mirror of https://github.com/sudo-project/sudo.git
126 lines
4.2 KiB
C
126 lines
4.2 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef SUDOERS_LOG_CLIENT_H
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#define SUDOERS_LOG_CLIENT_H
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#include <netinet/in.h> /* for INET6?_ADDRSTRLEN */
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#if defined(HAVE_OPENSSL)
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# if defined(HAVE_WOLFSSL)
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# include <wolfssl/options.h>
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# endif /* HAVE_WOLFSSL */
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# include <openssl/ssl.h>
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# include <sudo_ssl_compat.h>
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#endif /* HAVE_OPENSSL */
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#include <log_server.pb-c.h>
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#ifndef INET_ADDRSTRLEN
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# define INET_ADDRSTRLEN 16
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#endif
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#ifndef INET6_ADDRSTRLEN
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# define INET6_ADDRSTRLEN 46
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#endif
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#if PROTOBUF_C_VERSION_NUMBER < 1003000
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# error protobuf-c version 1.30 or higher required
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#endif
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/* Default ports to listen on */
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#define DEFAULT_PORT "30343"
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#define DEFAULT_PORT_TLS "30344"
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/* Maximum message size (2Mb) */
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#define MESSAGE_SIZE_MAX (2 * 1024 * 1024)
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/* TODO - share with logsrvd/sendlog */
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struct connection_buffer {
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TAILQ_ENTRY(connection_buffer) entries;
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uint8_t *data;
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size_t size;
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size_t len;
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size_t off;
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};
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TAILQ_HEAD(connection_buffer_list, connection_buffer);
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enum client_state {
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ERROR,
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RECV_HELLO,
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SEND_RESTART, /* TODO: currently unimplemented */
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SEND_ACCEPT,
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SEND_ALERT,
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SEND_REJECT,
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SEND_IO,
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SEND_EXIT,
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CLOSING,
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FINISHED
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};
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/* Remote connection closure, non-zero fields must come first. */
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struct client_closure {
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int sock;
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bool read_instead_of_write;
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bool write_instead_of_read;
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bool temporary_write_event;
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bool disabled;
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bool log_io;
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char *server_name;
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#if defined(HAVE_STRUCT_IN6_ADDR)
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char server_ip[INET6_ADDRSTRLEN];
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#else
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char server_ip[INET_ADDRSTRLEN];
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#endif
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#if defined(HAVE_OPENSSL)
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SSL_CTX *ssl_ctx;
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SSL *ssl;
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bool ssl_initialized;
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#endif /* HAVE_OPENSSL */
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bool subcommands;
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enum client_state state;
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enum client_state initial_state; /* XXX - bad name */
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struct connection_buffer_list write_bufs;
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struct connection_buffer_list free_bufs;
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struct connection_buffer read_buf;
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struct sudo_plugin_event *read_ev;
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struct sudo_plugin_event *write_ev;
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struct log_details *log_details;
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struct timespec start_time;
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struct timespec elapsed;
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struct timespec committed;
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char *iolog_id;
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const char *reason;
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};
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/* iolog_client.c */
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struct client_closure *log_server_open(struct log_details *details, struct timespec *start_time, bool log_io, enum client_state initial_state, const char *reason);
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bool log_server_close(struct client_closure *closure, int exit_status, int error);
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bool fmt_client_message(struct client_closure *closure, ClientMessage *msg);
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bool fmt_accept_message(struct client_closure *closure, struct eventlog *evlog);
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bool fmt_reject_message(struct client_closure *closure, struct eventlog *evlog);
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bool fmt_alert_message(struct client_closure *closure, struct eventlog *evlog);
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bool fmt_exit_message(struct client_closure *closure, int exit_status, int error);
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bool fmt_io_buf(struct client_closure *closure, int type, const char *buf, unsigned int len, struct timespec *delay);
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bool fmt_suspend(struct client_closure *closure, const char *signame, struct timespec *delay);
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bool fmt_winsize(struct client_closure *closure, unsigned int lines, unsigned int cols, struct timespec *delay);
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bool log_server_connect(struct client_closure *closure);
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void client_closure_free(struct client_closure *closure);
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bool read_server_hello(struct client_closure *closure);
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extern struct client_closure *client_closure;
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#endif /* SUDOERS_LOG_CLIENT_H */
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