package handlers import ( "bytes" "encoding/base64" "encoding/json" "fmt" "io" "io/ioutil" "net/http" "os" "path/filepath" "strconv" "strings" "github.com/containers/buildah" "github.com/containers/buildah/imagebuildah" "github.com/containers/libpod/pkg/api/handlers/utils" "github.com/containers/storage/pkg/archive" ) func BuildImage(w http.ResponseWriter, r *http.Request) { authConfigs := map[string]AuthConfig{} if hdr, found := r.Header["X-Registry-Config"]; found && len(hdr) > 0 { authConfigsJSON := base64.NewDecoder(base64.URLEncoding, strings.NewReader(hdr[0])) if json.NewDecoder(authConfigsJSON).Decode(&authConfigs) != nil { utils.BadRequest(w, "X-Registry-Config", hdr[0], json.NewDecoder(authConfigsJSON).Decode(&authConfigs)) return } } if hdr, found := r.Header["Content-Type"]; found && len(hdr) > 0 { if hdr[0] != "application/x-tar" { utils.BadRequest(w, "Content-Type", hdr[0], fmt.Errorf("Content-Type: %s is not supported. Should be \"application/x-tar\"", hdr[0])) } } anchorDir, err := extractTarFile(r, w) if err != nil { utils.InternalServerError(w, err) return } defer os.RemoveAll(anchorDir) query := struct { Dockerfile string `schema:"dockerfile"` Tag string `schema:"t"` ExtraHosts string `schema:"extrahosts"` Remote string `schema:"remote"` Quiet bool `schema:"q"` NoCache bool `schema:"nocache"` CacheFrom string `schema:"cachefrom"` Pull bool `schema:"pull"` Rm bool `schema:"rm"` ForceRm bool `schema:"forcerm"` Memory int64 `schema:"memory"` MemSwap int64 `schema:"memswap"` CpuShares uint64 `schema:"cpushares"` CpuSetCpus string `schema:"cpusetcpus"` CpuPeriod uint64 `schema:"cpuperiod"` CpuQuota int64 `schema:"cpuquota"` BuildArgs string `schema:"buildargs"` ShmSize int `schema:"shmsize"` Squash bool `schema:"squash"` Labels string `schema:"labels"` NetworkMode string `schema:"networkmode"` Platform string `schema:"platform"` Target string `schema:"target"` Outputs string `schema:"outputs"` Registry string `schema:"registry"` }{ Dockerfile: "Dockerfile", Tag: "", ExtraHosts: "", Remote: "", Quiet: false, NoCache: false, CacheFrom: "", Pull: false, Rm: true, ForceRm: false, Memory: 0, MemSwap: 0, CpuShares: 0, CpuSetCpus: "", CpuPeriod: 0, CpuQuota: 0, BuildArgs: "", ShmSize: 64 * 1024 * 1024, Squash: false, Labels: "", NetworkMode: "", Platform: "", Target: "", Outputs: "", Registry: "docker.io", } if err := decodeQuery(r, &query); err != nil { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, err) return } var ( // Tag is the name with optional tag... name = query.Tag tag = "latest" ) if strings.Contains(query.Tag, ":") { tokens := strings.SplitN(query.Tag, ":", 2) name = tokens[0] tag = tokens[1] } if _, found := r.URL.Query()["target"]; found { name = query.Target } var buildArgs = map[string]string{} if _, found := r.URL.Query()["buildargs"]; found { if err := json.Unmarshal([]byte(query.BuildArgs), &buildArgs); err != nil { utils.BadRequest(w, "buildargs", query.BuildArgs, err) return } } // convert label formats var labels = []string{} if _, found := r.URL.Query()["labels"]; found { var m = map[string]string{} if err := json.Unmarshal([]byte(query.Labels), &m); err != nil { utils.BadRequest(w, "labels", query.Labels, err) return } for k, v := range m { labels = append(labels, k+"="+v) } } pullPolicy := buildah.PullIfMissing if _, found := r.URL.Query()["pull"]; found { if query.Pull { pullPolicy = buildah.PullAlways } } // build events will be recorded here var ( buildEvents = []string{} progress = bytes.Buffer{} ) buildOptions := imagebuildah.BuildOptions{ ContextDirectory: filepath.Join(anchorDir, "build"), PullPolicy: pullPolicy, Registry: query.Registry, IgnoreUnrecognizedInstructions: true, Quiet: query.Quiet, Isolation: buildah.IsolationChroot, Runtime: "", RuntimeArgs: nil, TransientMounts: nil, Compression: archive.Gzip, Args: buildArgs, Output: name, AdditionalTags: []string{tag}, Log: func(format string, args ...interface{}) { buildEvents = append(buildEvents, fmt.Sprintf(format, args...)) }, In: nil, Out: &progress, Err: &progress, SignaturePolicyPath: "", ReportWriter: &progress, OutputFormat: buildah.Dockerv2ImageManifest, SystemContext: nil, NamespaceOptions: nil, ConfigureNetwork: 0, CNIPluginPath: "", CNIConfigDir: "", IDMappingOptions: nil, AddCapabilities: nil, DropCapabilities: nil, CommonBuildOpts: &buildah.CommonBuildOptions{ AddHost: nil, CgroupParent: "", CPUPeriod: query.CpuPeriod, CPUQuota: query.CpuQuota, CPUShares: query.CpuShares, CPUSetCPUs: query.CpuSetCpus, CPUSetMems: "", HTTPProxy: false, Memory: query.Memory, DNSSearch: nil, DNSServers: nil, DNSOptions: nil, MemorySwap: query.MemSwap, LabelOpts: nil, SeccompProfilePath: "", ApparmorProfile: "", ShmSize: strconv.Itoa(query.ShmSize), Ulimit: nil, Volumes: nil, }, DefaultMountsFilePath: "", IIDFile: "", Squash: query.Squash, Labels: labels, Annotations: nil, OnBuild: nil, Layers: false, NoCache: query.NoCache, RemoveIntermediateCtrs: query.Rm, ForceRmIntermediateCtrs: query.ForceRm, BlobDirectory: "", Target: query.Target, Devices: nil, } id, _, err := getRuntime(r).Build(r.Context(), buildOptions, query.Dockerfile) if err != nil { utils.InternalServerError(w, err) } // Find image ID that was built... utils.WriteResponse(w, http.StatusOK, struct { Stream string `json:"stream"` }{ Stream: progress.String() + "\n" + strings.Join(buildEvents, "\n") + fmt.Sprintf("\nSuccessfully built %s\n", id), }) } func extractTarFile(r *http.Request, w http.ResponseWriter) (string, error) { // build a home for the request body anchorDir, err := ioutil.TempDir("", "libpod_builder") if err != nil { return "", err } buildDir := filepath.Join(anchorDir, "build") path := filepath.Join(anchorDir, "tarBall") tarBall, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666) if err != nil { return "", err } defer tarBall.Close() // Content-Length not used as too many existing API clients didn't honor it _, err = io.Copy(tarBall, r.Body) r.Body.Close() if err != nil { utils.InternalServerError(w, fmt.Errorf("failed Request: Unable to copy tar file from request body %s", r.RequestURI)) } _, _ = tarBall.Seek(0, 0) if err := archive.Untar(tarBall, buildDir, &archive.TarOptions{}); err != nil { return "", err } return anchorDir, nil }