release/src/router/udpxy/rparse.h

   1 /* @(#) header for parsing functions for udpxy
   2  *
   3  * Copyright 2008-2011 Pavel V. Cherenkov (pcherenkov@gmail.com)
   4  *
   5  *  This file is part of udpxy.
   6  *
   7  *  udpxy is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation, either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  udpxy is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with udpxy.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #ifndef RPARSE_H_121420071651_
  22 #define RPARSE_H_121420071651_
  23
  24 #include <sys/types.h>
  25 #include <sys/socket.h>
  26
  27 #ifdef __cplusplus
  28 extern "C" {
  29 #endif
  30
  31 /* parse and copy parameters of HTTP GET request into
  32  * request buffer
  33  *
  34  * @param src       buffer with raw source data
  35  * @param srclen    length of raw data
  36  * @param request   destination buffer for the request
  37  * @param rqlen     length of request buffer on entry
  38  *                  length of request on exit
  39  *
  40  * @return 0 if success: request buffer gets populated,
  41  *         non-zero if error
  42  */
  43 int
  44 get_request( const char* src, size_t srclen,
  45              char* request, size_t* rqlen );
  46
  47
  48 /* parse (GET) request into command and parameters (options)
  49  * c-strings
  50  *
  51  * @param s         source c-string
  52  * @param cmd       buffer for the parsed command c-string
  53  * @param clen      length of command buffer
  54  * @param opt       buffer for the parsed options c-string
  55  * @param optlen    length of options buffer
  56  *
  57  * @return 0 if success: cmd and opt get get populated
  58  *         non-zero if an error ocurred
  59  */
  60 int
  61 parse_param( const char* s, size_t slen,
  62              char* cmd,     size_t clen,
  63              char* opt,     size_t optlen );
  64
  65
  66 /* parse options of upd-relay command into IP address
  67  * and port
  68  *
  69  * @param opt       options string
  70  * @param optlen    options string size (including zero-terminating byte)
  71  * @param addr      destination for address string
  72  * @param addrlen   length of address string buffer
  73  * @param port      port to populate
  74  *
  75  * @return 0 if success: inaddr and port get populated
  76  *         non-zero if error
  77  */
  78 int
  79 parse_udprelay( const char* opt, size_t optlen,
  80                 char* addr, size_t addrlen,
  81                 uint16_t*       port );
  82
  83
  84 #ifdef __cplusplus
  85 } /* extern "C" */
  86 #endif
  87
  88 #endif
  89
  90 /* __EOF__ */
  91