verify_path(): simplify check at the directory boundary

diff --git a/abspath.c b/abspath.c
index c91a29cb298a3ad792ff8745f3e8e0eb28d71678..54899008f828963cdefa7523d82a44588841e82c 100644 (file)
--- a/abspath.c
+++ b/abspath.c
@@ -24,12 +24,16 @@ const char *make_absolute_path(const char *path)
        char *last_elem = NULL;
        struct stat st;
 
+       /* We've already done it */
+       if (path == buf || path == next_buf)
+               return path;
+
        if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
                die ("Too long path: %.*s", 60, path);
 
        while (depth--) {
                if (!is_directory(buf)) {
-                       char *last_slash = strrchr(buf, '/');
+                       char *last_slash = find_last_dir_sep(buf);
                        if (last_slash) {
                                *last_slash = '\0';
                                last_elem = xstrdup(last_slash + 1);
@@ -54,7 +58,7 @@ const char *make_absolute_path(const char *path)
                        if (len + strlen(last_elem) + 2 > PATH_MAX)
                                die ("Too long path name: '%s/%s'",
                                                buf, last_elem);
-                       if (len && buf[len-1] != '/')
+                       if (len && !is_dir_sep(buf[len-1]))
                                buf[len++] = '/';
                        strcpy(buf + len, last_elem);
                        free(last_elem);
@@ -108,10 +112,14 @@ const char *make_nonrelative_path(const char *path)
                if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
                        die("Too long path: %.*s", 60, path);
        } else {
+               size_t len;
+               const char *fmt;
                const char *cwd = get_pwd_cwd();
                if (!cwd)
                        die_errno("Cannot determine the current working directory");
-               if (snprintf(buf, PATH_MAX, "%s/%s", cwd, path) >= PATH_MAX)
+               len = strlen(cwd);
+               fmt = (len > 0 && is_dir_sep(cwd[len-1])) ? "%s%s" : "%s/%s";
+               if (snprintf(buf, PATH_MAX, fmt, cwd, path) >= PATH_MAX)
                        die("Too long path: %.*s", 60, path);
        }
        return buf;