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Diffstat (limited to '')
| -rw-r--r-- | authfd.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/authfd.h b/authfd.h new file mode 100644 index 0000000..7a1c0dd --- /dev/null +++ b/authfd.h @@ -0,0 +1,121 @@ +/* $OpenBSD: authfd.h,v 1.51 2021/12/19 22:10:24 djm Exp $ */ + +/* + * Author: Tatu Ylonen <ylo@cs.hut.fi> + * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland + * All rights reserved + * Functions to interface with the SSH_AUTHENTICATION_FD socket. + * + * As far as I am concerned, the code I have written for this software + * can be used freely for any purpose. Any derived versions of this + * software must be clearly marked as such, and if the derived work is + * incompatible with the protocol description in the RFC file, it must be + * called by a name other than "ssh" or "Secure Shell". + */ + +#ifndef AUTHFD_H +#define AUTHFD_H + +struct sshbuf; +struct sshkey; + +/* List of identities returned by ssh_fetch_identitylist() */ +struct ssh_identitylist { + size_t nkeys; + struct sshkey **keys; + char **comments; +}; + +/* Key destination restrictions */ +struct dest_constraint_hop { + char *user; /* wildcards allowed */ + char *hostname; /* used to matching cert principals and for display */ + int is_ca; + u_int nkeys; /* number of entries in *both* 'keys' and 'key_is_ca' */ + struct sshkey **keys; + int *key_is_ca; +}; +struct dest_constraint { + struct dest_constraint_hop from; + struct dest_constraint_hop to; +}; + +int ssh_get_authentication_socket(int *fdp); +int ssh_get_authentication_socket_path(const char *authsocket, int *fdp); +void ssh_close_authentication_socket(int sock); + +int ssh_lock_agent(int sock, int lock, const char *password); +int ssh_fetch_identitylist(int sock, struct ssh_identitylist **idlp); +void ssh_free_identitylist(struct ssh_identitylist *idl); +int ssh_add_identity_constrained(int sock, struct sshkey *key, + const char *comment, u_int life, u_int confirm, u_int maxsign, + const char *provider, struct dest_constraint **dest_constraints, + size_t ndest_constraints); +int ssh_agent_has_key(int sock, const struct sshkey *key); +int ssh_remove_identity(int sock, const struct sshkey *key); +int ssh_update_card(int sock, int add, const char *reader_id, + const char *pin, u_int life, u_int confirm, + struct dest_constraint **dest_constraints, + size_t ndest_constraints); +int ssh_remove_all_identities(int sock, int version); + +int ssh_agent_sign(int sock, const struct sshkey *key, + u_char **sigp, size_t *lenp, + const u_char *data, size_t datalen, const char *alg, u_int compat); + +int ssh_agent_bind_hostkey(int sock, const struct sshkey *key, + const struct sshbuf *session_id, const struct sshbuf *signature, + int forwarding); + +/* Messages for the authentication agent connection. */ +#define SSH_AGENTC_REQUEST_RSA_IDENTITIES 1 +#define SSH_AGENT_RSA_IDENTITIES_ANSWER 2 +#define SSH_AGENTC_RSA_CHALLENGE 3 +#define SSH_AGENT_RSA_RESPONSE 4 +#define SSH_AGENT_FAILURE 5 +#define SSH_AGENT_SUCCESS 6 +#define SSH_AGENTC_ADD_RSA_IDENTITY 7 +#define SSH_AGENTC_REMOVE_RSA_IDENTITY 8 +#define SSH_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 + +/* private OpenSSH extensions for SSH2 */ +#define SSH2_AGENTC_REQUEST_IDENTITIES 11 +#define SSH2_AGENT_IDENTITIES_ANSWER 12 +#define SSH2_AGENTC_SIGN_REQUEST 13 +#define SSH2_AGENT_SIGN_RESPONSE 14 +#define SSH2_AGENTC_ADD_IDENTITY 17 +#define SSH2_AGENTC_REMOVE_IDENTITY 18 +#define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19 + +/* smartcard */ +#define SSH_AGENTC_ADD_SMARTCARD_KEY 20 +#define SSH_AGENTC_REMOVE_SMARTCARD_KEY 21 + +/* lock/unlock the agent */ +#define SSH_AGENTC_LOCK 22 +#define SSH_AGENTC_UNLOCK 23 + +/* add key with constraints */ +#define SSH_AGENTC_ADD_RSA_ID_CONSTRAINED 24 +#define SSH2_AGENTC_ADD_ID_CONSTRAINED 25 +#define SSH_AGENTC_ADD_SMARTCARD_KEY_CONSTRAINED 26 + +/* generic extension mechanism */ +#define SSH_AGENTC_EXTENSION 27 + +#define SSH_AGENT_CONSTRAIN_LIFETIME 1 +#define SSH_AGENT_CONSTRAIN_CONFIRM 2 +#define SSH_AGENT_CONSTRAIN_MAXSIGN 3 +#define SSH_AGENT_CONSTRAIN_EXTENSION 255 + +/* extended failure messages */ +#define SSH2_AGENT_FAILURE 30 + +/* additional error code for ssh.com's ssh-agent2 */ +#define SSH_COM_AGENT2_FAILURE 102 + +#define SSH_AGENT_OLD_SIGNATURE 0x01 +#define SSH_AGENT_RSA_SHA2_256 0x02 +#define SSH_AGENT_RSA_SHA2_512 0x04 + +#endif /* AUTHFD_H */ |