nanog mailing list archives
Re: Programmers with network engineering skills
From: Owen DeLong <owen () delong com>
Date: Mon, 12 Mar 2012 14:32:23 -0700
On Mar 12, 2012, at 2:12 PM, Keegan Holley wrote:
2012/3/12 Tei <oscar.vives () gmail com>On 12 March 2012 09:59, Carlos Martinez-Cagnazzo <carlosm3011 () gmail com> wrote:Hey! On 3/8/12 8:24 PM, Lamar Owen wrote:On Monday, March 05, 2012 09:36:41 PM Jimmy Hess wrote: ...(16) The default gateway's IP address is always 192.168.0.1 (17) The user portion of E-mail addresses never contain special characters like "-" "+" "$" "~" "." ",", "[", "]"I've just had my ' xx AT cagnazzo.name' email address rejected by a web form saying that 'it is not a valid email address'. So I guess point (17) can be extended to say that 'no email address shall end in anything different that .com, .net or the local ccTLD' :=) CarlosYea, I don't even know how programmers can get that wrong. The regex is not even hard or anything. (?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])I bet it's even harder without the use of a search engine.
Whenever I've built code to check someone's email address on a form, I always just looked for the following: 1. matches ^[^@]+@[A-Za-z0-0\-\.]+[A-Za-z]$ 2. The component to the right of the @ sign returns at least one A, AAAA, or MX record. If it passed those two checks, I figured that was about as good as I could do without resorting to one of the following: 1. An incomprehensible and unmaintainable regex as the one above 2. Actually attempting delivery to said address Owen
Current thread:
- Re: Programmers with network engineering skills, (continued)
- Re: Programmers with network engineering skills Jimmy Hess (Mar 05)
- Re: Programmers with network engineering skills Alain Hebert (Mar 05)
- Re: Programmers with network engineering skills Randy (Mar 05)
- Re: Programmers with network engineering skills Mark Andrews (Mar 05)
- Re: Programmers with network engineering skills Jeroen van Aart (Mar 06)
- Re: Programmers with network engineering skills Lamar Owen (Mar 08)
- Re: Programmers with network engineering skills William Herrin (Mar 08)
- Re: Programmers with network engineering skills Carlos Martinez-Cagnazzo (Mar 12)
- Re: Programmers with network engineering skills Tei (Mar 12)
- Re: Programmers with network engineering skills Keegan Holley (Mar 12)
- Re: Programmers with network engineering skills Owen DeLong (Mar 12)
- Re: Programmers with network engineering skills Michael Thomas (Mar 12)
- Re: Programmers with network engineering skills William Herrin (Mar 12)
- Re: Programmers with network engineering skills Owen DeLong (Mar 12)
- Re: Programmers with network engineering skills Jeroen van Aart (Mar 12)
- Re: Programmers with network engineering skills Owen DeLong (Mar 12)
- Re: Programmers with network engineering skills Joe Greco (Mar 12)
- Re: Programmers with network engineering skills Mark Andrews (Mar 12)
- Re: Programmers with network engineering skills Joe Greco (Mar 13)
- Re: Programmers with network engineering skills Jimmy Hess (Mar 16)
- Re: Programmers with network engineering skills Jeroen van Aart (Mar 12)