commit cf691649a13a95a1963a3a391f5afa35323aa7ec Author: Sven Carstensen Date: Fri Jul 17 11:20:58 2026 +0200 PDF Service: ZUGFeRD-REST-API als eigenständiges Projekt (aus dem PDF Tool herausgelöst) Endpoints /api/invoices/sign und /api/invoices/validate; Eingabe ist immer ein fertiges Rechnungs-PDF, Template-Rendering verbleibt im PDF Tool. Co-Authored-By: Claude Fable 5 diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..547c1f8 --- /dev/null +++ b/.gitignore @@ -0,0 +1,7 @@ +# Build +target/ + +# IDE / OS +.DS_Store +.vscode/ +.idea/ diff --git a/.mvn/wrapper/maven-wrapper.properties b/.mvn/wrapper/maven-wrapper.properties new file mode 100644 index 0000000..c0bcafe --- /dev/null +++ b/.mvn/wrapper/maven-wrapper.properties @@ -0,0 +1,3 @@ +wrapperVersion=3.3.4 +distributionType=only-script +distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.11/apache-maven-3.9.11-bin.zip diff --git a/README.md b/README.md new file mode 100644 index 0000000..f2e6545 --- /dev/null +++ b/README.md @@ -0,0 +1,41 @@ +# PDF Service + +REST-API zur Erzeugung und Prüfung rechtskonformer ZUGFeRD-E-Rechnungen +(PDF/A-3 mit eingebettetem EN16931-XML, [Mustangproject](https://www.mustangproject.org/)). + +Aus dem PDF Tool herausgelöst: Das PDF Tool enthält die Weboberfläche +(Rechnungserzeugung aus Templates), dieser Service stellt ausschließlich die +API bereit — Eingabe ist immer ein fertiges Rechnungs-PDF. + +## Starten + +```bash +./mvnw spring-boot:run +``` + +Der Service läuft standardmäßig auf Port `8084` (überschreibbar per `SERVER_PORT`). + +## Endpoints + +### PDF in ZUGFeRD-Rechnung umwandeln + +```bash +curl -X POST http://localhost:8084/api/invoices/sign \ + -F "file=@rechnung.pdf" \ + -F "metadata=@metadata.json;type=application/json" \ + -o rechnung-zugferd.zip +``` + +Antwort: ZIP mit ZUGFeRD-PDF und Mustang-Prüfbericht (`validation-report.xml`). +HTTP 200 bei gültiger, HTTP 422 bei ungültiger Rechnung (ZIP in beiden Fällen); +der Header `X-Zugferd-Valid` enthält das Prüfergebnis. + +### ZUGFeRD-Rechnung validieren + +```bash +curl -X POST http://localhost:8084/api/invoices/validate \ + -F "file=@rechnung-zugferd.pdf" +``` + +Antwort: Mustang-Prüfbericht als XML; HTTP 200 bei gültiger, HTTP 422 bei +ungültiger Rechnung. diff --git a/mvnw b/mvnw new file mode 100755 index 0000000..bd8896b --- /dev/null +++ b/mvnw @@ -0,0 +1,295 @@ +#!/bin/sh +# ---------------------------------------------------------------------------- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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 +# +# http://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. +# ---------------------------------------------------------------------------- + +# ---------------------------------------------------------------------------- +# Apache Maven Wrapper startup batch script, version 3.3.4 +# +# Optional ENV vars +# ----------------- +# JAVA_HOME - location of a JDK home dir, required when download maven via java source +# MVNW_REPOURL - repo url base for downloading maven distribution +# MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven +# MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output +# ---------------------------------------------------------------------------- + +set -euf +[ "${MVNW_VERBOSE-}" != debug ] || set -x + +# OS specific support. +native_path() { printf %s\\n "$1"; } +case "$(uname)" in +CYGWIN* | MINGW*) + [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")" + native_path() { cygpath --path --windows "$1"; } + ;; +esac + +# set JAVACMD and JAVACCMD +set_java_home() { + # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched + if [ -n "${JAVA_HOME-}" ]; then + if [ -x "$JAVA_HOME/jre/sh/java" ]; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD="$JAVA_HOME/jre/sh/java" + JAVACCMD="$JAVA_HOME/jre/sh/javac" + else + JAVACMD="$JAVA_HOME/bin/java" + JAVACCMD="$JAVA_HOME/bin/javac" + + if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then + echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2 + echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2 + return 1 + fi + fi + else + JAVACMD="$( + 'set' +e + 'unset' -f command 2>/dev/null + 'command' -v java + )" || : + JAVACCMD="$( + 'set' +e + 'unset' -f command 2>/dev/null + 'command' -v javac + )" || : + + if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then + echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2 + return 1 + fi + fi +} + +# hash string like Java String::hashCode +hash_string() { + str="${1:-}" h=0 + while [ -n "$str" ]; do + char="${str%"${str#?}"}" + h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296)) + str="${str#?}" + done + printf %x\\n $h +} + +verbose() { :; } +[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; } + +die() { + printf %s\\n "$1" >&2 + exit 1 +} + +trim() { + # MWRAPPER-139: + # Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds. + # Needed for removing poorly interpreted newline sequences when running in more + # exotic environments such as mingw bash on Windows. + printf "%s" "${1}" | tr -d '[:space:]' +} + +scriptDir="$(dirname "$0")" +scriptName="$(basename "$0")" + +# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties +while IFS="=" read -r key value; do + case "${key-}" in + distributionUrl) distributionUrl=$(trim "${value-}") ;; + distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;; + esac +done <"$scriptDir/.mvn/wrapper/maven-wrapper.properties" +[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties" + +case "${distributionUrl##*/}" in +maven-mvnd-*bin.*) + MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ + case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in + *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;; + :Darwin*x86_64) distributionPlatform=darwin-amd64 ;; + :Darwin*arm64) distributionPlatform=darwin-aarch64 ;; + :Linux*x86_64*) distributionPlatform=linux-amd64 ;; + *) + echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2 + distributionPlatform=linux-amd64 + ;; + esac + distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip" + ;; +maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;; +*) MVN_CMD="mvn${scriptName#mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;; +esac + +# apply MVNW_REPOURL and calculate MAVEN_HOME +# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/ +[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}" +distributionUrlName="${distributionUrl##*/}" +distributionUrlNameMain="${distributionUrlName%.*}" +distributionUrlNameMain="${distributionUrlNameMain%-bin}" +MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}" +MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")" + +exec_maven() { + unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || : + exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD" +} + +if [ -d "$MAVEN_HOME" ]; then + verbose "found existing MAVEN_HOME at $MAVEN_HOME" + exec_maven "$@" +fi + +case "${distributionUrl-}" in +*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;; +*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;; +esac + +# prepare tmp dir +if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then + clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; } + trap clean HUP INT TERM EXIT +else + die "cannot create temp dir" +fi + +mkdir -p -- "${MAVEN_HOME%/*}" + +# Download and Install Apache Maven +verbose "Couldn't find MAVEN_HOME, downloading and installing it ..." +verbose "Downloading from: $distributionUrl" +verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName" + +# select .zip or .tar.gz +if ! command -v unzip >/dev/null; then + distributionUrl="${distributionUrl%.zip}.tar.gz" + distributionUrlName="${distributionUrl##*/}" +fi + +# verbose opt +__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR='' +[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v + +# normalize http auth +case "${MVNW_PASSWORD:+has-password}" in +'') MVNW_USERNAME='' MVNW_PASSWORD='' ;; +has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;; +esac + +if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then + verbose "Found wget ... using wget" + wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl" +elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then + verbose "Found curl ... using curl" + curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl" +elif set_java_home; then + verbose "Falling back to use Java to download" + javaSource="$TMP_DOWNLOAD_DIR/Downloader.java" + targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName" + cat >"$javaSource" <<-END + public class Downloader extends java.net.Authenticator + { + protected java.net.PasswordAuthentication getPasswordAuthentication() + { + return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() ); + } + public static void main( String[] args ) throws Exception + { + setDefault( new Downloader() ); + java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() ); + } + } + END + # For Cygwin/MinGW, switch paths to Windows format before running javac and java + verbose " - Compiling Downloader.java ..." + "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java" + verbose " - Running Downloader.java ..." + "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")" +fi + +# If specified, validate the SHA-256 sum of the Maven distribution zip file +if [ -n "${distributionSha256Sum-}" ]; then + distributionSha256Result=false + if [ "$MVN_CMD" = mvnd.sh ]; then + echo "Checksum validation is not supported for maven-mvnd." >&2 + echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2 + exit 1 + elif command -v sha256sum >/dev/null; then + if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c - >/dev/null 2>&1; then + distributionSha256Result=true + fi + elif command -v shasum >/dev/null; then + if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then + distributionSha256Result=true + fi + else + echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2 + echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2 + exit 1 + fi + if [ $distributionSha256Result = false ]; then + echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2 + echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2 + exit 1 + fi +fi + +# unzip and move +if command -v unzip >/dev/null; then + unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip" +else + tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar" +fi + +# Find the actual extracted directory name (handles snapshots where filename != directory name) +actualDistributionDir="" + +# First try the expected directory name (for regular distributions) +if [ -d "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" ]; then + if [ -f "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/bin/$MVN_CMD" ]; then + actualDistributionDir="$distributionUrlNameMain" + fi +fi + +# If not found, search for any directory with the Maven executable (for snapshots) +if [ -z "$actualDistributionDir" ]; then + # enable globbing to iterate over items + set +f + for dir in "$TMP_DOWNLOAD_DIR"/*; do + if [ -d "$dir" ]; then + if [ -f "$dir/bin/$MVN_CMD" ]; then + actualDistributionDir="$(basename "$dir")" + break + fi + fi + done + set -f +fi + +if [ -z "$actualDistributionDir" ]; then + verbose "Contents of $TMP_DOWNLOAD_DIR:" + verbose "$(ls -la "$TMP_DOWNLOAD_DIR")" + die "Could not find Maven distribution directory in extracted archive" +fi + +verbose "Found extracted Maven distribution directory: $actualDistributionDir" +printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$actualDistributionDir/mvnw.url" +mv -- "$TMP_DOWNLOAD_DIR/$actualDistributionDir" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME" + +clean || : +exec_maven "$@" diff --git a/mvnw.cmd b/mvnw.cmd new file mode 100644 index 0000000..92450f9 --- /dev/null +++ b/mvnw.cmd @@ -0,0 +1,189 @@ +<# : batch portion +@REM ---------------------------------------------------------------------------- +@REM Licensed to the Apache Software Foundation (ASF) under one +@REM or more contributor license agreements. See the NOTICE file +@REM distributed with this work for additional information +@REM regarding copyright ownership. The ASF licenses this file +@REM to you under the Apache License, Version 2.0 (the +@REM "License"); you may not use this file except in compliance +@REM with the License. You may obtain a copy of the License at +@REM +@REM http://www.apache.org/licenses/LICENSE-2.0 +@REM +@REM Unless required by applicable law or agreed to in writing, +@REM software distributed under the License is distributed on an +@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +@REM KIND, either express or implied. See the License for the +@REM specific language governing permissions and limitations +@REM under the License. +@REM ---------------------------------------------------------------------------- + +@REM ---------------------------------------------------------------------------- +@REM Apache Maven Wrapper startup batch script, version 3.3.4 +@REM +@REM Optional ENV vars +@REM MVNW_REPOURL - repo url base for downloading maven distribution +@REM MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven +@REM MVNW_VERBOSE - true: enable verbose log; others: silence the output +@REM ---------------------------------------------------------------------------- + +@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0) +@SET __MVNW_CMD__= +@SET __MVNW_ERROR__= +@SET __MVNW_PSMODULEP_SAVE=%PSModulePath% +@SET PSModulePath= +@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @( + IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B) +) +@SET PSModulePath=%__MVNW_PSMODULEP_SAVE% +@SET __MVNW_PSMODULEP_SAVE= +@SET __MVNW_ARG0_NAME__= +@SET MVNW_USERNAME= +@SET MVNW_PASSWORD= +@IF NOT "%__MVNW_CMD__%"=="" ("%__MVNW_CMD__%" %*) +@echo Cannot start maven from wrapper >&2 && exit /b 1 +@GOTO :EOF +: end batch / begin powershell #> + +$ErrorActionPreference = "Stop" +if ($env:MVNW_VERBOSE -eq "true") { + $VerbosePreference = "Continue" +} + +# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties +$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl +if (!$distributionUrl) { + Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties" +} + +switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) { + "maven-mvnd-*" { + $USE_MVND = $true + $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip" + $MVN_CMD = "mvnd.cmd" + break + } + default { + $USE_MVND = $false + $MVN_CMD = $script -replace '^mvnw','mvn' + break + } +} + +# apply MVNW_REPOURL and calculate MAVEN_HOME +# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/ +if ($env:MVNW_REPOURL) { + $MVNW_REPO_PATTERN = if ($USE_MVND -eq $False) { "/org/apache/maven/" } else { "/maven/mvnd/" } + $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace "^.*$MVNW_REPO_PATTERN",'')" +} +$distributionUrlName = $distributionUrl -replace '^.*/','' +$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$','' + +$MAVEN_M2_PATH = "$HOME/.m2" +if ($env:MAVEN_USER_HOME) { + $MAVEN_M2_PATH = "$env:MAVEN_USER_HOME" +} + +if (-not (Test-Path -Path $MAVEN_M2_PATH)) { + New-Item -Path $MAVEN_M2_PATH -ItemType Directory | Out-Null +} + +$MAVEN_WRAPPER_DISTS = $null +if ((Get-Item $MAVEN_M2_PATH).Target[0] -eq $null) { + $MAVEN_WRAPPER_DISTS = "$MAVEN_M2_PATH/wrapper/dists" +} else { + $MAVEN_WRAPPER_DISTS = (Get-Item $MAVEN_M2_PATH).Target[0] + "/wrapper/dists" +} + +$MAVEN_HOME_PARENT = "$MAVEN_WRAPPER_DISTS/$distributionUrlNameMain" +$MAVEN_HOME_NAME = ([System.Security.Cryptography.SHA256]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join '' +$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME" + +if (Test-Path -Path "$MAVEN_HOME" -PathType Container) { + Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME" + Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD" + exit $? +} + +if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) { + Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl" +} + +# prepare tmp dir +$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile +$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir" +$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null +trap { + if ($TMP_DOWNLOAD_DIR.Exists) { + try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null } + catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" } + } +} + +New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null + +# Download and Install Apache Maven +Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..." +Write-Verbose "Downloading from: $distributionUrl" +Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName" + +$webclient = New-Object System.Net.WebClient +if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) { + $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD) +} +[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 +$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null + +# If specified, validate the SHA-256 sum of the Maven distribution zip file +$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum +if ($distributionSha256Sum) { + if ($USE_MVND) { + Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." + } + Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash + if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) { + Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property." + } +} + +# unzip and move +Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null + +# Find the actual extracted directory name (handles snapshots where filename != directory name) +$actualDistributionDir = "" + +# First try the expected directory name (for regular distributions) +$expectedPath = Join-Path "$TMP_DOWNLOAD_DIR" "$distributionUrlNameMain" +$expectedMvnPath = Join-Path "$expectedPath" "bin/$MVN_CMD" +if ((Test-Path -Path $expectedPath -PathType Container) -and (Test-Path -Path $expectedMvnPath -PathType Leaf)) { + $actualDistributionDir = $distributionUrlNameMain +} + +# If not found, search for any directory with the Maven executable (for snapshots) +if (!$actualDistributionDir) { + Get-ChildItem -Path "$TMP_DOWNLOAD_DIR" -Directory | ForEach-Object { + $testPath = Join-Path $_.FullName "bin/$MVN_CMD" + if (Test-Path -Path $testPath -PathType Leaf) { + $actualDistributionDir = $_.Name + } + } +} + +if (!$actualDistributionDir) { + Write-Error "Could not find Maven distribution directory in extracted archive" +} + +Write-Verbose "Found extracted Maven distribution directory: $actualDistributionDir" +Rename-Item -Path "$TMP_DOWNLOAD_DIR/$actualDistributionDir" -NewName $MAVEN_HOME_NAME | Out-Null +try { + Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null +} catch { + if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) { + Write-Error "fail to move MAVEN_HOME" + } +} finally { + try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null } + catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" } +} + +Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD" diff --git a/pom.xml b/pom.xml new file mode 100644 index 0000000..2c395b9 --- /dev/null +++ b/pom.xml @@ -0,0 +1,62 @@ + + + 4.0.0 + + + org.springframework.boot + spring-boot-starter-parent + 3.5.3 + + + + de.assecutor + pdf-service + 0.9.0 + pdf-service + REST-API zur Erzeugung und Prüfung rechtskonformer ZUGFeRD-E-Rechnungen + + + 21 + 2.24.0 + + + + + org.springframework.boot + spring-boot-starter-web + + + org.springframework.boot + spring-boot-starter-validation + + + + + org.mustangproject + library + ${mustang.version} + + + org.mustangproject + validator + ${mustang.version} + + + + org.springframework.boot + spring-boot-starter-test + test + + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + diff --git a/src/main/java/de/assecutor/pdfservice/PdfServiceApplication.java b/src/main/java/de/assecutor/pdfservice/PdfServiceApplication.java new file mode 100644 index 0000000..67d6de7 --- /dev/null +++ b/src/main/java/de/assecutor/pdfservice/PdfServiceApplication.java @@ -0,0 +1,12 @@ +package de.assecutor.pdfservice; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class PdfServiceApplication { + + public static void main(String[] args) { + SpringApplication.run(PdfServiceApplication.class, args); + } +} diff --git a/src/main/java/de/assecutor/pdfservice/api/InvoiceSigningController.java b/src/main/java/de/assecutor/pdfservice/api/InvoiceSigningController.java new file mode 100644 index 0000000..6245d89 --- /dev/null +++ b/src/main/java/de/assecutor/pdfservice/api/InvoiceSigningController.java @@ -0,0 +1,122 @@ +package de.assecutor.pdfservice.api; + +import com.fasterxml.jackson.databind.ObjectMapper; +import de.assecutor.pdfservice.invoice.InvoiceMetadata; +import de.assecutor.pdfservice.zugferd.ZugferdConversionException; +import de.assecutor.pdfservice.zugferd.ZugferdResult; +import de.assecutor.pdfservice.zugferd.ZugferdService; +import de.assecutor.pdfservice.zugferd.ZugferdValidationService; +import jakarta.validation.ConstraintViolation; +import jakarta.validation.Validator; +import org.springframework.http.ContentDisposition; +import org.springframework.http.HttpHeaders; +import org.springframework.http.HttpStatus; +import org.springframework.http.MediaType; +import org.springframework.http.ResponseEntity; +import org.springframework.web.bind.annotation.ExceptionHandler; +import org.springframework.web.bind.annotation.PostMapping; +import org.springframework.web.bind.annotation.RequestMapping; +import org.springframework.web.bind.annotation.RequestPart; +import org.springframework.web.bind.annotation.RestController; +import org.springframework.web.multipart.MultipartFile; + +import java.io.IOException; +import java.util.Map; +import java.util.Set; +import java.util.stream.Collectors; + +/** + * REST-API zur Erzeugung und Prüfung rechtskonformer ZUGFeRD-E-Rechnungen. + * + * 
+ * curl -X POST http://localhost:8083/api/invoices/sign \
+ *   -F "file=@rechnung.pdf" \
+ *   -F "metadata=@metadata.json;type=application/json" \
+ *   -o rechnung-zugferd.zip
+ *
+ * curl -X POST http://localhost:8083/api/invoices/validate \
+ *   -F "file=@rechnung-zugferd.pdf"
+ *
+ */ +@RestController +@RequestMapping("/api/invoices") +public class InvoiceSigningController { + + /** Response-Header mit dem Ergebnis der Mustang-Validierung (true/false). */ + public static final String VALIDATION_HEADER = "X-Zugferd-Valid"; + + private final ZugferdService zugferdService; + private final ZugferdValidationService validationService; + private final ObjectMapper objectMapper; + private final Validator validator; + + public InvoiceSigningController(ZugferdService zugferdService, + ZugferdValidationService validationService, + ObjectMapper objectMapper, + Validator validator) { + this.zugferdService = zugferdService; + this.validationService = validationService; + this.objectMapper = objectMapper; + this.validator = validator; + } + + /** + * Erzeugt aus PDF und Metadaten eine ZUGFeRD-Rechnung als ZIP (PDF + Prüfbericht). + * HTTP 200 bei gültiger, HTTP 422 bei ungültiger Rechnung; das ZIP wird in + * beiden Fällen geliefert. + */ + @PostMapping(value = "/sign", consumes = MediaType.MULTIPART_FORM_DATA_VALUE) + public ResponseEntity sign(@RequestPart("file") MultipartFile file, + @RequestPart("metadata") String metadataJson) throws IOException { + InvoiceMetadata metadata = parseAndValidate(metadataJson); + ZugferdResult result = zugferdService.createZugferdZip(file.getBytes(), metadata); + + HttpHeaders headers = new HttpHeaders(); + headers.setContentType(MediaType.parseMediaType("application/zip")); + headers.setContentDisposition(ContentDisposition.attachment().filename(result.zipFileName()).build()); + headers.set(VALIDATION_HEADER, String.valueOf(result.valid())); + return new ResponseEntity<>(result.zip(), headers, + result.valid() ? HttpStatus.OK : HttpStatus.UNPROCESSABLE_ENTITY); + } + + /** + * Validiert eine bestehende ZUGFeRD-Rechnung (PDF oder Factur-X-XML). + * Antwort ist der Mustang-Prüfbericht als XML; HTTP 200 bei gültiger, + * HTTP 422 bei ungültiger Rechnung. + */ + @PostMapping(value = "/validate", consumes = MediaType.MULTIPART_FORM_DATA_VALUE, + produces = MediaType.APPLICATION_XML_VALUE) + public ResponseEntity validate(@RequestPart("file") MultipartFile file) throws IOException { + ZugferdValidationService.ValidationResult result = + validationService.validate(file.getBytes(), file.getOriginalFilename()); + + HttpHeaders headers = new HttpHeaders(); + headers.setContentType(MediaType.APPLICATION_XML); + headers.set(VALIDATION_HEADER, String.valueOf(result.valid())); + return new ResponseEntity<>(result.reportXml(), headers, + result.valid() ? HttpStatus.OK : HttpStatus.UNPROCESSABLE_ENTITY); + } + + private InvoiceMetadata parseAndValidate(String metadataJson) { + InvoiceMetadata metadata; + try { + metadata = objectMapper.readValue(metadataJson, InvoiceMetadata.class); + } catch (IOException e) { + throw new ZugferdConversionException("Metadaten sind kein gültiges JSON: " + e.getMessage(), e); + } + Set> violations = validator.validate(metadata); + if (!violations.isEmpty()) { + String details = violations.stream() + .map(v -> v.getPropertyPath() + ": " + v.getMessage()) + .sorted() + .collect(Collectors.joining("; ")); + throw new ZugferdConversionException("Metadaten unvollständig: " + details); + } + return metadata; + } + + @ExceptionHandler(ZugferdConversionException.class) + public ResponseEntity> handleConversionError(ZugferdConversionException e) { + return ResponseEntity.badRequest().body(Map.of("error", e.getMessage())); + } +} diff --git a/src/main/java/de/assecutor/pdfservice/invoice/InvoiceMetadata.java b/src/main/java/de/assecutor/pdfservice/invoice/InvoiceMetadata.java new file mode 100644 index 0000000..83bc978 --- /dev/null +++ b/src/main/java/de/assecutor/pdfservice/invoice/InvoiceMetadata.java @@ -0,0 +1,56 @@ +package de.assecutor.pdfservice.invoice; + +import jakarta.validation.Valid; +import jakarta.validation.constraints.Email; +import jakarta.validation.constraints.NotBlank; +import jakarta.validation.constraints.NotEmpty; +import jakarta.validation.constraints.NotNull; + +import java.math.BigDecimal; +import java.time.LocalDate; +import java.util.List; + +/** + * Rechnungsdaten, die als EN16931-XML (Profil EN 16931 / "Comfort") in das + * PDF/A-3 eingebettet werden. Ohne diese strukturierten Daten ist eine + * ZUGFeRD-Rechnung nicht rechtskonform. + */ +public record InvoiceMetadata( + @NotBlank String invoiceNumber, + @NotNull LocalDate issueDate, + LocalDate deliveryDate, + LocalDate dueDate, + String currency, + String paymentTerms, + // Käuferreferenz bzw. Leitweg-ID (BT-10) — für Rechnungen an Behörden erforderlich + String buyerReference, + // Zahlungsverbindung des Rechnungsstellers (BG-16, SEPA-Überweisung) + String iban, + String bic, + @NotNull @Valid Party sender, + @NotNull @Valid Party recipient, + @NotEmpty @Valid List items +) { + + public record Party( + @NotBlank String name, + @NotBlank String street, + @NotBlank String zip, + @NotBlank String city, + @NotBlank String countryCode, + @ValidVatId String vatId, + // Elektronische Adresse (BT-34/BT-49) — von PEPPOL-EN16931 gefordert + @NotBlank @Email String email, + // Telefon des Verkäufer-Kontakts (BR-DE-6); für den Empfänger optional + String phone + ) { + } + + public record LineItem( + @NotBlank String description, + @NotNull BigDecimal quantity, + @NotNull BigDecimal unitPriceNet, + @NotNull BigDecimal vatPercent + ) { + } +} diff --git a/src/main/java/de/assecutor/pdfservice/invoice/ValidVatId.java b/src/main/java/de/assecutor/pdfservice/invoice/ValidVatId.java new file mode 100644 index 0000000..c20fa16 --- /dev/null +++ b/src/main/java/de/assecutor/pdfservice/invoice/ValidVatId.java @@ -0,0 +1,45 @@ +package de.assecutor.pdfservice.invoice; + +import jakarta.validation.Constraint; +import jakarta.validation.ConstraintValidator; +import jakarta.validation.ConstraintValidatorContext; +import jakarta.validation.Payload; + +import java.lang.annotation.ElementType; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.lang.annotation.Target; +import java.util.Optional; + +/** + * Bean-Validation-Constraint für USt-IdNrn. Leere Werte gelten als gültig — + * ob das Feld Pflicht ist, regeln {@code @NotBlank} bzw. die UI. + */ +@Target({ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER, ElementType.RECORD_COMPONENT}) +@Retention(RetentionPolicy.RUNTIME) +@Constraint(validatedBy = ValidVatId.Validator.class) +public @interface ValidVatId { + + String message() default "ungültige USt-IdNr."; + + Class[] groups() default {}; + + Class[] payload() default {}; + + class Validator implements ConstraintValidator { + + @Override + public boolean isValid(String value, ConstraintValidatorContext context) { + if (value == null || value.isBlank()) { + return true; + } + Optional error = VatIdValidator.validate(value); + if (error.isPresent()) { + context.disableDefaultConstraintViolation(); + context.buildConstraintViolationWithTemplate(error.get()).addConstraintViolation(); + return false; + } + return true; + } + } +} diff --git a/src/main/java/de/assecutor/pdfservice/invoice/VatIdValidator.java b/src/main/java/de/assecutor/pdfservice/invoice/VatIdValidator.java new file mode 100644 index 0000000..9de7199 --- /dev/null +++ b/src/main/java/de/assecutor/pdfservice/invoice/VatIdValidator.java @@ -0,0 +1,106 @@ +package de.assecutor.pdfservice.invoice; + +import java.util.Map; +import java.util.Optional; +import java.util.regex.Pattern; + +/** + * Prüft Umsatzsteuer-Identifikationsnummern (USt-IdNr.). + * + * Geprüft werden das länderspezifische Format aller EU-Mitgliedsstaaten + * (plus XI für Nordirland) sowie bei deutschen IdNrn. zusätzlich die + * Prüfziffer nach ISO 7064, MOD 11,10 (§ 27a UStG). + */ +public final class VatIdValidator { + + /** Format des nationalen Teils (ohne Länderpräfix) je EU-Land. */ + private static final Map EU_FORMATS = Map.ofEntries( + Map.entry("AT", Pattern.compile("U\\d{8}")), + Map.entry("BE", Pattern.compile("[01]\\d{9}")), + Map.entry("BG", Pattern.compile("\\d{9,10}")), + Map.entry("CY", Pattern.compile("\\d{8}[A-Z]")), + Map.entry("CZ", Pattern.compile("\\d{8,10}")), + Map.entry("DE", Pattern.compile("[1-9]\\d{8}")), + Map.entry("DK", Pattern.compile("\\d{8}")), + Map.entry("EE", Pattern.compile("\\d{9}")), + Map.entry("EL", Pattern.compile("\\d{9}")), + Map.entry("ES", Pattern.compile("[A-Z0-9]\\d{7}[A-Z0-9]")), + Map.entry("FI", Pattern.compile("\\d{8}")), + Map.entry("FR", Pattern.compile("[A-Z0-9]{2}\\d{9}")), + Map.entry("HR", Pattern.compile("\\d{11}")), + Map.entry("HU", Pattern.compile("\\d{8}")), + Map.entry("IE", Pattern.compile("\\d{7}[A-W][A-I]?|\\d[A-Z+*]\\d{5}[A-W]")), + Map.entry("IT", Pattern.compile("\\d{11}")), + Map.entry("LT", Pattern.compile("\\d{9}|\\d{12}")), + Map.entry("LU", Pattern.compile("\\d{8}")), + Map.entry("LV", Pattern.compile("\\d{11}")), + Map.entry("MT", Pattern.compile("\\d{8}")), + Map.entry("NL", Pattern.compile("\\d{9}B\\d{2}")), + Map.entry("PL", Pattern.compile("\\d{10}")), + Map.entry("PT", Pattern.compile("\\d{9}")), + Map.entry("RO", Pattern.compile("\\d{2,10}")), + Map.entry("SE", Pattern.compile("\\d{10}01")), + Map.entry("SI", Pattern.compile("\\d{8}")), + Map.entry("SK", Pattern.compile("\\d{10}")), + Map.entry("XI", Pattern.compile("\\d{9}(\\d{3})?")) + ); + + private VatIdValidator() { + } + + /** + * @return leeres Optional, wenn die USt-IdNr. gültig ist, + * sonst eine deutschsprachige Fehlermeldung. + */ + public static Optional validate(String vatId) { + if (vatId == null || vatId.isBlank()) { + return Optional.of("USt-IdNr. fehlt."); + } + String normalized = normalize(vatId); + if (normalized.length() < 4 + || !Character.isLetter(normalized.charAt(0)) + || !Character.isLetter(normalized.charAt(1))) { + return Optional.of("USt-IdNr. muss mit einem Länderpräfix beginnen, z. B. DE."); + } + String country = normalized.substring(0, 2); + String body = normalized.substring(2); + + Pattern format = EU_FORMATS.get(country); + if (format == null) { + return Optional.of("Unbekanntes Länderpräfix \"" + country + "\"."); + } + if (!format.matcher(body).matches()) { + return Optional.of("USt-IdNr. entspricht nicht dem Format für " + country + "."); + } + if ("DE".equals(country) && !checkDigitValidDe(body)) { + return Optional.of("Prüfziffer der deutschen USt-IdNr. ist ungültig."); + } + return Optional.empty(); + } + + public static boolean isValid(String vatId) { + return validate(vatId).isEmpty(); + } + + /** Entfernt Leerzeichen, Punkte und Bindestriche und wandelt in Großbuchstaben um. */ + public static String normalize(String vatId) { + return vatId.replaceAll("[\\s.\\-]", "").toUpperCase(); + } + + /** Prüfziffernverfahren ISO 7064, MOD 11,10 für deutsche USt-IdNrn. */ + private static boolean checkDigitValidDe(String digits) { + int product = 10; + for (int i = 0; i < 8; i++) { + int sum = (Character.getNumericValue(digits.charAt(i)) + product) % 10; + if (sum == 0) { + sum = 10; + } + product = (2 * sum) % 11; + } + int checkDigit = 11 - product; + if (checkDigit == 10) { + checkDigit = 0; + } + return checkDigit == Character.getNumericValue(digits.charAt(8)); + } +} diff --git a/src/main/java/de/assecutor/pdfservice/zugferd/ZugferdConversionException.java b/src/main/java/de/assecutor/pdfservice/zugferd/ZugferdConversionException.java new file mode 100644 index 0000000..5802cad --- /dev/null +++ b/src/main/java/de/assecutor/pdfservice/zugferd/ZugferdConversionException.java @@ -0,0 +1,12 @@ +package de.assecutor.pdfservice.zugferd; + +public class ZugferdConversionException extends RuntimeException { + + public ZugferdConversionException(String message) { + super(message); + } + + public ZugferdConversionException(String message, Throwable cause) { + super(message, cause); + } +} diff --git a/src/main/java/de/assecutor/pdfservice/zugferd/ZugferdResult.java b/src/main/java/de/assecutor/pdfservice/zugferd/ZugferdResult.java new file mode 100644 index 0000000..412d2df --- /dev/null +++ b/src/main/java/de/assecutor/pdfservice/zugferd/ZugferdResult.java @@ -0,0 +1,8 @@ +package de.assecutor.pdfservice.zugferd; + +/** + * Ergebnis einer ZUGFeRD-Konvertierung: die ZIP-Datei (ZUGFeRD-PDF, Factur-X-XML, + * Prüfbericht) sowie das Ergebnis der Mustang-Validierung. + */ +public record ZugferdResult(byte[] zip, String zipFileName, boolean valid, String validationReport) { +} diff --git a/src/main/java/de/assecutor/pdfservice/zugferd/ZugferdService.java b/src/main/java/de/assecutor/pdfservice/zugferd/ZugferdService.java new file mode 100644 index 0000000..b13936e --- /dev/null +++ b/src/main/java/de/assecutor/pdfservice/zugferd/ZugferdService.java @@ -0,0 +1,242 @@ +package de.assecutor.pdfservice.zugferd; + +import de.assecutor.pdfservice.invoice.InvoiceMetadata; +import org.apache.pdfbox.Loader; +import org.apache.pdfbox.pdmodel.PDDocument; +import org.apache.pdfbox.pdmodel.PDPage; +import org.apache.pdfbox.pdmodel.PDResources; +import org.mustangproject.BankDetails; +import org.mustangproject.Contact; +import org.mustangproject.Invoice; +import org.mustangproject.Item; +import org.mustangproject.Product; +import org.mustangproject.SchemedID; +import org.mustangproject.TradeParty; +import org.mustangproject.ZUGFeRD.IZUGFeRDExporter; +import org.mustangproject.ZUGFeRD.Profiles; +import org.mustangproject.ZUGFeRD.ZUGFeRD2PullProvider; +import org.mustangproject.ZUGFeRD.ZUGFeRDExporterFromA1; +import org.mustangproject.ZUGFeRD.ZUGFeRDExporterFromPDFA; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.stereotype.Service; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.nio.charset.StandardCharsets; +import java.time.LocalDate; +import java.time.ZoneId; +import java.util.Date; +import java.util.zip.ZipEntry; +import java.util.zip.ZipOutputStream; + +/** + * Wandelt ein herkömmliches Rechnungs-PDF in eine rechtskonforme ZUGFeRD-Rechnung + * (PDF/A-3 mit eingebettetem EN16931-XML, Profil EN 16931) um, validiert das + * Ergebnis mit dem Mustang-Validator und verpackt PDF, Factur-X-XML und + * Prüfbericht in eine ZIP-Datei. + */ +@Service +public class ZugferdService { + + private static final Logger log = LoggerFactory.getLogger(ZugferdService.class); + + private static final String PROFILE = "EN16931"; + private static final String PRODUCER = "Assecutor Data Service GmbH Invoice Tool"; + + /** Business Process (BT-23), von PEPPOL-EN16931-R001 gefordert. */ + private static final String BUSINESS_PROCESS = "urn:fdc:peppol.eu:2017:poacc:billing:01:1.0"; + + /** EAS-Schema "EM" = E-Mail-Adresse für die elektronische Adresse (BT-34/BT-49). */ + private static final String EAS_EMAIL = "EM"; + + private final ZugferdValidationService validationService; + + public ZugferdService(ZugferdValidationService validationService) { + this.validationService = validationService; + } + + public ZugferdResult createZugferdZip(byte[] sourcePdf, InvoiceMetadata metadata) { + validatePdf(sourcePdf); + sourcePdf = ensurePageResources(sourcePdf); + Invoice invoice = buildInvoice(metadata); + + byte[] zugferdPdf = embedXmlIntoPdf(sourcePdf, invoice); + byte[] facturXml = generateXml(invoice); + + String baseName = sanitizeFileName(metadata.invoiceNumber()); + String pdfName = baseName + "-zugferd.pdf"; + ZugferdValidationService.ValidationResult validation = validationService.validate(zugferdPdf, pdfName); + + byte[] zip = zip( + pdfName, zugferdPdf, + "factur-x.xml", facturXml, + "validation-report.xml", validation.reportXml().getBytes(StandardCharsets.UTF_8)); + return new ZugferdResult(zip, baseName + ".zip", validation.valid(), validation.reportXml()); + } + + private void validatePdf(byte[] pdf) { + if (pdf == null || pdf.length < 5 + || !"%PDF-".equals(new String(pdf, 0, 5, StandardCharsets.US_ASCII))) { + throw new ZugferdConversionException("Die hochgeladene Datei ist kein gültiges PDF."); + } + } + + /** + * Mustang setzt bei jeder Seite ein Resources-Dictionary voraus und stürzt + * sonst mit einer NullPointerException ab. Seiten ohne Resources (z.B. aus + * manchen PDF-Generatoren) erhalten deshalb vorab ein leeres Dictionary. + */ + private byte[] ensurePageResources(byte[] pdf) { + try (PDDocument doc = Loader.loadPDF(pdf)) { + boolean changed = false; + for (PDPage page : doc.getPages()) { + if (page.getResources() == null) { + page.setResources(new PDResources()); + changed = true; + } + } + if (!changed) { + return pdf; + } + try (ByteArrayOutputStream out = new ByteArrayOutputStream()) { + doc.save(out); + return out.toByteArray(); + } + } catch (IOException e) { + throw new ZugferdConversionException("Das PDF konnte nicht gelesen werden: " + e.getMessage(), e); + } + } + + private Invoice buildInvoice(InvoiceMetadata m) { + LocalDate delivery = m.deliveryDate() != null ? m.deliveryDate() : m.issueDate(); + LocalDate due = m.dueDate() != null ? m.dueDate() : m.issueDate().plusDays(14); + String currency = m.currency() != null && !m.currency().isBlank() ? m.currency() : "EUR"; + + Invoice invoice = new Invoice() + .setDocumentName("Rechnung") + .setBusinessProcessId(BUSINESS_PROCESS) + .setNumber(m.invoiceNumber()) + .setIssueDate(toDate(m.issueDate())) + .setDeliveryDate(toDate(delivery)) + .setDueDate(toDate(due)) + .setCurrency(currency) + .setSender(toSender(m)) + .setRecipient(toTradeParty(m.recipient())); + + if (m.paymentTerms() != null && !m.paymentTerms().isBlank()) { + invoice.setPaymentTermDescription(m.paymentTerms()); + } + if (m.buyerReference() != null && !m.buyerReference().isBlank()) { + // Käuferreferenz / Leitweg-ID (BT-10) + invoice.setReferenceNumber(m.buyerReference().trim()); + } + + for (InvoiceMetadata.LineItem li : m.items()) { + // Einheit "C62" = Stück (UN/ECE Recommendation 20) + Product product = new Product(li.description(), "", "C62", li.vatPercent()); + invoice.addItem(new Item(product, li.unitPriceNet(), li.quantity())); + } + return invoice; + } + + /** Rechnungssteller inkl. Verkäufer-Kontakt (BG-6) und Zahlungsverbindung (BG-16). */ + private TradeParty toSender(InvoiceMetadata m) { + InvoiceMetadata.Party p = m.sender(); + TradeParty party = toTradeParty(p); + party.setContact(new Contact(p.name(), p.phone(), p.email())); + if (m.iban() != null && !m.iban().isBlank()) { + String iban = m.iban().replaceAll("\\s", "").toUpperCase(); + party.addBankDetails(m.bic() != null && !m.bic().isBlank() + ? new BankDetails(iban, m.bic().trim().toUpperCase()) + : new BankDetails(iban)); + } + return party; + } + + private TradeParty toTradeParty(InvoiceMetadata.Party p) { + TradeParty party = new TradeParty(p.name(), p.street(), p.zip(), p.city(), p.countryCode()); + if (p.vatId() != null && !p.vatId().isBlank()) { + party.addVATID(p.vatId()); + } + if (p.email() != null && !p.email().isBlank()) { + party.setEmail(p.email()); + party.addUriUniversalCommunicationID(new SchemedID(EAS_EMAIL, p.email())); + } + return party; + } + + private byte[] embedXmlIntoPdf(byte[] sourcePdf, Invoice invoice) { + try (ByteArrayOutputStream out = new ByteArrayOutputStream(); + IZUGFeRDExporter exporter = loadExporter(sourcePdf)) { + exporter.setProducer(PRODUCER) + .setCreator(PRODUCER) + .setProfile(Profiles.getByName(PROFILE)) + .setTransaction(invoice); + exporter.export(out); + return out.toByteArray(); + } catch (IOException | RuntimeException e) { + // Mustang wirft bei problematischen PDFs auch unchecked Exceptions — + // ohne diesen Catch würde daraus ein HTTP 500 statt einer Fehlermeldung. + throw new ZugferdConversionException( + "Das PDF konnte nicht in eine ZUGFeRD-Rechnung umgewandelt werden: " + e.getMessage(), e); + } + } + + /** + * Versucht zuerst die automatische PDF/A-Erkennung; ist das PDF kein PDF/A + * (der Normalfall bei ERP-Ausdrucken), wird es tolerant als PDF/A-1 + * interpretiert und nach PDF/A-3 konvertiert. + */ + private IZUGFeRDExporter loadExporter(byte[] sourcePdf) throws IOException { + ZUGFeRDExporterFromPDFA exporter = new ZUGFeRDExporterFromPDFA(); + try { + exporter.load(new ByteArrayInputStream(sourcePdf)); + return exporter; + } catch (IOException | IllegalArgumentException e) { + // Nicht exporter.close(): vor erfolgreichem load() hält er keine Ressourcen + // und close() würde eine RuntimeException werfen. + log.info("Eingabe ist kein PDF/A, konvertiere tolerant: {}", e.getMessage()); + ZUGFeRDExporterFromA1 fallback = new ZUGFeRDExporterFromA1(); + fallback.ignorePDFAErrors(); + fallback.load(new ByteArrayInputStream(sourcePdf)); + return fallback; + } + } + + private byte[] generateXml(Invoice invoice) { + ZUGFeRD2PullProvider provider = new ZUGFeRD2PullProvider(); + provider.setProfile(Profiles.getByName(PROFILE)); + provider.generateXML(invoice); + return provider.getXML(); + } + + /** + * Packt die übergebenen Einträge (abwechselnd Dateiname als String und Inhalt + * als byte[]) in eine ZIP-Datei. + */ + private byte[] zip(Object... namesAndContents) { + try (ByteArrayOutputStream bos = new ByteArrayOutputStream(); + ZipOutputStream zos = new ZipOutputStream(bos)) { + for (int i = 0; i < namesAndContents.length; i += 2) { + zos.putNextEntry(new ZipEntry((String) namesAndContents[i])); + zos.write((byte[]) namesAndContents[i + 1]); + zos.closeEntry(); + } + zos.finish(); + return bos.toByteArray(); + } catch (IOException e) { + throw new ZugferdConversionException("ZIP-Datei konnte nicht erstellt werden.", e); + } + } + + private static String sanitizeFileName(String name) { + String cleaned = name.replaceAll("[^A-Za-z0-9._-]", "_"); + return cleaned.isBlank() ? "rechnung" : cleaned; + } + + private static Date toDate(LocalDate date) { + return Date.from(date.atStartOfDay(ZoneId.systemDefault()).toInstant()); + } +} diff --git a/src/main/java/de/assecutor/pdfservice/zugferd/ZugferdValidationService.java b/src/main/java/de/assecutor/pdfservice/zugferd/ZugferdValidationService.java new file mode 100644 index 0000000..ceb5f61 --- /dev/null +++ b/src/main/java/de/assecutor/pdfservice/zugferd/ZugferdValidationService.java @@ -0,0 +1,38 @@ +package de.assecutor.pdfservice.zugferd; + +import org.mustangproject.validator.ZUGFeRDValidator; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.stereotype.Service; + +/** + * Validiert ZUGFeRD-Rechnungen (PDF oder XML) mit dem Mustang-Validator gegen + * XSD-Schema und die EN16931-Schematron-Regeln sowie das PDF gegen PDF/A-3 + * (veraPDF). Liefert das Prüfergebnis samt XML-Prüfbericht. + */ +@Service +public class ZugferdValidationService { + + private static final Logger log = LoggerFactory.getLogger(ZugferdValidationService.class); + + public ValidationResult validate(byte[] content, String fileName) { + try { + // ZUGFeRDValidator hält Zustand pro Prüfung und ist nicht threadsicher, + // daher pro Aufruf eine neue Instanz + ZUGFeRDValidator validator = new ZUGFeRDValidator(); + String report = validator.validate(content, fileName); + boolean valid = validator.wasCompletelyValid(); + if (!valid) { + log.warn("ZUGFeRD-Validierung von {} fehlgeschlagen:\n{}", fileName, report); + } + return new ValidationResult(valid, report); + } catch (RuntimeException e) { + log.error("Validierung von {} nicht durchführbar", fileName, e); + return new ValidationResult(false, + "Validierung nicht durchführbar: " + e.getMessage() + ""); + } + } + + public record ValidationResult(boolean valid, String reportXml) { + } +} diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties new file mode 100644 index 0000000..e0000b0 --- /dev/null +++ b/src/main/resources/application.properties @@ -0,0 +1,5 @@ +spring.application.name=pdf-service +server.port=${SERVER_PORT:8084} + +spring.servlet.multipart.max-file-size=25MB +spring.servlet.multipart.max-request-size=30MB diff --git a/src/test/java/de/assecutor/pdfservice/invoice/VatIdValidatorTest.java b/src/test/java/de/assecutor/pdfservice/invoice/VatIdValidatorTest.java new file mode 100644 index 0000000..29859a0 --- /dev/null +++ b/src/test/java/de/assecutor/pdfservice/invoice/VatIdValidatorTest.java @@ -0,0 +1,48 @@ +package de.assecutor.pdfservice.invoice; + +import org.junit.jupiter.api.Test; +import org.junit.jupiter.params.ParameterizedTest; +import org.junit.jupiter.params.provider.ValueSource; + +import static org.assertj.core.api.Assertions.assertThat; + +class VatIdValidatorTest { + + @ParameterizedTest + @ValueSource(strings = { + "DE261094748", // Assecutor Data Service GmbH + "DE136695976", // gültige Prüfziffer + "de 261 094 748", // Leerzeichen und Kleinschreibung werden normalisiert + "ATU12345678", + "NL123456789B01", + "FRXX123456789" + }) + void accepts_valid_vat_ids(String vatId) { + assertThat(VatIdValidator.validate(vatId)).isEmpty(); + } + + @ParameterizedTest + @ValueSource(strings = { + "DE261094749", // falsche Prüfziffer + "DE12345678", // zu kurz + "DE1234567890", // zu lang + "XX123456789", // unbekanntes Länderpräfix + "123456789", // Länderpräfix fehlt + "ATU1234567", // falsches Format für AT + "DE" // nur Präfix + }) + void rejects_invalid_vat_ids(String vatId) { + assertThat(VatIdValidator.validate(vatId)).isPresent(); + } + + @Test + void rejects_blank_values() { + assertThat(VatIdValidator.validate(null)).isPresent(); + assertThat(VatIdValidator.validate(" ")).isPresent(); + } + + @Test + void normalizes_separators_and_case() { + assertThat(VatIdValidator.normalize("de 261-094.748")).isEqualTo("DE261094748"); + } +} diff --git a/src/test/java/de/assecutor/pdfservice/zugferd/ZugferdServiceTest.java b/src/test/java/de/assecutor/pdfservice/zugferd/ZugferdServiceTest.java new file mode 100644 index 0000000..0876f70 --- /dev/null +++ b/src/test/java/de/assecutor/pdfservice/zugferd/ZugferdServiceTest.java @@ -0,0 +1,133 @@ +package de.assecutor.pdfservice.zugferd; + +import de.assecutor.pdfservice.invoice.InvoiceMetadata; +import org.apache.pdfbox.Loader; +import org.apache.pdfbox.pdmodel.PDDocument; +import org.apache.pdfbox.pdmodel.PDPage; +import org.apache.pdfbox.pdmodel.PDPageContentStream; +import org.apache.pdfbox.pdmodel.font.PDType0Font; +import org.junit.jupiter.api.Test; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.math.BigDecimal; +import java.nio.charset.StandardCharsets; +import java.time.LocalDate; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.zip.ZipEntry; +import java.util.zip.ZipInputStream; + +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertNotNull; +import static org.junit.jupiter.api.Assertions.assertThrows; +import static org.junit.jupiter.api.Assertions.assertTrue; + +class ZugferdServiceTest { + + private final ZugferdService service = new ZugferdService(new ZugferdValidationService()); + + @Test + void createsZipWithZugferdPdfAndFacturXml() throws Exception { + byte[] sourcePdf = createSamplePdf(); + + ZugferdResult result = service.createZugferdZip(sourcePdf, sampleMetadata()); + + assertEquals("RE-2026-0815.zip", result.zipFileName()); + assertTrue(result.valid(), "Mustang-Validierung fehlgeschlagen:\n" + result.validationReport()); + + Map entries = readZip(result.zip()); + assertEquals(3, entries.size()); + byte[] pdf = entries.get("RE-2026-0815-zugferd.pdf"); + byte[] xml = entries.get("factur-x.xml"); + byte[] report = entries.get("validation-report.xml"); + assertNotNull(pdf, "ZUGFeRD-PDF fehlt im ZIP"); + assertNotNull(xml, "Factur-X-XML fehlt im ZIP"); + assertNotNull(report, "Prüfbericht fehlt im ZIP"); + + String xmlText = new String(xml, StandardCharsets.UTF_8); + assertTrue(xmlText.contains("RE-2026-0815"), "Rechnungsnummer fehlt im XML"); + assertTrue(xmlText.contains("CrossIndustryInvoice"), "Kein CII-XML"); + assertTrue(xmlText.contains("urn:cen.eu:en16931:2017"), "EN16931-Profil fehlt"); + + // Das erzeugte PDF muss das XML als eingebettete Datei enthalten + try (PDDocument doc = Loader.loadPDF(pdf)) { + String names = doc.getDocumentCatalog().getNames().getEmbeddedFiles().getNames().keySet().toString(); + assertTrue(names.contains("factur-x.xml"), "factur-x.xml nicht ins PDF eingebettet: " + names); + } + } + + @Test + void convertsPdfWhosePageHasNoResources() throws Exception { + // Mustang 2.17 stürzt ohne Resources-Dictionary mit einer NPE ab — + // der Service muss solche PDFs vorab reparieren. + byte[] sourcePdf; + try (PDDocument doc = new PDDocument(); ByteArrayOutputStream out = new ByteArrayOutputStream()) { + doc.addPage(new PDPage()); + doc.save(out); + sourcePdf = out.toByteArray(); + } + + ZugferdResult result = service.createZugferdZip(sourcePdf, sampleMetadata()); + + assertTrue(result.valid(), "Mustang-Validierung fehlgeschlagen:\n" + result.validationReport()); + } + + @Test + void rejectsNonPdfInput() { + assertThrows(ZugferdConversionException.class, + () -> service.createZugferdZip("kein pdf".getBytes(StandardCharsets.UTF_8), sampleMetadata())); + } + + private static InvoiceMetadata sampleMetadata() { + return new InvoiceMetadata( + "RE-2026-0815", + LocalDate.of(2026, 7, 8), + LocalDate.of(2026, 7, 1), + LocalDate.of(2026, 7, 22), + "EUR", + "Zahlbar innerhalb von 14 Tagen ohne Abzug.", + "KR-2026-042", + "DE75512108001245126199", + null, + new InvoiceMetadata.Party("Assecutor Data Service GmbH", "Gerhart-Hauptmann-Weg 14", + "21502", "Geesthacht", "DE", "DE261094748", "rechnung@example.com", + "+49 40 18 123 771 0"), + new InvoiceMetadata.Party("Kunde AG", "Beispielweg 2", "10115", "Berlin", "DE", null, + "einkauf@example.com", null), + List.of(new InvoiceMetadata.LineItem("Beratungsleistung", BigDecimal.ONE, + new BigDecimal("1500.00"), new BigDecimal("19"))) + ); + } + + private static byte[] createSamplePdf() throws Exception { + try (PDDocument doc = new PDDocument(); ByteArrayOutputStream out = new ByteArrayOutputStream()) { + PDPage page = new PDPage(); + doc.addPage(page); + try (PDPageContentStream cs = new PDPageContentStream(doc, page)) { + // PDF/A verlangt eingebettete Schriften; LiberationSans liegt pdfbox bei + PDType0Font font = PDType0Font.load(doc, PDDocument.class.getResourceAsStream( + "/org/apache/pdfbox/resources/ttf/LiberationSans-Regular.ttf"), true); + cs.beginText(); + cs.setFont(font, 12); + cs.newLineAtOffset(50, 700); + cs.showText("Rechnung RE-2026-0815"); + cs.endText(); + } + doc.save(out); + return out.toByteArray(); + } + } + + private static Map readZip(byte[] zip) throws Exception { + Map entries = new HashMap<>(); + try (ZipInputStream zis = new ZipInputStream(new ByteArrayInputStream(zip))) { + ZipEntry entry; + while ((entry = zis.getNextEntry()) != null) { + entries.put(entry.getName(), zis.readAllBytes()); + } + } + return entries; + } +}