From ad4edf82adab328d3f1834aa09957ebecca52bc4 Mon Sep 17 00:00:00 2001
From: glennc <glennc@microsoft.com>
Date: Tue, 10 Nov 2015 15:34:58 -0500
Subject: [PATCH] Add install.sh to install the latest cli on a machine

---
 scripts/install.sh | 130 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 scripts/install.sh

diff --git a/scripts/install.sh b/scripts/install.sh
new file mode 100644
index 000000000..0c7a28861
--- /dev/null
+++ b/scripts/install.sh
@@ -0,0 +1,130 @@
+#!/usr/bin/env sh
+
+#setup some colors to use. These need to work in fairly limited shells, like the Ubuntu Docker container where there are only 8 colors.
+#See if stdout is a terminal
+if [ -t 1 ]; then
+    # see if it supports colors
+    ncolors=$(tput colors)
+    if [ -n "$ncolors" ] && [ $ncolors -ge 8 ]; then
+        bold="$(tput bold)"
+        normal="$(tput sgr0)"
+        black="$(tput setaf 0)"
+        red="$(tput setaf 1)"
+        green="$(tput setaf 2)"
+        yellow="$(tput setaf 3)"
+        blue="$(tput setaf 4)"
+        magenta="$(tput setaf 5)"
+        cyan="$(tput setaf 6)"
+        white="$(tput setaf 7)"
+    fi
+fi
+
+#Standardise OS name to what is put into filenames of the tarballs.
+__current_os()
+{
+    local uname=$(uname)
+    if [ "$uname" = "Darwin" ]; then
+        echo "osx"
+    else
+        echo "linux"
+    fi
+}
+
+__machine_has() {
+    type "$1" > /dev/null 2>&1
+    return $?
+}
+
+#Not 100% sure at the moment that these checks are enough. We might need to take version into account or do something
+#more complicated. This seemed like a good beginning though as it should catch the default "clean" machine case and give
+#people an appropriate hint.
+__check_pre_reqs() {
+    local os=$(__current_os)
+    local _failing=false;
+    if [ "$os" = "linux" ]; then
+        [ -z "$(ldconfig -p | grep libunwind)" ] && say_err "Unable to locate libunwind. Install libunwind to continue" && _failing=true
+        [ -z "$(ldconfig -p | grep libssl)" ] && say_err "Unable to locate libssl. Install libssl to continue" && _failing=true
+        [ -z "$(ldconfig -p | grep libcurl)" ] && say_err "Unable to locate libcurl. Install libcurl to continue" && _failing=true
+        [ -z "$(ldconfig -p | grep libicu)" ] && say_err "Unable to locate libicu. Install libicu to continue" && _failing=true
+        [ -z "$(ldconfig -p | grep gettext)" ] && say_err "Unable to locate gettext. Install libicu to gettext" && _failing=true
+    fi
+    
+    if [ "$_failing" = true ]; then
+       return 1
+    fi
+}
+
+say_err() {
+    printf "%b\n" "${red}dotnet_install: Error: $1${normal}" >&2
+}
+
+say() {
+    printf "%b\n" "dotnet_install: $1"
+}
+
+_install_dotnet()
+{
+    if ! __machine_has "curl"; then
+        printf "%b\n" "${red}curl is required to download dotnet. Install curl to proceed. ${normal}" >&2;
+        return 1
+    fi
+    
+    if [ -e "/usr/local/share/dotnet/cli/dotnet" ] && [ ! -w "/usr/local/share/dotnet/cli/dotnet" ]; then
+        say_err "It looks like you already have the dotnet cli and it isn't writeable. If you are sure that you want to install the cli over the top of the currently installed version then run this command again with sudo."
+        say_err "If you have previously installed the cli using a pkg then that is why it is write protected, and you need to run sudo to install the new version."
+        say_err "Alternatively, removing the '/usr/local/share/dotnet' directory completely before running the script will also resolve the issue."
+        return 1
+    fi
+
+    __check_pre_reqs
+    if [ $? != 0 ]; then
+        say_err "Ending install due to missing pre-reqs"
+        return 1;
+    fi
+
+    local installLocation="/usr/local/share/dotnet"
+    local dotnet_url="https://dotnetcli.blob.core.windows.net/dotnet/dev/Binaries/Latest"
+    local dotnet_filename="dotnet-$(__current_os)-x64.latest.tar.gz"
+
+    #This should noop if the directory already exists.
+    mkdir -p $installLocation
+
+    say "Downloading $dotnet_filename from $dotnet_url"
+
+    #Download file and check status code, error and return if we cannot download a cli tar.
+    local httpResult=$(curl -L -D - "$dotnet_url/$dotnet_filename" -o "$installLocation/$dotnet_filename" -# | grep "^HTTP/1.1" | head -n 1 | sed "s/HTTP.1.1 \([0-9]*\).*/\1/")
+    [ $httpResult -ne "302" ] && [ $httpResult -ne "200" ] && echo "${Red}HTTP Error $httpResult fetching the dotnet cli from $dotnet_url ${RCol}" && return 1
+
+    say "Extracting tarball"
+    #Any of these could fail for various reasons so we will check each one and end the script there if it fails.
+    rm -rf "$installLocation/cli_new"
+    mkdir "$installLocation/cli_new"
+    [ $? != 0 ] && say_err "failed to clean and create temporary cli directory to extract into" && return 1
+    
+    tar -xzf "$installLocation/$dotnet_filename" -C "$installLocation/cli_new"
+    [ $? != 0 ] && say_err "failed to extract tar" && return 1
+    
+    say "Moving new CLI into install location and symlinking"
+
+    rm -rf "$installLocation/cli"
+    [ $? != 0 ] && say_err "Failed to clean current dotnet install" && return 1
+
+    mv "$installLocation/cli_new" "$installLocation/cli"
+
+    for f in $(find "$installLocation/cli" -regex ".*/dotnet[a-z\-]*$")
+    do
+        local baseFile=$(basename $f)
+        if [ -e "/usr/local/bin/$baseFile" ]; then
+            say "${yellow}$baseFile already exists in /usr/local/bin. Skipping symlink...${normal}"
+        else
+            say "linking $baseFile"
+            ln -s $f /usr/local/bin/
+        fi
+    done
+    
+    say "Cleaning $dotnet_filename"
+    rm "$installLocation/$dotnet_filename"
+    [ $? != 0 ] && say_err "Failed to delete tar after extracting." && return 1
+}
+
+_install_dotnet
\ No newline at end of file