diff options
Diffstat (limited to 'contrib/examples/extract-handshakes/offset-finder.c')
| -rw-r--r-- | contrib/examples/extract-handshakes/offset-finder.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/contrib/examples/extract-handshakes/offset-finder.c b/contrib/examples/extract-handshakes/offset-finder.c new file mode 100644 index 0000000..d0bc69c --- /dev/null +++ b/contrib/examples/extract-handshakes/offset-finder.c @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. + */ + +struct def { + const char *name; + unsigned long offset; + unsigned long indirection_offset; +}; +extern const struct def defs[]; + +#ifdef __KERNEL__ +#include "../../../src/noise.h" + +const struct def defs[] = { + { "LOCAL_STATIC_PRIVATE_KEY", offsetof(struct noise_static_identity, static_private), offsetof(struct noise_handshake, static_identity) }, + { "LOCAL_EPHEMERAL_PRIVATE_KEY", offsetof(struct noise_handshake, ephemeral_private), -1 }, + { "REMOTE_STATIC_PUBLIC_KEY", offsetof(struct noise_handshake, remote_static), -1 }, + { "PRESHARED_KEY", offsetof(struct noise_handshake, preshared_key), -1 }, + { NULL, 0 } +}; +#else +#include <stdio.h> +int main(int argc, char *argv[]) +{ + puts("declare -A OFFSETS=("); + for (const struct def *def = defs; def->name; ++def) { + printf("\t[%s]=%ld", def->name, def->offset); + if (def->indirection_offset != -1) + printf(",%ld", def->indirection_offset); + putchar('\n'); + } + puts(")"); +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + puts("ENDIAN=big"); +#elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ + puts("ENDIAN=little"); +#else +#error "Unsupported endianness" +#endif + return 0; +} +#endif |