Compilation failures with recent freerdp-3

[hlein]

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Describe the bug

hydra-9.5 cannot compile against recent freerdp-3.x, such as freerdp-3.2.0

Since #538 claimed to add support for freerdp-3 I tried going back to 3.0.0, still fails. But the rest of the following details are against 3.2.0.

Compilation fails with many errors like:

x86_64-pc-linux-gnu-gcc -march=znver2 -O2 -pipe -msse4.1 -msse4.2 -msse4 -mavx -I. -march=znver2 -O2 -pipe -msse4.1 -msse4.2 -msse4 -mavx -fcommon -pie -fPIE -fstack-protector-all --param ssp-buffer-size=4 -Wl,-z,now -Wl,-z,relro -Wl,--allow-multiple-definition -march=znver2 -O2 -pipe -msse4.1 -msse4.2 -msse4 -mavx -D_GNU_SOURCE -c hydra-time.c -DHAVE_MYSQL_MYSQL_H -DLIBOPENSSL  -DHAVE_PCRE -DLIBMYSQLCLIENT -DLIBPOSTGRES -DLIBSVN -DHAVE_ZLIB  -DLIBMCACHED -DLIBMONGODB -DLIBBSON -DLIBFREERDP -DLIBWINPR3 -DLIBSMBCLIENT -DHAVE_MATH_H -DHAVE_SYS_PARAM_H -I/usr/include/mysql -I/usr/include -I/usr/include -I/usr/include/postgresql -I/usr/include -I/usr/include/subversion-1 -I/usr/include/apr-1 -I/usr/include/subversion-1 -I/usr/include/libmemcached -I/usr/include/libmongoc-1.0 -I/usr/include/libbson-1.0 -I/usr/include/freerdp3 -I/usr/include/winpr3 -I/usr/include/samba-4.0
hydra-rdp.c: In function ‘rdp_connect’:
hydra-rdp.c:23:11: error: ‘freerdp’ {aka ‘struct rdp_freerdp’} has no member named ‘settings’
   23 |   instance->settings->Username = login;
      |           ^~
hydra-rdp.c:24:11: error: ‘freerdp’ {aka ‘struct rdp_freerdp’} has no member named ‘settings’
   24 |   instance->settings->Password = password;
      |           ^~
hydra-rdp.c:25:11: error: ‘freerdp’ {aka ‘struct rdp_freerdp’} has no member named ‘settings’
   25 |   instance->settings->IgnoreCertificate = TRUE;
      |           ^~
hydra-rdp.c:27:13: error: ‘freerdp’ {aka ‘struct rdp_freerdp’} has no member named ‘settings’
   27 |     instance->settings->AuthenticationOnly = FALSE;
      |             ^~
hydra-rdp.c:29:13: error: ‘freerdp’ {aka ‘struct rdp_freerdp’} has no member named ‘settings’
   29 |     instance->settings->AuthenticationOnly = TRUE;
      |             ^~
hydra-rdp.c:30:11: error: ‘freerdp’ {aka ‘struct rdp_freerdp’} has no member named ‘settings’
   30 |   instance->settings->ServerHostname = server;
      |           ^~

There is a WITH_FREERDP_DEPRECATED you can define to enable some measure of backwards compatibility. Doing so handles the settings errors but then there's still more failures like:

/usr/include/winpr3/winpr/winpr.h:68:41: note: in definition of macro ‘WINPR_DEPRECATED_VAR’
   68 | #define WINPR_DEPRECATED_VAR(text, obj) obj __attribute__((deprecated(text)))
      |                                         ^~~
hydra-rdp.c:34:21: error: ‘rdpSettings’ {aka ‘struct rdp_settings’} has no member named ‘MaxTimeInCheckLoop’
   34 |   instance->settings->MaxTimeInCheckLoop = 100;
      |                     ^~

And indeed MaxTimeInCheckLoop has been removed entirely here: FreeRDP/FreeRDP@5f81005

Various other projects have simply sworn off the freerdp-3 branch until they stabilize their ABI, which seems sensible.

To Reproduce

• Ensure that you have tested the bug to be present in the current github code. You might be using an outdated version that comes with your Linux distribution!
• You must provide full command line options.

Steps to reproduce the behavior:

1. install freerdp-3.0+
2. attempt to compile hydra-9.5.0

Expected behavior
Build should succeed, and the resulting hydra rdp://... should complete successfully

Screenshots
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Desktop (please complete the following information):

• Gentoo Linux
• hydra-9.5.0

Additional context
Add any other context about the problem here.

[vanhauser-thc]

so what do you recommend - not support libfreerdp3 (do not look for it), or add support?

[hlein]

I think just don't support it for now.

I first tried to figure out how to add support for current libfreerdp3; could not find a porting guide so I went looking at other projects to see what they did. Well... what they did was not support it :/

If someone wants to come up with patches that restore support that would be great (until/unless they change their API yet again).