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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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587
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78 { ngx_string("so_keepalive"),
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79 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_FLAG,
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80 ngx_conf_set_flag_slot,
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81 NGX_IMAP_SRV_CONF_OFFSET,
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82 offsetof(ngx_imap_core_srv_conf_t, so_keepalive),
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83 NULL },
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84
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521
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85 { ngx_string("timeout"),
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86 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
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87 ngx_conf_set_msec_slot,
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88 NGX_IMAP_SRV_CONF_OFFSET,
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89 offsetof(ngx_imap_core_srv_conf_t, timeout),
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90 NULL },
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91
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527
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92 { ngx_string("pop3_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, pop3_capabilities),
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97 NULL },
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98
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99 { ngx_string("imap_capabilities"),
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100 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_1MORE,
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101 ngx_imap_core_capability,
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102 NGX_IMAP_SRV_CONF_OFFSET,
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103 offsetof(ngx_imap_core_srv_conf_t, imap_capabilities),
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104 NULL },
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105
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521
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106 ngx_null_command
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107 };
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108
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109
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110 static ngx_imap_module_t ngx_imap_core_module_ctx = {
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111 ngx_imap_core_create_main_conf, /* create main configuration */
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112 NULL, /* init main configuration */
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113
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114 ngx_imap_core_create_srv_conf, /* create server configuration */
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115 ngx_imap_core_merge_srv_conf /* merge server configuration */
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116 };
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117
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118
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119 ngx_module_t ngx_imap_core_module = {
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120 NGX_MODULE_V1,
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121 &ngx_imap_core_module_ctx, /* module context */
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122 ngx_imap_core_commands, /* module directives */
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123 NGX_IMAP_MODULE, /* module type */
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541
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124 NULL, /* init master */
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521
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125 NULL, /* init module */
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541
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126 NULL, /* init process */
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127 NULL, /* init thread */
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128 NULL, /* exit thread */
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129 NULL, /* exit process */
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130 NULL, /* exit master */
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131 NGX_MODULE_V1_PADDING
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521
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132 };
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133
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134
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135 static void *
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136 ngx_imap_core_create_main_conf(ngx_conf_t *cf)
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577
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137 {
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521
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138 ngx_imap_core_main_conf_t *cmcf;
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139
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140 cmcf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_core_main_conf_t));
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141 if (cmcf == NULL) {
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142 return NGX_CONF_ERROR;
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143 }
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144
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145 if (ngx_array_init(&cmcf->servers, cf->pool, 4,
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146 sizeof(ngx_imap_core_srv_conf_t *)) == NGX_ERROR)
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147 {
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148 return NGX_CONF_ERROR;
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149 }
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150
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151 return cmcf;
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152 }
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153
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154
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155 static void *
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156 ngx_imap_core_create_srv_conf(ngx_conf_t *cf)
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577
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157 {
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521
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158 ngx_imap_core_srv_conf_t *cscf;
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577
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159
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521
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160 cscf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_core_srv_conf_t));
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161 if (cscf == NULL) {
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527
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162 return NULL;
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521
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163 }
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164
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165 cscf->imap_client_buffer_size = NGX_CONF_UNSET_SIZE;
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587
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166 cscf->protocol = NGX_CONF_UNSET_UINT;
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521
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167 cscf->timeout = NGX_CONF_UNSET_MSEC;
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587
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168 cscf->so_keepalive = NGX_CONF_UNSET;
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521
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169
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527
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170 if (ngx_array_init(&cscf->pop3_capabilities, cf->pool, 4, sizeof(ngx_str_t))
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171 != NGX_OK)
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172 {
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173 return NULL;
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174 }
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175
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176 if (ngx_array_init(&cscf->imap_capabilities, cf->pool, 4, sizeof(ngx_str_t))
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177 != NGX_OK)
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178 {
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179 return NULL;
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180 }
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181
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521
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182 return cscf;
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183 }
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184
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185
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186 static char *
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187 ngx_imap_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
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188 {
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189 ngx_imap_core_srv_conf_t *prev = parent;
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190 ngx_imap_core_srv_conf_t *conf = child;
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191
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192 u_char *p;
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193 size_t size;
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194 ngx_str_t *c, *d;
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195 ngx_uint_t i;
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196
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521
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197 ngx_conf_merge_size_value(conf->imap_client_buffer_size,
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198 prev->imap_client_buffer_size,
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199 (size_t) ngx_pagesize);
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200 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000);
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201 ngx_conf_merge_unsigned_value(conf->protocol, prev->protocol,
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202 NGX_IMAP_IMAP_PROTOCOL);
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587
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203 ngx_conf_merge_value(conf->so_keepalive, prev->so_keepalive, 0);
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521
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204
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527
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205
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206 if (conf->pop3_capabilities.nelts == 0) {
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207 conf->pop3_capabilities = prev->pop3_capabilities;
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208 }
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209
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210 if (conf->pop3_capabilities.nelts == 0) {
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211
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212 for (d = ngx_pop3_default_capabilities; d->len; d++) {
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213 c = ngx_array_push(&conf->pop3_capabilities);
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214 if (c == NULL) {
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215 return NGX_CONF_ERROR;
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216 }
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217
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218 *c = *d;
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219 }
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220 }
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221
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222 size = sizeof("+OK Capability list follows" CRLF) - 1
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223 + sizeof("." CRLF) - 1;
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224
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225 c = conf->pop3_capabilities.elts;
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226 for (i = 0; i < conf->pop3_capabilities.nelts; i++) {
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227 size += c[i].len + sizeof(CRLF) - 1;
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228 }
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229
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583
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230 p = ngx_palloc(cf->pool, size);
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231 if (p == NULL) {
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527
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232 return NGX_CONF_ERROR;
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233 }
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234
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583
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235 conf->pop3_capability.len = size;
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236 conf->pop3_capability.data = p;
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237
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238 p = ngx_cpymem(p, "+OK Capability list follows" CRLF,
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239 sizeof("+OK Capability list follows" CRLF) - 1);
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527
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240
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241 for (i = 0; i < conf->pop3_capabilities.nelts; i++) {
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583
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242 p = ngx_cpymem(p, c[i].data, c[i].len);
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243 *p++ = CR; *p++ = LF;
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527
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244 }
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245
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583
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246 *p++ = '.'; *p++ = CR; *p = LF;
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247
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248
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249 size += sizeof("STLS" CRLF) - 1;
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250
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251 p = ngx_palloc(cf->pool, size);
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252 if (p == NULL) {
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253 return NGX_CONF_ERROR;
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254 }
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255
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256 conf->pop3_starttls_capability.len = size;
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257 conf->pop3_starttls_capability.data = p;
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258
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259 p = ngx_cpymem(p, conf->pop3_capability.data,
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260 conf->pop3_capability.len - (sizeof("." CRLF) - 1));
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261
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262 p = ngx_cpymem(p, "STLS" CRLF, sizeof("STLS" CRLF) - 1);
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263 *p++ = '.'; *p++ = CR; *p = LF;
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527
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264
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265
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266 if (conf->imap_capabilities.nelts == 0) {
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267 conf->imap_capabilities = prev->imap_capabilities;
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268 }
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269
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270 if (conf->imap_capabilities.nelts == 0) {
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271
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272 for (d = ngx_imap_default_capabilities; d->len; d++) {
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273 c = ngx_array_push(&conf->imap_capabilities);
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274 if (c == NULL) {
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275 return NGX_CONF_ERROR;
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276 }
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277
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278 *c = *d;
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279 }
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280 }
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281
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282 size = sizeof("* CAPABILITY") - 1 + sizeof(CRLF) - 1;
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283
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284 c = conf->imap_capabilities.elts;
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285 for (i = 0; i < conf->imap_capabilities.nelts; i++) {
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286 size += 1 + c[i].len;
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287 }
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288
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583
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289 p = ngx_palloc(cf->pool, size);
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290 if (p == NULL) {
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291 return NGX_CONF_ERROR;
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292 }
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293
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294 conf->imap_capability.len = size;
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295 conf->imap_capability.data = p;
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296
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297 p = ngx_cpymem(p, "* CAPABILITY", sizeof("* CAPABILITY") - 1);
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298
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299 for (i = 0; i < conf->imap_capabilities.nelts; i++) {
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300 *p++ = ' ';
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301 p = ngx_cpymem(p, c[i].data, c[i].len);
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302 }
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303
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304 *p++ = CR; *p = LF;
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305
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306
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307 size += sizeof(" STARTTLS") - 1;
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308
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309 p = ngx_palloc(cf->pool, size);
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310 if (p == NULL) {
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527
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311 return NGX_CONF_ERROR;
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312 }
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313
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583
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314 conf->imap_starttls_capability.len = size;
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315 conf->imap_starttls_capability.data = p;
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527
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316
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583
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317 p = ngx_cpymem(p, conf->imap_capability.data,
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318 conf->imap_capability.len - (sizeof(CRLF) - 1));
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319 p = ngx_cpymem(p, " STARTTLS", sizeof(" STARTTLS") - 1);
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320 *p++ = CR; *p = LF;
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321
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322
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323 size += sizeof(" LOGINDISABLED") - 1;
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324
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325 p = ngx_palloc(cf->pool, size);
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326 if (p == NULL) {
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327 return NGX_CONF_ERROR;
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527
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328 }
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329
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583
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330 conf->imap_starttls_only_capability.len = size;
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331 conf->imap_starttls_only_capability.data = p;
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527
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332
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583
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333 p = ngx_cpymem(p, conf->imap_starttls_capability.data,
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334 conf->imap_starttls_capability.len - (sizeof(CRLF) - 1));
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335 p = ngx_cpymem(p, " LOGINDISABLED", sizeof(" LOGINDISABLED") - 1);
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336 *p++ = CR; *p = LF;
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337
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527
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338
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521
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339 return NGX_CONF_OK;
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340 }
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341
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342
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343 static char *
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344 ngx_imap_core_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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345 {
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346 char *rv;
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347 void *mconf;
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348 ngx_uint_t m;
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349 ngx_conf_t pcf;
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350 ngx_imap_module_t *module;
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351 ngx_imap_conf_ctx_t *ctx, *imap_ctx;
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352 ngx_imap_core_srv_conf_t *cscf, **cscfp;
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353 ngx_imap_core_main_conf_t *cmcf;
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354
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355
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356 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_imap_conf_ctx_t));
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357 if (ctx == NULL) {
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358 return NGX_CONF_ERROR;
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359 }
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360
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361 imap_ctx = cf->ctx;
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362 ctx->main_conf = imap_ctx->main_conf;
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577
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363
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521
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364 /* the server{}'s srv_conf */
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365
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366 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_imap_max_module);
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367 if (ctx->srv_conf == NULL) {
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368 return NGX_CONF_ERROR;
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369 }
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370
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371 for (m = 0; ngx_modules[m]; m++) {
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372 if (ngx_modules[m]->type != NGX_IMAP_MODULE) {
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373 continue;
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374 }
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375
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376 module = ngx_modules[m]->ctx;
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377
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378 if (module->create_srv_conf) {
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379 mconf = module->create_srv_conf(cf);
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380 if (mconf == NULL) {
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381 return NGX_CONF_ERROR;
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382 }
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383
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384 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
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385 }
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386 }
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387
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388 /* the server configuration context */
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389
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390 cscf = ctx->srv_conf[ngx_imap_core_module.ctx_index];
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391 cscf->ctx = ctx;
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392
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393 cmcf = ctx->main_conf[ngx_imap_core_module.ctx_index];
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394
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395 cscfp = ngx_array_push(&cmcf->servers);
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396 if (cscfp == NULL) {
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397 return NGX_CONF_ERROR;
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398 }
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399
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400 *cscfp = cscf;
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401
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402
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403 /* parse inside server{} */
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404
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405 pcf = *cf;
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406 cf->ctx = ctx;
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407 cf->cmd_type = NGX_IMAP_SRV_CONF;
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408
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409 rv = ngx_conf_parse(cf, NULL);
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410
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411 *cf = pcf;
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412
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413 return rv;
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414 }
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415
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416
|
|
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417 /* AF_INET only */
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418
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419 static char *
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420 ngx_imap_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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421 {
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422 char *err;
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423 ngx_str_t *value;
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424 in_addr_t in_addr;
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425 struct hostent *h;
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426 ngx_listening_t *ls;
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|
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427 ngx_inet_upstream_t inet_upstream;
|
|
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428
|
|
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429 value = cf->args->elts;
|
|
|
430
|
|
|
431 ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t));
|
|
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432
|
|
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433 inet_upstream.url = value[1];
|
|
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434 inet_upstream.port_only = 1;
|
|
|
435
|
|
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436 err = ngx_inet_parse_host_port(&inet_upstream);
|
|
|
437
|
|
|
438 if (err) {
|
|
|
439 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
523
|
440 "%s in \"%V\" of the \"listen\" directive",
|
|
|
441 err, &inet_upstream.url);
|
|
521
|
442 return NGX_CONF_ERROR;
|
|
|
443 }
|
|
|
444
|
|
619
|
445 if (inet_upstream.host.len == 1 && inet_upstream.host.data[0] == '*') {
|
|
|
446 inet_upstream.host.len = 0;
|
|
|
447 }
|
|
|
448
|
|
521
|
449 if (inet_upstream.host.len) {
|
|
|
450 inet_upstream.host.data[inet_upstream.host.len] = '\0';
|
|
|
451
|
|
|
452 in_addr = inet_addr((const char *) inet_upstream.host.data);
|
|
|
453
|
|
|
454 if (in_addr == INADDR_NONE) {
|
|
|
455 h = gethostbyname((const char *) inet_upstream.host.data);
|
|
577
|
456
|
|
521
|
457 if (h == NULL || h->h_addr_list[0] == NULL) {
|
|
|
458 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
459 "can not resolve host \"%s\" "
|
|
|
460 "in the \"listen\" directive",
|
|
|
461 inet_upstream.host.data);
|
|
|
462 return NGX_CONF_ERROR;
|
|
|
463 }
|
|
|
464
|
|
|
465 in_addr = *(in_addr_t *)(h->h_addr_list[0]);
|
|
|
466 }
|
|
|
467
|
|
|
468 } else {
|
|
|
469 in_addr = INADDR_ANY;
|
|
|
470 }
|
|
|
471
|
|
|
472
|
|
|
473 ls = ngx_listening_inet_stream_socket(cf, in_addr, inet_upstream.port);
|
|
|
474 if (ls == NULL) {
|
|
577
|
475 return NGX_CONF_ERROR;
|
|
521
|
476 }
|
|
|
477
|
|
|
478 ls->backlog = -1;
|
|
563
|
479 ls->rcvbuf = -1;
|
|
|
480 ls->sndbuf = -1;
|
|
|
481
|
|
521
|
482 ls->addr_ntop = 1;
|
|
|
483 ls->handler = ngx_imap_init_connection;
|
|
|
484 ls->pool_size = 256;
|
|
|
485
|
|
|
486 ls->ctx = cf->ctx;
|
|
|
487
|
|
|
488 /* STUB */
|
|
543
|
489 ls->log = *cf->cycle->new_log;
|
|
|
490 ls->log.data = &ls->addr_text;
|
|
|
491 ls->log.handler = ngx_accept_log_error;
|
|
521
|
492 /**/
|
|
|
493
|
|
|
494 return NGX_CONF_OK;
|
|
|
495 }
|
|
527
|
496
|
|
|
497
|
|
|
498 static char *
|
|
|
499 ngx_imap_core_capability(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
500 {
|
|
|
501 char *p = conf;
|
|
|
502
|
|
|
503 ngx_str_t *c, *value;
|
|
|
504 ngx_uint_t i;
|
|
|
505 ngx_array_t *a;
|
|
|
506
|
|
|
507 a = (ngx_array_t *) (p + cmd->offset);
|
|
|
508
|
|
|
509 value = cf->args->elts;
|
|
|
510
|
|
|
511 for (i = 1; i < cf->args->nelts; i++) {
|
|
|
512 c = ngx_array_push(a);
|
|
|
513 if (c == NULL) {
|
|
|
514 return NGX_CONF_ERROR;
|
|
|
515 }
|
|
|
516
|
|
|
517 *c = value[i];
|
|
|
518 }
|
|
|
519
|
|
|
520 return NGX_CONF_OK;
|
|
|
521 }
|
