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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_imap.h>
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11
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12
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13 static char *ngx_imap_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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14
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15
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16 ngx_uint_t ngx_imap_max_module;
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17
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18
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19 static ngx_command_t ngx_imap_commands[] = {
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20
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21 { ngx_string("imap"),
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22 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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23 ngx_imap_block,
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24 0,
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25 0,
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26 NULL },
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27
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28 ngx_null_command
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29 };
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30
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31
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32 static ngx_core_module_t ngx_imap_module_ctx = {
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33 ngx_string("imap"),
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34 NULL,
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35 NULL
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36 };
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37
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38
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39 ngx_module_t ngx_imap_module = {
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40 NGX_MODULE_V1,
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41 &ngx_imap_module_ctx, /* module context */
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42 ngx_imap_commands, /* module directives */
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43 NGX_CORE_MODULE, /* module type */
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44 NULL, /* init master */
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45 NULL, /* init module */
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46 NULL, /* init process */
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47 NULL, /* init thread */
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48 NULL, /* exit thread */
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49 NULL, /* exit process */
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50 NULL, /* exit master */
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51 NGX_MODULE_V1_PADDING
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52 };
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53
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54
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55 static char *
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56 ngx_imap_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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57 {
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58 char *rv;
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59 ngx_uint_t m, mi, s;
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60 ngx_conf_t pcf;
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61 ngx_imap_module_t *module;
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62 ngx_imap_conf_ctx_t *ctx;
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63 ngx_imap_core_srv_conf_t **cscfp;
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64 ngx_imap_core_main_conf_t *cmcf;
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65
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66 /* the main imap context */
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67
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68 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_imap_conf_ctx_t));
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69 if (ctx == NULL) {
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70 return NGX_CONF_ERROR;
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71 }
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72
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73 *(ngx_imap_conf_ctx_t **) conf = ctx;
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74
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75 /* count the number of the http modules and set up their indices */
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76
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77 ngx_imap_max_module = 0;
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78 for (m = 0; ngx_modules[m]; m++) {
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79 if (ngx_modules[m]->type != NGX_IMAP_MODULE) {
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80 continue;
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81 }
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82
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83 ngx_modules[m]->ctx_index = ngx_imap_max_module++;
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84 }
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85
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86
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87 /* the imap main_conf context, it is the same in the all imap contexts */
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88
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89 ctx->main_conf = ngx_pcalloc(cf->pool,
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90 sizeof(void *) * ngx_imap_max_module);
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91 if (ctx->main_conf == NULL) {
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92 return NGX_CONF_ERROR;
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93 }
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94
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95
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96 /*
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97 * the imap null srv_conf context, it is used to merge
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98 * the server{}s' srv_conf's
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99 */
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100
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101 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_imap_max_module);
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102 if (ctx->srv_conf == NULL) {
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103 return NGX_CONF_ERROR;
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104 }
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105
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106
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107 /*
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108 * create the main_conf's, the null srv_conf's, and the null loc_conf's
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109 * of the all imap modules
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110 */
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111
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112 for (m = 0; ngx_modules[m]; m++) {
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113 if (ngx_modules[m]->type != NGX_IMAP_MODULE) {
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114 continue;
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115 }
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116
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117 module = ngx_modules[m]->ctx;
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118 mi = ngx_modules[m]->ctx_index;
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119
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120 if (module->create_main_conf) {
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121 ctx->main_conf[mi] = module->create_main_conf(cf);
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122 if (ctx->main_conf[mi] == NULL) {
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123 return NGX_CONF_ERROR;
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124 }
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125 }
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126
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127 if (module->create_srv_conf) {
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128 ctx->srv_conf[mi] = module->create_srv_conf(cf);
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129 if (ctx->srv_conf[mi] == NULL) {
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130 return NGX_CONF_ERROR;
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131 }
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132 }
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133 }
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134
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135
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136 /* parse inside the imap{} block */
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137
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138 pcf = *cf;
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139 cf->ctx = ctx;
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140
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141 cf->module_type = NGX_IMAP_MODULE;
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142 cf->cmd_type = NGX_IMAP_MAIN_CONF;
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143 rv = ngx_conf_parse(cf, NULL);
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144
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145 if (rv != NGX_CONF_OK) {
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146 *cf = pcf;
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147 return rv;
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148 }
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149
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150
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151 /* init imap{} main_conf's, merge the server{}s' srv_conf's */
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152
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153 cmcf = ctx->main_conf[ngx_imap_core_module.ctx_index];
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154 cscfp = cmcf->servers.elts;
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155
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156 for (m = 0; ngx_modules[m]; m++) {
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157 if (ngx_modules[m]->type != NGX_IMAP_MODULE) {
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158 continue;
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159 }
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160
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161 module = ngx_modules[m]->ctx;
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162 mi = ngx_modules[m]->ctx_index;
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163
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164 /* init imap{} main_conf's */
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165
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166 if (module->init_main_conf) {
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167 rv = module->init_main_conf(cf, ctx->main_conf[mi]);
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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 for (s = 0; s < cmcf->servers.nelts; s++) {
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175
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176 /* merge the server{}s' srv_conf's */
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177
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178 if (module->merge_srv_conf) {
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179 rv = module->merge_srv_conf(cf,
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180 ctx->srv_conf[mi],
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181 cscfp[s]->ctx->srv_conf[mi]);
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182 if (rv != NGX_CONF_OK) {
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183 *cf = pcf;
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184 return rv;
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185 }
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186 }
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187 }
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188 }
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189
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190 /* imap{}'s cf->ctx was needed while the configuration merging */
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191
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192 *cf = pcf;
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193
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194 return NGX_CONF_OK;
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195 }
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