source: trunk/essentials/dev-lang/perl/ext/Digest/MD5/MD5.xs

Last change on this file was 3181, checked in by bird, 19 years ago

perl 5.8.8
File size: 18.9 KB
Line 
1/* $Id: MD5.xs,v 1.45 2005/11/26 11:06:20 gisle Exp $ */
2
3/*
4 * This library is free software; you can redistribute it and/or
5 * modify it under the same terms as Perl itself.
6 *
7 * Copyright 1998-2000 Gisle Aas.
8 * Copyright 1995-1996 Neil Winton.
9 * Copyright 1991-1992 RSA Data Security, Inc.
10 *
11 * This code is derived from Neil Winton's MD5-1.7 Perl module, which in
12 * turn is derived from the reference implementation in RFC 1321 which
13 * comes with this message:
14 *
15 * Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
16 * rights reserved.
17 *
18 * License to copy and use this software is granted provided that it
19 * is identified as the "RSA Data Security, Inc. MD5 Message-Digest
20 * Algorithm" in all material mentioning or referencing this software
21 * or this function.
22 *
23 * License is also granted to make and use derivative works provided
24 * that such works are identified as "derived from the RSA Data
25 * Security, Inc. MD5 Message-Digest Algorithm" in all material
26 * mentioning or referencing the derived work.
27 *
28 * RSA Data Security, Inc. makes no representations concerning either
29 * the merchantability of this software or the suitability of this
30 * software for any particular purpose. It is provided "as is"
31 * without express or implied warranty of any kind.
32 *
33 * These notices must be retained in any copies of any part of this
34 * documentation and/or software.
35 */
36
37#ifdef __cplusplus
38extern "C" {
39#endif
40#define PERL_NO_GET_CONTEXT /* we want efficiency */
41#include "EXTERN.h"
42#include "perl.h"
43#include "XSUB.h"
44#ifdef __cplusplus
45}
46#endif
47
48#ifndef PERL_VERSION
49# include <patchlevel.h>
50# if !(defined(PERL_VERSION) || (SUBVERSION > 0 && defined(PATCHLEVEL)))
51# include <could_not_find_Perl_patchlevel.h>
52# endif
53# define PERL_REVISION 5
54# define PERL_VERSION PATCHLEVEL
55# define PERL_SUBVERSION SUBVERSION
56#endif
57
58#if PERL_VERSION <= 4 && !defined(PL_dowarn)
59 #define PL_dowarn dowarn
60#endif
61
62#ifdef G_WARN_ON
63 #define DOWARN (PL_dowarn & G_WARN_ON)
64#else
65 #define DOWARN PL_dowarn
66#endif
67
68#ifdef SvPVbyte
69 #if PERL_REVISION == 5 && PERL_VERSION < 7
70 /* SvPVbyte does not work in perl-5.6.1, borrowed version for 5.7.3 */
71 #undef SvPVbyte
72 #define SvPVbyte(sv, lp) \
73 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK) \
74 ? ((lp = SvCUR(sv)), SvPVX(sv)) : my_sv_2pvbyte(aTHX_ sv, &lp))
75
76 static char *
77 my_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
78 {
79 sv_utf8_downgrade(sv,0);
80 return SvPV(sv,*lp);
81 }
82 #endif
83#else
84 #define SvPVbyte SvPV
85#endif
86
87#ifndef dTHX
88 #define pTHX_
89 #define aTHX_
90#endif
91
92/* Perl does not guarantee that U32 is exactly 32 bits. Some system
93 * has no integral type with exactly 32 bits. For instance, A Cray has
94 * short, int and long all at 64 bits so we need to apply this macro
95 * to reduce U32 values to 32 bits at appropriate places. If U32
96 * really does have 32 bits then this is a no-op.
97 */
98#if BYTEORDER > 0x4321 || defined(TRUNCATE_U32)
99 #define TO32(x) ((x) & 0xFFFFffff)
100 #define TRUNC32(x) ((x) &= 0xFFFFffff)
101#else
102 #define TO32(x) (x)
103 #define TRUNC32(x) /*nothing*/
104#endif
105
106/* The MD5 algorithm is defined in terms of little endian 32-bit
107 * values. The following macros (and functions) allow us to convert
108 * between native integers and such values.
109 */
110#undef BYTESWAP
111#ifndef U32_ALIGNMENT_REQUIRED
112 #if BYTEORDER == 0x1234 /* 32-bit little endian */
113 #define BYTESWAP(x) (x) /* no-op */
114
115 #elif BYTEORDER == 0x4321 /* 32-bit big endian */
116 #define BYTESWAP(x) ((((x)&0xFF)<<24) \
117 |(((x)>>24)&0xFF) \
118 |(((x)&0x0000FF00)<<8) \
119 |(((x)&0x00FF0000)>>8) )
120 #endif
121#endif
122
123#ifndef BYTESWAP
124static void u2s(U32 u, U8* s)
125{
126 *s++ = (U8)(u & 0xFF);
127 *s++ = (U8)((u >> 8) & 0xFF);
128 *s++ = (U8)((u >> 16) & 0xFF);
129 *s = (U8)((u >> 24) & 0xFF);
130}
131
132#define s2u(s,u) ((u) = (U32)(*s) | \
133 ((U32)(*(s+1)) << 8) | \
134 ((U32)(*(s+2)) << 16) | \
135 ((U32)(*(s+3)) << 24))
136#endif
137
138#define MD5_CTX_SIGNATURE 200003165
139
140/* This stucture keeps the current state of algorithm.
141 */
142typedef struct {
143 U32 signature; /* safer cast in get_md5_ctx() */
144 U32 A, B, C, D; /* current digest */
145 U32 bytes_low; /* counts bytes in message */
146 U32 bytes_high; /* turn it into a 64-bit counter */
147 U8 buffer[128]; /* collect complete 64 byte blocks */
148} MD5_CTX;
149
150
151/* Padding is added at the end of the message in order to fill a
152 * complete 64 byte block (- 8 bytes for the message length). The
153 * padding is also the reason the buffer in MD5_CTX have to be
154 * 128 bytes.
155 */
156static const unsigned char PADDING[64] = {
157 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
158 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
159 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
160};
161
162/* Constants for MD5Transform routine.
163 */
164#define S11 7
165#define S12 12
166#define S13 17
167#define S14 22
168#define S21 5
169#define S22 9
170#define S23 14
171#define S24 20
172#define S31 4
173#define S32 11
174#define S33 16
175#define S34 23
176#define S41 6
177#define S42 10
178#define S43 15
179#define S44 21
180
181/* F, G, H and I are basic MD5 functions.
182 */
183#define F(x, y, z) ((((x) & ((y) ^ (z))) ^ (z)))
184#define G(x, y, z) F(z, x, y)
185#define H(x, y, z) ((x) ^ (y) ^ (z))
186#define I(x, y, z) ((y) ^ ((x) | (~z)))
187
188/* ROTATE_LEFT rotates x left n bits.
189 */
190#define ROTATE_LEFT(x, n) (((x) << (n) | ((x) >> (32-(n)))))
191
192/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
193 * Rotation is separate from addition to prevent recomputation.
194 */
195#define FF(a, b, c, d, s, ac) \
196 (a) += F ((b), (c), (d)) + (NEXTx) + (U32)(ac); \
197 TRUNC32((a)); \
198 (a) = ROTATE_LEFT ((a), (s)); \
199 (a) += (b); \
200 TRUNC32((a));
201
202#define GG(a, b, c, d, x, s, ac) \
203 (a) += G ((b), (c), (d)) + X[x] + (U32)(ac); \
204 TRUNC32((a)); \
205 (a) = ROTATE_LEFT ((a), (s)); \
206 (a) += (b); \
207 TRUNC32((a));
208
209#define HH(a, b, c, d, x, s, ac) \
210 (a) += H ((b), (c), (d)) + X[x] + (U32)(ac); \
211 TRUNC32((a)); \
212 (a) = ROTATE_LEFT ((a), (s)); \
213 (a) += (b); \
214 TRUNC32((a));
215
216#define II(a, b, c, d, x, s, ac) \
217 (a) += I ((b), (c), (d)) + X[x] + (U32)(ac); \
218 TRUNC32((a)); \
219 (a) = ROTATE_LEFT ((a), (s)); \
220 (a) += (b); \
221 TRUNC32((a));
222
223
224static void
225MD5Init(MD5_CTX *ctx)
226{
227 /* Start state */
228 ctx->A = 0x67452301;
229 ctx->B = 0xefcdab89;
230 ctx->C = 0x98badcfe;
231 ctx->D = 0x10325476;
232
233 /* message length */
234 ctx->bytes_low = ctx->bytes_high = 0;
235}
236
237
238static void
239MD5Transform(MD5_CTX* ctx, const U8* buf, STRLEN blocks)
240{
241#ifdef MD5_DEBUG
242 static int tcount = 0;
243#endif
244
245 U32 A = ctx->A;
246 U32 B = ctx->B;
247 U32 C = ctx->C;
248 U32 D = ctx->D;
249
250#ifndef U32_ALIGNMENT_REQUIRED
251 const U32 *x = (U32*)buf; /* really just type casting */
252#endif
253
254 do {
255 U32 a = A;
256 U32 b = B;
257 U32 c = C;
258 U32 d = D;
259
260#if BYTEORDER == 0x1234 && !defined(U32_ALIGNMENT_REQUIRED)
261 const U32 *X = x;
262 #define NEXTx (*x++)
263#else
264 U32 X[16]; /* converted values, used in round 2-4 */
265 U32 *uptr = X;
266 U32 tmp;
267 #ifdef BYTESWAP
268 #define NEXTx (tmp=*x++, *uptr++ = BYTESWAP(tmp))
269 #else
270 #define NEXTx (s2u(buf,tmp), buf += 4, *uptr++ = tmp)
271 #endif
272#endif
273
274#ifdef MD5_DEBUG
275 if (buf == ctx->buffer)
276 fprintf(stderr,"%5d: Transform ctx->buffer", ++tcount);
277 else
278 fprintf(stderr,"%5d: Transform %p (%d)", ++tcount, buf, blocks);
279
280 {
281 int i;
282 fprintf(stderr,"[");
283 for (i = 0; i < 16; i++) {
284 fprintf(stderr,"%x,", x[i]);
285 }
286 fprintf(stderr,"]\n");
287 }
288#endif
289
290 /* Round 1 */
291 FF (a, b, c, d, S11, 0xd76aa478); /* 1 */
292 FF (d, a, b, c, S12, 0xe8c7b756); /* 2 */
293 FF (c, d, a, b, S13, 0x242070db); /* 3 */
294 FF (b, c, d, a, S14, 0xc1bdceee); /* 4 */
295 FF (a, b, c, d, S11, 0xf57c0faf); /* 5 */
296 FF (d, a, b, c, S12, 0x4787c62a); /* 6 */
297 FF (c, d, a, b, S13, 0xa8304613); /* 7 */
298 FF (b, c, d, a, S14, 0xfd469501); /* 8 */
299 FF (a, b, c, d, S11, 0x698098d8); /* 9 */
300 FF (d, a, b, c, S12, 0x8b44f7af); /* 10 */
301 FF (c, d, a, b, S13, 0xffff5bb1); /* 11 */
302 FF (b, c, d, a, S14, 0x895cd7be); /* 12 */
303 FF (a, b, c, d, S11, 0x6b901122); /* 13 */
304 FF (d, a, b, c, S12, 0xfd987193); /* 14 */
305 FF (c, d, a, b, S13, 0xa679438e); /* 15 */
306 FF (b, c, d, a, S14, 0x49b40821); /* 16 */
307
308 /* Round 2 */
309 GG (a, b, c, d, 1, S21, 0xf61e2562); /* 17 */
310 GG (d, a, b, c, 6, S22, 0xc040b340); /* 18 */
311 GG (c, d, a, b, 11, S23, 0x265e5a51); /* 19 */
312 GG (b, c, d, a, 0, S24, 0xe9b6c7aa); /* 20 */
313 GG (a, b, c, d, 5, S21, 0xd62f105d); /* 21 */
314 GG (d, a, b, c, 10, S22, 0x2441453); /* 22 */
315 GG (c, d, a, b, 15, S23, 0xd8a1e681); /* 23 */
316 GG (b, c, d, a, 4, S24, 0xe7d3fbc8); /* 24 */
317 GG (a, b, c, d, 9, S21, 0x21e1cde6); /* 25 */
318 GG (d, a, b, c, 14, S22, 0xc33707d6); /* 26 */
319 GG (c, d, a, b, 3, S23, 0xf4d50d87); /* 27 */
320 GG (b, c, d, a, 8, S24, 0x455a14ed); /* 28 */
321 GG (a, b, c, d, 13, S21, 0xa9e3e905); /* 29 */
322 GG (d, a, b, c, 2, S22, 0xfcefa3f8); /* 30 */
323 GG (c, d, a, b, 7, S23, 0x676f02d9); /* 31 */
324 GG (b, c, d, a, 12, S24, 0x8d2a4c8a); /* 32 */
325
326 /* Round 3 */
327 HH (a, b, c, d, 5, S31, 0xfffa3942); /* 33 */
328 HH (d, a, b, c, 8, S32, 0x8771f681); /* 34 */
329 HH (c, d, a, b, 11, S33, 0x6d9d6122); /* 35 */
330 HH (b, c, d, a, 14, S34, 0xfde5380c); /* 36 */
331 HH (a, b, c, d, 1, S31, 0xa4beea44); /* 37 */
332 HH (d, a, b, c, 4, S32, 0x4bdecfa9); /* 38 */
333 HH (c, d, a, b, 7, S33, 0xf6bb4b60); /* 39 */
334 HH (b, c, d, a, 10, S34, 0xbebfbc70); /* 40 */
335 HH (a, b, c, d, 13, S31, 0x289b7ec6); /* 41 */
336 HH (d, a, b, c, 0, S32, 0xeaa127fa); /* 42 */
337 HH (c, d, a, b, 3, S33, 0xd4ef3085); /* 43 */
338 HH (b, c, d, a, 6, S34, 0x4881d05); /* 44 */
339 HH (a, b, c, d, 9, S31, 0xd9d4d039); /* 45 */
340 HH (d, a, b, c, 12, S32, 0xe6db99e5); /* 46 */
341 HH (c, d, a, b, 15, S33, 0x1fa27cf8); /* 47 */
342 HH (b, c, d, a, 2, S34, 0xc4ac5665); /* 48 */
343
344 /* Round 4 */
345 II (a, b, c, d, 0, S41, 0xf4292244); /* 49 */
346 II (d, a, b, c, 7, S42, 0x432aff97); /* 50 */
347 II (c, d, a, b, 14, S43, 0xab9423a7); /* 51 */
348 II (b, c, d, a, 5, S44, 0xfc93a039); /* 52 */
349 II (a, b, c, d, 12, S41, 0x655b59c3); /* 53 */
350 II (d, a, b, c, 3, S42, 0x8f0ccc92); /* 54 */
351 II (c, d, a, b, 10, S43, 0xffeff47d); /* 55 */
352 II (b, c, d, a, 1, S44, 0x85845dd1); /* 56 */
353 II (a, b, c, d, 8, S41, 0x6fa87e4f); /* 57 */
354 II (d, a, b, c, 15, S42, 0xfe2ce6e0); /* 58 */
355 II (c, d, a, b, 6, S43, 0xa3014314); /* 59 */
356 II (b, c, d, a, 13, S44, 0x4e0811a1); /* 60 */
357 II (a, b, c, d, 4, S41, 0xf7537e82); /* 61 */
358 II (d, a, b, c, 11, S42, 0xbd3af235); /* 62 */
359 II (c, d, a, b, 2, S43, 0x2ad7d2bb); /* 63 */
360 II (b, c, d, a, 9, S44, 0xeb86d391); /* 64 */
361
362 A += a; TRUNC32(A);
363 B += b; TRUNC32(B);
364 C += c; TRUNC32(C);
365 D += d; TRUNC32(D);
366
367 } while (--blocks);
368 ctx->A = A;
369 ctx->B = B;
370 ctx->C = C;
371 ctx->D = D;
372}
373
374
375#ifdef MD5_DEBUG
376static char*
377ctx_dump(MD5_CTX* ctx)
378{
379 static char buf[1024];
380 sprintf(buf, "{A=%x,B=%x,C=%x,D=%x,%d,%d(%d)}",
381 ctx->A, ctx->B, ctx->C, ctx->D,
382 ctx->bytes_low, ctx->bytes_high, (ctx->bytes_low&0x3F));
383 return buf;
384}
385#endif
386
387
388static void
389MD5Update(MD5_CTX* ctx, const U8* buf, STRLEN len)
390{
391 STRLEN blocks;
392 STRLEN fill = ctx->bytes_low & 0x3F;
393
394#ifdef MD5_DEBUG
395 static int ucount = 0;
396 fprintf(stderr,"%5i: Update(%s, %p, %d)\n", ++ucount, ctx_dump(ctx),
397 buf, len);
398#endif
399
400 ctx->bytes_low += len;
401 if (ctx->bytes_low < len) /* wrap around */
402 ctx->bytes_high++;
403
404 if (fill) {
405 STRLEN missing = 64 - fill;
406 if (len < missing) {
407 Copy(buf, ctx->buffer + fill, len, U8);
408 return;
409 }
410 Copy(buf, ctx->buffer + fill, missing, U8);
411 MD5Transform(ctx, ctx->buffer, 1);
412 buf += missing;
413 len -= missing;
414 }
415
416 blocks = len >> 6;
417 if (blocks)
418 MD5Transform(ctx, buf, blocks);
419 if ( (len &= 0x3F)) {
420 Copy(buf + (blocks << 6), ctx->buffer, len, U8);
421 }
422}
423
424
425static void
426MD5Final(U8* digest, MD5_CTX *ctx)
427{
428 STRLEN fill = ctx->bytes_low & 0x3F;
429 STRLEN padlen = (fill < 56 ? 56 : 120) - fill;
430 U32 bits_low, bits_high;
431#ifdef MD5_DEBUG
432 fprintf(stderr," Final: %s\n", ctx_dump(ctx));
433#endif
434 Copy(PADDING, ctx->buffer + fill, padlen, U8);
435 fill += padlen;
436
437 bits_low = ctx->bytes_low << 3;
438 bits_high = (ctx->bytes_high << 3) | (ctx->bytes_low >> 29);
439#ifdef BYTESWAP
440 *(U32*)(ctx->buffer + fill) = BYTESWAP(bits_low); fill += 4;
441 *(U32*)(ctx->buffer + fill) = BYTESWAP(bits_high); fill += 4;
442#else
443 u2s(bits_low, ctx->buffer + fill); fill += 4;
444 u2s(bits_high, ctx->buffer + fill); fill += 4;
445#endif
446
447 MD5Transform(ctx, ctx->buffer, fill >> 6);
448#ifdef MD5_DEBUG
449 fprintf(stderr," Result: %s\n", ctx_dump(ctx));
450#endif
451
452#ifdef BYTESWAP
453 *(U32*)digest = BYTESWAP(ctx->A); digest += 4;
454 *(U32*)digest = BYTESWAP(ctx->B); digest += 4;
455 *(U32*)digest = BYTESWAP(ctx->C); digest += 4;
456 *(U32*)digest = BYTESWAP(ctx->D);
457#else
458 u2s(ctx->A, digest);
459 u2s(ctx->B, digest+4);
460 u2s(ctx->C, digest+8);
461 u2s(ctx->D, digest+12);
462#endif
463}
464
465#ifndef INT2PTR
466#define INT2PTR(any,d) (any)(d)
467#endif
468
469static MD5_CTX* get_md5_ctx(pTHX_ SV* sv)
470{
471 if (SvROK(sv)) {
472 sv = SvRV(sv);
473 if (SvIOK(sv)) {
474 MD5_CTX* ctx = INT2PTR(MD5_CTX*, SvIV(sv));
475 if (ctx && ctx->signature == MD5_CTX_SIGNATURE) {
476 return ctx;
477 }
478 }
479 }
480 croak("Not a reference to a Digest::MD5 object");
481 return (MD5_CTX*)0; /* some compilers insist on a return value */
482}
483
484
485static char* hex_16(const unsigned char* from, char* to)
486{
487 static const char hexdigits[] = "0123456789abcdef";
488 const unsigned char *end = from + 16;
489 char *d = to;
490
491 while (from < end) {
492 *d++ = hexdigits[(*from >> 4)];
493 *d++ = hexdigits[(*from & 0x0F)];
494 from++;
495 }
496 *d = '\0';
497 return to;
498}
499
500static char* base64_16(const unsigned char* from, char* to)
501{
502 static const char base64[] =
503 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
504 const unsigned char *end = from + 16;
505 unsigned char c1, c2, c3;
506 char *d = to;
507
508 while (1) {
509 c1 = *from++;
510 *d++ = base64[c1>>2];
511 if (from == end) {
512 *d++ = base64[(c1 & 0x3) << 4];
513 break;
514 }
515 c2 = *from++;
516 c3 = *from++;
517 *d++ = base64[((c1 & 0x3) << 4) | ((c2 & 0xF0) >> 4)];
518 *d++ = base64[((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6)];
519 *d++ = base64[c3 & 0x3F];
520 }
521 *d = '\0';
522 return to;
523}
524
525/* Formats */
526#define F_BIN 0
527#define F_HEX 1
528#define F_B64 2
529
530static SV* make_mortal_sv(pTHX_ const unsigned char *src, int type)
531{
532 STRLEN len;
533 char result[33];
534 char *ret;
535
536 switch (type) {
537 case F_BIN:
538 ret = (char*)src;
539 len = 16;
540 break;
541 case F_HEX:
542 ret = hex_16(src, result);
543 len = 32;
544 break;
545 case F_B64:
546 ret = base64_16(src, result);
547 len = 22;
548 break;
549 default:
550 croak("Bad convertion type (%d)", type);
551 break;
552 }
553 return sv_2mortal(newSVpv(ret,len));
554}
555
556
557/********************************************************************/
558
559typedef PerlIO* InputStream;
560
561MODULE = Digest::MD5 PACKAGE = Digest::MD5
562
563PROTOTYPES: DISABLE
564
565void
566new(xclass)
567 SV* xclass
568 PREINIT:
569 MD5_CTX* context;
570 PPCODE:
571 if (!SvROK(xclass)) {
572 STRLEN my_na;
573 char *sclass = SvPV(xclass, my_na);
574 New(55, context, 1, MD5_CTX);
575 context->signature = MD5_CTX_SIGNATURE;
576 ST(0) = sv_newmortal();
577 sv_setref_pv(ST(0), sclass, (void*)context);
578 SvREADONLY_on(SvRV(ST(0)));
579 } else {
580 context = get_md5_ctx(aTHX_ xclass);
581 }
582 MD5Init(context);
583 XSRETURN(1);
584
585void
586clone(self)
587 SV* self
588 PREINIT:
589 MD5_CTX* cont = get_md5_ctx(aTHX_ self);
590 char *myname = sv_reftype(SvRV(self),TRUE);
591 MD5_CTX* context;
592 PPCODE:
593 New(55, context, 1, MD5_CTX);
594 ST(0) = sv_newmortal();
595 sv_setref_pv(ST(0), myname , (void*)context);
596 SvREADONLY_on(SvRV(ST(0)));
597 memcpy(context,cont,sizeof(MD5_CTX));
598 XSRETURN(1);
599
600void
601DESTROY(context)
602 MD5_CTX* context
603 CODE:
604 Safefree(context);
605
606void
607add(self, ...)
608 SV* self
609 PREINIT:
610 MD5_CTX* context = get_md5_ctx(aTHX_ self);
611 int i;
612 unsigned char *data;
613 STRLEN len;
614 PPCODE:
615 for (i = 1; i < items; i++) {
616 data = (unsigned char *)(SvPVbyte(ST(i), len));
617 MD5Update(context, data, len);
618 }
619 XSRETURN(1); /* self */
620
621void
622addfile(self, fh)
623 SV* self
624 InputStream fh
625 PREINIT:
626 MD5_CTX* context = get_md5_ctx(aTHX_ self);
627 STRLEN fill = context->bytes_low & 0x3F;
628#ifdef USE_HEAP_INSTEAD_OF_STACK
629 unsigned char* buffer;
630#else
631 unsigned char buffer[4096];
632#endif
633 int n;
634 CODE:
635 if (fh) {
636#ifdef USE_HEAP_INSTEAD_OF_STACK
637 New(0, buffer, 4096, unsigned char);
638 assert(buffer);
639#endif
640 if (fill) {
641 /* The MD5Update() function is faster if it can work with
642 * complete blocks. This will fill up any buffered block
643 * first.
644 */
645 STRLEN missing = 64 - fill;
646 if ( (n = PerlIO_read(fh, buffer, missing)) > 0)
647 MD5Update(context, buffer, n);
648 else
649 XSRETURN(1); /* self */
650 }
651
652 /* Process blocks until EOF or error */
653 while ( (n = PerlIO_read(fh, buffer, sizeof(buffer))) > 0) {
654 MD5Update(context, buffer, n);
655 }
656#ifdef USE_HEAP_INSTEAD_OF_STACK
657 Safefree(buffer);
658#endif
659 if (PerlIO_error(fh)) {
660 croak("Reading from filehandle failed");
661 }
662 }
663 else {
664 croak("No filehandle passed");
665 }
666 XSRETURN(1); /* self */
667
668void
669digest(context)
670 MD5_CTX* context
671 ALIAS:
672 Digest::MD5::digest = F_BIN
673 Digest::MD5::hexdigest = F_HEX
674 Digest::MD5::b64digest = F_B64
675 PREINIT:
676 unsigned char digeststr[16];
677 PPCODE:
678 MD5Final(digeststr, context);
679 MD5Init(context); /* In case it is reused */
680 ST(0) = make_mortal_sv(aTHX_ digeststr, ix);
681 XSRETURN(1);
682
683void
684md5(...)
685 ALIAS:
686 Digest::MD5::md5 = F_BIN
687 Digest::MD5::md5_hex = F_HEX
688 Digest::MD5::md5_base64 = F_B64
689 PREINIT:
690 MD5_CTX ctx;
691 int i;
692 unsigned char *data;
693 STRLEN len;
694 unsigned char digeststr[16];
695 PPCODE:
696 MD5Init(&ctx);
697
698 if (DOWARN) {
699 char *msg = 0;
700 if (items == 1) {
701 if (SvROK(ST(0))) {
702 SV* sv = SvRV(ST(0));
703 if (SvOBJECT(sv) && strEQ(HvNAME(SvSTASH(sv)), "Digest::MD5"))
704 msg = "probably called as method";
705 else
706 msg = "called with reference argument";
707 }
708 }
709 else if (items > 1) {
710 data = (unsigned char *)SvPVbyte(ST(0), len);
711 if (len == 11 && memEQ("Digest::MD5", data, 11)) {
712 msg = "probably called as class method";
713 }
714 }
715 if (msg) {
716 char *f = (ix == F_BIN) ? "md5" :
717 (ix == F_HEX) ? "md5_hex" : "md5_base64";
718 warn("&Digest::MD5::%s function %s", f, msg);
719 }
720 }
721
722 for (i = 0; i < items; i++) {
723 data = (unsigned char *)(SvPVbyte(ST(i), len));
724 MD5Update(&ctx, data, len);
725 }
726 MD5Final(digeststr, &ctx);
727 ST(0) = make_mortal_sv(aTHX_ digeststr, ix);
728 XSRETURN(1);
Note: See TracBrowser for help on using the repository browser.