Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 1 | /* MD5 module */ |
| 2 | |
| 3 | /* This module provides an interface to the MD5 algorithm */ |
| 4 | |
| 5 | /* See below for information about the original code this module was |
| 6 | based upon. Additional work performed by: |
| 7 | |
| 8 | Andrew Kuchling (amk@amk.ca) |
| 9 | Greg Stein (gstein@lyra.org) |
| 10 | Trevor Perrin (trevp@trevp.net) |
| 11 | |
| 12 | Copyright (C) 2005-2007 Gregory P. Smith (greg@krypto.org) |
| 13 | Licensed to PSF under a Contributor Agreement. |
| 14 | |
| 15 | */ |
| 16 | |
| 17 | /* MD5 objects */ |
| 18 | |
| 19 | #include "Python.h" |
| 20 | |
| 21 | |
| 22 | /* Some useful types */ |
| 23 | |
| 24 | #if SIZEOF_INT == 4 |
| 25 | typedef unsigned int MD5_INT32; /* 32-bit integer */ |
| 26 | typedef PY_LONG_LONG MD5_INT64; /* 64-bit integer */ |
| 27 | #else |
| 28 | /* not defined. compilation will die. */ |
| 29 | #endif |
| 30 | |
| 31 | /* The MD5 block size and message digest sizes, in bytes */ |
| 32 | |
| 33 | #define MD5_BLOCKSIZE 64 |
| 34 | #define MD5_DIGESTSIZE 16 |
| 35 | |
| 36 | /* The structure for storing MD5 info */ |
| 37 | |
| 38 | struct md5_state { |
| 39 | MD5_INT64 length; |
| 40 | MD5_INT32 state[4], curlen; |
| 41 | unsigned char buf[MD5_BLOCKSIZE]; |
| 42 | }; |
| 43 | |
| 44 | typedef struct { |
| 45 | PyObject_HEAD |
| 46 | |
| 47 | struct md5_state hash_state; |
| 48 | } MD5object; |
| 49 | |
| 50 | |
| 51 | /* ------------------------------------------------------------------------ |
| 52 | * |
| 53 | * This code for the MD5 algorithm was noted as public domain. The |
| 54 | * original headers are pasted below. |
| 55 | * |
| 56 | * Several changes have been made to make it more compatible with the |
| 57 | * Python environment and desired interface. |
| 58 | * |
| 59 | */ |
| 60 | |
| 61 | /* LibTomCrypt, modular cryptographic library -- Tom St Denis |
| 62 | * |
| 63 | * LibTomCrypt is a library that provides various cryptographic |
| 64 | * algorithms in a highly modular and flexible manner. |
| 65 | * |
| 66 | * The library is free for all purposes without any express |
| 67 | * guarantee it works. |
| 68 | * |
| 69 | * Tom St Denis, tomstdenis@gmail.com, http://libtom.org |
| 70 | */ |
| 71 | |
| 72 | /* rotate the hard way (platform optimizations could be done) */ |
| 73 | #define ROLc(x, y) ( (((unsigned long)(x)<<(unsigned long)((y)&31)) | (((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL) |
| 74 | |
| 75 | /* Endian Neutral macros that work on all platforms */ |
| 76 | |
| 77 | #define STORE32L(x, y) \ |
| 78 | { (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \ |
| 79 | (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); } |
| 80 | |
| 81 | #define LOAD32L(x, y) \ |
| 82 | { x = ((unsigned long)((y)[3] & 255)<<24) | \ |
| 83 | ((unsigned long)((y)[2] & 255)<<16) | \ |
| 84 | ((unsigned long)((y)[1] & 255)<<8) | \ |
| 85 | ((unsigned long)((y)[0] & 255)); } |
| 86 | |
| 87 | #define STORE64L(x, y) \ |
| 88 | { (y)[7] = (unsigned char)(((x)>>56)&255); (y)[6] = (unsigned char)(((x)>>48)&255); \ |
| 89 | (y)[5] = (unsigned char)(((x)>>40)&255); (y)[4] = (unsigned char)(((x)>>32)&255); \ |
| 90 | (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \ |
| 91 | (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); } |
| 92 | |
| 93 | #ifndef MIN |
| 94 | #define MIN(x, y) ( ((x)<(y))?(x):(y) ) |
| 95 | #endif |
| 96 | |
| 97 | |
| 98 | /* MD5 macros */ |
| 99 | |
| 100 | #define F(x,y,z) (z ^ (x & (y ^ z))) |
| 101 | #define G(x,y,z) (y ^ (z & (y ^ x))) |
| 102 | #define H(x,y,z) (x^y^z) |
| 103 | #define I(x,y,z) (y^(x|(~z))) |
| 104 | |
| 105 | #define FF(a,b,c,d,M,s,t) \ |
| 106 | a = (a + F(b,c,d) + M + t); a = ROLc(a, s) + b; |
| 107 | |
| 108 | #define GG(a,b,c,d,M,s,t) \ |
| 109 | a = (a + G(b,c,d) + M + t); a = ROLc(a, s) + b; |
| 110 | |
| 111 | #define HH(a,b,c,d,M,s,t) \ |
| 112 | a = (a + H(b,c,d) + M + t); a = ROLc(a, s) + b; |
| 113 | |
| 114 | #define II(a,b,c,d,M,s,t) \ |
| 115 | a = (a + I(b,c,d) + M + t); a = ROLc(a, s) + b; |
| 116 | |
| 117 | |
| 118 | static void md5_compress(struct md5_state *md5, unsigned char *buf) |
| 119 | { |
| 120 | MD5_INT32 i, W[16], a, b, c, d; |
| 121 | |
| 122 | assert(md5 != NULL); |
| 123 | assert(buf != NULL); |
| 124 | |
| 125 | /* copy the state into 512-bits into W[0..15] */ |
| 126 | for (i = 0; i < 16; i++) { |
| 127 | LOAD32L(W[i], buf + (4*i)); |
| 128 | } |
| 129 | |
| 130 | /* copy state */ |
| 131 | a = md5->state[0]; |
| 132 | b = md5->state[1]; |
| 133 | c = md5->state[2]; |
| 134 | d = md5->state[3]; |
| 135 | |
| 136 | FF(a,b,c,d,W[0],7,0xd76aa478UL) |
| 137 | FF(d,a,b,c,W[1],12,0xe8c7b756UL) |
| 138 | FF(c,d,a,b,W[2],17,0x242070dbUL) |
| 139 | FF(b,c,d,a,W[3],22,0xc1bdceeeUL) |
| 140 | FF(a,b,c,d,W[4],7,0xf57c0fafUL) |
| 141 | FF(d,a,b,c,W[5],12,0x4787c62aUL) |
| 142 | FF(c,d,a,b,W[6],17,0xa8304613UL) |
| 143 | FF(b,c,d,a,W[7],22,0xfd469501UL) |
| 144 | FF(a,b,c,d,W[8],7,0x698098d8UL) |
| 145 | FF(d,a,b,c,W[9],12,0x8b44f7afUL) |
| 146 | FF(c,d,a,b,W[10],17,0xffff5bb1UL) |
| 147 | FF(b,c,d,a,W[11],22,0x895cd7beUL) |
| 148 | FF(a,b,c,d,W[12],7,0x6b901122UL) |
| 149 | FF(d,a,b,c,W[13],12,0xfd987193UL) |
| 150 | FF(c,d,a,b,W[14],17,0xa679438eUL) |
| 151 | FF(b,c,d,a,W[15],22,0x49b40821UL) |
| 152 | GG(a,b,c,d,W[1],5,0xf61e2562UL) |
| 153 | GG(d,a,b,c,W[6],9,0xc040b340UL) |
| 154 | GG(c,d,a,b,W[11],14,0x265e5a51UL) |
| 155 | GG(b,c,d,a,W[0],20,0xe9b6c7aaUL) |
| 156 | GG(a,b,c,d,W[5],5,0xd62f105dUL) |
| 157 | GG(d,a,b,c,W[10],9,0x02441453UL) |
| 158 | GG(c,d,a,b,W[15],14,0xd8a1e681UL) |
| 159 | GG(b,c,d,a,W[4],20,0xe7d3fbc8UL) |
| 160 | GG(a,b,c,d,W[9],5,0x21e1cde6UL) |
| 161 | GG(d,a,b,c,W[14],9,0xc33707d6UL) |
| 162 | GG(c,d,a,b,W[3],14,0xf4d50d87UL) |
| 163 | GG(b,c,d,a,W[8],20,0x455a14edUL) |
| 164 | GG(a,b,c,d,W[13],5,0xa9e3e905UL) |
| 165 | GG(d,a,b,c,W[2],9,0xfcefa3f8UL) |
| 166 | GG(c,d,a,b,W[7],14,0x676f02d9UL) |
| 167 | GG(b,c,d,a,W[12],20,0x8d2a4c8aUL) |
| 168 | HH(a,b,c,d,W[5],4,0xfffa3942UL) |
| 169 | HH(d,a,b,c,W[8],11,0x8771f681UL) |
| 170 | HH(c,d,a,b,W[11],16,0x6d9d6122UL) |
| 171 | HH(b,c,d,a,W[14],23,0xfde5380cUL) |
| 172 | HH(a,b,c,d,W[1],4,0xa4beea44UL) |
| 173 | HH(d,a,b,c,W[4],11,0x4bdecfa9UL) |
| 174 | HH(c,d,a,b,W[7],16,0xf6bb4b60UL) |
| 175 | HH(b,c,d,a,W[10],23,0xbebfbc70UL) |
| 176 | HH(a,b,c,d,W[13],4,0x289b7ec6UL) |
| 177 | HH(d,a,b,c,W[0],11,0xeaa127faUL) |
| 178 | HH(c,d,a,b,W[3],16,0xd4ef3085UL) |
| 179 | HH(b,c,d,a,W[6],23,0x04881d05UL) |
| 180 | HH(a,b,c,d,W[9],4,0xd9d4d039UL) |
| 181 | HH(d,a,b,c,W[12],11,0xe6db99e5UL) |
| 182 | HH(c,d,a,b,W[15],16,0x1fa27cf8UL) |
| 183 | HH(b,c,d,a,W[2],23,0xc4ac5665UL) |
| 184 | II(a,b,c,d,W[0],6,0xf4292244UL) |
| 185 | II(d,a,b,c,W[7],10,0x432aff97UL) |
| 186 | II(c,d,a,b,W[14],15,0xab9423a7UL) |
| 187 | II(b,c,d,a,W[5],21,0xfc93a039UL) |
| 188 | II(a,b,c,d,W[12],6,0x655b59c3UL) |
| 189 | II(d,a,b,c,W[3],10,0x8f0ccc92UL) |
| 190 | II(c,d,a,b,W[10],15,0xffeff47dUL) |
| 191 | II(b,c,d,a,W[1],21,0x85845dd1UL) |
| 192 | II(a,b,c,d,W[8],6,0x6fa87e4fUL) |
| 193 | II(d,a,b,c,W[15],10,0xfe2ce6e0UL) |
| 194 | II(c,d,a,b,W[6],15,0xa3014314UL) |
| 195 | II(b,c,d,a,W[13],21,0x4e0811a1UL) |
| 196 | II(a,b,c,d,W[4],6,0xf7537e82UL) |
| 197 | II(d,a,b,c,W[11],10,0xbd3af235UL) |
| 198 | II(c,d,a,b,W[2],15,0x2ad7d2bbUL) |
| 199 | II(b,c,d,a,W[9],21,0xeb86d391UL) |
| 200 | |
| 201 | md5->state[0] = md5->state[0] + a; |
| 202 | md5->state[1] = md5->state[1] + b; |
| 203 | md5->state[2] = md5->state[2] + c; |
| 204 | md5->state[3] = md5->state[3] + d; |
| 205 | } |
| 206 | |
| 207 | |
| 208 | /** |
| 209 | Initialize the hash state |
| 210 | @param sha1 The hash state you wish to initialize |
| 211 | */ |
| 212 | void md5_init(struct md5_state *md5) |
| 213 | { |
| 214 | assert(md5 != NULL); |
| 215 | md5->state[0] = 0x67452301UL; |
| 216 | md5->state[1] = 0xefcdab89UL; |
| 217 | md5->state[2] = 0x98badcfeUL; |
| 218 | md5->state[3] = 0x10325476UL; |
| 219 | md5->curlen = 0; |
| 220 | md5->length = 0; |
| 221 | } |
| 222 | |
| 223 | /** |
| 224 | Process a block of memory though the hash |
| 225 | @param sha1 The hash state |
| 226 | @param in The data to hash |
| 227 | @param inlen The length of the data (octets) |
| 228 | */ |
| 229 | void md5_process(struct md5_state *md5, |
| 230 | const unsigned char *in, unsigned long inlen) |
| 231 | { |
| 232 | unsigned long n; |
| 233 | |
| 234 | assert(md5 != NULL); |
| 235 | assert(in != NULL); |
| 236 | assert(md5->curlen <= sizeof(md5->buf)); |
| 237 | |
| 238 | while (inlen > 0) { |
| 239 | if (md5->curlen == 0 && inlen >= MD5_BLOCKSIZE) { |
| 240 | md5_compress(md5, (unsigned char *)in); |
| 241 | md5->length += MD5_BLOCKSIZE * 8; |
| 242 | in += MD5_BLOCKSIZE; |
| 243 | inlen -= MD5_BLOCKSIZE; |
| 244 | } else { |
| 245 | n = MIN(inlen, (MD5_BLOCKSIZE - md5->curlen)); |
| 246 | memcpy(md5->buf + md5->curlen, in, (size_t)n); |
| 247 | md5->curlen += n; |
| 248 | in += n; |
| 249 | inlen -= n; |
| 250 | if (md5->curlen == MD5_BLOCKSIZE) { |
| 251 | md5_compress(md5, md5->buf); |
| 252 | md5->length += 8*MD5_BLOCKSIZE; |
| 253 | md5->curlen = 0; |
| 254 | } |
| 255 | } |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | /** |
| 260 | Terminate the hash to get the digest |
| 261 | @param sha1 The hash state |
| 262 | @param out [out] The destination of the hash (16 bytes) |
| 263 | */ |
| 264 | void md5_done(struct md5_state *md5, unsigned char *out) |
| 265 | { |
| 266 | int i; |
| 267 | |
| 268 | assert(md5 != NULL); |
| 269 | assert(out != NULL); |
| 270 | assert(md5->curlen < sizeof(md5->buf)); |
| 271 | |
| 272 | /* increase the length of the message */ |
| 273 | md5->length += md5->curlen * 8; |
| 274 | |
| 275 | /* append the '1' bit */ |
| 276 | md5->buf[md5->curlen++] = (unsigned char)0x80; |
| 277 | |
| 278 | /* if the length is currently above 56 bytes we append zeros |
| 279 | * then compress. Then we can fall back to padding zeros and length |
| 280 | * encoding like normal. |
| 281 | */ |
| 282 | if (md5->curlen > 56) { |
| 283 | while (md5->curlen < 64) { |
| 284 | md5->buf[md5->curlen++] = (unsigned char)0; |
| 285 | } |
| 286 | md5_compress(md5, md5->buf); |
| 287 | md5->curlen = 0; |
| 288 | } |
| 289 | |
| 290 | /* pad upto 56 bytes of zeroes */ |
| 291 | while (md5->curlen < 56) { |
| 292 | md5->buf[md5->curlen++] = (unsigned char)0; |
| 293 | } |
| 294 | |
| 295 | /* store length */ |
| 296 | STORE64L(md5->length, md5->buf+56); |
| 297 | md5_compress(md5, md5->buf); |
| 298 | |
| 299 | /* copy output */ |
| 300 | for (i = 0; i < 4; i++) { |
| 301 | STORE32L(md5->state[i], out+(4*i)); |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | /* .Source: /cvs/libtom/libtomcrypt/src/hashes/md5.c,v $ */ |
| 306 | /* .Revision: 1.10 $ */ |
| 307 | /* .Date: 2007/05/12 14:25:28 $ */ |
| 308 | |
| 309 | /* |
| 310 | * End of copied MD5 code. |
| 311 | * |
| 312 | * ------------------------------------------------------------------------ |
| 313 | */ |
| 314 | |
| 315 | static PyTypeObject MD5type; |
| 316 | |
| 317 | |
| 318 | static MD5object * |
| 319 | newMD5object(void) |
| 320 | { |
| 321 | return (MD5object *)PyObject_New(MD5object, &MD5type); |
| 322 | } |
| 323 | |
| 324 | |
| 325 | /* Internal methods for a hash object */ |
| 326 | |
| 327 | static void |
| 328 | MD5_dealloc(PyObject *ptr) |
| 329 | { |
| 330 | PyObject_Del(ptr); |
| 331 | } |
| 332 | |
| 333 | |
| 334 | /* External methods for a hash object */ |
| 335 | |
| 336 | PyDoc_STRVAR(MD5_copy__doc__, "Return a copy of the hash object."); |
| 337 | |
| 338 | static PyObject * |
| 339 | MD5_copy(MD5object *self, PyObject *unused) |
| 340 | { |
| 341 | MD5object *newobj; |
| 342 | |
Christian Heimes | 90aa764 | 2007-12-19 02:45:37 +0000 | [diff] [blame] | 343 | if (Py_TYPE(self) == &MD5type) { |
Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 344 | if ( (newobj = newMD5object())==NULL) |
| 345 | return NULL; |
| 346 | } else { |
| 347 | if ( (newobj = newMD5object())==NULL) |
| 348 | return NULL; |
| 349 | } |
| 350 | |
| 351 | newobj->hash_state = self->hash_state; |
| 352 | return (PyObject *)newobj; |
| 353 | } |
| 354 | |
| 355 | PyDoc_STRVAR(MD5_digest__doc__, |
| 356 | "Return the digest value as a string of binary data."); |
| 357 | |
| 358 | static PyObject * |
| 359 | MD5_digest(MD5object *self, PyObject *unused) |
| 360 | { |
| 361 | unsigned char digest[MD5_DIGESTSIZE]; |
| 362 | struct md5_state temp; |
| 363 | |
| 364 | temp = self->hash_state; |
| 365 | md5_done(&temp, digest); |
Christian Heimes | 72b710a | 2008-05-26 13:28:38 +0000 | [diff] [blame] | 366 | return PyBytes_FromStringAndSize((const char *)digest, MD5_DIGESTSIZE); |
Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 367 | } |
| 368 | |
| 369 | PyDoc_STRVAR(MD5_hexdigest__doc__, |
| 370 | "Return the digest value as a string of hexadecimal digits."); |
| 371 | |
| 372 | static PyObject * |
| 373 | MD5_hexdigest(MD5object *self, PyObject *unused) |
| 374 | { |
| 375 | unsigned char digest[MD5_DIGESTSIZE]; |
| 376 | struct md5_state temp; |
| 377 | PyObject *retval; |
| 378 | Py_UNICODE *hex_digest; |
| 379 | int i, j; |
| 380 | |
| 381 | /* Get the raw (binary) digest value */ |
| 382 | temp = self->hash_state; |
| 383 | md5_done(&temp, digest); |
| 384 | |
| 385 | /* Create a new string */ |
| 386 | retval = PyUnicode_FromStringAndSize(NULL, MD5_DIGESTSIZE * 2); |
| 387 | if (!retval) |
| 388 | return NULL; |
| 389 | hex_digest = PyUnicode_AS_UNICODE(retval); |
| 390 | if (!hex_digest) { |
| 391 | Py_DECREF(retval); |
| 392 | return NULL; |
| 393 | } |
| 394 | |
| 395 | /* Make hex version of the digest */ |
| 396 | for(i=j=0; i<MD5_DIGESTSIZE; i++) { |
| 397 | char c; |
| 398 | c = (digest[i] >> 4) & 0xf; |
| 399 | c = (c>9) ? c+'a'-10 : c + '0'; |
| 400 | hex_digest[j++] = c; |
| 401 | c = (digest[i] & 0xf); |
| 402 | c = (c>9) ? c+'a'-10 : c + '0'; |
| 403 | hex_digest[j++] = c; |
| 404 | } |
| 405 | return retval; |
| 406 | } |
| 407 | |
| 408 | PyDoc_STRVAR(MD5_update__doc__, |
| 409 | "Update this hash object's state with the provided string."); |
| 410 | |
| 411 | static PyObject * |
| 412 | MD5_update(MD5object *self, PyObject *args) |
| 413 | { |
Martin v. Löwis | 7b9cb25 | 2008-08-14 15:52:23 +0000 | [diff] [blame] | 414 | Py_buffer buf; |
| 415 | |
| 416 | if (!PyArg_ParseTuple(args, "s*:update", &buf)) |
Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 417 | return NULL; |
| 418 | |
Martin v. Löwis | 7b9cb25 | 2008-08-14 15:52:23 +0000 | [diff] [blame] | 419 | md5_process(&self->hash_state, buf.buf, buf.len); |
Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 420 | |
Martin v. Löwis | 7b9cb25 | 2008-08-14 15:52:23 +0000 | [diff] [blame] | 421 | PyBuffer_Release(&buf); |
Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 422 | Py_INCREF(Py_None); |
| 423 | return Py_None; |
| 424 | } |
| 425 | |
| 426 | static PyMethodDef MD5_methods[] = { |
| 427 | {"copy", (PyCFunction)MD5_copy, METH_NOARGS, MD5_copy__doc__}, |
| 428 | {"digest", (PyCFunction)MD5_digest, METH_NOARGS, MD5_digest__doc__}, |
| 429 | {"hexdigest", (PyCFunction)MD5_hexdigest, METH_NOARGS, MD5_hexdigest__doc__}, |
| 430 | {"update", (PyCFunction)MD5_update, METH_VARARGS, MD5_update__doc__}, |
| 431 | {NULL, NULL} /* sentinel */ |
| 432 | }; |
| 433 | |
| 434 | static PyObject * |
| 435 | MD5_get_block_size(PyObject *self, void *closure) |
| 436 | { |
Christian Heimes | 217cfd1 | 2007-12-02 14:31:20 +0000 | [diff] [blame] | 437 | return PyLong_FromLong(MD5_BLOCKSIZE); |
Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 438 | } |
| 439 | |
| 440 | static PyObject * |
| 441 | MD5_get_name(PyObject *self, void *closure) |
| 442 | { |
| 443 | return PyUnicode_FromStringAndSize("MD5", 3); |
| 444 | } |
| 445 | |
| 446 | static PyObject * |
| 447 | md5_get_digest_size(PyObject *self, void *closure) |
| 448 | { |
Christian Heimes | 217cfd1 | 2007-12-02 14:31:20 +0000 | [diff] [blame] | 449 | return PyLong_FromLong(MD5_DIGESTSIZE); |
Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 450 | } |
| 451 | |
| 452 | |
| 453 | static PyGetSetDef MD5_getseters[] = { |
| 454 | {"block_size", |
| 455 | (getter)MD5_get_block_size, NULL, |
| 456 | NULL, |
| 457 | NULL}, |
| 458 | {"name", |
| 459 | (getter)MD5_get_name, NULL, |
| 460 | NULL, |
| 461 | NULL}, |
| 462 | {"digest_size", |
| 463 | (getter)md5_get_digest_size, NULL, |
| 464 | NULL, |
| 465 | NULL}, |
| 466 | {NULL} /* Sentinel */ |
| 467 | }; |
| 468 | |
| 469 | static PyTypeObject MD5type = { |
| 470 | PyVarObject_HEAD_INIT(NULL, 0) |
| 471 | "_md5.md5", /*tp_name*/ |
| 472 | sizeof(MD5object), /*tp_size*/ |
| 473 | 0, /*tp_itemsize*/ |
| 474 | /* methods */ |
| 475 | MD5_dealloc, /*tp_dealloc*/ |
| 476 | 0, /*tp_print*/ |
| 477 | 0, /*tp_getattr*/ |
| 478 | 0, /*tp_setattr*/ |
| 479 | 0, /*tp_compare*/ |
| 480 | 0, /*tp_repr*/ |
| 481 | 0, /*tp_as_number*/ |
| 482 | 0, /*tp_as_sequence*/ |
| 483 | 0, /*tp_as_mapping*/ |
| 484 | 0, /*tp_hash*/ |
| 485 | 0, /*tp_call*/ |
| 486 | 0, /*tp_str*/ |
| 487 | 0, /*tp_getattro*/ |
| 488 | 0, /*tp_setattro*/ |
| 489 | 0, /*tp_as_buffer*/ |
| 490 | Py_TPFLAGS_DEFAULT, /*tp_flags*/ |
| 491 | 0, /*tp_doc*/ |
| 492 | 0, /*tp_traverse*/ |
| 493 | 0, /*tp_clear*/ |
| 494 | 0, /*tp_richcompare*/ |
| 495 | 0, /*tp_weaklistoffset*/ |
| 496 | 0, /*tp_iter*/ |
| 497 | 0, /*tp_iternext*/ |
| 498 | MD5_methods, /* tp_methods */ |
| 499 | NULL, /* tp_members */ |
| 500 | MD5_getseters, /* tp_getset */ |
| 501 | }; |
| 502 | |
| 503 | |
| 504 | /* The single module-level function: new() */ |
| 505 | |
| 506 | PyDoc_STRVAR(MD5_new__doc__, |
| 507 | "Return a new MD5 hash object; optionally initialized with a string."); |
| 508 | |
| 509 | static PyObject * |
| 510 | MD5_new(PyObject *self, PyObject *args, PyObject *kwdict) |
| 511 | { |
| 512 | static char *kwlist[] = {"string", NULL}; |
| 513 | MD5object *new; |
Martin v. Löwis | 7b9cb25 | 2008-08-14 15:52:23 +0000 | [diff] [blame] | 514 | Py_buffer buf; |
| 515 | buf.buf = NULL; |
Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 516 | |
Martin v. Löwis | 7b9cb25 | 2008-08-14 15:52:23 +0000 | [diff] [blame] | 517 | if (!PyArg_ParseTupleAndKeywords(args, kwdict, "|s*:new", kwlist, |
| 518 | &buf)) { |
Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 519 | return NULL; |
| 520 | } |
| 521 | |
| 522 | if ((new = newMD5object()) == NULL) |
| 523 | return NULL; |
| 524 | |
| 525 | md5_init(&new->hash_state); |
| 526 | |
| 527 | if (PyErr_Occurred()) { |
| 528 | Py_DECREF(new); |
| 529 | return NULL; |
| 530 | } |
Martin v. Löwis | 7b9cb25 | 2008-08-14 15:52:23 +0000 | [diff] [blame] | 531 | if (buf.buf) { |
| 532 | md5_process(&new->hash_state, buf.buf, buf.len); |
| 533 | PyBuffer_Release(&buf); |
| 534 | } |
Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 535 | |
| 536 | return (PyObject *)new; |
| 537 | } |
| 538 | |
| 539 | |
| 540 | /* List of functions exported by this module */ |
| 541 | |
| 542 | static struct PyMethodDef MD5_functions[] = { |
| 543 | {"md5", (PyCFunction)MD5_new, METH_VARARGS|METH_KEYWORDS, MD5_new__doc__}, |
| 544 | {NULL, NULL} /* Sentinel */ |
| 545 | }; |
| 546 | |
| 547 | |
| 548 | /* Initialize this module. */ |
| 549 | |
| 550 | #define insint(n,v) { PyModule_AddIntConstant(m,n,v); } |
| 551 | |
Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 552 | |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 553 | static struct PyModuleDef _md5module = { |
| 554 | PyModuleDef_HEAD_INIT, |
| 555 | "_md5", |
| 556 | NULL, |
| 557 | -1, |
| 558 | MD5_functions, |
| 559 | NULL, |
| 560 | NULL, |
| 561 | NULL, |
| 562 | NULL |
| 563 | }; |
| 564 | |
| 565 | PyMODINIT_FUNC |
| 566 | PyInit__md5(void) |
| 567 | { |
Christian Heimes | 90aa764 | 2007-12-19 02:45:37 +0000 | [diff] [blame] | 568 | Py_TYPE(&MD5type) = &PyType_Type; |
Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 569 | if (PyType_Ready(&MD5type) < 0) |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 570 | return NULL; |
Martin v. Löwis | 3447bee | 2008-06-11 05:37:58 +0000 | [diff] [blame] | 571 | return PyModule_Create(&_md5module); |
Gregory P. Smith | 2f21eb3 | 2007-09-09 06:44:34 +0000 | [diff] [blame] | 572 | } |