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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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654
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27 static ngx_conf_deprecated_t ngx_conf_deprecated_so_keepalive = {
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28 ngx_conf_deprecated, "so_keepalive",
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29 "so_keepalive\" parameter of the \"listen"
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30 };
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31
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32
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290
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33 static ngx_command_t ngx_mail_core_commands[] = {
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34
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35 { ngx_string("server"),
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36 NGX_MAIL_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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37 ngx_mail_core_server,
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38 0,
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39 0,
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40 NULL },
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41
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42 { ngx_string("listen"),
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43 NGX_MAIL_SRV_CONF|NGX_CONF_TAKE12,
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44 ngx_mail_core_listen,
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336
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45 NGX_MAIL_SRV_CONF_OFFSET,
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290
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46 0,
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47 NULL },
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48
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49 { ngx_string("protocol"),
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50 NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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336
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51 ngx_mail_core_protocol,
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290
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52 NGX_MAIL_SRV_CONF_OFFSET,
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336
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53 0,
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290
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54 NULL },
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55
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56 { ngx_string("so_keepalive"),
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57 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_FLAG,
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58 ngx_conf_set_flag_slot,
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59 NGX_MAIL_SRV_CONF_OFFSET,
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60 offsetof(ngx_mail_core_srv_conf_t, so_keepalive),
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654
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61 &ngx_conf_deprecated_so_keepalive },
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290
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62
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63 { ngx_string("timeout"),
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64 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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65 ngx_conf_set_msec_slot,
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66 NGX_MAIL_SRV_CONF_OFFSET,
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67 offsetof(ngx_mail_core_srv_conf_t, timeout),
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68 NULL },
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69
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70 { ngx_string("server_name"),
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71 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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72 ngx_conf_set_str_slot,
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73 NGX_MAIL_SRV_CONF_OFFSET,
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74 offsetof(ngx_mail_core_srv_conf_t, server_name),
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75 NULL },
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76
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366
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77 { ngx_string("resolver"),
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646
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78 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE,
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366
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79 ngx_mail_core_resolver,
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80 NGX_MAIL_SRV_CONF_OFFSET,
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81 0,
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82 NULL },
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83
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84 { ngx_string("resolver_timeout"),
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85 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
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86 ngx_conf_set_msec_slot,
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87 NGX_MAIL_SRV_CONF_OFFSET,
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88 offsetof(ngx_mail_core_srv_conf_t, resolver_timeout),
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89 NULL },
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90
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290
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91 ngx_null_command
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92 };
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93
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94
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95 static ngx_mail_module_t ngx_mail_core_module_ctx = {
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336
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96 NULL, /* protocol */
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97
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290
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98 ngx_mail_core_create_main_conf, /* create main configuration */
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99 NULL, /* init main configuration */
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100
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101 ngx_mail_core_create_srv_conf, /* create server configuration */
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102 ngx_mail_core_merge_srv_conf /* merge server configuration */
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103 };
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104
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105
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106 ngx_module_t ngx_mail_core_module = {
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107 NGX_MODULE_V1,
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108 &ngx_mail_core_module_ctx, /* module context */
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109 ngx_mail_core_commands, /* module directives */
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110 NGX_MAIL_MODULE, /* module type */
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111 NULL, /* init master */
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112 NULL, /* init module */
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113 NULL, /* init process */
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114 NULL, /* init thread */
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115 NULL, /* exit thread */
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116 NULL, /* exit process */
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117 NULL, /* exit master */
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118 NGX_MODULE_V1_PADDING
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119 };
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120
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121
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122 static void *
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123 ngx_mail_core_create_main_conf(ngx_conf_t *cf)
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124 {
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125 ngx_mail_core_main_conf_t *cmcf;
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126
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127 cmcf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_core_main_conf_t));
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128 if (cmcf == NULL) {
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496
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129 return NULL;
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290
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130 }
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131
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132 if (ngx_array_init(&cmcf->servers, cf->pool, 4,
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133 sizeof(ngx_mail_core_srv_conf_t *))
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134 != NGX_OK)
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135 {
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496
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136 return NULL;
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290
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137 }
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138
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139 if (ngx_array_init(&cmcf->listen, cf->pool, 4, sizeof(ngx_mail_listen_t))
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140 != NGX_OK)
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141 {
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496
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142 return NULL;
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290
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143 }
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144
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145 return cmcf;
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146 }
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147
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148
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149 static void *
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150 ngx_mail_core_create_srv_conf(ngx_conf_t *cf)
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151 {
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152 ngx_mail_core_srv_conf_t *cscf;
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153
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154 cscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_core_srv_conf_t));
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155 if (cscf == NULL) {
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156 return NULL;
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157 }
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158
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336
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159 /*
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160 * set by ngx_pcalloc():
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161 *
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162 * cscf->protocol = NULL;
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163 */
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164
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290
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165 cscf->timeout = NGX_CONF_UNSET_MSEC;
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366
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166 cscf->resolver_timeout = NGX_CONF_UNSET_MSEC;
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290
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167 cscf->so_keepalive = NGX_CONF_UNSET;
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168
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366
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169 cscf->resolver = NGX_CONF_UNSET_PTR;
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170
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171 cscf->file_name = cf->conf_file->file.name.data;
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172 cscf->line = cf->conf_file->line;
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173
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290
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174 return cscf;
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175 }
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176
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177
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178 static char *
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179 ngx_mail_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
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180 {
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181 ngx_mail_core_srv_conf_t *prev = parent;
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182 ngx_mail_core_srv_conf_t *conf = child;
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183
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184 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000);
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366
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185 ngx_conf_merge_msec_value(conf->resolver_timeout, prev->resolver_timeout,
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186 30000);
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290
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187
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336
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188 ngx_conf_merge_value(conf->so_keepalive, prev->so_keepalive, 0);
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290
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189
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190
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191 ngx_conf_merge_str_value(conf->server_name, prev->server_name, "");
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192
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193 if (conf->server_name.len == 0) {
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376
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194 conf->server_name = cf->cycle->hostname;
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290
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195 }
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196
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336
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197 if (conf->protocol == NULL) {
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198 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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199 "unknown mail protocol for server in %s:%ui",
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200 conf->file_name, conf->line);
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290
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201 return NGX_CONF_ERROR;
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202 }
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203
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366
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204 ngx_conf_merge_ptr_value(conf->resolver, prev->resolver, NULL);
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205
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290
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206 return NGX_CONF_OK;
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207 }
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208
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209
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210 static char *
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211 ngx_mail_core_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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212 {
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213 char *rv;
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214 void *mconf;
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215 ngx_uint_t m;
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216 ngx_conf_t pcf;
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217 ngx_mail_module_t *module;
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218 ngx_mail_conf_ctx_t *ctx, *mail_ctx;
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219 ngx_mail_core_srv_conf_t *cscf, **cscfp;
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220 ngx_mail_core_main_conf_t *cmcf;
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221
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222 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_mail_conf_ctx_t));
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223 if (ctx == NULL) {
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224 return NGX_CONF_ERROR;
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225 }
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226
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227 mail_ctx = cf->ctx;
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228 ctx->main_conf = mail_ctx->main_conf;
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229
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230 /* the server{}'s srv_conf */
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231
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232 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_mail_max_module);
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233 if (ctx->srv_conf == NULL) {
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234 return NGX_CONF_ERROR;
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235 }
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236
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237 for (m = 0; ngx_modules[m]; m++) {
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238 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
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239 continue;
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240 }
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241
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242 module = ngx_modules[m]->ctx;
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243
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244 if (module->create_srv_conf) {
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245 mconf = module->create_srv_conf(cf);
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246 if (mconf == NULL) {
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247 return NGX_CONF_ERROR;
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248 }
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249
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250 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
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251 }
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252 }
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253
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254 /* the server configuration context */
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255
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256 cscf = ctx->srv_conf[ngx_mail_core_module.ctx_index];
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257 cscf->ctx = ctx;
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258
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259 cmcf = ctx->main_conf[ngx_mail_core_module.ctx_index];
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260
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261 cscfp = ngx_array_push(&cmcf->servers);
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262 if (cscfp == NULL) {
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263 return NGX_CONF_ERROR;
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264 }
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265
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266 *cscfp = cscf;
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267
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268
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269 /* parse inside server{} */
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270
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271 pcf = *cf;
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272 cf->ctx = ctx;
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273 cf->cmd_type = NGX_MAIL_SRV_CONF;
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274
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275 rv = ngx_conf_parse(cf, NULL);
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276
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277 *cf = pcf;
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278
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279 return rv;
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280 }
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281
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282
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283 static char *
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284 ngx_mail_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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285 {
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336
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286 ngx_mail_core_srv_conf_t *cscf = conf;
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287
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492
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288 size_t len, off;
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289 in_port_t port;
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290
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290 ngx_str_t *value;
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291 ngx_url_t u;
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336
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292 ngx_uint_t i, m;
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492
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293 struct sockaddr *sa;
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486
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294 ngx_mail_listen_t *ls;
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336
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295 ngx_mail_module_t *module;
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492
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296 struct sockaddr_in *sin;
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290
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297 ngx_mail_core_main_conf_t *cmcf;
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492
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298 #if (NGX_HAVE_INET6)
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299 struct sockaddr_in6 *sin6;
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300 #endif
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290
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301
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302 value = cf->args->elts;
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303
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304 ngx_memzero(&u, sizeof(ngx_url_t));
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305
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306 u.url = value[1];
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307 u.listen = 1;
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308
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340
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309 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
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290
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310 if (u.err) {
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311 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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312 "%s in \"%V\" of the \"listen\" directive",
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313 u.err, &u.url);
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314 }
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315
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316 return NGX_CONF_ERROR;
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317 }
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318
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319 cmcf = ngx_mail_conf_get_module_main_conf(cf, ngx_mail_core_module);
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320
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486
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321 ls = cmcf->listen.elts;
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290
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322
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323 for (i = 0; i < cmcf->listen.nelts; i++) {
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324
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492
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325 sa = (struct sockaddr *) ls[i].sockaddr;
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326
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327 if (sa->sa_family != u.family) {
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328 continue;
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329 }
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330
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331 switch (sa->sa_family) {
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332
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333 #if (NGX_HAVE_INET6)
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334 case AF_INET6:
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335 off = offsetof(struct sockaddr_in6, sin6_addr);
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336 len = 16;
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337 sin6 = (struct sockaddr_in6 *) sa;
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338 port = sin6->sin6_port;
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339 break;
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340 #endif
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341
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342 default: /* AF_INET */
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343 off = offsetof(struct sockaddr_in, sin_addr);
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344 len = 4;
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345 sin = (struct sockaddr_in *) sa;
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346 port = sin->sin_port;
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347 break;
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348 }
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349
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350 if (ngx_memcmp(ls[i].sockaddr + off, u.sockaddr + off, len) != 0) {
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351 continue;
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352 }
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353
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354 if (port != u.port) {
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290
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355 continue;
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356 }
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357
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358 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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359 "duplicate \"%V\" address and port pair", &u.url);
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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 ls = ngx_array_push(&cmcf->listen);
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364 if (ls == NULL) {
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290
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365 return NGX_CONF_ERROR;
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366 }
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367
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486
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368 ngx_memzero(ls, sizeof(ngx_mail_listen_t));
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290
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369
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492
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370 ngx_memcpy(ls->sockaddr, u.sockaddr, u.socklen);
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371
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372 ls->socklen = u.socklen;
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373 ls->wildcard = u.wildcard;
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486
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374 ls->ctx = cf->ctx;
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290
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375
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336
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376 for (m = 0; ngx_modules[m]; m++) {
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377 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
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378 continue;
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379 }
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380
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381 module = ngx_modules[m]->ctx;
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382
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383 if (module->protocol == NULL) {
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384 continue;
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385 }
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386
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387 for (i = 0; module->protocol->port[i]; i++) {
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388 if (module->protocol->port[i] == u.port) {
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389 cscf->protocol = module->protocol;
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390 break;
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391 }
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392 }
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393 }
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394
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404
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395 for (i = 2; i < cf->args->nelts; i++) {
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396
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397 if (ngx_strcmp(value[i].data, "bind") == 0) {
|
|
486
|
398 ls->bind = 1;
|
|
404
|
399 continue;
|
|
|
400 }
|
|
|
401
|
|
492
|
402 if (ngx_strncmp(value[i].data, "ipv6only=o", 10) == 0) {
|
|
|
403 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
|
|
|
404 struct sockaddr *sa;
|
|
|
405 u_char buf[NGX_SOCKADDR_STRLEN];
|
|
|
406
|
|
|
407 sa = (struct sockaddr *) ls->sockaddr;
|
|
|
408
|
|
|
409 if (sa->sa_family == AF_INET6) {
|
|
|
410
|
|
|
411 if (ngx_strcmp(&value[i].data[10], "n") == 0) {
|
|
|
412 ls->ipv6only = 1;
|
|
|
413
|
|
|
414 } else if (ngx_strcmp(&value[i].data[10], "ff") == 0) {
|
|
|
415 ls->ipv6only = 2;
|
|
|
416
|
|
|
417 } else {
|
|
|
418 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
419 "invalid ipv6only flags \"%s\"",
|
|
|
420 &value[i].data[9]);
|
|
|
421 return NGX_CONF_ERROR;
|
|
|
422 }
|
|
|
423
|
|
|
424 ls->bind = 1;
|
|
|
425
|
|
|
426 } else {
|
|
|
427 len = ngx_sock_ntop(sa, buf, NGX_SOCKADDR_STRLEN, 1);
|
|
|
428
|
|
|
429 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
430 "ipv6only is not supported "
|
|
|
431 "on addr \"%*s\", ignored", len, buf);
|
|
|
432 }
|
|
|
433
|
|
|
434 continue;
|
|
|
435 #else
|
|
|
436 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
437 "bind ipv6only is not supported "
|
|
|
438 "on this platform");
|
|
|
439 return NGX_CONF_ERROR;
|
|
|
440 #endif
|
|
|
441 }
|
|
|
442
|
|
404
|
443 if (ngx_strcmp(value[i].data, "ssl") == 0) {
|
|
|
444 #if (NGX_MAIL_SSL)
|
|
486
|
445 ls->ssl = 1;
|
|
404
|
446 continue;
|
|
|
447 #else
|
|
|
448 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
449 "the \"ssl\" parameter requires "
|
|
|
450 "ngx_mail_ssl_module");
|
|
|
451 return NGX_CONF_ERROR;
|
|
|
452 #endif
|
|
|
453 }
|
|
|
454
|
|
654
|
455 if (ngx_strncmp(value[i].data, "so_keepalive=", 13) == 0) {
|
|
|
456
|
|
|
457 if (ngx_strcmp(&value[i].data[13], "on") == 0) {
|
|
|
458 ls->so_keepalive = 1;
|
|
|
459
|
|
|
460 } else if (ngx_strcmp(&value[i].data[13], "off") == 0) {
|
|
|
461 ls->so_keepalive = 2;
|
|
|
462
|
|
|
463 } else {
|
|
|
464
|
|
|
465 #if (NGX_HAVE_KEEPALIVE_TUNABLE)
|
|
|
466 u_char *p, *end;
|
|
|
467 ngx_str_t s;
|
|
|
468
|
|
|
469 end = value[i].data + value[i].len;
|
|
|
470 s.data = value[i].data + 13;
|
|
|
471
|
|
|
472 p = ngx_strlchr(s.data, end, ':');
|
|
|
473 if (p == NULL) {
|
|
|
474 p = end;
|
|
|
475 }
|
|
|
476
|
|
|
477 if (p > s.data) {
|
|
|
478 s.len = p - s.data;
|
|
|
479
|
|
|
480 ls->tcp_keepidle = ngx_parse_time(&s, 1);
|
|
|
481 if (ls->tcp_keepidle == NGX_ERROR) {
|
|
|
482 goto invalid_so_keepalive;
|
|
|
483 }
|
|
|
484 }
|
|
|
485
|
|
|
486 s.data = (p < end) ? (p + 1) : end;
|
|
|
487
|
|
|
488 p = ngx_strlchr(s.data, end, ':');
|
|
|
489 if (p == NULL) {
|
|
|
490 p = end;
|
|
|
491 }
|
|
|
492
|
|
|
493 if (p > s.data) {
|
|
|
494 s.len = p - s.data;
|
|
|
495
|
|
|
496 ls->tcp_keepintvl = ngx_parse_time(&s, 1);
|
|
|
497 if (ls->tcp_keepintvl == NGX_ERROR) {
|
|
|
498 goto invalid_so_keepalive;
|
|
|
499 }
|
|
|
500 }
|
|
|
501
|
|
|
502 s.data = (p < end) ? (p + 1) : end;
|
|
|
503
|
|
|
504 if (s.data < end) {
|
|
|
505 s.len = end - s.data;
|
|
|
506
|
|
|
507 ls->tcp_keepcnt = ngx_atoi(s.data, s.len);
|
|
|
508 if (ls->tcp_keepcnt == NGX_ERROR) {
|
|
|
509 goto invalid_so_keepalive;
|
|
|
510 }
|
|
|
511 }
|
|
|
512
|
|
|
513 if (ls->tcp_keepidle == 0 && ls->tcp_keepintvl == 0
|
|
|
514 && ls->tcp_keepcnt == 0)
|
|
|
515 {
|
|
|
516 goto invalid_so_keepalive;
|
|
|
517 }
|
|
|
518
|
|
|
519 ls->so_keepalive = 1;
|
|
|
520
|
|
|
521 #else
|
|
|
522
|
|
|
523 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
524 "the \"so_keepalive\" parameter accepts "
|
|
|
525 "only \"on\" or \"off\" on this platform");
|
|
|
526 return NGX_CONF_ERROR;
|
|
|
527
|
|
|
528 #endif
|
|
|
529 }
|
|
|
530
|
|
|
531 ls->bind = 1;
|
|
|
532
|
|
|
533 continue;
|
|
|
534
|
|
|
535 #if (NGX_HAVE_KEEPALIVE_TUNABLE)
|
|
|
536 invalid_so_keepalive:
|
|
|
537
|
|
|
538 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
539 "invalid so_keepalive value: \"%s\"",
|
|
|
540 &value[i].data[13]);
|
|
|
541 return NGX_CONF_ERROR;
|
|
|
542 #endif
|
|
|
543 }
|
|
|
544
|
|
404
|
545 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
546 "the invalid \"%V\" parameter", &value[i]);
|
|
|
547 return NGX_CONF_ERROR;
|
|
290
|
548 }
|
|
|
549
|
|
404
|
550 return NGX_CONF_OK;
|
|
290
|
551 }
|
|
|
552
|
|
|
553
|
|
|
554 static char *
|
|
336
|
555 ngx_mail_core_protocol(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
556 {
|
|
|
557 ngx_mail_core_srv_conf_t *cscf = conf;
|
|
|
558
|
|
|
559 ngx_str_t *value;
|
|
|
560 ngx_uint_t m;
|
|
|
561 ngx_mail_module_t *module;
|
|
|
562
|
|
|
563 value = cf->args->elts;
|
|
|
564
|
|
|
565 for (m = 0; ngx_modules[m]; m++) {
|
|
|
566 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
|
|
|
567 continue;
|
|
|
568 }
|
|
|
569
|
|
|
570 module = ngx_modules[m]->ctx;
|
|
|
571
|
|
|
572 if (module->protocol
|
|
|
573 && ngx_strcmp(module->protocol->name.data, value[1].data) == 0)
|
|
|
574 {
|
|
|
575 cscf->protocol = module->protocol;
|
|
|
576
|
|
|
577 return NGX_CONF_OK;
|
|
|
578 }
|
|
|
579 }
|
|
|
580
|
|
|
581 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
582 "unknown protocol \"%V\"", &value[1]);
|
|
|
583 return NGX_CONF_ERROR;
|
|
|
584 }
|
|
|
585
|
|
|
586
|
|
366
|
587 static char *
|
|
|
588 ngx_mail_core_resolver(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
589 {
|
|
|
590 ngx_mail_core_srv_conf_t *cscf = conf;
|
|
|
591
|
|
|
592 ngx_str_t *value;
|
|
|
593
|
|
|
594 value = cf->args->elts;
|
|
|
595
|
|
|
596 if (cscf->resolver != NGX_CONF_UNSET_PTR) {
|
|
|
597 return "is duplicate";
|
|
|
598 }
|
|
|
599
|
|
|
600 if (ngx_strcmp(value[1].data, "off") == 0) {
|
|
|
601 cscf->resolver = NULL;
|
|
|
602 return NGX_CONF_OK;
|
|
|
603 }
|
|
|
604
|
|
646
|
605 cscf->resolver = ngx_resolver_create(cf, &value[1], cf->args->nelts - 1);
|
|
|
606 if (cscf->resolver == NULL) {
|
|
366
|
607 return NGX_CONF_ERROR;
|
|
|
608 }
|
|
|
609
|
|
|
610 return NGX_CONF_OK;
|
|
|
611 }
|
|
|
612
|
|
|
613
|
|
336
|
614 char *
|
|
|
615 ngx_mail_capabilities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
290
|
616 {
|
|
|
617 char *p = conf;
|
|
|
618
|
|
|
619 ngx_str_t *c, *value;
|
|
|
620 ngx_uint_t i;
|
|
|
621 ngx_array_t *a;
|
|
|
622
|
|
|
623 a = (ngx_array_t *) (p + cmd->offset);
|
|
|
624
|
|
|
625 value = cf->args->elts;
|
|
|
626
|
|
|
627 for (i = 1; i < cf->args->nelts; i++) {
|
|
|
628 c = ngx_array_push(a);
|
|
|
629 if (c == NULL) {
|
|
|
630 return NGX_CONF_ERROR;
|
|
|
631 }
|
|
|
632
|
|
|
633 *c = value[i];
|
|
|
634 }
|
|
|
635
|
|
|
636 return NGX_CONF_OK;
|
|
|
637 }
|
