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#include <cassert>
#include <algorithm>
#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_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)
set_field(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);
}
}
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