1 /* Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
3 * Permission is hereby granted, free of charge, to any person obtaining a
4 * copy of this software and associated documentation files (the "Software"),
5 * to deal in the Software without restriction, including without limitation
6 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
7 * and/or sell copies of the Software, and to permit persons to whom the
8 * Software is furnished to do so, subject to the following conditions:
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
17 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
18 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 * Except as contained in this notice, the names of the authors or their
21 * institutions shall not be used in advertising or otherwise to promote the
22 * sale, use or other dealings in this Software without prior written
23 * authorization from the authors.
26 /* Utility functions implementable using only public APIs. */
29 #include <sys/select.h>
30 #include <sys/socket.h>
31 #include <sys/fcntl.h>
33 #include <netinet/in.h>
44 int XCBPopcount(CARD32 mask)
47 y = (mask >> 1) & 033333333333;
48 y = mask - y - ((y >> 1) & 033333333333);
49 return ((y + (y >> 3)) & 030707070707) % 077;
52 int XCBParseDisplay(const char *name, char **host, int *displayp, int *screenp)
54 int len, display, screen;
55 char *colon, *dot, *end;
57 name = getenv("DISPLAY");
60 colon = strrchr(name, ':');
65 display = strtoul(colon, &dot, 10);
75 screen = strtoul(dot, &end, 10);
76 if(end == dot || *end != '\0')
79 /* At this point, the display string is fully parsed and valid, but
80 * the caller's memory is untouched. */
82 *host = malloc(len + 1);
85 memcpy(*host, name, len);
93 int XCBOpen(const char *host, const int display)
99 /* display specifies TCP */
100 unsigned short port = X_TCP_PORT + display;
101 fd = XCBOpenTCP(host, port);
105 /* display specifies Unix socket */
106 static const char base[] = "/tmp/.X11-unix/X";
107 char file[sizeof(base) + 20];
108 snprintf(file, sizeof(file), "%s%d", base, display);
109 fd = XCBOpenUnix(file);
115 int XCBOpenTCP(const char *host, const unsigned short port)
118 struct sockaddr_in addr;
119 struct hostent *hostaddr = gethostbyname(host);
122 addr.sin_family = AF_INET;
123 addr.sin_port = htons(port);
124 memcpy(&addr.sin_addr, hostaddr->h_addr_list[0], sizeof(addr.sin_addr));
126 fd = socket(PF_INET, SOCK_STREAM, 0);
129 if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
134 int XCBOpenUnix(const char *file)
137 struct sockaddr_un addr = { AF_UNIX };
138 strcpy(addr.sun_path, file);
140 fd = socket(AF_UNIX, SOCK_STREAM, 0);
143 if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
148 XCBConnection *XCBConnect(const char *displayname, int *screenp)
155 if(!XCBParseDisplay(displayname, &host, &display, screenp))
157 fd = XCBOpen(host, display);
162 XCBGetAuthInfo(fd, &auth);
163 c = XCBConnectToFD(fd, &auth);
169 XCBConnection *XCBConnectToDisplayWithAuthInfo(const char *displayname, XCBAuthInfo *auth, int *screenp)
174 if(!XCBParseDisplay(displayname, &host, &display, screenp))
176 fd = XCBOpen(host, display);
181 return XCBConnectToFD(fd, auth);
184 /* backwards compatible interface: remove before 1.0 release */
185 XCBConnection *XCBConnectBasic()
187 XCBConnection *c = XCBConnect(0, 0);
190 perror("XCBConnect");
194 int XCBSync(XCBConnection *c, XCBGenericError **e)
196 XCBGetInputFocusRep *reply = XCBGetInputFocusReply(c, XCBGetInputFocus(c), e);
201 /* The functions beyond this point still use only public interfaces,
202 * but are not themselves part of the public interface. So their
203 * prototypes are in xcbint.h. */
207 int _xcb_set_fd_flags(const int fd)
209 long flags = fcntl(fd, F_GETFL, 0);
213 if(fcntl(fd, F_SETFL, flags) == -1)
215 if(fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)