mike-jumper commented on code in PR #940:
URL: https://github.com/apache/guacamole-client/pull/940#discussion_r1447754828


##########
guacamole-docker/bin/check_database.sh:
##########
@@ -0,0 +1,101 @@
+#!/bin/bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+# Setting up  mysql database if not exists
+
+if [ "$SLEEP_SHORT" == "" ]; then
+       SLEEP_SHORT=5
+fi
+
+if [ "$SLEEP_LONG" == "" ]; then
+       SLEEP_LONG=10
+fi
+
+if [ "$RETRIES" == "" ]; then
+       RETRIES=5
+fi
+
+if [[ "$MYSQL_USER" != "" && "$MYSQL_PASSWORD" != "" && "$MYSQL_DATABASE" != 
"" && "$MYSQL_HOSTNAME" != "" ]]; then
+       
+       if [ "$MYSQL_PORT" == "" ]; then
+               DB_PORT=3306;
+       else
+               DB_PORT=$MYSQL_PORT;
+       fi
+       
+       DB_HOST=$MYSQL_HOSTNAME;
+       DB_NAME=$MYSQL_DATABASE;
+       DB_USER=$MYSQL_USER;
+       DB_PASSWORD=$MYSQL_PASSWORD;
+       DB_ENGINE="/usr/bin/mariadb"
+       
+       
+       UUID=$(openssl rand -hex 16)
+       SALT=$(echo 
${UUID:0:8}-${UUID:8:4}-${UUID:12:4}-${UUID:16:4}-${UUID:20:12} | openssl 
sha256 -hex | awk '{print toupper($2)}');
+       HASH=$(echo -n "$ADMIN_PASSWORD$SALT" | openssl sha256 -hex | awk 
'{print toupper($2)}')
+       cp /opt/guacamole/mysql/schema/*.sql /tmp/
+       sed -i "s/guacadmin/$ADMIN_NAME/g" /tmp/002-create-admin-user.sql 
+       sed -i 
"s/FE24ADC5E11E2B25288D1704ABE67A79E342ECC26064CE69C5B3177795A82264/$SALT/" 
/tmp/002-create-admin-user.sql 
+       sed -i 
"s/CA458A7D494E3BE824F5E1E175A1556C0F8EEF2C2D7DF3633BEC4A29C4411960/$HASH/" 
/tmp/002-create-admin-user.sql 

Review Comment:
   This would need to be implemented for each supported database, not just 
MySQL/MariaDB.



##########
guacamole-docker/bin/check_database.sh:
##########
@@ -0,0 +1,101 @@
+#!/bin/bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+# Setting up  mysql database if not exists
+
+if [ "$SLEEP_SHORT" == "" ]; then
+       SLEEP_SHORT=5
+fi
+
+if [ "$SLEEP_LONG" == "" ]; then
+       SLEEP_LONG=10
+fi
+
+if [ "$RETRIES" == "" ]; then
+       RETRIES=5
+fi
+
+if [[ "$MYSQL_USER" != "" && "$MYSQL_PASSWORD" != "" && "$MYSQL_DATABASE" != 
"" && "$MYSQL_HOSTNAME" != "" ]]; then
+       
+       if [ "$MYSQL_PORT" == "" ]; then
+               DB_PORT=3306;
+       else
+               DB_PORT=$MYSQL_PORT;
+       fi
+       
+       DB_HOST=$MYSQL_HOSTNAME;
+       DB_NAME=$MYSQL_DATABASE;
+       DB_USER=$MYSQL_USER;
+       DB_PASSWORD=$MYSQL_PASSWORD;
+       DB_ENGINE="/usr/bin/mariadb"
+       
+       
+       UUID=$(openssl rand -hex 16)
+       SALT=$(echo 
${UUID:0:8}-${UUID:8:4}-${UUID:12:4}-${UUID:16:4}-${UUID:20:12} | openssl 
sha256 -hex | awk '{print toupper($2)}');
+       HASH=$(echo -n "$ADMIN_PASSWORD$SALT" | openssl sha256 -hex | awk 
'{print toupper($2)}')
+       cp /opt/guacamole/mysql/schema/*.sql /tmp/
+       sed -i "s/guacadmin/$ADMIN_NAME/g" /tmp/002-create-admin-user.sql 
+       sed -i 
"s/FE24ADC5E11E2B25288D1704ABE67A79E342ECC26064CE69C5B3177795A82264/$SALT/" 
/tmp/002-create-admin-user.sql 
+       sed -i 
"s/CA458A7D494E3BE824F5E1E175A1556C0F8EEF2C2D7DF3633BEC4A29C4411960/$HASH/" 
/tmp/002-create-admin-user.sql 
+
+
+       # Check database access
+       for retries in $(seq 0 $((RETRIES+ 1))); do
+                 RESPONSE=$(echo "exit" | timeout $SLEEP_SHORT telnet $DB_HOST 
$DB_PORT|grep Connected);
+                 echo "RESPONSE: $RESPONSE";
+                 if [ "$RESPONSE" == "" ]; then 
+                     if [[ $retries -le $RETRIES ]] ; then
+                         echo "Retired $retries";
+                         echo "Expected $DB_HOST currently not available, wait 
$SLEEP_SHORT seconds.";
+                         sleep $SLEEP_SHORT;
+                     else
+                         for retries2 in $(seq 0 $((RETRIES+ 1))); do
+                           RESPONSE=$(echo "exit" | timeout $SLEEP_SHORT 
telnet $DB_HOST $DB_PORT|grep Connected);
+                             if [ "$RESPONSE" == "" ]; then 
+                                 if [[ $retries2 -le $RETRIES ]] ; then
+                                     echo "Retired $retries2";
+                                     echo "Expected $DB_HOST currently not 
available, wait $SLEEP_LONG seconds.";
+                                     sleep $SLEEP_LONG;
+                                 else
+                                     echo "Expected $DB_HOST currently not 
available, and reached all reries limit, exiting";
+                                     exit 1; 
+                                 fi
+                             else
+                                 echo "Expected $DB_HOST accessed successfuly, 
continue database init processes."
+                                 break;
+                             fi  
+                         done 
+                     fi
+                 else
+                     echo "Expected $DB_HOST accessed successfuly, continue 
database init processes."
+                     break;
+                 fi
+       done

Review Comment:
   1. The logic here feels overcomplicated for what it is intended to achieve 
(wait for the database to come up). Why so many nested loops and layers of 
retrying?
   2. I'm on the fence on building this functionality into the Docker image. 
Perhaps adding automatic initialization into the database support within the 
webapp itself would make more sense? That would also allow for automatic 
application of schema updates while maintaining separation of concerns.



##########
guacamole-docker/bin/check_database.sh:
##########
@@ -0,0 +1,101 @@
+#!/bin/bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+# Setting up  mysql database if not exists
+
+if [ "$SLEEP_SHORT" == "" ]; then
+       SLEEP_SHORT=5
+fi
+
+if [ "$SLEEP_LONG" == "" ]; then
+       SLEEP_LONG=10
+fi
+
+if [ "$RETRIES" == "" ]; then
+       RETRIES=5
+fi
+
+if [[ "$MYSQL_USER" != "" && "$MYSQL_PASSWORD" != "" && "$MYSQL_DATABASE" != 
"" && "$MYSQL_HOSTNAME" != "" ]]; then
+       
+       if [ "$MYSQL_PORT" == "" ]; then
+               DB_PORT=3306;
+       else
+               DB_PORT=$MYSQL_PORT;
+       fi
+       
+       DB_HOST=$MYSQL_HOSTNAME;
+       DB_NAME=$MYSQL_DATABASE;
+       DB_USER=$MYSQL_USER;
+       DB_PASSWORD=$MYSQL_PASSWORD;
+       DB_ENGINE="/usr/bin/mariadb"
+       
+       
+       UUID=$(openssl rand -hex 16)
+       SALT=$(echo 
${UUID:0:8}-${UUID:8:4}-${UUID:12:4}-${UUID:16:4}-${UUID:20:12} | openssl 
sha256 -hex | awk '{print toupper($2)}');
+       HASH=$(echo -n "$ADMIN_PASSWORD$SALT" | openssl sha256 -hex | awk 
'{print toupper($2)}')
+       cp /opt/guacamole/mysql/schema/*.sql /tmp/
+       sed -i "s/guacadmin/$ADMIN_NAME/g" /tmp/002-create-admin-user.sql 
+       sed -i 
"s/FE24ADC5E11E2B25288D1704ABE67A79E342ECC26064CE69C5B3177795A82264/$SALT/" 
/tmp/002-create-admin-user.sql 
+       sed -i 
"s/CA458A7D494E3BE824F5E1E175A1556C0F8EEF2C2D7DF3633BEC4A29C4411960/$HASH/" 
/tmp/002-create-admin-user.sql 
+
+
+       # Check database access
+       for retries in $(seq 0 $((RETRIES+ 1))); do
+                 RESPONSE=$(echo "exit" | timeout $SLEEP_SHORT telnet $DB_HOST 
$DB_PORT|grep Connected);
+                 echo "RESPONSE: $RESPONSE";
+                 if [ "$RESPONSE" == "" ]; then 
+                     if [[ $retries -le $RETRIES ]] ; then
+                         echo "Retired $retries";

Review Comment:
   What do you mean by "retired"?



##########
Dockerfile.alpine:
##########


Review Comment:
   Why a second Dockerfile vs. modifying the existing Dockerfile?



##########
guacamole-docker/bin/check_database.sh:
##########
@@ -0,0 +1,101 @@
+#!/bin/bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+# Setting up  mysql database if not exists
+
+if [ "$SLEEP_SHORT" == "" ]; then
+       SLEEP_SHORT=5
+fi
+
+if [ "$SLEEP_LONG" == "" ]; then
+       SLEEP_LONG=10
+fi
+
+if [ "$RETRIES" == "" ]; then
+       RETRIES=5
+fi

Review Comment:
   If new environment variables are to be supported by this image, the naming 
should be more specific. `SLEEP_SHORT`, `SLEEP_LONG`, and `RETRIES` are too 
broad.



##########
guacamole-docker/bin/start.sh:
##########
@@ -562,11 +562,11 @@ END
 
     set_optional_property                  \
         "sqlserver-auto-create-accounts"  \
-        "$SQLSERVER_AUTO_CREATE_ACCOUNTS"
+        "$SQLSERVERQL_AUTO_CREATE_ACCOUNTS"
 
     set_optional_property      \
         "sqlserver-instance"  \
-        "$SQLSERVER_INSTANCE"
+        "$SQLSERVERQL_INSTANCE"

Review Comment:
   Why were these renamed?



##########
guacamole-docker/bin/check_database.sh:
##########
@@ -0,0 +1,101 @@
+#!/bin/bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+# Setting up  mysql database if not exists
+
+if [ "$SLEEP_SHORT" == "" ]; then
+       SLEEP_SHORT=5
+fi
+
+if [ "$SLEEP_LONG" == "" ]; then
+       SLEEP_LONG=10
+fi
+
+if [ "$RETRIES" == "" ]; then
+       RETRIES=5
+fi
+
+if [[ "$MYSQL_USER" != "" && "$MYSQL_PASSWORD" != "" && "$MYSQL_DATABASE" != 
"" && "$MYSQL_HOSTNAME" != "" ]]; then
+       
+       if [ "$MYSQL_PORT" == "" ]; then
+               DB_PORT=3306;
+       else
+               DB_PORT=$MYSQL_PORT;
+       fi
+       
+       DB_HOST=$MYSQL_HOSTNAME;
+       DB_NAME=$MYSQL_DATABASE;
+       DB_USER=$MYSQL_USER;
+       DB_PASSWORD=$MYSQL_PASSWORD;
+       DB_ENGINE="/usr/bin/mariadb"
+       
+       
+       UUID=$(openssl rand -hex 16)
+       SALT=$(echo 
${UUID:0:8}-${UUID:8:4}-${UUID:12:4}-${UUID:16:4}-${UUID:20:12} | openssl 
sha256 -hex | awk '{print toupper($2)}');
+       HASH=$(echo -n "$ADMIN_PASSWORD$SALT" | openssl sha256 -hex | awk 
'{print toupper($2)}')
+       cp /opt/guacamole/mysql/schema/*.sql /tmp/
+       sed -i "s/guacadmin/$ADMIN_NAME/g" /tmp/002-create-admin-user.sql 
+       sed -i 
"s/FE24ADC5E11E2B25288D1704ABE67A79E342ECC26064CE69C5B3177795A82264/$SALT/" 
/tmp/002-create-admin-user.sql 
+       sed -i 
"s/CA458A7D494E3BE824F5E1E175A1556C0F8EEF2C2D7DF3633BEC4A29C4411960/$HASH/" 
/tmp/002-create-admin-user.sql 
+
+
+       # Check database access
+       for retries in $(seq 0 $((RETRIES+ 1))); do
+                 RESPONSE=$(echo "exit" | timeout $SLEEP_SHORT telnet $DB_HOST 
$DB_PORT|grep Connected);
+                 echo "RESPONSE: $RESPONSE";
+                 if [ "$RESPONSE" == "" ]; then 
+                     if [[ $retries -le $RETRIES ]] ; then
+                         echo "Retired $retries";
+                         echo "Expected $DB_HOST currently not available, wait 
$SLEEP_SHORT seconds.";
+                         sleep $SLEEP_SHORT;
+                     else
+                         for retries2 in $(seq 0 $((RETRIES+ 1))); do
+                           RESPONSE=$(echo "exit" | timeout $SLEEP_SHORT 
telnet $DB_HOST $DB_PORT|grep Connected);
+                             if [ "$RESPONSE" == "" ]; then 
+                                 if [[ $retries2 -le $RETRIES ]] ; then
+                                     echo "Retired $retries2";
+                                     echo "Expected $DB_HOST currently not 
available, wait $SLEEP_LONG seconds.";
+                                     sleep $SLEEP_LONG;
+                                 else
+                                     echo "Expected $DB_HOST currently not 
available, and reached all reries limit, exiting";
+                                     exit 1; 
+                                 fi
+                             else
+                                 echo "Expected $DB_HOST accessed successfuly, 
continue database init processes."
+                                 break;
+                             fi  
+                         done 
+                     fi
+                 else
+                     echo "Expected $DB_HOST accessed successfuly, continue 
database init processes."
+                     break;
+                 fi
+       done
+
+       for i in $(ls /tmp/*.sql); do 
+               CREATE_DATABASE=$($DB_ENGINE -u $DB_USER -p$DB_PASSWORD 
$DB_NAME -h $DB_HOST --port $DB_PORT < $i);
+               if [[ "$(echo $?)" == "1" ]]; then
+                       echo "Database already exists";
+                       exit 2;                
+               else
+                       echo "Database automaticaly initialized." ;
+               fi
+       done

Review Comment:
   This is dangerous. Should a user ever manage to write a file to `/tmp` with 
a `.sql` extension, that file would be automatically run at subsequent startup 
as a privileged database user. Merely writing files to `/tmp` is not a 
privileged operation, so this would be privilege escalation.



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