Commit Graph

1749 Commits

Author SHA1 Message Date
Andreas Schneider
8daf03c564 session: Check the session timeout and use it if set
This checks if a timeout has been set using ssh_options_set(). If it has
been set it will use that parameter by default for blocking reads.

This is at least what users are expecting.

Fixes T33

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
2018-12-07 18:09:27 +01:00
Andreas Schneider
8ece2abfab session: Use long for the timeout
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2018-12-07 17:49:17 +01:00
Anderson Toshiyuki Sasaki
f05717d23e sftp: Add NULL check in sftp_fstat()
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
2018-12-07 17:47:22 +01:00
Anderson Toshiyuki Sasaki
eaa97d2062 sftp: Add NULL check in sftp_xstat()
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-12-07 17:47:18 +01:00
Anderson Toshiyuki Sasaki
bda2cc69af sftp: Add NULL check in sftp_opendir()
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-12-07 17:47:11 +01:00
Anderson Toshiyuki Sasaki
83d827d7dd sftp: Set sftp error when received unexpected message
Set sftp error to SSH_FX_BAD_MESSAGE if an unexpected message is
received.

Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-12-07 17:47:00 +01:00
Anderson Toshiyuki Sasaki
0f95295966 sftp: Set sftp error code when fail occurs
When an operation fails in sftp subsystem, set the sftp error, so that
it can be obtained by sftp_get_error().

Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-12-07 17:44:52 +01:00
Anderson Toshiyuki Sasaki
8e69d435ef channels: Set error state when closed channel is read
When an attempt to read a closed channel happens, set the session error
state properly.

Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-12-07 17:44:46 +01:00
Anderson Toshiyuki Sasaki
d78a29eb79 sftp: Set error when EOF is received in sftp_packet_read()
When reading a sftp packet and an EOF is received before all requested
bytes are read, set the session and sftp error codes.

Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-12-07 17:43:08 +01:00
Andreas Schneider
58113d489e connect: Fix size type for i an j in ssh_select()
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2018-12-07 14:08:31 +01:00
Andreas Schneider
c306a693f3 buffer: Use size_t for argc argument in ssh_buffer_(un)pack()
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2018-12-07 14:08:31 +01:00
Jakub Jelen
21e2522360 config: Get rid of the dynamic seen array
* This makes the array constant in the session structure, avoiding
   allocations and frees while parsing the file
 * It also drops passing the seen array to all the functions,
   because it is already part of the passed session
 * The test cases are adjusted to match these changes

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-12-07 14:08:27 +01:00
Jakub Jelen
8f887e82c7 config: Reformat local_parse_file
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-12-07 14:07:31 +01:00
Jakub Jelen
993e24a361 config: Reformat ssh_config_parse_file
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-12-07 14:07:31 +01:00
Andreas Schneider
3784226fd8 sftp: Do not overwrite errors set by channel functions
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 18:52:40 +01:00
Andreas Schneider
cf24048f02 libcrypto: Fix integer comparison in evp_cipher_aead_encrypt()
src/libcrypto.c:773:27: warning: comparison of integer expressions of
different signedness: ‘int’ and ‘size_t’ {aka ‘long unsigned int’}
[-Wsign-compare] <--[cc]
     if (rc != 1 || outlen != len - aadlen) {
                           ^~
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 18:47:25 +01:00
Anderson Toshiyuki Sasaki
41b0d263d6 libcrypto: Fix access violation in ssh_init()
This fixes an access violation when ssh_init() was called after
ssh_finalize() in Windows when using OpenSSL 1.0.2 and libssh statically
linked.

Fixes T120

Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 18:26:55 +01:00
Andreas Schneider
c0ae59e102 bignum: Use UNUSED macros 2018-11-30 18:25:12 +01:00
Andreas Schneider
109a203453 include: Add macro for unused arguments and variables
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 18:25:12 +01:00
Andreas Schneider
ac8b954019 bignum: Use size_t in ssh_make_string_bn*
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 18:25:12 +01:00
Andreas Schneider
c6ca62d7e1 crypto: Use size_t for len argument in encrypt and decrpyt fn
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 18:25:12 +01:00
Tilo Eckert
95f83c2391 src: Fix multiple typos
Signed-off-by: Tilo Eckert <tilo.eckert@flam.de>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 16:29:17 +01:00
Jakub Jelen
b72c9eead6 pki: Sanitize input to verification
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 16:26:07 +01:00
Jakub Jelen
c7628fbfea pki: Return default RSA key type for DIGEST_AUTO
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 16:24:21 +01:00
Jakub Jelen
783e5fd206 pki: Verify the provided public key has expected type
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 16:24:14 +01:00
Jakub Jelen
c79c33e224 pki: Sanity-check signature matches base key type
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 16:22:51 +01:00
Jakub Jelen
bc91fa98ea packet_cb: Properly verify the signature type
Issue reported by Tilo Eckert <tilo.eckert@flam.de>

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 16:21:52 +01:00
Jakub Jelen
d2434c69c0 pki: Separate signature extraction and verification
Initial solution proposed by Tilo Eckert <tilo.eckert@flam.de>

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 16:21:18 +01:00
Jakub Jelen
7f83a1efae pki: Set correct type for imported signatures
Issue reported by Tilo Eckert <tilo.eckert@flam.de>

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 16:20:19 +01:00
Jakub Jelen
7b725e6bc7 pki: Use self-explanatory variable names
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 16:20:10 +01:00
Jakub Jelen
46d8840f7e The largest ECDSA key has 521 bits
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 16:20:04 +01:00
Jakub Jelen
c1fdb56d23 pki_gcrypt: Do not abort on bad signature
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-30 16:19:59 +01:00
Jakub Jelen
57bdc9cb20 Whitespace cleanup
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-29 14:22:08 +01:00
Jakub Jelen
e639c9d0d8 kex,packet,packet_cb: Reformat
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-23 17:30:16 +01:00
Jakub Jelen
bf2c7128ab server: Do not send SSH_MSG_EXT_INFO after rekey
This should not be a problem for well-behaving clients that do not
append the ext-info-c to the rekey, but if they do, we should not
send it either.

Resolves: T121

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-23 17:30:16 +01:00
Jakub Jelen
83f2ac4abb kex: Do not negotiate extensions during rekey
The RFC 8308 clearly says, that the additional  ext-info-c  should
be added only to the first SSH_MSG_KEXINIT.

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-23 17:30:16 +01:00
Jakub Jelen
0b4c2a8e62 session: Reformat ssh_{set,is}_blocking
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-23 17:30:16 +01:00
Jakub Jelen
5bdb7a5079 crypto: Avoid unused parameter warnings
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-23 17:30:16 +01:00
Jakub Jelen
824c56067b config: Drop bogus newline in log
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-23 17:30:16 +01:00
Jakub Jelen
3da5fcbb56 options: Do not crash when setting knownhosts to NULL (T108)
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-23 17:30:16 +01:00
Andreas Schneider
21881cde34 libcrypto: Fix checking for config.h defines
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-21 18:17:56 +01:00
Aris Adamantiadis
55252e4d70 libcrypto: disable AES-NI engine when running inside valgrind
Valgrind detects many uninitialized memory false positives from
libcrypto's AES-NI internals. Roll back to software AES when running
tests.

Signed-off-by: Aris Adamantiadis <aris@0xbadc0de.be>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-21 16:54:36 +01:00
Aris Adamantiadis
f4339df577 packets: allow removal of callbacks
Signed-off-by: Aris Adamantiadis <aris@0xbadc0de.be>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-21 16:54:20 +01:00
Aris Adamantiadis
0197e5e1e5 libcrypto: detect non matching headers/shared lib
Signed-off-by: Aris Adamantiadis <aris@0xbadc0de.be>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-21 16:54:15 +01:00
Aris Adamantiadis
9546b20dec gcrypt: Bugfix for very slow ecdh
Signed-off-by: Aris Adamantiadis <aris@0xbadc0de.be>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-21 16:53:40 +01:00
Tilo Eckert
b227c12ad2 socket: Add missing braces
Signed-off-by: Tilo Eckert <tilo.eckert@flam.de>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-21 12:25:50 +01:00
Tilo Eckert
f369d02932 socket: Remove redundant code
Signed-off-by: Tilo Eckert <tilo.eckert@flam.de>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-20 07:59:32 +01:00
Tilo Eckert
0b9e07fbdc socket: Fix potential buffer overrun
If nread is < 0 and no exception callback is set,
the following code block would cause a buffer overrun.

Signed-off-by: Tilo Eckert <tilo.eckert@flam.de>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-20 07:58:08 +01:00
Tilo Eckert
c47cdc0f97 pki: Fix typos in documentation
Signed-off-by: Tilo Eckert <tilo.eckert@flam.de>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-20 07:57:33 +01:00
Tilo Eckert
4b6eb05023 packet: Fix timeout on hostkey type mismatch instead of proper error
If the hostkey type was not in the list of acceptable hostkey
types, the function failed to set the error state. Due to the
fact that the calling function ssh_packet_process() does not
handle the SSH_ERROR return code, the newkeys packet from the
server was silently ignored, stalling the connection until a
timeout occurred.

Signed-off-by: Tilo Eckert <tilo.eckert@flam.de>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-11-20 07:56:04 +01:00