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Pick up Exif "SceneType" for camera detection

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This commit is contained in:
N-Pex 2025-11-03 09:17:09 +01:00
parent c66602deb7
commit d26f72baec
1 changed files with 59 additions and 50 deletions
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61
src/models/proof.ts
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@ -148,6 +148,7 @@ const pathsC2PACreationDate = (): FlagValue[] => {
const pathsC2PACamera = (): FlagValue[] => {
return [
{path: "integrity/c2pa/manifest_info/manifests[]/assertions[label=stds.exif]/data{exif:SceneType=1|directly photographed image}"},
{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"},
];
@ -155,6 +156,7 @@ const pathsC2PACamera = (): FlagValue[] => {
const pathsExifCamera = (): FlagValue[] => {
return [
{path: "integrity/exif{SceneType=1|directly photographed image}"},
{path: "integrity/exif/LensMake"},
{path: "integrity/exif/LensModel"},
];
@ -267,44 +269,62 @@ const extractFlagValues = (flagPath: string, path: FlagMatchRulePathSegment[]):
const o = path[0].object;
let key = keys[0];
const lastBracket = key.lastIndexOf("[");
if (key === "..") {
return getValues(keys.slice(1), path.slice(1));
}
if (key.endsWith("]") && lastBracket > 0) {
const optionalConstraint = key.substring(lastBracket + 1, key.length - 1);
const lastBracket = key.lastIndexOf("[");
const hasBracket = key.endsWith("]") && lastBracket > 0;
const lastBrace = key.lastIndexOf("{");
const hasBrace = key.endsWith("}") && lastBrace > 0;
let optionalConstraint: String | undefined = undefined;
if (hasBracket) {
optionalConstraint = key.substring(lastBracket + 1, key.length - 1);
key = key.substring(0, lastBracket);
if (o[key] != undefined) {
let opart: any[] = o[key];
if (!Array.isArray(opart)) {
opart = Object.values(opart) ?? [];
} else if (hasBrace) {
optionalConstraint = key.substring(lastBrace + 1, key.length - 1);
key = key.substring(0, lastBrace);
}
let nextObject = o[key];
let omatches: any[] = nextObject ? (Array.isArray(nextObject) ? nextObject : hasBracket ? Object.values(nextObject) : [nextObject]) : [];
// Any constraints controlling what array object(s) to consider?
if (optionalConstraint) {
if (optionalConstraint.startsWith("!!")) {
// Ignore this path in the tree if ANY of the values contain the constraint match.
const [prop, val] = optionalConstraint.substring(2).split("=");
if (opart.some((item) => item[prop] === val)) {
return undefined;
let valarray = val.split("|");
if (omatches.some((item) => valarray.includes(item[prop]))) {
omatches = [];
}
} else if (optionalConstraint.startsWith("!")) {
const [prop, val] = optionalConstraint.substring(1).split("=");
opart = opart.filter((item) => item[prop] !== val);
let valarray = val.split("|");
omatches = omatches.filter((m) => {
return valarray.includes(m[prop]);
});
} else {
const [prop, val] = optionalConstraint.split("=");
let valarray = val.split("|");
opart = opart.filter((item) => valarray.includes(item[prop]));
omatches = omatches.filter((m) => {
return valarray.includes(m[prop]);
});
}
}
if (omatches.length > 0) {
if (keys.length == 1) {
return opart.map((s, i) => {
return { value: o, path: [{ object: s, path: key + "[" + i + "]"}, ... path] };
return omatches.map((oin, i) => {
return { value: oin, path: [{ object: oin, path: key + (omatches.length > 1 ? `[${i}]` : "") }, ...path] };
});
} else if (omatches.length == 1) {
return getValues(keys.slice(1), [{object: omatches[0], path: key}, ...path]);
} else {
return opart.reduce((res: FlagMatchRuleValue[] | undefined, oin: any, i: number) => {
let matches = getValues(keys.slice(1), [ { object: oin, path: key + "[" + i + "]"}, ... path]);
return omatches.reduce((res: FlagMatchRuleValue[] | undefined, oin: any, i: number) => {
let matches = getValues(keys.slice(1), [{ object: oin, path: key + "[" + i + "]" }, ...path]);
if (matches) {
const r2 = res || [];
r2.push(...matches);
@ -316,17 +336,6 @@ const extractFlagValues = (flagPath: string, path: FlagMatchRulePathSegment[]):
} else {
return undefined;
}
} else {
if (o[key] != undefined) {
if (keys.length == 1) {
return [{ value: o[key], path: [{object: o[key], path: key}, ...path] }];
} else {
return getValues(keys.slice(1), [{object: o[key], path: key}, ...path]);
}
} else {
return undefined;
}
}
};
let result: FlagMatchRuleValue[] = [];