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Fix the dname_str method to cause conversion errors when the domain name length is 255 - #1189

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gthess merged 1 commit into
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wenxuan70:bugfix/dname_str
Dec 3, 2024
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Fix the dname_str method to cause conversion errors when the domain name length is 255#1189
gthess merged 1 commit into
NLnetLabs:masterfrom
wenxuan70:bugfix/dname_str

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Fix #1188

gthess added a commit that referenced this pull request Dec 2, 2024
@gthess gthess mentioned this pull request Dec 2, 2024
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gthess merged commit 06fb30d into NLnetLabs:master Dec 3, 2024
gthess added a commit that referenced this pull request Dec 3, 2024
- Merge #1189: Fix the dname_str method to cause conversion errors
  when the domain name length is 255.
- Merge #1197: dname_str() fixes.
@gthess gthess self-assigned this Dec 3, 2024
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gthess commented Dec 3, 2024

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Thanks for this! I took the opportunity to include some unit tests and go over the code to clean the calling conventions of dname_str()

jedisct1 added a commit to jedisct1/unbound that referenced this pull request Dec 26, 2024
* nlnet/master:
  - For NLnetLabs#1207: [FR] Support for RESINFO RRType 261 (RFC9606), add   LDNS_RR_TYPE_RESINFO similar to LDNS_RR_TYPE_TXT.
  Changelog entry for NLnetLabs#1204: - Merge NLnetLabs#1204: ci: set persist-credentials: false for actions/checkout   per zizmor suggestion.
  set persist-credentials: false per zizmor suggestion
  - Fix typo in log_servfail.tdir test.
  Changelog entry for NLnetLabs#1187: - Merge NLnetLabs#1187: Create the SSL_CTX for QUIC before chroot and privilege   drop.
  Create the SSL_CTX for QUIC before chroot and privilege drop (NLnetLabs#1187)
  - Safeguard alias loop while looking in the cache for expired answers.
  - Merge NLnetLabs#1198: Fix log-servfail with serve expired and no useful cache   contents.
  - For NLnetLabs#1175, the default value of serve-expired-ttl is set to 86400   (1 day) as suggested by RFC8767.
  Changelog entry for NLnetLabs#1189, NLnetLabs#1197: - Merge NLnetLabs#1189: Fix the dname_str method to cause conversion errors   when the domain name length is 255. - Merge NLnetLabs#1197: dname_str() fixes.
  - For NLnetLabs#1193, introduce log-servfail.tdir and cleanup the log-servfail   setting from other tests.
  - Fix NLnetLabs#1193: log-servfail fails to log host SERVFAIL responses in   Unbound 1.19.2 on Ubuntu 24.04.1 LTS, by not considering cached   failures when trying to reply with expired data.
  - For NLnetLabs#1189, homogenize the input buffer size for dname_str().
  - For NLnetLabs#1189, add unit tests for dname_str() and debug check the input   buffer size.
  Fix the dname_str method to cause conversion errors when the domain name length is 255
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Successfully merging this pull request may close these issues.

When the domain name length is 255, the dname_str method will cause the last label in the converted string to be lost.

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