1 /* $OpenBSD: monitor_wrap.h,v 1.54 2026/03/02 02:40:15 djm Exp $ */ 2 3 /* 4 * Copyright 2002 Niels Provos <provos@citi.umich.edu> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef _MM_WRAP_H_ 29 #define _MM_WRAP_H_ 30 31 #define MONITOR_MAX_MSGLEN (4 * 1024 * 1024) 32 /* The configuration has to fit in a monitor message along with other state */ 33 #define MONITOR_MAX_CFGLEN (MONITOR_MAX_MSGLEN - (64 * 1024)) 34 35 enum mm_keytype { MM_NOKEY, MM_HOSTKEY, MM_USERKEY }; 36 37 struct ssh; 38 struct monitor; 39 struct Authctxt; 40 struct sshkey; 41 struct sshauthopt; 42 struct sshkey_sig_details; 43 44 void mm_log_handler(LogLevel, int, const char *, void *); 45 int mm_is_monitor(void); 46 #ifdef WITH_OPENSSL 47 DH *mm_choose_dh(int, int, int); 48 #endif 49 void mm_sshkey_setcompat(struct ssh *); 50 int mm_sshkey_sign(struct ssh *, struct sshkey *, u_char **, size_t *, 51 const u_char *, size_t, const char *, const char *, 52 const char *, u_int compat); 53 void mm_inform_authserv(char *, char *); 54 struct passwd *mm_getpwnamallow(struct ssh *, const char *); 55 char *mm_auth2_read_banner(void); 56 int mm_auth_password(struct ssh *, char *); 57 int mm_key_allowed(enum mm_keytype, const char *, const char *, struct sshkey *, 58 int, struct sshauthopt **); 59 int mm_user_key_allowed(struct ssh *ssh, struct passwd *, struct sshkey *, int, 60 struct sshauthopt **); 61 int mm_hostbased_key_allowed(struct ssh *, struct passwd *, const char *, 62 const char *, struct sshkey *); 63 int mm_sshkey_verify(const struct sshkey *, const u_char *, size_t, 64 const u_char *, size_t, const char *, u_int, struct sshkey_sig_details **); 65 66 void mm_decode_activate_server_options(struct ssh *ssh, struct sshbuf *m); 67 68 #ifdef GSSAPI 69 OM_uint32 mm_ssh_gssapi_server_ctx(Gssctxt **, gss_OID); 70 OM_uint32 mm_ssh_gssapi_accept_ctx(Gssctxt *, 71 gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *); 72 int mm_ssh_gssapi_userok(char *user); 73 OM_uint32 mm_ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t); 74 #endif 75 76 #ifdef USE_PAM 77 void mm_start_pam(struct ssh *ssh); 78 u_int mm_do_pam_account(void); 79 void *mm_sshpam_init_ctx(struct Authctxt *); 80 int mm_sshpam_query(void *, char **, char **, u_int *, char ***, u_int **); 81 int mm_sshpam_respond(void *, u_int, char **); 82 void mm_sshpam_free_ctx(void *); 83 #endif 84 85 #ifdef SSH_AUDIT_EVENTS 86 #include "audit.h" 87 void mm_audit_event(struct ssh *, ssh_audit_event_t); 88 void mm_audit_run_command(const char *); 89 #endif 90 91 struct Session; 92 void mm_terminate(void); 93 int mm_pty_allocate(int *, int *, char *, size_t); 94 void mm_session_pty_cleanup2(struct Session *); 95 96 void mm_send_keystate(struct ssh *, struct monitor*); 97 98 /* state */ 99 struct include_list; 100 void mm_get_state(struct ssh *, struct include_list *, struct sshbuf *, 101 struct sshbuf **, uint64_t *, struct sshbuf **, struct sshbuf **, 102 u_char **, struct sshbuf **, struct sshbuf **); 103 104 /* bsdauth */ 105 int mm_bsdauth_query(void *, char **, char **, u_int *, char ***, u_int **); 106 int mm_bsdauth_respond(void *, u_int, char **); 107 108 /* config / channels glue */ 109 void server_process_permitopen(struct ssh *); 110 void server_process_channel_timeouts(struct ssh *ssh); 111 struct connection_info * 112 server_get_connection_info(struct ssh *, int, int); 113 114 #endif /* _MM_WRAP_H_ */ 115