Function FindAuthenticityToken

libs/editor/osm_auth.cpp:23–40

string FindAuthenticityToken(string const & action, string body)
{
  static boost::regex const kActionAndTokenRE(R"~(action="(.+?)".*?name="authenticity_token" value="(.+?)")~");

  // Regex doesn't support multiline matches. Need to remove all line endings from the body.
  std::erase_if(body, [](char c) { return c == '\n' || c == '\r'; });

  auto const begin = boost::sregex_iterator{body.begin(), body.end(), kActionAndTokenRE};
  auto const end = boost::sregex_iterator{};

  for (auto it = begin; it != end; ++it)
  {
    auto const match = *it;
    if (match.size() == 3 && match[1] == action)
      return match[2];
  }
  MYTHROW(OsmOAuth::AuthenticityTokenNotFound, ("authenticity_token for action", action, "was not found in", body));
}

// Parse URL in format "{OSM_OAUTH2_REDIRECT_URI}?code=XXXX". Extract code value
string FindOauthCode(string const & redirectUri)