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Merge branch 'fm/fetch-raw-sha1'
"git upload-pack" that serves "git fetch" can be told to serve commits that are not at the tip of any ref, as long as they are reachable from a ref, with uploadpack.allowReachableSHA1InWant configuration variable. * fm/fetch-raw-sha1: upload-pack: optionally allow fetching reachable sha1 upload-pack: prepare to extend allow-tip-sha1-in-want config.txt: clarify allowTipSHA1InWant with camelCase
This commit is contained in:
commit
a9d3493380
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@ -2558,14 +2558,20 @@ uploadpack.hideRefs::
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are under the hierarchies listed on the value of this
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variable is excluded, and is hidden from `git ls-remote`,
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`git fetch`, etc. An attempt to fetch a hidden ref by `git
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fetch` will fail. See also `uploadpack.allowtipsha1inwant`.
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fetch` will fail. See also `uploadpack.allowTipSHA1InWant`.
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uploadpack.allowtipsha1inwant::
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uploadpack.allowTipSHA1InWant::
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When `uploadpack.hideRefs` is in effect, allow `upload-pack`
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to accept a fetch request that asks for an object at the tip
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of a hidden ref (by default, such a request is rejected).
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see also `uploadpack.hideRefs`.
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uploadpack.allowReachableSHA1InWant::
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Allow `upload-pack` to accept a fetch request that asks for an
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object that is reachable from any ref tip. However, note that
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calculating object reachability is computationally expensive.
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Defaults to `false`.
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uploadpack.keepAlive::
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When `upload-pack` has started `pack-objects`, there may be a
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quiet period while `pack-objects` prepares the pack. Normally
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@ -319,7 +319,8 @@ Servers SHOULD support all capabilities defined here.
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Clients MUST send at least one "want" command in the request body.
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Clients MUST NOT reference an id in a "want" command which did not
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appear in the response obtained through ref discovery unless the
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server advertises capability `allow-tip-sha1-in-want`.
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server advertises capability `allow-tip-sha1-in-want` or
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`allow-reachable-sha1-in-want`.
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compute_request = want_list
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have_list
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@ -260,6 +260,13 @@ If the upload-pack server advertises this capability, fetch-pack may
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send "want" lines with SHA-1s that exist at the server but are not
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advertised by upload-pack.
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allow-reachable-sha1-in-want
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----------------------------
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If the upload-pack server advertises this capability, fetch-pack may
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send "want" lines with SHA-1s that exist at the server but are not
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advertised by upload-pack.
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push-cert=<nonce>
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-----------------
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17
fetch-pack.c
17
fetch-pack.c
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@ -43,7 +43,12 @@ static int marked;
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#define MAX_IN_VAIN 256
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static struct prio_queue rev_list = { compare_commits_by_commit_date };
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static int non_common_revs, multi_ack, use_sideband, allow_tip_sha1_in_want;
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static int non_common_revs, multi_ack, use_sideband;
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/* Allow specifying sha1 if it is a ref tip. */
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#define ALLOW_TIP_SHA1 01
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/* Allow request of a sha1 if it is reachable from a ref (possibly hidden ref). */
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#define ALLOW_REACHABLE_SHA1 02
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static unsigned int allow_unadvertised_object_request;
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static void rev_list_push(struct commit *commit, int mark)
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{
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@ -542,7 +547,8 @@ static void filter_refs(struct fetch_pack_args *args,
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}
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/* Append unmatched requests to the list */
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if (allow_tip_sha1_in_want) {
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if ((allow_unadvertised_object_request &
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(ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1))) {
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for (i = 0; i < nr_sought; i++) {
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unsigned char sha1[20];
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@ -821,7 +827,12 @@ static struct ref *do_fetch_pack(struct fetch_pack_args *args,
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if (server_supports("allow-tip-sha1-in-want")) {
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if (args->verbose)
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fprintf(stderr, "Server supports allow-tip-sha1-in-want\n");
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allow_tip_sha1_in_want = 1;
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allow_unadvertised_object_request |= ALLOW_TIP_SHA1;
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}
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if (server_supports("allow-reachable-sha1-in-want")) {
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if (args->verbose)
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fprintf(stderr, "Server supports allow-reachable-sha1-in-want\n");
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allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1;
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}
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if (!server_supports("thin-pack"))
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args->use_thin_pack = 0;
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@ -1120,6 +1120,61 @@ test_expect_success 'fetch exact SHA1' '
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)
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'
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for configallowtipsha1inwant in true false
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do
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test_expect_success "shallow fetch reachable SHA1 (but not a ref), allowtipsha1inwant=$configallowtipsha1inwant" '
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mk_empty testrepo &&
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(
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cd testrepo &&
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git config uploadpack.allowtipsha1inwant $configallowtipsha1inwant &&
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git commit --allow-empty -m foo &&
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git commit --allow-empty -m bar
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) &&
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SHA1=$(git --git-dir=testrepo/.git rev-parse HEAD^) &&
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mk_empty shallow &&
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(
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cd shallow &&
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test_must_fail git fetch --depth=1 ../testrepo/.git $SHA1 &&
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git --git-dir=../testrepo/.git config uploadpack.allowreachablesha1inwant true &&
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git fetch --depth=1 ../testrepo/.git $SHA1 &&
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git cat-file commit $SHA1
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)
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'
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test_expect_success "deny fetch unreachable SHA1, allowtipsha1inwant=$configallowtipsha1inwant" '
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mk_empty testrepo &&
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(
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cd testrepo &&
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git config uploadpack.allowtipsha1inwant $configallowtipsha1inwant &&
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git commit --allow-empty -m foo &&
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git commit --allow-empty -m bar &&
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git commit --allow-empty -m xyz
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) &&
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SHA1_1=$(git --git-dir=testrepo/.git rev-parse HEAD^^) &&
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SHA1_2=$(git --git-dir=testrepo/.git rev-parse HEAD^) &&
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SHA1_3=$(git --git-dir=testrepo/.git rev-parse HEAD) &&
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(
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cd testrepo &&
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git reset --hard $SHA1_2 &&
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git cat-file commit $SHA1_1 &&
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git cat-file commit $SHA1_3
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) &&
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mk_empty shallow &&
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(
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cd shallow &&
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test_must_fail git fetch ../testrepo/.git $SHA1_3 &&
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test_must_fail git fetch ../testrepo/.git $SHA1_1 &&
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git --git-dir=../testrepo/.git config uploadpack.allowreachablesha1inwant true &&
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git fetch ../testrepo/.git $SHA1_1 &&
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git cat-file commit $SHA1_1 &&
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test_must_fail git cat-file commit $SHA1_2 &&
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git fetch ../testrepo/.git $SHA1_2 &&
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git cat-file commit $SHA1_2 &&
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test_must_fail git fetch ../testrepo/.git $SHA1_3
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)
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'
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done
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test_expect_success 'fetch follows tags by default' '
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mk_test testrepo heads/master &&
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rm -fr src dst &&
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@ -35,7 +35,11 @@ static int multi_ack;
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static int no_done;
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static int use_thin_pack, use_ofs_delta, use_include_tag;
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static int no_progress, daemon_mode;
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static int allow_tip_sha1_in_want;
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/* Allow specifying sha1 if it is a ref tip. */
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#define ALLOW_TIP_SHA1 01
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/* Allow request of a sha1 if it is reachable from a ref (possibly hidden ref). */
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#define ALLOW_REACHABLE_SHA1 02
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static unsigned int allow_unadvertised_object_request;
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static int shallow_nr;
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static struct object_array have_obj;
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static struct object_array want_obj;
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@ -442,8 +446,9 @@ static int get_common_commits(void)
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static int is_our_ref(struct object *o)
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{
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return o->flags &
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((allow_tip_sha1_in_want ? HIDDEN_REF : 0) | OUR_REF);
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int allow_hidden_ref = (allow_unadvertised_object_request &
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(ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1));
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return o->flags & ((allow_hidden_ref ? HIDDEN_REF : 0) | OUR_REF);
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}
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static void check_non_tip(void)
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@ -456,8 +461,12 @@ static void check_non_tip(void)
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char namebuf[42]; /* ^ + SHA-1 + LF */
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int i;
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/* In the normal in-process case non-tip request can never happen */
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if (!stateless_rpc)
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/*
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* In the normal in-process case without
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* uploadpack.allowReachableSHA1InWant,
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* non-tip requests can never happen.
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*/
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if (!stateless_rpc && !(allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1))
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goto error;
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cmd.argv = argv;
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@ -724,10 +733,13 @@ static int send_ref(const char *refname, const unsigned char *sha1, int flag, vo
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struct strbuf symref_info = STRBUF_INIT;
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format_symref_info(&symref_info, cb_data);
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packet_write(1, "%s %s%c%s%s%s%s agent=%s\n",
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packet_write(1, "%s %s%c%s%s%s%s%s agent=%s\n",
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sha1_to_hex(sha1), refname_nons,
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0, capabilities,
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allow_tip_sha1_in_want ? " allow-tip-sha1-in-want" : "",
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(allow_unadvertised_object_request & ALLOW_TIP_SHA1) ?
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" allow-tip-sha1-in-want" : "",
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(allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1) ?
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" allow-reachable-sha1-in-want" : "",
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stateless_rpc ? " no-done" : "",
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symref_info.buf,
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git_user_agent_sanitized());
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@ -787,9 +799,17 @@ static void upload_pack(void)
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static int upload_pack_config(const char *var, const char *value, void *unused)
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{
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if (!strcmp("uploadpack.allowtipsha1inwant", var))
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allow_tip_sha1_in_want = git_config_bool(var, value);
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else if (!strcmp("uploadpack.keepalive", var)) {
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if (!strcmp("uploadpack.allowtipsha1inwant", var)) {
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if (git_config_bool(var, value))
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allow_unadvertised_object_request |= ALLOW_TIP_SHA1;
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else
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allow_unadvertised_object_request &= ~ALLOW_TIP_SHA1;
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} else if (!strcmp("uploadpack.allowreachablesha1inwant", var)) {
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if (git_config_bool(var, value))
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allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1;
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else
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allow_unadvertised_object_request &= ~ALLOW_REACHABLE_SHA1;
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} else if (!strcmp("uploadpack.keepalive", var)) {
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keepalive = git_config_int(var, value);
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if (!keepalive)
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keepalive = -1;
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