configd: T6504: send sudo_user on session init and set env variable

The environment variable SUDO_USER is checked by system_login.py so as
to prevent deleting the current user. Provide from config session and
set within configd environment.

(cherry picked from commit 7016f840f1193399f6ac59fab7faa721049229e8)

1 files changed, 7 insertions, 3 deletions

diff --git a/src/services/vyos-configd b/src/services/vyos-configd
index c89c486e5..d92b539c8 100755
--- a/src/services/vyos-configd
+++ b/src/services/vyos-configd
@@ -179,8 +179,13 @@ def initialization(socket):
     pid_string = socket.recv().decode("utf-8", "ignore")
     resp = "pid"
     socket.send(resp.encode())
+    sudo_user_string = socket.recv().decode("utf-8", "ignore")
+    resp = "sudo_user"
+    socket.send(resp.encode())
 
     logger.debug(f"config session pid is {pid_string}")
+    logger.debug(f"config session sudo_user is {sudo_user_string}")
+
     try:
         session_out = os.readlink(f"/proc/{pid_string}/fd/1")
         session_mode = 'w'
@@ -192,6 +197,8 @@ def initialization(socket):
         session_out = script_stdout_log
         session_mode = 'a'
 
+    os.environ['SUDO_USER'] = sudo_user_string
+
     try:
         configsource = ConfigSourceString(running_config_text=active_string,
                                           session_config_text=session_string)
@@ -266,9 +273,6 @@ if __name__ == '__main__':
     cfg_group = grp.getgrnam(CFG_GROUP)
     os.setgid(cfg_group.gr_gid)
 
-    os.environ['SUDO_USER'] = 'vyos'
-    os.environ['SUDO_GID'] = str(cfg_group.gr_gid)
-
     def sig_handler(signum, frame):
         shutdown()