initial commit

.dockerignore

@@ -0,0 +1,7 @@
+.github
+.gitignore
+.drone.yml
+LICENSE
+README.md
+*/fixtures*
+*.go

.drone.yml

@@ -0,0 +1,53 @@
+---
+metadata:
+  name: linux-amd64
+
+platform:
+  name: linux/amd64
+
+pipeline:
+- test:
+    image: golang:1.10
+    commands:
+    - cd posix
+    - tar -xf fixtures.tar -C /
+    - go test -v
+
+- publish:
+    image: plugins/docker
+    dockerfile: docker/Dockerfile.linux.amd64
+    repo: drone/git
+    auto_tag: true
+    auto_tag_suffix: linux-amd64
+    dry_run: true
+    when:
+      event:
+      - push
+      - tag
+
+---
+metadata:
+  name: linux-arm64
+
+platform:
+  name: linux/arm64
+
+pipeline:
+  test:
+    image: arm64v8/golang:1.10
+    commands:
+    - cd posix
+    - tar -xf fixtures.tar -C /
+    - go test -v
+
+  publish:
+    image: plugins/docker:linux-arm64
+    dockerfile: docker/Dockerfile.linux.arm64
+    repo: drone/git
+    auto_tag: true
+    auto_tag_suffix: linux-arm64
+    dry_run: true
+    when:
+      event:
+      - push
+      - tag

.github/issue_template.md

@@ -0,0 +1,9 @@
+<!-- PLEASE READ BEFORE DELETING
+
+Bugs or Issues? Due to the high number of false positive issues we receive,
+please do not create a GitHub issue until you have discussed and verified
+with community support at:
+
+    https://discourse.drone.io/
+
+-->

LICENSE

@@ -0,0 +1,191 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        https://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2017 Drone.IO, Inc.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       https://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

docker/Dockerfile.linux.amd64

@@ -0,0 +1,5 @@
+FROM alpine:3.6
+RUN apk add --no-cache ca-certificates git openssh curl perl
+
+ADD posix/* /usr/local/bin/
+ENTRYPOINT ["/usr/local/bin/clone"]

docker/Dockerfile.linux.arm

@@ -0,0 +1,5 @@
+FROM alpine:3.6
+RUN apk add --no-cache ca-certificates git openssh curl perl
+
+ADD posix/* /usr/local/bin/
+ENTRYPOINT ["/usr/local/bin/clone"]

docker/Dockerfile.linux.arm64

@@ -0,0 +1,5 @@
+FROM arm64v8/alpine:3.6
+RUN apk add --no-cache ca-certificates git openssh curl perl
+
+ADD posix/* /usr/local/bin/
+ENTRYPOINT ["/usr/local/bin/clone"]

docker/Dockerfile.windows.amd64

@@ -0,0 +1 @@
+FROM microsoft/nanoserver:10.0.14393.1593

posix/clone

@@ -0,0 +1,56 @@
+#!/bin/sh
+
+if [[ ! -z "${DRONE_WORKSPACE}" ]]; then
+	cd ${DRONE_WORKSPACE}
+fi
+
+# if the netrc enviornment variables exist, write
+# the netrc file.
+
+if [[ ! -z "${DRONE_NETRC_MACHINE}" ]]; then
+	cat <<EOF > /root/.netrc
+machine ${DRONE_NETRC_MACHINE}
+login ${DRONE_NETRC_USERNAME}
+password ${DRONE_NETRC_PASSWORD}
+EOF
+fi
+
+# if the ssh_key environment variable exists, write
+# the ssh key and add the netrc machine to the
+# known hosts file.
+
+if [[ ! -z "${SSH_KEY}" ]]; then
+	mkdir /root/.ssh
+	echo -n "$SSH_KEY" > /root/.ssh/id_rsa
+	chmod 600 /root/.ssh/id_rsa
+
+	touch /root/.ssh/known_hosts
+	chmod 600 /root/.ssh/known_hosts
+	ssh-keyscan -H ${DRONE_NETRC_MACHINE} > /etc/ssh/ssh_known_hosts 2> /dev/null
+fi
+
+# configure git global behavior and parameters via the
+# following environment variables:
+
+export GIT_AUTHOR_NAME=${DRONE_COMMIT_AUTHOR_NAME=drone}
+export GIT_AUTHOR_EMAIL=${DRONE_COMMIT_AUTHOR_EMAIL=drone@localhost}
+export GIT_COMMITTER_NAME=${GIT_AUTHOR_NAME}
+export GIT_COMMITTER_EMAIL=${GIT_AUTHOR_EMAIL}
+# GIT_SSL_NO_VERIFY=
+
+
+# invoke the sub-script based on the drone event type.
+# TODO we should ultimately look at the ref, since
+# we need something compatible with deployment events.
+
+case $DRONE_BUILD_EVENT in
+pull_request)
+	clone-pull-request
+	;;
+tag)
+	clone-tag
+	;;
+*)
+	clone-commit
+	;;
+esac

posix/clone-commit

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+FLAGS=""
+if [[ ! -z "${PLUGIN_DEPTH}" ]]; then
+	FLAGS="--depth=${PLUGIN_DEPTH}"
+fi
+
+if [ ! -d .git ]; then
+	git init
+	git remote add origin ${DRONE_REMOTE_URL}
+fi
+
+set -e
+set -x
+
+git fetch ${FLAGS} origin +refs/heads/${DRONE_COMMIT_BRANCH}:
+git checkout ${DRONE_COMMIT_SHA} -b ${DRONE_COMMIT_BRANCH}

posix/clone-pull-request

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+FLAGS=""
+if [[ ! -z "${PLUGIN_DEPTH}" ]]; then
+	FLAGS="--depth=${PLUGIN_DEPTH}"
+fi
+
+if [ ! -d .git ]; then
+	git init
+	git remote add origin ${DRONE_REMOTE_URL}
+fi
+
+set -e
+set -x
+
+git fetch ${FLAGS} origin +refs/heads/${DRONE_COMMIT_BRANCH}:
+git checkout ${DRONE_COMMIT_BRANCH}
+
+git fetch origin ${DRONE_COMMIT_REF}:
+git rebase ${DRONE_COMMIT_SHA}

posix/clone-tag

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+FLAGS=""
+if [[ ! -z "${PLUGIN_DEPTH}" ]]; then
+	FLAGS="--depth=${PLUGIN_DEPTH}"
+fi
+
+if [ ! -d .git ]; then
+	git init
+	git remote add origin ${DRONE_REMOTE_URL}
+fi
+
+set -e
+set -x
+
+git fetch ${FLAGS} origin +refs/tags/${DRONE_TAG}:
+git checkout -qf FETCH_HEAD

posix/fixtures.sh

@@ -0,0 +1,40 @@
+#!/bin/sh
+
+# This script creates a git repository and seeds with
+# commit history. Used by unit tests.
+
+set -e
+set -x
+
+rm -rf /tmp/remote/greeting
+mkdir -p /tmp/remote/greeting
+pushd /tmp/remote/greeting
+
+git init
+
+echo "hi world" > hello.txt
+git add hello.txt
+git commit -m "say hi"
+git tag v1.0.0
+
+echo "hello world" > hello.txt
+git add hello.txt
+git commit -m "say hello"
+git tag v1.1.0
+
+git checkout -b fr
+
+echo "salut monde" > hello.txt
+git add hello.txt
+git commit -m "say hello in french"
+git tag v2.0.0
+
+echo "bonjour monde" > hello.txt
+git add hello.txt
+git commit -m "say hello en francais"
+git tag v2.1.0
+
+git checkout master
+
+popd
+tar -cvf fixtures.tar /tmp/remote/greeting

posix/posix.go

@@ -0,0 +1 @@
+package posix

posix/posix_test.go

@@ -0,0 +1,259 @@
+package posix
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestCommits(t *testing.T) {
+	remote := "/tmp/remote/greeting"
+
+	base, err := ioutil.TempDir("", "test")
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	defer os.Remove(base)
+
+	for i, test := range tests {
+		local := filepath.Join(base, fmt.Sprint(i))
+		err = os.MkdirAll(local, 0777)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+
+		bin, err := filepath.Abs("clone-commit")
+		if err != nil {
+			t.Error(err)
+			return
+		}
+
+		cmd := exec.Command(bin)
+		cmd.Dir = local
+		cmd.Env = []string{
+			fmt.Sprintf("DRONE_COMMIT_BRANCH=%s", test.branch),
+			fmt.Sprintf("DRONE_COMMIT_SHA=%s", test.commit),
+			fmt.Sprintf("DRONE_WORKSPACE=%s", local),
+			fmt.Sprintf("DRONE_REMOTE_URL=%s", remote),
+		}
+
+		out, err := cmd.CombinedOutput()
+		if err != nil {
+			t.Error(err)
+			t.Log(string(out))
+			return
+		}
+
+		commit, err := getCommit(local)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+
+		branch, err := getBranch(local)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+
+		if want, got := test.commit, commit; got != want {
+			t.Errorf("Want commit %s, got %s", want, got)
+		}
+
+		if want, got := test.branch, branch; got != want {
+			t.Errorf("Want branch %s, got %s", want, got)
+		}
+
+		file := filepath.Join(local, test.file)
+		out, err = ioutil.ReadFile(file)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+
+		if want, got := test.text, string(out); want != got {
+			t.Errorf("Want file content %q, got %q", want, got)
+		}
+	}
+}
+
+func TestTags(t *testing.T) {
+	remote := "/tmp/remote/greeting"
+
+	base, err := ioutil.TempDir("", "test")
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	defer os.Remove(base)
+
+	for i, test := range tests {
+		local := filepath.Join(base, fmt.Sprint(i))
+		err = os.MkdirAll(local, 0777)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+
+		bin, err := filepath.Abs("clone-tag")
+		if err != nil {
+			t.Error(err)
+			return
+		}
+
+		cmd := exec.Command(bin)
+		cmd.Dir = local
+		cmd.Env = []string{
+			fmt.Sprintf("DRONE_TAG=%s", test.tag),
+			fmt.Sprintf("DRONE_COMMIT_SHA=%s", test.commit),
+			fmt.Sprintf("DRONE_WORKSPACE=%s", local),
+			fmt.Sprintf("DRONE_REMOTE_URL=%s", remote),
+		}
+
+		out, err := cmd.CombinedOutput()
+		if err != nil {
+			t.Error(err)
+			t.Log(string(out))
+			return
+		}
+
+		commit, err := getCommit(local)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+
+		if want, got := test.commit, commit; got != want {
+			t.Errorf("Want commit %s, got %s", want, got)
+		}
+
+		file := filepath.Join(local, test.file)
+		out, err = ioutil.ReadFile(file)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+
+		if want, got := test.text, string(out); want != got {
+			t.Errorf("Want file content %q, got %q", want, got)
+		}
+	}
+}
+
+func TestPullRequest(t *testing.T) {
+	remote := "https://github.com/octocat/Spoon-Knife.git"
+
+	local, err := ioutil.TempDir("", "test")
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	defer os.Remove(local)
+
+	bin, err := filepath.Abs("clone-pull-request")
+	if err != nil {
+		t.Error(err)
+		return
+	}
+
+	cmd := exec.Command(bin)
+	cmd.Dir = local
+	cmd.Env = []string{
+		fmt.Sprintf("DRONE_COMMIT_REF=%s", "refs/pull/14596/head"),
+		fmt.Sprintf("DRONE_COMMIT_BRANCH=%s", "master"),
+		fmt.Sprintf("DRONE_COMMIT_SHA=%s", "26923a8f37933ccc23943de0d4ebd53908268582"),
+		fmt.Sprintf("DRONE_WORKSPACE=%s", local),
+		fmt.Sprintf("DRONE_REMOTE_URL=%s", remote),
+	}
+
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		t.Error(err)
+		t.Log(string(out))
+		return
+	}
+
+	commit, err := getCommit(local)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+
+	branch, err := getBranch(local)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+
+	if want, got := "26923a8f37933ccc23943de0d4ebd53908268582", commit; got != want {
+		t.Errorf("Want commit %s, got %s", want, got)
+	}
+
+	if want, got := "master", branch; got != want {
+		t.Errorf("Want branch %s, got %s", want, got)
+	}
+
+	file := filepath.Join(local, "directory/file.txt")
+	out, err = ioutil.ReadFile(file)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+}
+
+func getBranch(path string) (string, error) {
+	cmd := exec.Command("git", "rev-parse", "--abbrev-ref", "HEAD")
+	cmd.Dir = path
+	out, err := cmd.CombinedOutput()
+	return strings.TrimSpace(string(out)), err
+}
+
+func getCommit(path string) (string, error) {
+	cmd := exec.Command("git", "rev-parse", "HEAD")
+	cmd.Dir = path
+	out, err := cmd.CombinedOutput()
+	return strings.TrimSpace(string(out)), err
+}
+
+var tests = []struct {
+	branch string
+	commit string
+	tag    string
+	file   string
+	text   string
+}{
+	{
+		commit: "9cd29dca0a98f76df94d66493ee54788a18190a0",
+		branch: "master",
+		tag:    "v1.0.0",
+		file:   "hello.txt",
+		text:   "hi world\n",
+	},
+	{
+		commit: "bbdf5d4028a6066431f59fcd8d83afff610a55ae",
+		branch: "master",
+		tag:    "v1.1.0",
+		file:   "hello.txt",
+		text:   "hello world\n",
+	},
+	{
+		commit: "553af1ca53c9ad54b096d7ff1416f6c4d1e5049f",
+		branch: "fr",
+		tag:    "v2.0.0",
+		file:   "hello.txt",
+		text:   "salut monde\n",
+	},
+	{
+		commit: "94b4a1710d1581b8b00c5f7b077026eae3c07646",
+		branch: "fr",
+		tag:    "v2.1.0",
+		file:   "hello.txt",
+		text:   "bonjour monde\n",
+	},
+}