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Added sanity checking in send_file_data()

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Sergey Lyubka committed 2013-05-12 23:17:44 +01:00
1 parent ab16220861
commit 94e1c5a41b
1 file changed
+3
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mongoose.c
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@@ -2727,6 +2727,9 @@ static void send_file_data(struct mg_connection *conn, struct file *filep,
char buf[MG_BUF_LEN]; char buf[MG_BUF_LEN];
int to_read, num_read, num_written; int to_read, num_read, num_written;
// Sanity check the offset
offset = offset < 0 ? 0 : offset > filep->size ? filep->size : offset;
if (len > 0 && filep->membuf != NULL && filep->size > 0) { if (len > 0 && filep->membuf != NULL && filep->size > 0) {
if (len > filep->size - offset) { if (len > filep->size - offset) {
len = filep->size - offset; len = filep->size - offset;