Initial import of the CDE 2.1.30 sources from the Open Group.

cde/lib/pam/pam_modules/dce/utils.c

@@ -0,0 +1,96 @@
+/* $XConsortium: utils.c /main/4 1996/05/09 04:27:30 drk $ */
+
+/*
+ * Copyright (c) 1992-1995, by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+#ident  "@(#)utils.c 1.13     95/09/19 SMI"
+
+#include <dce/sec_login.h>
+#include <security/pam_appl.h>
+#include <pwd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <malloc.h>
+
+#include "utils.h"
+
+/* ******************************************************************** */
+/*									*/
+/* 		Utilities Functions					*/
+/*									*/
+/* ******************************************************************** */
+
+
+/* return a string given an error status */
+
+unsigned char *
+get_dce_error_message(
+	error_status_t	status,
+	unsigned char	*buffer
+)
+{
+	int s;
+
+	dce_error_inq_text(status, buffer, &s);
+
+	if (s)
+		sprintf((char *)buffer, "DCE error %u", status);
+
+	return (buffer);
+}
+
+/* release login_context resources. if we are returning PAM_SUCCESS */
+/* we also have to save KRB5CCNAME and set it after calling release */
+/* because s_l_release_c unset's it even though we still need it */
+
+void
+pam_sec_login_free_context(
+	int			pam_status,
+	sec_login_handle_t	*login_context,
+	error_status_t		*st)
+{
+	if (pam_status == PAM_SUCCESS) {
+		static char *krb5 = "KRB5CCNAME";
+		char *krb5_value = NULL;
+		char *env = getenv(krb5);
+
+		if (env) {
+			/* we MUST malloc this for the putenv to work! */
+			krb5_value = malloc(strlen(krb5)+1+strlen(env)+1);
+			if (krb5_value)
+				sprintf(krb5_value, "%s=%s", krb5, env);
+		}
+
+		sec_login_release_context(login_context, st);
+
+		if (krb5_value)
+			putenv(krb5_value);
+
+	} else { /* login failed. purge this context */
+
+		sec_login_purge_context(login_context, st);
+	}
+}
+
+/*
+ * get_pw_uid():
+ *	To get the uid from the passwd entry for specified user
+ *	It returns 0 if the user can't be found, otherwise returns 1.
+ */
+
+int
+get_pw_uid(char *user, uid_t *uid)
+{
+	struct passwd sp;
+	char buffer[1024];
+
+	if (getpwnam_r(user, &sp, buffer, sizeof (buffer)) == NULL) {
+		return (0);
+	}
+
+	*uid = sp.pw_uid;
+
+	return (1);
+}