vpnc: update to maintained github fork

The SVN-based version has not changed in years. Many distros use this
fork as evident here: https://github.com/streambinder/vpnc/issues/14

Compile tested against GnuTLS and OpenSSL on ramips target.

Fixes #14119.

Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>

net/vpnc/Makefile

@@ -8,19 +8,17 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=vpnc
-PKG_REV:=550
-PKG_VERSION:=0.5.3.r$(PKG_REV)
-PKG_RELEASE:=9
+PKG_SOURCE_DATE:=2021-01-31
+PKG_SOURCE_VERSION:=43780cecd7a61668002f73b6f8b9f9ba61af74ad
+PKG_RELEASE:=1
 
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=http://svn.unix-ag.uni-kl.de/vpnc/trunk/
-PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
-PKG_SOURCE_VERSION:=$(PKG_REV)
-PKG_SOURCE_PROTO:=svn
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=https://github.com/streambinder/vpnc
+PKG_MIRROR_HASH:=df833bbe369bb96cb915da9b63e4dded0f676f06bcdada4ef94e56b8d87b187e
 
 PKG_MAINTAINER:=Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
-PKG_LICENSE:=VARIOUS
-PKG_LICENSE_FILES:=COPYING
+PKG_LICENSE:=GPL-3.0-or-later
+PKG_LICENSE_FILES:=LICENSE
 
 PKG_CONFIG_DEPENDS:= \
 	CONFIG_VPNC_GNUTLS \
@@ -36,9 +34,17 @@ endef
 define Package/vpnc
   SECTION:=net
   CATEGORY:=Network
-  DEPENDS:=+libgpg-error +libgcrypt +kmod-tun +VPNC_OPENSSL:libopenssl +VPNC_GNUTLS:libgnutls +vpnc-scripts +resolveip
+  DEPENDS:=\
+	  +libgpg-error \
+	  +libgcrypt \
+	  +kmod-tun \
+	  +VPNC_OPENSSL:libopenssl \
+	  +VPNC_GNUTLS:libgnutls \
+	  +vpnc-scripts \
+	  +resolveip \
+
   TITLE:=VPN client for Cisco EasyVPN
-  URL:=http://www.unix-ag.uni-kl.de/~massar/vpnc/
+  URL:=https://davidepucci.it/doc/vpnc/
   SUBMENU:=VPN
 endef
 
@@ -54,39 +60,28 @@ define Package/vpnc/conffiles
 /etc/vpnc/default.conf
 endef
 
-ifeq ($(CONFIG_VPNC_OPENSSL),y)
-define Build/Compile
-	$(call Build/Compile/Default, \
-		OFLAGS="$(TARGET_CFLAGS)" \
-		OS="Linux" VERSION="$(PKG_VERSION)" \
-		STAGING_DIR="$(STAGING_DIR)" \
-		DESTDIR="$(PKG_INSTALL_DIR)" \
-		OPENSSL_GPL_VIOLATION=yes PREFIX=/usr \
-		all install \
-	)
-endef
-else
+OPENSSL-y:=OPENSSL_GPL_VIOLATION=yes
+
 define Build/Compile
+	mkdir $(PKG_BUILD_DIR)/bin
 	$(call Build/Compile/Default, \
 		OFLAGS="$(TARGET_CFLAGS)" \
-		OS="Linux" VERSION="$(PKG_VERSION)" \
-		STAGING_DIR="$(STAGING_DIR)" \
-		DESTDIR="$(PKG_INSTALL_DIR)" \
-		PREFIX=/usr \
-		all install \
+		OS="Linux" \
+		VERSION="$(PKG_VERSION)" \
+		$(OPENSSL-$(CONFIG_VPNC_OPENSSL)) \
+		vpnc \
 	)
 endef
-endif
 
 define Package/vpnc/install
 	$(INSTALL_DIR) $(1)/lib/netifd/proto
 	$(INSTALL_BIN) ./files/vpnc.sh $(1)/lib/netifd/proto/
 	$(INSTALL_DIR) $(1)/usr/sbin
-	$(CP)	$(PKG_INSTALL_DIR)/usr/sbin/vpnc \
-		$(PKG_INSTALL_DIR)/usr/sbin/vpnc-disconnect \
+	$(CP)	$(PKG_BUILD_DIR)/bin/vpnc \
+		$(PKG_BUILD_DIR)/src/vpnc-disconnect \
 		$(1)/usr/sbin/
 	$(INSTALL_DIR) $(1)/etc/vpnc
-	$(INSTALL_CONF) $(PKG_INSTALL_DIR)/etc/vpnc/default.conf $(1)/etc/vpnc/
+	$(INSTALL_CONF) $(PKG_BUILD_DIR)/src/vpnc.conf $(1)/etc/vpnc/default.conf
 	$(INSTALL_DIR) $(1)/lib/upgrade/keep.d
 	$(INSTALL_DATA) ./files/vpnc.upgrade $(1)/lib/upgrade/keep.d/vpnc
 endef

net/vpnc/patches/001-cross.patch

@@ -1,42 +0,0 @@
---- a/Makefile
-+++ b/Makefile
-@@ -20,7 +20,7 @@
- # $Id: Makefile 539 2013-12-04 13:41:04Z Antonio Borneo $
- 
- DESTDIR=
--PREFIX=/usr/local
-+PREFIX=/usr
- ETCDIR=/etc/vpnc
- BINDIR=$(PREFIX)/bin
- SBINDIR=$(PREFIX)/sbin
-@@ -57,18 +57,15 @@ OBJS = $(addsuffix .o,$(basename $(SRCS)
- CRYPTO_OBJS = $(addsuffix .o,$(basename $(CRYPTO_SRCS)))
- BINOBJS = $(addsuffix .o,$(BINS))
- BINSRCS = $(addsuffix .c,$(BINS))
--VERSION := $(shell sh mk-version)
- RELEASE_VERSION := $(shell cat VERSION)
- 
- CC ?= gcc
--CFLAGS ?= -O3 -g
- CFLAGS += -W -Wall -Wmissing-declarations -Wwrite-strings
--CFLAGS +=  $(shell libgcrypt-config --cflags) $(CRYPTO_CFLAGS)
-+CFLAGS += -O3 -I$(STAGING_DIR)/usr/include -I$(STAGING_DIR)/include $(OFLAGS) $(CRYPTO_CFLAGS)
- CPPFLAGS += -DVERSION=\"$(VERSION)\"
--LDFLAGS ?= -g
--LIBS += $(shell libgcrypt-config --libs) $(CRYPTO_LDADD)
-+LIBS += -L$(STAGING_DIR)/usr/lib -L$(STAGING_DIR)/lib -lgcrypt -lgpg-error $(CRYPTO_LDADD)
- 
--ifeq ($(shell uname -s), SunOS)
-+ifeq ($(OS), SunOS)
- LIBS += -lnsl -lresolv -lsocket
- endif
- ifneq (,$(findstring Apple,$(shell $(CC) --version)))
-@@ -82,7 +79,7 @@ vpnc : $(OBJS) vpnc.o
- 	$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)
- 
- vpnc.8 : vpnc.8.template makeman.pl vpnc
--	./makeman.pl
-+	touch vpnc.8
- 
- cisco-decrypt : cisco-decrypt.o decrypt-utils.o
- 	$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)

net/vpnc/patches/100-musl-compat.patch

@@ -1,42 +0,0 @@
---- a/sysdep.h
-+++ b/sysdep.h
-@@ -37,12 +37,14 @@ int tun_read(int fd, unsigned char *buf,
- int tun_get_hwaddr(int fd, char *dev, uint8_t *hwaddr);
- 
- /***************************************************************************/
--#if defined(__linux__) || defined(__GLIBC__)
-+#if defined(__GLIBC__) || defined(__UCLIBC__)
- #include <error.h>
-+#define HAVE_ERROR     1
-+#endif
- 
-+#if defined(__linux__) || defined(__GLIBC__)
- #define HAVE_VASPRINTF 1
- #define HAVE_ASPRINTF  1
--#define HAVE_ERROR     1
- #define HAVE_UNSETENV  1
- #define HAVE_SETENV    1
- #endif
---- a/sysdep.c
-+++ b/sysdep.c
-@@ -59,6 +59,10 @@
- #if defined(__DragonFly__)
- #include <net/tun/if_tun.h>
- #elif defined(__linux__)
-+# if !defined(__GLIBC__) && !defined(__UCLIBC__)
-+#  define _LINUX_IF_ETHER_H
-+#  include <net/ethernet.h>
-+# endif
- #include <linux/if_tun.h>
- #elif defined(__APPLE__)
- /* no header for tun */
---- a/config.c
-+++ b/config.c
-@@ -28,6 +28,7 @@
- #include <unistd.h>
- #include <string.h>
- #include <errno.h>
-+#include <sys/ttydefaults.h>
- #include <sys/types.h>
- #include <sys/utsname.h>
- #include <sys/wait.h>

net/vpnc/patches/110-openssl-deprecated.patch

@@ -1,5 +1,5 @@
---- a/crypto-openssl.c
-+++ b/crypto-openssl.c
+--- a/src/crypto-openssl.c
++++ b/src/crypto-openssl.c
 @@ -20,6 +20,7 @@
  #include <string.h>
  #include <errno.h>