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56
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9
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10
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138
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11 void *
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12 ngx_hash_find(ngx_hash_t *hash, ngx_uint_t key, u_char *name, size_t len)
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13 {
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14 ngx_uint_t i;
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15 ngx_hash_elt_t *elt;
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16
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17 #if 0
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18 ngx_str_t line;
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19
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20 line.len = len;
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21 line.data = name;
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22 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, "hf:\"%V\"", &line);
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23 #endif
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24
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25 elt = hash->buckets[key % hash->size];
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26
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27 if (elt == NULL) {
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28 return NULL;
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29 }
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30
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31 while (elt->value) {
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32 if (len != (size_t) elt->len) {
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33 goto next;
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34 }
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35
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36 for (i = 0; i < len; i++) {
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37 if (name[i] != elt->name[i]) {
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38 goto next;
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39 }
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40 }
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41
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42 return elt->value;
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43
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44 next:
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45
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46 elt = (ngx_hash_elt_t *) ngx_align_ptr(&elt->name[0] + elt->len,
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47 sizeof(void *));
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48 continue;
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49 }
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50
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51 return NULL;
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52 }
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53
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54
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55 void *
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56 ngx_hash_find_wildcard(ngx_hash_wildcard_t *hwc, u_char *name, size_t len)
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57 {
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58 void *value;
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59 ngx_uint_t i, n, key;
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60
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61 #if 0
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62 ngx_str_t line;
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63
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64 line.len = len;
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65 line.data = name;
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66 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, "wc:\"%V\"", &line);
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67 #endif
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68
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69 n = len;
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70
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71 while (n) {
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72 if (name[n - 1] == '.') {
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73 break;
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74 }
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75
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76 n--;
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77 }
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78
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79 key = 0;
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80
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81 for (i = n; i < len; i++) {
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82 key = ngx_hash(key, name[i]);
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83 }
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84
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85 #if 0
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86 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, "key:\"%ui\"", key);
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87 #endif
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88
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89 value = ngx_hash_find(&hwc->hash, key, &name[n], len - n);
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90
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91 if (value) {
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140
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92
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93 /*
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94 * the 2 low bits of value have the special meaning:
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95 * 00 - value is data pointer,
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96 * 01 - value is pointer to wildcard hash allowing
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97 * "*.example.com" only,
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98 * 11 - value is pointer to wildcard hash allowing
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99 * both "example.com" and "*.example.com".
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100 */
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101
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138
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102 if ((uintptr_t) value & 1) {
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140
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103
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104 hwc = (ngx_hash_wildcard_t *) ((uintptr_t) value & (uintptr_t) ~3);
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105
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106 if (n == 0) {
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107 if ((uintptr_t) value & 2) {
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108 return hwc->value;
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109
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110 } else {
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111 return NULL;
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112 }
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113 }
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138
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114
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115 value = ngx_hash_find_wildcard(hwc, name, n - 1);
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116
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117 if (value) {
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118 return value;
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119 }
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120
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121 return hwc->value;
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122 }
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123
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124 return value;
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125 }
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126
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127 return hwc->value;
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128 }
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129
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130
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131 #define NGX_HASH_ELT_SIZE(name) \
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144
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132 (sizeof(void *) + ngx_align((name)->key.len + 1, sizeof(void *)))
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138
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133
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56
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134 ngx_int_t
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138
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135 ngx_hash_init(ngx_hash_init_t *hinit, ngx_hash_key_t *names, ngx_uint_t nelts)
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136 {
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137 u_char *elts;
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144
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138 size_t len;
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139 u_short *test;
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138
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140 ngx_uint_t i, n, key, size, start, bucket_size;
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141 ngx_hash_elt_t *elt, **buckets;
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142
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143 for (n = 0; n < nelts; n++) {
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144 if (names[n].key.len >= 255) {
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145 ngx_log_error(NGX_LOG_EMERG, hinit->pool->log, 0,
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146 "the \"%V\" value to hash is to long: %uz bytes, "
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147 "the maximum length can be 255 bytes only",
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148 &names[n].key, names[n].key.len);
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149 return NGX_ERROR;
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150 }
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151
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152 if (hinit->bucket_size < NGX_HASH_ELT_SIZE(&names[n]) + sizeof(void *))
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153 {
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154 ngx_log_error(NGX_LOG_EMERG, hinit->pool->log, 0,
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144
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155 "could not build the %s, you should "
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138
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156 "increase %s_bucket_size: %i",
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157 hinit->name, hinit->name, hinit->bucket_size);
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158 return NGX_ERROR;
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159 }
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160 }
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161
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144
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162 test = ngx_alloc(hinit->max_size * sizeof(u_short), hinit->pool->log);
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138
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163 if (test == NULL) {
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164 return NGX_ERROR;
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165 }
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166
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180
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167 bucket_size = hinit->bucket_size - sizeof(void *);
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168
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242
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169 start = nelts / (bucket_size / (2 * sizeof(void *)));
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138
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170 start = start ? start : 1;
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171
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180
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172 if (hinit->max_size > 10000 && hinit->max_size / nelts < 100) {
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173 start = hinit->max_size - 1000;
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174 }
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138
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175
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176 for (size = start; size < hinit->max_size; size++) {
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177
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144
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178 ngx_memzero(test, size * sizeof(u_short));
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138
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179
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180 for (n = 0; n < nelts; n++) {
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181 if (names[n].key.data == NULL) {
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182 continue;
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183 }
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184
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185 key = names[n].key_hash % size;
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144
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186 test[key] = (u_short) (test[key] + NGX_HASH_ELT_SIZE(&names[n]));
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138
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187
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188 #if 0
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189 ngx_log_error(NGX_LOG_ALERT, hinit->pool->log, 0,
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190 "%ui: %ui %ui \"%V\"",
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191 size, key, test[key], &names[n].key);
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192 #endif
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193
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144
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194 if (test[key] > (u_short) bucket_size) {
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138
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195 goto next;
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196 }
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197 }
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198
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199 goto found;
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200
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201 next:
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202
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203 continue;
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204 }
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205
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206 ngx_log_error(NGX_LOG_EMERG, hinit->pool->log, 0,
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144
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207 "could not build the %s, you should increase "
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138
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208 "either %s_max_size: %i or %s_bucket_size: %i",
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209 hinit->name, hinit->name, hinit->max_size,
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210 hinit->name, hinit->bucket_size);
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211
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212 ngx_free(test);
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213
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214 return NGX_ERROR;
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215
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216 found:
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217
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218 for (i = 0; i < size; i++) {
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219 test[i] = sizeof(void *);
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220 }
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221
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222 for (n = 0; n < nelts; n++) {
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223 if (names[n].key.data == NULL) {
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224 continue;
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225 }
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226
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227 key = names[n].key_hash % size;
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144
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228 test[key] = (u_short) (test[key] + NGX_HASH_ELT_SIZE(&names[n]));
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138
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229 }
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230
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231 len = 0;
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232
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233 for (i = 0; i < size; i++) {
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234 if (test[i] == sizeof(void *)) {
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235 continue;
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236 }
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237
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144
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238 test[i] = (u_short) (ngx_align(test[i], ngx_cacheline_size));
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138
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239
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240 len += test[i];
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241 }
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242
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243 if (hinit->hash == NULL) {
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244 hinit->hash = ngx_pcalloc(hinit->pool, sizeof(ngx_hash_wildcard_t)
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245 + size * sizeof(ngx_hash_elt_t *));
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246 if (hinit->hash == NULL) {
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247 ngx_free(test);
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248 return NGX_ERROR;
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249 }
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250
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251 buckets = (ngx_hash_elt_t **)
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252 ((u_char *) hinit->hash + sizeof(ngx_hash_wildcard_t));
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253
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254 } else {
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255 buckets = ngx_pcalloc(hinit->pool, size * sizeof(ngx_hash_elt_t *));
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256 if (buckets == NULL) {
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257 ngx_free(test);
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258 return NGX_ERROR;
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259 }
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260 }
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261
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262 elts = ngx_palloc(hinit->pool, len + ngx_cacheline_size);
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263 if (elts == NULL) {
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264 ngx_free(test);
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265 return NGX_ERROR;
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266 }
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267
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268 elts = ngx_align_ptr(elts, ngx_cacheline_size);
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269
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270 for (i = 0; i < size; i++) {
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271 if (test[i] == sizeof(void *)) {
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272 continue;
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273 }
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274
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275 buckets[i] = (ngx_hash_elt_t *) elts;
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276 elts += test[i];
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277
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278 }
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279
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280 for (i = 0; i < size; i++) {
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281 test[i] = 0;
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282 }
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283
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284 for (n = 0; n < nelts; n++) {
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285 if (names[n].key.data == NULL) {
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286 continue;
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287 }
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288
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289 key = names[n].key_hash % size;
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290 elt = (ngx_hash_elt_t *) ((u_char *) buckets[key] + test[key]);
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291
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292 elt->value = names[n].value;
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293 elt->len = (u_char) names[n].key.len;
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294
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295 for (i = 0; i < names[n].key.len; i++) {
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296 elt->name[i] = ngx_tolower(names[n].key.data[i]);
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297 }
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298
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144
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299 test[key] = (u_short) (test[key] + NGX_HASH_ELT_SIZE(&names[n]));
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138
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300 }
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301
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302 for (i = 0; i < size; i++) {
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303 if (buckets[i] == NULL) {
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304 continue;
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305 }
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306
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307 elt = (ngx_hash_elt_t *) ((u_char *) buckets[i] + test[i]);
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308
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309 elt->value = NULL;
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310 }
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311
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312 ngx_free(test);
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313
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314 hinit->hash->buckets = buckets;
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315 hinit->hash->size = size;
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316
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317 #if 0
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318
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319 for (i = 0; i < size; i++) {
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320 ngx_str_t val;
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321 ngx_uint_t key;
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322
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323 elt = buckets[i];
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324
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325 if (elt == NULL) {
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326 ngx_log_error(NGX_LOG_ALERT, hinit->pool->log, 0,
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327 "%ui: NULL", i);
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328 continue;
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329 }
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330
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331 while (elt->value) {
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332 val.len = elt->len;
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333 val.data = &elt->name[0];
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334
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335 key = hinit->key(val.data, val.len);
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336
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337 ngx_log_error(NGX_LOG_ALERT, hinit->pool->log, 0,
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338 "%ui: %p \"%V\" %ui", i, elt, &val, key);
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339
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340 elt = (ngx_hash_elt_t *) ngx_align_ptr(&elt->name[0] + elt->len,
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341 sizeof(void *));
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342 }
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343 }
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344
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345 #endif
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346
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347 return NGX_OK;
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348 }
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349
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350
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351 ngx_int_t
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352 ngx_hash_wildcard_init(ngx_hash_init_t *hinit, ngx_hash_key_t *names,
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353 ngx_uint_t nelts)
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354 {
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142
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355 size_t len, dot_len;
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140
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356 ngx_uint_t i, n, dot;
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138
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357 ngx_array_t curr_names, next_names;
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358 ngx_hash_key_t *name, *next_name;
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359 ngx_hash_init_t h;
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360 ngx_hash_wildcard_t *wdc;
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361
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362 if (ngx_array_init(&curr_names, hinit->temp_pool, nelts,
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363 sizeof(ngx_hash_key_t))
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364 != NGX_OK)
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365 {
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366 return NGX_ERROR;
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367 }
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368
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369 if (ngx_array_init(&next_names, hinit->temp_pool, nelts,
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370 sizeof(ngx_hash_key_t))
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371 != NGX_OK)
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372 {
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373 return NGX_ERROR;
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374 }
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375
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376 for (n = 0; n < nelts; n = i) {
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377
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378 #if 0
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379 ngx_log_error(NGX_LOG_ALERT, hinit->pool->log, 0,
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380 "wc0: \"%V\"", &names[n].key);
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381 #endif
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382
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140
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383 dot = 0;
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384
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138
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385 for (len = 0; len < names[n].key.len; len++) {
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386 if (names[n].key.data[len] == '.') {
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140
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387 dot = 1;
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138
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388 break;
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389 }
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390 }
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391
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392 name = ngx_array_push(&curr_names);
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393 if (name == NULL) {
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394 return NGX_ERROR;
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395 }
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396
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140
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397 name->key.len = len;
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138
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398 name->key.data = names[n].key.data;
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399 name->key_hash = hinit->key(name->key.data, name->key.len);
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400 name->value = names[n].value;
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401
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402 #if 0
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403 ngx_log_error(NGX_LOG_ALERT, hinit->pool->log, 0,
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142
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404 "wc1: \"%V\" %ui", &name->key, dot);
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138
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405 #endif
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406
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142
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407 dot_len = len + 1;
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408
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140
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409 if (dot) {
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410 len++;
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411 }
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412
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138
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413 next_names.nelts = 0;
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414
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415 if (names[n].key.len != len) {
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416 next_name = ngx_array_push(&next_names);
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417 if (next_name == NULL) {
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418 return NGX_ERROR;
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419 }
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420
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421 next_name->key.len = names[n].key.len - len;
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|
|
422 next_name->key.data = names[n].key.data + len;
|
|
|
423 next_name->key_hash= 0;
|
|
|
424 next_name->value = names[n].value;
|
|
|
425
|
|
|
426 #if 0
|
|
|
427 ngx_log_error(NGX_LOG_ALERT, hinit->pool->log, 0,
|
|
|
428 "wc2: \"%V\"", &next_name->key);
|
|
|
429 #endif
|
|
|
430 }
|
|
|
431
|
|
|
432 for (i = n + 1; i < nelts; i++) {
|
|
|
433 if (ngx_strncmp(names[n].key.data, names[i].key.data, len) != 0) {
|
|
|
434 break;
|
|
|
435 }
|
|
|
436
|
|
142
|
437 if (!dot
|
|
|
438 && names[i].key.len > len
|
|
|
439 && names[i].key.data[len] != '.')
|
|
|
440 {
|
|
|
441 break;
|
|
|
442 }
|
|
|
443
|
|
138
|
444 next_name = ngx_array_push(&next_names);
|
|
|
445 if (next_name == NULL) {
|
|
|
446 return NGX_ERROR;
|
|
|
447 }
|
|
|
448
|
|
142
|
449 next_name->key.len = names[i].key.len - dot_len;
|
|
|
450 next_name->key.data = names[i].key.data + dot_len;
|
|
138
|
451 next_name->key_hash= 0;
|
|
|
452 next_name->value = names[i].value;
|
|
|
453
|
|
|
454 #if 0
|
|
|
455 ngx_log_error(NGX_LOG_ALERT, hinit->pool->log, 0,
|
|
140
|
456 "wc3: \"%V\"", &next_name->key);
|
|
138
|
457 #endif
|
|
|
458 }
|
|
|
459
|
|
|
460 if (next_names.nelts) {
|
|
142
|
461
|
|
138
|
462 h = *hinit;
|
|
|
463 h.hash = NULL;
|
|
|
464
|
|
|
465 if (ngx_hash_wildcard_init(&h, (ngx_hash_key_t *) next_names.elts,
|
|
|
466 next_names.nelts)
|
|
|
467 != NGX_OK)
|
|
|
468 {
|
|
|
469 return NGX_ERROR;
|
|
|
470 }
|
|
|
471
|
|
|
472 wdc = (ngx_hash_wildcard_t *) h.hash;
|
|
|
473
|
|
|
474 if (names[n].key.len == len) {
|
|
|
475 wdc->value = names[n].value;
|
|
|
476 #if 0
|
|
142
|
477 ngx_log_error(NGX_LOG_ALERT, hinit->pool->log, 0,
|
|
|
478 "wdc: \"%V\"", wdc->value);
|
|
138
|
479 #endif
|
|
|
480 }
|
|
|
481
|
|
140
|
482 name->value = (void *) ((uintptr_t) wdc | (dot ? 1 : 3));
|
|
138
|
483 }
|
|
|
484 }
|
|
|
485
|
|
|
486 if (ngx_hash_init(hinit, (ngx_hash_key_t *) curr_names.elts,
|
|
|
487 curr_names.nelts)
|
|
|
488 != NGX_OK)
|
|
|
489 {
|
|
|
490 return NGX_ERROR;
|
|
|
491 }
|
|
|
492
|
|
|
493 return NGX_OK;
|
|
|
494 }
|
|
|
495
|
|
|
496
|
|
|
497 ngx_uint_t
|
|
|
498 ngx_hash_key(u_char *data, size_t len)
|
|
|
499 {
|
|
|
500 ngx_uint_t i, key;
|
|
|
501
|
|
|
502 key = 0;
|
|
|
503
|
|
|
504 for (i = 0; i < len; i++) {
|
|
|
505 key = ngx_hash(key, data[i]);
|
|
|
506 }
|
|
|
507
|
|
|
508 return key;
|
|
|
509 }
|
|
|
510
|
|
|
511
|
|
|
512 ngx_uint_t
|
|
|
513 ngx_hash_key_lc(u_char *data, size_t len)
|
|
|
514 {
|
|
|
515 ngx_uint_t i, key;
|
|
|
516
|
|
|
517 key = 0;
|
|
|
518
|
|
|
519 for (i = 0; i < len; i++) {
|
|
|
520 key = ngx_hash(key, ngx_tolower(data[i]));
|
|
|
521 }
|
|
|
522
|
|
|
523 return key;
|
|
|
524 }
|
|
|
525
|
|
|
526
|
|
|
527 ngx_int_t
|
|
142
|
528 ngx_hash_keys_array_init(ngx_hash_keys_arrays_t *ha, ngx_uint_t type)
|
|
|
529 {
|
|
|
530 ngx_uint_t asize;
|
|
|
531
|
|
|
532 if (type == NGX_HASH_SMALL) {
|
|
|
533 asize = 4;
|
|
|
534 ha->hsize = 107;
|
|
|
535
|
|
|
536 } else {
|
|
|
537 asize = NGX_HASH_LARGE_ASIZE;
|
|
|
538 ha->hsize = NGX_HASH_LARGE_HSIZE;
|
|
|
539 }
|
|
|
540
|
|
|
541 if (ngx_array_init(&ha->keys, ha->temp_pool, asize, sizeof(ngx_hash_key_t))
|
|
|
542 != NGX_OK)
|
|
|
543 {
|
|
|
544 return NGX_ERROR;
|
|
|
545 }
|
|
|
546
|
|
|
547 if (ngx_array_init(&ha->dns_wildcards, ha->temp_pool, asize,
|
|
|
548 sizeof(ngx_hash_key_t))
|
|
|
549 != NGX_OK)
|
|
|
550 {
|
|
|
551 return NGX_ERROR;
|
|
|
552 }
|
|
|
553
|
|
|
554 ha->keys_hash = ngx_pcalloc(ha->temp_pool, sizeof(ngx_array_t) * ha->hsize);
|
|
|
555 if (ha->keys_hash == NULL) {
|
|
|
556 return NGX_ERROR;
|
|
|
557 }
|
|
|
558
|
|
|
559 ha->dns_wildcards_hash = ngx_pcalloc(ha->temp_pool,
|
|
|
560 sizeof(ngx_array_t) * ha->hsize);
|
|
|
561 if (ha->dns_wildcards_hash == NULL) {
|
|
|
562 return NGX_ERROR;
|
|
|
563 }
|
|
|
564
|
|
|
565 return NGX_OK;
|
|
|
566 }
|
|
|
567
|
|
|
568
|
|
|
569 ngx_int_t
|
|
|
570 ngx_hash_add_key(ngx_hash_keys_arrays_t *ha, ngx_str_t *key, void *value,
|
|
|
571 ngx_uint_t flags)
|
|
|
572 {
|
|
|
573 size_t len;
|
|
168
|
574 u_char *reverse;
|
|
142
|
575 ngx_str_t *name;
|
|
|
576 ngx_uint_t i, k, n, skip;
|
|
|
577 ngx_hash_key_t *hk;
|
|
|
578
|
|
|
579 if (!(flags & NGX_HASH_WILDCARD_KEY)) {
|
|
|
580
|
|
|
581 /* exact hash */
|
|
|
582
|
|
|
583 k = 0;
|
|
|
584
|
|
|
585 for (i = 0; i < key->len; i++) {
|
|
146
|
586 if (!(flags & NGX_HASH_READONLY_KEY)) {
|
|
|
587 key->data[i] = ngx_tolower(key->data[i]);
|
|
|
588 }
|
|
142
|
589 k = ngx_hash(k, key->data[i]);
|
|
|
590 }
|
|
|
591
|
|
|
592 k %= ha->hsize;
|
|
|
593
|
|
|
594 /* check conflicts in exact hash */
|
|
|
595
|
|
|
596 name = ha->keys_hash[k].elts;
|
|
|
597
|
|
|
598 if (name) {
|
|
|
599 for (i = 0; i < ha->keys_hash[k].nelts; i++) {
|
|
|
600 if (key->len != name[i].len) {
|
|
|
601 continue;
|
|
|
602 }
|
|
|
603
|
|
|
604 if (ngx_strncmp(key->data, name[i].data, key->len) == 0) {
|
|
|
605 return NGX_BUSY;
|
|
|
606 }
|
|
|
607 }
|
|
|
608
|
|
|
609 } else {
|
|
|
610 if (ngx_array_init(&ha->keys_hash[k], ha->temp_pool, 4,
|
|
|
611 sizeof(ngx_str_t))
|
|
|
612 != NGX_OK)
|
|
|
613 {
|
|
|
614 return NGX_ERROR;
|
|
|
615 }
|
|
|
616 }
|
|
|
617
|
|
|
618 name = ngx_array_push(&ha->keys_hash[k]);
|
|
|
619 if (name == NULL) {
|
|
|
620 return NGX_ERROR;
|
|
|
621 }
|
|
|
622
|
|
|
623 *name = *key;
|
|
|
624
|
|
|
625 hk = ngx_array_push(&ha->keys);
|
|
|
626 if (hk == NULL) {
|
|
|
627 return NGX_ERROR;
|
|
|
628 }
|
|
|
629
|
|
|
630 hk->key = *key;
|
|
|
631 hk->key_hash = ngx_hash_key(key->data, key->len);
|
|
|
632 hk->value = value;
|
|
|
633
|
|
|
634 } else {
|
|
|
635
|
|
|
636 /* wildcard hash */
|
|
|
637
|
|
|
638 skip = (key->data[0] == '*') ? 2 : 1;
|
|
|
639 k = 0;
|
|
|
640
|
|
|
641 for (i = skip; i < key->len; i++) {
|
|
|
642 key->data[i] = ngx_tolower(key->data[i]);
|
|
|
643 k = ngx_hash(k, key->data[i]);
|
|
|
644 }
|
|
|
645
|
|
|
646 k %= ha->hsize;
|
|
|
647
|
|
|
648 if (skip == 1) {
|
|
|
649
|
|
|
650 /* check conflicts in exact hash for ".example.com" */
|
|
|
651
|
|
|
652 name = ha->keys_hash[k].elts;
|
|
|
653
|
|
|
654 if (name) {
|
|
|
655 len = key->len - skip;
|
|
|
656
|
|
|
657 for (i = 0; i < ha->keys_hash[k].nelts; i++) {
|
|
|
658 if (len != name[i].len) {
|
|
|
659 continue;
|
|
|
660 }
|
|
|
661
|
|
|
662 if (ngx_strncmp(&key->data[1], name[i].data, len) == 0) {
|
|
|
663 return NGX_BUSY;
|
|
|
664 }
|
|
|
665 }
|
|
|
666
|
|
|
667 } else {
|
|
|
668 if (ngx_array_init(&ha->keys_hash[k], ha->temp_pool, 4,
|
|
|
669 sizeof(ngx_str_t))
|
|
|
670 != NGX_OK)
|
|
|
671 {
|
|
|
672 return NGX_ERROR;
|
|
|
673 }
|
|
|
674 }
|
|
|
675
|
|
|
676 name = ngx_array_push(&ha->keys_hash[k]);
|
|
|
677 if (name == NULL) {
|
|
|
678 return NGX_ERROR;
|
|
|
679 }
|
|
|
680
|
|
|
681 name->len = key->len - 1;
|
|
|
682 name->data = ngx_palloc(ha->temp_pool, name->len);
|
|
|
683 if (name->data == NULL) {
|
|
|
684 return NGX_ERROR;
|
|
|
685 }
|
|
|
686
|
|
|
687 ngx_memcpy(name->data, &key->data[1], name->len);
|
|
|
688 }
|
|
|
689
|
|
|
690
|
|
|
691 /*
|
|
|
692 * convert "*.example.com" to "com.example.\0"
|
|
|
693 * and ".example.com" to "com.example\0"
|
|
|
694 */
|
|
|
695
|
|
168
|
696 reverse = ngx_palloc(ha->temp_pool, key->len);
|
|
|
697 if (reverse == NULL) {
|
|
|
698 return NGX_ERROR;
|
|
|
699 }
|
|
|
700
|
|
142
|
701 len = 0;
|
|
|
702 n = 0;
|
|
|
703
|
|
|
704 for (i = key->len - 1; i; i--) {
|
|
|
705 if (key->data[i] == '.') {
|
|
168
|
706 ngx_memcpy(&reverse[n], &key->data[i + 1], len);
|
|
142
|
707 n += len;
|
|
168
|
708 reverse[n++] = '.';
|
|
142
|
709 len = 0;
|
|
|
710 continue;
|
|
|
711 }
|
|
|
712
|
|
|
713 len++;
|
|
|
714 }
|
|
|
715
|
|
|
716 if (len) {
|
|
168
|
717 ngx_memcpy(&reverse[n], &key->data[1], len);
|
|
142
|
718 n += len;
|
|
|
719 }
|
|
|
720
|
|
168
|
721 reverse[n] = '\0';
|
|
|
722
|
|
|
723
|
|
|
724 hk = ngx_array_push(&ha->dns_wildcards);
|
|
|
725 if (hk == NULL) {
|
|
|
726 return NGX_ERROR;
|
|
|
727 }
|
|
|
728
|
|
|
729 hk->key.len = key->len - 1;
|
|
|
730 hk->key.data = reverse;
|
|
|
731 hk->key_hash = 0;
|
|
|
732 hk->value = value;
|
|
142
|
733
|
|
|
734
|
|
|
735 /* check conflicts in wildcard hash */
|
|
|
736
|
|
|
737 name = ha->dns_wildcards_hash[k].elts;
|
|
|
738
|
|
|
739 if (name) {
|
|
|
740 len = key->len - skip;
|
|
|
741
|
|
|
742 for (i = 0; i < ha->dns_wildcards_hash[k].nelts; i++) {
|
|
|
743 if (len != name[i].len) {
|
|
|
744 continue;
|
|
|
745 }
|
|
|
746
|
|
|
747 if (ngx_strncmp(key->data + skip, name[i].data, len) == 0) {
|
|
|
748 return NGX_BUSY;
|
|
|
749 }
|
|
|
750 }
|
|
|
751
|
|
|
752 } else {
|
|
|
753 if (ngx_array_init(&ha->dns_wildcards_hash[k], ha->temp_pool, 4,
|
|
|
754 sizeof(ngx_str_t))
|
|
|
755 != NGX_OK)
|
|
|
756 {
|
|
|
757 return NGX_ERROR;
|
|
|
758 }
|
|
|
759 }
|
|
|
760
|
|
|
761 name = ngx_array_push(&ha->dns_wildcards_hash[k]);
|
|
|
762 if (name == NULL) {
|
|
|
763 return NGX_ERROR;
|
|
|
764 }
|
|
|
765
|
|
|
766 name->len = key->len - skip;
|
|
|
767 name->data = ngx_palloc(ha->temp_pool, name->len);
|
|
|
768 if (name->data == NULL) {
|
|
|
769 return NGX_ERROR;
|
|
|
770 }
|
|
168
|
771
|
|
142
|
772 ngx_memcpy(name->data, key->data + skip, name->len);
|
|
|
773 }
|
|
|
774
|
|
|
775 return NGX_OK;
|
|
|
776 }
|
