Commit Graph

46 Commits

Author SHA1 Message Date
Glenn Strauss a04d69eaaa [mod_uploadprogress] use splay_tree for req list
(avoids persistent memory allocation for list struct)
(reduce possibility of long-term memory fragmentation due to
2021-09-08 15:06:06 -04:00
Glenn Strauss 9a2404cec6 [core] quiet compiler warnings
cast away signedness warning in request_check_hostname()
mod_gnutls https_add_ssl_client_entries crts allocated if crt_size != 0
  (which is already checked earlier in routine)

report from FaceBook Infer static analysis tool (
- quiet dead store warnings
- check return != NULL from allocation funcs
2021-09-04 08:08:26 -04:00
Glenn Strauss af3df29ae8 [multiple] reduce redundant NULL buffer checks
This commit is a large set of code changes and results in removal of
hundreds, perhaps thousands, of CPU instructions, a portion of which
are on hot code paths.

Most (buffer *) used by lighttpd are not NULL, especially since buffers
were inlined into numerous larger structs such as request_st and chunk.

In the small number of instances where that is not the case, a NULL
check is often performed earlier in a function where that buffer is
later used with a buffer_* func.  In the handful of cases that remained,
a NULL check was added, e.g. with r->http_host and r->conf.server_tag.

- check for empty strings at config time and set value to NULL if blank
  string will be ignored at runtime; at runtime, simple pointer check
  for NULL can be used to check for a value that has been set and is not
  blank ("")
- use buffer_is_blank() instead of buffer_string_is_empty(),
  and use buffer_is_unset() instead of buffer_is_empty(),
  where buffer is known not to be NULL so that NULL check can be skipped
- use buffer_clen() instead of buffer_string_length() when buffer is
  known not to be NULL (to avoid NULL check at runtime)
- use buffer_truncate() instead of buffer_string_set_length() to
  truncate string, and use buffer_extend() to extend

Examples where buffer known not to be NULL:
  - cpv->v.b from config_plugin_values_init is not NULL if T_CONFIG_BOOL
    (though we might set it to NULL if buffer_is_blank(cpv->v.b))
  - address of buffer is arg (&foo)
    (compiler optimizer detects this in most, but not all, cases)
  - buffer is checked for NULL earlier in func
  - buffer is accessed in same scope without a NULL check (e.g. b->ptr)

internal behavior change:
  callers must not pass a NULL buffer to some funcs.
  - buffer_init_buffer() requires non-null args
  - buffer_copy_buffer() requires non-null args
  - buffer_append_string_buffer() requires non-null args
  - buffer_string_space() requires non-null arg
2021-08-27 02:16:53 -04:00
Glenn Strauss ea38287a4c [multiple] do not clear physical.path if finished
do not reset r->physical.path (unneeded) if returning HANDLER_FINISHED

error handler will reset r->physical.path, if necessary
2021-03-26 07:33:42 -04:00
Glenn Strauss 19bc88850e [multiple] add attrs from gcc -Wsuggest-attribute= 2021-03-26 07:33:41 -04:00
Glenn Strauss 81029b8b51 [multiple] inline chunkqueue where always alloc'd
inline struct chunkqueue where always allocated in other structs

(memory locality)
2020-10-11 12:19:27 -04:00
Glenn Strauss 367f30a645 [multiple] extend enum http_header_e list 2020-10-11 12:19:26 -04:00
Glenn Strauss 33c8cf41db [multiple] rename connection_reset hook to request
rename connection_reset to handle_request_reset
2020-08-02 07:47:41 -04:00
Glenn Strauss c752d4696e [multiple] correct misspellings in comments
  "Script for fixing spelling errors with codespell"
2020-07-08 19:54:30 -04:00
Glenn Strauss 7c7f8c467c [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
2020-07-08 19:54:29 -04:00
Glenn Strauss cc2134c88b [multiple] copy small struct instead of memcpy()
when patching config
2020-07-08 19:54:29 -04:00
Glenn Strauss 31d9495330 [core] store subrequest_handler instead of mode
store pointer to module in handler_module instead of con->mode id
2020-07-08 19:54:29 -04:00
Glenn Strauss 1474be7859 [core] move addtl request-specific struct members 2020-07-08 19:54:29 -04:00
Glenn Strauss af5df35275 [core] rename content_length to reqbody_length
rename content_length to reqbody_length in request,
to more easily differentiate request body length
from response content_length
2020-07-08 19:54:29 -04:00
Glenn Strauss 50bdb55de8 [multiple] connection hooks no longer get (srv *)
(explicit (server *) not passed; available in con->srv)
2020-07-08 19:54:28 -04:00
Glenn Strauss 010c28949c [multiple] prefer (connection *) to (srv *)
convert all log_error_write() to log_error() and pass (log_error_st *)

use con->errh in preference to srv->errh (even though currently same)

avoid passing (server *) when previously used only for logging (errh)
2020-07-08 19:54:28 -04:00
Glenn Strauss b73949e03f [multiple] plugin.c handles common FREE_FUNC code
(simpler for modules; less boilerplate to cut-n-paste)
2020-07-08 18:08:51 -04:00
Glenn Strauss 3dacea4927 [mod_uploadprogress] use config_plugin_values_init() 2020-05-23 17:59:30 -04:00
Glenn Strauss e2de4e581e [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
2020-05-23 17:59:29 -04:00
Glenn Strauss 36f64b26a1 [core] simpler config_check_cond()
optimize for common case where condition has been evaluated for
the request and a cached result exists

(also: begin isolating data_config)
2020-05-23 17:59:29 -04:00
Glenn Strauss 6eb34ef5ab [core] add const to callers of http_header_*_get()
(The few places where value is modified in-place were not made const)
2020-02-24 11:15:32 -05:00
Glenn Strauss 47a758f959 [core] inline buffer key for *_patch_connection()
handle buffer key as part of DATA_UNSET in *_patch_connection()
(instead of key being (buffer *))
2020-02-24 11:15:32 -05:00
Mohammed Sadiq 6a988bb0d0 [multiple] cleaner calloc use in SETDEFAULTS_FUNC
github: closes #99

  "cleaner calloc use in SETDEFAULTS_FUNC"
2019-04-20 02:09:04 -04:00
Glenn Strauss d28bac32fe [multiple] reduce code dup in list resizing
reduce code duplication in list resizing
realloc() of NULL ptr has behavior similar to malloc()

Note that if initial size == 0, then code used to adjust size
must be += x to ensure the size is non-zero for reallocation.
(Multiplying 0 * x, e.g. power-2 resizing, will result in 0.)
2019-02-12 22:36:04 -05:00
Glenn Strauss f69bd9cdb8 [core] perf: simple, quick buffer_clear()
quickly clear buffer instead of buffer_string_set_length(b, 0) or
buffer_reset(b).  Avoids free() of large buffers about to be reused,
or buffers that are module-scoped, persistent, and reused.

(buffer_reset() should still be used with buffers in connection *con
 when the data in the buffers is supplied by external, untrusted source)
2018-11-23 00:37:38 -05:00
Glenn Strauss e7c840502a [core] perf: copy small strings; better buf reuse
copy small strings to write queue for better buffer reuse
(instead of swapping with larger buffers in write chunkqueue)
2018-10-27 14:00:08 -04:00
Glenn Strauss 3dd3cde902 [core] abstraction layer for HTTP header manip
convert existing calls to manip request/response headers
convert existing calls to manip environment array (often header-related)
2018-09-23 18:01:58 -04:00
Glenn Strauss cafb091cd4 [core] remove unused includes of stat_cache.h 2017-07-15 22:42:15 -04:00
Glenn Strauss e622aa4114 [mod_uploadprogress] handle query str progress ID (fixes #2808)
  "mod_uploadprogress fails when using parameters"
2017-05-07 14:34:32 -04:00
Glenn Strauss 1adf1df285 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
2017-01-14 01:06:16 -05:00
Glenn Strauss ab935a2b96 [mod_uploadprogress] add to default build
(module is distributed in Gentoo)
(add to default build to reduce distributor package maintenance)
2016-09-12 02:53:11 -04:00
Glenn Strauss 3d98e0b61a [mod_uploadprogress] fix mem leak (#1858)
fix memory leak
reduce code redundancy
convert code to use newer buffer.h APIs
proper cleanup if upload cancelled or client disconnected
change "starting" message to "not in progress" if upload not in progress
2016-07-07 14:16:46 -04:00
Glenn Strauss 8abd06a7ff consistent inclusion of config.h at top of files (fixes #2073)
From: Glenn Strauss <>

git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2016-03-19 15:14:35 +00:00
Stefan Bühler c512345fa2 [config] check config option scope; warn if server option is given in conditional
From: Stefan Bühler <>

git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2015-11-07 12:51:11 +00:00
Stefan Bühler 33cebeb0f7 fix segfaults in many plugins if they failed configuration
From: Stefan Bühler <>

git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2015-05-14 09:38:33 +00:00
Stefan Bühler 1be163b44a Remove chunkqueue_get_{append,prepend}* API
Although those were "easy" to use, they violated the abstraction:
  content of the chunkqueue should only be modified via the API.
  Replace with chunkqueue_get_memory() and chunkqueue_use_memory() for
  functions that read data from network (reusing large buffers),
  chunkqueue_steal_with_tempfiles() to store request bodies on disk
  Modules that were generating content and need a buffer maintain the
  buffer manually (have to be careful to free the buffer on errors, as
  it isn't part of the chunkqueue yet).

From: Stefan Bühler <>

git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2015-02-08 19:10:36 +00:00
Stefan Bühler 6afad87d2e fix buffer, chunk and http_chunk API
* remove unused structs and functions
    (buffer_array, read_buffer)
  * change return type from int to void for many functions,
    as the return value (indicating error/success) was never checked,
    and the function would only fail on programming errors and not on
    invalid input; changed functions to use force_assert instead of
    returning an error.
  * all "len" parameters now are the real size of the memory to be read.
    the length of strings is given always without the terminating 0.
  * the "buffer" struct still counts the terminating 0 in ->used,
    provide buffer_string_length() to get the length of a string in a
    unset config "strings" have used == 0, which is used in some places
    to distinguish unset values from "" (empty string) values.
  * most buffer usages should now use it as string container.
  * optimise some buffer copying by "moving" data to other buffers
  * use (u)intmax_t for generic int-to-string functions
  * remove unused enum values: UNUSED_CHUNK, ENCODING_UNSET
  * converted BUFFER_APPEND_SLASH to inline function (no macro feature
  * refactor: create chunkqueue_steal: moving (partial) chunks into another
  * http_chunk: added separate function to terminate chunked body instead of
    magic handling in http_chunk_append_mem().
    http_chunk_append_* now handle empty chunks, and never terminate the
    chunked body.

From: Stefan Bühler <>

git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2015-02-08 12:37:10 +00:00
Stefan Bühler 6f208cfde1 fix/silence bugs reported by ccc-analyzer (clang)
These should all be non critical:
 * memory leaks on startup in error cases (which lead to
   immediate shutdowns anyway)
 * http_auth/ldap: passing uninitialized "ret" to ldap_err2string
 * sizeof(T) not matching the target pointer in malloc/calloc calls;
   those cases were either:
   * T being the wrong pointer type - shouldn't matter as long as all
     pointers have same size
   * T being larger than the type needed
 * mod_accesslog: direct use after free in cleanup (server shutdown);
   could crash before "clean" shutdown
 * some false positives (mod_compress, mod_expire)
 * assert(srv->config_context->used > 0); - this is always the case,
   as there is always a global config block

From: Stefan Bühler <>

git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2013-11-13 11:43:26 +00:00
Stefan Bühler 22e8b456a9 Fix header inclusion order, always include "config.h" before any system header
git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2009-10-11 14:31:42 +00:00
Stefan Bühler 63f785a2f8 Added some extra warning options in cmake and fix the resulting warnings (unused/static functions)
git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2009-03-07 21:05:37 +00:00
Stefan Bühler ad12e4c5b2 Insert many con->mode checks; they should prevent two modules to handle the same request if they shouldn't (#631)
git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2008-08-01 16:13:34 +00:00
Stefan Bühler 52861d77df Replace buffer_{append,copy}_string with the _len variant where possible (#1732, thx crypt)

git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2008-07-30 19:38:32 +00:00
Marcus Rückert 8cd1471cb3 - white space cleanup part 2 this time 1.4 ;)
i hope it helps with merging stuff back to 1.5

git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2006-10-04 13:26:23 +00:00
Jan Kneschke 08809b7968 removed debug code
git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2005-09-26 09:16:07 +00:00
Jan Kneschke 5bd52eea71 if we would have streaming mod_uploadprogress would work
git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2005-09-26 08:55:07 +00:00
Jan Kneschke 2865e7d1c9 copied mod-uploadprogress as we get to the point where it will work again
git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9
2005-09-25 17:11:52 +00:00