From a243eae91acddd60264cdf0789c4cc72ebae7073 Mon Sep 17 00:00:00 2001
From: Scott Alfter <scott@alfter.us>
Date: Thu, 23 Oct 2025 09:21:23 -0700
Subject: [PATCH] initial commit

---
 .gitignore                    |  1 +
 README.md                     | 57 +++++++++++++++++++++++++++++++++++
 config.sh                     | 15 +++++++++
 delete-gitea-projects.sh      | 17 +++++++++++
 get-gitlab-container-repos.sh | 13 ++++++++
 import.sh                     | 28 +++++++++++++++++
 list-gitlab-projects.sh       |  9 ++++++
 7 files changed, 140 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 README.md
 create mode 100644 config.sh
 create mode 100755 delete-gitea-projects.sh
 create mode 100644 get-gitlab-container-repos.sh
 create mode 100755 import.sh
 create mode 100755 list-gitlab-projects.sh

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b25c15b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*~
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..4942212
--- /dev/null
+++ b/README.md
@@ -0,0 +1,57 @@
+GitLab-to-Gitea Import Tools
+============================
+
+I knocked these together while migrating from a self-hosted GitLab CE
+instance to a self-hosted Gitea instance.  It should also prove useful for
+migrating from gitlab.com.  It is aimed mainly at batch-migrating
+repositories for a single user, but admins could extend it to migrate
+repositories for all users.
+
+config.sh
+---------
+
+Set your GitLab and Gitea URLs, usernames, and access tokens here.
+
+list-gitlab-projects.sh
+-----------------------
+
+This pulls a list of projects owned by the account associated with the
+access token.  Remove "&owned=true" for all projects on the instance...this
+might be useful on a self-hosted GitLab, but probably should be left in
+place for gitlab.com.  :)
+
+You might find it useful to filter the output to get just the repo names:
+
+```./list-gitlab-projects.sh | sed "s/.*\///;s/\.git//" >repos.txt```
+
+import.sh
+---------
+
+This fires off a request through the Gitea API to migrate a repository from
+GitLab.  It takes two arguments: 
+
+* repo name
+* private flag (will import as a private repo unless this is set to
+  ```false```)
+
+You might want to call this from a script that batches up all your imports
+together.
+
+get-gitlab-container-repos.sh
+-----------------------------
+
+This pulls a list of container image tags within your repositories.  Once
+you have this list, it's trivial to script up a ```docker image
+pull```/```docker image push``` loop to transfer the images.
+
+This script requires [jq](https://github.com/jqlang/jq) for some JSON
+filtering.  Your Linux distro probably has it.  (Arch does, at least.)
+
+delete-gitea-projects.sh
+------------------------
+
+This is supposed to remove all projects in your Gitea account, but I found
+that it might need to be run several times before it completely clears out
+your account.  It worked well enough for me to not have to wipe out the
+entire Gitea instance and start over.  Depending on your circumstances, you
+might not need it.
diff --git a/config.sh b/config.sh
new file mode 100644
index 0000000..2607bc2
--- /dev/null
+++ b/config.sh
@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+# GitLab
+GL_DOMAIN="https://gitlab.alfter.us"
+GL_CR_DOMAIN="https://cr.gitlab.alfter.us"
+GL_USER="salfter"
+GL_TOKEN="glpat-PUT-YOUR-GITLAB-PERSONAL-ACCESS-TOKEN-HERE"
+# a token with read-only access is sufficient
+
+# Gitea
+GT_DOMAIN="https://git.alfter.us"
+# Gitea serves container images on the same domain, so GT_CR_DOMAIN isn't needed
+GT_USER="salfter"
+GT_TOKEN="PUT-YOUR-GITEA-ACCESS-TOKEN-HERE"
+# a token with read/write access is required
diff --git a/delete-gitea-projects.sh b/delete-gitea-projects.sh
new file mode 100755
index 0000000..5954359
--- /dev/null
+++ b/delete-gitea-projects.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# BUG: need to repeat until all repos are gone...it's not getting all of them
+
+source config.sh
+
+for ((i=1; ; i+=1)); do
+    contents=$(curl -sX GET "${GT_DOMAIN}/api/v1/user/repos?limit=30&page=${i}" -H "Accept: application/json" -H "Authorization: token ${GT_TOKEN}")
+    if [ "$(echo $contents | jq -e '. | length == 0')" == "true" ]; then 
+       break
+    fi
+    for repo in $(echo "$contents" | jq -r '.[].name')
+    do
+    	echo $repo
+    	curl -sX DELETE "${GT_DOMAIN}/api/v1/repos/${GT_USER}/${repo}" -H "Accept: application/json" -H "Authorization: token ${GT_TOKEN}"
+    done
+done
diff --git a/get-gitlab-container-repos.sh b/get-gitlab-container-repos.sh
new file mode 100644
index 0000000..ad184d1
--- /dev/null
+++ b/get-gitlab-container-repos.sh
@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+source config.sh
+
+SCOPE="registry:catalog:*"
+
+token=$(curl -s --request GET \
+    --user "${GL_USER}:${GL_TOKEN}" \
+    --url "${GL_DOMAIN}/jwt/auth?service=container_registry&scope=${SCOPE}" | jq -r .token)
+
+curl --header "Authorization: Bearer $token" \
+    --url "${GL_CR_DOMAIN}/v2/_catalog"
+    
\ No newline at end of file
diff --git a/import.sh b/import.sh
new file mode 100755
index 0000000..b251e99
--- /dev/null
+++ b/import.sh
@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+source config.sh
+
+if [ "$2" != "false" ]
+then
+  private=true
+else
+  private=false
+fi
+
+curl -sX 'POST' \
+  "${GT_DOMAIN}/api/v1/repos/migrate" \
+  -H 'accept: application/json' \
+  -H 'Authorization: token '${GT_TOKEN}'' \
+  -H 'Content-Type: application/json' \
+  -d '{
+  "auth_token": "'${GL_TOKEN}'",
+  "clone_addr": "'${GL_DOMAIN}'/'${GL_USER}'/'$1'",
+  "mirror": false,
+  "private": '$private',
+  "pull_requests": true,
+  "releases": true,
+  "repo_name": "'$1'",
+  "repo_owner": "'${GT_USER}'",
+  "service": "gitlab",
+  "wiki": true
+}' | jq -r '.id'
diff --git a/list-gitlab-projects.sh b/list-gitlab-projects.sh
new file mode 100755
index 0000000..969b135
--- /dev/null
+++ b/list-gitlab-projects.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+source config.sh
+for ((i=1; ; i+=1)); do
+    contents=$(curl -s "$GL_DOMAIN/api/v4/projects?private_token=$GL_TOKEN&per_page=100&owned=true&page=$i")
+    if jq -e '. | length == 0' >/dev/null; then 
+       break
+    fi <<< "$contents"
+    echo "$contents" | jq -r '.[].ssh_url_to_repo'
+done