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Code Issues Releases Activity

ffmpeg_filter: fix unsafe snprintf() usage

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2012-09-09 14:11:03 +02:00
parent 1fc3e8f4ea
commit d7cb5a8daf
1 changed files with 4 additions and 5 deletions
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9
ffmpeg_filter.c
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@@ -424,18 +424,17 @@ static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter,
if (sample_fmts || sample_rates || channel_layouts) { if (sample_fmts || sample_rates || channel_layouts) {
AVFilterContext *format; AVFilterContext *format;
char args[256]; char args[256];
int len = 0; args[0] = 0;
if (sample_fmts) if (sample_fmts)
len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:", av_strlcatf(args, sizeof(args), "sample_fmts=%s:",
sample_fmts); sample_fmts);
if (sample_rates) if (sample_rates)
len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:", av_strlcatf(args, sizeof(args), "sample_rates=%s:",
sample_rates); sample_rates);
if (channel_layouts) if (channel_layouts)
len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:", av_strlcatf(args, sizeof(args), "channel_layouts=%s:",
channel_layouts); channel_layouts);
args[len - 1] = 0;
av_freep(&sample_fmts); av_freep(&sample_fmts);
av_freep(&sample_rates); av_freep(&sample_rates);