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1
17
18 package org.apache.james.imapserver.commands;
19
20 import org.apache.avalon.framework.logger.AbstractLogEnabled;
21 import org.apache.james.imapserver.AccessControlException;
22 import org.apache.james.util.Assert;
23 import org.apache.james.imapserver.*;
24
25 import java.util.StringTokenizer  ;
26 import java.util.List ;
27 import java.util.ArrayList ;
28 import java.util.Iterator ;
29
30
35
36 abstract class CommandTemplate
37 extends AbstractLogEnabled implements ImapCommand, ImapConstants
38 {
39 protected String commandName;
40 private List args = new ArrayList ();
41
42 protected String getCommand()
43 {
44 return this.commandName;
45 }
46
47
50 protected List getArgs()
51 {
52 return this.args;
53 }
54
55 protected String getExpectedMessage()
56 {
57 StringBuffer msg = new StringBuffer ( "<tag> " );
58 msg.append( getCommand() );
59
60 List args = getArgs();
61 for ( Iterator iter = args.iterator(); iter.hasNext(); ) {
62 msg.append( " " );
63 ImapArgument arg = (ImapArgument) iter.next();
64 msg.append( arg.format() );
65 }
66 return msg.toString();
67 }
68
69
72 public boolean process( ImapRequest request, ImapSession session )
73 {
74 StringTokenizer tokens = request.getCommandLine();
75
76 List args = getArgs();
77 List argValues = new ArrayList ();
78
79 System.out.println("CommandTemplate.process command: '"+getCommand()+"'");
80 for ( Iterator iter = args.iterator(); iter.hasNext(); ) {
81 System.out.println("CommandTemplate.process ARGUMENT");
82 Object o = iter.next();
83 ImapArgument arg = (ImapArgument) o;
84 try {
85 argValues.add( arg.parse( tokens ) );
86 }
87 catch ( Exception e ) {
88 String badMsg = e.getMessage() + ": Command should be " + getExpectedMessage();
89 session.badResponse( badMsg );
90 return true;
91 }
92 }
93
94 if ( tokens.hasMoreTokens() ) {
95 String badMsg = "Extra token found: Command should be " + getExpectedMessage();
96 session.badResponse( badMsg );
97 return true;
98 }
99 System.out.println("CommandTemplate.process starting doProcess");
100 return doProcess( request, session, argValues );
101
102 }
103
104 protected abstract boolean doProcess( ImapRequest request, ImapSession session, List argValues );
105
106
109 public boolean validForState( ImapSessionState state )
110 {
111 return true;
112 }
113
114 protected void logCommand( ImapRequest request, ImapSession session )
115 {
116 getLogger().debug( request.getCommand() + " command completed for " +
117 session.getRemoteHost() + "(" +
118 session.getRemoteIP() + ")" );
119 }
120
121 protected ACLMailbox getMailbox( ImapSession session, String mailboxName, String command )
122 {
123 if ( session.getState() == ImapSessionState.SELECTED && session.getCurrentFolder().equals( mailboxName ) ) {
124 return session.getCurrentMailbox();
125 }
126 else {
127 try {
128 return session.getImapHost().getMailbox( session.getCurrentUser(), mailboxName );
129 } catch ( MailboxException me ) {
130 if ( me.isRemote() ) {
131 session.noResponse( "[REFERRAL " + me.getRemoteServer() + "]" + SP + "Remote mailbox" );
132 } else {
133 session.noResponse( command, "Unknown mailbox" );
134 getLogger().info( "MailboxException in method getBox for user: "
135 + session.getCurrentUser() + " mailboxName: " + mailboxName + " was "
136 + me.getMessage() );
137 }
138 return null;
139 }
140 catch ( AccessControlException e ) {
141 session.noResponse( command, "Unknown mailbox" );
142 return null;
143 }
144 }
145 }
146
147
148 public static String readAstring( StringTokenizer tokens )
149 {
150 if ( ! tokens.hasMoreTokens() ) {
151 throw new RuntimeException ( "Not enough tokens" );
152 }
153 String token = tokens.nextToken();
154 Assert.isTrue( token.length() > 0 );
155
156 StringBuffer astring = new StringBuffer ( token );
157
158 if ( astring.charAt(0) == '\"' ) {
159 while ( astring.length() == 1 ||
160 astring.charAt( astring.length() - 1 ) != '\"' ) {
161 if ( tokens.hasMoreTokens() ) {
162 astring.append( tokens.nextToken() );
163 }
164 else {
165 throw new RuntimeException ( "Missing closing quote" );
166 }
167 }
168 astring.deleteCharAt( 0 );
169 astring.deleteCharAt( astring.length() - 1 );
170 }
171
172 return astring.toString();
173 }
174
175 public String decodeAstring( String rawAstring )
176 {
177
178 if ( rawAstring.length() == 0 ) {
179 return rawAstring;
180 }
181
182 if ( rawAstring.startsWith( "\"" ) ) {
183 if ( rawAstring.endsWith( "\"" ) ) {
185 if ( rawAstring.length() == 2 ) {
186 return new String (); }
188 else {
189 return rawAstring.substring( 1, rawAstring.length() - 1 );
190 }
191 }
192 else {
193 getLogger().error( "Quoted string with no closing quote." );
194 return null;
195 }
196 }
197 else {
198 return rawAstring;
200 }
201 }
202
203 public void setArgs( List args )
204 {
205 this.args = args;
206 }
207 }
208 |
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