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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 char *ngx_mail_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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372
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14 static ngx_int_t ngx_mail_cmp_conf_in_addrs(const void *one, const void *two);
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290
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15
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16
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17 ngx_uint_t ngx_mail_max_module;
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18
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19
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20 static ngx_command_t ngx_mail_commands[] = {
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21
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22 { ngx_string("mail"),
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23 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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24 ngx_mail_block,
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25 0,
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26 0,
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27 NULL },
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28
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29 { ngx_string("imap"),
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30 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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31 ngx_mail_block,
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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_null_command
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37 };
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38
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39
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40 static ngx_core_module_t ngx_mail_module_ctx = {
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41 ngx_string("mail"),
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42 NULL,
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43 NULL
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44 };
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45
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46
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47 ngx_module_t ngx_mail_module = {
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48 NGX_MODULE_V1,
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49 &ngx_mail_module_ctx, /* module context */
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50 ngx_mail_commands, /* module directives */
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51 NGX_CORE_MODULE, /* module type */
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52 NULL, /* init master */
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53 NULL, /* init module */
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54 NULL, /* init process */
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55 NULL, /* init thread */
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56 NULL, /* exit thread */
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57 NULL, /* exit process */
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58 NULL, /* exit master */
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59 NGX_MODULE_V1_PADDING
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60 };
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61
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62
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63 static char *
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64 ngx_mail_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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65 {
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66 char *rv;
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67 u_char *text;
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68 size_t len;
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69 ngx_uint_t i, a, l, m, mi, s, p, last, bind_all, done;
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70 ngx_conf_t pcf;
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71 ngx_array_t in_ports;
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72 ngx_listening_t *ls;
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486
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73 ngx_mail_listen_t *mls;
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290
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74 ngx_mail_module_t *module;
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486
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75 struct sockaddr_in sin;
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76 ngx_mail_in_port_t *mip;
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290
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77 ngx_mail_conf_ctx_t *ctx;
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78 ngx_mail_conf_in_port_t *in_port;
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79 ngx_mail_conf_in_addr_t *in_addr;
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80 ngx_mail_core_srv_conf_t **cscfp;
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81 ngx_mail_core_main_conf_t *cmcf;
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82
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83 if (cmd->name.data[0] == 'i') {
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84 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
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85 "the \"imap\" directive is deprecated, "
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86 "use the \"mail\" directive instead");
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87 }
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88
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89 /* the main mail context */
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90
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91 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_mail_conf_ctx_t));
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92 if (ctx == NULL) {
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93 return NGX_CONF_ERROR;
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94 }
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95
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96 *(ngx_mail_conf_ctx_t **) conf = ctx;
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97
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98 /* count the number of the http modules and set up their indices */
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99
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100 ngx_mail_max_module = 0;
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101 for (m = 0; ngx_modules[m]; m++) {
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102 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
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103 continue;
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104 }
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105
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106 ngx_modules[m]->ctx_index = ngx_mail_max_module++;
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107 }
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108
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109
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110 /* the mail main_conf context, it is the same in the all mail contexts */
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111
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112 ctx->main_conf = ngx_pcalloc(cf->pool,
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113 sizeof(void *) * ngx_mail_max_module);
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114 if (ctx->main_conf == NULL) {
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115 return NGX_CONF_ERROR;
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116 }
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117
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118
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119 /*
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120 * the mail null srv_conf context, it is used to merge
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121 * the server{}s' srv_conf's
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122 */
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123
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124 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_mail_max_module);
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125 if (ctx->srv_conf == NULL) {
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126 return NGX_CONF_ERROR;
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127 }
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128
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129
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130 /*
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131 * create the main_conf's, the null srv_conf's, and the null loc_conf's
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132 * of the all mail modules
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133 */
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134
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135 for (m = 0; ngx_modules[m]; m++) {
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136 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
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137 continue;
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138 }
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139
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140 module = ngx_modules[m]->ctx;
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141 mi = ngx_modules[m]->ctx_index;
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142
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143 if (module->create_main_conf) {
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144 ctx->main_conf[mi] = module->create_main_conf(cf);
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145 if (ctx->main_conf[mi] == NULL) {
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146 return NGX_CONF_ERROR;
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147 }
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148 }
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149
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150 if (module->create_srv_conf) {
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151 ctx->srv_conf[mi] = module->create_srv_conf(cf);
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152 if (ctx->srv_conf[mi] == NULL) {
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153 return NGX_CONF_ERROR;
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154 }
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155 }
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156 }
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157
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158
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159 /* parse inside the mail{} block */
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160
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161 pcf = *cf;
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162 cf->ctx = ctx;
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163
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164 cf->module_type = NGX_MAIL_MODULE;
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165 cf->cmd_type = NGX_MAIL_MAIN_CONF;
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166 rv = ngx_conf_parse(cf, NULL);
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167
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168 if (rv != NGX_CONF_OK) {
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169 *cf = pcf;
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170 return rv;
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171 }
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172
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173
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174 /* init mail{} main_conf's, merge the server{}s' srv_conf's */
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175
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176 cmcf = ctx->main_conf[ngx_mail_core_module.ctx_index];
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177 cscfp = cmcf->servers.elts;
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178
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179 for (m = 0; ngx_modules[m]; m++) {
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180 if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
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181 continue;
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182 }
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183
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184 module = ngx_modules[m]->ctx;
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185 mi = ngx_modules[m]->ctx_index;
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186
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187 /* init mail{} main_conf's */
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188
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336
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189 cf->ctx = ctx;
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190
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290
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191 if (module->init_main_conf) {
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192 rv = module->init_main_conf(cf, ctx->main_conf[mi]);
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193 if (rv != NGX_CONF_OK) {
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194 *cf = pcf;
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195 return rv;
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196 }
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197 }
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198
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199 for (s = 0; s < cmcf->servers.nelts; s++) {
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200
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201 /* merge the server{}s' srv_conf's */
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202
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336
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203 cf->ctx = cscfp[s]->ctx;
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204
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290
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205 if (module->merge_srv_conf) {
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206 rv = module->merge_srv_conf(cf,
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207 ctx->srv_conf[mi],
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208 cscfp[s]->ctx->srv_conf[mi]);
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209 if (rv != NGX_CONF_OK) {
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210 *cf = pcf;
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211 return rv;
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212 }
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213 }
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214 }
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215 }
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216
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217 *cf = pcf;
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218
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219
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220 if (ngx_array_init(&in_ports, cf->temp_pool, 4,
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221 sizeof(ngx_mail_conf_in_port_t))
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222 != NGX_OK)
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223 {
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224 return NGX_CONF_ERROR;
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225 }
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226
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486
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227 mls = cmcf->listen.elts;
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290
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228
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229 for (l = 0; l < cmcf->listen.nelts; l++) {
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230
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231 /* AF_INET only */
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232
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233 in_port = in_ports.elts;
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234 for (p = 0; p < in_ports.nelts; p++) {
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486
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235 if (in_port[p].port == mls[l].port) {
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290
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236 in_port = &in_port[p];
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237 goto found;
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238 }
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239 }
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240
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241 in_port = ngx_array_push(&in_ports);
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242 if (in_port == NULL) {
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243 return NGX_CONF_ERROR;
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244 }
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245
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486
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246 in_port->port = mls[l].port;
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290
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247
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248 if (ngx_array_init(&in_port->addrs, cf->temp_pool, 2,
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249 sizeof(ngx_mail_conf_in_addr_t))
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250 != NGX_OK)
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251 {
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252 return NGX_CONF_ERROR;
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253 }
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254
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255 found:
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256
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257 in_addr = ngx_array_push(&in_port->addrs);
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258 if (in_addr == NULL) {
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259 return NGX_CONF_ERROR;
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260 }
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261
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486
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262 in_addr->addr = mls[l].addr;
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263 in_addr->ctx = mls[l].ctx;
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264 in_addr->bind = mls[l].bind;
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404
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265 #if (NGX_MAIL_SSL)
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486
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266 in_addr->ssl = mls[l].ssl;
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404
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267 #endif
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290
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268 }
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269
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270 /* optimize the lists of ports and addresses */
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271
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272 /* AF_INET only */
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273
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274 in_port = in_ports.elts;
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275 for (p = 0; p < in_ports.nelts; p++) {
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276
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302
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277 ngx_sort(in_port[p].addrs.elts, (size_t) in_port[p].addrs.nelts,
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278 sizeof(ngx_mail_conf_in_addr_t), ngx_mail_cmp_conf_in_addrs);
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290
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279
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280 in_addr = in_port[p].addrs.elts;
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281 last = in_port[p].addrs.nelts;
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282
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283 /*
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284 * if there is the binding to the "*:port" then we need to bind()
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285 * to the "*:port" only and ignore the other bindings
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286 */
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287
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288 if (in_addr[last - 1].addr == INADDR_ANY) {
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289 in_addr[last - 1].bind = 1;
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290 bind_all = 0;
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291
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292 } else {
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293 bind_all = 1;
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294 }
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295
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296 for (a = 0; a < last; /* void */ ) {
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297
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298 if (!bind_all && !in_addr[a].bind) {
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299 a++;
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300 continue;
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301 }
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302
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486
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303 ngx_memzero(&sin, sizeof(struct sockaddr_in));
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304
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305 sin.sin_family = AF_INET;
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306 sin.sin_addr.s_addr = in_addr[a].addr;
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307 sin.sin_port = htons(in_port[p].port);
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308
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309 ls = ngx_create_listening(cf, &sin, sizeof(struct sockaddr_in));
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290
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310 if (ls == NULL) {
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486
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311 return NULL;
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290
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312 }
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313
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314 ls->addr_ntop = 1;
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315 ls->handler = ngx_mail_init_connection;
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316 ls->pool_size = 256;
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317
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484
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318 /* TODO: error_log directive */
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319 ls->logp = &cf->cycle->new_log;
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290
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320 ls->log.data = &ls->addr_text;
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321 ls->log.handler = ngx_accept_log_error;
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322
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486
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323 mip = ngx_palloc(cf->pool, sizeof(ngx_mail_in_port_t));
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324 if (mip == NULL) {
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290
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325 return NGX_CONF_ERROR;
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326 }
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327
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486
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328 ls->servers = mip;
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290
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329
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330 in_addr = in_port[p].addrs.elts;
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331
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332 if (in_addr[a].bind && in_addr[a].addr != INADDR_ANY) {
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486
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333 mip->naddrs = 1;
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290
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334 done = 0;
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335
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336 } else if (in_port[p].addrs.nelts > 1
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337 && in_addr[last - 1].addr == INADDR_ANY)
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338 {
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486
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339 mip->naddrs = last;
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290
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340 done = 1;
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341
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342 } else {
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486
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343 mip->naddrs = 1;
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290
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344 done = 0;
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345 }
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346
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347 #if 0
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348 ngx_log_error(NGX_LOG_ALERT, cf->log, 0,
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349 "%ui: %V %d %ui %ui",
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350 a, &ls->addr_text, in_addr[a].bind,
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486
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351 mip->naddrs, last);
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290
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352 #endif
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353
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486
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354 mip->addrs = ngx_pcalloc(cf->pool,
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355 mip->naddrs * sizeof(ngx_mail_in_addr_t));
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356 if (mip->addrs == NULL) {
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290
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357 return NGX_CONF_ERROR;
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358 }
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359
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486
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360 for (i = 0; i < mip->naddrs; i++) {
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361 mip->addrs[i].addr = in_addr[i].addr;
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362 mip->addrs[i].ctx = in_addr[i].ctx;
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290
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363
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382
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364 text = ngx_pnalloc(cf->pool,
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400
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365 NGX_INET_ADDRSTRLEN + sizeof(":65535") - 1);
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290
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366 if (text == NULL) {
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367 return NGX_CONF_ERROR;
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368 }
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369
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370 len = ngx_inet_ntop(AF_INET, &in_addr[i].addr, text,
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400
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371 NGX_INET_ADDRSTRLEN);
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290
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372
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373 len = ngx_sprintf(text + len, ":%d", in_port[p].port) - text;
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374
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486
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375 mip->addrs[i].addr_text.len = len;
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376 mip->addrs[i].addr_text.data = text;
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404
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377
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378 #if (NGX_MAIL_SSL)
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486
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379 mip->addrs[i].ssl = in_addr[i].ssl;
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404
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380 #endif
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290
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381 }
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382
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383 if (done) {
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384 break;
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385 }
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386
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387 in_addr++;
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388 in_port[p].addrs.elts = in_addr;
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389 last--;
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390
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391 a = 0;
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392 }
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393 }
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394
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395 return NGX_CONF_OK;
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396 }
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397
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398
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372
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399 static ngx_int_t
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290
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400 ngx_mail_cmp_conf_in_addrs(const void *one, const void *two)
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401 {
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402 ngx_mail_conf_in_addr_t *first, *second;
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403
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404 first = (ngx_mail_conf_in_addr_t *) one;
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405 second = (ngx_mail_conf_in_addr_t *) two;
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406
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407 if (first->addr == INADDR_ANY) {
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408 /* the INADDR_ANY must be the last resort, shift it to the end */
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409 return 1;
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410 }
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411
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412 if (first->bind && !second->bind) {
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413 /* shift explicit bind()ed addresses to the start */
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414 return -1;
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|
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415 }
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416
|
|
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417 if (!first->bind && second->bind) {
|
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418 /* shift explicit bind()ed addresses to the start */
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419 return 1;
|
|
|
420 }
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|
421
|
|
|
422 /* do not sort by default */
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|
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423
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|
|
424 return 0;
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|
|
425 }
|
