mirror of
https://github.com/git/git
synced 2024-08-28 12:09:19 +00:00
Merge branch 'ar/maint-mksnpath' into maint
* ar/maint-mksnpath: Use git_pathdup instead of xstrdup(git_path(...)) git_pathdup: returns xstrdup-ed copy of the formatted path Fix potentially dangerous use of git_path in ref.c Add git_snpath: a .git path formatting routine with output buffer Fix potentially dangerous uses of mkpath and git_path Fix mkpath abuse in dwim_ref and dwim_log of sha1_name.c Add mksnpath which allows you to specify the output buffer Conflicts: builtin-revert.c rerere.c
This commit is contained in:
commit
8b1981d32b
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@ -2850,8 +2850,8 @@ static void create_one_file(char *path, unsigned mode, const char *buf, unsigned
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unsigned int nr = getpid();
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unsigned int nr = getpid();
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for (;;) {
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for (;;) {
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const char *newpath;
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char newpath[PATH_MAX];
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newpath = mkpath("%s~%u", path, nr);
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mksnpath(newpath, sizeof(newpath), "%s~%u", path, nr);
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if (!try_create_file(newpath, mode, buf, size)) {
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if (!try_create_file(newpath, mode, buf, size)) {
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if (!rename(newpath, path))
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if (!rename(newpath, path))
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return;
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return;
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@ -84,7 +84,7 @@ static int get_value(const char* key_, const char* regex_)
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local = config_exclusive_filename;
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local = config_exclusive_filename;
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if (!local) {
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if (!local) {
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const char *home = getenv("HOME");
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const char *home = getenv("HOME");
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local = repo_config = xstrdup(git_path("config"));
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local = repo_config = git_pathdup("config");
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if (git_config_global() && home)
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if (git_config_global() && home)
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global = xstrdup(mkpath("%s/.gitconfig", home));
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global = xstrdup(mkpath("%s/.gitconfig", home));
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if (git_config_system())
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if (git_config_system())
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@ -277,11 +277,11 @@ static int expire_reflog(const char *ref, const unsigned char *sha1, int unused,
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lock = lock_any_ref_for_update(ref, sha1, 0);
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lock = lock_any_ref_for_update(ref, sha1, 0);
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if (!lock)
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if (!lock)
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return error("cannot lock ref '%s'", ref);
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return error("cannot lock ref '%s'", ref);
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log_file = xstrdup(git_path("logs/%s", ref));
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log_file = git_pathdup("logs/%s", ref);
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if (!file_exists(log_file))
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if (!file_exists(log_file))
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goto finish;
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goto finish;
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if (!cmd->dry_run) {
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if (!cmd->dry_run) {
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newlog_path = xstrdup(git_path("logs/%s.lock", ref));
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newlog_path = git_pathdup("logs/%s.lock", ref);
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cb.newlog = fopen(newlog_path, "w");
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cb.newlog = fopen(newlog_path, "w");
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}
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}
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@ -269,7 +269,7 @@ static int revert_or_cherry_pick(int argc, const char **argv)
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int i;
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int i;
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char *oneline, *reencoded_message = NULL;
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char *oneline, *reencoded_message = NULL;
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const char *message, *encoding;
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const char *message, *encoding;
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char *defmsg = xstrdup(git_path("MERGE_MSG"));
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char *defmsg = git_pathdup("MERGE_MSG");
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git_config(git_default_config, NULL);
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git_config(git_default_config, NULL);
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me = action == REVERT ? "revert" : "cherry-pick";
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me = action == REVERT ? "revert" : "cherry-pick";
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@ -283,7 +283,7 @@ static void create_tag(const unsigned char *object, const char *tag,
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int fd;
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int fd;
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/* write the template message before editing: */
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/* write the template message before editing: */
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path = xstrdup(git_path("TAG_EDITMSG"));
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path = git_pathdup("TAG_EDITMSG");
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fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
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fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
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if (fd < 0)
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if (fd < 0)
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die("could not create file '%s': %s",
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die("could not create file '%s': %s",
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7
cache.h
7
cache.h
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@ -484,6 +484,13 @@ extern int check_repository_format(void);
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#define DATA_CHANGED 0x0020
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#define DATA_CHANGED 0x0020
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#define TYPE_CHANGED 0x0040
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#define TYPE_CHANGED 0x0040
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extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
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__attribute__((format (printf, 3, 4)));
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extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
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__attribute__((format (printf, 3, 4)));
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extern char *git_pathdup(const char *fmt, ...)
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__attribute__((format (printf, 1, 2)));
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/* Return a statically allocated filename matching the sha1 signature */
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/* Return a statically allocated filename matching the sha1 signature */
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extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
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extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
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extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
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extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
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6
config.c
6
config.c
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@ -630,7 +630,7 @@ int git_config(config_fn_t fn, void *data)
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free(user_config);
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free(user_config);
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}
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}
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repo_config = xstrdup(git_path("config"));
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repo_config = git_pathdup("config");
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ret += git_config_from_file(fn, repo_config, data);
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ret += git_config_from_file(fn, repo_config, data);
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free(repo_config);
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free(repo_config);
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return ret;
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return ret;
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@ -872,7 +872,7 @@ int git_config_set_multivar(const char* key, const char* value,
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if (config_exclusive_filename)
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if (config_exclusive_filename)
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config_filename = xstrdup(config_exclusive_filename);
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config_filename = xstrdup(config_exclusive_filename);
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else
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else
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config_filename = xstrdup(git_path("config"));
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config_filename = git_pathdup("config");
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/*
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/*
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* Since "key" actually contains the section name and the real
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* Since "key" actually contains the section name and the real
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@ -1132,7 +1132,7 @@ int git_config_rename_section(const char *old_name, const char *new_name)
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if (config_exclusive_filename)
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if (config_exclusive_filename)
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config_filename = xstrdup(config_exclusive_filename);
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config_filename = xstrdup(config_exclusive_filename);
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else
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else
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config_filename = xstrdup(git_path("config"));
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config_filename = git_pathdup("config");
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out_fd = hold_lock_file_for_update(lock, config_filename, 0);
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out_fd = hold_lock_file_for_update(lock, config_filename, 0);
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if (out_fd < 0) {
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if (out_fd < 0) {
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ret = error("could not lock config file %s", config_filename);
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ret = error("could not lock config file %s", config_filename);
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@ -71,7 +71,7 @@ static void setup_git_env(void)
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}
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}
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git_graft_file = getenv(GRAFT_ENVIRONMENT);
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git_graft_file = getenv(GRAFT_ENVIRONMENT);
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if (!git_graft_file)
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if (!git_graft_file)
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git_graft_file = xstrdup(git_path("info/grafts"));
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git_graft_file = git_pathdup("info/grafts");
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}
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}
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int is_bare_repository(void)
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int is_bare_repository(void)
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54
path.c
54
path.c
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@ -32,6 +32,60 @@ static char *cleanup_path(char *path)
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return path;
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return path;
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}
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}
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char *mksnpath(char *buf, size_t n, const char *fmt, ...)
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{
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va_list args;
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unsigned len;
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va_start(args, fmt);
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len = vsnprintf(buf, n, fmt, args);
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va_end(args);
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if (len >= n) {
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snprintf(buf, n, bad_path);
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return buf;
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}
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return cleanup_path(buf);
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}
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static char *git_vsnpath(char *buf, size_t n, const char *fmt, va_list args)
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{
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const char *git_dir = get_git_dir();
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size_t len;
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len = strlen(git_dir);
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if (n < len + 1)
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goto bad;
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memcpy(buf, git_dir, len);
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if (len && !is_dir_sep(git_dir[len-1]))
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buf[len++] = '/';
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len += vsnprintf(buf + len, n - len, fmt, args);
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if (len >= n)
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goto bad;
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return cleanup_path(buf);
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bad:
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snprintf(buf, n, bad_path);
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return buf;
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}
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char *git_snpath(char *buf, size_t n, const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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(void)git_vsnpath(buf, n, fmt, args);
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va_end(args);
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return buf;
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}
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char *git_pathdup(const char *fmt, ...)
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{
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char path[PATH_MAX];
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va_list args;
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va_start(args, fmt);
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(void)git_vsnpath(path, sizeof(path), fmt, args);
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va_end(args);
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return xstrdup(path);
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}
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char *mkpath(const char *fmt, ...)
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char *mkpath(const char *fmt, ...)
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{
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{
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va_list args;
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va_list args;
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10
refs.c
10
refs.c
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@ -401,7 +401,7 @@ const char *resolve_ref(const char *ref, unsigned char *sha1, int reading, int *
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*flag = 0;
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*flag = 0;
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for (;;) {
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for (;;) {
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const char *path = git_path("%s", ref);
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char path[PATH_MAX];
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struct stat st;
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struct stat st;
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char *buf;
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char *buf;
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int fd;
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int fd;
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@ -409,6 +409,7 @@ const char *resolve_ref(const char *ref, unsigned char *sha1, int reading, int *
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if (--depth < 0)
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if (--depth < 0)
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return NULL;
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return NULL;
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git_snpath(path, sizeof(path), "%s", ref);
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/* Special case: non-existing file.
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/* Special case: non-existing file.
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* Not having the refs/heads/new-branch is OK
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* Not having the refs/heads/new-branch is OK
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* if we are writing into it, so is .git/HEAD
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* if we are writing into it, so is .git/HEAD
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@ -1136,13 +1137,14 @@ static int log_ref_write(const char *ref_name, const unsigned char *old_sha1,
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int logfd, written, oflags = O_APPEND | O_WRONLY;
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int logfd, written, oflags = O_APPEND | O_WRONLY;
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unsigned maxlen, len;
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unsigned maxlen, len;
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int msglen;
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int msglen;
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char *log_file, *logrec;
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char log_file[PATH_MAX];
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char *logrec;
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const char *committer;
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const char *committer;
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if (log_all_ref_updates < 0)
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if (log_all_ref_updates < 0)
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log_all_ref_updates = !is_bare_repository();
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log_all_ref_updates = !is_bare_repository();
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log_file = git_path("logs/%s", ref_name);
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git_snpath(log_file, sizeof(log_file), "logs/%s", ref_name);
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if (log_all_ref_updates &&
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if (log_all_ref_updates &&
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(!prefixcmp(ref_name, "refs/heads/") ||
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(!prefixcmp(ref_name, "refs/heads/") ||
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@ -1271,7 +1273,7 @@ int create_symref(const char *ref_target, const char *refs_heads_master,
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const char *lockpath;
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const char *lockpath;
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char ref[1000];
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char ref[1000];
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int fd, len, written;
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int fd, len, written;
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char *git_HEAD = xstrdup(git_path("%s", ref_target));
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char *git_HEAD = git_pathdup("%s", ref_target);
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unsigned char old_sha1[20], new_sha1[20];
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unsigned char old_sha1[20], new_sha1[20];
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if (logmsg && read_ref(ref_target, old_sha1))
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if (logmsg && read_ref(ref_target, old_sha1))
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2
rerere.c
2
rerere.c
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@ -345,7 +345,7 @@ int setup_rerere(struct string_list *merge_rr)
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if (!is_rerere_enabled())
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if (!is_rerere_enabled())
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return -1;
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return -1;
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merge_rr_path = xstrdup(git_path("MERGE_RR"));
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merge_rr_path = git_pathdup("MERGE_RR");
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fd = hold_lock_file_for_update(&write_lock, merge_rr_path,
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fd = hold_lock_file_for_update(&write_lock, merge_rr_path,
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LOCK_DIE_ON_ERROR);
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LOCK_DIE_ON_ERROR);
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read_rr(merge_rr);
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read_rr(merge_rr);
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@ -25,7 +25,7 @@ static int add_info_ref(const char *path, const unsigned char *sha1, int flag, v
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static int update_info_refs(int force)
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static int update_info_refs(int force)
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{
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{
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char *path0 = xstrdup(git_path("info/refs"));
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char *path0 = git_pathdup("info/refs");
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int len = strlen(path0);
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int len = strlen(path0);
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char *path1 = xmalloc(len + 2);
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char *path1 = xmalloc(len + 2);
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@ -245,11 +245,13 @@ int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref)
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*ref = NULL;
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*ref = NULL;
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for (p = ref_rev_parse_rules; *p; p++) {
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for (p = ref_rev_parse_rules; *p; p++) {
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char fullref[PATH_MAX];
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unsigned char sha1_from_ref[20];
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unsigned char sha1_from_ref[20];
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unsigned char *this_result;
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unsigned char *this_result;
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|
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this_result = refs_found ? sha1_from_ref : sha1;
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this_result = refs_found ? sha1_from_ref : sha1;
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r = resolve_ref(mkpath(*p, len, str), this_result, 1, NULL);
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mksnpath(fullref, sizeof(fullref), *p, len, str);
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r = resolve_ref(fullref, this_result, 1, NULL);
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if (r) {
|
if (r) {
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if (!refs_found++)
|
if (!refs_found++)
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*ref = xstrdup(r);
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*ref = xstrdup(r);
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@ -272,7 +274,7 @@ int dwim_log(const char *str, int len, unsigned char *sha1, char **log)
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char path[PATH_MAX];
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char path[PATH_MAX];
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const char *ref, *it;
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const char *ref, *it;
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|
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strcpy(path, mkpath(*p, len, str));
|
mksnpath(path, sizeof(path), *p, len, str);
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ref = resolve_ref(path, hash, 1, NULL);
|
ref = resolve_ref(path, hash, 1, NULL);
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if (!ref)
|
if (!ref)
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||||||
continue;
|
continue;
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||||||
|
|
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