Signal-iOS/Scripts/schema_dump

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#!/usr/bin/env bash
set -e
BIN_NAME=$0
function usage() {
echo ""
echo "Usage:"
echo "$BIN_NAME [passphrase] [path-to-database]"
echo ""
echo " With no arguments, uses the currently booted siumlator. If not configured for external visibility, you'll be prompted for a password"
echo " With one argument, uses the currently booted simulator with the provided passphrase. No quotes please, just a hex string."
echo " With both arguments, uses the passphrase on the database at the provided path."
echo ""
echo "e.g. $BIN_NAME abcd0123cdef4567 /Home/Users/foo/Library/Simulator/blah/database/signal.sqlite"
}
if [[ $1 == '-h' || $1 == '--help' ]]
then
usage
exit 0
fi
DB_KEY=$1
DB_PATH=$2
PATH_ARG=""
KEY_ARG=""
if [[ $DB_PATH ]]
then
PATH_ARG="--path $DB_PATH"
fi
if [[ $DB_KEY ]]
then
KEY_ARG="--passphrase $DB_KEY"
fi
BASE_DIR=$(git rev-parse --show-toplevel)
cd $BASE_DIR
OUTPUT_FILE=SignalServiceKit/Resources/schema.sql
Scripts/sqlclient --quiet $PATH_ARG $KEY_ARG -- .schema | # Grab the schema
grep -v -e grdb_migrations -e sqlite_sequence | # Filter out oneline tables we don't care about
sed '1s/ok//' | # Filter out the "ok" message that sqlcipher prints for the passphrase PRAGMAs
bundle exec anbt-sql-formatter > $OUTPUT_FILE # Format it and write it to the file
if [ ${PIPESTATUS[0]} -eq 0 ]; then
echo "🌈 Successfully dumped schema to ${OUTPUT_FILE}"
else
cat << EOS
💥 Error while trying to dump the schema.
If you see an error like "Error: SQL logic error" the passphrase is most likely wrong.
EOS
fi