blob: 5191880e3d16567f1f25108d785b50f2395808c8 [file] [log] [blame]
/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
typedef struct {
ngx_array_t caches; /* ngx_http_file_cache_t * */
} ngx_http_fastcgi_main_conf_t;
typedef struct {
ngx_array_t *flushes;
ngx_array_t *lengths;
ngx_array_t *values;
ngx_uint_t number;
ngx_hash_t hash;
} ngx_http_fastcgi_params_t;
typedef struct {
ngx_http_upstream_conf_t upstream;
ngx_str_t index;
ngx_http_fastcgi_params_t params;
#if (NGX_HTTP_CACHE)
ngx_http_fastcgi_params_t params_cache;
#endif
ngx_array_t *params_source;
ngx_array_t *catch_stderr;
ngx_array_t *fastcgi_lengths;
ngx_array_t *fastcgi_values;
ngx_flag_t keep_conn;
#if (NGX_HTTP_CACHE)
ngx_http_complex_value_t cache_key;
#endif
#if (NGX_PCRE)
ngx_regex_t *split_regex;
ngx_str_t split_name;
#endif
} ngx_http_fastcgi_loc_conf_t;
typedef enum {
ngx_http_fastcgi_st_version = 0,
ngx_http_fastcgi_st_type,
ngx_http_fastcgi_st_request_id_hi,
ngx_http_fastcgi_st_request_id_lo,
ngx_http_fastcgi_st_content_length_hi,
ngx_http_fastcgi_st_content_length_lo,
ngx_http_fastcgi_st_padding_length,
ngx_http_fastcgi_st_reserved,
ngx_http_fastcgi_st_data,
ngx_http_fastcgi_st_padding
} ngx_http_fastcgi_state_e;
typedef struct {
u_char *start;
u_char *end;
} ngx_http_fastcgi_split_part_t;
typedef struct {
ngx_http_fastcgi_state_e state;
u_char *pos;
u_char *last;
ngx_uint_t type;
size_t length;
size_t padding;
off_t rest;
ngx_chain_t *free;
ngx_chain_t *busy;
unsigned fastcgi_stdout:1;
unsigned large_stderr:1;
unsigned header_sent:1;
unsigned closed:1;
ngx_array_t *split_parts;
ngx_str_t script_name;
ngx_str_t path_info;
} ngx_http_fastcgi_ctx_t;
#define NGX_HTTP_FASTCGI_RESPONDER 1
#define NGX_HTTP_FASTCGI_KEEP_CONN 1
#define NGX_HTTP_FASTCGI_BEGIN_REQUEST 1
#define NGX_HTTP_FASTCGI_ABORT_REQUEST 2
#define NGX_HTTP_FASTCGI_END_REQUEST 3
#define NGX_HTTP_FASTCGI_PARAMS 4
#define NGX_HTTP_FASTCGI_STDIN 5
#define NGX_HTTP_FASTCGI_STDOUT 6
#define NGX_HTTP_FASTCGI_STDERR 7
#define NGX_HTTP_FASTCGI_DATA 8
typedef struct {
u_char version;
u_char type;
u_char request_id_hi;
u_char request_id_lo;
u_char content_length_hi;
u_char content_length_lo;
u_char padding_length;
u_char reserved;
} ngx_http_fastcgi_header_t;
typedef struct {
u_char role_hi;
u_char role_lo;
u_char flags;
u_char reserved[5];
} ngx_http_fastcgi_begin_request_t;
typedef struct {
u_char version;
u_char type;
u_char request_id_hi;
u_char request_id_lo;
} ngx_http_fastcgi_header_small_t;
typedef struct {
ngx_http_fastcgi_header_t h0;
ngx_http_fastcgi_begin_request_t br;
ngx_http_fastcgi_header_small_t h1;
} ngx_http_fastcgi_request_start_t;
static ngx_int_t ngx_http_fastcgi_eval(ngx_http_request_t *r,
ngx_http_fastcgi_loc_conf_t *flcf);
#if (NGX_HTTP_CACHE)
static ngx_int_t ngx_http_fastcgi_create_key(ngx_http_request_t *r);
#endif
static ngx_int_t ngx_http_fastcgi_create_request(ngx_http_request_t *r);
static ngx_int_t ngx_http_fastcgi_reinit_request(ngx_http_request_t *r);
static ngx_int_t ngx_http_fastcgi_body_output_filter(void *data,
ngx_chain_t *in);
static ngx_int_t ngx_http_fastcgi_process_header(ngx_http_request_t *r);
static ngx_int_t ngx_http_fastcgi_input_filter_init(void *data);
static ngx_int_t ngx_http_fastcgi_input_filter(ngx_event_pipe_t *p,
ngx_buf_t *buf);
static ngx_int_t ngx_http_fastcgi_non_buffered_filter(void *data,
ssize_t bytes);
static ngx_int_t ngx_http_fastcgi_process_record(ngx_http_request_t *r,
ngx_http_fastcgi_ctx_t *f);
static void ngx_http_fastcgi_abort_request(ngx_http_request_t *r);
static void ngx_http_fastcgi_finalize_request(ngx_http_request_t *r,
ngx_int_t rc);
static ngx_int_t ngx_http_fastcgi_add_variables(ngx_conf_t *cf);
static void *ngx_http_fastcgi_create_main_conf(ngx_conf_t *cf);
static void *ngx_http_fastcgi_create_loc_conf(ngx_conf_t *cf);
static char *ngx_http_fastcgi_merge_loc_conf(ngx_conf_t *cf,
void *parent, void *child);
static ngx_int_t ngx_http_fastcgi_init_params(ngx_conf_t *cf,
ngx_http_fastcgi_loc_conf_t *conf, ngx_http_fastcgi_params_t *params,
ngx_keyval_t *default_params);
static ngx_int_t ngx_http_fastcgi_script_name_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_fastcgi_path_info_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_http_fastcgi_ctx_t *ngx_http_fastcgi_split(ngx_http_request_t *r,
ngx_http_fastcgi_loc_conf_t *flcf);
static char *ngx_http_fastcgi_pass(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_http_fastcgi_split_path_info(ngx_conf_t *cf,
ngx_command_t *cmd, void *conf);
static char *ngx_http_fastcgi_store(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
#if (NGX_HTTP_CACHE)
static char *ngx_http_fastcgi_cache(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_http_fastcgi_cache_key(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
#endif
static char *ngx_http_fastcgi_lowat_check(ngx_conf_t *cf, void *post,
void *data);
static ngx_conf_post_t ngx_http_fastcgi_lowat_post =
{ ngx_http_fastcgi_lowat_check };
static ngx_conf_bitmask_t ngx_http_fastcgi_next_upstream_masks[] = {
{ ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR },
{ ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
{ ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
{ ngx_string("non_idempotent"), NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT },
{ ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 },
{ ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 },
{ ngx_string("http_403"), NGX_HTTP_UPSTREAM_FT_HTTP_403 },
{ ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
{ ngx_string("http_429"), NGX_HTTP_UPSTREAM_FT_HTTP_429 },
{ ngx_string("updating"), NGX_HTTP_UPSTREAM_FT_UPDATING },
{ ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF },
{ ngx_null_string, 0 }
};
ngx_module_t ngx_http_fastcgi_module;
static ngx_command_t ngx_http_fastcgi_commands[] = {
{ ngx_string("fastcgi_pass"),
NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
ngx_http_fastcgi_pass,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("fastcgi_index"),
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_fastcgi_loc_conf_t, index),
NULL },
{ ngx_string("fastcgi_split_path_info"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_fastcgi_split_path_info,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("fastcgi_store"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_fastcgi_store,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("fastcgi_store_access"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE123,
ngx_conf_set_access_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.store_access),
NULL },
{ ngx_string("fastcgi_buffering"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.buffering),
NULL },
{ ngx_string("fastcgi_request_buffering"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.request_buffering),
NULL },
{ ngx_string("fastcgi_ignore_client_abort"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.ignore_client_abort),
NULL },
{ ngx_string("fastcgi_bind"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12,
ngx_http_upstream_bind_set_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.local),
NULL },
{ ngx_string("fastcgi_socket_keepalive"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.socket_keepalive),
NULL },
{ ngx_string("fastcgi_connect_timeout"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.connect_timeout),
NULL },
{ ngx_string("fastcgi_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_fastcgi_loc_conf_t, upstream.send_timeout),
NULL },
{ ngx_string("fastcgi_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_fastcgi_loc_conf_t, upstream.send_lowat),
&ngx_http_fastcgi_lowat_post },
{ ngx_string("fastcgi_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_fastcgi_loc_conf_t, upstream.buffer_size),
NULL },
{ ngx_string("fastcgi_pass_request_headers"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.pass_request_headers),
NULL },
{ ngx_string("fastcgi_pass_request_body"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.pass_request_body),
NULL },
{ ngx_string("fastcgi_intercept_errors"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.intercept_errors),
NULL },
{ ngx_string("fastcgi_read_timeout"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.read_timeout),
NULL },
{ ngx_string("fastcgi_buffers"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
ngx_conf_set_bufs_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.bufs),
NULL },
{ ngx_string("fastcgi_busy_buffers_size"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.busy_buffers_size_conf),
NULL },
{ ngx_string("fastcgi_force_ranges"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.force_ranges),
NULL },
{ ngx_string("fastcgi_limit_rate"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.limit_rate),
NULL },
#if (NGX_HTTP_CACHE)
{ ngx_string("fastcgi_cache"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_fastcgi_cache,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("fastcgi_cache_key"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_fastcgi_cache_key,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("fastcgi_cache_path"),
NGX_HTTP_MAIN_CONF|NGX_CONF_2MORE,
ngx_http_file_cache_set_slot,
NGX_HTTP_MAIN_CONF_OFFSET,
offsetof(ngx_http_fastcgi_main_conf_t, caches),
&ngx_http_fastcgi_module },
{ ngx_string("fastcgi_cache_bypass"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_http_set_predicate_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_bypass),
NULL },
{ ngx_string("fastcgi_no_cache"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_http_set_predicate_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.no_cache),
NULL },
{ ngx_string("fastcgi_cache_valid"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_http_file_cache_valid_set_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_valid),
NULL },
{ ngx_string("fastcgi_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_fastcgi_loc_conf_t, upstream.cache_min_uses),
NULL },
{ ngx_string("fastcgi_cache_max_range_offset"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_off_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_max_range_offset),
NULL },
{ ngx_string("fastcgi_cache_use_stale"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_conf_set_bitmask_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_use_stale),
&ngx_http_fastcgi_next_upstream_masks },
{ ngx_string("fastcgi_cache_methods"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_conf_set_bitmask_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_methods),
&ngx_http_upstream_cache_method_mask },
{ ngx_string("fastcgi_cache_lock"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_lock),
NULL },
{ ngx_string("fastcgi_cache_lock_timeout"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_lock_timeout),
NULL },
{ ngx_string("fastcgi_cache_lock_age"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_lock_age),
NULL },
{ ngx_string("fastcgi_cache_revalidate"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_revalidate),
NULL },
{ ngx_string("fastcgi_cache_background_update"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_background_update),
NULL },
#endif
{ ngx_string("fastcgi_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_fastcgi_loc_conf_t, upstream.temp_path),
NULL },
{ ngx_string("fastcgi_max_temp_file_size"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.max_temp_file_size_conf),
NULL },
{ ngx_string("fastcgi_temp_file_write_size"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.temp_file_write_size_conf),
NULL },
{ ngx_string("fastcgi_next_upstream"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_conf_set_bitmask_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.next_upstream),
&ngx_http_fastcgi_next_upstream_masks },
{ ngx_string("fastcgi_next_upstream_tries"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_num_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.next_upstream_tries),
NULL },
{ ngx_string("fastcgi_next_upstream_timeout"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.next_upstream_timeout),
NULL },
{ ngx_string("fastcgi_param"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE23,
ngx_http_upstream_param_set_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, params_source),
NULL },
{ ngx_string("fastcgi_pass_header"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_array_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.pass_headers),
NULL },
{ ngx_string("fastcgi_hide_header"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_array_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.hide_headers),
NULL },
{ ngx_string("fastcgi_ignore_headers"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_conf_set_bitmask_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, upstream.ignore_headers),
&ngx_http_upstream_ignore_headers_masks },
{ ngx_string("fastcgi_catch_stderr"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_array_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, catch_stderr),
NULL },
{ ngx_string("fastcgi_keep_conn"),
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_fastcgi_loc_conf_t, keep_conn),
NULL },
ngx_null_command
};
static ngx_http_module_t ngx_http_fastcgi_module_ctx = {
ngx_http_fastcgi_add_variables, /* preconfiguration */
NULL, /* postconfiguration */
ngx_http_fastcgi_create_main_conf, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
ngx_http_fastcgi_create_loc_conf, /* create location configuration */
ngx_http_fastcgi_merge_loc_conf /* merge location configuration */
};
ngx_module_t ngx_http_fastcgi_module = {
NGX_MODULE_V1,
&ngx_http_fastcgi_module_ctx, /* module context */
ngx_http_fastcgi_commands, /* module directives */
NGX_HTTP_MODULE, /* module type */
NULL, /* init master */
NULL, /* init module */
NULL, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
NULL, /* exit master */
NGX_MODULE_V1_PADDING
};
static ngx_http_fastcgi_request_start_t ngx_http_fastcgi_request_start = {
{ 1, /* version */
NGX_HTTP_FASTCGI_BEGIN_REQUEST, /* type */
0, /* request_id_hi */
1, /* request_id_lo */
0, /* content_length_hi */
sizeof(ngx_http_fastcgi_begin_request_t), /* content_length_lo */
0, /* padding_length */
0 }, /* reserved */
{ 0, /* role_hi */
NGX_HTTP_FASTCGI_RESPONDER, /* role_lo */
0, /* NGX_HTTP_FASTCGI_KEEP_CONN */ /* flags */
{ 0, 0, 0, 0, 0 } }, /* reserved[5] */
{ 1, /* version */
NGX_HTTP_FASTCGI_PARAMS, /* type */
0, /* request_id_hi */
1 }, /* request_id_lo */
};
static ngx_http_variable_t ngx_http_fastcgi_vars[] = {
{ ngx_string("fastcgi_script_name"), NULL,
ngx_http_fastcgi_script_name_variable, 0,
NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
{ ngx_string("fastcgi_path_info"), NULL,
ngx_http_fastcgi_path_info_variable, 0,
NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
ngx_http_null_variable
};
static ngx_str_t ngx_http_fastcgi_hide_headers[] = {
ngx_string("Status"),
ngx_string("X-Accel-Expires"),
ngx_string("X-Accel-Redirect"),
ngx_string("X-Accel-Limit-Rate"),
ngx_string("X-Accel-Buffering"),
ngx_string("X-Accel-Charset"),
ngx_null_string
};
#if (NGX_HTTP_CACHE)
static ngx_keyval_t ngx_http_fastcgi_cache_headers[] = {
{ ngx_string("HTTP_IF_MODIFIED_SINCE"),
ngx_string("$upstream_cache_last_modified") },
{ ngx_string("HTTP_IF_UNMODIFIED_SINCE"), ngx_string("") },
{ ngx_string("HTTP_IF_NONE_MATCH"), ngx_string("$upstream_cache_etag") },
{ ngx_string("HTTP_IF_MATCH"), ngx_string("") },
{ ngx_string("HTTP_RANGE"), ngx_string("") },
{ ngx_string("HTTP_IF_RANGE"), ngx_string("") },
{ ngx_null_string, ngx_null_string }
};
#endif
static ngx_path_init_t ngx_http_fastcgi_temp_path = {
ngx_string(NGX_HTTP_FASTCGI_TEMP_PATH), { 1, 2, 0 }
};
static ngx_int_t
ngx_http_fastcgi_handler(ngx_http_request_t *r)
{
ngx_int_t rc;
ngx_http_upstream_t *u;
ngx_http_fastcgi_ctx_t *f;
ngx_http_fastcgi_loc_conf_t *flcf;
#if (NGX_HTTP_CACHE)
ngx_http_fastcgi_main_conf_t *fmcf;
#endif
if (ngx_http_upstream_create(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
f = ngx_pcalloc(r->pool, sizeof(ngx_http_fastcgi_ctx_t));
if (f == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_http_set_ctx(r, f, ngx_http_fastcgi_module);
flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
if (flcf->fastcgi_lengths) {
if (ngx_http_fastcgi_eval(r, flcf) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
}
u = r->upstream;
ngx_str_set(&u->schema, "fastcgi://");
u->output.tag = (ngx_buf_tag_t) &ngx_http_fastcgi_module;
u->conf = &flcf->upstream;
#if (NGX_HTTP_CACHE)
fmcf = ngx_http_get_module_main_conf(r, ngx_http_fastcgi_module);
u->caches = &fmcf->caches;
u->create_key = ngx_http_fastcgi_create_key;
#endif
u->create_request = ngx_http_fastcgi_create_request;
u->reinit_request = ngx_http_fastcgi_reinit_request;
u->process_header = ngx_http_fastcgi_process_header;
u->abort_request = ngx_http_fastcgi_abort_request;
u->finalize_request = ngx_http_fastcgi_finalize_request;
r->state = 0;
u->buffering = flcf->upstream.buffering;
u->pipe = ngx_pcalloc(r->pool, sizeof(ngx_event_pipe_t));
if (u->pipe == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
u->pipe->input_filter = ngx_http_fastcgi_input_filter;
u->pipe->input_ctx = r;
u->input_filter_init = ngx_http_fastcgi_input_filter_init;
u->input_filter = ngx_http_fastcgi_non_buffered_filter;
u->input_filter_ctx = r;
if (!flcf->upstream.request_buffering
&& flcf->upstream.pass_request_body)
{
r->request_body_no_buffering = 1;
}
rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init);
if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
return rc;
}
return NGX_DONE;
}
static ngx_int_t
ngx_http_fastcgi_eval(ngx_http_request_t *r, ngx_http_fastcgi_loc_conf_t *flcf)
{
ngx_url_t url;
ngx_http_upstream_t *u;
ngx_memzero(&url, sizeof(ngx_url_t));
if (ngx_http_script_run(r, &url.url, flcf->fastcgi_lengths->elts, 0,
flcf->fastcgi_values->elts)
== NULL)
{
return NGX_ERROR;
}
url.no_resolve = 1;
if (ngx_parse_url(r->pool, &url) != NGX_OK) {
if (url.err) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"%s in upstream \"%V\"", url.err, &url.url);
}
return NGX_ERROR;
}
u = r->upstream;
u->resolved = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_resolved_t));
if (u->resolved == NULL) {
return NGX_ERROR;
}
if (url.addrs) {
u->resolved->sockaddr = url.addrs[0].sockaddr;
u->resolved->socklen = url.addrs[0].socklen;
u->resolved->name = url.addrs[0].name;
u->resolved->naddrs = 1;
}
u->resolved->host = url.host;
u->resolved->port = url.port;
u->resolved->no_port = url.no_port;
return NGX_OK;
}
#if (NGX_HTTP_CACHE)
static ngx_int_t
ngx_http_fastcgi_create_key(ngx_http_request_t *r)
{
ngx_str_t *key;
ngx_http_fastcgi_loc_conf_t *flcf;
key = ngx_array_push(&r->cache->keys);
if (key == NULL) {
return NGX_ERROR;
}
flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
if (ngx_http_complex_value(r, &flcf->cache_key, key) != NGX_OK) {
return NGX_ERROR;
}
return NGX_OK;
}
#endif
static ngx_int_t
ngx_http_fastcgi_create_request(ngx_http_request_t *r)
{
off_t file_pos;
u_char ch, *pos, *lowcase_key;
size_t size, len, key_len, val_len, padding,
allocated;
ngx_uint_t i, n, next, hash, skip_empty, header_params;
ngx_buf_t *b;
ngx_chain_t *cl, *body;
ngx_list_part_t *part;
ngx_table_elt_t *header, **ignored;
ngx_http_upstream_t *u;
ngx_http_script_code_pt code;
ngx_http_script_engine_t e, le;
ngx_http_fastcgi_header_t *h;
ngx_http_fastcgi_params_t *params;
ngx_http_fastcgi_loc_conf_t *flcf;
ngx_http_script_len_code_pt lcode;
len = 0;
header_params = 0;
ignored = NULL;
u = r->upstream;
flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
#if (NGX_HTTP_CACHE)
params = u->cacheable ? &flcf->params_cache : &flcf->params;
#else
params = &flcf->params;
#endif
if (params->lengths) {
ngx_memzero(&le, sizeof(ngx_http_script_engine_t));
ngx_http_script_flush_no_cacheable_variables(r, params->flushes);
le.flushed = 1;
le.ip = params->lengths->elts;
le.request = r;
while (*(uintptr_t *) le.ip) {
lcode = *(ngx_http_script_len_code_pt *) le.ip;
key_len = lcode(&le);
lcode = *(ngx_http_script_len_code_pt *) le.ip;
skip_empty = lcode(&le);
for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) {
lcode = *(ngx_http_script_len_code_pt *) le.ip;
}
le.ip += sizeof(uintptr_t);
if (skip_empty && val_len == 0) {
continue;
}
len += 1 + key_len + ((val_len > 127) ? 4 : 1) + val_len;
}
}
if (flcf->upstream.pass_request_headers) {
allocated = 0;
lowcase_key = NULL;
if (params->number) {
n = 0;
part = &r->headers_in.headers.part;
while (part) {
n += part->nelts;
part = part->next;
}
ignored = ngx_palloc(r->pool, n * sizeof(void *));
if (ignored == NULL) {
return NGX_ERROR;
}
}
part = &r->headers_in.headers.part;
header = part->elts;
for (i = 0; /* void */; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
header = part->elts;
i = 0;
}
if (params->number) {
if (allocated < header[i].key.len) {
allocated = header[i].key.len + 16;
lowcase_key = ngx_pnalloc(r->pool, allocated);
if (lowcase_key == NULL) {
return NGX_ERROR;
}
}
hash = 0;
for (n = 0; n < header[i].key.len; n++) {
ch = header[i].key.data[n];
if (ch >= 'A' && ch <= 'Z') {
ch |= 0x20;
} else if (ch == '-') {
ch = '_';
}
hash = ngx_hash(hash, ch);
lowcase_key[n] = ch;
}
if (ngx_hash_find(&params->hash, hash, lowcase_key, n)) {
ignored[header_params++] = &header[i];
continue;
}
n += sizeof("HTTP_") - 1;
} else {
n = sizeof("HTTP_") - 1 + header[i].key.len;
}
len += ((n > 127) ? 4 : 1) + ((header[i].value.len > 127) ? 4 : 1)
+ n + header[i].value.len;
}
}
if (len > 65535) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
"fastcgi request record is too big: %uz", len);
return NGX_ERROR;
}
padding = 8 - len % 8;
padding = (padding == 8) ? 0 : padding;
size = sizeof(ngx_http_fastcgi_header_t)
+ sizeof(ngx_http_fastcgi_begin_request_t)
+ sizeof(ngx_http_fastcgi_header_t) /* NGX_HTTP_FASTCGI_PARAMS */
+ len + padding
+ sizeof(ngx_http_fastcgi_header_t) /* NGX_HTTP_FASTCGI_PARAMS */
+ sizeof(ngx_http_fastcgi_header_t); /* NGX_HTTP_FASTCGI_STDIN */
b = ngx_create_temp_buf(r->pool, size);
if (b == NULL) {
return NGX_ERROR;
}
cl = ngx_alloc_chain_link(r->pool);
if (cl == NULL) {
return NGX_ERROR;
}
cl->buf = b;
ngx_http_fastcgi_request_start.br.flags =
flcf->keep_conn ? NGX_HTTP_FASTCGI_KEEP_CONN : 0;
ngx_memcpy(b->pos, &ngx_http_fastcgi_request_start,
sizeof(ngx_http_fastcgi_request_start_t));
h = (ngx_http_fastcgi_header_t *)
(b->pos + sizeof(ngx_http_fastcgi_header_t)
+ sizeof(ngx_http_fastcgi_begin_request_t));
h->content_length_hi = (u_char) ((len >> 8) & 0xff);
h->content_length_lo = (u_char) (len & 0xff);
h->padding_length = (u_char) padding;
h->reserved = 0;
b->last = b->pos + sizeof(ngx_http_fastcgi_header_t)
+ sizeof(ngx_http_fastcgi_begin_request_t)
+ sizeof(ngx_http_fastcgi_header_t);
if (params->lengths) {
ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
e.ip = params->values->elts;
e.pos = b->last;
e.request = r;
e.flushed = 1;
le.ip = params->lengths->elts;
while (*(uintptr_t *) le.ip) {
lcode = *(ngx_http_script_len_code_pt *) le.ip;
key_len = (u_char) lcode(&le);
lcode = *(ngx_http_script_len_code_pt *) le.ip;
skip_empty = lcode(&le);
for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) {
lcode = *(ngx_http_script_len_code_pt *) le.ip;
}
le.ip += sizeof(uintptr_t);
if (skip_empty && val_len == 0) {
e.skip = 1;
while (*(uintptr_t *) e.ip) {
code = *(ngx_http_script_code_pt *) e.ip;
code((ngx_http_script_engine_t *) &e);
}
e.ip += sizeof(uintptr_t);
e.skip = 0;
continue;
}
*e.pos++ = (u_char) key_len;
if (val_len > 127) {
*e.pos++ = (u_char) (((val_len >> 24) & 0x7f) | 0x80);
*e.pos++ = (u_char) ((val_len >> 16) & 0xff);
*e.pos++ = (u_char) ((val_len >> 8) & 0xff);
*e.pos++ = (u_char) (val_len & 0xff);
} else {
*e.pos++ = (u_char) val_len;
}
while (*(uintptr_t *) e.ip) {
code = *(ngx_http_script_code_pt *) e.ip;
code((ngx_http_script_engine_t *) &e);
}
e.ip += sizeof(uintptr_t);
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"fastcgi param: \"%*s: %*s\"",
key_len, e.pos - (key_len + val_len),
val_len, e.pos - val_len);
}
b->last = e.pos;
}
if (flcf->upstream.pass_request_headers) {
part = &r->headers_in.headers.part;
header = part->elts;
for (i = 0; /* void */; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
header = part->elts;
i = 0;
}
for (n = 0; n < header_params; n++) {
if (&header[i] == ignored[n]) {
goto next;
}
}
key_len = sizeof("HTTP_") - 1 + header[i].key.len;
if (key_len > 127) {
*b->last++ = (u_char) (((key_len >> 24) & 0x7f) | 0x80);
*b->last++ = (u_char) ((key_len >> 16) & 0xff);
*b->last++ = (u_char) ((key_len >> 8) & 0xff);
*b->last++ = (u_char) (key_len & 0xff);
} else {
*b->last++ = (u_char) key_len;
}
val_len = header[i].value.len;
if (val_len > 127) {
*b->last++ = (u_char) (((val_len >> 24) & 0x7f) | 0x80);
*b->last++ = (u_char) ((val_len >> 16) & 0xff);
*b->last++ = (u_char) ((val_len >> 8) & 0xff);
*b->last++ = (u_char) (val_len & 0xff);
} else {
*b->last++ = (u_char) val_len;
}
b->last = ngx_cpymem(b->last, "HTTP_", sizeof("HTTP_") - 1);
for (n = 0; n < header[i].key.len; n++) {
ch = header[i].key.data[n];
if (ch >= 'a' && ch <= 'z') {
ch &= ~0x20;
} else if (ch == '-') {
ch = '_';
}
*b->last++ = ch;
}
b->last = ngx_copy(b->last, header[i].value.data, val_len);
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"fastcgi param: \"%*s: %*s\"",
key_len, b->last - (key_len + val_len),
val_len, b->last - val_len);
next:
continue;
}
}
if (padding) {
ngx_memzero(b->last, padding);
b->last += padding;
}
h = (ngx_http_fastcgi_header_t *) b->last;
b->last += sizeof(ngx_http_fastcgi_header_t);
h->version = 1;
h->type = NGX_HTTP_FASTCGI_PARAMS;
h->request_id_hi = 0;
h->request_id_lo = 1;
h->content_length_hi = 0;
h->content_length_lo = 0;
h->padding_length = 0;
h->reserved = 0;
if (r->request_body_no_buffering) {
u->request_bufs = cl;
u->output.output_filter = ngx_http_fastcgi_body_output_filter;
u->output.filter_ctx = r;
} else if (flcf->upstream.pass_request_body) {
body = u->request_bufs;
u->request_bufs = cl;
#if (NGX_SUPPRESS_WARN)
file_pos = 0;
pos = NULL;
#endif
while (body) {
if (ngx_buf_special(body->buf)) {
body = body->next;
continue;
}
if (body->buf->in_file) {
file_pos = body->buf->file_pos;
} else {
pos = body->buf->pos;
}
next = 0;
do {
b = ngx_alloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
ngx_memcpy(b, body->buf, sizeof(ngx_buf_t));
if (body->buf->in_file) {
b->file_pos = file_pos;
file_pos += 32 * 1024;
if (file_pos >= body->buf->file_last) {
file_pos = body->buf->file_last;
next = 1;
}
b->file_last = file_pos;
len = (ngx_uint_t) (file_pos - b->file_pos);
} else {
b->pos = pos;
b->start = pos;
pos += 32 * 1024;
if (pos >= body->buf->last) {
pos = body->buf->last;
next = 1;
}
b->last = pos;
len = (ngx_uint_t) (pos - b->pos);
}
padding = 8 - len % 8;
padding = (padding == 8) ? 0 : padding;
h = (ngx_http_fastcgi_header_t *) cl->buf->last;
cl->buf->last += sizeof(ngx_http_fastcgi_header_t);
h->version = 1;
h->type = NGX_HTTP_FASTCGI_STDIN;
h->request_id_hi = 0;
h->request_id_lo = 1;
h->content_length_hi = (u_char) ((len >> 8) & 0xff);
h->content_length_lo = (u_char) (len & 0xff);
h->padding_length = (u_char) padding;
h->reserved = 0;
cl->next = ngx_alloc_chain_link(r->pool);
if (cl->next == NULL) {
return NGX_ERROR;
}
cl = cl->next;
cl->buf = b;
b = ngx_create_temp_buf(r->pool,
sizeof(ngx_http_fastcgi_header_t)
+ padding);
if (b == NULL) {
return NGX_ERROR;
}
if (padding) {
ngx_memzero(b->last, padding);
b->last += padding;
}
cl->next = ngx_alloc_chain_link(r->pool);
if (cl->next == NULL) {
return NGX_ERROR;
}
cl = cl->next;
cl->buf = b;
} while (!next);
body = body->next;
}
} else {
u->request_bufs = cl;
}
if (!r->request_body_no_buffering) {
h = (ngx_http_fastcgi_header_t *) cl->buf->last;
cl->buf->last += sizeof(ngx_http_fastcgi_header_t);
h->version = 1;
h->type = NGX_HTTP_FASTCGI_STDIN;
h->request_id_hi = 0;
h->request_id_lo = 1;
h->content_length_hi = 0;
h->content_length_lo = 0;
h->padding_length = 0;
h->reserved = 0;
}
cl->next = NULL;
return NGX_OK;
}
static ngx_int_t
ngx_http_fastcgi_reinit_request(ngx_http_request_t *r)
{
ngx_http_fastcgi_ctx_t *f;
f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
if (f == NULL) {
return NGX_OK;
}
f->state = ngx_http_fastcgi_st_version;
f->fastcgi_stdout = 0;
f->large_stderr = 0;
if (f->split_parts) {
f->split_parts->nelts = 0;
}
r->state = 0;
return NGX_OK;
}
static ngx_int_t
ngx_http_fastcgi_body_output_filter(void *data, ngx_chain_t *in)
{
ngx_http_request_t *r = data;
off_t file_pos;
u_char *pos, *start;
size_t len, padding;
ngx_buf_t *b;
ngx_int_t rc;
ngx_uint_t next, last;
ngx_chain_t *cl, *tl, *out, **ll;
ngx_http_fastcgi_ctx_t *f;
ngx_http_fastcgi_header_t *h;
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"fastcgi output filter");
f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
if (in == NULL) {
out = in;
goto out;
}
out = NULL;
ll = &out;
if (!f->header_sent) {
/* first buffer contains headers, pass it unmodified */
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"fastcgi output header");
f->header_sent = 1;
tl = ngx_alloc_chain_link(r->pool);
if (tl == NULL) {
return NGX_ERROR;
}
tl->buf = in->buf;
*ll = tl;
ll = &tl->next;
in = in->next;
if (in == NULL) {
tl->next = NULL;
goto out;
}
}
cl = ngx_chain_get_free_buf(r->pool, &f->free);
if (cl == NULL) {
return NGX_ERROR;
}
b = cl->buf;
b->tag = (ngx_buf_tag_t) &ngx_http_fastcgi_body_output_filter;
b->temporary = 1;
if (b->start == NULL) {
/* reserve space for maximum possible padding, 7 bytes */
b->start = ngx_palloc(r->pool,
sizeof(ngx_http_fastcgi_header_t) + 7);
if (b->start == NULL) {
return NGX_ERROR;
}
b->pos = b->start;
b->last = b->start;
b->end = b->start + sizeof(ngx_http_fastcgi_header_t) + 7;
}
*ll = cl;
last = 0;
padding = 0;
#if (NGX_SUPPRESS_WARN)
file_pos = 0;
pos = NULL;
#endif
while (in) {
ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0,
"fastcgi output in l:%d f:%d %p, pos %p, size: %z "
"file: %O, size: %O",
in->buf->last_buf,
in->buf->in_file,
in->buf->start, in->buf->pos,
in->buf->last - in->buf->pos,
in->buf->file_pos,
in->buf->file_last - in->buf->file_pos);
if (in->buf->last_buf) {
last = 1;
}
if (ngx_buf_special(in->buf)) {
in = in->next;
continue;
}
if (in->buf->in_file) {
file_pos = in->buf->file_pos;
} else {
pos = in->buf->pos;
}
next = 0;
do {
tl = ngx_chain_get_free_buf(r->pool, &f->free);
if (tl == NULL) {
return NGX_ERROR;
}
b = tl->buf;
start = b->start;
ngx_memcpy(b, in->buf, sizeof(ngx_buf_t));
/*
* restore b->start to preserve memory allocated in the buffer,
* to reuse it later for headers and padding
*/
b->start = start;
if (in->buf->in_file) {
b->file_pos = file_pos;
file_pos += 32 * 1024;
if (file_pos >= in->buf->file_last) {
file_pos = in->buf->file_last;
next = 1;
}
b->file_last = file_pos;
len = (ngx_uint_t) (file_pos - b->file_pos);
} else {
b->pos = pos;
pos += 32 * 1024;
if (pos >= in->buf->last) {
pos = in->buf->last;
next = 1;
}
b->last = pos;
len = (ngx_uint_t) (pos - b->pos);
}
b->tag = (ngx_buf_tag_t) &ngx_http_fastcgi_body_output_filter;
b->shadow = in->buf;
b->last_shadow = next;
b->last_buf = 0;
b->last_in_chain = 0;
padding = 8 - len % 8;
padding = (padding == 8) ? 0 : padding;
h = (ngx_http_fastcgi_header_t *) cl->buf->last;
cl->buf->last += sizeof(ngx_http_fastcgi_header_t);
h->version = 1;
h->type = NGX_HTTP_FASTCGI_STDIN;
h->request_id_hi = 0;
h->request_id_lo = 1;
h->content_length_hi = (u_char) ((len >> 8) & 0xff);
h->content_length_lo = (u_char) (len & 0xff);
h->padding_length = (u_char) padding;
h->reserved = 0;
cl->next = tl;
cl = tl;
tl = ngx_chain_get_free_buf(r->pool, &f->free);
if (tl == NULL) {
return NGX_ERROR;
}
b = tl->buf;
b->tag = (ngx_buf_tag_t) &ngx_http_fastcgi_body_output_filter;
b->temporary = 1;
if (b->start == NULL) {
/* reserve space for maximum possible padding, 7 bytes */
b->start = ngx_palloc(r->pool,
sizeof(ngx_http_fastcgi_header_t) + 7);
if (b->start == NULL) {
return NGX_ERROR;
}
b->pos = b->start;
b->last = b->start;
b->end = b->start + sizeof(ngx_http_fastcgi_header_t) + 7;
}
if (padding) {
ngx_memzero(b->last, padding);
b->last += padding;
}
cl->next = tl;
cl = tl;
} while (!next);
in = in->next;
}
if (last) {
h = (ngx_http_fastcgi_header_t *) cl->buf->last;
cl->buf->last += sizeof(ngx_http_fastcgi_header_t);
h->version = 1;
h->type = NGX_HTTP_FASTCGI_STDIN;
h->request_id_hi = 0;
h->request_id_lo = 1;
h->content_length_hi = 0;
h->content_length_lo = 0;
h->padding_length = 0;
h->reserved = 0;
cl->buf->last_buf = 1;
} else if (padding == 0) {
/* TODO: do not allocate buffers instead */
cl->buf->temporary = 0;
cl->buf->sync = 1;
}
cl->next = NULL;
out:
#if (NGX_DEBUG)
for (cl = out; cl; cl = cl->next) {
ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0,
"fastcgi output out l:%d f:%d %p, pos %p, size: %z "
"file: %O, size: %O",
cl->buf->last_buf,
cl->buf->in_file,
cl->buf->start, cl->buf->pos,
cl->buf->last - cl->buf->pos,
cl->buf->file_pos,
cl->buf->file_last - cl->buf->file_pos);
}
#endif
rc = ngx_chain_writer(&r->upstream->writer, out);
ngx_chain_update_chains(r->pool, &f->free, &f->busy, &out,
(ngx_buf_tag_t) &ngx_http_fastcgi_body_output_filter);
for (cl = f->free; cl; cl = cl->next) {
/* mark original buffers as sent */
if (cl->buf->shadow) {
if (cl->buf->last_shadow) {
b = cl->buf->shadow;
b->pos = b->last;
}
cl->buf->shadow = NULL;
}
}
return rc;
}
static ngx_int_t
ngx_http_fastcgi_process_header(ngx_http_request_t *r)
{
u_char *p, *msg, *start, *last,
*part_start, *part_end;
size_t size;
ngx_str_t *status_line, *pattern;
ngx_int_t rc, status;
ngx_buf_t buf;
ngx_uint_t i;
ngx_table_elt_t *h;
ngx_http_upstream_t *u;
ngx_http_fastcgi_ctx_t *f;
ngx_http_upstream_header_t *hh;
ngx_http_fastcgi_loc_conf_t *flcf;
ngx_http_fastcgi_split_part_t *part;
ngx_http_upstream_main_conf_t *umcf;
f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
u = r->upstream;
for ( ;; ) {
if (f->state < ngx_http_fastcgi_st_data) {
f->pos = u->buffer.pos;
f->last = u->buffer.last;
rc = ngx_http_fastcgi_process_record(r, f);
u->buffer.pos = f->pos;
u->buffer.last = f->last;
if (rc == NGX_AGAIN) {
return NGX_AGAIN;
}
if (rc == NGX_ERROR) {
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
if (f->type != NGX_HTTP_FASTCGI_STDOUT
&& f->type != NGX_HTTP_FASTCGI_STDERR)
{
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent unexpected FastCGI record: %ui",
f->type);
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
if (f->type == NGX_HTTP_FASTCGI_STDOUT && f->length == 0) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream prematurely closed FastCGI stdout");
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
}
if (f->state == ngx_http_fastcgi_st_padding) {
if (u->buffer.pos + f->padding < u->buffer.last) {
f->state = ngx_http_fastcgi_st_version;
u->buffer.pos += f->padding;
continue;
}
if (u->buffer.pos + f->padding == u->buffer.last) {
f->state = ngx_http_fastcgi_st_version;
u->buffer.pos = u->buffer.last;
return NGX_AGAIN;
}
f->padding -= u->buffer.last - u->buffer.pos;
u->buffer.pos = u->buffer.last;
return NGX_AGAIN;
}
/* f->state == ngx_http_fastcgi_st_data */
if (f->type == NGX_HTTP_FASTCGI_STDERR) {
if (f->length) {
msg = u->buffer.pos;
if (u->buffer.pos + f->length <= u->buffer.last) {
u->buffer.pos += f->length;
f->length = 0;
f->state = ngx_http_fastcgi_st_padding;
} else {
f->length -= u->buffer.last - u->buffer.pos;
u->buffer.pos = u->buffer.last;
}
for (p = u->buffer.pos - 1; msg < p; p--) {
if (*p != LF && *p != CR && *p != '.' && *p != ' ') {
break;
}
}
p++;
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"FastCGI sent in stderr: \"%*s\"", p - msg, msg);
flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
if (flcf->catch_stderr) {
pattern = flcf->catch_stderr->elts;
for (i = 0; i < flcf->catch_stderr->nelts; i++) {
if (ngx_strnstr(msg, (char *) pattern[i].data,
p - msg)
!= NULL)
{
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
}
}
if (u->buffer.pos == u->buffer.last) {
if (!f->fastcgi_stdout) {
/*
* the special handling the large number
* of the PHP warnings to not allocate memory
*/
#if (NGX_HTTP_CACHE)
if (r->cache) {
u->buffer.pos = u->buffer.start
+ r->cache->header_start;
} else {
u->buffer.pos = u->buffer.start;
}
#else
u->buffer.pos = u->buffer.start;
#endif
u->buffer.last = u->buffer.pos;
f->large_stderr = 1;
}
return NGX_AGAIN;
}
} else {
f->state = ngx_http_fastcgi_st_padding;
}
continue;
}
/* f->type == NGX_HTTP_FASTCGI_STDOUT */
#if (NGX_HTTP_CACHE)
if (f->large_stderr && r->cache) {
ssize_t len;
ngx_http_fastcgi_header_t *fh;
start = u->buffer.start + r->cache->header_start;
len = u->buffer.pos - start - 2 * sizeof(ngx_http_fastcgi_header_t);
/*
* A tail of large stderr output before HTTP header is placed
* in a cache file without a FastCGI record header.
* To workaround it we put a dummy FastCGI record header at the
* start of the stderr output or update r->cache_header_start,
* if there is no enough place for the record header.
*/
if (len >= 0) {
fh = (ngx_http_fastcgi_header_t *) start;
fh->version = 1;
fh->type = NGX_HTTP_FASTCGI_STDERR;
fh->request_id_hi = 0;
fh->request_id_lo = 1;
fh->content_length_hi = (u_char) ((len >> 8) & 0xff);
fh->content_length_lo = (u_char) (len & 0xff);
fh->padding_length = 0;
fh->reserved = 0;
} else {
r->cache->header_start += u->buffer.pos - start
- sizeof(ngx_http_fastcgi_header_t);
}
f->large_stderr = 0;
}
#endif
f->fastcgi_stdout = 1;
start = u->buffer.pos;
if (u->buffer.pos + f->length < u->buffer.last) {
/*
* set u->buffer.last to the end of the FastCGI record data
* for ngx_http_parse_header_line()
*/
last = u->buffer.last;
u->buffer.last = u->buffer.pos + f->length;
} else {
last = NULL;
}
for ( ;; ) {
part_start = u->buffer.pos;
part_end = u->buffer.last;
rc = ngx_http_parse_header_line(r, &u->buffer, 1);
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fastcgi parser: %i", rc);
if (rc == NGX_AGAIN) {
break;
}
if (rc == NGX_OK) {
/* a header line has been parsed successfully */
h = ngx_list_push(&u->headers_in.headers);
if (h == NULL) {
return NGX_ERROR;
}
if (f->split_parts && f->split_parts->nelts) {
part = f->split_parts->elts;
size = u->buffer.pos - part_start;
for (i = 0; i < f->split_parts->nelts; i++) {
size += part[i].end - part[i].start;
}
p = ngx_pnalloc(r->pool, size);
if (p == NULL) {
h->hash = 0;
return NGX_ERROR;
}
buf.pos = p;
for (i = 0; i < f->split_parts->nelts; i++) {
p = ngx_cpymem(p, part[i].start,
part[i].end - part[i].start);
}
p = ngx_cpymem(p, part_start, u->buffer.pos - part_start);
buf.last = p;
f->split_parts->nelts = 0;
rc = ngx_http_parse_header_line(r, &buf, 1);
if (rc != NGX_OK) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
"invalid header after joining "
"FastCGI records");
h->hash = 0;
return NGX_ERROR;
}
h->key.len = r->header_name_end - r->header_name_start;
h->key.data = r->header_name_start;
h->key.data[h->key.len] = '\0';
h->value.len = r->header_end - r->header_start;
h->value.data = r->header_start;
h->value.data[h->value.len] = '\0';
h->lowcase_key = ngx_pnalloc(r->pool, h->key.len);
if (h->lowcase_key == NULL) {
return NGX_ERROR;
}
} else {
h->key.len = r->header_name_end - r->header_name_start;
h->value.len = r->header_end - r->header_start;
h->key.data = ngx_pnalloc(r->pool,
h->key.len + 1 + h->value.len + 1
+ h->key.len);
if (h->key.data == NULL) {
h->hash = 0;
return NGX_ERROR;
}
h->value.data = h->key.data + h->key.len + 1;
h->lowcase_key = h->key.data + h->key.len + 1
+ h->value.len + 1;
ngx_memcpy(h->key.data, r->header_name_start, h->key.len);
h->key.data[h->key.len] = '\0';
ngx_memcpy(h->value.data, r->header_start, h->value.len);
h->value.data[h->value.len] = '\0';
}
h->hash = r->header_hash;
if (h->key.len == r->lowcase_index) {
ngx_memcpy(h->lowcase_key, r->lowcase_header, h->key.len);
} else {
ngx_strlow(h->lowcase_key, h->key.data, h->key.len);
}
hh = ngx_hash_find(&umcf->headers_in_hash, h->hash,
h->lowcase_key, h->key.len);
if (hh && hh->handler(r, h, hh->offset) != NGX_OK) {
return NGX_ERROR;
}
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fastcgi header: \"%V: %V\"",
&h->key, &h->value);
if (u->buffer.pos < u->buffer.last) {
continue;
}
/* the end of the FastCGI record */
break;
}
if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
/* a whole header has been parsed successfully */
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fastcgi header done");
if (u->headers_in.status) {
status_line = &u->headers_in.status->value;
status = ngx_atoi(status_line->data, 3);
if (status == NGX_ERROR) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent invalid status \"%V\"",
status_line);
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
u->headers_in.status_n = status;
u->headers_in.status_line = *status_line;
} else if (u->headers_in.location) {
u->headers_in.status_n = 302;
ngx_str_set(&u->headers_in.status_line,
"302 Moved Temporarily");
} else {
u->headers_in.status_n = 200;
ngx_str_set(&u->headers_in.status_line, "200 OK");
}
if (u->state && u->state->status == 0) {
u->state->status = u->headers_in.status_n;
}
break;
}
/* there was error while a header line parsing */
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent invalid header");
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
if (last) {
u->buffer.last = last;
}
f->length -= u->buffer.pos - start;
if (f->length == 0) {
f->state = ngx_http_fastcgi_st_padding;
}
if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
return NGX_OK;
}
if (rc == NGX_OK) {
continue;
}
/* rc == NGX_AGAIN */
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"upstream split a header line in FastCGI records");
if (f->split_parts == NULL) {
f->split_parts = ngx_array_create(r->pool, 1,
sizeof(ngx_http_fastcgi_split_part_t));
if (f->split_parts == NULL) {
return NGX_ERROR;
}
}
part = ngx_array_push(f->split_parts);
if (part == NULL) {
return NGX_ERROR;
}
part->start = part_start;
part->end = part_end;
if (u->buffer.pos < u->buffer.last) {
continue;
}
return NGX_AGAIN;
}
}
static ngx_int_t
ngx_http_fastcgi_input_filter_init(void *data)
{
ngx_http_request_t *r = data;
ngx_http_upstream_t *u;
ngx_http_fastcgi_ctx_t *f;
ngx_http_fastcgi_loc_conf_t *flcf;
u = r->upstream;
f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
u->pipe->length = flcf->keep_conn ?
(off_t) sizeof(ngx_http_fastcgi_header_t) : -1;
if (u->headers_in.status_n == NGX_HTTP_NO_CONTENT
|| u->headers_in.status_n == NGX_HTTP_NOT_MODIFIED)
{
f->rest = 0;
} else if (r->method == NGX_HTTP_HEAD) {
f->rest = -2;
} else {
f->rest = u->headers_in.content_length_n;
}
return NGX_OK;
}
static ngx_int_t
ngx_http_fastcgi_input_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
{
u_char *m, *msg;
ngx_int_t rc;
ngx_buf_t *b, **prev;
ngx_chain_t *cl;
ngx_http_request_t *r;
ngx_http_fastcgi_ctx_t *f;
ngx_http_fastcgi_loc_conf_t *flcf;
if (buf->pos == buf->last) {
return NGX_OK;
}
r = p->input_ctx;
f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
if (p->upstream_done || f->closed) {
r->upstream->keepalive = 0;
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, p->log, 0,
"http fastcgi data after close");
return NGX_OK;
}
b = NULL;
prev = &buf->shadow;
f->pos = buf->pos;
f->last = buf->last;
for ( ;; ) {
if (f->state < ngx_http_fastcgi_st_data) {
rc = ngx_http_fastcgi_process_record(r, f);
if (rc == NGX_AGAIN) {
break;
}
if (rc == NGX_ERROR) {
return NGX_ERROR;
}
if (f->type == NGX_HTTP_FASTCGI_STDOUT && f->length == 0) {
f->state = ngx_http_fastcgi_st_padding;
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, p->log, 0,
"http fastcgi closed stdout");
if (f->rest > 0) {
ngx_log_error(NGX_LOG_ERR, p->log, 0,
"upstream prematurely closed "
"FastCGI stdout");
p->upstream_error = 1;
p->upstream_eof = 0;
f->closed = 1;
break;
}
if (!flcf->keep_conn) {
p->upstream_done = 1;
}
continue;
}
if (f->type == NGX_HTTP_FASTCGI_END_REQUEST) {
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, p->log, 0,
"http fastcgi sent end request");
if (f->rest > 0) {
ngx_log_error(NGX_LOG_ERR, p->log, 0,
"upstream prematurely closed "
"FastCGI request");
p->upstream_error = 1;
p->upstream_eof = 0;
f->closed = 1;
break;
}
if (!flcf->keep_conn) {
p->upstream_done = 1;
break;
}
continue;
}
}
if (f->state == ngx_http_fastcgi_st_padding) {
if (f->type == NGX_HTTP_FASTCGI_END_REQUEST) {
if (f->pos + f->padding < f->last) {
p->upstream_done = 1;
break;
}
if (f->pos + f->padding == f->last) {
p->upstream_done = 1;
r->upstream->keepalive = 1;
break;
}
f->padding -= f->last - f->pos;
break;
}
if (f->pos + f->padding < f->last) {
f->state = ngx_http_fastcgi_st_version;
f->pos += f->padding;
continue;
}
if (f->pos + f->padding == f->last) {
f->state = ngx_http_fastcgi_st_version;
break;
}
f->padding -= f->last - f->pos;
break;
}
/* f->state == ngx_http_fastcgi_st_data */
if (f->type == NGX_HTTP_FASTCGI_STDERR) {
if (f->length) {
if (f->pos == f->last) {
break;
}
msg = f->pos;
if (f->pos + f->length <= f->last) {
f->pos += f->length;
f->length = 0;
f->state = ngx_http_fastcgi_st_padding;
} else {
f->length -= f->last - f->pos;
f->pos = f->last;
}
for (m = f->pos - 1; msg < m; m--) {
if (*m != LF && *m != CR && *m != '.' && *m != ' ') {
break;
}
}
ngx_log_error(NGX_LOG_ERR, p->log, 0,
"FastCGI sent in stderr: \"%*s\"",
m + 1 - msg, msg);
} else {
f->state = ngx_http_fastcgi_st_padding;
}
continue;
}
if (f->type == NGX_HTTP_FASTCGI_END_REQUEST) {
if (f->pos + f->length <= f->last) {
f->state = ngx_http_fastcgi_st_padding;
f->pos += f->length;
continue;
}
f->length -= f->last - f->pos;
break;
}
/* f->type == NGX_HTTP_FASTCGI_STDOUT */
if (f->pos == f->last) {
break;
}
if (f->rest == -2) {
f->rest = r->upstream->headers_in.content_length_n;
}
if (f->rest == 0) {
ngx_log_error(NGX_LOG_WARN, p->log, 0,
"upstream sent more data than specified in "
"\"Content-Length\" header");
p->upstream_done = 1;
break;
}
cl = ngx_chain_get_free_buf(p->pool, &p->free);
if (cl == NULL) {
return NGX_ERROR;
}
b = cl->buf;
ngx_memzero(b, sizeof(ngx_buf_t));
b->pos = f->pos;
b->start = buf->start;
b->end = buf->end;
b->tag = p->tag;
b->temporary = 1;
b->recycled = 1;
*prev = b;
prev = &b->shadow;
if (p->in) {
*p->last_in = cl;
} else {
p->in = cl;
}
p->last_in = &cl->next;
/* STUB */ b->num = buf->num;
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, p->log, 0,
"input buf #%d %p", b->num, b->pos);
if (f->pos + f->length <= f->last) {
f->state = ngx_http_fastcgi_st_padding;
f->pos += f->length;
b->last = f->pos;
} else {
f->length -= f->last - f->pos;
f->pos = f->last;
b->last = f->last;
}
if (f->rest > 0) {
if (b->last - b->pos > f->rest) {
ngx_log_error(NGX_LOG_WARN, p->log, 0,
"upstream sent more data than specified in "
"\"Content-Length\" header");
b->last = b->pos + f->rest;
p->upstream_done = 1;
break;
}
f->rest -= b->last - b->pos;
}
}
if (flcf->keep_conn) {
/* set p->length, minimal amount of data we want to see */
if (f->state < ngx_http_fastcgi_st_data) {
p->length = 1;
} else if (f->state == ngx_http_fastcgi_st_padding) {
p->length = f->padding;
} else {
/* ngx_http_fastcgi_st_data */
p->length = f->length;
}
}
if (b) {
b->shadow = buf;
b->last_shadow = 1;
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, p->log, 0,
"input buf %p %z", b->pos, b->last - b->pos);
return NGX_OK;
}
/* there is no data record in the buf, add it to free chain */
if (ngx_event_pipe_add_free_buf(p, buf) != NGX_OK) {
return NGX_ERROR;
}
return NGX_OK;
}
static ngx_int_t
ngx_http_fastcgi_non_buffered_filter(void *data, ssize_t bytes)
{
u_char *m, *msg;
ngx_int_t rc;
ngx_buf_t *b, *buf;
ngx_chain_t *cl, **ll;
ngx_http_request_t *r;
ngx_http_upstream_t *u;
ngx_http_fastcgi_ctx_t *f;
r = data;
f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
u = r->upstream;
buf = &u->buffer;
buf->pos = buf->last;
buf->last += bytes;
for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
ll = &cl->next;
}
f->pos = buf->pos;
f->last = buf->last;
for ( ;; ) {
if (f->state < ngx_http_fastcgi_st_data) {
rc = ngx_http_fastcgi_process_record(r, f);
if (rc == NGX_AGAIN) {
break;
}
if (rc == NGX_ERROR) {
return NGX_ERROR;
}
if (f->type == NGX_HTTP_FASTCGI_STDOUT && f->length == 0) {
f->state = ngx_http_fastcgi_st_padding;
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fastcgi closed stdout");
continue;
}
}
if (f->state == ngx_http_fastcgi_st_padding) {
if (f->type == NGX_HTTP_FASTCGI_END_REQUEST) {
if (f->rest > 0) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream prematurely closed "
"FastCGI request");
u->error = 1;
break;
}
if (f->pos + f->padding < f->last) {
u->length = 0;
break;
}
if (f->pos + f->padding == f->last) {
u->length = 0;
u->keepalive = 1;
break;
}
f->padding -= f->last - f->pos;
break;
}
if (f->pos + f->padding < f->last) {
f->state = ngx_http_fastcgi_st_version;
f->pos += f->padding;
continue;
}
if (f->pos + f->padding == f->last) {
f->state = ngx_http_fastcgi_st_version;
break;
}
f->padding -= f->last - f->pos;
break;
}
/* f->state == ngx_http_fastcgi_st_data */
if (f->type == NGX_HTTP_FASTCGI_STDERR) {
if (f->length) {
if (f->pos == f->last) {
break;
}
msg = f->pos;
if (f->pos + f->length <= f->last) {
f->pos += f->length;
f->length = 0;
f->state = ngx_http_fastcgi_st_padding;
} else {
f->length -= f->last - f->pos;
f->pos = f->last;
}
for (m = f->pos - 1; msg < m; m--) {
if (*m != LF && *m != CR && *m != '.' && *m != ' ') {
break;
}
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"FastCGI sent in stderr: \"%*s\"",
m + 1 - msg, msg);
} else {
f->state = ngx_http_fastcgi_st_padding;
}
continue;
}
if (f->type == NGX_HTTP_FASTCGI_END_REQUEST) {
if (f->pos + f->length <= f->last) {
f->state = ngx_http_fastcgi_st_padding;
f->pos += f->length;
continue;
}
f->length -= f->last - f->pos;
break;
}
/* f->type == NGX_HTTP_FASTCGI_STDOUT */
if (f->pos == f->last) {
break;
}
if (f->rest == 0) {
ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
"upstream sent more data than specified in "
"\"Content-Length\" header");
u->length = 0;
break;
}
cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
if (cl == NULL) {
return NGX_ERROR;
}
*ll = cl;
ll = &cl->next;
b = cl->buf;
b->flush = 1;
b->memory = 1;
b->pos = f->pos;
b->tag = u->output.tag;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fastcgi output buf %p", b->pos);
if (f->pos + f->length <= f->last) {
f->state = ngx_http_fastcgi_st_padding;
f->pos += f->length;
b->last = f->pos;
} else {
f->length -= f->last - f->pos;
f->pos = f->last;
b->last = f->last;
}
if (f->rest > 0) {
if (b->last - b->pos > f->rest) {
ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
"upstream sent more data than specified in "
"\"Content-Length\" header");
b->last = b->pos + f->rest;
u->length = 0;
break;
}
f->rest -= b->last - b->pos;
}
}
return NGX_OK;
}
static ngx_int_t
ngx_http_fastcgi_process_record(ngx_http_request_t *r,
ngx_http_fastcgi_ctx_t *f)
{
u_char ch, *p;
ngx_http_fastcgi_state_e state;
state = f->state;
for (p = f->pos; p < f->last; p++) {
ch = *p;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fastcgi record byte: %02Xd", ch);
switch (state) {
case ngx_http_fastcgi_st_version:
if (ch != 1) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent unsupported FastCGI "
"protocol version: %d", ch);
return NGX_ERROR;
}
state = ngx_http_fastcgi_st_type;
break;
case ngx_http_fastcgi_st_type:
switch (ch) {
case NGX_HTTP_FASTCGI_STDOUT:
case NGX_HTTP_FASTCGI_STDERR:
case NGX_HTTP_FASTCGI_END_REQUEST:
f->type = (ngx_uint_t) ch;
break;
default:
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent invalid FastCGI "
"record type: %d", ch);
return NGX_ERROR;
}
state = ngx_http_fastcgi_st_request_id_hi;
break;
/* we support the single request per connection */
case ngx_http_fastcgi_st_request_id_hi:
if (ch != 0) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent unexpected FastCGI "
"request id high byte: %d", ch);
return NGX_ERROR;
}
state = ngx_http_fastcgi_st_request_id_lo;
break;
case ngx_http_fastcgi_st_request_id_lo:
if (ch != 1) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent unexpected FastCGI "
"request id low byte: %d", ch);
return NGX_ERROR;
}
state = ngx_http_fastcgi_st_content_length_hi;
break;
case ngx_http_fastcgi_st_content_length_hi:
f->length = ch << 8;
state = ngx_http_fastcgi_st_content_length_lo;
break;
case ngx_http_fastcgi_st_content_length_lo:
f->length |= (size_t) ch;
state = ngx_http_fastcgi_st_padding_length;
break;
case ngx_http_fastcgi_st_padding_length:
f->padding = (size_t) ch;
state = ngx_http_fastcgi_st_reserved;
break;
case ngx_http_fastcgi_st_reserved:
state = ngx_http_fastcgi_st_data;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fastcgi record length: %z", f->length);