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Annotation of libaitrpc/src/aitrpc.c, revision 1.8

1.1       misho       1: /*************************************************************************
                      2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
                      3: *  by Michael Pounov <misho@openbsd-bg.org>
                      4: *
                      5: * $Author: misho $
1.8     ! misho       6: * $Id: aitrpc.c,v 1.7.6.1 2013/01/17 16:33:57 misho Exp $
1.1       misho       7: *
1.2       misho       8: **************************************************************************
                      9: The ELWIX and AITNET software is distributed under the following
                     10: terms:
                     11: 
                     12: All of the documentation and software included in the ELWIX and AITNET
                     13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
                     14: 
1.8     ! misho      15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
1.2       misho      16:        by Michael Pounov <misho@elwix.org>.  All rights reserved.
                     17: 
                     18: Redistribution and use in source and binary forms, with or without
                     19: modification, are permitted provided that the following conditions
                     20: are met:
                     21: 1. Redistributions of source code must retain the above copyright
                     22:    notice, this list of conditions and the following disclaimer.
                     23: 2. Redistributions in binary form must reproduce the above copyright
                     24:    notice, this list of conditions and the following disclaimer in the
                     25:    documentation and/or other materials provided with the distribution.
                     26: 3. All advertising materials mentioning features or use of this software
                     27:    must display the following acknowledgement:
                     28: This product includes software developed by Michael Pounov <misho@elwix.org>
                     29: ELWIX - Embedded LightWeight unIX and its contributors.
                     30: 4. Neither the name of AITNET nor the names of its contributors
                     31:    may be used to endorse or promote products derived from this software
                     32:    without specific prior written permission.
                     33: 
                     34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
                     35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     37: ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     44: SUCH DAMAGE.
                     45: */
1.1       misho      46: #include "global.h"
                     47: 
                     48: 
                     49: #pragma GCC visibility push(hidden)
                     50: 
                     51: int rpc_Errno;
                     52: char rpc_Error[STRSIZ];
                     53: 
1.7       misho      54: inline int
                     55: rpc_funcs_cmp(struct tagRPCFunc *a, struct tagRPCFunc *b)
                     56: {
                     57:        int ret;
                     58: 
                     59:        assert(a && b);
                     60: 
                     61:        ret = AIT_KEY(&a->func_name) - AIT_KEY(&b->func_name);
                     62: 
                     63:        if (ret < 0)
                     64:                return -1;
                     65:        else if (ret > 0)
                     66:                return 1;
                     67: 
                     68:        return ret;
                     69: }
                     70: 
                     71: AVL_GENERATE(tagRPCFuncs, tagRPCFunc, func_node, rpc_funcs_cmp);
                     72: 
1.1       misho      73: #pragma GCC visibility pop
                     74: 
                     75: // rpc_GetErrno() Get error code of last operation
                     76: inline int
                     77: rpc_GetErrno()
                     78: {
                     79:        return rpc_Errno;
                     80: }
                     81: 
                     82: // rpc_GetError() Get error text of last operation
                     83: inline const char *
                     84: rpc_GetError()
                     85: {
                     86:        return rpc_Error;
                     87: }
                     88: 
                     89: // rpc_SetErr() Set error to variables for internal use!!!
                     90: inline void
                     91: rpc_SetErr(int eno, char *estr, ...)
                     92: {
                     93:        va_list lst;
                     94: 
                     95:        rpc_Errno = eno;
1.8     ! misho      96:        memset(rpc_Error, 0, sizeof rpc_Error);
1.1       misho      97:        va_start(lst, estr);
1.8     ! misho      98:        vsnprintf(rpc_Error, sizeof rpc_Error, estr, lst);
1.1       misho      99:        va_end(lst);
                    100: }
                    101: 
                    102: 
1.4       misho     103: /*
1.6       misho     104:  * rpc_chkPktSession() - Check RPC session
1.5       misho     105:  *
1.4       misho     106:  * @p = packet session
                    107:  * @s = active session
1.6       misho     108:  * return: -1, 1, 2, 3 are errors or 0 ok
1.4       misho     109:  */
                    110: inline int
                    111: rpc_chkPktSession(rpc_sess_t *p, rpc_sess_t *s)
                    112: {
                    113:        if (!p || !s)
                    114:                return -1;
                    115: 
                    116:        if (p->sess_version != s->sess_version)
                    117:                return 1;
                    118:        if (ntohl(p->sess_program) != s->sess_program)
                    119:                return 2;
1.6       misho     120:        if (p->sess_process != s->sess_process)
1.4       misho     121:                return 3;
                    122: 
                    123:        return 0;
                    124: }
                    125: 
                    126: /*
1.6       misho     127:  * rpc_addPktSession() - Prepare session into network format
1.5       misho     128:  *
1.4       misho     129:  * @p = packet session
1.6       misho     130:  * @s = host session
1.4       misho     131:  * return: -1 error or 0 ok
                    132:  */
                    133: inline int
                    134: rpc_addPktSession(rpc_sess_t *p, rpc_sess_t *s)
                    135: {
                    136:        if (!p || !s)
                    137:                return -1;
                    138: 
                    139:        p->sess_version = s->sess_version;
                    140:        p->sess_program = htonl(s->sess_program);
1.6       misho     141:        p->sess_process = s->sess_process;
1.4       misho     142: 
                    143:        return 0;
                    144: }