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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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400
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11 static ngx_int_t ngx_parse_unix_domain_url(ngx_pool_t *pool, ngx_url_t *u);
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12 static ngx_int_t ngx_parse_inet_url(ngx_pool_t *pool, ngx_url_t *u);
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362
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13
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14
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348
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15 /* AF_INET only */
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16
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17 in_addr_t
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18 ngx_inet_addr(u_char *text, size_t len)
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19 {
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20 u_char *p, c;
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21 in_addr_t addr;
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22 ngx_uint_t octet, n;
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23
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24 addr = 0;
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25 octet = 0;
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26 n = 0;
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27
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28 for (p = text; p < text + len; p++) {
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29
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30 c = *p;
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31
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32 if (c >= '0' && c <= '9') {
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33 octet = octet * 10 + (c - '0');
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34 continue;
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35 }
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36
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37 if (c == '.' && octet < 256) {
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38 addr = (addr << 8) + octet;
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39 octet = 0;
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40 n++;
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41 continue;
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42 }
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43
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44 return INADDR_NONE;
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45 }
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46
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47 if (n != 3) {
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48 return INADDR_NONE;
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49 }
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50
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51 if (octet < 256) {
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52 addr = (addr << 8) + octet;
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53 return htonl(addr);
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54 }
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55
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56 return INADDR_NONE;
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57 }
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58
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59
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0
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60 /* AF_INET only */
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61
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58
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62 size_t
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400
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63 ngx_sock_ntop(struct sockaddr *sa, u_char *text, size_t len)
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0
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64 {
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65 u_char *p;
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28
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66 struct sockaddr_in *sin;
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0
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67
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400
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68 if (sa->sa_family == AF_INET) {
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0
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69
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400
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70 sin = (struct sockaddr_in *) sa;
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71 p = (u_char *) &sin->sin_addr;
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0
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72
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400
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73 return ngx_snprintf(text, len, "%ud.%ud.%ud.%ud",
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74 p[0], p[1], p[2], p[3])
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75 - text;
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0
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76 }
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77
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400
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78 return 0;
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0
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79 }
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80
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362
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81
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58
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82 size_t
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83 ngx_inet_ntop(int family, void *addr, u_char *text, size_t len)
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0
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84 {
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400
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85 u_char *p;
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0
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86
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400
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87 if (family == AF_INET) {
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0
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88
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400
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89 p = (u_char *) addr;
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0
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90
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400
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91 return ngx_snprintf(text, len, "%ud.%ud.%ud.%ud",
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92 p[0], p[1], p[2], p[3])
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93 - text;
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0
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94 }
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95
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400
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96 return 0;
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362
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97 }
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98
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99
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0
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100 /* AF_INET only */
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101
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58
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102 ngx_int_t
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103 ngx_ptocidr(ngx_str_t *text, void *cidr)
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0
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104 {
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400
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105 u_char *addr, *mask, *last;
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106 ngx_int_t shift;
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0
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107 ngx_inet_cidr_t *in_cidr;
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108
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109 in_cidr = cidr;
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400
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110 addr = text->data;
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111 last = addr + text->len;
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0
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112
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400
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113 mask = ngx_strlchr(addr, last, '/');
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0
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114
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400
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115 in_cidr->addr = ngx_inet_addr(addr, (mask ? mask : last) - addr);
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116
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0
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117 if (in_cidr->addr == INADDR_NONE) {
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118 return NGX_ERROR;
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119 }
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120
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400
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121 if (mask == NULL) {
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122 in_cidr->mask = 0xffffffff;
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123 return NGX_OK;
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124 }
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125
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126 mask++;
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127
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128 shift = ngx_atoi(mask, last - mask);
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129 if (shift == NGX_ERROR) {
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0
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130 return NGX_ERROR;
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131 }
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132
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400
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133 if (shift == 0) {
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0
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134
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135 /* the x86 compilers use the shl instruction that shifts by modulo 32 */
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136
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137 in_cidr->mask = 0;
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400
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138
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139 if (in_cidr->addr == 0) {
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140 return NGX_OK;
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141 }
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142
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143 return NGX_DONE;
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0
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144 }
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145
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400
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146 in_cidr->mask = htonl((ngx_uint_t) (0 - (1 << (32 - shift))));
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0
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147
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326
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148 if (in_cidr->addr == (in_cidr->addr & in_cidr->mask)) {
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149 return NGX_OK;
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150 }
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151
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152 in_cidr->addr &= in_cidr->mask;
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153
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154 return NGX_DONE;
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0
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155 }
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156
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157
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200
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158 ngx_int_t
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340
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159 ngx_parse_url(ngx_pool_t *pool, ngx_url_t *u)
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200
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160 {
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400
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161 u_char *p;
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200
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162
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163 p = u->url.data;
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164
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286
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165 if (ngx_strncasecmp(p, (u_char *) "unix:", 5) == 0) {
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400
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166 return ngx_parse_unix_domain_url(pool, u);
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200
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167 }
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168
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169 if ((p[0] == ':' || p[0] == '/') && !u->listen) {
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170 u->err = "invalid host";
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171 return NGX_ERROR;
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172 }
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173
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400
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174 return ngx_parse_inet_url(pool, u);
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175 }
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266
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176
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200
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177
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400
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178 static ngx_int_t
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179 ngx_parse_unix_domain_url(ngx_pool_t *pool, ngx_url_t *u)
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180 {
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181 #if (NGX_HAVE_UNIX_DOMAIN)
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182 u_char *path, *uri, *last;
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183 size_t len;
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184 struct sockaddr_un *saun;
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200
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185
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400
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186 len = u->url.len;
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187 path = u->url.data;
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200
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188
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400
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189 path += 5;
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190 len -= 5;
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191
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192 if (u->uri_part) {
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200
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193
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400
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194 last = path + len;
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195 uri = ngx_strlchr(path, last, ':');
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200
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196
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400
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197 if (uri) {
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198 len = uri - path;
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199 uri++;
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200 u->uri.len = last - uri;
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201 u->uri.data = uri;
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200
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202 }
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203 }
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204
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400
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205 if (len == 0) {
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206 u->err = "no path in the unix domain socket";
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207 return NGX_ERROR;
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208 }
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209
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210 u->host.len = len++;
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211 u->host.data = path;
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212 u->family = AF_UNIX;
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213
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214 if (len > sizeof(saun->sun_path)) {
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215 u->err = "too long path in the unix domain socket";
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216 return NGX_ERROR;
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217 }
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200
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218
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400
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219 u->addrs = ngx_pcalloc(pool, sizeof(ngx_peer_addr_t));
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220 if (u->addrs == NULL) {
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221 return NGX_ERROR;
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222 }
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223
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224 saun = ngx_pcalloc(pool, sizeof(struct sockaddr_un));
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225 if (saun == NULL) {
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226 return NGX_ERROR;
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227 }
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228
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229 u->naddrs = 1;
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230
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231 saun->sun_family = AF_UNIX;
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232 (void) ngx_cpystrn((u_char *) saun->sun_path, path, len);
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233
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234 u->addrs[0].sockaddr = (struct sockaddr *) saun;
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235 u->addrs[0].socklen = sizeof(struct sockaddr_un);
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236 u->addrs[0].name.len = len + 4;
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237 u->addrs[0].name.data = u->url.data;
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200
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238
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400
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239 return NGX_OK;
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240
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241 #else
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242
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243 u->err = "the unix domain sockets are not supported on this platform";
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244
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245 return NGX_ERROR;
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246
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247 #endif
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248 }
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249
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250
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251 static ngx_int_t
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252 ngx_parse_inet_url(ngx_pool_t *pool, ngx_url_t *u)
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253 {
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254 u_char *p, *host, *port, *last, *uri;
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255 size_t len;
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256 ngx_int_t n;
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257 struct hostent *h;
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258
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259 u->family = AF_INET;
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260
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261 host = u->url.data;
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262
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263 last = host + u->url.len;
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264
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265 port = ngx_strlchr(host, last, ':');
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266
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267 uri = ngx_strlchr(port ? port : host, last, '/');
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268
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269 if (uri) {
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270 if (u->listen || !u->uri_part) {
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271 u->err = "invalid host";
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272 return NGX_ERROR;
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200
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273 }
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274
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400
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275 u->uri.len = last - uri;
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276 u->uri.data = uri;
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277
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278 last = uri;
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279 }
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200
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280
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400
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281 if (port) {
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282 port++;
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283
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284 len = last - port;
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285
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286 if (len == 0) {
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200
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287 u->err = "invalid port";
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288 return NGX_ERROR;
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289 }
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290
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400
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291 n = ngx_atoi(port, len);
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200
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292
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400
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293 if (n < 1 || n > 65536) {
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294 u->err = "invalid port";
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295 return NGX_ERROR;
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252
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296 }
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297
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400
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298 u->port = (in_port_t) n;
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252
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299
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400
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300 u->port_text.len = len;
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301 u->port_text.data = port;
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302
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303 last = port - 1;
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252
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304
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400
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305 } else {
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306 if (uri == NULL) {
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252
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307
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400
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308 if (u->listen) {
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252
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309
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400
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310 /* test value as port only */
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311
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312 n = ngx_atoi(host, last - host);
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252
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313
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400
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314 if (n != NGX_ERROR) {
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315
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316 if (n < 1 || n > 65536) {
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317 u->err = "invalid port";
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318 return NGX_ERROR;
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319 }
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252
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320
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400
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321 u->port = (in_port_t) n;
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322
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323 u->port_text.len = last - host;
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324 u->port_text.data = host;
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325
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326 return NGX_OK;
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252
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327 }
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328 }
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329 }
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330
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400
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331 u->no_port = 1;
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200
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332 }
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333
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400
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334 len = last - host;
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335
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336 if (len == 0) {
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200
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337 u->err = "no host";
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338 return NGX_ERROR;
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339 }
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340
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400
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341 if (len == 1 && *host == '*') {
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342 len = 0;
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343 }
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344
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345 u->host.len = len;
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346 u->host.data = host;
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347
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260
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348 if (u->no_resolve) {
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349 return NGX_OK;
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200
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350 }
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351
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400
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352 if (len++) {
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353
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354 p = ngx_alloc(len, pool->log);
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355 if (p == NULL) {
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356 return NGX_ERROR;
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357 }
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358
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359 (void) ngx_cpystrn(p, host, len);
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360
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361 u->addr.in_addr = inet_addr((const char *) p);
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362
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363 if (u->addr.in_addr == INADDR_NONE) {
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364 h = gethostbyname((const char *) p);
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365
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366 if (h == NULL || h->h_addr_list[0] == NULL) {
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367 ngx_free(p);
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368 u->err = "host not found";
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369 return NGX_ERROR;
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370 }
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371
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372 u->addr.in_addr = *(in_addr_t *) (h->h_addr_list[0]);
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373 }
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374
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375 ngx_free(p);
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376
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377 } else {
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378 u->addr.in_addr = INADDR_ANY;
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379 }
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380
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266
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381 if (u->no_port) {
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382 u->port = u->default_port;
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383 }
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384
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400
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385 if (u->listen) {
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386 return NGX_OK;
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266
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387 }
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388
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340
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389 if (ngx_inet_resolve_host(pool, u) != NGX_OK) {
|
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200
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390 return NGX_ERROR;
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391 }
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392
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393 return NGX_OK;
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394 }
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395
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396
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260
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397 ngx_int_t
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340
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398 ngx_inet_resolve_host(ngx_pool_t *pool, ngx_url_t *u)
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200
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399 {
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266
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400 u_char *p, *host;
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200
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401 size_t len;
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402 in_addr_t in_addr;
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403 ngx_uint_t i;
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404 struct hostent *h;
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405 struct sockaddr_in *sin;
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406
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340
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407 host = ngx_alloc(u->host.len + 1, pool->log);
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200
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408 if (host == NULL) {
|
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260
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409 return NGX_ERROR;
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200
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410 }
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411
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260
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412 (void) ngx_cpystrn(host, u->host.data, u->host.len + 1);
|
|
200
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413
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|
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414 /* AF_INET only */
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415
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|
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416 in_addr = inet_addr((char *) host);
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417
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|
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418 if (in_addr == INADDR_NONE) {
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419 h = gethostbyname((char *) host);
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420
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340
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421 ngx_free(host);
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422
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200
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423 if (h == NULL || h->h_addr_list[0] == NULL) {
|
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260
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424 u->err = "host not found";
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|
425 return NGX_ERROR;
|
|
200
|
426 }
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427
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260
|
428 if (u->one_addr == 0) {
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429 for (i = 0; h->h_addr_list[i] != NULL; i++) { /* void */ }
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|
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430
|
|
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431 } else {
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|
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432 i = 1;
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433 }
|
|
200
|
434
|
|
|
435 /* MP: ngx_shared_palloc() */
|
|
|
436
|
|
340
|
437 u->addrs = ngx_pcalloc(pool, i * sizeof(ngx_peer_addr_t));
|
|
260
|
438 if (u->addrs == NULL) {
|
|
|
439 return NGX_ERROR;
|
|
200
|
440 }
|
|
|
441
|
|
260
|
442 u->naddrs = i;
|
|
200
|
443
|
|
|
444 for (i = 0; h->h_addr_list[i] != NULL; i++) {
|
|
|
445
|
|
340
|
446 sin = ngx_pcalloc(pool, sizeof(struct sockaddr_in));
|
|
200
|
447 if (sin == NULL) {
|
|
260
|
448 return NGX_ERROR;
|
|
200
|
449 }
|
|
|
450
|
|
|
451 sin->sin_family = AF_INET;
|
|
266
|
452 sin->sin_port = htons(u->port);
|
|
200
|
453 sin->sin_addr.s_addr = *(in_addr_t *) (h->h_addr_list[i]);
|
|
|
454
|
|
260
|
455 u->addrs[i].sockaddr = (struct sockaddr *) sin;
|
|
|
456 u->addrs[i].socklen = sizeof(struct sockaddr_in);
|
|
200
|
457
|
|
400
|
458 len = NGX_INET_ADDRSTRLEN + sizeof(":65536") - 1;
|
|
200
|
459
|
|
382
|
460 p = ngx_pnalloc(pool, len);
|
|
266
|
461 if (p == NULL) {
|
|
260
|
462 return NGX_ERROR;
|
|
200
|
463 }
|
|
|
464
|
|
400
|
465 len = ngx_sock_ntop((struct sockaddr *) sin, p, len);
|
|
200
|
466
|
|
266
|
467 u->addrs[i].name.len = ngx_sprintf(&p[len], ":%d", u->port) - p;
|
|
|
468 u->addrs[i].name.data = p;
|
|
200
|
469 }
|
|
|
470
|
|
|
471 } else {
|
|
|
472
|
|
340
|
473 ngx_free(host);
|
|
|
474
|
|
200
|
475 /* MP: ngx_shared_palloc() */
|
|
|
476
|
|
340
|
477 u->addrs = ngx_pcalloc(pool, sizeof(ngx_peer_addr_t));
|
|
260
|
478 if (u->addrs == NULL) {
|
|
|
479 return NGX_ERROR;
|
|
200
|
480 }
|
|
|
481
|
|
340
|
482 sin = ngx_pcalloc(pool, sizeof(struct sockaddr_in));
|
|
200
|
483 if (sin == NULL) {
|
|
260
|
484 return NGX_ERROR;
|
|
200
|
485 }
|
|
|
486
|
|
260
|
487 u->naddrs = 1;
|
|
200
|
488
|
|
|
489 sin->sin_family = AF_INET;
|
|
266
|
490 sin->sin_port = htons(u->port);
|
|
200
|
491 sin->sin_addr.s_addr = in_addr;
|
|
|
492
|
|
260
|
493 u->addrs[0].sockaddr = (struct sockaddr *) sin;
|
|
|
494 u->addrs[0].socklen = sizeof(struct sockaddr_in);
|
|
200
|
495
|
|
382
|
496 p = ngx_pnalloc(pool, u->host.len + sizeof(":65536") - 1);
|
|
266
|
497 if (p == NULL) {
|
|
260
|
498 return NGX_ERROR;
|
|
200
|
499 }
|
|
|
500
|
|
266
|
501 u->addrs[0].name.len = ngx_sprintf(p, "%V:%d", &u->host, u->port) - p;
|
|
|
502 u->addrs[0].name.data = p;
|
|
200
|
503 }
|
|
|
504
|
|
260
|
505 return NGX_OK;
|
|
200
|
506 }
|
