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- #include <sys/types.h>
- #include <sys/time.h>
- #include <utmpx.h>
- #include <string.h>
- #include <syslog.h>
-
- /* sysv_utmp_init - allocate utmp entry before login, update wtmp */
-
- sysv_utmp_init(line, user, tag)
- char *line;
- char *user;
- char *tag;
- {
- struct utmpx utx;
- int num;
-
- memset((char *) &utx, 0, sizeof(utx));
-
- /* Derive utmp ID from pty slave number and application-specific tag. */
-
- if (sscanf(line, "%*[^0-9]%d", &num) != 1 || num > 255) {
- syslog(LOG_ERR, "unparseable pty name: %s", line);
- _exit(1);
- }
- sprintf(utx.ut_id, "%.2s%02x", tag, num);
- strncpy(utx.ut_user, user, sizeof(utx.ut_user));
- strncpy(utx.ut_line, line, sizeof(utx.ut_line));
- utx.ut_pid = getpid();
- utx.ut_type = LOGIN_PROCESS;
- gettimeofday(&(utx.ut_tv));
- pututxline(&utx);
- updwtmpx(WTMPX_FILE, &utx);
- endutxent();
- }
-
- /* sysv_utmp_login - update utmp and wtmp after login */
-
- sysv_utmp_login(line, user, host)
- char *line;
- char *user;
- char *host;
- {
- struct utmpx utx;
- struct utmpx *ut;
- pid_t mypid = getpid();
- int ret = (-1);
-
- /*
- * SYSV4 login cannot not use getutxline() here, because telnetd/rlogind
- * create entries with line == /dev/pts/XXX, and other processes might do
- * the same.
- */
-
- while ((ut = getutxent())) {
- if (ut->ut_pid == mypid
- && (ut->ut_type == LOGIN_PROCESS || ut->ut_type == USER_PROCESS)) {
- strncpy(ut->ut_line, line, sizeof(ut->ut_line));
- strncpy(ut->ut_user, user, sizeof(ut->ut_user));
- strncpy(ut->ut_host, host, sizeof(ut->ut_host));
- ut->ut_syslen = strlen(host) + 1;
- if (ut->ut_syslen > sizeof(ut->ut_host))
- ut->ut_syslen = sizeof(ut->ut_host);
- ut->ut_type = USER_PROCESS;
- gettimeofday(&(ut->ut_tv));
- pututxline(ut);
- updwtmpx(WTMPX_FILE, ut);
- ret = 0;
- break;
- }
- }
- endutxent();
- return (ret);
- }
-
- /* sysv_utmp_logout - update utmp and wtmp after logout */
-
- sysv_utmp_logout(line)
- char *line;
- {
- struct utmpx utx;
- struct utmpx *ut;
-
- strncpy(utx.ut_line, line, sizeof(utx.ut_line));
-
- if ((ut = getutxline(&utx)) == 0) {
- syslog(LOG_ERR, "%s: utmp entry not found", line);
- } else {
- ut->ut_type = DEAD_PROCESS;
- ut->ut_exit.e_termination = 0;
- ut->ut_exit.e_exit = 0;
- gettimeofday(&(ut->ut_tv));
- pututxline(ut);
- updwtmpx(WTMPX_FILE, ut);
- }
- endutxent();
- }
-