Annotation of parser3/src/classes/math.C, revision 1.109
1.1 parser 1: /** @file
2: Parser: @b math parser class.
3:
1.108 moko 4: Copyright (c) 2001-2024 Art. Lebedev Studio (http://www.artlebedev.com)
1.101 moko 5: Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <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"
1.90 moko 13: #include "pa_base64.h"
1.1 parser 14: #include "pa_vint.h"
1.2 parser 15: #include "pa_vmath.h"
1.69 moko 16: #include "pa_vfile.h"
1.1 parser 17: #include "pa_request.h"
1.19 paf 18: #include "pa_md5.h"
1.65 moko 19: #include "pa_sha2.h"
1.55 misha 20: #include "pa_random.h"
1.1 parser 21:
1.34 paf 22: #ifdef HAVE_CRYPT
1.76 moko 23: extern "C" char *crypt(const char* , const char* );
1.20 paf 24: #endif
25:
1.109 ! moko 26: volatile const char * IDENT_MATH_C="$Id: math.C,v 1.108 2024/11/04 03:53:25 moko Exp $";
1.59 moko 27:
1.1 parser 28: // defines
29:
1.20 paf 30: #define MAX_SALT 8
1.1 parser 31:
32: // class
33:
1.34 paf 34: class MMath: public Methoded {
1.81 moko 35: public: // Methoded
36: bool used_directly() { return false; }
37:
1.1 parser 38: public:
1.34 paf 39: MMath();
1.1 parser 40: };
41:
1.34 paf 42: // global variables
43:
1.81 moko 44: DECLARE_CLASS_VAR(math, new MMath);
1.34 paf 45:
1.1 parser 46: // methods
1.34 paf 47:
48: static void _random(Request& r, MethodParams& params) {
1.41 paf 49: double top=params.as_double(0, "range must be expression", r);
1.103 moko 50: if(top<1 || top>INT_MAX)
51: throw Exception(PARSER_RUNTIME, 0, "top(%.15g) must be [1..%u]", top, INT_MAX);
1.83 moko 52: r.write(*new VInt(_random(uint(top))));
1.1 parser 53: }
54:
55:
1.20 paf 56: typedef double(*math1_func_ptr)(double);
1.3 parser 57: static double frac(double param) { return param-trunc(param); }
58: static double degrees(double param) { return param /PI *180; }
59: static double radians(double param) { return param /180 *PI; }
1.1 parser 60:
1.34 paf 61: static void math1(Request& r, MethodParams& params, math1_func_ptr func) {
1.41 paf 62: double param=params.as_double(0, "parameter must be expression", r);
63: double result=func(param);
1.83 moko 64: r.write(*new VDouble(result));
1.1 parser 65: }
66:
67: #define MATH1(name) \
1.34 paf 68: static void _##name(Request& r, MethodParams& params) {\
69: math1(r, params, &name);\
1.1 parser 70: }
1.74 moko 71:
1.1 parser 72: #define MATH1P(name_parser, name_c) \
1.34 paf 73: static void _##name_parser(Request& r, MethodParams& params) {\
74: math1(r, params, &name_c);\
1.1 parser 75: }
1.74 moko 76:
77: MATH1(round)
78: MATH1(floor)
79: MATH1P(ceiling, ceil)
80: MATH1(trunc)
81: MATH1(frac)
82: MATH1P(abs, fabs)
83: MATH1(sign)
84: MATH1(exp)
85: MATH1(log)
86: MATH1(log10)
87: MATH1(sin)
88: MATH1(asin)
89: MATH1(cos)
90: MATH1(acos)
91: MATH1(tan)
92: MATH1(atan)
93: MATH1(degrees)
94: MATH1(radians)
95: MATH1(sqrt)
1.1 parser 96:
97:
98: typedef double (*math2_func_ptr)(double, double);
1.34 paf 99: static void math2(Request& r, MethodParams& params, math2_func_ptr func) {
1.41 paf 100: double a=params.as_double(0, "parameter must be expression", r);
101: double b=params.as_double(1, "parameter must be expression", r);
102: double result=func(a, b);
1.83 moko 103: r.write(*new VDouble(result));
1.1 parser 104: }
105:
106: #define MATH2(name) \
1.34 paf 107: static void _##name(Request& r, MethodParams& params) {\
108: math2(r, params, &name);\
1.1 parser 109: }
1.74 moko 110:
111: MATH2(pow)
1.105 moko 112: MATH2(atan2)
1.1 parser 113:
1.77 moko 114: inline bool is_salt_body_char(unsigned char c) {
1.73 moko 115: return pa_isalnum(c) || c == '.' || c=='/';
1.20 paf 116: }
1.77 moko 117:
1.34 paf 118: static size_t calc_prefix_size(const char* salt) {
1.37 paf 119: if(strlen(salt)) {
1.39 paf 120: if(!is_salt_body_char((unsigned char)salt[0])) { // $... {...
1.34 paf 121: const char* cur=salt+1; // skip
1.39 paf 122: while(is_salt_body_char((unsigned char)*cur++)) // ...$ ...}
1.20 paf 123: ;
124: return cur-salt;
125: } else
126: return 0;
127: } else
128: return 0;
129: }
1.34 paf 130: static void _crypt(Request& r, MethodParams& params) {
131: const char* password=params.as_string(0, "password must be string").cstr();
132: const char* maybe_bodyless_salt=params.as_string(1, "salt must be string").cstr();
1.20 paf 133:
134: size_t prefix_size=calc_prefix_size(maybe_bodyless_salt);
1.34 paf 135: const char* normal_salt;
1.20 paf 136: char normalize_buf[MAX_STRING];
137: if(prefix_size==strlen(maybe_bodyless_salt)) { // bodyless?
1.99 moko 138: pa_strncpy(normalize_buf, maybe_bodyless_salt, MAX_STRING-MAX_SALT);
1.20 paf 139: char *cur=normalize_buf+strlen(normalize_buf);
140: // sould add up MAX_SALT random chars
141: static unsigned char itoa64[] = /* 0 ... 63 => ASCII - 64 */
142: "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
143: for(int i=0; i<MAX_SALT; i++)
144: *cur++=itoa64[_random(64)];
145: *cur=0;
146: normal_salt=normalize_buf;
147: } else
148: normal_salt=maybe_bodyless_salt;
1.19 paf 149:
1.54 misha 150: /* FreeBSD style MD5 string
151: */
152: if(strncmp(normal_salt, PA_MD5PW_ID, PA_MD5PW_IDLEN) == 0) {
1.19 paf 153: const size_t sample_size=120;
1.34 paf 154: char *sample_buf=new(PointerFreeGC) char[sample_size];
155: pa_MD5Encode((const unsigned char *)password,
156: (const unsigned char *)normal_salt, sample_buf, sample_size);
157: String sample(sample_buf);
1.83 moko 158: r.write(sample);
1.54 misha 159: } else {
1.20 paf 160: #ifdef HAVE_CRYPT
1.34 paf 161: const char* static_sample_buf=crypt(password, normal_salt);
162: if(!static_sample_buf // nothing generated
163: || !static_sample_buf[0] // generated nothing
164: || strncmp(static_sample_buf, normal_salt, prefix_size)!=0) // salt prefix not preserved
1.45 misha 165: throw Exception(PARSER_RUNTIME,
1.34 paf 166: 0,
167: "crypt on this platform does not support '%.*s' salt prefix", prefix_size, normal_salt);
1.20 paf 168:
1.83 moko 169: r.write(String(pa_strdup(static_sample_buf)));
1.20 paf 170: #else
1.45 misha 171: throw Exception(PARSER_RUNTIME,
1.34 paf 172: 0,
1.19 paf 173: "salt must start with '" PA_MD5PW_ID "'");
1.20 paf 174: #endif
175: }
1.19 paf 176: }
177:
1.34 paf 178: static void _md5(Request& r, MethodParams& params) {
1.72 moko 179: 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 180:
181: PA_MD5_CTX context;
182: unsigned char digest[16];
1.34 paf 183: pa_MD5Init(&context);
184: pa_MD5Update(&context, (const unsigned char*)string, strlen(string));
185: pa_MD5Final(digest, &context);
1.27 paf 186:
1.83 moko 187: r.write(*new String(hex_string(digest, sizeof(digest), false)));
1.26 paf 188: }
189:
1.49 misha 190:
191: //SHA-1:
192:
1.50 misha 193: struct SHA1Context {
1.54 misha 194: unsigned Message_Digest[5], Length_Low, Length_High;
195: unsigned int Message_Block[64];
196: int Message_Block_Index, Computed, Corrupted;
1.50 misha 197: };
1.49 misha 198:
199: #define SHA1CircularShift(bits,word) ((((word) << (bits)) & 0xFFFFFFFF)|((word) >> (32-(bits))))
200: void SHA1ProcessMessageBlock(SHA1Context *);
201: void SHA1PadMessage(SHA1Context *);
1.50 misha 202: void SHA1Reset(SHA1Context *context) {
1.54 misha 203: context->Length_Low = context->Length_High = context->Message_Block_Index = 0;
204: context->Message_Digest[0] = 0x67452301;
205: context->Message_Digest[1] = 0xEFCDAB89;
206: context->Message_Digest[2] = 0x98BADCFE;
207: context->Message_Digest[3] = 0x10325476;
208: context->Message_Digest[4] = 0xC3D2E1F0;
209: context->Computed = context->Corrupted = 0;
1.50 misha 210: }
1.49 misha 211:
1.50 misha 212: int SHA1Result(SHA1Context *context) {
1.54 misha 213: if (context->Corrupted)
214: return 0;
215: if (!context->Computed) {
216: SHA1PadMessage(context);
217: context->Computed = 1;
218: }
219: return 1;
220: }
221:
222: void SHA1Input(SHA1Context *context, const unsigned char *message_array, unsigned length) {
223: if (!length)
224: return;
225: if (context->Computed || context->Corrupted) {
226: context->Corrupted = 1;
227: return;
228: }
229:
230: while(length-- && !context->Corrupted) {
231: context->Message_Block[context->Message_Block_Index++] = (*message_array & 0xFF);
232: context->Length_Low += 8;
233: context->Length_Low &= 0xFFFFFFFF;
234: if (!context->Length_Low && !(context->Length_High=((1+context->Length_High)&0xFFFFFFFF)))
235: context->Corrupted = 1; // too long message
236: if (context->Message_Block_Index == 64)
237: SHA1ProcessMessageBlock(context);
238: message_array++;
1.49 misha 239: }
1.50 misha 240: }
1.49 misha 241:
1.50 misha 242: void SHA1ProcessMessageBlock(SHA1Context *context) {
1.54 misha 243: const unsigned K[] = {0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xCA62C1D6 };
244: int t;
245: unsigned temp, W[80], buf[5];
246: unsigned &A=buf[0], &B=buf[1], &C=buf[2], &D=buf[3], &E=buf[4];
1.50 misha 247:
1.54 misha 248: for(t = 0; t < 16; t++)
249: 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 250:
1.54 misha 251: for(t = 16; t < 80; t++)
252: W[t] = SHA1CircularShift(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]);
1.49 misha 253:
1.54 misha 254: memcpy (buf, context->Message_Digest, sizeof(buf));
255: for(t = 0; t < 20; t++) {
256: temp = (SHA1CircularShift(5,A) + ((B & C) | ((~B) & D)) + E + W[t] + K[0]) & 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 = 20; t < 40; t++) {
263: temp = (SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[1]) & 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 = 40; t < 60; t++) {
270: temp = (SHA1CircularShift(5,A) + ((B & C) | (B & D) | (C & D)) + E + W[t] + K[2]) & 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 = 60; t < 80; t++) {
277: temp = (SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[3]) & 0xFFFFFFFF;
278: E = D; D = C;
279: C = SHA1CircularShift(30,B);
280: B = A; A = temp;
1.49 misha 281: }
282:
1.54 misha 283: for (t = 0; t < 5; t++)
284: context->Message_Digest[t] = (context->Message_Digest[t] + buf[t]) & 0xFFFFFFFF;
1.50 misha 285:
1.54 misha 286: context->Message_Block_Index = 0;
1.50 misha 287: }
1.49 misha 288:
1.50 misha 289: void SHA1PadMessage(SHA1Context *context) {
1.54 misha 290: context->Message_Block[context->Message_Block_Index++] = 0x80;
1.50 misha 291: if (context->Message_Block_Index > 56) {
292: //was 55, one shift
1.54 misha 293: while(context->Message_Block_Index < 64)
294: context->Message_Block[context->Message_Block_Index++] = 0;
295: SHA1ProcessMessageBlock(context);
296: while(context->Message_Block_Index < 56)
297: context->Message_Block[context->Message_Block_Index++] = 0;
1.50 misha 298: } else
1.54 misha 299: while(context->Message_Block_Index < 56)
300: context->Message_Block[context->Message_Block_Index++] = 0;
301: context->Message_Block[56] = (context->Length_High >> 24) & 0xFF;
302: context->Message_Block[57] = (context->Length_High >> 16) & 0xFF;
303: context->Message_Block[58] = (context->Length_High >> 8) & 0xFF;
304: context->Message_Block[59] = (context->Length_High) & 0xFF;
305: context->Message_Block[60] = (context->Length_Low >> 24) & 0xFF;
306: context->Message_Block[61] = (context->Length_Low >> 16) & 0xFF;
307: context->Message_Block[62] = (context->Length_Low >> 8) & 0xFF;
308: context->Message_Block[63] = (context->Length_Low) & 0xFF;
309: SHA1ProcessMessageBlock(context);
1.50 misha 310: }
1.49 misha 311:
1.62 moko 312: #ifdef PA_BIG_ENDIAN
313: #define SWAP(n) (n)
314: #else
315: #define SWAP(n) (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))
316: #endif
317:
1.64 moko 318: void SHA1ReadDigest(void *buf, SHA1Context *c)
1.62 moko 319: {
1.64 moko 320: if(!SHA1Result(c))
1.106 moko 321: throw Exception (PARSER_RUNTIME, 0, "Cannot compute SHA1");
1.62 moko 322:
1.64 moko 323: ((uint32_t *)buf)[0] = SWAP(c->Message_Digest[0]);
324: ((uint32_t *)buf)[1] = SWAP(c->Message_Digest[1]);
325: ((uint32_t *)buf)[2] = SWAP(c->Message_Digest[2]);
326: ((uint32_t *)buf)[3] = SWAP(c->Message_Digest[3]);
327: ((uint32_t *)buf)[4] = SWAP(c->Message_Digest[4]);
1.62 moko 328: }
329:
1.54 misha 330: static void _sha1(Request& r, MethodParams& params) {
1.72 moko 331: 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 332:
1.54 misha 333: SHA1Context c;
1.64 moko 334: unsigned char digest[20];
1.54 misha 335: SHA1Reset (&c);
336: SHA1Input (&c, (const unsigned char*)string, strlen(string));
1.64 moko 337: SHA1ReadDigest(digest, &c);
1.54 misha 338:
1.83 moko 339: r.write(*new String(hex_string(digest, sizeof(digest), false)));
1.62 moko 340: }
341:
1.87 moko 342: String::C getData(Value& vdata, Request& r){
343: if(const String* sdata=vdata.get_string()){
344: String::Body body=sdata->cstr_to_string_body_untaint(String::L_AS_IS, r.connection(false), &r.charsets); // explode content, honor tainting changes
345: return String::C(body.cstr(), body.length());
346: } else {
1.98 moko 347: VFile *file=vdata.as_vfile();
1.87 moko 348: return String::C(file->value_ptr(),file->value_size());
349: }
350: }
351:
1.64 moko 352: void memxor(char *dest, const char *src, size_t n){
353: for (;n>0;n--) *dest++ ^= *src++;
354: }
355:
1.62 moko 356: #define IPAD 0x36
357: #define OPAD 0x5c
358:
1.109 ! moko 359: #define HMAC(key,keylen,init,update,final,blocklen,digestlen){ \
1.64 moko 360: unsigned char tempdigest[digestlen], keydigest[digestlen]; \
1.65 moko 361: /* Reduce the key's size, so that it becomes <= blocklen bytes. */ \
362: if (keylen > blocklen){ \
1.64 moko 363: init(&c); \
1.109 ! moko 364: update(&c,(const unsigned char*)key, keylen); \
1.64 moko 365: final(keydigest, &c); \
366: key = (char *)keydigest; \
367: keylen = digestlen; \
368: } \
369: /* Compute TEMP from KEY and STRING. */ \
1.65 moko 370: char block[blocklen]; \
371: memset (block, IPAD, blocklen); \
1.64 moko 372: memxor (block, key, keylen); \
373: init(&c); \
1.65 moko 374: update(&c, (const unsigned char*)block, blocklen); \
1.69 moko 375: update(&c, (const unsigned char*)data.str, data.length); \
1.64 moko 376: final(tempdigest, &c); \
377: /* Compute result from KEY and TEMP. */ \
1.65 moko 378: memset (block, OPAD, blocklen); \
1.64 moko 379: memxor (block, key, keylen); \
380: init(&c); \
1.65 moko 381: update(&c, (const unsigned char*)block, blocklen); \
1.64 moko 382: update(&c, (const unsigned char*)tempdigest, digestlen); \
1.62 moko 383: }
1.55 misha 384:
1.62 moko 385: static void _digest(Request& r, MethodParams& params) {
1.63 moko 386: const String &smethod = params.as_string(0, PARAMETER_MUST_BE_STRING);
1.69 moko 387:
1.87 moko 388: String::C data=getData(params.as_no_junction(1, "parameter must be string or file"), r);
1.62 moko 389:
1.65 moko 390: enum Method { M_MD5, M_SHA1, M_SHA256, M_SHA512 } method;
1.62 moko 391:
1.63 moko 392: if (smethod == "md5") method = M_MD5;
393: else if (smethod == "sha1" ) method = M_SHA1;
1.65 moko 394: else if (smethod == "sha256" ) method = M_SHA256;
395: else if (smethod == "sha512" ) method = M_SHA512;
1.86 moko 396: else throw Exception(PARSER_RUNTIME, &smethod, "must be 'md5' or 'sha1' or 'sha256' or 'sha512'");
1.62 moko 397:
398: const char *hmac=0;
1.109 ! moko 399: size_t hmac_len=0;
! 400:
! 401: enum Format { F_HEX, F_BASE64, F_FILE } format = F_HEX;
1.62 moko 402:
403: if(params.count() == 3)
404: if(HashStringValue* options=params.as_hash(2)) {
405: int valid_options=0;
406: if(Value* value=options->get("hmac")) {
1.109 ! moko 407: if(VFile* vfile=dynamic_cast<VFile *>(value)){
! 408: hmac=(const char* )vfile->value_ptr();
! 409: hmac_len=vfile->value_size();
! 410: } else {
! 411: hmac=value->as_string().cstr();
! 412: hmac_len=strlen(hmac);
! 413: }
1.62 moko 414: valid_options++;
415: }
1.63 moko 416: if(Value* value=options->get("format")) {
417: const String& sformat=value->as_string();
418: if (sformat == "hex") format = F_HEX;
419: else if (sformat == "base64" ) format = F_BASE64;
1.109 ! moko 420: else if (sformat == "file" ) format = F_FILE;
1.63 moko 421: else throw Exception(PARSER_RUNTIME, &sformat, "must be 'hex' or 'base64'");
1.62 moko 422: valid_options++;
423: }
424: if(valid_options!=options->count())
425: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
426: }
427:
428: String::C digest;
429:
1.63 moko 430: if(method == M_MD5){
1.64 moko 431: PA_MD5_CTX c;
432: if(hmac){
1.109 ! moko 433: HMAC(hmac, hmac_len, pa_MD5Init, pa_MD5Update, pa_MD5Final, 64, 16);
1.64 moko 434: } else {
435: pa_MD5Init(&c);
1.69 moko 436: pa_MD5Update(&c, (const unsigned char*)data.str, data.length);
1.64 moko 437: }
1.62 moko 438: char *str=(char *)pa_malloc(16);
1.64 moko 439: pa_MD5Final((unsigned char *)str, &c);
1.62 moko 440: digest = String::C(str, 16);
441: }
442:
1.63 moko 443: if(method == M_SHA1){
1.62 moko 444: SHA1Context c;
445: if(hmac){
1.109 ! moko 446: HMAC(hmac, hmac_len, SHA1Reset, SHA1Input, SHA1ReadDigest, 64, 20);
1.62 moko 447: } else {
1.64 moko 448: SHA1Reset(&c);
1.69 moko 449: SHA1Input(&c, (const unsigned char*)data.str, data.length);
1.62 moko 450: }
451: char *str=(char *)pa_malloc(20);
1.64 moko 452: SHA1ReadDigest(str, &c);
1.62 moko 453: digest = String::C(str, 20);
454: }
1.49 misha 455:
1.65 moko 456: if(method == M_SHA256){
457: SHA256_CTX c;
458: if(hmac){
1.109 ! moko 459: HMAC(hmac, hmac_len, pa_SHA256_Init, pa_SHA256_Update, pa_SHA256_Final, 64, SHA256_DIGEST_LENGTH);
1.65 moko 460: } else {
461: pa_SHA256_Init(&c);
1.69 moko 462: pa_SHA256_Update(&c, (const unsigned char*)data.str, data.length);
1.65 moko 463: }
464: char *str=(char *)pa_malloc(SHA256_DIGEST_LENGTH);
465: pa_SHA256_Final((unsigned char *)str, &c);
466: digest = String::C(str, SHA256_DIGEST_LENGTH);
467: }
468:
469: if(method == M_SHA512){
470: SHA512_CTX c;
471: if(hmac){
1.109 ! moko 472: HMAC(hmac, hmac_len, pa_SHA512_Init, pa_SHA512_Update, pa_SHA512_Final, 128, SHA512_DIGEST_LENGTH);
1.65 moko 473: } else {
474: pa_SHA512_Init(&c);
1.69 moko 475: pa_SHA512_Update(&c, (const unsigned char*)data.str, data.length);
1.65 moko 476: }
477: char *str=(char *)pa_malloc(SHA512_DIGEST_LENGTH);
478: pa_SHA512_Final((unsigned char *)str, &c);
479: digest = String::C(str, SHA512_DIGEST_LENGTH);
480: }
481:
1.63 moko 482: if(format == F_HEX){
1.83 moko 483: r.write(*new String(hex_string((unsigned char *)digest.str, digest.length, false)));
1.62 moko 484: }
1.63 moko 485: if(format == F_BASE64){
1.94 moko 486: r.write(*new String(pa_base64_encode(digest.str, digest.length, Base64Options(false /*no wrap*/))));
1.62 moko 487: }
1.109 ! moko 488: if(format == F_FILE){
! 489: VFile& result=*new VFile;
! 490: result.set_binary(true, digest.str, digest.length);
! 491: r.write(result);
! 492: }
1.54 misha 493: }
1.49 misha 494:
1.97 moko 495: static void _uuid(Request& r, MethodParams& params) {
496: bool lower=false;
497: bool solid=false;
498:
499: if (params.count() == 1)
500: if (HashStringValue* options = params.as_hash(0)) {
501: int valid_options = 0;
502: if (Value* vlower = options->get("lower")) {
503: lower = r.process(*vlower).as_bool();
504: valid_options++;
505: }
506: if (Value* vsolid = options->get("solid")) {
507: solid = r.process(*vsolid).as_bool();
508: valid_options++;
509: }
510: if (valid_options != options->count())
511: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
512: }
513:
514: r.write(*new String(get_uuid_cstr(lower, solid)));
1.28 paf 515: }
516:
1.100 moko 517: static void _uuid7(Request& r, MethodParams& params) {
518: bool lower=false;
519: bool solid=false;
520:
521: if (params.count() == 1)
522: if (HashStringValue* options = params.as_hash(0)) {
523: int valid_options = 0;
524: if (Value* vlower = options->get("lower")) {
525: lower = r.process(*vlower).as_bool();
526: valid_options++;
527: }
528: if (Value* vsolid = options->get("solid")) {
529: solid = r.process(*vsolid).as_bool();
530: valid_options++;
531: }
532: if (valid_options != options->count())
533: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
534: }
535:
536: r.write(*new String(get_uuid7_cstr(lower, solid)));
537: }
538:
1.97 moko 539: static void _uid64(Request& r, MethodParams& params) {
540: bool lower = false;
541:
542: if (params.count() == 1)
543: if (HashStringValue* options = params.as_hash(0)) {
544: int valid_options = 0;
545: if (Value* vlower = options->get("lower")) {
546: lower = r.process(*vlower).as_bool();
547: valid_options++;
548: }
549: if (valid_options != options->count())
550: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
551: }
552:
1.30 paf 553: unsigned char id[64/8];
554: random(&id, sizeof(id));
555:
1.97 moko 556: r.write(*new String(hex_string(id, sizeof(id), !lower)));
1.30 paf 557: }
558:
1.43 misha 559: static void _crc32(Request& r, MethodParams& params) {
1.51 misha 560: const char *string=params.as_string(0, PARAMETER_MUST_BE_STRING).cstr();
1.102 moko 561: r.write(*new VDouble((uint)pa_crc32(string, strlen(string))));
1.43 misha 562: }
563:
1.89 moko 564: static const char* abc_hex = "0123456789ABCDEF";
1.87 moko 565:
1.89 moko 566: static unsigned char hex_lookup[256] = {
1.87 moko 567: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
568: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
569: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
570: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0,
571: 0,10,11,12,13,14,15, 0, 0, 0, 0, 0, 0, 0, 0, 0,
572: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
573: 0,10,11,12,13,14,15, 0, 0, 0, 0, 0, 0, 0, 0, 0
574: };
575:
1.89 moko 576: static unsigned char abc_lookup[256] = {};
577: static unsigned char abc_256_lookup[256] = {};
1.87 moko 578:
1.89 moko 579: inline unsigned char *init_abc_256() {
580: if(!abc_256_lookup[255])
581: for(int i=0; i<256; i++) abc_256_lookup[i] = (unsigned char)i;
1.87 moko 582: return abc_256_lookup;
1.57 misha 583: }
584:
585: static void _convert(Request& r, MethodParams& params) {
1.87 moko 586: String::C data=getData(params.as_no_junction(0, "parameter must be string or file"), r);
1.60 moko 587:
1.87 moko 588: bool abc_mode = true;
589: unsigned char *lookup;
590: const char *abc_from;
591: int base_from;
592:
1.89 moko 593: if(params[1].is_string()) {
1.87 moko 594: abc_from = params[1].get_string()->cstr();
595: base_from = strlen(abc_from);
596: if(base_from < 2)
597: throw Exception(PARSER_RUNTIME, 0, "alphabet 'from' must contain at least 2 characters");
598: lookup = abc_lookup;
599: memset(abc_lookup,0,sizeof(abc_lookup));
600: for(int i=0; i<base_from; i++) abc_lookup[(unsigned char)abc_from[i]] = (unsigned char)i;
601: } else {
602: base_from=params.as_int(1, "base 'from' must be integer or string", r);
603: if(base_from < 2 || base_from > 16 && base_from != 256)
604: throw Exception(PARSER_RUNTIME, 0, "base 'from' must be an integer from 2 to 16 or 256");
1.89 moko 605: if (base_from == 256) {
1.87 moko 606: abc_from = "";
607: lookup = init_abc_256();
608: } else {
609: abc_mode = false;
610: abc_from = abc_hex;
611: lookup = hex_lookup;
612: }
613: }
1.57 misha 614:
1.87 moko 615: const char *abc_to;
616: int base_to;
1.60 moko 617:
1.89 moko 618: if(params[2].is_string()) {
1.87 moko 619: abc_to=params[2].get_string()->cstr();
620: base_to=strlen(abc_to);
621: if(base_to < 2)
622: throw Exception(PARSER_RUNTIME, 0, "alphabet 'to' must contain at least 2 characters");
623: } else {
624: base_to=params.as_int(2, "base 'to' must be integer or string", r);
625: if(base_to < 2 || base_to > 16 && base_to != 256)
626: throw Exception(PARSER_RUNTIME, 0, "base 'to' must be an integer from 2 to 16 or 256");
1.89 moko 627: if (base_to == 256) {
1.87 moko 628: abc_to = (char *)init_abc_256();
629: } else {
630: abc_to = abc_hex;
631: }
632: }
633:
634: VFile* result_file = 0;
1.60 moko 635:
1.87 moko 636: if(params.count() == 4)
637: if(HashStringValue* options=params.as_hash(3)) {
638: int valid_options=0;
639: if(Value* value=options->get("format")) {
640: const String& sformat=value->as_string();
641: if (sformat == "file" ) result_file = new VFile;
642: else if (sformat != "string") throw Exception(PARSER_RUNTIME, &sformat, "must be 'string' or 'file'");
643: valid_options++;
644: }
645: if(valid_options!=options->count())
646: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
647: }
1.60 moko 648:
649: bool negative=false;
1.87 moko 650:
651: // converting digits to their numeric values
652:
653: unsigned char *src=(unsigned char *)pa_strdup(data.str, data.length);
654: const unsigned char *src_end = src + data.length;
655:
656: unsigned char *c;
657:
658: if(abc_mode){
659:
1.89 moko 660: for(c=src;c<src_end;c++) {
1.87 moko 661: unsigned char digit=lookup[*c];
662: if(!digit && *c != abc_from[0])
1.107 moko 663: throw Exception("number.format", 0, "'%c' is an invalid digit", *c);
1.87 moko 664: *c=digit;
665: }
666:
667: } else {
668: // numbers mode, allow whitespace and sign
669:
670: while(isspace(*src))
671: src++;
672:
673: if(src[0]=='-') {
674: negative=true;
675: src++;
1.104 moko 676: if(!*src || isspace(*src))
1.107 moko 677: throw Exception("number.format", 0, "'-' is an invalid number");
1.87 moko 678: } else if(src[0]=='+') {
679: src++;
1.104 moko 680: if(!*src || isspace(*src))
1.107 moko 681: throw Exception("number.format", 0, "'+' is an invalid number");
1.87 moko 682: }
683:
684: for(c=src;c<src_end;c++) {
685: unsigned char digit=lookup[*c];
686: if(!digit && *c != abc_from[0] || digit>=base_from) {
687: for(unsigned char *s=c;s<src_end;s++)
688: if(!isspace(*s))
1.107 moko 689: throw Exception("number.format", 0, "'%c' is an invalid digit", *s);
1.87 moko 690: src_end=c;
691: break;
692: }
693: *c=digit;
694: }
695:
1.60 moko 696: }
697:
1.89 moko 698: if(src==src_end) {
1.87 moko 699: if(result_file)
700: r.write(*result_file);
701: return;
702: }
703:
1.92 moko 704: // core, using log since log2 is not present in FreeBSD < 8.X
1.87 moko 705:
1.95 moko 706: Array<char> remainders((size_t)round(data.length * log((double)base_from) / log((double)base_to)) + 1);
1.57 misha 707:
1.87 moko 708: do {
709: int carry = 0;
710: unsigned char *dst = src;
711: for (c=src; c<src_end; c++) {
712: carry = carry * base_from + *c;
713: if (carry >= base_to) {
1.95 moko 714: *(dst++) = (unsigned char)(carry / base_to);
1.87 moko 715: carry %= base_to;
716: } else if (dst > src) {
717: *(dst++) = 0;
718: }
719: }
720: src_end = dst;
721: remainders += abc_to[carry];
722: } while (src_end > src);
723:
724: // result processing
725:
726: size_t result_length = negative + remainders.count();
727: char *result_str = (char *)pa_malloc_atomic(result_length+1);
1.60 moko 728: if(negative)
1.87 moko 729: result_str[0] = '-';
1.95 moko 730: for(size_t i=0; i<remainders.count(); i++)
1.87 moko 731: result_str[result_length - 1 - i] = remainders[i];
732: result_str[result_length]='\0';
733:
1.89 moko 734: if(result_file) {
1.88 moko 735: result_file->set(true /*tainted*/, 0 /*binary*/, result_str, result_length, 0, 0, &r);
1.87 moko 736: r.write(*result_file);
737: } else {
1.91 moko 738: if(memchr(result_str, 0, result_length))
739: throw Exception(PARSER_RUNTIME, 0, "Invalid \\x00 character found while converting to string. Convert to file instead.");
740:
741: fix_line_breaks(result_str, result_length);
742:
743: if(result_length)
744: r.write(*new String(result_str, String::L_TAINTED));
1.87 moko 745: }
1.57 misha 746: }
747:
1.1 parser 748: // constructor
749:
1.34 paf 750: MMath::MMath(): Methoded("math") {
1.1 parser 751: // ^FUNC(expr)
1.105 moko 752: #define ADDN(name, N) \
753: add_native_method(#name, Method::CT_STATIC, _##name, N, N)
754: #define ADD1(name) ADDN(name, 1)
1.1 parser 755:
756: ADD1(round); ADD1(floor); ADD1(ceiling);
1.3 parser 757: ADD1(trunc); ADD1(frac);
1.1 parser 758: ADD1(abs); ADD1(sign);
1.46 misha 759: ADD1(exp);
1.48 misha 760: ADD1(log); ADD1(log10);
1.87 moko 761: ADD1(sin); ADD1(asin);
762: ADD1(cos); ADD1(acos);
1.105 moko 763: ADD1(tan); ADD1(atan); ADDN(atan2, 2);
1.3 parser 764: ADD1(degrees); ADD1(radians);
1.1 parser 765: ADD1(sqrt);
1.3 parser 766: ADD1(random);
1.1 parser 767:
1.49 misha 768: // ^math:pow(x;y)
1.105 moko 769: ADDN(pow, 2);
1.1 parser 770:
1.49 misha 771: // ^math:crypt[password;salt]
1.105 moko 772: ADDN(crypt, 2);
1.26 paf 773:
1.49 misha 774: // ^math:md5[string]
1.26 paf 775: ADD1(md5);
1.5 parser 776:
1.49 misha 777: // ^math:sha1[string]
778: ADD1(sha1);
779:
1.71 moko 780: // ^math:digest[method;string|file;options]
1.62 moko 781: add_native_method("digest", Method::CT_STATIC, _digest, 2, 3);
782:
1.49 misha 783: // ^math:crc32[string]
1.43 misha 784: ADD1(crc32);
785:
1.49 misha 786: // ^math:uuid[]
1.97 moko 787: // ^math:uuid[options hash]
788: add_native_method("uuid", Method::CT_STATIC, _uuid, 0, 1);
1.29 paf 789:
1.100 moko 790: // ^math:uuid7[]
791: // ^math:uuid7[options hash]
792: add_native_method("uuid7", Method::CT_STATIC, _uuid7, 0, 1);
793:
1.49 misha 794: // ^math:uid64[]
1.97 moko 795: // ^math:uid64[options hash]
796: add_native_method("uid64", Method::CT_STATIC, _uid64, 0, 1);
1.57 misha 797:
1.87 moko 798: // ^math:convert[number|file](base-from)|[abc_from](base-to)|[abc_to][options]
799: add_native_method("convert", Method::CT_STATIC, _convert, 3, 4);
1.1 parser 800: }
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