#include "revision.h"
#include "list-objects.h"
#include "run-command.h"
+#include "connect.h"
#include "sigchain.h"
#include "version.h"
#include "string-list.h"
static const char upload_pack_usage[] = "git upload-pack [--strict] [--timeout=<n>] <dir>";
-/* bits #0..7 in revision.h, #8..10 in commit.c */
+/* Remember to update object flag allocation in object.h */
#define THEY_HAVE (1u << 11)
#define OUR_REF (1u << 12)
#define WANTED (1u << 13)
static int no_done;
static int use_thin_pack, use_ofs_delta, use_include_tag;
static int no_progress, daemon_mode;
-static int allow_tip_sha1_in_want;
+/* Allow specifying sha1 if it is a ref tip. */
+#define ALLOW_TIP_SHA1 01
+/* Allow request of a sha1 if it is reachable from a ref (possibly hidden ref). */
+#define ALLOW_REACHABLE_SHA1 02
+static unsigned int allow_unadvertised_object_request;
static int shallow_nr;
static struct object_array have_obj;
static struct object_array want_obj;
return sz;
}
-static FILE *pack_pipe = NULL;
-static void show_commit(struct commit *commit, void *data)
+static int write_one_shallow(const struct commit_graft *graft, void *cb_data)
{
- if (commit->object.flags & BOUNDARY)
- fputc('-', pack_pipe);
- if (fputs(sha1_to_hex(commit->object.sha1), pack_pipe) < 0)
- die("broken output pipe");
- fputc('\n', pack_pipe);
- fflush(pack_pipe);
- free(commit->buffer);
- commit->buffer = NULL;
-}
-
-static void show_object(struct object *obj,
- const struct name_path *path, const char *component,
- void *cb_data)
-{
- show_object_with_name(pack_pipe, obj, path, component);
-}
-
-static void show_edge(struct commit *commit)
-{
- fprintf(pack_pipe, "-%s\n", sha1_to_hex(commit->object.sha1));
-}
-
-static int do_rev_list(int in, int out, void *user_data)
-{
- int i;
- struct rev_info revs;
-
- pack_pipe = xfdopen(out, "w");
- init_revisions(&revs, NULL);
- revs.tag_objects = 1;
- revs.tree_objects = 1;
- revs.blob_objects = 1;
- if (use_thin_pack)
- revs.edge_hint = 1;
-
- for (i = 0; i < want_obj.nr; i++) {
- struct object *o = want_obj.objects[i].item;
- /* why??? */
- o->flags &= ~UNINTERESTING;
- add_pending_object(&revs, o, NULL);
- }
- for (i = 0; i < have_obj.nr; i++) {
- struct object *o = have_obj.objects[i].item;
- o->flags |= UNINTERESTING;
- add_pending_object(&revs, o, NULL);
- }
- setup_revisions(0, NULL, &revs, NULL);
- if (prepare_revision_walk(&revs))
- die("revision walk setup failed");
- mark_edges_uninteresting(revs.commits, &revs, show_edge);
- if (use_thin_pack)
- for (i = 0; i < extra_edge_obj.nr; i++)
- fprintf(pack_pipe, "-%s\n", sha1_to_hex(
- extra_edge_obj.objects[i].item->sha1));
- traverse_commit_list(&revs, show_commit, show_object, NULL);
- fflush(pack_pipe);
- fclose(pack_pipe);
+ FILE *fp = cb_data;
+ if (graft->nr_parent == -1)
+ fprintf(fp, "--shallow %s\n", oid_to_hex(&graft->oid));
return 0;
}
static void create_pack_file(void)
{
- struct async rev_list;
- struct child_process pack_objects;
+ struct child_process pack_objects = CHILD_PROCESS_INIT;
char data[8193], progress[128];
char abort_msg[] = "aborting due to possible repository "
"corruption on the remote side.";
int buffered = -1;
ssize_t sz;
- const char *argv[10];
- int arg = 0;
-
- argv[arg++] = "pack-objects";
- if (!shallow_nr) {
- argv[arg++] = "--revs";
- if (use_thin_pack)
- argv[arg++] = "--thin";
+ int i;
+ FILE *pipe_fd;
+
+ if (shallow_nr) {
+ argv_array_push(&pack_objects.args, "--shallow-file");
+ argv_array_push(&pack_objects.args, "");
}
+ argv_array_push(&pack_objects.args, "pack-objects");
+ argv_array_push(&pack_objects.args, "--revs");
+ if (use_thin_pack)
+ argv_array_push(&pack_objects.args, "--thin");
- argv[arg++] = "--stdout";
+ argv_array_push(&pack_objects.args, "--stdout");
+ if (shallow_nr)
+ argv_array_push(&pack_objects.args, "--shallow");
if (!no_progress)
- argv[arg++] = "--progress";
+ argv_array_push(&pack_objects.args, "--progress");
if (use_ofs_delta)
- argv[arg++] = "--delta-base-offset";
+ argv_array_push(&pack_objects.args, "--delta-base-offset");
if (use_include_tag)
- argv[arg++] = "--include-tag";
- argv[arg++] = NULL;
+ argv_array_push(&pack_objects.args, "--include-tag");
- memset(&pack_objects, 0, sizeof(pack_objects));
pack_objects.in = -1;
pack_objects.out = -1;
pack_objects.err = -1;
pack_objects.git_cmd = 1;
- pack_objects.argv = argv;
if (start_command(&pack_objects))
die("git upload-pack: unable to fork git-pack-objects");
- if (shallow_nr) {
- memset(&rev_list, 0, sizeof(rev_list));
- rev_list.proc = do_rev_list;
- rev_list.out = pack_objects.in;
- if (start_async(&rev_list))
- die("git upload-pack: unable to fork git-rev-list");
- }
- else {
- FILE *pipe_fd = xfdopen(pack_objects.in, "w");
- int i;
-
- for (i = 0; i < want_obj.nr; i++)
- fprintf(pipe_fd, "%s\n",
- sha1_to_hex(want_obj.objects[i].item->sha1));
- fprintf(pipe_fd, "--not\n");
- for (i = 0; i < have_obj.nr; i++)
- fprintf(pipe_fd, "%s\n",
- sha1_to_hex(have_obj.objects[i].item->sha1));
- fprintf(pipe_fd, "\n");
- fflush(pipe_fd);
- fclose(pipe_fd);
- }
-
+ pipe_fd = xfdopen(pack_objects.in, "w");
+
+ if (shallow_nr)
+ for_each_commit_graft(write_one_shallow, pipe_fd);
+
+ for (i = 0; i < want_obj.nr; i++)
+ fprintf(pipe_fd, "%s\n",
+ oid_to_hex(&want_obj.objects[i].item->oid));
+ fprintf(pipe_fd, "--not\n");
+ for (i = 0; i < have_obj.nr; i++)
+ fprintf(pipe_fd, "%s\n",
+ oid_to_hex(&have_obj.objects[i].item->oid));
+ for (i = 0; i < extra_edge_obj.nr; i++)
+ fprintf(pipe_fd, "%s\n",
+ oid_to_hex(&extra_edge_obj.objects[i].item->oid));
+ fprintf(pipe_fd, "\n");
+ fflush(pipe_fd);
+ fclose(pipe_fd);
/* We read from pack_objects.err to capture stderr output for
* progress bar, and pack_objects.out to capture the pack data.
if (!pollsize)
break;
- ret = poll(pfd, pollsize, 1000 * keepalive);
+ ret = poll(pfd, pollsize,
+ keepalive < 0 ? -1 : 1000 * keepalive);
+
if (ret < 0) {
if (errno != EINTR) {
error("poll failed, resuming: %s",
error("git upload-pack: git-pack-objects died with error.");
goto fail;
}
- if (shallow_nr && finish_async(&rev_list))
- goto fail; /* error was already reported */
/* flush the data */
if (0 <= buffered) {
commit_list_insert_by_date(want, &work);
while (work) {
- struct commit_list *list = work->next;
- struct commit *commit = work->item;
- free(work);
- work = list;
+ 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.sha1);
+ parse_object(commit->object.oid.hash);
if (commit->object.flags & REACHABLE)
continue;
commit->object.flags |= REACHABLE;
got_other = 0;
continue;
}
- if (!prefixcmp(line, "have ")) {
+ if (starts_with(line, "have ")) {
switch (got_sha1(line+5, sha1)) {
case -1: /* they have what we do not */
got_other = 1;
static int is_our_ref(struct object *o)
{
- return o->flags &
- ((allow_tip_sha1_in_want ? HIDDEN_REF : 0) | OUR_REF);
+ int allow_hidden_ref = (allow_unadvertised_object_request &
+ (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1));
+ return o->flags & ((allow_hidden_ref ? HIDDEN_REF : 0) | OUR_REF);
}
static void check_non_tip(void)
static const char *argv[] = {
"rev-list", "--stdin", NULL,
};
- static struct child_process cmd;
+ static struct child_process cmd = CHILD_PROCESS_INIT;
struct object *o;
char namebuf[42]; /* ^ + SHA-1 + LF */
int i;
- /* In the normal in-process case non-tip request can never happen */
- if (!stateless_rpc)
+ /*
+ * In the normal in-process case without
+ * uploadpack.allowReachableSHA1InWant,
+ * non-tip requests can never happen.
+ */
+ if (!stateless_rpc && !(allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1))
goto error;
cmd.argv = argv;
continue;
if (!is_our_ref(o))
continue;
- memcpy(namebuf + 1, sha1_to_hex(o->sha1), 40);
+ memcpy(namebuf + 1, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ);
if (write_in_full(cmd.in, namebuf, 42) < 0)
goto error;
}
o = want_obj.objects[i].item;
if (is_our_ref(o))
continue;
- memcpy(namebuf, sha1_to_hex(o->sha1), 40);
+ memcpy(namebuf, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ);
if (write_in_full(cmd.in, namebuf, 41) < 0)
goto error;
}
o = want_obj.objects[i].item;
if (!is_our_ref(o))
die("git upload-pack: not our ref %s",
- sha1_to_hex(o->sha1));
+ oid_to_hex(&o->oid));
}
}
if (!line)
break;
- if (!prefixcmp(line, "shallow ")) {
+ if (starts_with(line, "shallow ")) {
unsigned char sha1[20];
struct object *object;
if (get_sha1_hex(line + 8, sha1))
}
continue;
}
- if (!prefixcmp(line, "deepen ")) {
+ if (starts_with(line, "deepen ")) {
char *end;
depth = strtol(line + 7, &end, 0);
if (end == line + 7 || depth <= 0)
die("Invalid deepen: %s", line);
continue;
}
- if (prefixcmp(line, "want ") ||
+ 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);
if (depth > 0) {
struct commit_list *result = NULL, *backup = NULL;
int i;
- if (depth == INFINITE_DEPTH)
+ 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;
struct object *object = &result->item->object;
if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) {
packet_write(1, "shallow %s",
- sha1_to_hex(object->sha1));
- register_shallow(object->sha1);
+ oid_to_hex(&object->oid));
+ register_shallow(object->oid.hash);
shallow_nr++;
}
result = result->next;
if (object->flags & NOT_SHALLOW) {
struct commit_list *parents;
packet_write(1, "unshallow %s",
- sha1_to_hex(object->sha1));
+ oid_to_hex(&object->oid));
object->flags &= ~CLIENT_SHALLOW;
/* make sure the real parents are parsed */
- unregister_shallow(object->sha1);
+ unregister_shallow(object->oid.hash);
object->parsed = 0;
- if (parse_commit((struct commit *)object))
- die("invalid commit");
+ parse_commit_or_die((struct commit *)object);
parents = ((struct commit *)object)->parents;
while (parents) {
add_object_array(&parents->item->object,
add_object_array(object, NULL, &extra_edge_obj);
}
/* make sure commit traversal conforms to client */
- register_shallow(object->sha1);
+ 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->sha1);
+ register_shallow(shallows.objects[i].item->oid.hash);
}
shallow_nr += shallows.nr;
}
/* return non-zero if the ref is hidden, otherwise 0 */
-static int mark_our_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int mark_our_ref(const char *refname, const char *refname_full,
+ const struct object_id *oid)
{
- struct object *o = lookup_unknown_object(sha1);
+ struct object *o = lookup_unknown_object(oid->hash);
- if (ref_is_hidden(refname)) {
+ if (ref_is_hidden(refname, refname_full)) {
o->flags |= HIDDEN_REF;
return 1;
}
- if (!o)
- die("git upload-pack: cannot find object %s:", sha1_to_hex(sha1));
o->flags |= OUR_REF;
return 0;
}
-static int send_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int check_ref(const char *refname_full, const struct object_id *oid,
+ int flag, void *cb_data)
+{
+ const char *refname = strip_namespace(refname_full);
+
+ mark_our_ref(refname, refname_full, oid);
+ return 0;
+}
+
+static void format_symref_info(struct strbuf *buf, struct string_list *symref)
+{
+ struct string_list_item *item;
+
+ if (!symref->nr)
+ return;
+ for_each_string_list_item(item, symref)
+ strbuf_addf(buf, " symref=%s:%s", item->string, (char *)item->util);
+}
+
+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";
const char *refname_nons = strip_namespace(refname);
- unsigned char peeled[20];
+ struct object_id peeled;
- if (mark_our_ref(refname, sha1, flag, cb_data))
+ if (mark_our_ref(refname_nons, refname, oid))
return 0;
- if (capabilities)
- packet_write(1, "%s %s%c%s%s%s agent=%s\n",
- sha1_to_hex(sha1), refname_nons,
+ if (capabilities) {
+ 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",
+ oid_to_hex(oid), refname_nons,
0, capabilities,
- allow_tip_sha1_in_want ? " allow-tip-sha1-in-want" : "",
+ (allow_unadvertised_object_request & ALLOW_TIP_SHA1) ?
+ " allow-tip-sha1-in-want" : "",
+ (allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1) ?
+ " allow-reachable-sha1-in-want" : "",
stateless_rpc ? " no-done" : "",
+ symref_info.buf,
git_user_agent_sanitized());
- else
- packet_write(1, "%s %s\n", sha1_to_hex(sha1), refname_nons);
+ strbuf_release(&symref_info);
+ } else {
+ packet_write(1, "%s %s\n", oid_to_hex(oid), refname_nons);
+ }
capabilities = NULL;
- if (!peel_ref(refname, peeled))
- packet_write(1, "%s %s^{}\n", sha1_to_hex(peeled), refname_nons);
+ if (!peel_ref(refname, peeled.hash))
+ packet_write(1, "%s %s^{}\n", oid_to_hex(&peeled), refname_nons);
+ return 0;
+}
+
+static int find_symref(const char *refname, const struct object_id *oid,
+ int flag, void *cb_data)
+{
+ 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);
+ if (!symref_target || (flag & REF_ISSYMREF) == 0)
+ die("'%s' is a symref but it is not?", refname);
+ item = string_list_append(cb_data, refname);
+ item->util = xstrdup(symref_target);
return 0;
}
static void upload_pack(void)
{
+ struct string_list symref = STRING_LIST_INIT_DUP;
+
+ head_ref_namespaced(find_symref, &symref);
+
if (advertise_refs || !stateless_rpc) {
reset_timeout();
- head_ref_namespaced(send_ref, NULL);
- for_each_namespaced_ref(send_ref, NULL);
+ head_ref_namespaced(send_ref, &symref);
+ for_each_namespaced_ref(send_ref, &symref);
+ advertise_shallow_grafts(1);
packet_flush(1);
} else {
- head_ref_namespaced(mark_our_ref, NULL);
- for_each_namespaced_ref(mark_our_ref, NULL);
+ head_ref_namespaced(check_ref, NULL);
+ for_each_namespaced_ref(check_ref, NULL);
}
+ string_list_clear(&symref, 1);
if (advertise_refs)
return;
static int upload_pack_config(const char *var, const char *value, void *unused)
{
- if (!strcmp("uploadpack.allowtipsha1inwant", var))
- allow_tip_sha1_in_want = git_config_bool(var, value);
- else if (!strcmp("uploadpack.keepalive", var)) {
+ 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;
packet_trace_identity("upload-pack");
git_extract_argv0_path(argv[0]);
- read_replace_refs = 0;
+ check_replace_refs = 0;
for (i = 1; i < argc; i++) {
char *arg = argv[i];
strict = 1;
continue;
}
- if (!prefixcmp(arg, "--timeout=")) {
+ if (starts_with(arg, "--timeout=")) {
timeout = atoi(arg+10);
daemon_mode = 1;
continue;
if (!enter_repo(dir, strict))
die("'%s' does not appear to be a git repository", dir);
- if (is_repository_shallow())
- die("attempt to fetch/clone from a shallow repository");
+
git_config(upload_pack_config, NULL);
upload_pack();
return 0;