git

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#include "builtin.h"
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#include "gettext.h"
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#include "hex.h"
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#include "object-file.h"
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#include "pkt-line.h"
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#include "fetch-pack.h"
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#include "remote.h"
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#include "connect.h"
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#include "oid-array.h"
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#include "protocol.h"
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static const char fetch_pack_usage[] =
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"git fetch-pack [--all] [--stdin] [--quiet | -q] [--keep | -k] [--thin] "
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"[--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] "
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"[--no-progress] [--diag-url] [-v] [<host>:]<directory> [<refs>...]";
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static void add_sought_entry(struct ref ***sought, int *nr, int *alloc,
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			     const char *name)
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{
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	struct ref *ref;
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	struct object_id oid;
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	const char *p;
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	if (!parse_oid_hex(name, &oid, &p)) {
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		if (*p == ' ') {
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			/* <oid> <ref>, find refname */
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			name = p + 1;
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		} else if (*p == '\0') {
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			; /* <oid>, leave oid as name */
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		} else {
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			/* <ref>, clear cruft from oid */
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			oidclr(&oid, the_repository->hash_algo);
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		}
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	} else {
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		/* <ref>, clear cruft from get_oid_hex */
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		oidclr(&oid, the_repository->hash_algo);
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	}
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	ref = alloc_ref(name);
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	oidcpy(&ref->old_oid, &oid);
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	(*nr)++;
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	ALLOC_GROW(*sought, *nr, *alloc);
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	(*sought)[*nr - 1] = ref;
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}
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int cmd_fetch_pack(int argc, const char **argv, const char *prefix UNUSED)
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{
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	int i, ret;
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	struct ref *ref = NULL;
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	const char *dest = NULL;
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	struct ref **sought = NULL;
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	int nr_sought = 0, alloc_sought = 0;
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	int fd[2];
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	struct string_list pack_lockfiles = STRING_LIST_INIT_DUP;
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	struct string_list *pack_lockfiles_ptr = NULL;
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	struct child_process *conn;
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	struct fetch_pack_args args;
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	struct oid_array shallow = OID_ARRAY_INIT;
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	struct string_list deepen_not = STRING_LIST_INIT_DUP;
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	struct packet_reader reader;
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	enum protocol_version version;
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	fetch_if_missing = 0;
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	packet_trace_identity("fetch-pack");
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	memset(&args, 0, sizeof(args));
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	list_objects_filter_init(&args.filter_options);
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	args.uploadpack = "git-upload-pack";
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	for (i = 1; i < argc && *argv[i] == '-'; i++) {
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		const char *arg = argv[i];
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		if (skip_prefix(arg, "--upload-pack=", &arg)) {
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			args.uploadpack = arg;
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			continue;
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		}
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		if (skip_prefix(arg, "--exec=", &arg)) {
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			args.uploadpack = arg;
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			continue;
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		}
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		if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
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			args.quiet = 1;
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			continue;
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		}
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		if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
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			args.lock_pack = args.keep_pack;
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			args.keep_pack = 1;
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			continue;
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		}
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		if (!strcmp("--thin", arg)) {
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			args.use_thin_pack = 1;
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			continue;
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		}
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		if (!strcmp("--include-tag", arg)) {
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			args.include_tag = 1;
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			continue;
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		}
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		if (!strcmp("--all", arg)) {
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			args.fetch_all = 1;
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			continue;
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		}
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		if (!strcmp("--stdin", arg)) {
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			args.stdin_refs = 1;
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			continue;
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		}
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		if (!strcmp("--diag-url", arg)) {
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			args.diag_url = 1;
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			continue;
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		}
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		if (!strcmp("-v", arg)) {
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			args.verbose = 1;
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			continue;
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		}
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		if (skip_prefix(arg, "--depth=", &arg)) {
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			args.depth = strtol(arg, NULL, 0);
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			continue;
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		}
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		if (skip_prefix(arg, "--shallow-since=", &arg)) {
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			args.deepen_since = xstrdup(arg);
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			continue;
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		}
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		if (skip_prefix(arg, "--shallow-exclude=", &arg)) {
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			string_list_append(&deepen_not, arg);
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			continue;
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		}
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		if (!strcmp(arg, "--deepen-relative")) {
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			args.deepen_relative = 1;
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			continue;
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		}
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		if (!strcmp("--no-progress", arg)) {
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			args.no_progress = 1;
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			continue;
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		}
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		if (!strcmp("--stateless-rpc", arg)) {
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			args.stateless_rpc = 1;
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			continue;
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		}
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		if (!strcmp("--lock-pack", arg)) {
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			args.lock_pack = 1;
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			pack_lockfiles_ptr = &pack_lockfiles;
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			continue;
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		}
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		if (!strcmp("--check-self-contained-and-connected", arg)) {
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			args.check_self_contained_and_connected = 1;
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			continue;
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		}
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		if (!strcmp("--cloning", arg)) {
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			args.cloning = 1;
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			continue;
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		}
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		if (!strcmp("--update-shallow", arg)) {
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			args.update_shallow = 1;
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			continue;
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		}
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		if (!strcmp("--from-promisor", arg)) {
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			args.from_promisor = 1;
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			continue;
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		}
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		if (!strcmp("--refetch", arg)) {
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			args.refetch = 1;
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			continue;
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		}
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		if (skip_prefix(arg, ("--filter="), &arg)) {
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			parse_list_objects_filter(&args.filter_options, arg);
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			continue;
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		}
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		if (!strcmp(arg, ("--no-filter"))) {
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			list_objects_filter_set_no_filter(&args.filter_options);
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			continue;
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		}
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		usage(fetch_pack_usage);
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	}
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	if (deepen_not.nr)
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		args.deepen_not = &deepen_not;
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	if (i < argc)
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		dest = argv[i++];
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	else
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		usage(fetch_pack_usage);
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	/*
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	 * Copy refs from cmdline to growable list, then append any
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	 * refs from the standard input:
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	 */
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	for (; i < argc; i++)
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		add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
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	if (args.stdin_refs) {
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		if (args.stateless_rpc) {
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			/* in stateless RPC mode we use pkt-line to read
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			 * from stdin, until we get a flush packet
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			 */
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			for (;;) {
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				char *line = packet_read_line(0, NULL);
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				if (!line)
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					break;
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				add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
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			}
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		}
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		else {
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			/* read from stdin one ref per line, until EOF */
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			struct strbuf line = STRBUF_INIT;
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			while (strbuf_getline_lf(&line, stdin) != EOF)
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				add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
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			strbuf_release(&line);
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		}
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	}
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	if (args.stateless_rpc) {
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		conn = NULL;
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		fd[0] = 0;
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		fd[1] = 1;
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	} else {
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		int flags = args.verbose ? CONNECT_VERBOSE : 0;
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		if (args.diag_url)
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			flags |= CONNECT_DIAG_URL;
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		conn = git_connect(fd, dest, "git-upload-pack",
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				   args.uploadpack, flags);
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		if (!conn)
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			return args.diag_url ? 0 : 1;
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	}
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	packet_reader_init(&reader, fd[0], NULL, 0,
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			   PACKET_READ_CHOMP_NEWLINE |
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			   PACKET_READ_GENTLE_ON_EOF |
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			   PACKET_READ_DIE_ON_ERR_PACKET);
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	version = discover_version(&reader);
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	switch (version) {
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	case protocol_v2:
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		get_remote_refs(fd[1], &reader, &ref, 0, NULL, NULL,
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				args.stateless_rpc);
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		break;
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	case protocol_v1:
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	case protocol_v0:
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		get_remote_heads(&reader, &ref, 0, NULL, &shallow);
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		break;
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	case protocol_unknown_version:
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		BUG("unknown protocol version");
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	}
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	ref = fetch_pack(&args, fd, ref, sought, nr_sought,
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			 &shallow, pack_lockfiles_ptr, version);
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	if (pack_lockfiles.nr) {
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		int i;
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		printf("lock %s\n", pack_lockfiles.items[0].string);
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		fflush(stdout);
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		for (i = 1; i < pack_lockfiles.nr; i++)
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			warning(_("Lockfile created but not reported: %s"),
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				pack_lockfiles.items[i].string);
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	}
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	if (args.check_self_contained_and_connected &&
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	    args.self_contained_and_connected) {
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		printf("connectivity-ok\n");
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		fflush(stdout);
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	}
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	close(fd[0]);
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	close(fd[1]);
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	if (finish_connect(conn))
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		return 1;
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	ret = !ref;
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	/*
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	 * If the heads to pull were given, we should have consumed
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	 * all of them by matching the remote.  Otherwise, 'git fetch
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	 * remote no-such-ref' would silently succeed without issuing
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	 * an error.
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	 */
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	ret |= report_unmatched_refs(sought, nr_sought);
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	while (ref) {
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		printf("%s %s\n",
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		       oid_to_hex(&ref->old_oid), ref->name);
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		ref = ref->next;
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	}
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	return ret;
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}
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