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Use AV_METADATA_DONT_STRDUP* / use av_malloced metadata instead of strduped

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arrays of fixed length.
Code from ffmbc with changes to adapt to our metadata API.

Originally committed as revision 20836 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2009-12-13 20:27:29 +00:00
parent b8f11ec887
commit 12ad66712a
9 changed files with 91 additions and 70 deletions
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19
libavformat/aiffdec.c
View File

@ -66,19 +66,20 @@ static int get_tag(ByteIOContext *pb, uint32_t * tag)
/* Metadata string read */
static void get_meta(AVFormatContext *s, const char *key, int size)
{
uint8_t str[1024];
int res = get_buffer(s->pb, str, FFMIN(sizeof(str)-1, size));
uint8_t *str = av_malloc(size+1);
int res;
if (!str) {
url_fskip(s->pb, size);
return;
}
res = get_buffer(s->pb, str, size);
if (res < 0)
return;
str[res] = 0;
if (size & 1)
size++;
size -= res;
if (size)
url_fskip(s->pb, size);
av_metadata_set(&s->metadata, key, str);
av_metadata_set2(&s->metadata, key, str, AV_METADATA_DONT_STRDUP_VAL);
}
/* Returns the number of sound data frames or negative on error */

17
libavformat/apetag.c
View File

@ -33,7 +33,7 @@
static int ape_tag_read_field(AVFormatContext *s)
{
ByteIOContext *pb = s->pb;
uint8_t key[1024], value[1024];
uint8_t key[1024], *value;
uint32_t size, flags;
int i, l, c;
@ -51,13 +51,14 @@ static int ape_tag_read_field(AVFormatContext *s)
av_log(s, AV_LOG_WARNING, "Invalid APE tag key '%s'.\n", key);
return -1;
}
l = FFMIN(size, sizeof(value)-1);
get_buffer(pb, value, l);
value[l] = 0;
url_fskip(pb, size-l);
if (l < size)
av_log(s, AV_LOG_WARNING, "Too long '%s' tag was truncated.\n", key);
av_metadata_set(&s->metadata, key, value);
if (size >= UINT_MAX)
return -1;
value = av_malloc(size+1);
if (!value)
return AVERROR_NOMEM;
get_buffer(pb, value, size);
value[size] = 0;
av_metadata_set2(&s->metadata, key, value, AV_METADATA_DONT_STRDUP_VAL);
return 0;
}

16
libavformat/asfdec.c
View File

@ -152,19 +152,27 @@ static int get_value(ByteIOContext *pb, int type){
static void get_tag(AVFormatContext *s, const char *key, int type, int len)
{
char value[1024];
char *value;
if ((unsigned)len >= UINT_MAX)
return;
value = av_malloc(len+1);
if (!value)
return;
if (type <= 1) { // unicode or byte
get_str16_nolen(s->pb, len, value, sizeof(value));
get_str16_nolen(s->pb, len, value, len);
} else if (type <= 5) { // boolean or DWORD or QWORD or WORD
uint64_t num = get_value(s->pb, type);
snprintf(value, sizeof(value), "%"PRIu64, num);
snprintf(value, len, "%"PRIu64, num);
} else {
url_fskip(s->pb, len);
return;
}
if (!strncmp(key, "WM/", 3))
key += 3;
av_metadata_set(&s->metadata, key, value);
av_metadata_set2(&s->metadata, key, value, AV_METADATA_DONT_STRDUP_VAL);
}
static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)

15
libavformat/avidec.c
View File

@ -230,14 +230,19 @@ static void clean_index(AVFormatContext *s){
static int avi_read_tag(AVFormatContext *s, const char *key, unsigned int size)
{
ByteIOContext *pb = s->pb;
uint8_t value[1024];
char *value;
int64_t i = url_ftell(pb);
size += (size & 1);
get_strz(pb, value, sizeof(value));
url_fseek(pb, i+size, SEEK_SET);
return av_metadata_set(&s->metadata, key, value);
if (size == UINT_MAX)
return -1;
value = av_malloc(size+1);
if (!value)
return -1;
get_strz(pb, value, size);
return av_metadata_set2(&s->metadata, key, value,
AV_METADATA_DONT_STRDUP_VAL);
}
static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)

46
libavformat/flvdec.c
View File

@ -104,25 +104,25 @@ static int flv_set_video_codec(AVFormatContext *s, AVStream *vstream, int flv_co
return 0;
}
static int amf_get_string(ByteIOContext *ioc, char *buffer, int buffsize) {
int length = get_be16(ioc);
if(length >= buffsize) {
url_fskip(ioc, length);
return -1;
}
static int amf_get_string(ByteIOContext *ioc, char **buf)
{
uint16_t len = get_be16(ioc);
get_buffer(ioc, buffer, length);
*buf = av_malloc(len+1);
if (!*buf)
return AVERROR_NOMEM;
buffer[length] = '\0';
get_buffer(ioc, *buf, len);
(*buf)[len] = '\0';
return length;
return len;
}
static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vstream, const char *key, int64_t max_pos, int depth) {
AVCodecContext *acodec, *vcodec;
ByteIOContext *ioc;
AMFDataType amf_type;
char str_val[256];
char *str = NULL;
double num_val;
num_val = 0;
@ -136,7 +136,7 @@ static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vst
case AMF_DATA_TYPE_BOOL:
num_val = get_byte(ioc); break;
case AMF_DATA_TYPE_STRING:
if(amf_get_string(ioc, str_val, sizeof(str_val)) < 0)
if(amf_get_string(ioc, &str) < 0)
return -1;
break;
case AMF_DATA_TYPE_OBJECT: {
@ -157,10 +157,11 @@ static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vst
break; //these take up no additional space
case AMF_DATA_TYPE_MIXEDARRAY:
url_fskip(ioc, 4); //skip 32-bit max array index
while(url_ftell(ioc) < max_pos - 2 && amf_get_string(ioc, str_val, sizeof(str_val)) > 0) {
while(url_ftell(ioc) < max_pos - 2 && amf_get_string(ioc, &str) > 0) {
//this is the only case in which we would want a nested parse to not skip over the object
if(amf_parse_object(s, astream, vstream, str_val, max_pos, depth + 1) < 0)
if(amf_parse_object(s, astream, vstream, str, max_pos, depth + 1) < 0)
return -1;
av_freep(&str);
}
if(get_byte(ioc) != AMF_END_OF_OBJECT)
return -1;
@ -187,16 +188,15 @@ static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vst
vcodec = vstream ? vstream->codec : NULL;
if(amf_type == AMF_DATA_TYPE_BOOL) {
av_strlcpy(str_val, num_val > 0 ? "true" : "false", sizeof(str_val));
av_metadata_set(&s->metadata, key, str_val);
av_metadata_set2(&s->metadata, key, av_d2str(num_val), AV_METADATA_DONT_STRDUP_VAL);
} else if(amf_type == AMF_DATA_TYPE_NUMBER) {
snprintf(str_val, sizeof(str_val), "%.f", num_val);
av_metadata_set(&s->metadata, key, str_val);
av_metadata_set2(&s->metadata, key, av_d2str(num_val), AV_METADATA_DONT_STRDUP_VAL);
if(!strcmp(key, "duration")) s->duration = num_val * AV_TIME_BASE;
else if(!strcmp(key, "videodatarate") && vcodec && 0 <= (int)(num_val * 1024.0))
vcodec->bit_rate = num_val * 1024.0;
} else if (amf_type == AMF_DATA_TYPE_STRING)
av_metadata_set(&s->metadata, key, str_val);
av_metadata_set2(&s->metadata, key, str,
AV_METADATA_DONT_STRDUP_VAL);
}
return 0;
@ -207,7 +207,7 @@ static int flv_read_metabody(AVFormatContext *s, int64_t next_pos) {
AVStream *stream, *astream, *vstream;
ByteIOContext *ioc;
int i;
char buffer[11]; //only needs to hold the string "onMetaData". Anything longer is something we don't want.
char *buf = NULL; //only needs to hold the string "onMetaData". Anything longer is something we don't want.
astream = NULL;
vstream = NULL;
@ -215,8 +215,11 @@ static int flv_read_metabody(AVFormatContext *s, int64_t next_pos) {
//first object needs to be "onMetaData" string
type = get_byte(ioc);
if(type != AMF_DATA_TYPE_STRING || amf_get_string(ioc, buffer, sizeof(buffer)) < 0 || strcmp(buffer, "onMetaData"))
if (type != AMF_DATA_TYPE_STRING ||
amf_get_string(ioc, &buf) < 0 || strcmp(buf, "onMetaData")) {
av_freep(&buf);
return -1;
}
//find the streams now so that amf_parse_object doesn't need to do the lookup every time it is called.
for(i = 0; i < s->nb_streams; i++) {
@ -226,8 +229,9 @@ static int flv_read_metabody(AVFormatContext *s, int64_t next_pos) {
}
//parse the second object (we want a mixed array)
if(amf_parse_object(s, astream, vstream, buffer, next_pos, 0) < 0)
if(amf_parse_object(s, astream, vstream, buf, next_pos, 0) < 0)
return -1;
av_freep(&buf);
return 0;
}

7
libavformat/oggparsevorbis.c
View File

@ -102,10 +102,9 @@ vorbis_comment(AVFormatContext * as, uint8_t *buf, int size)
memcpy(ct, v, vl);
ct[vl] = 0;
av_metadata_set(&as->metadata, tt, ct);
av_freep(&tt);
av_freep(&ct);
av_metadata_set2(&as->metadata, tt, ct,
AV_METADATA_DONT_STRDUP_KEY |
AV_METADATA_DONT_STRDUP_VAL);
}
}

11
libavformat/soxdec.c
View File

@ -93,15 +93,16 @@ static int sox_read_header(AVFormatContext *s,
return -1;
}
if (comment_size &&
comment_size + FF_INPUT_BUFFER_PADDING_SIZE >= comment_size) {
char *comment = av_mallocz(comment_size + FF_INPUT_BUFFER_PADDING_SIZE);
if (comment_size && comment_size < UINT_MAX) {
char *comment = av_malloc(comment_size+1);
if (get_buffer(pb, comment, comment_size) != comment_size) {
av_freep(&comment);
return AVERROR_IO;
}
av_metadata_set(&s->metadata, "comment", comment);
av_freep(&comment);
comment[comment_size] = 0;
av_metadata_set2(&s->metadata, "comment", comment,
AV_METADATA_DONT_STRDUP_VAL);
}
url_fskip(pb, header_size - SOX_FIXED_HDR - comment_size);

13
libavformat/vqf.c
View File

@ -45,15 +45,18 @@ static int vqf_probe(AVProbeData *probe_packet)
static void add_metadata(AVFormatContext *s, const char *tag,
unsigned int tag_len, unsigned int remaining)
{
char buf[2048];
int len = FFMIN3(tag_len, remaining, sizeof(buf) - 1);
int len = FFMIN(tag_len, remaining);
char *buf;
if (len != tag_len)
av_log(s, AV_LOG_ERROR, "Warning: truncating metadata!\n");
if (len == UINT_MAX)
return;
buf = av_malloc(len+1);
if (!buf)
return;
get_buffer(s->pb, buf, len);
buf[len] = 0;
av_metadata_set(&s->metadata, tag, buf);
av_metadata_set2(&s->metadata, tag, buf, AV_METADATA_DONT_STRDUP_VAL);
}
static int vqf_read_header(AVFormatContext *s, AVFormatParameters *ap)

17
libavformat/wc3movie.c
View File

@ -140,10 +140,9 @@ static int wc3_read_header(AVFormatContext *s,
unsigned int fourcc_tag;
unsigned int size;
AVStream *st;
char buffer[513];
int ret = 0;
int current_palette = 0;
int bytes_to_read;
char *buffer;
int i;
unsigned char rotate;
@ -185,14 +184,14 @@ static int wc3_read_header(AVFormatContext *s,
case BNAM_TAG:
/* load up the name */
if ((unsigned)size < 512)
bytes_to_read = size;
else
bytes_to_read = 512;
if ((ret = get_buffer(pb, buffer, bytes_to_read)) != bytes_to_read)
buffer = av_malloc(size+1);
if (!buffer)
return AVERROR_NOMEM;
if ((ret = get_buffer(pb, buffer, size)) != size)
return AVERROR(EIO);
buffer[bytes_to_read] = 0;
av_metadata_set(&s->metadata, "title", buffer);
buffer[size] = 0;
av_metadata_set2(&s->metadata, "title", buffer,
AV_METADATA_DONT_STRDUP_VAL);
break;
case SIZE_TAG: