omkar/mattermost-patched-enterprise
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Add exit code differentiation

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This commit is contained in:
WasserEsser
2026-04-30 12:53:43 +02:00
parent 4b6d18c26f
commit 19431a6601
1 changed files with 23 additions and 6 deletions
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patch.sh
+23 -6
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@@ -31,7 +31,24 @@ if [ ${#MISSING_DEPS[@]} -gt 0 ]; then
echo " - $dep" echo " - $dep"
done done
echo "Please install them and try again." echo "Please install them and try again."
exit 1 exit 2
fi
# Check binary file argument exists and is writable
if [ -z "$BINARY_FILE" ]; then
echo "Error: No binary file specified."
echo "Usage: $0 <binary_file>"
exit 3
fi
if [ ! -f "$BINARY_FILE" ]; then
echo "Error: File '$BINARY_FILE' does not exist."
exit 4
fi
if [ ! -w "$BINARY_FILE" ]; then
echo "Error: No write permission for '$BINARY_FILE'."
exit 5
fi fi
SEARCH_PATTERN=$(echo "$PATTERN" | tr -d ' ' | tr '?' '.' | tr 'A-Z' 'a-z') SEARCH_PATTERN=$(echo "$PATTERN" | tr -d ' ' | tr '?' '.' | tr 'A-Z' 'a-z')
@@ -65,7 +82,7 @@ echo "Searching for rsa.VerifyPKCS1v15 call inside LicenseValidatorImpl.Validate
PATCHED_COUNT=$(grep -Eo -b "$PATCHED_PATTERN" "$TEMP_FILE" 2>/dev/null | wc -l) PATCHED_COUNT=$(grep -Eo -b "$PATCHED_PATTERN" "$TEMP_FILE" 2>/dev/null | wc -l)
if [ "$PATCHED_COUNT" -gt 0 ]; then if [ "$PATCHED_COUNT" -gt 0 ]; then
echo "Binary appears to already be patched (jnz instruction found)." echo "Binary appears to already be patched (jnz instruction found)."
exit 1 exit 6
fi fi
MATCH_COUNT=$(grep -Eo -b "$SEARCH_PATTERN" "$TEMP_FILE" | wc -l) MATCH_COUNT=$(grep -Eo -b "$SEARCH_PATTERN" "$TEMP_FILE" | wc -l)
@@ -79,7 +96,7 @@ FOUND_OFFSET=$(grep -Eo -b "$SEARCH_PATTERN" "$TEMP_FILE" | awk -F: '{print $1}'
if [ -z "$FOUND_OFFSET" ]; then if [ -z "$FOUND_OFFSET" ]; then
echo "Call not found!" echo "Call not found!"
exit 1 exit 7
fi fi
BYTE_OFFSET=$((FOUND_OFFSET / 2 + OFFSET)) BYTE_OFFSET=$((FOUND_OFFSET / 2 + OFFSET))
@@ -87,21 +104,21 @@ BYTE_OFFSET_HEX=$(printf "%x" "$BYTE_OFFSET")
if [ "$BYTE_OFFSET" -lt 0 ]; then if [ "$BYTE_OFFSET" -lt 0 ]; then
echo "Error: Calculated offset is before the start of the file!" echo "Error: Calculated offset is before the start of the file!"
exit 1 exit 8
fi fi
echo "Call found, patching jz at offset 0x$BYTE_OFFSET_HEX with jnz" echo "Call found, patching jz at offset 0x$BYTE_OFFSET_HEX with jnz"
if ! printf "$REPLACEMENT" | xxd -r -p | dd of="$BINARY_FILE" bs=1 seek="$BYTE_OFFSET" conv=notrunc > /dev/null 2>&1; then if ! printf "$REPLACEMENT" | xxd -r -p | dd of="$BINARY_FILE" bs=1 seek="$BYTE_OFFSET" conv=notrunc > /dev/null 2>&1; then
echo "Error: Failed to write patch to '$BINARY_FILE'." echo "Error: Failed to write patch to '$BINARY_FILE'."
exit 1 exit 9
fi fi
# Verify the patch was applied # Verify the patch was applied
WRITTEN_BYTE=$(dd if="$BINARY_FILE" bs=1 skip="$BYTE_OFFSET" count=1 2>/dev/null | xxd -p) WRITTEN_BYTE=$(dd if="$BINARY_FILE" bs=1 skip="$BYTE_OFFSET" count=1 2>/dev/null | xxd -p)
if [ "$WRITTEN_BYTE" != "$REPLACEMENT" ]; then if [ "$WRITTEN_BYTE" != "$REPLACEMENT" ]; then
echo "Error: Patch verification failed! Expected '$REPLACEMENT' but found '$WRITTEN_BYTE' at offset 0x$BYTE_OFFSET_HEX." echo "Error: Patch verification failed! Expected '$REPLACEMENT' but found '$WRITTEN_BYTE' at offset 0x$BYTE_OFFSET_HEX."
exit 1 exit 10
fi fi
echo "Licensing code patched!" echo "Licensing code patched!"