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-rw-r--r--cmd/podman/parse/net.go188
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
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+++ 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
+}