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-rw-r--r--upload-pack.c1121
1 files changed, 863 insertions, 258 deletions
diff --git a/upload-pack.c b/upload-pack.c
index d4cc414bc2..540778d1dd 100644
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -1,40 +1,46 @@
#include "cache.h"
+#include "config.h"
#include "refs.h"
#include "pkt-line.h"
#include "sideband.h"
+#include "repository.h"
+#include "object-store.h"
#include "tag.h"
#include "object.h"
#include "commit.h"
-#include "exec_cmd.h"
#include "diff.h"
#include "revision.h"
#include "list-objects.h"
+#include "list-objects-filter.h"
+#include "list-objects-filter-options.h"
#include "run-command.h"
#include "connect.h"
#include "sigchain.h"
#include "version.h"
#include "string-list.h"
-#include "parse-options.h"
-
-static const char * const upload_pack_usage[] = {
- N_("git upload-pack [<options>] <dir>"),
- NULL
-};
+#include "argv-array.h"
+#include "prio-queue.h"
+#include "protocol.h"
+#include "quote.h"
+#include "upload-pack.h"
+#include "serve.h"
+#include "commit-graph.h"
+#include "commit-reach.h"
/* Remember to update object flag allocation in object.h */
#define THEY_HAVE (1u << 11)
#define OUR_REF (1u << 12)
#define WANTED (1u << 13)
#define COMMON_KNOWN (1u << 14)
-#define REACHABLE (1u << 15)
#define SHALLOW (1u << 16)
#define NOT_SHALLOW (1u << 17)
#define CLIENT_SHALLOW (1u << 18)
#define HIDDEN_REF (1u << 19)
-static unsigned long oldest_have;
+static timestamp_t oldest_have;
+static int deepen_relative;
static int multi_ack;
static int no_done;
static int use_thin_pack, use_ofs_delta, use_include_tag;
@@ -43,6 +49,8 @@ static int no_progress, daemon_mode;
#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
+/* Allow request of any sha1. Implies ALLOW_TIP_SHA1 and ALLOW_REACHABLE_SHA1. */
+#define ALLOW_ANY_SHA1 07
static unsigned int allow_unadvertised_object_request;
static int shallow_nr;
static struct object_array have_obj;
@@ -54,10 +62,14 @@ static int keepalive = 5;
* otherwise maximum packet size (up to 65520 bytes).
*/
static int use_sideband;
-static int advertise_refs;
static int stateless_rpc;
static const char *pack_objects_hook;
+static int filter_capability_requested;
+static int allow_filter;
+static int allow_ref_in_want;
+static struct list_objects_filter_options filter_options;
+
static void reset_timeout(void)
{
alarm(timeout);
@@ -125,6 +137,17 @@ static void create_pack_file(void)
argv_array_push(&pack_objects.args, "--delta-base-offset");
if (use_include_tag)
argv_array_push(&pack_objects.args, "--include-tag");
+ if (filter_options.filter_spec) {
+ if (pack_objects.use_shell) {
+ struct strbuf buf = STRBUF_INIT;
+ sq_quote_buf(&buf, filter_options.filter_spec);
+ argv_array_pushf(&pack_objects.args, "--filter=%s", buf.buf);
+ strbuf_release(&buf);
+ } else {
+ argv_array_pushf(&pack_objects.args, "--filter=%s",
+ filter_options.filter_spec);
+ }
+ }
pack_objects.in = -1;
pack_objects.out = -1;
@@ -281,19 +304,19 @@ static void create_pack_file(void)
die("git upload-pack: %s", abort_msg);
}
-static int got_sha1(char *hex, unsigned char *sha1)
+static int got_oid(const char *hex, struct object_id *oid)
{
struct object *o;
int we_knew_they_have = 0;
- if (get_sha1_hex(hex, sha1))
+ if (get_oid_hex(hex, oid))
die("git upload-pack: expected SHA1 object, got '%s'", hex);
- if (!has_sha1_file(sha1))
+ if (!has_object_file(oid))
return -1;
- o = parse_object(sha1);
+ o = parse_object(the_repository, oid);
if (!o)
- die("oops (%s)", sha1_to_hex(sha1));
+ die("oops (%s)", oid_to_hex(oid));
if (o->type == OBJ_COMMIT) {
struct commit_list *parents;
struct commit *commit = (struct commit *)o;
@@ -315,70 +338,22 @@ static int got_sha1(char *hex, unsigned char *sha1)
return 0;
}
-static int reachable(struct commit *want)
-{
- struct commit_list *work = NULL;
-
- commit_list_insert_by_date(want, &work);
- while (work) {
- struct commit_list *list;
- struct commit *commit = pop_commit(&work);
-
- if (commit->object.flags & THEY_HAVE) {
- want->object.flags |= COMMON_KNOWN;
- break;
- }
- if (!commit->object.parsed)
- parse_object(commit->object.oid.hash);
- if (commit->object.flags & REACHABLE)
- continue;
- commit->object.flags |= REACHABLE;
- if (commit->date < oldest_have)
- continue;
- for (list = commit->parents; list; list = list->next) {
- struct commit *parent = list->item;
- if (!(parent->object.flags & REACHABLE))
- commit_list_insert_by_date(parent, &work);
- }
- }
- want->object.flags |= REACHABLE;
- clear_commit_marks(want, REACHABLE);
- free_commit_list(work);
- return (want->object.flags & COMMON_KNOWN);
-}
-
static int ok_to_give_up(void)
{
- int i;
+ uint32_t min_generation = GENERATION_NUMBER_ZERO;
if (!have_obj.nr)
return 0;
- for (i = 0; i < want_obj.nr; i++) {
- struct object *want = want_obj.objects[i].item;
-
- if (want->flags & COMMON_KNOWN)
- continue;
- want = deref_tag(want, "a want line", 0);
- if (!want || want->type != OBJ_COMMIT) {
- /* no way to tell if this is reachable by
- * looking at the ancestry chain alone, so
- * leave a note to ourselves not to worry about
- * this object anymore.
- */
- want_obj.objects[i].item->flags |= COMMON_KNOWN;
- continue;
- }
- if (!reachable((struct commit *)want))
- return 0;
- }
- return 1;
+ return can_all_from_reach_with_flag(&want_obj, THEY_HAVE,
+ COMMON_KNOWN, oldest_have,
+ min_generation);
}
static int get_common_commits(void)
{
- unsigned char sha1[20];
- char last_hex[41];
+ struct object_id oid;
+ char last_hex[GIT_MAX_HEXSZ + 1];
int got_common = 0;
int got_other = 0;
int sent_ready = 0;
@@ -387,19 +362,21 @@ static int get_common_commits(void)
for (;;) {
char *line = packet_read_line(0, NULL);
+ const char *arg;
+
reset_timeout();
if (!line) {
if (multi_ack == 2 && got_common
&& !got_other && ok_to_give_up()) {
sent_ready = 1;
- packet_write(1, "ACK %s ready\n", last_hex);
+ packet_write_fmt(1, "ACK %s ready\n", last_hex);
}
if (have_obj.nr == 0 || multi_ack)
- packet_write(1, "NAK\n");
+ packet_write_fmt(1, "NAK\n");
if (no_done && sent_ready) {
- packet_write(1, "ACK %s\n", last_hex);
+ packet_write_fmt(1, "ACK %s\n", last_hex);
return 0;
}
if (stateless_rpc)
@@ -408,28 +385,28 @@ static int get_common_commits(void)
got_other = 0;
continue;
}
- if (starts_with(line, "have ")) {
- switch (got_sha1(line+5, sha1)) {
+ if (skip_prefix(line, "have ", &arg)) {
+ switch (got_oid(arg, &oid)) {
case -1: /* they have what we do not */
got_other = 1;
if (multi_ack && ok_to_give_up()) {
- const char *hex = sha1_to_hex(sha1);
+ const char *hex = oid_to_hex(&oid);
if (multi_ack == 2) {
sent_ready = 1;
- packet_write(1, "ACK %s ready\n", hex);
+ packet_write_fmt(1, "ACK %s ready\n", hex);
} else
- packet_write(1, "ACK %s continue\n", hex);
+ packet_write_fmt(1, "ACK %s continue\n", hex);
}
break;
default:
got_common = 1;
- memcpy(last_hex, sha1_to_hex(sha1), 41);
+ oid_to_hex_r(last_hex, &oid);
if (multi_ack == 2)
- packet_write(1, "ACK %s common\n", last_hex);
+ packet_write_fmt(1, "ACK %s common\n", last_hex);
else if (multi_ack)
- packet_write(1, "ACK %s continue\n", last_hex);
+ packet_write_fmt(1, "ACK %s continue\n", last_hex);
else if (have_obj.nr == 1)
- packet_write(1, "ACK %s\n", last_hex);
+ packet_write_fmt(1, "ACK %s\n", last_hex);
break;
}
continue;
@@ -437,10 +414,10 @@ static int get_common_commits(void)
if (!strcmp(line, "done")) {
if (have_obj.nr > 0) {
if (multi_ack)
- packet_write(1, "ACK %s\n", last_hex);
+ packet_write_fmt(1, "ACK %s\n", last_hex);
return 0;
}
- packet_write(1, "NAK\n");
+ packet_write_fmt(1, "NAK\n");
return -1;
}
die("git upload-pack: expected SHA1 list, got '%s'", line);
@@ -454,73 +431,138 @@ static int is_our_ref(struct object *o)
return o->flags & ((allow_hidden_ref ? HIDDEN_REF : 0) | OUR_REF);
}
-static void check_non_tip(void)
+/*
+ * on successful case, it's up to the caller to close cmd->out
+ */
+static int do_reachable_revlist(struct child_process *cmd,
+ struct object_array *src,
+ struct object_array *reachable)
{
static const char *argv[] = {
"rev-list", "--stdin", NULL,
};
- static struct child_process cmd = CHILD_PROCESS_INIT;
struct object *o;
- char namebuf[42]; /* ^ + SHA-1 + LF */
+ char namebuf[GIT_MAX_HEXSZ + 2]; /* ^ + hash + LF */
int i;
- /*
- * 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;
- cmd.git_cmd = 1;
- cmd.no_stderr = 1;
- cmd.in = -1;
- cmd.out = -1;
-
- if (start_command(&cmd))
- goto error;
+ cmd->argv = argv;
+ cmd->git_cmd = 1;
+ cmd->no_stderr = 1;
+ cmd->in = -1;
+ cmd->out = -1;
/*
- * If rev-list --stdin encounters an unknown commit, it
- * terminates, which will cause SIGPIPE in the write loop
+ * If the next rev-list --stdin encounters an unknown commit,
+ * it terminates, which will cause SIGPIPE in the write loop
* below.
*/
sigchain_push(SIGPIPE, SIG_IGN);
+ if (start_command(cmd))
+ goto error;
+
namebuf[0] = '^';
- namebuf[41] = '\n';
+ namebuf[GIT_SHA1_HEXSZ + 1] = '\n';
for (i = get_max_object_index(); 0 < i; ) {
o = get_indexed_object(--i);
if (!o)
continue;
+ if (reachable && o->type == OBJ_COMMIT)
+ o->flags &= ~TMP_MARK;
if (!is_our_ref(o))
continue;
memcpy(namebuf + 1, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ);
- if (write_in_full(cmd.in, namebuf, 42) < 0)
+ if (write_in_full(cmd->in, namebuf, GIT_SHA1_HEXSZ + 2) < 0)
goto error;
}
- namebuf[40] = '\n';
- for (i = 0; i < want_obj.nr; i++) {
- o = want_obj.objects[i].item;
- if (is_our_ref(o))
+ namebuf[GIT_SHA1_HEXSZ] = '\n';
+ for (i = 0; i < src->nr; i++) {
+ o = src->objects[i].item;
+ if (is_our_ref(o)) {
+ if (reachable)
+ add_object_array(o, NULL, reachable);
continue;
+ }
+ if (reachable && o->type == OBJ_COMMIT)
+ o->flags |= TMP_MARK;
memcpy(namebuf, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ);
- if (write_in_full(cmd.in, namebuf, 41) < 0)
+ if (write_in_full(cmd->in, namebuf, GIT_SHA1_HEXSZ + 1) < 0)
goto error;
}
- close(cmd.in);
+ close(cmd->in);
+ cmd->in = -1;
+ sigchain_pop(SIGPIPE);
+
+ return 0;
+error:
sigchain_pop(SIGPIPE);
+ if (cmd->in >= 0)
+ close(cmd->in);
+ if (cmd->out >= 0)
+ close(cmd->out);
+ return -1;
+}
+
+static int get_reachable_list(struct object_array *src,
+ struct object_array *reachable)
+{
+ struct child_process cmd = CHILD_PROCESS_INIT;
+ int i;
+ struct object *o;
+ char namebuf[GIT_MAX_HEXSZ + 2]; /* ^ + hash + LF */
+ const unsigned hexsz = the_hash_algo->hexsz;
+
+ if (do_reachable_revlist(&cmd, src, reachable) < 0)
+ return -1;
+
+ while ((i = read_in_full(cmd.out, namebuf, hexsz + 1)) == hexsz + 1) {
+ struct object_id sha1;
+ const char *p;
+
+ if (parse_oid_hex(namebuf, &sha1, &p) || *p != '\n')
+ break;
+
+ o = lookup_object(the_repository, sha1.hash);
+ if (o && o->type == OBJ_COMMIT) {
+ o->flags &= ~TMP_MARK;
+ }
+ }
+ for (i = get_max_object_index(); 0 < i; i--) {
+ o = get_indexed_object(i - 1);
+ if (o && o->type == OBJ_COMMIT &&
+ (o->flags & TMP_MARK)) {
+ add_object_array(o, NULL, reachable);
+ o->flags &= ~TMP_MARK;
+ }
+ }
+ close(cmd.out);
+
+ if (finish_command(&cmd))
+ return -1;
+
+ return 0;
+}
+
+static int has_unreachable(struct object_array *src)
+{
+ struct child_process cmd = CHILD_PROCESS_INIT;
+ char buf[1];
+ int i;
+
+ if (do_reachable_revlist(&cmd, src, NULL) < 0)
+ return 1;
+
/*
* The commits out of the rev-list are not ancestors of
* our ref.
*/
- i = read_in_full(cmd.out, namebuf, 1);
+ i = read_in_full(cmd.out, buf, 1);
if (i)
goto error;
close(cmd.out);
+ cmd.out = -1;
/*
* rev-list may have died by encountering a bad commit
@@ -531,64 +573,294 @@ static void check_non_tip(void)
goto error;
/* All the non-tip ones are ancestors of what we advertised */
- return;
+ return 0;
+
+error:
+ sigchain_pop(SIGPIPE);
+ if (cmd.out >= 0)
+ close(cmd.out);
+ return 1;
+}
+
+static void check_non_tip(void)
+{
+ int i;
+
+ /*
+ * 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;
+ if (!has_unreachable(&want_obj))
+ /* All the non-tip ones are ancestors of what we advertised */
+ return;
error:
/* Pick one of them (we know there at least is one) */
for (i = 0; i < want_obj.nr; i++) {
- o = want_obj.objects[i].item;
+ struct object *o = want_obj.objects[i].item;
if (!is_our_ref(o))
die("git upload-pack: not our ref %s",
oid_to_hex(&o->oid));
}
}
+static void send_shallow(struct commit_list *result)
+{
+ while (result) {
+ struct object *object = &result->item->object;
+ if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) {
+ packet_write_fmt(1, "shallow %s",
+ oid_to_hex(&object->oid));
+ register_shallow(the_repository, &object->oid);
+ shallow_nr++;
+ }
+ result = result->next;
+ }
+}
+
+static void send_unshallow(const struct object_array *shallows)
+{
+ int i;
+
+ for (i = 0; i < shallows->nr; i++) {
+ struct object *object = shallows->objects[i].item;
+ if (object->flags & NOT_SHALLOW) {
+ struct commit_list *parents;
+ packet_write_fmt(1, "unshallow %s",
+ oid_to_hex(&object->oid));
+ object->flags &= ~CLIENT_SHALLOW;
+ /*
+ * We want to _register_ "object" as shallow, but we
+ * also need to traverse object's parents to deepen a
+ * shallow clone. Unregister it for now so we can
+ * parse and add the parents to the want list, then
+ * re-register it.
+ */
+ unregister_shallow(&object->oid);
+ object->parsed = 0;
+ parse_commit_or_die((struct commit *)object);
+ parents = ((struct commit *)object)->parents;
+ while (parents) {
+ add_object_array(&parents->item->object,
+ NULL, &want_obj);
+ parents = parents->next;
+ }
+ add_object_array(object, NULL, &extra_edge_obj);
+ }
+ /* make sure commit traversal conforms to client */
+ register_shallow(the_repository, &object->oid);
+ }
+}
+
+static void deepen(int depth, int deepen_relative,
+ struct object_array *shallows)
+{
+ if (depth == INFINITE_DEPTH && !is_repository_shallow(the_repository)) {
+ int i;
+
+ for (i = 0; i < shallows->nr; i++) {
+ struct object *object = shallows->objects[i].item;
+ object->flags |= NOT_SHALLOW;
+ }
+ } else if (deepen_relative) {
+ struct object_array reachable_shallows = OBJECT_ARRAY_INIT;
+ struct commit_list *result;
+
+ get_reachable_list(shallows, &reachable_shallows);
+ result = get_shallow_commits(&reachable_shallows,
+ depth + 1,
+ SHALLOW, NOT_SHALLOW);
+ send_shallow(result);
+ free_commit_list(result);
+ object_array_clear(&reachable_shallows);
+ } else {
+ struct commit_list *result;
+
+ result = get_shallow_commits(&want_obj, depth,
+ SHALLOW, NOT_SHALLOW);
+ send_shallow(result);
+ free_commit_list(result);
+ }
+
+ send_unshallow(shallows);
+}
+
+static void deepen_by_rev_list(int ac, const char **av,
+ struct object_array *shallows)
+{
+ struct commit_list *result;
+
+ close_commit_graph(the_repository);
+ result = get_shallow_commits_by_rev_list(ac, av, SHALLOW, NOT_SHALLOW);
+ send_shallow(result);
+ free_commit_list(result);
+ send_unshallow(shallows);
+}
+
+/* Returns 1 if a shallow list is sent or 0 otherwise */
+static int send_shallow_list(int depth, int deepen_rev_list,
+ timestamp_t deepen_since,
+ struct string_list *deepen_not,
+ struct object_array *shallows)
+{
+ int ret = 0;
+
+ if (depth > 0 && deepen_rev_list)
+ die("git upload-pack: deepen and deepen-since (or deepen-not) cannot be used together");
+ if (depth > 0) {
+ deepen(depth, deepen_relative, shallows);
+ ret = 1;
+ } else if (deepen_rev_list) {
+ struct argv_array av = ARGV_ARRAY_INIT;
+ int i;
+
+ argv_array_push(&av, "rev-list");
+ if (deepen_since)
+ argv_array_pushf(&av, "--max-age=%"PRItime, deepen_since);
+ if (deepen_not->nr) {
+ argv_array_push(&av, "--not");
+ for (i = 0; i < deepen_not->nr; i++) {
+ struct string_list_item *s = deepen_not->items + i;
+ argv_array_push(&av, s->string);
+ }
+ argv_array_push(&av, "--not");
+ }
+ for (i = 0; i < want_obj.nr; i++) {
+ struct object *o = want_obj.objects[i].item;
+ argv_array_push(&av, oid_to_hex(&o->oid));
+ }
+ deepen_by_rev_list(av.argc, av.argv, shallows);
+ argv_array_clear(&av);
+ ret = 1;
+ } else {
+ if (shallows->nr > 0) {
+ int i;
+ for (i = 0; i < shallows->nr; i++)
+ register_shallow(the_repository,
+ &shallows->objects[i].item->oid);
+ }
+ }
+
+ shallow_nr += shallows->nr;
+ return ret;
+}
+
+static int process_shallow(const char *line, struct object_array *shallows)
+{
+ const char *arg;
+ if (skip_prefix(line, "shallow ", &arg)) {
+ struct object_id oid;
+ struct object *object;
+ if (get_oid_hex(arg, &oid))
+ die("invalid shallow line: %s", line);
+ object = parse_object(the_repository, &oid);
+ if (!object)
+ return 1;
+ if (object->type != OBJ_COMMIT)
+ die("invalid shallow object %s", oid_to_hex(&oid));
+ if (!(object->flags & CLIENT_SHALLOW)) {
+ object->flags |= CLIENT_SHALLOW;
+ add_object_array(object, NULL, shallows);
+ }
+ return 1;
+ }
+
+ return 0;
+}
+
+static int process_deepen(const char *line, int *depth)
+{
+ const char *arg;
+ if (skip_prefix(line, "deepen ", &arg)) {
+ char *end = NULL;
+ *depth = (int)strtol(arg, &end, 0);
+ if (!end || *end || *depth <= 0)
+ die("Invalid deepen: %s", line);
+ return 1;
+ }
+
+ return 0;
+}
+
+static int process_deepen_since(const char *line, timestamp_t *deepen_since, int *deepen_rev_list)
+{
+ const char *arg;
+ if (skip_prefix(line, "deepen-since ", &arg)) {
+ char *end = NULL;
+ *deepen_since = parse_timestamp(arg, &end, 0);
+ if (!end || *end || !deepen_since ||
+ /* revisions.c's max_age -1 is special */
+ *deepen_since == -1)
+ die("Invalid deepen-since: %s", line);
+ *deepen_rev_list = 1;
+ return 1;
+ }
+ return 0;
+}
+
+static int process_deepen_not(const char *line, struct string_list *deepen_not, int *deepen_rev_list)
+{
+ const char *arg;
+ if (skip_prefix(line, "deepen-not ", &arg)) {
+ char *ref = NULL;
+ struct object_id oid;
+ if (expand_ref(arg, strlen(arg), &oid, &ref) != 1)
+ die("git upload-pack: ambiguous deepen-not: %s", line);
+ string_list_append(deepen_not, ref);
+ free(ref);
+ *deepen_rev_list = 1;
+ return 1;
+ }
+ return 0;
+}
+
static void receive_needs(void)
{
struct object_array shallows = OBJECT_ARRAY_INIT;
+ struct string_list deepen_not = STRING_LIST_INIT_DUP;
int depth = 0;
int has_non_tip = 0;
+ timestamp_t deepen_since = 0;
+ int deepen_rev_list = 0;
shallow_nr = 0;
for (;;) {
struct object *o;
const char *features;
- unsigned char sha1_buf[20];
+ struct object_id oid_buf;
char *line = packet_read_line(0, NULL);
+ const char *arg;
+
reset_timeout();
if (!line)
break;
- if (starts_with(line, "shallow ")) {
- unsigned char sha1[20];
- struct object *object;
- if (get_sha1_hex(line + 8, sha1))
- die("invalid shallow line: %s", line);
- object = parse_object(sha1);
- if (!object)
- continue;
- if (object->type != OBJ_COMMIT)
- die("invalid shallow object %s", sha1_to_hex(sha1));
- if (!(object->flags & CLIENT_SHALLOW)) {
- object->flags |= CLIENT_SHALLOW;
- add_object_array(object, NULL, &shallows);
- }
+ if (process_shallow(line, &shallows))
continue;
- }
- if (starts_with(line, "deepen ")) {
- char *end;
- depth = strtol(line + 7, &end, 0);
- if (end == line + 7 || depth <= 0)
- die("Invalid deepen: %s", line);
+ if (process_deepen(line, &depth))
+ continue;
+ if (process_deepen_since(line, &deepen_since, &deepen_rev_list))
+ continue;
+ if (process_deepen_not(line, &deepen_not, &deepen_rev_list))
+ continue;
+
+ if (skip_prefix(line, "filter ", &arg)) {
+ if (!filter_capability_requested)
+ die("git upload-pack: filtering capability not negotiated");
+ parse_list_objects_filter(&filter_options, arg);
continue;
}
- if (!starts_with(line, "want ") ||
- get_sha1_hex(line+5, sha1_buf))
- die("git upload-pack: protocol error, "
- "expected to get sha, not '%s'", line);
- features = line + 45;
+ if (!skip_prefix(line, "want ", &arg) ||
+ parse_oid_hex(arg, &oid_buf, &features))
+ die("git upload-pack: protocol error, "
+ "expected to get object ID, not '%s'", line);
+ if (parse_feature_request(features, "deepen-relative"))
+ deepen_relative = 1;
if (parse_feature_request(features, "multi_ack_detailed"))
multi_ack = 2;
else if (parse_feature_request(features, "multi_ack"))
@@ -607,14 +879,21 @@ static void receive_needs(void)
no_progress = 1;
if (parse_feature_request(features, "include-tag"))
use_include_tag = 1;
-
- o = parse_object(sha1_buf);
- if (!o)
+ if (allow_filter && parse_feature_request(features, "filter"))
+ filter_capability_requested = 1;
+
+ o = parse_object(the_repository, &oid_buf);
+ if (!o) {
+ packet_write_fmt(1,
+ "ERR upload-pack: not our ref %s",
+ oid_to_hex(&oid_buf));
die("git upload-pack: not our ref %s",
- sha1_to_hex(sha1_buf));
+ oid_to_hex(&oid_buf));
+ }
if (!(o->flags & WANTED)) {
o->flags |= WANTED;
- if (!is_our_ref(o))
+ if (!((allow_unadvertised_object_request & ALLOW_ANY_SHA1) == ALLOW_ANY_SHA1
+ || is_our_ref(o)))
has_non_tip = 1;
add_object_array(o, NULL, &want_obj);
}
@@ -633,63 +912,13 @@ static void receive_needs(void)
if (!use_sideband && daemon_mode)
no_progress = 1;
- if (depth == 0 && shallows.nr == 0)
+ if (depth == 0 && !deepen_rev_list && shallows.nr == 0)
return;
- if (depth > 0) {
- struct commit_list *result = NULL, *backup = NULL;
- int i;
- if (depth == INFINITE_DEPTH && !is_repository_shallow())
- for (i = 0; i < shallows.nr; i++) {
- struct object *object = shallows.objects[i].item;
- object->flags |= NOT_SHALLOW;
- }
- else
- backup = result =
- get_shallow_commits(&want_obj, depth,
- SHALLOW, NOT_SHALLOW);
- while (result) {
- struct object *object = &result->item->object;
- if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) {
- packet_write(1, "shallow %s",
- oid_to_hex(&object->oid));
- register_shallow(object->oid.hash);
- shallow_nr++;
- }
- result = result->next;
- }
- free_commit_list(backup);
- for (i = 0; i < shallows.nr; i++) {
- struct object *object = shallows.objects[i].item;
- if (object->flags & NOT_SHALLOW) {
- struct commit_list *parents;
- packet_write(1, "unshallow %s",
- oid_to_hex(&object->oid));
- object->flags &= ~CLIENT_SHALLOW;
- /* make sure the real parents are parsed */
- unregister_shallow(object->oid.hash);
- object->parsed = 0;
- parse_commit_or_die((struct commit *)object);
- parents = ((struct commit *)object)->parents;
- while (parents) {
- add_object_array(&parents->item->object,
- NULL, &want_obj);
- parents = parents->next;
- }
- add_object_array(object, NULL, &extra_edge_obj);
- }
- /* make sure commit traversal conforms to client */
- register_shallow(object->oid.hash);
- }
- packet_flush(1);
- } else
- if (shallows.nr > 0) {
- int i;
- for (i = 0; i < shallows.nr; i++)
- register_shallow(shallows.objects[i].item->oid.hash);
- }
- shallow_nr += shallows.nr;
- free(shallows.objects);
+ if (send_shallow_list(depth, deepen_rev_list, deepen_since,
+ &deepen_not, &shallows))
+ packet_flush(1);
+ object_array_clear(&shallows);
}
/* return non-zero if the ref is hidden, otherwise 0 */
@@ -729,8 +958,8 @@ static int send_ref(const char *refname, const struct object_id *oid,
int flag, void *cb_data)
{
static const char *capabilities = "multi_ack thin-pack side-band"
- " side-band-64k ofs-delta shallow no-progress"
- " include-tag multi_ack_detailed";
+ " side-band-64k ofs-delta shallow deepen-since deepen-not"
+ " deepen-relative no-progress include-tag multi_ack_detailed";
const char *refname_nons = strip_namespace(refname);
struct object_id peeled;
@@ -741,7 +970,7 @@ static int send_ref(const char *refname, const struct object_id *oid,
struct strbuf symref_info = STRBUF_INIT;
format_symref_info(&symref_info, cb_data);
- packet_write(1, "%s %s%c%s%s%s%s%s agent=%s\n",
+ packet_write_fmt(1, "%s %s%c%s%s%s%s%s%s agent=%s\n",
oid_to_hex(oid), refname_nons,
0, capabilities,
(allow_unadvertised_object_request & ALLOW_TIP_SHA1) ?
@@ -750,14 +979,15 @@ static int send_ref(const char *refname, const struct object_id *oid,
" allow-reachable-sha1-in-want" : "",
stateless_rpc ? " no-done" : "",
symref_info.buf,
+ allow_filter ? " filter" : "",
git_user_agent_sanitized());
strbuf_release(&symref_info);
} else {
- packet_write(1, "%s %s\n", oid_to_hex(oid), refname_nons);
+ packet_write_fmt(1, "%s %s\n", oid_to_hex(oid), refname_nons);
}
capabilities = NULL;
- if (!peel_ref(refname, peeled.hash))
- packet_write(1, "%s %s^{}\n", oid_to_hex(&peeled), refname_nons);
+ if (!peel_ref(refname, &peeled))
+ packet_write_fmt(1, "%s %s^{}\n", oid_to_hex(&peeled), refname_nons);
return 0;
}
@@ -766,11 +996,10 @@ static int find_symref(const char *refname, const struct object_id *oid,
{
const char *symref_target;
struct string_list_item *item;
- struct object_id unused;
if ((flag & REF_ISSYMREF) == 0)
return 0;
- symref_target = resolve_ref_unsafe(refname, 0, unused.hash, &flag);
+ symref_target = resolve_ref_unsafe(refname, 0, NULL, &flag);
if (!symref_target || (flag & REF_ISSYMREF) == 0)
die("'%s' is a symref but it is not?", refname);
item = string_list_append(cb_data, refname);
@@ -778,13 +1007,51 @@ static int find_symref(const char *refname, const struct object_id *oid,
return 0;
}
-static void upload_pack(void)
+static int upload_pack_config(const char *var, const char *value, void *unused)
+{
+ if (!strcmp("uploadpack.allowtipsha1inwant", var)) {
+ if (git_config_bool(var, value))
+ 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.allowanysha1inwant", var)) {
+ if (git_config_bool(var, value))
+ allow_unadvertised_object_request |= ALLOW_ANY_SHA1;
+ else
+ allow_unadvertised_object_request &= ~ALLOW_ANY_SHA1;
+ } else if (!strcmp("uploadpack.keepalive", var)) {
+ keepalive = git_config_int(var, value);
+ if (!keepalive)
+ keepalive = -1;
+ } else if (current_config_scope() != CONFIG_SCOPE_REPO) {
+ if (!strcmp("uploadpack.packobjectshook", var))
+ return git_config_string(&pack_objects_hook, var, value);
+ } else if (!strcmp("uploadpack.allowfilter", var)) {
+ allow_filter = git_config_bool(var, value);
+ } else if (!strcmp("uploadpack.allowrefinwant", var)) {
+ allow_ref_in_want = git_config_bool(var, value);
+ }
+ return parse_hide_refs_config(var, value, "uploadpack");
+}
+
+void upload_pack(struct upload_pack_options *options)
{
struct string_list symref = STRING_LIST_INIT_DUP;
+ stateless_rpc = options->stateless_rpc;
+ timeout = options->timeout;
+ daemon_mode = options->daemon_mode;
+
+ git_config(upload_pack_config, NULL);
+
head_ref_namespaced(find_symref, &symref);
- if (advertise_refs || !stateless_rpc) {
+ if (options->advertise_refs || !stateless_rpc) {
reset_timeout();
head_ref_namespaced(send_ref, &symref);
for_each_namespaced_ref(send_ref, &symref);
@@ -795,7 +1062,7 @@ static void upload_pack(void)
for_each_namespaced_ref(check_ref, NULL);
}
string_list_clear(&symref, 1);
- if (advertise_refs)
+ if (options->advertise_refs)
return;
receive_needs();
@@ -805,64 +1072,402 @@ static void upload_pack(void)
}
}
-static int upload_pack_config(const char *var, const char *value, void *unused)
+struct upload_pack_data {
+ struct object_array wants;
+ struct string_list wanted_refs;
+ struct oid_array haves;
+
+ struct object_array shallows;
+ struct string_list deepen_not;
+ int depth;
+ timestamp_t deepen_since;
+ int deepen_rev_list;
+ int deepen_relative;
+
+ unsigned stateless_rpc : 1;
+
+ unsigned use_thin_pack : 1;
+ unsigned use_ofs_delta : 1;
+ unsigned no_progress : 1;
+ unsigned use_include_tag : 1;
+ unsigned done : 1;
+};
+
+static void upload_pack_data_init(struct upload_pack_data *data)
{
- if (!strcmp("uploadpack.allowtipsha1inwant", var)) {
- if (git_config_bool(var, value))
- 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)
- keepalive = -1;
- } else if (current_config_scope() != CONFIG_SCOPE_REPO) {
- if (!strcmp("uploadpack.packobjectshook", var))
- return git_config_string(&pack_objects_hook, var, value);
+ struct object_array wants = OBJECT_ARRAY_INIT;
+ struct string_list wanted_refs = STRING_LIST_INIT_DUP;
+ struct oid_array haves = OID_ARRAY_INIT;
+ struct object_array shallows = OBJECT_ARRAY_INIT;
+ struct string_list deepen_not = STRING_LIST_INIT_DUP;
+
+ memset(data, 0, sizeof(*data));
+ data->wants = wants;
+ data->wanted_refs = wanted_refs;
+ data->haves = haves;
+ data->shallows = shallows;
+ data->deepen_not = deepen_not;
+}
+
+static void upload_pack_data_clear(struct upload_pack_data *data)
+{
+ object_array_clear(&data->wants);
+ string_list_clear(&data->wanted_refs, 1);
+ oid_array_clear(&data->haves);
+ object_array_clear(&data->shallows);
+ string_list_clear(&data->deepen_not, 0);
+}
+
+static int parse_want(const char *line)
+{
+ const char *arg;
+ if (skip_prefix(line, "want ", &arg)) {
+ struct object_id oid;
+ struct object *o;
+
+ if (get_oid_hex(arg, &oid))
+ die("git upload-pack: protocol error, "
+ "expected to get oid, not '%s'", line);
+
+ o = parse_object(the_repository, &oid);
+ if (!o) {
+ packet_write_fmt(1,
+ "ERR upload-pack: not our ref %s",
+ oid_to_hex(&oid));
+ die("git upload-pack: not our ref %s",
+ oid_to_hex(&oid));
+ }
+
+ if (!(o->flags & WANTED)) {
+ o->flags |= WANTED;
+ add_object_array(o, NULL, &want_obj);
+ }
+
+ return 1;
}
- return parse_hide_refs_config(var, value, "uploadpack");
+
+ return 0;
}
-int cmd_main(int argc, const char **argv)
-{
- const char *dir;
- int strict = 0;
- struct option options[] = {
- OPT_BOOL(0, "stateless-rpc", &stateless_rpc,
- N_("quit after a single request/response exchange")),
- OPT_BOOL(0, "advertise-refs", &advertise_refs,
- N_("exit immediately after intial ref advertisement")),
- OPT_BOOL(0, "strict", &strict,
- N_("do not try <directory>/.git/ if <directory> is no Git directory")),
- OPT_INTEGER(0, "timeout", &timeout,
- N_("interrupt transfer after <n> seconds of inactivity")),
- OPT_END()
- };
+static int parse_want_ref(const char *line, struct string_list *wanted_refs)
+{
+ const char *arg;
+ if (skip_prefix(line, "want-ref ", &arg)) {
+ struct object_id oid;
+ struct string_list_item *item;
+ struct object *o;
+
+ if (read_ref(arg, &oid)) {
+ packet_write_fmt(1, "ERR unknown ref %s", arg);
+ die("unknown ref %s", arg);
+ }
- packet_trace_identity("upload-pack");
- check_replace_refs = 0;
+ item = string_list_append(wanted_refs, arg);
+ item->util = oiddup(&oid);
- argc = parse_options(argc, argv, NULL, options, upload_pack_usage, 0);
+ o = parse_object_or_die(&oid, arg);
+ if (!(o->flags & WANTED)) {
+ o->flags |= WANTED;
+ add_object_array(o, NULL, &want_obj);
+ }
+
+ return 1;
+ }
+
+ return 0;
+}
- if (argc != 1)
- usage_with_options(upload_pack_usage, options);
+static int parse_have(const char *line, struct oid_array *haves)
+{
+ const char *arg;
+ if (skip_prefix(line, "have ", &arg)) {
+ struct object_id oid;
- if (timeout)
- daemon_mode = 1;
+ if (get_oid_hex(arg, &oid))
+ die("git upload-pack: expected SHA1 object, got '%s'", arg);
+ oid_array_append(haves, &oid);
+ return 1;
+ }
- setup_path();
+ return 0;
+}
- dir = argv[0];
+static void process_args(struct packet_reader *request,
+ struct upload_pack_data *data)
+{
+ while (packet_reader_read(request) != PACKET_READ_FLUSH) {
+ const char *arg = request->line;
+ const char *p;
- if (!enter_repo(dir, strict))
- die("'%s' does not appear to be a git repository", dir);
+ /* process want */
+ if (parse_want(arg))
+ continue;
+ if (allow_ref_in_want && parse_want_ref(arg, &data->wanted_refs))
+ continue;
+ /* process have line */
+ if (parse_have(arg, &data->haves))
+ continue;
+
+ /* process args like thin-pack */
+ if (!strcmp(arg, "thin-pack")) {
+ use_thin_pack = 1;
+ continue;
+ }
+ if (!strcmp(arg, "ofs-delta")) {
+ use_ofs_delta = 1;
+ continue;
+ }
+ if (!strcmp(arg, "no-progress")) {
+ no_progress = 1;
+ continue;
+ }
+ if (!strcmp(arg, "include-tag")) {
+ use_include_tag = 1;
+ continue;
+ }
+ if (!strcmp(arg, "done")) {
+ data->done = 1;
+ continue;
+ }
+
+ /* Shallow related arguments */
+ if (process_shallow(arg, &data->shallows))
+ continue;
+ if (process_deepen(arg, &data->depth))
+ continue;
+ if (process_deepen_since(arg, &data->deepen_since,
+ &data->deepen_rev_list))
+ continue;
+ if (process_deepen_not(arg, &data->deepen_not,
+ &data->deepen_rev_list))
+ continue;
+ if (!strcmp(arg, "deepen-relative")) {
+ data->deepen_relative = 1;
+ continue;
+ }
+
+ if (allow_filter && skip_prefix(arg, "filter ", &p)) {
+ parse_list_objects_filter(&filter_options, p);
+ continue;
+ }
+
+ /* ignore unknown lines maybe? */
+ die("unexpected line: '%s'", arg);
+ }
+}
+
+static int process_haves(struct oid_array *haves, struct oid_array *common)
+{
+ int i;
+
+ /* Process haves */
+ for (i = 0; i < haves->nr; i++) {
+ const struct object_id *oid = &haves->oid[i];
+ struct object *o;
+ int we_knew_they_have = 0;
+
+ if (!has_object_file(oid))
+ continue;
+
+ oid_array_append(common, oid);
+
+ o = parse_object(the_repository, oid);
+ if (!o)
+ die("oops (%s)", oid_to_hex(oid));
+ if (o->type == OBJ_COMMIT) {
+ struct commit_list *parents;
+ struct commit *commit = (struct commit *)o;
+ if (o->flags & THEY_HAVE)
+ we_knew_they_have = 1;
+ else
+ o->flags |= THEY_HAVE;
+ if (!oldest_have || (commit->date < oldest_have))
+ oldest_have = commit->date;
+ for (parents = commit->parents;
+ parents;
+ parents = parents->next)
+ parents->item->object.flags |= THEY_HAVE;
+ }
+ if (!we_knew_they_have)
+ add_object_array(o, NULL, &have_obj);
+ }
+
+ return 0;
+}
+
+static int send_acks(struct oid_array *acks, struct strbuf *response)
+{
+ int i;
+
+ packet_buf_write(response, "acknowledgments\n");
+
+ /* Send Acks */
+ if (!acks->nr)
+ packet_buf_write(response, "NAK\n");
+
+ for (i = 0; i < acks->nr; i++) {
+ packet_buf_write(response, "ACK %s\n",
+ oid_to_hex(&acks->oid[i]));
+ }
+
+ if (ok_to_give_up()) {
+ /* Send Ready */
+ packet_buf_write(response, "ready\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+static int process_haves_and_send_acks(struct upload_pack_data *data)
+{
+ struct oid_array common = OID_ARRAY_INIT;
+ struct strbuf response = STRBUF_INIT;
+ int ret = 0;
+
+ process_haves(&data->haves, &common);
+ if (data->done) {
+ ret = 1;
+ } else if (send_acks(&common, &response)) {
+ packet_buf_delim(&response);
+ ret = 1;
+ } else {
+ /* Add Flush */
+ packet_buf_flush(&response);
+ ret = 0;
+ }
+
+ /* Send response */
+ write_or_die(1, response.buf, response.len);
+ strbuf_release(&response);
+
+ oid_array_clear(&data->haves);
+ oid_array_clear(&common);
+ return ret;
+}
+
+static void send_wanted_ref_info(struct upload_pack_data *data)
+{
+ const struct string_list_item *item;
+
+ if (!data->wanted_refs.nr)
+ return;
+
+ packet_write_fmt(1, "wanted-refs\n");
+
+ for_each_string_list_item(item, &data->wanted_refs) {
+ packet_write_fmt(1, "%s %s\n",
+ oid_to_hex(item->util),
+ item->string);
+ }
+
+ packet_delim(1);
+}
+
+static void send_shallow_info(struct upload_pack_data *data)
+{
+ /* No shallow info needs to be sent */
+ if (!data->depth && !data->deepen_rev_list && !data->shallows.nr &&
+ !is_repository_shallow(the_repository))
+ return;
+
+ packet_write_fmt(1, "shallow-info\n");
+
+ if (!send_shallow_list(data->depth, data->deepen_rev_list,
+ data->deepen_since, &data->deepen_not,
+ &data->shallows) &&
+ is_repository_shallow(the_repository))
+ deepen(INFINITE_DEPTH, data->deepen_relative, &data->shallows);
+
+ packet_delim(1);
+}
+
+enum fetch_state {
+ FETCH_PROCESS_ARGS = 0,
+ FETCH_SEND_ACKS,
+ FETCH_SEND_PACK,
+ FETCH_DONE,
+};
+
+int upload_pack_v2(struct repository *r, struct argv_array *keys,
+ struct packet_reader *request)
+{
+ enum fetch_state state = FETCH_PROCESS_ARGS;
+ struct upload_pack_data data;
git_config(upload_pack_config, NULL);
- upload_pack();
+
+ upload_pack_data_init(&data);
+ use_sideband = LARGE_PACKET_MAX;
+
+ while (state != FETCH_DONE) {
+ switch (state) {
+ case FETCH_PROCESS_ARGS:
+ process_args(request, &data);
+
+ if (!want_obj.nr) {
+ /*
+ * Request didn't contain any 'want' lines,
+ * guess they didn't want anything.
+ */
+ state = FETCH_DONE;
+ } else if (data.haves.nr) {
+ /*
+ * Request had 'have' lines, so lets ACK them.
+ */
+ state = FETCH_SEND_ACKS;
+ } else {
+ /*
+ * Request had 'want's but no 'have's so we can
+ * immedietly go to construct and send a pack.
+ */
+ state = FETCH_SEND_PACK;
+ }
+ break;
+ case FETCH_SEND_ACKS:
+ if (process_haves_and_send_acks(&data))
+ state = FETCH_SEND_PACK;
+ else
+ state = FETCH_DONE;
+ break;
+ case FETCH_SEND_PACK:
+ send_wanted_ref_info(&data);
+ send_shallow_info(&data);
+
+ packet_write_fmt(1, "packfile\n");
+ create_pack_file();
+ state = FETCH_DONE;
+ break;
+ case FETCH_DONE:
+ continue;
+ }
+ }
+
+ upload_pack_data_clear(&data);
return 0;
}
+
+int upload_pack_advertise(struct repository *r,
+ struct strbuf *value)
+{
+ if (value) {
+ int allow_filter_value;
+ int allow_ref_in_want;
+
+ strbuf_addstr(value, "shallow");
+
+ if (!repo_config_get_bool(the_repository,
+ "uploadpack.allowfilter",
+ &allow_filter_value) &&
+ allow_filter_value)
+ strbuf_addstr(value, " filter");
+
+ if (!repo_config_get_bool(the_repository,
+ "uploadpack.allowrefinwant",
+ &allow_ref_in_want) &&
+ allow_ref_in_want)
+ strbuf_addstr(value, " ref-in-want");
+ }
+
+ return 1;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-13 19:46:48 +0000