & 0xFF;
295: context->Message_Block[62] = (context->Length_Low >> 8) & 0xFF;
296: context->Message_Block[63] = (context->Length_Low) & 0xFF;
297: SHA1ProcessMessageBlock(context);
1.50 misha 298: }
1.49 misha 299:
1.62 moko 300: #ifdef PA_BIG_ENDIAN
301: #define SWAP(n) (n)
302: #else
303: #define SWAP(n) (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))
304: #endif
305:
1.64 moko 306: void SHA1ReadDigest(void *buf, SHA1Context *c)
1.62 moko 307: {
1.64 moko 308: if(!SHA1Result(c))
1.62 moko 309: throw Exception (PARSER_RUNTIME, 0, "Can not compute SHA1");
310:
1.64 moko 311: ((uint32_t *)buf)[0] = SWAP(c->Message_Digest[0]);
312: ((uint32_t *)buf)[1] = SWAP(c->Message_Digest[1]);
313: ((uint32_t *)buf)[2] = SWAP(c->Message_Digest[2]);
314: ((uint32_t *)buf)[3] = SWAP(c->Message_Digest[3]);
315: ((uint32_t *)buf)[4] = SWAP(c->Message_Digest[4]);
1.62 moko 316: }
317:
1.54 misha 318: static void _sha1(Request& r, MethodParams& params) {
1.70 ! moko 319: const char *string = params.as_string(0, PARAMETER_MUST_BE_STRING).cstr_to_string_body_untaint(String::L_AS_IS).cstr();
1.49 misha 320:
1.54 misha 321: SHA1Context c;
1.64 moko 322: unsigned char digest[20];
1.54 misha 323: SHA1Reset (&c);
324: SHA1Input (&c, (const unsigned char*)string, strlen(string));
1.64 moko 325: SHA1ReadDigest(digest, &c);
1.54 misha 326:
1.62 moko 327: r.write_pass_lang(*new String(hex_string(digest, sizeof(digest), false)));
328: }
329:
1.64 moko 330: void memxor(char *dest, const char *src, size_t n){
331: for (;n>0;n--) *dest++ ^= *src++;
332: }
333:
1.62 moko 334: #define IPAD 0x36
335: #define OPAD 0x5c
336:
1.65 moko 337: #define HMAC(key,init,update,final,blocklen,digestlen){ \
1.64 moko 338: unsigned char tempdigest[digestlen], keydigest[digestlen]; \
339: size_t keylen=strlen(key); \
1.65 moko 340: /* Reduce the key's size, so that it becomes <= blocklen bytes. */ \
341: if (keylen > blocklen){ \
1.64 moko 342: init(&c); \
343: update(&c,(const unsigned char*)hmac, keylen); \
344: final(keydigest, &c); \
345: key = (char *)keydigest; \
346: keylen = digestlen; \
347: } \
348: /* Compute TEMP from KEY and STRING. */ \
1.65 moko 349: char block[blocklen]; \
350: memset (block, IPAD, blocklen); \
1.64 moko 351: memxor (block, key, keylen); \
352: init(&c); \
1.65 moko 353: update(&c, (const unsigned char*)block, blocklen); \
1.69 moko 354: update(&c, (const unsigned char*)data.str, data.length); \
1.64 moko 355: final(tempdigest, &c); \
356: /* Compute result from KEY and TEMP. */ \
1.65 moko 357: memset (block, OPAD, blocklen); \
1.64 moko 358: memxor (block, key, keylen); \
359: init(&c); \
1.65 moko 360: update(&c, (const unsigned char*)block, blocklen); \
1.64 moko 361: update(&c, (const unsigned char*)tempdigest, digestlen); \
1.62 moko 362: }
1.55 misha 363:
1.62 moko 364: static void _digest(Request& r, MethodParams& params) {
1.63 moko 365: const String &smethod = params.as_string(0, PARAMETER_MUST_BE_STRING);
1.69 moko 366:
367: Value& vdata=params.as_no_junction(1, "parameter must be string or file");
368:
369: String::C data;
370: if(const String* sdata=vdata.get_string()){
371: String::Body body=sdata->cstr_to_string_body_untaint(String::L_AS_IS); // explode content, honor tainting changes
372: data=String::C(body.cstr(), body.length());
373: } else {
374: VFile *file=vdata.as_vfile(String::L_AS_IS);
375: data=String::C(file->value_ptr(),file->value_size());
376: }
1.62 moko 377:
1.65 moko 378: enum Method { M_MD5, M_SHA1, M_SHA256, M_SHA512 } method;
1.62 moko 379:
1.63 moko 380: if (smethod == "md5") method = M_MD5;
381: else if (smethod == "sha1" ) method = M_SHA1;
1.65 moko 382: else if (smethod == "sha256" ) method = M_SHA256;
383: else if (smethod == "sha512" ) method = M_SHA512;
1.63 moko 384: else throw Exception(PARSER_RUNTIME, &smethod, "must be 'md5' or 'sha1'");
1.62 moko 385:
386: const char *hmac=0;
1.63 moko 387: enum Format { F_HEX, F_BASE64 } format = F_HEX;
1.62 moko 388:
389: if(params.count() == 3)
390: if(HashStringValue* options=params.as_hash(2)) {
391: int valid_options=0;
392: if(Value* value=options->get("hmac")) {
393: hmac=value->as_string().cstr();
394: valid_options++;
395: }
1.63 moko 396: if(Value* value=options->get("format")) {
397: const String& sformat=value->as_string();
398: if (sformat == "hex") format = F_HEX;
399: else if (sformat == "base64" ) format = F_BASE64;
400: else throw Exception(PARSER_RUNTIME, &sformat, "must be 'hex' or 'base64'");
1.62 moko 401: valid_options++;
402: }
403: if(valid_options!=options->count())
404: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
405: }
406:
407: String::C digest;
408:
1.63 moko 409: if(method == M_MD5){
1.64 moko 410: PA_MD5_CTX c;
411: if(hmac){
1.65 moko 412: HMAC(hmac, pa_MD5Init, pa_MD5Update, pa_MD5Final, 64, 16);
1.64 moko 413: } else {
414: pa_MD5Init(&c);
1.69 moko 415: pa_MD5Update(&c, (const unsigned char*)data.str, data.length);
1.64 moko 416: }
1.62 moko 417: char *str=(char *)pa_malloc(16);
1.64 moko 418: pa_MD5Final((unsigned char *)str, &c);
1.62 moko 419: digest = String::C(str, 16);
420: }
421:
1.63 moko 422: if(method == M_SHA1){
1.62 moko 423: SHA1Context c;
424: if(hmac){
1.65 moko 425: HMAC(hmac, SHA1Reset, SHA1Input, SHA1ReadDigest, 64, 20);
1.62 moko 426: } else {
1.64 moko 427: SHA1Reset(&c);
1.69 moko 428: SHA1Input(&c, (const unsigned char*)data.str, data.length);
1.62 moko 429: }
430: char *str=(char *)pa_malloc(20);
1.64 moko 431: SHA1ReadDigest(str, &c);
1.62 moko 432: digest = String::C(str, 20);
433: }
1.49 misha 434:
1.65 moko 435: if(method == M_SHA256){
436: SHA256_CTX c;
437: if(hmac){
438: HMAC(hmac, pa_SHA256_Init, pa_SHA256_Update, pa_SHA256_Final, 64, SHA256_DIGEST_LENGTH);
439: } else {
440: pa_SHA256_Init(&c);
1.69 moko 441: pa_SHA256_Update(&c, (const unsigned char*)data.str, data.length);
1.65 moko 442: }
443: char *str=(char *)pa_malloc(SHA256_DIGEST_LENGTH);
444: pa_SHA256_Final((unsigned char *)str, &c);
445: digest = String::C(str, SHA256_DIGEST_LENGTH);
446: }
447:
448: if(method == M_SHA512){
449: SHA512_CTX c;
450: if(hmac){
451: HMAC(hmac, pa_SHA512_Init, pa_SHA512_Update, pa_SHA512_Final, 128, SHA512_DIGEST_LENGTH);
452: } else {
453: pa_SHA512_Init(&c);
1.69 moko 454: pa_SHA512_Update(&c, (const unsigned char*)data.str, data.length);
1.65 moko 455: }
456: char *str=(char *)pa_malloc(SHA512_DIGEST_LENGTH);
457: pa_SHA512_Final((unsigned char *)str, &c);
458: digest = String::C(str, SHA512_DIGEST_LENGTH);
459: }
460:
1.63 moko 461: if(format == F_HEX){
1.62 moko 462: r.write_pass_lang(*new String(hex_string((unsigned char *)digest.str, digest.length, false)));
463: }
1.63 moko 464: if(format == F_BASE64){
1.62 moko 465: r.write_pass_lang(*new String(pa_base64_encode(digest.str, digest.length)));
466: }
1.54 misha 467: }
1.49 misha 468:
1.55 misha 469: static void _uuid(Request& r, MethodParams& /*params*/) {
470: uuid uuid=get_uuid();
1.49 misha 471:
1.55 misha 472: const size_t bufsize=36+1/*zero-teminator*/+1/*for faulty snprintfs*/;
473: char* cstr=new(PointerFreeGC) char[bufsize];
1.28 paf 474:
1.55 misha 475: snprintf(cstr, bufsize,
476: "%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X",
477: uuid.time_low, uuid.time_mid, uuid.time_hi_and_version,
478: uuid.clock_seq >> 8, uuid.clock_seq & 0xFF,
479: uuid.node[0], uuid.node[1], uuid.node[2],
480: uuid.node[3], uuid.node[4], uuid.node[5]);
1.28 paf 481:
1.55 misha 482: r.write_pass_lang(*new String(cstr));
1.28 paf 483: }
484:
1.34 paf 485: static void _uid64(Request& r, MethodParams& /*params*/) {
1.30 paf 486:
487: unsigned char id[64/8];
488: random(&id, sizeof(id));
489:
1.34 paf 490: r.write_pass_lang(*new String(hex_string(id, sizeof(id), true)));
1.30 paf 491: }
492:
1.43 misha 493: static void _crc32(Request& r, MethodParams& params) {
1.51 misha 494: const char *string=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr();
1.43 misha 495: r.write_no_lang(*new VInt(pa_crc32(string, strlen(string))));
496: }
497:
1.61 moko 498: static void toBase(unsigned int value, unsigned int base, char*& ptr){
1.57 misha 499: static const char* hex="0123456789ABCDEF";
500: int rest = value % base;
1.58 misha 501: if(value >= base)
1.57 misha 502: toBase( (value-rest)/base, base, ptr);
503: *ptr++=(char)hex[rest];
504: }
505:
506: static void _convert(Request& r, MethodParams& params) {
1.60 moko 507: const char *str=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr();
508:
1.57 misha 509: int base_from=params.as_int(1, "base from must be integer", r);
510: if(base_from < 2 || base_from > 16)
511: throw Exception(PARSER_RUNTIME, 0, "base from must be an integer from 2 to 16");
512:
1.60 moko 513: int base_to=params.as_int(2, "base to must be integer", r);
514: if(base_to < 2 || base_to > 16)
515: throw Exception(PARSER_RUNTIME, 0, "base to must be an integer from 2 to 16");
516:
1.61 moko 517: while(isspace(*str))
1.60 moko 518: str++;
519:
520: if(!*str)
521: return;
522:
523: bool negative=false;
524: if(str[0]=='-') {
525: negative=true;
526: str++;
527: } else if(str[0]=='+') {
528: str++;
529: }
530:
1.61 moko 531: unsigned int value=pa_atoui(str, base_from);
1.57 misha 532:
1.61 moko 533: char result_cstr[sizeof(unsigned int)*8+1/*minus for negative number*/+1/*terminator*/];
1.60 moko 534: char* ptr=result_cstr;
535: if(negative)
536: *ptr++='-';
1.57 misha 537:
538: toBase(value, base_to, ptr);
539: *ptr=0;
540: r.write_pass_lang(*new String(pa_strdup(result_cstr)));
541: }
542:
1.1 parser 543: // constructor
544:
1.34 paf 545: MMath::MMath(): Methoded("math") {
1.1 parser 546: // ^FUNC(expr)
1.28 paf 547: #define ADDX(name, X) \
548: add_native_method(#name, Method::CT_STATIC, _##name, X, X)
549: #define ADD0(name) ADDX(name, 0)
550: #define ADD1(name) ADDX(name, 1)
551: #define ADD2(name) ADDX(name, 2)
1.1 parser 552:
553: ADD1(round); ADD1(floor); ADD1(ceiling);
1.3 parser 554: ADD1(trunc); ADD1(frac);
1.1 parser 555: ADD1(abs); ADD1(sign);
1.46 misha 556: ADD1(exp);
1.48 misha 557: ADD1(log); ADD1(log10);
1.1 parser 558: ADD1(sin); ADD1(asin);
559: ADD1(cos); ADD1(acos);
560: ADD1(tan); ADD1(atan);
1.3 parser 561: ADD1(degrees); ADD1(radians);
1.1 parser 562: ADD1(sqrt);
1.3 parser 563: ADD1(random);
1.1 parser 564:
1.49 misha 565: // ^math:pow(x;y)
1.1 parser 566: ADD2(pow);
567:
1.49 misha 568: // ^math:crypt[password;salt]
1.19 paf 569: ADD2(crypt);
1.26 paf 570:
1.49 misha 571: // ^math:md5[string]
1.26 paf 572: ADD1(md5);
1.5 parser 573:
1.49 misha 574: // ^math:sha1[string]
575: ADD1(sha1);
576:
1.63 moko 577: // ^math:digest[method;string;options]
1.62 moko 578: add_native_method("digest", Method::CT_STATIC, _digest, 2, 3);
579:
1.49 misha 580: // ^math:crc32[string]
1.43 misha 581: ADD1(crc32);
582:
1.49 misha 583: // ^math:uuid[]
1.29 paf 584: ADD0(uuid);
585:
1.49 misha 586: // ^math:uid64[]
1.30 paf 587: ADD0(uid64);
1.57 misha 588:
589: // ^math:convert[number](base-from;base-to)
590: add_native_method("convert", Method::CT_STATIC, _convert, 3, 3);
1.1 parser 591: }
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