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-rw-r--r--go/cmd-nshd/.gitignore1
-rw-r--r--go/cmd-nshd/main.go.in34
m---------go/gopkg.in/yaml.v20
m---------go/lukeshu.com/git/go/libgnulinux.git0
m---------go/lukeshu.com/git/go/libnslcd.git0
m---------go/lukeshu.com/git/go/libsystemd.git0
-rw-r--r--go/parabola_hackers/.gitignore2
-rw-r--r--go/parabola_hackers/nslcd_backend/db_config.go40
-rw-r--r--go/parabola_hackers/nslcd_backend/db_group.go141
-rw-r--r--go/parabola_hackers/nslcd_backend/db_pam.go167
-rw-r--r--go/parabola_hackers/nslcd_backend/db_passwd.go82
-rw-r--r--go/parabola_hackers/nslcd_backend/db_shadow.go78
-rw-r--r--go/parabola_hackers/nslcd_backend/hackers.go122
-rw-r--r--go/parabola_hackers/nslcd_backend/util.go58
-rw-r--r--go/parabola_hackers/passwords.go.in97
-rw-r--r--go/parabola_hackers/users.go.in141
-rw-r--r--go/parabola_hackers/util.go47
17 files changed, 1010 insertions, 0 deletions
diff --git a/go/cmd-nshd/.gitignore b/go/cmd-nshd/.gitignore
new file mode 100644
index 0000000..00870e2
--- /dev/null
+++ b/go/cmd-nshd/.gitignore
@@ -0,0 +1 @@
+/main.go
diff --git a/go/cmd-nshd/main.go.in b/go/cmd-nshd/main.go.in
new file mode 100644
index 0000000..b1b7108
--- /dev/null
+++ b/go/cmd-nshd/main.go.in
@@ -0,0 +1,34 @@
+// 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/>.
+
+// Command nshd is an implementation of nslcd that talks to hackers.git instead of LDAP.
+package main
+
+import (
+ "os"
+ hackers_nslcd_backend "parabola_hackers/nslcd_backend"
+
+ nslcd_systemd "lukeshu.com/git/go/libnslcd.git/systemd"
+ "lukeshu.com/git/go/libsystemd.git/sd_daemon/logger"
+)
+
+func main() {
+ logger.Debug("starting")
+ backend := &hackers_nslcd_backend.Hackers{
+ CfgFilename: "@conf_file@",
+ }
+ os.Exit(int(nslcd_systemd.Main(backend)))
+}
diff --git a/go/gopkg.in/yaml.v2 b/go/gopkg.in/yaml.v2
new file mode 160000
+Subproject f7716cbe52baa25d2e9b0d0da546fcf909fc16b
diff --git a/go/lukeshu.com/git/go/libgnulinux.git b/go/lukeshu.com/git/go/libgnulinux.git
new file mode 160000
+Subproject d8c4fd9aef9137b04e4311a1f50024ab88d4c6e
diff --git a/go/lukeshu.com/git/go/libnslcd.git b/go/lukeshu.com/git/go/libnslcd.git
new file mode 160000
+Subproject 132cb9ec42cc4fb6c4a20c49422413ab0a62ef6
diff --git a/go/lukeshu.com/git/go/libsystemd.git b/go/lukeshu.com/git/go/libsystemd.git
new file mode 160000
+Subproject 89efdfbee5f9a22f9dd1083f7a383daba54d4f1
diff --git a/go/parabola_hackers/.gitignore b/go/parabola_hackers/.gitignore
new file mode 100644
index 0000000..3be3f08
--- /dev/null
+++ b/go/parabola_hackers/.gitignore
@@ -0,0 +1,2 @@
+/users.go
+/passwords.go
diff --git a/go/parabola_hackers/nslcd_backend/db_config.go b/go/parabola_hackers/nslcd_backend/db_config.go
new file mode 100644
index 0000000..e78643b
--- /dev/null
+++ b/go/parabola_hackers/nslcd_backend/db_config.go
@@ -0,0 +1,40 @@
+// 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 hackers_nslcd_backend
+
+import (
+ s "syscall"
+
+ p "lukeshu.com/git/go/libnslcd.git/proto"
+)
+
+func (o *Hackers) Config_Get(cred s.Ucred, req p.Request_Config_Get) <-chan p.Config {
+ o.lock.RLock()
+ ret := make(chan p.Config)
+ go func() {
+ defer o.lock.RUnlock()
+ defer close(ret)
+
+ switch req.Key {
+ case p.NSLCD_CONFIG_PAM_PASSWORD_PROHIBIT_MESSAGE:
+ if o.cfg.Pam_password_prohibit_message != "" {
+ ret <- p.Config{Value: o.cfg.Pam_password_prohibit_message}
+ }
+ }
+ }()
+ return ret
+}
diff --git a/go/parabola_hackers/nslcd_backend/db_group.go b/go/parabola_hackers/nslcd_backend/db_group.go
new file mode 100644
index 0000000..18e54b1
--- /dev/null
+++ b/go/parabola_hackers/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 hackers_nslcd_backend
+
+import (
+ "parabola_hackers"
+ s "syscall"
+
+ p "lukeshu.com/git/go/libnslcd.git/proto"
+)
+
+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 = parabola_hackers.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 = parabola_hackers.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
+}
diff --git a/go/parabola_hackers/nslcd_backend/db_pam.go b/go/parabola_hackers/nslcd_backend/db_pam.go
new file mode 100644
index 0000000..3374170
--- /dev/null
+++ b/go/parabola_hackers/nslcd_backend/db_pam.go
@@ -0,0 +1,167 @@
+// 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 hackers_nslcd_backend
+
+import (
+ "fmt"
+ "parabola_hackers"
+ s "syscall"
+
+ "lukeshu.com/git/go/libgnulinux.git/crypt"
+ p "lukeshu.com/git/go/libnslcd.git/proto"
+ "lukeshu.com/git/go/libsystemd.git/sd_daemon/logger"
+)
+
+func checkPassword(password string, hash string) bool {
+ return crypt.Crypt(password, hash) == hash
+}
+
+func hashPassword(newPassword string, oldHash string) string {
+ salt := oldHash
+ if salt == "!" {
+ str, err := parabola_hackers.RandomString(crypt.SaltAlphabet, 8)
+ if err != nil {
+ logger.Err("Could not generate a random string")
+ str = ""
+ }
+ salt = "$6$" + str + "$"
+ }
+ return crypt.Crypt(newPassword, salt)
+}
+
+func (o *Hackers) PAM_Authentication(cred s.Ucred, req p.Request_PAM_Authentication) <-chan p.PAM_Authentication {
+ o.lock.RLock()
+ ret := make(chan p.PAM_Authentication)
+ go func() {
+ defer o.lock.RUnlock()
+ defer close(ret)
+
+ uid := o.name2uid(req.UserName)
+ if uid < 0 {
+ return
+ }
+
+ user := o.users[uid]
+ obj := p.PAM_Authentication{
+ AuthenticationResult: p.NSLCD_PAM_AUTH_ERR,
+ UserName: "",
+ AuthorizationResult: p.NSLCD_PAM_AUTH_ERR,
+ AuthorizationError: "",
+ }
+ if checkPassword(req.Password, user.Passwd.PwHash) {
+ obj.AuthenticationResult = p.NSLCD_PAM_SUCCESS
+ obj.AuthorizationResult = obj.AuthenticationResult
+ obj.UserName = user.Passwd.Name
+ }
+ ret <- obj
+ }()
+ return ret
+}
+
+func (o *Hackers) PAM_Authorization(cred s.Ucred, req p.Request_PAM_Authorization) <-chan p.PAM_Authorization {
+ o.lock.RLock()
+ ret := make(chan p.PAM_Authorization)
+ go func() {
+ defer o.lock.RUnlock()
+ defer close(ret)
+
+ uid := o.name2uid(req.UserName)
+ if uid < 0 {
+ return
+ }
+ ret <- p.PAM_Authorization{
+ Result: p.NSLCD_PAM_SUCCESS,
+ Error: "",
+ }
+ }()
+ return ret
+}
+
+const alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
+
+func (o *Hackers) PAM_SessionOpen(cred s.Ucred, req p.Request_PAM_SessionOpen) <-chan p.PAM_SessionOpen {
+ ret := make(chan p.PAM_SessionOpen)
+ go func() {
+ defer close(ret)
+
+ sessionid, err := parabola_hackers.RandomString(alphabet, 24)
+ if err != nil {
+ return
+ }
+ ret <- p.PAM_SessionOpen{SessionID: sessionid}
+ }()
+ return ret
+}
+
+func (o *Hackers) PAM_SessionClose(cred s.Ucred, req p.Request_PAM_SessionClose) <-chan p.PAM_SessionClose {
+ ret := make(chan p.PAM_SessionClose)
+ go close(ret)
+ return ret
+}
+
+func (o *Hackers) PAM_PwMod(cred s.Ucred, req p.Request_PAM_PwMod) <-chan p.PAM_PwMod {
+ ret := make(chan p.PAM_PwMod)
+ o.lock.Lock()
+ go func() {
+ defer close(ret)
+ defer o.lock.Unlock()
+
+ uid := o.name2uid(req.UserName)
+ if uid < 0 {
+ return
+ }
+ user := o.users[uid]
+
+ // Check the OldPassword
+ if req.AsRoot == 1 {
+ if !checkPassword(req.OldPassword, user.Passwd.PwHash) {
+ ret <- p.PAM_PwMod{
+ Result: p.NSLCD_PAM_PERM_DENIED,
+ Error: fmt.Sprintf("password change failed: %s", "Old password did not match"),
+ }
+ return
+ }
+ }
+
+ // Update the PwHash in memory
+ user.Passwd.PwHash = hashPassword(req.NewPassword, user.Passwd.PwHash)
+ if user.Passwd.PwHash == "" {
+ logger.Err("Password hashing failed")
+ return
+ }
+
+ // Update the PwHash on disk
+ passwords := make(map[string]string, len(o.users))
+ for _, ouser := range o.users {
+ passwords[ouser.Passwd.Name] = ouser.Passwd.PwHash
+ }
+ passwords[user.Passwd.Name] = user.Passwd.PwHash
+ err := parabola_hackers.SaveAllPasswords(passwords)
+ if err != nil {
+ logger.Err("Writing passwords to disk: %v", err)
+ return
+ }
+
+ // Ok, we're done, commit the changes
+ o.users[uid] = user
+ ret <- p.PAM_PwMod{
+ Result: p.NSLCD_PAM_SUCCESS,
+ Error: "",
+ }
+ }()
+ return ret
+}
diff --git a/go/parabola_hackers/nslcd_backend/db_passwd.go b/go/parabola_hackers/nslcd_backend/db_passwd.go
new file mode 100644
index 0000000..3f32ddd
--- /dev/null
+++ b/go/parabola_hackers/nslcd_backend/db_passwd.go
@@ -0,0 +1,82 @@
+// 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 hackers_nslcd_backend
+
+import (
+ s "syscall"
+
+ p "lukeshu.com/git/go/libnslcd.git/proto"
+)
+
+/* Note that the output password hash value should be one of:
+ <empty> - no password set, allow login without password
+ ! - used to prevent logins
+ x - "valid" encrypted password that does not match any valid password
+ often used to indicate that the password is defined elsewhere
+ other - encrypted password, in crypt(3) format */
+
+func (o *Hackers) Passwd_ByName(cred s.Ucred, req p.Request_Passwd_ByName) <-chan p.Passwd {
+ o.lock.RLock()
+ ret := make(chan p.Passwd)
+ go func() {
+ defer o.lock.RUnlock()
+ defer close(ret)
+
+ uid := o.name2uid(req.Name)
+ if uid < 0 {
+ return
+ }
+ passwd := o.users[uid].Passwd
+ passwd.PwHash = "x" // only put actual hashes in the Shadow DB
+ ret <- passwd
+ }()
+ return ret
+}
+
+func (o *Hackers) Passwd_ByUID(cred s.Ucred, req p.Request_Passwd_ByUID) <-chan p.Passwd {
+ o.lock.RLock()
+ ret := make(chan p.Passwd)
+ go func() {
+ defer o.lock.RUnlock()
+ defer close(ret)
+
+ user, found := o.users[req.UID]
+ if !found {
+ return
+ }
+ passwd := user.Passwd
+ passwd.PwHash = "x" // only put actual hashes in the Shadow DB
+ ret <- passwd
+ }()
+ return ret
+}
+
+func (o *Hackers) Passwd_All(cred s.Ucred, req p.Request_Passwd_All) <-chan p.Passwd {
+ o.lock.RLock()
+ ret := make(chan p.Passwd)
+ go func() {
+ defer o.lock.RUnlock()
+ defer close(ret)
+
+ for _, user := range o.users {
+ passwd := user.Passwd
+ passwd.PwHash = "x" // only put actual hashes in the Shadow DB
+ ret <- passwd
+ }
+ }()
+ return ret
+}
diff --git a/go/parabola_hackers/nslcd_backend/db_shadow.go b/go/parabola_hackers/nslcd_backend/db_shadow.go
new file mode 100644
index 0000000..abfff28
--- /dev/null
+++ b/go/parabola_hackers/nslcd_backend/db_shadow.go
@@ -0,0 +1,78 @@
+// 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 hackers_nslcd_backend
+
+import (
+ s "syscall"
+
+ p "lukeshu.com/git/go/libnslcd.git/proto"
+)
+
+func (o *Hackers) Shadow_ByName(cred s.Ucred, req p.Request_Shadow_ByName) <-chan p.Shadow {
+ o.lock.RLock()
+ ret := make(chan p.Shadow)
+ go func() {
+ defer o.lock.RUnlock()
+ defer close(ret)
+
+ if cred.Uid != 0 {
+ return
+ }
+ uid := o.name2uid(req.Name)
+ user := o.users[uid]
+ ret <- p.Shadow{
+ Name: user.Passwd.Name,
+ PwHash: user.Passwd.PwHash,
+ LastChangeDate: -1,
+ MinDays: -1,
+ MaxDays: -1,
+ WarnDays: -1,
+ InactDays: -1,
+ ExpireDate: -1,
+ Flag: -1,
+ }
+ }()
+ return ret
+}
+
+func (o *Hackers) Shadow_All(cred s.Ucred, req p.Request_Shadow_All) <-chan p.Shadow {
+ o.lock.RLock()
+ ret := make(chan p.Shadow)
+ go func() {
+ defer o.lock.RUnlock()
+ defer close(ret)
+
+ if cred.Uid != 0 {
+ return
+ }
+
+ for _, user := range o.users {
+ ret <- p.Shadow{
+ Name: user.Passwd.Name,
+ PwHash: user.Passwd.PwHash,
+ LastChangeDate: -1,
+ MinDays: -1,
+ MaxDays: -1,
+ WarnDays: -1,
+ InactDays: -1,
+ ExpireDate: -1,
+ Flag: -1,
+ }
+ }
+ }()
+ return ret
+}
diff --git a/go/parabola_hackers/nslcd_backend/hackers.go b/go/parabola_hackers/nslcd_backend/hackers.go
new file mode 100644
index 0000000..bb03862
--- /dev/null
+++ b/go/parabola_hackers/nslcd_backend/hackers.go
@@ -0,0 +1,122 @@
+// 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 hackers_nslcd_backend is an nslcd_server Backend that
+// speaks to hackers.git.
+package hackers_nslcd_backend
+
+import (
+ "parabola_hackers"
+ "sync"
+
+ nslcd_server "lukeshu.com/git/go/libnslcd.git/proto/server"
+ nslcd_systemd "lukeshu.com/git/go/libnslcd.git/systemd"
+ "lukeshu.com/git/go/libsystemd.git/sd_daemon/logger"
+)
+
+type config struct {
+ Pam_password_prohibit_message string
+}
+
+type Hackers struct {
+ nslcd_server.NilBackend
+ lock sync.RWMutex
+
+ CfgFilename string
+
+ cfg config
+ users map[int32]parabola_hackers.User
+ groups map[string]map[string]bool
+}
+
+var _ nslcd_systemd.Backend = &Hackers{}
+var _ nslcd_server.Backend = &Hackers{}
+
+func (o *Hackers) Init() error {
+ logger.Debug("hackers.git: CfgFilename = %v", o.CfgFilename)
+ err := o.Reload()
+ if err != nil {
+ logger.Err("hackers.git: Could not initialize: %v", err)
+ return err
+ }
+ return nil
+}
+
+func (o *Hackers) Close() {
+ logger.Info("hackers.git: Closing session")
+ o.lock.Lock()
+ defer o.lock.Unlock()
+
+ o.users = make(map[int32]parabola_hackers.User, 0)
+ o.groups = make(map[string]map[string]bool)
+}
+
+func (o *Hackers) Reload() error {
+ logger.Info("hackers.git: Loading session")
+ o.lock.Lock()
+ defer o.lock.Unlock()
+
+ var err error
+ o.cfg, err = parse_config(o.CfgFilename)
+ if err != nil {
+ return err
+ }
+ logger.Info("hackers.git: pam_password_prohibit_message: %#v", o.cfg.Pam_password_prohibit_message)
+
+ logger.Debug("hackers.git: Parsing user data")
+ o.users, err = parabola_hackers.LoadAllUsers()
+ if err != nil {
+ return err
+ }
+
+ passwords, err := parabola_hackers.LoadAllPasswords()
+ if err != nil {
+ return err
+ }
+
+ o.groups = make(map[string]map[string]bool)
+ for uid, user := range o.users {
+ user.Passwd.GID = usersGid
+ hash, hasHash := passwords[user.Passwd.Name]
+ if !hasHash {
+ hash = "!"
+ }
+ user.Passwd.PwHash = hash
+ o.users[uid] = user
+ for _, groupname := range user.Groups {
+ o.add_user_to_group(user.Passwd.Name, groupname)
+ }
+ }
+ return nil
+}
+
+func (o *Hackers) name2uid(name string) int32 {
+ for uid, data := range o.users {
+ if data.Passwd.Name == name {
+ return uid
+ }
+ }
+ return -1
+}
+
+func (o *Hackers) add_user_to_group(username string, groupname string) {
+ group, found := o.groups[groupname]
+ if !found {
+ group = make(map[string]bool)
+ o.groups[groupname] = group
+ }
+ group[username] = true
+}
diff --git a/go/parabola_hackers/nslcd_backend/util.go b/go/parabola_hackers/nslcd_backend/util.go
new file mode 100644
index 0000000..4fb28f3
--- /dev/null
+++ b/go/parabola_hackers/nslcd_backend/util.go
@@ -0,0 +1,58 @@
+// 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 hackers_nslcd_backend
+
+import (
+ "io/ioutil"
+ "os"
+
+ yaml "gopkg.in/yaml.v2"
+ "lukeshu.com/git/go/libgnulinux.git/getgr"
+)
+
+func name2gid(name string) int32 {
+ gr, err := getgr.ByName(name)
+ if gr == nil || err != nil {
+ return -1
+ } else {
+ return int32(gr.Gid)
+ }
+}
+
+func gid2name(gid int32) (string, bool) {
+ gr, err := getgr.ByGid(gid)
+ if gr == nil || err != nil {
+ return "", false
+ } else {
+ return gr.Name, true
+ }
+}
+
+var usersGid = name2gid("users")
+
+func parse_config(filename string) (cfg config, err error) {
+ file, err := os.Open(filename)
+ if err != nil {
+ return
+ }
+ contents, err := ioutil.ReadAll(file)
+ if err != nil {
+ return
+ }
+ err = yaml.Unmarshal(contents, &cfg)
+ return
+}
diff --git a/go/parabola_hackers/passwords.go.in b/go/parabola_hackers/passwords.go.in
new file mode 100644
index 0000000..b9f93d9
--- /dev/null
+++ b/go/parabola_hackers/passwords.go.in
@@ -0,0 +1,97 @@
+// 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 parabola_hackers
+
+import (
+ "fmt"
+ "io/ioutil"
+ "os"
+ "sort"
+ "strings"
+
+ "lukeshu.com/git/go/libgnulinux.git/crypt"
+ "lukeshu.com/git/go/libsystemd.git/sd_daemon/logger"
+)
+
+/* Note that the password hash value should be one of:
+ <empty> - no password set, allow login without password
+ ! - used to prevent logins
+ x - "valid" encrypted password that does not match any valid password
+ often used to indicate that the password is defined elsewhere
+ other - encrypted password, in crypt(3) format */
+
+const shadow_file = "@shadow_file@"
+
+func LoadAllPasswords() (map[string]string, error) {
+ file, err := os.Open(shadow_file)
+ if err != nil {
+ return nil, err
+ }
+ contents, err := ioutil.ReadAll(file)
+ if err != nil {
+ return nil, err
+ }
+ lines := strings.Split(string(contents), "\n")
+ passwords := make(map[string]string, len(lines))
+ for i, line := range lines {
+ if line == "" {
+ continue
+ }
+ cols := strings.SplitN(line, ":", 2)
+ if len(cols) != 2 {
+ logger.Err("hackers.git %s:%d: malformed line", shadow_file, i+1)
+ continue
+ }
+ username := cols[0]
+ hash := cols[1]
+ if hash != "!" && !crypt.SaltOk(hash) {
+ hash = "!"
+ logger.Err("%s:%d: malformed hash for user: %s", shadow_file, i+1, username)
+ }
+ passwords[username] = hash
+ }
+ return passwords, nil
+}
+
+func SaveAllPasswords(passwords map[string]string) error {
+ usernames := make([]string, len(passwords))
+ i := 0
+ for username, _ := range passwords {
+ usernames[i] = username
+ i++
+ }
+ sort.Strings(usernames)
+
+ file, err := os.OpenFile(shadow_file+"-", os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0600)
+ if err != nil {
+ return err
+ }
+
+ for _, username := range usernames {
+ fmt.Fprintf(file, "%s:%s\n", username, passwords[username])
+ }
+ err = file.Sync()
+ if err != nil {
+ return err
+ }
+ err = file.Close()
+ if err != nil {
+ return err
+ }
+
+ return os.Rename(shadow_file+"-", shadow_file)
+}
diff --git a/go/parabola_hackers/users.go.in b/go/parabola_hackers/users.go.in
new file mode 100644
index 0000000..aeda069
--- /dev/null
+++ b/go/parabola_hackers/users.go.in
@@ -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 parabola_hackers
+
+import (
+ "fmt"
+ "os/exec"
+
+ yaml "gopkg.in/yaml.v2"
+ nslcd_proto "lukeshu.com/git/go/libnslcd.git/proto"
+ "lukeshu.com/git/go/libsystemd.git/sd_daemon/logger"
+)
+
+/* Note that the password hash value should be one of:
+ <empty> - no password set, allow login without password
+ ! - used to prevent logins
+ x - "valid" encrypted password that does not match any valid password
+ often used to indicate that the password is defined elsewhere
+ other - encrypted password, in crypt(3) format */
+
+type User struct {
+ Passwd nslcd_proto.Passwd
+ Groups []string
+}
+
+func LoadAllUsers() (users map[int32]User, err error) {
+ contents, err := exec.Command("@bindir@/meta-cat").Output()
+ if err != nil {
+ return
+ }
+
+ var _data interface{}
+ err = yaml.Unmarshal(contents, &_data)
+ if err != nil {
+ return
+ }
+
+ data, isMap := _data.(map[interface{}]interface{})
+ errs := []string{}
+ if !isMap {
+ errs = append(errs, "root node is not a map")
+ } else {
+ users = make(map[int32]User, len(data))
+ for _uid, _user := range data {
+ uid, isInt := _uid.(int)
+ if !isInt {
+ errs = append(errs, fmt.Sprintf("UID is not an int: %T ( %#v )", _uid, _uid))
+ continue
+ }
+ user, _err := parseUser(_user)
+ if _err != nil {
+ errs = append(errs, fmt.Sprintf("Could not parse data for UID %d: %v", uid, _err))
+ continue
+ }
+ user.Passwd.UID = int32(uid)
+ logger.Debug("hackers.git: -> User %d(%s) parsed", user.Passwd.UID, user.Passwd.Name)
+ users[user.Passwd.UID] = user
+ }
+ }
+ if len(errs) > 0 {
+ users = nil
+ err = &yaml.TypeError{Errors: errs}
+ }
+ return
+}
+
+func parseUser(_data interface{}) (ret User, err error) {
+ data, isMap := _data.(map[interface{}]interface{})
+ errs := []string{}
+ if !isMap {
+ errs = append(errs, "root node is not a map")
+ } else {
+ if iface, isSet := data["username"]; !isSet {
+ errs = append(errs, "\"username\" is not set")
+ } else if str, isTyp := iface.(string); !isTyp {
+ errs = append(errs, "\"username\" is not a string")
+ } else {
+ ret.Passwd.Name = str
+ ret.Passwd.HomeDir = "/home/" + str
+ }
+
+ if iface, isSet := data["fullname"]; !isSet {
+ errs = append(errs, "\"fullname\" is not set")
+ } else if str, isTyp := iface.(string); !isTyp {
+ errs = append(errs, "\"fullname\" is not a string")
+ } else {
+ ret.Passwd.GECOS = str
+ }
+
+ if iface, isSet := data["shell"]; !isSet {
+ errs = append(errs, "\"shell\" is not set")
+ } else if str, isTyp := iface.(string); !isTyp {
+ errs = append(errs, "\"shell\" is not a string")
+ } else {
+ ret.Passwd.Shell = str
+ }
+
+ if iface, isSet := data["groups"]; !isSet {
+ ret.Groups = make([]string, 0)
+ } else if ary, isTyp := iface.([]interface{}); !isTyp {
+ errs = append(errs, "\"groups\" is not an array")
+ } else {
+ groups := make(map[string]bool, len(ary))
+ e := false
+ for _, iface := range ary {
+ if str, isTyp := iface.(string); !isTyp {
+ errs = append(errs, "\"group\" item is not an array")
+ e = true
+ break
+ } else {
+ groups[str] = true
+ }
+ }
+ if !e {
+ ret.Groups = Set2list(groups)
+ }
+ }
+ }
+ if len(errs) > 0 {
+ err = &yaml.TypeError{Errors: errs}
+ }
+
+ ret.Passwd.PwHash = "x" // look in shadow for the password hash
+ ret.Passwd.GID = -1
+
+ return
+}
diff --git a/go/parabola_hackers/util.go b/go/parabola_hackers/util.go
new file mode 100644
index 0000000..9a241db
--- /dev/null
+++ b/go/parabola_hackers/util.go
@@ -0,0 +1,47 @@
+// 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 parabola_hackers
+
+import (
+ "crypto/rand"
+ "math/big"
+)
+
+func RandomString(alphabet string, n uint) (str string, err error) {
+ var alphabet_len = big.NewInt(int64(len(alphabet)))
+ var bigint *big.Int
+ _str := make([]byte, n)
+ for i := 0; i < len(_str); i++ {
+ bigint, err = rand.Int(rand.Reader, alphabet_len)
+ if err != nil {
+ return
+ }
+ _str[i] = alphabet[bigint.Int64()]
+ }
+ str = string(_str[:])
+ return
+}
+
+func Set2list(set map[string]bool) []string {
+ list := make([]string, len(set))
+ i := uint(0)
+ for item, _ := range set {
+ list[i] = item
+ i++
+ }
+ return list
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-11 12:43:45 +0000