255オクテットのドメインはツラみがある! / endless-work

Presented on PHPerKaigi 2019 https://phperkaigi.jp/

longest domain here!
Shorten :
http://bit.ly/endless_work

original :
https://workworkworkworkworkwork.workworkworkworkworkworkworkworkworkwork.workworkworkworkworkworkworkworkworkworkworkworkworkworkwork.workworkworkworkworkworkworkworkworkworkworkworkworkworkwork.workworkworkworkworkworkworkworkworkworkworkworkworkworkwork.work/

Transcript

1. 255จࣈͷ υϝΠϯ͸ πϥΈ͕͋Δ! 2019/03/31(Sun) PHPerKaigi 2019 Jun Watanabe@rela1470
2. 15෼࿮ͳͷʹ εϥΠυ110ຕͳͷͰ ઌʹ·ͱΊ ɾ255จࣈ͡Όͳ͍(͝ΊΜ) ɾ64จࣈҎ্Ͱཁ஫ҙ!!!!
3. υϝΠϯͬͯ ͍ͭͷ·ʹ͔ ૿͑ͯ·͢ΑͶ!
4. Θͨͳ΂͸ 13ݸ΋ͬͯ·ͨ͠
5. New gTLD ଓʑొ৔
7. yasero.dev ࣗ෼ͷମॏΛࡽ͢αΠτ
8. ͱ͍͏͜ͱͰຊ୊…
9. υϝΠϯͬͯ Ͳ͜·Ͱ௕͘Ͱ͖Δ͔ ஌ͬͯ·͔͢?
10. 255จࣈͷ υϝΠϯ͸ πϥΈ͕͋Δ! 2019/03/31(Sun) PHPerKaigi 2019 Jun Watanabe@rela1470
11. workworkworkworkworkwork. workworkworkworkworkworkw orkworkworkwork.workworkwo rkworkworkworkworkworkwork workworkworkworkworkwork. workworkworkworkworkworkw orkworkworkworkworkworkwor kworkwork.workworkworkwork workworkworkworkworkworkw orkworkworkworkwork.work
12. workυϝΠϯ 1ԁͰͨ͠
14. ͋Γ͕ͱ͏ ͍͟͝·͢!
15. (དྷ೥΋͓ئ͍͠·͢)
16. ͋Ε?
17. 255จࣈͷ υϝΠϯ͸ πϥΈ͕͋Δ! 2019/03/31(Sun) PHPerKaigi 2019 Jun Watanabe@rela1470
18. workworkworkworkworkwork. workworkworkworkworkworkw orkworkworkwork.workworkwo rkworkworkworkworkworkwork workworkworkworkworkwork. workworkworkworkworkworkw orkworkworkworkworkworkwor kworkwork.workworkworkwork workworkworkworkworkworkw orkworkworkworkwork.work
19. ͦ͏ͳΜͰ͢
20. 253จࣈ ͔͠ͳ͍ͧ
21. ͓࿳ͼͱగਖ਼
22. 255จࣈͷ υϝΠϯ͸ πϥΈ͕͋Δ! 2019/03/31(Sun) PHPerKaigi 2019 Jun Watanabe@rela1470
23. 255ΦΫςοτͷ υϝΠϯ͸ πϥΈ͕͋Δ! 2019/03/31(Sun) PHPerKaigi 2019 Jun Watanabe@rela1470
25. Ͳ͜Ͱఆٛ͞Ε͍ͯΔ͔
26. RFC1035 2.3.4. Size limits 255 Octet
27. 1 Octet 8 bit 1 Byte
28. ༨ஊ 1Byte = 8 Bit ʹͳͬͨͷ͸ 2008೥ IEC 80000-13
 https://www.iso.org/standard/31898.html JIS͸ະൃߦ IECΛӾཡ͢Δʹ͸158 CHF (17,450ԁ)…
29. ࠞཚ͠ͳ͍ͨΊʹ΋ Octet Λ࢖͓͏!
30. ͞Βʹ༨ஊ URLશମͷ੍ݶ͸ͳ͍
31. 100ສจࣈ·Ͱಈ࡞֬ೝࡁΈ https://qiita.com/nwtgck/items/e83473dc63386d2da3e5
32. ؓ࿩ٳ୊
33. υϝΠϯͷσʔλ಺໿
34. work . work ↓ϥϕϧ ↑ ۠੾Γจࣈ ୈ2ϨϕϧυϝΠϯ ୈ1ϨϕϧυϝΠϯ
35. DNSϝοηʔδ ࠓճͷυϝΠϯͷྫ
36. ఆٛจࣈ௕
    ΦΫςοτ ϥϕϧจࣈྻ
    NBY ΦΫςοτ  XPSLXPSLXPSLXPSLXPSLXPSL  XPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSL  XPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSL  XPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSL  XPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSLXPSL  XPSL  
    0DUFU 
    0DUFU 
    
    
    
     workworkworkworkworkwork.workworkworkworkworkworkworkworkworkwork.workworkworkworkwor kworkworkworkworkworkworkworkworkworkwork.workworkworkworkworkworkworkworkworkworkwor kworkworkworkwork.workworkworkworkworkworkworkworkworkworkworkworkworkworkwork.work ↓ = 255 octet = 253จࣈ(υοτؚ)
37. ϝʔϧΞυϨε͸?
38. RFC5321 4.5.3.1.3. Path 256 Octet
39. શମͰ࠷େ 256 Octet ·Ͱ (υοτ΍ΞοτϚʔΫ΋ؚΉ) υϝΠϯͰ 255 Octet ࢖͏ͷͰ…
40. υϝΠϯ͕࠷େ௕ͩͱ ࣮࣭ൃߦͰ͖ͳ͍ @workworkworkworkworkwork.workworkworkworkwo rkworkworkworkworkwork.workworkworkworkworkw orkworkworkworkworkworkworkworkworkwork.work workworkworkworkworkworkworkworkworkworkwork workworkwork.workworkworkworkworkworkworkwor kworkworkworkworkworkworkwork.work ↑Ͱ256ΦΫςοτ(254จࣈ)
41. ࣮ࡍʹӡ༻͍͖ͯ͠
42. DNS
44. ໊͓લυοτίϜ͞Μ ͦ΋ͦ΋ෳ਺ϥϕϧ͕ ߟྀ͞Εͯͳ͍ ϫΠϧυΧʔυͰͳΜͱ͔
45. SLAର৅ͷαʔϏεΛ ࢖͍·͠ΐ͏
46. Amazon Route 53
47. IDCF Cloud DNS
48. nginx
49. vi nginx.conf ———- server { listen 80; server_name workworkworkworkworkwork.workworkworkworkworkworkworkworkworkwork.workworkwor kworkworkworkworkworkworkworkworkworkworkworkwork.workworkworkworkworkworkwor kworkworkworkworkworkworkworkwork.workworkworkworkworkworkworkworkworkworkwor kworkworkworkwork.work; } —————— nginx -t nginx: [emerg] could not build server_names_hash, you should increase server_names_hash_bucket_size: 32 nginx: configuration file /etc/nginx/nginx.conf test failed nginx.conf server_name͕௕͗͢Δ
50. vi nginx.conf ———- http { server_names_hash_bucket_size 512; } bucketSize֦ு
52. HTTPSԽ
54. DNS name too long # /usr/local/certbot/certbot-auto certonly --webroot -w /work.work - d workworkworkworkworkwork.workworkworkworkworkworkworkworkworkwork.wo rkworkworkworkworkworkworkworkworkworkworkworkworkworkwork.workworkw orkworkworkworkworkworkworkworkworkworkworkworkwork.workworkworkwork workworkworkworkworkworkworkworkworkworkwork.work Saving debug log to /var/log/letsencrypt/letsencrypt.log Plugins selected: Authenticator webroot, Installer None Obtaining a new certificate An unexpected error occurred: The request message was malformed :: Error creating new authz :: DNS name too long Please see the logfiles in /var/log/letsencrypt for more details.
55. certbot͕230จࣈҎ্Λ ड͚෇͚ͳ͍
56. ಺෦తʹJSONͷϝλ৘ใͰ 25จࣈ࢖ͬͯ͠·͏ͨΊ letsencrypt/boulder.git/policy/pa.go@126 // TODO(#3237): Right now our schema for the authz table only allows 255 characters // for identifiers, including JSON wrapping, which takes up 25 characters. For // now, we only allow identifiers up to 230 characters in length. When we are // able to do a migration to update this table, we can allow DNS names up to // 253 characters in length. maxLabelLength = 63 maxDNSIdentifierLength = 230 `identifier` varchar(255) NOT NULL, {"type":"dns","value":"example.com"} https://community.letsencrypt.org/t/i-want-use-max-255-octet-domain/51279
60. Let’s Encrypt ͕ବ໨ͳΒ…
61. ී௨ͷ༗ྉSSLͳΒ ͍͚Μͷ͔
62. # openssl req -new -key key.pem -out key.csr Common Name (eg, fully qualified host name) []:workworkworkworkworkwork.workworkworkworkworkworkworkworkworkwork .workworkworkworkworkworkworkworkworkworkworkworkworkworkwork.workwo rkworkworkworkworkworkworkworkworkworkworkworkworkwork.workworkworkw orkworkworkworkworkworkworkworkworkworkworkwork.work OpenSSLͰCSRൃߦ΍!
63. string is too long, it needs to be less than 64 bytes long
64. OpenSSL͕ବ໨ͳΒ…
65. Microsoft IIS
66. CSRൃߦͰ͖·ͨ͠
67. CoreSSL͞ΜͰਃ੥
69. CSR͸ೝ͚ࣝͨ͠Ͳ αʔϏεଆͰ஄͔Εͨ
70. ্Ґূ໌ہ Symantec Comodo GeoTrust ͷ੍ݶ https://knowledge.symantec.com/jp/support/ssl-certificates-support/index?page=content&actp=CROSSLINK&id=SO24065
71. RFC 5280 Appendix A.1 ub-common-name-length INTEGER ::= 64 ͪΐͬͱࣗ৴ͳ͍
72. ͝ฦۚ ରԠ௖͖ ͋Γ͕ͱ͏ ͍͟͝·ͨ͠
73. ແྉͰ230จࣈ·Ͱ͍͚Δ let's encrypt ٯʹ༏लઆ
75. ࣗલ͕ବ໨ͳΒ...
76. αʔόʔϨε΍!
77. Firebase Hosting ແྉSSL+ແྉCDN(݄50GB·Ͱ)
78. Firebase Hosting ແྉSSL+ແྉCDN(݄50GB·Ͱ)
79. Firebase Hosting ແྉSSL+ແྉCDN(݄50GB·Ͱ)
80. SSL͕͍ͭ·Ͱܦͬͯ΋ ൓ө͞Εͳ͍
81. UI΋յΕΔ
82. ͦͯ͠2019೥
83. υϝΠϯͷ௕͕͞ ࠷େ64จࣈʹ੍ݶ͞ΕͯΔ…
84. Firebase͕ ବ໨ͳΒ Netlify΍!
87. UI͸΋ͪΖΜյΕΔ
88. ͔͠͠ 255 octet ͷ υϝΠϯ͸ొ࿥Ͱ͖ͨ (ͼͬ͘Γ)
89. SSL͸…?
90. DNS name too long
91. Netlify ແྉSSL
92. 230จࣈʹ཈͑ͨΒ ͍͚Δ΍Ζ!
93. CN was longer than 64 bytes
95. Firebase SSLରԠඞਢ 64 octet ·Ͱ Netlify SSL͸ 64 octet ·Ͱ httpͰ΋Α͚Ε͹ 255 octet ·Ͱ
96. SSLରԠͷເ͸௵͑ͨ…
98. ACME v2 API ϫΠϧυΧʔυূ໌ॻ
99. CN was longer than 64 bytes ./certbot-auto certonly —manual -d *.workworkworkworkworkworkworkworkworkwork.workworkworkworkworkworkw orkworkworkworkworkworkworkworkwork.workworkworkworkworkworkworkwork workworkworkworkworkworkwork.workworkworkworkworkworkworkworkworkwor kworkworkworkworkwork.work -m jun@harine.jp --agree-tos --manual- public-ip --preferred-challenges dns-01 --server https://acme- v02.api.letsencrypt.org/directory An unexpected error occurred: The request message was malformed :: Error finalizing order :: issuing precertificate: CN was longer than 64 bytes
100. cert-bot SAN ରԠ υϝΠϯෳ਺ࢦఆͰ͖Δ & ઌ಄ͷυϝΠϯ͕CNʹ
101. workworkworkworkworkw orkworkworkworkworkwor kworkworkworkwork.work 65จࣈ
102. workworkworkworkwork. work 25จࣈ
103. ./certbot-auto certonly --manual -d workworkworkworkwork.work -d *.workworkworkworkworkworkworkworkworkwork.workworkworkworkworkworkw orkworkworkworkworkworkworkworkwork.workworkworkworkworkworkworkwork workworkworkworkworkworkwork.workworkworkworkworkworkworkworkworkwor kworkworkworkworkwork.work -m jun@harine.jp --agree-tos --manual- public-ip --preferred-challenges dns-01 --server https://acme- v02.api.letsencrypt.org/directory
104. Congratulations! ./certbot-auto certonly --manual -d workworkworkworkwork.work -d *.workworkworkworkworkworkworkworkworkwork.workworkworkworkworkworkw orkworkworkworkworkworkworkworkwork.workworkworkworkworkworkworkwork workworkworkworkworkworkwork.workworkworkworkworkworkworkworkworkwor kworkworkworkworkwork.work -m jun@harine.jp --agree-tos --manual- public-ip --preferred-challenges dns-01 --server https://acme- v02.api.letsencrypt.org/directory IMPORTANT NOTES: - Congratulations! Your certificate and chain have been saved at: /etc/letsencrypt/live/workworkworkworkwork.work/fullchain.pem
107. https:// workworkworkworkworkwork.w orkworkworkworkworkworkwor kworkworkwork.workworkwork workworkworkworkworkworkw orkworkworkworkworkwork.wo rkworkworkworkworkworkwork workworkworkworkworkworkw orkwork.workworkworkworkwo rkworkworkworkworkworkwork workworkworkwork.work/
108. http:// work.workworkworkworkworkw orkworkworkworkworkworkwor kworkworkwork.workworkwork workworkworkworkworkworkw orkworkworkworkworkwork.wo rkworkworkworkworkworkwork workworkworkworkworkworkw orkwork.workworkworkworkwo rkworkworkworkworkworkwork workworkworkwork.work/
109. http:// workwork.workworkworkworkw orkworkworkworkworkworkwor kworkworkwork.workworkwork workworkworkworkworkworkw orkworkworkworkworkwork.wor kworkworkworkworkworkwork workworkworkworkworkworkw orkwork.workworkworkworkwor kworkworkworkworkworkwork workworkworkwork.work/public
110. http://bit.ly/endless_work http://bit.ly/work_netlify http://bit.ly/work_githubpages Jun Watanabe@rela1470 https://rela.red/ https://yasero.dev/ Available for hire!