README.md

@@ -3,33 +3,15 @@ goutmp - Minimal bindings to C stdlib pututmpx(), getutmpx() (/var/log/wtmp) and
 Any Go program which allows user shell access should update the standard UNIX files which track user sessions: /var/log/wtmp (for the 'w' and 'who' commands), and /var/log/lastlog (the 'last' and 'lastlog' commands).
 
 ```
-$ go doc -all
+go doc
 package goutmp // import "blitter.com/go/goutmp"
 
 Golang bindings for basic login/utmp accounting
 
-FUNCTIONS
+type UtmpEntry struct{ ... }
-
-func GetHost(addr string) (h string)
-    return remote client hostname or IP if host lookup fails addr is expected to
-    be of the format given by net.Addr.String() eg., "127.0.0.1:80" or
-    "[::1]:80"
-
-func Put_lastlog_entry(app, usr, ptsname, host string)
-    Put the login app, username and originating host/IP to lastlog
 
+func Put_lastlog_entry(app string, usr string, host string)
 func Unput_utmp(entry UtmpEntry)
-    Remove a username/host entry from utmp
+func Put_utmp(user string, host string) UtmpEntry
-
-
-TYPES
-
-type UtmpEntry struct {
-	// Has unexported fields.
-}
-    UtmpEntry wraps the C struct utmp
-
-func Put_utmp(user, ptsName, host string) UtmpEntry
-    Put a username and the originating host/IP to utmp
 ```
 

go.mod

@@ -1,3 +0,0 @@
-module blitter.com/go/goutmp
-
-go 1.17

goutmp.go

@@ -1,5 +1,3 @@
-// +build linux
-
 // Golang bindings for basic login/utmp accounting
 package goutmp
 

goutmp_bsd.go

@@ -1,136 +0,0 @@
-// +build freebsd
-
-// Golang bindings for basic login/utmp accounting
-package goutmp
-
-//#include <stdio.h>
-//#include <stdlib.h>
-//#include <sys/file.h>
-//#include <string.h>
-//#include <unistd.h>
-//#include <stdint.h>
-//#include <time.h>
-//#include <pwd.h>
-//
-//#include <utmpx.h>
-//
-//typedef char char_t;
-//
-//void pututmpx(struct utmpx* entry, char* uname, char* ptsname, char* host) {
-//  entry->ut_type = USER_PROCESS;
-//  entry->ut_pid = getpid();
-//  strcpy(entry->ut_line, ptsname + strlen("/dev/"));
-//
-//  strcpy(entry->ut_id, ptsname + strlen("/dev/pts/"));
-//
-//  //entry->ut_time = time(NULL);
-//  strcpy(entry->ut_user, uname);
-//  strcpy(entry->ut_host, host);
-//  //entry->ut_addr = 0;
-//  setutxent();
-//  pututxline(entry);
-//}
-//
-//void unpututmpx(struct utmpx* entry) {
-//  entry->ut_type = DEAD_PROCESS;
-//  entry->ut_line[0] = '\0';
-//  //entry->ut_time = 0;
-//  entry->ut_user[0] = '\0';
-//  setutxent();
-//  pututxline(entry);
-//
-//  endutxent();
-//}
-//
-//#if 0
-//int putlastlogentry(int64_t t, int uid, char* line, char* host) {
-//  int retval = 0;
-//  FILE *f;
-//  struct lastlog l;
-//
-//  strncpy(l.ll_line, line, UT_LINESIZE);
-//  l.ll_line[UT_LINESIZE-1] = '\0';
-//  strncpy(l.ll_host, host, UT_HOSTSIZE);
-//  l.ll_host[UT_HOSTSIZE-1] = '\0';
-//
-//  l.ll_time = (time_t)t;
-//  //printf("l: ll_line '%s', ll_host '%s', ll_time %d\n", l.ll_line, l.ll_host, l.ll_time);
-//
-//  /* Write lastlog entry at fixed offset (uid * sizeof(struct lastlog) */
-//  if( NULL != (f = fopen("/var/log/lastlog", "rw+")) ) {
-//    if( !fseek(f, (uid * sizeof(struct lastlog)), SEEK_SET) ) {
-//      int fd = fileno(f);
-//      if( write(fd, &l, sizeof(l)) == sizeof(l) ) {
-//        retval = 1;
-//        //int32_t stat = system("echo ---- lastlog ----; lastlog");
-//      }
-//    }
-//    fclose(f);
-//  }
-//  return retval;
-//}
-//#else
-//int putlastlogentry(int64_t t, int uid, char* line, char* host) {
-//  return 0;
-//}
-//#endif
-import "C"
-
-import (
-	"fmt"
-	"net"
-	"os/user"
-	"strings"
-	"time"
-)
-
-// UtmpEntry wraps the C struct utmp
-type UtmpEntry struct {
-	entry C.struct_utmpx
-}
-
-// return remote client hostname or IP if host lookup fails
-// addr is expected to be of the format given by net.Addr.String()
-// eg., "127.0.0.1:80" or "[::1]:80"
-func GetHost(addr string) (h string) {
-	if !strings.Contains(addr, "[") {
-		h = strings.Split(addr, ":")[0]
-	} else {
-		h = strings.Split(strings.Split(addr, "[")[1], "]")[0]
-	}
-	hList, e := net.LookupAddr(h)
-	//fmt.Printf("lookupAddr:%v\n", hList)
-	if e == nil {
-		h = hList[0]
-	}
-	return
-}
-
-// Put a username and the originating host/IP to utmp
-func Put_utmp(user, ptsName, host string) UtmpEntry {
-	var entry UtmpEntry
-
-	//log.Println("Put_utmp:host ", host, " user ", user)
-	C.pututmpx(&entry.entry, C.CString(user), C.CString(ptsName), C.CString(host))
-	return entry
-}
-
-// Remove a username/host entry from utmp
-func Unput_utmp(entry UtmpEntry) {
-	C.unpututmpx(&entry.entry)
-}
-
-// Put the login app, username and originating host/IP to lastlog
-func Put_lastlog_entry(app, usr, ptsname, host string) {
-	u, e := user.Lookup(usr)
-	if e != nil {
-		return
-	}
-	var uid uint32
-	fmt.Sscanf(u.Uid, "%d", &uid)
-
-	t := time.Now().Unix()
-	_ = C.putlastlogentry(C.int64_t(t), C.int(uid), C.CString(app), C.CString(host))
-	//stat := C.putlastlogentry(C.int64_t(t), C.int(uid), C.CString(app), C.CString(host))
-	//fmt.Println("stat was:",stat)
-}

main/test.go

@@ -1,5 +1,3 @@
-// +build linux
-
 package main
 
 import (
@@ -11,8 +9,8 @@ import (
 func main() {
 	user := "bin"
 	host := "test.example.com"
-	utmp := goutmp.Put_utmp(user, "/dev/pts0", host)
+	utmp := goutmp.Put_utmp(user, host)
-	goutmp.Put_lastlog_entry("xs", user, "/dev/pts0", host)
+	goutmp.Put_lastlog_entry("hkexsh", user, host)
 	time.Sleep(10 * time.Second)
 	goutmp.Unput_utmp(utmp)
 }

main/test_bsd.go

@@ -1,18 +0,0 @@
-// +build freebsd
-
-package main
-
-import (
-	"time"
-
-	"blitter.com/go/goutmp"
-)
-
-func main() {
-	user := "bin"
-	host := "test.example.com"
-	utmp := goutmp.Put_utmp(user, "/dev/pts0", host)
-	goutmp.Put_lastlog_entry("xs", user, "/dev/pts0", host)
-	time.Sleep(10 * time.Second)
-	goutmp.Unput_utmp(utmp)
-}