diff options
| author | dtucker@openbsd.org <dtucker@openbsd.org> | 2020-01-23 10:24:29 +0000 |
|---|---|---|
| committer | Darren Tucker <dtucker@dtucker.net> | 2020-01-23 21:53:54 +1100 |
| commit | 7f8e66fea8c4e2a910df9067cb7638999b7764d5 (patch) | |
| tree | 88c1a4a73a03cfa993fee0c1f23b6327ef1351a1 /packet.c | |
| parent | 69ac4e33023b379e9a8e9b4b6aeeffa6d1fcf6fa (diff) | |
upstream: Make zlib optional. This adds a "ZLIB" build time option
that allows building without zlib compression and associated options. With
feedback from markus@, ok djm@
OpenBSD-Commit-ID: 44c6e1133a90fd15a3aa865bdedc53bab28b7910
Diffstat (limited to 'packet.c')
| -rw-r--r-- | packet.c | 38 |
1 files changed, 36 insertions, 2 deletions
@@ -1,4 +1,4 @@ -/* $OpenBSD: packet.c,v 1.287 2019/12/16 13:58:53 tobhe Exp $ */ +/* $OpenBSD: packet.c,v 1.288 2020/01/23 10:24:29 dtucker Exp $ */ /* * Author: Tatu Ylonen <ylo@cs.hut.fi> * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland @@ -76,7 +76,9 @@ # endif #endif +#ifdef WITH_ZLIB #include <zlib.h> +#endif #include "xmalloc.h" #include "compat.h" @@ -150,9 +152,11 @@ struct session_state { /* Scratch buffer for packet compression/decompression. */ struct sshbuf *compression_buffer; +#ifdef WITH_ZLIB /* Incoming/outgoing compression dictionaries */ z_stream compression_in_stream; z_stream compression_out_stream; +#endif int compression_in_started; int compression_out_started; int compression_in_failures; @@ -609,7 +613,8 @@ ssh_packet_close_internal(struct ssh *ssh, int do_close) state->newkeys[mode] = NULL; ssh_clear_newkeys(ssh, mode); /* next keys */ } - /* compression state is in shared mem, so we can only release it once */ +#ifdef WITH_ZLIB + /* comression state is in shared mem, so we can only release it once */ if (do_close && state->compression_buffer) { sshbuf_free(state->compression_buffer); if (state->compression_out_started) { @@ -635,6 +640,7 @@ ssh_packet_close_internal(struct ssh *ssh, int do_close) inflateEnd(stream); } } +#endif /* WITH_ZLIB */ cipher_free(state->send_context); cipher_free(state->receive_context); state->send_context = state->receive_context = NULL; @@ -690,6 +696,7 @@ ssh_packet_init_compression(struct ssh *ssh) return 0; } +#ifdef WITH_ZLIB static int start_compression_out(struct ssh *ssh, int level) { @@ -821,6 +828,33 @@ uncompress_buffer(struct ssh *ssh, struct sshbuf *in, struct sshbuf *out) /* NOTREACHED */ } +#else /* WITH_ZLIB */ + +static int +start_compression_out(struct ssh *ssh, int level) +{ + return SSH_ERR_INTERNAL_ERROR; +} + +static int +start_compression_in(struct ssh *ssh) +{ + return SSH_ERR_INTERNAL_ERROR; +} + +static int +compress_buffer(struct ssh *ssh, struct sshbuf *in, struct sshbuf *out) +{ + return SSH_ERR_INTERNAL_ERROR; +} + +static int +uncompress_buffer(struct ssh *ssh, struct sshbuf *in, struct sshbuf *out) +{ + return SSH_ERR_INTERNAL_ERROR; +} +#endif /* WITH_ZLIB */ + void ssh_clear_newkeys(struct ssh *ssh, int mode) { |