diff options
| -rw-r--r-- | archival/libarchive/decompress_bunzip2.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/archival/libarchive/decompress_bunzip2.c b/archival/libarchive/decompress_bunzip2.c index dc252bb..fb1f292 100644 --- a/archival/libarchive/decompress_bunzip2.c +++ b/archival/libarchive/decompress_bunzip2.c @@ -42,6 +42,12 @@ #include "libbb.h" #include "bb_archive.h" +#if 0 +# define dbg(...) bb_error_msg(__VA_ARGS__) +#else +# define dbg(...) ((void)0) +#endif + /* Constants for Huffman coding */ #define MAX_GROUPS 6 #define GROUP_SIZE 50 /* 64 would have been more efficient */ @@ -52,13 +58,13 @@ /* Status return values */ #define RETVAL_OK 0 -#define RETVAL_LAST_BLOCK (-1) -#define RETVAL_NOT_BZIP_DATA (-2) -#define RETVAL_UNEXPECTED_INPUT_EOF (-3) -#define RETVAL_SHORT_WRITE (-4) -#define RETVAL_DATA_ERROR (-5) -#define RETVAL_OUT_OF_MEMORY (-6) -#define RETVAL_OBSOLETE_INPUT (-7) +#define RETVAL_LAST_BLOCK (dbg("%d", __LINE__), -1) +#define RETVAL_NOT_BZIP_DATA (dbg("%d", __LINE__), -2) +#define RETVAL_UNEXPECTED_INPUT_EOF (dbg("%d", __LINE__), -3) +#define RETVAL_SHORT_WRITE (dbg("%d", __LINE__), -4) +#define RETVAL_DATA_ERROR (dbg("%d", __LINE__), -5) +#define RETVAL_OUT_OF_MEMORY (dbg("%d", __LINE__), -6) +#define RETVAL_OBSOLETE_INPUT (dbg("%d", __LINE__), -7) /* Other housekeeping constants */ #define IOBUF_SIZE 4096 @@ -440,7 +446,11 @@ static int get_next_block(bunzip_data *bd) literal used is the one at the head of the mtfSymbol array.) */ if (runPos != 0) { uint8_t tmp_byte; - if (dbufCount + runCnt >= dbufSize) return RETVAL_DATA_ERROR; + if (dbufCount + runCnt > dbufSize) { + dbg("dbufCount:%d+runCnt:%d %d > dbufSize:%d RETVAL_DATA_ERROR", + dbufCount, runCnt, dbufCount + runCnt, dbufSize); + return RETVAL_DATA_ERROR; + } tmp_byte = symToByte[mtfSymbol[0]]; byteCount[tmp_byte] += runCnt; while (--runCnt >= 0) dbuf[dbufCount++] = (uint32_t)tmp_byte; |