swf: right input length for decompression

4 years ago · 4d2f9cc8a0
parent 6f03ee2e47
commit 4d2f9cc8a0
1 changed files with 3 additions and 5 deletions
--- a/src/util-file-decompression.c
+++ b/src/util-file-decompression.c
@ -97,12 +97,10 @@ int FileSwfDecompression(const uint8_t *buffer, uint32_t buffer_len,
    }

    uint32_t compressed_data_len = 0;
-    if (buffer_len > offset && compress_depth == 0) {
-        compressed_data_len = buffer_len - offset;
-    } else if (compress_depth > 0 && compress_depth <= buffer_len) {
+    if (compress_depth > 0 && compress_depth <= buffer_len) {
        compressed_data_len = compress_depth;
-    } else if (compress_depth > 0 && compress_depth > buffer_len) {
-        compressed_data_len = buffer_len;
+    } else {
+        compressed_data_len = buffer_len - offset;
    }

    /* get swf version */