ceph/src/dpdk/examples/ipsec-secgw/parser.h

   1 /*   BSD LICENSE
   2  *
   3  *   Copyright(c) 2016 Intel Corporation. All rights reserved.
   4  *   All rights reserved.
   5  *
   6  *   Redistribution and use in source and binary forms, with or without
   7  *   modification, are permitted provided that the following conditions
   8  *   are met:
   9  *
  10  *     * Redistributions of source code must retain the above copyright
  11  *       notice, this list of conditions and the following disclaimer.
  12  *     * Redistributions in binary form must reproduce the above copyright
  13  *       notice, this list of conditions and the following disclaimer in
  14  *       the documentation and/or other materials provided with the
  15  *       distribution.
  16  *     * Neither the name of Intel Corporation nor the names of its
  17  *       contributors may be used to endorse or promote products derived
  18  *       from this software without specific prior written permission.
  19  *
  20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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  26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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  29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/types.h>
  34 #include <netinet/in.h>
  35 #include <netinet/ip.h>
  36
  37 #ifndef __PARSER_H
  38 #define __PARSER_H
  39
  40 struct parse_status {
  41         int status;
  42         char parse_msg[256];
  43 };
  44
  45 #define APP_CHECK(exp, status, fmt, ...)                                \
  46 do {                                                                    \
  47         if (!(exp)) {                                                   \
  48                 sprintf(status->parse_msg, fmt "\n",                    \
  49                         ## __VA_ARGS__);                                \
  50                 status->status = -1;                                    \
  51         } else                                                          \
  52                 status->status = 0;                                     \
  53 } while (0)
  54
  55 #define APP_CHECK_PRESENCE(val, str, status)                            \
  56         APP_CHECK(val == 0, status,                                     \
  57                 "item \"%s\" already present", str)
  58
  59 #define APP_CHECK_TOKEN_EQUAL(tokens, index, ref, status)               \
  60         APP_CHECK(strcmp(tokens[index], ref) == 0, status,              \
  61                 "unrecognized input \"%s\": expect \"%s\"\n",           \
  62                 tokens[index], ref)
  63
  64 static inline int
  65 is_str_num(const char *str)
  66 {
  67         uint32_t i;
  68
  69         for (i = 0; i < strlen(str); i++)
  70                 if (!isdigit(str[i]))
  71                         return -1;
  72
  73         return 0;
  74 }
  75
  76 #define APP_CHECK_TOKEN_IS_NUM(tokens, index, status)                   \
  77         APP_CHECK(is_str_num(tokens[index]) == 0, status,               \
  78         "input \"%s\" is not valid number string", tokens[index])
  79
  80
  81 #define INCREMENT_TOKEN_INDEX(index, max_num, status)                   \
  82 do {                                                                    \
  83         APP_CHECK(index + 1 < max_num, status, "reaching the end of "   \
  84                 "the token array");                                     \
  85         index++;                                                        \
  86 } while (0)
  87
  88 int
  89 parse_ipv4_addr(const char *token, struct in_addr *ipv4, uint32_t *mask);
  90
  91 int
  92 parse_ipv6_addr(const char *token, struct in6_addr *ipv6, uint32_t *mask);
  93
  94 int
  95 parse_range(const char *token, uint16_t *low, uint16_t *high);
  96
  97 void
  98 parse_sp4_tokens(char **tokens, uint32_t n_tokens,
  99         struct parse_status *status);
 100
 101 void
 102 parse_sp6_tokens(char **tokens, uint32_t n_tokens,
 103         struct parse_status *status);
 104
 105 void
 106 parse_sa_tokens(char **tokens, uint32_t n_tokens,
 107         struct parse_status *status);
 108
 109 void
 110 parse_rt_tokens(char **tokens, uint32_t n_tokens,
 111         struct parse_status *status);
 112
 113 int
 114 parse_cfg_file(const char *cfg_filename);
 115
 116 #endif