Mercurial > cpython-lru_cache-weakref

annotate Modules/grpmodule.c @ 4566:6403c94de50d legacy-trunk

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Added safeguard against failure in __del__.
author Guido van Rossum <guido@python.org>
date Wed, 27 Nov 1996 19:39:58 +0000
parents 65d2d8e67da3
children 9e48abbee6c5
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1 /***********************************************************
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2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
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3 The Netherlands.
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4
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5 All Rights Reserved
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6
4503
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7 Permission to use, copy, modify, and distribute this software and its
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8 documentation for any purpose and without fee is hereby granted,
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9 provided that the above copyright notice appear in all copies and that
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10 both that copyright notice and this permission notice appear in
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11 supporting documentation, and that the names of Stichting Mathematisch
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12 Centrum or CWI or Corporation for National Research Initiatives or
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13 CNRI not be used in advertising or publicity pertaining to
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14 distribution of the software without specific, written prior
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15 permission.
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16
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17 While CWI is the initial source for this software, a modified version
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18 is made available by the Corporation for National Research Initiatives
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19 (CNRI) at the Internet address ftp://ftp.python.org.
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20
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21 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
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22 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
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23 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
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24 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
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25 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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26 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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27 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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28 PERFORMANCE OF THIS SOFTWARE.
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29
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30 ******************************************************************/
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31
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32 /* UNIX group file access module */
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33
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34 #include "allobjects.h"
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35 #include "modsupport.h"
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36
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37 #include <sys/types.h>
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38 #include <grp.h>
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39
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40 static object *mkgrent(p)
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41 struct group *p;
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42 {
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43 object *v, *w;
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44 char **member;
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45 if ((w = newlistobject(0)) == NULL) {
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46 return NULL;
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47 }
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48 for (member = p->gr_mem; *member != NULL; member++) {
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49 object *x = newstringobject(*member);
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50 if (x == NULL || addlistitem(w, x) != 0) {
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51 XDECREF(x);
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52 DECREF(w);
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53 return NULL;
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54 }
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55 }
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56 v = mkvalue("(sslO)",
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57 p->gr_name,
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58 p->gr_passwd,
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59 #if defined(NeXT) && defined(_POSIX_SOURCE) && defined(__LITTLE_ENDIAN__)
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60 /* Correct a bug present on Intel machines in NextStep 3.2 and 3.3;
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61 for later versions you may have to remove this */
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62 (long)p->gr_short_pad, /* ugh-NeXT broke the padding */
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63 #else
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64 (long)p->gr_gid,
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65 #endif
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66 w);
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67 DECREF(w);
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68 return v;
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69 }
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70
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71 static object *grp_getgrgid(self, args)
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72 object *self, *args;
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73 {
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74 int gid;
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75 struct group *p;
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76 if (!getintarg(args, &gid))
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77 return NULL;
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78 if ((p = getgrgid(gid)) == NULL) {
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79 err_setstr(KeyError, "getgrgid(): gid not found");
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80 return NULL;
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81 }
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82 return mkgrent(p);
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83 }
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84
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85 static object *grp_getgrnam(self, args)
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86 object *self, *args;
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87 {
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88 char *name;
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89 struct group *p;
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90 if (!getstrarg(args, &name))
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91 return NULL;
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92 if ((p = getgrnam(name)) == NULL) {
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93 err_setstr(KeyError, "getgrnam(): name not found");
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94 return NULL;
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95 }
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96 return mkgrent(p);
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97 }
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98
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99 static object *grp_getgrall(self, args)
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100 object *self, *args;
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101 {
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102 object *d;
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103 struct group *p;
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104 if (!getnoarg(args))
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105 return NULL;
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106 if ((d = newlistobject(0)) == NULL)
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107 return NULL;
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108 setgrent();
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109 while ((p = getgrent()) != NULL) {
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110 object *v = mkgrent(p);
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111 if (v == NULL || addlistitem(d, v) != 0) {
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112 XDECREF(v);
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113 DECREF(d);
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114 return NULL;
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115 }
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116 }
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117 return d;
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118 }
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119
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120 static struct methodlist grp_methods[] = {
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121 {"getgrgid", grp_getgrgid},
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122 {"getgrnam", grp_getgrnam},
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123 {"getgrall", grp_getgrall},
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124 {NULL, NULL} /* sentinel */
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125 };
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126
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127 void
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128 initgrp()
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129 {
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130 initmodule("grp", grp_methods);
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131 }