gistfile1.txt

#include <pipewire/pipewire.h>
#include <pthread.h>
#include <dlfcn.h>

static pthread_once_t lib_once = PTHREAD_ONCE_INIT; 
static void *pw_lib = NULL;
static void load_pw_lib(void)
{
    pw_lib = dlopen("/usr/lib/libpipewire-0.3.so", RTLD_NOW);
}

static void *load_pw_func(const char *name)
{
    pthread_once(&lib_once, load_pw_lib);
    return dlsym(pw_lib, name);
}

static pthread_once_t pfn_pw_context_connect_once = PTHREAD_ONCE_INIT; 
static typeof(pw_context_connect)* pfn_pw_context_connect;
static void load_pw_context_connect(void) { pfn_pw_context_connect = (typeof(pfn_pw_context_connect)) load_pw_func("pw_context_connect"); }

struct pw_core *pw_context_connect(struct pw_context *context,
                                   struct pw_properties *properties,
                                   size_t user_data_size)
{
    struct pw_permission permissions[] =
    {
        { PW_ID_CORE, PW_PERM_RWX },
        { 65, PW_PERM_RWX },
        { 69, PW_PERM_RWX },
        { 70, PW_PERM_RWX },
        { 71, PW_PERM_RWX },
        { 72, PW_PERM_RWX },
        { 73, PW_PERM_RWX },
        { 74, PW_PERM_RWX },
        { 75, PW_PERM_RWX },
        { 76, PW_PERM_RWX },
        { 77, PW_PERM_RWX },
        { PW_ID_ANY, PW_PERM_R },
    };

    pthread_once(&pfn_pw_context_connect_once, load_pw_context_connect);
    fprintf(stderr, "[pw-namespace] Hooking pw_context_connect\n");
    struct pw_core *core = (*pfn_pw_context_connect)(context, properties, user_data_size);
    if (!core)
        return NULL;

    pw_client_update_permissions(
        pw_core_get_client(core),
        12,
        permissions);

    return core;
}