regex101: LDAP (R)DN url check v0.1

Pro

^start of line

(?i)applies the following effective flags to the remainder of the pattern: gmi

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Group 1(((ldap|ldap):\/\/){0,1})

Group 2((ldap|ldap):\/\/){0,1}

{0,1}repeats the group contents below at most once:

Group 3(ldap|ldap)

1st Alternativeldap

ldapthe literal text ldap (case insensitive)

2nd Alternativeldap

ldapthe literal text ldap (case insensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 4((?i)(ou|cn)=(([a-zA-Z0-9]|[-]|[_])){1,63},)+

+repeats the group contents below at least once:

(?i)applies the following effective flags to the remainder of the pattern: gmi

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Group 5(ou|cn)

1st Alternativeou

outhe literal text ou (case insensitive)

2nd Alternativecn

cnthe literal text cn (case insensitive)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

Group 6(([a-zA-Z0-9]|[-]|[_])){1,63}

{1,63}repeats the group contents below between 1 and 63 times:

Group 7([a-zA-Z0-9]|[-]|[_])

1st Alternative[a-zA-Z0-9]

Character Class[a-zA-Z0-9]

a-zone character from a (97₁₀) to z (122₁₀) (case insensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case insensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

2nd Alternative[-]

Character Class[-]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

3rd Alternative[_]

Character Class[_]

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Group 8((?i)(dc=)(([a-zA-Z0-9]|[-]|[_])){1,63},){1,2}

{1,2}repeats the group contents below between 1 and 2 times:

(?i)applies the following effective flags to the remainder of the pattern: gmi

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Group 9(dc=)

dc=the literal text dc= (case insensitive)

Group 10(([a-zA-Z0-9]|[-]|[_])){1,63}

{1,63}repeats the group contents below between 1 and 63 times:

Group 11([a-zA-Z0-9]|[-]|[_])

1st Alternative[a-zA-Z0-9]

Character Class[a-zA-Z0-9]

2nd Alternative[-]

3rd Alternative[_]

,the literal , (44₁₀ / 54₈ / 2C₁₆)

(?i)applies the following effective flags to the remainder of the pattern: gmi

Group 12(dc=)

Group 13(([a-zA-Z0-9]){2,63})

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

25 tokens

Regular Expression

^(?i)(((ldap|ldap):\/\/){0,1})((?i)(ou|cn)=(([a-zA-Z0-9]|[-]|[_])){1,63},)+((?i)(dc=)(([a-zA-Z0-9]|[-]|[_])){1,63},){1,2}(?i)(dc=)(([a-zA-Z0-9]){2,63})$

New

CN=users,DC=example,DC=com
OU=mailgroups,OU=People,OU=organisation,DC=example,DC=at
LDAP://OU=mailgroups,OU=People,OU=organisation,DC=example,DC=at