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/* ISC license. */
#include <stdint.h>
#include <signal.h>
#include <skalibs/uint64.h>
#include <skalibs/gccattributes.h>
#include <skalibs/types.h>
#include <skalibs/prog.h>
#include <skalibs/strerr.h>
#include <skalibs/gol.h>
#include <skalibs/tai.h>
#include <skalibs/sig.h>
#include <skalibs/djbunix.h>
#include <s6-networking/config.h>
#define USAGE "s6-tlsd-io [ -v verbosity ] [ -d notif ] [ -S | -s ] [ -J | -j ] [ -Y | -y ] [ -K timeout ] [ -k snilevel ] fdr fdw"
#define dieusage() strerr_dieusage(100, USAGE)
enum golb_e
{
GOLB_CLOSENOTIFY = 0x01,
GOLB_STRICTCN = 0x02,
GOLB_CLIENTCERT = 0x10,
GOLB_CLIENTCERT_ONLY = 0x20,
GOLB_SNI = 0x40,
GOLB_SNI_ONLY = 0x80,
} ;
enum gola_e
{
GOLA_VERBOSITY,
GOLA_KIMEOUT,
GOLA_SNILEVEL,
GOLA_NOTIF,
GOLA_N
} ;
static inline void doit (int *, tain const *tto, uint32_t, uint32_t, unsigned int, unsigned int) gccattr_noreturn ;
#ifdef S6_NETWORKING_USE_TLS
#include <s6-networking/stls.h>
static inline void doit (int *fds, tain const *tto, uint32_t preoptions, uint32_t options, unsigned int verbosity, unsigned int notif)
{
struct tls *ctx = stls_server_init_and_handshake(fds + 2, tto, preoptions) ;
if (notif)
{
if (!stls_send_environment(ctx, notif))
strerr_diefu1sys(111, "write post-handshake data") ;
fd_close(notif) ;
}
stls_run(ctx, fds, options, verbosity) ;
}
#else
#ifdef S6_NETWORKING_USE_BEARSSL
#include <s6-networking/sbearssl.h>
static int handshake_cb (br_ssl_engine_context *ctx, sbearssl_handshake_cbarg *cbarg)
{
if (cbarg->notif)
{
if (!sbearssl_send_environment(ctx, cbarg)) return 0 ;
fd_close(cbarg->notif) ;
}
return 1 ;
}
static inline void doit (int *fds, tain const *tto, uint32_t preoptions, uint32_t options, unsigned int verbosity, unsigned int notif)
{
sbearssl_handshake_cbarg cbarg = SBEARSSL_HANDSHAKE_CBARG_ZERO ;
cbarg.notif = notif ;
sbearssl_server_init_and_run(fds, tto, preoptions, options, verbosity, &handshake_cb, &cbarg) ;
}
#else
#error No SSL backend configured.
#endif
#endif
int main (int argc, char const *const *argv)
{
static gol_bool const rgolb[] =
{
{ .so = 's', .lo = "no-close-notify", .clear = GOLB_CLOSENOTIFY, .set = 0 },
{ .so = 'S', .lo = "close-notify", .clear = 0, .set = GOLB_CLOSENOTIFY },
{ .so = 'j', .lo = "no-enforce-close-notify", .clear = GOLB_STRICTCN, .set = 0 },
{ .so = 'J', .lo = "enforce-close-notify", .clear = 0, .set = GOLB_STRICTCN },
{ .so = 'Y', .lo = "client-cert", .clear = GOLB_CLIENTCERT_ONLY, .set = GOLB_CLIENTCERT },
{ .so = 'y', .lo = "mandatory-client-cert", .clear = 0, .set = GOLB_CLIENTCERT | GOLB_CLIENTCERT_ONLY },
{ .so = 0, .lo = "sni", .clear = GOLB_SNI_ONLY, .set = GOLB_SNI },
{ .so = 0, .lo = "mandatory-sni", .clear = 0, .set = GOLB_SNI | GOLB_SNI_ONLY },
} ;
static gol_arg const rgola[] =
{
{ .so = 'v', .lo = "verbosity", .i = GOLA_VERBOSITY },
{ .so = 'K', .lo = "handshake-timeout", .i = GOLA_KIMEOUT },
{ .so = 'k', .lo = "sni-level", .i = GOLA_SNILEVEL },
{ .so = 'd', .lo = "notification-fd", .i = GOLA_NOTIF },
} ;
int fds[4] = { [2] = 0, [3] = 1 } ;
tain tto = TAIN_INFINITE_RELATIVE ;
unsigned int verbosity = 1 ;
unsigned int notif = 0 ;
uint64_t wgolb = 0 ;
char const *wgola[GOLA_N] = { 0 } ;
unsigned int golc ;
PROG = "s6-tlsd-io" ;
golc = GOL_main(argc, argv, rgolb, rgola, &wgolb, wgola) ;
argc -= golc ; argv += golc ;
if (argc < 2) dieusage() ;
if (wgola[GOLA_VERBOSITY])
if (!uint0_scan(wgola[GOLA_VERBOSITY], &verbosity))
strerr_dief2x(100, "verbosity", " must be an unsigned integer") ;
if (wgola[GOLA_KIMEOUT])
{
unsigned int kimeout ;
if (!uint0_scan(wgola[GOLA_KIMEOUT], &kimeout))
strerr_dief2x(100, "handshake-timeout", " must be an unsigned integer") ;
if (kimeout) tain_from_millisecs(&tto, kimeout) ;
}
if (wgola[GOLA_SNILEVEL])
{
unsigned int snilevel ;
if (!uint0_scan(wgola[GOLA_SNILEVEL], &snilevel))
strerr_dief2x(100, "sni-level", " must be an unsigned integer") ;
wgolb &= ~(GOLB_SNI | GOLB_SNI_ONLY) ;
wgolb |= (snilevel ? GOLB_SNI : 0) | (snilevel >= 2 ? GOLB_SNI_ONLY : 0) ;
}
if (wgola[GOLA_NOTIF])
if (!uint0_scan(wgola[GOLA_NOTIF], ¬if))
strerr_dief2x(100, "notification-fd", " must be an unsigned integer") ;
{
unsigned int u ;
if (!uint0_scan(argv[0], &u)) dieusage() ;
fds[0] = u ;
if (!uint0_scan(argv[1], &u)) dieusage() ;
fds[1] = u ;
}
if (!sig_ignore(SIGPIPE)) strerr_diefu1sys(111, "ignore SIGPIPE") ;
tain_now_set_stopwatch_g() ;
doit(fds, &tto, wgolb >> 4, wgolb & 0xf, verbosity, notif) ;
}
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