transport: ssh, new DefaultAuthBuilder variable

.travis.yml

@@ -25,15 +25,18 @@ before_script:
   - make build-git
 
 before_install:
-  - eval "$(ssh-agent -s)"
-  # we only decrypt the SSH key when we aren't in a pull request
-  #- 'if [ "$TRAVIS_PULL_REQUEST" = "false" ]; then bash .travis/install_key.sh; fi'
-  #- 'if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then export SSH_AUTH_SOCK="" ; fi'\
-  # temporal fix skip of SSH test
-  - export SSH_AUTH_SOCK=""
   - git config --global user.email "[email protected]"
   - git config --global user.name "Travis CI"
 
+  # we only decrypt the SSH key when we aren't in a pull request
+  - >
+    if [ "$TRAVIS_PULL_REQUEST" = "false" ] ; then \
+      bash .travis/install_key.sh; \
+      SSH_TEST_PRIVATE_KEY=$HOME/.travis/deploy.pem; \
+    else \
+      export SSH_AUTH_SOCK=""; \
+    fi
+
 install:
   - go get -v -t ./...
 

.travis/install_key.sh

@@ -1,3 +1,11 @@
-openssl aes-256-cbc -K $encrypted_1477e58fe67a_key -iv $encrypted_1477e58fe67a_iv -in .travis/deploy.pem.enc -out .travis/deploy.pem -d
+#!/bin/bash
+export SSH_TEST_PRIVATE_KEY=$PWD/.travis/deploy.pem
+
+openssl aes-256-cbc \
+    -K $encrypted_1477e58fe67a_key \
+    -iv $encrypted_1477e58fe67a_iv \
+    -in .travis/deploy.pem.enc \
+    -out .travis/deploy.pem -d
+
 chmod 600 .travis/deploy.pem
-ssh-add .travis/deploy.pem
+

plumbing/transport/ssh/common.go

@@ -14,6 +14,12 @@ import (
 // DefaultClient is the default SSH client.
 var DefaultClient = common.NewClient(&runner{})
 
+// DefaultAuthBuilder is the function used to create a default AuthMethod, when
+// the user doesn't provide any.
+var DefaultAuthBuilder = func(user string) (AuthMethod, error) {
+	return NewSSHAgentAuth(user)
+}
+
 type runner struct{}
 
 func (r *runner) Command(cmd string, ep transport.Endpoint, auth transport.AuthMethod) (common.Command, error) {
@@ -119,7 +125,7 @@ func (c *command) setAuthFromEndpoint() error {
 	}
 
 	var err error
-	c.auth, err = NewSSHAgentAuth(u)
+	c.auth, err = DefaultAuthBuilder(u)
 	return err
 }
 

plumbing/transport/ssh/upload_pack_test.go

@@ -16,10 +16,7 @@ type UploadPackSuite struct {
 var _ = Suite(&UploadPackSuite{})
 
 func (s *UploadPackSuite) SetUpSuite(c *C) {
-	if os.Getenv("SSH_AUTH_SOCK") == "" {
-		c.Skip("SSH_AUTH_SOCK is not set")
-	}
-
+	s.setAuthBuilder(c)
 	s.UploadPackSuite.Client = DefaultClient
 
 	ep, err := transport.NewEndpoint("[email protected]:git-fixtures/basic.git")
@@ -34,3 +31,17 @@ func (s *UploadPackSuite) SetUpSuite(c *C) {
 	c.Assert(err, IsNil)
 	s.UploadPackSuite.NonExistentEndpoint = ep
 }
+
+func (s *UploadPackSuite) setAuthBuilder(c *C) {
+	privateKey := os.Getenv("SSH_TEST_PRIVATE_KEY")
+	if privateKey != "" {
+		DefaultAuthBuilder = func(user string) (AuthMethod, error) {
+			return NewPublicKeysFromFile(user, privateKey)
+		}
+	}
+
+	if privateKey == "" && os.Getenv("SSH_AUTH_SOCK") == "" {
+		c.Skip("SSH_AUTH_SOCK or SSH_TEST_PRIVATE_KEY are required")
+		return
+	}
+}