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76
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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 #ifndef _NGX_IMAP_H_INCLUDED_
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8 #define _NGX_IMAP_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13 #include <ngx_event.h>
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14 #include <ngx_event_connect.h>
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15
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88
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16 #if (NGX_IMAP_SSL)
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17 #include <ngx_imap_ssl_module.h>
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18 #endif
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19
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20
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76
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21
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22 typedef struct {
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132
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23 void **main_conf;
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24 void **srv_conf;
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76
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25 } ngx_imap_conf_ctx_t;
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26
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27
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28 typedef struct {
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190
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29 in_addr_t addr;
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30 in_port_t port;
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31 int family;
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32
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33 /* server ctx */
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34 ngx_imap_conf_ctx_t *ctx;
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35
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36 unsigned bind:1;
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37 } ngx_imap_listen_t;
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38
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39
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40 typedef struct {
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41 in_addr_t addr;
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42 ngx_imap_conf_ctx_t *ctx;
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43 ngx_str_t addr_text;
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44 } ngx_imap_in_addr_t;
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45
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46
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47 typedef struct {
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48 ngx_imap_in_addr_t *addrs; /* array of ngx_imap_in_addr_t */
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49 ngx_uint_t naddrs;
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50 } ngx_imap_in_port_t;
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51
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52
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53 typedef struct {
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54 in_port_t port;
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55 ngx_array_t addrs; /* array of ngx_imap_conf_in_addr_t */
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56 } ngx_imap_conf_in_port_t;
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57
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58
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59 typedef struct {
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60 in_addr_t addr;
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61 ngx_imap_conf_ctx_t *ctx;
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62 unsigned bind:1;
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63 } ngx_imap_conf_in_addr_t;
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64
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65
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66 typedef struct {
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67 ngx_array_t servers; /* ngx_imap_core_srv_conf_t */
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68 ngx_array_t listen; /* ngx_imap_listen_t */
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76
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69 } ngx_imap_core_main_conf_t;
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70
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71
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72 #define NGX_IMAP_POP3_PROTOCOL 0
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73 #define NGX_IMAP_IMAP_PROTOCOL 1
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74
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75 typedef struct {
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132
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76 ngx_msec_t timeout;
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76
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77
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132
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78 size_t imap_client_buffer_size;
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76
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79
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132
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80 ngx_uint_t protocol;
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76
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81
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136
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82 ngx_flag_t so_keepalive;
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83
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132
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84 ngx_str_t pop3_capability;
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85 ngx_str_t pop3_starttls_capability;
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86 ngx_str_t imap_capability;
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87 ngx_str_t imap_starttls_capability;
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88 ngx_str_t imap_starttls_only_capability;
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76
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89
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132
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90 ngx_array_t pop3_capabilities;
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91 ngx_array_t imap_capabilities;
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76
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92
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93 /* server ctx */
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190
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94 ngx_imap_conf_ctx_t *ctx;
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76
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95 } ngx_imap_core_srv_conf_t;
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96
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97
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98 typedef struct {
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132
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99 void *(*create_main_conf)(ngx_conf_t *cf);
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100 char *(*init_main_conf)(ngx_conf_t *cf, void *conf);
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76
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101
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132
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102 void *(*create_srv_conf)(ngx_conf_t *cf);
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103 char *(*merge_srv_conf)(ngx_conf_t *cf, void *prev,
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104 void *conf);
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76
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105 } ngx_imap_module_t;
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106
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107
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108 typedef enum {
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109 ngx_imap_start = 0,
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110 ngx_imap_login,
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111 ngx_imap_user,
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112 ngx_imap_passwd,
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113 } ngx_imap_state_e;
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114
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115
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116 typedef enum {
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117 ngx_pop3_start = 0,
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118 ngx_pop3_user,
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119 ngx_pop3_passwd
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120 } ngx_po3_state_e;
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121
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122
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123 typedef struct {
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124 ngx_peer_connection_t upstream;
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125 ngx_buf_t *buffer;
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126 } ngx_imap_proxy_ctx_t;
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127
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128
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129 typedef struct {
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130 uint32_t signature; /* "IMAP" */
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131
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132 ngx_connection_t *connection;
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133
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88
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134 ngx_str_t out;
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135 ngx_buf_t *buffer;
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136
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137 void **ctx;
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138 void **main_conf;
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139 void **srv_conf;
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140
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141 ngx_imap_proxy_ctx_t *proxy;
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142
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143 ngx_uint_t imap_state;
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144
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88
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145 unsigned blocked:1;
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146 unsigned quit:1;
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76
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147 unsigned protocol:1;
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148 unsigned quoted:1;
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92
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149 unsigned backslash:1;
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150 unsigned no_sync_literal:1;
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190
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151 unsigned starttls:1;
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76
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152
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153 ngx_str_t login;
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154 ngx_str_t passwd;
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155
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156 ngx_str_t tag;
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88
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157 ngx_str_t tagged_line;
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158
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190
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159 ngx_str_t *addr_text;
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160
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76
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161 ngx_uint_t command;
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162 ngx_array_t args;
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163
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164 ngx_uint_t login_attempt;
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165
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166 /* used to parse IMAP/POP3 command */
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167
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168 ngx_uint_t state;
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169 u_char *cmd_start;
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170 u_char *arg_start;
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171 u_char *arg_end;
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172 ngx_uint_t literal_len;
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173 } ngx_imap_session_t;
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174
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175
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90
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176 typedef struct {
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132
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177 ngx_str_t *client;
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178 ngx_imap_session_t *session;
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90
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179 } ngx_imap_log_ctx_t;
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180
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181
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76
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182 #define NGX_POP3_USER 1
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183 #define NGX_POP3_PASS 2
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184 #define NGX_POP3_CAPA 3
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185 #define NGX_POP3_QUIT 4
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186 #define NGX_POP3_NOOP 5
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132
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187 #define NGX_POP3_STLS 6
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188 #define NGX_POP3_APOP 7
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189 #define NGX_POP3_STAT 8
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190 #define NGX_POP3_LIST 9
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191 #define NGX_POP3_RETR 10
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192 #define NGX_POP3_DELE 11
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193 #define NGX_POP3_RSET 12
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194 #define NGX_POP3_TOP 13
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195 #define NGX_POP3_UIDL 14
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76
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196
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197
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198 #define NGX_IMAP_LOGIN 1
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199 #define NGX_IMAP_LOGOUT 2
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200 #define NGX_IMAP_CAPABILITY 3
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201 #define NGX_IMAP_NOOP 4
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132
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202 #define NGX_IMAP_STARTTLS 5
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203
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132
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204 #define NGX_IMAP_NEXT 6
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76
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205
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206
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207 #define NGX_IMAP_PARSE_INVALID_COMMAND 20
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208
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209
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210 #define NGX_IMAP_MODULE 0x50414D49 /* "IMAP" */
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211
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212 #define NGX_IMAP_MAIN_CONF 0x02000000
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213 #define NGX_IMAP_SRV_CONF 0x04000000
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214
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215
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216 #define NGX_IMAP_MAIN_CONF_OFFSET offsetof(ngx_imap_conf_ctx_t, main_conf)
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217 #define NGX_IMAP_SRV_CONF_OFFSET offsetof(ngx_imap_conf_ctx_t, srv_conf)
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218
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219
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220 #define ngx_imap_get_module_ctx(s, module) (s)->ctx[module.ctx_index]
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221 #define ngx_imap_set_ctx(s, c, module) s->ctx[module.ctx_index] = c;
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222 #define ngx_imap_delete_ctx(s, module) s->ctx[module.ctx_index] = NULL;
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223
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224
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225 #define ngx_imap_get_module_main_conf(s, module) \
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226 (s)->main_conf[module.ctx_index]
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227 #define ngx_imap_get_module_srv_conf(s, module) (s)->srv_conf[module.ctx_index]
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228
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190
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229 #define ngx_imap_conf_get_module_main_conf(cf, module) \
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230 ((ngx_imap_conf_ctx_t *) cf->ctx)->main_conf[module.ctx_index]
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231
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232
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233 void ngx_imap_init_connection(ngx_connection_t *c);
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234 void ngx_imap_send(ngx_event_t *wev);
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235 void ngx_imap_auth_state(ngx_event_t *rev);
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236 void ngx_pop3_auth_state(ngx_event_t *rev);
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237 void ngx_imap_close_connection(ngx_connection_t *c);
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238 void ngx_imap_session_internal_server_error(ngx_imap_session_t *s);
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239
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240 ngx_int_t ngx_imap_parse_command(ngx_imap_session_t *s);
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241 ngx_int_t ngx_pop3_parse_command(ngx_imap_session_t *s);
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242
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243
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244 /* STUB */
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245 void ngx_imap_proxy_init(ngx_imap_session_t *s, ngx_peers_t *peers);
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246 void ngx_imap_auth_http_init(ngx_imap_session_t *s);
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247 /**/
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248
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249
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250 extern ngx_uint_t ngx_imap_max_module;
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251 extern ngx_module_t ngx_imap_core_module;
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252
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253
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254 #endif /* _NGX_IMAP_H_INCLUDED_ */
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