1 files changed, 39 insertions, 0 deletions
diff --git a/windows/utils/dputs.c b/windows/utils/dputs.c
new file mode 100644
index 00000000..f582509a
--- /dev/null
+++ b/windows/utils/dputs.c
@@ -0,0 +1,39 @@
+/*
+ * Implementation of dputs() for Windows.
+ *
+ * The debug messages are written to STD_OUTPUT_HANDLE, except that
+ * first it has to make sure that handle _exists_, by calling
+ * AllocConsole first if necessary.
+ *
+ * They also go into a file called debug.log.
+ */
+
+#include "putty.h"
+#include "utils/utils.h"
+
+static HANDLE debug_fp = INVALID_HANDLE_VALUE;
+static HANDLE debug_hdl = INVALID_HANDLE_VALUE;
+static int debug_got_console = 0;
+
+void dputs(const char *buf)
+{
+    DWORD dw;
+
+    if (!debug_got_console) {
+        if (AllocConsole()) {
+            debug_got_console = 1;
+            debug_hdl = GetStdHandle(STD_OUTPUT_HANDLE);
+        }
+    }
+    if (debug_fp == INVALID_HANDLE_VALUE) {
+        debug_fp = CreateFile("debug.log", GENERIC_WRITE, FILE_SHARE_READ,
+                              NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+    }
+
+    if (debug_fp != INVALID_HANDLE_VALUE) {
+        WriteFile(debug_fp, buf, strlen(buf), &dw, NULL);
+    }
+    if (debug_hdl != INVALID_HANDLE_VALUE) {
+        WriteFile(debug_hdl, buf, strlen(buf), &dw, NULL);
+    }
+}