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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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16
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17 typedef struct {
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18 void **main_conf;
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19 void **srv_conf;
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20 } ngx_imap_conf_ctx_t;
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21
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22
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23 typedef struct {
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24 ngx_array_t servers; /* ngx_imap_core_srv_conf_t */
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25 } ngx_imap_core_main_conf_t;
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26
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27
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28 #define NGX_IMAP_POP3_PROTOCOL 0
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29 #define NGX_IMAP_IMAP_PROTOCOL 1
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30
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31 typedef struct {
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32 ngx_msec_t timeout;
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33
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34 size_t imap_client_buffer_size;
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35 size_t proxy_buffer_size;
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36
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37 ngx_uint_t protocol;
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38
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39 ngx_buf_t *pop3_capability;
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40 ngx_buf_t *imap_capability;
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41
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42 ngx_array_t pop3_capabilities;
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43 ngx_array_t imap_capabilities;
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44
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45 /* server ctx */
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46 ngx_imap_conf_ctx_t *ctx;
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47 } ngx_imap_core_srv_conf_t;
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48
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49
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50 typedef struct {
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51 void *(*create_main_conf)(ngx_conf_t *cf);
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52 char *(*init_main_conf)(ngx_conf_t *cf, void *conf);
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53
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54 void *(*create_srv_conf)(ngx_conf_t *cf);
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55 char *(*merge_srv_conf)(ngx_conf_t *cf, void *prev, void *conf);
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56 } ngx_imap_module_t;
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57
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58
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59 typedef enum {
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60 ngx_imap_start = 0,
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61 ngx_imap_login,
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62 ngx_imap_user,
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63 ngx_imap_passwd,
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64 } ngx_imap_state_e;
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65
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66
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67 typedef enum {
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68 ngx_pop3_start = 0,
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69 ngx_pop3_user,
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70 ngx_pop3_passwd
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71 } ngx_po3_state_e;
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72
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73
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74 typedef struct {
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75 ngx_peer_connection_t upstream;
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76 ngx_buf_t *buffer;
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77 } ngx_imap_proxy_ctx_t;
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78
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79
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80 typedef struct {
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81 uint32_t signature; /* "IMAP" */
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82
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83 ngx_connection_t *connection;
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84
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85 ngx_buf_t *buffer;
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86 ngx_str_t out;
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87
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88 void **ctx;
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89 void **main_conf;
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90 void **srv_conf;
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91
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92 ngx_imap_proxy_ctx_t *proxy;
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93
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94 ngx_uint_t imap_state;
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95
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96 unsigned protocol:1;
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97 unsigned quoted:1;
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98
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99 ngx_str_t login;
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100 ngx_str_t passwd;
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101
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102 ngx_str_t tag;
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103
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104 ngx_uint_t command;
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105 ngx_array_t args;
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106
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107 ngx_uint_t login_attempt;
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108
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109 /* used to parse IMAP/POP3 command */
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110
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111 ngx_uint_t state;
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112 u_char *cmd_start;
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113 u_char *arg_start;
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114 u_char *arg_end;
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115 ngx_uint_t literal_len;
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116 } ngx_imap_session_t;
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117
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118
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119 #define NGX_POP3_USER 1
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120 #define NGX_POP3_PASS 2
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121 #define NGX_POP3_CAPA 3
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122 #define NGX_POP3_QUIT 4
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123 #define NGX_POP3_NOOP 5
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124 #define NGX_POP3_APOP 6
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125 #define NGX_POP3_STAT 7
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126 #define NGX_POP3_LIST 8
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127 #define NGX_POP3_RETR 9
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128 #define NGX_POP3_DELE 10
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129 #define NGX_POP3_RSET 11
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130 #define NGX_POP3_TOP 12
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131 #define NGX_POP3_UIDL 13
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132
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133
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134 #define NGX_IMAP_LOGIN 1
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135 #define NGX_IMAP_LOGOUT 2
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136 #define NGX_IMAP_CAPABILITY 3
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137 #define NGX_IMAP_NOOP 4
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138
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139 #define NGX_IMAP_NEXT 5
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140
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141
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142 #define NGX_IMAP_PARSE_INVALID_COMMAND 20
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143
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144
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145 #define NGX_IMAP_PROXY_INVALID 10
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146 #define NGX_IMAP_PROXY_ERROR 11
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147
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148
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149 #define NGX_IMAP_MODULE 0x50414D49 /* "IMAP" */
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150
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151 #define NGX_IMAP_MAIN_CONF 0x02000000
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152 #define NGX_IMAP_SRV_CONF 0x04000000
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153
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154
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155 #define NGX_IMAP_MAIN_CONF_OFFSET offsetof(ngx_imap_conf_ctx_t, main_conf)
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156 #define NGX_IMAP_SRV_CONF_OFFSET offsetof(ngx_imap_conf_ctx_t, srv_conf)
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157
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158
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159 #define ngx_imap_get_module_ctx(s, module) (s)->ctx[module.ctx_index]
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160 #define ngx_imap_set_ctx(s, c, module) s->ctx[module.ctx_index] = c;
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161 #define ngx_imap_delete_ctx(s, module) s->ctx[module.ctx_index] = NULL;
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162
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163
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164 #define ngx_imap_get_module_main_conf(s, module) \
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165 (s)->main_conf[module.ctx_index]
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166 #define ngx_imap_get_module_srv_conf(s, module) (s)->srv_conf[module.ctx_index]
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167
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168
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169 void ngx_imap_init_connection(ngx_connection_t *c);
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170 void ngx_imap_auth_state(ngx_event_t *rev);
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171 void ngx_pop3_auth_state(ngx_event_t *rev);
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172 void ngx_imap_close_connection(ngx_connection_t *c);
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173 void ngx_imap_session_internal_server_error(ngx_imap_session_t *s);
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174
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175 ngx_int_t ngx_imap_parse_command(ngx_imap_session_t *s);
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176 ngx_int_t ngx_pop3_parse_command(ngx_imap_session_t *s);
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177
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178
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179 /* STUB */
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180 void ngx_imap_proxy_init(ngx_imap_session_t *s, ngx_peers_t *peers);
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181 void ngx_imap_auth_http_init(ngx_imap_session_t *s);
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182 /**/
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183
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184
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185 extern ngx_uint_t ngx_imap_max_module;
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186 extern ngx_module_t ngx_imap_core_module;
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187
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188
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189 #endif /* _NGX_IMAP_H_INCLUDED_ */
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