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/* ---------------------------------------------------------------------------
* couriergrey - Greylisting filter for Courier
* Copyright (C) 2007-2012 Matthias Wimmer <m@tthias.eu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
* ---------------------------------------------------------------------------
* vi: sw=4:tabstop=8
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "mail_processor.h"
#include <cstring>
#include <sstream>
#include <fstream>
namespace couriergrey {
void mail_processor::read_mail(const std::string& filename) {
std::ifstream mail(filename.c_str());
std::string header_value;
bool first_received_header = true;
while (std::getline(mail, header_value)) {
// check for end of header
if (header_value.length() == 0) {
// empty line is end of header
break;
}
// check if the header is continued in the next line
while (mail) {
int peeked_character = mail.peek();
if (peeked_character != ' ' and peeked_character != '\t') {
break;
}
std::string continuing_line;
std::getline(mail, continuing_line);
header_value += continuing_line;
}
// check if we got the first received header
if (first_received_header && header_value.substr(0, 9) == "Received:") {
// has the message been received authenticated?
if (header_value.find("(AUTH: ") != std::string::npos) {
authed = true;
}
// the next one isn't the first one anymore
first_received_header = false;
}
// check if it's the SPF header we are looking for
// Note: normally we would have to do case-insensitve matching, but as the header is always
// created by Courier we can just check for the casing that Courier uses.
// Case-sensitve matching is faster ...
if (header_value.substr(0, 13) == "Received-SPF:" && header_value.find("SPF=MAILFROM;") != std::string::npos) {
// okay ... we have to extract the SPF state
std::istringstream header_stream(header_value.substr(13));
std::string spf_state_string;
header_stream >> spf_state_string;
if (spf_state_string == "pass") {
spf_envelope_sender_state = pass;
} else if (spf_state_string == "fail") {
spf_envelope_sender_state = fail;
} else if (spf_state_string == "softfail") {
spf_envelope_sender_state = softfail;
} else if (spf_state_string == "neutral") {
spf_envelope_sender_state = neutral;
} else if (spf_state_string == "none") {
spf_envelope_sender_state = none;
} else if (spf_state_string == "temperror") { // seems not to be created by courier
spf_envelope_sender_state = temperror;
} else if (spf_state_string == "permerror") { // seems not to be created by courier
spf_envelope_sender_state = permerror;
}
}
}
}
}
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