1 8d1b399b 2021-07-22 op /*
 2 8d1b399b 2021-07-22 op  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
 3 8d1b399b 2021-07-22 op  *
 4 8d1b399b 2021-07-22 op  * Permission to use, copy, modify, and distribute this software for any
 5 8d1b399b 2021-07-22 op  * purpose with or without fee is hereby granted, provided that the above
 6 8d1b399b 2021-07-22 op  * copyright notice and this permission notice appear in all copies.
 7 8d1b399b 2021-07-22 op  *
 8 8d1b399b 2021-07-22 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 8d1b399b 2021-07-22 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 8d1b399b 2021-07-22 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 8d1b399b 2021-07-22 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 8d1b399b 2021-07-22 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 8d1b399b 2021-07-22 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 8d1b399b 2021-07-22 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 8d1b399b 2021-07-22 op  */
16 8d1b399b 2021-07-22 op 
17 8d1b399b 2021-07-22 op #include "compat.h"
18 8d1b399b 2021-07-22 op 
19 8d1b399b 2021-07-22 op #include <stdlib.h>
20 8d1b399b 2021-07-22 op #include <string.h>
21 8d1b399b 2021-07-22 op 
22 8d1b399b 2021-07-22 op #include "log.h"
23 8d1b399b 2021-07-22 op #include "table.h"
24 8d1b399b 2021-07-22 op #include "utils.h"
25 8d1b399b 2021-07-22 op 
26 8d1b399b 2021-07-22 op int
27 8d1b399b 2021-07-22 op table_open(struct kd_conf *conf, const char *name, const char *type,
28 8d1b399b 2021-07-22 op     const char *path)
29 8d1b399b 2021-07-22 op {
30 8d1b399b 2021-07-22 op 	struct table *t;
31 8d1b399b 2021-07-22 op 	struct kd_tables_conf *entry;
32 9efa7b7a 2021-07-22 op 	struct table_backend *backends[] = {
33 9efa7b7a 2021-07-22 op 		&table_static,
34 9efa7b7a 2021-07-22 op 		NULL,
35 8d1b399b 2021-07-22 op 	}, *b;
36 8d1b399b 2021-07-22 op 	size_t i;
37 8d1b399b 2021-07-22 op 
38 9efa7b7a 2021-07-22 op 	for (i = 0; backends[i] != NULL; ++i) {
39 9efa7b7a 2021-07-22 op 		b = backends[i];
40 8d1b399b 2021-07-22 op 		if (!strcmp(type, b->name))
41 8d1b399b 2021-07-22 op 			goto found;
42 8d1b399b 2021-07-22 op 	}
43 8d1b399b 2021-07-22 op 	log_warn("unknown table type %s", type);
44 8d1b399b 2021-07-22 op 	return -1;
45 8d1b399b 2021-07-22 op 
46 8d1b399b 2021-07-22 op found:
47 8d1b399b 2021-07-22 op 	if (b->open == NULL) {
48 8d1b399b 2021-07-22 op 		log_warn("can't open table %s (type %s)",
49 8d1b399b 2021-07-22 op 		    name, b->name);
50 8d1b399b 2021-07-22 op 		return -1;
51 8d1b399b 2021-07-22 op 	}
52 8d1b399b 2021-07-22 op 
53 8d1b399b 2021-07-22 op 	t = xcalloc(1, sizeof(*t));
54 8d1b399b 2021-07-22 op 	strlcpy(t->t_name, name, sizeof(t->t_name));
55 8d1b399b 2021-07-22 op 	if (path != NULL)
56 8d1b399b 2021-07-22 op 		strlcpy(t->t_path, path, sizeof(t->t_path));
57 8d1b399b 2021-07-22 op 	t->t_backend = b;
58 8d1b399b 2021-07-22 op 
59 8d1b399b 2021-07-22 op 	if (t->t_backend->open(t) == -1)
60 8d1b399b 2021-07-22 op 		fatal("can't open table %s (type %s)",
61 8d1b399b 2021-07-22 op 		    name, path);
62 8d1b399b 2021-07-22 op 
63 8d1b399b 2021-07-22 op 	entry = xcalloc(1, sizeof(*entry));
64 8d1b399b 2021-07-22 op 	entry->table = t;
65 c25feded 2021-07-26 op 	STAILQ_INSERT_HEAD(&conf->table_head, entry, entry);
66 8d1b399b 2021-07-22 op 	return 0;
67 8d1b399b 2021-07-22 op }
68 8d1b399b 2021-07-22 op 
69 8d1b399b 2021-07-22 op int
70 8d1b399b 2021-07-22 op table_add(struct table *t, const char *key, const char *val)
71 8d1b399b 2021-07-22 op {
72 8d1b399b 2021-07-22 op 	if (t->t_backend->add == NULL) {
73 8d1b399b 2021-07-22 op 		log_warn("can't add to table %s (type %s)",
74 8d1b399b 2021-07-22 op 		    t->t_name, t->t_backend->name);
75 8d1b399b 2021-07-22 op 		return -1;
76 8d1b399b 2021-07-22 op 	}
77 8d1b399b 2021-07-22 op 
78 8d1b399b 2021-07-22 op 	return t->t_backend->add(t, key, val);
79 8d1b399b 2021-07-22 op }
80 8d1b399b 2021-07-22 op 
81 8d1b399b 2021-07-22 op int
82 8d1b399b 2021-07-22 op table_lookup(struct table *t, const char *key, char **ret_val)
83 8d1b399b 2021-07-22 op {
84 8d1b399b 2021-07-22 op 	if (t->t_backend->lookup == NULL) {
85 8d1b399b 2021-07-22 op 		log_warn("can't lookup table %s (type %s)",
86 8d1b399b 2021-07-22 op 		    t->t_name, t->t_backend->name);
87 8d1b399b 2021-07-22 op 		return -1;
88 8d1b399b 2021-07-22 op 	}
89 8d1b399b 2021-07-22 op 
90 8d1b399b 2021-07-22 op 	return t->t_backend->lookup(t, key, ret_val);
91 8d1b399b 2021-07-22 op }
92 8d1b399b 2021-07-22 op 
93 8d1b399b 2021-07-22 op void
94 8d1b399b 2021-07-22 op table_close(struct table *t)
95 8d1b399b 2021-07-22 op {
96 8d1b399b 2021-07-22 op 	if (t->t_backend->close != NULL)
97 8d1b399b 2021-07-22 op 		t->t_backend->close(t);
98 8d1b399b 2021-07-22 op }