From f327dbced25a3c6fcc0b84d2d6adffa9343b09f0 Mon Sep 17 00:00:00 2001 From: Mark Wooding Date: Thu, 13 Apr 2006 22:01:24 +0000 Subject: [PATCH] Shell utilities: Guard against expr' magic tokens. Some words, e.g., `match', are special to expr(1), and cause strange parsing effects. Track down all uses of expr and mangle the arguments so that this isn't a problem. Signed-off-by: Mark Wooding Signed-off-by: Junio C Hamano --- git-cherry.sh | 2 +- git-clone.sh | 6 +++--- git-commit.sh | 4 ++-- git-fetch.sh | 18 +++++++++--------- git-format-patch.sh | 4 ++-- git-merge-one-file.sh | 2 +- git-parse-remote.sh | 20 ++++++++++---------- git-rebase.sh | 2 +- git-tag.sh | 2 +- 9 files changed, 30 insertions(+), 30 deletions(-) diff --git a/git-cherry.sh b/git-cherry.sh index 1a6232013..f0e8831fa 100755 --- a/git-cherry.sh +++ b/git-cherry.sh @@ -20,7 +20,7 @@ case "$1" in -v) verbose=t; shift ;; esac case "$#,$1" in 1,*..*) - upstream=$(expr "$1" : '\(.*\)\.\.') ours=$(expr "$1" : '.*\.\.\(.*\)$') + upstream=$(expr "z$1" : 'z\(.*\)\.\.') ours=$(expr "z$1" : '.*\.\.\(.*\)$') set x "$upstream" "$ours" shift ;; esac diff --git a/git-clone.sh b/git-clone.sh index c013e481d..080516805 100755 --- a/git-clone.sh +++ b/git-clone.sh @@ -38,12 +38,12 @@ Perhaps git-update-server-info needs to be run there?" } while read sha1 refname do - name=`expr "$refname" : 'refs/\(.*\)'` && + name=`expr "z$refname" : 'zrefs/\(.*\)'` && case "$name" in *^*) continue;; esac if test -n "$use_separate_remote" && - branch_name=`expr "$name" : 'heads/\(.*\)'` + branch_name=`expr "z$name" : 'zheads/\(.*\)'` then tname="remotes/$origin/$branch_name" else @@ -346,7 +346,7 @@ then # new style repository with a symref HEAD). # Ideally we should skip the guesswork but for now # opt for minimum change. - head_sha1=`expr "$head_sha1" : 'ref: refs/heads/\(.*\)'` + head_sha1=`expr "z$head_sha1" : 'zref: refs/heads/\(.*\)'` head_sha1=`cat "$GIT_DIR/$remote_top/$head_sha1"` ;; esac diff --git a/git-commit.sh b/git-commit.sh index bd3dc71cd..01c73bdd0 100755 --- a/git-commit.sh +++ b/git-commit.sh @@ -549,8 +549,8 @@ fi >>"$GIT_DIR"/COMMIT_EDITMSG # Author if test '' != "$force_author" then - GIT_AUTHOR_NAME=`expr "$force_author" : '\(.*[^ ]\) *<.*'` && - GIT_AUTHOR_EMAIL=`expr "$force_author" : '.*\(<.*\)'` && + GIT_AUTHOR_NAME=`expr "z$force_author" : 'z\(.*[^ ]\) *<.*'` && + GIT_AUTHOR_EMAIL=`expr "z$force_author" : '.*\(<.*\)'` && test '' != "$GIT_AUTHOR_NAME" && test '' != "$GIT_AUTHOR_EMAIL" || die "malformatted --author parameter" diff --git a/git-fetch.sh b/git-fetch.sh index 954901ddc..711650f3b 100755 --- a/git-fetch.sh +++ b/git-fetch.sh @@ -112,7 +112,7 @@ append_fetch_head () { *) note_="$remote_name of " ;; esac - remote_1_=$(expr "$remote_" : '\(.*\)\.git/*$') && + remote_1_=$(expr "z$remote_" : 'z\(.*\)\.git/*$') && remote_="$remote_1_" note_="$note_$remote_" @@ -245,22 +245,22 @@ fetch_main () { # These are relative path from $GIT_DIR, typically starting at refs/ # but may be HEAD - if expr "$ref" : '\.' >/dev/null + if expr "z$ref" : 'z\.' >/dev/null then not_for_merge=t - ref=$(expr "$ref" : '\.\(.*\)') + ref=$(expr "z$ref" : 'z\.\(.*\)') else not_for_merge= fi - if expr "$ref" : '\+' >/dev/null + if expr "z$ref" : 'z\+' >/dev/null then single_force=t - ref=$(expr "$ref" : '\+\(.*\)') + ref=$(expr "z$ref" : 'z\+\(.*\)') else single_force= fi - remote_name=$(expr "$ref" : '\([^:]*\):') - local_name=$(expr "$ref" : '[^:]*:\(.*\)') + remote_name=$(expr "z$ref" : 'z\([^:]*\):') + local_name=$(expr "z$ref" : 'z[^:]*:\(.*\)') rref="$rref$LF$remote_name" @@ -276,7 +276,7 @@ fetch_main () { print "$u"; ' "$remote_name") head=$(curl -nsfL $curl_extra_args "$remote/$remote_name_quoted") && - expr "$head" : "$_x40\$" >/dev/null || + expr "z$head" : "z$_x40\$" >/dev/null || die "Failed to fetch $remote_name from $remote" echo >&2 Fetching "$remote_name from $remote" using http git-http-fetch -v -a "$head" "$remote/" || exit @@ -362,7 +362,7 @@ fetch_main () { break ;; esac done - local_name=$(expr "$found" : '[^:]*:\(.*\)') + local_name=$(expr "z$found" : 'z[^:]*:\(.*\)') append_fetch_head "$sha1" "$remote" \ "$remote_name" "$remote_nick" "$local_name" "$not_for_merge" done diff --git a/git-format-patch.sh b/git-format-patch.sh index 2ebf7e859..c7133bc12 100755 --- a/git-format-patch.sh +++ b/git-format-patch.sh @@ -126,8 +126,8 @@ for revpair do case "$revpair" in ?*..?*) - rev1=`expr "$revpair" : '\(.*\)\.\.'` - rev2=`expr "$revpair" : '.*\.\.\(.*\)'` + rev1=`expr "z$revpair" : 'z\(.*\)\.\.'` + rev2=`expr "z$revpair" : 'z.*\.\.\(.*\)'` ;; *) rev1="$revpair^" diff --git a/git-merge-one-file.sh b/git-merge-one-file.sh index 5349a1c0f..5619409f1 100755 --- a/git-merge-one-file.sh +++ b/git-merge-one-file.sh @@ -26,7 +26,7 @@ case "${1:-.}${2:-.}${3:-.}" in fi if test -f "$4"; then rm -f -- "$4" && - rmdir -p "$(expr "$4" : '\(.*\)/')" 2>/dev/null || : + rmdir -p "$(expr "z$4" : 'z\(.*\)/')" 2>/dev/null || : fi && exec git-update-index --remove -- "$4" ;; diff --git a/git-parse-remote.sh b/git-parse-remote.sh index 63f22818e..65c66d5d7 100755 --- a/git-parse-remote.sh +++ b/git-parse-remote.sh @@ -8,8 +8,8 @@ get_data_source () { case "$1" in */*) # Not so fast. This could be the partial URL shorthand... - token=$(expr "$1" : '\([^/]*\)/') - remainder=$(expr "$1" : '[^/]*/\(.*\)') + token=$(expr "z$1" : 'z\([^/]*\)/') + remainder=$(expr "z$1" : 'z[^/]*/\(.*\)') if test -f "$GIT_DIR/branches/$token" then echo branches-partial @@ -43,8 +43,8 @@ get_remote_url () { branches) sed -e 's/#.*//' "$GIT_DIR/branches/$1" ;; branches-partial) - token=$(expr "$1" : '\([^/]*\)/') - remainder=$(expr "$1" : '[^/]*/\(.*\)') + token=$(expr "z$1" : 'z\([^/]*\)/') + remainder=$(expr "z$1" : 'z[^/]*/\(.*\)') url=$(sed -e 's/#.*//' "$GIT_DIR/branches/$token") echo "$url/$remainder" ;; @@ -77,13 +77,13 @@ canon_refs_list_for_fetch () { force= case "$ref" in +*) - ref=$(expr "$ref" : '\+\(.*\)') + ref=$(expr "z$ref" : 'z\+\(.*\)') force=+ ;; esac - expr "$ref" : '.*:' >/dev/null || ref="${ref}:" - remote=$(expr "$ref" : '\([^:]*\):') - local=$(expr "$ref" : '[^:]*:\(.*\)') + expr "z$ref" : 'z.*:' >/dev/null || ref="${ref}:" + remote=$(expr "z$ref" : 'z\([^:]*\):') + local=$(expr "z$ref" : 'z[^:]*:\(.*\)') case "$remote" in '') remote=HEAD ;; refs/heads/* | refs/tags/* | refs/remotes/*) ;; @@ -97,7 +97,7 @@ canon_refs_list_for_fetch () { *) local="refs/heads/$local" ;; esac - if local_ref_name=$(expr "$local" : 'refs/\(.*\)') + if local_ref_name=$(expr "z$local" : 'zrefs/\(.*\)') then git-check-ref-format "$local_ref_name" || die "* refusing to create funny ref '$local_ref_name' locally" @@ -171,7 +171,7 @@ get_remote_refs_for_fetch () { resolve_alternates () { # original URL (xxx.git) - top_=`expr "$1" : '\([^:]*:/*[^/]*\)/'` + top_=`expr "z$1" : 'z\([^:]*:/*[^/]*\)/'` while read path do case "$path" in diff --git a/git-rebase.sh b/git-rebase.sh index 5956f0654..86dfe9cb9 100755 --- a/git-rebase.sh +++ b/git-rebase.sh @@ -94,7 +94,7 @@ case "$#" in ;; *) branch_name=`git symbolic-ref HEAD` || die "No current branch" - branch_name=`expr "$branch_name" : 'refs/heads/\(.*\)'` + branch_name=`expr "z$branch_name" : 'zrefs/heads/\(.*\)'` ;; esac branch=$(git-rev-parse --verify "${branch_name}^0") || exit diff --git a/git-tag.sh b/git-tag.sh index 76e51ed17..dc6aa9576 100755 --- a/git-tag.sh +++ b/git-tag.sh @@ -75,7 +75,7 @@ git-check-ref-format "tags/$name" || object=$(git-rev-parse --verify --default HEAD "$@") || exit 1 type=$(git-cat-file -t $object) || exit 1 tagger=$(git-var GIT_COMMITTER_IDENT) || exit 1 -: ${username:=$(expr "$tagger" : '\(.*>\)')} +: ${username:=$(expr "z$tagger" : 'z\(.*>\)')} trap 'rm -f "$GIT_DIR"/TAG_TMP* "$GIT_DIR"/TAG_FINALMSG "$GIT_DIR"/TAG_EDITMSG' 0 -- 2.30.2