From ad7db43a91b914ede616e90fc77f997976d8b4a3 Mon Sep 17 00:00:00 2001
From: John Klug <john.klug@multitech.com>
Date: Thu, 12 Jul 2018 18:25:22 -0500
Subject: Prefer MAC, then UUID for generating U-Boot Password

---
 src/ubpasswd.sh | 66 ++++++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 54 insertions(+), 12 deletions(-)

(limited to 'src')

diff --git a/src/ubpasswd.sh b/src/ubpasswd.sh
index 0e5ba2e..34180de 100755
--- a/src/ubpasswd.sh
+++ b/src/ubpasswd.sh
@@ -24,22 +24,24 @@ if ! [[ -x /sbin/mts-hashpwd ]] ; then
   exit 1
 fi
 usage() {
-  echo "ubpasswd [-c] [-m] [-n] [-r] [-u] [-d] [-s salt] [password]"
+  echo "ubpasswd [-c] [-d] [-n] [-i] [-m] [-u] [-r] [-f] [-s salt] [password]"
   echo "  -c        clear the U-Boot password"
   echo "  -d        debug"
-  echo "  -f        returns true if U-Boot password"
-  echo "            feature is available."
-  echo "  -m        means use the mac to generate the password (obsolete)."
   echo "  -n        dryrun for setting password"
+  echo "  -i        use the uuid  to generate the password"
+  echo "  -m        means use the mac to generate the password."
+  echo "  -u        means u-boot only (not UNIX password)"
   echo "  -r        returns true if U-Boot password"
   echo "            is currently required"
+  echo "  -f        returns true if U-Boot password"
+  echo "            feature is available."
   echo "  -s        salt is user supplied salt"
-  echo "  -u        means u-boot only (not UNIX password)"
   echo "  password  is a user supplied password"
   echo "A salt not supplied is generated."
   echo "If a password is not supplied, it is generated"
-  echo "If generating a password, and -m is not supplied,"
-  echo "the UUID is used for generating the password"
+  echo "If generating a password.  The MAC address is"
+  echo "preferred for generating the password, but the"
+  echo "UUID will be used if the MAC is not present."
   exit 1
 }
 ((ubonly=0))
@@ -48,7 +50,7 @@ usage() {
 ((debug=0))
 ((upwd=0))
 ((dryrun=0))
-while getopts ":cdfmnrs:u" opt; do
+while getopts ":cdfimnrs:u" opt; do
   case $opt in
     c)
       u-boot setenv mtsp
@@ -64,17 +66,29 @@ while getopts ":cdfmnrs:u" opt; do
         exit 0
       fi
       ;;
+    i)
+      ((useuuid=1))
+      if ! [[ -f "${MTS}/uuid" ]] ; then
+        echo "${MTS}/uuid not found.  Maybe mts-io driver is not loaded?"
+        exit 1
+      fi
+      uuid=$(cat "${MTS}/uuid")
+      if ((${#uuid} == 0)) ; then
+        echo "${MTS}/uuid must have a non-zero length value"
+        usage
+      fi
+      ;;
     m)
       ((usemac=1))
+      if ! [[ -f "${MTS}/mac-eth" ]] ; then
+        echo "${MTS}/mac-eth not found.  Maybe mts-io driver is not loaded?"
+        exit 1
+      fi
       mac=$(cat "${MTS}/mac-eth")
       if ((${#mac} == 0)) ; then
         echo "${MTS}/mac-eth must have a non-zero length value"
         usage
       fi
-      if ! [[ -f "${MTS}/mac-eth" ]] ; then
-        echo "${MTS}/mac-eth not found.  Maybe mts-io driver is not loaded?"
-        exit 1
-      fi
       ;;
     n)
       ((dryrun=1))
@@ -130,11 +144,37 @@ echo "salt: $salt"
 
 ((debug)) && echo upwd is $upwd
 ((debug)) && echo did length is ${#did}
+
+ if ((useuuid == 0)) && ((usemac == 0)) ; then
+    # Use MAC unless not present.
+    # This is because old code did this, and because
+     # UUID is not present in MTR and old Conduits.
+    ((usemac=1))
+    mac=$(cat "${MTS}/mac-eth")
+    if ((${#mac} == 0)) ; then
+        ((usemac=0))
+        # Check for UUID
+        ((useuuid=1))
+        uuid=$(cat "${MTS}/uuid")
+        if ((${#uuid} == 0)) ; then
+            echo "${MTS}/uuid or ${MTS}/mac-eth must have a non-zero length value"
+            usage
+        fi
+        if ! [[ -f "${MTS}/uuid" ]] ; then
+            echo "${MTS}/uuid not found.  Maybe mts-io driver is not loaded?"
+            exit 1
+        fi
+    fi
+fi
+
+
+
 if ((upwd == 0)) ; then
   if ! [[ -f "${MTS}/device-id" ]] ; then
     echo "${MTS}/device-id not found.  Maybe mts-io driver is not loaded?"
     exit 1
   fi
+
   did=$(cat "${MTS}/device-id")
 
   if ((${#did} == 0)) ; then
@@ -156,6 +196,8 @@ if ((upwd == 0)) ; then
   else
     pwdsrc="-d ${did} -m ${mac}"
   fi
+  
+  
   if ((debug)) ; then
     echo Try this:
     echo "/sbin/mts-hashpwd ${pwdsrc} ${salt}"
-- 
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