Teach pw(8) about how to use pw/gr API to reduce code duplication

MFC after:	2 months

1 files changed, 121 insertions, 0 deletions

diff --git a/pw/pwupd.h b/pw/pwupd.h
new file mode 100644
index 0000000..200ffee
--- /dev/null
+++ b/pw/pwupd.h
@@ -0,0 +1,121 @@
+/*-
+ * Copyright (C) 1996
+ *	David L. Nugent.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _PWUPD_H_
+#define _PWUPD_H_
+
+#include <sys/types.h>
+#include <pwd.h>
+#include <grp.h>
+
+#include <sys/cdefs.h>
+
+#if defined(__FreeBSD__)
+#define	RET_SETGRENT	int
+#else
+#define	RET_SETGRENT	void
+#endif
+
+struct pwf
+{
+	int		    _altdir;
+	void		  (*_setpwent)(void);
+	void		  (*_endpwent)(void);
+	struct passwd * (*_getpwent)(void);
+	struct passwd	* (*_getpwuid)(uid_t uid);
+	struct passwd	* (*_getpwnam)(const char * nam);
+	RET_SETGRENT	  (*_setgrent)(void);
+	void		  (*_endgrent)(void);
+	struct group  * (*_getgrent)(void);
+	struct group  * (*_getgrgid)(gid_t gid);
+	struct group  * (*_getgrnam)(const char * nam);
+};
+
+extern struct pwf PWF;
+extern struct pwf VPWF;
+
+#define SETPWENT()	PWF._setpwent()
+#define ENDPWENT()	PWF._endpwent()
+#define GETPWENT()	PWF._getpwent()
+#define GETPWUID(uid)	PWF._getpwuid(uid)
+#define GETPWNAM(nam)	PWF._getpwnam(nam)
+
+#define SETGRENT()	PWF._setgrent()
+#define ENDGRENT()	PWF._endgrent()
+#define GETGRENT()	PWF._getgrent()
+#define GETGRGID(gid)	PWF._getgrgid(gid)
+#define GETGRNAM(nam)	PWF._getgrnam(nam)
+
+#define PWALTDIR()	PWF._altdir
+#ifndef _PATH_PWD
+#define _PATH_PWD	"/etc"
+#endif
+#ifndef _GROUP
+#define _GROUP		"group"
+#endif
+#ifndef _MASTERPASSWD
+#define _MASTERPASSWD	"master.passwd"
+#endif
+
+__BEGIN_DECLS
+int addpwent(struct passwd * pwd);
+int delpwent(struct passwd * pwd);
+int chgpwent(char const * login, struct passwd * pwd);
+
+int setpwdir(const char * dir);
+char * getpwpath(char const * file);
+
+int addgrent(struct group * grp);
+int delgrent(struct group * grp);
+int chggrent(char const * name, struct group * grp);
+int editgroups(char *name, char **groups);
+
+int setgrdir(const char * dir);
+char * getgrpath(const char *file);
+
+void vsetpwent(void);
+void vendpwent(void);
+struct passwd * vgetpwent(void);
+struct passwd * vgetpwuid(uid_t uid);
+struct passwd * vgetpwnam(const char * nam);
+
+struct group * vgetgrent(void);
+struct group * vgetgrgid(gid_t gid);
+struct group * vgetgrnam(const char * nam);
+RET_SETGRENT   vsetgrent(void);
+void           vendgrent(void);
+
+void copymkdir(char const * dir, char const * skel, mode_t mode, uid_t uid, gid_t gid);
+void rm_r(char const * dir, uid_t uid);
+int extendline(char **buf, int *buflen, int needed);
+int extendarray(char ***buf, int *buflen, int needed);
+__END_DECLS
+
+#define PWBUFSZ 1024
+
+#endif				/* !_PWUPD_H */