#include "connect.h"
#include "transport.h"
#include "version.h"
-#include "sha1-array.h"
+#include "oid-array.h"
#include "oidset.h"
#include "packfile.h"
#include "object-store.h"
#include "connected.h"
#include "fetch-negotiator.h"
#include "fsck.h"
+#include "shallow.h"
static int transfer_unpack_limit = -1;
static int fetch_unpack_limit = -1;
static int transfer_fsck_objects = -1;
static int agent_supported;
static int server_supports_filtering;
-static struct lock_file shallow_lock;
+static int advertise_sid;
+static struct shallow_lock shallow_lock;
static const char *alternate_shallow_file;
-static char *negotiation_algorithm;
static struct strbuf fsck_msg_types = STRBUF_INIT;
+static struct string_list uri_protocols = STRING_LIST_INIT_DUP;
/* Remember to update object flag allocation in object.h */
#define COMPLETE (1U << 0)
cb(negotiator, cache.items[i]);
}
+static struct commit *deref_without_lazy_fetch(const struct object_id *oid,
+ int mark_tags_complete)
+{
+ enum object_type type;
+ struct object_info info = { .typep = &type };
+
+ while (1) {
+ if (oid_object_info_extended(the_repository, oid, &info,
+ OBJECT_INFO_SKIP_FETCH_OBJECT | OBJECT_INFO_QUICK))
+ return NULL;
+ if (type == OBJ_TAG) {
+ struct tag *tag = (struct tag *)
+ parse_object(the_repository, oid);
+
+ if (!tag->tagged)
+ return NULL;
+ if (mark_tags_complete)
+ tag->object.flags |= COMPLETE;
+ oid = &tag->tagged->oid;
+ } else {
+ break;
+ }
+ }
+ if (type == OBJ_COMMIT)
+ return (struct commit *) parse_object(the_repository, oid);
+ return NULL;
+}
+
static int rev_list_insert_ref(struct fetch_negotiator *negotiator,
- const char *refname,
const struct object_id *oid)
{
- struct object *o = deref_tag(the_repository,
- parse_object(the_repository, oid),
- refname, 0);
-
- if (o && o->type == OBJ_COMMIT)
- negotiator->add_tip(negotiator, (struct commit *)o);
+ struct commit *c = deref_without_lazy_fetch(oid, 0);
+ if (c)
+ negotiator->add_tip(negotiator, c);
return 0;
}
static int rev_list_insert_ref_oid(const char *refname, const struct object_id *oid,
int flag, void *cb_data)
{
- return rev_list_insert_ref(cb_data, refname, oid);
+ return rev_list_insert_ref(cb_data, oid);
}
enum ack_type {
if (!strcmp(reader->line, "NAK"))
return NAK;
if (skip_prefix(reader->line, "ACK ", &arg)) {
- if (!get_oid_hex(arg, result_oid)) {
- arg += 40;
- len -= arg - reader->line;
+ const char *p;
+ if (!parse_oid_hex(arg, result_oid, &p)) {
+ len -= p - reader->line;
if (len < 1)
return ACK;
- if (strstr(arg, "continue"))
+ if (strstr(p, "continue"))
return ACK_continue;
- if (strstr(arg, "common"))
+ if (strstr(p, "common"))
return ACK_common;
- if (strstr(arg, "ready"))
+ if (strstr(p, "ready"))
return ACK_ready;
return ACK;
}
static void insert_one_alternate_object(struct fetch_negotiator *negotiator,
struct object *obj)
{
- rev_list_insert_ref(negotiator, NULL, &obj->oid);
+ rev_list_insert_ref(negotiator, &obj->oid);
}
#define INITIAL_FLUSH 16
int i;
if (!negotiation_tips) {
- for_each_ref(rev_list_insert_ref_oid, negotiator);
+ for_each_rawref(rev_list_insert_ref_oid, negotiator);
return;
}
for (i = 0; i < negotiation_tips->nr; i++)
- rev_list_insert_ref(negotiator, NULL,
- &negotiation_tips->oid[i]);
+ rev_list_insert_ref(negotiator, &negotiation_tips->oid[i]);
return;
}
PACKET_READ_CHOMP_NEWLINE |
PACKET_READ_DIE_ON_ERR_PACKET);
- if (!args->no_dependents) {
- mark_tips(negotiator, args->negotiation_tips);
- for_each_cached_alternate(negotiator, insert_one_alternate_object);
- }
+ mark_tips(negotiator, args->negotiation_tips);
+ for_each_cached_alternate(negotiator, insert_one_alternate_object);
fetching = 0;
for ( ; refs ; refs = refs->next) {
* We use lookup_object here because we are only
* interested in the case we *know* the object is
* reachable and we have already scanned it.
- *
- * Do this only if args->no_dependents is false (if it is true,
- * we cannot trust the object flags).
*/
- if (!args->no_dependents &&
- ((o = lookup_object(the_repository, remote)) != NULL) &&
+ if (((o = lookup_object(the_repository, remote)) != NULL) &&
(o->flags & COMPLETE)) {
continue;
}
if (deepen_not_ok) strbuf_addstr(&c, " deepen-not");
if (agent_supported) strbuf_addf(&c, " agent=%s",
git_user_agent_sanitized());
+ if (advertise_sid)
+ strbuf_addf(&c, " session-id=%s", trace2_session_id());
if (args->filter_options.choice)
strbuf_addstr(&c, " filter");
packet_buf_write(&req_buf, "want %s%s\n", remote_hex, c.buf);
}
}
if (server_supports_filtering && args->filter_options.choice) {
- struct strbuf expanded_filter_spec = STRBUF_INIT;
- expand_list_objects_filter_spec(&args->filter_options,
- &expanded_filter_spec);
- packet_buf_write(&req_buf, "filter %s",
- expanded_filter_spec.buf);
- strbuf_release(&expanded_filter_spec);
+ const char *spec =
+ expand_list_objects_filter_spec(&args->filter_options);
+ packet_buf_write(&req_buf, "filter %s", spec);
}
packet_buf_flush(&req_buf);
state_len = req_buf.len;
state_len = 0;
}
+ trace2_region_enter("fetch-pack", "negotiation_v0_v1", the_repository);
flushes = 0;
retval = -1;
- if (args->no_dependents)
- goto done;
while ((oid = negotiator->next(negotiator))) {
packet_buf_write(&req_buf, "have %s\n", oid_to_hex(oid));
print_verbose(args, "have %s", oid_to_hex(oid));
}
}
done:
+ trace2_region_leave("fetch-pack", "negotiation_v0_v1", the_repository);
if (!got_ready || !no_done) {
packet_buf_write(&req_buf, "done\n");
send_request(args, fd[1], &req_buf);
static int mark_complete(const struct object_id *oid)
{
- struct object *o = parse_object(the_repository, oid);
-
- while (o && o->type == OBJ_TAG) {
- struct tag *t = (struct tag *) o;
- if (!t->tagged)
- break; /* broken repository */
- o->flags |= COMPLETE;
- o = parse_object(the_repository, &t->tagged->oid);
- }
- if (o && o->type == OBJ_COMMIT) {
- struct commit *commit = (struct commit *)o;
- if (!(commit->object.flags & COMPLETE)) {
- commit->object.flags |= COMPLETE;
- commit_list_insert(commit, &complete);
- }
+ struct commit *commit = deref_without_lazy_fetch(oid, 1);
+
+ if (commit && !(commit->object.flags & COMPLETE)) {
+ commit->object.flags |= COMPLETE;
+ commit_list_insert(commit, &complete);
}
return 0;
}
/*
* Mark recent commits available locally and reachable from a local ref as
- * COMPLETE. If args->no_dependents is false, also mark COMPLETE remote refs as
- * COMMON_REF (otherwise, we are not planning to participate in negotiation, and
- * thus do not need COMMON_REF marks).
+ * COMPLETE.
*
* The cutoff time for recency is determined by this heuristic: it is the
* earliest commit time of the objects in refs that are commits and that we know
save_commit_buffer = 0;
+ trace2_region_enter("fetch-pack", "parse_remote_refs_and_find_cutoff", NULL);
for (ref = *refs; ref; ref = ref->next) {
struct object *o;
if (!has_object_file_with_flags(&ref->old_oid,
- OBJECT_INFO_QUICK))
+ OBJECT_INFO_QUICK |
+ OBJECT_INFO_SKIP_FETCH_OBJECT))
continue;
o = parse_object(the_repository, &ref->old_oid);
if (!o)
continue;
- /* We already have it -- which may mean that we were
+ /*
+ * We already have it -- which may mean that we were
* in sync with the other side at some time after
* that (it is OK if we guess wrong here).
*/
cutoff = commit->date;
}
}
+ trace2_region_leave("fetch-pack", "parse_remote_refs_and_find_cutoff", NULL);
+ /*
+ * This block marks all local refs as COMPLETE, and then recursively marks all
+ * parents of those refs as COMPLETE.
+ */
+ trace2_region_enter("fetch-pack", "mark_complete_local_refs", NULL);
if (!args->deepen) {
- for_each_ref(mark_complete_oid, NULL);
+ for_each_rawref(mark_complete_oid, NULL);
for_each_cached_alternate(NULL, mark_alternate_complete);
commit_list_sort_by_date(&complete);
if (cutoff)
mark_recent_complete_commits(args, cutoff);
}
+ trace2_region_leave("fetch-pack", "mark_complete_local_refs", NULL);
/*
* Mark all complete remote refs as common refs.
* Don't mark them common yet; the server has to be told so first.
*/
+ trace2_region_enter("fetch-pack", "mark_common_remote_refs", NULL);
for (ref = *refs; ref; ref = ref->next) {
- struct object *o = deref_tag(the_repository,
- lookup_object(the_repository,
- &ref->old_oid),
- NULL, 0);
+ struct commit *c = deref_without_lazy_fetch(&ref->old_oid, 0);
- if (!o || o->type != OBJ_COMMIT || !(o->flags & COMPLETE))
+ if (!c || !(c->object.flags & COMPLETE))
continue;
- negotiator->known_common(negotiator,
- (struct commit *)o);
+ negotiator->known_common(negotiator, c);
}
+ trace2_region_leave("fetch-pack", "mark_common_remote_refs", NULL);
save_commit_buffer = old_save_commit_buffer;
}
return ret;
}
+static void write_promisor_file(const char *keep_name,
+ struct ref **sought, int nr_sought)
+{
+ struct strbuf promisor_name = STRBUF_INIT;
+ int suffix_stripped;
+ FILE *output;
+ int i;
+
+ strbuf_addstr(&promisor_name, keep_name);
+ suffix_stripped = strbuf_strip_suffix(&promisor_name, ".keep");
+ if (!suffix_stripped)
+ BUG("name of pack lockfile should end with .keep (was '%s')",
+ keep_name);
+ strbuf_addstr(&promisor_name, ".promisor");
+
+ output = xfopen(promisor_name.buf, "w");
+ for (i = 0; i < nr_sought; i++)
+ fprintf(output, "%s %s\n", oid_to_hex(&sought[i]->old_oid),
+ sought[i]->name);
+ fclose(output);
+
+ strbuf_release(&promisor_name);
+}
+
+/*
+ * Pass 1 as "only_packfile" if the pack received is the only pack in this
+ * fetch request (that is, if there were no packfile URIs provided).
+ */
static int get_pack(struct fetch_pack_args *args,
- int xd[2], char **pack_lockfile)
+ int xd[2], struct string_list *pack_lockfiles,
+ int only_packfile,
+ struct ref **sought, int nr_sought)
{
struct async demux;
int do_keep = args->keep_pack;
}
if (alternate_shallow_file) {
- argv_array_push(&cmd.args, "--shallow-file");
- argv_array_push(&cmd.args, alternate_shallow_file);
+ strvec_push(&cmd.args, "--shallow-file");
+ strvec_push(&cmd.args, alternate_shallow_file);
}
if (do_keep || args->from_promisor) {
- if (pack_lockfile)
+ if (pack_lockfiles)
cmd.out = -1;
cmd_name = "index-pack";
- argv_array_push(&cmd.args, cmd_name);
- argv_array_push(&cmd.args, "--stdin");
+ strvec_push(&cmd.args, cmd_name);
+ strvec_push(&cmd.args, "--stdin");
if (!args->quiet && !args->no_progress)
- argv_array_push(&cmd.args, "-v");
+ strvec_push(&cmd.args, "-v");
if (args->use_thin_pack)
- argv_array_push(&cmd.args, "--fix-thin");
+ strvec_push(&cmd.args, "--fix-thin");
if (do_keep && (args->lock_pack || unpack_limit)) {
char hostname[HOST_NAME_MAX + 1];
if (xgethostname(hostname, sizeof(hostname)))
xsnprintf(hostname, sizeof(hostname), "localhost");
- argv_array_pushf(&cmd.args,
- "--keep=fetch-pack %"PRIuMAX " on %s",
- (uintmax_t)getpid(), hostname);
+ strvec_pushf(&cmd.args,
+ "--keep=fetch-pack %"PRIuMAX " on %s",
+ (uintmax_t)getpid(), hostname);
}
- if (args->check_self_contained_and_connected)
- argv_array_push(&cmd.args, "--check-self-contained-and-connected");
+ if (only_packfile && args->check_self_contained_and_connected)
+ strvec_push(&cmd.args, "--check-self-contained-and-connected");
+ else
+ /*
+ * We cannot perform any connectivity checks because
+ * not all packs have been downloaded; let the caller
+ * have this responsibility.
+ */
+ args->check_self_contained_and_connected = 0;
+
if (args->from_promisor)
- argv_array_push(&cmd.args, "--promisor");
+ /*
+ * write_promisor_file() may be called afterwards but
+ * we still need index-pack to know that this is a
+ * promisor pack. For example, if transfer.fsckobjects
+ * is true, index-pack needs to know that .gitmodules
+ * is a promisor object (so that it won't complain if
+ * it is missing).
+ */
+ strvec_push(&cmd.args, "--promisor");
}
else {
cmd_name = "unpack-objects";
- argv_array_push(&cmd.args, cmd_name);
+ strvec_push(&cmd.args, cmd_name);
if (args->quiet || args->no_progress)
- argv_array_push(&cmd.args, "-q");
+ strvec_push(&cmd.args, "-q");
args->check_self_contained_and_connected = 0;
}
if (pass_header)
- argv_array_pushf(&cmd.args, "--pack_header=%"PRIu32",%"PRIu32,
- ntohl(header.hdr_version),
+ strvec_pushf(&cmd.args, "--pack_header=%"PRIu32",%"PRIu32,
+ ntohl(header.hdr_version),
ntohl(header.hdr_entries));
if (fetch_fsck_objects >= 0
? fetch_fsck_objects
: transfer_fsck_objects >= 0
? transfer_fsck_objects
: 0) {
- if (args->from_promisor)
+ if (args->from_promisor || !only_packfile)
/*
* We cannot use --strict in index-pack because it
* checks both broken objects and links, but we only
* want to check for broken objects.
*/
- argv_array_push(&cmd.args, "--fsck-objects");
+ strvec_push(&cmd.args, "--fsck-objects");
else
- argv_array_pushf(&cmd.args, "--strict%s",
- fsck_msg_types.buf);
+ strvec_pushf(&cmd.args, "--strict%s",
+ fsck_msg_types.buf);
}
cmd.in = demux.out;
cmd.git_cmd = 1;
if (start_command(&cmd))
die(_("fetch-pack: unable to fork off %s"), cmd_name);
- if (do_keep && pack_lockfile) {
- *pack_lockfile = index_pack_lockfile(cmd.out);
+ if (do_keep && pack_lockfiles) {
+ char *pack_lockfile = index_pack_lockfile(cmd.out);
+ if (pack_lockfile)
+ string_list_append_nodup(pack_lockfiles, pack_lockfile);
close(cmd.out);
}
die(_("%s failed"), cmd_name);
if (use_sideband && finish_async(&demux))
die(_("error in sideband demultiplexer"));
+
+ /*
+ * Now that index-pack has succeeded, write the promisor file using the
+ * obtained .keep filename if necessary
+ */
+ if (do_keep && pack_lockfiles && pack_lockfiles->nr && args->from_promisor)
+ write_promisor_file(pack_lockfiles->items[0].string, sought, nr_sought);
+
return 0;
}
const struct ref *orig_ref,
struct ref **sought, int nr_sought,
struct shallow_info *si,
- char **pack_lockfile)
+ struct string_list *pack_lockfiles)
{
+ struct repository *r = the_repository;
struct ref *ref = copy_ref_list(orig_ref);
struct object_id oid;
const char *agent_feature;
int agent_len;
- struct fetch_negotiator negotiator;
- fetch_negotiator_init(&negotiator, negotiation_algorithm);
+ struct fetch_negotiator negotiator_alloc;
+ struct fetch_negotiator *negotiator;
+
+ negotiator = &negotiator_alloc;
+ fetch_negotiator_init(r, negotiator);
sort_ref_list(&ref, ref_compare_name);
QSORT(sought, nr_sought, cmp_ref_by_name);
agent_len, agent_feature);
}
+ if (!server_supports("session-id"))
+ advertise_sid = 0;
+
if (server_supports("shallow"))
print_verbose(args, _("Server supports %s"), "shallow");
- else if (args->depth > 0 || is_repository_shallow(the_repository))
+ else if (args->depth > 0 || is_repository_shallow(r))
die(_("Server does not support shallow clients"));
if (args->depth > 0 || args->deepen_since || args->deepen_not)
args->deepen = 1;
print_verbose(args, _("Server supports %s"), "deepen-relative");
else if (args->deepen_relative)
die(_("Server does not support --deepen"));
+ if (!server_supports_hash(the_hash_algo->name, NULL))
+ die(_("Server does not support this repository's object format"));
- if (!args->no_dependents) {
- mark_complete_and_common_ref(&negotiator, args, &ref);
- filter_refs(args, &ref, sought, nr_sought);
- if (everything_local(args, &ref)) {
- packet_flush(fd[1]);
- goto all_done;
- }
- } else {
- filter_refs(args, &ref, sought, nr_sought);
+ mark_complete_and_common_ref(negotiator, args, &ref);
+ filter_refs(args, &ref, sought, nr_sought);
+ if (everything_local(args, &ref)) {
+ packet_flush(fd[1]);
+ goto all_done;
}
- if (find_common(&negotiator, args, fd, &oid, ref) < 0)
+ if (find_common(negotiator, args, fd, &oid, ref) < 0)
if (!args->keep_pack)
/* When cloning, it is not unusual to have
* no common commit.
alternate_shallow_file = setup_temporary_shallow(si->shallow);
else
alternate_shallow_file = NULL;
- if (get_pack(args, fd, pack_lockfile))
+ if (get_pack(args, fd, pack_lockfiles, 1, sought, nr_sought))
die(_("git fetch-pack: fetch failed."));
all_done:
- negotiator.release(&negotiator);
+ if (negotiator)
+ negotiator->release(negotiator);
return ref;
}
packet_buf_write(req_buf, "deepen-relative\n");
}
-static void add_wants(int no_dependents, const struct ref *wants, struct strbuf *req_buf)
+static void add_wants(const struct ref *wants, struct strbuf *req_buf)
{
int use_ref_in_want = server_supports_feature("fetch", "ref-in-want", 0);
* We use lookup_object here because we are only
* interested in the case we *know* the object is
* reachable and we have already scanned it.
- *
- * Do this only if args->no_dependents is false (if it is true,
- * we cannot trust the object flags).
*/
- if (!no_dependents &&
- ((o = lookup_object(the_repository, remote)) != NULL) &&
+ if (((o = lookup_object(the_repository, remote)) != NULL) &&
(o->flags & COMPLETE)) {
continue;
}
}
static int add_haves(struct fetch_negotiator *negotiator,
+ int seen_ack,
struct strbuf *req_buf,
int *haves_to_send, int *in_vain)
{
}
*in_vain += haves_added;
- if (!haves_added || *in_vain >= MAX_IN_VAIN) {
+ if (!haves_added || (seen_ack && *in_vain >= MAX_IN_VAIN)) {
/* Send Done */
packet_buf_write(req_buf, "done\n");
ret = 1;
}
static int send_fetch_request(struct fetch_negotiator *negotiator, int fd_out,
- const struct fetch_pack_args *args,
+ struct fetch_pack_args *args,
const struct ref *wants, struct oidset *common,
int *haves_to_send, int *in_vain,
- int sideband_all)
+ int sideband_all, int seen_ack)
{
int ret = 0;
+ const char *hash_name;
struct strbuf req_buf = STRBUF_INIT;
if (server_supports_v2("fetch", 1))
packet_buf_write(&req_buf, "command=fetch");
if (server_supports_v2("agent", 0))
packet_buf_write(&req_buf, "agent=%s", git_user_agent_sanitized());
+ if (advertise_sid && server_supports_v2("session-id", 0))
+ packet_buf_write(&req_buf, "session-id=%s", trace2_session_id());
if (args->server_options && args->server_options->nr &&
server_supports_v2("server-option", 1)) {
int i;
args->server_options->items[i].string);
}
+ if (server_feature_v2("object-format", &hash_name)) {
+ int hash_algo = hash_algo_by_name(hash_name);
+ if (hash_algo_by_ptr(the_hash_algo) != hash_algo)
+ die(_("mismatched algorithms: client %s; server %s"),
+ the_hash_algo->name, hash_name);
+ packet_write_fmt(fd_out, "object-format=%s", the_hash_algo->name);
+ } else if (hash_algo_by_ptr(the_hash_algo) != GIT_HASH_SHA1) {
+ die(_("the server does not support algorithm '%s'"),
+ the_hash_algo->name);
+ }
+
packet_buf_delim(&req_buf);
if (args->use_thin_pack)
packet_buf_write(&req_buf, "thin-pack");
/* Add filter */
if (server_supports_feature("fetch", "filter", 0) &&
args->filter_options.choice) {
- struct strbuf expanded_filter_spec = STRBUF_INIT;
+ const char *spec =
+ expand_list_objects_filter_spec(&args->filter_options);
print_verbose(args, _("Server supports filter"));
- expand_list_objects_filter_spec(&args->filter_options,
- &expanded_filter_spec);
- packet_buf_write(&req_buf, "filter %s",
- expanded_filter_spec.buf);
- strbuf_release(&expanded_filter_spec);
+ packet_buf_write(&req_buf, "filter %s", spec);
} else if (args->filter_options.choice) {
warning("filtering not recognized by server, ignoring");
}
- /* add wants */
- add_wants(args->no_dependents, wants, &req_buf);
+ if (server_supports_feature("fetch", "packfile-uris", 0)) {
+ int i;
+ struct strbuf to_send = STRBUF_INIT;
- if (args->no_dependents) {
- packet_buf_write(&req_buf, "done");
- ret = 1;
- } else {
- /* Add all of the common commits we've found in previous rounds */
- add_common(&req_buf, common);
+ for (i = 0; i < uri_protocols.nr; i++) {
+ const char *s = uri_protocols.items[i].string;
- /* Add initial haves */
- ret = add_haves(negotiator, &req_buf, haves_to_send, in_vain);
+ if (!strcmp(s, "https") || !strcmp(s, "http")) {
+ if (to_send.len)
+ strbuf_addch(&to_send, ',');
+ strbuf_addstr(&to_send, s);
+ }
+ }
+ if (to_send.len) {
+ packet_buf_write(&req_buf, "packfile-uris %s",
+ to_send.buf);
+ strbuf_release(&to_send);
+ }
}
+ /* add wants */
+ add_wants(wants, &req_buf);
+
+ /* Add all of the common commits we've found in previous rounds */
+ add_common(&req_buf, common);
+
+ /* Add initial haves */
+ ret = add_haves(negotiator, seen_ack, &req_buf,
+ haves_to_send, in_vain);
+
/* Send request */
packet_buf_flush(&req_buf);
if (write_in_full(fd_out, req_buf.buf, req_buf.len) < 0)
return ret;
}
-static int process_acks(struct fetch_negotiator *negotiator,
- struct packet_reader *reader,
- struct oidset *common)
+enum common_found {
+ /*
+ * No commit was found to be possessed by both the client and the
+ * server, and "ready" was not received.
+ */
+ NO_COMMON_FOUND,
+
+ /*
+ * At least one commit was found to be possessed by both the client and
+ * the server, and "ready" was not received.
+ */
+ COMMON_FOUND,
+
+ /*
+ * "ready" was received, indicating that the server is ready to send
+ * the packfile without any further negotiation.
+ */
+ READY
+};
+
+static enum common_found process_acks(struct fetch_negotiator *negotiator,
+ struct packet_reader *reader,
+ struct oidset *common)
{
/* received */
int received_ready = 0;
if (skip_prefix(reader->line, "ACK ", &arg)) {
struct object_id oid;
+ received_ack = 1;
if (!get_oid_hex(arg, &oid)) {
struct commit *commit;
oidset_insert(common, &oid);
commit = lookup_commit(the_repository, &oid);
- negotiator->ack(negotiator, commit);
+ if (negotiator)
+ negotiator->ack(negotiator, commit);
}
continue;
}
if (!received_ready && reader->status != PACKET_READ_FLUSH)
die(_("expected no other sections to be sent after no 'ready'"));
- /* return 0 if no common, 1 if there are common, or 2 if ready */
- return received_ready ? 2 : (received_ack ? 1 : 0);
+ return received_ready ? READY :
+ (received_ack ? COMMON_FOUND : NO_COMMON_FOUND);
}
static void receive_shallow_info(struct fetch_pack_args *args,
die(_("error processing wanted refs: %d"), reader->status);
}
+static void receive_packfile_uris(struct packet_reader *reader,
+ struct string_list *uris)
+{
+ process_section_header(reader, "packfile-uris", 0);
+ while (packet_reader_read(reader) == PACKET_READ_NORMAL) {
+ if (reader->pktlen < the_hash_algo->hexsz ||
+ reader->line[the_hash_algo->hexsz] != ' ')
+ die("expected '<hash> <uri>', got: %s\n", reader->line);
+
+ string_list_append(uris, reader->line);
+ }
+ if (reader->status != PACKET_READ_DELIM)
+ die("expected DELIM");
+}
+
enum fetch_state {
FETCH_CHECK_LOCAL = 0,
FETCH_SEND_REQUEST,
FETCH_DONE,
};
+static void do_check_stateless_delimiter(const struct fetch_pack_args *args,
+ struct packet_reader *reader)
+{
+ check_stateless_delimiter(args->stateless_rpc, reader,
+ _("git fetch-pack: expected response end packet"));
+}
+
static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
int fd[2],
const struct ref *orig_ref,
struct ref **sought, int nr_sought,
struct oid_array *shallows,
struct shallow_info *si,
- char **pack_lockfile)
+ struct string_list *pack_lockfiles)
{
+ struct repository *r = the_repository;
struct ref *ref = copy_ref_list(orig_ref);
enum fetch_state state = FETCH_CHECK_LOCAL;
struct oidset common = OIDSET_INIT;
struct packet_reader reader;
- int in_vain = 0;
+ int in_vain = 0, negotiation_started = 0;
int haves_to_send = INITIAL_FLUSH;
- struct fetch_negotiator negotiator;
- fetch_negotiator_init(&negotiator, negotiation_algorithm);
+ struct fetch_negotiator negotiator_alloc;
+ struct fetch_negotiator *negotiator;
+ int seen_ack = 0;
+ struct string_list packfile_uris = STRING_LIST_INIT_DUP;
+ int i;
+
+ negotiator = &negotiator_alloc;
+ fetch_negotiator_init(r, negotiator);
+
packet_reader_init(&reader, fd[0], NULL, 0,
PACKET_READ_CHOMP_NEWLINE |
PACKET_READ_DIE_ON_ERR_PACKET);
args->deepen = 1;
/* Filter 'ref' by 'sought' and those that aren't local */
- if (!args->no_dependents) {
- mark_complete_and_common_ref(&negotiator, args, &ref);
- filter_refs(args, &ref, sought, nr_sought);
- if (everything_local(args, &ref))
- state = FETCH_DONE;
- else
- state = FETCH_SEND_REQUEST;
-
- mark_tips(&negotiator, args->negotiation_tips);
- for_each_cached_alternate(&negotiator,
- insert_one_alternate_object);
- } else {
- filter_refs(args, &ref, sought, nr_sought);
+ mark_complete_and_common_ref(negotiator, args, &ref);
+ filter_refs(args, &ref, sought, nr_sought);
+ if (everything_local(args, &ref))
+ state = FETCH_DONE;
+ else
state = FETCH_SEND_REQUEST;
- }
+
+ mark_tips(negotiator, args->negotiation_tips);
+ for_each_cached_alternate(negotiator,
+ insert_one_alternate_object);
break;
case FETCH_SEND_REQUEST:
- if (send_fetch_request(&negotiator, fd[1], args, ref,
+ if (!negotiation_started) {
+ negotiation_started = 1;
+ trace2_region_enter("fetch-pack",
+ "negotiation_v2",
+ the_repository);
+ }
+ if (send_fetch_request(negotiator, fd[1], args, ref,
&common,
&haves_to_send, &in_vain,
- reader.use_sideband))
+ reader.use_sideband,
+ seen_ack))
state = FETCH_GET_PACK;
else
state = FETCH_PROCESS_ACKS;
break;
case FETCH_PROCESS_ACKS:
/* Process ACKs/NAKs */
- switch (process_acks(&negotiator, &reader, &common)) {
- case 2:
+ switch (process_acks(negotiator, &reader, &common)) {
+ case READY:
+ /*
+ * Don't check for response delimiter; get_pack() will
+ * read the rest of this response.
+ */
state = FETCH_GET_PACK;
break;
- case 1:
+ case COMMON_FOUND:
in_vain = 0;
+ seen_ack = 1;
/* fallthrough */
- default:
+ case NO_COMMON_FOUND:
+ do_check_stateless_delimiter(args, &reader);
state = FETCH_SEND_REQUEST;
break;
}
break;
case FETCH_GET_PACK:
+ trace2_region_leave("fetch-pack",
+ "negotiation_v2",
+ the_repository);
/* Check for shallow-info section */
if (process_section_header(&reader, "shallow-info", 1))
receive_shallow_info(args, &reader, shallows, si);
if (process_section_header(&reader, "wanted-refs", 1))
receive_wanted_refs(&reader, sought, nr_sought);
- /* get the pack */
+ /* get the pack(s) */
+ if (process_section_header(&reader, "packfile-uris", 1))
+ receive_packfile_uris(&reader, &packfile_uris);
process_section_header(&reader, "packfile", 0);
- if (get_pack(args, fd, pack_lockfile))
+ if (get_pack(args, fd, pack_lockfiles,
+ !packfile_uris.nr, sought, nr_sought))
die(_("git fetch-pack: fetch failed."));
+ do_check_stateless_delimiter(args, &reader);
state = FETCH_DONE;
break;
}
}
- negotiator.release(&negotiator);
+ for (i = 0; i < packfile_uris.nr; i++) {
+ struct child_process cmd = CHILD_PROCESS_INIT;
+ char packname[GIT_MAX_HEXSZ + 1];
+ const char *uri = packfile_uris.items[i].string +
+ the_hash_algo->hexsz + 1;
+
+ strvec_push(&cmd.args, "http-fetch");
+ strvec_pushf(&cmd.args, "--packfile=%.*s",
+ (int) the_hash_algo->hexsz,
+ packfile_uris.items[i].string);
+ strvec_push(&cmd.args, uri);
+ cmd.git_cmd = 1;
+ cmd.no_stdin = 1;
+ cmd.out = -1;
+ if (start_command(&cmd))
+ die("fetch-pack: unable to spawn http-fetch");
+
+ if (read_in_full(cmd.out, packname, 5) < 0 ||
+ memcmp(packname, "keep\t", 5))
+ die("fetch-pack: expected keep then TAB at start of http-fetch output");
+
+ if (read_in_full(cmd.out, packname,
+ the_hash_algo->hexsz + 1) < 0 ||
+ packname[the_hash_algo->hexsz] != '\n')
+ die("fetch-pack: expected hash then LF at end of http-fetch output");
+
+ packname[the_hash_algo->hexsz] = '\0';
+
+ close(cmd.out);
+
+ if (finish_command(&cmd))
+ die("fetch-pack: unable to finish http-fetch");
+
+ if (memcmp(packfile_uris.items[i].string, packname,
+ the_hash_algo->hexsz))
+ die("fetch-pack: pack downloaded from %s does not match expected hash %.*s",
+ uri, (int) the_hash_algo->hexsz,
+ packfile_uris.items[i].string);
+
+ string_list_append_nodup(pack_lockfiles,
+ xstrfmt("%s/pack/pack-%s.keep",
+ get_object_directory(),
+ packname));
+ }
+ string_list_clear(&packfile_uris, 0);
+
+ if (negotiator)
+ negotiator->release(negotiator);
+
oidset_clear(&common);
return ref;
}
git_config_get_bool("repack.usedeltabaseoffset", &prefer_ofs_delta);
git_config_get_bool("fetch.fsckobjects", &fetch_fsck_objects);
git_config_get_bool("transfer.fsckobjects", &transfer_fsck_objects);
- git_config_get_string("fetch.negotiationalgorithm",
- &negotiation_algorithm);
+ git_config_get_bool("transfer.advertisesid", &advertise_sid);
+ if (!uri_protocols.nr) {
+ char *str;
+
+ if (!git_config_get_string("fetch.uriprotocols", &str) && str) {
+ string_list_split(&uri_protocols, str, ',', -1);
+ free(str);
+ }
+ }
git_config(fetch_pack_config_cb, NULL);
}
if (args->deepen && alternate_shallow_file) {
if (*alternate_shallow_file == '\0') { /* --unshallow */
unlink_or_warn(git_path_shallow(the_repository));
- rollback_lock_file(&shallow_lock);
+ rollback_shallow_file(the_repository, &shallow_lock);
} else
- commit_lock_file(&shallow_lock);
+ commit_shallow_file(the_repository, &shallow_lock);
alternate_shallow_file = NULL;
return;
}
setup_alternate_shallow(&shallow_lock,
&alternate_shallow_file,
&extra);
- commit_lock_file(&shallow_lock);
+ commit_shallow_file(the_repository, &shallow_lock);
alternate_shallow_file = NULL;
}
oid_array_clear(&extra);
setup_alternate_shallow(&shallow_lock,
&alternate_shallow_file,
&extra);
- commit_lock_file(&shallow_lock);
+ commit_shallow_file(the_repository, &shallow_lock);
oid_array_clear(&extra);
oid_array_clear(&ref);
alternate_shallow_file = NULL;
const struct ref *ref,
struct ref **sought, int nr_sought,
struct oid_array *shallow,
- char **pack_lockfile,
+ struct string_list *pack_lockfiles,
enum protocol_version version)
{
struct ref *ref_cpy;
if (nr_sought)
nr_sought = remove_duplicates_in_refs(sought, nr_sought);
- if (args->no_dependents && !args->filter_options.choice) {
- /*
- * The protocol does not support requesting that only the
- * wanted objects be sent, so approximate this by setting a
- * "blob:none" filter if no filter is already set. This works
- * for all object types: note that wanted blobs will still be
- * sent because they are directly specified as a "want".
- *
- * NEEDSWORK: Add an option in the protocol to request that
- * only the wanted objects be sent, and implement it.
- */
- parse_list_objects_filter(&args->filter_options, "blob:none");
- }
-
if (version != protocol_v2 && !ref) {
packet_flush(fd[1]);
die(_("no matching remote head"));
memset(&si, 0, sizeof(si));
ref_cpy = do_fetch_pack_v2(args, fd, ref, sought, nr_sought,
&shallows_scratch, &si,
- pack_lockfile);
+ pack_lockfiles);
} else {
prepare_shallow_info(&si, shallow);
ref_cpy = do_fetch_pack(args, fd, ref, sought, nr_sought,
- &si, pack_lockfile);
+ &si, pack_lockfiles);
}
reprepare_packed_git(the_repository);
error(_("remote did not send all necessary objects"));
free_refs(ref_cpy);
ref_cpy = NULL;
- rollback_lock_file(&shallow_lock);
+ rollback_shallow_file(the_repository, &shallow_lock);
goto cleanup;
}
args->connectivity_checked = 1;
projects / platform / upstream / git.git / blobdiff