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| author | Ludovic Courtès <ludo@gnu.org> | 2021-12-18 17:55:04 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2021-12-20 16:21:40 +0100 |
| commit | 4df584aeac56fb6575ba43bc94f60f04522caf88 (patch) | |
| tree | d19e4eda0c4147074f67636bbe438de949376f31 /gnu/services | |
| parent | ddf9345dfec208611261ab06052de47fe8873f88 (diff) | |
| download | guix-4df584aeac56fb6575ba43bc94f60f04522caf88.tar guix-4df584aeac56fb6575ba43bc94f60f04522caf88.tar.gz | |
services: static-networking: Sanitize <network-address> values.
This makes sure users do not mistakenly configuring a network with "/0"
as its netmask.
* gnu/services/base.scm (assert-valid-address): New procedure.
(<network-address>)[value]: Add it as 'sanitize'.
Diffstat (limited to 'gnu/services')
| -rw-r--r-- | gnu/services/base.scm | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/gnu/services/base.scm b/gnu/services/base.scm index 5f93483dda..49ec856de4 100644 --- a/gnu/services/base.scm +++ b/gnu/services/base.scm @@ -35,8 +35,9 @@ (define-module (gnu services base) #:use-module (guix store) #:use-module (guix deprecation) - #:autoload (guix diagnostics) (warning) + #:autoload (guix diagnostics) (warning &fix-hint) #:autoload (guix i18n) (G_) + #:use-module (guix combinators) #:use-module (gnu services) #:use-module (gnu services admin) #:use-module (gnu services shepherd) @@ -72,6 +73,8 @@ #:use-module (guix i18n) #:use-module (srfi srfi-1) #:use-module (srfi srfi-26) + #:use-module (srfi srfi-34) + #:use-module (srfi srfi-35) #:use-module (ice-9 match) #:use-module (ice-9 format) #:re-export (user-processes-service-type ;backwards compatibility @@ -2388,6 +2391,26 @@ Linux @dfn{kernel mode setting} (KMS)."))) "Return true if STR denotes an IPv6 address." (false-if-exception (->bool (inet-pton AF_INET6 str)))) +(define-compile-time-procedure (assert-valid-address (address string?)) + "Ensure ADDRESS has a valid netmask." + (unless (or (cidr->netmask address) + (and=> (false-if-exception (inet-pton AF_INET address)) + (cut = INADDR_LOOPBACK <>)) + (and=> (false-if-exception (inet-pton AF_INET6 address)) + (cut = 1 <>))) + (raise + (make-compound-condition + (formatted-message (G_ "address '~a' lacks a network mask") + address) + (condition (&error-location + (location + (source-properties->location procedure-call-location)))) + (condition (&fix-hint + (hint (format #f (G_ "\ +Write, say, @samp{\"~a/24\"} for a 24-bit network mask.") + address))))))) + address) + (define-record-type* <static-networking> static-networking make-static-networking static-networking? @@ -2405,7 +2428,8 @@ Linux @dfn{kernel mode setting} (KMS)."))) network-address make-network-address network-address? (device network-address-device) ;string--e.g., "en01" - (value network-address-value) ;string--CIDR notation + (value network-address-value ;string--CIDR notation + (sanitize assert-valid-address)) (ipv6? network-address-ipv6? ;Boolean (thunked) (default |