Add libuserdefs and use in cmd/{oamuser,passwd}

@@ -18,10 +18,12 @@
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  */
 /*
+ * Copyright 2016 Gordon W. Ross
+ *
  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */

@@ -29,44 +31,46 @@
 
 
 #ifndef _USERDEFS_H
 #define _USERDEFS_H
 
-#pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.7.1.1 */
-
 #include <project.h>
+#include <stdio_tag.h>
 
 #ifdef  __cplusplus
 extern "C" {
 #endif
 
 /*
  * The definitions in this file are local to the OA&M subsystem.  General
  * use is not encouraged.
+ *
+ * Default values are taken from (in precedence order)
+ *      /etc/default/add{user,role}
+ *      /usr/sadm/defadd{user,role}
+ *      (compiled-in values)
+ *
+ * Note that the "old" default locations may be used as a
+ * "vendor" (or distro.) override of the compiled-in defaults.
+ * If an administrator runs "useradd -D ...", those values are
+ * stored in /etc/default/add*,  which overrides all others.
  */
 
-/* User/group default values */
-#define DEFGID          99      /* max reserved group id */
-#define DEFRID          99
-#define DEFPROJ         3
-#define DEFPROJNAME     "default"
-#define DEFGROUP        1
-#define DEFGNAME        "other"
-#define DEFPARENT       "/home"
-#define DEFSKL          "/etc/skel"
-#define DEFSHL          "/bin/sh"
-#define DEFROLESHL      "/bin/pfsh"
-#define DEFINACT        0
-#define DEFEXPIRE       ""
-#define DEFAUTH         ""
-#define DEFPROF         ""
-#define DEFROLEPROF     "All"
-#define DEFROLE         ""
-#define DEFLIMPRIV      ""
-#define DEFDFLTPRIV     ""
-#define DEFLOCK_AFTER_RETRIES   ""
+/* Defaults files */
+#define DEFFILE         "/etc/default/adduser"
+#define DEFROLEFILE     "/etc/default/addrole"
 
+/* Old defaults files */
+#define ODEFFILE        "/usr/sadm/defadduser"
+#define ODEFROLEFILE    "/usr/sadm/defaddrole"
+
+#define GROUP           "/etc/group"
+
+/* various limits */
+#define MAXGLEN         9       /* max length of group name */
+#define MAXDLEN         80      /* max length of a date string */
+
 /* Defaults file keywords */
 #define RIDSTR          "defrid="
 #define GIDSTR          "defgroup="
 #define GNAMSTR         "defgname="
 #define PARSTR          "defparent="

@@ -83,19 +87,10 @@
 #define DFLTPRSTR       "defdefaultpriv="
 #define FHEADER         "#      Default values for useradd.  Changed "
 #define FHEADER_ROLE    "#      Default values for roleadd.  Changed "
 #define LOCK_AFTER_RETRIESSTR   "deflock_after_retries="
 
-/* Defaults file */
-#define DEFFILE         "/usr/sadm/defadduser"
-#define DEFROLEFILE     "/usr/sadm/defaddrole"
-#define GROUP           "/etc/group"
-
-/* various limits */
-#define MAXGLEN         9       /* max length of group name */
-#define MAXDLEN         80      /* max length of a date string */
-
 /* defaults structure */
 struct userdefs {
         int defrid;             /* highest reserved uid */
         int defgroup;           /* default group id */
         char *defgname;         /* default group name */

@@ -110,13 +105,70 @@
         projid_t defproj;       /* default project id */
         char *defprojname;      /* default project name */
         char *deflimpriv;       /* default limitpriv */
         char *defdfltpriv;      /* default defaultpriv */
         char *deflock_after_retries;    /* default lock_after_retries */
-
 };
 
+extern struct userdefs *_get_userdefs(void);
+extern struct userdefs *_get_roledefs(void);
+
+extern void fread_defs(FILE *fp, struct userdefs *, boolean_t);
+extern int fwrite_roledefs(struct __FILE *, struct userdefs *);
+extern int fwrite_userdefs(struct __FILE *, struct userdefs *);
+
+extern char *userdef_get_by_uakey(struct userdefs *, const char *);
+void userdef_set_by_uakey(struct userdefs *, const char *, char *);
+
+/*
+ * User/group default values
+ * These are constants _only_ when compiling libuserdefs
+ */
+#ifdef _USERDEFS_INTERNAL
+#define DEFRID          99      /* max reserved group id */
+#define DEFGROUP        1
+#define DEFGNAME        "other"
+#define DEFPARENT       "/home"
+#define DEFSKL          "/etc/skel"
+#define DEFSHL          "/bin/sh"
+#define DEFROLESHL      "/bin/pfsh"
+#define DEFINACT        0
+#define DEFEXPIRE       ""
+#define DEFAUTH         ""
+#define DEFPROF         ""
+#define DEFROLEPROF     "All"
+#define DEFROLE         ""
+#define DEFPROJ         3
+#define DEFPROJNAME     "default"
+#define DEFLIMPRIV      ""
+#define DEFDFLTPRIV     ""
+#define DEFLOCK_AFTER_RETRIES   ""
+#else   /* _USERDEFS_INTERNAL */
+/* Get these from libuserdefs */
+#define DEFRID          (_get_userdefs()->defrid)
+#define DEFGROUP        (_get_userdefs()->defgroup)
+#define DEFGNAME        (_get_userdefs()->defgname)
+#define DEFPARENT       (_get_userdefs()->defparent)
+#define DEFSKL          (_get_userdefs()->defskel)
+#define DEFSHL          (_get_userdefs()->defshell)
+#define DEFROLESHL      (_get_roledefs()->defshell)     /* ROLE */
+#define DEFINACT        (_get_userdefs()->definact)
+#define DEFEXPIRE       (_get_userdefs()->defexpire)
+#define DEFAUTH         (_get_userdefs()->defauth)
+#define DEFPROF         (_get_userdefs()->defprof
+#define DEFROLEPROF     (_get_roledefs()->defprof)      /* ROLE */
+#define DEFROLE         (_get_userdefs()->defrole)
+#define DEFPROJ         (_get_userdefs()->defproj)
+#define DEFPROJNAME     (_get_userdefs()->defprogname)
+#define DEFLIMPRIV      (_get_userdefs()->deflimpriv)
+#define DEFDFLTPRIV     (_get_userdefs()->defdfltpriv)
+#define DEFLOCK_AFTER_RETRIES   (_get_userdefs()->deflock_after_retries)
+#endif  /* _USERDEFS_INTERNAL */
+
+/* DEFGID is an alias for DEFRID.  Misleading... (!= DEFGROUP) */
+#define DEFGID          DEFRID          /* XXX delete this? */
+
 /* exit() values for user/group commands */
 
 /* Everything succeeded */
 #define EX_SUCCESS      0