| |
| /* |
| * Copyright (C) Igor Sysoev |
| */ |
| |
| |
| #include <ngx_config.h> |
| #include <ngx_core.h> |
| #include <ngx_http.h> |
| |
| |
| typedef struct ngx_http_proxy_redirect_s ngx_http_proxy_redirect_t; |
| |
| typedef ngx_int_t (*ngx_http_proxy_redirect_pt)(ngx_http_request_t *r, |
| ngx_table_elt_t *h, size_t prefix, ngx_http_proxy_redirect_t *pr); |
| |
| struct ngx_http_proxy_redirect_s { |
| ngx_http_proxy_redirect_pt handler; |
| ngx_str_t redirect; |
| |
| union { |
| ngx_str_t text; |
| |
| struct { |
| void *lengths; |
| void *values; |
| } vars; |
| |
| void *regex; |
| } replacement; |
| }; |
| |
| |
| typedef struct { |
| ngx_str_t key_start; |
| ngx_str_t schema; |
| ngx_str_t host_header; |
| ngx_str_t port; |
| ngx_str_t uri; |
| } ngx_http_proxy_vars_t; |
| |
| |
| typedef struct { |
| ngx_http_upstream_conf_t upstream; |
| |
| ngx_array_t *flushes; |
| ngx_array_t *body_set_len; |
| ngx_array_t *body_set; |
| ngx_array_t *headers_set_len; |
| ngx_array_t *headers_set; |
| ngx_hash_t headers_set_hash; |
| |
| ngx_array_t *headers_source; |
| ngx_array_t *headers_names; |
| |
| ngx_array_t *proxy_lengths; |
| ngx_array_t *proxy_values; |
| |
| ngx_array_t *redirects; |
| |
| ngx_str_t body_source; |
| |
| ngx_str_t method; |
| ngx_str_t location; |
| ngx_str_t url; |
| |
| #if (NGX_HTTP_CACHE) |
| ngx_http_complex_value_t cache_key; |
| #endif |
| |
| ngx_http_proxy_vars_t vars; |
| |
| ngx_flag_t redirect; |
| |
| ngx_uint_t headers_hash_max_size; |
| ngx_uint_t headers_hash_bucket_size; |
| } ngx_http_proxy_loc_conf_t; |
| |
| |
| typedef struct { |
| ngx_uint_t status; |
| ngx_uint_t status_count; |
| u_char *status_start; |
| u_char *status_end; |
| |
| ngx_http_proxy_vars_t vars; |
| |
| size_t internal_body_length; |
| } ngx_http_proxy_ctx_t; |
| |
| |
| #define NGX_HTTP_PROXY_PARSE_NO_HEADER 20 |
| |
| |
| static ngx_int_t ngx_http_proxy_eval(ngx_http_request_t *r, |
| ngx_http_proxy_ctx_t *ctx, ngx_http_proxy_loc_conf_t *plcf); |
| #if (NGX_HTTP_CACHE) |
| static ngx_int_t ngx_http_proxy_create_key(ngx_http_request_t *r); |
| #endif |
| static ngx_int_t ngx_http_proxy_create_request(ngx_http_request_t *r); |
| static ngx_int_t ngx_http_proxy_reinit_request(ngx_http_request_t *r); |
| static ngx_int_t ngx_http_proxy_process_status_line(ngx_http_request_t *r); |
| static ngx_int_t ngx_http_proxy_parse_status_line(ngx_http_request_t *r, |
| ngx_http_proxy_ctx_t *ctx); |
| static ngx_int_t ngx_http_proxy_process_header(ngx_http_request_t *r); |
| static void ngx_http_proxy_abort_request(ngx_http_request_t *r); |
| static void ngx_http_proxy_finalize_request(ngx_http_request_t *r, |
| ngx_int_t rc); |
| |
| static ngx_int_t ngx_http_proxy_host_variable(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_proxy_port_variable(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t |
| ngx_http_proxy_add_x_forwarded_for_variable(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t |
| ngx_http_proxy_internal_body_length_variable(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_proxy_rewrite_redirect(ngx_http_request_t *r, |
| ngx_table_elt_t *h, size_t prefix); |
| |
| static ngx_int_t ngx_http_proxy_add_variables(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 ngx_int_t ngx_http_proxy_merge_headers(ngx_conf_t *cf, |
| ngx_http_proxy_loc_conf_t *conf, ngx_http_proxy_loc_conf_t *prev); |
| |
| static char *ngx_http_proxy_pass(ngx_conf_t *cf, ngx_command_t *cmd, |
| void *conf); |
| static char *ngx_http_proxy_redirect(ngx_conf_t *cf, ngx_command_t *cmd, |
| void *conf); |
| static char *ngx_http_proxy_store(ngx_conf_t *cf, ngx_command_t *cmd, |
| void *conf); |
| #if (NGX_HTTP_CACHE) |
| static char *ngx_http_proxy_cache(ngx_conf_t *cf, ngx_command_t *cmd, |
| void *conf); |
| static char *ngx_http_proxy_cache_key(ngx_conf_t *cf, ngx_command_t *cmd, |
| void *conf); |
| #endif |
| |
| static char *ngx_http_proxy_lowat_check(ngx_conf_t *cf, void *post, void *data); |
| |
| static char *ngx_http_proxy_upstream_max_fails_unsupported(ngx_conf_t *cf, |
| ngx_command_t *cmd, void *conf); |
| static char *ngx_http_proxy_upstream_fail_timeout_unsupported(ngx_conf_t *cf, |
| ngx_command_t *cmd, void *conf); |
| |
| #if (NGX_HTTP_SSL) |
| static ngx_int_t ngx_http_proxy_set_ssl(ngx_conf_t *cf, |
| ngx_http_proxy_loc_conf_t *plcf); |
| #endif |
| static void ngx_http_proxy_set_vars(ngx_url_t *u, ngx_http_proxy_vars_t *v); |
| |
| |
| static ngx_conf_post_t ngx_http_proxy_lowat_post = |
| { ngx_http_proxy_lowat_check }; |
| |
| |
| static ngx_conf_bitmask_t ngx_http_proxy_next_upstream_masks[] = { |
| { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR }, |
| { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT }, |
| { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER }, |
| { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 }, |
| { ngx_string("http_502"), NGX_HTTP_UPSTREAM_FT_HTTP_502 }, |
| { ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 }, |
| { ngx_string("http_504"), NGX_HTTP_UPSTREAM_FT_HTTP_504 }, |
| { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, |
| { ngx_string("updating"), NGX_HTTP_UPSTREAM_FT_UPDATING }, |
| { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF }, |
| { ngx_null_string, 0 } |
| }; |
| |
| |
| static ngx_conf_bitmask_t ngx_http_proxy_ignore_headers_masks[] = { |
| { ngx_string("X-Accel-Redirect"), NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT }, |
| { ngx_string("X-Accel-Expires"), NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES }, |
| { ngx_string("Expires"), NGX_HTTP_UPSTREAM_IGN_EXPIRES }, |
| { ngx_string("Cache-Control"), NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL }, |
| { ngx_null_string, 0 } |
| }; |
| |
| |
| ngx_module_t ngx_http_proxy_module; |
| |
| |
| static ngx_command_t ngx_http_proxy_commands[] = { |
| |
| { ngx_string("proxy_pass"), |
| NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_HTTP_LMT_CONF|NGX_CONF_TAKE1, |
| ngx_http_proxy_pass, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| 0, |
| NULL }, |
| |
| { ngx_string("proxy_redirect"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, |
| ngx_http_proxy_redirect, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| 0, |
| NULL }, |
| |
| { ngx_string("proxy_store"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_http_proxy_store, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| 0, |
| NULL }, |
| |
| { ngx_string("proxy_store_access"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE123, |
| ngx_conf_set_access_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, upstream.store_access), |
| NULL }, |
| |
| { ngx_string("proxy_buffering"), |
| 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, upstream.buffering), |
| NULL }, |
| |
| { ngx_string("proxy_ignore_client_abort"), |
| 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, upstream.ignore_client_abort), |
| 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, upstream.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, upstream.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, upstream.send_lowat), |
| &ngx_http_proxy_lowat_post }, |
| |
| { ngx_string("proxy_intercept_errors"), |
| 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, upstream.intercept_errors), |
| NULL }, |
| |
| { ngx_string("proxy_set_header"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, |
| ngx_conf_set_keyval_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, headers_source), |
| NULL }, |
| |
| { ngx_string("proxy_headers_hash_max_size"), |
| 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, headers_hash_max_size), |
| NULL }, |
| |
| { ngx_string("proxy_headers_hash_bucket_size"), |
| 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, headers_hash_bucket_size), |
| NULL }, |
| |
| { ngx_string("proxy_set_body"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_str_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, body_source), |
| NULL }, |
| |
| { ngx_string("proxy_method"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_str_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, method), |
| NULL }, |
| |
| { ngx_string("proxy_pass_request_headers"), |
| 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, upstream.pass_request_headers), |
| NULL }, |
| |
| { ngx_string("proxy_pass_request_body"), |
| 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, upstream.pass_request_body), |
| NULL }, |
| |
| { ngx_string("proxy_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, upstream.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, upstream.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, upstream.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, upstream.busy_buffers_size_conf), |
| NULL }, |
| |
| #if (NGX_HTTP_CACHE) |
| |
| { ngx_string("proxy_cache"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
| ngx_http_proxy_cache, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| 0, |
| NULL }, |
| |
| { ngx_string("proxy_cache_key"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
| ngx_http_proxy_cache_key, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| 0, |
| NULL }, |
| |
| { ngx_string("proxy_cache_path"), |
| NGX_HTTP_MAIN_CONF|NGX_CONF_2MORE, |
| ngx_http_file_cache_set_slot, |
| 0, |
| 0, |
| &ngx_http_proxy_module }, |
| |
| { ngx_string("proxy_cache_valid"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| ngx_http_file_cache_valid_set_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, upstream.cache_valid), |
| NULL }, |
| |
| { ngx_string("proxy_cache_min_uses"), |
| 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, upstream.cache_min_uses), |
| NULL }, |
| |
| { ngx_string("proxy_cache_use_stale"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| ngx_conf_set_bitmask_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, upstream.cache_use_stale), |
| &ngx_http_proxy_next_upstream_masks }, |
| |
| { ngx_string("proxy_cache_methods"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| ngx_conf_set_bitmask_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, upstream.cache_methods), |
| &ngx_http_upstream_cache_method_mask }, |
| |
| #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, upstream.temp_path), |
| NULL }, |
| |
| { 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, upstream.max_temp_file_size_conf), |
| 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, upstream.temp_file_write_size_conf), |
| NULL }, |
| |
| { ngx_string("proxy_next_upstream"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| ngx_conf_set_bitmask_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, upstream.next_upstream), |
| &ngx_http_proxy_next_upstream_masks }, |
| |
| { ngx_string("proxy_upstream_max_fails"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_http_proxy_upstream_max_fails_unsupported, |
| 0, |
| 0, |
| NULL }, |
| |
| { ngx_string("proxy_upstream_fail_timeout"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_http_proxy_upstream_fail_timeout_unsupported, |
| 0, |
| 0, |
| NULL }, |
| |
| { ngx_string("proxy_pass_header"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
| ngx_conf_set_str_array_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, upstream.pass_headers), |
| NULL }, |
| |
| { ngx_string("proxy_hide_header"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
| ngx_conf_set_str_array_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, upstream.hide_headers), |
| NULL }, |
| |
| { ngx_string("proxy_ignore_headers"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
| ngx_conf_set_bitmask_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_proxy_loc_conf_t, upstream.ignore_headers), |
| &ngx_http_proxy_ignore_headers_masks }, |
| |
| #if (NGX_HTTP_SSL) |
| |
| { ngx_string("proxy_ssl_session_reuse"), |
| 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, upstream.ssl_session_reuse), |
| NULL }, |
| |
| #endif |
| |
| ngx_null_command |
| }; |
| |
| |
| static ngx_http_module_t ngx_http_proxy_module_ctx = { |
| ngx_http_proxy_add_variables, /* preconfiguration */ |
| NULL, /* postconfiguration */ |
| |
| 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_V1, |
| &ngx_http_proxy_module_ctx, /* module context */ |
| ngx_http_proxy_commands, /* module directives */ |
| NGX_HTTP_MODULE, /* module type */ |
| NULL, /* init master */ |
| NULL, /* init module */ |
| NULL, /* init process */ |
| NULL, /* init thread */ |
| NULL, /* exit thread */ |
| NULL, /* exit process */ |
| NULL, /* exit master */ |
| NGX_MODULE_V1_PADDING |
| }; |
| |
| |
| static char ngx_http_proxy_version[] = " HTTP/1.0" CRLF; |
| |
| |
| static ngx_keyval_t ngx_http_proxy_headers[] = { |
| { ngx_string("Host"), ngx_string("$proxy_host") }, |
| { ngx_string("Connection"), ngx_string("close") }, |
| { ngx_string("Keep-Alive"), ngx_string("") }, |
| { ngx_string("Expect"), ngx_string("") }, |
| { ngx_null_string, ngx_null_string } |
| }; |
| |
| |
| static ngx_str_t ngx_http_proxy_hide_headers[] = { |
| ngx_string("Date"), |
| ngx_string("Server"), |
| ngx_string("X-Pad"), |
| ngx_string("X-Accel-Expires"), |
| ngx_string("X-Accel-Redirect"), |
| ngx_string("X-Accel-Limit-Rate"), |
| ngx_string("X-Accel-Buffering"), |
| ngx_string("X-Accel-Charset"), |
| ngx_null_string |
| }; |
| |
| |
| #if (NGX_HTTP_CACHE) |
| |
| static ngx_keyval_t ngx_http_proxy_cache_headers[] = { |
| { ngx_string("Host"), ngx_string("$proxy_host") }, |
| { ngx_string("Connection"), ngx_string("close") }, |
| { ngx_string("Keep-Alive"), ngx_string("") }, |
| { ngx_string("Expect"), ngx_string("") }, |
| { ngx_string("If-Modified-Since"), ngx_string("") }, |
| { ngx_string("If-Unmodified-Since"), ngx_string("") }, |
| { ngx_string("If-Match-None"), ngx_string("") }, |
| { ngx_string("If-Match"), ngx_string("") }, |
| { ngx_string("Range"), ngx_string("") }, |
| { ngx_string("If-Range"), ngx_string("") }, |
| { ngx_null_string, ngx_null_string } |
| }; |
| |
| |
| static ngx_str_t ngx_http_proxy_hide_cache_headers[] = { |
| ngx_string("Date"), |
| ngx_string("Server"), |
| ngx_string("X-Pad"), |
| ngx_string("X-Accel-Expires"), |
| ngx_string("X-Accel-Redirect"), |
| ngx_string("X-Accel-Limit-Rate"), |
| ngx_string("X-Accel-Buffering"), |
| ngx_string("X-Accel-Charset"), |
| ngx_string("Set-Cookie"), |
| ngx_string("P3P"), |
| ngx_null_string |
| }; |
| |
| #endif |
| |
| |
| static ngx_http_variable_t ngx_http_proxy_vars[] = { |
| |
| { ngx_string("proxy_host"), NULL, ngx_http_proxy_host_variable, 0, |
| NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, |
| |
| { ngx_string("proxy_port"), NULL, ngx_http_proxy_port_variable, 0, |
| NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, |
| |
| { ngx_string("proxy_add_x_forwarded_for"), NULL, |
| ngx_http_proxy_add_x_forwarded_for_variable, 0, NGX_HTTP_VAR_NOHASH, 0 }, |
| |
| #if 0 |
| { ngx_string("proxy_add_via"), NULL, NULL, 0, NGX_HTTP_VAR_NOHASH, 0 }, |
| #endif |
| |
| { ngx_string("proxy_internal_body_length"), NULL, |
| ngx_http_proxy_internal_body_length_variable, 0, NGX_HTTP_VAR_NOHASH, 0 }, |
| |
| { ngx_null_string, NULL, NULL, 0, 0, 0 } |
| }; |
| |
| |
| static ngx_path_init_t ngx_http_proxy_temp_path = { |
| ngx_string(NGX_HTTP_PROXY_TEMP_PATH), { 1, 2, 0 } |
| }; |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_handler(ngx_http_request_t *r) |
| { |
| ngx_int_t rc; |
| ngx_http_upstream_t *u; |
| ngx_http_proxy_ctx_t *ctx; |
| ngx_http_proxy_loc_conf_t *plcf; |
| |
| if (ngx_http_upstream_create(r) != NGX_OK) { |
| return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| } |
| |
| ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_proxy_ctx_t)); |
| if (ctx == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ngx_http_set_ctx(r, ctx, ngx_http_proxy_module); |
| |
| plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module); |
| |
| u = r->upstream; |
| |
| if (plcf->proxy_lengths == 0) { |
| ctx->vars = plcf->vars; |
| u->schema = plcf->vars.schema; |
| #if (NGX_HTTP_SSL) |
| u->ssl = (plcf->upstream.ssl != NULL); |
| #endif |
| |
| } else { |
| if (ngx_http_proxy_eval(r, ctx, plcf) != NGX_OK) { |
| return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| } |
| } |
| |
| u->output.tag = (ngx_buf_tag_t) &ngx_http_proxy_module; |
| |
| u->conf = &plcf->upstream; |
| |
| #if (NGX_HTTP_CACHE) |
| u->create_key = ngx_http_proxy_create_key; |
| #endif |
| u->create_request = ngx_http_proxy_create_request; |
| u->reinit_request = ngx_http_proxy_reinit_request; |
| u->process_header = ngx_http_proxy_process_status_line; |
| u->abort_request = ngx_http_proxy_abort_request; |
| u->finalize_request = ngx_http_proxy_finalize_request; |
| |
| if (plcf->redirects) { |
| u->rewrite_redirect = ngx_http_proxy_rewrite_redirect; |
| } |
| |
| u->buffering = plcf->upstream.buffering; |
| |
| u->pipe = ngx_pcalloc(r->pool, sizeof(ngx_event_pipe_t)); |
| if (u->pipe == NULL) { |
| return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| } |
| |
| u->pipe->input_filter = ngx_event_pipe_copy_input_filter; |
| |
| u->accel = 1; |
| |
| rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init); |
| |
| if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { |
| return rc; |
| } |
| |
| return NGX_DONE; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_eval(ngx_http_request_t *r, ngx_http_proxy_ctx_t *ctx, |
| ngx_http_proxy_loc_conf_t *plcf) |
| { |
| u_char *p; |
| size_t add; |
| u_short port; |
| ngx_str_t proxy; |
| ngx_url_t url; |
| ngx_http_upstream_t *u; |
| |
| if (ngx_http_script_run(r, &proxy, plcf->proxy_lengths->elts, 0, |
| plcf->proxy_values->elts) |
| == NULL) |
| { |
| return NGX_ERROR; |
| } |
| |
| if (ngx_strncasecmp(proxy.data, (u_char *) "http://", 7) == 0) { |
| |
| add = 7; |
| port = 80; |
| |
| #if (NGX_HTTP_SSL) |
| |
| } else if (ngx_strncasecmp(proxy.data, (u_char *) "https://", 8) == 0) { |
| |
| add = 8; |
| port = 443; |
| r->upstream->ssl = 1; |
| |
| #endif |
| |
| } else { |
| ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
| "invalid URL prefix in \"%V\"", &proxy); |
| return NGX_ERROR; |
| } |
| |
| u = r->upstream; |
| |
| u->schema.len = add; |
| u->schema.data = proxy.data; |
| |
| ngx_memzero(&url, sizeof(ngx_url_t)); |
| |
| url.url.len = proxy.len - add; |
| url.url.data = proxy.data + add; |
| url.default_port = port; |
| url.uri_part = 1; |
| url.no_resolve = 1; |
| |
| if (ngx_parse_url(r->pool, &url) != NGX_OK) { |
| if (url.err) { |
| ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
| "%s in upstream \"%V\"", url.err, &url.url); |
| } |
| |
| return NGX_ERROR; |
| } |
| |
| if (url.uri.len && url.uri.data[0] == '?') { |
| p = ngx_pnalloc(r->pool, url.uri.len + 1); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| *p++ = '/'; |
| ngx_memcpy(p, url.uri.data, url.uri.len); |
| |
| url.uri.len++; |
| url.uri.data = p - 1; |
| } |
| |
| ctx->vars.key_start = u->schema; |
| |
| ngx_http_proxy_set_vars(&url, &ctx->vars); |
| |
| u->resolved = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_resolved_t)); |
| if (u->resolved == NULL) { |
| return NGX_ERROR; |
| } |
| |
| if (url.addrs && url.addrs[0].sockaddr) { |
| u->resolved->sockaddr = url.addrs[0].sockaddr; |
| u->resolved->socklen = url.addrs[0].socklen; |
| u->resolved->naddrs = 1; |
| u->resolved->host = url.addrs[0].name; |
| |
| } else { |
| u->resolved->host = url.host; |
| u->resolved->port = (in_port_t) (url.no_port ? port : url.port); |
| u->resolved->no_port = url.no_port; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| #if (NGX_HTTP_CACHE) |
| |
| static ngx_int_t |
| ngx_http_proxy_create_key(ngx_http_request_t *r) |
| { |
| size_t len, loc_len; |
| u_char *p; |
| uintptr_t escape; |
| ngx_str_t *key; |
| ngx_http_upstream_t *u; |
| ngx_http_proxy_ctx_t *ctx; |
| ngx_http_proxy_loc_conf_t *plcf; |
| |
| u = r->upstream; |
| |
| plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module); |
| |
| ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module); |
| |
| key = ngx_array_push(&r->cache->keys); |
| if (key == NULL) { |
| return NGX_ERROR; |
| } |
| |
| if (plcf->cache_key.value.len) { |
| |
| if (ngx_http_complex_value(r, &plcf->cache_key, key) != NGX_OK) { |
| return NGX_ERROR; |
| } |
| |
| return NGX_OK; |
| } |
| |
| *key = ctx->vars.key_start; |
| |
| key = ngx_array_push(&r->cache->keys); |
| if (key == NULL) { |
| return NGX_ERROR; |
| } |
| |
| if (plcf->proxy_lengths) { |
| |
| *key = ctx->vars.uri; |
| u->uri = ctx->vars.uri; |
| |
| return NGX_OK; |
| |
| } else if (ctx->vars.uri.len == 0 && r->valid_unparsed_uri && r == r->main) |
| { |
| *key = r->unparsed_uri; |
| u->uri = r->unparsed_uri; |
| |
| return NGX_OK; |
| } |
| |
| loc_len = (r->valid_location && ctx->vars.uri.len) ? plcf->location.len : 0; |
| |
| if (r->quoted_uri || r->internal) { |
| escape = 2 * ngx_escape_uri(NULL, r->uri.data + loc_len, |
| r->uri.len - loc_len, NGX_ESCAPE_URI); |
| } else { |
| escape = 0; |
| } |
| |
| len = ctx->vars.uri.len + r->uri.len - loc_len + escape |
| + sizeof("?") - 1 + r->args.len; |
| |
| p = ngx_pnalloc(r->pool, len); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| key->data = p; |
| |
| if (r->valid_location) { |
| p = ngx_copy(p, ctx->vars.uri.data, ctx->vars.uri.len); |
| } |
| |
| if (escape) { |
| ngx_escape_uri(p, r->uri.data + loc_len, |
| r->uri.len - loc_len, NGX_ESCAPE_URI); |
| p += r->uri.len - loc_len + escape; |
| |
| } else { |
| p = ngx_copy(p, r->uri.data + loc_len, r->uri.len - loc_len); |
| } |
| |
| if (r->args.len > 0) { |
| *p++ = '?'; |
| p = ngx_copy(p, r->args.data, r->args.len); |
| } |
| |
| key->len = p - key->data; |
| u->uri = *key; |
| |
| return NGX_OK; |
| } |
| |
| #endif |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_create_request(ngx_http_request_t *r) |
| { |
| size_t len, uri_len, loc_len, body_len; |
| uintptr_t escape; |
| ngx_buf_t *b; |
| ngx_str_t method; |
| ngx_uint_t i, unparsed_uri; |
| ngx_chain_t *cl, *body; |
| ngx_list_part_t *part; |
| ngx_table_elt_t *header; |
| ngx_http_upstream_t *u; |
| ngx_http_proxy_ctx_t *ctx; |
| ngx_http_script_code_pt code; |
| ngx_http_script_engine_t e, le; |
| ngx_http_proxy_loc_conf_t *plcf; |
| ngx_http_script_len_code_pt lcode; |
| |
| u = r->upstream; |
| |
| plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module); |
| |
| if (u->method.len) { |
| /* HEAD was changed to GET to cache response */ |
| method = u->method; |
| method.len++; |
| |
| } else if (plcf->method.len) { |
| method = plcf->method; |
| |
| } else { |
| method = r->method_name; |
| method.len++; |
| } |
| |
| len = method.len + sizeof(ngx_http_proxy_version) - 1 + sizeof(CRLF) - 1; |
| |
| escape = 0; |
| loc_len = 0; |
| unparsed_uri = 0; |
| |
| ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module); |
| |
| if (plcf->proxy_lengths) { |
| uri_len = ctx->vars.uri.len; |
| |
| } else if (ctx->vars.uri.len == 0 && r->valid_unparsed_uri && r == r->main) |
| { |
| unparsed_uri = 1; |
| uri_len = r->unparsed_uri.len; |
| |
| } else { |
| loc_len = (r->valid_location && ctx->vars.uri.len) ? |
| plcf->location.len : 0; |
| |
| if (r->quoted_uri || r->internal) { |
| escape = 2 * ngx_escape_uri(NULL, r->uri.data + loc_len, |
| r->uri.len - loc_len, NGX_ESCAPE_URI); |
| } |
| |
| uri_len = ctx->vars.uri.len + r->uri.len - loc_len + escape |
| + sizeof("?") - 1 + r->args.len; |
| } |
| |
| if (uri_len == 0) { |
| ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
| "zero length URI to proxy"); |
| return NGX_ERROR; |
| } |
| |
| len += uri_len; |
| |
| ngx_http_script_flush_no_cacheable_variables(r, plcf->flushes); |
| |
| if (plcf->body_set_len) { |
| le.ip = plcf->body_set_len->elts; |
| le.request = r; |
| le.flushed = 1; |
| body_len = 0; |
| |
| while (*(uintptr_t *) le.ip) { |
| lcode = *(ngx_http_script_len_code_pt *) le.ip; |
| body_len += lcode(&le); |
| } |
| |
| ctx->internal_body_length = body_len; |
| len += body_len; |
| } |
| |
| le.ip = plcf->headers_set_len->elts; |
| le.request = r; |
| le.flushed = 1; |
| |
| while (*(uintptr_t *) le.ip) { |
| while (*(uintptr_t *) le.ip) { |
| lcode = *(ngx_http_script_len_code_pt *) le.ip; |
| len += lcode(&le); |
| } |
| le.ip += sizeof(uintptr_t); |
| } |
| |
| |
| if (plcf->upstream.pass_request_headers) { |
| part = &r->headers_in.headers.part; |
| header = part->elts; |
| |
| for (i = 0; /* void */; i++) { |
| |
| if (i >= part->nelts) { |
| if (part->next == NULL) { |
| break; |
| } |
| |
| part = part->next; |
| header = part->elts; |
| i = 0; |
| } |
| |
| if (ngx_hash_find(&plcf->headers_set_hash, header[i].hash, |
| header[i].lowcase_key, header[i].key.len)) |
| { |
| continue; |
| } |
| |
| len += header[i].key.len + sizeof(": ") - 1 |
| + header[i].value.len + sizeof(CRLF) - 1; |
| } |
| } |
| |
| |
| b = ngx_create_temp_buf(r->pool, len); |
| if (b == NULL) { |
| return NGX_ERROR; |
| } |
| |
| cl = ngx_alloc_chain_link(r->pool); |
| if (cl == NULL) { |
| return NGX_ERROR; |
| } |
| |
| cl->buf = b; |
| |
| |
| /* the request line */ |
| |
| b->last = ngx_copy(b->last, method.data, method.len); |
| |
| u->uri.data = b->last; |
| |
| if (plcf->proxy_lengths) { |
| b->last = ngx_copy(b->last, ctx->vars.uri.data, ctx->vars.uri.len); |
| |
| } else if (unparsed_uri) { |
| b->last = ngx_copy(b->last, r->unparsed_uri.data, r->unparsed_uri.len); |
| |
| } else { |
| if (r->valid_location) { |
| b->last = ngx_copy(b->last, ctx->vars.uri.data, ctx->vars.uri.len); |
| } |
| |
| if (escape) { |
| ngx_escape_uri(b->last, r->uri.data + loc_len, |
| r->uri.len - loc_len, NGX_ESCAPE_URI); |
| b->last += r->uri.len - loc_len + escape; |
| |
| } else { |
| b->last = ngx_copy(b->last, r->uri.data + loc_len, |
| r->uri.len - loc_len); |
| } |
| |
| if (r->args.len > 0) { |
| *b->last++ = '?'; |
| b->last = ngx_copy(b->last, r->args.data, r->args.len); |
| } |
| } |
| |
| u->uri.len = b->last - u->uri.data; |
| |
| b->last = ngx_cpymem(b->last, ngx_http_proxy_version, |
| sizeof(ngx_http_proxy_version) - 1); |
| |
| ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); |
| |
| e.ip = plcf->headers_set->elts; |
| e.pos = b->last; |
| e.request = r; |
| e.flushed = 1; |
| |
| le.ip = plcf->headers_set_len->elts; |
| |
| while (*(uintptr_t *) le.ip) { |
| lcode = *(ngx_http_script_len_code_pt *) le.ip; |
| |
| /* skip the header line name length */ |
| (void) lcode(&le); |
| |
| if (*(ngx_http_script_len_code_pt *) le.ip) { |
| |
| for (len = 0; *(uintptr_t *) le.ip; len += lcode(&le)) { |
| lcode = *(ngx_http_script_len_code_pt *) le.ip; |
| } |
| |
| e.skip = (len == sizeof(CRLF) - 1) ? 1 : 0; |
| |
| } else { |
| e.skip = 0; |
| } |
| |
| le.ip += sizeof(uintptr_t); |
| |
| while (*(uintptr_t *) e.ip) { |
| code = *(ngx_http_script_code_pt *) e.ip; |
| code((ngx_http_script_engine_t *) &e); |
| } |
| e.ip += sizeof(uintptr_t); |
| } |
| |
| b->last = e.pos; |
| |
| |
| if (plcf->upstream.pass_request_headers) { |
| part = &r->headers_in.headers.part; |
| header = part->elts; |
| |
| for (i = 0; /* void */; i++) { |
| |
| if (i >= part->nelts) { |
| if (part->next == NULL) { |
| break; |
| } |
| |
| part = part->next; |
| header = part->elts; |
| i = 0; |
| } |
| |
| if (ngx_hash_find(&plcf->headers_set_hash, header[i].hash, |
| header[i].lowcase_key, header[i].key.len)) |
| { |
| continue; |
| } |
| |
| b->last = ngx_copy(b->last, header[i].key.data, header[i].key.len); |
| |
| *b->last++ = ':'; *b->last++ = ' '; |
| |
| b->last = ngx_copy(b->last, header[i].value.data, |
| header[i].value.len); |
| |
| *b->last++ = CR; *b->last++ = LF; |
| |
| ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http proxy header: \"%V: %V\"", |
| &header[i].key, &header[i].value); |
| } |
| } |
| |
| |
| /* add "\r\n" at the header end */ |
| *b->last++ = CR; *b->last++ = LF; |
| |
| if (plcf->body_set) { |
| e.ip = plcf->body_set->elts; |
| e.pos = b->last; |
| |
| while (*(uintptr_t *) e.ip) { |
| code = *(ngx_http_script_code_pt *) e.ip; |
| code((ngx_http_script_engine_t *) &e); |
| } |
| |
| b->last = e.pos; |
| } |
| |
| ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http proxy header:\n\"%*s\"", |
| (size_t) (b->last - b->pos), b->pos); |
| |
| if (plcf->body_set == NULL && plcf->upstream.pass_request_body) { |
| |
| body = u->request_bufs; |
| u->request_bufs = cl; |
| |
| while (body) { |
| b = ngx_alloc_buf(r->pool); |
| if (b == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ngx_memcpy(b, body->buf, sizeof(ngx_buf_t)); |
| |
| cl->next = ngx_alloc_chain_link(r->pool); |
| if (cl->next == NULL) { |
| return NGX_ERROR; |
| } |
| |
| cl = cl->next; |
| cl->buf = b; |
| |
| body = body->next; |
| } |
| |
| b->flush = 1; |
| |
| } else { |
| u->request_bufs = cl; |
| } |
| |
| cl->next = NULL; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_reinit_request(ngx_http_request_t *r) |
| { |
| ngx_http_proxy_ctx_t *ctx; |
| |
| ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module); |
| |
| if (ctx == NULL) { |
| return NGX_OK; |
| } |
| |
| ctx->status = 0; |
| ctx->status_count = 0; |
| ctx->status_start = NULL; |
| ctx->status_end = NULL; |
| |
| r->upstream->process_header = ngx_http_proxy_process_status_line; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_process_status_line(ngx_http_request_t *r) |
| { |
| ngx_int_t rc; |
| ngx_http_upstream_t *u; |
| ngx_http_proxy_ctx_t *ctx; |
| |
| ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module); |
| |
| if (ctx == NULL) { |
| return NGX_ERROR; |
| } |
| |
| rc = ngx_http_proxy_parse_status_line(r, ctx); |
| |
| if (rc == NGX_AGAIN) { |
| return rc; |
| } |
| |
| u = r->upstream; |
| |
| if (rc == NGX_HTTP_PROXY_PARSE_NO_HEADER) { |
| |
| #if (NGX_HTTP_CACHE) |
| |
| if (r->cache) { |
| r->http_version = NGX_HTTP_VERSION_9; |
| u->headers_in.status_n = NGX_HTTP_OK; |
| return NGX_OK; |
| } |
| |
| #endif |
| |
| ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
| "upstream sent no valid HTTP/1.0 header"); |
| |
| #if 0 |
| if (u->accel) { |
| return NGX_HTTP_UPSTREAM_INVALID_HEADER; |
| } |
| #endif |
| |
| r->http_version = NGX_HTTP_VERSION_9; |
| u->headers_in.status_n = NGX_HTTP_OK; |
| u->state->status = NGX_HTTP_OK; |
| |
| return NGX_OK; |
| } |
| |
| if (u->state) { |
| u->state->status = ctx->status; |
| } |
| |
| u->headers_in.status_n = ctx->status; |
| |
| u->headers_in.status_line.len = ctx->status_end - ctx->status_start; |
| u->headers_in.status_line.data = ngx_pnalloc(r->pool, |
| u->headers_in.status_line.len); |
| if (u->headers_in.status_line.data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ngx_memcpy(u->headers_in.status_line.data, ctx->status_start, |
| u->headers_in.status_line.len); |
| |
| ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http proxy status %ui \"%V\"", |
| u->headers_in.status_n, &u->headers_in.status_line); |
| |
| u->process_header = ngx_http_proxy_process_header; |
| |
| return ngx_http_proxy_process_header(r); |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_parse_status_line(ngx_http_request_t *r, |
| ngx_http_proxy_ctx_t *ctx) |
| { |
| u_char ch; |
| u_char *p; |
| ngx_http_upstream_t *u; |
| enum { |
| sw_start = 0, |
| sw_H, |
| sw_HT, |
| sw_HTT, |
| sw_HTTP, |
| sw_first_major_digit, |
| sw_major_digit, |
| sw_first_minor_digit, |
| sw_minor_digit, |
| sw_status, |
| sw_space_after_status, |
| sw_status_text, |
| sw_almost_done |
| } state; |
| |
| u = r->upstream; |
| |
| state = r->state; |
| |
| for (p = u->buffer.pos; p < u->buffer.last; p++) { |
| ch = *p; |
| |
| switch (state) { |
| |
| /* "HTTP/" */ |
| case sw_start: |
| switch (ch) { |
| case 'H': |
| state = sw_H; |
| break; |
| default: |
| return NGX_HTTP_PROXY_PARSE_NO_HEADER; |
| } |
| break; |
| |
| case sw_H: |
| switch (ch) { |
| case 'T': |
| state = sw_HT; |
| break; |
| default: |
| return NGX_HTTP_PROXY_PARSE_NO_HEADER; |
| } |
| break; |
| |
| case sw_HT: |
| switch (ch) { |
| case 'T': |
| state = sw_HTT; |
| break; |
| default: |
| return NGX_HTTP_PROXY_PARSE_NO_HEADER; |
| } |
| break; |
| |
| case sw_HTT: |
| switch (ch) { |
| case 'P': |
| state = sw_HTTP; |
| break; |
| default: |
| return NGX_HTTP_PROXY_PARSE_NO_HEADER; |
| } |
| break; |
| |
| case sw_HTTP: |
| switch (ch) { |
| case '/': |
| state = sw_first_major_digit; |
| break; |
| default: |
| return NGX_HTTP_PROXY_PARSE_NO_HEADER; |
| } |
| break; |
| |
| /* the first digit of major HTTP version */ |
| case sw_first_major_digit: |
| if (ch < '1' || ch > '9') { |
| return NGX_HTTP_PROXY_PARSE_NO_HEADER; |
| } |
| |
| state = sw_major_digit; |
| break; |
| |
| /* the major HTTP version or dot */ |
| case sw_major_digit: |
| if (ch == '.') { |
| state = sw_first_minor_digit; |
| break; |
| } |
| |
| if (ch < '0' || ch > '9') { |
| return NGX_HTTP_PROXY_PARSE_NO_HEADER; |
| } |
| |
| break; |
| |
| /* the first digit of minor HTTP version */ |
| case sw_first_minor_digit: |
| if (ch < '0' || ch > '9') { |
| return NGX_HTTP_PROXY_PARSE_NO_HEADER; |
| } |
| |
| state = sw_minor_digit; |
| break; |
| |
| /* the minor HTTP version or the end of the request line */ |
| case sw_minor_digit: |
| if (ch == ' ') { |
| state = sw_status; |
| break; |
| } |
| |
| if (ch < '0' || ch > '9') { |
| return NGX_HTTP_PROXY_PARSE_NO_HEADER; |
| } |
| |
| break; |
| |
| /* HTTP status code */ |
| case sw_status: |
| if (ch == ' ') { |
| break; |
| } |
| |
| if (ch < '0' || ch > '9') { |
| return NGX_HTTP_PROXY_PARSE_NO_HEADER; |
| } |
| |
| ctx->status = ctx->status * 10 + ch - '0'; |
| |
| if (++ctx->status_count == 3) { |
| state = sw_space_after_status; |
| ctx->status_start = p - 2; |
| } |
| |
| break; |
| |
| /* space or end of line */ |
| case sw_space_after_status: |
| switch (ch) { |
| case ' ': |
| state = sw_status_text; |
| break; |
| case '.': /* IIS may send 403.1, 403.2, etc */ |
| state = sw_status_text; |
| break; |
| case CR: |
| state = sw_almost_done; |
| break; |
| case LF: |
| goto done; |
| default: |
| return NGX_HTTP_PROXY_PARSE_NO_HEADER; |
| } |
| break; |
| |
| /* any text until end of line */ |
| case sw_status_text: |
| switch (ch) { |
| case CR: |
| state = sw_almost_done; |
| |
| break; |
| case LF: |
| goto done; |
| } |
| break; |
| |
| /* end of status line */ |
| case sw_almost_done: |
| ctx->status_end = p - 1; |
| switch (ch) { |
| case LF: |
| goto done; |
| default: |
| return NGX_HTTP_PROXY_PARSE_NO_HEADER; |
| } |
| } |
| } |
| |
| u->buffer.pos = p; |
| r->state = state; |
| |
| return NGX_AGAIN; |
| |
| done: |
| |
| u->buffer.pos = p + 1; |
| |
| if (ctx->status_end == NULL) { |
| ctx->status_end = p; |
| } |
| |
| r->state = sw_start; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_process_header(ngx_http_request_t *r) |
| { |
| ngx_int_t rc; |
| ngx_table_elt_t *h; |
| ngx_http_upstream_header_t *hh; |
| ngx_http_upstream_main_conf_t *umcf; |
| |
| umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module); |
| |
| for ( ;; ) { |
| |
| rc = ngx_http_parse_header_line(r, &r->upstream->buffer, 1); |
| |
| if (rc == NGX_OK) { |
| |
| /* a header line has been parsed successfully */ |
| |
| h = ngx_list_push(&r->upstream->headers_in.headers); |
| if (h == NULL) { |
| return NGX_ERROR; |
| } |
| |
| h->hash = r->header_hash; |
| |
| h->key.len = r->header_name_end - r->header_name_start; |
| h->value.len = r->header_end - r->header_start; |
| |
| h->key.data = ngx_pnalloc(r->pool, |
| h->key.len + 1 + h->value.len + 1 + h->key.len); |
| if (h->key.data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| h->value.data = h->key.data + h->key.len + 1; |
| h->lowcase_key = h->key.data + h->key.len + 1 + h->value.len + 1; |
| |
| ngx_cpystrn(h->key.data, r->header_name_start, h->key.len + 1); |
| ngx_cpystrn(h->value.data, r->header_start, h->value.len + 1); |
| |
| if (h->key.len == r->lowcase_index) { |
| ngx_memcpy(h->lowcase_key, r->lowcase_header, h->key.len); |
| |
| } else { |
| ngx_strlow(h->lowcase_key, h->key.data, h->key.len); |
| } |
| |
| hh = ngx_hash_find(&umcf->headers_in_hash, h->hash, |
| h->lowcase_key, h->key.len); |
| |
| if (hh && hh->handler(r, h, hh->offset) != NGX_OK) { |
| return NGX_ERROR; |
| } |
| |
| ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http proxy 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 proxy header done"); |
| |
| /* |
| * if no "Server" and "Date" in header line, |
| * then add the special empty headers |
| */ |
| |
| if (r->upstream->headers_in.server == NULL) { |
| h = ngx_list_push(&r->upstream->headers_in.headers); |
| if (h == NULL) { |
| return NGX_ERROR; |
| } |
| |
| h->hash = ngx_hash(ngx_hash(ngx_hash(ngx_hash( |
| ngx_hash('s', 'e'), 'r'), 'v'), 'e'), 'r'); |
| |
| h->key.len = sizeof("Server") - 1; |
| h->key.data = (u_char *) "Server"; |
| h->value.len = 0; |
| h->value.data = NULL; |
| h->lowcase_key = (u_char *) "server"; |
| } |
| |
| if (r->upstream->headers_in.date == NULL) { |
| h = ngx_list_push(&r->upstream->headers_in.headers); |
| if (h == NULL) { |
| return NGX_ERROR; |
| } |
| |
| h->hash = ngx_hash(ngx_hash(ngx_hash('d', 'a'), 't'), 'e'); |
| |
| h->key.len = sizeof("Date") - 1; |
| h->key.data = (u_char *) "Date"; |
| h->value.len = 0; |
| h->value.data = NULL; |
| h->lowcase_key = (u_char *) "date"; |
| } |
| |
| return NGX_OK; |
| } |
| |
| if (rc == NGX_AGAIN) { |
| return NGX_AGAIN; |
| } |
| |
| /* there was error while a header line parsing */ |
| |
| ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
| "upstream sent invalid header"); |
| |
| return NGX_HTTP_UPSTREAM_INVALID_HEADER; |
| } |
| } |
| |
| |
| static void |
| ngx_http_proxy_abort_request(ngx_http_request_t *r) |
| { |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "abort http proxy request"); |
| |
| return; |
| } |
| |
| |
| static void |
| ngx_http_proxy_finalize_request(ngx_http_request_t *r, ngx_int_t rc) |
| { |
| ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "finalize http proxy request"); |
| |
| return; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_host_variable(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_http_proxy_ctx_t *ctx; |
| |
| ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module); |
| |
| if (ctx == NULL) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| v->len = ctx->vars.host_header.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = ctx->vars.host_header.data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_port_variable(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_http_proxy_ctx_t *ctx; |
| |
| ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module); |
| |
| if (ctx == NULL) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| v->len = ctx->vars.port.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = ctx->vars.port.data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_add_x_forwarded_for_variable(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| if (r->headers_in.x_forwarded_for == NULL) { |
| v->len = r->connection->addr_text.len; |
| v->data = r->connection->addr_text.data; |
| return NGX_OK; |
| } |
| |
| v->len = r->headers_in.x_forwarded_for->value.len |
| + sizeof(", ") - 1 + r->connection->addr_text.len; |
| |
| p = ngx_pnalloc(r->pool, v->len); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->data = p; |
| |
| p = ngx_copy(p, r->headers_in.x_forwarded_for->value.data, |
| r->headers_in.x_forwarded_for->value.len); |
| |
| *p++ = ','; *p++ = ' '; |
| |
| ngx_memcpy(p, r->connection->addr_text.data, r->connection->addr_text.len); |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_internal_body_length_variable(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_http_proxy_ctx_t *ctx; |
| |
| ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module); |
| |
| if (ctx == NULL) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| v->data = ngx_pnalloc(r->connection->pool, NGX_SIZE_T_LEN); |
| |
| if (v->data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = ngx_sprintf(v->data, "%uz", ctx->internal_body_length) - v->data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_rewrite_redirect(ngx_http_request_t *r, ngx_table_elt_t *h, |
| size_t prefix) |
| { |
| ngx_int_t rc; |
| ngx_uint_t i; |
| ngx_http_proxy_loc_conf_t *plcf; |
| ngx_http_proxy_redirect_t *pr; |
| |
| plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module); |
| |
| pr = plcf->redirects->elts; |
| |
| if (pr == NULL) { |
| return NGX_DECLINED; |
| } |
| |
| for (i = 0; i < plcf->redirects->nelts; i++) { |
| rc = pr[i].handler(r, h, prefix, &pr[i]); |
| |
| if (rc != NGX_DECLINED) { |
| return rc; |
| } |
| } |
| |
| return NGX_DECLINED; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_rewrite_redirect_text(ngx_http_request_t *r, ngx_table_elt_t *h, |
| size_t prefix, ngx_http_proxy_redirect_t *pr) |
| { |
| size_t len; |
| u_char *data, *p; |
| |
| if (pr->redirect.len > h->value.len - prefix |
| || ngx_rstrncmp(h->value.data + prefix, pr->redirect.data, |
| pr->redirect.len) != 0) |
| { |
| return NGX_DECLINED; |
| } |
| |
| len = prefix + pr->replacement.text.len + h->value.len - pr->redirect.len; |
| |
| data = ngx_pnalloc(r->pool, len); |
| if (data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| p = data; |
| |
| p = ngx_copy(p, h->value.data, prefix); |
| |
| if (pr->replacement.text.len) { |
| p = ngx_copy(p, pr->replacement.text.data, pr->replacement.text.len); |
| } |
| |
| ngx_memcpy(p, h->value.data + prefix + pr->redirect.len, |
| h->value.len - pr->redirect.len - prefix); |
| |
| h->value.len = len; |
| h->value.data = data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_rewrite_redirect_vars(ngx_http_request_t *r, ngx_table_elt_t *h, |
| size_t prefix, ngx_http_proxy_redirect_t *pr) |
| { |
| size_t len; |
| u_char *data, *p; |
| ngx_http_script_code_pt code; |
| ngx_http_script_engine_t e; |
| ngx_http_script_len_code_pt lcode; |
| |
| if (pr->redirect.len > h->value.len - prefix |
| || ngx_rstrncmp(h->value.data + prefix, pr->redirect.data, |
| pr->redirect.len) != 0) |
| { |
| return NGX_DECLINED; |
| } |
| |
| ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); |
| |
| e.ip = pr->replacement.vars.lengths; |
| e.request = r; |
| |
| len = prefix + h->value.len - pr->redirect.len; |
| |
| while (*(uintptr_t *) e.ip) { |
| lcode = *(ngx_http_script_len_code_pt *) e.ip; |
| len += lcode(&e); |
| } |
| |
| data = ngx_pnalloc(r->pool, len); |
| if (data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| p = data; |
| |
| p = ngx_copy(p, h->value.data, prefix); |
| |
| e.ip = pr->replacement.vars.values; |
| e.pos = p; |
| |
| while (*(uintptr_t *) e.ip) { |
| code = *(ngx_http_script_code_pt *) e.ip; |
| code(&e); |
| } |
| |
| ngx_memcpy(e.pos, h->value.data + prefix + pr->redirect.len, |
| h->value.len - pr->redirect.len - prefix); |
| |
| h->value.len = len; |
| h->value.data = data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_add_variables(ngx_conf_t *cf) |
| { |
| ngx_http_variable_t *var, *v; |
| |
| for (v = ngx_http_proxy_vars; v->name.len; v++) { |
| var = ngx_http_add_variable(cf, &v->name, v->flags); |
| if (var == NULL) { |
| return NGX_ERROR; |
| } |
| |
| var->get_handler = v->get_handler; |
| var->data = v->data; |
| } |
| |
| 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 NULL; |
| } |
| |
| /* |
| * set by ngx_pcalloc(): |
| * |
| * conf->upstream.bufs.num = 0; |
| * conf->upstream.ignore_headers = 0; |
| * conf->upstream.next_upstream = 0; |
| * conf->upstream.cache_use_stale = 0; |
| * conf->upstream.cache_methods = 0; |
| * conf->upstream.temp_path = NULL; |
| * conf->upstream.hide_headers_hash = { NULL, 0 }; |
| * conf->upstream.uri = { 0, NULL }; |
| * conf->upstream.location = NULL; |
| * conf->upstream.store_lengths = NULL; |
| * conf->upstream.store_values = NULL; |
| * |
| * conf->method = NULL; |
| * conf->headers_source = NULL; |
| * conf->headers_set_len = NULL; |
| * conf->headers_set = NULL; |
| * conf->headers_set_hash = NULL; |
| * conf->body_set_len = NULL; |
| * conf->body_set = NULL; |
| * conf->body_source = { 0, NULL }; |
| * conf->rewrite_locations = NULL; |
| */ |
| |
| conf->upstream.store = NGX_CONF_UNSET; |
| conf->upstream.store_access = NGX_CONF_UNSET_UINT; |
| conf->upstream.buffering = NGX_CONF_UNSET; |
| conf->upstream.ignore_client_abort = NGX_CONF_UNSET; |
| |
| conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; |
| conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; |
| conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; |
| |
| conf->upstream.send_lowat = NGX_CONF_UNSET_SIZE; |
| conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; |
| |
| conf->upstream.busy_buffers_size_conf = NGX_CONF_UNSET_SIZE; |
| conf->upstream.max_temp_file_size_conf = NGX_CONF_UNSET_SIZE; |
| conf->upstream.temp_file_write_size_conf = NGX_CONF_UNSET_SIZE; |
| |
| conf->upstream.pass_request_headers = NGX_CONF_UNSET; |
| conf->upstream.pass_request_body = NGX_CONF_UNSET; |
| |
| #if (NGX_HTTP_CACHE) |
| conf->upstream.cache = NGX_CONF_UNSET_PTR; |
| conf->upstream.cache_min_uses = NGX_CONF_UNSET_UINT; |
| conf->upstream.cache_valid = NGX_CONF_UNSET_PTR; |
| #endif |
| |
| conf->upstream.hide_headers = NGX_CONF_UNSET_PTR; |
| conf->upstream.pass_headers = NGX_CONF_UNSET_PTR; |
| |
| conf->upstream.intercept_errors = NGX_CONF_UNSET; |
| #if (NGX_HTTP_SSL) |
| conf->upstream.ssl_session_reuse = NGX_CONF_UNSET; |
| #endif |
| |
| /* "proxy_cyclic_temp_file" is disabled */ |
| conf->upstream.cyclic_temp_file = 0; |
| |
| conf->redirect = NGX_CONF_UNSET; |
| conf->upstream.change_buffering = 1; |
| |
| conf->headers_hash_max_size = NGX_CONF_UNSET_UINT; |
| conf->headers_hash_bucket_size = NGX_CONF_UNSET_UINT; |
| |
| 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_str_t *h; |
| ngx_keyval_t *s; |
| ngx_hash_init_t hash; |
| ngx_http_proxy_redirect_t *pr; |
| ngx_http_script_compile_t sc; |
| |
| if (conf->upstream.store != 0) { |
| ngx_conf_merge_value(conf->upstream.store, |
| prev->upstream.store, 0); |
| |
| if (conf->upstream.store_lengths == NULL) { |
| conf->upstream.store_lengths = prev->upstream.store_lengths; |
| conf->upstream.store_values = prev->upstream.store_values; |
| } |
| } |
| |
| ngx_conf_merge_uint_value(conf->upstream.store_access, |
| prev->upstream.store_access, 0600); |
| |
| ngx_conf_merge_value(conf->upstream.buffering, |
| prev->upstream.buffering, 1); |
| |
| ngx_conf_merge_value(conf->upstream.ignore_client_abort, |
| prev->upstream.ignore_client_abort, 0); |
| |
| ngx_conf_merge_msec_value(conf->upstream.connect_timeout, |
| prev->upstream.connect_timeout, 60000); |
| |
| ngx_conf_merge_msec_value(conf->upstream.send_timeout, |
| prev->upstream.send_timeout, 60000); |
| |
| ngx_conf_merge_msec_value(conf->upstream.read_timeout, |
| prev->upstream.read_timeout, 60000); |
| |
| ngx_conf_merge_size_value(conf->upstream.send_lowat, |
| prev->upstream.send_lowat, 0); |
| |
| ngx_conf_merge_size_value(conf->upstream.buffer_size, |
| prev->upstream.buffer_size, |
| (size_t) ngx_pagesize); |
| |
| ngx_conf_merge_bufs_value(conf->upstream.bufs, prev->upstream.bufs, |
| 8, ngx_pagesize); |
| |
| if (conf->upstream.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->upstream.buffer_size; |
| if (size < conf->upstream.bufs.size) { |
| size = conf->upstream.bufs.size; |
| } |
| |
| |
| ngx_conf_merge_size_value(conf->upstream.busy_buffers_size_conf, |
| prev->upstream.busy_buffers_size_conf, |
| NGX_CONF_UNSET_SIZE); |
| |
| if (conf->upstream.busy_buffers_size_conf == NGX_CONF_UNSET_SIZE) { |
| conf->upstream.busy_buffers_size = 2 * size; |
| } else { |
| conf->upstream.busy_buffers_size = |
| conf->upstream.busy_buffers_size_conf; |
| } |
| |
| if (conf->upstream.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_buffer_size\" and " |
| "one of the \"proxy_buffers\""); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| if (conf->upstream.busy_buffers_size |
| > (conf->upstream.bufs.num - 1) * conf->upstream.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->upstream.temp_file_write_size_conf, |
| prev->upstream.temp_file_write_size_conf, |
| NGX_CONF_UNSET_SIZE); |
| |
| if (conf->upstream.temp_file_write_size_conf == NGX_CONF_UNSET_SIZE) { |
| conf->upstream.temp_file_write_size = 2 * size; |
| } else { |
| conf->upstream.temp_file_write_size = |
| conf->upstream.temp_file_write_size_conf; |
| } |
| |
| if (conf->upstream.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_buffer_size\" and " |
| "one of the \"proxy_buffers\""); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| ngx_conf_merge_size_value(conf->upstream.max_temp_file_size_conf, |
| prev->upstream.max_temp_file_size_conf, |
| NGX_CONF_UNSET_SIZE); |
| |
| if (conf->upstream.max_temp_file_size_conf == NGX_CONF_UNSET_SIZE) { |
| conf->upstream.max_temp_file_size = 1024 * 1024 * 1024; |
| } else { |
| conf->upstream.max_temp_file_size = |
| conf->upstream.max_temp_file_size_conf; |
| } |
| |
| if (conf->upstream.max_temp_file_size != 0 |
| && conf->upstream.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_buffer_size\" and " |
| "one of the \"proxy_buffers\""); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| |
| ngx_conf_merge_bitmask_value(conf->upstream.ignore_headers, |
| prev->upstream.ignore_headers, |
| NGX_CONF_BITMASK_SET); |
| |
| |
| ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, |
| prev->upstream.next_upstream, |
| (NGX_CONF_BITMASK_SET |
| |NGX_HTTP_UPSTREAM_FT_ERROR |
| |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); |
| |
| if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { |
| conf->upstream.next_upstream = NGX_CONF_BITMASK_SET |
| |NGX_HTTP_UPSTREAM_FT_OFF; |
| } |
| |
| if (ngx_conf_merge_path_value(cf, &conf->upstream.temp_path, |
| prev->upstream.temp_path, |
| &ngx_http_proxy_temp_path) |
| != NGX_OK) |
| { |
| return NGX_CONF_ERROR; |
| } |
| |
| |
| #if (NGX_HTTP_CACHE) |
| |
| ngx_conf_merge_ptr_value(conf->upstream.cache, |
| prev->upstream.cache, NULL); |
| |
| if (conf->upstream.cache && conf->upstream.cache->data == NULL) { |
| ngx_shm_zone_t *shm_zone; |
| |
| shm_zone = conf->upstream.cache; |
| |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "\"proxy_cache\" zone \"%V\" is unknown", |
| &shm_zone->shm.name); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| ngx_conf_merge_uint_value(conf->upstream.cache_min_uses, |
| prev->upstream.cache_min_uses, 1); |
| |
| ngx_conf_merge_bitmask_value(conf->upstream.cache_use_stale, |
| prev->upstream.cache_use_stale, |
| (NGX_CONF_BITMASK_SET |
| |NGX_HTTP_UPSTREAM_FT_OFF)); |
| |
| if (conf->upstream.cache_methods == 0) { |
| conf->upstream.cache_methods = prev->upstream.cache_methods; |
| } |
| |
| conf->upstream.cache_methods |= NGX_HTTP_GET|NGX_HTTP_HEAD; |
| |
| if (conf->upstream.cache_use_stale & NGX_HTTP_UPSTREAM_FT_OFF) { |
| conf->upstream.cache_use_stale = NGX_CONF_BITMASK_SET |
| |NGX_HTTP_UPSTREAM_FT_OFF; |
| } |
| |
| ngx_conf_merge_ptr_value(conf->upstream.cache_valid, |
| prev->upstream.cache_valid, NULL); |
| |
| if (conf->cache_key.value.data == NULL) { |
| conf->cache_key = prev->cache_key; |
| } |
| |
| #endif |
| |
| if (conf->method.len == 0) { |
| conf->method = prev->method; |
| |
| } else { |
| conf->method.data[conf->method.len] = ' '; |
| conf->method.len++; |
| } |
| |
| ngx_conf_merge_value(conf->upstream.pass_request_headers, |
| prev->upstream.pass_request_headers, 1); |
| ngx_conf_merge_value(conf->upstream.pass_request_body, |
| prev->upstream.pass_request_body, 1); |
| |
| ngx_conf_merge_value(conf->upstream.intercept_errors, |
| prev->upstream.intercept_errors, 0); |
| |
| #if (NGX_HTTP_SSL) |
| ngx_conf_merge_value(conf->upstream.ssl_session_reuse, |
| prev->upstream.ssl_session_reuse, 1); |
| #endif |
| |
| ngx_conf_merge_value(conf->redirect, prev->redirect, 1); |
| |
| if (conf->redirect) { |
| |
| if (conf->redirects == NULL) { |
| conf->redirects = prev->redirects; |
| } |
| |
| if (conf->redirects == NULL && conf->url.data) { |
| |
| conf->redirects = ngx_array_create(cf->pool, 1, |
| sizeof(ngx_http_proxy_redirect_t)); |
| if (conf->redirects == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| pr = ngx_array_push(conf->redirects); |
| if (pr == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| pr->handler = ngx_http_proxy_rewrite_redirect_text; |
| pr->redirect = conf->url; |
| |
| if (conf->vars.uri.len) { |
| pr->replacement.text = conf->location; |
| |
| } else { |
| pr->replacement.text.len = 0; |
| pr->replacement.text.data = NULL; |
| } |
| } |
| } |
| |
| /* STUB */ |
| if (prev->proxy_lengths) { |
| conf->proxy_lengths = prev->proxy_lengths; |
| conf->proxy_values = prev->proxy_values; |
| } |
| |
| #if (NGX_HTTP_SSL) |
| if (conf->upstream.ssl == NULL) { |
| conf->upstream.ssl = prev->upstream.ssl; |
| } |
| #endif |
| |
| ngx_conf_merge_uint_value(conf->headers_hash_max_size, |
| prev->headers_hash_max_size, 512); |
| |
| ngx_conf_merge_uint_value(conf->headers_hash_bucket_size, |
| prev->headers_hash_bucket_size, 64); |
| |
| conf->headers_hash_bucket_size = ngx_align(conf->headers_hash_bucket_size, |
| ngx_cacheline_size); |
| |
| hash.max_size = conf->headers_hash_max_size; |
| hash.bucket_size = conf->headers_hash_bucket_size; |
| hash.name = "proxy_headers_hash"; |
| |
| #if (NGX_HTTP_CACHE) |
| |
| h = conf->upstream.cache ? ngx_http_proxy_hide_cache_headers: |
| ngx_http_proxy_hide_headers; |
| #else |
| |
| h = ngx_http_proxy_hide_headers; |
| |
| #endif |
| |
| if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream, |
| &prev->upstream, h, &hash) |
| != NGX_OK) |
| { |
| return NGX_CONF_ERROR; |
| } |
| |
| if (conf->upstream.upstream == NULL) { |
| conf->upstream.upstream = prev->upstream.upstream; |
| conf->vars = prev->vars; |
| } |
| |
| |
| if (conf->body_source.data == NULL) { |
| conf->body_source = prev->body_source; |
| conf->body_set_len = prev->body_set_len; |
| conf->body_set = prev->body_set; |
| } |
| |
| if (conf->body_source.data && conf->body_set_len == NULL) { |
| |
| ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); |
| |
| sc.cf = cf; |
| sc.source = &conf->body_source; |
| sc.flushes = &conf->flushes; |
| sc.lengths = &conf->body_set_len; |
| sc.values = &conf->body_set; |
| sc.complete_lengths = 1; |
| sc.complete_values = 1; |
| |
| if (ngx_http_script_compile(&sc) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| if (conf->headers_source == NULL) { |
| conf->headers_source = ngx_array_create(cf->pool, 4, |
| sizeof(ngx_keyval_t)); |
| if (conf->headers_source == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| } |
| |
| s = ngx_array_push(conf->headers_source); |
| if (s == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| s->key.len = sizeof("Content-Length") - 1; |
| s->key.data = (u_char *) "Content-Length"; |
| s->value.len = sizeof("$proxy_internal_body_length") - 1; |
| s->value.data = (u_char *) "$proxy_internal_body_length"; |
| } |
| |
| if (ngx_http_proxy_merge_headers(cf, conf, prev) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_proxy_merge_headers(ngx_conf_t *cf, ngx_http_proxy_loc_conf_t *conf, |
| ngx_http_proxy_loc_conf_t *prev) |
| { |
| u_char *p; |
| size_t size; |
| uintptr_t *code; |
| ngx_uint_t i; |
| ngx_keyval_t *src, *s, *h; |
| ngx_hash_key_t *hk; |
| ngx_hash_init_t hash; |
| ngx_http_script_compile_t sc; |
| ngx_http_script_copy_code_t *copy; |
| |
| if (conf->headers_source == NULL) { |
| conf->flushes = prev->flushes; |
| conf->headers_set_len = prev->headers_set_len; |
| conf->headers_set = prev->headers_set; |
| conf->headers_set_hash = prev->headers_set_hash; |
| conf->headers_source = prev->headers_source; |
| } |
| |
| if (conf->headers_set_hash.buckets |
| #if (NGX_HTTP_CACHE) |
| && ((conf->upstream.cache == NULL) == (prev->upstream.cache == NULL)) |
| #endif |
| ) |
| { |
| return NGX_OK; |
| } |
| |
| |
| conf->headers_names = ngx_array_create(cf->pool, 4, sizeof(ngx_hash_key_t)); |
| if (conf->headers_names == NULL) { |
| return NGX_ERROR; |
| } |
| |
| if (conf->headers_source == NULL) { |
| conf->headers_source = ngx_array_create(cf->pool, 4, |
| sizeof(ngx_keyval_t)); |
| if (conf->headers_source == NULL) { |
| return NGX_ERROR; |
| } |
| } |
| |
| conf->headers_set_len = ngx_array_create(cf->pool, 64, 1); |
| if (conf->headers_set_len == NULL) { |
| return NGX_ERROR; |
| } |
| |
| conf->headers_set = ngx_array_create(cf->pool, 512, 1); |
| if (conf->headers_set == NULL) { |
| return NGX_ERROR; |
| } |
| |
| |
| src = conf->headers_source->elts; |
| |
| #if (NGX_HTTP_CACHE) |
| |
| h = conf->upstream.cache ? ngx_http_proxy_cache_headers: |
| ngx_http_proxy_headers; |
| #else |
| |
| h = ngx_http_proxy_headers; |
| |
| #endif |
| |
| while (h->key.len) { |
| |
| for (i = 0; i < conf->headers_source->nelts; i++) { |
| if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) { |
| goto next; |
| } |
| } |
| |
| s = ngx_array_push(conf->headers_source); |
| if (s == NULL) { |
| return NGX_ERROR; |
| } |
| |
| *s = *h; |
| |
| src = conf->headers_source->elts; |
| |
| next: |
| |
| h++; |
| } |
| |
| |
| src = conf->headers_source->elts; |
| for (i = 0; i < conf->headers_source->nelts; i++) { |
| |
| hk = ngx_array_push(conf->headers_names); |
| if (hk == NULL) { |
| return NGX_ERROR; |
| } |
| |
| hk->key = src[i].key; |
| hk->key_hash = ngx_hash_key_lc(src[i].key.data, src[i].key.len); |
| hk->value = (void *) 1; |
| |
| if (src[i].value.len == 0) { |
| continue; |
| } |
| |
| if (ngx_http_script_variables_count(&src[i].value) == 0) { |
| copy = ngx_array_push_n(conf->headers_set_len, |
| sizeof(ngx_http_script_copy_code_t)); |
| if (copy == NULL) { |
| return NGX_ERROR; |
| } |
| |
| copy->code = (ngx_http_script_code_pt) |
| ngx_http_script_copy_len_code; |
| copy->len = src[i].key.len + sizeof(": ") - 1 |
| + src[i].value.len + sizeof(CRLF) - 1; |
| |
| |
| size = (sizeof(ngx_http_script_copy_code_t) |
| + src[i].key.len + sizeof(": ") - 1 |
| + src[i].value.len + sizeof(CRLF) - 1 |
| + sizeof(uintptr_t) - 1) |
| & ~(sizeof(uintptr_t) - 1); |
| |
| copy = ngx_array_push_n(conf->headers_set, size); |
| if (copy == NULL) { |
| return NGX_ERROR; |
| } |
| |
| copy->code = ngx_http_script_copy_code; |
| copy->len = src[i].key.len + sizeof(": ") - 1 |
| + src[i].value.len + sizeof(CRLF) - 1; |
| |
| p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); |
| |
| p = ngx_cpymem(p, src[i].key.data, src[i].key.len); |
| *p++ = ':'; *p++ = ' '; |
| p = ngx_cpymem(p, src[i].value.data, src[i].value.len); |
| *p++ = CR; *p = LF; |
| |
| } else { |
| copy = ngx_array_push_n(conf->headers_set_len, |
| sizeof(ngx_http_script_copy_code_t)); |
| if (copy == NULL) { |
| return NGX_ERROR; |
| } |
| |
| copy->code = (ngx_http_script_code_pt) |
| ngx_http_script_copy_len_code; |
| copy->len = src[i].key.len + sizeof(": ") - 1; |
| |
| |
| size = (sizeof(ngx_http_script_copy_code_t) |
| + src[i].key.len + sizeof(": ") - 1 + sizeof(uintptr_t) - 1) |
| & ~(sizeof(uintptr_t) - 1); |
| |
| copy = ngx_array_push_n(conf->headers_set, size); |
| if (copy == NULL) { |
| return NGX_ERROR; |
| } |
| |
| copy->code = ngx_http_script_copy_code; |
| copy->len = src[i].key.len + sizeof(": ") - 1; |
| |
| p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); |
| p = ngx_cpymem(p, src[i].key.data, src[i].key.len); |
| *p++ = ':'; *p = ' '; |
| |
| |
| ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); |
| |
| sc.cf = cf; |
| sc.source = &src[i].value; |
| sc.flushes = &conf->flushes; |
| sc.lengths = &conf->headers_set_len; |
| sc.values = &conf->headers_set; |
| |
| if (ngx_http_script_compile(&sc) != NGX_OK) { |
| return NGX_ERROR; |
| } |
| |
| |
| copy = ngx_array_push_n(conf->headers_set_len, |
| sizeof(ngx_http_script_copy_code_t)); |
| if (copy == NULL) { |
| return NGX_ERROR; |
| } |
| |
| copy->code = (ngx_http_script_code_pt) |
| ngx_http_script_copy_len_code; |
| copy->len = sizeof(CRLF) - 1; |
| |
| |
| size = (sizeof(ngx_http_script_copy_code_t) |
| + sizeof(CRLF) - 1 + sizeof(uintptr_t) - 1) |
| & ~(sizeof(uintptr_t) - 1); |
| |
| copy = ngx_array_push_n(conf->headers_set, size); |
| if (copy == NULL) { |
| return NGX_ERROR; |
| } |
| |
| copy->code = ngx_http_script_copy_code; |
| copy->len = sizeof(CRLF) - 1; |
| |
| p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); |
| *p++ = CR; *p = LF; |
| } |
| |
| code = ngx_array_push_n(conf->headers_set_len, sizeof(uintptr_t)); |
| if (code == NULL) { |
| return NGX_ERROR; |
| } |
| |
| *code = (uintptr_t) NULL; |
| |
| code = ngx_array_push_n(conf->headers_set, sizeof(uintptr_t)); |
| if (code == NULL) { |
| return NGX_ERROR; |
| } |
| |
| *code = (uintptr_t) NULL; |
| } |
| |
| code = ngx_array_push_n(conf->headers_set_len, sizeof(uintptr_t)); |
| if (code == NULL) { |
| return NGX_ERROR; |
| } |
| |
| *code = (uintptr_t) NULL; |
| |
| |
| hash.hash = &conf->headers_set_hash; |
| hash.key = ngx_hash_key_lc; |
| hash.max_size = conf->headers_hash_max_size; |
| hash.bucket_size = conf->headers_hash_bucket_size; |
| hash.name = "proxy_headers_hash"; |
| hash.pool = cf->pool; |
| hash.temp_pool = NULL; |
| |
| if (ngx_hash_init(&hash, conf->headers_names->elts, |
| conf->headers_names->nelts) |
| != NGX_OK) |
| { |
| return NGX_ERROR; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static char * |
| ngx_http_proxy_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| { |
| ngx_http_proxy_loc_conf_t *plcf = conf; |
| |
| size_t add; |
| u_short port; |
| ngx_str_t *value, *url; |
| ngx_url_t u; |
| ngx_uint_t n; |
| ngx_http_core_loc_conf_t *clcf; |
| ngx_http_script_compile_t sc; |
| |
| if (plcf->upstream.upstream || plcf->proxy_lengths) { |
| return "is duplicate"; |
| } |
| |
| clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); |
| |
| clcf->handler = ngx_http_proxy_handler; |
| |
| if (clcf->name.data[clcf->name.len - 1] == '/') { |
| clcf->auto_redirect = 1; |
| } |
| |
| value = cf->args->elts; |
| |
| url = &value[1]; |
| |
| n = ngx_http_script_variables_count(url); |
| |
| if (n) { |
| |
| ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); |
| |
| sc.cf = cf; |
| sc.source = url; |
| sc.lengths = &plcf->proxy_lengths; |
| sc.values = &plcf->proxy_values; |
| sc.variables = n; |
| sc.complete_lengths = 1; |
| sc.complete_values = 1; |
| |
| if (ngx_http_script_compile(&sc) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| #if (NGX_HTTP_SSL) |
| if (ngx_http_proxy_set_ssl(cf, plcf) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| #endif |
| |
| return NGX_CONF_OK; |
| } |
| |
| if (ngx_strncasecmp(url->data, (u_char *) "http://", 7) == 0) { |
| add = 7; |
| port = 80; |
| |
| } else if (ngx_strncasecmp(url->data, (u_char *) "https://", 8) == 0) { |
| |
| #if (NGX_HTTP_SSL) |
| if (ngx_http_proxy_set_ssl(cf, plcf) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| add = 8; |
| port = 443; |
| #else |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "https protocol requires SSL support"); |
| return NGX_CONF_ERROR; |
| #endif |
| |
| } else { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid URL prefix"); |
| return NGX_CONF_ERROR; |
| } |
| |
| ngx_memzero(&u, sizeof(ngx_url_t)); |
| |
| u.url.len = url->len - add; |
| u.url.data = url->data + add; |
| u.default_port = port; |
| u.uri_part = 1; |
| u.no_resolve = 1; |
| |
| plcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); |
| if (plcf->upstream.upstream == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| plcf->vars.schema.len = add; |
| plcf->vars.schema.data = url->data; |
| plcf->vars.key_start = plcf->vars.schema; |
| |
| ngx_http_proxy_set_vars(&u, &plcf->vars); |
| |
| plcf->location = clcf->name; |
| |
| if (clcf->named |
| #if (NGX_PCRE) |
| || clcf->regex |
| #endif |
| || clcf->noname) |
| { |
| if (plcf->vars.uri.len) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "\"proxy_pass\" may not have URI part in " |
| "location given by regular expression, " |
| "or inside named location, " |
| "or inside the \"if\" statement, " |
| "or inside the \"limit_except\" block"); |
| return NGX_CONF_ERROR; |
| } |
| |
| plcf->location.len = 0; |
| } |
| |
| plcf->url = *url; |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static char * |
| ngx_http_proxy_redirect(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| { |
| ngx_http_proxy_loc_conf_t *plcf = conf; |
| |
| ngx_str_t *value; |
| ngx_array_t *vars_lengths, *vars_values; |
| ngx_http_script_compile_t sc; |
| ngx_http_proxy_redirect_t *pr; |
| |
| if (plcf->redirect == 0) { |
| return NGX_CONF_OK; |
| } |
| |
| value = cf->args->elts; |
| |
| if (cf->args->nelts == 2) { |
| if (ngx_strcmp(value[1].data, "off") == 0) { |
| plcf->redirect = 0; |
| plcf->redirects = NULL; |
| return NGX_CONF_OK; |
| } |
| |
| if (ngx_strcmp(value[1].data, "false") == 0) { |
| ngx_conf_log_error(NGX_LOG_ERR, cf, 0, |
| "invalid parameter \"false\", use \"off\" instead"); |
| plcf->redirect = 0; |
| plcf->redirects = NULL; |
| return NGX_CONF_OK; |
| } |
| |
| if (ngx_strcmp(value[1].data, "default") != 0) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "invalid parameter \"%V\"", &value[1]); |
| return NGX_CONF_ERROR; |
| } |
| } |
| |
| if (plcf->redirects == NULL) { |
| plcf->redirects = ngx_array_create(cf->pool, 1, |
| sizeof(ngx_http_proxy_redirect_t)); |
| if (plcf->redirects == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| } |
| |
| pr = ngx_array_push(plcf->redirects); |
| if (pr == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| if (ngx_strcmp(value[1].data, "default") == 0) { |
| if (plcf->url.data == NULL) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "\"proxy_rewrite_location default\" must go " |
| "after the \"proxy_pass\" directive"); |
| return NGX_CONF_ERROR; |
| } |
| |
| pr->handler = ngx_http_proxy_rewrite_redirect_text; |
| pr->redirect = plcf->url; |
| |
| if (plcf->vars.uri.len) { |
| pr->replacement.text = plcf->location; |
| |
| } else { |
| pr->replacement.text.len = 0; |
| pr->replacement.text.data = NULL; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| if (ngx_http_script_variables_count(&value[2]) == 0) { |
| pr->handler = ngx_http_proxy_rewrite_redirect_text; |
| pr->redirect = value[1]; |
| pr->replacement.text = value[2]; |
| |
| return NGX_CONF_OK; |
| } |
| |
| ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); |
| |
| vars_lengths = NULL; |
| vars_values = NULL; |
| |
| sc.cf = cf; |
| sc.source = &value[2]; |
| sc.lengths = &vars_lengths; |
| sc.values = &vars_values; |
| sc.complete_lengths = 1; |
| sc.complete_values = 1; |
| |
| if (ngx_http_script_compile(&sc) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| pr->handler = ngx_http_proxy_rewrite_redirect_vars; |
| pr->redirect = value[1]; |
| pr->replacement.vars.lengths = vars_lengths->elts; |
| pr->replacement.vars.values = vars_values->elts; |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static char * |
| ngx_http_proxy_store(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| { |
| ngx_http_proxy_loc_conf_t *plcf = conf; |
| |
| ngx_str_t *value; |
| ngx_http_script_compile_t sc; |
| |
| if (plcf->upstream.store != NGX_CONF_UNSET |
| || plcf->upstream.store_lengths) |
| { |
| return "is duplicate"; |
| } |
| |
| value = cf->args->elts; |
| |
| if (ngx_strcmp(value[1].data, "off") == 0) { |
| plcf->upstream.store = 0; |
| return NGX_CONF_OK; |
| } |
| |
| #if (NGX_HTTP_CACHE) |
| |
| if (plcf->upstream.cache != NGX_CONF_UNSET_PTR |
| && plcf->upstream.cache != NULL) |
| { |
| return "is incompatible with \"proxy_cache\""; |
| } |
| |
| #endif |
| |
| if (ngx_strcmp(value[1].data, "on") == 0) { |
| plcf->upstream.store = 1; |
| return NGX_CONF_OK; |
| } |
| |
| /* include the terminating '\0' into script */ |
| value[1].len++; |
| |
| ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); |
| |
| sc.cf = cf; |
| sc.source = &value[1]; |
| sc.lengths = &plcf->upstream.store_lengths; |
| sc.values = &plcf->upstream.store_values; |
| sc.variables = ngx_http_script_variables_count(&value[1]); |
| sc.complete_lengths = 1; |
| sc.complete_values = 1; |
| |
| if (ngx_http_script_compile(&sc) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| #if (NGX_HTTP_CACHE) |
| |
| static char * |
| ngx_http_proxy_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| { |
| ngx_http_proxy_loc_conf_t *plcf = conf; |
| |
| ngx_str_t *value; |
| |
| value = cf->args->elts; |
| |
| if (plcf->upstream.cache != NGX_CONF_UNSET_PTR) { |
| return "is duplicate"; |
| } |
| |
| if (ngx_strcmp(value[1].data, "off") == 0) { |
| plcf->upstream.cache = NULL; |
| return NGX_CONF_OK; |
| } |
| |
| if (plcf->upstream.store > 0 || plcf->upstream.store_lengths) { |
| return "is incompatible with \"proxy_store\""; |
| } |
| |
| plcf->upstream.cache = ngx_shared_memory_add(cf, &value[1], 0, |
| &ngx_http_proxy_module); |
| if (plcf->upstream.cache == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static char * |
| ngx_http_proxy_cache_key(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| { |
| ngx_http_proxy_loc_conf_t *plcf = conf; |
| |
| ngx_str_t *value; |
| ngx_http_compile_complex_value_t ccv; |
| |
| value = cf->args->elts; |
| |
| if (plcf->cache_key.value.len) { |
| return "is duplicate"; |
| } |
| |
| ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
| |
| ccv.cf = cf; |
| ccv.value = &value[1]; |
| ccv.complex_value = &plcf->cache_key; |
| |
| if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| #endif |
| |
| |
| static char * |
| ngx_http_proxy_lowat_check(ngx_conf_t *cf, void *post, void *data) |
| { |
| #if (NGX_FREEBSD) |
| ssize_t *np = data; |
| |
| if ((u_long) *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; |
| } |
| |
| |
| static char * |
| ngx_http_proxy_upstream_max_fails_unsupported(ngx_conf_t *cf, |
| ngx_command_t *cmd, void *conf) |
| { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "\"proxy_upstream_max_fails\" is not supported, " |
| "use the \"max_fails\" parameter of the \"server\" directive ", |
| "inside the \"upstream\" block"); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| |
| static char * |
| ngx_http_proxy_upstream_fail_timeout_unsupported(ngx_conf_t *cf, |
| ngx_command_t *cmd, void *conf) |
| { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "\"proxy_upstream_fail_timeout\" is not supported, " |
| "use the \"fail_timeout\" parameter of the \"server\" directive ", |
| "inside the \"upstream\" block"); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| |
| #if (NGX_HTTP_SSL) |
| |
| static ngx_int_t |
| ngx_http_proxy_set_ssl(ngx_conf_t *cf, ngx_http_proxy_loc_conf_t *plcf) |
| { |
| ngx_pool_cleanup_t *cln; |
| |
| plcf->upstream.ssl = ngx_pcalloc(cf->pool, sizeof(ngx_ssl_t)); |
| if (plcf->upstream.ssl == NULL) { |
| return NGX_ERROR; |
| } |
| |
| plcf->upstream.ssl->log = cf->log; |
| |
| if (ngx_ssl_create(plcf->upstream.ssl, |
| NGX_SSL_SSLv2|NGX_SSL_SSLv3|NGX_SSL_TLSv1, NULL) |
| != NGX_OK) |
| { |
| return NGX_ERROR; |
| } |
| |
| cln = ngx_pool_cleanup_add(cf->pool, 0); |
| if (cln == NULL) { |
| return NGX_ERROR; |
| } |
| |
| cln->handler = ngx_ssl_cleanup_ctx; |
| cln->data = plcf->upstream.ssl; |
| |
| return NGX_OK; |
| } |
| |
| #endif |
| |
| |
| static void |
| ngx_http_proxy_set_vars(ngx_url_t *u, ngx_http_proxy_vars_t *v) |
| { |
| if (u->family != AF_UNIX) { |
| |
| if (u->no_port || u->port == u->default_port) { |
| |
| v->host_header = u->host; |
| |
| if (u->default_port == 80) { |
| v->port.len = sizeof("80") - 1; |
| v->port.data = (u_char *) "80"; |
| |
| } else { |
| v->port.len = sizeof("443") - 1; |
| v->port.data = (u_char *) "443"; |
| } |
| |
| } else { |
| v->host_header.len = u->host.len + 1 + u->port_text.len; |
| v->host_header.data = u->host.data; |
| v->port = u->port_text; |
| } |
| |
| v->key_start.len += v->host_header.len; |
| |
| } else { |
| v->host_header.len = sizeof("localhost") - 1; |
| v->host_header.data = (u_char *) "localhost"; |
| v->port.len = 0; |
| v->port.data = (u_char *) ""; |
| v->key_start.len += sizeof("unix:") - 1 + u->host.len + 1; |
| } |
| |
| v->uri = u->uri; |
| } |