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nginx/nginx/4d656dcd0bd6309b0ec76fc444198ed6c2948a8e/./src/http/modules/ngx_http_fastcgi_module.c
blob: 986215ba0f6fc961cf5295d4372f0e21b6b1ab44 [file]
/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#include <nginx.h>
typedef struct {
ngx_http_upstream_conf_t upstream;
ngx_peers_t *peers;
ngx_uint_t params;
ngx_str_t root;
ngx_str_t index;
ngx_array_t *vars;
ngx_str_t *location;
} ngx_http_fastcgi_loc_conf_t;
typedef struct {
ngx_list_t headers;
ngx_table_elt_t *status;
ngx_table_elt_t *content_type;
ngx_table_elt_t *content_length;
ngx_table_elt_t *x_powered_by;
#if (NGX_HTTP_GZIP)
ngx_table_elt_t *content_encoding;
#endif
} ngx_http_fastcgi_headers_in_t;
typedef struct {
ngx_http_fastcgi_headers_in_t headers_in;
} ngx_http_fastcgi_upstream_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 {
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 header;
ngx_http_fastcgi_upstream_t *upstream;
} ngx_http_fastcgi_ctx_t;
#define NGX_HTTP_FASTCGI_REMOTE_ADDR 0x00000002
#define NGX_HTTP_FASTCGI_REMOTE_USER 0x00000004
#define NGX_HTTP_FASTCGI_SERVER_NAME 0x00000008
#define NGX_HTTP_FASTCGI_SERVER_ADDR 0x00000010
#define NGX_HTTP_FASTCGI_SERVER_PORT 0x00000020
#define NGX_HTTP_FASTCGI_SCRIPT_NAME 0x00000040
#define NGX_HTTP_FASTCGI_AUTH_TYPE 0x00000080
#define NGX_HTTP_FASTCGI_SERVER_PROTOCOL 0x00000100
#define NGX_HTTP_FASTCGI_SERVER_SOFTWARE 0x00000200
#define NGX_HTTP_FASTCGI_GATEWAY_INTERFACE 0x00000400
#define NGX_HTTP_FASTCGI_REQUEST_URI 0x00000800
#define NGX_HTTP_FASTCGI_REDIRECT_STATUS 0x00001000
#define NGX_HTTP_FASTCGI_DOCUMENT_ROOT 0x00002000
#define NGX_HTTP_FASTCGI_SCRIPT_FILENAME 0x00004000
#define NGX_HTTP_FASTCGI_REMOTE_PORT 0x00008000
#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;
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_send_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 char *ngx_http_fastcgi_pass(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_http_fastcgi_set_var(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 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_str_t ngx_http_fastcgi_methods[] = {
ngx_string("GET"),
ngx_string("HEAD"),
ngx_string("POST")
};
#if (NGX_PCRE)
static ngx_str_t ngx_http_fastcgi_uri = ngx_string("/");
#endif
static ngx_http_header_t ngx_http_fastcgi_headers_in[] = {
{ ngx_string("Status"), offsetof(ngx_http_fastcgi_headers_in_t, status) },
{ ngx_string("Content-Type"),
offsetof(ngx_http_fastcgi_headers_in_t, content_type) },
{ ngx_string("Content-Length"),
offsetof(ngx_http_fastcgi_headers_in_t, content_length) },
{ ngx_string("X-Powered-By"),
offsetof(ngx_http_fastcgi_headers_in_t, x_powered_by) },
#if (NGX_HTTP_GZIP)
{ ngx_string("Content-Encoding"),
offsetof(ngx_http_fastcgi_headers_in_t, content_encoding) },
#endif
{ ngx_null_string, 0 }
};
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_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
{ ngx_null_string, 0 }
};
static ngx_conf_bitmask_t ngx_http_fastcgi_params_masks[] = {
{ ngx_string("remote_addr"), NGX_HTTP_FASTCGI_REMOTE_ADDR },
{ ngx_string("server_port"), NGX_HTTP_FASTCGI_SERVER_PORT },
{ ngx_string("server_addr"), NGX_HTTP_FASTCGI_SERVER_ADDR },
{ ngx_string("server_name"), NGX_HTTP_FASTCGI_SERVER_NAME },
{ ngx_string("script_name"), NGX_HTTP_FASTCGI_SCRIPT_NAME },
{ ngx_string("server_protocol"), NGX_HTTP_FASTCGI_SERVER_PROTOCOL },
{ ngx_string("server_software"), NGX_HTTP_FASTCGI_SERVER_SOFTWARE },
{ ngx_string("gateway_interface"), NGX_HTTP_FASTCGI_GATEWAY_INTERFACE },
{ ngx_string("redirect_status"), NGX_HTTP_FASTCGI_REDIRECT_STATUS },
{ ngx_string("request_uri"), NGX_HTTP_FASTCGI_REQUEST_URI },
{ ngx_string("document_root"), NGX_HTTP_FASTCGI_DOCUMENT_ROOT },
{ ngx_string("script_filename"), NGX_HTTP_FASTCGI_SCRIPT_FILENAME },
{ ngx_string("remote_port"), NGX_HTTP_FASTCGI_REMOTE_PORT },
{ ngx_null_string, 0 }
};
static ngx_command_t ngx_http_fastcgi_commands[] = {
{ ngx_string("fastcgi_pass"),
NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_fastcgi_pass,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("fastcgi_root"),
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, root),
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_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_header_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.header_buffer_size),
NULL },
{ ngx_string("fastcgi_redirect_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.redirect_errors),
NULL },
{ ngx_string("fastcgi_x_powered_by"),
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.x_powered_by),
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),
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),
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),
NULL },
{ ngx_string("fastcgi_next_upstream"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY,
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_set_var"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_fastcgi_set_var,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("fastcgi_params"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY,
ngx_conf_set_bitmask_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_fastcgi_loc_conf_t, params),
&ngx_http_fastcgi_params_masks },
ngx_null_command
};
ngx_http_module_t ngx_http_fastcgi_module_ctx = {
NULL, /* pre conf */
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,
&ngx_http_fastcgi_module_ctx, /* module context */
ngx_http_fastcgi_commands, /* module directives */
NGX_HTTP_MODULE, /* module type */
NULL, /* init module */
NULL /* init process */
};
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_loc_conf_t *flcf;
flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));
if (u == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
u->peer.log = r->connection->log;
u->peer.log_error = NGX_ERROR_ERR;
u->peer.peers = flcf->peers;
u->peer.tries = flcf->peers->number;
#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->location = flcf->location;
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->send_header = ngx_http_fastcgi_send_header;
u->abort_request = ngx_http_fastcgi_abort_request;
u->finalize_request = ngx_http_fastcgi_finalize_request;
u->pipe.input_filter = ngx_http_fastcgi_input_filter;
u->pipe.input_ctx = r;
u->log_ctx = r->connection->log->data;
u->log_handler = ngx_http_upstream_log_error;
u->schema.len = sizeof("fastcgi://") - 1;
u->schema.data = (u_char *) "fastcgi://";
u->uri.len = sizeof("/") - 1;
u->uri.data = (u_char *) "/";
r->upstream = u;
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_create_request(ngx_http_request_t *r)
{
u_char ch, *pos, addr_text[INET_ADDRSTRLEN],
port_text[sizeof("65535") - 1];
size_t size, len, index, padding,
addr_len, port_len;
off_t file_pos;
ngx_buf_t *b;
socklen_t slen;
ngx_chain_t *cl, *body;
ngx_uint_t i, n, next, *vindex, port;
ngx_list_part_t *part;
ngx_table_elt_t *header;
struct sockaddr_in sin, *sinp;
ngx_http_variable_t *var;
ngx_http_variable_value_t *value;
ngx_http_core_loc_conf_t *clcf;
ngx_http_core_main_conf_t *cmcf;
ngx_http_fastcgi_header_t *h;
ngx_http_fastcgi_loc_conf_t *flcf;
ngx_http_fastcgi_begin_request_t *br;
flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
if ((flcf->params & NGX_HTTP_FASTCGI_SERVER_ADDR) && r->in_addr == 0) {
slen = sizeof(struct sockaddr_in);
if (getsockname(r->connection->fd,
(struct sockaddr *) &sin, &slen) == -1)
{
ngx_log_error(NGX_LOG_CRIT, r->connection->log,
ngx_socket_errno, "getsockname() failed");
return NGX_ERROR;
}
r->in_addr = sin.sin_addr.s_addr;
}
addr_len = ngx_inet_ntop(r->connection->listening->family, &r->in_addr,
addr_text, INET_ADDRSTRLEN);
if (addr_len == 0) {
return NGX_ERROR;
}
#if (NGX_SUPPRESS_WARN)
clcf = NULL;
var = NULL;
vindex = NULL;
#endif
if (r->upstream->method) {
len = 1 + 1 + sizeof("REQUEST_METHOD") - 1
+ ngx_http_fastcgi_methods[r->upstream->method - 1].len;
} else {
len = 1 + ((r->method_name.len - 1 > 127) ? 4 : 1)
+ sizeof("REQUEST_METHOD") - 1
+ r->method_name.len - 1;
}
index = (r->uri.data[r->uri.len - 1] == '/') ? flcf->index.len : 0;
len += 1 + ((flcf->root.len + r->uri.len + index > 127) ? 4 : 1)
+ sizeof("PATH_TRANSLATED") - 1 + flcf->root.len + r->uri.len + index;
if (r->args.len) {
len += 1 + ((r->args.len > 127) ? 4 : 1) + sizeof("QUERY_STRING") - 1
+ r->args.len;
}
if (r->headers_in.content_length_n > 0) {
len += 1 + ((r->headers_in.content_length->value.len > 127) ? 4 : 1)
+ sizeof("CONTENT_LENGTH") - 1
+ r->headers_in.content_length->value.len;
}
if (r->headers_in.content_type) {
len += 1 + ((r->headers_in.content_type->value.len > 127) ? 4 : 1)
+ sizeof("CONTENT_TYPE") - 1
+ r->headers_in.content_type->value.len;
}
if (flcf->params & NGX_HTTP_FASTCGI_REDIRECT_STATUS) {
len += 1 + 1 + sizeof("REDIRECT_STATUS200") - 1;
}
if (flcf->params & NGX_HTTP_FASTCGI_REQUEST_URI) {
len += 1 + ((r->unparsed_uri.len > 127) ? 4 : 1)
+ sizeof("REQUEST_URI") - 1 + r->unparsed_uri.len;
}
if (flcf->params & NGX_HTTP_FASTCGI_DOCUMENT_ROOT) {
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
len += 1 + ((clcf->root.len > 127) ? 4 : 1)
+ sizeof("DOCUMENT_ROOT") - 1 + clcf->root.len;
}
if (flcf->params & NGX_HTTP_FASTCGI_SCRIPT_FILENAME) {
len += 1 + ((flcf->root.len + r->uri.len + index > 127) ? 4 : 1)
+ sizeof("SCRIPT_FILENAME") - 1
+ flcf->root.len + r->uri.len + index;
}
if (flcf->params & NGX_HTTP_FASTCGI_SCRIPT_NAME) {
len += 1 + ((r->uri.len + index > 127) ? 4 : 1)
+ sizeof("SCRIPT_NAME") - 1 + r->uri.len + index ;
}
if (flcf->params & NGX_HTTP_FASTCGI_REMOTE_ADDR) {
len += 1 + 1 + sizeof("REMOTE_ADDR") - 1 + r->connection->addr_text.len;
}
port_len = 0;
if (flcf->params & NGX_HTTP_FASTCGI_REMOTE_PORT) {
/* AF_INET only */
if (r->connection->sockaddr->sa_family == AF_INET) {
sinp = (struct sockaddr_in *) r->connection->sockaddr;
port = ntohs(sinp->sin_port);
if (port > 0 && port < 65536) {
port_len = ngx_sprintf(port_text, "%ui", port) - port_text;
}
len += 1 + 1 + sizeof("REMOTE_PORT") - 1 + port_len;
}
}
if (flcf->params & NGX_HTTP_FASTCGI_SERVER_NAME) {
len += 1 + 1 + sizeof("SERVER_NAME") - 1 + r->server_name.len;
}
if (flcf->params & NGX_HTTP_FASTCGI_SERVER_PORT) {
len += 1 + 1 + sizeof("SERVER_PORT") - 1 + r->port_text->len - 1;
}
if (flcf->params & NGX_HTTP_FASTCGI_SERVER_ADDR) {
len += 1 + 1 + sizeof("SERVER_ADDR") - 1 + addr_len;
}
if (flcf->params & NGX_HTTP_FASTCGI_SERVER_PROTOCOL
&& r->http_protocol.len)
{
len += 1 + ((r->http_protocol.len > 127) ? 4 : 1)
+ sizeof("SERVER_PROTOCOL") - 1 + r->http_protocol.len;
}
if (flcf->params & NGX_HTTP_FASTCGI_SERVER_SOFTWARE) {
len += 1 + 1 + sizeof("SERVER_SOFTWARE") - 1 + sizeof(NGINX_VER) - 1;
}
if (flcf->params & NGX_HTTP_FASTCGI_GATEWAY_INTERFACE) {
len += 1 + 1 + sizeof("GATEWAY_INTERFACE") - 1 + sizeof("CGI/1.1") - 1;
}
if (flcf->vars) {
cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
var = cmcf->variables.elts;
vindex = flcf->vars->elts;
for (i = 0; i < flcf->vars->nelts; i++) {
value = ngx_http_get_indexed_variable(r, vindex[i]);
if (value == NULL) {
continue;
}
if (value->text.len) {
len += 1 + 1 + var[vindex[i]].name.len + value->text.len;
}
}
}
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 += ((header[i].key.len > 127) ? 4 : 1)
+ ((header[i].value.len > 127) ? 4 : 1)
+ 5 + header[i].key.len + header[i].value.len;
}
if (len > 65535) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
"fastcgi: the request record is too big");
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;
h = (ngx_http_fastcgi_header_t *) b->pos;
h->version = 1;
h->type = NGX_HTTP_FASTCGI_BEGIN_REQUEST;
h->request_id_hi = 0;
h->request_id_lo = 1;
h->content_length_hi = 0;
h->content_length_lo = sizeof(ngx_http_fastcgi_begin_request_t);
h->padding_length = 0;
h->reserved = 0;
br = (ngx_http_fastcgi_begin_request_t *)
(b->pos + sizeof(ngx_http_fastcgi_header_t));
br->role_hi = 0;
br->role_lo = NGX_HTTP_FASTCGI_RESPONDER;
br->flags = 0; /* NGX_HTTP_FASTCGI_KEEP_CONN */
br->reserved[0] = 0;
br->reserved[1] = 0;
br->reserved[2] = 0;
br->reserved[3] = 0;
br->reserved[4] = 0;
h = (ngx_http_fastcgi_header_t *)
(b->pos + sizeof(ngx_http_fastcgi_header_t)
+ sizeof(ngx_http_fastcgi_begin_request_t));
h->version = 1;
h->type = NGX_HTTP_FASTCGI_PARAMS;
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;
b->last = b->pos + sizeof(ngx_http_fastcgi_header_t)
+ sizeof(ngx_http_fastcgi_begin_request_t)
+ sizeof(ngx_http_fastcgi_header_t);
*b->last++ = sizeof("PATH_TRANSLATED") - 1;
len = flcf->root.len + r->uri.len + index;
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, "PATH_TRANSLATED",
sizeof("PATH_TRANSLATED") - 1);
b->last = ngx_cpymem(b->last, flcf->root.data, flcf->root.len);
b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
if (index) {
b->last = ngx_cpymem(b->last, flcf->index.data, index);
}
*b->last++ = sizeof("REQUEST_METHOD") - 1;
if (r->upstream->method) {
*b->last++ = (u_char)
ngx_http_fastcgi_methods[r->upstream->method - 1].len;
b->last = ngx_cpymem(b->last, "REQUEST_METHOD",
sizeof("REQUEST_METHOD") - 1);
b->last = ngx_cpymem(b->last,
ngx_http_fastcgi_methods[r->upstream->method - 1].data,
ngx_http_fastcgi_methods[r->upstream->method - 1].len);
} else {
len = r->method_name.len - 1;
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, "REQUEST_METHOD",
sizeof("REQUEST_METHOD") - 1);
b->last = ngx_cpymem(b->last, r->method_name.data, len);
}
if (r->args.len) {
*b->last++ = sizeof("QUERY_STRING") - 1;
len = r->args.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, "QUERY_STRING",
sizeof("QUERY_STRING") - 1);
b->last = ngx_cpymem(b->last, r->args.data, len);
}
if (r->headers_in.content_length_n > 0) {
*b->last++ = sizeof("CONTENT_LENGTH") - 1;
len = r->headers_in.content_length->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, "CONTENT_LENGTH",
sizeof("CONTENT_LENGTH") - 1);
b->last = ngx_cpymem(b->last, r->headers_in.content_length->value.data,
len);
}
if (r->headers_in.content_type) {
*b->last++ = sizeof("CONTENT_TYPE") - 1;
len = r->headers_in.content_type->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, "CONTENT_TYPE",
sizeof("CONTENT_TYPE") - 1);
b->last = ngx_cpymem(b->last, r->headers_in.content_type->value.data,
len);
}
if (flcf->params & NGX_HTTP_FASTCGI_REDIRECT_STATUS) {
*b->last++ = sizeof("REDIRECT_STATUS") - 1;
*b->last++ = sizeof("200") - 1;
b->last = ngx_cpymem(b->last, "REDIRECT_STATUS200",
sizeof("REDIRECT_STATUS200") - 1);
}
if (flcf->params & NGX_HTTP_FASTCGI_REQUEST_URI) {
*b->last++ = sizeof("REQUEST_URI") - 1;
len = r->unparsed_uri.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, "REQUEST_URI", sizeof("REQUEST_URI") - 1);
b->last = ngx_cpymem(b->last, r->unparsed_uri.data, len);
}
if (flcf->params & NGX_HTTP_FASTCGI_DOCUMENT_ROOT) {
*b->last++ = sizeof("DOCUMENT_ROOT") - 1;
len = clcf->root.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, "DOCUMENT_ROOT",
sizeof("DOCUMENT_ROOT") - 1);
b->last = ngx_cpymem(b->last, clcf->root.data, len);
}
if (flcf->params & NGX_HTTP_FASTCGI_SCRIPT_FILENAME) {
*b->last++ = sizeof("SCRIPT_FILENAME") - 1;
len = flcf->root.len + r->uri.len + index;
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, "SCRIPT_FILENAME",
sizeof("SCRIPT_FILENAME") - 1);
b->last = ngx_cpymem(b->last, flcf->root.data, flcf->root.len);
b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
if (index) {
b->last = ngx_cpymem(b->last, flcf->index.data, index);
}
}
if (flcf->params & NGX_HTTP_FASTCGI_SCRIPT_NAME) {
*b->last++ = sizeof("SCRIPT_NAME") - 1;
len = r->uri.len + index;
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, "SCRIPT_NAME", sizeof("SCRIPT_NAME") - 1);
b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
if (index) {
b->last = ngx_cpymem(b->last, flcf->index.data, index);
}
}
if (flcf->params & NGX_HTTP_FASTCGI_REMOTE_ADDR) {
*b->last++ = sizeof("REMOTE_ADDR") - 1;
*b->last++ = (u_char) (r->connection->addr_text.len);
b->last = ngx_cpymem(b->last, "REMOTE_ADDR", sizeof("REMOTE_ADDR") - 1);
b->last = ngx_cpymem(b->last, r->connection->addr_text.data,
r->connection->addr_text.len);
}
if (port_len) {
*b->last++ = sizeof("REMOTE_PORT") - 1;
*b->last++ = (u_char) port_len;
b->last = ngx_cpymem(b->last, "REMOTE_PORT", sizeof("REMOTE_PORT") - 1);
b->last = ngx_cpymem(b->last, port_text, port_len);
}
if (flcf->params & NGX_HTTP_FASTCGI_SERVER_NAME) {
*b->last++ = sizeof("SERVER_NAME") - 1;
*b->last++ = (u_char) r->server_name.len;
b->last = ngx_cpymem(b->last, "SERVER_NAME", sizeof("SERVER_NAME") - 1);
b->last = ngx_cpymem(b->last, r->server_name.data, r->server_name.len);
}
if (flcf->params & NGX_HTTP_FASTCGI_SERVER_PORT) {
*b->last++ = sizeof("SERVER_PORT") - 1;
*b->last++ = (u_char) (r->port_text->len - 1);
b->last = ngx_cpymem(b->last, "SERVER_PORT", sizeof("SERVER_PORT") - 1);
b->last = ngx_cpymem(b->last, r->port_text->data + 1,
r->port_text->len - 1);
}
if (flcf->params & NGX_HTTP_FASTCGI_SERVER_ADDR) {
*b->last++ = sizeof("SERVER_ADDR") - 1;
*b->last++ = (u_char) addr_len;
b->last = ngx_cpymem(b->last, "SERVER_ADDR", sizeof("SERVER_ADDR") - 1);
b->last = ngx_cpymem(b->last, addr_text, addr_len);
}
if (flcf->params & NGX_HTTP_FASTCGI_SERVER_PROTOCOL
&& r->http_protocol.len)
{
*b->last++ = sizeof("SERVER_PROTOCOL") - 1;
len = r->http_protocol.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, "SERVER_PROTOCOL",
sizeof("SERVER_PROTOCOL") - 1);
b->last = ngx_cpymem(b->last, r->http_protocol.data, len);
}
if (flcf->params & NGX_HTTP_FASTCGI_SERVER_SOFTWARE) {
*b->last++ = sizeof("SERVER_SOFTWARE") - 1;
*b->last++ = (u_char) (sizeof(NGINX_VER) - 1);
b->last = ngx_cpymem(b->last, "SERVER_SOFTWARE",
sizeof("SERVER_SOFTWARE") - 1);
b->last = ngx_cpymem(b->last, NGINX_VER, sizeof(NGINX_VER) - 1);
}
if (flcf->params & NGX_HTTP_FASTCGI_GATEWAY_INTERFACE) {
*b->last++ = sizeof("GATEWAY_INTERFACE") - 1;
*b->last++ = (u_char) (sizeof("CGI/1.1") - 1);
b->last = ngx_cpymem(b->last, "GATEWAY_INTERFACE",
sizeof("GATEWAY_INTERFACE") - 1);
b->last = ngx_cpymem(b->last, "CGI/1.1", sizeof("CGI/1.1") - 1);
}
if (flcf->vars) {
for (i = 0; i < flcf->vars->nelts; i++) {
value = ngx_http_get_indexed_variable(r, vindex[i]);
if (value == NULL) {
continue;
}
if (value->text.len == 0) {
continue;
}
*b->last++ = (u_char) var[vindex[i]].name.len;
*b->last++ = (u_char) value->text.len;
b->last = ngx_cpymem(b->last, var[vindex[i]].name.data,
var[vindex[i]].name.len);
b->last = ngx_cpymem(b->last, value->text.data, value->text.len);
}
}
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 = 5 + 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_cpymem(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);
body = r->request_body->bufs;
r->request_body->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;
}
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->header = 0;
ngx_memzero(&f->upstream->headers_in,
sizeof(ngx_http_fastcgi_headers_in_t));
if (f->upstream->headers_in.headers.part.elts) {
if (ngx_list_init(&f->upstream->headers_in.headers, r->pool, 8,
sizeof(ngx_table_elt_t)) == NGX_ERROR)
{
return NGX_ERROR;
}
}
return NGX_OK;
}
static ngx_int_t ngx_http_fastcgi_process_header(ngx_http_request_t *r)
{
u_char *start, *last;
ngx_str_t *status_line, line;
ngx_int_t rc, status;
ngx_uint_t i;
ngx_table_elt_t *h;
ngx_http_upstream_t *u;
ngx_http_fastcgi_ctx_t *f;
f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
if (f == NULL) {
f = ngx_pcalloc(r->pool, sizeof(ngx_http_fastcgi_ctx_t));
if (f == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_http_set_ctx(r, f, ngx_http_fastcgi_module);
f->upstream = ngx_pcalloc(r->pool, sizeof(ngx_http_fastcgi_upstream_t));
if (f->upstream == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_list_init(&f->upstream->headers_in.headers, r->pool, 8,
sizeof(ngx_table_elt_t)) == NGX_ERROR)
{
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
}
u = r->upstream;
for ( ;; ) {
if (f->state < ngx_http_fastcgi_st_data) {
f->pos = u->header_in.pos;
f->last = u->header_in.last;
rc = ngx_http_fastcgi_process_record(r, f);
u->header_in.pos = f->pos;
u->header_in.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->header_in.pos + f->padding < u->header_in.last) {
f->state = ngx_http_fastcgi_st_version;
u->header_in.pos += f->padding;
continue;
}
if (u->header_in.pos + f->padding == u->header_in.last) {
f->state = ngx_http_fastcgi_st_version;
u->header_in.pos = u->header_in.last;
return NGX_AGAIN;
}
f->padding -= u->header_in.last - u->header_in.pos;
u->header_in.pos = u->header_in.last;
return NGX_AGAIN;
}
/* f->state == ngx_http_fastcgi_st_data */
if (f->type == NGX_HTTP_FASTCGI_STDERR) {
if (f->header) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
"upstream split a header in FastCGI records");
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
if (f->length) {
line.data = u->header_in.pos;
if (u->header_in.pos + f->length <= u->header_in.last) {
line.len = f->length;
u->header_in.pos += f->length;
f->length = 0;
f->state = ngx_http_fastcgi_st_padding;
} else {
line.len = u->header_in.last - u->header_in.pos;
f->length -= u->header_in.last - u->header_in.pos;
u->header_in.pos = u->header_in.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);
if (u->header_in.pos == u->header_in.last) {
return NGX_AGAIN;
}
} else {
f->state = ngx_http_fastcgi_st_version;
}
continue;
}
/* f->type == NGX_HTTP_FASTCGI_STDOUT */
start = u->header_in.pos;
if (u->header_in.pos + f->length < u->header_in.last) {
/*
* set u->header_in.last to the end of the FastCGI record data
* for ngx_http_parse_header_line()
*/
last = u->header_in.last;
u->header_in.last = u->header_in.pos + f->length;
} else {
last = NULL;
}
f->header = 1;
for ( ;; ) {
rc = ngx_http_parse_header_line(r, &u->header_in);
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(&f->upstream->headers_in.headers);
if (h == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
h->key.len = r->header_name_end - r->header_name_start;
h->value.len = r->header_end - r->header_start;
h->key.data = ngx_palloc(r->pool,
h->key.len + 1 + h->value.len + 1);
if (h->key.data == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
h->value.data = h->key.data + h->key.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);
for (i = 0; ngx_http_fastcgi_headers_in[i].name.len != 0; i++) {
if (ngx_http_fastcgi_headers_in[i].name.len != h->key.len) {
continue;
}
if (ngx_strcasecmp(ngx_http_fastcgi_headers_in[i].name.data,
h->key.data) == 0)
{
*((ngx_table_elt_t **)
((char *) &f->upstream->headers_in
+ ngx_http_fastcgi_headers_in[i].offset)) = h;
break;
}
}
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fastcgi 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 fastcgi header done");
if (f->upstream->headers_in.status) {
status_line = &f->upstream->headers_in.status->value;
status = ngx_atoi(status_line->data, 3);
if (status == NGX_ERROR) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
r->headers_out.status = status;
r->headers_out.status_line = *status_line;
} else {
r->headers_out.status = 200;
r->headers_out.status_line.len = sizeof("200 OK") - 1;
r->headers_out.status_line.data = (u_char *) "200 OK";
}
u->state->status = r->headers_out.status;
#if 0
if (u->cachable) {
u->cachable = ngx_http_upstream_is_cachable(r);
}
#endif
break;
}
/* there was error while a header line parsing */
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
ngx_http_upstream_header_errors[rc
- NGX_HTTP_PARSE_HEADER_ERROR]);
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
if (last) {
u->header_in.last = last;
}
f->length -= u->header_in.pos - start;
if (rc == NGX_AGAIN) {
if (u->header_in.pos == u->header_in.last) {
return NGX_AGAIN;
}
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
"upstream split a header in FastCGI records");
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
if (f->length == 0) {
if (f->padding) {
f->state = ngx_http_fastcgi_st_padding;
} else {
f->state = ngx_http_fastcgi_st_version;
}
}
return NGX_OK;
}
}
static ngx_int_t
ngx_http_fastcgi_send_header(ngx_http_request_t *r)
{
ngx_uint_t i;
ngx_list_part_t *part;
ngx_table_elt_t *ho, *h;
ngx_http_fastcgi_ctx_t *f;
ngx_http_fastcgi_headers_in_t *headers_in;
f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
headers_in = &f->upstream->headers_in;
part = &headers_in->headers.part;
h = part->elts;
for (i = 0; /* void */; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
h = part->elts;
i = 0;
}
/* ignore some headers */
if (&h[i] == headers_in->status) {
continue;
}
if (&h[i] == headers_in->x_powered_by
&& !r->upstream->conf->x_powered_by)
{
continue;
}
/* "Content-Type" is handled specially */
if (&h[i] == headers_in->content_type) {
r->headers_out.content_type = &h[i];
r->headers_out.content_type->key.len = 0;
continue;
}
/* copy some header pointers and set up r->headers_out */
ho = ngx_list_push(&r->headers_out.headers);
if (ho == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
*ho = h[i];
#if (NGX_HTTP_GZIP)
if (&h[i] == headers_in->content_encoding) {
r->headers_out.content_encoding = ho;
continue;
}
#endif
if (&h[i] == headers_in->content_length) {
r->headers_out.content_length = ho;
r->headers_out.content_length_n = ngx_atoi(ho->value.data,
ho->value.len);
continue;
}
}
return ngx_http_send_header(r);
}
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) {
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 (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_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0, "input buf #%d", b->num);
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;
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->pos = p + 1;
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 char *
ngx_http_fastcgi_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_fastcgi_loc_conf_t *lcf = conf;
ngx_str_t *value;
ngx_inet_upstream_t inet_upstream;
ngx_http_core_loc_conf_t *clcf;
#if (NGX_HAVE_UNIX_DOMAIN)
ngx_unix_domain_upstream_t unix_upstream;
#endif
value = cf->args->elts;
if (ngx_strncasecmp(value[1].data, "unix:", 5) == 0) {
#if (NGX_HAVE_UNIX_DOMAIN)
ngx_memzero(&unix_upstream, sizeof(ngx_unix_domain_upstream_t));
unix_upstream.name = value[1];
unix_upstream.url = value[1];
lcf->peers = ngx_unix_upstream_parse(cf, &unix_upstream);
if (lcf->peers == NULL) {
return NGX_CONF_ERROR;
}
#else
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"the unix domain sockets are not supported "
"on this platform");
return NGX_CONF_ERROR;
#endif
} else {
ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t));
inet_upstream.name = value[1];
inet_upstream.url = value[1];
lcf->peers = ngx_inet_upstream_parse(cf, &inet_upstream);
if (lcf->peers == NULL) {
return NGX_CONF_ERROR;
}
}
clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
clcf->handler = ngx_http_fastcgi_handler;
#if (NGX_PCRE)
lcf->location = clcf->regex ? &ngx_http_fastcgi_uri : &clcf->name;
#else
lcf->location = &clcf->name;
#endif
if (clcf->name.data[clcf->name.len - 1] == '/') {
clcf->auto_redirect = 1;
}
return NGX_CONF_OK;
}
static char *
ngx_http_fastcgi_set_var(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_fastcgi_loc_conf_t *lcf = conf;
ngx_uint_t i, *index;
ngx_str_t *value;
ngx_http_variable_t *var;
ngx_http_core_main_conf_t *cmcf;
if (lcf->vars == NULL) {
lcf->vars = ngx_array_create(cf->pool, 4,
sizeof(ngx_http_variable_t *));
if (lcf->vars == NULL) {
return NGX_CONF_ERROR;
}
}
cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
value = cf->args->elts;
var = cmcf->variables.elts;
for (i = 0; i < cmcf->variables.nelts; i++) {
if (ngx_strcasecmp(var[i].name.data, value[1].data) == 0) {
index = ngx_array_push(lcf->vars);
if (index == NULL) {
return NGX_CONF_ERROR;
}
*index = var[i].index;
return NGX_CONF_OK;
}
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"unknown variable name \"%V\"", &value[1]);
return NGX_CONF_ERROR;
}
static char *
ngx_http_fastcgi_lowat_check(ngx_conf_t *cf, void *post, void *data)
{
#if (NGX_FREEBSD)
ssize_t *np = data;
if (*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 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.path = NULL;
* conf->upstream.next_upstream = 0;
* conf->upstream.temp_path = NULL;
* conf->params = 0;
* conf->root.len = 0;
* conf->root.data = NULL;
* conf->index.len = 0;
* conf->index.data = NULL;
* conf->location = NULL;
*/
conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC;
conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC;
conf->upstream.send_lowat = NGX_CONF_UNSET_SIZE;
conf->upstream.header_buffer_size = NGX_CONF_UNSET_SIZE;
conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC;
conf->upstream.busy_buffers_size = NGX_CONF_UNSET_SIZE;
conf->upstream.max_temp_file_size = NGX_CONF_UNSET_SIZE;
conf->upstream.temp_file_write_size = NGX_CONF_UNSET_SIZE;
conf->upstream.redirect_errors = NGX_CONF_UNSET;
conf->upstream.x_powered_by = NGX_CONF_UNSET;
/* "fastcgi_cyclic_temp_file" is disabled */
conf->upstream.cyclic_temp_file = 0;
return conf;
}
static char *
ngx_http_fastcgi_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
{
ngx_http_fastcgi_loc_conf_t *prev = parent;
ngx_http_fastcgi_loc_conf_t *conf = child;
size_t size;
ngx_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_size_value(conf->upstream.send_lowat,
prev->upstream.send_lowat, 0);
ngx_conf_merge_msec_value(conf->upstream.read_timeout,
prev->upstream.read_timeout, 60000);
ngx_conf_merge_msec_value(conf->upstream.redirect_errors,
prev->upstream.redirect_errors, 0);
ngx_conf_merge_msec_value(conf->upstream.x_powered_by,
prev->upstream.x_powered_by, 1);
ngx_conf_merge_size_value(conf->upstream.header_buffer_size,
prev->upstream.header_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.header_buffer_size;
if (size < conf->upstream.bufs.size) {
size = conf->upstream.bufs.size;
}
ngx_conf_merge_size_value(conf->upstream.busy_buffers_size,
prev->upstream.busy_buffers_size,
NGX_CONF_UNSET_SIZE);
if (conf->upstream.busy_buffers_size == NGX_CONF_UNSET_SIZE) {
conf->upstream.busy_buffers_size = 2 * size;
} else 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_header_buffer_size\" and "
"one of the \"fastcgi_buffers\"");
return NGX_CONF_ERROR;
} else 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,
prev->upstream.temp_file_write_size,
NGX_CONF_UNSET_SIZE);
if (conf->upstream.temp_file_write_size == NGX_CONF_UNSET_SIZE) {
conf->upstream.temp_file_write_size = 2 * size;
} else 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_header_buffer_size\" and "
"one of the \"fastcgi_buffers\"");
return NGX_CONF_ERROR;
}
ngx_conf_merge_size_value(conf->upstream.max_temp_file_size,
prev->upstream.max_temp_file_size,
NGX_CONF_UNSET_SIZE);
if (conf->upstream.max_temp_file_size == NGX_CONF_UNSET_SIZE) {
conf->upstream.max_temp_file_size = 1024 * 1024 * 1024;
} else 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_header_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));
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_bitmask_value(conf->params, prev->params,
(NGX_CONF_BITMASK_SET
|NGX_HTTP_FASTCGI_REMOTE_ADDR
|NGX_HTTP_FASTCGI_REMOTE_USER
|NGX_HTTP_FASTCGI_SERVER_NAME
|NGX_HTTP_FASTCGI_SERVER_PORT
|NGX_HTTP_FASTCGI_SCRIPT_NAME
|NGX_HTTP_FASTCGI_AUTH_TYPE
|NGX_HTTP_FASTCGI_REQUEST_URI
|NGX_HTTP_FASTCGI_REDIRECT_STATUS));
ngx_conf_merge_str_value(conf->root, prev->root, "");
if (conf->root.len && conf->root.data[conf->root.len - 1] == '/') {
conf->root.len--;
}
ngx_conf_merge_str_value(conf->index, prev->index, "");
if (conf->vars == NULL) {
conf->vars = prev->vars;
}
return NGX_CONF_OK;
}