fix makemysql so that easywp might work (#154)

This commit consists 18 commits in total, earliest one dating back to May 2020, intended to fix chain reactions caused by #129.
This commit:
1. Changed `makemysql-real`, allowing it to output only the password and nothing else if a specific argument is given
2. Changed `makemysql`, allowing it to correctly fetch password printed by `makemysql-real`, allowing it to be silent if no wordpress installation is found, allowing it to not change wordpress password if a specific argument is given, and allowing it to output only the password and nothing else if a specific argument is given.
3. Changed `easywp` so that it is compatible with the updated `makemysql`.
Hopefully, this will not break ocf infra.

18 commits:
* rewrote so that it might work
* idk wat autopep8 changed/suggested i followed its advice
* forgot to add the messages
* Added argument parsing and non-human-friendly output
* Squashed two commits
redirected some stuff to stderr
fix stupid mistakes for makemysql-real
* updated all three scripts so that they support some silent arguments and make things fancy but they might not work as I didn't test it
* fix stupid bugs made in 3cac9d4
* fix pre-commit problem made in 3cac9d4
* Wrapper for if silent
* Fixed a stupid logical mistake and added some stuff in bash scripts; did not run pre commit yet
* Applied @kpengboy's suggestions
1. Changed --silent to --quiet
2. Disable `set -e` at places where error-handling exists
3. Added some more instructions
4. Removed some redundant stuff, but idk if this will blow stuff up
* Bug: if quite is specified, do not ask if user wants to proceed.
* Indentation Errors
* Fix, silent should be global variable
* Fixed some bugs in easywp
* fix comment
* fix so precommit pass
* more to squash

makeservices/easywp

@@ -57,11 +57,18 @@ fi
 
 # Get SQL password
 echo "Resetting database password..."
-sqlpass=$(echo "yes" | makemysql | tail -n 1 | grep -Po '(?<=: )([0-9a-zA-Z]){24,}$')
-if [[ -z "$sqlpass" ]]; then
+# Do not exit immediately if makemysql fails, as we need to display some error message...
+set +e
+sqlpass=$(makemysql --quiet)
+# I don't know if this will work... Just make sure no abnormal exit code first!
+if [ $? ] || [[ -z "$sqlpass" ]]; then
     echo -e "\\033[31mError:\\033[00m Could not retrieve database password. Run makemysql to see the issue."
     exit 1
 fi
+# Only have the aforementioned behaviour when running makemysql
+# Note also technically if should be below this set statement
+# but set messes up with $? as well...
+set -e
 echo "SQL set up and the password can be found in wp-config.php ..."
 
 # Install WordPress and create config file

makeservices/makemysql

@@ -4,8 +4,52 @@ if [[ "$(hostname)" != "tsunami" && "$(hostname)" != "dev-tsunami" ]]; then
     exit 1
 fi
 
-PASS=$(sudo -u mysql /opt/share/utils/makeservices/makemysql-real | tee /dev/tty | tail -n 1 | grep -Po '(?<=: )([0-9a-zA-Z]){24,}$')
+IGNORE_WP=false
+QUIET=false
 
-echo 'Changing WordPress database password'
-cd ~/public_html/
-wp config set DB_PASSWORD "$PASS" > /dev/null
+# Parse arguments down below
+while (( "$#" )); do
+    case "$1" in
+        -i|--ignore-wp)
+            IGNORE_WP=true
+            shift
+            ;;
+        -q|--quiet)
+            QUIET=true
+            shift
+            ;;
+        -*)
+            # Output to stderr
+            echo "Error: Unsupported flag $1" >&2
+            exit 1
+            ;;
+    esac
+done
+
+# The correctness of this line relies on the fact that
+# makemysql-real will output the new password ONLY on the
+# last line. The --quiet will also make sure it only output the password...
+PASS=$(sudo -u mysql /opt/share/utils/makeservices/makemysql-real --quiet)
+
+if [ $? ] ; then
+    echo 'makemysql-real did not exit properly.'
+    echo 'Run "sudo -u mysql /opt/share/utils/makeservices/makemysql-real" for a more verbose output.'
+    echo 'Additionally, you may contact staff members for help. This script will stop.'
+    exit 1
+fi
+
+# Check if wp is installed, wp-cli cannot be used as it verifies DB password as well
+# And change password if installed with easywp
+# Use --ignore-wp flag to skip this process
+if ! $IGNORE_WP && [ -f "$HOME/public_html/wp-config.php" ] ; then
+    if ! $QUIET; then
+        echo "WordPress installation detected, changing WordPress mysql password for you."
+    fi
+    wp config set DB_PASSWORD "$PASS" --path="$HOME/public_html" > /dev/null 2>&1
+fi
+
+if $QUIET; then
+    echo "$PASS"
+else
+    echo "Your MySQL database password is: $PASS"
+fi

makeservices/makemysql-real

@@ -36,6 +36,8 @@ MYSQL_HOST = 'mysql.ocf.berkeley.edu'
 
 PW_LENGTH = 24
 
+quiet = False
+
 
 def read_config():
     """Fetches the MySQL hostname and root password from the config in
@@ -47,6 +49,11 @@ def read_config():
     return mysql_host, mysql_root_pw
 
 
+def print_if_not_quiet(*args, **kwargs):
+    if not quiet:
+        print(*args, **kwargs)
+
+
 def intro_prompt():
     print(dedent(
         """
@@ -69,6 +76,8 @@ def intro_prompt():
 
 
 def main():
+    # Without this quiet below will be local variable
+    global quiet
     try:
         username = os.environ.get('SUDO_USER')
 
@@ -78,43 +87,45 @@ def main():
         # Read config file.
         mysql_host, mysql_root_pw = read_config()
 
+        # Added a simple and stupid argument parsing so that other scripts can use it without tunneling in yes.
+        if len(sys.argv) > 1 and sys.argv[1] in ['-q', '--quiet']:
+            quiet = True
         # Check whether the script should proceed.
-        if not intro_prompt():
-            print('>>> Aborted by user request.')
-            return
-
+        if not quiet:
+            if not intro_prompt():
+                print_if_not_quiet('>>> Aborted by user request.', file=sys.stderr)
+                return
         # Connect to the MySQL server.
         try:
-            print('>>> Connecting to MySQL database server...')
+            print_if_not_quiet('>>> Connecting to MySQL database server...')
             connection = MySQLdb.connect(host=mysql_host,
                                          user='root',
                                          passwd=mysql_root_pw)
         except MySQLdb.MySQLError:
-            print('>>> Error: Failed to connect to MySQL server.')
-            raise
+            raise ConnectionError('>>> Error: Failed to connect to MySQL server.')
 
         # Check if the database already exists.
         try:
-            print(">>> Checking if database '{}' already exists...".format(username))
+            print_if_not_quiet(">>> Checking if database '{}' already exists...".format(username))
             connection.select_db(username)
 
             # The database already exists, so skip the creation step.
-            print('yes.')
+            print_if_not_quiet('yes.')
             db_create = False
-            print(dedent("""
-            The MySQL database '{}' already exists.
-            The database password will be reset.
+            print_if_not_quiet(dedent("""
+                The MySQL database '{}' already exists.
+                The database password will be reset.
 
-            If you are unsure how to access or use your database, please visit
+                If you are unsure how to access or use your database, please visit
 
-              https://www.ocf.berkeley.edu/docs/services/mysql/
+                https://www.ocf.berkeley.edu/docs/services/mysql/
 
-            If you run into trouble trying to use your database, contact us at
+                If you run into trouble trying to use your database, contact us at
 
-                [email protected]
-            """).format(username))
+                    [email protected]
+                """).format(username))
         except MySQLdb.OperationalError:
-            print('no.')
+            print_if_not_quiet('no.')
             db_create = True
 
         # Add or update user database privileges.
@@ -128,37 +139,39 @@ def main():
             # Result should be "Query OK, 0 rows affected",
             # but we'll assume no exception means success.
         except MySQLdb.MySQLError:
-            print('>>> Error: Failed to grant database privileges.')
-            raise
+            raise ConnectionError('>>> Error: Failed to grant database privileges.')
 
         # Create new database, if necessary.
         if db_create:
             try:
-                print(">>> Creating new database '{}'...".format(username))
+                print_if_not_quiet(">>> Creating new database '{}'...".format(username))
                 query = CREATE_QUERY.format(username)
                 connection.query(query)
                 connection.store_result()
                 # Result should be "Query OK, 1 row affected",
                 # but we'll assume no exception means success.
             except MySQLdb.MySQLError:
-                print('>>> Error: Failed to create database.')
-                raise
+                raise IOError('>>> Error: Failed to create database.')
 
         # Database is ready for use.
         if db_create:
-            print(dedent("""
-            Your MySQL database has been created.
+            print_if_not_quiet(dedent("""
+                Your MySQL database has been created.
+
+                For instructions on accessing and using your database, please visit
 
-            For instructions on accessing and using your database, please visit
+                https://www.ocf.berkeley.edu/docs/services/mysql/
 
-              https://www.ocf.berkeley.edu/docs/services/mysql/
+                If you run into trouble trying to use your database, contact us at
 
-            If you run into trouble trying to use your database, contact us at
+                    [email protected]
+                """))
 
-                [email protected]
-            """))
+        print_if_not_quiet('>>> Your MySQL database password is: ')
 
-        print('>>> Your MySQL database password is: {}'.format(userpass))
+        # This line to be printed, no matter quiet or not.
+        # The userpass will always be on the last line.
+        print(userpass)
     except Exception as ex:
         send_problem_report(dedent(
             """\
@@ -171,8 +184,9 @@ def main():
             """
             A fatal error was encountered during program execution.
             OCF staff have been notified of the problem.
-            """
-        ))
+            Error for staff: {}: {}.
+            """.format(ex.__class__.__name__, ex)
+        ), file=sys.stderr)
         sys.exit(1)