Previously any connect-only connections in a multi handle would be kept
alive until the multi handle was closed. Since these connections cannot
be re-used, they can be marked for closure when the associated easy
handle is removed from the multi handle.
Closes#5749
They're not thread-safe so they should not be used in libcurl code.
Explictly enabled when deemed necessary and in examples and tests
Reviewed-by: Nicolas Sterchele
Closes#5732
Previously a file that isn't user-readable but is user-writable would
not be properly avoided and would get overwritten.
Reported-by: BrumBrum on hackerone
Assisted-by: Jay Satiro
Bug: https://hackerone.com/reports/926638Closes#5731
Since 09b9fc900 (multi: remove 'Curl_one_easy' struct, phase 1,
2013-08-02), the easy handle list is not circular but ends with
->next pointing to NULL.
Reported-by: Masaya Suzuki <masayasuzuki@google.com>
Closes#5737
Unsetting CURLOPT_NOBODY with 0L when doing HTTP has no documented
action but before 7.71.0 that used to switch back to GET and with this
change (assuming the method is still set to HEAD) this behavior is
brought back.
Reported-by: causal-agent on github
Fixes#5725Closes#5728
Stack overflows can occur with precisions for integers and floats.
Proof of concepts:
- curl_mprintf("%d, %.*1$d", 500, 1);
- curl_mprintf("%d, %+0500.*1$f", 500, 1);
Ideally, compile with -fsanitize=address which makes this undefined
behavior a bit more defined for debug purposes.
The format strings are valid. The overflows occur due to invalid
arguments. If these arguments are variables with contents controlled
by an attacker, the function's stack can be corrupted.
Also see CVE-2016-9586 which partially fixed the float aspect.
Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
Closes https://github.com/curl/curl/pull/5722
Verify that specified parameters are in range. If parameters are too
large, fail early on and avoid out of boundary accesses.
Also do not read behind boundaries of illegal format strings.
These are defensive measures since it is expected that format strings
are well-formed. Format strings should not be modifiable by user
input due to possible generic format string attacks.
Closes https://github.com/curl/curl/pull/5722
They are marked as deprecated for -mmacosx-version-min >= 10.15,
which might result in warnings-as-errors.
Closes https://github.com/curl/curl/pull/5695
It confuses code analyzers with its use of -1 for unsigned value. Also,
a check that's not normally used in strdup() code - and not necessary.
Closes#5697
Provide the HTTP method that was used on the latest request, which might
be relevant for users when there was one or more redirects involved.
Closes#5511
Use the unsigned type (size_t) in the arithmetic of pointers. In this
context, the signed type (ssize_t) is used unnecessarily.
Authored-by: ihsinme on github
Closes#5654
include zstd curl patch for Makefile.m32 from vszakats
and include Add CMake support for zstd from Peter Wu
Helped-by: Viktor Szakats
Helped-by: Peter Wu
Closes#5453
`http_proxy`/`proxy_ssl`/`tunnel_proxy` will not be available in `conn`
if `CURL_DISABLE_PROXY` is enabled. Repair the build with that
configuration.
Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Closes#5645
Well-behaving HTTP2 servers send two GOAWAY messages. The first
message is a warning that indicates that the server is going to
stop accepting streams. The second one actually closes the stream.
nghttp2 reports this state (and the other state of no more stream
identifiers) via the call nghttp2_session_check_request_allowed().
In this state the client should not create more streams on the
session (tcp connection), and in curl this means that the server
has requested that the connection is closed.
It would be also be possible to put the connclose() call into the
on_http2_frame_recv() function that triggers on the GOAWAY message.
This fixes a bug seen when the client sees the following sequence of
frames:
// advisory GOAWAY
HTTP2 GOAWAY [stream-id = 0, promised-stream-id = -1]
... some additional frames
// final GOAWAY
HTTP2 GOAWAY [stream-id = 0, promised-stream-id = N ]
Before this change, curl will attempt to reuse the connection even
after the last stream, will encounter this error:
* Found bundle for host localhost: 0x5595f0a694e0 [can multiplex]
* Re-using existing connection! (#0) with host localhost
* Connected to localhost (::1) port 10443 (#0)
* Using Stream ID: 9 (easy handle 0x5595f0a72e30)
> GET /index.html?5 HTTP/2
> Host: localhost:10443
> user-agent: curl/7.68.0
> accept: */*
>
* stopped the pause stream!
* Connection #0 to host localhost left intact
curl: (16) Error in the HTTP2 framing layer
This error may posion the connection cache, causing future requests
which resolve to the same curl connection to go through the same error
path.
Closes#5643
Confusingly, nghttp2 has two different error code enums:
- nghttp2_error, to be used with nghttp2_strerror
- nghttp2_error_code, to be used with nghttp2_http2_strerror
Closes#5641
Since commit f3d501dc67, if proxy support is disabled, MSVC warns:
url.c : warning C4701: potentially uninitialized local variable
'hostaddr' used
url.c : error C4703: potentially uninitialized local pointer variable
'hostaddr' used
That could actually only happen if both `conn->bits.proxy` and
`CURL_DISABLE_PROXY` were enabled.
Initialize it to NULL to silence the warning.
Closes https://github.com/curl/curl/pull/5638
Updated terminology in docs, comments and phrases to refer to C strings
as "null-terminated". Done to unify with how most other C oriented docs
refer of them and what users in general seem to prefer (based on a
single highly unscientific poll on twitter).
Reported-by: coinhubs on github
Fixes#5598Closes#5608
Don't reference fields that do not exist. Fixes build failure:
vtls/mbedtls.c: In function 'mbed_connect_step1':
vtls/mbedtls.c:249:54: error: 'struct connectdata' has no member named 'http_proxy'
Closes#5615
...previously CURLINFO_EFFECTIVE_URL would report the URL of the
original "mother transfer", not the actually pushed resource.
Reported-by: Jonathan Cardoso Machado
Fixes#5589Closes#5591
