Updated lighttpd.

1 files changed, 348 insertions, 0 deletions

diff --git a/data/lighttpd/lighttpd-1.4.53/src/gw_backend.h b/data/lighttpd/lighttpd-1.4.53/src/gw_backend.h
new file mode 100644
index 000000000..5b00705a5
--- /dev/null
+++ b/data/lighttpd/lighttpd-1.4.53/src/gw_backend.h
@@ -0,0 +1,348 @@
+#ifndef INCLUDED_GW_BACKEND_H
+#define INCLUDED_GW_BACKEND_H
+
+#include "first.h"
+
+#include <sys/types.h>
+#include "sys-socket.h"
+
+#include "array.h"
+#include "buffer.h"
+
+typedef struct {
+    char **ptr;
+
+    size_t size;
+    size_t used;
+} char_array;
+
+typedef struct gw_proc {
+    size_t id; /* id will be between 1 and max_procs */
+    buffer *unixsocket; /* config.socket + "-" + id */
+    unsigned port;  /* config.port + pno */
+    socklen_t saddrlen;
+    struct sockaddr *saddr;
+
+    /* either tcp:<host>:<port> or unix:<socket> for debugging purposes */
+    buffer *connection_name;
+
+    pid_t pid;   /* PID of the spawned process (0 if not spawned locally) */
+
+
+    size_t load; /* number of requests waiting on this process */
+
+    time_t last_used; /* see idle_timeout */
+    size_t requests;  /* see max_requests */
+    struct gw_proc *prev, *next; /* see first */
+
+    time_t disabled_until; /* proc disabled until given time */
+
+    int is_local;
+
+    enum {
+        PROC_STATE_RUNNING,    /* alive */
+        PROC_STATE_OVERLOADED, /* listen-queue is full */
+        PROC_STATE_DIED_WAIT_FOR_PID, /* */
+        PROC_STATE_DIED,       /* marked as dead, should be restarted */
+        PROC_STATE_KILLED      /* killed (signal sent to proc) */
+    } state;
+} gw_proc;
+
+typedef struct {
+    /* the key that is used to reference this value */
+    buffer *id;
+
+    /* list of processes handling this extension
+     * sorted by lowest load
+     *
+     * whenever a job is done move it up in the list
+     * until it is sorted, move it down as soon as the
+     * job is started
+     */
+    gw_proc *first;
+    gw_proc *unused_procs;
+
+    /*
+     * spawn at least min_procs, at max_procs.
+     *
+     * as soon as the load of the first entry
+     * is max_load_per_proc we spawn a new one
+     * and add it to the first entry and give it
+     * the load
+     *
+     */
+
+    unsigned short min_procs;
+    unsigned short max_procs;
+    size_t num_procs;    /* how many procs are started */
+    size_t active_procs; /* how many procs in state PROC_STATE_RUNNING */
+
+    unsigned short max_load_per_proc;
+
+    /*
+     * kick the process from the list if it was not
+     * used for idle_timeout until min_procs is
+     * reached. this helps to get the processlist
+     * small again we had a small peak load.
+     *
+     */
+
+    unsigned short idle_timeout;
+
+    /*
+     * time after a disabled remote connection is tried to be re-enabled
+     *
+     *
+     */
+
+    unsigned short disable_time;
+
+    /*
+     * some gw processes get a little bit larger
+     * than wanted. max_requests_per_proc kills a
+     * process after a number of handled requests.
+     *
+     */
+    size_t max_requests_per_proc;
+
+
+    /* config */
+
+    /*
+     * host:port
+     *
+     * if host is one of the local IP adresses the
+     * whole connection is local
+     *
+     * if port is not 0, and host is not specified,
+     * "localhost" (INADDR_LOOPBACK) is assumed.
+     *
+     */
+    buffer *host;
+    unsigned short port;
+    unsigned short family; /* sa_family_t */
+
+    /*
+     * Unix Domain Socket
+     *
+     * instead of TCP/IP we can use Unix Domain Sockets
+     * - more secure (you have fileperms to play with)
+     * - more control (on locally)
+     * - more speed (no extra overhead)
+     */
+    buffer *unixsocket;
+
+    /* if socket is local we can start the gw process ourself
+     *
+     * bin-path is the path to the binary
+     *
+     * check min_procs and max_procs for the number
+     * of process to start up
+     */
+    buffer *bin_path;
+
+    /* bin-path is set bin-environment is taken to
+     * create the environement before starting the
+     * FastCGI process
+     *
+     */
+    array *bin_env;
+
+    array *bin_env_copy;
+
+    /*
+     * docroot-translation between URL->phys and the
+     * remote host
+     *
+     * reasons:
+     * - different dir-layout if remote
+     * - chroot if local
+     *
+     */
+    buffer *docroot;
+
+    /*
+     * check_local tells you if the phys file is stat()ed
+     * or not. FastCGI doesn't care if the service is
+     * remote. If the web-server side doesn't contain
+     * the FastCGI-files we should not stat() for them
+     * and say '404 not found'.
+     */
+    unsigned short check_local;
+
+    /*
+     * append PATH_INFO to SCRIPT_FILENAME
+     *
+     * php needs this if cgi.fix_pathinfo is provided
+     *
+     */
+
+    unsigned short break_scriptfilename_for_php;
+
+    /*
+     * workaround for program when prefix="/"
+     *
+     * rule to build PATH_INFO is hardcoded for when check_local is disabled
+     * enable this option to use the workaround
+     *
+     */
+
+    unsigned short fix_root_path_name;
+
+    /*
+     * If the backend includes X-Sendfile in the response
+     * we use the value as filename and ignore the content.
+     *
+     */
+    unsigned short xsendfile_allow;
+    array *xsendfile_docroot;
+
+    ssize_t load;
+
+    size_t max_id; /* corresponds most of the time to num_procs */
+
+    buffer *strip_request_uri;
+
+    unsigned short tcp_fin_propagate;
+    unsigned short kill_signal; /* we need a setting for this as libfcgi
+                                   applications prefer SIGUSR1 while the
+                                   rest of the world would use SIGTERM
+                                   *sigh* */
+
+    int listen_backlog;
+    int refcount;
+
+    char_array args;
+} gw_host;
+
+/*
+ * one extension can have multiple hosts assigned
+ * one host can spawn additional processes on the same
+ *   socket (if we control it)
+ *
+ * ext -> host -> procs
+ *    1:n     1:n
+ *
+ * if the gw process is remote that whole goes down
+ * to
+ *
+ * ext -> host -> procs
+ *    1:n     1:1
+ *
+ * in case of PHP and FCGI_CHILDREN we have again a procs
+ * but we don't control it directly.
+ *
+ */
+
+typedef struct {
+    buffer *key; /* like .php */
+
+    int note_is_sent;
+    int last_used_ndx;
+
+    gw_host **hosts;
+
+    size_t used;
+    size_t size;
+} gw_extension;
+
+typedef struct {
+    gw_extension **exts;
+
+    size_t used;
+    size_t size;
+} gw_exts;
+
+
+
+
+#include "base_decls.h"
+#include "chunk.h"
+#include "plugin.h"
+#include "response.h"
+
+typedef struct gw_plugin_config {
+    gw_exts *exts;
+    gw_exts *exts_auth;
+    gw_exts *exts_resp;
+
+    array *ext_mapping;
+
+    int balance;
+    int proto;
+    int debug;
+} gw_plugin_config;
+
+/* generic plugin data, shared between all connections */
+typedef struct gw_plugin_data {
+    PLUGIN_DATA;
+    gw_plugin_config **config_storage;
+
+    gw_plugin_config conf; /* used only as long as no gw_handler_ctx is setup */
+    pid_t srv_pid;
+} gw_plugin_data;
+
+/* connection specific data */
+typedef enum {
+    GW_STATE_INIT,
+    GW_STATE_CONNECT_DELAYED,
+    GW_STATE_PREPARE_WRITE,
+    GW_STATE_WRITE,
+    GW_STATE_READ
+} gw_connection_state_t;
+
+#define GW_RESPONDER  1
+#define GW_AUTHORIZER 2
+#define GW_FILTER     3  /*(not implemented)*/
+
+typedef struct gw_handler_ctx {
+    gw_proc *proc;
+    gw_host *host;
+    gw_extension *ext;
+    gw_extension *ext_auth; /* (future: might allow multiple authorizers)*/
+    unsigned short gw_mode; /* mode: GW_AUTHORIZER or GW_RESPONDER */
+
+    gw_connection_state_t state;
+    time_t   state_timestamp;
+
+    chunkqueue *rb; /* read queue */
+    chunkqueue *wb; /* write queue */
+    off_t     wb_reqlen;
+
+    buffer   *response;
+
+    int       fd;        /* fd to the gw process */
+    int       fde_ndx;   /* index into the fd-event buffer */
+
+    pid_t     pid;
+    int       reconnects; /* number of reconnect attempts */
+
+    int       request_id;
+    int       send_content_body;
+
+    http_response_opts opts;
+    gw_plugin_config conf;
+
+    connection *remote_conn;     /* dumb pointer */
+    gw_plugin_data *plugin_data; /* dumb pointer */
+    handler_t(*stdin_append)(server *srv, struct gw_handler_ctx *hctx);
+    handler_t(*create_env)(server *srv, struct gw_handler_ctx *hctx);
+    void(*backend_error)(struct gw_handler_ctx *hctx);
+    void(*handler_ctx_free)(void *hctx);
+} gw_handler_ctx;
+
+
+void * gw_init(void);
+void gw_plugin_config_free(gw_plugin_config *s);
+handler_t gw_free(server *srv, void *p_d);
+int gw_set_defaults_backend(server *srv, gw_plugin_data *p, data_unset *du, size_t i, int sh_exec);
+int gw_set_defaults_balance(server *srv, gw_plugin_config *s, data_unset *du);
+handler_t gw_check_extension(server *srv, connection *con, gw_plugin_data *p, int uri_path_handler, size_t hctx_sz);
+handler_t gw_connection_reset(server *srv, connection *con, void *p_d);
+handler_t gw_handle_subrequest(server *srv, connection *con, void *p_d);
+handler_t gw_handle_trigger(server *srv, void *p_d);
+handler_t gw_handle_waitpid_cb(server *srv, void *p_d, pid_t pid, int status);
+
+void gw_set_transparent(server *srv, gw_handler_ctx *hctx);
+
+#endif