podman

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package specgen
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import (
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	"errors"
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	"fmt"
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	"github.com/containers/podman/v5/pkg/util"
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)
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var (
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	// ErrInvalidPodSpecConfig describes an error given when the podspecgenerator is invalid
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	ErrInvalidPodSpecConfig = errors.New("invalid pod spec")
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	// containerConfig has the default configurations defined in containers.conf
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	containerConfig = util.DefaultContainerConfig()
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)
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func exclusivePodOptions(opt1, opt2 string) error {
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	return fmt.Errorf("%s and %s are mutually exclusive pod options: %w", opt1, opt2, ErrInvalidPodSpecConfig)
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}
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// Validate verifies the input is valid
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func (p *PodSpecGenerator) Validate() error {
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	// PodBasicConfig
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	if p.NoInfra {
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		if len(p.InfraCommand) > 0 {
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			return exclusivePodOptions("NoInfra", "InfraCommand")
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		}
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		if len(p.InfraImage) > 0 {
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			return exclusivePodOptions("NoInfra", "InfraImage")
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		}
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		if len(p.InfraName) > 0 {
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			return exclusivePodOptions("NoInfra", "InfraName")
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		}
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		if len(p.SharedNamespaces) > 0 {
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			return exclusivePodOptions("NoInfra", "SharedNamespaces")
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		}
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	}
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	// PodNetworkConfig
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	if err := validateNetNS(&p.NetNS); err != nil {
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		return err
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	}
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	if p.NoInfra {
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		if p.NetNS.NSMode != Default && p.NetNS.NSMode != "" {
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			return errors.New("NoInfra and network modes cannot be used together")
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		}
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		// Note that networks might be set when --ip or --mac was set
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		// so we need to check that no networks are set without the infra
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		if len(p.Networks) > 0 {
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			return errors.New("cannot set networks options without infra container")
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		}
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		if len(p.DNSOption) > 0 {
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			return exclusivePodOptions("NoInfra", "DNSOption")
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		}
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		if len(p.DNSSearch) > 0 {
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			return exclusivePodOptions("NoInfo", "DNSSearch")
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		}
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		if len(p.DNSServer) > 0 {
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			return exclusivePodOptions("NoInfra", "DNSServer")
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		}
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		if len(p.HostAdd) > 0 {
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			return exclusivePodOptions("NoInfra", "HostAdd")
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		}
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		if p.NoManageResolvConf {
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			return exclusivePodOptions("NoInfra", "NoManageResolvConf")
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		}
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	}
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	if p.NetNS.NSMode != "" && p.NetNS.NSMode != Bridge && p.NetNS.NSMode != Slirp && p.NetNS.NSMode != Pasta && p.NetNS.NSMode != Default {
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		if len(p.PortMappings) > 0 {
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			return errors.New("PortMappings can only be used with Bridge, slirp4netns, or pasta networking")
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		}
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	}
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	if p.NoManageResolvConf {
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		if len(p.DNSServer) > 0 {
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			return exclusivePodOptions("NoManageResolvConf", "DNSServer")
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		}
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		if len(p.DNSSearch) > 0 {
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			return exclusivePodOptions("NoManageResolvConf", "DNSSearch")
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		}
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		if len(p.DNSOption) > 0 {
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			return exclusivePodOptions("NoManageResolvConf", "DNSOption")
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		}
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	}
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	if p.NoManageHosts && len(p.HostAdd) > 0 {
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		return exclusivePodOptions("NoManageHosts", "HostAdd")
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	}
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	return nil
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}
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