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 #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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96
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13 static void ngx_imap_init_session(ngx_connection_t *c);
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90
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14 static void ngx_imap_init_protocol(ngx_event_t *rev);
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76
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15 static ngx_int_t ngx_imap_read_command(ngx_imap_session_t *s);
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90
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16 static u_char *ngx_imap_log_error(ngx_log_t *log, u_char *buf, size_t len);
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76
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17
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88
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18 #if (NGX_IMAP_SSL)
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132
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19 static void ngx_imap_ssl_init_connection(ngx_ssl_t *ssl, ngx_connection_t *c);
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96
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20 static void ngx_imap_ssl_handshake_handler(ngx_connection_t *c);
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88
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21 #endif
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22
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76
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23
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24 static ngx_str_t greetings[] = {
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25 ngx_string("+OK POP3 ready" CRLF),
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78
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26 ngx_string("* OK IMAP4 ready" CRLF)
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76
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27 };
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28
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29 static ngx_str_t internal_server_errors[] = {
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30 ngx_string("-ERR internal server error" CRLF),
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31 ngx_string("* BAD internal server error" CRLF),
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32 };
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33
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34 static u_char pop3_ok[] = "+OK" CRLF;
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35 static u_char pop3_invalid_command[] = "-ERR invalid command" CRLF;
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36
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92
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37 static u_char imap_star[] = "* ";
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78
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38 static u_char imap_ok[] = "OK completed" CRLF;
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76
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39 static u_char imap_next[] = "+ OK" CRLF;
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40 static u_char imap_bye[] = "* BYE" CRLF;
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41 static u_char imap_invalid_command[] = "BAD invalid command" CRLF;
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42
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43
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44 void
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45 ngx_imap_init_connection(ngx_connection_t *c)
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46 {
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132
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47 ngx_imap_log_ctx_t *lctx;
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92
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48 #if (NGX_IMAP_SSL)
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132
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49 ngx_imap_conf_ctx_t *ctx;
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50 ngx_imap_ssl_conf_t *sslcf;
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92
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51 #endif
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90
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52
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96
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53 ngx_log_error(NGX_LOG_INFO, c->log, 0, "*%ui client %V connected to %V",
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54 c->number, &c->addr_text, &c->listening->addr_text);
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90
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55
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92
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56 lctx = ngx_palloc(c->pool, sizeof(ngx_imap_log_ctx_t));
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57 if (lctx == NULL) {
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90
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58 ngx_imap_close_connection(c);
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59 return;
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126
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60 }
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90
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61
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92
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62 lctx->client = &c->addr_text;
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63 lctx->session = NULL;
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90
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64
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65 c->log->connection = c->number;
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66 c->log->handler = ngx_imap_log_error;
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92
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67 c->log->data = lctx;
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90
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68 c->log->action = "sending client greeting line";
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69
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70 c->log_error = NGX_ERROR_INFO;
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71
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92
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72 #if (NGX_IMAP_SSL)
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73
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74 ctx = c->ctx;
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75 sslcf = ngx_imap_get_module_srv_conf(ctx, ngx_imap_ssl_module);
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76
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77 if (sslcf->enable) {
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132
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78 ngx_imap_ssl_init_connection(&sslcf->ssl, c);
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96
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79 return;
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92
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80 }
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81
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82 #endif
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83
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96
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84 ngx_imap_init_session(c);
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90
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85 }
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86
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87
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96
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88 #if (NGX_IMAP_SSL)
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89
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90
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90 static void
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132
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91 ngx_imap_starttls_handler(ngx_event_t *rev)
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92 {
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93 ngx_connection_t *c;
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94 ngx_imap_session_t *s;
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95 ngx_imap_ssl_conf_t *sslcf;
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96
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97 c = rev->data;
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98 s = c->data;
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99
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100 c->log->action = "in starttls state";
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101
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102 sslcf = ngx_imap_get_module_srv_conf(s, ngx_imap_ssl_module);
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103
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104 ngx_imap_ssl_init_connection(&sslcf->ssl, c);
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105 }
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106
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107
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108 static void
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109 ngx_imap_ssl_init_connection(ngx_ssl_t *ssl, ngx_connection_t *c)
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110 {
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111 ngx_imap_conf_ctx_t *ctx;
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112 ngx_imap_core_srv_conf_t *cscf;
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113
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114 if (ngx_ssl_create_connection(ssl, c, 0) == NGX_ERROR) {
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115 ngx_imap_close_connection(c);
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116 return;
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117 }
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118
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119 if (ngx_ssl_handshake(c) == NGX_AGAIN) {
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120
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121 ctx = c->ctx;
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122 cscf = ngx_imap_get_module_srv_conf(ctx, ngx_imap_core_module);
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123
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124 ngx_add_timer(c->read, cscf->timeout);
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125
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126 c->ssl->handler = ngx_imap_ssl_handshake_handler;
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127
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128 return;
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129 }
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130
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131 ngx_imap_ssl_handshake_handler(c);
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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_ssl_handshake_handler(ngx_connection_t *c)
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126
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137 {
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96
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138 if (c->ssl->handshaked) {
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132
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139
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140 if (c->data) {
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141 c->read->handler = ngx_imap_init_protocol;
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142 c->write->handler = ngx_imap_send;
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143
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144 ngx_imap_init_protocol(c->read);
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145
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146 return;
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147 }
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148
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96
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149 ngx_imap_init_session(c);
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150 return;
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151 }
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152
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153 ngx_imap_close_connection(c);
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154 }
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155
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156 #endif
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157
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158
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159 static void
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160 ngx_imap_init_session(ngx_connection_t *c)
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90
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161 {
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88
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162 ngx_imap_session_t *s;
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90
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163 ngx_imap_log_ctx_t *lctx;
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76
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164 ngx_imap_conf_ctx_t *ctx;
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90
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165 ngx_imap_core_srv_conf_t *cscf;
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166
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96
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167 c->read->handler = ngx_imap_init_protocol;
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168 c->write->handler = ngx_imap_send;
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88
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169
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170 s = ngx_pcalloc(c->pool, sizeof(ngx_imap_session_t));
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171 if (s == NULL) {
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172 ngx_imap_close_connection(c);
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173 return;
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174 }
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175
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96
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176 ctx = c->ctx;
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177 cscf = ngx_imap_get_module_srv_conf(ctx, ngx_imap_core_module);
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178
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88
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179 c->data = s;
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180 s->connection = c;
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181
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182 s->protocol = cscf->protocol;
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183
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184 s->ctx = ngx_pcalloc(c->pool, sizeof(void *) * ngx_imap_max_module);
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185 if (s->ctx == NULL) {
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186 ngx_imap_session_internal_server_error(s);
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187 return;
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188 }
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189
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190 s->main_conf = ctx->main_conf;
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191 s->srv_conf = ctx->srv_conf;
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192
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193 s->out = greetings[s->protocol];
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194
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90
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195 lctx = c->log->data;
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196 lctx->session = s;
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197
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96
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198 ngx_add_timer(c->read, cscf->timeout);
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76
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199
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96
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200 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
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201 ngx_imap_close_connection(c);
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202 }
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88
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203
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204 ngx_imap_send(c->write);
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205 }
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206
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207
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208 void
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209 ngx_imap_send(ngx_event_t *wev)
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210 {
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90
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211 ngx_int_t n;
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212 ngx_connection_t *c;
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213 ngx_imap_session_t *s;
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214 ngx_imap_core_srv_conf_t *cscf;
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88
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215
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216 c = wev->data;
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217 s = c->data;
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218
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219 if (wev->timedout) {
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220 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
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221 c->timedout = 1;
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222 ngx_imap_close_connection(c);
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223 return;
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224 }
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225
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226 if (s->out.len == 0) {
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227 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
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228 ngx_imap_close_connection(c);
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229 }
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230
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231 return;
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232 }
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233
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234 n = c->send(c, s->out.data, s->out.len);
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235
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236 if (n > 0) {
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237 s->out.len -= n;
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238
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90
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239 if (wev->timer_set) {
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240 ngx_del_timer(wev);
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241 }
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242
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88
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243 if (s->quit) {
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244 ngx_imap_close_connection(c);
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245 return;
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246 }
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247
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248 if (s->blocked) {
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249 c->read->handler(c->read);
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250 }
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251
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252 return;
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253 }
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254
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255 if (n == NGX_ERROR) {
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256 ngx_imap_close_connection(c);
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257 return;
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258 }
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259
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260 /* n == NGX_AGAIN */
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261
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90
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262 cscf = ngx_imap_get_module_srv_conf(s, ngx_imap_core_module);
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263
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264 ngx_add_timer(c->write, cscf->timeout);
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265
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88
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266 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
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267 ngx_imap_close_connection(c);
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268 return;
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269 }
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76
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270 }
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271
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272
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273 static void
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90
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274 ngx_imap_init_protocol(ngx_event_t *rev)
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76
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275 {
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276 size_t size;
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277 ngx_connection_t *c;
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278 ngx_imap_session_t *s;
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279 ngx_imap_core_srv_conf_t *cscf;
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280
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281 c = rev->data;
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282
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90
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283 c->log->action = "in auth state";
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284
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76
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285 if (rev->timedout) {
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286 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
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126
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287 c->timedout = 1;
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288 ngx_imap_close_connection(c);
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289 return;
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290 }
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291
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88
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292 s = c->data;
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76
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293
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88
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294 if (s->protocol == NGX_IMAP_POP3_PROTOCOL) {
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76
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295 size = 128;
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296 s->imap_state = ngx_pop3_start;
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297 c->read->handler = ngx_pop3_auth_state;
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298
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299 } else {
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88
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300 cscf = ngx_imap_get_module_srv_conf(s, ngx_imap_core_module);
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76
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301 size = cscf->imap_client_buffer_size;
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302 s->imap_state = ngx_imap_start;
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303 c->read->handler = ngx_imap_auth_state;
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304 }
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305
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306 if (s->buffer == NULL) {
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132
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307 if (ngx_array_init(&s->args, c->pool, 2, sizeof(ngx_str_t))
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308 == NGX_ERROR)
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309 {
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310 ngx_imap_session_internal_server_error(s);
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311 return;
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312 }
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313
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314 s->buffer = ngx_create_temp_buf(c->pool, size);
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315 if (s->buffer == NULL) {
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316 ngx_imap_session_internal_server_error(s);
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317 return;
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318 }
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76
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319 }
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320
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321 c->read->handler(rev);
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322 }
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323
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324
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325 void
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326 ngx_imap_auth_state(ngx_event_t *rev)
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327 {
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92
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328 u_char *text, *last, *p, *dst, *src, *end;
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88
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329 ssize_t text_len, last_len;
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76
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330 ngx_str_t *arg;
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331 ngx_int_t rc;
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92
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332 ngx_uint_t tag, i;
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76
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333 ngx_connection_t *c;
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334 ngx_imap_session_t *s;
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335 ngx_imap_core_srv_conf_t *cscf;
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132
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336 #if (NGX_IMAP_SSL)
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337 ngx_imap_ssl_conf_t *sslcf;
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338 #endif
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76
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339
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340 c = rev->data;
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341 s = c->data;
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342
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343 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, c->log, 0, "imap auth state");
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344
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345 if (rev->timedout) {
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346 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
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126
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347 c->timedout = 1;
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76
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348 ngx_imap_close_connection(c);
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349 return;
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350 }
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351
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88
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352 if (s->out.len) {
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353 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, c->log, 0, "imap send handler busy");
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354 s->blocked = 1;
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355 return;
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356 }
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357
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358 s->blocked = 0;
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359
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76
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360 rc = ngx_imap_read_command(s);
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361
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362 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, c->log, 0, "imap auth: %i", rc);
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363
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364 if (rc == NGX_AGAIN || rc == NGX_ERROR) {
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365 return;
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366 }
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367
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368 tag = 1;
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369
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370 text = NULL;
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371 text_len = 0;
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372
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373 last = imap_ok;
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374 last_len = sizeof(imap_ok) - 1;
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375
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376 if (rc == NGX_OK) {
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377
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378 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, c->log, 0, "imap auth command: %i",
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379 s->command);
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380
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92
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381 if (s->backslash) {
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382
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383 arg = s->args.elts;
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384
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385 for (i = 0; i < s->args.nelts; i++) {
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386 dst = arg[i].data;
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387 end = dst + arg[i].len;
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388
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389 for (src = dst; src < end; dst++) {
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390 *dst = *src;
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391 if (*src++ == '\\') {
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392 *dst = *src++;
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393 }
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394 }
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395
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396 arg[i].len = dst - arg[i].data;
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397 }
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398
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399 s->backslash = 0;
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400 }
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401
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76
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402 switch (s->command) {
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403
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404 case NGX_IMAP_LOGIN:
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132
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405
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406 #if (NGX_IMAP_SSL)
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407
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408 if (c->ssl == NULL) {
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409 sslcf = ngx_imap_get_module_srv_conf(s, ngx_imap_ssl_module);
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410
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411 if (sslcf->starttls == NGX_IMAP_STARTTLS_ONLY) {
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412 rc = NGX_IMAP_PARSE_INVALID_COMMAND;
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413 break;
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414 }
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415 }
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416 #endif
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417
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118
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418 arg = s->args.elts;
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76
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419
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118
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420 if (s->args.nelts == 2 && arg[0].len) {
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76
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421
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422 s->login.len = arg[0].len;
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423 s->login.data = ngx_palloc(c->pool, s->login.len);
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424 if (s->login.data == NULL) {
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425 ngx_imap_session_internal_server_error(s);
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426 return;
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427 }
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428
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429 ngx_memcpy(s->login.data, arg[0].data, s->login.len);
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430
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431 s->passwd.len = arg[1].len;
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432 s->passwd.data = ngx_palloc(c->pool, s->passwd.len);
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433 if (s->passwd.data == NULL) {
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434 ngx_imap_session_internal_server_error(s);
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435 return;
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436 }
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437
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438 ngx_memcpy(s->passwd.data, arg[1].data, s->passwd.len);
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439
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96
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440 #if (NGX_DEBUG_IMAP_PASSWD)
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76
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441 ngx_log_debug2(NGX_LOG_DEBUG_IMAP, c->log, 0,
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442 "imap login:\"%V\" passwd:\"%V\"",
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443 &s->login, &s->passwd);
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96
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444 #else
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445 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, c->log, 0,
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446 "imap login:\"%V\"", &s->login);
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447 #endif
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76
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448
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449 s->args.nelts = 0;
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450 s->buffer->pos = s->buffer->start;
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451 s->buffer->last = s->buffer->start;
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452
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453 if (rev->timer_set) {
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454 ngx_del_timer(rev);
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455 }
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456
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457 s->login_attempt++;
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458
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459 ngx_imap_auth_http_init(s);
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460
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461 return;
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462
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463 } else {
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464 rc = NGX_IMAP_PARSE_INVALID_COMMAND;
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465 }
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466
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467 break;
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468
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469 case NGX_IMAP_CAPABILITY:
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470 cscf = ngx_imap_get_module_srv_conf(s, ngx_imap_core_module);
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132
|
471
|
|
472 #if (NGX_IMAP_SSL)
|
|
473
|
|
474 if (c->ssl == NULL) {
|
|
475 sslcf = ngx_imap_get_module_srv_conf(s, ngx_imap_ssl_module);
|
|
476
|
|
477 if (sslcf->starttls == NGX_IMAP_STARTTLS_ON) {
|
|
478 text_len = cscf->imap_starttls_capability.len;
|
|
479 text = cscf->imap_starttls_capability.data;
|
|
480 break;
|
|
481 }
|
|
482
|
|
483 if (sslcf->starttls == NGX_IMAP_STARTTLS_ONLY) {
|
|
484 text_len = cscf->imap_starttls_only_capability.len;
|
|
485 text = cscf->imap_starttls_only_capability.data;
|
|
486 break;
|
|
487 }
|
|
488 }
|
|
489 #endif
|
|
490
|
|
491 text_len = cscf->imap_capability.len;
|
|
492 text = cscf->imap_capability.data;
|
76
|
493 break;
|
|
494
|
|
495 case NGX_IMAP_LOGOUT:
|
88
|
496 s->quit = 1;
|
76
|
497 text = imap_bye;
|
|
498 text_len = sizeof(imap_bye) - 1;
|
|
499 break;
|
|
500
|
|
501 case NGX_IMAP_NOOP:
|
|
502 break;
|
|
503
|
132
|
504 #if (NGX_IMAP_SSL)
|
|
505
|
|
506 case NGX_IMAP_STARTTLS:
|
|
507 if (c->ssl == NULL) {
|
|
508 sslcf = ngx_imap_get_module_srv_conf(s, ngx_imap_ssl_module);
|
|
509 if (sslcf->starttls) {
|
|
510 c->read->handler = ngx_imap_starttls_handler;
|
|
511 break;
|
|
512 }
|
|
513 }
|
|
514
|
|
515 rc = NGX_IMAP_PARSE_INVALID_COMMAND;
|
|
516 break;
|
|
517 #endif
|
|
518
|
76
|
519 default:
|
|
520 rc = NGX_IMAP_PARSE_INVALID_COMMAND;
|
|
521 break;
|
|
522 }
|
|
523
|
|
524 } else if (rc == NGX_IMAP_NEXT) {
|
|
525 last = imap_next;
|
|
526 last_len = sizeof(imap_next) - 1;
|
|
527 tag = 0;
|
|
528 }
|
|
529
|
|
530 if (rc == NGX_IMAP_PARSE_INVALID_COMMAND) {
|
|
531 last = imap_invalid_command;
|
|
532 last_len = sizeof(imap_invalid_command) - 1;
|
|
533 }
|
|
534
|
|
535 if (tag) {
|
92
|
536 if (s->tag.len == 0) {
|
|
537 s->tag.len = sizeof(imap_star) - 1;
|
|
538 s->tag.data = (u_char *) imap_star;
|
|
539 }
|
|
540
|
88
|
541 if (s->tagged_line.len < s->tag.len + text_len + last_len) {
|
|
542 s->tagged_line.len = s->tag.len + text_len + last_len;
|
|
543 s->tagged_line.data = ngx_palloc(c->pool, s->tagged_line.len);
|
|
544 if (s->tagged_line.data == NULL) {
|
76
|
545 ngx_imap_close_connection(c);
|
|
546 return;
|
|
547 }
|
|
548 }
|
|
549
|
88
|
550 s->out.data = s->tagged_line.data;
|
|
551 s->out.len = s->tag.len + text_len + last_len;
|
|
552
|
|
553 p = s->out.data;
|
76
|
554
|
|
555 if (text) {
|
|
556 p = ngx_cpymem(p, text, text_len);
|
|
557 }
|
|
558 p = ngx_cpymem(p, s->tag.data, s->tag.len);
|
|
559 ngx_memcpy(p, last, last_len);
|
|
560
|
|
561
|
|
562 } else {
|
88
|
563 s->out.data = last;
|
|
564 s->out.len = last_len;
|
76
|
565 }
|
|
566
|
88
|
567 if (rc != NGX_IMAP_NEXT) {
|
|
568 s->args.nelts = 0;
|
|
569 s->buffer->pos = s->buffer->start;
|
|
570 s->buffer->last = s->buffer->start;
|
|
571 s->tag.len = 0;
|
76
|
572 }
|
|
573
|
88
|
574 ngx_imap_send(c->write);
|
76
|
575 }
|
|
576
|
|
577
|
|
578 void
|
|
579 ngx_pop3_auth_state(ngx_event_t *rev)
|
|
580 {
|
|
581 u_char *text;
|
|
582 ssize_t size;
|
|
583 ngx_int_t rc;
|
|
584 ngx_str_t *arg;
|
|
585 ngx_connection_t *c;
|
|
586 ngx_imap_session_t *s;
|
|
587 ngx_imap_core_srv_conf_t *cscf;
|
132
|
588 #if (NGX_IMAP_SSL)
|
|
589 ngx_imap_ssl_conf_t *sslcf;
|
|
590 #endif
|
76
|
591
|
|
592 c = rev->data;
|
|
593 s = c->data;
|
|
594
|
|
595 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, c->log, 0, "pop3 auth state");
|
|
596
|
|
597 if (rev->timedout) {
|
|
598 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
|
126
|
599 c->timedout = 1;
|
76
|
600 ngx_imap_close_connection(c);
|
|
601 return;
|
|
602 }
|
|
603
|
88
|
604 if (s->out.len) {
|
|
605 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, c->log, 0, "imap send handler busy");
|
|
606 s->blocked = 1;
|
|
607 return;
|
|
608 }
|
|
609
|
|
610 s->blocked = 0;
|
|
611
|
76
|
612 rc = ngx_imap_read_command(s);
|
|
613
|
|
614 if (rc == NGX_AGAIN || rc == NGX_ERROR) {
|
|
615 return;
|
|
616 }
|
|
617
|
|
618 text = pop3_ok;
|
|
619 size = sizeof(pop3_ok) - 1;
|
|
620
|
|
621 if (rc == NGX_OK) {
|
|
622 switch (s->imap_state) {
|
|
623
|
|
624 case ngx_pop3_start:
|
|
625
|
|
626 switch (s->command) {
|
|
627
|
|
628 case NGX_POP3_USER:
|
|
629 if (s->args.nelts == 1) {
|
|
630 s->imap_state = ngx_pop3_user;
|
|
631
|
|
632 arg = s->args.elts;
|
|
633 s->login.len = arg[0].len;
|
|
634 s->login.data = ngx_palloc(c->pool, s->login.len);
|
|
635 if (s->login.data == NULL) {
|
|
636 ngx_imap_session_internal_server_error(s);
|
|
637 return;
|
|
638 }
|
|
639
|
|
640 ngx_memcpy(s->login.data, arg[0].data, s->login.len);
|
|
641
|
|
642 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, c->log, 0,
|
|
643 "pop3 login: \"%V\"", &s->login);
|
|
644
|
|
645 } else {
|
|
646 rc = NGX_IMAP_PARSE_INVALID_COMMAND;
|
|
647 }
|
|
648
|
|
649 break;
|
|
650
|
|
651 case NGX_POP3_CAPA:
|
|
652 cscf = ngx_imap_get_module_srv_conf(s, ngx_imap_core_module);
|
132
|
653
|
|
654 #if (NGX_IMAP_SSL)
|
|
655
|
|
656 if (c->ssl == NULL) {
|
|
657 sslcf = ngx_imap_get_module_srv_conf(s,
|
|
658 ngx_imap_ssl_module);
|
|
659 if (sslcf->starttls) {
|
|
660 size = cscf->pop3_starttls_capability.len;
|
|
661 text = cscf->pop3_starttls_capability.data;
|
|
662 break;
|
|
663 }
|
|
664 }
|
|
665 #endif
|
|
666
|
|
667 size = cscf->pop3_capability.len;
|
|
668 text = cscf->pop3_capability.data;
|
76
|
669 break;
|
|
670
|
|
671 case NGX_POP3_QUIT:
|
88
|
672 s->quit = 1;
|
76
|
673 break;
|
|
674
|
|
675 case NGX_POP3_NOOP:
|
|
676 break;
|
|
677
|
132
|
678 #if (NGX_IMAP_SSL)
|
|
679
|
|
680 case NGX_POP3_STLS:
|
|
681 if (c->ssl == NULL) {
|
|
682 sslcf = ngx_imap_get_module_srv_conf(s,
|
|
683 ngx_imap_ssl_module);
|
|
684 if (sslcf->starttls) {
|
|
685 c->read->handler = ngx_imap_starttls_handler;
|
|
686 break;
|
|
687 }
|
|
688 }
|
|
689
|
|
690 rc = NGX_IMAP_PARSE_INVALID_COMMAND;
|
|
691 break;
|
|
692 #endif
|
|
693
|
76
|
694 default:
|
|
695 s->imap_state = ngx_pop3_start;
|
|
696 rc = NGX_IMAP_PARSE_INVALID_COMMAND;
|
|
697 break;
|
|
698 }
|
|
699
|
|
700 break;
|
|
701
|
|
702 case ngx_pop3_user:
|
|
703
|
|
704 switch (s->command) {
|
|
705
|
|
706 case NGX_POP3_PASS:
|
|
707 if (s->args.nelts == 1) {
|
|
708 /* STUB */ s->imap_state = ngx_pop3_start;
|
|
709
|
|
710 arg = s->args.elts;
|
|
711 s->passwd.len = arg[0].len;
|
|
712 s->passwd.data = ngx_palloc(c->pool, s->passwd.len);
|
|
713 if (s->passwd.data == NULL) {
|
|
714 ngx_imap_session_internal_server_error(s);
|
|
715 return;
|
|
716 }
|
|
717
|
|
718 ngx_memcpy(s->passwd.data, arg[0].data, s->passwd.len);
|
|
719
|
96
|
720 #if (NGX_DEBUG_IMAP_PASSWD)
|
76
|
721 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, c->log, 0,
|
|
722 "pop3 passwd: \"%V\"", &s->passwd);
|
96
|
723 #endif
|
76
|
724
|
|
725 s->args.nelts = 0;
|
|
726 s->buffer->pos = s->buffer->start;
|
|
727 s->buffer->last = s->buffer->start;
|
|
728
|
|
729 if (rev->timer_set) {
|
|
730 ngx_del_timer(rev);
|
|
731 }
|
|
732
|
|
733 ngx_imap_auth_http_init(s);
|
|
734
|
|
735 return;
|
|
736
|
|
737 } else {
|
|
738 rc = NGX_IMAP_PARSE_INVALID_COMMAND;
|
|
739 }
|
|
740
|
|
741 break;
|
|
742
|
|
743 case NGX_POP3_CAPA:
|
|
744 cscf = ngx_imap_get_module_srv_conf(s, ngx_imap_core_module);
|
132
|
745 size = cscf->pop3_capability.len;
|
|
746 text = cscf->pop3_capability.data;
|
76
|
747 break;
|
|
748
|
|
749 case NGX_POP3_QUIT:
|
88
|
750 s->quit = 1;
|
76
|
751 break;
|
|
752
|
|
753 case NGX_POP3_NOOP:
|
|
754 break;
|
|
755
|
|
756 default:
|
|
757 s->imap_state = ngx_pop3_start;
|
|
758 rc = NGX_IMAP_PARSE_INVALID_COMMAND;
|
|
759 break;
|
|
760 }
|
|
761
|
|
762 break;
|
|
763
|
|
764 /* suppress warinings */
|
|
765 case ngx_pop3_passwd:
|
|
766 break;
|
|
767 }
|
|
768 }
|
|
769
|
|
770 if (rc == NGX_IMAP_PARSE_INVALID_COMMAND) {
|
|
771 text = pop3_invalid_command;
|
|
772 size = sizeof(pop3_invalid_command) - 1;
|
|
773 }
|
|
774
|
|
775 s->args.nelts = 0;
|
|
776 s->buffer->pos = s->buffer->start;
|
|
777 s->buffer->last = s->buffer->start;
|
88
|
778
|
|
779 s->out.data = text;
|
|
780 s->out.len = size;
|
|
781
|
|
782 ngx_imap_send(c->write);
|
76
|
783 }
|
|
784
|
|
785
|
|
786 static ngx_int_t
|
|
787 ngx_imap_read_command(ngx_imap_session_t *s)
|
|
788 {
|
|
789 ssize_t n;
|
|
790 ngx_int_t rc;
|
|
791
|
88
|
792 n = s->connection->recv(s->connection, s->buffer->last,
|
|
793 s->buffer->end - s->buffer->last);
|
76
|
794
|
|
795 if (n == NGX_ERROR || n == 0) {
|
|
796 ngx_imap_close_connection(s->connection);
|
|
797 return NGX_ERROR;
|
|
798 }
|
|
799
|
|
800 if (n > 0) {
|
|
801 s->buffer->last += n;
|
|
802 }
|
|
803
|
|
804 if (n == NGX_AGAIN) {
|
|
805 if (ngx_handle_read_event(s->connection->read, 0) == NGX_ERROR) {
|
|
806 ngx_imap_session_internal_server_error(s);
|
|
807 return NGX_ERROR;
|
|
808 }
|
|
809
|
|
810 return NGX_AGAIN;
|
|
811 }
|
|
812
|
|
813 if (s->protocol == NGX_IMAP_POP3_PROTOCOL) {
|
|
814 rc = ngx_pop3_parse_command(s);
|
|
815 } else {
|
|
816 rc = ngx_imap_parse_command(s);
|
|
817 }
|
|
818
|
|
819 if (rc == NGX_AGAIN
|
|
820 || rc == NGX_IMAP_NEXT
|
|
821 || rc == NGX_IMAP_PARSE_INVALID_COMMAND)
|
|
822 {
|
|
823 return rc;
|
|
824 }
|
|
825
|
|
826 if (rc == NGX_ERROR) {
|
|
827 ngx_imap_close_connection(s->connection);
|
|
828 return NGX_ERROR;
|
|
829 }
|
|
830
|
|
831 return NGX_OK;
|
|
832 }
|
|
833
|
|
834
|
|
835 void
|
|
836 ngx_imap_session_internal_server_error(ngx_imap_session_t *s)
|
|
837 {
|
88
|
838 s->out = internal_server_errors[s->protocol];
|
|
839 s->quit = 1;
|
76
|
840
|
88
|
841 ngx_imap_send(s->connection->write);
|
76
|
842 }
|
|
843
|
|
844
|
|
845 void
|
|
846 ngx_imap_close_connection(ngx_connection_t *c)
|
|
847 {
|
|
848 ngx_pool_t *pool;
|
|
849
|
|
850 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, c->log, 0,
|
|
851 "close imap connection: %d", c->fd);
|
|
852
|
88
|
853 #if (NGX_IMAP_SSL)
|
|
854
|
|
855 if (c->ssl) {
|
|
856 if (ngx_ssl_shutdown(c) == NGX_AGAIN) {
|
126
|
857 c->ssl->handler = ngx_imap_close_connection;
|
88
|
858 return;
|
|
859 }
|
|
860 }
|
|
861
|
|
862 #endif
|
|
863
|
132
|
864 c->destroyed = 1;
|
92
|
865
|
76
|
866 pool = c->pool;
|
|
867
|
|
868 ngx_close_connection(c);
|
|
869
|
|
870 ngx_destroy_pool(pool);
|
|
871 }
|
88
|
872
|
|
873
|
90
|
874 static u_char *
|
|
875 ngx_imap_log_error(ngx_log_t *log, u_char *buf, size_t len)
|
|
876 {
|
116
|
877 u_char *p;
|
|
878 ngx_imap_session_t *s;
|
|
879 ngx_imap_log_ctx_t *ctx;
|
90
|
880
|
|
881 if (log->action) {
|
|
882 p = ngx_snprintf(buf, len, " while %s", log->action);
|
|
883 len -= p - buf;
|
|
884 buf = p;
|
|
885 }
|
126
|
886
|
90
|
887 ctx = log->data;
|
|
888
|
|
889 p = ngx_snprintf(buf, len, ", client: %V", ctx->client);
|
|
890 len -= p - buf;
|
|
891 buf = p;
|
|
892
|
|
893 s = ctx->session;
|
|
894
|
|
895 if (s == NULL) {
|
|
896 return p;
|
|
897 }
|
|
898
|
|
899 p = ngx_snprintf(buf, len, ", server: %V",
|
|
900 &s->connection->listening->addr_text);
|
|
901 len -= p - buf;
|
|
902 buf = p;
|
|
903
|
|
904 if (s->login.len == 0) {
|
|
905 return p;
|
|
906 }
|
|
907
|
|
908 p = ngx_snprintf(buf, len, ", login: \"%V\"", &s->login);
|
|
909 len -= p - buf;
|
|
910 buf = p;
|
|
911
|
|
912 if (s->proxy == NULL) {
|
|
913 return p;
|
|
914 }
|
|
915
|
|
916 p = ngx_snprintf(buf, len, ", upstream: %V",
|
|
917 &s->proxy->upstream.peers->peer[0].name);
|
|
918
|
|
919 return p;
|
|
920 }
|