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* Apply various suggestions by cppcheckDavid Kalnischkies2019-07-081-1/+1
| | | | Reported-By: cppcheck
* Merge tag '1.8.2'Julian Andres Klode2019-06-111-28/+51
|\ | | | | | | apt Debian release 1.8.2
| * methods: https: handle requests for TLS re-handshakeMichael Zhivich2019-05-211-28/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When accessing repository protected by TLS mutual auth, apt may receive a "re-handshake" request from the server, which must be handled in order for download to proceed. This situation arises when the server requests a client certificate based on the resource path provided in the GET request, after the inital handshake in UnwrapTLS() has already occurred, and a secure connection has been established. This issue has been observed with Artifactory-backed Debian repository. To address the issue, split TLS handshake code out into its own method in TlsFd, and call it when GNUTLS_E_REHANDSHAKE error is received. Signed-off-by: Michael Zhivich <mzhivich@akamai.com> (merged from Debian/apt#93) LP: #1829861
* | Fix new gcc-9 warning -Wpessimizing-moveDavid Kalnischkies2019-04-161-1/+1
|/ | | | | | | | warning: moving a local object in a return statement prevents copy elision [-Wpessimizing-move] Reported-By: gcc-9 Gbp-Dch: Ignore
* Handle a missed case of timed out ip addressesJulian Andres Klode2018-05-241-0/+1
| | | | | | | Correctly register timed out IP addresses from a timed out select() call as a bad address so we do not try it again. LP: #1766542
* Reword error for timed out read/write on SOCKS proxyDavid Kalnischkies2018-05-191-1/+6
| | | | Closes: #898886
* Remove obsolete RCS keywordsGuillem Jover2018-05-071-1/+0
| | | | Prompted-by: Jakub Wilk <jwilk@debian.org>
* Correctly report transient errors againJulian Andres Klode2018-01-031-4/+8
| | | | | | | | | | | | | | Commit 47c0bdc310c8cd62374ca6e6bb456dd183bdfc07 ("report transient errors as transient error") accidentally changed some connection failures to become non-transient, because the result of the error checks where being ignored and then fatal error was returned if an error was pending - even if that error was trivial. After the merge of pu/happy-eyeballs2a this becomes a lot clearer, and easy to fix. Gbp-Dch: ignore Regression-Of: 47c0bdc310c8cd62374ca6e6bb456dd183bdfc07
* Add rapid "happy eyeballs" connection fallback (RFC 8305)Julian Andres Klode2018-01-031-26/+100
| | | | | | | | | | | | | | | | | | | | | | Try establishing connections in alternating address families in rapid intervals of 250 ms, adding more connections to the wait list until one succeeds (RFC 8305, happy eyeballs 2). It is important that WaitAndCheckErrors() waits until it has a successful connection, a time out, or all connections failed - otherwise the timing between tries might be wrong, and the final long wait might exit early because one connection failed without trying the others. Timing wise, this only works correctly on Linux, as select() counts down there. But we rely on that in some other places too, so this is not the time to fix that. Timeouts are only reported in the final long wait - the short inner waits are expected to time out more often, and multiple times, we do not want to report them. Closes: #668948 LP: #1308200 Gbp-Dch: paragraph
* connect: Extract Connection::CheckError() methodJulian Andres Klode2018-01-031-0/+6
| | | | | | | | Extracting the error checking method allows us to reuse it in different places, so we can move the waiting and checking out of DoConnect() eventually. Gbp-Dch: ignore
* connect: Store the IP used when picking a connectionJulian Andres Klode2018-01-031-9/+5
| | | | | | There's no real point in storing the IP address while resolving it - failure messages include the IP address in any case. Do this when picking the connection for actual use instead.
* connect: Extract a Connection structJulian Andres Klode2018-01-031-8/+36
| | | | | | | | This struct holds information about a connection attempt, like the addrinfo, the resolved address, the fd for the connection, and so on. Gbp-Dch: ignore
* connect: Alternate address families for addressesJulian Andres Klode2018-01-031-24/+48
| | | | | | | | | As a first step to implementing Happy Eyeballs version 2, we need to order the list of hosts getaddrinfo() gave us so it alternates between preferred and other address families. RFC: https://tools.ietf.org/html/rfc8305 Gbp-Dch: ignore
* report transient errors as transient errorsDavid Kalnischkies2017-12-131-79/+182
| | | | | | | | | | | | The Fail method for acquire methods has a boolean parameter indicating the transient-nature of a reported error. The problem with this is that Fail is called very late at a point where it is no longer easily identifiable if an error is indeed transient or not, so some calls were and some weren't and the acquire system would later mostly ignore the transient flag and guess by using the FailReason instead. Introducing a tri-state enum we can pass the information about fatal or transient errors through the callstack to generate the correct fails.
* proper error reporting for v3 onion servicesDavid Kalnischkies2017-09-261-3/+3
| | | | | | | | | APT connects just fine to any .onion address given, only if the connect fails somehow it will perform checks on the sanity of which in this case is checking the length as they are well defined and as the strings are arbitrary a user typing them easily mistypes which apt should can be slightly more helpful in figuring out by saying the onion hasn't the required length.
* Reformat and sort all includes with clang-formatJulian Andres Klode2017-07-121-10/+10
| | | | | | | | | | | | | This makes it easier to see which headers includes what. The changes were done by running git grep -l '#\s*include' \ | grep -E '.(cc|h)$' \ | xargs sed -i -E 's/(^\s*)#(\s*)include/\1#\2 include/' To modify all include lines by adding a space, and then running ./git-clang-format.sh.
* don't set ip addresses as server names for SNIDavid Kalnischkies2017-07-031-2/+12
| | | | | | | | | It is kinda unlikely that apt will ever encounter a certificate for an IP and a user actually using it, but the API documentation for gnutls_server_name_set explicitly says that "IPv4 or IPv6 addresses are not permitted to be set by this function.", so we should follow it. [jak@d.o: Slightly rebased]
* Swap file descriptors before the handshakeJulian Andres Klode2017-07-031-2/+4
| | | | | | | | | | This makes more sense. If the handshake failed midway, we still should run the gnutls bye stuff. The thinking here is to only set the fd after the session setup, as we do not modify it before, so if it fails in session setup, you retain a usable file descriptor. Gbp-Dch: ignore
* Do not error out, only warn if ca certificates are not availableJulian Andres Klode2017-07-031-5/+5
| | | | This probably makes more sense if Verify-Peer is set to off.
* tls: Add more details to error messages, and detect more errorsJulian Andres Klode2017-07-031-9/+11
| | | | | This should make it easier to figure out what was going on.
* Make Verify-Host and Verify-Peer independent againJulian Andres Klode2017-07-011-2/+2
| | | | | We can actually just pass null as a hostname, so let's just do that when Verify-Host is set to false.
* TLS support: Error out on unsupported curl optionsJulian Andres Klode2017-06-301-2/+4
| | | | | Silently ignoring the options might be a security issue, so produce an error instead.
* Improve closing the TLS connectionJulian Andres Klode2017-06-301-3/+3
| | | | | | | | | | If gnutls_session_bye() exited with an error, we never closed the underlying file descriptor, causing the method to think the connection was still open. This caused problems especially in test-partial-file-support where we checked that a "complete" file and an incomplete file work. The first GET returns a 416 with Connection: close, and the next GET request then accidentally reads the body of the 416 as the header for its own request.
* Allow running the TLS stack on any lower connectionJulian Andres Klode2017-06-301-1/+19
| | | | | This is especially needed if we use an HTTPS proxy to CONNECT to an HTTPS URI, as we run TLS-inside-TLS then.
* Reset failure reason when connection was successfulJulian Andres Klode2017-06-301-1/+3
| | | | | | | | | | | | When APT was trying multiple addresses, any later error somewhere else would be reported with ConnectionRefused or ConnectionTimedOut as the FailReason because that was set by early connect attempts. This causes APT to handle the failures differently, leading to some weirdly breaking test cases (like the changed one). Add debugging to the previously failing test case so we can find out when something goes wrong there again.
* Don't read CaInfo if not specified (missing else)Julian Andres Klode2017-06-301-0/+1
| | | | | | | This fixes a regression from ~alpha2. Closes: #866559 Gbp-Dch: Full
* http: Only use system CA store if CaInfo is not setJulian Andres Klode2017-06-291-7/+10
| | | | | It turns out that curl only sets the system trust store if the CaInfo option is not set, so let's do the same here.
* Improve error message if system CA store is emptyJulian Andres Klode2017-06-291-1/+4
| | | | | | Tell the user to install ca-certificates. Closes: #866377
* use port from SRV record instead of initial portDavid Kalnischkies2017-06-291-1/+5
| | | | | | | | | | | An SRV record includes a portnumber to use with the host given, but apt was ignoring the portnumber and instead used either the port given by the user for the initial host or the default port for the service. In practice the service usually runs on another host on the default port, so it tends to work as intended and even if not and apt can't get a connection there it will gracefully fallback to contacting the initial host with the right port, so its a user invisible bug most of the time.
* Introduce Acquire::AllowTLS to turn off TLS supportJulian Andres Klode2017-06-281-0/+3
| | | | | | As requested by Henrique de Moraes Holschuh, here comes an option to disable TLS support. If the option is set to false, the internal TLS layer is disabled.
* methods: http: Drain pending data before selectingJulian Andres Klode2017-06-281-0/+9
| | | | | | | | GnuTLS can already have data pending in its buffers, we need to to drain that first otherwise select() might block indefinitely. Gbp-Dch: ignore
* methods: Add HTTPS support to http method, using GnuTLSJulian Andres Klode2017-06-281-0/+361
| | | | | | | | | | | | | | The http method will eventually replace the curl-based https method, but for now, this is an opt-in experiment that can be enabled by setting Dir::Bin::Methods::https to "http". Known issues: - We do not support HTTPS proxies yet - We do not support proxying HTTPS connections yet (CONNECT) - IssuerCert and SslForceVersion are unsupported Gbp-Dch: Full
* methods: connect: Switch from int fds to new MethodFdJulian Andres Klode2017-06-281-15/+41
| | | | | | | | Use std::unique_ptr<MethodFd> everywhere we used an integer-based file descriptor before. This allows us to implement stuff like TLS support easily. Gbp-Dch: ignore
* methods: connect: Change PkgAcqMethod to aptMethodJulian Andres Klode2017-06-281-7/+8
| | | | | | | This will allow us to access ConfigFind() and stuff which makes it possible for us to implement TLS support. Gbp-Dch: ignore
* abort connection on '.' target replies in SRVDavid Kalnischkies2016-09-041-0/+8
| | | | | | | | | | | | | | | Commit 3af3ac2f5ec007badeded46a94be2bd06b9917a2 (released in 1.3~pre1) implements proper fallback for SRV, but that works actually too good as the RFC defines that such an SRV record should indicate that the server doesn't provide this service and apt should respect this. The solution is hence to fail again as requested even if that isn't what the user (and perhaps even the server admins) wanted. At least we will print a message now explicitly mentioning SRV to point people in the right direction. Reported-In: https://bugs.kali.org/view.php?id=3525 Reported-By: Raphaël Hertzog
* methods/connect.cc: Only use AI_IDN if definedJulian Andres Klode2016-08-261-0/+2
| | | | Gbp-Dch: ignore
* block direct connections to .onion domains (RFC7687)David Kalnischkies2016-08-111-1/+19
| | | | | | | | | | | | | | | Doing a direct connect to an .onion address (if you don't happen to use it as a local domain, which you shouldn't) is bound to fail and does leak the information that you do use Tor and which hidden service you wanted to connect to to a DNS server. Worse, if the DNS is poisoned and actually resolves tricking a user into believing the setup would work correctly… This does block also the usage of wrappers like torsocks with apt, but with native support available and advertised in the error message this shouldn't really be an issue. Inspired-by: https://bugzilla.mozilla.org/show_bug.cgi?id=1228457
* keep trying with next if connection to a SRV host failedDavid Kalnischkies2016-07-061-7/+23
| | | | | | | | | | | | Instead of only trying the first host we get via SRV, we try them all as we are supposed to and if that isn't working we try to connect to the host itself as if we hadn't seen any SRV records. This was already the intend of the old code, but it failed to hide earlier problems for the next call, which would unconditionally fail then resulting in an all around failure to connect. With proper stacking we can also keep the error messages of each call around (and in the order tried) so if the entire connection fails we can report all the things we have tried while we discard the entire stack if something works out in the end.
* Do not remove a not working SrvRecords server twiceMichael Vogt2016-01-051-3/+1
| | | | | | | The PopFromSrvRecs() already removed the entry from the active list, so the extra SrvRecords.erase() was incorrect. Git-Dch: ignore
* activate AI_IDN by default to support IDN domainsDavid Kalnischkies2015-11-051-0/+2
| | | | | | | AI_IDN is a glibc extension, but we can worry about this at the time actually anyone is seriously trying apt on non-glibc systems. Closes: 763437
* allow getaddrinfo flag AI_ADDRCONFIG to be disabledDavid Kalnischkies2015-11-041-1/+6
| | | | | | | | | This flags is generally handy to avoid having to deal with ipv6 results on an ipv4-only system, but it prevents e.g. the testcases from working if the testsystem has no configured address at the moment (expect loopback), so allow it to be sidestepped and let the testcases sidestep it. Git-Dch: Ignore
* fix some unused parameter/variable warningsDavid Kalnischkies2015-08-311-6/+4
| | | | | Reported-By: gcc Git-Dch: Ignore
* Fix typoMichael Vogt2015-08-241-1/+1
| | | | | Thanks: Julian Andres Klode Git-Dch: ignore
* Add basic (non weight adjusted) shuffling for SrvRecords selectionMichael Vogt2015-08-201-2/+3
| | | | | Also add "Debug::Acquire::SrvRecs" debug option and the option "Acquire::EnableSrvRecods" to allow disabling this lookup.
* cleanupMichael Vogt2015-08-181-10/+8
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* when using srv records, use the next server if one fails to connectMichael Vogt2014-05-231-17/+40
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* WIP make connect use GetSrvRecordsMichael Vogt2014-05-221-0/+13
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* cleanup headers and especially #includes everywhereDavid Kalnischkies2014-03-131-1/+1
| | | | | | | | Beside being a bit cleaner it hopefully also resolves oddball problems I have with high levels of parallel jobs. Git-Dch: Ignore Reported-By: iwyu (include-what-you-use)
* correct some style/performance/warnings from cppcheckDavid Kalnischkies2014-01-161-3/+3
| | | | | | | | The most "visible" change is from utime to utimensat/futimens as the first one isn't part of POSIX anymore. Reported-By: cppcheck Git-Dch: Ignore
* * methods/connect.cc:Michael Vogt2013-03-251-2/+2
| | | - use Errno() instead of strerror(), thanks to David Kalnischk
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