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authorMichael Krelin <hacker@klever.net>2008-03-03 15:57:15 (UTC)
committer Michael Krelin <hacker@klever.net>2008-03-03 15:57:15 (UTC)
commitc28479399ef0fedeb6bf14ec665bb4c427654356 (patch) (side-by-side diff)
treeff1dfe84a54f717772bdb6233a5cbfedb57788d1 /lib/message.cc
parent0182b9dee269f1a8f3fc0794bfdf4a143fa1b5be (diff)
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introduced base_message class as a base for basic_openid_message
Signed-off-by: Michael Krelin <hacker@klever.net>
Diffstat (limited to 'lib/message.cc') (more/less context) (show whitespace changes)
-rw-r--r--lib/message.cc270
1 files changed, 270 insertions, 0 deletions
diff --git a/lib/message.cc b/lib/message.cc
new file mode 100644
index 0000000..78f20f4
--- a/dev/null
+++ b/lib/message.cc
@@ -0,0 +1,270 @@
+#include <cassert>
+#include <opkele/types.h>
+#include <opkele/exception.h>
+#include <opkele/util.h>
+#include <opkele/debug.h>
+
+#include "config.h"
+
+namespace opkele {
+ using std::input_iterator_tag;
+ using std::unary_function;
+
+ struct __om_copier : public unary_function<const string&,void> {
+ public:
+ const basic_message& from;
+ basic_message& to;
+
+ __om_copier(basic_message& t,const basic_message& f)
+ : from(f), to(t) { }
+
+ result_type operator()(argument_type f) {
+ to.set_field(f,from.get_field(f)); }
+ };
+
+ basic_message::basic_message(const basic_message& x) {
+ x.copy_to(*this);
+ }
+ void basic_message::copy_to(basic_message& x) const {
+ x.reset_fields();
+ for_each(fields_begin(),fields_end(),
+ __om_copier(x,*this) );
+ }
+ void basic_message::append_to(basic_message& x) const {
+ for_each(fields_begin(),fields_end(),
+ __om_copier(x,*this) );
+ }
+
+ struct __om_query_builder : public unary_function<const string&,void> {
+ public:
+ const basic_message& om;
+ bool first;
+ string& rv;
+ const char *pfx;
+
+ __om_query_builder(const char *p,string& r,const basic_message& m)
+ : om(m), first(true), rv(r), pfx(p) {
+ for_each(om.fields_begin(),om.fields_end(),*this);
+ }
+ __om_query_builder(const char *p,string& r,const basic_message& m,const string& u)
+ : om(m), first(true), rv(r), pfx(p) {
+ rv = u;
+ if(rv.find('?')==string::npos)
+ rv += '?';
+ else
+ first = false;
+ for_each(om.fields_begin(),om.fields_end(),*this);
+ }
+
+ result_type operator()(argument_type f) {
+ if(first)
+ first = false;
+ else
+ rv += '&';
+ if(pfx) rv += pfx;
+ rv+= f;
+ rv += '=';
+ rv += util::url_encode(om.get_field(f));
+ }
+ };
+
+ string basic_message::append_query(const string& url,const char *pfx) const {
+ string rv;
+ return __om_query_builder(pfx,rv,*this,url).rv;
+ }
+ string basic_message::query_string(const char *pfx) const {
+ string rv;
+ return __om_query_builder(pfx,rv,*this).rv;
+ }
+
+ void basic_message::reset_fields() {
+ throw not_implemented(OPKELE_CP_ "reset_fields() not implemented");
+ }
+ void basic_message::set_field(const string&,const string&) {
+ throw not_implemented(OPKELE_CP_ "set_field() not implemented");
+ }
+ void basic_message::reset_field(const string&) {
+ throw not_implemented(OPKELE_CP_ "reset_field() not implemented");
+ }
+
+ struct __om_ns_finder : public unary_function<const string&,bool> {
+ public:
+ const basic_openid_message& om;
+ const string& uri;
+
+ __om_ns_finder(const basic_openid_message& m,
+ const string& u) : om(m), uri(u) { }
+
+ result_type operator()(argument_type f) {
+ return
+ (!strncmp(f.c_str(),"ns.",sizeof("ns.")-1))
+ && om.get_field(f)==uri ;
+ }
+ };
+
+ bool basic_openid_message::has_ns(const string& uri) const {
+ fields_iterator ei = fields_end();
+ fields_iterator i = find_if(fields_begin(),fields_end(),
+ __om_ns_finder(*this,uri));
+ return !(i==ei);
+ }
+ string basic_openid_message::get_ns(const string& uri) const {
+ fields_iterator ei = fields_end();
+ fields_iterator i = find_if(fields_begin(),fields_end(),
+ __om_ns_finder(*this,uri));
+ if(i==ei)
+ throw failed_lookup(OPKELE_CP_ string("failed to find namespace ")+uri);
+ return i->substr(3);
+ }
+
+ void basic_openid_message::from_keyvalues(const string& kv) {
+ reset_fields();
+ string::size_type p = 0;
+ while(true) {
+ string::size_type co = kv.find(':',p);
+ if(co==string::npos)
+ break;
+#ifndef POSTELS_LAW
+ string::size_type nl = kv.find('\n',co+1);
+ if(nl==string::npos)
+ throw bad_input(OPKELE_CP_ "malformed input");
+ if(nl>co)
+ insert(value_type(kv.substr(p,co-p),kv.substr(co+1,nl-co-1)));
+ p = nl+1;
+#else /* POSTELS_LAW */
+ string::size_type lb = kv.find_first_of("\r\n",co+1);
+ if(lb==string::npos) {
+ set_field(kv.substr(p,co-p),kv.substr(co+1));
+ break;
+ }
+ if(lb>co)
+ set_field(kv.substr(p,co-p),kv.substr(co+1,lb-co-1));
+ string::size_type nolb = kv.find_first_not_of("\r\n",lb);
+ if(nolb==string::npos)
+ break;
+ p = nolb;
+#endif /* POSTELS_LAW */
+ }
+ }
+
+ struct __om_kv_outputter : public unary_function<const string&,void> {
+ public:
+ const basic_openid_message& om;
+ ostream& os;
+
+ __om_kv_outputter(const basic_openid_message& m,ostream& s)
+ : om(m), os(s) { }
+
+ result_type operator()(argument_type f) {
+ os << f << ':' << om.get_field(f) << '\n';
+ }
+ };
+
+ void basic_openid_message::to_keyvalues(ostream& o) const {
+ for_each(fields_begin(),fields_end(),__om_kv_outputter(*this,o));
+ }
+
+ struct __om_html_outputter : public unary_function<const string&,void> {
+ public:
+ const basic_openid_message& om;
+ ostream& os;
+ const char *pfx;
+
+ __om_html_outputter(const basic_openid_message& m,ostream& s,const char *p=0)
+ : om(m), os(s), pfx(p) { }
+
+ result_type operator()(argument_type f) {
+ os <<
+ "<input type=\"hidden\""
+ " name=\"";
+ if(pfx)
+ os << util::attr_escape(pfx);
+ os << util::attr_escape(f) << "\""
+ " value=\"" << util::attr_escape(om.get_field(f)) << "\" />";
+ }
+ };
+
+ void basic_openid_message::to_htmlhiddens(ostream& o,const char* pfx) const {
+ for_each(fields_begin(),fields_end(),__om_html_outputter(*this,o,pfx));
+ }
+
+ void basic_openid_message::add_to_signed(const string& fields) {
+ string::size_type fnc = fields.find_first_not_of(",");
+ if(fnc==string::npos)
+ throw bad_input(OPKELE_CP_ "Trying to add nothing in particular to the list of signed fields");
+ string signeds;
+ try {
+ signeds = get_field("signed");
+ string::size_type lnc = signeds.find_last_not_of(",");
+ if(lnc==string::npos)
+ signeds.assign(fields,fnc,fields.size()-fnc);
+ else{
+ string::size_type ss = signeds.size();
+ if(lnc==(ss-1)) {
+ signeds+= ',';
+ signeds.append(fields,fnc,fields.size()-fnc);
+ }else{
+ if(lnc<(ss-2))
+ signeds.replace(lnc+2,ss-lnc-2,
+ fields,fnc,fields.size()-fnc);
+ else
+ signeds.append(fields,fnc,fields.size()-fnc);
+ }
+ }
+ }catch(failed_lookup&) {
+ signeds.assign(fields,fnc,fields.size()-fnc);
+ }
+ set_field("signed",signeds);
+ }
+
+ string basic_openid_message::find_ns(const string& uri,const char *pfx) const {
+ try {
+ return get_ns(uri);
+ }catch(failed_lookup&) {
+ return pfx;
+ }
+ }
+ string basic_openid_message::allocate_ns(const string& uri,const char *pfx) {
+ if(!has_field("ns"))
+ return pfx;
+ if(has_ns(uri))
+ throw bad_input(OPKELE_CP_ "OpenID message already contains namespace");
+ string rv = pfx;
+ if(has_field("ns."+rv)) {
+ string::reference c=rv[rv.length()];
+ for(c='a';c<='z' && has_field("ns."+rv);++c);
+ if(c=='z')
+ throw exception(OPKELE_CP_ "Failed to allocate namespace");
+ }
+ set_field("ns."+rv,uri);
+ return rv;
+ }
+
+ bool openid_message_t::has_field(const string& n) const {
+ return find(n)!=end();
+ }
+ const string& openid_message_t::get_field(const string& n) const {
+ const_iterator i=find(n);
+ if(i==end())
+ throw failed_lookup(OPKELE_CP_ n+": no such field");
+ return i->second;
+ }
+
+ openid_message_t::fields_iterator openid_message_t::fields_begin() const {
+ return util::map_keys_iterator<const_iterator,string,const string&,const string*>(begin(),end());
+ }
+ openid_message_t::fields_iterator openid_message_t::fields_end() const {
+ return util::map_keys_iterator<const_iterator,string,const string&,const string*>(end(),end());
+ }
+
+ void openid_message_t::reset_fields() {
+ clear();
+ }
+ void openid_message_t::set_field(const string& n,const string& v) {
+ (*this)[n]=v;
+ }
+ void openid_message_t::reset_field(const string& n) {
+ erase(n);
+ }
+
+}