mirror of https://github.com/FFmpeg/FFmpeg.git
Move the OpenSSL and GnuTLS implementations to their own files. Other than the connection code (including options) and some boilerplate, no code is actually shared. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>pull/116/merge
wm4
10 years ago
committed by
Michael Niedermayer
parent
07fc47909f
commit
4a006b9eb7
8 changed files with 548 additions and 375 deletions
@ -0,0 +1,55 @@ |
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/*
|
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* TLS/SSL Protocol |
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* Copyright (c) 2011 Martin Storsjo |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVFORMAT_TLS_H |
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#define AVFORMAT_TLS_H |
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#include "config.h" |
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#include "url.h" |
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#include "libavutil/opt.h" |
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#define CONFIG_TLS_PROTOCOL (CONFIG_TLS_GNUTLS_PROTOCOL | CONFIG_TLS_OPENSSL_PROTOCOL) |
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typedef struct TLSShared { |
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char *ca_file; |
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int verify; |
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char *cert_file; |
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char *key_file; |
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int listen; |
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char host[200]; |
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int numerichost; |
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URLContext *tcp; |
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} TLSShared; |
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#define TLS_OPTFL (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM) |
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#define TLS_COMMON_OPTIONS(pstruct, options_field) \ |
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{"ca_file", "Certificate Authority database file", offsetof(pstruct, options_field . ca_file), AV_OPT_TYPE_STRING, .flags = TLS_OPTFL }, \
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{"cafile", "Certificate Authority database file", offsetof(pstruct, options_field . ca_file), AV_OPT_TYPE_STRING, .flags = TLS_OPTFL }, \
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{"tls_verify", "Verify the peer certificate", offsetof(pstruct, options_field . verify), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = TLS_OPTFL }, \
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{"cert_file", "Certificate file", offsetof(pstruct, options_field . cert_file), AV_OPT_TYPE_STRING, .flags = TLS_OPTFL }, \
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{"key_file", "Private key file", offsetof(pstruct, options_field . key_file), AV_OPT_TYPE_STRING, .flags = TLS_OPTFL }, \
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{"listen", "Listen for incoming connections", offsetof(pstruct, options_field . listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = TLS_OPTFL } |
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int ff_tls_open_underlying(TLSShared *c, URLContext *parent, const char *uri, AVDictionary **options); |
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#endif /* AVFORMAT_TLS_H */ |
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@ -0,0 +1,233 @@ |
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/*
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* TLS/SSL Protocol |
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* Copyright (c) 2011 Martin Storsjo |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <gnutls/gnutls.h> |
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#include <gnutls/x509.h> |
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#include "avformat.h" |
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#include "internal.h" |
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#include "network.h" |
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#include "os_support.h" |
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#include "url.h" |
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#include "tls.h" |
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#include "libavutil/avstring.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/parseutils.h" |
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typedef struct TLSContext { |
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const AVClass *class; |
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TLSShared tls_shared; |
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gnutls_session_t session; |
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gnutls_certificate_credentials_t cred; |
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int need_shutdown; |
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} TLSContext; |
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static int print_tls_error(URLContext *h, int ret) |
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{ |
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switch (ret) { |
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case GNUTLS_E_AGAIN: |
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case GNUTLS_E_INTERRUPTED: |
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break; |
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case GNUTLS_E_WARNING_ALERT_RECEIVED: |
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av_log(h, AV_LOG_WARNING, "%s\n", gnutls_strerror(ret)); |
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break; |
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default: |
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av_log(h, AV_LOG_ERROR, "%s\n", gnutls_strerror(ret)); |
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break; |
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} |
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return AVERROR(EIO); |
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} |
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static int tls_close(URLContext *h) |
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{ |
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TLSContext *c = h->priv_data; |
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if (c->need_shutdown) |
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gnutls_bye(c->session, GNUTLS_SHUT_RDWR); |
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if (c->session) |
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gnutls_deinit(c->session); |
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if (c->cred) |
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gnutls_certificate_free_credentials(c->cred); |
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if (c->tls_shared.tcp) |
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ffurl_close(c->tls_shared.tcp); |
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ff_tls_deinit(); |
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return 0; |
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} |
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static ssize_t gnutls_url_pull(gnutls_transport_ptr_t transport, |
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void *buf, size_t len) |
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{ |
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URLContext *h = (URLContext*) transport; |
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int ret = ffurl_read(h, buf, len); |
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if (ret >= 0) |
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return ret; |
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if (ret == AVERROR_EXIT) |
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return 0; |
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errno = EIO; |
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return -1; |
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} |
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static ssize_t gnutls_url_push(gnutls_transport_ptr_t transport, |
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const void *buf, size_t len) |
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{ |
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URLContext *h = (URLContext*) transport; |
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int ret = ffurl_write(h, buf, len); |
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if (ret >= 0) |
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return ret; |
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if (ret == AVERROR_EXIT) |
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return 0; |
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errno = EIO; |
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return -1; |
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} |
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static int tls_open(URLContext *h, const char *uri, int flags, AVDictionary **options) |
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{ |
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TLSContext *p = h->priv_data; |
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TLSShared *c = &p->tls_shared; |
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int ret; |
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if ((ret = ff_tls_init()) < 0) |
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return ret; |
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if ((ret = ff_tls_open_underlying(c, h, uri, options)) < 0) |
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goto fail; |
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gnutls_init(&p->session, c->listen ? GNUTLS_SERVER : GNUTLS_CLIENT); |
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if (!c->listen && !c->numerichost) |
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gnutls_server_name_set(p->session, GNUTLS_NAME_DNS, c->host, strlen(c->host)); |
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gnutls_certificate_allocate_credentials(&p->cred); |
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if (c->ca_file) { |
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ret = gnutls_certificate_set_x509_trust_file(p->cred, c->ca_file, GNUTLS_X509_FMT_PEM); |
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if (ret < 0) |
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av_log(h, AV_LOG_ERROR, "%s\n", gnutls_strerror(ret)); |
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} |
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#if GNUTLS_VERSION_MAJOR >= 3 |
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else |
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gnutls_certificate_set_x509_system_trust(p->cred); |
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#endif |
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gnutls_certificate_set_verify_flags(p->cred, c->verify ? |
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GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT : 0); |
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if (c->cert_file && c->key_file) { |
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ret = gnutls_certificate_set_x509_key_file(p->cred, |
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c->cert_file, c->key_file, |
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GNUTLS_X509_FMT_PEM); |
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if (ret < 0) { |
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av_log(h, AV_LOG_ERROR, |
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"Unable to set cert/key files %s and %s: %s\n", |
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c->cert_file, c->key_file, gnutls_strerror(ret)); |
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ret = AVERROR(EIO); |
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goto fail; |
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} |
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} else if (c->cert_file || c->key_file) |
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av_log(h, AV_LOG_ERROR, "cert and key required\n"); |
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gnutls_credentials_set(p->session, GNUTLS_CRD_CERTIFICATE, p->cred); |
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gnutls_transport_set_pull_function(p->session, gnutls_url_pull); |
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gnutls_transport_set_push_function(p->session, gnutls_url_push); |
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gnutls_transport_set_ptr(p->session, c->tcp); |
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gnutls_priority_set_direct(p->session, "NORMAL", NULL); |
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ret = gnutls_handshake(p->session); |
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if (ret) { |
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ret = print_tls_error(h, ret); |
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goto fail; |
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} |
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p->need_shutdown = 1; |
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if (c->verify) { |
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unsigned int status, cert_list_size; |
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gnutls_x509_crt_t cert; |
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const gnutls_datum_t *cert_list; |
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if ((ret = gnutls_certificate_verify_peers2(p->session, &status)) < 0) { |
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av_log(h, AV_LOG_ERROR, "Unable to verify peer certificate: %s\n", |
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gnutls_strerror(ret)); |
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ret = AVERROR(EIO); |
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goto fail; |
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} |
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if (status & GNUTLS_CERT_INVALID) { |
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av_log(h, AV_LOG_ERROR, "Peer certificate failed verification\n"); |
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ret = AVERROR(EIO); |
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goto fail; |
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} |
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if (gnutls_certificate_type_get(p->session) != GNUTLS_CRT_X509) { |
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av_log(h, AV_LOG_ERROR, "Unsupported certificate type\n"); |
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ret = AVERROR(EIO); |
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goto fail; |
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} |
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gnutls_x509_crt_init(&cert); |
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cert_list = gnutls_certificate_get_peers(p->session, &cert_list_size); |
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gnutls_x509_crt_import(cert, cert_list, GNUTLS_X509_FMT_DER); |
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ret = gnutls_x509_crt_check_hostname(cert, c->host); |
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gnutls_x509_crt_deinit(cert); |
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if (!ret) { |
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av_log(h, AV_LOG_ERROR, |
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"The certificate's owner does not match hostname %s\n", c->host); |
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ret = AVERROR(EIO); |
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goto fail; |
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} |
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} |
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return 0; |
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fail: |
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tls_close(h); |
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return ret; |
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} |
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static int tls_read(URLContext *h, uint8_t *buf, int size) |
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{ |
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TLSContext *c = h->priv_data; |
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int ret = gnutls_record_recv(c->session, buf, size); |
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if (ret > 0) |
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return ret; |
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if (ret == 0) |
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return AVERROR_EOF; |
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return print_tls_error(h, ret); |
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} |
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static int tls_write(URLContext *h, const uint8_t *buf, int size) |
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{ |
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TLSContext *c = h->priv_data; |
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int ret = gnutls_record_send(c->session, buf, size); |
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if (ret > 0) |
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return ret; |
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if (ret == 0) |
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return AVERROR_EOF; |
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return print_tls_error(h, ret); |
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} |
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static const AVOption options[] = { |
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TLS_COMMON_OPTIONS(TLSContext, tls_shared), |
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{ NULL } |
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}; |
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static const AVClass tls_class = { |
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.class_name = "tls", |
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.item_name = av_default_item_name, |
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.option = options, |
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.version = LIBAVUTIL_VERSION_INT, |
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}; |
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URLProtocol ff_tls_gnutls_protocol = { |
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.name = "tls", |
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.url_open2 = tls_open, |
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.url_read = tls_read, |
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.url_write = tls_write, |
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.url_close = tls_close, |
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.priv_data_size = sizeof(TLSContext), |
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.flags = URL_PROTOCOL_FLAG_NETWORK, |
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.priv_data_class = &tls_class, |
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}; |
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@ -0,0 +1,236 @@ |
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/*
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* TLS/SSL Protocol |
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* Copyright (c) 2011 Martin Storsjo |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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#include "avformat.h" |
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#include "internal.h" |
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#include "network.h" |
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#include "os_support.h" |
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#include "url.h" |
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#include "tls.h" |
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#include "libavutil/avstring.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/parseutils.h" |
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|
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#include <openssl/bio.h> |
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#include <openssl/ssl.h> |
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#include <openssl/err.h> |
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|
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typedef struct TLSContext { |
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const AVClass *class; |
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TLSShared tls_shared; |
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SSL_CTX *ctx; |
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SSL *ssl; |
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} TLSContext; |
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|
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static int print_tls_error(URLContext *h, int ret) |
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{ |
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av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL)); |
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return AVERROR(EIO); |
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} |
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|
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static int tls_close(URLContext *h) |
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{ |
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TLSContext *c = h->priv_data; |
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if (c->ssl) { |
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SSL_shutdown(c->ssl); |
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SSL_free(c->ssl); |
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} |
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if (c->ctx) |
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SSL_CTX_free(c->ctx); |
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if (c->tls_shared.tcp) |
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ffurl_close(c->tls_shared.tcp); |
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ff_tls_deinit(); |
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return 0; |
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} |
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|
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static int url_bio_create(BIO *b) |
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{ |
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b->init = 1; |
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b->ptr = NULL; |
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b->flags = 0; |
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return 1; |
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} |
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|
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static int url_bio_destroy(BIO *b) |
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{ |
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return 1; |
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} |
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|
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static int url_bio_bread(BIO *b, char *buf, int len) |
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{ |
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URLContext *h = b->ptr; |
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int ret = ffurl_read(h, buf, len); |
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if (ret >= 0) |
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return ret; |
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BIO_clear_retry_flags(b); |
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if (ret == AVERROR_EXIT) |
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return 0; |
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return -1; |
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} |
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|
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static int url_bio_bwrite(BIO *b, const char *buf, int len) |
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{ |
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URLContext *h = b->ptr; |
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int ret = ffurl_write(h, buf, len); |
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if (ret >= 0) |
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return ret; |
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BIO_clear_retry_flags(b); |
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if (ret == AVERROR_EXIT) |
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return 0; |
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return -1; |
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} |
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|
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static long url_bio_ctrl(BIO *b, int cmd, long num, void *ptr) |
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{ |
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if (cmd == BIO_CTRL_FLUSH) { |
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BIO_clear_retry_flags(b); |
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return 1; |
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} |
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return 0; |
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} |
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|
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static int url_bio_bputs(BIO *b, const char *str) |
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{ |
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return url_bio_bwrite(b, str, strlen(str)); |
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} |
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|
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static BIO_METHOD url_bio_method = { |
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.type = BIO_TYPE_SOURCE_SINK, |
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.name = "urlprotocol bio", |
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.bwrite = url_bio_bwrite, |
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.bread = url_bio_bread, |
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.bputs = url_bio_bputs, |
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.bgets = NULL, |
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.ctrl = url_bio_ctrl, |
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.create = url_bio_create, |
||||
.destroy = url_bio_destroy, |
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}; |
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|
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static int tls_open(URLContext *h, const char *uri, int flags, AVDictionary **options) |
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{ |
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TLSContext *p = h->priv_data; |
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TLSShared *c = &p->tls_shared; |
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BIO *bio; |
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int ret; |
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|
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if ((ret = ff_tls_init()) < 0) |
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return ret; |
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|
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if ((ret = ff_tls_open_underlying(c, h, uri, options)) < 0) |
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goto fail; |
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|
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p->ctx = SSL_CTX_new(c->listen ? TLSv1_server_method() : TLSv1_client_method()); |
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if (!p->ctx) { |
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av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL)); |
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ret = AVERROR(EIO); |
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goto fail; |
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} |
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if (c->ca_file) { |
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if (!SSL_CTX_load_verify_locations(p->ctx, c->ca_file, NULL)) |
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av_log(h, AV_LOG_ERROR, "SSL_CTX_load_verify_locations %s\n", ERR_error_string(ERR_get_error(), NULL)); |
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} |
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if (c->cert_file && !SSL_CTX_use_certificate_chain_file(p->ctx, c->cert_file)) { |
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av_log(h, AV_LOG_ERROR, "Unable to load cert file %s: %s\n", |
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c->cert_file, ERR_error_string(ERR_get_error(), NULL)); |
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ret = AVERROR(EIO); |
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goto fail; |
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} |
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if (c->key_file && !SSL_CTX_use_PrivateKey_file(p->ctx, c->key_file, SSL_FILETYPE_PEM)) { |
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av_log(h, AV_LOG_ERROR, "Unable to load key file %s: %s\n", |
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c->key_file, ERR_error_string(ERR_get_error(), NULL)); |
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ret = AVERROR(EIO); |
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goto fail; |
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} |
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// Note, this doesn't check that the peer certificate actually matches
|
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// the requested hostname.
|
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if (c->verify) |
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SSL_CTX_set_verify(p->ctx, SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT, NULL); |
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p->ssl = SSL_new(p->ctx); |
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if (!p->ssl) { |
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av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL)); |
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ret = AVERROR(EIO); |
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goto fail; |
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} |
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bio = BIO_new(&url_bio_method); |
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bio->ptr = c->tcp; |
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SSL_set_bio(p->ssl, bio, bio); |
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if (!c->listen && !c->numerichost) |
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SSL_set_tlsext_host_name(p->ssl, c->host); |
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ret = c->listen ? SSL_accept(p->ssl) : SSL_connect(p->ssl); |
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if (ret == 0) { |
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av_log(h, AV_LOG_ERROR, "Unable to negotiate TLS/SSL session\n"); |
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ret = AVERROR(EIO); |
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goto fail; |
||||
} else if (ret < 0) { |
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ret = print_tls_error(h, ret); |
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goto fail; |
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} |
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|
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return 0; |
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fail: |
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tls_close(h); |
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return ret; |
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} |
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|
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static int tls_read(URLContext *h, uint8_t *buf, int size) |
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{ |
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TLSContext *c = h->priv_data; |
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int ret = SSL_read(c->ssl, buf, size); |
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if (ret > 0) |
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return ret; |
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if (ret == 0) |
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return AVERROR_EOF; |
||||
return print_tls_error(h, ret); |
||||
} |
||||
|
||||
static int tls_write(URLContext *h, const uint8_t *buf, int size) |
||||
{ |
||||
TLSContext *c = h->priv_data; |
||||
int ret = SSL_write(c->ssl, buf, size); |
||||
if (ret > 0) |
||||
return ret; |
||||
if (ret == 0) |
||||
return AVERROR_EOF; |
||||
return print_tls_error(h, ret); |
||||
} |
||||
|
||||
static const AVOption options[] = { |
||||
TLS_COMMON_OPTIONS(TLSContext, tls_shared), |
||||
{ NULL } |
||||
}; |
||||
|
||||
static const AVClass tls_class = { |
||||
.class_name = "tls", |
||||
.item_name = av_default_item_name, |
||||
.option = options, |
||||
.version = LIBAVUTIL_VERSION_INT, |
||||
}; |
||||
|
||||
URLProtocol ff_tls_openssl_protocol = { |
||||
.name = "tls", |
||||
.url_open2 = tls_open, |
||||
.url_read = tls_read, |
||||
.url_write = tls_write, |
||||
.url_close = tls_close, |
||||
.priv_data_size = sizeof(TLSContext), |
||||
.flags = URL_PROTOCOL_FLAG_NETWORK, |
||||
.priv_data_class = &tls_class, |
||||
}; |
||||
Loading…
Reference in new issue