1 /*
2 ** Zabbix
3 ** Copyright (C) 2001-2021 Zabbix SIA
4 **
5 ** This program is free software; you can redistribute it and/or modify
6 ** it under the terms of the GNU General Public License as published by
7 ** the Free Software Foundation; either version 2 of the License, or
8 ** (at your option) any later version.
9 **
10 ** This program is distributed in the hope that it will be useful,
11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 ** GNU General Public License for more details.
14 **
15 ** You should have received a copy of the GNU General Public License
16 ** along with this program; if not, write to the Free Software
17 ** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 **/
19
20 #include "common.h"
21 #include "alias.h"
22 #include "sysinfo.h"
23 #include "log.h"
24
25 static ALIAS *aliasList = NULL;
26
test_aliases(void)27 void test_aliases(void)
28 {
29 ALIAS *alias;
30
31 for (alias = aliasList; NULL != alias; alias = alias->next)
32 test_parameter(alias->name);
33 }
34
add_alias(const char * name,const char * value)35 void add_alias(const char *name, const char *value)
36 {
37 ALIAS *alias = NULL;
38
39 for (alias = aliasList; ; alias = alias->next)
40 {
41 /* add new Alias */
42 if (NULL == alias)
43 {
44 alias = (ALIAS *)zbx_malloc(alias, sizeof(ALIAS));
45
46 alias->name = strdup(name);
47 alias->value = strdup(value);
48 alias->next = aliasList;
49 aliasList = alias;
50
51 zabbix_log(LOG_LEVEL_DEBUG, "Alias added: \"%s\" -> \"%s\"", name, value);
52 break;
53 }
54
55 /* treat duplicate Alias as error */
56 if (0 == strcmp(alias->name, name))
57 {
58 zabbix_log(LOG_LEVEL_CRIT, "failed to add Alias \"%s\": duplicate name", name);
59 exit(EXIT_FAILURE);
60 }
61 }
62 }
63
alias_list_free(void)64 void alias_list_free(void)
65 {
66 ALIAS *curr, *next;
67
68 next = aliasList;
69
70 while (NULL != next)
71 {
72 curr = next;
73 next = curr->next;
74 zbx_free(curr->value);
75 zbx_free(curr->name);
76 zbx_free(curr);
77 }
78
79 aliasList = NULL;
80 }
81
zbx_alias_get(const char * orig)82 const char *zbx_alias_get(const char *orig)
83 {
84 ALIAS *alias;
85 size_t len_name, len_value;
86 ZBX_THREAD_LOCAL static char *buffer = NULL;
87 ZBX_THREAD_LOCAL static size_t buffer_alloc = 0;
88 size_t buffer_offset = 0;
89 const char *p = orig;
90
91 if (SUCCEED != parse_key(&p) || '\0' != *p)
92 return orig;
93
94 for (alias = aliasList; NULL != alias; alias = alias->next)
95 {
96 if (0 == strcmp(alias->name, orig))
97 return alias->value;
98 }
99
100 for (alias = aliasList; NULL != alias; alias = alias->next)
101 {
102 len_name = strlen(alias->name);
103 if (3 >= len_name || 0 != strcmp(alias->name + len_name - 3, "[*]"))
104 continue;
105
106 if (0 != strncmp(alias->name, orig, len_name - 2))
107 continue;
108
109 len_value = strlen(alias->value);
110 if (3 >= len_value || 0 != strcmp(alias->value + len_value - 3, "[*]"))
111 return alias->value;
112
113 zbx_strncpy_alloc(&buffer, &buffer_alloc, &buffer_offset, alias->value, len_value - 3);
114 zbx_strcpy_alloc(&buffer, &buffer_alloc, &buffer_offset, orig + len_name - 3);
115 return buffer;
116 }
117
118 return orig;
119 }
120