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2 changes: 2 additions & 0 deletions .gitignore
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target
Cargo.lock
33 changes: 33 additions & 0 deletions Cargo.toml
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[package]
name = "arrow-client"
version = "0.3.0"
authors = ["Ondrej Perutka <ondrej.perutka@angelcam.com>"]
license = "Apache-2.0"
readme = "README.md"
build = "build.rs"

[features]
discovery = []

[dependencies]
libc = "0.2"
regex = "0.1"
mio = "0.5"
uuid = "0.1"
time = "0.1"
rustc-serialize = "0.3"

[dependencies.openssl]
version = "0.7.3"
features = ["tlsv1_2"]

[build-dependencies]
gcc = "0.3"

[profile.dev]
opt-level = 0
debug = true

[profile.release]
opt-level = 3
debug = false
202 changes: 202 additions & 0 deletions LICENSE
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Apache License
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145 changes: 145 additions & 0 deletions README.md
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# Arrow Client

Arrow Client is an application used to simplify the process of connecting IP
cameras to the Angelcam cloud services. The Arrow Client is meant to be shipped
together with IP camera firmwares or as a standalone application for various
devices such as Raspberry Pi. It can connect to RTSP services passed as
command line arguments and optionally, it can be also compiled with a network
scanning feature. This feature allows the client to scan all its network
interfaces and find local RTSP services automatically. All such RTSP services
can be registered within Angelcam cloud services under your Angelcam account
without the need of a public IP address and setting up your firewall.

## Features

- Automatic RTSP service discovery
- Zero-conf IP camera connection
- Connection to Angelcam cloud services secured using TLS v1.2
- Secure pairing with your Angelcam account

## Usage

The application requires `/etc/arrow` directory for storing its configuration
file generated on the first start. The directory must also contain a file named
`rtsp-paths` in case the network scanning feature is enabled. The file should
contain RTSP paths that will be checked on an RTSP service discovery. You can
use the `rtsp-paths` file from this repository. In order to start the
application, you have to pass address of the Angelcam Arrow Service and
certificate file for the service verification. Address of the Angelcam Arrow
Service is:

```
arr-rs.angelcam.com:8900
```

Currently, a self-signed certificate is used. You can find the certificate in
this repository (file `ca.pem`). The certificate will be later replaced by
a proper CA certificate.

Here is an example of starting the Arrow Client with one fixed RTSP service and
with network scanning enabled:

```bash
arrow-client arr-rs.angelcam.com:8900 ca.pem -d -r "rtsp://localhost:8554/stream.sdp?prof=baseline&res=low"
```

Note that the application requires root privileges for direct access to local
network interfaces.

## Dependencies

This application requires the following native libraries:

- OpenSSL
- libpcap (this dependency is optional, it is required only when the network
scanning feature is enabled)

and the following Rust libraries (downloaded automatically on build):

- libc
- regex
- mio
- uuid
- time
- rustc-serialize
- openssl

## Compilation

Arrow Client compilation is currently supported for x86, x86\_64 and ARM
platforms. Compilation for x86 and x86\_64 can be done directly on
a particular machine. ARM binaries can be compiled using a cross-compiler or
directly in the target or in a virtualized environment (e.g. QEMU).

### Direct compilation on x86, x86\_64 or ARM

- Download and install Rust build environment (in case you do not already
have one) from https://www.rust-lang.org/install.html.
- Use the following commands to build the Arrow Client binary:

```bash
# to build Arrow Client:
cargo build --release
# to build Arrow Client with network scanning feature:
cargo build --release --features "discovery"
```

- You will find the binary in the `target/release/` subdir.
- Run the application without any arguments to see its usage.

### Cross-compilation

First of all, you will need gcc cross-compiler. In case of ARM, you can
download it from https://github.com/raspberrypi/tools. You will also have to
add some essential libraries for the target architecture (e.g. OpenSSL).

Now, you need to get your copy of Rust:

```bash
git clone https://github.com/rust-lang/rust.git
```

Add the gcc cross-compiler into the PATH env. variable, e.g.:

```bash
export PATH=~/pi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin:$PATH
```

Then build the Rust cross-compiler, e.g.:

```bash
./configure --target=arm-unknown-linux-gnueabihf && make && make install
```

When the Rust cross-compiler is ready, you will have to modify your
cargo configuration in order to tell the Rust compiler the name of your gcc
linker for the target architecture. For `arm-unknown-linux-gnueabihf` target,
insert the following configuration into your `~/.cargo/config`:

```toml
[target.arm-unknown-linux-gnueabihf]
ar = "arm-linux-gnueabihf-ar"
linker = "arm-linux-gnueabihf-gcc"
```

Finally, set CC env. variable to the path of your gcc cross-compiler, e.g.:

```bash
export CC=~/pi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-gcc
```

and add libraries for the target architecture into the LD_LIBRARY_PATH env.
variable, e.g.:

```bash
export LD_LIBRARY_PATH=~/pi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/lib:$LD_LIBRARY_PATH
```

Now, you are ready to build the Arrow Client for the target architecture, e.g.:

```bash
# to build Arrow Client:
cargo build --target=arm-unknown-linux-gnueabihf --release
# to build Arrow Client with network scanning feature:
cargo build --target=arm-unknown-linux-gnueabihf --release --features "discovery"
```

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