Version number, name, and build details.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

.gitignore

@@ -8,3 +8,4 @@ TAGS
 ccan/tools/configurator/configurator
 libsecp256k1.a
 libsecp256k1.la
+gen_*

Makefile

@@ -1,4 +1,5 @@
 #! /usr/bin/make
+NAME=MtGox's Cold Wallet
 
 # Needs to have oneof support: Ubuntu vivid's is too old :(
 PROTOCC:=protoc-c
@@ -12,11 +13,11 @@ PROGRAMS := test-cli/open-channel test-cli/create-anchor-tx test-cli/open-commit
 
 BITCOIN_OBJS := bitcoin/address.o bitcoin/base58.o bitcoin/pubkey.o bitcoin/script.o bitcoin/shadouble.o bitcoin/signature.o bitcoin/tx.o
 
-HELPER_OBJS := lightning.pb-c.o pkt.o permute_tx.o commit_tx.o opt_bits.o close_tx.o find_p2sh_out.o protobuf_convert.o funding.o test-cli/gather_updates.o
+HELPER_OBJS := lightning.pb-c.o pkt.o permute_tx.o commit_tx.o opt_bits.o close_tx.o find_p2sh_out.o protobuf_convert.o funding.o test-cli/gather_updates.o version.o
 
 CCAN_OBJS := ccan-crypto-sha256.o ccan-crypto-shachain.o ccan-err.o ccan-tal.o ccan-tal-str.o ccan-take.o ccan-list.o ccan-str.o ccan-opt-helpers.o ccan-opt.o ccan-opt-parse.o ccan-opt-usage.o ccan-read_write_all.o ccan-str-hex.o ccan-tal-grab_file.o ccan-noerr.o ccan-crypto-ripemd160.o
 
-HEADERS := $(wildcard *.h) $(wildcard bitcoin/*.h)
+HEADERS := $(filter-out gen_*, $(wildcard *.h)) $(wildcard bitcoin/*.h)
 
 CCANDIR := ccan/
 CFLAGS := -g -Wall -I $(CCANDIR) -I secp256k1/include/ -DVALGRIND_HEADERS=1 $(FEATURES)
@@ -52,6 +53,12 @@ doc/deployable-lightning.pdf: doc/deployable-lightning.lyx doc/bitcoin.bib
 doc/deployable-lightning.tex: doc/deployable-lightning.lyx
 	lyx -E latex $@ $<
 
+gen_version.h: FORCE
+	@(echo "#define VERSION \"`git describe --always --dirty`\"" && echo "#define VERSION_NAME \"$(NAME)\"" && echo "#define BUILD_FEATURES \"$(FEATURES)\"") > $@.new
+	@if cmp $@.new $@ >/dev/null 2>&2; then rm -f $@.new; else mv $@.new $@; fi
+
+version.o: gen_version.h
+
 update-ccan:
 	mv ccan ccan.old
 	DIR=$$(pwd)/ccan; cd ../ccan && ./tools/create-ccan-tree -a $$DIR `cd $$DIR.old/ccan && find * -name _info | sed s,/_info,, | sort` $(CCAN_NEW)
@@ -63,7 +70,7 @@ update-ccan:
 	$(RM) -r ccan.old
 
 distclean: clean
-	$(RM) lightning.pb-c.c lightning.pb-c.h ccan/config.h
+	$(RM) lightning.pb-c.c lightning.pb-c.h ccan/config.h gen_version.h
 	$(RM) doc/deployable-lightning.pdf
 
 clean:

test-cli/check-commit-sig.c

@@ -15,6 +15,7 @@
 #include "bitcoin/privkey.h"
 #include "protobuf_convert.h"
 #include "funding.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -37,6 +38,7 @@ int main(int argc, char *argv[])
 			   "<open-channel-file1> <open-channel-file2> <open-anchor-file1> <commit-key1> [<commit-sig>]\n"
 			   "Check the commit sig is valid (either in open-anchor or commit-sig packet)",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/close-channel.c

@@ -20,6 +20,7 @@
 #include "protobuf_convert.h"
 #include "gather_updates.h"
 #include "opt_bits.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -50,6 +51,7 @@ int main(int argc, char *argv[])
 	opt_register_arg("--close-fee=<bits>",
 			 opt_set_bits, opt_show_bits, &close_fee,
 			 "100's of satoshi to pay for close tx");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/create-anchor-tx.c

@@ -18,6 +18,7 @@
 #include <unistd.h>
 #include <time.h>
 #include "opt_bits.h"
+#include "version.h"
 
 /* Bitcoin nodes are allowed to be 2 hours in the future. */ 
 #define LOCKTIME_MIN (2 * 60 * 60)
@@ -92,6 +93,7 @@ int main(int argc, char *argv[])
 	opt_register_arg("--anchor-fee=<bits>",
 			 opt_set_bits, opt_show_bits, &anchor_fee,
 			 "100's of satoshi to pay for anchor");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/create-close-tx.c

@@ -16,6 +16,7 @@
 #include "protobuf_convert.h"
 #include "gather_updates.h"
 #include "funding.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -38,6 +39,7 @@ int main(int argc, char *argv[])
 			   "<open-channel-file1> <open-channel-file2> <open-anchor-file> <close-protobuf> <close-complete-protobuf> [update-protobuf]...\n"
 			   "Create the close transaction from the signatures",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/create-commit-spend-tx.c

@@ -20,6 +20,7 @@
 #include "protobuf_convert.h"
 #include "test-cli/gather_updates.h"
 #include "funding.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -49,6 +50,7 @@ int main(int argc, char *argv[])
 	opt_register_arg("--fee=<bits>",
 			 opt_set_bits, opt_show_bits, &fee,
 			 "100's of satoshi to pay in transaction fee");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/create-commit-tx.c

@@ -17,6 +17,7 @@
 #include "protobuf_convert.h"
 #include "gather_updates.h"
 #include "funding.h"
+#include "version.h"
 #include <unistd.h>
 
 /* FIXME: this code doesn't work if we're not the ones proposing the delta */
@@ -40,6 +41,7 @@ int main(int argc, char *argv[])
 			   "<open-channel-file1> <open-channel-file2> <open-anchor-file> <commit-privkey> [<updates>]\n"
 			   "Create the signature needed for the commit transaction",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/create-htlc-spend-tx.c

@@ -16,6 +16,7 @@
 #include "bitcoin/privkey.h"
 #include "protobuf_convert.h"
 #include "find_p2sh_out.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -48,6 +49,7 @@ int main(int argc, char *argv[])
 			   "Create a transaction which spends commit-tx's htlc output, and sends it P2SH to outpubkey\n"
 			   "It relies on timeout, unless --rvalue or --commit-preimage is specified",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/create-steal-tx.c

@@ -14,6 +14,7 @@
 #include "bitcoin/pubkey.h"
 #include "bitcoin/privkey.h"
 #include "protobuf_convert.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -37,6 +38,7 @@ int main(int argc, char *argv[])
 			   "<commit-tx> <revocation-preimage> <final-privkey> <open-channel-file1> <open-channel-file2> <outpubkey>\n"
 			   "Create a transaction which spends commit-tx's revocable output, and sends it P2SH to outpubkey",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/get-anchor-depth.c

@@ -12,6 +12,7 @@
 #include "bitcoin/signature.h"
 #include "commit_tx.h"
 #include "bitcoin/pubkey.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -25,6 +26,7 @@ int main(int argc, char *argv[])
 			   "<open-channel-file>\n"
 			   "Prints anchor depth as contained in OpenChannel message",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/leak-anchor-sigs.c

@@ -18,6 +18,7 @@ int main(int argc, char *argv[])
 			   "<open-anchor-sig-file>\n"
 			   "Create LeakAnchorSigsAndPretendWeDidnt to stdout",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/open-anchor.c

@@ -21,6 +21,7 @@
 #include <unistd.h>
 #include <time.h>
 #include "opt_bits.h"
+#include "version.h"
 
 int main(int argc, char *argv[])
 {
@@ -44,6 +45,7 @@ int main(int argc, char *argv[])
 			   "<open-channel-file1> <open-channel-file2> <anchor-tx-file> <commit-privkey1>\n"
 			   "A test program to output open_anchor message on stdout.",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/open-channel.c

@@ -18,6 +18,7 @@
 #include <unistd.h>
 #include <time.h>
 #include "opt_bits.h"
+#include "version.h"
 
 /* Bitcoin nodes are allowed to be 2 hours in the future. */ 
 #define LOCKTIME_MIN (2 * 60 * 60)
@@ -58,6 +59,7 @@ int main(int argc, char *argv[])
 	opt_register_arg("--commitment-fee=<bits>",
 			 opt_set_bits, opt_show_bits, &commit_tx_fee,
 			 "100's of satoshi to pay for commitment");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/open-commit-sig.c

@@ -16,6 +16,7 @@
 #include "bitcoin/privkey.h"
 #include "protobuf_convert.h"
 #include "funding.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -39,6 +40,7 @@ int main(int argc, char *argv[])
 			   "<open-channel-file1> <open-channel-file2> <open-anchor-file1> <commit-privkey>\n"
 			   "Create the signature needed for the commit transaction",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/txid-of.c

@@ -6,6 +6,7 @@
 #include <ccan/str/hex/hex.h>
 #include <ccan/err/err.h>
 #include "bitcoin/tx.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -22,6 +23,7 @@ int main(int argc, char *argv[])
 			   "<tx>\n"
 			   "Print txid of the transaction in the file",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/update-channel-accept.c

@@ -18,6 +18,7 @@
 #include "protobuf_convert.h"
 #include "gather_updates.h"
 #include "funding.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -42,6 +43,7 @@ int main(int argc, char *argv[])
 			   "<seed> <open-channel-file1> <open-channel-file2> <open-anchor-file> <commit-privkey> <all-updates...>\n"
 			   "Accept a new update message",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/update-channel-complete.c

@@ -18,6 +18,7 @@
 #include "protobuf_convert.h"
 #include "gather_updates.h"
 #include "funding.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -40,6 +41,7 @@ int main(int argc, char *argv[])
 			   "<seed> <open-channel-file1> <open-channel-file2> <open-anchor-file> <all-previous-updates>\n"
 			   "Create a new update-complete message",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/update-channel-htlc-complete.c

@@ -14,6 +14,7 @@
 #include "commit_tx.h"
 #include "bitcoin/pubkey.h"
 #include "find_p2sh_out.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -29,6 +30,7 @@ int main(int argc, char *argv[])
 			   "<seed> <update-number> <r-value>\n"
 			   "Create a new HTLC complete message",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/update-channel-htlc-remove.c

@@ -15,6 +15,7 @@
 #include "bitcoin/pubkey.h"
 #include "find_p2sh_out.h"
 #include "protobuf_convert.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -31,6 +32,7 @@ int main(int argc, char *argv[])
 			   "<seed> <update-number> <update-pkt>\n"
 			   "Create a new HTLC remove message",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/update-channel-htlc.c

@@ -14,6 +14,7 @@
 #include "commit_tx.h"
 #include "bitcoin/pubkey.h"
 #include "find_p2sh_out.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -32,6 +33,7 @@ int main(int argc, char *argv[])
 			   "<seed> <update-number> <satoshi> <r-value> <abs-locktime-seconds>\n"
 			   "Create a new HTLC update message",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/update-channel-signature.c

@@ -18,6 +18,7 @@
 #include "protobuf_convert.h"
 #include "gather_updates.h"
 #include "funding.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -42,6 +43,7 @@ int main(int argc, char *argv[])
 			   "<seed> <open-channel-file1> <open-channel-file2> <open-anchor-file> <commit-privkey> <all-previous-updates>...\n"
 			   "Create a new update-channel-signature message",
 			   "Print this message.");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

test-cli/update-channel.c

@@ -14,6 +14,7 @@
 #include "commit_tx.h"
 #include "bitcoin/pubkey.h"
 #include "find_p2sh_out.h"
+#include "version.h"
 #include <unistd.h>
 
 int main(int argc, char *argv[])
@@ -37,6 +38,7 @@ int main(int argc, char *argv[])
 	opt_register_arg("--from-them=<satoshi>",
 			 opt_set_ulonglongval_si, NULL, &from_them,
 			 "Amount to pay us (must use this or --to-them)");
+	opt_register_version();
 
  	opt_parse(&argc, argv, opt_log_stderr_exit);
 

version.c

@@ -0,0 +1,11 @@
+#include "version.h"
+#include "gen_version.h"
+#include <stdio.h>
+
+char *version_and_exit(const void *unused)
+{
+	printf("%s\n"
+	       "aka. %s\n"
+	       "Built with: %s\n", VERSION, VERSION_NAME, BUILD_FEATURES);
+	exit(0);
+}

version.h

@@ -0,0 +1,11 @@
+#ifndef LIGHTNING_VERSION_H
+#define LIGHTNING_VERSION_H
+#include <ccan/opt/opt.h>
+
+char *version_and_exit(const void *unused);
+
+#define opt_register_version()						\
+	opt_register_noarg("--version|-V", version_and_exit, NULL,	\
+			   "print version to standard output and exit")
+
+#endif /* LIGHTNING_VERSION_H */