273 lines
8.2 KiB
Go
273 lines
8.2 KiB
Go
package conf
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import (
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"encoding/json"
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"fmt"
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"net/url"
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"regexp"
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"strings"
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"time"
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"github.com/aler9/gortsplib/pkg/base"
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)
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var rePathName = regexp.MustCompile(`^[0-9a-zA-Z_\-/\.~]+$`)
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// IsValidPathName checks if a path name is valid.
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func IsValidPathName(name string) error {
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if name == "" {
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return fmt.Errorf("cannot be empty")
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}
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if name[0] == '/' {
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return fmt.Errorf("can't begin with a slash")
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}
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if name[len(name)-1] == '/' {
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return fmt.Errorf("can't end with a slash")
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}
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if !rePathName.MatchString(name) {
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return fmt.Errorf("can contain only alphanumeric characters, underscore, dot, tilde, minus or slash")
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}
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return nil
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}
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// PathConf is a path configuration.
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type PathConf struct {
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Regexp *regexp.Regexp `json:"-"`
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// source
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Source string `json:"source"`
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SourceProtocol SourceProtocol `json:"sourceProtocol"`
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SourceAnyPortEnable bool `json:"sourceAnyPortEnable"`
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SourceFingerprint string `json:"sourceFingerprint"`
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SourceOnDemand bool `json:"sourceOnDemand"`
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SourceOnDemandStartTimeout StringDuration `json:"sourceOnDemandStartTimeout"`
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SourceOnDemandCloseAfter StringDuration `json:"sourceOnDemandCloseAfter"`
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SourceRedirect string `json:"sourceRedirect"`
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DisablePublisherOverride bool `json:"disablePublisherOverride"`
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Fallback string `json:"fallback"`
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// authentication
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PublishUser Credential `json:"publishUser"`
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PublishPass Credential `json:"publishPass"`
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PublishIPs IPsOrNets `json:"publishIPs"`
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ReadUser Credential `json:"readUser"`
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ReadPass Credential `json:"readPass"`
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ReadIPs IPsOrNets `json:"readIPs"`
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// external commands
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RunOnInit string `json:"runOnInit"`
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RunOnInitRestart bool `json:"runOnInitRestart"`
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RunOnDemand string `json:"runOnDemand"`
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RunOnDemandRestart bool `json:"runOnDemandRestart"`
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RunOnDemandStartTimeout StringDuration `json:"runOnDemandStartTimeout"`
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RunOnDemandCloseAfter StringDuration `json:"runOnDemandCloseAfter"`
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RunOnReady string `json:"runOnReady"`
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RunOnReadyRestart bool `json:"runOnReadyRestart"`
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RunOnRead string `json:"runOnRead"`
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RunOnReadRestart bool `json:"runOnReadRestart"`
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// deprecated, replaced by runOnReady. TODO: remove in next version
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RunOnPublish string `json:"runOnPublish"`
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RunOnPublishRestart bool `json:"runOnPublishRestart"`
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}
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func (pconf *PathConf) checkAndFillMissing(conf *Conf, name string) error {
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if name == "" {
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return fmt.Errorf("path name can not be empty")
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}
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// normal path
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if name[0] != '~' {
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err := IsValidPathName(name)
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if err != nil {
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return fmt.Errorf("invalid path name: %s (%s)", err, name)
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}
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// regular expression path
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} else {
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pathRegexp, err := regexp.Compile(name[1:])
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if err != nil {
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return fmt.Errorf("invalid regular expression: %s", name[1:])
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}
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pconf.Regexp = pathRegexp
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}
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if pconf.Source == "" {
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pconf.Source = "publisher"
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}
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switch {
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case pconf.Source == "publisher":
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case strings.HasPrefix(pconf.Source, "rtsp://") ||
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strings.HasPrefix(pconf.Source, "rtsps://"):
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if pconf.Regexp != nil {
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return fmt.Errorf("a path with a regular expression (or path 'all') cannot have a RTSP source; use another path")
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}
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_, err := base.ParseURL(pconf.Source)
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if err != nil {
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return fmt.Errorf("'%s' is not a valid RTSP URL", pconf.Source)
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}
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case strings.HasPrefix(pconf.Source, "rtmp://"):
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if pconf.Regexp != nil {
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return fmt.Errorf("a path with a regular expression (or path 'all') cannot have a RTMP source; use another path")
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}
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u, err := url.Parse(pconf.Source)
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if err != nil {
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return fmt.Errorf("'%s' is not a valid RTMP URL", pconf.Source)
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}
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if u.Scheme != "rtmp" {
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return fmt.Errorf("'%s' is not a valid RTMP URL", pconf.Source)
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}
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if u.User != nil {
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pass, _ := u.User.Password()
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user := u.User.Username()
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if user != "" && pass == "" ||
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user == "" && pass != "" {
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return fmt.Errorf("username and password must be both provided")
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}
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}
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case strings.HasPrefix(pconf.Source, "http://") ||
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strings.HasPrefix(pconf.Source, "https://"):
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if pconf.Regexp != nil {
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return fmt.Errorf("a path with a regular expression (or path 'all') cannot have a HLS source; use another path")
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}
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u, err := url.Parse(pconf.Source)
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if err != nil {
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return fmt.Errorf("'%s' is not a valid HLS URL", pconf.Source)
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}
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if u.Scheme != "http" && u.Scheme != "https" {
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return fmt.Errorf("'%s' is not a valid HLS URL", pconf.Source)
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}
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if u.User != nil {
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pass, _ := u.User.Password()
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user := u.User.Username()
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if user != "" && pass == "" ||
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user == "" && pass != "" {
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return fmt.Errorf("username and password must be both provided")
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}
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}
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case pconf.Source == "redirect":
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if pconf.SourceRedirect == "" {
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return fmt.Errorf("source redirect must be filled")
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}
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_, err := base.ParseURL(pconf.SourceRedirect)
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if err != nil {
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return fmt.Errorf("'%s' is not a valid RTSP URL", pconf.SourceRedirect)
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}
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default:
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return fmt.Errorf("invalid source: '%s'", pconf.Source)
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}
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if pconf.SourceOnDemand {
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if pconf.Source == "publisher" {
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return fmt.Errorf("'sourceOnDemand' is useless when source is 'publisher'")
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}
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}
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if pconf.SourceOnDemandStartTimeout == 0 {
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pconf.SourceOnDemandStartTimeout = 10 * StringDuration(time.Second)
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}
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if pconf.SourceOnDemandCloseAfter == 0 {
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pconf.SourceOnDemandCloseAfter = 10 * StringDuration(time.Second)
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}
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if pconf.Fallback != "" {
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if strings.HasPrefix(pconf.Fallback, "/") {
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err := IsValidPathName(pconf.Fallback[1:])
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if err != nil {
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return fmt.Errorf("'%s': %s", pconf.Fallback, err)
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}
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} else {
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_, err := base.ParseURL(pconf.Fallback)
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if err != nil {
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return fmt.Errorf("'%s' is not a valid RTSP URL", pconf.Fallback)
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}
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}
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}
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if (pconf.PublishUser != "" && pconf.PublishPass == "") ||
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(pconf.PublishUser == "" && pconf.PublishPass != "") {
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return fmt.Errorf("read username and password must be both filled")
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}
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if pconf.PublishUser != "" && pconf.Source != "publisher" {
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return fmt.Errorf("'publishUser' is useless when source is not 'publisher', since " +
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"the stream is not provided by a publisher, but by a fixed source")
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}
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if pconf.PublishUser != "" && conf.ExternalAuthenticationURL != "" {
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return fmt.Errorf("'publishUser' can't be used with 'externalAuthenticationURL'")
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}
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if len(pconf.PublishIPs) > 0 && pconf.Source != "publisher" {
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return fmt.Errorf("'publishIPs' is useless when source is not 'publisher', since " +
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"the stream is not provided by a publisher, but by a fixed source")
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}
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if len(pconf.PublishIPs) > 0 && conf.ExternalAuthenticationURL != "" {
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return fmt.Errorf("'publishIPs' can't be used with 'externalAuthenticationURL'")
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}
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if (pconf.ReadUser != "" && pconf.ReadPass == "") ||
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(pconf.ReadUser == "" && pconf.ReadPass != "") {
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return fmt.Errorf("read username and password must be both filled")
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}
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if pconf.ReadUser != "" && conf.ExternalAuthenticationURL != "" {
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return fmt.Errorf("'readUser' can't be used with 'externalAuthenticationURL'")
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}
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if len(pconf.ReadIPs) > 0 && conf.ExternalAuthenticationURL != "" {
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return fmt.Errorf("'readIPs' can't be used with 'externalAuthenticationURL'")
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}
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if pconf.RunOnInit != "" && pconf.Regexp != nil {
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return fmt.Errorf("a path with a regular expression does not support option 'runOnInit'; use another path")
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}
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if pconf.RunOnDemand != "" && pconf.Source != "publisher" {
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return fmt.Errorf("'runOnDemand' can be used only when source is 'publisher'")
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}
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if pconf.RunOnPublish != "" {
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pconf.RunOnReady = pconf.RunOnPublish
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}
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if pconf.RunOnPublishRestart {
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pconf.RunOnReadyRestart = true
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}
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if pconf.RunOnDemandStartTimeout == 0 {
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pconf.RunOnDemandStartTimeout = 10 * StringDuration(time.Second)
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}
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if pconf.RunOnDemandCloseAfter == 0 {
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pconf.RunOnDemandCloseAfter = 10 * StringDuration(time.Second)
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}
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return nil
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}
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// Equal checks whether two PathConfs are equal.
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func (pconf *PathConf) Equal(other *PathConf) bool {
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a, _ := json.Marshal(pconf)
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b, _ := json.Marshal(other)
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return string(a) == string(b)
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}
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