annotate src/com/trilead/ssh2/SFTPv3FileAttributes.java @ 252:932e34a11e9e

add range checking on get/set fields
author Carl Byington <carl@five-ten-sg.com>
date Mon, 14 Jul 2014 12:24:29 -0700
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1
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2 package com.trilead.ssh2;
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3
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4 /**
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5 * A <code>SFTPv3FileAttributes</code> object represents detail information
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6 * about a file on the server. Not all fields may/must be present.
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7 *
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8 * @author Christian Plattner, plattner@trilead.com
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9 * @version $Id: SFTPv3FileAttributes.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
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10 */
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11
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12 public class SFTPv3FileAttributes {
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13 /**
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14 * The SIZE attribute. <code>NULL</code> if not present.
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15 */
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16 public Long size = null;
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17
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18 /**
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19 * The UID attribute. <code>NULL</code> if not present.
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20 */
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21 public Integer uid = null;
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22
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23 /**
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24 * The GID attribute. <code>NULL</code> if not present.
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25 */
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26 public Integer gid = null;
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27
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28 /**
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29 * The POSIX permissions. <code>NULL</code> if not present.
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30 * <p>
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31 * Here is a list:
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32 * <p>
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33 * <pre>Note: these numbers are all OCTAL.
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34 *
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35 * S_IFMT 0170000 bitmask for the file type bitfields
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36 * S_IFSOCK 0140000 socket
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37 * S_IFLNK 0120000 symbolic link
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38 * S_IFREG 0100000 regular file
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39 * S_IFBLK 0060000 block device
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40 * S_IFDIR 0040000 directory
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41 * S_IFCHR 0020000 character device
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42 * S_IFIFO 0010000 fifo
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43 * S_ISUID 0004000 set UID bit
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44 * S_ISGID 0002000 set GID bit
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45 * S_ISVTX 0001000 sticky bit
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46 *
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47 * S_IRWXU 00700 mask for file owner permissions
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48 * S_IRUSR 00400 owner has read permission
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49 * S_IWUSR 00200 owner has write permission
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50 * S_IXUSR 00100 owner has execute permission
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51 * S_IRWXG 00070 mask for group permissions
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52 * S_IRGRP 00040 group has read permission
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53 * S_IWGRP 00020 group has write permission
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54 * S_IXGRP 00010 group has execute permission
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55 * S_IRWXO 00007 mask for permissions for others (not in group)
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56 * S_IROTH 00004 others have read permission
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57 * S_IWOTH 00002 others have write permisson
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58 * S_IXOTH 00001 others have execute permission
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59 * </pre>
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60 */
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61 public Integer permissions = null;
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62
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63 /**
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64 * The ATIME attribute. Represented as seconds from Jan 1, 1970 in UTC.
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65 * <code>NULL</code> if not present.
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66 */
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67 public Long atime = null;
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68
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69 /**
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70 * The MTIME attribute. Represented as seconds from Jan 1, 1970 in UTC.
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71 * <code>NULL</code> if not present.
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72 */
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73 public Long mtime = null;
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74
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75 /**
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76 * Checks if this entry is a directory.
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77 *
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78 * @return Returns true if permissions are available and they indicate
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79 * that this entry represents a directory.
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80 */
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81 public boolean isDirectory() {
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82 if (permissions == null)
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83 return false;
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84
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85 return ((permissions.intValue() & 0040000) != 0);
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86 }
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87
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88 /**
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89 * Checks if this entry is a regular file.
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90 *
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91 * @return Returns true if permissions are available and they indicate
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92 * that this entry represents a regular file.
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93 */
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94 public boolean isRegularFile() {
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95 if (permissions == null)
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96 return false;
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97
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98 return ((permissions.intValue() & 0100000) != 0);
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99 }
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100
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101 /**
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102 * Checks if this entry is a a symlink.
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103 *
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104 * @return Returns true if permissions are available and they indicate
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105 * that this entry represents a symlink.
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106 */
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107 public boolean isSymlink() {
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108 if (permissions == null)
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109 return false;
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110
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111 return ((permissions.intValue() & 0120000) != 0);
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112 }
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113
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114 /**
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115 * Turn the POSIX permissions into a 7 digit octal representation.
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116 * Note: the returned value is first masked with <code>0177777</code>.
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117 *
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118 * @return <code>NULL</code> if permissions are not available.
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119 */
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120 public String getOctalPermissions() {
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121 if (permissions == null)
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122 return null;
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123
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124 String res = Integer.toString(permissions.intValue() & 0177777, 8);
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125 StringBuffer sb = new StringBuffer();
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126 int leadingZeros = 7 - res.length();
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127
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128 while (leadingZeros > 0) {
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129 sb.append('0');
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130 leadingZeros--;
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131 }
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132
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133 sb.append(res);
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134 return sb.toString();
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135 }
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136 }