rename src to polyp

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@90 fefdeb5f-60dc-0310-8127-8f9354f1896f

polyp/socket-util.c

@@ -0,0 +1,216 @@
+/* $Id$ */
+
+/***
+  This file is part of polypaudio.
+ 
+  polypaudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published
+  by the Free Software Foundation; either version 2 of the License,
+  or (at your option) any later version.
+ 
+  polypaudio is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+ 
+  You should have received a copy of the GNU General Public License
+  along with polypaudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <errno.h>
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <netinet/tcp.h>
+#include <netinet/ip.h>
+
+#include "socket-util.h"
+#include "util.h"
+
+void pa_socket_peer_to_string(int fd, char *c, size_t l) {
+    struct stat st;
+
+    assert(c && l && fd >= 0);
+    
+    if (fstat(fd, &st) < 0) {
+        snprintf(c, l, "Invalid client fd");
+        return;
+    }
+
+    if (S_ISSOCK(st.st_mode)) {
+        union {
+            struct sockaddr sa;
+            struct sockaddr_in in;
+            struct sockaddr_un un;
+        } sa;
+        socklen_t sa_len = sizeof(sa);
+        
+        if (getpeername(fd, &sa.sa, &sa_len) >= 0) {
+
+            if (sa.sa.sa_family == AF_INET) {
+                uint32_t ip = ntohl(sa.in.sin_addr.s_addr);
+                
+                snprintf(c, l, "TCP/IP client from %i.%i.%i.%i:%u",
+                         ip >> 24,
+                         (ip >> 16) & 0xFF,
+                         (ip >> 8) & 0xFF,
+                         ip & 0xFF,
+                         ntohs(sa.in.sin_port));
+                return;
+            } else if (sa.sa.sa_family == AF_LOCAL) {
+                snprintf(c, l, "UNIX socket client");
+                return;
+            }
+
+        }
+        snprintf(c, l, "Unknown network client");
+        return;
+    } else if (S_ISCHR(st.st_mode) && (fd == 0 || fd == 1)) {
+        snprintf(c, l, "STDIN/STDOUT client");
+        return;
+    }
+
+    snprintf(c, l, "Unknown client");
+}
+
+int pa_socket_low_delay(int fd) {
+    int priority;
+    assert(fd >= 0);
+
+    priority = 7;
+    if (setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &priority, sizeof(priority)) < 0)
+        return -1;
+
+    return 0;
+}
+
+int pa_socket_tcp_low_delay(int fd) {
+    int ret, tos;
+
+    assert(fd >= 0);
+
+    ret = pa_socket_low_delay(fd);
+    
+/*     on = 1; */
+/*     if (setsockopt(fd, SOL_TCP, TCP_NODELAY, &on, sizeof(on)) < 0) */
+/*         ret = -1; */
+
+    tos = IPTOS_LOWDELAY;
+    if (setsockopt(fd, SOL_IP, IP_TOS, &tos, sizeof(tos)) < 0)
+        ret = -1;
+
+    return ret;
+
+}
+
+int pa_socket_set_rcvbuf(int fd, size_t l) {
+    assert(fd >= 0);
+
+    if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &l, sizeof(l)) < 0)
+        return -1;
+
+    return 0;
+}
+
+int pa_socket_set_sndbuf(int fd, size_t l) {
+    assert(fd >= 0);
+
+    if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &l, sizeof(l)) < 0)
+        return -1;
+
+    return 0;
+}
+
+int pa_unix_socket_is_stale(const char *fn) {
+    struct sockaddr_un sa;
+    int fd = -1, ret = -1;
+
+    if ((fd = socket(PF_LOCAL, SOCK_STREAM, 0)) < 0) {
+        fprintf(stderr, "socket(): %s\n", strerror(errno));
+        goto finish;
+    }
+
+    sa.sun_family = AF_LOCAL;
+    strncpy(sa.sun_path, fn, sizeof(sa.sun_path)-1);
+    sa.sun_path[sizeof(sa.sun_path) - 1] = 0;
+
+    if (connect(fd, (struct sockaddr*) &sa, sizeof(sa)) < 0) {
+        if (errno == ECONNREFUSED)
+            ret = 1;
+    } else
+        ret = 0;
+
+finish:
+    if (fd >= 0)
+        close(fd);
+
+    return ret;
+}
+
+int pa_unix_socket_remove_stale(const char *fn) {
+    int r;
+    
+    if ((r = pa_unix_socket_is_stale(fn)) < 0)
+        return errno != ENOENT ? -1 : 0;
+
+    if (!r)
+        return 0;
+        
+    /* Yes, here is a race condition. But who cares? */
+    if (unlink(fn) < 0)
+        return -1;
+
+    return 0;
+}
+
+int pa_unix_socket_make_secure_dir(const char *fn) {
+    int ret = -1;
+    char *slash, *dir = strdup(fn);
+    assert(dir);
+    
+    if (!(slash = strrchr(dir, '/')))
+        goto finish;
+    *slash = 0;
+    
+    if (pa_make_secure_dir(dir) < 0)
+        goto finish;
+
+    ret = 0;
+    
+finish:
+    free(dir);
+    return ret;
+}
+
+int pa_unix_socket_remove_secure_dir(const char *fn) {
+    int ret = -1;
+    char *slash, *dir = strdup(fn);
+    assert(dir);
+    
+    if (!(slash = strrchr(dir, '/')))
+        goto finish;
+    *slash = 0;
+
+    if (rmdir(dir) < 0)
+        goto finish;
+    
+    ret = 0;
+    
+finish:
+    free(dir);
+    return ret;
+}