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521
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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 void *ngx_imap_core_create_main_conf(ngx_conf_t *cf);
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14 static void *ngx_imap_core_create_srv_conf(ngx_conf_t *cf);
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15 static char *ngx_imap_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_imap_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_imap_core_listen(ngx_conf_t *cf, ngx_command_t *cmd,
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20 void *conf);
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527
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21 static char *ngx_imap_core_capability(ngx_conf_t *cf, ngx_command_t *cmd,
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22 void *conf);
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521
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23
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24
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25 static ngx_conf_enum_t ngx_imap_core_procotol[] = {
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26 { ngx_string("pop3"), NGX_IMAP_POP3_PROTOCOL },
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27 { ngx_string("imap"), NGX_IMAP_IMAP_PROTOCOL },
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28 { ngx_null_string, 0 }
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29 };
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30
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31
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527
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32 static ngx_str_t ngx_pop3_default_capabilities[] = {
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33 ngx_string("TOP"),
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34 ngx_string("USER"),
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35 ngx_string("UIDL"),
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36 ngx_null_string
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37 };
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38
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39
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40 static ngx_str_t ngx_imap_default_capabilities[] = {
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41 ngx_string("IMAP4"),
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42 ngx_string("IMAP4rev1"),
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43 ngx_string("UIDPLUS"),
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44 ngx_null_string
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45 };
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46
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47
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521
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48 static ngx_command_t ngx_imap_core_commands[] = {
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49
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50 { ngx_string("server"),
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51 NGX_IMAP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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52 ngx_imap_core_server,
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53 0,
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54 0,
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55 NULL },
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56
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57 { ngx_string("listen"),
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58 NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
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59 ngx_imap_core_listen,
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60 0,
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61 0,
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62 NULL },
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63
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64 { ngx_string("protocol"),
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65 NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
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66 ngx_conf_set_enum_slot,
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67 NGX_IMAP_SRV_CONF_OFFSET,
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68 offsetof(ngx_imap_core_srv_conf_t, protocol),
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69 &ngx_imap_core_procotol },
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70
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71 { ngx_string("imap_client_buffer"),
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72 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
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73 ngx_conf_set_size_slot,
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74 NGX_IMAP_SRV_CONF_OFFSET,
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75 offsetof(ngx_imap_core_srv_conf_t, imap_client_buffer_size),
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76 NULL },
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77
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78 { ngx_string("timeout"),
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79 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
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80 ngx_conf_set_msec_slot,
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81 NGX_IMAP_SRV_CONF_OFFSET,
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82 offsetof(ngx_imap_core_srv_conf_t, timeout),
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83 NULL },
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84
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527
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85 { ngx_string("pop3_capabilities"),
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86 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_1MORE,
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87 ngx_imap_core_capability,
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88 NGX_IMAP_SRV_CONF_OFFSET,
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89 offsetof(ngx_imap_core_srv_conf_t, pop3_capabilities),
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90 NULL },
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91
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92 { ngx_string("imap_capabilities"),
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93 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_1MORE,
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94 ngx_imap_core_capability,
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95 NGX_IMAP_SRV_CONF_OFFSET,
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96 offsetof(ngx_imap_core_srv_conf_t, imap_capabilities),
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97 NULL },
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98
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521
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99 ngx_null_command
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100 };
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101
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102
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103 static ngx_imap_module_t ngx_imap_core_module_ctx = {
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104 ngx_imap_core_create_main_conf, /* create main configuration */
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105 NULL, /* init main configuration */
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106
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107 ngx_imap_core_create_srv_conf, /* create server configuration */
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108 ngx_imap_core_merge_srv_conf /* merge server configuration */
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109 };
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110
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111
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112 ngx_module_t ngx_imap_core_module = {
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113 NGX_MODULE_V1,
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114 &ngx_imap_core_module_ctx, /* module context */
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115 ngx_imap_core_commands, /* module directives */
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116 NGX_IMAP_MODULE, /* module type */
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541
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117 NULL, /* init master */
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521
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118 NULL, /* init module */
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541
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119 NULL, /* init process */
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120 NULL, /* init thread */
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121 NULL, /* exit thread */
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122 NULL, /* exit process */
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123 NULL, /* exit master */
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124 NGX_MODULE_V1_PADDING
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521
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125 };
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126
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127
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128 static void *
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129 ngx_imap_core_create_main_conf(ngx_conf_t *cf)
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577
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130 {
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521
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131 ngx_imap_core_main_conf_t *cmcf;
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132
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133 cmcf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_core_main_conf_t));
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134 if (cmcf == NULL) {
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135 return NGX_CONF_ERROR;
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136 }
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137
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138 if (ngx_array_init(&cmcf->servers, cf->pool, 4,
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139 sizeof(ngx_imap_core_srv_conf_t *)) == NGX_ERROR)
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140 {
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141 return NGX_CONF_ERROR;
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142 }
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143
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144 return cmcf;
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145 }
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146
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147
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148 static void *
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149 ngx_imap_core_create_srv_conf(ngx_conf_t *cf)
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577
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150 {
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521
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151 ngx_imap_core_srv_conf_t *cscf;
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577
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152
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521
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153 cscf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_core_srv_conf_t));
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154 if (cscf == NULL) {
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527
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155 return NULL;
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521
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156 }
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157
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158 cscf->imap_client_buffer_size = NGX_CONF_UNSET_SIZE;
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159 cscf->timeout = NGX_CONF_UNSET_MSEC;
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160 cscf->protocol = NGX_CONF_UNSET_UINT;
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161
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527
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162 if (ngx_array_init(&cscf->pop3_capabilities, cf->pool, 4, sizeof(ngx_str_t))
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163 != NGX_OK)
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164 {
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165 return NULL;
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166 }
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167
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168 if (ngx_array_init(&cscf->imap_capabilities, cf->pool, 4, sizeof(ngx_str_t))
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169 != NGX_OK)
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170 {
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171 return NULL;
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172 }
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173
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521
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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_imap_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
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180 {
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181 ngx_imap_core_srv_conf_t *prev = parent;
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182 ngx_imap_core_srv_conf_t *conf = child;
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183
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583
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184 u_char *p;
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527
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185 size_t size;
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186 ngx_str_t *c, *d;
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187 ngx_uint_t i;
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188
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521
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189 ngx_conf_merge_size_value(conf->imap_client_buffer_size,
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190 prev->imap_client_buffer_size,
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191 (size_t) ngx_pagesize);
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192 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000);
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193 ngx_conf_merge_unsigned_value(conf->protocol, prev->protocol,
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194 NGX_IMAP_IMAP_PROTOCOL);
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195
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527
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196
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197 if (conf->pop3_capabilities.nelts == 0) {
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198 conf->pop3_capabilities = prev->pop3_capabilities;
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199 }
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200
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201 if (conf->pop3_capabilities.nelts == 0) {
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202
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203 for (d = ngx_pop3_default_capabilities; d->len; d++) {
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204 c = ngx_array_push(&conf->pop3_capabilities);
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205 if (c == NULL) {
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206 return NGX_CONF_ERROR;
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207 }
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208
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209 *c = *d;
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210 }
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211 }
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212
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213 size = sizeof("+OK Capability list follows" CRLF) - 1
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214 + sizeof("." CRLF) - 1;
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215
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216 c = conf->pop3_capabilities.elts;
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217 for (i = 0; i < conf->pop3_capabilities.nelts; i++) {
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218 size += c[i].len + sizeof(CRLF) - 1;
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219 }
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220
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583
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221 p = ngx_palloc(cf->pool, size);
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222 if (p == NULL) {
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527
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223 return NGX_CONF_ERROR;
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224 }
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225
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583
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226 conf->pop3_capability.len = size;
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227 conf->pop3_capability.data = p;
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228
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229 p = ngx_cpymem(p, "+OK Capability list follows" CRLF,
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230 sizeof("+OK Capability list follows" CRLF) - 1);
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527
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231
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232 for (i = 0; i < conf->pop3_capabilities.nelts; i++) {
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233 p = ngx_cpymem(p, c[i].data, c[i].len);
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234 *p++ = CR; *p++ = LF;
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527
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235 }
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236
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583
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237 *p++ = '.'; *p++ = CR; *p = LF;
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238
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239
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240 size += sizeof("STLS" CRLF) - 1;
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527
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241
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583
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242 p = ngx_palloc(cf->pool, size);
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243 if (p == NULL) {
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244 return NGX_CONF_ERROR;
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245 }
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246
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247 conf->pop3_starttls_capability.len = size;
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248 conf->pop3_starttls_capability.data = p;
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249
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250 p = ngx_cpymem(p, conf->pop3_capability.data,
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251 conf->pop3_capability.len - (sizeof("." CRLF) - 1));
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252
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253 p = ngx_cpymem(p, "STLS" CRLF, sizeof("STLS" CRLF) - 1);
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254 *p++ = '.'; *p++ = CR; *p = LF;
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527
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255
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256
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257 if (conf->imap_capabilities.nelts == 0) {
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258 conf->imap_capabilities = prev->imap_capabilities;
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259 }
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260
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261 if (conf->imap_capabilities.nelts == 0) {
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262
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263 for (d = ngx_imap_default_capabilities; d->len; d++) {
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264 c = ngx_array_push(&conf->imap_capabilities);
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265 if (c == NULL) {
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266 return NGX_CONF_ERROR;
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267 }
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268
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269 *c = *d;
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270 }
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271 }
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272
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273 size = sizeof("* CAPABILITY") - 1 + sizeof(CRLF) - 1;
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274
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275 c = conf->imap_capabilities.elts;
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276 for (i = 0; i < conf->imap_capabilities.nelts; i++) {
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277 size += 1 + c[i].len;
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278 }
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279
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280 p = ngx_palloc(cf->pool, size);
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281 if (p == NULL) {
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282 return NGX_CONF_ERROR;
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283 }
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284
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285 conf->imap_capability.len = size;
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286 conf->imap_capability.data = p;
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287
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288 p = ngx_cpymem(p, "* CAPABILITY", sizeof("* CAPABILITY") - 1);
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289
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290 for (i = 0; i < conf->imap_capabilities.nelts; i++) {
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291 *p++ = ' ';
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292 p = ngx_cpymem(p, c[i].data, c[i].len);
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293 }
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294
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295 *p++ = CR; *p = LF;
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296
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297
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298 size += sizeof(" STARTTLS") - 1;
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299
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300 p = ngx_palloc(cf->pool, size);
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301 if (p == NULL) {
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527
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302 return NGX_CONF_ERROR;
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303 }
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304
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583
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305 conf->imap_starttls_capability.len = size;
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306 conf->imap_starttls_capability.data = p;
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527
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307
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583
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308 p = ngx_cpymem(p, conf->imap_capability.data,
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309 conf->imap_capability.len - (sizeof(CRLF) - 1));
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310 p = ngx_cpymem(p, " STARTTLS", sizeof(" STARTTLS") - 1);
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311 *p++ = CR; *p = LF;
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312
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313
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314 size += sizeof(" LOGINDISABLED") - 1;
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315
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316 p = ngx_palloc(cf->pool, size);
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317 if (p == NULL) {
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318 return NGX_CONF_ERROR;
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527
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319 }
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320
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583
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321 conf->imap_starttls_only_capability.len = size;
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322 conf->imap_starttls_only_capability.data = p;
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527
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323
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583
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324 p = ngx_cpymem(p, conf->imap_starttls_capability.data,
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325 conf->imap_starttls_capability.len - (sizeof(CRLF) - 1));
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326 p = ngx_cpymem(p, " LOGINDISABLED", sizeof(" LOGINDISABLED") - 1);
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327 *p++ = CR; *p = LF;
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328
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527
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329
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521
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330 return NGX_CONF_OK;
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331 }
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332
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333
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334 static char *
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335 ngx_imap_core_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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336 {
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337 char *rv;
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338 void *mconf;
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339 ngx_uint_t m;
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340 ngx_conf_t pcf;
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341 ngx_imap_module_t *module;
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342 ngx_imap_conf_ctx_t *ctx, *imap_ctx;
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343 ngx_imap_core_srv_conf_t *cscf, **cscfp;
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344 ngx_imap_core_main_conf_t *cmcf;
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345
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346
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347 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_imap_conf_ctx_t));
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348 if (ctx == NULL) {
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349 return NGX_CONF_ERROR;
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350 }
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351
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352 imap_ctx = cf->ctx;
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353 ctx->main_conf = imap_ctx->main_conf;
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577
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354
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521
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355 /* the server{}'s srv_conf */
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356
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357 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_imap_max_module);
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358 if (ctx->srv_conf == NULL) {
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359 return NGX_CONF_ERROR;
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360 }
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361
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362 for (m = 0; ngx_modules[m]; m++) {
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363 if (ngx_modules[m]->type != NGX_IMAP_MODULE) {
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364 continue;
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365 }
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366
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367 module = ngx_modules[m]->ctx;
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368
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369 if (module->create_srv_conf) {
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370 mconf = module->create_srv_conf(cf);
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371 if (mconf == NULL) {
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372 return NGX_CONF_ERROR;
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373 }
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374
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375 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
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376 }
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377 }
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378
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379 /* the server configuration context */
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380
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381 cscf = ctx->srv_conf[ngx_imap_core_module.ctx_index];
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382 cscf->ctx = ctx;
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383
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384 cmcf = ctx->main_conf[ngx_imap_core_module.ctx_index];
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385
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386 cscfp = ngx_array_push(&cmcf->servers);
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387 if (cscfp == NULL) {
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388 return NGX_CONF_ERROR;
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389 }
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390
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391 *cscfp = cscf;
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392
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393
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394 /* parse inside server{} */
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395
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396 pcf = *cf;
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397 cf->ctx = ctx;
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398 cf->cmd_type = NGX_IMAP_SRV_CONF;
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399
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400 rv = ngx_conf_parse(cf, NULL);
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401
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402 *cf = pcf;
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403
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404 return rv;
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405 }
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406
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407
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408 /* AF_INET only */
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409
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410 static char *
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411 ngx_imap_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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412 {
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413 char *err;
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414 ngx_str_t *value;
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415 in_addr_t in_addr;
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416 struct hostent *h;
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417 ngx_listening_t *ls;
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418 ngx_inet_upstream_t inet_upstream;
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419
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420 value = cf->args->elts;
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421
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422 ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t));
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423
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424 inet_upstream.url = value[1];
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425 inet_upstream.port_only = 1;
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426
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427 err = ngx_inet_parse_host_port(&inet_upstream);
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428
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|
|
429 if (err) {
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|
|
430 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
523
|
431 "%s in \"%V\" of the \"listen\" directive",
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|
|
432 err, &inet_upstream.url);
|
|
521
|
433 return NGX_CONF_ERROR;
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|
|
434 }
|
|
|
435
|
|
|
436 if (inet_upstream.host.len) {
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|
|
437 inet_upstream.host.data[inet_upstream.host.len] = '\0';
|
|
|
438
|
|
|
439 in_addr = inet_addr((const char *) inet_upstream.host.data);
|
|
|
440
|
|
|
441 if (in_addr == INADDR_NONE) {
|
|
|
442 h = gethostbyname((const char *) inet_upstream.host.data);
|
|
577
|
443
|
|
521
|
444 if (h == NULL || h->h_addr_list[0] == NULL) {
|
|
|
445 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
446 "can not resolve host \"%s\" "
|
|
|
447 "in the \"listen\" directive",
|
|
|
448 inet_upstream.host.data);
|
|
|
449 return NGX_CONF_ERROR;
|
|
|
450 }
|
|
|
451
|
|
|
452 in_addr = *(in_addr_t *)(h->h_addr_list[0]);
|
|
|
453 }
|
|
|
454
|
|
|
455 } else {
|
|
|
456 in_addr = INADDR_ANY;
|
|
|
457 }
|
|
|
458
|
|
|
459
|
|
|
460 ls = ngx_listening_inet_stream_socket(cf, in_addr, inet_upstream.port);
|
|
|
461 if (ls == NULL) {
|
|
577
|
462 return NGX_CONF_ERROR;
|
|
521
|
463 }
|
|
|
464
|
|
|
465 ls->backlog = -1;
|
|
563
|
466 ls->rcvbuf = -1;
|
|
|
467 ls->sndbuf = -1;
|
|
|
468
|
|
521
|
469 ls->addr_ntop = 1;
|
|
|
470 ls->handler = ngx_imap_init_connection;
|
|
|
471 ls->pool_size = 256;
|
|
|
472
|
|
|
473 ls->ctx = cf->ctx;
|
|
|
474
|
|
|
475 /* STUB */
|
|
543
|
476 ls->log = *cf->cycle->new_log;
|
|
|
477 ls->log.data = &ls->addr_text;
|
|
|
478 ls->log.handler = ngx_accept_log_error;
|
|
521
|
479 /**/
|
|
|
480
|
|
|
481 return NGX_CONF_OK;
|
|
|
482 }
|
|
527
|
483
|
|
|
484
|
|
|
485 static char *
|
|
|
486 ngx_imap_core_capability(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
487 {
|
|
|
488 char *p = conf;
|
|
|
489
|
|
|
490 ngx_str_t *c, *value;
|
|
|
491 ngx_uint_t i;
|
|
|
492 ngx_array_t *a;
|
|
|
493
|
|
|
494 a = (ngx_array_t *) (p + cmd->offset);
|
|
|
495
|
|
|
496 value = cf->args->elts;
|
|
|
497
|
|
|
498 for (i = 1; i < cf->args->nelts; i++) {
|
|
|
499 c = ngx_array_push(a);
|
|
|
500 if (c == NULL) {
|
|
|
501 return NGX_CONF_ERROR;
|
|
|
502 }
|
|
|
503
|
|
|
504 *c = value[i];
|
|
|
505 }
|
|
|
506
|
|
|
507 return NGX_CONF_OK;
|
|
|
508 }
|
