#include "avformat.h"
#include "url.h"
#include "libavutil/avstring.h"
+#include "libavutil/opt.h"
+#include "libavutil/parseutils.h"
#if CONFIG_GNUTLS
#include <gnutls/gnutls.h>
+#include <gnutls/x509.h>
#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)
SSL *ssl;
#endif
int fd;
+ char *ca_file;
+ int verify;
+ char *cert_file;
+ char *key_file;
+ int listen;
} TLSContext;
+#define OFFSET(x) offsetof(TLSContext, x)
+#define D AV_OPT_FLAG_DECODING_PARAM
+#define E AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption options[] = {
+ {"ca_file", "Certificate Authority database file", OFFSET(ca_file), AV_OPT_TYPE_STRING, .flags = D|E },
+ {"tls_verify", "Verify the peer certificate", OFFSET(verify), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = D|E },
+ {"cert_file", "Certificate file", OFFSET(cert_file), AV_OPT_TYPE_STRING, .flags = D|E },
+ {"key_file", "Private key file", OFFSET(key_file), AV_OPT_TYPE_STRING, .flags = D|E },
+ {"listen", "Listen for incoming connections", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = D|E },
+ { NULL }
+};
+
+static const AVClass tls_class = {
+ .class_name = "tls",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
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(NULL, AV_LOG_ERROR, "%s\n", gnutls_strerror(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));
return AVERROR(EIO);
}
if (gnutls_record_get_direction(c->session))
} else if (ret == SSL_ERROR_WANT_WRITE) {
p.events = POLLOUT;
} else {
- av_log(NULL, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
+ av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
return AVERROR(EIO);
}
#endif
int n = poll(&p, 1, 100);
if (n > 0)
break;
- if (url_interrupt_cb())
+ if (ff_check_interrupt(&h->interrupt_callback))
return AVERROR(EINTR);
}
return 0;
TLSContext *c = h->priv_data;
int ret;
int port;
- char buf[200], host[200];
+ char buf[200], host[200], opts[50] = "";
int numerichost = 0;
struct addrinfo hints = { 0 }, *ai = NULL;
+ const char *proxy_path;
+ int use_proxy;
ff_tls_init();
+ if (c->listen)
+ snprintf(opts, sizeof(opts), "?listen=1");
+
av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port, NULL, 0, uri);
- ff_url_join(buf, sizeof(buf), "tcp", NULL, host, port, NULL);
+ ff_url_join(buf, sizeof(buf), "tcp", NULL, host, port, "%s", opts);
hints.ai_flags = AI_NUMERICHOST;
if (!getaddrinfo(host, NULL, &hints, &ai)) {
freeaddrinfo(ai);
}
- ret = ffurl_open(&c->tcp, buf, AVIO_FLAG_READ_WRITE);
+ proxy_path = getenv("http_proxy");
+ use_proxy = !ff_http_match_no_proxy(getenv("no_proxy"), host) &&
+ proxy_path && 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, GNUTLS_CLIENT);
- if (!numerichost)
+ gnutls_init(&c->session, c->listen ? GNUTLS_SERVER : GNUTLS_CLIENT);
+ if (!c->listen && !numerichost)
gnutls_server_name_set(c->session, GNUTLS_NAME_DNS, host, strlen(host));
gnutls_certificate_allocate_credentials(&c->cred);
- gnutls_certificate_set_verify_flags(c->cred, 0);
+ if (c->ca_file)
+ gnutls_certificate_set_x509_trust_file(c->cred, c->ca_file, GNUTLS_X509_FMT_PEM);
+#if GNUTLS_VERSION_MAJOR >= 3
+ else
+ gnutls_certificate_set_x509_system_trust(c->cred);
+#endif
+ gnutls_certificate_set_verify_flags(c->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(c->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;
+ }
+ }
gnutls_credentials_set(c->session, GNUTLS_CRD_CERTIFICATE, c->cred);
gnutls_transport_set_ptr(c->session, (gnutls_transport_ptr_t)
(intptr_t) c->fd);
if ((ret = do_tls_poll(h, ret)) < 0)
goto fail;
}
+ 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(c->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(c->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(c->session, &cert_list_size);
+ gnutls_x509_crt_import(cert, cert_list, GNUTLS_X509_FMT_DER);
+ ret = gnutls_x509_crt_check_hostname(cert, host);
+ gnutls_x509_crt_deinit(cert);
+ if (!ret) {
+ av_log(h, AV_LOG_ERROR,
+ "The certificate's owner does not match hostname %s\n", host);
+ ret = AVERROR(EIO);
+ goto fail;
+ }
+ }
#elif CONFIG_OPENSSL
- c->ctx = SSL_CTX_new(SSLv3_client_method());
+ c->ctx = SSL_CTX_new(c->listen ? TLSv1_server_method() : TLSv1_client_method());
if (!c->ctx) {
- av_log(NULL, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
+ av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
+ ret = AVERROR(EIO);
+ goto fail;
+ }
+ if (c->ca_file)
+ SSL_CTX_load_verify_locations(c->ctx, c->ca_file, NULL);
+ if (c->cert_file && !SSL_CTX_use_certificate_chain_file(c->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(c->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(c->ctx, SSL_VERIFY_PEER, NULL);
c->ssl = SSL_new(c->ctx);
if (!c->ssl) {
- av_log(NULL, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
+ 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 (!numerichost)
+ if (!c->listen && !numerichost)
SSL_set_tlsext_host_name(c->ssl, host);
while (1) {
- ret = SSL_connect(c->ssl);
+ ret = c->listen ? SSL_accept(c->ssl) : SSL_connect(c->ssl);
if (ret > 0)
break;
if (ret == 0) {
- av_log(NULL, AV_LOG_ERROR, "Unable to negotiate TLS/SSL session\n");
+ av_log(h, AV_LOG_ERROR, "Unable to negotiate TLS/SSL session\n");
ret = AVERROR(EIO);
goto fail;
}
if (ret > 0)
return ret;
if (ret == 0)
- return AVERROR(EIO);
+ return AVERROR_EOF;
if ((ret = do_tls_poll(h, ret)) < 0)
return ret;
}
if (ret > 0)
return ret;
if (ret == 0)
- return AVERROR(EIO);
+ return AVERROR_EOF;
if ((ret = do_tls_poll(h, ret)) < 0)
return ret;
}
.url_open = tls_open,
.url_read = tls_read,
.url_write = tls_write,
- .url_seek = NULL,
.url_close = tls_close,
.priv_data_size = sizeof(TLSContext),
+ .flags = URL_PROTOCOL_FLAG_NETWORK,
+ .priv_data_class = &tls_class,
};
projects / ffmpeg / blobdiff