Try to make pcap_compile() thread-safer.

Always use getaddrinfo() for name-to-address lookups; it's the only
portable API that lets you do those lookups in a thread-safe fashion.
This means we require getaddrinfo(); yes, this leaves older OSes out in
the cold - you'd have to provide your own getaddrinfo() on older OSes
that lack it, just as you now will need to provide versions of Flex and
bison/Berkeley YACC that can support reentrant scanners/parsers on older
OSes that lack it, and compilers capable of supporting some C99 features
on older platforms that lack it.

Try to find reentrant versions of getnetbyname() and getprotobyname();
that's a pain, and, if none are found, we'll just have to hope that the
native versions are thread-safe, which they aren't on NetBSD and
OpenBSD.

1 files changed, 18 insertions, 0 deletions

diff --git a/cmakeconfig.h.in b/cmakeconfig.h.in
index d526c61c..e1630f2a 100644
--- a/cmakeconfig.h.in
+++ b/cmakeconfig.h.in
@@ -9,6 +9,12 @@
 /* Define to 1 if remote packet capture is to be supported */
 #cmakedefine ENABLE_REMOTE 1
 
+/* define if we have the AIX getnetbyname_r() */
+#cmakedefine HAVE_AIX_GETNETBYNAME_R 1
+
+/* define if we have the AIX getprotobyname_r() */
+#cmakedefine HAVE_AIX_GETPROTOBYNAME_R 1
+
 /* define if you have the DAG API */
 #cmakedefine HAVE_DAG_API 1
 
@@ -78,6 +84,12 @@
 /* Define to 1 if you have the <linux/ethtool.h> header file. */
 #cmakedefine HAVE_LINUX_ETHTOOL_H 1
 
+/* define if we have the Linux getnetbyname_r() */
+#cmakedefine HAVE_LINUX_GETNETBYNAME_R 1
+
+/* define if we have the Linux getprotobyname_r() */
+#cmakedefine HAVE_LINUX_GETPROTOBYNAME_R 1
+
 /* Define to 1 if you have the <linux/if_bonding.h> header file. */
 #cmakedefine HAVE_LINUX_IF_BONDING_H 1
 
@@ -147,6 +159,12 @@
 /* On solaris */
 #cmakedefine HAVE_SOLARIS 1
 
+/* define if we have the Solaris/IRIX getnetbyname_r() */
+#cmakedefine HAVE_SOLARIS_IRIX_GETNETBYNAME_R 1
+
+/* define if we have the Solaris/IRIX getprotobyname_r() */
+#cmakedefine HAVE_SOLARIS_IRIX_GETPROTOBYNAME_R 1
+
 /* Define to 1 if you have the <stdint.h> header file. */
 #cmakedefine HAVE_STDINT_H 1