wpipc: place sockets in the same runtime directory as pipewire

Signed-off-by: George Kiagiadakis <george.kiagiadakis@collabora.com>

4 files changed, 55 insertions, 10 deletions

diff --git a/lib/private.h b/lib/private.h
index 55d87a3..06f601a 100644
--- a/lib/private.h
+++ b/lib/private.h
@@ -48,6 +48,11 @@ icipc_log (enum icipc_log_level level,
            const char *fmt,
            ...) __attribute__ ((format (printf, 2, 3)));
 
+/* socket path */
+
+int
+icipc_construct_socket_path (const char *name, char *buf, size_t buf_size);
+
 /* socket */
 
 ssize_t
diff --git a/lib/receiver.c b/lib/receiver.c
index 4592916..b58e8be 100644
--- a/lib/receiver.c
+++ b/lib/receiver.c
@@ -107,14 +107,12 @@ icipc_receiver_new (const char *path,
                     size_t user_size)
 {
   struct icipc_receiver *self;
-  int name_size;
+  int res;
 
   /* check params */
   if (path == NULL || buffer_size == 0)
     return NULL;
 
-  unlink (path);
-
   self = calloc (1, sizeof (struct icipc_receiver) + user_size);
   if (self == NULL)
     return NULL;
@@ -123,11 +121,12 @@ icipc_receiver_new (const char *path,
 
   /* set address */
   self->addr.sun_family = AF_LOCAL;
-  name_size = snprintf(self->addr.sun_path, sizeof(self->addr.sun_path), "%s",
-      path) + 1;
-  if (name_size > (int) sizeof(self->addr.sun_path))
+  res = icipc_construct_socket_path (path, self->addr.sun_path, sizeof(self->addr.sun_path));
+  if (res < 0)
     goto error;
 
+  unlink (self->addr.sun_path);
+
   /* create socket */
   self->socket_fd =
       socket(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0);
diff --git a/lib/sender.c b/lib/sender.c
index 7b5b0c9..7d2cd04 100644
--- a/lib/sender.c
+++ b/lib/sender.c
@@ -118,7 +118,7 @@ icipc_sender_new (const char *path,
                   size_t user_size)
 {
   struct icipc_sender *self;
-  int name_size;
+  int res;
 
   if (path == NULL)
     return NULL;
@@ -131,9 +131,8 @@ icipc_sender_new (const char *path,
 
   /* set address */
   self->addr.sun_family = AF_LOCAL;
-  name_size = snprintf(self->addr.sun_path, sizeof(self->addr.sun_path), "%s",
-      path) + 1;
-  if (name_size > (int) sizeof(self->addr.sun_path))
+  res = icipc_construct_socket_path (path, self->addr.sun_path, sizeof(self->addr.sun_path));
+  if (res < 0)
     goto error;
 
   /* create socket */
diff --git a/lib/utils.c b/lib/utils.c
index 7c683d1..6390ec5 100644
--- a/lib/utils.c
+++ b/lib/utils.c
@@ -18,6 +18,7 @@
 #include <time.h>
 #include <errno.h>
 #include <assert.h>
+#include <pwd.h>
 
 #include "private.h"
 
@@ -89,6 +90,47 @@ icipc_log (enum icipc_log_level level, const char *fmt, ...)
   va_end (args);
 }
 
+/* socket path */
+
+int
+icipc_construct_socket_path (const char *name, char *buf, size_t buf_size)
+{
+  bool path_is_absolute;
+  const char *runtime_dir = NULL;
+  struct passwd pwd, *result = NULL;
+  char buffer[4096];
+  int name_size;
+
+  path_is_absolute = name[0] == '/';
+
+  if (!path_is_absolute) {
+    runtime_dir = getenv("PIPEWIRE_RUNTIME_DIR");
+    if (runtime_dir == NULL)
+      runtime_dir = getenv("XDG_RUNTIME_DIR");
+    if (runtime_dir == NULL)
+      runtime_dir = getenv("HOME");
+    if (runtime_dir == NULL)
+      runtime_dir = getenv("USERPROFILE");
+    if (runtime_dir == NULL) {
+      if (getpwuid_r(getuid(), &pwd, buffer, sizeof(buffer), &result) == 0)
+        runtime_dir = result ? result->pw_dir : NULL;
+    }
+  }
+
+  if (runtime_dir == NULL && !path_is_absolute)
+    return -ENOENT;
+
+  if (path_is_absolute)
+    name_size = snprintf (buf, buf_size, "%s", name) + 1;
+  else
+    name_size = snprintf (buf, buf_size, "%s/%s", runtime_dir, name) + 1;
+
+  if (name_size > (int) buf_size)
+    return -ENAMETOOLONG;
+
+  return 0;
+}
+
 /* socket */
 
 ssize_t