52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
#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 || getenv("NEST_SANITY_CHECK_USERS_DEBUG")!=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 errno %s/%d)";
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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, res_errno);
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int send_alarm_result;
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send_alarm_result = send_alarm(notification_payload);
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free(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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