diff options
author | des <des@FreeBSD.org> | 2006-09-30 13:38:06 +0000 |
---|---|---|
committer | des <des@FreeBSD.org> | 2006-09-30 13:38:06 +0000 |
commit | 4ff234ef46a16b6174dfb970b7bbc9fe2baf3e1a (patch) | |
tree | e8ca9ffe5bcb164be41a74f30a765b86bb38c885 /crypto/openssh/bufaux.c | |
parent | 1a954502d4f34f44a7b1d861ea2dadc117ca6a64 (diff) | |
download | FreeBSD-src-4ff234ef46a16b6174dfb970b7bbc9fe2baf3e1a.zip FreeBSD-src-4ff234ef46a16b6174dfb970b7bbc9fe2baf3e1a.tar.gz |
Merge conflicts.
MFC after: 1 week
Diffstat (limited to 'crypto/openssh/bufaux.c')
-rw-r--r-- | crypto/openssh/bufaux.c | 189 |
1 files changed, 16 insertions, 173 deletions
diff --git a/crypto/openssh/bufaux.c b/crypto/openssh/bufaux.c index f7b5b5f..58ae8e3 100644 --- a/crypto/openssh/bufaux.c +++ b/crypto/openssh/bufaux.c @@ -1,3 +1,4 @@ +/* $OpenBSD: bufaux.c,v 1.44 2006/08/03 03:34:41 deraadt Exp $ */ /* * Author: Tatu Ylonen <ylo@cs.hut.fi> * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland @@ -37,177 +38,19 @@ */ #include "includes.h" -RCSID("$OpenBSD: bufaux.c,v 1.37 2005/11/05 05:01:15 djm Exp $"); -RCSID("$FreeBSD$"); +__RCSID("$FreeBSD$"); -#include <openssl/bn.h> -#include "bufaux.h" -#include "xmalloc.h" -#include "getput.h" -#include "log.h" - -/* - * Stores an BIGNUM in the buffer with a 2-byte msb first bit count, followed - * by (bits+7)/8 bytes of binary data, msb first. - */ -int -buffer_put_bignum_ret(Buffer *buffer, const BIGNUM *value) -{ - int bits = BN_num_bits(value); - int bin_size = (bits + 7) / 8; - u_char *buf = xmalloc(bin_size); - int oi; - char msg[2]; - - /* Get the value of in binary */ - oi = BN_bn2bin(value, buf); - if (oi != bin_size) { - error("buffer_put_bignum_ret: BN_bn2bin() failed: oi %d != bin_size %d", - oi, bin_size); - xfree(buf); - return (-1); - } - - /* Store the number of bits in the buffer in two bytes, msb first. */ - PUT_16BIT(msg, bits); - buffer_append(buffer, msg, 2); - /* Store the binary data. */ - buffer_append(buffer, (char *)buf, oi); - - memset(buf, 0, bin_size); - xfree(buf); - - return (0); -} - -void -buffer_put_bignum(Buffer *buffer, const BIGNUM *value) -{ - if (buffer_put_bignum_ret(buffer, value) == -1) - fatal("buffer_put_bignum: buffer error"); -} +#include <sys/types.h> -/* - * Retrieves an BIGNUM from the buffer. - */ -int -buffer_get_bignum_ret(Buffer *buffer, BIGNUM *value) -{ - u_int bits, bytes; - u_char buf[2], *bin; - - /* Get the number for bits. */ - if (buffer_get_ret(buffer, (char *) buf, 2) == -1) { - error("buffer_get_bignum_ret: invalid length"); - return (-1); - } - bits = GET_16BIT(buf); - /* Compute the number of binary bytes that follow. */ - bytes = (bits + 7) / 8; - if (bytes > 8 * 1024) { - error("buffer_get_bignum_ret: cannot handle BN of size %d", bytes); - return (-1); - } - if (buffer_len(buffer) < bytes) { - error("buffer_get_bignum_ret: input buffer too small"); - return (-1); - } - bin = buffer_ptr(buffer); - BN_bin2bn(bin, bytes, value); - if (buffer_consume_ret(buffer, bytes) == -1) { - error("buffer_get_bignum_ret: buffer_consume failed"); - return (-1); - } - return (0); -} - -void -buffer_get_bignum(Buffer *buffer, BIGNUM *value) -{ - if (buffer_get_bignum_ret(buffer, value) == -1) - fatal("buffer_get_bignum: buffer error"); -} - -/* - * Stores an BIGNUM in the buffer in SSH2 format. - */ -int -buffer_put_bignum2_ret(Buffer *buffer, const BIGNUM *value) -{ - u_int bytes; - u_char *buf; - int oi; - u_int hasnohigh = 0; - - if (BN_is_zero(value)) { - buffer_put_int(buffer, 0); - return 0; - } - if (value->neg) { - error("buffer_put_bignum2_ret: negative numbers not supported"); - return (-1); - } - bytes = BN_num_bytes(value) + 1; /* extra padding byte */ - if (bytes < 2) { - error("buffer_put_bignum2_ret: BN too small"); - return (-1); - } - buf = xmalloc(bytes); - buf[0] = 0x00; - /* Get the value of in binary */ - oi = BN_bn2bin(value, buf+1); - if (oi < 0 || (u_int)oi != bytes - 1) { - error("buffer_put_bignum2_ret: BN_bn2bin() failed: " - "oi %d != bin_size %d", oi, bytes); - xfree(buf); - return (-1); - } - hasnohigh = (buf[1] & 0x80) ? 0 : 1; - buffer_put_string(buffer, buf+hasnohigh, bytes-hasnohigh); - memset(buf, 0, bytes); - xfree(buf); - return (0); -} - -void -buffer_put_bignum2(Buffer *buffer, const BIGNUM *value) -{ - if (buffer_put_bignum2_ret(buffer, value) == -1) - fatal("buffer_put_bignum2: buffer error"); -} - -int -buffer_get_bignum2_ret(Buffer *buffer, BIGNUM *value) -{ - u_int len; - u_char *bin; - - if ((bin = buffer_get_string_ret(buffer, &len)) == NULL) { - error("buffer_get_bignum2_ret: invalid bignum"); - return (-1); - } +#include <openssl/bn.h> - if (len > 0 && (bin[0] & 0x80)) { - error("buffer_get_bignum2_ret: negative numbers not supported"); - xfree(bin); - return (-1); - } - if (len > 8 * 1024) { - error("buffer_get_bignum2_ret: cannot handle BN of size %d", len); - xfree(bin); - return (-1); - } - BN_bin2bn(bin, len, value); - xfree(bin); - return (0); -} +#include <string.h> +#include <stdarg.h> -void -buffer_get_bignum2(Buffer *buffer, BIGNUM *value) -{ - if (buffer_get_bignum2_ret(buffer, value) == -1) - fatal("buffer_get_bignum2: buffer error"); -} +#include "xmalloc.h" +#include "buffer.h" +#include "log.h" +#include "misc.h" /* * Returns integers from the buffer (msb first). @@ -220,7 +63,7 @@ buffer_get_short_ret(u_short *ret, Buffer *buffer) if (buffer_get_ret(buffer, (char *) buf, 2) == -1) return (-1); - *ret = GET_16BIT(buf); + *ret = get_u16(buf); return (0); } @@ -242,7 +85,7 @@ buffer_get_int_ret(u_int *ret, Buffer *buffer) if (buffer_get_ret(buffer, (char *) buf, 4) == -1) return (-1); - *ret = GET_32BIT(buf); + *ret = get_u32(buf); return (0); } @@ -264,7 +107,7 @@ buffer_get_int64_ret(u_int64_t *ret, Buffer *buffer) if (buffer_get_ret(buffer, (char *) buf, 8) == -1) return (-1); - *ret = GET_64BIT(buf); + *ret = get_u64(buf); return (0); } @@ -287,7 +130,7 @@ buffer_put_short(Buffer *buffer, u_short value) { char buf[2]; - PUT_16BIT(buf, value); + put_u16(buf, value); buffer_append(buffer, buf, 2); } @@ -296,7 +139,7 @@ buffer_put_int(Buffer *buffer, u_int value) { char buf[4]; - PUT_32BIT(buf, value); + put_u32(buf, value); buffer_append(buffer, buf, 4); } @@ -305,7 +148,7 @@ buffer_put_int64(Buffer *buffer, u_int64_t value) { char buf[8]; - PUT_64BIT(buf, value); + put_u64(buf, value); buffer_append(buffer, buf, 8); } |