Add nudge message with magic link to create new Trusted Publisher

Dockerfile

@@ -27,6 +27,7 @@ WORKDIR /app
 COPY LICENSE.md .
 COPY twine-upload.sh .
 COPY print-hash.py .
+COPY print-pkg-names.py .
 COPY oidc-exchange.py .
 COPY attestations.py .
 

print-pkg-names.py

@@ -0,0 +1,35 @@
+import pathlib
+import sys
+
+from packaging import utils
+
+
+def debug(msg: str):
+    print(f'::debug::{msg.title()}', file=sys.stderr)
+
+
+def safe_parse_pkg_name(file_path: pathlib.Path) -> str | None:
+    if file_path.suffix == '.whl':
+        try:
+            return utils.parse_wheel_filename(file_path.name)[0]
+        except utils.InvalidWheelFilename:
+            debug(f'Invalid wheel filename: {file_path.name}')
+            return None
+    elif file_path.suffix == '.gz':
+        try:
+            return utils.parse_sdist_filename(file_path.name)[0]
+        except utils.InvalidSdistFilename:
+            debug(f'Invalid sdist filename: {file_path.name}')
+            return None
+    return None
+
+
+packages_dir = pathlib.Path(sys.argv[1]).resolve()
+
+pkg_names = {
+    pkg_name for file_path in packages_dir.iterdir() if
+    (pkg_name := safe_parse_pkg_name(file_path)) is not None
+}
+
+for package_name in sorted(pkg_names):
+    print(package_name)

requirements/runtime.in

@@ -12,3 +12,6 @@ requests
 # NOTE: Used to generate attestations.
 pypi-attestations ~= 0.0.11
 sigstore ~= 3.2.0
+
+# NOTE: Used to detect the PyPI package name from the distribution files
+packaging

requirements/runtime.txt

@@ -64,7 +64,9 @@ multidict==6.0.5
 nh3==0.2.17
     # via readme-renderer
 packaging==24.1
-    # via pypi-attestations
+    # via
+    #   -r runtime.in
+    #   pypi-attestations
 pkginfo==1.10.0
     # via twine
 platformdirs==4.2.2

twine-upload.sh

@@ -41,6 +41,11 @@ INPUT_SKIP_EXISTING="$(get-normalized-input 'skip-existing')"
 INPUT_PRINT_HASH="$(get-normalized-input 'print-hash')"
 INPUT_ATTESTATIONS="$(get-normalized-input 'attestations')"
 
+REPOSITORY_NAME="$(echo ${GITHUB_REPOSITORY} | cut -d'/' -f2)"
+WORKFLOW_FILENAME="$(echo ${GITHUB_WORKFLOW_REF} | cut -d'/' -f5- | cut -d'@' -f1)"
+PACKAGE_NAMES=()
+while IFS='' read -r line; do PACKAGE_NAMES+=("$line"); done < <(python /app/print-pkg-names.py "${INPUT_PACKAGES_DIR%%/}")
+
 PASSWORD_DEPRECATION_NUDGE="::error title=Password-based uploads disabled::\
 As of 2024, PyPI requires all users to enable Two-Factor \
 Authentication. This consequently requires all users to switch \
@@ -64,6 +69,27 @@ The workflow was run with 'attestations: true' input, but the specified \
 repository URL does not support PEP 740 attestations. As a result, the \
 attestations input is ignored."
 
+MAGIC_LINK_MESSAGE="::warning title=Create a Trusted Publisher::\
+A new Trusted Publisher for the currently running publishing workflow can be created \
+by accessing the following link(s) while logged-in as an owner of the package(s):"
+
+if [[ ! "${INPUT_REPOSITORY_URL}" =~ pypi\.org || ${#PACKAGE_NAMES[@]} -eq 0 ]] ; then
+    TRUSTED_PUBLISHING_MAGIC_LINK_NUDGE=""
+else
+    if [[ "${INPUT_REPOSITORY_URL}" =~ test\.pypi\.org ]] ; then
+        INDEX_URL="https://test.pypi.org"
+    else
+        INDEX_URL="https://pypi.org"
+    fi
+    ALL_LINKS=""
+    for PACKAGE_NAME in "${PACKAGE_NAMES[@]}"; do
+        LINK="- ${INDEX_URL}/manage/project/${PACKAGE_NAME}/settings/publishing/?provider=github&owner=${GITHUB_REPOSITORY_OWNER}&repository=${REPOSITORY_NAME}&workflow_filename=${WORKFLOW_FILENAME}"
+        ALL_LINKS+="$LINK"$'\n'
+    done
+    TRUSTED_PUBLISHING_MAGIC_LINK_NUDGE="${MAGIC_LINK_MESSAGE}"$'\n'"${ALL_LINKS}"
+    echo "${MAGIC_LINK_MESSAGE}" >> $GITHUB_STEP_SUMMARY
+fi
+
 [[ "${INPUT_USER}" == "__token__" && -z "${INPUT_PASSWORD}" ]] \
     && TRUSTED_PUBLISHING=true || TRUSTED_PUBLISHING=false
 
@@ -96,6 +122,7 @@ elif [[ "${INPUT_USER}" == '__token__' ]]; then
 
     if [[ "${INPUT_REPOSITORY_URL}" =~ pypi\.org ]]; then
         echo "${TRUSTED_PUBLISHING_NUDGE}"
+        echo "${TRUSTED_PUBLISHING_MAGIC_LINK_NUDGE}"
     fi
 else
     echo \
@@ -105,6 +132,7 @@ else
     if [[ "${INPUT_REPOSITORY_URL}" =~ pypi\.org ]]; then
         echo "${PASSWORD_DEPRECATION_NUDGE}"
         echo "${TRUSTED_PUBLISHING_NUDGE}"
+        echo "${TRUSTED_PUBLISHING_MAGIC_LINK_NUDGE}"
         exit 1
     fi
 fi