fix: io_set_ssl NULL in client_disconnect, SSL* type safety in protocol.h

src/shared/protocol.c

@@ -15,8 +15,8 @@ void io_set_fds(int read_fd, int write_fd) {
   io_write_fd = write_fd;
 }
 
-void io_set_ssl(void *ssl) {
-  io_ssl = (SSL *)ssl;
+void io_set_ssl(SSL *ssl) {
+  io_ssl = ssl;
 }
 
 static int io_fd(int dir_fd, int file_descriptor) {

src/shared/protocol.h

@@ -5,11 +5,13 @@
 #include <stdbool.h>
 #include <stddef.h>
 
+typedef struct ssl_st SSL;
+
 typedef int Status;
 enum NET_STATUS { STATUS_OK, STATUS_ERROR, STATUS_FINISHED, STATUS_NEXT, STATUS_CHUNK, STATUS_MANIFEST };
 
 void io_set_fds(int read_fd, int write_fd);
-void io_set_ssl(void *ssl);
+void io_set_ssl(SSL *ssl);
 bool send_n_data(int file_descriptor, void *data, size_t data_size);
 bool receive_n_data(int file_descriptor, void *data, size_t data_size);
 

src/shared/transport_tcp.c

@@ -1,5 +1,6 @@
 #include "transport_tcp.h"
 #include "log.h"
+#include "protocol.h"
 #include <arpa/inet.h>
 #include <openssl/ssl.h>
 #include <signal.h>
@@ -152,6 +153,7 @@ void client_disconnect(Client *client) {
     SSL_shutdown(client->ssl);
     SSL_free(client->ssl);
     client->ssl = NULL;
+    io_set_ssl(NULL);
   }
   close(client->file_descriptor);
   if (client->ssh_child_pid > 0) {