From d98f11705e6e74ee86104b6c02c911f835ae2e45 Mon Sep 17 00:00:00 2001
From: Bernhard Miklautz <bernhard.miklautz@thincast.com>
Date: Mon, 16 Jan 2017 08:58:04 +0100
Subject: [PATCH] shadow server: add more error messages

---
 server/shadow/shadow.c        | 9 +++++++++
 server/shadow/shadow_server.c | 9 +++++++++
 2 files changed, 18 insertions(+)

diff --git a/server/shadow/shadow.c b/server/shadow/shadow.c
index 734f3a5ec..4daf55e47 100644
--- a/server/shadow/shadow.c
+++ b/server/shadow/shadow.c
@@ -36,6 +36,7 @@ static BOOL g_MessagePump = FALSE;
 #endif
 
 #include <freerdp/server/shadow.h>
+#define TAG SERVER_TAG("shadow")
 
 int main(int argc, char** argv)
 {
@@ -52,6 +53,7 @@ int main(int argc, char** argv)
 	if (!server)
 	{
 		status = -1;
+		WLog_ERR(TAG, "Server new failed");
 		goto fail_server_new;
 	}
 
@@ -70,14 +72,21 @@ int main(int argc, char** argv)
 	if ((status = shadow_server_parse_command_line(server, argc, argv)) < 0)
 	{
 		shadow_server_command_line_status_print(server, argc, argv, status);
+		WLog_ERR(TAG, "Problem parsing the command line.");
 		goto fail_parse_command_line;
 	}
 
 	if ((status = shadow_server_init(server)) < 0)
+	{
+		WLog_ERR(TAG, "Server initialization failed.");
 		goto fail_server_init;
+	}
 
 	if ((status = shadow_server_start(server)) < 0)
+	{
+		WLog_ERR(TAG, "Failed to start server.");
 		goto fail_server_start;
+	}
 
 	if (g_MessagePump)
 	{
diff --git a/server/shadow/shadow_server.c b/server/shadow/shadow_server.c
index 9a66e9c01..094f1bf0a 100644
--- a/server/shadow/shadow_server.c
+++ b/server/shadow/shadow_server.c
@@ -453,12 +453,18 @@ int shadow_server_start(rdpShadowServer* server)
 	server->screen = shadow_screen_new(server);
 
 	if (!server->screen)
+	{
+		WLog_ERR(TAG, "screen_new failed");
 		return -1;
+	}
 
 	server->capture = shadow_capture_new(server);
 
 	if (!server->capture)
+	{
+		WLog_ERR(TAG, "capture_new failed");
 		return -1;
+	}
 
 	if (!server->ipcSocket)
 		status = server->listener->Open(server->listener, NULL, (UINT16) server->port);
@@ -466,7 +472,10 @@ int shadow_server_start(rdpShadowServer* server)
 		status = server->listener->OpenLocal(server->listener, server->ipcSocket);
 
 	if (!status)
+	{
+		WLog_ERR(TAG, "Problem creating listener. (Port already used or insufficient permissions?)");
 		return -1;
+	}
 
 	if (!(server->thread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)
 				shadow_server_thread, (void*) server, 0, NULL)))