Ondřej Surý f1ec5e1809 Process dig -x reverse octets iteratively ... reverse_octets() recursed once per dot, with depth bounded only by ARG_MAX (~2 MiB on Linux), so feeding dig -x a deep input like '1.1.1.…1' busted the call stack and crashed the tool with SIGSEGV instead of a structured error. The transformation it performs is purely textual (split on '.', emit components in reverse), so the recursion was never load-bearing. Walk the input once into a fixed-size array of label slices, capped at DNS_NAME_MAXLABELS (which is the most we could ever fit into the result buffer anyway), then iterate the array in reverse to write the output. Inputs with more than DNS_NAME_MAXLABELS labels now return DNS_R_NAMETOOLONG, which dig.c surfaces as 'Invalid IP address' and exit 1. Drop the unnecessary (int) casts on ptrdiff_t/size_t lengths while at it. Assisted-by: Claude:claude-opus-4-7		2026-04-30 14:02:02 +02:00
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.gitignore	[master] update gitignore files; use rev-parse to get srcid	2014-06-17 13:49:30 -07:00
dig.c	switch to RETERR where it wasn't being used	2025-12-03 13:45:43 -08:00
dig.rst	Add examples to the dig man page	2026-02-22 11:03:10 -05:00
dighost.c	Process dig -x reverse octets iteratively	2026-04-30 14:02:02 +02:00
dighost.h	Add +[no]showtruncated to dig	2025-12-02 09:34:13 +11:00
host.c	switch to RETERR where it wasn't being used	2025-12-03 13:45:43 -08:00
host.rst	Do HTTPS record query from host in addition	2025-02-18 14:56:08 +00:00
meson.build	replace the build system with meson	2025-06-11 10:30:12 +03:00
nslookup.c	add dns_message API to add EDNS options	2025-11-21 11:13:18 -08:00
nslookup.rst	Add internal hyperlinks to See Also section of manual pages	2022-03-14 10:46:36 +01:00