Mercurial > hg > nginx-quic
annotate src/core/ngx_sha1.c @ 6876:a5d1b1383dea
Upstream: fixed cache corruption and socket leaks with aio_write.
The ngx_event_pipe() function wasn't called on write events with
wev->delayed set. As a result, threaded writing results weren't
properly collected in ngx_event_pipe_write_to_downstream() when a
write event was triggered for a completed write.
Further, this wasn't detected, as p->aio was reset by a thread completion
handler, and results were later collected in ngx_event_pipe_read_upstream()
instead of scheduling a new write of additional data. If this happened
on the last reading from an upstream, last part of the response was never
written to the cache file.
Similar problems might also happen in case of timeouts when writing to
client, as this also results in ngx_event_pipe() not being called on write
events. In this scenario socket leaks were observed.
Fix is to check if p->writing is set in ngx_event_pipe_read_upstream(), and
therefore collect results of previous write operations in case of read events
as well, similar to how we do so in ngx_event_pipe_write_downstream().
This is enough to fix the wev->delayed case. Additionally, we now call
ngx_event_pipe() from ngx_http_upstream_process_request() if there are
uncollected write operations (p->writing and !p->aio). This also fixes
the wev->timedout case.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Fri, 20 Jan 2017 21:14:19 +0300 |
parents | 9eefb38f0005 |
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rev | line source |
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6586
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1 |
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2 /* |
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3 * Copyright (C) Maxim Dounin |
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4 * Copyright (C) Nginx, Inc. |
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5 * |
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6 * An internal SHA1 implementation. |
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7 */ |
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8 |
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9 |
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10 #include <ngx_config.h> |
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11 #include <ngx_core.h> |
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12 #include <ngx_sha1.h> |
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13 |
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14 |
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15 static const u_char *ngx_sha1_body(ngx_sha1_t *ctx, const u_char *data, |
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16 size_t size); |
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17 |
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18 |
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19 void |
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20 ngx_sha1_init(ngx_sha1_t *ctx) |
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21 { |
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22 ctx->a = 0x67452301; |
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23 ctx->b = 0xefcdab89; |
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24 ctx->c = 0x98badcfe; |
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25 ctx->d = 0x10325476; |
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26 ctx->e = 0xc3d2e1f0; |
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27 |
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28 ctx->bytes = 0; |
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29 } |
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30 |
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31 |
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32 void |
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33 ngx_sha1_update(ngx_sha1_t *ctx, const void *data, size_t size) |
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34 { |
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35 size_t used, free; |
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36 |
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37 used = (size_t) (ctx->bytes & 0x3f); |
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38 ctx->bytes += size; |
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39 |
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40 if (used) { |
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41 free = 64 - used; |
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42 |
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43 if (size < free) { |
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44 ngx_memcpy(&ctx->buffer[used], data, size); |
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45 return; |
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46 } |
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47 |
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48 ngx_memcpy(&ctx->buffer[used], data, free); |
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49 data = (u_char *) data + free; |
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50 size -= free; |
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51 (void) ngx_sha1_body(ctx, ctx->buffer, 64); |
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52 } |
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53 |
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54 if (size >= 64) { |
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55 data = ngx_sha1_body(ctx, data, size & ~(size_t) 0x3f); |
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56 size &= 0x3f; |
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57 } |
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58 |
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59 ngx_memcpy(ctx->buffer, data, size); |
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60 } |
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61 |
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62 |
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63 void |
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64 ngx_sha1_final(u_char result[20], ngx_sha1_t *ctx) |
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65 { |
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66 size_t used, free; |
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67 |
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68 used = (size_t) (ctx->bytes & 0x3f); |
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69 |
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70 ctx->buffer[used++] = 0x80; |
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71 |
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72 free = 64 - used; |
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73 |
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74 if (free < 8) { |
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75 ngx_memzero(&ctx->buffer[used], free); |
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76 (void) ngx_sha1_body(ctx, ctx->buffer, 64); |
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77 used = 0; |
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78 free = 64; |
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79 } |
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80 |
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81 ngx_memzero(&ctx->buffer[used], free - 8); |
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82 |
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83 ctx->bytes <<= 3; |
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84 ctx->buffer[56] = (u_char) (ctx->bytes >> 56); |
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85 ctx->buffer[57] = (u_char) (ctx->bytes >> 48); |
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86 ctx->buffer[58] = (u_char) (ctx->bytes >> 40); |
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87 ctx->buffer[59] = (u_char) (ctx->bytes >> 32); |
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88 ctx->buffer[60] = (u_char) (ctx->bytes >> 24); |
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89 ctx->buffer[61] = (u_char) (ctx->bytes >> 16); |
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90 ctx->buffer[62] = (u_char) (ctx->bytes >> 8); |
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91 ctx->buffer[63] = (u_char) ctx->bytes; |
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92 |
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93 (void) ngx_sha1_body(ctx, ctx->buffer, 64); |
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94 |
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95 result[0] = (u_char) (ctx->a >> 24); |
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96 result[1] = (u_char) (ctx->a >> 16); |
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97 result[2] = (u_char) (ctx->a >> 8); |
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98 result[3] = (u_char) ctx->a; |
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99 result[4] = (u_char) (ctx->b >> 24); |
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100 result[5] = (u_char) (ctx->b >> 16); |
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101 result[6] = (u_char) (ctx->b >> 8); |
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102 result[7] = (u_char) ctx->b; |
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103 result[8] = (u_char) (ctx->c >> 24); |
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104 result[9] = (u_char) (ctx->c >> 16); |
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105 result[10] = (u_char) (ctx->c >> 8); |
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106 result[11] = (u_char) ctx->c; |
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107 result[12] = (u_char) (ctx->d >> 24); |
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108 result[13] = (u_char) (ctx->d >> 16); |
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109 result[14] = (u_char) (ctx->d >> 8); |
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110 result[15] = (u_char) ctx->d; |
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111 result[16] = (u_char) (ctx->e >> 24); |
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112 result[17] = (u_char) (ctx->e >> 16); |
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113 result[18] = (u_char) (ctx->e >> 8); |
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114 result[19] = (u_char) ctx->e; |
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115 |
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116 ngx_memzero(ctx, sizeof(*ctx)); |
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117 } |
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118 |
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119 |
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120 /* |
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121 * Helper functions. |
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122 */ |
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123 |
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124 #define ROTATE(bits, word) (((word) << (bits)) | ((word) >> (32 - (bits)))) |
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125 |
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126 #define F1(b, c, d) (((b) & (c)) | ((~(b)) & (d))) |
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127 #define F2(b, c, d) ((b) ^ (c) ^ (d)) |
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128 #define F3(b, c, d) (((b) & (c)) | ((b) & (d)) | ((c) & (d))) |
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129 |
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130 #define STEP(f, a, b, c, d, e, w, t) \ |
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131 temp = ROTATE(5, (a)) + f((b), (c), (d)) + (e) + (w) + (t); \ |
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132 (e) = (d); \ |
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133 (d) = (c); \ |
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An internal SHA1 implementation.
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134 (c) = ROTATE(30, (b)); \ |
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An internal SHA1 implementation.
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135 (b) = (a); \ |
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136 (a) = temp; |
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137 |
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138 |
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An internal SHA1 implementation.
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139 /* |
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140 * GET() reads 4 input bytes in big-endian byte order and returns |
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An internal SHA1 implementation.
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141 * them as uint32_t. |
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142 */ |
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143 |
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144 #define GET(n) \ |
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145 ((uint32_t) p[n * 4 + 3] | \ |
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146 ((uint32_t) p[n * 4 + 2] << 8) | \ |
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147 ((uint32_t) p[n * 4 + 1] << 16) | \ |
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148 ((uint32_t) p[n * 4] << 24)) |
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149 |
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150 |
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An internal SHA1 implementation.
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151 /* |
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152 * This processes one or more 64-byte data blocks, but does not update |
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153 * the bit counters. There are no alignment requirements. |
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154 */ |
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155 |
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156 static const u_char * |
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157 ngx_sha1_body(ngx_sha1_t *ctx, const u_char *data, size_t size) |
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An internal SHA1 implementation.
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158 { |
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An internal SHA1 implementation.
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159 uint32_t a, b, c, d, e, temp; |
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160 uint32_t saved_a, saved_b, saved_c, saved_d, saved_e; |
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161 uint32_t words[80]; |
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162 ngx_uint_t i; |
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163 const u_char *p; |
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164 |
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165 p = data; |
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166 |
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167 a = ctx->a; |
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An internal SHA1 implementation.
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168 b = ctx->b; |
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An internal SHA1 implementation.
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169 c = ctx->c; |
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170 d = ctx->d; |
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171 e = ctx->e; |
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172 |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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173 do { |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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174 saved_a = a; |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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175 saved_b = b; |
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An internal SHA1 implementation.
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176 saved_c = c; |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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177 saved_d = d; |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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178 saved_e = e; |
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179 |
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180 /* Load data block into the words array */ |
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181 |
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An internal SHA1 implementation.
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182 for (i = 0; i < 16; i++) { |
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An internal SHA1 implementation.
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183 words[i] = GET(i); |
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An internal SHA1 implementation.
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184 } |
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An internal SHA1 implementation.
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185 |
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An internal SHA1 implementation.
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186 for (i = 16; i < 80; i++) { |
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187 words[i] = ROTATE(1, words[i - 3] ^ words[i - 8] ^ words[i - 14] |
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An internal SHA1 implementation.
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188 ^ words[i - 16]); |
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An internal SHA1 implementation.
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189 } |
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190 |
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An internal SHA1 implementation.
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191 /* Transformations */ |
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192 |
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193 STEP(F1, a, b, c, d, e, words[0], 0x5a827999); |
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194 STEP(F1, a, b, c, d, e, words[1], 0x5a827999); |
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195 STEP(F1, a, b, c, d, e, words[2], 0x5a827999); |
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196 STEP(F1, a, b, c, d, e, words[3], 0x5a827999); |
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197 STEP(F1, a, b, c, d, e, words[4], 0x5a827999); |
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198 STEP(F1, a, b, c, d, e, words[5], 0x5a827999); |
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199 STEP(F1, a, b, c, d, e, words[6], 0x5a827999); |
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200 STEP(F1, a, b, c, d, e, words[7], 0x5a827999); |
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201 STEP(F1, a, b, c, d, e, words[8], 0x5a827999); |
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202 STEP(F1, a, b, c, d, e, words[9], 0x5a827999); |
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203 STEP(F1, a, b, c, d, e, words[10], 0x5a827999); |
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204 STEP(F1, a, b, c, d, e, words[11], 0x5a827999); |
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205 STEP(F1, a, b, c, d, e, words[12], 0x5a827999); |
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An internal SHA1 implementation.
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206 STEP(F1, a, b, c, d, e, words[13], 0x5a827999); |
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207 STEP(F1, a, b, c, d, e, words[14], 0x5a827999); |
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208 STEP(F1, a, b, c, d, e, words[15], 0x5a827999); |
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209 STEP(F1, a, b, c, d, e, words[16], 0x5a827999); |
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An internal SHA1 implementation.
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210 STEP(F1, a, b, c, d, e, words[17], 0x5a827999); |
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An internal SHA1 implementation.
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211 STEP(F1, a, b, c, d, e, words[18], 0x5a827999); |
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An internal SHA1 implementation.
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212 STEP(F1, a, b, c, d, e, words[19], 0x5a827999); |
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An internal SHA1 implementation.
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213 |
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214 STEP(F2, a, b, c, d, e, words[20], 0x6ed9eba1); |
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An internal SHA1 implementation.
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215 STEP(F2, a, b, c, d, e, words[21], 0x6ed9eba1); |
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An internal SHA1 implementation.
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216 STEP(F2, a, b, c, d, e, words[22], 0x6ed9eba1); |
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An internal SHA1 implementation.
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217 STEP(F2, a, b, c, d, e, words[23], 0x6ed9eba1); |
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218 STEP(F2, a, b, c, d, e, words[24], 0x6ed9eba1); |
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An internal SHA1 implementation.
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219 STEP(F2, a, b, c, d, e, words[25], 0x6ed9eba1); |
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An internal SHA1 implementation.
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220 STEP(F2, a, b, c, d, e, words[26], 0x6ed9eba1); |
1064ea81ed3a
An internal SHA1 implementation.
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221 STEP(F2, a, b, c, d, e, words[27], 0x6ed9eba1); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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222 STEP(F2, a, b, c, d, e, words[28], 0x6ed9eba1); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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223 STEP(F2, a, b, c, d, e, words[29], 0x6ed9eba1); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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224 STEP(F2, a, b, c, d, e, words[30], 0x6ed9eba1); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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225 STEP(F2, a, b, c, d, e, words[31], 0x6ed9eba1); |
1064ea81ed3a
An internal SHA1 implementation.
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226 STEP(F2, a, b, c, d, e, words[32], 0x6ed9eba1); |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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227 STEP(F2, a, b, c, d, e, words[33], 0x6ed9eba1); |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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228 STEP(F2, a, b, c, d, e, words[34], 0x6ed9eba1); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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229 STEP(F2, a, b, c, d, e, words[35], 0x6ed9eba1); |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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230 STEP(F2, a, b, c, d, e, words[36], 0x6ed9eba1); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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231 STEP(F2, a, b, c, d, e, words[37], 0x6ed9eba1); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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232 STEP(F2, a, b, c, d, e, words[38], 0x6ed9eba1); |
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An internal SHA1 implementation.
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233 STEP(F2, a, b, c, d, e, words[39], 0x6ed9eba1); |
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An internal SHA1 implementation.
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234 |
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An internal SHA1 implementation.
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235 STEP(F3, a, b, c, d, e, words[40], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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236 STEP(F3, a, b, c, d, e, words[41], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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237 STEP(F3, a, b, c, d, e, words[42], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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238 STEP(F3, a, b, c, d, e, words[43], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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239 STEP(F3, a, b, c, d, e, words[44], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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240 STEP(F3, a, b, c, d, e, words[45], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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241 STEP(F3, a, b, c, d, e, words[46], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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242 STEP(F3, a, b, c, d, e, words[47], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
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243 STEP(F3, a, b, c, d, e, words[48], 0x8f1bbcdc); |
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244 STEP(F3, a, b, c, d, e, words[49], 0x8f1bbcdc); |
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An internal SHA1 implementation.
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245 STEP(F3, a, b, c, d, e, words[50], 0x8f1bbcdc); |
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An internal SHA1 implementation.
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246 STEP(F3, a, b, c, d, e, words[51], 0x8f1bbcdc); |
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An internal SHA1 implementation.
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247 STEP(F3, a, b, c, d, e, words[52], 0x8f1bbcdc); |
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An internal SHA1 implementation.
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248 STEP(F3, a, b, c, d, e, words[53], 0x8f1bbcdc); |
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249 STEP(F3, a, b, c, d, e, words[54], 0x8f1bbcdc); |
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An internal SHA1 implementation.
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250 STEP(F3, a, b, c, d, e, words[55], 0x8f1bbcdc); |
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An internal SHA1 implementation.
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251 STEP(F3, a, b, c, d, e, words[56], 0x8f1bbcdc); |
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An internal SHA1 implementation.
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252 STEP(F3, a, b, c, d, e, words[57], 0x8f1bbcdc); |
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An internal SHA1 implementation.
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253 STEP(F3, a, b, c, d, e, words[58], 0x8f1bbcdc); |
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An internal SHA1 implementation.
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254 STEP(F3, a, b, c, d, e, words[59], 0x8f1bbcdc); |
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An internal SHA1 implementation.
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255 |
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An internal SHA1 implementation.
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256 STEP(F2, a, b, c, d, e, words[60], 0xca62c1d6); |
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An internal SHA1 implementation.
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257 STEP(F2, a, b, c, d, e, words[61], 0xca62c1d6); |
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An internal SHA1 implementation.
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258 STEP(F2, a, b, c, d, e, words[62], 0xca62c1d6); |
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An internal SHA1 implementation.
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259 STEP(F2, a, b, c, d, e, words[63], 0xca62c1d6); |
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An internal SHA1 implementation.
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260 STEP(F2, a, b, c, d, e, words[64], 0xca62c1d6); |
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An internal SHA1 implementation.
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261 STEP(F2, a, b, c, d, e, words[65], 0xca62c1d6); |
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An internal SHA1 implementation.
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262 STEP(F2, a, b, c, d, e, words[66], 0xca62c1d6); |
1064ea81ed3a
An internal SHA1 implementation.
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263 STEP(F2, a, b, c, d, e, words[67], 0xca62c1d6); |
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An internal SHA1 implementation.
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264 STEP(F2, a, b, c, d, e, words[68], 0xca62c1d6); |
1064ea81ed3a
An internal SHA1 implementation.
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265 STEP(F2, a, b, c, d, e, words[69], 0xca62c1d6); |
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An internal SHA1 implementation.
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266 STEP(F2, a, b, c, d, e, words[70], 0xca62c1d6); |
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An internal SHA1 implementation.
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267 STEP(F2, a, b, c, d, e, words[71], 0xca62c1d6); |
1064ea81ed3a
An internal SHA1 implementation.
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268 STEP(F2, a, b, c, d, e, words[72], 0xca62c1d6); |
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An internal SHA1 implementation.
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269 STEP(F2, a, b, c, d, e, words[73], 0xca62c1d6); |
1064ea81ed3a
An internal SHA1 implementation.
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270 STEP(F2, a, b, c, d, e, words[74], 0xca62c1d6); |
1064ea81ed3a
An internal SHA1 implementation.
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271 STEP(F2, a, b, c, d, e, words[75], 0xca62c1d6); |
1064ea81ed3a
An internal SHA1 implementation.
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272 STEP(F2, a, b, c, d, e, words[76], 0xca62c1d6); |
1064ea81ed3a
An internal SHA1 implementation.
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273 STEP(F2, a, b, c, d, e, words[77], 0xca62c1d6); |
1064ea81ed3a
An internal SHA1 implementation.
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274 STEP(F2, a, b, c, d, e, words[78], 0xca62c1d6); |
1064ea81ed3a
An internal SHA1 implementation.
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275 STEP(F2, a, b, c, d, e, words[79], 0xca62c1d6); |
1064ea81ed3a
An internal SHA1 implementation.
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276 |
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An internal SHA1 implementation.
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277 a += saved_a; |
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An internal SHA1 implementation.
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278 b += saved_b; |
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An internal SHA1 implementation.
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279 c += saved_c; |
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An internal SHA1 implementation.
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280 d += saved_d; |
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An internal SHA1 implementation.
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281 e += saved_e; |
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An internal SHA1 implementation.
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282 |
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An internal SHA1 implementation.
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283 p += 64; |
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An internal SHA1 implementation.
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284 |
1064ea81ed3a
An internal SHA1 implementation.
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285 } while (size -= 64); |
1064ea81ed3a
An internal SHA1 implementation.
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286 |
1064ea81ed3a
An internal SHA1 implementation.
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287 ctx->a = a; |
1064ea81ed3a
An internal SHA1 implementation.
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288 ctx->b = b; |
1064ea81ed3a
An internal SHA1 implementation.
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289 ctx->c = c; |
1064ea81ed3a
An internal SHA1 implementation.
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290 ctx->d = d; |
1064ea81ed3a
An internal SHA1 implementation.
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291 ctx->e = e; |
1064ea81ed3a
An internal SHA1 implementation.
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292 |
1064ea81ed3a
An internal SHA1 implementation.
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293 return p; |
1064ea81ed3a
An internal SHA1 implementation.
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294 } |