X-Git-Url: http://git.demorecorder.com/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fxcb_util.c;h=466dc23bc70ce28ffe4f809df3e7318fbce5f3a7;hb=cca607409068ad0948e7283fb8d0465cabc51686;hp=b25a2d84b83a188f0f1ffb77b93b6cc4cfc3cdbd;hpb=47ceed78612d48dcda62cc2686fc527d61abe38b;p=free-sw%2Fxcb%2Flibxcb

diff --git a/src/xcb_util.c b/src/xcb_util.c
index b25a2d8..466dc23 100644
--- a/src/xcb_util.c
+++ b/src/xcb_util.c
@@ -25,255 +25,464 @@
 
 /* Utility functions implementable using only public APIs. */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <assert.h>
-#include <sys/select.h>
-#include <sys/socket.h>
-#include <sys/fcntl.h>
-#include <sys/un.h>
-#include <netinet/in.h>
-#include <netdb.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 <arpa/inet.h>
+#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"
 
-int XCBPopcount(CARD32 mask)
+#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)
 {
-    unsigned long y;
+    uint32_t y;
     y = (mask >> 1) & 033333333333;
     y = mask - y - ((y >> 1) & 033333333333);
     return ((y + (y >> 3)) & 030707070707) % 077;
 }
 
-int XCBParseDisplay(const char *name, char **host, int *displayp, int *screenp)
+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 *colon, *dot, *end;
+    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)
-        return 0;
+        goto error_out;
     len = colon - name;
     ++colon;
     display = strtoul(colon, &dot, 10);
     if(dot == colon)
-        return 0;
+        goto error_out;
     if(*dot == '\0')
         screen = 0;
     else
     {
         if(*dot != '.')
-            return 0;
+            goto error_out;
         ++dot;
         screen = strtoul(dot, &end, 10);
         if(end == dot || *end != '\0')
-            return 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)
-        return 0;
+        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);
 }
 
-int XCBOpen(const char *host, const int display)
+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;
+#ifdef __hpux
+    static const char unix_base[] = "/usr/spool/sockets/X11/";
+#else
+    static const char unix_base[] = "/tmp/.X11-unix/X";
+#endif
+    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 = "unix";
+    }
+#endif
 
-    if(*host)
+    /* If protocol or host is "unix", fall through to Unix socket code below */
+    if ((!protocol || (strcmp("unix",protocol) != 0)) &&
+        (*host != '\0') && (strcmp("unix",host) != 0))
     {
         /* display specifies TCP */
         unsigned short port = X_TCP_PORT + display;
-        fd = XCBOpenTCP(host, port);
+        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)
     {
-        /* display specifies Unix socket */
-        static const char base[] = "/tmp/.X11-unix/X";
-        char file[sizeof(base) + 20];
-        snprintf(file, sizeof(file), "%s%d", base, display);
-        fd = XCBOpenUnix(file);
+        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);
+
+    if (fd < 0 && !protocol && *host == '\0') {
+	    unsigned short port = X_TCP_PORT + display;
+	    fd = _xcb_open_tcp(host, protocol, port);
     }
 
     return fd;
+#endif /* !_WIN32 */
+    return -1; /* if control reaches here then something has gone wrong */
 }
 
-int XCBOpenTCP(const char *host, const unsigned short port)
+static int _xcb_socket(int family, int type, int proto)
 {
     int fd;
-    struct sockaddr_in addr;
-    struct hostent *hostaddr = gethostbyname(host);
-    if(!hostaddr)
-        return -1;
-    addr.sin_family = AF_INET;
-    addr.sin_port = htons(port);
-    memcpy(&addr.sin_addr, hostaddr->h_addr_list[0], sizeof(addr.sin_addr));
 
-    fd = socket(PF_INET, SOCK_STREAM, 0);
-    if(fd == -1)
-        return -1;
-    if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
-        return -1;
+#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;
 }
 
-int XCBOpenUnix(const char *file)
+
+static int _xcb_do_connect(int fd, const struct sockaddr* addr, int addrlen) {
+	int on = 1;
+
+	if(fd < 0)
+		return -1;
+
+	setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
+	setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on));
+
+	return connect(fd, addr, addrlen);
+}
+
+static int _xcb_open_tcp(const char *host, char *protocol, const unsigned short port)
 {
-    int fd;
-    struct sockaddr_un addr = { AF_UNIX };
-    strcpy(addr.sun_path, file);
+    int fd = -1;
+#if HAVE_GETADDRINFO
+    struct addrinfo hints;
+    char service[6]; /* "65535" with the trailing '\0' */
+    struct addrinfo *results, *addr;
+    char *bracket;
+#endif
 
-    fd = socket(AF_UNIX, SOCK_STREAM, 0);
-    if(fd == -1)
+    if (protocol && strcmp("tcp",protocol) && strcmp("inet",protocol)
+#ifdef AF_INET6
+	         && strcmp("inet6",protocol)
+#endif
+	)
         return -1;
-    if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
+	
+    if (*host == '\0')
+	host = "localhost";
+
+#if HAVE_GETADDRINFO
+    memset(&hints, 0, sizeof(hints));
+#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 (_xcb_do_connect(fd, addr->ai_addr, addr->ai_addrlen) >= 0)
+            break;
+        close(fd);
+        fd = -1;
+    }
+    freeaddrinfo(results);
     return fd;
-}
+#else
+    {
+        struct hostent* _h;
+        struct sockaddr_in _s;
+        struct in_addr ** _c;
 
-XCBConnection *XCBConnect(const char *displayname, int *screenp)
-{
-    int fd, display = 0;
-    char *host;
-    XCBConnection *c;
-    XCBAuthInfo auth;
+        if((_h = gethostbyname(host)) == NULL)
+            return -1;
 
-    if(!XCBParseDisplay(displayname, &host, &display, screenp))
-        return 0;
-    fd = XCBOpen(host, display);
-    free(host);
-    if(fd == -1)
-        return 0;
+        _c = (struct in_addr**)_h->h_addr_list;
+        fd = -1;
 
-    XCBGetAuthInfo(fd, &auth);
-    c = XCBConnectToFD(fd, &auth);
-    free(auth.name);
-    free(auth.data);
-    return c;
-}
+        while(*_c) {
+            _s.sin_family = AF_INET;
+            _s.sin_port = htons(port);
+            _s.sin_addr = *(*_c);
 
-XCBConnection *XCBConnectToDisplayWithAuthInfo(const char *displayname, XCBAuthInfo *auth, int *screenp)
-{
-    int fd, display = 0;
-    char *host;
+            fd = _xcb_socket(_s.sin_family, SOCK_STREAM, 0);
+            if(_xcb_do_connect(fd, (struct sockaddr*)&_s, sizeof(_s)) >= 0)
+                break;
 
-    if(!XCBParseDisplay(displayname, &host, &display, screenp))
-        return 0;
-    fd = XCBOpen(host, display);
-    free(host);
-    if(fd == -1)
-        return 0;
+            close(fd);
+            fd = -1;
+            ++_c;
+        }
 
-    return XCBConnectToFD(fd, auth);
+        return fd;
+    }
+#endif
 }
 
-/* backwards compatible interface: remove before 1.0 release */
-XCBConnection *XCBConnectBasic()
+#ifndef _WIN32
+static int _xcb_open_unix(char *protocol, const char *file)
 {
-    XCBConnection *c = XCBConnect(0, 0);
-    if(c)
-        return c;
-    perror("XCBConnect");
-    abort();
-}
+    int fd;
+    struct sockaddr_un addr;
 
-int XCBSync(XCBConnection *c, XCBGenericError **e)
-{
-    XCBGetInputFocusRep *reply = XCBGetInputFocusReply(c, XCBGetInputFocus(c), e);
-    free(reply);
-    return reply != 0;
+    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 */
 
-/* The functions beyond this point still use only public interfaces,
- * but are not themselves part of the public interface. So their
- * prototypes are in xcbint.h. */
+#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;
 
-#include "xcbint.h"
+    if (protocol && strcmp("unix",protocol))
+        return -1;
 
-int _xcb_set_fd_flags(const int fd)
-{
-    long flags = fcntl(fd, F_GETFL, 0);
-    if(flags == -1)
-        return 0;
-    flags |= O_NONBLOCK;
-    if(fcntl(fd, F_SETFL, flags) == -1)
-        return 0;
-    if(fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)
-        return 0;
-    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
 
-int _xcb_readn(const int fd, void *buf, const int buflen, int *count)
+xcb_connection_t *xcb_connect(const char *displayname, int *screenp)
 {
-    int n = read(fd, ((char *) buf) + *count, buflen - *count);
-    if(n > 0)
-        *count += n;
-    return n;
+    return xcb_connect_to_display_with_auth_info(displayname, NULL, screenp);
 }
 
-int _xcb_read_block(const int fd, void *buf, const size_t len)
+xcb_connection_t *xcb_connect_to_display_with_auth_info(const char *displayname, xcb_auth_info_t *auth, int *screenp)
 {
-    int done = 0;
-    while(done < len)
-    {
-        int ret = _xcb_readn(fd, buf, len, &done);
-        if(ret < 0 && errno == EAGAIN)
-        {
-            fd_set fds;
-            FD_ZERO(&fds);
-            FD_SET(fd, &fds);
-            ret = select(fd + 1, &fds, 0, 0, 0);
+    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_conn_ret_error(XCB_CONN_CLOSED_PARSE_ERR);
+        goto out;
+    } else {
+#ifdef _WIN32
+        WSADATA wsaData;
+        if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
+            c = _xcb_conn_ret_error(XCB_CONN_ERROR);
+            goto out;
         }
-        if(ret <= 0)
-            return ret;
+#endif
+        fd = _xcb_open(host, protocol, display);
     }
-    return len;
-}
 
-int _xcb_write(const int fd, char (*buf)[], int *count)
-{
-    int n = write(fd, *buf, *count);
-    if(n > 0)
-    {
-        *count -= n;
-        if(*count)
-            memmove(*buf, *buf + n, *count);
+    if(fd == -1) {
+        c = _xcb_conn_ret_error(XCB_CONN_ERROR);
+#ifdef _WIN32
+        WSACleanup();
+#endif
+        goto out;
     }
-    return n;
-}
 
-int _xcb_writev(const int fd, struct iovec *vec, int count)
-{
-    int n = writev(fd, vec, count);
-    if(n > 0)
+    if(auth) {
+        c = xcb_connect_to_fd(fd, auth);
+        goto out;
+    }
+
+    if(_xcb_get_auth_info(fd, &ourauth, display))
     {
-        int rem = n;
-        for(; count; --count, ++vec)
-        {
-            int cur = vec->iov_len;
-            if(cur > rem)
-                cur = rem;
-            vec->iov_len -= cur;
-            vec->iov_base = (char *) vec->iov_base + cur;
-            rem -= cur;
-            if(vec->iov_len)
-                break;
-        }
-        assert(rem == 0);
+        c = xcb_connect_to_fd(fd, &ourauth);
+        free(ourauth.name);
+        free(ourauth.data);
+    }
+    else
+        c = xcb_connect_to_fd(fd, 0);
+
+    if(c->has_error)
+        goto out;
+
+    /* Make sure requested screen number is in bounds for this server */
+    if((screenp != NULL) && (*screenp >= (int) c->setup->roots_len)) {
+        xcb_disconnect(c);
+        c = _xcb_conn_ret_error(XCB_CONN_CLOSED_INVALID_SCREEN);
+        goto out;
     }
-    return n;
+
+out:
+    free(host);
+    free(protocol);
+    return c;
 }