Solutions for saveMasterSecretBSSL panic when running on real mobile devices with android 12

[HorseLuke]

On some real mobile devices with android 12 , it may encountering saveMasterSecretBSSL panic when running ecapture.

It will say

panic: runtime error: slice bounds out of range [:1163089247] with length 48

goroutine 38 [running]:
ecapture/user/module.(*MOpenSSLProbe).saveMasterSecretBSSL(0x400011cb00, 0x40000c2600)
        /datadisk/ecapture/ecapture/user/module/probe_openssl.go:620 +0x88c
ecapture/user/module.(*MOpenSSLProbe).Dispatcher(0x0?, {0x5b3180?, 0x40000c2600?})
        /datadisk/ecapture/ecapture/user/module/probe_openssl.go:716 +0x1b4
ecapture/user/module.(*Module).Dispatcher(0x400011cb00, {0x5b3180, 0x40000c2600})
        /datadisk/ecapture/ecapture/user/module/imodule.go:304 +0x80
ecapture/user/module.(*Module).perfEventReader.func1()
        /datadisk/ecapture/ecapture/user/module/imodule.go:231 +0x21c
created by ecapture/user/module.(*Module).perfEventReader
        /datadisk/ecapture/ecapture/user/module/imodule.go:199 +0x170

That's because mobile oem sticks with android12-release branch on android BoringSSL, 'struct bssl::SSL_HANDSHAKE' has no member named 'hints'.

root@e38136079f24:/datadisk/ecapture/ecapture# /bin/bash ./utils/boringssl_offset_1.1.1.sh

/datadisk/ecapture/ecapture/deps/boringssl /datadisk/ecapture/ecapture
Generating /datadisk/ecapture/ecapture/kern/boringssl_1_1_1_kern.c
In file included from /usr/include/strings.h:23,
                 from /usr/include/string.h:462,
                 from ./src/ssl/../crypto/internal.h:117,
                 from ./src/ssl/internal.h:163,
                 from offset.c:18:
offset.c: In function 'int main()':
offset.c:37:28: error: 'struct bssl::SSL_HANDSHAKE' has no member named 'hints'
   37 |     X(bssl::SSL_HANDSHAKE, hints)            \
      |                            ^~~~~
offset.c:37:5: note: in expansion of macro 'X'
   37 |     X(bssl::SSL_HANDSHAKE, hints)            \
      |     ^
offset.c:70:5: note: in expansion of macro 'SSL_STRUCT_OFFSETS'
   70 |     SSL_STRUCT_OFFSETS
      |     ^~~~~~~~~~~~~~~~~~

Solution:

Recompile ecapture with this boringssl_1_1_1_kern.c for branch android12-release on android BoringSSL:

https://github.com/HorseLuke/ecapture/blob/gki-1.0-android11-5.4-android12-5.4/kern/boringssl_1_1_1_kern.c

Commit Log:

https://github.com/HorseLuke/ecapture/commits/gki-1.0-android11-5.4-android12-5.4/kern/boringssl_1_1_1_kern.c

And this is the special modified code for generate such boringssl_1_1_1_kern.c:

HorseLuke@49330bf