Adds 2FA support to git-fork

bin/git-fork

@@ -1,21 +1,21 @@
 #!/usr/bin/env bash
 
 abort() {
-  echo $@
+  echo "$@"
   exit 1
 }
 
 url="$1"
-
-test -z "$url" && url=`git remote get-url origin 2> /dev/null` && origin=true
-
+test -z "$url" && url=$(git remote get-url origin 2> /dev/null) && origin=true
 # validate repo url
 test -z "$url" && abort "github repo needs to be specified as an argument"
 
 # validate user
 echo "Enter your github username"
 read user
-[ "$user" = 'n' ] && abort "git username required"
+[ -n "$user" ] || abort "git username required"
+echo "Enter github two-factor authentication code (leave blank if not set up)"
+read MFA_CODE
 
 # extract owner + project from repo url
 project=${url##*/}
@@ -31,28 +31,32 @@ fi
 [ -z "$project" -o -z "$owner" ] && abort "github repo needs to be specified as an argument"
 
 # create fork
-curl -X POST -u "$user" "https://api.github.com/repos/$owner/$project/forks"
+curl -qs \
+  -X POST \
+  -u "$user" \
+  -H "X-GitHub-OTP: $MFA_CODE" \
+  "https://api.github.com/repos/$owner/$project/forks"
+
 [ $? = 0 ] || abort "fork failed"
 
+echo "Add GitHub remote branch via SSH (you will be prompted to verify the server's credentials)? (y/n)"
+read use_ssh
 # Check if user has ssh configured with GitHub
-ssh -o BatchMode=yes [email protected] exit >/dev/null 2>&1
-ssh_exit_code=$?
-if [[ "$ssh_exit_code" = 0 ]] || [[ "$ssh_exit_code" = 1 ]]; then
+if [ -n "$use_ssh" ] && ssh -T [email protected] 2>&1 | grep -qi 'success'; then
   remote_prefix="[email protected]:"
 else
   remote_prefix="https://github.com/"
 fi
 
 if [ "$origin" = true ]; then
     git remote rename origin upstream
-    git remote add origin "$remote_prefix$user/$project"
+    git remote add origin "${remote_prefix}${user}/${project}.git"
     git fetch origin
 else
     # clone forked repo into current dir
-    git clone "$remote_prefix$user/$project" "$project"
-
+    git clone "${remote_prefix}${user}/${project}.git" "$project"
     # add reference to origin fork so can merge in upstream changes
     cd "$project"
-    git remote add upstream "$remote_prefix$owner/$project"
+    git remote add upstream "${remote_prefix}${owner}/${project}.git"
     git fetch upstream
 fi