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authormarha <marha@users.sourceforge.net>2011-04-06 20:33:32 +0000
committermarha <marha@users.sourceforge.net>2011-04-06 20:33:32 +0000
commit704e01fc69ebf6302aa1876906805147248abdaa (patch)
tree55a4a5ffdf2d39f193d218785155a096966f30a6 /libxcb/src/xcb_util.c
parenteaedc21febeadad4cf0e370f5d97e7bdb4470870 (diff)
downloadvcxsrv-704e01fc69ebf6302aa1876906805147248abdaa.tar.gz
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xserver libX11 libxcb mesa git update 6 Apr 2011
Diffstat (limited to 'libxcb/src/xcb_util.c')
-rw-r--r--libxcb/src/xcb_util.c901
1 files changed, 421 insertions, 480 deletions
diff --git a/libxcb/src/xcb_util.c b/libxcb/src/xcb_util.c
index d8a36f170..0128f6485 100644
--- a/libxcb/src/xcb_util.c
+++ b/libxcb/src/xcb_util.c
@@ -1,480 +1,421 @@
-/* Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * Except as contained in this notice, the names of the authors or their
- * institutions shall not be used in advertising or otherwise to promote the
- * sale, use or other dealings in this Software without prior written
- * authorization from the authors.
- */
-
-/* Utility functions implementable using only public APIs. */
-
-#include <assert.h>
-#include <sys/types.h>
-#include <limits.h>
-#ifdef DNETCONN
-#include <netdnet/dnetdb.h>
-#include <netdnet/dn.h>
-#endif
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <unistd.h>
-#include <string.h>
-
-#ifdef _WIN32
-#include "xcb_windefs.h"
-#else
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <fcntl.h>
-#include <netdb.h>
-#endif /* _WIN32 */
-
-#include "xcb.h"
-#include "xcbext.h"
-#include "xcbint.h"
-
-/* must be after "xcbint.h" to get autoconf #defines */
-#if defined(HAVE_TSOL_LABEL_H) && defined(HAVE_IS_SYSTEM_LABELED)
-# include <tsol/label.h>
-# include <sys/stat.h>
-#endif
-
-int xcb_popcount(uint32_t mask)
-{
- uint32_t y;
- y = (mask >> 1) & 033333333333;
- y = mask - y - ((y >> 1) & 033333333333);
- return ((y + (y >> 3)) & 030707070707) % 077;
-}
-
-int xcb_sumof(uint8_t *list, int len)
-{
- int i, s = 0;
- for(i=0; i<len; i++) {
- s += *list;
- list++;
- }
- return s;
-}
-
-static int _xcb_parse_display(const char *name, char **host, char **protocol,
- int *displayp, int *screenp)
-{
- int len, display, screen;
- char *slash, *colon, *dot, *end;
-
- if(!name || !*name)
- name = getenv("DISPLAY");
- if(!name)
- return 0;
-
-#ifdef HAVE_LAUNCHD
- if(strncmp(name, "/tmp/launch", 11) == 0)
- slash = NULL;
- else
-#endif
- slash = strrchr(name, '/');
-
- if (slash) {
- len = slash - name;
- if (protocol) {
- *protocol = malloc(len + 1);
- if(!*protocol)
- return 0;
- memcpy(*protocol, name, len);
- (*protocol)[len] = '\0';
- }
- name = slash + 1;
- } else
- if (protocol)
- *protocol = NULL;
-
- colon = strrchr(name, ':');
- if(!colon)
- goto error_out;
- len = colon - name;
- ++colon;
- display = strtoul(colon, &dot, 10);
- if(dot == colon)
- goto error_out;
- if(*dot == '\0')
- screen = 0;
- else
- {
- if(*dot != '.')
- goto error_out;
- ++dot;
- screen = strtoul(dot, &end, 10);
- if(end == dot || *end != '\0')
- goto error_out;
- }
- /* At this point, the display string is fully parsed and valid, but
- * the caller's memory is untouched. */
-
- *host = malloc(len + 1);
- if(!*host)
- goto error_out;
- memcpy(*host, name, len);
- (*host)[len] = '\0';
- *displayp = display;
- if(screenp)
- *screenp = screen;
- return 1;
-
-error_out:
- if (protocol) {
- free(*protocol);
- *protocol = NULL;
- }
-
- return 0;
-}
-
-int xcb_parse_display(const char *name, char **host, int *displayp,
- int *screenp)
-{
- return _xcb_parse_display(name, host, NULL, displayp, screenp);
-}
-
-static int _xcb_open_tcp(const char *host, char *protocol, const unsigned short port);
-#ifndef _WIN32
-static int _xcb_open_unix(char *protocol, const char *file);
-#endif /* !WIN32 */
-#ifdef DNETCONN
-static int _xcb_open_decnet(const char *host, char *protocol, const unsigned short port);
-#endif
-#ifdef HAVE_ABSTRACT_SOCKETS
-static int _xcb_open_abstract(char *protocol, const char *file, size_t filelen);
-#endif
-
-static int _xcb_open(const char *host, char *protocol, const int display)
-{
- int fd;
- static const char unix_base[] = "/tmp/.X11-unix/X";
- const char *base = unix_base;
- size_t filelen;
- char *file = NULL;
- int actual_filelen;
-
-#ifdef HAVE_LAUNCHD
- if(strncmp(host, "/tmp/launch", 11) == 0) {
- base = host;
- host = "";
- protocol = NULL;
- }
-#endif
-
- if(*host || protocol)
- {
-#ifdef DNETCONN
- /* DECnet displays have two colons, so _xcb_parse_display will have
- left one at the end. However, an IPv6 address can end with *two*
- colons, so only treat this as a DECnet display if host ends with
- exactly one colon. */
- char *colon = strchr(host, ':');
- if(colon && *(colon+1) == '\0')
- {
- *colon = '\0';
- return _xcb_open_decnet(host, protocol, display);
- }
- else
-#endif
- if (protocol
- || strcmp("unix",host)) { /* follow the old unix: rule */
-
- /* display specifies TCP */
- unsigned short port = X_TCP_PORT + display;
- return _xcb_open_tcp(host, protocol, port);
- }
- }
-
-#ifndef _WIN32
-#if defined(HAVE_TSOL_LABEL_H) && defined(HAVE_IS_SYSTEM_LABELED)
- /* Check special path for Unix sockets under Solaris Trusted Extensions */
- if (is_system_labeled())
- {
- struct stat sbuf;
- const char *tsol_base = "/var/tsol/doors/.X11-unix/X";
- char tsol_socket[PATH_MAX];
-
- snprintf(tsol_socket, sizeof(tsol_socket), "%s%d", tsol_base, display);
-
- if (stat(tsol_socket, &sbuf) == 0)
- base = tsol_base;
- }
-#endif
-
- filelen = strlen(base) + 1 + sizeof(display) * 3 + 1;
- file = malloc(filelen);
- if(file == NULL)
- return -1;
-
- /* display specifies Unix socket */
-#ifdef HAVE_LAUNCHD
- if(strncmp(base, "/tmp/launch", 11) == 0)
- actual_filelen = snprintf(file, filelen, "%s:%d", base, display);
- else
-#endif
- actual_filelen = snprintf(file, filelen, "%s%d", base, display);
- if(actual_filelen < 0)
- {
- free(file);
- return -1;
- }
- /* snprintf may truncate the file */
- filelen = MIN(actual_filelen, filelen - 1);
-#ifdef HAVE_ABSTRACT_SOCKETS
- fd = _xcb_open_abstract(protocol, file, filelen);
- if (fd >= 0 || (errno != ENOENT && errno != ECONNREFUSED))
- {
- free(file);
- return fd;
- }
-
-#endif
- fd = _xcb_open_unix(protocol, file);
- free(file);
-
- return fd;
-#endif /* !_WIN32 */
- return -1; /* if control reaches here then something has gone wrong */
-}
-
-static int _xcb_socket(int family, int type, int proto)
-{
- int fd;
-
-#ifdef SOCK_CLOEXEC
- fd = socket(family, type | SOCK_CLOEXEC, proto);
- if (fd == -1 && errno == EINVAL)
-#endif
- {
- fd = socket(family, type, proto);
-#ifndef _WIN32
- if (fd >= 0)
- fcntl(fd, F_SETFD, FD_CLOEXEC);
-#endif
- }
- return fd;
-}
-
-#ifdef DNETCONN
-static int _xcb_open_decnet(const char *host, const char *protocol, const unsigned short port)
-{
- int fd;
- struct sockaddr_dn addr;
- struct accessdata_dn accessdata;
- struct nodeent *nodeaddr = getnodebyname(host);
-
- if(!nodeaddr)
- return -1;
- if (protocol && strcmp("dnet",protocol))
- return -1;
- addr.sdn_family = AF_DECnet;
-
- addr.sdn_add.a_len = nodeaddr->n_length;
- memcpy(addr.sdn_add.a_addr, nodeaddr->n_addr, addr.sdn_add.a_len);
-
- addr.sdn_objnamel = sprintf((char *)addr.sdn_objname, "X$X%d", port);
- if(addr.sdn_objnamel < 0)
- return -1;
- addr.sdn_objnum = 0;
-
- fd = _xcb_socket(PF_DECnet, SOCK_STREAM, 0);
- if(fd == -1)
- return -1;
-
- memset(&accessdata, 0, sizeof(accessdata));
- accessdata.acc_accl = sprintf((char*)accessdata.acc_acc, "%d", getuid());
- if(accessdata.acc_accl < 0)
- return -1;
- setsockopt(fd, DNPROTO_NSP, SO_CONACCESS, &accessdata, sizeof(accessdata));
-
- if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1) {
- close(fd);
- return -1;
- }
- return fd;
-}
-#endif
-
-static int _xcb_open_tcp(const char *host, char *protocol, const unsigned short port)
-{
- int fd = -1;
- struct addrinfo hints;
- char service[6]; /* "65535" with the trailing '\0' */
- struct addrinfo *results, *addr;
- char *bracket;
-
- if (protocol && strcmp("tcp",protocol) && strcmp("inet",protocol)
-#ifdef AF_INET6
- && strcmp("inet6",protocol)
-#endif
- )
- return -1;
-
- if (*host == '\0')
- host = "localhost";
-
- memset(&hints, 0, sizeof(hints));
-#ifdef AI_ADDRCONFIG
- hints.ai_flags |= AI_ADDRCONFIG;
-#endif
-#ifdef AI_NUMERICSERV
- hints.ai_flags |= AI_NUMERICSERV;
-#endif
- hints.ai_family = AF_UNSPEC;
- hints.ai_socktype = SOCK_STREAM;
-
-#ifdef AF_INET6
- /* Allow IPv6 addresses enclosed in brackets. */
- if(host[0] == '[' && (bracket = strrchr(host, ']')) && bracket[1] == '\0')
- {
- *bracket = '\0';
- ++host;
- hints.ai_flags |= AI_NUMERICHOST;
- hints.ai_family = AF_INET6;
- }
-#endif
-
- snprintf(service, sizeof(service), "%hu", port);
- if(getaddrinfo(host, service, &hints, &results))
- /* FIXME: use gai_strerror, and fill in error connection */
- return -1;
-
- for(addr = results; addr; addr = addr->ai_next)
- {
- fd = _xcb_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);
- if(fd >= 0) {
- int on = 1;
- setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
- setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on));
-
- if (connect(fd, addr->ai_addr, addr->ai_addrlen) >= 0)
- break;
- close(fd);
- fd = -1;
- }
- }
- freeaddrinfo(results);
- return fd;
-}
-
-#ifndef _WIN32
-static int _xcb_open_unix(char *protocol, const char *file)
-{
- int fd;
- struct sockaddr_un addr;
-
- if (protocol && strcmp("unix",protocol))
- return -1;
-
- strcpy(addr.sun_path, file);
- addr.sun_family = AF_UNIX;
-#ifdef HAVE_SOCKADDR_SUN_LEN
- addr.sun_len = SUN_LEN(&addr);
-#endif
- fd = _xcb_socket(AF_UNIX, SOCK_STREAM, 0);
- if(fd == -1)
- return -1;
- if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1) {
- close(fd);
- return -1;
- }
- return fd;
-}
-#endif /* !_WIN32 */
-
-#ifdef HAVE_ABSTRACT_SOCKETS
-static int _xcb_open_abstract(char *protocol, const char *file, size_t filelen)
-{
- int fd;
- struct sockaddr_un addr = {0};
- socklen_t namelen;
-
- if (protocol && strcmp("unix",protocol))
- return -1;
-
- strcpy(addr.sun_path + 1, file);
- addr.sun_family = AF_UNIX;
- namelen = offsetof(struct sockaddr_un, sun_path) + 1 + filelen;
-#ifdef HAVE_SOCKADDR_SUN_LEN
- addr.sun_len = 1 + filelen;
-#endif
- fd = _xcb_socket(AF_UNIX, SOCK_STREAM, 0);
- if (fd == -1)
- return -1;
- if (connect(fd, (struct sockaddr *) &addr, namelen) == -1) {
- close(fd);
- return -1;
- }
- return fd;
-}
-#endif
-
-xcb_connection_t *xcb_connect(const char *displayname, int *screenp)
-{
- return xcb_connect_to_display_with_auth_info(displayname, NULL, screenp);
-}
-
-xcb_connection_t *xcb_connect_to_display_with_auth_info(const char *displayname, xcb_auth_info_t *auth, int *screenp)
-{
- int fd, display = 0;
- char *host = NULL;
- char *protocol = NULL;
- xcb_auth_info_t ourauth;
- xcb_connection_t *c;
-
- int parsed = _xcb_parse_display(displayname, &host, &protocol, &display, screenp);
-
- if(!parsed) {
- c = (xcb_connection_t *) &error_connection;
- goto out;
- } else
- fd = _xcb_open(host, protocol, display);
-
- if(fd == -1) {
- c = (xcb_connection_t *) &error_connection;
- goto out;
- }
-
- if(auth) {
- c = xcb_connect_to_fd(fd, auth);
- goto out;
- }
-
- if(_xcb_get_auth_info(fd, &ourauth, display))
- {
- c = xcb_connect_to_fd(fd, &ourauth);
- free(ourauth.name);
- free(ourauth.data);
- }
- else
- c = xcb_connect_to_fd(fd, 0);
-
-out:
- free(host);
- free(protocol);
- return c;
-}
+/* Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the names of the authors or their
+ * institutions shall not be used in advertising or otherwise to promote the
+ * sale, use or other dealings in this Software without prior written
+ * authorization from the authors.
+ */
+
+/* Utility functions implementable using only public APIs. */
+
+#include <assert.h>
+#include <sys/types.h>
+#include <limits.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <string.h>
+
+#ifdef _WIN32
+#include "xcb_windefs.h"
+#else
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <fcntl.h>
+#include <netdb.h>
+#endif /* _WIN32 */
+
+#include "xcb.h"
+#include "xcbext.h"
+#include "xcbint.h"
+
+/* must be after "xcbint.h" to get autoconf #defines */
+#if defined(HAVE_TSOL_LABEL_H) && defined(HAVE_IS_SYSTEM_LABELED)
+# include <tsol/label.h>
+# include <sys/stat.h>
+#endif
+
+int xcb_popcount(uint32_t mask)
+{
+ uint32_t y;
+ y = (mask >> 1) & 033333333333;
+ y = mask - y - ((y >> 1) & 033333333333);
+ return ((y + (y >> 3)) & 030707070707) % 077;
+}
+
+int xcb_sumof(uint8_t *list, int len)
+{
+ int i, s = 0;
+ for(i=0; i<len; i++) {
+ s += *list;
+ list++;
+ }
+ return s;
+}
+
+static int _xcb_parse_display(const char *name, char **host, char **protocol,
+ int *displayp, int *screenp)
+{
+ int len, display, screen;
+ char *slash, *colon, *dot, *end;
+
+ if(!name || !*name)
+ name = getenv("DISPLAY");
+ if(!name)
+ return 0;
+
+#ifdef HAVE_LAUNCHD
+ if(strncmp(name, "/tmp/launch", 11) == 0)
+ slash = NULL;
+ else
+#endif
+ slash = strrchr(name, '/');
+
+ if (slash) {
+ len = slash - name;
+ if (protocol) {
+ *protocol = malloc(len + 1);
+ if(!*protocol)
+ return 0;
+ memcpy(*protocol, name, len);
+ (*protocol)[len] = '\0';
+ }
+ name = slash + 1;
+ } else
+ if (protocol)
+ *protocol = NULL;
+
+ colon = strrchr(name, ':');
+ if(!colon)
+ goto error_out;
+ len = colon - name;
+ ++colon;
+ display = strtoul(colon, &dot, 10);
+ if(dot == colon)
+ goto error_out;
+ if(*dot == '\0')
+ screen = 0;
+ else
+ {
+ if(*dot != '.')
+ goto error_out;
+ ++dot;
+ screen = strtoul(dot, &end, 10);
+ if(end == dot || *end != '\0')
+ goto error_out;
+ }
+ /* At this point, the display string is fully parsed and valid, but
+ * the caller's memory is untouched. */
+
+ *host = malloc(len + 1);
+ if(!*host)
+ goto error_out;
+ memcpy(*host, name, len);
+ (*host)[len] = '\0';
+ *displayp = display;
+ if(screenp)
+ *screenp = screen;
+ return 1;
+
+error_out:
+ if (protocol) {
+ free(*protocol);
+ *protocol = NULL;
+ }
+
+ return 0;
+}
+
+int xcb_parse_display(const char *name, char **host, int *displayp,
+ int *screenp)
+{
+ return _xcb_parse_display(name, host, NULL, displayp, screenp);
+}
+
+static int _xcb_open_tcp(const char *host, char *protocol, const unsigned short port);
+#ifndef _WIN32
+static int _xcb_open_unix(char *protocol, const char *file);
+#endif /* !WIN32 */
+#ifdef HAVE_ABSTRACT_SOCKETS
+static int _xcb_open_abstract(char *protocol, const char *file, size_t filelen);
+#endif
+
+static int _xcb_open(const char *host, char *protocol, const int display)
+{
+ int fd;
+ static const char unix_base[] = "/tmp/.X11-unix/X";
+ const char *base = unix_base;
+ size_t filelen;
+ char *file = NULL;
+ int actual_filelen;
+
+#ifdef HAVE_LAUNCHD
+ if(strncmp(host, "/tmp/launch", 11) == 0) {
+ base = host;
+ host = "";
+ protocol = NULL;
+ }
+#endif
+
+ if(*host || protocol)
+ {
+ if (protocol
+ || strcmp("unix",host)) { /* follow the old unix: rule */
+
+ /* display specifies TCP */
+ unsigned short port = X_TCP_PORT + display;
+ return _xcb_open_tcp(host, protocol, port);
+ }
+ }
+
+#ifndef _WIN32
+#if defined(HAVE_TSOL_LABEL_H) && defined(HAVE_IS_SYSTEM_LABELED)
+ /* Check special path for Unix sockets under Solaris Trusted Extensions */
+ if (is_system_labeled())
+ {
+ struct stat sbuf;
+ const char *tsol_base = "/var/tsol/doors/.X11-unix/X";
+ char tsol_socket[PATH_MAX];
+
+ snprintf(tsol_socket, sizeof(tsol_socket), "%s%d", tsol_base, display);
+
+ if (stat(tsol_socket, &sbuf) == 0)
+ base = tsol_base;
+ }
+#endif
+
+ filelen = strlen(base) + 1 + sizeof(display) * 3 + 1;
+ file = malloc(filelen);
+ if(file == NULL)
+ return -1;
+
+ /* display specifies Unix socket */
+#ifdef HAVE_LAUNCHD
+ if(strncmp(base, "/tmp/launch", 11) == 0)
+ actual_filelen = snprintf(file, filelen, "%s:%d", base, display);
+ else
+#endif
+ actual_filelen = snprintf(file, filelen, "%s%d", base, display);
+ if(actual_filelen < 0)
+ {
+ free(file);
+ return -1;
+ }
+ /* snprintf may truncate the file */
+ filelen = MIN(actual_filelen, filelen - 1);
+#ifdef HAVE_ABSTRACT_SOCKETS
+ fd = _xcb_open_abstract(protocol, file, filelen);
+ if (fd >= 0 || (errno != ENOENT && errno != ECONNREFUSED))
+ {
+ free(file);
+ return fd;
+ }
+
+#endif
+ fd = _xcb_open_unix(protocol, file);
+ free(file);
+
+ return fd;
+#endif /* !_WIN32 */
+ return -1; /* if control reaches here then something has gone wrong */
+}
+
+static int _xcb_socket(int family, int type, int proto)
+{
+ int fd;
+
+#ifdef SOCK_CLOEXEC
+ fd = socket(family, type | SOCK_CLOEXEC, proto);
+ if (fd == -1 && errno == EINVAL)
+#endif
+ {
+ fd = socket(family, type, proto);
+#ifndef _WIN32
+ if (fd >= 0)
+ fcntl(fd, F_SETFD, FD_CLOEXEC);
+#endif
+ }
+ return fd;
+}
+
+
+static int _xcb_open_tcp(const char *host, char *protocol, const unsigned short port)
+{
+ int fd = -1;
+ struct addrinfo hints;
+ char service[6]; /* "65535" with the trailing '\0' */
+ struct addrinfo *results, *addr;
+ char *bracket;
+
+ if (protocol && strcmp("tcp",protocol) && strcmp("inet",protocol)
+#ifdef AF_INET6
+ && strcmp("inet6",protocol)
+#endif
+ )
+ return -1;
+
+ if (*host == '\0')
+ host = "localhost";
+
+ memset(&hints, 0, sizeof(hints));
+#ifdef AI_ADDRCONFIG
+ hints.ai_flags |= AI_ADDRCONFIG;
+#endif
+#ifdef AI_NUMERICSERV
+ hints.ai_flags |= AI_NUMERICSERV;
+#endif
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+
+#ifdef AF_INET6
+ /* Allow IPv6 addresses enclosed in brackets. */
+ if(host[0] == '[' && (bracket = strrchr(host, ']')) && bracket[1] == '\0')
+ {
+ *bracket = '\0';
+ ++host;
+ hints.ai_flags |= AI_NUMERICHOST;
+ hints.ai_family = AF_INET6;
+ }
+#endif
+
+ snprintf(service, sizeof(service), "%hu", port);
+ if(getaddrinfo(host, service, &hints, &results))
+ /* FIXME: use gai_strerror, and fill in error connection */
+ return -1;
+
+ for(addr = results; addr; addr = addr->ai_next)
+ {
+ fd = _xcb_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);
+ if(fd >= 0) {
+ int on = 1;
+ setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
+ setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on));
+
+ if (connect(fd, addr->ai_addr, addr->ai_addrlen) >= 0)
+ break;
+ close(fd);
+ fd = -1;
+ }
+ }
+ freeaddrinfo(results);
+ return fd;
+}
+
+#ifndef _WIN32
+static int _xcb_open_unix(char *protocol, const char *file)
+{
+ int fd;
+ struct sockaddr_un addr;
+
+ if (protocol && strcmp("unix",protocol))
+ return -1;
+
+ strcpy(addr.sun_path, file);
+ addr.sun_family = AF_UNIX;
+#ifdef HAVE_SOCKADDR_SUN_LEN
+ addr.sun_len = SUN_LEN(&addr);
+#endif
+ fd = _xcb_socket(AF_UNIX, SOCK_STREAM, 0);
+ if(fd == -1)
+ return -1;
+ if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1) {
+ close(fd);
+ return -1;
+ }
+ return fd;
+}
+#endif /* !_WIN32 */
+
+#ifdef HAVE_ABSTRACT_SOCKETS
+static int _xcb_open_abstract(char *protocol, const char *file, size_t filelen)
+{
+ int fd;
+ struct sockaddr_un addr = {0};
+ socklen_t namelen;
+
+ if (protocol && strcmp("unix",protocol))
+ return -1;
+
+ strcpy(addr.sun_path + 1, file);
+ addr.sun_family = AF_UNIX;
+ namelen = offsetof(struct sockaddr_un, sun_path) + 1 + filelen;
+#ifdef HAVE_SOCKADDR_SUN_LEN
+ addr.sun_len = 1 + filelen;
+#endif
+ fd = _xcb_socket(AF_UNIX, SOCK_STREAM, 0);
+ if (fd == -1)
+ return -1;
+ if (connect(fd, (struct sockaddr *) &addr, namelen) == -1) {
+ close(fd);
+ return -1;
+ }
+ return fd;
+}
+#endif
+
+xcb_connection_t *xcb_connect(const char *displayname, int *screenp)
+{
+ return xcb_connect_to_display_with_auth_info(displayname, NULL, screenp);
+}
+
+xcb_connection_t *xcb_connect_to_display_with_auth_info(const char *displayname, xcb_auth_info_t *auth, int *screenp)
+{
+ int fd, display = 0;
+ char *host = NULL;
+ char *protocol = NULL;
+ xcb_auth_info_t ourauth;
+ xcb_connection_t *c;
+
+ int parsed = _xcb_parse_display(displayname, &host, &protocol, &display, screenp);
+
+ if(!parsed) {
+ c = (xcb_connection_t *) &error_connection;
+ goto out;
+ } else
+ fd = _xcb_open(host, protocol, display);
+
+ if(fd == -1) {
+ c = (xcb_connection_t *) &error_connection;
+ goto out;
+ }
+
+ if(auth) {
+ c = xcb_connect_to_fd(fd, auth);
+ goto out;
+ }
+
+ if(_xcb_get_auth_info(fd, &ourauth, display))
+ {
+ c = xcb_connect_to_fd(fd, &ourauth);
+ free(ourauth.name);
+ free(ourauth.data);
+ }
+ else
+ c = xcb_connect_to_fd(fd, 0);
+
+out:
+ free(host);
+ free(protocol);
+ return c;
+}