Mercurial > hg > nginx
annotate src/core/ngx_md5.c @ 5360:3d2d3e1cf427
Win32: MinGW GCC compatibility.
Several warnings silenced, notably (ngx_socket_t) -1 is now checked
on socket operations instead of -1, as ngx_socket_t is unsigned on win32
and gcc complains on comparison.
With this patch, it's now possible to compile nginx using mingw gcc,
with options we normally compile on win32.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Wed, 04 Sep 2013 20:48:28 +0400 |
| parents | 21167183825d |
| children | 9eefb38f0005 |
| rev | line source |
|---|---|
| 3895 | 1 |
| 2 /* | |
| 3 * An internal implementation, based on Alexander Peslyak's | |
| 4 * public domain implementation: | |
| 5 * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5 | |
| 6 * It is not expected to be optimal and is used only | |
| 7 * if no MD5 implementation was found in system. | |
| 8 */ | |
| 9 | |
| 10 | |
| 11 #include <ngx_config.h> | |
| 12 #include <ngx_core.h> | |
| 13 #include <ngx_md5.h> | |
| 14 | |
| 15 | |
| 16 #if !(NGX_HAVE_MD5) | |
| 17 | |
| 18 static const u_char *ngx_md5_body(ngx_md5_t *ctx, const u_char *data, | |
| 19 size_t size); | |
| 20 | |
| 21 | |
| 22 void | |
| 23 ngx_md5_init(ngx_md5_t *ctx) | |
| 24 { | |
| 25 ctx->a = 0x67452301; | |
| 26 ctx->b = 0xefcdab89; | |
| 27 ctx->c = 0x98badcfe; | |
| 28 ctx->d = 0x10325476; | |
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29 |
| 3895 | 30 ctx->bytes = 0; |
| 31 } | |
| 32 | |
| 33 | |
| 34 void | |
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35 ngx_md5_update(ngx_md5_t *ctx, const void *data, size_t size) |
| 3895 | 36 { |
| 37 size_t used, free; | |
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38 |
| 3941 | 39 used = (size_t) (ctx->bytes & 0x3f); |
| 3895 | 40 ctx->bytes += size; |
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41 |
| 3895 | 42 if (used) { |
| 43 free = 64 - used; | |
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44 |
| 3895 | 45 if (size < free) { |
| 46 ngx_memcpy(&ctx->buffer[used], data, size); | |
| 47 return; | |
| 48 } | |
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49 |
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50 ngx_memcpy(&ctx->buffer[used], data, free); |
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51 data = (u_char *) data + free; |
| 3895 | 52 size -= free; |
| 53 (void) ngx_md5_body(ctx, ctx->buffer, 64); | |
| 54 } | |
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55 |
| 3895 | 56 if (size >= 64) { |
| 57 data = ngx_md5_body(ctx, data, size & ~(size_t) 0x3f); | |
| 58 size &= 0x3f; | |
| 59 } | |
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60 |
| 3895 | 61 ngx_memcpy(ctx->buffer, data, size); |
| 62 } | |
| 63 | |
| 64 | |
| 65 void | |
| 66 ngx_md5_final(u_char result[16], ngx_md5_t *ctx) | |
| 67 { | |
| 68 size_t used, free; | |
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69 |
| 3941 | 70 used = (size_t) (ctx->bytes & 0x3f); |
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71 |
| 3895 | 72 ctx->buffer[used++] = 0x80; |
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73 |
| 3895 | 74 free = 64 - used; |
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75 |
| 3895 | 76 if (free < 8) { |
| 77 ngx_memzero(&ctx->buffer[used], free); | |
| 78 (void) ngx_md5_body(ctx, ctx->buffer, 64); | |
| 79 used = 0; | |
| 80 free = 64; | |
| 81 } | |
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82 |
| 3895 | 83 ngx_memzero(&ctx->buffer[used], free - 8); |
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84 |
| 3895 | 85 ctx->bytes <<= 3; |
| 3941 | 86 ctx->buffer[56] = (u_char) ctx->bytes; |
| 87 ctx->buffer[57] = (u_char) (ctx->bytes >> 8); | |
| 88 ctx->buffer[58] = (u_char) (ctx->bytes >> 16); | |
| 89 ctx->buffer[59] = (u_char) (ctx->bytes >> 24); | |
| 90 ctx->buffer[60] = (u_char) (ctx->bytes >> 32); | |
| 91 ctx->buffer[61] = (u_char) (ctx->bytes >> 40); | |
| 92 ctx->buffer[62] = (u_char) (ctx->bytes >> 48); | |
| 93 ctx->buffer[63] = (u_char) (ctx->bytes >> 56); | |
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94 |
| 3895 | 95 (void) ngx_md5_body(ctx, ctx->buffer, 64); |
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96 |
| 3941 | 97 result[0] = (u_char) ctx->a; |
| 98 result[1] = (u_char) (ctx->a >> 8); | |
| 99 result[2] = (u_char) (ctx->a >> 16); | |
| 100 result[3] = (u_char) (ctx->a >> 24); | |
| 101 result[4] = (u_char) ctx->b; | |
| 102 result[5] = (u_char) (ctx->b >> 8); | |
| 103 result[6] = (u_char) (ctx->b >> 16); | |
| 104 result[7] = (u_char) (ctx->b >> 24); | |
| 105 result[8] = (u_char) ctx->c; | |
| 106 result[9] = (u_char) (ctx->c >> 8); | |
| 107 result[10] = (u_char) (ctx->c >> 16); | |
| 108 result[11] = (u_char) (ctx->c >> 24); | |
| 109 result[12] = (u_char) ctx->d; | |
| 110 result[13] = (u_char) (ctx->d >> 8); | |
| 111 result[14] = (u_char) (ctx->d >> 16); | |
| 112 result[15] = (u_char) (ctx->d >> 24); | |
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113 |
| 3895 | 114 ngx_memzero(ctx, sizeof(*ctx)); |
| 115 } | |
| 116 | |
| 117 | |
| 118 /* | |
| 119 * The basic MD5 functions. | |
| 120 * | |
| 121 * F and G are optimized compared to their RFC 1321 definitions for | |
| 122 * architectures that lack an AND-NOT instruction, just like in | |
| 123 * Colin Plumb's implementation. | |
| 124 */ | |
| 125 | |
| 126 #define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z)))) | |
| 127 #define G(x, y, z) ((y) ^ ((z) & ((x) ^ (y)))) | |
| 128 #define H(x, y, z) ((x) ^ (y) ^ (z)) | |
| 129 #define I(x, y, z) ((y) ^ ((x) | ~(z))) | |
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130 |
| 3895 | 131 /* |
| 132 * The MD5 transformation for all four rounds. | |
| 133 */ | |
| 134 | |
| 135 #define STEP(f, a, b, c, d, x, t, s) \ | |
| 136 (a) += f((b), (c), (d)) + (x) + (t); \ | |
| 137 (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \ | |
| 138 (a) += (b) | |
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139 |
| 3895 | 140 /* |
| 141 * SET() reads 4 input bytes in little-endian byte order and stores them | |
| 142 * in a properly aligned word in host byte order. | |
| 143 * | |
| 144 * The check for little-endian architectures that tolerate unaligned | |
| 145 * memory accesses is just an optimization. Nothing will break if it | |
| 146 * does not work. | |
| 147 */ | |
| 148 | |
| 149 #if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) | |
| 150 | |
| 151 #define SET(n) (*(uint32_t *) &p[n * 4]) | |
| 152 #define GET(n) (*(uint32_t *) &p[n * 4]) | |
| 153 | |
| 154 #else | |
| 155 | |
| 156 #define SET(n) \ | |
| 157 (block[n] = \ | |
| 158 (uint32_t) p[n * 4] | \ | |
| 159 ((uint32_t) p[n * 4 + 1] << 8) | \ | |
| 160 ((uint32_t) p[n * 4 + 2] << 16) | \ | |
| 161 ((uint32_t) p[n * 4 + 3] << 24)) | |
| 162 | |
| 163 #define GET(n) block[n] | |
| 164 | |
| 165 #endif | |
| 166 | |
| 167 | |
| 168 /* | |
| 169 * This processes one or more 64-byte data blocks, but does not update | |
| 170 * the bit counters. There are no alignment requirements. | |
| 171 */ | |
| 172 | |
| 173 static const u_char * | |
| 174 ngx_md5_body(ngx_md5_t *ctx, const u_char *data, size_t size) | |
| 175 { | |
| 176 uint32_t a, b, c, d; | |
| 177 uint32_t saved_a, saved_b, saved_c, saved_d; | |
| 178 const u_char *p; | |
| 179 #if !(NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) | |
| 180 uint32_t block[16]; | |
| 181 #endif | |
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182 |
| 3895 | 183 p = data; |
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184 |
| 3895 | 185 a = ctx->a; |
| 186 b = ctx->b; | |
| 187 c = ctx->c; | |
| 188 d = ctx->d; | |
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189 |
| 3895 | 190 do { |
| 191 saved_a = a; | |
| 192 saved_b = b; | |
| 193 saved_c = c; | |
| 194 saved_d = d; | |
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195 |
| 3895 | 196 /* Round 1 */ |
| 197 | |
| 198 STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7); | |
| 199 STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12); | |
| 200 STEP(F, c, d, a, b, SET(2), 0x242070db, 17); | |
| 201 STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22); | |
| 202 STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7); | |
| 203 STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12); | |
| 204 STEP(F, c, d, a, b, SET(6), 0xa8304613, 17); | |
| 205 STEP(F, b, c, d, a, SET(7), 0xfd469501, 22); | |
| 206 STEP(F, a, b, c, d, SET(8), 0x698098d8, 7); | |
| 207 STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12); | |
| 208 STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17); | |
| 209 STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22); | |
| 210 STEP(F, a, b, c, d, SET(12), 0x6b901122, 7); | |
| 211 STEP(F, d, a, b, c, SET(13), 0xfd987193, 12); | |
| 212 STEP(F, c, d, a, b, SET(14), 0xa679438e, 17); | |
| 213 STEP(F, b, c, d, a, SET(15), 0x49b40821, 22); | |
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214 |
| 3895 | 215 /* Round 2 */ |
| 216 | |
| 217 STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5); | |
| 218 STEP(G, d, a, b, c, GET(6), 0xc040b340, 9); | |
| 219 STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14); | |
| 220 STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20); | |
| 221 STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5); | |
| 222 STEP(G, d, a, b, c, GET(10), 0x02441453, 9); | |
| 223 STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14); | |
| 224 STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20); | |
| 225 STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5); | |
| 226 STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9); | |
| 227 STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14); | |
| 228 STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20); | |
| 229 STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5); | |
| 230 STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9); | |
| 231 STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14); | |
| 232 STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20); | |
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233 |
| 3895 | 234 /* Round 3 */ |
| 235 | |
| 236 STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4); | |
| 237 STEP(H, d, a, b, c, GET(8), 0x8771f681, 11); | |
| 238 STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16); | |
| 239 STEP(H, b, c, d, a, GET(14), 0xfde5380c, 23); | |
| 240 STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4); | |
| 241 STEP(H, d, a, b, c, GET(4), 0x4bdecfa9, 11); | |
| 242 STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16); | |
| 243 STEP(H, b, c, d, a, GET(10), 0xbebfbc70, 23); | |
| 244 STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4); | |
| 245 STEP(H, d, a, b, c, GET(0), 0xeaa127fa, 11); | |
| 246 STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16); | |
| 247 STEP(H, b, c, d, a, GET(6), 0x04881d05, 23); | |
| 248 STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4); | |
| 249 STEP(H, d, a, b, c, GET(12), 0xe6db99e5, 11); | |
| 250 STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16); | |
| 251 STEP(H, b, c, d, a, GET(2), 0xc4ac5665, 23); | |
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252 |
| 3895 | 253 /* Round 4 */ |
| 254 | |
| 255 STEP(I, a, b, c, d, GET(0), 0xf4292244, 6); | |
| 256 STEP(I, d, a, b, c, GET(7), 0x432aff97, 10); | |
| 257 STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15); | |
| 258 STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21); | |
| 259 STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6); | |
| 260 STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10); | |
| 261 STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15); | |
| 262 STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21); | |
| 263 STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6); | |
| 264 STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10); | |
| 265 STEP(I, c, d, a, b, GET(6), 0xa3014314, 15); | |
| 266 STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21); | |
| 267 STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6); | |
| 268 STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10); | |
| 269 STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15); | |
| 270 STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21); | |
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271 |
| 3895 | 272 a += saved_a; |
| 273 b += saved_b; | |
| 274 c += saved_c; | |
| 275 d += saved_d; | |
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276 |
| 3895 | 277 p += 64; |
| 278 | |
| 279 } while (size -= 64); | |
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280 |
| 3895 | 281 ctx->a = a; |
| 282 ctx->b = b; | |
| 283 ctx->c = c; | |
| 284 ctx->d = d; | |
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285 |
| 3895 | 286 return p; |
| 287 } | |
| 288 | |
| 289 #endif |