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connect: split ssh option computation to its own function 

This puts the determination of options to pass to each ssh variant
(see ssh.variant in git-config(1)) in one place.

A follow-up patch will use this in an initial dry run to detect which
variant to use when the ssh command is ambiguous.

No functional change intended yet.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jonathan Nieder 2017-11-20 13:26:19 -08:00 committed by Junio C Hamano
parent fce54ce422
commit 957e2ad282
1 changed files with 37 additions and 28 deletions
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65
connect.c
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@ -919,6 +919,42 @@ static struct child_process *git_connect_git(int fd[2], char *hostandport,
return conn;
}
/*
* Append the appropriate environment variables to `env` and options to
* `args` for running ssh in Git's SSH-tunneled transport.
*/
static void push_ssh_options(struct argv_array *args, struct argv_array *env,
enum ssh_variant variant, const char *port,
int flags)
{
if (variant == VARIANT_SSH &&
get_protocol_version_config() > 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());
}
if (variant != VARIANT_SIMPLE) {
if (flags & CONNECT_IPV4)
argv_array_push(args, "-4");
else if (flags & CONNECT_IPV6)
argv_array_push(args, "-6");
}
if (variant == VARIANT_TORTOISEPLINK)
argv_array_push(args, "-batch");
if (port && variant != VARIANT_SIMPLE) {
if (variant == VARIANT_SSH)
argv_array_push(args, "-p");
else
argv_array_push(args, "-P");
argv_array_push(args, port);
}
}
/* 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)
@ -947,34 +983,7 @@ static void fill_ssh_args(struct child_process *conn, const char *ssh_host,
}
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);
}
push_ssh_options(&conn->args, &conn->env_array, variant, port, flags);
argv_array_push(&conn->args, ssh_host);
}