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authorLasse Collin <lasse.collin@tukaani.org>2008-04-30 22:16:17 +0300
committerLasse Collin <lasse.collin@tukaani.org>2008-04-30 22:16:17 +0300
commit8e074349e47ea6832b8fdf9244e581d453733433 (patch)
treeb4cf1cec021d1f8245148cc2aa16053402e24408 /src
parentUpdated THANKS. (diff)
downloadxz-8e074349e47ea6832b8fdf9244e581d453733433.tar.xz
Fix a crash with --format=alone if other filters than LZMA
are specified on the command line.
Diffstat (limited to '')
-rw-r--r--src/lzma/args.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/lzma/args.c b/src/lzma/args.c
index 24fc0939..4393a6bd 100644
--- a/src/lzma/args.c
+++ b/src/lzma/args.c
@@ -462,6 +462,15 @@ set_compression_settings(void)
// Terminate the filter options array.
opt_filters[filter_count].id = LZMA_VLI_VALUE_UNKNOWN;
+ // If we are using the LZMA_Alone format, allow exactly one filter
+ // which has to be LZMA.
+ if (opt_header == HEADER_ALONE && (filter_count != 1
+ || opt_filters[0].id != LZMA_FILTER_LZMA)) {
+ errmsg(V_ERROR, _("With --format=alone only the LZMA filter "
+ "is supported"));
+ my_exit(ERROR);
+ }
+
// Optimize the filter chain a little by removing all
// Copy filters.
for (size_t i = 0; opt_filters[i].id != LZMA_VLI_VALUE_UNKNOWN; ++i) {