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