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/* Main processing code for Services.
*
* (C) 2003-2023 Anope Team
* Contact us at team@anope.org
*
* Please read COPYING and README for further details.
*
* Based on the original code of Epona by Lara.
* Based on the original code of Services by Andy Church.
*/
#include "services.h"
#include "modules.h"
#include "protocol.h"
#include "servers.h"
#include "users.h"
#include "regchannel.h"
void Anope::Process(const Anope::string &buffer)
{
/* If debugging, log the buffer */
Log(LOG_RAWIO) << "Received: " << buffer;
if (buffer.empty())
return;
Anope::map<Anope::string> tags;
Anope::string source, command;
std::vector<Anope::string> params;
if (!IRCD->Parse(buffer, tags, source, command, params))
return;
if (Anope::ProtocolDebug)
{
if (tags.empty())
Log() << "No tags";
else
for (Anope::map<Anope::string>::const_iterator it = tags.begin(); it != tags.end(); ++it)
Log() << "tags " << it->first << ": " << it->second;
Log() << "Source : " << (source.empty() ? "No source" : source);
Log() << "Command: " << command;
if (params.empty())
Log() << "No params";
else
for (unsigned i = 0; i < params.size(); ++i)
Log() << "params " << i << ": " << params[i];
}
static const Anope::string proto_name = ModuleManager::FindFirstOf(PROTOCOL) ? ModuleManager::FindFirstOf(PROTOCOL)->name : "";
MessageSource src(source);
EventReturn MOD_RESULT;
FOREACH_RESULT(OnMessage, MOD_RESULT, (src, command, params));
if (MOD_RESULT == EVENT_STOP)
return;
ServiceReference<IRCDMessage> m("IRCDMessage", proto_name + "/" + command.lower());
if (!m)
{
Log(LOG_DEBUG) << "unknown message from server (" << buffer << ")";
return;
}
if (m->HasFlag(IRCDMESSAGE_SOFT_LIMIT) ? (params.size() < m->GetParamCount()) : (params.size() != m->GetParamCount()))
Log(LOG_DEBUG) << "invalid parameters for " << command << ": " << params.size() << " != " << m->GetParamCount();
else if (m->HasFlag(IRCDMESSAGE_REQUIRE_USER) && !src.GetUser())
Log(LOG_DEBUG) << "unexpected non-user source " << source << " for " << command;
else if (m->HasFlag(IRCDMESSAGE_REQUIRE_SERVER) && !source.empty() && !src.GetServer())
Log(LOG_DEBUG) << "unexpected non-server source " << source << " for " << command;
else
m->Run(src, params, tags);
}
bool IRCDProto::Parse(const Anope::string &buffer, Anope::map<Anope::string> &tags, Anope::string &source, Anope::string &command, std::vector<Anope::string> ¶ms)
{
MessageTokenizer tokens(buffer);
// This will always exist because of the check in Anope::Process.
Anope::string token;
tokens.GetMiddle(token);
if (token[0] == '@')
{
// The line begins with message tags.
sepstream tagstream(token.substr(1), ';');
while (tagstream.GetToken(token))
{
const Anope::string::size_type valsep = token.find('=');
if (valsep == Anope::string::npos)
{
// Tag has no value.
tags[token];
}
else
{
// Tag has a value
tags[token.substr(0, valsep)] = token.substr(valsep + 1);
}
}
if (!tokens.GetMiddle(token))
return false;
}
if (token[0] == ':')
{
source = token.substr(1);
if (!tokens.GetMiddle(token))
return false;
}
// Store the command name.
command = token;
// Retrieve all of the parameters.
while (tokens.GetTrailing(token))
params.push_back(token);
return true;
}
Anope::string IRCDProto::Format(const Anope::string &source, const Anope::string &message)
{
if (!source.empty())
return ":" + source + " " + message;
else
return message;
}
MessageTokenizer::MessageTokenizer(const Anope::string &msg)
: message(msg)
, position(0)
{
}
bool MessageTokenizer::GetMiddle(Anope::string &token)
{
// If we are past the end of the string we can't do anything.
if (position >= message.length())
{
token.clear();
return false;
}
// If we can't find another separator this is the last token in the message.
Anope::string::size_type separator = message.find(' ', position);
if (separator == Anope::string::npos)
{
token = message.substr(position);
position = message.length();
return true;
}
token = message.substr(position, separator - position);
position = message.find_first_not_of(' ', separator);
return true;
}
bool MessageTokenizer::GetTrailing(Anope::string &token)
{
// If we are past the end of the string we can't do anything.
if (position >= message.length())
{
token.clear();
return false;
}
// If this is true then we have a <trailing> token!
if (message[position] == ':')
{
token = message.substr(position + 1);
position = message.length();
return true;
}
// There is no <trailing> token so it must be a <middle> token.
return GetMiddle(token);
}
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