From 4aad2f1627bb74948874c0f31e8ce256bf236aa6 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= Date: Wed, 5 Apr 2017 17:24:38 +0700 Subject: path.c: and an option to call real_path() in expand_user_path() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In the next patch we need the ability to expand '~' to real_path($HOME). But we can't do that from outside because '~' is part of a pattern, not a true path. Add an option to expand_user_path() to do so. Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano --- builtin/commit.c | 2 +- builtin/config.c | 2 +- cache.h | 2 +- config.c | 8 ++++---- credential-cache.c | 2 +- credential-store.c | 2 +- path.c | 11 ++++++++--- 7 files changed, 17 insertions(+), 12 deletions(-) diff --git a/builtin/commit.c b/builtin/commit.c index 2de5f6cc64..4b0fc0eae1 100644 --- a/builtin/commit.c +++ b/builtin/commit.c @@ -1404,7 +1404,7 @@ int cmd_status(int argc, const char **argv, const char *prefix) static const char *implicit_ident_advice(void) { - char *user_config = expand_user_path("~/.gitconfig"); + char *user_config = expand_user_path("~/.gitconfig", 0); char *xdg_config = xdg_config_home("config"); int config_exists = file_exists(user_config) || file_exists(xdg_config); diff --git a/builtin/config.c b/builtin/config.c index 05843a0f96..70bfaaaa1d 100644 --- a/builtin/config.c +++ b/builtin/config.c @@ -502,7 +502,7 @@ int cmd_config(int argc, const char **argv, const char *prefix) } if (use_global_config) { - char *user_config = expand_user_path("~/.gitconfig"); + char *user_config = expand_user_path("~/.gitconfig", 0); char *xdg_config = xdg_config_home("config"); if (!user_config) diff --git a/cache.h b/cache.h index 61fc86e6d7..bf6eb39cbf 100644 --- a/cache.h +++ b/cache.h @@ -1098,7 +1098,7 @@ enum scld_error safe_create_leading_directories(char *path); enum scld_error safe_create_leading_directories_const(const char *path); int mkdir_in_gitdir(const char *path); -extern char *expand_user_path(const char *path); +extern char *expand_user_path(const char *path, int real_home); const char *enter_repo(const char *path, int strict); static inline int is_absolute_path(const char *path) { diff --git a/config.c b/config.c index 0dac0f4cb2..3da3a50e10 100644 --- a/config.c +++ b/config.c @@ -135,7 +135,7 @@ static int handle_path_include(const char *path, struct config_include_data *inc if (!path) return config_error_nonbool("include.path"); - expanded = expand_user_path(path); + expanded = expand_user_path(path, 0); if (!expanded) return error("could not expand include path '%s'", path); path = expanded; @@ -177,7 +177,7 @@ static int prepare_include_condition_pattern(struct strbuf *pat) char *expanded; int prefix = 0; - expanded = expand_user_path(pat->buf); + expanded = expand_user_path(pat->buf, 0); if (expanded) { strbuf_reset(pat); strbuf_addstr(pat, expanded); @@ -857,7 +857,7 @@ int git_config_pathname(const char **dest, const char *var, const char *value) { if (!value) return config_error_nonbool(var); - *dest = expand_user_path(value); + *dest = expand_user_path(value, 0); if (!*dest) die(_("failed to expand user dir in: '%s'"), value); return 0; @@ -1407,7 +1407,7 @@ static int do_git_config_sequence(config_fn_t fn, void *data) { int ret = 0; char *xdg_config = xdg_config_home("config"); - char *user_config = expand_user_path("~/.gitconfig"); + char *user_config = expand_user_path("~/.gitconfig", 0); char *repo_config = have_git_dir() ? git_pathdup("config") : NULL; current_parsing_scope = CONFIG_SCOPE_SYSTEM; diff --git a/credential-cache.c b/credential-cache.c index cc8a6ee192..774d1469fb 100644 --- a/credential-cache.c +++ b/credential-cache.c @@ -106,7 +106,7 @@ int cmd_main(int argc, const char **argv) op = argv[0]; if (!socket_path) - socket_path = expand_user_path("~/.git-credential-cache/socket"); + socket_path = expand_user_path("~/.git-credential-cache/socket", 0); if (!socket_path) die("unable to find a suitable socket path; use --socket"); diff --git a/credential-store.c b/credential-store.c index 55ca1b1334..ac295420dd 100644 --- a/credential-store.c +++ b/credential-store.c @@ -168,7 +168,7 @@ int cmd_main(int argc, const char **argv) if (file) { string_list_append(&fns, file); } else { - if ((file = expand_user_path("~/.git-credentials"))) + if ((file = expand_user_path("~/.git-credentials", 0))) string_list_append_nodup(&fns, file); file = xdg_config_home("credentials"); if (file) diff --git a/path.c b/path.c index efcedafba6..8b7687d53a 100644 --- a/path.c +++ b/path.c @@ -638,8 +638,10 @@ static struct passwd *getpw_str(const char *username, size_t len) * Return a string with ~ and ~user expanded via getpw*. If buf != NULL, * then it is a newly allocated string. Returns NULL on getpw failure or * if path is NULL. + * + * If real_home is true, real_path($HOME) is used in the expansion. */ -char *expand_user_path(const char *path) +char *expand_user_path(const char *path, int real_home) { struct strbuf user_path = STRBUF_INIT; const char *to_copy = path; @@ -654,7 +656,10 @@ char *expand_user_path(const char *path) const char *home = getenv("HOME"); if (!home) goto return_null; - strbuf_addstr(&user_path, home); + if (real_home) + strbuf_addstr(&user_path, real_path(home)); + else + strbuf_addstr(&user_path, home); #ifdef GIT_WINDOWS_NATIVE convert_slashes(user_path.buf); #endif @@ -723,7 +728,7 @@ const char *enter_repo(const char *path, int strict) strbuf_add(&validated_path, path, len); if (used_path.buf[0] == '~') { - char *newpath = expand_user_path(used_path.buf); + char *newpath = expand_user_path(used_path.buf, 0); if (!newpath) return NULL; strbuf_attach(&used_path, newpath, strlen(newpath), -- cgit v1.2.3 From 86f951570839e241cfa8effbe195674193693a7f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= Date: Wed, 5 Apr 2017 17:24:39 +0700 Subject: config: resolve symlinks in conditional include's patterns MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit $GIT_DIR returned by get_git_dir() is normalized, with all symlinks resolved (see setup_work_tree function). In order to match paths (or patterns) against $GIT_DIR char-by-char, they have to be normalized too. There is a note in config.txt about this, that the user need to resolve symlinks by themselves if needed. The problem is, we allow certain path expansion, '~/' and './', for convenience and can't ask the user to resolve symlinks in these expansions. Make sure the expanded paths have all symlinks resolved. PS. The strbuf_realpath(&text, get_git_dir(), 1) is still needed because get_git_dir() may return relative path. Noticed-by: Torsten Bögershausen Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano --- config.c | 6 +++--- t/t1305-config-include.sh | 54 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 57 insertions(+), 3 deletions(-) diff --git a/config.c b/config.c index 3da3a50e10..12b1b6261e 100644 --- a/config.c +++ b/config.c @@ -177,7 +177,7 @@ static int prepare_include_condition_pattern(struct strbuf *pat) char *expanded; int prefix = 0; - expanded = expand_user_path(pat->buf, 0); + expanded = expand_user_path(pat->buf, 1); if (expanded) { strbuf_reset(pat); strbuf_addstr(pat, expanded); @@ -191,7 +191,7 @@ static int prepare_include_condition_pattern(struct strbuf *pat) return error(_("relative config include " "conditionals must come from files")); - strbuf_add_absolute_path(&path, cf->path); + strbuf_realpath(&path, cf->path, 1); slash = find_last_dir_sep(path.buf); if (!slash) die("BUG: how is this possible?"); @@ -213,7 +213,7 @@ static int include_by_gitdir(const char *cond, size_t cond_len, int icase) struct strbuf pattern = STRBUF_INIT; int ret = 0, prefix; - strbuf_add_absolute_path(&text, get_git_dir()); + strbuf_realpath(&text, get_git_dir(), 1); strbuf_add(&pattern, cond, cond_len); prefix = prepare_include_condition_pattern(&pattern); diff --git a/t/t1305-config-include.sh b/t/t1305-config-include.sh index e833939320..8fbc7a029f 100755 --- a/t/t1305-config-include.sh +++ b/t/t1305-config-include.sh @@ -3,6 +3,16 @@ test_description='test config file include directives' . ./test-lib.sh +# Force setup_explicit_git_dir() to run until the end. This is needed +# by some tests to make sure real_path() is called on $GIT_DIR. The +# caller needs to make sure git commands are run from a subdirectory +# though or real_path() will not be called. +force_setup_explicit_git_dir() { + GIT_DIR="$(pwd)/.git" + GIT_WORK_TREE="$(pwd)" + export GIT_DIR GIT_WORK_TREE +} + test_expect_success 'include file by absolute path' ' echo "[test]one = 1" >one && echo "[include]path = \"$(pwd)/one\"" >.gitconfig && @@ -208,6 +218,50 @@ test_expect_success 'conditional include, both unanchored, icase' ' ) ' +test_expect_success SYMLINKS 'conditional include, set up symlinked $HOME' ' + mkdir real-home && + ln -s real-home home && + ( + HOME="$TRASH_DIRECTORY/home" && + export HOME && + cd "$HOME" && + + git init foo && + cd foo && + mkdir sub + ) +' + +test_expect_success SYMLINKS 'conditional include, $HOME expansion with symlinks' ' + ( + HOME="$TRASH_DIRECTORY/home" && + export HOME && + cd "$HOME"/foo && + + echo "[includeIf \"gitdir:~/foo/\"]path=bar2" >>.git/config && + echo "[test]two=2" >.git/bar2 && + echo 2 >expect && + force_setup_explicit_git_dir && + git -C sub config test.two >actual && + test_cmp expect actual + ) +' + +test_expect_success SYMLINKS 'conditional include, relative path with symlinks' ' + echo "[includeIf \"gitdir:./foo/.git\"]path=bar4" >home/.gitconfig && + echo "[test]four=4" >home/bar4 && + ( + HOME="$TRASH_DIRECTORY/home" && + export HOME && + cd "$HOME"/foo && + + echo 4 >expect && + force_setup_explicit_git_dir && + git -C sub config test.four >actual && + test_cmp expect actual + ) +' + test_expect_success 'include cycles are detected' ' cat >.gitconfig <<-\EOF && [test]value = gitconfig -- cgit v1.2.3