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php - TLS 协商失败：ldap_connect 与默认端口以外的端口

问题描述

在客户端上运行 centos 6

在服务器上运行 centos 7

开放LDAP 2.4.44

php 5.3

证书是自签名的

php 程序在更改默认端口和设置 TLS 之前工作

php程序

    $username = "uid=" . $userLogin . ",ou=Users,dc=XX,dc=XXX,dc=edu";

    $ldap_host = "XXX.XX.XXX.edu";
    $ldap_port = "1636";
    $ldap_dn = "dc=XX,dc=XXX,dc=edu";

    $filter = "(uid=".$userLogin.")";

    // limit attributes we want to look for
    $attr = array("uid","cn","givenName","sn","mail");
    // turn on debugging before you open a connection
    ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, 7);

    $ldap = @ldap_connect($ldap_host, $ldap_port) or die("Could not connect to $ldap_host");

ldap 服务器上的错误

 slapd[11651]: conn=1001 fd=12 closed (TLS negotiation failure)

客户端上的 error_log

ldap_create
ldap_bind_s
ldap_simple_bind_s
ldap_sasl_bind_s
ldap_sasl_bind
ldap_send_initial_request
ldap_new_connection 1 1 0
ldap_int_open_connection
ldap_connect_to_host: TCP XX.XX.XXX.edu:1636
ldap_new_socket: 21
ldap_prepare_socket: 21
ldap_connect_to_host: Trying XXX.XXX.XX.XXX:1636
ldap_pvt_connect: fd: 21 tm: -1 async: 0
attempting to connect: 
connect success
ldap_open_defconn: successful
ldap_send_server_request
ldap_result ld 0x7f1b0c78f6b0 msgid 1
wait4msg ld 0x7f1b0c78f6b0 msgid 1 (infinite timeout)
wait4msg continue ld 0x7f1b0c78f6b0 msgid 1 all 1
** ld 0x7f1b0c78f6b0 Connections:
* host: XXX.XX.XXX.edu  port: 1636  (default)
refcnt: 2  status: Connected
last used: Wed Jul 11 11:46:03 2018


** ld 0x7f1b0c78f6b0 Outstanding Requests:
* msgid 1,  origid 1, status InProgress
outstanding referrals 0, parent count 0
ld 0x7f1b0c78f6b0 request count 1 (abandoned 0)
** ld 0x7f1b0c78f6b0 Response Queue:
Empty
ld 0x7f1b0c78f6b0 response count 0
ldap_chkResponseList ld 0x7f1b0c78f6b0 msgid 1 all 1
ldap_chkResponseList returns ld 0x7f1b0c78f6b0 NULL
ldap_int_select
read1msg: ld 0x7f1b0c78f6b0 msgid 1 all 1
ldap_err2string
ldap_free_request (origid 1, msgid 1)
ldap_free_connection 1 1
ldap_free_connection: actually freed

消息登录客户端 httpd：登录失败：绑定错误#012请重试。

服务器上的 ldap.conf 文件

# LDAP Defaults
#

# See ldap.conf(5) for details
# This file should be world readable but not world writable.

#BASE   dc=example,dc=com
#URI    ldap://ldap.example.com ldap://ldap-master.example.com:666

URI ldaps://XXX.XX.XX.edu:1636
BASE dc=XX,dc=XXX,dc=edu

#SIZELIMIT      12
#TIMELIMIT      15
#DEREF          never

# start TLS
SSL ON

TLS_CACERTDIR   /etc/openldap/certs
TLSCertificateFile /etc/openldap/certs/paldapcert.pem
TLSCertificateKeyFile /etc/openldap/certs/paldapkey.pem

TLSVerifyClient allow

# Turning this off breaks GSSAPI used with krb5 when rdns = false
#SASL_NOCANON   on

客户端上的 ldap.conf

# LDAP Defaults
#

# See ldap.conf(5) for details
# This file should be world readable but not world writable.

#BASE   dc=example,dc=com
#URI    ldap://ldap.example.com ldap://ldap-master.example.com:666

#SIZELIMIT      12
#TIMELIMIT      15
#DEREF          never

TLS_CACERTDIR /etc/openldap/certs
TLS_CERT /etc/openldap/certs/paldapcert.pem
TLS_KEY /etc/openldap/certs/paldapkey.pem
URI ldaps://XXX.XX.XXX.edu:1636
BASE dc=XX,dc=XXX,dc=edu

#start TLS
SSL ON
TLS_REQCERT allow
#TLS_CACERTDIR /etc/openldap/cacerts

密码

/etc/openldap/certs

在服务器上

-rw-r--r--. 1 ldap ldap 1472 Mar 16 10:36 paldapcert.pem
-rw-r--r--. 1 ldap ldap 1704 Mar 16 10:36 paldapkey.pem

在客户端

-rw-r--r--. 1 root root 65536 Aug 11  2014 cert8.db
-rw-r--r--. 1 root root 16384 Aug 11  2014 key3.db
-rw-r--r--. 1 root root  1472 Jul  6 11:05 paldapcert.pem
-rw-r--r--. 1 root root  1704 Jul  6 11:05 paldapkey.pem
-r--------. 1 root root    45 Aug 11  2014 password
-rw-r--r--. 1 root root 16384 Aug 11  2014 secmod.db

猫证书.ldif

dn: cn=config
changetype: modify
replace: olcTLSCertificateFile
olcTLSCertificateFile: /etc/openldap/certs/paldapcert.pem

dn: cn=config
changetype: modify
replace: olcTLSCertificateKeyFile
olcTLSCertificateKeyFile: /etc/openldap/certs/paldapkey.pem

猫 /etc/sysconfig/slapd

# OpenLDAP server configuration
# see 'man slapd' for additional information

# Where the server will run (-h option)
# - ldapi:/// is required for on-the-fly configuration using client tools
#   (use SASL with EXTERNAL mechanism for authentication)
# - default: ldapi:/// ldap:///
# - example: ldapi:/// ldap://127.0.0.1/ ldap://10.0.0.1:1389/ ldaps:///
# - SLAPD_URLS="ldapi:/// ldap://127.0.0.1/ 
ldap://XXX.XXX.XXX.XXX:1389/ ldaps://XXX.XXX.XXX.XXX:1636/"
SLAPD_URLS="ldapi:/// ldap:/// ldaps://XXX.XXX.XXX.XXX:1636/"

# Any custom options
#SLAPD_OPTIONS=""

# Keytab location for GSSAPI Kerberos authentication
#KRB5_KTNAME="FILE:/etc/openldap/ldap.keytab"

网络统计-antup | grep -i 1636 tcp 0 0 XXX.XXX.XX.XXX:1636 0.0.0.0:*
LISTEN 11651/slapd

在客户端：

/etc/nslcd.conf

tls_reqcert allow
uid nslcd
gid ldap
# This comment prevents repeated auto-migration of settings.
uri ldaps://XXX.XX.XX.XX:1636
base dc=XX,dc=XXX,dc=edu
ssl yes
tls_cacertdir /etc/openldap/certs

ldapsearch -p 1636 -D "cn=ldapadmin,dc=XX,dc=XXX,dc=edu" -W -h ldaps://XXX.XX.XXX.edu -b "dc=XX,dc=XX,dc =edu" -s sub "cn=砖块 *"

来自客户端的 ldapsearch 工作

还在客户端上运行 openssl 以测试连接

openssl s_client -connect xxx.xx.xxx.edu:1636 -servername xxx.xx.xxx.edu -showcerts |openssl x509 -text -noout

verify error:num=18:self signed certificate verify return:1 没有看到任何错误，除了这个关于自签名证书的注释

预先感谢您的任何帮助。

标签： phpcentosldaptls1.2openldap

解决方案

现在不鼓励使用ldap_connectwith两个参数。它只能创建一个未加密的 LDAP 连接到给定的服务器$host和在给定的端口上$port。

现在，您应该使用包含方案（ldap或ldaps）、服务器和可选端口的 LDAP-URI（如果它不是方案的默认端口）。然后忽略第二个参数。

所以在我们的例子中，你应该使用这样的东西：

$ldap_uri = "ldap://XXX.XX.XXX.edu:1636";

$ldap = @ldap_connect($ldap_uri);

另请注意文档中有关返回值的信息：

当使用 OpenLDAP 2.xx 时，ldap_connect() 将始终返回一个资源，因为它实际上并不连接，而只是初始化连接参数。实际连接发生在下一次调用 ldap_* 函数时，通常使用 ldap_bind()

答案扩展了我有用的问题；-)

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