Before this patch `-nghttp3`/`-ngtcp2` had an effect only when `-ssl`
was also enabled. `-ssl` meaning OpenSSL (and its forks). After
8a13be227e nghttp3/ngtcp2 can also be
used together with wolfSSL. This patch adds the ability to enable
`-nghttp3`/`-ngtcp2` independently from `-ssl` (OpenSSL), allowing to
use it with wolfSSL or other, future TLS backends.
Before this patch, it was fine to enable `-nghttp3`/`-ngtcp2`
unconditionally. After this patch, this is no longer the case, and now
it's the user's responsibility to enable `-nghttp3`/`-ngtcp2` only
together with a compatible TLS backend.
When using a TLS backend other than OpenSSL, the TLS-specific ngtcp2
library must be configured manually, e.g.:
`export CURL_LDFLAG_EXTRAS=-lngtcp2_crypto_wolfssl`
(or via `NGTCP2_LIBS`)
Closes#9314
They allow to override the hardcoded values for the `windres` and `strip`
tools, complementing the existing set of `CURL_{CC,AR,RANLIB}` variables.
`CURL_RC` comes handy when using LLVM tools with `CROSSPREFIX=llvm-` and
`CURL_CC=clang` set on current latest debian:unstable or earlier, where
`llvm-windres` is missing, and a `CURL_RC=<triplet>-windres` fixes it.
Hopefully this will be fixed in the llvm package. FWIW `llvm-windres`
does exist in Homebrew llvm, MSYS2 llvm and llvm-mingw.
Reviewed-by: Daniel Stenberg
Closes#9132
Makefile.m32's ngtcp2 has its two libs hardwired for OpenSSL.
Add `NGTCP2_LIBS` envvar to override them with a custom list,
making it possible to use BoringSSL, or any other backend.
Closes#9109
Starting now, CURLOPT_FTP_RESPONSE_TIMEOUT is the alias instead of the
other way around.
Since 7.20.0, CURLOPT_SERVER_RESPONSE_TIMEOUT has existed as an alias
but since the option is for more protocols than FTP the more "correct"
version of the option is the "server" one so now we switch.
Closes#9104
When building curl for target platform other than x64 and x86, it is now
possible to pass `ARCH=custom`, that will omit all hardcoded logic for
setting up CFLAGS/LDFLAGS/RCFLAGS for these platforms, and let these be
customized via `CURL_CFLAG_EXTRAS`, `CURL_LDFLAG_EXTRAS`, and a newly
added one for the resource compiler: `CURL_RCFLAG_EXTRAS`.
This makes it possible to use `makefile.m32` to build for ARM64 for
example.
Reviewed-by: Daniel Stenberg
Closes#9092
- Use the Windows API to seed the fallback random generator.
This ensures to always have a random seed, even when libcurl is built
with a vtls backend lacking a random generator API, such as rustls
(experimental), GSKit and certain mbedTLS builds, or, when libcurl is
built without a TLS backend. We reuse the Windows-specific random
function from the Schannel backend.
- Implement support for `BCryptGenRandom()` [1] on Windows, as a
replacement for the deprecated `CryptGenRandom()` [2] function.
It is used as the secure random generator for Schannel, and also to
provide entropy for libcurl's fallback random generator. The new
function is supported on Vista and newer via its `bcrypt.dll`. It is
used automatically when building for supported versions. It also works
in UWP apps (the old function did not).
- Clear entropy buffer before calling the Windows random generator.
This avoids using arbitrary application memory as entropy (with
`CryptGenRandom()`) and makes sure to return in a predictable state
when an API call fails.
[1] https://docs.microsoft.com/windows/win32/api/bcrypt/nf-bcrypt-bcryptgenrandom
[2] https://docs.microsoft.com/windows/win32/api/wincrypt/nf-wincrypt-cryptgenrandomCloses#9027
Since this [1] commit in 2011, `_WIN32_WINNT` was set fixed to Windows
XP when the `-ipv6` option is selected. Maybe this was added to support
pre-XP Windows versions (?). These days libcurl builds fine for both XP
and post-XP versions with IPv6 support enabled. The relevance of pre-XP
version is also low by now. Other build methods also do not impose such
limitation for a similar configuration. So, drop this hard-wired
`_WIN32_WINNT` limit from `Makefile.m32`, thus building for the default
Windows version set by the compiler. This is Vista for recent MinGW
versions.
Old behaviour can be restored by setting this envvar:
export CURL_CFLAG_EXTRAS=-D_WIN32_WINNT=0x0501
[1] 98a61d8e2eCloses#9035
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
To simplify the license situation, as they were the only files in the
source tree using these specific BSD-3 clause licenses.
For an fopen style API, we recommend instead going
https://github.com/curl/fcurl
Ref: #8869Closes#8949
- `-D_AMD64_` has not been necessary for mingw-w64 builds for a long time now.
- `-fno-strict-aliasing` is mentioned for Intel C compiler in autotools, and
I used this with VxWorks in another project, but otherwise this isn't
necessary anymore as a default. If a target still needs it, it can be
added with `CURL_CFLAG_EXTRAS=-fno-strict-aliasing`
- bump up default optimization level to `-O3` (from `-O2`), and also rearrange
option order so the default can now be overridden via
`CURL_CFLAG_EXTRAS`.
- delete `-g` (generate debug info) from `CFLAGS` and `-s` from `LDFLAGS`
(strip debug info). They were working against each other. Now, if someone
needs debug info, it can be enabled via `CURL_CFLAG_EXTRAS=-g`
Closes#8904
Move checksrc.pl, firefox-db2pem.sh and mk-ca-bundle.pl since they don't
particularly belong in lib/
Also created an EXTRA_DIST= in scripts/Makefile.am instead of specifying
those files in the root Makefile.am
Closes#8625
7.61.0 is over three years old now, remove all #ifdefs for handling
ancient libcurl versions so that the example gets easier to read and
understand
Closes#8137
- accept `-schannel` as an alternative to `CFG` option `-winssl`
(latter still accepted, but deprecated)
- rename internal variable `WINSSL` to `SCHANNEL`
- make the `CFG` option evaluation shorter, without repeating the option
name
Reviewed-by: Marcel Raad
Reviewed-by: Daniel Stenberg
Closes#8053
Previously, -libssh2/-rtmp options assumed that OpenSSL is also enabled
(and then failed with an error when not finding expected OpenSSL headers),
but this isn't necessarly true, e.g. when building both libssh2 and curl
against Schannel. This patch makes sure to only enable the OpenSSL backend
with -libssh2/-rtmp, when there was no SSL option explicitly selected.
- Re-implement the logic as a single block of script.
- Also fix an indentation while there.
Assisted-by: Jay Satiro
Closes#7895
Commit f65d7889b added getreferrer, and commit ae8e11ed5 multi-legacy,
both of which missed adding .gitignore clauses for the built binaries.
Closes#7817
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Add curl_url_strerror() to convert CURLUcode into readable string and
facilitate easier troubleshooting in programs using URL API.
Extend CURLUcode with CURLU_LAST for iteration in unit tests.
Update man pages with a mention of new function.
Update example code and tests with new functionality where it fits.
Closes#7605
The signal handler registered for SIGINT is only handling SIGINT
so there isn't much need for inspecting the signo. While there,
rename the handler to be more specific.
g_should_exit should really be of sig_atomic_t type, but relying
on autoconf in the examples seems like a bad idea so keep that
for now.
Reviewed-by: Daniel Stenberg
Closes#7310
time_t representation is undefined and varies on bitsize and signedness,
and as of C11 could be even non integer.
instead of casting to unsigned long (which would truncate in systems
with a 32bit long after 2106) use difftime to get the elapsed time as a
double and print that (without decimals) instead.
alternatively a cast to curl_off_t and its corresponding print
formatting could have been used (at least in POSIX) but portability and
curl agnostic code was prioritized.
Closes#7490
The API is soon two years old and deserves being shown as the primary
way to drive multi code as it makes it much easier to write code.
multi-poll: removed
multi-legacy: add to show how we did multi API use before
curl_multi_wait/poll.
Closes#7352
The same callback code is used in:
imap-append.c
smtp-authzid.c
smtp-mail.c
smtp-multi.c
smtp-ssl.c
smtp-tls.c
It should not assume that it can copy full lines into the buffer as it
will encourage sloppy coding practices. Instead use byte-wise logic and
check/acknowledge the buffer size appropriately.
Reported-by: Harry Sintonen
Fixes#7330Closes#7331
Warning: this will make existing curl command lines that use metalink to
stop working.
Reasons for removal:
1. We've found several security problems and issues involving the
metalink support in curl. The issues are not detailed here. When
working on those, it become apparent to the team that several of the
problems are due to the system design, metalink library API and what
the metalink RFC says. They are very hard to fix on the curl side
only.
2. The metalink usage with curl was only very briefly documented and was
not following the "normal" curl usage pattern in several ways, making
it surprising and non-intuitive which could lead to further security
issues.
3. The metalink library was last updated 6 years ago and wasn't so
active the years before that either. An unmaintained library means
there's a security problem waiting to happen. This is probably reason
enough.
4. Metalink requires an XML parsing library, which is complex code (even
the smaller alternatives) and to this day often gets security
updates.
5. Metalink is not a widely used curl feature. In the 2020 curl user
survey, only 1.4% of the responders said that they'd are using it. In
2021 that number was 1.2%. Searching the web also show very few
traces of it being used, even with other tools.
6. The torrent format and associated technology clearly won for
downloading large files from multiple sources in parallel.
Cloes #7176
