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Diffstat (limited to 'gnu/usr.bin/cpio/userspec.c')
| -rw-r--r-- | gnu/usr.bin/cpio/userspec.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/gnu/usr.bin/cpio/userspec.c b/gnu/usr.bin/cpio/userspec.c deleted file mode 100644 index 44d7d91..0000000 --- a/gnu/usr.bin/cpio/userspec.c +++ /dev/null @@ -1,180 +0,0 @@ -/* userspec.c -- Parse a user and group string. - Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ - -/* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */ - -#include <stdio.h> -#include <sys/types.h> -#include <pwd.h> -#include <grp.h> - -#if defined(STDC_HEADERS) || defined(HAVE_STRING_H) -#include <string.h> -#ifndef index -#define index strchr -#endif -#else -#include <strings.h> -#endif - -#ifdef STDC_HEADERS -#include <stdlib.h> -#else -char *malloc (); -#endif - -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif - -#ifndef _POSIX_VERSION -struct passwd *getpwnam (); -struct group *getgrnam (); -struct group *getgrgid (); -#endif - -#ifdef _POSIX_SOURCE -#define endpwent() -#define endgrent() -#endif - -#define isdigit(c) ((c) >= '0' && (c) <= '9') - -char *strdup (); -static int isnumber (); - -/* Extract from NAME, which has the form "[user][:.][group]", - a USERNAME, UID U, GROUPNAME, and GID G. - Either user or group, or both, must be present. - If the group is omitted but the ":" or "." separator is given, - use the given user's login group. - - USERNAME and GROUPNAME will be in newly malloc'd memory. - Either one might be NULL instead, indicating that it was not - given and the corresponding numeric ID was left unchanged. - Might write NULs into NAME. - - Return NULL if successful, a static error message string if not. */ - -char * -parse_user_spec (name, uid, gid, username, groupname) - char *name; - uid_t *uid; - gid_t *gid; - char **username, **groupname; -{ - static char *tired = "virtual memory exhausted"; - struct passwd *pwd; - struct group *grp; - char *cp; - int use_login_group = 0; - - *username = *groupname = NULL; - - /* Check whether a group is given. */ - cp = index (name, ':'); - if (cp == NULL) - cp = index (name, '.'); - if (cp != NULL) - { - *cp++ = '\0'; - if (*cp == '\0') - { - if (cp == name + 1) - /* Neither user nor group given, just "." or ":". */ - return "can not omit both user and group"; - else - /* "user.". */ - use_login_group = 1; - } - else - { - /* Explicit group. */ - *groupname = strdup (cp); - if (*groupname == NULL) - return tired; - grp = getgrnam (cp); - if (grp == NULL) - { - if (!isnumber (cp)) - return "invalid group"; - *gid = atoi (cp); - } - else - *gid = grp->gr_gid; - endgrent (); /* Save a file descriptor. */ - } - } - - /* Parse the user name, now that any group has been removed. */ - - if (name[0] == '\0') - /* No user name was given, just a group. */ - return NULL; - - *username = strdup (name); - if (*username == NULL) - return tired; - - pwd = getpwnam (name); - if (pwd == NULL) - { - if (!isnumber (name)) - return "invalid user"; - if (use_login_group) - return "cannot get the login group of a numeric UID"; - *uid = atoi (name); - } - else - { - *uid = pwd->pw_uid; - if (use_login_group) - { - *gid = pwd->pw_gid; - grp = getgrgid (pwd->pw_gid); - if (grp == NULL) - { - *groupname = malloc (15); - if (*groupname == NULL) - return tired; - sprintf (*groupname, "%u", pwd->pw_gid); - } - else - { - *groupname = strdup (grp->gr_name); - if (*groupname == NULL) - return tired; - } - endgrent (); - } - } - endpwent (); - return NULL; -} - -/* Return nonzero if STR represents an unsigned decimal integer, - otherwise return 0. */ - -static int -isnumber (str) - char *str; -{ - for (; *str; str++) - if (!isdigit (*str)) - return 0; - return 1; -} |
