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/**
* @file operator-lsub.cc
* @brief Implementation of the LSUB command.
* @author Andreas Aardal Hanssen
* @date 2002-2005
*/
#include "convert.h"
#include "depot.h"
#include "iodevice.h"
#include "iofactory.h"
#include "mailbox.h"
#include "operators.h"
#include "recursivedescent.h"
#include "regmatch.h"
#include "session.h"
#include <algorithm>
#include <iostream>
#include <string>
#include <vector>
namespace {
const int DIR_SELECT = 0x01;
const int DIR_MARKED = 0x02;
const int DIR_NOINFERIORS = 0x04;
const int DIR_LEAF = 0x08;
}
using namespace Binc;
using std::multimap;
using std::string;
LsubOperator::LsubOperator() {}
LsubOperator::~LsubOperator() {}
const string LsubOperator::getName() const
{
return "LSUB";
}
Session::State LsubOperator::getState() const
{
return Session::State(Session::AUTHENTICATED | Session::SELECTED);
}
Operator::ProcessResult LsubOperator::process(Depot &depot, Request &command)
{
const char delim = depot.getDelimiter();
// remove leading or trailing delimiter in wildcard
string wildcard = command.getListMailbox();
trim(wildcard, string(&delim, 1));
// convert wildcard to regular expression
string regex = toRegex(wildcard, depot.getDelimiter());
string wildcardLower = regex;
lowercase(wildcardLower);
if (wildcardLower.substr(0, 6) == "^inbox")
regex = "^[iI][nN][bB][oO][xX]" + regex.substr(6);
// remove leading or trailing delimiter in reference
string ref = command.getMailbox();
trim(ref, string(&delim, 1));
wildcardLower = ref;
lowercase(wildcardLower);
if (wildcardLower.substr(0, 5) == "inbox"
&& (wildcardLower.length() == 5 || wildcardLower[5] == delim))
{
ref = "INBOX" + ref.substr(5);
}
// a multimap from mailbox name to flags
multimap<string, int> mailboxes;
// read through all entries in depository.
for (auto i = depot.begin("."); i != depot.end(); ++i) {
const string path = *i;
const string mpath = depot.filenameToMailbox(path);
Mailbox *m = nullptr;
// skip entries that are not identified as mailboxes
if ((m = depot.get(mpath)) == nullptr) continue;
// convert file name to mailbox name. skip it if there is no
// corresponding mailbox name.
string tmp = toCanonMailbox(depot.filenameToMailbox(path));
trim(tmp, string(&delim, 1));
if (tmp == "") {
continue;
} else {
int flags = DIR_SELECT;
multimap<string, int>::iterator mi = mailboxes.find(tmp);
if (mi != mailboxes.end()) {
flags |= mi->second;
mailboxes.erase(mi);
}
mailboxes.insert(make_pair(tmp, flags));
}
// now add all superior mailboxes with no flags set if not
// added already.
string::size_type pos = tmp.rfind(delim);
while (pos != string::npos) {
tmp = tmp.substr(0, pos);
trim(tmp, string(&delim, 1));
multimap<string, int>::iterator mi = mailboxes.find(tmp);
if (mi == mailboxes.end()) mailboxes.insert(make_pair(tmp, 0));
pos = tmp.rfind(delim);
}
}
// find leaf nodes O(N^2)
multimap<string, int>::iterator i;
for (i = mailboxes.begin(); i != mailboxes.end(); ++i) {
string mailbox = i->first;
mailbox += delim;
bool leaf = true;
multimap<string, int>::const_iterator j;
for (j = mailboxes.begin(); j != mailboxes.end(); ++j) {
string::size_type pos = j->first.rfind(delim);
if (pos == string::npos) continue;
string base = j->first.substr(0, pos + 1);
if (mailbox == base) {
leaf = false;
break;
}
}
if (leaf) {
unsigned int flags = i->second;
flags |= DIR_LEAF;
i->second = flags;
}
}
depot.loadSubscribes();
std::vector<string> subscribed = depot.getSubscriptions();
sort(subscribed.begin(), subscribed.end());
// finally, print all mailbox entries with flags.
for (const auto &j : subscribed) {
if (ref == "" || (ref.length() <= j.length() && ref == j.substr(0, ref.length()))) {
if (regexMatch(j.substr(ref.length()), regex) == 0) {
int flags = 0;
for (i = mailboxes.begin(); i != mailboxes.end(); ++i) {
if (i->first == j) {
flags = i->second;
break;
}
}
bincClient << "* LSUB (";
string sep = "";
bool noselect = false;
if (!(flags & DIR_SELECT)) {
bincClient << sep << "\\Noselect";
sep = " ";
noselect = true;
}
if (!noselect) {
if (flags & DIR_MARKED)
bincClient << sep << "\\Marked";
else
bincClient << sep << "\\Unmarked";
sep = " ";
}
if (flags & DIR_LEAF)
bincClient << sep << "\\HasNoChildren";
else
bincClient << sep << "\\HasChildren";
sep = " ";
if (flags & DIR_NOINFERIORS) bincClient << sep << "\\Noinferiors";
bincClient << ") \"" << depot.getDelimiter() << "\" " << toImapString(j) << std::endl;
}
}
}
return Operator::ProcessResult::OK;
}
Parser::ParseResult LsubOperator::parse(Request &c_in)
{
constexpr auto ACCEPT = Parser::ParseResult::ACCEPT;
constexpr auto ERROR = Parser::ParseResult::ERROR;
constexpr auto REJECT = Parser::ParseResult::REJECT;
Session &session = Session::getInstance();
if (c_in.getUidMode()) return REJECT;
Parser::ParseResult res;
if ((res = expectSPACE()) != ACCEPT) {
session.setLastError("Expected SPACE after LSUB");
return ERROR;
}
string mailbox;
if ((res = expectMailbox(mailbox)) != ACCEPT) {
session.setLastError("Expected mailbox after LSUB SPACE");
return ERROR;
}
c_in.setMailbox(mailbox);
if ((res = expectSPACE()) != ACCEPT) {
session.setLastError("Expected SPACE after LSUB SPACE mailbox");
return ERROR;
}
string listmailbox;
if ((res = expectListMailbox(listmailbox)) != ACCEPT) {
session.setLastError("Expected list_mailbox after LSUB SPACE"
" mailbox SPACE");
return ERROR;
}
if ((res = expectCRLF()) != ACCEPT) {
session.setLastError("Expected CRLF after LSUB SPACE"
" mailbox SPACE list_mailbox");
return ERROR;
}
c_in.setListMailbox(listmailbox);
c_in.setName("LSUB");
return ACCEPT;
}
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