|
@@ -0,0 +1,74 @@
|
|
|
+From 5cc0127000db5f7567b54d0495fb91a8e452fe09 Mon Sep 17 00:00:00 2001
|
|
|
+From: Konstantin Demin <rockdrilla@gmail.com>
|
|
|
+Date: Fri, 9 May 2025 22:39:35 +0300
|
|
|
+Subject: [PATCH] Fix proxycmd without netcat
|
|
|
+
|
|
|
+fixes e5a0ef27c2 "Execute multihop commands directly, no shell"
|
|
|
+
|
|
|
+Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
|
|
|
+
|
|
|
+Upstream-Status: Backport [https://github.com/mkj/dropbear/commit/5cc0127000db5f7567b54d0495fb91a8e452fe09]
|
|
|
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
|
|
|
+---
|
|
|
+ src/cli-main.c | 12 +++++++++++-
|
|
|
+ 1 file changed, 11 insertions(+), 1 deletion(-)
|
|
|
+
|
|
|
+diff --git a/src/cli-main.c b/src/cli-main.c
|
|
|
+index 2fafa88..0a052a3 100644
|
|
|
+--- a/src/cli-main.c
|
|
|
++++ b/src/cli-main.c
|
|
|
+@@ -77,7 +77,11 @@ int main(int argc, char ** argv) {
|
|
|
+ }
|
|
|
+
|
|
|
+ #if DROPBEAR_CLI_PROXYCMD
|
|
|
+- if (cli_opts.proxycmd || cli_opts.proxyexec) {
|
|
|
++ if (cli_opts.proxycmd
|
|
|
++#if DROPBEAR_CLI_MULTIHOP
|
|
|
++ || cli_opts.proxyexec
|
|
|
++#endif
|
|
|
++ ) {
|
|
|
+ cli_proxy_cmd(&sock_in, &sock_out, &proxy_cmd_pid);
|
|
|
+ if (signal(SIGINT, kill_proxy_sighandler) == SIG_ERR ||
|
|
|
+ signal(SIGTERM, kill_proxy_sighandler) == SIG_ERR ||
|
|
|
+@@ -110,11 +114,13 @@ static void shell_proxy_cmd(const void *user_data_cmd) {
|
|
|
+ dropbear_exit("Failed to run '%s'\n", cmd);
|
|
|
+ }
|
|
|
+
|
|
|
++#if DROPBEAR_CLI_MULTIHOP
|
|
|
+ static void exec_proxy_cmd(const void *unused) {
|
|
|
+ (void)unused;
|
|
|
+ run_command(cli_opts.proxyexec[0], cli_opts.proxyexec, ses.maxfd);
|
|
|
+ dropbear_exit("Failed to run '%s'\n", cli_opts.proxyexec[0]);
|
|
|
+ }
|
|
|
++#endif
|
|
|
+
|
|
|
+ static void cli_proxy_cmd(int *sock_in, int *sock_out, pid_t *pid_out) {
|
|
|
+ char * cmd_arg = NULL;
|
|
|
+@@ -145,9 +151,11 @@ static void cli_proxy_cmd(int *sock_in, int *sock_out, pid_t *pid_out) {
|
|
|
+ cmd_arg = m_malloc(shell_cmdlen);
|
|
|
+ snprintf(cmd_arg, shell_cmdlen, "exec %s", cli_opts.proxycmd);
|
|
|
+ exec_fn = shell_proxy_cmd;
|
|
|
++#if DROPBEAR_CLI_MULTIHOP
|
|
|
+ } else {
|
|
|
+ /* No shell */
|
|
|
+ exec_fn = exec_proxy_cmd;
|
|
|
++#endif
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = spawn_command(exec_fn, cmd_arg, sock_out, sock_in, NULL, pid_out);
|
|
|
+@@ -159,6 +167,7 @@ static void cli_proxy_cmd(int *sock_in, int *sock_out, pid_t *pid_out) {
|
|
|
+ cleanup:
|
|
|
+ m_free(cli_opts.proxycmd);
|
|
|
+ m_free(cmd_arg);
|
|
|
++#if DROPBEAR_CLI_MULTIHOP
|
|
|
+ if (cli_opts.proxyexec) {
|
|
|
+ char **a = NULL;
|
|
|
+ for (a = cli_opts.proxyexec; *a; a++) {
|
|
|
+@@ -166,6 +175,7 @@ cleanup:
|
|
|
+ }
|
|
|
+ m_free(cli_opts.proxyexec);
|
|
|
+ }
|
|
|
++#endif
|
|
|
+ }
|
|
|
+
|
|
|
+ static void kill_proxy_sighandler(int UNUSED(signo)) {
|