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 ([email protected]) |
9 | Greg Stein ([email protected]) |
10 | Trevor Perrin ([email protected]) |
11 | |
12 | Copyright (C) 2005-2007 Gregory P. Smith ([email protected]) |
13 | Licensed to PSF under a Contributor Agreement. |
14 | |
15 | */ |
16 | |
17 | /* MD5 objects */ |
18 | |
19 | #include "Python.h" |
20 | #include "hashlib.h" |
21 | #include "pystrhex.h" |
22 | |
23 | /*[clinic input] |
24 | module _md5 |
25 | class MD5Type "MD5object *" "&PyType_Type" |
26 | [clinic start generated code]*/ |
27 | /*[clinic end generated code: output=da39a3ee5e6b4b0d input=6e5261719957a912]*/ |
28 | |
29 | /* Some useful types */ |
30 | |
31 | #if SIZEOF_INT == 4 |
32 | typedef unsigned int MD5_INT32; /* 32-bit integer */ |
33 | typedef long long MD5_INT64; /* 64-bit integer */ |
34 | #else |
35 | /* not defined. compilation will die. */ |
36 | #endif |
37 | |
38 | /* The MD5 block size and message digest sizes, in bytes */ |
39 | |
40 | #define MD5_BLOCKSIZE 64 |
41 | #define MD5_DIGESTSIZE 16 |
42 | |
43 | /* The structure for storing MD5 info */ |
44 | |
45 | struct md5_state { |
46 | MD5_INT64 length; |
47 | MD5_INT32 state[4], curlen; |
48 | unsigned char buf[MD5_BLOCKSIZE]; |
49 | }; |
50 | |
51 | typedef struct { |
52 | PyObject_HEAD |
53 | |
54 | struct md5_state hash_state; |
55 | } MD5object; |
56 | |
57 | #include "clinic/md5module.c.h" |
58 | |
59 | /* ------------------------------------------------------------------------ |
60 | * |
61 | * This code for the MD5 algorithm was noted as public domain. The |
62 | * original headers are pasted below. |
63 | * |
64 | * Several changes have been made to make it more compatible with the |
65 | * Python environment and desired interface. |
66 | * |
67 | */ |
68 | |
69 | /* LibTomCrypt, modular cryptographic library -- Tom St Denis |
70 | * |
71 | * LibTomCrypt is a library that provides various cryptographic |
72 | * algorithms in a highly modular and flexible manner. |
73 | * |
74 | * The library is free for all purposes without any express |
75 | * guarantee it works. |
76 | * |
77 | * Tom St Denis, [email protected], https://www.libtom.net |
78 | */ |
79 | |
80 | /* rotate the hard way (platform optimizations could be done) */ |
81 | #define ROLc(x, y) ( (((unsigned long)(x)<<(unsigned long)((y)&31)) | (((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL) |
82 | |
83 | /* Endian Neutral macros that work on all platforms */ |
84 | |
85 | #define STORE32L(x, y) \ |
86 | { (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \ |
87 | (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); } |
88 | |
89 | #define LOAD32L(x, y) \ |
90 | { x = ((unsigned long)((y)[3] & 255)<<24) | \ |
91 | ((unsigned long)((y)[2] & 255)<<16) | \ |
92 | ((unsigned long)((y)[1] & 255)<<8) | \ |
93 | ((unsigned long)((y)[0] & 255)); } |
94 | |
95 | #define STORE64L(x, y) \ |
96 | { (y)[7] = (unsigned char)(((x)>>56)&255); (y)[6] = (unsigned char)(((x)>>48)&255); \ |
97 | (y)[5] = (unsigned char)(((x)>>40)&255); (y)[4] = (unsigned char)(((x)>>32)&255); \ |
98 | (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \ |
99 | (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); } |
100 | |
101 | |
102 | /* MD5 macros */ |
103 | |
104 | #define F(x,y,z) (z ^ (x & (y ^ z))) |
105 | #define G(x,y,z) (y ^ (z & (y ^ x))) |
106 | #define H(x,y,z) (x^y^z) |
107 | #define I(x,y,z) (y^(x|(~z))) |
108 | |
109 | #define FF(a,b,c,d,M,s,t) \ |
110 | a = (a + F(b,c,d) + M + t); a = ROLc(a, s) + b; |
111 | |
112 | #define GG(a,b,c,d,M,s,t) \ |
113 | a = (a + G(b,c,d) + M + t); a = ROLc(a, s) + b; |
114 | |
115 | #define HH(a,b,c,d,M,s,t) \ |
116 | a = (a + H(b,c,d) + M + t); a = ROLc(a, s) + b; |
117 | |
118 | #define II(a,b,c,d,M,s,t) \ |
119 | a = (a + I(b,c,d) + M + t); a = ROLc(a, s) + b; |
120 | |
121 | |
122 | static void md5_compress(struct md5_state *md5, const unsigned char *buf) |
123 | { |
124 | MD5_INT32 i, W[16], a, b, c, d; |
125 | |
126 | assert(md5 != NULL); |
127 | assert(buf != NULL); |
128 | |
129 | /* copy the state into 512-bits into W[0..15] */ |
130 | for (i = 0; i < 16; i++) { |
131 | LOAD32L(W[i], buf + (4*i)); |
132 | } |
133 | |
134 | /* copy state */ |
135 | a = md5->state[0]; |
136 | b = md5->state[1]; |
137 | c = md5->state[2]; |
138 | d = md5->state[3]; |
139 | |
140 | FF(a,b,c,d,W[0],7,0xd76aa478UL) |
141 | FF(d,a,b,c,W[1],12,0xe8c7b756UL) |
142 | FF(c,d,a,b,W[2],17,0x242070dbUL) |
143 | FF(b,c,d,a,W[3],22,0xc1bdceeeUL) |
144 | FF(a,b,c,d,W[4],7,0xf57c0fafUL) |
145 | FF(d,a,b,c,W[5],12,0x4787c62aUL) |
146 | FF(c,d,a,b,W[6],17,0xa8304613UL) |
147 | FF(b,c,d,a,W[7],22,0xfd469501UL) |
148 | FF(a,b,c,d,W[8],7,0x698098d8UL) |
149 | FF(d,a,b,c,W[9],12,0x8b44f7afUL) |
150 | FF(c,d,a,b,W[10],17,0xffff5bb1UL) |
151 | FF(b,c,d,a,W[11],22,0x895cd7beUL) |
152 | FF(a,b,c,d,W[12],7,0x6b901122UL) |
153 | FF(d,a,b,c,W[13],12,0xfd987193UL) |
154 | FF(c,d,a,b,W[14],17,0xa679438eUL) |
155 | FF(b,c,d,a,W[15],22,0x49b40821UL) |
156 | GG(a,b,c,d,W[1],5,0xf61e2562UL) |
157 | GG(d,a,b,c,W[6],9,0xc040b340UL) |
158 | GG(c,d,a,b,W[11],14,0x265e5a51UL) |
159 | GG(b,c,d,a,W[0],20,0xe9b6c7aaUL) |
160 | GG(a,b,c,d,W[5],5,0xd62f105dUL) |
161 | GG(d,a,b,c,W[10],9,0x02441453UL) |
162 | GG(c,d,a,b,W[15],14,0xd8a1e681UL) |
163 | GG(b,c,d,a,W[4],20,0xe7d3fbc8UL) |
164 | GG(a,b,c,d,W[9],5,0x21e1cde6UL) |
165 | GG(d,a,b,c,W[14],9,0xc33707d6UL) |
166 | GG(c,d,a,b,W[3],14,0xf4d50d87UL) |
167 | GG(b,c,d,a,W[8],20,0x455a14edUL) |
168 | GG(a,b,c,d,W[13],5,0xa9e3e905UL) |
169 | GG(d,a,b,c,W[2],9,0xfcefa3f8UL) |
170 | GG(c,d,a,b,W[7],14,0x676f02d9UL) |
171 | GG(b,c,d,a,W[12],20,0x8d2a4c8aUL) |
172 | HH(a,b,c,d,W[5],4,0xfffa3942UL) |
173 | HH(d,a,b,c,W[8],11,0x8771f681UL) |
174 | HH(c,d,a,b,W[11],16,0x6d9d6122UL) |
175 | HH(b,c,d,a,W[14],23,0xfde5380cUL) |
176 | HH(a,b,c,d,W[1],4,0xa4beea44UL) |
177 | HH(d,a,b,c,W[4],11,0x4bdecfa9UL) |
178 | HH(c,d,a,b,W[7],16,0xf6bb4b60UL) |
179 | HH(b,c,d,a,W[10],23,0xbebfbc70UL) |
180 | HH(a,b,c,d,W[13],4,0x289b7ec6UL) |
181 | HH(d,a,b,c,W[0],11,0xeaa127faUL) |
182 | HH(c,d,a,b,W[3],16,0xd4ef3085UL) |
183 | HH(b,c,d,a,W[6],23,0x04881d05UL) |
184 | HH(a,b,c,d,W[9],4,0xd9d4d039UL) |
185 | HH(d,a,b,c,W[12],11,0xe6db99e5UL) |
186 | HH(c,d,a,b,W[15],16,0x1fa27cf8UL) |
187 | HH(b,c,d,a,W[2],23,0xc4ac5665UL) |
188 | II(a,b,c,d,W[0],6,0xf4292244UL) |
189 | II(d,a,b,c,W[7],10,0x432aff97UL) |
190 | II(c,d,a,b,W[14],15,0xab9423a7UL) |
191 | II(b,c,d,a,W[5],21,0xfc93a039UL) |
192 | II(a,b,c,d,W[12],6,0x655b59c3UL) |
193 | II(d,a,b,c,W[3],10,0x8f0ccc92UL) |
194 | II(c,d,a,b,W[10],15,0xffeff47dUL) |
195 | II(b,c,d,a,W[1],21,0x85845dd1UL) |
196 | II(a,b,c,d,W[8],6,0x6fa87e4fUL) |
197 | II(d,a,b,c,W[15],10,0xfe2ce6e0UL) |
198 | II(c,d,a,b,W[6],15,0xa3014314UL) |
199 | II(b,c,d,a,W[13],21,0x4e0811a1UL) |
200 | II(a,b,c,d,W[4],6,0xf7537e82UL) |
201 | II(d,a,b,c,W[11],10,0xbd3af235UL) |
202 | II(c,d,a,b,W[2],15,0x2ad7d2bbUL) |
203 | II(b,c,d,a,W[9],21,0xeb86d391UL) |
204 | |
205 | md5->state[0] = md5->state[0] + a; |
206 | md5->state[1] = md5->state[1] + b; |
207 | md5->state[2] = md5->state[2] + c; |
208 | md5->state[3] = md5->state[3] + d; |
209 | } |
210 | |
211 | |
212 | /** |
213 | Initialize the hash state |
214 | @param md5 The hash state you wish to initialize |
215 | */ |
216 | static void |
217 | md5_init(struct md5_state *md5) |
218 | { |
219 | assert(md5 != NULL); |
220 | md5->state[0] = 0x67452301UL; |
221 | md5->state[1] = 0xefcdab89UL; |
222 | md5->state[2] = 0x98badcfeUL; |
223 | md5->state[3] = 0x10325476UL; |
224 | md5->curlen = 0; |
225 | md5->length = 0; |
226 | } |
227 | |
228 | /** |
229 | Process a block of memory though the hash |
230 | @param md5 The hash state |
231 | @param in The data to hash |
232 | @param inlen The length of the data (octets) |
233 | */ |
234 | static void |
235 | md5_process(struct md5_state *md5, const unsigned char *in, Py_ssize_t inlen) |
236 | { |
237 | Py_ssize_t n; |
238 | |
239 | assert(md5 != NULL); |
240 | assert(in != NULL); |
241 | assert(md5->curlen <= sizeof(md5->buf)); |
242 | |
243 | while (inlen > 0) { |
244 | if (md5->curlen == 0 && inlen >= MD5_BLOCKSIZE) { |
245 | md5_compress(md5, in); |
246 | md5->length += MD5_BLOCKSIZE * 8; |
247 | in += MD5_BLOCKSIZE; |
248 | inlen -= MD5_BLOCKSIZE; |
249 | } else { |
250 | n = Py_MIN(inlen, (Py_ssize_t)(MD5_BLOCKSIZE - md5->curlen)); |
251 | memcpy(md5->buf + md5->curlen, in, (size_t)n); |
252 | md5->curlen += (MD5_INT32)n; |
253 | in += n; |
254 | inlen -= n; |
255 | if (md5->curlen == MD5_BLOCKSIZE) { |
256 | md5_compress(md5, md5->buf); |
257 | md5->length += 8*MD5_BLOCKSIZE; |
258 | md5->curlen = 0; |
259 | } |
260 | } |
261 | } |
262 | } |
263 | |
264 | /** |
265 | Terminate the hash to get the digest |
266 | @param md5 The hash state |
267 | @param out [out] The destination of the hash (16 bytes) |
268 | */ |
269 | static void |
270 | md5_done(struct md5_state *md5, unsigned char *out) |
271 | { |
272 | int i; |
273 | |
274 | assert(md5 != NULL); |
275 | assert(out != NULL); |
276 | assert(md5->curlen < sizeof(md5->buf)); |
277 | |
278 | /* increase the length of the message */ |
279 | md5->length += md5->curlen * 8; |
280 | |
281 | /* append the '1' bit */ |
282 | md5->buf[md5->curlen++] = (unsigned char)0x80; |
283 | |
284 | /* if the length is currently above 56 bytes we append zeros |
285 | * then compress. Then we can fall back to padding zeros and length |
286 | * encoding like normal. |
287 | */ |
288 | if (md5->curlen > 56) { |
289 | while (md5->curlen < 64) { |
290 | md5->buf[md5->curlen++] = (unsigned char)0; |
291 | } |
292 | md5_compress(md5, md5->buf); |
293 | md5->curlen = 0; |
294 | } |
295 | |
296 | /* pad up to 56 bytes of zeroes */ |
297 | while (md5->curlen < 56) { |
298 | md5->buf[md5->curlen++] = (unsigned char)0; |
299 | } |
300 | |
301 | /* store length */ |
302 | STORE64L(md5->length, md5->buf+56); |
303 | md5_compress(md5, md5->buf); |
304 | |
305 | /* copy output */ |
306 | for (i = 0; i < 4; i++) { |
307 | STORE32L(md5->state[i], out+(4*i)); |
308 | } |
309 | } |
310 | |
311 | /* .Source: /cvs/libtom/libtomcrypt/src/hashes/md5.c,v $ */ |
312 | /* .Revision: 1.10 $ */ |
313 | /* .Date: 2007/05/12 14:25:28 $ */ |
314 | |
315 | /* |
316 | * End of copied MD5 code. |
317 | * |
318 | * ------------------------------------------------------------------------ |
319 | */ |
320 | |
321 | typedef struct { |
322 | PyTypeObject* md5_type; |
323 | } MD5State; |
324 | |
325 | static inline MD5State* |
326 | md5_get_state(PyObject *module) |
327 | { |
328 | void *state = PyModule_GetState(module); |
329 | assert(state != NULL); |
330 | return (MD5State *)state; |
331 | } |
332 | |
333 | static MD5object * |
334 | newMD5object(MD5State * st) |
335 | { |
336 | MD5object *md5 = (MD5object *)PyObject_GC_New(MD5object, st->md5_type); |
337 | PyObject_GC_Track(md5); |
338 | return md5; |
339 | } |
340 | |
341 | /* Internal methods for a hash object */ |
342 | static int |
343 | MD5_traverse(PyObject *ptr, visitproc visit, void *arg) |
344 | { |
345 | Py_VISIT(Py_TYPE(ptr)); |
346 | return 0; |
347 | } |
348 | |
349 | static void |
350 | MD5_dealloc(PyObject *ptr) |
351 | { |
352 | PyTypeObject *tp = Py_TYPE(ptr); |
353 | PyObject_GC_UnTrack(ptr); |
354 | PyObject_GC_Del(ptr); |
355 | Py_DECREF(tp); |
356 | } |
357 | |
358 | |
359 | /* External methods for a hash object */ |
360 | |
361 | /*[clinic input] |
362 | MD5Type.copy |
363 | |
364 | cls: defining_class |
365 | |
366 | Return a copy of the hash object. |
367 | [clinic start generated code]*/ |
368 | |
369 | static PyObject * |
370 | MD5Type_copy_impl(MD5object *self, PyTypeObject *cls) |
371 | /*[clinic end generated code: output=bf055e08244bf5ee input=d89087dcfb2a8620]*/ |
372 | { |
373 | MD5State *st = PyType_GetModuleState(cls); |
374 | |
375 | MD5object *newobj; |
376 | if ((newobj = newMD5object(st))==NULL) |
377 | return NULL; |
378 | |
379 | newobj->hash_state = self->hash_state; |
380 | return (PyObject *)newobj; |
381 | } |
382 | |
383 | /*[clinic input] |
384 | MD5Type.digest |
385 | |
386 | Return the digest value as a bytes object. |
387 | [clinic start generated code]*/ |
388 | |
389 | static PyObject * |
390 | MD5Type_digest_impl(MD5object *self) |
391 | /*[clinic end generated code: output=eb691dc4190a07ec input=bc0c4397c2994be6]*/ |
392 | { |
393 | unsigned char digest[MD5_DIGESTSIZE]; |
394 | struct md5_state temp; |
395 | |
396 | temp = self->hash_state; |
397 | md5_done(&temp, digest); |
398 | return PyBytes_FromStringAndSize((const char *)digest, MD5_DIGESTSIZE); |
399 | } |
400 | |
401 | /*[clinic input] |
402 | MD5Type.hexdigest |
403 | |
404 | Return the digest value as a string of hexadecimal digits. |
405 | [clinic start generated code]*/ |
406 | |
407 | static PyObject * |
408 | MD5Type_hexdigest_impl(MD5object *self) |
409 | /*[clinic end generated code: output=17badced1f3ac932 input=b60b19de644798dd]*/ |
410 | { |
411 | unsigned char digest[MD5_DIGESTSIZE]; |
412 | struct md5_state temp; |
413 | |
414 | /* Get the raw (binary) digest value */ |
415 | temp = self->hash_state; |
416 | md5_done(&temp, digest); |
417 | |
418 | return _Py_strhex((const char*)digest, MD5_DIGESTSIZE); |
419 | } |
420 | |
421 | /*[clinic input] |
422 | MD5Type.update |
423 | |
424 | obj: object |
425 | / |
426 | |
427 | Update this hash object's state with the provided string. |
428 | [clinic start generated code]*/ |
429 | |
430 | static PyObject * |
431 | MD5Type_update(MD5object *self, PyObject *obj) |
432 | /*[clinic end generated code: output=f6ad168416338423 input=6e1efcd9ecf17032]*/ |
433 | { |
434 | Py_buffer buf; |
435 | |
436 | GET_BUFFER_VIEW_OR_ERROUT(obj, &buf); |
437 | |
438 | md5_process(&self->hash_state, buf.buf, buf.len); |
439 | |
440 | PyBuffer_Release(&buf); |
441 | Py_RETURN_NONE; |
442 | } |
443 | |
444 | static PyMethodDef MD5_methods[] = { |
445 | MD5TYPE_COPY_METHODDEF |
446 | MD5TYPE_DIGEST_METHODDEF |
447 | MD5TYPE_HEXDIGEST_METHODDEF |
448 | MD5TYPE_UPDATE_METHODDEF |
449 | {NULL, NULL} /* sentinel */ |
450 | }; |
451 | |
452 | static PyObject * |
453 | MD5_get_block_size(PyObject *self, void *closure) |
454 | { |
455 | return PyLong_FromLong(MD5_BLOCKSIZE); |
456 | } |
457 | |
458 | static PyObject * |
459 | MD5_get_name(PyObject *self, void *closure) |
460 | { |
461 | return PyUnicode_FromStringAndSize("md5" , 3); |
462 | } |
463 | |
464 | static PyObject * |
465 | md5_get_digest_size(PyObject *self, void *closure) |
466 | { |
467 | return PyLong_FromLong(MD5_DIGESTSIZE); |
468 | } |
469 | |
470 | static PyGetSetDef MD5_getseters[] = { |
471 | {"block_size" , |
472 | (getter)MD5_get_block_size, NULL, |
473 | NULL, |
474 | NULL}, |
475 | {"name" , |
476 | (getter)MD5_get_name, NULL, |
477 | NULL, |
478 | NULL}, |
479 | {"digest_size" , |
480 | (getter)md5_get_digest_size, NULL, |
481 | NULL, |
482 | NULL}, |
483 | {NULL} /* Sentinel */ |
484 | }; |
485 | |
486 | static PyType_Slot md5_type_slots[] = { |
487 | {Py_tp_dealloc, MD5_dealloc}, |
488 | {Py_tp_methods, MD5_methods}, |
489 | {Py_tp_getset, MD5_getseters}, |
490 | {Py_tp_traverse, MD5_traverse}, |
491 | {0,0} |
492 | }; |
493 | |
494 | static PyType_Spec md5_type_spec = { |
495 | .name = "_md5.md5" , |
496 | .basicsize = sizeof(MD5object), |
497 | .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION | |
498 | Py_TPFLAGS_IMMUTABLETYPE | Py_TPFLAGS_HAVE_GC), |
499 | .slots = md5_type_slots |
500 | }; |
501 | |
502 | /* The single module-level function: new() */ |
503 | |
504 | /*[clinic input] |
505 | _md5.md5 |
506 | |
507 | string: object(c_default="NULL") = b'' |
508 | * |
509 | usedforsecurity: bool = True |
510 | |
511 | Return a new MD5 hash object; optionally initialized with a string. |
512 | [clinic start generated code]*/ |
513 | |
514 | static PyObject * |
515 | _md5_md5_impl(PyObject *module, PyObject *string, int usedforsecurity) |
516 | /*[clinic end generated code: output=587071f76254a4ac input=7a144a1905636985]*/ |
517 | { |
518 | MD5object *new; |
519 | Py_buffer buf; |
520 | |
521 | if (string) |
522 | GET_BUFFER_VIEW_OR_ERROUT(string, &buf); |
523 | |
524 | MD5State *st = md5_get_state(module); |
525 | if ((new = newMD5object(st)) == NULL) { |
526 | if (string) |
527 | PyBuffer_Release(&buf); |
528 | return NULL; |
529 | } |
530 | |
531 | md5_init(&new->hash_state); |
532 | |
533 | if (PyErr_Occurred()) { |
534 | Py_DECREF(new); |
535 | if (string) |
536 | PyBuffer_Release(&buf); |
537 | return NULL; |
538 | } |
539 | if (string) { |
540 | md5_process(&new->hash_state, buf.buf, buf.len); |
541 | PyBuffer_Release(&buf); |
542 | } |
543 | |
544 | return (PyObject *)new; |
545 | } |
546 | |
547 | |
548 | /* List of functions exported by this module */ |
549 | |
550 | static struct PyMethodDef MD5_functions[] = { |
551 | _MD5_MD5_METHODDEF |
552 | {NULL, NULL} /* Sentinel */ |
553 | }; |
554 | |
555 | static int |
556 | _md5_traverse(PyObject *module, visitproc visit, void *arg) |
557 | { |
558 | MD5State *state = md5_get_state(module); |
559 | Py_VISIT(state->md5_type); |
560 | return 0; |
561 | } |
562 | |
563 | static int |
564 | _md5_clear(PyObject *module) |
565 | { |
566 | MD5State *state = md5_get_state(module); |
567 | Py_CLEAR(state->md5_type); |
568 | return 0; |
569 | } |
570 | |
571 | static void |
572 | _md5_free(void *module) |
573 | { |
574 | _md5_clear((PyObject *)module); |
575 | } |
576 | |
577 | /* Initialize this module. */ |
578 | static int |
579 | md5_exec(PyObject *m) |
580 | { |
581 | MD5State *st = md5_get_state(m); |
582 | |
583 | st->md5_type = (PyTypeObject *)PyType_FromModuleAndSpec( |
584 | m, &md5_type_spec, NULL); |
585 | |
586 | if (st->md5_type == NULL) { |
587 | return -1; |
588 | } |
589 | |
590 | Py_INCREF((PyObject *)st->md5_type); |
591 | if (PyModule_AddObject(m, "MD5Type" , (PyObject *)st->md5_type) < 0) { |
592 | Py_DECREF(st->md5_type); |
593 | return -1; |
594 | } |
595 | |
596 | return 0; |
597 | } |
598 | |
599 | static PyModuleDef_Slot _md5_slots[] = { |
600 | {Py_mod_exec, md5_exec}, |
601 | {0, NULL} |
602 | }; |
603 | |
604 | |
605 | static struct PyModuleDef _md5module = { |
606 | PyModuleDef_HEAD_INIT, |
607 | .m_name = "_md5" , |
608 | .m_size = sizeof(MD5State), |
609 | .m_methods = MD5_functions, |
610 | .m_slots = _md5_slots, |
611 | .m_traverse = _md5_traverse, |
612 | .m_clear = _md5_clear, |
613 | .m_free = _md5_free, |
614 | }; |
615 | |
616 | PyMODINIT_FUNC |
617 | PyInit__md5(void) |
618 | { |
619 | return PyModuleDef_Init(&_md5module); |
620 | } |
621 | |