Mercurial > hg > nginx
annotate src/core/ngx_md5.c @ 9274:46ecad404a29 default tip
Mail: reset imap tag to empty after authentication attempt.
We need to reset the imap tag to empty after an authentication attempt
completes, otherwise if the next line parsed is incomplete with no tag
(e.g. empty line) then we use the "tag" from the previous buffer which
is now definitely wrong and has been partially overwritten with the most
recently read data (e.g. CRLF).
An example before this patch:
S: * OK IMAP4 ready
C: foobar login a b
S: foobar NO Incorrect username or password.
C:
S:
S: obar BAD invalid command
Then with this patch:
S: * OK IMAP4 ready
C: foobar login a b
S: foobar NO Incorrect username or password.
C:
S: * BAD invalid command
| author | Rob Mueller <robm@fastmailteam.com> |
|---|---|
| date | Wed, 15 May 2024 10:06:00 +0300 |
| parents | 9eefb38f0005 |
| children |
| 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 */ | |
| 7 | |
| 8 | |
| 9 #include <ngx_config.h> | |
| 10 #include <ngx_core.h> | |
| 11 #include <ngx_md5.h> | |
| 12 | |
| 13 | |
| 14 static const u_char *ngx_md5_body(ngx_md5_t *ctx, const u_char *data, | |
| 15 size_t size); | |
| 16 | |
| 17 | |
| 18 void | |
| 19 ngx_md5_init(ngx_md5_t *ctx) | |
| 20 { | |
| 21 ctx->a = 0x67452301; | |
| 22 ctx->b = 0xefcdab89; | |
| 23 ctx->c = 0x98badcfe; | |
| 24 ctx->d = 0x10325476; | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
25 |
| 3895 | 26 ctx->bytes = 0; |
| 27 } | |
| 28 | |
| 29 | |
| 30 void | |
|
3927
38e6f45c5e3d
make built-in ngx_md5_update() interface consistent with other implemenations
Igor Sysoev <igor@sysoev.ru>
parents:
3900
diff
changeset
|
31 ngx_md5_update(ngx_md5_t *ctx, const void *data, size_t size) |
| 3895 | 32 { |
| 33 size_t used, free; | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
34 |
| 3941 | 35 used = (size_t) (ctx->bytes & 0x3f); |
| 3895 | 36 ctx->bytes += size; |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
37 |
| 3895 | 38 if (used) { |
| 39 free = 64 - used; | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
40 |
| 3895 | 41 if (size < free) { |
| 42 ngx_memcpy(&ctx->buffer[used], data, size); | |
| 43 return; | |
| 44 } | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
45 |
|
4279
21167183825d
Reverted incorrect change in internal md5 (part of r3928).
Maxim Dounin <mdounin@mdounin.ru>
parents:
3941
diff
changeset
|
46 ngx_memcpy(&ctx->buffer[used], data, free); |
|
21167183825d
Reverted incorrect change in internal md5 (part of r3928).
Maxim Dounin <mdounin@mdounin.ru>
parents:
3941
diff
changeset
|
47 data = (u_char *) data + free; |
| 3895 | 48 size -= free; |
| 49 (void) ngx_md5_body(ctx, ctx->buffer, 64); | |
| 50 } | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
51 |
| 3895 | 52 if (size >= 64) { |
| 53 data = ngx_md5_body(ctx, data, size & ~(size_t) 0x3f); | |
| 54 size &= 0x3f; | |
| 55 } | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
56 |
| 3895 | 57 ngx_memcpy(ctx->buffer, data, size); |
| 58 } | |
| 59 | |
| 60 | |
| 61 void | |
| 62 ngx_md5_final(u_char result[16], ngx_md5_t *ctx) | |
| 63 { | |
| 64 size_t used, free; | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
65 |
| 3941 | 66 used = (size_t) (ctx->bytes & 0x3f); |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
67 |
| 3895 | 68 ctx->buffer[used++] = 0x80; |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
69 |
| 3895 | 70 free = 64 - used; |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
71 |
| 3895 | 72 if (free < 8) { |
| 73 ngx_memzero(&ctx->buffer[used], free); | |
| 74 (void) ngx_md5_body(ctx, ctx->buffer, 64); | |
| 75 used = 0; | |
| 76 free = 64; | |
| 77 } | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
78 |
| 3895 | 79 ngx_memzero(&ctx->buffer[used], free - 8); |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
80 |
| 3895 | 81 ctx->bytes <<= 3; |
| 3941 | 82 ctx->buffer[56] = (u_char) ctx->bytes; |
| 83 ctx->buffer[57] = (u_char) (ctx->bytes >> 8); | |
| 84 ctx->buffer[58] = (u_char) (ctx->bytes >> 16); | |
| 85 ctx->buffer[59] = (u_char) (ctx->bytes >> 24); | |
| 86 ctx->buffer[60] = (u_char) (ctx->bytes >> 32); | |
| 87 ctx->buffer[61] = (u_char) (ctx->bytes >> 40); | |
| 88 ctx->buffer[62] = (u_char) (ctx->bytes >> 48); | |
| 89 ctx->buffer[63] = (u_char) (ctx->bytes >> 56); | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
90 |
| 3895 | 91 (void) ngx_md5_body(ctx, ctx->buffer, 64); |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
92 |
| 3941 | 93 result[0] = (u_char) ctx->a; |
| 94 result[1] = (u_char) (ctx->a >> 8); | |
| 95 result[2] = (u_char) (ctx->a >> 16); | |
| 96 result[3] = (u_char) (ctx->a >> 24); | |
| 97 result[4] = (u_char) ctx->b; | |
| 98 result[5] = (u_char) (ctx->b >> 8); | |
| 99 result[6] = (u_char) (ctx->b >> 16); | |
| 100 result[7] = (u_char) (ctx->b >> 24); | |
| 101 result[8] = (u_char) ctx->c; | |
| 102 result[9] = (u_char) (ctx->c >> 8); | |
| 103 result[10] = (u_char) (ctx->c >> 16); | |
| 104 result[11] = (u_char) (ctx->c >> 24); | |
| 105 result[12] = (u_char) ctx->d; | |
| 106 result[13] = (u_char) (ctx->d >> 8); | |
| 107 result[14] = (u_char) (ctx->d >> 16); | |
| 108 result[15] = (u_char) (ctx->d >> 24); | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
109 |
| 3895 | 110 ngx_memzero(ctx, sizeof(*ctx)); |
| 111 } | |
| 112 | |
| 113 | |
| 114 /* | |
| 115 * The basic MD5 functions. | |
| 116 * | |
| 117 * F and G are optimized compared to their RFC 1321 definitions for | |
| 118 * architectures that lack an AND-NOT instruction, just like in | |
| 119 * Colin Plumb's implementation. | |
| 120 */ | |
| 121 | |
| 122 #define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z)))) | |
| 123 #define G(x, y, z) ((y) ^ ((z) & ((x) ^ (y)))) | |
| 124 #define H(x, y, z) ((x) ^ (y) ^ (z)) | |
| 125 #define I(x, y, z) ((y) ^ ((x) | ~(z))) | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
126 |
| 3895 | 127 /* |
| 128 * The MD5 transformation for all four rounds. | |
| 129 */ | |
| 130 | |
| 131 #define STEP(f, a, b, c, d, x, t, s) \ | |
| 132 (a) += f((b), (c), (d)) + (x) + (t); \ | |
| 133 (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \ | |
| 134 (a) += (b) | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
135 |
| 3895 | 136 /* |
| 137 * SET() reads 4 input bytes in little-endian byte order and stores them | |
| 138 * in a properly aligned word in host byte order. | |
| 139 * | |
| 140 * The check for little-endian architectures that tolerate unaligned | |
| 141 * memory accesses is just an optimization. Nothing will break if it | |
| 142 * does not work. | |
| 143 */ | |
| 144 | |
| 145 #if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) | |
| 146 | |
| 147 #define SET(n) (*(uint32_t *) &p[n * 4]) | |
| 148 #define GET(n) (*(uint32_t *) &p[n * 4]) | |
| 149 | |
| 150 #else | |
| 151 | |
| 152 #define SET(n) \ | |
| 153 (block[n] = \ | |
| 154 (uint32_t) p[n * 4] | \ | |
| 155 ((uint32_t) p[n * 4 + 1] << 8) | \ | |
| 156 ((uint32_t) p[n * 4 + 2] << 16) | \ | |
| 157 ((uint32_t) p[n * 4 + 3] << 24)) | |
| 158 | |
| 159 #define GET(n) block[n] | |
| 160 | |
| 161 #endif | |
| 162 | |
| 163 | |
| 164 /* | |
| 165 * This processes one or more 64-byte data blocks, but does not update | |
| 166 * the bit counters. There are no alignment requirements. | |
| 167 */ | |
| 168 | |
| 169 static const u_char * | |
| 170 ngx_md5_body(ngx_md5_t *ctx, const u_char *data, size_t size) | |
| 171 { | |
| 172 uint32_t a, b, c, d; | |
| 173 uint32_t saved_a, saved_b, saved_c, saved_d; | |
| 174 const u_char *p; | |
| 175 #if !(NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) | |
| 176 uint32_t block[16]; | |
| 177 #endif | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
178 |
| 3895 | 179 p = data; |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
180 |
| 3895 | 181 a = ctx->a; |
| 182 b = ctx->b; | |
| 183 c = ctx->c; | |
| 184 d = ctx->d; | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
185 |
| 3895 | 186 do { |
| 187 saved_a = a; | |
| 188 saved_b = b; | |
| 189 saved_c = c; | |
| 190 saved_d = d; | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
191 |
| 3895 | 192 /* Round 1 */ |
| 193 | |
| 194 STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7); | |
| 195 STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12); | |
| 196 STEP(F, c, d, a, b, SET(2), 0x242070db, 17); | |
| 197 STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22); | |
| 198 STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7); | |
| 199 STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12); | |
| 200 STEP(F, c, d, a, b, SET(6), 0xa8304613, 17); | |
| 201 STEP(F, b, c, d, a, SET(7), 0xfd469501, 22); | |
| 202 STEP(F, a, b, c, d, SET(8), 0x698098d8, 7); | |
| 203 STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12); | |
| 204 STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17); | |
| 205 STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22); | |
| 206 STEP(F, a, b, c, d, SET(12), 0x6b901122, 7); | |
| 207 STEP(F, d, a, b, c, SET(13), 0xfd987193, 12); | |
| 208 STEP(F, c, d, a, b, SET(14), 0xa679438e, 17); | |
| 209 STEP(F, b, c, d, a, SET(15), 0x49b40821, 22); | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
210 |
| 3895 | 211 /* Round 2 */ |
| 212 | |
| 213 STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5); | |
| 214 STEP(G, d, a, b, c, GET(6), 0xc040b340, 9); | |
| 215 STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14); | |
| 216 STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20); | |
| 217 STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5); | |
| 218 STEP(G, d, a, b, c, GET(10), 0x02441453, 9); | |
| 219 STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14); | |
| 220 STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20); | |
| 221 STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5); | |
| 222 STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9); | |
| 223 STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14); | |
| 224 STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20); | |
| 225 STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5); | |
| 226 STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9); | |
| 227 STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14); | |
| 228 STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20); | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
229 |
| 3895 | 230 /* Round 3 */ |
| 231 | |
| 232 STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4); | |
| 233 STEP(H, d, a, b, c, GET(8), 0x8771f681, 11); | |
| 234 STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16); | |
| 235 STEP(H, b, c, d, a, GET(14), 0xfde5380c, 23); | |
| 236 STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4); | |
| 237 STEP(H, d, a, b, c, GET(4), 0x4bdecfa9, 11); | |
| 238 STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16); | |
| 239 STEP(H, b, c, d, a, GET(10), 0xbebfbc70, 23); | |
| 240 STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4); | |
| 241 STEP(H, d, a, b, c, GET(0), 0xeaa127fa, 11); | |
| 242 STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16); | |
| 243 STEP(H, b, c, d, a, GET(6), 0x04881d05, 23); | |
| 244 STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4); | |
| 245 STEP(H, d, a, b, c, GET(12), 0xe6db99e5, 11); | |
| 246 STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16); | |
| 247 STEP(H, b, c, d, a, GET(2), 0xc4ac5665, 23); | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
248 |
| 3895 | 249 /* Round 4 */ |
| 250 | |
| 251 STEP(I, a, b, c, d, GET(0), 0xf4292244, 6); | |
| 252 STEP(I, d, a, b, c, GET(7), 0x432aff97, 10); | |
| 253 STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15); | |
| 254 STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21); | |
| 255 STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6); | |
| 256 STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10); | |
| 257 STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15); | |
| 258 STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21); | |
| 259 STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6); | |
| 260 STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10); | |
| 261 STEP(I, c, d, a, b, GET(6), 0xa3014314, 15); | |
| 262 STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21); | |
| 263 STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6); | |
| 264 STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10); | |
| 265 STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15); | |
| 266 STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21); | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
267 |
| 3895 | 268 a += saved_a; |
| 269 b += saved_b; | |
| 270 c += saved_c; | |
| 271 d += saved_d; | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
272 |
| 3895 | 273 p += 64; |
| 274 | |
| 275 } while (size -= 64); | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
276 |
| 3895 | 277 ctx->a = a; |
| 278 ctx->b = b; | |
| 279 ctx->c = c; | |
| 280 ctx->d = d; | |
|
3900
4d5754e2f220
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
3895
diff
changeset
|
281 |
| 3895 | 282 return p; |
| 283 } |