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-rw-r--r--upload-pack.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/upload-pack.c b/upload-pack.c
index be8c724a45..5cb4ac4ccc 100644
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -37,6 +37,8 @@ static int use_thin_pack, use_ofs_delta, use_include_tag;
static int no_progress, daemon_mode;
/* Allow specifying sha1 if it is a ref tip. */
#define ALLOW_TIP_SHA1 01
+/* Allow request of a sha1 if it is reachable from a ref (possibly hidden ref). */
+#define ALLOW_REACHABLE_SHA1 02
static unsigned int allow_unadvertised_object_request;
static int shallow_nr;
static struct object_array have_obj;
@@ -444,7 +446,8 @@ static int get_common_commits(void)
static int is_our_ref(struct object *o)
{
- int allow_hidden_ref = (allow_unadvertised_object_request & ALLOW_TIP_SHA1);
+ int allow_hidden_ref = (allow_unadvertised_object_request &
+ (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1));
return o->flags & ((allow_hidden_ref ? HIDDEN_REF : 0) | OUR_REF);
}
@@ -458,8 +461,12 @@ static void check_non_tip(void)
char namebuf[42]; /* ^ + SHA-1 + LF */
int i;
- /* In the normal in-process case non-tip request can never happen */
- if (!stateless_rpc)
+ /*
+ * In the normal in-process case without
+ * uploadpack.allowReachableSHA1InWant,
+ * non-tip requests can never happen.
+ */
+ if (!stateless_rpc && !(allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1))
goto error;
cmd.argv = argv;
@@ -726,11 +733,13 @@ static int send_ref(const char *refname, const unsigned char *sha1, int flag, vo
struct strbuf symref_info = STRBUF_INIT;
format_symref_info(&symref_info, cb_data);
- packet_write(1, "%s %s%c%s%s%s%s agent=%s\n",
+ packet_write(1, "%s %s%c%s%s%s%s%s agent=%s\n",
sha1_to_hex(sha1), refname_nons,
0, capabilities,
(allow_unadvertised_object_request & ALLOW_TIP_SHA1) ?
" allow-tip-sha1-in-want" : "",
+ (allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1) ?
+ " allow-reachable-sha1-in-want" : "",
stateless_rpc ? " no-done" : "",
symref_info.buf,
git_user_agent_sanitized());
@@ -795,6 +804,11 @@ static int upload_pack_config(const char *var, const char *value, void *unused)
allow_unadvertised_object_request |= ALLOW_TIP_SHA1;
else
allow_unadvertised_object_request &= ~ALLOW_TIP_SHA1;
+ } else if (!strcmp("uploadpack.allowreachablesha1inwant", var)) {
+ if (git_config_bool(var, value))
+ allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1;
+ else
+ allow_unadvertised_object_request &= ~ALLOW_REACHABLE_SHA1;
} else if (!strcmp("uploadpack.keepalive", var)) {
keepalive = git_config_int(var, value);
if (!keepalive)