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| author | Derrick Stolee <dstolee@microsoft.com> | 2020-01-31 20:16:08 +0000 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2020-01-31 13:05:29 -0800 |
| commit | 9abc60f8015d060d3f3433b105648a4725c97bd1 (patch) | |
| tree | 367534ff77b191bf1edbfa24ef61496733332b40 | |
| parent | 9e6d3e64175713bc0007f3012ea288f4dfc0a399 (diff) | |
| download | git-9abc60f8015d060d3f3433b105648a4725c97bd1.tar.gz | |
sparse-checkout: warn on globs in cone patterns
In cone mode, the sparse-checkout commmand will write patterns that
allow faster pattern matching. This matching only works if the patterns
in the sparse-checkout file are those written by that command. Users
can edit the sparse-checkout file and create patterns that cause the
cone mode matching to fail.
The cone mode patterns may end in "/*" but otherwise an un-escaped
asterisk or other glob character is invalid. Add checks to disable
cone mode when seeing these values.
A later change will properly handle escaped globs.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | dir.c | 36 | ||||
| -rwxr-xr-x | t/t1091-sparse-checkout-builtin.sh | 39 |
2 files changed, 75 insertions, 0 deletions
@@ -635,6 +635,7 @@ static void add_pattern_to_hashsets(struct pattern_list *pl, struct path_pattern struct pattern_entry *translated; char *truncated; char *data = NULL; + const char *prev, *cur, *next; if (!pl->use_cone_patterns) return; @@ -652,12 +653,47 @@ static void add_pattern_to_hashsets(struct pattern_list *pl, struct path_pattern } if (given->patternlen <= 2 || + *given->pattern == '*' || strstr(given->pattern, "**")) { /* Not a cone pattern. */ warning(_("unrecognized pattern: '%s'"), given->pattern); goto clear_hashmaps; } + prev = given->pattern; + cur = given->pattern + 1; + next = given->pattern + 2; + + while (*cur) { + /* Watch for glob characters '*', '\', '[', '?' */ + if (!is_glob_special(*cur)) + goto increment; + + /* But only if *prev != '\\' */ + if (*prev == '\\') + goto increment; + + /* But allow the initial '\' */ + if (*cur == '\\' && + is_glob_special(*next)) + goto increment; + + /* But a trailing '/' then '*' is fine */ + if (*prev == '/' && + *cur == '*' && + *next == 0) + goto increment; + + /* Not a cone pattern. */ + warning(_("unrecognized pattern: '%s'"), given->pattern); + goto clear_hashmaps; + + increment: + prev++; + cur++; + next++; + } + if (given->patternlen > 2 && !strcmp(given->pattern + given->patternlen - 2, "/*")) { if (!(given->flags & PATTERN_FLAG_NEGATIVE)) { diff --git a/t/t1091-sparse-checkout-builtin.sh b/t/t1091-sparse-checkout-builtin.sh index 2e57534799..c732abeacd 100755 --- a/t/t1091-sparse-checkout-builtin.sh +++ b/t/t1091-sparse-checkout-builtin.sh @@ -348,4 +348,43 @@ test_expect_success 'pattern-checks: too short' ' check_read_tree_errors repo "a" "disabling cone pattern matching" ' +test_expect_success 'pattern-checks: trailing "*"' ' + cat >repo/.git/info/sparse-checkout <<-\EOF && + /* + !/*/ + /a* + EOF + check_read_tree_errors repo "a" "disabling cone pattern matching" +' + +test_expect_success 'pattern-checks: starting "*"' ' + cat >repo/.git/info/sparse-checkout <<-\EOF && + /* + !/*/ + *eep/ + EOF + check_read_tree_errors repo "a deep" "disabling cone pattern matching" +' + +test_expect_success 'pattern-checks: contained glob characters' ' + for c in "[a]" "\\" "?" "*" + do + cat >repo/.git/info/sparse-checkout <<-EOF && + /* + !/*/ + something$c-else/ + EOF + check_read_tree_errors repo "a" "disabling cone pattern matching" + done +' + +test_expect_success 'pattern-checks: escaped "*"' ' + cat >repo/.git/info/sparse-checkout <<-\EOF && + /* + !/*/ + /does\*not\*exist/ + EOF + check_read_tree_errors repo "a" "" +' + test_done |