Mercurial > hg > nginx
view src/http/modules/ngx_http_proxy_module.c @ 7676:d225b70d38b6
Proxy: detection of data after final chunk.
Previously, additional data after final chunk was either ignored
(in the same buffer, or during unbuffered proxying) or sent to the
client (in the next buffer already if it was already read from the
socket). Now additional data are properly detected and ignored
in all cases. Additionally, a warning is now logged and keepalive
is disabled in the connection.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Mon, 06 Jul 2020 18:36:20 +0300 |
| parents | 9afa45068b8f |
| children | a786e491d08d |
line wrap: on
line source
/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> typedef struct { ngx_array_t caches; /* ngx_http_file_cache_t * */ } ngx_http_proxy_main_conf_t; typedef struct ngx_http_proxy_rewrite_s ngx_http_proxy_rewrite_t; typedef ngx_int_t (*ngx_http_proxy_rewrite_pt)(ngx_http_request_t *r, ngx_table_elt_t *h, size_t prefix, size_t len, ngx_http_proxy_rewrite_t *pr); struct ngx_http_proxy_rewrite_s { ngx_http_proxy_rewrite_pt handler; union { ngx_http_complex_value_t complex; #if (NGX_PCRE) ngx_http_regex_t *regex; #endif } pattern; ngx_http_complex_value_t 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_array_t *flushes; ngx_array_t *lengths; ngx_array_t *values; ngx_hash_t hash; } ngx_http_proxy_headers_t; typedef struct { ngx_http_upstream_conf_t upstream; ngx_array_t *body_flushes; ngx_array_t *body_lengths; ngx_array_t *body_values; ngx_str_t body_source; ngx_http_proxy_headers_t headers; #if (NGX_HTTP_CACHE) ngx_http_proxy_headers_t headers_cache; #endif ngx_array_t *headers_source; ngx_array_t *proxy_lengths; ngx_array_t *proxy_values; ngx_array_t *redirects; ngx_array_t *cookie_domains; ngx_array_t *cookie_paths; ngx_http_complex_value_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 http_version; ngx_uint_t headers_hash_max_size; ngx_uint_t headers_hash_bucket_size; #if (NGX_HTTP_SSL) ngx_uint_t ssl; ngx_uint_t ssl_protocols; ngx_str_t ssl_ciphers; ngx_uint_t ssl_verify_depth; ngx_str_t ssl_trusted_certificate; ngx_str_t ssl_crl; ngx_str_t ssl_certificate; ngx_str_t ssl_certificate_key; ngx_array_t *ssl_passwords; #endif } ngx_http_proxy_loc_conf_t; typedef struct { ngx_http_status_t status; ngx_http_chunked_t chunked; ngx_http_proxy_vars_t vars; off_t internal_body_length; ngx_chain_t *free; ngx_chain_t *busy; unsigned head:1; unsigned internal_chunked:1; unsigned header_sent:1; } ngx_http_proxy_ctx_t; 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_body_output_filter(void *data, ngx_chain_t *in); static ngx_int_t ngx_http_proxy_process_status_line(ngx_http_request_t *r); static ngx_int_t ngx_http_proxy_process_header(ngx_http_request_t *r); static ngx_int_t ngx_http_proxy_input_filter_init(void *data); static ngx_int_t ngx_http_proxy_copy_filter(ngx_event_pipe_t *p, ngx_buf_t *buf); static ngx_int_t ngx_http_proxy_chunked_filter(ngx_event_pipe_t *p, ngx_buf_t *buf); static ngx_int_t ngx_http_proxy_non_buffered_copy_filter(void *data, ssize_t bytes); static ngx_int_t ngx_http_proxy_non_buffered_chunked_filter(void *data, ssize_t bytes); 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_internal_chunked_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_rewrite_cookie(ngx_http_request_t *r, ngx_table_elt_t *h); static ngx_int_t ngx_http_proxy_rewrite_cookie_value(ngx_http_request_t *r, ngx_table_elt_t *h, u_char *value, ngx_array_t *rewrites); static ngx_int_t ngx_http_proxy_rewrite(ngx_http_request_t *r, ngx_table_elt_t *h, size_t prefix, size_t len, ngx_str_t *replacement); static ngx_int_t ngx_http_proxy_add_variables(ngx_conf_t *cf); static void *ngx_http_proxy_create_main_conf(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_init_headers(ngx_conf_t *cf, ngx_http_proxy_loc_conf_t *conf, ngx_http_proxy_headers_t *headers, ngx_keyval_t *default_headers); 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_cookie_domain(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_proxy_cookie_path(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 #if (NGX_HTTP_SSL) static char *ngx_http_proxy_ssl_password_file(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 ngx_int_t ngx_http_proxy_rewrite_regex(ngx_conf_t *cf, ngx_http_proxy_rewrite_t *pr, ngx_str_t *regex, ngx_uint_t caseless); #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("non_idempotent"), NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT }, { 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_403"), NGX_HTTP_UPSTREAM_FT_HTTP_403 }, { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, { ngx_string("http_429"), NGX_HTTP_UPSTREAM_FT_HTTP_429 }, { ngx_string("updating"), NGX_HTTP_UPSTREAM_FT_UPDATING }, { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF }, { ngx_null_string, 0 } }; #if (NGX_HTTP_SSL) static ngx_conf_bitmask_t ngx_http_proxy_ssl_protocols[] = { { ngx_string("SSLv2"), NGX_SSL_SSLv2 }, { ngx_string("SSLv3"), NGX_SSL_SSLv3 }, { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, { ngx_string("TLSv1.1"), NGX_SSL_TLSv1_1 }, { ngx_string("TLSv1.2"), NGX_SSL_TLSv1_2 }, { ngx_string("TLSv1.3"), NGX_SSL_TLSv1_3 }, { ngx_null_string, 0 } }; #endif static ngx_conf_enum_t ngx_http_proxy_http_version[] = { { ngx_string("1.0"), NGX_HTTP_VERSION_10 }, { ngx_string("1.1"), NGX_HTTP_VERSION_11 }, { 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_cookie_domain"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, ngx_http_proxy_cookie_domain, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, { ngx_string("proxy_cookie_path"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, ngx_http_proxy_cookie_path, 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_request_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.request_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_bind"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, ngx_http_upstream_bind_set_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_proxy_loc_conf_t, upstream.local), NULL }, { ngx_string("proxy_socket_keepalive"), 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.socket_keepalive), 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_http_set_complex_value_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 }, { ngx_string("proxy_force_ranges"), 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.force_ranges), NULL }, { ngx_string("proxy_limit_rate"), 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.limit_rate), NULL }, #if (NGX_HTTP_CACHE) { ngx_string("proxy_cache"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, 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_TAKE1, 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, NGX_HTTP_MAIN_CONF_OFFSET, offsetof(ngx_http_proxy_main_conf_t, caches), &ngx_http_proxy_module }, { ngx_string("proxy_cache_bypass"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, ngx_http_set_predicate_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_proxy_loc_conf_t, upstream.cache_bypass), NULL }, { ngx_string("proxy_no_cache"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, ngx_http_set_predicate_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_proxy_loc_conf_t, upstream.no_cache), NULL }, { 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_max_range_offset"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, ngx_conf_set_off_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_proxy_loc_conf_t, upstream.cache_max_range_offset), 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 }, { ngx_string("proxy_cache_lock"), 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.cache_lock), NULL }, { ngx_string("proxy_cache_lock_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.cache_lock_timeout), NULL }, { ngx_string("proxy_cache_lock_age"), 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.cache_lock_age), NULL }, { ngx_string("proxy_cache_revalidate"), 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.cache_revalidate), NULL }, { ngx_string("proxy_cache_convert_head"), 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.cache_convert_head), NULL }, { ngx_string("proxy_cache_background_update"), 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.cache_background_update), NULL }, #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_next_upstream_tries"), 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.next_upstream_tries), NULL }, { ngx_string("proxy_next_upstream_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.next_upstream_timeout), NULL }, { ngx_string("proxy_pass_header"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, 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_TAKE1, 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_upstream_ignore_headers_masks }, { ngx_string("proxy_http_version"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, ngx_conf_set_enum_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_proxy_loc_conf_t, http_version), &ngx_http_proxy_http_version }, #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 }, { ngx_string("proxy_ssl_protocols"), 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, ssl_protocols), &ngx_http_proxy_ssl_protocols }, { ngx_string("proxy_ssl_ciphers"), 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, ssl_ciphers), NULL }, { ngx_string("proxy_ssl_name"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, ngx_http_set_complex_value_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_proxy_loc_conf_t, upstream.ssl_name), NULL }, { ngx_string("proxy_ssl_server_name"), 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_server_name), NULL }, { ngx_string("proxy_ssl_verify"), 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_verify), NULL }, { ngx_string("proxy_ssl_verify_depth"), 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, ssl_verify_depth), NULL }, { ngx_string("proxy_ssl_trusted_certificate"), 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, ssl_trusted_certificate), NULL }, { ngx_string("proxy_ssl_crl"), 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, ssl_crl), NULL }, { ngx_string("proxy_ssl_certificate"), 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, ssl_certificate), NULL }, { ngx_string("proxy_ssl_certificate_key"), 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, ssl_certificate_key), NULL }, { ngx_string("proxy_ssl_password_file"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, ngx_http_proxy_ssl_password_file, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, #endif ngx_null_command }; static ngx_http_module_t ngx_http_proxy_module_ctx = { ngx_http_proxy_add_variables, /* preconfiguration */ NULL, /* postconfiguration */ ngx_http_proxy_create_main_conf, /* create main configuration */ NULL, /* init main configuration */ NULL, /* create server configuration */ NULL, /* merge server configuration */ ngx_http_proxy_create_loc_conf, /* create location configuration */ ngx_http_proxy_merge_loc_conf /* merge location configuration */ }; 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 char ngx_http_proxy_version_11[] = " HTTP/1.1" CRLF; static ngx_keyval_t ngx_http_proxy_headers[] = { { ngx_string("Host"), ngx_string("$proxy_host") }, { ngx_string("Connection"), ngx_string("close") }, { ngx_string("Content-Length"), ngx_string("$proxy_internal_body_length") }, { ngx_string("Transfer-Encoding"), ngx_string("$proxy_internal_chunked") }, { ngx_string("TE"), ngx_string("") }, { ngx_string("Keep-Alive"), ngx_string("") }, { ngx_string("Expect"), ngx_string("") }, { ngx_string("Upgrade"), ngx_string("") }, { ngx_null_string, ngx_null_string } }; static ngx_str_t ngx_http_proxy_hide_headers[] = { ngx_string("Date"), ngx_string("Server"), ngx_string("X-Pad"), ngx_string("X-Accel-Expires"), ngx_string("X-Accel-Redirect"), ngx_string("X-Accel-Limit-Rate"), ngx_string("X-Accel-Buffering"), ngx_string("X-Accel-Charset"), ngx_null_string }; #if (NGX_HTTP_CACHE) static ngx_keyval_t ngx_http_proxy_cache_headers[] = { { ngx_string("Host"), ngx_string("$proxy_host") }, { ngx_string("Connection"), ngx_string("close") }, { ngx_string("Content-Length"), ngx_string("$proxy_internal_body_length") }, { ngx_string("Transfer-Encoding"), ngx_string("$proxy_internal_chunked") }, { ngx_string("TE"), ngx_string("") }, { ngx_string("Keep-Alive"), ngx_string("") }, { ngx_string("Expect"), ngx_string("") }, { ngx_string("Upgrade"), ngx_string("") }, { ngx_string("If-Modified-Since"), ngx_string("$upstream_cache_last_modified") }, { ngx_string("If-Unmodified-Since"), ngx_string("") }, { ngx_string("If-None-Match"), ngx_string("$upstream_cache_etag") }, { ngx_string("If-Match"), ngx_string("") }, { ngx_string("Range"), ngx_string("") }, { ngx_string("If-Range"), ngx_string("") }, { ngx_null_string, 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_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, { ngx_string("proxy_internal_chunked"), NULL, ngx_http_proxy_internal_chunked_variable, 0, NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, ngx_http_null_variable }; 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_CACHE) ngx_http_proxy_main_conf_t *pmcf; #endif 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_HTTP_INTERNAL_SERVER_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 == NULL) { 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) pmcf = ngx_http_get_module_main_conf(r, ngx_http_proxy_module); u->caches = &pmcf->caches; 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; r->state = 0; if (plcf->redirects) { u->rewrite_redirect = ngx_http_proxy_rewrite_redirect; } if (plcf->cookie_domains || plcf->cookie_paths) { u->rewrite_cookie = ngx_http_proxy_rewrite_cookie; } 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_http_proxy_copy_filter; u->pipe->input_ctx = r; u->input_filter_init = ngx_http_proxy_input_filter_init; u->input_filter = ngx_http_proxy_non_buffered_copy_filter; u->input_filter_ctx = r; u->accel = 1; if (!plcf->upstream.request_buffering && plcf->body_values == NULL && plcf->upstream.pass_request_body && (!r->headers_in.chunked || plcf->http_version == NGX_HTTP_VERSION_11)) { r->request_body_no_buffering = 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 (proxy.len > 7 && ngx_strncasecmp(proxy.data, (u_char *) "http://", 7) == 0) { add = 7; port = 80; #if (NGX_HTTP_SSL) } else if (proxy.len > 8 && 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) { if (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) { u->resolved->sockaddr = url.addrs[0].sockaddr; u->resolved->socklen = url.addrs[0].socklen; u->resolved->name = url.addrs[0].name; u->resolved->naddrs = 1; } 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.data) { 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 && ctx->vars.uri.len) { *key = ctx->vars.uri; u->uri = ctx->vars.uri; return NGX_OK; } else if (ctx->vars.uri.len == 0 && r->valid_unparsed_uri) { *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->space_in_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, key_len, val_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_proxy_headers_t *headers; 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 (NGX_HTTP_CACHE) headers = u->cacheable ? &plcf->headers_cache : &plcf->headers; #else headers = &plcf->headers; #endif if (u->method.len) { /* HEAD was changed to GET to cache response */ method = u->method; } else if (plcf->method) { if (ngx_http_complex_value(r, plcf->method, &method) != NGX_OK) { return NGX_ERROR; } } else { method = r->method_name; } ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module); if (method.len == 4 && ngx_strncasecmp(method.data, (u_char *) "HEAD", 4) == 0) { ctx->head = 1; } len = method.len + 1 + sizeof(ngx_http_proxy_version) - 1 + sizeof(CRLF) - 1; escape = 0; loc_len = 0; unparsed_uri = 0; if (plcf->proxy_lengths && ctx->vars.uri.len) { uri_len = ctx->vars.uri.len; } else if (ctx->vars.uri.len == 0 && r->valid_unparsed_uri) { 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->space_in_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_memzero(&le, sizeof(ngx_http_script_engine_t)); ngx_http_script_flush_no_cacheable_variables(r, plcf->body_flushes); ngx_http_script_flush_no_cacheable_variables(r, headers->flushes); if (plcf->body_lengths) { le.ip = plcf->body_lengths->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; } else if (r->headers_in.chunked && r->reading_body) { ctx->internal_body_length = -1; ctx->internal_chunked = 1; } else { ctx->internal_body_length = r->headers_in.content_length_n; } le.ip = headers->lengths->elts; le.request = r; le.flushed = 1; while (*(uintptr_t *) le.ip) { lcode = *(ngx_http_script_len_code_pt *) le.ip; key_len = lcode(&le); for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { lcode = *(ngx_http_script_len_code_pt *) le.ip; } le.ip += sizeof(uintptr_t); if (val_len == 0) { continue; } len += key_len + sizeof(": ") - 1 + val_len + sizeof(CRLF) - 1; } 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(&headers->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); *b->last++ = ' '; u->uri.data = b->last; if (plcf->proxy_lengths && ctx->vars.uri.len) { 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; if (plcf->http_version == NGX_HTTP_VERSION_11) { b->last = ngx_cpymem(b->last, ngx_http_proxy_version_11, sizeof(ngx_http_proxy_version_11) - 1); } else { 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 = headers->values->elts; e.pos = b->last; e.request = r; e.flushed = 1; le.ip = headers->lengths->elts; while (*(uintptr_t *) le.ip) { lcode = *(ngx_http_script_len_code_pt *) le.ip; (void) lcode(&le); for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { lcode = *(ngx_http_script_len_code_pt *) le.ip; } le.ip += sizeof(uintptr_t); if (val_len == 0) { e.skip = 1; 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); e.skip = 0; continue; } code = *(ngx_http_script_code_pt *) e.ip; code((ngx_http_script_engine_t *) &e); *e.pos++ = ':'; *e.pos++ = ' '; 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); *e.pos++ = CR; *e.pos++ = LF; } 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(&headers->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_values) { e.ip = plcf->body_values->elts; e.pos = b->last; e.skip = 0; 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 (r->request_body_no_buffering) { u->request_bufs = cl; if (ctx->internal_chunked) { u->output.output_filter = ngx_http_proxy_body_output_filter; u->output.filter_ctx = r; } } else if (plcf->body_values == 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; } } else { u->request_bufs = cl; } b->flush = 1; 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.code = 0; ctx->status.count = 0; ctx->status.start = NULL; ctx->status.end = NULL; ctx->chunked.state = 0; r->upstream->process_header = ngx_http_proxy_process_status_line; r->upstream->pipe->input_filter = ngx_http_proxy_copy_filter; r->upstream->input_filter = ngx_http_proxy_non_buffered_copy_filter; r->state = 0; return NGX_OK; } static ngx_int_t ngx_http_proxy_body_output_filter(void *data, ngx_chain_t *in) { ngx_http_request_t *r = data; off_t size; u_char *chunk; ngx_int_t rc; ngx_buf_t *b; ngx_chain_t *out, *cl, *tl, **ll, **fl; ngx_http_proxy_ctx_t *ctx; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "proxy output filter"); ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module); if (in == NULL) { out = in; goto out; } out = NULL; ll = &out; if (!ctx->header_sent) { /* first buffer contains headers, pass it unmodified */ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "proxy output header"); ctx->header_sent = 1; tl = ngx_alloc_chain_link(r->pool); if (tl == NULL) { return NGX_ERROR; } tl->buf = in->buf; *ll = tl; ll = &tl->next; in = in->next; if (in == NULL) { tl->next = NULL; goto out; } } size = 0; cl = in; fl = ll; for ( ;; ) { ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "proxy output chunk: %O", ngx_buf_size(cl->buf)); size += ngx_buf_size(cl->buf); if (cl->buf->flush || cl->buf->sync || ngx_buf_in_memory(cl->buf) || cl->buf->in_file) { tl = ngx_alloc_chain_link(r->pool); if (tl == NULL) { return NGX_ERROR; } tl->buf = cl->buf; *ll = tl; ll = &tl->next; } if (cl->next == NULL) { break; } cl = cl->next; } if (size) { tl = ngx_chain_get_free_buf(r->pool, &ctx->free); if (tl == NULL) { return NGX_ERROR; } b = tl->buf; chunk = b->start; if (chunk == NULL) { /* the "0000000000000000" is 64-bit hexadecimal string */ chunk = ngx_palloc(r->pool, sizeof("0000000000000000" CRLF) - 1); if (chunk == NULL) { return NGX_ERROR; } b->start = chunk; b->end = chunk + sizeof("0000000000000000" CRLF) - 1; } b->tag = (ngx_buf_tag_t) &ngx_http_proxy_body_output_filter; b->memory = 0; b->temporary = 1; b->pos = chunk; b->last = ngx_sprintf(chunk, "%xO" CRLF, size); tl->next = *fl; *fl = tl; } if (cl->buf->last_buf) { tl = ngx_chain_get_free_buf(r->pool, &ctx->free); if (tl == NULL) { return NGX_ERROR; } b = tl->buf; b->tag = (ngx_buf_tag_t) &ngx_http_proxy_body_output_filter; b->temporary = 0; b->memory = 1; b->last_buf = 1; b->pos = (u_char *) CRLF "0" CRLF CRLF; b->last = b->pos + 7; cl->buf->last_buf = 0; *ll = tl; if (size == 0) { b->pos += 2; } } else if (size > 0) { tl = ngx_chain_get_free_buf(r->pool, &ctx->free); if (tl == NULL) { return NGX_ERROR; } b = tl->buf; b->tag = (ngx_buf_tag_t) &ngx_http_proxy_body_output_filter; b->temporary = 0; b->memory = 1; b->pos = (u_char *) CRLF; b->last = b->pos + 2; *ll = tl; } else { *ll = NULL; } out: rc = ngx_chain_writer(&r->upstream->writer, out); ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &out, (ngx_buf_tag_t) &ngx_http_proxy_body_output_filter); return rc; } static ngx_int_t ngx_http_proxy_process_status_line(ngx_http_request_t *r) { size_t len; 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; } u = r->upstream; rc = ngx_http_parse_status_line(r, &u->buffer, &ctx->status); if (rc == NGX_AGAIN) { return rc; } if (rc == NGX_ERROR) { #if (NGX_HTTP_CACHE) if (r->cache) { r->http_version = NGX_HTTP_VERSION_9; 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->state->status = NGX_HTTP_OK; u->headers_in.connection_close = 1; return NGX_OK; } if (u->state && u->state->status == 0) { u->state->status = ctx->status.code; } u->headers_in.status_n = ctx->status.code; len = ctx->status.end - ctx->status.start; u->headers_in.status_line.len = len; u->headers_in.status_line.data = ngx_pnalloc(r->pool, len); if (u->headers_in.status_line.data == NULL) { return NGX_ERROR; } ngx_memcpy(u->headers_in.status_line.data, ctx->status.start, 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); if (ctx->status.http_version < NGX_HTTP_VERSION_11) { u->headers_in.connection_close = 1; } u->process_header = ngx_http_proxy_process_header; return ngx_http_proxy_process_header(r); } 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_t *u; ngx_http_proxy_ctx_t *ctx; 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) { h->hash = 0; 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_memcpy(h->key.data, r->header_name_start, h->key.len); h->key.data[h->key.len] = '\0'; ngx_memcpy(h->value.data, r->header_start, h->value.len); h->value.data[h->value.len] = '\0'; 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'); ngx_str_set(&h->key, "Server"); ngx_str_null(&h->value); 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'); ngx_str_set(&h->key, "Date"); ngx_str_null(&h->value); h->lowcase_key = (u_char *) "date"; } /* clear content length if response is chunked */ u = r->upstream; if (u->headers_in.chunked) { u->headers_in.content_length_n = -1; } /* * set u->keepalive if response has no body; this allows to keep * connections alive in case of r->header_only or X-Accel-Redirect */ ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module); if (u->headers_in.status_n == NGX_HTTP_NO_CONTENT || u->headers_in.status_n == NGX_HTTP_NOT_MODIFIED || ctx->head || (!u->headers_in.chunked && u->headers_in.content_length_n == 0)) { u->keepalive = !u->headers_in.connection_close; } if (u->headers_in.status_n == NGX_HTTP_SWITCHING_PROTOCOLS) { u->keepalive = 0; if (r->headers_in.upgrade) { u->upgrade = 1; } } 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 ngx_int_t ngx_http_proxy_input_filter_init(void *data) { ngx_http_request_t *r = data; ngx_http_upstream_t *u; ngx_http_proxy_ctx_t *ctx; u = r->upstream; ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module); if (ctx == NULL) { return NGX_ERROR; } ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http proxy filter init s:%ui h:%d c:%d l:%O", u->headers_in.status_n, ctx->head, u->headers_in.chunked, u->headers_in.content_length_n); /* as per RFC2616, 4.4 Message Length */ if (u->headers_in.status_n == NGX_HTTP_NO_CONTENT || u->headers_in.status_n == NGX_HTTP_NOT_MODIFIED || ctx->head) { /* 1xx, 204, and 304 and replies to HEAD requests */ /* no 1xx since we don't send Expect and Upgrade */ u->pipe->length = 0; u->length = 0; u->keepalive = !u->headers_in.connection_close; } else if (u->headers_in.chunked) { /* chunked */ u->pipe->input_filter = ngx_http_proxy_chunked_filter; u->pipe->length = 3; /* "0" LF LF */ u->input_filter = ngx_http_proxy_non_buffered_chunked_filter; u->length = 1; } else if (u->headers_in.content_length_n == 0) { /* empty body: special case as filter won't be called */ u->pipe->length = 0; u->length = 0; u->keepalive = !u->headers_in.connection_close; } else { /* content length or connection close */ u->pipe->length = u->headers_in.content_length_n; u->length = u->headers_in.content_length_n; } return NGX_OK; } static ngx_int_t ngx_http_proxy_copy_filter(ngx_event_pipe_t *p, ngx_buf_t *buf) { ngx_buf_t *b; ngx_chain_t *cl; ngx_http_request_t *r; if (buf->pos == buf->last) { return NGX_OK; } if (p->upstream_done) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, p->log, 0, "http proxy data after close"); return NGX_OK; } if (p->length == 0) { ngx_log_error(NGX_LOG_WARN, p->log, 0, "upstream sent more data than specified in " "\"Content-Length\" header"); r = p->input_ctx; r->upstream->keepalive = 0; p->upstream_done = 1; return NGX_OK; } cl = ngx_chain_get_free_buf(p->pool, &p->free); if (cl == NULL) { return NGX_ERROR; } b = cl->buf; ngx_memcpy(b, buf, sizeof(ngx_buf_t)); b->shadow = buf; b->tag = p->tag; b->last_shadow = 1; b->recycled = 1; buf->shadow = b; ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0, "input buf #%d", b->num); if (p->in) { *p->last_in = cl; } else { p->in = cl; } p->last_in = &cl->next; if (p->length == -1) { return NGX_OK; } if (b->last - b->pos > p->length) { ngx_log_error(NGX_LOG_WARN, p->log, 0, "upstream sent more data than specified in " "\"Content-Length\" header"); b->last = b->pos + p->length; p->upstream_done = 1; return NGX_OK; } p->length -= b->last - b->pos; if (p->length == 0) { r = p->input_ctx; r->upstream->keepalive = !r->upstream->headers_in.connection_close; } return NGX_OK; } static ngx_int_t ngx_http_proxy_chunked_filter(ngx_event_pipe_t *p, ngx_buf_t *buf) { ngx_int_t rc; ngx_buf_t *b, **prev; ngx_chain_t *cl; ngx_http_request_t *r; ngx_http_proxy_ctx_t *ctx; if (buf->pos == buf->last) { return NGX_OK; } r = p->input_ctx; ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module); if (ctx == NULL) { return NGX_ERROR; } if (p->upstream_done) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, p->log, 0, "http proxy data after close"); return NGX_OK; } if (p->length == 0) { ngx_log_error(NGX_LOG_WARN, p->log, 0, "upstream sent data after final chunk"); r->upstream->keepalive = 0; p->upstream_done = 1; return NGX_OK; } b = NULL; prev = &buf->shadow; for ( ;; ) { rc = ngx_http_parse_chunked(r, buf, &ctx->chunked); if (rc == NGX_OK) { /* a chunk has been parsed successfully */ cl = ngx_chain_get_free_buf(p->pool, &p->free); if (cl == NULL) { return NGX_ERROR; } b = cl->buf; ngx_memzero(b, sizeof(ngx_buf_t)); b->pos = buf->pos; b->start = buf->start; b->end = buf->end; b->tag = p->tag; b->temporary = 1; b->recycled = 1; *prev = b; prev = &b->shadow; if (p->in) { *p->last_in = cl; } else { p->in = cl; } p->last_in = &cl->next; /* STUB */ b->num = buf->num; ngx_log_debug2(NGX_LOG_DEBUG_EVENT, p->log, 0, "input buf #%d %p", b->num, b->pos); if (buf->last - buf->pos >= ctx->chunked.size) { buf->pos += (size_t) ctx->chunked.size; b->last = buf->pos; ctx->chunked.size = 0; continue; } ctx->chunked.size -= buf->last - buf->pos; buf->pos = buf->last; b->last = buf->last; continue; } if (rc == NGX_DONE) { /* a whole response has been parsed successfully */ p->length = 0; r->upstream->keepalive = !r->upstream->headers_in.connection_close; if (buf->pos != buf->last) { ngx_log_error(NGX_LOG_WARN, p->log, 0, "upstream sent data after final chunk"); r->upstream->keepalive = 0; } break; } if (rc == NGX_AGAIN) { /* set p->length, minimal amount of data we want to see */ p->length = ctx->chunked.length; break; } /* invalid response */ ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "upstream sent invalid chunked response"); return NGX_ERROR; } ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http proxy chunked state %ui, length %O", ctx->chunked.state, p->length); if (b) { b->shadow = buf; b->last_shadow = 1; ngx_log_debug2(NGX_LOG_DEBUG_EVENT, p->log, 0, "input buf %p %z", b->pos, b->last - b->pos); return NGX_OK; } /* there is no data record in the buf, add it to free chain */ if (ngx_event_pipe_add_free_buf(p, buf) != NGX_OK) { return NGX_ERROR; } return NGX_OK; } static ngx_int_t ngx_http_proxy_non_buffered_copy_filter(void *data, ssize_t bytes) { ngx_http_request_t *r = data; ngx_buf_t *b; ngx_chain_t *cl, **ll; ngx_http_upstream_t *u; u = r->upstream; for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { ll = &cl->next; } cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs); if (cl == NULL) { return NGX_ERROR; } *ll = cl; cl->buf->flush = 1; cl->buf->memory = 1; b = &u->buffer; cl->buf->pos = b->last; b->last += bytes; cl->buf->last = b->last; cl->buf->tag = u->output.tag; if (u->length == -1) { return NGX_OK; } if (bytes > u->length) { ngx_log_error(NGX_LOG_WARN, r->connection->log, 0, "upstream sent more data than specified in " "\"Content-Length\" header"); cl->buf->last = cl->buf->pos + u->length; u->length = 0; return NGX_OK; } u->length -= bytes; if (u->length == 0) { u->keepalive = !u->headers_in.connection_close; } return NGX_OK; } static ngx_int_t ngx_http_proxy_non_buffered_chunked_filter(void *data, ssize_t bytes) { ngx_http_request_t *r = data; ngx_int_t rc; ngx_buf_t *b, *buf; ngx_chain_t *cl, **ll; 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; } u = r->upstream; buf = &u->buffer; buf->pos = buf->last; buf->last += bytes; for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { ll = &cl->next; } for ( ;; ) { rc = ngx_http_parse_chunked(r, buf, &ctx->chunked); if (rc == NGX_OK) { /* a chunk has been parsed successfully */ cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs); if (cl == NULL) { return NGX_ERROR; } *ll = cl; ll = &cl->next; b = cl->buf; b->flush = 1; b->memory = 1; b->pos = buf->pos; b->tag = u->output.tag; if (buf->last - buf->pos >= ctx->chunked.size) { buf->pos += (size_t) ctx->chunked.size; b->last = buf->pos; ctx->chunked.size = 0; } else { ctx->chunked.size -= buf->last - buf->pos; buf->pos = buf->last; b->last = buf->last; } ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http proxy out buf %p %z", b->pos, b->last - b->pos); continue; } if (rc == NGX_DONE) { /* a whole response has been parsed successfully */ u->keepalive = !u->headers_in.connection_close; u->length = 0; if (buf->pos != buf->last) { ngx_log_error(NGX_LOG_WARN, r->connection->log, 0, "upstream sent data after final chunk"); u->keepalive = 0; } break; } if (rc == NGX_AGAIN) { break; } /* invalid response */ ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "upstream sent invalid chunked response"); return NGX_ERROR; } return NGX_OK; } 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) { size_t len; u_char *p; ngx_uint_t i, n; ngx_table_elt_t **h; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; n = r->headers_in.x_forwarded_for.nelts; h = r->headers_in.x_forwarded_for.elts; len = 0; for (i = 0; i < n; i++) { len += h[i]->value.len + sizeof(", ") - 1; } if (len == 0) { v->len = r->connection->addr_text.len; v->data = r->connection->addr_text.data; return NGX_OK; } len += r->connection->addr_text.len; p = ngx_pnalloc(r->pool, len); if (p == NULL) { return NGX_ERROR; } v->len = len; v->data = p; for (i = 0; i < n; i++) { p = ngx_copy(p, h[i]->value.data, h[i]->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 || ctx->internal_body_length < 0) { v->not_found = 1; return NGX_OK; } v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = ngx_pnalloc(r->pool, NGX_OFF_T_LEN); if (v->data == NULL) { return NGX_ERROR; } v->len = ngx_sprintf(v->data, "%O", ctx->internal_body_length) - v->data; return NGX_OK; } static ngx_int_t ngx_http_proxy_internal_chunked_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 || !ctx->internal_chunked) { v->not_found = 1; return NGX_OK; } v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = (u_char *) "chunked"; v->len = sizeof("chunked") - 1; 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) { size_t len; ngx_int_t rc; ngx_uint_t i; ngx_http_proxy_rewrite_t *pr; ngx_http_proxy_loc_conf_t *plcf; plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module); pr = plcf->redirects->elts; if (pr == NULL) { return NGX_DECLINED; } len = h->value.len - prefix; for (i = 0; i < plcf->redirects->nelts; i++) { rc = pr[i].handler(r, h, prefix, len, &pr[i]); if (rc != NGX_DECLINED) { return rc; } } return NGX_DECLINED; } static ngx_int_t ngx_http_proxy_rewrite_cookie(ngx_http_request_t *r, ngx_table_elt_t *h) { size_t prefix; u_char *p; ngx_int_t rc, rv; ngx_http_proxy_loc_conf_t *plcf; p = (u_char *) ngx_strchr(h->value.data, ';'); if (p == NULL) { return NGX_DECLINED; } prefix = p + 1 - h->value.data; rv = NGX_DECLINED; plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module); if (plcf->cookie_domains) { p = ngx_strcasestrn(h->value.data + prefix, "domain=", 7 - 1); if (p) { rc = ngx_http_proxy_rewrite_cookie_value(r, h, p + 7, plcf->cookie_domains); if (rc == NGX_ERROR) { return NGX_ERROR; } if (rc != NGX_DECLINED) { rv = rc; } } } if (plcf->cookie_paths) { p = ngx_strcasestrn(h->value.data + prefix, "path=", 5 - 1); if (p) { rc = ngx_http_proxy_rewrite_cookie_value(r, h, p + 5, plcf->cookie_paths); if (rc == NGX_ERROR) { return NGX_ERROR; } if (rc != NGX_DECLINED) { rv = rc; } } } return rv; } static ngx_int_t ngx_http_proxy_rewrite_cookie_value(ngx_http_request_t *r, ngx_table_elt_t *h, u_char *value, ngx_array_t *rewrites) { size_t len, prefix; u_char *p; ngx_int_t rc; ngx_uint_t i; ngx_http_proxy_rewrite_t *pr; prefix = value - h->value.data; p = (u_char *) ngx_strchr(value, ';'); len = p ? (size_t) (p - value) : (h->value.len - prefix); pr = rewrites->elts; for (i = 0; i < rewrites->nelts; i++) { rc = pr[i].handler(r, h, prefix, len, &pr[i]); if (rc != NGX_DECLINED) { return rc; } } return NGX_DECLINED; } static ngx_int_t ngx_http_proxy_rewrite_complex_handler(ngx_http_request_t *r, ngx_table_elt_t *h, size_t prefix, size_t len, ngx_http_proxy_rewrite_t *pr) { ngx_str_t pattern, replacement; if (ngx_http_complex_value(r, &pr->pattern.complex, &pattern) != NGX_OK) { return NGX_ERROR; } if (pattern.len > len || ngx_rstrncmp(h->value.data + prefix, pattern.data, pattern.len) != 0) { return NGX_DECLINED; } if (ngx_http_complex_value(r, &pr->replacement, &replacement) != NGX_OK) { return NGX_ERROR; } return ngx_http_proxy_rewrite(r, h, prefix, pattern.len, &replacement); } #if (NGX_PCRE) static ngx_int_t ngx_http_proxy_rewrite_regex_handler(ngx_http_request_t *r, ngx_table_elt_t *h, size_t prefix, size_t len, ngx_http_proxy_rewrite_t *pr) { ngx_str_t pattern, replacement; pattern.len = len; pattern.data = h->value.data + prefix; if (ngx_http_regex_exec(r, pr->pattern.regex, &pattern) != NGX_OK) { return NGX_DECLINED; } if (ngx_http_complex_value(r, &pr->replacement, &replacement) != NGX_OK) { return NGX_ERROR; } if (prefix == 0 && h->value.len == len) { h->value = replacement; return NGX_OK; } return ngx_http_proxy_rewrite(r, h, prefix, len, &replacement); } #endif static ngx_int_t ngx_http_proxy_rewrite_domain_handler(ngx_http_request_t *r, ngx_table_elt_t *h, size_t prefix, size_t len, ngx_http_proxy_rewrite_t *pr) { u_char *p; ngx_str_t pattern, replacement; if (ngx_http_complex_value(r, &pr->pattern.complex, &pattern) != NGX_OK) { return NGX_ERROR; } p = h->value.data + prefix; if (p[0] == '.') { p++; prefix++; len--; } if (pattern.len != len || ngx_rstrncasecmp(pattern.data, p, len) != 0) { return NGX_DECLINED; } if (ngx_http_complex_value(r, &pr->replacement, &replacement) != NGX_OK) { return NGX_ERROR; } return ngx_http_proxy_rewrite(r, h, prefix, len, &replacement); } static ngx_int_t ngx_http_proxy_rewrite(ngx_http_request_t *r, ngx_table_elt_t *h, size_t prefix, size_t len, ngx_str_t *replacement) { u_char *p, *data; size_t new_len; new_len = replacement->len + h->value.len - len; if (replacement->len > len) { data = ngx_pnalloc(r->pool, new_len + 1); if (data == NULL) { return NGX_ERROR; } p = ngx_copy(data, h->value.data, prefix); p = ngx_copy(p, replacement->data, replacement->len); ngx_memcpy(p, h->value.data + prefix + len, h->value.len - len - prefix + 1); h->value.data = data; } else { p = ngx_copy(h->value.data + prefix, replacement->data, replacement->len); ngx_memmove(p, h->value.data + prefix + len, h->value.len - len - prefix + 1); } h->value.len = new_len; 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_main_conf(ngx_conf_t *cf) { ngx_http_proxy_main_conf_t *conf; conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_proxy_main_conf_t)); if (conf == NULL) { return NULL; } #if (NGX_HTTP_CACHE) if (ngx_array_init(&conf->caches, cf->pool, 4, sizeof(ngx_http_file_cache_t *)) != NGX_OK) { return NULL; } #endif return conf; } 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_zone = NULL; * 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.store_lengths = NULL; * conf->upstream.store_values = NULL; * conf->upstream.ssl_name = NULL; * * conf->method = NULL; * conf->location = NULL; * conf->url = { 0, NULL }; * conf->headers_source = NULL; * conf->headers.lengths = NULL; * conf->headers.values = NULL; * conf->headers.hash = { NULL, 0 }; * conf->headers_cache.lengths = NULL; * conf->headers_cache.values = NULL; * conf->headers_cache.hash = { NULL, 0 }; * conf->body_lengths = NULL; * conf->body_values = NULL; * conf->body_source = { 0, NULL }; * conf->redirects = NULL; * conf->ssl = 0; * conf->ssl_protocols = 0; * conf->ssl_ciphers = { 0, NULL }; * conf->ssl_trusted_certificate = { 0, NULL }; * conf->ssl_crl = { 0, NULL }; * conf->ssl_certificate = { 0, NULL }; * conf->ssl_certificate_key = { 0, NULL }; */ conf->upstream.store = NGX_CONF_UNSET; conf->upstream.store_access = NGX_CONF_UNSET_UINT; conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT; conf->upstream.buffering = NGX_CONF_UNSET; conf->upstream.request_buffering = NGX_CONF_UNSET; conf->upstream.ignore_client_abort = NGX_CONF_UNSET; conf->upstream.force_ranges = NGX_CONF_UNSET; conf->upstream.local = NGX_CONF_UNSET_PTR; conf->upstream.socket_keepalive = 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.next_upstream_timeout = NGX_CONF_UNSET_MSEC; conf->upstream.send_lowat = NGX_CONF_UNSET_SIZE; conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; conf->upstream.limit_rate = 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; conf->upstream.cache_min_uses = NGX_CONF_UNSET_UINT; conf->upstream.cache_max_range_offset = NGX_CONF_UNSET; conf->upstream.cache_bypass = NGX_CONF_UNSET_PTR; conf->upstream.no_cache = NGX_CONF_UNSET_PTR; conf->upstream.cache_valid = NGX_CONF_UNSET_PTR; conf->upstream.cache_lock = NGX_CONF_UNSET; conf->upstream.cache_lock_timeout = NGX_CONF_UNSET_MSEC; conf->upstream.cache_lock_age = NGX_CONF_UNSET_MSEC; conf->upstream.cache_revalidate = NGX_CONF_UNSET; conf->upstream.cache_convert_head = NGX_CONF_UNSET; conf->upstream.cache_background_update = NGX_CONF_UNSET; #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; conf->upstream.ssl_server_name = NGX_CONF_UNSET; conf->upstream.ssl_verify = NGX_CONF_UNSET; conf->ssl_verify_depth = NGX_CONF_UNSET_UINT; conf->ssl_passwords = NGX_CONF_UNSET_PTR; #endif /* "proxy_cyclic_temp_file" is disabled */ conf->upstream.cyclic_temp_file = 0; conf->redirect = NGX_CONF_UNSET; conf->upstream.change_buffering = 1; conf->cookie_domains = NGX_CONF_UNSET_PTR; conf->cookie_paths = NGX_CONF_UNSET_PTR; conf->http_version = NGX_CONF_UNSET_UINT; conf->headers_hash_max_size = NGX_CONF_UNSET_UINT; conf->headers_hash_bucket_size = NGX_CONF_UNSET_UINT; ngx_str_set(&conf->upstream.module, "proxy"); 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; u_char *p; size_t size; ngx_int_t rc; ngx_hash_init_t hash; ngx_http_core_loc_conf_t *clcf; ngx_http_proxy_rewrite_t *pr; ngx_http_script_compile_t sc; #if (NGX_HTTP_CACHE) if (conf->upstream.store > 0) { conf->upstream.cache = 0; } if (conf->upstream.cache > 0) { conf->upstream.store = 0; } #endif if (conf->upstream.store == NGX_CONF_UNSET) { ngx_conf_merge_value(conf->upstream.store, prev->upstream.store, 0); 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_uint_value(conf->upstream.next_upstream_tries, prev->upstream.next_upstream_tries, 0); ngx_conf_merge_value(conf->upstream.buffering, prev->upstream.buffering, 1); ngx_conf_merge_value(conf->upstream.request_buffering, prev->upstream.request_buffering, 1); ngx_conf_merge_value(conf->upstream.ignore_client_abort, prev->upstream.ignore_client_abort, 0); ngx_conf_merge_value(conf->upstream.force_ranges, prev->upstream.force_ranges, 0); ngx_conf_merge_ptr_value(conf->upstream.local, prev->upstream.local, NULL); ngx_conf_merge_value(conf->upstream.socket_keepalive, prev->upstream.socket_keepalive, 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_msec_value(conf->upstream.next_upstream_timeout, prev->upstream.next_upstream_timeout, 0); 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_size_value(conf->upstream.limit_rate, prev->upstream.limit_rate, 0); 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 to or greater than " "the 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 to or greater " "than the 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 " "temporary files usage or must be equal to or greater than " "the 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) if (conf->upstream.cache == NGX_CONF_UNSET) { ngx_conf_merge_value(conf->upstream.cache, prev->upstream.cache, 0); conf->upstream.cache_zone = prev->upstream.cache_zone; conf->upstream.cache_value = prev->upstream.cache_value; } if (conf->upstream.cache_zone && conf->upstream.cache_zone->data == NULL) { ngx_shm_zone_t *shm_zone; shm_zone = conf->upstream.cache_zone; 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_off_value(conf->upstream.cache_max_range_offset, prev->upstream.cache_max_range_offset, NGX_MAX_OFF_T_VALUE); 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_use_stale & NGX_HTTP_UPSTREAM_FT_OFF) { conf->upstream.cache_use_stale = NGX_CONF_BITMASK_SET |NGX_HTTP_UPSTREAM_FT_OFF; } if (conf->upstream.cache_use_stale & NGX_HTTP_UPSTREAM_FT_ERROR) { conf->upstream.cache_use_stale |= NGX_HTTP_UPSTREAM_FT_NOLIVE; } if (conf->upstream.cache_methods == 0) { conf->upstream.cache_methods = prev->upstream.cache_methods; } conf->upstream.cache_methods |= NGX_HTTP_GET|NGX_HTTP_HEAD; ngx_conf_merge_ptr_value(conf->upstream.cache_bypass, prev->upstream.cache_bypass, NULL); ngx_conf_merge_ptr_value(conf->upstream.no_cache, prev->upstream.no_cache, NULL); 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; } ngx_conf_merge_value(conf->upstream.cache_lock, prev->upstream.cache_lock, 0); ngx_conf_merge_msec_value(conf->upstream.cache_lock_timeout, prev->upstream.cache_lock_timeout, 5000); ngx_conf_merge_msec_value(conf->upstream.cache_lock_age, prev->upstream.cache_lock_age, 5000); ngx_conf_merge_value(conf->upstream.cache_revalidate, prev->upstream.cache_revalidate, 0); ngx_conf_merge_value(conf->upstream.cache_convert_head, prev->upstream.cache_convert_head, 1); ngx_conf_merge_value(conf->upstream.cache_background_update, prev->upstream.cache_background_update, 0); #endif if (conf->method == NULL) { conf->method = prev->method; } 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); ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols, (NGX_CONF_BITMASK_SET|NGX_SSL_TLSv1 |NGX_SSL_TLSv1_1|NGX_SSL_TLSv1_2)); ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers, "DEFAULT"); if (conf->upstream.ssl_name == NULL) { conf->upstream.ssl_name = prev->upstream.ssl_name; } ngx_conf_merge_value(conf->upstream.ssl_server_name, prev->upstream.ssl_server_name, 0); ngx_conf_merge_value(conf->upstream.ssl_verify, prev->upstream.ssl_verify, 0); ngx_conf_merge_uint_value(conf->ssl_verify_depth, prev->ssl_verify_depth, 1); ngx_conf_merge_str_value(conf->ssl_trusted_certificate, prev->ssl_trusted_certificate, ""); ngx_conf_merge_str_value(conf->ssl_crl, prev->ssl_crl, ""); ngx_conf_merge_str_value(conf->ssl_certificate, prev->ssl_certificate, ""); ngx_conf_merge_str_value(conf->ssl_certificate_key, prev->ssl_certificate_key, ""); ngx_conf_merge_ptr_value(conf->ssl_passwords, prev->ssl_passwords, NULL); if (conf->ssl && ngx_http_proxy_set_ssl(cf, conf) != NGX_OK) { return NGX_CONF_ERROR; } #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_rewrite_t)); if (conf->redirects == NULL) { return NGX_CONF_ERROR; } pr = ngx_array_push(conf->redirects); if (pr == NULL) { return NGX_CONF_ERROR; } ngx_memzero(&pr->pattern.complex, sizeof(ngx_http_complex_value_t)); ngx_memzero(&pr->replacement, sizeof(ngx_http_complex_value_t)); pr->handler = ngx_http_proxy_rewrite_complex_handler; if (conf->vars.uri.len) { pr->pattern.complex.value = conf->url; pr->replacement.value = conf->location; } else { pr->pattern.complex.value.len = conf->url.len + sizeof("/") - 1; p = ngx_pnalloc(cf->pool, pr->pattern.complex.value.len); if (p == NULL) { return NGX_CONF_ERROR; } pr->pattern.complex.value.data = p; p = ngx_cpymem(p, conf->url.data, conf->url.len); *p = '/'; ngx_str_set(&pr->replacement.value, "/"); } } } ngx_conf_merge_ptr_value(conf->cookie_domains, prev->cookie_domains, NULL); ngx_conf_merge_ptr_value(conf->cookie_paths, prev->cookie_paths, NULL); ngx_conf_merge_uint_value(conf->http_version, prev->http_version, NGX_HTTP_VERSION_10); 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_upstream_hide_headers_hash(cf, &conf->upstream, &prev->upstream, ngx_http_proxy_hide_headers, &hash) != NGX_OK) { return NGX_CONF_ERROR; } clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); if (clcf->noname && conf->upstream.upstream == NULL && conf->proxy_lengths == NULL) { conf->upstream.upstream = prev->upstream.upstream; conf->location = prev->location; conf->vars = prev->vars; conf->proxy_lengths = prev->proxy_lengths; conf->proxy_values = prev->proxy_values; #if (NGX_HTTP_SSL) conf->upstream.ssl = prev->upstream.ssl; #endif } if (clcf->lmt_excpt && clcf->handler == NULL && (conf->upstream.upstream || conf->proxy_lengths)) { clcf->handler = ngx_http_proxy_handler; } if (conf->body_source.data == NULL) { conf->body_flushes = prev->body_flushes; conf->body_source = prev->body_source; conf->body_lengths = prev->body_lengths; conf->body_values = prev->body_values; } if (conf->body_source.data && conf->body_lengths == NULL) { ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); sc.cf = cf; sc.source = &conf->body_source; sc.flushes = &conf->body_flushes; sc.lengths = &conf->body_lengths; sc.values = &conf->body_values; 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 = prev->headers; #if (NGX_HTTP_CACHE) conf->headers_cache = prev->headers_cache; #endif conf->headers_source = prev->headers_source; } rc = ngx_http_proxy_init_headers(cf, conf, &conf->headers, ngx_http_proxy_headers); if (rc != NGX_OK) { return NGX_CONF_ERROR; } #if (NGX_HTTP_CACHE) if (conf->upstream.cache) { rc = ngx_http_proxy_init_headers(cf, conf, &conf->headers_cache, ngx_http_proxy_cache_headers); if (rc != NGX_OK) { return NGX_CONF_ERROR; } } #endif /* * special handling to preserve conf->headers in the "http" section * to inherit it to all servers */ if (prev->headers.hash.buckets == NULL && conf->headers_source == prev->headers_source) { prev->headers = conf->headers; #if (NGX_HTTP_CACHE) prev->headers_cache = conf->headers_cache; #endif } return NGX_CONF_OK; } static ngx_int_t ngx_http_proxy_init_headers(ngx_conf_t *cf, ngx_http_proxy_loc_conf_t *conf, ngx_http_proxy_headers_t *headers, ngx_keyval_t *default_headers) { u_char *p; size_t size; uintptr_t *code; ngx_uint_t i; ngx_array_t headers_names, headers_merged; 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 (headers->hash.buckets) { return NGX_OK; } if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t)) != NGX_OK) { return NGX_ERROR; } if (ngx_array_init(&headers_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t)) != NGX_OK) { return NGX_ERROR; } headers->lengths = ngx_array_create(cf->pool, 64, 1); if (headers->lengths == NULL) { return NGX_ERROR; } headers->values = ngx_array_create(cf->pool, 512, 1); if (headers->values == NULL) { return NGX_ERROR; } if (conf->headers_source) { src = conf->headers_source->elts; for (i = 0; i < conf->headers_source->nelts; i++) { s = ngx_array_push(&headers_merged); if (s == NULL) { return NGX_ERROR; } *s = src[i]; } } h = default_headers; while (h->key.len) { src = headers_merged.elts; for (i = 0; i < headers_merged.nelts; i++) { if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) { goto next; } } s = ngx_array_push(&headers_merged); if (s == NULL) { return NGX_ERROR; } *s = *h; next: h++; } src = headers_merged.elts; for (i = 0; i < headers_merged.nelts; i++) { hk = ngx_array_push(&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; } copy = ngx_array_push_n(headers->lengths, sizeof(ngx_http_script_copy_code_t)); if (copy == NULL) { return NGX_ERROR; } copy->code = (ngx_http_script_code_pt) (void *) ngx_http_script_copy_len_code; copy->len = src[i].key.len; size = (sizeof(ngx_http_script_copy_code_t) + src[i].key.len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1); copy = ngx_array_push_n(headers->values, size); if (copy == NULL) { return NGX_ERROR; } copy->code = ngx_http_script_copy_code; copy->len = src[i].key.len; p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); ngx_memcpy(p, src[i].key.data, src[i].key.len); ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); sc.cf = cf; sc.source = &src[i].value; sc.flushes = &headers->flushes; sc.lengths = &headers->lengths; sc.values = &headers->values; if (ngx_http_script_compile(&sc) != NGX_OK) { return NGX_ERROR; } code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); if (code == NULL) { return NGX_ERROR; } *code = (uintptr_t) NULL; code = ngx_array_push_n(headers->values, sizeof(uintptr_t)); if (code == NULL) { return NGX_ERROR; } *code = (uintptr_t) NULL; } code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); if (code == NULL) { return NGX_ERROR; } *code = (uintptr_t) NULL; hash.hash = &headers->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; return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts); } 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.len && 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) plcf->ssl = 1; #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) plcf->ssl = 1; 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\" cannot have URI part in " "location given by regular expression, " "or inside named location, " "or inside \"if\" statement, " "or inside \"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; u_char *p; ngx_str_t *value; ngx_http_proxy_rewrite_t *pr; ngx_http_compile_complex_value_t ccv; if (plcf->redirect == 0) { return NGX_CONF_OK; } plcf->redirect = 1; 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_rewrite_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->proxy_lengths) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"proxy_redirect default\" cannot be used " "with \"proxy_pass\" directive with variables"); return NGX_CONF_ERROR; } if (plcf->url.data == NULL) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"proxy_redirect default\" should be placed " "after the \"proxy_pass\" directive"); return NGX_CONF_ERROR; } pr->handler = ngx_http_proxy_rewrite_complex_handler; ngx_memzero(&pr->pattern.complex, sizeof(ngx_http_complex_value_t)); ngx_memzero(&pr->replacement, sizeof(ngx_http_complex_value_t)); if (plcf->vars.uri.len) { pr->pattern.complex.value = plcf->url; pr->replacement.value = plcf->location; } else { pr->pattern.complex.value.len = plcf->url.len + sizeof("/") - 1; p = ngx_pnalloc(cf->pool, pr->pattern.complex.value.len); if (p == NULL) { return NGX_CONF_ERROR; } pr->pattern.complex.value.data = p; p = ngx_cpymem(p, plcf->url.data, plcf->url.len); *p = '/'; ngx_str_set(&pr->replacement.value, "/"); } return NGX_CONF_OK; } if (value[1].data[0] == '~') { value[1].len--; value[1].data++; if (value[1].data[0] == '*') { value[1].len--; value[1].data++; if (ngx_http_proxy_rewrite_regex(cf, pr, &value[1], 1) != NGX_OK) { return NGX_CONF_ERROR; } } else { if (ngx_http_proxy_rewrite_regex(cf, pr, &value[1], 0) != NGX_OK) { return NGX_CONF_ERROR; } } } else { ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[1]; ccv.complex_value = &pr->pattern.complex; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } pr->handler = ngx_http_proxy_rewrite_complex_handler; } ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[2]; ccv.complex_value = &pr->replacement; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; } static char * ngx_http_proxy_cookie_domain(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_proxy_loc_conf_t *plcf = conf; ngx_str_t *value; ngx_http_proxy_rewrite_t *pr; ngx_http_compile_complex_value_t ccv; if (plcf->cookie_domains == NULL) { return NGX_CONF_OK; } value = cf->args->elts; if (cf->args->nelts == 2) { if (ngx_strcmp(value[1].data, "off") == 0) { plcf->cookie_domains = NULL; return NGX_CONF_OK; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", &value[1]); return NGX_CONF_ERROR; } if (plcf->cookie_domains == NGX_CONF_UNSET_PTR) { plcf->cookie_domains = ngx_array_create(cf->pool, 1, sizeof(ngx_http_proxy_rewrite_t)); if (plcf->cookie_domains == NULL) { return NGX_CONF_ERROR; } } pr = ngx_array_push(plcf->cookie_domains); if (pr == NULL) { return NGX_CONF_ERROR; } if (value[1].data[0] == '~') { value[1].len--; value[1].data++; if (ngx_http_proxy_rewrite_regex(cf, pr, &value[1], 1) != NGX_OK) { return NGX_CONF_ERROR; } } else { if (value[1].data[0] == '.') { value[1].len--; value[1].data++; } ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[1]; ccv.complex_value = &pr->pattern.complex; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } pr->handler = ngx_http_proxy_rewrite_domain_handler; if (value[2].data[0] == '.') { value[2].len--; value[2].data++; } } ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[2]; ccv.complex_value = &pr->replacement; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; } static char * ngx_http_proxy_cookie_path(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_proxy_loc_conf_t *plcf = conf; ngx_str_t *value; ngx_http_proxy_rewrite_t *pr; ngx_http_compile_complex_value_t ccv; if (plcf->cookie_paths == NULL) { return NGX_CONF_OK; } value = cf->args->elts; if (cf->args->nelts == 2) { if (ngx_strcmp(value[1].data, "off") == 0) { plcf->cookie_paths = NULL; return NGX_CONF_OK; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", &value[1]); return NGX_CONF_ERROR; } if (plcf->cookie_paths == NGX_CONF_UNSET_PTR) { plcf->cookie_paths = ngx_array_create(cf->pool, 1, sizeof(ngx_http_proxy_rewrite_t)); if (plcf->cookie_paths == NULL) { return NGX_CONF_ERROR; } } pr = ngx_array_push(plcf->cookie_paths); if (pr == NULL) { return NGX_CONF_ERROR; } if (value[1].data[0] == '~') { value[1].len--; value[1].data++; if (value[1].data[0] == '*') { value[1].len--; value[1].data++; if (ngx_http_proxy_rewrite_regex(cf, pr, &value[1], 1) != NGX_OK) { return NGX_CONF_ERROR; } } else { if (ngx_http_proxy_rewrite_regex(cf, pr, &value[1], 0) != NGX_OK) { return NGX_CONF_ERROR; } } } else { ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[1]; ccv.complex_value = &pr->pattern.complex; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } pr->handler = ngx_http_proxy_rewrite_complex_handler; } ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[2]; ccv.complex_value = &pr->replacement; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; } static ngx_int_t ngx_http_proxy_rewrite_regex(ngx_conf_t *cf, ngx_http_proxy_rewrite_t *pr, ngx_str_t *regex, ngx_uint_t caseless) { #if (NGX_PCRE) u_char errstr[NGX_MAX_CONF_ERRSTR]; ngx_regex_compile_t rc; ngx_memzero(&rc, sizeof(ngx_regex_compile_t)); rc.pattern = *regex; rc.err.len = NGX_MAX_CONF_ERRSTR; rc.err.data = errstr; if (caseless) { rc.options = NGX_REGEX_CASELESS; } pr->pattern.regex = ngx_http_regex_compile(cf, &rc); if (pr->pattern.regex == NULL) { return NGX_ERROR; } pr->handler = ngx_http_proxy_rewrite_regex_handler; return NGX_OK; #else ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "using regex \"%V\" requires PCRE library", regex); return NGX_ERROR; #endif } 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) { 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 > 0) { return "is incompatible with \"proxy_cache\""; } #endif plcf->upstream.store = 1; if (ngx_strcmp(value[1].data, "on") == 0) { 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; ngx_http_complex_value_t cv; ngx_http_compile_complex_value_t ccv; value = cf->args->elts; if (plcf->upstream.cache != NGX_CONF_UNSET) { return "is duplicate"; } if (ngx_strcmp(value[1].data, "off") == 0) { plcf->upstream.cache = 0; return NGX_CONF_OK; } if (plcf->upstream.store > 0) { return "is incompatible with \"proxy_store\""; } plcf->upstream.cache = 1; ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[1]; ccv.complex_value = &cv; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } if (cv.lengths != NULL) { plcf->upstream.cache_value = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t)); if (plcf->upstream.cache_value == NULL) { return NGX_CONF_ERROR; } *plcf->upstream.cache_value = cv; return NGX_CONF_OK; } plcf->upstream.cache_zone = ngx_shared_memory_add(cf, &value[1], 0, &ngx_http_proxy_module); if (plcf->upstream.cache_zone == 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.data) { 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 #if (NGX_HTTP_SSL) static char * ngx_http_proxy_ssl_password_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_proxy_loc_conf_t *plcf = conf; ngx_str_t *value; if (plcf->ssl_passwords != NGX_CONF_UNSET_PTR) { return "is duplicate"; } value = cf->args->elts; plcf->ssl_passwords = ngx_ssl_read_password_file(cf, &value[1]); if (plcf->ssl_passwords == NULL) { 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; } #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, plcf->ssl_protocols, NULL) != NGX_OK) { return NGX_ERROR; } cln = ngx_pool_cleanup_add(cf->pool, 0); if (cln == NULL) { ngx_ssl_cleanup_ctx(plcf->upstream.ssl); return NGX_ERROR; } cln->handler = ngx_ssl_cleanup_ctx; cln->data = plcf->upstream.ssl; if (plcf->ssl_certificate.len) { if (plcf->ssl_certificate_key.len == 0) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "no \"proxy_ssl_certificate_key\" is defined " "for certificate \"%V\"", &plcf->ssl_certificate); return NGX_ERROR; } if (ngx_ssl_certificate(cf, plcf->upstream.ssl, &plcf->ssl_certificate, &plcf->ssl_certificate_key, plcf->ssl_passwords) != NGX_OK) { return NGX_ERROR; } } if (ngx_ssl_ciphers(cf, plcf->upstream.ssl, &plcf->ssl_ciphers, 0) != NGX_OK) { return NGX_ERROR; } if (plcf->upstream.ssl_verify) { if (plcf->ssl_trusted_certificate.len == 0) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "no proxy_ssl_trusted_certificate for proxy_ssl_verify"); return NGX_ERROR; } if (ngx_ssl_trusted_certificate(cf, plcf->upstream.ssl, &plcf->ssl_trusted_certificate, plcf->ssl_verify_depth) != NGX_OK) { return NGX_ERROR; } if (ngx_ssl_crl(cf, plcf->upstream.ssl, &plcf->ssl_crl) != NGX_OK) { return NGX_ERROR; } } if (ngx_ssl_client_session_cache(cf, plcf->upstream.ssl, plcf->upstream.ssl_session_reuse) != NGX_OK) { return NGX_ERROR; } 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) { ngx_str_set(&v->port, "80"); } else { ngx_str_set(&v->port, "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 { ngx_str_set(&v->host_header, "localhost"); ngx_str_null(&v->port); v->key_start.len += sizeof("unix:") - 1 + u->host.len + 1; } v->uri = u->uri; }