1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/*
* Copyright 2010-2022 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <errno.h>
#include <unistd.h>
#include <dirent.h>
#include <grp.h>
#include <string.h>
#include <sys/time.h>
#include <sys/resource.h>
#include "crm/crm.h"
#include <crm/msg_xml.h>
#include "crm/common/mainloop.h"
#include "crm/services.h"
#include "services_private.h"
#include "services_nagios.h"
/*!
* \internal
* \brief Prepare a Nagios action
*
* \param[in,out] op Action to prepare
*
* \return Standard Pacemaker return code
*/
int
services__nagios_prepare(svc_action_t *op)
{
op->opaque->exec = pcmk__full_path(op->agent, NAGIOS_PLUGIN_DIR);
op->opaque->args[0] = strdup(op->opaque->exec);
if (op->opaque->args[0] == NULL) {
return ENOMEM;
}
if (pcmk__str_eq(op->action, "monitor", pcmk__str_casei)
&& (op->interval_ms == 0)) {
// Invoke --version for a nagios probe
op->opaque->args[1] = strdup("--version");
if (op->opaque->args[1] == NULL) {
return ENOMEM;
}
} else if (op->params != NULL) {
GHashTableIter iter;
char *key = NULL;
char *value = NULL;
int index = 1; // 0 is already set to executable name
g_hash_table_iter_init(&iter, op->params);
while (g_hash_table_iter_next(&iter, (gpointer *) & key,
(gpointer *) & value)) {
if (index > (PCMK__NELEM(op->opaque->args) - 2)) {
return E2BIG;
}
if (pcmk__str_eq(key, XML_ATTR_CRM_VERSION, pcmk__str_casei)
|| strstr(key, CRM_META "_")) {
continue;
}
op->opaque->args[index++] = crm_strdup_printf("--%s", key);
op->opaque->args[index++] = strdup(value);
if (op->opaque->args[index - 1] == NULL) {
return ENOMEM;
}
}
}
// Nagios actions don't need to keep the parameters
if (op->params != NULL) {
g_hash_table_destroy(op->params);
op->params = NULL;
}
return pcmk_rc_ok;
}
/*!
* \internal
* \brief Map a Nagios result to a standard OCF result
*
* \param[in] exit_status Nagios exit status
*
* \return Standard OCF result
*/
enum ocf_exitcode
services__nagios2ocf(int exit_status)
{
switch (exit_status) {
case NAGIOS_STATE_OK:
return PCMK_OCF_OK;
case NAGIOS_INSUFFICIENT_PRIV:
return PCMK_OCF_INSUFFICIENT_PRIV;
case NAGIOS_STATE_WARNING:
return PCMK_OCF_DEGRADED;
case NAGIOS_STATE_CRITICAL:
case NAGIOS_STATE_UNKNOWN:
default:
return PCMK_OCF_UNKNOWN_ERROR;
}
}
static inline char *
nagios_metadata_name(const char *plugin)
{
return crm_strdup_printf(NAGIOS_METADATA_DIR "/%s.xml", plugin);
}
GList *
services__list_nagios_agents(void)
{
GList *plugin_list = NULL;
GList *result = NULL;
plugin_list = services_os_get_directory_list(NAGIOS_PLUGIN_DIR, TRUE, TRUE);
// Return only the plugins that have metadata
for (GList *gIter = plugin_list; gIter != NULL; gIter = gIter->next) {
struct stat st;
const char *plugin = gIter->data;
char *metadata = nagios_metadata_name(plugin);
if (stat(metadata, &st) == 0) {
result = g_list_append(result, strdup(plugin));
}
free(metadata);
}
g_list_free_full(plugin_list, free);
return result;
}
gboolean
services__nagios_agent_exists(const char *name)
{
char *buf = NULL;
gboolean rc = FALSE;
struct stat st;
if (name == NULL) {
return rc;
}
buf = crm_strdup_printf(NAGIOS_PLUGIN_DIR "/%s", name);
if (stat(buf, &st) == 0) {
rc = TRUE;
}
free(buf);
return rc;
}
int
services__get_nagios_metadata(const char *type, char **output)
{
int rc = pcmk_ok;
FILE *file_strm = NULL;
int start = 0, length = 0, read_len = 0;
char *metadata_file = nagios_metadata_name(type);
file_strm = fopen(metadata_file, "r");
if (file_strm == NULL) {
crm_err("Metadata file %s does not exist", metadata_file);
free(metadata_file);
return -EIO;
}
/* see how big the file is */
start = ftell(file_strm);
fseek(file_strm, 0L, SEEK_END);
length = ftell(file_strm);
fseek(file_strm, 0L, start);
CRM_ASSERT(length >= 0);
CRM_ASSERT(start == ftell(file_strm));
if (length <= 0) {
crm_info("%s was not valid", metadata_file);
free(*output);
*output = NULL;
rc = -EIO;
} else {
crm_trace("Reading %d bytes from file", length);
*output = calloc(1, (length + 1));
read_len = fread(*output, 1, length, file_strm);
if (read_len != length) {
crm_err("Calculated and read bytes differ: %d vs. %d",
length, read_len);
free(*output);
*output = NULL;
rc = -EIO;
}
}
fclose(file_strm);
free(metadata_file);
return rc;
}
|
