=================================================================== RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/monitor_wrap.c,v retrieving revision 1.81 retrieving revision 1.82 diff -u -r1.81 -r1.82 --- src/usr.bin/ssh/monitor_wrap.c 2015/01/13 19:31:40 1.81 +++ src/usr.bin/ssh/monitor_wrap.c 2015/01/19 19:52:16 1.82 @@ -1,4 +1,4 @@ -/* $OpenBSD: monitor_wrap.c,v 1.81 2015/01/13 19:31:40 markus Exp $ */ +/* $OpenBSD: monitor_wrap.c,v 1.82 2015/01/19 19:52:16 markus Exp $ */ /* * Copyright 2002 Niels Provos * Copyright 2002 Markus Friedl @@ -72,6 +72,8 @@ #include "servconf.h" #include "roaming.h" +#include "ssherr.h" + /* Imports */ extern int compat20; extern z_stream incoming_stream; @@ -454,239 +456,21 @@ return (verified); } -/* Export key state after authentication */ -Newkeys * -mm_newkeys_from_blob(u_char *blob, int blen) -{ - Buffer b; - u_int len; - Newkeys *newkey = NULL; - Enc *enc; - Mac *mac; - Comp *comp; - - debug3("%s: %p(%d)", __func__, blob, blen); -#ifdef DEBUG_PK - dump_base64(stderr, blob, blen); -#endif - buffer_init(&b); - buffer_append(&b, blob, blen); - - newkey = xcalloc(1, sizeof(*newkey)); - enc = &newkey->enc; - mac = &newkey->mac; - comp = &newkey->comp; - - /* Enc structure */ - enc->name = buffer_get_string(&b, NULL); - buffer_get(&b, &enc->cipher, sizeof(enc->cipher)); - enc->enabled = buffer_get_int(&b); - enc->block_size = buffer_get_int(&b); - enc->key = buffer_get_string(&b, &enc->key_len); - enc->iv = buffer_get_string(&b, &enc->iv_len); - - if (enc->name == NULL || cipher_by_name(enc->name) != enc->cipher) - fatal("%s: bad cipher name %s or pointer %p", __func__, - enc->name, enc->cipher); - - /* Mac structure */ - if (cipher_authlen(enc->cipher) == 0) { - mac->name = buffer_get_string(&b, NULL); - if (mac->name == NULL || mac_setup(mac, mac->name) != 0) - fatal("%s: can not setup mac %s", __func__, mac->name); - mac->enabled = buffer_get_int(&b); - mac->key = buffer_get_string(&b, &len); - if (len > mac->key_len) - fatal("%s: bad mac key length: %u > %d", __func__, len, - mac->key_len); - mac->key_len = len; - } - - /* Comp structure */ - comp->type = buffer_get_int(&b); - comp->enabled = buffer_get_int(&b); - comp->name = buffer_get_string(&b, NULL); - - len = buffer_len(&b); - if (len != 0) - error("newkeys_from_blob: remaining bytes in blob %u", len); - buffer_free(&b); - return (newkey); -} - -int -mm_newkeys_to_blob(int mode, u_char **blobp, u_int *lenp) -{ - Buffer b; - int len; - Enc *enc; - Mac *mac; - Comp *comp; - Newkeys *newkey = (Newkeys *)packet_get_newkeys(mode); - - debug3("%s: converting %p", __func__, newkey); - - if (newkey == NULL) { - error("%s: newkey == NULL", __func__); - return 0; - } - enc = &newkey->enc; - mac = &newkey->mac; - comp = &newkey->comp; - - buffer_init(&b); - /* Enc structure */ - buffer_put_cstring(&b, enc->name); - /* The cipher struct is constant and shared, you export pointer */ - buffer_append(&b, &enc->cipher, sizeof(enc->cipher)); - buffer_put_int(&b, enc->enabled); - buffer_put_int(&b, enc->block_size); - buffer_put_string(&b, enc->key, enc->key_len); - packet_get_keyiv(mode, enc->iv, enc->iv_len); - buffer_put_string(&b, enc->iv, enc->iv_len); - - /* Mac structure */ - if (cipher_authlen(enc->cipher) == 0) { - buffer_put_cstring(&b, mac->name); - buffer_put_int(&b, mac->enabled); - buffer_put_string(&b, mac->key, mac->key_len); - } - - /* Comp structure */ - buffer_put_int(&b, comp->type); - buffer_put_int(&b, comp->enabled); - buffer_put_cstring(&b, comp->name); - - len = buffer_len(&b); - if (lenp != NULL) - *lenp = len; - if (blobp != NULL) { - *blobp = xmalloc(len); - memcpy(*blobp, buffer_ptr(&b), len); - } - explicit_bzero(buffer_ptr(&b), len); - buffer_free(&b); - return len; -} - -static void -mm_send_kex(Buffer *m, Kex *kex) -{ - buffer_put_string(m, kex->session_id, kex->session_id_len); - buffer_put_int(m, kex->we_need); - buffer_put_int(m, kex->hostkey_type); - buffer_put_int(m, kex->kex_type); - buffer_put_string(m, buffer_ptr(&kex->my), buffer_len(&kex->my)); - buffer_put_string(m, buffer_ptr(&kex->peer), buffer_len(&kex->peer)); - buffer_put_int(m, kex->flags); - buffer_put_cstring(m, kex->client_version_string); - buffer_put_cstring(m, kex->server_version_string); -} - void mm_send_keystate(struct monitor *monitor) { - Buffer m, *input, *output; - u_char *blob, *p; - u_int bloblen, plen; - u_int32_t seqnr, packets; - u_int64_t blocks, bytes; + struct ssh *ssh = active_state; /* XXX */ + struct sshbuf *m; + int r; - buffer_init(&m); - - if (!compat20) { - u_char iv[24]; - u_char *key; - u_int ivlen, keylen; - - buffer_put_int(&m, packet_get_protocol_flags()); - - buffer_put_int(&m, packet_get_ssh1_cipher()); - - debug3("%s: Sending ssh1 KEY+IV", __func__); - keylen = packet_get_encryption_key(NULL); - key = xmalloc(keylen+1); /* add 1 if keylen == 0 */ - keylen = packet_get_encryption_key(key); - buffer_put_string(&m, key, keylen); - explicit_bzero(key, keylen); - free(key); - - ivlen = packet_get_keyiv_len(MODE_OUT); - packet_get_keyiv(MODE_OUT, iv, ivlen); - buffer_put_string(&m, iv, ivlen); - ivlen = packet_get_keyiv_len(MODE_IN); - packet_get_keyiv(MODE_IN, iv, ivlen); - buffer_put_string(&m, iv, ivlen); - goto skip; - } else { - /* Kex for rekeying */ - mm_send_kex(&m, *monitor->m_pkex); - } - - debug3("%s: Sending new keys: %p %p", - __func__, packet_get_newkeys(MODE_OUT), - packet_get_newkeys(MODE_IN)); - - /* Keys from Kex */ - if (!mm_newkeys_to_blob(MODE_OUT, &blob, &bloblen)) - fatal("%s: conversion of newkeys failed", __func__); - - buffer_put_string(&m, blob, bloblen); - free(blob); - - if (!mm_newkeys_to_blob(MODE_IN, &blob, &bloblen)) - fatal("%s: conversion of newkeys failed", __func__); - - buffer_put_string(&m, blob, bloblen); - free(blob); - - packet_get_state(MODE_OUT, &seqnr, &blocks, &packets, &bytes); - buffer_put_int(&m, seqnr); - buffer_put_int64(&m, blocks); - buffer_put_int(&m, packets); - buffer_put_int64(&m, bytes); - packet_get_state(MODE_IN, &seqnr, &blocks, &packets, &bytes); - buffer_put_int(&m, seqnr); - buffer_put_int64(&m, blocks); - buffer_put_int(&m, packets); - buffer_put_int64(&m, bytes); - - debug3("%s: New keys have been sent", __func__); - skip: - /* More key context */ - plen = packet_get_keycontext(MODE_OUT, NULL); - p = xmalloc(plen+1); - packet_get_keycontext(MODE_OUT, p); - buffer_put_string(&m, p, plen); - free(p); - - plen = packet_get_keycontext(MODE_IN, NULL); - p = xmalloc(plen+1); - packet_get_keycontext(MODE_IN, p); - buffer_put_string(&m, p, plen); - free(p); - - /* Compression state */ - debug3("%s: Sending compression state", __func__); - buffer_put_string(&m, &outgoing_stream, sizeof(outgoing_stream)); - buffer_put_string(&m, &incoming_stream, sizeof(incoming_stream)); - - /* Network I/O buffers */ - input = (Buffer *)packet_get_input(); - output = (Buffer *)packet_get_output(); - buffer_put_string(&m, buffer_ptr(input), buffer_len(input)); - buffer_put_string(&m, buffer_ptr(output), buffer_len(output)); - - /* Roaming */ - if (compat20) { - buffer_put_int64(&m, get_sent_bytes()); - buffer_put_int64(&m, get_recv_bytes()); - } - - mm_request_send(monitor->m_recvfd, MONITOR_REQ_KEYEXPORT, &m); + if ((m = sshbuf_new()) == NULL) + fatal("%s: sshbuf_new failed", __func__); + if ((r = ssh_packet_get_state(ssh, m)) != 0) + fatal("%s: get_state failed: %s", + __func__, ssh_err(r)); + mm_request_send(monitor->m_recvfd, MONITOR_REQ_KEYEXPORT, m); debug3("%s: Finished sending state", __func__); - - buffer_free(&m); + sshbuf_free(m); } int