---
Makefile | 2 ++
lastlog.1 | 12 ++++++++++
lastlog.c | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 93 insertions(+)
create mode 100644 lastlog.1
create mode 100644 lastlog.c
diff --git a/Makefile b/Makefile
index 5a3f0fd..e54e6fa 100644
--- a/Makefile
+++ b/Makefile
@@ -33,6 +33,7 @@ LIB = \
util/tty.o
SRC = \
+ lastlog.c \
chvt.c \
clear.c \
ctrlaltdel.c \
@@ -80,6 +81,7 @@ SRC = \
who.c
MAN1 = \
+ lastlog.1 \
chvt.1 \
clear.1 \
dd.1 \
diff --git a/lastlog.1 b/lastlog.1
new file mode 100644
index 0000000..ef0669b
--- /dev/null
+++ b/lastlog.1
@@ -0,0 +1,12 @@
+.TH LASTLOG 1 ubase-VERSION
+.SH NAME
+\fBlastlog\fR - Show last login of users
+.SH SYPNOSIS
+\fBlastlog\fI [user ...]
+.SH DESCRIPTION
+\fBlastlog\fR Show time, tty, and host (if it was a remote
+connexion) of last login of users. If some user names are passed
+as parameter then information about last login of these users is
+shown, otherwise is shown for all the users in /etc/passwd in the
+order they appear in it.
+
diff --git a/lastlog.c b/lastlog.c
new file mode 100644
index 0000000..f3fd221
--- /dev/null
+++ b/lastlog.c
@@ -0,0 +1,79 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <pwd.h>
+
+#ifdef USE_UTMPX
+# include <utmpx.h>
+#else
+# include <utmp.h>
+#endif
+
+#define LASTLOG "/var/log/lastlog"
+#define PASSWD "/etc/passwd"
+
+FILE *last;
+
+void
+lastlog(char *user)
+{
+ struct passwd *pwd;
+ struct lastlog ll;
+
+ if ((pwd = getpwnam(user)) == NULL) {
+ fprintf(stderr, "unknown user: %s\n", user);
+ return;
+ }
+
+ fseek(last, pwd->pw_uid * sizeof(struct lastlog), 0);
+ fread(&ll, sizeof(struct lastlog), 1, last);
+
+ if (ferror(last)) {
+ perror("error reading lastlog");
+ exit(-1);
+ }
+
+ printf("%-8.8s %-8.8s %-16.16s %s",
+ user, ll.ll_line, ll.ll_host, ctime(&ll.ll_time));
+}
+
+int
+main(int argc, char **argv)
+{
+ FILE *fp;
+ char line[512], *p;
+
+ if ((last = fopen(LASTLOG, "r")) == NULL) {
+ perror(LASTLOG);
+ exit(1);
+ }
+
+ if (argc > 1) {
+ while (*++argv)
+ lastlog(*argv);
+ } else {
+ if ((fp = fopen(PASSWD, "r")) == NULL) {
+ perror(PASSWD);
+ exit(1);
+ }
+ while ((fgets(line, sizeof(line), fp)) != NULL) {
+ if ((p = strchr(line, ':')) == NULL) {
+ fputs("incorrect password file", stderr);
+ exit(-1);
+ }
+ *p = '\0';
+ lastlog(line);
+ }
+ if (fclose(fp))
+ perror(PASSWD);
+ }
+
+ fclose(last);
+
+ return 0;
+}
+
--
1.9.3
