/
permissions.go
228 lines (178 loc) · 5.14 KB
/
permissions.go
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package permissions
import (
"os"
"strings"
"github.com/BurntSushi/toml"
"github.com/falsechicken/glogger"
)
var permsTable PermsTable
var groupsTable GroupsTable
type User struct {
JID string
Groups []string
Permissions []string
}
type PermGroup struct {
Name string
Permissions []string
}
type PermsTable struct {
Users []User
}
type GroupsTable struct {
Groups []PermGroup
}
func init() {
permsTable := new(PermsTable)
permsTable.Users = make([]User, 2, 10)
}
// HasPermission returns true if a jid has the provided permission.
func HasPermission(jid string, permission string) bool {
jid = strings.Split(jid, "/")[0]
glogger.LogMessage(glogger.Debug, "Checking permission "+permission+" for user "+jid)
if exists, user := getUser(jid); exists {
for _, p := range user.Permissions {
if p == permission {
return true
}
}
_, g := GetGroups(jid)
for _, gN := range g {
if checkGroupPerms(gN, permission) {
return true
}
}
}
return false
}
//IsGroupMember returns true is a user is in the provided group. Will also return false if the group does not exist.
func IsGroupMember(jid string, group string) bool {
jid = strings.Split(jid, "/")[0]
if exists, groups := GetGroups(jid); exists {
for _, g := range groups {
if g == group {
return true
}
}
}
return false
}
func GetGroups(jid string) (bool, []string) {
exists, user := getUser(jid)
if exists {
g := make([]string, len(user.Groups))
copy(g, user.Groups)
return true, g
}
return false, make([]string, 1)
}
func getUser(jid string) (bool, User) {
for i, u := range permsTable.Users {
if u.JID == jid {
return true, permsTable.Users[i]
}
}
return false, *new(User)
}
func GrantPermission(jid string, permission string) {
}
func RevokePermission(jid string, permission string) {
}
func Load(path string) bool {
if _, err := os.Stat(path + "/perms.toml"); err == nil {
if _, err := toml.DecodeFile(path+"/perms.toml", &permsTable); err != nil {
glogger.LogMessage(glogger.Error, err.Error())
os.Exit(2)
}
} else {
generateDefaultConfig(path)
Load(path)
}
if _, err := os.Stat(path + "/groups.toml"); err == nil {
if _, err := toml.DecodeFile(path+"/groups.toml", &groupsTable); err != nil {
glogger.LogMessage(glogger.Error, err.Error())
os.Exit(2)
}
} else {
generateDefaultGroups(path)
Load(path)
}
return true
}
func Save(path string) bool {
perms, err := os.Create(path)
if err != nil {
glogger.LogMessage(glogger.Error, "Cannot create permissions file!: "+path)
panic(err)
}
defer perms.Close()
encoder := toml.NewEncoder(perms)
encoder.Encode(permsTable)
return true
}
func generateDefaultConfig(path string) bool {
glogger.LogMessage(glogger.Info, "Generating default permissions file...")
var defaultPerms = new(PermsTable)
defaultPerms.Users = make([]User, 2)
defaultPerms.Users = append(defaultPerms.Users, *new(User), *new(User))
defaultPerms.Users[0].JID = "user@example.net"
defaultPerms.Users[0].Groups = make([]string, 2)
defaultPerms.Users[0].Groups[0] = "admin"
defaultPerms.Users[0].Groups[1] = "default"
defaultPerms.Users[0].Permissions = make([]string, 2)
defaultPerms.Users[0].Permissions[0] = "status"
defaultPerms.Users[0].Permissions[1] = "test"
defaultPerms.Users[1].JID = "user2@example2.net"
defaultPerms.Users[1].Groups = make([]string, 2)
defaultPerms.Users[1].Groups[0] = "user"
defaultPerms.Users[1].Groups[1] = "default"
defaultPerms.Users[1].Permissions = make([]string, 2)
defaultPerms.Users[1].Permissions[0] = "exampleCmd"
defaultPerms.Users[1].Permissions[1] = "superAbility"
perms, err := os.Create(path + "/perms.toml")
if err != nil {
glogger.LogMessage(glogger.Error, "Cannot create permissions file!: "+path+"/perms.toml")
panic(err)
}
defer perms.Close()
encoder := toml.NewEncoder(perms)
encoder.Encode(defaultPerms)
return true
}
func generateDefaultGroups(path string) bool {
glogger.LogMessage(glogger.Info, "Generating default groups file...")
var defaultGroups = new(GroupsTable)
defaultGroups.Groups = make([]PermGroup, 1)
defaultGroups.Groups = append(defaultGroups.Groups, *new(PermGroup), *new(PermGroup))
defaultGroups.Groups[0].Name = "default"
defaultGroups.Groups[0].Permissions = make([]string, 2)
defaultGroups.Groups[0].Permissions[0] = "talk"
defaultGroups.Groups[0].Permissions[1] = "status"
defaultGroups.Groups[1].Name = "user"
defaultGroups.Groups[1].Permissions = make([]string, 3)
defaultGroups.Groups[1].Permissions[0] = "shout"
defaultGroups.Groups[1].Permissions[1] = "move"
defaultGroups.Groups[1].Permissions[2] = "poke"
defGrps, err := os.Create(path + "/groups.toml")
if err != nil {
glogger.LogMessage(glogger.Error, "Cannot create groups file!: "+path+"/groups.toml")
panic(err)
}
encoder := toml.NewEncoder(defGrps)
encoder.Encode(defaultGroups)
return true
}
//checkGroupPerms returns true if the group contains the provided permission.
func checkGroupPerms(group string, perm string) bool {
for _, g := range groupsTable.Groups {
if g.Name == group {
for _, p := range g.Permissions {
if p == perm {
return true
}
}
return false
}
}
return false
}