Implement checking whether LDAP users exist
This commit is contained in:
parent
4e17e2ddd5
commit
b43122a80f
6 changed files with 69 additions and 1 deletions
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@ -2,7 +2,7 @@ bin_PROGRAMS = nest-sanity
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noinst_PROGRAMS = notify-test
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noinst_PROGRAMS = notify-test
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nest_sanity_CFLAGS = $(LIBCURL_CFLAGS)
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nest_sanity_CFLAGS = $(LIBCURL_CFLAGS)
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nest_sanity_LDADD = $(LIBCURL_LIBS)
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nest_sanity_LDADD = $(LIBCURL_LIBS)
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nest_sanity_SOURCES = sanity.c notify.c runtime-config.c
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nest_sanity_SOURCES = sanity.c notify.c runtime-config.c check-users.c
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notify_test_CFLAGS = $(LIBCURL_CFLAGS)
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notify_test_CFLAGS = $(LIBCURL_CFLAGS)
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notify_test_LDADD = $(LIBCURL_LIBS)
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notify_test_LDADD = $(LIBCURL_LIBS)
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notify_test_SOURCES = notify.c runtime-config.c notify-test.c
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notify_test_SOURCES = notify.c runtime-config.c notify-test.c
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51
check-users.c
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51
check-users.c
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@ -0,0 +1,51 @@
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#include <sys/types.h>
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#include <pwd.h>
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#include "notify.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include "runtime-config.h"
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/* If samuel truly doesn't exist,
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* there's probably a bigger issue than just an LDAP failure.
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*/
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#define CHECK_USERS_CANARY_USER "samuel"
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int check_users_state;
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void check_users_init() {
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check_users_state = 0;
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}
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void check_users() {
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if(should_enable_debug()) {
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printf("[D] Starting check_users\n");
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}
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struct passwd *res;
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errno = 0;
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res = getpwnam(CHECK_USERS_CANARY_USER);
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if(res == NULL) {
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/* If we've already reported it, let's not report it again */
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if(check_users_state == 1) return;
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int res_errno;
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res_errno = errno;
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char *res_err_txt;
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res_err_txt = strerror(res_errno);
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char *notification_payload;
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int notification_payload_len;
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const char *notification_payload_fmt = "samuel doesn't exist, LDAP is probably broken somehow. (getpwnam returned %s)";
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/* TODO: set a realistic payload length */
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notification_payload_len = strlen(notification_payload_fmt) + strlen(res_err_txt) + 1;
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notification_payload = malloc(notification_payload_len+1);
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snprintf(notification_payload, notification_payload_len, notification_payload_fmt, res_err_txt);
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int send_alarm_result;
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send_alarm_result = send_alarm(notification_payload);
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/* We only set this to 1 if we successfully reported the issue. */
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if(send_alarm_result == 0) check_users_state = 1;
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}
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else {
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if(check_users_state > 0) {
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int send_alarm_result;
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send_alarm_result = send_alarm("samuel exists again, everything is probably okay now");
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/* Keep notifying until it sends successfully. */
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if(send_alarm_result == 0) check_users_state = 0;
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}
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}
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}
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5
check-users.h
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5
check-users.h
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@ -0,0 +1,5 @@
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#ifndef CHECK_USERS_H_INCLUDED
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#define CHECK_USERS_H_INCLUDED
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int check_users();
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void check_users_init();
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#endif
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@ -5,3 +5,6 @@ char *config_get_url() {
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/* TODO: find a better way to do this */
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/* TODO: find a better way to do this */
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return getenv("NOTIFY_URL");
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return getenv("NOTIFY_URL");
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}
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}
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int should_enable_debug() {
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return getenv("NEST_SANITY_DEBUG")!=NULL?1:0;
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}
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@ -1,4 +1,5 @@
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#ifndef RUNTIME_CONFIG_INCLUDED
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#ifndef RUNTIME_CONFIG_INCLUDED
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#define RUNTIME_CONFIG_INCLUDED
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#define RUNTIME_CONFIG_INCLUDED
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char *config_get_url();
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char *config_get_url();
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int should_enable_debug();
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#endif
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#endif
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8
sanity.c
8
sanity.c
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@ -1,7 +1,15 @@
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#include <stdlib.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include "runtime-config.h"
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#include "runtime-config.h"
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#include "notify.h"
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#include "notify.h"
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#include "check-users.h"
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int main() {
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int main() {
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notify_init_early();
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notify_init_early();
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notify_init();
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notify_init();
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check_users_init();
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while(true) {
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check_users();
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sleep(30);
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}
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}
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}
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