70 lines
2.3 KiB
Bash
Executable file
70 lines
2.3 KiB
Bash
Executable file
#!/bin/bash
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#
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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#
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#
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# $Id$
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#
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# Prevents some SHA-1 collisions to be commited
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# Test fo the 320 byte prefix found on https://shattered.io/
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# If the files are committed in the same transaction, svnlook
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# will error out itself due to the apparent corruption in the
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# candidate revision
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REPOS="$1"
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TXN="$2"
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SVNLOOK=/usr/bin/svnlook
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YEAR=$(date +%Y)
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$SVNLOOK changed -t "$TXN" "$REPOS"
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if [ $? -ne 0 ]; then
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echo "svnlook failed, possible SHA-1 collision" >&2
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exit 2
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fi
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FILES=$($SVNLOOK changed -t "$TXN" "$REPOS" | grep -Ev '^D ' | /usr/bin/awk '{print $2}')
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for FILE in $FILES; do
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if [ -f $FILE ]; then
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# Check against known sha-1 collision attack. Someone committing 2 different files with this
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# known hash collision could otherwise break the repository.
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PREFIX=$($SVNLOOK cat -t "$TXN" "$REPOS" "$FILE" | head -c320 | /usr/bin/sha1sum | cut -c-40)
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if [ "$PREFIX" = 'f92d74e3874587aaf443d1db961d4e26dde13e9c' ]; then
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echo "known SHA-1 collision rejected" >&2
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exit 3
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fi
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# Verify copyright year
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if [[ $FILE == */ietf/*.py || -s $FILE ]]; then
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$SVNLOOK cat -t "$TXN" "$REPOS" "$FILE" | head -n 3 | grep -q "Copyright .*IETF Trust .*$YEAR.*" || {
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echo "
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Bad or missing copyright note in $FILE.
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Expected 'Copyright The IETF Trust ... $YEAR, All Rights Reserved',
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(or similar) at the start of the file.
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For bulk correction of copyright statements, try bin/check-copyright with
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patching:
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\$ bin/check-copyright -p \$(svn st | cut -c 9- | grep '\.py\$' ) | patch -p0
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" >&2
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exit 3
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}
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fi
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fi
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done
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