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phantomptrandClaude Opus 5.5
c14782944d
Upload, install, convert and manage PS5 game packages over the network. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
48 lines
2.0 KiB
C
48 lines
2.0 KiB
C
#ifndef PS5UPLOAD2_FOCUS_PROBE_H
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#define PS5UPLOAD2_FOCUS_PROBE_H
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#include <stddef.h>
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/*
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* Read which application currently owns the screen, WITHOUT ptrace.
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*
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* Why this exists: a game brought to the foreground by the "Bring to
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* front" button drops back to the dashboard after a while, and nothing
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* we sample explains it. ShadowMount+ polls two ShellUI event flags
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* (SceShellCoreUtilAppFocus, SceLncUtilSystemStatus) and BOTH stayed
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* silent across a measured window in which the drop demonstrably
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* happened — so those flags are ShellUI's internal bookkeeping, not a
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* faithful record of what is on screen.
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*
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* sceSystemServiceGetAppIdOfBigApp is the direct question instead: it
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* returns the app id of the full-screen ("big") app that currently owns
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* the display, so comparing it against a game's known app id is an
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* unambiguous foreground/background answer.
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*
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* CRITICAL — no ptrace. Every symbol here is resolved with
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* dlsym(RTLD_DEFAULT, ...) and called IN-PROCESS, the same way
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* runtime.c resolves sceLncUtilKillApp. Reading focus must never
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* ptrace-attach SceShellUI: an attach that stops it and does not
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* resume leaves the console UI frozen, recoverable only by holding the
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* power button. That has happened in this codebase before. If you
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* extend this file, keep it dlsym-only.
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*
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* Response shape:
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*
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* {"ok":true,
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* "apis":{"big_app":true,"mini_app":true,"status":false,...},
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* "big_app_id":24600,"mini_app_id":0,
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* "monotonic_ms":123456}
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*
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* Availability is reported per-symbol rather than assumed: these are
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* undeclared in the payload SDK and resolve (or not) per firmware, so
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* the caller can tell "not focused" apart from "cannot tell".
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*
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* Returns 0 on success (buf holds valid JSON, *written_out set), non-zero
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* on internal error with a short ASCII code in *err_out.
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*/
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int focus_probe_get_json(char *buf, size_t cap, size_t *written_out,
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const char **err_out);
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#endif /* PS5UPLOAD2_FOCUS_PROBE_H */
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