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Diffstat (limited to 'src/daemon/https/lgl/md5.c')
-rw-r--r-- | src/daemon/https/lgl/md5.c | 453 |
1 files changed, 0 insertions, 453 deletions
diff --git a/src/daemon/https/lgl/md5.c b/src/daemon/https/lgl/md5.c deleted file mode 100644 index 8cca27f5..00000000 --- a/src/daemon/https/lgl/md5.c +++ /dev/null | |||
@@ -1,453 +0,0 @@ | |||
1 | /* Functions to compute MD5 message digest of files or memory blocks. | ||
2 | according to the definition of MD5 in RFC 1321 from April 1992. | ||
3 | Copyright (C) 1995,1996,1997,1999,2000,2001,2005,2006 | ||
4 | Free Software Foundation, Inc. | ||
5 | This file is part of the GNU C Library. | ||
6 | |||
7 | This program is free software; you can redistribute it and/or modify it | ||
8 | under the terms of the GNU Lesser General Public License as published by the | ||
9 | Free Software Foundation; either version 2.1, or (at your option) any | ||
10 | later version. | ||
11 | |||
12 | This program is distributed in the hope that it will be useful, | ||
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
15 | GNU Lesser General Public License for more details. | ||
16 | |||
17 | You should have received a copy of the GNU Lesser General Public License | ||
18 | along with this program; if not, write to the Free Software Foundation, | ||
19 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | ||
20 | |||
21 | /* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995. */ | ||
22 | |||
23 | #include "MHD_config.h" | ||
24 | |||
25 | #include "md5.h" | ||
26 | |||
27 | #include <stddef.h> | ||
28 | #include <stdlib.h> | ||
29 | #include <string.h> | ||
30 | #include <sys/types.h> | ||
31 | |||
32 | #if USE_UNLOCKED_IO | ||
33 | # include "unlocked-io.h" | ||
34 | #endif | ||
35 | |||
36 | #ifdef _LIBC | ||
37 | # include <endian.h> | ||
38 | # if __BYTE_ORDER == __BIG_ENDIAN | ||
39 | # define WORDS_BIGENDIAN 1 | ||
40 | # endif | ||
41 | /* We need to keep the namespace clean so define the MD5 function | ||
42 | protected using leading __ . */ | ||
43 | # define MHD_md5_init_ctx __MHD_md5_init_ctx | ||
44 | # define MHD_md5_process_block __MHD_md5_process_block | ||
45 | # define MHD_md5_process_bytes __MHD_md5_process_bytes | ||
46 | # define MHD_md5_finish_ctx __MHD_md5_finish_ctx | ||
47 | # define MHD_md5_read_ctx __MHD_md5_read_ctx | ||
48 | # define MHD_md5_stream __MHD_md5_stream | ||
49 | # define MHD_md5_buffer __MHD_md5_buffer | ||
50 | #endif | ||
51 | |||
52 | #ifdef WORDS_BIGENDIAN | ||
53 | # define SWAP(n) \ | ||
54 | (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24)) | ||
55 | #else | ||
56 | # define SWAP(n) (n) | ||
57 | #endif | ||
58 | |||
59 | #define BLOCKSIZE 4096 | ||
60 | #if BLOCKSIZE % 64 != 0 | ||
61 | # error "invalid BLOCKSIZE" | ||
62 | #endif | ||
63 | |||
64 | /* This array contains the bytes used to pad the buffer to the next | ||
65 | 64-byte boundary. (RFC 1321, 3.1: Step 1) */ | ||
66 | static const unsigned char fillbuf[64] = { 0x80, 0 /* , 0, 0, ... */ }; | ||
67 | |||
68 | |||
69 | /* Initialize structure containing state of computation. | ||
70 | (RFC 1321, 3.3: Step 3) */ | ||
71 | void | ||
72 | MHD_md5_init_ctx (struct MHD_md5_ctx *ctx) | ||
73 | { | ||
74 | ctx->A = 0x67452301; | ||
75 | ctx->B = 0xefcdab89; | ||
76 | ctx->C = 0x98badcfe; | ||
77 | ctx->D = 0x10325476; | ||
78 | |||
79 | ctx->total[0] = ctx->total[1] = 0; | ||
80 | ctx->buflen = 0; | ||
81 | } | ||
82 | |||
83 | /* Put result from CTX in first 16 bytes following RESBUF. The result | ||
84 | must be in little endian byte order. | ||
85 | |||
86 | IMPORTANT: On some systems it is required that RESBUF is correctly | ||
87 | aligned for a 32-bit value. */ | ||
88 | void * | ||
89 | MHD_md5_read_ctx (const struct MHD_md5_ctx *ctx, void *resbuf) | ||
90 | { | ||
91 | ((uint32_t *) resbuf)[0] = SWAP (ctx->A); | ||
92 | ((uint32_t *) resbuf)[1] = SWAP (ctx->B); | ||
93 | ((uint32_t *) resbuf)[2] = SWAP (ctx->C); | ||
94 | ((uint32_t *) resbuf)[3] = SWAP (ctx->D); | ||
95 | |||
96 | return resbuf; | ||
97 | } | ||
98 | |||
99 | /* Process the remaining bytes in the internal buffer and the usual | ||
100 | prolog according to the standard and write the result to RESBUF. | ||
101 | |||
102 | IMPORTANT: On some systems it is required that RESBUF is correctly | ||
103 | aligned for a 32-bit value. */ | ||
104 | void * | ||
105 | MHD_md5_finish_ctx (struct MHD_md5_ctx *ctx, void *resbuf) | ||
106 | { | ||
107 | /* Take yet unprocessed bytes into account. */ | ||
108 | uint32_t bytes = ctx->buflen; | ||
109 | size_t size = (bytes < 56) ? 64 / 4 : 64 * 2 / 4; | ||
110 | |||
111 | /* Now count remaining bytes. */ | ||
112 | ctx->total[0] += bytes; | ||
113 | if (ctx->total[0] < bytes) | ||
114 | ++ctx->total[1]; | ||
115 | |||
116 | /* Put the 64-bit file length in *bits* at the end of the buffer. */ | ||
117 | ctx->buffer[size - 2] = SWAP (ctx->total[0] << 3); | ||
118 | ctx->buffer[size - 1] = SWAP ((ctx->total[1] << 3) | (ctx->total[0] >> 29)); | ||
119 | |||
120 | memcpy (&((char *) ctx->buffer)[bytes], fillbuf, (size - 2) * 4 - bytes); | ||
121 | |||
122 | /* Process last bytes. */ | ||
123 | MHD_md5_process_block (ctx->buffer, size * 4, ctx); | ||
124 | |||
125 | return MHD_md5_read_ctx (ctx, resbuf); | ||
126 | } | ||
127 | |||
128 | /* Compute MD5 message digest for bytes read from STREAM. The | ||
129 | resulting message digest number will be written into the 16 bytes | ||
130 | beginning at RESBLOCK. */ | ||
131 | int | ||
132 | MHD_md5_stream (FILE * stream, void *resblock) | ||
133 | { | ||
134 | struct MHD_md5_ctx ctx; | ||
135 | char buffer[BLOCKSIZE + 72]; | ||
136 | size_t sum; | ||
137 | |||
138 | /* Initialize the computation context. */ | ||
139 | MHD_md5_init_ctx (&ctx); | ||
140 | |||
141 | /* Iterate over full file contents. */ | ||
142 | while (1) | ||
143 | { | ||
144 | /* We read the file in blocks of BLOCKSIZE bytes. One call of the | ||
145 | computation function processes the whole buffer so that with the | ||
146 | next round of the loop another block can be read. */ | ||
147 | size_t n; | ||
148 | sum = 0; | ||
149 | |||
150 | /* Read block. Take care for partial reads. */ | ||
151 | while (1) | ||
152 | { | ||
153 | n = fread (buffer + sum, 1, BLOCKSIZE - sum, stream); | ||
154 | |||
155 | sum += n; | ||
156 | |||
157 | if (sum == BLOCKSIZE) | ||
158 | break; | ||
159 | |||
160 | if (n == 0) | ||
161 | { | ||
162 | /* Check for the error flag IFF N == 0, so that we don't | ||
163 | exit the loop after a partial read due to e.g., EAGAIN | ||
164 | or EWOULDBLOCK. */ | ||
165 | if (ferror (stream)) | ||
166 | return 1; | ||
167 | goto process_partial_block; | ||
168 | } | ||
169 | |||
170 | /* We've read at least one byte, so ignore errors. But always | ||
171 | check for EOF, since feof may be true even though N > 0. | ||
172 | Otherwise, we could end up calling fread after EOF. */ | ||
173 | if (feof (stream)) | ||
174 | goto process_partial_block; | ||
175 | } | ||
176 | |||
177 | /* Process buffer with BLOCKSIZE bytes. Note that | ||
178 | BLOCKSIZE % 64 == 0 | ||
179 | */ | ||
180 | MHD_md5_process_block (buffer, BLOCKSIZE, &ctx); | ||
181 | } | ||
182 | |||
183 | process_partial_block: | ||
184 | |||
185 | /* Process any remaining bytes. */ | ||
186 | if (sum > 0) | ||
187 | MHD_md5_process_bytes (buffer, sum, &ctx); | ||
188 | |||
189 | /* Construct result in desired memory. */ | ||
190 | MHD_md5_finish_ctx (&ctx, resblock); | ||
191 | return 0; | ||
192 | } | ||
193 | |||
194 | /* Compute MD5 message digest for LEN bytes beginning at BUFFER. The | ||
195 | result is always in little endian byte order, so that a byte-wise | ||
196 | output yields to the wanted ASCII representation of the message | ||
197 | digest. */ | ||
198 | void * | ||
199 | MHD_md5_buffer (const char *buffer, size_t len, void *resblock) | ||
200 | { | ||
201 | struct MHD_md5_ctx ctx; | ||
202 | |||
203 | /* Initialize the computation context. */ | ||
204 | MHD_md5_init_ctx (&ctx); | ||
205 | |||
206 | /* Process whole buffer but last len % 64 bytes. */ | ||
207 | MHD_md5_process_bytes (buffer, len, &ctx); | ||
208 | |||
209 | /* Put result in desired memory area. */ | ||
210 | return MHD_md5_finish_ctx (&ctx, resblock); | ||
211 | } | ||
212 | |||
213 | |||
214 | void | ||
215 | MHD_md5_process_bytes (const void *buffer, size_t len, | ||
216 | struct MHD_md5_ctx *ctx) | ||
217 | { | ||
218 | /* When we already have some bits in our internal buffer concatenate | ||
219 | both inputs first. */ | ||
220 | if (ctx->buflen != 0) | ||
221 | { | ||
222 | size_t left_over = ctx->buflen; | ||
223 | size_t add = 128 - left_over > len ? len : 128 - left_over; | ||
224 | |||
225 | memcpy (&((char *) ctx->buffer)[left_over], buffer, add); | ||
226 | ctx->buflen += add; | ||
227 | |||
228 | if (ctx->buflen > 64) | ||
229 | { | ||
230 | MHD_md5_process_block (ctx->buffer, ctx->buflen & ~63, ctx); | ||
231 | |||
232 | ctx->buflen &= 63; | ||
233 | /* The regions in the following copy operation cannot overlap. */ | ||
234 | memcpy (ctx->buffer, | ||
235 | &((char *) ctx->buffer)[(left_over + add) & ~63], | ||
236 | ctx->buflen); | ||
237 | } | ||
238 | |||
239 | buffer = (const char *) buffer + add; | ||
240 | len -= add; | ||
241 | } | ||
242 | |||
243 | /* Process available complete blocks. */ | ||
244 | if (len >= 64) | ||
245 | { | ||
246 | #if !_STRING_ARCH_unaligned | ||
247 | # define alignof(type) offsetof (struct { char c; type x; }, x) | ||
248 | # define UNALIGNED_P(p) (((size_t) p) % alignof (uint32_t) != 0) | ||
249 | if (UNALIGNED_P (buffer)) | ||
250 | while (len > 64) | ||
251 | { | ||
252 | MHD_md5_process_block (memcpy (ctx->buffer, buffer, 64), 64, ctx); | ||
253 | buffer = (const char *) buffer + 64; | ||
254 | len -= 64; | ||
255 | } | ||
256 | else | ||
257 | #endif | ||
258 | { | ||
259 | MHD_md5_process_block (buffer, len & ~63, ctx); | ||
260 | buffer = (const char *) buffer + (len & ~63); | ||
261 | len &= 63; | ||
262 | } | ||
263 | } | ||
264 | |||
265 | /* Move remaining bytes in internal buffer. */ | ||
266 | if (len > 0) | ||
267 | { | ||
268 | size_t left_over = ctx->buflen; | ||
269 | |||
270 | memcpy (&((char *) ctx->buffer)[left_over], buffer, len); | ||
271 | left_over += len; | ||
272 | if (left_over >= 64) | ||
273 | { | ||
274 | MHD_md5_process_block (ctx->buffer, 64, ctx); | ||
275 | left_over -= 64; | ||
276 | memcpy (ctx->buffer, &ctx->buffer[16], left_over); | ||
277 | } | ||
278 | ctx->buflen = left_over; | ||
279 | } | ||
280 | } | ||
281 | |||
282 | |||
283 | /* These are the four functions used in the four steps of the MD5 algorithm | ||
284 | and defined in the RFC 1321. The first function is a little bit optimized | ||
285 | (as found in Colin Plumbs public domain implementation). */ | ||
286 | /* #define FF(b, c, d) ((b & c) | (~b & d)) */ | ||
287 | #define FF(b, c, d) (d ^ (b & (c ^ d))) | ||
288 | #define FG(b, c, d) FF (d, b, c) | ||
289 | #define FH(b, c, d) (b ^ c ^ d) | ||
290 | #define FI(b, c, d) (c ^ (b | ~d)) | ||
291 | |||
292 | /* Process LEN bytes of BUFFER, accumulating context into CTX. | ||
293 | It is assumed that LEN % 64 == 0. */ | ||
294 | |||
295 | void | ||
296 | MHD_md5_process_block (const void *buffer, size_t len, | ||
297 | struct MHD_md5_ctx *ctx) | ||
298 | { | ||
299 | uint32_t correct_words[16]; | ||
300 | const uint32_t *words = buffer; | ||
301 | size_t nwords = len / sizeof (uint32_t); | ||
302 | const uint32_t *endp = words + nwords; | ||
303 | uint32_t A = ctx->A; | ||
304 | uint32_t B = ctx->B; | ||
305 | uint32_t C = ctx->C; | ||
306 | uint32_t D = ctx->D; | ||
307 | |||
308 | /* First increment the byte count. RFC 1321 specifies the possible | ||
309 | length of the file up to 2^64 bits. Here we only compute the | ||
310 | number of bytes. Do a double word increment. */ | ||
311 | ctx->total[0] += len; | ||
312 | if (ctx->total[0] < len) | ||
313 | ++ctx->total[1]; | ||
314 | |||
315 | /* Process all bytes in the buffer with 64 bytes in each round of | ||
316 | the loop. */ | ||
317 | while (words < endp) | ||
318 | { | ||
319 | uint32_t *cwp = correct_words; | ||
320 | uint32_t A_save = A; | ||
321 | uint32_t B_save = B; | ||
322 | uint32_t C_save = C; | ||
323 | uint32_t D_save = D; | ||
324 | |||
325 | /* First round: using the given function, the context and a constant | ||
326 | the next context is computed. Because the algorithms processing | ||
327 | unit is a 32-bit word and it is determined to work on words in | ||
328 | little endian byte order we perhaps have to change the byte order | ||
329 | before the computation. To reduce the work for the next steps | ||
330 | we store the swapped words in the array CORRECT_WORDS. */ | ||
331 | |||
332 | #define OP(a, b, c, d, s, T) \ | ||
333 | do \ | ||
334 | { \ | ||
335 | a += FF (b, c, d) + (*cwp++ = SWAP (*words)) + T; \ | ||
336 | ++words; \ | ||
337 | CYCLIC (a, s); \ | ||
338 | a += b; \ | ||
339 | } \ | ||
340 | while (0) | ||
341 | |||
342 | /* It is unfortunate that C does not provide an operator for | ||
343 | cyclic rotation. Hope the C compiler is smart enough. */ | ||
344 | #define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s))) | ||
345 | |||
346 | /* Before we start, one word to the strange constants. | ||
347 | They are defined in RFC 1321 as | ||
348 | |||
349 | T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64 | ||
350 | |||
351 | Here is an equivalent invocation using Perl: | ||
352 | |||
353 | perl -e 'foreach(1..64){printf "0x%08x\n", int (4294967296 * abs (sin $_))}' | ||
354 | */ | ||
355 | |||
356 | /* Round 1. */ | ||
357 | OP (A, B, C, D, 7, 0xd76aa478); | ||
358 | OP (D, A, B, C, 12, 0xe8c7b756); | ||
359 | OP (C, D, A, B, 17, 0x242070db); | ||
360 | OP (B, C, D, A, 22, 0xc1bdceee); | ||
361 | OP (A, B, C, D, 7, 0xf57c0faf); | ||
362 | OP (D, A, B, C, 12, 0x4787c62a); | ||
363 | OP (C, D, A, B, 17, 0xa8304613); | ||
364 | OP (B, C, D, A, 22, 0xfd469501); | ||
365 | OP (A, B, C, D, 7, 0x698098d8); | ||
366 | OP (D, A, B, C, 12, 0x8b44f7af); | ||
367 | OP (C, D, A, B, 17, 0xffff5bb1); | ||
368 | OP (B, C, D, A, 22, 0x895cd7be); | ||
369 | OP (A, B, C, D, 7, 0x6b901122); | ||
370 | OP (D, A, B, C, 12, 0xfd987193); | ||
371 | OP (C, D, A, B, 17, 0xa679438e); | ||
372 | OP (B, C, D, A, 22, 0x49b40821); | ||
373 | |||
374 | /* For the second to fourth round we have the possibly swapped words | ||
375 | in CORRECT_WORDS. Redefine the macro to take an additional first | ||
376 | argument specifying the function to use. */ | ||
377 | #undef OP | ||
378 | #define OP(f, a, b, c, d, k, s, T) \ | ||
379 | do \ | ||
380 | { \ | ||
381 | a += f (b, c, d) + correct_words[k] + T; \ | ||
382 | CYCLIC (a, s); \ | ||
383 | a += b; \ | ||
384 | } \ | ||
385 | while (0) | ||
386 | |||
387 | /* Round 2. */ | ||
388 | OP (FG, A, B, C, D, 1, 5, 0xf61e2562); | ||
389 | OP (FG, D, A, B, C, 6, 9, 0xc040b340); | ||
390 | OP (FG, C, D, A, B, 11, 14, 0x265e5a51); | ||
391 | OP (FG, B, C, D, A, 0, 20, 0xe9b6c7aa); | ||
392 | OP (FG, A, B, C, D, 5, 5, 0xd62f105d); | ||
393 | OP (FG, D, A, B, C, 10, 9, 0x02441453); | ||
394 | OP (FG, C, D, A, B, 15, 14, 0xd8a1e681); | ||
395 | OP (FG, B, C, D, A, 4, 20, 0xe7d3fbc8); | ||
396 | OP (FG, A, B, C, D, 9, 5, 0x21e1cde6); | ||
397 | OP (FG, D, A, B, C, 14, 9, 0xc33707d6); | ||
398 | OP (FG, C, D, A, B, 3, 14, 0xf4d50d87); | ||
399 | OP (FG, B, C, D, A, 8, 20, 0x455a14ed); | ||
400 | OP (FG, A, B, C, D, 13, 5, 0xa9e3e905); | ||
401 | OP (FG, D, A, B, C, 2, 9, 0xfcefa3f8); | ||
402 | OP (FG, C, D, A, B, 7, 14, 0x676f02d9); | ||
403 | OP (FG, B, C, D, A, 12, 20, 0x8d2a4c8a); | ||
404 | |||
405 | /* Round 3. */ | ||
406 | OP (FH, A, B, C, D, 5, 4, 0xfffa3942); | ||
407 | OP (FH, D, A, B, C, 8, 11, 0x8771f681); | ||
408 | OP (FH, C, D, A, B, 11, 16, 0x6d9d6122); | ||
409 | OP (FH, B, C, D, A, 14, 23, 0xfde5380c); | ||
410 | OP (FH, A, B, C, D, 1, 4, 0xa4beea44); | ||
411 | OP (FH, D, A, B, C, 4, 11, 0x4bdecfa9); | ||
412 | OP (FH, C, D, A, B, 7, 16, 0xf6bb4b60); | ||
413 | OP (FH, B, C, D, A, 10, 23, 0xbebfbc70); | ||
414 | OP (FH, A, B, C, D, 13, 4, 0x289b7ec6); | ||
415 | OP (FH, D, A, B, C, 0, 11, 0xeaa127fa); | ||
416 | OP (FH, C, D, A, B, 3, 16, 0xd4ef3085); | ||
417 | OP (FH, B, C, D, A, 6, 23, 0x04881d05); | ||
418 | OP (FH, A, B, C, D, 9, 4, 0xd9d4d039); | ||
419 | OP (FH, D, A, B, C, 12, 11, 0xe6db99e5); | ||
420 | OP (FH, C, D, A, B, 15, 16, 0x1fa27cf8); | ||
421 | OP (FH, B, C, D, A, 2, 23, 0xc4ac5665); | ||
422 | |||
423 | /* Round 4. */ | ||
424 | OP (FI, A, B, C, D, 0, 6, 0xf4292244); | ||
425 | OP (FI, D, A, B, C, 7, 10, 0x432aff97); | ||
426 | OP (FI, C, D, A, B, 14, 15, 0xab9423a7); | ||
427 | OP (FI, B, C, D, A, 5, 21, 0xfc93a039); | ||
428 | OP (FI, A, B, C, D, 12, 6, 0x655b59c3); | ||
429 | OP (FI, D, A, B, C, 3, 10, 0x8f0ccc92); | ||
430 | OP (FI, C, D, A, B, 10, 15, 0xffeff47d); | ||
431 | OP (FI, B, C, D, A, 1, 21, 0x85845dd1); | ||
432 | OP (FI, A, B, C, D, 8, 6, 0x6fa87e4f); | ||
433 | OP (FI, D, A, B, C, 15, 10, 0xfe2ce6e0); | ||
434 | OP (FI, C, D, A, B, 6, 15, 0xa3014314); | ||
435 | OP (FI, B, C, D, A, 13, 21, 0x4e0811a1); | ||
436 | OP (FI, A, B, C, D, 4, 6, 0xf7537e82); | ||
437 | OP (FI, D, A, B, C, 11, 10, 0xbd3af235); | ||
438 | OP (FI, C, D, A, B, 2, 15, 0x2ad7d2bb); | ||
439 | OP (FI, B, C, D, A, 9, 21, 0xeb86d391); | ||
440 | |||
441 | /* Add the starting values of the context. */ | ||
442 | A += A_save; | ||
443 | B += B_save; | ||
444 | C += C_save; | ||
445 | D += D_save; | ||
446 | } | ||
447 | |||
448 | /* Put checksum in context given as argument. */ | ||
449 | ctx->A = A; | ||
450 | ctx->B = B; | ||
451 | ctx->C = C; | ||
452 | ctx->D = D; | ||
453 | } | ||