apache /
httpd /
64ecf00d7c1974450bf8780ed1dd3200396745fa mod_headers: Avoid infinite recursion with the edit* action and empty matches.
Change the recursion used for edit* to a loop using the new ap_regexec_ex()
function taking the current position (offset) in the subject string.
After an empty match do the same thing as pcre2_substitute() (or Perl's /g),
that is: don't allow for another empty match at the same positition by setting
the AP_REG_NOTEMPTY_ATSTART option. If there is a non-empty match use it,
otherwise skip/consume the first character and continue from there.
* modules/metadata/mod_headers.c:
Rename the hdr_edit_r enum for edit* to hdr_edit_all to better express what
is does (and since the action is not recursive anymore).
* modules/metadata/mod_headers.c(push_string, push_match):
New helpers to consume the subject and substitutions in an array of iovec.
* modules/metadata/mod_headers.c(process_regexp):
Implement the new logic, using push_match() and push_string() to fill the
iovec array finally passed to apr_strcatv() for the resulting string.
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1915271 13f79535-47bb-0310-9956-ffa450edef68
2 files changed
