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1 // |
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2 // Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 // All rights reserved. |
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4 // This component and the accompanying materials are made available |
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5 // under the terms of "Eclipse Public License v1.0" |
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6 // which accompanies this distribution, and is available |
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7 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 // |
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9 // Initial Contributors: |
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10 // Nokia Corporation - initial contribution. |
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11 // |
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12 // Contributors: |
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13 // |
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14 // Description: |
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15 // |
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16 |
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17 /* |
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18 * Portions Copyright (c) 1988, 1993 |
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19 * The Regents of the University of California. All rights reserved. |
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20 * Portions Copyright (c) 1996, Jason Downs. All rights reserved. |
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21 * |
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22 * Redistribution and use in source and binary forms, with or without |
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23 * modification, are permitted provided that the following conditions |
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24 * are met: |
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25 * 1. Redistributions of source code must retain the above copyright |
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26 * notice, this list of conditions and the following disclaimer. |
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27 * 2. Redistributions in binary form must reproduce the above copyright |
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28 * notice, this list of conditions and the following disclaimer in the |
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29 * documentation and/or other materials provided with the distribution. |
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30 * 3. All advertising materials mentioning features or use of this software |
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31 * must display the following acknowledgement: |
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32 * This product includes software developed by the University of |
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33 * California, Berkeley and its contributors. |
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34 * 4. Neither the name of the University nor the names of its contributors |
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35 * may be used to endorse or promote products derived from this software |
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36 * without specific prior written permission. |
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37 * |
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38 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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39 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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41 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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42 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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43 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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44 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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45 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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46 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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47 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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48 * SUCH DAMAGE. |
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49 */ |
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50 |
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51 /* |
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52 * From: OpenBSD: logutmp.c,v 1.1 1996/06/18 10:09:23 downsj Exp |
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53 * From: OpenBSD: logutmp.c,v 1.2 1998/07/13 02:11:17 millert Exp |
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54 */ |
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55 char logutmp_rcsid[] = |
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56 "$Id: logutmp.c,v 1.4 1999/07/16 01:12:54 dholland Exp $"; |
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57 |
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58 #include <sys/types.h> |
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59 |
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60 #include <fcntl.h> |
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61 #include <unistd.h> |
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62 #include <stdlib.h> |
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63 #include <utmp.h> |
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64 #include <stdio.h> |
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65 #include <string.h> |
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66 //#ifndef __linux__ |
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67 //#include <ttyent.h> |
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68 //#endif |
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69 #include "extern.h" |
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70 |
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71 typedef struct utmp UTMP; |
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72 |
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73 #ifndef __linux__ |
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74 static int fd = -1; |
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75 static int topslot = -1; |
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76 #endif |
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77 |
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78 /* |
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79 * Special versions of login()/logout() which hold the utmp file open, |
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80 * for use with ftpd. |
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81 */ |
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82 |
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83 void |
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84 login(const UTMP *ut) |
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85 { |
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86 #ifndef __linux__ |
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87 UTMP ubuf; |
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88 |
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89 /* |
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90 * First, loop through /etc/ttys, if needed, to initialize the |
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91 * top of the tty slots, since ftpd has no tty. |
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92 */ |
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93 if (topslot < 0) { |
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94 topslot = 0; |
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95 } |
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96 if ((topslot < 0) || ((fd < 0) |
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97 && (fd = open(_PATH_UTMP, O_RDWR|O_CREAT, 0644)) < 0)) |
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98 return; |
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99 |
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100 /* |
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101 * Now find a slot that's not in use... |
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102 */ |
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103 (void)lseek(fd, (off_t)(topslot * sizeof(UTMP)), SEEK_SET); |
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104 |
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105 while (1) { |
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106 if (read(fd, &ubuf, sizeof(UTMP)) == sizeof(UTMP)) { |
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107 if (!ubuf.ut_name[0]) { |
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108 (void)lseek(fd, -(off_t)sizeof(UTMP), SEEK_CUR); |
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109 break; |
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110 } |
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111 topslot++; |
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112 } else { |
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113 (void)lseek(fd, (off_t)(topslot * sizeof(UTMP)), SEEK_SET); |
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114 break; |
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115 } |
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116 } |
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117 |
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118 (void)write(fd, ut, sizeof(UTMP)); |
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119 #else |
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120 (void)ut; |
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121 #endif |
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122 } |
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123 |
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124 int |
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125 logout(register const char *line) |
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126 { |
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127 #ifndef __linux__ |
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128 UTMP ut; |
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129 int rval; |
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130 |
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131 rval = 0; |
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132 if (fd < 0) |
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133 return(rval); |
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134 |
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135 (void)lseek(fd, 0, SEEK_SET); |
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136 |
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137 while (read(fd, &ut, sizeof(UTMP)) == sizeof(UTMP)) { |
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138 if (!ut.ut_name[0] |
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139 || strncmp(ut.ut_line, line, UT_LINESIZE)) |
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140 continue; |
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141 bzero(ut.ut_name, UT_NAMESIZE); |
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142 bzero(ut.ut_host, UT_HOSTSIZE); |
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143 (void)lseek(fd, -(off_t)sizeof(UTMP), SEEK_CUR); |
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144 (void)write(fd, &ut, sizeof(UTMP)); |
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145 rval = 1; |
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146 } |
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147 return(rval); |
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148 #else |
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149 (void)line; |
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150 return 1; |
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151 #endif |
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152 } |