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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> std::deque<std::string> <a class="code" href="servers_8cpp.html#a2">xsums</a>;
00041
<a name="l00042"></a><a class="code" href="classserverrec.html#a0">00042</a> <a class="code" href="classserverrec.html#a0">serverrec::serverrec</a>()
00043 {
00044 strlcpy(<a class="code" href="classserverrec.html#o0">name</a>,<span class="stringliteral">""</span>,256);
00045 <a class="code" href="classserverrec.html#o1">pingtime</a> = 0;
00046 <a class="code" href="classconnection.html#o10">lastping</a> = <a class="code" href="channels_8cpp.html#a36">TIME</a>;
00047 <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;
00048 <a class="code" href="classserverrec.html#o5">hops_away</a> = 1;
00049 <a class="code" href="classconnection.html#o11">signon</a> = <a class="code" href="channels_8cpp.html#a36">TIME</a>;
00050 <a class="code" href="classserverrec.html#o7">jupiter</a> = <span class="keyword">false</span>;
00051 <a class="code" href="classconnection.html#o0">fd</a> = 0;
00052 <a class="code" href="classserverrec.html#o10">sync_soon</a> = <span class="keyword">false</span>;
00053 strlcpy(<a class="code" href="classserverrec.html#o9">nickserv</a>,<span class="stringliteral">""</span>,NICKMAX);
00054 <a class="code" href="classserverrec.html#o11">connectors</a>.clear();
00055 }
00056
00057
<a name="l00058"></a><a class="code" href="classserverrec.html#a2">00058</a> <a class="code" href="classserverrec.html#a2">serverrec::~serverrec</a>()
00059 {
00060 }
00061
<a name="l00062"></a><a class="code" href="classserverrec.html#a1">00062</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)
00063 {
00064 strlcpy(<a class="code" href="classserverrec.html#o0">name</a>,n,256);
00065 <a class="code" href="classconnection.html#o10">lastping</a> = <a class="code" href="channels_8cpp.html#a36">TIME</a>;
00066 <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;
00067 <a class="code" href="classserverrec.html#o6">version</a> = ver;
00068 <a class="code" href="classserverrec.html#o5">hops_away</a> = 1;
00069 <a class="code" href="classconnection.html#o11">signon</a> = <a class="code" href="channels_8cpp.html#a36">TIME</a>;
00070 <a class="code" href="classserverrec.html#o7">jupiter</a> = jupe;
00071 <a class="code" href="classconnection.html#o0">fd</a> = 0;
00072 <a class="code" href="classserverrec.html#o10">sync_soon</a> = <span class="keyword">false</span>;
00073 strlcpy(<a class="code" href="classserverrec.html#o9">nickserv</a>,<span class="stringliteral">""</span>,NICKMAX);
00074 <a class="code" href="classserverrec.html#o11">connectors</a>.clear();
00075 }
00076
<a name="l00077"></a><a class="code" href="classserverrec.html#a3">00077</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)
00078 {
00079 sockaddr_in host_address;
00080 <span class="keywordtype">int</span> flags;
00081 in_addr addy;
00082 <span class="keywordtype">int</span> on = 0;
00083 <span class="keyword">struct </span>linger linger = { 0 };
00084
00085 this-><a class="code" href="classconnection.html#o8">port</a> = p;
00086
00087 <a class="code" href="classconnection.html#o0">fd</a> = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
00088 <span class="keywordflow">if</span> (<a class="code" href="classconnection.html#o0">fd</a> <= 0)
00089 {
00090 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00091 }
00092
00093 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));
00094 linger.l_onoff = 1;
00095 linger.l_linger = 1;
00096 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));
00097
00098 <span class="comment">// attempt to increase socket sendq and recvq as high as its possible</span>
00099 <span class="comment">// to get them on linux.</span>
00100 <span class="keywordtype">int</span> sendbuf = 32768;
00101 <span class="keywordtype">int</span> recvbuf = 32768;
00102 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));
00103 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));
00104
00105 memset((<span class="keywordtype">void</span>*)&host_address, 0, <span class="keyword">sizeof</span>(host_address));
00106
00107 host_address.sin_family = AF_INET;
00108
00109 <span class="keywordflow">if</span> (!strcmp(newhost,<span class="stringliteral">""</span>))
00110 {
00111 host_address.sin_addr.s_addr = htonl(INADDR_ANY);
00112 }
00113 <span class="keywordflow">else</span>
00114 {
00115 inet_aton(newhost,&addy);
00116 host_address.sin_addr = addy;
00117 }
00118
00119 host_address.sin_port = htons(p);
00120
00121 <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)
00122 {
00123 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00124 }
00125
00126 <span class="comment">// make the socket non-blocking</span>
00127 flags = fcntl(<a class="code" href="classconnection.html#o0">fd</a>, F_GETFL, 0);
00128 fcntl(<a class="code" href="classconnection.html#o0">fd</a>, F_SETFL, flags | O_NONBLOCK);
00129
00130 this-><a class="code" href="classconnection.html#o8">port</a> = p;
00131
00132 listen(this->fd, <a class="code" href="servers_8cpp.html#a1">MaxConn</a>);
00133
00134 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00135 }
00136
00137
<a name="l00138"></a><a class="code" href="classserverrec.html#a4">00138</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)
00139 {
00140 <span class="keywordtype">char</span> connect[MAXBUF];
00141
00142 <a class="code" href="classircd__connector.html">ircd_connector</a> connector;
00143 <a class="code" href="classircd__connector.html">ircd_connector</a> *cn = this-><a class="code" href="classserverrec.html#a9">FindHost</a>(servername);
00144
00145
00146 <span class="keywordflow">if</span> (cn)
00147 {
00148 WriteOpers(<span class="stringliteral">"CONNECT aborted: Server %s already exists"</span>,servername);
00149 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00150 }
00151
00152
00153 <span class="keywordflow">if</span> (this-><a class="code" href="classconnection.html#o0">fd</a>)
00154 {
00155 <span class="keywordflow">if</span> (connector.<a class="code" href="classircd__connector.html#a1">MakeOutboundConnection</a>(targethost,newport))
00156 {
00157 <span class="comment">// targethost has been turned into an ip...</span>
00158 <span class="comment">// we dont want this as the server name.</span>
00159 connector.<a class="code" href="classircd__connector.html#a3">SetServerName</a>(servername);
00160 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());
00161 connector.<a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a4">STATE_NOAUTH_OUTBOUND</a>);
00162 connector.<a class="code" href="classircd__connector.html#a13">SetHostAndPort</a>(targethost, newport);
00163 this-><a class="code" href="classserverrec.html#o11">connectors</a>.push_back(connector);
00164 <span class="keywordflow">return</span> this-><a class="code" href="classserverrec.html#a7">SendPacket</a>(connect, servername);
00165 }
00166 <span class="keywordflow">else</span>
00167 {
00168 connector.<a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00169 WriteOpers(<span class="stringliteral">"Could not create outbound connection to %s:%d"</span>,targethost,newport);
00170 }
00171 }
00172 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00173 }
00174
00175
<a name="l00176"></a><a class="code" href="classserverrec.html#a5">00176</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)
00177 {
00178 <span class="keywordtype">char</span> connect[MAXBUF];
00179
00180 <a class="code" href="classircd__connector.html">ircd_connector</a> connector;
00181
00182 WriteOpers(<span class="stringliteral">"Establishing meshed link to %s:%d"</span>,servername,newport);
00183
00184 <span class="keywordflow">if</span> (this-><a class="code" href="classconnection.html#o0">fd</a>)
00185 {
00186 <span class="keywordflow">if</span> (connector.<a class="code" href="classircd__connector.html#a1">MakeOutboundConnection</a>(targethost,newport))
00187 {
00188 <span class="comment">// targethost has been turned into an ip...</span>
00189 <span class="comment">// we dont want this as the server name.</span>
00190 connector.<a class="code" href="classircd__connector.html#a3">SetServerName</a>(servername);
00191 snprintf(connect,MAXBUF,<span class="stringliteral">"- %lu %s :%s"</span>,cookie,getservername().c_str(),getserverdesc().c_str());
00192 connector.<a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a4">STATE_NOAUTH_OUTBOUND</a>);
00193 connector.<a class="code" href="classircd__connector.html#a13">SetHostAndPort</a>(targethost, newport);
00194 connector.<a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a1">STATE_CONNECTED</a>);
00195 this-><a class="code" href="classserverrec.html#o11">connectors</a>.push_back(connector);
00196 <span class="keywordflow">return</span> this-><a class="code" href="classserverrec.html#a7">SendPacket</a>(connect, servername);
00197 }
00198 <span class="keywordflow">else</span>
00199 {
00200 connector.<a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00201 WriteOpers(<span class="stringliteral">"Could not create outbound connection to %s:%d"</span>,targethost,newport);
00202 }
00203 }
00204 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00205 }
00206
<a name="l00207"></a><a class="code" href="classserverrec.html#a10">00207</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)
00208 {
00209 <a class="code" href="classircd__connector.html">ircd_connector</a> connector;
00210
00211 <span class="comment">// targethost has been turned into an ip...</span>
00212 <span class="comment">// we dont want this as the server name.</span>
00213 connector.<a class="code" href="classircd__connector.html#a3">SetServerName</a>(targethost);
00214 connector.<a class="code" href="classircd__connector.html#a5">SetDescriptor</a>(newfd);
00215 connector.<a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a3">STATE_NOAUTH_INBOUND</a>);
00216 <span class="keywordtype">int</span> flags = fcntl(newfd, F_GETFL, 0);
00217 fcntl(newfd, F_SETFL, flags | O_NONBLOCK);
00218 <span class="keywordtype">int</span> sendbuf = 32768;
00219 <span class="keywordtype">int</span> recvbuf = 32768;
00220 setsockopt(newfd,SOL_SOCKET,SO_SNDBUF,(<span class="keyword">const</span> <span class="keywordtype">void</span> *)&sendbuf,<span class="keyword">sizeof</span>(sendbuf));
00221 setsockopt(newfd,SOL_SOCKET,SO_RCVBUF,(<span class="keyword">const</span> <span class="keywordtype">void</span> *)&recvbuf,<span class="keyword">sizeof</span>(sendbuf));
00222 connector.<a class="code" href="classircd__connector.html#a13">SetHostAndPort</a>(targethost, sourceport);
00223 connector.<a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a3">STATE_NOAUTH_INBOUND</a>);
00224 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"serverrec::AddIncoming() Added connection: %s:%d"</span>,targethost,sourceport);
00225 this-><a class="code" href="classserverrec.html#o11">connectors</a>.push_back(connector);
00226 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00227 }
00228
<a name="l00229"></a><a class="code" href="classserverrec.html#a6">00229</a> <span class="keywordtype">void</span> <a class="code" href="classserverrec.html#a6">serverrec::TerminateLink</a>(<span class="keywordtype">char</span>* targethost)
00230 {
00231 <span class="comment">// this locates the targethost in the serverrec::connectors vector of the class,</span>
00232 <span class="comment">// and terminates it by sending it an SQUIT token and closing its descriptor.</span>
00233 <span class="comment">// TerminateLink with a null string causes a terminate of ALL links</span>
00234 }
00235
00236 <span class="comment">// Returns a pointer to the connector for 'host'</span>
<a name="l00237"></a><a class="code" href="classserverrec.html#a9">00237</a> <a class="code" href="classircd__connector.html">ircd_connector</a>* <a class="code" href="classserverrec.html#a9">serverrec::FindHost</a>(std::string findhost)
00238 {
00239 <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++)
00240 {
00241 <span class="keywordflow">if</span> (this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].GetServerName() == findhost)
00242 {
00243 <span class="keywordflow">return</span> &this-><a class="code" href="classserverrec.html#o11">connectors</a>[i];
00244 }
00245 }
00246 <span class="keywordflow">return</span> NULL;
00247 }
00248
<a name="l00249"></a><a class="code" href="classserverrec.html#a11">00249</a> <span class="keywordtype">void</span> <a class="code" href="classserverrec.html#a11">serverrec::FlushWriteBuffers</a>()
00250 {
00251 <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++)
00252 {
00253 <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>)
00254 {
00255 <span class="keywordflow">if</span> (!this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].CheckPing())
00256 {
00257 WriteOpers(<span class="stringliteral">"*** Lost single connection to %s: Ping timeout"</span>,this->connectors[i].GetServerName().c_str());
00258 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].CloseConnection();
00259 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].SetState(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00260 }
00261 }
00262 <span class="keywordflow">if</span> (this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].HasBufferedOutput())
00263 {
00264 <span class="keywordflow">if</span> (!this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].FlushWriteBuf())
00265 {
00266 <span class="comment">// if we're here the write() caused an error, we cannot proceed</span>
00267 WriteOpers(<span class="stringliteral">"*** Lost single connection to %s, link inactive and retrying: %s"</span>,this->connectors[i].GetServerName().c_str(),this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].GetWriteError().c_str());
00268 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].CloseConnection();
00269 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].SetState(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00270 }
00271 }
00272 }
00273 }
00274
<a name="l00275"></a><a class="code" href="classserverrec.html#a7">00275</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)
00276 {
00277 <span class="keywordflow">if</span> ((!message) || (!sendhost))
00278 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00279
00280 <a class="code" href="classircd__connector.html">ircd_connector</a>* cn = this-><a class="code" href="classserverrec.html#a9">FindHost</a>(sendhost);
00281
00282 <span class="keywordflow">if</span> (!strchr(message,<span class="charliteral">'\n'</span>))
00283 {
00284 strlcat(message,<span class="stringliteral">"\n"</span>,MAXBUF);
00285 }
00286
00287 <span class="keywordflow">if</span> (cn)
00288 {
00289 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());
00290
00291 <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>)
00292 {
00293 <span class="comment">// fix: can only route one hop to avoid a loop</span>
00294 <span class="keywordflow">if</span> (strncmp(message,<span class="stringliteral">"R "</span>,2))
00295 {
00296 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Not a double reroute"</span>);
00297 <span class="comment">// this route is down, we must re-route the packet through an available point in the mesh.</span>
00298 <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++)
00299 {
00300 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());
00301 <span class="comment">// search for another point in the mesh which can 'reach' where we want to go</span>
00302 <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++)
00303 {
00304 <span class="keywordflow">if</span> (!strcasecmp(this->connectors[k].routes[m].c_str(),sendhost))
00305 {
00306 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());
00307 <span class="keywordtype">char</span> buffer[MAXBUF];
00308 snprintf(buffer,MAXBUF,<span class="stringliteral">"R %s %s"</span>,sendhost,message);
00309 this-><a class="code" href="classserverrec.html#a7">SendPacket</a>(buffer,this->connectors[k].GetServerName().c_str());
00310 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00311 }
00312 }
00313 }
00314 }
00315 <span class="keywordtype">char</span> buffer[MAXBUF];
00316 snprintf(buffer,MAXBUF,<span class="stringliteral">"& %s"</span>,sendhost);
00317 WriteOpers(<span class="stringliteral">"*** All connections to %s lost."</span>,sendhost);
00318 NetSendToAllExcept(sendhost,buffer);
00319 DoSplit(sendhost);
00320 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00321 }
00322
00323 <span class="comment">// returns false if the packet could not be sent (e.g. target host down)</span>
00324 <span class="keywordflow">if</span> (!cn-><a class="code" href="classircd__connector.html#a21">AddWriteBuf</a>(message))
00325 {
00326 <span class="comment">// if we're here, there was an error pending, and the send cannot proceed</span>
00327 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());
00328 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());
00329 cn-><a class="code" href="classircd__connector.html#a14">CloseConnection</a>();
00330 cn-><a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00331 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());
00332 <span class="comment">// retry the packet along a new route so either arrival OR failure are gauranteed (bugfix)</span>
00333 <span class="keywordflow">return</span> this-><a class="code" href="classserverrec.html#a7">SendPacket</a>(message,sendhost);
00334 }
00335 <span class="keywordflow">if</span> (!cn-><a class="code" href="classircd__connector.html#a22">FlushWriteBuf</a>())
00336 {
00337 <span class="comment">// if we're here the write() caused an error, we cannot proceed</span>
00338 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());
00339 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());
00340 cn-><a class="code" href="classircd__connector.html#a14">CloseConnection</a>();
00341 cn-><a class="code" href="classircd__connector.html#a7">SetState</a>(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00342 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());
00343 <span class="comment">// retry the packet along a new route so either arrival OR failure are gauranteed</span>
00344 <span class="keywordflow">return</span> this-><a class="code" href="classserverrec.html#a7">SendPacket</a>(message,sendhost);
00345 }
00346 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00347 }
00348 }
00349
<a name="l00350"></a><a class="code" href="servers_8cpp.html#a3">00350</a> <span class="keywordtype">bool</span> <a class="code" href="servers_8cpp.html#a3">already_have_sum</a>(std::string sum)
00351 {
00352 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="servers_8cpp.html#a2">xsums</a>.size(); i++)
00353 {
00354 <span class="keywordflow">if</span> (<a class="code" href="servers_8cpp.html#a2">xsums</a>[i] == sum)
00355 {
00356 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00357 }
00358 }
00359 <span class="keywordflow">if</span> (<a class="code" href="servers_8cpp.html#a2">xsums</a>.size() >= 128)
00360 {
00361 <a class="code" href="servers_8cpp.html#a2">xsums</a>.pop_front();
00362 }
00363 <a class="code" href="servers_8cpp.html#a2">xsums</a>.push_back(sum);
00364 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00365 }
00366
00367 <span class="comment">// receives a packet from any where there is data waiting, first come, first served</span>
00368 <span class="comment">// fills the message and host values with the host where the data came from.</span>
00369
<a name="l00370"></a><a class="code" href="classserverrec.html#a8">00370</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)
00371 {
00372 <span class="keywordtype">char</span> data[65536];
00373 memset(data, 0, 65536);
00374 <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++)
00375 {
00376 <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>)
00377 {
00378 <span class="comment">// returns false if the packet could not be sent (e.g. target host down)</span>
00379 <span class="keywordtype">int</span> rcvsize = 0;
00380
00381 <span class="comment">// check if theres any data on this socket</span>
00382 <span class="comment">// if not, continue onwards to the next.</span>
00383 pollfd polls;
00384 polls.fd = this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].GetDescriptor();
00385 polls.events = POLLIN;
00386 <span class="keywordtype">int</span> ret = poll(&polls,1,1);
00387 <span class="keywordflow">if</span> (ret <= 0) <span class="keywordflow">continue</span>;
00388
00389 rcvsize = recv(this->connectors[i].GetDescriptor(),data,65000,0);
00390 data[rcvsize] = <span class="charliteral">'\0'</span>;
00391 <span class="keywordflow">if</span> (rcvsize == -1)
00392 {
00393 <span class="keywordflow">if</span> (errno != EAGAIN)
00394 {
00395 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"recv() failed for serverrec::RecvPacket(): %s"</span>,strerror(errno));
00396 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Disabling connector: %s"</span>,this->connectors[i].GetServerName().c_str());
00397 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].CloseConnection();
00398 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].SetState(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00399 }
00400 }
00401 <span class="keywordtype">int</span> pushed = 0;
00402 <span class="keywordflow">if</span> (rcvsize > 0)
00403 {
00404 <span class="keywordflow">if</span> (!this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].AddBuffer(data))
00405 {
00406 WriteOpers(<span class="stringliteral">"*** Read buffer for %s exceeds maximum, closing connection!"</span>,this->connectors[i].GetServerName().c_str());
00407 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].CloseConnection();
00408 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].SetState(<a class="code" href="connection_8h.html#a0">STATE_DISCONNECTED</a>);
00409 }
00410 <span class="keywordflow">if</span> (this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].BufferIsComplete())
00411 {
00412 this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].ResetPing();
00413 <span class="keywordflow">while</span> (this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].BufferIsComplete())
00414 {
00415 std::string text = this-><a class="code" href="classserverrec.html#o11">connectors</a>[i].GetBuffer();
00416 <span class="keywordflow">if</span> (text != <span class="stringliteral">""</span>)
00417 {
00418 <span class="keywordflow">if</span> ((text[0] == <span class="charliteral">':'</span>) && (text.find(<span class="stringliteral">" "</span>) != std::string::npos))
00419 {
00420 std::string orig = text;
00421 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Original: %s"</span>,text.c_str());
00422 std::string sum = text.substr(1,text.find(<span class="stringliteral">" "</span>)-1);
00423 text = text.substr(text.find(<span class="stringliteral">" "</span>)+1,text.length());
00424 std::string possible_token = text.substr(1,text.find(<span class="stringliteral">" "</span>)-1);
00425 <span class="keywordflow">if</span> (possible_token.length() > 1)
00426 {
00427 sums.push_back(<span class="stringliteral">"*"</span>);
00428 text = orig;
00429 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Non-mesh, non-tokenized string passed up the chain"</span>);
00430 }
00431 <span class="keywordflow">else</span>
00432 {
00433 log(<a class="code" href="modules_8h.html#a0">DEBUG</a>,<span class="stringliteral">"Packet sum: '%s'"</span>,sum.c_str());
00434 <span class="keywordflow">if</span> ((<a class="code" href="servers_8cpp.html#a3">already_have_sum</a>(sum)) && (sum != <span class="stringliteral">"*"</span>))
00435 {
00436 <span class="comment">// we don't accept dupes</span>
00437 <span class="keywordflow">continue</span>;
00438 }
00439 sums.push_back(sum.c_str());
00440 }
00441 }
00442 <span class="keywordflow">else</span> sums.push_back(<span class="stringliteral">"*"</span>);
00443 messages.push_back(text.c_str());
00444 strlcpy(recvhost,this->connectors[i].GetServerName().c_str(),160);
00445 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());
00446 }
00447 }
00448 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00449 }
00450 }
00451 }
00452 }
00453 <span class="comment">// nothing new yet -- message and host will be undefined</span>
00454 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00455 }
00456
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Tue May 24 02:30:06 2005 for InspIRCd by
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