michael-o commented on a change in pull request #428:
URL: https://github.com/apache/tomcat/pull/428#discussion_r655177819
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File path: java/org/apache/catalina/realm/DataSourceRealm.java
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@@ -539,6 +612,162 @@ private boolean isRoleStoreDefined() {
}
+ /**
+ * Return the specified user's requested user attributes as a map.
+ *
+ * @param dbConnection The database connection to be used
+ * @param username User name for which to return user attributes
+ *
+ * @return a map containing the specified user's requested user attributes
+ */
+ protected Map<String, Object> getUserAttributesMap(Connection
dbConnection, String username) {
+
+ String preparedAttributes = getUserAttributesStatement(dbConnection);
+ if (preparedAttributes == null || preparedAttributes ==
USER_ATTRIBUTES_NONE_REQUESTED) {
+ // The above reference comparison is intentional.
USER_ATTRIBUTES_NONE_REQUESTED
+ // is a tag object (empty String) to distinguish between null (not
yet
+ // initialized) and empty (no attributes requested).
+ // TODO Could as well be changed to `preparedAttributes.lenghth()
= 0`
+
+ // Return null if no user attributes are requested (or if the
statement was not
+ // yet built successfully)
+ return null;
+ }
+
+ try (PreparedStatement stmt =
dbConnection.prepareStatement(preparedAttributes)) {
+ stmt.setString(1, username);
+
+ try (ResultSet rs = stmt.executeQuery()) {
+
+ if (rs.next()) {
+ Map<String, Object> attrs = new LinkedHashMap<>();
+ ResultSetMetaData md = rs.getMetaData();
+ int ncols = md.getColumnCount();
+ for (int columnIndex = 1; columnIndex <= ncols;
columnIndex++) {
+ String columnName = md.getColumnName(columnIndex);
+ // Ignore case, database may have case-insensitive
field names
+ if (columnName.equalsIgnoreCase(userCredCol)) {
+ // Always skip userCredCol (must be there if all
columns
+ // have been requested)
+ continue;
+ }
+ attrs.put(columnName, rs.getObject(columnIndex));
+ }
+ return attrs.size() > 0 ? attrs : null;
Review comment:
> What other types of multi-valued attributes are you thinking of?
I haven't use SQL databases for any user store for the last 15 years, but
only Active Directory so I am used to multi-valued values.
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