/*
* Copyright © 2008 Kristian Høgsberg
* Copyright © 2013 Jason Ekstrand
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#define _GNU_SOURCE
#include <math.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <sys/uio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <time.h>
#include <ffi.h>
#include "wayland-util.h"
#include "wayland-private.h"
#include "wayland-os.h"
#define DIV_ROUNDUP(n, a) ( ((n) + ((a) - 1)) / (a) )
struct wl_buffer {
char data[4096];
uint32_t head, tail;
};
#define MASK(i) ((i) & 4095)
#define MAX_FDS_OUT 28
#define CLEN (CMSG_LEN(MAX_FDS_OUT * sizeof(int32_t)))
struct wl_connection {
struct wl_buffer in, out;
struct wl_buffer fds_in, fds_out;
int fd;
int want_flush;
};
static int
wl_buffer_put(struct wl_buffer *b, const void *data, size_t count)
{
uint32_t head, size;
if (count > sizeof(b->data)) {
wl_log("Data too big for buffer (%d > %d).\n",
count, sizeof(b->data));
errno = E2BIG;
return -1;
}
head = MASK(b->head);
if (head + count <= sizeof b->data) {
memcpy(b->data + head, data, count);
} else {
size = sizeof b->data - head;
memcpy(b->data + head, data, size);
memcpy(b->data, (const char *) data + size, count - size);
}
b->head += count;
return 0;
}
static void
wl_buffer_put_iov(struct wl_buffer *b, struct iovec *iov, int *count)
{
uint32_t head, tail;
head = MASK(b->head);
tail = MASK(b->tail);
if (head < tail) {
iov[0].iov_base = b->data + head;
iov[0].iov_len = tail - head;
*count = 1;
} else if (tail == 0) {
iov[0].iov_base = b->data + head;
iov[0].iov_len = sizeof b->data - head;
*count = 1;
} else {
iov[0].iov_base = b->data + head;
iov[0].iov_len = sizeof b->data - head;
iov[1].iov_base = b->data;
iov[1].iov_len = tail;
*count = 2;
}
}
static void
wl_buffer_get_iov(struct wl_buffer *b, struct iovec *iov, int *count)
{
uint32_t head, tail;
head = MASK(b->head);
tail = MASK(b->tail);
if (tail < head) {
iov[0].iov_base = b->data + tail;
iov[0].iov_len = head - tail;
*count = 1;
} else if (head == 0) {
iov[0].iov_base = b->data + tail;
iov[0].iov_len = sizeof b->data - tail;
*count = 1;
} else {
iov[0].iov_base = b->data + tail;
iov[0].iov_len = sizeof b->data - tail;
iov[1].iov_base = b->data;
iov[1].iov_len = head;
*count = 2;
}
}
static void
wl_buffer_copy(struct wl_buffer *b, void *data, size_t count)
{
uint32_t tail, size;
tail = MASK(b->tail);
if (tail + count <= sizeof b->data) {
memcpy(data, b->data + tail, count);
} else {
size = sizeof b->data - tail;
memcpy(data, b->data + tail, size);
memcpy((char *) data + size, b->data, count - size);
}
}
static uint32_t
wl_buffer_size(struct wl_buffer *b)
{
return b->head - b->tail;
}
struct wl_connection *
wl_connection_create(int fd)
{
struct wl_connection *connection;
connection = zalloc(sizeof *connection);
if (connection == NULL)
return NULL;
connection->fd = fd;
return connection;
}
static void
close_fds(struct wl_buffer *buffer, int max)
{
int32_t fds[sizeof(buffer->data) / sizeof(int32_t)], i, count;
size_t size;
size = buffer->head - buffer->tail;
if (size == 0)
return;
wl_buffer_copy(buffer, fds, size);
count = size / sizeof fds[0];
if (max > 0 && max < count)
count = max;
for (i = 0; i < count; i++)
close(fds[i]);
buffer->tail += size;
}
int
wl_connection_destroy(struct wl_connection *connection)
{
int fd = connection->fd;
close_fds(&connection->fds_out, -1);
close_fds(&connection->fds_in, -1);
free(connection);
return fd;
}
void
wl_connection_copy(struct wl_connection *connection, void *data, size_t size)
{
wl_buffer_copy(&connection->in, data, size);
}
void
wl_connection_consume(struct wl_connection *connection, size_t size)
{
connection->in.tail += size;
}
static void
build_cmsg(struct wl_buffer *buffer, char *data, int *clen)
{
struct cmsghdr *cmsg;
size_t size;
size = buffer->head - buffer->tail;
if (size > MAX_FDS_OUT * sizeof(int32_t))
size = MAX_FDS_OUT * sizeof(int32_t);
if (size > 0) {
cmsg = (struct cmsghdr *) data;
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
cmsg->cmsg_len = CMSG_LEN(size);
wl_buffer_copy(buffer, CMSG_DATA(cmsg), size);
*clen = cmsg->cmsg_len;
} else {
*clen = 0;
}
}
static int
decode_cmsg(struct wl_buffer *buffer, struct msghdr *msg)
{
struct cmsghdr *cmsg;
size_t size, max, i;
int overflow = 0;
for (cmsg = CMSG_FIRSTHDR(msg); cmsg != NULL;
cmsg = CMSG_NXTHDR(msg, cmsg)) {
if (cmsg->cmsg_level != SOL_SOCKET ||
cmsg->cmsg_type != SCM_RIGHTS)
continue;
size = cmsg->cmsg_len - CMSG_LEN(0);
max = sizeof(buffer->data) - wl_buffer_size(buffer);
if (size > max || overflow) {
overflow = 1;
size /= sizeof(int32_t);
for (i = 0; i < size; i++)
close(((int*)CMSG_DATA(cmsg))[i]);
} else if (wl_buffer_put(buffer, CMSG_DATA(cmsg), size) < 0) {
return -1;
}
}
if (overflow) {
errno = EOVERFLOW;
return -1;
}
return 0;
}
int
wl_connection_flush(struct wl_connection *connection)
{
struct iovec iov[2];
struct msghdr msg;
char cmsg[CLEN];
int len = 0, count, clen;
uint32_t tail;
if (!connection->want_flush)
return 0;
tail = connection->out.tail;
while (connection->out.head - connection->out.tail > 0) {
wl_buffer_get_iov(&connection->out, iov, &count);
build_cmsg(&connection->fds_out, cmsg, &clen);
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_iov = iov;
msg.msg_iovlen = count;
msg.msg_control = (clen > 0) ? cmsg : NULL;
msg.msg_controllen = clen;
msg.msg_flags = 0;
do {
len = sendmsg(connection->fd, &msg,
MSG_NOSIGNAL | MSG_DONTWAIT);
} while (len == -1 && errno == EINTR);
if (len == -1)
return -1;
close_fds(&connection->fds_out, MAX_FDS_OUT);
connection->out.tail += len;
}
connection->want_flush = 0;
return connection->out.head - tail;
}
uint32_t
wl_connection_pending_input(struct wl_connection *connection)
{
return wl_buffer_size(&connection->in);
}
int
wl_connection_read(struct wl_connection *connection)
{
struct iovec iov[2];
struct msghdr msg;
char cmsg[CLEN];
int len, count, ret;
if (wl_buffer_size(&connection->in) >= sizeof(connection->in.data)) {
errno = EOVERFLOW;
return -1;
}
wl_buffer_put_iov(&connection->in, iov, &count);
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_iov = iov;
msg.msg_iovlen = count;
msg.msg_control = cmsg;
msg.msg_controllen = sizeof cmsg;
msg.msg_flags = 0;
do {
len = wl_os_recvmsg_cloexec(connection->fd, &msg, MSG_DONTWAIT);
} while (len < 0 && errno == EINTR);
if (len <= 0)
return len;
ret = decode_cmsg(&connection->fds_in, &msg);
if (ret)
return -1;
connection->in.head += len;
return wl_connection_pending_input(connection);
}
int
wl_connection_write(struct wl_connection *connection,
const void *data, size_t count)
{
if (connection->out.head - connection->out.tail +
count > ARRAY_LENGTH(connection->out.data)) {
connection->want_flush = 1;
if (wl_connection_flush(connection) < 0)
return -1;
}
if (wl_buffer_put(&connection->out, data, count) < 0)
return -1;
connection->want_flush = 1;
return 0;
}
int
wl_connection_queue(struct wl_connection *connection,
const void *data, size_t count)
{
if (connection->out.head - connection->out.tail +
count > ARRAY_LENGTH(connection->out.data)) {
connection->want_flush = 1;
if (wl_connection_flush(connection) < 0)
return -1;
}
return wl_buffer_put(&connection->out, data, count);
}
int
wl_message_count_arrays(const struct wl_message *message)
{
int i, arrays;
for (i = 0, arrays = 0; message->signature[i]; i++) {
if (message->signature[i] == 'a')
arrays++;
}
return arrays;
}
int
wl_connection_get_fd(struct wl_connection *connection)
{
return connection->fd;
}
static int
wl_connection_put_fd(struct wl_connection *connection, int32_t fd)
{
if (wl_buffer_size(&connection->fds_out) == MAX_FDS_OUT * sizeof fd) {
connection->want_flush = 1;
if (wl_connection_flush(connection) < 0)
return -1;
}
return wl_buffer_put(&connection->fds_out, &fd, sizeof fd);
}
const char *
get_next_argument(const char *signature, struct argument_details *details)
{
details->nullable = 0;
for(; *signature; ++signature) {
switch(*signature) {
case 'i':
case 'u':
case 'f':
case 's':
case 'o':
case 'n':
case 'a':
case 'h':
details->type = *signature;
return signature + 1;
case '?':
details->nullable = 1;
}
}
details->type = '\0';
return signature;
}
int
arg_count_for_signature(const char *signature)
{
int count = 0;
for(; *signature; ++signature) {
switch(*signature) {
case 'i':
case 'u':
case 'f':
case 's':
case 'o':
case 'n':
case 'a':
case 'h':
++count;
}
}
return count;
}
int
wl_message_get_since(const struct wl_message *message)
{
int since;
since = atoi(message->signature);
if (since == 0)
since = 1;
return since;
}
void
wl_argument_from_va_list(const char *signature, union wl_argument *args,
int count, va_list ap)
{
int i;
const char *sig_iter;
struct argument_details arg;
sig_iter = signature;
for (i = 0; i < count; i++) {
sig_iter = get_next_argument(sig_iter, &arg);
switch(arg.type) {
case 'i':
args[i].i = va_arg(ap, int32_t);
break;
case 'u':
args[i].u = va_arg(ap, uint32_t);
break;
case 'f':
args[i].f = va_arg(ap, wl_fixed_t);
break;
case 's':
args[i].s = va_arg(ap, const char *);
break;
case 'o':
args[i].o = va_arg(ap, struct wl_object *);
break;
case 'n':
args[i].o = va_arg(ap, struct wl_object *);
break;
case 'a':
args[i].a = va_arg(ap, struct wl_array *);
break;
case 'h':
args[i].h = va_arg(ap, int32_t);
break;
case '\0':
return;
}
}
}
struct wl_closure *
wl_closure_marshal(struct wl_object *sender, uint32_t opcode,
union wl_argument *args,
const struct wl_message *message)
{
struct wl_closure *closure;
struct wl_object *object;
int i, count, fd, dup_fd;
const char *signature;
struct argument_details arg;
count = arg_count_for_signature(message->signature);
if (count > WL_CLOSURE_MAX_ARGS) {
wl_log("too many args (%d)\n", count);
errno = EINVAL;
return NULL;
}
closure = malloc(sizeof *closure);
if (closure == NULL) {
errno = ENOMEM;
return NULL;
}
memcpy(closure->args, args, count * sizeof *args);
signature = message->signature;
for (i = 0; i < count; i++) {
signature = get_next_argument(signature, &arg);
switch (arg.type) {
case 'f':
case 'u':
case 'i':
break;
case 's':
if (!arg.nullable && args[i].s == NULL)
goto err_null;
break;
case 'o':
if (!arg.nullable && args[i].o == NULL)
goto err_null;
break;
case 'n':
object = args[i].o;
if (!arg.nullable && object == NULL)
goto err_null;
closure->args[i].n = object ? object->id : 0;
break;
case 'a':
if (!arg.nullable && args[i].a == NULL)
goto err_null;
break;
case 'h':
fd = args[i].h;
dup_fd = wl_os_dupfd_cloexec(fd, 0);
if (dup_fd < 0)
wl_abort("dup failed: %s\n", strerror(errno));
closure->args[i].h = dup_fd;
break;
default:
wl_abort("unhandled format code: '%c'\n", arg.type);
break;
}
}
closure->sender_id = sender->id;
closure->opcode = opcode;
closure->message = message;
closure->count = count;
return closure;
err_null:
wl_closure_destroy(closure);
wl_log("error marshalling arguments for %s (signature %s): "
"null value passed for arg %i\n", message->name,
message->signature, i);
errno = EINVAL;
return NULL;
}
struct wl_closure *
wl_closure_vmarshal(struct wl_object *sender, uint32_t opcode, va_list ap,
const struct wl_message *message)
{
union wl_argument args[WL_CLOSURE_MAX_ARGS];
wl_argument_from_va_list(message->signature, args,
WL_CLOSURE_MAX_ARGS, ap);
return wl_closure_marshal(sender, opcode, args, message);
}
struct wl_closure *
wl_connection_demarshal(struct wl_connection *connection,
uint32_t size,
struct wl_map *objects,
const struct wl_message *message)
{
uint32_t *p, *next, *end, length, id;
int fd;
char *s;
unsigned int i, count, num_arrays;
const char *signature;
struct argument_details arg;
struct wl_closure *closure;
struct wl_array *array, *array_extra;
count = arg_count_for_signature(message->signature);
if (count > WL_CLOSURE_MAX_ARGS) {
wl_log("too many args (%d)\n", count);
errno = EINVAL;
wl_connection_consume(connection, size);
return NULL;
}
num_arrays = wl_message_count_arrays(message);
closure = malloc(sizeof *closure + size + num_arrays * sizeof *array);
if (closure == NULL) {
errno = ENOMEM;
wl_connection_consume(connection, size);
return NULL;
}
array_extra = closure->extra;
p = (uint32_t *)(closure->extra + num_arrays);
end = p + size / sizeof *p;
wl_connection_copy(connection, p, size);
closure->sender_id = *p++;
closure->opcode = *p++ & 0x0000ffff;
signature = message->signature;
for (i = 0; i < count; i++) {
signature = get_next_argument(signature, &arg);
if (arg.type != 'h' && p + 1 > end) {
wl_log("message too short, "
"object (%d), message %s(%s)\n",
*p, message->name, message->signature);
errno = EINVAL;
goto err;
}
switch (arg.type) {
case 'u':
closure->args[i].u = *p++;
break;
case 'i':
closure->args[i].i = *p++;
break;
case 'f':
closure->args[i].f = *p++;
break;
case 's':
length = *p++;
if (length == 0) {
closure->args[i].s = NULL;
break;
}
next = p + DIV_ROUNDUP(length, sizeof *p);
if (next > end) {
wl_log("message too short, "
"object (%d), message %s(%s)\n",
closure->sender_id, message->name,
message->signature);
errno = EINVAL;
goto err;
}
s = (char *) p;
if (length > 0 && s[length - 1] != '\0') {
wl_log("string not nul-terminated, "
"message %s(%s)\n",
message->name, message->signature);
errno = EINVAL;
goto err;
}
closure->args[i].s = s;
p = next;
break;
case 'o':
id = *p++;
closure->args[i].n = id;
if (id == 0 && !arg.nullable) {
wl_log("NULL object received on non-nullable "
"type, message %s(%s)\n", message->name,
message->signature);
errno = EINVAL;
goto err;
}
break;
case 'n':
id = *p++;
closure->args[i].n = id;
if (id == 0 && !arg.nullable) {
wl_log("NULL new ID received on non-nullable "
"type, message %s(%s)\n", message->name,
message->signature);
errno = EINVAL;
goto err;
}
if (wl_map_reserve_new(objects, id) < 0) {
wl_log("not a valid new object id (%u), "
"message %s(%s)\n",
id, message->name, message->signature);
errno = EINVAL;
goto err;
}
break;
case 'a':
length = *p++;
next = p + DIV_ROUNDUP(length, sizeof *p);
if (next > end) {
wl_log("message too short, "
"object (%d), message %s(%s)\n",
closure->sender_id, message->name,
message->signature);
errno = EINVAL;
goto err;
}
array_extra->size = length;
array_extra->alloc = 0;
array_extra->data = p;
closure->args[i].a = array_extra++;
p = next;
break;
case 'h':
if (connection->fds_in.tail == connection->fds_in.head) {
wl_log("file descriptor expected, "
"object (%d), message %s(%s)\n",
closure->sender_id, message->name,
message->signature);
errno = EINVAL;
goto err;
}
wl_buffer_copy(&connection->fds_in, &fd, sizeof fd);
connection->fds_in.tail += sizeof fd;
closure->args[i].h = fd;
break;
default:
wl_abort("unknown type\n");
break;
}
}
closure->count = count;
closure->message = message;
wl_connection_consume(connection, size);
return closure;
err:
wl_closure_destroy(closure);
wl_connection_consume(connection, size);
return NULL;
}
int
wl_closure_lookup_objects(struct wl_closure *closure, struct wl_map *objects)
{
struct wl_object *object;
const struct wl_message *message;
const char *signature;
struct argument_details arg;
int i, count;
uint32_t id;
message = closure->message;
signature = message->signature;
count = arg_count_for_signature(signature);
for (i = 0; i < count; i++) {
signature = get_next_argument(signature, &arg);
switch (arg.type) {
case 'o':
id = closure->args[i].n;
closure->args[i].o = NULL;
object = wl_map_lookup(objects, id);
if (object == WL_ZOMBIE_OBJECT) {
/* references object we've already
* destroyed client side */
object = NULL;
} else if (object == NULL && id != 0) {
wl_log("unknown object (%u), message %s(%s)\n",
id, message->name, message->signature);
errno = EINVAL;
return -1;
}
if (object != NULL && message->types[i] != NULL &&
!wl_interface_equal((object)->interface,
message->types[i])) {
wl_log("invalid object (%u), type (%s), "
"message %s(%s)\n",
id, (object)->interface->name,
message->name, message->signature);
errno = EINVAL;
return -1;
}
closure->args[i].o = object;
}
}
return 0;
}
static void
convert_arguments_to_ffi(const char *signature, uint32_t flags,
union wl_argument *args,
int count, ffi_type **ffi_types, void** ffi_args)
{
int i;
const char *sig_iter;
struct argument_details arg;
sig_iter = signature;
for (i = 0; i < count; i++) {
sig_iter = get_next_argument(sig_iter, &arg);
switch(arg.type) {
case 'i':
ffi_types[i] = &ffi_type_sint32;
ffi_args[i] = &args[i].i;
break;
case 'u':
ffi_types[i] = &ffi_type_uint32;
ffi_args[i] = &args[i].u;
break;
case 'f':
ffi_types[i] = &ffi_type_sint32;
ffi_args[i] = &args[i].f;
break;
case 's':
ffi_types[i] = &ffi_type_pointer;
ffi_args[i] = &args[i].s;
break;
case 'o':
ffi_types[i] = &ffi_type_pointer;
ffi_args[i] = &args[i].o;
break;
case 'n':
if (flags & WL_CLOSURE_INVOKE_CLIENT) {
ffi_types[i] = &ffi_type_pointer;
ffi_args[i] = &args[i].o;
} else {
ffi_types[i] = &ffi_type_uint32;
ffi_args[i] = &args[i].n;
}
break;
case 'a':
ffi_types[i] = &ffi_type_pointer;
ffi_args[i] = &args[i].a;
break;
case 'h':
ffi_types[i] = &ffi_type_sint32;
ffi_args[i] = &args[i].h;
break;
default:
wl_abort("unknown type\n");
break;
}
}
}
void
wl_closure_invoke(struct wl_closure *closure, uint32_t flags,
struct wl_object *target, uint32_t opcode, void *data)
{
int count;
ffi_cif cif;
ffi_type *ffi_types[WL_CLOSURE_MAX_ARGS + 2];
void * ffi_args[WL_CLOSURE_MAX_ARGS + 2];
void (* const *implementation)(void);
count = arg_count_for_signature(closure->message->signature);
ffi_types[0] = &ffi_type_pointer;
ffi_args[0] = &data;
ffi_types[1] = &ffi_type_pointer;
ffi_args[1] = ⌖
convert_arguments_to_ffi(closure->message->signature, flags, closure->args,
count, ffi_types + 2, ffi_args + 2);
ffi_prep_cif(&cif, FFI_DEFAULT_ABI,
count + 2, &ffi_type_void, ffi_types);
implementation = target->implementation;
if (!implementation[opcode]) {
wl_abort("listener function for opcode %u of %s is NULL\n",
opcode, target->interface->name);
}
ffi_call(&cif, implementation[opcode], NULL, ffi_args);
}
void
wl_closure_dispatch(struct wl_closure *closure, wl_dispatcher_func_t dispatcher,
struct wl_object *target, uint32_t opcode)
{
dispatcher(target->implementation, target, opcode, closure->message,
closure->args);
}
static int
copy_fds_to_connection(struct wl_closure *closure,
struct wl_connection *connection)
{
const struct wl_message *message = closure->message;
uint32_t i, count;
struct argument_details arg;
const char *signature = message->signature;
int fd;
count = arg_count_for_signature(signature);
for (i = 0; i < count; i++) {
signature = get_next_argument(signature, &arg);
if (arg.type != 'h')
continue;
fd = closure->args[i].h;
if (wl_connection_put_fd(connection, fd)) {
wl_log("request could not be marshaled: "
"can't send file descriptor");
return -1;
}
}
return 0;
}
static uint32_t
buffer_size_for_closure(struct wl_closure *closure)
{
const struct wl_message *message = closure->message;
int i, count;
struct argument_details arg;
const char *signature;
uint32_t size, buffer_size = 0;
signature = message->signature;
count = arg_count_for_signature(signature);
for (i = 0; i < count; i++) {
signature = get_next_argument(signature, &arg);
switch (arg.type) {
case 'h':
break;
case 'u':
case 'i':
case 'f':
case 'o':
case 'n':
buffer_size++;
break;
case 's':
if (closure->args[i].s == NULL) {
buffer_size++;
break;
}
size = strlen(closure->args[i].s) + 1;
buffer_size += 1 + DIV_ROUNDUP(size, sizeof(uint32_t));
break;
case 'a':
if (closure->args[i].a == NULL) {
buffer_size++;
break;
}
size = closure->args[i].a->size;
buffer_size += (1 + DIV_ROUNDUP(size, sizeof(uint32_t)));
break;
default:
break;
}
}
return buffer_size + 2;
}
static int
serialize_closure(struct wl_closure *closure, uint32_t *buffer,
size_t buffer_count)
{
const struct wl_message *message = closure->message;
unsigned int i, count, size;
uint32_t *p, *end;
struct argument_details arg;
const char *signature;
if (buffer_count < 2)
goto overflow;
p = buffer + 2;
end = buffer + buffer_count;
signature = message->signature;
count = arg_count_for_signature(signature);
for (i = 0; i < count; i++) {
signature = get_next_argument(signature, &arg);
if (arg.type == 'h')
continue;
if (p + 1 > end)
goto overflow;
switch (arg.type) {
case 'u':
*p++ = closure->args[i].u;
break;
case 'i':
*p++ = closure->args[i].i;
break;
case 'f':
*p++ = closure->args[i].f;
break;
case 'o':
*p++ = closure->args[i].o ? closure->args[i].o->id : 0;
break;
case 'n':
*p++ = closure->args[i].n;
break;
case 's':
if (closure->args[i].s == NULL) {
*p++ = 0;
break;
}
size = strlen(closure->args[i].s) + 1;
*p++ = size;
if (p + DIV_ROUNDUP(size, sizeof *p) > end)
goto overflow;
memcpy(p, closure->args[i].s, size);
p += DIV_ROUNDUP(size, sizeof *p);
break;
case 'a':
if (closure->args[i].a == NULL) {
*p++ = 0;
break;
}
size = closure->args[i].a->size;
*p++ = size;
if (p + DIV_ROUNDUP(size, sizeof *p) > end)
goto overflow;
memcpy(p, closure->args[i].a->data, size);
p += DIV_ROUNDUP(size, sizeof *p);
break;
default:
break;
}
}
size = (p - buffer) * sizeof *p;
buffer[0] = closure->sender_id;
buffer[1] = size << 16 | (closure->opcode & 0x0000ffff);
return size;
overflow:
errno = ERANGE;
return -1;
}
int
wl_closure_send(struct wl_closure *closure, struct wl_connection *connection)
{
int size;
uint32_t buffer_size;
uint32_t *buffer;
int result;
if (copy_fds_to_connection(closure, connection))
return -1;
buffer_size = buffer_size_for_closure(closure);
buffer = zalloc(buffer_size * sizeof buffer[0]);
if (buffer == NULL)
return -1;
size = serialize_closure(closure, buffer, buffer_size);
if (size < 0) {
free(buffer);
return -1;
}
result = wl_connection_write(connection, buffer, size);
free(buffer);
return result;
}
int
wl_closure_queue(struct wl_closure *closure, struct wl_connection *connection)
{
int size;
uint32_t buffer_size;
uint32_t *buffer;
int result;
if (copy_fds_to_connection(closure, connection))
return -1;
buffer_size = buffer_size_for_closure(closure);
buffer = malloc(buffer_size * sizeof buffer[0]);
if (buffer == NULL)
return -1;
size = serialize_closure(closure, buffer, buffer_size);
if (size < 0) {
free(buffer);
return -1;
}
result = wl_connection_queue(connection, buffer, size);
free(buffer);
return result;
}
void
wl_closure_print(struct wl_closure *closure, struct wl_object *target, int send)
{
int i;
struct argument_details arg;
const char *signature = closure->message->signature;
struct timespec tp;
unsigned int time;
clock_gettime(CLOCK_REALTIME, &tp);
time = (tp.tv_sec * 1000000L) + (tp.tv_nsec / 1000);
fprintf(stderr, "[%10.3f] %s%s@%u.%s(",
time / 1000.0,
send ? " -> " : "",
target->interface->name, target->id,
closure->message->name);
for (i = 0; i < closure->count; i++) {
signature = get_next_argument(signature, &arg);
if (i > 0)
fprintf(stderr, ", ");
switch (arg.type) {
case 'u':
fprintf(stderr, "%u", closure->args[i].u);
break;
case 'i':
fprintf(stderr, "%d", closure->args[i].i);
break;
case 'f':
fprintf(stderr, "%f",
wl_fixed_to_double(closure->args[i].f));
break;
case 's':
fprintf(stderr, "\"%s\"", closure->args[i].s);
break;
case 'o':
if (closure->args[i].o)
fprintf(stderr, "%s@%u",
closure->args[i].o->interface->name,
closure->args[i].o->id);
else
fprintf(stderr, "nil");
break;
case 'n':
fprintf(stderr, "new id %s@",
(closure->message->types[i]) ?
closure->message->types[i]->name :
"[unknown]");
if (closure->args[i].n != 0)
fprintf(stderr, "%u", closure->args[i].n);
else
fprintf(stderr, "nil");
break;
case 'a':
fprintf(stderr, "array");
break;
case 'h':
fprintf(stderr, "fd %d", closure->args[i].h);
break;
}
}
fprintf(stderr, ")\n");
}
void
wl_closure_destroy(struct wl_closure *closure)
{
free(closure);
}