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Diff for /libaitrpc/src/aitrpc.c between versions 1.1 and 1.14

version 1.1, 2010/06/18 01:48:06 version 1.14, 2013/12/15 23:01:02
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 * $Author$  * $Author$
 * $Id$  * $Id$
 *  *
*************************************************************************/**************************************************************************
 The ELWIX and AITNET software is distributed under the following
 terms:
 
 All of the documentation and software included in the ELWIX and AITNET
 Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
 
 Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
         by Michael Pounov <misho@elwix.org>.  All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:
 1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
 2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.
 3. All advertising materials mentioning features or use of this software
    must display the following acknowledgement:
 This product includes software developed by Michael Pounov <misho@elwix.org>
 ELWIX - Embedded LightWeight unIX and its contributors.
 4. Neither the name of AITNET nor the names of its contributors
    may be used to endorse or promote products derived from this software
    without specific prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 SUCH DAMAGE.
 */
 #include "global.h"  #include "global.h"
   
   
 #pragma GCC visibility push(hidden)  #pragma GCC visibility push(hidden)
   
 // ------------------------------------------------  
   
 int rpc_Errno;  int rpc_Errno;
 char rpc_Error[STRSIZ];  char rpc_Error[STRSIZ];
   
   inline int
   rpc_funcs_cmp(struct tagRPCFunc *a, struct tagRPCFunc *b)
   {
           int ret;
   
           assert(a && b);
   
           ret = AIT_KEY(&a->func_name) - AIT_KEY(&b->func_name);
   
           if (ret < 0)
                   return -1;
           else if (ret > 0)
                   return 1;
   
           return ret;
   }
   
   AVL_GENERATE(tagRPCFuncs, tagRPCFunc, func_node, rpc_funcs_cmp);
   
 #pragma GCC visibility pop  #pragma GCC visibility pop
   
 // rpc_GetErrno() Get error code of last operation  // rpc_GetErrno() Get error code of last operation
inline intint
 rpc_GetErrno()  rpc_GetErrno()
 {  {
         return rpc_Errno;          return rpc_Errno;
 }  }
   
 // rpc_GetError() Get error text of last operation  // rpc_GetError() Get error text of last operation
inline const char *const char *
 rpc_GetError()  rpc_GetError()
 {  {
         return rpc_Error;          return rpc_Error;
 }  }
   
 // rpc_SetErr() Set error to variables for internal use!!!  // rpc_SetErr() Set error to variables for internal use!!!
inline voidvoid
 rpc_SetErr(int eno, char *estr, ...)  rpc_SetErr(int eno, char *estr, ...)
 {  {
         va_list lst;          va_list lst;
   
         rpc_Errno = eno;          rpc_Errno = eno;
        memset(rpc_Error, 0, STRSIZ);        memset(rpc_Error, 0, sizeof rpc_Error);
         va_start(lst, estr);          va_start(lst, estr);
        vsnprintf(rpc_Error, STRSIZ, estr, lst);        vsnprintf(rpc_Error, sizeof rpc_Error, estr, lst);
         va_end(lst);          va_end(lst);
 }  }
   
 // ------------------------------------------------------------  
   
   /*
    * rpc_chkPktSession() - Check RPC session
    *
    * @p = packet session
    * @s = active session
    * return: -1, 1, 2, 3 are errors or 0 ok
    */
   int
   rpc_chkPktSession(rpc_sess_t *p, rpc_sess_t *s)
   {
           if (!p || !s)
                   return -1;
   
           if (p->sess_version != s->sess_version)
                   return 1;
           if (p->sess_instance != s->sess_instance)
                   return 2;
   
           return 0;
   }
   
   /*
    * rpc_addPktSession() - Prepare session into network format
    *
    * @p = packet session
    * @s = host session
    * return: -1 error or 0 ok
    */
   int
   rpc_addPktSession(rpc_sess_t *p, rpc_sess_t *s)
   {
           if (!p || !s)
                   return -1;
   
           p->sess_version = s->sess_version;
           p->sess_instance = s->sess_instance;
   
           return 0;
   }
   
   /*
    * rpc_Read() - RPC read operation
    *
    * @sock = socket
    * @type = type of socket
    * @flags = receive flags
    * @sa = check client address, if you use udp protocol
    * @buf = buffer
    * @blen = buffer length
    * return: -1 error, 0 EOF or or >0 readed bytes into buffer
    */
   ssize_t
   rpc_Read(int sock, int type, int flags, sockaddr_t * __restrict sa, 
                   u_char * __restrict buf, size_t blen)
   {
           struct pollfd pfd;
           sockaddr_t sa2;
           socklen_t salen;
           int ret = 0, len;
   
           pfd.fd = sock;
           pfd.events = POLLIN | POLLPRI;
           memset(buf, 0, blen);
           memset(&sa2, 0, sizeof sa2);
           salen = sa2.ss.ss_len = sizeof(sockaddr_t);
   
           for (len = blen; len > 0; len -= ret, buf += ret) {
                   if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 || 
                                   pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
                           if (ret)
                                   LOGERR;
                           else
                                   rpc_SetErr(ETIMEDOUT, "Timeout reached! Server not respond");
                           return -1;
                   }
                   if (type == SOCK_STREAM)
                           ret = recv(sock, buf, len, flags);
                   else {
                           ret = recvfrom(sock, buf, len, flags, &sa2.sa, &salen);
                           if (ret > -1 && sa && e_addrcmp(sa, &sa2, 42)) {
                                   rpc_SetErr(ERPCMISMATCH, 
                                                   "Received RPC response from unknown address");
                                   return -1;
                           }
                   }
                   if (ret == -1) {
                           LOGERR;
                           return -1;
                   }
                   if (!ret)       /* EOF */
                           return 0;
           }
           ret = blen - len;
   
           return ret;
   }
   
   /*
    * rpc_Write() - RPC write operation
    *
    * @sock = socket
    * @type = type of socket
    * @flags = send flags
    * @sa = send to client address, if you use udp protocol
    * @buf = buffer
    * @blen = buffer length
    * return: -1 error, 0 EOF or >0 written bytes into buffer
    */
   ssize_t
   rpc_Write(int sock, int type, int flags, sockaddr_t * __restrict sa, 
                   u_char * __restrict buf, size_t blen)
   {
           struct pollfd pfd;
           int ret = 0, len = 0;
   
           pfd.fd = sock;
           pfd.events = POLLOUT;
           for (len = blen; len > 0; len -= ret, buf += ret) {
                   if ((ret = poll(&pfd, 1, DEF_RPC_TIMEOUT * 1000)) < 1 || 
                                   pfd.revents & (POLLERR | POLLHUP | POLLNVAL)) {
   #if 0
                           if (!ret)
                                   continue;
   #endif
                           if (ret > 0)
                                   rpc_SetErr(EPIPE, "Disconnected RPC session\n");
                           else
                                   LOGERR;
                           return -1;
                   }
                   if (type == SOCK_STREAM)
                           ret = send(sock, buf, len, flags);
                   else if (sa)
                           ret = sendto(sock, buf, len, flags, &sa->sa, sa->sa.sa_len);
                   else {
                           rpc_SetErr(EINVAL, "Invalid argument(s)!");
                           return -1;
                   }
                   if (ret == -1) {
                           LOGERR;
                           return -1;
                   }
                   if (!ret)       /* EOF */
                           return 0;
           }
           ret = blen - len;
           if (ret != blen) {
                   rpc_SetErr(EPROCUNAVAIL, "RPC request, should be send %d bytes, "
                                   "really sended %d bytes", len, ret);
                   return -1;
           }
   
           return ret;
   }
Removed from v.1.1  
changed lines
  Added in v.1.14

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