| -rw-r--r-- | include/opkele/consumer.h | 6 | ||||
| -rw-r--r-- | include/opkele/exception.h | 9 | ||||
| -rw-r--r-- | lib/consumer.cc | 6 |
3 files changed, 18 insertions, 3 deletions
diff --git a/include/opkele/consumer.h b/include/opkele/consumer.h index 50ff692..c463787 100644 --- a/include/opkele/consumer.h +++ b/include/opkele/consumer.h @@ -62,16 +62,21 @@ namespace opkele { * function is not overridden in the real implementation, the new * association will be established for each request. * * @note * The user is responsible for handling associations and this * function should never return an expired or invalidated * association. * + * @note + * It may be a good idea to pre-expire associations shortly before + * their time is really up to avoid association expiry in the + * middle of negotiations. + * * @param server the OpenID server * @return the auto_ptr<> for the newly allocated association_t object * @throw failed_lookup in case of absence of the handle */ virtual assoc_t find_assoc(const string& server); /** * retrieve the metainformation contained in link tags from the @@ -132,16 +137,17 @@ namespace opkele { * @param pin the response parameters * @param identity the identity being checked (if not specified, * @param ext pointer to an extension(s) hooks object * extracted from the openid.identity parameter * @throw id_res_mismatch in case of signature mismatch * @throw id_res_setup in case of openid.user_setup_url failure * (supposedly checkid_immediate only) * @throw id_res_failed in case of failure + * @throw id_res_expired_on_delivery if the association expired before it could've been verified * @throw exception in case of other failures */ virtual void id_res(const params_t& pin,const string& identity="",extension_t *ext=0); /** * perform a check_authentication request. * @param server the OpenID server * @param p request parameters */ diff --git a/include/opkele/exception.h b/include/opkele/exception.h index 753a818..2ff44b7 100644 --- a/include/opkele/exception.h +++ b/include/opkele/exception.h @@ -165,16 +165,25 @@ namespace opkele { */ class id_res_mismatch : public id_res_failed { public: id_res_mismatch(OPKELE_E_PARS) : id_res_failed(OPKELE_E_CONS) { } }; /** + * thrown if the association has expired before it could've been verified. + */ + class id_res_expired_on_delivery : public id_res_failed { + public: + id_res_expired_on_delivery(OPKELE_E_PARS) + : id_res_failed(OPKELE_E_CONS) { } + }; + + /** * openssl malfunction occured */ class exception_openssl : public exception { public: unsigned long _error; string _ssl_string; exception_openssl(OPKELE_E_PARS); ~exception_openssl() throw() { } diff --git a/lib/consumer.cc b/lib/consumer.cc index 66db7dd..9f7530f 100644 --- a/lib/consumer.cc +++ b/lib/consumer.cc @@ -179,18 +179,18 @@ namespace opkele { void consumer_t::id_res(const params_t& pin,const string& identity,extension_t *ext) { if(pin.has_param("openid.user_setup_url")) throw id_res_setup(OPKELE_CP_ "assertion failed, setup url provided",pin.get_param("openid.user_setup_url")); string server,delegate; retrieve_links(identity.empty()?pin.get_param("openid.identity"):canonicalize(identity),server,delegate); params_t ps; try { assoc_t assoc = retrieve_assoc(server,pin.get_param("openid.assoc_handle")); - if(assoc->is_expired()) /* TODO: or should I throw some other exception to force programmer fix his implementation? */ - throw failed_lookup(OPKELE_CP_ "retrieve_assoc() has returned expired handle"); + if(assoc->is_expired()) + throw id_res_expired_on_delivery(OPKELE_CP_ "retrieve_assoc() has returned expired handle"); const string& sigenc = pin.get_param("openid.sig"); vector<unsigned char> sig; util::decode_base64(sigenc,sig); const string& slist = pin.get_param("openid.signed"); string kv; string::size_type p = 0; while(true) { string::size_type co = slist.find(',',p); @@ -209,17 +209,17 @@ namespace opkele { unsigned int md_len = 0; unsigned char *md = HMAC( EVP_sha1(), &(secret.front()),secret.size(), (const unsigned char *)kv.data(),kv.length(), 0,&md_len); if(sig.size()!=md_len || memcmp(&(sig.front()),md,md_len)) throw id_res_mismatch(OPKELE_CP_ "signature mismatch"); - }catch(failed_lookup& e) { /* XXX: more specific? */ + }catch(failed_lookup& e) { const string& slist = pin.get_param("openid.signed"); string::size_type pp = 0; params_t p; while(true) { string::size_type co = slist.find(',',pp); string f = "openid."; f += (co==string::npos)?slist.substr(pp):slist.substr(pp,co-pp); p[f] = pin.get_param(f); |