print proxychains version on DLL init

framework to print version stolen from musl

.gitignore

@@ -8,6 +8,7 @@
 *.out
 *~
 *.patch
+version.h
 
 # Autoconf stuff 
 libtool

Makefile

@@ -15,11 +15,13 @@ sysconfdir=$(prefix)/etc
 
 SRCS = $(sort $(wildcard src/*.c))
 OBJS = $(SRCS:.c=.o)
-LOBJS = src/nameinfo.o \
+LOBJS = src/nameinfo.o src/version.o \
         src/core.o src/common.o src/libproxychains.o src/shm.o \
         src/allocator_thread.o src/ip_type.o src/stringdump.o \
         src/hostentdb.o src/hash.o src/debug.o
 
+GENH = src/version.h
+
 CFLAGS  += -Wall -O0 -g -std=c99 -D_GNU_SOURCE -pipe
 NO_AS_NEEDED = -Wl,--no-as-needed
 LIBDL   = -ldl
@@ -61,6 +63,12 @@ clean:
 	rm -f $(ALL_LIBS)
 	rm -f $(ALL_TOOLS)
 	rm -f $(OBJS)
+	rm -f $(GENH)
+
+src/version.h: $(wildcard VERSION .git)
+	printf '#define VERSION "%s"\n' "$$(sh tools/version.sh)" > $@
+
+src/version.o: src/version.h
 
 %.o: %.c
 	$(CC) $(CPPFLAGS) $(CFLAGS) $(CFLAGS_MAIN) $(INC) $(PIC) -c -o $@ $<

VERSION

@@ -0,0 +1 @@
+4.7

src/libproxychains.c

@@ -98,6 +98,8 @@ static void* load_sym(char* symname, void* proxyfunc) {
 #include "allocator_thread.h"
 #include "stringdump.h"
 
+const char *proxychains_get_version(void);
+
 static void do_init(void) {
 	srand(time(NULL));
 	dumpstring_init(); // global string garbage can
@@ -108,7 +110,7 @@ static void do_init(void) {
 	get_chain_data(proxychains_pd, &proxychains_proxy_count, &proxychains_ct);
 	DUMP_PROXY_CHAIN(proxychains_pd, proxychains_proxy_count);
 
-	proxychains_write_log(LOG_PREFIX "DLL init\n");
+	proxychains_write_log(LOG_PREFIX "DLL init: proxychains-ng %s\n", proxychains_get_version());
 
 	SETUP_SYM(connect);
 	SETUP_SYM(gethostbyname);

src/version.c

@@ -0,0 +1,6 @@
+#include "version.h"
+static const char version[] = VERSION;
+const char *proxychains_get_version(void) {
+	return version;
+}
+

tools/version.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+if test -d .git ; then
+if type git >/dev/null 2>&1 ; then
+git describe --tags --match 'v[0-9]*' 2>/dev/null \
+| sed -e 's/^v//' -e 's/-/-git-/'
+else
+sed 's/$/-git/' < VERSION
+fi
+else
+cat VERSION
+fi