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feat: AudioContext spoofing

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Added the following properties:
- AudioContext:sampleRate
- AudioContext:outputLatency
- AudioContext:maxChannelCount
This commit is contained in:
daijro 2024-10-12 03:21:55 -05:00
parent 3b996534d8
commit df755def7f
2 changed files with 76 additions and 1 deletions
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3
Makefile
View file

@ -174,7 +174,8 @@ run-pw:
run:
cd $(cf_source_dir) \
&& rm -rf ~/.camoufox $(cf_source_dir)/obj-x86_64-pc-linux-gnu/tmp/profile-default \
&& CAMOU_CONFIG='{"debug": true}' ./mach run $(args)
&& CAMOU_CONFIG=$${CAMOU_CONFIG:-'{}'} \
&& CAMOU_CONFIG="$${CAMOU_CONFIG%?}, \"debug\": true}" ./mach run $(args)
edit-cfg:
@if [ ! -f $(cf_source_dir)/obj-x86_64-pc-linux-gnu/dist/bin/camoufox.cfg ]; then \

74
patches/audio-context-spoofing.patch Normal file
View file

@ -0,0 +1,74 @@
diff --git a/dom/media/CubebUtils.cpp b/dom/media/CubebUtils.cpp
index 1b52782a48..7219b68d88 100644
--- a/dom/media/CubebUtils.cpp
+++ b/dom/media/CubebUtils.cpp
@@ -40,6 +40,7 @@
#include <thread>
#include "CallbackThreadRegistry.h"
#include "mozilla/StaticPrefs_media.h"
+#include "MaskConfig.hpp"
#define AUDIOIPC_STACK_SIZE_DEFAULT (64 * 4096)
@@ -399,6 +400,8 @@ uint32_t PreferredSampleRate(bool aShouldResistFingerprinting) {
if (sCubebForcedSampleRate) {
return sCubebForcedSampleRate;
}
+ if (auto value = MaskConfig::GetUint32("AudioContext:sampleRate"))
+ return value.value();
if (aShouldResistFingerprinting) {
return 44100;
}
diff --git a/dom/media/moz.build b/dom/media/moz.build
index 21063575d7..9e7c9f3e84 100644
--- a/dom/media/moz.build
+++ b/dom/media/moz.build
@@ -417,3 +417,5 @@ if CONFIG["CC_TYPE"] in ("clang", "gcc"):
CXXFLAGS += ["-Werror=switch"]
FINAL_LIBRARY = "xul"
+# DOM Mask
+LOCAL_INCLUDES += ["/camoucfg"]
\ No newline at end of file
diff --git a/dom/media/webaudio/AudioContext.cpp b/dom/media/webaudio/AudioContext.cpp
index 66184b683b..daf30882ea 100644
--- a/dom/media/webaudio/AudioContext.cpp
+++ b/dom/media/webaudio/AudioContext.cpp
@@ -45,6 +45,7 @@
#include "mozilla/dom/WaveShaperNodeBinding.h"
#include "mozilla/dom/Worklet.h"
+#include "MaskConfig.hpp"
#include "AudioBuffer.h"
#include "AudioBufferSourceNode.h"
#include "AudioChannelService.h"
@@ -561,6 +562,8 @@ double AudioContext::OutputLatency() {
}
// When reduceFingerprinting is enabled, return a latency figure that is
// fixed, but plausible for the platform.
+ if (auto value = MaskConfig::GetDouble("AudioContext:outputLatency"))
+ return value.value();
double latency_s = 0.0;
if (mShouldResistFingerprinting) {
#ifdef XP_MACOSX
@@ -714,6 +717,8 @@ void AudioContext::UnregisterActiveNode(AudioNode* aNode) {
}
uint32_t AudioContext::MaxChannelCount() const {
+ if (auto value = MaskConfig::GetUint32("AudioContext:maxChannelCount"))
+ return value.value();
if (mShouldResistFingerprinting) {
return 2;
}
diff --git a/dom/media/webaudio/moz.build b/dom/media/webaudio/moz.build
index 3ee8c0aa76..c0f1df8cf6 100644
--- a/dom/media/webaudio/moz.build
+++ b/dom/media/webaudio/moz.build
@@ -149,3 +149,6 @@ include("/ipc/chromium/chromium-config.mozbuild")
FINAL_LIBRARY = "xul"
LOCAL_INCLUDES += [".."]
+
+# DOM Mask
+LOCAL_INCLUDES += ["/camoucfg"]
\ No newline at end of file