deamon/drd64_server_recvsocket.c

   1 /*DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64
   2
   3                          D r . D e a m o n  6 4
   4                         for INTEL64(R), AMD64(R)
   5
   6    Copyright(C) 2007-2009 Koine Yuusuke(koinec). All rights reserved.
   7
   8 Redistribution and use in source and binary forms, with or without
   9 modification, are permitted provided that the following conditions are met:
  10
  11  1. Redistributions of source code must retain the above copyright notice,
  12     this list of conditions and the following disclaimer.
  13  2. Redistributions in binary form must reproduce the above copyright
  14     notice, this list of conditions and the following disclaimer in the
  15     documentation and/or other materials provided with the distribution.
  16
  17 THIS SOFTWARE IS PROVIDED BY Koine Yuusuke(koinec) ``AS IS'' AND ANY
  18 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  20 DISCLAIMED. IN NO EVENT SHALL Koine Yuusuke(koinec) OR CONTRIBUTORS BE
  21 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  26 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  27 OF THE POSSIBILITY OF SUCH DAMAGE.
  28
  29 DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64*/
  30
  31 /* File Info -----------------------------------------------------------
  32 File: drd64_.c
  33 Function:
  34 Comment:
  35 ----------------------------------------------------------------------*/
  36
  37 #include"drd64_server.h"
  38 #include"drd64_server_recvstatus.h"
  39
  40
  41 typedef struct  {
  42         struct  cmsghdr         t_hdr;
  43         struct  cmsgcred        t_cred;
  44 } Drd64_Server_RecvCMsg;
  45
  46 Drd64_Server_RecvCMsg   gt_recvmsg_cmsg;
  47 struct  msghdr  gt_recvmsg_msghdr;
  48 struct  iovec   gt_recvmsg_iovec;
  49
  50
  51 void
  52         Drd64_Server_RecvSocket_InitReadBuffer(
  53                 void )
  54 {
  55         int             i_len_cmsg;
  56
  57         i_len_cmsg      = sizeof( struct cmsghdr ) + sizeof( struct cmsgcred );
  58
  59         memset( &gt_recvmsg_msghdr, 0x00, sizeof( struct msghdr ));
  60         memset( &gt_recvmsg_cmsg, 0x00, i_len_cmsg );
  61
  62         gt_recvmsg_msghdr.msg_name                      = NULL;
  63         gt_recvmsg_msghdr.msg_namelen           = 0;
  64         gt_recvmsg_msghdr.msg_iov                       = &gt_recvmsg_iovec;
  65         gt_recvmsg_msghdr.msg_iovlen            = 1;
  66         gt_recvmsg_msghdr.msg_control           = (caddr_t)&gt_recvmsg_cmsg;
  67         gt_recvmsg_msghdr.msg_controllen        = i_len_cmsg;
  68
  69         return;
  70 }
  71
  72
  73 int
  74         Drd64_Server_RecvSocket_SocketRead_Cert(
  75                 int     i_fds,
  76                 int     *pi_pid )
  77 {
  78         int             i_reads;
  79         struct  cmsgcred        *p_cmsgcred;
  80         Drd64_Server_RecvStatus *p_recv;
  81
  82         p_recv  = Drd64_Server_RecvStatus_GetRecvStatus( i_fds );
  83
  84         if( NULL == p_recv )    { return -1; }
  85
  86         memset( &gt_recvmsg_cmsg, 0x00, sizeof( Drd64_Server_RecvCMsg ));
  87         gt_recvmsg_msghdr.msg_controllen        = sizeof( Drd64_Server_RecvCMsg );
  88
  89         gt_recvmsg_iovec.iov_base       = p_recv->pv_resume;
  90         gt_recvmsg_iovec.iov_len        = p_recv->i_remain_bytes;
  91
  92         i_reads = recvmsg( i_fds, &gt_recvmsg_msghdr, 0x00 );
  93
  94         if( -1 == i_reads )             { return -2; }
  95         else if( 0 == i_reads ) { return -3; }
  96
  97         p_cmsgcred      = (struct cmsgcred *)CMSG_DATA( &gt_recvmsg_cmsg );
  98
  99         *pi_pid = p_cmsgcred->cmcred_pid;
 100
 101         p_recv->i_remain_bytes  -= i_reads;
 102         p_recv->pv_resume               += i_reads;
 103
 104         return p_recv->i_remain_bytes;
 105 }
 106
 107
 108 int
 109         Drd64_Server_RecvSocket_SocketRead(
 110                 int     i_fds )
 111 {
 112         int             i_reads;
 113         Drd64_Server_RecvStatus *p_recv;
 114
 115         p_recv  = Drd64_Server_RecvStatus_GetRecvStatus( i_fds );
 116
 117         if( NULL == p_recv )    { return -1; }
 118
 119         i_reads = recv( p_recv->i_fds_id, p_recv->pv_resume,
 120                                                         p_recv->i_remain_bytes, 0x00 );
 121         if( -1 == i_reads )             { return -2; }
 122         else if( 0 == i_reads ) { return -3; }
 123
 124         p_recv->i_remain_bytes  -= i_reads;
 125         p_recv->pv_resume               += i_reads;
 126
 127         return p_recv->i_remain_bytes;
 128 }
 129
 130
 131 /* EOF of drd64_.c ----------------------------------- */