src/snmp/Session.cc

   1 /*
   2  * $Id$
   3  *
   4  * DEBUG: section 49    SNMP Interface
   5  *
   6  */
   7
   8 #include "squid.h"
   9 #include "base/TextException.h"
  10 #include "ipc/TypedMsgHdr.h"
  11 #include "protos.h"
  12 #include "snmp/Session.h"
  13
  14
  15 Snmp::Session::Session()
  16 {
  17     clear();
  18 }
  19
  20 Snmp::Session::Session(const Session& session)
  21 {
  22     assign(session);
  23 }
  24
  25 Snmp::Session::~Session()
  26 {
  27     free();
  28 }
  29
  30 Snmp::Session&
  31 Snmp::Session::operator = (const Session& session)
  32 {
  33     free();
  34     assign(session);
  35     return *this;
  36 }
  37
  38 void
  39 Snmp::Session::clear()
  40 {
  41     xmemset(this, 0, sizeof(*this));
  42 }
  43
  44 void
  45 Snmp::Session::free()
  46 {
  47     if (community_len > 0) {
  48         Must(community != NULL);
  49         xfree(community);
  50     }
  51     if (peername != NULL)
  52         xfree(peername);
  53     clear();
  54 }
  55
  56 void
  57 Snmp::Session::assign(const Session& session)
  58 {
  59     memcpy(this, &session, sizeof(*this));
  60     if (session.community != NULL) {
  61         community = (u_char*)xstrdup((char*)session.community);
  62         Must(community != NULL);
  63     }
  64     if (session.peername != NULL) {
  65         peername = xstrdup(session.peername);
  66         Must(peername != NULL);
  67     }
  68 }
  69
  70 void
  71 Snmp::Session::pack(Ipc::TypedMsgHdr& msg) const
  72 {
  73     msg.putPod(Version);
  74     msg.putInt(community_len);
  75     if (community_len > 0) {
  76         Must(community != NULL);
  77         msg.putFixed(community, community_len);
  78     }
  79     msg.putPod(retries);
  80     msg.putPod(timeout);
  81     int len = peername != NULL ? strlen(peername) : 0;
  82     msg.putInt(len);
  83     if (len > 0)
  84         msg.putFixed(peername, len);
  85     msg.putPod(remote_port);
  86     msg.putPod(local_port);
  87 }
  88
  89 void
  90 Snmp::Session::unpack(const Ipc::TypedMsgHdr& msg)
  91 {
  92     free();
  93     msg.getPod(Version);
  94     community_len = msg.getInt();
  95     if (community_len > 0) {
  96         community = static_cast<u_char*>(xmalloc(community_len + 1));
  97         Must(community != NULL);
  98         msg.getFixed(community, community_len);
  99         community[community_len] = 0;
 100     }
 101     msg.getPod(retries);
 102     msg.getPod(timeout);
 103     int len = msg.getInt();
 104     if (len > 0) {
 105         peername = static_cast<char*>(xmalloc(len + 1));
 106         Must(peername != NULL);
 107         msg.getFixed(peername, len);
 108         peername[len] = 0;
 109     }
 110     msg.getPod(remote_port);
 111     msg.getPod(local_port);
 112 }