1 files changed, 39 insertions, 0 deletions
diff --git a/is-agpl3+ b/is-agpl3+
new file mode 100755
index 0000000..5ff33e6
--- /dev/null
+++ b/is-agpl3+
@@ -0,0 +1,39 @@
+#!/bin/sh
+
+set -eu
+
+
+has_blurb()
+{
+    local file="$1"
+    while read line
+    do
+        if ! grep -F "$line" "$file"
+        then
+            return 1
+        fi
+    done <<EOF
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+EOF
+}
+
+exit=0
+for file in "$@"
+do
+    if ! has_blurb "$file" > /dev/null
+    then
+        echo "ERROR: does not have expected license blurb: $file"
+        exit=1
+    fi
+done
+
+exit $exit