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M. Mert Yıldıran 2ad4838cf5

Add Go crypto/tls eBPF tracer for TLS connections (#1120 )

* Run `go generate tls_tapper.go`

* Add `golang_uprobes.c`

* Add Golang hooks and offsets

* Add `golangConnection` struct and implement `pollGolangReadWrite` method

* Upgrade `github.com/cilium/ebpf` version to `v0.8.1`

* Fix the linter error

* Move map related stuff to `maps.h` and run `go generate tls_tapper.go`

* Remove unused parameter

* Add an environment variable to test Golang locally

* Replace `Libssl` occurrences with `Ssllib` for consistency

* Fix exe path finding

* Temporarily disable OpenSSL

* Fix the mixed offsets and dissection preparation

* Change the read symbol from `net/http.(*persistConn).Read` to `crypto/tls.(*Conn).Read`

* Remove `len` and `cap` fields

* Fix the indent

* Fix the read data address

* Make `golang_dial_writes` key `__u64` and include the PID

* Fix the read data address one more time

* Temporarily disable the PCAP capture

* Add a uprobe for `net/http.(*gzipReader).Read` to read chunked HTTP response body

* Cancel `golang_crypto_tls_read_uprobe` if it's a gzip read

* Make hash map names more meaningful

* Pass the connection address from `write` to `gzip` through a common address between `gzip` and `dial`

* Fix the probed line number links

* Add `golangReader` struct and implement its `Read` method

* Have a single counter pair and request response matcher per Golang connection

* Add `MIZU_GLOBAL_GOLANG_PATH` environment variable

* `NULL` terminate the bytes with `unix.ByteSliceToString`

* Temporarily reject the gzip chunks

* Add malformed TODOs

* Revert "`NULL` terminate the bytes with `unix.ByteSliceToString`"

This reverts commit 7ee7ef7e44.

* Bring back `len` and `cap` fields

* Set `len` and `cap` in `golang_net_http_gzipreader_read_uprobe` as well

* Remove two `TODO`s

* Fix the `key_gzip` offsets

* Compress if it's gzip chunk (probably wrong!)

* Revert "Compress if it's gzip chunk (probably wrong!)"

This reverts commit 094a7c3da4.

* Remove `golang_net_http_gzipreader_read_uprobe`

* Read constant 4KiB

* Use constant read length

* Get the correct len of bytes (saw the second entry)

* Set all buffer sizes to `CHUNK_SIZE`

* Remove a `TODO`

* Revert "Temporarily disable the PCAP capture"

This reverts commit a2da15ef2d.

* Update `golang_crypto_tls_read_uprobe`

* Set the `reader` field of `tlsStream` to fix a `nil pointer dereference` error

* Don't export any fields of `golangConnection`

* Close the reader when we drop the connection

* Add a tracepoint for `sys_enter_close` to detect socket closes

* Rename `socket` struct to `golang_socket`

* Call `should_tap` in Golang uprobes

* Add `log_error` calls

* Revert "Temporarily disable OpenSSL"

This reverts commit f54d9a453f.

* Fix linter

* Revert "Revert "Temporarily disable OpenSSL""

This reverts commit 2433d867af.

* Change `golang_read_writes` map type from `BPF_RINGBUF` to `BPF_PERF_OUTPUT`

* Rename `golang_read_write` to `golang_event`

* Define an error

* Add comments

* Revert "Revert "Revert "Temporarily disable OpenSSL"""

This reverts commit e5a1de9c71.

* Fix `pollGolang`

* Revert "Revert "Revert "Revert "Temporarily disable OpenSSL""""

This reverts commit 6e1bd5d4f3.

* Fix `panic: send on closed channel`

* Revert "Revert "Revert "Revert "Revert "Temporarily disable OpenSSL"""""

This reverts commit 57d0584655.

* Use `findLibraryByPid`

* Revert "Revert "Revert "Revert "Revert "Revert "Temporarily disable OpenSSL""""""

This reverts commit 46f3d290b0.

* Revert "Revert "Revert "Revert "Revert "Revert "Revert "Temporarily disable OpenSSL"""""""

This reverts commit 775c833c06.

* Log tapping Golang

* Fix `Poll`

* Refactor `golang_net_http_dialconn_uprobe`

* Remove an excess error check

* Fix `can only use path@version syntax with 'go get' and 'go install' in module-aware mode` error in `tap/tlstapper/bpf-builder/build.sh`

* Unify Golang and OpenSSL under a single perf event buffer and `tls_chunk` struct

* Generate `tlsTapperChunkType` type (enum) as well

* Use kernel page size for the `sys_closes` perf buffer

* Fix the linter error

* Fix `MIZU_GLOBAL_GOLANG_PID` environment variable's functionality

* Rely on tracepoints for file descriptor retrieval in Golang implementation

* Remove the unnecessary changes

* Move common functions into `common.c`

* Declare `lookup_ssl_info` function to reduce duplication

* Fix linter

* Add comments and TODOs

* Remove `MIZU_GLOBAL_GOLANG_PATH` environment variable

* Update the object files

* Fix indentation

* Update object files

* Add `go_abi_internal.h`

* Fix `lookup_ssl_info`

* Convert indentation to spaces

* Add header guard comment

* Add more comments

* Find the `ret` instructions using Capstone Engine and `uprobe` the `return` statements

* Implement `get_fd_from_tcp_conn` function

* Separate SSL contexts to OpenSSL and Go

* Move `get_count_bytes` from `common.c` to `openssl_uprobes.c`

* Rename everything contains Golang to Go

* Reduce duplication in `go_uprobes.c`

* Update the comments

* Install Capstone in CI and Docker native builds

* Update `devops/install-capstone.sh`

* Add Capstone to AArch64 cross-compilation target

* Fix some of the issues on ARM64

* Delete the map element in `_ex_urpobe`

* Remove an unsued `LOG_` macro

* Rename `aquynh` to `capstone-engine`

* Add comment

* Revert "Fix some of the issues on ARM64"

This reverts commit 0b3eceddf4.

* Revert "Revert "Fix some of the issues on ARM64""

This reverts commit 681534ada1.

* Update object files

* Remove unnecessary return

* Increase timeout

* #run_acceptance_tests

* #run_acceptance_tests

* Fix the `arm64v8` sourced builds

* #run_acceptance_tests

2022-06-12 14:14:41 +03:00

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 #!/bin/bash
 set -e
 docker build . -t up9inc/linux-x86_64-musl-go-libpcap-capstone && docker push up9inc/linux-x86_64-musl-go-libpcap-capstone