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d8669a2998
xrdp/common/os_calls.h
matt335672 79bec8110c Unify connection fields for the connected client 
The connected client is currently described in two places in
the xrdp_client_info structure:-

1) In the connection_description field. This was introduced as
   field client_ip by commit d797b2cf49
   for xrdp v0.6.0

2) In the client_addr and client_port fields introduced by commit
   25369460a1 for xrdp v0.8.0

This commit unifies these two sets of fields into a single
set of fields describing the connection IP and port (for
AF_INET/AF_INET6 connections only) and a connection description
for all connection types.

The code in os_calls to provide client logging has been simplified
somewhat which should make it easier to add new connection types (e.g.
AF_VSOCK).

The old connection_description field used to be passed to sesman to
inform sesman of the IP address of the client, and also to provide
a string for 'C' field session policy matching. 'C' field session policy
matching does not actually need this string (see #2239), and so now only
the IP field is passed to sesman.
2022-05-18 12:35:07 +01:00

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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2014
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* generic operating system calls
*/
#if !defined(OS_CALLS_H)
#define OS_CALLS_H
#include "arch.h"
struct exit_status
{
/* set to -1 when the process exited via a signal */
uint8_t exit_code;
/* set to 0 when the process exited normally */
uint8_t signal_no;
};
#define g_tcp_can_recv g_sck_can_recv
#define g_tcp_can_send g_sck_can_send
#define g_tcp_recv g_sck_recv
#define g_tcp_send g_sck_send
#define g_tcp_close g_sck_close
#define g_tcp_last_error_would_block g_sck_last_error_would_block
#define g_tcp_set_non_blocking g_sck_set_non_blocking
#define g_tcp_local_socket g_sck_local_socket
#define g_tcp_local_connect g_sck_local_connect
#define g_tcp_listen g_sck_listen
#define g_tcp_local_bind g_sck_local_bind
#define g_tcp_select g_sck_select
#define g_close_wait_obj g_delete_wait_obj
int g_rm_temp_dir(void);
int g_mk_socket_path(const char *app_name);
void g_init(const char *app_name);
void g_deinit(void);
void *g_malloc(int size, int zero);
void g_free(void *ptr);
void g_printf(const char *format, ...) printflike(1, 2);
void g_sprintf(char *dest, const char *format, ...) \
printflike(2, 3);
int g_snprintf(char *dest, int len, const char *format, ...) \
printflike(3, 4);
void g_writeln(const char *format, ...) printflike(1, 2);
void g_write(const char *format, ...) printflike(1, 2);
void g_hexdump(const char *p, int len);
void g_memset(void *ptr, int val, int size);
void g_memcpy(void *d_ptr, const void *s_ptr, int size);
int g_getchar(void);
int g_tcp_set_no_delay(int sck);
int g_tcp_set_keepalive(int sck);
int g_tcp_socket(void);
int g_sck_set_send_buffer_bytes(int sck, int bytes);
int g_sck_get_send_buffer_bytes(int sck, int *bytes);
int g_sck_set_recv_buffer_bytes(int sck, int bytes);
int g_sck_get_recv_buffer_bytes(int sck, int *bytes);
int g_sck_local_socket(void);
int g_sck_local_socketpair(int sck[2]);
int g_sck_vsock_socket(void);
int g_sck_get_peer_cred(int sck, int *pid, int *uid, int *gid);
void g_sck_close(int sck);
int g_tcp_connect(int sck, const char *address, const char *port);
int g_sck_local_connect(int sck, const char *port);
int g_sck_set_non_blocking(int sck);
int g_tcp_bind(int sck, const char *port);
int g_sck_local_bind(int sck, const char *port);
int g_sck_vsock_bind(int sck, const char *port);
int g_sck_vsock_bind_address(int sck, const char *port, const char *address);
int g_tcp_bind_address(int sck, const char *port, const char *address);
int g_sck_listen(int sck);
int g_sck_accept(int sck);
int g_sck_recv(int sck, void *ptr, int len, int flags);
int g_sck_send(int sck, const void *ptr, int len, int flags);
int g_sck_last_error_would_block(int sck);
int g_sck_socket_ok(int sck);
int g_sck_can_send(int sck, int millis);
int g_sck_can_recv(int sck, int millis);
int g_sck_select(int sck1, int sck2);
/**
* Gets the IP address of a connected peer, if it has one
* @param sck File descriptor for peer
* @param ip buffer to write IP address to
* @param bytes Size of ip buffer. Should be at least MAX_IP_ADDRSTRLEN
* @param[out] portptr Optional variable to receive the port number
* @return Pointer to IP for convenience
*
* If the peer has no IP address (for example, it is a Unix Domain Socket),
* or the specified buffer is too small, the returned string is ""
*/
const char *
g_sck_get_peer_ip_address(int sck,
char *ip, unsigned int bytes,
unsigned short *port);
/**
* Gets a description for a connected peer
* @param sck File descriptor for peer
* @param desc buffer to write description to
* @param bytes Size of description buffer. Should be at least
* MAX_PEER_DESCSTRLEN
* @return Pointer to desc for convenience
*
* Unlike g_sck_get_peer_ip_address(), this will return a
* description of some sort for any socket type.
*/
const char *
g_sck_get_peer_description(int sck,
char *desc, unsigned int bytes);
void g_sleep(int msecs);
tintptr g_create_wait_obj(const char *name);
tintptr g_create_wait_obj_from_socket(tintptr socket, int write);
void g_delete_wait_obj_from_socket(tintptr wait_obj);
int g_set_wait_obj(tintptr obj);
int g_reset_wait_obj(tintptr obj);
int g_is_wait_obj_set(tintptr obj);
int g_delete_wait_obj(tintptr obj);
int g_obj_wait(tintptr *read_objs, int rcount, tintptr *write_objs,
int wcount, int mstimeout);
void g_random(char *data, int len);
int g_abs(int i);
int g_memcmp(const void *s1, const void *s2, int len);
int g_file_open(const char *file_name);
int g_file_open_ex(const char *file_name, int aread, int awrite,
int acreate, int atrunc);
int g_file_close(int fd);
int g_file_read(int fd, char *ptr, int len);
int g_file_write(int fd, const char *ptr, int len);
int g_file_seek(int fd, int offset);
int g_file_lock(int fd, int start, int len);
int g_chmod_hex(const char *filename, int flags);
int g_umask_hex(int flags);
int g_chown(const char *name, int uid, int gid);
int g_mkdir(const char *dirname);
char *g_get_current_dir(char *dirname, int maxlen);
int g_set_current_dir(const char *dirname);
int g_file_exist(const char *filename);
int g_file_readable(const char *filename);
int g_directory_exist(const char *dirname);
int g_create_dir(const char *dirname);
int g_create_path(const char *path);
int g_remove_dir(const char *dirname);
int g_file_delete(const char *filename);
int g_file_get_size(const char *filename);
int g_file_get_device_number(const char *filename);
int g_file_get_inode_num(const char *filename);
long g_load_library(char *in);
int g_free_library(long lib);
void *g_get_proc_address(long lib, const char *name);
int g_system(char *aexec);
char *g_get_strerror(void);
int g_get_errno(void);
int g_execvp(const char *p1, char *args[]);
int g_execlp3(const char *a1, const char *a2, const char *a3);
void g_signal_child_stop(void (*func)(int));
void g_signal_segfault(void (*func)(int));
void g_signal_hang_up(void (*func)(int));
void g_signal_user_interrupt(void (*func)(int));
void g_signal_terminate(void (*func)(int));
void g_signal_pipe(void (*func)(int));
void g_signal_usr1(void (*func)(int));
int g_fork(void);
int g_setgid(int pid);
int g_initgroups(const char *user);
int g_getuid(void);
int g_getgid(void);
int g_setuid(int pid);
int g_setsid(void);
int g_getlogin(char *name, unsigned int len);
int g_setlogin(const char *name);
int g_waitchild(void);
int g_waitpid(int pid);
struct exit_status g_waitpid_status(int pid);
void g_clearenv(void);
int g_setenv(const char *name, const char *value, int rewrite);
char *g_getenv(const char *name);
int g_exit(int exit_code);
int g_getpid(void);
int g_sigterm(int pid);
int g_getuser_info(const char *username, int *gid, int *uid, char **shell,
char **dir, char **gecos);
int g_getgroup_info(const char *groupname, int *gid);
int g_check_user_in_group(const char *username, int gid, int *ok);
int g_time1(void);
int g_time2(void);
int g_time3(void);
int g_save_to_bmp(const char *filename, char *data, int stride_bytes,
int width, int height, int depth, int bits_per_pixel);
void *g_shmat(int shmid);
int g_shmdt(const void *shmaddr);
int g_gethostname(char *name, int len);
int g_mirror_memcpy(void *dst, const void *src, int len);
int g_tcp4_socket(void);
int g_tcp4_bind_address(int sck, const char *port, const char *address);
int g_tcp6_socket(void);
int g_tcp6_bind_address(int sck, const char *port, const char *address);
/* glib-style wrappers */
#define g_new(struct_type, n_structs) \
(struct_type *) malloc(sizeof(struct_type) * (n_structs))
#define g_new0(struct_type, n_structs) \
(struct_type *) calloc((n_structs), sizeof(struct_type))
#endif
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