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matroskademux: use g_memdup2() as g_memdup() is deprecated

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- ebml-read: add some sanity checks when going from 64-bit
  to 32-bit length
- matroska-ids: codec_data_size has been checked via
  gst_ebml_read_binary(), is existing allocation.
- matroska-demux: alloc size is from existing allocations

g_memdup() is deprecated since GLib 2.68 and we want to avoid
deprecation warnings with recent versions of GLib.

Also use gst_buffer_new_memdup() instead of _wrapped(g_memdup(),..).

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/993>
This commit is contained in:
Tim-Philipp Müller 2021-05-23 01:28:11 +01:00
parent bf56fd97b6
commit 05854f74c5
4 changed files with 34 additions and 31 deletions
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15
gst/matroska/ebml-read.c
View file

@ -366,6 +366,19 @@ gst_ebml_read_bytes (GstEbmlRead * ebml, guint32 * id, const guint8 ** data,
if (!gst_byte_reader_skip (gst_ebml_read_br (ebml), prefix))
return GST_FLOW_ERROR; /* FIXME: do proper error handling */
/* This shouldn't happen here with the elements read through this function */
if (length == GST_EBML_SIZE_UNKNOWN || length == G_MAXUINT64) {
GST_ERROR_OBJECT (ebml->el, "element 0x%x has undefined length!", *id);
return GST_FLOW_ERROR;
}
/* Sanity check since we're downcasting a 64-bit len to possibly 32-bit here */
if (length >= G_MAXUINT) {
GST_ERROR_OBJECT (ebml->el, "element 0x%x too large, "
"size %" G_GUINT64_FORMAT, *id, length);
return GST_FLOW_ERROR;
}
*data = NULL;
if (G_LIKELY (length > 0)) {
if (!gst_byte_reader_get_data (gst_ebml_read_br (ebml), length, data))
@ -663,7 +676,7 @@ gst_ebml_read_binary (GstEbmlRead * ebml,
return ret;
*length = size;
*binary = g_memdup (data, size);
*binary = g_memdup2 (data, size);
return GST_FLOW_OK;
}

31
gst/matroska/matroska-demux.c
View file

@ -3845,8 +3845,7 @@ gst_matroska_demux_add_mpeg_seq_header (GstElement * element,
GST_DEBUG_OBJECT (element, "Prepending MPEG sequence header");
newbuf = gst_buffer_new_wrapped (g_memdup (seq_header, seq_header_len),
seq_header_len);
newbuf = gst_buffer_new_memdup (seq_header, seq_header_len);
gst_buffer_copy_into (newbuf, *buf, GST_BUFFER_COPY_TIMESTAMPS |
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_MEMORY, 0,
@ -6386,9 +6385,7 @@ gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext *
if (size > sizeof (gst_riff_strf_vids)) { /* some extra_data */
gsize offset = sizeof (gst_riff_strf_vids);
buf =
gst_buffer_new_wrapped (g_memdup ((guint8 *) vids + offset,
size - offset), size - offset);
buf = gst_buffer_new_memdup ((guint8 *) vids + offset, size - offset);
}
if (riff_fourcc)
@ -6470,7 +6467,7 @@ gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext *
if (data) {
GstBuffer *priv;
priv = gst_buffer_new_wrapped (g_memdup (data, size), size);
priv = gst_buffer_new_memdup (data, size);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL);
gst_buffer_unref (priv);
@ -6519,7 +6516,7 @@ gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext *
gst_codec_utils_h264_caps_set_level_and_profile (caps, data + 1,
size - 1);
priv = gst_buffer_new_wrapped (g_memdup (data, size), size);
priv = gst_buffer_new_memdup (data, size);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL);
gst_buffer_unref (priv);
@ -6539,7 +6536,7 @@ gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext *
gst_codec_utils_h265_caps_set_level_tier_and_profile (caps, data + 1,
size - 1);
priv = gst_buffer_new_wrapped (g_memdup (data, size), size);
priv = gst_buffer_new_memdup (data, size);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL);
gst_buffer_unref (priv);
@ -6578,9 +6575,7 @@ gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext *
subformat = GST_READ_UINT32_BE (data + 0x1a);
rformat = GST_READ_UINT32_BE (data + 0x1e);
priv =
gst_buffer_new_wrapped (g_memdup (data + 0x1a, size - 0x1a),
size - 0x1a);
priv = gst_buffer_new_memdup (data + 0x1a, size - 0x1a);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, "format",
G_TYPE_INT, rformat, "subformat", G_TYPE_INT, subformat, NULL);
gst_buffer_unref (priv);
@ -6612,7 +6607,7 @@ gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext *
if (data) {
GstBuffer *priv;
priv = gst_buffer_new_wrapped (g_memdup (data, size), size);
priv = gst_buffer_new_memdup (data, size);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL);
gst_buffer_unref (priv);
} else {
@ -7012,8 +7007,7 @@ gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext *
}
tmp =
gst_buffer_new_wrapped (g_memdup (context->codec_priv,
context->codec_priv_size), context->codec_priv_size);
gst_buffer_new_memdup (context->codec_priv, context->codec_priv_size);
caps = gst_codec_utils_opus_create_caps_from_header (tmp, NULL);
gst_buffer_unref (tmp);
*codec_name = g_strdup ("Opus");
@ -7103,8 +7097,8 @@ gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext *
if (freq_index == 15)
explicit_freq_bytes = 3;
GST_DEBUG ("obj_type = %u, freq_index = %u", obj_type, freq_index);
priv = gst_buffer_new_wrapped (g_memdup (context->codec_priv,
context->codec_priv_size), context->codec_priv_size);
priv = gst_buffer_new_memdup (context->codec_priv,
context->codec_priv_size);
/* assume SBR if samplerate <= 24kHz */
if (obj_type == 5 || (freq_index >= 6 && freq_index != 15) ||
(context->codec_priv_size == (5 + explicit_freq_bytes))) {
@ -7234,8 +7228,7 @@ gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext *
G_TYPE_INT, leaf_size, "width", G_TYPE_INT, sample_width, NULL);
if ((size - 78) >= extra_data_size) {
priv = gst_buffer_new_wrapped (g_memdup (data + 78, extra_data_size),
extra_data_size);
priv = gst_buffer_new_memdup (data + 78, extra_data_size);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL);
gst_buffer_unref (priv);
}
@ -7337,7 +7330,7 @@ gst_matroska_demux_subtitle_caps (GstMatroskaTrackSubtitleContext *
if (data != NULL && size > 0) {
GstBuffer *buf;
buf = gst_buffer_new_wrapped (g_memdup (data, size), size);
buf = gst_buffer_new_memdup (data, size);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, buf, NULL);
gst_buffer_unref (buf);
}

15
gst/matroska/matroska-ids.c
View file

@ -189,7 +189,7 @@ gst_matroska_parse_xiph_stream_headers (gpointer codec_data,
if (offset + length[i] > codec_data_size)
goto error;
hdr = gst_buffer_new_wrapped (g_memdup (p + offset, length[i]), length[i]);
hdr = gst_buffer_new_memdup (p + offset, length[i]);
gst_buffer_list_add (list, hdr);
offset += length[i];
@ -228,12 +228,11 @@ gst_matroska_parse_speex_stream_headers (gpointer codec_data,
list = gst_buffer_list_new ();
hdr = gst_buffer_new_wrapped (g_memdup (pdata, 80), 80);
hdr = gst_buffer_new_memdup (pdata, 80);
gst_buffer_list_add (list, hdr);
if (codec_data_size > 80) {
hdr = gst_buffer_new_wrapped (g_memdup (pdata + 80, codec_data_size - 80),
codec_data_size - 80);
hdr = gst_buffer_new_memdup (pdata + 80, codec_data_size - 80);
gst_buffer_list_add (list, hdr);
}
@ -262,9 +261,7 @@ gst_matroska_parse_opus_stream_headers (gpointer codec_data,
list = gst_buffer_list_new ();
hdr =
gst_buffer_new_wrapped (g_memdup (pdata, codec_data_size),
codec_data_size);
hdr = gst_buffer_new_memdup (pdata, codec_data_size);
gst_buffer_list_add (list, hdr);
return list;
@ -294,7 +291,7 @@ gst_matroska_parse_flac_stream_headers (gpointer codec_data,
list = gst_buffer_list_new ();
hdr = gst_buffer_new_wrapped (g_memdup (pdata, 4), 4);
hdr = gst_buffer_new_memdup (pdata, 4);
gst_buffer_list_add (list, hdr);
/* skip fLaC marker */
@ -312,7 +309,7 @@ gst_matroska_parse_flac_stream_headers (gpointer codec_data,
return NULL;
}
hdr = gst_buffer_new_wrapped (g_memdup (pdata + off, len + 4), len + 4);
hdr = gst_buffer_new_memdup (pdata + off, len + 4);
gst_buffer_list_add (list, hdr);
off += 4 + len;

4
gst/matroska/matroska-read-common.c
View file

@ -797,7 +797,7 @@ gst_matroska_read_common_parse_attached_file (GstMatroskaReadCommon * common,
DEBUG_ELEMENT_STOP (common, ebml, "AttachedFile", ret);
if (filename && mimetype && data && datalen > 0) {
if (filename && mimetype && data && datalen > 0 && datalen < G_MAXUINT) {
GstTagImageType image_type = GST_TAG_IMAGE_TYPE_NONE;
GstBuffer *tagbuffer = NULL;
GstSample *tagsample = NULL;
@ -843,7 +843,7 @@ gst_matroska_read_common_parse_attached_file (GstMatroskaReadCommon * common,
/* if this failed create an attachment buffer */
if (!tagbuffer) {
tagbuffer = gst_buffer_new_wrapped (g_memdup (data, datalen), datalen);
tagbuffer = gst_buffer_new_memdup (data, datalen);
caps = gst_type_find_helper_for_buffer (NULL, tagbuffer, NULL);
if (caps == NULL)