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Improved exif info

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N-Pex 2025-10-23 07:45:39 +02:00
parent f33a8c4d4f
commit 5fcbcb77fb
1 changed files with 46 additions and 7 deletions
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53
src/models/proof.ts
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@ -110,14 +110,21 @@ type FlagValue = {
const pathsC2PASource = (): FlagValue[] => {
return [
{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:Make", transform: getExifMakeModel },
{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:Model", transform: getExifMakeModel },
{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:Make", transform: getExifMakeModelPrefixed },
{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:Model", transform: getExifMakeModelPrefixed },
{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/softwareAgent/name"},
{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/softwareAgent"},
{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/../../../claim_generator"}
];
};
const pathsExifSource = (): FlagValue[] => {
return [
{path: "integrity/exif/Make", transform: getExifMakeModelNoPrefix },
{path: "integrity/exif/Model", transform: getExifMakeModelNoPrefix }
];
};
const pathsC2PACreationDate = (): FlagValue[] => {
return [
{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=c2pa.actions|c2pa.actions.v2]/data/actions[action=c2pa.created]/when"},
@ -131,6 +138,20 @@ const pathsC2PACreationDate = (): FlagValue[] => {
];
}
const pathsC2PACamera = (): FlagValue[] => {
return [
{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:LensMake"},
{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data/exif:LensModel"},
];
};
const pathsExifCamera = (): FlagValue[] => {
return [
{path: "integrity/exif/LensMake"},
{path: "integrity/exif/LensModel"},
];
};
const getExifValue = (val: string): string => {
return val.replace(/^"(.+(?="$))"$/, "$1");
};
@ -146,19 +167,27 @@ const pathsExifCreationDate = (): FlagValue[] => {
];
}
const getExifMakeModel = (ignoredvalue: any, match: FlagMatchRuleValue): string => {
const getExifMakeModelNoPrefix = (ignoredvalue: any, match: FlagMatchRuleValue): string => {
return getExifMakeModel(match, "");
}
const getExifMakeModelPrefixed = (ignoredvalue: any, match: FlagMatchRuleValue): string => {
return getExifMakeModel(match, "exif:");
}
const getExifMakeModel = (match: FlagMatchRuleValue, prefix: string): string => {
// Make and model
let makeAndModel = "";
const make = extractFlagValues("../exif:Make", match.path)?.at(0)?.value as string;
const model = extractFlagValues("../exif:Model", match.path)?.at(0)?.value as string;
const make = extractFlagValues(`../${prefix}Make`, match.path)?.at(0)?.value as string;
const model = extractFlagValues(`../${prefix}Model`, match.path)?.at(0)?.value as string;
if (make) {
makeAndModel += make;
makeAndModel += getExifValue(make);
}
if (model) {
if (makeAndModel.length > 0) {
makeAndModel += ", ";
}
makeAndModel += model;
makeAndModel += getExifValue(model);
}
return makeAndModel;
}
@ -361,6 +390,10 @@ export const extractProofHintFlags = (proof?: Proof): ProofHintFlags | undefined
let dateCreatedSource: ProofHintFlagSource | undefined = undefined;
source = getFirstWithData(pathsC2PASource(), rootMatchPath);
if (!source) {
source = getFirstWithData(pathsExifSource(), rootMatchPath);
}
dateCreated = getFirstWithDataAsDate(pathsC2PACreationDate(), rootMatchPath);
if (dateCreated) {
dateCreatedSource = "c2pa";
@ -385,6 +418,12 @@ export const extractProofHintFlags = (proof?: Proof): ProofHintFlags | undefined
} else if ([C2PASourceTypeTrainedAlgorithmicMedia, C2PASourceTypeCompositeWithTrainedAlgorithmicMedia].includes(digitalSourceType)) {
generator = "ai";
generatorSource = "c2pa";
} else if (getFirstWithData(pathsC2PACamera(), rootMatchPath)) {
generator = "camera";
generatorSource = "c2pa";
} else if (getFirstWithData(pathsExifCamera(), rootMatchPath)) {
generator = "camera";
generatorSource = "exif";
} else if (matchFlag(ruleScreenshotMeta(), rootMatchPath).result) {
generator = "screenshot";
generatorSource = "metadata";