ipfs: add options to disable

- CPPFLAGS: `-DCURL_DISABLE_IPFS`
- configure: `--disable-ipfs`
- cmake: `-DCURL_DISABLE_IPFS=ON`

Fixes #14824
Closes #14827

src: fix potential macro confusion in cmake unity builds

Sources used `lib/curlx.h` with both `ENABLE_CURLX_PRINTF` set and unset
before including it.

In a cmake "unity" batch w

src: fix potential macro confusion in cmake unity builds

Sources used `lib/curlx.h` with both `ENABLE_CURLX_PRINTF` set and unset
before including it.

In a cmake "unity" batch where the first included source had it unset,
the next sources did not get the macros requested with
`ENABLE_CURLX_PRINTF` because `lib/curl.x` had already been included
without them.

Fix it by by making the macros enabled permanently and globally for
internal sources, and dropping `ENABLE_CURLX_PRINTF`.

This came up while testing unity builds with smaller batches. The full,
default unity build where all `src` is bundled up in a single unit, was
not affected.

Fixes:
```
$ cmake -B build -DCMAKE_UNITY_BUILD=ON -DCMAKE_UNITY_BUILD_BATCH_SIZE=15
$ make -C build
...
curl/src/tool_getparam.c: In function ‘getparameter’:
curl/src/tool_getparam.c:2409:11: error: implicit declaration of function ‘msnprintf’; did you mean ‘vsnprintf’? [-Wimplicit-function-declaration]
2409 | msnprintf(buffer, sizeof(buffer), "%" CURL_FORMAT_CURL_OFF_T "-",
| ^~~~~~~~~
| vsnprintf
curl/src/tool_getparam.c:2409:11: warning: nested extern declaration of ‘msnprintf’ [-Wnested-externs]
[...]
```

Reported-by: Daniel Stenberg
Bug: https://github.com/curl/curl/pull/14626#issuecomment-2301663491

Closes #14632

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curl: support embedding a CA bundle

Add the ability to embed a CA bundle into the curl binary. It is used
when no other runtime or build-time option set one.

This helps curl-for

curl: support embedding a CA bundle

Add the ability to embed a CA bundle into the curl binary. It is used
when no other runtime or build-time option set one.

This helps curl-for-win macOS and Linux builds to run standalone, and
also helps Windows builds to avoid picking up the CA bundle from an
arbitrary (possibly world-writable) location (though this behaviour is
not currently disablable).

Usage:
- cmake: `-DCURL_CA_EMBED=/path/to/curl-ca-bundle.crt`
- autotools: `--with-ca-embed=/path/to/curl-ca-bundle.crt`
- Makefile.mk: `CURL_CA_EMBED=/path/to/curl-ca-bundle.crt`

Also add new command-line option `--dump-ca-embed` to dump the embedded
CA bundle to standard output.

Closes #14059

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code: language cleanup in comments

Based on the standards and guidelines we use for our documentation.

- expand contractions (they're => they are etc)
- host name = > hostname

code: language cleanup in comments

Based on the standards and guidelines we use for our documentation.

- expand contractions (they're => they are etc)
- host name = > hostname
- file name => filename
- user name = username
- man page => manpage
- run-time => runtime
- set-up => setup
- back-end => backend
- a HTTP => an HTTP
- Two spaces after a period => one space after period

Closes #14073

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curl: add support for the IPFS protocols:

- ipfs://<cid>
- ipns://<cid>

This allows you tu use ipfs in curl like:
curl ipfs://<cid>
and
curl ipns://<cid>

Fo

curl: add support for the IPFS protocols:

- ipfs://<cid>
- ipns://<cid>

This allows you tu use ipfs in curl like:
curl ipfs://<cid>
and
curl ipns://<cid>

For more information consult the readme at:
https://curl.se/docs/ipfs.html

Closes #8805

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curl: return error when asked to use an unsupported HTTP version

When one of the following options are used but the libcurl in use does
not support it:

--http2
--http2-prior

curl: return error when asked to use an unsupported HTTP version

When one of the following options are used but the libcurl in use does
not support it:

--http2
--http2-prior-knowledge
--proxy-http2

Closes #11440

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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

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tool: use feature names instead of bit mask, when possible

If the run-time libcurl is too old to support feature names, the name
array is created locally from the bit masks. This is the

tool: use feature names instead of bit mask, when possible

If the run-time libcurl is too old to support feature names, the name
array is created locally from the bit masks. This is the only sequence
left that uses feature bit masks.

Closes #9583

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tool: remove protocol count limitation

Replace bit mask protocol sets by null-terminated arrays of protocol
tokens. These are the addresses of the protocol names returned by
curl_ver

tool: remove protocol count limitation

Replace bit mask protocol sets by null-terminated arrays of protocol
tokens. These are the addresses of the protocol names returned by
curl_version_info().

Protocol names are sorted case-insensitively before output to satisfy CI
tests matches consistency.

The protocol list returned by curl_version_info() is augmented with all
RTMP protocol variants.

Test 1401 adjusted for new alpha ordered output.

Closes #9546

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misc: fix spelling in two source files

Closes #9529

tool_libinfo: silence "different 'const' qualifiers" in qsort()

MSVC 15.0.30729.1 warned about it

Follow-up to dd2a024323dcc

Closes #9522

cli tool: do not use disabled protocols

As they are now rejected by the library, take care of not passing
disabled protocol names to CURLOPT_PROTOCOLS_STR and
CURLOPT_REDIR_PROTOCOLS

cli tool: do not use disabled protocols

As they are now rejected by the library, take care of not passing
disabled protocol names to CURLOPT_PROTOCOLS_STR and
CURLOPT_REDIR_PROTOCOLS_STR.

Rather than using the CURLPROTO_* constants, dynamically assign protocol
numbers based on the order they are listed by curl_version_info().

New type proto_set_t implements prototype bit masks: it should therefore
be large enough to accomodate all library-enabled protocols. If not,
protocol numbers beyond the bit count of proto_set_t are recognized but
"inaccessible": when used, a warning is displayed and the value is
ignored. Should proto_set_t overflows, enabled protocols are reordered to
force those having a public CURLPROTO_* representation to be accessible.

Code has been added to subordinate RTMP?* protocols to the presence of
RTMP in the enabled protocol list, being returned by curl_version_info()
or not.

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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

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tool_operate: only set SSH related libcurl options for SSH URLs

For example, this avoids trying to find and set the known_hosts file (or
warn for its absence) if SFTP or SCP are not used

tool_operate: only set SSH related libcurl options for SSH URLs

For example, this avoids trying to find and set the known_hosts file (or
warn for its absence) if SFTP or SCP are not used.

Closes #8040

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curl.h: add CURLPROTO_GOPHERS as own protocol identifier

Follow-up to a1f06f32b860, to make sure it can be handled separately
from plain gopher.

Closes #6418

copyright: fix year ranges

Follow-up from 4d2f8006777

curl.se: new home

Closes #6172

copyrights: fix copyright year range

.. because checksrc's copyright year check stopped working.

Ref: https://github.com/curl/curl/pull/4547

Closes https://github.com/curl/

copyrights: fix copyright year range

.. because checksrc's copyright year check stopped working.

Ref: https://github.com/curl/curl/pull/4547

Closes https://github.com/curl/curl/pull/4549

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whitespace fixes

- replace tabs with spaces where possible
- remove line ending spaces
- remove double/triple newlines at EOF
- fix a non-UTF-8 character
- cleanup a few inde

whitespace fixes

- replace tabs with spaces where possible
- remove line ending spaces
- remove double/triple newlines at EOF
- fix a non-UTF-8 character
- cleanup a few indentations/line continuations
in manual examples

Closes https://github.com/curl/curl/pull/3037

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cppcheck: fix warnings

- Get rid of variable that was generating false positive warning
(unitialized)

- Fix issues in tests

- Reduce scope of several variables all over

cppcheck: fix warnings

- Get rid of variable that was generating false positive warning
(unitialized)

- Fix issues in tests

- Reduce scope of several variables all over

etc

Closes #2631

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strcase: make the tool use curl_str[n]equal instead

As they are after all part of the public API. Saves space and reduces
complexity. Remove the strcase defines from the curlx_ family.

strcase: make the tool use curl_str[n]equal instead

As they are after all part of the public API. Saves space and reduces
complexity. Remove the strcase defines from the curlx_ family.

Suggested-by: Dan Fandrich
Idea: https://curl.haxx.se/mail/lib-2016-10/0136.html

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strcasecompare: all case insensitive string compares ignore locale now

We had some confusions on when each function was used. We should not act
differently on different locales anyway.

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

curl tool: Enable support for the SMB protocol

This patch enables SMB/CIFS support in the curl command-line tool.

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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