connect: Add the envvar GIT_SSH_VARIANT and ssh.variant config

This environment variable and configuration value allow to
override the autodetection of plink/tortoiseplink in case that
Git gets it wrong.

[jes: wrapped overly-long lines, factored out and changed
get_ssh_variant() to handle_ssh_variant() to accomodate the
change from the putty/tortoiseplink variables to
port_option/needs_batch, adjusted the documentation, free()d
value obtained from the config.]

Signed-off-by: Segev Finer <segev208@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Segev Finer 2017-02-01 13:01:16 +01:00 committed by Junio C Hamano
parent e2824e47e7
commit dd33e07766
4 changed files with 51 additions and 3 deletions

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@ -1949,6 +1949,17 @@ Environment variable settings always override any matches. The URLs that are
matched against are those given directly to Git commands. This means any URLs
visited as a result of a redirection do not participate in matching.
ssh.variant::
Depending on the value of the environment variables `GIT_SSH` or
`GIT_SSH_COMMAND`, or the config setting `core.sshCommand`, Git
auto-detects whether to adjust its command-line parameters for use
with plink or tortoiseplink, as opposed to the default (OpenSSH).
+
The config variable `ssh.variant` can be set to override this auto-detection;
valid values are `ssh`, `plink`, `putty` or `tortoiseplink`. Any other value
will be treated as normal ssh. This setting can be overridden via the
environment variable `GIT_SSH_VARIANT`.
i18n.commitEncoding::
Character encoding the commit messages are stored in; Git itself
does not care per se, but this information is necessary e.g. when

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@ -1020,6 +1020,12 @@ Usually it is easier to configure any desired options through your
personal `.ssh/config` file. Please consult your ssh documentation
for further details.
`GIT_SSH_VARIANT`::
If this environment variable is set, it overrides Git's autodetection
whether `GIT_SSH`/`GIT_SSH_COMMAND`/`core.sshCommand` refer to OpenSSH,
plink or tortoiseplink. This variable overrides the config setting
`ssh.variant` that serves the same purpose.
`GIT_ASKPASS`::
If this environment variable is set, then Git commands which need to
acquire passwords or passphrases (e.g. for HTTP or IMAP authentication)

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@ -694,10 +694,14 @@ static const char *get_ssh_command(void)
static int handle_ssh_variant(const char *ssh_command, int is_cmdline,
int *port_option, int *needs_batch)
{
const char *variant;
const char *variant = getenv("GIT_SSH_VARIANT");
char *p = NULL;
if (!is_cmdline) {
if (variant)
; /* okay, fall through */
else if (!git_config_get_string("ssh.variant", &p))
variant = p;
else if (!is_cmdline) {
p = xstrdup(ssh_command);
variant = basename(p);
} else {
@ -717,7 +721,8 @@ static int handle_ssh_variant(const char *ssh_command, int is_cmdline,
}
if (!strcasecmp(variant, "plink") ||
!strcasecmp(variant, "plink.exe"))
!strcasecmp(variant, "plink.exe") ||
!strcasecmp(variant, "putty"))
*port_option = 'P';
else if (!strcasecmp(variant, "tortoiseplink") ||
!strcasecmp(variant, "tortoiseplink.exe")) {

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@ -401,6 +401,32 @@ test_expect_success 'single quoted plink.exe in GIT_SSH_COMMAND' '
expect_ssh "-v -P 123" myhost src
'
test_expect_success 'GIT_SSH_VARIANT overrides plink detection' '
copy_ssh_wrapper_as "$TRASH_DIRECTORY/plink" &&
GIT_SSH_VARIANT=ssh \
git clone "[myhost:123]:src" ssh-bracket-clone-variant-1 &&
expect_ssh "-p 123" myhost src
'
test_expect_success 'ssh.variant overrides plink detection' '
copy_ssh_wrapper_as "$TRASH_DIRECTORY/plink" &&
git -c ssh.variant=ssh \
clone "[myhost:123]:src" ssh-bracket-clone-variant-2 &&
expect_ssh "-p 123" myhost src
'
test_expect_success 'GIT_SSH_VARIANT overrides plink detection to plink' '
GIT_SSH_VARIANT=plink \
git clone "[myhost:123]:src" ssh-bracket-clone-variant-3 &&
expect_ssh "-P 123" myhost src
'
test_expect_success 'GIT_SSH_VARIANT overrides plink to tortoiseplink' '
GIT_SSH_VARIANT=tortoiseplink \
git clone "[myhost:123]:src" ssh-bracket-clone-variant-4 &&
expect_ssh "-batch -P 123" myhost src
'
# Reset the GIT_SSH environment variable for clone tests.
setup_ssh_wrapper