X-Git-Url: http://git.demorecorder.com/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fxcb_util.c;h=ba0f10867d8b1c6659e967460bba2a0700380097;hb=c3cfa04b09ff042fed731b17dac3e40de1a10187;hp=1848abc993dfaafad82fed663c52ce2ce6c13deb;hpb=bce72f63d2dfb61661f81e305ad3a7db0334403c;p=free-sw%2Fxcb%2Flibxcb

diff --git a/src/xcb_util.c b/src/xcb_util.c
index 1848abc..ba0f108 100644
--- a/src/xcb_util.c
+++ b/src/xcb_util.c
@@ -25,12 +25,13 @@
 
 /* Utility functions implementable using only public APIs. */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <assert.h>
 #include <sys/types.h>
-#ifdef DNETCONN
-#include <netdnet/dnetdb.h>
-#include <netdnet/dn.h>
-#endif
+#include <limits.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -39,11 +40,14 @@
 #include <string.h>
 
 #ifdef _WIN32
-#include "windefs.h"
+#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 */
 
@@ -51,7 +55,14 @@
 #include "xcbext.h"
 #include "xcbint.h"
 
-static const int error_connection = 1;
+#if defined(HAVE_TSOL_LABEL_H) && defined(HAVE_IS_SYSTEM_LABELED)
+# include <tsol/label.h>
+# include <sys/stat.h>
+#endif
+
+#ifdef HAVE_LAUNCHD
+#include <sys/stat.h>
+#endif
 
 int xcb_popcount(uint32_t mask)
 {
@@ -61,16 +72,88 @@ int xcb_popcount(uint32_t mask)
     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;
+}
+
+#ifdef HAVE_LAUNCHD
+/* Return true and parse if name matches <path to socket>[.<screen>]
+ * Upon success:
+ *     host = <path to socket>
+ *     protocol = "unix"
+ *     display = 0
+ *     screen = <screen>
+ */
+static int _xcb_parse_display_path_to_socket(const char *name, char **host, char **protocol,
+                                             int *displayp, int *screenp)
+{
+    struct stat sbuf;
+    char path[PATH_MAX];
+    int _screen = 0;
+
+    strlcpy(path, name, sizeof(path));
+    if (0 != stat(path, &sbuf)) {
+        char *dot = strrchr(path, '.');
+        if (!dot)
+            return 0;
+        *dot = '\0';
+
+        if (0 != stat(path, &sbuf))
+            return 0;
+
+        _screen = atoi(dot + 1);
+    }
+
+    if (host) {
+        *host = strdup(path);
+        if (!*host)
+            return 0;
+    }
+
+    if (protocol) {
+        *protocol = strdup("unix");
+        if (!*protocol) {
+            if (host)
+                free(*host);
+            return 0;
+        }
+    }
+
+    if (displayp)
+        *displayp = 0;
+
+    if (screenp)
+        *screenp = _screen;
+
+    return 1;
+}
+#endif
+
 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
+    /* First check for <path to socket>[.<screen>] */
+    if (_xcb_parse_display_path_to_socket(name, host, protocol, displayp, screenp))
+        return 1;
+#endif
+
     slash = strrchr(name, '/');
+
     if (slash) {
         len = slash - name;
         if (protocol) {
@@ -87,35 +170,43 @@ static int _xcb_parse_display(const char *name, char **host, char **protocol,
 
     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,
@@ -124,64 +215,96 @@ int xcb_parse_display(const char *name, char **host, int *displayp,
     return _xcb_parse_display(name, host, NULL, displayp, screenp);
 }
 
-static int _xcb_open_tcp(char *host, char *protocol, const unsigned short port);
+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(char *host, char *protocol, const int display)
+static int _xcb_open(const char *host, char *protocol, const int display)
 {
-#ifdef HAVE_ABSTRACT_SOCKETS
     int fd;
+#ifdef __hpux
+    static const char unix_base[] = "/usr/spool/sockets/X11/";
+#else
+    static const char unix_base[] = "/tmp/.X11-unix/X";
 #endif
-    static const char base[] = "/tmp/.X11-unix/X";
-    char file[sizeof(base) + 20];
-    int filelen;
+    const char *base = unix_base;
+    size_t filelen;
+    char *file = NULL;
+    int actual_filelen;
+
+    /* 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;
+        return _xcb_open_tcp(host, protocol, port);
+    }
 
-    if(*host)
+#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())
     {
-#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
+        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
-            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);
-            }
+#ifdef HAVE_LAUNCHD
+    struct stat sbuf;
+    if (0 == stat(host, &sbuf)) {
+        file = strdup(host);
+        filelen = actual_filelen = strlen(file);
+    } else
+#endif
+    {
+        filelen = strlen(base) + 1 + sizeof(display) * 3 + 1;
+        file = malloc(filelen);
+        if(file == NULL)
+            return -1;
+
+        /* display specifies Unix socket */
+        actual_filelen = snprintf(file, filelen, "%s%d", base, display);
     }
-#ifndef _WIN32
-    /* display specifies Unix socket */
-    filelen = snprintf(file, sizeof(file), "%s%d", base, display);
-    if(filelen < 0)
+
+    if(actual_filelen < 0)
+    {
+        free(file);
         return -1;
+    }
     /* snprintf may truncate the file */
-    filelen = MIN(filelen, sizeof(file) - 1);
+    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
-    return  _xcb_open_unix(protocol, file);
+    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 */
 }
 
 static int _xcb_socket(int family, int type, int proto)
@@ -193,70 +316,50 @@ static int _xcb_socket(int family, int type, int proto)
     if (fd == -1 && errno == EINVAL)
 #endif
     {
-	fd = socket(family, type, proto);
+        fd = socket(family, type, proto);
 #ifndef _WIN32
-	if (fd >= 0)
-	    fcntl(fd, F_SETFD, FD_CLOEXEC);
+        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);
+static int _xcb_do_connect(int fd, const struct sockaddr* addr, int addrlen) {
+    int on = 1;
 
-    addr.sdn_objnamel = sprintf((char *)addr.sdn_objname, "X$X%d", port);
-    if(addr.sdn_objnamel < 0)
+    if(fd < 0)
         return -1;
-    addr.sdn_objnum = 0;
 
-    fd = _xcb_socket(PF_DECnet, SOCK_STREAM, 0);
-    if(fd == -1)
-        return -1;
+    setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
+    setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on));
 
-    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;
+    return connect(fd, addr, addrlen);
 }
-#endif
 
-static int _xcb_open_tcp(char *host, char *protocol, const unsigned short port)
+static int _xcb_open_tcp(const char *host, char *protocol, const unsigned short port)
 {
     int fd = -1;
+#if HAVE_GETADDRINFO
     struct addrinfo hints;
     char service[6]; /* "65535" with the trailing '\0' */
     struct addrinfo *results, *addr;
     char *bracket;
+#endif
 
-    if (protocol && strcmp("tcp",protocol))
+    if (protocol && strcmp("tcp",protocol) && strcmp("inet",protocol)
+#ifdef AF_INET6
+                 && strcmp("inet6",protocol)
+#endif
+        )
         return -1;
 
+    if (*host == '\0')
+        host = "localhost";
+
+#if HAVE_GETADDRINFO
     memset(&hints, 0, sizeof(hints));
-#ifdef AI_ADDRCONFIG
-    hints.ai_flags |= AI_ADDRCONFIG;
-#endif
 #ifdef AI_NUMERICSERV
     hints.ai_flags |= AI_NUMERICSERV;
 #endif
@@ -282,19 +385,42 @@ static int _xcb_open_tcp(char *host, char *protocol, const unsigned short port)
     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 (_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;
+
+        if((_h = gethostbyname(host)) == NULL)
+            return -1;
 
-            if (connect(fd, addr->ai_addr, addr->ai_addrlen) >= 0)
+        _c = (struct in_addr**)_h->h_addr_list;
+        fd = -1;
+
+        while(*_c) {
+            _s.sin_family = AF_INET;
+            _s.sin_port = htons(port);
+            _s.sin_addr = *(*_c);
+
+            fd = _xcb_socket(_s.sin_family, SOCK_STREAM, 0);
+            if(_xcb_do_connect(fd, (struct sockaddr*)&_s, sizeof(_s)) >= 0)
                 break;
+
             close(fd);
             fd = -1;
+            ++_c;
         }
+
+        return fd;
     }
-    freeaddrinfo(results);
-    return fd;
+#endif
 }
 
 #ifndef _WIN32
@@ -357,31 +483,40 @@ xcb_connection_t *xcb_connect(const char *displayname, int *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;
-    char *protocol;
+    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);
-    
-#ifdef HAVE_LAUNCHD
-    if(!displayname)
-        displayname = getenv("DISPLAY");
-    if(displayname && strlen(displayname)>11 && !strncmp(displayname, "/tmp/launch", 11))
-        fd = _xcb_open_unix(NULL, displayname);
-    else
+
+    if(!parsed) {
+        c = _xcb_conn_ret_error(XCB_CONN_CLOSED_PARSE_ERR);
+        goto out;
+    }
+
+#ifdef _WIN32
+    WSADATA wsaData;
+    if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
+        c = _xcb_conn_ret_error(XCB_CONN_ERROR);
+        goto out;
+    }
 #endif
-    if(!parsed)
-        return (xcb_connection_t *) &error_connection;
-    else
-        fd = _xcb_open(host, protocol, display);
-    free(host);
 
-    if(fd == -1)
-        return (xcb_connection_t *) &error_connection;
+    fd = _xcb_open(host, protocol, display);
 
-    if(auth)
-        return xcb_connect_to_fd(fd, auth);
+    if(fd == -1) {
+        c = _xcb_conn_ret_error(XCB_CONN_ERROR);
+#ifdef _WIN32
+        WSACleanup();
+#endif
+        goto out;
+    }
+
+    if(auth) {
+        c = xcb_connect_to_fd(fd, auth);
+        goto out;
+    }
 
     if(_xcb_get_auth_info(fd, &ourauth, display))
     {
@@ -392,5 +527,18 @@ xcb_connection_t *xcb_connect_to_display_with_auth_info(const char *displayname,
     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;
+    }
+
+out:
+    free(host);
+    free(protocol);
     return c;
 }