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nginx / nginx / 118110d9697e745aeb74c4d45dae72d9a7f540f0 / . / src / http / modules / ngx_http_scgi_module.c
blob: 3fb227b28cd541c5556e25021aa33baa3bc127a2 [file] [log] [blame]
/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
* Copyright (C) Manlio Perillo (manlio.perillo@gmail.com)
*/
#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_scgi_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_scgi_params_t;
typedef struct {
ngx_http_upstream_conf_t upstream;
ngx_http_scgi_params_t params;
#if (NGX_HTTP_CACHE)
ngx_http_scgi_params_t params_cache;
#endif
ngx_array_t *params_source;
ngx_array_t *scgi_lengths;
ngx_array_t *scgi_values;
#if (NGX_HTTP_CACHE)
ngx_http_complex_value_t cache_key;
#endif
} ngx_http_scgi_loc_conf_t;
static ngx_int_t ngx_http_scgi_eval(ngx_http_request_t *r,
ngx_http_scgi_loc_conf_t *scf);
static ngx_int_t ngx_http_scgi_create_request(ngx_http_request_t *r);
static ngx_int_t ngx_http_scgi_reinit_request(ngx_http_request_t *r);
static ngx_int_t ngx_http_scgi_process_status_line(ngx_http_request_t *r);
static ngx_int_t ngx_http_scgi_process_header(ngx_http_request_t *r);
static void ngx_http_scgi_abort_request(ngx_http_request_t *r);
static void ngx_http_scgi_finalize_request(ngx_http_request_t *r, ngx_int_t rc);
static void *ngx_http_scgi_create_main_conf(ngx_conf_t *cf);
static void *ngx_http_scgi_create_loc_conf(ngx_conf_t *cf);
static char *ngx_http_scgi_merge_loc_conf(ngx_conf_t *cf, void *parent,
void *child);
static ngx_int_t ngx_http_scgi_init_params(ngx_conf_t *cf,
ngx_http_scgi_loc_conf_t *conf, ngx_http_scgi_params_t *params,
ngx_keyval_t *default_params);
static char *ngx_http_scgi_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static char *ngx_http_scgi_store(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
#if (NGX_HTTP_CACHE)
static ngx_int_t ngx_http_scgi_create_key(ngx_http_request_t *r);
static char *ngx_http_scgi_cache(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_http_scgi_cache_key(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
#endif
static ngx_conf_bitmask_t ngx_http_scgi_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_scgi_module;
static ngx_command_t ngx_http_scgi_commands[] = {
{ ngx_string("scgi_pass"),
NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
ngx_http_scgi_pass,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("scgi_store"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_scgi_store,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.store_access),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.buffering),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.request_buffering),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.ignore_client_abort),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.local),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.connect_timeout),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.send_timeout),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.buffer_size),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.pass_request_headers),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.pass_request_body),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.intercept_errors),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.read_timeout),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.bufs),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.busy_buffers_size_conf),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.force_ranges),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.limit_rate),
NULL },
#if (NGX_HTTP_CACHE)
{ ngx_string("scgi_cache"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_scgi_cache,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("scgi_cache_key"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_scgi_cache_key,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("scgi_cache_path"),
NGX_HTTP_MAIN_CONF|NGX_CONF_2MORE,
ngx_http_file_cache_set_slot,
NGX_HTTP_MAIN_CONF_OFFSET,
offsetof(ngx_http_scgi_main_conf_t, caches),
&ngx_http_scgi_module },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.cache_bypass),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.no_cache),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.cache_valid),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.cache_min_uses),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.cache_max_range_offset),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.cache_use_stale),
&ngx_http_scgi_next_upstream_masks },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.cache_methods),
&ngx_http_upstream_cache_method_mask },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.cache_lock),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.cache_lock_timeout),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.cache_lock_age),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.cache_revalidate),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.cache_background_update),
NULL },
#endif
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.temp_path),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.max_temp_file_size_conf),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.temp_file_write_size_conf),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.next_upstream),
&ngx_http_scgi_next_upstream_masks },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.next_upstream_tries),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.next_upstream_timeout),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, params_source),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.pass_headers),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.hide_headers),
NULL },
{ ngx_string("scgi_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_scgi_loc_conf_t, upstream.ignore_headers),
&ngx_http_upstream_ignore_headers_masks },
ngx_null_command
};
static ngx_http_module_t ngx_http_scgi_module_ctx = {
NULL, /* preconfiguration */
NULL, /* postconfiguration */
ngx_http_scgi_create_main_conf, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
ngx_http_scgi_create_loc_conf, /* create location configuration */
ngx_http_scgi_merge_loc_conf /* merge location configuration */
};
ngx_module_t ngx_http_scgi_module = {
NGX_MODULE_V1,
&ngx_http_scgi_module_ctx, /* module context */
ngx_http_scgi_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_str_t ngx_http_scgi_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_scgi_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_scgi_temp_path = {
ngx_string(NGX_HTTP_SCGI_TEMP_PATH), { 1, 2, 0 }
};
static ngx_int_t
ngx_http_scgi_handler(ngx_http_request_t *r)
{
ngx_int_t rc;
ngx_http_status_t *status;
ngx_http_upstream_t *u;
ngx_http_scgi_loc_conf_t *scf;
#if (NGX_HTTP_CACHE)
ngx_http_scgi_main_conf_t *smcf;
#endif
if (ngx_http_upstream_create(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
status = ngx_pcalloc(r->pool, sizeof(ngx_http_status_t));
if (status == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_http_set_ctx(r, status, ngx_http_scgi_module);
scf = ngx_http_get_module_loc_conf(r, ngx_http_scgi_module);
if (scf->scgi_lengths) {
if (ngx_http_scgi_eval(r, scf) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
}
u = r->upstream;
ngx_str_set(&u->schema, "scgi://");
u->output.tag = (ngx_buf_tag_t) &ngx_http_scgi_module;
u->conf = &scf->upstream;
#if (NGX_HTTP_CACHE)
smcf = ngx_http_get_module_main_conf(r, ngx_http_scgi_module);
u->caches = &smcf->caches;
u->create_key = ngx_http_scgi_create_key;
#endif
u->create_request = ngx_http_scgi_create_request;
u->reinit_request = ngx_http_scgi_reinit_request;
u->process_header = ngx_http_scgi_process_status_line;
u->abort_request = ngx_http_scgi_abort_request;
u->finalize_request = ngx_http_scgi_finalize_request;
r->state = 0;
u->buffering = scf->upstream.buffering;
u->pipe = ngx_pcalloc(r->pool, sizeof(ngx_event_pipe_t));
if (u->pipe == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
u->pipe->input_filter = ngx_event_pipe_copy_input_filter;
u->pipe->input_ctx = r;
if (!scf->upstream.request_buffering
&& scf->upstream.pass_request_body
&& !r->headers_in.chunked)
{
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_scgi_eval(ngx_http_request_t *r, ngx_http_scgi_loc_conf_t * scf)
{
ngx_url_t url;
ngx_http_upstream_t *u;
ngx_memzero(&url, sizeof(ngx_url_t));
if (ngx_http_script_run(r, &url.url, scf->scgi_lengths->elts, 0,
scf->scgi_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_scgi_create_key(ngx_http_request_t *r)
{
ngx_str_t *key;
ngx_http_scgi_loc_conf_t *scf;
key = ngx_array_push(&r->cache->keys);
if (key == NULL) {
return NGX_ERROR;
}
scf = ngx_http_get_module_loc_conf(r, ngx_http_scgi_module);
if (ngx_http_complex_value(r, &scf->cache_key, key) != NGX_OK) {
return NGX_ERROR;
}
return NGX_OK;
}
#endif
static ngx_int_t
ngx_http_scgi_create_request(ngx_http_request_t *r)
{
off_t content_length_n;
u_char ch, *key, *val, *lowcase_key;
size_t len, key_len, val_len, allocated;
ngx_buf_t *b;
ngx_str_t content_length;
ngx_uint_t i, n, hash, skip_empty, header_params;
ngx_chain_t *cl, *body;
ngx_list_part_t *part;
ngx_table_elt_t *header, **ignored;
ngx_http_scgi_params_t *params;
ngx_http_script_code_pt code;
ngx_http_script_engine_t e, le;
ngx_http_scgi_loc_conf_t *scf;
ngx_http_script_len_code_pt lcode;
u_char buffer[NGX_OFF_T_LEN];
content_length_n = 0;
body = r->upstream->request_bufs;
while (body) {
content_length_n += ngx_buf_size(body->buf);
body = body->next;
}
content_length.data = buffer;
content_length.len = ngx_sprintf(buffer, "%O", content_length_n) - buffer;
len = sizeof("CONTENT_LENGTH") + content_length.len + 1;
header_params = 0;
ignored = NULL;
scf = ngx_http_get_module_loc_conf(r, ngx_http_scgi_module);
#if (NGX_HTTP_CACHE)
params = r->upstream->cacheable ? &scf->params_cache : &scf->params;
#else
params = &scf->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 += key_len + val_len + 1;
}
}
if (scf->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;
}
}
len += sizeof("HTTP_") - 1 + header[i].key.len + 1
+ header[i].value.len + 1;
}
}
/* netstring: "length:" + packet + "," */
b = ngx_create_temp_buf(r->pool, NGX_SIZE_T_LEN + 1 + len + 1);
if (b == NULL) {
return NGX_ERROR;
}
cl = ngx_alloc_chain_link(r->pool);
if (cl == NULL) {
return NGX_ERROR;
}
cl->buf = b;
b->last = ngx_sprintf(b->last, "%ui:CONTENT_LENGTH%Z%V%Z",
len, &content_length);
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;
lcode(&le); /* key length */
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;
}
#if (NGX_DEBUG)
key = e.pos;
#endif
code = *(ngx_http_script_code_pt *) e.ip;
code((ngx_http_script_engine_t *) &e);
#if (NGX_DEBUG)
val = e.pos;
#endif
while (*(uintptr_t *) e.ip) {
code = *(ngx_http_script_code_pt *) e.ip;
code((ngx_http_script_engine_t *) &e);
}
*e.pos++ = '\0';
e.ip += sizeof(uintptr_t);
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"scgi param: \"%s: %s\"", key, val);
}
b->last = e.pos;
}
if (scf->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 = b->last;
b->last = ngx_cpymem(key, "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++ = (u_char) 0;
val = b->last;
b->last = ngx_copy(val, header[i].value.data, header[i].value.len);
*b->last++ = (u_char) 0;
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"scgi param: \"%s: %s\"", key, val);
next:
continue;
}
}
*b->last++ = (u_char) ',';
if (r->request_body_no_buffering) {
r->upstream->request_bufs = cl;
} else if (scf->upstream.pass_request_body) {
body = r->upstream->request_bufs;
r->upstream->request_bufs = cl;
while (body) {
b = ngx_alloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
ngx_memcpy(b, body->buf, sizeof(ngx_buf_t));
cl->next = ngx_alloc_chain_link(r->pool);
if (cl->next == NULL) {
return NGX_ERROR;
}
cl = cl->next;
cl->buf = b;
body = body->next;
}
} else {
r->upstream->request_bufs = cl;
}
cl->next = NULL;
return NGX_OK;
}
static ngx_int_t
ngx_http_scgi_reinit_request(ngx_http_request_t *r)
{
ngx_http_status_t *status;
status = ngx_http_get_module_ctx(r, ngx_http_scgi_module);
if (status == NULL) {
return NGX_OK;
}
status->code = 0;
status->count = 0;
status->start = NULL;
status->end = NULL;
r->upstream->process_header = ngx_http_scgi_process_status_line;
r->state = 0;
return NGX_OK;
}
static ngx_int_t
ngx_http_scgi_process_status_line(ngx_http_request_t *r)
{
size_t len;
ngx_int_t rc;
ngx_http_status_t *status;
ngx_http_upstream_t *u;
status = ngx_http_get_module_ctx(r, ngx_http_scgi_module);
if (status == NULL) {
return NGX_ERROR;
}
u = r->upstream;
rc = ngx_http_parse_status_line(r, &u->buffer, status);
if (rc == NGX_AGAIN) {
return rc;
}
if (rc == NGX_ERROR) {
u->process_header = ngx_http_scgi_process_header;
return ngx_http_scgi_process_header(r);
}
if (u->state && u->state->status == 0) {
u->state->status = status->code;
}
u->headers_in.status_n = status->code;
len = status->end - status->start;
u->headers_in.status_line.len = len;
u->headers_in.status_line.data = ngx_pnalloc(r->pool, len);
if (u->headers_in.status_line.data == NULL) {
return NGX_ERROR;
}
ngx_memcpy(u->headers_in.status_line.data, status->start, len);
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http scgi status %ui \"%V\"",
u->headers_in.status_n, &u->headers_in.status_line);
u->process_header = ngx_http_scgi_process_header;
return ngx_http_scgi_process_header(r);
}
static ngx_int_t
ngx_http_scgi_process_header(ngx_http_request_t *r)
{
ngx_str_t *status_line;
ngx_int_t rc, status;
ngx_table_elt_t *h;
ngx_http_upstream_t *u;
ngx_http_upstream_header_t *hh;
ngx_http_upstream_main_conf_t *umcf;
umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
for ( ;; ) {
rc = ngx_http_parse_header_line(r, &r->upstream->buffer, 1);
if (rc == NGX_OK) {
/* a header line has been parsed successfully */
h = ngx_list_push(&r->upstream->headers_in.headers);
if (h == NULL) {
return NGX_ERROR;
}
h->hash = r->header_hash;
h->key.len = r->header_name_end - r->header_name_start;
h->value.len = r->header_end - r->header_start;
h->key.data = ngx_pnalloc(r->pool,
h->key.len + 1 + h->value.len + 1
+ h->key.len);
if (h->key.data == NULL) {
h->hash = 0;
return NGX_ERROR;
}
h->value.data = h->key.data + h->key.len + 1;
h->lowcase_key = h->key.data + h->key.len + 1 + h->value.len + 1;
ngx_memcpy(h->key.data, r->header_name_start, h->key.len);
h->key.data[h->key.len] = '\0';
ngx_memcpy(h->value.data, r->header_start, h->value.len);
h->value.data[h->value.len] = '\0';
if (h->key.len == r->lowcase_index) {
ngx_memcpy(h->lowcase_key, r->lowcase_header, h->key.len);
} else {
ngx_strlow(h->lowcase_key, h->key.data, h->key.len);
}
hh = ngx_hash_find(&umcf->headers_in_hash, h->hash,
h->lowcase_key, h->key.len);
if (hh && hh->handler(r, h, hh->offset) != NGX_OK) {
return NGX_ERROR;
}
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http scgi header: \"%V: %V\"", &h->key, &h->value);
continue;
}
if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
/* a whole header has been parsed successfully */
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http scgi header done");
u = r->upstream;
if (u->headers_in.status_n) {
goto 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;
}
done:
if (u->headers_in.status_n == NGX_HTTP_SWITCHING_PROTOCOLS
&& r->headers_in.upgrade)
{
u->upgrade = 1;
}
return NGX_OK;
}
if (rc == NGX_AGAIN) {
return NGX_AGAIN;
}
/* there was error while a header line parsing */
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent invalid header");
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
}
static void
ngx_http_scgi_abort_request(ngx_http_request_t *r)
{
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"abort http scgi request");
return;
}
static void
ngx_http_scgi_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
{
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"finalize http scgi request");
return;
}
static void *
ngx_http_scgi_create_main_conf(ngx_conf_t *cf)
{
ngx_http_scgi_main_conf_t *conf;
conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_scgi_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_scgi_create_loc_conf(ngx_conf_t *cf)
{
ngx_http_scgi_loc_conf_t *conf;
conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_scgi_loc_conf_t));
if (conf == NULL) {
return 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.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;
/* "scgi_cyclic_temp_file" is disabled */
conf->upstream.cyclic_temp_file = 0;
conf->upstream.change_buffering = 1;
ngx_str_set(&conf->upstream.module, "scgi");
return conf;
}
static char *
ngx_http_scgi_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
{
ngx_http_scgi_loc_conf_t *prev = parent;
ngx_http_scgi_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_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 \"scgi_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,
"\"scgi_busy_buffers_size\" must be equal to or greater "
"than the maximum of the value of \"scgi_buffer_size\" and "
"one of the \"scgi_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,
"\"scgi_busy_buffers_size\" must be less than "
"the size of all \"scgi_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,
"\"scgi_temp_file_write_size\" must be equal to or greater than "
"the maximum of the value of \"scgi_buffer_size\" and "
"one of the \"scgi_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,
"\"scgi_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 \"scgi_buffer_size\" and "
"one of the \"scgi_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_scgi_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,
"\"scgi_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 \"scgi_cache_key\" for \"scgi_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);
hash.max_size = 512;
hash.bucket_size = ngx_align(64, ngx_cacheline_size);
hash.name = "scgi_hide_headers_hash";
if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream,
&prev->upstream, ngx_http_scgi_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->scgi_lengths == NULL)
{
conf->upstream.upstream = prev->upstream.upstream;
conf->scgi_lengths = prev->scgi_lengths;
conf->scgi_values = prev->scgi_values;
}
if (clcf->lmt_excpt && clcf->handler == NULL
&& (conf->upstream.upstream || conf->scgi_lengths))
{
clcf->handler = ngx_http_scgi_handler;
}
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_scgi_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_scgi_init_params(cf, conf, &conf->params_cache,
ngx_http_scgi_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_scgi_init_params(ngx_conf_t *cf, ngx_http_scgi_loc_conf_t *conf,
ngx_http_scgi_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(&params_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(&params_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(&params_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) ngx_http_script_copy_len_code;
copy->len = src[i].key.len + 1;
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) ngx_http_script_copy_len_code;
copy->len = src[i].skip_empty;
size = (sizeof(ngx_http_script_copy_code_t)
+ src[i].key.len + 1 + 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 + 1;
p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
(void) ngx_cpystrn(p, src[i].key.data, src[i].key.len + 1);
ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
sc.cf = cf;
sc.source = &src[i].value;
sc.flushes = &params->flushes;
sc.lengths = &params->lengths;
sc.values = &params->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 = &params->hash;
hash.key = ngx_hash_key_lc;
hash.max_size = 512;
hash.bucket_size = 64;
hash.name = "scgi_params_hash";
hash.pool = cf->pool;
hash.temp_pool = NULL;
return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts);
}
static char *
ngx_http_scgi_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_scgi_loc_conf_t *scf = 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 (scf->upstream.upstream || scf->scgi_lengths) {
return "is duplicate";
}
clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
clcf->handler = ngx_http_scgi_handler;
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 = &scf->scgi_lengths;
sc.values = &scf->scgi_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;
scf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0);
if (scf->upstream.upstream == NULL) {
return NGX_CONF_ERROR;
}
if (clcf->name.data[clcf->name.len - 1] == '/') {
clcf->auto_redirect = 1;
}
return NGX_CONF_OK;
}
static char *
ngx_http_scgi_store(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_scgi_loc_conf_t *scf = conf;
ngx_str_t *value;
ngx_http_script_compile_t sc;
if (scf->upstream.store != NGX_CONF_UNSET) {
return "is duplicate";
}
value = cf->args->elts;
if (ngx_strcmp(value[1].data, "off") == 0) {
scf->upstream.store = 0;
return NGX_CONF_OK;
}
#if (NGX_HTTP_CACHE)
if (scf->upstream.cache > 0) {
return "is incompatible with \"scgi_cache\"";
}
#endif
scf->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 = &scf->upstream.store_lengths;
sc.values = &scf->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_scgi_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_scgi_loc_conf_t *scf = conf;
ngx_str_t *value;
ngx_http_complex_value_t cv;
ngx_http_compile_complex_value_t ccv;
value = cf->args->elts;
if (scf->upstream.cache != NGX_CONF_UNSET) {
return "is duplicate";
}
if (ngx_strcmp(value[1].data, "off") == 0) {
scf->upstream.cache = 0;
return NGX_CONF_OK;
}
if (scf->upstream.store > 0) {
return "is incompatible with \"scgi_store\"";
}
scf->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) {
scf->upstream.cache_value = ngx_palloc(cf->pool,
sizeof(ngx_http_complex_value_t));
if (scf->upstream.cache_value == NULL) {
return NGX_CONF_ERROR;
}
*scf->upstream.cache_value = cv;
return NGX_CONF_OK;
}
scf->upstream.cache_zone = ngx_shared_memory_add(cf, &value[1], 0,
&ngx_http_scgi_module);
if (scf->upstream.cache_zone == NULL) {
return NGX_CONF_ERROR;
}
return NGX_CONF_OK;
}
static char *
ngx_http_scgi_cache_key(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_scgi_loc_conf_t *scf = conf;
ngx_str_t *value;
ngx_http_compile_complex_value_t ccv;
value = cf->args->elts;
if (scf->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 = &scf->cache_key;
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
return NGX_CONF_OK;
}
#endif