Documentation
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Overview ¶
Package imagepolicy is the single source of truth for which image types the upload flow accepts and the maximum upload size.
The accepted MIME/extension set is enforced in three places: the HTTP upload handlers (package web), the desktop file-drop/clipboard bridge (the Wails shell), and the SPA. Keeping the values here means a type/ext policy change is one edit; the frontend mirror in web/app/src/lib/imagePolicy.js is kept in lockstep by a drift test (frontend_drift_test.go).
MaxUploadBytes is authoritative but enforced only server-side (and in the desktop host, which fails fast before bridging). The SPA deliberately does not mirror or pre-check the size cap — the server is the boundary that rejects oversize uploads — so MaxUploadBytes intentionally has no imagePolicy.js counterpart and is not part of the drift check.
Index ¶
Constants ¶
const MaxUploadBytes = 20 << 20 // 20 MiB
MaxUploadBytes is the maximum accepted image size. The server rejects larger uploads; the desktop bridge fails fast before base64-encoding instead of handing the API a payload it will reject.
Variables ¶
var ExtToMIME = map[string]string{
".png": "image/png",
".jpg": "image/jpeg",
".jpeg": "image/jpeg",
".gif": "image/gif",
".webp": "image/webp",
}
ExtToMIME maps each accepted file extension (lowercase, dot-prefixed) to a MIME type. The desktop file-drop path keys off extension because OS drops carry paths, not MIME types. ".jpeg" is an accepted alias for ".jpg".
var MIMEToExt = map[string]string{
"image/png": ".png",
"image/jpeg": ".jpg",
"image/gif": ".gif",
"image/webp": ".webp",
}
MIMEToExt maps every accepted image MIME type to its canonical extension. The upload handler sniffs magic bytes and looks the result up here; an unknown type is rejected.
Functions ¶
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Types ¶
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Source Files