static const char *create_worker(struct Worker **w_p, bool is_server, ...)
{
va_list ap;
const char *k, *v;
int klen;
struct Worker *w;
int err;
const char *mem = NULL;
void *fdata;
size_t flen;
const char *errmsg = NULL;
*w_p = NULL;
w = calloc(1, sizeof *w);
if (!w)
return "calloc";
w->wstate = HANDSHAKE;
w->is_server = is_server;
w->config = tls_config_new();
if (!w->config)
return "tls_config_new failed";
if (is_server) {
w->base = tls_server();
if (!w->base)
return "tls_server failed";
} else {
w->ctx = tls_client();
if (!w->ctx)
return "tls_client failed";
}
va_start(ap, is_server);
while (1) {
k = va_arg(ap, char *);
if (!k)
break;
v = strchr(k, '=');
if (!v) {
errmsg = k;
break;
}
v++;
klen = v - k;
err = 0;
if (!strncmp(k, "mem=", klen)) {
mem = v;
} else if (!strncmp(k, "ca=", klen)) {
if (mem) {
fdata = load_file(v, &flen);
if (!fdata) {
errmsg = strerror(errno);
break;
}
err = tls_config_set_ca_mem(w->config, fdata, flen);
free(fdata);
} else {
err = tls_config_set_ca_file(w->config, v);
}
} else if (!strncmp(k, "cert=", klen)) {
if (mem) {
fdata = load_file(v, &flen);
if (!fdata) {
errmsg = strerror(errno);
break;
}
err = tls_config_set_cert_mem(w->config, fdata, flen);
free(fdata);
} else {
err = tls_config_set_cert_file(w->config, v);
}
} else if (!strncmp(k, "key=", klen)) {
if (mem) {
fdata = load_file(v, &flen);
if (!fdata) {
errmsg = strerror(errno);
break;
}
err = tls_config_set_key_mem(w->config, fdata, flen);
free(fdata);
} else {
err = tls_config_set_key_file(w->config, v);
}
} else if (!strncmp(k, "show=", klen)) {
w->show = v;
} else if (!strncmp(k, "ciphers=", klen)) {
err = tls_config_set_ciphers(w->config, v);
} else if (!strncmp(k, "host=", klen)) {
w->hostname = v;
} else if (!strncmp(k, "noverifycert=", klen)) {
tls_config_insecure_noverifycert(w->config);
} else if (!strncmp(k, "noverifyname=", klen)) {
tls_config_insecure_noverifyname(w->config);
} else if (!strncmp(k, "verify=", klen)) {
tls_config_verify(w->config);
} else if (!strncmp(k, "dheparams=", klen)) {
err = tls_config_set_dheparams(w->config, v);
} else if (!strncmp(k, "ecdhecurve=", klen)) {
err = tls_config_set_ecdhecurve(w->config, v);
} else if (!strncmp(k, "protocols=", klen)) {
uint32_t protos;
err = tls_config_parse_protocols(&protos, v);
tls_config_set_protocols(w->config, protos);
} else if (!strncmp(k, "peer-sha1=", klen)) {
w->peer_fingerprint_sha1 = v;
} else if (!strncmp(k, "peer-sha256=", klen)) {
w->peer_fingerprint_sha256 = v;
} else if (!strncmp(k, "verify-client=", klen)) {
tls_config_verify_client(w->config);
} else if (!strncmp(k, "verify-client-optional=", klen)) {
tls_config_verify_client_optional(w->config);
} else if (!strncmp(k, "aggressive-close=", klen)) {
w->aggressive_close = 1;
} else {
errmsg = k;
break;
}
if (err < 0) {
errmsg = k;
break;
}
}
va_end(ap);
if (errmsg)
return errmsg;
if (is_server) {
if (tls_configure(w->base, w->config) < 0)
return tls_error(w->base);
} else {
if (tls_configure(w->ctx, w->config) < 0)
return tls_error(w->ctx);
}
*w_p = w;
return "OK";
}
int
main(int argc, char *argv[], char *envp[])
{
struct tls *tls = NULL;
int ch;
environ = envp;
/* pipes to communicate with the front end */
int in = -1;
int out = -1;
bool no_name_verification = false;
bool no_cert_verification = false;
bool no_time_verification = false;
char *host = getenv("TCPREMOTEHOST");
struct tls_config *tls_config;
if (getenv("TLSC_NO_VERIFICATION") != NULL) {
no_name_verification = true;
no_cert_verification = true;
no_time_verification = true;
}
if (getenv("TLSC_NO_HOST_VERIFICATION") != NULL)
no_name_verification = true;
if (getenv("TLSC_NO_CERT_VERIFICATION") != NULL)
no_cert_verification = true;
if (getenv("TLSC_NO_TIME_VERIFICATION") != NULL)
no_time_verification = true;
if ((tls_config = tls_config_new()) == NULL)
err(EXIT_FAILURE, "tls_config_new");
char *str = NULL;
if ((str = getenv("TLSC_CERT_FILE")) != NULL)
if (tls_config_set_cert_file(tls_config, str) == -1)
err(EXIT_FAILURE, "tls_config_set_cert_file");
if ((str = getenv("TLSC_KEY_FILE")) != NULL)
if (tls_config_set_key_file(tls_config, str) == -1)
err(EXIT_FAILURE, "tls_config_set_key_file");
if ((str = getenv("TLSC_CA_FILE")) != NULL)
if (tls_config_set_ca_file(tls_config, str) == -1)
err(EXIT_FAILURE, "tls_config_set_ca_file");
if ((str = getenv("TLSC_CA_PATH")) != NULL)
if (tls_config_set_ca_path(tls_config, str) == -1)
err(EXIT_FAILURE, "tls_config_set_ca_path");
while ((ch = getopt(argc, argv, "c:k:f:p:n:HCTVh")) != -1) {
switch (ch) {
case 'c':
if (tls_config_set_cert_file(tls_config, optarg) == -1)
err(EXIT_FAILURE, "tls_config_set_cert_file");
break;
case 'k':
if (tls_config_set_key_file(tls_config, optarg) == -1)
err(EXIT_FAILURE, "tls_config_set_key_file");
break;
case 'f':
if (tls_config_set_ca_file(tls_config, optarg) == -1)
err(EXIT_FAILURE, "tls_config_set_ca_file");
break;
case 'p':
if (tls_config_set_ca_path(tls_config, optarg) == -1)
err(EXIT_FAILURE, "tls_config_set_ca_path");
break;
case 'n':
if ((host = strdup(optarg)) == NULL) goto err;
break;
case 'H':
no_name_verification = true;
break;
case 'C':
no_cert_verification = true;
break;
case 'T':
no_time_verification = true;
break;
case 'V':
no_name_verification = true;
no_cert_verification = true;
no_time_verification = true;
break;
case 'h':
default:
usage();
/* NOTREACHED */
}
}
argc -= optind;
argv += optind;
if (argc < 1)
usage();
/* verification settings */
if (no_cert_verification)
tls_config_insecure_noverifycert(tls_config);
if (no_name_verification)
tls_config_insecure_noverifyname(tls_config);
if (no_time_verification)
tls_config_insecure_noverifytime(tls_config);
/* libtls setup */
if (tls_init() != 0)
err(EXIT_FAILURE, "tls_init");
if ((tls = tls_client()) == NULL)
err(EXIT_FAILURE, "tls_client");
if (tls_configure(tls, tls_config) != 0)
err(EXIT_FAILURE, "tls_configure");
if (tls_connect_fds(tls, READ_FD, WRITE_FD, host) == -1)
goto err;
if (tls_handshake(tls) == -1)
goto err;
/* overide PROTO to signal the application layer that the communication
* channel is save. */
if (setenv("PROTO", "SSL", 1) == -1)
err(EXIT_FAILURE, "setenv");
/* fork front end program */
char *prog = argv[0];
# define PIPE_READ 0
# define PIPE_WRITE 1
int pi[2]; /* input pipe */
int po[2]; /* output pipe */
if (pipe(pi) == -1) err(EXIT_FAILURE, "pipe");
if (pipe(po) == -1) err(EXIT_FAILURE, "pipe");
switch (fork()) {
case -1:
err(EXIT_FAILURE, "fork");
case 0: /* client program */
/* close non-using ends of pipes */
if (close(pi[PIPE_READ]) == -1) err(EXIT_FAILURE, "close");
if (close(po[PIPE_WRITE]) == -1) err(EXIT_FAILURE, "close");
/*
* We have to move one descriptor cause po[] may
* overlaps with descriptor 6 and 7.
*/
int po_read = 0;
if ((po_read = dup(po[PIPE_READ])) == -1)
err(EXIT_FAILURE, "dup");
if (close(po[PIPE_READ]) < 0) err(EXIT_FAILURE, "close");
if (dup2(pi[PIPE_WRITE], WRITE_FD) < 0)
err(EXIT_FAILURE, "dup2");
if (dup2(po_read, READ_FD) < 0) err(EXIT_FAILURE, "dup2");
if (close(pi[PIPE_WRITE]) < 0) err(EXIT_FAILURE, "close");
if (close(po_read) < 0) err(EXIT_FAILURE, "close");
execvpe(prog, argv, environ);
err(EXIT_FAILURE, "execvpe");
default: break; /* parent */
}
/* close non-using ends of pipes */
if (close(pi[PIPE_WRITE]) == -1) err(EXIT_FAILURE, "close");
if (close(po[PIPE_READ]) == -1) err(EXIT_FAILURE, "close");
in = pi[PIPE_READ];
out = po[PIPE_WRITE];
/* communication loop */
for (;;) {
int ret;
char buf[BUFSIZ];
ssize_t sn = 0;
fd_set readfds;
FD_ZERO(&readfds);
FD_SET(in, &readfds);
FD_SET(READ_FD, &readfds);
int max_fd = MAX(in, READ_FD);
ret = select(max_fd+1, &readfds, NULL, NULL, NULL);
if (ret == -1)
err(EXIT_FAILURE, "select");
if (FD_ISSET(READ_FD, &readfds)) {
do {
again:
sn = tls_read(tls, buf, sizeof buf);
if (sn == TLS_WANT_POLLIN ||
sn == TLS_WANT_POLLOUT)
goto again;
if (sn == -1)
goto err;
if (sn == 0)
return EXIT_SUCCESS;
if (write(out, buf, sn) == -1)
err(EXIT_FAILURE, "write()");
} while (sn == sizeof buf);
} else if (FD_ISSET(in, &readfds)) {
if ((sn = read(in, buf, sizeof buf)) == -1)
err(EXIT_FAILURE, "read()");
if (sn == 0)
goto out;
if ((sn = tls_write(tls, buf, sn)) == -1)
goto out;
}
}
out:
tls_close(tls);
return EXIT_SUCCESS;
err:
errx(EXIT_FAILURE, "tls_error: %s", tls_error(tls));
}
struct tls_config *
https_init(void)
{
struct tls_config *tls_config;
char *str;
int depth;
uint32_t http_tls_protocols;
const char *errstr;
if (tls_init() != 0)
errx(1, "tls init failed");
if ((tls_config = tls_config_new()) == NULL)
errx(1, "tls config_new failed");
tls_config_set_protocols(tls_config, TLS_PROTOCOLS_ALL);
if (tls_config_set_ciphers(tls_config, "compat") != 0)
errx(1, "tls set ciphers failed");
if (tls_options == NULL)
return tls_config;
while (*tls_options) {
switch (getsubopt(&tls_options, tls_verify_opts, &str)) {
case HTTP_TLS_CAFILE:
if (str == NULL)
errx(1, "missing CA file");
if (tls_config_set_ca_file(tls_config, str) != 0)
errx(1, "tls ca file failed");
break;
case HTTP_TLS_CAPATH:
if (str == NULL)
errx(1, "missing ca path");
if (tls_config_set_ca_path(tls_config, str) != 0)
errx(1, "tls ca path failed");
break;
case HTTP_TLS_CIPHERS:
if (str == NULL)
errx(1, "missing cipher list");
if (tls_config_set_ciphers(tls_config, str) != 0)
errx(1, "tls set ciphers failed");
break;
case HTTP_TLS_DONTVERIFY:
tls_config_insecure_noverifycert(tls_config);
tls_config_insecure_noverifyname(tls_config);
break;
case HTTP_TLS_PROTOCOLS:
if (tls_config_parse_protocols(&http_tls_protocols,
str) != 0)
errx(1, "tls parsing protocols failed");
tls_config_set_protocols(tls_config,
http_tls_protocols);
break;
case HTTP_TLS_VERIFYDEPTH:
if (str == NULL)
errx(1, "missing depth");
depth = strtonum(str, 0, INT_MAX, &errstr);
if (errstr)
errx(1, "Cert validation depth is %s", errstr);
tls_config_set_verify_depth(tls_config, depth);
break;
default:
errx(1, "Unknown -S suboption `%s'",
suboptarg ? suboptarg : "");
}
}
return tls_config;
}
