diff options
Diffstat (limited to 'src/common/compress_lzma.c')
| -rw-r--r-- | src/common/compress_lzma.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/src/common/compress_lzma.c b/src/common/compress_lzma.c index b721bae8aa..b5393a6ba6 100644 --- a/src/common/compress_lzma.c +++ b/src/common/compress_lzma.c @@ -22,6 +22,9 @@ #include <lzma.h> #endif +/** The maximum amount of memory we allow the LZMA decoder to use, in bytes. */ +#define MEMORY_LIMIT (16 * 1024 * 1024) + /** Total number of bytes allocated for LZMA state. */ static atomic_counter_t total_lzma_allocation; @@ -33,9 +36,9 @@ memory_level(compression_level_t level) switch (level) { default: case BEST_COMPRESSION: - case HIGH_COMPRESSION: return 9; - case MEDIUM_COMPRESSION: return 6; - case LOW_COMPRESSION: return 3; + case HIGH_COMPRESSION: return 6; + case MEDIUM_COMPRESSION: return 4; + case LOW_COMPRESSION: return 2; } } @@ -191,9 +194,7 @@ tor_lzma_compress_new(int compress, goto err; } } else { - // FIXME(ahf): This should be something more sensible than - // UINT64_MAX: See #21665. - retval = lzma_alone_decoder(&result->stream, UINT64_MAX); + retval = lzma_alone_decoder(&result->stream, MEMORY_LIMIT); if (retval != LZMA_OK) { log_warn(LD_GENERAL, "Error from LZMA decoder: %s (%u).", |