#include "cache.h"
+#include "repository.h"
+#include "config.h"
#include "lockfile.h"
#include "refs.h"
#include "pkt-line.h"
#include "commit.h"
#include "tag.h"
-#include "exec_cmd.h"
+#include "exec-cmd.h"
#include "pack.h"
#include "sideband.h"
#include "fetch-pack.h"
#include "version.h"
#include "prio-queue.h"
#include "sha1-array.h"
+#include "oidset.h"
+#include "packfile.h"
+#include "object-store.h"
static int transfer_unpack_limit = -1;
static int fetch_unpack_limit = -1;
static int fetch_fsck_objects = -1;
static int transfer_fsck_objects = -1;
static int agent_supported;
+static int server_supports_filtering;
static struct lock_file shallow_lock;
static const char *alternate_shallow_file;
#define COMMON_REF (1U << 2)
#define SEEN (1U << 3)
#define POPPED (1U << 4)
+#define ALTERNATE (1U << 5)
static int marked;
fputc('\n', stderr);
}
+struct alternate_object_cache {
+ struct object **items;
+ size_t nr, alloc;
+};
+
+static void cache_one_alternate(const char *refname,
+ const struct object_id *oid,
+ void *vcache)
+{
+ struct alternate_object_cache *cache = vcache;
+ struct object *obj = parse_object(oid);
+
+ if (!obj || (obj->flags & ALTERNATE))
+ return;
+
+ obj->flags |= ALTERNATE;
+ ALLOC_GROW(cache->items, cache->nr + 1, cache->alloc);
+ cache->items[cache->nr++] = obj;
+}
+
+static void for_each_cached_alternate(void (*cb)(struct object *))
+{
+ static int initialized;
+ static struct alternate_object_cache cache;
+ size_t i;
+
+ if (!initialized) {
+ for_each_alternate_ref(cache_one_alternate, &cache);
+ initialized = 1;
+ }
+
+ for (i = 0; i < cache.nr; i++)
+ cb(cache.items[i]);
+}
+
static void rev_list_push(struct commit *commit, int mark)
{
if (!(commit->object.flags & mark)) {
}
}
-static int rev_list_insert_ref(const char *refname, const unsigned char *sha1)
+static int rev_list_insert_ref(const char *refname, const struct object_id *oid)
{
- struct object *o = deref_tag(parse_object(sha1), refname, 0);
+ struct object *o = deref_tag(parse_object(oid), refname, 0);
if (o && o->type == OBJ_COMMIT)
rev_list_push((struct commit *)o, SEEN);
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(refname, oid->hash);
+ return rev_list_insert_ref(refname, oid);
}
static int clear_marks(const char *refname, const struct object_id *oid,
int flag, void *cb_data)
{
- struct object *o = deref_tag(parse_object(oid->hash), refname, 0);
+ struct object *o = deref_tag(parse_object(oid), refname, 0);
if (o && o->type == OBJ_COMMIT)
clear_commit_marks((struct commit *)o,
Get the next rev to send, ignoring the common.
*/
-static const unsigned char *get_rev(void)
+static const struct object_id *get_rev(void)
{
struct commit *commit = NULL;
}
}
- return commit->object.oid.hash;
+ return &commit->object.oid;
}
enum ack_type {
}
}
-static enum ack_type get_ack(int fd, unsigned char *result_sha1)
+static enum ack_type get_ack(int fd, struct object_id *result_oid)
{
int len;
char *line = packet_read_line(fd, &len);
const char *arg;
- if (!len)
- die(_("git fetch-pack: expected ACK/NAK, got EOF"));
+ if (!line)
+ die(_("git fetch-pack: expected ACK/NAK, got a flush packet"));
if (!strcmp(line, "NAK"))
return NAK;
if (skip_prefix(line, "ACK ", &arg)) {
- if (!get_sha1_hex(arg, result_sha1)) {
+ if (!get_oid_hex(arg, result_oid)) {
arg += 40;
len -= arg - line;
if (len < 1)
return ACK;
}
}
+ if (skip_prefix(line, "ERR ", &arg))
+ die(_("remote error: %s"), arg);
die(_("git fetch-pack: expected ACK/NAK, got '%s'"), line);
}
write_or_die(fd, buf->buf, buf->len);
}
-static void insert_one_alternate_ref(const struct ref *ref, void *unused)
+static void insert_one_alternate_object(struct object *obj)
{
- rev_list_insert_ref(NULL, ref->old_oid.hash);
+ rev_list_insert_ref(NULL, &obj->oid);
}
#define INITIAL_FLUSH 16
#define PIPESAFE_FLUSH 32
#define LARGE_FLUSH 16384
-static int next_flush(struct fetch_pack_args *args, int count)
+static int next_flush(int stateless_rpc, int count)
{
- if (args->stateless_rpc) {
+ if (stateless_rpc) {
if (count < LARGE_FLUSH)
count <<= 1;
else
}
static int find_common(struct fetch_pack_args *args,
- int fd[2], unsigned char *result_sha1,
+ int fd[2], struct object_id *result_oid,
struct ref *refs)
{
int fetching;
int count = 0, flushes = 0, flush_at = INITIAL_FLUSH, retval;
- const unsigned char *sha1;
+ const struct object_id *oid;
unsigned in_vain = 0;
int got_continue = 0;
int got_ready = 0;
marked = 1;
for_each_ref(rev_list_insert_ref_oid, NULL);
- for_each_alternate_ref(insert_one_alternate_ref, NULL);
+ for_each_cached_alternate(insert_one_alternate_object);
fetching = 0;
for ( ; refs ; refs = refs->next) {
- unsigned char *remote = refs->old_oid.hash;
+ struct object_id *remote = &refs->old_oid;
const char *remote_hex;
struct object *o;
* interested in the case we *know* the object is
* reachable and we have already scanned it.
*/
- if (((o = lookup_object(remote)) != NULL) &&
+ if (((o = lookup_object(remote->hash)) != NULL) &&
(o->flags & COMPLETE)) {
continue;
}
- remote_hex = sha1_to_hex(remote);
+ remote_hex = oid_to_hex(remote);
if (!fetching) {
struct strbuf c = STRBUF_INIT;
if (multi_ack == 2) strbuf_addstr(&c, " multi_ack_detailed");
if (deepen_not_ok) strbuf_addstr(&c, " deepen-not");
if (agent_supported) strbuf_addf(&c, " agent=%s",
git_user_agent_sanitized());
+ if (args->filter_options.choice)
+ strbuf_addstr(&c, " filter");
packet_buf_write(&req_buf, "want %s%s\n", remote_hex, c.buf);
strbuf_release(&c);
} else
return 1;
}
- if (is_repository_shallow())
+ if (is_repository_shallow(the_repository))
write_shallow_commits(&req_buf, 1, NULL);
if (args->depth > 0)
packet_buf_write(&req_buf, "deepen %d", args->depth);
if (args->deepen_since) {
- unsigned long max_age = approxidate(args->deepen_since);
- packet_buf_write(&req_buf, "deepen-since %lu", max_age);
+ timestamp_t max_age = approxidate(args->deepen_since);
+ packet_buf_write(&req_buf, "deepen-since %"PRItime, max_age);
}
if (args->deepen_not) {
int i;
packet_buf_write(&req_buf, "deepen-not %s", s->string);
}
}
+ if (server_supports_filtering && args->filter_options.choice)
+ packet_buf_write(&req_buf, "filter %s",
+ args->filter_options.filter_spec);
packet_buf_flush(&req_buf);
state_len = req_buf.len;
if (args->deepen) {
char *line;
const char *arg;
- unsigned char sha1[20];
+ struct object_id oid;
send_request(args, fd[1], &req_buf);
while ((line = packet_read_line(fd[0], NULL))) {
if (skip_prefix(line, "shallow ", &arg)) {
- if (get_sha1_hex(arg, sha1))
+ if (get_oid_hex(arg, &oid))
die(_("invalid shallow line: %s"), line);
- register_shallow(sha1);
+ register_shallow(the_repository, &oid);
continue;
}
if (skip_prefix(line, "unshallow ", &arg)) {
- if (get_sha1_hex(arg, sha1))
+ if (get_oid_hex(arg, &oid))
die(_("invalid unshallow line: %s"), line);
- if (!lookup_object(sha1))
+ if (!lookup_object(oid.hash))
die(_("object not found: %s"), line);
/* make sure that it is parsed as shallow */
- if (!parse_object(sha1))
+ if (!parse_object(&oid))
die(_("error in object: %s"), line);
- if (unregister_shallow(sha1))
+ if (unregister_shallow(&oid))
die(_("no shallow found: %s"), line);
continue;
}
flushes = 0;
retval = -1;
- while ((sha1 = get_rev())) {
- packet_buf_write(&req_buf, "have %s\n", sha1_to_hex(sha1));
- print_verbose(args, "have %s", sha1_to_hex(sha1));
+ if (args->no_dependents)
+ goto done;
+ while ((oid = get_rev())) {
+ packet_buf_write(&req_buf, "have %s\n", oid_to_hex(oid));
+ print_verbose(args, "have %s", oid_to_hex(oid));
in_vain++;
if (flush_at <= ++count) {
int ack;
send_request(args, fd[1], &req_buf);
strbuf_setlen(&req_buf, state_len);
flushes++;
- flush_at = next_flush(args, count);
+ flush_at = next_flush(args->stateless_rpc, count);
/*
* We keep one window "ahead" of the other side, and
consume_shallow_list(args, fd[0]);
do {
- ack = get_ack(fd[0], result_sha1);
+ ack = get_ack(fd[0], result_oid);
if (ack)
print_verbose(args, _("got %s %d %s"), "ack",
- ack, sha1_to_hex(result_sha1));
+ ack, oid_to_hex(result_oid));
switch (ack) {
case ACK:
flushes = 0;
case ACK_ready:
case ACK_continue: {
struct commit *commit =
- lookup_commit(result_sha1);
+ lookup_commit(result_oid);
if (!commit)
- die(_("invalid commit %s"), sha1_to_hex(result_sha1));
+ die(_("invalid commit %s"), oid_to_hex(result_oid));
if (args->stateless_rpc
&& ack == ACK_common
&& !(commit->object.flags & COMMON)) {
* on the next RPC request so the peer knows
* it is in common with us.
*/
- const char *hex = sha1_to_hex(result_sha1);
+ const char *hex = oid_to_hex(result_oid);
packet_buf_write(&req_buf, "have %s\n", hex);
state_len = req_buf.len;
/*
if (!got_ready || !no_done)
consume_shallow_list(args, fd[0]);
while (flushes || multi_ack) {
- int ack = get_ack(fd[0], result_sha1);
+ int ack = get_ack(fd[0], result_oid);
if (ack) {
print_verbose(args, _("got %s (%d) %s"), "ack",
- ack, sha1_to_hex(result_sha1));
+ ack, oid_to_hex(result_oid));
if (ack == ACK)
return 0;
multi_ack = 1;
static struct commit_list *complete;
-static int mark_complete(const unsigned char *sha1)
+static int mark_complete(const struct object_id *oid)
{
- struct object *o = parse_object(sha1);
+ struct object *o = parse_object(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(t->tagged->oid.hash);
+ o = parse_object(&t->tagged->oid);
}
if (o && o->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *)o;
static int mark_complete_oid(const char *refname, const struct object_id *oid,
int flag, void *cb_data)
{
- return mark_complete(oid->hash);
+ return mark_complete(oid);
}
static void mark_recent_complete_commits(struct fetch_pack_args *args,
- unsigned long cutoff)
+ timestamp_t cutoff)
{
while (complete && cutoff <= complete->item->date) {
print_verbose(args, _("Marking %s as complete"),
}
}
+static void add_refs_to_oidset(struct oidset *oids, struct ref *refs)
+{
+ for (; refs; refs = refs->next)
+ oidset_insert(oids, &refs->old_oid);
+}
+
+static int tip_oids_contain(struct oidset *tip_oids,
+ struct ref *unmatched, struct ref *newlist,
+ const struct object_id *id)
+{
+ /*
+ * Note that this only looks at the ref lists the first time it's
+ * called. This works out in filter_refs() because even though it may
+ * add to "newlist" between calls, the additions will always be for
+ * oids that are already in the set.
+ */
+ if (!tip_oids->map.map.tablesize) {
+ add_refs_to_oidset(tip_oids, unmatched);
+ add_refs_to_oidset(tip_oids, newlist);
+ }
+ return oidset_contains(tip_oids, id);
+}
+
static void filter_refs(struct fetch_pack_args *args,
struct ref **refs,
struct ref **sought, int nr_sought)
{
struct ref *newlist = NULL;
struct ref **newtail = &newlist;
+ struct ref *unmatched = NULL;
struct ref *ref, *next;
+ struct oidset tip_oids = OIDSET_INIT;
int i;
i = 0;
break; /* definitely do not have it */
else if (cmp == 0) {
keep = 1; /* definitely have it */
- sought[i]->matched = 1;
+ sought[i]->match_status = REF_MATCHED;
}
i++;
}
ref->next = NULL;
newtail = &ref->next;
} else {
- free(ref);
+ ref->next = unmatched;
+ unmatched = ref;
}
}
/* Append unmatched requests to the list */
- if ((allow_unadvertised_object_request &
- (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1))) {
- for (i = 0; i < nr_sought; i++) {
- unsigned char sha1[20];
+ for (i = 0; i < nr_sought; i++) {
+ struct object_id oid;
+ const char *p;
- ref = sought[i];
- if (ref->matched)
- continue;
- if (get_sha1_hex(ref->name, sha1) ||
- ref->name[40] != '\0' ||
- hashcmp(sha1, ref->old_oid.hash))
- continue;
+ ref = sought[i];
+ if (ref->match_status != REF_NOT_MATCHED)
+ continue;
+ if (parse_oid_hex(ref->name, &oid, &p) ||
+ *p != '\0' ||
+ oidcmp(&oid, &ref->old_oid))
+ continue;
- ref->matched = 1;
+ if ((allow_unadvertised_object_request &
+ (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1)) ||
+ tip_oids_contain(&tip_oids, unmatched, newlist,
+ &ref->old_oid)) {
+ ref->match_status = REF_MATCHED;
*newtail = copy_ref(ref);
newtail = &(*newtail)->next;
+ } else {
+ ref->match_status = REF_UNADVERTISED_NOT_ALLOWED;
}
}
+
+ oidset_clear(&tip_oids);
+ for (ref = unmatched; ref; ref = next) {
+ next = ref->next;
+ free(ref);
+ }
+
*refs = newlist;
}
-static void mark_alternate_complete(const struct ref *ref, void *unused)
+static void mark_alternate_complete(struct object *obj)
{
- mark_complete(ref->old_oid.hash);
+ mark_complete(&obj->oid);
+}
+
+struct loose_object_iter {
+ struct oidset *loose_object_set;
+ struct ref *refs;
+};
+
+/*
+ * If the number of refs is not larger than the number of loose objects,
+ * this function stops inserting.
+ */
+static int add_loose_objects_to_set(const struct object_id *oid,
+ const char *path,
+ void *data)
+{
+ struct loose_object_iter *iter = data;
+ oidset_insert(iter->loose_object_set, oid);
+ if (iter->refs == NULL)
+ return 1;
+
+ iter->refs = iter->refs->next;
+ return 0;
}
static int everything_local(struct fetch_pack_args *args,
{
struct ref *ref;
int retval;
- unsigned long cutoff = 0;
+ int old_save_commit_buffer = save_commit_buffer;
+ timestamp_t cutoff = 0;
+ struct oidset loose_oid_set = OIDSET_INIT;
+ int use_oidset = 0;
+ struct loose_object_iter iter = {&loose_oid_set, *refs};
+
+ /* Enumerate all loose objects or know refs are not so many. */
+ use_oidset = !for_each_loose_object(add_loose_objects_to_set,
+ &iter, 0);
save_commit_buffer = 0;
for (ref = *refs; ref; ref = ref->next) {
struct object *o;
+ unsigned int flags = OBJECT_INFO_QUICK;
- if (!has_object_file(&ref->old_oid))
- continue;
+ if (use_oidset &&
+ !oidset_contains(&loose_oid_set, &ref->old_oid)) {
+ /*
+ * I know this does not exist in the loose form,
+ * so check if it exists in a non-loose form.
+ */
+ flags |= OBJECT_INFO_IGNORE_LOOSE;
+ }
- o = parse_object(ref->old_oid.hash);
+ if (!has_object_file_with_flags(&ref->old_oid, flags))
+ continue;
+ o = parse_object(&ref->old_oid);
if (!o)
continue;
}
}
- if (!args->deepen) {
- for_each_ref(mark_complete_oid, NULL);
- for_each_alternate_ref(mark_alternate_complete, NULL);
- commit_list_sort_by_date(&complete);
- if (cutoff)
- mark_recent_complete_commits(args, cutoff);
- }
+ oidset_clear(&loose_oid_set);
- /*
- * Mark all complete remote refs as common refs.
- * Don't mark them common yet; the server has to be told so first.
- */
- for (ref = *refs; ref; ref = ref->next) {
- struct object *o = deref_tag(lookup_object(ref->old_oid.hash),
- NULL, 0);
+ if (!args->no_dependents) {
+ if (!args->deepen) {
+ for_each_ref(mark_complete_oid, NULL);
+ for_each_cached_alternate(mark_alternate_complete);
+ commit_list_sort_by_date(&complete);
+ if (cutoff)
+ mark_recent_complete_commits(args, cutoff);
+ }
- if (!o || o->type != OBJ_COMMIT || !(o->flags & COMPLETE))
- continue;
+ /*
+ * Mark all complete remote refs as common refs.
+ * Don't mark them common yet; the server has to be told so first.
+ */
+ for (ref = *refs; ref; ref = ref->next) {
+ struct object *o = deref_tag(lookup_object(ref->old_oid.hash),
+ NULL, 0);
- if (!(o->flags & SEEN)) {
- rev_list_push((struct commit *)o, COMMON_REF | SEEN);
+ if (!o || o->type != OBJ_COMMIT || !(o->flags & COMPLETE))
+ continue;
+
+ if (!(o->flags & SEEN)) {
+ rev_list_push((struct commit *)o, COMMON_REF | SEEN);
- mark_common((struct commit *)o, 1, 1);
+ mark_common((struct commit *)o, 1, 1);
+ }
}
}
filter_refs(args, refs, sought, nr_sought);
for (retval = 1, ref = *refs; ref ; ref = ref->next) {
- const unsigned char *remote = ref->old_oid.hash;
+ const struct object_id *remote = &ref->old_oid;
struct object *o;
- o = lookup_object(remote);
+ o = lookup_object(remote->hash);
if (!o || !(o->flags & COMPLETE)) {
retval = 0;
- print_verbose(args, "want %s (%s)", sha1_to_hex(remote),
+ print_verbose(args, "want %s (%s)", oid_to_hex(remote),
ref->name);
continue;
}
- print_verbose(args, _("already have %s (%s)"), sha1_to_hex(remote),
+ print_verbose(args, _("already have %s (%s)"), oid_to_hex(remote),
ref->name);
}
+
+ save_commit_buffer = old_save_commit_buffer;
+
return retval;
}
argv_array_push(&cmd.args, alternate_shallow_file);
}
- if (do_keep) {
+ if (do_keep || args->from_promisor) {
if (pack_lockfile)
cmd.out = -1;
cmd_name = "index-pack";
argv_array_push(&cmd.args, "-v");
if (args->use_thin_pack)
argv_array_push(&cmd.args, "--fix-thin");
- if (args->lock_pack || unpack_limit) {
- char hostname[256];
- if (gethostname(hostname, sizeof(hostname)))
+ 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",
}
if (args->check_self_contained_and_connected)
argv_array_push(&cmd.args, "--check-self-contained-and-connected");
+ if (args->from_promisor)
+ argv_array_push(&cmd.args, "--promisor");
}
else {
cmd_name = "unpack-objects";
? fetch_fsck_objects
: transfer_fsck_objects >= 0
? transfer_fsck_objects
- : 0)
- argv_array_push(&cmd.args, "--strict");
+ : 0) {
+ if (args->from_promisor)
+ /*
+ * 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");
+ else
+ argv_array_push(&cmd.args, "--strict");
+ }
cmd.in = demux.out;
cmd.git_cmd = 1;
char **pack_lockfile)
{
struct ref *ref = copy_ref_list(orig_ref);
- unsigned char sha1[20];
+ struct object_id oid;
const char *agent_feature;
int agent_len;
sort_ref_list(&ref, ref_compare_name);
QSORT(sought, nr_sought, cmp_ref_by_name);
- if ((args->depth > 0 || is_repository_shallow()) && !server_supports("shallow"))
+ if ((args->depth > 0 || is_repository_shallow(the_repository)) && !server_supports("shallow"))
die(_("Server does not support shallow clients"));
if (args->depth > 0 || args->deepen_since || args->deepen_not)
args->deepen = 1;
else
prefer_ofs_delta = 0;
+ if (server_supports("filter")) {
+ server_supports_filtering = 1;
+ print_verbose(args, _("Server supports filter"));
+ } else if (args->filter_options.choice) {
+ warning("filtering not recognized by server, ignoring");
+ }
+
if ((agent_feature = server_feature_value("agent", &agent_len))) {
agent_supported = 1;
if (agent_len)
packet_flush(fd[1]);
goto all_done;
}
- if (find_common(args, fd, sha1, ref) < 0)
+ if (find_common(args, fd, &oid, ref) < 0)
if (!args->keep_pack)
/* When cloning, it is not unusual to have
* no common commit.
return ref;
}
+static void add_shallow_requests(struct strbuf *req_buf,
+ const struct fetch_pack_args *args)
+{
+ if (is_repository_shallow(the_repository))
+ write_shallow_commits(req_buf, 1, NULL);
+ if (args->depth > 0)
+ packet_buf_write(req_buf, "deepen %d", args->depth);
+ if (args->deepen_since) {
+ timestamp_t max_age = approxidate(args->deepen_since);
+ packet_buf_write(req_buf, "deepen-since %"PRItime, max_age);
+ }
+ if (args->deepen_not) {
+ int i;
+ for (i = 0; i < args->deepen_not->nr; i++) {
+ struct string_list_item *s = args->deepen_not->items + i;
+ packet_buf_write(req_buf, "deepen-not %s", s->string);
+ }
+ }
+}
+
+static void add_wants(const struct ref *wants, struct strbuf *req_buf)
+{
+ for ( ; wants ; wants = wants->next) {
+ const struct object_id *remote = &wants->old_oid;
+ const char *remote_hex;
+ struct object *o;
+
+ /*
+ * If that object is complete (i.e. it is an ancestor of a
+ * local ref), we tell them we have it but do not have to
+ * tell them about its ancestors, which they already know
+ * about.
+ *
+ * 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.
+ */
+ if (((o = lookup_object(remote->hash)) != NULL) &&
+ (o->flags & COMPLETE)) {
+ continue;
+ }
+
+ remote_hex = oid_to_hex(remote);
+ packet_buf_write(req_buf, "want %s\n", remote_hex);
+ }
+}
+
+static void add_common(struct strbuf *req_buf, struct oidset *common)
+{
+ struct oidset_iter iter;
+ const struct object_id *oid;
+ oidset_iter_init(common, &iter);
+
+ while ((oid = oidset_iter_next(&iter))) {
+ packet_buf_write(req_buf, "have %s\n", oid_to_hex(oid));
+ }
+}
+
+static int add_haves(struct strbuf *req_buf, int *haves_to_send, int *in_vain)
+{
+ int ret = 0;
+ int haves_added = 0;
+ const struct object_id *oid;
+
+ while ((oid = get_rev())) {
+ packet_buf_write(req_buf, "have %s\n", oid_to_hex(oid));
+ if (++haves_added >= *haves_to_send)
+ break;
+ }
+
+ *in_vain += haves_added;
+ if (!haves_added || *in_vain >= MAX_IN_VAIN) {
+ /* Send Done */
+ packet_buf_write(req_buf, "done\n");
+ ret = 1;
+ }
+
+ /* Increase haves to send on next round */
+ *haves_to_send = next_flush(1, *haves_to_send);
+
+ return ret;
+}
+
+static int send_fetch_request(int fd_out, const struct fetch_pack_args *args,
+ const struct ref *wants, struct oidset *common,
+ int *haves_to_send, int *in_vain)
+{
+ int ret = 0;
+ 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 (args->server_options && args->server_options->nr &&
+ server_supports_v2("server-option", 1)) {
+ int i;
+ for (i = 0; i < args->server_options->nr; i++)
+ packet_write_fmt(fd_out, "server-option=%s",
+ args->server_options->items[i].string);
+ }
+
+ packet_buf_delim(&req_buf);
+ if (args->use_thin_pack)
+ packet_buf_write(&req_buf, "thin-pack");
+ if (args->no_progress)
+ packet_buf_write(&req_buf, "no-progress");
+ if (args->include_tag)
+ packet_buf_write(&req_buf, "include-tag");
+ if (prefer_ofs_delta)
+ packet_buf_write(&req_buf, "ofs-delta");
+
+ /* Add shallow-info and deepen request */
+ if (server_supports_feature("fetch", "shallow", 0))
+ add_shallow_requests(&req_buf, args);
+ else if (is_repository_shallow(the_repository) || args->deepen)
+ die(_("Server does not support shallow requests"));
+
+ /* Add filter */
+ if (server_supports_feature("fetch", "filter", 0) &&
+ args->filter_options.choice) {
+ print_verbose(args, _("Server supports filter"));
+ packet_buf_write(&req_buf, "filter %s",
+ args->filter_options.filter_spec);
+ } else if (args->filter_options.choice) {
+ warning("filtering not recognized by server, ignoring");
+ }
+
+ /* add wants */
+ add_wants(wants, &req_buf);
+
+ 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);
+
+ /* Add initial haves */
+ ret = add_haves(&req_buf, haves_to_send, in_vain);
+ }
+
+ /* Send request */
+ packet_buf_flush(&req_buf);
+ write_or_die(fd_out, req_buf.buf, req_buf.len);
+
+ strbuf_release(&req_buf);
+ return ret;
+}
+
+/*
+ * Processes a section header in a server's response and checks if it matches
+ * `section`. If the value of `peek` is 1, the header line will be peeked (and
+ * not consumed); if 0, the line will be consumed and the function will die if
+ * the section header doesn't match what was expected.
+ */
+static int process_section_header(struct packet_reader *reader,
+ const char *section, int peek)
+{
+ int ret;
+
+ if (packet_reader_peek(reader) != PACKET_READ_NORMAL)
+ die("error reading section header '%s'", section);
+
+ ret = !strcmp(reader->line, section);
+
+ if (!peek) {
+ if (!ret)
+ die("expected '%s', received '%s'",
+ section, reader->line);
+ packet_reader_read(reader);
+ }
+
+ return ret;
+}
+
+static int process_acks(struct packet_reader *reader, struct oidset *common)
+{
+ /* received */
+ int received_ready = 0;
+ int received_ack = 0;
+
+ process_section_header(reader, "acknowledgments", 0);
+ while (packet_reader_read(reader) == PACKET_READ_NORMAL) {
+ const char *arg;
+
+ if (!strcmp(reader->line, "NAK"))
+ continue;
+
+ if (skip_prefix(reader->line, "ACK ", &arg)) {
+ struct object_id oid;
+ if (!get_oid_hex(arg, &oid)) {
+ struct commit *commit;
+ oidset_insert(common, &oid);
+ commit = lookup_commit(&oid);
+ mark_common(commit, 0, 1);
+ }
+ continue;
+ }
+
+ if (!strcmp(reader->line, "ready")) {
+ clear_prio_queue(&rev_list);
+ received_ready = 1;
+ continue;
+ }
+
+ die("unexpected acknowledgment line: '%s'", reader->line);
+ }
+
+ if (reader->status != PACKET_READ_FLUSH &&
+ reader->status != PACKET_READ_DELIM)
+ die("error processing acks: %d", reader->status);
+
+ /* return 0 if no common, 1 if there are common, or 2 if ready */
+ return received_ready ? 2 : (received_ack ? 1 : 0);
+}
+
+static void receive_shallow_info(struct fetch_pack_args *args,
+ struct packet_reader *reader)
+{
+ process_section_header(reader, "shallow-info", 0);
+ while (packet_reader_read(reader) == PACKET_READ_NORMAL) {
+ const char *arg;
+ struct object_id oid;
+
+ if (skip_prefix(reader->line, "shallow ", &arg)) {
+ if (get_oid_hex(arg, &oid))
+ die(_("invalid shallow line: %s"), reader->line);
+ register_shallow(the_repository, &oid);
+ continue;
+ }
+ if (skip_prefix(reader->line, "unshallow ", &arg)) {
+ if (get_oid_hex(arg, &oid))
+ die(_("invalid unshallow line: %s"), reader->line);
+ if (!lookup_object(oid.hash))
+ die(_("object not found: %s"), reader->line);
+ /* make sure that it is parsed as shallow */
+ if (!parse_object(&oid))
+ die(_("error in object: %s"), reader->line);
+ if (unregister_shallow(&oid))
+ die(_("no shallow found: %s"), reader->line);
+ continue;
+ }
+ die(_("expected shallow/unshallow, got %s"), reader->line);
+ }
+
+ if (reader->status != PACKET_READ_FLUSH &&
+ reader->status != PACKET_READ_DELIM)
+ die("error processing shallow info: %d", reader->status);
+
+ setup_alternate_shallow(&shallow_lock, &alternate_shallow_file, NULL);
+ args->deepen = 1;
+}
+
+enum fetch_state {
+ FETCH_CHECK_LOCAL = 0,
+ FETCH_SEND_REQUEST,
+ FETCH_PROCESS_ACKS,
+ FETCH_GET_PACK,
+ FETCH_DONE,
+};
+
+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,
+ char **pack_lockfile)
+{
+ 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 haves_to_send = INITIAL_FLUSH;
+ packet_reader_init(&reader, fd[0], NULL, 0,
+ PACKET_READ_CHOMP_NEWLINE);
+
+ while (state != FETCH_DONE) {
+ switch (state) {
+ case FETCH_CHECK_LOCAL:
+ sort_ref_list(&ref, ref_compare_name);
+ QSORT(sought, nr_sought, cmp_ref_by_name);
+
+ /* v2 supports these by default */
+ allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1;
+ use_sideband = 2;
+ if (args->depth > 0 || args->deepen_since || args->deepen_not)
+ args->deepen = 1;
+
+ if (marked)
+ for_each_ref(clear_marks, NULL);
+ marked = 1;
+
+ for_each_ref(rev_list_insert_ref_oid, NULL);
+ for_each_cached_alternate(insert_one_alternate_object);
+
+ /* Filter 'ref' by 'sought' and those that aren't local */
+ if (everything_local(args, &ref, sought, nr_sought))
+ state = FETCH_DONE;
+ else
+ state = FETCH_SEND_REQUEST;
+ break;
+ case FETCH_SEND_REQUEST:
+ if (send_fetch_request(fd[1], args, ref, &common,
+ &haves_to_send, &in_vain))
+ state = FETCH_GET_PACK;
+ else
+ state = FETCH_PROCESS_ACKS;
+ break;
+ case FETCH_PROCESS_ACKS:
+ /* Process ACKs/NAKs */
+ switch (process_acks(&reader, &common)) {
+ case 2:
+ state = FETCH_GET_PACK;
+ break;
+ case 1:
+ in_vain = 0;
+ /* fallthrough */
+ default:
+ state = FETCH_SEND_REQUEST;
+ break;
+ }
+ break;
+ case FETCH_GET_PACK:
+ /* Check for shallow-info section */
+ if (process_section_header(&reader, "shallow-info", 1))
+ receive_shallow_info(args, &reader);
+
+ /* get the pack */
+ process_section_header(&reader, "packfile", 0);
+ if (get_pack(args, fd, pack_lockfile))
+ die(_("git fetch-pack: fetch failed."));
+
+ state = FETCH_DONE;
+ break;
+ case FETCH_DONE:
+ continue;
+ }
+ }
+
+ oidset_clear(&common);
+ return ref;
+}
+
static void fetch_pack_config(void)
{
git_config_get_int("fetch.unpacklimit", &fetch_unpack_limit);
struct ref **sought, int nr_sought,
struct shallow_info *si)
{
- struct sha1_array ref = SHA1_ARRAY_INIT;
+ struct oid_array ref = OID_ARRAY_INIT;
int *status;
int i;
if (args->deepen && alternate_shallow_file) {
if (*alternate_shallow_file == '\0') { /* --unshallow */
- unlink_or_warn(git_path_shallow());
+ unlink_or_warn(git_path_shallow(the_repository));
rollback_lock_file(&shallow_lock);
} else
commit_lock_file(&shallow_lock);
* shallow points that exist in the pack (iow in repo
* after get_pack() and reprepare_packed_git())
*/
- struct sha1_array extra = SHA1_ARRAY_INIT;
- unsigned char (*sha1)[20] = si->shallow->sha1;
+ struct oid_array extra = OID_ARRAY_INIT;
+ struct object_id *oid = si->shallow->oid;
for (i = 0; i < si->shallow->nr; i++)
- if (has_sha1_file(sha1[i]))
- sha1_array_append(&extra, sha1[i]);
+ if (has_object_file(&oid[i]))
+ oid_array_append(&extra, &oid[i]);
if (extra.nr) {
setup_alternate_shallow(&shallow_lock,
&alternate_shallow_file,
&extra);
commit_lock_file(&shallow_lock);
}
- sha1_array_clear(&extra);
+ oid_array_clear(&extra);
return;
}
if (!si->nr_ours && !si->nr_theirs)
return;
for (i = 0; i < nr_sought; i++)
- sha1_array_append(&ref, sought[i]->old_oid.hash);
+ oid_array_append(&ref, &sought[i]->old_oid);
si->ref = &ref;
if (args->update_shallow) {
* shallow roots that are actually reachable from new
* refs.
*/
- struct sha1_array extra = SHA1_ARRAY_INIT;
- unsigned char (*sha1)[20] = si->shallow->sha1;
+ struct oid_array extra = OID_ARRAY_INIT;
+ struct object_id *oid = si->shallow->oid;
assign_shallow_commits_to_refs(si, NULL, NULL);
if (!si->nr_ours && !si->nr_theirs) {
- sha1_array_clear(&ref);
+ oid_array_clear(&ref);
return;
}
for (i = 0; i < si->nr_ours; i++)
- sha1_array_append(&extra, sha1[si->ours[i]]);
+ oid_array_append(&extra, &oid[si->ours[i]]);
for (i = 0; i < si->nr_theirs; i++)
- sha1_array_append(&extra, sha1[si->theirs[i]]);
+ oid_array_append(&extra, &oid[si->theirs[i]]);
setup_alternate_shallow(&shallow_lock,
&alternate_shallow_file,
&extra);
commit_lock_file(&shallow_lock);
- sha1_array_clear(&extra);
- sha1_array_clear(&ref);
+ oid_array_clear(&extra);
+ oid_array_clear(&ref);
return;
}
sought[i]->status = REF_STATUS_REJECT_SHALLOW;
}
free(status);
- sha1_array_clear(&ref);
+ oid_array_clear(&ref);
}
struct ref *fetch_pack(struct fetch_pack_args *args,
const struct ref *ref,
const char *dest,
struct ref **sought, int nr_sought,
- struct sha1_array *shallow,
- char **pack_lockfile)
+ struct oid_array *shallow,
+ char **pack_lockfile,
+ enum protocol_version version)
{
struct ref *ref_cpy;
struct shallow_info si;
die(_("no matching remote head"));
}
prepare_shallow_info(&si, shallow);
- ref_cpy = do_fetch_pack(args, fd, ref, sought, nr_sought,
- &si, pack_lockfile);
- reprepare_packed_git();
+ if (version == protocol_v2)
+ ref_cpy = do_fetch_pack_v2(args, fd, ref, sought, nr_sought,
+ pack_lockfile);
+ else
+ ref_cpy = do_fetch_pack(args, fd, ref, sought, nr_sought,
+ &si, pack_lockfile);
+ reprepare_packed_git(the_repository);
update_shallow(args, sought, nr_sought, &si);
clear_shallow_info(&si);
return ref_cpy;
}
+
+int report_unmatched_refs(struct ref **sought, int nr_sought)
+{
+ int i, ret = 0;
+
+ for (i = 0; i < nr_sought; i++) {
+ if (!sought[i])
+ continue;
+ switch (sought[i]->match_status) {
+ case REF_MATCHED:
+ continue;
+ case REF_NOT_MATCHED:
+ error(_("no such remote ref %s"), sought[i]->name);
+ break;
+ case REF_UNADVERTISED_NOT_ALLOWED:
+ error(_("Server does not allow request for unadvertised object %s"),
+ sought[i]->name);
+ break;
+ }
+ ret = 1;
+ }
+ return ret;
+}