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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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644
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4 * Copyright (C) Nginx, Inc.
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290
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_event.h>
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11 #include <ngx_mail.h>
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12
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13
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14 static void *ngx_mail_core_create_main_conf(ngx_conf_t *cf);
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15 static void *ngx_mail_core_create_srv_conf(ngx_conf_t *cf);
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16 static char *ngx_mail_core_merge_srv_conf(ngx_conf_t *cf, void *parent,
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17 void *child);
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18 static char *ngx_mail_core_server(ngx_conf_t *cf, ngx_command_t *cmd,
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19 void *conf);
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20 static char *ngx_mail_core_listen(ngx_conf_t *cf, ngx_command_t *cmd,
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21 void *conf);
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336
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22 static char *ngx_mail_core_protocol(ngx_conf_t *cf, ngx_command_t *cmd,
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290
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23 void *conf);
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366
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24 static char *ngx_mail_core_resolver(ngx_conf_t *cf, ngx_command_t *cmd,
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25 void *conf);
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290
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26
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27
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28 static ngx_command_t ngx_mail_core_commands[] = {
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29
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30 { ngx_string("server"),
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31 NGX_MAIL_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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32 ngx_mail_core_server,
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33 0,
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34 0,
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35 NULL },
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36
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37 { ngx_string("listen"),
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38 NGX_MAIL_SRV_CONF|NGX_CONF_TAKE12,
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39 ngx_mail_core_listen,
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336
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40 NGX_MAIL_SRV_CONF_OFFSET,
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290
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41 0,
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42 NULL },
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43
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44 { ngx_string("protocol"),
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45 NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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336
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46 ngx_mail_core_protocol,
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290
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47 NGX_MAIL_SRV_CONF_OFFSET,
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336
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48 0,
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290
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49 NULL },
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50
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51 { ngx_string("so_keepalive"),
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52 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_FLAG,
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53 ngx_conf_set_flag_slot,
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54 NGX_MAIL_SRV_CONF_OFFSET,
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55 offsetof(ngx_mail_core_srv_conf_t, so_keepalive),
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56 NULL },
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57
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58 { ngx_string("timeout"),
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59 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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60 ngx_conf_set_msec_slot,
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61 NGX_MAIL_SRV_CONF_OFFSET,
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62 offsetof(ngx_mail_core_srv_conf_t, timeout),
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63 NULL },
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64
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65 { ngx_string("server_name"),
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66 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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67 ngx_conf_set_str_slot,
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68 NGX_MAIL_SRV_CONF_OFFSET,
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69 offsetof(ngx_mail_core_srv_conf_t, server_name),
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70 NULL },
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71
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366
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72 { ngx_string("resolver"),
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73 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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74 ngx_mail_core_resolver,
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75 NGX_MAIL_SRV_CONF_OFFSET,
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76 0,
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77 NULL },
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78
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79 { ngx_string("resolver_timeout"),
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80 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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81 ngx_conf_set_msec_slot,
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82 NGX_MAIL_SRV_CONF_OFFSET,
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83 offsetof(ngx_mail_core_srv_conf_t, resolver_timeout),
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84 NULL },
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85
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290
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86 ngx_null_command
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87 };
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88
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89
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90 static ngx_mail_module_t ngx_mail_core_module_ctx = {
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336
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91 NULL, /* protocol */
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92
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290
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93 ngx_mail_core_create_main_conf, /* create main configuration */
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94 NULL, /* init main configuration */
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95
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96 ngx_mail_core_create_srv_conf, /* create server configuration */
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97 ngx_mail_core_merge_srv_conf /* merge server configuration */
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98 };
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99
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100
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101 ngx_module_t ngx_mail_core_module = {
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102 NGX_MODULE_V1,
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103 &ngx_mail_core_module_ctx, /* module context */
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104 ngx_mail_core_commands, /* module directives */
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105 NGX_MAIL_MODULE, /* module type */
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106 NULL, /* init master */
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107 NULL, /* init module */
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108 NULL, /* init process */
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109 NULL, /* init thread */
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110 NULL, /* exit thread */
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111 NULL, /* exit process */
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112 NULL, /* exit master */
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113 NGX_MODULE_V1_PADDING
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114 };
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115
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116
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117 static void *
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118 ngx_mail_core_create_main_conf(ngx_conf_t *cf)
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119 {
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120 ngx_mail_core_main_conf_t *cmcf;
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121
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122 cmcf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_core_main_conf_t));
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123 if (cmcf == NULL) {
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496
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124 return NULL;
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290
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125 }
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126
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127 if (ngx_array_init(&cmcf->servers, cf->pool, 4,
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128 sizeof(ngx_mail_core_srv_conf_t *))
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129 != NGX_OK)
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130 {
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496
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131 return NULL;
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290
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132 }
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133
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134 if (ngx_array_init(&cmcf->listen, cf->pool, 4, sizeof(ngx_mail_listen_t))
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135 != NGX_OK)
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136 {
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496
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137 return NULL;
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290
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138 }
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139
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140 return cmcf;
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141 }
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142
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143
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144 static void *
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145 ngx_mail_core_create_srv_conf(ngx_conf_t *cf)
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146 {
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147 ngx_mail_core_srv_conf_t *cscf;
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148
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149 cscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_core_srv_conf_t));
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150 if (cscf == NULL) {
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151 return NULL;
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152 }
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153
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336
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154 /*
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155 * set by ngx_pcalloc():
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156 *
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157 * cscf->protocol = NULL;
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158 */
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159
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290
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160 cscf->timeout = NGX_CONF_UNSET_MSEC;
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366
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161 cscf->resolver_timeout = NGX_CONF_UNSET_MSEC;
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290
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162 cscf->so_keepalive = NGX_CONF_UNSET;
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163
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366
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164 cscf->resolver = NGX_CONF_UNSET_PTR;
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165
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166 cscf->file_name = cf->conf_file->file.name.data;
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167 cscf->line = cf->conf_file->line;
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168
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290
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169 return cscf;
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170 }
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171
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172
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173 static char *
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174 ngx_mail_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
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175 {
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176 ngx_mail_core_srv_conf_t *prev = parent;
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177 ngx_mail_core_srv_conf_t *conf = child;
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178
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179 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000);
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366
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180 ngx_conf_merge_msec_value(conf->resolver_timeout, prev->resolver_timeout,
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181 30000);
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290
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182
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336
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183 ngx_conf_merge_value(conf->so_keepalive, prev->so_keepalive, 0);
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290
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184
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185
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186 ngx_conf_merge_str_value(conf->server_name, prev->server_name, "");
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187
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188 if (conf->server_name.len == 0) {
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376
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189 conf->server_name = cf->cycle->hostname;
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290
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190 }
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191
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336
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192 if (conf->protocol == NULL) {
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193 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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194 "unknown mail protocol for server in %s:%ui",
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195 conf->file_name, conf->line);
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290
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196 return NGX_CONF_ERROR;
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197 }
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198
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366
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199 ngx_conf_merge_ptr_value(conf->resolver, prev->resolver, NULL);
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200
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290
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201 return NGX_CONF_OK;
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202 }
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203
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204
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205 static char *
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206 ngx_mail_core_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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207 {
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208 char *rv;
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209 void *mconf;
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210 ngx_uint_t m;
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211 ngx_conf_t pcf;
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212 ngx_mail_module_t *module;
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213 ngx_mail_conf_ctx_t *ctx, *mail_ctx;
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214 ngx_mail_core_srv_conf_t *cscf, **cscfp;
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215 ngx_mail_core_main_conf_t *cmcf;
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216
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217 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_mail_conf_ctx_t));
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218 if (ctx == NULL) {
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219 return NGX_CONF_ERROR;
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220 }
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221
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222 mail_ctx = cf->ctx;
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223 ctx->main_conf = mail_ctx->main_conf;
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224
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225 /* the server{}'s srv_conf */
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226
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227 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_mail_max_module);
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228 if (ctx->srv_conf == NULL) {
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229 return NGX_CONF_ERROR;
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230 }
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231
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232 for (m = 0; ngx_modules[m]; m++) {
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233 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
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234 continue;
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235 }
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236
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237 module = ngx_modules[m]->ctx;
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238
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239 if (module->create_srv_conf) {
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240 mconf = module->create_srv_conf(cf);
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241 if (mconf == NULL) {
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242 return NGX_CONF_ERROR;
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243 }
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244
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245 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
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246 }
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247 }
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248
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249 /* the server configuration context */
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250
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251 cscf = ctx->srv_conf[ngx_mail_core_module.ctx_index];
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252 cscf->ctx = ctx;
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253
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254 cmcf = ctx->main_conf[ngx_mail_core_module.ctx_index];
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255
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256 cscfp = ngx_array_push(&cmcf->servers);
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257 if (cscfp == NULL) {
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258 return NGX_CONF_ERROR;
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259 }
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260
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261 *cscfp = cscf;
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262
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263
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264 /* parse inside server{} */
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265
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266 pcf = *cf;
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267 cf->ctx = ctx;
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268 cf->cmd_type = NGX_MAIL_SRV_CONF;
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269
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270 rv = ngx_conf_parse(cf, NULL);
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271
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272 *cf = pcf;
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273
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274 return rv;
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275 }
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276
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277
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278 static char *
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279 ngx_mail_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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280 {
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336
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281 ngx_mail_core_srv_conf_t *cscf = conf;
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282
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492
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283 size_t len, off;
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284 in_port_t port;
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290
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285 ngx_str_t *value;
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286 ngx_url_t u;
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336
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287 ngx_uint_t i, m;
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492
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288 struct sockaddr *sa;
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486
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289 ngx_mail_listen_t *ls;
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336
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290 ngx_mail_module_t *module;
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492
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291 struct sockaddr_in *sin;
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290
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292 ngx_mail_core_main_conf_t *cmcf;
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492
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293 #if (NGX_HAVE_INET6)
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294 struct sockaddr_in6 *sin6;
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295 #endif
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290
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296
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297 value = cf->args->elts;
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298
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299 ngx_memzero(&u, sizeof(ngx_url_t));
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300
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301 u.url = value[1];
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302 u.listen = 1;
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303
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340
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304 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
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290
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305 if (u.err) {
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306 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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307 "%s in \"%V\" of the \"listen\" directive",
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308 u.err, &u.url);
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309 }
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310
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311 return NGX_CONF_ERROR;
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312 }
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313
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314 cmcf = ngx_mail_conf_get_module_main_conf(cf, ngx_mail_core_module);
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315
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486
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316 ls = cmcf->listen.elts;
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290
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317
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318 for (i = 0; i < cmcf->listen.nelts; i++) {
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319
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492
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320 sa = (struct sockaddr *) ls[i].sockaddr;
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321
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322 if (sa->sa_family != u.family) {
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323 continue;
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324 }
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325
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326 switch (sa->sa_family) {
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327
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328 #if (NGX_HAVE_INET6)
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329 case AF_INET6:
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330 off = offsetof(struct sockaddr_in6, sin6_addr);
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331 len = 16;
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332 sin6 = (struct sockaddr_in6 *) sa;
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333 port = sin6->sin6_port;
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334 break;
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335 #endif
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336
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337 default: /* AF_INET */
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338 off = offsetof(struct sockaddr_in, sin_addr);
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339 len = 4;
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340 sin = (struct sockaddr_in *) sa;
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341 port = sin->sin_port;
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342 break;
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343 }
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344
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345 if (ngx_memcmp(ls[i].sockaddr + off, u.sockaddr + off, len) != 0) {
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346 continue;
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347 }
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348
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349 if (port != u.port) {
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290
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350 continue;
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351 }
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352
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353 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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354 "duplicate \"%V\" address and port pair", &u.url);
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355 return NGX_CONF_ERROR;
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356 }
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357
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486
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358 ls = ngx_array_push(&cmcf->listen);
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359 if (ls == NULL) {
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290
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360 return NGX_CONF_ERROR;
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361 }
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362
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486
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363 ngx_memzero(ls, sizeof(ngx_mail_listen_t));
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290
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364
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492
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365 ngx_memcpy(ls->sockaddr, u.sockaddr, u.socklen);
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366
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367 ls->socklen = u.socklen;
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368 ls->wildcard = u.wildcard;
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486
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369 ls->ctx = cf->ctx;
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290
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370
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336
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371 for (m = 0; ngx_modules[m]; m++) {
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372 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
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373 continue;
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374 }
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375
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376 module = ngx_modules[m]->ctx;
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377
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378 if (module->protocol == NULL) {
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379 continue;
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380 }
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381
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382 for (i = 0; module->protocol->port[i]; i++) {
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383 if (module->protocol->port[i] == u.port) {
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384 cscf->protocol = module->protocol;
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385 break;
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386 }
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387 }
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388 }
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389
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404
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390 for (i = 2; i < cf->args->nelts; i++) {
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391
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392 if (ngx_strcmp(value[i].data, "bind") == 0) {
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486
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393 ls->bind = 1;
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404
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394 continue;
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395 }
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396
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492
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397 if (ngx_strncmp(value[i].data, "ipv6only=o", 10) == 0) {
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398 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
|
|
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399 struct sockaddr *sa;
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400 u_char buf[NGX_SOCKADDR_STRLEN];
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|
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401
|
|
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402 sa = (struct sockaddr *) ls->sockaddr;
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403
|
|
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404 if (sa->sa_family == AF_INET6) {
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405
|
|
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406 if (ngx_strcmp(&value[i].data[10], "n") == 0) {
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|
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407 ls->ipv6only = 1;
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|
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408
|
|
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409 } else if (ngx_strcmp(&value[i].data[10], "ff") == 0) {
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|
|
410 ls->ipv6only = 2;
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|
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411
|
|
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412 } else {
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|
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413 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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|
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414 "invalid ipv6only flags \"%s\"",
|
|
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415 &value[i].data[9]);
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|
|
416 return NGX_CONF_ERROR;
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|
|
417 }
|
|
|
418
|
|
|
419 ls->bind = 1;
|
|
|
420
|
|
|
421 } else {
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|
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422 len = ngx_sock_ntop(sa, buf, NGX_SOCKADDR_STRLEN, 1);
|
|
|
423
|
|
|
424 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
425 "ipv6only is not supported "
|
|
|
426 "on addr \"%*s\", ignored", len, buf);
|
|
|
427 }
|
|
|
428
|
|
|
429 continue;
|
|
|
430 #else
|
|
|
431 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
432 "bind ipv6only is not supported "
|
|
|
433 "on this platform");
|
|
|
434 return NGX_CONF_ERROR;
|
|
|
435 #endif
|
|
|
436 }
|
|
|
437
|
|
404
|
438 if (ngx_strcmp(value[i].data, "ssl") == 0) {
|
|
|
439 #if (NGX_MAIL_SSL)
|
|
486
|
440 ls->ssl = 1;
|
|
404
|
441 continue;
|
|
|
442 #else
|
|
|
443 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
444 "the \"ssl\" parameter requires "
|
|
|
445 "ngx_mail_ssl_module");
|
|
|
446 return NGX_CONF_ERROR;
|
|
|
447 #endif
|
|
|
448 }
|
|
|
449
|
|
|
450 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
451 "the invalid \"%V\" parameter", &value[i]);
|
|
|
452 return NGX_CONF_ERROR;
|
|
290
|
453 }
|
|
|
454
|
|
404
|
455 return NGX_CONF_OK;
|
|
290
|
456 }
|
|
|
457
|
|
|
458
|
|
|
459 static char *
|
|
336
|
460 ngx_mail_core_protocol(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
461 {
|
|
|
462 ngx_mail_core_srv_conf_t *cscf = conf;
|
|
|
463
|
|
|
464 ngx_str_t *value;
|
|
|
465 ngx_uint_t m;
|
|
|
466 ngx_mail_module_t *module;
|
|
|
467
|
|
|
468 value = cf->args->elts;
|
|
|
469
|
|
|
470 for (m = 0; ngx_modules[m]; m++) {
|
|
|
471 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
|
|
|
472 continue;
|
|
|
473 }
|
|
|
474
|
|
|
475 module = ngx_modules[m]->ctx;
|
|
|
476
|
|
|
477 if (module->protocol
|
|
|
478 && ngx_strcmp(module->protocol->name.data, value[1].data) == 0)
|
|
|
479 {
|
|
|
480 cscf->protocol = module->protocol;
|
|
|
481
|
|
|
482 return NGX_CONF_OK;
|
|
|
483 }
|
|
|
484 }
|
|
|
485
|
|
|
486 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
487 "unknown protocol \"%V\"", &value[1]);
|
|
|
488 return NGX_CONF_ERROR;
|
|
|
489 }
|
|
|
490
|
|
|
491
|
|
366
|
492 static char *
|
|
|
493 ngx_mail_core_resolver(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
494 {
|
|
|
495 ngx_mail_core_srv_conf_t *cscf = conf;
|
|
|
496
|
|
|
497 ngx_url_t u;
|
|
|
498 ngx_str_t *value;
|
|
|
499
|
|
|
500 value = cf->args->elts;
|
|
|
501
|
|
|
502 if (cscf->resolver != NGX_CONF_UNSET_PTR) {
|
|
|
503 return "is duplicate";
|
|
|
504 }
|
|
|
505
|
|
|
506 if (ngx_strcmp(value[1].data, "off") == 0) {
|
|
|
507 cscf->resolver = NULL;
|
|
|
508 return NGX_CONF_OK;
|
|
|
509 }
|
|
|
510
|
|
|
511 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
512
|
|
|
513 u.host = value[1];
|
|
|
514 u.port = 53;
|
|
|
515
|
|
|
516 if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) {
|
|
|
517 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%V: %s", &u.host, u.err);
|
|
|
518 return NGX_CONF_ERROR;
|
|
|
519 }
|
|
|
520
|
|
|
521 cscf->resolver = ngx_resolver_create(cf, &u.addrs[0]);
|
|
|
522 if (cscf->resolver == NULL) {
|
|
|
523 return NGX_CONF_OK;
|
|
|
524 }
|
|
|
525
|
|
|
526 return NGX_CONF_OK;
|
|
|
527 }
|
|
|
528
|
|
|
529
|
|
336
|
530 char *
|
|
|
531 ngx_mail_capabilities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
290
|
532 {
|
|
|
533 char *p = conf;
|
|
|
534
|
|
|
535 ngx_str_t *c, *value;
|
|
|
536 ngx_uint_t i;
|
|
|
537 ngx_array_t *a;
|
|
|
538
|
|
|
539 a = (ngx_array_t *) (p + cmd->offset);
|
|
|
540
|
|
|
541 value = cf->args->elts;
|
|
|
542
|
|
|
543 for (i = 1; i < cf->args->nelts; i++) {
|
|
|
544 c = ngx_array_push(a);
|
|
|
545 if (c == NULL) {
|
|
|
546 return NGX_CONF_ERROR;
|
|
|
547 }
|
|
|
548
|
|
|
549 *c = value[i];
|
|
|
550 }
|
|
|
551
|
|
|
552 return NGX_CONF_OK;
|
|
|
553 }
|
