| /* | |
| * 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_header0_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_rd_check_broken_connection(ngx_http_request_t *r) | |
| { | |
| ngx_http_proxy_check_broken_connection(r, r->connection->read); | |
| } | |
| void ngx_http_proxy_wr_check_broken_connection(ngx_http_request_t *r) | |
| { | |
| ngx_http_proxy_check_broken_connection(r, r->connection->read); | |
| } | |
| void ngx_http_proxy_check_broken_connection(ngx_http_request_t *r, | |
| ngx_event_t *ev) | |
| { | |
| int n; | |
| char buf[1]; | |
| ngx_err_t err; | |
| ngx_connection_t *c; | |
| 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 = r->connection; | |
| 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 = r->connection; | |
| 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 (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; | |
| } | |
| if (conf->peers == NULL) { | |
| conf->peers = prev->peers; | |
| conf->upstream = prev->upstream; | |
| } | |
| 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; | |
| } |