X-Git-Url: http://git.demorecorder.com/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fxcb_util.c;h=58bd12dd26f38f9502ca5a0925b55f051c650765;hb=8c2707773b3621fb8bbda9021d23944f5be34aab;hp=c9c7f9228aa1dac78d5ea640cde63384c6a31a9e;hpb=3f8d0bd5322749132626e8f203017b6da6448fd0;p=free-sw%2Fxcb%2Flibxcb

diff --git a/src/xcb_util.c b/src/xcb_util.c
index c9c7f92..58bd12d 100644
--- a/src/xcb_util.c
+++ b/src/xcb_util.c
@@ -26,37 +26,80 @@
 /* Utility functions implementable using only public APIs. */
 
 #include <assert.h>
-#include <sys/select.h>
+#include <sys/types.h>
 #include <sys/socket.h>
-#include <sys/fcntl.h>
+#include <limits.h>
 #include <sys/un.h>
 #include <netinet/in.h>
+#include <netinet/tcp.h>
+#ifdef DNETCONN
+#include <netdnet/dnetdb.h>
+#include <netdnet/dn.h>
+#endif
 #include <netdb.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <stddef.h>
 #include <unistd.h>
+#include <fcntl.h>
 #include <string.h>
 
 #include "xcb.h"
 #include "xcbext.h"
+#include "xcbint.h"
+
+static const int error_connection = 1;
 
-int XCBPopcount(CARD32 mask)
+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;
@@ -90,150 +133,299 @@ int XCBParseDisplay(const char *name, char **host, int *displayp, int *screenp)
     return 1;
 }
 
-int XCBOpen(const char *host, const int display)
+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);
+static int _xcb_open_unix(char *protocol, const char *file);
+#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)
+    if(*host || protocol)
     {
-        /* display specifies TCP */
-        unsigned short port = X_TCP_PORT + display;
-        fd = XCBOpenTCP(host, port);
+#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);
+            }
     }
+
+    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))
     {
-        /* 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 fd;
     }
 
+#endif
+    fd = _xcb_open_unix(protocol, file);
+    free(file);
+
     return fd;
 }
 
-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)
+
+#ifdef SOCK_CLOEXEC
+    fd = socket(family, type | SOCK_CLOEXEC, proto);
+    if (fd == -1 && errno == EINVAL)
+#endif
+    {
+	fd = socket(family, type, proto);
+	if (fd >= 0)
+	    fcntl(fd, F_SETFD, FD_CLOEXEC);
+    }
+    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.sin_family = AF_INET;
-    addr.sin_port = htons(port);
-    memcpy(&addr.sin_addr, hostaddr->h_addr_list[0], sizeof(addr.sin_addr));
+    addr.sdn_objnum = 0;
 
-    fd = socket(PF_INET, SOCK_STREAM, 0);
+    fd = _xcb_socket(PF_DECnet, SOCK_STREAM, 0);
     if(fd == -1)
         return -1;
-    if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -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
 
-int XCBOpenUnix(const char *file)
+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;
+    struct addrinfo hints;
+    char service[6]; /* "65535" with the trailing '\0' */
+    struct addrinfo *results, *addr;
+    char *bracket;
 
-    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";
+
+    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;
 }
 
-XCBConnection *XCBConnect(const char *displayname, int *screenp)
+static int _xcb_open_unix(char *protocol, const char *file)
 {
-    int fd, display = 0;
-    char *host;
-    XCBConnection *c;
-    XCBAuthInfo auth;
+    int fd;
+    struct sockaddr_un addr;
 
-    if(!XCBParseDisplay(displayname, &host, &display, screenp))
-        return 0;
-    fd = XCBOpen(host, display);
-    free(host);
-    if(fd == -1)
-        return 0;
+    if (protocol && strcmp("unix",protocol))
+        return -1;
 
-    XCBGetAuthInfo(fd, &auth);
-    c = XCBConnectToFD(fd, &auth);
-    free(auth.name);
-    free(auth.data);
-    return c;
+    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;
 }
 
-XCBConnection *XCBConnectToDisplayWithAuthInfo(const char *displayname, XCBAuthInfo *auth, int *screenp)
+#ifdef HAVE_ABSTRACT_SOCKETS
+static int _xcb_open_abstract(char *protocol, const char *file, size_t filelen)
 {
-    int fd, display = 0;
-    char *host;
+    int fd;
+    struct sockaddr_un addr = {0};
+    socklen_t namelen;
 
-    if(!XCBParseDisplay(displayname, &host, &display, screenp))
-        return 0;
-    fd = XCBOpen(host, display);
-    free(host);
-    if(fd == -1)
-        return 0;
+    if (protocol && strcmp("unix",protocol))
+        return -1;
 
-    return XCBConnectToFD(fd, auth);
+    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
 
-/* backwards compatible interface: remove before 1.0 release */
-XCBConnection *XCBConnectBasic()
+xcb_connection_t *xcb_connect(const char *displayname, int *screenp)
 {
-    XCBConnection *c = XCBConnect(0, 0);
-    if(c)
-        return c;
-    perror("XCBConnect");
-    abort();
+    return xcb_connect_to_display_with_auth_info(displayname, NULL, screenp);
 }
 
-int XCBSync(XCBConnection *c, XCBGenericError **e)
+xcb_connection_t *xcb_connect_to_display_with_auth_info(const char *displayname, xcb_auth_info_t *auth, int *screenp)
 {
-    XCBGetInputFocusRep *reply = XCBGetInputFocusReply(c, XCBGetInputFocus(c), e);
-    free(reply);
-    return reply != 0;
-}
+    int fd, display = 0;
+    char *host;
+    char *protocol;
+    xcb_auth_info_t ourauth;
+    xcb_connection_t *c;
 
-/* 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. */
+    int parsed = _xcb_parse_display(displayname, &host, &protocol, &display, screenp);
+    
+    if(!parsed)
+        return (xcb_connection_t *) &error_connection;
+    else
+        fd = _xcb_open(host, protocol, display);
+    free(host);
 
-#include "xcbint.h"
+    if(fd == -1)
+        return (xcb_connection_t *) &error_connection;
 
-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;
-}
+    if(auth)
+        return xcb_connect_to_fd(fd, auth);
 
-int _xcb_read_block(const int fd, void *buf, const size_t len)
-{
-    int done = 0;
-    while(done < len)
+    if(_xcb_get_auth_info(fd, &ourauth, display))
     {
-        int ret = read(fd, ((char *) buf) + done, len - done);
-        if(ret > 0)
-            done += ret;
-        if(ret < 0 && errno == EAGAIN)
-        {
-            fd_set fds;
-            FD_ZERO(&fds);
-            FD_SET(fd, &fds);
-            ret = select(fd + 1, &fds, 0, 0, 0);
-        }
-        if(ret <= 0)
-            return ret;
+        c = xcb_connect_to_fd(fd, &ourauth);
+        free(ourauth.name);
+        free(ourauth.data);
     }
-    return len;
+    else
+        c = xcb_connect_to_fd(fd, 0);
+
+    return c;
 }