Stream_Seek() is used, but consequently Stream_SetPosition() is used
for position obtained by Stream_GetPosition() immediatelly before
Stream_Seek(). Let's remove this stream position changes due to its
redundancy.
p is 20 and r is 1 in the last iteration of fips_expand_key_bits,
which means that buf[21] is read (of BYTE buf[21];). However,
the value is not needed, because it is consequently discarded by
"c & 0xfe" statement. Let's do not read buf[p + 1] when r is 1
to avoid this.
Previously, the code prompted for the password even if a RedirectionPassword
was provided.
With this change the prompt is only shown if both settins->Password and
settings->RedirectionPassword is absent.
FreeRDP aborts if OpenSSL operates in FIPS mode and +fipsmode is not
manually specified. Let's prevent the abortion and enable the necessary
options in that case automatically.
This option will ensure that NLA is disabled(since NTLM uses weak crypto algorithms), FIPS
encryption is enabled, and ensure fips mode is enabled for openssl.
Selectively override specific uses of MD5/RC4 with new API calls specifically tailored to override FIPS.
Add comments on why overriding the use of these algorithms under FIPS is acceptable for the locations where overrides happen.
Remove check of server proprietary certificate which was already being ignore to avoid use of MD5.
Initialize winpr openssl earlier to ensure fips mode is set before starting using any crypto algorithms.
According to MS-RDPBCGR the server might send a password in the Redirection PDU
that then must be sent by the client to the server as password.
Since the field either contains a password string (unicode) or a binary cookie,
we try to convert the password from unicode and use it only if conversion
succeeds.
The listener server socket file needs to be deleted before we bind it
otherwise it's an "address already in use" error. But it was getting
deleted after the bind, causing the file to disappear, and preventing
anyone from connecting to the listener socket since the socket stops
existing.
This is caused by commit 884e87fde4
When unlinking the file before binding, a new entry is created
in the file system after binding. This is not desireable, so
unlink it after binding to remove the temporary file after the process
closes.
The size of OFFSCREEN_DELETE_LIST list allocation was incorrectly changed
by commit 99b1481 and consequently fixed incorrectly by commit 8a0fe086.
Let's count the allocation size based on new size and not based on current
size in order to prevent some memory issues.
https://github.com/FreeRDP/FreeRDP/issues/4117
If numWindowRects/numVisibilityRects is zero a realloc might either
return NULL or a free able memory. In the first case the introduced
regression caused a double free.
As 0 is a possible value that can be received in both cases rail was
broken.
Fixes#4022
Adds a callback that allows servers to compute NTLM hashes by themselves. The typical
use of this callback is to provide a function that gives precomputed hash values.
Sponsored by: Wheel Systems (http://www.wheelsystems.com)
Fix error define use. The callback is called from
ssl3_dispatch_alert or dtls1_dispatch_alert where the alert define
is left shifted by 8. Additionally ignore close notifcation. (#3814)
This callback is called when the client capabilities have been received. This callback
appears to be more useful than the Capabilities one that is called just before the server
sends its capabilities.
Dropped some warning that were caused by the DEBUG_CAPABILTIES define.
Also adjusted some lines that were quite ugly after the automatic truncation
to 80 characters.
[channels/tsmf/client/gstreamer/tsmf_X11.c:317] -> [channels/tsmf/client/gstreamer/tsmf_X11.c:322]: (warning) Either the condition '!decoder' is redundant or there is possible null pointer dereference: decoder.
[channels/tsmf/client/gstreamer/tsmf_X11.c:470] -> [channels/tsmf/client/gstreamer/tsmf_X11.c:475]: (warning) Either the condition '!decoder' is redundant or there is possible null pointer dereference: decoder.
[channels/tsmf/client/gstreamer/tsmf_X11.c:472] -> [channels/tsmf/client/gstreamer/tsmf_X11.c:475]: (warning) Either the condition '!decoder' is redundant or there is possible null pointer dereference: decoder.
[channels/tsmf/client/tsmf_media.c:179] -> [channels/tsmf/client/tsmf_media.c:181]: (warning) Either the condition '!stream' is redundant or there is possible null pointer dereference: stream.
[client/Windows/wf_cliprdr.c:2219] -> [client/Windows/wf_cliprdr.c:2222]: (warning) Either the condition '!formatDataResponse' is redundant or there is possible null pointer dereference: formatDataResponse
[client/Windows/wf_cliprdr.c:2445] -> [client/Windows/wf_cliprdr.c:2448]: (warning) Either the condition '!fileContentsResponse' is redundant or there is possible null pointer dereference: fileContentsResponse.
[client/X11/xf_cliprdr.c:911] -> [client/X11/xf_cliprdr.c:913]: (warning) Either the condition '!clipboard' is redundant or there is possible null pointer dereference: clipboard.
[client/X11/xf_graphics.c:504] -> [client/X11/xf_graphics.c:506]: (warning) Either the condition '!xfc' is redundant or there is possible null pointer dereference: xfc.
[libfreerdp/core/transport.c:861] -> [libfreerdp/core/transport.c:863]: (warning) Either the condition '!transport' is redundant or there is possible null pointer dereference: transport.
[server/shadow/shadow_server.c:777] -> [server/shadow/shadow_server.c:791]: (warning) Either the condition '!server' is redundant or there is possible null pointer dereference: server.
[server/shadow/shadow_server.c:778] -> [server/shadow/shadow_server.c:791]: (warning) Either the condition '!server' is redundant or there is possible null pointer dereference: server.
[server/shadow/shadow_server.c:779] -> [server/shadow/shadow_server.c:791]: (warning) Either the condition '!server' is redundant or there is possible null pointer dereference: server.
[server/shadow/shadow_server.c:781] -> [server/shadow/shadow_server.c:791]: (warning) Either the condition '!server' is redundant or there is possible null pointer dereference: server.
[server/shadow/shadow_server.c:782] -> [server/shadow/shadow_server.c:791]: (warning) Either the condition '!server' is redundant or there is possible null pointer dereference: server.
[server/shadow/shadow_server.c:783] -> [server/shadow/shadow_server.c:791]: (warning) Either the condition '!server' is redundant or there is possible null pointer dereference: server.
[server/shadow/shadow_server.c:784] -> [server/shadow/shadow_server.c:791]: (warning) Either the condition '!server' is redundant or there is possible null pointer dereference: server.
[server/shadow/shadow_server.c:785] -> [server/shadow/shadow_server.c:791]: (warning) Either the condition '!server' is redundant or there is possible null pointer dereference: server.
[server/shadow/shadow_server.c:787] -> [server/shadow/shadow_server.c:791]: (warning) Either the condition '!server' is redundant or there is possible null pointer dereference: server.
[server/shadow/shadow_server.c:789] -> [server/shadow/shadow_server.c:791]: (warning) Either the condition '!server' is redundant or there is possible null pointer dereference: server.
FreeRDP calculates default request size in server mode based upon
the desktop resolution. In practice, however, I've found clients (namely
MS Lync 2013) which would show only a black screen when the value is
greater than 0x3EFFFF.
This change allows to override the default in such special cases by
assigning a different value to server->settings->MultifragMaxRequestSize
after the shadow server structure is initialized in shadow_server_new().
Channels with regular and extended interface need to live in the same
handle name space otherwise they can't be uniquely identified in the
global channel manager.
SSL functions like OpenSSL_add_all_digests should be invoked at very beginning as they are not MT safe.
If not we might meet double free exception as following:
#0 0x00007f23ddd71c37 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007f23ddd75028 in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2 0x00007f23dddae2a4 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#3 0x00007f23dddba55e in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#4 0x00007f23dc6ecfcd in CRYPTO_free () from /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
#5 0x00007f23dc6ef8d1 in OBJ_NAME_add () from /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
#6 0x00007f23dc77dcd8 in EVP_add_digest () from /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
#7 0x00007f23dc782321 in OpenSSL_add_all_digests () from /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
#8 0x00007f23c781da28 in winpr_openssl_get_evp_md (md=4) at /home/zihao/workspace/zihao_FreeRDP/winpr/libwinpr/crypto/hash.c:52
#9 0x00007f23c781dccb in winpr_Digest_Init (ctx=0x7f22d064d470, md=<optimized out>) at /home/zihao/workspace/zihao_FreeRDP/winpr/libwinpr/crypto/hash.c:344
#10 0x00007f23d486139b in security_salted_mac_signature (rdp=0x7f23859f5a20, data=0x7f238542d4fb "\004\204\022\004", length=4743, encryption=<optimized out>, output=0x7
at /home/zihao/workspace/zihao_FreeRDP/libfreerdp/core/security.c:378
#11 0x00007f23d488d73f in fastpath_send_update_pdu (fastpath=<optimized out>, updateCode=4 '\004', s=0x7f23859f5f40, skipCompression=true)
at /home/zihao/workspace/zihao_FreeRDP/libfreerdp/core/fastpath.c:1076
#12 0x00007f23d4891c4f in update_send_surface_frame_bits (context=0x7f23859f5540, cmd=0x7f22b2ffcc80, first=true, last=true, frameId=6)
at /home/zihao/workspace/zihao_FreeRDP/libfreerdp/core/update.c:1041
Related reports: https://rt.openssl.org/Ticket/Display.html?id=2216&user=guest&pass=guest
- fixed invalid, missing or additional arguments
- removed all type casts from arguments
- added missing (void*) typecasts for %p arguments
- use inttypes defines where appropriate
- winpr_HMAC_New() now just returnes the opaque WINPR_HMAC_CTX* pointer
which has to be passed to winpr_HMAC_Init() for (re)initialization
and since winpr_HMAC_Final() no more frees the context you always have to
use the new function winpr_HMAC_Free() once winpr_HMAC_New() has succeded
- winpr_Digest_New() now just returns the opaque WINPR_DIGEST_CTX* pointer
which has to be passed to winpr_Digest_Init() for (re)initialization
and since winpr_Digest_Final() no more frees the context you always have to
use the new function winpr_Digest_Free() once winpr_Digest_New() has succeded
This patch make it possible to limit the time that is passed when we call
XXX_check_fds functions. This should smooth the treatment between handling inputs
and handling incoming bitmap updates.
The default maximum time is set to 100 ms.
iOS does not support Thread Local Storage.
Disabling it for now until a solution is found.
Print a compiler warning informing developers about this issue.
CMake 2.8 does not support default visibility on windows.
To allow building tests add the FREERDP_LOCAL define for each
function that is internal to FreeRDP.
When build with testing these functions are exported and available
for use by tests.
Global static variables do not work, if more than one instance
of an RDP client is running in the same process space.
Removed the varaibles where possible and replaced them with
thread local storage where necessary.
Shadow server crash with rdp8.0 with gfx enabled.
Root Cause: rdp8.0 is not support in shadow gfx and rdpgfx_caps_advertise returns an error. However setChannelError crashs because context->errorDescription is NULL
1. Fix shadow gfx to handle rdp8.0
2. Initialize context->errorDescription for server side new-context
transport_write did not check if transport or bio are
set. The transport read checks it. In using fastpath
and for example a mouse input is sent, the transport
is never checked and can cause a segfault.
1. Fix stream leak in rdpgfx
2. Make src data const in zgfx. Harden zgfx to be independent to byte order
3. Fix written bytes return value in channel write
4. Add check for return value in shadow_client.c
5. Add gfx callback to send surface command with frame marker pdu.
6. Check remain length for recv subroutine
7. Fix compile errors
According to [MS-RDPBCGR 2.2.1.3.4.1 Channel Definition Structure]
the channel name must be an 8-byte array containing a null-terminated
collection of seven ANSI characters that uniquely identify the channel.
We did not check if the transmitted name was null-terminated which
could have the usual severe effects on stabiliy and security since
the channel name is used in several functions expecting a null-
terminated string (strlen, printf, etc.)
Details: cbSecurityTrailer was assumed to be a fixed length for all signatures, however for Kerberos authentication the signature may generate smaller than this value
If support for multi layout PDUs is advertised there are known issues
with Windows 7 and Windows 2008R2. Until those are resolved generally
disable multi layout PDUs.
See #3114 for details.
According to [MS-RDPBCGR 2.2.1.11.1.1.1] the TS_EXTENDED_INFO_PACKET
structure's cbClientAddress field must include the _mandatory_ NULL
terminator of the clientAddress field in its byte count.
However, connections proxied via Microsoft's TS Gateway set the
cbClientDir value to 0.
According to [MS-RDPBCGR 2.2.1.11.1.1.1] the TS_EXTENDED_INFO_PACKET
structure's cbClientDir field must include the _mandatory_ NULL
terminator of the ClientDir field.
However, since version 8.1.31.44, the Microsoft Remote Desktop Client
for Android sets cbClientDir to 0.
If a target is linked against libraries with cmake
(target_link_libraries) and the libraries are not marked as PRIVATE
they are "exported" and in case a other target is linked against this
target it is also linked against *all* (not private) libraries.
Without declaring private libraries PRIVATE a lot of over linking
(linking against unneeded libraries) was done.
since there have been reports that certain windows versions send
zero values in the cbDomain field of the Logon Info Version 2
(TS_LOGON_INFO_VERSION_2) struct we allow zero values for cbUserName
and cbDomain in rdp_recv_logon_info_v1 and rdp_recv_logon_info_v2.
