| |
| /* |
| * Copyright (C) Igor Sysoev |
| */ |
| |
| |
| #include <ngx_config.h> |
| #include <ngx_core.h> |
| #include <ngx_http.h> |
| #include <ngx_http_proxy_handler.h> |
| |
| |
| static ngx_int_t ngx_http_proxy_handler(ngx_http_request_t *r); |
| #if 0 |
| static ngx_int_t ngx_http_proxy_cache_get(ngx_http_proxy_ctx_t *p); |
| #endif |
| |
| static size_t ngx_http_proxy_log_proxy_state_getlen(ngx_http_request_t *r, |
| uintptr_t data); |
| static u_char *ngx_http_proxy_log_proxy_state(ngx_http_request_t *r, |
| u_char *buf, |
| ngx_http_log_op_t *op); |
| |
| #if 0 |
| static u_char *ngx_http_proxy_log_cache_state(ngx_http_request_t *r, |
| u_char *buf, uintptr_t data); |
| static u_char *ngx_http_proxy_log_reason(ngx_http_request_t *r, u_char *buf, |
| uintptr_t data); |
| #endif |
| |
| static ngx_int_t ngx_http_proxy_add_log_formats(ngx_conf_t *cf); |
| static void *ngx_http_proxy_create_loc_conf(ngx_conf_t *cf); |
| static char *ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf, |
| void *parent, void *child); |
| |
| static char *ngx_http_proxy_set_pass(ngx_conf_t *cf, ngx_command_t *cmd, |
| void *conf); |
| |
| static char *ngx_http_proxy_set_x_var(ngx_conf_t *cf, ngx_command_t *cmd, |
| void *conf); |
| static char *ngx_http_proxy_lowat_check(ngx_conf_t *cf, void *post, void *data); |
| |
| static ngx_conf_post_t ngx_http_proxy_lowat_post = |
| { ngx_http_proxy_lowat_check } ; |
| |
| |
| static ngx_conf_bitmask_t next_upstream_masks[] = { |
| { ngx_string("error"), NGX_HTTP_PROXY_FT_ERROR }, |
| { ngx_string("timeout"), NGX_HTTP_PROXY_FT_TIMEOUT }, |
| { ngx_string("invalid_header"), NGX_HTTP_PROXY_FT_INVALID_HEADER }, |
| { ngx_string("http_500"), NGX_HTTP_PROXY_FT_HTTP_500 }, |
| { ngx_string("http_404"), NGX_HTTP_PROXY_FT_HTTP_404 }, |
| { ngx_null_string, 0 } |
| }; |
| |
| |
| static ngx_conf_bitmask_t use_stale_masks[] = { |
| { ngx_string("error"), NGX_HTTP_PROXY_FT_ERROR }, |
| { ngx_string("timeout"), NGX_HTTP_PROXY_FT_TIMEOUT }, |
| { ngx_string("invalid_header"), NGX_HTTP_PROXY_FT_INVALID_HEADER }, |
| { ngx_string("http_500"), NGX_HTTP_PROXY_FT_HTTP_500 }, |
| { ngx_string("busy_lock"), NGX_HTTP_PROXY_FT_BUSY_LOCK }, |
| { ngx_string("max_waiting"), NGX_HTTP_PROXY_FT_MAX_WAITING }, |
| { ngx_null_string, 0 } |
| }; |
| |
| |
| static ngx_conf_num_bounds_t ngx_http_proxy_lm_factor_bounds = { |
| ngx_conf_check_num_bounds, 0, 100 |
| }; |
| |
| |
| static ngx_command_t ngx_http_proxy_commands[] = { |
| |
| { ngx_string("proxy_pass"), |
| NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_http_proxy_set_pass, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| 0, |
| NULL }, |
| |
| { ngx_string("proxy_connect_timeout"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_msec_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, connect_timeout), |
| NULL }, |
| |
| { ngx_string("proxy_send_timeout"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_msec_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, send_timeout), |
| NULL }, |
| |
| { ngx_string("proxy_send_lowat"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_size_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, send_lowat), |
| &ngx_http_proxy_lowat_post }, |
| |
| { ngx_string("proxy_preserve_host"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
| ngx_conf_set_flag_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, preserve_host), |
| NULL }, |
| |
| { ngx_string("proxy_pass_unparsed_uri"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
| ngx_conf_set_flag_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, pass_unparsed_uri), |
| NULL }, |
| |
| { ngx_string("proxy_set_x_url"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
| ngx_conf_set_flag_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, set_x_url), |
| NULL }, |
| |
| { ngx_string("proxy_set_x_real_ip"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
| ngx_conf_set_flag_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, set_x_real_ip), |
| NULL }, |
| |
| { ngx_string("proxy_set_x_var"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_http_proxy_set_x_var, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| 0, |
| NULL }, |
| |
| { ngx_string("proxy_add_x_forwarded_for"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
| ngx_conf_set_flag_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, add_x_forwarded_for), |
| NULL }, |
| |
| { ngx_string("proxy_header_buffer_size"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_size_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, header_buffer_size), |
| NULL }, |
| |
| { ngx_string("proxy_read_timeout"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_msec_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, read_timeout), |
| NULL }, |
| |
| { ngx_string("proxy_buffers"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, |
| ngx_conf_set_bufs_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, bufs), |
| NULL }, |
| |
| { ngx_string("proxy_busy_buffers_size"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_size_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, busy_buffers_size), |
| NULL }, |
| |
| #if 0 |
| |
| { ngx_string("proxy_cache_path"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1234, |
| ngx_conf_set_path_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, cache_path), |
| (void *) ngx_http_cache_cleaner_handler }, |
| |
| #endif |
| |
| { ngx_string("proxy_temp_path"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1234, |
| ngx_conf_set_path_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, temp_path), |
| (void *) ngx_garbage_collector_temp_handler }, |
| |
| { ngx_string("proxy_max_temp_file_size"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_size_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, max_temp_file_size), |
| NULL }, |
| |
| { ngx_string("proxy_temp_file_write_size"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_size_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, temp_file_write_size), |
| NULL }, |
| |
| { ngx_string("proxy_cache"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
| ngx_conf_set_flag_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, cache), |
| NULL }, |
| |
| |
| { ngx_string("proxy_busy_lock"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE13, |
| ngx_http_set_busy_lock_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, busy_lock), |
| NULL }, |
| |
| |
| { ngx_string("proxy_pass_server"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
| ngx_conf_set_flag_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, pass_server), |
| NULL }, |
| |
| { ngx_string("proxy_pass_x_accel_expires"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
| ngx_conf_set_flag_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, pass_x_accel_expires), |
| NULL }, |
| |
| { ngx_string("proxy_ignore_expires"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
| ngx_conf_set_flag_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, ignore_expires), |
| NULL }, |
| |
| { ngx_string("proxy_lm_factor"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_num_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, lm_factor), |
| &ngx_http_proxy_lm_factor_bounds }, |
| |
| { ngx_string("proxy_default_expires"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_sec_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, default_expires), |
| NULL }, |
| |
| { ngx_string("proxy_next_upstream"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY, |
| ngx_conf_set_bitmask_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, next_upstream), |
| &next_upstream_masks }, |
| |
| { ngx_string("proxy_use_stale"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY, |
| ngx_conf_set_bitmask_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, use_stale), |
| &use_stale_masks }, |
| |
| ngx_null_command |
| }; |
| |
| |
| ngx_http_module_t ngx_http_proxy_module_ctx = { |
| ngx_http_proxy_add_log_formats, /* pre conf */ |
| |
| NULL, /* create main configuration */ |
| NULL, /* init main configuration */ |
| |
| NULL, /* create server configuration */ |
| NULL, /* merge server configuration */ |
| |
| ngx_http_proxy_create_loc_conf, /* create location configration */ |
| ngx_http_proxy_merge_loc_conf /* merge location configration */ |
| }; |
| |
| |
| ngx_module_t ngx_http_proxy_module = { |
| NGX_MODULE, |
| &ngx_http_proxy_module_ctx, /* module context */ |
| ngx_http_proxy_commands, /* module directives */ |
| NGX_HTTP_MODULE, /* module type */ |
| NULL, /* init module */ |
| NULL /* init process */ |
| }; |
| |
| |
| |
| static ngx_http_log_op_name_t ngx_http_proxy_log_fmt_ops[] = { |
| { ngx_string("proxy"), 0, NULL, |
| ngx_http_proxy_log_proxy_state_getlen, |
| ngx_http_proxy_log_proxy_state }, |
| |
| #if 0 |
| { ngx_string("proxy_cache_state"), 0, ngx_http_proxy_log_cache_state }, |
| { ngx_string("proxy_reason"), 0, ngx_http_proxy_log_reason }, |
| #endif |
| |
| { ngx_null_string, 0, NULL, NULL, NULL } |
| }; |
| |
| |
| |
| ngx_http_header_t ngx_http_proxy_headers_in[] = { |
| { ngx_string("Date"), offsetof(ngx_http_proxy_headers_in_t, date) }, |
| { ngx_string("Server"), offsetof(ngx_http_proxy_headers_in_t, server) }, |
| |
| { ngx_string("Expires"), offsetof(ngx_http_proxy_headers_in_t, expires) }, |
| { ngx_string("Cache-Control"), |
| offsetof(ngx_http_proxy_headers_in_t, cache_control) }, |
| { ngx_string("ETag"), offsetof(ngx_http_proxy_headers_in_t, etag) }, |
| { ngx_string("X-Accel-Expires"), |
| offsetof(ngx_http_proxy_headers_in_t, x_accel_expires) }, |
| |
| { ngx_string("Connection"), |
| offsetof(ngx_http_proxy_headers_in_t, connection) }, |
| { ngx_string("Content-Type"), |
| offsetof(ngx_http_proxy_headers_in_t, content_type) }, |
| { ngx_string("Content-Length"), |
| offsetof(ngx_http_proxy_headers_in_t, content_length) }, |
| |
| #if (NGX_HTTP_GZIP) |
| { ngx_string("Content-Encoding"), |
| offsetof(ngx_http_proxy_headers_in_t, content_encoding) }, |
| #endif |
| |
| { ngx_string("Last-Modified"), |
| offsetof(ngx_http_proxy_headers_in_t, last_modified) }, |
| { ngx_string("Location"), |
| offsetof(ngx_http_proxy_headers_in_t, location) }, |
| { ngx_string("Accept-Ranges"), |
| offsetof(ngx_http_proxy_headers_in_t, accept_ranges) }, |
| { ngx_string("X-Pad"), offsetof(ngx_http_proxy_headers_in_t, x_pad) }, |
| |
| { ngx_null_string, 0 } |
| }; |
| |
| |
| static ngx_str_t cache_states[] = { |
| ngx_string("PASS"), |
| ngx_string("BYPASS"), |
| ngx_string("AUTH"), |
| ngx_string("PGNC"), |
| ngx_string("MISS"), |
| ngx_string("EXPR"), |
| ngx_string("AGED"), |
| ngx_string("HIT") |
| }; |
| |
| |
| static ngx_str_t cache_reasons[] = { |
| ngx_string("BPS"), |
| ngx_string("XAE"), |
| ngx_string("CTL"), |
| ngx_string("EXP"), |
| ngx_string("MVD"), |
| ngx_string("LMF"), |
| ngx_string("PDE") |
| }; |
| |
| |
| #if (NGX_PCRE) |
| static ngx_str_t ngx_http_proxy_uri = ngx_string("/"); |
| #endif |
| |
| |
| static ngx_int_t ngx_http_proxy_handler(ngx_http_request_t *r) |
| { |
| ngx_http_proxy_ctx_t *p; |
| |
| p = ngx_pcalloc(r->pool, sizeof(ngx_http_proxy_ctx_t)); |
| if (p == NULL) { |
| return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| } |
| |
| ngx_http_set_ctx(r, p, ngx_http_proxy_module); |
| |
| |
| p->lcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module); |
| p->request = r; |
| |
| /* TODO: we currently support reverse proxy only */ |
| p->accel = 1; |
| |
| if (ngx_array_init(&p->states, r->pool, p->lcf->peers->number, |
| sizeof(ngx_http_proxy_state_t)) == NGX_ERROR) |
| { |
| return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| } |
| |
| p->state = ngx_array_push(&p->states); |
| if (p->state == NULL) { |
| return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| } |
| |
| ngx_memzero(p->state, sizeof(ngx_http_proxy_state_t)); |
| |
| #if 0 |
| |
| if (!p->lcf->cache |
| || (r->method != NGX_HTTP_GET && r->method != NGX_HTTP_HEAD)) |
| { |
| p->state->cache_state = NGX_HTTP_PROXY_CACHE_PASS; |
| |
| } else if (r->bypass_cache) { |
| p->state->cache_state = NGX_HTTP_PROXY_CACHE_BYPASS; |
| |
| } else if (r->headers_in.authorization) { |
| p->state->cache_state = NGX_HTTP_PROXY_CACHE_AUTH; |
| |
| } else if (r->no_cache) { |
| p->state->cache_state = NGX_HTTP_PROXY_CACHE_PGNC; |
| p->cachable = 1; |
| |
| } else { |
| p->cachable = 1; |
| } |
| |
| |
| if (p->state->cache_state != 0) { |
| return ngx_http_proxy_request_upstream(p); |
| } |
| |
| return ngx_http_proxy_cache_get(p); |
| |
| #else |
| |
| p->state->cache_state = NGX_HTTP_PROXY_CACHE_PASS; |
| |
| return ngx_http_proxy_request_upstream(p); |
| |
| #endif |
| } |
| |
| |
| #if 0 |
| |
| static ngx_int_t ngx_http_proxy_cache_get(ngx_http_proxy_ctx_t *p) |
| { |
| u_char *last; |
| ngx_http_request_t *r; |
| ngx_http_cache_ctx_t ctx; |
| ngx_http_proxy_upstream_conf_t *u; |
| |
| r = p->request; |
| u = p->lcf->upstream; |
| |
| ctx.key.len = u->url.len + r->uri.len - u->location->len + r->args.len; |
| ctx.key.data = ngx_palloc(r->pool, ctx.key.len); |
| if (ctx.key.data == NULL) { |
| return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| } |
| |
| last = ngx_cpymem(ctx.key.data, u->url.data, u->url.len); |
| |
| last = ngx_cpymem(last, r->uri.data + u->location->len, |
| r->uri.len - u->location->len); |
| |
| if (r->args.len > 0) { |
| *(last++) = '?'; |
| last = ngx_cpymem(last, r->args.data, r->args.len); |
| } |
| |
| p->header_in = ngx_create_temp_buf(r->pool, p->lcf->header_buffer_size); |
| if (p->header_in == NULL) { |
| return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| } |
| p->header_in->tag = (ngx_buf_tag_t) &ngx_http_proxy_module; |
| |
| ctx.buf = p->header_in; |
| ctx.path = p->lcf->cache_path; |
| ctx.file = 1; |
| ctx.primary = 1; |
| |
| ngx_http_cache_get(r, &ctx); |
| |
| return ngx_http_proxy_request_upstream(p); |
| } |
| |
| #endif |
| |
| |
| void ngx_http_proxy_check_broken_connection(ngx_event_t *ev) |
| { |
| int n; |
| char buf[1]; |
| ngx_err_t err; |
| ngx_connection_t *c; |
| ngx_http_request_t *r; |
| ngx_http_proxy_ctx_t *p; |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, 0, |
| "http proxy check client, write event:%d", ev->write); |
| |
| #if (NGX_HAVE_KQUEUE) |
| |
| if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
| |
| if (!ev->pending_eof) { |
| return; |
| } |
| |
| c = ev->data; |
| r = c->data; |
| p = ngx_http_get_module_ctx(r, ngx_http_proxy_module); |
| |
| ev->eof = 1; |
| |
| if (ev->kq_errno) { |
| ev->error = 1; |
| } |
| |
| if (!p->cachable && p->upstream->peer.connection) { |
| ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno, |
| "kevent() reported that client closed " |
| "prematurely connection, " |
| "so upstream connection is closed too"); |
| ngx_http_proxy_finalize_request(p, NGX_HTTP_CLIENT_CLOSED_REQUEST); |
| return; |
| } |
| |
| ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno, |
| "kevent() reported that client closed " |
| "prematurely connection"); |
| |
| if (p->upstream == NULL || p->upstream->peer.connection == NULL) { |
| ngx_http_proxy_finalize_request(p, NGX_HTTP_CLIENT_CLOSED_REQUEST); |
| } |
| |
| return; |
| } |
| |
| #endif |
| |
| c = ev->data; |
| r = c->data; |
| p = ngx_http_get_module_ctx(r, ngx_http_proxy_module); |
| |
| n = recv(c->fd, buf, 1, MSG_PEEK); |
| |
| err = ngx_socket_errno; |
| |
| /* |
| * we do not need to disable the write event because |
| * that event has NGX_USE_CLEAR_EVENT type |
| */ |
| |
| if (ev->write && (n >= 0 || err == NGX_EAGAIN)) { |
| return; |
| } |
| |
| if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) { |
| if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) { |
| ngx_http_proxy_finalize_request(p, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| } |
| } |
| |
| if (n > 0) { |
| return; |
| } |
| |
| ev->eof = 1; |
| |
| if (n == -1) { |
| if (err == NGX_EAGAIN) { |
| return; |
| } |
| |
| ev->error = 1; |
| |
| } else { |
| /* n == 0 */ |
| err = 0; |
| } |
| |
| if (!p->cachable && p->upstream->peer.connection) { |
| ngx_log_error(NGX_LOG_INFO, ev->log, err, |
| "client closed prematurely connection, " |
| "so upstream connection is closed too"); |
| ngx_http_proxy_finalize_request(p, NGX_HTTP_CLIENT_CLOSED_REQUEST); |
| return; |
| } |
| |
| ngx_log_error(NGX_LOG_INFO, ev->log, err, |
| "client closed prematurely connection"); |
| |
| if (p->upstream == NULL || p->upstream->peer.connection == NULL) { |
| ngx_http_proxy_finalize_request(p, NGX_HTTP_CLIENT_CLOSED_REQUEST); |
| } |
| } |
| |
| |
| void ngx_http_proxy_busy_lock_handler(ngx_event_t *rev) |
| { |
| ngx_connection_t *c; |
| ngx_http_request_t *r; |
| ngx_http_proxy_ctx_t *p; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http proxy busy lock"); |
| |
| c = rev->data; |
| r = c->data; |
| p = ngx_http_get_module_ctx(r, ngx_http_proxy_module); |
| p->action = "waiting upstream in busy lock"; |
| |
| if (p->request->connection->write->eof) { |
| ngx_http_busy_unlock(p->lcf->busy_lock, &p->busy_lock); |
| ngx_http_proxy_finalize_request(p, NGX_HTTP_CLIENT_CLOSED_REQUEST); |
| return; |
| } |
| |
| if (rev->timedout) { |
| rev->timedout = 0; |
| p->busy_lock.time++; |
| p->state->bl_time = p->busy_lock.time; |
| |
| #if (NGX_HTTP_FILE_CACHE) |
| |
| if (p->state->cache_state < NGX_HTTP_PROXY_CACHE_MISS) { |
| ngx_http_proxy_upstream_busy_lock(p); |
| |
| } else { |
| ngx_http_proxy_cache_busy_lock(p); |
| } |
| #else |
| |
| ngx_http_proxy_upstream_busy_lock(p); |
| |
| #endif |
| |
| return; |
| } |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, |
| "http proxy: client sent while busy lock"); |
| |
| /* |
| * TODO: kevent() notify about error, otherwise we need to |
| * call ngx_peek(): recv(MSG_PEEK) to get errno. THINK about aio. |
| * if there's no error we need to disable event. |
| */ |
| |
| #if 0 |
| #if (NGX_HAVE_KQUEUE) |
| |
| if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT) && rev->kq_eof) { |
| ngx_http_busy_unlock(p->lcf->busy_lock, &p->busy_lock); |
| |
| ngx_del_timer(rev); |
| |
| ngx_log_error(NGX_LOG_ERR, c->log, rev->kq_errno, |
| "client() closed connection"); |
| |
| if (ngx_del_event(rev, NGX_READ_EVENT, NGX_CLOSE_EVENT) == NGX_ERROR) { |
| ngx_http_proxy_finalize_request(p, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| return; |
| } |
| |
| ngx_http_proxy_finalize_request(p, NGX_HTTP_CLIENT_CLOSED_REQUEST); |
| return; |
| } |
| |
| #endif |
| #endif |
| |
| } |
| |
| |
| void ngx_http_proxy_finalize_request(ngx_http_proxy_ctx_t *p, int rc) |
| { |
| ngx_http_request_t *r; |
| |
| r = p->request; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "finalize http proxy request"); |
| |
| if (p->upstream && p->upstream->peer.connection) { |
| ngx_http_proxy_close_connection(p); |
| } |
| |
| if (p->header_sent |
| && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE)) |
| { |
| rc = 0; |
| } |
| |
| if (p->saved_ctx) { |
| r->connection->log->data = p->saved_ctx; |
| r->connection->log->handler = p->saved_handler; |
| } |
| |
| if (p->upstream && p->upstream->event_pipe) { |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http proxy temp fd: %d", |
| p->upstream->event_pipe->temp_file->file.fd); |
| } |
| |
| if (p->cache) { |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http proxy cache fd: %d", |
| p->cache->ctx.file.fd); |
| } |
| |
| if (p->upstream && p->upstream->event_pipe) { |
| r->file.fd = p->upstream->event_pipe->temp_file->file.fd; |
| |
| } else if (p->cache) { |
| r->file.fd = p->cache->ctx.file.fd; |
| } |
| |
| if (rc == 0 && r->main == NULL) { |
| rc = ngx_http_send_last(r); |
| } |
| |
| ngx_http_finalize_request(r, rc); |
| } |
| |
| |
| void ngx_http_proxy_close_connection(ngx_http_proxy_ctx_t *p) |
| { |
| ngx_socket_t fd; |
| ngx_connection_t *c; |
| |
| c = p->upstream->peer.connection; |
| p->upstream->peer.connection = NULL; |
| |
| if (p->lcf->busy_lock) { |
| p->lcf->busy_lock->busy--; |
| } |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| "http proxy close connection: %d", c->fd); |
| |
| if (c->fd == -1) { |
| #if 0 |
| ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed"); |
| #endif |
| return; |
| } |
| |
| if (c->read->timer_set) { |
| ngx_del_timer(c->read); |
| } |
| |
| if (c->write->timer_set) { |
| ngx_del_timer(c->write); |
| } |
| |
| /* TODO: move connection to the connection pool */ |
| |
| if (ngx_del_conn) { |
| ngx_del_conn(c, NGX_CLOSE_EVENT); |
| |
| } else { |
| if (c->read->active || c->read->disabled) { |
| ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT); |
| } |
| |
| if (c->write->active || c->read->disabled) { |
| ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT); |
| } |
| } |
| |
| /* |
| * we have to clean the connection information before the closing |
| * because another thread may reopen the same file descriptor |
| * before we clean the connection |
| */ |
| |
| if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_OK) { |
| |
| if (c->read->prev) { |
| ngx_delete_posted_event(c->read); |
| } |
| |
| if (c->write->prev) { |
| ngx_delete_posted_event(c->write); |
| } |
| |
| c->read->closed = 1; |
| c->write->closed = 1; |
| |
| ngx_mutex_unlock(ngx_posted_events_mutex); |
| } |
| |
| fd = c->fd; |
| c->fd = (ngx_socket_t) -1; |
| c->data = NULL; |
| |
| if (ngx_close_socket(fd) == -1) { |
| ngx_log_error(NGX_LOG_ALERT, c->log, ngx_socket_errno, |
| ngx_close_socket_n " failed"); |
| } |
| } |
| |
| |
| u_char *ngx_http_proxy_log_error(ngx_log_t *log, u_char *buf, size_t len) |
| { |
| u_char *p; |
| ngx_int_t escape; |
| ngx_http_request_t *r; |
| ngx_peer_connection_t *peer; |
| ngx_http_proxy_log_ctx_t *ctx; |
| ngx_http_proxy_upstream_conf_t *uc; |
| |
| ctx = log->data; |
| r = ctx->proxy->request; |
| uc = ctx->proxy->lcf->upstream; |
| peer = &ctx->proxy->upstream->peer; |
| |
| p = ngx_snprintf(buf, len, |
| " while %s, client: %V, server: %V, URL: \"%V\"," |
| " upstream: http://%V%s%V", |
| ctx->proxy->action, |
| &r->connection->addr_text, |
| &r->server_name, |
| &r->unparsed_uri, |
| &peer->peers->peer[peer->cur_peer].name, |
| ctx->proxy->lcf->upstream->uri_separator, |
| &ctx->proxy->lcf->upstream->uri); |
| len -= p - buf; |
| buf = p; |
| |
| if (ctx->proxy->lcf->pass_unparsed_uri && r->valid_unparsed_uri) { |
| p = ngx_cpymem(buf, r->unparsed_uri.data + 1, r->unparsed_uri.len - 1); |
| len -= p - buf; |
| |
| return ngx_http_log_error_info(r, p, len); |
| } |
| |
| if (r->quoted_uri) { |
| escape = 2 * ngx_escape_uri(NULL, r->uri.data + uc->location->len, |
| r->uri.len - uc->location->len, |
| NGX_ESCAPE_URI); |
| } else { |
| escape = 0; |
| } |
| |
| if (escape) { |
| if (len >= r->uri.len - uc->location->len + escape) { |
| |
| ngx_escape_uri(buf, r->uri.data + uc->location->len, |
| r->uri.len - uc->location->len, NGX_ESCAPE_URI); |
| |
| buf += r->uri.len - uc->location->len + escape; |
| len -= r->uri.len - uc->location->len + escape; |
| |
| if (r->args.len) { |
| p = ngx_snprintf(buf, len, "?%V", &r->args); |
| len -= p - buf; |
| buf = p; |
| } |
| |
| return ngx_http_log_error_info(r, buf, len); |
| } |
| |
| p = ngx_palloc(r->pool, r->uri.len - uc->location->len + escape); |
| if (p == NULL) { |
| return buf; |
| } |
| |
| ngx_escape_uri(p, r->uri.data + uc->location->len, |
| r->uri.len - uc->location->len, NGX_ESCAPE_URI); |
| |
| p = ngx_cpymem(buf, p, r->uri.len - uc->location->len + escape); |
| |
| } else { |
| p = ngx_cpymem(buf, r->uri.data + uc->location->len, |
| r->uri.len - uc->location->len); |
| } |
| |
| len -= p - buf; |
| buf = p; |
| |
| if (r->args.len) { |
| p = ngx_snprintf(buf, len, "?%V", &r->args); |
| len -= p - buf; |
| buf = p; |
| } |
| |
| return ngx_http_log_error_info(r, buf, len); |
| } |
| |
| |
| static size_t ngx_http_proxy_log_proxy_state_getlen(ngx_http_request_t *r, |
| uintptr_t data) |
| { |
| ngx_http_proxy_ctx_t *p; |
| |
| p = ngx_http_get_module_err_ctx(r, ngx_http_proxy_module); |
| |
| if (p == NULL) { |
| return 1; |
| } |
| |
| return p->states.nelts * /* STUB */ 100; |
| } |
| |
| |
| static u_char *ngx_http_proxy_log_proxy_state(ngx_http_request_t *r, |
| u_char *buf, |
| ngx_http_log_op_t *op) |
| { |
| ngx_uint_t i; |
| ngx_http_proxy_ctx_t *p; |
| ngx_http_proxy_state_t *state; |
| |
| p = ngx_http_get_module_err_ctx(r, ngx_http_proxy_module); |
| |
| if (p == NULL) { |
| *buf = '-'; |
| return buf + 1; |
| } |
| |
| i = 0; |
| state = p->states.elts; |
| |
| for ( ;; ) { |
| if (state[i].cache_state == 0) { |
| *buf++ = '-'; |
| |
| } else { |
| buf = ngx_cpymem(buf, cache_states[state[i].cache_state - 1].data, |
| cache_states[state[i].cache_state - 1].len); |
| } |
| |
| *buf++ = '/'; |
| |
| if (state[i].expired == 0) { |
| *buf++ = '-'; |
| |
| } else { |
| buf = ngx_sprintf(buf, "%T", state[i].expired); |
| } |
| |
| *buf++ = '/'; |
| |
| if (state[i].bl_time == 0) { |
| *buf++ = '-'; |
| |
| } else { |
| buf = ngx_sprintf(buf, "%T", state[i].bl_time); |
| } |
| |
| *buf++ = '/'; |
| |
| *buf++ = '*'; |
| |
| *buf++ = ' '; |
| |
| if (state[i].status == 0) { |
| *buf++ = '-'; |
| |
| } else { |
| buf = ngx_sprintf(buf, "%ui", state[i].status); |
| } |
| |
| *buf++ = '/'; |
| |
| if (state[i].reason == 0) { |
| *buf++ = '-'; |
| |
| } else { |
| buf = ngx_cpymem(buf, cache_reasons[state[i].reason - 1].data, |
| cache_reasons[state[i].reason - 1].len); |
| } |
| |
| *buf++ = '/'; |
| |
| if (state[i].reason < NGX_HTTP_PROXY_CACHE_XAE) { |
| *buf++ = '-'; |
| |
| } else { |
| buf = ngx_sprintf(buf, "%T", state[i].expires); |
| } |
| |
| *buf++ = ' '; |
| *buf++ = '*'; |
| |
| if (++i == p->states.nelts) { |
| return buf; |
| } |
| |
| *buf++ = ','; |
| *buf++ = ' '; |
| } |
| } |
| |
| |
| #if 0 |
| |
| static u_char *ngx_http_proxy_log_cache_state(ngx_http_request_t *r, |
| u_char *buf, uintptr_t data) |
| { |
| ngx_uint_t i; |
| ngx_http_proxy_ctx_t *p; |
| ngx_http_proxy_state_t *state; |
| |
| p = ngx_http_get_module_err_ctx(r, ngx_http_proxy_module); |
| |
| if (p == NULL || p->state->cache_state == 0) { |
| if (buf == NULL) { |
| return (u_char *) 1; |
| } |
| |
| *buf = '-'; |
| return buf + 1; |
| } |
| |
| if (buf == NULL) { |
| /* find the request line length */ |
| return (u_char *) (p->states.nelts * sizeof("BYPASS") - 1); |
| } |
| |
| i = 0; |
| state = p->states.elts; |
| |
| for ( ;; ) { |
| buf = ngx_cpymem(buf, cache_states[state[i].cache_state - 1].data, |
| cache_states[state[i].cache_state - 1].len); |
| |
| if (++i == p->states.nelts) { |
| return buf; |
| } |
| |
| *buf++ = ','; |
| *buf++ = ' '; |
| } |
| } |
| |
| |
| static u_char *ngx_http_proxy_log_reason(ngx_http_request_t *r, u_char *buf, |
| uintptr_t data) |
| { |
| ngx_uint_t i; |
| ngx_http_proxy_ctx_t *p; |
| ngx_http_proxy_state_t *state; |
| |
| p = ngx_http_get_module_err_ctx(r, ngx_http_proxy_module); |
| |
| if (p == NULL || p->state->reason == 0) { |
| if (buf == NULL) { |
| return (u_char *) 1; |
| } |
| |
| *buf = '-'; |
| return buf + 1; |
| } |
| |
| if (buf == NULL) { |
| /* find the request line length */ |
| return (u_char *) (p->states.nelts * sizeof("BPS") - 1); |
| } |
| |
| i = 0; |
| state = p->states.elts; |
| |
| for ( ;; ) { |
| buf = ngx_cpymem(buf, cache_reasons[state[i].reason - 1].data, |
| cache_reasons[state[i].reason - 1].len); |
| |
| if (++i == p->states.nelts) { |
| return buf; |
| } |
| |
| *buf++ = ','; |
| *buf++ = ' '; |
| } |
| } |
| |
| #endif |
| |
| |
| static ngx_int_t ngx_http_proxy_add_log_formats(ngx_conf_t *cf) |
| { |
| ngx_http_log_op_name_t *op; |
| |
| for (op = ngx_http_proxy_log_fmt_ops; op->name.len; op++) { /* void */ } |
| op->run = NULL; |
| |
| for (op = ngx_http_log_fmt_ops; op->run; op++) { |
| if (op->name.len == 0) { |
| op = (ngx_http_log_op_name_t *) op->run; |
| } |
| } |
| |
| op->run = (ngx_http_log_op_run_pt) ngx_http_proxy_log_fmt_ops; |
| |
| return NGX_OK; |
| } |
| |
| |
| static void *ngx_http_proxy_create_loc_conf(ngx_conf_t *cf) |
| { |
| ngx_http_proxy_loc_conf_t *conf; |
| |
| conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_proxy_loc_conf_t)); |
| if (conf == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| /* |
| * set by ngx_pcalloc(): |
| * |
| * conf->bufs.num = 0; |
| * conf->path = NULL; |
| * conf->next_upstream = 0; |
| * conf->use_stale = 0; |
| * conf->upstreams = NULL; |
| * conf->peers = NULL; |
| * conf->cache_path = NULL; |
| * conf->temp_path = NULL; |
| * conf->x_vars; |
| * conf->busy_lock = NULL; |
| */ |
| |
| conf->connect_timeout = NGX_CONF_UNSET_MSEC; |
| conf->send_timeout = NGX_CONF_UNSET_MSEC; |
| conf->send_lowat = NGX_CONF_UNSET_SIZE; |
| |
| conf->pass_unparsed_uri = NGX_CONF_UNSET; |
| conf->preserve_host = NGX_CONF_UNSET; |
| conf->set_x_url = NGX_CONF_UNSET; |
| conf->set_x_real_ip = NGX_CONF_UNSET; |
| conf->add_x_forwarded_for = NGX_CONF_UNSET; |
| |
| conf->header_buffer_size = NGX_CONF_UNSET_SIZE; |
| conf->read_timeout = NGX_CONF_UNSET_MSEC; |
| conf->busy_buffers_size = NGX_CONF_UNSET_SIZE; |
| |
| conf->max_temp_file_size = NGX_CONF_UNSET_SIZE; |
| conf->temp_file_write_size = NGX_CONF_UNSET_SIZE; |
| |
| /* "proxy_cyclic_temp_file" is disabled */ |
| conf->cyclic_temp_file = 0; |
| |
| conf->cache = NGX_CONF_UNSET; |
| |
| conf->pass_server = NGX_CONF_UNSET; |
| conf->pass_x_accel_expires = NGX_CONF_UNSET; |
| conf->ignore_expires = NGX_CONF_UNSET; |
| conf->lm_factor = NGX_CONF_UNSET; |
| conf->default_expires = NGX_CONF_UNSET; |
| |
| return conf; |
| } |
| |
| |
| static char *ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf, |
| void *parent, void *child) |
| { |
| ngx_http_proxy_loc_conf_t *prev = parent; |
| ngx_http_proxy_loc_conf_t *conf = child; |
| |
| size_t size; |
| |
| ngx_conf_merge_msec_value(conf->connect_timeout, |
| prev->connect_timeout, 60000); |
| ngx_conf_merge_msec_value(conf->send_timeout, prev->send_timeout, 60000); |
| ngx_conf_merge_size_value(conf->send_lowat, prev->send_lowat, 0); |
| |
| ngx_conf_merge_value(conf->pass_unparsed_uri, prev->pass_unparsed_uri, 0); |
| |
| if (conf->pass_unparsed_uri && conf->upstream->location->len > 1) { |
| ngx_log_error(NGX_LOG_EMERG, cf->log, 0, |
| "\"proxy_pass_unparsed_uri\" can be set for " |
| "location \"/\" or given by regular expression."); |
| return NGX_CONF_ERROR; |
| } |
| |
| ngx_conf_merge_value(conf->preserve_host, prev->preserve_host, 0); |
| ngx_conf_merge_value(conf->set_x_url, prev->set_x_url, 0); |
| ngx_conf_merge_value(conf->set_x_real_ip, prev->set_x_real_ip, 0); |
| ngx_conf_merge_value(conf->add_x_forwarded_for, |
| prev->add_x_forwarded_for, 0); |
| |
| ngx_conf_merge_msec_value(conf->read_timeout, prev->read_timeout, 60000); |
| |
| ngx_conf_merge_size_value(conf->header_buffer_size, |
| prev->header_buffer_size, (size_t) ngx_pagesize); |
| |
| ngx_conf_merge_bufs_value(conf->bufs, prev->bufs, 8, ngx_pagesize); |
| |
| if (conf->bufs.num < 2) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "there must be at least 2 \"proxy_buffers\""); |
| return NGX_CONF_ERROR; |
| } |
| |
| size = conf->header_buffer_size; |
| if (size < conf->bufs.size) { |
| size = conf->bufs.size; |
| } |
| |
| |
| ngx_conf_merge_size_value(conf->busy_buffers_size, |
| prev->busy_buffers_size, NGX_CONF_UNSET_SIZE); |
| |
| if (conf->busy_buffers_size == NGX_CONF_UNSET_SIZE) { |
| conf->busy_buffers_size = 2 * size; |
| |
| } else if (conf->busy_buffers_size < size) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "\"proxy_busy_buffers_size\" must be equal or bigger than " |
| "maximum of the value of \"proxy_header_buffer_size\" and " |
| "one of the \"proxy_buffers\""); |
| |
| return NGX_CONF_ERROR; |
| |
| } else if (conf->busy_buffers_size > (conf->bufs.num - 1) * conf->bufs.size) |
| { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "\"proxy_busy_buffers_size\" must be less than " |
| "the size of all \"proxy_buffers\" minus one buffer"); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| |
| ngx_conf_merge_size_value(conf->temp_file_write_size, |
| prev->temp_file_write_size, NGX_CONF_UNSET_SIZE); |
| |
| if (conf->temp_file_write_size == NGX_CONF_UNSET_SIZE) { |
| conf->temp_file_write_size = 2 * size; |
| |
| } else if (conf->temp_file_write_size < size) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "\"proxy_temp_file_write_size\" must be equal or bigger than " |
| "maximum of the value of \"proxy_header_buffer_size\" and " |
| "one of the \"proxy_buffers\""); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| |
| ngx_conf_merge_size_value(conf->max_temp_file_size, |
| prev->max_temp_file_size, NGX_CONF_UNSET_SIZE); |
| |
| if (conf->max_temp_file_size == NGX_CONF_UNSET_SIZE) { |
| |
| /* |
| * "proxy_max_temp_file_size" is set to 1G for reverse proxy, |
| * it should be much less in the generic proxy |
| */ |
| |
| conf->max_temp_file_size = 1024 * 1024 * 1024; |
| |
| #if 0 |
| conf->max_temp_file_size = 2 * size; |
| #endif |
| |
| |
| } else if (conf->max_temp_file_size != 0 |
| && conf->max_temp_file_size < size) |
| { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "\"proxy_max_temp_file_size\" must be equal to zero to disable " |
| "the temporary files usage or must be equal or bigger than " |
| "maximum of the value of \"proxy_header_buffer_size\" and " |
| "one of the \"proxy_buffers\""); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| |
| ngx_conf_merge_bitmask_value(conf->next_upstream, prev->next_upstream, |
| (NGX_CONF_BITMASK_SET |
| |NGX_HTTP_PROXY_FT_ERROR |
| |NGX_HTTP_PROXY_FT_TIMEOUT)); |
| |
| ngx_conf_merge_bitmask_value(conf->use_stale, prev->use_stale, |
| NGX_CONF_BITMASK_SET); |
| |
| #if 0 |
| ngx_conf_merge_path_value(conf->cache_path, prev->cache_path, |
| NGX_HTTP_PROXY_CACHE_PATH, 1, 2, 0, |
| ngx_garbage_collector_temp_handler, cf); |
| #endif |
| |
| ngx_conf_merge_path_value(conf->temp_path, prev->temp_path, |
| NGX_HTTP_PROXY_TEMP_PATH, 1, 2, 0, |
| ngx_garbage_collector_temp_handler, cf); |
| |
| ngx_conf_merge_value(conf->cache, prev->cache, 0); |
| |
| |
| /* conf->cache must be merged */ |
| |
| if (conf->busy_lock == NULL) { |
| conf->busy_lock = prev->busy_lock; |
| } |
| |
| if (conf->busy_lock && conf->cache && conf->busy_lock->md5 == NULL) { |
| |
| /* ngx_calloc_shared() */ |
| conf->busy_lock->md5_mask = |
| ngx_pcalloc(cf->pool, (conf->busy_lock->max_busy + 7) / 8); |
| if (conf->busy_lock->md5_mask == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| /* 16 bytes are 128 bits of the md5 */ |
| |
| /* ngx_alloc_shared() */ |
| conf->busy_lock->md5 = ngx_palloc(cf->pool, |
| 16 * conf->busy_lock->max_busy); |
| if (conf->busy_lock->md5 == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| } |
| |
| |
| ngx_conf_merge_value(conf->pass_server, prev->pass_server, 0); |
| ngx_conf_merge_value(conf->pass_x_accel_expires, |
| prev->pass_x_accel_expires, 0); |
| ngx_conf_merge_value(conf->ignore_expires, prev->ignore_expires, 0); |
| ngx_conf_merge_value(conf->lm_factor, prev->lm_factor, 0); |
| ngx_conf_merge_sec_value(conf->default_expires, prev->default_expires, 0); |
| |
| if (conf->x_vars == NULL) { |
| conf->x_vars = prev->x_vars; |
| } |
| |
| return NULL; |
| } |
| |
| |
| static char *ngx_http_proxy_set_pass(ngx_conf_t *cf, ngx_command_t *cmd, |
| void *conf) |
| { |
| ngx_http_proxy_loc_conf_t *lcf = conf; |
| |
| ngx_str_t *value, *url; |
| ngx_inet_upstream_t inet_upstream; |
| ngx_http_core_loc_conf_t *clcf; |
| #if (NGX_HAVE_UNIX_DOMAIN) |
| ngx_unix_domain_upstream_t unix_upstream; |
| #endif |
| |
| value = cf->args->elts; |
| |
| url = &value[1]; |
| |
| if (ngx_strncasecmp(url->data, "http://", 7) != 0) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid URL prefix"); |
| return NGX_CONF_ERROR; |
| } |
| |
| lcf->upstream = ngx_pcalloc(cf->pool, |
| sizeof(ngx_http_proxy_upstream_conf_t)); |
| if (lcf->upstream == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| lcf->upstream->url = *url; |
| |
| if (ngx_strncasecmp(url->data + 7, "unix:", 5) == 0) { |
| |
| #if (NGX_HAVE_UNIX_DOMAIN) |
| |
| ngx_memzero(&unix_upstream, sizeof(ngx_unix_domain_upstream_t)); |
| |
| unix_upstream.name = *url; |
| unix_upstream.url.len = url->len - 7; |
| unix_upstream.url.data = url->data + 7; |
| unix_upstream.uri_part = 1; |
| |
| lcf->peers = ngx_unix_upstream_parse(cf, &unix_upstream); |
| if (lcf->peers == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| lcf->upstream->host_header.len = sizeof("localhost") - 1; |
| lcf->upstream->host_header.data = (u_char *) "localhost"; |
| lcf->upstream->uri = unix_upstream.uri; |
| lcf->upstream->uri_separator = ":"; |
| lcf->upstream->default_port = 1; |
| |
| #else |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "the unix domain sockets are not supported " |
| "on this platform"); |
| return NGX_CONF_ERROR; |
| |
| #endif |
| |
| } else { |
| ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t)); |
| |
| inet_upstream.name = *url; |
| inet_upstream.url.len = url->len - 7; |
| inet_upstream.url.data = url->data + 7; |
| inet_upstream.default_port_value = 80; |
| inet_upstream.uri_part = 1; |
| |
| lcf->peers = ngx_inet_upstream_parse(cf, &inet_upstream); |
| if (lcf->peers == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| lcf->upstream->host_header = inet_upstream.host_header; |
| lcf->upstream->port_text = inet_upstream.port_text; |
| lcf->upstream->uri = inet_upstream.uri; |
| lcf->upstream->uri_separator = ""; |
| lcf->upstream->default_port = inet_upstream.default_port; |
| } |
| |
| clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); |
| |
| clcf->handler = ngx_http_proxy_handler; |
| |
| #if (NGX_PCRE) |
| lcf->upstream->location = clcf->regex ? &ngx_http_proxy_uri : &clcf->name; |
| #else |
| lcf->upstream->location = &clcf->name; |
| #endif |
| |
| if (clcf->name.data[clcf->name.len - 1] == '/') { |
| clcf->auto_redirect = 1; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static char *ngx_http_proxy_set_x_var(ngx_conf_t *cf, ngx_command_t *cmd, |
| void *conf) |
| { |
| ngx_http_proxy_loc_conf_t *lcf = conf; |
| |
| ngx_uint_t i, *index; |
| ngx_str_t *value; |
| ngx_http_variable_t *var; |
| ngx_http_core_main_conf_t *cmcf; |
| |
| if (lcf->x_vars == NULL) { |
| lcf->x_vars = ngx_array_create(cf->pool, 4, |
| sizeof(ngx_http_variable_t *)); |
| if (lcf->x_vars == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| } |
| |
| cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
| |
| value = cf->args->elts; |
| |
| var = cmcf->variables.elts; |
| for (i = 0; i < cmcf->variables.nelts; i++) { |
| if (ngx_strcasecmp(var[i].name.data, value[1].data) == 0) { |
| |
| index = ngx_array_push(lcf->x_vars); |
| if (index == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| *index = var[i].index; |
| return NGX_CONF_OK; |
| } |
| } |
| |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "unknown variable name \"%V\"", &value[1]); |
| return NGX_CONF_ERROR; |
| } |
| |
| |
| static char *ngx_http_proxy_lowat_check(ngx_conf_t *cf, void *post, void *data) |
| { |
| #if (NGX_FREEBSD) |
| ssize_t *np = data; |
| |
| if (*np >= ngx_freebsd_net_inet_tcp_sendspace) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "\"proxy_send_lowat\" must be less than %d " |
| "(sysctl net.inet.tcp.sendspace)", |
| ngx_freebsd_net_inet_tcp_sendspace); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| #elif !(NGX_HAVE_SO_SNDLOWAT) |
| ssize_t *np = data; |
| |
| ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
| "\"proxy_send_lowat\" is not supported, ignored"); |
| |
| *np = 0; |
| |
| #endif |
| |
| return NGX_CONF_OK; |
| } |
