Assumed to be a minor coding style improvement with no behavior change.
A modern compiler is expected to have the calculation optimized during
compilation. It may be deemed okay even if that's not the case, since
the added overhead is considered very low.
Closes#7032
Also added 'CURL_SMALLSENDS' to make Curl_write() send short packets,
which helped verifying this even more.
Add test 363 to verify.
Reported-by: ustcqidi on github
Fixes#6950Closes#7024
Previously this logic would cap the send to CURL_MAX_WRITE_SIZE bytes,
but for the situations where a larger upload buffer has been set, this
function can benefit from sending more bytes. With default size used,
this does the same as before.
Also changed the storage of the size to an 'unsigned int' as it is not
allowed to be set larger than 2M.
Also added cautions to the man pages about changing buffer sizes in
run-time.
Closes#7022
A reused transfer handle could otherwise reuse the previous leftover
buffer and havoc would ensue.
Reported-by: sergio-nsk on github
Fixes#7018Closes#7021
Previously, settting only the max allowed TLS version, leaving the
minimum one at default, didn't actually set it and left it to default
(TLS 1.3) too!
As a bonus, this change also removes the dead code handling of SSLv3
since that version can't be set anymore (since eff614fb02).
Reported-by: Daniel Carpenter
Fixes#6998Closes#7000
Since openldap itself uses that prefix and with OpenĹDAP 2.5.4 (at
least) there's a symbol collision because of that.
The private functions now use the 'oldap_' prefix where it previously
used 'ldap_'.
Reported-by: 3eka on github
Fixes#7004Closes#7005
... as they're checked for in the configure script and are used by
source code.
Removed checks for perror, setvbuf and strlcat since those defines are
not checked for in source code.
Bonus: removed HAVE_STRLCPY from a few config-*.h files since that
symbol is not used in source code.
Closes#6997
... to avoid memory leaks!
libssh2 is tricky as we have to deal with the non-blockiness even in
close and shutdown cases. In the cases when we shutdown after a timeout
already expired, it is crucial that curl doen't let the timeout abort
the shutdown process as that then leaks memory!
Reported-by: Benjamin Riefenstahl
Fixes#6990
When a TLS server requests a client certificate during handshake and
none can be provided, libcurl now returns this new error code
CURLE_SSL_CLIENTCERT
Only supported by Secure Transport and OpenSSL for TLS 1.3 so far.
Closes#6721
... detected by Coverity:
Error: RESOURCE_LEAK (CWE-772):
lib/http2.c:532: alloc_fn: Storage is returned from allocation function "duphandle".
lib/http2.c:532: var_assign: Assigning: "newhandle" = storage returned from "duphandle(data)".
lib/http2.c:552: noescape: Resource "newhandle" is not freed or pointed-to in "set_transfer_url".
lib/http2.c:555: leaked_storage: Variable "newhandle" going out of scope leaks the storage it points to.
Closes#6986
... detected by Coverity:
Error: RESOURCE_LEAK (CWE-772):
lib/http2.c:480: alloc_fn: Storage is returned from allocation function "curl_url". [Note: The source code implementation of the function has been overridden by a builtin model.]
lib/http2.c:480: var_assign: Assigning: "u" = storage returned from "curl_url()".
lib/http2.c:486: noescape: Resource "u" is not freed or pointed-to in "curl_url_set". [Note: The source code implementation of the function has been overridden by a builtin model.]
lib/http2.c:488: leaked_storage: Variable "u" going out of scope leaks the storage it points to.
Error: RESOURCE_LEAK (CWE-772):
lib/http2.c:480: alloc_fn: Storage is returned from allocation function "curl_url". [Note: The source code implementation of the function has been overridden by a builtin model.]
lib/http2.c:480: var_assign: Assigning: "u" = storage returned from "curl_url()".
lib/http2.c:493: noescape: Resource "u" is not freed or pointed-to in "curl_url_set". [Note: The source code implementation of the function has been overridden by a builtin model.]
lib/http2.c:495: leaked_storage: Variable "u" going out of scope leaks the storage it points to.
Error: RESOURCE_LEAK (CWE-772):
lib/http2.c:480: alloc_fn: Storage is returned from allocation function "curl_url". [Note: The source code implementation of the function has been overridden by a builtin model.]
lib/http2.c:480: var_assign: Assigning: "u" = storage returned from "curl_url()".
lib/http2.c:500: noescape: Resource "u" is not freed or pointed-to in "curl_url_set". [Note: The source code implementation of the function has been overridden by a builtin model.]
lib/http2.c:502: leaked_storage: Variable "u" going out of scope leaks the storage it points to.
Error: RESOURCE_LEAK (CWE-772):
lib/http2.c:480: alloc_fn: Storage is returned from allocation function "curl_url". [Note: The source code implementation of the function has been overridden by a builtin model.]
lib/http2.c:480: var_assign: Assigning: "u" = storage returned from "curl_url()".
lib/http2.c:505: noescape: Resource "u" is not freed or pointed-to in "curl_url_get". [Note: The source code implementation of the function has been overridden by a builtin model.]
lib/http2.c:507: leaked_storage: Variable "u" going out of scope leaks the storage it points to.
Closes#6986
Removed localfd and remotefd from ssl_backend_data (ued only with proxy
connection). Function pipe_ssloverssl return always 0, when proxy is not
used.
Closes#6981
This abstracts across the two HTTP/2 backends: nghttp2 and Hyper.
Add our own define for the "h2" ALPN protocol, so TLS backends can use
it without depending on a specific HTTP backend.
Closes#6959
Previously if a caller set CURLOPT_WRITEFUNCTION but did not set a
CURLOPT_HEADERDATA buffer, Hyper would still attempt to write headers to
the data->set.writeheader header buffer, even though it is null. This
led to NPE segfaults attempting to use libcurl+Hyper with Git, for
example.
Instead, process the client write for the status line using the same
logic we use to process the client write for the later HTTP headers,
which contains the appropriate guard logic. As a side benefit,
data->set.writeheader is now only read in one file instead of two.
Fixes#6619Fixesabetterinternet/crustls#49Fixeshyperium/hyper#2438Closes#6971
- Disable auto credentials by default. This is a breaking change
for clients that are using it, wittingly or not.
- New libcurl ssl option value CURLSSLOPT_AUTO_CLIENT_CERT tells libcurl
to automatically locate and use a client certificate for
authentication, when requested by the server.
- New curl tool options --ssl-auto-client-cert and
--proxy-ssl-auto-client-cert map to CURLSSLOPT_AUTO_CLIENT_CERT.
This option is only supported for Schannel (the native Windows SSL
library). Prior to this change Schannel would, with no notification to
the client, attempt to locate a client certificate and send it to the
server, when requested by the server. Since the server can request any
certificate that supports client authentication in the OS certificate
store it could be a privacy violation and unexpected.
Fixes https://github.com/curl/curl/issues/2262
Reported-by: Jeroen Ooms
Assisted-by: Wes Hinsley
Assisted-by: Rich FitzJohn
Ref: https://curl.se/mail/lib-2021-02/0066.html
Reported-by: Morten Minde Neergaard
Closes https://github.com/curl/curl/pull/6673
Input challenges and returned messages are now in binary.
Conversions from/to base64 are performed by callers (currently curl_sasl.c
and http_ntlm.c).
Closes#6654
A struct bufref holds a buffer pointer, a data size and a destructor.
When freed or its contents are changed, the previous buffer is implicitly
released by the associated destructor. The data size, although not used
internally, allows binary data support.
A unit test checks its handling methods: test 1661
Closes#6654
Reset FD_WRITE by sending zero bytes which is permissible
and will be treated by implementations as successful send.
Without this we won't be notified in case a socket is still
writable if we already received such a notification and did
not send any data afterwards on the socket. This would lead
to waiting forever on a writable socket being writable again.
Assisted-by: Tommy Odom
Reviewed-by: Jay Satiro
Reviewed-by: Marcel Raad
Tested-by: tmkk on github
Bug: #6146Closes#6245
1. Consolidate pre-checks into a single Curl_poll call:
This is an attempt to restructure the code in Curl_multi_wait
in such a way that less syscalls are made by removing individual
calls to Curl_socket_check via SOCKET_READABLE/SOCKET_WRITABLE.
2. Avoid resetting the WinSock event multiple times:
We finally call WSAResetEvent anyway, so specifying it as
an optional parameter to WSAEnumNetworkEvents is redundant.
3. Wakeup directly in case no sockets are being monitoring:
Fix the WinSock based implementation to skip extra waiting by
not sleeping in case no sockets are to be waited on and just
the WinSock event is being monitored for wakeup functionality.
Assisted-by: Tommy Odom
Reviewed-by: Jay Satiro
Reviewed-by: Marcel Raad
Bug: #6146Closes#6245
This reverts commit 2260e0ebe6,
also restoring previous follow up changes which were reverted.
Authored-by: rcombs on github
Authored-by: Marc Hörsken
Reviewed-by: Jay Satiro
Reviewed-by: Marcel Raad
Restores #5634
Reverts #6281
Part of #6245
This reverts commit 1cba36d216.
CMake provides properties that can be set on a target to rename the
output artifact without changing the name of a target.
Ref: #6899
Add parser for CURLOPT_SSL_CIPHER_LIST option for Secure Transport (ST)
back-end. Similar to NSS and GSKit back-ends, new code parses string
value and configures ST library to use those ciphers for communication.
Create cipher spec data structure and initialize the array of specs with
cipher number, name, alias, and 'weak' flag.
Mark triple-DES ciphers as 'weak', and exclude them from the default
ciphers list.
Closes#6464
By using #ifdef on the symbol names to work on anything that don't
provide them. SCO OpenServer 5.0.7, sys/socket.h does not define either
SHUT_RDWR, SHUT_RD, and SHUT_WR.
Reported-by: Kevin R. Bulgrien
Bug: https://curl.se/mail/lib-2021-04/0073.htmlCloses#6925
The ConnectionExists() function will note that the new transfer wants
less then h2 and that it can't multiplex it and therefor opt to open a
new connection instead.
Storing a stream error in the per-connection struct was an error that lead to
race conditions as subsequent stream handling could overwrite the error code
before it was used for the stream with the actual problem.
Closes#6910
This was this one condition where the stream could be closed due to an
error and the function would still wrongly just return 0 for it.
Reported-by: Gergely Nagy
Fixes#6862Closes#6910
When the host name in a URL is given as an IPv4 numerical address, the
address can be specified with dotted numericals in four different ways:
a32, a.b24, a.b.c16 or a.b.c.d and each part can be specified in
decimal, octal (0-prefixed) or hexadecimal (0x-prefixed).
Instead of passing on the name as-is and leaving the handling to the
underlying name functions, which made them not work with c-ares but work
with getaddrinfo, this change now makes the curl URL API itself detect
and "normalize" host names specified as IPv4 numericals.
The WHATWG URL Spec says this is an okay way to specify a host name in a
URL. RFC 3896 does not allow them, but curl didn't prevent them before
and it seems other RFC 3896-using tools have not either. Host names used
like this are widely supported by other tools as well due to the
handling being done by getaddrinfo and friends.
I decided to add the functionality into the URL API itself so that all
users of these functions get the benefits, when for example wanting to
compare two URLs. Also, it makes curl built to use c-ares now support
them as well and make curl builds more consistent.
The normalization makes HTTPS and virtual hosted HTTP work fine even
when curl gets the address specified using one of the "obscure" formats.
Test 1560 is extended to verify.
Fixes#6863Closes#6871
... by fixing macros to do-while constructs and moving out the calls to
"break" outside of the actual macro. It also fixes the problem where the
macro was used witin a loop and the break didn't do right.
Reported-by: Emil Engler
Fixes#6847Closes#6909
... previously they were supported if a TLS library would (unexpectedly)
still support them, but from this change they will be refused already in
curl_easy_setopt(). SSLv2 and SSLv3 have been known to be insecure for
many years now.
Closes#6773
The code in cr_recv was returning prematurely as soon as the socket
reported no more data to read. However, this could be leaving some
unread plaintext data in the rustls session from a previous call,
causing causing the transfer to hang if the socket never receives
further data.
We need to ensure that the session is fully drained of plaintext data
before returning CURLE_AGAIN to the caller.
Reviewed-by: Jacob Hoffman-Andrews
Closes#6894
Add test 676 to verify that setting CURLOPT_COOKIEFILE to NULL again clears
the cookiejar from memory.
Reported-by: Stefan Karpinski
Fixes#6889Closes#6891
According to Microsoft document MS-NLMP, current flags usage is not
accurate: flag NTLMFLAG_NEGOTIATE_NTLM2_KEY controls the use of
extended security in an NTLM authentication message and NTLM version 2
cannot be negotiated within the protocol.
The solution implemented here is: if the extended security flag is set,
prefer using NTLM version 2 (as a server featuring extended security
should also support version 2). If version 2 has been disabled at
compile time, use extended security.
Tests involving NTLM are adjusted to this new behavior.
Fixes#6813Closes#6849
In 2682e5f5, several instances of AC_HEADER_TIME were removed since
it is a deprecated autoconf macro. However, this was the macro that
defined TIME_WITH_SYS_TIME, which was used to indicate that <time.h>
can be included alongside <sys/time.h>. TIME_WITH_SYS_TIME is still
used in the configure test body and since it is no longer defined,
<time.h> is *not* included on systems that have <sys/time.h>.
In particular, at least on musl libc and glibc, <sys/time.h> does
not implicitly include <time.h> and does not declare clock_gettime,
gmtime_r, or localtime_r. This causes configure to fail to detect
those functions.
The AC_HEADER_TIME macro deprecation text says
> All current systems provide time.h; it need not be checked for.
> Not all systems provide sys/time.h, but those that do, all allow
> you to include it and time.h simultaneously.
So, to fix this issue, simply include <time.h> unconditionally when
testing for time-related functions and in libcurl, and don't bother
checking for it.
Closes#6859
This was previously defined by the obsolete AC_TYPE_SIGNAL macro,
which was removed in 2682e5f5. The deprecation text says
> Your code may safely assume C89 semantics that RETSIGTYPE is void.
So, remove it and just use void instead.
Closes#6861
This removes the last occurrence of PATH_MAX inside our libssh
implementation by calculating the path length from the string length of
the two components.
Closes#6829
instead of 13, before the server has told how many streams it
accepts. The server can always reject new streams anyway if we go above
what it accepts.
Ref: #6826Closes#6852
After 957bc1881e686f9714c4e6a01bf33535091f0e21, we no longer compute an
expected_size for directories. This has the upshot that when we compare
even an empty Range with the available size, we fail.
This brings back the previous behaviour, which was to succeed, but with
empty content. This also removes the "Accept-ranges: bytes" header,
which is nonsensical on directories.
Adds test 3016
Fixes#6845Closes#6846
for GnuTLS, BearSSL, mbedTLS, NSS, SChannnel, Secure Transport and
wolfSSL...
Regression since 88dd1a8a11 (shipped in 7.76.0)
Reported-by: Kenneth Davidson
Reported-by: romamik om github
Fixes#6825Closes#6827
- Define Curl_resolver_error function only when USE_CURL_ASYNC.
Prior to this change building curl without an asynchronous resolver
backend (c-ares or threaded) and without DoH (DNS-over-HTTPS, which is
also asynchronous but independent of resolver backend) would cause a
build error since Curl_resolver_error is called by and evaluates
variables only available in asynchronous builds.
Reported-by: Benbuck Nason
Fixes https://github.com/curl/curl/issues/6831
Closes https://github.com/curl/curl/pull/6832
