Pick up location from C2PA or Exif
This commit is contained in:
N-Pex
parent
d6c8146096
commit
64b14cef40
2 changed files with 197 additions and 113 deletions
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@ -88,43 +88,18 @@ const updateDetails = () => {
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});
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}
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const exif = props.proof?.integrity?.exif;
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if (exif) {
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const getSimpleValue = (key: string): string | undefined => {
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return exif ? (exif[key] as string)?.replace(/^"(.+(?="$))"$/, "$1") : undefined;
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};
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const toDegrees = (dms: string | undefined, direction: string) => {
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if (!dms || dms.length == 0) return undefined;
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var parts = dms.split(/deg|min|sec/);
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var d = parts[0];
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var m = parts[1];
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var s = parts[2];
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var deg = (Number(d) + Number(m) / 60 + Number(s) / 3600).toFixed(6);
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if (direction == "S" || direction == "W") {
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deg = "-" + deg;
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}
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return deg;
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};
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// Location
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try {
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const lat = toDegrees(getSimpleValue("GPSLatitude"), getSimpleValue("GPSLatitudeRef") ?? "");
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const lon = toDegrees(getSimpleValue("GPSLongitude"), getSimpleValue("GPSLongitudeRef") ?? "");
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if (lat && lon && lat.length > 0 && lon.length > 0) {
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const location = lat + " " + lon;
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const link =
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"https://www.google.com/maps/search/?api=1&query=" + encodeURIComponent(lat) + "," + encodeURIComponent(lon);
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d.push({
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icon: "$vuetify.icons.ic_exif_location",
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title: t("file_mode.cc_location"),
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value: location,
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link: link,
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});
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}
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} catch (error) { }
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if (props.metadata?.location) {
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const lat = props.metadata.location.latitude;
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const lon = props.metadata.location.longitude;
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const location = lat + " " + lon;
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const link = "https://www.google.com/maps/search/?api=1&query=" + encodeURIComponent(lat) + "," + encodeURIComponent(lon);
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d.push({
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icon: "$vuetify.icons.ic_exif_location",
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title: t("file_mode.cc_location"),
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value: location,
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link: link,
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});
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}
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details.value = d;
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};
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@ -62,13 +62,19 @@ export type Proof = {
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ai?: { inferenceResult?: AIInferenceResult };
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};
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export type MediaMetadataGenerator = "unknown" | "camera" | "screenshot" | "ai";
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export type MediaMetadataGenerator = "unknown" | "camera" | "screenshot" | "ai";
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export type MediaMetadataPropertySource = "c2pa" | "exif" | "metadata";
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export type MediaMetadataEdit = {
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editor: string;
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date?: Date;
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}
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};
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export type MediaMetadataLocation = {
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latitude: string;
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longitude: string;
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source: MediaMetadataPropertySource;
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};
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export type MediaInterventionFlags = {
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creationDate?: Date;
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@ -76,7 +82,7 @@ export type MediaInterventionFlags = {
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modified?: boolean;
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containsC2PA?: boolean;
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containsEXIF?: boolean;
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}
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};
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export type MediaMetadata = {
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device?: string;
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@ -87,6 +93,7 @@ export type MediaMetadata = {
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edits?: MediaMetadataEdit[];
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containsC2PA?: boolean;
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containsEXIF?: boolean;
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location?: MediaMetadataLocation;
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};
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type FlagMatchRule = {
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@ -98,7 +105,7 @@ type FlagMatchRule = {
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type FlagMatchRulePathSegment = {
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object: any;
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path: string;
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}
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};
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type FlagMatchRuleValue = {
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path: FlagMatchRulePathSegment[];
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@ -114,51 +121,92 @@ type FlagMatchInfo = {
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type FlagValue = {
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path: string;
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transform?: (value: any, match: FlagMatchRuleValue) => any;
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}
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};
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const pathsC2PASource = (): FlagValue[] => {
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return [
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{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:Make", transform: getExifMakeModelPrefixed },
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{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:Model", transform: getExifMakeModelPrefixed },
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{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/softwareAgent/name"},
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{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/softwareAgent"},
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{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/../../../claim_generator"}
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{
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path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:Make",
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transform: getExifMakeModelPrefixed,
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},
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{
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path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:Model",
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transform: getExifMakeModelPrefixed,
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},
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{
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path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/softwareAgent/name",
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},
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{
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path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/softwareAgent",
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},
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{
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path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/../../../claim_generator",
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},
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];
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};
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const pathsExifSource = (): FlagValue[] => {
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return [
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{path: "integrity/exif/Make", transform: getExifMakeModelNoPrefix },
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{path: "integrity/exif/Model", transform: getExifMakeModelNoPrefix }
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{ path: "integrity/exif/Make", transform: getExifMakeModelNoPrefix },
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{ path: "integrity/exif/Model", transform: getExifMakeModelNoPrefix },
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];
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};
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const pathsC2PACreationDate = (): FlagValue[] => {
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return [
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{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/when"},
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{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/../../metadata/dateTime"},
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{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/../../../signature_info/time"},
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{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:DateTimeOriginal", transform: (value, match) => {
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{
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path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/when",
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},
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{
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path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/../../metadata/dateTime",
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},
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{
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path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/../../../signature_info/time",
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},
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{
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path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:DateTimeOriginal",
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transform: (value, match) => {
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// Check if we have a timestamp offset
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let offset = extractFlagValues("../exif:OffsetTimeOriginal", match.path)?.at(0)?.value;
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return dayjs(Date.parse(value + (offset ? offset : ""))).format("lll");
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}}
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},
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},
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];
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}
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};
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const pathsC2PACamera = (): FlagValue[] => {
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return [
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{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data{exif:SceneType=1|directly photographed image}"},
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{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:LensMake"},
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{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:LensModel"},
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{
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path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data{exif:SceneType=1|directly photographed image}",
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},
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{ path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:LensMake" },
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{ path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:LensModel" },
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];
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};
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const pathsExifCamera = (): FlagValue[] => {
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return [
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{path: "integrity/exif{SceneType=1|directly photographed image}"},
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{path: "integrity/exif/LensMake"},
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{path: "integrity/exif/LensModel"},
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{ path: "integrity/exif{SceneType=1|directly photographed image}" },
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{ path: "integrity/exif/LensMake" },
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{ path: "integrity/exif/LensModel" },
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];
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};
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const pathsC2PALocation = (): FlagValue[] => {
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return [
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{ path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/GPSLatitude" },
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{ path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/GPSLongitude" },
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{ path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/GPSLatitudeRef" },
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{ path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/GPSLongitudeRef" },
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];
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};
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const pathsExifLocation = (): FlagValue[] => {
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return [
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{ path: "integrity/exif/GPSLatitude" },
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{ path: "integrity/exif/GPSLongitude" },
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{ path: "integrity/exif/GPSLatitudeRef" },
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{ path: "integrity/exif/GPSLongitudeRef" },
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];
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};
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@ -166,47 +214,62 @@ const getExifValue = (val: string): string => {
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return val.replace(/^"(.+(?="$))"$/, "$1");
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};
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const toDegrees = (dms: string | undefined, direction: string) => {
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if (!dms || dms.length == 0) return undefined;
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var parts = dms.split(/deg|min|sec/);
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var d = parts[0];
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var m = parts[1];
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var s = parts[2];
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var deg = (Number(d) + Number(m) / 60 + Number(s) / 3600).toFixed(6);
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if (direction == "S" || direction == "W") {
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deg = "-" + deg;
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}
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return deg;
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};
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const pathsExifCreationDate = (): FlagValue[] => {
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return [
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{path: "integrity/exif/DateTimeOriginal", transform: (value, match) => {
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{
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path: "integrity/exif/DateTimeOriginal",
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transform: (value, match) => {
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let dateTimeOriginal = getExifValue(value);
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// Check if we have a timestamp offset
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let offset = extractFlagValues("../OffsetTimeOriginal", match.path)?.at(0)?.value as string;
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return dayjs(Date.parse(dateTimeOriginal + (offset ? getExifValue(offset) : ""))).format("lll");
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}}
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},
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},
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];
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}
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};
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const getExifMakeModelNoPrefix = (ignoredvalue: any, match: FlagMatchRuleValue): string => {
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return getExifMakeModel(match, "");
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}
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};
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const getExifMakeModelPrefixed = (ignoredvalue: any, match: FlagMatchRuleValue): string => {
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return getExifMakeModel(match, "exif:");
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}
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};
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const getExifMakeModel = (match: FlagMatchRuleValue, prefix: string): string => {
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// Make and model
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let makeAndModel = "";
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const make = extractFlagValues(`../${prefix}Make`, match.path)?.at(0)?.value as string;
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const model = extractFlagValues(`../${prefix}Model`, match.path)?.at(0)?.value as string;
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if (make) {
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makeAndModel += getExifValue(make);
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// Make and model
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let makeAndModel = "";
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const make = extractFlagValues(`../${prefix}Make`, match.path)?.at(0)?.value as string;
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const model = extractFlagValues(`../${prefix}Model`, match.path)?.at(0)?.value as string;
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if (make) {
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makeAndModel += getExifValue(make);
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}
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if (model) {
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if (makeAndModel.length > 0) {
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makeAndModel += ", ";
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}
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if (model) {
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if (makeAndModel.length > 0) {
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makeAndModel += ", ";
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}
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makeAndModel += getExifValue(model);
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}
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return makeAndModel;
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}
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makeAndModel += getExifValue(model);
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}
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return makeAndModel;
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};
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const ruleScreenshotMeta = (): FlagMatchRule[] => {
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return [
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{
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field:
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"name",
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field: "name",
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match: ["screenshot"],
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description: "Screen capture",
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},
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@ -260,10 +323,7 @@ const matchFlag = (rules: FlagMatchRule[], path: FlagMatchRulePathSegment[]) =>
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};
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const extractFlagValues = (flagPath: string, path: FlagMatchRulePathSegment[]): FlagMatchRuleValue[] => {
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const getValues = (
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keys: string[],
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path: FlagMatchRulePathSegment[]
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): FlagMatchRuleValue[] | undefined => {
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const getValues = (keys: string[], path: FlagMatchRulePathSegment[]): FlagMatchRuleValue[] | undefined => {
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if (keys.length == 0 || path.length == 0) return undefined;
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const o = path[0].object;
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@ -289,7 +349,13 @@ const extractFlagValues = (flagPath: string, path: FlagMatchRulePathSegment[]):
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}
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let nextObject = o[key];
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let omatches: any[] = nextObject ? (Array.isArray(nextObject) ? nextObject : hasBracket ? Object.values(nextObject) : [nextObject]) : [];
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let omatches: any[] = nextObject
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? Array.isArray(nextObject)
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? nextObject
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: hasBracket
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? Object.values(nextObject)
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: [nextObject]
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: [];
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// Any constraints controlling what array object(s) to consider?
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if (optionalConstraint) {
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@ -321,7 +387,7 @@ const extractFlagValues = (flagPath: string, path: FlagMatchRulePathSegment[]):
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return { value: oin, path: [{ object: oin, path: key + (omatches.length > 1 ? `[${i}]` : "") }, ...path] };
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});
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} else if (omatches.length == 1) {
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return getValues(keys.slice(1), [{object: omatches[0], path: key}, ...path]);
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return getValues(keys.slice(1), [{ object: omatches[0], path: key }, ...path]);
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} else {
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return omatches.reduce((res: FlagMatchRuleValue[] | undefined, oin: any, i: number) => {
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let matches = getValues(keys.slice(1), [{ object: oin, path: key + "[" + i + "]" }, ...path]);
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@ -354,20 +420,19 @@ const getFirstWithData = (flagValues: FlagValue[], path: FlagMatchRulePathSegmen
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for (let idx = 0; idx < flagValues.length; idx++) {
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const result = extractFlagValues(flagValues[idx].path, path);
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if (result.length > 0) {
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first = result[0]
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first = result[0];
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transform = flagValues[idx].transform;
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break;
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}
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}
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if (first && first.value as string) {
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if (first && (first.value as string)) {
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try {
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let val = first.value as string;
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if (val && transform) {
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val = transform(val, first);
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}
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return val;
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} catch (error) {
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}
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} catch (error) {}
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}
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return undefined;
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};
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@ -382,21 +447,33 @@ const getFirstWithDataAsDate = (flagValues: FlagValue[], path: FlagMatchRulePath
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date = utils.parseExifDate(val);
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}
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return date;
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} catch (error) {
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}
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} catch (error) {}
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}
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return undefined;
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};
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const getMultiple = (flagValues: FlagValue[], path: FlagMatchRulePathSegment[]): (string | undefined)[] => {
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let results: (string | undefined)[] = new Array(flagValues.length);
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for (let idx = 0; idx < flagValues.length; idx++) {
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const result = extractFlagValues(flagValues[idx].path, path);
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if (result.length > 0) {
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results[idx] = result[0].value as string;
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} else {
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results[idx] = undefined;
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}
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}
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return results;
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};
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export const mediaMetadataToMediaInterventionFlags = (mediaMetadata: MediaMetadata): MediaInterventionFlags => {
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return {
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creationDate: mediaMetadata.creationDate,
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generator: mediaMetadata.generator,
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modified: mediaMetadata.edits && mediaMetadata.edits.length > 0,
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containsC2PA: mediaMetadata.containsC2PA,
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containsEXIF: mediaMetadata.containsEXIF
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}
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}
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containsEXIF: mediaMetadata.containsEXIF,
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};
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};
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export const extractMediaMetadata = (proof?: Proof): MediaMetadata | undefined => {
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if (!proof) return undefined;
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@ -410,7 +487,7 @@ export const extractMediaMetadata = (proof?: Proof): MediaMetadata | undefined =
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valid = results.failure.length == 0 && results.success.length > 0;
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}
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const rootMatchPath = [{object: proof, path: ""}];
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const rootMatchPath = [{ object: proof, path: "" }];
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let source: string | undefined = undefined;
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let dateCreated: Date | undefined = undefined;
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|
|
@ -431,18 +508,28 @@ export const extractMediaMetadata = (proof?: Proof): MediaMetadata | undefined =
|
|||
}
|
||||
}
|
||||
|
||||
|
||||
let generator: MediaMetadataGenerator = "unknown";
|
||||
let generatorSource: MediaMetadataPropertySource | undefined = undefined;
|
||||
|
||||
let digitalSourceType = extractFlagValues("integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/digitalSourceType", rootMatchPath)?.at(0)?.value as string;
|
||||
let digitalSourceType = extractFlagValues(
|
||||
"integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/digitalSourceType",
|
||||
rootMatchPath
|
||||
)?.at(0)?.value as string;
|
||||
if ([C2PASourceTypeScreenCapture].includes(digitalSourceType)) {
|
||||
generator = "screenshot";
|
||||
generatorSource = "c2pa";
|
||||
} else if ([C2PASourceTypeDigitalCapture, C2PASourceTypeComputationalCapture, C2PASourceTypeCompositeCapture].includes(digitalSourceType)) {
|
||||
} else if (
|
||||
[C2PASourceTypeDigitalCapture, C2PASourceTypeComputationalCapture, C2PASourceTypeCompositeCapture].includes(
|
||||
digitalSourceType
|
||||
)
|
||||
) {
|
||||
generator = "camera";
|
||||
generatorSource = "c2pa";
|
||||
} else if ([C2PASourceTypeTrainedAlgorithmicMedia, C2PASourceTypeCompositeWithTrainedAlgorithmicMedia].includes(digitalSourceType)) {
|
||||
} else if (
|
||||
[C2PASourceTypeTrainedAlgorithmicMedia, C2PASourceTypeCompositeWithTrainedAlgorithmicMedia].includes(
|
||||
digitalSourceType
|
||||
)
|
||||
) {
|
||||
generator = "ai";
|
||||
generatorSource = "c2pa";
|
||||
} else if (getFirstWithData(pathsC2PACamera(), rootMatchPath)) {
|
||||
|
|
@ -468,20 +555,41 @@ export const extractMediaMetadata = (proof?: Proof): MediaMetadata | undefined =
|
|||
if (c2paEdits.length > 0) {
|
||||
edits = c2paEdits.map((edit) => {
|
||||
return {
|
||||
editor: getFirstWithData([
|
||||
{path: "softwareAgent/name"},
|
||||
{path: "softwareAgent"},
|
||||
{path: "../../../claim_generator"}
|
||||
], edit.path) ?? "",
|
||||
date: getFirstWithDataAsDate([
|
||||
{path: "when"},
|
||||
{path: "../../metadata/dateTime"},
|
||||
{path: "../../../signature_info/time"}
|
||||
], edit.path)
|
||||
}
|
||||
editor:
|
||||
getFirstWithData(
|
||||
[{ path: "softwareAgent/name" }, { path: "softwareAgent" }, { path: "../../../claim_generator" }],
|
||||
edit.path
|
||||
) ?? "",
|
||||
date: getFirstWithDataAsDate(
|
||||
[{ path: "when" }, { path: "../../metadata/dateTime" }, { path: "../../../signature_info/time" }],
|
||||
edit.path
|
||||
),
|
||||
};
|
||||
});
|
||||
}
|
||||
|
||||
// Location
|
||||
let location: MediaMetadataLocation | undefined = undefined;
|
||||
let locationSource: MediaMetadataPropertySource = "c2pa"
|
||||
let [lat, lon, latref, lonref] = getMultiple(pathsC2PALocation(), rootMatchPath);
|
||||
if (!lat || !lon) {
|
||||
[lat, lon, latref, lonref] = getMultiple(pathsExifLocation(), rootMatchPath);
|
||||
locationSource = "exif"
|
||||
}
|
||||
if (lat && lon) {
|
||||
try {
|
||||
const latitude = toDegrees(getExifValue(lat), getExifValue(latref ?? ""));
|
||||
const longitude = toDegrees(getExifValue(lon), getExifValue(lonref ?? ""));
|
||||
if (latitude && longitude && latitude.length > 0 && longitude.length > 0) {
|
||||
location = {
|
||||
latitude,
|
||||
longitude,
|
||||
source: "exif",
|
||||
};
|
||||
}
|
||||
} catch (error) {}
|
||||
}
|
||||
|
||||
// Do we have any data? Else, return "undefined", we don't just want to send an object with all defaults.
|
||||
if (source === undefined && dateCreated === undefined && generator === "unknown" && (!edits || edits.length == 0)) {
|
||||
return undefined;
|
||||
|
|
@ -495,7 +603,8 @@ export const extractMediaMetadata = (proof?: Proof): MediaMetadata | undefined =
|
|||
generatorSource: generatorSource,
|
||||
edits: edits,
|
||||
containsC2PA: proof.integrity?.c2pa !== undefined,
|
||||
containsEXIF: proof.integrity?.exif !== undefined
|
||||
containsEXIF: proof.integrity?.exif !== undefined,
|
||||
location: location,
|
||||
};
|
||||
return flags;
|
||||
} catch (error) {}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue