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GeezerVison is showing github.com — plug/ldap.go at master · ComputerScienceHouse/plug

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ldap.go

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ldap.go

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package main
import (
"crypto/tls"
"fmt"
log "github.com/sirupsen/logrus"
"gopkg.in/ldap.v2"
"strconv"
)
type LDAPConnection struct {
app *PlugApplication
con *ldap.Conn
host string
bind_dn string
bind_pw string
}
func (c *LDAPConnection) Init(
app *PlugApplication,
host,
bind_dn,
bind_pw string) {
c.app = app
c.host = host
c.bind_dn = bind_dn
c.bind_pw = bind_pw
c.reconnectToLDAP()
}
func (c *LDAPConnection) reconnectToLDAP() {
lcon, err := ldap.DialTLS("tcp", c.host,
&tls.Config{ServerName: "ldap.csh.rit.edu"})
if err != nil {
c.app.db.AddLog(0, "ldap connection error: "+err.Error())
log.Fatal(err)
}
err = lcon.Bind(c.bind_dn, c.bind_pw)
if err != nil {
c.app.db.AddLog(0, "ldap bind error: "+err.Error())
log.Fatal(err)
}
c.con = lcon
}
func (c LDAPConnection) pingLDAPAlive() {
searchReq := ldap.NewSearchRequest(
"dc=csh,dc=rit,dc=edu",
ldap.ScopeBaseObject, ldap.NeverDerefAliases, 0, 0, false,
"(objectClass=top)",
[]string{"dn"},
nil,
)
_, err := c.con.Search(searchReq)
if err != nil {
c.reconnectToLDAP()
}
}
func (c LDAPConnection) CheckIfAdmin(username string) bool {
c.pingLDAPAlive()
searchRequest := ldap.NewSearchRequest(
"cn=users,cn=accounts,dc=csh,dc=rit,dc=edu",
ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false,
"(&(|(memberof=cn=drink,cn=groups,cn=accounts,dc=csh,dc=rit,dc=edu)(memberof=cn=rtp,cn=groups,cn=accounts,dc=csh,dc=rit,dc=edu)(memberof=cn=eboard,cn=groups,cn=accounts,dc=csh,dc=rit,dc=edu))(uid="+username+"))",
[]string{"uid"},
nil,
)
sr, err := c.con.Search(searchRequest)
if err != nil {
c.app.db.AddLog(0, "ldap search error: "+err.Error())
log.Fatal(err)
return false
}
return len(sr.Entries) > 0
}
func (c LDAPConnection) CheckIfIntroMember(username string) bool {
c.pingLDAPAlive()
searchRequest := ldap.NewSearchRequest(
"cn=users,cn=accounts,dc=csh,dc=rit,dc=edu",
ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false,
"(&(memberof=cn=intromembers,cn=groups,cn=accounts,dc=csh,dc=rit,dc=edu)(uid="+username+"))",
[]string{"uid"},
nil,
)
sr, err := c.con.Search(searchRequest)
if err != nil {
c.app.db.AddLog(0, "ldap search error: "+err.Error())
log.Fatal(err)
return false
}
return len(sr.Entries) > 0
}
func (c LDAPConnection) CheckCredits(username string) int {
c.pingLDAPAlive()
searchRequest := ldap.NewSearchRequest(
"uid="+username+",cn=users,cn=accounts,dc=csh,dc=rit,dc=edu",
ldap.ScopeBaseObject, ldap.NeverDerefAliases, 0, 0, false,
"(objectClass=*)",
[]string{"drinkBalance"},
nil,
)
sr, err := c.con.Search(searchRequest)
if err != nil {
c.app.db.AddLog(0, "ldap search error: "+err.Error())
log.Fatal(err)
}
balance, err := strconv.Atoi(sr.Entries[0].GetAttributeValue("drinkBalance"))
if err != nil {
c.app.db.AddLog(0, "ldap result parse error: "+err.Error())
log.Fatal(err)
}
log.Info("current balance for %s is %d", username, balance)
return balance
}
func (c LDAPConnection) HasEnoughCredits(username string, credits int) bool {
balance := c.CheckCredits(username)
return balance >= credits
}
func (c LDAPConnection) DecrementCredits(username string, credits int) bool {
balance := c.CheckCredits(username)
newBalance := balance - credits
if newBalance < 0 {
log.Info("Insufficient Credits! %d", balance)
return false
}
modifyRequest := ldap.NewModifyRequest("uid=" + username + ",cn=users,cn=accounts,dc=csh,dc=rit,dc=edu")
modifyRequest.Replace("drinkBalance", []string{fmt.Sprintf("%d", newBalance)})
err := c.con.Modify(modifyRequest)
if err != nil {
c.app.db.AddLog(0, "ldap modification error: "+err.Error())
log.Fatal(err)
}
log.Info("current balance for %s is %d", username, newBalance)
return true
}
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