diff options
Diffstat (limited to 'app/nginx/src/http/ngx_http_core_module.c')
| -rw-r--r-- | app/nginx/src/http/ngx_http_core_module.c | 5359 |
1 files changed, 5359 insertions, 0 deletions
diff --git a/app/nginx/src/http/ngx_http_core_module.c b/app/nginx/src/http/ngx_http_core_module.c new file mode 100644 index 0000000..292671d --- /dev/null +++ b/app/nginx/src/http/ngx_http_core_module.c @@ -0,0 +1,5359 @@ + +/* + * Copyright (C) Igor Sysoev + * Copyright (C) Nginx, Inc. + */ + + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_http.h> + + +typedef struct { + u_char *name; + uint32_t method; +} ngx_http_method_name_t; + + +#define NGX_HTTP_REQUEST_BODY_FILE_OFF 0 +#define NGX_HTTP_REQUEST_BODY_FILE_ON 1 +#define NGX_HTTP_REQUEST_BODY_FILE_CLEAN 2 + + +static ngx_int_t ngx_http_core_find_location(ngx_http_request_t *r); +static ngx_int_t ngx_http_core_find_static_location(ngx_http_request_t *r, + ngx_http_location_tree_node_t *node); + +static ngx_int_t ngx_http_core_preconfiguration(ngx_conf_t *cf); +static ngx_int_t ngx_http_core_postconfiguration(ngx_conf_t *cf); +static void *ngx_http_core_create_main_conf(ngx_conf_t *cf); +static char *ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf); +static void *ngx_http_core_create_srv_conf(ngx_conf_t *cf); +static char *ngx_http_core_merge_srv_conf(ngx_conf_t *cf, + void *parent, void *child); +static void *ngx_http_core_create_loc_conf(ngx_conf_t *cf); +static char *ngx_http_core_merge_loc_conf(ngx_conf_t *cf, + void *parent, void *child); + +static char *ngx_http_core_server(ngx_conf_t *cf, ngx_command_t *cmd, + void *dummy); +static char *ngx_http_core_location(ngx_conf_t *cf, ngx_command_t *cmd, + void *dummy); +static ngx_int_t ngx_http_core_regex_location(ngx_conf_t *cf, + ngx_http_core_loc_conf_t *clcf, ngx_str_t *regex, ngx_uint_t caseless); + +static char *ngx_http_core_types(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_core_type(ngx_conf_t *cf, ngx_command_t *dummy, + void *conf); + +static char *ngx_http_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_core_server_name(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_core_root(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); +static char *ngx_http_core_limit_except(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_core_set_aio(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_core_directio(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_core_error_page(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_core_try_files(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_core_open_file_cache(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_core_error_log(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_core_keepalive(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_core_internal(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_core_resolver(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +#if (NGX_HTTP_GZIP) +static ngx_int_t ngx_http_gzip_accept_encoding(ngx_str_t *ae); +static ngx_uint_t ngx_http_gzip_quantity(u_char *p, u_char *last); +static char *ngx_http_gzip_disable(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +#endif +static ngx_int_t ngx_http_get_forwarded_addr_internal(ngx_http_request_t *r, + ngx_addr_t *addr, u_char *xff, size_t xfflen, ngx_array_t *proxies, + int recursive); +#if (NGX_HAVE_OPENAT) +static char *ngx_http_disable_symlinks(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +#endif + +static char *ngx_http_core_lowat_check(ngx_conf_t *cf, void *post, void *data); +static char *ngx_http_core_pool_size(ngx_conf_t *cf, void *post, void *data); + +static ngx_conf_post_t ngx_http_core_lowat_post = + { ngx_http_core_lowat_check }; + +static ngx_conf_post_handler_pt ngx_http_core_pool_size_p = + ngx_http_core_pool_size; + + +static ngx_conf_enum_t ngx_http_core_request_body_in_file[] = { + { ngx_string("off"), NGX_HTTP_REQUEST_BODY_FILE_OFF }, + { ngx_string("on"), NGX_HTTP_REQUEST_BODY_FILE_ON }, + { ngx_string("clean"), NGX_HTTP_REQUEST_BODY_FILE_CLEAN }, + { ngx_null_string, 0 } +}; + + +static ngx_conf_enum_t ngx_http_core_satisfy[] = { + { ngx_string("all"), NGX_HTTP_SATISFY_ALL }, + { ngx_string("any"), NGX_HTTP_SATISFY_ANY }, + { ngx_null_string, 0 } +}; + + +static ngx_conf_enum_t ngx_http_core_lingering_close[] = { + { ngx_string("off"), NGX_HTTP_LINGERING_OFF }, + { ngx_string("on"), NGX_HTTP_LINGERING_ON }, + { ngx_string("always"), NGX_HTTP_LINGERING_ALWAYS }, + { ngx_null_string, 0 } +}; + + +static ngx_conf_enum_t ngx_http_core_server_tokens[] = { + { ngx_string("off"), NGX_HTTP_SERVER_TOKENS_OFF }, + { ngx_string("on"), NGX_HTTP_SERVER_TOKENS_ON }, + { ngx_string("build"), NGX_HTTP_SERVER_TOKENS_BUILD }, + { ngx_null_string, 0 } +}; + + +static ngx_conf_enum_t ngx_http_core_if_modified_since[] = { + { ngx_string("off"), NGX_HTTP_IMS_OFF }, + { ngx_string("exact"), NGX_HTTP_IMS_EXACT }, + { ngx_string("before"), NGX_HTTP_IMS_BEFORE }, + { ngx_null_string, 0 } +}; + + +static ngx_conf_bitmask_t ngx_http_core_keepalive_disable[] = { + { ngx_string("none"), NGX_HTTP_KEEPALIVE_DISABLE_NONE }, + { ngx_string("msie6"), NGX_HTTP_KEEPALIVE_DISABLE_MSIE6 }, + { ngx_string("safari"), NGX_HTTP_KEEPALIVE_DISABLE_SAFARI }, + { ngx_null_string, 0 } +}; + + +static ngx_path_init_t ngx_http_client_temp_path = { + ngx_string(NGX_HTTP_CLIENT_TEMP_PATH), { 0, 0, 0 } +}; + + +#if (NGX_HTTP_GZIP) + +static ngx_conf_enum_t ngx_http_gzip_http_version[] = { + { ngx_string("1.0"), NGX_HTTP_VERSION_10 }, + { ngx_string("1.1"), NGX_HTTP_VERSION_11 }, + { ngx_null_string, 0 } +}; + + +static ngx_conf_bitmask_t ngx_http_gzip_proxied_mask[] = { + { ngx_string("off"), NGX_HTTP_GZIP_PROXIED_OFF }, + { ngx_string("expired"), NGX_HTTP_GZIP_PROXIED_EXPIRED }, + { ngx_string("no-cache"), NGX_HTTP_GZIP_PROXIED_NO_CACHE }, + { ngx_string("no-store"), NGX_HTTP_GZIP_PROXIED_NO_STORE }, + { ngx_string("private"), NGX_HTTP_GZIP_PROXIED_PRIVATE }, + { ngx_string("no_last_modified"), NGX_HTTP_GZIP_PROXIED_NO_LM }, + { ngx_string("no_etag"), NGX_HTTP_GZIP_PROXIED_NO_ETAG }, + { ngx_string("auth"), NGX_HTTP_GZIP_PROXIED_AUTH }, + { ngx_string("any"), NGX_HTTP_GZIP_PROXIED_ANY }, + { ngx_null_string, 0 } +}; + + +static ngx_str_t ngx_http_gzip_no_cache = ngx_string("no-cache"); +static ngx_str_t ngx_http_gzip_no_store = ngx_string("no-store"); +static ngx_str_t ngx_http_gzip_private = ngx_string("private"); + +#endif + + +static ngx_command_t ngx_http_core_commands[] = { + + { ngx_string("variables_hash_max_size"), + NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1, + ngx_conf_set_num_slot, + NGX_HTTP_MAIN_CONF_OFFSET, + offsetof(ngx_http_core_main_conf_t, variables_hash_max_size), + NULL }, + + { ngx_string("variables_hash_bucket_size"), + NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1, + ngx_conf_set_num_slot, + NGX_HTTP_MAIN_CONF_OFFSET, + offsetof(ngx_http_core_main_conf_t, variables_hash_bucket_size), + NULL }, + + { ngx_string("server_names_hash_max_size"), + NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1, + ngx_conf_set_num_slot, + NGX_HTTP_MAIN_CONF_OFFSET, + offsetof(ngx_http_core_main_conf_t, server_names_hash_max_size), + NULL }, + + { ngx_string("server_names_hash_bucket_size"), + NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1, + ngx_conf_set_num_slot, + NGX_HTTP_MAIN_CONF_OFFSET, + offsetof(ngx_http_core_main_conf_t, server_names_hash_bucket_size), + NULL }, + + { ngx_string("server"), + NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, + ngx_http_core_server, + 0, + 0, + NULL }, + + { ngx_string("connection_pool_size"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_size_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_core_srv_conf_t, connection_pool_size), + &ngx_http_core_pool_size_p }, + + { ngx_string("request_pool_size"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_size_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_core_srv_conf_t, request_pool_size), + &ngx_http_core_pool_size_p }, + + { ngx_string("client_header_timeout"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_msec_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_core_srv_conf_t, client_header_timeout), + NULL }, + + { ngx_string("client_header_buffer_size"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_size_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_core_srv_conf_t, client_header_buffer_size), + NULL }, + + { ngx_string("large_client_header_buffers"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE2, + ngx_conf_set_bufs_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_core_srv_conf_t, large_client_header_buffers), + NULL }, + + { ngx_string("ignore_invalid_headers"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, + ngx_conf_set_flag_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_core_srv_conf_t, ignore_invalid_headers), + NULL }, + + { ngx_string("merge_slashes"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, + ngx_conf_set_flag_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_core_srv_conf_t, merge_slashes), + NULL }, + + { ngx_string("underscores_in_headers"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, + ngx_conf_set_flag_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_core_srv_conf_t, underscores_in_headers), + NULL }, + + { ngx_string("location"), + NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE12, + ngx_http_core_location, + NGX_HTTP_SRV_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("listen"), + NGX_HTTP_SRV_CONF|NGX_CONF_1MORE, + ngx_http_core_listen, + NGX_HTTP_SRV_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("server_name"), + NGX_HTTP_SRV_CONF|NGX_CONF_1MORE, + ngx_http_core_server_name, + NGX_HTTP_SRV_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("types_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_core_loc_conf_t, types_hash_max_size), + NULL }, + + { ngx_string("types_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_core_loc_conf_t, types_hash_bucket_size), + NULL }, + + { ngx_string("types"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF + |NGX_CONF_BLOCK|NGX_CONF_NOARGS, + ngx_http_core_types, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("default_type"), + 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_core_loc_conf_t, default_type), + NULL }, + + { ngx_string("root"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF + |NGX_CONF_TAKE1, + ngx_http_core_root, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("alias"), + NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, + ngx_http_core_root, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("limit_except"), + NGX_HTTP_LOC_CONF|NGX_CONF_BLOCK|NGX_CONF_1MORE, + ngx_http_core_limit_except, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("client_max_body_size"), + 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_core_loc_conf_t, client_max_body_size), + NULL }, + + { ngx_string("client_body_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_core_loc_conf_t, client_body_buffer_size), + NULL }, + + { ngx_string("client_body_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_core_loc_conf_t, client_body_timeout), + NULL }, + + { ngx_string("client_body_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_core_loc_conf_t, client_body_temp_path), + NULL }, + + { ngx_string("client_body_in_file_only"), + 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_core_loc_conf_t, client_body_in_file_only), + &ngx_http_core_request_body_in_file }, + + { ngx_string("client_body_in_single_buffer"), + 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_core_loc_conf_t, client_body_in_single_buffer), + NULL }, + + { ngx_string("sendfile"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF + |NGX_CONF_FLAG, + ngx_conf_set_flag_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_core_loc_conf_t, sendfile), + NULL }, + + { ngx_string("sendfile_max_chunk"), + 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_core_loc_conf_t, sendfile_max_chunk), + NULL }, + + { ngx_string("aio"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, + ngx_http_core_set_aio, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("aio_write"), + 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_core_loc_conf_t, aio_write), + NULL }, + + { ngx_string("read_ahead"), + 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_core_loc_conf_t, read_ahead), + NULL }, + + { ngx_string("directio"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, + ngx_http_core_directio, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("directio_alignment"), + 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_core_loc_conf_t, directio_alignment), + NULL }, + + { ngx_string("tcp_nopush"), + 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_core_loc_conf_t, tcp_nopush), + NULL }, + + { ngx_string("tcp_nodelay"), + 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_core_loc_conf_t, tcp_nodelay), + NULL }, + + { ngx_string("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_core_loc_conf_t, send_timeout), + NULL }, + + { ngx_string("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_core_loc_conf_t, send_lowat), + &ngx_http_core_lowat_post }, + + { ngx_string("postpone_output"), + 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_core_loc_conf_t, postpone_output), + NULL }, + + { ngx_string("limit_rate"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF + |NGX_CONF_TAKE1, + ngx_conf_set_size_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_core_loc_conf_t, limit_rate), + NULL }, + + { ngx_string("limit_rate_after"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF + |NGX_CONF_TAKE1, + ngx_conf_set_size_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_core_loc_conf_t, limit_rate_after), + NULL }, + + { ngx_string("keepalive_timeout"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, + ngx_http_core_keepalive, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("keepalive_requests"), + 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_core_loc_conf_t, keepalive_requests), + NULL }, + + { ngx_string("keepalive_disable"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, + ngx_conf_set_bitmask_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_core_loc_conf_t, keepalive_disable), + &ngx_http_core_keepalive_disable }, + + { ngx_string("satisfy"), + 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_core_loc_conf_t, satisfy), + &ngx_http_core_satisfy }, + + { ngx_string("internal"), + NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS, + ngx_http_core_internal, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("lingering_close"), + 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_core_loc_conf_t, lingering_close), + &ngx_http_core_lingering_close }, + + { ngx_string("lingering_time"), + 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_core_loc_conf_t, lingering_time), + NULL }, + + { ngx_string("lingering_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_core_loc_conf_t, lingering_timeout), + NULL }, + + { ngx_string("reset_timedout_connection"), + 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_core_loc_conf_t, reset_timedout_connection), + NULL }, + + { ngx_string("absolute_redirect"), + 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_core_loc_conf_t, absolute_redirect), + NULL }, + + { ngx_string("server_name_in_redirect"), + 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_core_loc_conf_t, server_name_in_redirect), + NULL }, + + { ngx_string("port_in_redirect"), + 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_core_loc_conf_t, port_in_redirect), + NULL }, + + { ngx_string("msie_padding"), + 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_core_loc_conf_t, msie_padding), + NULL }, + + { ngx_string("msie_refresh"), + 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_core_loc_conf_t, msie_refresh), + NULL }, + + { ngx_string("log_not_found"), + 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_core_loc_conf_t, log_not_found), + NULL }, + + { ngx_string("log_subrequest"), + 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_core_loc_conf_t, log_subrequest), + NULL }, + + { ngx_string("recursive_error_pages"), + 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_core_loc_conf_t, recursive_error_pages), + NULL }, + + { ngx_string("server_tokens"), + 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_core_loc_conf_t, server_tokens), + &ngx_http_core_server_tokens }, + + { ngx_string("if_modified_since"), + 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_core_loc_conf_t, if_modified_since), + &ngx_http_core_if_modified_since }, + + { ngx_string("max_ranges"), + 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_core_loc_conf_t, max_ranges), + NULL }, + + { ngx_string("chunked_transfer_encoding"), + 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_core_loc_conf_t, chunked_transfer_encoding), + NULL }, + + { ngx_string("etag"), + 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_core_loc_conf_t, etag), + NULL }, + + { ngx_string("error_page"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF + |NGX_CONF_2MORE, + ngx_http_core_error_page, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("try_files"), + NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_2MORE, + ngx_http_core_try_files, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("post_action"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF + |NGX_CONF_TAKE1, + ngx_conf_set_str_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_core_loc_conf_t, post_action), + NULL }, + + { ngx_string("error_log"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, + ngx_http_core_error_log, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("open_file_cache"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, + ngx_http_core_open_file_cache, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_core_loc_conf_t, open_file_cache), + NULL }, + + { ngx_string("open_file_cache_valid"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, + ngx_conf_set_sec_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_core_loc_conf_t, open_file_cache_valid), + NULL }, + + { ngx_string("open_file_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_core_loc_conf_t, open_file_cache_min_uses), + NULL }, + + { ngx_string("open_file_cache_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_core_loc_conf_t, open_file_cache_errors), + NULL }, + + { ngx_string("open_file_cache_events"), + 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_core_loc_conf_t, open_file_cache_events), + NULL }, + + { ngx_string("resolver"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, + ngx_http_core_resolver, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("resolver_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_core_loc_conf_t, resolver_timeout), + NULL }, + +#if (NGX_HTTP_GZIP) + + { ngx_string("gzip_vary"), + 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_core_loc_conf_t, gzip_vary), + NULL }, + + { ngx_string("gzip_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_core_loc_conf_t, gzip_http_version), + &ngx_http_gzip_http_version }, + + { ngx_string("gzip_proxied"), + 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_core_loc_conf_t, gzip_proxied), + &ngx_http_gzip_proxied_mask }, + + { ngx_string("gzip_disable"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, + ngx_http_gzip_disable, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + +#endif + +#if (NGX_HAVE_OPENAT) + + { ngx_string("disable_symlinks"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, + ngx_http_disable_symlinks, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + +#endif + + ngx_null_command +}; + + +static ngx_http_module_t ngx_http_core_module_ctx = { + ngx_http_core_preconfiguration, /* preconfiguration */ + ngx_http_core_postconfiguration, /* postconfiguration */ + + ngx_http_core_create_main_conf, /* create main configuration */ + ngx_http_core_init_main_conf, /* init main configuration */ + + ngx_http_core_create_srv_conf, /* create server configuration */ + ngx_http_core_merge_srv_conf, /* merge server configuration */ + + ngx_http_core_create_loc_conf, /* create location configuration */ + ngx_http_core_merge_loc_conf /* merge location configuration */ +}; + + +ngx_module_t ngx_http_core_module = { + NGX_MODULE_V1, + &ngx_http_core_module_ctx, /* module context */ + ngx_http_core_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 +}; + + +ngx_str_t ngx_http_core_get_method = { 3, (u_char *) "GET" }; + + +void +ngx_http_handler(ngx_http_request_t *r) +{ + ngx_http_core_main_conf_t *cmcf; + + r->connection->log->action = NULL; + + if (!r->internal) { + switch (r->headers_in.connection_type) { + case 0: + r->keepalive = (r->http_version > NGX_HTTP_VERSION_10); + break; + + case NGX_HTTP_CONNECTION_CLOSE: + r->keepalive = 0; + break; + + case NGX_HTTP_CONNECTION_KEEP_ALIVE: + r->keepalive = 1; + break; + } + + r->lingering_close = (r->headers_in.content_length_n > 0 + || r->headers_in.chunked); + r->phase_handler = 0; + + } else { + cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); + r->phase_handler = cmcf->phase_engine.server_rewrite_index; + } + + r->valid_location = 1; +#if (NGX_HTTP_GZIP) + r->gzip_tested = 0; + r->gzip_ok = 0; + r->gzip_vary = 0; +#endif + + r->write_event_handler = ngx_http_core_run_phases; + ngx_http_core_run_phases(r); +} + + +void +ngx_http_core_run_phases(ngx_http_request_t *r) +{ + ngx_int_t rc; + ngx_http_phase_handler_t *ph; + ngx_http_core_main_conf_t *cmcf; + + cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); + + ph = cmcf->phase_engine.handlers; + + while (ph[r->phase_handler].checker) { + + rc = ph[r->phase_handler].checker(r, &ph[r->phase_handler]); + + if (rc == NGX_OK) { + return; + } + } +} + + +ngx_int_t +ngx_http_core_generic_phase(ngx_http_request_t *r, ngx_http_phase_handler_t *ph) +{ + ngx_int_t rc; + + /* + * generic phase checker, + * used by the post read and pre-access phases + */ + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "generic phase: %ui", r->phase_handler); + + rc = ph->handler(r); + + if (rc == NGX_OK) { + r->phase_handler = ph->next; + return NGX_AGAIN; + } + + if (rc == NGX_DECLINED) { + r->phase_handler++; + return NGX_AGAIN; + } + + if (rc == NGX_AGAIN || rc == NGX_DONE) { + return NGX_OK; + } + + /* rc == NGX_ERROR || rc == NGX_HTTP_... */ + + ngx_http_finalize_request(r, rc); + + return NGX_OK; +} + + +ngx_int_t +ngx_http_core_rewrite_phase(ngx_http_request_t *r, ngx_http_phase_handler_t *ph) +{ + ngx_int_t rc; + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "rewrite phase: %ui", r->phase_handler); + + rc = ph->handler(r); + + if (rc == NGX_DECLINED) { + r->phase_handler++; + return NGX_AGAIN; + } + + if (rc == NGX_DONE) { + return NGX_OK; + } + + /* NGX_OK, NGX_AGAIN, NGX_ERROR, NGX_HTTP_... */ + + ngx_http_finalize_request(r, rc); + + return NGX_OK; +} + + +ngx_int_t +ngx_http_core_find_config_phase(ngx_http_request_t *r, + ngx_http_phase_handler_t *ph) +{ + u_char *p; + size_t len; + ngx_int_t rc; + ngx_http_core_loc_conf_t *clcf; + + r->content_handler = NULL; + r->uri_changed = 0; + + rc = ngx_http_core_find_location(r); + + if (rc == NGX_ERROR) { + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + return NGX_OK; + } + + clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); + + if (!r->internal && clcf->internal) { + ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND); + return NGX_OK; + } + + ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "using configuration \"%s%V\"", + (clcf->noname ? "*" : (clcf->exact_match ? "=" : "")), + &clcf->name); + + ngx_http_update_location_config(r); + + ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "http cl:%O max:%O", + r->headers_in.content_length_n, clcf->client_max_body_size); + + if (r->headers_in.content_length_n != -1 + && !r->discard_body + && clcf->client_max_body_size + && clcf->client_max_body_size < r->headers_in.content_length_n) + { + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "client intended to send too large body: %O bytes", + r->headers_in.content_length_n); + + r->expect_tested = 1; + (void) ngx_http_discard_request_body(r); + ngx_http_finalize_request(r, NGX_HTTP_REQUEST_ENTITY_TOO_LARGE); + return NGX_OK; + } + + if (rc == NGX_DONE) { + ngx_http_clear_location(r); + + r->headers_out.location = ngx_list_push(&r->headers_out.headers); + if (r->headers_out.location == NULL) { + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + return NGX_OK; + } + + r->headers_out.location->hash = 1; + ngx_str_set(&r->headers_out.location->key, "Location"); + + if (r->args.len == 0) { + r->headers_out.location->value = clcf->name; + + } else { + len = clcf->name.len + 1 + r->args.len; + p = ngx_pnalloc(r->pool, len); + + if (p == NULL) { + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + return NGX_OK; + } + + r->headers_out.location->value.len = len; + r->headers_out.location->value.data = p; + + p = ngx_cpymem(p, clcf->name.data, clcf->name.len); + *p++ = '?'; + ngx_memcpy(p, r->args.data, r->args.len); + } + + ngx_http_finalize_request(r, NGX_HTTP_MOVED_PERMANENTLY); + return NGX_OK; + } + + r->phase_handler++; + return NGX_AGAIN; +} + + +ngx_int_t +ngx_http_core_post_rewrite_phase(ngx_http_request_t *r, + ngx_http_phase_handler_t *ph) +{ + ngx_http_core_srv_conf_t *cscf; + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "post rewrite phase: %ui", r->phase_handler); + + if (!r->uri_changed) { + r->phase_handler++; + return NGX_AGAIN; + } + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "uri changes: %d", r->uri_changes); + + /* + * gcc before 3.3 compiles the broken code for + * if (r->uri_changes-- == 0) + * if the r->uri_changes is defined as + * unsigned uri_changes:4 + */ + + r->uri_changes--; + + if (r->uri_changes == 0) { + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "rewrite or internal redirection cycle " + "while processing \"%V\"", &r->uri); + + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + return NGX_OK; + } + + r->phase_handler = ph->next; + + cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module); + r->loc_conf = cscf->ctx->loc_conf; + + return NGX_AGAIN; +} + + +ngx_int_t +ngx_http_core_access_phase(ngx_http_request_t *r, ngx_http_phase_handler_t *ph) +{ + ngx_int_t rc; + ngx_http_core_loc_conf_t *clcf; + + if (r != r->main) { + r->phase_handler = ph->next; + return NGX_AGAIN; + } + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "access phase: %ui", r->phase_handler); + + rc = ph->handler(r); + + if (rc == NGX_DECLINED) { + r->phase_handler++; + return NGX_AGAIN; + } + + if (rc == NGX_AGAIN || rc == NGX_DONE) { + return NGX_OK; + } + + clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); + + if (clcf->satisfy == NGX_HTTP_SATISFY_ALL) { + + if (rc == NGX_OK) { + r->phase_handler++; + return NGX_AGAIN; + } + + } else { + if (rc == NGX_OK) { + r->access_code = 0; + + if (r->headers_out.www_authenticate) { + r->headers_out.www_authenticate->hash = 0; + } + + r->phase_handler = ph->next; + return NGX_AGAIN; + } + + if (rc == NGX_HTTP_FORBIDDEN || rc == NGX_HTTP_UNAUTHORIZED) { + if (r->access_code != NGX_HTTP_UNAUTHORIZED) { + r->access_code = rc; + } + + r->phase_handler++; + return NGX_AGAIN; + } + } + + /* rc == NGX_ERROR || rc == NGX_HTTP_... */ + + ngx_http_finalize_request(r, rc); + return NGX_OK; +} + + +ngx_int_t +ngx_http_core_post_access_phase(ngx_http_request_t *r, + ngx_http_phase_handler_t *ph) +{ + ngx_int_t access_code; + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "post access phase: %ui", r->phase_handler); + + access_code = r->access_code; + + if (access_code) { + if (access_code == NGX_HTTP_FORBIDDEN) { + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "access forbidden by rule"); + } + + r->access_code = 0; + ngx_http_finalize_request(r, access_code); + return NGX_OK; + } + + r->phase_handler++; + return NGX_AGAIN; +} + + +ngx_int_t +ngx_http_core_try_files_phase(ngx_http_request_t *r, + ngx_http_phase_handler_t *ph) +{ + size_t len, root, alias, reserve, allocated; + u_char *p, *name; + ngx_str_t path, args; + ngx_uint_t test_dir; + ngx_http_try_file_t *tf; + ngx_open_file_info_t of; + ngx_http_script_code_pt code; + ngx_http_script_engine_t e; + ngx_http_core_loc_conf_t *clcf; + ngx_http_script_len_code_pt lcode; + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "try files phase: %ui", r->phase_handler); + + clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); + + if (clcf->try_files == NULL) { + r->phase_handler++; + return NGX_AGAIN; + } + + allocated = 0; + root = 0; + name = NULL; + /* suppress MSVC warning */ + path.data = NULL; + + tf = clcf->try_files; + + alias = clcf->alias; + + for ( ;; ) { + + if (tf->lengths) { + ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); + + e.ip = tf->lengths->elts; + e.request = r; + + /* 1 is for terminating '\0' as in static names */ + len = 1; + + while (*(uintptr_t *) e.ip) { + lcode = *(ngx_http_script_len_code_pt *) e.ip; + len += lcode(&e); + } + + } else { + len = tf->name.len; + } + + if (!alias) { + reserve = len > r->uri.len ? len - r->uri.len : 0; + + } else if (alias == NGX_MAX_SIZE_T_VALUE) { + reserve = len; + + } else { + reserve = len > r->uri.len - alias ? len - (r->uri.len - alias) : 0; + } + + if (reserve > allocated || !allocated) { + + /* 16 bytes are preallocation */ + allocated = reserve + 16; + + if (ngx_http_map_uri_to_path(r, &path, &root, allocated) == NULL) { + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + return NGX_OK; + } + + name = path.data + root; + } + + if (tf->values == NULL) { + + /* tf->name.len includes the terminating '\0' */ + + ngx_memcpy(name, tf->name.data, tf->name.len); + + path.len = (name + tf->name.len - 1) - path.data; + + } else { + e.ip = tf->values->elts; + e.pos = name; + e.flushed = 1; + + while (*(uintptr_t *) e.ip) { + code = *(ngx_http_script_code_pt *) e.ip; + code((ngx_http_script_engine_t *) &e); + } + + path.len = e.pos - path.data; + + *e.pos = '\0'; + + if (alias && alias != NGX_MAX_SIZE_T_VALUE + && ngx_strncmp(name, r->uri.data, alias) == 0) + { + ngx_memmove(name, name + alias, len - alias); + path.len -= alias; + } + } + + test_dir = tf->test_dir; + + tf++; + + ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "trying to use %s: \"%s\" \"%s\"", + test_dir ? "dir" : "file", name, path.data); + + if (tf->lengths == NULL && tf->name.len == 0) { + + if (tf->code) { + ngx_http_finalize_request(r, tf->code); + return NGX_OK; + } + + path.len -= root; + path.data += root; + + if (path.data[0] == '@') { + (void) ngx_http_named_location(r, &path); + + } else { + ngx_http_split_args(r, &path, &args); + + (void) ngx_http_internal_redirect(r, &path, &args); + } + + ngx_http_finalize_request(r, NGX_DONE); + return NGX_OK; + } + + ngx_memzero(&of, sizeof(ngx_open_file_info_t)); + + of.read_ahead = clcf->read_ahead; + of.directio = clcf->directio; + of.valid = clcf->open_file_cache_valid; + of.min_uses = clcf->open_file_cache_min_uses; + of.test_only = 1; + of.errors = clcf->open_file_cache_errors; + of.events = clcf->open_file_cache_events; + + if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) { + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + return NGX_OK; + } + + if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool) + != NGX_OK) + { + if (of.err == 0) { + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + return NGX_OK; + } + + if (of.err != NGX_ENOENT + && of.err != NGX_ENOTDIR + && of.err != NGX_ENAMETOOLONG) + { + ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err, + "%s \"%s\" failed", of.failed, path.data); + } + + continue; + } + + if (of.is_dir != test_dir) { + continue; + } + + path.len -= root; + path.data += root; + + if (!alias) { + r->uri = path; + + } else if (alias == NGX_MAX_SIZE_T_VALUE) { + if (!test_dir) { + r->uri = path; + r->add_uri_to_alias = 1; + } + + } else { + name = r->uri.data; + + r->uri.len = alias + path.len; + r->uri.data = ngx_pnalloc(r->pool, r->uri.len); + if (r->uri.data == NULL) { + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + return NGX_OK; + } + + p = ngx_copy(r->uri.data, name, alias); + ngx_memcpy(p, path.data, path.len); + } + + ngx_http_set_exten(r); + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "try file uri: \"%V\"", &r->uri); + + r->phase_handler++; + return NGX_AGAIN; + } + + /* not reached */ +} + + +ngx_int_t +ngx_http_core_content_phase(ngx_http_request_t *r, + ngx_http_phase_handler_t *ph) +{ + size_t root; + ngx_int_t rc; + ngx_str_t path; + + if (r->content_handler) { + r->write_event_handler = ngx_http_request_empty_handler; + ngx_http_finalize_request(r, r->content_handler(r)); + return NGX_OK; + } + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "content phase: %ui", r->phase_handler); + + rc = ph->handler(r); + + if (rc != NGX_DECLINED) { + ngx_http_finalize_request(r, rc); + return NGX_OK; + } + + /* rc == NGX_DECLINED */ + + ph++; + + if (ph->checker) { + r->phase_handler++; + return NGX_AGAIN; + } + + /* no content handler was found */ + + if (r->uri.data[r->uri.len - 1] == '/') { + + if (ngx_http_map_uri_to_path(r, &path, &root, 0) != NULL) { + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "directory index of \"%s\" is forbidden", path.data); + } + + ngx_http_finalize_request(r, NGX_HTTP_FORBIDDEN); + return NGX_OK; + } + + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no handler found"); + + ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND); + return NGX_OK; +} + + +void +ngx_http_update_location_config(ngx_http_request_t *r) +{ + ngx_http_core_loc_conf_t *clcf; + + clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); + + if (r->method & clcf->limit_except) { + r->loc_conf = clcf->limit_except_loc_conf; + clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); + } + + if (r == r->main) { + ngx_set_connection_log(r->connection, clcf->error_log); + } + + if ((ngx_io.flags & NGX_IO_SENDFILE) && clcf->sendfile) { + r->connection->sendfile = 1; + + } else { + r->connection->sendfile = 0; + } + + if (clcf->client_body_in_file_only) { + r->request_body_in_file_only = 1; + r->request_body_in_persistent_file = 1; + r->request_body_in_clean_file = + clcf->client_body_in_file_only == NGX_HTTP_REQUEST_BODY_FILE_CLEAN; + r->request_body_file_log_level = NGX_LOG_NOTICE; + + } else { + r->request_body_file_log_level = NGX_LOG_WARN; + } + + r->request_body_in_single_buf = clcf->client_body_in_single_buffer; + + if (r->keepalive) { + if (clcf->keepalive_timeout == 0) { + r->keepalive = 0; + + } else if (r->connection->requests >= clcf->keepalive_requests) { + r->keepalive = 0; + + } else if (r->headers_in.msie6 + && r->method == NGX_HTTP_POST + && (clcf->keepalive_disable + & NGX_HTTP_KEEPALIVE_DISABLE_MSIE6)) + { + /* + * MSIE may wait for some time if an response for + * a POST request was sent over a keepalive connection + */ + r->keepalive = 0; + + } else if (r->headers_in.safari + && (clcf->keepalive_disable + & NGX_HTTP_KEEPALIVE_DISABLE_SAFARI)) + { + /* + * Safari may send a POST request to a closed keepalive + * connection and may stall for some time, see + * https://bugs.webkit.org/show_bug.cgi?id=5760 + */ + r->keepalive = 0; + } + } + + if (!clcf->tcp_nopush) { + /* disable TCP_NOPUSH/TCP_CORK use */ + r->connection->tcp_nopush = NGX_TCP_NOPUSH_DISABLED; + } + + if (r->limit_rate == 0) { + r->limit_rate = clcf->limit_rate; + } + + if (clcf->handler) { + r->content_handler = clcf->handler; + } +} + + +/* + * NGX_OK - exact or regex match + * NGX_DONE - auto redirect + * NGX_AGAIN - inclusive match + * NGX_ERROR - regex error + * NGX_DECLINED - no match + */ + +static ngx_int_t +ngx_http_core_find_location(ngx_http_request_t *r) +{ + ngx_int_t rc; + ngx_http_core_loc_conf_t *pclcf; +#if (NGX_PCRE) + ngx_int_t n; + ngx_uint_t noregex; + ngx_http_core_loc_conf_t *clcf, **clcfp; + + noregex = 0; +#endif + + pclcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); + + rc = ngx_http_core_find_static_location(r, pclcf->static_locations); + + if (rc == NGX_AGAIN) { + +#if (NGX_PCRE) + clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); + + noregex = clcf->noregex; +#endif + + /* look up nested locations */ + + rc = ngx_http_core_find_location(r); + } + + if (rc == NGX_OK || rc == NGX_DONE) { + return rc; + } + + /* rc == NGX_DECLINED or rc == NGX_AGAIN in nested location */ + +#if (NGX_PCRE) + + if (noregex == 0 && pclcf->regex_locations) { + + for (clcfp = pclcf->regex_locations; *clcfp; clcfp++) { + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "test location: ~ \"%V\"", &(*clcfp)->name); + + n = ngx_http_regex_exec(r, (*clcfp)->regex, &r->uri); + + if (n == NGX_OK) { + r->loc_conf = (*clcfp)->loc_conf; + + /* look up nested locations */ + + rc = ngx_http_core_find_location(r); + + return (rc == NGX_ERROR) ? rc : NGX_OK; + } + + if (n == NGX_DECLINED) { + continue; + } + + return NGX_ERROR; + } + } +#endif + + return rc; +} + + +/* + * NGX_OK - exact match + * NGX_DONE - auto redirect + * NGX_AGAIN - inclusive match + * NGX_DECLINED - no match + */ + +static ngx_int_t +ngx_http_core_find_static_location(ngx_http_request_t *r, + ngx_http_location_tree_node_t *node) +{ + u_char *uri; + size_t len, n; + ngx_int_t rc, rv; + + len = r->uri.len; + uri = r->uri.data; + + rv = NGX_DECLINED; + + for ( ;; ) { + + if (node == NULL) { + return rv; + } + + ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "test location: \"%*s\"", + (size_t) node->len, node->name); + + n = (len <= (size_t) node->len) ? len : node->len; + + rc = ngx_filename_cmp(uri, node->name, n); + + if (rc != 0) { + node = (rc < 0) ? node->left : node->right; + + continue; + } + + if (len > (size_t) node->len) { + + if (node->inclusive) { + + r->loc_conf = node->inclusive->loc_conf; + rv = NGX_AGAIN; + + node = node->tree; + uri += n; + len -= n; + + continue; + } + + /* exact only */ + + node = node->right; + + continue; + } + + if (len == (size_t) node->len) { + + if (node->exact) { + r->loc_conf = node->exact->loc_conf; + return NGX_OK; + + } else { + r->loc_conf = node->inclusive->loc_conf; + return NGX_AGAIN; + } + } + + /* len < node->len */ + + if (len + 1 == (size_t) node->len && node->auto_redirect) { + + r->loc_conf = (node->exact) ? node->exact->loc_conf: + node->inclusive->loc_conf; + rv = NGX_DONE; + } + + node = node->left; + } +} + + +void * +ngx_http_test_content_type(ngx_http_request_t *r, ngx_hash_t *types_hash) +{ + u_char c, *lowcase; + size_t len; + ngx_uint_t i, hash; + + if (types_hash->size == 0) { + return (void *) 4; + } + + if (r->headers_out.content_type.len == 0) { + return NULL; + } + + len = r->headers_out.content_type_len; + + if (r->headers_out.content_type_lowcase == NULL) { + + lowcase = ngx_pnalloc(r->pool, len); + if (lowcase == NULL) { + return NULL; + } + + r->headers_out.content_type_lowcase = lowcase; + + hash = 0; + + for (i = 0; i < len; i++) { + c = ngx_tolower(r->headers_out.content_type.data[i]); + hash = ngx_hash(hash, c); + lowcase[i] = c; + } + + r->headers_out.content_type_hash = hash; + } + + return ngx_hash_find(types_hash, r->headers_out.content_type_hash, + r->headers_out.content_type_lowcase, len); +} + + +ngx_int_t +ngx_http_set_content_type(ngx_http_request_t *r) +{ + u_char c, *exten; + ngx_str_t *type; + ngx_uint_t i, hash; + ngx_http_core_loc_conf_t *clcf; + + if (r->headers_out.content_type.len) { + return NGX_OK; + } + + clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); + + if (r->exten.len) { + + hash = 0; + + for (i = 0; i < r->exten.len; i++) { + c = r->exten.data[i]; + + if (c >= 'A' && c <= 'Z') { + + exten = ngx_pnalloc(r->pool, r->exten.len); + if (exten == NULL) { + return NGX_ERROR; + } + + hash = ngx_hash_strlow(exten, r->exten.data, r->exten.len); + + r->exten.data = exten; + + break; + } + + hash = ngx_hash(hash, c); + } + + type = ngx_hash_find(&clcf->types_hash, hash, + r->exten.data, r->exten.len); + + if (type) { + r->headers_out.content_type_len = type->len; + r->headers_out.content_type = *type; + + return NGX_OK; + } + } + + r->headers_out.content_type_len = clcf->default_type.len; + r->headers_out.content_type = clcf->default_type; + + return NGX_OK; +} + + +void +ngx_http_set_exten(ngx_http_request_t *r) +{ + ngx_int_t i; + + ngx_str_null(&r->exten); + + for (i = r->uri.len - 1; i > 1; i--) { + if (r->uri.data[i] == '.' && r->uri.data[i - 1] != '/') { + + r->exten.len = r->uri.len - i - 1; + r->exten.data = &r->uri.data[i + 1]; + + return; + + } else if (r->uri.data[i] == '/') { + return; + } + } + + return; +} + + +ngx_int_t +ngx_http_set_etag(ngx_http_request_t *r) +{ + ngx_table_elt_t *etag; + ngx_http_core_loc_conf_t *clcf; + + clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); + + if (!clcf->etag) { + return NGX_OK; + } + + etag = ngx_list_push(&r->headers_out.headers); + if (etag == NULL) { + return NGX_ERROR; + } + + etag->hash = 1; + ngx_str_set(&etag->key, "ETag"); + + etag->value.data = ngx_pnalloc(r->pool, NGX_OFF_T_LEN + NGX_TIME_T_LEN + 3); + if (etag->value.data == NULL) { + etag->hash = 0; + return NGX_ERROR; + } + + etag->value.len = ngx_sprintf(etag->value.data, "\"%xT-%xO\"", + r->headers_out.last_modified_time, + r->headers_out.content_length_n) + - etag->value.data; + + r->headers_out.etag = etag; + + return NGX_OK; +} + + +void +ngx_http_weak_etag(ngx_http_request_t *r) +{ + size_t len; + u_char *p; + ngx_table_elt_t *etag; + + etag = r->headers_out.etag; + + if (etag == NULL) { + return; + } + + if (etag->value.len > 2 + && etag->value.data[0] == 'W' + && etag->value.data[1] == '/') + { + return; + } + + if (etag->value.len < 1 || etag->value.data[0] != '"') { + r->headers_out.etag->hash = 0; + r->headers_out.etag = NULL; + return; + } + + p = ngx_pnalloc(r->pool, etag->value.len + 2); + if (p == NULL) { + r->headers_out.etag->hash = 0; + r->headers_out.etag = NULL; + return; + } + + len = ngx_sprintf(p, "W/%V", &etag->value) - p; + + etag->value.data = p; + etag->value.len = len; +} + + +ngx_int_t +ngx_http_send_response(ngx_http_request_t *r, ngx_uint_t status, + ngx_str_t *ct, ngx_http_complex_value_t *cv) +{ + ngx_int_t rc; + ngx_str_t val; + ngx_buf_t *b; + ngx_chain_t out; + + if (ngx_http_discard_request_body(r) != NGX_OK) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + r->headers_out.status = status; + + if (ngx_http_complex_value(r, cv, &val) != NGX_OK) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + if (status == NGX_HTTP_MOVED_PERMANENTLY + || status == NGX_HTTP_MOVED_TEMPORARILY + || status == NGX_HTTP_SEE_OTHER + || status == NGX_HTTP_TEMPORARY_REDIRECT) + { + ngx_http_clear_location(r); + + r->headers_out.location = ngx_list_push(&r->headers_out.headers); + if (r->headers_out.location == NULL) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + r->headers_out.location->hash = 1; + ngx_str_set(&r->headers_out.location->key, "Location"); + r->headers_out.location->value = val; + + return status; + } + + r->headers_out.content_length_n = val.len; + + if (ct) { + r->headers_out.content_type_len = ct->len; + r->headers_out.content_type = *ct; + + } else { + if (ngx_http_set_content_type(r) != NGX_OK) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + } + + if (r->method == NGX_HTTP_HEAD || (r != r->main && val.len == 0)) { + return ngx_http_send_header(r); + } + + b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); + if (b == NULL) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + b->pos = val.data; + b->last = val.data + val.len; + b->memory = val.len ? 1 : 0; + b->last_buf = (r == r->main) ? 1 : 0; + b->last_in_chain = 1; + + out.buf = b; + out.next = NULL; + + rc = ngx_http_send_header(r); + + if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { + return rc; + } + + return ngx_http_output_filter(r, &out); +} + + +ngx_int_t +ngx_http_send_header(ngx_http_request_t *r) +{ + if (r->post_action) { + return NGX_OK; + } + + if (r->header_sent) { + ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, + "header already sent"); + return NGX_ERROR; + } + + if (r->err_status) { + r->headers_out.status = r->err_status; + r->headers_out.status_line.len = 0; + } + + return ngx_http_top_header_filter(r); +} + + +ngx_int_t +ngx_http_output_filter(ngx_http_request_t *r, ngx_chain_t *in) +{ + ngx_int_t rc; + ngx_connection_t *c; + + c = r->connection; + + ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, + "http output filter \"%V?%V\"", &r->uri, &r->args); + + rc = ngx_http_top_body_filter(r, in); + + if (rc == NGX_ERROR) { + /* NGX_ERROR may be returned by any filter */ + c->error = 1; + } + + return rc; +} + + +u_char * +ngx_http_map_uri_to_path(ngx_http_request_t *r, ngx_str_t *path, + size_t *root_length, size_t reserved) +{ + u_char *last; + size_t alias; + ngx_http_core_loc_conf_t *clcf; + + clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); + + alias = clcf->alias; + + if (alias && !r->valid_location) { + ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, + "\"alias\" cannot be used in location \"%V\" " + "where URI was rewritten", &clcf->name); + return NULL; + } + + if (clcf->root_lengths == NULL) { + + *root_length = clcf->root.len; + + path->len = clcf->root.len + reserved + r->uri.len - alias + 1; + + path->data = ngx_pnalloc(r->pool, path->len); + if (path->data == NULL) { + return NULL; + } + + last = ngx_copy(path->data, clcf->root.data, clcf->root.len); + + } else { + + if (alias == NGX_MAX_SIZE_T_VALUE) { + reserved += r->add_uri_to_alias ? r->uri.len + 1 : 1; + + } else { + reserved += r->uri.len - alias + 1; + } + + if (ngx_http_script_run(r, path, clcf->root_lengths->elts, reserved, + clcf->root_values->elts) + == NULL) + { + return NULL; + } + + if (ngx_get_full_name(r->pool, (ngx_str_t *) &ngx_cycle->prefix, path) + != NGX_OK) + { + return NULL; + } + + *root_length = path->len - reserved; + last = path->data + *root_length; + + if (alias == NGX_MAX_SIZE_T_VALUE) { + if (!r->add_uri_to_alias) { + *last = '\0'; + return last; + } + + alias = 0; + } + } + + last = ngx_cpystrn(last, r->uri.data + alias, r->uri.len - alias + 1); + + return last; +} + + +ngx_int_t +ngx_http_auth_basic_user(ngx_http_request_t *r) +{ + ngx_str_t auth, encoded; + ngx_uint_t len; + + if (r->headers_in.user.len == 0 && r->headers_in.user.data != NULL) { + return NGX_DECLINED; + } + + if (r->headers_in.authorization == NULL) { + r->headers_in.user.data = (u_char *) ""; + return NGX_DECLINED; + } + + encoded = r->headers_in.authorization->value; + + if (encoded.len < sizeof("Basic ") - 1 + || ngx_strncasecmp(encoded.data, (u_char *) "Basic ", + sizeof("Basic ") - 1) + != 0) + { + r->headers_in.user.data = (u_char *) ""; + return NGX_DECLINED; + } + + encoded.len -= sizeof("Basic ") - 1; + encoded.data += sizeof("Basic ") - 1; + + while (encoded.len && encoded.data[0] == ' ') { + encoded.len--; + encoded.data++; + } + + if (encoded.len == 0) { + r->headers_in.user.data = (u_char *) ""; + return NGX_DECLINED; + } + + auth.len = ngx_base64_decoded_length(encoded.len); + auth.data = ngx_pnalloc(r->pool, auth.len + 1); + if (auth.data == NULL) { + return NGX_ERROR; + } + + if (ngx_decode_base64(&auth, &encoded) != NGX_OK) { + r->headers_in.user.data = (u_char *) ""; + return NGX_DECLINED; + } + + auth.data[auth.len] = '\0'; + + for (len = 0; len < auth.len; len++) { + if (auth.data[len] == ':') { + break; + } + } + + if (len == 0 || len == auth.len) { + r->headers_in.user.data = (u_char *) ""; + return NGX_DECLINED; + } + + r->headers_in.user.len = len; + r->headers_in.user.data = auth.data; + r->headers_in.passwd.len = auth.len - len - 1; + r->headers_in.passwd.data = &auth.data[len + 1]; + + return NGX_OK; +} + + +#if (NGX_HTTP_GZIP) + +ngx_int_t +ngx_http_gzip_ok(ngx_http_request_t *r) +{ + time_t date, expires; + ngx_uint_t p; + ngx_array_t *cc; + ngx_table_elt_t *e, *d, *ae; + ngx_http_core_loc_conf_t *clcf; + + r->gzip_tested = 1; + + if (r != r->main) { + return NGX_DECLINED; + } + + ae = r->headers_in.accept_encoding; + if (ae == NULL) { + return NGX_DECLINED; + } + + if (ae->value.len < sizeof("gzip") - 1) { + return NGX_DECLINED; + } + + /* + * test first for the most common case "gzip,...": + * MSIE: "gzip, deflate" + * Firefox: "gzip,deflate" + * Chrome: "gzip,deflate,sdch" + * Safari: "gzip, deflate" + * Opera: "gzip, deflate" + */ + + if (ngx_memcmp(ae->value.data, "gzip,", 5) != 0 + && ngx_http_gzip_accept_encoding(&ae->value) != NGX_OK) + { + return NGX_DECLINED; + } + + clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); + + if (r->headers_in.msie6 && clcf->gzip_disable_msie6) { + return NGX_DECLINED; + } + + if (r->http_version < clcf->gzip_http_version) { + return NGX_DECLINED; + } + + if (r->headers_in.via == NULL) { + goto ok; + } + + p = clcf->gzip_proxied; + + if (p & NGX_HTTP_GZIP_PROXIED_OFF) { + return NGX_DECLINED; + } + + if (p & NGX_HTTP_GZIP_PROXIED_ANY) { + goto ok; + } + + if (r->headers_in.authorization && (p & NGX_HTTP_GZIP_PROXIED_AUTH)) { + goto ok; + } + + e = r->headers_out.expires; + + if (e) { + + if (!(p & NGX_HTTP_GZIP_PROXIED_EXPIRED)) { + return NGX_DECLINED; + } + + expires = ngx_parse_http_time(e->value.data, e->value.len); + if (expires == NGX_ERROR) { + return NGX_DECLINED; + } + + d = r->headers_out.date; + + if (d) { + date = ngx_parse_http_time(d->value.data, d->value.len); + if (date == NGX_ERROR) { + return NGX_DECLINED; + } + + } else { + date = ngx_time(); + } + + if (expires < date) { + goto ok; + } + + return NGX_DECLINED; + } + + cc = &r->headers_out.cache_control; + + if (cc->elts) { + + if ((p & NGX_HTTP_GZIP_PROXIED_NO_CACHE) + && ngx_http_parse_multi_header_lines(cc, &ngx_http_gzip_no_cache, + NULL) + >= 0) + { + goto ok; + } + + if ((p & NGX_HTTP_GZIP_PROXIED_NO_STORE) + && ngx_http_parse_multi_header_lines(cc, &ngx_http_gzip_no_store, + NULL) + >= 0) + { + goto ok; + } + + if ((p & NGX_HTTP_GZIP_PROXIED_PRIVATE) + && ngx_http_parse_multi_header_lines(cc, &ngx_http_gzip_private, + NULL) + >= 0) + { + goto ok; + } + + return NGX_DECLINED; + } + + if ((p & NGX_HTTP_GZIP_PROXIED_NO_LM) && r->headers_out.last_modified) { + return NGX_DECLINED; + } + + if ((p & NGX_HTTP_GZIP_PROXIED_NO_ETAG) && r->headers_out.etag) { + return NGX_DECLINED; + } + +ok: + +#if (NGX_PCRE) + + if (clcf->gzip_disable && r->headers_in.user_agent) { + + if (ngx_regex_exec_array(clcf->gzip_disable, + &r->headers_in.user_agent->value, + r->connection->log) + != NGX_DECLINED) + { + return NGX_DECLINED; + } + } + +#endif + + r->gzip_ok = 1; + + return NGX_OK; +} + + +/* + * gzip is enabled for the following quantities: + * "gzip; q=0.001" ... "gzip; q=1.000" + * gzip is disabled for the following quantities: + * "gzip; q=0" ... "gzip; q=0.000", and for any invalid cases + */ + +static ngx_int_t +ngx_http_gzip_accept_encoding(ngx_str_t *ae) +{ + u_char *p, *start, *last; + + start = ae->data; + last = start + ae->len; + + for ( ;; ) { + p = ngx_strcasestrn(start, "gzip", 4 - 1); + if (p == NULL) { + return NGX_DECLINED; + } + + if (p == start || (*(p - 1) == ',' || *(p - 1) == ' ')) { + break; + } + + start = p + 4; + } + + p += 4; + + while (p < last) { + switch (*p++) { + case ',': + return NGX_OK; + case ';': + goto quantity; + case ' ': + continue; + default: + return NGX_DECLINED; + } + } + + return NGX_OK; + +quantity: + + while (p < last) { + switch (*p++) { + case 'q': + case 'Q': + goto equal; + case ' ': + continue; + default: + return NGX_DECLINED; + } + } + + return NGX_OK; + +equal: + + if (p + 2 > last || *p++ != '=') { + return NGX_DECLINED; + } + + if (ngx_http_gzip_quantity(p, last) == 0) { + return NGX_DECLINED; + } + + return NGX_OK; +} + + +static ngx_uint_t +ngx_http_gzip_quantity(u_char *p, u_char *last) +{ + u_char c; + ngx_uint_t n, q; + + c = *p++; + + if (c != '0' && c != '1') { + return 0; + } + + q = (c - '0') * 100; + + if (p == last) { + return q; + } + + c = *p++; + + if (c == ',' || c == ' ') { + return q; + } + + if (c != '.') { + return 0; + } + + n = 0; + + while (p < last) { + c = *p++; + + if (c == ',' || c == ' ') { + break; + } + + if (c >= '0' && c <= '9') { + q += c - '0'; + n++; + continue; + } + + return 0; + } + + if (q > 100 || n > 3) { + return 0; + } + + return q; +} + +#endif + + +ngx_int_t +ngx_http_subrequest(ngx_http_request_t *r, + ngx_str_t *uri, ngx_str_t *args, ngx_http_request_t **psr, + ngx_http_post_subrequest_t *ps, ngx_uint_t flags) +{ + ngx_time_t *tp; + ngx_connection_t *c; + ngx_http_request_t *sr; + ngx_http_core_srv_conf_t *cscf; + ngx_http_postponed_request_t *pr, *p; + + if (r->subrequests == 0) { + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "subrequests cycle while processing \"%V\"", uri); + return NGX_ERROR; + } + + /* + * 1000 is reserved for other purposes. + */ + if (r->main->count >= 65535 - 1000) { + ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0, + "request reference counter overflow " + "while processing \"%V\"", uri); + return NGX_ERROR; + } + + sr = ngx_pcalloc(r->pool, sizeof(ngx_http_request_t)); + if (sr == NULL) { + return NGX_ERROR; + } + + sr->signature = NGX_HTTP_MODULE; + + c = r->connection; + sr->connection = c; + + sr->ctx = ngx_pcalloc(r->pool, sizeof(void *) * ngx_http_max_module); + if (sr->ctx == NULL) { + return NGX_ERROR; + } + + if (ngx_list_init(&sr->headers_out.headers, r->pool, 20, + sizeof(ngx_table_elt_t)) + != NGX_OK) + { + return NGX_ERROR; + } + + cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module); + sr->main_conf = cscf->ctx->main_conf; + sr->srv_conf = cscf->ctx->srv_conf; + sr->loc_conf = cscf->ctx->loc_conf; + + sr->pool = r->pool; + + sr->headers_in = r->headers_in; + + ngx_http_clear_content_length(sr); + ngx_http_clear_accept_ranges(sr); + ngx_http_clear_last_modified(sr); + + sr->request_body = r->request_body; + +#if (NGX_HTTP_V2) + sr->stream = r->stream; +#endif + + sr->method = NGX_HTTP_GET; + sr->http_version = r->http_version; + + sr->request_line = r->request_line; + sr->uri = *uri; + + if (args) { + sr->args = *args; + } + + ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, + "http subrequest \"%V?%V\"", uri, &sr->args); + + sr->subrequest_in_memory = (flags & NGX_HTTP_SUBREQUEST_IN_MEMORY) != 0; + sr->waited = (flags & NGX_HTTP_SUBREQUEST_WAITED) != 0; + + sr->unparsed_uri = r->unparsed_uri; + sr->method_name = ngx_http_core_get_method; + sr->http_protocol = r->http_protocol; + + ngx_http_set_exten(sr); + + sr->main = r->main; + sr->parent = r; + sr->post_subrequest = ps; + sr->read_event_handler = ngx_http_request_empty_handler; + sr->write_event_handler = ngx_http_handler; + + if (c->data == r && r->postponed == NULL) { + c->data = sr; + } + + sr->variables = r->variables; + + sr->log_handler = r->log_handler; + + pr = ngx_palloc(r->pool, sizeof(ngx_http_postponed_request_t)); + if (pr == NULL) { + return NGX_ERROR; + } + + pr->request = sr; + pr->out = NULL; + pr->next = NULL; + + if (r->postponed) { + for (p = r->postponed; p->next; p = p->next) { /* void */ } + p->next = pr; + + } else { + r->postponed = pr; + } + + sr->internal = 1; + + sr->discard_body = r->discard_body; + sr->expect_tested = 1; + sr->main_filter_need_in_memory = r->main_filter_need_in_memory; + + sr->uri_changes = NGX_HTTP_MAX_URI_CHANGES + 1; + sr->subrequests = r->subrequests - 1; + + tp = ngx_timeofday(); + sr->start_sec = tp->sec; + sr->start_msec = tp->msec; + + r->main->count++; + + *psr = sr; + + if (flags & NGX_HTTP_SUBREQUEST_CLONE) { + sr->method = r->method; + sr->method_name = r->method_name; + sr->loc_conf = r->loc_conf; + sr->valid_location = r->valid_location; + sr->content_handler = r->content_handler; + sr->phase_handler = r->phase_handler; + sr->write_event_handler = ngx_http_core_run_phases; + + ngx_http_update_location_config(sr); + } + + return ngx_http_post_request(sr, NULL); +} + + +ngx_int_t +ngx_http_internal_redirect(ngx_http_request_t *r, + ngx_str_t *uri, ngx_str_t *args) +{ + ngx_http_core_srv_conf_t *cscf; + + r->uri_changes--; + + if (r->uri_changes == 0) { + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "rewrite or internal redirection cycle " + "while internally redirecting to \"%V\"", uri); + + r->main->count++; + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + return NGX_DONE; + } + + r->uri = *uri; + + if (args) { + r->args = *args; + + } else { + ngx_str_null(&r->args); + } + + ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "internal redirect: \"%V?%V\"", uri, &r->args); + + ngx_http_set_exten(r); + + /* clear the modules contexts */ + ngx_memzero(r->ctx, sizeof(void *) * ngx_http_max_module); + + cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module); + r->loc_conf = cscf->ctx->loc_conf; + + ngx_http_update_location_config(r); + +#if (NGX_HTTP_CACHE) + r->cache = NULL; +#endif + + r->internal = 1; + r->valid_unparsed_uri = 0; + r->add_uri_to_alias = 0; + r->main->count++; + + ngx_http_handler(r); + + return NGX_DONE; +} + + +ngx_int_t +ngx_http_named_location(ngx_http_request_t *r, ngx_str_t *name) +{ + ngx_http_core_srv_conf_t *cscf; + ngx_http_core_loc_conf_t **clcfp; + ngx_http_core_main_conf_t *cmcf; + + r->main->count++; + r->uri_changes--; + + if (r->uri_changes == 0) { + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "rewrite or internal redirection cycle " + "while redirect to named location \"%V\"", name); + + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + return NGX_DONE; + } + + if (r->uri.len == 0) { + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "empty URI in redirect to named location \"%V\"", name); + + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + return NGX_DONE; + } + + cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module); + + if (cscf->named_locations) { + + for (clcfp = cscf->named_locations; *clcfp; clcfp++) { + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "test location: \"%V\"", &(*clcfp)->name); + + if (name->len != (*clcfp)->name.len + || ngx_strncmp(name->data, (*clcfp)->name.data, name->len) != 0) + { + continue; + } + + ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "using location: %V \"%V?%V\"", + name, &r->uri, &r->args); + + r->internal = 1; + r->content_handler = NULL; + r->uri_changed = 0; + r->loc_conf = (*clcfp)->loc_conf; + + /* clear the modules contexts */ + ngx_memzero(r->ctx, sizeof(void *) * ngx_http_max_module); + + ngx_http_update_location_config(r); + + cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); + + r->phase_handler = cmcf->phase_engine.location_rewrite_index; + + r->write_event_handler = ngx_http_core_run_phases; + ngx_http_core_run_phases(r); + + return NGX_DONE; + } + } + + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "could not find named location \"%V\"", name); + + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + + return NGX_DONE; +} + + +ngx_http_cleanup_t * +ngx_http_cleanup_add(ngx_http_request_t *r, size_t size) +{ + ngx_http_cleanup_t *cln; + + r = r->main; + + cln = ngx_palloc(r->pool, sizeof(ngx_http_cleanup_t)); + if (cln == NULL) { + return NULL; + } + + if (size) { + cln->data = ngx_palloc(r->pool, size); + if (cln->data == NULL) { + return NULL; + } + + } else { + cln->data = NULL; + } + + cln->handler = NULL; + cln->next = r->cleanup; + + r->cleanup = cln; + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "http cleanup add: %p", cln); + + return cln; +} + + +ngx_int_t +ngx_http_set_disable_symlinks(ngx_http_request_t *r, + ngx_http_core_loc_conf_t *clcf, ngx_str_t *path, ngx_open_file_info_t *of) +{ +#if (NGX_HAVE_OPENAT) + u_char *p; + ngx_str_t from; + + of->disable_symlinks = clcf->disable_symlinks; + + if (clcf->disable_symlinks_from == NULL) { + return NGX_OK; + } + + if (ngx_http_complex_value(r, clcf->disable_symlinks_from, &from) + != NGX_OK) + { + return NGX_ERROR; + } + + if (from.len == 0 + || from.len > path->len + || ngx_memcmp(path->data, from.data, from.len) != 0) + { + return NGX_OK; + } + + if (from.len == path->len) { + of->disable_symlinks = NGX_DISABLE_SYMLINKS_OFF; + return NGX_OK; + } + + p = path->data + from.len; + + if (*p == '/') { + of->disable_symlinks_from = from.len; + return NGX_OK; + } + + p--; + + if (*p == '/') { + of->disable_symlinks_from = from.len - 1; + } +#endif + + return NGX_OK; +} + + +ngx_int_t +ngx_http_get_forwarded_addr(ngx_http_request_t *r, ngx_addr_t *addr, + ngx_array_t *headers, ngx_str_t *value, ngx_array_t *proxies, + int recursive) +{ + ngx_int_t rc; + ngx_uint_t i, found; + ngx_table_elt_t **h; + + if (headers == NULL) { + return ngx_http_get_forwarded_addr_internal(r, addr, value->data, + value->len, proxies, + recursive); + } + + i = headers->nelts; + h = headers->elts; + + rc = NGX_DECLINED; + + found = 0; + + while (i-- > 0) { + rc = ngx_http_get_forwarded_addr_internal(r, addr, h[i]->value.data, + h[i]->value.len, proxies, + recursive); + + if (!recursive) { + break; + } + + if (rc == NGX_DECLINED && found) { + rc = NGX_DONE; + break; + } + + if (rc != NGX_OK) { + break; + } + + found = 1; + } + + return rc; +} + + +static ngx_int_t +ngx_http_get_forwarded_addr_internal(ngx_http_request_t *r, ngx_addr_t *addr, + u_char *xff, size_t xfflen, ngx_array_t *proxies, int recursive) +{ + u_char *p; + ngx_int_t rc; + ngx_addr_t paddr; + + if (ngx_cidr_match(addr->sockaddr, proxies) != NGX_OK) { + return NGX_DECLINED; + } + + for (p = xff + xfflen - 1; p > xff; p--, xfflen--) { + if (*p != ' ' && *p != ',') { + break; + } + } + + for ( /* void */ ; p > xff; p--) { + if (*p == ' ' || *p == ',') { + p++; + break; + } + } + + if (ngx_parse_addr_port(r->pool, &paddr, p, xfflen - (p - xff)) != NGX_OK) { + return NGX_DECLINED; + } + + *addr = paddr; + + if (recursive && p > xff) { + rc = ngx_http_get_forwarded_addr_internal(r, addr, xff, p - 1 - xff, + proxies, 1); + + if (rc == NGX_DECLINED) { + return NGX_DONE; + } + + /* rc == NGX_OK || rc == NGX_DONE */ + return rc; + } + + return NGX_OK; +} + + +static char * +ngx_http_core_server(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy) +{ + char *rv; + void *mconf; + ngx_uint_t i; + ngx_conf_t pcf; + ngx_http_module_t *module; + struct sockaddr_in *sin; + ngx_http_conf_ctx_t *ctx, *http_ctx; + ngx_http_listen_opt_t lsopt; + ngx_http_core_srv_conf_t *cscf, **cscfp; + ngx_http_core_main_conf_t *cmcf; + + ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); + if (ctx == NULL) { + return NGX_CONF_ERROR; + } + + http_ctx = cf->ctx; + ctx->main_conf = http_ctx->main_conf; + + /* the server{}'s srv_conf */ + + ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); + if (ctx->srv_conf == NULL) { + return NGX_CONF_ERROR; + } + + /* the server{}'s loc_conf */ + + ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); + if (ctx->loc_conf == NULL) { + return NGX_CONF_ERROR; + } + + for (i = 0; cf->cycle->modules[i]; i++) { + if (cf->cycle->modules[i]->type != NGX_HTTP_MODULE) { + continue; + } + + module = cf->cycle->modules[i]->ctx; + + if (module->create_srv_conf) { + mconf = module->create_srv_conf(cf); + if (mconf == NULL) { + return NGX_CONF_ERROR; + } + + ctx->srv_conf[cf->cycle->modules[i]->ctx_index] = mconf; + } + + if (module->create_loc_conf) { + mconf = module->create_loc_conf(cf); + if (mconf == NULL) { + return NGX_CONF_ERROR; + } + + ctx->loc_conf[cf->cycle->modules[i]->ctx_index] = mconf; + } + } + + + /* the server configuration context */ + + cscf = ctx->srv_conf[ngx_http_core_module.ctx_index]; + cscf->ctx = ctx; + + + cmcf = ctx->main_conf[ngx_http_core_module.ctx_index]; + + cscfp = ngx_array_push(&cmcf->servers); + if (cscfp == NULL) { + return NGX_CONF_ERROR; + } + + *cscfp = cscf; + + + /* parse inside server{} */ + + pcf = *cf; + cf->ctx = ctx; + cf->cmd_type = NGX_HTTP_SRV_CONF; + + rv = ngx_conf_parse(cf, NULL); + + *cf = pcf; + + if (rv == NGX_CONF_OK && !cscf->listen) { + ngx_memzero(&lsopt, sizeof(ngx_http_listen_opt_t)); + + sin = &lsopt.sockaddr.sockaddr_in; + + sin->sin_family = AF_INET; +#if (NGX_WIN32) + sin->sin_port = htons(80); +#else + sin->sin_port = htons((getuid() == 0) ? 80 : 8000); +#endif + sin->sin_addr.s_addr = INADDR_ANY; + + lsopt.socklen = sizeof(struct sockaddr_in); + + lsopt.backlog = NGX_LISTEN_BACKLOG; + lsopt.rcvbuf = -1; + lsopt.sndbuf = -1; +#if (NGX_HAVE_SETFIB) + lsopt.setfib = -1; +#endif +#if (NGX_HAVE_TCP_FASTOPEN) + lsopt.fastopen = -1; +#endif + lsopt.wildcard = 1; + + (void) ngx_sock_ntop(&lsopt.sockaddr.sockaddr, lsopt.socklen, + lsopt.addr, NGX_SOCKADDR_STRLEN, 1); + + if (ngx_http_add_listen(cf, cscf, &lsopt) != NGX_OK) { + return NGX_CONF_ERROR; + } + } + + return rv; +} + + +static char * +ngx_http_core_location(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy) +{ + char *rv; + u_char *mod; + size_t len; + ngx_str_t *value, *name; + ngx_uint_t i; + ngx_conf_t save; + ngx_http_module_t *module; + ngx_http_conf_ctx_t *ctx, *pctx; + ngx_http_core_loc_conf_t *clcf, *pclcf; + + ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); + if (ctx == NULL) { + return NGX_CONF_ERROR; + } + + pctx = cf->ctx; + ctx->main_conf = pctx->main_conf; + ctx->srv_conf = pctx->srv_conf; + + ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); + if (ctx->loc_conf == NULL) { + return NGX_CONF_ERROR; + } + + for (i = 0; cf->cycle->modules[i]; i++) { + if (cf->cycle->modules[i]->type != NGX_HTTP_MODULE) { + continue; + } + + module = cf->cycle->modules[i]->ctx; + + if (module->create_loc_conf) { + ctx->loc_conf[cf->cycle->modules[i]->ctx_index] = + module->create_loc_conf(cf); + if (ctx->loc_conf[cf->cycle->modules[i]->ctx_index] == NULL) { + return NGX_CONF_ERROR; + } + } + } + + clcf = ctx->loc_conf[ngx_http_core_module.ctx_index]; + clcf->loc_conf = ctx->loc_conf; + + value = cf->args->elts; + + if (cf->args->nelts == 3) { + + len = value[1].len; + mod = value[1].data; + name = &value[2]; + + if (len == 1 && mod[0] == '=') { + + clcf->name = *name; + clcf->exact_match = 1; + + } else if (len == 2 && mod[0] == '^' && mod[1] == '~') { + + clcf->name = *name; + clcf->noregex = 1; + + } else if (len == 1 && mod[0] == '~') { + + if (ngx_http_core_regex_location(cf, clcf, name, 0) != NGX_OK) { + return NGX_CONF_ERROR; + } + + } else if (len == 2 && mod[0] == '~' && mod[1] == '*') { + + if (ngx_http_core_regex_location(cf, clcf, name, 1) != NGX_OK) { + return NGX_CONF_ERROR; + } + + } else { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid location modifier \"%V\"", &value[1]); + return NGX_CONF_ERROR; + } + + } else { + + name = &value[1]; + + if (name->data[0] == '=') { + + clcf->name.len = name->len - 1; + clcf->name.data = name->data + 1; + clcf->exact_match = 1; + + } else if (name->data[0] == '^' && name->data[1] == '~') { + + clcf->name.len = name->len - 2; + clcf->name.data = name->data + 2; + clcf->noregex = 1; + + } else if (name->data[0] == '~') { + + name->len--; + name->data++; + + if (name->data[0] == '*') { + + name->len--; + name->data++; + + if (ngx_http_core_regex_location(cf, clcf, name, 1) != NGX_OK) { + return NGX_CONF_ERROR; + } + + } else { + if (ngx_http_core_regex_location(cf, clcf, name, 0) != NGX_OK) { + return NGX_CONF_ERROR; + } + } + + } else { + + clcf->name = *name; + + if (name->data[0] == '@') { + clcf->named = 1; + } + } + } + + pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index]; + + if (cf->cmd_type == NGX_HTTP_LOC_CONF) { + + /* nested location */ + +#if 0 + clcf->prev_location = pclcf; +#endif + + if (pclcf->exact_match) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "location \"%V\" cannot be inside " + "the exact location \"%V\"", + &clcf->name, &pclcf->name); + return NGX_CONF_ERROR; + } + + if (pclcf->named) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "location \"%V\" cannot be inside " + "the named location \"%V\"", + &clcf->name, &pclcf->name); + return NGX_CONF_ERROR; + } + + if (clcf->named) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "named location \"%V\" can be " + "on the server level only", + &clcf->name); + return NGX_CONF_ERROR; + } + + len = pclcf->name.len; + +#if (NGX_PCRE) + if (clcf->regex == NULL + && ngx_filename_cmp(clcf->name.data, pclcf->name.data, len) != 0) +#else + if (ngx_filename_cmp(clcf->name.data, pclcf->name.data, len) != 0) +#endif + { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "location \"%V\" is outside location \"%V\"", + &clcf->name, &pclcf->name); + return NGX_CONF_ERROR; + } + } + + if (ngx_http_add_location(cf, &pclcf->locations, clcf) != NGX_OK) { + return NGX_CONF_ERROR; + } + + save = *cf; + cf->ctx = ctx; + cf->cmd_type = NGX_HTTP_LOC_CONF; + + rv = ngx_conf_parse(cf, NULL); + + *cf = save; + + return rv; +} + + +static ngx_int_t +ngx_http_core_regex_location(ngx_conf_t *cf, ngx_http_core_loc_conf_t *clcf, + ngx_str_t *regex, ngx_uint_t caseless) +{ +#if (NGX_PCRE) + ngx_regex_compile_t rc; + u_char errstr[NGX_MAX_CONF_ERRSTR]; + + ngx_memzero(&rc, sizeof(ngx_regex_compile_t)); + + rc.pattern = *regex; + rc.err.len = NGX_MAX_CONF_ERRSTR; + rc.err.data = errstr; + +#if (NGX_HAVE_CASELESS_FILESYSTEM) + rc.options = NGX_REGEX_CASELESS; +#else + rc.options = caseless ? NGX_REGEX_CASELESS : 0; +#endif + + clcf->regex = ngx_http_regex_compile(cf, &rc); + if (clcf->regex == NULL) { + return NGX_ERROR; + } + + clcf->name = *regex; + + 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_core_types(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + + char *rv; + ngx_conf_t save; + + if (clcf->types == NULL) { + clcf->types = ngx_array_create(cf->pool, 64, sizeof(ngx_hash_key_t)); + if (clcf->types == NULL) { + return NGX_CONF_ERROR; + } + } + + save = *cf; + cf->handler = ngx_http_core_type; + cf->handler_conf = conf; + + rv = ngx_conf_parse(cf, NULL); + + *cf = save; + + return rv; +} + + +static char * +ngx_http_core_type(ngx_conf_t *cf, ngx_command_t *dummy, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + + ngx_str_t *value, *content_type, *old; + ngx_uint_t i, n, hash; + ngx_hash_key_t *type; + + value = cf->args->elts; + + if (ngx_strcmp(value[0].data, "include") == 0) { + if (cf->args->nelts != 2) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid number of arguments" + " in \"include\" directive"); + return NGX_CONF_ERROR; + } + + return ngx_conf_include(cf, dummy, conf); + } + + content_type = ngx_palloc(cf->pool, sizeof(ngx_str_t)); + if (content_type == NULL) { + return NGX_CONF_ERROR; + } + + *content_type = value[0]; + + for (i = 1; i < cf->args->nelts; i++) { + + hash = ngx_hash_strlow(value[i].data, value[i].data, value[i].len); + + type = clcf->types->elts; + for (n = 0; n < clcf->types->nelts; n++) { + if (ngx_strcmp(value[i].data, type[n].key.data) == 0) { + old = type[n].value; + type[n].value = content_type; + + ngx_conf_log_error(NGX_LOG_WARN, cf, 0, + "duplicate extension \"%V\", " + "content type: \"%V\", " + "previous content type: \"%V\"", + &value[i], content_type, old); + goto next; + } + } + + + type = ngx_array_push(clcf->types); + if (type == NULL) { + return NGX_CONF_ERROR; + } + + type->key = value[i]; + type->key_hash = hash; + type->value = content_type; + + next: + continue; + } + + return NGX_CONF_OK; +} + + +static ngx_int_t +ngx_http_core_preconfiguration(ngx_conf_t *cf) +{ + return ngx_http_variables_add_core_vars(cf); +} + + +static ngx_int_t +ngx_http_core_postconfiguration(ngx_conf_t *cf) +{ + ngx_http_top_request_body_filter = ngx_http_request_body_save_filter; + + return NGX_OK; +} + + +static void * +ngx_http_core_create_main_conf(ngx_conf_t *cf) +{ + ngx_http_core_main_conf_t *cmcf; + + cmcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_core_main_conf_t)); + if (cmcf == NULL) { + return NULL; + } + + if (ngx_array_init(&cmcf->servers, cf->pool, 4, + sizeof(ngx_http_core_srv_conf_t *)) + != NGX_OK) + { + return NULL; + } + + cmcf->server_names_hash_max_size = NGX_CONF_UNSET_UINT; + cmcf->server_names_hash_bucket_size = NGX_CONF_UNSET_UINT; + + cmcf->variables_hash_max_size = NGX_CONF_UNSET_UINT; + cmcf->variables_hash_bucket_size = NGX_CONF_UNSET_UINT; + + return cmcf; +} + + +static char * +ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf) +{ + ngx_http_core_main_conf_t *cmcf = conf; + + ngx_conf_init_uint_value(cmcf->server_names_hash_max_size, 512); + ngx_conf_init_uint_value(cmcf->server_names_hash_bucket_size, + ngx_cacheline_size); + + cmcf->server_names_hash_bucket_size = + ngx_align(cmcf->server_names_hash_bucket_size, ngx_cacheline_size); + + + ngx_conf_init_uint_value(cmcf->variables_hash_max_size, 1024); + ngx_conf_init_uint_value(cmcf->variables_hash_bucket_size, 64); + + cmcf->variables_hash_bucket_size = + ngx_align(cmcf->variables_hash_bucket_size, ngx_cacheline_size); + + if (cmcf->ncaptures) { + cmcf->ncaptures = (cmcf->ncaptures + 1) * 3; + } + + return NGX_CONF_OK; +} + + +static void * +ngx_http_core_create_srv_conf(ngx_conf_t *cf) +{ + ngx_http_core_srv_conf_t *cscf; + + cscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_core_srv_conf_t)); + if (cscf == NULL) { + return NULL; + } + + /* + * set by ngx_pcalloc(): + * + * conf->client_large_buffers.num = 0; + */ + + if (ngx_array_init(&cscf->server_names, cf->temp_pool, 4, + sizeof(ngx_http_server_name_t)) + != NGX_OK) + { + return NULL; + } + + cscf->connection_pool_size = NGX_CONF_UNSET_SIZE; + cscf->request_pool_size = NGX_CONF_UNSET_SIZE; + cscf->client_header_timeout = NGX_CONF_UNSET_MSEC; + cscf->client_header_buffer_size = NGX_CONF_UNSET_SIZE; + cscf->ignore_invalid_headers = NGX_CONF_UNSET; + cscf->merge_slashes = NGX_CONF_UNSET; + cscf->underscores_in_headers = NGX_CONF_UNSET; + + return cscf; +} + + +static char * +ngx_http_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) +{ + ngx_http_core_srv_conf_t *prev = parent; + ngx_http_core_srv_conf_t *conf = child; + + ngx_str_t name; + ngx_http_server_name_t *sn; + + /* TODO: it does not merge, it inits only */ + + ngx_conf_merge_size_value(conf->connection_pool_size, + prev->connection_pool_size, 64 * sizeof(void *)); + ngx_conf_merge_size_value(conf->request_pool_size, + prev->request_pool_size, 4096); + ngx_conf_merge_msec_value(conf->client_header_timeout, + prev->client_header_timeout, 60000); + ngx_conf_merge_size_value(conf->client_header_buffer_size, + prev->client_header_buffer_size, 1024); + ngx_conf_merge_bufs_value(conf->large_client_header_buffers, + prev->large_client_header_buffers, + 4, 8192); + + if (conf->large_client_header_buffers.size < conf->connection_pool_size) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the \"large_client_header_buffers\" size must be " + "equal to or greater than \"connection_pool_size\""); + return NGX_CONF_ERROR; + } + + ngx_conf_merge_value(conf->ignore_invalid_headers, + prev->ignore_invalid_headers, 1); + + ngx_conf_merge_value(conf->merge_slashes, prev->merge_slashes, 1); + + ngx_conf_merge_value(conf->underscores_in_headers, + prev->underscores_in_headers, 0); + + if (conf->server_names.nelts == 0) { + /* the array has 4 empty preallocated elements, so push cannot fail */ + sn = ngx_array_push(&conf->server_names); +#if (NGX_PCRE) + sn->regex = NULL; +#endif + sn->server = conf; + ngx_str_set(&sn->name, ""); + } + + sn = conf->server_names.elts; + name = sn[0].name; + +#if (NGX_PCRE) + if (sn->regex) { + name.len++; + name.data--; + } else +#endif + + if (name.data[0] == '.') { + name.len--; + name.data++; + } + + conf->server_name.len = name.len; + conf->server_name.data = ngx_pstrdup(cf->pool, &name); + if (conf->server_name.data == NULL) { + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; +} + + +static void * +ngx_http_core_create_loc_conf(ngx_conf_t *cf) +{ + ngx_http_core_loc_conf_t *clcf; + + clcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_core_loc_conf_t)); + if (clcf == NULL) { + return NULL; + } + + /* + * set by ngx_pcalloc(): + * + * clcf->root = { 0, NULL }; + * clcf->limit_except = 0; + * clcf->post_action = { 0, NULL }; + * clcf->types = NULL; + * clcf->default_type = { 0, NULL }; + * clcf->error_log = NULL; + * clcf->error_pages = NULL; + * clcf->try_files = NULL; + * clcf->client_body_path = NULL; + * clcf->regex = NULL; + * clcf->exact_match = 0; + * clcf->auto_redirect = 0; + * clcf->alias = 0; + * clcf->gzip_proxied = 0; + * clcf->keepalive_disable = 0; + */ + + clcf->client_max_body_size = NGX_CONF_UNSET; + clcf->client_body_buffer_size = NGX_CONF_UNSET_SIZE; + clcf->client_body_timeout = NGX_CONF_UNSET_MSEC; + clcf->satisfy = NGX_CONF_UNSET_UINT; + clcf->if_modified_since = NGX_CONF_UNSET_UINT; + clcf->max_ranges = NGX_CONF_UNSET_UINT; + clcf->client_body_in_file_only = NGX_CONF_UNSET_UINT; + clcf->client_body_in_single_buffer = NGX_CONF_UNSET; + clcf->internal = NGX_CONF_UNSET; + clcf->sendfile = NGX_CONF_UNSET; + clcf->sendfile_max_chunk = NGX_CONF_UNSET_SIZE; + clcf->aio = NGX_CONF_UNSET; + clcf->aio_write = NGX_CONF_UNSET; +#if (NGX_THREADS) + clcf->thread_pool = NGX_CONF_UNSET_PTR; + clcf->thread_pool_value = NGX_CONF_UNSET_PTR; +#endif + clcf->read_ahead = NGX_CONF_UNSET_SIZE; + clcf->directio = NGX_CONF_UNSET; + clcf->directio_alignment = NGX_CONF_UNSET; + clcf->tcp_nopush = NGX_CONF_UNSET; + clcf->tcp_nodelay = NGX_CONF_UNSET; + clcf->send_timeout = NGX_CONF_UNSET_MSEC; + clcf->send_lowat = NGX_CONF_UNSET_SIZE; + clcf->postpone_output = NGX_CONF_UNSET_SIZE; + clcf->limit_rate = NGX_CONF_UNSET_SIZE; + clcf->limit_rate_after = NGX_CONF_UNSET_SIZE; + clcf->keepalive_timeout = NGX_CONF_UNSET_MSEC; + clcf->keepalive_header = NGX_CONF_UNSET; + clcf->keepalive_requests = NGX_CONF_UNSET_UINT; + clcf->lingering_close = NGX_CONF_UNSET_UINT; + clcf->lingering_time = NGX_CONF_UNSET_MSEC; + clcf->lingering_timeout = NGX_CONF_UNSET_MSEC; + clcf->resolver_timeout = NGX_CONF_UNSET_MSEC; + clcf->reset_timedout_connection = NGX_CONF_UNSET; + clcf->absolute_redirect = NGX_CONF_UNSET; + clcf->server_name_in_redirect = NGX_CONF_UNSET; + clcf->port_in_redirect = NGX_CONF_UNSET; + clcf->msie_padding = NGX_CONF_UNSET; + clcf->msie_refresh = NGX_CONF_UNSET; + clcf->log_not_found = NGX_CONF_UNSET; + clcf->log_subrequest = NGX_CONF_UNSET; + clcf->recursive_error_pages = NGX_CONF_UNSET; + clcf->chunked_transfer_encoding = NGX_CONF_UNSET; + clcf->etag = NGX_CONF_UNSET; + clcf->server_tokens = NGX_CONF_UNSET_UINT; + clcf->types_hash_max_size = NGX_CONF_UNSET_UINT; + clcf->types_hash_bucket_size = NGX_CONF_UNSET_UINT; + + clcf->open_file_cache = NGX_CONF_UNSET_PTR; + clcf->open_file_cache_valid = NGX_CONF_UNSET; + clcf->open_file_cache_min_uses = NGX_CONF_UNSET_UINT; + clcf->open_file_cache_errors = NGX_CONF_UNSET; + clcf->open_file_cache_events = NGX_CONF_UNSET; + +#if (NGX_HTTP_GZIP) + clcf->gzip_vary = NGX_CONF_UNSET; + clcf->gzip_http_version = NGX_CONF_UNSET_UINT; +#if (NGX_PCRE) + clcf->gzip_disable = NGX_CONF_UNSET_PTR; +#endif + clcf->gzip_disable_msie6 = 3; +#if (NGX_HTTP_DEGRADATION) + clcf->gzip_disable_degradation = 3; +#endif +#endif + +#if (NGX_HAVE_OPENAT) + clcf->disable_symlinks = NGX_CONF_UNSET_UINT; + clcf->disable_symlinks_from = NGX_CONF_UNSET_PTR; +#endif + + return clcf; +} + + +static ngx_str_t ngx_http_core_text_html_type = ngx_string("text/html"); +static ngx_str_t ngx_http_core_image_gif_type = ngx_string("image/gif"); +static ngx_str_t ngx_http_core_image_jpeg_type = ngx_string("image/jpeg"); + +static ngx_hash_key_t ngx_http_core_default_types[] = { + { ngx_string("html"), 0, &ngx_http_core_text_html_type }, + { ngx_string("gif"), 0, &ngx_http_core_image_gif_type }, + { ngx_string("jpg"), 0, &ngx_http_core_image_jpeg_type }, + { ngx_null_string, 0, NULL } +}; + + +static char * +ngx_http_core_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) +{ + ngx_http_core_loc_conf_t *prev = parent; + ngx_http_core_loc_conf_t *conf = child; + + ngx_uint_t i; + ngx_hash_key_t *type; + ngx_hash_init_t types_hash; + + if (conf->root.data == NULL) { + + conf->alias = prev->alias; + conf->root = prev->root; + conf->root_lengths = prev->root_lengths; + conf->root_values = prev->root_values; + + if (prev->root.data == NULL) { + ngx_str_set(&conf->root, "html"); + + if (ngx_conf_full_name(cf->cycle, &conf->root, 0) != NGX_OK) { + return NGX_CONF_ERROR; + } + } + } + + if (conf->post_action.data == NULL) { + conf->post_action = prev->post_action; + } + + ngx_conf_merge_uint_value(conf->types_hash_max_size, + prev->types_hash_max_size, 1024); + + ngx_conf_merge_uint_value(conf->types_hash_bucket_size, + prev->types_hash_bucket_size, 64); + + conf->types_hash_bucket_size = ngx_align(conf->types_hash_bucket_size, + ngx_cacheline_size); + + /* + * the special handling of the "types" directive in the "http" section + * to inherit the http's conf->types_hash to all servers + */ + + if (prev->types && prev->types_hash.buckets == NULL) { + + types_hash.hash = &prev->types_hash; + types_hash.key = ngx_hash_key_lc; + types_hash.max_size = conf->types_hash_max_size; + types_hash.bucket_size = conf->types_hash_bucket_size; + types_hash.name = "types_hash"; + types_hash.pool = cf->pool; + types_hash.temp_pool = NULL; + + if (ngx_hash_init(&types_hash, prev->types->elts, prev->types->nelts) + != NGX_OK) + { + return NGX_CONF_ERROR; + } + } + + if (conf->types == NULL) { + conf->types = prev->types; + conf->types_hash = prev->types_hash; + } + + if (conf->types == NULL) { + conf->types = ngx_array_create(cf->pool, 3, sizeof(ngx_hash_key_t)); + if (conf->types == NULL) { + return NGX_CONF_ERROR; + } + + for (i = 0; ngx_http_core_default_types[i].key.len; i++) { + type = ngx_array_push(conf->types); + if (type == NULL) { + return NGX_CONF_ERROR; + } + + type->key = ngx_http_core_default_types[i].key; + type->key_hash = + ngx_hash_key_lc(ngx_http_core_default_types[i].key.data, + ngx_http_core_default_types[i].key.len); + type->value = ngx_http_core_default_types[i].value; + } + } + + if (conf->types_hash.buckets == NULL) { + + types_hash.hash = &conf->types_hash; + types_hash.key = ngx_hash_key_lc; + types_hash.max_size = conf->types_hash_max_size; + types_hash.bucket_size = conf->types_hash_bucket_size; + types_hash.name = "types_hash"; + types_hash.pool = cf->pool; + types_hash.temp_pool = NULL; + + if (ngx_hash_init(&types_hash, conf->types->elts, conf->types->nelts) + != NGX_OK) + { + return NGX_CONF_ERROR; + } + } + + if (conf->error_log == NULL) { + if (prev->error_log) { + conf->error_log = prev->error_log; + } else { + conf->error_log = &cf->cycle->new_log; + } + } + + if (conf->error_pages == NULL && prev->error_pages) { + conf->error_pages = prev->error_pages; + } + + ngx_conf_merge_str_value(conf->default_type, + prev->default_type, "text/plain"); + + ngx_conf_merge_off_value(conf->client_max_body_size, + prev->client_max_body_size, 1 * 1024 * 1024); + ngx_conf_merge_size_value(conf->client_body_buffer_size, + prev->client_body_buffer_size, + (size_t) 2 * ngx_pagesize); + ngx_conf_merge_msec_value(conf->client_body_timeout, + prev->client_body_timeout, 60000); + + ngx_conf_merge_bitmask_value(conf->keepalive_disable, + prev->keepalive_disable, + (NGX_CONF_BITMASK_SET + |NGX_HTTP_KEEPALIVE_DISABLE_MSIE6)); + ngx_conf_merge_uint_value(conf->satisfy, prev->satisfy, + NGX_HTTP_SATISFY_ALL); + ngx_conf_merge_uint_value(conf->if_modified_since, prev->if_modified_since, + NGX_HTTP_IMS_EXACT); + ngx_conf_merge_uint_value(conf->max_ranges, prev->max_ranges, + NGX_MAX_INT32_VALUE); + ngx_conf_merge_uint_value(conf->client_body_in_file_only, + prev->client_body_in_file_only, + NGX_HTTP_REQUEST_BODY_FILE_OFF); + ngx_conf_merge_value(conf->client_body_in_single_buffer, + prev->client_body_in_single_buffer, 0); + ngx_conf_merge_value(conf->internal, prev->internal, 0); + ngx_conf_merge_value(conf->sendfile, prev->sendfile, 0); + ngx_conf_merge_size_value(conf->sendfile_max_chunk, + prev->sendfile_max_chunk, 0); + ngx_conf_merge_value(conf->aio, prev->aio, NGX_HTTP_AIO_OFF); + ngx_conf_merge_value(conf->aio_write, prev->aio_write, 0); +#if (NGX_THREADS) + ngx_conf_merge_ptr_value(conf->thread_pool, prev->thread_pool, NULL); + ngx_conf_merge_ptr_value(conf->thread_pool_value, prev->thread_pool_value, + NULL); +#endif + ngx_conf_merge_size_value(conf->read_ahead, prev->read_ahead, 0); + ngx_conf_merge_off_value(conf->directio, prev->directio, + NGX_OPEN_FILE_DIRECTIO_OFF); + ngx_conf_merge_off_value(conf->directio_alignment, prev->directio_alignment, + 512); + ngx_conf_merge_value(conf->tcp_nopush, prev->tcp_nopush, 0); + ngx_conf_merge_value(conf->tcp_nodelay, prev->tcp_nodelay, 1); + + ngx_conf_merge_msec_value(conf->send_timeout, prev->send_timeout, 60000); + ngx_conf_merge_size_value(conf->send_lowat, prev->send_lowat, 0); + ngx_conf_merge_size_value(conf->postpone_output, prev->postpone_output, + 1460); + ngx_conf_merge_size_value(conf->limit_rate, prev->limit_rate, 0); + ngx_conf_merge_size_value(conf->limit_rate_after, prev->limit_rate_after, + 0); + ngx_conf_merge_msec_value(conf->keepalive_timeout, + prev->keepalive_timeout, 75000); + ngx_conf_merge_sec_value(conf->keepalive_header, + prev->keepalive_header, 0); + ngx_conf_merge_uint_value(conf->keepalive_requests, + prev->keepalive_requests, 100); + ngx_conf_merge_uint_value(conf->lingering_close, + prev->lingering_close, NGX_HTTP_LINGERING_ON); + ngx_conf_merge_msec_value(conf->lingering_time, + prev->lingering_time, 30000); + ngx_conf_merge_msec_value(conf->lingering_timeout, + prev->lingering_timeout, 5000); + ngx_conf_merge_msec_value(conf->resolver_timeout, + prev->resolver_timeout, 30000); + + if (conf->resolver == NULL) { + + if (prev->resolver == NULL) { + + /* + * create dummy resolver in http {} context + * to inherit it in all servers + */ + + prev->resolver = ngx_resolver_create(cf, NULL, 0); + if (prev->resolver == NULL) { + return NGX_CONF_ERROR; + } + } + + conf->resolver = prev->resolver; + } + + if (ngx_conf_merge_path_value(cf, &conf->client_body_temp_path, + prev->client_body_temp_path, + &ngx_http_client_temp_path) + != NGX_OK) + { + return NGX_CONF_ERROR; + } + + ngx_conf_merge_value(conf->reset_timedout_connection, + prev->reset_timedout_connection, 0); + ngx_conf_merge_value(conf->absolute_redirect, + prev->absolute_redirect, 1); + ngx_conf_merge_value(conf->server_name_in_redirect, + prev->server_name_in_redirect, 0); + ngx_conf_merge_value(conf->port_in_redirect, prev->port_in_redirect, 1); + ngx_conf_merge_value(conf->msie_padding, prev->msie_padding, 1); + ngx_conf_merge_value(conf->msie_refresh, prev->msie_refresh, 0); + ngx_conf_merge_value(conf->log_not_found, prev->log_not_found, 1); + ngx_conf_merge_value(conf->log_subrequest, prev->log_subrequest, 0); + ngx_conf_merge_value(conf->recursive_error_pages, + prev->recursive_error_pages, 0); + ngx_conf_merge_value(conf->chunked_transfer_encoding, + prev->chunked_transfer_encoding, 1); + ngx_conf_merge_value(conf->etag, prev->etag, 1); + + ngx_conf_merge_uint_value(conf->server_tokens, prev->server_tokens, + NGX_HTTP_SERVER_TOKENS_ON); + + ngx_conf_merge_ptr_value(conf->open_file_cache, + prev->open_file_cache, NULL); + + ngx_conf_merge_sec_value(conf->open_file_cache_valid, + prev->open_file_cache_valid, 60); + + ngx_conf_merge_uint_value(conf->open_file_cache_min_uses, + prev->open_file_cache_min_uses, 1); + + ngx_conf_merge_sec_value(conf->open_file_cache_errors, + prev->open_file_cache_errors, 0); + + ngx_conf_merge_sec_value(conf->open_file_cache_events, + prev->open_file_cache_events, 0); +#if (NGX_HTTP_GZIP) + + ngx_conf_merge_value(conf->gzip_vary, prev->gzip_vary, 0); + ngx_conf_merge_uint_value(conf->gzip_http_version, prev->gzip_http_version, + NGX_HTTP_VERSION_11); + ngx_conf_merge_bitmask_value(conf->gzip_proxied, prev->gzip_proxied, + (NGX_CONF_BITMASK_SET|NGX_HTTP_GZIP_PROXIED_OFF)); + +#if (NGX_PCRE) + ngx_conf_merge_ptr_value(conf->gzip_disable, prev->gzip_disable, NULL); +#endif + + if (conf->gzip_disable_msie6 == 3) { + conf->gzip_disable_msie6 = + (prev->gzip_disable_msie6 == 3) ? 0 : prev->gzip_disable_msie6; + } + +#if (NGX_HTTP_DEGRADATION) + + if (conf->gzip_disable_degradation == 3) { + conf->gzip_disable_degradation = + (prev->gzip_disable_degradation == 3) ? + 0 : prev->gzip_disable_degradation; + } + +#endif +#endif + +#if (NGX_HAVE_OPENAT) + ngx_conf_merge_uint_value(conf->disable_symlinks, prev->disable_symlinks, + NGX_DISABLE_SYMLINKS_OFF); + ngx_conf_merge_ptr_value(conf->disable_symlinks_from, + prev->disable_symlinks_from, NULL); +#endif + + return NGX_CONF_OK; +} + + +static char * +ngx_http_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_srv_conf_t *cscf = conf; + + ngx_str_t *value, size; + ngx_url_t u; + ngx_uint_t n; + ngx_http_listen_opt_t lsopt; + + cscf->listen = 1; + + value = cf->args->elts; + + ngx_memzero(&u, sizeof(ngx_url_t)); + + u.url = value[1]; + u.listen = 1; + u.default_port = 80; + + if (ngx_parse_url(cf->pool, &u) != NGX_OK) { + if (u.err) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "%s in \"%V\" of the \"listen\" directive", + u.err, &u.url); + } + + return NGX_CONF_ERROR; + } + + ngx_memzero(&lsopt, sizeof(ngx_http_listen_opt_t)); + + ngx_memcpy(&lsopt.sockaddr.sockaddr, &u.sockaddr, u.socklen); + + lsopt.socklen = u.socklen; + lsopt.backlog = NGX_LISTEN_BACKLOG; + lsopt.rcvbuf = -1; + lsopt.sndbuf = -1; +#if (NGX_HAVE_SETFIB) + lsopt.setfib = -1; +#endif +#if (NGX_HAVE_TCP_FASTOPEN) + lsopt.fastopen = -1; +#endif + lsopt.wildcard = u.wildcard; +#if (NGX_HAVE_INET6) + lsopt.ipv6only = 1; +#endif + + (void) ngx_sock_ntop(&lsopt.sockaddr.sockaddr, lsopt.socklen, lsopt.addr, + NGX_SOCKADDR_STRLEN, 1); + + for (n = 2; n < cf->args->nelts; n++) { + + if (ngx_strcmp(value[n].data, "default_server") == 0 + || ngx_strcmp(value[n].data, "default") == 0) + { + lsopt.default_server = 1; + continue; + } + + if (ngx_strcmp(value[n].data, "bind") == 0) { + lsopt.set = 1; + lsopt.bind = 1; + continue; + } + +#if (NGX_HAVE_SETFIB) + if (ngx_strncmp(value[n].data, "setfib=", 7) == 0) { + lsopt.setfib = ngx_atoi(value[n].data + 7, value[n].len - 7); + lsopt.set = 1; + lsopt.bind = 1; + + if (lsopt.setfib == NGX_ERROR) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid setfib \"%V\"", &value[n]); + return NGX_CONF_ERROR; + } + + continue; + } +#endif + +#if (NGX_HAVE_TCP_FASTOPEN) + if (ngx_strncmp(value[n].data, "fastopen=", 9) == 0) { + lsopt.fastopen = ngx_atoi(value[n].data + 9, value[n].len - 9); + lsopt.set = 1; + lsopt.bind = 1; + + if (lsopt.fastopen == NGX_ERROR) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid fastopen \"%V\"", &value[n]); + return NGX_CONF_ERROR; + } + + continue; + } +#endif + + if (ngx_strncmp(value[n].data, "backlog=", 8) == 0) { + lsopt.backlog = ngx_atoi(value[n].data + 8, value[n].len - 8); + lsopt.set = 1; + lsopt.bind = 1; + + if (lsopt.backlog == NGX_ERROR || lsopt.backlog == 0) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid backlog \"%V\"", &value[n]); + return NGX_CONF_ERROR; + } + + continue; + } + + if (ngx_strncmp(value[n].data, "rcvbuf=", 7) == 0) { + size.len = value[n].len - 7; + size.data = value[n].data + 7; + + lsopt.rcvbuf = ngx_parse_size(&size); + lsopt.set = 1; + lsopt.bind = 1; + + if (lsopt.rcvbuf == NGX_ERROR) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid rcvbuf \"%V\"", &value[n]); + return NGX_CONF_ERROR; + } + + continue; + } + + if (ngx_strncmp(value[n].data, "sndbuf=", 7) == 0) { + size.len = value[n].len - 7; + size.data = value[n].data + 7; + + lsopt.sndbuf = ngx_parse_size(&size); + lsopt.set = 1; + lsopt.bind = 1; + + if (lsopt.sndbuf == NGX_ERROR) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid sndbuf \"%V\"", &value[n]); + return NGX_CONF_ERROR; + } + + continue; + } + + if (ngx_strncmp(value[n].data, "accept_filter=", 14) == 0) { +#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER) + lsopt.accept_filter = (char *) &value[n].data[14]; + lsopt.set = 1; + lsopt.bind = 1; +#else + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "accept filters \"%V\" are not supported " + "on this platform, ignored", + &value[n]); +#endif + continue; + } + + if (ngx_strcmp(value[n].data, "deferred") == 0) { +#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT) + lsopt.deferred_accept = 1; + lsopt.set = 1; + lsopt.bind = 1; +#else + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the deferred accept is not supported " + "on this platform, ignored"); +#endif + continue; + } + + if (ngx_strncmp(value[n].data, "ipv6only=o", 10) == 0) { +#if (NGX_HAVE_INET6 && defined IPV6_V6ONLY) + struct sockaddr *sa; + + sa = &lsopt.sockaddr.sockaddr; + + if (sa->sa_family == AF_INET6) { + + if (ngx_strcmp(&value[n].data[10], "n") == 0) { + lsopt.ipv6only = 1; + + } else if (ngx_strcmp(&value[n].data[10], "ff") == 0) { + lsopt.ipv6only = 0; + + } else { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid ipv6only flags \"%s\"", + &value[n].data[9]); + return NGX_CONF_ERROR; + } + + lsopt.set = 1; + lsopt.bind = 1; + + } else { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "ipv6only is not supported " + "on addr \"%s\", ignored", lsopt.addr); + } + + continue; +#else + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "ipv6only is not supported " + "on this platform"); + return NGX_CONF_ERROR; +#endif + } + + if (ngx_strcmp(value[n].data, "reuseport") == 0) { +#if (NGX_HAVE_REUSEPORT) + lsopt.reuseport = 1; + lsopt.set = 1; + lsopt.bind = 1; +#else + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "reuseport is not supported " + "on this platform, ignored"); +#endif + continue; + } + + if (ngx_strcmp(value[n].data, "ssl") == 0) { +#if (NGX_HTTP_SSL) + lsopt.ssl = 1; + continue; +#else + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the \"ssl\" parameter requires " + "ngx_http_ssl_module"); + return NGX_CONF_ERROR; +#endif + } + + if (ngx_strcmp(value[n].data, "http2") == 0) { +#if (NGX_HTTP_V2) + lsopt.http2 = 1; + continue; +#else + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the \"http2\" parameter requires " + "ngx_http_v2_module"); + return NGX_CONF_ERROR; +#endif + } + + if (ngx_strcmp(value[n].data, "spdy") == 0) { + ngx_conf_log_error(NGX_LOG_WARN, cf, 0, + "invalid parameter \"spdy\": " + "ngx_http_spdy_module was superseded " + "by ngx_http_v2_module"); + continue; + } + + if (ngx_strncmp(value[n].data, "so_keepalive=", 13) == 0) { + + if (ngx_strcmp(&value[n].data[13], "on") == 0) { + lsopt.so_keepalive = 1; + + } else if (ngx_strcmp(&value[n].data[13], "off") == 0) { + lsopt.so_keepalive = 2; + + } else { + +#if (NGX_HAVE_KEEPALIVE_TUNABLE) + u_char *p, *end; + ngx_str_t s; + + end = value[n].data + value[n].len; + s.data = value[n].data + 13; + + p = ngx_strlchr(s.data, end, ':'); + if (p == NULL) { + p = end; + } + + if (p > s.data) { + s.len = p - s.data; + + lsopt.tcp_keepidle = ngx_parse_time(&s, 1); + if (lsopt.tcp_keepidle == (time_t) NGX_ERROR) { + goto invalid_so_keepalive; + } + } + + s.data = (p < end) ? (p + 1) : end; + + p = ngx_strlchr(s.data, end, ':'); + if (p == NULL) { + p = end; + } + + if (p > s.data) { + s.len = p - s.data; + + lsopt.tcp_keepintvl = ngx_parse_time(&s, 1); + if (lsopt.tcp_keepintvl == (time_t) NGX_ERROR) { + goto invalid_so_keepalive; + } + } + + s.data = (p < end) ? (p + 1) : end; + + if (s.data < end) { + s.len = end - s.data; + + lsopt.tcp_keepcnt = ngx_atoi(s.data, s.len); + if (lsopt.tcp_keepcnt == NGX_ERROR) { + goto invalid_so_keepalive; + } + } + + if (lsopt.tcp_keepidle == 0 && lsopt.tcp_keepintvl == 0 + && lsopt.tcp_keepcnt == 0) + { + goto invalid_so_keepalive; + } + + lsopt.so_keepalive = 1; + +#else + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the \"so_keepalive\" parameter accepts " + "only \"on\" or \"off\" on this platform"); + return NGX_CONF_ERROR; + +#endif + } + + lsopt.set = 1; + lsopt.bind = 1; + + continue; + +#if (NGX_HAVE_KEEPALIVE_TUNABLE) + invalid_so_keepalive: + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid so_keepalive value: \"%s\"", + &value[n].data[13]); + return NGX_CONF_ERROR; +#endif + } + + if (ngx_strcmp(value[n].data, "proxy_protocol") == 0) { + lsopt.proxy_protocol = 1; + continue; + } + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid parameter \"%V\"", &value[n]); + return NGX_CONF_ERROR; + } + + if (ngx_http_add_listen(cf, cscf, &lsopt) == NGX_OK) { + return NGX_CONF_OK; + } + + return NGX_CONF_ERROR; +} + + +static char * +ngx_http_core_server_name(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_srv_conf_t *cscf = conf; + + u_char ch; + ngx_str_t *value; + ngx_uint_t i; + ngx_http_server_name_t *sn; + + value = cf->args->elts; + + for (i = 1; i < cf->args->nelts; i++) { + + ch = value[i].data[0]; + + if ((ch == '*' && (value[i].len < 3 || value[i].data[1] != '.')) + || (ch == '.' && value[i].len < 2)) + { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "server name \"%V\" is invalid", &value[i]); + return NGX_CONF_ERROR; + } + + if (ngx_strchr(value[i].data, '/')) { + ngx_conf_log_error(NGX_LOG_WARN, cf, 0, + "server name \"%V\" has suspicious symbols", + &value[i]); + } + + sn = ngx_array_push(&cscf->server_names); + if (sn == NULL) { + return NGX_CONF_ERROR; + } + +#if (NGX_PCRE) + sn->regex = NULL; +#endif + sn->server = cscf; + + if (ngx_strcasecmp(value[i].data, (u_char *) "$hostname") == 0) { + sn->name = cf->cycle->hostname; + + } else { + sn->name = value[i]; + } + + if (value[i].data[0] != '~') { + ngx_strlow(sn->name.data, sn->name.data, sn->name.len); + continue; + } + +#if (NGX_PCRE) + { + u_char *p; + ngx_regex_compile_t rc; + u_char errstr[NGX_MAX_CONF_ERRSTR]; + + if (value[i].len == 1) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "empty regex in server name \"%V\"", &value[i]); + return NGX_CONF_ERROR; + } + + value[i].len--; + value[i].data++; + + ngx_memzero(&rc, sizeof(ngx_regex_compile_t)); + + rc.pattern = value[i]; + rc.err.len = NGX_MAX_CONF_ERRSTR; + rc.err.data = errstr; + + for (p = value[i].data; p < value[i].data + value[i].len; p++) { + if (*p >= 'A' && *p <= 'Z') { + rc.options = NGX_REGEX_CASELESS; + break; + } + } + + sn->regex = ngx_http_regex_compile(cf, &rc); + if (sn->regex == NULL) { + return NGX_CONF_ERROR; + } + + sn->name = value[i]; + cscf->captures = (rc.captures > 0); + } +#else + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "using regex \"%V\" " + "requires PCRE library", &value[i]); + + return NGX_CONF_ERROR; +#endif + } + + return NGX_CONF_OK; +} + + +static char * +ngx_http_core_root(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + + ngx_str_t *value; + ngx_int_t alias; + ngx_uint_t n; + ngx_http_script_compile_t sc; + + alias = (cmd->name.len == sizeof("alias") - 1) ? 1 : 0; + + if (clcf->root.data) { + + if ((clcf->alias != 0) == alias) { + return "is duplicate"; + } + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "\"%V\" directive is duplicate, " + "\"%s\" directive was specified earlier", + &cmd->name, clcf->alias ? "alias" : "root"); + + return NGX_CONF_ERROR; + } + + if (clcf->named && alias) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the \"alias\" directive cannot be used " + "inside the named location"); + + return NGX_CONF_ERROR; + } + + value = cf->args->elts; + + if (ngx_strstr(value[1].data, "$document_root") + || ngx_strstr(value[1].data, "${document_root}")) + { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the $document_root variable cannot be used " + "in the \"%V\" directive", + &cmd->name); + + return NGX_CONF_ERROR; + } + + if (ngx_strstr(value[1].data, "$realpath_root") + || ngx_strstr(value[1].data, "${realpath_root}")) + { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the $realpath_root variable cannot be used " + "in the \"%V\" directive", + &cmd->name); + + return NGX_CONF_ERROR; + } + + clcf->alias = alias ? clcf->name.len : 0; + clcf->root = value[1]; + + if (!alias && clcf->root.len > 0 + && clcf->root.data[clcf->root.len - 1] == '/') + { + clcf->root.len--; + } + + if (clcf->root.data[0] != '$') { + if (ngx_conf_full_name(cf->cycle, &clcf->root, 0) != NGX_OK) { + return NGX_CONF_ERROR; + } + } + + n = ngx_http_script_variables_count(&clcf->root); + + ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); + sc.variables = n; + +#if (NGX_PCRE) + if (alias && clcf->regex) { + clcf->alias = NGX_MAX_SIZE_T_VALUE; + n = 1; + } +#endif + + if (n) { + sc.cf = cf; + sc.source = &clcf->root; + sc.lengths = &clcf->root_lengths; + sc.values = &clcf->root_values; + sc.complete_lengths = 1; + sc.complete_values = 1; + + if (ngx_http_script_compile(&sc) != NGX_OK) { + return NGX_CONF_ERROR; + } + } + + return NGX_CONF_OK; +} + + +static ngx_http_method_name_t ngx_methods_names[] = { + { (u_char *) "GET", (uint32_t) ~NGX_HTTP_GET }, + { (u_char *) "HEAD", (uint32_t) ~NGX_HTTP_HEAD }, + { (u_char *) "POST", (uint32_t) ~NGX_HTTP_POST }, + { (u_char *) "PUT", (uint32_t) ~NGX_HTTP_PUT }, + { (u_char *) "DELETE", (uint32_t) ~NGX_HTTP_DELETE }, + { (u_char *) "MKCOL", (uint32_t) ~NGX_HTTP_MKCOL }, + { (u_char *) "COPY", (uint32_t) ~NGX_HTTP_COPY }, + { (u_char *) "MOVE", (uint32_t) ~NGX_HTTP_MOVE }, + { (u_char *) "OPTIONS", (uint32_t) ~NGX_HTTP_OPTIONS }, + { (u_char *) "PROPFIND", (uint32_t) ~NGX_HTTP_PROPFIND }, + { (u_char *) "PROPPATCH", (uint32_t) ~NGX_HTTP_PROPPATCH }, + { (u_char *) "LOCK", (uint32_t) ~NGX_HTTP_LOCK }, + { (u_char *) "UNLOCK", (uint32_t) ~NGX_HTTP_UNLOCK }, + { (u_char *) "PATCH", (uint32_t) ~NGX_HTTP_PATCH }, + { NULL, 0 } +}; + + +static char * +ngx_http_core_limit_except(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *pclcf = conf; + + char *rv; + void *mconf; + ngx_str_t *value; + ngx_uint_t i; + ngx_conf_t save; + ngx_http_module_t *module; + ngx_http_conf_ctx_t *ctx, *pctx; + ngx_http_method_name_t *name; + ngx_http_core_loc_conf_t *clcf; + + if (pclcf->limit_except) { + return "is duplicate"; + } + + pclcf->limit_except = 0xffffffff; + + value = cf->args->elts; + + for (i = 1; i < cf->args->nelts; i++) { + for (name = ngx_methods_names; name->name; name++) { + + if (ngx_strcasecmp(value[i].data, name->name) == 0) { + pclcf->limit_except &= name->method; + goto next; + } + } + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid method \"%V\"", &value[i]); + return NGX_CONF_ERROR; + + next: + continue; + } + + if (!(pclcf->limit_except & NGX_HTTP_GET)) { + pclcf->limit_except &= (uint32_t) ~NGX_HTTP_HEAD; + } + + ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); + if (ctx == NULL) { + return NGX_CONF_ERROR; + } + + pctx = cf->ctx; + ctx->main_conf = pctx->main_conf; + ctx->srv_conf = pctx->srv_conf; + + ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); + if (ctx->loc_conf == NULL) { + return NGX_CONF_ERROR; + } + + for (i = 0; cf->cycle->modules[i]; i++) { + if (cf->cycle->modules[i]->type != NGX_HTTP_MODULE) { + continue; + } + + module = cf->cycle->modules[i]->ctx; + + if (module->create_loc_conf) { + + mconf = module->create_loc_conf(cf); + if (mconf == NULL) { + return NGX_CONF_ERROR; + } + + ctx->loc_conf[cf->cycle->modules[i]->ctx_index] = mconf; + } + } + + + clcf = ctx->loc_conf[ngx_http_core_module.ctx_index]; + pclcf->limit_except_loc_conf = ctx->loc_conf; + clcf->loc_conf = ctx->loc_conf; + clcf->name = pclcf->name; + clcf->noname = 1; + clcf->lmt_excpt = 1; + + if (ngx_http_add_location(cf, &pclcf->locations, clcf) != NGX_OK) { + return NGX_CONF_ERROR; + } + + save = *cf; + cf->ctx = ctx; + cf->cmd_type = NGX_HTTP_LMT_CONF; + + rv = ngx_conf_parse(cf, NULL); + + *cf = save; + + return rv; +} + + +static char * +ngx_http_core_set_aio(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + + ngx_str_t *value; + + if (clcf->aio != NGX_CONF_UNSET) { + return "is duplicate"; + } + +#if (NGX_THREADS) + clcf->thread_pool = NULL; + clcf->thread_pool_value = NULL; +#endif + + value = cf->args->elts; + + if (ngx_strcmp(value[1].data, "off") == 0) { + clcf->aio = NGX_HTTP_AIO_OFF; + return NGX_CONF_OK; + } + + if (ngx_strcmp(value[1].data, "on") == 0) { +#if (NGX_HAVE_FILE_AIO) + clcf->aio = NGX_HTTP_AIO_ON; + return NGX_CONF_OK; +#else + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "\"aio on\" " + "is unsupported on this platform"); + return NGX_CONF_ERROR; +#endif + } + +#if (NGX_HAVE_AIO_SENDFILE) + + if (ngx_strcmp(value[1].data, "sendfile") == 0) { + clcf->aio = NGX_HTTP_AIO_ON; + + ngx_conf_log_error(NGX_LOG_WARN, cf, 0, + "the \"sendfile\" parameter of " + "the \"aio\" directive is deprecated"); + return NGX_CONF_OK; + } + +#endif + + if (ngx_strncmp(value[1].data, "threads", 7) == 0 + && (value[1].len == 7 || value[1].data[7] == '=')) + { +#if (NGX_THREADS) + ngx_str_t name; + ngx_thread_pool_t *tp; + ngx_http_complex_value_t cv; + ngx_http_compile_complex_value_t ccv; + + clcf->aio = NGX_HTTP_AIO_THREADS; + + if (value[1].len >= 8) { + name.len = value[1].len - 8; + name.data = value[1].data + 8; + + ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); + + ccv.cf = cf; + ccv.value = &name; + ccv.complex_value = &cv; + + if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { + return NGX_CONF_ERROR; + } + + if (cv.lengths != NULL) { + clcf->thread_pool_value = ngx_palloc(cf->pool, + sizeof(ngx_http_complex_value_t)); + if (clcf->thread_pool_value == NULL) { + return NGX_CONF_ERROR; + } + + *clcf->thread_pool_value = cv; + + return NGX_CONF_OK; + } + + tp = ngx_thread_pool_add(cf, &name); + + } else { + tp = ngx_thread_pool_add(cf, NULL); + } + + if (tp == NULL) { + return NGX_CONF_ERROR; + } + + clcf->thread_pool = tp; + + return NGX_CONF_OK; +#else + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "\"aio threads\" " + "is unsupported on this platform"); + return NGX_CONF_ERROR; +#endif + } + + return "invalid value"; +} + + +static char * +ngx_http_core_directio(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + + ngx_str_t *value; + + if (clcf->directio != NGX_CONF_UNSET) { + return "is duplicate"; + } + + value = cf->args->elts; + + if (ngx_strcmp(value[1].data, "off") == 0) { + clcf->directio = NGX_OPEN_FILE_DIRECTIO_OFF; + return NGX_CONF_OK; + } + + clcf->directio = ngx_parse_offset(&value[1]); + if (clcf->directio == (off_t) NGX_ERROR) { + return "invalid value"; + } + + return NGX_CONF_OK; +} + + +static char * +ngx_http_core_error_page(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + + u_char *p; + ngx_int_t overwrite; + ngx_str_t *value, uri, args; + ngx_uint_t i, n; + ngx_http_err_page_t *err; + ngx_http_complex_value_t cv; + ngx_http_compile_complex_value_t ccv; + + if (clcf->error_pages == NULL) { + clcf->error_pages = ngx_array_create(cf->pool, 4, + sizeof(ngx_http_err_page_t)); + if (clcf->error_pages == NULL) { + return NGX_CONF_ERROR; + } + } + + value = cf->args->elts; + + i = cf->args->nelts - 2; + + if (value[i].data[0] == '=') { + if (i == 1) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid value \"%V\"", &value[i]); + return NGX_CONF_ERROR; + } + + if (value[i].len > 1) { + overwrite = ngx_atoi(&value[i].data[1], value[i].len - 1); + + if (overwrite == NGX_ERROR) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid value \"%V\"", &value[i]); + return NGX_CONF_ERROR; + } + + } else { + overwrite = 0; + } + + n = 2; + + } else { + overwrite = -1; + n = 1; + } + + uri = value[cf->args->nelts - 1]; + + ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); + + ccv.cf = cf; + ccv.value = &uri; + ccv.complex_value = &cv; + + if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { + return NGX_CONF_ERROR; + } + + ngx_str_null(&args); + + if (cv.lengths == NULL && uri.len && uri.data[0] == '/') { + p = (u_char *) ngx_strchr(uri.data, '?'); + + if (p) { + cv.value.len = p - uri.data; + cv.value.data = uri.data; + p++; + args.len = (uri.data + uri.len) - p; + args.data = p; + } + } + + for (i = 1; i < cf->args->nelts - n; i++) { + err = ngx_array_push(clcf->error_pages); + if (err == NULL) { + return NGX_CONF_ERROR; + } + + err->status = ngx_atoi(value[i].data, value[i].len); + + if (err->status == NGX_ERROR || err->status == 499) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid value \"%V\"", &value[i]); + return NGX_CONF_ERROR; + } + + if (err->status < 300 || err->status > 599) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "value \"%V\" must be between 300 and 599", + &value[i]); + return NGX_CONF_ERROR; + } + + err->overwrite = overwrite; + + if (overwrite == -1) { + switch (err->status) { + case NGX_HTTP_TO_HTTPS: + case NGX_HTTPS_CERT_ERROR: + case NGX_HTTPS_NO_CERT: + err->overwrite = NGX_HTTP_BAD_REQUEST; + } + } + + err->value = cv; + err->args = args; + } + + return NGX_CONF_OK; +} + + +static char * +ngx_http_core_try_files(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + + ngx_str_t *value; + ngx_int_t code; + ngx_uint_t i, n; + ngx_http_try_file_t *tf; + ngx_http_script_compile_t sc; + ngx_http_core_main_conf_t *cmcf; + + if (clcf->try_files) { + return "is duplicate"; + } + + cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); + + cmcf->try_files = 1; + + tf = ngx_pcalloc(cf->pool, cf->args->nelts * sizeof(ngx_http_try_file_t)); + if (tf == NULL) { + return NGX_CONF_ERROR; + } + + clcf->try_files = tf; + + value = cf->args->elts; + + for (i = 0; i < cf->args->nelts - 1; i++) { + + tf[i].name = value[i + 1]; + + if (tf[i].name.len > 0 + && tf[i].name.data[tf[i].name.len - 1] == '/' + && i + 2 < cf->args->nelts) + { + tf[i].test_dir = 1; + tf[i].name.len--; + tf[i].name.data[tf[i].name.len] = '\0'; + } + + n = ngx_http_script_variables_count(&tf[i].name); + + if (n) { + ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); + + sc.cf = cf; + sc.source = &tf[i].name; + sc.lengths = &tf[i].lengths; + sc.values = &tf[i].values; + sc.variables = n; + sc.complete_lengths = 1; + sc.complete_values = 1; + + if (ngx_http_script_compile(&sc) != NGX_OK) { + return NGX_CONF_ERROR; + } + + } else { + /* add trailing '\0' to length */ + tf[i].name.len++; + } + } + + if (tf[i - 1].name.data[0] == '=') { + + code = ngx_atoi(tf[i - 1].name.data + 1, tf[i - 1].name.len - 2); + + if (code == NGX_ERROR || code > 999) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid code \"%*s\"", + tf[i - 1].name.len - 1, tf[i - 1].name.data); + return NGX_CONF_ERROR; + } + + tf[i].code = code; + } + + return NGX_CONF_OK; +} + + +static char * +ngx_http_core_open_file_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + + time_t inactive; + ngx_str_t *value, s; + ngx_int_t max; + ngx_uint_t i; + + if (clcf->open_file_cache != NGX_CONF_UNSET_PTR) { + return "is duplicate"; + } + + value = cf->args->elts; + + max = 0; + inactive = 60; + + for (i = 1; i < cf->args->nelts; i++) { + + if (ngx_strncmp(value[i].data, "max=", 4) == 0) { + + max = ngx_atoi(value[i].data + 4, value[i].len - 4); + if (max <= 0) { + goto failed; + } + + continue; + } + + if (ngx_strncmp(value[i].data, "inactive=", 9) == 0) { + + s.len = value[i].len - 9; + s.data = value[i].data + 9; + + inactive = ngx_parse_time(&s, 1); + if (inactive == (time_t) NGX_ERROR) { + goto failed; + } + + continue; + } + + if (ngx_strcmp(value[i].data, "off") == 0) { + + clcf->open_file_cache = NULL; + + continue; + } + + failed: + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid \"open_file_cache\" parameter \"%V\"", + &value[i]); + return NGX_CONF_ERROR; + } + + if (clcf->open_file_cache == NULL) { + return NGX_CONF_OK; + } + + if (max == 0) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "\"open_file_cache\" must have the \"max\" parameter"); + return NGX_CONF_ERROR; + } + + clcf->open_file_cache = ngx_open_file_cache_init(cf->pool, max, inactive); + if (clcf->open_file_cache) { + return NGX_CONF_OK; + } + + return NGX_CONF_ERROR; +} + + +static char * +ngx_http_core_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + + return ngx_log_set_log(cf, &clcf->error_log); +} + + +static char * +ngx_http_core_keepalive(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + + ngx_str_t *value; + + if (clcf->keepalive_timeout != NGX_CONF_UNSET_MSEC) { + return "is duplicate"; + } + + value = cf->args->elts; + + clcf->keepalive_timeout = ngx_parse_time(&value[1], 0); + + if (clcf->keepalive_timeout == (ngx_msec_t) NGX_ERROR) { + return "invalid value"; + } + + if (cf->args->nelts == 2) { + return NGX_CONF_OK; + } + + clcf->keepalive_header = ngx_parse_time(&value[2], 1); + + if (clcf->keepalive_header == (time_t) NGX_ERROR) { + return "invalid value"; + } + + return NGX_CONF_OK; +} + + +static char * +ngx_http_core_internal(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + + if (clcf->internal != NGX_CONF_UNSET) { + return "is duplicate"; + } + + clcf->internal = 1; + + return NGX_CONF_OK; +} + + +static char * +ngx_http_core_resolver(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + + ngx_str_t *value; + + if (clcf->resolver) { + return "is duplicate"; + } + + value = cf->args->elts; + + clcf->resolver = ngx_resolver_create(cf, &value[1], cf->args->nelts - 1); + if (clcf->resolver == NULL) { + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; +} + + +#if (NGX_HTTP_GZIP) + +static char * +ngx_http_gzip_disable(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + +#if (NGX_PCRE) + + ngx_str_t *value; + ngx_uint_t i; + ngx_regex_elt_t *re; + ngx_regex_compile_t rc; + u_char errstr[NGX_MAX_CONF_ERRSTR]; + + if (clcf->gzip_disable == NGX_CONF_UNSET_PTR) { + clcf->gzip_disable = ngx_array_create(cf->pool, 2, + sizeof(ngx_regex_elt_t)); + if (clcf->gzip_disable == NULL) { + return NGX_CONF_ERROR; + } + } + + value = cf->args->elts; + + ngx_memzero(&rc, sizeof(ngx_regex_compile_t)); + + rc.pool = cf->pool; + rc.err.len = NGX_MAX_CONF_ERRSTR; + rc.err.data = errstr; + + for (i = 1; i < cf->args->nelts; i++) { + + if (ngx_strcmp(value[i].data, "msie6") == 0) { + clcf->gzip_disable_msie6 = 1; + continue; + } + +#if (NGX_HTTP_DEGRADATION) + + if (ngx_strcmp(value[i].data, "degradation") == 0) { + clcf->gzip_disable_degradation = 1; + continue; + } + +#endif + + re = ngx_array_push(clcf->gzip_disable); + if (re == NULL) { + return NGX_CONF_ERROR; + } + + rc.pattern = value[i]; + rc.options = NGX_REGEX_CASELESS; + + if (ngx_regex_compile(&rc) != NGX_OK) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%V", &rc.err); + return NGX_CONF_ERROR; + } + + re->regex = rc.regex; + re->name = value[i].data; + } + + return NGX_CONF_OK; + +#else + ngx_str_t *value; + ngx_uint_t i; + + value = cf->args->elts; + + for (i = 1; i < cf->args->nelts; i++) { + if (ngx_strcmp(value[i].data, "msie6") == 0) { + clcf->gzip_disable_msie6 = 1; + continue; + } + +#if (NGX_HTTP_DEGRADATION) + + if (ngx_strcmp(value[i].data, "degradation") == 0) { + clcf->gzip_disable_degradation = 1; + continue; + } + +#endif + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "without PCRE library \"gzip_disable\" supports " + "builtin \"msie6\" and \"degradation\" mask only"); + + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; + +#endif +} + +#endif + + +#if (NGX_HAVE_OPENAT) + +static char * +ngx_http_disable_symlinks(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf = conf; + + ngx_str_t *value; + ngx_uint_t i; + ngx_http_compile_complex_value_t ccv; + + if (clcf->disable_symlinks != NGX_CONF_UNSET_UINT) { + return "is duplicate"; + } + + value = cf->args->elts; + + for (i = 1; i < cf->args->nelts; i++) { + + if (ngx_strcmp(value[i].data, "off") == 0) { + clcf->disable_symlinks = NGX_DISABLE_SYMLINKS_OFF; + continue; + } + + if (ngx_strcmp(value[i].data, "if_not_owner") == 0) { + clcf->disable_symlinks = NGX_DISABLE_SYMLINKS_NOTOWNER; + continue; + } + + if (ngx_strcmp(value[i].data, "on") == 0) { + clcf->disable_symlinks = NGX_DISABLE_SYMLINKS_ON; + continue; + } + + if (ngx_strncmp(value[i].data, "from=", 5) == 0) { + value[i].len -= 5; + value[i].data += 5; + + ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); + + ccv.cf = cf; + ccv.value = &value[i]; + ccv.complex_value = ngx_palloc(cf->pool, + sizeof(ngx_http_complex_value_t)); + if (ccv.complex_value == NULL) { + return NGX_CONF_ERROR; + } + + if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { + return NGX_CONF_ERROR; + } + + clcf->disable_symlinks_from = ccv.complex_value; + + continue; + } + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid parameter \"%V\"", &value[i]); + return NGX_CONF_ERROR; + } + + if (clcf->disable_symlinks == NGX_CONF_UNSET_UINT) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "\"%V\" must have \"off\", \"on\" " + "or \"if_not_owner\" parameter", + &cmd->name); + return NGX_CONF_ERROR; + } + + if (cf->args->nelts == 2) { + clcf->disable_symlinks_from = NULL; + return NGX_CONF_OK; + } + + if (clcf->disable_symlinks_from == NGX_CONF_UNSET_PTR) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "duplicate parameters \"%V %V\"", + &value[1], &value[2]); + return NGX_CONF_ERROR; + } + + if (clcf->disable_symlinks == NGX_DISABLE_SYMLINKS_OFF) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "\"from=\" cannot be used with \"off\" parameter"); + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; +} + +#endif + + +static char * +ngx_http_core_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, + "\"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, + "\"send_lowat\" is not supported, ignored"); + + *np = 0; + +#endif + + return NGX_CONF_OK; +} + + +static char * +ngx_http_core_pool_size(ngx_conf_t *cf, void *post, void *data) +{ + size_t *sp = data; + + if (*sp < NGX_MIN_POOL_SIZE) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the pool size must be no less than %uz", + NGX_MIN_POOL_SIZE); + return NGX_CONF_ERROR; + } + + if (*sp % NGX_POOL_ALIGNMENT) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the pool size must be a multiple of %uz", + NGX_POOL_ALIGNMENT); + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; +} |