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connect: split ssh command line options into separate function

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The git_connect function is growing long.  Split the portion that
discovers an ssh command and options it accepts before the service
name and path to a separate function to make it easier to read.

No functional change intended.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jonathan Nieder 2017-11-20 14:19:43 -08:00 committed by Junio C Hamano
parent 2ac67cb63b
commit fce54ce422
1 changed files with 60 additions and 53 deletions
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113
connect.c
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@ -919,6 +919,65 @@ static struct child_process *git_connect_git(int fd[2], char *hostandport,
return conn;
}
/* 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 *ssh;
enum ssh_variant variant;
if (looks_like_command_line_option(ssh_host))
die("strange hostname '%s' blocked", ssh_host);
ssh = get_ssh_command();
if (ssh) {
variant = determine_ssh_variant(ssh, 1);
} else {
/*
* GIT_SSH is the no-shell version of
* GIT_SSH_COMMAND (and must remain so for
* historical compatibility).
*/
conn->use_shell = 0;
ssh = getenv("GIT_SSH");
if (!ssh)
ssh = "ssh";
variant = determine_ssh_variant(ssh, 0);
}
argv_array_push(&conn->args, ssh);
if (variant == VARIANT_SSH &&
get_protocol_version_config() > 0) {
argv_array_push(&conn->args, "-o");
argv_array_push(&conn->args, "SendEnv=" GIT_PROTOCOL_ENVIRONMENT);
argv_array_pushf(&conn->env_array, GIT_PROTOCOL_ENVIRONMENT "=version=%d",
get_protocol_version_config());
}
if (variant != VARIANT_SIMPLE) {
if (flags & CONNECT_IPV4)
argv_array_push(&conn->args, "-4");
else if (flags & CONNECT_IPV6)
argv_array_push(&conn->args, "-6");
}
if (variant == VARIANT_TORTOISEPLINK)
argv_array_push(&conn->args, "-batch");
if (port && variant != VARIANT_SIMPLE) {
if (variant == VARIANT_SSH)
argv_array_push(&conn->args, "-p");
else
argv_array_push(&conn->args, "-P");
argv_array_push(&conn->args, port);
}
argv_array_push(&conn->args, ssh_host);
}
/*
* This returns the dummy child_process `no_fork` if the transport protocol
* does not need fork(2), or a struct child_process object if it does. Once
@ -972,8 +1031,6 @@ struct child_process *git_connect(int fd[2], const char *url,
conn->use_shell = 1;
conn->in = conn->out = -1;
if (protocol == PROTO_SSH) {
const char *ssh;
enum ssh_variant variant;
char *ssh_host = hostandport;
const char *port = NULL;
transport_check_allowed("ssh");
@ -995,57 +1052,7 @@ struct child_process *git_connect(int fd[2], const char *url,
strbuf_release(&cmd);
return NULL;
}
if (looks_like_command_line_option(ssh_host))
die("strange hostname '%s' blocked", ssh_host);
ssh = get_ssh_command();
if (ssh) {
variant = determine_ssh_variant(ssh, 1);
} else {
/*
* GIT_SSH is the no-shell version of
* GIT_SSH_COMMAND (and must remain so for
* historical compatibility).
*/
conn->use_shell = 0;
ssh = getenv("GIT_SSH");
if (!ssh)
ssh = "ssh";
variant = determine_ssh_variant(ssh, 0);
}
argv_array_push(&conn->args, ssh);
if (variant == VARIANT_SSH &&
get_protocol_version_config() > 0) {
argv_array_push(&conn->args, "-o");
argv_array_push(&conn->args, "SendEnv=" GIT_PROTOCOL_ENVIRONMENT);
argv_array_pushf(&conn->env_array, GIT_PROTOCOL_ENVIRONMENT "=version=%d",
get_protocol_version_config());
}
if (variant != VARIANT_SIMPLE) {
if (flags & CONNECT_IPV4)
argv_array_push(&conn->args, "-4");
else if (flags & CONNECT_IPV6)
argv_array_push(&conn->args, "-6");
}
if (variant == VARIANT_TORTOISEPLINK)
argv_array_push(&conn->args, "-batch");
if (port && variant != VARIANT_SIMPLE) {
if (variant == VARIANT_SSH)
argv_array_push(&conn->args, "-p");
else
argv_array_push(&conn->args, "-P");
argv_array_push(&conn->args, port);
}
argv_array_push(&conn->args, ssh_host);
fill_ssh_args(conn, ssh_host, port, flags);
} else {
transport_check_allowed("file");
if (get_protocol_version_config() > 0) {