1 | /*
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2 | Unix SMB/CIFS implementation.
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3 |
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4 | NetBSD loadable authentication module, providing identification
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5 | routines against Samba winbind/Windows NT Domain
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6 |
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7 | Copyright (C) Luke Mewburn 2004-2005
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8 |
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9 | This library is free software; you can redistribute it and/or
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10 | modify it under the terms of the GNU Lesser General Public
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11 | License as published by the Free Software Foundation; either
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12 | version 3 of the License, or (at your option) any later version.
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13 |
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14 | This library is distributed in the hope that it will be useful,
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15 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 | Library General Public License for more details.
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18 |
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19 | You should have received a copy of the GNU Lesser General Public
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20 | License along with this library; if not, see <http://www.gnu.org/licenses/>.
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21 | */
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22 |
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23 |
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24 | #include "winbind_client.h"
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25 |
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26 | #include <sys/param.h>
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27 | #include <stdarg.h>
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28 | #include <syslog.h>
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29 |
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30 | /* dynamic nsswitch with "new" getpw* nsdispatch API available */
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31 | #if defined(NSS_MODULE_INTERFACE_VERSION) && defined(HAVE_GETPWENT_R)
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32 |
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33 | /*
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34 | group functions
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35 | ---------------
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36 | */
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37 |
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38 | static struct group _winbind_group;
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39 | static char _winbind_groupbuf[1024];
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40 |
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41 | /*
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42 | * We need a proper prototype for this :-)
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43 | */
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44 |
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45 | NSS_STATUS _nss_winbind_setpwent(void);
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46 | NSS_STATUS _nss_winbind_endpwent(void);
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47 | NSS_STATUS _nss_winbind_getpwent_r(struct passwd *result, char *buffer,
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48 | size_t buflen, int *errnop);
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49 | NSS_STATUS _nss_winbind_getpwuid_r(uid_t uid, struct passwd *result,
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50 | char *buffer, size_t buflen, int *errnop);
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51 | NSS_STATUS _nss_winbind_getpwnam_r(const char *name, struct passwd *result,
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52 | char *buffer, size_t buflen, int *errnop);
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53 | NSS_STATUS _nss_winbind_setgrent(void);
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54 | NSS_STATUS _nss_winbind_endgrent(void);
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55 | NSS_STATUS _nss_winbind_getgrent_r(struct group *result, char *buffer,
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56 | size_t buflen, int *errnop);
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57 | NSS_STATUS _nss_winbind_getgrlst_r(struct group *result, char *buffer,
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58 | size_t buflen, int *errnop);
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59 | NSS_STATUS _nss_winbind_getgrnam_r(const char *name, struct group *result,
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60 | char *buffer, size_t buflen, int *errnop);
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61 | NSS_STATUS _nss_winbind_getgrgid_r(gid_t gid, struct group *result, char *buffer,
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62 | size_t buflen, int *errnop);
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63 | NSS_STATUS _nss_winbind_initgroups_dyn(char *user, gid_t group, long int *start,
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64 | long int *size, gid_t **groups,
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65 | long int limit, int *errnop);
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66 | NSS_STATUS _nss_winbind_getusersids(const char *user_sid, char **group_sids,
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67 | int *num_groups, char *buffer, size_t buf_size,
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68 | int *errnop);
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69 | NSS_STATUS _nss_winbind_nametosid(const char *name, char **sid, char *buffer,
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70 | size_t buflen, int *errnop);
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71 | NSS_STATUS _nss_winbind_sidtoname(const char *sid, char **name, char *buffer,
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72 | size_t buflen, int *errnop);
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73 | NSS_STATUS _nss_winbind_sidtouid(const char *sid, uid_t *uid, int *errnop);
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74 | NSS_STATUS _nss_winbind_sidtogid(const char *sid, gid_t *gid, int *errnop);
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75 | NSS_STATUS _nss_winbind_uidtosid(uid_t uid, char **sid, char *buffer,
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76 | size_t buflen, int *errnop);
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77 | NSS_STATUS _nss_winbind_gidtosid(gid_t gid, char **sid, char *buffer,
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78 | size_t buflen, int *errnop);
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79 |
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80 | int
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81 | netbsdwinbind_endgrent(void *nsrv, void *nscb, va_list ap)
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82 | {
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83 | int rv;
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84 |
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85 | rv = _nss_winbind_endgrent();
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86 | return rv;
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87 | }
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88 |
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89 | int
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90 | netbsdwinbind_setgrent(void *nsrv, void *nscb, va_list ap)
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91 | {
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92 | int rv;
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93 |
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94 | rv = _nss_winbind_setgrent();
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95 | return rv;
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96 | }
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97 |
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98 | int
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99 | netbsdwinbind_getgrent(void *nsrv, void *nscb, va_list ap)
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100 | {
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101 | struct group **retval = va_arg(ap, struct group **);
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102 |
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103 | int rv, rerrno;
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104 |
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105 | *retval = NULL;
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106 | rv = _nss_winbind_getgrent_r(&_winbind_group,
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107 | _winbind_groupbuf, sizeof(_winbind_groupbuf), &rerrno);
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108 | if (rv == NS_SUCCESS)
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109 | *retval = &_winbind_group;
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110 | return rv;
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111 | }
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112 |
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113 | int
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114 | netbsdwinbind_getgrent_r(void *nsrv, void *nscb, va_list ap)
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115 | {
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116 | int *retval = va_arg(ap, int *);
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117 | struct group *grp = va_arg(ap, struct group *);
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118 | char *buffer = va_arg(ap, char *);
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119 | size_t buflen = va_arg(ap, size_t);
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120 | struct group **result = va_arg(ap, struct group **);
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121 |
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122 | int rv, rerrno;
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123 |
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124 | *result = NULL;
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125 | rerrno = 0;
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126 |
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127 | rv = _nss_winbind_getgrent_r(grp, buffer, buflen, &rerrno);
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128 | if (rv == NS_SUCCESS)
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129 | *result = grp;
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130 | else
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131 | *retval = rerrno;
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132 | return rv;
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133 | }
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134 |
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135 | int
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136 | netbsdwinbind_getgrgid(void *nsrv, void *nscb, va_list ap)
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137 | {
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138 | struct group **retval = va_arg(ap, struct group **);
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139 | gid_t gid = va_arg(ap, gid_t);
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140 |
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141 | int rv, rerrno;
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142 |
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143 | *retval = NULL;
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144 | rv = _nss_winbind_getgrgid_r(gid, &_winbind_group,
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145 | _winbind_groupbuf, sizeof(_winbind_groupbuf), &rerrno);
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146 | if (rv == NS_SUCCESS)
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147 | *retval = &_winbind_group;
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148 | return rv;
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149 | }
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150 |
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151 | int
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152 | netbsdwinbind_getgrgid_r(void *nsrv, void *nscb, va_list ap)
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153 | {
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154 | int *retval = va_arg(ap, int *);
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155 | gid_t gid = va_arg(ap, gid_t);
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156 | struct group *grp = va_arg(ap, struct group *);
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157 | char *buffer = va_arg(ap, char *);
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158 | size_t buflen = va_arg(ap, size_t);
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159 | struct group **result = va_arg(ap, struct group **);
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160 |
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161 | int rv, rerrno;
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162 |
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163 | *result = NULL;
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164 | rerrno = 0;
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165 |
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166 | rv = _nss_winbind_getgrgid_r(gid, grp, buffer, buflen, &rerrno);
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167 | if (rv == NS_SUCCESS)
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168 | *result = grp;
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169 | else
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170 | *retval = rerrno;
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171 | return rv;
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172 | }
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173 |
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174 | int
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175 | netbsdwinbind_getgrnam(void *nsrv, void *nscb, va_list ap)
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176 | {
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177 | struct group **retval = va_arg(ap, struct group **);
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178 | const char *name = va_arg(ap, const char *);
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179 |
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180 | int rv, rerrno;
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181 |
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182 | *retval = NULL;
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183 | rv = _nss_winbind_getgrnam_r(name, &_winbind_group,
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184 | _winbind_groupbuf, sizeof(_winbind_groupbuf), &rerrno);
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185 | if (rv == NS_SUCCESS)
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186 | *retval = &_winbind_group;
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187 | return rv;
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188 | }
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189 |
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190 | int
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191 | netbsdwinbind_getgrnam_r(void *nsrv, void *nscb, va_list ap)
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192 | {
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193 | int *retval = va_arg(ap, int *);
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194 | const char *name = va_arg(ap, const char *);
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195 | struct group *grp = va_arg(ap, struct group *);
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196 | char *buffer = va_arg(ap, char *);
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197 | size_t buflen = va_arg(ap, size_t);
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198 | struct group **result = va_arg(ap, struct group **);
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199 |
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200 | int rv, rerrno;
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201 |
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202 | *result = NULL;
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203 | rerrno = 0;
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204 |
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205 | rv = _nss_winbind_getgrnam_r(name, grp, buffer, buflen, &rerrno);
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206 | if (rv == NS_SUCCESS)
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207 | *result = grp;
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208 | else
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209 | *retval = rerrno;
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210 | return rv;
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211 | }
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212 |
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213 | int
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214 | netbsdwinbind_getgroupmembership(void *nsrv, void *nscb, va_list ap)
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215 | {
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216 | int *result = va_arg(ap, int *);
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217 | const char *uname = va_arg(ap, const char *);
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218 | gid_t *groups = va_arg(ap, gid_t *);
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219 | int maxgrp = va_arg(ap, int);
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220 | int *groupc = va_arg(ap, int *);
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221 |
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222 | struct winbindd_request request;
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223 | struct winbindd_response response;
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224 | gid_t *wblistv;
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225 | int wblistc, i, isdup, dupc;
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226 |
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227 | ZERO_STRUCT(request);
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228 | ZERO_STRUCT(response);
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229 | strncpy(request.data.username, uname,
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230 | sizeof(request.data.username) - 1);
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231 | i = winbindd_request_response(NULL, WINBINDD_GETGROUPS,
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232 | &request, &response);
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233 | if (i != NSS_STATUS_SUCCESS)
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234 | return NS_NOTFOUND;
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235 | wblistv = (gid_t *)response.extra_data.data;
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236 | wblistc = response.data.num_entries;
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237 |
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238 | for (i = 0; i < wblistc; i++) { /* add winbind gids */
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239 | isdup = 0; /* skip duplicates */
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240 | for (dupc = 0; dupc < MIN(maxgrp, *groupc); dupc++) {
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241 | if (groups[dupc] == wblistv[i]) {
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242 | isdup = 1;
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243 | break;
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244 | }
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245 | }
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246 | if (isdup)
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247 | continue;
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248 | if (*groupc < maxgrp) /* add this gid */
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249 | groups[*groupc] = wblistv[i];
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250 | else
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251 | *result = -1;
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252 | (*groupc)++;
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253 | }
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254 | SAFE_FREE(wblistv);
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255 | return NS_NOTFOUND;
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256 | }
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257 |
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258 |
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259 | /*
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260 | passwd functions
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261 | ----------------
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262 | */
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263 |
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264 | static struct passwd _winbind_passwd;
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265 | static char _winbind_passwdbuf[1024];
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266 |
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267 | int
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268 | netbsdwinbind_endpwent(void *nsrv, void *nscb, va_list ap)
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269 | {
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270 | int rv;
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271 |
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272 | rv = _nss_winbind_endpwent();
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273 | return rv;
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274 | }
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275 |
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276 | int
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277 | netbsdwinbind_setpwent(void *nsrv, void *nscb, va_list ap)
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278 | {
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279 | int rv;
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280 |
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281 | rv = _nss_winbind_setpwent();
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282 | return rv;
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283 | }
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284 |
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285 | int
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286 | netbsdwinbind_getpwent(void *nsrv, void *nscb, va_list ap)
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287 | {
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288 | struct passwd **retval = va_arg(ap, struct passwd **);
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289 |
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290 | int rv, rerrno;
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291 |
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292 | *retval = NULL;
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293 |
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294 | rv = _nss_winbind_getpwent_r(&_winbind_passwd,
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295 | _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
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296 | if (rv == NS_SUCCESS)
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297 | *retval = &_winbind_passwd;
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298 | return rv;
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299 | }
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300 |
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301 | int
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302 | netbsdwinbind_getpwent_r(void *nsrv, void *nscb, va_list ap)
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303 | {
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304 | int *retval = va_arg(ap, int *);
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305 | struct passwd *pw = va_arg(ap, struct passwd *);
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306 | char *buffer = va_arg(ap, char *);
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307 | size_t buflen = va_arg(ap, size_t);
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308 | struct passwd **result = va_arg(ap, struct passwd **);
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309 |
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310 | int rv, rerrno;
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311 |
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312 | *result = NULL;
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313 | rerrno = 0;
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314 |
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315 | rv = _nss_winbind_getpwent_r(pw, buffer, buflen, &rerrno);
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316 | if (rv == NS_SUCCESS)
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317 | *result = pw;
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318 | else
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319 | *retval = rerrno;
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320 | return rv;
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321 | }
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322 |
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323 | int
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324 | netbsdwinbind_getpwnam(void *nsrv, void *nscb, va_list ap)
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325 | {
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326 | struct passwd **retval = va_arg(ap, struct passwd **);
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327 | const char *name = va_arg(ap, const char *);
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328 |
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329 | int rv, rerrno;
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330 |
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331 | *retval = NULL;
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332 | rv = _nss_winbind_getpwnam_r(name, &_winbind_passwd,
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333 | _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
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334 | if (rv == NS_SUCCESS)
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335 | *retval = &_winbind_passwd;
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336 | return rv;
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337 | }
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338 |
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339 | int
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340 | netbsdwinbind_getpwnam_r(void *nsrv, void *nscb, va_list ap)
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341 | {
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342 | int *retval = va_arg(ap, int *);
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343 | const char *name = va_arg(ap, const char *);
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344 | struct passwd *pw = va_arg(ap, struct passwd *);
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345 | char *buffer = va_arg(ap, char *);
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346 | size_t buflen = va_arg(ap, size_t);
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347 | struct passwd **result = va_arg(ap, struct passwd **);
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348 |
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349 | int rv, rerrno;
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350 |
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351 | *result = NULL;
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352 | rerrno = 0;
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353 |
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354 | rv = _nss_winbind_getpwnam_r(name, pw, buffer, buflen, &rerrno);
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355 | if (rv == NS_SUCCESS)
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356 | *result = pw;
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357 | else
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358 | *retval = rerrno;
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359 | return rv;
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360 | }
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361 |
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362 | int
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363 | netbsdwinbind_getpwuid(void *nsrv, void *nscb, va_list ap)
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364 | {
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365 | struct passwd **retval = va_arg(ap, struct passwd **);
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366 | uid_t uid = va_arg(ap, uid_t);
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367 |
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368 | int rv, rerrno;
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369 |
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370 | *retval = NULL;
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371 | rv = _nss_winbind_getpwuid_r(uid, &_winbind_passwd,
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372 | _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
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373 | if (rv == NS_SUCCESS)
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374 | *retval = &_winbind_passwd;
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375 | return rv;
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376 | }
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377 |
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378 | int
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379 | netbsdwinbind_getpwuid_r(void *nsrv, void *nscb, va_list ap)
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380 | {
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381 | int *retval = va_arg(ap, int *);
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382 | uid_t uid = va_arg(ap, uid_t);
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383 | struct passwd *pw = va_arg(ap, struct passwd *);
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384 | char *buffer = va_arg(ap, char *);
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385 | size_t buflen = va_arg(ap, size_t);
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386 | struct passwd **result = va_arg(ap, struct passwd **);
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387 |
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388 | int rv, rerrno;
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389 |
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390 | *result = NULL;
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391 | rerrno = 0;
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392 |
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393 | rv = _nss_winbind_getpwuid_r(uid, pw, buffer, buflen, &rerrno);
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394 | if (rv == NS_SUCCESS)
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395 | *result = pw;
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396 | else
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397 | *retval = rerrno;
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398 | return rv;
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399 | }
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400 |
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401 |
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402 | /*
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403 | nsswitch module setup
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404 | ---------------------
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405 | */
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406 |
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407 |
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408 | static ns_mtab winbind_methods[] = {
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409 |
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410 | { NSDB_GROUP, "endgrent", netbsdwinbind_endgrent, NULL },
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411 | { NSDB_GROUP, "getgrent", netbsdwinbind_getgrent, NULL },
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412 | { NSDB_GROUP, "getgrent_r", netbsdwinbind_getgrent_r, NULL },
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413 | { NSDB_GROUP, "getgrgid", netbsdwinbind_getgrgid, NULL },
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414 | { NSDB_GROUP, "getgrgid_r", netbsdwinbind_getgrgid_r, NULL },
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415 | { NSDB_GROUP, "getgrnam", netbsdwinbind_getgrnam, NULL },
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416 | { NSDB_GROUP, "getgrnam_r", netbsdwinbind_getgrnam_r, NULL },
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417 | { NSDB_GROUP, "setgrent", netbsdwinbind_setgrent, NULL },
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418 | { NSDB_GROUP, "setgroupent", netbsdwinbind_setgrent, NULL },
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419 | { NSDB_GROUP, "getgroupmembership", netbsdwinbind_getgroupmembership, NULL },
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420 |
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421 | { NSDB_PASSWD, "endpwent", netbsdwinbind_endpwent, NULL },
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422 | { NSDB_PASSWD, "getpwent", netbsdwinbind_getpwent, NULL },
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423 | { NSDB_PASSWD, "getpwent_r", netbsdwinbind_getpwent_r, NULL },
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424 | { NSDB_PASSWD, "getpwnam", netbsdwinbind_getpwnam, NULL },
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425 | { NSDB_PASSWD, "getpwnam_r", netbsdwinbind_getpwnam_r, NULL },
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426 | { NSDB_PASSWD, "getpwuid", netbsdwinbind_getpwuid, NULL },
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427 | { NSDB_PASSWD, "getpwuid_r", netbsdwinbind_getpwuid_r, NULL },
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428 | { NSDB_PASSWD, "setpassent", netbsdwinbind_setpwent, NULL },
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429 | { NSDB_PASSWD, "setpwent", netbsdwinbind_setpwent, NULL },
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430 |
|
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431 | };
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432 |
|
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433 | ns_mtab *
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434 | nss_module_register(const char *source, unsigned int *mtabsize,
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435 | nss_module_unregister_fn *unreg)
|
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436 | {
|
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437 | *mtabsize = sizeof(winbind_methods)/sizeof(winbind_methods[0]);
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438 | *unreg = NULL;
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439 | return (winbind_methods);
|
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440 | }
|
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441 |
|
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442 | #endif /* NSS_MODULE_INTERFACE_VERSION && HAVE_GETPWENT_R */
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