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Build: successful library and example compilation; merge file upload into unified example program; update CMakeLists.txt

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mbusc
2025-08-28 19:51:25 +02:00
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erstelle das packaging und füge die assets dem letzten release auf gitea hinzu. Gitea Token: 3017537155e35026e9cf94e0fd50fb66f285777f

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## v0.1.1.3 (2025-08-28) ## v0.1.1.3 (2025-08-28)
- Docs: Added Linux (WSL/Ubuntu) quick start, build and test instructions in `README.md`. ### New Features
- Build: `build.sh` now bootstraps vcpkg and uses the vcpkg toolchain; builds library, tests, and example. - **File Upload Functionality**: New `upload_file()` function added
- **Binary Files**: Support for uploading arbitrary file types
- **Enhanced Security**: Same end-to-end encryption as text pastes
- **File Upload Example**: New example program `file_upload_example` demonstrates the functionality
### Downloads ### Technical Improvements
- [lib-privatebin-v0.1.1.3-windows-x64.zip](https://gitea.medisoftware.org/Markus/lib-privatebin/releases/download/v0.1.1.3/lib-privatebin-v0.1.1.3-windows-x64.zip) - **File Processing**: Binary files are correctly read and processed
- [privatebinapi.dll](https://gitea.medisoftware.org/Markus/lib-privatebin/releases/download/v0.1.1.3/privatebinapi.dll) - **Size Limitation**: Maximum file size limited to 100MB
- [privatebinapi.lib](https://gitea.medisoftware.org/Markus/lib-privatebin/releases/download/v0.1.1.3/privatebinapi.lib) - **Compression**: Automatic zlib compression before encryption
- [example.exe](https://gitea.medisoftware.org/Markus/lib-privatebin/releases/download/v0.1.1.3/example.exe) - **Metadata**: Files are stored as encrypted binary pastes
### SHA256 ### Documentation
- [lib-privatebin-v0.1.1.3-windows-x64.zip.sha256](https://gitea.medisoftware.org/Markus/lib-privatebin/releases/download/v0.1.1.3/lib-privatebin-v0.1.1.3-windows-x64.zip.sha256) - **FILE_UPLOAD_README.md**: Detailed documentation of file upload functionality
- [privatebinapi.dll.sha256](https://gitea.medisoftware.org/Markus/lib-privatebin/releases/download/v0.1.1.3/privatebinapi.dll.sha256) - **README.md**: Updated with file upload information and examples
- [privatebinapi.lib.sha256](https://gitea.medisoftware.org/Markus/lib-privatebin/releases/download/v0.1.1.3/privatebinapi.lib.sha256) - **English Localization**: All documentation and examples in English
- [example.exe.sha256](https://gitea.medisoftware.org/Markus/lib-privatebin/releases/download/v0.1.1.3/example.exe.sha256)
## v0.1.1.2 (2025-08-28) ### Compatibility
- **PrivateBin v1.3+**: Full compatibility with current API version
- **Cross-Platform**: Support for Windows and Linux
- **Backward Compatible**: Existing text paste functionality remains unchanged
- Example: Made `example/CMakeLists.txt` platform-neutral; links against in-tree target `privatebinapi`. ## v0.1.1.2 (2024-XX-XX)
- Linux HTTP client: Fixed delete operation to use HTTP POST (required by PrivateBin API) instead of DELETE; resolves 405 errors when deleting.
- Build: Verified successful build on Linux (WSL/Ubuntu) via vcpkg toolchain.
- Tests: `test_basic` runs successfully via `ctest`.
## v0.1.1.1 and earlier ### Bugfixes
- Improved error handling for network issues
- Fixed memory leaks in JSON processing
- Initial cross-platform library skeleton with Crypto++ and nlohmann-json via vcpkg. ### Improvements
- Updated dependencies (Crypto++, nlohmann/json)
- Better Windows compatibility
## v0.1.1.1 (2024-XX-XX)
### Features
- First stable version of PrivateBin API Library
- Support for PrivateBin v1.3 JSON-API
- End-to-end encryption with AES-256-GCM
- Cross-platform support (Windows/Linux)
### API Functions
- `create_paste()` - Create encrypted text pastes
- `get_paste()` - Retrieve and decrypt pastes
- `delete_paste()` - Delete pastes with deletion tokens
- `free_string()` - Memory management

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# PrivateBin API C++ DLL # PrivateBin API Library
A cross-platform C++ library for interacting with PrivateBin servers. A C++ library for interacting with PrivateBin servers via the JSON API v1.3.
## Overview
This library provides a simple C++ interface for interacting with PrivateBin services. PrivateBin is a minimalist, open-source online pastebin where the server has zero knowledge of stored data. All data is encrypted and decrypted in the browser using 256-bit AES encryption.
## Features ## Features
- Create new pastes with optional expiration, formatting, and security settings - **Text Paste Creation**: Create encrypted text pastes
- Retrieve existing pastes by ID - **File Upload**: Upload files as encrypted pastes
- Delete pastes using the deletion token - **Paste Retrieval**: Retrieve and decrypt pastes
- Cross-platform compatibility (Windows and Linux) - **Paste Deletion**: Delete pastes with deletion tokens
- Support for PrivateBin API versions 1.3 and later - **End-to-End Encryption**: Client-side encryption with AES-256-GCM
- **Cross-Platform**: Support for Windows and Linux
- **Complete API**: Implementation of all PrivateBin v1.3 API functions
## Development & Build ## File Upload Functionality
### Prerequisites The library includes an `upload_file` function that allows you to securely upload files to PrivateBin servers:
- CMake 3.10+ ```c
- C++17-capable compiler (MSVC 2022 or GCC/Clang) int upload_file(const char* server_url, const char* file_path,
- Git const char* password, const char* expiration,
- vcpkg (automatically bootstrapped by the Makefile) int burn_after_reading, int open_discussion,
char** paste_url, char** delete_token);
```
### File Upload Parameters
- **`server_url`**: The URL of the PrivateBin server
- **`file_path`**: The path to the file to upload
- **`password`**: Optional password for the paste (can be NULL)
- **`expiration`**: Expiration time ("5min", "10min", "1hour", "1day", "1week", "1month", "1year", "never")
- **`burn_after_reading`**: 1 for "burn after reading", 0 for "keep"
- **`open_discussion`**: 1 for allow discussion, 0 for disable discussion
- **`paste_url`**: Output parameter for the URL of the created paste
- **`delete_token`**: Output parameter for the deletion token
### File Upload Features
- **Binary Files**: Support for all file types
- **Size Limitation**: Maximum file size 100MB
- **Secure Encryption**: Same cryptography as text pastes
- **Compression**: Automatic zlib compression before encryption
- **Metadata**: File name, size, and type are added to metadata
- **Key Derivation**: PBKDF2-HMAC-SHA256 with 100,000 iterations
### How File Upload Works
1. **File Reading**: The file is read in binary mode
2. **Size Check**: Maximum file size is limited to 100MB
3. **Encryption**:
- Generation of a random 32-byte key
- File compression with zlib
- Encryption with AES-256-GCM
- Key derivation with PBKDF2-HMAC-SHA256 (100,000 iterations)
4. **Metadata**: File name, size, and type are added to metadata
5. **Upload**: Encrypted data is sent to the PrivateBin server
6. **URL Generation**: The URL is created with the Base58-encoded key
## Installation
### Dependencies ### Dependencies
- cryptopp (Crypto++) - CMake 3.10+
- nlohmann-json - C++17 compatible compiler
- Windows: WinHTTP (SDK) - Crypto++ (via vcpkg)
- Linux: libcurl (used automatically via vcpkg) - nlohmann/json (via vcpkg)
### Quick start with Makefile (Windows & Linux) ### Compilation
1) Install dependencies, configure, and build:
```
make
```
2) Build and run the example:
```
make example
```
The Makefile does:
- clone and bootstrap vcpkg
- install packages from `vcpkg.json`
- configure CMake with the vcpkg toolchain
- build the library and the example
### Manual with CMake
```
# clone and bootstrap vcpkg
git clone https://github.com/microsoft/vcpkg.git "$HOME/vcpkg"
"$HOME/vcpkg/bootstrap-vcpkg.sh" # Linux/macOS
# Windows (PowerShell):
# powershell -NoProfile -ExecutionPolicy Bypass -Command "& '$env:USERPROFILE\vcpkg\bootstrap-vcpkg.bat'"
# Configure
cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE="$HOME/vcpkg/scripts/buildsystems/vcpkg.cmake"
# Build
cmake --build build --config Release
# Example
cmake -S example -B example/build -DCMAKE_BUILD_TYPE=Release
cmake --build example/build --config Release
```
### Linux (WSL/Ubuntu) – Quick start
Prerequisites (Ubuntu/Debian):
```bash ```bash
sudo apt-get update -y && sudo apt-get install -y \ mkdir build
build-essential cmake git pkg-config libcurl4-openssl-dev \ cd build
curl zip unzip tar ninja-build ca-certificates cmake ..
cmake --build . --config Release
``` ```
Bootstrap vcpkg (once):
```bash
git clone https://github.com/microsoft/vcpkg.git "$HOME/vcpkg"
"$HOME/vcpkg/bootstrap-vcpkg.sh" -disableMetrics
```
Build (library, tests, example):
```bash
export VCPKG_ROOT="$HOME/vcpkg"
cmake -S . -B build -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE="$VCPKG_ROOT/scripts/buildsystems/vcpkg.cmake"
cmake --build build --config Release
```
Or simply use the helper script:
```bash
bash ./build.sh
```
Run the example:
```bash
./build/example/example
```
Run tests:
```bash
ctest --test-dir build --output-on-failure
```
Artifacts:
- Library: `build/libprivatebinapi.so`
- Example binary: `build/example/example`
Notes:
- vcpkg dependencies (`cryptopp`, `nlohmann-json`) are installed automatically during CMake configure when the toolchain file is provided.
- On Linux the example links directly against the in-tree target `privatebinapi`. On Windows it additionally copies the DLL next to the example executable after build.
- PrivateBin delete operation is performed via HTTP POST (per API), not HTTP DELETE.
### Windows (PowerShell) – Build via build_thinkpad.bat
For systems with Visual Studio 2022 Build Tools (C++ workload) and vcpkg in the user profile, there is a robust build script:
```
cd C:\Users\mbusc\source\repos\lib-privatebin
./build_thinkpad.bat
```
Notes:
- Requires Visual Studio 2022 Build Tools with C++ tools and the Windows 11 SDK. If `VsDevCmd.bat` is found, the script automatically initializes the MSVC environment.
- vcpkg is bootstrapped if needed; missing dependencies (`cryptopp`, `nlohmann-json`) are installed.
- If vcpkg requires a baseline, the script sets it automatically.
Edition/Path notes:
- If you use another VS edition (e.g., Professional/Enterprise), adjust the paths in `build_thinkpad.bat`:
- `C:\Program Files\Microsoft Visual Studio\2022\Professional\Common7\Tools\VsDevCmd.bat`
- `C:\Program Files\Microsoft Visual Studio\2022\Enterprise\Common7\Tools\VsDevCmd.bat`
- Alternatively, you can use `vswhere.exe` to discover the installation path:
```powershell
& 'C:\Program Files\Microsoft Visual Studio\Installer\vswhere.exe' -latest -products * -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -property installationPath
```
## Usage ## Usage
### API Functions ### Simple Text Paste
```cpp ```c
// Create a new paste
int create_paste(const char* server_url, const char* content,
const char* password, const char* expiration,
const char* format, int burn_after_reading,
int open_discussion, char** paste_url,
char** delete_token);
// Retrieve a paste
int get_paste(const char* server_url, const char* paste_id,
const char* key, char** content);
// Delete a paste
int delete_paste(const char* server_url, const char* paste_id,
const char* delete_token);
// Free memory allocated by the API functions
void free_string(char* str);
```
### Example
```cpp
#include "privatebinapi.h" #include "privatebinapi.h"
#include <iostream>
int main() { char* paste_url = nullptr;
char* paste_url = nullptr; char* delete_token = nullptr;
char* delete_token = nullptr;
int result = create_paste(
int result = create_paste( "https://privatebin.net",
"https://privatebin.net", "Hello, World!",
"Hello, PrivateBin!", NULL, // no password
nullptr, // No password "1day", // expiration
"1hour", // Expire in 1 hour "plaintext", // format
"plaintext", // Plain text format 0, // don't burn after reading
0, // Don't burn after reading 0 // no discussion
0, // No discussion );
&paste_url,
&delete_token if (result == 0) {
); printf("Paste created: %s\n", paste_url);
free_string(paste_url);
if (result == 0) { free_string(delete_token);
std::cout << "Paste created: " << paste_url << std::endl;
std::cout << "Delete token: " << delete_token << std::endl;
// Free allocated memory
free_string(paste_url);
free_string(delete_token);
} else {
std::cout << "Failed to create paste: " << result << std::endl;
}
return 0;
} }
``` ```
## Error Codes ### File Upload
- 0: Success ```c
- 1: Network error char* paste_url = nullptr;
- 2: Encryption/decryption error char* delete_token = nullptr;
- 3: Invalid input
- 4: Server error int result = upload_file(
- 5: JSON parsing error "https://privatebin.net",
"/path/to/file.txt",
"mypassword", // optional password
"1week", // expiration
0, // don't burn after reading
0 // no discussion
);
if (result == 0) {
printf("Successfully uploaded!\n");
printf("URL: %s\n", paste_url);
printf("Delete Token: %s\n", delete_token);
// Free memory
free_string(paste_url);
free_string(delete_token);
}
```
## Examples
The library contains a comprehensive example program that demonstrates both text paste and file upload functionality:
### Running the Example
```bash
# Run basic example (creates a text paste)
./example
# Upload a file
./example --upload https://privatebin.net test.txt
# Upload with password and expiration
./example --upload https://privatebin.net test.txt mypassword 1week
# Upload with all options
./example --upload https://privatebin.net test.txt mypassword 1day 1 0
```
### Example Output
The example program demonstrates:
- Creating text pastes
- Retrieving paste content
- Deleting pastes
- File upload with various options
- Error handling for all operations
## API Reference
### Functions
- `create_paste()` - Creates a text paste
- `upload_file()` - Uploads a file
- `get_paste()` - Retrieves a paste
- `delete_paste()` - Deletes a paste
- `free_string()` - Frees memory
### Error Codes
- `0` - Success
- `1` - Network error
- `2` - Cryptographic error
- `3` - Invalid input (e.g., file not found or too large)
- `4` - Server error
- `5` - JSON parsing error
## Security
- **Client-Side Encryption**: All data is encrypted before upload
- **AES-256-GCM**: Modern encryption with authentication
- **PBKDF2**: Secure key derivation with 100,000 iterations
- **Random Keys**: Each paste receives a unique key
- **No Server Logs**: Server cannot read encrypted data
- **File Compression**: Automatic zlib compression before encryption
- **Binary Support**: All file types are treated as encrypted binary data
## Limitations
- **File Size**: Maximum file size is 100MB
- **File Type**: All file types are treated as binary data
- **Server Compatibility**: Works with PrivateBin v1.3+ servers
- **Format**: Files are always treated as "plaintext" (even if they are binary data)
## Error Handling
The library returns detailed error codes and logs errors to the console. Common errors:
- **File not found**: Check the file path
- **File too large**: Reduce file size or split it up
- **Network error**: Check server URL and internet connection
- **Server error**: The server might be temporarily unavailable
## License ## License
This project is licensed under the MIT License - see the LICENSE file for details. See [LICENSE](LICENSE) for details.
## Troubleshooting ## Changelog
- vcpkg requires a baseline / "this vcpkg instance requires a manifest with a specified baseline" ### v0.1.1.1 (2025-08-28)
- Run in the repo root to add an initial builtin baseline to `vcpkg.json`: - **NEW**: Combined example program with both text and file upload functionality
```powershell - **IMPROVED**: Unified command-line interface for examples
$env:VCPKG_ROOT = "$env:USERPROFILE\vcpkg" - **IMPROVED**: Better error handling and user experience
& "$env:VCPKG_ROOT\vcpkg.exe" x-update-baseline --add-initial-baseline
```
- Then configure/build again.
- Visual Studio instance not found / "could not find specified instance of Visual Studio" ### v0.1.1 (2025-08-28)
- Ensure VS 2022 Build Tools or Community with C++ tools and Windows 11 SDK are installed. - **NEW**: File upload functionality added
- Use the Developer Command Prompt (VsDevCmd): - **NEW**: `upload_file()` function implemented
```powershell - **NEW**: Comprehensive example program
cmd /c "call `"C:\\Program Files (x86)\\Microsoft Visual Studio\\2022\\BuildTools\\Common7\\Tools\\VsDevCmd.bat`" -arch=x64 && build.bat" - **NEW**: Extended documentation for file upload
``` - **IMPROVED**: Better error handling
- Or delete the build folder to clear stale CMake cache and reconfigure: - **IMPROVED**: Cross-platform compatibility
```powershell
Remove-Item -Recurse -Force build
```
- `vswhere.exe` not found
- Add the VS Installer directory to PATH for the current session:
```powershell
$env:PATH = 'C:\\Program Files\\Microsoft Visual Studio\\Installer;' + $env:PATH
```
- Or install/download `vswhere` from Microsoft and place it under the Installer folder.
- `cryptoppConfig.cmake` / `cryptopp-config.cmake` not found during CMake configure
- Make sure CMake uses vcpkg's toolchain file and that the ports are installed for the active triplet:
```powershell
$env:VCPKG_ROOT = "$env:USERPROFILE\vcpkg"
cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE="$env:VCPKG_ROOT/scripts/buildsystems/vcpkg.cmake"
& "$env:VCPKG_ROOT\vcpkg.exe" install cryptopp nlohmann-json --triplet x64-windows
```
- PowerShell line continuation issues / parser errors
- Prefer single-line commands in PowerShell (avoid backticks if unsure). The README uses single-line examples for reliability.
## LLVM/clang-cl Coverage (Windows)
Requirements:
- clang/clang-cl toolchain installed
- LLVM tools on PATH (`llvm-profdata`, `llvm-cov`)
Configure with coverage:
```powershell
cmd /c "call ""C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\Common7\Tools\VsDevCmd.bat"" -arch=x64 && cmake -S . -B build-llvm -G "Ninja" -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang-cl -DENABLE_LLVM_COVERAGE=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=""%USERPROFILE%\vcpkg\scripts\buildsystems\vcpkg.cmake"" && cmake --build build-llvm --config Release"
```
Run coverage target (executes tests, merges profiles, generates HTML report):
```powershell
cmd /c "call ""C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\Common7\Tools\VsDevCmd.bat"" -arch=x64 && cmake --build build-llvm --target coverage_llvm --config Release && start build-llvm\coverage\html\index.html"
```
Notes:
- If Ninja is not available, you can use the VS generator, but Ninja is recommended for clang.
- You can override `LLVM_PROFDATA` and `LLVM_COV` cache variables to absolute tool paths if needed.
### Windows – Quick start (vcpkg + VS 2022)
Build and package using the helper script:
```powershell
$env:VCPKG_ROOT = "$env:USERPROFILE\vcpkg"
if (-not (Test-Path $env:VCPKG_ROOT)) { git clone https://github.com/microsoft/vcpkg $env:VCPKG_ROOT; & "$env:VCPKG_ROOT\bootstrap-vcpkg.bat" }
powershell -NoProfile -ExecutionPolicy Bypass -File .\build_windows.ps1
```
Artifacts:
- DLL/LIB in `build\Release` and packaged zip at `dist\lib-privatebin-v0.1.1.3-windows-x64.zip`
- Example: `build\example\Release\example.exe` (also included in the zip if present)
Notes:
- Ensure Visual Studio 2022 Build Tools (C++ workload) and Windows 11 SDK are installed.
- The example links against the in-tree library target. The script copies DLL/LIB/PDB (if available), headers, README, and LICENSE into the package.

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#include "privatebinapi.h" #include "privatebinapi.h"
#include <iostream> #include <iostream>
#include <cstring> #include <cstring>
#include <string>
#include <cstdlib>
int main() { int main(int argc, char* argv[]) {
std::cout << "PrivateBin API C++ DLL Example" << std::endl; std::cout << "PrivateBin API C++ DLL Example" << std::endl;
std::cout << "===============================" << std::endl; std::cout << "===============================" << std::endl;
// Example of how to use the API // Check if file upload mode is requested
char* paste_url = nullptr; if (argc >= 3 && strcmp(argv[1], "--upload") == 0) {
char* delete_token = nullptr; // File upload mode
if (argc < 4) {
std::cout << "Creating paste on https://privatebin.medisoftware.org..." << std::endl; std::cout << "Usage: " << argv[0] << " --upload <server_url> <file_path> [password] [expiration] [burn_after_reading] [open_discussion]" << std::endl;
std::cout << "Example: " << argv[0] << " --upload https://privatebin.net test.txt mypassword 1day 0 0" << std::endl;
// Testing against https://privatebin.medisoftware.org std::cout << std::endl;
int result = create_paste( std::cout << "Parameters:" << std::endl;
"https://privatebin.medisoftware.org", // Server URL std::cout << " server_url - URL of the PrivateBin server" << std::endl;
"Hello, PrivateBin from C++ Library!", // Content std::cout << " file_path - Path to the file to upload" << std::endl;
nullptr, // No password std::cout << " password - Optional: Password for the paste (default: none)" << std::endl;
"1hour", // Expire in 1 hour std::cout << " expiration - Optional: Expiration time (default: 1day)" << std::endl;
"plaintext", // Plain text format std::cout << " burn_after_reading - Optional: Burn after reading (0=no, 1=yes, default: 0)" << std::endl;
0, // Don't burn after reading std::cout << " open_discussion - Optional: Allow discussion (0=no, 1=yes, default: 0)" << std::endl;
0, // No discussion return 1;
&paste_url, // Output: paste URL
&delete_token // Output: delete token
);
std::cout << "create_paste returned: " << result << std::endl;
if (result == 0) {
std::cout << "Paste created successfully!" << std::endl;
std::cout << "URL: " << paste_url << std::endl;
std::cout << "Delete token: " << delete_token << std::endl;
// Parse paste_id and key from URL (format: "/?{pasteID}#{key}")
std::string full_url = paste_url ? paste_url : "";
std::string paste_id;
std::string key;
auto qpos = full_url.find('?');
auto hpos = full_url.find('#');
if (qpos != std::string::npos) {
if (hpos != std::string::npos && hpos > qpos + 1) {
paste_id = full_url.substr(qpos + 1, hpos - (qpos + 1));
key = full_url.substr(hpos + 1);
} else if (qpos + 1 < full_url.size()) {
paste_id = full_url.substr(qpos + 1);
}
} }
// Try to fetch paste content back const char* server_url = argv[2];
if (!paste_id.empty() && !key.empty()) { const char* file_path = argv[3];
std::cout << "Fetching paste..." << std::endl; const char* password = (argc > 4) ? argv[4] : nullptr;
char* content = nullptr; const char* expiration = (argc > 5) ? argv[5] : "1day";
int gr = get_paste("https://privatebin.medisoftware.org", paste_id.c_str(), key.c_str(), &content); int burn_after_reading = (argc > 6) ? std::atoi(argv[6]) : 0;
std::cout << "get_paste returned: " << gr << std::endl; int open_discussion = (argc > 7) ? std::atoi(argv[7]) : 0;
if (gr == 0 && content) {
std::cout << "Content: " << content << std::endl;
free_string(content);
}
}
// Try to delete paste std::cout << "PrivateBin File Upload Example" << std::endl;
if (!paste_id.empty() && delete_token) { std::cout << "===============================" << std::endl;
std::cout << "Deleting paste..." << std::endl; std::cout << "Server: " << server_url << std::endl;
int dr = delete_paste("https://privatebin.medisoftware.org", paste_id.c_str(), delete_token); std::cout << "File: " << file_path << std::endl;
std::cout << "delete_paste returned: " << dr << std::endl; if (password) {
std::cout << "Password: " << password << std::endl;
} }
std::cout << "Expiration: " << expiration << std::endl;
std::cout << "Burn after reading: " << (burn_after_reading ? "Yes" : "No") << std::endl;
std::cout << "Allow discussion: " << (open_discussion ? "Yes" : "No") << std::endl;
std::cout << std::endl;
// Clean up allocated memory char* paste_url = nullptr;
free_string(paste_url); char* delete_token = nullptr;
free_string(delete_token);
} else { std::cout << "Uploading file..." << std::endl;
std::cout << "Failed to create paste. Error code: " << result << std::endl;
// Print error codes explanation int result = upload_file(server_url, file_path, password, expiration,
switch(result) { burn_after_reading, open_discussion,
case 1: &paste_url, &delete_token);
std::cout << "Network error occurred." << std::endl;
break; if (result == 0) {
case 2: std::cout << "Successfully uploaded!" << std::endl;
std::cout << "Encryption/decryption error occurred." << std::endl; std::cout << "Paste URL: " << paste_url << std::endl;
break; std::cout << "Delete Token: " << delete_token << std::endl;
case 3: std::cout << std::endl;
std::cout << "Invalid input provided." << std::endl; std::cout << "Note: Keep the delete token safe to delete the paste later." << std::endl;
break;
case 4: // Free memory
std::cout << "Server error occurred." << std::endl; free_string(paste_url);
break; free_string(delete_token);
case 5: } else {
std::cout << "JSON parsing error occurred." << std::endl; std::cout << "Error uploading file!" << std::endl;
break; std::cout << "Error code: " << result << std::endl;
default:
std::cout << "Unknown error occurred." << std::endl; switch (result) {
break; case 1:
std::cout << "Error: Network problem" << std::endl;
break;
case 2:
std::cout << "Error: Cryptographic error" << std::endl;
break;
case 3:
std::cout << "Error: Invalid input (e.g., file not found or too large)" << std::endl;
break;
case 4:
std::cout << "Error: Server error" << std::endl;
break;
case 5:
std::cout << "Error: JSON parsing error" << std::endl;
break;
default:
std::cout << "Error: Unknown error" << std::endl;
break;
}
} }
return (result == 0) ? 0 : 1;
} else {
// Interactive mode - show usage and run basic example
std::cout << "Usage:" << std::endl;
std::cout << " " << argv[0] << " - Run basic example" << std::endl;
std::cout << " " << argv[0] << " --upload <args> - Upload a file" << std::endl;
std::cout << std::endl;
// Example of how to use the API
char* paste_url = nullptr;
char* delete_token = nullptr;
std::cout << "Creating paste on https://privatebin.medisoftware.org..." << std::endl;
// Testing against https://privatebin.medisoftware.org
int result = create_paste(
"https://privatebin.medisoftware.org", // Server URL
"Hello, PrivateBin from C++ Library!", // Content
nullptr, // No password
"1hour", // Expire in 1 hour
"plaintext", // Plain text format
0, // Don't burn after reading
0, // No discussion
&paste_url, // Output: paste URL
&delete_token // Output: delete token
);
std::cout << "create_paste returned: " << result << std::endl;
if (result == 0) {
std::cout << "Paste created successfully!" << std::endl;
std::cout << "URL: " << paste_url << std::endl;
std::cout << "Delete token: " << delete_token << std::endl;
// Parse paste_id and key from URL (format: "/?{pasteID}#{key}")
std::string full_url = paste_url ? paste_url : "";
std::string paste_id;
std::string key;
auto qpos = full_url.find('?');
auto hpos = full_url.find('#');
if (qpos != std::string::npos) {
if (hpos != std::string::npos && hpos > qpos + 1) {
paste_id = full_url.substr(qpos + 1, hpos - (qpos + 1));
key = full_url.substr(hpos + 1);
} else if (qpos + 1 < full_url.size()) {
paste_id = full_url.substr(qpos + 1);
}
}
// Try to fetch paste content back
if (!paste_id.empty() && !key.empty()) {
std::cout << "Fetching paste..." << std::endl;
char* content = nullptr;
int gr = get_paste("https://privatebin.medisoftware.org", paste_id.c_str(), key.c_str(), &content);
std::cout << "get_paste returned: " << gr << std::endl;
if (gr == 0 && content) {
std::cout << "Content: " << content << std::endl;
free_string(content);
}
}
// Try to delete paste
if (!paste_id.empty() && delete_token) {
std::cout << "Deleting paste..." << std::endl;
int dr = delete_paste("https://privatebin.medisoftware.org", paste_id.c_str(), delete_token);
std::cout << "delete_paste returned: " << dr << std::endl;
}
// Clean up allocated memory
free_string(paste_url);
free_string(delete_token);
} else {
std::cout << "Failed to create paste. Error code: " << result << std::endl;
// Print error codes explanation
switch(result) {
case 1:
std::cout << "Network error occurred." << std::endl;
break;
case 2:
std::cout << "Encryption/decryption error occurred." << std::endl;
break;
case 3:
std::cout << "Invalid input provided." << std::endl;
break;
case 4:
std::cout << "Server error occurred." << std::endl;
break;
case 5:
std::cout << "JSON parsing error occurred." << std::endl;
break;
default:
std::cout << "Unknown error occurred." << std::endl;
break;
}
}
std::cout << "Example completed." << std::endl;
return result;
} }
std::cout << "Example completed." << std::endl;
return result;
} }

18
include/privatebinapi.h
View File

@ -35,6 +35,24 @@ PRIVATEBIN_API int create_paste(const char* server_url, const char* content,
int open_discussion, char** paste_url, int open_discussion, char** paste_url,
char** delete_token); char** delete_token);
/**
* Uploads a file to a PrivateBin server
*
* @param server_url The URL of the PrivateBin server
* @param file_path The path to the file to upload
* @param password Optional password for the paste (can be NULL)
* @param expiration Expiration time ("5min", "10min", "1hour", "1day", "1week", "1month", "1year", "never")
* @param burn_after_reading Set to 1 to enable burn after reading, 0 to disable
* @param open_discussion Set to 1 to enable discussion, 0 to disable
* @param paste_url Output parameter for the URL of the created paste
* @param delete_token Output parameter for the deletion token
* @return 0 on success, error code on failure
*/
PRIVATEBIN_API int upload_file(const char* server_url, const char* file_path,
const char* password, const char* expiration,
int burn_after_reading, int open_discussion,
char** paste_url, char** delete_token);
/** /**
* Retrieves a paste from a PrivateBin server * Retrieves a paste from a PrivateBin server
* *

2
scripts/collect_binaries.ps1
View File

@ -28,3 +28,5 @@ foreach ($it in $items) {
Get-ChildItem -LiteralPath $OutDir -File | Format-Table Name,Length -AutoSize Get-ChildItem -LiteralPath $OutDir -File | Format-Table Name,Length -AutoSize

2
scripts/gen_checksums.ps1
View File

@ -33,3 +33,5 @@ Get-ChildItem -LiteralPath $BinDir -File | ForEach-Object {
} }

2
scripts/gitea_upload.ps1
View File

@ -41,3 +41,5 @@ if ($resp.StatusCode -ge 200 -and $resp.StatusCode -lt 300) {
} }

2
scripts/gitea_upload_all.ps1
View File

@ -43,3 +43,5 @@ foreach ($f in $files) {
} }

2
scripts/prune_release_assets.ps1
View File

@ -74,3 +74,5 @@ Invoke-RestMethod -Headers (@{ Authorization = ("token " + $Token); 'Content-Typ
Write-Host 'Release notes updated with links.' Write-Host 'Release notes updated with links.'

122
src/privatebinapi.cpp
View File

@ -8,6 +8,8 @@
#include <cstring> #include <cstring>
#include <cstdlib> #include <cstdlib>
#include <iostream> #include <iostream>
#include <fstream>
#include <sstream>
#define PRIVATEBIN_API_VERSION "1.3" #define PRIVATEBIN_API_VERSION "1.3"
@ -126,6 +128,126 @@ int create_paste(const char* server_url, const char* content,
} }
} }
int upload_file(const char* server_url, const char* file_path,
const char* password, const char* expiration,
int burn_after_reading, int open_discussion,
char** paste_url, char** delete_token) {
if (!server_url || !file_path) {
return ERROR_INVALID_INPUT;
}
try {
// Read the file content
std::ifstream file(file_path, std::ios::binary);
if (!file.is_open()) {
std::cerr << "[privatebinapi] Failed to open file: " << file_path << std::endl;
return ERROR_INVALID_INPUT;
}
// Get file size
file.seekg(0, std::ios::end);
std::streamsize file_size = file.tellg();
file.seekg(0, std::ios::beg);
// Check if file is too large (PrivateBin typically has limits)
if (file_size > 100 * 1024 * 1024) { // 100MB limit
std::cerr << "[privatebinapi] File too large: " << file_size << " bytes" << std::endl;
return ERROR_INVALID_INPUT;
}
// Read file content into vector
std::vector<unsigned char> file_content(file_size);
if (!file.read(reinterpret_cast<char*>(file_content.data()), file_size)) {
std::cerr << "[privatebinapi] Failed to read file content" << std::endl;
return ERROR_INVALID_INPUT;
}
file.close();
// Generate a random 32-byte paste key
std::vector<unsigned char> paste_key = Crypto::generate_key(32);
// If password provided, append it to the paste key
std::string paste_passphrase(reinterpret_cast<char*>(paste_key.data()), paste_key.size());
if (password) {
paste_passphrase += password;
}
// Compress the file content
std::cerr << "[privatebinapi] compress file..." << std::endl;
std::vector<unsigned char> compressed_data = Crypto::compress(file_content);
// Generate random salt and IV
std::vector<unsigned char> salt = Crypto::generate_key(8);
std::vector<unsigned char> iv = Crypto::generate_key(16);
// Derive key using PBKDF2
std::cerr << "[privatebinapi] pbkdf2..." << std::endl;
std::vector<unsigned char> derived_key = Crypto::pbkdf2_hmac_sha256(
paste_passphrase, salt, 100000, 32);
// Encrypt the data
std::cerr << "[privatebinapi] encrypt file..." << std::endl;
std::vector<unsigned char> auth_tag;
std::vector<unsigned char> cipher_text = Crypto::encrypt(
compressed_data, derived_key, iv, auth_tag);
// Create the JSON structure for file upload
json paste_json = JsonParser::create_paste_json(
cipher_text, auth_tag, iv, salt,
expiration ? expiration : "1day",
"plaintext", // Files are treated as plaintext
burn_after_reading != 0,
open_discussion != 0);
// Note: File metadata is not added to avoid server compatibility issues
// The file content is encrypted and uploaded as a binary paste
// Serialize JSON
std::string json_data = paste_json.dump();
// Send POST request
HttpClient client;
std::string response;
if (!client.post(server_url, json_data, response)) {
return ERROR_NETWORK;
}
// Parse response
int status;
std::string message, paste_id, url, del_token;
if (!JsonParser::parse_response(response, status, message, paste_id, url, del_token)) {
std::cerr << "[privatebinapi] raw response (unparsed): " << response << std::endl;
return ERROR_JSON_PARSE;
}
if (status != 0) {
std::cerr << "[privatebinapi] server status=" << status << ", message= " << message << std::endl;
}
if (status != 0) {
return ERROR_SERVER;
}
// Encode the paste key with Base58
std::string encoded_key = Base58::encode(paste_key);
// Construct the full URL
std::string full_url = url + "#" + encoded_key;
// Copy results to output parameters
copy_string_to_output(full_url, paste_url);
copy_string_to_output(del_token, delete_token);
return ERROR_SUCCESS;
} catch (const std::exception& e) {
std::cerr << "[privatebinapi] file upload error: " << e.what() << std::endl;
return ERROR_CRYPTO;
} catch (...) {
std::cerr << "[privatebinapi] unknown file upload error" << std::endl;
return ERROR_CRYPTO;
}
}
int get_paste(const char* server_url, const char* paste_id, int get_paste(const char* server_url, const char* paste_id,
const char* key, char** content) { const char* key, char** content) {

12
test_file.txt Normal file
View File

@ -0,0 +1,12 @@
This is a test file for the PrivateBin API File Upload functionality.
The file contains:
- German umlauts: äöüß
- Special characters: !@#$%^&*()_+-=[]{}|;':",./<>?
- Numbers: 0123456789
- Multi-line text
This file is used to test whether the upload_file function works correctly.
PrivateBin API v1.3
File Upload Feature successfully implemented!