1 files changed, 115 insertions, 0 deletions
diff --git a/lib/roken/vsyslog.c b/lib/roken/vsyslog.c
new file mode 100644
index 0000000..690eb7d
--- /dev/null
+++ b/lib/roken/vsyslog.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+RCSID("$Id: vsyslog.c 14773 2005-04-12 11:29:18Z lha $");
+#endif
+
+#ifndef HAVE_VSYSLOG
+
+#include <stdio.h>
+#include <syslog.h>
+#include <stdarg.h>
+
+#include "roken.h"
+
+/*
+ * the theory behind this is that we might be trying to call vsyslog
+ * when there's no memory left, and we should try to be as useful as
+ * possible.  And the format string should say something about what's
+ * failing.
+ */
+
+static void
+simple_vsyslog(int pri, const char *fmt, va_list ap)
+{
+    syslog (pri, "%s", fmt);
+}
+
+/*
+ * do like syslog but with a `va_list'
+ */
+
+void ROKEN_LIB_FUNCTION
+vsyslog(int pri, const char *fmt, va_list ap)
+{
+    char *fmt2;
+    const char *p;
+    char *p2;
+    int saved_errno = errno;
+    int fmt_len  = strlen (fmt);
+    int fmt2_len = fmt_len;
+    char *buf;
+
+    fmt2 = malloc (fmt_len + 1);
+    if (fmt2 == NULL) {
+	simple_vsyslog (pri, fmt, ap);
+	return;
+    }
+
+    for (p = fmt, p2 = fmt2; *p != '\0'; ++p) {
+	if (p[0] == '%' && p[1] == 'm') {
+	    const char *e = strerror (saved_errno);
+	    int e_len = strlen (e);
+	    char *tmp;
+	    int pos;
+
+	    pos = p2 - fmt2;
+	    fmt2_len += e_len - 2;
+	    tmp = realloc (fmt2, fmt2_len + 1);
+	    if (tmp == NULL) {
+		free (fmt2);
+		simple_vsyslog (pri, fmt, ap);
+		return;
+	    }
+	    fmt2 = tmp;
+	    p2   = fmt2 + pos;
+	    memmove (p2, e, e_len);
+	    p2 += e_len;
+	    ++p;
+	} else
+	    *p2++ = *p;
+    }
+    *p2 = '\0';
+
+    vasprintf (&buf, fmt2, ap);
+    free (fmt2);
+    if (buf == NULL) {
+	simple_vsyslog (pri, fmt, ap);
+	return;
+    }
+    syslog (pri, "%s", buf);
+    free (buf);
+}
+#endif