From 26b4ec448cdd68ab260e4a39a493cbdf8eef8d3f Mon Sep 17 00:00:00 2001
From: Tasuku Suzuki <stasuku@gmail.com>
Date: Sat, 4 Jul 2015 23:13:31 +0900
Subject: Support logging direct to syslog, if enabled.

[ChangeLog][QtCore][Logging] Systems with syslog may now pass -syslog to
configure to send logging output to syslog.

Change-Id: I80d58ee6e70d8deb2409fc666e7e7f2d7f52b8e1
Reviewed-by: Kai Koehne <kai.koehne@theqtcompany.com>
---
 src/corelib/global/global.pri   |  4 ++++
 src/corelib/global/qlogging.cpp | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)

(limited to 'src')

diff --git a/src/corelib/global/global.pri b/src/corelib/global/global.pri
index 6a8104bee2..43f3a86544 100644
--- a/src/corelib/global/global.pri
+++ b/src/corelib/global/global.pri
@@ -54,3 +54,7 @@ journald {
     PKGCONFIG_PRIVATE += libsystemd-journal
     DEFINES += QT_USE_JOURNALD
 }
+
+syslog {
+    DEFINES += QT_USE_SYSLOG
+}
diff --git a/src/corelib/global/qlogging.cpp b/src/corelib/global/qlogging.cpp
index fca8656f9b..20c31f7ef8 100644
--- a/src/corelib/global/qlogging.cpp
+++ b/src/corelib/global/qlogging.cpp
@@ -65,6 +65,9 @@
 # include <systemd/sd-journal.h>
 # include <syslog.h>
 #endif
+#if defined(QT_USE_SYSLOG) && !defined(QT_BOOTSTRAPPED)
+# include <syslog.h>
+#endif
 #ifdef Q_OS_UNIX
 # include <sys/types.h>
 # include <sys/stat.h>
@@ -1436,6 +1439,32 @@ static void systemd_default_message_handler(QtMsgType type,
 }
 #endif
 
+#ifdef QT_USE_SYSLOG
+static void syslog_default_message_handler(QtMsgType type, const char *message)
+{
+    int priority = LOG_INFO; // Informational
+    switch (type) {
+    case QtDebugMsg:
+        priority = LOG_DEBUG; // Debug-level messages
+        break;
+    case QtInfoMsg:
+        priority = LOG_INFO; // Informational conditions
+        break;
+    case QtWarningMsg:
+        priority = LOG_WARNING; // Warning conditions
+        break;
+    case QtCriticalMsg:
+        priority = LOG_CRIT; // Critical conditions
+        break;
+    case QtFatalMsg:
+        priority = LOG_ALERT; // Action must be taken immediately
+        break;
+    }
+
+    syslog(priority, "%s", message);
+}
+#endif
+
 #ifdef Q_OS_ANDROID
 static void android_default_message_handler(QtMsgType type,
                                   const QMessageLogContext &context,
@@ -1481,6 +1510,9 @@ static void qDefaultMessageHandler(QtMsgType type, const QMessageLogContext &con
 #elif defined(QT_USE_JOURNALD) && !defined(QT_BOOTSTRAPPED)
         systemd_default_message_handler(type, context, logMessage);
         return;
+#elif defined(QT_USE_SYSLOG) && !defined(QT_BOOTSTRAPPED)
+        syslog_default_message_handler(type, logMessage.toUtf8().constData());
+        return;
 #elif defined(Q_OS_ANDROID)
         android_default_message_handler(type, context, logMessage);
         return;
-- 
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