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0
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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_http.h>
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11
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12
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13 static void ngx_http_init_request(ngx_event_t *ev);
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14 #if (NGX_HTTP_SSL)
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15 static void ngx_http_ssl_handshake(ngx_event_t *rev);
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16 #endif
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17 static void ngx_http_process_request_line(ngx_event_t *rev);
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18 static void ngx_http_process_request_headers(ngx_event_t *rev);
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19 static ssize_t ngx_http_read_request_header(ngx_http_request_t *r);
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20 static ngx_int_t ngx_http_alloc_large_header_buffer(ngx_http_request_t *r,
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21 ngx_uint_t request_line);
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22 static ngx_int_t ngx_http_process_request_header(ngx_http_request_t *r);
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23
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24 static void ngx_http_set_write_handler(ngx_http_request_t *r);
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25
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26 static void ngx_http_block_read(ngx_event_t *ev);
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27 static void ngx_http_read_discarded_body_event(ngx_event_t *rev);
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28 static ngx_int_t ngx_http_read_discarded_body(ngx_http_request_t *r);
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29
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30 static void ngx_http_set_keepalive(ngx_http_request_t *r);
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31 static void ngx_http_keepalive_handler(ngx_event_t *ev);
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32 static void ngx_http_set_lingering_close(ngx_http_request_t *r);
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33 static void ngx_http_lingering_close_handler(ngx_event_t *ev);
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34
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35 static void ngx_http_client_error(ngx_http_request_t *r,
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36 int client_error, int error);
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37 static size_t ngx_http_log_error(void *data, char *buf, size_t len);
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38
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39
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40 /* NGX_HTTP_PARSE_... errors */
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41
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42 static char *client_header_errors[] = {
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43 "client %s sent invalid method",
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44 "client %s sent invalid request",
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45 "client %s sent too long URI",
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46 "client %s sent invalid method in HTTP/0.9 request",
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47
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48 "client %s sent invalid header, URL: %s",
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49 "client %s sent too long header line, URL: %s",
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50 "client %s sent HTTP/1.1 request without \"Host\" header, URL: %s",
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51 "client %s sent invalid \"Content-Length\" header, URL: %s",
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52 "client %s sent POST method without \"Content-Length\" header, URL: %s",
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53 "client %s sent plain HTTP request to HTTPS port, URL: %s",
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54 "client %s sent invalid \"Host\" header \"%s\", URL: %s"
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55 };
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56
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57
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58 ngx_http_header_t ngx_http_headers_in[] = {
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59 { ngx_string("Host"), offsetof(ngx_http_headers_in_t, host) },
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60 { ngx_string("Connection"), offsetof(ngx_http_headers_in_t, connection) },
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61 { ngx_string("If-Modified-Since"),
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62 offsetof(ngx_http_headers_in_t, if_modified_since) },
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63 { ngx_string("User-Agent"), offsetof(ngx_http_headers_in_t, user_agent) },
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64 { ngx_string("Referer"), offsetof(ngx_http_headers_in_t, referer) },
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65 { ngx_string("Content-Length"),
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66 offsetof(ngx_http_headers_in_t, content_length) },
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67
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68 { ngx_string("Range"), offsetof(ngx_http_headers_in_t, range) },
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69 #if 0
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70 { ngx_string("If-Range"), offsetof(ngx_http_headers_in_t, if_range) },
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71 #endif
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72
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73 #if (NGX_HTTP_GZIP)
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74 { ngx_string("Accept-Encoding"),
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75 offsetof(ngx_http_headers_in_t, accept_encoding) },
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76 { ngx_string("Via"), offsetof(ngx_http_headers_in_t, via) },
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77 #endif
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78
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79 { ngx_string("Authorization"),
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80 offsetof(ngx_http_headers_in_t, authorization) },
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81
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82 { ngx_string("Keep-Alive"), offsetof(ngx_http_headers_in_t, keep_alive) },
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83
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84 #if (NGX_HTTP_PROXY)
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85 { ngx_string("X-Forwarded-For"),
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86 offsetof(ngx_http_headers_in_t, x_forwarded_for) },
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87 #endif
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88
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89 { ngx_null_string, 0 }
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90 };
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91
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92
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93 #if 0
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94 static void ngx_http_dummy(ngx_event_t *wev)
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95 {
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96 return;
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97 }
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98 #endif
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99
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100
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101 void ngx_http_init_connection(ngx_connection_t *c)
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102 {
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103 ngx_event_t *rev;
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104 ngx_http_log_ctx_t *ctx;
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105
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106 if (!(ctx = ngx_pcalloc(c->pool, sizeof(ngx_http_log_ctx_t)))) {
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107 ngx_http_close_connection(c);
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108 return;
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109 }
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110
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111 ctx->connection = c->number;
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112 ctx->client = c->addr_text.data;
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113 ctx->action = "reading client request line";
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114 c->log->data = ctx;
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115 c->log->handler = ngx_http_log_error;
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116 c->log_error = NGX_ERROR_INFO;
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117
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118 rev = c->read;
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119 rev->event_handler = ngx_http_init_request;
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120
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121 /* STUB: epoll edge */ c->write->event_handler = ngx_http_empty_handler;
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122
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123 if (rev->ready) {
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124 /* the deferred accept(), rtsig, aio, iocp */
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125
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126 if (ngx_accept_mutex) {
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127 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
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128 ngx_http_close_connection(c);
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129 return;
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130 }
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131
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132 ngx_post_event(rev);
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133
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134 ngx_mutex_unlock(ngx_posted_events_mutex);
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135 return;
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136 }
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137
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138 #if (NGX_STAT_STUB)
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139 (*ngx_stat_reading)++;
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140 #endif
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141
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142 ngx_http_init_request(rev);
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143 return;
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144 }
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145
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146 ngx_add_timer(rev, c->listening->post_accept_timeout);
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147
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148 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
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149 ngx_http_close_connection(c);
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150 return;
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151 }
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152
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153 #if 0
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154 /* TODO: learn SO_SNDBUF (to use in zerocopy) via kqueue's EV_CLEAR event */
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155
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156 c->write->ready = 0;
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157 c->write->event_handler = ngx_http_dummy;
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158
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159 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
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160 ngx_http_close_connection(c);
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161 return;
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162 }
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163 #endif
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164
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165 #if (NGX_STAT_STUB)
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166 (*ngx_stat_reading)++;
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167 #endif
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168
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169 }
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170
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171
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172 static void ngx_http_init_request(ngx_event_t *rev)
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173 {
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174 ngx_uint_t i;
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175 socklen_t len;
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176 struct sockaddr_in addr_in;
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177 ngx_connection_t *c;
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178 ngx_http_request_t *r;
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179 ngx_http_in_port_t *in_port;
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180 ngx_http_in_addr_t *in_addr;
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181 ngx_http_connection_t *hc;
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182 ngx_http_server_name_t *server_name;
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183 ngx_http_core_srv_conf_t *cscf;
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184 ngx_http_core_loc_conf_t *clcf;
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185 #if (NGX_HTTP_SSL)
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186 ngx_http_ssl_srv_conf_t *sscf;
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187 #endif
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188
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189 c = rev->data;
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190
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191 if (rev->timedout) {
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192 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
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193
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194 #if (NGX_STAT_STUB)
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195 (*ngx_stat_reading)--;
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196 #endif
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197
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198 ngx_http_close_connection(c);
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199 return;
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200 }
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201
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202 hc = c->data;
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203
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204 if (hc) {
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205
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206 #if (NGX_STAT_STUB)
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207 (*ngx_stat_reading)++;
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208 #endif
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209
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210 } else {
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211 if (!(hc = ngx_pcalloc(c->pool, sizeof(ngx_http_connection_t)))) {
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212
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213 #if (NGX_STAT_STUB)
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214 (*ngx_stat_reading)--;
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215 #endif
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216
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217 ngx_http_close_connection(c);
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218 return;
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219 }
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220 }
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221
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222 r = hc->request;
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223
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224 if (r) {
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225 ngx_memzero(r, sizeof(ngx_http_request_t));
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226
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227 r->pipeline = hc->pipeline;
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228
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229 if (hc->nbusy) {
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230 r->header_in = hc->busy[0];
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231 }
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232
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233 } else {
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234 if (!(r = ngx_pcalloc(c->pool, sizeof(ngx_http_request_t)))) {
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235
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236 #if (NGX_STAT_STUB)
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237 (*ngx_stat_reading)--;
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238 #endif
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239
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240 ngx_http_close_connection(c);
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241 return;
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242 }
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243
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244 hc->request = r;
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245 }
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246
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247 #if (NGX_STAT_STUB)
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248 r->stat_reading = 1;
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249 #endif
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250
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251 c->data = r;
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252 r->http_connection = hc;
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253
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254 c->sent = 0;
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255 r->signature = NGX_HTTP_MODULE;
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256
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257 /* find the server configuration for the address:port */
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258
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259 /* AF_INET only */
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260
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261 in_port = c->servers;
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262 in_addr = in_port->addrs.elts;
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263
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264 r->port = in_port->port;
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265 r->port_text = &in_port->port_text;
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266
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267 i = 0;
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268
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269 if (in_port->addrs.nelts > 1) {
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270
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271 /*
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272 * There are several addresses on this port and one of them
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273 * is the "*:port" wildcard so getsockname() is needed to determine
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274 * the server address.
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275 *
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276 * AcceptEx() already gave this address.
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277 */
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278
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279 #if (WIN32)
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280 if (c->local_sockaddr) {
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281 r->in_addr =
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282 ((struct sockaddr_in *) c->local_sockaddr)->sin_addr.s_addr;
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283
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284 } else {
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285 #endif
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286 len = sizeof(struct sockaddr_in);
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287 if (getsockname(c->fd, (struct sockaddr *) &addr_in, &len) == -1) {
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288 ngx_connection_error(c, ngx_socket_errno,
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289 "getsockname() failed");
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290 ngx_http_close_connection(c);
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291 return;
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292 }
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293
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294 r->in_addr = addr_in.sin_addr.s_addr;
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295
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296 #if (WIN32)
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297 }
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298 #endif
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299
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300 /* the last in_port->addrs address is "*" */
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301
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302 for ( /* void */ ; i < in_port->addrs.nelts - 1; i++) {
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303 if (in_addr[i].addr == r->in_addr) {
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304 break;
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305 }
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306 }
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307
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308 } else {
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309 r->in_addr = in_addr[0].addr;
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310 }
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311
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312 r->virtual_names = &in_addr[i].names;
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313
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314 /* the default server configuration for the address:port */
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315 cscf = in_addr[i].core_srv_conf;
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316
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317 r->main_conf = cscf->ctx->main_conf;
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318 r->srv_conf = cscf->ctx->srv_conf;
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319 r->loc_conf = cscf->ctx->loc_conf;
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320
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321 rev->event_handler = ngx_http_process_request_line;
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322
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323 #if (NGX_HTTP_SSL)
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324
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325 sscf = ngx_http_get_module_srv_conf(r, ngx_http_ssl_module);
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326 if (sscf->enable) {
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327
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328 if (c->ssl == NULL) {
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329 if (ngx_ssl_create_session(sscf->ssl_ctx, c, NGX_SSL_BUFFER)
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330 == NGX_ERROR)
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331 {
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332 ngx_http_close_connection(c);
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333 return;
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334 }
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335
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336 /*
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337 * The majority of browsers do not send the "close notify" alert.
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338 * Among them are MSIE, Mozilla, Netscape 4, Konqueror, and Links.
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339 * And what is more MSIE ignores the server's alert.
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340 *
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341 * Opera always sends the alert.
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342 */
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343
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344 c->ssl->no_rcv_shut = 1;
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345 rev->event_handler = ngx_http_ssl_handshake;
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346 }
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347
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348 r->filter_need_in_memory = 1;
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349 }
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350
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351 #endif
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352
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353 server_name = cscf->server_names.elts;
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354 r->server_name = &server_name->name;
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355
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356 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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357 c->log->file = clcf->err_log->file;
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358 if (!(c->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
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359 c->log->log_level = clcf->err_log->log_level;
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360 }
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361
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362 if (c->buffer == NULL) {
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363 c->buffer = ngx_create_temp_buf(c->pool,
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364 cscf->client_header_buffer_size);
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365 if (c->buffer == NULL) {
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366 ngx_http_close_connection(c);
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367 return;
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368 }
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369 }
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370
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371 if (r->header_in == NULL) {
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372 r->header_in = c->buffer;
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373 }
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374
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375 if (!(r->pool = ngx_create_pool(cscf->request_pool_size, c->log))) {
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376 ngx_http_close_connection(c);
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377 return;
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378 }
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379
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380 if (ngx_array_init(&r->cleanup, r->pool, 5, sizeof(ngx_http_cleanup_t))
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381 == NGX_ERROR)
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382 {
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383 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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384 ngx_http_close_connection(c);
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385 return;
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386 }
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387
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388
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389 if (ngx_list_init(&r->headers_out.headers, r->pool, 20,
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390 sizeof(ngx_table_elt_t)) == NGX_ERROR)
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391 {
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392 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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393 ngx_http_close_connection(c);
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394 return;
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395 }
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396
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397
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398 r->ctx = ngx_pcalloc(r->pool, sizeof(void *) * ngx_http_max_module);
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399 if (r->ctx == NULL) {
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400 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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401 ngx_http_close_connection(c);
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402 return;
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403 }
|
|
|
404
|
|
|
405 c->single_connection = 1;
|
|
|
406 r->connection = c;
|
|
|
407
|
|
|
408 r->file.fd = NGX_INVALID_FILE;
|
|
|
409
|
|
|
410 r->headers_in.content_length_n = -1;
|
|
|
411 r->headers_in.keep_alive_n = -1;
|
|
|
412 r->headers_out.content_length_n = -1;
|
|
|
413 r->headers_out.last_modified_time = -1;
|
|
|
414
|
|
|
415 r->http_state = NGX_HTTP_READING_REQUEST_STATE;
|
|
|
416
|
|
|
417 #if (NGX_STAT_STUB)
|
|
|
418 (*ngx_stat_requests)++;
|
|
|
419 #endif
|
|
|
420
|
|
|
421 rev->event_handler(rev);
|
|
|
422 }
|
|
|
423
|
|
|
424
|
|
|
425 #if (NGX_HTTP_SSL)
|
|
|
426
|
|
|
427 static void ngx_http_ssl_handshake(ngx_event_t *rev)
|
|
|
428 {
|
|
|
429 int n;
|
|
|
430 ngx_int_t rc;
|
|
|
431 u_char buf[1];
|
|
|
432 ngx_connection_t *c;
|
|
|
433 ngx_http_request_t *r;
|
|
|
434
|
|
|
435 c = rev->data;
|
|
|
436 r = c->data;
|
|
|
437
|
|
|
438 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
439 "http check ssl handshake");
|
|
|
440
|
|
|
441 if (rev->timedout) {
|
|
|
442 ngx_http_client_error(r, 0, NGX_HTTP_REQUEST_TIME_OUT);
|
|
|
443 return;
|
|
|
444 }
|
|
|
445
|
|
|
446 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
447
|
|
|
448 if (n == -1 && ngx_socket_errno == NGX_EAGAIN) {
|
|
|
449 return;
|
|
|
450 }
|
|
|
451
|
|
|
452 if (n == 1) {
|
|
|
453 if (buf[0] == 0x80 /* SSLv2 */ || buf[0] == 0x16 /* SSLv3/TLSv1 */) {
|
|
|
454 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
455 "https ssl handshake: 0x%X", buf[0]);
|
|
|
456
|
|
|
457 c->recv = ngx_ssl_recv;
|
|
|
458 c->send_chain = ngx_ssl_send_chain;
|
|
|
459
|
|
|
460 rc = ngx_ssl_handshake(c);
|
|
|
461
|
|
|
462 if (rc == NGX_ERROR) {
|
|
|
463 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
464 ngx_http_close_connection(r->connection);
|
|
|
465 return;
|
|
|
466 }
|
|
|
467
|
|
|
468 if (rc != NGX_OK) {
|
|
|
469 return;
|
|
|
470 }
|
|
|
471
|
|
|
472 } else {
|
|
|
473 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
474 "plain http");
|
|
|
475
|
|
|
476 r->plain_http = 1;
|
|
|
477 }
|
|
|
478 }
|
|
|
479
|
|
|
480 rev->event_handler = ngx_http_process_request_line;
|
|
|
481 ngx_http_process_request_line(rev);
|
|
|
482 }
|
|
|
483
|
|
|
484 #endif
|
|
|
485
|
|
|
486
|
|
|
487 static void ngx_http_process_request_line(ngx_event_t *rev)
|
|
|
488 {
|
|
|
489 u_char *p;
|
|
|
490 ssize_t n;
|
|
|
491 ngx_int_t rc, rv;
|
|
|
492 ngx_connection_t *c;
|
|
|
493 ngx_http_request_t *r;
|
|
|
494 ngx_http_log_ctx_t *ctx;
|
|
|
495
|
|
|
496 c = rev->data;
|
|
|
497 r = c->data;
|
|
|
498
|
|
|
499 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
500 "http process request line");
|
|
|
501
|
|
|
502 if (rev->timedout) {
|
|
|
503 ngx_http_client_error(r, 0, NGX_HTTP_REQUEST_TIME_OUT);
|
|
|
504 return;
|
|
|
505 }
|
|
|
506
|
|
|
507 rc = NGX_AGAIN;
|
|
|
508
|
|
|
509 for ( ;; ) {
|
|
|
510
|
|
|
511 if (rc == NGX_AGAIN) {
|
|
|
512 n = ngx_http_read_request_header(r);
|
|
|
513
|
|
|
514 if (n == NGX_AGAIN || n == NGX_ERROR) {
|
|
|
515 return;
|
|
|
516 }
|
|
|
517 }
|
|
|
518
|
|
|
519 rc = ngx_http_parse_request_line(r, r->header_in);
|
|
|
520
|
|
|
521 if (rc == NGX_OK) {
|
|
|
522
|
|
|
523 /* the request line has been parsed successfully */
|
|
|
524
|
|
|
525 /* copy unparsed URI */
|
|
|
526
|
|
|
527 r->unparsed_uri.len = r->uri_end - r->uri_start;
|
|
|
528 r->unparsed_uri.data = ngx_palloc(r->pool, r->unparsed_uri.len + 1);
|
|
|
529 if (r->unparsed_uri.data == NULL) {
|
|
|
530 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
531 ngx_http_close_connection(c);
|
|
|
532 return;
|
|
|
533 }
|
|
|
534
|
|
|
535 ngx_cpystrn(r->unparsed_uri.data, r->uri_start,
|
|
|
536 r->unparsed_uri.len + 1);
|
|
|
537
|
|
|
538
|
|
|
539 /* copy URI */
|
|
|
540
|
|
|
541 if (r->args_start) {
|
|
|
542 r->uri.len = r->args_start - 1 - r->uri_start;
|
|
|
543 } else {
|
|
|
544 r->uri.len = r->uri_end - r->uri_start;
|
|
|
545 }
|
|
|
546
|
|
|
547 if (!(r->uri.data = ngx_palloc(r->pool, r->uri.len + 1))) {
|
|
|
548 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
549 ngx_http_close_connection(c);
|
|
|
550 return;
|
|
|
551 }
|
|
|
552
|
|
2
|
553 if (r->complex_uri || r->quoted_uri) {
|
|
0
|
554 rc = ngx_http_parse_complex_uri(r);
|
|
|
555
|
|
|
556 if (rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
557 ngx_http_close_request(r, rc);
|
|
|
558 ngx_http_close_connection(c);
|
|
|
559 return;
|
|
|
560 }
|
|
|
561
|
|
|
562 if (rc != NGX_OK) {
|
|
|
563 r->request_line.len = r->request_end - r->request_start;
|
|
|
564 r->request_line.data = r->request_start;
|
|
|
565
|
|
|
566 ngx_http_client_error(r, rc, NGX_HTTP_BAD_REQUEST);
|
|
|
567 return;
|
|
|
568 }
|
|
|
569
|
|
|
570 } else {
|
|
|
571 ngx_cpystrn(r->uri.data, r->uri_start, r->uri.len + 1);
|
|
|
572 }
|
|
|
573
|
|
|
574
|
|
|
575 r->request_line.len = r->request_end - r->request_start;
|
|
|
576 r->request_line.data = r->request_start;
|
|
|
577 r->request_line.data[r->request_line.len] = '\0';
|
|
|
578
|
|
|
579 if (r->method == 0) {
|
|
|
580 r->method_name.len = r->method_end - r->request_start + 1;
|
|
|
581 r->method_name.data = r->request_line.data;
|
|
|
582 }
|
|
|
583
|
|
|
584 if (r->uri_ext) {
|
|
|
585
|
|
|
586 /* copy URI extention */
|
|
|
587
|
|
|
588 if (r->args_start) {
|
|
|
589 r->exten.len = r->args_start - 1 - r->uri_ext;
|
|
|
590 } else {
|
|
|
591 r->exten.len = r->uri_end - r->uri_ext;
|
|
|
592 }
|
|
|
593
|
|
|
594 if (!(r->exten.data = ngx_palloc(r->pool, r->exten.len + 1))) {
|
|
|
595 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
596 ngx_http_close_connection(c);
|
|
|
597 return;
|
|
|
598 }
|
|
|
599
|
|
|
600 ngx_cpystrn(r->exten.data, r->uri_ext, r->exten.len + 1);
|
|
|
601 }
|
|
|
602
|
|
|
603 if (r->args_start && r->uri_end > r->args_start) {
|
|
|
604
|
|
|
605 /* copy URI arguments */
|
|
|
606
|
|
|
607 r->args.len = r->uri_end - r->args_start;
|
|
|
608
|
|
|
609 if (!(r->args.data = ngx_palloc(r->pool, r->args.len + 1))) {
|
|
|
610 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
611 ngx_http_close_connection(c);
|
|
|
612 return;
|
|
|
613 }
|
|
|
614
|
|
|
615 ngx_cpystrn(r->args.data, r->args_start, r->args.len + 1);
|
|
|
616 }
|
|
|
617
|
|
|
618 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
619 "http request line: \"%s\"", r->request_line.data);
|
|
|
620
|
|
|
621 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
622 "http uri: \"%s\"", r->uri.data);
|
|
|
623
|
|
|
624 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
625 "http args: \"%s\"",
|
|
|
626 r->args.data ? r->args.data : (u_char *) "");
|
|
|
627
|
|
|
628 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
629 "http exten: \"%s\"",
|
|
|
630 r->exten.data ? r->exten.data : (u_char *) "");
|
|
|
631
|
|
|
632 if (r->http_version < NGX_HTTP_VERSION_10) {
|
|
|
633 rev->event_handler = ngx_http_block_read;
|
|
|
634 ngx_http_handler(r);
|
|
|
635 return;
|
|
|
636 }
|
|
|
637
|
|
|
638
|
|
|
639 if (ngx_list_init(&r->headers_in.headers, r->pool, 20,
|
|
|
640 sizeof(ngx_table_elt_t)) == NGX_ERROR)
|
|
|
641 {
|
|
|
642 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
643 ngx_http_close_connection(c);
|
|
|
644 return;
|
|
|
645 }
|
|
|
646
|
|
|
647
|
|
|
648 if (ngx_array_init(&r->headers_in.cookies, r->pool, 5,
|
|
|
649 sizeof(ngx_table_elt_t *)) == NGX_ERROR)
|
|
|
650 {
|
|
|
651 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
652 ngx_http_close_connection(c);
|
|
|
653 return;
|
|
|
654 }
|
|
|
655
|
|
|
656
|
|
|
657 ctx = c->log->data;
|
|
|
658 ctx->action = "reading client request headers";
|
|
|
659 ctx->url = r->unparsed_uri.data;
|
|
|
660
|
|
|
661 rev->event_handler = ngx_http_process_request_headers;
|
|
|
662 ngx_http_process_request_headers(rev);
|
|
|
663
|
|
|
664 return;
|
|
|
665
|
|
|
666 } else if (rc != NGX_AGAIN) {
|
|
|
667
|
|
|
668 /* there was error while a request line parsing */
|
|
|
669
|
|
|
670 for (p = r->request_start; p < r->header_in->last; p++) {
|
|
|
671 if (*p == CR || *p == LF) {
|
|
|
672 break;
|
|
|
673 }
|
|
|
674 }
|
|
|
675
|
|
|
676 r->request_line.len = p - r->request_start;
|
|
|
677 r->request_line.data = r->request_start;
|
|
|
678
|
|
|
679 if (rc == NGX_HTTP_PARSE_INVALID_METHOD) {
|
|
|
680 r->http_version = NGX_HTTP_VERSION_10;
|
|
|
681 }
|
|
|
682
|
|
|
683 ngx_http_client_error(r, rc,
|
|
|
684 (rc == NGX_HTTP_PARSE_INVALID_METHOD) ?
|
|
|
685 NGX_HTTP_NOT_IMPLEMENTED:
|
|
|
686 NGX_HTTP_BAD_REQUEST);
|
|
|
687 return;
|
|
|
688 }
|
|
|
689
|
|
|
690 /* NGX_AGAIN: a request line parsing is still incomplete */
|
|
|
691
|
|
|
692 if (r->header_in->pos == r->header_in->end) {
|
|
|
693
|
|
|
694 rv = ngx_http_alloc_large_header_buffer(r, 1);
|
|
|
695
|
|
|
696 if (rv == NGX_ERROR) {
|
|
|
697 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
698 ngx_http_close_connection(c);
|
|
|
699 return;
|
|
|
700 }
|
|
|
701
|
|
|
702 if (rv == NGX_DECLINED) {
|
|
|
703 ngx_http_client_error(r, NGX_HTTP_PARSE_TOO_LONG_URI,
|
|
|
704 NGX_HTTP_REQUEST_URI_TOO_LARGE);
|
|
|
705 return;
|
|
|
706 }
|
|
|
707 }
|
|
|
708 }
|
|
|
709 }
|
|
|
710
|
|
|
711
|
|
|
712 static void ngx_http_process_request_headers(ngx_event_t *rev)
|
|
|
713 {
|
|
|
714 ssize_t n;
|
|
|
715 ngx_int_t rc, rv, i;
|
|
|
716 ngx_table_elt_t *h, **cookie;
|
|
|
717 ngx_connection_t *c;
|
|
|
718 ngx_http_request_t *r;
|
|
|
719
|
|
|
720 c = rev->data;
|
|
|
721 r = c->data;
|
|
|
722
|
|
|
723 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
724 "http process request header line");
|
|
|
725
|
|
|
726 if (rev->timedout) {
|
|
|
727 ngx_http_client_error(r, 0, NGX_HTTP_REQUEST_TIME_OUT);
|
|
|
728 return;
|
|
|
729 }
|
|
|
730
|
|
|
731 rc = NGX_AGAIN;
|
|
|
732
|
|
|
733 for ( ;; ) {
|
|
|
734
|
|
|
735 if (rc == NGX_AGAIN) {
|
|
|
736
|
|
|
737 if (r->header_in->pos == r->header_in->end) {
|
|
|
738
|
|
|
739 rv = ngx_http_alloc_large_header_buffer(r, 0);
|
|
|
740
|
|
|
741 if (rv == NGX_ERROR) {
|
|
|
742 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
743 ngx_http_close_connection(c);
|
|
|
744 return;
|
|
|
745 }
|
|
|
746
|
|
|
747 if (rv == NGX_DECLINED) {
|
|
|
748 ngx_http_client_error(r, NGX_HTTP_PARSE_TOO_LONG_HEADER,
|
|
|
749 NGX_HTTP_BAD_REQUEST);
|
|
|
750 return;
|
|
|
751 }
|
|
|
752 }
|
|
|
753
|
|
|
754 n = ngx_http_read_request_header(r);
|
|
|
755
|
|
|
756 if (n == NGX_AGAIN || n == NGX_ERROR) {
|
|
|
757 return;
|
|
|
758 }
|
|
|
759 }
|
|
|
760
|
|
|
761 rc = ngx_http_parse_header_line(r, r->header_in);
|
|
|
762
|
|
|
763 if (rc == NGX_OK) {
|
|
|
764
|
|
|
765 /* a header line has been parsed successfully */
|
|
|
766
|
|
|
767 r->headers_n++;
|
|
|
768
|
|
|
769 if (!(h = ngx_list_push(&r->headers_in.headers))) {
|
|
|
770 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
771 ngx_http_close_connection(c);
|
|
|
772 return;
|
|
|
773 }
|
|
|
774
|
|
|
775 h->key.len = r->header_name_end - r->header_name_start;
|
|
|
776 h->key.data = r->header_name_start;
|
|
|
777 h->key.data[h->key.len] = '\0';
|
|
|
778
|
|
|
779 h->value.len = r->header_end - r->header_start;
|
|
|
780 h->value.data = r->header_start;
|
|
|
781 h->value.data[h->value.len] = '\0';
|
|
|
782
|
|
|
783 if (h->key.len == sizeof("Cookie") - 1
|
|
|
784 && ngx_strcasecmp(h->key.data, "Cookie") == 0)
|
|
|
785 {
|
|
|
786 if (!(cookie = ngx_array_push(&r->headers_in.cookies))) {
|
|
|
787 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
788 ngx_http_close_connection(c);
|
|
|
789 return;
|
|
|
790 }
|
|
|
791
|
|
|
792 *cookie = h;
|
|
|
793
|
|
|
794 } else {
|
|
|
795
|
|
|
796 for (i = 0; ngx_http_headers_in[i].name.len != 0; i++) {
|
|
|
797 if (ngx_http_headers_in[i].name.len != h->key.len) {
|
|
|
798 continue;
|
|
|
799 }
|
|
|
800
|
|
|
801 if (ngx_strcasecmp(ngx_http_headers_in[i].name.data,
|
|
|
802 h->key.data) == 0)
|
|
|
803 {
|
|
|
804 *((ngx_table_elt_t **) ((char *) &r->headers_in
|
|
|
805 + ngx_http_headers_in[i].offset)) = h;
|
|
|
806 break;
|
|
|
807 }
|
|
|
808 }
|
|
|
809 }
|
|
|
810
|
|
|
811 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
812 "http header: \"%s: %s\"",
|
|
|
813 h->key.data, h->value.data);
|
|
|
814
|
|
|
815 continue;
|
|
|
816
|
|
|
817 } else if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
|
|
|
818
|
|
|
819 /* a whole header has been parsed successfully */
|
|
|
820
|
|
|
821 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
822 "http header done");
|
|
|
823
|
|
|
824 r->http_state = NGX_HTTP_PROCESS_REQUEST_STATE;
|
|
|
825
|
|
|
826 rc = ngx_http_process_request_header(r);
|
|
|
827
|
|
|
828 if (rc != NGX_OK) {
|
|
|
829 ngx_http_client_error(r, rc, NGX_HTTP_BAD_REQUEST);
|
|
|
830 return;
|
|
|
831 }
|
|
|
832
|
|
|
833 if (rev->timer_set) {
|
|
|
834 ngx_del_timer(rev);
|
|
|
835 }
|
|
|
836
|
|
|
837 #if (NGX_STAT_STUB)
|
|
|
838 (*ngx_stat_reading)--;
|
|
|
839 r->stat_reading = 0;
|
|
|
840 (*ngx_stat_writing)++;
|
|
|
841 r->stat_writing = 1;
|
|
|
842 #endif
|
|
|
843
|
|
|
844 rev->event_handler = ngx_http_block_read;
|
|
|
845 ngx_http_handler(r);
|
|
|
846 return;
|
|
|
847
|
|
|
848 } else if (rc != NGX_AGAIN) {
|
|
|
849
|
|
|
850 /* there was error while a header line parsing */
|
|
|
851
|
|
|
852 #if (NGX_DEBUG)
|
|
|
853 if (rc == NGX_HTTP_PARSE_INVALID_HEADER
|
|
|
854 && (rev->log->log_level & NGX_LOG_DEBUG_HTTP))
|
|
|
855 {
|
|
|
856 u_char *p;
|
|
|
857 for (p = r->header_name_start;
|
|
|
858 p < r->header_in->last - 1;
|
|
|
859 p++)
|
|
|
860 {
|
|
|
861 if (*p == LF) {
|
|
|
862 break;
|
|
|
863 }
|
|
|
864 }
|
|
|
865 *p = '\0';
|
|
|
866 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
867 "http invalid header: \"%s\"",
|
|
|
868 r->header_name_start);
|
|
|
869 }
|
|
|
870 #endif
|
|
|
871
|
|
|
872 ngx_http_client_error(r, rc, NGX_HTTP_BAD_REQUEST);
|
|
|
873 return;
|
|
|
874 }
|
|
|
875
|
|
|
876 /* NGX_AGAIN: a header line parsing is still not complete */
|
|
|
877
|
|
|
878 }
|
|
|
879 }
|
|
|
880
|
|
|
881
|
|
|
882 static ssize_t ngx_http_read_request_header(ngx_http_request_t *r)
|
|
|
883 {
|
|
|
884 ssize_t n;
|
|
|
885 ngx_event_t *rev;
|
|
|
886 ngx_http_core_srv_conf_t *cscf;
|
|
|
887
|
|
|
888 rev = r->connection->read;
|
|
|
889
|
|
|
890 n = r->header_in->last - r->header_in->pos;
|
|
|
891
|
|
|
892 if (n > 0) {
|
|
|
893 return n;
|
|
|
894 }
|
|
|
895
|
|
|
896 if (!rev->ready) {
|
|
|
897 return NGX_AGAIN;
|
|
|
898 }
|
|
|
899
|
|
|
900 n = r->connection->recv(r->connection, r->header_in->last,
|
|
|
901 r->header_in->end - r->header_in->last);
|
|
|
902
|
|
|
903 if (n == NGX_AGAIN) {
|
|
|
904 if (!r->header_timeout_set) {
|
|
|
905 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
906 ngx_add_timer(rev, cscf->client_header_timeout);
|
|
|
907 r->header_timeout_set = 1;
|
|
|
908 }
|
|
|
909
|
|
|
910 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
911 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
912 ngx_http_close_connection(r->connection);
|
|
|
913 return NGX_ERROR;
|
|
|
914 }
|
|
|
915
|
|
|
916 return NGX_AGAIN;
|
|
|
917 }
|
|
|
918
|
|
|
919 if (n == 0) {
|
|
|
920 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
921 "client closed prematurely connection");
|
|
|
922 }
|
|
|
923
|
|
|
924 if (n == 0 || n == NGX_ERROR) {
|
|
|
925 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
926 ngx_http_close_connection(r->connection);
|
|
|
927 return NGX_ERROR;
|
|
|
928 }
|
|
|
929
|
|
|
930 r->header_in->last += n;
|
|
|
931
|
|
|
932 return n;
|
|
|
933 }
|
|
|
934
|
|
|
935
|
|
|
936 static ngx_int_t ngx_http_alloc_large_header_buffer(ngx_http_request_t *r,
|
|
|
937 ngx_uint_t request_line)
|
|
|
938 {
|
|
|
939 u_char *old, *new;
|
|
|
940 ngx_buf_t *b;
|
|
|
941 ngx_http_connection_t *hc;
|
|
|
942 ngx_http_core_srv_conf_t *cscf;
|
|
|
943
|
|
|
944 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
945 "http alloc large header buffer");
|
|
|
946
|
|
|
947 if (request_line && r->state == 0) {
|
|
|
948
|
|
|
949 /* the client fills up the buffer with "\r\n" */
|
|
|
950
|
|
|
951 r->header_in->pos = r->header_in->start;
|
|
|
952 r->header_in->last = r->header_in->start;
|
|
|
953
|
|
|
954 return NGX_OK;
|
|
|
955 }
|
|
|
956
|
|
|
957 old = request_line ? r->request_start : r->header_name_start;
|
|
|
958
|
|
|
959 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
960
|
|
|
961 if (r->state != 0
|
|
|
962 && (size_t) (r->header_in->pos - old)
|
|
|
963 >= cscf->large_client_header_buffers.size)
|
|
|
964 {
|
|
|
965 return NGX_DECLINED;
|
|
|
966 }
|
|
|
967
|
|
|
968 hc = r->http_connection;
|
|
|
969
|
|
|
970 if (hc->nfree) {
|
|
|
971 b = hc->free[--hc->nfree];
|
|
|
972
|
|
|
973 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
974 "http large header free: " PTR_FMT " " SIZE_T_FMT,
|
|
|
975 b->pos, b->end - b->last);
|
|
|
976
|
|
|
977 } else if (hc->nbusy < cscf->large_client_header_buffers.num) {
|
|
|
978
|
|
|
979 if (hc->busy == NULL) {
|
|
|
980 hc->busy = ngx_palloc(r->connection->pool,
|
|
|
981 cscf->large_client_header_buffers.num * sizeof(ngx_buf_t *));
|
|
|
982 if (hc->busy == NULL) {
|
|
|
983 return NGX_ERROR;
|
|
|
984 }
|
|
|
985 }
|
|
|
986
|
|
|
987 b = ngx_create_temp_buf(r->connection->pool,
|
|
|
988 cscf->large_client_header_buffers.size);
|
|
|
989 if (b == NULL) {
|
|
|
990 return NGX_ERROR;
|
|
|
991 }
|
|
|
992
|
|
|
993 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
994 "http large header alloc: " PTR_FMT " " SIZE_T_FMT,
|
|
|
995 b->pos, b->end - b->last);
|
|
|
996
|
|
|
997 } else {
|
|
|
998 return NGX_DECLINED;
|
|
|
999 }
|
|
|
1000
|
|
|
1001 hc->busy[hc->nbusy++] = b;
|
|
|
1002
|
|
|
1003 if (r->state == 0) {
|
|
|
1004 /*
|
|
|
1005 * r->state == 0 means that a header line was parsed successfully
|
|
|
1006 * and we do not need to copy incomplete header line and
|
|
|
1007 * to relocate the parser header pointers
|
|
|
1008 */
|
|
|
1009
|
|
|
1010 r->header_in = b;
|
|
|
1011
|
|
|
1012 return NGX_OK;
|
|
|
1013 }
|
|
|
1014
|
|
|
1015 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1016 "http large header copy: %d", r->header_in->pos - old);
|
|
|
1017
|
|
|
1018 new = b->start;
|
|
|
1019
|
|
|
1020 ngx_memcpy(new, old, r->header_in->pos - old);
|
|
|
1021
|
|
|
1022 b->pos = new + (r->header_in->pos - old);
|
|
|
1023 b->last = new + (r->header_in->pos - old);
|
|
|
1024
|
|
|
1025 if (request_line) {
|
|
|
1026 r->request_start = new;
|
|
|
1027
|
|
|
1028 if (r->request_end) {
|
|
|
1029 r->request_end = new + (r->request_end - old);
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 r->method_end = new + (r->method_end - old);
|
|
|
1033
|
|
|
1034 r->uri_start = new + (r->uri_start - old);
|
|
|
1035 r->uri_end = new + (r->uri_end - old);
|
|
|
1036
|
|
|
1037 if (r->schema_start) {
|
|
|
1038 r->schema_start = new + (r->schema_start - old);
|
|
|
1039 r->schema_end = new + (r->schema_end - old);
|
|
|
1040 }
|
|
|
1041
|
|
|
1042 if (r->host_start) {
|
|
|
1043 r->host_start = new + (r->host_start - old);
|
|
|
1044 r->host_end = new + (r->host_end - old);
|
|
|
1045 }
|
|
|
1046
|
|
|
1047 if (r->port_start) {
|
|
|
1048 r->port_start = new + (r->port_start - old);
|
|
|
1049 r->port_end = new + (r->port_end - old);
|
|
|
1050 }
|
|
|
1051
|
|
|
1052 if (r->uri_ext) {
|
|
|
1053 r->uri_ext = new + (r->uri_ext - old);
|
|
|
1054 }
|
|
|
1055
|
|
|
1056 if (r->args_start) {
|
|
|
1057 r->args_start = new + (r->args_start - old);
|
|
|
1058 }
|
|
|
1059
|
|
|
1060 } else {
|
|
|
1061 r->header_name_start = new;
|
|
|
1062 r->header_name_end = new + (r->header_name_end - old);
|
|
|
1063 r->header_start = new + (r->header_start - old);
|
|
|
1064 r->header_end = new + (r->header_end - old);
|
|
|
1065 }
|
|
|
1066
|
|
|
1067 r->header_in = b;
|
|
|
1068
|
|
|
1069 return NGX_OK;
|
|
|
1070 }
|
|
|
1071
|
|
|
1072
|
|
|
1073 static ngx_int_t ngx_http_process_request_header(ngx_http_request_t *r)
|
|
|
1074 {
|
|
|
1075 u_char *ua, *user_agent;
|
|
|
1076 size_t len;
|
|
|
1077 ngx_uint_t i;
|
|
|
1078 ngx_http_server_name_t *name;
|
|
|
1079 ngx_http_core_srv_conf_t *cscf;
|
|
|
1080 ngx_http_core_loc_conf_t *clcf;
|
|
|
1081
|
|
|
1082 if (r->headers_in.host) {
|
|
|
1083 for (len = 0; len < r->headers_in.host->value.len; len++) {
|
|
|
1084 if (r->headers_in.host->value.data[len] == ':') {
|
|
|
1085 break;
|
|
|
1086 }
|
|
|
1087 }
|
|
|
1088 r->headers_in.host_name_len = len;
|
|
|
1089
|
|
|
1090 /* find the name based server configuration */
|
|
|
1091
|
|
|
1092 name = r->virtual_names->elts;
|
|
|
1093 for (i = 0; i < r->virtual_names->nelts; i++) {
|
|
|
1094 if (r->headers_in.host_name_len != name[i].name.len) {
|
|
|
1095 continue;
|
|
|
1096 }
|
|
|
1097
|
|
|
1098 if (ngx_strncasecmp(r->headers_in.host->value.data,
|
|
|
1099 name[i].name.data,
|
|
|
1100 r->headers_in.host_name_len) == 0)
|
|
|
1101 {
|
|
|
1102 r->srv_conf = name[i].core_srv_conf->ctx->srv_conf;
|
|
|
1103 r->loc_conf = name[i].core_srv_conf->ctx->loc_conf;
|
|
|
1104 r->server_name = &name[i].name;
|
|
|
1105
|
|
|
1106 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1107 r->connection->log->file = clcf->err_log->file;
|
|
|
1108 if (!(r->connection->log->log_level & NGX_LOG_DEBUG_CONNECTION))
|
|
|
1109 {
|
|
|
1110 r->connection->log->log_level = clcf->err_log->log_level;
|
|
|
1111 }
|
|
|
1112
|
|
|
1113 break;
|
|
|
1114 }
|
|
|
1115 }
|
|
|
1116
|
|
|
1117 if (i == r->virtual_names->nelts) {
|
|
|
1118 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
1119
|
|
|
1120 if (cscf->restrict_host_names != NGX_HTTP_RESTRICT_HOST_OFF) {
|
|
|
1121 return NGX_HTTP_PARSE_INVALID_HOST;
|
|
|
1122 }
|
|
|
1123 }
|
|
|
1124
|
|
|
1125 } else {
|
|
|
1126 if (r->http_version > NGX_HTTP_VERSION_10) {
|
|
|
1127 return NGX_HTTP_PARSE_NO_HOST_HEADER;
|
|
|
1128 }
|
|
|
1129 r->headers_in.host_name_len = 0;
|
|
|
1130 }
|
|
|
1131
|
|
|
1132 if (r->headers_in.content_length) {
|
|
|
1133 r->headers_in.content_length_n =
|
|
|
1134 ngx_atoi(r->headers_in.content_length->value.data,
|
|
|
1135 r->headers_in.content_length->value.len);
|
|
|
1136
|
|
|
1137 if (r->headers_in.content_length_n == NGX_ERROR) {
|
|
|
1138 return NGX_HTTP_PARSE_INVALID_CL_HEADER;
|
|
|
1139 }
|
|
|
1140 }
|
|
|
1141
|
|
|
1142 if (r->method == NGX_HTTP_POST && r->headers_in.content_length_n <= 0) {
|
|
|
1143 return NGX_HTTP_PARSE_POST_WO_CL_HEADER;
|
|
|
1144 }
|
|
|
1145
|
|
|
1146 if (r->plain_http) {
|
|
|
1147 return NGX_HTTP_PARSE_HTTP_TO_HTTPS;
|
|
|
1148 }
|
|
|
1149
|
|
|
1150 if (r->headers_in.connection) {
|
|
|
1151 if (r->headers_in.connection->value.len == 5
|
|
|
1152 && ngx_strcasecmp(r->headers_in.connection->value.data, "close")
|
|
|
1153 == 0)
|
|
|
1154 {
|
|
|
1155 r->headers_in.connection_type = NGX_HTTP_CONNECTION_CLOSE;
|
|
|
1156
|
|
|
1157 } else if (r->headers_in.connection->value.len == 10
|
|
|
1158 && ngx_strcasecmp(r->headers_in.connection->value.data,
|
|
|
1159 "keep-alive") == 0)
|
|
|
1160 {
|
|
|
1161 r->headers_in.connection_type = NGX_HTTP_CONNECTION_KEEP_ALIVE;
|
|
|
1162
|
|
|
1163 if (r->headers_in.keep_alive) {
|
|
|
1164 r->headers_in.keep_alive_n =
|
|
|
1165 ngx_atoi(r->headers_in.keep_alive->value.data,
|
|
|
1166 r->headers_in.keep_alive->value.len);
|
|
|
1167 }
|
|
|
1168 }
|
|
|
1169 }
|
|
|
1170
|
|
|
1171 if (r->headers_in.user_agent) {
|
|
|
1172
|
|
|
1173 /*
|
|
|
1174 * check some widespread browsers while the headers are still
|
|
|
1175 * in CPU cache
|
|
|
1176 */
|
|
|
1177
|
|
|
1178 user_agent = r->headers_in.user_agent->value.data;
|
|
|
1179
|
|
|
1180 ua = (u_char *) ngx_strstr(user_agent, "MSIE");
|
|
|
1181
|
|
|
1182 if (ua && ua + 8 < user_agent + r->headers_in.user_agent->value.len) {
|
|
|
1183
|
|
|
1184 r->headers_in.msie = 1;
|
|
|
1185
|
|
|
1186 if (ua[4] == ' ' && ua[5] == '4' && ua[6] == '.') {
|
|
|
1187 r->headers_in.msie4 = 1;
|
|
|
1188 }
|
|
|
1189
|
|
|
1190 #if 0
|
|
|
1191 /* MSIE ignores the SSL "close notify" alert */
|
|
|
1192
|
|
|
1193 ngx_ssl_set_nosendshut(r->connection->ssl);
|
|
|
1194 #endif
|
|
|
1195 }
|
|
|
1196
|
|
|
1197 if (ngx_strstr(user_agent, "Opera")) {
|
|
|
1198 r->headers_in.opera = 1;
|
|
|
1199 r->headers_in.msie = 0;
|
|
|
1200 r->headers_in.msie4 = 0;
|
|
|
1201 }
|
|
|
1202
|
|
|
1203 if (!r->headers_in.msie && !r->headers_in.opera) {
|
|
|
1204
|
|
|
1205 if (ngx_strstr(user_agent, "Gecko/")) {
|
|
|
1206 r->headers_in.gecko = 1;
|
|
|
1207
|
|
|
1208 } else if (ngx_strstr(user_agent, "Konqueror")) {
|
|
|
1209 r->headers_in.konqueror = 1;
|
|
|
1210 }
|
|
|
1211 }
|
|
|
1212 }
|
|
|
1213
|
|
|
1214 return NGX_OK;
|
|
|
1215 }
|
|
|
1216
|
|
|
1217
|
|
|
1218 void ngx_http_finalize_request(ngx_http_request_t *r, int rc)
|
|
|
1219 {
|
|
|
1220 ngx_http_core_loc_conf_t *clcf;
|
|
|
1221
|
|
|
1222 /* r can be already destroyed when rc == NGX_DONE */
|
|
|
1223
|
|
|
1224 if (rc == NGX_DONE || r->main) {
|
|
|
1225 return;
|
|
|
1226 }
|
|
|
1227
|
|
|
1228 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1229 "http finalize request: %d", rc);
|
|
|
1230
|
|
|
1231 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
|
|
|
1232
|
|
|
1233 if (r->connection->read->timer_set) {
|
|
|
1234 ngx_del_timer(r->connection->read);
|
|
|
1235 }
|
|
|
1236
|
|
|
1237 if (r->connection->write->timer_set) {
|
|
|
1238 ngx_del_timer(r->connection->write);
|
|
|
1239 }
|
|
|
1240
|
|
|
1241 if (rc == NGX_HTTP_CLIENT_CLOSED_REQUEST || r->closed) {
|
|
|
1242 ngx_http_close_request(r, 0);
|
|
|
1243 ngx_http_close_connection(r->connection);
|
|
|
1244 return;
|
|
|
1245 }
|
|
|
1246
|
|
|
1247 ngx_http_finalize_request(r, ngx_http_special_response_handler(r, rc));
|
|
|
1248
|
|
|
1249 return;
|
|
|
1250
|
|
|
1251 } else if (rc == NGX_ERROR) {
|
|
|
1252 ngx_http_close_request(r, 0);
|
|
|
1253 ngx_http_close_connection(r->connection);
|
|
|
1254 return;
|
|
|
1255
|
|
|
1256 } else if (rc == NGX_AGAIN) {
|
|
|
1257 ngx_http_set_write_handler(r);
|
|
|
1258 return;
|
|
|
1259 }
|
|
|
1260
|
|
|
1261 if (r->connection->read->timer_set) {
|
|
|
1262 ngx_del_timer(r->connection->read);
|
|
|
1263 }
|
|
|
1264
|
|
|
1265 if (r->connection->write->timer_set) {
|
|
|
1266 r->connection->write->delayed = 0;
|
|
|
1267 ngx_del_timer(r->connection->write);
|
|
|
1268 }
|
|
|
1269
|
|
|
1270 if (r->connection->read->pending_eof) {
|
|
|
1271 #if (NGX_KQUEUE)
|
|
|
1272 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log,
|
|
|
1273 r->connection->read->kq_errno,
|
|
|
1274 "kevent() reported about an closed connection");
|
|
|
1275 #endif
|
|
|
1276 ngx_http_close_request(r, 0);
|
|
|
1277 ngx_http_close_connection(r->connection);
|
|
|
1278 return;
|
|
|
1279 }
|
|
|
1280
|
|
|
1281 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1282
|
|
|
1283 if (!ngx_terminate
|
|
|
1284 && !ngx_exiting
|
|
|
1285 && r->keepalive != 0
|
|
|
1286 && clcf->keepalive_timeout > 0)
|
|
|
1287 {
|
|
|
1288 ngx_http_set_keepalive(r);
|
|
|
1289 return;
|
|
|
1290
|
|
|
1291 } else if (r->lingering_close && clcf->lingering_timeout > 0) {
|
|
|
1292 ngx_http_set_lingering_close(r);
|
|
|
1293 return;
|
|
|
1294 }
|
|
|
1295
|
|
|
1296 ngx_http_close_request(r, 0);
|
|
|
1297 ngx_http_close_connection(r->connection);
|
|
|
1298 }
|
|
|
1299
|
|
|
1300
|
|
|
1301 static void ngx_http_set_write_handler(ngx_http_request_t *r)
|
|
|
1302 {
|
|
|
1303 ngx_event_t *wev;
|
|
|
1304 ngx_http_core_loc_conf_t *clcf;
|
|
|
1305
|
|
|
1306 wev = r->connection->write;
|
|
|
1307 wev->event_handler = ngx_http_writer;
|
|
|
1308
|
|
|
1309 r->http_state = NGX_HTTP_WRITING_REQUEST_STATE;
|
|
|
1310
|
|
|
1311 if (wev->ready && wev->delayed) {
|
|
|
1312 return;
|
|
|
1313 }
|
|
|
1314
|
|
|
1315 clcf = ngx_http_get_module_loc_conf(r->main ? r->main : r,
|
|
|
1316 ngx_http_core_module);
|
|
|
1317 if (!wev->delayed) {
|
|
|
1318 ngx_add_timer(wev, clcf->send_timeout);
|
|
|
1319 }
|
|
|
1320
|
|
2
|
1321 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
|
0
|
1322 ngx_http_close_request(r, 0);
|
|
|
1323 ngx_http_close_connection(r->connection);
|
|
|
1324 }
|
|
|
1325
|
|
|
1326 return;
|
|
|
1327 }
|
|
|
1328
|
|
|
1329
|
|
|
1330 void ngx_http_writer(ngx_event_t *wev)
|
|
|
1331 {
|
|
|
1332 int rc;
|
|
|
1333 ngx_connection_t *c;
|
|
|
1334 ngx_http_request_t *r;
|
|
|
1335 ngx_http_core_loc_conf_t *clcf;
|
|
|
1336
|
|
|
1337 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, "http writer handler");
|
|
|
1338
|
|
|
1339 c = wev->data;
|
|
|
1340 r = c->data;
|
|
|
1341
|
|
|
1342 if (wev->timedout) {
|
|
|
1343 if (!wev->delayed) {
|
|
|
1344 ngx_http_client_error(r, 0, NGX_HTTP_REQUEST_TIME_OUT);
|
|
|
1345 return;
|
|
|
1346 }
|
|
|
1347
|
|
|
1348 wev->timedout = 0;
|
|
|
1349 wev->delayed = 0;
|
|
|
1350
|
|
|
1351 if (!wev->ready) {
|
|
|
1352 clcf = ngx_http_get_module_loc_conf(r->main ? r->main : r,
|
|
|
1353 ngx_http_core_module);
|
|
|
1354 ngx_add_timer(wev, clcf->send_timeout);
|
|
|
1355
|
|
2
|
1356 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
|
0
|
1357 ngx_http_close_request(r, 0);
|
|
|
1358 ngx_http_close_connection(r->connection);
|
|
|
1359 }
|
|
|
1360
|
|
|
1361 return;
|
|
|
1362 }
|
|
|
1363
|
|
|
1364 } else {
|
|
|
1365 if (wev->delayed) {
|
|
|
1366 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1367 "http writer delayed");
|
|
|
1368
|
|
|
1369 clcf = ngx_http_get_module_loc_conf(r->main ? r->main : r,
|
|
|
1370 ngx_http_core_module);
|
|
2
|
1371
|
|
|
1372 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
|
0
|
1373 ngx_http_close_request(r, 0);
|
|
|
1374 ngx_http_close_connection(r->connection);
|
|
|
1375 }
|
|
|
1376
|
|
|
1377 return;
|
|
|
1378 }
|
|
|
1379 }
|
|
|
1380
|
|
|
1381 rc = ngx_http_output_filter(r, NULL);
|
|
|
1382
|
|
|
1383 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1384 "http writer output filter: %d", rc);
|
|
|
1385
|
|
|
1386 if (rc == NGX_AGAIN) {
|
|
|
1387 clcf = ngx_http_get_module_loc_conf(r->main ? r->main : r,
|
|
|
1388 ngx_http_core_module);
|
|
|
1389 if (!wev->ready && !wev->delayed) {
|
|
|
1390 ngx_add_timer(wev, clcf->send_timeout);
|
|
|
1391 }
|
|
|
1392
|
|
2
|
1393 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
|
0
|
1394 ngx_http_close_request(r, 0);
|
|
|
1395 ngx_http_close_connection(r->connection);
|
|
|
1396 }
|
|
|
1397
|
|
|
1398 return;
|
|
|
1399 }
|
|
|
1400
|
|
|
1401 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http writer done");
|
|
|
1402
|
|
|
1403 ngx_http_finalize_request(r, rc);
|
|
|
1404 }
|
|
|
1405
|
|
|
1406
|
|
|
1407 static void ngx_http_block_read(ngx_event_t *rev)
|
|
|
1408 {
|
|
|
1409 ngx_connection_t *c;
|
|
|
1410 ngx_http_request_t *r;
|
|
|
1411
|
|
|
1412 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http read blocked");
|
|
|
1413
|
|
|
1414 /* aio does not call this handler */
|
|
|
1415
|
|
|
1416 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && rev->active) {
|
|
|
1417 if (ngx_del_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
1418 c = rev->data;
|
|
|
1419 r = c->data;
|
|
|
1420 ngx_http_close_request(r, 0);
|
|
|
1421 ngx_http_close_connection(c);
|
|
|
1422 }
|
|
|
1423 }
|
|
|
1424 }
|
|
|
1425
|
|
|
1426
|
|
|
1427 ngx_int_t ngx_http_discard_body(ngx_http_request_t *r)
|
|
|
1428 {
|
|
|
1429 ssize_t size;
|
|
|
1430 ngx_event_t *rev;
|
|
|
1431
|
|
|
1432 rev = r->connection->read;
|
|
|
1433
|
|
|
1434 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http set discard body");
|
|
|
1435
|
|
|
1436 if (rev->timer_set) {
|
|
|
1437 ngx_del_timer(rev);
|
|
|
1438 }
|
|
|
1439
|
|
|
1440 if (r->headers_in.content_length_n <= 0) {
|
|
|
1441 return NGX_OK;
|
|
|
1442 }
|
|
|
1443
|
|
|
1444 size = r->header_in->last - r->header_in->pos;
|
|
|
1445
|
|
|
1446 if (size) {
|
|
|
1447 if (r->headers_in.content_length_n > size) {
|
|
|
1448 r->headers_in.content_length_n -= size;
|
|
|
1449
|
|
|
1450 } else {
|
|
|
1451 r->header_in->pos += r->headers_in.content_length_n;
|
|
|
1452 r->headers_in.content_length_n = 0;
|
|
|
1453 return NGX_OK;
|
|
|
1454 }
|
|
|
1455 }
|
|
|
1456
|
|
|
1457 rev->event_handler = ngx_http_read_discarded_body_event;
|
|
|
1458
|
|
|
1459 if (ngx_handle_level_read_event(rev) == NGX_ERROR) {
|
|
|
1460 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1461 }
|
|
|
1462
|
|
|
1463 return ngx_http_read_discarded_body(r);
|
|
|
1464 }
|
|
|
1465
|
|
|
1466
|
|
|
1467 static void ngx_http_read_discarded_body_event(ngx_event_t *rev)
|
|
|
1468 {
|
|
|
1469 ngx_int_t rc;
|
|
|
1470 ngx_connection_t *c;
|
|
|
1471 ngx_http_request_t *r;
|
|
|
1472
|
|
|
1473 c = rev->data;
|
|
|
1474 r = c->data;
|
|
|
1475
|
|
|
1476 rc = ngx_http_read_discarded_body(r);
|
|
|
1477
|
|
|
1478 if (rc == NGX_AGAIN) {
|
|
|
1479 if (ngx_handle_level_read_event(rev) == NGX_ERROR) {
|
|
|
1480 ngx_http_close_request(r, rc);
|
|
|
1481 ngx_http_close_connection(c);
|
|
|
1482 return;
|
|
|
1483 }
|
|
|
1484 }
|
|
|
1485
|
|
|
1486 if (rc != NGX_OK) {
|
|
|
1487 ngx_http_close_request(r, rc);
|
|
|
1488 ngx_http_close_connection(c);
|
|
|
1489 }
|
|
|
1490 }
|
|
|
1491
|
|
|
1492
|
|
|
1493 static ngx_int_t ngx_http_read_discarded_body(ngx_http_request_t *r)
|
|
|
1494 {
|
|
|
1495 ssize_t size, n;
|
|
|
1496 u_char buffer[NGX_HTTP_DISCARD_BUFFER_SIZE];
|
|
|
1497
|
|
|
1498 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1499 "http read discarded body");
|
|
|
1500
|
|
|
1501 if (r->headers_in.content_length_n == 0) {
|
|
|
1502 return NGX_OK;
|
|
|
1503 }
|
|
|
1504
|
|
|
1505
|
|
|
1506 size = r->headers_in.content_length_n;
|
|
|
1507
|
|
|
1508 if (size > NGX_HTTP_DISCARD_BUFFER_SIZE) {
|
|
|
1509 size = NGX_HTTP_DISCARD_BUFFER_SIZE;
|
|
|
1510 }
|
|
|
1511
|
|
|
1512 n = r->connection->recv(r->connection, buffer, size);
|
|
|
1513
|
|
|
1514 if (n == NGX_ERROR) {
|
|
|
1515
|
|
|
1516 r->closed = 1;
|
|
|
1517
|
|
|
1518 /*
|
|
|
1519 * if a client request body is discarded then we already set
|
|
|
1520 * some HTTP response code for client and we can ignore the error
|
|
|
1521 */
|
|
|
1522
|
|
|
1523 return NGX_OK;
|
|
|
1524 }
|
|
|
1525
|
|
|
1526 if (n == NGX_AGAIN) {
|
|
|
1527 return NGX_AGAIN;
|
|
|
1528 }
|
|
|
1529
|
|
|
1530 r->headers_in.content_length_n -= n;
|
|
|
1531
|
|
|
1532 return NGX_OK;
|
|
|
1533 }
|
|
|
1534
|
|
|
1535
|
|
|
1536 static void ngx_http_set_keepalive(ngx_http_request_t *r)
|
|
|
1537 {
|
|
2
|
1538 int tcp_nodelay;
|
|
0
|
1539 ngx_int_t i;
|
|
|
1540 ngx_buf_t *b, *f;
|
|
|
1541 ngx_event_t *rev, *wev;
|
|
|
1542 ngx_connection_t *c;
|
|
|
1543 ngx_http_connection_t *hc;
|
|
|
1544 ngx_http_log_ctx_t *ctx;
|
|
|
1545 ngx_http_core_srv_conf_t *cscf;
|
|
|
1546 ngx_http_core_loc_conf_t *clcf;
|
|
|
1547
|
|
|
1548 c = r->connection;
|
|
|
1549 rev = c->read;
|
|
|
1550
|
|
|
1551 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "set http keepalive handler");
|
|
|
1552
|
|
|
1553 ctx = (ngx_http_log_ctx_t *) c->log->data;
|
|
|
1554 ctx->action = "closing request";
|
|
|
1555
|
|
|
1556 hc = r->http_connection;
|
|
|
1557 b = r->header_in;
|
|
|
1558
|
|
|
1559 if (b->pos < b->last) {
|
|
|
1560
|
|
|
1561 /* the pipelined request */
|
|
|
1562
|
|
|
1563 if (b != c->buffer) {
|
|
|
1564
|
|
|
1565 /* move the large header buffers to the free list */
|
|
|
1566
|
|
|
1567 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
1568
|
|
|
1569 if (hc->free == NULL) {
|
|
|
1570 hc->free = ngx_palloc(c->pool,
|
|
|
1571 cscf->large_client_header_buffers.num * sizeof(ngx_buf_t *));
|
|
|
1572
|
|
|
1573 if (hc->free == NULL) {
|
|
|
1574 ngx_http_close_connection(c);
|
|
|
1575 return;
|
|
|
1576 }
|
|
|
1577 }
|
|
|
1578
|
|
|
1579 for (i = 0; i < hc->nbusy - 1; i++) {
|
|
|
1580 f = hc->busy[i];
|
|
|
1581 hc->free[hc->nfree++] = f;
|
|
|
1582 f->pos = f->start;
|
|
|
1583 f->last = f->start;
|
|
|
1584 }
|
|
|
1585
|
|
|
1586 hc->busy[0] = b;
|
|
|
1587 hc->nbusy = 1;
|
|
|
1588 }
|
|
|
1589 }
|
|
|
1590
|
|
|
1591 ngx_http_close_request(r, 0);
|
|
|
1592 c->data = hc;
|
|
|
1593
|
|
|
1594 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1595 ngx_add_timer(rev, clcf->keepalive_timeout);
|
|
|
1596
|
|
|
1597 if (ngx_handle_level_read_event(rev) == NGX_ERROR) {
|
|
|
1598 ngx_http_close_connection(c);
|
|
|
1599 return;
|
|
|
1600 }
|
|
|
1601
|
|
|
1602 wev = c->write;
|
|
|
1603 wev->event_handler = ngx_http_empty_handler;
|
|
|
1604
|
|
|
1605 if (b->pos < b->last) {
|
|
|
1606
|
|
|
1607 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "pipelined request");
|
|
|
1608
|
|
|
1609 hc->pipeline = 1;
|
|
|
1610 ctx->action = "reading client pipelined request line";
|
|
|
1611 ngx_http_init_request(rev);
|
|
|
1612 return;
|
|
|
1613 }
|
|
|
1614
|
|
|
1615 hc->pipeline = 0;
|
|
|
1616
|
|
|
1617 if (ngx_pfree(c->pool, r) == NGX_OK) {
|
|
|
1618 hc->request = NULL;
|
|
|
1619 }
|
|
|
1620
|
|
|
1621 b = c->buffer;
|
|
|
1622
|
|
|
1623 if (ngx_pfree(c->pool, b->start) == NGX_OK) {
|
|
|
1624 b->pos = NULL;
|
|
|
1625
|
|
|
1626 } else {
|
|
|
1627 b->pos = b->start;
|
|
|
1628 b->last = b->start;
|
|
|
1629 }
|
|
|
1630
|
|
|
1631 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "hc free: " PTR_FMT " %d",
|
|
|
1632 hc->free, hc->nfree);
|
|
|
1633
|
|
|
1634 if (hc->free) {
|
|
|
1635 for (i = 0; i < hc->nfree; i++) {
|
|
|
1636 ngx_pfree(c->pool, hc->free[i]);
|
|
|
1637 hc->free[i] = NULL;
|
|
|
1638 }
|
|
|
1639
|
|
|
1640 hc->nfree = 0;
|
|
|
1641 }
|
|
|
1642
|
|
|
1643 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "hc busy: " PTR_FMT " %d",
|
|
|
1644 hc->busy, hc->nbusy);
|
|
|
1645
|
|
|
1646 if (hc->busy) {
|
|
|
1647 for (i = 0; i < hc->nbusy; i++) {
|
|
|
1648 ngx_pfree(c->pool, hc->busy[i]);
|
|
|
1649 hc->busy[i] = NULL;
|
|
|
1650 }
|
|
|
1651
|
|
|
1652 hc->nbusy = 0;
|
|
|
1653 }
|
|
|
1654
|
|
|
1655 rev->event_handler = ngx_http_keepalive_handler;
|
|
|
1656
|
|
|
1657 if (wev->active) {
|
|
|
1658 if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) {
|
|
|
1659 if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_DISABLE_EVENT)
|
|
|
1660 == NGX_ERROR)
|
|
|
1661 {
|
|
|
1662 ngx_http_close_connection(c);
|
|
|
1663 return;
|
|
|
1664 }
|
|
|
1665
|
|
|
1666 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
|
|
|
1667 if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
|
|
|
1668 ngx_http_close_connection(c);
|
|
|
1669 return;
|
|
|
1670 }
|
|
|
1671 }
|
|
|
1672 }
|
|
|
1673
|
|
|
1674 ctx->action = "keepalive";
|
|
|
1675
|
|
|
1676 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
1677 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
1678 ngx_connection_error(c, ngx_socket_errno, ngx_tcp_push_n " failed");
|
|
|
1679 ngx_http_close_connection(c);
|
|
|
1680 return;
|
|
|
1681 }
|
|
2
|
1682
|
|
0
|
1683 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
2
|
1684
|
|
|
1685 } else {
|
|
|
1686 if (clcf->tcp_nodelay && !c->tcp_nodelay) {
|
|
|
1687 tcp_nodelay = 1;
|
|
|
1688
|
|
|
1689 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1690
|
|
|
1691 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1692 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1693 {
|
|
|
1694 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1695 "setsockopt(TCP_NODELAY) failed");
|
|
|
1696 ngx_http_close_connection(c);
|
|
|
1697 return;
|
|
|
1698 }
|
|
|
1699
|
|
|
1700 c->tcp_nodelay = 1;
|
|
|
1701 }
|
|
0
|
1702 }
|
|
|
1703
|
|
|
1704 #if 0
|
|
|
1705 /* if "keepalive_buffers off" then we need some other place */
|
|
|
1706 r->http_state = NGX_HTTP_KEEPALIVE_STATE;
|
|
|
1707 #endif
|
|
|
1708
|
|
|
1709 if (rev->ready) {
|
|
|
1710 ngx_http_keepalive_handler(rev);
|
|
|
1711 }
|
|
|
1712 }
|
|
|
1713
|
|
|
1714
|
|
|
1715 static void ngx_http_keepalive_handler(ngx_event_t *rev)
|
|
|
1716 {
|
|
|
1717 size_t size;
|
|
|
1718 ssize_t n;
|
|
|
1719 ngx_buf_t *b;
|
|
|
1720 ngx_connection_t *c;
|
|
|
1721 ngx_http_log_ctx_t *ctx;
|
|
|
1722 ngx_http_connection_t *hc;
|
|
|
1723
|
|
|
1724 c = rev->data;
|
|
|
1725
|
|
|
1726 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http keepalive handler");
|
|
|
1727
|
|
|
1728 if (rev->timedout) {
|
|
|
1729 ngx_http_close_connection(c);
|
|
|
1730 return;
|
|
|
1731 }
|
|
|
1732
|
|
|
1733 ctx = (ngx_http_log_ctx_t *) rev->log->data;
|
|
|
1734
|
|
|
1735 #if (HAVE_KQUEUE)
|
|
|
1736
|
|
|
1737 if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) {
|
|
|
1738 if (rev->pending_eof) {
|
|
|
1739 ngx_log_error(NGX_LOG_INFO, c->log, rev->kq_errno,
|
|
|
1740 "kevent() reported that client %s closed "
|
|
|
1741 "keepalive connection", ctx->client);
|
|
|
1742 ngx_http_close_connection(c);
|
|
|
1743 return;
|
|
|
1744 }
|
|
|
1745 }
|
|
|
1746
|
|
|
1747 #endif
|
|
|
1748
|
|
|
1749 hc = c->data;
|
|
|
1750 b = c->buffer;
|
|
|
1751 size = b->end - b->start;
|
|
|
1752
|
|
|
1753 if (b->pos == NULL) {
|
|
|
1754 if (!(b->pos = ngx_palloc(c->pool, size))) {
|
|
|
1755 ngx_http_close_connection(c);
|
|
|
1756 return;
|
|
|
1757 }
|
|
|
1758
|
|
|
1759 b->start = b->pos;
|
|
|
1760 b->last = b->pos;
|
|
|
1761 b->end = b->pos + size;
|
|
|
1762 }
|
|
|
1763
|
|
|
1764 /*
|
|
|
1765 * MSIE closes a keepalive connection with RST flag
|
|
|
1766 * so we ignore ECONNRESET here.
|
|
|
1767 */
|
|
|
1768
|
|
|
1769 c->log_error = NGX_ERROR_IGNORE_ECONNRESET;
|
|
|
1770 ngx_set_socket_errno(0);
|
|
|
1771
|
|
|
1772 n = c->recv(c, b->last, size);
|
|
|
1773 c->log_error = NGX_ERROR_INFO;
|
|
|
1774
|
|
|
1775 if (n == NGX_AGAIN) {
|
|
|
1776 return;
|
|
|
1777 }
|
|
|
1778
|
|
|
1779 if (n == NGX_ERROR) {
|
|
|
1780 ngx_http_close_connection(c);
|
|
|
1781 return;
|
|
|
1782 }
|
|
|
1783
|
|
|
1784 rev->log->handler = NULL;
|
|
|
1785
|
|
|
1786 if (n == 0) {
|
|
|
1787 ngx_log_error(NGX_LOG_INFO, c->log, ngx_socket_errno,
|
|
|
1788 "client %s closed keepalive connection", ctx->client);
|
|
|
1789 ngx_http_close_connection(c);
|
|
|
1790 return;
|
|
|
1791 }
|
|
|
1792
|
|
|
1793 b->last += n;
|
|
|
1794 rev->log->handler = ngx_http_log_error;
|
|
|
1795 ctx->action = "reading client request line";
|
|
|
1796
|
|
|
1797 ngx_http_init_request(rev);
|
|
|
1798 }
|
|
|
1799
|
|
|
1800
|
|
|
1801 static void ngx_http_set_lingering_close(ngx_http_request_t *r)
|
|
|
1802 {
|
|
|
1803 ngx_event_t *rev, *wev;
|
|
|
1804 ngx_connection_t *c;
|
|
|
1805 ngx_http_core_loc_conf_t *clcf;
|
|
|
1806
|
|
|
1807 c = r->connection;
|
|
|
1808
|
|
|
1809 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1810
|
|
|
1811 rev = c->read;
|
|
|
1812 rev->event_handler = ngx_http_lingering_close_handler;
|
|
|
1813
|
|
|
1814 r->lingering_time = ngx_time() + clcf->lingering_time / 1000;
|
|
|
1815 ngx_add_timer(rev, clcf->lingering_timeout);
|
|
|
1816
|
|
|
1817 if (ngx_handle_level_read_event(rev) == NGX_ERROR) {
|
|
|
1818 ngx_http_close_request(r, 0);
|
|
|
1819 ngx_http_close_connection(c);
|
|
|
1820 return;
|
|
|
1821 }
|
|
|
1822
|
|
|
1823 wev = c->write;
|
|
|
1824 wev->event_handler = ngx_http_empty_handler;
|
|
|
1825
|
|
|
1826 if (wev->active) {
|
|
|
1827 if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) {
|
|
|
1828 if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_DISABLE_EVENT)
|
|
|
1829 == NGX_ERROR)
|
|
|
1830 {
|
|
|
1831 ngx_http_close_connection(c);
|
|
|
1832 return;
|
|
|
1833 }
|
|
|
1834
|
|
|
1835 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
|
|
|
1836 if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
|
|
|
1837 ngx_http_close_connection(c);
|
|
|
1838 return;
|
|
|
1839 }
|
|
|
1840 }
|
|
|
1841 }
|
|
|
1842
|
|
|
1843 if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) {
|
|
|
1844 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1845 ngx_shutdown_socket_n " failed");
|
|
|
1846 ngx_http_close_request(r, 0);
|
|
|
1847 ngx_http_close_connection(c);
|
|
|
1848 return;
|
|
|
1849 }
|
|
|
1850
|
|
|
1851 if (rev->ready) {
|
|
|
1852 ngx_http_lingering_close_handler(rev);
|
|
|
1853 }
|
|
|
1854 }
|
|
|
1855
|
|
|
1856
|
|
|
1857 static void ngx_http_lingering_close_handler(ngx_event_t *rev)
|
|
|
1858 {
|
|
|
1859 ssize_t n;
|
|
|
1860 ngx_msec_t timer;
|
|
|
1861 ngx_connection_t *c;
|
|
|
1862 ngx_http_request_t *r;
|
|
|
1863 ngx_http_core_loc_conf_t *clcf;
|
|
|
1864 u_char buffer[NGX_HTTP_LINGERING_BUFFER_SIZE];
|
|
|
1865
|
|
|
1866 c = rev->data;
|
|
|
1867 r = c->data;
|
|
|
1868
|
|
|
1869 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1870 "http lingering close handler");
|
|
|
1871
|
|
|
1872 if (rev->timedout) {
|
|
|
1873 ngx_http_close_request(r, 0);
|
|
|
1874 ngx_http_close_connection(c);
|
|
|
1875 return;
|
|
|
1876 }
|
|
|
1877
|
|
|
1878 timer = r->lingering_time - ngx_time();
|
|
|
1879 if (timer <= 0) {
|
|
|
1880 ngx_http_close_request(r, 0);
|
|
|
1881 ngx_http_close_connection(c);
|
|
|
1882 return;
|
|
|
1883 }
|
|
|
1884
|
|
|
1885 do {
|
|
|
1886 n = c->recv(c, buffer, NGX_HTTP_LINGERING_BUFFER_SIZE);
|
|
|
1887
|
|
|
1888 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "lingering read: %d", n);
|
|
|
1889
|
|
|
1890 if (n == NGX_ERROR || n == 0) {
|
|
|
1891 ngx_http_close_request(r, 0);
|
|
|
1892 ngx_http_close_connection(c);
|
|
|
1893 return;
|
|
|
1894 }
|
|
|
1895
|
|
|
1896 } while (rev->ready);
|
|
|
1897
|
|
|
1898 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1899
|
|
|
1900 timer *= 1000;
|
|
|
1901
|
|
|
1902 if (timer > clcf->lingering_timeout) {
|
|
|
1903 timer = clcf->lingering_timeout;
|
|
|
1904 }
|
|
|
1905
|
|
|
1906 ngx_add_timer(rev, timer);
|
|
|
1907
|
|
|
1908 return;
|
|
|
1909 }
|
|
|
1910
|
|
|
1911
|
|
|
1912 void ngx_http_empty_handler(ngx_event_t *wev)
|
|
|
1913 {
|
|
|
1914 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, "http empty handler");
|
|
|
1915
|
|
|
1916 return;
|
|
|
1917 }
|
|
|
1918
|
|
|
1919
|
|
|
1920 ngx_int_t ngx_http_send_last(ngx_http_request_t *r)
|
|
|
1921 {
|
|
|
1922 ngx_buf_t *b;
|
|
|
1923 ngx_chain_t out;
|
|
|
1924
|
|
|
1925 if (!(b = ngx_calloc_buf(r->pool))) {
|
|
|
1926 return NGX_ERROR;
|
|
|
1927 }
|
|
|
1928
|
|
|
1929 b->last_buf = 1;
|
|
|
1930 out.buf = b;
|
|
|
1931 out.next = NULL;
|
|
|
1932
|
|
|
1933 return ngx_http_output_filter(r, &out);
|
|
|
1934 }
|
|
|
1935
|
|
|
1936
|
|
|
1937 void ngx_http_close_request(ngx_http_request_t *r, int error)
|
|
|
1938 {
|
|
|
1939 ngx_uint_t i;
|
|
|
1940 ngx_log_t *log;
|
|
|
1941 ngx_http_log_ctx_t *ctx;
|
|
|
1942 ngx_http_cleanup_t *cleanup;
|
|
|
1943 ngx_http_core_loc_conf_t *clcf;
|
|
|
1944 struct linger l;
|
|
|
1945
|
|
|
1946 log = r->connection->log;
|
|
|
1947
|
|
|
1948 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http close request");
|
|
|
1949
|
|
|
1950 if (r->pool == NULL) {
|
|
|
1951 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
|
1952 "http request already closed");
|
|
|
1953 return;
|
|
|
1954 }
|
|
|
1955
|
|
|
1956 #if (NGX_STAT_STUB)
|
|
|
1957 if (r->stat_reading) {
|
|
|
1958 (*ngx_stat_reading)--;
|
|
|
1959 }
|
|
|
1960
|
|
|
1961 if (r->stat_writing) {
|
|
|
1962 (*ngx_stat_writing)--;
|
|
|
1963 }
|
|
|
1964 #endif
|
|
|
1965
|
|
|
1966 if (error && r->headers_out.status == 0) {
|
|
|
1967 r->headers_out.status = error;
|
|
|
1968 }
|
|
|
1969
|
|
|
1970 ngx_http_log_handler(r);
|
|
|
1971
|
|
|
1972 cleanup = r->cleanup.elts;
|
|
|
1973 for (i = 0; i < r->cleanup.nelts; i++) {
|
|
|
1974 if (!cleanup[i].valid) {
|
|
|
1975 continue;
|
|
|
1976 }
|
|
|
1977
|
|
|
1978 #if (NGX_HTTP_CACHE)
|
|
|
1979
|
|
|
1980 if (cleanup[i].cache) {
|
|
|
1981 ngx_http_cache_unlock(cleanup[i].data.cache.hash,
|
|
|
1982 cleanup[i].data.cache.cache, log);
|
|
|
1983 continue;
|
|
|
1984 }
|
|
|
1985
|
|
|
1986 #endif
|
|
|
1987
|
|
|
1988 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http cleanup fd: %d",
|
|
|
1989 cleanup[i].data.file.fd);
|
|
|
1990
|
|
|
1991 if (ngx_close_file(cleanup[i].data.file.fd) == NGX_FILE_ERROR) {
|
|
|
1992 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
1993 ngx_close_file_n " \"%s\" failed",
|
|
|
1994 cleanup[i].data.file.name);
|
|
|
1995 }
|
|
|
1996 }
|
|
|
1997
|
|
|
1998 /* STUB */
|
|
|
1999 if (r->file.fd != NGX_INVALID_FILE) {
|
|
|
2000 if (ngx_close_file(r->file.fd) == NGX_FILE_ERROR) {
|
|
|
2001 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
2002 ngx_close_file_n " \"%s\" failed", r->file.name.data);
|
|
|
2003 }
|
|
|
2004 }
|
|
|
2005
|
|
|
2006 if (r->request_body
|
|
|
2007 && r->request_body->temp_file
|
|
|
2008 && r->request_body->temp_file->file.fd != NGX_INVALID_FILE)
|
|
|
2009 {
|
|
|
2010 if (ngx_close_file(r->request_body->temp_file->file.fd)
|
|
|
2011 == NGX_FILE_ERROR)
|
|
|
2012 {
|
|
|
2013 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
|
2014 ngx_close_file_n " deleted file \"%s\" failed",
|
|
|
2015 r->request_body->temp_file->file.name.data);
|
|
|
2016 }
|
|
|
2017 }
|
|
|
2018
|
|
|
2019 if (r->connection->timedout) {
|
|
|
2020 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2021
|
|
|
2022 if (clcf->reset_timedout_connection) {
|
|
|
2023 l.l_onoff = 1;
|
|
|
2024 l.l_linger = 0;
|
|
|
2025
|
|
|
2026 if (setsockopt(r->connection->fd, SOL_SOCKET, SO_LINGER,
|
|
|
2027 (const void *) &l, sizeof(struct linger)) == -1)
|
|
|
2028 {
|
|
|
2029 ngx_log_error(NGX_LOG_ALERT, log, ngx_socket_errno,
|
|
|
2030 "setsockopt(SO_LINGER) failed");
|
|
|
2031 }
|
|
|
2032 }
|
|
|
2033 }
|
|
|
2034
|
|
|
2035 /* ctx->url was allocated from r->pool */
|
|
|
2036 ctx = log->data;
|
|
|
2037 ctx->url = NULL;
|
|
|
2038
|
|
|
2039 r->request_line.len = 0;
|
|
|
2040
|
|
|
2041 ngx_destroy_pool(r->pool);
|
|
|
2042
|
|
|
2043 return;
|
|
|
2044 }
|
|
|
2045
|
|
|
2046
|
|
|
2047 #if (NGX_HTTP_SSL)
|
|
|
2048
|
|
|
2049 void ngx_ssl_close_handler(ngx_event_t *ev)
|
|
|
2050 {
|
|
|
2051 ngx_connection_t *c;
|
|
|
2052
|
|
|
2053 c = ev->data;
|
|
|
2054
|
|
|
2055 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, "http ssl close handler");
|
|
|
2056
|
|
|
2057 if (ngx_ssl_shutdown(c) == NGX_AGAIN) {
|
|
|
2058 return;
|
|
|
2059 }
|
|
|
2060
|
|
|
2061 ngx_http_close_connection(c);
|
|
|
2062 }
|
|
|
2063
|
|
|
2064 #endif
|
|
|
2065
|
|
|
2066
|
|
|
2067 void ngx_http_close_connection(ngx_connection_t *c)
|
|
|
2068 {
|
|
|
2069 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2070 "close http connection: %d", c->fd);
|
|
|
2071
|
|
2
|
2072 #if (NGX_OPENSSL)
|
|
|
2073
|
|
|
2074 if (c->ssl) {
|
|
|
2075 if (ngx_ssl_shutdown(c) == NGX_AGAIN) {
|
|
|
2076 c->read->event_handler = ngx_ssl_close_handler;
|
|
|
2077 c->write->event_handler = ngx_ssl_close_handler;
|
|
|
2078 return;
|
|
|
2079 }
|
|
|
2080 }
|
|
|
2081
|
|
|
2082 #endif
|
|
|
2083
|
|
0
|
2084 #if (NGX_STAT_STUB)
|
|
|
2085 (*ngx_stat_active)--;
|
|
|
2086 #endif
|
|
|
2087
|
|
|
2088 ngx_close_connection(c);
|
|
|
2089 }
|
|
|
2090
|
|
|
2091
|
|
|
2092 static void ngx_http_client_error(ngx_http_request_t *r,
|
|
|
2093 int client_error, int error)
|
|
|
2094 {
|
|
|
2095 ngx_http_log_ctx_t *ctx;
|
|
|
2096 ngx_http_core_srv_conf_t *cscf;
|
|
|
2097
|
|
|
2098 ctx = r->connection->log->data;
|
|
|
2099
|
|
|
2100 if (error == NGX_HTTP_REQUEST_TIME_OUT) {
|
|
|
2101 ngx_log_error(NGX_LOG_INFO, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2102 "client timed out");
|
|
|
2103 r->connection->timedout = 1;
|
|
|
2104 ngx_http_close_request(r, error);
|
|
|
2105 ngx_http_close_connection(r->connection);
|
|
|
2106 return;
|
|
|
2107 }
|
|
|
2108
|
|
|
2109 r->connection->log->handler = NULL;
|
|
|
2110
|
|
|
2111 if (ctx->url) {
|
|
|
2112 switch (client_error) {
|
|
|
2113
|
|
|
2114 case NGX_HTTP_PARSE_INVALID_HOST:
|
|
|
2115 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
2116 client_header_errors[client_error - NGX_HTTP_CLIENT_ERROR],
|
|
|
2117 ctx->client, r->headers_in.host->value.data, ctx->url);
|
|
|
2118
|
|
|
2119 error = NGX_HTTP_INVALID_HOST;
|
|
|
2120
|
|
|
2121 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
2122
|
|
|
2123 if (cscf->restrict_host_names == NGX_HTTP_RESTRICT_HOST_CLOSE) {
|
|
|
2124 ngx_http_close_request(r, error);
|
|
|
2125 ngx_http_close_connection(r->connection);
|
|
|
2126 return;
|
|
|
2127 }
|
|
|
2128
|
|
|
2129 break;
|
|
|
2130
|
|
|
2131 case NGX_HTTP_PARSE_HTTP_TO_HTTPS:
|
|
|
2132 error = NGX_HTTP_TO_HTTPS;
|
|
|
2133
|
|
|
2134 /* fall through */
|
|
|
2135
|
|
|
2136 default:
|
|
|
2137 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
2138 client_header_errors[client_error - NGX_HTTP_CLIENT_ERROR],
|
|
|
2139 ctx->client, ctx->url);
|
|
|
2140 }
|
|
|
2141
|
|
|
2142 } else {
|
|
|
2143 if (error == NGX_HTTP_REQUEST_URI_TOO_LARGE) {
|
|
|
2144 r->request_line.len = r->header_in->end - r->request_start;
|
|
|
2145 r->request_line.data = r->request_start;
|
|
|
2146 }
|
|
|
2147
|
|
|
2148 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
2149 client_header_errors[client_error - NGX_HTTP_CLIENT_ERROR],
|
|
|
2150 ctx->client);
|
|
|
2151 }
|
|
|
2152
|
|
|
2153 r->connection->log->handler = ngx_http_log_error;
|
|
|
2154
|
|
|
2155 ngx_http_finalize_request(r, error);
|
|
|
2156 }
|
|
|
2157
|
|
|
2158
|
|
|
2159 static size_t ngx_http_log_error(void *data, char *buf, size_t len)
|
|
|
2160 {
|
|
|
2161 ngx_http_log_ctx_t *ctx = data;
|
|
|
2162
|
|
|
2163 if (ctx->action && ctx->url) {
|
|
|
2164 return ngx_snprintf(buf, len, " while %s, client: %s, URL: %s",
|
|
|
2165 ctx->action, ctx->client, ctx->url);
|
|
|
2166
|
|
|
2167 } else if (ctx->action == NULL && ctx->url) {
|
|
|
2168 return ngx_snprintf(buf, len, ", client: %s, URL: %s",
|
|
|
2169 ctx->client, ctx->url);
|
|
|
2170
|
|
|
2171 } else {
|
|
|
2172 return ngx_snprintf(buf, len, " while %s, client: %s",
|
|
|
2173 ctx->action, ctx->client);
|
|
|
2174 }
|
|
|
2175 }
|
