openssh/openssh-7.7p1-hostname_changes_when_forwarding_X.patch

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# HG changeset patch
# Parent 5e19a205fa03584bb0d829ecbba7495ce1899b65
# -- uset do be called '-xauthlocalhostname'
handle hostname changes when forwarding X
Index: openssh-8.8p1/session.c
===================================================================
--- openssh-8.8p1.orig/session.c
+++ openssh-8.8p1/session.c
@@ -981,7 +981,7 @@ copy_environment(char **source, char ***
#endif
static char **
-do_setup_env(struct ssh *ssh, Session *s, const char *shell)
+do_setup_env(struct ssh *ssh, Session *s, const char *shell, int *env_size)
{
char buf[256];
size_t n;
@@ -1191,6 +1191,8 @@ do_setup_env(struct ssh *ssh, Session *s
for (i = 0; env[i]; i++)
fprintf(stderr, " %.200s\n", env[i]);
}
+
+ *env_size = envsize;
return env;
}
@@ -1199,7 +1201,7 @@ do_setup_env(struct ssh *ssh, Session *s
* first in this order).
*/
static void
-do_rc_files(struct ssh *ssh, Session *s, const char *shell)
+do_rc_files(struct ssh *ssh, Session *s, const char *shell, char **env, int *env_size)
{
FILE *f = NULL;
char *cmd = NULL, *user_rc = NULL;
@@ -1256,12 +1258,20 @@ do_rc_files(struct ssh *ssh, Session *s,
fatal_f("xasprintf: %s", strerror(errno));
f = popen(cmd, "w");
if (f) {
+ char hostname[MAXHOSTNAMELEN];
+
fprintf(f, "remove %s\n",
s->auth_display);
fprintf(f, "add %s %s %s\n",
s->auth_display, s->auth_proto,
s->auth_data);
pclose(f);
+ if (gethostname(hostname,sizeof(hostname)) >= 0)
+ child_set_env(&env,env_size,"XAUTHLOCALHOSTNAME",
+ hostname);
+ else
+ debug("Cannot set up XAUTHLOCALHOSTNAME %s\n",
+ strerror(errno));
} else {
fprintf(stderr, "Could not run %s\n",
cmd);
@@ -1518,6 +1528,7 @@ do_child(struct ssh *ssh, Session *s, co
char **env, *argv[ARGV_MAX], remote_id[512];
const char *shell, *shell0;
struct passwd *pw = s->pw;
+ int env_size;
int r = 0;
sshpkt_fmt_connection_id(ssh, remote_id, sizeof(remote_id));
@@ -1574,7 +1585,7 @@ do_child(struct ssh *ssh, Session *s, co
* Make sure $SHELL points to the shell from the password file,
* even if shell is overridden from login.conf
*/
- env = do_setup_env(ssh, s, shell);
+ env = do_setup_env(ssh, s, shell, &env_size);
#ifdef HAVE_LOGIN_CAP
shell = login_getcapstr(lc, "shell", (char *)shell, (char *)shell);
@@ -1638,7 +1649,7 @@ do_child(struct ssh *ssh, Session *s, co
closefrom(STDERR_FILENO + 1);
- do_rc_files(ssh, s, shell);
+ do_rc_files(ssh, s, shell, env, &env_size);
/* restore SIGPIPE for child */
ssh_signal(SIGPIPE, SIG_DFL);