This adds a new archive command for protocol v2. The command expects
arguments in the form "argument X" which are passed unmodified to
git-upload-archive--writer.
This command works over the file://, Git, and SSH transports. HTTP
support will be added in a separate patch.
Signed-off-by: Josh Steadmon <stead...@google.com>
---
builtin/archive.c | 45 +++++++++++++++++++++++++++-------------
builtin/upload-archive.c | 44 ++++++++++++++++++++++++++++++++++++---
t/t5000-tar-tree.sh | 5 +++++
3 files changed, 77 insertions(+), 17 deletions(-)
diff --git a/builtin/archive.c b/builtin/archive.c
index e54fc39ad..73831887d 100644
--- a/builtin/archive.c
+++ b/builtin/archive.c
@@ -5,9 +5,11 @@
#include "cache.h"
#include "builtin.h"
#include "archive.h"
+#include "connect.h"
#include "transport.h"
#include "parse-options.h"
#include "pkt-line.h"
+#include "protocol.h"
#include "sideband.h"
static void create_output_file(const char *output_file)
@@ -23,6 +25,13 @@ static void create_output_file(const char *output_file)
}
}
+static int do_v2_command_and_cap(int out)
+{
+ packet_write_fmt(out, "command=archive\n");
+ /* Capability list would go here, if we had any. */
+ packet_delim(out);
+}
+
static int run_remote_archiver(int argc, const char **argv,
const char *remote, const char *exec,
const char *name_hint)
@@ -32,6 +41,7 @@ static int run_remote_archiver(int argc, const char **argv,
struct remote *_remote;
struct packet_reader reader;
enum packet_read_status status;
+ enum protocol_version version;
_remote = remote_get(remote);
if (!_remote->url[0])
@@ -41,6 +51,11 @@ static int run_remote_archiver(int argc, const char **argv,
packet_reader_init(&reader, fd[0], NULL, 0, PACKET_READ_CHOMP_NEWLINE);
+ version = discover_version(&reader);
+
+ if (version == protocol_v2)
+ do_v2_command_and_cap(fd[1]);
+
/*
* Inject a fake --format field at the beginning of the
* arguments, with the format inferred from our output
@@ -56,22 +71,24 @@ static int run_remote_archiver(int argc, const char **argv,
packet_write_fmt(fd[1], "argument %s\n", argv[i]);
packet_flush(fd[1]);
- status = packet_reader_read(&reader);
-
- if (status == PACKET_READ_FLUSH)
- die(_("git archive: expected ACK/NAK, got a flush packet"));
- if (strcmp(reader.buffer, "ACK")) {
- if (starts_with(reader.buffer, "NACK "))
- die(_("git archive: NACK %s"), reader.buffer + 5);
- if (starts_with(reader.buffer, "ERR "))
- die(_("remote error: %s"), reader.buffer + 4);
- die(_("git archive: protocol error"));
+ if (version == protocol_v0) {
+ status = packet_reader_read(&reader);
+
+ if (status == PACKET_READ_FLUSH)
+ die(_("git archive: expected ACK/NAK, got a flush
packet"));
+ if (strcmp(reader.buffer, "ACK")) {
+ if (starts_with(reader.buffer, "NACK "))
+ die(_("git archive: NACK %s"), reader.buffer +
5);
+ if (starts_with(reader.buffer, "ERR "))
+ die(_("remote error: %s"), reader.buffer + 4);
+ die(_("git archive: protocol error"));
+ }
+
+ status = packet_reader_read(&reader);
+ if (status != PACKET_READ_FLUSH)
+ die(_("git archive: expected a flush"));
}
- status = packet_reader_read(&reader);
- if (status != PACKET_READ_FLUSH)
- die(_("git archive: expected a flush"));
-
/* Now, start reading from fd[0] and spit it out to stdout */
rv = recv_sideband("archive", fd[0], 1);
rv |= transport_disconnect(transport);
diff --git a/builtin/upload-archive.c b/builtin/upload-archive.c
index 25d911635..534e8fd56 100644
--- a/builtin/upload-archive.c
+++ b/builtin/upload-archive.c
@@ -5,6 +5,7 @@
#include "builtin.h"
#include "archive.h"
#include "pkt-line.h"
+#include "protocol.h"
#include "sideband.h"
#include "run-command.h"
#include "argv-array.h"
@@ -73,13 +74,53 @@ static ssize_t process_input(int child_fd, int band)
return sz;
}
+static int handle_v2_command_and_cap(void)
+{
+ struct packet_reader reader;
+ enum packet_read_status status;
+
+ packet_reader_init(&reader, 0, NULL, 0, PACKET_READ_CHOMP_NEWLINE);
+
+ packet_write_fmt(1, "version 2\n");
+ /*
+ * We don't currently send any capabilities, but maybe we could list
+ * supported archival formats?
+ */
+ packet_flush(1);
+
+ status = packet_reader_read(&reader);
+ if (status != PACKET_READ_NORMAL ||
+ strcmp(reader.buffer, "command=archive"))
+ die(_("upload-archive: expected command=archive"));
+ while (status == PACKET_READ_NORMAL) {
+ /* We don't currently expect any client capabilities, but we
+ * should still read (and ignore) any that happen to get sent.
+ */
+ status = packet_reader_read(&reader);
+ }
+ if (status != PACKET_READ_DELIM)
+ die(_("upload-archive: expected delim packet"));
+
+ /* Let git-upload-archive--writer handle the arguments. */
+
+ return 0;
+}
+
int cmd_upload_archive(int argc, const char **argv, const char *prefix)
{
struct child_process writer = { argv };
+ enum protocol_version version = determine_protocol_version_server();
if (argc == 2 && !strcmp(argv[1], "-h"))
usage(upload_archive_usage);
+ if (version == protocol_v2)
+ handle_v2_command_and_cap();
+ else {
+ packet_write_fmt(1, "ACK\n");
+ packet_flush(1);
+ }
+
/*
* Set up sideband subprocess.
*
@@ -96,9 +137,6 @@ int cmd_upload_archive(int argc, const char **argv, const
char *prefix)
die("upload-archive: %s", strerror(err));
}
- packet_write_fmt(1, "ACK\n");
- packet_flush(1);
-
while (1) {
struct pollfd pfd[2];
diff --git a/t/t5000-tar-tree.sh b/t/t5000-tar-tree.sh
index 2a97b27b0..4be74d6e9 100755
--- a/t/t5000-tar-tree.sh
+++ b/t/t5000-tar-tree.sh
@@ -145,6 +145,11 @@ test_expect_success \
check_tar b
+test_expect_success 'protocol v2 for remote' '
+ GIT_PROTOCOL="version=2" git archive --remote=. HEAD >v2_remote.tar
+'
+check_tar v2_remote
+
test_expect_success 'git archive --prefix=prefix/' '
git archive --prefix=prefix/ HEAD >with_prefix.tar
'
--
2.19.0.397.gdd90340f6a-goog
