/* only used during connection */
struct stream * APP_CC
libxrdp_force_read(struct trans* trans)
{
int bytes;
struct stream *s;
s = trans->in_s;
init_stream(s, 32 * 1024);
if (trans_force_read(trans, 4) != 0)
{
g_writeln("libxrdp_force_read: error");
return 0;
}
bytes = libxrdp_get_pdu_bytes(s->data);
if (bytes < 1)
{
g_writeln("libxrdp_force_read: error");
return 0;
}
if (bytes > 32 * 1024)
{
g_writeln("libxrdp_force_read: error");
return 0;
}
if (trans_force_read(trans, bytes - 4) != 0)
{
g_writeln("libxrdp_force_read: error");
return 0;
}
return s;
}
static int
xrdp_caps_process_glyphcache(struct xrdp_rdp *self, struct stream *s,
int len)
{
int glyph_support_level;
if (len < 40 + 4 + 2 + 2) /* MS-RDPBCGR 2.2.7.1.8 */
{
g_writeln("xrdp_caps_process_glyphcache: error");
return 1;
}
in_uint8s(s, 40); /* glyph cache */
in_uint8s(s, 4); /* frag cache */
in_uint16_le(s, glyph_support_level);
in_uint8s(s, 2); /* pad */
if (glyph_support_level == GLYPH_SUPPORT_ENCODE)
{
self->client_info.use_cache_glyph_v2 = 1;
}
g_writeln("xrdp_caps_process_glyphcache: support level %d ",
glyph_support_level);
return 0;
}
enum logReturns DEFAULT_CC
internalReadConfiguration(const char *inFilename, const char *applicationName)
{
int fd;
enum logReturns ret = LOG_GENERAL_ERROR;
struct list *sec;
struct list *param_n;
struct list *param_v;
if (inFilename == NULL)
{
g_writeln("The inifile is null to readConfiguration!");
return ret;
}
fd = g_file_open(inFilename);
if (-1 == fd)
{
ret = LOG_ERROR_NO_CFG;
g_writeln("We could not open the configuration file to read log parameters");
return ret;
}
/* we initialize the memory for the configuration and set all content
to zero. */
ret = internalInitAndAllocStruct();
if (ret != LOG_STARTUP_OK)
{
g_file_close(fd);
return ret;
}
sec = list_create();
sec->auto_free = 1;
file_read_sections(fd, sec);
param_n = list_create();
param_n->auto_free = 1;
param_v = list_create();
param_v->auto_free = 1;
/* read logging config */
ret = internal_config_read_logging(fd, g_staticLogConfig, param_n,
param_v, applicationName);
if (ret != LOG_STARTUP_OK)
{
g_file_close(fd);
return ret;
}
/* cleanup */
list_delete(sec);
list_delete(param_v);
list_delete(param_n);
g_file_close(fd);
return ret;
}
static int APP_CC
xrdp_caps_process_frame_ack(struct xrdp_rdp *self, struct stream *s, int len)
{
g_writeln("xrdp_caps_process_frame_ack:");
self->client_info.use_frame_acks = 1;
in_uint32_le(s, self->client_info.max_unacknowledged_frame_count);
g_writeln(" max_unacknowledged_frame_count %d", self->client_info.max_unacknowledged_frame_count);
return 0;
}
static int APP_CC
xrdp_caps_process_surface_cmds(struct xrdp_rdp *self, struct stream *s, int len)
{
int cmdFlags;
g_writeln("xrdp_caps_process_surface_cmds:");
in_uint32_le(s, cmdFlags);
in_uint8s(s, 4); /* reserved */
g_writeln(" cmdFlags 0x%08x", cmdFlags);
return 0;
}
void xrdp_shutdown(int sig)
{
LONG_PTR threadid;
threadid = tc_get_threadid();
g_writeln("shutting down");
g_writeln("signal %d threadid %p", sig, threadid);
if (WaitForSingleObject(g_TermEvent, 0) != WAIT_OBJECT_0)
SetEvent(g_TermEvent);
}
enum logReturns DEFAULT_CC
log_start_from_param(const struct log_config *iniParams)
{
enum logReturns ret = LOG_GENERAL_ERROR;
if (g_staticLogConfig != NULL)
{
log_message(LOG_LEVEL_ALWAYS, "Log already initialized");
return ret;
}
if (iniParams == NULL)
{
g_writeln("inparam to log_start_from_param is NULL");
return ret;
}
else
{
/*Copy the struct information*/
ret = internalInitAndAllocStruct();
if (ret != LOG_STARTUP_OK)
{
g_writeln("internalInitAndAllocStruct failed");
return ret;
}
g_staticLogConfig->enable_syslog = iniParams->enable_syslog;
g_staticLogConfig->fd = iniParams->fd;
g_staticLogConfig->log_file = g_strdup(iniParams->log_file);
g_staticLogConfig->log_level = iniParams->log_level;
g_staticLogConfig->log_lock = iniParams->log_lock;
g_staticLogConfig->log_lock_attr = iniParams->log_lock_attr;
g_staticLogConfig->program_name = iniParams->program_name;
g_staticLogConfig->syslog_level = iniParams->syslog_level;
ret = internal_log_start(g_staticLogConfig);
if (ret != LOG_STARTUP_OK)
{
g_writeln("Could not start log");
if (g_staticLogConfig != NULL)
{
g_free(g_staticLogConfig);
g_staticLogConfig = NULL;
}
}
}
return ret;
}
void DEFAULT_CC
xrdp_shutdown(int sig)
{
tbus threadid;
threadid = tc_get_threadid();
g_writeln("shutting down");
g_writeln("signal %d threadid %p", sig, threadid);
if (!g_is_wait_obj_set(g_term_event))
{
g_set_wait_obj(g_term_event);
}
}
void APP_CC
list_dump_items(struct list* self)
{
int index;
if (self->count == 0)
{
g_writeln("List is empty");
}
for (index = 0; index < self->count; index++)
{
g_writeln("%d: %s", index, list_get_item(self, index));
}
}
static int
xrdp_caps_process_frame_ack(struct xrdp_rdp *self, struct stream *s, int len)
{
g_writeln("xrdp_caps_process_frame_ack:");
self->client_info.use_frame_acks = 1;
in_uint32_le(s, self->client_info.max_unacknowledged_frame_count);
if (self->client_info.max_unacknowledged_frame_count < 0)
{
g_writeln(" invalid max_unacknowledged_frame_count value (%d), setting to 0",
self->client_info.max_unacknowledged_frame_count);
self->client_info.max_unacknowledged_frame_count = 0;
}
g_writeln(" max_unacknowledged_frame_count %d", self->client_info.max_unacknowledged_frame_count);
return 0;
}
/* return error */
int DEFAULT_CC
lib_mod_set_param(struct mod* mod, char* name, char* value)
{
if (g_strcasecmp(name, "username") == 0)
{
g_strncpy(mod->username, value, 255);
}
else if (g_strcasecmp(name, "password") == 0)
{
g_strncpy(mod->password, value, 255);
}
else if (g_strcasecmp(name, "ip") == 0)
{
g_strncpy(mod->ip, value, 255);
}
else if (g_strcasecmp(name, "port") == 0)
{
g_strncpy(mod->port, value, 255);
}
else if (g_strcasecmp(name, "rfx") == 0)
{
mod->rfx = g_atoi(value);
g_writeln("mod->rfx = %d",mod->rfx);
}
return 0;
}
/**
* Converts a string representing th log level to a value
* @param buf
* @return
*/
enum logLevels DEFAULT_CC
internal_log_text2level(const char *buf)
{
if (0 == g_strcasecmp(buf, "0") ||
0 == g_strcasecmp(buf, "core"))
{
return LOG_LEVEL_ALWAYS;
}
else if (0 == g_strcasecmp(buf, "1") ||
0 == g_strcasecmp(buf, "error"))
{
return LOG_LEVEL_ERROR;
}
else if (0 == g_strcasecmp(buf, "2") ||
0 == g_strcasecmp(buf, "warn") ||
0 == g_strcasecmp(buf, "warning"))
{
return LOG_LEVEL_WARNING;
}
else if (0 == g_strcasecmp(buf, "3") ||
0 == g_strcasecmp(buf, "info"))
{
return LOG_LEVEL_INFO;
}
else if (0 == g_strcasecmp(buf, "4") ||
0 == g_strcasecmp(buf, "debug"))
{
return LOG_LEVEL_DEBUG;
}
g_writeln("Your configured log level is corrupt - we use debug log level");
return LOG_LEVEL_DEBUG;
}
/**
* @brief Converts xrdp log levels to textual logging levels
* @param lvl logging level
* @param str pointer to a string, must be allocated before
* @return The log string in str pointer.
*
*/
void DEFAULT_CC
internal_log_lvl2str(const enum logLevels lvl, char *str)
{
switch (lvl)
{
case LOG_LEVEL_ALWAYS:
snprintf(str, 9, "%s", "[CORE ] ");
break;
case LOG_LEVEL_ERROR:
snprintf(str, 9, "%s", "[ERROR] ");
break;
case LOG_LEVEL_WARNING:
snprintf(str, 9, "%s", "[WARN ] ");
break;
case LOG_LEVEL_INFO:
snprintf(str, 9, "%s", "[INFO ] ");
break;
case LOG_LEVEL_DEBUG:
snprintf(str, 9, "%s", "[DEBUG] ");
break;
default:
snprintf(str, 9, "%s", "PRG ERR!");
g_writeln("Programming error - undefined log level!!!");
}
}
/* returns error */
int APP_CC
send_channel_data(int chan_id, char *data, int size)
{
int index;
//g_writeln("send_channel_data chan_id %d size %d", chan_id, size);
LOGM((LOG_LEVEL_DEBUG, "chansrv::send_channel_data: size %d", size));
if (chan_id == -1)
{
g_writeln("send_channel_data: error, chan_id is -1");
return 1;
}
for (index = 0; index < g_num_chan_items; index++)
{
if (g_chan_items[index].id == chan_id)
{
add_data_to_chan_item(g_chan_items + index, data, size);
check_chan_items();
return 0;
}
}
return 1;
}
/**
* Creates a string consisting of all parameters that is hosted in the param list
* @param self
* @param outstr, allocate this buffer before you use this function
* @param len the allocated len for outstr
* @return
*/
char *APP_CC
dumpItemsToString(struct list *self, char *outstr, int len)
{
g_memset(outstr, 0, len);
int index;
tbus item;
int totalLen = 0;
if (self->count == 0)
{
g_writeln("List is empty");
}
for (index = 0; index < self->count; index++)
{
/* +1 = one space*/
totalLen = totalLen + g_strlen((char *)list_get_item(self, index)) + 1;
if (len > totalLen)
{
g_strcat(outstr, (char *)list_get_item(self, index));
g_strcat(outstr, " ");
}
}
return outstr ;
}
/* produce a hex dump */
void APP_CC
g_hexdump(char* p, int len)
{
unsigned char* line;
int i;
int thisline;
int offset;
line = (unsigned char*)p;
offset = 0;
while (offset < len)
{
g_printf("%04x ", offset);
thisline = len - offset;
if (thisline > 16)
{
thisline = 16;
}
for (i = 0; i < thisline; i++)
{
g_printf("%02x ", line[i]);
}
for (; i < 16; i++)
{
g_printf(" ");
}
for (i = 0; i < thisline; i++)
{
g_printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
}
g_writeln("");
offset += thisline;
line += thisline;
}
}
int APP_CC
xrdp_audit(struct xrdp_process *process, const char*action, const char* message)
{
// This sends an http 0.9 request, i.e. no headers
char client_ip[256] = {0,};
char data[4096] = {0,};
char username[256] = {0,};
char device_name[256] = {0,};
char accesstoken[256] = {0,};
xrdp_mm_get_value(process->wm->mm, "osirium_account", username, 255);
xrdp_mm_get_value(process->wm->mm, "device_name", device_name, 255);
xrdp_mm_get_value(process->wm->mm, "accesstoken", accesstoken, 255);
xrdp_mm_get_value(process->wm->mm, "client_ip_addr", client_ip, 255);
if (username[0] == 0)
{
g_snprintf(username, 255, "%s", g_getenv("USER"));
}
if (device_name[0] == 0)
{
g_strcpy(device_name, "unknown");
}
if (accesstoken[0] == 0)
{
g_strcpy(accesstoken, "unknown");
}
g_snprintf(data, sizeof(data)-1, REQUEST_TEMPLATE,
username, //process->wm->session->client_info->username,// username
"rdp", // type
device_name, //process->session->client_info->hostname, // devicename
action, // action
accesstoken, // accesstoken
// process->server_trans->skt
client_ip //process->session->client_info->hostname // client_ip
);
g_writeln(data);
fflush(stdout);
// open socket
int sck = g_tcp_socket();
fflush(stdout);
if (g_tcp_connect(sck, AUDIT_ADDRESS, AUDIT_PORT) == 0)
{
// left as blocking socket !!
fflush(stdout);
// get url
int sent = g_tcp_send(sck, data, g_strlen(data), 0);
if ( g_tcp_can_recv(sck, 1000) > 0) // at most 1 second
{
// read response and ignore.
int rlen = g_tcp_recv(sck, data, sizeof(data)-1, 0);
}
else
{
}
fflush(stdout);
// close socket
g_tcp_close(sck);
}
}
static int APP_CC
xrdp_caps_process_general(struct xrdp_rdp *self, struct stream *s,
int len)
{
int extraFlags;
int client_does_fastpath_output;
if (len < 10 + 2)
{
g_writeln("xrdp_caps_process_general: error");
return 1;
}
in_uint16_le(s, self->client_info.client_os_major); /* osMajorType (2 bytes) */
in_uint16_le(s, self->client_info.client_os_minor); /* osMinorType (2 bytes) */
in_uint8s(s, 6);
in_uint16_le(s, extraFlags); /* extraFlags (2 bytes) */
self->client_info.op1 = extraFlags & NO_BITMAP_COMPRESSION_HDR;
/* use_compact_packets is pretty much 'use rdp5' */
self->client_info.use_compact_packets = (extraFlags != 0);
/* op2 is a boolean to use compact bitmap headers in bitmap cache */
/* set it to same as 'use rdp5' boolean */
self->client_info.op2 = self->client_info.use_compact_packets;
/* FASTPATH_OUTPUT_SUPPORTED 0x0001 */
client_does_fastpath_output = extraFlags & FASTPATH_OUTPUT_SUPPORTED;
if ((self->client_info.use_fast_path & 1) && !client_does_fastpath_output)
{
/* server supports fast path output and client does not, turn it off */
self->client_info.use_fast_path &= ~1;
}
return 0;
}
int APP_CC
xrdp_caps_process_rail(struct xrdp_rdp *self, struct stream *s, int len)
{
int i32;
if (len < 4)
{
g_writeln("xrdp_caps_process_rail: error");
return 1;
}
in_uint32_le(s, i32);
self->client_info.rail_support_level = i32;
g_writeln("xrdp_process_capset_rail: rail_support_level %d",
self->client_info.rail_support_level);
return 0;
}
enum logReturns DEFAULT_CC
internal_log_start(struct log_config *l_cfg)
{
enum logReturns ret = LOG_GENERAL_ERROR;
if (0 == l_cfg)
{
ret = LOG_ERROR_MALLOC;
return ret;
}
/* if logfile is NULL, we return error */
if (0 == l_cfg->log_file)
{
g_writeln("log_file not properly assigned");
return ret;
}
/* if progname is NULL, we return error */
if (0 == l_cfg->program_name)
{
g_writeln("program_name not properly assigned");
return ret;
}
/* open file */
l_cfg->fd = internal_log_file_open(l_cfg->log_file);
if (-1 == l_cfg->fd)
{
return LOG_ERROR_FILE_OPEN;
}
/* if syslog is enabled, open it */
if (l_cfg->enable_syslog)
{
openlog(l_cfg->program_name, LOG_CONS | LOG_PID, LOG_DAEMON);
}
#ifdef LOG_ENABLE_THREAD
pthread_mutexattr_init(&(l_cfg->log_lock_attr));
pthread_mutex_init(&(l_cfg->log_lock), &(l_cfg->log_lock_attr));
#endif
return LOG_STARTUP_OK;
}
static int APP_CC
xrdp_caps_process_cache_v3_codec_id(struct xrdp_rdp *self, struct stream *s,
int len)
{
int codec_id;
if (len < 1)
{
g_writeln("xrdp_caps_process_cache_v3_codec_id: error");
return 1;
}
in_uint8(s, codec_id);
g_writeln("xrdp_caps_process_cache_v3_codec_id: cache_v3_codec_id %d",
codec_id);
self->client_info.v3_codec_id = codec_id;
return 0;
}
void DEFAULT_CC
logd_shutdown(int sig)
{
g_writeln("shutdown xrdp-logd daemon");
g_tcp_close(log_socket);
g_file_close(log_fd);
running = 0;
}
int EXPORT_CC
libxrdp_get_pdu_bytes(const char *aheader)
{
int rv;
const tui8 *header;
rv = -1;
header = (const tui8 *) aheader;
if (header[0] == 0x03)
{
/* TPKT */
rv = (header[2] << 8) | header[3];
}
else if (header[0] == 0x30)
{
/* TSRequest (NLA) */
if (header[1] & 0x80)
{
if ((header[1] & ~(0x80)) == 1)
{
rv = header[2];
rv += 3;
}
else if ((header[1] & ~(0x80)) == 2)
{
rv = (header[2] << 8) | header[3];
rv += 4;
}
else
{
g_writeln("libxrdp_get_pdu_bytes: error TSRequest!");
return -1;
}
}
else
{
rv = header[1];
rv += 2;
}
}
else
{
/* Fast-Path */
if (header[1] & 0x80)
{
rv = ((header[1] & 0x7F) << 8) | header[2];
}
else
{
rv = header[1];
}
}
return rv;
}
void APP_CC
logd_main_loop()
{
int client = 0;
char buffer[1024];
int count;
log_fd = open(LOGGING_FILE, O_WRONLY | O_CREAT | O_APPEND | O_SYNC, S_IRUSR | S_IWUSR);
g_mkdir("/var/spool/xrdp");
g_chmod_hex("/var/spool/xrdp", 0775);
if ( g_directory_exist("/var/spool/xrdp") == 0)
{
g_writeln("Unable to create the logging socket");
g_exit(1);
}
g_writeln("xrdp logging spool application\n");
log_socket = g_create_unix_socket(LOGGING_SOCKET);
g_chmod_hex(LOGGING_SOCKET, 0xFFFF);
if ( log_socket == 1)
{
g_writeln("Unable to create logging socket");
return ;
}
if (log_fd < 0){
g_writeln("Unable to create logging instance\n");
}
running = 1;
while(running)
{
client = g_wait_connection(log_socket);
count = g_tcp_recv(client, (char*)buffer, 1024, 0);
while(count > 0)
{
g_file_write(log_fd, buffer, count);
count = g_tcp_recv(client, (char*)buffer, 1024, 0);
}
count = 0;
g_tcp_close(client);
}
}
int APP_CC
xrdp_tls_print_error(char *func, SSL *connection, int value)
{
switch (SSL_get_error(connection, value))
{
case SSL_ERROR_ZERO_RETURN:
g_writeln("xrdp_tls_print_error: %s: Server closed TLS connection",
func);
return 1;
case SSL_ERROR_WANT_READ:
g_writeln("xrdp_tls_print_error: SSL_ERROR_WANT_READ");
return 0;
case SSL_ERROR_WANT_WRITE:
g_writeln("xrdp_tls_print_error: SSL_ERROR_WANT_WRITE");
return 0;
case SSL_ERROR_SYSCALL:
g_writeln("xrdp_tls_print_error: %s: I/O error", func);
return 1;
case SSL_ERROR_SSL:
g_writeln("xrdp_tls_print_error: %s: Failure in SSL library (protocol error?)",
func);
return 1;
default:
g_writeln("xrdp_tls_print_error: %s: Unknown error", func);
return 1;
}
}
/* get the number of client cursor cache */
static int APP_CC
xrdp_caps_process_pointer(struct xrdp_rdp *self, struct stream *s,
int len)
{
int i;
int colorPointerFlag;
int no_new_cursor;
if (len < 2 + 2 + 2)
{
g_writeln("xrdp_caps_process_pointer: error");
return 1;
}
no_new_cursor = self->client_info.pointer_flags & 2;
in_uint16_le(s, colorPointerFlag);
self->client_info.pointer_flags = colorPointerFlag;
in_uint16_le(s, i);
i = MIN(i, 32);
self->client_info.pointer_cache_entries = i;
if (colorPointerFlag & 1)
{
g_writeln("xrdp_caps_process_pointer: client supports "
"new(color) cursor");
in_uint16_le(s, i);
i = MIN(i, 32);
self->client_info.pointer_cache_entries = i;
}
else
{
g_writeln("xrdp_caps_process_pointer: client does not support "
"new(color) cursor");
}
if (no_new_cursor)
{
g_writeln("xrdp_caps_process_pointer: new(color) cursor is "
"disabled by config");
self->client_info.pointer_flags = 0;
}
return 0;
}
int DEFAULT_CC
server_msg(struct xrdp_mod* mod, char* msg, int code)
{
struct xrdp_wm* wm;
if (code == 1)
{
g_writeln(msg);
return 0;
}
wm = (struct xrdp_wm*)(mod->wm);
return xrdp_wm_log_msg(wm, msg);
}
/*Returns 0 on success*/
int g_tcp_set_no_delay(int sck)
{
int ret = 1; /* error */
#if defined(_WIN32)
int option_value;
int option_len;
#else
int option_value;
unsigned int option_len;
#endif
option_len = sizeof(option_value);
/* SOL_TCP IPPROTO_TCP */
if (getsockopt(sck, IPPROTO_TCP, TCP_NODELAY, (char *) &option_value, &option_len) == 0)
{
if (option_value == 0)
{
option_value = 1;
option_len = sizeof(option_value);
if (setsockopt(sck, IPPROTO_TCP, TCP_NODELAY, (char *) &option_value, option_len) == 0)
{
ret = 0; /* success */
}
else
{
g_writeln("Error setting tcp_nodelay");
}
}
}
else
{
g_writeln("Error getting tcp_nodelay");
}
return ret;
}
/*Returns 0 on success*/
int g_tcp_set_keepalive(int sck)
{
int ret = 1; /* error */
#if defined(_WIN32)
int option_value;
int option_len;
#else
int option_value;
unsigned int option_len;
#endif
option_len = sizeof(option_value);
/* SOL_TCP IPPROTO_TCP */
if (getsockopt(sck, SOL_SOCKET, SO_KEEPALIVE, (char *) &option_value, &option_len) == 0)
{
if (option_value == 0)
{
option_value = 1;
option_len = sizeof(option_value);
if (setsockopt(sck, SOL_SOCKET, SO_KEEPALIVE, (char *) &option_value, option_len) == 0)
{
ret = 0; /* success */
}
else
{
g_writeln("Error setting tcp_keepalive");
}
}
}
else
{
g_writeln("Error getting tcp_keepalive");
}
return ret;
}
static int APP_CC
xrdp_caps_process_window(struct xrdp_rdp *self, struct stream *s, int len)
{
int i32;
if (len < 4 + 1 + 2)
{
g_writeln("xrdp_caps_process_window: error");
return 1;
}
in_uint32_le(s, i32);
self->client_info.wnd_support_level = i32;
in_uint8(s, i32);
self->client_info.wnd_num_icon_caches = i32;
in_uint16_le(s, i32);
self->client_info.wnd_num_icon_cache_entries = i32;
g_writeln("xrdp_process_capset_window wnd_support_level %d "
"wnd_num_icon_caches %d wnd_num_icon_cache_entries %d",
self->client_info.wnd_support_level,
self->client_info.wnd_num_icon_caches,
self->client_info.wnd_num_icon_cache_entries);
return 0;
}
