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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 * Copyright (c) 1988, 1993, 1994 |
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18 * The Regents of the University of California. All rights reserved. |
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19 * |
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20 * This code is derived from software written by Ken Arnold and |
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21 * published in UNIX Review, Vol. 6, No. 8. |
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22 * |
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23 * Redistribution and use in source and binary forms, with or without |
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24 * modification, are permitted provided that the following conditions |
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25 * are met: |
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26 * 1. Redistributions of source code must retain the above copyright |
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27 * notice, this list of conditions and the following disclaimer. |
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28 * 2. Redistributions in binary form must reproduce the above copyright |
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29 * notice, this list of conditions and the following disclaimer in the |
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30 * documentation and/or other materials provided with the distribution. |
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31 * 3. All advertising materials mentioning features or use of this software |
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32 * must display the following acknowledgement: |
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33 * This product includes software developed by the University of |
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34 * California, Berkeley and its contributors. |
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35 * 4. Neither the name of the University nor the names of its contributors |
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36 * may be used to endorse or promote products derived from this software |
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37 * without specific prior written permission. |
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38 * |
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39 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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40 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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42 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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43 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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44 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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45 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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47 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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48 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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49 * SUCH DAMAGE. |
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50 * |
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51 */ |
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52 |
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53 /* |
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54 * From: @(#)popen.c 8.3 (Berkeley) 4/6/94 |
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55 * From: NetBSD: popen.c,v 1.5 1995/04/11 02:45:00 cgd Exp |
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56 * From: OpenBSD: popen.c,v 1.8 1996/12/07 10:52:06 bitblt Exp |
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57 * From: OpenBSD: popen.c,v 1.10 1999/02/26 00:15:54 art Exp |
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58 */ |
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59 char popen_rcsid[] = |
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60 "$Id: popen.c,v 1.6 1999/07/16 01:12:54 dholland Exp $"; |
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61 |
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62 #include <sys/types.h> |
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63 #include <sys/wait.h> |
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64 #include <sys/param.h> |
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65 #include <sys/stat.h> |
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66 |
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67 #include <arpa/ftp.h> |
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68 |
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69 #include <errno.h> |
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70 #include <glob.h> |
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71 #include <signal.h> |
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72 #include <stdio.h> |
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73 #include <stdlib.h> |
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74 #include <string.h> |
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75 #include <unistd.h> |
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76 #include <dirent.h> |
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77 |
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78 #include "extern.h" |
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79 |
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80 |
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81 //#define SIG_BLOCK 1 /* set of signals to block */ |
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82 //#define SIG_SETMASK 0 /* set mask with sigprocmask() */ |
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83 |
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84 /* |
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85 * Special version of popen which avoids call to shell. This ensures noone |
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86 * may create a pipe to a hidden program as a side effect of a list or dir |
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87 * command. |
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88 * |
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89 * Note: destroys "program". |
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90 */ |
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91 static int *pids; |
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92 |
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93 |
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94 extern int root; |
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95 extern int type; |
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96 extern off_t byte_count; |
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97 |
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98 |
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99 #define MAX_ARGV 100 |
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100 #define MAX_GARGV 1000 |
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101 |
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102 |
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103 FILE * |
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104 ftpd_popen(char *program, const char *type) |
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105 { |
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106 FILE *volatile iop; |
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107 int pdes[2]; |
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108 |
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109 if ((*type != 'r' && *type != 'w') || type[1]) |
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110 return (NULL); |
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111 |
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112 |
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113 if (pipe(pdes) < 0) |
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114 return (NULL); |
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115 |
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116 |
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117 if (( iop = popen(program, "r")) == NULL) |
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118 { |
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119 return (NULL); |
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120 } |
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121 |
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122 if (*type == 'r') { |
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123 iop = fdopen(pdes[0], type); |
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124 (void)close(pdes[1]); |
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125 } else { |
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126 iop = fdopen(pdes[1], type); |
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127 (void)close(pdes[0]); |
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128 } |
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129 |
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130 |
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131 return (iop); |
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132 } |
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133 |
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134 int |
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135 ftpd_pclose(FILE *iop) |
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136 { |
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137 int fdes, status; |
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138 pid_t pid; |
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139 |
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140 /* |
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141 * pclose returns -1 if stream is not associated with a |
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142 * `popened' command, or, if already `pclosed'. |
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143 */ |
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144 if (pids == 0 || pids[fdes = fileno(iop)] == 0) |
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145 return (-1); |
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146 (void)fclose(iop); |
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147 |
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148 while ((pid = waitpid(pids[fdes], &status, 0)) < 0 && errno == EINTR) |
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149 continue; |
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150 pids[fdes] = 0; |
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151 if (pid < 0) |
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152 return (pid); |
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153 if (WIFEXITED(status)) |
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154 return (WEXITSTATUS(status)); |
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155 return (1); |
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156 } |
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157 |
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158 |
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159 |
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160 |
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161 |
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162 |
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163 |