commit d8c63763fdc41ca7a2d8558806e7d270b4bc600e
Author: Nagy Károly Gábriel <k@jpi.io>
Date:   Fri Jan 18 22:13:06 2019 +0200

    gip: add initial files
    
    Signed-off-by: Nagy Károly Gábriel <k@jpi.io>

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..fb7bb93
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,19 @@
+# http://editorconfig.org
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_size = 4
+indent_style = space
+
+[*.go]
+indent_style = tab
+indent_size = 4
+
+[Makefile]
+indent_style = tab
+
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..555384d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,27 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+*.test
+*.prof
+/.GOPATH
+/bin
+/vendor
diff --git a/Gopkg.lock b/Gopkg.lock
new file mode 100644
index 0000000..3a5e711
--- /dev/null
+++ b/Gopkg.lock
@@ -0,0 +1,50 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  digest = "1:d64a0aa67f715fd28f5ddfe0d74c06b6d6fe0fed931d77e662f2c4694f6854dc"
+  name = "github.com/miekg/dns"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "56be65265e34e731425e0269a301774938827c60"
+  version = "v1.1.3"
+
+[[projects]]
+  branch = "master"
+  digest = "1:d5891c5bca9c62e5d394ca26491d2b710a1dc08cedeb0ca8f9ac4c3305120b02"
+  name = "golang.org/x/crypto"
+  packages = [
+    "ed25519",
+    "ed25519/internal/edwards25519",
+  ]
+  pruneopts = "UT"
+  revision = "ff983b9c42bc9fbf91556e191cc8efb585c16908"
+
+[[projects]]
+  branch = "master"
+  digest = "1:19beed19e4246df7aff387a2bcd4519a386e3fe9637690031c4d4b0cf75f7215"
+  name = "golang.org/x/net"
+  packages = [
+    "bpf",
+    "internal/iana",
+    "internal/socket",
+    "ipv4",
+    "ipv6",
+  ]
+  pruneopts = "UT"
+  revision = "915654e7eabcea33ae277abbecf52f0d8b7a9fdc"
+
+[[projects]]
+  branch = "master"
+  digest = "1:f6f6d9d6f80c9e32acc0f4f3b904e0b9f5b18a7757c2ef941121bd79a10e7bdf"
+  name = "golang.org/x/sys"
+  packages = ["unix"]
+  pruneopts = "UT"
+  revision = "11f53e03133963fb11ae0588e08b5e0b85be8be5"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  input-imports = ["github.com/miekg/dns"]
+  solver-name = "gps-cdcl"
+  solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
new file mode 100644
index 0000000..f5f2bd2
--- /dev/null
+++ b/Gopkg.toml
@@ -0,0 +1,34 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[[constraint]]
+  name = "github.com/miekg/dns"
+  version = "1.1.3"
+
+[prune]
+  go-tests = true
+  unused-packages = true
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..3630990
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019 Nagy Károly Gábriel
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..33493f6
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,150 @@
+# The import path is where your repository can be found.
+# To import subpackages, always prepend the full import path.
+# If you change this, run `make clean`. Read more: https://git.io/vM7zV
+
+mkfile_path := $(abspath $(lastword $(MAKEFILE_LIST)))
+current_dir := $(notdir $(patsubst %/,%,$(dir $(mkfile_path))))
+
+IMPORT_PATH := git.jpi.io/$(USER)/$(current_dir)
+
+# V := 1 # When V is set, print commands and build progress.
+
+# Space separated patterns of packages to skip in list, test, format.
+IGNORED_PACKAGES := /vendor/
+
+.PHONY: all
+all: build
+
+.PHONY: build
+build: .GOPATH/.ok
+	$Q go install $(if $V,-v) $(VERSION_FLAGS) $(IMPORT_PATH)
+
+### Code not in the repository root? Another binary? Add to the path like this.
+# .PHONY: otherbin
+# otherbin: .GOPATH/.ok
+# 	$Q go install $(if $V,-v) $(VERSION_FLAGS) $(IMPORT_PATH)/cmd/otherbin
+
+##### ^^^^^^ EDIT ABOVE ^^^^^^ #####
+
+##### =====> Utility targets <===== #####
+
+.PHONY: clean test list cover format gen
+
+clean:
+	$Q rm -rf bin .GOPATH
+
+test: .GOPATH/.ok
+	$Q go test $(if $V,-v) -i -race $(allpackages) # install -race libs to speed up next run
+ifndef CI
+	$Q go vet $(allpackages)
+	$Q GODEBUG=cgocheck=2 go test -race $(allpackages)
+else
+	$Q ( go vet $(allpackages); echo $$? ) | \
+	    tee .GOPATH/test/vet.txt | sed '$$ d'; exit $$(tail -1 .GOPATH/test/vet.txt)
+	$Q ( GODEBUG=cgocheck=2 go test -v -race $(allpackages); echo $$? ) | \
+	    tee .GOPATH/test/output.txt | sed '$$ d'; exit $$(tail -1 .GOPATH/test/output.txt)
+endif
+
+list: .GOPATH/.ok
+	@echo $(allpackages)
+
+cover: bin/gocovmerge .GOPATH/.ok
+	@echo "NOTE: make cover does not exit 1 on failure, don't use it to check for tests success!"
+	$Q rm -f .GOPATH/cover/*.out .GOPATH/cover/all.merged
+	$(if $V,@echo "-- go test -coverpkg=./... -coverprofile=.GOPATH/cover/... ./...")
+	@for MOD in $(allpackages); do \
+		go test -coverpkg=`echo $(allpackages)|tr " " ","` \
+			-coverprofile=.GOPATH/cover/unit-`echo $$MOD|tr "/" "_"`.out \
+			$$MOD 2>&1 | grep -v "no packages being tested depend on"; \
+	done
+	$Q ./bin/gocovmerge .GOPATH/cover/*.out > .GOPATH/cover/all.merged
+ifndef CI
+	$Q go tool cover -html .GOPATH/cover/all.merged
+else
+	$Q go tool cover -html .GOPATH/cover/all.merged -o .GOPATH/cover/all.html
+endif
+	@echo ""
+	@echo "=====> Total test coverage: <====="
+	@echo ""
+	$Q go tool cover -func .GOPATH/cover/all.merged
+
+format: bin/goimports .GOPATH/.ok
+	$Q find .GOPATH/src/$(IMPORT_PATH)/ -iname \*.go | grep -v \
+	    -e "^$$" $(addprefix -e ,$(IGNORED_PACKAGES)) | xargs ./bin/goimports -w
+
+gen: .GOPATH/.ok
+	@echo "Running go generate"
+	$Q cd $(CURDIR)/.GOPATH/src/$(IMPORT_PATH) && go generate
+	@echo "Done!"
+
+##### =====> Internals <===== #####
+
+.PHONY: setup
+setup: clean .GOPATH/.ok
+	@if ! grep "/.GOPATH" .gitignore > /dev/null 2>&1; then \
+	    echo "/.GOPATH" >> .gitignore; \
+	    echo "/bin" >> .gitignore; \
+	fi
+	go get -u github.com/golang/dep/cmd/dep
+	- go get -u golang.org/x/tools/cmd/goimports
+	- go get -u github.com/wadey/gocovmerge
+	@test -f Gopkg.toml || \
+	(cd $(CURDIR)/.GOPATH/src/$(IMPORT_PATH) && ./bin/dep init)
+	(cd $(CURDIR)/.GOPATH/src/$(IMPORT_PATH) && ./bin/dep ensure)
+VERSION          := $(shell git describe --tags --always --dirty="-dev")
+DATE             := $(shell date -u '+%Y-%m-%d-%H%M UTC')
+VERSION_FLAGS    := -ldflags='-X "main.Version=$(VERSION)" -X "main.BuildTime=$(DATE)"'
+
+# cd into the GOPATH to workaround ./... not following symlinks
+_allpackages = $(shell ( cd $(CURDIR)/.GOPATH/src/$(IMPORT_PATH) && \
+    GOPATH=$(CURDIR)/.GOPATH go list ./... 2>&1 1>&3 | \
+    grep -v -e "^$$" $(addprefix -e ,$(IGNORED_PACKAGES)) 1>&2 ) 3>&1 | \
+    grep -v -e "^$$" $(addprefix -e ,$(IGNORED_PACKAGES)))
+
+# memoize allpackages, so that it's executed only once and only if used
+allpackages = $(if $(__allpackages),,$(eval __allpackages := $$(_allpackages)))$(__allpackages)
+
+export GOPATH := $(CURDIR)/.GOPATH
+unexport GOBIN
+
+Q := $(if $V,,@)
+
+.GOPATH/.ok:
+	$Q mkdir -p "$(dir .GOPATH/src/$(IMPORT_PATH))"
+	$Q ln -s ../../../.. ".GOPATH/src/$(IMPORT_PATH)"
+	$Q mkdir -p .GOPATH/test .GOPATH/cover
+	$Q mkdir -p bin
+	$Q ln -s ../bin .GOPATH/bin
+	$Q touch $@
+
+.PHONY: bin/gocovmerge bin/goimports
+bin/gocovmerge: .GOPATH/.ok
+	@test -d ./vendor/github.com/wadey/gocovmerge || \
+	    { echo "Vendored gocovmerge not found, try running 'make setup'..."; exit 1; }
+	$Q go install $(IMPORT_PATH)/vendor/github.com/wadey/gocovmerge
+bin/goimports: .GOPATH/.ok
+	@test -d ./vendor/golang.org/x/tools/cmd/goimports || \
+	    { echo "Vendored goimports not found, try running 'make setup'..."; exit 1; }
+	$Q go install $(IMPORT_PATH)/vendor/golang.org/x/tools/cmd/goimports
+
+# Based on https://github.com/cloudflare/hellogopher - v1.1 - MIT License
+#
+# Copyright (c) 2017 Cloudflare
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..9d7c524
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# gip
+
+Find your public IP
diff --git a/gip.go b/gip.go
new file mode 100644
index 0000000..787fc50
--- /dev/null
+++ b/gip.go
@@ -0,0 +1,68 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/miekg/dns"
+)
+
+/*
+dig {-4,-6} +short myip.opendns.com @resolver1.opendns.com
+dig {-4,-6} TXT +short o-o.myaddr.l.google.com @ns1.google.com
+*/
+
+func get4(c *dns.Client, m *dns.Msg, nameserver string) (*dns.Msg, error) {
+	c.Net = "udp4"
+	m.SetQuestion("myip.opendns.com.", dns.TypeA)
+
+	r, _, err := c.Exchange(m, nameserver)
+	return r, err
+}
+
+func get6(c *dns.Client, m *dns.Msg, nameserver string) (*dns.Msg, error) {
+	c.Net = "udp6"
+	m.SetQuestion("myip.opendns.com.", dns.TypeAAAA)
+
+	r, _, err := c.Exchange(m, nameserver)
+	return r, err
+
+}
+
+func printIP(ra []dns.RR) []string {
+	var ips []string
+	for _, ansa := range ra {
+		switch ansb := ansa.(type) {
+		case *dns.A:
+			ips = append(ips, ansb.A.String())
+		case *dns.AAAA:
+			ips = append(ips, ansb.AAAA.String())
+		}
+	}
+	return ips
+}
+
+func main() {
+	nameserver := dns.Fqdn("resolver1.opendns.com") + ":53"
+
+	c := new(dns.Client)
+	c.Net = "udp4"
+	m := &dns.Msg{
+		MsgHdr: dns.MsgHdr{
+			RecursionDesired: true,
+		},
+		Question: make([]dns.Question, 1),
+	}
+	r4, err := get4(c, m, nameserver)
+	if err != nil {
+		fmt.Println(err)
+	} else {
+		fmt.Println(printIP(r4.Answer))
+	}
+	r6, e6 := get6(c, m, nameserver)
+	if err != nil {
+		fmt.Println(e6)
+	} else {
+		fmt.Println(printIP(r6.Answer))
+	}
+
+}