date and time created 83/12/02 17:14:37 by ralph

SCCS-vsn: lib/libc/gen/getpwnamuid.c 4.1

diff --git a/usr/src/lib/libc/gen/getpwnamuid.c b/usr/src/lib/libc/gen/getpwnamuid.c
new file mode 100644 (file)
index 0000000..dae0def
--- /dev/null
+++ b/usr/src/lib/libc/gen/getpwnamuid.c
@@ -0,0 +1,73 @@
+/*     getpwnamuid.c   4.1     83/12/02        */
+
+#include <stdio.h>
+#include <pwd.h>
+#include <ndbm.h>
+
+#include <sys/file.h>
+
+static char PASSWD[] = "/etc/passwd";
+static char EMPTY[] = "";
+static char line[BUFSIZ+1];
+static struct passwd passwd;
+static datum curkey;
+static DBM *db = 0;
+
+static struct passwd *
+fetchpw(key)
+       datum key;
+{
+        register char *cp;
+
+        curkey = key;
+        if (curkey.dptr == 0)
+                return ((struct passwd *)NULL);
+       key = dbmfetch(db, curkey);
+       if (key.dptr == 0)
+                return ((struct passwd *)NULL);
+        cp = key.dptr;
+
+#define        EXPAND(e)       passwd.pw_/**/e = cp; while (*cp++);
+       EXPAND(name);
+       EXPAND(passwd);
+       passwd.pw_uid = *(int *)cp; cp += sizeof (int);
+       passwd.pw_gid = *(int *)cp; cp += sizeof (int);
+       passwd.pw_quota = *(int *)cp; cp += sizeof (int);
+       EXPAND(comment);
+       EXPAND(gecos);
+       EXPAND(dir);
+       EXPAND(shell);
+        return (&passwd);
+}
+
+struct passwd *
+getpwnam(nam)
+       char *nam;
+{
+        datum key;
+       register struct passwd *pw;
+
+        if ((db = ndbmopen(PASSWD, O_RDONLY)) == (DBM *)0)
+                return ((struct passwd *)NULL);
+        key.dptr = nam;
+        key.dsize = strlen(nam);
+       pw = fetchpw(key);
+       ndbmclose(db);
+        return (pw);
+}
+
+struct passwd *
+getpwuid(uid)
+       int uid;
+{
+        datum key;
+       register struct passwd *pw;
+
+        if ((db = ndbmopen(PASSWD, O_RDONLY)) == (DBM *)0)
+                return ((struct passwd *)NULL);
+        key.dptr = (char *) &uid;
+        key.dsize = sizeof uid;
+       pw = fetchpw(key);
+       ndbmclose(db);
+        return (pw);
+}