[multiple] clang -Wstrict-prototypes for C2x

adjustments to compile warnings-free with recent clang changes that
warn about potential behavior change for non-prototypes, including
generic function p

[multiple] clang -Wstrict-prototypes for C2x

adjustments to compile warnings-free with recent clang changes that
warn about potential behavior change for non-prototypes, including
generic function pointers e.g. int(*)()

x-ref:
https://discourse.llvm.org/t/rfc-enabling-wstrict-prototypes-by-default-in-c/60521
https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2432.pdf
https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2841.htm

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[core] remove func decls duplicated in plugin.h

[core] isolate plugins_*() funcs to main server

(future: might rename plugin.c -> plugins.c since the functions
contained within are all plugins_*())

[core] merge uri_raw and uri_clean hooks

hooks are run consecutively in http_response_prepare()

merge uri_raw before uri_clean to preserve existing ordering

[multiple] rename connection_reset hook to request

rename connection_reset to handle_request_reset

[multiple] split con, request (very large change)

NB: r->tmp_buf == srv->tmp_buf (pointer is copied for quicker access)

NB: request read and write chunkqueues currently point to connection
chun

[multiple] split con, request (very large change)

NB: r->tmp_buf == srv->tmp_buf (pointer is copied for quicker access)

NB: request read and write chunkqueues currently point to connection
chunkqueues; per-request and per-connection chunkqueues are
not distinct from one another
con->read_queue == r->read_queue
con->write_queue == r->write_queue

NB: in the future, a separate connection config may be needed for
connection-level module hooks. Similarly, might need to have
per-request chunkqueues separate from per-connection chunkqueues.
Should probably also have a request_reset() which is distinct from
connection_reset().

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[core] store subrequest_handler instead of mode

store pointer to module in handler_module instead of con->mode id

[core] store (plugin *) in p->data

(self-referential)

[multiple] plugin_stats array

use global rather than passing around (server *) just for that

li_itostrn() and li_utostrn() return string length
(rather than requiring subsequent strlen() to find le

[multiple] plugin_stats array

use global rather than passing around (server *) just for that

li_itostrn() and li_utostrn() return string length
(rather than requiring subsequent strlen() to find length)

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[multiple] connection hooks no longer get (srv *)

(explicit (server *) not passed; available in con->srv)

[core] isolate use of data_config, configfile.h

[core] run all trigger and sighup handlers

(do not bail if a handler returns something other than HANDLER_GO_ON)

(preserve fn signature for simplicity and compat with plugin_fn_data)

[multiple] plugin.c handles common FREE_FUNC code

(simpler for modules; less boilerplate to cut-n-paste)

[core] config_plugin_values_init() new interface

new data structures and interface for processing config directives
(towards more efficient approach to config merging)

continue work to isolate data

[core] config_plugin_values_init() new interface

new data structures and interface for processing config directives
(towards more efficient approach to config merging)

continue work to isolate data_config

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[core] struct plugin_data_base

[core] const char *name in struct plugin

put void *data (always used) as first member of struct plugin

add int nconfig member to PLUGIN_DATA

calloc() inits p->data to NULL

[core] new worker_init hook to follow parent fork

[core] mark startup/shutdown funcs cold

[core] some header cleanup

provide standard types in first.h instead of base.h
provide lighttpd types in base_decls.h instead of settings.h
reduce headers exposed by headers for core data structures

[core] some header cleanup

provide standard types in first.h instead of base.h
provide lighttpd types in base_decls.h instead of settings.h
reduce headers exposed by headers for core data structures
do not expose <pcre.h> or <stdlib.h> in headers
move stat_cache_entry to stat_cache.h
reduce use of "server.h" and "base.h" in headers

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[core] merge redirect/rewrite pattern substitution

merge redirect/rewrite pattern substitution function (share code)

[core] SIGCHLD handle_waitpid hook for modules

centralize most waitpid() handling in core server, with hooks for
modules to be informed of pid and status when a process exits.

This enables faster d

[core] SIGCHLD handle_waitpid hook for modules

centralize most waitpid() handling in core server, with hooks for
modules to be informed of pid and status when a process exits.

This enables faster discovery (and restart) of exited processes,
and also allows for lighttpd to manage backend processes in the
parent (master) process when server.max-worker > 0.

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[core] allow earlier plugin init for SSL/TLS

If lighttpd is started privileged, then SSL/TLS modules need to be
initialized prior to chroot (optional) and prior to dropping privileges
in order to be

[core] allow earlier plugin init for SSL/TLS

If lighttpd is started privileged, then SSL/TLS modules need to be
initialized prior to chroot (optional) and prior to dropping privileges
in order to be able to read sensitive files such as private certificates

(thx m4t)

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[core] new plugin hooks to help isolate SSL

handle_request_env (called on demand by handlers to populate env)
handle_connection_accept
handle_connection_shut_wr (was handle_connection_close)

[core] new plugin hooks to help isolate SSL

handle_request_env (called on demand by handlers to populate env)
handle_connection_accept
handle_connection_shut_wr (was handle_connection_close)
handle_connection_close (now occurs at socket close())

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remove redundant calls to end-of-request hooks

The (misnamed) connection_reset hook is always called after a request,
whether request completes or is aborted, and whether keep-alive or not,
so no ne

remove redundant calls to end-of-request hooks

The (misnamed) connection_reset hook is always called after a request,
whether request completes or is aborted, and whether keep-alive or not,
so no needed to repeat the same function in the handle_connection_close
hook.

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backport mod_deflate to lighttpd 1.4 (fixes #1824, fixes #2753)

lots of fixes and improvements

limitations: see comments at top of mod_deflate.c

missing functionality: encode streaming response

backport mod_deflate to lighttpd 1.4 (fixes #1824, fixes #2753)

lots of fixes and improvements

limitations: see comments at top of mod_deflate.c

missing functionality: encode streaming response
(module currently requires response be collected before being sent)

potential functionality: addition of compressed file cache would
allow mod_deflate to fully supplant mod_compress in lighttpd 1.4.x

x-ref:
"Adding mod_deflate to 1.4.xx"
https://redmine.lighttpd.net/issues/1824
"mod_deflate backport compile error if ENABLE_MMAP not defined"
https://redmine.lighttpd.net/issues/2753

github: closes #67

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