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connect: refactor git_connect to only get the protocol version once

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Instead of having each builtin transport asking for which protocol
version the user has configured in 'protocol.version' by calling
`get_protocol_version_config()` multiple times, factor this logic out
so there is just a single call at the beginning of `git_connect()`.

This will be helpful in the next patch where we can have centralized
logic which determines if we need to request a different protocol
version than what the user has configured.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Brandon Williams 2018-03-15 10:31:30 -07:00 committed by Junio C Hamano
parent f7e2050105
commit 40fc51e39f
1 changed files with 15 additions and 12 deletions
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27
connect.c
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@ -1035,6 +1035,7 @@ static enum ssh_variant determine_ssh_variant(const char *ssh_command,
*/
static struct child_process *git_connect_git(int fd[2], char *hostandport,
const char *path, const char *prog,
enum protocol_version version,
int flags)
{
struct child_process *conn;
@ -1073,10 +1074,10 @@ static struct child_process *git_connect_git(int fd[2], char *hostandport,
target_host, 0);
/* If using a new version put that stuff here after a second null byte */
if (get_protocol_version_config() > 0) {
if (version > 0) {
strbuf_addch(&request, '\0');
strbuf_addf(&request, "version=%d%c",
get_protocol_version_config(), '\0');
version, '\0');
}
packet_write(fd[1], request.buf, request.len);
@ -1092,14 +1093,14 @@ static struct child_process *git_connect_git(int fd[2], char *hostandport,
*/
static void push_ssh_options(struct argv_array *args, struct argv_array *env,
enum ssh_variant variant, const char *port,
int flags)
enum protocol_version version, int flags)
{
if (variant == VARIANT_SSH &&
get_protocol_version_config() > 0) {
version > 0) {
argv_array_push(args, "-o");
argv_array_push(args, "SendEnv=" GIT_PROTOCOL_ENVIRONMENT);
argv_array_pushf(env, GIT_PROTOCOL_ENVIRONMENT "=version=%d",
get_protocol_version_config());
version);
}
if (flags & CONNECT_IPV4) {
@ -1152,7 +1153,8 @@ static void push_ssh_options(struct argv_array *args, struct argv_array *env,
/* Prepare a child_process for use by Git's SSH-tunneled transport. */
static void fill_ssh_args(struct child_process *conn, const char *ssh_host,
const char *port, int flags)
const char *port, enum protocol_version version,
int flags)
{
const char *ssh;
enum ssh_variant variant;
@ -1186,14 +1188,14 @@ static void fill_ssh_args(struct child_process *conn, const char *ssh_host,
argv_array_push(&detect.args, ssh);
argv_array_push(&detect.args, "-G");
push_ssh_options(&detect.args, &detect.env_array,
VARIANT_SSH, port, flags);
VARIANT_SSH, port, version, flags);
argv_array_push(&detect.args, ssh_host);
variant = run_command(&detect) ? VARIANT_SIMPLE : VARIANT_SSH;
}
argv_array_push(&conn->args, ssh);
push_ssh_options(&conn->args, &conn->env_array, variant, port, flags);
push_ssh_options(&conn->args, &conn->env_array, variant, port, version, flags);
argv_array_push(&conn->args, ssh_host);
}
@ -1214,6 +1216,7 @@ struct child_process *git_connect(int fd[2], const char *url,
char *hostandport, *path;
struct child_process *conn;
enum protocol protocol;
enum protocol_version version = get_protocol_version_config();
/* Without this we cannot rely on waitpid() to tell
* what happened to our children.
@ -1228,7 +1231,7 @@ struct child_process *git_connect(int fd[2], const char *url,
printf("Diag: path=%s\n", path ? path : "NULL");
conn = NULL;
} else if (protocol == PROTO_GIT) {
conn = git_connect_git(fd, hostandport, path, prog, flags);
conn = git_connect_git(fd, hostandport, path, prog, version, flags);
} else {
struct strbuf cmd = STRBUF_INIT;
const char *const *var;
@ -1271,12 +1274,12 @@ struct child_process *git_connect(int fd[2], const char *url,
strbuf_release(&cmd);
return NULL;
}
fill_ssh_args(conn, ssh_host, port, flags);
fill_ssh_args(conn, ssh_host, port, version, flags);
} else {
transport_check_allowed("file");
if (get_protocol_version_config() > 0) {
if (version > 0) {
argv_array_pushf(&conn->env_array, GIT_PROTOCOL_ENVIRONMENT "=version=%d",
get_protocol_version_config());
version);
}
}
argv_array_push(&conn->args, cmd.buf);