mirror of
https://gitea.com/Lydanne/buildx.git
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589d4e4cf5
BuildKit's gitutil package behaves slightly differently than moby's urlutil, so we should rely on BuildKit's gitutil when detecting URLs to avoid cases of accidentally producing invalid build requests that can confuse users. Signed-off-by: Justin Chadwell <me@jedevc.com>
92 lines
2.2 KiB
Go
92 lines
2.2 KiB
Go
package build
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import (
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"archive/tar"
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"bytes"
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"net"
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"os"
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"strings"
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"github.com/docker/cli/opts"
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"github.com/docker/docker/builder/remotecontext/urlutil"
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"github.com/moby/buildkit/util/gitutil"
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"github.com/pkg/errors"
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)
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const (
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// archiveHeaderSize is the number of bytes in an archive header
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archiveHeaderSize = 512
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// mobyHostGatewayName defines a special string which users can append to
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// --add-host to add an extra entry in /etc/hosts that maps
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// host.docker.internal to the host IP
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mobyHostGatewayName = "host-gateway"
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)
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func IsRemoteURL(c string) bool {
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if urlutil.IsURL(c) {
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return true
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}
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if _, err := gitutil.ParseGitRef(c); err == nil {
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return true
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}
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return false
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}
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func isLocalDir(c string) bool {
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st, err := os.Stat(c)
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return err == nil && st.IsDir()
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}
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func isArchive(header []byte) bool {
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for _, m := range [][]byte{
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{0x42, 0x5A, 0x68}, // bzip2
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{0x1F, 0x8B, 0x08}, // gzip
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{0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00}, // xz
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} {
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if len(header) < len(m) {
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continue
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}
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if bytes.Equal(m, header[:len(m)]) {
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return true
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}
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}
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r := tar.NewReader(bytes.NewBuffer(header))
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_, err := r.Next()
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return err == nil
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}
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// toBuildkitExtraHosts converts hosts from docker key:value format to buildkit's csv format
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func toBuildkitExtraHosts(inp []string, mobyDriver bool) (string, error) {
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if len(inp) == 0 {
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return "", nil
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}
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hosts := make([]string, 0, len(inp))
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for _, h := range inp {
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host, ip, ok := strings.Cut(h, ":")
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if !ok || host == "" || ip == "" {
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return "", errors.Errorf("invalid host %s", h)
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}
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// Skip IP address validation for "host-gateway" string with moby driver
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if !mobyDriver || ip != mobyHostGatewayName {
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if net.ParseIP(ip) == nil {
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return "", errors.Errorf("invalid host %s", h)
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}
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}
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hosts = append(hosts, host+"="+ip)
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}
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return strings.Join(hosts, ","), nil
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}
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// toBuildkitUlimits converts ulimits from docker type=soft:hard format to buildkit's csv format
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func toBuildkitUlimits(inp *opts.UlimitOpt) (string, error) {
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if inp == nil || len(inp.GetList()) == 0 {
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return "", nil
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}
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ulimits := make([]string, 0, len(inp.GetList()))
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for _, ulimit := range inp.GetList() {
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ulimits = append(ulimits, ulimit.String())
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}
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return strings.Join(ulimits, ","), nil
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}
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