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meson: Require libssh-0.8.1 or newer

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According to repology.org:

              RHEL-8: 0.9.4
              RHEL-9: 0.9.6
           Debian 11: 0.9.5
  openSUSE Leap 15.3: 0.8.7
        Ubuntu 20.04: 0.9.3

And the rest of distros has something newer anyways. Requiring
0.8.1 or newer allows us to drop the terrible hack where we
rename functions at meson level using #define. Note, 0.8.0 is
the version of libssh where the rename happened. It also allows
us to stick with SHA-256 hash algorithm for public keys.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Michal Privoznik 2022-09-07 15:08:20 +02:00
parent c83c6e4e7a
commit 7c35778126
3 changed files with 3 additions and 22 deletions
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2
libvirt.spec.in
View File

@ -378,7 +378,7 @@ BuildRequires: wireshark-devel
%endif
%if %{with_libssh}
BuildRequires: libssh-devel >= 0.7.0
BuildRequires: libssh-devel >= 0.8.1
%endif
BuildRequires: rpcgen

15
meson.build
View File

@ -1025,24 +1025,11 @@ else
libpcap_dep = dependency('', required: false)
endif
libssh_version = '0.7'
libssh_version = '0.8.1'
if conf.has('WITH_REMOTE')
libssh_dep = dependency('libssh', version: '>=' + libssh_version, required: get_option('libssh'))
if libssh_dep.found()
conf.set('WITH_LIBSSH', 1)
# Check if new functions exists, if not redefine them with old deprecated ones.
# List of [ new_function, deprecated_function ].
functions = [
[ 'ssh_get_server_publickey', 'ssh_get_publickey' ],
[ 'ssh_session_is_known_server', 'ssh_is_server_known' ],
[ 'ssh_session_update_known_hosts', 'ssh_write_knownhost' ],
]
foreach name : functions
if not cc.has_function(name[0], dependencies: libssh_dep)
conf.set(name[0], name[1])
endif
endforeach
endif
else
libssh_dep = dependency('', required: false)

8
src/rpc/virnetlibsshsession.c
View File

@ -39,12 +39,6 @@ VIR_LOG_INIT("rpc.netlibsshsession");
#define VIR_NET_LIBSSH_BUFFER_SIZE 1024
#if LIBSSH_VERSION_INT < SSH_VERSION_INT(0, 8, 1)
# define VIR_SSH_HOSTKEY_HASH SSH_PUBLICKEY_HASH_SHA1
#else
# define VIR_SSH_HOSTKEY_HASH SSH_PUBLICKEY_HASH_SHA256
#endif
/* TRACE_LIBSSH=<level> enables tracing in libssh itself.
* The meaning of <level> is described here:
* https://api.libssh.org/master/group__libssh__log.html
@ -212,7 +206,7 @@ virLibsshServerKeyAsString(virNetLibsshSession *sess)
/* calculate remote key hash, using SHA256 algorithm that is
* the default in modern OpenSSH, fallback to SHA1 for older
* libssh. The returned value must be freed */
ret = ssh_get_publickey_hash(key, VIR_SSH_HOSTKEY_HASH,
ret = ssh_get_publickey_hash(key, SSH_PUBLICKEY_HASH_SHA256,
&keyhash, &keyhashlen);
ssh_key_free(key);
if (ret < 0) {