Curl_read/Curl_write clarifications
- replace `Curl_read()`, `Curl_write()` and `Curl_nwrite()` to 1clarify
when and at what level they operate
- send/recv of transfer related data is now done via
`Curl_xfer_send()/Curl_xfer_recv()` which no longer has
socket/socketindex as parameter. It decides on the transfer setup of
`conn->sockfd` and `conn->writesockfd` on which connection filter
chain to operate.
- send/recv on a specific connection filter chain is done via
`Curl_conn_send()/Curl_conn_recv()` which get the socket index as
parameter.
- rename `Curl_setup_transfer()` to `Curl_xfer_setup()` for naming
consistency
- clarify that the special CURLE_AGAIN handling to return `CURLE_OK`
with length 0 only applies to `Curl_xfer_send()` and CURLE_AGAIN is
returned by all other send() variants.
SingleRequest reshuffling
- move functions into request.[ch]
- differentiate between reset and free
- add Curl_req_done() to perform last actions
- add a send `bufq` to SingleRequest for future use in keeping upload data
Closes#12963
In order to make MSAN happy:
==2200945==WARNING: MemorySanitizer: use-of-uninitialized-value
#0 0x596f3b3ed246 in curlx_strtoofft [...]/libcurl/src/lib/strtoofft.c:239:11
#1 0x596f3b402156 in Curl_httpchunk_read [...]/libcurl/src/lib/http_chunks.c:149:12
#2 0x596f3b348550 in readwrite_data [...]/libcurl/src/lib/transfer.c:607:11
[...]
==2202041==WARNING: MemorySanitizer: use-of-uninitialized-value
#0 0x5a3fab66a72a in Curl_parse_port [...]/libcurl/src/lib/urlapi.c:547:8
#1 0x5a3fab650645 in parse_authority [...]/libcurl/src/lib/urlapi.c:796:12
#2 0x5a3fab6740f6 in parseurl [...]/libcurl/src/lib/urlapi.c:1176:16
#3 0x5a3fab664fc5 in parseurl_and_replace [...]/libcurl/src/lib/urlapi.c:1342:12
[...]
==2202320==WARNING: MemorySanitizer: use-of-uninitialized-value
#0 0x569076a0d6b0 in ipv4_normalize [...]/libcurl/src/lib/urlapi.c:683:12
#1 0x5690769f2820 in parse_authority [...]/libcurl/src/lib/urlapi.c:803:10
#2 0x569076a160f6 in parseurl [...]/libcurl/src/lib/urlapi.c:1176:16
#3 0x569076a06fc5 in parseurl_and_replace [...]/libcurl/src/lib/urlapi.c:1342:12
[...]
Signed-off-by: Louis Solofrizzo <lsolofrizzo@scaleway.com>
Closes#12995
Refactoring of the client writer that passes the data to the
client/application's callback functions.
- split out into own source cw-out.[ch] from sendf.c
- move tempwrite and tempcount from data->state into the context of the
client writer
- redesign the 3 tempwrite dynbufs as a linked list of dynbufs. On
paused transfers, this allows to "record" interleaved HEADER/BODY
chunks to be "played back" in the same order on unpausing.
- keep the overall size limit of all buffered data to DYN_PAUSE_BUFFER.
On exceeding that, return CURLE_TOO_LARGE instead of
CURLE_OUT_OF_MEMORY as before.
- add method to be called when a transfer is DONE to allow writing of
any data still buffered
- when paused, record HEADER writes exactly as they come for later
playback. HEADERs are documented to be written one-by-one.
Closes#12898
- from `conn->bits.authneg` to `data->req.authneg`
- this is a property of the request about to be made
and not a property of the connection
- in multiuse connections, transfer could step on each others
toes here potentially.
Closes#12949
- add a client writer that does "push" response
headers written to the client if the headers api
is enabled
- remove special handling in sendf.c
- needs to be installed very early on connection
setup to catch CONNECT response headers
Closes#12880
Remove curl_mimepart object from UserDefined structure when
CURL_DISABLE_MIME flag is active. Reduce size of UserDefined structure.
Also remove unreachable code: when CURL_DISABLE_MIME is set, httpreq can
never have HTTPREQ_POST_MIME value and the same goes for the
CURL_DISABLE_FORM_API flag and the HTTPREQ_POST_FORM value
Closes#12948
... to not rely on wrapping, since it is an undefined behavior that is
not what always might happen. This is in our private strtoff() parser
function, used only on platforms without a native version.
Reported-by: vulnerabilityspotter on hackerone
Closes#12990
Prior to this change CURLOPT_PROXY_TLSAUTH_TYPE would return
CURLE_BAD_FUNCTION_ARGUMENT on any type other than NULL. Since there is
only one type of TLS auth and it is also the default (SRP) the TLS auth
would work anyway.
Closes https://github.com/curl/curl/pull/12981
- Support I32 & I64 (eg: %I64d) for all Win32 builds.
Prior to this change mprintf support for the I format prefix, which is a
Microsoft extension, was dependent on the compiler used.
When Borland compiler support was removed in fd7ef00f the prefix was
then no longer supported for that compiler; however since it's still
possible to build with Borland I'm restoring support for the prefix in
this way.
Reported-by: Paweł Witas
Fixes https://github.com/curl/curl/issues/12944
Closes https://github.com/curl/curl/pull/12950
- OR the event bitmask to data->state.select_bits instead of overwriting
them. They are cleared again on use.
Reported-by: 5533asdg on github
Fixes#12971Closes#12972
- refs #12397 where it is dicussed how to en-/disable verbose output
of DoH operations
- introducing `struct curl_trc_feat` to track a curl feature for
tracing
- adding `data->state.feat` optionally pointing to the feature a
transfer belongs to
- adding trace functions and verbosity checks on features
- using trace feature in DoH code
- documenting `doh` as feature for `--trace-config`
Closes#12411
- when data arrived in several chunks, the collection into
the passed buffer always started at offset 0, overwriting
the data already there.
adding test_20_07 to verify fix
- debug environment var CURL_WS_CHUNK_SIZE can be used to
influence the buffer chunk size used for en-/decoding.
Closes#12945
Also fix the tests. New implementation tested with GNU libmicrohttpd.
The new numbers in tests are real SHA-512/256 numbers (not just some
random ;) numbers ).
- set our idle timeout as transport parameter
- query negotiated idle timeout for connection alive checks
- query number of available bidi streams on a connection
- use write_ex2 with SSL_WRITE_FLAG_CONCLUDE to signal
EOF on last chunk write, so stream close does not
require an additional QUIC packet
Closes#12933
- Change the 1 second SO_SNDBUF update limit from per transfer to per
connection.
Prior to this change many transfers over the same connection could cause
many SO_SNDBUF updates made to that connection per second, which was
unnecessary.
Closes https://github.com/curl/curl/pull/12911
- Treat TLS connection close (either due to a close_notify from the
server or just closed due to receiving 0) as pending data.
This is because in some cases schannel_recv knows the connection is
closed but has to return actual pending data so it can't return 0 or an
error to indicate no more data. In this case schannel_recv must be
called again, which only happens if readwrite_data sees that there is
still pending data.
Prior to this change if the total size of the body that libcurl expected
to receive from the server was unknown then it was possible under some
network conditions that libcurl would hang waiting to receive more data,
when in fact a close_notify alert indicating no more data would be sent
was already processed.
Fixes https://github.com/curl/curl/issues/12894
Closes https://github.com/curl/curl/pull/12910
- when waiting on the data connection, always add the control socket to
the pollset on state STOP or let the pingpong add the socket according
to its needs.
Reported-by: Fabian Vogt
Fixes#12901Closes#12913
- can be borrowed by transfer during recv-write operation
- needs to be released before borrowing again
- adjustis size to `data->set.buffer_size`
- used in transfer.c readwrite_data()
Closes#12805
- remove the ftp special handling from sendf.c
- let ftp_do() add a client writer that does
the linened conversions
- change the lineend conversion to no longer
modify the passed buffer, but write smaller
chunks to the next cwriter instead. The
inefficiency of this will be mitigated once
we add output buffering for all client writes.
Closes#12878
- add test_05_04 for requests using http/1.0, http/1.1 and h2 against an
Apache resource that does an unclean TLS shutdown.
- revert special workarund in openssl.c for suppressing shutdown errors
on multiplexed connections
- vlts.c restore to its state before 9a90c9dd64Fixes#12885Fixes#12844Closes#12848
Create the line in a dynbuf. Aborts the reading of the file on
errors. Avoids having to always allocate maximum amount from the
start. Avoids direct malloc.
Closes#12846
- improve info logging when peer verification fails to indicate
if DNS name or ip address has been tried to match
- add test case for contacting https proxy with ip address
- add pytest env check on loaded credentials and re-issue
when they are no longer valid
- disable proxy ip address test for bearssl, since not supported there
Ref: #12831Closes#12838
The psl_check_version_number() API was added in libpsl 0.11.0. CentOS 7
ships with version 0.7.0 which lacks this API. Revert to using the older
versioning API if we detect an old libpsl version.
Follow-up to 72bd88adde
Bug: https://curl.se/mail/archive-2024-02/0004.html
Reported-by: Scott Mutter
Closes#12872
- use the new `Curl_xfer_write_resp()` to write incoming responses
directly to the client
- eliminates `stream->recvbuf`
- memory consumption on parallel transfers minimized
Closes#12828
and mark the stream for close, but return OK since the response this far
was ok - if headers were received. Partly because this is what curl has
done traditionally.
Test 499 verifies. Updates test 689.
Reported-by: Sergey Bronnikov
Bug: https://curl.se/mail/lib-2024-02/0000.htmlCloses#12842
For active mode transfers.
Due to some interesting timing, curl can sometimes get the 226 (transfer
complete) over the control channel first, before the data connection
signals readability. If this happens, use that as a signal to check the
data connection.
Additionally, set the socket filter in listen mode *before* the
PORT/EPRT command is issued, to reduce the risk that the little time gap
could interfere.
This issue never reproduced for me on Debian and takes several hundred
rounds for me to trigger on my mac.
Reported-by: Stefan Eissing
Fixes#12823Closes#12841
Since the QUIC/h3 code has no knowledge or handling of multissl it might
bring unintended consequences if we allow it.
configure, cmake and curl_setup.h all now reject this combination.
Assisted-by: Viktor Szakats
Assisted-by: Gisle Vanem
Ref: #12806Closes#12807
- delete redundant warning suppressions for `-Wformat-nonliteral`.
This now relies on `CURL_PRINTF()` and it's theoratically possible
that this macro isn't active but the warning is. We're ignoring this
as a corner-case here.
- replace two pragmas with code changes to avoid the warnings.
Follow-up to aee4ebe591#12803
Follow-up to 0923012758#12540
Follow-up to 3829759bd0#12489
Reviewed-by: Daniel Stenberg
Closes#12812
Stefan Eissing
Daniel Stenberg
Louis Solofrizzo
MAntoniak
kpcyrd
Scott Talbert
Jay Satiro
Evgeny Grin
Peter Krefting
Faraz Fallahi
Viktor Szakats