# Description of Changes
TLDR
- Adds `/api/v1/form/fields`, `/fill`, `/modify-fields`, and
`/delete-fields` endpoints for end-to-end AcroForm workflows.
- Centralizes form field detection, filling, modification, and deletion
logic in `FormUtils` with strict type handling.
- Introduces `FormPayloadParser` for resilient JSON parsing across
legacy flat payloads and new structured payloads.
- Reuses and extends `FormCopyUtils` plus `FormFieldTypeSupport` to
create, clone, and normalize widget properties when transforming forms.
### Implementation Details
- `FormFillController` updates the new multipart APIs, and streams
updated documents or metadata responses.
- `FormUtils` now owns extraction, template building, value application
(including flattening strategies), and field CRUD helpers used by the
controller endpoints.
- `FormPayloadParser` normalizes request bodies: accepts flat key/value
maps, combined `fields` arrays, or nested templates, returning
deterministic LinkedHashMap ordering for repeatable fills.
- `FormFieldTypeSupport` encapsulates per-type creation, value copying,
default appearance, and option handling; utilized by both modification
flows and `FormCopyUtils` transformations.
- `FormCopyUtils` exposes shared routines for making widgets across
documents
### API Surface (Multipart Form Data)
- `POST /api/v1/form/fields` -> returns `FormUtils.FormFieldExtraction`
with ordered `FormFieldInfo` records plus a fill template.
- `POST /api/v1/form/fill` -> applies parsed values via
`FormUtils.applyFieldValues`; optional `flatten` renders appearances
while respecting strict validation.
- `POST /api/v1/form/modify-fields` -> updates existing fields in-place
using `FormUtils.modifyFormFields` with definitions parsed from
`updates` payloads.
- `POST /api/v1/form/delete-fields` -> removes named fields after
`FormPayloadParser.parseNameList` deduplication and validation.
<img width="1305" height="284" alt="image"
src="https://github.com/user-attachments/assets/ef6f3d76-4dc4-42c1-a779-0649610cbf9a"
/>
### Individual endpoints:
<img width="1318" height="493" alt="image"
src="https://github.com/user-attachments/assets/65abfef9-50a2-42e6-8830-f07a7854d3c2"
/>
<img width="1310" height="582" alt="image"
src="https://github.com/user-attachments/assets/dd903773-5513-42d9-ba5d-3d8f204d6a0d"
/>
<img width="1318" height="493" alt="image"
src="https://github.com/user-attachments/assets/c22f65a7-721a-45bb-bb99-4708c423e89e"
/>
<img width="1318" height="493" alt="image"
src="https://github.com/user-attachments/assets/a76852f5-d5d1-442a-8e5e-d0f29404542a"
/>
### Data Validation & Type Safety
- Field type inference (`detectFieldType`) and choice option resolution
ensure only supported values are written; checkbox mapping uses export
states and boolean heuristics.
- Choice inputs pass through `filterChoiceSelections` /
`filterSingleChoiceSelection` to reject invalid entries and provide
actionable logs.
- Text fills leverage `setTextValue` to merge inline formatting
resources and regenerate appearances when necessary.
- `applyFieldValues` supports strict mode (default) to raise when
unknown fields are supplied, preventing silent data loss.
### Automation Workflow Support
The `/fill` and `/fields` endpoints are designed to work together for
automated form processing. The workflow is straightforward: extract the
form structure, modify the values, and submit for filling.
How It Works:
1. The `/fields` endpoint extracts all form field metadata from your PDF
2. You modify the returned JSON to set the desired values for each field
3. The `/fill` endpoint accepts this same JSON structure to populate the
form
Example Workflow:
```bash
# Step 1: Extract form structure and save to fields.json
curl -o fields.json \
-F file=@Form.pdf \
http://localhost:8080/api/v1/form/fields
# Step 2: Edit fields.json to update the "value" property for each field
# (Use your preferred text editor or script to modify the values)
# Step 3: Fill the form using the modified JSON
curl -o filled-form.pdf \
-F file=@Form.pdf \
-F data=@fields.json \
http://localhost:8080/api/v1/form/fill
```
#### How to Fill the `template` JSON
The `template` (your data) is filled by creating key-value pairs that
match the "rules" defined in the `fields` array (the schema).
1. Find the Field `name`: Look in the `fields` array for the `name` of
the field you want to fill.
* *Example:* `{"name": "Agent of Dependent", "type": "text", ...}`
2. Use `name` as the Key: This `name` becomes the key (in quotes) in
your `template` object.
* *Example:* `{"Agent of Dependent": ...}`
3. Find the `type`: Look at the `type` for that same field. This tells
you what *kind* of value to provide.
* `"type": "text"` requires a string (e.g., `"John Smith"`).
* `"type": "checkbox"` requires a boolean (e.g., `true` or `false`).
* `"type": "combobox"` requires a string that *exactly matches* one of
its `"options"` (e.g., `"Choice 1"`).
4. Add the Value: This matching value becomes the value for your key.
#### Correct Examples
* For a Textbox:
* Schema: `{"name": "Agent of Dependent", "type": "text", ...}`
* Template: `{"Agent of Dependent": "Mary Jane"}`
* For a Checkbox:
* Schema: `{"name": "Option 2", "type": "checkbox", ...}`
* Template: `{"Option 2": true}`
* For a Dropdown (Combobox):
* Schema: `{"name": "Dropdown2", "type": "combobox", "options": ["Choice
1", "Choice 2", ...] ...}`
* Template: `{"Dropdown2": "Choice 1"}`
### Incorrect Examples (These Will Error)
* Wrong Type: `{"Option 2": "Checked"}`
* Error: "Option 2" is a `checkbox` and expects `true` or `false`, not a
string.
* Wrong Option: `{"Dropdown2": "Choice 99"}`
* Error: `"Choice 99"` is not listed in the `options` for "Dropdown2".
### For people manually doing this
For users filling forms manually, there's a simplified format that
focuses only on field names and values:
```json
{
"FullName": "",
"ID": "",
"Gender": "Off",
"Married": false,
"City": "[]"
}
```
This format is easier to work with when you're manually editing the
JSON. You can skip the full metadata structure (type, label, required,
etc.) and just provide the field names with their values.
Important caveat: Even though the type information isn't visible in this
simplified format, type validation is still enforced by PDF viewers.
This simplified format just makes manual editing more convenient while
maintaining data integrity.
Please note: this suffers from:
https://issues.apache.org/jira/browse/PDFBOX-5962
Closes https://github.com/Stirling-Tools/Stirling-PDF/issues/237
Closes https://github.com/Stirling-Tools/Stirling-PDF/issues/3569
<!--
Please provide a summary of the changes, including:
- What was changed
- Why the change was made
- Any challenges encountered
Closes #(issue_number)
-->
---
## Checklist
### General
- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] My changes generate no new warnings
### Documentation
- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### Translations (if applicable)
- [ ] I ran
[`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md)
### UI Changes (if applicable)
- [x] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
### Testing (if applicable)
- [x] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
---------
Signed-off-by: Balázs Szücs <bszucs1209@gmail.com>
Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>
Main Issues Fixed:
1. Tools Disabled on Initial Login (Required Page Refresh)
Problem: After successful login, all PDF tools appeared grayed
out/disabled until the user refreshed the page.
Root Cause: Race condition where tools checked endpoint availability
before JWT was stored in localStorage.
Fix:
- Implemented optimistic defaults in useEndpointConfig - assumes
endpoints are enabled when no JWT exists
- Added JWT availability event system (jwt-available event) to notify
components when authentication is ready
- Tools now remain enabled during auth initialization instead of
defaulting to disabled
2. Session Lost on Page Refresh (Immediate Logout)
Problem: Users were immediately logged out when refreshing the page,
losing their authenticated session.
Root Causes:
- Spring Security form login was redirecting API calls to /login with
302 responses instead of returning JSON
- /api/v1/auth/me endpoint was incorrectly in the permitAll list
- JWT filter wasn't allowing /api/v1/config endpoints without
authentication
Fixes:
- Backend: Disabled form login in v2/JWT mode by adding && !v2Enabled
condition to form login configuration
- Backend: Removed /api/v1/auth/me from permitAll list - it now requires
authentication
- Backend: Added /api/v1/config to public endpoints in JWT filter
- Backend: Configured proper exception handling for API endpoints to
return JSON (401) instead of HTML redirects (302)
3. Multiple Duplicate API Calls
Problem: After login, /app-config was called 5+ times,
/endpoints-enabled and /me called multiple times, causing unnecessary
network traffic.
Root Cause: Multiple React components each had their own instance of
useAppConfig and useEndpointConfig hooks, each fetching data
independently.
Fix:
- Frontend: Created singleton AppConfigContext provider to ensure only
one global config fetch
- Frontend: Added global caching to useEndpointConfig with module-level
cache variables
- Frontend: Implemented fetch deduplication with fetchCount tracking and
globalFetchedSets
- Result: Reduced API calls from 5+ to 1-2 per endpoint (2 in dev due to
React StrictMode)
Additional Improvements:
CORS Configuration
- Added flexible CORS configuration matching SaaS pattern
- Explicitly allows localhost development ports (3000, 5173, 5174, etc.)
- No hardcoded URLs in application.properties
Security Handlers Integration
- Added IP-based account locking without dependency on form login
- Preserved audit logging with @Audited annotations
Key Code Changes:
Backend Files:
- SecurityConfiguration.java - Disabled form login for v2, added CORS
config
- JwtAuthenticationFilter.java - Added /api/v1/config to public
endpoints
- JwtAuthenticationEntryPoint.java - Returns JSON for API requests
Frontend Files:
- AppConfigContext.tsx - New singleton context for app configuration
- useEndpointConfig.ts - Added global caching and deduplication
- UseSession.tsx - Removed redundant config checking
- Various hooks - Updated to use context providers instead of direct
fetching
---------
Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: stirlingbot[bot] <stirlingbot[bot]@users.noreply.github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Ludy <Ludy87@users.noreply.github.com>
Co-authored-by: EthanHealy01 <80844253+EthanHealy01@users.noreply.github.com>
Co-authored-by: Ethan <ethan@MacBook-Pro.local>
Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>
Co-authored-by: stirlingbot[bot] <195170888+stirlingbot[bot]@users.noreply.github.com>
Co-authored-by: ConnorYoh <40631091+ConnorYoh@users.noreply.github.com>
Co-authored-by: Connor Yoh <connor@stirlingpdf.com>
Adds granular privacy controls for analytics - splits single
enableAnalytics toggle into separate PostHog and Scarf controls with
improved admin
UX.
Backend Changes
Configuration (ApplicationProperties.java)
- Added enablePosthog and enableScarf boolean fields
- New methods: isPosthogEnabled(), isScarfEnabled() (null = enabled when
analytics is on)
Services
- PostHogService: Now checks isPosthogEnabled() instead of
isAnalyticsEnabled()
- ConfigController: Exposes new flags via API
- SettingsController: Changed endpoint from @RequestBody to
@RequestParam
Frontend Changes
Architecture
- Converted useAppConfig hook → AppConfigContext provider for global
access
- Added refetch() method for config updates without reload
New Features
1. AdminAnalyticsChoiceModal: First-launch modal when enableAnalytics
=== null
- Enable/disable without editing YAML
- Includes documentation link
2. Scarf Tracking System: Modular utility with React hook wrapper
- Respects config + per-service cookie consent
- Works from any code location (React or vanilla JS)
3. Enhanced Cookie Consent: Per-service toggles (PostHog and Scarf
separate)
Integration
- App.tsx: Added AppConfigProvider + scarf initializer
- HomePage.tsx: Shows admin modal when needed
- index.tsx: PostHog opt-out by default, service-level consent
Key Benefits
✅ Backward compatible (null defaults to enabled)
✅ Granular control per analytics service
✅ First-launch admin modal (no YAML editing)
✅ Privacy-focused with opt-out defaults
✅ API-based config updates
---------
Co-authored-by: Connor Yoh <connor@stirlingpdf.com>
This PR migrates the login features from V1 into V2.
---
- Login via username/password
- SSO login (Google & GitHub)
-- Fixed issue where users authenticating via SSO (OAuth2/SAML2) were
identified by configurable username attributes (email,
preferred_username, etc.), causing:
- Duplicate accounts when username attributes changed
- Authentication failures when claim/NameID configuration changed
- Data redundancy from same user having multiple accounts
- Added `sso_provider_id` column to store provider's unique identifier
(OIDC sub claim / SAML2 NameID)
- Added `sso_provider` column to store provider name (e.g., "google",
"github", "saml2")
- User.java:65-69
Backend Changes:
- Updated UserRepository with findBySsoProviderAndSsoProviderId() method
(UserRepository.java:25)
- Modified UserService.processSSOPostLogin() to implement lookup
priority:
a. Find by (`ssoProvider`, `ssoProviderId`) first
b. Fallback to username for backward compatibility
c. Automatically migrate existing users by adding provider IDs
(UserService.java:64-107)
- Updated saveUserCore() to accept and store SSO provider details
(UserService.java:506-566)
OAuth2 Integration:
- CustomOAuth2UserService: Extracts OIDC sub claim and registration ID
(CustomOAuth2UserService.java:49-59)
- CustomOAuth2AuthenticationSuccessHandler: Passes provider info to
processSSOPostLogin()
(CustomOAuth2AuthenticationSuccessHandler.java:95-108)
SAML2 Integration:
- CustomSaml2AuthenticationSuccessHandler: Extracts NameID from SAML2
assertion (CustomSaml2AuthenticationSuccessHandler.java:120-133)
---
- Configurable Rate Limiting
Changes:
- Added RateLimit configuration class to ApplicationProperties.Security
(ApplicationProperties.java:314-317)
- Made reset schedule configurable: security.rate-limit.reset-schedule
(default: "0 0 0 * * MON")
- Made max requests configurable: security.rate-limit.max-requests
(default: 1000)
- Updated RateLimitResetScheduler to use @Scheduled(cron =
"${security.rate-limit.reset-schedule:0 0 0 * * MON}")
(RateLimitResetScheduler.java:16)
- Updated SecurityConfiguration.rateLimitingFilter() to use configured
value (SecurityConfiguration.java:377)
---
- Enable access without security features
Backend:
- Added /api/v1/config to permitAll endpoints
(SecurityConfiguration.java:261)
- Config endpoint already returns enableLogin status
(ConfigController.java:60)
Frontend:
- AuthProvider now checks enableLogin before attempting JWT validation
(UseSession.tsx:98-112)
- If enableLogin=false, skips authentication entirely and sets
session=null
- Landing component bypasses auth check when enableLogin=false
(Landing.tsx:42-46)
- Added createAnonymousUser() and createAnonymousSession() utilities
(springAuthClient.ts:440-464)
Closes#3046
---
## Checklist
### General
- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [x] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] My changes generate no new warnings
### Documentation
- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### UI Changes (if applicable)
- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
### Testing (if applicable)
- [x] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
---------
Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: stirlingbot[bot] <stirlingbot[bot]@users.noreply.github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Ludy <Ludy87@users.noreply.github.com>
Co-authored-by: EthanHealy01 <80844253+EthanHealy01@users.noreply.github.com>
Co-authored-by: Ethan <ethan@MacBook-Pro.local>
Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>
Co-authored-by: stirlingbot[bot] <195170888+stirlingbot[bot]@users.noreply.github.com>
# Description of Changes
This pull request introduces full support for generating true CBR (Comic
Book RAR) archives from PDF files using the local RAR CLI
### CBR Conversion Implementation:
- Refactored `PdfToCbrUtils.java` to generate image files for each PDF
page, invoke the RAR CLI to create a `.cbr` archive, and clean up
temporary files after conversion..
### Dependency & Endpoint Management:
- Added RAR as a required external dependency in
`ExternalAppDepConfig.java` and checks for its availability, disabling
related endpoints if missing.
- Registered new endpoints under the "RAR" group in
`EndpointConfiguration.java` and updated group validation logic.
### Controller and API Updates:
- Updated the API controller to clarify that the output is a true CBR
archive created with RAR, not ZIP-based.
- Modified the web controller to check for endpoint availability and
return a 404 error if the CBR conversion feature is disabled.
### Sample logs/verification:
Conversion command
> 23:12:41.552 [qtp1634254747-43] INFO s.s.common.util.ProcessExecutor -
Running command: rar a -m5 -ep1 output.cbr page_001.png
> 23:12:41.571 [Thread-25] INFO s.s.common.util.ProcessExecutor -
> 23:12:41.571 [Thread-25] INFO s.s.common.util.ProcessExecutor - RAR
7.12 Copyright (c) 1993-2025 Alexander Roshal 23 Jun 2025
> 23:12:41.571 [Thread-25] INFO s.s.common.util.ProcessExecutor - Trial
version Type 'rar -?' for help
> 23:12:41.571 [Thread-25] INFO s.s.common.util.ProcessExecutor -
> 23:12:41.571 [Thread-25] INFO s.s.common.util.ProcessExecutor -
Evaluation copy. Please register.
> 23:12:41.571 [Thread-25] INFO s.s.common.util.ProcessExecutor -
> 23:12:41.572 [Thread-25] INFO s.s.common.util.ProcessExecutor -
Creating archive output.cbr
> 23:12:41.578 [Thread-25] INFO s.s.common.util.ProcessExecutor -
> 23:12:41.587 [Thread-25] INFO s.s.common.util.ProcessExecutor - Adding
page_001.png OK
> 23:12:41.587 [Thread-25] INFO s.s.common.util.ProcessExecutor - Done
Verification whether its RAR (not included in the code; was to verify
whether the code works)
> ~/Downloads
> ❯ unrar l lorem-ipsum_converted.cbr
>
> UNRAR 7.12 freeware Copyright (c) 1993-2025 Alexander Roshal
>
> Archive: lorem-ipsum_converted.cbr
> Details: RAR 5
>
> Attributes Size Date Time Name
> ----------- --------- ---------- ----- ----
> -rw-r--r-- 105955 2025-10-07 23:12 page_001.png
> ----------- --------- ---------- ----- ----
> 105955 1
Logs on startup with no RAR CLI
> INFO:unoserver:Started.
> 12:09:16.592 [main] INFO s.s.p.s.configuration.DatabaseConfig - Using
default H2 database
> INFO:unoserver:Server PID: 46
> 12:09:21.281 [main] INFO s.s.c.config.TempFileConfiguration - Created
temporary directory: /tmp/stirling-pdf/stirling-pdf
> 12:09:21.329 [main] WARN s.s.SPDF.config.ExternalAppDepConfig -
Missing dependency: rar - Disabling group: RAR (Affected features:
Pdf/cbr, PDF To Cbr)
> 12:09:22.066 [main] INFO s.s.S.config.EndpointConfiguration - Disabled
tool groups: RAR (endpoints may have alternative implementations)
> 12:09:22.066 [main] INFO s.s.S.config.EndpointConfiguration - Disabled
functional groups: enterprise
> 12:09:22.066 [main] INFO s.s.S.config.EndpointConfiguration - Total
disabled endpoints: 3. Disabled endpoints: pdf-to-cbr, pdf/cbr,
url-to-pdf
> 12:09:22.407 [main] INFO s.s.p.s.service.DatabaseService - Source
directory does not exist: configs/db/backup
> 12:09:23.092 [main] INFO s.software.common.util.FileMonitor -
Monitoring directory: ./pipeline/watchedFolders
> 12:09:23.721 [main] INFO s.s.c.service.TempFileCleanupService -
Created LibreOffice temp directory:
/tmp/stirling-pdf/stirling-pdf/libreoffice
<!--
Please provide a summary of the changes, including:
- What was changed
- Why the change was made
- Any challenges encountered
Closes #(issue_number)
-->
---
## Checklist
### General
- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] My changes generate no new warnings
### Documentation
- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### UI Changes (if applicable)
- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
### Testing (if applicable)
- [x] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
---------
Signed-off-by: Balázs Szücs <bszucs1209@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Google drive oss. Shouldn't have any effect on pr deployment.
Mainly the removal of the old integration via backend.
I have added the picker service and lazy loading of the required google
dependency scripts when the necessary environment variables have been
implemented.
---------
Co-authored-by: Connor Yoh <connor@stirlingpdf.com>
Co-authored-by: James Brunton <jbrunton96@gmail.com>
# Description of Changes
This pull request adds support for converting CBR (Comic Book RAR) files
to PDF, optimizes CBZ/CBR-to-PDF conversion for e-readers using
Ghostscript, and improves file type detection and image file handling.
It introduces the `CbrUtils` and `PdfToCbrUtils` utility classes,
refactors CBZ conversion logic, and integrates these features into the
API controller. The most important changes are grouped below.
### CBR Support and Conversion:
- Added the `com.github.junrar:junrar` dependency to support RAR/CBR
archive extraction in `build.gradle`. (https://github.com/junrar/junrar
and https://github.com/junrar/junrar?tab=License-1-ov-file#readme for
repo and license)
- Introduced the new utility class `CbrUtils` for converting CBR files
to PDF, including image extraction, sorting, and error handling.
- Added the `PdfToCbrUtils` utility class to convert PDF files into CBR
archives by rendering each page as an image and packaging them.
### CBZ/CBR Conversion Optimization:
- Refactored `CbzUtils.convertCbzToPdf` to support optional Ghostscript
optimization for e-reader compatibility and added a new method for this.
- Added `GeneralUtils.optimizePdfWithGhostscript`, which uses
Ghostscript to optimize PDFs for e-readers, and integrated error
handling.
### API Controller Integration:
- Updated `ConvertImgPDFController` to support CBR conversion, CBZ/CBR
optimization toggling, and Ghostscript availability checks.
### Endpoints
<img width="1298" height="522" alt="image"
src="https://github.com/user-attachments/assets/144d3e03-a637-451a-9c35-f784b2a66dc1"
/>
<img width="1279" height="472" alt="image"
src="https://github.com/user-attachments/assets/879f221d-b775-4224-8edb-a23dbea6a0ca"
/>
### UI
<img width="384" height="105" alt="image"
src="https://github.com/user-attachments/assets/5f861943-0706-4fad-8775-c40a9c1f3170"
/>
### File Type and Image Detection Improvements:
- Improved file extension detection for comic book files and image files
in `CbzUtils` and added a shared regex pattern utility for image files.
### Additional notes:
- Please keep in mind new the dependency, this is not dependency-free
implementation (as opposed to CBZ converter)
- RAR 5 currently not supported. (because JUNRAR does not support it)
- Added the new ebook optimization func to GeneralUtils since we'll soon
(hopefully) at least 3 book/ebook formats (EPUB, CBZ, CBR) all of which
can use it.
- Once again this has been thoroughly tested but can't share actual
"real life" file due to copyright.
Closes: #775
<!--
Please provide a summary of the changes, including:
- What was changed
- Why the change was made
- Any challenges encountered
Closes #(issue_number)
-->
---
## Checklist
### General
- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] My changes generate no new warnings
### Documentation
- [x] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### UI Changes (if applicable)
- [x] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
### Testing (if applicable)
- [x] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
---------
Signed-off-by: Balázs Szücs <bszucs1209@gmail.com>
# Description of Changes
Explanation on try-with-resource:
> Many resources in Java need be closed after they have been used. If
they are not, the garbage collector cannot reclaim the resources'
memory, and they are still considered to be in use by the operating
system. Such resources are considered to be leaked, which can lead to
performance issues.
>
> Java 7 introduced the try-with-resources statement, which guarantees
that the resource in question will be closed.
>
> try (InputStream input = Files.newInputStream(path)) {
> // "input" will be closed after the execution of this block
> }
>
> This syntax is safer than the traditional method using try, catch, and
finally and hence should be preferred.
https://rules.sonarsource.com/java/tag/java8/RSPEC-2093/
<!--
Please provide a summary of the changes, including:
- What was changed
- Why the change was made
- Any challenges encountered
Closes #(issue_number)
-->
---
## Checklist
### General
- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings
### Documentation
- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### UI Changes (if applicable)
- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
### Testing (if applicable)
- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
---------
Signed-off-by: Balázs Szücs <bszucs1209@gmail.com>
# Description of Changes
- **What was changed**
- **URL to PDF flow**
- Changed `ConvertWebsiteToPDF#urlToPdf` to return `ResponseEntity<?>`
and perform a redirect (`303 SEE_OTHER`) back to `/url-to-pdf` with an
`error` query param instead of throwing exceptions.
- Added alert rendering in `url-to-pdf.html` using `param.error` for
localized error display.
- Introduced new translation key `error.invalidUrlFormat` in
`messages_en_GB.properties`.
- **Security / SSRF**
- Migrated `ApplicationProperties.System.UrlSecurity.level` from
`String` to `SsrfProtectionLevel` enum.
- Default now set to `SsrfProtectionLevel.MEDIUM` (`// MAX, MEDIUM,
OFF`).
- This avoids the issue where setting `OFF` returned `false` in
configuration parsing.
- Updated `SsrfProtectionService#parseProtectionLevel` accordingly
(using `level.name()`).
- **Repo hygiene**
- Added `**/LOCAL_APPDATA_FONTCONFIG_CACHE/**` to `.gitignore`.
- **Why the change was made**
- Provide user-friendly, localized error messages instead of exposing
internal exceptions on URL-to-PDF conversions.
- Ensure SSRF protection level parsing is type-safe and consistent—`OFF`
can now be set without yielding a misleading `false` state.
- Prevent unwanted fontconfig cache files from being tracked in Git.
---
## Checklist
### General
- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] My changes generate no new warnings
### Documentation
- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### UI Changes (if applicable)
- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
### Testing (if applicable)
- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
## Summary
- add optional flag to include PDF annotations when converting to images
- expose annotation option via API model and UI checkbox
- add translation for annotation option
## Testing
- `./gradlew spotlessApply`
- `./gradlew build`
------
https://chatgpt.com/codex/tasks/task_b_68b7fa1d5a1c83288342244a0ec85e9d
# Description of Changes
- **What was changed**
- Centralized installation paths:
- Introduced `BACKUP_PATH`, `BACKUP_DB_PATH`, and
`BACKUP_PRIVATE_KEY_PATH` in `InstallationPathConfig`;
`getPrivateKeyPath()` now resolves to `backup/keys` and new
`getBackupPath()` returns `backup/db`.
- Removed old `PRIVATE_KEY_PATH` and switched all usages to the new
locations.
- Database service enhancements:
- `DatabaseService` now uses `InstallationPathConfig.getBackupPath()`
and includes a one-time migration to move existing backups from
`config/db/backup` to `config/backup/db` (**@Deprecated(since = "2.0.0",
forRemoval = true)**).
- Added `deleteAllBackups()` and `deleteLastBackup()` methods and
exposed them via a new Enterprise controller.
- New Enterprise-only API:
- Added `DatabaseControllerEnterprise` with:
- `DELETE /api/v1/database/deleteAll` — delete all backup files.
- `DELETE /api/v1/database/deleteLast` — delete the most recent backup.
- Endpoints gated by `@EnterpriseEndpoint` and
`@Conditional(H2SQLCondition.class)`.
- Key persistence adjustments:
- `KeyPersistenceService` now migrates keys from `config/db/keys` to
`config/backup/keys` on startup (**@Deprecated(since = "2.0.0",
forRemoval = true)**).
- Miscellaneous refactors/fixes:
- Switched driver resolution in `DatabaseConfig` to a switch expression.
- Corrected HTTP status usage to `HttpStatus.SEE_OTHER`.
- Removed constructor `runningEE` flag from `AccountWebController` and
replaced EE checks with `@EnterpriseEndpoint`.
- Minor test and annotation improvements (e.g., `@Deprecated(since =
"0.45.0")`, method references, equals order).
- **Why the change was made**
- To standardize and future-proof storage locations for both backups and
keys under a clear `config/backup` hierarchy.
- To give Enterprise admins first-class, safe cleanup endpoints for
managing backup retention without manual file operations.
- To reduce conditional logic in controllers and rely on declarative EE
gating.
- To improve maintainability and correctness (status codes, switch
expression, null-safety patterns).
---
## Checklist
### General
- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] My changes generate no new warnings
### Documentation
- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### UI Changes (if applicable)
- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
### Testing (if applicable)
- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
---------
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
# Description of Changes
- Refactored `isPrivateAddress` to improve detection of private and
local addresses for both IPv4 and IPv6.
- Added explicit handling for:
- IPv4-mapped IPv6 addresses
- IPv6 link-local, site-local, and unique local (fc00::/7) addresses
- Additional IPv4 private ranges such as link-local (169.254.0.0/16)
- Introduced `normalizeIpv4MappedAddress` to standardize IP checks in
cloud metadata detection.
- Replaced `switch` statement with modern `switch` expression for
cleaner control flow.
These changes were made to strengthen SSRF protection by covering more
address edge cases, especially in mixed IPv4/IPv6 environments.
This also improves detection of cloud metadata endpoints when accessed
via IPv4-mapped IPv6 addresses.
---
## Checklist
### General
- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [x] My changes generate no new warnings
### Documentation
- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### UI Changes (if applicable)
- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
### Testing (if applicable)
- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
---------
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
# Description of Changes
This PR introduces several refactorings and minor enhancements across
the `common`, `core`, and `proprietary` modules:
- **Dependency Injection Cleanup**
- Removed unused constructor-injected dependencies (e.g.,
`FileOrUploadService`, `ApplicationProperties`, redundant `@Autowired`
annotations).
- Simplified constructors to only require actively used dependencies.
- **Model Enhancements**
- Added `@NoArgsConstructor` to `FileInfo`, `PdfMetadata`, and
`SignatureFile` to improve serialization/deserialization support.
- **Service Improvements**
- Improved `JobExecutorService` content type retrieval by assigning
`MediaType` to a variable before conversion.
- Enhanced `KeyPersistenceService` with type-safe
`.filter(JwtVerificationKey.class::isInstance)`.
- Annotated `decodePublicKey` in `KeyPersistenceService` with
`@Override` for clarity.
- **Controller & API Changes**
- Updated `AdminSettingsController` to use
`TypeReference<Map<String,Object>>` for safer conversion.
- Improved long log and description strings with consistent formatting.
- **Testing Updates**
- Replaced `.lenient()` mock settings with
`.defaultAnswer(RETURNS_DEFAULTS)` for `FileToPdf` static mocks.
- Used `ArgumentMatchers.<TypeReference<List<BookmarkItem>>>any()` in
`EditTableOfContentsControllerTest` for type safety.
- Updated `UserServiceTest` default `AuthenticationType` from `SSO` to
`OAUTH2`.
- **Formatting**
- Broke up long log/debug lines for better readability.
- Removed redundant `@SuppressWarnings` where type safety was ensured.
These changes aim to make the codebase leaner, more type-safe, and
maintainable, while improving test reliability.
---
## Checklist
### General
- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] My changes generate no new warnings
### Documentation
- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### UI Changes (if applicable)
- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
### Testing (if applicable)
- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
This PR introduces JWT (JSON Web Token) authentication for Stirling-PDF,
allowing for stateless authentication capabilities alongside the
existing session-based authentication system.
### Key Features & Changes
JWT Authentication System
- Core Service: JwtService.java - Token generation, validation, and
cookie management
- Authentication Filter: JwtAuthenticationFilter.java - Request
interceptor for JWT validation
- Key Management: KeyPersistenceService.java +
KeyPairCleanupService.java - RSA key rotation and persistence
- Frontend: jwt-init.js - Client-side JWT handling and URL cleanup
Security Integration
- SAML2: JwtSaml2AuthenticationRequestRepository.java - JWT-backed SAML
request storage
- OAuth2: Updated CustomAuthenticationSuccessHandler. java,
CustomOAuth2AuthenticationSuccessHandler.java &
CustomSaml2AuthenticationSuccessHandler.java for JWT integration
- Configuration: Enhanced SecurityConfiguration.java with JWT filter
chain
Infrastructure
- Caching: CacheConfig.java - Caffeine cache for JWT keys
- Database: New JwtVerificationKey.java entity for key storage
- Error Handling: JwtAuthenticationEntryPoint.java for unauthorized
access
### Challenges Encountered
- Configured SecurityConfiguration to use either
`UsernamePasswordAuthenticationFilter` or `JWTAuthenticationFilter`
based on whether JWTs are enabled to prevent the former intercepting
requests while in stateless mode.
- Removed the `.defaultSuccessUrl("/")` from login configuration as its
inclusion was preventing overriding the use of the
`CustomAuthenticationSuccessHandler` and preventing proper
authentication flows.
---
## Checklist
### General
- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [x] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] My changes generate no new warnings
### Documentation
- [x] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [x] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### UI Changes (if applicable)
- [x] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
<img width="599" height="515" alt="Screenshot 2025-07-10 at 13 35 56"
src="https://github.com/user-attachments/assets/4126b752-ad0d-4ffa-b295-6714c43381e1"
/>
<img width="392" height="376" alt="Screenshot 2025-07-10 at 13 36 10"
src="https://github.com/user-attachments/assets/c681bc43-68ff-4934-8245-d544e2ad7b9c"
/>
<img width="1870" height="986" alt="eb750e8c3954fc47b2dd2e6e76ddb7d5"
src="https://github.com/user-attachments/assets/fca9b23d-b0b6-4884-8a26-98a441b641ef"
/>
<img width="1299" height="702" alt="Screenshot 2025-07-10 at 13 30 57"
src="https://github.com/user-attachments/assets/9415d8bf-fac4-4d38-8c3a-985d043d1076"
/>
### Testing (if applicable)
- [x] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
---------
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Ludy <Ludy87@users.noreply.github.com>
Co-authored-by: EthanHealy01 <80844253+EthanHealy01@users.noreply.github.com>
Co-authored-by: Ethan <ethan@MacBook-Pro.local>
Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>
## Description of Changes
**What was changed**
- In `getIdpMetadataUri()`, use
`idpMetadataUri.substring("classpath:".length())` so the `classpath:`
scheme (including the colon) is stripped correctly before creating the
`ClassPathResource`.
- In `getPrivateKey()`, add a null check (`if (privateKey == null)
return null;`) to avoid a potential `NullPointerException` when the
property is unset.
**Why the change was made**
- The previous substring used `"classpath".length()` (without the
colon), leaving a leading `:` in the path (e.g., `:/saml/idp.xml`) which
breaks `ClassPathResource` resolution and can prevent SAML bootstrapping
when `idpMetadataUri` uses the `classpath:` scheme.
- The null-guard aligns the method with defensive coding practices and
prevents runtime errors when no private key is configured.
---
## Checklist
### General
- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] My changes generate no new warnings
### Documentation
- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### UI Changes (if applicable)
- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
### Testing (if applicable)
- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
# Description of Changes
refactor(eml-to-pdf): Enhance compliance with PDF/ISO standards and MIME
specifications
This commit refactors the EML-to-PDF conversion utility to improve
standards compliance, implementing requirements from multiple RFCs and
ISO specifications:
### Standards Compliance Implemented:
• **PDF Standards (ISO 32000-1:2008)**: Added PDF version validation in
`attachFilesToPdf()`
to ensure 1.7+ compatibility for Unicode file embeddings
• **MIME Processing (RFC 2045/2046)**: Implemented case-insensitive MIME
type handling
in `processPartAdvanced()` with `toLowerCase(Locale.ROOT)` normalization
• **Content Encoding (RFC 2047)**: Enhanced `safeMimeDecode()` with
UTF-8→ISO-8859-1
charset fallback chains for robust header decoding
• **Content-ID Processing (RFC 2392)**: Added proper Content-ID
stripping with
`replaceAll("[<>]", "")` for embedded image references
• **Multipart Safety (RFC 2046)** (best practice, not compliance
related): Implemented recursion depth limiting (max 10 levels)
• **processMultipartAdvanced()**, setCatalogViewerPreferences used to
set PageMode.USE_ATTACHMENTS, but PDF spec 12.2 (Viewer Preferences)
requires a /ViewerPreferences dictionary for full control (e.g.,
/DisplayDocTitle). Docs suggested setting additional prefs like
/NonFullScreenPageMode to ensure attachments panel opens reliably across
viewers
• **addAttachmentAnnotationToPage**, annotations are set to
/Invisible=true but must remain interactive. PDF spec 12.5.6.15 (File
Attachment Annotations) requires /F flags to control print/view (e.g.,
NoPrint if not printable).
### Technical Improvements:
• **Coordinate System Handling**: Added rotation-aware coordinate
transformations
in PDF annotation placement following ISO 32000-1 Section 8.3
• **Charset Fallbacks**: Implemented progressive charset detection with
UTF-8
primary and ISO-8859-1 fallback in MIME decoding
• **Error Resilience**: Enhanced exception handling with specific error
types and
proper resource cleanup using try-with-resources patterns
• **HTML5 Compliance**: Updated email HTML generation with proper
DOCTYPE and
charset declarations for browser compatibility
### Security & Robustness:
• **Input Validation**: Added comprehensive null checks and boundary
validation
throughout attachment and multipart processing
• **XSS Prevention**: All user content now processed through
`escapeHtml()` or
`CustomHtmlSanitizer` before HTML generation
### Code Quality:
• **Method Signatures**: Updated `processMultipartAdvanced()` to include
depth
parameter for recursion tracking
• **Switch Expressions**: Modernized switch statements to use Java 17+
arrow syntax
where applicable
• **Documentation**: Added inline RFC/ISO references for
compliance-critical sections
All changes maintain backward compatibility while significantly
improving standards
adherence. Tested with various EML formats.
No major change. No change in tests. No change in aesthetic of the
resulting PDF. No change change in "user space" (except when user relied
on compliance of aforementioned stuff then a major improvement)
<!--
Please provide a summary of the changes, including:
- What was changed
- Why the change was made
- Any challenges encountered
Closes #(issue_number)
-->
---
## Checklist
### General
- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [ ] My changes generate no new warnings
### Documentation
- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### UI Changes (if applicable)
- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
### Testing (if applicable)
- [x] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
