| -rw-r--r-- | lib/Makefile.am | 4 | ||||
| -rw-r--r-- | lib/consumer.cc | 124 |
2 files changed, 67 insertions, 61 deletions
diff --git a/lib/Makefile.am b/lib/Makefile.am index a68faf6..b008a52 100644 --- a/lib/Makefile.am +++ b/lib/Makefile.am @@ -1,23 +1,23 @@ lib_LTLIBRARIES = libopkele.la INCLUDES = \ -I${top_srcdir}/include/ \ ${KONFORKA_CFLAGS} \ ${OPENSSL_CFLAGS} \ ${LIBCURL_CPPFLAGS} \ - ${PCREPP_CFLAGS} + ${PCRE_CFLAGS} libopkele_la_LIBADD = \ ${LIBCURL} \ - ${PCREPP_LIBS} \ + ${PCRE_LIBS} \ ${OPENSSL_LIBS} \ ${KONFORKA_LIBS} libopkele_la_SOURCES = \ params.cc \ util.cc \ server.cc \ secret.cc \ data.cc \ consumer.cc \ exception.cc \ extension.cc \ diff --git a/lib/consumer.cc b/lib/consumer.cc index ff5da91..df95b64 100644 --- a/lib/consumer.cc +++ b/lib/consumer.cc @@ -3,35 +3,73 @@ #include <opkele/util.h> #include <opkele/exception.h> #include <opkele/data.h> #include <opkele/consumer.h> #include <openssl/sha.h> #include <openssl/hmac.h> #include <curl/curl.h> #include <iostream> #include "config.h" -#if defined(USE_LIBPCRECPP) -# include <pcrecpp.h> -#elif defined(USE_PCREPP) -# include <pcre++.h> -#else - /* internal implementation won't be built */ -#endif +#include <pcre.h> namespace opkele { using namespace std; + class pcre_matches_t { + public: + int *_ov; + int _s; + + pcre_matches_t() : _ov(0), _s(0) { } + pcre_matches_t(int s) : _ov(0), _s(s) { + if(_s&1) ++_s; + _s += _s>>1; + _ov = new int[_s]; + } + ~pcre_matches_t() throw() { if(_ov) delete[] _ov; } + + int begin(int i) const { return _ov[i<<1]; } + int end(int i) const { return _ov[(i<<1)+1]; } + int length(int i) const { int t=i<<1; return _ov[t+1]-_ov[t]; } + }; + + class pcre_t { + public: + pcre *_p; + + pcre_t() : _p(0) { } + pcre_t(pcre *p) : _p(p) { } + pcre_t(const char *re,int opts) : _p(0) { + static const char *errptr; static int erroffset; + _p = pcre_compile(re,opts,&errptr,&erroffset,NULL); + if(!_p) + throw internal_error(OPKELE_CP_ string("Failed to compile regexp: ")+errptr); + } + ~pcre_t() throw() { if(_p) (*pcre_free)(_p); } + + pcre_t& operator=(pcre *p) { if(_p) (*pcre_free)(_p); _p=p; return *this; } + + operator const pcre*(void) const { return _p; } + operator pcre*(void) { return _p; } + + int exec(const string& s,pcre_matches_t& m) { + if(!_p) + throw internal_error(OPKELE_CP_ "Trying to execute absent regexp"); + return pcre_exec(_p,NULL,s.c_str(),s.length(),0,0,m._ov,m._s); + } + }; + class curl_t { public: CURL *_c; curl_t() : _c(0) { } curl_t(CURL *c) : _c(c) { } ~curl_t() throw() { if(_c) curl_easy_cleanup(_c); } curl_t& operator=(CURL *c) { if(_c) curl_easy_cleanup(_c); _c=c; return *this; } operator const CURL*(void) const { return _c; } operator CURL*(void) { return _c; } @@ -259,103 +297,71 @@ namespace opkele { invalidate_assoc(server,pp.get_param("invalidate_handle")); if(pp.has_param("is_valid")) { if(pp.get_param("is_valid")=="true") return; }else if(pp.has_param("lifetime")) { if(util::string_to_long(pp.get_param("lifetime"))) return; } throw failed_check_authentication(OPKELE_CP_ "failed to verify response"); } void consumer_t::retrieve_links(const string& url,string& server,string& delegate) { -#if defined(USE_LIBPCRECPP) || defined(USE_PCREPP) server.erase(); delegate.erase(); curl_t curl = curl_easy_init(); 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); - // strip out everything past body - static const char *re_hdre = "<\\s*head[^>]*>", + static const char *re_bre = "<\\s*body\\b", *re_hdre = "<\\s*head[^>]*>", *re_lre = "<\\s*link\\b([^>]+)>", *re_rre = "\\brel\\s*=\\s*['\"]\\s*([^'\"\\s]+)\\s*['\"]", *re_hre = "\\bhref\\s*=\\s*['\"]\\s*([^'\"\\s]+)\\s*['\"]"; -#if defined(USE_LIBPCRECPP) - static pcrecpp::RE_Options ro(PCRE_CASELESS|PCRE_DOTALL); - static pcrecpp::RE - bre("<body\\b.*",ro), hdre(re_hdre,ro), - lre(re_lre,ro), rre(re_rre), hre(re_hre,ro); - bre.Replace("",&html); - pcrecpp::StringPiece hpiece(html); - if(!hdre.FindAndConsume(&hpiece)) - throw bad_input(OPKELE_CP_ "failed to find head"); - string attrs; - while(lre.FindAndConsume(&hpiece,&attrs)) { - pcrecpp::StringPiece rel, href; - if(!(rre.PartialMatch(attrs,&rel) && hre.PartialMatch(attrs,&href))) + pcre_matches_t m1(3), m2(3); + pcre_t bre(re_bre,PCRE_CASELESS); + if(bre.exec(html,m1)>0) + html.erase(m1.begin(0)); + pcre_t hdre(re_hdre,PCRE_CASELESS); + if(hdre.exec(html,m1)<=0) + throw bad_input(OPKELE_CP_ "failed to find <head>"); + html.erase(0,m1.end(0)+1); + pcre_t lre(re_lre,PCRE_CASELESS), rre(re_rre,PCRE_CASELESS), hre(re_hre,PCRE_CASELESS); + while(lre.exec(html,m1)>=2) { + string attrs(html,m1.begin(1),m1.length(1)); + html.erase(0,m1.end(0)+1); + if(!( rre.exec(attrs,m1)>=2 && hre.exec(attrs,m2)>=2 )) continue; + string rel(attrs,m1.begin(1),m1.length(1)); + string href(attrs,m2.begin(1),m2.length(1)); if(rel=="openid.server") { - href.CopyToString(&server); - if(!delegate.empty()) - break; + server = href; + if(!delegate.empty()) break; }else if(rel=="openid.delegate") { - href.CopyToString(&delegate); - if(!server.empty()) - break; - } + delegate = href; + if(!server.empty()) break; } -#elif defined(USE_PCREPP) - pcrepp::Pcre bre("<body\\b",PCRE_CASELESS); - if(bre.search(html)) - html.erase(bre.get_match_start()); - pcrepp::Pcre hdre(re_hdre,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(re_lre,PCRE_CASELESS), rre(re_rre,PCRE_CASELESS), hre(re_hre,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; } - } -#else - #error "I must have gone crazy" -#endif if(server.empty()) throw failed_assertion(OPKELE_CP_ "The location has no openid.server declaration"); -#else /* none of the RE bindings enabled */ - throw not_implemented(OPKELE_CP_ "No internal implementation of retrieve_links were provided at compile-time"); -#endif } assoc_t consumer_t::find_assoc(const string& server) { throw failed_lookup(OPKELE_CP_ "no find_assoc() provided"); } string consumer_t::normalize(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"); |