Merge pull request #5852 from baude/v1prune

Podman V2 birth

1 files changed, 188 insertions, 0 deletions

diff --git a/cmd/podman/parse/net.go b/cmd/podman/parse/net.go
new file mode 100644
index 000000000..03cda268c
--- /dev/null
+++ b/cmd/podman/parse/net.go
@@ -0,0 +1,188 @@
+//nolint
+// most of these validate and parse functions have been taken from projectatomic/docker
+// and modified for cri-o
+package parse
+
+import (
+	"bufio"
+	"fmt"
+	"net"
+	"net/url"
+	"os"
+	"regexp"
+	"strings"
+
+	"github.com/pkg/errors"
+)
+
+const (
+	Protocol_TCP Protocol = 0
+	Protocol_UDP Protocol = 1
+)
+
+type Protocol int32
+
+// PortMapping specifies the port mapping configurations of a sandbox.
+type PortMapping struct {
+	// Protocol of the port mapping.
+	Protocol Protocol `protobuf:"varint,1,opt,name=protocol,proto3,enum=runtime.Protocol" json:"protocol,omitempty"`
+	// Port number within the container. Default: 0 (not specified).
+	ContainerPort int32 `protobuf:"varint,2,opt,name=container_port,json=containerPort,proto3" json:"container_port,omitempty"`
+	// Port number on the host. Default: 0 (not specified).
+	HostPort int32 `protobuf:"varint,3,opt,name=host_port,json=hostPort,proto3" json:"host_port,omitempty"`
+	// Host IP.
+	HostIp string `protobuf:"bytes,4,opt,name=host_ip,json=hostIp,proto3" json:"host_ip,omitempty"`
+}
+
+// Note: for flags that are in the form <number><unit>, use the RAMInBytes function
+// from the units package in docker/go-units/size.go
+
+var (
+	whiteSpaces  = " \t"
+	alphaRegexp  = regexp.MustCompile(`[a-zA-Z]`)
+	domainRegexp = regexp.MustCompile(`^(:?(:?[a-zA-Z0-9]|(:?[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9]))(:?\.(:?[a-zA-Z0-9]|(:?[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])))*)\.?\s*$`)
+)
+
+// validateExtraHost validates that the specified string is a valid extrahost and returns it.
+// ExtraHost is in the form of name:ip where the ip has to be a valid ip (ipv4 or ipv6).
+// for add-host flag
+func ValidateExtraHost(val string) (string, error) { //nolint
+	// allow for IPv6 addresses in extra hosts by only splitting on first ":"
+	arr := strings.SplitN(val, ":", 2)
+	if len(arr) != 2 || len(arr[0]) == 0 {
+		return "", fmt.Errorf("bad format for add-host: %q", val)
+	}
+	if _, err := validateIPAddress(arr[1]); err != nil {
+		return "", fmt.Errorf("invalid IP address in add-host: %q", arr[1])
+	}
+	return val, nil
+}
+
+// validateIPAddress validates an Ip address.
+// for dns, ip, and ip6 flags also
+func validateIPAddress(val string) (string, error) {
+	var ip = net.ParseIP(strings.TrimSpace(val))
+	if ip != nil {
+		return ip.String(), nil
+	}
+	return "", fmt.Errorf("%s is not an ip address", val)
+}
+
+func ValidateDomain(val string) (string, error) {
+	if alphaRegexp.FindString(val) == "" {
+		return "", fmt.Errorf("%s is not a valid domain", val)
+	}
+	ns := domainRegexp.FindSubmatch([]byte(val))
+	if len(ns) > 0 && len(ns[1]) < 255 {
+		return string(ns[1]), nil
+	}
+	return "", fmt.Errorf("%s is not a valid domain", val)
+}
+
+// GetAllLabels retrieves all labels given a potential label file and a number
+// of labels provided from the command line.
+func GetAllLabels(labelFile, inputLabels []string) (map[string]string, error) {
+	labels := make(map[string]string)
+	for _, file := range labelFile {
+		// Use of parseEnvFile still seems safe, as it's missing the
+		// extra parsing logic of parseEnv.
+		// There's an argument that we SHOULD be doing that parsing for
+		// all environment variables, even those sourced from files, but
+		// that would require a substantial rework.
+		if err := parseEnvFile(labels, file); err != nil {
+			// FIXME: parseEnvFile is using parseEnv, so we need to add extra
+			// logic for labels.
+			return nil, err
+		}
+	}
+	for _, label := range inputLabels {
+		split := strings.SplitN(label, "=", 2)
+		if split[0] == "" {
+			return nil, errors.Errorf("invalid label format: %q", label)
+		}
+		value := ""
+		if len(split) > 1 {
+			value = split[1]
+		}
+		labels[split[0]] = value
+	}
+	return labels, nil
+}
+
+func parseEnv(env map[string]string, line string) error {
+	data := strings.SplitN(line, "=", 2)
+
+	// catch invalid variables such as "=" or "=A"
+	if data[0] == "" {
+		return errors.Errorf("invalid environment variable: %q", line)
+	}
+
+	// trim the front of a variable, but nothing else
+	name := strings.TrimLeft(data[0], whiteSpaces)
+	if strings.ContainsAny(name, whiteSpaces) {
+		return errors.Errorf("name %q has white spaces, poorly formatted name", name)
+	}
+
+	if len(data) > 1 {
+		env[name] = data[1]
+	} else {
+		if strings.HasSuffix(name, "*") {
+			name = strings.TrimSuffix(name, "*")
+			for _, e := range os.Environ() {
+				part := strings.SplitN(e, "=", 2)
+				if len(part) < 2 {
+					continue
+				}
+				if strings.HasPrefix(part[0], name) {
+					env[part[0]] = part[1]
+				}
+			}
+		} else {
+			// if only a pass-through variable is given, clean it up.
+			if val, ok := os.LookupEnv(name); ok {
+				env[name] = val
+			}
+		}
+	}
+	return nil
+}
+
+// parseEnvFile reads a file with environment variables enumerated by lines
+func parseEnvFile(env map[string]string, filename string) error {
+	fh, err := os.Open(filename)
+	if err != nil {
+		return err
+	}
+	defer fh.Close()
+
+	scanner := bufio.NewScanner(fh)
+	for scanner.Scan() {
+		// trim the line from all leading whitespace first
+		line := strings.TrimLeft(scanner.Text(), whiteSpaces)
+		// line is not empty, and not starting with '#'
+		if len(line) > 0 && !strings.HasPrefix(line, "#") {
+			if err := parseEnv(env, line); err != nil {
+				return err
+			}
+		}
+	}
+	return scanner.Err()
+}
+
+// ValidateFileName returns an error if filename contains ":"
+// as it is currently not supported
+func ValidateFileName(filename string) error {
+	if strings.Contains(filename, ":") {
+		return errors.Errorf("invalid filename (should not contain ':') %q", filename)
+	}
+	return nil
+}
+
+// ValidURL checks a string urlStr is a url or not
+func ValidURL(urlStr string) error {
+	_, err := url.ParseRequestURI(urlStr)
+	if err != nil {
+		return errors.Wrapf(err, "invalid url path: %q", urlStr)
+	}
+	return nil
+}