From 374311b891c587bbeb554057e04b55f69073d1af Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@sbcglobal.net>
Date: Fri, 3 Feb 2017 02:44:33 -0500
Subject: Less magic in the build system; don't hide the go workspace.

---
 go/src/nshd/nslcd_backend/db_group.go | 141 ++++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 go/src/nshd/nslcd_backend/db_group.go

(limited to 'go/src/nshd/nslcd_backend/db_group.go')

diff --git a/go/src/nshd/nslcd_backend/db_group.go b/go/src/nshd/nslcd_backend/db_group.go
new file mode 100644
index 0000000..04c7e3b
--- /dev/null
+++ b/go/src/nshd/nslcd_backend/db_group.go
@@ -0,0 +1,141 @@
+// Copyright 2015-2016 Luke Shumaker <lukeshu@sbcglobal.net>.
+//
+// This is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of
+// the License, or (at your option) any later version.
+//
+// This software is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public
+// License along with this manual; if not, see
+// <http://www.gnu.org/licenses/>.
+
+package nslcd_backend
+
+import (
+	"nshd/util"
+
+	p "git.lukeshu.com/go/libnslcd/nslcd_proto"
+	s "golang.org/x/sys/unix"
+)
+
+func (o *Hackers) groupByName(name string, users bool) p.Group {
+	members_set, found := o.groups[name]
+	if !found {
+		return p.Group{ID: -1}
+	}
+	gid := name2gid(name)
+	if gid < 0 {
+		return p.Group{ID: -1}
+	}
+	var members_list []string
+	if users {
+		members_list = util.Set2list(members_set)
+	} else {
+		members_list = make([]string, 0)
+	}
+	return p.Group{
+		Name:    name,
+		PwHash:  "x",
+		ID:      gid,
+		Members: members_list,
+	}
+}
+
+func (o *Hackers) groupByGid(gid int32, users bool) p.Group {
+	name, found := gid2name(gid)
+	if !found {
+		return p.Group{ID: -1}
+	}
+	members_set, found := o.groups[name]
+	if !found {
+		return p.Group{ID: -1}
+	}
+	var members_list []string
+	if users {
+		members_list = util.Set2list(members_set)
+	} else {
+		members_list = make([]string, 0)
+	}
+	return p.Group{
+		Name:    name,
+		PwHash:  "x",
+		ID:      gid,
+		Members: members_list,
+	}
+}
+
+func (o *Hackers) Group_ByName(cred s.Ucred, req p.Request_Group_ByName) <-chan p.Group {
+	o.lock.RLock()
+	ret := make(chan p.Group)
+	go func() {
+		defer o.lock.RUnlock()
+		defer close(ret)
+
+		group := o.groupByName(req.Name, true)
+		if group.ID < 0 {
+			return
+		}
+		ret <- group
+	}()
+	return ret
+}
+
+func (o *Hackers) Group_ByGid(cred s.Ucred, req p.Request_Group_ByGid) <-chan p.Group {
+	o.lock.RLock()
+	ret := make(chan p.Group)
+	go func() {
+		defer o.lock.RUnlock()
+		defer close(ret)
+
+		group := o.groupByGid(req.Gid, true)
+		if group.ID < 0 {
+			return
+		}
+		ret <- group
+	}()
+	return ret
+}
+
+// note that the BYMEMBER call returns an empty members list
+func (o *Hackers) Group_ByMember(cred s.Ucred, req p.Request_Group_ByMember) <-chan p.Group {
+	o.lock.RLock()
+	ret := make(chan p.Group)
+	go func() {
+		defer o.lock.RUnlock()
+		defer close(ret)
+
+		uid := o.name2uid(req.Member)
+		if uid < 0 {
+			return
+		}
+		for _, name := range o.users[uid].Groups {
+			group := o.groupByName(name, false)
+			if group.ID >= 0 {
+				ret <- group
+			}
+		}
+	}()
+	return ret
+}
+
+func (o *Hackers) Group_All(cred s.Ucred, req p.Request_Group_All) <-chan p.Group {
+	o.lock.RLock()
+	ret := make(chan p.Group)
+	go func() {
+		defer o.lock.RUnlock()
+		defer close(ret)
+
+		for name, _ := range o.groups {
+			group := o.groupByName(name, true)
+			if group.ID >= 0 {
+				ret <- group
+			}
+		}
+	}()
+	return ret
+}
-- 
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