/* Initialization of group */
void sbuxton_set_group(char *group, char *layer)
{
if (!_client_connection()) {
errno = ENOTCONN;
return;
}
saved_errno = errno;
int status = 0;
/* strcpy the name of the layer and group*/
strncpy(_layer, layer, MAX_LG_LEN-1);
strncpy(_group, group, MAX_LG_LEN-1);
/* In case a string is longer than MAX_LG_LEN, set the last byte to null */
_layer[MAX_LG_LEN -1] = '\0';
_group[MAX_LG_LEN -1] = '\0';
BuxtonKey g = buxton_key_create(_group, NULL, _layer, BUXTON_TYPE_STRING);
buxton_debug("buxton key group = %s\n", buxton_key_get_group(g));
if (buxton_create_group(client, g, _cg_cb, &status, true)
|| !status) {
buxton_debug("Create group call failed.\n");
errno = EBADMSG;
} else {
buxton_debug("Switched to group: %s, layer: %s.\n", buxton_key_get_group(g),
buxton_key_get_layer(g));
errno = saved_errno;
}
_client_disconnect();
}
int32_t sbuxton_get_int32(char *key)
{
/* make sure client connection is open */
if (!_client_connection()) {
errno = ENOTCONN;
return -1;
}
/* create key */
BuxtonKey _key = buxton_key_create(_group, key, _layer, BUXTON_TYPE_INT32);
/* return value */
vstatus ret;
ret.type = BUXTON_TYPE_INT32;
saved_errno = errno;
/* get value */
if (buxton_get_value(client, _key, _bg_cb, &ret, true)) {
buxton_debug("Get int32_t call failed.\n");
}
if (!ret.status) {
errno = EACCES;
} else {
errno = saved_errno;
}
_client_disconnect();
return ret.val.i32val;
}
/* Set and get int32_t value for buxton key with type BUXTON_TYPE_INT32 */
void sbuxton_set_int32(char *key, int32_t value)
{
/* make sure client connection is open */
if (!_client_connection()) {
errno = ENOTCONN;
return;
}
/* create key */
BuxtonKey _key = buxton_key_create(_group, key, _layer, BUXTON_TYPE_INT32);
/* return value and status */
vstatus ret;
ret.type = BUXTON_TYPE_INT32;
ret.val.i32val = value;
saved_errno = errno;
/* call buxton_set_value for type BUXTON_TYPE_INT32 */
if (buxton_set_value(client, _key, &value, _bs_cb, &ret, true)) {
buxton_debug("Set int32_t call failed.\n");
return;
}
if (!ret.status) {
errno = EACCES;
} else {
errno = saved_errno;
}
_client_disconnect();
}
/* Set and get char * value for buxton key with type BUXTON_TYPE_STRING */
void sbuxton_set_string(char *key, char *value )
{
/* make sure client connection is open */
if (!_client_connection()) {
errno = ENOTCONN;
return;
}
/* create key */
BuxtonKey _key = buxton_key_create(_group, key, _layer, BUXTON_TYPE_STRING);
/* return value and status */
vstatus ret;
ret.type = BUXTON_TYPE_STRING;
ret.val.sval = value;
saved_errno = errno;
/* set value */
if (buxton_set_value(client, _key, value, _bs_cb, &ret, true)) {
buxton_debug("Set string call failed.\n");
}
if (!ret.status) {
errno = EACCES;
} else {
errno = saved_errno;
}
_client_disconnect();
}
/* Remove group given its name and layer */
void sbuxton_remove_group(char *group_name, char *layer)
{
/* make sure client connection is open */
if (!_client_connection()) {
errno = ENOTCONN;
return;
}
saved_errno = errno;
BuxtonKey group = _buxton_group_create(group_name, layer);
int status;
if (buxton_remove_group(client, group, _rg_cb, &status, true)) {
buxton_debug("Remove group call failed.\n");
}
if (!status) {
errno = EACCES;
} else {
errno = saved_errno;
}
_client_disconnect();
}
bool buxton_cache_smack_rules(void)
{
smack_check();
FILE *load_file = NULL;
char *rule_pair = NULL;
int ret = true;
bool have_rules = false;
struct stat buf;
if (_smackrules) {
hashmap_free(_smackrules);
}
_smackrules = hashmap_new(string_hash_func, string_compare_func);
if (!_smackrules) {
abort();
}
//FIXME: should check for a proper mount point instead
if ((stat(SMACK_MOUNT_DIR, &buf) == -1) || !S_ISDIR(buf.st_mode)) {
buxton_log("Smack filesystem not detected; disabling Smack checks\n");
have_smack = false;
goto end;
}
load_file = fopen(buxton_smack_load_file(), "r");
if (!load_file) {
switch (errno) {
case ENOENT:
buxton_log("Smackfs load2 file not found; disabling Smack checks\n");
have_smack = false;
goto end;
default:
buxton_log("fopen(): %m\n");
ret = false;
goto end;
}
}
do {
int r;
int chars;
BuxtonKeyAccessType *accesstype;
char subject[SMACK_LABEL_LEN+1] = { 0, };
char object[SMACK_LABEL_LEN+1] = { 0, };
char access[ACC_LEN] = { 0, };
/* read contents from load2 */
chars = fscanf(load_file, "%s %s %s\n", subject, object, access);
if (ferror(load_file)) {
buxton_log("fscanf(): %m\n");
ret = false;
goto end;
}
if (!have_rules && chars == EOF && feof(load_file)) {
buxton_debug("No loaded Smack rules found\n");
goto end;
}
if (chars != 3) {
buxton_log("Corrupt load file detected\n");
ret = false;
goto end;
}
have_rules = true;
r = asprintf(&rule_pair, "%s %s", subject, object);
if (r == -1) {
abort();
}
accesstype = malloc0(sizeof(BuxtonKeyAccessType));
if (!accesstype) {
abort();
}
*accesstype = ACCESS_NONE;
if (strchr(access, 'r')) {
*accesstype |= ACCESS_READ;
}
if (strchr(access, 'w')) {
*accesstype |= ACCESS_WRITE;
}
hashmap_put(_smackrules, rule_pair, accesstype);
} while (!feof(load_file));
end:
if (load_file) {
fclose(load_file);
}
return ret;
}
bool buxton_check_smack_access(BuxtonString *subject, BuxtonString *object, BuxtonKeyAccessType request)
{
smack_check();
_cleanup_free_ char *key = NULL;
int r;
BuxtonKeyAccessType *access;
assert(subject);
assert(object);
assert((request == ACCESS_READ) || (request == ACCESS_WRITE));
assert(_smackrules);
buxton_debug("Subject: %s\n", subject->value);
buxton_debug("Object: %s\n", object->value);
/* check the builtin Smack rules first */
if (streq(subject->value, "*")) {
return false;
}
if (streq(object->value, "@") || streq(subject->value, "@")) {
return true;
}
if (streq(object->value, "*")) {
return true;
}
if (streq(subject->value, object->value)) {
return true;
}
if (request == ACCESS_READ) {
if (streq(object->value, "_")) {
return true;
}
if (streq(subject->value, "^")) {
return true;
}
}
/* finally, check the loaded rules */
r = asprintf(&key, "%s %s", subject->value, object->value);
if (r == -1) {
abort();
}
buxton_debug("Key: %s\n", key);
access = hashmap_get(_smackrules, key);
if (!access) {
/* A null value is not an error, since clients may try to
* read/write keys with labels that are not in the loaded
* rule set. In this situation, access is simply denied,
* because there are no further rules to consider.
*/
buxton_debug("Value of key '%s' is NULL\n", key);
return false;
}
/* After debugging, change this code to: */
/* return ((*access) & request); */
if (access) {
buxton_debug("Value: %x\n", *access);
}
if (request == ACCESS_READ && (*access) & request) {
buxton_debug("Read access granted!\n");
return true;
}
if (request == ACCESS_WRITE && ((*access) & ACCESS_READ && (*access) & ACCESS_WRITE)) {
buxton_debug("Write access granted!\n");
return true;
}
buxton_debug("Access denied!\n");
return false;
}
/**
* Entry point into bt-daemon
* @param argc Number of arguments passed
* @param argv An array of string arguments
* @returns EXIT_SUCCESS if the operation succeeded, otherwise EXIT_FAILURE
*/
int main(int argc, char *argv[])
{
int fd;
int smackfd = -1;
socklen_t addr_len;
struct sockaddr_un remote;
int descriptors;
int ret;
bool manual_start = false;
struct sigaction sa;
if (!buxton_cache_smack_rules())
exit(EXIT_FAILURE);
smackfd = buxton_watch_smack_rules();
if (smackfd < 0 && errno)
exit(EXIT_FAILURE);
self.nfds_alloc = 0;
self.accepting_alloc = 0;
self.nfds = 0;
self.buxton.client.direct = true;
self.buxton.client.uid = geteuid();
if (!buxton_direct_open(&self.buxton))
exit(EXIT_FAILURE);
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
sa.sa_handler = my_handler;
ret = sigaction(SIGINT, &sa, NULL);
if (ret == -1)
exit(EXIT_FAILURE);
ret = sigaction(SIGTERM, &sa, NULL);
if (ret == -1)
exit(EXIT_FAILURE);
/* For client notifications */
self.notify_mapping = hashmap_new(string_hash_func, string_compare_func);
/* Store a list of connected clients */
LIST_HEAD_INIT(client_list_item, self.client_list);
descriptors = sd_listen_fds(0);
if (descriptors < 0) {
buxton_log("sd_listen_fds: %m\n");
exit(EXIT_FAILURE);
} else if (descriptors == 0) {
/* Manual invocation */
manual_start = true;
union {
struct sockaddr sa;
struct sockaddr_un un;
} sa;
fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd < 0) {
buxton_log("socket(): %m\n");
exit(EXIT_FAILURE);
}
memset(&sa, 0, sizeof(sa));
sa.un.sun_family = AF_UNIX;
strncpy(sa.un.sun_path, BUXTON_SOCKET, sizeof(sa.un.sun_path) - 1);
sa.un.sun_path[sizeof(sa.un.sun_path)-1] = 0;
ret = unlink(sa.un.sun_path);
if (ret == -1 && errno != ENOENT) {
exit(EXIT_FAILURE);
}
if (bind(fd, &sa.sa, sizeof(sa)) < 0) {
buxton_log("bind(): %m\n");
exit(EXIT_FAILURE);
}
chmod(sa.un.sun_path, 0666);
if (listen(fd, SOMAXCONN) < 0) {
buxton_log("listen(): %m\n");
exit(EXIT_FAILURE);
}
add_pollfd(&self, fd, POLLIN | POLLPRI, true);
} else {
/* systemd socket activation */
for (fd = SD_LISTEN_FDS_START + 0; fd < SD_LISTEN_FDS_START + descriptors; fd++) {
if (sd_is_fifo(fd, NULL)) {
add_pollfd(&self, fd, POLLIN, false);
buxton_debug("Added fd %d type FIFO\n", fd);
} else if (sd_is_socket_unix(fd, SOCK_STREAM, -1, BUXTON_SOCKET, 0)) {
add_pollfd(&self, fd, POLLIN | POLLPRI, true);
buxton_debug("Added fd %d type UNIX\n", fd);
} else if (sd_is_socket(fd, AF_UNSPEC, 0, -1)) {
add_pollfd(&self, fd, POLLIN | POLLPRI, true);
buxton_debug("Added fd %d type SOCKET\n", fd);
}
}
}
if (smackfd >= 0) {
/* add Smack rule fd to pollfds */
add_pollfd(&self, smackfd, POLLIN | POLLPRI, false);
}
buxton_log("%s: Started\n", argv[0]);
/* Enter loop to accept clients */
for (;;) {
ret = poll(self.pollfds, self.nfds, -1);
if (ret < 0) {
buxton_log("poll(): %m\n");
if (errno == EINTR) {
if (do_shutdown)
break;
else
continue;
}
break;
}
if (ret == 0)
continue;
for (nfds_t i=0; i<self.nfds; i++) {
client_list_item *cl = NULL;
char discard[256];
if (self.pollfds[i].revents == 0)
continue;
if (self.pollfds[i].fd == -1) {
/* TODO: Remove client from list */
buxton_debug("Removing / Closing client for fd %d\n", self.pollfds[i].fd);
del_pollfd(&self, i);
continue;
}
if (smackfd >= 0) {
if (self.pollfds[i].fd == smackfd) {
if (!buxton_cache_smack_rules())
exit(EXIT_FAILURE);
buxton_log("Reloaded Smack access rules\n");
/* discard inotify data itself */
while (read(smackfd, &discard, 256) == 256);
continue;
}
}
if (self.accepting[i] == true) {
struct timeval tv;
int fd;
int on = 1;
addr_len = sizeof(remote);
if ((fd = accept(self.pollfds[i].fd,
(struct sockaddr *)&remote, &addr_len)) == -1) {
buxton_log("accept(): %m\n");
break;
}
buxton_debug("New client fd %d connected through fd %d\n", fd, self.pollfds[i].fd);
cl = malloc0(sizeof(client_list_item));
if (!cl)
exit(EXIT_FAILURE);
LIST_INIT(client_list_item, item, cl);
cl->fd = fd;
cl->cred = (struct ucred) {0, 0, 0};
LIST_PREPEND(client_list_item, item, self.client_list, cl);
/* poll for data on this new client as well */
add_pollfd(&self, cl->fd, POLLIN | POLLPRI, false);
/* Mark our packets as high prio */
if (setsockopt(cl->fd, SOL_SOCKET, SO_PRIORITY, &on, sizeof(on)) == -1)
buxton_log("setsockopt(SO_PRIORITY): %m\n");
/* Set socket recv timeout */
tv.tv_sec = SOCKET_TIMEOUT;
tv.tv_usec = 0;
if (setsockopt(cl->fd, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv,
sizeof(struct timeval)) == -1)
buxton_log("setsockopt(SO_RCVTIMEO): %m\n");
/* check if this is optimal or not */
break;
}
assert(self.accepting[i] == 0);
if (smackfd >= 0)
assert(self.pollfds[i].fd != smackfd);
/* handle data on any connection */
/* TODO: Replace with hash table lookup */
LIST_FOREACH(item, cl, self.client_list)
if (self.pollfds[i].fd == cl->fd)
break;
assert(cl);
handle_client(&self, cl, i);
}
}
buxton_log("%s: Closing all connections\n", argv[0]);
if (manual_start)
unlink(BUXTON_SOCKET);
for (int i = 0; i < self.nfds; i++) {
close(self.pollfds[i].fd);
}
for (client_list_item *i = self.client_list; i;) {
client_list_item *j = i->item_next;
free(i);
i = j;
}
hashmap_free(self.notify_mapping);
buxton_direct_close(&self.buxton);
return EXIT_SUCCESS;
}
ssize_t buxton_deserialize_message(uint8_t *data,
BuxtonControlMessage *r_message,
size_t size, uint32_t *r_msgid,
BuxtonData **list)
{
size_t offset = 0;
ssize_t ret = -1;
size_t min_length = BUXTON_MESSAGE_HEADER_LENGTH;
uint16_t control, message;
size_t n_params, c_param, c_length;
BuxtonDataType c_type = 0;
BuxtonData *k_list = NULL;
BuxtonData c_data;
uint32_t msgid;
assert(data);
assert(r_message);
assert(list);
buxton_debug("Deserializing message...\n");
buxton_debug("size=%lu\n", size);
if (size < min_length) {
errno = EINVAL;
goto end;
}
/* Copy the control code */
control = *(uint16_t*)data;
offset += sizeof(uint16_t);
/* Check this is a valid buxton message */
if (control != BUXTON_CONTROL_CODE) {
errno = EINVAL;
goto end;
}
/* Obtain the control message */
message = *(BuxtonControlMessage*)(data+offset);
offset += sizeof(uint16_t);
/* Ensure control message is in valid range */
if (message <= BUXTON_CONTROL_MIN || message >= BUXTON_CONTROL_MAX) {
errno = EINVAL;
goto end;
}
/* Skip size since our caller got this already */
offset += sizeof(uint32_t);
/* Obtain the message id */
msgid = *(uint32_t*)(data+offset);
offset += sizeof(uint32_t);
/* Obtain number of parameters */
n_params = *(uint32_t*)(data+offset);
offset += sizeof(uint32_t);
buxton_debug("total params: %d\n", n_params);
if (n_params > BUXTON_MESSAGE_MAX_PARAMS) {
errno = EINVAL;
goto end;
}
k_list = malloc0(sizeof(BuxtonData)*n_params);
if (n_params && !k_list) {
errno = ENOMEM;
goto end;
}
memzero(&c_data, sizeof(BuxtonData));
for (c_param = 0; c_param < n_params; c_param++) {
buxton_debug("param: %d\n", c_param + 1);
buxton_debug("offset=%lu\n", offset);
/* Don't read past the end of the buffer */
if (offset + sizeof(uint16_t) + sizeof(uint32_t) > size) {
errno = EINVAL;
goto end;
}
/* Now unpack type */
memcpy(&c_type, data+offset, sizeof(uint16_t));
offset += sizeof(uint16_t);
if (c_type >= BUXTON_TYPE_MAX || c_type <= BUXTON_TYPE_MIN) {
errno = EINVAL;
goto end;
}
/* Retrieve the length of the value */
c_length = *(uint32_t*)(data+offset);
if (c_length == 0 && c_type != BUXTON_TYPE_STRING) {
errno = EINVAL;
goto end;
}
offset += sizeof(uint32_t);
buxton_debug("value length: %lu\n", c_length);
/* Don't try to read past the end of our buffer */
if (offset + c_length > size) {
errno = EINVAL;
goto end;
}
switch (c_type) {
case BUXTON_TYPE_STRING:
if (c_length) {
c_data.store.d_string.value = malloc(c_length);
if (!c_data.store.d_string.value) {
errno = ENOMEM;
goto end;
}
memcpy(c_data.store.d_string.value, data+offset, c_length);
c_data.store.d_string.length = (uint32_t)c_length;
if (c_data.store.d_string.value[c_length-1] != 0x00) {
errno = EINVAL;
buxton_debug("buxton_deserialize_message(): Garbage message\n");
free(c_data.store.d_string.value);
goto end;
}
} else {
c_data.store.d_string.value = NULL;
c_data.store.d_string.length = 0;
}
break;
case BUXTON_TYPE_INT32:
c_data.store.d_int32 = *(int32_t*)(data+offset);
break;
case BUXTON_TYPE_UINT32:
c_data.store.d_uint32 = *(uint32_t*)(data+offset);
break;
case BUXTON_TYPE_INT64:
c_data.store.d_int64 = *(int64_t*)(data+offset);
break;
case BUXTON_TYPE_UINT64:
c_data.store.d_uint64 = *(uint64_t*)(data+offset);
break;
case BUXTON_TYPE_FLOAT:
c_data.store.d_float = *(float*)(data+offset);
break;
case BUXTON_TYPE_DOUBLE:
memcpy(&c_data.store.d_double, data + offset, sizeof(double));
break;
case BUXTON_TYPE_BOOLEAN:
c_data.store.d_boolean = *(bool*)(data+offset);
break;
default:
errno = EINVAL;
goto end;
}
c_data.type = c_type;
k_list[c_param] = c_data;
memzero(&c_data, sizeof(BuxtonData));
offset += c_length;
}
*r_message = message;
*r_msgid = msgid;
if (n_params == 0) {
*list = NULL;
free(k_list);
k_list = NULL;
} else {
*list = k_list;
}
ret = (ssize_t)n_params;
end:
if (ret <= 0) {
free(k_list);
}
buxton_debug("Deserializing returned:%i\n", ret);
return ret;
}
size_t buxton_serialize_message(uint8_t **dest, BuxtonControlMessage message,
uint32_t msgid, BuxtonArray *list)
{
uint16_t i = 0;
uint8_t *data = NULL;
size_t ret = 0;
size_t offset = 0;
size_t size = 0;
size_t curSize = 0;
uint16_t control, msg;
assert(dest);
assert(list);
buxton_debug("Serializing message...\n");
if (list->len > BUXTON_MESSAGE_MAX_PARAMS) {
errno = EINVAL;
return ret;
}
if (message >= BUXTON_CONTROL_MAX || message < BUXTON_CONTROL_SET) {
errno = EINVAL;
return ret;
}
/*
* initial size =
* control code + control message (uint16_t * 2) +
* message size (uint32_t) +
* message id (uint32_t) +
* param count (uint32_t)
*/
data = malloc0(sizeof(uint32_t) + sizeof(uint32_t) + sizeof(uint32_t) +
sizeof(uint32_t));
if (!data) {
errno = ENOMEM;
goto end;
}
control = BUXTON_CONTROL_CODE;
memcpy(data, &control, sizeof(uint16_t));
offset += sizeof(uint16_t);
msg = (uint16_t)message;
memcpy(data+offset, &msg, sizeof(uint16_t));
offset += sizeof(uint16_t);
/* Save room for final size */
offset += sizeof(uint32_t);
memcpy(data+offset, &msgid, sizeof(uint32_t));
offset += sizeof(uint32_t);
/* Now write the parameter count */
memcpy(data+offset, &(list->len), sizeof(uint32_t));
offset += sizeof(uint32_t);
size = offset;
/* Deal with parameters */
BuxtonData *param;
size_t p_length = 0;
for (i=0; i < list->len; i++) {
param = buxton_array_get(list, i);
if (!param) {
errno = EINVAL;
goto fail;
}
switch (param->type) {
case BUXTON_TYPE_STRING:
p_length = param->store.d_string.length;
break;
case BUXTON_TYPE_INT32:
p_length = sizeof(int32_t);
break;
case BUXTON_TYPE_UINT32:
p_length = sizeof(uint32_t);
break;
case BUXTON_TYPE_INT64:
p_length = sizeof(int64_t);
break;
case BUXTON_TYPE_UINT64:
p_length = sizeof(uint64_t);
break;
case BUXTON_TYPE_FLOAT:
p_length = sizeof(float);
break;
case BUXTON_TYPE_DOUBLE:
p_length = sizeof(double);
break;
case BUXTON_TYPE_BOOLEAN:
p_length = sizeof(bool);
break;
default:
errno = EINVAL;
buxton_log("Invalid parameter type %lu\n", param->type);
goto fail;
};
buxton_debug("offset: %lu\n", offset);
buxton_debug("value length: %lu\n", p_length);
/* Need to allocate enough room to hold this data */
size += sizeof(uint16_t) + sizeof(uint32_t) + p_length;
if (curSize < size) {
if (!(data = greedy_realloc((void**)&data, &curSize, size))) {
errno = ENOMEM;
goto fail;
}
memzero(data+offset, size - offset);
}
/* Copy data type */
memcpy(data+offset, &(param->type), sizeof(uint16_t));
offset += sizeof(uint16_t);
/* Write out the length of value */
memcpy(data+offset, &p_length, sizeof(uint32_t));
offset += sizeof(uint32_t);
switch (param->type) {
case BUXTON_TYPE_STRING:
memcpy(data+offset, param->store.d_string.value, p_length);
break;
case BUXTON_TYPE_INT32:
memcpy(data+offset, &(param->store.d_int32), sizeof(int32_t));
break;
case BUXTON_TYPE_UINT32:
memcpy(data+offset, &(param->store.d_uint32), sizeof(uint32_t));
break;
case BUXTON_TYPE_INT64:
memcpy(data+offset, &(param->store.d_int64), sizeof(int64_t));
break;
case BUXTON_TYPE_UINT64:
memcpy(data+offset, &(param->store.d_uint64), sizeof(uint64_t));
break;
case BUXTON_TYPE_FLOAT:
memcpy(data+offset, &(param->store.d_float), sizeof(float));
break;
case BUXTON_TYPE_DOUBLE:
memcpy(data+offset, &(param->store.d_double), sizeof(double));
break;
case BUXTON_TYPE_BOOLEAN:
memcpy(data+offset, &(param->store.d_boolean), sizeof(bool));
break;
default:
/* already tested this above, can't get here
* normally */
assert(0);
};
offset += p_length;
p_length = 0;
}
memcpy(data+BUXTON_LENGTH_OFFSET, &offset, sizeof(uint32_t));
ret = offset;
*dest = data;
fail:
/* Clean up */
if (ret == 0) {
free(data);
}
end:
buxton_debug("Serializing returned:%lu\n", ret);
return ret;
}
void buxton_deserialize(uint8_t *source, BuxtonData *target,
BuxtonString *label)
{
size_t offset = 0;
size_t length = 0;
BuxtonDataType type;
assert(source);
assert(target);
assert(label);
/* Retrieve the BuxtonDataType */
type = *(BuxtonDataType*)source;
offset += sizeof(BuxtonDataType);
/* Retrieve the length of the label */
label->length = *(uint32_t*)(source+offset);
offset += sizeof(uint32_t);
/* Retrieve the length of the value */
length = *(uint32_t*)(source+offset);
offset += sizeof(uint32_t);
/* Retrieve the label */
label->value = malloc(label->length);
if (label->length > 0 && !label->value) {
abort();
}
memcpy(label->value, source+offset, label->length);
offset += label->length;
switch (type) {
case BUXTON_TYPE_STRING:
/* User must free the string */
target->store.d_string.value = malloc(length);
if (!target->store.d_string.value) {
abort();
}
memcpy(target->store.d_string.value, source+offset, length);
target->store.d_string.length = (uint32_t)length;
break;
case BUXTON_TYPE_INT32:
target->store.d_int32 = *(int32_t*)(source+offset);
break;
case BUXTON_TYPE_UINT32:
target->store.d_uint32 = *(uint32_t*)(source+offset);
break;
case BUXTON_TYPE_INT64:
target->store.d_int64 = *(int64_t*)(source+offset);
break;
case BUXTON_TYPE_UINT64:
target->store.d_uint64 = *(uint64_t*)(source+offset);
break;
case BUXTON_TYPE_FLOAT:
target->store.d_float = *(float*)(source+offset);
break;
case BUXTON_TYPE_DOUBLE:
memcpy(&target->store.d_double, source + offset, sizeof(double));
break;
case BUXTON_TYPE_BOOLEAN:
target->store.d_boolean = *(bool*)(source+offset);
break;
default:
buxton_debug("Invalid BuxtonDataType: %lu\n", type);
abort();
}
/* Successful */
target->type = type;
}