Add support for %include funcionality on torrc #1922

config_get_lines is now split into two functions:
 - config_get_lines which is the same as before we had %include
 - config_get_lines_include which actually processes %include

1 files changed, 35 insertions, 0 deletions

diff --git a/src/common/util.c b/src/common/util.c
index ca2a0c4a9c..5c455585e7 100644
--- a/src/common/util.c
+++ b/src/common/util.c
@@ -3045,6 +3045,41 @@ unescape_string(const char *s, char **result, size_t *size_out)
   }
 }
 
+/** Removes enclosing quotes from <b>path</b> and unescapes quotes between the
+ * enclosing quotes. Backslashes are not unescaped. Return the unquoted
+ * <b>path</b> on sucess or 0 if <b>path</b> is not quoted correctly. */
+char *
+get_unquoted_path(const char *path)
+{
+  int len = strlen(path);
+
+  if (len == 0) {
+    return tor_strdup("");
+  }
+
+  int has_start_quote = (path[0] == '\"');
+  int has_end_quote = (len > 0 && path[len-1] == '\"');
+  if (has_start_quote != has_end_quote || (len == 1 && has_start_quote)) {
+    return NULL;
+  }
+
+  char *unquoted_path = tor_malloc(len - has_start_quote - has_end_quote + 1);
+  char *s = unquoted_path;
+  int i;
+  for (i = has_start_quote; i < len - has_end_quote; i++) {
+    if (path[i] == '\"' && (i > 0 && path[i-1] == '\\')) {
+      *(s-1) = path[i];
+    } else if (path[i] != '\"') {
+      *s++ = path[i];
+    } else {  /* unescaped quote */
+      tor_free(unquoted_path);
+      return NULL;
+    }
+  }
+  *s = '\0';
+  return unquoted_path;
+}
+
 /** Expand any homedir prefix on <b>filename</b>; return a newly allocated
  * string. */
 char *