[PATCH v2 9/9] Add a config option push.gpgSign for default signed pushes

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Signed-off-by: Dave Borowitz <dborowitz@xxxxxxxxxx>
---
 Documentation/config.txt |  8 ++++++++
 builtin/push.c           | 50 ++++++++++++++++++++++++++++++++++--------------
 builtin/send-pack.c      | 27 +++++++++++++++++++++++++-
 3 files changed, 70 insertions(+), 15 deletions(-)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 016f6e9..4ba0e4b 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -2178,6 +2178,14 @@ push.followTags::
 	may override this configuration at time of push by specifying
 	'--no-follow-tags'.
 
+push.gpgSign::
+	May be set to a boolean value, or the string 'if-asked'. A true
+	value causes all pushes to be GPG signed, as if '--signed' is
+	passed to linkgit:git-push[1]. The string 'if-asked' causes
+	pushes to be signed if the server supports it, as if
+	'--signed=if-asked' is passed to 'git push'. A false value may
+	override a value from a lower-priority config file. An explicit
+	command-line flag always overrides this config option.
 
 rebase.stat::
 	Whether to show a diffstat of what changed upstream since the last
diff --git a/builtin/push.c b/builtin/push.c
index 85a82cd..3bda430 100644
--- a/builtin/push.c
+++ b/builtin/push.c
@@ -472,6 +472,24 @@ static int option_parse_recurse_submodules(const struct option *opt,
 	return 0;
 }
 
+static void set_push_cert_flags(int *flags, int v)
+{
+	switch (v) {
+	case SEND_PACK_PUSH_CERT_NEVER:
+		*flags &= ~(TRANSPORT_PUSH_CERT_ALWAYS | TRANSPORT_PUSH_CERT_IF_ASKED);
+		break;
+	case SEND_PACK_PUSH_CERT_ALWAYS:
+		*flags |= TRANSPORT_PUSH_CERT_ALWAYS;
+		*flags &= ~TRANSPORT_PUSH_CERT_IF_ASKED;
+		break;
+	case SEND_PACK_PUSH_CERT_IF_ASKED:
+		*flags |= TRANSPORT_PUSH_CERT_IF_ASKED;
+		*flags &= ~TRANSPORT_PUSH_CERT_ALWAYS;
+		break;
+	}
+}
+
+
 static int git_push_config(const char *k, const char *v, void *cb)
 {
 	int *flags = cb;
@@ -487,6 +505,23 @@ static int git_push_config(const char *k, const char *v, void *cb)
 		else
 			*flags &= ~TRANSPORT_PUSH_FOLLOW_TAGS;
 		return 0;
+	} else if (!strcmp(k, "push.gpgsign")) {
+		const char *value;
+		if (!git_config_get_value("push.gpgsign", &value)) {
+			switch (git_config_maybe_bool("push.gpgsign", value)) {
+			case 0:
+				set_push_cert_flags(flags, SEND_PACK_PUSH_CERT_NEVER);
+				break;
+			case 1:
+				set_push_cert_flags(flags, SEND_PACK_PUSH_CERT_ALWAYS);
+				break;
+			default:
+				if (value && !strcasecmp(value, "if-asked"))
+					set_push_cert_flags(flags, SEND_PACK_PUSH_CERT_IF_ASKED);
+				else
+					return error("Invalid value for '%s'", k);
+			}
+		}
 	}
 
 	return git_default_config(k, v, NULL);
@@ -538,6 +573,7 @@ int cmd_push(int argc, const char **argv, const char *prefix)
 	packet_trace_identity("push");
 	git_config(git_push_config, &flags);
 	argc = parse_options(argc, argv, prefix, options, push_usage, 0);
+	set_push_cert_flags(&flags, push_cert);
 
 	if (deleterefs && (tags || (flags & (TRANSPORT_PUSH_ALL | TRANSPORT_PUSH_MIRROR))))
 		die(_("--delete is incompatible with --all, --mirror and --tags"));
@@ -552,20 +588,6 @@ int cmd_push(int argc, const char **argv, const char *prefix)
 		set_refspecs(argv + 1, argc - 1, repo);
 	}
 
-	switch (push_cert) {
-	case SEND_PACK_PUSH_CERT_NEVER:
-		flags &= ~(TRANSPORT_PUSH_CERT_ALWAYS | TRANSPORT_PUSH_CERT_IF_ASKED);
-		break;
-	case SEND_PACK_PUSH_CERT_ALWAYS:
-		flags |= TRANSPORT_PUSH_CERT_ALWAYS;
-		flags &= ~TRANSPORT_PUSH_CERT_IF_ASKED;
-		break;
-	case SEND_PACK_PUSH_CERT_IF_ASKED:
-		flags |= TRANSPORT_PUSH_CERT_IF_ASKED;
-		flags &= ~TRANSPORT_PUSH_CERT_ALWAYS;
-		break;
-	}
-
 	rc = do_push(repo, flags);
 	if (rc == -1)
 		usage_with_options(push_usage, options);
diff --git a/builtin/send-pack.c b/builtin/send-pack.c
index 0ce3bc8..f6e5d64 100644
--- a/builtin/send-pack.c
+++ b/builtin/send-pack.c
@@ -97,6 +97,31 @@ static void print_helper_status(struct ref *ref)
 	strbuf_release(&buf);
 }
 
+static int send_pack_config(const char *k, const char *v, void *cb)
+{
+	git_gpg_config(k, v, NULL);
+
+	if (!strcmp(k, "push.gpgsign")) {
+		const char *value;
+		if (!git_config_get_value("push.gpgsign", &value)) {
+			switch (git_config_maybe_bool("push.gpgsign", value)) {
+			case 0:
+				args.push_cert = SEND_PACK_PUSH_CERT_NEVER;
+				break;
+			case 1:
+				args.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
+				break;
+			default:
+				if (value && !strcasecmp(value, "if-asked"))
+					args.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
+				else
+					return error("Invalid value for '%s'", k);
+			}
+		}
+	}
+	return 0;
+}
+
 int cmd_send_pack(int argc, const char **argv, const char *prefix)
 {
 	int i, nr_refspecs = 0;
@@ -153,7 +178,7 @@ int cmd_send_pack(int argc, const char **argv, const char *prefix)
 		OPT_END()
 	};
 
-	git_config(git_gpg_config, NULL);
+	git_config(send_pack_config, NULL);
 	argc = parse_options(argc, argv, prefix, options, send_pack_usage, 0);
 	if (argc > 0) {
 		dest = argv[0];
-- 
2.5.0.276.gf5e568e

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