build: fix some `-Wsign-conversion`/`-Warith-conversion` warnings

- enable `-Wsign-conversion` warnings, but also setting them to not
raise errors.
- fix `-Warith-conversion` warni

build: fix some `-Wsign-conversion`/`-Warith-conversion` warnings

- enable `-Wsign-conversion` warnings, but also setting them to not
raise errors.
- fix `-Warith-conversion` warnings seen in CI.
These are triggered by `-Wsign-converion` and causing errors unless
explicitly silenced. It makes more sense to fix them, there just a few
of them.
- fix some `-Wsign-conversion` warnings.
- hide `-Wsign-conversion` warnings with a `#pragma`.
- add macro `CURL_WARN_SIGN_CONVERSION` to unhide them on a per-build
basis.
- update a CI job to unhide them with the above macro:
https://github.com/curl/curl/actions/workflows/linux.yml -> OpenSSL -O3

Closes #12492

show more ...

copyright: update all copyright lines and remove year ranges

- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- save

copyright: update all copyright lines and remove year ranges

- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- saves us from pointless churn
- git keeps history for us
- the year range is kept in COPYING

checksrc is updated to allow non-year using copyright statements

Closes #10205

show more ...

share: add sharing of HSTS cache among handles

Closes #10138

multi: use larger dns hash table for multi interface

Have curl_multi_init() use a much larger DNS hash table than used for
the easy interface to scale and perform better when used with _

multi: use larger dns hash table for multi interface

Have curl_multi_init() use a much larger DNS hash table than used for
the easy interface to scale and perform better when used with _many_
host names.

curl_share_init() sets an in-between size.

Inspired-by: Ivan Tsybulin
See #9340
Closes #9376

show more ...

copyright: make repository REUSE compliant

Add licensing and copyright information for all files in this repository. This
either happens in the file itself as a comment header or in the

copyright: make repository REUSE compliant

Add licensing and copyright information for all files in this repository. This
either happens in the file itself as a comment header or in the file
`.reuse/dep5`.

This commit also adds a Github workflow to check pull requests and adapts
copyright.pl to the changes.

Closes #8869

show more ...

hash: lazy-alloc the table in Curl_hash_add()

This makes Curl_hash_init() infallible which saves error paths.

Closes #8132

tidy-up: make conditional checks more consistent

... remove '== NULL' and '!= 0'

Closes #6912

urldata: make magic be the first struct field

By making the `magic` identifier the same size and at the same place
within the structs (easy, multi, share), libcurl will be able to more

urldata: make magic be the first struct field

By making the `magic` identifier the same size and at the same place
within the structs (easy, multi, share), libcurl will be able to more
reliably detect and safely error out if an application passes in the
wrong handle to APIs. Easier to detect and less likely to cause crashes
if done.

Such mixups can't be detected at compile-time due to them being
typedefed void pointers - unless `CURL_STRICTER` is defined.

Closes #6484

show more ...

curl.se: new home

Closes #6172

vtls: make it 'struct Curl_ssl_session'

Use uppercase C for internal symbols.

Closes #5906

share: don't set the share flag it something fails

When asking for a specific feature to be shared in the share object,
that bit was previously set unconditionally even if the shared fea

share: don't set the share flag it something fails

When asking for a specific feature to be shared in the share object,
that bit was previously set unconditionally even if the shared feature
failed or otherwise wouldn't work.

Closes #5554

show more ...

psl: use latest psl and refresh it periodically

The latest psl is cached in the multi or share handle. It is refreshed
before use after 72 hours.
New share lock CURL_LOCK_DATA_PSL co

psl: use latest psl and refresh it periodically

The latest psl is cached in the multi or share handle. It is refreshed
before use after 72 hours.
New share lock CURL_LOCK_DATA_PSL controls the psl cache sharing.
If the latest psl is not available, the builtin psl is used.

Reported-by: Yaakov Selkowitz
Fixes #2553
Closes #2601

show more ...

curl_share_setopt: va_end was not called if conncache errors

CID 984459, detected by Coverity

share: add support for sharing the connection cache

typedefs: use the full structs in internal code...

... and save the typedef'ed names for headers and external APIs.

internals: rename the SessionHandle struct to Curl_easy

code: style updates

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

share_init: fix OOM crash

A failed calloc() would lead to NULL pointer use.

Coverity CID 1299427.

hostip: fix unintended destruction of hash table

.. and added unit1602 for hash.c

hostcache: made all host caches use structs, not pointers

This avoids unnecessary dynamic allocs and as this also removed the last
users of *hash_alloc() and *hash_destroy(), those two f

hostcache: made all host caches use structs, not pointers

This avoids unnecessary dynamic allocs and as this also removed the last
users of *hash_alloc() and *hash_destroy(), those two functions are now
removed.

show more ...

Bug #149: Deletion of unnecessary checks before a few calls of cURL functions

The following functions return immediately if a null pointer was passed.
* Curl_cookie_cleanup
* curl_fo

Bug #149: Deletion of unnecessary checks before a few calls of cURL functions

The following functions return immediately if a null pointer was passed.
* Curl_cookie_cleanup
* curl_formfree

It is therefore not needed that a function caller repeats a corresponding check.

This issue was fixed by using the software Coccinelle 1.0.0-rc24.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>

show more ...

vtls: renamed sslgen.[ch] to vtls.[ch]

vtls: created subdir, moved sslgen.[ch] there, updated all include lines

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.

show more ...