From: Jeff King <peff@xxxxxxxx>
When the tree-walker runs into an error, it just calls
die(), and the message is always "corrupt tree file".
However, we are actually covering several cases here; let's
give the user a hint about what happened.
Let's also avoid using the word "corrupt", which makes it
seem like the data bit-rotted on disk. Our sha1 check would
already have found that. These errors are ones of data that
is malformed in the first place.
Signed-off-by: David Turner <dturner@xxxxxxxxxxxx>
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
t/t1007-hash-object.sh | 21 +++++++++++++++++++--
tree-walk.c | 12 +++++++-----
2 files changed, 26 insertions(+), 7 deletions(-)
diff --git a/t/t1007-hash-object.sh b/t/t1007-hash-object.sh
index acca9ac..0691b88 100755
--- a/t/t1007-hash-object.sh
+++ b/t/t1007-hash-object.sh
@@ -183,9 +183,26 @@ for args in "-w --stdin-paths" "--stdin-paths -w"; do
pop_repo
done
-test_expect_success 'corrupt tree' '
+test_expect_success 'too-short tree' '
echo abc >malformed-tree &&
- test_must_fail git hash-object -t tree malformed-tree
+ test_must_fail git hash-object -t tree malformed-tree 2>err &&
+ test_i18ngrep "too-short tree object" err
+'
+
+test_expect_success 'malformed mode in tree' '
+ hex_sha1=$(echo foo | git hash-object --stdin -w) &&
+ bin_sha1=$(echo $hex_sha1 | perl -ne "printf \"\\\\%03o\", ord for /../g") &&
+ printf "9100644 \0$bin_sha1" >tree-with-malformed-mode &&
+ test_must_fail git hash-object -t tree tree-with-malformed-mode 2>err &&
+ test_i18ngrep "malformed mode in tree entry" err
+'
+
+test_expect_success 'empty filename in tree' '
+ hex_sha1=$(echo foo | git hash-object --stdin -w) &&
+ bin_sha1=$(echo $hex_sha1 | perl -ne "printf \"\\\\%03o\", ord for /../g") &&
+ printf "100644 \0$bin_sha1" >tree-with-empty-filename &&
+ test_must_fail git hash-object -t tree tree-with-empty-filename 2>err &&
+ test_i18ngrep "empty filename in tree entry" err
'
test_expect_success 'corrupt commit' '
diff --git a/tree-walk.c b/tree-walk.c
index ce27842..24f9a0f 100644
--- a/tree-walk.c
+++ b/tree-walk.c
@@ -27,12 +27,14 @@ static void decode_tree_entry(struct tree_desc *desc, const char *buf, unsigned
const char *path;
unsigned int mode, len;
- if (size < 24 || buf[size - 21])
- die("corrupt tree file");
+ if (size < 23 || buf[size - 21])
+ die(_("too-short tree object"));
path = get_mode(buf, &mode);
- if (!path || !*path)
- die("corrupt tree file");
+ if (!path)
+ die(_("malformed mode in tree entry for tree"));
+ if (!*path)
+ die(_("empty filename in tree entry for tree"));
len = strlen(path) + 1;
/* Initialize the descriptor entry */
@@ -81,7 +83,7 @@ void update_tree_entry(struct tree_desc *desc)
unsigned long len = end - (const unsigned char *)buf;
if (size < len)
- die("corrupt tree file");
+ die(_("too-short tree file"));
buf = end;
size -= len;
desc->buffer = buf;
--
2.8.0.rc4.22.g8ae061a