qapi/monitor: refactor set/expire_password with enums

'protocol' and 'connected' are better suited as enums than as strings,
make use of that. No functional change intended.

Suggested-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
[FE: update "Since: " from 6.2 to 7.0
     put 'keep' first in enum to ease use as a default]
Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
Message-Id: <20220225084949.35746-3-f.ebner@proxmox.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

2 files changed, 39 insertions, 27 deletions

diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 8c384dc1b2..ff78741b75 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -1398,8 +1398,24 @@ void hmp_set_password(Monitor *mon, const QDict *qdict)
     const char *password  = qdict_get_str(qdict, "password");
     const char *connected = qdict_get_try_str(qdict, "connected");
     Error *err = NULL;
+    DisplayProtocol proto;
+    SetPasswordAction conn;
 
-    qmp_set_password(protocol, password, !!connected, connected, &err);
+    proto = qapi_enum_parse(&DisplayProtocol_lookup, protocol,
+                            DISPLAY_PROTOCOL_VNC, &err);
+    if (err) {
+        goto out;
+    }
+
+    conn = qapi_enum_parse(&SetPasswordAction_lookup, connected,
+                           SET_PASSWORD_ACTION_KEEP, &err);
+    if (err) {
+        goto out;
+    }
+
+    qmp_set_password(proto, password, !!connected, conn, &err);
+
+out:
     hmp_handle_error(mon, err);
 }
 
@@ -1408,8 +1424,17 @@ void hmp_expire_password(Monitor *mon, const QDict *qdict)
     const char *protocol  = qdict_get_str(qdict, "protocol");
     const char *whenstr = qdict_get_str(qdict, "time");
     Error *err = NULL;
+    DisplayProtocol proto;
+
+    proto = qapi_enum_parse(&DisplayProtocol_lookup, protocol,
+                            DISPLAY_PROTOCOL_VNC, &err);
+    if (err) {
+        goto out;
+    }
 
-    qmp_expire_password(protocol, whenstr, &err);
+    qmp_expire_password(proto, whenstr, &err);
+
+out:
     hmp_handle_error(mon, err);
 }
 
diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c
index db4d186448..b6e8b57fcc 100644
--- a/monitor/qmp-cmds.c
+++ b/monitor/qmp-cmds.c
@@ -168,33 +168,27 @@ void qmp_system_wakeup(Error **errp)
     qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER, errp);
 }
 
-void qmp_set_password(const char *protocol, const char *password,
-                      bool has_connected, const char *connected, Error **errp)
+void qmp_set_password(DisplayProtocol protocol, const char *password,
+                      bool has_connected, SetPasswordAction connected,
+                      Error **errp)
 {
     int disconnect_if_connected = 0;
     int fail_if_connected = 0;
     int rc;
 
     if (has_connected) {
-        if (strcmp(connected, "fail") == 0) {
-            fail_if_connected = 1;
-        } else if (strcmp(connected, "disconnect") == 0) {
-            disconnect_if_connected = 1;
-        } else if (strcmp(connected, "keep") == 0) {
-            /* nothing */
-        } else {
-            error_setg(errp, QERR_INVALID_PARAMETER, "connected");
-            return;
-        }
+        fail_if_connected = connected == SET_PASSWORD_ACTION_FAIL;
+        disconnect_if_connected = connected == SET_PASSWORD_ACTION_DISCONNECT;
     }
 
-    if (strcmp(protocol, "spice") == 0) {
+    if (protocol == DISPLAY_PROTOCOL_SPICE) {
         if (!qemu_using_spice(errp)) {
             return;
         }
         rc = qemu_spice.set_passwd(password, fail_if_connected,
                                    disconnect_if_connected);
-    } else if (strcmp(protocol, "vnc") == 0) {
+    } else {
+        assert(protocol == DISPLAY_PROTOCOL_VNC);
         if (fail_if_connected || disconnect_if_connected) {
             /* vnc supports "connected=keep" only */
             error_setg(errp, QERR_INVALID_PARAMETER, "connected");
@@ -203,10 +197,6 @@ void qmp_set_password(const char *protocol, const char *password,
         /* Note that setting an empty password will not disable login through
          * this interface. */
         rc = vnc_display_password(NULL, password);
-    } else {
-        error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol",
-                   "'vnc' or 'spice'");
-        return;
     }
 
     if (rc != 0) {
@@ -214,7 +204,7 @@ void qmp_set_password(const char *protocol, const char *password,
     }
 }
 
-void qmp_expire_password(const char *protocol, const char *whenstr,
+void qmp_expire_password(DisplayProtocol protocol, const char *whenstr,
                          Error **errp)
 {
     time_t when;
@@ -230,17 +220,14 @@ void qmp_expire_password(const char *protocol, const char *whenstr,
         when = strtoull(whenstr, NULL, 10);
     }
 
-    if (strcmp(protocol, "spice") == 0) {
+    if (protocol == DISPLAY_PROTOCOL_SPICE) {
         if (!qemu_using_spice(errp)) {
             return;
         }
         rc = qemu_spice.set_pw_expire(when);
-    } else if (strcmp(protocol, "vnc") == 0) {
-        rc = vnc_display_pw_expire(NULL, when);
     } else {
-        error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol",
-                   "'vnc' or 'spice'");
-        return;
+        assert(protocol == DISPLAY_PROTOCOL_VNC);
+        rc = vnc_display_pw_expire(NULL, when);
     }
 
     if (rc != 0) {