-
-class FilterHeaderRewrite: public mp::filter::Base {
-public:
- void process(mp::Package & package) const {
- Z_GDU *gdu = package.request().get();
- //map of request/response vars
- std::map<std::string, std::string> vars;
- //we have an http req
- if (gdu && gdu->which == Z_GDU_HTTP_Request)
- {
- Z_HTTP_Request *hreq = gdu->u.HTTP_Request;
- mp::odr o;
- //rewrite the request line
- std::string path;
- if (strstr(hreq->path, "http://") == hreq->path)
- {
- std::cout << "Path in the method line is absolute, "
- "possibly a proxy request\n";
- path += hreq->path;
- }
- else
- {
- path += z_HTTP_header_lookup(hreq->headers, "Host");
- path += hreq->path;
- }
- std::cout << "Proxy request URL is " << path << std::endl;
- std::string npath =
- search_replace(vars, path, req_uri_rx, req_uri_pat);
- std::cout << "Resp request URL is " << npath << std::endl;
- if (!npath.empty())
- hreq->path = odr_strdup(o, npath.c_str());
- std::cout << ">> Request headers" << std::endl;
- //iterate headers
- for (Z_HTTP_Header *header = hreq->headers;
- header != 0;
- header = header->next)
- {
- std::cout << header->name << ": " << header->value << std::endl;
- std::string out = search_replace(vars,
- std::string(header->value),
- req_uri_rx, req_uri_pat);
- if (!out.empty())
- header->value = odr_strdup(o, out.c_str());
- }
- package.request() = gdu;
- }
- package.move();
- gdu = package.response().get();
- if (gdu && gdu->which == Z_GDU_HTTP_Response)
- {
- Z_HTTP_Response *hr = gdu->u.HTTP_Response;
- std::cout << "Response " << hr->code;
- std::cout << "<< Respose headers" << std::endl;
- mp::odr o;
- //iterate headers
- for (Z_HTTP_Header *header = hr->headers;
- header != 0;
- header = header->next)
- {
- std::cout << header->name << ": " << header->value << std::endl;
- std::string out = search_replace(vars,
- std::string(header->value),
- resp_uri_rx, resp_uri_pat);
- if (!out.empty())
- header->value = odr_strdup(o, out.c_str());
- }
- package.response() = gdu;
- }
- };
-
- void configure(const xmlNode* ptr, bool test_only, const char *path) {};
-
- const std::string search_replace(
- std::map<std::string, std::string> & vars,
- const std::string txt,
- const std::string & uri_re,
- const std::string & uri_pat) const
- {
- //exec regex against value
- boost::regex re(uri_re);
- boost::smatch what;
- std::string::const_iterator start, end;
- start = txt.begin();
- end = txt.end();
- std::string out;
- while (regex_search(start, end, what, re)) //find next full match
- {
- unsigned i;
- for (i = 1; i < what.size(); ++i)
- {
- //check if the group is named
- std::map<int, std::string>::const_iterator it
- = groups_by_num.find(i);
- if (it != groups_by_num.end())
- { //it is
- std::string name = it->second;
- if (!what[i].str().empty())
- vars[name] = what[i];
- }
-
- }
- //prepare replacement string
- std::string rvalue = sub_vars(uri_pat, vars);
- //rewrite value
- std::string rhvalue = what.prefix().str()
- + rvalue + what.suffix().str();
- std::cout << "! Rewritten '"+what.str(0)+"' to '"+rvalue+"'\n";
- out += rhvalue;
- start = what[0].second; //move search forward
- }
- return out;
- };
-
- static void parse_groups(const std::string & str,
- std::map<int, std::string> & groups_bynum,
- std::map<std::string, int> & groups_byname)