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annotate src/ch/ethz/ssh2/sftp/AttribBits.java @ 435:9c6a269fabb5 stable-1.9.2

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add bitcoin donation address
author Carl Byington <carl@five-ten-sg.com>
date Thu, 09 Apr 2015 11:32:38 -0700
parents 91a31873c42a
children
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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.sftp;
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6
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7 /**
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8 * SFTP Attribute Bits for the "attrib-bits" and "attrib-bits-valid" fields
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9 * of the SFTP ATTR data type.
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10 * <p/>
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11 * Yes, these are the "attrib-bits", even though they have "_FLAGS_" in
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12 * their name. Don't ask - I did not invent it.
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13 * <p/>
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14 * "<i>These fields, taken together, reflect various attributes of the file
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15 * or directory, on the server. Bits not set in 'attrib-bits-valid' MUST be
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16 * ignored in the 'attrib-bits' field. This allows both the server and the
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17 * client to communicate only the bits it knows about without inadvertently
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18 * twiddling bits they don't understand.</i>"
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19 *
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20 * @author Christian Plattner
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21 * @version 2.50, 03/15/10
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22 */
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23 public final class AttribBits {
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24
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25 private AttribBits() {
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26 }
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27
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28 /**
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29 * Advisory, read-only bit. This bit is not part of the access
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30 * control information on the file, but is rather an advisory field
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31 * indicating that the file should not be written.
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32 */
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33 public static final int SSH_FILEXFER_ATTR_FLAGS_READONLY = 0x00000001;
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34
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35 /**
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36 * The file is part of the operating system.
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37 */
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38 public static final int SSH_FILEXFER_ATTR_FLAGS_SYSTEM = 0x00000002;
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39
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40 /**
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41 * File SHOULD NOT be shown to user unless specifically requested.
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42 * For example, most UNIX systems SHOULD set this bit if the filename
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43 * begins with a 'period'. This bit may be read-only (see section 5.4 of
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44 * the SFTP standard draft). Most UNIX systems will not allow this to be
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45 * changed.
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46 */
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47 public static final int SSH_FILEXFER_ATTR_FLAGS_HIDDEN = 0x00000004;
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48
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49 /**
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50 * This attribute applies only to directories. This attribute is
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51 * always read-only, and cannot be modified. This attribute means
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52 * that files and directory names in this directory should be compared
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53 * without regard to case.
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54 * <p/>
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55 * It is recommended that where possible, the server's filesystem be
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56 * allowed to do comparisons. For example, if a client wished to prompt
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57 * a user before overwriting a file, it should not compare the new name
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58 * with the previously retrieved list of names in the directory. Rather,
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59 * it should first try to create the new file by specifying
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60 * SSH_FXF_CREATE_NEW flag. Then, if this fails and returns
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61 * SSH_FX_FILE_ALREADY_EXISTS, it should prompt the user and then retry
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62 * the create specifying SSH_FXF_CREATE_TRUNCATE.
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63 * <p/>
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64 * Unless otherwise specified, filenames are assumed to be case sensitive.
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65 */
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66 public static final int SSH_FILEXFER_ATTR_FLAGS_CASE_INSENSITIVE = 0x00000008;
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67
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68 /**
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69 * The file should be included in backup / archive operations.
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70 */
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71 public static final int SSH_FILEXFER_ATTR_FLAGS_ARCHIVE = 0x00000010;
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72
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73 /**
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74 * The file is stored on disk using file-system level transparent
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75 * encryption. This flag does not affect the file data on the wire
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76 * (for either READ or WRITE requests.)
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77 */
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78 public static final int SSH_FILEXFER_ATTR_FLAGS_ENCRYPTED = 0x00000020;
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79
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80 /**
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81 * The file is stored on disk using file-system level transparent
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82 * compression. This flag does not affect the file data on the wire.
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83 */
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84 public static final int SSH_FILEXFER_ATTR_FLAGS_COMPRESSED = 0x00000040;
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85
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86 /**
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87 * The file is a sparse file; this means that file blocks that have
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88 * not been explicitly written are not stored on disk. For example, if
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89 * a client writes a buffer at 10 M from the beginning of the file,
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90 * the blocks between the previous EOF marker and the 10 M offset would
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91 * not consume physical disk space.
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92 * <p/>
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93 * Some servers may store all files as sparse files, in which case
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94 * this bit will be unconditionally set. Other servers may not have
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95 * a mechanism for determining if the file is sparse, and so the file
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96 * MAY be stored sparse even if this flag is not set.
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97 */
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98 public static final int SSH_FILEXFER_ATTR_FLAGS_SPARSE = 0x00000080;
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99
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100 /**
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101 * Opening the file without either the SSH_FXF_ACCESS_APPEND_DATA or
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102 * the SSH_FXF_ACCESS_APPEND_DATA_ATOMIC flag (see section 8.1.1.3
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103 * of the SFTP standard draft) MUST result in an
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104 * SSH_FX_INVALID_PARAMETER error.
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105 */
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106 public static final int SSH_FILEXFER_ATTR_FLAGS_APPEND_ONLY = 0x00000100;
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107
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108 /**
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109 * The file cannot be deleted or renamed, no hard link can be created
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110 * to this file, and no data can be written to the file.
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111 * <p/>
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112 * This bit implies a stronger level of protection than
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113 * SSH_FILEXFER_ATTR_FLAGS_READONLY, the file permission mask or ACLs.
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114 * Typically even the superuser cannot write to immutable files, and
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115 * only the superuser can set or remove the bit.
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116 */
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117 public static final int SSH_FILEXFER_ATTR_FLAGS_IMMUTABLE = 0x00000200;
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118
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119 /**
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120 * When the file is modified, the changes are written synchronously
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121 * to the disk.
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122 */
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123 public static final int SSH_FILEXFER_ATTR_FLAGS_SYNC = 0x00000400;
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124
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125 /**
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126 * The server MAY include this bit in a directory listing or realpath
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127 * response. It indicates there was a failure in the translation to UTF-8.
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128 * If this flag is included, the server SHOULD also include the
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129 * UNTRANSLATED_NAME attribute.
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130 */
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131 public static final int SSH_FILEXFER_ATTR_FLAGS_TRANSLATION_ERR = 0x00000800;
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132
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133 }