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/*
** Copyright 2000-2018 Double Precision, Inc. See COPYING for
** distribution information.
*/
#include "rfc2045_config.h"
#include "rfc2045reply.h"
#include "rfc822/rfc822.h"
#include "rfc822/rfc2047.h"
#include <time.h>
#include <sys/time.h>
static std::string mksalutation_datefmt(std::string_view fmt,
std::string_view date)
{
time_t t;
if (fmt.empty())
{
fmt="%a, %d %b %Y %H:%M:%S %z";
}
std::string date_s{date.begin(), date.end()};
if (rfc822_parsedate_chk(date_s.c_str(), &t) == 0)
{
struct tm tmbuf;
if (localtime_r(&t, &tmbuf))
{
std::string fmtstr{fmt.begin(), fmt.end()};
char fmtbuf[1024];
fmtbuf[strftime(fmtbuf,
sizeof(fmtbuf)-1,
fmtstr.c_str(), &tmbuf)]=0;
date_s=fmtbuf;
}
}
return date_s;
}
std::string rfc2045::reply::mksalutation(std::string_view salutation_template,
std::string_view newsgroup,
std::string_view message_id,
std::string_view newsgroups,
std::string_view sender_addr,
std::string_view sender_name,
std::string_view date,
std::string_view subject)
{
std::string subj_decoded;
rfc822::display_header(
"subject",
subject,
charset,
std::back_inserter(subj_decoded));
std::string salutation;
auto i=salutation_template.size();
auto p=salutation_template.begin();
for (; i; --i, ++p)
{
const char *fmt_start=0, *fmt_end=0;
if (*p != '%' || i == 1)
{
salutation.push_back(*p);
continue;
}
++p;
--i;
if (*p == '{')
{
fmt_start= ++p;
--i;
while (i)
{
if (*p == '}')
{
fmt_end=p;
++p;
--i;
break;
}
}
if (!fmt_end)
{
--p;
++i;
continue;
}
}
if (!i)
break;
switch (*p) {
case 'n':
salutation += "\n";
break;
case 'C':
salutation += newsgroup;
break;
case 'i':
salutation += message_id;
break;
case 'N':
salutation += newsgroups;
break;
case 'f':
salutation += sender_addr;
break;
case 'F':
salutation += sender_name;
break;
case 'd':
if (!date.empty())
salutation += mksalutation_datefmt(
{
fmt_start,
static_cast<size_t>(
fmt_end-fmt_start
)
},
date);
break;
case 's':
salutation += subj_decoded;
break;
default:
salutation.push_back(*p);
break;
}
}
return salutation;
}
std::string rfc2045::reply::mkreferences(std::string_view oldref,
std::string_view oldmsgid)
{
std::string buf;
/* Create new references header */
buf.reserve(oldref.size()+oldmsgid.size()+4);
buf += oldref;
buf += ",";
buf += oldmsgid;
/* Do wrapping the RIGHT way, by
** RFC822 parsing the References: header
*/
rfc822::tokens tp{buf};
rfc822::addresses ap{tp};
/* Keep only the last 20 message IDs */
size_t i=0;
if (ap.size() > 20) i=ap.size()-20;
std::string s;
for (; i < ap.size(); ++i)
{
if (ap[i].address.empty())
continue;
if (!s.empty())
s += " ";
s += "<";
ap[i].address.print(std::back_inserter(s));
s += ">\n";
}
return s;
}
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