[ptxdist] [PATCH] net-snmp: Improved SNMPv3 authentication and privacy support.

[Bruno Thomsen <bth@kamstrup.dk>]

Enabled SHA authentication and AES privacy (encryption) using OpenSSL.
Upgraded from libnl1 to libnl3 dependency.

Tested SNMPv3 with USM (User-based Security Model) SHA auth + AES priv, minimal agent option disabled.

Signed-off-by: Bruno Thomsen <bth@kamstrup.dk>
---
 rules/net-snmp.in   |   12 +++++++++++-
 rules/net-snmp.make |   14 ++++++++++++--
 2 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/rules/net-snmp.in b/rules/net-snmp.in
index 9821328..10bbbd9 100644
--- a/rules/net-snmp.in
+++ b/rules/net-snmp.in
@@ -5,8 +5,10 @@ menuconfig NET_SNMP
 	select LIBC_M
 	select GCCLIBS_GCC_S	if NET_SNMP_AGENT
 	select LIBC_DL		if NET_SNMP_AGENT || NET_SNMP_APPLICATIONS
-	select LIBNL		if NET_SNMP_AGENT || NET_SNMP_APPLICATIONS
+	select LIBNL3		if NET_SNMP_AGENT || NET_SNMP_APPLICATIONS
 	select LM_SENSORS	if NET_SNMP_MIB_MODULES_LM_SENSORS
+	select OPENSSL		if NET_SNMP_SHA_AES
+	select NET_SNMP_PRIVACY	if NET_SNMP_SHA_AES || NET_SNMP_DES
 
 if NET_SNMP
 
@@ -200,6 +202,10 @@ config NET_SNMP_SNMPV2C
 	bool
 	prompt "support for SNMPv2c"
 
+config NET_SNMP_PRIVACY
+	bool
+	prompt "support for privacy (encryption)"
+
 config NET_SNMP_DES
 	bool
 	prompt "DES encryption"
@@ -208,6 +214,10 @@ config NET_SNMP_MD5
 	bool
 	prompt "MD5 authentication"
 
+config NET_SNMP_SHA_AES
+	bool
+	prompt "SHA authentication and AES encryption"
+
 config NET_SNMP_DOM_SOCK_ONLY
 	bool "Disable UDP/TCP transports for agentx" if NET_SNMP_AGENT
 	default y
diff --git a/rules/net-snmp.make b/rules/net-snmp.make
index 6bdecd8..1397c2c 100644
--- a/rules/net-snmp.make
+++ b/rules/net-snmp.make
@@ -47,7 +47,6 @@ NET_SNMP_AUTOCONF := \
 	$(GLOBAL_IPV6_OPTION) \
 	--with-defaults \
 	--disable-manuals \
-	--without-openssl \
 	--with-mib-modules="$(NET_SNMP_MIB_MODULES-y)" \
 	--with-out-mib-modules="$(NET_SNMP_MIB_MODULES-)" \
 	--with-mibs=$(PTXCONF_NET_SNMP_DEFAULT_MIBS) \
@@ -58,7 +57,6 @@ NET_SNMP_AUTOCONF := \
 	--disable-embedded-perl \
 	--without-perl-modules \
 	--disable-static \
-	--disable-privacy \
 	--disable-internal-md5 \
 	--$(call ptx/endis, PTXCONF_NET_SNMP_DOM_SOCK_ONLY)-agentx-dom-sock-only \
 	--enable-mib-config-checking \
@@ -121,6 +119,12 @@ else
 NET_SNMP_AUTOCONF += --disable-snmpv2c
 endif
 
+ifdef PTXCONF_NET_SNMP_PRIVACY
+NET_SNMP_AUTOCONF += --enable-privacy
+else
+NET_SNMP_AUTOCONF += --disable-privacy
+endif
+
 ifdef PTXCONF_NET_SNMP_DES
 NET_SNMP_AUTOCONF += --enable-des
 else
@@ -133,6 +137,12 @@ else
 NET_SNMP_AUTOCONF += --disable-md5
 endif
 
+ifdef PTXCONF_NET_SNMP_SHA_AES
+NET_SNMP_AUTOCONF += --with-openssl
+else
+NET_SNMP_AUTOCONF += --without-openssl
+endif
+
 ifdef PTXCONF_NET_SNMP_SNMPTRAPD
 NET_SNMP_AUTOCONF += --enable-snmptrapd-subagent
 else
-- 
1.7.9.5


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