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2020-09-20upstream: cap channel input buffer size at 16MB; avoids high memory usedjm@openbsd.org
when peer advertises a large window but is slow to consume the data we send (e.g. because of a slow network) reported by Pierre-Yves David fix with & ok markus@ OpenBSD-Commit-ID: 1452771f5e5e768876d3bfe2544e3866d6ade216
2020-07-03upstream: put back the mux_ctx memleak fix, but only for channels ofdjm@openbsd.org
type SSH_CHANNEL_MUX_LISTENER; Specifically SSH_CHANNEL_MUX_PROXY channels should not have this structure freed. OpenBSD-Commit-ID: f3b213ae60405f77439e2b06262f054760c9d325
2020-07-03upstream: revert r1.399 - the lifetime of c->mux_ctx is more complex;djm@openbsd.org
simply freeing it here causes other problems OpenBSD-Commit-ID: c6fee8ca94e2485faa783839541962be2834c5ed
2020-07-03upstream: fix memory leak of mux_ctx; patch from Sergiy Lozovskydjm@openbsd.org
via bz3189 ok dtucker OpenBSD-Commit-ID: db249bd4526fd42d0f4f43f72f7b8b7705253bde
2020-05-01upstream: We've standardized on memset over bzero, replace a coupledtucker@openbsd.org
that had slipped in. ok deraadt markus djm. OpenBSD-Commit-ID: f5be055554ee93e6cc66b0053b590bef3728dbd6
2020-03-13upstream: fix uninitialized pointers for forward_cancel; ok djmmarkus@openbsd.org
OpenBSD-Commit-ID: 612778e6d87ee865d0ba97d0a335f141cee1aa37
2020-02-28upstream: change explicit_bzero();free() to freezero()jsg@openbsd.org
While freezero() returns early if the pointer is NULL the tests for NULL in callers are left to avoid warnings about passing an uninitialised size argument across a function boundry. ok deraadt@ djm@ OpenBSD-Commit-ID: 2660fa334fcc7cd05ec74dd99cb036f9ade6384a
2020-01-25upstream: the GatewayPorts vs -R listen address selection logic isdjm@openbsd.org
still confusing people, so add another comment explaining the special handling of "localhost"; bz#3258 OpenBSD-Commit-ID: e6bf0f0fbf1c7092bf0dbd9c6eab105970b5b53a
2019-10-09wrap stdint.h include in HAVE_STDINT_HDamien Miller
make the indenting a little more consistent too.. Fixes Solaris 2.6; reported by Tom G. Christensen
2019-07-08upstream: Remove some set but never used variables. ok daraadt@dtucker@openbsd.org
OpenBSD-Commit-ID: 824baf9c59afc66a4637017e397b9b74a41684e7
2019-07-05upstream: When system calls indicate an error they return -1, notderaadt@openbsd.org
some arbitrary value < 0. errno is only updated in this case. Change all (most?) callers of syscalls to follow this better, and let's see if this strictness helps us in the future. OpenBSD-Commit-ID: 48081f00db7518e3b712a49dca06efc2a5428075
2019-06-08upstream: Typo and spelling fixes in comments and error messages.dtucker@openbsd.org
Patch from knweiss at gmail.com via -portable. OpenBSD-Commit-ID: 2577465442f761a39703762c4f87a8dfcb918b4b
2019-05-17upstream: For PermitOpen violations add the remote host and port toflorian@openbsd.org
be able to find out from where the request was comming. Add the same logging for PermitListen violations which where not logged at all. Pointed out by Robert Kisteleki (robert AT ripe.net) input markus OK deraadt OpenBSD-Commit-ID: 8a7d0f1b7175504c0d1dca8d9aca1588b66448c8
2019-05-08upstream: Free channel objects on exit path. Patch from markus atdtucker@openbsd.org
blueflash.cc, ok deraadt OpenBSD-Commit-ID: dbe4db381603909482211ffdd2b48abd72169117
2019-02-08use same close logic for stderr as stdoutDamien Miller
Avoids sending SIGPIPE to child processes after their parent exits if they attempt to write to stderr. Analysis and patch from JD Paul; patch reworked by Jakub Jelen and myself. bz#2071; ok dtucker@
2019-01-20upstream: convert channels.c to new packet APIdjm@openbsd.org
with & ok markus@ OpenBSD-Commit-ID: 0b8279b56113cbd4011fc91315c0796b63dc862c
2019-01-20upstream: begin landing remaining refactoring of packet parsingdjm@openbsd.org
API, started almost exactly six years ago. This change stops including the old packet_* API by default and makes each file that requires the old API include it explicitly. We will commit file-by-file refactoring to remove the old API in consistent steps. with & ok markus@ OpenBSD-Commit-ID: 93c98a6b38f6911fd1ae025a1ec57807fb4d4ef4
2018-12-07upstream: no need to allocate channels_pre/channels_post indjm@openbsd.org
channel_init_channels() as we do it anyway in channel_handler_init() that we call at the end of the function. Fix from Markus Schmidt via bz#2938 OpenBSD-Commit-ID: 74893638af49e3734f1e33a54af1b7ea533373ed
2018-10-04upstream: factor out channel status formatting fromdjm@openbsd.org
channel_open_message() so we can use it in other debug messages OpenBSD-Commit-ID: 9c3903ca28fcabad57f566c9d0045b41ab7d52ba
2018-10-04upstream: include a little more information about the status anddjm@openbsd.org
disposition of channel's extended (stderr) fd; makes debugging some things a bit easier. No behaviour change. OpenBSD-Commit-ID: 483eb6467dc7d5dbca8eb109c453e7a43075f7ce
2018-07-31upstream: avoid expensive channel_open_message() calls; ok djm@markus@openbsd.org
OpenBSD-Commit-ID: aea3b5512ad681cd8710367d743e8a753d4425d9
2018-07-12upstream: remove legacy key emulation layer; ok djm@markus@openbsd.org
OpenBSD-Commit-ID: 2b1f9619259e222bbd4fe9a8d3a0973eafb9dd8d
2018-06-26upstream: fix NULL dereference in open_listen_match_tcpip()djm@openbsd.org
OpenBSD-Commit-ID: c968c1d29e392352383c0f9681fcc1e93620c4a9
2018-06-07upstream: Add a PermitListen directive to control which server-sidedjm@openbsd.org
addresses may be listened on when the client requests remote forwarding (ssh -R). This is the converse of the existing PermitOpen directive and this includes some refactoring to share much of its implementation. feedback and ok markus@ OpenBSD-Commit-ID: 15a931238c61a3f2ac74ea18a98c933e358e277f
2018-04-10upstream: lots of typos in comments/docs. Patch from Karsten Weissdjm@openbsd.org
after checking with codespell tool (https://github.com/lucasdemarchi/codespell) OpenBSD-Commit-ID: 373222f12d7ab606598a2d36840c60be93568528
2018-02-07upstream committb@openbsd.org
The file descriptors for socket, stdin, stdout and stderr aren't necessarily distinct, so check if they are the same to avoid closing the same fd several times. ok djm OpenBSD-Commit-ID: 60d71fd22e9a32f5639d4ba6e25a2f417fc36ac1
2018-01-23upstream commitdjm@openbsd.org
Drop compatibility hacks for some ancient SSH implementations, including ssh.com <=2.* and OpenSSH <= 3.*. These versions were all released in or before 2001 and predate the final SSH RFCs. The hacks in question aren't necessary for RFC- compliant SSH implementations. ok markus@ OpenBSD-Commit-ID: 4be81c67db57647f907f4e881fb9341448606138
2017-12-07upstream commitdjm@openbsd.org
include the addr:port in bind/listen failure messages OpenBSD-Commit-ID: fdadb69fe1b38692608809cf0376b71c2c28e58e
2017-10-25upstream commitdjm@openbsd.org
Add optional rdomain qualifier to sshd_config's ListenAddress option to allow listening on a different rdomain(4), e.g. ListenAddress 0.0.0.0 rdomain 4 Upstream-ID: 24b6622c376feeed9e9be8b9605e593695ac9091
2017-09-24upstream commitdjm@openbsd.org
fix inverted test on channel open failure path that "upgraded" a transient failure into a fatal error; reported by sthen and also seen by benno@; ok sthen@ Upstream-ID: b58b3fbb79ba224599c6cd6b60c934fc46c68472
2017-09-24upstream commitdjm@openbsd.org
write the correct buffer when tunnel forwarding; doesn't matter on OpenBSD (they are the same) but does matter on portable where we use an output filter to translate os-specific tun/tap headers Upstream-ID: f1ca94eff48404827b12e1d12f6139ee99a72284
2017-09-24upstream commitdjm@openbsd.org
fix tunnel forwarding problem introduced in refactor; reported by stsp@ ok markus@ Upstream-ID: 81a731cdae1122c8522134095d1a8b60fa9dcd04
2017-09-22upstream commitmarkus@openbsd.org
Add 'reverse' dynamic forwarding which combines dynamic forwarding (-D) with remote forwarding (-R) where the remote-forwarded port expects SOCKS-requests. The SSH server code is unchanged and the parsing happens at the SSH clients side. Thus the full SOCKS-request is sent over the forwarded channel and the client parses c->output. Parsing happens in channel_before_prepare_select(), _before_ the select bitmask is computed in the pre[] handlers, but after network input processing in the post[] handlers. help and ok djm@ Upstream-ID: aa25a6a3851064f34fe719e0bf15656ad5a64b89
2017-09-22upstream commitmillert@openbsd.org
Use explicit_bzero() instead of bzero() before free() to prevent the compiler from optimizing away the bzero() call. OK djm@ Upstream-ID: cdc6197e64c9684c7250e23d60863ee1b53cef1d
2017-09-12upstream commitdjm@openbsd.org
unused variable Upstream-ID: 2f9ba09f2708993d35eac5aa71df910dcc52bac1
2017-09-12upstream commitdjm@openbsd.org
fix tun/tap forwarding case in previous Upstream-ID: 43ebe37a930320e24bca6900dccc39857840bc53
2017-09-12upstream commitdjm@openbsd.org
Make remote channel ID a u_int Previously we tracked the remote channel IDs in an int, but this is strictly incorrect: the wire protocol uses uint32 and there is nothing in-principle stopping a SSH implementation from sending, say, 0xffff0000. In practice everyone numbers their channels sequentially, so this has never been a problem. ok markus@ Upstream-ID: b9f4cd3dc53155b4a5c995c0adba7da760d03e73
2017-09-12upstream commitdjm@openbsd.org
refactor channels.c Move static state to a "struct ssh_channels" that is allocated at runtime and tracked as a member of struct ssh. Explicitly pass "struct ssh" to all channels functions. Replace use of the legacy packet APIs in channels.c. Rework sshd_config PermitOpen handling: previously the configuration parser would call directly into the channels layer. After the refactor this is not possible, as the channels structures are allocated at connection time and aren't available when the configuration is parsed. The server config parser now tracks PermitOpen itself and explicitly configures the channels code later. ok markus@ Upstream-ID: 11828f161656b965cc306576422613614bea2d8f
2017-09-04upstream commitdjm@openbsd.org
pass packet state down to some of the channels function (more to come...); ok markus@ Upstream-ID: d8ce7a94f4059d7ac1e01fb0eb01de0c4b36c81b
2017-06-01upstream commitderaadt@openbsd.org
These shutdown() SHUT_RDWR are not needed before close() ok djm markus claudio Upstream-ID: 36f13ae4ba10f5618cb9347933101eb4a98dbcb5
2017-05-31upstream commitdjm@openbsd.org
fix possible OOB strlen() in SOCKS4A hostname parsing; ok markus@ Upstream-ID: c67297cbeb0e5a19d81752aa18ec44d31270cd11
2017-05-31upstream commitmarkus@openbsd.org
protocol handlers all get struct ssh passed; ok djm@ Upstream-ID: 0ca9ea2a5d01a6d2ded94c5024456a930c5bfb5d
2017-05-31upstream commitmarkus@openbsd.org
remove ssh1 references; ok djm@ Upstream-ID: fc23b7578e7b0a8daaec72946d7f5e58ffff5a3d
2017-05-27upstream commitmarkus@openbsd.org
remove SSH_CHANNEL_XXX_DRAINING (ssh1 only); ok djm@ Upstream-ID: e2e225b6ac67b84dd024f38819afff2554fafe42
2017-05-27upstream commitmarkus@openbsd.org
remove channel_input_close_confirmation (ssh1 only); ok djm@ Upstream-ID: 8e7c8c38f322d255bb0294a5c0ebef53fdf576f1
2017-05-01upstream commitdjm@openbsd.org
obliterate ssh1.h and some dead code that used it ok markus@ Upstream-ID: 1ca9159a9fb95618f9d51e069ac8e1131a087343
2017-05-01upstream commitdjm@openbsd.org
remove compat20/compat13/compat15 variables ok markus@ Upstream-ID: 43802c035ceb3fef6c50c400e4ecabf12354691c
2017-03-10If OSX is using launchd, remove screen no.Darren Tucker
Check for socket with and without screen number. From Apple and Jakob Schlyter via bz#2341, with contributions from Ron Frederick, ok djm@
2017-02-03upstream commitdtucker@openbsd.org
Return true reason for port forwarding failures where feasible rather than always "administratively prohibited". bz#2674, ok djm@ Upstream-ID: d901d9887951774e604ca970e1827afaaef9e419
2016-10-19upstream commitdtucker@openbsd.org
Remove channel_input_port_forward_request(); the only caller was the recently-removed SSH1 server code so it's now dead code. ok markus@ Upstream-ID: 05453983230a1f439562535fec2818f63f297af9
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