libssh: packet.h Source File

libssh 0.9.6 The SSH library

packet.h
1 /*
2 * This file is part of the SSH Library
3 *
4 * Copyright (c) 2009 by Aris Adamantiadis
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef PACKET_H_
22 #define PACKET_H_
23
24 #include "libssh/wrapper.h"
25
26 struct ssh_socket_struct;
27
28 /* this structure should go someday */
29 typedef struct packet_struct {
30 int valid;
31 uint32_t len;
32 uint8_t type;
33 } PACKET;
34
36 enum ssh_packet_state_e {
38 PACKET_STATE_INIT,
40 PACKET_STATE_SIZEREAD,
43 PACKET_STATE_PROCESSING
44 };
45
46 enum ssh_packet_filter_result_e {
47 SSH_PACKET_UNKNOWN,
48 SSH_PACKET_ALLOWED,
49 SSH_PACKET_DENIED
50 };
51
52 int ssh_packet_send(ssh_session session);
53
54 SSH_PACKET_CALLBACK(ssh_packet_unimplemented);
55 SSH_PACKET_CALLBACK(ssh_packet_disconnect_callback);
56 SSH_PACKET_CALLBACK(ssh_packet_ignore_callback);
57 SSH_PACKET_CALLBACK(ssh_packet_dh_reply);
58 SSH_PACKET_CALLBACK(ssh_packet_newkeys);
59 SSH_PACKET_CALLBACK(ssh_packet_service_accept);
60 SSH_PACKET_CALLBACK(ssh_packet_ext_info);
61
62 #ifdef WITH_SERVER
63 SSH_PACKET_CALLBACK(ssh_packet_kexdh_init);
64 #endif
65
66 int ssh_packet_send_unimplemented(ssh_session session, uint32_t seqnum);
67 int ssh_packet_parse_type(ssh_session session);
68 //int packet_flush(ssh_session session, int enforce_blocking);
69
70 int ssh_packet_socket_callback(const void *data, size_t len, void *user);
71 void ssh_packet_register_socket_callback(ssh_session session, struct ssh_socket_struct *s);
72 void ssh_packet_set_callbacks(ssh_session session, ssh_packet_callbacks callbacks);
73 void ssh_packet_remove_callbacks(ssh_session session, ssh_packet_callbacks callbacks);
74 void ssh_packet_set_default_callbacks(ssh_session session);
75 void ssh_packet_process(ssh_session session, uint8_t type);
76
77 /* PACKET CRYPT */
78 uint32_t ssh_packet_decrypt_len(ssh_session session, uint8_t *destination, uint8_t *source);
79 int ssh_packet_decrypt(ssh_session session, uint8_t *destination, uint8_t *source,
80 size_t start, size_t encrypted_size);
81 unsigned char *ssh_packet_encrypt(ssh_session session,
82 void *packet,
83 uint32_t len);
84 int ssh_packet_hmac_verify(ssh_session session, const void *data, size_t len,
85 unsigned char *mac, enum ssh_hmac_e type);
86 int ssh_packet_set_newkeys(ssh_session session,
87 enum ssh_crypto_direction_e direction);
88 struct ssh_crypto_struct *ssh_packet_get_current_crypto(ssh_session session,
89 enum ssh_crypto_direction_e direction);
90
91 #endif /* PACKET_H_ */
SSH_PACKET_CALLBACK
#define SSH_PACKET_CALLBACK(name)
This macro declares a packet callback handler.
Definition: callbacks.h:527
packet_struct
Definition: packet.h:29
ssh_crypto_struct
Definition: crypto.h:106
ssh_packet_callbacks_struct
Definition: callbacks.h:530
ssh_session_struct
Definition: session.h:109
ssh_socket_struct
Definition: socket.c:78