From e36f009e69b68a82f216f9633f99198421a67f12 Mon Sep 17 00:00:00 2001 From: Usman Akinyemi Date: Thu, 24 Oct 2024 00:24:57 +0000 Subject: [PATCH] merge: replace atoi() with strtol_i() for marker size validation Replace atoi() with strtol_i() for parsing conflict-marker-size to improve error handling. Invalid values, such as those containing letters now trigger a clear error message. Update the test to verify invalid input handling. Signed-off-by: Usman Akinyemi Signed-off-by: Taylor Blau --- merge-ll.c | 11 +++++++++-- t/t6406-merge-attr.sh | 8 ++++++++ 2 files changed, 17 insertions(+), 2 deletions(-) diff --git a/merge-ll.c b/merge-ll.c index 8e63071922..62fc625552 100644 --- a/merge-ll.c +++ b/merge-ll.c @@ -15,6 +15,7 @@ #include "merge-ll.h" #include "quote.h" #include "strbuf.h" +#include "gettext.h" struct ll_merge_driver; @@ -427,7 +428,10 @@ enum ll_merge_result ll_merge(mmbuffer_t *result_buf, git_check_attr(istate, path, check); ll_driver_name = check->items[0].value; if (check->items[1].value) { - marker_size = atoi(check->items[1].value); + if (strtol_i(check->items[1].value, 10, &marker_size)) { + marker_size = DEFAULT_CONFLICT_MARKER_SIZE; + warning(_("invalid marker-size '%s', expecting an integer"), check->items[1].value); + } if (marker_size <= 0) marker_size = DEFAULT_CONFLICT_MARKER_SIZE; } @@ -454,7 +458,10 @@ int ll_merge_marker_size(struct index_state *istate, const char *path) check = attr_check_initl("conflict-marker-size", NULL); git_check_attr(istate, path, check); if (check->items[0].value) { - marker_size = atoi(check->items[0].value); + if (strtol_i(check->items[0].value, 10, &marker_size)) { + marker_size = DEFAULT_CONFLICT_MARKER_SIZE; + warning(_("invalid marker-size '%s', expecting an integer"), check->items[0].value); + } if (marker_size <= 0) marker_size = DEFAULT_CONFLICT_MARKER_SIZE; } diff --git a/t/t6406-merge-attr.sh b/t/t6406-merge-attr.sh index 9bf9524934..2dfc9a873d 100755 --- a/t/t6406-merge-attr.sh +++ b/t/t6406-merge-attr.sh @@ -118,6 +118,14 @@ test_expect_success 'retry the merge with longer context' ' grep "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<" actual ' +test_expect_success 'invalid conflict-marker-size 3a' ' + cp .gitattributes .gitattributes.bak && + echo "text conflict-marker-size=3a" >>.gitattributes && + test_when_finished "mv .gitattributes.bak .gitattributes" && + git checkout -m text 2>err && + test_grep "warning: invalid marker-size ${SQ}3a${SQ}, expecting an integer" err +' + test_expect_success 'custom merge backend' ' echo "* merge=union" >.gitattributes &&