Fixed overwrite check for transcode jobs

transcode.c

@@ -248,7 +248,7 @@ void connect_pads(AVFilterInOut **ins, AVFilterInOut **outs)
 int main(int argc, char *argv[])
 {
 	int err, i, progress, _progress;
-	char *p, *input, *output, *inpath, *outpath, *tmppath;
+	char *p, *input, *output, *inpath, *outpath, *tmppath, *oldsrcpath;
 	AVFormatContext *demux, *mux;
 	AVCodecContext **decs, **encs;
 	AVFilterContext **srcs, **sinks;
@@ -276,7 +276,11 @@ int main(int argc, char *argv[])
 	output = jlookup(argv[4], "output");
 	outpath = buildpath(getenv(WORKER_RELEASED), jstr(jlookup(output, "path"), 0));
 	tmppath = mprintf("%s/.tmp-%i", getenv(WORKER_TMP), jobid);
-	overwrite_check(outpath, inpath, jstr(jlookup(input, "hash"), ""));
+	if (oldsrcpath = jstr(jlookup(argv[4], "srcpath"), 0))
+		oldsrcpath = buildpath(getenv(WORKER_RAW), oldsrcpath);
+	else
+		oldsrcpath = "/var/empty/nosource";
+	overwrite_check(outpath, oldsrcpath, jstr(jlookup(argv[4], "srchash"), ""));
 
 	demux = 0;
 	opts = 0;
@@ -361,7 +365,7 @@ int main(int argc, char *argv[])
 	avio_closep(&mux->pb);
 	if (!filesize(tmppath))
 		job_failed("Sanity check failed: Output file is empty");
-	overwrite_check(outpath, 0, 0);
+	overwrite_check(outpath, oldsrcpath, jstr(jlookup(argv[4], "srchash"), ""));
 	if (rename(tmppath, outpath))
 		job_failed("Overwriting output file \"%s\" failed: %s", outpath, strerror(errno));
 	unlink(tmppath);