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platform.go
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platform.go
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package main
import (
"crypto/sha1"
"encoding/hex"
"fmt"
"io"
"io/ioutil"
"net/http"
"os"
"strings"
"gopkg.in/inconshreveable/log15.v2"
)
var srcPlatform = Platform{"", ""}
var defaultPlatforms = []Platform{
Platform{"linux", "386"},
Platform{"linux", "amd64"},
Platform{"freebsd", "amd64"},
Platform{"darwin", "amd64"},
Platform{"windows", "386"},
Platform{"windows", "amd64"},
}
const (
oldDistURL = "https://go.googlecode.com/files/go%s.%s.tar.gz"
distURL = "https://storage.googleapis.com/golang/go%s.%s.tar.gz"
lastOldDistVersion = "1.2.1"
lastOldDarwinVersion = "1.4.2"
)
type Platform struct {
OS string
Arch string
}
func (p *Platform) String() string {
if p.OS == "" && p.Arch == "" {
return "src"
}
return p.OS + "_" + p.Arch
}
func (p *Platform) Download(version string) (path string, err error) {
url := p.distURL(version)
lg := Log.New("plat", p.String(), "url", url)
lg.Info("start download")
resp, err := http.Get(url)
if err != nil {
return
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
return "", fmt.Errorf("Bad response for download (%s): %v", url, resp.StatusCode)
}
archive, err := download(lg, resp.Body, p.String(), checksums[url])
if err != nil {
return "", err
}
defer os.Remove(archive.Name())
defer archive.Close()
if _, err := archive.Seek(0, os.SEEK_SET); err != nil {
return "", err
}
path, err = ioutil.TempDir(".", p.String()+"-")
if err != nil {
return
}
var unpackFn func(string, *os.File) error
switch {
case strings.HasSuffix(url, ".zip"):
unpackFn = unpackZip
case strings.HasSuffix(url, ".tar.gz"):
unpackFn = unpackTarGz
default:
return "", fmt.Errorf("Unknown archive type for URL: %v", url)
}
if err := unpackFn(path, archive); err != nil {
lg.Error("unpack error", "err", err)
return "", err
}
lg.Info("download complete")
return path, nil
}
func (p *Platform) distURL(version string) string {
template := distURL
if version <= lastOldDistVersion {
template = oldDistURL
}
distString := p.OS + "-" + p.Arch
// special cases
switch {
case p.OS == "darwin" && version <= lastOldDarwinVersion:
distString += "-osx10.8"
case p.OS == "" && p.Arch == "":
distString = "src"
}
s := fmt.Sprintf(template, version, distString)
if p.OS == "windows" {
s = strings.Replace(s, ".tar.gz", ".zip", 1)
}
return s
}
func download(lg log15.Logger, rd io.Reader, name string, checksum string) (*os.File, error) {
f, err := ioutil.TempFile(".", name+"-")
if err != nil {
return nil, err
}
defer func() {
if err != nil {
f.Close()
os.Remove(f.Name())
}
}()
sha := sha1.New()
wr := io.MultiWriter(f, sha)
if _, err := io.Copy(wr, rd); err != nil {
return nil, err
}
if checksum == "" {
lg.Warn("no checksum for URL")
} else if actual := hex.EncodeToString(sha.Sum(nil)); actual != checksum {
lg.Error("checksum mismatch", "expected", checksum, "got", actual)
return nil, fmt.Errorf("checksum mismatch: %v/%v", actual, checksum)
}
return f, nil
}
var checksums = map[string]string{
"https://storage.googleapis.com/golang/go1.4.3.src.tar.gz": "486db10dc571a55c8d795365070f66d343458c48",
"https://storage.googleapis.com/golang/go1.4.3.darwin-amd64.tar.gz": "945666c36b42bf859d98775c4f02f807a5bdb6b0",
"https://storage.googleapis.com/golang/go1.4.3.darwin-amd64.pkg": "3d91a21e3217370b80ca26e89a994e8199d583e7",
"https://storage.googleapis.com/golang/go1.4.3.freebsd-amd64.tar.gz": "573217c097f78143ea7c54212445c31944750144",
"https://storage.googleapis.com/golang/go1.4.3.linux-386.tar.gz": "405777725abe566989cdb436d2efeb2667be670f",
"https://storage.googleapis.com/golang/go1.4.3.linux-amd64.tar.gz": "332b64236d30a8805fc8dd8b3a269915b4c507fe",
"https://storage.googleapis.com/golang/go1.4.3.windows-386.zip": "77ec9b61c1e1bf475463c62c36c395ba9d69aa9e",
"https://storage.googleapis.com/golang/go1.4.3.windows-386.msi": "cad793895b258929ee796ef9ea77855626740ecd",
"https://storage.googleapis.com/golang/go1.4.3.windows-amd64.zip": "821a6773adadd7409380addc4791771f2b057fa0",
"https://storage.googleapis.com/golang/go1.4.3.windows-amd64.msi": "5e7c6cb012cbf09242b040b84b78b5e52d980337",
"https://storage.googleapis.com/golang/go1.4.2.src.tar.gz": "460caac03379f746c473814a65223397e9c9a2f6",
"https://storage.googleapis.com/golang/go1.4.2.darwin-386-osx10.6.tar.gz": "fb3e6b30f4e1b1be47bbb98d79dd53da8dec24ec",
"https://storage.googleapis.com/golang/go1.4.2.darwin-386-osx10.8.tar.gz": "65f5610fdb38febd869aeffbd426c83b650bb408",
"https://storage.googleapis.com/golang/go1.4.2.darwin-386-osx10.6.pkg": "3ed569ce33616d5d36f963e5d7cefb55727c8621",
"https://storage.googleapis.com/golang/go1.4.2.darwin-386-osx10.8.pkg": "7f3fb2438fa0212febef13749d8d144934bb1c80",
"https://storage.googleapis.com/golang/go1.4.2.darwin-amd64-osx10.6.tar.gz": "00c3f9a03daff818b2132ac31d57f054925c60e7",
"https://storage.googleapis.com/golang/go1.4.2.darwin-amd64-osx10.8.tar.gz": "58a04b3eb9853c75319d9076df6f3ac8b7430f7f",
"https://storage.googleapis.com/golang/go1.4.2.darwin-amd64-osx10.6.pkg": "3fa5455e211a70c0a920abd53cb3093269c5149c",
"https://storage.googleapis.com/golang/go1.4.2.darwin-amd64-osx10.8.pkg": "8fde619d48864cb1c77ddc2a1aec0b7b20406b38",
"https://storage.googleapis.com/golang/go1.4.2.linux-386.tar.gz": "50557248e89b6e38d395fda93b2f96b2b860a26a",
"https://storage.googleapis.com/golang/go1.4.2.linux-amd64.tar.gz": "5020af94b52b65cc9b6f11d50a67e4bae07b0aff",
"https://storage.googleapis.com/golang/go1.4.2.windows-386.zip": "0e074e66a7816561d7947ff5c3514be96f347dc4",
"https://storage.googleapis.com/golang/go1.4.2.windows-386.msi": "e8bd3d87cb52441b2c9aee7c2c5f5ce7ffccc832",
"https://storage.googleapis.com/golang/go1.4.2.windows-amd64.zip": "91b229a3ff0a1ce6e791c832b0b4670bfc5457b5",
"https://storage.googleapis.com/golang/go1.4.2.windows-amd64.msi": "a914f3dad5521a8f658dce3e1575f3b6792975f0",
"https://storage.googleapis.com/golang/go1.4.src.tar.gz": "6a7d9bd90550ae1e164d7803b3e945dc8309252b",
"https://storage.googleapis.com/golang/go1.4.darwin-386-osx10.6.tar.gz": "ee31cd0e26245d0e48f11667e4298e2e7f54f9b6",
"https://storage.googleapis.com/golang/go1.4.darwin-386-osx10.8.tar.gz": "4d2ae2f5c0216c44e432c6044b1e1f0aea99f712",
"https://storage.googleapis.com/golang/go1.4.darwin-386-osx10.6.pkg": "05f2a1ab9d2aaae06c968fbdf1a6a9c28d380ceb",
"https://storage.googleapis.com/golang/go1.4.darwin-386-osx10.8.pkg": "81534c4eec80729b81b8e5f5889dfc2a3ba37131",
"https://storage.googleapis.com/golang/go1.4.darwin-amd64-osx10.6.tar.gz": "09621b9226abe12c2179778b015a33c1787b29d6",
"https://storage.googleapis.com/golang/go1.4.darwin-amd64-osx10.8.tar.gz": "28b2b731f86ada85246969e8ffc77d50542cdcb5",
"https://storage.googleapis.com/golang/go1.4.darwin-amd64-osx10.6.pkg": "29271b54d3ce7108270a9b7b64342950026704bf",
"https://storage.googleapis.com/golang/go1.4.darwin-amd64-osx10.8.pkg": "2043aaf5c1363e483c6042f8685acd70ec9e41f8",
"https://storage.googleapis.com/golang/go1.4.freebsd-386.tar.gz": "36c5cc2ebef4b4404b12f2b5f2dfd23d73ecdbcc",
"https://storage.googleapis.com/golang/go1.4.freebsd-amd64.tar.gz": "9441745b9c61002feedee8f0016c082b56319e44",
"https://storage.googleapis.com/golang/go1.4.linux-386.tar.gz": "cb18d8122bfd3bbba20fa1a19b8f7566dcff795d",
"https://storage.googleapis.com/golang/go1.4.linux-amd64.tar.gz": "cd82abcb0734f82f7cf2d576c9528cebdafac4c6",
"https://storage.googleapis.com/golang/go1.4.windows-386.zip": "f44240a1750dd051476ae78e9ad0502bc5c7661d",
"https://storage.googleapis.com/golang/go1.4.windows-386.msi": "b26151702cba760d6eec94214c457bee01f6d859",
"https://storage.googleapis.com/golang/go1.4.windows-amd64.zip": "44f103d558b293919eb680041625c262dd00eb9a",
"https://storage.googleapis.com/golang/go1.4.windows-amd64.msi": "359124f2bba4c59df1eb81d11e16e388d0a996f9",
"https://storage.googleapis.com/golang/go1.3.3.src.tar.gz": "b54b7deb7b7afe9f5d9a3f5dd830c7dede35393a",
"https://storage.googleapis.com/golang/go1.3.3.darwin-386-osx10.6.tar.gz": "04b3e38549183e984f509c07ad40d8bcd577a702",
"https://storage.googleapis.com/golang/go1.3.3.darwin-386-osx10.8.tar.gz": "88f35d3327a84107aac4f2f24cb0883e5fdbe0e5",
"https://storage.googleapis.com/golang/go1.3.3.darwin-386-osx10.6.pkg": "49756b700670ae4109e555f2e5f9bedbaa3c50da",
"https://storage.googleapis.com/golang/go1.3.3.darwin-386-osx10.8.pkg": "a89b570a326e5f8c9509f40be9fa90e54b3bf7a7",
"https://storage.googleapis.com/golang/go1.3.3.darwin-amd64-osx10.6.tar.gz": "dfe68de684f6e8d9c371d01e6d6a522efe3b8942",
"https://storage.googleapis.com/golang/go1.3.3.darwin-amd64-osx10.8.tar.gz": "be686ec7ba68d588735cc2094ccab8bdd651de9e",
"https://storage.googleapis.com/golang/go1.3.3.darwin-amd64-osx10.6.pkg": "9aec7e9eff11100a6db026d1b423d1250925e4c4",
"https://storage.googleapis.com/golang/go1.3.3.darwin-amd64-osx10.8.pkg": "6435e50059fe7fa0d60f1b15aab7f255a61816ce",
"https://storage.googleapis.com/golang/go1.3.3.freebsd-386.tar.gz": "875a5515dd7d3e5826c7c003bb2450f3129ccbad",
"https://storage.googleapis.com/golang/go1.3.3.freebsd-amd64.tar.gz": "8531ae5e745c887f8dad1a3f00ca873cfcace56e",
"https://storage.googleapis.com/golang/go1.3.3.linux-386.tar.gz": "9eb426d5505de55729e2656c03d85722795dd85e",
"https://storage.googleapis.com/golang/go1.3.3.linux-amd64.tar.gz": "14068fbe349db34b838853a7878621bbd2b24646",
"https://storage.googleapis.com/golang/go1.3.3.windows-386.zip": "ba99083b22e0b22b560bb2d28b9b99b405d01b6b",
"https://storage.googleapis.com/golang/go1.3.3.windows-386.msi": "6017a0e1667a5a41109f527b405bf6e0c83580f5",
"https://storage.googleapis.com/golang/go1.3.3.windows-amd64.zip": "5f0b3b104d3db09edd32ef1d086ba20bafe01ada",
"https://storage.googleapis.com/golang/go1.3.3.windows-amd64.msi": "25112a8c4df93dc4009e65eff00bc4ef76f94e46",
"https://storage.googleapis.com/golang/go1.3.2.src.tar.gz": "67d3a692588c259f9fe9dca5b80109e5b99271df",
"https://storage.googleapis.com/golang/go1.3.2.darwin-386-osx10.6.tar.gz": "d1652f6e0ed3063b7b43d2bc12981d927bc85deb",
"https://storage.googleapis.com/golang/go1.3.2.darwin-386-osx10.8.tar.gz": "d040c85698c749fdbe25e8568c4d71648a5e3a75",
"https://storage.googleapis.com/golang/go1.3.2.darwin-386-osx10.6.pkg": "d20375615cf8e36e3c9a9b6ddeef16eff7a4ea89",
"https://storage.googleapis.com/golang/go1.3.2.darwin-386-osx10.8.pkg": "f11930cfb032d39ab445f342742865c93c60ec14",
"https://storage.googleapis.com/golang/go1.3.2.darwin-amd64-osx10.6.tar.gz": "36ca7e8ac9af12e70b1e01182c7ffc732ff3b876",
"https://storage.googleapis.com/golang/go1.3.2.darwin-amd64-osx10.8.tar.gz": "323bf8088614d58fee2b4d2cb07d837063d7d77e",
"https://storage.googleapis.com/golang/go1.3.2.darwin-amd64-osx10.6.pkg": "e1529241fcef643e5f752c37dc4c86911df91338",
"https://storage.googleapis.com/golang/go1.3.2.darwin-amd64-osx10.8.pkg": "fd8637658fcb133423e794c44029ce3476b48e0c",
"https://storage.googleapis.com/golang/go1.3.2.freebsd-386.tar.gz": "fea3ef264120b5c3b4c50a8929d56f47a8366503",
"https://storage.googleapis.com/golang/go1.3.2.freebsd-amd64.tar.gz": "95b633f45156fbbe79076638f854e76b9cd01301",
"https://storage.googleapis.com/golang/go1.3.2.linux-386.tar.gz": "3cbfd62d401a6ca70779856fa8ad8c4d6c35c8cc",
"https://storage.googleapis.com/golang/go1.3.2.linux-amd64.tar.gz": "0e4b6120eee6d45e2e4374dac4fe7607df4cbe42",
"https://storage.googleapis.com/golang/go1.3.2.windows-386.zip": "86160c478436253f51241ac1905577d337577ce0",
"https://storage.googleapis.com/golang/go1.3.2.windows-386.msi": "589c35f9ad3506c92aa944130f6a950ce9ee558b",
"https://storage.googleapis.com/golang/go1.3.2.windows-amd64.zip": "7f7147484b1bc9e52cf034de816146977d0137f6",
"https://storage.googleapis.com/golang/go1.3.2.windows-amd64.msi": "a697fff05cbd4a4d902f6c33f7c42588bcc474bc",
"https://storage.googleapis.com/golang/go1.3.1.src.tar.gz": "bc296c9c305bacfbd7bff9e1b54f6f66ae421e6e",
"https://storage.googleapis.com/golang/go1.3.1.darwin-386-osx10.6.tar.gz": "84f70a4c83be24cea696654a5b55331ea32f8a3f",
"https://storage.googleapis.com/golang/go1.3.1.darwin-386-osx10.8.tar.gz": "244dfba1f4239b8e2eb9c3abae5ad63fc32c807a",
"https://storage.googleapis.com/golang/go1.3.1.darwin-386-osx10.6.pkg": "16e0df7b90d49c8499f71a551af8b595e2faa961",
"https://storage.googleapis.com/golang/go1.3.1.darwin-386-osx10.8.pkg": "13296cd9a980819bf2304d7d24a38a1b39719c13",
"https://storage.googleapis.com/golang/go1.3.1.darwin-amd64-osx10.6.tar.gz": "40716361d352c4b40252e79048e8bc084c3f3d1b",
"https://storage.googleapis.com/golang/go1.3.1.darwin-amd64-osx10.8.tar.gz": "a7271cbdc25173d0f8da66549258ff65cca4bf06",
"https://storage.googleapis.com/golang/go1.3.1.darwin-amd64-osx10.6.pkg": "49bf5f14d2683fb99161fcb7025af60ec2d3691f",
"https://storage.googleapis.com/golang/go1.3.1.darwin-amd64-osx10.8.pkg": "5d4728e0b3c3fd9fc657cc192c6b9fb3f837823b",
"https://storage.googleapis.com/golang/go1.3.1.freebsd-386.tar.gz": "586debe95542b3b56841f6bd2e5257e301a1ffdc",
"https://storage.googleapis.com/golang/go1.3.1.freebsd-amd64.tar.gz": "99e23fdd33860d837912e8647ed2a4b3d2b09d3c",
"https://storage.googleapis.com/golang/go1.3.1.linux-386.tar.gz": "36f87ce21cdb4cb8920bb706003d8655b4e1fc81",
"https://storage.googleapis.com/golang/go1.3.1.linux-amd64.tar.gz": "3af011cc19b21c7180f2604fd85fbc4ddde97143",
"https://storage.googleapis.com/golang/go1.3.1.windows-386.zip": "64f99e40e79e93a622e73d7d55a5b8340f07747f",
"https://storage.googleapis.com/golang/go1.3.1.windows-386.msi": "df37e307c52fbea02070e23ae0a49cb869d54f33",
"https://storage.googleapis.com/golang/go1.3.1.windows-amd64.zip": "4548785cfa3bc228d18d2d06e39f58f0e4e014f1",
"https://storage.googleapis.com/golang/go1.3.1.windows-amd64.msi": "88c5d9a51a74c2846226a08681fc28cd3469cba0",
"https://storage.googleapis.com/golang/go1.3.src.tar.gz": "9f9dfcbcb4fa126b2b66c0830dc733215f2f056e",
"https://storage.googleapis.com/golang/go1.3.darwin-386-osx10.6.tar.gz": "159d2797bee603a80b829c4404c1fb2ee089cc00",
"https://storage.googleapis.com/golang/go1.3.darwin-386-osx10.8.tar.gz": "bade975462b5610781f6a9fe8ac13031b3fb7aa6",
"https://storage.googleapis.com/golang/go1.3.darwin-386-osx10.6.pkg": "07e7142540558f432a8750eb6cb25d6b06ed80bb",
"https://storage.googleapis.com/golang/go1.3.darwin-386-osx10.8.pkg": "c908ecdb177c8a20abd61272c260b15e513f6e73",
"https://storage.googleapis.com/golang/go1.3.darwin-amd64-osx10.6.tar.gz": "82ffcfb7962ca7114a1ee0a96cac51c53061ea05",
"https://storage.googleapis.com/golang/go1.3.darwin-amd64-osx10.8.tar.gz": "8d768f10cd00e0b152490291d9cd6179a8ccf0a7",
"https://storage.googleapis.com/golang/go1.3.darwin-amd64-osx10.6.pkg": "631d6867d7f4b92b314fd87115e1cefadeeac2ab",
"https://storage.googleapis.com/golang/go1.3.darwin-amd64-osx10.8.pkg": "4e8f2cafa23797211fd13f3fa4893ce3d5f084c4",
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