cifs: dump the session id and keys also for SMB2 sessions (f560cda9) · Commits · 戴 / test

We already dump these keys for SMB3, lets also dump it for SMB2 sessions so that we can use the session key in wireshark to check and validate that the signatures are correct. Signed-off-by:

Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by:

Steve French <stfrench@microsoft.com> Reviewed-by:

Aurelien Aptel <aaptel@suse.com>

fs/cifs/smb2pdu.c

+15 −0

Original line number	Diff line number	Diff line
		@@ -1552,6 +1552,21 @@ SMB2_sess_auth_rawntlmssp_authenticate(struct SMB2_sess_data *sess_data)
		}

		rc = SMB2_sess_establish_session(sess_data);
		#ifdef CONFIG_CIFS_DEBUG_DUMP_KEYS
		if (ses->server->dialect < SMB30_PROT_ID) {
		cifs_dbg(VFS, "%s: dumping generated SMB2 session keys\n", __func__);
		/*
		* The session id is opaque in terms of endianness, so we can't
		* print it as a long long. we dump it as we got it on the wire
		*/
		cifs_dbg(VFS, "Session Id %*ph\n", (int)sizeof(ses->Suid),
		&ses->Suid);
		cifs_dbg(VFS, "Session Key %*ph\n",
		SMB2_NTLMV2_SESSKEY_SIZE, ses->auth_key.response);
		cifs_dbg(VFS, "Signing Key %*ph\n",
		SMB3_SIGN_KEY_SIZE, ses->auth_key.response);
		}
		#endif
		out:
		kfree(ntlmssp_blob);
		SMB2_sess_free_buffer(sess_data);

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