Add public/channel content filtering to simple_repeater (low priority)#2733
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disq wants to merge 15 commits into
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Add public/channel content filtering to simple_repeater (low priority)#2733disq wants to merge 15 commits into
disq wants to merge 15 commits into
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Lets a repeater decrypt channels it holds the key for (incl. the built-in public channel) and drop messages matching blocked keywords or sender names before forwarding. Configured via new "filter" CLI commands and persisted to /channel_filter. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Adds a MESH_DEBUG line on each dropped message, plus "filter stats" and "filter stats reset" commands to view/clear the filtered counter. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Folds look-alike codepoints (fullwidth, math alphanumerics, circled/ squared letters, regional indicators, Cyrillic/Greek homoglyphs, accented Latin) to plain ASCII and strips zero-width/combining marks before matching keywords and sender names. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Feature is now fully compiled out unless built with -D WITH_CHANNEL_FILTER. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Demote to a Configuration subsection with a "(When ... compiled in)" heading, matching the GPS/Sensors/Bridge sections, and drop the explicit build-flag callout. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…ross whole message Guard data[len]=0 against an over-long crafted payload (OOB store), and match keywords against the whole folded message so a blocked word can't be hidden in the self-declared sender name. Also drop the unguarded ctype.h. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
A 16/32-byte key is 32/64 hex chars while base64 PSKs are 24/44 chars, so all-hex-and-32/64-long disambiguates cleanly. Widen the stored-PSK buffer to fit a 64-char hex key. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
disq
changed the title
Keys are never displayed (filter list shows counts only), so persist the decoded GroupChannel directly instead of the original PSK string. Removes the 272-byte filter_channel_psk[] buffer and the base64/hex round-trip; config file is now a versioned binary blob. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Hashtag channels key off the first 16 bytes of SHA256("#name") (same as
MeshCore clients), so `filter channel #selftest` derives the key directly
instead of needing a pasted PSK.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Add `filter channel remove <#name|psk|public>` to drop one channel instead of clearing all. Matched by the resolved key, so any equivalent spec works. Decode logic shared between add and remove via decodeChannelKey(). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
filter unblock <kw> / filter unsender <name> drop one keyword/sender by exact match instead of clearing all (filter list shows the stored terms). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Hashtag channel names are [a-z0-9-], so fold operator input to lowercase before deriving the key — #SelfTest now matches the real #selftest channel. Safe since no valid hashtag name contains uppercase. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Lets a repeater decrypt channels it holds the key for (incl. the built-in public channel) and drop messages matching blocked keywords or sender names before forwarding. Configured via new "filter" CLI commands and persisted to /channel_filter.
Tested to be working with
Publicand hashtag channels, with or without scope set.