From 809939eb199a3c3a76d61ce57da9694f0dbac4b4 Mon Sep 17 00:00:00 2001
From: Petr Mládek <pmladek@suse.cz>
Date: Sep 21 2022 14:21:43 +0000
Subject: scripts: Add helper script to search commit presence in kernel-source


The helper can have various uses. Checking for CVE patches is on of the
existing use cases.

This version of the script relies on file with branches to check.
It will be modified to be interoperable with branches.conf.

---

diff --git a/scripts/check-kernel-commit b/scripts/check-kernel-commit
new file mode 100755
index 0000000..533402c
--- /dev/null
+++ b/scripts/check-kernel-commit
@@ -0,0 +1,137 @@
+#!/bin/bash
+
+usage()
+{
+    echo "Check whether a given list of commit is available in"
+    echo "a given list of branches."
+    echo
+    echo "Usage: ${0##*/} branches commit_hash..."
+    echo
+    echo "Parametes:"
+    echo "	branches: file with the list of branches to be checked"
+    echo "	commit_hash: hash of the commint to be found"
+}
+
+if [ $# -lt 2 ] ; then
+    usage
+    exit 1
+fi
+
+branches=$1
+shift;
+KBC_CHECK_HASHES="$*"
+
+if [ ! -f "$branches" ] ; then
+    "Error: Can't find the file with the list of branches: $branches"
+    exit 1
+fi
+
+check_branch()
+{
+    verbose=0
+    if [ $1 == "-v" ] ; then
+        verbose=1
+        shift
+    fi
+
+    branch="$1"
+    found=""
+    missing=""
+
+    for hash in $KBC_CHECK_HASHES ; do
+        git grep "$hash" "remotes/origin/$branch" >/dev/null 2>&1
+        if [ $? -eq 0 ] ; then
+            found="$found $hash"
+        else
+            missing="$missing $hash"
+        fi
+    done
+
+    # found
+    if [ -z "$missing" ] ; then
+        return 0
+    fi
+
+    # missing
+    if [ -z "$found" ] ; then
+        return 2
+    fi
+
+    # partly
+    if [ $verbose -ne 0 ] ; then
+        echo "        missing hash:"
+        for hash in $missing ; do
+            echo "                $hash"
+        done
+        echo
+    fi
+    return 1
+}
+
+check_parents()
+{
+    last_branch=""
+    for branch in "$@" ; do
+        check_branch $branch
+        case $? in
+            0)
+                echo "    (found in $branch)"
+                return
+                ;;
+            1)
+                echo "    (partly in $branch)"
+                return
+                ;;
+            *)
+                ;;
+        esac
+        last_branch="$branch"
+    done
+
+    # not found anywhere
+    echo "    (not even in $last_branch)"
+}
+
+print_branch()
+{
+    branch="$1"
+    echo -n "$branch"
+
+    len=`echo $branch| wc -c`
+    spaces=$((24 - $len))
+    while [ $spaces -gt 0 ] ; do
+        echo -n " "
+        spaces=$(($spaces - 1))
+    done
+}
+
+while read line ; do
+    line=${line%%\#*}
+    branch=${line%% *}
+    parents=${line#$branch}
+    # always check also the _EMBARGO branch as a possible parent
+    parents="${branch}_EMBARGO $parents"
+
+    # empty line or comment
+    if [ -z "$branch" ] ; then
+       continue
+    fi
+
+    print_branch "$branch"
+    check_branch "$branch"
+
+    case $? in
+        0)
+            echo "<ok>"
+            ;;
+        1)
+            echo -n "<partly> "
+            check_parents $parents
+            # print missing commits
+            check_branch -v "$branch"
+            ;;
+        *)
+            echo -n "<missing>"
+            check_parents "${branch}_EMBARGO" $parents 
+    esac
+done < "$branches"