From 8992cb1d0d07edc33d274f6d7924ecdf6f83d994 Mon Sep 17 00:00:00 2001 From: Tim Redfern Date: Thu, 5 Sep 2013 17:57:22 +0100 Subject: making act segmenter --- ffmpeg/libavformat/tls.c | 309 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 309 insertions(+) create mode 100644 ffmpeg/libavformat/tls.c (limited to 'ffmpeg/libavformat/tls.c') diff --git a/ffmpeg/libavformat/tls.c b/ffmpeg/libavformat/tls.c new file mode 100644 index 0000000..2c85d1d --- /dev/null +++ b/ffmpeg/libavformat/tls.c @@ -0,0 +1,309 @@ +/* + * TLS/SSL Protocol + * Copyright (c) 2011 Martin Storsjo + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "avformat.h" +#include "url.h" +#include "libavutil/avstring.h" +#include "libavutil/parseutils.h" +#if CONFIG_GNUTLS +#include +#define TLS_read(c, buf, size) gnutls_record_recv(c->session, buf, size) +#define TLS_write(c, buf, size) gnutls_record_send(c->session, buf, size) +#define TLS_shutdown(c) gnutls_bye(c->session, GNUTLS_SHUT_RDWR) +#define TLS_free(c) do { \ + if (c->session) \ + gnutls_deinit(c->session); \ + if (c->cred) \ + gnutls_certificate_free_credentials(c->cred); \ + } while (0) +#elif CONFIG_OPENSSL +#include +#include +#include +#define TLS_read(c, buf, size) SSL_read(c->ssl, buf, size) +#define TLS_write(c, buf, size) SSL_write(c->ssl, buf, size) +#define TLS_shutdown(c) SSL_shutdown(c->ssl) +#define TLS_free(c) do { \ + if (c->ssl) \ + SSL_free(c->ssl); \ + if (c->ctx) \ + SSL_CTX_free(c->ctx); \ + } while (0) +#endif +#include "network.h" +#include "os_support.h" +#include "internal.h" +#if HAVE_POLL_H +#include +#endif + +typedef struct { + const AVClass *class; + URLContext *tcp; +#if CONFIG_GNUTLS + gnutls_session_t session; + gnutls_certificate_credentials_t cred; +#elif CONFIG_OPENSSL + SSL_CTX *ctx; + SSL *ssl; +#endif + int fd; +} TLSContext; + +static int do_tls_poll(URLContext *h, int ret) +{ + TLSContext *c = h->priv_data; + struct pollfd p = { c->fd, 0, 0 }; +#if CONFIG_GNUTLS + if (ret != GNUTLS_E_AGAIN && ret != GNUTLS_E_INTERRUPTED) { + av_log(h, AV_LOG_ERROR, "%s\n", gnutls_strerror(ret)); + return AVERROR(EIO); + } + if (gnutls_record_get_direction(c->session)) + p.events = POLLOUT; + else + p.events = POLLIN; +#elif CONFIG_OPENSSL + ret = SSL_get_error(c->ssl, ret); + if (ret == SSL_ERROR_WANT_READ) { + p.events = POLLIN; + } else if (ret == SSL_ERROR_WANT_WRITE) { + p.events = POLLOUT; + } else { + av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL)); + return AVERROR(EIO); + } +#endif + if (h->flags & AVIO_FLAG_NONBLOCK) + return AVERROR(EAGAIN); + while (1) { + int n = poll(&p, 1, 100); + if (n > 0) + break; + if (ff_check_interrupt(&h->interrupt_callback)) + return AVERROR(EINTR); + } + return 0; +} + +static void set_options(URLContext *h, const char *uri) +{ + TLSContext *c = h->priv_data; + char buf[1024], key[1024]; + int has_cert, has_key, verify = 0; +#if CONFIG_GNUTLS + int ret; +#endif + const char *p = strchr(uri, '?'); + if (!p) + return; + + if (av_find_info_tag(buf, sizeof(buf), "cafile", p)) { +#if CONFIG_GNUTLS + ret = gnutls_certificate_set_x509_trust_file(c->cred, buf, GNUTLS_X509_FMT_PEM); + if (ret < 0) + av_log(h, AV_LOG_ERROR, "%s\n", gnutls_strerror(ret)); +#elif CONFIG_OPENSSL + if (!SSL_CTX_load_verify_locations(c->ctx, buf, NULL)) + av_log(h, AV_LOG_ERROR, "SSL_CTX_load_verify_locations %s\n", ERR_error_string(ERR_get_error(), NULL)); +#endif + } + + if (av_find_info_tag(buf, sizeof(buf), "verify", p)) { + char *endptr = NULL; + verify = strtol(buf, &endptr, 10); + if (buf == endptr) + verify = 1; + } + + has_cert = av_find_info_tag(buf, sizeof(buf), "cert", p); + has_key = av_find_info_tag(key, sizeof(key), "key", p); +#if CONFIG_GNUTLS + if (has_cert && has_key) { + ret = gnutls_certificate_set_x509_key_file(c->cred, buf, key, GNUTLS_X509_FMT_PEM); + if (ret < 0) + av_log(h, AV_LOG_ERROR, "%s\n", gnutls_strerror(ret)); + } else if (has_cert ^ has_key) { + av_log(h, AV_LOG_ERROR, "cert and key required\n"); + } + gnutls_certificate_set_verify_flags(c->cred, verify); +#elif CONFIG_OPENSSL + if (has_cert && !SSL_CTX_use_certificate_chain_file(c->ctx, buf)) + av_log(h, AV_LOG_ERROR, "SSL_CTX_use_certificate_chain_file %s\n", ERR_error_string(ERR_get_error(), NULL)); + if (has_key && !SSL_CTX_use_PrivateKey_file(c->ctx, key, SSL_FILETYPE_PEM)) + av_log(h, AV_LOG_ERROR, "SSL_CTX_use_PrivateKey_file %s\n", ERR_error_string(ERR_get_error(), NULL)); + if (verify) + SSL_CTX_set_verify(c->ctx, SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT, 0); +#endif +} + +static int tls_open(URLContext *h, const char *uri, int flags) +{ + TLSContext *c = h->priv_data; + int ret; + int port; + char buf[200], host[200], path[1024]; + int numerichost = 0; + struct addrinfo hints = { 0 }, *ai = NULL; + const char *proxy_path; + int use_proxy; + int server = 0; + const char *p = strchr(uri, '?'); + if (p && av_find_info_tag(buf, sizeof(buf), "listen", p)) + server = 1; + + ff_tls_init(); + + av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port, path, sizeof(path), uri); + ff_url_join(buf, sizeof(buf), "tcp", NULL, host, port, "%s", path); + + hints.ai_flags = AI_NUMERICHOST; + if (!getaddrinfo(host, NULL, &hints, &ai)) { + numerichost = 1; + freeaddrinfo(ai); + } + + proxy_path = getenv("http_proxy"); + use_proxy = !ff_http_match_no_proxy(getenv("no_proxy"), host) && + proxy_path != NULL && av_strstart(proxy_path, "http://", NULL); + + if (use_proxy) { + char proxy_host[200], proxy_auth[200], dest[200]; + int proxy_port; + av_url_split(NULL, 0, proxy_auth, sizeof(proxy_auth), + proxy_host, sizeof(proxy_host), &proxy_port, NULL, 0, + proxy_path); + ff_url_join(dest, sizeof(dest), NULL, NULL, host, port, NULL); + ff_url_join(buf, sizeof(buf), "httpproxy", proxy_auth, proxy_host, + proxy_port, "/%s", dest); + } + + ret = ffurl_open(&c->tcp, buf, AVIO_FLAG_READ_WRITE, + &h->interrupt_callback, NULL); + if (ret) + goto fail; + c->fd = ffurl_get_file_handle(c->tcp); + +#if CONFIG_GNUTLS + gnutls_init(&c->session, server ? GNUTLS_SERVER : GNUTLS_CLIENT); + if (!numerichost) + gnutls_server_name_set(c->session, GNUTLS_NAME_DNS, host, strlen(host)); + gnutls_certificate_allocate_credentials(&c->cred); + set_options(h, uri); + gnutls_credentials_set(c->session, GNUTLS_CRD_CERTIFICATE, c->cred); + gnutls_transport_set_ptr(c->session, (gnutls_transport_ptr_t) + (intptr_t) c->fd); + gnutls_priority_set_direct(c->session, "NORMAL", NULL); + while (1) { + ret = gnutls_handshake(c->session); + if (ret == 0) + break; + if ((ret = do_tls_poll(h, ret)) < 0) + goto fail; + } +#elif CONFIG_OPENSSL + c->ctx = SSL_CTX_new(server ? TLSv1_server_method() : TLSv1_client_method()); + if (!c->ctx) { + av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL)); + ret = AVERROR(EIO); + goto fail; + } + set_options(h, uri); + c->ssl = SSL_new(c->ctx); + if (!c->ssl) { + av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL)); + ret = AVERROR(EIO); + goto fail; + } + SSL_set_fd(c->ssl, c->fd); + if (!server && !numerichost) + SSL_set_tlsext_host_name(c->ssl, host); + while (1) { + ret = server ? SSL_accept(c->ssl) : SSL_connect(c->ssl); + if (ret > 0) + break; + if (ret == 0) { + av_log(h, AV_LOG_ERROR, "Unable to negotiate TLS/SSL session\n"); + ret = AVERROR(EIO); + goto fail; + } + if ((ret = do_tls_poll(h, ret)) < 0) + goto fail; + } +#endif + return 0; +fail: + TLS_free(c); + if (c->tcp) + ffurl_close(c->tcp); + ff_tls_deinit(); + return ret; +} + +static int tls_read(URLContext *h, uint8_t *buf, int size) +{ + TLSContext *c = h->priv_data; + while (1) { + int ret = TLS_read(c, buf, size); + if (ret > 0) + return ret; + if (ret == 0) + return AVERROR_EOF; + if ((ret = do_tls_poll(h, ret)) < 0) + return ret; + } + return 0; +} + +static int tls_write(URLContext *h, const uint8_t *buf, int size) +{ + TLSContext *c = h->priv_data; + while (1) { + int ret = TLS_write(c, buf, size); + if (ret > 0) + return ret; + if (ret == 0) + return AVERROR_EOF; + if ((ret = do_tls_poll(h, ret)) < 0) + return ret; + } + return 0; +} + +static int tls_close(URLContext *h) +{ + TLSContext *c = h->priv_data; + TLS_shutdown(c); + TLS_free(c); + ffurl_close(c->tcp); + ff_tls_deinit(); + return 0; +} + +URLProtocol ff_tls_protocol = { + .name = "tls", + .url_open = tls_open, + .url_read = tls_read, + .url_write = tls_write, + .url_close = tls_close, + .priv_data_size = sizeof(TLSContext), + .flags = URL_PROTOCOL_FLAG_NETWORK, +}; -- cgit v1.2.3