Mercurial > 510Connectbot
annotate src/ch/ethz/ssh2/InteractiveCallback.java @ 339:cd1d87edcbf6 ganymed
fixed hang during connection, restore synchronized methods
| author | Carl Byington <carl@five-ten-sg.com> |
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| date | Thu, 31 Jul 2014 15:17:31 -0700 |
| parents | 071eccdff8ea |
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| rev | line source |
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1 /* |
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2 * Copyright (c) 2006-2011 Christian Plattner. All rights reserved. |
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3 * Please refer to the LICENSE.txt for licensing details. |
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4 */ |
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5 package ch.ethz.ssh2; |
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6 |
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7 /** |
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8 * An <code>InteractiveCallback</code> is used to respond to challenges sent |
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9 * by the server if authentication mode "keyboard-interactive" is selected. |
| 307 | 10 * |
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11 * @see Connection#authenticateWithKeyboardInteractive(String, |
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12 * String[], InteractiveCallback) |
| 307 | 13 * |
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14 * @author Christian Plattner |
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15 * @version 2.50, 03/15/10 |
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16 */ |
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17 |
| 307 | 18 public interface InteractiveCallback { |
| 19 /** | |
| 20 * This callback interface is used during a "keyboard-interactive" | |
| 21 * authentication. Every time the server sends a set of challenges (however, | |
| 22 * most often just one challenge at a time), this callback function will be | |
| 23 * called to give your application a chance to talk to the user and to | |
| 24 * determine the response(s). | |
| 25 * <p> | |
| 26 * Some copy-paste information from the standard: a command line interface | |
| 27 * (CLI) client SHOULD print the name and instruction (if non-empty), adding | |
| 28 * newlines. Then for each prompt in turn, the client SHOULD display the | |
| 29 * prompt and read the user input. The name and instruction fields MAY be | |
| 30 * empty strings, the client MUST be prepared to handle this correctly. The | |
| 31 * prompt field(s) MUST NOT be empty strings. | |
| 32 * <p> | |
| 33 * Please refer to draft-ietf-secsh-auth-kbdinteract-XX.txt for the details. | |
| 34 * <p> | |
| 35 * Note: clients SHOULD use control character filtering as discussed in | |
| 36 * RFC4251 to avoid attacks by including | |
| 37 * terminal control characters in the fields to be displayed. | |
| 38 * | |
| 39 * @param name | |
| 40 * the name String sent by the server. | |
| 41 * @param instruction | |
| 42 * the instruction String sent by the server. | |
| 43 * @param numPrompts | |
| 44 * number of prompts - may be zero (in this case, you should just | |
| 45 * return a String array of length zero). | |
| 46 * @param prompt | |
| 47 * an array (length <code>numPrompts</code>) of Strings | |
| 48 * @param echo | |
| 49 * an array (length <code>numPrompts</code>) of booleans. For | |
| 50 * each prompt, the corresponding echo field indicates whether or | |
| 51 * not the user input should be echoed as characters are typed. | |
| 52 * @return an array of reponses - the array size must match the parameter | |
| 53 * <code>numPrompts</code>. | |
| 54 */ | |
| 55 public String[] replyToChallenge(String name, String instruction, int numPrompts, String[] prompt, boolean[] echo) | |
| 56 throws Exception; | |
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57 } |