hcdl is a tool for easily downloading and installing HashiCorp products.
hcdl is available for install from crates.io if you have a stable Rust
toolchain of at least v1.75.0 installed.
This can be done with the standard Cargo install command:
$ cargo install hcdlBy default, hcdl will embed the HashiCorp GPG key into the binary to
facilitate ease of use when installing via Cargo.
The GPG key that will be used can be found in the gpg directory of the source
code in the hashicorp.asc file. You may verify this key against the details
given at https://www.hashicorp.com/security as detailed below.
If you do not trust the provided GPG key, you can disable the embedding when installing with the following command:
$ cargo install --no-default-features hcdlhcdl includes two features:
embed_gpg_key, which embeds the HashiCorp GPG key required to verify the signature of downloaded filesshell_completion, which adds the--completionsCLI argument to generate completions for your chosen shell
Both of these features are enabled by default. If you wished to install hcdl
without the embedded GPG key, but with shell completion generation support, you
could install as follows:
$ cargo install \
--no-default-features \
--features shell_completion \
hcdlhcdl usage is very simple, for example, if we want to download and install
the latest version of Terraform, we can run the following:
$ hcdl terraformYou'll see output like the following:
Latest version: terraform v0.15.1 from Mon, 26 Apr 2021 22:02:28 +0000
Downloading and verifying signature of terraform_0.15.1_SHA256SUMS...
Verified against terraform_0.15.1_SHA256SUMS.sig.
Downloading terraform_0.15.1_freebsd_amd64.zip...
[00:00:04] [########################################] 31.06MB/31.06MB (0s) done.
SHA256 of terraform_0.15.1_freebsd_amd64.zip OK.
Unzipping contents of 'terraform_0.15.1_freebsd_amd64.zip' to '/home/user/.local/bin'
-> Extracting 'terraform' to '/home/user/.local/bin'...
Installation successful.
hcdl has performed the following steps:
- Loaded the HashiCorp GPG key
- Found the latest version of Terraform
- Downloaded the SHA256SUMS GPG signature file
- Downloaded the SHA256SUMS file
- Verified the SHA256SUMS file against the signature
- Downloaded the latest version of Terraform
- Verified that the SHA256 of the downloaded file matches the SHA256SUMS file
- Extracted the
terraformbinary to a temporary file - Ensured that the CRC32 of the extracted temporary file matches the record in the zip file
- Installed the
terraformbinary to~/.local/binby moving the temporary file to the appropriate location - Set the appropriate permissions on the extracted binary
By default, hcdl will download products for the operating system and
architecture that it was compiled for (above we were running hcdl on an
x86_64 FreeBSD machine), however, you can download any product for any OS
and architecture you like by specifying the --os and --arch options.
Due to the GPG signature checking, hcdl needs to know the HashiCorp GPG key.
There are two ways to provide the GPG key material:
This is the default way in which the GPG key is provided.
hcdl provides the embed_gpg_key feature to compile the GPG key directly
into the application. It will use the GPG key provided at gpg/hashicorp.asc
in the source repository. You are encouraged to check the validity of this GPG
key using the steps below before using this feature.
Once you are happy that the GPG key is valid, you can compile hcdl as follows
to enable the GPG key embedding:
$ cargo build --releaseTo enable this, place a file named hashicorp.asc containing the HashiCorp GPG
key from https://www.hashicorp.com/security into an appropriate directory for
your operating system, according to the following table:
| Operating System | Path |
|---|---|
| macOS | ~/Library/Application Support/hcdl |
| Windows | %APPDATA%/hcdl |
| Other | $XDG_DATA_DIR/hcdl or ~/.local/share/hcdl |
To build hcdl with without the embedded GPG key, use the following command:
$ cargo build --release --no-default-featuresThe key you place here should match the key ID and fingerprint shown on the security page, and they can be checked as follows:
$ gpg \
--dry-run \
--import \
--import-options import-show \
hashicorp.ascWhich should result in the following output:
pub rsa4096 2021-04-19 [SC] [expires: 2026-04-18]
C874011F0AB405110D02105534365D9472D7468F
uid HashiCorp Security (hashicorp.com/security) <[email protected]>
sub rsa4096 2021-04-19 [E] [expires: 2026-04-18]
sub rsa4096 2021-04-19 [S] [expires: 2022-04-20]
sub rsa4096 2021-04-21 [S] [expires: 2026-04-20]
gpg: Total number processed: 1
At the time of writing, the GPG key stored within this repository is GPG key
ID 72D7468F with fingerprint
C874 011F 0AB4 0511 0D02 1055 3436 5D94 72D7 468F, which should match the GPG
key published by HashiCorp.
If a GPG key isn't present and you still wish to use the tool, you will be
required to explicitly disable the signature verification with the
--no-verify-signature flag. Running hcdl by disabling the GPG signature
verification is NOT recommended.
The following examples were gathered on an x86_64 FreeBSD machine.
$ hcdl --check terraform
Latest version: terraform v0.12.26 from Wed, 27 May 2020 17:17:12 +0000$ hcdl --keep terraform
Latest version: terraform v0.12.28 from Thu, 25 Jun 2020 16:21:37 +0000
Downloading and verifying signature of terraform_0.12.28_SHA256SUMS...
Verified against terraform_0.12.28_SHA256SUMS.sig.
Downloading terraform_0.12.28_freebsd_amd64.zip...
[00:00:07] [########################################] 27.07MB/27.07MB (0s) done.
SHA256 of terraform_0.12.28_freebsd_amd64.zip OK.
Unzipping contents of 'terraform_0.12.28_freebsd_amd64.zip' to '/home/user/.local/bin'
-> Extracting 'terraform' to '/home/user/.local/bin'...
Installation successful.
Keeping zipfile terraform_0.12.28_freebsd_amd64.zip in current directory.
$ hcdl --os linux terraform
Latest version: terraform v0.12.28 from Thu, 25 Jun 2020 16:21:37 +0000
Downloading and verifying signature of terraform_0.12.28_SHA256SUMS...
Verified against terraform_0.12.28_SHA256SUMS.sig.
Downloading terraform_0.12.28_linux_amd64.zip...
[00:00:04] [########################################] 27.11MB/27.11MB (0s) done.
SHA256 of terraform_0.12.28_linux_amd64.zip OK.
Product downloaded for different OS, freebsd != linux
Skipping install and keeping zipfile 'terraform_0.12.28_linux_amd64.zip' in current directory.
$ hcdl --build 0.12.25 terraform
Downloading and verifying signature of terraform_0.12.25_SHA256SUMS...
Verified against terraform_0.12.25_SHA256SUMS.sig.
Downloading terraform_0.12.25_freebsd_amd64.zip...
[00:00:03] [########################################] 15.97MB/15.97MB (0s) done.
SHA256 of terraform_0.12.25_freebsd_amd64.zip OK.
Unzipping contents of 'terraform_0.12.25_freebsd_amd64.zip' to '/home/user/.local/bin'
-> Extracting 'terraform' to '/home/user/.local/bin'...
Installation successful.
Licensed under either of
- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.