| -rw-r--r-- | include/opkele/association.h | 2 | ||||
| -rw-r--r-- | include/opkele/consumer.h | 19 | ||||
| -rw-r--r-- | lib/consumer.cc | 4 |
3 files changed, 24 insertions, 1 deletions
diff --git a/include/opkele/association.h b/include/opkele/association.h index a8f3915..72eff5b 100644 --- a/include/opkele/association.h +++ b/include/opkele/association.h @@ -48,21 +48,23 @@ namespace opkele { * @param __secret the secret * @param __expires expiration time * @param __stateless statelessness of the assoc_handle */ association(const string& __server, const string& __handle, const string& __assoc_type, const secret_t& __secret, time_t __expires, bool __stateless) : _server(__server), _handle(__handle), _assoc_type(__assoc_type), _secret(__secret), _expires(__expires), _stateless(__stateless) { } virtual string server() const { return _server; } virtual string handle() const { return _handle; } virtual string assoc_type() const { return _assoc_type; } virtual secret_t secret() const { return _secret; } virtual int expires_in() const { return _expires-time(0); } virtual bool stateless() const { return _stateless; } + + virtual bool is_expired() const { return _expires<time(0); } }; } #endif /* __OPKELE_ASSOCIATION_H */ diff --git a/include/opkele/consumer.h b/include/opkele/consumer.h index 042e2d1..b9d1e54 100644 --- a/include/opkele/consumer.h +++ b/include/opkele/consumer.h @@ -1,66 +1,83 @@ #ifndef __OPKELE_CONSUMER_H #define __OPKELE_CONSUMER_H #include <opkele/types.h> #include <opkele/extension.h> /** * @file * @brief OpenID consumer-side functionality */ namespace opkele { /** * implementation of basic consumer functionality + * + * @note + * The consumer uses libcurl internally, which means that if you're using + * libopkele in multithreaded environment you should call curl_global_init + * yourself before spawning any threads. */ class consumer_t { public: /** * store association. The function should be overridden in the real * implementation to provide persistent associations store. * @param server the OpenID server * @param handle association handle * @param secret the secret associated with the server and handle * @param expires_in the number of seconds until the handle is expired * @return the auto_ptr<> for the newly allocated association_t object */ virtual assoc_t store_assoc(const string& server,const string& handle,const secret_t& secret,int expires_in) = 0; /** * retrieve stored association. The function should be overridden * in the real implementation to provide persistent assocations * store. + * + * @note + * The user is responsible for handling associations expiry and + * this function should never return an expired or invalidated + * association. + * * @param server the OpenID server * @param handle association handle * @return the autho_ptr<> for the newly allocated association_t object - * @throw failed_lookup in case of error + * @throw failed_lookup if no unexpired association found */ virtual assoc_t retrieve_assoc(const string& server,const string& handle) = 0; /** * invalidate stored association. The function should be overridden * in the real implementation of the consumer. * @param server the OpenID server * @param handle association handle */ virtual void invalidate_assoc(const string& server,const string& handle) = 0; /** * retrieve any unexpired association for the server. If the * 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. + * * @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 * page pointed by url. the function may implement caching of the * information. * @param url url to harvest for link tags * @param server reference to the string object where to put * openid.server value * @param delegate reference to the string object where to put the * openid.delegate value (if any) */ diff --git a/lib/consumer.cc b/lib/consumer.cc index dd8e150..af309c1 100644 --- a/lib/consumer.cc +++ b/lib/consumer.cc @@ -131,49 +131,53 @@ namespace opkele { params_t p; if(mode==mode_checkid_immediate) p["mode"]="checkid_immediate"; else if(mode==mode_checkid_setup) p["mode"]="checkid_setup"; else throw bad_input(OPKELE_CP_ "unknown checkid_* mode"); string iurl = canonicalize(identity); string server, delegate; retrieve_links(iurl,server,delegate); p["identity"] = delegate.empty()?iurl:delegate; if(!trust_root.empty()) p["trust_root"] = trust_root; p["return_to"] = return_to; try { string ah = find_assoc(server)->handle(); + if(ah->is_expired()) /* TODO: or should I throw some other exception to force programmer fix his implementation? */ + throw failed_lookup(OPKELE_CP_ "find_assoc() has returned expired handle"); p["assoc_handle"] = ah; }catch(failed_lookup& fl) { string ah = associate(server)->handle(); p["assoc_handle"] = ah; } if(ext) ext->checkid_hook(p,identity); return p.append_query(server); } 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"); 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); string f = (co==string::npos)?slist.substr(p):slist.substr(p,co-p); kv += f; kv += ':'; f.insert(0,"openid."); kv += pin.get_param(f); kv += '\n'; if(ext) ps[f.substr(sizeof("openid.")-1)] = pin.get_param(f); if(co==string::npos) |