Lecture Sheets / changeset

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     1.2 +++ b/ldapint/whatisldap.txt	Sat Jul 09 18:00:08 2011 +0200
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     1.4 +LDAP integration, 15 minute presentation
     1.5 +Lightweight Directory Access Protocol
     1.6 +Audience: Network and software engineers
     1.7 +
     1.8 +Author and speaker
     1.9 +------------------
    1.10 +Michael Schloh von Bennewitz, Europalab Networks
    1.11 +web: http://michael.schloh.com/
    1.12 +email: michael@schloh.com
    1.13 +isdn: +49(89)44239885
    1.14 +voip: sips:michael@schloh.com
    1.15 +
    1.16 +What is LDAP?
    1.17 +-------------
    1.18 +IP technology providing fast directory read access.    +-------------------+
    1.19 +Part of most (if not all) Unix and Linux distros.      | ISO Model   LDAP  |
    1.20 +Good integration in Blackberry, Android, and IPhone.   |   Transport TCP   |
    1.21 +Standardized by the IETF in RFC 4510 and many others.  +-------------------+
    1.22 +
    1.23 +Typical use cases
    1.24 +-----------------
    1.25 +1) Telephone directory.
    1.26 +2) Corporate address book.
    1.27 +3) Employee ID card directory.
    1.28 +4) Password directory.
    1.29 +5) Recipe collection?
    1.30 +X) Utility crosses boundary of SQL technology.
    1.31 +
    1.32 +Comparing LDAP with SQL
    1.33 +-----------------------
    1.34 +LPAP is a protocol, SQL is a language.
    1.35 +Tuned for reading, tuned for balanced use.
    1.36 +SQL provides transactions, consistency, LDAP doesn't.
    1.37 +
    1.38 +LDAP and SQL round trip comparison (UML sequence diagrams)
    1.39 +----------------------------------------------------------
    1.40 +LDAP client binds to a LDAP server and stores the connection.
    1.41 +client uses the LDAP connection to send queries to the server.
    1.42 +The server searches a LDAP directory for the specified attributes.
    1.43 +The server replies with the matched attributes along with values.
    1.44 +
    1.45 +LDAP Mainstream acceptance
    1.46 +--------------------------
    1.47 +Most are enterprise use cases
    1.48 +1) Suse makes widespred use of LDAP
    1.49 +2) MS Active Directory based on LDAP
    1.50 +3) Apple ease of use LDAP in Addressbook
    1.51 +4) Email address autocompletion
    1.52 +     Kontact, Evolution, Thunderbird, iMail, Outlook
    1.53 +5) IP hardphones and softphones (Nokia is missing)
    1.54 +     Snom, Polycom, Cisco, Ekiga, SFLPhone
    1.55 +
    1.56 +LDAP Popular implementations
    1.57 +----------------------------
    1.58 +OpenLDAP (GPLv2)
    1.59 +Mozilla C/Java
    1.60 +Alcatel-Lucent
    1.61 +Alot of others
    1.62 +
    1.63 +------------------------ Technical chapter ------------------------
    1.64 +
    1.65 +OpenLDAP Helloworld
    1.66 +-------------------
    1.67 +int main(int argc, char *argv[]) {
    1.68 +    ldap_initialize(&ld, "ldaps://name.host.com:636/");
    1.69 +    ldap_simple_bind_s(ld, "uid=username,ou=people,dc=host,dc=com", "mypasswordhere");
    1.70 +    ldap_search_s(ld, "dc=intern,dc=host,dc=com", LDAP_SCOPE_SUBTREE, "(sn=Chambe-Eng)", NULL, 0, &result);
    1.71 +    dn = ldap_get_dn(ld, ldap_first_entry(ld, result));
    1.72 +    printf("dn: %s\n", dn);
    1.73 +    ldap_memfree(dn);
    1.74 +    ldap_msgfree(result);
    1.75 +    ldap_unbind(ld);
    1.76 +}
    1.77 +
    1.78 +$ cc -c helloldap.c && cc helloldap.o -lldap -llber && ./a.out
    1.79 +dn: uid=Chambe-Eng,ou=scandinavia,ou=people,dc=intern,dc=host,dc=com
    1.80 +
    1.81 +Typical LDAP attrbutes in an addressbook
    1.82 +----------------------------------------
    1.83 +  Dn (Distinguished name)
    1.84 +  Cn (common name)
    1.85 +  Uid
    1.86 +  Givenname
    1.87 +  Surname
    1.88 +  Displayname
    1.89 +  ...
    1.90 +
    1.91 +LDAP Glossary
    1.92 +-------------
    1.93 +Directory ~= SQL database
    1.94 +Attribute ~= SQL column
    1.95 +Value ~= SQL value
    1.96 +Distinguished name (DN) = The fixed primary key of any directory entry
    1.97 +Root distinguished name (Root DN)
    1.98 +Schema
    1.99 +BER = Basic Encoding Rules (like ASN.1)
   1.100 +Ldap.conf (Client part)
   1.101 +Slapd.conf (Server part)
   1.102 +SLAPd (OpenLDAP Server)
   1.103 +
   1.104 +Links
   1.105 +-----
   1.106 +This presentation
   1.107 +Wikipedia
   1.108 +IETF RFCs
   1.109 +OpenLDAP
   1.110 +
   1.111 +------------------------ Nokia Qt specific ------------------------
   1.112 +
   1.113 +Assumptions
   1.114 +-----------
   1.115 +Class called QLdap (QSql), QLdapconnection (QSqlDatabase), ...
   1.116 +
   1.117 +Problems
   1.118 +--------
   1.119 +In which Qt<Libname> module do the LDAP classes belong?
   1.120 +  1) In their own module.
   1.121 +  2) In libQtSQL.