From 3bca4faef65f9ba97abad49505e10c675894c559 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@sbcglobal.net>
Date: Sat, 29 Aug 2015 23:19:55 -0600
Subject: stuff

---
 src/nshd/hackers_git/hackers_parse.go | 43 ++++++++++++++++++++++++++++++++---
 src/nshd/hackers_git/name2gid.go      | 41 +++++++++++++++++++++++++++++++++
 2 files changed, 81 insertions(+), 3 deletions(-)
 create mode 100644 src/nshd/hackers_git/name2gid.go

(limited to 'src')

diff --git a/src/nshd/hackers_git/hackers_parse.go b/src/nshd/hackers_git/hackers_parse.go
index efc30a5..5152b55 100644
--- a/src/nshd/hackers_git/hackers_parse.go
+++ b/src/nshd/hackers_git/hackers_parse.go
@@ -1,13 +1,50 @@
 package hackers_git
 
 import (
-	_ "gopkg.in/yaml.v2"
+	"fmt"
+	yaml "gopkg.in/yaml.v2"
+	"io/ioutil"
 	"nslcd_proto"
+	"os"
 )
 
-func load_user_yaml(filename string) (nslcd_proto.Passwd, error) {
+type yaml_user struct {
+	username string
+	fullname string
+	shell    string
+	groups   []string
+}
+
+func filename2uid(filename string) int32 {
 	// TODO
-	return nslcd_proto.Passwd{}, nil
+	return 0
+}
+
+func load_user_yaml(filename string) (ret nslcd_proto.Passwd, err error) {
+	ret.UID = filename2uid(filename)
+	if ret.UID < 0 {
+		err = fmt.Errorf("Invalid user filename: %q", filename)
+		return
+	}
+	file, err := os.Open(filename)
+	if err != nil {
+		return
+	}
+	contents, err := ioutil.ReadAll(file)
+	if err != nil {
+		return
+	}
+	var user yaml_user
+	err = yaml.Unmarshal(contents, &user)
+
+	ret.Name = user.username
+	ret.Password = "x"
+	ret.GID = name2gid("users")
+	ret.GECOS = user.fullname
+	ret.HomeDir = "/home/" + ret.Name
+	ret.Shell = user.shell
+
+	return
 }
 
 func load_user_password(filename string) string {
diff --git a/src/nshd/hackers_git/name2gid.go b/src/nshd/hackers_git/name2gid.go
new file mode 100644
index 0000000..b33e6aa
--- /dev/null
+++ b/src/nshd/hackers_git/name2gid.go
@@ -0,0 +1,41 @@
+package hackers_git
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+//#include <stdlib.h> /* free */
+//#include <unistd.h> /* sysconf */
+//#include <grp.h>    /* getgrnam_r */
+import "C"
+
+func name2gid(name string) (gid int32) {
+	nameC := C.CString(name)
+	defer C.free(unsafe.Pointer(nameC))
+
+	gid = -1
+	buflen := C.sysconf(C._SC_GETGR_R_SIZE_MAX)
+	if buflen < 1 {
+		buflen = 1024
+	}
+	buf := make([]byte, buflen)
+	var grp C.struct_group
+	var ret *C.struct_group
+	for {
+		success, errno := C.getgrnam_r(nameC, &grp, (*C.char)(unsafe.Pointer(&buf[0])), C.size_t(buflen), &ret)
+		if success >= 0 {
+			break
+		}
+		if errno == syscall.ERANGE {
+			buflen += 256
+			buf = make([]byte, buflen)
+		} else {
+			return
+		}
+	}
+	if ret != nil {
+		gid = int32(ret.gr_gid)
+	}
+	return
+}
-- 
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