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-rw-r--r--src/util/msg_vstream.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/src/util/msg_vstream.c b/src/util/msg_vstream.c
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+/*++
+/* NAME
+/* msg_vstream 3
+/* SUMMARY
+/* report diagnostics to VSTREAM
+/* SYNOPSIS
+/* #include <msg_vstream.h>
+/*
+/* void msg_vstream_init(progname, stream)
+/* const char *progname;
+/* VSTREAM *stream;
+/* DESCRIPTION
+/* This module implements support to report msg(3) diagnostics
+/* to a VSTREAM.
+/*
+/* msg_vstream_init() sets the program name that appears in each output
+/* record, and directs diagnostics (see msg(3)) to the specified
+/* VSTREAM. The \fIprogname\fR argument is not copied.
+/* SEE ALSO
+/* msg(3)
+/* BUGS
+/* No guarantee that long records are written atomically.
+/* Only the last msg_vstream_init() call takes effect.
+/* LICENSE
+/* .ad
+/* .fi
+/* The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/* Wietse Venema
+/* IBM T.J. Watson Research
+/* P.O. Box 704
+/* Yorktown Heights, NY 10598, USA
+/*--*/
+
+/* System libraries. */
+
+#include <sys_defs.h>
+#include <errno.h>
+#include <stdlib.h> /* 44BSD stdarg.h uses abort() */
+#include <stdarg.h>
+
+/* Utility library. */
+
+#include "vstream.h"
+#include "msg.h"
+#include "msg_output.h"
+#include "msg_vstream.h"
+
+ /*
+ * Private state.
+ */
+static const char *msg_tag;
+static VSTREAM *msg_stream;
+
+/* msg_vstream_print - log diagnostic to VSTREAM */
+
+static void msg_vstream_print(int level, const char *text)
+{
+ static const char *level_text[] = {
+ "info", "warning", "error", "fatal", "panic",
+ };
+
+ if (level < 0 || level >= (int) (sizeof(level_text) / sizeof(level_text[0])))
+ msg_panic("invalid severity level: %d", level);
+ if (level == MSG_INFO) {
+ vstream_fprintf(msg_stream, "%s: %s\n",
+ msg_tag, text);
+ } else {
+ vstream_fprintf(msg_stream, "%s: %s: %s\n",
+ msg_tag, level_text[level], text);
+ }
+ vstream_fflush(msg_stream);
+}
+
+/* msg_vstream_init - initialize */
+
+void msg_vstream_init(const char *name, VSTREAM *vp)
+{
+ static int first_call = 1;
+
+ msg_tag = name;
+ msg_stream = vp;
+ if (first_call) {
+ first_call = 0;
+ msg_output(msg_vstream_print);
+ }
+}