src/cli/database_command.rs

@@ -366,7 +366,7 @@ pub async fn edit_database_privileges(
     let privileges_to_change = if !args.privs.is_empty() {
         parse_privilege_tables_from_args(&args)?
     } else {
-        edit_privileges_with_editor(&privilege_data)?
+        edit_privileges_with_editor(&privilege_data, args.name.as_deref())?
     };
 
     let diffs = diff_privileges(&privilege_data, &privileges_to_change);
@@ -432,13 +432,14 @@ fn parse_privilege_tables_from_args(
 
 fn edit_privileges_with_editor(
     privilege_data: &[DatabasePrivilegeRow],
+    database_name: Option<&str>,
 ) -> anyhow::Result<Vec<DatabasePrivilegeRow>> {
     let unix_user = User::from_uid(getuid())
         .context("Failed to look up your UNIX username")
         .and_then(|u| u.ok_or(anyhow::anyhow!("Failed to look up your UNIX username")))?;
 
     let editor_content =
-        generate_editor_content_from_privilege_data(privilege_data, &unix_user.name);
+        generate_editor_content_from_privilege_data(privilege_data, &unix_user.name, database_name);
 
     // TODO: handle errors better here
     let result = Editor::new().extension("tsv").edit(&editor_content)?;

src/cli/user_command.rs

@@ -290,14 +290,14 @@ async fn show_users(
             "User",
             "Password is set",
             "Locked",
-            // "Databases where user has privileges"
+            "Databases where user has privileges"
         ]);
         for user in users {
             table.add_row(row![
                 user.user,
                 user.has_password,
                 user.is_locked,
-                // user.databases.join("\n")
+                user.databases.join("\n")
             ]);
         }
         table.printstd();

src/core/database_privileges.rs

@@ -157,9 +157,12 @@ const EDITOR_COMMENT: &str = r#"
 pub fn generate_editor_content_from_privilege_data(
     privilege_data: &[DatabasePrivilegeRow],
     unix_user: &str,
+    database_name: Option<&str>,
 ) -> String {
     let example_user = format!("{}_user", unix_user);
-    let example_db = format!("{}_db", unix_user);
+    let example_db = database_name
+        .unwrap_or(&format!("{}_db", unix_user))
+        .to_string();
 
     // NOTE: `.max()`` fails when the iterator is empty.
     //       In this case, we know that the only fields in the
@@ -539,7 +542,7 @@ pub fn display_privilege_diffs(diffs: &BTreeSet<DatabasePrivilegesDiff>) -> Stri
                 table.add_row(row![
                     p.db,
                     p.user,
-                    "(New user)\n".to_string() + &display_new_privileges_list(p)
+                    "(Previously unprivileged)\n".to_string() + &display_new_privileges_list(p)
                 ]);
             }
             DatabasePrivilegesDiff::Modified(p) => {
@@ -664,7 +667,7 @@ mod tests {
             },
         ];
 
-        let content = generate_editor_content_from_privilege_data(&permissions, "user");
+        let content = generate_editor_content_from_privilege_data(&permissions, "user", None);
 
         let parsed_permissions = parse_privilege_data_from_editor_content(content).unwrap();
 

src/core/protocol/server_responses.rs

@@ -95,8 +95,7 @@ impl OwnerValidationError {
                     .join("\n"),
             )
             .to_owned(),
-
-            _ => format!(
+            OwnerValidationError::StringEmpty => format!(
                 "'{}' is not a valid {} name.",
                 name,
                 db_or_user.lowercased()
@@ -113,12 +112,6 @@ pub enum OwnerValidationError {
 
     // The name is empty, which is invalid
     StringEmpty,
-
-    // The name is in the format "_<postfix>", which is invalid
-    MissingPrefix,
-
-    // The name is in the format "<prefix>_", which is invalid
-    MissingPostfix,
 }
 
 pub type CreateDatabasesOutput = BTreeMap<String, Result<(), CreateDatabaseError>>;

src/server/input_sanitization.rs

@@ -43,18 +43,14 @@ pub fn validate_ownership_by_prefixes(
         return Err(OwnerValidationError::StringEmpty);
     }
 
-    if name.starts_with('_') {
-        return Err(OwnerValidationError::MissingPrefix);
-    }
-
-    let (prefix, _) = match name.split_once('_') {
-        Some(pair) => pair,
-        None => return Err(OwnerValidationError::MissingPostfix),
-    };
-
-    if !prefixes.iter().any(|g| g == prefix) {
+    if prefixes
+        .iter()
+        .filter(|p| name.starts_with(*p))
+        .collect::<Vec<_>>()
+        .is_empty()
+    {
         return Err(OwnerValidationError::NoMatch);
-    }
+    };
 
     Ok(())
 }
@@ -115,24 +111,6 @@ mod tests {
             Err(OwnerValidationError::StringEmpty)
         );
 
-        assert_eq!(
-            validate_ownership_by_prefixes("user", &prefixes),
-            Err(OwnerValidationError::MissingPostfix)
-        );
-        assert_eq!(
-            validate_ownership_by_prefixes("something", &prefixes),
-            Err(OwnerValidationError::MissingPostfix)
-        );
-        assert_eq!(
-            validate_ownership_by_prefixes("user-testdb", &prefixes),
-            Err(OwnerValidationError::MissingPostfix)
-        );
-
-        assert_eq!(
-            validate_ownership_by_prefixes("_testdb", &prefixes),
-            Err(OwnerValidationError::MissingPrefix)
-        );
-
         assert_eq!(
             validate_ownership_by_prefixes("user_testdb", &prefixes),
             Ok(())

src/server/sql/user_operations.rs

@@ -1,4 +1,6 @@
+use itertools::Itertools;
 use std::collections::BTreeMap;
+use indoc::formatdoc;
 
 use serde::{Deserialize, Serialize};
 
@@ -20,6 +22,8 @@ use crate::{
     },
 };
 
+use super::database_privilege_operations::DATABASE_PRIVILEGE_FIELDS;
+
 // NOTE: this function is unsafe because it does no input validation.
 async fn unsafe_user_exists(
     db_user: &str,
@@ -309,6 +313,9 @@ pub struct DatabaseUser {
 
     #[sqlx(rename = "is_locked")]
     pub is_locked: bool,
+
+    #[sqlx(skip)]
+    pub databases: Vec<String>,
 }
 
 const DB_USER_SELECT_STATEMENT: &str = r#"
@@ -344,13 +351,17 @@ pub async fn list_database_users(
             continue;
         }
 
-        let result = sqlx::query_as::<_, DatabaseUser>(
+        let mut result = sqlx::query_as::<_, DatabaseUser>(
             &(DB_USER_SELECT_STATEMENT.to_string() + "WHERE `mysql`.`user`.`User` = ?"),
         )
         .bind(&db_user)
         .fetch_optional(&mut *connection)
         .await;
 
+        if let Ok(Some(user)) = result.as_mut() {
+            append_databases_where_user_has_privileges(user, &mut *connection).await;
+        }
+
         match result {
             Ok(Some(user)) => results.insert(db_user, Ok(user)),
             Ok(None) => results.insert(db_user, Err(ListUsersError::UserDoesNotExist)),
@@ -365,11 +376,50 @@ pub async fn list_all_database_users_for_unix_user(
     unix_user: &UnixUser,
     connection: &mut MySqlConnection,
 ) -> ListAllUsersOutput {
-    sqlx::query_as::<_, DatabaseUser>(
+    let mut result = sqlx::query_as::<_, DatabaseUser>(
         &(DB_USER_SELECT_STATEMENT.to_string() + "WHERE `mysql`.`user`.`User` REGEXP ?"),
     )
     .bind(create_user_group_matching_regex(unix_user))
-    .fetch_all(connection)
+    .fetch_all(&mut *connection)
     .await
-    .map_err(|err| ListAllUsersError::MySqlError(err.to_string()))
+    .map_err(|err| ListAllUsersError::MySqlError(err.to_string()));
+
+    if let Ok(users) = result.as_mut() {
+        for user in users {
+            append_databases_where_user_has_privileges(user, &mut *connection).await;
+        }
+    }
+
+    result
+}
+
+pub async fn append_databases_where_user_has_privileges(
+    database_user: &mut DatabaseUser,
+    connection: &mut MySqlConnection,
+) {
+    let database_list = sqlx::query(
+        formatdoc!(
+            r#"
+                SELECT `db` AS `database`
+                FROM `db`
+                WHERE `user` = ? AND ({})
+            "#,
+            DATABASE_PRIVILEGE_FIELDS
+                .iter()
+                .map(|field| format!("`{}` = 'Y'", field))
+                .join(" OR "),
+        )
+        .as_str(),
+    )
+    .bind(database_user.user.clone())
+    .fetch_all(&mut *connection)
+    .await;
+
+    database_user.databases = database_list
+        .map(|rows| {
+            rows.into_iter()
+                .map(|row| row.get::<String, _>("database"))
+                .collect()
+        })
+        .unwrap_or_default();
 }