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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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290
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159 cscf->timeout = NGX_CONF_UNSET_MSEC;
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366
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160 cscf->resolver_timeout = NGX_CONF_UNSET_MSEC;
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290
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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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290
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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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290
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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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290
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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 /* AF_INET only */
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278
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279 static char *
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280 ngx_mail_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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281 {
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336
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282 ngx_mail_core_srv_conf_t *cscf = conf;
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283
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290
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284 ngx_str_t *value;
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285 ngx_url_t u;
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336
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286 ngx_uint_t i, m;
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290
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287 ngx_mail_listen_t *imls;
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336
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288 ngx_mail_module_t *module;
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290
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289 ngx_mail_core_main_conf_t *cmcf;
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290
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291 value = cf->args->elts;
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292
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293 ngx_memzero(&u, sizeof(ngx_url_t));
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294
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295 u.url = value[1];
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296 u.listen = 1;
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297
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340
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298 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
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290
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299 if (u.err) {
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300 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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301 "%s in \"%V\" of the \"listen\" directive",
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302 u.err, &u.url);
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303 }
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304
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305 return NGX_CONF_ERROR;
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306 }
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307
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308 cmcf = ngx_mail_conf_get_module_main_conf(cf, ngx_mail_core_module);
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309
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310 imls = cmcf->listen.elts;
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311
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312 for (i = 0; i < cmcf->listen.nelts; i++) {
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313
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314 if (imls[i].addr != u.addr.in_addr || imls[i].port != u.port) {
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315 continue;
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316 }
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317
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318 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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319 "duplicate \"%V\" address and port pair", &u.url);
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320 return NGX_CONF_ERROR;
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321 }
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322
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323 imls = ngx_array_push(&cmcf->listen);
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324 if (imls == NULL) {
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325 return NGX_CONF_ERROR;
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326 }
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327
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328 ngx_memzero(imls, sizeof(ngx_mail_listen_t));
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329
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330 imls->addr = u.addr.in_addr;
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331 imls->port = u.port;
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332 imls->family = AF_INET;
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333 imls->ctx = cf->ctx;
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334
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336
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335 for (m = 0; ngx_modules[m]; m++) {
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336 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
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337 continue;
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338 }
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339
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340 module = ngx_modules[m]->ctx;
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341
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342 if (module->protocol == NULL) {
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343 continue;
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344 }
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345
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346 for (i = 0; module->protocol->port[i]; i++) {
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347 if (module->protocol->port[i] == u.port) {
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348 cscf->protocol = module->protocol;
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349 break;
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350 }
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351 }
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352 }
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353
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290
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354 if (cf->args->nelts == 2) {
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355 return NGX_CONF_OK;
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356 }
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357
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358 if (ngx_strcmp(value[2].data, "bind") == 0) {
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359 imls->bind = 1;
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360 return NGX_CONF_OK;
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361 }
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362
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363 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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364 "the invalid \"%V\" parameter", &value[2]);
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365 return NGX_CONF_ERROR;
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366 }
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367
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368
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369 static char *
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336
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370 ngx_mail_core_protocol(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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371 {
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372 ngx_mail_core_srv_conf_t *cscf = conf;
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373
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374 ngx_str_t *value;
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375 ngx_uint_t m;
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376 ngx_mail_module_t *module;
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377
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378 value = cf->args->elts;
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379
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380 for (m = 0; ngx_modules[m]; m++) {
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381 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
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382 continue;
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383 }
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384
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385 module = ngx_modules[m]->ctx;
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386
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387 if (module->protocol
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388 && ngx_strcmp(module->protocol->name.data, value[1].data) == 0)
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389 {
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390 cscf->protocol = module->protocol;
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391
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392 return NGX_CONF_OK;
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393 }
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394 }
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395
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396 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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397 "unknown protocol \"%V\"", &value[1]);
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398 return NGX_CONF_ERROR;
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399 }
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400
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401
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366
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402 static char *
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403 ngx_mail_core_resolver(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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404 {
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405 ngx_mail_core_srv_conf_t *cscf = conf;
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406
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407 ngx_url_t u;
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408 ngx_str_t *value;
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409
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410 value = cf->args->elts;
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411
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412 if (cscf->resolver != NGX_CONF_UNSET_PTR) {
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413 return "is duplicate";
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414 }
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415
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416 if (ngx_strcmp(value[1].data, "off") == 0) {
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417 cscf->resolver = NULL;
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418 return NGX_CONF_OK;
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419 }
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420
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421 ngx_memzero(&u, sizeof(ngx_url_t));
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422
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423 u.host = value[1];
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424 u.port = 53;
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425
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426 if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) {
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427 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%V: %s", &u.host, u.err);
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428 return NGX_CONF_ERROR;
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429 }
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430
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431 cscf->resolver = ngx_resolver_create(cf, &u.addrs[0]);
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432 if (cscf->resolver == NULL) {
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433 return NGX_CONF_OK;
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434 }
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435
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436 return NGX_CONF_OK;
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437 }
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438
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439
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336
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440 char *
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441 ngx_mail_capabilities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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290
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442 {
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443 char *p = conf;
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444
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445 ngx_str_t *c, *value;
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446 ngx_uint_t i;
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447 ngx_array_t *a;
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448
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449 a = (ngx_array_t *) (p + cmd->offset);
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450
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451 value = cf->args->elts;
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452
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453 for (i = 1; i < cf->args->nelts; i++) {
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454 c = ngx_array_push(a);
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455 if (c == NULL) {
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456 return NGX_CONF_ERROR;
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457 }
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458
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459 *c = value[i];
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460 }
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461
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462 return NGX_CONF_OK;
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463 }
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