examples/ipsec-secgw/parser.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016 Intel Corporation
   3  */
   4
   5 #ifndef __PARSER_H
   6 #define __PARSER_H
   7
   8 #include <sys/types.h>
   9 #include <netinet/in.h>
  10 #include <netinet/ip.h>
  11 #include <string.h>
  12
  13 struct parse_status {
  14         int status;
  15         char parse_msg[256];
  16 };
  17
  18 #define APP_CHECK(exp, st, fmt, ...)                                    \
  19 do {                                                                    \
  20         if (!(exp)) {                                                   \
  21                 sprintf((st)->parse_msg, fmt "\n",                      \
  22                         ## __VA_ARGS__);                                \
  23                 (st)->status = -1;                                      \
  24         } else                                                          \
  25                 (st)->status = 0;                                       \
  26 } while (0)
  27
  28 #define APP_CHECK_PRESENCE(val, str, status)                            \
  29         APP_CHECK(val == 0, status,                                     \
  30                 "item \"%s\" already present", str)
  31
  32 #define APP_CHECK_TOKEN_EQUAL(tokens, index, ref, status)               \
  33         APP_CHECK(strcmp(tokens[index], ref) == 0, status,              \
  34                 "unrecognized input \"%s\": expect \"%s\"\n",           \
  35                 tokens[index], ref)
  36
  37 static inline int
  38 is_str_num(const char *str)
  39 {
  40         uint32_t i;
  41
  42         for (i = 0; i < strlen(str); i++)
  43                 if (!isdigit(str[i]))
  44                         return -1;
  45
  46         return 0;
  47 }
  48
  49 #define APP_CHECK_TOKEN_IS_NUM(tokens, index, status)                   \
  50         APP_CHECK(is_str_num(tokens[index]) == 0, status,               \
  51         "input \"%s\" is not valid number string", tokens[index])
  52
  53
  54 #define INCREMENT_TOKEN_INDEX(index, max_num, status)                   \
  55 do {                                                                    \
  56         APP_CHECK(index + 1 < max_num, status, "reaching the end of "   \
  57                 "the token array");                                     \
  58         index++;                                                        \
  59 } while (0)
  60
  61 int
  62 parse_ipv4_addr(const char *token, struct in_addr *ipv4, uint32_t *mask);
  63
  64 int
  65 parse_ipv6_addr(const char *token, struct in6_addr *ipv6, uint32_t *mask);
  66
  67 int
  68 parse_range(const char *token, uint16_t *low, uint16_t *high);
  69
  70 void
  71 sp4_sort_arr(void);
  72
  73 void
  74 parse_sp4_tokens(char **tokens, uint32_t n_tokens,
  75         struct parse_status *status);
  76
  77 void
  78 sp6_sort_arr(void);
  79
  80 void
  81 parse_sp6_tokens(char **tokens, uint32_t n_tokens,
  82         struct parse_status *status);
  83
  84 void
  85 sa_sort_arr(void);
  86
  87 void
  88 parse_sa_tokens(char **tokens, uint32_t n_tokens,
  89         struct parse_status *status);
  90
  91 void
  92 parse_rt_tokens(char **tokens, uint32_t n_tokens,
  93         struct parse_status *status);
  94
  95 int
  96 parse_cfg_file(const char *cfg_filename);
  97
  98 #endif