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#include <fcntl.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include "uw_tmp.h"
#include "strerr.h"
#include "sgetopt.h"
#include "seek.h"
#include "str.h"
#include "open.h"
#include "byte.h"
#include "lock.h"
#define USAGE " [-w] line"
#define FATAL "utmpset: fatal: "
#define WARNING "utmpset: warning: "
const char *progname;
void usage(void) { strerr_die4x(1, "usage: ", progname, USAGE, "\n"); }
int utmp_logout(const char *line) {
int fd;
uw_tmp ut;
int ok =-1;
if ((fd =open(UW_TMP_UFILE, O_RDWR, 0)) < 0)
strerr_die4sys(111, FATAL, "unable to open ", UW_TMP_UFILE, ": ");
if (lock_ex(fd) == -1)
strerr_die4sys(111, FATAL, "unable to lock: ", UW_TMP_UFILE, ": ");
while (read(fd, &ut, sizeof(uw_tmp)) == sizeof(uw_tmp)) {
if (!ut.ut_name[0] || (str_diff(ut.ut_line, line) != 0)) continue;
memset(ut.ut_name, 0, sizeof ut.ut_name);
memset(ut.ut_host, 0, sizeof ut.ut_host);
if (time(&ut.ut_time) == -1) break;
#ifdef DEAD_PROCESS
ut.ut_type =DEAD_PROCESS;
#endif
if (lseek(fd, -(off_t)sizeof(uw_tmp), SEEK_CUR) == -1) break;
if (write(fd, &ut, sizeof(uw_tmp)) != sizeof(uw_tmp)) break;
ok =1;
break;
}
close(fd);
return(ok);
}
int wtmp_logout(const char *line) {
int fd;
int len;
struct stat st;
uw_tmp ut;
if ((fd = open_append(UW_TMP_WFILE)) == -1)
strerr_die4sys(111, FATAL, "unable to open ", UW_TMP_WFILE, ": ");
if (lock_ex(fd) == -1)
strerr_die4sys(111, FATAL, "unable to lock ", UW_TMP_WFILE, ": ");
if (fstat(fd, &st) == -1) {
close(fd);
return(-1);
}
memset(&ut, 0, sizeof(uw_tmp));
if ((len =str_len(line)) > sizeof ut.ut_line) len =sizeof ut.ut_line -2;
byte_copy(ut.ut_line, len, line);
if (time(&ut.ut_time) == -1) {
close(fd);
return(-1);
}
#ifdef DEAD_PROCESS
ut.ut_type =DEAD_PROCESS;
#endif
if (write(fd, &ut, sizeof(uw_tmp)) != sizeof(uw_tmp)) {
ftruncate(fd, st.st_size);
close(fd);
return(-1);
}
close(fd);
return(1);
}
int main (int argc, const char * const *argv, const char * const *envp) {
int opt;
int wtmp =0;
progname =*argv;
while ((opt =getopt(argc, argv, "wV")) != opteof) {
switch(opt) {
case 'w':
wtmp =1;
break;
case 'V':
strerr_warn1("$Id: cb399098f794012a7f5e6a3a7090b2d53b86c08c $", 0);
case '?':
usage();
}
}
argv +=optind;
if (! argv || ! *argv) usage();
if (utmp_logout(*argv) == -1)
strerr_die4x(111, WARNING, "unable to logout line ", *argv,
" in utmp: no such entry");
if (wtmp)
if (wtmp_logout(*argv) == -1)
strerr_die4sys(111, WARNING,
"unable to logout line ", *argv, " in wtmp: ");
_exit(0);
}
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