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nginx/nginx/1b8267cea2d953dc26c231dbba8bfc9d290a0f0c/./src/http/modules/ngx_http_fastcgi_module.c
blob: f3ea63a745339118c88b840428faf439bbfd1a60 [file]
/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
typedef struct {
ngx_http_upstream_conf_t upstream;
ngx_str_t index;
ngx_array_t *flushes;
ngx_array_t *params_len;
ngx_array_t *params;
ngx_array_t *params_source;
ngx_array_t *catch_stderr;
ngx_array_t *fastcgi_lengths;
ngx_array_t *fastcgi_values;
#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;
ngx_uint_t fastcgi_stdout; /* unsigned :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_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);
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_process_header(ngx_http_request_t *r);
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_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_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_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_int_t ngx_http_fastcgi_split(ngx_http_request_t *r,
ngx_http_fastcgi_ctx_t *f, 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);
static char *ngx_http_fastcgi_lowat_check(ngx_conf_t *cf, void *post,
void *data);
static char *ngx_http_fastcgi_upstream_max_fails_unsupported(ngx_conf_t *cf,
ngx_command_t *cmd, void *conf);
static char *ngx_http_fastcgi_upstream_fail_timeout_unsupported(ngx_conf_t *cf,
ngx_command_t *cmd, void *conf);
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("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 },
{ ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 },
{ ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
{ ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF },
{ ngx_null_string, 0 }
};
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_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_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_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),
(void *) ngx_garbage_collector_temp_handler },
{ 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_upstream_max_fails"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_fastcgi_upstream_max_fails_unsupported,
0,
0,
NULL },
{ ngx_string("fastcgi_upstream_fail_timeout"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_fastcgi_upstream_fail_timeout_unsupported,
0,
0,
NULL },
{ ngx_string("fastcgi_param"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
ngx_conf_set_keyval_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_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_FLAG,
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_FLAG,
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_catch_stderr"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_str_array_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, catch_stderr),
NULL },
ngx_null_command
};
static ngx_http_module_t ngx_http_fastcgi_module_ctx = {
ngx_http_fastcgi_add_variables, /* preconfiguration */
NULL, /* postconfiguration */
NULL, /* 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_null_string, NULL, NULL, 0, 0, 0 }
};
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
};
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 (r->subrequest_in_memory) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
"ngx_http_fastcgi_module does not support "
"subrequest in memory");
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
f = ngx_pcalloc(r->pool, sizeof(ngx_http_fastcgi_ctx_t));
if (f == NULL) {
return NGX_ERROR;
}
ngx_http_set_ctx(r, f, ngx_http_fastcgi_module);
u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));
if (u == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
r->upstream = u;
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->schema.len = sizeof("fastcgi://") - 1;
u->schema.data = (u_char *) "fastcgi://";
u->peer.log = r->connection->log;
u->peer.log_error = NGX_ERROR_ERR;
#if (NGX_THREADS)
u->peer.lock = &r->connection->lock;
#endif
u->output.tag = (ngx_buf_tag_t) &ngx_http_fastcgi_module;
u->conf = &flcf->upstream;
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;
u->buffering = 1;
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;
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 u;
ngx_memzero(&u, sizeof(ngx_url_t));
if (ngx_http_script_run(r, &u.url, flcf->fastcgi_lengths->elts, 0,
flcf->fastcgi_values->elts)
== NULL)
{
return NGX_ERROR;
}
u.no_resolve = 1;
if (ngx_parse_url(r->pool, &u) != NGX_OK) {
if (u.err) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"%s in upstream \"%V\"", u.err, &u.url);
}
return NGX_ERROR;
}
if (u.no_port) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"no port in upstream \"%V\"", &u.url);
return NGX_ERROR;
}
r->upstream->resolved = ngx_pcalloc(r->pool,
sizeof(ngx_http_upstream_resolved_t));
if (r->upstream->resolved == NULL) {
return NGX_ERROR;
}
if (u.addrs && u.addrs[0].sockaddr) {
r->upstream->resolved->sockaddr = u.addrs[0].sockaddr;
r->upstream->resolved->socklen = u.addrs[0].socklen;
r->upstream->resolved->naddrs = 1;
r->upstream->resolved->host = u.addrs[0].name;
} else {
r->upstream->resolved->host = u.host;
r->upstream->resolved->port = u.port;
}
return NGX_OK;
}
static ngx_int_t
ngx_http_fastcgi_create_request(ngx_http_request_t *r)
{
off_t file_pos;
u_char ch, *pos;
size_t size, len, key_len, val_len, padding;
ngx_uint_t i, n, next;
ngx_buf_t *b;
ngx_chain_t *cl, *body;
ngx_list_part_t *part;
ngx_table_elt_t *header;
ngx_http_script_code_pt code;
ngx_http_script_engine_t e, le;
ngx_http_fastcgi_header_t *h;
ngx_http_fastcgi_loc_conf_t *flcf;
ngx_http_script_len_code_pt lcode;
len = 0;
flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
if (flcf->params_len) {
ngx_memzero(&le, sizeof(ngx_http_script_engine_t));
ngx_http_script_flush_no_cacheable_variables(r, flcf->flushes);
le.flushed = 1;
le.ip = flcf->params_len->elts;
le.request = r;
while (*(uintptr_t *) le.ip) {
lcode = *(ngx_http_script_len_code_pt *) le.ip;
key_len = lcode(&le);
for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) {
lcode = *(ngx_http_script_len_code_pt *) le.ip;
}
le.ip += sizeof(uintptr_t);
len += 1 + key_len + ((val_len > 127) ? 4 : 1) + val_len;
}
}
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;
}
len += ((sizeof("HTTP_") - 1 + header[i].key.len > 127) ? 4 : 1)
+ ((header[i].value.len > 127) ? 4 : 1)
+ sizeof("HTTP_") - 1 + header[i].key.len + header[i].value.len;
}
}
if (len > 65535) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
"fastcgi request record is too big: %uz", len);
return NGX_ERROR;
}
padding = 8 - len % 8;
padding = (padding == 8) ? 0 : padding;
size = sizeof(ngx_http_fastcgi_header_t)
+ sizeof(ngx_http_fastcgi_begin_request_t)
+ sizeof(ngx_http_fastcgi_header_t) /* NGX_HTTP_FASTCGI_PARAMS */
+ len + padding
+ sizeof(ngx_http_fastcgi_header_t) /* NGX_HTTP_FASTCGI_PARAMS */
+ sizeof(ngx_http_fastcgi_header_t); /* NGX_HTTP_FASTCGI_STDIN */
b = ngx_create_temp_buf(r->pool, size);
if (b == NULL) {
return NGX_ERROR;
}
cl = ngx_alloc_chain_link(r->pool);
if (cl == NULL) {
return NGX_ERROR;
}
cl->buf = b;
ngx_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 (flcf->params_len) {
ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
e.ip = flcf->params->elts;
e.pos = b->last;
e.request = r;
e.flushed = 1;
le.ip = flcf->params_len->elts;
while (*(uintptr_t *) le.ip) {
lcode = *(ngx_http_script_len_code_pt *) le.ip;
key_len = (u_char) 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);
*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;
}
len = sizeof("HTTP_") - 1 + header[i].key.len;
if (len > 127) {
*b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80);
*b->last++ = (u_char) ((len >> 16) & 0xff);
*b->last++ = (u_char) ((len >> 8) & 0xff);
*b->last++ = (u_char) (len & 0xff);
} else {
*b->last++ = (u_char) len;
}
len = header[i].value.len;
if (len > 127) {
*b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80);
*b->last++ = (u_char) ((len >> 16) & 0xff);
*b->last++ = (u_char) ((len >> 8) & 0xff);
*b->last++ = (u_char) (len & 0xff);
} else {
*b->last++ = (u_char) 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 (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;
h = (ngx_http_fastcgi_header_t *) b->last;
b->last += sizeof(ngx_http_fastcgi_header_t);
if (flcf->upstream.pass_request_body) {
body = r->upstream->request_bufs;
r->upstream->request_bufs = cl;
#if (NGX_SUPPRESS_WARN)
file_pos = 0;
pos = NULL;
#endif
while (body) {
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;
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->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;
}
h = (ngx_http_fastcgi_header_t *) b->last;
b->last += sizeof(ngx_http_fastcgi_header_t);
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 {
r->upstream->request_bufs = cl;
}
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;
return NGX_OK;
}
static ngx_int_t
ngx_http_fastcgi_process_header(ngx_http_request_t *r)
{
u_char *p, *start, *last, *part_start;
size_t size;
ngx_str_t *status_line, 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: %d",
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 closed prematurely 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) {
line.data = u->buffer.pos;
if (u->buffer.pos + f->length <= u->buffer.last) {
line.len = f->length;
u->buffer.pos += f->length;
f->length = 0;
f->state = ngx_http_fastcgi_st_padding;
} else {
line.len = u->buffer.last - u->buffer.pos;
f->length -= u->buffer.last - u->buffer.pos;
u->buffer.pos = u->buffer.last;
}
while (line.data[line.len - 1] == LF
|| line.data[line.len - 1] == CR
|| line.data[line.len - 1] == '.'
|| line.data[line.len - 1] == ' ')
{
line.len--;
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"FastCGI sent in stderr: \"%V\"", &line);
flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
if (flcf->catch_stderr) {
pattern = flcf->catch_stderr->elts;
line.data[line.len - 1] = '\0';
for (i = 0; i < flcf->catch_stderr->nelts; i++) {
if (ngx_strstr(line.data, pattern[i].data)) {
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
*/
u->buffer.pos = u->buffer.start;
u->buffer.last = u->buffer.start;
}
return NGX_AGAIN;
}
} else {
f->state = ngx_http_fastcgi_st_version;
}
continue;
}
/* f->type == NGX_HTTP_FASTCGI_STDOUT */
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;
rc = ngx_http_parse_header_line(r, &u->buffer, 1);
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fastcgi parser: %d", 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) {
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);
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) {
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_cpystrn(h->key.data, r->header_name_start,
h->key.len + 1);
ngx_cpystrn(h->value.data, r->header_start,
h->value.len + 1);
}
h->hash = r->header_hash;
if (h->key.len == r->lowcase_index) {
ngx_memcpy(h->lowcase_key, r->lowcase_header, h->key.len);
} else {
ngx_strlow(h->lowcase_key, h->key.data, h->key.len);
}
hh = ngx_hash_find(&umcf->headers_in_hash, h->hash,
h->lowcase_key, h->key.len);
if (hh && hh->handler(r, h, hh->offset) != NGX_OK) {
return NGX_ERROR;
}
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fastcgi header: \"%V: %V\"",
&h->key, &h->value);
if (u->buffer.pos < u->buffer.last) {
continue;
}
/* the end of the FastCGI record */
break;
}
if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
/* a whole header has been parsed successfully */
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fastcgi header done");
if (u->headers_in.status) {
status_line = &u->headers_in.status->value;
status = ngx_atoi(status_line->data, 3);
if (status == NGX_ERROR) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent invalid status \"%V\"",
status_line);
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
u->headers_in.status_n = status;
u->headers_in.status_line = *status_line;
} else if (u->headers_in.location) {
u->headers_in.status_n = 302;
u->headers_in.status_line.len =
sizeof("302 Moved Temporarily") - 1;
u->headers_in.status_line.data =
(u_char *) "302 Moved Temporarily";
} else {
u->headers_in.status_n = 200;
u->headers_in.status_line.len = sizeof("200 OK") - 1;
u->headers_in.status_line.data = (u_char *) "200 OK";
}
u->state->status = u->headers_in.status_n;
#if 0
if (u->cacheable) {
u->cacheable = ngx_http_upstream_is_cacheable(r);
}
#endif
break;
}
/* there was error while a header line parsing */
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent invalid header");
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
if (last) {
u->buffer.last = last;
}
f->length -= u->buffer.pos - start;
if (f->length == 0) {
if (f->padding) {
f->state = ngx_http_fastcgi_st_padding;
} else {
f->state = ngx_http_fastcgi_st_version;
}
}
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);
part->start = part_start;
part->end = u->buffer.last;
return NGX_AGAIN;
}
}
static ngx_int_t
ngx_http_fastcgi_input_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
{
ngx_int_t rc;
ngx_buf_t *b, **prev;
ngx_str_t line;
ngx_chain_t *cl;
ngx_http_request_t *r;
ngx_http_fastcgi_ctx_t *f;
if (buf->pos == buf->last) {
return NGX_OK;
}
r = p->input_ctx;
f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
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_version;
p->upstream_done = 1;
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, p->log, 0,
"http fastcgi closed stdout");
continue;
}
if (f->type == NGX_HTTP_FASTCGI_END_REQUEST) {
f->state = ngx_http_fastcgi_st_version;
p->upstream_done = 1;
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, p->log, 0,
"http fastcgi sent end request");
break;
}
}
if (f->state == ngx_http_fastcgi_st_padding) {
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;
}
line.data = f->pos;
if (f->pos + f->length <= f->last) {
line.len = f->length;
f->pos += f->length;
f->length = 0;
f->state = ngx_http_fastcgi_st_padding;
} else {
line.len = f->last - f->pos;
f->length -= f->last - f->pos;
f->pos = f->last;
}
while (line.data[line.len - 1] == LF
|| line.data[line.len - 1] == CR
|| line.data[line.len - 1] == '.'
|| line.data[line.len - 1] == ' ')
{
line.len--;
}
ngx_log_error(NGX_LOG_ERR, p->log, 0,
"FastCGI sent in stderr: \"%V\"", &line);
if (f->pos == f->last) {
break;
}
} else {
f->state = ngx_http_fastcgi_st_version;
}
continue;
}
/* f->type == NGX_HTTP_FASTCGI_STDOUT */
if (f->pos == f->last) {
break;
}
if (p->free) {
b = p->free->buf;
p->free = p->free->next;
} else {
b = ngx_alloc_buf(p->pool);
if (b == NULL) {
return NGX_ERROR;
}
}
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;
cl = ngx_alloc_chain_link(p->pool);
if (cl == NULL) {
return NGX_ERROR;
}
cl->buf = b;
cl->next = NULL;
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) {
if (f->padding) {
f->state = ngx_http_fastcgi_st_padding;
} else {
f->state = ngx_http_fastcgi_st_version;
}
f->pos += f->length;
b->last = f->pos;
continue;
}
if (f->pos + f->length == f->last) {
if (f->padding) {
f->state = ngx_http_fastcgi_st_padding;
} else {
f->state = ngx_http_fastcgi_st_version;
}
b->last = f->last;
break;
}
f->length -= f->last - f->pos;
b->last = f->last;
break;
}
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_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->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_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 NGX_CONF_ERROR;
}
/*
* set by ngx_pcalloc():
*
* conf->upstream.bufs.num = 0;
* conf->upstream.next_upstream = 0;
* conf->upstream.temp_path = NULL;
* conf->upstream.hide_headers_hash = { NULL, 0 };
* conf->upstream.uri = { 0, NULL };
* conf->upstream.location = NULL;
* conf->upstream.store_lengths = NULL;
* conf->upstream.store_values = NULL;
*
* conf->index.len = 0;
* conf->index.data = NULL;
*/
conf->upstream.store = NGX_CONF_UNSET;
conf->upstream.store_access = NGX_CONF_UNSET_UINT;
conf->upstream.buffering = NGX_CONF_UNSET;
conf->upstream.ignore_client_abort = 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.send_lowat = NGX_CONF_UNSET_SIZE;
conf->upstream.buffer_size = 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;
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->catch_stderr = NGX_CONF_UNSET_PTR;
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;
u_char *p;
size_t size;
uintptr_t *code;
ngx_uint_t i;
ngx_keyval_t *src;
ngx_hash_init_t hash;
ngx_http_script_compile_t sc;
ngx_http_script_copy_code_t *copy;
if (conf->upstream.store != 0) {
ngx_conf_merge_value(conf->upstream.store,
prev->upstream.store, 0);
if (conf->upstream.store_lengths == NULL) {
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_value(conf->upstream.buffering,
prev->upstream.buffering, 1);
ngx_conf_merge_value(conf->upstream.ignore_client_abort,
prev->upstream.ignore_client_abort, 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_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_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 or bigger than "
"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 or bigger than "
"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 "
"the temporary files usage or must be equal or bigger than "
"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.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;
}
ngx_conf_merge_path_value(conf->upstream.temp_path,
prev->upstream.temp_path,
NGX_HTTP_FASTCGI_TEMP_PATH, 1, 2, 0,
ngx_garbage_collector_temp_handler, cf);
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_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;
}
if (conf->upstream.upstream == NULL) {
conf->upstream.upstream = prev->upstream.upstream;
}
if (conf->fastcgi_lengths == NULL) {
conf->fastcgi_lengths = prev->fastcgi_lengths;
conf->fastcgi_values = prev->fastcgi_values;
}
#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->flushes = prev->flushes;
conf->params_len = prev->params_len;
conf->params = prev->params;
conf->params_source = prev->params_source;
if (conf->params_source == NULL) {
return NGX_CONF_OK;
}
}
conf->params_len = ngx_array_create(cf->pool, 64, 1);
if (conf->params_len == NULL) {
return NGX_CONF_ERROR;
}
conf->params = ngx_array_create(cf->pool, 512, 1);
if (conf->params == NULL) {
return NGX_CONF_ERROR;
}
src = conf->params_source->elts;
for (i = 0; i < conf->params_source->nelts; i++) {
if (ngx_http_script_variables_count(&src[i].value) == 0) {
copy = ngx_array_push_n(conf->params_len,
sizeof(ngx_http_script_copy_code_t));
if (copy == NULL) {
return NGX_CONF_ERROR;
}
copy->code = (ngx_http_script_code_pt)
ngx_http_script_copy_len_code;
copy->len = src[i].key.len;
copy = ngx_array_push_n(conf->params_len,
sizeof(ngx_http_script_copy_code_t));
if (copy == NULL) {
return NGX_CONF_ERROR;
}
copy->code = (ngx_http_script_code_pt)
ngx_http_script_copy_len_code;
copy->len = src[i].value.len;
size = (sizeof(ngx_http_script_copy_code_t)
+ src[i].key.len + src[i].value.len
+ sizeof(uintptr_t) - 1)
& ~(sizeof(uintptr_t) - 1);
copy = ngx_array_push_n(conf->params, size);
if (copy == NULL) {
return NGX_CONF_ERROR;
}
copy->code = ngx_http_script_copy_code;
copy->len = src[i].key.len + src[i].value.len;
p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
p = ngx_cpymem(p, src[i].key.data, src[i].key.len);
ngx_memcpy(p, src[i].value.data, src[i].value.len);
} else {
copy = ngx_array_push_n(conf->params_len,
sizeof(ngx_http_script_copy_code_t));
if (copy == NULL) {
return NGX_CONF_ERROR;
}
copy->code = (ngx_http_script_code_pt)
ngx_http_script_copy_len_code;
copy->len = src[i].key.len;
size = (sizeof(ngx_http_script_copy_code_t)
+ src[i].key.len + sizeof(uintptr_t) - 1)
& ~(sizeof(uintptr_t) - 1);
copy = ngx_array_push_n(conf->params, size);
if (copy == NULL) {
return NGX_CONF_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 = &conf->flushes;
sc.lengths = &conf->params_len;
sc.values = &conf->params;
if (ngx_http_script_compile(&sc) != NGX_OK) {
return NGX_CONF_ERROR;
}
}
code = ngx_array_push_n(conf->params_len, sizeof(uintptr_t));
if (code == NULL) {
return NGX_CONF_ERROR;
}
*code = (uintptr_t) NULL;
code = ngx_array_push_n(conf->params, sizeof(uintptr_t));
if (code == NULL) {
return NGX_CONF_ERROR;
}
*code = (uintptr_t) NULL;
}
code = ngx_array_push_n(conf->params_len, sizeof(uintptr_t));
if (code == NULL) {
return NGX_CONF_ERROR;
}
*code = (uintptr_t) NULL;
return NGX_CONF_OK;
}
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;
f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
if (ngx_http_fastcgi_split(r, f, flcf) != NGX_OK) {
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;
f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
if (ngx_http_fastcgi_split(r, f, flcf) != NGX_OK) {
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_int_t
ngx_http_fastcgi_split(ngx_http_request_t *r, ngx_http_fastcgi_ctx_t *f,
ngx_http_fastcgi_loc_conf_t *flcf)
{
#if (NGX_PCRE)
ngx_int_t n;
int captures[(1 + 2) * 3];
if (f->script_name.len) {
return NGX_OK;
}
if (flcf->split_regex == NULL) {
f->script_name = r->uri;
return NGX_OK;
}
n = ngx_regex_exec(flcf->split_regex, &r->uri, captures, (1 + 2) * 3);
if (n == NGX_REGEX_NO_MATCHED) {
f->script_name = r->uri;
return NGX_OK;
}
if (n < 0) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
ngx_regex_exec_n " failed: %d on \"%V\" using \"%V\"",
n, &r->uri, &flcf->split_name);
return NGX_ERROR;
}
/* match */
f->script_name.len = captures[3] - captures[2];
f->script_name.data = r->uri.data;
f->path_info.len = captures[5] - captures[4];
f->path_info.data = r->uri.data + f->script_name.len;
return NGX_OK;
#else
f->script_name = r->uri;
return NGX_OK;
#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;
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;
}
if (clcf->name.data[clcf->name.len - 1] == '/') {
clcf->auto_redirect = 1;
}
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_int_t n;
ngx_str_t *value, err;
u_char errstr[NGX_MAX_CONF_ERRSTR];
value = cf->args->elts;
flcf->split_name = value[1];
err.len = NGX_MAX_CONF_ERRSTR;
err.data = errstr;
flcf->split_regex = ngx_regex_compile(&value[1], 0, cf->pool, &err);
if (flcf->split_regex == NULL) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", err.data);
return NGX_CONF_ERROR;
}
n = ngx_regex_capture_count(flcf->split_regex);
if (n < 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
ngx_regex_capture_count_n " failed for "
"pattern \"%V\"", &value[1]);
return NGX_CONF_ERROR;
}
if (n != 2) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"pattern \"%V\" must have 2 captures", &value[1]);
return NGX_CONF_ERROR;
}
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 || flcf->upstream.store_lengths)
{
return "is duplicate";
}
value = cf->args->elts;
if (ngx_strcmp(value[1].data, "on") == 0) {
flcf->upstream.store = 1;
return NGX_CONF_OK;
}
if (ngx_strcmp(value[1].data, "off") == 0) {
flcf->upstream.store = 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;
}
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;
}
static char *
ngx_http_fastcgi_upstream_max_fails_unsupported(ngx_conf_t *cf,
ngx_command_t *cmd, void *conf)
{
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"fastcgi_upstream_max_fails\" is not supported, "
"use the \"max_fails\" parameter of the \"server\" directive ",
"inside the \"upstream\" block");
return NGX_CONF_ERROR;
}
static char *
ngx_http_fastcgi_upstream_fail_timeout_unsupported(ngx_conf_t *cf,
ngx_command_t *cmd, void *conf)
{
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"fastcgi_upstream_fail_timeout\" is not supported, "
"use the \"fail_timeout\" parameter of the \"server\" directive ",
"inside the \"upstream\" block");
return NGX_CONF_ERROR;
}