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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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23 void **main_conf;
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24 void **srv_conf;
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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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29 ngx_array_t servers; /* ngx_imap_core_srv_conf_t */
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30 } ngx_imap_core_main_conf_t;
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31
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32
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33 #define NGX_IMAP_POP3_PROTOCOL 0
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34 #define NGX_IMAP_IMAP_PROTOCOL 1
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35
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36 typedef struct {
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37 ngx_msec_t timeout;
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38
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39 size_t imap_client_buffer_size;
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40
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41 ngx_uint_t protocol;
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42
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43 ngx_buf_t *pop3_capability;
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44 ngx_buf_t *imap_capability;
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45
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46 ngx_array_t pop3_capabilities;
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47 ngx_array_t imap_capabilities;
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48
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49 /* server ctx */
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50 ngx_imap_conf_ctx_t *ctx;
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51 } ngx_imap_core_srv_conf_t;
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52
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53
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54 typedef struct {
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55 void *(*create_main_conf)(ngx_conf_t *cf);
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56 char *(*init_main_conf)(ngx_conf_t *cf, void *conf);
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57
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58 void *(*create_srv_conf)(ngx_conf_t *cf);
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59 char *(*merge_srv_conf)(ngx_conf_t *cf, void *prev, void *conf);
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60 } ngx_imap_module_t;
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61
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62
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63 typedef enum {
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64 ngx_imap_start = 0,
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65 ngx_imap_login,
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66 ngx_imap_user,
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67 ngx_imap_passwd,
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68 } ngx_imap_state_e;
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69
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70
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71 typedef enum {
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72 ngx_pop3_start = 0,
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73 ngx_pop3_user,
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74 ngx_pop3_passwd
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75 } ngx_po3_state_e;
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76
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77
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78 typedef struct {
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79 ngx_peer_connection_t upstream;
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80 ngx_buf_t *buffer;
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81 } ngx_imap_proxy_ctx_t;
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82
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83
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84 typedef struct {
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85 uint32_t signature; /* "IMAP" */
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86
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87 ngx_connection_t *connection;
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88
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88
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89 ngx_str_t out;
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90 ngx_buf_t *buffer;
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91
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92 void **ctx;
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93 void **main_conf;
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94 void **srv_conf;
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95
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96 ngx_imap_proxy_ctx_t *proxy;
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97
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98 ngx_uint_t imap_state;
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99
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88
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100 unsigned blocked:1;
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101 unsigned quit:1;
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76
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102 unsigned protocol:1;
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103 unsigned quoted:1;
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104
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105 ngx_str_t login;
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106 ngx_str_t passwd;
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107
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108 ngx_str_t tag;
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88
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109 ngx_str_t tagged_line;
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76
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110
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111 ngx_uint_t command;
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112 ngx_array_t args;
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113
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114 ngx_uint_t login_attempt;
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115
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116 /* used to parse IMAP/POP3 command */
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117
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118 ngx_uint_t state;
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119 u_char *cmd_start;
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120 u_char *arg_start;
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121 u_char *arg_end;
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122 ngx_uint_t literal_len;
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123 } ngx_imap_session_t;
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124
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125
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126 #define NGX_POP3_USER 1
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127 #define NGX_POP3_PASS 2
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128 #define NGX_POP3_CAPA 3
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129 #define NGX_POP3_QUIT 4
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130 #define NGX_POP3_NOOP 5
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131 #define NGX_POP3_APOP 6
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132 #define NGX_POP3_STAT 7
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133 #define NGX_POP3_LIST 8
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134 #define NGX_POP3_RETR 9
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135 #define NGX_POP3_DELE 10
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136 #define NGX_POP3_RSET 11
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137 #define NGX_POP3_TOP 12
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138 #define NGX_POP3_UIDL 13
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139
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140
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141 #define NGX_IMAP_LOGIN 1
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142 #define NGX_IMAP_LOGOUT 2
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143 #define NGX_IMAP_CAPABILITY 3
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144 #define NGX_IMAP_NOOP 4
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145
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146 #define NGX_IMAP_NEXT 5
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147
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148
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149 #define NGX_IMAP_PARSE_INVALID_COMMAND 20
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150
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151
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152 #define NGX_IMAP_PROXY_INVALID 10
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153 #define NGX_IMAP_PROXY_ERROR 11
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154
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155
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156 #define NGX_IMAP_MODULE 0x50414D49 /* "IMAP" */
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157
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158 #define NGX_IMAP_MAIN_CONF 0x02000000
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159 #define NGX_IMAP_SRV_CONF 0x04000000
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160
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161
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162 #define NGX_IMAP_MAIN_CONF_OFFSET offsetof(ngx_imap_conf_ctx_t, main_conf)
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163 #define NGX_IMAP_SRV_CONF_OFFSET offsetof(ngx_imap_conf_ctx_t, srv_conf)
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164
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165
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166 #define ngx_imap_get_module_ctx(s, module) (s)->ctx[module.ctx_index]
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167 #define ngx_imap_set_ctx(s, c, module) s->ctx[module.ctx_index] = c;
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168 #define ngx_imap_delete_ctx(s, module) s->ctx[module.ctx_index] = NULL;
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169
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170
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171 #define ngx_imap_get_module_main_conf(s, module) \
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172 (s)->main_conf[module.ctx_index]
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173 #define ngx_imap_get_module_srv_conf(s, module) (s)->srv_conf[module.ctx_index]
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174
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175
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176 void ngx_imap_init_connection(ngx_connection_t *c);
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88
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177 void ngx_imap_send(ngx_event_t *wev);
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178 void ngx_imap_auth_state(ngx_event_t *rev);
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179 void ngx_pop3_auth_state(ngx_event_t *rev);
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180 void ngx_imap_close_connection(ngx_connection_t *c);
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181 void ngx_imap_session_internal_server_error(ngx_imap_session_t *s);
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182
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183 ngx_int_t ngx_imap_parse_command(ngx_imap_session_t *s);
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184 ngx_int_t ngx_pop3_parse_command(ngx_imap_session_t *s);
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185
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186
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187 /* STUB */
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188 void ngx_imap_proxy_init(ngx_imap_session_t *s, ngx_peers_t *peers);
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189 void ngx_imap_auth_http_init(ngx_imap_session_t *s);
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190 /**/
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191
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192
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193 extern ngx_uint_t ngx_imap_max_module;
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194 extern ngx_module_t ngx_imap_core_module;
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195
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196
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197 #endif /* _NGX_IMAP_H_INCLUDED_ */
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