Mercurial > hg > nginx
view src/http/modules/ngx_http_fastcgi_module.c @ 9203:0de20f43db25
Fixed request termination with AIO and subrequests (ticket #2555).
When a request was terminated due to an error via ngx_http_terminate_request()
while an AIO operation was running in a subrequest, various issues were
observed. This happened because ngx_http_request_finalizer() was only set
in the subrequest where ngx_http_terminate_request() was called, but not
in the subrequest where the AIO operation was running. After completion
of the AIO operation normal processing of the subrequest was resumed, leading
to issues.
In particular, in case of the upstream module, termination of the request
called upstream cleanup, which closed the upstream connection. Attempts to
further work with the upstream connection after AIO operation completion
resulted in segfaults in ngx_ssl_recv(), "readv() failed (9: Bad file
descriptor) while reading upstream" errors, or socket leaks.
In ticket #2555, issues were observed with the following configuration
with cache background update (with thread writing instrumented to
introduce a delay, when a client closes the connection during an update):
location = /background-and-aio-write {
proxy_pass ...
proxy_cache one;
proxy_cache_valid 200 1s;
proxy_cache_background_update on;
proxy_cache_use_stale updating;
aio threads;
aio_write on;
limit_rate 1000;
}
Similarly, the same issue can be seen with SSI, and can be caused by
errors in subrequests, such as in the following configuration
(where "/proxy" uses AIO, and "/sleep" returns 444 after some delay,
causing request termination):
location = /ssi-active-boom {
ssi on;
ssi_types *;
return 200 '
<!--#include virtual="/proxy" -->
<!--#include virtual="/sleep" -->
';
limit_rate 1000;
}
Or the same with both AIO operation and the error in non-active subrequests
(which needs slightly different handling, see below):
location = /ssi-non-active-boom {
ssi on;
ssi_types *;
return 200 '
<!--#include virtual="/static" -->
<!--#include virtual="/proxy" -->
<!--#include virtual="/sleep" -->
';
limit_rate 1000;
}
Similarly, issues can be observed with just static files. However,
with static files potential impact is limited due to timeout safeguards
in ngx_http_writer(), and the fact that c->error is set during request
termination.
In a simple configuration with an AIO operation in the active subrequest,
such as in the following configuration, the connection is closed right
after completion of the AIO operation anyway, since ngx_http_writer()
tries to write to the connection and fails due to c->error set:
location = /ssi-active-static-boom {
ssi on;
ssi_types *;
return 200 '
<!--#include virtual="/static-aio" -->
<!--#include virtual="/sleep" -->
';
limit_rate 1000;
}
In the following configuration, with an AIO operation in a non-active
subrequest, the connection is closed only after send_timeout expires:
location = /ssi-non-active-static-boom {
ssi on;
ssi_types *;
return 200 '
<!--#include virtual="/static" -->
<!--#include virtual="/static-aio" -->
<!--#include virtual="/sleep" -->
';
limit_rate 1000;
}
Fix is to introduce r->main->terminated flag, which is to be checked
by AIO event handlers when the r->main->blocked counter is decremented.
When the flag is set, handlers are expected to wake up the connection
instead of the subrequest (which might be already cleaned up).
Additionally, now ngx_http_request_finalizer() is always set in the
active subrequest, so waking up the connection properly finalizes the
request even if termination happened in a non-active subrequest.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Tue, 30 Jan 2024 03:20:05 +0300 |
parents | 35bb47f65cab |
children |
line wrap: on
line source
/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> typedef struct { ngx_array_t caches; /* ngx_http_file_cache_t * */ } ngx_http_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, sep, *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, *hn, **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 (ngx_http_link_multi_headers(r) != NGX_OK) { return NGX_ERROR; } if (params->number || r->headers_in.multi) { 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; } for (n = 0; n < header_params; n++) { if (&header[i] == ignored[n]) { goto next_length; } } 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(¶ms->hash, hash, lowcase_key, n)) { ignored[header_params++] = &header[i]; continue; } } key_len = sizeof("HTTP_") - 1 + header[i].key.len; val_len = header[i].value.len; for (hn = header[i].next; hn; hn = hn->next) { val_len += hn->value.len + 2; ignored[header_params++] = hn; } len += ((key_len > 127) ? 4 : 1) + key_len + ((val_len > 127) ? 4 : 1) + val_len; next_length: continue; } } 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_value; } } 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; for (hn = header[i].next; hn; hn = hn->next) { val_len += hn->value.len + 2; } 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, header[i].value.len); if (header[i].next) { if (header[i].key.len == sizeof("Cookie") - 1 && ngx_strncasecmp(header[i].key.data, (u_char *) "Cookie", sizeof("Cookie") - 1) == 0) { sep = ';'; } else { sep = ','; } for (hn = header[i].next; hn; hn = hn->next) { *b->last++ = sep; *b->last++ = ' '; b->last = ngx_copy(b->last, hn->value.data, hn->value.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_value: 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) { rc = hh->handler(r, h, hh->offset); if (rc != NGX_OK) { return rc; } } 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; if (status_line->len > 3) { 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; } /* rc == NGX_HTTP_PARSE_INVALID_HEADER */ ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "upstream sent invalid header: \"%*s\\x%02xd...\"", r->header_end - r->header_name_start, r->header_name_start, *r->header_end); 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); f->pos = p + 1; f->state = state; return NGX_OK; /* suppress warning */ case ngx_http_fastcgi_st_data: case ngx_http_fastcgi_st_padding: break; } } f->pos = p; f->state = state; return NGX_AGAIN; } static void ngx_http_fastcgi_abort_request(ngx_http_request_t *r) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "abort http fastcgi request"); return; } static void ngx_http_fastcgi_finalize_request(ngx_http_request_t *r, ngx_int_t rc) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "finalize http fastcgi request"); return; } static ngx_int_t ngx_http_fastcgi_add_variables(ngx_conf_t *cf) { ngx_http_variable_t *var, *v; for (v = ngx_http_fastcgi_vars; v->name.len; v++) { var = ngx_http_add_variable(cf, &v->name, v->flags); if (var == NULL) { return NGX_ERROR; } var->get_handler = v->get_handler; var->data = v->data; } return NGX_OK; } static void * ngx_http_fastcgi_create_main_conf(ngx_conf_t *cf) { ngx_http_fastcgi_main_conf_t *conf; conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_fastcgi_main_conf_t)); if (conf == NULL) { return NULL; } #if (NGX_HTTP_CACHE) if (ngx_array_init(&conf->caches, cf->pool, 4, sizeof(ngx_http_file_cache_t *)) != NGX_OK) { return NULL; } #endif return conf; } static void * ngx_http_fastcgi_create_loc_conf(ngx_conf_t *cf) { ngx_http_fastcgi_loc_conf_t *conf; conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_fastcgi_loc_conf_t)); if (conf == NULL) { return NULL; } /* * set by ngx_pcalloc(): * * conf->upstream.bufs.num = 0; * conf->upstream.ignore_headers = 0; * conf->upstream.next_upstream = 0; * conf->upstream.cache_zone = NULL; * conf->upstream.cache_use_stale = 0; * conf->upstream.cache_methods = 0; * conf->upstream.temp_path = NULL; * conf->upstream.hide_headers_hash = { NULL, 0 }; * conf->upstream.store_lengths = NULL; * conf->upstream.store_values = NULL; * * conf->index.len = { 0, NULL }; */ conf->upstream.store = NGX_CONF_UNSET; conf->upstream.store_access = NGX_CONF_UNSET_UINT; conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT; conf->upstream.buffering = NGX_CONF_UNSET; conf->upstream.request_buffering = NGX_CONF_UNSET; conf->upstream.ignore_client_abort = NGX_CONF_UNSET; conf->upstream.force_ranges = NGX_CONF_UNSET; conf->upstream.local = NGX_CONF_UNSET_PTR; conf->upstream.socket_keepalive = NGX_CONF_UNSET; conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; conf->upstream.next_upstream_timeout = NGX_CONF_UNSET_MSEC; conf->upstream.send_lowat = NGX_CONF_UNSET_SIZE; conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; conf->upstream.limit_rate = NGX_CONF_UNSET_SIZE; conf->upstream.busy_buffers_size_conf = NGX_CONF_UNSET_SIZE; conf->upstream.max_temp_file_size_conf = NGX_CONF_UNSET_SIZE; conf->upstream.temp_file_write_size_conf = NGX_CONF_UNSET_SIZE; conf->upstream.pass_request_headers = NGX_CONF_UNSET; conf->upstream.pass_request_body = NGX_CONF_UNSET; #if (NGX_HTTP_CACHE) conf->upstream.cache = NGX_CONF_UNSET; conf->upstream.cache_min_uses = NGX_CONF_UNSET_UINT; conf->upstream.cache_max_range_offset = NGX_CONF_UNSET; conf->upstream.cache_bypass = NGX_CONF_UNSET_PTR; conf->upstream.no_cache = NGX_CONF_UNSET_PTR; conf->upstream.cache_valid = NGX_CONF_UNSET_PTR; conf->upstream.cache_lock = NGX_CONF_UNSET; conf->upstream.cache_lock_timeout = NGX_CONF_UNSET_MSEC; conf->upstream.cache_lock_age = NGX_CONF_UNSET_MSEC; conf->upstream.cache_revalidate = NGX_CONF_UNSET; conf->upstream.cache_background_update = NGX_CONF_UNSET; #endif conf->upstream.hide_headers = NGX_CONF_UNSET_PTR; conf->upstream.pass_headers = NGX_CONF_UNSET_PTR; conf->upstream.intercept_errors = NGX_CONF_UNSET; /* "fastcgi_cyclic_temp_file" is disabled */ conf->upstream.cyclic_temp_file = 0; conf->upstream.change_buffering = 1; conf->catch_stderr = NGX_CONF_UNSET_PTR; conf->keep_conn = NGX_CONF_UNSET; ngx_str_set(&conf->upstream.module, "fastcgi"); return conf; } static char * ngx_http_fastcgi_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_http_fastcgi_loc_conf_t *prev = parent; ngx_http_fastcgi_loc_conf_t *conf = child; size_t size; ngx_int_t rc; ngx_hash_init_t hash; ngx_http_core_loc_conf_t *clcf; #if (NGX_HTTP_CACHE) if (conf->upstream.store > 0) { conf->upstream.cache = 0; } if (conf->upstream.cache > 0) { conf->upstream.store = 0; } #endif if (conf->upstream.store == NGX_CONF_UNSET) { ngx_conf_merge_value(conf->upstream.store, prev->upstream.store, 0); conf->upstream.store_lengths = prev->upstream.store_lengths; conf->upstream.store_values = prev->upstream.store_values; } ngx_conf_merge_uint_value(conf->upstream.store_access, prev->upstream.store_access, 0600); ngx_conf_merge_uint_value(conf->upstream.next_upstream_tries, prev->upstream.next_upstream_tries, 0); ngx_conf_merge_value(conf->upstream.buffering, prev->upstream.buffering, 1); ngx_conf_merge_value(conf->upstream.request_buffering, prev->upstream.request_buffering, 1); ngx_conf_merge_value(conf->upstream.ignore_client_abort, prev->upstream.ignore_client_abort, 0); ngx_conf_merge_value(conf->upstream.force_ranges, prev->upstream.force_ranges, 0); ngx_conf_merge_ptr_value(conf->upstream.local, prev->upstream.local, NULL); ngx_conf_merge_value(conf->upstream.socket_keepalive, prev->upstream.socket_keepalive, 0); ngx_conf_merge_msec_value(conf->upstream.connect_timeout, prev->upstream.connect_timeout, 60000); ngx_conf_merge_msec_value(conf->upstream.send_timeout, prev->upstream.send_timeout, 60000); ngx_conf_merge_msec_value(conf->upstream.read_timeout, prev->upstream.read_timeout, 60000); ngx_conf_merge_msec_value(conf->upstream.next_upstream_timeout, prev->upstream.next_upstream_timeout, 0); ngx_conf_merge_size_value(conf->upstream.send_lowat, prev->upstream.send_lowat, 0); ngx_conf_merge_size_value(conf->upstream.buffer_size, prev->upstream.buffer_size, (size_t) ngx_pagesize); ngx_conf_merge_size_value(conf->upstream.limit_rate, prev->upstream.limit_rate, 0); ngx_conf_merge_bufs_value(conf->upstream.bufs, prev->upstream.bufs, 8, ngx_pagesize); if (conf->upstream.bufs.num < 2) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "there must be at least 2 \"fastcgi_buffers\""); return NGX_CONF_ERROR; } size = conf->upstream.buffer_size; if (size < conf->upstream.bufs.size) { size = conf->upstream.bufs.size; } ngx_conf_merge_size_value(conf->upstream.busy_buffers_size_conf, prev->upstream.busy_buffers_size_conf, NGX_CONF_UNSET_SIZE); if (conf->upstream.busy_buffers_size_conf == NGX_CONF_UNSET_SIZE) { conf->upstream.busy_buffers_size = 2 * size; } else { conf->upstream.busy_buffers_size = conf->upstream.busy_buffers_size_conf; } if (conf->upstream.busy_buffers_size < size) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"fastcgi_busy_buffers_size\" must be equal to or greater than " "the maximum of the value of \"fastcgi_buffer_size\" and " "one of the \"fastcgi_buffers\""); return NGX_CONF_ERROR; } if (conf->upstream.busy_buffers_size > (conf->upstream.bufs.num - 1) * conf->upstream.bufs.size) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"fastcgi_busy_buffers_size\" must be less than " "the size of all \"fastcgi_buffers\" minus one buffer"); return NGX_CONF_ERROR; } ngx_conf_merge_size_value(conf->upstream.temp_file_write_size_conf, prev->upstream.temp_file_write_size_conf, NGX_CONF_UNSET_SIZE); if (conf->upstream.temp_file_write_size_conf == NGX_CONF_UNSET_SIZE) { conf->upstream.temp_file_write_size = 2 * size; } else { conf->upstream.temp_file_write_size = conf->upstream.temp_file_write_size_conf; } if (conf->upstream.temp_file_write_size < size) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"fastcgi_temp_file_write_size\" must be equal to or greater " "than the maximum of the value of \"fastcgi_buffer_size\" and " "one of the \"fastcgi_buffers\""); return NGX_CONF_ERROR; } ngx_conf_merge_size_value(conf->upstream.max_temp_file_size_conf, prev->upstream.max_temp_file_size_conf, NGX_CONF_UNSET_SIZE); if (conf->upstream.max_temp_file_size_conf == NGX_CONF_UNSET_SIZE) { conf->upstream.max_temp_file_size = 1024 * 1024 * 1024; } else { conf->upstream.max_temp_file_size = conf->upstream.max_temp_file_size_conf; } if (conf->upstream.max_temp_file_size != 0 && conf->upstream.max_temp_file_size < size) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"fastcgi_max_temp_file_size\" must be equal to zero to disable " "temporary files usage or must be equal to or greater than " "the maximum of the value of \"fastcgi_buffer_size\" and " "one of the \"fastcgi_buffers\""); return NGX_CONF_ERROR; } ngx_conf_merge_bitmask_value(conf->upstream.ignore_headers, prev->upstream.ignore_headers, NGX_CONF_BITMASK_SET); ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, prev->upstream.next_upstream, (NGX_CONF_BITMASK_SET |NGX_HTTP_UPSTREAM_FT_ERROR |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { conf->upstream.next_upstream = NGX_CONF_BITMASK_SET |NGX_HTTP_UPSTREAM_FT_OFF; } if (ngx_conf_merge_path_value(cf, &conf->upstream.temp_path, prev->upstream.temp_path, &ngx_http_fastcgi_temp_path) != NGX_OK) { return NGX_CONF_ERROR; } #if (NGX_HTTP_CACHE) if (conf->upstream.cache == NGX_CONF_UNSET) { ngx_conf_merge_value(conf->upstream.cache, prev->upstream.cache, 0); conf->upstream.cache_zone = prev->upstream.cache_zone; conf->upstream.cache_value = prev->upstream.cache_value; } if (conf->upstream.cache_zone && conf->upstream.cache_zone->data == NULL) { ngx_shm_zone_t *shm_zone; shm_zone = conf->upstream.cache_zone; ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"fastcgi_cache\" zone \"%V\" is unknown", &shm_zone->shm.name); return NGX_CONF_ERROR; } ngx_conf_merge_uint_value(conf->upstream.cache_min_uses, prev->upstream.cache_min_uses, 1); ngx_conf_merge_off_value(conf->upstream.cache_max_range_offset, prev->upstream.cache_max_range_offset, NGX_MAX_OFF_T_VALUE); ngx_conf_merge_bitmask_value(conf->upstream.cache_use_stale, prev->upstream.cache_use_stale, (NGX_CONF_BITMASK_SET |NGX_HTTP_UPSTREAM_FT_OFF)); if (conf->upstream.cache_use_stale & NGX_HTTP_UPSTREAM_FT_OFF) { conf->upstream.cache_use_stale = NGX_CONF_BITMASK_SET |NGX_HTTP_UPSTREAM_FT_OFF; } if (conf->upstream.cache_use_stale & NGX_HTTP_UPSTREAM_FT_ERROR) { conf->upstream.cache_use_stale |= NGX_HTTP_UPSTREAM_FT_NOLIVE; } if (conf->upstream.cache_methods == 0) { conf->upstream.cache_methods = prev->upstream.cache_methods; } conf->upstream.cache_methods |= NGX_HTTP_GET|NGX_HTTP_HEAD; ngx_conf_merge_ptr_value(conf->upstream.cache_bypass, prev->upstream.cache_bypass, NULL); ngx_conf_merge_ptr_value(conf->upstream.no_cache, prev->upstream.no_cache, NULL); ngx_conf_merge_ptr_value(conf->upstream.cache_valid, prev->upstream.cache_valid, NULL); if (conf->cache_key.value.data == NULL) { conf->cache_key = prev->cache_key; } if (conf->upstream.cache && conf->cache_key.value.data == NULL) { ngx_conf_log_error(NGX_LOG_WARN, cf, 0, "no \"fastcgi_cache_key\" for \"fastcgi_cache\""); } ngx_conf_merge_value(conf->upstream.cache_lock, prev->upstream.cache_lock, 0); ngx_conf_merge_msec_value(conf->upstream.cache_lock_timeout, prev->upstream.cache_lock_timeout, 5000); ngx_conf_merge_msec_value(conf->upstream.cache_lock_age, prev->upstream.cache_lock_age, 5000); ngx_conf_merge_value(conf->upstream.cache_revalidate, prev->upstream.cache_revalidate, 0); ngx_conf_merge_value(conf->upstream.cache_background_update, prev->upstream.cache_background_update, 0); #endif ngx_conf_merge_value(conf->upstream.pass_request_headers, prev->upstream.pass_request_headers, 1); ngx_conf_merge_value(conf->upstream.pass_request_body, prev->upstream.pass_request_body, 1); ngx_conf_merge_value(conf->upstream.intercept_errors, prev->upstream.intercept_errors, 0); ngx_conf_merge_ptr_value(conf->catch_stderr, prev->catch_stderr, NULL); ngx_conf_merge_value(conf->keep_conn, prev->keep_conn, 0); ngx_conf_merge_str_value(conf->index, prev->index, ""); hash.max_size = 512; hash.bucket_size = ngx_align(64, ngx_cacheline_size); hash.name = "fastcgi_hide_headers_hash"; if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream, &prev->upstream, ngx_http_fastcgi_hide_headers, &hash) != NGX_OK) { return NGX_CONF_ERROR; } clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); if (clcf->noname && conf->upstream.upstream == NULL && conf->fastcgi_lengths == NULL) { conf->upstream.upstream = prev->upstream.upstream; conf->fastcgi_lengths = prev->fastcgi_lengths; conf->fastcgi_values = prev->fastcgi_values; } if (clcf->lmt_excpt && clcf->handler == NULL && (conf->upstream.upstream || conf->fastcgi_lengths)) { clcf->handler = ngx_http_fastcgi_handler; } #if (NGX_PCRE) if (conf->split_regex == NULL) { conf->split_regex = prev->split_regex; conf->split_name = prev->split_name; } #endif if (conf->params_source == NULL) { conf->params = prev->params; #if (NGX_HTTP_CACHE) conf->params_cache = prev->params_cache; #endif conf->params_source = prev->params_source; } rc = ngx_http_fastcgi_init_params(cf, conf, &conf->params, NULL); if (rc != NGX_OK) { return NGX_CONF_ERROR; } #if (NGX_HTTP_CACHE) if (conf->upstream.cache) { rc = ngx_http_fastcgi_init_params(cf, conf, &conf->params_cache, ngx_http_fastcgi_cache_headers); if (rc != NGX_OK) { return NGX_CONF_ERROR; } } #endif /* * special handling to preserve conf->params in the "http" section * to inherit it to all servers */ if (prev->params.hash.buckets == NULL && conf->params_source == prev->params_source) { prev->params = conf->params; #if (NGX_HTTP_CACHE) prev->params_cache = conf->params_cache; #endif } return NGX_CONF_OK; } 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) { u_char *p; size_t size; uintptr_t *code; ngx_uint_t i, nsrc; ngx_array_t headers_names, params_merged; ngx_keyval_t *h; ngx_hash_key_t *hk; ngx_hash_init_t hash; ngx_http_upstream_param_t *src, *s; ngx_http_script_compile_t sc; ngx_http_script_copy_code_t *copy; if (params->hash.buckets) { return NGX_OK; } if (conf->params_source == NULL && default_params == NULL) { params->hash.buckets = (void *) 1; return NGX_OK; } params->lengths = ngx_array_create(cf->pool, 64, 1); if (params->lengths == NULL) { return NGX_ERROR; } params->values = ngx_array_create(cf->pool, 512, 1); if (params->values == NULL) { return NGX_ERROR; } if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t)) != NGX_OK) { return NGX_ERROR; } if (conf->params_source) { src = conf->params_source->elts; nsrc = conf->params_source->nelts; } else { src = NULL; nsrc = 0; } if (default_params) { if (ngx_array_init(¶ms_merged, cf->temp_pool, 4, sizeof(ngx_http_upstream_param_t)) != NGX_OK) { return NGX_ERROR; } for (i = 0; i < nsrc; i++) { s = ngx_array_push(¶ms_merged); if (s == NULL) { return NGX_ERROR; } *s = src[i]; } h = default_params; while (h->key.len) { src = params_merged.elts; nsrc = params_merged.nelts; for (i = 0; i < nsrc; i++) { if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) { goto next; } } s = ngx_array_push(¶ms_merged); if (s == NULL) { return NGX_ERROR; } s->key = h->key; s->value = h->value; s->skip_empty = 1; next: h++; } src = params_merged.elts; nsrc = params_merged.nelts; } for (i = 0; i < nsrc; i++) { if (src[i].key.len > sizeof("HTTP_") - 1 && ngx_strncmp(src[i].key.data, "HTTP_", sizeof("HTTP_") - 1) == 0) { hk = ngx_array_push(&headers_names); if (hk == NULL) { return NGX_ERROR; } hk->key.len = src[i].key.len - 5; hk->key.data = src[i].key.data + 5; hk->key_hash = ngx_hash_key_lc(hk->key.data, hk->key.len); hk->value = (void *) 1; if (src[i].value.len == 0) { continue; } } copy = ngx_array_push_n(params->lengths, sizeof(ngx_http_script_copy_code_t)); if (copy == NULL) { return NGX_ERROR; } copy->code = (ngx_http_script_code_pt) (void *) ngx_http_script_copy_len_code; copy->len = src[i].key.len; copy = ngx_array_push_n(params->lengths, sizeof(ngx_http_script_copy_code_t)); if (copy == NULL) { return NGX_ERROR; } copy->code = (ngx_http_script_code_pt) (void *) ngx_http_script_copy_len_code; copy->len = src[i].skip_empty; size = (sizeof(ngx_http_script_copy_code_t) + src[i].key.len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1); copy = ngx_array_push_n(params->values, size); if (copy == NULL) { return NGX_ERROR; } copy->code = ngx_http_script_copy_code; copy->len = src[i].key.len; p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); ngx_memcpy(p, src[i].key.data, src[i].key.len); ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); sc.cf = cf; sc.source = &src[i].value; sc.flushes = ¶ms->flushes; sc.lengths = ¶ms->lengths; sc.values = ¶ms->values; if (ngx_http_script_compile(&sc) != NGX_OK) { return NGX_ERROR; } code = ngx_array_push_n(params->lengths, sizeof(uintptr_t)); if (code == NULL) { return NGX_ERROR; } *code = (uintptr_t) NULL; code = ngx_array_push_n(params->values, sizeof(uintptr_t)); if (code == NULL) { return NGX_ERROR; } *code = (uintptr_t) NULL; } code = ngx_array_push_n(params->lengths, sizeof(uintptr_t)); if (code == NULL) { return NGX_ERROR; } *code = (uintptr_t) NULL; params->number = headers_names.nelts; hash.hash = ¶ms->hash; hash.key = ngx_hash_key_lc; hash.max_size = 512; hash.bucket_size = 64; hash.name = "fastcgi_params_hash"; hash.pool = cf->pool; hash.temp_pool = NULL; return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts); } static ngx_int_t ngx_http_fastcgi_script_name_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { u_char *p; ngx_http_fastcgi_ctx_t *f; ngx_http_fastcgi_loc_conf_t *flcf; flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module); f = ngx_http_fastcgi_split(r, flcf); if (f == NULL) { return NGX_ERROR; } if (f->script_name.len == 0 || f->script_name.data[f->script_name.len - 1] != '/') { v->len = f->script_name.len; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = f->script_name.data; return NGX_OK; } v->len = f->script_name.len + flcf->index.len; v->data = ngx_pnalloc(r->pool, v->len); if (v->data == NULL) { return NGX_ERROR; } p = ngx_copy(v->data, f->script_name.data, f->script_name.len); ngx_memcpy(p, flcf->index.data, flcf->index.len); return NGX_OK; } static ngx_int_t ngx_http_fastcgi_path_info_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { ngx_http_fastcgi_ctx_t *f; ngx_http_fastcgi_loc_conf_t *flcf; flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module); f = ngx_http_fastcgi_split(r, flcf); if (f == NULL) { return NGX_ERROR; } v->len = f->path_info.len; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = f->path_info.data; return NGX_OK; } static ngx_http_fastcgi_ctx_t * ngx_http_fastcgi_split(ngx_http_request_t *r, ngx_http_fastcgi_loc_conf_t *flcf) { ngx_http_fastcgi_ctx_t *f; #if (NGX_PCRE) ngx_int_t n; int captures[(1 + 2) * 3]; f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module); if (f == NULL) { f = ngx_pcalloc(r->pool, sizeof(ngx_http_fastcgi_ctx_t)); if (f == NULL) { return NULL; } ngx_http_set_ctx(r, f, ngx_http_fastcgi_module); } if (f->script_name.len) { return f; } if (flcf->split_regex == NULL) { f->script_name = r->uri; return f; } n = ngx_regex_exec(flcf->split_regex, &r->uri, captures, (1 + 2) * 3); if (n >= 0) { /* match */ f->script_name.len = captures[3] - captures[2]; f->script_name.data = r->uri.data + captures[2]; f->path_info.len = captures[5] - captures[4]; f->path_info.data = r->uri.data + captures[4]; return f; } if (n == NGX_REGEX_NO_MATCHED) { f->script_name = r->uri; return f; } ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, ngx_regex_exec_n " failed: %i on \"%V\" using \"%V\"", n, &r->uri, &flcf->split_name); return NULL; #else f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module); if (f == NULL) { f = ngx_pcalloc(r->pool, sizeof(ngx_http_fastcgi_ctx_t)); if (f == NULL) { return NULL; } ngx_http_set_ctx(r, f, ngx_http_fastcgi_module); } f->script_name = r->uri; return f; #endif } static char * ngx_http_fastcgi_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_fastcgi_loc_conf_t *flcf = conf; ngx_url_t u; ngx_str_t *value, *url; ngx_uint_t n; ngx_http_core_loc_conf_t *clcf; ngx_http_script_compile_t sc; if (flcf->upstream.upstream || flcf->fastcgi_lengths) { return "is duplicate"; } clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); clcf->handler = ngx_http_fastcgi_handler; if (clcf->name.len && clcf->name.data[clcf->name.len - 1] == '/') { clcf->auto_redirect = 1; } value = cf->args->elts; url = &value[1]; n = ngx_http_script_variables_count(url); if (n) { ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); sc.cf = cf; sc.source = url; sc.lengths = &flcf->fastcgi_lengths; sc.values = &flcf->fastcgi_values; sc.variables = n; sc.complete_lengths = 1; sc.complete_values = 1; if (ngx_http_script_compile(&sc) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; } ngx_memzero(&u, sizeof(ngx_url_t)); u.url = value[1]; u.no_resolve = 1; flcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); if (flcf->upstream.upstream == NULL) { return NGX_CONF_ERROR; } return NGX_CONF_OK; } static char * ngx_http_fastcgi_split_path_info(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { #if (NGX_PCRE) ngx_http_fastcgi_loc_conf_t *flcf = conf; ngx_str_t *value; ngx_regex_compile_t rc; u_char errstr[NGX_MAX_CONF_ERRSTR]; value = cf->args->elts; flcf->split_name = value[1]; ngx_memzero(&rc, sizeof(ngx_regex_compile_t)); rc.pattern = value[1]; rc.pool = cf->pool; rc.err.len = NGX_MAX_CONF_ERRSTR; rc.err.data = errstr; if (ngx_regex_compile(&rc) != NGX_OK) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%V", &rc.err); return NGX_CONF_ERROR; } if (rc.captures != 2) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "pattern \"%V\" must have 2 captures", &value[1]); return NGX_CONF_ERROR; } flcf->split_regex = rc.regex; return NGX_CONF_OK; #else ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"%V\" requires PCRE library", &cmd->name); return NGX_CONF_ERROR; #endif } static char * ngx_http_fastcgi_store(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_fastcgi_loc_conf_t *flcf = conf; ngx_str_t *value; ngx_http_script_compile_t sc; if (flcf->upstream.store != NGX_CONF_UNSET) { return "is duplicate"; } value = cf->args->elts; if (ngx_strcmp(value[1].data, "off") == 0) { flcf->upstream.store = 0; return NGX_CONF_OK; } #if (NGX_HTTP_CACHE) if (flcf->upstream.cache > 0) { return "is incompatible with \"fastcgi_cache\""; } #endif flcf->upstream.store = 1; if (ngx_strcmp(value[1].data, "on") == 0) { return NGX_CONF_OK; } /* include the terminating '\0' into script */ value[1].len++; ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); sc.cf = cf; sc.source = &value[1]; sc.lengths = &flcf->upstream.store_lengths; sc.values = &flcf->upstream.store_values; sc.variables = ngx_http_script_variables_count(&value[1]); sc.complete_lengths = 1; sc.complete_values = 1; if (ngx_http_script_compile(&sc) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; } #if (NGX_HTTP_CACHE) static char * ngx_http_fastcgi_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_fastcgi_loc_conf_t *flcf = conf; ngx_str_t *value; ngx_http_complex_value_t cv; ngx_http_compile_complex_value_t ccv; value = cf->args->elts; if (flcf->upstream.cache != NGX_CONF_UNSET) { return "is duplicate"; } if (ngx_strcmp(value[1].data, "off") == 0) { flcf->upstream.cache = 0; return NGX_CONF_OK; } if (flcf->upstream.store > 0) { return "is incompatible with \"fastcgi_store\""; } flcf->upstream.cache = 1; ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[1]; ccv.complex_value = &cv; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } if (cv.lengths != NULL) { flcf->upstream.cache_value = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t)); if (flcf->upstream.cache_value == NULL) { return NGX_CONF_ERROR; } *flcf->upstream.cache_value = cv; return NGX_CONF_OK; } flcf->upstream.cache_zone = ngx_shared_memory_add(cf, &value[1], 0, &ngx_http_fastcgi_module); if (flcf->upstream.cache_zone == NULL) { return NGX_CONF_ERROR; } return NGX_CONF_OK; } static char * ngx_http_fastcgi_cache_key(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_fastcgi_loc_conf_t *flcf = conf; ngx_str_t *value; ngx_http_compile_complex_value_t ccv; value = cf->args->elts; if (flcf->cache_key.value.data) { return "is duplicate"; } ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[1]; ccv.complex_value = &flcf->cache_key; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; } #endif static char * ngx_http_fastcgi_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, "\"fastcgi_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, "\"fastcgi_send_lowat\" is not supported, ignored"); *np = 0; #endif return NGX_CONF_OK; }