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authorLorenz Kästle <12514511+RincewindsHat@users.noreply.github.com>2024-10-31 13:14:31 (GMT)
committerLorenz Kästle <12514511+RincewindsHat@users.noreply.github.com>2024-10-31 13:14:31 (GMT)
commit92d18a18d1250f74505790639ddcde6ff9b212cc (patch)
tree3a9b7bdbcceb44eeebd77fb77f09a54315fdb80c
parent35723950547b06a359bac9a767d2a6f1520926b7 (diff)
downloadmonitoring-plugins-92d18a18d1250f74505790639ddcde6ff9b212cc.tar.gz
check_users: clang-format
-rw-r--r--plugins/check_users.c265
1 files changed, 125 insertions, 140 deletions
diff --git a/plugins/check_users.c b/plugins/check_users.c
index 89b9536..1ff7fe6 100644
--- a/plugins/check_users.c
+++ b/plugins/check_users.c
@@ -1,34 +1,34 @@
1/***************************************************************************** 1/*****************************************************************************
2* 2 *
3* Monitoring check_users plugin 3 * Monitoring check_users plugin
4* 4 *
5* License: GPL 5 * License: GPL
6* Copyright (c) 2000-2012 Monitoring Plugins Development Team 6 * Copyright (c) 2000-2012 Monitoring Plugins Development Team
7* 7 *
8* Description: 8 * Description:
9* 9 *
10* This file contains the check_users plugin 10 * This file contains the check_users plugin
11* 11 *
12* This plugin checks the number of users currently logged in on the local 12 * This plugin checks the number of users currently logged in on the local
13* system and generates an error if the number exceeds the thresholds 13 * system and generates an error if the number exceeds the thresholds
14* specified. 14 * specified.
15* 15 *
16* 16 *
17* This program is free software: you can redistribute it and/or modify 17 * This program is free software: you can redistribute it and/or modify
18* it under the terms of the GNU General Public License as published by 18 * it under the terms of the GNU General Public License as published by
19* the Free Software Foundation, either version 3 of the License, or 19 * the Free Software Foundation, either version 3 of the License, or
20* (at your option) any later version. 20 * (at your option) any later version.
21* 21 *
22* This program is distributed in the hope that it will be useful, 22 * This program is distributed in the hope that it will be useful,
23* but WITHOUT ANY WARRANTY; without even the implied warranty of 23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25* GNU General Public License for more details. 25 * GNU General Public License for more details.
26* 26 *
27* You should have received a copy of the GNU General Public License 27 * You should have received a copy of the GNU General Public License
28* along with this program. If not, see <http://www.gnu.org/licenses/>. 28 * along with this program. If not, see <http://www.gnu.org/licenses/>.
29* 29 *
30* 30 *
31*****************************************************************************/ 31 *****************************************************************************/
32 32
33const char *progname = "check_users"; 33const char *progname = "check_users";
34const char *copyright = "2000-2007"; 34const char *copyright = "2000-2007";
@@ -38,34 +38,32 @@ const char *email = "devel@monitoring-plugins.org";
38#include "utils.h" 38#include "utils.h"
39 39
40#if HAVE_WTSAPI32_H 40#if HAVE_WTSAPI32_H
41# include <windows.h> 41# include <windows.h>
42# include <wtsapi32.h> 42# include <wtsapi32.h>
43# undef ERROR 43# undef ERROR
44# define ERROR -1 44# define ERROR -1
45#elif HAVE_UTMPX_H 45#elif HAVE_UTMPX_H
46# include <utmpx.h> 46# include <utmpx.h>
47#else 47#else
48# include "popen.h" 48# include "popen.h"
49#endif 49#endif
50 50
51#ifdef HAVE_LIBSYSTEMD 51#ifdef HAVE_LIBSYSTEMD
52#include <systemd/sd-daemon.h> 52# include <systemd/sd-daemon.h>
53#include <systemd/sd-login.h> 53# include <systemd/sd-login.h>
54#endif 54#endif
55 55
56#define possibly_set(a,b) ((a) == 0 ? (b) : 0) 56#define possibly_set(a, b) ((a) == 0 ? (b) : 0)
57 57
58int process_arguments (int, char **); 58int process_arguments(int, char **);
59void print_help (void); 59void print_help(void);
60void print_usage (void); 60void print_usage(void);
61 61
62char *warning_range = NULL; 62char *warning_range = NULL;
63char *critical_range = NULL; 63char *critical_range = NULL;
64thresholds *thlds = NULL; 64thresholds *thlds = NULL;
65 65
66int 66int main(int argc, char **argv) {
67main (int argc, char **argv)
68{
69 int users = -1; 67 int users = -1;
70 int result = STATE_UNKNOWN; 68 int result = STATE_UNKNOWN;
71#if HAVE_WTSAPI32_H 69#if HAVE_WTSAPI32_H
@@ -78,74 +76,71 @@ main (int argc, char **argv)
78 char input_buffer[MAX_INPUT_BUFFER]; 76 char input_buffer[MAX_INPUT_BUFFER];
79#endif 77#endif
80 78
81 setlocale (LC_ALL, ""); 79 setlocale(LC_ALL, "");
82 bindtextdomain (PACKAGE, LOCALEDIR); 80 bindtextdomain(PACKAGE, LOCALEDIR);
83 textdomain (PACKAGE); 81 textdomain(PACKAGE);
84 82
85 /* Parse extra opts if any */ 83 /* Parse extra opts if any */
86 argv = np_extra_opts (&argc, argv, progname); 84 argv = np_extra_opts(&argc, argv, progname);
87 85
88 if (process_arguments (argc, argv) == ERROR) 86 if (process_arguments(argc, argv) == ERROR)
89 usage4 (_("Could not parse arguments")); 87 usage4(_("Could not parse arguments"));
90 88
91 users = 0; 89 users = 0;
92 90
93#ifdef HAVE_LIBSYSTEMD 91#ifdef HAVE_LIBSYSTEMD
94 if (sd_booted () > 0) 92 if (sd_booted() > 0)
95 users = sd_get_sessions (NULL); 93 users = sd_get_sessions(NULL);
96 else { 94 else {
97#endif 95#endif
98#if HAVE_WTSAPI32_H 96#if HAVE_WTSAPI32_H
99 if (!WTSEnumerateSessions(WTS_CURRENT_SERVER_HANDLE, 97 if (!WTSEnumerateSessions(WTS_CURRENT_SERVER_HANDLE, 0, 1, &wtsinfo, &wtscount)) {
100 0, 1, &wtsinfo, &wtscount)) { 98 printf(_("Could not enumerate RD sessions: %d\n"), GetLastError());
101 printf(_("Could not enumerate RD sessions: %d\n"), GetLastError()); 99 return STATE_UNKNOWN;
102 return STATE_UNKNOWN; 100 }
103 }
104 101
105 for (index = 0; index < wtscount; index++) { 102 for (index = 0; index < wtscount; index++) {
106 LPTSTR username; 103 LPTSTR username;
107 DWORD size; 104 DWORD size;
108 int len; 105 int len;
109 106
110 if (!WTSQuerySessionInformation(WTS_CURRENT_SERVER_HANDLE, 107 if (!WTSQuerySessionInformation(WTS_CURRENT_SERVER_HANDLE, wtsinfo[index].SessionId, WTSUserName, &username, &size))
111 wtsinfo[index].SessionId, WTSUserName, &username, &size)) 108 continue;
112 continue;
113 109
114 len = lstrlen(username); 110 len = lstrlen(username);
115 111
116 WTSFreeMemory(username); 112 WTSFreeMemory(username);
117 113
118 if (len == 0) 114 if (len == 0)
119 continue; 115 continue;
120 116
121 if (wtsinfo[index].State == WTSActive || 117 if (wtsinfo[index].State == WTSActive || wtsinfo[index].State == WTSDisconnected)
122 wtsinfo[index].State == WTSDisconnected) 118 users++;
123 users++; 119 }
124 }
125 120
126 WTSFreeMemory(wtsinfo); 121 WTSFreeMemory(wtsinfo);
127#elif HAVE_UTMPX_H 122#elif HAVE_UTMPX_H
128 /* get currently logged users from utmpx */ 123 /* get currently logged users from utmpx */
129 setutxent (); 124 setutxent();
130 125
131 while ((putmpx = getutxent ()) != NULL) 126 while ((putmpx = getutxent()) != NULL)
132 if (putmpx->ut_type == USER_PROCESS) 127 if (putmpx->ut_type == USER_PROCESS)
133 users++; 128 users++;
134 129
135 endutxent (); 130 endutxent();
136#else 131#else
137 /* run the command */ 132 /* run the command */
138 child_process = spopen (WHO_COMMAND); 133 child_process = spopen(WHO_COMMAND);
139 if (child_process == NULL) { 134 if (child_process == NULL) {
140 printf (_("Could not open pipe: %s\n"), WHO_COMMAND); 135 printf(_("Could not open pipe: %s\n"), WHO_COMMAND);
141 return STATE_UNKNOWN; 136 return STATE_UNKNOWN;
142 } 137 }
143 138
144 child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r"); 139 child_stderr = fdopen(child_stderr_array[fileno(child_process)], "r");
145 if (child_stderr == NULL) 140 if (child_stderr == NULL)
146 printf (_("Could not open stderr for %s\n"), WHO_COMMAND); 141 printf(_("Could not open stderr for %s\n"), WHO_COMMAND);
147 142
148 while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) { 143 while (fgets(input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
149 /* increment 'users' on all lines except total user count */ 144 /* increment 'users' on all lines except total user count */
150 if (input_buffer[0] != '#') { 145 if (input_buffer[0] != '#') {
151 users++; 146 users++;
@@ -153,18 +148,18 @@ main (int argc, char **argv)
153 } 148 }
154 149
155 /* get total logged in users */ 150 /* get total logged in users */
156 if (sscanf (input_buffer, _("# users=%d"), &users) == 1) 151 if (sscanf(input_buffer, _("# users=%d"), &users) == 1)
157 break; 152 break;
158 } 153 }
159 154
160 /* check STDERR */ 155 /* check STDERR */
161 if (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr)) 156 if (fgets(input_buffer, MAX_INPUT_BUFFER - 1, child_stderr))
162 result = possibly_set (result, STATE_UNKNOWN); 157 result = possibly_set(result, STATE_UNKNOWN);
163 (void) fclose (child_stderr); 158 (void)fclose(child_stderr);
164 159
165 /* close the pipe */ 160 /* close the pipe */
166 if (spclose (child_process)) 161 if (spclose(child_process))
167 result = possibly_set (result, STATE_UNKNOWN); 162 result = possibly_set(result, STATE_UNKNOWN);
168#endif 163#endif
169#ifdef HAVE_LIBSYSTEMD 164#ifdef HAVE_LIBSYSTEMD
170 } 165 }
@@ -174,53 +169,47 @@ main (int argc, char **argv)
174 result = get_status((double)users, thlds); 169 result = get_status((double)users, thlds);
175 170
176 if (result == STATE_UNKNOWN) 171 if (result == STATE_UNKNOWN)
177 printf ("%s\n", _("Unable to read output")); 172 printf("%s\n", _("Unable to read output"));
178 else { 173 else {
179 printf (_("USERS %s - %d users currently logged in |%s\n"), 174 printf(_("USERS %s - %d users currently logged in |%s\n"), state_text(result), users,
180 state_text(result), users, 175 sperfdata_int("users", users, "", warning_range, critical_range, true, 0, false, 0));
181 sperfdata_int("users", users, "", warning_range,
182 critical_range, true, 0, false, 0));
183 } 176 }
184 177
185 return result; 178 return result;
186} 179}
187 180
188/* process command-line arguments */ 181/* process command-line arguments */
189int 182int process_arguments(int argc, char **argv) {
190process_arguments (int argc, char **argv)
191{
192 int c; 183 int c;
193 int option = 0; 184 int option = 0;
194 static struct option longopts[] = { 185 static struct option longopts[] = {{"critical", required_argument, 0, 'c'},
195 {"critical", required_argument, 0, 'c'}, 186 {"warning", required_argument, 0, 'w'},
196 {"warning", required_argument, 0, 'w'}, 187 {"version", no_argument, 0, 'V'},
197 {"version", no_argument, 0, 'V'}, 188 {"help", no_argument, 0, 'h'},
198 {"help", no_argument, 0, 'h'}, 189 {0, 0, 0, 0}};
199 {0, 0, 0, 0}
200 };
201 190
202 if (argc < 2) 191 if (argc < 2)
203 usage ("\n"); 192 usage("\n");
204 193
205 while (true) { 194 while (true) {
206 c = getopt_long (argc, argv, "+hVvc:w:", longopts, &option); 195 c = getopt_long(argc, argv, "+hVvc:w:", longopts, &option);
207 196
208 if (c == -1 || c == EOF || c == 1) 197 if (c == -1 || c == EOF || c == 1)
209 break; 198 break;
210 199
211 switch (c) { 200 switch (c) {
212 case '?': /* print short usage statement if args not parsable */ 201 case '?': /* print short usage statement if args not parsable */
213 usage5 (); 202 usage5();
214 case 'h': /* help */ 203 case 'h': /* help */
215 print_help (); 204 print_help();
216 exit (STATE_UNKNOWN); 205 exit(STATE_UNKNOWN);
217 case 'V': /* version */ 206 case 'V': /* version */
218 print_revision (progname, NP_VERSION); 207 print_revision(progname, NP_VERSION);
219 exit (STATE_UNKNOWN); 208 exit(STATE_UNKNOWN);
220 case 'c': /* critical */ 209 case 'c': /* critical */
221 critical_range = optarg; 210 critical_range = optarg;
222 break; 211 break;
223 case 'w': /* warning */ 212 case 'w': /* warning */
224 warning_range = optarg; 213 warning_range = optarg;
225 break; 214 break;
226 } 215 }
@@ -235,48 +224,44 @@ process_arguments (int argc, char **argv)
235 critical_range = argv[c++]; 224 critical_range = argv[c++];
236 225
237 /* this will abort in case of invalid ranges */ 226 /* this will abort in case of invalid ranges */
238 set_thresholds (&thlds, warning_range, critical_range); 227 set_thresholds(&thlds, warning_range, critical_range);
239 228
240 if (!thlds->warning) { 229 if (!thlds->warning) {
241 usage4 (_("Warning threshold must be a valid range expression")); 230 usage4(_("Warning threshold must be a valid range expression"));
242 } 231 }
243 232
244 if (!thlds->critical) { 233 if (!thlds->critical) {
245 usage4 (_("Critical threshold must be a valid range expression")); 234 usage4(_("Critical threshold must be a valid range expression"));
246 } 235 }
247 236
248 return OK; 237 return OK;
249} 238}
250 239
251void 240void print_help(void) {
252print_help (void) 241 print_revision(progname, NP_VERSION);
253{
254 print_revision (progname, NP_VERSION);
255 242
256 printf ("Copyright (c) 1999 Ethan Galstad\n"); 243 printf("Copyright (c) 1999 Ethan Galstad\n");
257 printf (COPYRIGHT, copyright, email); 244 printf(COPYRIGHT, copyright, email);
258 245
259 printf ("%s\n", _("This plugin checks the number of users currently logged in on the local")); 246 printf("%s\n", _("This plugin checks the number of users currently logged in on the local"));
260 printf ("%s\n", _("system and generates an error if the number exceeds the thresholds specified.")); 247 printf("%s\n", _("system and generates an error if the number exceeds the thresholds specified."));
261 248
262 printf ("\n\n"); 249 printf("\n\n");
263 250
264 print_usage (); 251 print_usage();
265 252
266 printf (UT_HELP_VRSN); 253 printf(UT_HELP_VRSN);
267 printf (UT_EXTRA_OPTS); 254 printf(UT_EXTRA_OPTS);
268 255
269 printf (" %s\n", "-w, --warning=RANGE_EXPRESSION"); 256 printf(" %s\n", "-w, --warning=RANGE_EXPRESSION");
270 printf (" %s\n", _("Set WARNING status if number of logged in users violates RANGE_EXPRESSION")); 257 printf(" %s\n", _("Set WARNING status if number of logged in users violates RANGE_EXPRESSION"));
271 printf (" %s\n", "-c, --critical=RANGE_EXPRESSION"); 258 printf(" %s\n", "-c, --critical=RANGE_EXPRESSION");
272 printf (" %s\n", _("Set CRITICAL status if number of logged in users violates RANGE_EXPRESSION")); 259 printf(" %s\n", _("Set CRITICAL status if number of logged in users violates RANGE_EXPRESSION"));
273 260
274 printf (UT_SUPPORT); 261 printf(UT_SUPPORT);
275} 262}
276 263
277void 264void print_usage(void) {
278print_usage (void) 265 printf("%s\n", _("Usage:"));
279{ 266 printf("%s -w <users> -c <users>\n", progname);
280 printf ("%s\n", _("Usage:"));
281 printf ("%s -w <users> -c <users>\n", progname);
282} 267}