ssl_filter_open() copies ssl_client_mode into the service's
configuration, but the filters deciding when to begin TLS towards the
server read the global value instead: the last ssl_client_mode in the
configuration applied to every service, and a reload changed it for the
services still running.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
(cherry picked from commit bab80ef684)
A socket which hung up and of which nothing is asked was given to poll()
as INVALID_SOCKET, so that poll() would not return at once for the
hang-up every time. poll() ignores a negative descriptor, but SOCKET is
unsigned on Windows, and WSAPoll fails the whole call for it: sockmap()
ended the session as soon as a client half-closed. Such a socket is now
not in the array at all.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
(cherry picked from commit 98fd0f329f)
sockmap() took a hang-up on a socket it had data to write to for a peer
it could no longer write to. With poll() a hang-up comes once both sides
are shut down, so that held. WSAPoll reports one as soon as the peer has
half-closed, still reading, and a half-closed client got nothing on
Windows: the test added with the previous fix failed there.
The write is now tried, and a peer really gone makes it fail, which
ends the connection as before. WSAPoll keeps reporting the hang-up
whether the socket has room or not, so on Windows room is waited for
with select() first unless poll() reported it too.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
(cherry picked from commit ddefa40affb76de267a8be1cf59a183a8eb77e32)
When the client shuts down its sending side, sockmap() shuts down the
server's in turn, and once the server has answered and closed, poll()
reports a hang-up on its socket. A socket sockmap() had nothing to ask
of at that moment, its buffer being full for a slow client, was still
polled, and a hang-up there ended both directions: whatever of the
answer was still unread in the kernel was dropped and the client got an
end of stream in the middle of it, megabytes short with large answers.
A hang-up on such a socket now only marks it: what is left is read
once the buffer has room, up to the end of the stream as usual. Errors
still end the connection. Since poll() reports a hang-up whatever is
asked, the socket is left out of poll() while nothing is asked of it.
The same holds for the client's side, for an upload cut short after the
server half-closes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
(cherry picked from commit 8c87b43a2a)
A kept-alive client connection reuses the connection to the server while
requests go to the same host. The check compared the start of the request
line up to the end of the host, method included, so a POST after a GET to
the same host, or a GET after a POST, closed the server connection and
opened another one. Only the host and port are compared now.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The C library reads /etc/localtime on the first use of local time and
connects to /dev/log on the first syslog() call. With a chroot before
either, every local time became UTC and every syslog message was lost.
The time zone is now loaded before chroot() and openlog() connects at
once. The chroot entry of 3proxy.cfg(5) lists what PAM, LDAP and ODBC
still need inside the chroot.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Without -Ne, the reply to CONNECT and BIND named the local address of the
client's connection to the proxy instead of the socket towards the
destination: the branch meant for UDP ASSOCIATE also took these. A BIND
client was told the proxy's own port and the peer could never reach the
listener. Introduced with -Ne / -Ni (0c8be90).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The benchmarks live on the devel branch only, so link to their results
there; master has no bench/.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
-s takes the directions to splice: -s1 what the server sends (downloads),
-s2 what the client sends (uploads), -s3 both. -s alone (-s7) splices both
only where it pays, as -s5 and -s6 do for one direction:
- a body of known length is spliced if at least 16K of it is left to read
once what is already buffered is counted, so an answer read whole with
its headers is just copied;
- a stream of unknown length starts copied, is spliced after 2 reads in a
row of at least 16K, and goes back to copying after 3 splices in a row
of less than 4K, once its pipe is empty.
Pipes are made when a direction first splices and kept with the
connection for its next mappings, so a kept-alive connection no longer
makes and closes two pipes per request; one left holding data by an
error or a timeout is closed. The direction not spliced keeps its buffer.
Before, -s spliced both directions and every mapping made both pipes,
which made small answers slower than without splice: with kept-alive
50K answers 2 pipe2() and 4 close() per request, now none.
Also corrects the default buffer size in the -b help (65536 for TCP).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The reload asked for through /R happens on the next tick of the main
loop, and between the old services stopping and the new ones starting a
request is refused: on Windows the new listener cannot bind the port
until the old one has closed it, and retries with a growing delay. When
the tick fell inside the case, every request after it failed with
ConnectionRefusedError (MSVC run of 98e8dfb). The case now waits for
both services to have restarted after each /R.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
On receive, the struct sockaddr is zeroed and does not have an address
family until recvfrom fills it in. SASIZE assumes that if there is no
address family, it is INET. This means that for IPv6 UDP sockets, the
sockaddr is truncated and the reply is forwarded to the wrong address.
Instead, use sizeof(PROXYSOCKADDRTYPE).
extport binds a local port out of its range and connects from it. A port
which is free to bind may still be half of a pair which is closing from an
earlier connection to the same destination, and Windows fails the connect
with WSAEADDRINUSE where other systems fail the bind and fall back. The
request then failed with error 13 for a reason another port would have
avoided, which is what the range is searched for in the first place.
Retry the connect with another port from the range. Only for that error, so
a destination which is simply unreachable still costs one attempt, and out of
the same ten tries the bind already spends, so the attempts parentretries
makes are not multiplied. EADDRINUSE joins the errno values proxy.h maps to
their Winsock numbers, without which the test would never match on Windows.
parent_ports gave its three services one window between them, which is how
the case met the collision on the Windows runner. Each has its own now.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
pop3p, imapp and smtpp are built with MAILPROXY=true, and ftppr and the
ftp:// scheme of the HTTP proxy with FTP=true; with CMake the switches are
3PROXY_USE_MAILPROXY and 3PROXY_USE_FTP. Neither is in a default build, and
the standalone binaries follow what was built.
A configuration naming one of them is still read either way. The three mail
protocols amount to a STARTTLS negotiation now that mail is carried over
TLS, so without a proxy of their own those names are tlspr speaking the
protocol: the file holds a stand-in which sets the protocol for the
connection and returns tlspr for the caller to run, which serves the
service name and a parent chain alike and leaves conf.c and the redirect
table untouched. FTP has no such fallback, so the service is known, answers
nothing and logs the refusal.
The Linux workflow builds both, so all of it is still compiled and run.
nserver and authnserver parse their argument with parsehost(), which reads
the first colon as the address/port separator, so a bare IPv6 address picks
up a bogus port number. Document the bracket form in 3proxy.cfg(5) and in
both HOWTOs.
Refs #1275, #460
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Package maintainers, Gentoo among them, build from source and had nothing
signed to verify against: the source archive GitHub generates for a tag is
neither signed nor guaranteed to stay byte-identical.
Add release-tarball.yml. It builds 3proxy-<version>.tar.gz with git archive
from the release tag, signs the tarball and SHA256SUMS-src with the release
key, attests build provenance and uploads all four files to the release.
Also drop the SECURITY.md line about Authenticode signing, left over from the
removal of self-signed Windows binaries.
Closes#1270
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Signing the release binaries with a self-signed certificate gives no
trust benefit: Windows does not recognize the issuer, so SmartScreen
warns anyway, and the signature is a frequent trigger for antivirus
false positives.
Drop the Decode Certificate / Extract public certificate / Sign steps
from the MSVC and Watcom workflows, stop shipping the extracted
3proxy.crt in the distribution, and remove the certificate URL from the
build version string.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
bindwithrange() honours a range by setting IP_LOCAL_PORT_RANGE where it
exists, which leaves the kernel to pick a port inside it and skip the ones
still closing. Everywhere else it binds a port out of the range at random,
ten times, and lets the system choose when all ten are taken.
A port which carried a connection cannot be bound again until that close
completes - four minutes of it on Windows - so a window of fifty ports
shared by three services in one configuration can have too few left, and
the connection then binds outside the range and the case fails. The window
is five hundred ports there instead. The Linux one is unchanged: the
kernel picks from it and needs no room to spare.
op_rewrite checked what it built with targetunsafe(), which describes a
path on this machine: on Windows it must name a drive or a share, so a
rewritten request path was refused and every rewrite rule failed there.
A rewrite produces a request path and is checked as one.
The header loop stopped at HTTPSRV_MAXHDR and answered anyway, leaving
the rest of the request in the stream for the next one to be read out
of. It refuses the request instead. A header longer than the buffer
arrives as several lines, so the count bounds what is read rather than
what a client may send in one header.
The test for the buffer growth after a PCRE rewrite sent its request
through to an httpsrv origin, which stops reading at that same cap; it
uses an origin which reads whatever it is sent, since what is under test
is the proxy in the middle.
