xrdpapi: complete basic WTSVirtual* functions
This commit is contained in:
Jay Sorg
parent
e9aa5df420
commit
97ec29f9ff
@ -17,16 +17,148 @@
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* limitations under the License.
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*/
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/* do not use os_calls in here */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include "xrdpapi.h"
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struct wts_obj
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{
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int fd;
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int status;
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char name[8];
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char dname[128];
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int display_num;
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};
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/*****************************************************************************/
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static int
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get_display_num_from_display(char* display_text)
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{
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int index;
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int mode;
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int host_index;
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int disp_index;
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int scre_index;
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char host[256];
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char disp[256];
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char scre[256];
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index = 0;
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host_index = 0;
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disp_index = 0;
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scre_index = 0;
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mode = 0;
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while (display_text[index] != 0)
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{
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if (display_text[index] == ':')
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{
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mode = 1;
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}
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else if (display_text[index] == '.')
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{
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mode = 2;
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}
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else if (mode == 0)
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{
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host[host_index] = display_text[index];
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host_index++;
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}
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else if (mode == 1)
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{
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disp[disp_index] = display_text[index];
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disp_index++;
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}
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else if (mode == 2)
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{
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scre[scre_index] = display_text[index];
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scre_index++;
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}
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index++;
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}
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host[host_index] = 0;
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disp[disp_index] = 0;
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scre[scre_index] = 0;
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return atoi(disp);
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}
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/*****************************************************************************/
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void*
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WTSVirtualChannelOpen(void* hServer, unsigned int SessionId,
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const char* pVirtualName)
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{
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if (hServer != WTS_CURRENT_SERVER_HANDLE)
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{
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return 0;
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}
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return WTSVirtualChannelOpenEx(SessionId, pVirtualName, 0);
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}
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/*****************************************************************************/
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static int
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can_send(int sck, int millis)
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{
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struct timeval time;
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fd_set wfds;
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int select_rv;
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FD_ZERO(&wfds);
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FD_SET(sck, &wfds);
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time.tv_sec = millis / 1000;
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time.tv_usec = (millis * 1000) % 1000000;
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select_rv = select(sck + 1, 0, &wfds, 0, &time);
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if (select_rv > 0)
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{
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return 1;
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}
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return 0;
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}
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/*****************************************************************************/
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static int
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can_recv(int sck, int millis)
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{
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struct timeval time;
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fd_set rfds;
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int select_rv;
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FD_ZERO(&rfds);
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FD_SET(sck, &rfds);
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time.tv_sec = millis / 1000;
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time.tv_usec = (millis * 1000) % 1000000;
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select_rv = select(sck + 1, &rfds, 0, 0, &time);
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if (select_rv > 0)
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{
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return 1;
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}
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return 0;
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}
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/*****************************************************************************/
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static int
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send_init(struct wts_obj* wts)
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{
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char initmsg[64];
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memset(initmsg, 0, 64);
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if (!can_send(wts->fd, 500))
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{
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return 1;
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}
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if (send(wts->fd, initmsg, 64, 0) != 64)
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{
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return 1;
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}
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return 0;
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}
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@ -36,7 +168,50 @@ WTSVirtualChannelOpenEx(unsigned int SessionId,
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const char* pVirtualName,
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unsigned int flags)
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{
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return 0;
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struct wts_obj* wts;
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char* display_text;
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struct sockaddr_un s;
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int bytes;
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unsigned long llong;
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if (SessionId != WTS_CURRENT_SESSION)
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{
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return 0;
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}
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wts = (struct wts_obj*)malloc(sizeof(struct wts_obj));
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memset(wts, 0, sizeof(struct wts_obj));
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wts->fd = -1;
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display_text = getenv("DISPLAY");
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if (display_text != 0)
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{
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wts->display_num = get_display_num_from_display(display_text);
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}
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if (wts->display_num > 0)
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{
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wts->fd = socket(AF_UNIX, SOCK_STREAM, 0);
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/* set non blocking */
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llong = fcntl(wts->fd, F_GETFL);
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llong = llong | O_NONBLOCK;
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fcntl(wts->fd, F_SETFL, llong);
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/* connect to session chansrv */
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memset(&s, 0, sizeof(struct sockaddr_un));
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s.sun_family = AF_UNIX;
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bytes = sizeof(s.sun_path);
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snprintf(s.sun_path, bytes - 1, "/tmp/.xrdp/xrdpapi_%d", wts->display_num);
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s.sun_path[bytes - 1] = 0;
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bytes = sizeof(struct sockaddr_un);
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if (connect(wts->fd, (struct sockaddr*)&s, bytes) == 0)
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{
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strncpy(wts->name, pVirtualName, 8);
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/* wait for connection to complete and send init */
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if (send_init(wts) == 0)
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{
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/* all ok */
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wts->status = 1;
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}
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}
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}
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return wts;
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}
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/*****************************************************************************/
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@ -44,21 +219,144 @@ int
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WTSVirtualChannelWrite(void* hChannelHandle, const char* Buffer,
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unsigned int Length, unsigned int* pBytesWritten)
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{
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return 0;
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struct wts_obj* wts;
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int error;
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int lerrno;
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wts = (struct wts_obj*)hChannelHandle;
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if (wts == 0)
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{
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return 0;
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}
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if (wts->status != 1)
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{
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return 0;
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}
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if (can_send(wts->fd, 0))
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{
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error = send(wts->fd, Buffer, Length, 0);
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if (error == -1)
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{
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lerrno = errno;
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if ((lerrno == EWOULDBLOCK) || (lerrno == EAGAIN) ||
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(lerrno == EINPROGRESS))
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{
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*pBytesWritten = 0;
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return 1;
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}
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return 0;
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}
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else if (error == 0)
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{
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return 0;
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}
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else if (error > 0)
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{
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*pBytesWritten = error;
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return 1;
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}
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}
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*pBytesWritten = 0;
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return 1;
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}
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/*****************************************************************************/
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int
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WTSVirtualChannelRead(void* nChannelHandle, unsigned int TimeOut,
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WTSVirtualChannelRead(void* hChannelHandle, unsigned int TimeOut,
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char* Buffer, unsigned int BufferSize,
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unsigned int* pBytesRead)
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{
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return 0;
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struct wts_obj* wts;
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int error;
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int lerrno;
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wts = (struct wts_obj*)hChannelHandle;
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if (wts == 0)
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{
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return 0;
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}
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if (wts->status != 1)
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{
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return 0;
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}
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if (can_recv(wts->fd, TimeOut))
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{
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error = recv(wts->fd, Buffer, BufferSize, 0);
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if (error == -1)
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{
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lerrno = errno;
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if ((lerrno == EWOULDBLOCK) || (lerrno == EAGAIN) ||
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(lerrno == EINPROGRESS))
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{
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*pBytesRead = 0;
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return 1;
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}
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return 0;
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}
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else if (error == 0)
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{
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return 0;
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}
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else if (error > 0)
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{
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*pBytesRead = error;
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return 1;
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}
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}
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*pBytesRead = 0;
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return 1;
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}
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/*****************************************************************************/
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int
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WTSVirtualChannelClose(void* openHandle)
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WTSVirtualChannelClose(void* hChannelHandle)
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{
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struct wts_obj* wts;
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wts = (struct wts_obj*)hChannelHandle;
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if (wts == 0)
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{
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return 0;
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}
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if (wts->fd != -1)
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{
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close(wts->fd);
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}
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free(wts);
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return 1;
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}
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/*****************************************************************************/
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int
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WTSVirtualChannelQuery(void* hChannelHandle, WTS_VIRTUAL_CLASS WtsVirtualClass,
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void** ppBuffer, unsigned int* pBytesReturned)
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{
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struct wts_obj* wts;
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wts = (struct wts_obj*)hChannelHandle;
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if (wts == 0)
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{
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return 0;
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}
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if (wts->status != 1)
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{
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return 0;
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}
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if (WtsVirtualClass == WTSVirtualFileHandle)
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{
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*pBytesReturned = 4;
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*ppBuffer = malloc(4);
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memcpy(*ppBuffer, &(wts->fd), 4);
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}
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return 0;
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}
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/*****************************************************************************/
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void
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WTSFreeMemory(void* pMemory)
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{
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if (pMemory != 0)
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{
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free(pMemory);
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}
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}
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@ -17,7 +17,8 @@
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* limitations under the License.
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*/
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/*
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xrdpapi header
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xrdpapi header, do not use os_calls.h, arch.h or any xrdp internal headers
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this file is included in 3rd party apps
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*/
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#if !defined(XRDPAPI_H_)
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@ -26,6 +27,12 @@
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#define WTS_CURRENT_SERVER_HANDLE 0
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#define WTS_CURRENT_SESSION 0xffffffff
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typedef enum _WTS_VIRTUAL_CLASS
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{
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WTSVirtualClientData,
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WTSVirtualFileHandle
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} WTS_VIRTUAL_CLASS;
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/*
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Reference:
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http://msdn.microsoft.com/en-us/library/windows/desktop/aa383464(v=vs.85).aspx
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@ -41,10 +48,15 @@ int
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WTSVirtualChannelWrite(void* hChannelHandle, const char* Buffer,
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unsigned int Length, unsigned int* pBytesWritten);
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int
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WTSVirtualChannelRead(void* nChannelHandle, unsigned int TimeOut,
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WTSVirtualChannelRead(void* hChannelHandle, unsigned int TimeOut,
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char* Buffer, unsigned int BufferSize,
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unsigned int* pBytesRead);
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int
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WTSVirtualChannelClose(void* openHandle);
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WTSVirtualChannelClose(void* hChannelHandle);
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int
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WTSVirtualChannelQuery(void* hChannelHandle, WTS_VIRTUAL_CLASS WtsVirtualClass,
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void** ppBuffer, unsigned int* pBytesReturned);
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void
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WTSFreeMemory(void* pMemory);
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#endif /* XRDPAPI_H_ */
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