Initial import
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Paul Schneider
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364
NpgsqlMRPProviders/NpgsqlRoleProvider.cs
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364
NpgsqlMRPProviders/NpgsqlRoleProvider.cs
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using System;
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using System.Web.Security;
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using System.Configuration.Provider;
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using System.Configuration;
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using Npgsql;
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using System.Collections.Generic;
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/*
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*
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CREATE TABLE roles
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(
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rolename character varying(255) NOT NULL,
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applicationname character varying(255) NOT NULL,
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comment character varying(255) NOT NULL,
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CONSTRAINT roles_pkey PRIMARY KEY (rolename , applicationname )
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)
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WITH (
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OIDS=FALSE
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);
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CREATE TABLE usersroles
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(
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applicationname character varying(255) NOT NULL,
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rolename character varying(255) NOT NULL,
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username character varying(255) NOT NULL,
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CONSTRAINT attrroles_pkey PRIMARY KEY (applicationname , rolename , username ),
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CONSTRAINT usersroles_fk_role FOREIGN KEY (applicationname, rolename)
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REFERENCES roles (applicationname, rolename) MATCH SIMPLE
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ON UPDATE CASCADE ON DELETE CASCADE,
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CONSTRAINT usersroles_fk_user FOREIGN KEY (applicationname, username)
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REFERENCES users (applicationname, username) MATCH SIMPLE
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ON UPDATE CASCADE ON DELETE CASCADE
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)
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WITH (
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OIDS=FALSE
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);
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*/
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using System.Linq;
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namespace Npgsql.Web
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{
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public class NpgsqlRoleProvider: RoleProvider
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{
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protected string name = "NpgsqlRoleProvider";
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protected string connectionStringName = "pgProvider";
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protected string applicationName = "/";
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protected string connectionString = string.Empty;
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public override void Initialize (string iname, System.Collections.Specialized.NameValueCollection config)
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{
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try {
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name = iname ?? config ["name"];
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connectionStringName = config ["connectionStringName"] ?? connectionStringName;
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applicationName = config ["applicationName"] ?? applicationName;
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if (applicationName.Length > 250)
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throw new ProviderException ("The maximum length for an application name is 250 characters.");
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var cs = ConfigurationManager.ConnectionStrings [connectionStringName];
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if (cs == null || string.IsNullOrEmpty (cs.ConnectionString)) {
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throw new ProviderException (
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string.Format ("The role provider connection string, '{0}', is not defined.", connectionStringName));
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}
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connectionString = ConfigurationManager.ConnectionStrings [connectionStringName].ConnectionString;
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if (string.IsNullOrEmpty (connectionString))
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throw new ConfigurationErrorsException (
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string.Format (
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"The connection string for the given name ({0})" +
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"must be specified in the <connectionStrings>" +
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"configuration bloc. Aborting.", connectionStringName)
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);
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} catch (Exception ex) {
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var message = "Error initializing the role configuration settings";
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throw new ProviderException (message, ex);
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}
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}
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public override void AddUsersToRoles (string[] usernames, string[] roleNames)
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{
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if (usernames.Any (x => x == null) || roleNames.Any (x => x == null)) {
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throw new ArgumentNullException ();
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}
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if (usernames.Any (x => x.Trim () == string.Empty) || (roleNames.Any (x => x.Trim () == string.Empty))) {
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throw new ArgumentException ("One or more of the supplied usernames or role names are empty.");
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}
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using (var conn = new NpgsqlConnection(connectionString)) {
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conn.Open ();
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using (var comm = conn.CreateCommand()) {
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comm.CommandType = System.Data.CommandType.Text;
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comm.CommandText = "insert into usersroles (applicationname, username, rolename) values (@appname,@user,@role)";
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comm.Parameters.Add ("appname", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = applicationName;
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NpgsqlParameter pu = comm.Parameters.Add ("user", NpgsqlTypes.NpgsqlDbType.Varchar, 250);
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NpgsqlParameter pr = comm.Parameters.Add ("role", NpgsqlTypes.NpgsqlDbType.Varchar, 250);
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foreach (string u in usernames) {
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pu.Value = u;
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foreach (string r in roleNames) {
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pr.Value = r;
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comm.ExecuteNonQuery ();
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}
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}
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}
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}
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}
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public override string ApplicationName {
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get {
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return applicationName;
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}
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set {
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applicationName = value;
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}
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}
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public override void CreateRole (string roleName)
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{
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if (roleName == null)
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throw new ArgumentNullException ();
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if (roleName.Trim () == string.Empty)
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throw new ArgumentException ("A role name cannot be empty.");
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if (roleName.Contains (","))
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throw new ArgumentException ("A role name cannot contain commas. Blame Microsoft for that rule!");
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if (roleName.Length > 250)
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throw new ArgumentException ("The maximum length for a Role name is 250 characters.");
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using (var conn = new NpgsqlConnection(connectionString)) {
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conn.Open ();
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using (var comm = conn.CreateCommand()) {
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comm.CommandType = System.Data.CommandType.Text;
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comm.CommandText = "insert into roles (rolename, applicationname, comment) values (@rolename, @appname, @comment)";
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comm.Parameters.Add ("@rolename", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = roleName;
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comm.Parameters.Add ("@appname", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = applicationName;
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comm.Parameters.Add ("@comment", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = roleName;
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comm.ExecuteNonQuery ();
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}
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}
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}
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public override bool DeleteRole (string roleName, bool throwOnPopulatedRole)
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{
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if (roleName == null)
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throw new ArgumentNullException ();
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if (roleName.Trim () == string.Empty)
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throw new ArgumentException ("The specified role name cannot be empty.");
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if (throwOnPopulatedRole)
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if (FindUsersInRole (roleName, "").Count () > 0)
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throw new ProviderException (
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string.Format ("The role {0} is populated, we cannot delete it.", roleName));
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using (var conn = new NpgsqlConnection(connectionString)) {
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conn.Open ();
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using (var comm = conn.CreateCommand()) {
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comm.CommandType = System.Data.CommandType.Text;
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comm.CommandText = "delete from roles where rolename = @rolename and applicationname = @appname";
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comm.Parameters.Add ("@rolename", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = roleName;
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comm.Parameters.Add ("@appname", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = applicationName;
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comm.Parameters.Add ("@comment", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = roleName;
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comm.ExecuteNonQuery ();
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}
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}
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return true;
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}
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public override string[] FindUsersInRole (string roleName, string usernameToMatch)
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{
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return GetUsersInRole (roleName, usernameToMatch);
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}
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protected string[] GetUsersInRole (string rolename, string usernameToMatch)
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{
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if (rolename == null)
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throw new ArgumentNullException ();
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if (rolename == string.Empty)
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throw new ProviderException ("Cannot look for blank role names.");
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usernameToMatch = usernameToMatch ?? string.Empty;
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using (var conn = new NpgsqlConnection(connectionString)) {
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conn.Open ();
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using (var comm = conn.CreateCommand()) {
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comm.CommandType = System.Data.CommandType.Text;
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comm.CommandText = "select username from usersroles where applicationname = @appname " +
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"and rolename = @rolename and username like @username";
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comm.Parameters.Add ("@rolename", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = rolename;
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comm.Parameters.Add ("@appname", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = applicationName;
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comm.Parameters.Add ("@username", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = usernameToMatch;
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using (var reader = comm.ExecuteReader()) {
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var r = new List<string> ();
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var usernameColumn = reader.GetOrdinal ("username");
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while (reader.Read()) {
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r.Add (reader.GetString (usernameColumn));
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}
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return r.ToArray ();
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}
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}
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}
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}
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public override string[] GetAllRoles ()
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{
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using (var conn = new NpgsqlConnection(connectionString)) {
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conn.Open ();
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using (var comm = conn.CreateCommand()) {
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comm.CommandType = System.Data.CommandType.Text;
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comm.CommandText = "select rolename from roles where applicationname = @appname";
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comm.Parameters.Add ("@appname", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = applicationName;
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using (var reader = comm.ExecuteReader()) {
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var r = new List<string> ();
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var rolenameColumn = reader.GetOrdinal ("rolename");
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while (reader.Read()) {
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r.Add (reader.GetString (rolenameColumn));
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}
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return r.ToArray ();
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}
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}
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}
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}
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public override string[] GetRolesForUser (string username)
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{
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if (username == null)
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throw new ArgumentNullException ();
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if (username.Trim () == string.Empty)
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throw new ArgumentException ("The specified username cannot be blank.");
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using (var conn = new NpgsqlConnection(connectionString)) {
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conn.Open ();
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using (var comm = conn.CreateCommand()) {
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comm.CommandType = System.Data.CommandType.Text;
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comm.CommandText = "select rolename from usersroles where applicationname = @appname and username = @username";
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comm.Parameters.Add ("@username", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = username;
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comm.Parameters.Add ("@appname", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = applicationName;
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using (var reader = comm.ExecuteReader()) {
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var r = new List<string> ();
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var rolenameColumn = reader.GetOrdinal ("rolename");
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while (reader.Read()) {
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r.Add (reader.GetString (rolenameColumn));
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}
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return r.ToArray ();
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}
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}
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}
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}
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public override string[] GetUsersInRole (string roleName)
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{
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if (string.IsNullOrEmpty (roleName))
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throw new ArgumentException ("The specified role name cannot be blank or null");
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using (var conn = new NpgsqlConnection(connectionString)) {
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conn.Open ();
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using (var comm = conn.CreateCommand()) {
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//
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comm.CommandType = System.Data.CommandType.Text;
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comm.CommandText = "select username from usersroles where applicationname = @appname " +
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"and rolename = @rolename";
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comm.Parameters.Add ("@rolename", NpgsqlTypes.NpgsqlDbType.Varchar, 255).Value = roleName;
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comm.Parameters.Add ("@appname", NpgsqlTypes.NpgsqlDbType.Varchar, 255).Value = applicationName;
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using (var reader = comm.ExecuteReader()) {
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var r = new List<string> ();
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var usernameColumn = reader.GetOrdinal ("username");
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while (reader.Read()) {
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r.Add (reader.GetString (usernameColumn));
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}
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return r.ToArray ();
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}
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}
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}
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}
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public override bool IsUserInRole (string username, string roleName)
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{
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if (username == null || roleName == null)
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throw new ArgumentNullException ();
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if (username.Trim () == string.Empty)
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throw new ArgumentException ("The specified username cannot be blank.");
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if (roleName.Trim () == string.Empty)
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throw new ArgumentException ("The specified role name cannot be blank.");
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using (var conn = new NpgsqlConnection(connectionString)) {
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conn.Open ();
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using (var comm = conn.CreateCommand()) {
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//
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comm.CommandType = System.Data.CommandType.Text;
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comm.CommandText = "select count(*)>0 from usersroles where applicationname = @appname " +
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"and username = @username and rolename = @rolename";
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comm.Parameters.Add ("@username", username);
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comm.Parameters.Add ("@rolename", roleName);
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comm.Parameters.Add ("@appname", applicationName);
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var retval = (bool)comm.ExecuteScalar ();
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return retval;
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}
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}
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}
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public override void RemoveUsersFromRoles (string[] usernames, string[] roleNames)
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{
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if (usernames.Any (x => x == null) || roleNames.Any (x => x == null)) {
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throw new ArgumentNullException ();
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}
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if (usernames.Any (x => x.Trim () == string.Empty) || (roleNames.Any (x => x.Trim () == string.Empty))) {
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throw new ArgumentException ("One or more of the supplied usernames or role names are empty.");
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}
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using (var conn = new NpgsqlConnection(connectionString)) {
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conn.Open ();
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using (var comm = conn.CreateCommand()) {
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comm.CommandType = System.Data.CommandType.Text;
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comm.CommandText = "delete from usersroles where applicationname = @appname and " +
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"username = @username and rolename = @rolename";
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NpgsqlParameter pu = comm.Parameters.Add ("@username", NpgsqlTypes.NpgsqlDbType.Varchar, 250);
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NpgsqlParameter pr = comm.Parameters.Add ("@rolename", NpgsqlTypes.NpgsqlDbType.Varchar, 250);
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comm.Parameters.Add ("@appname", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = applicationName;
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foreach (string rolename in roleNames) {
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pr.Value = rolename;
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foreach (string username in usernames) {
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pu.Value = username;
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comm.ExecuteNonQuery ();
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}
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}
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}
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}
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}
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public override bool RoleExists (string roleName)
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{
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using (var conn = new NpgsqlConnection(connectionString)) {
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conn.Open ();
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using (var comm = new NpgsqlCommand("role_exists", conn)) {
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comm.CommandType = System.Data.CommandType.Text;
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comm.CommandText = "select Count(*)>0 from roles where applicationname = @applicationname and rolename = @rolename";
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comm.Parameters.Add ("@rolename", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = roleName;
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comm.Parameters.Add ("@applicationname", NpgsqlTypes.NpgsqlDbType.Varchar, 250).Value = applicationName;
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var retval = (bool)comm.ExecuteScalar ();
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return retval;
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}
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}
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}
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public override string Name {
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get {
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return name;
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}
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}
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public override string Description {
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get {
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return "PostgreSQL ASP.Net Role Provider class";
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}
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}
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}
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}
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