content_encoding: change return code on a failure

Failure to decompress is now a write error instead of the weird
"function not found".

checksrc: stricter no-space-before-paren enforcement

In order to make the code style more uniform everywhere

realloc: use Curl_saferealloc to avoid common mistakes

Discussed: https://curl.haxx.se/mail/lib-2016-11/0087.html

internals: rename the SessionHandle struct to Curl_easy

URLs: change all http:// URLs to https://

build: fix circular header inclusion with other packages

This commit renames lib/setup.h to lib/curl_setup.h and
renames lib/setup_once.h to lib/curl_setup_once.h.

Removes the n

build: fix circular header inclusion with other packages

This commit renames lib/setup.h to lib/curl_setup.h and
renames lib/setup_once.h to lib/curl_setup_once.h.

Removes the need and usage of a header inclusion guard foreign
to libcurl. [1]

Removes the need and presence of an alarming notice we carried
in old setup_once.h [2]

----------------------------------------

1 - lib/setup_once.h used __SETUP_ONCE_H macro as header inclusion guard
up to commit ec691ca3 which changed this to HEADER_CURL_SETUP_ONCE_H,
this single inclusion guard is enough to ensure that inclusion of
lib/setup_once.h done from lib/setup.h is only done once.

Additionally lib/setup.h has always used __SETUP_ONCE_H macro to
protect inclusion of setup_once.h even after commit ec691ca3, this
was to avoid a circular header inclusion triggered when building a
c-ares enabled version with c-ares sources available which also has
a setup_once.h header. Commit ec691ca3 exposes the real nature of
__SETUP_ONCE_H usage in lib/setup.h, it is a header inclusion guard
foreign to libcurl belonging to c-ares's setup_once.h

The renaming this commit does, fixes the circular header inclusion,
and as such removes the need and usage of a header inclusion guard
foreign to libcurl. Macro __SETUP_ONCE_H no longer used in libcurl.

2 - Due to the circular interdependency of old lib/setup_once.h and the
c-ares setup_once.h header, old file lib/setup_once.h has carried
back from 2006 up to now days an alarming and prominent notice about
the need of keeping libcurl's and c-ares's setup_once.h in sync.

Given that this commit fixes the circular interdependency, the need
and presence of mentioned notice is removed.

All mentioned interdependencies come back from now old days when
the c-ares project lived inside a curl subdirectory. This commit
removes last traces of such fact.

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Revert changes relative to lib/*.[ch] recent renaming

This reverts renaming and usage of lib/*.h header files done
28-12-2012, reverting 2 commits:

f871de0... build: make use

Revert changes relative to lib/*.[ch] recent renaming

This reverts renaming and usage of lib/*.h header files done
28-12-2012, reverting 2 commits:

f871de0... build: make use of 76 lib/*.h renamed files
ffd8e12... build: rename 76 lib/*.h files

This also reverts removal of redundant include guard (redundant thanks
to changes in above commits) done 2-12-2013, reverting 1 commit:

c087374... curl_setup.h: remove redundant include guard

This also reverts renaming and usage of lib/*.c source files done
3-12-2013, reverting 3 commits:

13606bb... build: make use of 93 lib/*.c renamed files
5b6e792... build: rename 93 lib/*.c files
7d83dff... build: commit 13606bbfde follow-up 1

Start of related discussion thread:

http://curl.haxx.se/mail/lib-2013-01/0012.html

Asking for confirmation on pushing this revertion commit:

http://curl.haxx.se/mail/lib-2013-01/0048.html

Confirmation summary:

http://curl.haxx.se/mail/lib-2013-01/0079.html

NOTICE: The list of 2 files that have been modified by other
intermixed commits, while renamed, and also by at least one
of the 6 commits this one reverts follows below. These 2 files
will exhibit a hole in history unless git's '--follow' option
is used when viewing logs.

lib/curl_imap.h
lib/curl_smtp.h

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build: make use of 76 lib/*.h renamed files

76 private header files renamed to use our standard naming scheme.

This change affects 322 files in libcurl's source tree.

zlib: ensure user provided memory functions are used by zlib, when given

As a bonus, this lets our MemoryTracking subsystem track zlib operations.
And also fixes a shortcut some zlib 1.2

zlib: ensure user provided memory functions are used by zlib, when given

As a bonus, this lets our MemoryTracking subsystem track zlib operations.
And also fixes a shortcut some zlib 1.2.x versions took using malloc()
instead of calloc(), which would trigger memory debuggers warnings on
memory being used without having been initialized.

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zlib: enforce full initialization of our data space z_stream structs

stdio.h, stdlib.h, string.h, stdarg.h and ctype.h inclusion done in setup_once.h

source cleanup: unify look, style and indent levels

By the use of a the new lib/checksrc.pl script that checks that our
basic source style rules are followed.

inflate_stream: remove redundant check that is always true

follow redirect: ignore response-body on redirect even if compressed

Sebastian V reported bug #3000056 identifying a problem with
redirect following. It showed that when curl followed re

follow redirect: ignore response-body on redirect even if compressed

Sebastian V reported bug #3000056 identifying a problem with
redirect following. It showed that when curl followed redirects
it didn't properly ignore the response body of the 30X response
if that response was using compressed Content-Encoding!

(http://curl.haxx.se/bug/view.cgi?id=3000056)

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gzip: Value stored to 'data' is never read

check_gzip_header: Value stored to 'data' is never read

remove the CVSish $Id$ lines

- When downloading compressed content over HTTP and the app as asked libcurl
to automatically uncompress it with the CURLOPT_ENCODING option, libcurl
could wrongly provide the callback wi

- When downloading compressed content over HTTP and the app as asked libcurl
to automatically uncompress it with the CURLOPT_ENCODING option, libcurl
could wrongly provide the callback with more data than what the maximum
documented amount. An application could thus get tricked into badness if the
maximum limit was trusted to be enforced by libcurl itself (as it is
documented).

This is further detailed and explained in the libcurl security advisory
20100209 at

http://curl.haxx.se/docs/adv_20100209.html

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wrap long lines and do some indent policing

add cast to silient compiler warning with 64bit systems.

- Balint Szilakszi reported a memory leak when libcurl did gzip decompression
of streams that had some parts (legitimately) missing. We now provide and use
a proper cleanup function for t

- Balint Szilakszi reported a memory leak when libcurl did gzip decompression
of streams that had some parts (legitimately) missing. We now provide and use
a proper cleanup function for the content encoding submodule.
http://curl.haxx.se/mail/lib-2009-05/0092.html

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libcurl's memory.h renamed to curl_memory.h

- A second follow-up change by Andre Guibert de Bruet to fix a related memory
leak like that fixed on the 14th. When zlib returns failure, we need to
cleanup properly before returning err

- A second follow-up change by Andre Guibert de Bruet to fix a related memory
leak like that fixed on the 14th. When zlib returns failure, we need to
cleanup properly before returning error.

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nah, use the simpler year - year range syntax only, no matter what emacs'
copyright-update script thinks

- Andre Guibert de Bruet found and fixed a memory leak in the content encoding
code, which could happen on libz errors.