1 #ifndef __TC_EMATCH_H_
2 #define __TC_EMATCH_H_
3
4 #include <ctype.h>
5 #include <stdlib.h>
6 #include <string.h>
7
8 #include "utils.h"
9 #include "tc_util.h"
10
11 #define EMATCHKINDSIZ 16
12
13 struct bstr
14 {
15 char *data;
16 unsigned int len;
17 int quoted;
18 struct bstr *next;
19 };
20
21 extern struct bstr * bstr_alloc(const char *text);
22
bstr_new(char * data,unsigned int len)23 static inline struct bstr * bstr_new(char *data, unsigned int len)
24 {
25 struct bstr *b = calloc(1, sizeof(*b));
26
27 if (b == NULL)
28 return NULL;
29
30 b->data = data;
31 b->len = len;
32
33 return b;
34 }
35
bstrcmp(struct bstr * b,const char * text)36 static inline int bstrcmp(struct bstr *b, const char *text)
37 {
38 int len = strlen(text);
39 int d = b->len - len;
40
41 if (d == 0)
42 return strncmp(b->data, text, len);
43
44 return d;
45 }
46
bstr_next(struct bstr * b)47 static inline struct bstr *bstr_next(struct bstr *b)
48 {
49 return b->next;
50 }
51
52 extern unsigned long bstrtoul(const struct bstr *b);
53 extern void bstr_print(FILE *fd, const struct bstr *b, int ascii);
54
55
56 struct ematch
57 {
58 struct bstr *args;
59 int index;
60 int inverted;
61 int relation;
62 int child_ref;
63 struct ematch *child;
64 struct ematch *next;
65 };
66
new_ematch(struct bstr * args,int inverted)67 static inline struct ematch * new_ematch(struct bstr *args, int inverted)
68 {
69 struct ematch *e = calloc(1, sizeof(*e));
70
71 if (e == NULL)
72 return NULL;
73
74 e->args = args;
75 e->inverted = inverted;
76
77 return e;
78 }
79
80 extern void print_ematch_tree(const struct ematch *tree);
81
82
83 struct ematch_util
84 {
85 char kind[EMATCHKINDSIZ];
86 int kind_num;
87 int (*parse_eopt)(struct nlmsghdr *,struct tcf_ematch_hdr *,
88 struct bstr *);
89 int (*print_eopt)(FILE *, struct tcf_ematch_hdr *, void *, int);
90 void (*print_usage)(FILE *);
91 struct ematch_util *next;
92 };
93
parse_layer(struct bstr * b)94 static inline int parse_layer(struct bstr *b)
95 {
96 if (*((char *) b->data) == 'l')
97 return TCF_LAYER_LINK;
98 else if (*((char *) b->data) == 'n')
99 return TCF_LAYER_NETWORK;
100 else if (*((char *) b->data) == 't')
101 return TCF_LAYER_TRANSPORT;
102 else
103 return INT_MAX;
104 }
105
106 extern int em_parse_error(int err, struct bstr *args, struct bstr *carg,
107 struct ematch_util *, char *fmt, ...);
108 extern int print_ematch(FILE *, const struct rtattr *);
109 extern int parse_ematch(int *, char ***, int, struct nlmsghdr *);
110
111 #endif
112