// Output string must be 41 bytes minimum. out is returned as a convenience.
char* GetHashString(const char* in, char* out)
{
WDL_SHA1 sha;
sha.add(in, (int)strlen(in));
char hash[20];
sha.result(hash);
for (int i = 0; i < 20; i++)
sprintf(out + i*2, "%02X", (unsigned char)(hash[i] & 0xFF));
out[40] = 0;
return out;
}
int WDL_RNG_int32()
{
WDL_SHA1 tmp;
tmp.add(state,sizeof(state));
rngcycle();
union {
char buf[WDL_SHA1SIZE];
int a;
} b;
tmp.result(b.buf);
return b.a;
}
void WDL_RNG_bytes(void *buf, int buflen)
{
char *b=(char *)buf;
while (buflen > 0)
{
char tb[WDL_SHA1SIZE];
WDL_SHA1 tmp;
tmp.add(state,sizeof(state));
rngcycle();
tmp.result(tb);
int l=min(buflen,WDL_SHA1SIZE);
memcpy(b,tb,l);
buflen-=l;
b+=l;
}
}
void WDL_RNG_addentropy(void *buf, int buflen)
{
WDL_SHA1 tmp;
tmp.add(state,sizeof(state));
tmp.result(state);
tmp.reset();
tmp.add((unsigned char *)buf,buflen);
tmp.result(state+sizeof(state) - WDL_SHA1SIZE);
}
int Run()
{
// perform lookup here
user_valid=0;
if (!strncmp(username.Get(),"anonymous",9) && (!username.Get()[9] || username.Get()[9] == ':'))
{
logText("got anonymous request (%s)\n",g_config_allowanonymous?"allowing":"denying");
if (!g_config_allowanonymous) return 1;
user_valid=1;
reqpass=0;
WDL_String tmp(username.Get());
if (tmp.Get()[9] == ':' && tmp.Get()[10])
{
username.Set(tmp.Get()+10);
int cnt=16;
char *p=username.Get();
while (*p)
{
if (!cnt--)
{
*p=0;
break;
}
if (*p == '@' || *p == '.') *p='_';
p++;
}
}
else username.Set("anon");
username.Append("@");
username.Append(hostmask.Get());
if (g_config_anonymous_mask_ip)
{
char *p=username.Get();
while (*p) p++;
while (p > username.Get() && *p != '.' && *p != '@') p--;
if (*p == '.' && p[1])
{
p[1]='x';
p[2]=0;
}
}
privs=(g_config_allow_anonchat?PRIV_CHATSEND:0) | (g_config_allowanonymous_multi?PRIV_ALLOWMULTI:0) | PRIV_VOTE;
max_channels=g_config_maxch_anon;
}
else
{
int x;
logText("got login request for '%s'\n",username.Get());
if (g_status_user.Get()[0] && !strcmp(username.Get(),g_status_user.Get()))
{
user_valid=1;
reqpass=1;
is_status=1;
privs=0;
max_channels=0;
WDL_SHA1 shatmp;
shatmp.add(username.Get(),strlen(username.Get()));
shatmp.add(":",1);
shatmp.add(g_status_pass.Get(),strlen(g_status_pass.Get()));
shatmp.result(sha1buf_user);
}
else for (x = 0; x < g_userlist.GetSize(); x ++)
{
if (!strcmp(username.Get(),g_userlist.Get(x)->name.Get()))
{
user_valid=1;
reqpass=1;
char *pass=g_userlist.Get(x)->pass.Get();
WDL_SHA1 shatmp;
shatmp.add(username.Get(),strlen(username.Get()));
shatmp.add(":",1);
shatmp.add(pass,strlen(pass));
shatmp.result(sha1buf_user);
privs=g_userlist.Get(x)->priv_flag;
max_channels=g_config_maxch_user;
break;
}
}
}
return 1;
}
int SHM_MsgReplyConnection::Send(int type, const void *msg, int msglen,
void *replybuf, int maxretbuflen, const int *forceMsgID,
const void *secondchunk, int secondchunklen,
WDL_HeapBuf *hbreplyout)
{
if (!m_shm||m_has_had_error) return -1;
if (secondchunk && secondchunklen>0) msglen+=secondchunklen;
else secondchunklen=0;
int msgid;
{
WDL_MutexLock lock(&m_shmmutex);
m_shm->send_queue.AddDataToLE(&type,4,4);
if (forceMsgID) msgid = *forceMsgID;
else
{
if (!replybuf&&!hbreplyout) msgid=0;
else if (!(msgid = ++m_lastmsgid)) msgid = ++m_lastmsgid;
}
m_shm->send_queue.AddDataToLE(&msgid,4,4);
m_shm->send_queue.AddDataToLE(&msglen,4,4);
if (msglen>secondchunklen) m_shm->send_queue.Add(msg,msglen-secondchunklen);
if (secondchunklen>0) m_shm->send_queue.Add(secondchunk,secondchunklen);
#ifdef VERIFY_MESSAGES
WDL_SHA1 t;
t.add(&type,4);
t.add(&msgid,4);
t.add(&msglen,4);
if (msglen>secondchunklen) t.add(msg,msglen-secondchunklen);
if (secondchunklen>0) t.add(secondchunk,secondchunklen);
char tb[WDL_SHA1SIZE];
t.result(tb);
m_shm->send_queue.Add(tb,sizeof(tb));
#endif
if ((!replybuf && !hbreplyout) || !msgid) m_shm->Run(); // get this reply out ASAP
}
if ((hbreplyout||replybuf) && msgid)
{
int wait_cnt=30; // dont run idleproc for first Xms or so
while (!m_has_had_error)
{
if (wait_cnt<=0 && IdleProc && IdleProc(this))
{
m_has_had_error=true;
break;
}
WaitingMessage *msg=NULL;
bool r = RunInternal(msgid,&msg);
if (msg)
{
int rv = msg->m_msgdata.GetSize();
if (hbreplyout)
{
memcpy(hbreplyout->Resize(rv,false),msg->m_msgdata.Get(),rv);
}
if (replybuf)
{
if (rv > maxretbuflen) rv=maxretbuflen;
if (rv>0) memcpy(replybuf,msg->m_msgdata.Get(),rv);
}
m_shmmutex.Enter();
msg->_next = m_spares;
m_spares=msg;
m_shmmutex.Leave();
return rv;
}
else if (r) break;
if (wait_cnt>0) wait_cnt--;
HANDLE evt=m_shm->GetWaitEvent();
if (evt) WaitForSingleObject(evt,1);
else Sleep(1);
}
}
if (hbreplyout) hbreplyout->Resize(0,false);
return -1;
}
bool SHM_MsgReplyConnection::RunInternal(int checkForReplyID, WaitingMessage **replyPtr)
{
if (!m_shm||m_has_had_error) return true;
if (replyPtr) *replyPtr=0;
int s=0;
do
{
m_shmmutex.Enter();
// autocompact on first time through
if (!s) m_shm->recv_queue.Compact();
s = m_shm->Run();
if (m_shm->send_queue.Available() > m_maxqueuesize) s=-1;
while (m_shm->recv_queue.GetSize()>=12)
{
int datasz = *(int *)((char *)m_shm->recv_queue.Get()+8);
WDL_Queue::WDL_Queue__bswap_buffer(&datasz,4); // convert to LE if needed
if (m_shm->recv_queue.GetSize() < 12 + datasz) break;
#ifdef VERIFY_MESSAGES
if (m_shm->recv_queue.GetSize() < 12 + datasz + WDL_SHA1SIZE) break;
#endif
int type = *(int *)((char *)m_shm->recv_queue.Get());
WDL_Queue::WDL_Queue__bswap_buffer(&type,4); // convert to LE if needed
WaitingMessage *msg = m_spares;
if (msg) m_spares = m_spares->_next;
else msg = new WaitingMessage;
msg->m_msgid = *(int *)((char *)m_shm->recv_queue.Get() + 4);
WDL_Queue::WDL_Queue__bswap_buffer(&msg->m_msgid,4); // convert to LE if needed
msg->m_msgtype = type;
memcpy(msg->m_msgdata.Resize(datasz,false),(char *)m_shm->recv_queue.Get()+12, datasz);
m_shm->recv_queue.Advance(12+datasz);
#ifdef VERIFY_MESSAGES
WDL_SHA1 t;
t.add(&type,4);
t.add(&msg->m_msgid,4);
t.add(&datasz,4);
t.add(msg->m_msgdata.Get(),msg->m_msgdata.GetSize());
char tb[WDL_SHA1SIZE];
t.result(tb);
if (memcmp(m_shm->recv_queue.Get(),tb,WDL_SHA1SIZE))
MessageBox(NULL,"FAIL","A",0);
m_shm->recv_queue.Advance(WDL_SHA1SIZE);
#endif
if (type==0)
{
if (checkForReplyID && replyPtr && !*replyPtr &&
checkForReplyID == msg->m_msgid)
{
*replyPtr = msg;
s=0;
break; // we're done!
}
else
{
msg->_next = m_waiting_replies;
m_waiting_replies = msg;
}
}
else
{
m_shmmutex.Leave();
WaitingMessage *msgtail=NULL;
if (OnRecv)
{
msg->_next=0;
msgtail = msg = OnRecv(this,msg);
while (msgtail && msgtail->_next) msgtail=msgtail->_next;
}
else if (msg->m_msgid) Reply(msg->m_msgid,"",0); // send an empty reply
m_shmmutex.Enter(); // get shm again
if (msg)
{
(msgtail?msgtail:msg)->_next = m_spares;
m_spares=msg;
}
}
} // while queue has stuff
if (checkForReplyID && replyPtr && !*replyPtr)
{
WaitingMessage *m=m_waiting_replies;
WaitingMessage *lp=NULL;
while (m)
{
if (m->m_msgid == checkForReplyID)
{
if (lp) lp->_next = m->_next;
else m_waiting_replies=m->_next;
*replyPtr = m;
s=0; // make sure we return ASAP
break;
}
lp = m;
m=m->_next;
}
}
m_shmmutex.Leave();
} while (s>0);
if (s<0) m_has_had_error=true;
else if (m_shm && m_shm->WantSendKeepAlive())
{
int zer=0;
Send(0,NULL,0,NULL,0,&zer);
}
return s<0;
}
