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socket: Use the users shell for running proxy command

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Fixes T200 and tests on ubuntu, which is using dash

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Jakub Jelen
2019-12-19 18:56:43 +01:00
committed by Andreas Schneider
parent 3a6751f3d2
commit e5553a92d9
1 changed files with 14 additions and 2 deletions
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16
src/socket.c
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@@ -869,14 +869,26 @@ int ssh_socket_connect(ssh_socket s,
void
ssh_execute_command(const char *command, socket_t in, socket_t out)
{
const char *args[] = {"/bin/sh", "-c", command, NULL};
const char *shell = NULL;
const char *args[] = {NULL/*shell*/, "-c", command, NULL};
int devnull;
/* Prepare /dev/null socket for the stderr redirection */
int devnull = open("/dev/null", O_WRONLY);
devnull = open("/dev/null", O_WRONLY);
if (devnull == -1) {
SSH_LOG(SSH_LOG_WARNING, "Failed to open /dev/null");
exit(1);
}
/* By default, use the current users shell */
shell = getenv("SHELL");
if (shell == NULL || shell[0] == '\0') {
/* Fall back to bash. There are issues with dash or
* whatever people tend to link to /bin/sh */
shell = "/bin/bash";
}
args[0] = shell;
/* redirect in and out to stdin, stdout */
dup2(in, 0);
dup2(out, 1);