function for providing file transaction IDs

[cgilite] / session.sh

diff --git a/session.sh b/session.sh
index 60ae57734a6b1e659460139c7b1b497fae5d866b..5bf8fad83a8067d72d432a73fd2784568b8694f9 100755 (executable)
--- a/session.sh
+++ b/session.sh
@@ -39,7 +39,16 @@ timeid(){
   } | slopecode
 }
 
-checkid(){ grep -m 1 -xE '[0-9a-zA-Z:_]{16}'; }
+checkid(){ grep -m 1 -xE '[0-9a-zA-Z:=]{16}'; }
+
+transid(){
+  # transaction ID to modify a given file
+  local file="$1"
+  { stat -c %F%i%n%N%s%Y "$file" 2>&-
+    printf %s "$SESSION_ID"
+    server_key
+  } | sha256sum | cut -d\  -f1
+}
 
 update_session(){
   local session sid time sig serverkey checksig