Adding upstream version 14.2.upstream/14.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 338 insertions, 0 deletions

diff --git a/src/pulsecore/socket-util.c b/src/pulsecore/socket-util.c
new file mode 100644
index 0000000..e389ef2
--- /dev/null
+++ b/src/pulsecore/socket-util.c
@@ -0,0 +1,338 @@
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2004-2006 Lennart Poettering
+  Copyright 2004 Joe Marcus Clarke
+  Copyright 2006-2007 Pierre Ossman <ossman@cendio.se> for Cendio AB
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2.1 of the License,
+  or (at your option) any later version.
+
+  PulseAudio 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 Lesser General Public License
+  along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <signal.h>
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_NETINET_IN_SYSTM_H
+#include <netinet/in_systm.h>
+#endif
+#ifdef HAVE_NETINET_IP_H
+#include <netinet/ip.h>
+#endif
+#ifdef HAVE_NETINET_TCP_H
+#include <netinet/tcp.h>
+#endif
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+#ifdef HAVE_SYSTEMD_DAEMON
+#include <systemd/sd-daemon.h>
+#endif
+
+#include <pulsecore/core-error.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/log.h>
+#include <pulsecore/macro.h>
+#include <pulsecore/socket.h>
+#include <pulsecore/arpa-inet.h>
+
+#include "socket-util.h"
+
+void pa_socket_peer_to_string(int fd, char *c, size_t l) {
+#ifndef OS_IS_WIN32
+    struct stat st;
+#endif
+
+    pa_assert(fd >= 0);
+    pa_assert(c);
+    pa_assert(l > 0);
+
+#ifndef OS_IS_WIN32
+    pa_assert_se(fstat(fd, &st) == 0);
+
+    if (S_ISSOCK(st.st_mode))
+#endif
+    {
+        union {
+            struct sockaddr_storage storage;
+            struct sockaddr sa;
+            struct sockaddr_in in;
+#ifdef HAVE_IPV6
+            struct sockaddr_in6 in6;
+#endif
+#ifdef HAVE_SYS_UN_H
+            struct sockaddr_un un;
+#endif
+        } 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);
+
+                pa_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;
+#ifdef HAVE_IPV6
+            } else if (sa.sa.sa_family == AF_INET6) {
+                char buf[INET6_ADDRSTRLEN];
+                const char *res;
+
+                res = inet_ntop(AF_INET6, &sa.in6.sin6_addr, buf, sizeof(buf));
+                if (res) {
+                    pa_snprintf(c, l, "TCP/IP client from [%s]:%u", buf, ntohs(sa.in6.sin6_port));
+                    return;
+                }
+#endif
+#ifdef HAVE_SYS_UN_H
+            } else if (sa.sa.sa_family == AF_UNIX) {
+                pa_snprintf(c, l, "UNIX socket client");
+                return;
+#endif
+            }
+        }
+
+        pa_snprintf(c, l, "Unknown network client");
+        return;
+    }
+#ifndef OS_IS_WIN32
+    else if (S_ISCHR(st.st_mode) && (fd == 0 || fd == 1)) {
+        pa_snprintf(c, l, "STDIN/STDOUT client");
+        return;
+    }
+#endif /* OS_IS_WIN32 */
+
+    pa_snprintf(c, l, "Unknown client");
+}
+
+void pa_make_socket_low_delay(int fd) {
+
+#ifdef SO_PRIORITY
+    int priority;
+    pa_assert(fd >= 0);
+
+    priority = 6;
+    if (setsockopt(fd, SOL_SOCKET, SO_PRIORITY, (const void *) &priority, sizeof(priority)) < 0)
+        pa_log_warn("SO_PRIORITY failed: %s", pa_cstrerror(errno));
+#endif
+}
+
+void pa_make_tcp_socket_low_delay(int fd) {
+    pa_assert(fd >= 0);
+
+    pa_make_socket_low_delay(fd);
+
+#if defined(SOL_TCP) || defined(IPPROTO_TCP)
+    {
+        int on = 1;
+#if defined(SOL_TCP)
+        if (setsockopt(fd, SOL_TCP, TCP_NODELAY, (const void *) &on, sizeof(on)) < 0)
+#else
+        if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (const void *) &on, sizeof(on)) < 0)
+#endif
+            pa_log_warn("TCP_NODELAY failed: %s", pa_cstrerror(errno));
+    }
+#endif
+
+#if defined(IPTOS_LOWDELAY) && defined(IP_TOS) && (defined(SOL_IP) || defined(IPPROTO_IP))
+    {
+        int tos = IPTOS_LOWDELAY;
+#ifdef SOL_IP
+        if (setsockopt(fd, SOL_IP, IP_TOS, (const void *) &tos, sizeof(tos)) < 0)
+#else
+        if (setsockopt(fd, IPPROTO_IP, IP_TOS, (const void *) &tos, sizeof(tos)) < 0)
+#endif
+            pa_log_warn("IP_TOS failed: %s", pa_cstrerror(errno));
+    }
+#endif
+}
+
+void pa_make_udp_socket_low_delay(int fd) {
+    pa_assert(fd >= 0);
+
+    pa_make_socket_low_delay(fd);
+
+#if defined(IPTOS_LOWDELAY) && defined(IP_TOS) && (defined(SOL_IP) || defined(IPPROTO_IP))
+    {
+        int tos = IPTOS_LOWDELAY;
+#ifdef SOL_IP
+        if (setsockopt(fd, SOL_IP, IP_TOS, (const void *) &tos, sizeof(tos)) < 0)
+#else
+        if (setsockopt(fd, IPPROTO_IP, IP_TOS, (const void *) &tos, sizeof(tos)) < 0)
+#endif
+            pa_log_warn("IP_TOS failed: %s", pa_cstrerror(errno));
+    }
+#endif
+}
+
+int pa_socket_set_rcvbuf(int fd, size_t l) {
+    int bufsz = (int) l;
+
+    pa_assert(fd >= 0);
+
+    if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (const void *) &bufsz, sizeof(bufsz)) < 0) {
+        pa_log_warn("SO_RCVBUF: %s", pa_cstrerror(errno));
+        return -1;
+    }
+
+    return 0;
+}
+
+int pa_socket_set_sndbuf(int fd, size_t l) {
+    int bufsz = (int) l;
+
+    pa_assert(fd >= 0);
+
+    if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (const void *) &bufsz, sizeof(bufsz)) < 0) {
+        pa_log_warn("SO_SNDBUF: %s", pa_cstrerror(errno));
+        return -1;
+    }
+
+    return 0;
+}
+
+#ifdef HAVE_SYS_UN_H
+
+int pa_unix_socket_is_stale(const char *fn) {
+    struct sockaddr_un sa;
+    int fd = -1, ret = -1;
+
+    pa_assert(fn);
+
+    if ((fd = pa_socket_cloexec(PF_UNIX, SOCK_STREAM, 0)) < 0) {
+        pa_log("socket(): %s", pa_cstrerror(errno));
+        goto finish;
+    }
+
+    sa.sun_family = AF_UNIX;
+    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)
+        pa_close(fd);
+
+    return ret;
+}
+
+int pa_unix_socket_remove_stale(const char *fn) {
+    int r;
+
+    pa_assert(fn);
+
+#ifdef HAVE_SYSTEMD_DAEMON
+    {
+        int n = sd_listen_fds(0);
+        if (n > 0) {
+            for (int i = 0; i < n; ++i) {
+                if (sd_is_socket_unix(SD_LISTEN_FDS_START + i, SOCK_STREAM, 1, fn, 0) > 0) {
+                    /* This is a socket activated socket, therefore do not consider
+                    * it stale. */
+                    return 0;
+                }
+            }
+        }
+    }
+#endif
+
+    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;
+}
+
+#else /* HAVE_SYS_UN_H */
+
+int pa_unix_socket_is_stale(const char *fn) {
+    return -1;
+}
+
+int pa_unix_socket_remove_stale(const char *fn) {
+    return -1;
+}
+
+#endif /* HAVE_SYS_UN_H */
+
+bool pa_socket_address_is_local(const struct sockaddr *sa) {
+    pa_assert(sa);
+
+    switch (sa->sa_family) {
+        case AF_UNIX:
+            return true;
+
+        case AF_INET:
+            return ((const struct sockaddr_in*) sa)->sin_addr.s_addr == INADDR_LOOPBACK;
+
+#ifdef HAVE_IPV6
+        case AF_INET6:
+            return memcmp(&((const struct sockaddr_in6*) sa)->sin6_addr, &in6addr_loopback, sizeof(struct in6_addr)) == 0;
+#endif
+
+        default:
+            return false;
+    }
+}
+
+bool pa_socket_is_local(int fd) {
+
+    union {
+        struct sockaddr_storage storage;
+        struct sockaddr sa;
+        struct sockaddr_in in;
+#ifdef HAVE_IPV6
+        struct sockaddr_in6 in6;
+#endif
+#ifdef HAVE_SYS_UN_H
+        struct sockaddr_un un;
+#endif
+    } sa;
+    socklen_t sa_len = sizeof(sa);
+
+    if (getpeername(fd, &sa.sa, &sa_len) < 0)
+        return false;
+
+    return pa_socket_address_is_local(&sa.sa);
+}