crypt: Add workaround for non-fork-safe PRGs.

[paraslash.git] / server.c

diff --git a/server.c b/server.c
index cd985c6d7f554d8ef9b2d980a5fe35d0c0690c14..70d9137e7073cf7e7c7e9d3e598c742a26657560 100644 (file)
--- a/server.c
+++ b/server.c
@@ -8,10 +8,7 @@
 
 
 /**
- * \mainpage Paraslash API Reference
- *
- * Starting points for getting an overview:
- *
+ * \mainpage Starting points for getting an overview:
  *
  *     - The main programs: \ref server.c, \ref audiod.c, \ref client.c,
  *       \ref audioc.c, \ref afh.c, \ref play.c,
@@ -91,6 +88,7 @@
 #include "signal.h"
 #include "user_list.h"
 #include "color.h"
+#include "ggo.h"
 #include "version.h"
 
 __printf_2_3 void (*para_log)(int, const char*, ...) = daemon_log;
@@ -390,6 +388,9 @@ static int command_post_select(struct sched *s, struct task *t)
                goto out;
        }
        if (child_pid) {
+               /* avoid problems with non-fork-safe PRNGs */
+               unsigned char buf[16];
+               get_random_bytes_or_die(buf, sizeof(buf));
                close(new_fd);
                /* parent keeps accepting connections */
                return 0;
@@ -473,6 +474,15 @@ static int init_afs(int argc, char **argv)
        return afs_server_socket[0];
 }
 
+__noreturn static void print_help_and_die(void)
+{
+       struct ggo_help h = DEFINE_GGO_HELP(server);
+       bool d = conf.detailed_help_given;
+
+       ggo_print_help(&h, d? GPH_STANDARD_FLAGS_DETAILED : GPH_STANDARD_FLAGS);
+       exit(0);
+}
+
 static void server_init(int argc, char **argv)
 {
        struct server_cmdline_parser_params params = {
@@ -490,6 +500,8 @@ static void server_init(int argc, char **argv)
        server_cmdline_parser_ext(argc, argv, &conf, &params);
        daemon_set_loglevel(conf.loglevel_arg);
        version_handle_flag("server", conf.version_given);
+       if (conf.help_given || conf.detailed_help_given)
+               print_help_and_die();
        drop_privileges_or_die(conf.user_arg, conf.group_arg);
        /* parse config file, open log and set defaults */
        parse_config_or_die(0);