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-rw-r--r--dom/wifi/WifiUtils.cpp521
1 files changed, 0 insertions, 521 deletions
diff --git a/dom/wifi/WifiUtils.cpp b/dom/wifi/WifiUtils.cpp
deleted file mode 100644
index 2526c9ea4..000000000
--- a/dom/wifi/WifiUtils.cpp
+++ /dev/null
@@ -1,521 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=8 sts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "WifiUtils.h"
-#include <dlfcn.h>
-#include <errno.h>
-#include <cutils/properties.h>
-#include "prinit.h"
-#include "mozilla/Sprintf.h"
-#include "js/CharacterEncoding.h"
-
-using namespace mozilla::dom;
-
-#define BUFFER_SIZE 4096
-#define COMMAND_SIZE 256
-
-// Intentionally not trying to dlclose() this handle. That's playing
-// Russian roulette with security bugs.
-static void* sWifiLib;
-static PRCallOnceType sInitWifiLib;
-
-static PRStatus
-InitWifiLib()
-{
- sWifiLib = dlopen("/system/lib/libhardware_legacy.so", RTLD_LAZY);
- // We might fail to open the hardware lib. That's OK.
- return PR_SUCCESS;
-}
-
-static void*
-GetSharedLibrary()
-{
- PR_CallOnce(&sInitWifiLib, InitWifiLib);
- return sWifiLib;
-}
-
-static bool
-GetWifiP2pSupported()
-{
- char propP2pSupported[PROPERTY_VALUE_MAX];
- property_get("ro.moz.wifi.p2p_supported", propP2pSupported, "0");
- return (0 == strcmp(propP2pSupported, "1"));
-}
-
-static int
-hex2num(char c)
-{
- if (c >= '0' && c <= '9')
- return c - '0';
- if (c >= 'a' && c <= 'f')
- return c - 'a' + 10;
- if (c >= 'A' && c <= 'F')
- return c - 'A' + 10;
- return -1;
-}
-
-static int
-hex2byte(const char* hex)
-{
- int a, b;
- a = hex2num(*hex++);
- if (a < 0)
- return -1;
- b = hex2num(*hex++);
- if (b < 0)
- return -1;
- return (a << 4) | b;
-}
-
-// This function is equivalent to printf_decode() at src/utils/common.c in
-// the supplicant.
-
-static uint32_t
-convertToBytes(char* buf, uint32_t maxlen, const char* str)
-{
- const char *pos = str;
- uint32_t len = 0;
- int val;
-
- while (*pos) {
- if (len == maxlen)
- break;
- switch (*pos) {
- case '\\':
- pos++;
- switch (*pos) {
- case '\\':
- buf[len++] = '\\';
- pos++;
- break;
- case '"':
- buf[len++] = '"';
- pos++;
- break;
- case 'n':
- buf[len++] = '\n';
- pos++;
- break;
- case 'r':
- buf[len++] = '\r';
- pos++;
- break;
- case 't':
- buf[len++] = '\t';
- pos++;
- break;
- case 'e':
- buf[len++] = '\e';
- pos++;
- break;
- case 'x':
- pos++;
- val = hex2byte(pos);
- if (val < 0) {
- val = hex2num(*pos);
- if (val < 0)
- break;
- buf[len++] = val;
- pos++;
- } else {
- buf[len++] = val;
- pos += 2;
- }
- break;
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- val = *pos++ - '0';
- if (*pos >= '0' && *pos <= '7')
- val = val * 8 + (*pos++ - '0');
- if (*pos >= '0' && *pos <= '7')
- val = val * 8 + (*pos++ - '0');
- buf[len++] = val;
- break;
- default:
- break;
- }
- break;
- default:
- buf[len++] = *pos++;
- break;
- }
- }
- return len;
-}
-
-// This is the same algorithm as in InflateUTF8StringToBuffer with Copy and
-// while ignoring invalids.
-// https://mxr.mozilla.org/mozilla-central/source/js/src/vm/CharacterEncoding.cpp#231
-
-static const uint32_t REPLACE_UTF8 = 0xFFFD;
-
-static void
-LossyConvertUTF8toUTF16(const char* aInput, uint32_t aLength, nsAString& aOut)
-{
- JS::UTF8Chars src(aInput, aLength);
-
- char16_t dst[aLength]; // Allocating for worst case.
-
- // Count how many char16_t characters are needed in the inflated string.
- // |i| is the index into |src|, and |j| is the the index into |dst|.
- size_t srclen = src.length();
- uint32_t j = 0;
- for (uint32_t i = 0; i < srclen; i++, j++) {
- uint32_t v = uint32_t(src[i]);
- if (v == uint32_t('\0') && i < srclen - 1) {
- // If the leading byte is '\0' and it's not the last byte,
- // just ignore it to prevent from being truncated. This could
- // be caused by |convertToBytes| (e.g. \x00 would be converted to '\0')
- j--;
- continue;
- }
- if (!(v & 0x80)) {
- // ASCII code unit. Simple copy.
- dst[j] = char16_t(v);
- } else {
- // Non-ASCII code unit. Determine its length in bytes (n).
- uint32_t n = 1;
- while (v & (0x80 >> n))
- n++;
-
- #define INVALID(report, arg, n2) \
- do { \
- n = n2; \
- goto invalidMultiByteCodeUnit; \
- } while (0)
-
- // Check the leading byte.
- if (n < 2 || n > 4)
- INVALID(ReportInvalidCharacter, i, 1);
-
- // Check that |src| is large enough to hold an n-byte code unit.
- if (i + n > srclen)
- INVALID(ReportBufferTooSmall, /* dummy = */ 0, 1);
-
- // Check the second byte. From Unicode Standard v6.2, Table 3-7
- // Well-Formed UTF-8 Byte Sequences.
- if ((v == 0xE0 && ((uint8_t)src[i + 1] & 0xE0) != 0xA0) || // E0 A0~BF
- (v == 0xED && ((uint8_t)src[i + 1] & 0xE0) != 0x80) || // ED 80~9F
- (v == 0xF0 && ((uint8_t)src[i + 1] & 0xF0) == 0x80) || // F0 90~BF
- (v == 0xF4 && ((uint8_t)src[i + 1] & 0xF0) != 0x80)) // F4 80~8F
- {
- INVALID(ReportInvalidCharacter, i, 1);
- }
-
- // Check the continuation bytes.
- for (uint32_t m = 1; m < n; m++)
- if ((src[i + m] & 0xC0) != 0x80)
- INVALID(ReportInvalidCharacter, i, m);
-
- // Determine the code unit's length in char16_t units and act accordingly.
- v = JS::Utf8ToOneUcs4Char((uint8_t *)&src[i], n);
- if (v < 0x10000) {
- // The n-byte UTF8 code unit will fit in a single char16_t.
- dst[j] = char16_t(v);
- } else {
- v -= 0x10000;
- if (v <= 0xFFFFF) {
- // The n-byte UTF8 code unit will fit in two char16_t units.
- dst[j] = char16_t((v >> 10) + 0xD800);
- j++;
- dst[j] = char16_t((v & 0x3FF) + 0xDC00);
- } else {
- // The n-byte UTF8 code unit won't fit in two char16_t units.
- INVALID(ReportTooBigCharacter, v, 1);
- }
- }
-
- invalidMultiByteCodeUnit:
- // Move i to the last byte of the multi-byte code unit; the loop
- // header will do the final i++ to move to the start of the next
- // code unit.
- i += n - 1;
- }
- }
-
- dst[j] = 0;
- aOut = dst;
-}
-
-// Helper to check we have loaded the hardware shared library.
-#define CHECK_HWLIB(ret) \
- void* hwLib = GetSharedLibrary(); \
- if (!hwLib) { \
- NS_WARNING("No /system/lib/libhardware_legacy.so"); \
- return ret; \
- }
-
-#define DEFAULT_IMPL(name, ret, args...) \
- DEFINE_DLFUNC(name, ret, args...) \
- ret do_##name(args) { \
- USE_DLFUNC(name) \
- return name(args); \
- }
-
-// ICS implementation.
-class ICSWpaSupplicantImpl : public WpaSupplicantImpl
-{
-public:
- DEFAULT_IMPL(wifi_load_driver, int32_t, )
- DEFAULT_IMPL(wifi_unload_driver, int32_t, )
-
- DEFINE_DLFUNC(wifi_wait_for_event, int32_t, char*, size_t)
- int32_t do_wifi_wait_for_event(const char *iface, char *buf, size_t len) {
- USE_DLFUNC(wifi_wait_for_event)
- return wifi_wait_for_event(buf, len);
- }
-
- DEFINE_DLFUNC(wifi_command, int32_t, const char*, char*, size_t*)
- int32_t do_wifi_command(const char* iface, const char* cmd, char* buf, size_t* len) {
- USE_DLFUNC(wifi_command)
- return wifi_command(cmd, buf, len);
- }
-
- DEFINE_DLFUNC(wifi_start_supplicant, int32_t, )
- int32_t do_wifi_start_supplicant(int32_t) {
- USE_DLFUNC(wifi_start_supplicant)
- return wifi_start_supplicant();
- }
-
- DEFINE_DLFUNC(wifi_stop_supplicant, int32_t)
- int32_t do_wifi_stop_supplicant(int32_t) {
- USE_DLFUNC(wifi_stop_supplicant)
- return wifi_stop_supplicant();
- }
-
- DEFINE_DLFUNC(wifi_connect_to_supplicant, int32_t, )
- int32_t do_wifi_connect_to_supplicant(const char* iface) {
- USE_DLFUNC(wifi_connect_to_supplicant)
- return wifi_connect_to_supplicant();
- }
-
- DEFINE_DLFUNC(wifi_close_supplicant_connection, void, )
- void do_wifi_close_supplicant_connection(const char* iface) {
- USE_DLFUNC(wifi_close_supplicant_connection)
- return wifi_close_supplicant_connection();
- }
-};
-
-// JB implementation.
-// We only redefine the methods that have a different signature than on ICS.
-class JBWpaSupplicantImpl : public ICSWpaSupplicantImpl
-{
-public:
- DEFINE_DLFUNC(wifi_wait_for_event, int32_t, const char*, char*, size_t)
- int32_t do_wifi_wait_for_event(const char* iface, char* buf, size_t len) {
- USE_DLFUNC(wifi_wait_for_event)
- return wifi_wait_for_event(iface, buf, len);
- }
-
- DEFINE_DLFUNC(wifi_command, int32_t, const char*, const char*, char*, size_t*)
- int32_t do_wifi_command(const char* iface, const char* cmd, char* buf, size_t* len) {
- USE_DLFUNC(wifi_command)
- return wifi_command(iface, cmd, buf, len);
- }
-
- DEFINE_DLFUNC(wifi_start_supplicant, int32_t, int32_t)
- int32_t do_wifi_start_supplicant(int32_t arg) {
- USE_DLFUNC(wifi_start_supplicant)
- return wifi_start_supplicant(arg);
- }
-
- DEFINE_DLFUNC(wifi_stop_supplicant, int32_t, int32_t)
- int32_t do_wifi_stop_supplicant(int32_t arg) {
- USE_DLFUNC(wifi_stop_supplicant)
- return wifi_stop_supplicant(arg);
- }
-
- DEFINE_DLFUNC(wifi_connect_to_supplicant, int32_t, const char*)
- int32_t do_wifi_connect_to_supplicant(const char* iface) {
- USE_DLFUNC(wifi_connect_to_supplicant)
- return wifi_connect_to_supplicant(iface);
- }
-
- DEFINE_DLFUNC(wifi_close_supplicant_connection, void, const char*)
- void do_wifi_close_supplicant_connection(const char* iface) {
- USE_DLFUNC(wifi_close_supplicant_connection)
- wifi_close_supplicant_connection(iface);
- }
-};
-
-// KK implementation.
-// We only redefine the methods that have a different signature than on ICS.
-class KKWpaSupplicantImpl : public ICSWpaSupplicantImpl
-{
-public:
- DEFINE_DLFUNC(wifi_start_supplicant, int32_t, int32_t)
- int32_t do_wifi_start_supplicant(int32_t arg) {
- USE_DLFUNC(wifi_start_supplicant)
- return wifi_start_supplicant(arg);
- }
-
- DEFINE_DLFUNC(wifi_stop_supplicant, int32_t, int32_t)
- int32_t do_wifi_stop_supplicant(int32_t arg) {
- USE_DLFUNC(wifi_stop_supplicant)
- return wifi_stop_supplicant(arg);
- }
-
- DEFINE_DLFUNC(wifi_command, int32_t, const char*, char*, size_t*)
- int32_t do_wifi_command(const char* iface, const char* cmd, char* buf, size_t* len) {
- char command[COMMAND_SIZE];
- if (!strcmp(iface, "p2p0")) {
- // Commands for p2p0 interface don't need prefix
- SprintfLiteral(command, "%s", cmd);
- }
- else {
- SprintfLiteral(command, "IFNAME=%s %s", iface, cmd);
- }
- USE_DLFUNC(wifi_command)
- return wifi_command(command, buf, len);
- }
-};
-
-// Concrete class to use to access the wpa supplicant.
-WpaSupplicant::WpaSupplicant()
-{
- char propVersion[PROPERTY_VALUE_MAX];
- property_get("ro.build.version.sdk", propVersion, "0");
- mSdkVersion = strtol(propVersion, nullptr, 10);
-
- if (mSdkVersion < 16) {
- mImpl = MakeUnique<ICSWpaSupplicantImpl>();
- } else if (mSdkVersion < 19) {
- mImpl = MakeUnique<JBWpaSupplicantImpl>();
- } else {
- mImpl = MakeUnique<KKWpaSupplicantImpl>();
- }
- mWifiHotspotUtils = MakeUnique<WifiHotspotUtils>();
-};
-
-void WpaSupplicant::WaitForEvent(nsAString& aEvent, const nsCString& aInterface)
-{
- CHECK_HWLIB()
-
- char buffer[BUFFER_SIZE];
- int32_t ret = mImpl->do_wifi_wait_for_event(aInterface.get(), buffer, BUFFER_SIZE);
- CheckBuffer(buffer, ret, aEvent);
-}
-
-#define GET_CHAR(prop) NS_ConvertUTF16toUTF8(aOptions.prop).get()
-
-/**
- * Make a subnet mask.
- */
-uint32_t WpaSupplicant::MakeMask(uint32_t len) {
- uint32_t mask = 0;
- for (uint32_t i = 0; i < len; ++i) {
- mask |= (0x80000000 >> i);
- }
- return ntohl(mask);
-}
-
-bool WpaSupplicant::ExecuteCommand(CommandOptions aOptions,
- WifiResultOptions& aResult,
- const nsCString& aInterface)
-{
- CHECK_HWLIB(false)
-
- if (!mWifiHotspotUtils->GetSharedLibrary()) {
- return false;
- }
-
- // Always correlate the opaque ids.
- aResult.mId = aOptions.mId;
-
- if (aOptions.mCmd.EqualsLiteral("command")) {
- size_t len = BUFFER_SIZE - 1;
- char buffer[BUFFER_SIZE];
- NS_ConvertUTF16toUTF8 request(aOptions.mRequest);
- aResult.mStatus = mImpl->do_wifi_command(aInterface.get(), request.get(), buffer, &len);
- nsString value;
- if (aResult.mStatus == 0) {
- if (buffer[len - 1] == '\n') { // remove trailing new lines.
- len--;
- }
- buffer[len] = '\0';
- CheckBuffer(buffer, len, value);
- }
- aResult.mReply = value;
- } else if (aOptions.mCmd.EqualsLiteral("close_supplicant_connection")) {
- mImpl->do_wifi_close_supplicant_connection(aInterface.get());
- } else if (aOptions.mCmd.EqualsLiteral("load_driver")) {
- aResult.mStatus = mImpl->do_wifi_load_driver();
- } else if (aOptions.mCmd.EqualsLiteral("unload_driver")) {
- aResult.mStatus = mImpl->do_wifi_unload_driver();
- } else if (aOptions.mCmd.EqualsLiteral("start_supplicant")) {
- aResult.mStatus = mImpl->do_wifi_start_supplicant(GetWifiP2pSupported() ? 1 : 0);
- } else if (aOptions.mCmd.EqualsLiteral("stop_supplicant")) {
- aResult.mStatus = mImpl->do_wifi_stop_supplicant(0);
- } else if (aOptions.mCmd.EqualsLiteral("connect_to_supplicant")) {
- aResult.mStatus = mImpl->do_wifi_connect_to_supplicant(aInterface.get());
- } else if (aOptions.mCmd.EqualsLiteral("hostapd_command")) {
- size_t len = BUFFER_SIZE - 1;
- char buffer[BUFFER_SIZE];
- NS_ConvertUTF16toUTF8 request(aOptions.mRequest);
- aResult.mStatus = mWifiHotspotUtils->do_wifi_hostapd_command(request.get(),
- buffer,
- &len);
- nsString value;
- if (aResult.mStatus == 0) {
- if (buffer[len - 1] == '\n') { // remove trailing new lines.
- len--;
- }
- buffer[len] = '\0';
- CheckBuffer(buffer, len, value);
- }
- aResult.mReply = value;
- } else if (aOptions.mCmd.EqualsLiteral("hostapd_get_stations")) {
- aResult.mStatus = mWifiHotspotUtils->do_wifi_hostapd_get_stations();
- } else if (aOptions.mCmd.EqualsLiteral("connect_to_hostapd")) {
- aResult.mStatus = mWifiHotspotUtils->do_wifi_connect_to_hostapd();
- } else if (aOptions.mCmd.EqualsLiteral("close_hostapd_connection")) {
- aResult.mStatus = mWifiHotspotUtils->do_wifi_close_hostapd_connection();
-
- } else {
- NS_WARNING("WpaSupplicant::ExecuteCommand : Unknown command");
- printf_stderr("WpaSupplicant::ExecuteCommand : Unknown command: %s",
- NS_ConvertUTF16toUTF8(aOptions.mCmd).get());
- return false;
- }
-
- return true;
-}
-
-// Checks the buffer and do the utf processing.
-void
-WpaSupplicant::CheckBuffer(char* buffer, int32_t length,
- nsAString& aEvent)
-{
- if (length <= 0 || length >= (BUFFER_SIZE - 1)) {
- NS_WARNING("WpaSupplicant::CheckBuffer: Invalid buffer length");
- return;
- }
-
- if (mSdkVersion < 18) {
- buffer[length] = 0;
- LossyConvertUTF8toUTF16(buffer, length, aEvent);
- return;
- }
-
- // After Android JB4.3, the SSIDs have been converted into printable form.
- // In most of cases, SSIDs do not use unprintable characters, but IEEE 802.11
- // standard does not limit the used character set, so anything could be used
- // in an SSID. Convert it to raw data form here.
- char bytesBuffer[BUFFER_SIZE];
- uint32_t bytes = convertToBytes(bytesBuffer, length, buffer);
- if (bytes <= 0 || bytes >= BUFFER_SIZE) {
- NS_WARNING("WpaSupplicant::CheckBuffer: Invalid bytesbuffer length");
- return;
- }
- bytesBuffer[bytes] = 0;
- LossyConvertUTF8toUTF16(bytesBuffer, bytes, aEvent);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 14:13:11 +0000