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refactor canohost.c: move functions that cache results closer
to the places that use them (authn and session code). After this, no state is
cached in canohost.c
feedback and ok markus@
Upstream-ID: 5f2e4df88d4803fc8ec59ec53629105e23ce625e
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refactor activation of rekeying
This makes automatic rekeying internal to the packet code (previously
the server and client loops needed to assist). In doing to it makes
application of rekey limits more accurate by accounting for packets
about to be sent as well as packets queued during rekeying events
themselves.
Based on a patch from dtucker@ which was in turn based on a patch
Aleksander Adamowski in bz#2521; ok markus@
Upstream-ID: a441227fd64f9739850ca97b4cf794202860fcd8
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Allow RekeyLimits in excess of 4G up to 2**63 bits
(limited by the return type of scan_scaled). Part of bz#2521, ok djm.
Upstream-ID: 13bea82be566b9704821b1ea05bf7804335c7979
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remove roaming support; ok djm@
Upstream-ID: 2cab8f4b197bc95776fb1c8dc2859dad0c64dc56
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include remote port number in a few more messages; makes
tying log messages together into a session a bit easier; bz#2503 ok dtucker@
Upstream-ID: 9300dc354015f7a7368d94a8ff4a4266a69d237e
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a88dd1da119052870bb2654c1a32c51971eade16
(some systems have sig_atomic_t in signal.h, some in sys/signal.h)
Sounds good to me djm@
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spotted by Tom Christensen
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avoid more fatal/exit in the packet.c paths that
ssh-keyscan uses; feedback and "looks good" markus@
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avoid fatal() calls in packet code makes ssh-keyscan more
reliable against server failures ok dtucker@ markus@
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add experimental api for packet layer; ok djm@
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move dispatch to struct ssh; ok djm@
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update packet.c & isolate, introduce struct ssh a) switch
packet.c to buffer api and isolate per-connection info into struct ssh b)
(de)serialization of the state is moved from monitor to packet.c c) the old
packet.c API is implemented in opacket.[ch] d) compress.c/h is removed and
integrated into packet.c with and ok djm@
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[monitor.c packet.c packet.h]
unbreak compression, by re-init-ing the compression code in the
post-auth child. the new buffer code is more strict, and requires
buffer_init() while the old code was happy after a bzero();
originally from djm@
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[authfile.c bufaux.c buffer.h channels.c krl.c mux.c packet.c packet.h]
[ssh-keygen.c]
buffer_get_string_ptr's return should be const to remind
callers that futzing with it will futz with the actual buffer
contents
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[auth-options.c auth-rsa.c bufaux.c buffer.h channels.c hostfile.c]
[hostfile.h mux.c packet.c packet.h roaming_common.c serverloop.c]
fix pointer-signedness warnings from clang/llvm-3.3; "seems nice" deraadt@
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[ssh_config sshconnect2.c packet.c readconf.h readconf.c clientloop.c
ssh_config.5 packet.h]
Add an optional second argument to RekeyLimit in the client to allow
rekeying based on elapsed time in addition to amount of traffic.
with djm@ jmc@, ok djm
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[packet.c packet.h]
packet_read_poll() is not used anymore.
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[packet.c packet.h]
set traffic class for IPv6 traffic as we do for IPv4 TOS;
patch from lionel AT mamane.lu via Colin Watson in bz#1855;
ok markus@
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[clientloop.c misc.c misc.h packet.c packet.h readconf.c readconf.h]
[servconf.c servconf.h session.c ssh.c ssh_config.5 sshd_config.5]
allow ssh and sshd to set arbitrary TOS/DSCP/QoS values instead of
hardcoding lowdelay/throughput.
bz#1733 patch from philipp AT redfish-solutions.com; ok markus@ deraadt@
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for missing headers and compiler warnings.
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[PROTOCOL PROTOCOL.agent PROTOCOL.certkeys auth2-jpake.c authfd.c]
[authfile.c buffer.h dns.c kex.c kex.h key.c key.h monitor.c]
[monitor_wrap.c myproposal.h packet.c packet.h pathnames.h readconf.c]
[ssh-add.1 ssh-add.c ssh-agent.1 ssh-agent.c ssh-keygen.1 ssh-keygen.c]
[ssh-keyscan.1 ssh-keyscan.c ssh-keysign.8 ssh.1 ssh.c ssh2.h]
[ssh_config.5 sshconnect.c sshconnect2.c sshd.8 sshd.c sshd_config.5]
[uuencode.c uuencode.h bufec.c kexecdh.c kexecdhc.c kexecdhs.c ssh-ecdsa.c]
Implement Elliptic Curve Cryptography modes for key exchange (ECDH) and
host/user keys (ECDSA) as specified by RFC5656. ECDH and ECDSA offer
better performance than plain DH and DSA at the same equivalent symmetric
key length, as well as much shorter keys.
Only the mandatory sections of RFC5656 are implemented, specifically the
three REQUIRED curves nistp256, nistp384 and nistp521 and only ECDH and
ECDSA. Point compression (optional in RFC5656 is NOT implemented).
Certificate host and user keys using the new ECDSA key types are supported.
Note that this code has not been tested for interoperability and may be
subject to change.
feedback and ok markus@
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[auth-options.c auth1.c auth2.c bufaux.c buffer.h kex.c key.c packet.c]
[packet.h ssh-dss.c ssh-rsa.c]
Add buffer_get_cstring() and related functions that verify that the
string extracted from the buffer contains no embedded \0 characters*
This prevents random (possibly malicious) crap from being appended to
strings where it would not be noticed if the string is used with
a string(3) function.
Use the new API in a few sensitive places.
* actually, we allow a single one at the end of the string for now because
we don't know how many deployed implementations get this wrong, but don't
count on this to remain indefinitely.
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[packet.h packet.c]
packet_bacup_state() and packet_restore_state() will be used to
temporarily save the current state ren resuming a suspended connection.
ok markus@
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[sshconnect.h sshconnect.c]
Un-static ssh_exchange_identification(), part of a larger change from
Martin Forssen and needed for upcoming changes.
ok markus@
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[canohost.h canohost.c]
Add clear_cached_addr(), needed for upcoming changes allowing the peer
address to change.
ok markus@
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[clientloop.c monitor.c monitor_wrap.c packet.c packet.h sshd.c]
sync v1 and v2 traffic accounting; add it to sshd, too;
ok djm@, dtucker@
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[sshd.c sshconnect.c packet.h misc.c misc.h packet.c]
Make keepalive timeouts apply while waiting for a packet, particularly
during key renegotiation (bz #1363). With djm and Matt Day, ok djm@
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[bufaux.c buffer.h channels.c packet.c packet.h]
avoid extra malloc/copy/free when receiving data over the net;
~10% speedup for localhost-scp; ok djm@
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[clientloop.c packet.c packet.h serverloop.c]
Allow all SSH2 packet types, including UNIMPLEMENTED to reset the
keepalive timer (bz #1307). ok markus@
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[atomicio.h auth-options.h auth.h auth2-gss.c authfd.h authfile.h]
[bufaux.h buffer.h canohost.h channels.h cipher.h clientloop.h]
[compat.h compress.h crc32.c crc32.h deattack.h dh.h dispatch.h]
[dns.c dns.h getput.h groupaccess.h gss-genr.c gss-serv-krb5.c]
[gss-serv.c hostfile.h includes.h kex.h key.h log.h mac.h match.h]
[misc.h monitor.h monitor_fdpass.h monitor_mm.h monitor_wrap.h msg.h]
[myproposal.h packet.h pathnames.h progressmeter.h readconf.h rsa.h]
[scard.h servconf.h serverloop.h session.h sftp-common.h sftp.h]
[ssh-gss.h ssh.h ssh1.h ssh2.h sshconnect.h sshlogin.h sshpty.h]
[ttymodes.h uidswap.h uuencode.h xmalloc.h]
standardise spacing in $OpenBSD$ tags; requested by deraadt@
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[channels.c clientloop.c clientloop.h includes.h packet.h]
[serverloop.c sshpty.c sshpty.h sshtty.c ttymodes.c]
move #include <termios.h> out of includes.h; ok markus@
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[kex.c kex.h myproposal.h packet.c packet.h servconf.c session.c]
[sshconnect2.c sshd.c sshd_config sshd_config.5]
add a new compression method that delays compression until the user
has been authenticated successfully and set compression to 'delayed'
for sshd.
this breaks older openssh clients (< 3.5) if they insist on
compression, so you have to re-enable compression in sshd_config.
ok djm@
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[auth-rsa.c auth.c auth1.c auth2-chall.c auth2-gss.c authfd.c authfile.c]
[bufaux.c canohost.c channels.c cipher.c clientloop.c dns.c gss-serv.c]
[kex.c kex.h key.c mac.c match.c misc.c packet.c packet.h scp.c]
[servconf.c session.c session.h sftp-client.c sftp-server.c sftp.c]
[ssh-keyscan.c ssh-rsa.c sshconnect.c sshconnect1.c sshconnect2.c sshd.c]
make this -Wsign-compare clean; ok avsm@ markus@
NB. auth1.c changes not committed yet (conflicts with uncommitted sync)
NB2. more work may be needed to make portable Wsign-compare clean
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[auth.c auth2-none.c authfile.c channels.c monitor.c monitor_mm.c
packet.c packet.h progressmeter.c session.c openbsd-compat/xmmap.c]
improve some code lint did not like; djm millert ok
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[auth2-hostbased.c auth2-pubkey.c auth2.c channels.c key.c key.h
monitor.c packet.c packet.h serverloop.c sshconnect2.c sshd.c]
int -> u_int; ok djm@, deraadt@, mouring@
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- markus@cvs.openbsd.org 2003/04/02 09:48:07
[clientloop.c monitor.c monitor_wrap.c packet.c packet.h readconf.c]
[readconf.h serverloop.c sshconnect2.c]
reapply rekeying chage, tested by henning@, ok djm@
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[clientloop.c monitor.c monitor_wrap.c packet.c packet.h readconf.c]
[readconf.h serverloop.c sshconnect2.c]
rekeying bugfixes and automatic rekeying:
* both client and server rekey _automatically_
(a) after 2^31 packets, because after 2^32 packets
the sequence number for packets wraps
(b) after 2^(blocksize_in_bits/4) blocks
(see: draft-ietf-secsh-newmodes-00.txt)
(a) and (b) are _enabled_ by default, and only disabled for known
openssh versions, that don't support rekeying properly.
* client option 'RekeyLimit'
* do not reply to requests during rekeying
- markus@cvs.openbsd.org 2003/04/01 10:22:21
[clientloop.c monitor.c monitor_wrap.c packet.c packet.h readconf.c]
[readconf.h serverloop.c sshconnect2.c]
backout rekeying changes (for 3.6.1)
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[cipher.c monitor.c monitor_wrap.c packet.c packet.h]
make the monitor sync the transfer ssh1 session key;
transfer keycontext only for RC4 (this is still depends on EVP
implementation details and is broken).
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[packet.c packet.h]
export/import cipher state, iv and ssh2 seqnr; needed by ssh-privsep
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revert
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PAM, Cygwin and OSF SIA will not work for sure
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[auth-krb5.c auth-options.h auth.h authfd.h authfile.h bufaux.h buffer.h
channels.h cipher.h compat.h compress.h crc32.h deattack.c getput.h
groupaccess.c misc.c mpaux.h packet.h readconf.h rsa.h scard.h
servconf.h ssh-agent.c ssh.h ssh2.h sshpty.h sshtty.c ttymodes.h
uuencode.c xmalloc.h]
$OpenBSD$ and RCSID() cleanup: don't use RCSID() in .h files; add
missing RCSID() to .c files and remove dup /*$OpenBSD$*/ from .c
files. ok markus@
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[auth1.c auth-rsa.c channels.c dispatch.c kex.c kexdh.c kexgex.c packet.c packet.h serverloop.c session.c ssh.c sshconnect1.c sshconnect2.c sshd.c]
packet_read* no longer return the packet length, since it's not used.
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[auth1.c kexdh.c kexgex.c packet.c packet.h sshconnect1.c sshd.c]
packet_get_bignum* no longer returns a size
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[auth1.c auth-rsa.c channels.c clientloop.c packet.c packet.h serverloop.c session.c ssh.c sshconnect1.c sshd.c ttymodes.c]
get rid of packet_integrity_check, use packet_done() instead.
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[auth1.c auth-rsa.c channels.c clientloop.c packet.c packet.h serverloop.c session.c ssh.c sshconnect1.c sshd.c ttymodes.c]
get rid of packet_integrity_check, use packet_done() instead.
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[auth2.c auth2-chall.c channels.c channels.h clientloop.c dispatch.c]
[dispatch.h kex.c kex.h packet.c packet.h serverloop.c ssh.c]
[sshconnect2.c]
Conformance fix: we should send failing packet sequence number when
responding with a SSH_MSG_UNIMPLEMENTED message. Spotted by
yakk@yakk.dot.net; ok markus@
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