Files
ctrld/go.mod
Cuong Manh Le b65a5ac283 all: fix bug that causes ctrld stop working if bootstrap failed
The bootstrap process has two issues that can make ctrld stop resolving
after restarting machine host.

ctrld uses bootstrap DNS and os nameservers for resolving upstream. On
unix, /etc/resolv.conf content is used to get available nameservers.
This works well when installing ctrld. However, after being installed,
ctrld may modify the content of /etc/resolv.conf itself, to make other
apps use its listener as DNS resolver. So when ctrld starts after OS
restart, it ends up using [bootstrap DNS + ctrld's listener], for
resolving upstream. At this moment, if ctrld could not contact bootstrap
DNS for any reason, upstream domain will not be resolved.

For above reason, an upstream may not have bootstrap IPs after ctrld
starts. When re-bootstrapping, if there's no bootstrap IPs, ctrld should
call the setup bootstrap process again. Currently, it does not, causing
all queries failed.

This commit fixes above issue by adding mechanism for retrieving OS
nameservers properly, by querying routing table information:

 - Parsing /proc/net subsystem on Linux.
 - For BSD variants, just fetching routing information base from OS.
 - On Windows, just include the gateway information when reading iface.

The fixing for second issue is trivial, just kickoff a bootstrap process
if there's no bootstrap IPs when re-boostrapping.

While at it, also ensure that fetching resolver information from
ControlD API is also used the same approach.

Fixes #34
2023-03-31 10:23:05 +07:00

78 lines
3.3 KiB
Modula-2

module github.com/Control-D-Inc/ctrld
go 1.19
require (
github.com/coreos/go-systemd/v22 v22.3.3-0.20220203105225-a9a7ef127534
github.com/cuonglm/osinfo v0.0.0-20230329055532-c513f836da19
github.com/frankban/quicktest v1.14.3
github.com/fsnotify/fsnotify v1.6.0
github.com/go-playground/validator/v10 v10.11.1
github.com/godbus/dbus/v5 v5.0.6
github.com/hashicorp/golang-lru/v2 v2.0.1
github.com/illarion/gonotify v1.0.1
github.com/insomniacslk/dhcp v0.0.0-20211209223715-7d93572ebe8e
github.com/kardianos/service v1.2.1
github.com/miekg/dns v1.1.50
github.com/pelletier/go-toml/v2 v2.0.6
github.com/quic-go/quic-go v0.32.0
github.com/rs/zerolog v1.28.0
github.com/spf13/cobra v1.4.0
github.com/spf13/viper v1.14.0
github.com/stretchr/testify v1.8.1
golang.org/x/net v0.7.0
golang.org/x/sync v0.1.0
golang.org/x/sys v0.5.0
golang.zx2c4.com/wireguard/windows v0.5.3
tailscale.com v1.34.1
)
require (
github.com/alexbrainman/sspi v0.0.0-20210105120005-909beea2cc74 // indirect
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/go-playground/locales v0.14.0 // indirect
github.com/go-playground/universal-translator v0.18.0 // indirect
github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
github.com/golang/mock v1.6.0 // indirect
github.com/google/go-cmp v0.5.9 // indirect
github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 // indirect
github.com/hashicorp/hcl v1.0.0 // indirect
github.com/inconshreveable/mousetrap v1.0.0 // indirect
github.com/josharian/native v1.0.0 // indirect
github.com/jsimonetti/rtnetlink v1.1.2-0.20220408201609-d380b505068b // indirect
github.com/kr/pretty v0.3.0 // indirect
github.com/kr/text v0.2.0 // indirect
github.com/leodido/go-urn v1.2.1 // indirect
github.com/magiconair/properties v1.8.7 // indirect
github.com/mattn/go-colorable v0.1.12 // indirect
github.com/mattn/go-isatty v0.0.14 // indirect
github.com/mdlayher/ethernet v0.0.0-20190606142754-0394541c37b7 // indirect
github.com/mdlayher/netlink v1.6.0 // indirect
github.com/mdlayher/raw v0.0.0-20191009151244-50f2db8cc065 // indirect
github.com/mdlayher/socket v0.2.3 // indirect
github.com/mitchellh/mapstructure v1.5.0 // indirect
github.com/onsi/ginkgo/v2 v2.2.0 // indirect
github.com/pelletier/go-toml v1.9.5 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/quic-go/qpack v0.4.0 // indirect
github.com/quic-go/qtls-go1-18 v0.2.0 // indirect
github.com/quic-go/qtls-go1-19 v0.2.0 // indirect
github.com/quic-go/qtls-go1-20 v0.1.0 // indirect
github.com/rogpeppe/go-internal v1.8.1-0.20211023094830-115ce09fd6b4 // indirect
github.com/spf13/afero v1.9.3 // indirect
github.com/spf13/cast v1.5.0 // indirect
github.com/spf13/jwalterweatherman v1.1.0 // indirect
github.com/spf13/pflag v1.0.5 // indirect
github.com/subosito/gotenv v1.4.1 // indirect
github.com/u-root/uio v0.0.0-20220204230159-dac05f7d2cb4 // indirect
go4.org/mem v0.0.0-20210711025021-927187094b94 // indirect
golang.org/x/crypto v0.4.0 // indirect
golang.org/x/exp v0.0.0-20221205204356-47842c84f3db // indirect
golang.org/x/mod v0.6.0 // indirect
golang.org/x/text v0.7.0 // indirect
golang.org/x/tools v0.2.0 // indirect
gopkg.in/ini.v1 v1.67.0 // indirect
gopkg.in/yaml.v2 v2.4.0 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
)