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/* ISC license. */
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>
#include <tls.h>
#include <skalibs/strerr2.h>
#include <skalibs/tai.h>
#include <skalibs/env.h>
#include <skalibs/djbunix.h>
#include <s6-networking/stls.h>
#define diecfg(cfg, s) strerr_diefu3x(96, (s), ": ", tls_config_error(cfg))
#define diectx(e, ctx, s) strerr_diefu3x(e, (s), ": ", tls_error(ctx))
int stls_s6tlsc (char const *const *argv, char const *const *envp, tain_t const *tto, uint32_t preoptions, uint32_t options, uid_t uid, gid_t gid, unsigned int verbosity, int *sfd)
{
int fds[4] = { sfd[0], sfd[1], sfd[0], sfd[1] } ;
struct tls *cctx ;
struct tls *ctx ;
struct tls_config *cfg ;
pid_t pid ;
char const *x ;
if (tls_init() < 0) strerr_diefu1sys(111, "tls_init") ;
cfg = tls_config_new() ;
if (!cfg) strerr_diefu1sys(111, "tls_config_new") ;
x = env_get2(envp, "CADIR") ;
if (x)
{
if (tls_config_set_ca_path(cfg, x) < 0)
diecfg(cfg, "tls_config_set_ca_path") ;
}
else
{
x = env_get2(envp, "CAFILE") ;
if (x)
{
if (tls_config_set_ca_file(cfg, x) < 0)
diecfg(cfg, "tls_config_set_ca_file") ;
}
else strerr_dief1x(100, "no trust anchor found - please set CADIR or CAFILE") ;
}
if (preoptions & 1)
{
x = env_get2(envp, "CERTFILE") ;
if (!x) strerr_dienotset(100, "CERTFILE") ;
if (tls_config_set_cert_file(cfg, x) < 0)
diecfg(cfg, "tls_config_set_cert_file") ;
x = env_get2(envp, "KEYFILE") ;
if (!x) strerr_dienotset(100, "KEYFILE") ;
if (tls_config_set_key_file(cfg, x) < 0)
diecfg(cfg, "tls_config_set_cert_file") ;
}
if (tls_config_set_ciphers(cfg, "secure") < 0)
diecfg(cfg, "tls_config_set_ciphers") ;
if (tls_config_set_dheparams(cfg, "auto") < 0)
diecfg(cfg, "tls_config_set_dheparams") ;
if (tls_config_set_ecdhecurve(cfg, "auto") < 0)
diecfg(cfg, "tls_config_set_ecdhecurve") ;
tls_config_verify(cfg) ;
tls_config_set_protocols(cfg, TLS_PROTOCOLS_DEFAULT) ;
tls_config_prefer_ciphers_server(cfg) ;
ctx = tls_client() ;
if (!ctx) strerr_diefu1sys(111, "tls_client") ;
if (tls_configure(ctx, cfg) < 0) diectx(97, ctx, "tls_configure") ;
tls_config_free(cfg) ;
pid = child_spawn2(argv[0], argv, envp, fds) ;
if (!pid) strerr_diefu2sys(111, "spawn ", argv[0]) ;
if (gid && setgid(gid) < 0) strerr_diefu1sys(111, "setgid") ;
if (uid && setuid(uid) < 0) strerr_diefu1sys(111, "setuid") ;
if (tls_accept_fds(ctx, &cctx, fds[2], fds[3]) < 0)
diectx(97, ctx, "tls_accept_fds") ;
tls_free(ctx) ;
{
int wstat ;
int r = stls_run(cctx, fds, verbosity, options, tto) ;
if (r < 0) strerr_diefu1sys(111, "run SSL engine") ;
else if (r) diectx(98, cctx, "run SSL engine") ;
if (wait_pid(pid, &wstat) < 0) strerr_diefu1sys(111, "wait_pid") ;
return wait_estatus(wstat) ;
}
}
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