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avformat/argo_asf: Use memcpy to copy string without its NUL

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This avoids a -Wstringop-truncation warning from GCC which takes
issue with the fact that the destination might not be NUL-terminated.

Reviewed-by: Zane van Iperen <zane@zanevaniperen.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-09-26 04:07:30 +02:00
parent 2882286a08
commit 3022f74874
1 changed files with 6 additions and 12 deletions
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18
libavformat/argo_asf.c
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@ -356,25 +356,19 @@ static int argo_asf_write_header(AVFormatContext *s)
.num_chunks = 1,
.chunk_offset = ASF_FILE_HEADER_SIZE
};
const char *name = ctx->name, *end;
size_t len;
/*
* If the user specified a name, use it as is. Otherwise take the
* basename and lop off the extension (if any).
*/
if (ctx->name) {
strncpy(fhdr.name, ctx->name, sizeof(fhdr.name));
if (name || !(end = strrchr((name = av_basename(s->url)), '.'))) {
len = strlen(name);
} else {
const char *start = av_basename(s->url);
const char *end = strrchr(start, '.');
size_t len;
if (end)
len = end - start;
else
len = strlen(start);
memcpy(fhdr.name, start, FFMIN(len, sizeof(fhdr.name)));
len = end - name;
}
memcpy(fhdr.name, name, FFMIN(len, sizeof(fhdr.name)));
chdr.num_blocks = 0;
chdr.num_samples = ASF_SAMPLE_COUNT;