159 lines
6.5 KiB
Bash
159 lines
6.5 KiB
Bash
#!/bin/sh
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# Created by Jacob Hrbek <kreyren@rixotstudio.cz> under license GPL-3 (https://www.gnu.org/licenses/gpl-3.0.en.html)
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# Based in part on https://github.com/JesterOrNot/Gitpod-V which is created by Sean Hellum as unlicense
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: "
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Initialization script made for gitpod to install vlang backend in gitpod
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This script is developed to be POSIX-compatible
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Use environment variable '$DEBUG' to output verbose info
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CONFIGURATION
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- $VLANG_SOURCE = Path used for extraction and keeping of vlang source files
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- $VLANG_VERSION = Expected vlang version (value 'latest' is supported through GitHub API)
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- $VLANG_GROUP = Group used for those that are expected to have access in vlang
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- $CACHEDIR = Path for cache directory, based on FSH3.0 (270120) this should be '$HOME/.cache'
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- $VLANG_EXE = Path to which we will extract executable for vlang
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"
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# Configuration
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[ -z "$VLANG_SOURCE" ] && VLANG_SOURCE="/opt/vlang"
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[ -z "$VLANG_VERSION" ] && VLANG_VERSION="0.1.24"
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[ -z "$VLANG_GROUP" ] && VLANG_GROUP="vlang"
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[ -z "$CACHEDIR" ] && CACHEDIR="$HOME/.cache"
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[ -z "$VLANG_EXE" ] && VLANG_EXE="/usr/bin/v"
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# Simplified die for assertion
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die() {
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[ -z "$DIE_PREFIX" ] && DIE_PREFIX="FATAL:"
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printf "$DIE_PREFIX %s\\n" "$2"
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unset VLANG_SOURCE VLANG_VERSION DIE_PREFIX CACHEDIR VLANG_EXE
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exit "$1"
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}
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edebug() {
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[ -z "$DEBUG_PREFIX" ] && DEBUG_PREFIX="DEBUG:"
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[ -n "$DEBUG" ] && printf "$DEBUG_PREFIX %s\\n" "$1"
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}
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# checkroot
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if [ "$(id -u)" != "0" ]; then
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die 3 "Insufficient permission UID '$(id -u)' used for vlang initialization"
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elif [ "$(id -u)" = "0" ]; then
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edebug "Script has been executed from expected used with UID '$(id -u)'"
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else
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die 256 "Unexpected happend while checking root"
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fi
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# Define latest version
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case "$VLANG_VERSION" in
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[0-9].[0-9].[0-9]|[0-9][0-9].[0-9].[0-9]|[0-9][0-9].[0-9][0-9].[0-9]|[0-9][0-9].[0-9][0-9].[0-9][0-9]|[0-9].[0-9][0-9].[0-9]|[0-9].[0-9].[0-9][0-9]) true ;;
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latest)
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VLANG_VERSION="$(curl https://api.github.com/repos/vlang/v/releases/latest 2>/dev/null | grep tag_name | sed '/^[[:blank:]]*"tag_name":[[:blank:]]*"\([^"]*\)",[[:blank:]]*$/!d; s//\1/; q' || die 4 "Unable to get latest vlang version for GitHub API")" ;;
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*) die 2 "Unsupported vlang version '$VLANG_VERSION' has been parsed in vlang_init script"
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esac
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# Create cachedir
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if [ ! -d "$CACHEDIR" ]; then
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mkdir "$CACHEDIR" || die 1 "Unable to make a new directory in '$HOME/.cache' used for caching"
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edebug "Created a new directory in '$CACHEDIR' used for caching"
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elif [ -d "$CACHEDIR" ]; then
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edebug "Directory '$CACHEDIR' already exits, skipping creation"
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else
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die 256 "Unexpected happend while creating chachedir, bug?"
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fi
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# Fetch
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if [ ! -f "$CACHEDIR/vlang-$VLANG_VERSION.zip" ]; then
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wget "https://github.com/vlang/v/releases/download/$VLANG_VERSION/v_linux.zip" -O "$CACHEDIR/vlang-$VLANG_VERSION.zip" || die 1 "Unable to fetch vlang tarball"
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edebug "Vlang source tarball has been exported in '$CACHEDIR/vlang-$VLANG_VERSION.zip'"
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elif [ -f "$CACHEDIR/vlang-$VLANG_VERSION.zip" ]; then
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edebug "File '$CACHEDIR/vlang-$VLANG_VERSION.zip' already exists, skipping fetch"
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else
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die 256 "Unexpected happend while fetching vlang source tarball in '$CACHEDIR/vlang-$VLANG_VERSION'"
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fi
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# Create a new directory used for source files
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if [ ! -d "$VLANG_SOURCE" ]; then
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mkdir "$VLANG_SOURCE" || die 1 "Unable to create a new directory for source extraction of vlang"
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edebug "Created a new directory in '$VLANG_SOURCE' used for vlang source files"
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elif [ -d "$VLANG_SOURCE" ]; then
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edebug "Directory in '$VLANG_SOURCE' is already present, skipping creation"
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else
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die 256 "Unexpected happend while creating a new directory in '$VLANG_SOURCE'"
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fi
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# Extract
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if [ ! -f "$VLANG_SOURCE/Makefile" ]; then
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unzip "$CACHEDIR/vlang-$VLANG_VERSION.zip" -d "$VLANG_SOURCE" || die 1 "Unable to extract vlang source in '$VLANG_SOURCE' directory"
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edebug "vlang source files has been extracted in '$VLANG_SOURCE'"
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elif [ -f "$VLANG_SOURCE/Makefile" ]; then
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edebug "vlang source files are already extracted, skipping extract"
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else
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die 256 "Unexpected happend while extracting vlang source files"
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fi
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# Compile
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if [ ! -f "$VLANG_SOURCE/v" ]; then
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make -C "$VLANG_SOURCE" || die 1 "This system is unable to compile vlang"
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edebug "vlang has been sucessfully compiled"
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elif [ -f "$VLANG_SOURCE/v" ]; then
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edebug "vlang is already compiled, skipping compilation"
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else
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die 256 "Unexpected happend while compiling vlang source files"
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fi
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# Export executable
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if [ ! -h "$VLANG_EXE" ] && [ ! -f "$VLANG_EXE" ]; then
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ln -sf "$VLANG_SOURCE/v" "$VLANG_EXE" || die 1 "Unable to symlink vlang executable in '$VLANG_EXE'"
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edebug "Vlang executable has been sucessfully symlinked"
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elif [ -f "$VLANG_EXE" ]; then
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die 1 "Pathname '$VLANG_EXE' is a file where symlink to compiled vlang compiler is expected"
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elif [ -h "$VLANG_EXE" ]; then
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edebug "Vlang executable is already symlinked, skipping.."
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fi
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# Create a new user-group for vlang users
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if ! grep -qF vlang /etc/passwd 2>/dev/null; then
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groupadd vlang || die 1 "Unable to make a new user-group 'vlang'"
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edebug "Created a new user-group 'vlang'"
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elif grep -qF vlang /etc/passwd 2>/dev/null; then
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edebug "User-group 'vlang' already exists, skipping creation"
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else
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die 256 "Unexpected happend while creating new user-group 'vlang'"
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fi
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# Transfer ownership of VLANG_SOURCE to vlang user-group
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if [ "$(stat -c '%G' "$VLANG_SOURCE")" != vlang ]; then
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chown -R root:vlang "$VLANG_SOURCE" || die 1 "Unable to transfer ownership of '$VLANG_SOURCE' directory to vlang user-group"
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edebug "Permission to '$VLANG_SOURCE' directory has been transfered to vlang user-group"
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elif [ "$(stat -c '%G' "$VLANG_SOURCE")" = vlang ]; then
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edebug "Directory '$VLANG_SOURCE' is already owned by 'vlang' user-group"
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else
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die 256 "Unexpected happend while transfering '$VLANG_SOURCE' directory to 'vlang' user-group"
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fi
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# Add gitpod user in vlang group
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if ! groups | grep -qF "$VLANG_GROUP"; then
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usermod -a -G "$VLANG_GROUP" gitpod || die 1 "Unable to transfer user 'gitpod' in user-group '$VLANG_GROUP'"
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chmod -R 0775 "$VLANG_SOURCE" || die 1 "Unable to set ownership to '$VLANG_SOURCE"
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edebug "User 'gitpod' has been added in user-group '$VLANG_GROUP'"
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elif groups | grep -qF $VLANG_GROUP; then
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edebug "User 'gitpod' is already in user-group '$VLANG_GROUP'"
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else
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die 256 "Unexpected happend while adding user 'gitpod' in user-group '$VLANG_GROUP'"
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fi
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# Selfcheck
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# FIXME: Fix selfcheck
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# su gitpod -c "$VLANG_EXE" help 1>/dev/null
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# case "$?" in
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# 0) printf 'INFO: %s\n' "builtin vlang selfcheck passed" ;;
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# *) die "$?" "builtin vlang selfcheck failed"
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# esac
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# Master unset
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unset VLANG_SOURCE VLANG_VERSION DIE_PREFIX CACHEDIR VLANG_EXE
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