+++ /dev/null
-/*
- * ustream-ssl - library for SSL over ustream
- *
- * Copyright (C) 2012 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 <sys/types.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "ustream-ssl.h"
-#include "ustream-internal.h"
-
-static int urandom_fd = -1;
-
-static int s_ustream_read(void *ctx, unsigned char *buf, size_t len)
-{
- struct ustream *s = ctx;
- char *sbuf;
- int slen;
-
- if (s->eof)
- return 0;
-
- sbuf = ustream_get_read_buf(s, &slen);
- if (slen > len)
- slen = len;
-
- if (!slen)
- return POLARSSL_ERR_NET_WANT_READ;
-
- memcpy(buf, sbuf, slen);
- ustream_consume(s, slen);
-
- return slen;
-}
-
-static int s_ustream_write(void *ctx, const unsigned char *buf, size_t len)
-{
- struct ustream *s = ctx;
- int ret;
-
- ret = ustream_write(s, (const char *) buf, len, false);
- if (ret < 0 || s->write_error)
- return POLARSSL_ERR_NET_SEND_FAILED;
-
- return ret;
-}
-
-__hidden void ustream_set_io(struct ustream_ssl_ctx *ctx, void *ssl, struct ustream *conn)
-{
- ssl_set_bio(ssl, s_ustream_read, conn, s_ustream_write, conn);
-}
-
-static bool urandom_init(void)
-{
- if (urandom_fd > -1)
- return true;
-
- urandom_fd = open("/dev/urandom", O_RDONLY);
- if (urandom_fd < 0)
- return false;
-
- return true;
-}
-
-static int _urandom(void *ctx, unsigned char *out, size_t len)
-{
- if (read(urandom_fd, out, len) < 0)
- return POLARSSL_ERR_ENTROPY_SOURCE_FAILED;
-
- return 0;
-}
-
-__hidden struct ustream_ssl_ctx *
-__ustream_ssl_context_new(bool server)
-{
- struct ustream_ssl_ctx *ctx;
-
- if (!urandom_init())
- return NULL;
-
- ctx = calloc(1, sizeof(*ctx));
- if (!ctx)
- return NULL;
-
- ctx->server = server;
- pk_init(&ctx->key);
- x509_crt_init(&ctx->ca_cert);
- x509_crt_init(&ctx->cert);
-
- return ctx;
-}
-
-__hidden int __ustream_ssl_add_ca_crt_file(struct ustream_ssl_ctx *ctx, const char *file)
-{
- int ret;
-
- ret = x509_crt_parse_file(&ctx->ca_cert, file);
- if (ret)
- return -1;
-
- return 0;
-}
-
-__hidden int __ustream_ssl_set_crt_file(struct ustream_ssl_ctx *ctx, const char *file)
-{
- int ret;
-
- ret = x509_crt_parse_file(&ctx->cert, file);
- if (ret)
- return -1;
-
- return 0;
-}
-
-__hidden int __ustream_ssl_set_key_file(struct ustream_ssl_ctx *ctx, const char *file)
-{
- int ret;
-
- ret = pk_parse_keyfile(&ctx->key, file, NULL);
- if (ret)
- return -1;
-
- return 0;
-}
-
-__hidden void __ustream_ssl_context_free(struct ustream_ssl_ctx *ctx)
-{
- pk_free(&ctx->key);
- x509_crt_free(&ctx->ca_cert);
- x509_crt_free(&ctx->cert);
- free(ctx);
-}
-
-static void ustream_ssl_error(struct ustream_ssl *us, int ret)
-{
- us->error = ret;
- uloop_timeout_set(&us->error_timer, 0);
-}
-
-static bool ssl_do_wait(int ret)
-{
- switch(ret) {
- case POLARSSL_ERR_NET_WANT_READ:
- case POLARSSL_ERR_NET_WANT_WRITE:
- return true;
- default:
- return false;
- }
-}
-
-static void ustream_ssl_verify_cert(struct ustream_ssl *us)
-{
- void *ssl = us->ssl;
- const char *msg = NULL;
- bool cn_mismatch;
- int r;
-
- r = ssl_get_verify_result(ssl);
- cn_mismatch = r & BADCERT_CN_MISMATCH;
- r &= ~BADCERT_CN_MISMATCH;
-
- if (r & BADCERT_EXPIRED)
- msg = "certificate has expired";
- else if (r & BADCERT_REVOKED)
- msg = "certificate has been revoked";
- else if (r & BADCERT_NOT_TRUSTED)
- msg = "certificate is self-signed or not signed by a trusted CA";
- else
- msg = "unknown error";
-
- if (r) {
- if (us->notify_verify_error)
- us->notify_verify_error(us, r, msg);
- return;
- }
-
- if (!cn_mismatch)
- us->valid_cn = true;
-}
-
-__hidden enum ssl_conn_status __ustream_ssl_connect(struct ustream_ssl *us)
-{
- void *ssl = us->ssl;
- int r;
-
- r = ssl_handshake(ssl);
- if (r == 0) {
- ustream_ssl_verify_cert(us);
- return U_SSL_OK;
- }
-
- if (ssl_do_wait(r))
- return U_SSL_PENDING;
-
- ustream_ssl_error(us, r);
- return U_SSL_ERROR;
-}
-
-__hidden int __ustream_ssl_write(struct ustream_ssl *us, const char *buf, int len)
-{
- void *ssl = us->ssl;
- int done = 0, ret = 0;
-
- while (done != len) {
- ret = ssl_write(ssl, (const unsigned char *) buf + done, len - done);
-
- if (ret < 0) {
- if (ssl_do_wait(ret))
- return done;
-
- ustream_ssl_error(us, ret);
- return -1;
- }
-
- done += ret;
- }
-
- return done;
-}
-
-__hidden int __ustream_ssl_read(struct ustream_ssl *us, char *buf, int len)
-{
- int ret = ssl_read(us->ssl, (unsigned char *) buf, len);
-
- if (ret < 0) {
- if (ssl_do_wait(ret))
- return U_SSL_PENDING;
-
- if (ret == POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY)
- return 0;
-
- ustream_ssl_error(us, ret);
- return U_SSL_ERROR;
- }
-
- return ret;
-}
-
-#define TLS_DEFAULT_CIPHERS \
- TLS_CIPHER(AES_256_CBC_SHA256) \
- TLS_CIPHER(AES_256_GCM_SHA384) \
- TLS_CIPHER(AES_256_CBC_SHA) \
- TLS_CIPHER(CAMELLIA_256_CBC_SHA256) \
- TLS_CIPHER(CAMELLIA_256_CBC_SHA) \
- TLS_CIPHER(AES_128_CBC_SHA256) \
- TLS_CIPHER(AES_128_GCM_SHA256) \
- TLS_CIPHER(AES_128_CBC_SHA) \
- TLS_CIPHER(CAMELLIA_128_CBC_SHA256) \
- TLS_CIPHER(CAMELLIA_128_CBC_SHA) \
- TLS_CIPHER(3DES_EDE_CBC_SHA)
-
-static const int default_ciphersuites_nodhe[] =
-{
-#define TLS_CIPHER(v) \
- TLS_RSA_WITH_##v,
- TLS_DEFAULT_CIPHERS
-#undef TLS_CIPHER
- 0
-};
-
-static const int default_ciphersuites[] =
-{
-#define TLS_CIPHER(v) \
- TLS_DHE_RSA_WITH_##v, \
- TLS_RSA_WITH_##v,
- TLS_DEFAULT_CIPHERS
-#undef TLS_CIPHER
- 0
-};
-
-__hidden void *__ustream_ssl_session_new(struct ustream_ssl_ctx *ctx)
-{
- ssl_context *ssl;
- int auth;
- int ep;
-
- ssl = calloc(1, sizeof(ssl_context));
- if (!ssl)
- return NULL;
-
- if (ssl_init(ssl)) {
- free(ssl);
- return NULL;
- }
-
- if (ctx->server) {
- ep = SSL_IS_SERVER;
- auth = SSL_VERIFY_NONE;
- } else {
- ep = SSL_IS_CLIENT;
- auth = SSL_VERIFY_OPTIONAL;
- }
-
- ssl_set_endpoint(ssl, ep);
- ssl_set_authmode(ssl, auth);
- ssl_set_rng(ssl, _urandom, NULL);
-
- if (ctx->server) {
- ssl_set_ciphersuites(ssl, default_ciphersuites_nodhe);
- if (ctx->cert.next)
- ssl_set_ca_chain(ssl, ctx->cert.next, NULL, NULL);
- ssl_set_own_cert(ssl, &ctx->cert, &ctx->key);
- } else {
- ssl_set_ciphersuites(ssl, default_ciphersuites);
- ssl_set_ca_chain(ssl, &ctx->ca_cert, NULL, NULL);
- }
-
- ssl_session_reset(ssl);
-
- return ssl;
-}
-
-__hidden void __ustream_ssl_session_free(void *ssl)
-{
- ssl_free(ssl);
- free(ssl);
-}
-
-__hidden void __ustream_ssl_update_peer_cn(struct ustream_ssl *us)
-{
- struct ustream_ssl_ctx *ctx = us->ctx;
-
- ssl_set_ca_chain(us->ssl, &ctx->ca_cert, NULL, us->peer_cn);
-}
+++ /dev/null
-/*
- * ustream-ssl - library for SSL over ustream
- *
- * Copyright (C) 2012 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.
- */
-
-#ifndef __USTREAM_POLARSSL_H
-#define __USTREAM_POLARSSL_H
-
-#include <polarssl/net.h>
-#include <polarssl/ssl.h>
-#include <polarssl/certs.h>
-#include <polarssl/x509.h>
-#include <polarssl/rsa.h>
-#include <polarssl/error.h>
-#include <polarssl/version.h>
-#include <polarssl/entropy.h>
-
-struct ustream_ssl_ctx {
- pk_context key;
- x509_crt ca_cert;
- x509_crt cert;
- bool server;
-};
-
-static inline char *__ustream_ssl_strerror(int error, char *buffer, int len)
-{
- error_strerror(error, buffer, len);
- return buffer;
-}
-
-static inline void __ustream_ssl_set_server_name(struct ustream_ssl *us)
-{
- ssl_set_hostname(us->ssl, us->server_name);
-}
-
-void __ustream_ssl_update_peer_cn(struct ustream_ssl *us);
-void __ustream_ssl_session_free(void *ssl);
-void *__ustream_ssl_session_new(struct ustream_ssl_ctx *ctx);
-
-#endif
projects / oweals / openwrt-ustream-ssl.git / commitdiff