moved util::canonicalize_url to consumer class

4 files changed, 29 insertions, 28 deletions

diff --git a/include/opkele/consumer.h b/include/opkele/consumer.h
index b9c29bd..3c0ed5f 100644
--- a/include/opkele/consumer.h
+++ b/include/opkele/consumer.h
@@ -83,53 +83,55 @@ namespace opkele {
              * @param return_to the return_to url to pass with the request
              * @param trust_root the trust root to advertise with the request
              * @return the location string
              * @throw exception in case of error
              */
             string checkid_immediate(const string& identity,const string& return_to,const string& trust_root="");
             /**
              * prepare the parameters for the checkid_setup
              * request.
              * @param identity the identity to verify
              * @param return_to the return_to url to pass with the request
              * @param trust_root the trust root to advertise with the request
              * @return the location string
              * @throw exception in case of error
              */
             string checkid_setup(const string& identity,const string& return_to,const string& trust_root="");
             /**
              * the actual implementation behind checkid_immediate() and
              * checkid_setup() functions.
              * @param mode checkid_* mode - either mode_checkid_immediate or mode_checkid_setup
              * @param identity the identity to verify
              * @param return_to the return_to url to pass with the request
              * @param trust_root the trust root to advertise with the request
              * @return the location string
              * @throw exception in case of error
              */
             string checkid_(mode_t mode,const string& identity,const string& return_to,const string& trust_root="");
             /**
              * verify the id_res response
              * @param pin the response parameters
              * @param identity the identity being checked (if not specified, 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 exception in case of other failures
              */
             void id_res(const params_t& pin,const string& identity="");
             /**
              * perform a check_authentication request.
              * @param server the OpenID server
              * @param p request parameters
              */
             void check_authentication(const string& server,const params_t& p);
 
+            static string canonicalize(const string& url);
+
     };
 
 }
 
 #endif /* __OPKELE_CONSUMER_H */
diff --git a/include/opkele/util.h b/include/opkele/util.h
index fbbef93..5372498 100644
--- a/include/opkele/util.h
+++ b/include/opkele/util.h
@@ -3,58 +3,57 @@
 
 #include <time.h>
 #include <string>
 #include <openssl/bn.h>
 #include <openssl/dh.h>
 
 namespace opkele {
     using std::string;
 
     namespace util {
 
         class bignum_t {
             public:
                 BIGNUM *_bn;
 
                 bignum_t() : _bn(0) { }
                 bignum_t(BIGNUM *bn) : _bn(bn) { }
                 ~bignum_t() throw() { if(_bn) BN_free(_bn); }
                 
                 bignum_t& operator=(BIGNUM *bn) { if(_bn) BN_free(_bn); _bn = bn; return *this; }
 
                 operator const BIGNUM*(void) const { return _bn; }
                 operator BIGNUM*(void) { return _bn; }
         };
         class dh_t {
             public:
                 DH *_dh;
                 
                 dh_t() : _dh(0) { }
                 dh_t(DH *dh) : _dh(dh) { }
                 ~dh_t() throw() { if(_dh) DH_free(_dh); }
 
                 dh_t& operator=(DH *dh) { if(_dh) DH_free(_dh); _dh = dh; return *this; }
 
                 operator const DH*(void) const { return _dh; }
                 operator DH*(void) { return _dh; }
 
                 DH* operator->() { return _dh; }
                 const DH* operator->() const { return _dh; }
         };
 
         BIGNUM *base64_to_bignum(const string& b64);
         BIGNUM *dec_to_bignum(const string& dec);
         string bignum_to_base64(const BIGNUM *bn);
 
         string time_to_w3c(time_t t);
         time_t w3c_to_time(const string& w);
 
-        string canonicalize_url(const string& url);
         string url_encode(const string& str);
 
         string long_to_string(long l);
         long string_to_long(const string& s);
     }
 
 }
 
 #endif /* __OPKELE_UTIL_H */
diff --git a/lib/consumer.cc b/lib/consumer.cc
index bd76b61..cbe0769 100644
--- a/lib/consumer.cc
+++ b/lib/consumer.cc
@@ -92,120 +92,120 @@ namespace opkele {
             throw exception_curl(OPKELE_CP_ "failed to curl_easy_perform()",r);
         params_t p; p.parse_keyvalues(response);
         if(p.has_param("assoc_type") && p.get_param("assoc_type")!="HMAC-SHA1")
             throw bad_input(OPKELE_CP_ "unsupported assoc_type");
         string st;
         if(p.has_param("session_type")) st = p.get_param("session_type");
         if((!st.empty()) && st!="DH-SHA1")
             throw bad_input(OPKELE_CP_ "unsupported session_type");
         secret_t secret;
         if(st.empty()) {
             secret.from_base64(p.get_param("mac_key"));
         }else{
             util::bignum_t s_pub = util::base64_to_bignum(p.get_param("dh_server_public"));
             vector<unsigned char> ck(DH_size(dh));
             int cklen = DH_compute_key(&(ck.front()),s_pub,dh);
             if(cklen<0)
                 throw exception_openssl(OPKELE_CP_ "failed to DH_compute_key()");
             ck.resize(cklen);
             // OpenID algorithm requires extra zero in case of set bit here
             if(ck[0]&0x80) ck.insert(ck.begin(),1,0);
             unsigned char key_sha1[SHA_DIGEST_LENGTH];
             SHA1(&(ck.front()),ck.size(),key_sha1);
             secret.enxor_from_base64(key_sha1,p.get_param("enc_mac_key"));
         }
         int expires_in = 0;
         if(p.has_param("expires_in")) {
             expires_in = util::string_to_long(p.get_param("expires_in"));
         }else if(p.has_param("issued") && p.has_param("expiry")) {
             expires_in = util::w3c_to_time(p.get_param("expiry"))-util::w3c_to_time(p.get_param("issued"));
         }else
             throw bad_input(OPKELE_CP_ "no expiration information");
         return store_assoc(server,p.get_param("assoc_handle"),secret,expires_in);
     }
 
     string consumer_t::checkid_immediate(const string& identity,const string& return_to,const string& trust_root) {
         return checkid_(mode_checkid_immediate,identity,return_to,trust_root);
     }
     string consumer_t::checkid_setup(const string& identity,const string& return_to,const string& trust_root) {
         return checkid_(mode_checkid_setup,identity,return_to,trust_root);
     }
     string consumer_t::checkid_(mode_t mode,const string& identity,const string& return_to,const string& trust_root) {
         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 = util::canonicalize_url(identity);
+        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 {
             try {
                 string ah = find_assoc(server)->handle();
                 p["assoc_handle"] = ah;
             }catch(failed_lookup& fl) {
                 string ah = associate(server)->handle();
                 p["assoc_handle"] = ah;
             }
         }catch(exception& e) { }
         return p.append_query(server);
     }
 
     void consumer_t::id_res(const params_t& pin,const string& identity) {
         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"):util::canonicalize_url(identity),server,delegate);
+        retrieve_links(identity.empty()?pin.get_param("openid.identity"):canonicalize(identity),server,delegate);
         try {
             assoc_t assoc = retrieve_assoc(server,pin.get_param("openid.assoc_handle"));
             const string& sigenc = pin.get_param("openid.sig");
             mimetic::Base64::Decoder b;
             vector<unsigned char> sig;
             mimetic::decode(
                     sigenc.begin(),sigenc.end(), b,
                     back_insert_iterator<vector<unsigned char> >(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(co==string::npos)
                     break;
                 p = co+1;
             }
             secret_t secret = assoc->secret();
             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? */
             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);
                 if(co==string::npos)
                     break;
                 pp = co+1;
             }
             p["openid.assoc_handle"] = pin.get_param("openid.assoc_handle");
             p["openid.sig"] = pin.get_param("openid.sig");
             p["openid.signed"] = pin.get_param("openid.signed");
@@ -268,49 +268,74 @@ namespace opkele {
         if(!curl)
             throw exception_curl(OPKELE_CP_ "failed to curl_easy_init()");
         string html;
         CURLcode r;
         (r=curl_misc_sets(curl))
         || (r=curl_easy_setopt(curl,CURLOPT_URL,url.c_str()))
         || (r=curl_easy_setopt(curl,CURLOPT_WRITEFUNCTION,_curl_tostring))
         || (r=curl_easy_setopt(curl,CURLOPT_WRITEDATA,&html))
         ;
         if(r)
             throw exception_curl(OPKELE_CP_ "failed to curl_easy_setopt()",r);
         r = curl_easy_perform(curl);
         if(r && r!=CURLE_WRITE_ERROR)
             throw exception_curl(OPKELE_CP_ "failed to curl_easy_perform()",r);
         pcrepp::Pcre bre("<body\\b",PCRE_CASELESS);
         // strip out everything past body
         if(bre.search(html))
             html.erase(bre.get_match_start());
         pcrepp::Pcre hdre("<head[^>]*>",PCRE_CASELESS);
         if(!hdre.search(html))
             throw bad_input(OPKELE_CP_ "failed to find head");
         html.erase(0,hdre.get_match_end()+1);
         pcrepp::Pcre lre("<link\\b([^>]+)>",PCRE_CASELESS),
             rre("\\brel=['\"]([^'\"]+)['\"]",PCRE_CASELESS),
             hre("\\bhref=['\"]([^'\"]+)['\"]",PCRE_CASELESS);
         while(lre.search(html)) {
             string attrs = lre[0];
             html.erase(0,lre.get_match_end()+1);
             if(!(rre.search(attrs)&&hre.search(attrs)))
                 continue;
             if(rre[0]=="openid.server") {
                 server = hre[0];
                 if(!delegate.empty())
                     break;
             }else if(rre[0]=="openid.delegate") {
                 delegate = hre[0];
                 if(!server.empty())
                     break;
             }
         }
         if(server.empty())
             throw failed_assertion(OPKELE_CP_ "The location has no openid.server declaration");
     }
 
     assoc_t consumer_t::find_assoc(const string& server) {
         throw failed_lookup(OPKELE_CP_ "no find_assoc() provided");
     }
 
+    string consumer_t::canonicalize(const string& url) {
+        string rv = url;
+        // strip leading and trailing spaces
+        string::size_type i = rv.find_first_not_of(" \t\r\n");
+        if(i==string::npos)
+            throw bad_input(OPKELE_CP_ "empty URL");
+        if(i)
+            rv.erase(0,i);
+        i = rv.find_last_not_of(" \t\r\n");
+        assert(i!=string::npos);
+        if(i<(rv.length()-1))
+            rv.erase(i+1);
+        // add missing http://
+        i = rv.find("://");
+        if(i==string::npos) { // primitive. but do we need more?
+            rv.insert(0,"http://");
+            i = sizeof("http://")-1;
+        }else{
+            i += sizeof("://")-1;
+        }
+        if(rv.find('/',i)==string::npos)
+            rv += '/';
+        return rv;
+    }
+
 }
diff --git a/lib/util.cc b/lib/util.cc
index 1e7335c..d78b5e0 100644
--- a/lib/util.cc
+++ b/lib/util.cc
@@ -38,101 +38,76 @@ namespace opkele {
         string bignum_to_base64(const BIGNUM *bn) {
             vector<unsigned char> bin(BN_num_bytes(bn));
             int l = BN_bn2bin(bn,&(bin.front()));
             string rv;
             mimetic::Base64::Encoder b(0);
             mimetic::encode(
                     bin.begin(),bin.begin()+l, b,
                     back_insert_iterator<string>(rv) );
             return rv;
         }
 
         /*
          * w3c times
          */
 
         string time_to_w3c(time_t t) {
             struct tm tm_t;
             if(!gmtime_r(&t,&tm_t))
                 throw failed_conversion(OPKELE_CP_ "failed to BN_dec2bn()");
             char rv[25];
             if(!strftime(rv,sizeof(rv)-1,"%Y-%m-%dT%H:%M:%SZ",&tm_t))
                 throw failed_conversion(OPKELE_CP_ "failed to strftime()");
             return rv;
         }
 
         time_t w3c_to_time(const string& w) {
             struct tm tm_t;
             memset(&tm_t,0,sizeof(tm_t));
             if(
                     sscanf(
                         w.c_str(),
                         "%04d-%02d-%02dT%02d:%02d:%02dZ",
                         &tm_t.tm_year,&tm_t.tm_mon,&tm_t.tm_mday,
                         &tm_t.tm_hour,&tm_t.tm_min,&tm_t.tm_sec
                     ) != 6 )
                 throw failed_conversion(OPKELE_CP_ "failed to sscanf()");
             tm_t.tm_mon--;
             tm_t.tm_year-=1900;
             time_t rv = mktime(&tm_t);
             if(rv==(time_t)-1)
                 throw failed_conversion(OPKELE_CP_ "failed to mktime()");
             return rv;
         }
 
         /*
          *
          */
 
-        string canonicalize_url(const string& url) {
-            string rv = url;
-            // strip leading and trailing spaces
-            string::size_type i = rv.find_first_not_of(" \t\r\n");
-            if(i==string::npos)
-                throw bad_input(OPKELE_CP_ "empty URL");
-            if(i)
-                rv.erase(0,i);
-            i = rv.find_last_not_of(" \t\r\n");
-            assert(i!=string::npos);
-            if(i<(rv.length()-1))
-                rv.erase(i+1);
-            // add missing http://
-            i = rv.find("://");
-            if(i==string::npos) { // primitive. but do we need more?
-                rv.insert(0,"http://");
-                i = sizeof("http://")-1;
-            }else{
-                i += sizeof("://")-1;
-            }
-            if(rv.find('/',i)==string::npos)
-                rv += '/';
-            return rv;
-        }
-
         string url_encode(const string& str) {
             char * t = curl_escape(str.c_str(),str.length());
             if(!t)
                 throw failed_conversion(OPKELE_CP_ "failed to curl_escape()");
             string rv(t);
             curl_free(t);
             return rv;
         }
 
         string long_to_string(long l) {
             char rv[32];
             int r=snprintf(rv,sizeof(rv),"%ld",l);
             if(r<0 || r>=sizeof(rv))
                 throw failed_conversion(OPKELE_CP_ "failed to snprintf()");
             return rv;
         }
 
         long string_to_long(const string& s) {
             char *endptr = 0;
             long rv = strtol(s.c_str(),&endptr,10);
             if((!endptr) || endptr==s.c_str())
                 throw failed_conversion(OPKELE_CP_ "failed to strtol()");
             return rv;
         }
 
     }
 
 }