290
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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 #include <ngx_event.h>
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10 #include <ngx_mail.h>
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11
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12
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13 static void *ngx_mail_core_create_main_conf(ngx_conf_t *cf);
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14 static void *ngx_mail_core_create_srv_conf(ngx_conf_t *cf);
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15 static char *ngx_mail_core_merge_srv_conf(ngx_conf_t *cf, void *parent,
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16 void *child);
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17 static char *ngx_mail_core_server(ngx_conf_t *cf, ngx_command_t *cmd,
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18 void *conf);
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19 static char *ngx_mail_core_listen(ngx_conf_t *cf, ngx_command_t *cmd,
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20 void *conf);
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336
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21 static char *ngx_mail_core_protocol(ngx_conf_t *cf, ngx_command_t *cmd,
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290
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22 void *conf);
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366
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23 static char *ngx_mail_core_resolver(ngx_conf_t *cf, ngx_command_t *cmd,
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24 void *conf);
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290
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25
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26
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27 static ngx_command_t ngx_mail_core_commands[] = {
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28
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29 { ngx_string("server"),
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30 NGX_MAIL_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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31 ngx_mail_core_server,
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32 0,
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33 0,
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34 NULL },
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35
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36 { ngx_string("listen"),
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37 NGX_MAIL_SRV_CONF|NGX_CONF_TAKE12,
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38 ngx_mail_core_listen,
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336
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39 NGX_MAIL_SRV_CONF_OFFSET,
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290
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40 0,
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41 NULL },
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42
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43 { ngx_string("protocol"),
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44 NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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336
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45 ngx_mail_core_protocol,
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290
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46 NGX_MAIL_SRV_CONF_OFFSET,
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336
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47 0,
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290
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48 NULL },
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49
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50 { ngx_string("so_keepalive"),
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51 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_FLAG,
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52 ngx_conf_set_flag_slot,
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53 NGX_MAIL_SRV_CONF_OFFSET,
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54 offsetof(ngx_mail_core_srv_conf_t, so_keepalive),
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55 NULL },
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56
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57 { ngx_string("timeout"),
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58 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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59 ngx_conf_set_msec_slot,
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60 NGX_MAIL_SRV_CONF_OFFSET,
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61 offsetof(ngx_mail_core_srv_conf_t, timeout),
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62 NULL },
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63
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64 { ngx_string("server_name"),
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65 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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66 ngx_conf_set_str_slot,
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67 NGX_MAIL_SRV_CONF_OFFSET,
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68 offsetof(ngx_mail_core_srv_conf_t, server_name),
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69 NULL },
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70
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366
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71 { ngx_string("resolver"),
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72 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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73 ngx_mail_core_resolver,
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74 NGX_MAIL_SRV_CONF_OFFSET,
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75 0,
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76 NULL },
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77
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78 { ngx_string("resolver_timeout"),
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79 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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80 ngx_conf_set_msec_slot,
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81 NGX_MAIL_SRV_CONF_OFFSET,
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82 offsetof(ngx_mail_core_srv_conf_t, resolver_timeout),
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83 NULL },
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84
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290
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85 ngx_null_command
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86 };
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87
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88
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89 static ngx_mail_module_t ngx_mail_core_module_ctx = {
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336
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90 NULL, /* protocol */
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91
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290
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92 ngx_mail_core_create_main_conf, /* create main configuration */
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93 NULL, /* init main configuration */
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94
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95 ngx_mail_core_create_srv_conf, /* create server configuration */
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96 ngx_mail_core_merge_srv_conf /* merge server configuration */
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97 };
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98
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99
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100 ngx_module_t ngx_mail_core_module = {
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101 NGX_MODULE_V1,
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102 &ngx_mail_core_module_ctx, /* module context */
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103 ngx_mail_core_commands, /* module directives */
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104 NGX_MAIL_MODULE, /* module type */
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105 NULL, /* init master */
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106 NULL, /* init module */
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107 NULL, /* init process */
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108 NULL, /* init thread */
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109 NULL, /* exit thread */
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110 NULL, /* exit process */
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111 NULL, /* exit master */
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112 NGX_MODULE_V1_PADDING
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113 };
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114
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115
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116 static void *
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117 ngx_mail_core_create_main_conf(ngx_conf_t *cf)
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118 {
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119 ngx_mail_core_main_conf_t *cmcf;
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120
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121 cmcf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_core_main_conf_t));
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122 if (cmcf == NULL) {
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123 return NGX_CONF_ERROR;
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124 }
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125
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126 if (ngx_array_init(&cmcf->servers, cf->pool, 4,
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127 sizeof(ngx_mail_core_srv_conf_t *))
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128 != NGX_OK)
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129 {
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130 return NGX_CONF_ERROR;
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131 }
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132
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133 if (ngx_array_init(&cmcf->listen, cf->pool, 4, sizeof(ngx_mail_listen_t))
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134 != NGX_OK)
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135 {
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136 return NGX_CONF_ERROR;
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137 }
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138
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139 return cmcf;
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140 }
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141
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142
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143 static void *
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144 ngx_mail_core_create_srv_conf(ngx_conf_t *cf)
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145 {
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146 ngx_mail_core_srv_conf_t *cscf;
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147
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148 cscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_core_srv_conf_t));
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149 if (cscf == NULL) {
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150 return NULL;
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151 }
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152
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336
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153 /*
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154 * set by ngx_pcalloc():
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155 *
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156 * cscf->protocol = NULL;
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157 */
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158
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159 cscf->timeout = NGX_CONF_UNSET_MSEC;
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160 cscf->resolver_timeout = NGX_CONF_UNSET_MSEC;
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161 cscf->so_keepalive = NGX_CONF_UNSET;
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162
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366
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163 cscf->resolver = NGX_CONF_UNSET_PTR;
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164
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165 cscf->file_name = cf->conf_file->file.name.data;
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166 cscf->line = cf->conf_file->line;
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167
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290
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168 return cscf;
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169 }
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170
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171
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172 static char *
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173 ngx_mail_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
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174 {
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175 ngx_mail_core_srv_conf_t *prev = parent;
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176 ngx_mail_core_srv_conf_t *conf = child;
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177
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178 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000);
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366
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179 ngx_conf_merge_msec_value(conf->resolver_timeout, prev->resolver_timeout,
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180 30000);
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181
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336
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182 ngx_conf_merge_value(conf->so_keepalive, prev->so_keepalive, 0);
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183
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184
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185 ngx_conf_merge_str_value(conf->server_name, prev->server_name, "");
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186
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187 if (conf->server_name.len == 0) {
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376
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188 conf->server_name = cf->cycle->hostname;
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290
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189 }
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190
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336
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191 if (conf->protocol == NULL) {
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192 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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193 "unknown mail protocol for server in %s:%ui",
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194 conf->file_name, conf->line);
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195 return NGX_CONF_ERROR;
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196 }
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197
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366
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198 ngx_conf_merge_ptr_value(conf->resolver, prev->resolver, NULL);
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199
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290
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200 return NGX_CONF_OK;
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201 }
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202
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203
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204 static char *
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205 ngx_mail_core_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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206 {
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207 char *rv;
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208 void *mconf;
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209 ngx_uint_t m;
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210 ngx_conf_t pcf;
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211 ngx_mail_module_t *module;
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212 ngx_mail_conf_ctx_t *ctx, *mail_ctx;
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213 ngx_mail_core_srv_conf_t *cscf, **cscfp;
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214 ngx_mail_core_main_conf_t *cmcf;
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215
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216 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_mail_conf_ctx_t));
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217 if (ctx == NULL) {
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218 return NGX_CONF_ERROR;
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219 }
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220
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221 mail_ctx = cf->ctx;
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222 ctx->main_conf = mail_ctx->main_conf;
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223
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224 /* the server{}'s srv_conf */
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225
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226 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_mail_max_module);
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227 if (ctx->srv_conf == NULL) {
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228 return NGX_CONF_ERROR;
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229 }
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230
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231 for (m = 0; ngx_modules[m]; m++) {
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232 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
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233 continue;
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234 }
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235
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236 module = ngx_modules[m]->ctx;
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237
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238 if (module->create_srv_conf) {
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239 mconf = module->create_srv_conf(cf);
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240 if (mconf == NULL) {
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241 return NGX_CONF_ERROR;
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242 }
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243
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244 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
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245 }
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246 }
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247
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248 /* the server configuration context */
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249
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250 cscf = ctx->srv_conf[ngx_mail_core_module.ctx_index];
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251 cscf->ctx = ctx;
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252
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253 cmcf = ctx->main_conf[ngx_mail_core_module.ctx_index];
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254
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255 cscfp = ngx_array_push(&cmcf->servers);
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256 if (cscfp == NULL) {
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257 return NGX_CONF_ERROR;
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258 }
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259
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260 *cscfp = cscf;
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261
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262
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263 /* parse inside server{} */
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264
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265 pcf = *cf;
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266 cf->ctx = ctx;
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267 cf->cmd_type = NGX_MAIL_SRV_CONF;
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268
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269 rv = ngx_conf_parse(cf, NULL);
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270
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271 *cf = pcf;
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272
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273 return rv;
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274 }
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275
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276
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277 static char *
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278 ngx_mail_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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279 {
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280 ngx_mail_core_srv_conf_t *cscf = conf;
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281
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501
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282 size_t len, off;
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283 in_port_t port;
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284 ngx_str_t *value;
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285 ngx_url_t u;
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286 ngx_uint_t i, m;
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287 struct sockaddr *sa;
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288 ngx_mail_listen_t *ls;
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336
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289 ngx_mail_module_t *module;
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501
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290 struct sockaddr_in *sin;
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290
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291 ngx_mail_core_main_conf_t *cmcf;
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501
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292 #if (NGX_HAVE_INET6)
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293 struct sockaddr_in6 *sin6;
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294 #endif
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290
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295
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296 value = cf->args->elts;
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297
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298 ngx_memzero(&u, sizeof(ngx_url_t));
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299
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300 u.url = value[1];
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301 u.listen = 1;
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302
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340
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303 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
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290
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304 if (u.err) {
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305 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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306 "%s in \"%V\" of the \"listen\" directive",
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307 u.err, &u.url);
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308 }
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309
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310 return NGX_CONF_ERROR;
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311 }
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312
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313 cmcf = ngx_mail_conf_get_module_main_conf(cf, ngx_mail_core_module);
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314
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315 ls = cmcf->listen.elts;
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290
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316
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317 for (i = 0; i < cmcf->listen.nelts; i++) {
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318
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501
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319 sa = (struct sockaddr *) ls[i].sockaddr;
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320
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321 if (sa->sa_family != u.family) {
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322 continue;
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323 }
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324
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325 switch (sa->sa_family) {
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326
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327 #if (NGX_HAVE_INET6)
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328 case AF_INET6:
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329 off = offsetof(struct sockaddr_in6, sin6_addr);
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330 len = 16;
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331 sin6 = (struct sockaddr_in6 *) sa;
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332 port = sin6->sin6_port;
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333 break;
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334 #endif
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335
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336 default: /* AF_INET */
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337 off = offsetof(struct sockaddr_in, sin_addr);
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338 len = 4;
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339 sin = (struct sockaddr_in *) sa;
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340 port = sin->sin_port;
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341 break;
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342 }
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343
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344 if (ngx_memcmp(ls[i].sockaddr + off, u.sockaddr + off, len) != 0) {
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345 continue;
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346 }
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347
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348 if (port != u.port) {
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290
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349 continue;
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350 }
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351
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352 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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353 "duplicate \"%V\" address and port pair", &u.url);
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354 return NGX_CONF_ERROR;
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355 }
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356
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495
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357 ls = ngx_array_push(&cmcf->listen);
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358 if (ls == NULL) {
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290
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359 return NGX_CONF_ERROR;
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360 }
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361
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495
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362 ngx_memzero(ls, sizeof(ngx_mail_listen_t));
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290
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363
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501
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364 ngx_memcpy(ls->sockaddr, u.sockaddr, u.socklen);
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365
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366 ls->socklen = u.socklen;
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367 ls->wildcard = u.wildcard;
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495
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368 ls->ctx = cf->ctx;
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290
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369
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336
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370 for (m = 0; ngx_modules[m]; m++) {
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371 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
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372 continue;
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373 }
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374
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375 module = ngx_modules[m]->ctx;
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376
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377 if (module->protocol == NULL) {
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378 continue;
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379 }
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380
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381 for (i = 0; module->protocol->port[i]; i++) {
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382 if (module->protocol->port[i] == u.port) {
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383 cscf->protocol = module->protocol;
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384 break;
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385 }
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386 }
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387 }
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388
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410
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389 for (i = 2; i < cf->args->nelts; i++) {
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390
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391 if (ngx_strcmp(value[i].data, "bind") == 0) {
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495
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392 ls->bind = 1;
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410
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393 continue;
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394 }
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395
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501
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396 if (ngx_strncmp(value[i].data, "ipv6only=o", 10) == 0) {
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397 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
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398 struct sockaddr *sa;
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399 u_char buf[NGX_SOCKADDR_STRLEN];
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400
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401 sa = (struct sockaddr *) ls->sockaddr;
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402
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403 if (sa->sa_family == AF_INET6) {
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404
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405 if (ngx_strcmp(&value[i].data[10], "n") == 0) {
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406 ls->ipv6only = 1;
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407
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408 } else if (ngx_strcmp(&value[i].data[10], "ff") == 0) {
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409 ls->ipv6only = 2;
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410
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411 } else {
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412 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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413 "invalid ipv6only flags \"%s\"",
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414 &value[i].data[9]);
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415 return NGX_CONF_ERROR;
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416 }
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417
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418 ls->bind = 1;
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419
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420 } else {
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421 len = ngx_sock_ntop(sa, buf, NGX_SOCKADDR_STRLEN, 1);
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422
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423 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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424 "ipv6only is not supported "
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425 "on addr \"%*s\", ignored", len, buf);
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426 }
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427
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428 continue;
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429 #else
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430 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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431 "bind ipv6only is not supported "
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432 "on this platform");
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433 return NGX_CONF_ERROR;
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434 #endif
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435 }
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436
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410
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437 if (ngx_strcmp(value[i].data, "ssl") == 0) {
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438 #if (NGX_MAIL_SSL)
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495
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439 ls->ssl = 1;
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410
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440 continue;
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441 #else
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442 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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443 "the \"ssl\" parameter requires "
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444 "ngx_mail_ssl_module");
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445 return NGX_CONF_ERROR;
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446 #endif
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447 }
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448
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449 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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450 "the invalid \"%V\" parameter", &value[i]);
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451 return NGX_CONF_ERROR;
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290
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452 }
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453
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410
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454 return NGX_CONF_OK;
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290
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455 }
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456
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457
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458 static char *
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336
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459 ngx_mail_core_protocol(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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460 {
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461 ngx_mail_core_srv_conf_t *cscf = conf;
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462
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463 ngx_str_t *value;
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464 ngx_uint_t m;
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465 ngx_mail_module_t *module;
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466
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467 value = cf->args->elts;
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468
|
|
469 for (m = 0; ngx_modules[m]; m++) {
|
|
470 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
|
|
471 continue;
|
|
472 }
|
|
473
|
|
474 module = ngx_modules[m]->ctx;
|
|
475
|
|
476 if (module->protocol
|
|
477 && ngx_strcmp(module->protocol->name.data, value[1].data) == 0)
|
|
478 {
|
|
479 cscf->protocol = module->protocol;
|
|
480
|
|
481 return NGX_CONF_OK;
|
|
482 }
|
|
483 }
|
|
484
|
|
485 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
486 "unknown protocol \"%V\"", &value[1]);
|
|
487 return NGX_CONF_ERROR;
|
|
488 }
|
|
489
|
|
490
|
366
|
491 static char *
|
|
492 ngx_mail_core_resolver(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
493 {
|
|
494 ngx_mail_core_srv_conf_t *cscf = conf;
|
|
495
|
|
496 ngx_url_t u;
|
|
497 ngx_str_t *value;
|
|
498
|
|
499 value = cf->args->elts;
|
|
500
|
|
501 if (cscf->resolver != NGX_CONF_UNSET_PTR) {
|
|
502 return "is duplicate";
|
|
503 }
|
|
504
|
|
505 if (ngx_strcmp(value[1].data, "off") == 0) {
|
|
506 cscf->resolver = NULL;
|
|
507 return NGX_CONF_OK;
|
|
508 }
|
|
509
|
|
510 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
511
|
|
512 u.host = value[1];
|
|
513 u.port = 53;
|
|
514
|
|
515 if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) {
|
|
516 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%V: %s", &u.host, u.err);
|
|
517 return NGX_CONF_ERROR;
|
|
518 }
|
|
519
|
|
520 cscf->resolver = ngx_resolver_create(cf, &u.addrs[0]);
|
|
521 if (cscf->resolver == NULL) {
|
|
522 return NGX_CONF_OK;
|
|
523 }
|
|
524
|
|
525 return NGX_CONF_OK;
|
|
526 }
|
|
527
|
|
528
|
336
|
529 char *
|
|
530 ngx_mail_capabilities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
290
|
531 {
|
|
532 char *p = conf;
|
|
533
|
|
534 ngx_str_t *c, *value;
|
|
535 ngx_uint_t i;
|
|
536 ngx_array_t *a;
|
|
537
|
|
538 a = (ngx_array_t *) (p + cmd->offset);
|
|
539
|
|
540 value = cf->args->elts;
|
|
541
|
|
542 for (i = 1; i < cf->args->nelts; i++) {
|
|
543 c = ngx_array_push(a);
|
|
544 if (c == NULL) {
|
|
545 return NGX_CONF_ERROR;
|
|
546 }
|
|
547
|
|
548 *c = value[i];
|
|
549 }
|
|
550
|
|
551 return NGX_CONF_OK;
|
|
552 }
|