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/*
* uhttpd - Tiny single-threaded httpd
*
* Copyright (C) 2010-2013 Jo-Philipp Wich <xm@subsignal.org>
* Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <dlfcn.h>
#include "uhttpd.h"
#include "tls.h"
#ifdef __APPLE__
#define LIB_EXT "dylib"
#else
#define LIB_EXT "so"
#endif
static struct ustream_ssl_ops *ops;
static void *dlh;
static void *ctx;
int uh_tls_init(const char *key, const char *crt, const char *ciphers)
{
static bool _init = false;
if (_init)
return 0;
_init = true;
dlh = dlopen("libustream-ssl." LIB_EXT, RTLD_LAZY | RTLD_LOCAL);
if (!dlh) {
fprintf(stderr, "Failed to load ustream-ssl library: %s\n", dlerror());
return -ENOENT;
}
ops = dlsym(dlh, "ustream_ssl_ops");
if (!ops) {
fprintf(stderr, "Could not find required symbol 'ustream_ssl_ops' in ustream-ssl library\n");
return -ENOENT;
}
ctx = ops->context_new(true);
if (!ctx) {
fprintf(stderr, "Failed to initialize ustream-ssl\n");
return -EINVAL;
}
if (ops->context_set_crt_file(ctx, crt) ||
ops->context_set_key_file(ctx, key)) {
fprintf(stderr, "Failed to load certificate/key files\n");
return -EINVAL;
}
if (ciphers && ops->context_set_ciphers(ctx, ciphers)) {
fprintf(stderr, "No recognized ciphers in cipher list\n");
return -EINVAL;
}
return 0;
}
static void tls_ustream_read_cb(struct ustream *s, int bytes)
{
struct client *cl = container_of(s, struct client, ssl.stream);
uh_client_read_cb(cl);
}
static void tls_ustream_write_cb(struct ustream *s, int bytes)
{
struct client *cl = container_of(s, struct client, ssl.stream);
if (cl->dispatch.write_cb)
cl->dispatch.write_cb(cl);
}
static void tls_notify_state(struct ustream *s)
{
struct client *cl = container_of(s, struct client, ssl.stream);
uh_client_notify_state(cl);
}
void uh_tls_client_attach(struct client *cl)
{
cl->us = &cl->ssl.stream;
ops->init(&cl->ssl, &cl->sfd.stream, ctx, true);
cl->us->notify_read = tls_ustream_read_cb;
cl->us->notify_write = tls_ustream_write_cb;
cl->us->notify_state = tls_notify_state;
}
void uh_tls_client_detach(struct client *cl)
{
ustream_free(&cl->ssl.stream);
}
void uh_sni_redirect_add(const char *spec)
{
struct sni_redirect *r;
char *h, *u, *sep;
sep = strchr(spec, '=');
if (!sep)
return;
*sep = 0;
h = strdup(spec);
u = strdup(sep + 1);
if (!h || !u)
goto free;
r = calloc(1, sizeof(*r));
if (!r)
goto free;
r->host = h;
r->url = u;
list_add_tail(&r->list, &conf.sni_redirect);
return;
free:
free(h);
free(u);
}
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