1 files changed, 130 insertions, 0 deletions
diff --git a/src/dns/dns_str_resflags.c b/src/dns/dns_str_resflags.c
new file mode 100644
index 0000000..793da1c
--- /dev/null
+++ b/src/dns/dns_str_resflags.c
@@ -0,0 +1,130 @@
+/*++
+/* NAME
+/*	dns_str_resflags 3
+/* SUMMARY
+/*	convert resolver flags to printable form
+/* SYNOPSIS
+/*	#include <dns.h>
+/*
+/*	const char *dns_str_resflags(mask)
+/*	unsigned long mask;
+/* DESCRIPTION
+/*	dns_str_resflags() converts RES_* resolver(5) flags from internal
+/*	form to printable string. Individual flag names are separated
+/*	with '|'.  The result is overwritten with each call.
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	Google, Inc.
+/*	111 8th Avenue
+/*	New York, NY 10011, USA
+/*
+/*	Viktor Dukhovni
+/*--*/
+
+ /*
+  * System library.
+  */
+#include <sys_defs.h>
+#include <netinet/in.h>
+#include <arpa/nameser.h>
+#include <resolv.h>
+
+ /*
+  * Utility library.
+  */
+#include <name_mask.h>
+
+ /*
+  * DNS library.
+  */
+#include <dns.h>
+
+ /*
+  * Application-specific.
+  */
+
+ /*
+  * This list overlaps with dns_res_opt_masks[] in smtp.c, but there we
+  * permit only a small subset of all possible flags.
+  */
+static const LONG_NAME_MASK resflag_table[] = {
+    "RES_INIT", RES_INIT,
+    "RES_DEBUG", RES_DEBUG,
+#if defined(RES_AAONLY) && !HAVE_GLIBC_API_VERSION_SUPPORT(2, 24)
+    "RES_AAONLY", RES_AAONLY,
+#endif
+    "RES_USEVC", RES_USEVC,
+#if defined(RES_PRIMARY) && !HAVE_GLIBC_API_VERSION_SUPPORT(2, 24)
+    "RES_PRIMARY", RES_PRIMARY,
+#endif
+    "RES_IGNTC", RES_IGNTC,
+    "RES_RECURSE", RES_RECURSE,
+    "RES_DEFNAMES", RES_DEFNAMES,
+    "RES_STAYOPEN", RES_STAYOPEN,
+    "RES_DNSRCH", RES_DNSRCH,
+#ifdef RES_INSECURE1
+    "RES_INSECURE1", RES_INSECURE1,
+#endif
+#ifdef RES_INSECURE2
+    "RES_INSECURE2", RES_INSECURE2,
+#endif
+    "RES_NOALIASES", RES_NOALIASES,
+#ifdef RES_USE_INET6
+    "RES_USE_INET6", RES_USE_INET6,
+#endif
+#ifdef RES_ROTATE
+    "RES_ROTATE", RES_ROTATE,
+#endif
+#if defined(RES_NOCHECKNAME) && !HAVE_GLIBC_API_VERSION_SUPPORT(2, 24)
+    "RES_NOCHECKNAME", RES_NOCHECKNAME,
+#endif
+    "RES_USE_EDNS0", RES_USE_EDNS0,
+    "RES_USE_DNSSEC", RES_USE_DNSSEC,
+#if defined(RES_KEEPTSIG) && !HAVE_GLIBC_API_VERSION_SUPPORT(2, 24)
+    "RES_KEEPTSIG", RES_KEEPTSIG,
+#endif
+#if defined(RES_BLAST) && !HAVE_GLIBC_API_VERSION_SUPPORT(2, 24)
+    "RES_BLAST", RES_BLAST,
+#endif
+#ifdef RES_USEBSTRING
+    "RES_USEBSTRING", RES_USEBSTRING,
+#endif
+#ifdef RES_NSID
+    "RES_NSID", RES_NSID,
+#endif
+#ifdef RES_NOIP6DOTINT
+    "RES_NOIP6DOTINT", RES_NOIP6DOTINT,
+#endif
+#ifdef RES_USE_DNAME
+    "RES_USE_DNAME", RES_USE_DNAME,
+#endif
+#ifdef RES_NO_NIBBLE2
+    "RES_NO_NIBBLE2", RES_NO_NIBBLE2,
+#endif
+#ifdef RES_SNGLKUP
+    "RES_SNGLKUP", RES_SNGLKUP,
+#endif
+#ifdef RES_SNGLKUPREOP
+    "RES_SNGLKUPREOP", RES_SNGLKUPREOP,
+#endif
+#ifdef RES_NOTLDQUERY
+    "RES_NOTLDQUERY", RES_NOTLDQUERY,
+#endif
+    0,
+};
+
+/* dns_str_resflags - convert RES_* resolver flags to printable form */
+
+const char *dns_str_resflags(unsigned long mask)
+{
+    static VSTRING *buf;
+
+    if (buf == 0)
+	buf = vstring_alloc(20);
+    return (str_long_name_mask_opt(buf, "dsns_str_resflags", resflag_table,
+				   mask, NAME_MASK_NUMBER | NAME_MASK_PIPE));
+}