0
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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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362
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11 static size_t ngx_sprint_uchar(u_char *text, u_char c, size_t len);
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12
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13
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348
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14 /* AF_INET only */
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15
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16 in_addr_t
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17 ngx_inet_addr(u_char *text, size_t len)
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18 {
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19 u_char *p, c;
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20 in_addr_t addr;
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21 ngx_uint_t octet, n;
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22
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23 addr = 0;
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24 octet = 0;
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25 n = 0;
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26
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27 for (p = text; p < text + len; p++) {
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28
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29 c = *p;
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30
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31 if (c >= '0' && c <= '9') {
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32 octet = octet * 10 + (c - '0');
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33 continue;
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34 }
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35
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36 if (c == '.' && octet < 256) {
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37 addr = (addr << 8) + octet;
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38 octet = 0;
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39 n++;
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40 continue;
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41 }
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42
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43 return INADDR_NONE;
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44 }
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45
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46 if (n != 3) {
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47 return INADDR_NONE;
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48 }
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49
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50 if (octet < 256) {
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51 addr = (addr << 8) + octet;
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52 return htonl(addr);
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53 }
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54
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55 return INADDR_NONE;
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56 }
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57
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58
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10
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59 /*
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60 * ngx_sock_ntop() and ngx_inet_ntop() may be implemented as
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130
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61 * "ngx_sprintf(text, "%ud.%ud.%ud.%ud", p[0], p[1], p[2], p[3])", however,
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62 * they had been implemented long before the ngx_sprintf() had appeared
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10
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63 * and they are faster by 1.5-2.5 times, so it is worth to keep them.
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64 *
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65 * By the way, the implementation using ngx_sprintf() is faster by 2.5-3 times
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28
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66 * than using FreeBSD libc's snprintf().
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10
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67 */
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68
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0
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69 /* AF_INET only */
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70
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58
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71 size_t
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72 ngx_sock_ntop(int family, struct sockaddr *sa, u_char *text, size_t len)
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0
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73 {
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74 u_char *p;
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75 size_t n;
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76 ngx_uint_t i;
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28
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77 struct sockaddr_in *sin;
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0
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78
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79 if (len == 0) {
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80 return 0;
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81 }
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82
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83 if (family != AF_INET) {
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84 return 0;
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85 }
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86
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28
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87 sin = (struct sockaddr_in *) sa;
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88 p = (u_char *) &sin->sin_addr;
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0
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89
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90 if (len > INET_ADDRSTRLEN) {
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91 len = INET_ADDRSTRLEN;
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92 }
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93
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94 n = ngx_sprint_uchar(text, p[0], len);
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95
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96 i = 1;
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97
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98 do {
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99 if (len == n) {
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100 text[n - 1] = '\0';
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101 return n;
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102 }
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103
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104 text[n++] = '.';
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105
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106 if (len == n) {
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107 text[n - 1] = '\0';
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108 return n;
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109 }
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110
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111 n += ngx_sprint_uchar(&text[n], p[i++], len - n);
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112
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113 } while (i < 4);
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114
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115 if (len == n) {
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116 text[n] = '\0';
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117 return n;
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118 }
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119
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120 text[n] = '\0';
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121
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122 return n;
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123 }
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124
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362
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125
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58
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126 size_t
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127 ngx_inet_ntop(int family, void *addr, u_char *text, size_t len)
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0
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128 {
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129 u_char *p;
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130 size_t n;
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131 ngx_uint_t i;
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132
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133 if (len == 0) {
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134 return 0;
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135 }
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136
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137 if (family != AF_INET) {
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138 return 0;
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139 }
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140
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141 p = (u_char *) addr;
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142
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143 if (len > INET_ADDRSTRLEN) {
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144 len = INET_ADDRSTRLEN;
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145 }
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146
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147 n = ngx_sprint_uchar(text, p[0], len);
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148
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149 i = 1;
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150
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151 do {
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152 if (len == n) {
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153 text[n - 1] = '\0';
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154 return n;
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155 }
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156
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157 text[n++] = '.';
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158
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159 if (len == n) {
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160 text[n - 1] = '\0';
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161 return n;
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162 }
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163
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164 n += ngx_sprint_uchar(&text[n], p[i++], len - n);
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165
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166 } while (i < 4);
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167
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168 if (len == n) {
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169 text[n] = '\0';
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170 return n;
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171 }
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172
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173 text[n] = '\0';
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174
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175 return n;
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176 }
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177
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178
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362
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179 static size_t
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180 ngx_sprint_uchar(u_char *text, u_char c, size_t len)
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181 {
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182 size_t n;
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183 ngx_uint_t c1, c2;
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184
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185 n = 0;
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186
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187 if (len == n) {
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188 return n;
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189 }
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190
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191 c1 = c / 100;
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192
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193 if (c1) {
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194 *text++ = (u_char) (c1 + '0');
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195 n++;
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196
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197 if (len == n) {
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198 return n;
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199 }
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200 }
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201
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202 c2 = (c % 100) / 10;
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203
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204 if (c1 || c2) {
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205 *text++ = (u_char) (c2 + '0');
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206 n++;
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207
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208 if (len == n) {
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209 return n;
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210 }
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211 }
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212
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213 c2 = c % 10;
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214
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364
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215 *text = (u_char) (c2 + '0');
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362
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216 n++;
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217
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218 return n;
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219 }
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220
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221
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0
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222 /* AF_INET only */
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223
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58
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224 ngx_int_t
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225 ngx_ptocidr(ngx_str_t *text, void *cidr)
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0
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226 {
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227 ngx_int_t m;
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228 ngx_uint_t i;
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229 ngx_inet_cidr_t *in_cidr;
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230
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231 in_cidr = cidr;
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232
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233 for (i = 0; i < text->len; i++) {
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234 if (text->data[i] == '/') {
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235 break;
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236 }
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237 }
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238
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239 if (i == text->len) {
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240 return NGX_ERROR;
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241 }
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242
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243 text->data[i] = '\0';
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244 in_cidr->addr = inet_addr((char *) text->data);
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245 text->data[i] = '/';
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246 if (in_cidr->addr == INADDR_NONE) {
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247 return NGX_ERROR;
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248 }
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249
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250 m = ngx_atoi(&text->data[i + 1], text->len - (i + 1));
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251 if (m == NGX_ERROR) {
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252 return NGX_ERROR;
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253 }
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254
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255 if (m == 0) {
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256
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257 /* the x86 compilers use the shl instruction that shifts by modulo 32 */
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258
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259 in_cidr->mask = 0;
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260 return NGX_OK;
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261 }
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262
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263 in_cidr->mask = htonl((ngx_uint_t) (0 - (1 << (32 - m))));
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264
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326
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265 if (in_cidr->addr == (in_cidr->addr & in_cidr->mask)) {
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266 return NGX_OK;
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267 }
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268
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269 in_cidr->addr &= in_cidr->mask;
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270
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271 return NGX_DONE;
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0
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272 }
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273
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274
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200
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275 ngx_int_t
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340
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276 ngx_parse_url(ngx_pool_t *pool, ngx_url_t *u)
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200
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277 {
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266
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278 u_char *p, *host, *port_start;
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279 size_t len, port_len;
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200
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280 ngx_int_t port;
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281 ngx_uint_t i;
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252
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282 struct hostent *h;
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200
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283 #if (NGX_HAVE_UNIX_DOMAIN)
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284 struct sockaddr_un *saun;
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285 #endif
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286
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287 len = u->url.len;
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288 p = u->url.data;
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289
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286
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290 if (ngx_strncasecmp(p, (u_char *) "unix:", 5) == 0) {
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200
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291
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292 #if (NGX_HAVE_UNIX_DOMAIN)
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293
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294 p += 5;
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295 len -= 5;
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296
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236
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297 u->uri.len = len;
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298 u->uri.data = p;
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299
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200
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300 if (u->uri_part) {
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301 for (i = 0; i < len; i++) {
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302
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303 if (p[i] == ':') {
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304 len = i;
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305
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306 u->uri.len -= len + 1;
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307 u->uri.data += len + 1;
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308
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309 break;
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310 }
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311 }
|
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312 }
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313
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314 if (len == 0) {
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315 u->err = "no path in the unix domain socket";
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316 return NGX_ERROR;
|
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317 }
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318
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319 if (len + 1 > sizeof(saun->sun_path)) {
|
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320 u->err = "too long path in the unix domain socket";
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321 return NGX_ERROR;
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322 }
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323
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340
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324 u->addrs = ngx_pcalloc(pool, sizeof(ngx_peer_addr_t));
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260
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325 if (u->addrs == NULL) {
|
200
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326 return NGX_ERROR;
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327 }
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328
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340
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329 saun = ngx_pcalloc(pool, sizeof(struct sockaddr_un));
|
200
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330 if (saun == NULL) {
|
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331 return NGX_ERROR;
|
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332 }
|
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333
|
260
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334 u->naddrs = 1;
|
200
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335
|
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336 saun->sun_family = AF_UNIX;
|
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337 (void) ngx_cpystrn((u_char *) saun->sun_path, p, len + 1);
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338
|
260
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339 u->addrs[0].sockaddr = (struct sockaddr *) saun;
|
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340 u->addrs[0].socklen = sizeof(struct sockaddr_un);
|
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341 u->addrs[0].name.len = len + 5;
|
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342 u->addrs[0].name.data = u->url.data;
|
200
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343
|
262
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344 u->host.len = len;
|
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345 u->host.data = p;
|
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346
|
266
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347 u->unix_socket = 1;
|
200
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348
|
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349 return NGX_OK;
|
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350
|
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351 #else
|
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352 u->err = "the unix domain sockets are not supported on this platform";
|
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353
|
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354 return NGX_ERROR;
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355
|
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356 #endif
|
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357 }
|
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358
|
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359 if ((p[0] == ':' || p[0] == '/') && !u->listen) {
|
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360 u->err = "invalid host";
|
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361 return NGX_ERROR;
|
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362 }
|
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363
|
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364 u->host.data = p;
|
266
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365
|
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366 port_start = NULL;
|
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367 port_len = 0;
|
200
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368
|
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369 for (i = 0; i < len; i++) {
|
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370
|
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371 if (p[i] == ':') {
|
266
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372 port_start = &p[i + 1];
|
200
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373 u->host.len = i;
|
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374
|
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375 if (!u->uri_part) {
|
266
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376 port_len = len - (i + 1);
|
200
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377 break;
|
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378 }
|
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379 }
|
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380
|
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381 if (p[i] == '/') {
|
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382 u->uri.len = len - i;
|
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383 u->uri.data = &p[i];
|
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384
|
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385 if (u->host.len == 0) {
|
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386 u->host.len = i;
|
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387 }
|
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388
|
266
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389 if (port_start == NULL) {
|
260
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390 u->no_port = 1;
|
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391 goto no_port;
|
200
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392 }
|
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393
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266
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394 port_len = &p[i] - port_start;
|
200
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395
|
266
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396 if (port_len == 0) {
|
200
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397 u->err = "invalid port";
|
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398 return NGX_ERROR;
|
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399 }
|
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400
|
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401 break;
|
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402 }
|
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403 }
|
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404
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266
|
405 if (port_start) {
|
200
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406
|
266
|
407 if (port_len == 0) {
|
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408 port_len = &p[i] - port_start;
|
200
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409
|
266
|
410 if (port_len == 0) {
|
200
|
411 u->err = "invalid port";
|
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412 return NGX_ERROR;
|
|
413 }
|
|
414 }
|
|
415
|
266
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416 port = ngx_atoi(port_start, port_len);
|
200
|
417
|
|
418 if (port == NGX_ERROR || port < 1 || port > 65536) {
|
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419 u->err = "invalid port";
|
|
420 return NGX_ERROR;
|
|
421 }
|
|
422
|
354
|
423 u->port_text.len = port_len;
|
|
424 u->port_text.data = port_start;
|
|
425
|
200
|
426 } else {
|
|
427 port = ngx_atoi(p, len);
|
|
428
|
|
429 if (port == NGX_ERROR) {
|
|
430 u->host.len = len;
|
260
|
431 u->no_port = 1;
|
200
|
432
|
260
|
433 goto no_port;
|
200
|
434 }
|
|
435
|
|
436 u->wildcard = 1;
|
|
437 }
|
|
438
|
266
|
439 u->port = (in_port_t) port;
|
200
|
440
|
260
|
441 no_port:
|
200
|
442
|
|
443 if (u->listen) {
|
260
|
444
|
266
|
445 if (u->port == 0) {
|
|
446 if (u->default_port == 0) {
|
252
|
447 u->err = "no port";
|
|
448 return NGX_ERROR;
|
|
449 }
|
|
450
|
266
|
451 u->port = u->default_port;
|
252
|
452 }
|
|
453
|
|
454 if (u->host.len == 1 && u->host.data[0] == '*') {
|
|
455 u->host.len = 0;
|
|
456 }
|
|
457
|
|
458 /* AF_INET only */
|
|
459
|
|
460 if (u->host.len) {
|
|
461
|
340
|
462 host = ngx_alloc(u->host.len + 1, pool->log);
|
|
463 if (host == NULL) {
|
|
464 return NGX_ERROR;
|
|
465 }
|
252
|
466
|
340
|
467 (void) ngx_cpystrn(host, u->host.data, u->host.len + 1);
|
252
|
468
|
|
469 u->addr.in_addr = inet_addr((const char *) host);
|
|
470
|
|
471 if (u->addr.in_addr == INADDR_NONE) {
|
|
472 h = gethostbyname((const char *) host);
|
|
473
|
|
474 if (h == NULL || h->h_addr_list[0] == NULL) {
|
340
|
475 ngx_free(host);
|
252
|
476 u->err = "host not found";
|
|
477 return NGX_ERROR;
|
|
478 }
|
|
479
|
266
|
480 u->addr.in_addr = *(in_addr_t *) (h->h_addr_list[0]);
|
252
|
481 }
|
|
482
|
340
|
483 ngx_free(host);
|
|
484
|
252
|
485 } else {
|
|
486 u->addr.in_addr = INADDR_ANY;
|
|
487 }
|
|
488
|
200
|
489 return NGX_OK;
|
|
490 }
|
|
491
|
|
492 if (u->host.len == 0) {
|
|
493 u->err = "no host";
|
|
494 return NGX_ERROR;
|
|
495 }
|
|
496
|
260
|
497 if (u->no_resolve) {
|
|
498 return NGX_OK;
|
200
|
499 }
|
|
500
|
266
|
501 if (u->no_port) {
|
|
502 u->port = u->default_port;
|
|
503 }
|
|
504
|
|
505 if (u->port == 0) {
|
|
506 u->err = "no port";
|
|
507 return NGX_ERROR;
|
|
508 }
|
|
509
|
340
|
510 if (ngx_inet_resolve_host(pool, u) != NGX_OK) {
|
200
|
511 return NGX_ERROR;
|
|
512 }
|
|
513
|
|
514 return NGX_OK;
|
|
515 }
|
|
516
|
|
517
|
260
|
518 ngx_int_t
|
340
|
519 ngx_inet_resolve_host(ngx_pool_t *pool, ngx_url_t *u)
|
200
|
520 {
|
266
|
521 u_char *p, *host;
|
200
|
522 size_t len;
|
|
523 in_addr_t in_addr;
|
|
524 ngx_uint_t i;
|
|
525 struct hostent *h;
|
|
526 struct sockaddr_in *sin;
|
|
527
|
340
|
528 host = ngx_alloc(u->host.len + 1, pool->log);
|
200
|
529 if (host == NULL) {
|
260
|
530 return NGX_ERROR;
|
200
|
531 }
|
|
532
|
260
|
533 (void) ngx_cpystrn(host, u->host.data, u->host.len + 1);
|
200
|
534
|
|
535 /* AF_INET only */
|
|
536
|
|
537 in_addr = inet_addr((char *) host);
|
|
538
|
|
539 if (in_addr == INADDR_NONE) {
|
|
540 h = gethostbyname((char *) host);
|
|
541
|
340
|
542 ngx_free(host);
|
|
543
|
200
|
544 if (h == NULL || h->h_addr_list[0] == NULL) {
|
260
|
545 u->err = "host not found";
|
|
546 return NGX_ERROR;
|
200
|
547 }
|
|
548
|
260
|
549 if (u->one_addr == 0) {
|
|
550 for (i = 0; h->h_addr_list[i] != NULL; i++) { /* void */ }
|
|
551
|
|
552 } else {
|
|
553 i = 1;
|
|
554 }
|
200
|
555
|
|
556 /* MP: ngx_shared_palloc() */
|
|
557
|
340
|
558 u->addrs = ngx_pcalloc(pool, i * sizeof(ngx_peer_addr_t));
|
260
|
559 if (u->addrs == NULL) {
|
|
560 return NGX_ERROR;
|
200
|
561 }
|
|
562
|
260
|
563 u->naddrs = i;
|
200
|
564
|
|
565 for (i = 0; h->h_addr_list[i] != NULL; i++) {
|
|
566
|
340
|
567 sin = ngx_pcalloc(pool, sizeof(struct sockaddr_in));
|
200
|
568 if (sin == NULL) {
|
260
|
569 return NGX_ERROR;
|
200
|
570 }
|
|
571
|
|
572 sin->sin_family = AF_INET;
|
266
|
573 sin->sin_port = htons(u->port);
|
200
|
574 sin->sin_addr.s_addr = *(in_addr_t *) (h->h_addr_list[i]);
|
|
575
|
260
|
576 u->addrs[i].sockaddr = (struct sockaddr *) sin;
|
|
577 u->addrs[i].socklen = sizeof(struct sockaddr_in);
|
200
|
578
|
|
579 len = INET_ADDRSTRLEN - 1 + 1 + sizeof(":65536") - 1;
|
|
580
|
382
|
581 p = ngx_pnalloc(pool, len);
|
266
|
582 if (p == NULL) {
|
260
|
583 return NGX_ERROR;
|
200
|
584 }
|
|
585
|
266
|
586 len = ngx_sock_ntop(AF_INET, (struct sockaddr *) sin, p, len);
|
200
|
587
|
266
|
588 u->addrs[i].name.len = ngx_sprintf(&p[len], ":%d", u->port) - p;
|
|
589 u->addrs[i].name.data = p;
|
200
|
590 }
|
|
591
|
|
592 } else {
|
|
593
|
340
|
594 ngx_free(host);
|
|
595
|
200
|
596 /* MP: ngx_shared_palloc() */
|
|
597
|
340
|
598 u->addrs = ngx_pcalloc(pool, sizeof(ngx_peer_addr_t));
|
260
|
599 if (u->addrs == NULL) {
|
|
600 return NGX_ERROR;
|
200
|
601 }
|
|
602
|
340
|
603 sin = ngx_pcalloc(pool, sizeof(struct sockaddr_in));
|
200
|
604 if (sin == NULL) {
|
260
|
605 return NGX_ERROR;
|
200
|
606 }
|
|
607
|
260
|
608 u->naddrs = 1;
|
200
|
609
|
|
610 sin->sin_family = AF_INET;
|
266
|
611 sin->sin_port = htons(u->port);
|
200
|
612 sin->sin_addr.s_addr = in_addr;
|
|
613
|
260
|
614 u->addrs[0].sockaddr = (struct sockaddr *) sin;
|
|
615 u->addrs[0].socklen = sizeof(struct sockaddr_in);
|
200
|
616
|
382
|
617 p = ngx_pnalloc(pool, u->host.len + sizeof(":65536") - 1);
|
266
|
618 if (p == NULL) {
|
260
|
619 return NGX_ERROR;
|
200
|
620 }
|
|
621
|
266
|
622 u->addrs[0].name.len = ngx_sprintf(p, "%V:%d", &u->host, u->port) - p;
|
|
623 u->addrs[0].name.data = p;
|
200
|
624 }
|
|
625
|
260
|
626 return NGX_OK;
|
200
|
627 }
|