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<h1>servers.cpp</h1><a href="servers_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <span class="comment">/* +------------------------------------+</span>
00002 <span class="comment"> * | Inspire Internet Relay Chat Daemon |</span>
00003 <span class="comment"> * +------------------------------------+</span>
00004 <span class="comment"> *</span>
00005 <span class="comment"> * Inspire is copyright (C) 2002-2004 ChatSpike-Dev.</span>
00006 <span class="comment"> * E-mail:</span>
00007 <span class="comment"> * <brain@chatspike.net></span>
00008 <span class="comment"> * <Craig@chatspike.net></span>
00009 <span class="comment"> * </span>
00010 <span class="comment"> * Written by Craig Edwards, Craig McLure, and others.</span>
00011 <span class="comment"> * This program is free but copyrighted software; see</span>
00012 <span class="comment"> * the file COPYING for details.</span>
00013 <span class="comment"> *</span>
00014 <span class="comment"> * ---------------------------------------------------</span>
00015 <span class="comment"> */</span>
00016
00017 <span class="keyword">using</span> <span class="keyword">namespace </span>std;
00018
00019 <span class="preprocessor">#include "inspircd_config.h"</span>
00020 <span class="preprocessor">#include "<a class="code" href="servers_8h.html">servers.h</a>"</span>
00021 <span class="preprocessor">#include "inspircd.h"</span>
00022 <span class="preprocessor">#include <unistd.h></span>
00023 <span class="preprocessor">#include <fcntl.h></span>
00024 <span class="preprocessor">#include <poll.h></span>
00025 <span class="preprocessor">#include <sys/errno.h></span>
00026 <span class="preprocessor">#include <sys/ioctl.h></span>
00027 <span class="preprocessor">#include <sys/utsname.h></span>
00028 <span class="preprocessor">#include <vector></span>
00029 <span class="preprocessor">#include <string></span>
00030 <span class="preprocessor">#include <deque></span>
00031 <span class="preprocessor">#include <sstream></span>
00032 <span class="preprocessor">#include <map></span>
00033 <span class="preprocessor">#include "inspstring.h"</span>
00034 <span class="preprocessor">#include "helperfuncs.h"</span>
00035 <span class="preprocessor">#include "<a class="code" href="connection_8h.html">connection.h</a>"</span>
00036
<a name="l00037"></a><a class="code" href="servers_8cpp.html#a0">00037</a> <span class="keyword">extern</span> time_t <a class="code" href="channels_8cpp.html#a36">TIME</a>;
<a name="l00038"></a><a class="code" href="servers_8cpp.html#a1">00038</a> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="servers_8cpp.html#a1">MaxConn</a>;
00039
<a name="l00040"></a><a class="code" href="servers_8cpp.html#a2">00040</a> <span class="keyword">extern</span> <a class="code" href="classserverrec.html">serverrec</a>* <a class="code" href="channels_8cpp.html#a34">me</a>[32];
00041
<a name="l00042"></a><a class="code" href="servers_8cpp.html#a3">00042</a> <span class="keyword">extern</span> <span class="keywordtype">bool</span> <a class="code" href="servers_8cpp.html#a3">has_been_netsplit</a>;
00043
<a name="l00044"></a><a class="code" href="servers_8cpp.html#a4">00044</a> std::deque<std::string> <a class="code" href="servers_8cpp.html#a4">xsums</a>;
00045
<a name="l00046"></a><a class="code" href="classserverrec.html#a0">00046</a> <a class="code" href="classserverrec.html#a0">serverrec::serverrec</a>()
00047 {
00048 strlcpy(<a class="code" href="classserverrec.html#o0">name</a>,<span class="stringliteral">""</span>,256);
00049 <a class="code" href="classserverrec.html#o1">pingtime</a> = 0;
00050 <a class="code" href="classconnection.html#o10">lastping</a> = <a class="code" href="channels_8cpp.html#a36">TIME</a>;
00051 <a class="code" href="classserverrec.html#o2">usercount_i</a> = <a class="code" href="classserverrec.html#o3">usercount</a> = <a class="code" href="classserverrec.html#o4">opercount</a> = <a class="code" href="classserverrec.html#o6">version</a> = 0;
00052 <a class="code" href="classserverrec.html#o5">hops_away</a> = 1;
00053 <a class="code" href="classconnection.html#o11">signon</a> = <a class="code" href="channels_8cpp.html#a36">TIME</a>;
00054 <a class="code" href="classserverrec.html#o7">jupiter</a> = <span class="keyword">false</span>;
00055 <a class="code" href="classconnection.html#o0">fd</a> = 0;
00056 <a class="code" href="classserverrec.html#o10">sync_soon</a> = <span class="keyword">false</span>;
00057 strlcpy(<a class="code" href="classserverrec.html#o9">nickserv</a>,<span class="stringliteral">""</span>,NICKMAX);
00058 <a class="code" href="classserverrec.html#o11">connectors</a>.clear();
00059 }
00060
00061
<a name="l00062"></a><a class="code" href="classserverrec.html#a2">00062</a> <a class="code" href="classserverrec.html#a2">serverrec::~serverrec</a>()
00063 {
00064 }
00065
<a name="l00066"></a><a class="code" href="classserverrec.html#a1">00066</a> <a class="code" href="classserverrec.html#a0">serverrec::serverrec</a>(<span class="keywordtype">char</span>* n, <span class="keywordtype">long</span> ver, <span class="keywordtype">bool</span> jupe)
00067 {
00068 strlcpy(<a class="code" href="classserverrec.html#o0">name</a>,n,256);
00069 <a class="code" href="classconnection.html#o10">lastping</a> = <a class="code" href="channels_8cpp.html#a36">TIME</a>;
00070 <a class="code" href="classserverrec.html#o2">usercount_i</a> = <a class="code" href="classserverrec.html#o3">usercount</a> = <a class="code" href="classserverrec.html#o4">opercount</a> = 0;
00071 <a class="code" href="classserverrec.html#o6">version</a> = ver;
00072 <a class="code" href="classserverrec.html#o5">hops_away</a> = 1;
00073 <a class="code" href="classconnection.html#o11">signon</a> = <a class="code" href="channels_8cpp.html#a36">TIME</a>;
00074 <a class="code" href="classserverrec.html#o7">jupiter</a> = jupe;
00075 <a class="code" href="classconnection.html#o0">fd</a> = 0;
00076 <a class="code" href="classserverrec.html#o10">sync_soon</a> = <span class="keyword">false</span>;
00077 strlcpy(<a class="code" href="classserverrec.html#o9">nickserv</a>,<span class="stringliteral">""</span>,NICKMAX);
00078 <a class="code" href="classserverrec.html#o11">connectors</a>.clear();
00079 }
00080
<a name="l00081"></a><a class="code" href="classserverrec.html#a3">00081</a> <span class="keywordtype">bool</span> <a class="code" href="classserverrec.html#a3">serverrec::CreateListener</a>(<span class="keywordtype">char</span>* newhost, <span class="keywordtype">int</span> p)
00082 {
00083 sockaddr_in host_address;
00084 <span class="keywordtype">int</span> flags;
00085 in_addr addy;
00086 <span class="keywordtype">int</span> on = 0;
00087 <span class="keyword">struct </span>linger linger = { 0 };
00088
00089 this-><a class="code" href="classconnection.html#o8">port</a> = p;
00090
00091 <a class="code" href="classconnection.html#o0">fd</a> = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
00092 <span class="keywordflow">if</span> (<a class="code" href="classconnection.html#o0">fd</a> <= 0)
00093 {
00094 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00095 }
00096
00097 setsockopt(<a class="code" href="classconnection.html#o0">fd</a>,SOL_SOCKET,SO_REUSEADDR,(<span class="keyword">const</span> <span class="keywordtype">char</span>*)&on,<span class="keyword">sizeof</span>(on));
00098 linger.l_onoff = 1;
00099 linger.l_linger = 1;
00100 setsockopt(<a class="code" href="classconnection.html#o0">fd</a>,SOL_SOCKET,SO_LINGER,(<span class="keyword">const</span> <span class="keywordtype">char</span>*)&linger,<span class="keyword">sizeof</span>(linger));
00101
00102 <span class="comment">// attempt to increase socket sendq and recvq as high as its possible</span>
00103 <span class="comment">// to get them on linux.</span>
00104 <span class="keywordtype">int</span> sendbuf = 32768;
00105 <span class="keywordtype">int</span> recvbuf = 32768;
00106 setsockopt(<a class="code" href="classconnection.html#o0">fd</a>,SOL_SOCKET,SO_SNDBUF,(<span class="keyword">const</span> <span class="keywordtype">void</span> *)&sendbuf,<span class="keyword">sizeof</span>(sendbuf));
00107 setsockopt(<a class="code" href="classconnection.html#o0">fd</a>,SOL_SOCKET,SO_RCVBUF,(<span class="keyword">const</span> <span class="keywordtype">void</span> *)&recvbuf,<span class="keyword">sizeof</span>(sendbuf));
00108
00109 memset((<span class="keywordtype">void</span>*)&host_address, 0, <span class="keyword">sizeof</span>(host_address));
00110
00111 host_address.sin_family = AF_INET;
00112
00113 <span class="keywordflow">if</span> (!strcmp(newhost,<span class="stringliteral">""</span>))
00114 {
00115 host_address.sin_addr.s_addr = htonl(INADDR_ANY);
00116 }
00117 <span class="keywordflow">else</span>
00118 {
00119 inet_aton(newhost,&addy);
00120 host_address.sin_addr = addy;
00121 }
00122
00123 host_address.sin_port = htons(p);
00124
00125 <span class="keywordflow">if</span> (bind(<a class="code" href="classconnection.html#o0">fd</a>,(sockaddr*)&host_address,<span class="keyword">sizeof</span>(host_address))<0)
00126 {
00127 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00128 }
00129
00130 <span class="comment">// make the socket non-blocking</span>
00131 flags = fcntl(<a class="code" href="classconnection.html#o0">fd</a>, F_GETFL, 0);
00132 fcntl(<a class="code" href="classconnection.html#o0">fd</a>, F_SETFL, flags | O_NONBLOCK);
00133
00134 this-><a class="code" href="classconnection.html#o8">port</a> = p;
00135
00136 listen(this->fd, <a class="code" href="servers_8cpp.html#a1">MaxConn</a>);
00137
00138 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00139 }
00140
00141
<a name="l00142"></a><a class="code" href="classserverrec.html#a4">00142</a> <span class="keywordtype">bool</span> <a class="code" href="classserverrec.html#a4">serverrec::BeginLink</a>(<span class="keywordtype">char</span>* targethost, <span class="keywordtype">int</span> newport, <span class="keywordtype">char</span>* password, <span class="keywordtype">char</span>* servername, <span class="keywordtype">int</span> myport)
00143 {
00144 <span class="keywordtype">char</span> connect[MAXBUF];
00145
00146 <a class="code" href="classircd__connector.html">ircd_connector</a> connector;
00147 <a class="code" href="classircd__connector.html">ircd_connector</a> *cn = this-><a class="code" href="classserverrec.html#a9">FindHost</a>(servername);
00148
00149
00150 <span class="keywordflow">if</span> (cn)
00151 {
00152 WriteOpers(<span class="stringliteral">"CONNECT aborted: Server %s already exists"</span>,servername);
00153 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00154 }
00155
00156
00157 <span class="keywordflow">if</span> (this-><a class="code" href="classconnection.html#o0">fd</a>)
00158 {
00159 <span class="keywordflow">if</span> (connector.<a class="code" href="classircd__connector.html#a1">MakeOutboundConnection</a>(targethost,newport))
00160 {
00161 <span class="comment">// targethost has been turned into an ip...</span>
00162 <span class="comment">// we dont want this as the server name.</span>
00163 connector.<a class="code" href="classircd__connector.html#a3">SetServerName</a>(servername);
00164 snprintf(connect,MAXBUF,<span class="stringliteral">"S %s %s %lu %s :%s"</span>,getservername().c_str(),password,(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>)myport,GetRevision().c_str(),getserverdesc().c_str());
00165 connector.<a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a4">STATE_NOAUTH_OUTBOUND</a>);
00166 connector.<a class="code" href="classircd__connector.html#a13">SetHostAndPort</a>(targethost, newport);
00167 this-><a class="code" href="classserverrec.html#o11">connectors</a>.push_back(connector);
00168 <span class="comment">// this packet isn't actually sent until the socket connects -- the STATE_NOAUTH_OUTBOUND state</span>
00169 <span class="comment">// queues outbound data until the socket is polled as writeable (e.g. the connection is established)</span>
00170 <span class="keywordflow">return</span> this-><a class="code" href="classserverrec.html#a7">SendPacket</a>(connect, servername);
00171 }
00172 <span class="keywordflow">else</span>
00173 {
00174 connector.<a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00175 WriteOpers(<span class="stringliteral">"Could not create outbound connection to %s:%d"</span>,targethost,newport);
00176 }
00177 }
00178 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00179 }
00180
00181
<a name="l00182"></a><a class="code" href="classserverrec.html#a5">00182</a> <span class="keywordtype">bool</span> <a class="code" href="classserverrec.html#a5">serverrec::MeshCookie</a>(<span class="keywordtype">char</span>* targethost, <span class="keywordtype">int</span> newport, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> cookie, <span class="keywordtype">char</span>* servername)
00183 {
00184 <span class="keywordtype">char</span> connect[MAXBUF];
00185
00186 <a class="code" href="classircd__connector.html">ircd_connector</a> connector;
00187
00188 WriteOpers(<span class="stringliteral">"Establishing meshed link to %s:%d"</span>,servername,newport);
00189
00190 <span class="keywordflow">if</span> (this-><a class="code" href="classconnection.html#o0">fd</a>)
00191 {
00192 <span class="keywordflow">if</span> (connector.<a class="code" href="classircd__connector.html#a1">MakeOutboundConnection</a>(targethost,newport))
00193 {
00194 <span class="comment">// targethost has been turned into an ip...</span>
00195 <span class="comment">// we dont want this as the server name.</span>
00196 connector.<a class="code" href="classircd__connector.html#a3">SetServerName</a>(servername);
00197 snprintf(connect,MAXBUF,<span class="stringliteral">"- %lu %s :%s"</span>,cookie,getservername().c_str(),getserverdesc().c_str());
00198 connector.<a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a4">STATE_NOAUTH_OUTBOUND</a>);
00199 connector.<a class="code" href="classircd__connector.html#a13">SetHostAndPort</a>(targethost, newport);
00200 this-><a class="code" href="classserverrec.html#o11">connectors</a>.push_back(connector);
00201 <span class="keywordflow">return</span> this-><a class="code" href="classserverrec.html#a7">SendPacket</a>(connect, servername);
00202 }
00203 <span class="keywordflow">else</span>
00204 {
00205 connector.<a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00206 WriteOpers(<span class="stringliteral">"Could not create outbound connection to %s:%d"</span>,targethost,newport);
00207 }
00208 }
00209 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00210 }
00211
<a name="l00212"></a><a class="code" href="classserverrec.html#a10">00212</a> <span class="keywordtype">bool</span> <a class="code" href="classserverrec.html#a10">serverrec::AddIncoming</a>(<span class="keywordtype">int</span> newfd, <span class="keywordtype">char</span>* targethost, <span class="keywordtype">int</span> sourceport)
00213 {
00214 <a class="code" href="classircd__connector.html">ircd_connector</a> connector;
00215
00216 <span class="comment">// targethost has been turned into an ip...</span>
00217 <span class="comment">// we dont want this as the server name.</span>
00218 connector.<a class="code" href="classircd__connector.html#a3">SetServerName</a>(targethost);
00219 connector.<a class="code" href="classircd__connector.html#a5">SetDescriptor</a>(newfd);
00220 connector.<a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a3">STATE_NOAUTH_INBOUND</a>);
00221 <span class="keywordtype">int</span> flags = fcntl(newfd, F_GETFL, 0);
00222 fcntl(newfd, F_SETFL, flags | O_NONBLOCK);
00223 <span class="keywordtype">int</span> sendbuf = 32768;
00224 <span class="keywordtype">int</span> recvbuf = 32768;
00225 setsockopt(newfd,SOL_SOCKET,SO_SNDBUF,(<span class="keyword">const</span> <span class="keywordtype">void</span> *)&sendbuf,<span class="keyword">sizeof</span>(sendbuf));
00226 setsockopt(newfd,SOL_SOCKET,SO_RCVBUF,(<span class="keyword">const</span> <span class="keywordtype">void</span> *)&recvbuf,<span class="keyword">sizeof</span>(sendbuf));
00227 connector.<a class="code" href="classircd__connector.html#a13">SetHostAndPort</a>(targethost, sourceport);
00228 connector.<a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a3">STATE_NOAUTH_INBOUND</a>);
00229 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"serverrec::AddIncoming() Added connection: %s:%d"</span>,targethost,sourceport);
00230 this-><a class="code" href="classserverrec.html#o11">connectors</a>.push_back(connector);
00231 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00232 }
00233
<a name="l00234"></a><a class="code" href="classserverrec.html#a6">00234</a> <span class="keywordtype">void</span> <a class="code" href="classserverrec.html#a6">serverrec::TerminateLink</a>(<span class="keywordtype">char</span>* targethost)
00235 {
00236 <span class="comment">// this locates the targethost in the serverrec::connectors vector of the class,</span>
00237 <span class="comment">// and terminates it by sending it an SQUIT token and closing its descriptor.</span>
00238 <span class="comment">// TerminateLink with a null string causes a terminate of ALL links</span>
00239 }
00240
00241 <span class="comment">// Returns a pointer to the connector for 'host'</span>
<a name="l00242"></a><a class="code" href="classserverrec.html#a9">00242</a> <a class="code" href="classircd__connector.html">ircd_connector</a>* <a class="code" href="classserverrec.html#a9">serverrec::FindHost</a>(std::string findhost)
00243 {
00244 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < this-><a class="code" href="classserverrec.html#o11">connectors</a>.size(); i++)
00245 {
00246 <span class="keywordflow">if</span> (this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].GetServerName() == findhost)
00247 {
00248 <span class="keywordflow">return</span> &this-><a class="code" href="classserverrec.html#o11">connectors</a>[i];
00249 }
00250 }
00251 <span class="keywordflow">return</span> NULL;
00252 }
00253
00254
00255 <span class="comment">// Checks to see if we can still reach a server at all (e.g. is it in ANY routing table?)</span>
<a name="l00256"></a><a class="code" href="servers_8cpp.html#a5">00256</a> <span class="keywordtype">bool</span> <a class="code" href="servers_8cpp.html#a5">IsRoutable</a>(std::string servername)
00257 {
00258 <span class="keywordtype">int</span> c = 0;
00259 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x = 0; x < 32; x++)
00260 <span class="keywordflow">if</span> (<a class="code" href="channels_8cpp.html#a34">me</a>[x])
00261 {
00262 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="channels_8cpp.html#a34">me</a>[x]-><a class="code" href="classserverrec.html#o11">connectors</a>.size(); i++)
00263 {
00264 <span class="keywordflow">if</span> ((<a class="code" href="channels_8cpp.html#a34">me</a>[x]-><a class="code" href="classserverrec.html#o11">connectors</a>[i].GetServerName() == servername) && (<a class="code" href="channels_8cpp.html#a34">me</a>[x]-><a class="code" href="classserverrec.html#o11">connectors</a>[i].GetState() != <a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>))
00265 {
00266 c++;
00267 }
00268 }
00269 }
00270 <span class="keywordflow">return</span> (c != 0);
00271 }
00272
00273
<a name="l00274"></a><a class="code" href="classserverrec.html#a11">00274</a> <span class="keywordtype">void</span> <a class="code" href="classserverrec.html#a11">serverrec::FlushWriteBuffers</a>()
00275 {
00276 <span class="keywordtype">char</span> buffer[MAXBUF];
00277 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < this-><a class="code" href="classserverrec.html#o11">connectors</a>.size(); i++)
00278 {
00279 <span class="comment">// don't try and ping a NOAUTH_OUTBOUND state, its not authed yet!</span>
00280 <span class="keywordflow">if</span> ((this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].GetState() == <a class="code" href="connection_8h.html#a4">STATE_NOAUTH_OUTBOUND</a>) && (<a class="code" href="channels_8cpp.html#a36">TIME</a> > this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].age+30))
00281 {
00282 <span class="comment">// however if we reach this timer its connected timed out :)</span>
00283 WriteOpers(<span class="stringliteral">"*** Connection to %s timed out"</span>,this->connectors[i].GetServerName().c_str());
00284 snprintf(buffer,MAXBUF,<span class="stringliteral">"& %s"</span>,this->connectors[i].GetServerName().c_str());
00285 NetSendToAllExcept(this->connectors[i].GetServerName().c_str(),buffer);
00286 DoSplit(this->connectors[i].GetServerName().c_str());
00287 <span class="keywordflow">return</span>;
00288 }
00289 <span class="keywordflow">if</span> ((this->connectors[i].GetState() == <a class="code" href="connection_8h.html#a3">STATE_NOAUTH_INBOUND</a>) && (<a class="code" href="channels_8cpp.html#a36">TIME</a> > this->connectors[i].age+30))
00290 {
00291 WriteOpers(<span class="stringliteral">"*** Connection from %s timed out"</span>,this->connectors[i].GetServerName().c_str());
00292 snprintf(buffer,MAXBUF,<span class="stringliteral">"& %s"</span>,this->connectors[i].GetServerName().c_str());
00293 NetSendToAllExcept(this->connectors[i].GetServerName().c_str(),buffer);
00294 DoSplit(this->connectors[i].GetServerName().c_str());
00295 <span class="keywordflow">return</span>;
00296 }
00297 <span class="keywordflow">if</span> (this->connectors[i].GetState() != <a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>)
00298 {
00299 <span class="keywordflow">if</span> (!this->connectors[i].CheckPing())
00300 {
00301 WriteOpers(<span class="stringliteral">"*** Lost single connection to %s: Ping timeout"</span>,this->connectors[i].GetServerName().c_str());
00302 this->connectors[i].CloseConnection();
00303 this->connectors[i].SetState(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00304 <span class="keywordflow">if</span> (!<a class="code" href="servers_8cpp.html#a5">IsRoutable</a>(this->connectors[i].GetServerName()))
00305 {
00306 WriteOpers(<span class="stringliteral">"*** Server %s is no longer routable, disconnecting."</span>,this->connectors[i].GetServerName().c_str());
00307 snprintf(buffer,MAXBUF,<span class="stringliteral">"& %s"</span>,this->connectors[i].GetServerName().c_str());
00308 NetSendToAllExcept(this->connectors[i].GetServerName().c_str(),buffer);
00309 DoSplit(this->connectors[i].GetServerName().c_str());
00310 }
00311 <a class="code" href="servers_8cpp.html#a3">has_been_netsplit</a> = <span class="keyword">true</span>;
00312 }
00313 }
00314 <span class="keywordflow">if</span> ((this->connectors[i].GetWriteError() !=<span class="stringliteral">""</span>) && (this->connectors[i].GetState() != <a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>))
00315 {
00316 <span class="comment">// if we're here the write() caused an error, we cannot proceed</span>
00317 WriteOpers(<span class="stringliteral">"*** Lost single connection to %s, link inactive and retrying: %s"</span>,this->connectors[i].GetServerName().c_str(),this->connectors[i].GetWriteError().c_str());
00318 this->connectors[i].CloseConnection();
00319 this->connectors[i].SetState(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00320 <span class="keywordflow">if</span> (!<a class="code" href="servers_8cpp.html#a5">IsRoutable</a>(this->connectors[i].GetServerName()))
00321 {
00322 WriteOpers(<span class="stringliteral">"*** Server %s is no longer routable, disconnecting."</span>,this->connectors[i].GetServerName().c_str());
00323 snprintf(buffer,MAXBUF,<span class="stringliteral">"& %s"</span>,this->connectors[i].GetServerName().c_str());
00324 NetSendToAllExcept(this->connectors[i].GetServerName().c_str(),buffer);
00325 DoSplit(this->connectors[i].GetServerName().c_str());
00326 }
00327 <a class="code" href="servers_8cpp.html#a3">has_been_netsplit</a> = <span class="keyword">true</span>;
00328 }
00329 <span class="keywordflow">if</span> ((this->connectors[i].HasBufferedOutput()) && (this->connectors[i].GetState() != <a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>))
00330 {
00331 <span class="keywordflow">if</span> (!this->connectors[i].FlushWriteBuf())
00332 {
00333 <span class="comment">// if we're here the write() caused an error, we cannot proceed</span>
00334 WriteOpers(<span class="stringliteral">"*** Lost single connection to %s, link inactive and retrying: %s"</span>,this->connectors[i].GetServerName().c_str(),this->connectors[i].GetWriteError().c_str());
00335 this->connectors[i].CloseConnection();
00336 this->connectors[i].SetState(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00337 <span class="keywordflow">if</span> (!<a class="code" href="servers_8cpp.html#a5">IsRoutable</a>(this->connectors[i].GetServerName()))
00338 {
00339 WriteOpers(<span class="stringliteral">"*** Server %s is no longer routable, disconnecting."</span>,this->connectors[i].GetServerName().c_str());
00340 snprintf(buffer,MAXBUF,<span class="stringliteral">"& %s"</span>,this->connectors[i].GetServerName().c_str());
00341 NetSendToAllExcept(this->connectors[i].GetServerName().c_str(),buffer);
00342 DoSplit(this->connectors[i].GetServerName().c_str());
00343 }
00344 <a class="code" href="servers_8cpp.html#a3">has_been_netsplit</a> = <span class="keyword">true</span>;
00345 }
00346 }
00347 }
00348 }
00349
<a name="l00350"></a><a class="code" href="classserverrec.html#a7">00350</a> <span class="keywordtype">bool</span> <a class="code" href="classserverrec.html#a7">serverrec::SendPacket</a>(<span class="keywordtype">char</span> *message, <span class="keyword">const</span> <span class="keywordtype">char</span>* sendhost)
00351 {
00352 <span class="keywordflow">if</span> ((!message) || (!sendhost))
00353 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00354
00355 <a class="code" href="classircd__connector.html">ircd_connector</a>* cn = this-><a class="code" href="classserverrec.html#a9">FindHost</a>(sendhost);
00356
00357 <span class="keywordflow">if</span> (!strchr(message,<span class="charliteral">'\n'</span>))
00358 {
00359 strlcat(message,<span class="stringliteral">"\n"</span>,MAXBUF);
00360 }
00361
00362 <span class="keywordflow">if</span> (cn)
00363 {
00364 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"main: serverrec::SendPacket() sent '%s' to %s"</span>,message,cn-><a class="code" href="classircd__connector.html#a2">GetServerName</a>().c_str());
00365
00366 <span class="keywordflow">if</span> (cn-><a class="code" href="classircd__connector.html#a6">GetState</a>() == <a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>)
00367 {
00368 <span class="comment">// fix: can only route one hop to avoid a loop</span>
00369 <span class="keywordflow">if</span> (strncmp(message,<span class="stringliteral">"R "</span>,2))
00370 {
00371 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Not a double reroute"</span>);
00372 <span class="comment">// this route is down, we must re-route the packet through an available point in the mesh.</span>
00373 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> k = 0; k < this-><a class="code" href="classserverrec.html#o11">connectors</a>.size(); k++)
00374 {
00375 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Check connector %d: %s"</span>,k,this->connectors[k].GetServerName().c_str());
00376 <span class="comment">// search for another point in the mesh which can 'reach' where we want to go</span>
00377 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> m = 0; m < this-><a class="code" href="classserverrec.html#o11">connectors</a>[k].routes.size(); m++)
00378 {
00379 <span class="keywordflow">if</span> (!strcasecmp(this->connectors[k].routes[m].c_str(),sendhost))
00380 {
00381 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Found alternative route for packet: %s"</span>,this->connectors[k].GetServerName().c_str());
00382 <span class="keywordtype">char</span> buffer[MAXBUF];
00383 snprintf(buffer,MAXBUF,<span class="stringliteral">"R %s %s"</span>,sendhost,message);
00384 this-><a class="code" href="classserverrec.html#a7">SendPacket</a>(buffer,this->connectors[k].GetServerName().c_str());
00385 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00386 }
00387 }
00388 }
00389 }
00390 <span class="keywordtype">char</span> buffer[MAXBUF];
00391 snprintf(buffer,MAXBUF,<span class="stringliteral">"& %s"</span>,sendhost);
00392 WriteOpers(<span class="stringliteral">"*** All connections to %s lost."</span>,sendhost);
00393 NetSendToAllExcept(sendhost,buffer);
00394 DoSplit(sendhost);
00395 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00396 }
00397
00398 <span class="comment">// returns false if the packet could not be sent (e.g. target host down)</span>
00399 <span class="keywordflow">if</span> (!cn-><a class="code" href="classircd__connector.html#a21">AddWriteBuf</a>(message))
00400 {
00401 <span class="comment">// if we're here, there was an error pending, and the send cannot proceed</span>
00402 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"cn->AddWriteBuf() failed for serverrec::SendPacket(): %s"</span>,cn-><a class="code" href="classircd__connector.html#a24">GetWriteError</a>().c_str());
00403 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Disabling connector: %s"</span>,cn-><a class="code" href="classircd__connector.html#a2">GetServerName</a>().c_str());
00404 cn-><a class="code" href="classircd__connector.html#a14">CloseConnection</a>();
00405 cn-><a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00406 WriteOpers(<span class="stringliteral">"*** Lost single connection to %s, link inactive and retrying: %s"</span>,cn-><a class="code" href="classircd__connector.html#a2">GetServerName</a>().c_str(),cn-><a class="code" href="classircd__connector.html#a24">GetWriteError</a>().c_str());
00407 <span class="comment">// retry the packet along a new route so either arrival OR failure are gauranteed (bugfix)</span>
00408 <span class="keywordflow">return</span> this-><a class="code" href="classserverrec.html#a7">SendPacket</a>(message,sendhost);
00409 }
00410 <span class="keywordflow">if</span> (!cn-><a class="code" href="classircd__connector.html#a22">FlushWriteBuf</a>())
00411 {
00412 <span class="comment">// if we're here the write() caused an error, we cannot proceed</span>
00413 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"cn->FlushWriteBuf() failed for serverrec::SendPacket(): %s"</span>,cn-><a class="code" href="classircd__connector.html#a24">GetWriteError</a>().c_str());
00414 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Disabling connector: %s"</span>,cn-><a class="code" href="classircd__connector.html#a2">GetServerName</a>().c_str());
00415 cn-><a class="code" href="classircd__connector.html#a14">CloseConnection</a>();
00416 cn-><a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00417 WriteOpers(<span class="stringliteral">"*** Lost single connection to %s, link inactive and retrying: %s"</span>,cn-><a class="code" href="classircd__connector.html#a2">GetServerName</a>().c_str(),cn-><a class="code" href="classircd__connector.html#a24">GetWriteError</a>().c_str());
00418 <span class="comment">// retry the packet along a new route so either arrival OR failure are gauranteed</span>
00419 <span class="keywordflow">return</span> this-><a class="code" href="classserverrec.html#a7">SendPacket</a>(message,sendhost);
00420 }
00421 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00422 }
00423 }
00424
<a name="l00425"></a><a class="code" href="servers_8cpp.html#a6">00425</a> <span class="keywordtype">bool</span> <a class="code" href="servers_8cpp.html#a6">already_have_sum</a>(std::string sum)
00426 {
00427 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="servers_8cpp.html#a4">xsums</a>.size(); i++)
00428 {
00429 <span class="keywordflow">if</span> (<a class="code" href="servers_8cpp.html#a4">xsums</a>[i] == sum)
00430 {
00431 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00432 }
00433 }
00434 <span class="keywordflow">if</span> (<a class="code" href="servers_8cpp.html#a4">xsums</a>.size() >= 128)
00435 {
00436 <a class="code" href="servers_8cpp.html#a4">xsums</a>.pop_front();
00437 }
00438 <a class="code" href="servers_8cpp.html#a4">xsums</a>.push_back(sum);
00439 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00440 }
00441
00442 <span class="comment">// receives a packet from any where there is data waiting, first come, first served</span>
00443 <span class="comment">// fills the message and host values with the host where the data came from.</span>
00444
<a name="l00445"></a><a class="code" href="classserverrec.html#a8">00445</a> <span class="keywordtype">bool</span> <a class="code" href="classserverrec.html#a8">serverrec::RecvPacket</a>(std::deque<std::string> &messages, <span class="keywordtype">char</span>* recvhost,std::deque<std::string> &sums)
00446 {
00447 <span class="keywordtype">char</span> data[65536],buffer[MAXBUF];
00448 memset(data, 0, 65536);
00449 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < this-><a class="code" href="classserverrec.html#o11">connectors</a>.size(); i++)
00450 {
00451 <span class="keywordflow">if</span> (this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].GetState() != <a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>)
00452 {
00453 <span class="comment">// returns false if the packet could not be sent (e.g. target host down)</span>
00454 <span class="keywordtype">int</span> rcvsize = 0;
00455
00456 <span class="comment">// check if theres any data on this socket</span>
00457 <span class="comment">// if not, continue onwards to the next.</span>
00458 pollfd polls;
00459 polls.fd = this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].GetDescriptor();
00460 polls.events = POLLIN;
00461 <span class="keywordtype">int</span> ret = poll(&polls,1,1);
00462 <span class="keywordflow">if</span> (ret <= 0) <span class="keywordflow">continue</span>;
00463
00464 rcvsize = recv(this->connectors[i].GetDescriptor(),data,65000,0);
00465 data[rcvsize] = <span class="charliteral">'\0'</span>;
00466 <span class="keywordflow">if</span> (rcvsize == 0)
00467 {
00468 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"recv() failed for serverrec::RecvPacket(): EOF"</span>);
00469 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Disabling connector: %s"</span>,this->connectors[i].GetServerName().c_str());
00470 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].CloseConnection();
00471 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].SetState(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00472 <span class="keywordflow">if</span> (!<a class="code" href="servers_8cpp.html#a5">IsRoutable</a>(this->connectors[i].GetServerName()))
00473 {
00474 WriteOpers(<span class="stringliteral">"*** Server %s is no longer routable, disconnecting (EOF)"</span>,this->connectors[i].GetServerName().c_str());
00475 snprintf(buffer,MAXBUF,<span class="stringliteral">"& %s"</span>,this->connectors[i].GetServerName().c_str());
00476 NetSendToAllExcept(this->connectors[i].GetServerName().c_str(),buffer);
00477 DoSplit(this->connectors[i].GetServerName().c_str());
00478 }
00479 <a class="code" href="servers_8cpp.html#a3">has_been_netsplit</a> = <span class="keyword">true</span>;
00480 }
00481 <span class="keywordflow">if</span> (rcvsize == -1)
00482 {
00483 <span class="keywordflow">if</span> (errno != EAGAIN)
00484 {
00485 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"recv() failed for serverrec::RecvPacket(): %s"</span>,strerror(errno));
00486 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Disabling connector: %s"</span>,this->connectors[i].GetServerName().c_str());
00487 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].CloseConnection();
00488 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].SetState(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00489 <span class="keywordflow">if</span> (!<a class="code" href="servers_8cpp.html#a5">IsRoutable</a>(this->connectors[i].GetServerName()))
00490 {
00491 WriteOpers(<span class="stringliteral">"*** Server %s is no longer routable, disconnecting."</span>,this->connectors[i].GetServerName().c_str());
00492 snprintf(buffer,MAXBUF,<span class="stringliteral">"& %s"</span>,this->connectors[i].GetServerName().c_str());
00493 NetSendToAllExcept(this->connectors[i].GetServerName().c_str(),buffer);
00494 DoSplit(this->connectors[i].GetServerName().c_str());
00495 }
00496 <a class="code" href="servers_8cpp.html#a3">has_been_netsplit</a> = <span class="keyword">true</span>;
00497 }
00498 }
00499 <span class="keywordtype">int</span> pushed = 0;
00500 <span class="keywordflow">if</span> (rcvsize > 0)
00501 {
00502 <span class="keywordflow">if</span> (!this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].AddBuffer(data))
00503 {
00504 WriteOpers(<span class="stringliteral">"*** Read buffer for %s exceeds maximum, closing connection!"</span>,this->connectors[i].GetServerName().c_str());
00505 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].CloseConnection();
00506 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].SetState(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00507 <span class="keywordflow">if</span> (!<a class="code" href="servers_8cpp.html#a5">IsRoutable</a>(this->connectors[i].GetServerName()))
00508 {
00509 WriteOpers(<span class="stringliteral">"*** Server %s is no longer routable, disconnecting."</span>,this->connectors[i].GetServerName().c_str());
00510 snprintf(buffer,MAXBUF,<span class="stringliteral">"& %s"</span>,this->connectors[i].GetServerName().c_str());
00511 NetSendToAllExcept(this->connectors[i].GetServerName().c_str(),buffer);
00512 DoSplit(this->connectors[i].GetServerName().c_str());
00513 }
00514 <a class="code" href="servers_8cpp.html#a3">has_been_netsplit</a> = <span class="keyword">true</span>;
00515 }
00516 <span class="keywordflow">if</span> (this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].BufferIsComplete())
00517 {
00518 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].ResetPing();
00519 <span class="keywordflow">while</span> (this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].BufferIsComplete())
00520 {
00521 std::string text = this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].GetBuffer();
00522 <span class="keywordflow">if</span> (text != <span class="stringliteral">""</span>)
00523 {
00524 <span class="keywordflow">if</span> ((text[0] == <span class="charliteral">':'</span>) && (text.find(<span class="stringliteral">" "</span>) != std::string::npos))
00525 {
00526 std::string orig = text;
00527 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Original: %s"</span>,text.c_str());
00528 std::string sum = text.substr(1,text.find(<span class="stringliteral">" "</span>)-1);
00529 text = text.substr(text.find(<span class="stringliteral">" "</span>)+1,text.length());
00530 std::string possible_token = text.substr(1,text.find(<span class="stringliteral">" "</span>)-1);
00531 <span class="keywordflow">if</span> (possible_token.length() > 1)
00532 {
00533 sums.push_back(<span class="stringliteral">"*"</span>);
00534 text = orig;
00535 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Non-mesh, non-tokenized string passed up the chain"</span>);
00536 }
00537 <span class="keywordflow">else</span>
00538 {
00539 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Packet sum: '%s'"</span>,sum.c_str());
00540 <span class="keywordflow">if</span> ((<a class="code" href="servers_8cpp.html#a6">already_have_sum</a>(sum)) && (sum != <span class="stringliteral">"*"</span>))
00541 {
00542 <span class="comment">// we don't accept dupes</span>
00543 <span class="keywordflow">continue</span>;
00544 }
00545 sums.push_back(sum.c_str());
00546 }
00547 }
00548 <span class="keywordflow">else</span> sums.push_back(<span class="stringliteral">"*"</span>);
00549 messages.push_back(text.c_str());
00550 strlcpy(recvhost,this->connectors[i].GetServerName().c_str(),160);
00551 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"serverrec::RecvPacket() %d:%s->%s"</span>,pushed++,recvhost,text.c_str());
00552 }
00553 }
00554 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00555 }
00556 }
00557 }
00558 }
00559 <span class="comment">// nothing new yet -- message and host will be undefined</span>
00560 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00561 }
00562
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon May 30 05:15:21 2005 for InspIRCd by
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