From 312e4d37cc964bbc5bd4e20fd25500b08dc70268 Mon Sep 17 00:00:00 2001
From: Ben Longbons <b.r.longbons@gmail.com>
Date: Wed, 9 Apr 2014 00:35:55 -0700
Subject: Add @source command to help modified verions satisfy the AGPL

---
 src/map/atcommand.cpp | 21 +++++++++++++++++++++
 src/map/pc.cpp        |  8 ++++++++
 2 files changed, 29 insertions(+)

(limited to 'src/map')

diff --git a/src/map/atcommand.cpp b/src/map/atcommand.cpp
index 78a50ab..4b07a52 100644
--- a/src/map/atcommand.cpp
+++ b/src/map/atcommand.cpp
@@ -4,6 +4,8 @@
 #include <cstring>
 #include <ctime>
 
+#include "../conf/version.hpp"
+
 #include "../compat/nullpo.hpp"
 #include "../compat/fun.hpp"
 
@@ -4888,6 +4890,22 @@ ATCE atcommand_doomspot(Session *s, dumb_ptr<map_session_data> sd,
     return ATCE::OKAY;
 }
 
+static
+ATCE atcommand_source(Session *s, dumb_ptr<map_session_data>,
+        ZString)
+{
+    clif_displaymessage(s,
+            "This server code consists of Free Software under GPL3&AGPL3");
+    clif_displaymessage(s,
+            "This is commit " VERSION_HASH ", also known as " VERSION_FULL);
+    clif_displaymessage(s,
+            "The version is " VERSION_STRING);
+    clif_displaymessage(s,
+            "For source, see " VENDOR_SOURCE);
+
+    return ATCE::OKAY;
+}
+
 
 
 // declared extern above
@@ -5310,4 +5328,7 @@ Map<XString, AtCommandInfo> atcommand_info =
     {"doomspot", {"",
         60, atcommand_doomspot,
         "Kill all players on the same tile"}},
+    {"source", {"",
+        0, atcommand_source,
+        "Legal information about source code (must be a level 0 command!)"}},
 };
diff --git a/src/map/pc.cpp b/src/map/pc.cpp
index 7077b44..fa633b8 100644
--- a/src/map/pc.cpp
+++ b/src/map/pc.cpp
@@ -789,6 +789,14 @@ int pc_authok(int id, int login_id2, TimeT connect_until_time,
 // this is far from the only such thing, but most of the others are logs
 void pc_show_motd(dumb_ptr<map_session_data> sd)
 {
+    // Attention all forks: DO NOT REMOVE THIS NOTICE.
+    // It exists to meet legal requirements.
+    //
+    // If you remove the sending of this message,
+    // the license does not permit you to publicly use this software.
+
+    clif_displaymessage(sd->sess, "This server is Free Software, for details type @source in chat or use the tmwa-source tool");
+
     sd->state.seen_motd = true;
     io::ReadFile in(motd_txt);
     if (in.is_open())
-- 
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