summaryrefslogtreecommitdiff
path: root/i/pc104/initrd/conf/busybox/libbb/bb_pwd.c
diff options
context:
space:
mode:
Diffstat (limited to 'i/pc104/initrd/conf/busybox/libbb/bb_pwd.c')
-rw-r--r--i/pc104/initrd/conf/busybox/libbb/bb_pwd.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/libbb/bb_pwd.c b/i/pc104/initrd/conf/busybox/libbb/bb_pwd.c
new file mode 100644
index 0000000..223a6b4
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/libbb/bb_pwd.c
@@ -0,0 +1,129 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * password utility routines.
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+
+#include "libbb.h"
+
+#define assert(x) ((void)0)
+
+/*
+ * if bufsize is > 0 char *buffer cannot be set to NULL.
+ * If idname is not NULL it is written on the static
+ * allocated buffer (and a pointer to it is returned).
+ * if idname is NULL, id as string is written to the static
+ * allocated buffer and NULL is returned.
+ * if bufsize is = 0 char *buffer can be set to NULL.
+ * If idname exists a pointer to it is returned,
+ * else NULL is returned.
+ * if bufsize is < 0 char *buffer can be set to NULL.
+ * If idname exists a pointer to it is returned,
+ * else an error message is printed and the program exits.
+ */
+
+/* internal function for bb_getpwuid and bb_getgrgid */
+static char* bb_getug(char *buffer, char *idname, long id, int bufsize, char prefix)
+{
+ if (bufsize > 0 ) {
+ assert(buffer != NULL);
+ if (idname) {
+ return safe_strncpy(buffer, idname, bufsize);
+ }
+ snprintf(buffer, bufsize, "%ld", id);
+ } else if (bufsize < 0 && !idname) {
+ bb_error_msg_and_die("unknown %cid %ld", prefix, id);
+ }
+ return idname;
+}
+
+/* Hacked by Tito Ragusa (c) 2004 <farmatito@tiscali.it> to make it more
+ * flexible :
+ *
+ * if bufsize is > 0 char *group cannot be set to NULL.
+ * On success groupname is written on static allocated buffer
+ * group (and a pointer to it is returned).
+ * On failure gid as string is written to static allocated
+ * buffer group and NULL is returned.
+ * if bufsize is = 0 char *group can be set to NULL.
+ * On success groupname is returned.
+ * On failure NULL is returned.
+ * if bufsize is < 0 char *group can be set to NULL.
+ * On success groupname is returned.
+ * On failure an error message is printed and
+ * the program exits.
+ */
+
+/* gets a groupname given a gid */
+char* bb_getgrgid(char *group, long gid, int bufsize)
+{
+ struct group *mygroup = getgrgid(gid);
+
+ return bb_getug(group,
+ mygroup ? mygroup->gr_name : (char *)mygroup,
+ gid, bufsize, 'g');
+}
+
+/* returns a gid given a group name */
+long xgroup2gid(const char *name)
+{
+ struct group *mygroup;
+
+ mygroup = getgrnam(name);
+ if (mygroup == NULL)
+ bb_error_msg_and_die("unknown group name: %s", name);
+
+ return mygroup->gr_gid;
+}
+
+/* returns a uid given a username */
+long xuname2uid(const char *name)
+{
+ struct passwd *myuser;
+
+ myuser = getpwnam(name);
+ if (myuser == NULL)
+ bb_error_msg_and_die("unknown user name: %s", name);
+
+ return myuser->pw_uid;
+}
+
+/* Hacked by Tito Ragusa (c) 2004 <farmatito@tiscali.it> to make it more
+ * flexible :
+ *
+ * if bufsize is > 0 char *name cannot be set to NULL.
+ * On success username is written on the static allocated
+ * buffer name (and a pointer to it is returned).
+ * On failure uid as string is written to the static
+ * allocated buffer name and NULL is returned.
+ * if bufsize is = 0 char *name can be set to NULL.
+ * On success username is returned.
+ * On failure NULL is returned.
+ * if bufsize is < 0 char *name can be set to NULL
+ * On success username is returned.
+ * On failure an error message is printed and
+ * the program exits.
+ */
+
+/* gets a username given a uid */
+char* bb_getpwuid(char *name, long uid, int bufsize)
+{
+ struct passwd *myuser = getpwuid(uid);
+
+ return bb_getug(name, myuser ? myuser->pw_name : (char *)myuser,
+ uid, bufsize, 'u');
+}
+
+unsigned long get_ug_id(const char *s,
+ long (*xname2id)(const char *))
+{
+ unsigned long r;
+
+ r = bb_strtoul(s, NULL, 10);
+ if (errno)
+ return xname2id(s);
+ return r;
+}