Tests: passkey su authentication update

The issue is an infinite loop in cares.
generate_unique_id() caused by 'LD_PRELOAD=/opt/random.so'.
generate_unique_id() is calling arc4random_buf() and the loop in cares
is keeping a list of old ids to avoid those. But arc4random_buf() is
overwritten by random.so and always returns the same value and as a
result the same id is always used and causes the infinite loop.

To make the environment only available to
passkey_child not to add those environment variable to
/etc/sysconfig/sssd but rename passkey_child.

Signed-off-by: Madhuri Upadhye <[email protected]>

sssd_test_framework/hosts/client.py

@@ -140,6 +140,7 @@ def backup(self) -> None:
             backup /etc/sssd "{location}/config"
             backup /var/log/sssd "{location}/logs"
             backup /var/lib/sss "{location}/lib"
+            backup /usr/libexec/sssd/passkey_child "{location}/passkey_child.orig"
             """,
             log_level=SSHLog.Error,
         )
@@ -165,10 +166,11 @@ def restore(self) -> None:
                 fi
             }}
 
-            rm --force --recursive /etc/sssd /var/lib/sss /var/log/sssd
+            rm --force --recursive /etc/sssd /var/lib/sss /var/log/sssd /usr/libexec/sssd/passkey_child
             restore "{self._backup_location}/config" /etc/sssd
             restore "{self._backup_location}/logs" /var/log/sssd
             restore "{self._backup_location}/lib" /var/lib/sss
+            restore "{self._backup_location}/passkey_child.orig" /usr/libexec/sssd/passkey_child
             """,
             log_level=SSHLog.Error,
         )

sssd_test_framework/utils/authentication.py

@@ -321,21 +321,34 @@ def passkey(self, username: str, *, pin: str | int, device: str, ioctl: str, scr
         :rtype: bool
         """
         self.fs.backup("/etc/sysconfig/sssd")
+        import pdb; pdb.set_trace()
         device_path = self.fs.upload_to_tmp(device, mode="a=r")
         ioctl_path = self.fs.upload_to_tmp(ioctl, mode="a=r")
         script_path = self.fs.upload_to_tmp(script, mode="a=r")
+        #self.host.ssh.run(
+        #    "mv -f /usr/libexec/sssd/passkey_child /usr/libexec/sssd/passkey_child.orig", raise_on_error=False
+        #)
+        import pdb; pdb.set_trace()
+        self.fs.backup("/usr/libexec/sssd/passkey_child")
+        #self.fs.truncate("/usr/libexec/sssd/passkey_child")
+        #sssd.clear(db=True, memcache=True, logs=True)
 
         run_su = self.fs.mktmp(
             rf"""
-            #!/bin/bash
-            set -ex
-            env | grep ^UMOCKDEV_ > /etc/sysconfig/sssd
-            printf "LD_PRELOAD=$LD_PRELOAD" >> /etc/sysconfig/sssd
-            systemctl restart sssd
-            chmod -R a+rwx $UMOCKDEV_DIR
-
-            su --shell /bin/sh nobody -c "su - '{username}'"
-            """,
+                #!/bin/bash
+                set -ex
+                echo '#!/bin/bash' > /usr/libexec/sssd/passkey_child
+                echo -n 'export ' >> /usr/libexec/sssd/passkey_child
+                env | grep ^UMOCKDEV_ >> /usr/libexec/sssd/passkey_child
+                echo -n 'export ' >> /usr/libexec/sssd/passkey_child
+                printf "LD_PRELOAD=$LD_PRELOAD\n" >> /usr/libexec/sssd/passkey_child
+                echo 'exec /usr/libexec/sssd/passkey_child.orig $@' >> /usr/libexec/sssd/passkey_child
+                chmod 755 /usr/libexec/sssd/passkey_child
+                systemctl restart sssd
+                chmod -R a+rwx $UMOCKDEV_DIR
+
+                su --shell /bin/sh nobody -c "su - '{username}'"
+                """,
             mode="a=rx",
         )
 
@@ -384,6 +397,10 @@ def passkey(self, username: str, *, pin: str | int, device: str, ioctl: str, scr
             """
         )
 
+        #self.host.ssh.run(
+        #    "mv -f /usr/libexec/sssd/passkey_child.orig /usr/libexec/sssd/passkey_child", raise_on_error=False
+        #)
+
         if result.rc > 200:
             raise ExpectScriptError(result.rc)