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xrdp: parsing for listeners

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This commit is contained in:
Jay Sorg 2018-05-18 11:07:22 -07:00
parent d6229df5a1
commit c236f665d2
1 changed files with 235 additions and 7 deletions
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242
xrdp/xrdp_listen.c
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@ -241,6 +241,231 @@ xrdp_listen_stop_all_listen(struct xrdp_listen *self)
return 0;
}
/*****************************************************************************/
static int
xrdp_listen_parse_filename(char *strout, int strout_max,
const char *strin, int strin_max)
{
int count;
int in;
int strin_index;
int strout_index;
strin_index = 0;
strout_index = 0;
in = 0;
count = 0;
while ((strin_index < strin_max) && (strout_index < strout_max))
{
if (in)
{
if ((strin[strin_index] != ' ') && (strin[strin_index] != ','))
{
strout[strout_index++] = strin[strin_index++];
count++;
continue;
}
else
{
break;
}
}
else
{
if ((strin[strin_index] != ' ') && (strin[strin_index] != ','))
{
in = 1;
strout[strout_index++] = strin[strin_index++];
count++;
continue;
}
}
strin_index++;
count++;
}
strout[strout_index] = 0;
return count;
}
/*****************************************************************************/
static int
xrdp_listen_parse_integer(char *strout, int strout_max,
const char *strin, int strin_max)
{
int count;
int in;
int strin_index;
int strout_index;
strin_index = 0;
strout_index = 0;
in = 0;
count = 0;
while ((strin_index < strin_max) && (strout_index < strout_max))
{
if (in)
{
if ((strin[strin_index] >= '0') && (strin[strin_index] <= '9'))
{
strout[strout_index++] = strin[strin_index++];
count++;
continue;
}
else
{
break;
}
}
else
{
if ((strin[strin_index] >= '0') && (strin[strin_index] <= '9'))
{
in = 1;
strout[strout_index++] = strin[strin_index++];
count++;
continue;
}
}
strin_index++;
count++;
}
strout[strout_index] = 0;
return count;
}
/*****************************************************************************/
static int
xrdp_listen_parse_ipv4(char *strout, int strout_max,
const char *strin, int strin_max)
{
int count;
int in;
int strin_index;
int strout_index;
strin_index = 0;
strout_index = 0;
in = 0;
count = 0;
while ((strin_index < strin_max) && (strout_index < strout_max))
{
if (in)
{
if (((strin[strin_index] >= '0') && (strin[strin_index] <= '9')) ||
(strin[strin_index] == '.'))
{
strout[strout_index++] = strin[strin_index++];
count++;
continue;
}
else
{
break;
}
}
else
{
if ((strin[strin_index] >= '0') && (strin[strin_index] <= '9'))
{
in = 1;
strout[strout_index++] = strin[strin_index++];
count++;
continue;
}
}
strin_index++;
count++;
}
strout[strout_index] = 0;
return count;
}
/*****************************************************************************/
/* address and port are assumed 128 bytes */
static int
xrdp_listen_pp(struct xrdp_listen *self, int *index,
char *address, char *port, int *mode)
{
struct xrdp_startup_params *startup_params;
const char *str;
const char *str_end;
int lindex;
int bytes;
startup_params = self->startup_params;
lindex = *index;
str = startup_params->port + lindex;
str_end = startup_params->port + g_strlen(startup_params->port);
while (str < str_end)
{
if (g_strncmp(str, "unix://.", 8) == 0)
{
str += 8;
lindex += 8;
address[0] = 0;
bytes = xrdp_listen_parse_filename(port, 128, str, str_end - str);
str += bytes;
lindex += bytes;
*mode = TRANS_MODE_UNIX;
*index = lindex;
return 0;
}
else if (g_strncmp(str, "tcp://.:", 8) == 0)
{
str += 8;
lindex += 8;
g_strncpy(address, "127.0.0.1", 127);
bytes = xrdp_listen_parse_integer(port, 128, str, str_end - str);
str += bytes;
lindex += bytes;
*mode = TRANS_MODE_TCP;
*index = lindex;
return 0;
}
else if (g_strncmp(str, "tcp://:", 7) == 0)
{
str += 7;
lindex += 7;
g_strncpy(address, "0.0.0.0", 127);
bytes = xrdp_listen_parse_integer(port, 128, str, str_end - str);
str += bytes;
lindex += bytes;
*mode = TRANS_MODE_TCP;
*index = lindex;
return 0;
}
else if (g_strncmp(str, "tcp://", 6) == 0)
{
str += 6;
lindex += 6;
bytes = xrdp_listen_parse_ipv4(address, 128, str, str_end - str);
str += bytes;
lindex += bytes;
bytes = xrdp_listen_parse_integer(port, 128, str, str_end - str);
str += bytes;
lindex += bytes;
*mode = TRANS_MODE_TCP;
*index = lindex;
return 0;
}
else
{
str++;
lindex++;
}
}
if (lindex == *index)
{
return 1;
}
if (str >= str_end)
{
return 1;
}
*index = lindex;
return 0;
}
/*****************************************************************************/
static int
xrdp_listen_process_startup_params(struct xrdp_listen *self)
@ -249,22 +474,25 @@ xrdp_listen_process_startup_params(struct xrdp_listen *self)
int error;
int cont;
int bytes;
int index;
struct trans *ltrans;
char address[128];
char port[128];
struct xrdp_startup_params *startup_params;
startup_params = self->startup_params;
index = 0;
cont = 1;
while (cont)
{
cont = 0;
g_strncpy(address, "0.0.0.0", 127);
g_strncpy(port, startup_params->port, 127);
mode = TRANS_MODE_TCP;
if (xrdp_listen_pp(self, &index, address, port, &mode) != 0)
{
log_message(LOG_LEVEL_INFO, "xrdp_listen_pp done");
cont = 0;
break;
}
log_message(LOG_LEVEL_INFO, "address [%s] port [%s] mode %d",
address, port, mode);
ltrans = trans_create(mode, 16, 16);
if (ltrans == NULL)
{