[Qemu-devel] [PATCH 2.1 25/36] qapi event: convert VNC events

[Paolo Bonzini <pbonzini@redhat.com>]

From: Wenchao Xia <wenchaoqemu@gmail.com>

Since VNC_CONNECTED, VNC_DISCONNECTED, VNC_INITIALIZED share some
common functions, convert them in one patch.

Signed-off-by: Wenchao Xia <wenchaoqemu@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 docs/qmp/qmp-events.txt |  90 ---------------------------------------
 qapi-event.json         |  49 +++++++++++++++++++++
 ui/vnc.c                | 111 +++++++++++++++++++++++++-----------------------
 ui/vnc.h                |   4 +-
 4 files changed, 108 insertions(+), 146 deletions(-)

diff --git a/docs/qmp/qmp-events.txt b/docs/qmp/qmp-events.txt
index 101f207..37bc891 100644
--- a/docs/qmp/qmp-events.txt
+++ b/docs/qmp/qmp-events.txt
@@ -132,93 +132,3 @@ Example:
                       "connection-id": 1804289383, "host": "127.0.0.1",
                       "channel-id": 0, "tls": true}
 }}
-
-VNC_CONNECTED
--------------
-
-Emitted when a VNC client establishes a connection.
-
-Data:
-
-- "server": Server information (json-object)
-  - "host": IP address (json-string)
-  - "service": port number (json-string)
-  - "family": address family (json-string, "ipv4" or "ipv6")
-  - "auth": authentication method (json-string, optional)
-- "client": Client information (json-object)
-  - "host": IP address (json-string)
-  - "service": port number (json-string)
-  - "family": address family (json-string, "ipv4" or "ipv6")
-
-Example:
-
-{ "event": "VNC_CONNECTED",
-    "data": {
-        "server": { "auth": "sasl", "family": "ipv4",
-                    "service": "5901", "host": "0.0.0.0" },
-        "client": { "family": "ipv4", "service": "58425",
-                    "host": "127.0.0.1" } },
-    "timestamp": { "seconds": 1262976601, "microseconds": 975795 } }
-
-
-Note: This event is emitted before any authentication takes place, thus
-the authentication ID is not provided.
-
-VNC_DISCONNECTED
-----------------
-
-Emitted when the connection is closed.
-
-Data:
-
-- "server": Server information (json-object)
-  - "host": IP address (json-string)
-  - "service": port number (json-string)
-  - "family": address family (json-string, "ipv4" or "ipv6")
-  - "auth": authentication method (json-string, optional)
-- "client": Client information (json-object)
-  - "host": IP address (json-string)
-  - "service": port number (json-string)
-  - "family": address family (json-string, "ipv4" or "ipv6")
-  - "x509_dname": TLS dname (json-string, optional)
-  - "sasl_username": SASL username (json-string, optional)
-
-Example:
-
-{ "event": "VNC_DISCONNECTED",
-    "data": {
-        "server": { "auth": "sasl", "family": "ipv4",
-                    "service": "5901", "host": "0.0.0.0" },
-        "client": { "family": "ipv4", "service": "58425",
-                    "host": "127.0.0.1", "sasl_username": "luiz" } },
-    "timestamp": { "seconds": 1262976601, "microseconds": 975795 } }
-
-VNC_INITIALIZED
----------------
-
-Emitted after authentication takes place (if any) and the VNC session is
-made active.
-
-Data:
-
-- "server": Server information (json-object)
-  - "host": IP address (json-string)
-  - "service": port number (json-string)
-  - "family": address family (json-string, "ipv4" or "ipv6")
-  - "auth": authentication method (json-string, optional)
-- "client": Client information (json-object)
-  - "host": IP address (json-string)
-  - "service": port number (json-string)
-  - "family": address family (json-string, "ipv4" or "ipv6")
-  - "x509_dname": TLS dname (json-string, optional)
-  - "sasl_username": SASL username (json-string, optional)
-
-Example:
-
-{ "event": "VNC_INITIALIZED",
-    "data": {
-        "server": { "auth": "sasl", "family": "ipv4",
-                    "service": "5901", "host": "0.0.0.0"},
-        "client": { "family": "ipv4", "service": "46089",
-                    "host": "127.0.0.1", "sasl_username": "luiz" } },
-        "timestamp": { "seconds": 1263475302, "microseconds": 150772 } }
diff --git a/qapi-event.json b/qapi-event.json
index b8dec47..a86f8c9 100644
--- a/qapi-event.json
+++ b/qapi-event.json
@@ -137,3 +137,52 @@
 ##
 { 'event': 'NIC_RX_FILTER_CHANGED',
   'data': { '*name': 'str', 'path': 'str' } }
+
+##
+# @VNC_CONNECTED
+#
+# Emitted when a VNC client establishes a connection
+#
+# @server: server information
+#
+# @client: client information
+#
+# Note: This event is emitted before any authentication takes place, thus
+# the authentication ID is not provided
+#
+# Since: 0.13.0
+##
+{ 'event': 'VNC_CONNECTED',
+  'data': { 'server': 'VncServerInfo',
+            'client': 'VncBasicInfo' } }
+
+##
+# @VNC_INITIALIZED
+#
+# Emitted after authentication takes place (if any) and the VNC session is
+# made active
+#
+# @server: server information
+#
+# @client: client information
+#
+# Since: 0.13.0
+##
+{ 'event': 'VNC_INITIALIZED',
+  'data': { 'server': 'VncServerInfo',
+            'client': 'VncClientInfo' } }
+
+##
+# @VNC_DISCONNECTED
+#
+# Emitted when the connection is closed
+#
+# @server: server information
+#
+# @client: client information
+#
+# Since: 0.13.0
+##
+{ 'event': 'VNC_DISCONNECTED',
+  'data': { 'server': 'VncServerInfo',
+            'client': 'VncClientInfo' } }
diff --git a/ui/vnc.c b/ui/vnc.c
index 95eee5a..9ccd5e3 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -35,6 +35,7 @@
 #include "qmp-commands.h"
 #include "qemu/osdep.h"
 #include "ui/input.h"
+#include "qapi-event.h"
 
 #define VNC_REFRESH_INTERVAL_BASE GUI_REFRESH_INTERVAL_DEFAULT
 #define VNC_REFRESH_INTERVAL_INC  50
@@ -124,9 +125,10 @@ char *vnc_socket_remote_addr(const char *format, int fd) {
     return addr_to_string(format, &sa, salen);
 }
 
-static int put_addr_qdict(QDict *qdict, struct sockaddr_storage *sa,
-                          socklen_t salen)
+static VncBasicInfo *vnc_basic_info_get(struct sockaddr_storage *sa,
+                                        socklen_t salen)
 {
+    VncBasicInfo *info;
     char host[NI_MAXHOST];
     char serv[NI_MAXSERV];
     int err;
@@ -137,40 +139,40 @@ static int put_addr_qdict(QDict *qdict, struct sockaddr_storage *sa,
                            NI_NUMERICHOST | NI_NUMERICSERV)) != 0) {
         VNC_DEBUG("Cannot resolve address %d: %s\n",
                   err, gai_strerror(err));
-        return -1;
+        return NULL;
     }
 
-    qdict_put(qdict, "host", qstring_from_str(host));
-    qdict_put(qdict, "service", qstring_from_str(serv));
-    qdict_put(qdict, "family",qstring_from_str(inet_strfamily(sa->ss_family)));
-
-    return 0;
+    info = g_malloc0(sizeof(VncBasicInfo));
+    info->host = g_strdup(host);
+    info->service = g_strdup(serv);
+    info->family = inet_netfamily(sa->ss_family);
+    return info;
 }
 
-static int vnc_server_addr_put(QDict *qdict, int fd)
+static VncBasicInfo *vnc_basic_info_get_from_server_addr(int fd)
 {
     struct sockaddr_storage sa;
     socklen_t salen;
 
     salen = sizeof(sa);
     if (getsockname(fd, (struct sockaddr*)&sa, &salen) < 0) {
-        return -1;
+        return NULL;
     }
 
-    return put_addr_qdict(qdict, &sa, salen);
+    return vnc_basic_info_get(&sa, salen);
 }
 
-static int vnc_qdict_remote_addr(QDict *qdict, int fd)
+static VncBasicInfo *vnc_basic_info_get_from_remote_addr(int fd)
 {
     struct sockaddr_storage sa;
     socklen_t salen;
 
     salen = sizeof(sa);
     if (getpeername(fd, (struct sockaddr*)&sa, &salen) < 0) {
-        return -1;
+        return NULL;
     }
 
-    return put_addr_qdict(qdict, &sa, salen);
+    return vnc_basic_info_get(&sa, salen);
 }
 
 static const char *vnc_auth_name(VncDisplay *vd) {
@@ -224,81 +226,82 @@ static const char *vnc_auth_name(VncDisplay *vd) {
     return "unknown";
 }
 
-static int vnc_server_info_put(QDict *qdict)
+static VncServerInfo *vnc_server_info_get(void)
 {
-    if (vnc_server_addr_put(qdict, vnc_display->lsock) < 0) {
-        return -1;
+    VncServerInfo *info;
+    VncBasicInfo *bi = vnc_basic_info_get_from_server_addr(vnc_display->lsock);
+    if (!bi) {
+        return NULL;
     }
 
-    qdict_put(qdict, "auth", qstring_from_str(vnc_auth_name(vnc_display)));
-    return 0;
+    info = g_malloc(sizeof(*info));
+    info->base = bi;
+    info->has_auth = true;
+    info->auth = g_strdup(vnc_auth_name(vnc_display));
+    return info;
 }
 
 static void vnc_client_cache_auth(VncState *client)
 {
-#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
-    QDict *qdict;
-#endif
-
     if (!client->info) {
         return;
     }
 
-#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
-    qdict = qobject_to_qdict(client->info);
-#endif
-
 #ifdef CONFIG_VNC_TLS
     if (client->tls.session &&
         client->tls.dname) {
-        qdict_put(qdict, "x509_dname", qstring_from_str(client->tls.dname));
+        client->info->has_x509_dname = true;
+        client->info->x509_dname = g_strdup(client->tls.dname);
     }
 #endif
 #ifdef CONFIG_VNC_SASL
     if (client->sasl.conn &&
         client->sasl.username) {
-        qdict_put(qdict, "sasl_username",
-                  qstring_from_str(client->sasl.username));
+        client->info->has_sasl_username = true;
+        client->info->sasl_username = g_strdup(client->sasl.username);
     }
 #endif
 }
 
 static void vnc_client_cache_addr(VncState *client)
 {
-    QDict *qdict;
+    VncBasicInfo *bi = vnc_basic_info_get_from_remote_addr(client->csock);
 
-    qdict = qdict_new();
-    if (vnc_qdict_remote_addr(qdict, client->csock) < 0) {
-        QDECREF(qdict);
-        /* XXX: how to report the error? */
-        return;
+    if (bi) {
+        client->info = g_malloc0(sizeof(*client->info));
+        client->info->base = bi;
     }
-
-    client->info = QOBJECT(qdict);
 }
 
-static void vnc_qmp_event(VncState *vs, MonitorEvent event)
+static void vnc_qmp_event(VncState *vs, QAPIEvent event)
 {
-    QDict *server;
-    QObject *data;
+    VncServerInfo *si;
 
     if (!vs->info) {
         return;
     }
+    g_assert(vs->info->base);
 
-    server = qdict_new();
-    if (vnc_server_info_put(server) < 0) {
-        QDECREF(server);
+    si = vnc_server_info_get();
+    if (!si) {
         return;
     }
 
-    data = qobject_from_jsonf("{ 'client': %p, 'server': %p }",
-                              vs->info, QOBJECT(server));
-
-    monitor_protocol_event(event, data);
+    switch (event) {
+    case QAPI_EVENT_VNC_CONNECTED:
+        qapi_event_send_vnc_connected(si, vs->info->base, &error_abort);
+        break;
+    case QAPI_EVENT_VNC_INITIALIZED:
+        qapi_event_send_vnc_initialized(si, vs->info, &error_abort);
+        break;
+    case QAPI_EVENT_VNC_DISCONNECTED:
+        qapi_event_send_vnc_disconnected(si, vs->info, &error_abort);
+        break;
+    default:
+        break;
+    }
 
-    qobject_incref(vs->info);
-    qobject_decref(data);
+    qapi_free_VncServerInfo(si);
 }
 
 static VncClientInfo *qmp_query_vnc_client(const VncState *client)
@@ -1037,7 +1040,7 @@ void vnc_disconnect_finish(VncState *vs)
     vnc_jobs_join(vs); /* Wait encoding jobs */
 
     vnc_lock_output(vs);
-    vnc_qmp_event(vs, QEVENT_VNC_DISCONNECTED);
+    vnc_qmp_event(vs, QAPI_EVENT_VNC_DISCONNECTED);
 
     buffer_free(&vs->input);
     buffer_free(&vs->output);
@@ -1046,7 +1049,7 @@ void vnc_disconnect_finish(VncState *vs)
     buffer_free(&vs->ws_output);
 #endif /* CONFIG_VNC_WS */
 
-    qobject_decref(vs->info);
+    qapi_free_VncClientInfo(vs->info);
 
     vnc_zlib_clear(vs);
     vnc_tight_clear(vs);
@@ -2321,7 +2324,7 @@ static int protocol_client_init(VncState *vs, uint8_t *data, size_t len)
     vnc_flush(vs);
 
     vnc_client_cache_auth(vs);
-    vnc_qmp_event(vs, QEVENT_VNC_INITIALIZED);
+    vnc_qmp_event(vs, QAPI_EVENT_VNC_INITIALIZED);
 
     vnc_read_when(vs, protocol_client_msg, 1);
 
@@ -2844,7 +2847,7 @@ static void vnc_connect(VncDisplay *vd, int csock,
     }
 
     vnc_client_cache_addr(vs);
-    vnc_qmp_event(vs, QEVENT_VNC_CONNECTED);
+    vnc_qmp_event(vs, QAPI_EVENT_VNC_CONNECTED);
     vnc_set_share_mode(vs, VNC_SHARE_MODE_CONNECTING);
 
     vs->vd = vd;
diff --git a/ui/vnc.h b/ui/vnc.h
index 8da81b8..07af9f7 100644
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -31,7 +31,6 @@
 #include "qemu/queue.h"
 #include "qemu/thread.h"
 #include "ui/console.h"
-#include "monitor/monitor.h"
 #include "audio/audio.h"
 #include "qemu/bitmap.h"
 #include <zlib.h>
@@ -40,6 +39,7 @@
 #include "keymaps.h"
 #include "vnc-palette.h"
 #include "vnc-enc-zrle.h"
+#include "qapi-types.h"
 
 // #define _VNC_DEBUG 1
 
@@ -292,7 +292,7 @@ struct VncState
     bool websocket;
 #endif /* CONFIG_VNC_WS */
 
-    QObject *info;
+    VncClientInfo *info;
 
     Buffer output;
     Buffer input;
-- 
1.9.3