| |
| /* |
| * Copyright (C) Igor Sysoev |
| */ |
| |
| |
| #include <ngx_config.h> |
| #include <ngx_core.h> |
| #include <ngx_event.h> |
| #include <ngx_http.h> |
| |
| |
| static void ngx_http_init_request(ngx_event_t *ev); |
| static void ngx_http_process_request_line(ngx_event_t *rev); |
| static void ngx_http_process_request_headers(ngx_event_t *rev); |
| static ssize_t ngx_http_read_request_header(ngx_http_request_t *r); |
| static ngx_int_t ngx_http_alloc_large_header_buffer(ngx_http_request_t *r, |
| ngx_uint_t request_line); |
| |
| static ngx_int_t ngx_http_process_header_line(ngx_http_request_t *r, |
| ngx_table_elt_t *h, ngx_uint_t offset); |
| static ngx_int_t ngx_http_process_unique_header_line(ngx_http_request_t *r, |
| ngx_table_elt_t *h, ngx_uint_t offset); |
| static ngx_int_t ngx_http_process_cookie(ngx_http_request_t *r, |
| ngx_table_elt_t *h, ngx_uint_t offset); |
| |
| static ngx_int_t ngx_http_process_request_header(ngx_http_request_t *r); |
| static ngx_int_t ngx_http_find_virtual_server(ngx_http_request_t *r); |
| |
| static void ngx_http_request_handler(ngx_event_t *ev); |
| static ngx_int_t ngx_http_set_write_handler(ngx_http_request_t *r); |
| static void ngx_http_writer(ngx_http_request_t *r); |
| static ngx_int_t ngx_http_postponed_handler(ngx_http_request_t *r); |
| |
| static void ngx_http_block_read(ngx_http_request_t *r); |
| static void ngx_http_read_discarded_body_handler(ngx_http_request_t *r); |
| static ngx_int_t ngx_http_read_discarded_body(ngx_http_request_t *r); |
| |
| static void ngx_http_set_keepalive(ngx_http_request_t *r); |
| static void ngx_http_keepalive_handler(ngx_event_t *ev); |
| static void ngx_http_set_lingering_close(ngx_http_request_t *r); |
| static void ngx_http_lingering_close_handler(ngx_event_t *ev); |
| static void ngx_http_close_request(ngx_http_request_t *r, ngx_int_t error); |
| static void ngx_http_close_connection(ngx_connection_t *c); |
| |
| static u_char *ngx_http_log_error(ngx_log_t *log, u_char *buf, size_t len); |
| static u_char *ngx_http_log_error_handler(ngx_http_request_t *r, u_char *buf, |
| size_t len); |
| |
| #if (NGX_HTTP_SSL) |
| static void ngx_http_ssl_handshake(ngx_event_t *rev); |
| static void ngx_http_ssl_handshake_handler(ngx_connection_t *c); |
| static void ngx_http_ssl_close_handler(ngx_event_t *ev); |
| #endif |
| |
| |
| static char *ngx_http_client_errors[] = { |
| |
| /* NGX_HTTP_PARSE_INVALID_METHOD */ |
| "client sent invalid method", |
| |
| /* NGX_HTTP_PARSE_INVALID_REQUEST */ |
| "client sent invalid request", |
| |
| /* NGX_HTTP_PARSE_INVALID_09_METHOD */ |
| "client sent invalid method in HTTP/0.9 request" |
| }; |
| |
| |
| ngx_http_header_t ngx_http_headers_in[] = { |
| { ngx_string("Host"), offsetof(ngx_http_headers_in_t, host), |
| ngx_http_process_unique_header_line }, |
| |
| { ngx_string("Connection"), offsetof(ngx_http_headers_in_t, connection), |
| ngx_http_process_unique_header_line }, |
| |
| { ngx_string("If-Modified-Since"), |
| offsetof(ngx_http_headers_in_t, if_modified_since), |
| ngx_http_process_header_line }, |
| |
| { ngx_string("User-Agent"), offsetof(ngx_http_headers_in_t, user_agent), |
| ngx_http_process_header_line }, |
| |
| { ngx_string("Referer"), offsetof(ngx_http_headers_in_t, referer), |
| ngx_http_process_header_line }, |
| |
| { ngx_string("Content-Length"), |
| offsetof(ngx_http_headers_in_t, content_length), |
| ngx_http_process_unique_header_line }, |
| |
| { ngx_string("Content-Type"), |
| offsetof(ngx_http_headers_in_t, content_type), |
| ngx_http_process_header_line }, |
| |
| { ngx_string("Range"), offsetof(ngx_http_headers_in_t, range), |
| ngx_http_process_header_line }, |
| |
| #if (NGX_HTTP_GZIP) |
| { ngx_string("Accept-Encoding"), |
| offsetof(ngx_http_headers_in_t, accept_encoding), |
| ngx_http_process_header_line }, |
| |
| { ngx_string("Via"), offsetof(ngx_http_headers_in_t, via), |
| ngx_http_process_header_line }, |
| #endif |
| |
| { ngx_string("Authorization"), |
| offsetof(ngx_http_headers_in_t, authorization), |
| ngx_http_process_unique_header_line }, |
| |
| { ngx_string("Keep-Alive"), offsetof(ngx_http_headers_in_t, keep_alive), |
| ngx_http_process_header_line }, |
| |
| #if (NGX_HTTP_PROXY) |
| { ngx_string("X-Forwarded-For"), |
| offsetof(ngx_http_headers_in_t, x_forwarded_for), |
| ngx_http_process_header_line }, |
| #endif |
| |
| #if (NGX_HTTP_HEADERS) |
| { ngx_string("Accept"), offsetof(ngx_http_headers_in_t, accept), |
| ngx_http_process_header_line }, |
| |
| { ngx_string("Accept-Language"), |
| offsetof(ngx_http_headers_in_t, accept_language), |
| ngx_http_process_header_line }, |
| #endif |
| |
| { ngx_string("Cookie"), 0, ngx_http_process_cookie }, |
| |
| { ngx_null_string, 0, NULL } |
| }; |
| |
| |
| void |
| ngx_http_init_connection(ngx_connection_t *c) |
| { |
| ngx_event_t *rev; |
| ngx_http_log_ctx_t *ctx; |
| |
| ctx = ngx_palloc(c->pool, sizeof(ngx_http_log_ctx_t)); |
| if (ctx == NULL) { |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| ctx->client = &c->addr_text; |
| ctx->request = NULL; |
| |
| c->log->connection = c->number; |
| c->log->handler = ngx_http_log_error; |
| c->log->data = ctx; |
| c->log->action = "reading client request line"; |
| |
| c->log_error = NGX_ERROR_INFO; |
| |
| rev = c->read; |
| rev->handler = ngx_http_init_request; |
| |
| /* STUB: epoll edge */ c->write->handler = ngx_http_empty_handler; |
| |
| if (rev->ready) { |
| /* the deferred accept(), rtsig, aio, iocp */ |
| |
| if (ngx_accept_mutex) { |
| if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) { |
| |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| ngx_post_event(rev); |
| |
| ngx_mutex_unlock(ngx_posted_events_mutex); |
| |
| #if (NGX_STAT_STUB) |
| ngx_atomic_inc(ngx_stat_reading); |
| #endif |
| return; |
| } |
| |
| #if (NGX_STAT_STUB) |
| ngx_atomic_inc(ngx_stat_reading); |
| #endif |
| |
| ngx_http_init_request(rev); |
| return; |
| } |
| |
| ngx_add_timer(rev, c->listening->post_accept_timeout); |
| |
| if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| #if (NGX_STAT_STUB) |
| ngx_atomic_inc(ngx_stat_reading); |
| #endif |
| |
| } |
| |
| |
| static |
| void ngx_http_init_request(ngx_event_t *rev) |
| { |
| ngx_uint_t i; |
| socklen_t len; |
| struct sockaddr_in sin; |
| ngx_connection_t *c; |
| ngx_http_request_t *r; |
| ngx_http_in_port_t *in_port; |
| ngx_http_in_addr_t *in_addr; |
| ngx_http_log_ctx_t *ctx; |
| ngx_http_connection_t *hc; |
| ngx_http_server_name_t *server_name; |
| ngx_http_core_srv_conf_t *cscf; |
| ngx_http_core_loc_conf_t *clcf; |
| #if (NGX_HTTP_SSL) |
| ngx_http_ssl_srv_conf_t *sscf; |
| #endif |
| |
| c = rev->data; |
| |
| if (rev->timedout) { |
| ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out"); |
| |
| #if (NGX_STAT_STUB) |
| ngx_atomic_dec(ngx_stat_reading); |
| #endif |
| |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| hc = c->data; |
| |
| if (hc) { |
| |
| #if (NGX_STAT_STUB) |
| ngx_atomic_inc(ngx_stat_reading); |
| #endif |
| |
| } else { |
| hc = ngx_pcalloc(c->pool, sizeof(ngx_http_connection_t)); |
| if (hc == NULL) { |
| |
| #if (NGX_STAT_STUB) |
| ngx_atomic_dec(ngx_stat_reading); |
| #endif |
| |
| ngx_http_close_connection(c); |
| return; |
| } |
| } |
| |
| r = hc->request; |
| |
| if (r) { |
| ngx_memzero(r, sizeof(ngx_http_request_t)); |
| |
| r->pipeline = hc->pipeline; |
| |
| if (hc->nbusy) { |
| r->header_in = hc->busy[0]; |
| } |
| |
| } else { |
| r = ngx_pcalloc(c->pool, sizeof(ngx_http_request_t)); |
| if (r == NULL) { |
| |
| #if (NGX_STAT_STUB) |
| ngx_atomic_dec(ngx_stat_reading); |
| #endif |
| |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| hc->request = r; |
| } |
| |
| #if (NGX_STAT_STUB) |
| ngx_atomic_dec(ngx_stat_reading); |
| #endif |
| |
| c->data = r; |
| r->http_connection = hc; |
| |
| c->sent = 0; |
| r->signature = NGX_HTTP_MODULE; |
| |
| /* find the server configuration for the address:port */ |
| |
| /* AF_INET only */ |
| |
| in_port = c->servers; |
| in_addr = in_port->addrs.elts; |
| |
| r->port = in_port->port; |
| r->port_text = &in_port->port_text; |
| |
| i = 0; |
| |
| if (in_port->addrs.nelts > 1) { |
| |
| /* |
| * There are several addresses on this port and one of them |
| * is the "*:port" wildcard so getsockname() is needed to determine |
| * the server address. |
| * |
| * AcceptEx() already gave this address. |
| */ |
| |
| #if (NGX_WIN32) |
| if (c->local_sockaddr) { |
| r->in_addr = |
| ((struct sockaddr_in *) c->local_sockaddr)->sin_addr.s_addr; |
| |
| } else |
| #endif |
| { |
| len = sizeof(struct sockaddr_in); |
| if (getsockname(c->fd, (struct sockaddr *) &sin, &len) == -1) { |
| ngx_connection_error(c, ngx_socket_errno, |
| "getsockname() failed"); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| r->in_addr = sin.sin_addr.s_addr; |
| } |
| |
| /* the last in_port->addrs address is "*" */ |
| |
| for ( /* void */ ; i < in_port->addrs.nelts - 1; i++) { |
| if (in_addr[i].addr == r->in_addr) { |
| break; |
| } |
| } |
| |
| } else { |
| r->in_addr = in_addr[0].addr; |
| } |
| |
| r->virtual_names = &in_addr[i]; |
| |
| /* the default server configuration for the address:port */ |
| cscf = in_addr[i].core_srv_conf; |
| |
| r->main_conf = cscf->ctx->main_conf; |
| r->srv_conf = cscf->ctx->srv_conf; |
| r->loc_conf = cscf->ctx->loc_conf; |
| |
| rev->handler = ngx_http_process_request_line; |
| |
| #if (NGX_HTTP_SSL) |
| |
| sscf = ngx_http_get_module_srv_conf(r, ngx_http_ssl_module); |
| if (sscf->enable) { |
| |
| if (c->ssl == NULL) { |
| if (ngx_ssl_create_connection(&sscf->ssl, c, NGX_SSL_BUFFER) |
| == NGX_ERROR) |
| { |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| rev->handler = ngx_http_ssl_handshake; |
| } |
| |
| r->main_filter_need_in_memory = 1; |
| } |
| |
| #endif |
| |
| server_name = cscf->server_names.elts; |
| r->server_name = server_name->name; |
| |
| clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| c->log->file = clcf->err_log->file; |
| if (!(c->log->log_level & NGX_LOG_DEBUG_CONNECTION)) { |
| c->log->log_level = clcf->err_log->log_level; |
| } |
| |
| if (c->buffer == NULL) { |
| c->buffer = ngx_create_temp_buf(c->pool, |
| cscf->client_header_buffer_size); |
| if (c->buffer == NULL) { |
| ngx_http_close_connection(c); |
| return; |
| } |
| } |
| |
| if (r->header_in == NULL) { |
| r->header_in = c->buffer; |
| } |
| |
| r->pool = ngx_create_pool(cscf->request_pool_size, c->log); |
| if (r->pool == NULL) { |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| |
| if (ngx_list_init(&r->headers_out.headers, r->pool, 20, |
| sizeof(ngx_table_elt_t)) == NGX_ERROR) |
| { |
| ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| |
| r->ctx = ngx_pcalloc(r->pool, sizeof(void *) * ngx_http_max_module); |
| if (r->ctx == NULL) { |
| ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| c->single_connection = 1; |
| r->connection = c; |
| |
| r->main = r; |
| |
| r->start_time = ngx_time(); |
| |
| r->headers_in.content_length_n = -1; |
| r->headers_in.keep_alive_n = -1; |
| r->headers_out.content_length_n = -1; |
| r->headers_out.last_modified_time = -1; |
| |
| r->http_state = NGX_HTTP_READING_REQUEST_STATE; |
| |
| ctx = c->log->data; |
| ctx->request = r; |
| r->log_handler = ngx_http_log_error_handler; |
| |
| #if (NGX_STAT_STUB) |
| ngx_atomic_inc(ngx_stat_reading); |
| r->stat_reading = 1; |
| ngx_atomic_inc(ngx_stat_requests); |
| #endif |
| |
| rev->handler(rev); |
| } |
| |
| |
| #if (NGX_HTTP_SSL) |
| |
| static void |
| ngx_http_ssl_handshake(ngx_event_t *rev) |
| { |
| u_char buf[1]; |
| ssize_t n; |
| ngx_int_t rc; |
| ngx_connection_t *c; |
| ngx_http_request_t *r; |
| |
| c = rev->data; |
| r = c->data; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, |
| "http check ssl handshake"); |
| |
| if (rev->timedout) { |
| ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out"); |
| c->timedout = 1; |
| ngx_http_close_request(r, NGX_HTTP_REQUEST_TIME_OUT); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| n = recv(c->fd, buf, 1, MSG_PEEK); |
| |
| if (n == -1 && ngx_socket_errno == NGX_EAGAIN) { |
| return; |
| } |
| |
| if (n == 1) { |
| if (buf[0] == 0x80 /* SSLv2 */ || buf[0] == 0x16 /* SSLv3/TLSv1 */) { |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, rev->log, 0, |
| "https ssl handshake: 0x%02Xd", buf[0]); |
| |
| rc = ngx_ssl_handshake(c); |
| |
| if (rc == NGX_AGAIN) { |
| c->ssl->handler = ngx_http_ssl_handshake_handler; |
| return; |
| } |
| |
| ngx_http_ssl_handshake_handler(c); |
| |
| return; |
| |
| } else { |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, |
| "plain http"); |
| |
| r->plain_http = 1; |
| } |
| } |
| |
| rev->handler = ngx_http_process_request_line; |
| ngx_http_process_request_line(rev); |
| } |
| |
| |
| static void |
| ngx_http_ssl_handshake_handler(ngx_connection_t *c) |
| { |
| ngx_http_request_t *r; |
| |
| if (c->ssl->handshaked) { |
| |
| /* |
| * The majority of browsers do not send the "close notify" alert. |
| * Among them are MSIE, old Mozilla, Netscape 4, Konqueror, |
| * and Links. And what is more, MSIE ignores the server's alert. |
| * |
| * Opera and recent Mozilla send the alert. |
| */ |
| |
| c->ssl->no_wait_shutdown = 1; |
| |
| c->read->handler = ngx_http_process_request_line; |
| /* STUB: epoll edge */ c->write->handler = ngx_http_empty_handler; |
| |
| ngx_http_process_request_line(c->read); |
| |
| return; |
| } |
| |
| r = c->data; |
| |
| ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST); |
| ngx_http_close_connection(r->connection); |
| |
| return; |
| } |
| |
| |
| #endif |
| |
| |
| static void |
| ngx_http_process_request_line(ngx_event_t *rev) |
| { |
| ssize_t n; |
| ngx_int_t rc, rv; |
| ngx_connection_t *c; |
| ngx_http_request_t *r; |
| ngx_http_log_ctx_t *ctx; |
| |
| c = rev->data; |
| r = c->data; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, |
| "http process request line"); |
| |
| if (rev->timedout) { |
| ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out"); |
| c->timedout = 1; |
| ngx_http_close_request(r, NGX_HTTP_REQUEST_TIME_OUT); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| rc = NGX_AGAIN; |
| |
| for ( ;; ) { |
| |
| if (rc == NGX_AGAIN) { |
| n = ngx_http_read_request_header(r); |
| |
| if (n == NGX_AGAIN || n == NGX_ERROR) { |
| return; |
| } |
| } |
| |
| rc = ngx_http_parse_request_line(r, r->header_in); |
| |
| if (rc == NGX_OK) { |
| |
| /* the request line has been parsed successfully */ |
| |
| r->request_line.len = r->request_end - r->request_start; |
| r->request_line.data = r->request_start; |
| |
| |
| if (r->args_start) { |
| r->uri.len = r->args_start - 1 - r->uri_start; |
| } else { |
| r->uri.len = r->uri_end - r->uri_start; |
| } |
| |
| |
| if (r->complex_uri || r->quoted_uri) { |
| |
| r->uri.data = ngx_palloc(r->pool, r->uri.len + 1); |
| if (r->uri.data == NULL) { |
| ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| rc = ngx_http_parse_complex_uri(r); |
| |
| if (rc == NGX_HTTP_PARSE_INVALID_REQUEST) { |
| ngx_log_error(NGX_LOG_INFO, c->log, 0, |
| "client sent invalid request"); |
| ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST); |
| return; |
| } |
| |
| } else { |
| r->uri.data = r->uri_start; |
| } |
| |
| |
| r->unparsed_uri.len = r->uri_end - r->uri_start; |
| r->unparsed_uri.data = r->uri_start; |
| |
| |
| r->method_name.len = r->method_end - r->request_start + 1; |
| r->method_name.data = r->request_line.data; |
| |
| |
| if (r->http_protocol.data) { |
| r->http_protocol.len = r->request_end - r->http_protocol.data; |
| } |
| |
| |
| if (r->uri_ext) { |
| if (r->args_start) { |
| r->exten.len = r->args_start - 1 - r->uri_ext; |
| } else { |
| r->exten.len = r->uri_end - r->uri_ext; |
| } |
| |
| r->exten.data = r->uri_ext; |
| } |
| |
| |
| if (r->args_start && r->uri_end > r->args_start) { |
| r->args.len = r->uri_end - r->args_start; |
| r->args.data = r->args_start; |
| } |
| |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| "http request line: \"%V\"", &r->request_line); |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| "http uri: \"%V\"", &r->uri); |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| "http args: \"%V\"", &r->args); |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| "http exten: \"%V\"", &r->exten); |
| |
| if (r->http_version < NGX_HTTP_VERSION_10) { |
| |
| if (rev->timer_set) { |
| ngx_del_timer(rev); |
| } |
| |
| #if (NGX_STAT_STUB) |
| ngx_atomic_dec(ngx_stat_reading); |
| r->stat_reading = 0; |
| ngx_atomic_inc(ngx_stat_writing); |
| r->stat_writing = 1; |
| #endif |
| |
| rev->handler = ngx_http_request_handler; |
| c->write->handler = ngx_http_request_handler; |
| r->read_event_handler = ngx_http_block_read; |
| |
| ngx_http_handler(r); |
| |
| return; |
| } |
| |
| |
| if (ngx_list_init(&r->headers_in.headers, r->pool, 20, |
| sizeof(ngx_table_elt_t)) == NGX_ERROR) |
| { |
| ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| |
| if (ngx_array_init(&r->headers_in.cookies, r->pool, 2, |
| sizeof(ngx_table_elt_t *)) == NGX_ERROR) |
| { |
| ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| c->log->action = "reading client request headers"; |
| |
| rev->handler = ngx_http_process_request_headers; |
| ngx_http_process_request_headers(rev); |
| |
| return; |
| } |
| |
| if (rc != NGX_AGAIN) { |
| |
| /* there was error while a request line parsing */ |
| |
| ngx_log_error(NGX_LOG_INFO, c->log, 0, |
| ngx_http_client_errors[rc - NGX_HTTP_CLIENT_ERROR]); |
| ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST); |
| return; |
| } |
| |
| /* NGX_AGAIN: a request line parsing is still incomplete */ |
| |
| if (r->header_in->pos == r->header_in->end) { |
| |
| rv = ngx_http_alloc_large_header_buffer(r, 1); |
| |
| if (rv == NGX_ERROR) { |
| ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| if (rv == NGX_DECLINED) { |
| ctx = c->log->data; |
| ctx->request = r; |
| |
| r->request_line.len = r->header_in->end - r->request_start; |
| r->request_line.data = r->request_start; |
| |
| ngx_log_error(NGX_LOG_INFO, c->log, 0, |
| "client sent too long URI"); |
| ngx_http_finalize_request(r, NGX_HTTP_REQUEST_URI_TOO_LARGE); |
| return; |
| } |
| } |
| } |
| } |
| |
| |
| static void |
| ngx_http_process_request_headers(ngx_event_t *rev) |
| { |
| ssize_t n; |
| ngx_int_t rc, rv; |
| ngx_uint_t key; |
| ngx_str_t header; |
| ngx_table_elt_t *h; |
| ngx_connection_t *c; |
| ngx_http_header_t *hh; |
| ngx_http_request_t *r; |
| ngx_http_core_srv_conf_t *cscf; |
| ngx_http_core_main_conf_t *cmcf; |
| |
| c = rev->data; |
| r = c->data; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, |
| "http process request header line"); |
| |
| if (rev->timedout) { |
| ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out"); |
| c->timedout = 1; |
| ngx_http_close_request(r, NGX_HTTP_REQUEST_TIME_OUT); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); |
| cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module); |
| hh = (ngx_http_header_t *) cmcf->headers_in_hash.buckets; |
| |
| rc = NGX_AGAIN; |
| |
| for ( ;; ) { |
| |
| if (rc == NGX_AGAIN) { |
| |
| if (r->header_in->pos == r->header_in->end) { |
| |
| rv = ngx_http_alloc_large_header_buffer(r, 0); |
| |
| if (rv == NGX_ERROR) { |
| ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| if (rv == NGX_DECLINED) { |
| header.len = r->header_in->end - r->header_name_start; |
| header.data = r->header_name_start; |
| |
| if (header.len > NGX_MAX_ERROR_STR - 300) { |
| header.len = NGX_MAX_ERROR_STR - 300; |
| header.data[header.len++] = '.'; |
| header.data[header.len++] = '.'; |
| header.data[header.len++] = '.'; |
| } |
| |
| ngx_log_error(NGX_LOG_INFO, c->log, 0, |
| "client sent too long header line: \"%V\"", |
| &header); |
| ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST); |
| ngx_http_close_connection(c); |
| return; |
| } |
| } |
| |
| n = ngx_http_read_request_header(r); |
| |
| if (n == NGX_AGAIN || n == NGX_ERROR) { |
| return; |
| } |
| } |
| |
| rc = ngx_http_parse_header_line(r, r->header_in); |
| |
| if (rc == NGX_OK) { |
| |
| if (r->invalid_header && cscf->ignore_invalid_headers) { |
| |
| /* there was error while a header line parsing */ |
| |
| header.len = r->header_end - r->header_name_start; |
| header.data = r->header_name_start; |
| |
| ngx_log_error(NGX_LOG_INFO, c->log, 0, |
| "client sent invalid header line: \"%V\"", |
| &header); |
| continue; |
| } |
| |
| /* a header line has been parsed successfully */ |
| |
| h = ngx_list_push(&r->headers_in.headers); |
| if (h == NULL) { |
| ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| h->hash = r->header_hash; |
| |
| h->key.len = r->header_name_end - r->header_name_start; |
| h->key.data = r->header_name_start; |
| h->key.data[h->key.len] = '\0'; |
| |
| h->value.len = r->header_end - r->header_start; |
| h->value.data = r->header_start; |
| h->value.data[h->value.len] = '\0'; |
| |
| key = h->hash % cmcf->headers_in_hash.hash_size; |
| |
| if (hh[key].name.len == h->key.len |
| && ngx_strcasecmp(hh[key].name.data, h->key.data) == 0) |
| { |
| if (hh[key].handler(r, h, hh[key].offset) != NGX_OK) { |
| return; |
| } |
| } |
| |
| ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http header: \"%V: %V\"", |
| &h->key, &h->value); |
| |
| continue; |
| } |
| |
| if (rc == NGX_HTTP_PARSE_HEADER_DONE) { |
| |
| /* a whole header has been parsed successfully */ |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http header done"); |
| |
| r->request_length += r->header_in->pos - r->header_in->start; |
| |
| r->http_state = NGX_HTTP_PROCESS_REQUEST_STATE; |
| |
| rc = ngx_http_process_request_header(r); |
| |
| if (rc != NGX_OK) { |
| return; |
| } |
| |
| if (rev->timer_set) { |
| ngx_del_timer(rev); |
| } |
| |
| #if (NGX_STAT_STUB) |
| ngx_atomic_dec(ngx_stat_reading); |
| r->stat_reading = 0; |
| ngx_atomic_inc(ngx_stat_writing); |
| r->stat_writing = 1; |
| #endif |
| |
| rev->handler = ngx_http_request_handler; |
| c->write->handler = ngx_http_request_handler; |
| r->read_event_handler = ngx_http_block_read; |
| |
| ngx_http_handler(r); |
| |
| return; |
| } |
| |
| if (rc == NGX_AGAIN) { |
| |
| /* a header line parsing is still not complete */ |
| |
| continue; |
| } |
| |
| /* rc == NGX_HTTP_PARSE_INVALID_HEADER: "\r" is not followed by "\n" */ |
| |
| header.len = r->header_end - r->header_name_start; |
| header.data = r->header_name_start; |
| ngx_log_error(NGX_LOG_INFO, c->log, 0, |
| "client sent invalid header line: \"%V\\r...\"", |
| &header); |
| ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST); |
| ngx_http_close_connection(c); |
| return; |
| } |
| } |
| |
| |
| static ssize_t |
| ngx_http_read_request_header(ngx_http_request_t *r) |
| { |
| ssize_t n; |
| ngx_event_t *rev; |
| ngx_http_core_srv_conf_t *cscf; |
| |
| rev = r->connection->read; |
| |
| n = r->header_in->last - r->header_in->pos; |
| |
| if (n > 0) { |
| return n; |
| } |
| |
| if (rev->ready) { |
| n = r->connection->recv(r->connection, r->header_in->last, |
| r->header_in->end - r->header_in->last); |
| } else { |
| n = NGX_AGAIN; |
| } |
| |
| if (n == NGX_AGAIN) { |
| if (!r->header_timeout_set) { |
| cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module); |
| ngx_add_timer(rev, cscf->client_header_timeout); |
| r->header_timeout_set = 1; |
| } |
| |
| if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { |
| ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| ngx_http_close_connection(r->connection); |
| return NGX_ERROR; |
| } |
| |
| return NGX_AGAIN; |
| } |
| |
| if (n == 0) { |
| ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, |
| "client closed prematurely connection"); |
| } |
| |
| if (n == 0 || n == NGX_ERROR) { |
| ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST); |
| ngx_http_close_connection(r->connection); |
| return NGX_ERROR; |
| } |
| |
| r->header_in->last += n; |
| |
| return n; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_alloc_large_header_buffer(ngx_http_request_t *r, |
| ngx_uint_t request_line) |
| { |
| u_char *old, *new; |
| ngx_buf_t *b; |
| ngx_http_connection_t *hc; |
| ngx_http_core_srv_conf_t *cscf; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http alloc large header buffer"); |
| |
| if (request_line && r->state == 0) { |
| |
| /* the client fills up the buffer with "\r\n" */ |
| |
| r->request_length += r->header_in->end - r->header_in->start; |
| |
| r->header_in->pos = r->header_in->start; |
| r->header_in->last = r->header_in->start; |
| |
| return NGX_OK; |
| } |
| |
| old = request_line ? r->request_start : r->header_name_start; |
| |
| cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module); |
| |
| if (r->state != 0 |
| && (size_t) (r->header_in->pos - old) |
| >= cscf->large_client_header_buffers.size) |
| { |
| return NGX_DECLINED; |
| } |
| |
| hc = r->http_connection; |
| |
| if (hc->nfree) { |
| b = hc->free[--hc->nfree]; |
| |
| ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http large header free: %p %uz", |
| b->pos, b->end - b->last); |
| |
| } else if (hc->nbusy < cscf->large_client_header_buffers.num) { |
| |
| if (hc->busy == NULL) { |
| hc->busy = ngx_palloc(r->connection->pool, |
| cscf->large_client_header_buffers.num * sizeof(ngx_buf_t *)); |
| if (hc->busy == NULL) { |
| return NGX_ERROR; |
| } |
| } |
| |
| b = ngx_create_temp_buf(r->connection->pool, |
| cscf->large_client_header_buffers.size); |
| if (b == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http large header alloc: %p %uz", |
| b->pos, b->end - b->last); |
| |
| } else { |
| return NGX_DECLINED; |
| } |
| |
| hc->busy[hc->nbusy++] = b; |
| |
| if (r->state == 0) { |
| /* |
| * r->state == 0 means that a header line was parsed successfully |
| * and we do not need to copy incomplete header line and |
| * to relocate the parser header pointers |
| */ |
| |
| r->request_length += r->header_in->end - r->header_in->start; |
| |
| r->header_in = b; |
| |
| return NGX_OK; |
| } |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http large header copy: %d", r->header_in->pos - old); |
| |
| r->request_length += old - r->header_in->start; |
| |
| new = b->start; |
| |
| ngx_memcpy(new, old, r->header_in->pos - old); |
| |
| b->pos = new + (r->header_in->pos - old); |
| b->last = new + (r->header_in->pos - old); |
| |
| if (request_line) { |
| r->request_start = new; |
| |
| if (r->request_end) { |
| r->request_end = new + (r->request_end - old); |
| } |
| |
| r->method_end = new + (r->method_end - old); |
| |
| r->uri_start = new + (r->uri_start - old); |
| r->uri_end = new + (r->uri_end - old); |
| |
| if (r->schema_start) { |
| r->schema_start = new + (r->schema_start - old); |
| r->schema_end = new + (r->schema_end - old); |
| } |
| |
| if (r->host_start) { |
| r->host_start = new + (r->host_start - old); |
| r->host_end = new + (r->host_end - old); |
| } |
| |
| if (r->port_start) { |
| r->port_start = new + (r->port_start - old); |
| r->port_end = new + (r->port_end - old); |
| } |
| |
| if (r->uri_ext) { |
| r->uri_ext = new + (r->uri_ext - old); |
| } |
| |
| if (r->args_start) { |
| r->args_start = new + (r->args_start - old); |
| } |
| |
| } else { |
| r->header_name_start = new; |
| r->header_name_end = new + (r->header_name_end - old); |
| r->header_start = new + (r->header_start - old); |
| r->header_end = new + (r->header_end - old); |
| } |
| |
| r->header_in = b; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, |
| ngx_uint_t offset) |
| { |
| ngx_table_elt_t **ph; |
| |
| ph = (ngx_table_elt_t **) ((char *) &r->headers_in + offset); |
| |
| if (*ph == NULL) { |
| *ph = h; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_process_unique_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, |
| ngx_uint_t offset) |
| { |
| ngx_table_elt_t **ph; |
| |
| ph = (ngx_table_elt_t **) ((char *) &r->headers_in + offset); |
| |
| if (*ph == NULL) { |
| *ph = h; |
| return NGX_OK; |
| } |
| |
| ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, |
| "client sent duplicate header line: \"%V: %V\"", |
| &h->key, &h->value); |
| |
| ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST); |
| |
| return NGX_ERROR; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_process_cookie(ngx_http_request_t *r, ngx_table_elt_t *h, |
| ngx_uint_t offset) |
| { |
| ngx_table_elt_t **cookie; |
| |
| cookie = ngx_array_push(&r->headers_in.cookies); |
| if (cookie) { |
| *cookie = h; |
| return NGX_OK; |
| } |
| |
| ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| ngx_http_close_connection(r->connection); |
| |
| return NGX_ERROR; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_process_request_header(ngx_http_request_t *r) |
| { |
| size_t len; |
| u_char *ua, *user_agent, ch; |
| ngx_http_core_srv_conf_t *cscf; |
| |
| if (r->headers_in.host) { |
| for (len = 0; len < r->headers_in.host->value.len; len++) { |
| ch = r->headers_in.host->value.data[len]; |
| |
| if (ch == ':') { |
| break; |
| } |
| |
| r->headers_in.host->value.data[len] = ngx_tolower(ch); |
| } |
| |
| if (r->headers_in.host->value.data[len - 1] == '.') { |
| len--; |
| } |
| |
| r->headers_in.host_name_len = len; |
| |
| if (ngx_http_find_virtual_server(r) != NGX_OK) { |
| ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, |
| "client sent invalid \"Host\" header"); |
| |
| cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module); |
| |
| if (cscf->restrict_host_names == NGX_HTTP_RESTRICT_HOST_CLOSE) { |
| ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST); |
| ngx_http_close_connection(r->connection); |
| return NGX_ERROR; |
| } |
| |
| ngx_http_finalize_request(r, NGX_HTTP_INVALID_HOST); |
| return NGX_ERROR; |
| } |
| |
| } else { |
| if (r->http_version > NGX_HTTP_VERSION_10) { |
| ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, |
| "client sent HTTP/1.1 request without \"Host\" header"); |
| ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST); |
| return NGX_ERROR; |
| } |
| |
| r->headers_in.host_name_len = 0; |
| } |
| |
| if (r->headers_in.content_length) { |
| r->headers_in.content_length_n = |
| ngx_atosz(r->headers_in.content_length->value.data, |
| r->headers_in.content_length->value.len); |
| |
| if (r->headers_in.content_length_n == NGX_ERROR) { |
| ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, |
| "client sent invalid \"Content-Length\" header"); |
| ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST); |
| return NGX_ERROR; |
| } |
| } |
| |
| if (r->method == NGX_HTTP_POST && r->headers_in.content_length_n == -1) { |
| ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, |
| "client sent POST method without \"Content-Length\" header"); |
| ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST); |
| return NGX_ERROR; |
| } |
| |
| if (r->plain_http) { |
| ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, |
| "client sent plain HTTP request to HTTPS port"); |
| ngx_http_finalize_request(r, NGX_HTTP_TO_HTTPS); |
| return NGX_ERROR; |
| } |
| |
| if (r->headers_in.connection) { |
| if (r->headers_in.connection->value.len == 5 |
| && ngx_strcasecmp(r->headers_in.connection->value.data, "close") |
| == 0) |
| { |
| r->headers_in.connection_type = NGX_HTTP_CONNECTION_CLOSE; |
| |
| } else if (r->headers_in.connection->value.len == 10 |
| && ngx_strcasecmp(r->headers_in.connection->value.data, |
| "keep-alive") == 0) |
| { |
| r->headers_in.connection_type = NGX_HTTP_CONNECTION_KEEP_ALIVE; |
| |
| if (r->headers_in.keep_alive) { |
| r->headers_in.keep_alive_n = |
| ngx_atotm(r->headers_in.keep_alive->value.data, |
| r->headers_in.keep_alive->value.len); |
| } |
| } |
| } |
| |
| if (r->headers_in.user_agent) { |
| |
| /* |
| * check some widespread browsers while the headers are still |
| * in CPU cache |
| */ |
| |
| user_agent = r->headers_in.user_agent->value.data; |
| |
| ua = (u_char *) ngx_strstr(user_agent, "MSIE"); |
| |
| if (ua && ua + 8 < user_agent + r->headers_in.user_agent->value.len) { |
| |
| r->headers_in.msie = 1; |
| |
| if (ua[4] == ' ' && ua[5] == '4' && ua[6] == '.') { |
| r->headers_in.msie4 = 1; |
| } |
| |
| #if 0 |
| /* MSIE ignores the SSL "close notify" alert */ |
| if (c->ssl) { |
| c->ssl->no_send_shutdown = 1; |
| } |
| #endif |
| } |
| |
| if (ngx_strstr(user_agent, "Opera")) { |
| r->headers_in.opera = 1; |
| r->headers_in.msie = 0; |
| r->headers_in.msie4 = 0; |
| } |
| |
| if (!r->headers_in.msie && !r->headers_in.opera) { |
| |
| if (ngx_strstr(user_agent, "Gecko/")) { |
| r->headers_in.gecko = 1; |
| |
| } else if (ngx_strstr(user_agent, "Konqueror")) { |
| r->headers_in.konqueror = 1; |
| } |
| } |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_find_virtual_server(ngx_http_request_t *r) |
| { |
| ngx_int_t rc; |
| ngx_uint_t i, n, key; |
| ngx_http_server_name_t *name; |
| ngx_http_core_loc_conf_t *clcf; |
| ngx_http_core_srv_conf_t *cscf; |
| ngx_http_core_main_conf_t *cmcf; |
| |
| if (r->virtual_names->hash) { |
| cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); |
| |
| ngx_http_server_names_hash_key(key, |
| r->headers_in.host->value.data, |
| r->headers_in.host_name_len, |
| cmcf->server_names_hash); |
| |
| name = r->virtual_names->hash[key].elts; |
| n = r->virtual_names->hash[key].nelts; |
| |
| } else { |
| name = r->virtual_names->names.elts; |
| n = r->virtual_names->names.nelts; |
| } |
| |
| for (i = 0; i < n; i++) { |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "server name: %V", &name[i].name); |
| |
| if (r->headers_in.host_name_len != name[i].name.len) { |
| continue; |
| } |
| |
| rc = ngx_strncmp(r->headers_in.host->value.data, |
| name[i].name.data, name[i].name.len); |
| |
| if (rc == 0) { |
| r->server_name = name[i].name; |
| goto found; |
| } |
| |
| if (rc < 0) { |
| /* the server names are lexicographically sorted */ |
| break; |
| } |
| } |
| |
| if (r->virtual_names->wildcards.nelts) { |
| |
| name = r->virtual_names->wildcards.elts; |
| for (i = 0; i < r->virtual_names->wildcards.nelts; i++) { |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "server name: %V", &name[i].name); |
| |
| if (r->headers_in.host_name_len <= name[i].name.len) { |
| continue; |
| } |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "server name: %s", |
| r->headers_in.host->value.data |
| + (r->headers_in.host_name_len - name[i].name.len)); |
| |
| if (ngx_strncmp(r->headers_in.host->value.data |
| + (r->headers_in.host_name_len - name[i].name.len), |
| name[i].name.data, name[i].name.len) == 0) |
| { |
| r->server_name.len = r->headers_in.host_name_len; |
| r->server_name.data = r->headers_in.host->value.data; |
| |
| goto found; |
| } |
| } |
| } |
| |
| cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module); |
| |
| if (cscf->restrict_host_names == NGX_HTTP_RESTRICT_HOST_OFF) { |
| return NGX_OK; |
| } |
| |
| return NGX_ERROR; |
| |
| found: |
| |
| r->srv_conf = name[i].core_srv_conf->ctx->srv_conf; |
| r->loc_conf = name[i].core_srv_conf->ctx->loc_conf; |
| |
| clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| r->connection->log->file = clcf->err_log->file; |
| |
| if (!(r->connection->log->log_level & NGX_LOG_DEBUG_CONNECTION)) { |
| r->connection->log->log_level = clcf->err_log->log_level; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static void |
| ngx_http_request_handler(ngx_event_t *ev) |
| { |
| ngx_connection_t *c; |
| ngx_http_request_t *r; |
| |
| c = ev->data; |
| r = c->data; |
| |
| if (ev->write) { |
| r->write_event_handler(r); |
| |
| } else { |
| r->read_event_handler(r); |
| } |
| } |
| |
| |
| void |
| ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc) |
| { |
| ngx_http_request_t *pr; |
| ngx_http_core_loc_conf_t *clcf; |
| |
| if (rc == NGX_DONE) { |
| /* r may be already destroyed when rc == NGX_DONE */ |
| return; |
| } |
| |
| ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http finalize request: %d, \"%V\"", rc, &r->uri); |
| |
| if (r->parent |
| && (rc >= NGX_HTTP_SPECIAL_RESPONSE || rc == NGX_HTTP_NO_CONTENT)) |
| { |
| ngx_http_finalize_request(r, ngx_http_special_response_handler(r, rc)); |
| return; |
| } |
| |
| if (r->parent || rc == NGX_AGAIN) { |
| if (ngx_http_set_write_handler(r) != NGX_OK) { |
| return; |
| } |
| } |
| |
| r->done = 1; |
| |
| if (r != r->connection->data) { |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http finalize non-active request: \"%V\"", &r->uri); |
| return; |
| } |
| |
| if (r->parent) { |
| |
| pr = r->parent; |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http parent request: \"%V\"", &pr->uri); |
| |
| if (rc != NGX_AGAIN) { |
| pr->connection->data = pr; |
| } |
| |
| if (pr->postponed) { |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http request: \"%V\" has postponed", &pr->uri); |
| |
| if (rc != NGX_AGAIN && pr->postponed->request == r) { |
| pr->postponed = pr->postponed->next; |
| |
| if (pr->postponed == NULL) { |
| return; |
| } |
| } |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http request: \"%V\" still has postponed", |
| &pr->uri); |
| |
| if (pr->done) { |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http wake parent request: \"%V\"", &pr->uri); |
| |
| pr->write_event_handler(pr); |
| } |
| } |
| |
| return; |
| } |
| |
| if (rc >= NGX_HTTP_SPECIAL_RESPONSE || rc == NGX_HTTP_NO_CONTENT) { |
| |
| if (r->connection->read->timer_set) { |
| ngx_del_timer(r->connection->read); |
| } |
| |
| if (r->connection->write->timer_set) { |
| ngx_del_timer(r->connection->write); |
| } |
| |
| if (r->connection->closed) { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(r->connection); |
| return; |
| } |
| |
| ngx_http_finalize_request(r, ngx_http_special_response_handler(r, rc)); |
| |
| return; |
| } |
| |
| if (rc == NGX_ERROR || r->connection->closed) { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(r->connection); |
| return; |
| } |
| |
| if (rc == NGX_AGAIN || r->out) { |
| (void) ngx_http_set_write_handler(r); |
| return; |
| } |
| |
| if (r->connection->read->timer_set) { |
| ngx_del_timer(r->connection->read); |
| } |
| |
| if (r->connection->write->timer_set) { |
| r->connection->write->delayed = 0; |
| ngx_del_timer(r->connection->write); |
| } |
| |
| if (r->connection->read->pending_eof) { |
| #if (NGX_HAVE_KQUEUE) |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, |
| r->connection->read->kq_errno, |
| "kevent() reported about an closed connection"); |
| #endif |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(r->connection); |
| return; |
| } |
| |
| clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| |
| if (!ngx_terminate |
| && !ngx_exiting |
| && r->keepalive != 0 |
| && clcf->keepalive_timeout > 0) |
| { |
| ngx_http_set_keepalive(r); |
| return; |
| |
| } else if (r->lingering_close && clcf->lingering_timeout > 0) { |
| ngx_http_set_lingering_close(r); |
| return; |
| } |
| |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(r->connection); |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_set_write_handler(ngx_http_request_t *r) |
| { |
| ngx_event_t *wev; |
| ngx_http_core_loc_conf_t *clcf; |
| |
| r->http_state = NGX_HTTP_WRITING_REQUEST_STATE; |
| |
| r->write_event_handler = ngx_http_writer; |
| |
| if (r->connection->closed) { |
| return NGX_OK; |
| } |
| |
| wev = r->connection->write; |
| |
| if (wev->ready && wev->delayed) { |
| return NGX_OK; |
| } |
| |
| clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| if (!wev->delayed) { |
| ngx_add_timer(wev, clcf->send_timeout); |
| } |
| |
| if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(r->connection); |
| return NGX_ERROR; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static void |
| ngx_http_writer(ngx_http_request_t *r) |
| { |
| int rc; |
| ngx_event_t *wev; |
| ngx_connection_t *c; |
| ngx_http_core_loc_conf_t *clcf; |
| |
| c = r->connection; |
| wev = c->write; |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, wev->log, 0, |
| "http writer handler: \"%V\"", &r->uri); |
| |
| if (wev->timedout) { |
| if (!wev->delayed) { |
| ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, |
| "client timed out"); |
| c->timedout = 1; |
| ngx_http_close_request(r, NGX_HTTP_REQUEST_TIME_OUT); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| wev->timedout = 0; |
| wev->delayed = 0; |
| |
| if (!wev->ready) { |
| clcf = ngx_http_get_module_loc_conf(r->main, ngx_http_core_module); |
| ngx_add_timer(wev, clcf->send_timeout); |
| |
| if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(r->connection); |
| } |
| |
| return; |
| } |
| |
| } else { |
| if (wev->delayed) { |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, |
| "http writer delayed"); |
| |
| clcf = ngx_http_get_module_loc_conf(r->main, ngx_http_core_module); |
| |
| if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(r->connection); |
| } |
| |
| return; |
| } |
| } |
| |
| if (r->postponed) { |
| rc = ngx_http_postponed_handler(r); |
| |
| if (rc == NGX_DONE) { |
| /* r may be already destroyed when rc == NGX_DONE */ |
| return; |
| } |
| |
| } else { |
| rc = ngx_http_output_filter(r, NULL); |
| |
| } |
| |
| ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| "http writer output filter: %d, \"%V\"", rc, &r->uri); |
| |
| if (rc == NGX_AGAIN) { |
| clcf = ngx_http_get_module_loc_conf(r->main, ngx_http_core_module); |
| if (!wev->ready && !wev->delayed) { |
| ngx_add_timer(wev, clcf->send_timeout); |
| } |
| |
| if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(r->connection); |
| } |
| |
| return; |
| } |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, wev->log, 0, |
| "http writer done: \"%V\"", &r->uri); |
| |
| ngx_http_finalize_request(r, rc); |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_postponed_handler(ngx_http_request_t *r) |
| { |
| ngx_int_t rc; |
| ngx_http_postponed_request_t *pr; |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http postpone handler \"%V\"", &r->uri); |
| |
| pr = r->postponed; |
| |
| if (pr->request == NULL) { |
| ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http postponed data \"%V\" %p", &r->uri, pr->out); |
| |
| rc = ngx_http_output_filter(r, NULL); |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http postponed output filter: %d", rc); |
| |
| /* |
| * we treat NGX_ERROR as NGX_OK, because we need to complete |
| * all postponed requests |
| */ |
| |
| pr = r->postponed; |
| |
| if (pr == NULL) { |
| |
| if (rc == NGX_AGAIN) { |
| return NGX_AGAIN; |
| } |
| |
| return NGX_OK; |
| } |
| } |
| |
| r = pr->request; |
| r->connection->data = r; |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http wake child request \"%V\"", &r->uri); |
| |
| r->write_event_handler(r); |
| |
| return NGX_DONE; |
| } |
| |
| |
| static void |
| ngx_http_block_read(ngx_http_request_t *r) |
| { |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http read blocked"); |
| |
| /* aio does not call this handler */ |
| |
| if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) |
| && r->connection->read->active) |
| { |
| if (ngx_del_event(r->connection->read, NGX_READ_EVENT, 0) |
| == NGX_ERROR) |
| { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(r->connection); |
| } |
| } |
| } |
| |
| |
| ngx_int_t |
| ngx_http_discard_body(ngx_http_request_t *r) |
| { |
| ssize_t size; |
| ngx_event_t *rev; |
| |
| if (r->main != r) { |
| return NGX_OK; |
| } |
| |
| rev = r->connection->read; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http set discard body"); |
| |
| if (rev->timer_set) { |
| ngx_del_timer(rev); |
| } |
| |
| if (r->headers_in.content_length_n <= 0) { |
| return NGX_OK; |
| } |
| |
| r->discard_body = 1; |
| |
| size = r->header_in->last - r->header_in->pos; |
| |
| if (size) { |
| if (r->headers_in.content_length_n > size) { |
| r->headers_in.content_length_n -= size; |
| |
| } else { |
| r->header_in->pos += r->headers_in.content_length_n; |
| r->headers_in.content_length_n = 0; |
| return NGX_OK; |
| } |
| } |
| |
| r->read_event_handler = ngx_http_read_discarded_body_handler; |
| |
| if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { |
| return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| } |
| |
| return ngx_http_read_discarded_body(r); |
| } |
| |
| |
| static void |
| ngx_http_read_discarded_body_handler(ngx_http_request_t *r) |
| { |
| ngx_int_t rc; |
| |
| rc = ngx_http_read_discarded_body(r); |
| |
| if (rc == NGX_AGAIN) { |
| if (ngx_handle_read_event(r->connection->read, 0) == NGX_ERROR) { |
| ngx_http_close_request(r, rc); |
| ngx_http_close_connection(r->connection); |
| return; |
| } |
| } |
| |
| if (rc != NGX_OK) { |
| ngx_http_close_request(r, rc); |
| ngx_http_close_connection(r->connection); |
| } |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_read_discarded_body(ngx_http_request_t *r) |
| { |
| ssize_t size, n; |
| u_char buffer[NGX_HTTP_DISCARD_BUFFER_SIZE]; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http read discarded body"); |
| |
| if (r->headers_in.content_length_n == 0) { |
| return NGX_OK; |
| } |
| |
| |
| size = r->headers_in.content_length_n; |
| |
| if (size > NGX_HTTP_DISCARD_BUFFER_SIZE) { |
| size = NGX_HTTP_DISCARD_BUFFER_SIZE; |
| } |
| |
| n = r->connection->recv(r->connection, buffer, size); |
| |
| if (n == NGX_ERROR) { |
| |
| r->connection->closed = 1; |
| |
| /* |
| * if a client request body is discarded then we already set |
| * some HTTP response code for client and we can ignore the error |
| */ |
| |
| return NGX_OK; |
| } |
| |
| if (n == NGX_AGAIN) { |
| return NGX_AGAIN; |
| } |
| |
| r->headers_in.content_length_n -= n; |
| |
| return NGX_OK; |
| } |
| |
| |
| static void |
| ngx_http_set_keepalive(ngx_http_request_t *r) |
| { |
| int tcp_nodelay; |
| ngx_int_t i; |
| ngx_buf_t *b, *f; |
| ngx_event_t *rev, *wev; |
| ngx_connection_t *c; |
| ngx_http_connection_t *hc; |
| ngx_http_core_srv_conf_t *cscf; |
| ngx_http_core_loc_conf_t *clcf; |
| |
| c = r->connection; |
| rev = c->read; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "set http keepalive handler"); |
| |
| c->log->action = "closing request"; |
| |
| hc = r->http_connection; |
| b = r->header_in; |
| |
| if (b->pos < b->last) { |
| |
| /* the pipelined request */ |
| |
| if (b != c->buffer) { |
| |
| /* |
| * If the large header buffers were allocated while the previous |
| * request processing then we do not use c->buffer for |
| * the pipelined request (see ngx_http_init_request()). |
| * |
| * Now we would move the large header buffers to the free list. |
| */ |
| |
| cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module); |
| |
| if (hc->free == NULL) { |
| hc->free = ngx_palloc(c->pool, |
| cscf->large_client_header_buffers.num * sizeof(ngx_buf_t *)); |
| |
| if (hc->free == NULL) { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(c); |
| return; |
| } |
| } |
| |
| for (i = 0; i < hc->nbusy - 1; i++) { |
| f = hc->busy[i]; |
| hc->free[hc->nfree++] = f; |
| f->pos = f->start; |
| f->last = f->start; |
| } |
| |
| hc->busy[0] = b; |
| hc->nbusy = 1; |
| } |
| } |
| |
| clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| |
| ngx_http_close_request(r, 0); |
| c->data = hc; |
| |
| ngx_add_timer(rev, clcf->keepalive_timeout); |
| |
| if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| wev = c->write; |
| wev->handler = ngx_http_empty_handler; |
| |
| if (b->pos < b->last) { |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "pipelined request"); |
| |
| hc->pipeline = 1; |
| c->log->action = "reading client pipelined request line"; |
| ngx_http_init_request(rev); |
| return; |
| } |
| |
| hc->pipeline = 0; |
| |
| /* |
| * To keep a memory footprint as small as possible for an idle |
| * keepalive connection we try to free the ngx_http_request_t and |
| * c->buffer's memory if they were allocated outside the c->pool. |
| * The large header buffers are always allocated outside the c->pool and |
| * are freed too. |
| */ |
| |
| if (ngx_pfree(c->pool, r) == NGX_OK) { |
| hc->request = NULL; |
| } |
| |
| b = c->buffer; |
| |
| if (ngx_pfree(c->pool, b->start) == NGX_OK) { |
| |
| /* |
| * the special note for ngx_http_keepalive_handler() that |
| * c->buffer's memory was freed |
| */ |
| |
| b->pos = NULL; |
| |
| } else { |
| b->pos = b->start; |
| b->last = b->start; |
| } |
| |
| ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "hc free: %p %d", |
| hc->free, hc->nfree); |
| |
| if (hc->free) { |
| for (i = 0; i < hc->nfree; i++) { |
| ngx_pfree(c->pool, hc->free[i]); |
| hc->free[i] = NULL; |
| } |
| |
| hc->nfree = 0; |
| } |
| |
| ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "hc busy: %p %d", |
| hc->busy, hc->nbusy); |
| |
| if (hc->busy) { |
| for (i = 0; i < hc->nbusy; i++) { |
| ngx_pfree(c->pool, hc->busy[i]); |
| hc->busy[i] = NULL; |
| } |
| |
| hc->nbusy = 0; |
| } |
| |
| rev->handler = ngx_http_keepalive_handler; |
| |
| if (wev->active) { |
| if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
| if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_DISABLE_EVENT) |
| == NGX_ERROR) |
| { |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) { |
| if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) { |
| ngx_http_close_connection(c); |
| return; |
| } |
| } |
| } |
| |
| c->log->action = "keepalive"; |
| |
| if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) { |
| if (ngx_tcp_push(c->fd) == -1) { |
| ngx_connection_error(c, ngx_socket_errno, ngx_tcp_push_n " failed"); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| c->tcp_nopush = NGX_TCP_NOPUSH_UNSET; |
| tcp_nodelay = ngx_tcp_nodelay_and_tcp_nopush ? 1 : 0; |
| |
| } else { |
| tcp_nodelay = 1; |
| } |
| |
| if (tcp_nodelay |
| && clcf->tcp_nodelay |
| && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) |
| { |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay"); |
| |
| if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY, |
| (const void *) &tcp_nodelay, sizeof(int)) == -1) |
| { |
| ngx_connection_error(c, ngx_socket_errno, |
| "setsockopt(TCP_NODELAY) failed"); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| c->tcp_nodelay = NGX_TCP_NODELAY_SET; |
| } |
| |
| #if 0 |
| /* if ngx_http_request_t was freed then we need some other place */ |
| r->http_state = NGX_HTTP_KEEPALIVE_STATE; |
| #endif |
| |
| if (rev->ready) { |
| ngx_http_keepalive_handler(rev); |
| } |
| } |
| |
| |
| static void |
| ngx_http_keepalive_handler(ngx_event_t *rev) |
| { |
| size_t size; |
| ssize_t n; |
| ngx_buf_t *b; |
| ngx_connection_t *c; |
| |
| c = rev->data; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http keepalive handler"); |
| |
| if (rev->timedout) { |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| #if (NGX_HAVE_KQUEUE) |
| |
| if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
| if (rev->pending_eof) { |
| c->log->handler = NULL; |
| ngx_log_error(NGX_LOG_INFO, c->log, rev->kq_errno, |
| "kevent() reported that client %V closed " |
| "keepalive connection", &c->addr_text); |
| #if (NGX_HTTP_SSL) |
| if (c->ssl) { |
| c->ssl->no_send_shutdown = 1; |
| } |
| #endif |
| ngx_http_close_connection(c); |
| return; |
| } |
| } |
| |
| #endif |
| |
| b = c->buffer; |
| size = b->end - b->start; |
| |
| if (b->pos == NULL) { |
| |
| /* |
| * The c->buffer's memory was freed by ngx_http_set_keepalive(). |
| * However, the c->buffer->start and c->buffer->end were not changed |
| * to keep the buffer size. |
| */ |
| |
| b->pos = ngx_palloc(c->pool, size); |
| if (b->pos == NULL) { |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| b->start = b->pos; |
| b->last = b->pos; |
| b->end = b->pos + size; |
| } |
| |
| /* |
| * MSIE closes a keepalive connection with RST flag |
| * so we ignore ECONNRESET here. |
| */ |
| |
| c->log_error = NGX_ERROR_IGNORE_ECONNRESET; |
| ngx_set_socket_errno(0); |
| |
| n = c->recv(c, b->last, size); |
| c->log_error = NGX_ERROR_INFO; |
| |
| if (n == NGX_AGAIN) { |
| if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { |
| ngx_http_close_connection(c); |
| } |
| |
| return; |
| } |
| |
| if (n == NGX_ERROR) { |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| c->log->handler = NULL; |
| |
| if (n == 0) { |
| ngx_log_error(NGX_LOG_INFO, c->log, ngx_socket_errno, |
| "client %V closed keepalive connection", &c->addr_text); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| b->last += n; |
| |
| c->log->handler = ngx_http_log_error; |
| c->log->action = "reading client request line"; |
| |
| ngx_http_init_request(rev); |
| } |
| |
| |
| static void |
| ngx_http_set_lingering_close(ngx_http_request_t *r) |
| { |
| ngx_event_t *rev, *wev; |
| ngx_connection_t *c; |
| ngx_http_core_loc_conf_t *clcf; |
| |
| c = r->connection; |
| |
| clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| |
| rev = c->read; |
| rev->handler = ngx_http_lingering_close_handler; |
| |
| r->lingering_time = ngx_time() + clcf->lingering_time / 1000; |
| ngx_add_timer(rev, clcf->lingering_timeout); |
| |
| if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| wev = c->write; |
| wev->handler = ngx_http_empty_handler; |
| |
| if (wev->active) { |
| if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
| if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_DISABLE_EVENT) |
| == NGX_ERROR) |
| { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) { |
| if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(c); |
| return; |
| } |
| } |
| } |
| |
| if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) { |
| ngx_connection_error(c, ngx_socket_errno, |
| ngx_shutdown_socket_n " failed"); |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| if (rev->ready) { |
| ngx_http_lingering_close_handler(rev); |
| } |
| } |
| |
| |
| static void |
| ngx_http_lingering_close_handler(ngx_event_t *rev) |
| { |
| ssize_t n; |
| ngx_msec_t timer; |
| ngx_connection_t *c; |
| ngx_http_request_t *r; |
| ngx_http_core_loc_conf_t *clcf; |
| u_char buffer[NGX_HTTP_LINGERING_BUFFER_SIZE]; |
| |
| c = rev->data; |
| r = c->data; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| "http lingering close handler"); |
| |
| if (rev->timedout) { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| timer = r->lingering_time - ngx_time(); |
| if (timer <= 0) { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| do { |
| n = c->recv(c, buffer, NGX_HTTP_LINGERING_BUFFER_SIZE); |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "lingering read: %d", n); |
| |
| if (n == NGX_ERROR || n == 0) { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| } while (rev->ready); |
| |
| if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { |
| ngx_http_close_request(r, 0); |
| ngx_http_close_connection(c); |
| return; |
| } |
| |
| clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| |
| timer *= 1000; |
| |
| if (timer > clcf->lingering_timeout) { |
| timer = clcf->lingering_timeout; |
| } |
| |
| ngx_add_timer(rev, timer); |
| } |
| |
| |
| void |
| ngx_http_empty_handler(ngx_event_t *wev) |
| { |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, "http empty handler"); |
| |
| return; |
| } |
| |
| |
| void |
| ngx_http_request_empty_handler(ngx_http_request_t *r) |
| { |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http requets empty handler"); |
| |
| return; |
| } |
| |
| |
| ngx_int_t |
| ngx_http_send_last(ngx_http_request_t *r) |
| { |
| ngx_buf_t *b; |
| ngx_chain_t out; |
| |
| b = ngx_calloc_buf(r->pool); |
| if (b == NULL) { |
| return NGX_ERROR; |
| } |
| |
| b->last_buf = 1; |
| out.buf = b; |
| out.next = NULL; |
| |
| return ngx_http_output_filter(r, &out); |
| } |
| |
| |
| void |
| ngx_http_close_request(ngx_http_request_t *r, ngx_int_t error) |
| { |
| ngx_log_t *log; |
| struct linger linger; |
| ngx_http_log_ctx_t *ctx; |
| ngx_http_core_loc_conf_t *clcf; |
| |
| log = r->connection->log; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http close request"); |
| |
| if (r->pool == NULL) { |
| ngx_log_error(NGX_LOG_ALERT, log, 0, "http request already closed"); |
| return; |
| } |
| |
| #if (NGX_STAT_STUB) |
| if (r->stat_reading) { |
| ngx_atomic_dec(ngx_stat_reading); |
| } |
| |
| if (r->stat_writing) { |
| ngx_atomic_dec(ngx_stat_writing); |
| } |
| #endif |
| |
| if (error && r->headers_out.status == 0) { |
| r->headers_out.status = error; |
| } |
| |
| ngx_http_log_handler(r); |
| |
| if (r->connection->timedout) { |
| clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| |
| if (clcf->reset_timedout_connection) { |
| linger.l_onoff = 1; |
| linger.l_linger = 0; |
| |
| if (setsockopt(r->connection->fd, SOL_SOCKET, SO_LINGER, |
| (const void *) &linger, sizeof(struct linger)) == -1) |
| { |
| ngx_log_error(NGX_LOG_ALERT, log, ngx_socket_errno, |
| "setsockopt(SO_LINGER) failed"); |
| } |
| } |
| } |
| |
| /* the various request strings were allocated from r->pool */ |
| ctx = log->data; |
| ctx->request = NULL; |
| |
| r->request_line.len = 0; |
| |
| ngx_destroy_pool(r->pool); |
| } |
| |
| |
| static void |
| ngx_http_close_connection(ngx_connection_t *c) |
| { |
| ngx_pool_t *pool; |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| "close http connection: %d", c->fd); |
| |
| #if (NGX_HTTP_SSL) |
| |
| if (c->ssl) { |
| if (ngx_ssl_shutdown(c) == NGX_AGAIN) { |
| c->read->handler = ngx_http_ssl_close_handler; |
| c->write->handler = ngx_http_ssl_close_handler; |
| return; |
| } |
| } |
| |
| #endif |
| |
| #if (NGX_STAT_STUB) |
| ngx_atomic_dec(ngx_stat_active); |
| #endif |
| |
| pool = c->pool; |
| |
| ngx_close_connection(c); |
| |
| ngx_destroy_pool(pool); |
| } |
| |
| |
| #if (NGX_HTTP_SSL) |
| |
| static void |
| ngx_http_ssl_close_handler(ngx_event_t *ev) |
| { |
| ngx_connection_t *c; |
| |
| c = ev->data; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, "http ssl close handler"); |
| |
| if (ngx_ssl_shutdown(c) == NGX_AGAIN) { |
| return; |
| } |
| |
| ngx_http_close_connection(c); |
| } |
| |
| #endif |
| |
| |
| static u_char * |
| ngx_http_log_error(ngx_log_t *log, u_char *buf, size_t len) |
| { |
| u_char *p; |
| ngx_http_request_t *r; |
| ngx_http_log_ctx_t *ctx; |
| |
| if (log->action) { |
| p = ngx_snprintf(buf, len, " while %s", log->action); |
| len -= p - buf; |
| buf = p; |
| } |
| |
| ctx = log->data; |
| |
| p = ngx_snprintf(buf, len, ", client: %V", ctx->client); |
| len -= p - buf; |
| |
| r = ctx->request; |
| |
| if (r) { |
| return r->log_handler(r, p, len); |
| } |
| |
| return p; |
| } |
| |
| |
| static u_char * |
| ngx_http_log_error_handler(ngx_http_request_t *r, u_char *buf, size_t len) |
| { |
| u_char *p; |
| |
| if (r->server_name.data) { |
| p = ngx_snprintf(buf, len, ", server: %V", &r->server_name); |
| len -= p - buf; |
| buf = p; |
| } |
| |
| if (r->unparsed_uri.data) { |
| p = ngx_snprintf(buf, len, ", URL: \"%V\"", &r->unparsed_uri); |
| len -= p - buf; |
| buf = p; |
| |
| } else { |
| if (r->request_line.data == NULL && r->request_start) { |
| for (p = r->request_start; p < r->header_in->last; p++) { |
| if (*p == CR || *p == LF) { |
| break; |
| } |
| } |
| |
| r->request_line.len = p - r->request_start; |
| r->request_line.data = r->request_start; |
| } |
| |
| if (r->request_line.len) { |
| p = ngx_snprintf(buf, len, ", request: \"%V\"", &r->request_line); |
| len -= p - buf; |
| buf = p; |
| } |
| } |
| |
| return ngx_http_log_error_info(r, buf, len); |
| } |
| |
| |
| u_char * |
| ngx_http_log_error_info(ngx_http_request_t *r, u_char *buf, size_t len) |
| { |
| u_char *p; |
| |
| if (r->headers_in.host) { |
| p = ngx_snprintf(buf, len, ", host: \"%V\"", |
| &r->headers_in.host->value); |
| len -= p - buf; |
| buf = p; |
| } |
| |
| if (r->headers_in.referer) { |
| p = ngx_snprintf(buf, len, ", referrer: \"%V\"", |
| &r->headers_in.referer->value); |
| buf = p; |
| } |
| |
| return buf; |
| } |