Update util code and import Kerberos portability glue

Use the Kerberos portability layer from rra-c-util 3.0 and avoid
Kerberos API calls deprecated on Heimdal.  Break util/util.h into
separate header files and update all source files accordingly.

The test suite is not yet updated.  That will come in subsequent
commits.

1 files changed, 96 insertions, 0 deletions

diff --git a/util/messages.h b/util/messages.h
new file mode 100644
index 0000000..ff86f39
--- /dev/null
+++ b/util/messages.h
@@ -0,0 +1,96 @@
+/*
+ * Prototypes for message and error reporting (possibly fatal).
+ *
+ * Copyright 2008, 2010 Board of Trustees, Leland Stanford Jr. University
+ * Copyright (c) 2004, 2005, 2006
+ *     by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1991, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+ *     2002, 2003 by The Internet Software Consortium and Rich Salz
+ *
+ * See LICENSE for licensing terms.
+ */
+
+#ifndef UTIL_MESSAGES_H
+#define UTIL_MESSAGES_H 1
+
+#include <config.h>
+#include <portable/macros.h>
+
+#include <stdarg.h>
+
+BEGIN_DECLS
+
+/* Default to a hidden visibility for all util functions. */
+#pragma GCC visibility push(hidden)
+
+/*
+ * The reporting functions.  The ones prefaced by "sys" add a colon, a space,
+ * and the results of strerror(errno) to the output and are intended for
+ * reporting failures of system calls.
+ */
+void debug(const char *, ...)
+    __attribute__((__nonnull__, __format__(printf, 1, 2)));
+void notice(const char *, ...)
+    __attribute__((__nonnull__, __format__(printf, 1, 2)));
+void sysnotice(const char *, ...)
+    __attribute__((__nonnull__, __format__(printf, 1, 2)));
+void warn(const char *, ...)
+    __attribute__((__nonnull__, __format__(printf, 1, 2)));
+void syswarn(const char *, ...)
+    __attribute__((__nonnull__, __format__(printf, 1, 2)));
+void die(const char *, ...)
+    __attribute__((__nonnull__, __noreturn__, __format__(printf, 1, 2)));
+void sysdie(const char *, ...)
+    __attribute__((__nonnull__, __noreturn__, __format__(printf, 1, 2)));
+
+/*
+ * Set the handlers for various message functions.  All of these functions
+ * take a count of the number of handlers and then function pointers for each
+ * of those handlers.  These functions are not thread-safe; they set global
+ * variables.
+ */
+void message_handlers_debug(int count, ...);
+void message_handlers_notice(int count, ...);
+void message_handlers_warn(int count, ...);
+void message_handlers_die(int count, ...);
+
+/*
+ * Some useful handlers, intended to be passed to message_handlers_*.  All
+ * handlers take the length of the formatted message, the format, a variadic
+ * argument list, and the errno setting if any.
+ */
+void message_log_stdout(int, const char *, va_list, int)
+    __attribute((__nonnull__));
+void message_log_stderr(int, const char *, va_list, int)
+    __attribute((__nonnull__));
+void message_log_syslog_debug(int, const char *, va_list, int)
+    __attribute((__nonnull__));
+void message_log_syslog_info(int, const char *, va_list, int)
+    __attribute((__nonnull__));
+void message_log_syslog_notice(int, const char *, va_list, int)
+    __attribute((__nonnull__));
+void message_log_syslog_warning(int, const char *, va_list, int)
+    __attribute((__nonnull__));
+void message_log_syslog_err(int, const char *, va_list, int)
+    __attribute((__nonnull__));
+void message_log_syslog_crit(int, const char *, va_list, int)
+    __attribute((__nonnull__));
+
+/* The type of a message handler. */
+typedef void (*message_handler_func)(int, const char *, va_list, int);
+
+/* If non-NULL, called before exit and its return value passed to exit. */
+extern int (*message_fatal_cleanup)(void);
+
+/*
+ * If non-NULL, prepended (followed by ": ") to all messages printed by either
+ * message_log_stdout or message_log_stderr.
+ */
+extern const char *message_program_name;
+
+/* Undo default visibility change. */
+#pragma GCC visibility pop
+
+END_DECLS
+
+#endif /* UTIL_MESSAGES_H */