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https://github.com/FFmpeg/FFmpeg.git
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lavf: split tls.c
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>
This commit is contained in:
parent
07fc47909f
commit
4a006b9eb7
4
configure
vendored
4
configure
vendored
@ -2634,7 +2634,9 @@ sctp_protocol_deps="struct_sctp_event_subscribe"
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sctp_protocol_select="network"
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srtp_protocol_select="rtp_protocol"
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tcp_protocol_select="network"
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tls_protocol_deps_any="openssl gnutls"
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tls_gnutls_protocol_deps="gnutls"
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tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
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tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
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tls_protocol_select="tcp_protocol"
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udp_protocol_select="network"
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udplite_protocol_select="network"
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@ -521,7 +521,8 @@ OBJS-$(CONFIG_SCTP_PROTOCOL) += sctp.o
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OBJS-$(CONFIG_SRTP_PROTOCOL) += srtpproto.o srtp.o
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OBJS-$(CONFIG_SUBFILE_PROTOCOL) += subfile.o
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OBJS-$(CONFIG_TCP_PROTOCOL) += tcp.o
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OBJS-$(CONFIG_TLS_PROTOCOL) += tls.o
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OBJS-$(CONFIG_TLS_GNUTLS_PROTOCOL) += tls_gnutls.o tls.o
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OBJS-$(CONFIG_TLS_OPENSSL_PROTOCOL) += tls_openssl.o tls.o
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OBJS-$(CONFIG_UDP_PROTOCOL) += udp.o
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OBJS-$(CONFIG_UDPLITE_PROTOCOL) += udp.o
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OBJS-$(CONFIG_UNIX_PROTOCOL) += unix.o
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@ -377,7 +377,8 @@ void av_register_all(void)
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REGISTER_PROTOCOL(SRTP, srtp);
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REGISTER_PROTOCOL(SUBFILE, subfile);
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REGISTER_PROTOCOL(TCP, tcp);
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REGISTER_PROTOCOL(TLS, tls);
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REGISTER_PROTOCOL(TLS_GNUTLS, tls_gnutls);
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REGISTER_PROTOCOL(TLS_OPENSSL, tls_openssl);
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REGISTER_PROTOCOL(UDP, udp);
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REGISTER_PROTOCOL(UDPLITE, udplite);
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REGISTER_PROTOCOL(UNIX, unix);
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@ -32,6 +32,7 @@
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#include "rtpproto.h"
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#include "rtsp.h"
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#include "rdt.h"
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#include "tls.h"
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#include "url.h"
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static const struct RTSPStatusMessage {
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@ -20,192 +20,17 @@
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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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#include "network.h"
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#include "os_support.h"
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#include "internal.h"
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#if CONFIG_GNUTLS
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#include <gnutls/gnutls.h>
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#include <gnutls/x509.h>
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#define TLS_read(c, buf, size) gnutls_record_recv((c)->session, (buf), (size))
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#define TLS_write(c, buf, size) gnutls_record_send((c)->session, (buf), (size))
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#define TLS_shutdown(c) gnutls_bye((c)->session, GNUTLS_SHUT_RDWR)
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#define TLS_free(c) do { \
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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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} while (0)
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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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static void set_options(TLSShared *c, const char *uri)
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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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#elif CONFIG_OPENSSL
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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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#define TLS_read(c, buf, size) SSL_read((c)->ssl, (buf), (size))
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#define TLS_write(c, buf, size) SSL_write((c)->ssl, (buf), (size))
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#define TLS_shutdown(c) SSL_shutdown((c)->ssl)
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#define TLS_free(c) do { \
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if ((c)->ssl) \
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SSL_free((c)->ssl); \
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if ((c)->ctx) \
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SSL_CTX_free((c)->ctx); \
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} while (0)
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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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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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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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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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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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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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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,
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.destroy = url_bio_destroy,
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};
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#endif
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#if HAVE_POLL_H
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#include <poll.h>
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#endif
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typedef struct TLSContext {
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const AVClass *class;
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URLContext *tcp;
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#if CONFIG_GNUTLS
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gnutls_session_t session;
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gnutls_certificate_credentials_t cred;
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#elif CONFIG_OPENSSL
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SSL_CTX *ctx;
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SSL *ssl;
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#endif
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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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} TLSContext;
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#define OFFSET(x) offsetof(TLSContext, x)
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#define D AV_OPT_FLAG_DECODING_PARAM
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#define E AV_OPT_FLAG_ENCODING_PARAM
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static const AVOption options[] = {
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{"ca_file", "Certificate Authority database file", OFFSET(ca_file), AV_OPT_TYPE_STRING, .flags = D|E },
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{"cafile", "Certificate Authority database file", OFFSET(ca_file), AV_OPT_TYPE_STRING, .flags = D|E },
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{"tls_verify", "Verify the peer certificate", OFFSET(verify), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = D|E },
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{"cert_file", "Certificate file", OFFSET(cert_file), AV_OPT_TYPE_STRING, .flags = D|E },
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{"key_file", "Private key file", OFFSET(key_file), AV_OPT_TYPE_STRING, .flags = D|E },
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{"listen", "Listen for incoming connections", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = D|E },
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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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static int print_tls_error(URLContext *h, int ret)
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{
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#if CONFIG_GNUTLS
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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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#elif CONFIG_OPENSSL
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av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
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#endif
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return AVERROR(EIO);
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}
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static void set_options(URLContext *h, const char *uri)
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{
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TLSContext *c = h->priv_data;
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char buf[1024];
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const char *p = strchr(uri, '?');
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if (!p)
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@ -228,28 +53,21 @@ static void set_options(URLContext *h, const char *uri)
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c->key_file = av_strdup(buf);
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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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int ff_tls_open_underlying(TLSShared *c, URLContext *parent, const char *uri, AVDictionary **options)
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{
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TLSContext *c = h->priv_data;
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int ret;
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int port;
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const char *p;
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char buf[200], host[200], opts[50] = "";
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int numerichost = 0;
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char buf[200], opts[50] = "";
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struct addrinfo hints = { 0 }, *ai = NULL;
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const char *proxy_path;
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int use_proxy;
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#if CONFIG_OPENSSL && !CONFIG_GNUTLS
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BIO *bio;
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#endif
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if ((ret = ff_tls_init()) < 0)
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return ret;
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set_options(c, uri);
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if (c->listen)
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snprintf(opts, sizeof(opts), "?listen=1");
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av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port, NULL, 0, uri);
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av_url_split(NULL, 0, NULL, 0, c->host, sizeof(c->host), &port, NULL, 0, uri);
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p = strchr(uri, '?');
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@ -260,16 +78,16 @@ static int tls_open(URLContext *h, const char *uri, int flags, AVDictionary **op
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c->listen = 1;
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}
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ff_url_join(buf, sizeof(buf), "tcp", NULL, host, port, "%s", p);
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ff_url_join(buf, sizeof(buf), "tcp", NULL, c->host, port, "%s", p);
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hints.ai_flags = AI_NUMERICHOST;
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if (!getaddrinfo(host, NULL, &hints, &ai)) {
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numerichost = 1;
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if (!getaddrinfo(c->host, NULL, &hints, &ai)) {
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c->numerichost = 1;
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freeaddrinfo(ai);
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}
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proxy_path = getenv("http_proxy");
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use_proxy = !ff_http_match_no_proxy(getenv("no_proxy"), host) &&
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use_proxy = !ff_http_match_no_proxy(getenv("no_proxy"), c->host) &&
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proxy_path && av_strstart(proxy_path, "http://", NULL);
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if (use_proxy) {
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@ -278,185 +96,11 @@ static int tls_open(URLContext *h, const char *uri, int flags, AVDictionary **op
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av_url_split(NULL, 0, proxy_auth, sizeof(proxy_auth),
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proxy_host, sizeof(proxy_host), &proxy_port, NULL, 0,
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proxy_path);
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ff_url_join(dest, sizeof(dest), NULL, NULL, host, port, NULL);
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ff_url_join(dest, sizeof(dest), NULL, NULL, c->host, port, NULL);
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ff_url_join(buf, sizeof(buf), "httpproxy", proxy_auth, proxy_host,
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proxy_port, "/%s", dest);
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}
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ret = ffurl_open(&c->tcp, buf, AVIO_FLAG_READ_WRITE,
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&h->interrupt_callback, options);
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if (ret)
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goto fail;
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#if CONFIG_GNUTLS
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gnutls_init(&c->session, c->listen ? GNUTLS_SERVER : GNUTLS_CLIENT);
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if (!c->listen && !numerichost)
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gnutls_server_name_set(c->session, GNUTLS_NAME_DNS, host, strlen(host));
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gnutls_certificate_allocate_credentials(&c->cred);
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set_options(h, uri);
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if (c->ca_file) {
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ret = gnutls_certificate_set_x509_trust_file(c->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(c->cred);
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#endif
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gnutls_certificate_set_verify_flags(c->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(c->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(c->session, GNUTLS_CRD_CERTIFICATE, c->cred);
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gnutls_transport_set_pull_function(c->session, gnutls_url_pull);
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gnutls_transport_set_push_function(c->session, gnutls_url_push);
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gnutls_transport_set_ptr(c->session, c->tcp);
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gnutls_priority_set_direct(c->session, "NORMAL", NULL);
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ret = gnutls_handshake(c->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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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(c->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(c->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(c->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, 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", 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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#elif CONFIG_OPENSSL
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c->ctx = SSL_CTX_new(c->listen ? TLSv1_server_method() : TLSv1_client_method());
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if (!c->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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set_options(h, uri);
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if (c->ca_file) {
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if (!SSL_CTX_load_verify_locations(c->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(c->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(c->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)
|
||||
SSL_CTX_set_verify(c->ctx, SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT, NULL);
|
||||
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;
|
||||
}
|
||||
bio = BIO_new(&url_bio_method);
|
||||
bio->ptr = c->tcp;
|
||||
SSL_set_bio(c->ssl, bio, bio);
|
||||
if (!c->listen && !numerichost)
|
||||
SSL_set_tlsext_host_name(c->ssl, host);
|
||||
ret = c->listen ? SSL_accept(c->ssl) : SSL_connect(c->ssl);
|
||||
if (ret == 0) {
|
||||
av_log(h, AV_LOG_ERROR, "Unable to negotiate TLS/SSL session\n");
|
||||
ret = AVERROR(EIO);
|
||||
goto fail;
|
||||
} else if (ret < 0) {
|
||||
ret = print_tls_error(h, ret);
|
||||
goto fail;
|
||||
}
|
||||
#endif
|
||||
return 0;
|
||||
fail:
|
||||
TLS_free(c);
|
||||
if (c->tcp)
|
||||
ffurl_close(c->tcp);
|
||||
ff_tls_deinit();
|
||||
return ret;
|
||||
return ffurl_open(&c->tcp, buf, AVIO_FLAG_READ_WRITE,
|
||||
&parent->interrupt_callback, options);
|
||||
}
|
||||
|
||||
static int tls_read(URLContext *h, uint8_t *buf, int size)
|
||||
{
|
||||
TLSContext *c = h->priv_data;
|
||||
int ret = TLS_read(c, buf, size);
|
||||
if (ret > 0)
|
||||
return ret;
|
||||
if (ret == 0)
|
||||
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 = TLS_write(c, buf, size);
|
||||
if (ret > 0)
|
||||
return ret;
|
||||
if (ret == 0)
|
||||
return AVERROR_EOF;
|
||||
return print_tls_error(h, ret);
|
||||
}
|
||||
|
||||
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_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,
|
||||
};
|
||||
|
55
libavformat/tls.h
Normal file
55
libavformat/tls.h
Normal file
@ -0,0 +1,55 @@
|
||||
/*
|
||||
* TLS/SSL Protocol
|
||||
* Copyright (c) 2011 Martin Storsjo
|
||||
*
|
||||
* This file is part of FFmpeg.
|
||||
*
|
||||
* FFmpeg 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.
|
||||
*
|
||||
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#ifndef AVFORMAT_TLS_H
|
||||
#define AVFORMAT_TLS_H
|
||||
|
||||
#include "config.h"
|
||||
#include "url.h"
|
||||
#include "libavutil/opt.h"
|
||||
|
||||
#define CONFIG_TLS_PROTOCOL (CONFIG_TLS_GNUTLS_PROTOCOL | CONFIG_TLS_OPENSSL_PROTOCOL)
|
||||
|
||||
typedef struct TLSShared {
|
||||
char *ca_file;
|
||||
int verify;
|
||||
char *cert_file;
|
||||
char *key_file;
|
||||
int listen;
|
||||
|
||||
char host[200];
|
||||
int numerichost;
|
||||
|
||||
URLContext *tcp;
|
||||
} TLSShared;
|
||||
|
||||
#define TLS_OPTFL (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
|
||||
#define TLS_COMMON_OPTIONS(pstruct, options_field) \
|
||||
{"ca_file", "Certificate Authority database file", offsetof(pstruct, options_field . ca_file), AV_OPT_TYPE_STRING, .flags = TLS_OPTFL }, \
|
||||
{"cafile", "Certificate Authority database file", offsetof(pstruct, options_field . ca_file), AV_OPT_TYPE_STRING, .flags = TLS_OPTFL }, \
|
||||
{"tls_verify", "Verify the peer certificate", offsetof(pstruct, options_field . verify), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = TLS_OPTFL }, \
|
||||
{"cert_file", "Certificate file", offsetof(pstruct, options_field . cert_file), AV_OPT_TYPE_STRING, .flags = TLS_OPTFL }, \
|
||||
{"key_file", "Private key file", offsetof(pstruct, options_field . key_file), AV_OPT_TYPE_STRING, .flags = TLS_OPTFL }, \
|
||||
{"listen", "Listen for incoming connections", offsetof(pstruct, options_field . listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = TLS_OPTFL }
|
||||
|
||||
int ff_tls_open_underlying(TLSShared *c, URLContext *parent, const char *uri, AVDictionary **options);
|
||||
|
||||
#endif /* AVFORMAT_TLS_H */
|
233
libavformat/tls_gnutls.c
Normal file
233
libavformat/tls_gnutls.c
Normal file
@ -0,0 +1,233 @@
|
||||
/*
|
||||
* TLS/SSL Protocol
|
||||
* Copyright (c) 2011 Martin Storsjo
|
||||
*
|
||||
* This file is part of FFmpeg.
|
||||
*
|
||||
* FFmpeg 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.
|
||||
*
|
||||
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#include <gnutls/gnutls.h>
|
||||
#include <gnutls/x509.h>
|
||||
|
||||
#include "avformat.h"
|
||||
#include "internal.h"
|
||||
#include "network.h"
|
||||
#include "os_support.h"
|
||||
#include "url.h"
|
||||
#include "tls.h"
|
||||
#include "libavutil/avstring.h"
|
||||
#include "libavutil/opt.h"
|
||||
#include "libavutil/parseutils.h"
|
||||
|
||||
typedef struct TLSContext {
|
||||
const AVClass *class;
|
||||
TLSShared tls_shared;
|
||||
gnutls_session_t session;
|
||||
gnutls_certificate_credentials_t cred;
|
||||
int need_shutdown;
|
||||
} TLSContext;
|
||||
|
||||
static int print_tls_error(URLContext *h, int ret)
|
||||
{
|
||||
switch (ret) {
|
||||
case GNUTLS_E_AGAIN:
|
||||
case GNUTLS_E_INTERRUPTED:
|
||||
break;
|
||||
case GNUTLS_E_WARNING_ALERT_RECEIVED:
|
||||
av_log(h, AV_LOG_WARNING, "%s\n", gnutls_strerror(ret));
|
||||
break;
|
||||
default:
|
||||
av_log(h, AV_LOG_ERROR, "%s\n", gnutls_strerror(ret));
|
||||
break;
|
||||
}
|
||||
return AVERROR(EIO);
|
||||
}
|
||||
|
||||
static int tls_close(URLContext *h)
|
||||
{
|
||||
TLSContext *c = h->priv_data;
|
||||
if (c->need_shutdown)
|
||||
gnutls_bye(c->session, GNUTLS_SHUT_RDWR);
|
||||
if (c->session)
|
||||
gnutls_deinit(c->session);
|
||||
if (c->cred)
|
||||
gnutls_certificate_free_credentials(c->cred);
|
||||
if (c->tls_shared.tcp)
|
||||
ffurl_close(c->tls_shared.tcp);
|
||||
ff_tls_deinit();
|
||||
return 0;
|
||||
}
|
||||
|
||||
static ssize_t gnutls_url_pull(gnutls_transport_ptr_t transport,
|
||||
void *buf, size_t len)
|
||||
{
|
||||
URLContext *h = (URLContext*) transport;
|
||||
int ret = ffurl_read(h, buf, len);
|
||||
if (ret >= 0)
|
||||
return ret;
|
||||
if (ret == AVERROR_EXIT)
|
||||
return 0;
|
||||
errno = EIO;
|
||||
return -1;
|
||||
}
|
||||
|
||||
static ssize_t gnutls_url_push(gnutls_transport_ptr_t transport,
|
||||
const void *buf, size_t len)
|
||||
{
|
||||
URLContext *h = (URLContext*) transport;
|
||||
int ret = ffurl_write(h, buf, len);
|
||||
if (ret >= 0)
|
||||
return ret;
|
||||
if (ret == AVERROR_EXIT)
|
||||
return 0;
|
||||
errno = EIO;
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int tls_open(URLContext *h, const char *uri, int flags, AVDictionary **options)
|
||||
{
|
||||
TLSContext *p = h->priv_data;
|
||||
TLSShared *c = &p->tls_shared;
|
||||
int ret;
|
||||
|
||||
if ((ret = ff_tls_init()) < 0)
|
||||
return ret;
|
||||
|
||||
if ((ret = ff_tls_open_underlying(c, h, uri, options)) < 0)
|
||||
goto fail;
|
||||
|
||||
gnutls_init(&p->session, c->listen ? GNUTLS_SERVER : GNUTLS_CLIENT);
|
||||
if (!c->listen && !c->numerichost)
|
||||
gnutls_server_name_set(p->session, GNUTLS_NAME_DNS, c->host, strlen(c->host));
|
||||
gnutls_certificate_allocate_credentials(&p->cred);
|
||||
if (c->ca_file) {
|
||||
ret = gnutls_certificate_set_x509_trust_file(p->cred, c->ca_file, GNUTLS_X509_FMT_PEM);
|
||||
if (ret < 0)
|
||||
av_log(h, AV_LOG_ERROR, "%s\n", gnutls_strerror(ret));
|
||||
}
|
||||
#if GNUTLS_VERSION_MAJOR >= 3
|
||||
else
|
||||
gnutls_certificate_set_x509_system_trust(p->cred);
|
||||
#endif
|
||||
gnutls_certificate_set_verify_flags(p->cred, c->verify ?
|
||||
GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT : 0);
|
||||
if (c->cert_file && c->key_file) {
|
||||
ret = gnutls_certificate_set_x509_key_file(p->cred,
|
||||
c->cert_file, c->key_file,
|
||||
GNUTLS_X509_FMT_PEM);
|
||||
if (ret < 0) {
|
||||
av_log(h, AV_LOG_ERROR,
|
||||
"Unable to set cert/key files %s and %s: %s\n",
|
||||
c->cert_file, c->key_file, gnutls_strerror(ret));
|
||||
ret = AVERROR(EIO);
|
||||
goto fail;
|
||||
}
|
||||
} else if (c->cert_file || c->key_file)
|
||||
av_log(h, AV_LOG_ERROR, "cert and key required\n");
|
||||
gnutls_credentials_set(p->session, GNUTLS_CRD_CERTIFICATE, p->cred);
|
||||
gnutls_transport_set_pull_function(p->session, gnutls_url_pull);
|
||||
gnutls_transport_set_push_function(p->session, gnutls_url_push);
|
||||
gnutls_transport_set_ptr(p->session, c->tcp);
|
||||
gnutls_priority_set_direct(p->session, "NORMAL", NULL);
|
||||
ret = gnutls_handshake(p->session);
|
||||
if (ret) {
|
||||
ret = print_tls_error(h, ret);
|
||||
goto fail;
|
||||
}
|
||||
p->need_shutdown = 1;
|
||||
if (c->verify) {
|
||||
unsigned int status, cert_list_size;
|
||||
gnutls_x509_crt_t cert;
|
||||
const gnutls_datum_t *cert_list;
|
||||
if ((ret = gnutls_certificate_verify_peers2(p->session, &status)) < 0) {
|
||||
av_log(h, AV_LOG_ERROR, "Unable to verify peer certificate: %s\n",
|
||||
gnutls_strerror(ret));
|
||||
ret = AVERROR(EIO);
|
||||
goto fail;
|
||||
}
|
||||
if (status & GNUTLS_CERT_INVALID) {
|
||||
av_log(h, AV_LOG_ERROR, "Peer certificate failed verification\n");
|
||||
ret = AVERROR(EIO);
|
||||
goto fail;
|
||||
}
|
||||
if (gnutls_certificate_type_get(p->session) != GNUTLS_CRT_X509) {
|
||||
av_log(h, AV_LOG_ERROR, "Unsupported certificate type\n");
|
||||
ret = AVERROR(EIO);
|
||||
goto fail;
|
||||
}
|
||||
gnutls_x509_crt_init(&cert);
|
||||
cert_list = gnutls_certificate_get_peers(p->session, &cert_list_size);
|
||||
gnutls_x509_crt_import(cert, cert_list, GNUTLS_X509_FMT_DER);
|
||||
ret = gnutls_x509_crt_check_hostname(cert, c->host);
|
||||
gnutls_x509_crt_deinit(cert);
|
||||
if (!ret) {
|
||||
av_log(h, AV_LOG_ERROR,
|
||||
"The certificate's owner does not match hostname %s\n", c->host);
|
||||
ret = AVERROR(EIO);
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
fail:
|
||||
tls_close(h);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int tls_read(URLContext *h, uint8_t *buf, int size)
|
||||
{
|
||||
TLSContext *c = h->priv_data;
|
||||
int ret = gnutls_record_recv(c->session, buf, size);
|
||||
if (ret > 0)
|
||||
return ret;
|
||||
if (ret == 0)
|
||||
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 = gnutls_record_send(c->session, 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_gnutls_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,
|
||||
};
|
236
libavformat/tls_openssl.c
Normal file
236
libavformat/tls_openssl.c
Normal file
@ -0,0 +1,236 @@
|
||||
/*
|
||||
* TLS/SSL Protocol
|
||||
* Copyright (c) 2011 Martin Storsjo
|
||||
*
|
||||
* This file is part of FFmpeg.
|
||||
*
|
||||
* FFmpeg 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.
|
||||
*
|
||||
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#include "avformat.h"
|
||||
#include "internal.h"
|
||||
#include "network.h"
|
||||
#include "os_support.h"
|
||||
#include "url.h"
|
||||
#include "tls.h"
|
||||
#include "libavutil/avstring.h"
|
||||
#include "libavutil/opt.h"
|
||||
#include "libavutil/parseutils.h"
|
||||
|
||||
#include <openssl/bio.h>
|
||||
#include <openssl/ssl.h>
|
||||
#include <openssl/err.h>
|
||||
|
||||
typedef struct TLSContext {
|
||||
const AVClass *class;
|
||||
TLSShared tls_shared;
|
||||
SSL_CTX *ctx;
|
||||
SSL *ssl;
|
||||
} TLSContext;
|
||||
|
||||
static int print_tls_error(URLContext *h, int ret)
|
||||
{
|
||||
av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
|
||||
return AVERROR(EIO);
|
||||
}
|
||||
|
||||
static int tls_close(URLContext *h)
|
||||
{
|
||||
TLSContext *c = h->priv_data;
|
||||
if (c->ssl) {
|
||||
SSL_shutdown(c->ssl);
|
||||
SSL_free(c->ssl);
|
||||
}
|
||||
if (c->ctx)
|
||||
SSL_CTX_free(c->ctx);
|
||||
if (c->tls_shared.tcp)
|
||||
ffurl_close(c->tls_shared.tcp);
|
||||
ff_tls_deinit();
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int url_bio_create(BIO *b)
|
||||
{
|
||||
b->init = 1;
|
||||
b->ptr = NULL;
|
||||
b->flags = 0;
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int url_bio_destroy(BIO *b)
|
||||
{
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int url_bio_bread(BIO *b, char *buf, int len)
|
||||
{
|
||||
URLContext *h = b->ptr;
|
||||
int ret = ffurl_read(h, buf, len);
|
||||
if (ret >= 0)
|
||||
return ret;
|
||||
BIO_clear_retry_flags(b);
|
||||
if (ret == AVERROR_EXIT)
|
||||
return 0;
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int url_bio_bwrite(BIO *b, const char *buf, int len)
|
||||
{
|
||||
URLContext *h = b->ptr;
|
||||
int ret = ffurl_write(h, buf, len);
|
||||
if (ret >= 0)
|
||||
return ret;
|
||||
BIO_clear_retry_flags(b);
|
||||
if (ret == AVERROR_EXIT)
|
||||
return 0;
|
||||
return -1;
|
||||
}
|
||||
|
||||
static long url_bio_ctrl(BIO *b, int cmd, long num, void *ptr)
|
||||
{
|
||||
if (cmd == BIO_CTRL_FLUSH) {
|
||||
BIO_clear_retry_flags(b);
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int url_bio_bputs(BIO *b, const char *str)
|
||||
{
|
||||
return url_bio_bwrite(b, str, strlen(str));
|
||||
}
|
||||
|
||||
static BIO_METHOD url_bio_method = {
|
||||
.type = BIO_TYPE_SOURCE_SINK,
|
||||
.name = "urlprotocol bio",
|
||||
.bwrite = url_bio_bwrite,
|
||||
.bread = url_bio_bread,
|
||||
.bputs = url_bio_bputs,
|
||||
.bgets = NULL,
|
||||
.ctrl = url_bio_ctrl,
|
||||
.create = url_bio_create,
|
||||
.destroy = url_bio_destroy,
|
||||
};
|
||||
|
||||
static int tls_open(URLContext *h, const char *uri, int flags, AVDictionary **options)
|
||||
{
|
||||
TLSContext *p = h->priv_data;
|
||||
TLSShared *c = &p->tls_shared;
|
||||
BIO *bio;
|
||||
int ret;
|
||||
|
||||
if ((ret = ff_tls_init()) < 0)
|
||||
return ret;
|
||||
|
||||
if ((ret = ff_tls_open_underlying(c, h, uri, options)) < 0)
|
||||
goto fail;
|
||||
|
||||
p->ctx = SSL_CTX_new(c->listen ? TLSv1_server_method() : TLSv1_client_method());
|
||||
if (!p->ctx) {
|
||||
av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
|
||||
ret = AVERROR(EIO);
|
||||
goto fail;
|
||||
}
|
||||
if (c->ca_file) {
|
||||
if (!SSL_CTX_load_verify_locations(p->ctx, c->ca_file, NULL))
|
||||
av_log(h, AV_LOG_ERROR, "SSL_CTX_load_verify_locations %s\n", ERR_error_string(ERR_get_error(), NULL));
|
||||
}
|
||||
if (c->cert_file && !SSL_CTX_use_certificate_chain_file(p->ctx, c->cert_file)) {
|
||||
av_log(h, AV_LOG_ERROR, "Unable to load cert file %s: %s\n",
|
||||
c->cert_file, ERR_error_string(ERR_get_error(), NULL));
|
||||
ret = AVERROR(EIO);
|
||||
goto fail;
|
||||
}
|
||||
if (c->key_file && !SSL_CTX_use_PrivateKey_file(p->ctx, c->key_file, SSL_FILETYPE_PEM)) {
|
||||
av_log(h, AV_LOG_ERROR, "Unable to load key file %s: %s\n",
|
||||
c->key_file, ERR_error_string(ERR_get_error(), NULL));
|
||||
ret = AVERROR(EIO);
|
||||
goto fail;
|
||||
}
|
||||
// Note, this doesn't check that the peer certificate actually matches
|
||||
// the requested hostname.
|
||||
if (c->verify)
|
||||
SSL_CTX_set_verify(p->ctx, SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT, NULL);
|
||||
p->ssl = SSL_new(p->ctx);
|
||||
if (!p->ssl) {
|
||||
av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
|
||||
ret = AVERROR(EIO);
|
||||
goto fail;
|
||||
}
|
||||
bio = BIO_new(&url_bio_method);
|
||||
bio->ptr = c->tcp;
|
||||
SSL_set_bio(p->ssl, bio, bio);
|
||||
if (!c->listen && !c->numerichost)
|
||||
SSL_set_tlsext_host_name(p->ssl, c->host);
|
||||
ret = c->listen ? SSL_accept(p->ssl) : SSL_connect(p->ssl);
|
||||
if (ret == 0) {
|
||||
av_log(h, AV_LOG_ERROR, "Unable to negotiate TLS/SSL session\n");
|
||||
ret = AVERROR(EIO);
|
||||
goto fail;
|
||||
} else if (ret < 0) {
|
||||
ret = print_tls_error(h, ret);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
return 0;
|
||||
fail:
|
||||
tls_close(h);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int tls_read(URLContext *h, uint8_t *buf, int size)
|
||||
{
|
||||
TLSContext *c = h->priv_data;
|
||||
int ret = SSL_read(c->ssl, buf, size);
|
||||
if (ret > 0)
|
||||
return ret;
|
||||
if (ret == 0)
|
||||
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
Block a user