#include "dbus-transport.h"
#include "dbus-transport-kdbus.h"
-#include <dbus/dbus-transport-protected.h>
+//#include <dbus/dbus-transport-protected.h>
+#include "dbus-transport-protected.h"
#include "dbus-connection-internal.h"
#include "kdbus.h"
#include "dbus-watch.h"
#include "dbus-errors.h"
#include "dbus-bus.h"
+#include "kdbus-common.h"
#include <linux/types.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/stat.h>
#include <openssl/md5.h>
-#define KDBUS_ALIGN8(l) (((l) + 7) & ~7)
-#define KDBUS_PART_HEADER_SIZE offsetof(struct kdbus_item, data)
-#define KDBUS_ITEM_SIZE(s) KDBUS_ALIGN8((s) + KDBUS_PART_HEADER_SIZE)
-
-#define KDBUS_PART_NEXT(part) \
- (typeof(part))(((uint8_t *)part) + KDBUS_ALIGN8((part)->size))
#define KDBUS_PART_FOREACH(part, head, first) \
for (part = (head)->first; \
(uint8_t *)(part) < (uint8_t *)(head) + (head)->size; \
#define MEMFD_SIZE_THRESHOLD (2 * 1024 * 1024LU) // over this memfd is used
#define KDBUS_MSG_DECODE_DEBUG 0
+//#define DBUS_AUTHENTICATION
#define ITER_APPEND_STR(string) \
if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING, &string)) \
* Kdbus kernel module.
*/
__u64 bloom_size; /**< bloom filter field size */
+ char* sender; /**< uniqe name of the sender */
};
static dbus_bool_t
return TRUE;
}
-static dbus_bool_t reply_with_error(char* error_type, const char* template, const char* object, DBusMessage *message, DBusConnection* connection)
+static int reply_with_error(char* error_type, const char* template, const char* object, DBusMessage *message, DBusConnection* connection)
{
DBusMessage *errMessage;
char* error_msg = "";
errMessage = generate_local_error_message(dbus_message_get_serial(message), error_type, error_msg);
if(errMessage == NULL)
- return FALSE;
+ return -1;
if (add_message_to_received(errMessage, connection))
- return TRUE;
+ return 0;
- return FALSE;
+ return -1;
}
-static dbus_bool_t reply_1_data(DBusMessage *message, int data_type, void* pData, DBusConnection* connection)
+static int reply_1_data(DBusMessage *message, int data_type, void* pData, DBusConnection* connection)
{
DBusMessageIter args;
DBusMessage *reply;
reply = dbus_message_new_method_return(message);
if(reply == NULL)
- return FALSE;
+ return -1;
dbus_message_set_sender(reply, DBUS_SERVICE_DBUS);
dbus_message_iter_init_append(reply, &args);
if (!dbus_message_iter_append_basic(&args, data_type, pData))
{
dbus_message_unref(reply);
- return FALSE;
+ return -1;
}
if(add_message_to_received(reply, connection))
- return TRUE;
+ return 0;
- return FALSE;
+ return -1;
}
+/*
+static int reply_ack(DBusMessage *message, DBusConnection* connection)
+{
+ DBusMessage *reply;
+
+ reply = dbus_message_new_method_return(message);
+ if(reply == NULL)
+ return -1;
+ if(add_message_to_received(reply, connection))
+ return 0;
+ return -1;
+}*/
+
/**
* Retrieves file descriptor to memory pool from kdbus module.
* It is then used for bulk data sending.
if(body_size)
{
_dbus_verbose("body attaching\n");
+ item = KDBUS_PART_NEXT(item);
MSG_ITEM_BUILD_VEC(_dbus_string_get_const_data(body), body_size);
}
}
item = KDBUS_PART_NEXT(item);
item->type = KDBUS_MSG_DST_NAME;
item->size = KDBUS_PART_HEADER_SIZE + strlen(name) + 1;
- strcpy(item->str, name);
+ memcpy(item->str, name, item->size - KDBUS_PART_HEADER_SIZE);
}
else if (dst_id == KDBUS_DST_ID_BROADCAST)
{
{
if(errno == EINTR)
goto again;
- if((errno == ESRCH) || (errno == ENXIO) || (errno = EADDRNOTAVAIL)) //when recipient is not available on the bus
+ else if(errno == ENXIO) //no such id on the bus
+ {
+ if(!reply_with_error(DBUS_ERROR_NAME_HAS_NO_OWNER, "Name \"%s\" does not exist", dbus_message_get_destination(message), message, transport->base.connection))
+ goto out;
+ }
+ else if((errno == ESRCH) || (errno = EADDRNOTAVAIL)) //when well known name is not available on the bus
{
if(autostart)
{
- //todo start service here, otherwise
- if(reply_with_error(DBUS_ERROR_SERVICE_UNKNOWN, "The name %s was not provided by any .service files", dbus_message_get_destination(message), message, transport->base.connection))
+ if(!reply_with_error(DBUS_ERROR_SERVICE_UNKNOWN, "The name %s was not provided by any .service files", dbus_message_get_destination(message), message, transport->base.connection))
goto out;
}
else
- if(reply_with_error(DBUS_ERROR_NAME_HAS_NO_OWNER, "Name \"%s\" does not exist", dbus_message_get_destination(message), message, transport->base.connection))
- goto out;
-
+ if(!reply_with_error(DBUS_ERROR_NAME_HAS_NO_OWNER, "Name \"%s\" does not exist", dbus_message_get_destination(message), message, transport->base.connection))
+ goto out;
}
_dbus_verbose("kdbus error sending message: err %d (%m)\n", errno);
ret_size = -1;
return ret_size;
}
-struct nameInfo
-{
- __u64 uniqueId;
- __u64 userId;
- __u64 processId;
- __u32 sec_label_len;
- char *sec_label;
-};
-
/**
* Performs kdbus query of id of the given name
*
* @param ownerID place to store id of the name
* @return 0 on success, -errno if failed
*/
-static int kdbus_NameQuery(char* name, int fd, struct nameInfo* pInfo)
+int kdbus_NameQuery(const char* name, DBusTransport* transport, struct nameInfo* pInfo)
{
struct kdbus_cmd_name_info *msg;
struct kdbus_item *item;
item = msg->items;
item->type = KDBUS_NAME_INFO_ITEM_NAME;
item->size = item_size;
- strcpy(item->str, name);
+ memcpy(item->str, name, strlen(name) + 1);
again:
- ret = ioctl(fd, KDBUS_CMD_NAME_QUERY, msg);
+ ret = ioctl(((DBusTransportSocket*)transport)->fd, KDBUS_CMD_NAME_QUERY, msg);
if (ret < 0)
{
if(errno == EINTR)
goto again;
+ if(errno == EAGAIN)
+ goto again;
else if(ret == -ENOBUFS)
{
msg = realloc(msg, msg->size); //prepare memory
pInfo->uniqueId = msg->id;
pInfo->userId = msg->creds.uid;
pInfo->processId = msg->creds.pid;
-_dbus_verbose ("I'm alive 1\n");
item = msg->items;
while((uint8_t *)(item) < (uint8_t *)(msg) + msg->size)
{
if(item->type == KDBUS_NAME_INFO_ITEM_SECLABEL)
{
- pInfo->sec_label_len = item->size - KDBUS_PART_HEADER_SIZE - 1;
+ pInfo->sec_label_len = item->size - KDBUS_PART_HEADER_SIZE - 1;
if(pInfo->sec_label_len != 0)
+ {
pInfo->sec_label = malloc(pInfo->sec_label_len);
- if(pInfo->sec_label == NULL)
- ret = -1;
- else
- memcpy(pInfo->sec_label, item->data, pInfo->sec_label_len);
-
+ if(pInfo->sec_label == NULL)
+ ret = -1;
+ else
+ memcpy(pInfo->sec_label, item->data, pInfo->sec_label_len);
+ }
break;
}
item = KDBUS_PART_NEXT(item);
}
/**
- * Handles messages sent to bus daemon - "org.freedesktop.DBus" and translates them to appropriate
- * kdbus ioctl commands. Than translate kdbus reply into dbus message and put it into recived messages queue.
- *
- * !!! Not all methods are handled !!! Doubt if it is even possible.
- * If method is not handled, returns error reply org.freedesktop.DBus.Error.UnknownMethod
- *
- * Handled methods:
- * - GetNameOwner
- * - NameHasOwner
- * - ListNames
+ * Kdbus part of dbus_bus_register.
+ * Shouldn't be used separately because it needs to be surrounded
+ * by other functions as it is done in dbus_bus_register.
*
- * Not handled methods:
- * - ListActivatableNames
- * - StartServiceByName
- * - UpdateActivationEnvironment
- * - GetConnectionUnixUser
- * - GetId
+ * @param name place to store unique name given by bus
+ * @param connection the connection
+ * @param error place to store errors
+ * @returns #TRUE on success
*/
-static dbus_bool_t emulateOrgFreedesktopDBus(DBusTransport *transport, DBusMessage *message)
+static dbus_bool_t bus_register_kdbus(char* name, DBusTransportSocket* transportS)
{
- int inter_ret;
- struct nameInfo info;
- dbus_bool_t ret_value;
-
- if(!strcmp(dbus_message_get_member(message), "GetNameOwner")) //returns id of the well known name
- {
- char* name = NULL;
+ struct kdbus_cmd_hello __attribute__ ((__aligned__(8))) hello;
- dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
- inter_ret = kdbus_NameQuery(name, ((DBusTransportSocket*)transport)->fd, &info);
- if(inter_ret == 0) //unique id of the name
- {
- char unique_name[(unsigned int)(snprintf(name, 0, "%llu", ULLONG_MAX) + sizeof(":1."))];
- const char* pString = unique_name;
+ hello.conn_flags = KDBUS_HELLO_ACCEPT_FD/* |
+ KDBUS_HELLO_ATTACH_COMM |
+ KDBUS_HELLO_ATTACH_EXE |
+ KDBUS_HELLO_ATTACH_CMDLINE |
+ KDBUS_HELLO_ATTACH_CAPS |
+ KDBUS_HELLO_ATTACH_CGROUP |
+ KDBUS_HELLO_ATTACH_SECLABEL |
+ KDBUS_HELLO_ATTACH_AUDIT*/;
+ hello.size = sizeof(struct kdbus_cmd_hello);
+ hello.pool_size = RECEIVE_POOL_SIZE;
- sprintf(unique_name, ":1.%llu", (unsigned long long int)info.uniqueId);
- _dbus_verbose("Unique name discovered:%s\n", unique_name);
- ret_value = reply_1_data(message, DBUS_TYPE_STRING, &pString, transport->connection);
- }
- else if(inter_ret == -ENOENT) //name has no owner
- return reply_with_error(DBUS_ERROR_NAME_HAS_NO_OWNER, "Could not get owner of name '%s': no such name", name, message, transport->connection);
- else
- {
- _dbus_verbose("kdbus error sending name query: err %d (%m)\n", errno);
- ret_value = reply_with_error(DBUS_ERROR_FAILED, "Could not determine unique name for '%s'", name, message, transport->connection);
- }
- }
- else if(!strcmp(dbus_message_get_member(message), "NameHasOwner")) //returns if name is currently registered on the bus
+ if (ioctl(transportS->fd, KDBUS_CMD_HELLO, &hello))
{
- char* name = NULL;
- dbus_bool_t result;
-
- dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
- inter_ret = kdbus_NameQuery(name, ((DBusTransportSocket*)transport)->fd, &info);
- if((inter_ret == 0) || (inter_ret == -ENOENT))
- {
- result = (inter_ret == 0) ? TRUE : FALSE;
- ret_value = reply_1_data(message, DBUS_TYPE_BOOLEAN, &result, transport->connection);
- }
- else
- {
- _dbus_verbose("kdbus error checking if name exists: err %d (%m)\n", errno);
- ret_value = reply_with_error(DBUS_ERROR_FAILED, "Could not determine whether name '%s' exists", name, message, transport->connection);
- }
+ _dbus_verbose ("Failed to send hello: %m, %d",errno);
+ return FALSE;
}
- else if(!strcmp(dbus_message_get_member(message), "GetConnectionUnixUser"))
- {
- char* name = NULL;
- dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
- inter_ret = kdbus_NameQuery(name, ((DBusTransportSocket*)transport)->fd, &info);
- if(inter_ret == 0) //name found
- {
- _dbus_verbose("User id:%llu\n", (unsigned long long) info.userId);
- ret_value = reply_1_data(message, DBUS_TYPE_UINT32, &info.userId, transport->connection);
- }
- else if(inter_ret == -ENOENT) //name has no owner
- return reply_with_error(DBUS_ERROR_NAME_HAS_NO_OWNER, "Could not get UID of name '%s': no such name", name, message, transport->connection);
- else
- {
- _dbus_verbose("kdbus error determining UID: err %d (%m)\n", errno);
- ret_value = reply_with_error(DBUS_ERROR_FAILED, "Could not determine UID for '%s'", name, message, transport->connection);
- }
- }
- else if(!strcmp(dbus_message_get_member(message), "GetConnectionUnixProcessID"))
- {
- char* name = NULL;
+ sprintf(name, "%llu", (unsigned long long)hello.id);
+ _dbus_verbose("-- Our peer ID is: %s\n", name);
+ transportS->bloom_size = hello.bloom_size;
- dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
- inter_ret = kdbus_NameQuery(name, ((DBusTransportSocket*)transport)->fd, &info);
- if(inter_ret == 0) //name found
- ret_value = reply_1_data(message, DBUS_TYPE_UINT32, &info.processId, transport->connection);
- else if(inter_ret == -ENOENT) //name has no owner
- return reply_with_error(DBUS_ERROR_NAME_HAS_NO_OWNER, "Could not get PID of name '%s': no such name", name, message, transport->connection);
- else
- {
- _dbus_verbose("kdbus error determining PID: err %d (%m)\n", errno);
- ret_value = reply_with_error(DBUS_ERROR_UNIX_PROCESS_ID_UNKNOWN,"Could not determine PID for '%s'", name, message, transport->connection);
- }
- }
- else if(!strcmp(dbus_message_get_member(message), "ListNames")) //return all well known names on he bus
+ transportS->kdbus_mmap_ptr = mmap(NULL, RECEIVE_POOL_SIZE, PROT_READ, MAP_SHARED, transportS->fd, 0);
+ if (transportS->kdbus_mmap_ptr == MAP_FAILED)
{
- struct kdbus_cmd_names* pCmd;
- uint64_t cmd_size;
+ _dbus_verbose("Error when mmap: %m, %d",errno);
+ return FALSE;
+ }
- cmd_size = sizeof(struct kdbus_cmd_names) + KDBUS_ITEM_SIZE(1);
- pCmd = malloc(cmd_size);
- if(pCmd == NULL)
- goto out;
- pCmd->size = cmd_size;
+ return TRUE;
+}
- again:
- cmd_size = 0;
- if(ioctl(((DBusTransportSocket*)transport)->fd, KDBUS_CMD_NAME_LIST, pCmd))
+/**
+ * Seeks key in rule string, and duplicates value of the key into pValue.
+ * If value is "org.freedesktop.DBus" it is indicated by returning -1, because it
+ * needs to be handled in different manner.
+ * Value is duplicated from rule string to newly allocated memory pointe by pValue,
+ * so it must be freed after use.
+ *
+ * @param rule rule to look through
+ * @param key key to look for
+ * @param pValue pointer to value of the key found
+ * @return length of the value string, 0 means not found, -1 means "org.freedesktop.DBus"
+ */
+static int parse_match_key(const char *rule, const char* key, char** pValue)
+{
+ const char* pBegin;
+ const char* pValueEnd;
+ int value_length = 0;
+
+ pBegin = strstr(rule, key);
+ if(pBegin)
+ {
+ pBegin += strlen(key);
+ pValueEnd = strchr(pBegin, '\'');
+ if(pValueEnd)
{
- if(errno == EINTR)
- goto again;
- if(errno == ENOBUFS) //buffer to small to put all names into it
- cmd_size = pCmd->size; //here kernel tells how much memory it needs
- else
+ value_length = pValueEnd - pBegin;
+ *pValue = strndup(pBegin, value_length);
+ if(*pValue)
{
- _dbus_verbose("kdbus error asking for name list: err %d (%m)\n",errno);
- goto out;
+ if(strcmp(*pValue, "org.freedesktop.DBus") == 0)
+ value_length = -1;
+ _dbus_verbose ("found for key: %s value:'%s'\n", key, *pValue);
}
}
- if(cmd_size) //kernel needs more memory
- {
- pCmd = realloc(pCmd, cmd_size); //prepare memory
- if(pCmd == NULL)
- return FALSE;
- goto again; //and try again
- }
- else
- {
- DBusMessage *reply;
- DBusMessageIter args;
- struct kdbus_cmd_name* pCmd_name;
- char* pName;
+ }
+ return value_length;
+}
- reply = dbus_message_new_method_return(message);
- if(reply == NULL)
- goto out;
- dbus_message_set_sender(reply, DBUS_SERVICE_DBUS);
- dbus_message_iter_init_append(reply, &args);
+/**
+ * Adds a match rule to match broadcast messages going through the message bus.
+ * Do no affect messages addressed directly.
+ *
+ * The "rule" argument is the string form of a match rule.
+ *
+ * In kdbus function do not blocks.
+ *
+ * Upper function returns nothing because of blocking issues
+ * so there is no point to return true or false here.
+ *
+ * Only part of the dbus's matching capabilities is implemented in kdbus now, because of different mechanism.
+ * Current mapping:
+ * interface match key mapped to bloom
+ * sender match key mapped to src_name
+ * also handled org.freedesktop.dbus members: NameOwnerChanged, NameLost, NameAcquired
+ *
+ * @param connection connection to the message bus
+ * @param rule textual form of match rule
+ * @param error location to store any errors - may be NULL
+ */
+dbus_bool_t add_match_kdbus (DBusTransport* transport, __u64 id, const char *rule)
+{
+ struct kdbus_cmd_match* pCmd_match;
+ struct kdbus_item *pItem;
+ __u64 src_id = KDBUS_MATCH_SRC_ID_ANY;
+ uint64_t size;
+ unsigned int kernel_item = 0;
+ int name_size;
+ char* pName = NULL;
+ char* pInterface = NULL;
+ dbus_bool_t ret_value = FALSE;
+ DBusTransportSocket* transportS = (DBusTransportSocket*)transport;
- for (pCmd_name = pCmd->names; (uint8_t *)(pCmd_name) < (uint8_t *)(pCmd) + pCmd->size; pCmd_name = KDBUS_PART_NEXT(pCmd_name))
- {
- pName = pCmd_name->name;
- if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING, &pName))
- {
- dbus_message_unref(reply);
- goto out;
- }
- }
+ /*parsing rule and calculating size of command*/
+ size = sizeof(struct kdbus_cmd_match);
- if(add_message_to_received(reply, transport->connection))
- {
- free(pCmd);
- return TRUE;
- }
- }
-out:
- if(pCmd)
- free(pCmd);
- return FALSE;
+ if(strstr(rule, "member='NameOwnerChanged'"))
+ {
+ kernel_item = ~0;
+ size += KDBUS_ITEM_SIZE(1)*3 + KDBUS_ITEM_SIZE(sizeof(__u64))*2; /*std DBus: 3 name related items plus 2 id related items*/
}
- else if(!strcmp(dbus_message_get_member(message), "GetId"))
+ else if(strstr(rule, "member='NameChanged'"))
{
- char* path;
+ kernel_item = KDBUS_MATCH_NAME_CHANGE;
+ size += KDBUS_ITEM_SIZE(1);
+ }
+ else if(strstr(rule, "member='NameLost'"))
+ {
+ kernel_item = KDBUS_MATCH_NAME_REMOVE;
+ size += KDBUS_ITEM_SIZE(1);
+ }
+ else if(strstr(rule, "member='NameAcquired'"))
+ {
+ kernel_item = KDBUS_MATCH_NAME_ADD;
+ size += KDBUS_ITEM_SIZE(1);
+ }
+
+ name_size = parse_match_key(rule, "interface='", &pInterface);
+ if((name_size == -1) && (kernel_item == 0)) //means org.freedesktop.DBus without specified member
+ {
+ kernel_item = ~0;
+ size += KDBUS_ITEM_SIZE(1)*3 + KDBUS_ITEM_SIZE(sizeof(__u64))*2; /* 3 above name related items plus 2 id related items*/
+ }
+ else if(name_size > 0) /*actual size is not important for interface because bloom size is defined by bus*/
+ size += KDBUS_PART_HEADER_SIZE + transportS->bloom_size;
+
+ name_size = parse_match_key(rule, "sender='", &pName);
+ if((name_size == -1) && (kernel_item == 0)) //means org.freedesktop.DBus without specified name - same as interface few line above
+ {
+ kernel_item = ~0;
+ size += KDBUS_ITEM_SIZE(1)*3 + KDBUS_ITEM_SIZE(sizeof(__u64))*2; /* 3 above name related items plus 2 id related items*/
+ }
+ else if(name_size > 0)
+ {
+ if(!strncmp(pName, ":1.", 3)) /*if name is unique name it must be converted to unique id*/
+ {
+ src_id = strtoull(&pName[3], NULL, 10);
+ free(pName);
+ pName = NULL;
+ }
+ else
+ size += KDBUS_ITEM_SIZE(name_size + 1); //well known name
+ }
+
+ pCmd_match = alloca(size);
+ if(pCmd_match == NULL)
+ goto out;
+
+ pCmd_match->id = id;
+ pCmd_match->cookie = id;
+ pCmd_match->size = size;
+
+ pItem = pCmd_match->items;
+ if(kernel_item == ~0) //all signals from kernel
+ {
+ pCmd_match->src_id = 0;
+ pItem->type = KDBUS_MATCH_NAME_CHANGE;
+ pItem->size = KDBUS_PART_HEADER_SIZE + 1;
+ pItem = KDBUS_PART_NEXT(pItem);
+ pItem->type = KDBUS_MATCH_NAME_ADD;
+ pItem->size = KDBUS_PART_HEADER_SIZE + 1;
+ pItem = KDBUS_PART_NEXT(pItem);
+ pItem->type = KDBUS_MATCH_NAME_REMOVE;
+ pItem->size = KDBUS_PART_HEADER_SIZE + 1;
+ pItem = KDBUS_PART_NEXT(pItem);
+ pItem->type = KDBUS_MATCH_ID_ADD;
+ pItem->size = KDBUS_PART_HEADER_SIZE + sizeof(__u64);
+ pItem = KDBUS_PART_NEXT(pItem);
+ pItem->type = KDBUS_MATCH_ID_REMOVE;
+ pItem->size = KDBUS_PART_HEADER_SIZE + sizeof(__u64);
+ }
+ else if(kernel_item) //only one item
+ {
+ pCmd_match->src_id = 0;
+ pItem->type = kernel_item;
+ pItem->size = KDBUS_PART_HEADER_SIZE + 1;
+ }
+ else
+ {
+ pCmd_match->src_id = src_id;
+ if(pName)
+ {
+ pItem->type = KDBUS_MATCH_SRC_NAME;
+ pItem->size = KDBUS_PART_HEADER_SIZE + name_size + 1;
+ memcpy(pItem->str, pName, strlen(pName) + 1);
+ pItem = KDBUS_PART_NEXT(pItem);
+ }
+
+ if(pInterface)
+ {
+ pItem->type = KDBUS_MATCH_BLOOM;
+ pItem->size = KDBUS_PART_HEADER_SIZE + transportS->bloom_size;
+ strncpy(pItem->data, pInterface, transportS->bloom_size);
+ }
+ }
+
+ if(ioctl(transportS->fd, KDBUS_CMD_MATCH_ADD, pCmd_match))
+ _dbus_verbose("Failed adding match bus rule %s,\nerror: %d, %m\n", rule, errno);
+ else
+ {
+ _dbus_verbose("Added match bus rule %s for id:%llu\n", rule, (unsigned long long)id);
+ ret_value = TRUE;
+ }
+
+out:
+ if(pName)
+ free(pName);
+ if(pInterface)
+ free(pInterface);
+ return ret_value;
+}
+
+/**
+ * Opposing to dbus, in kdbus removes all match rules with given
+ * cookie, which now is equal to uniqe id.
+ *
+ * In kdbus this function will not block
+ *
+ * @param connection connection to the message bus
+ * @param error location to store any errors - may be NULL
+ */
+dbus_bool_t remove_match_kdbus (DBusTransport* transport, __u64 id)
+{
+ struct kdbus_cmd_match __attribute__ ((__aligned__(8))) cmd;
+ DBusTransportSocket* transportS = (DBusTransportSocket*) transport;
+
+ cmd.cookie = id;
+ cmd.id = id;
+ cmd.size = sizeof(struct kdbus_cmd_match);
+
+ if(ioctl(transportS->fd, KDBUS_CMD_MATCH_REMOVE, &cmd))
+ {
+ _dbus_verbose("Failed removing match rule for id: %llu; error: %d, %m\n", (unsigned long long)id, errno);
+ return FALSE;
+ }
+ else
+ {
+ _dbus_verbose("Match rule removed correctly.\n");
+ return TRUE;
+ }
+}
+
+/**
+ * Handles messages sent to bus daemon - "org.freedesktop.DBus" and translates them to appropriate
+ * kdbus ioctl commands. Than translate kdbus reply into dbus message and put it into recived messages queue.
+ *
+ * !!! Not all methods are handled !!! Doubt if it is even possible.
+ * If method is not handled, returns error reply org.freedesktop.DBus.Error.UnknownMethod
+ *
+ * Handled methods:
+ * - GetNameOwner
+ * - NameHasOwner
+ * - ListNames
+ *
+ * Not handled methods:
+ * - ListActivatableNames
+ * - StartServiceByName
+ * - UpdateActivationEnvironment
+ * - GetConnectionUnixUser
+ * - GetId
+ */
+static int emulateOrgFreedesktopDBus(DBusTransport *transport, DBusMessage *message)
+{
+#ifdef DBUS_SERVICES_IN_LIB
+ int inter_ret;
+ struct nameInfo info;
+#endif
+ int ret_value = -1;
+
+ if(!strcmp(dbus_message_get_member(message), "Hello"))
+ {
+ char* sender = NULL;
+ char* name = NULL;
+
+ name = malloc(snprintf(name, 0, "%llu", ULLONG_MAX) + 1);
+ if(name == NULL)
+ return -1;
+ if(!bus_register_kdbus(name, (DBusTransportSocket*)transport))
+ goto outH1;
+ if(!register_kdbus_policy(name, ((DBusTransportSocket*)transport)->fd))
+ goto outH1;
+
+ sender = malloc (strlen(name) + 4);
+ if(!sender)
+ goto outH1;
+ sprintf(sender, ":1.%s", name);
+ ((DBusTransportSocket*)transport)->sender = sender;
+
+ if(!reply_1_data(message, DBUS_TYPE_STRING, &name, transport->connection))
+ return 0; //todo why we cannot free name after sending reply, shouldn't we?
+ else
+ free(sender);
+
+ outH1:
+ free(name);
+ }
+#ifdef DBUS_SERVICES_IN_LIB
+ else if(!strcmp(dbus_message_get_member(message), "RequestName"))
+ {
+ char* name;
+ int flags;
+ int result;
+
+ if(!dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_UINT32, &flags, DBUS_TYPE_INVALID))
+ return -1;
+
+ if(!register_kdbus_policy(name, ((DBusTransportSocket*)transport)->fd))
+ return -1;
+
+ result = request_kdbus_name(((DBusTransportSocket*)transport)->fd, name, flags, 0);
+ if(result == -EPERM)
+ return reply_with_error(DBUS_ERROR_ACCESS_DENIED,
+ "Connection is not allowed to own the service \"%s\" due to security policies in the configuration file",
+ name, message, transport->connection);
+ else if(result < 0)
+ return reply_with_error(DBUS_ERROR_FAILED , "Name \"%s\" could not be acquired", name, message, transport->connection);
+ else
+ return reply_1_data(message, DBUS_TYPE_UINT32, &result, transport->connection);
+ }
+ else if(!strcmp(dbus_message_get_member(message), "AddMatch"))
+ {
+ char* rule;
+
+ if(!dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &rule, DBUS_TYPE_INVALID))
+ return -1;
+
+ if(!add_match_kdbus(transport, 0, rule))
+ return -1;
+
+ return reply_ack(message,transport->connection);
+ }
+ else if(!strcmp(dbus_message_get_member(message), "RemoveMatch"))
+ {
+ if(!remove_match_kdbus(transport, 0))
+ return -1;
+ return reply_ack(message, transport->connection);
+ }
+ else if(!strcmp(dbus_message_get_member(message), "GetNameOwner")) //returns id of the well known name
+ {
+ char* name = NULL;
+
+ dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
+ inter_ret = kdbus_NameQuery(name, transport, &info);
+ if(inter_ret == 0) //unique id of the name
+ {
+ char unique_name[(unsigned int)(snprintf(name, 0, "%llu", ULLONG_MAX) + sizeof(":1."))];
+ const char* pString = unique_name;
+
+ sprintf(unique_name, ":1.%llu", (unsigned long long int)info.uniqueId);
+ _dbus_verbose("Unique name discovered:%s\n", unique_name);
+ ret_value = reply_1_data(message, DBUS_TYPE_STRING, &pString, transport->connection);
+ }
+ else if(inter_ret == -ENOENT) //name has no owner
+ return reply_with_error(DBUS_ERROR_NAME_HAS_NO_OWNER, "Could not get owner of name '%s': no such name", name, message, transport->connection);
+ else
+ {
+ _dbus_verbose("kdbus error sending name query: err %d (%m)\n", errno);
+ ret_value = reply_with_error(DBUS_ERROR_FAILED, "Could not determine unique name for '%s'", name, message, transport->connection);
+ }
+ }
+ else if(!strcmp(dbus_message_get_member(message), "NameHasOwner")) //returns if name is currently registered on the bus
+ {
+ char* name = NULL;
+ dbus_bool_t result;
+
+ dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
+ inter_ret = kdbus_NameQuery(name, transport, &info);
+ if((inter_ret == 0) || (inter_ret == -ENOENT))
+ {
+ result = (inter_ret == 0) ? TRUE : FALSE;
+ ret_value = reply_1_data(message, DBUS_TYPE_BOOLEAN, &result, transport->connection);
+ }
+ else
+ {
+ _dbus_verbose("kdbus error checking if name exists: err %d (%m)\n", errno);
+ ret_value = reply_with_error(DBUS_ERROR_FAILED, "Could not determine whether name '%s' exists", name, message, transport->connection);
+ }
+ }
+ else if(!strcmp(dbus_message_get_member(message), "GetConnectionUnixUser"))
+ {
+ char* name = NULL;
+
+ dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
+ inter_ret = kdbus_NameQuery(name, transport, &info);
+ if(inter_ret == 0) //name found
+ {
+ _dbus_verbose("User id:%llu\n", (unsigned long long) info.userId);
+ ret_value = reply_1_data(message, DBUS_TYPE_UINT32, &info.userId, transport->connection);
+ }
+ else if(inter_ret == -ENOENT) //name has no owner
+ return reply_with_error(DBUS_ERROR_NAME_HAS_NO_OWNER, "Could not get UID of name '%s': no such name", name, message, transport->connection);
+ else
+ {
+ _dbus_verbose("kdbus error determining UID: err %d (%m)\n", errno);
+ ret_value = reply_with_error(DBUS_ERROR_FAILED, "Could not determine UID for '%s'", name, message, transport->connection);
+ }
+ }
+ else if(!strcmp(dbus_message_get_member(message), "GetConnectionUnixProcessID"))
+ {
+ char* name = NULL;
+
+ dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
+ inter_ret = kdbus_NameQuery(name, transport, &info);
+ if(inter_ret == 0) //name found
+ ret_value = reply_1_data(message, DBUS_TYPE_UINT32, &info.processId, transport->connection);
+ else if(inter_ret == -ENOENT) //name has no owner
+ return reply_with_error(DBUS_ERROR_NAME_HAS_NO_OWNER, "Could not get PID of name '%s': no such name", name, message, transport->connection);
+ else
+ {
+ _dbus_verbose("kdbus error determining PID: err %d (%m)\n", errno);
+ ret_value = reply_with_error(DBUS_ERROR_UNIX_PROCESS_ID_UNKNOWN,"Could not determine PID for '%s'", name, message, transport->connection);
+ }
+ }
+ else if(!strcmp(dbus_message_get_member(message), "ListNames")) //return all well known names on he bus
+ {
+ struct kdbus_cmd_names* pCmd;
+ uint64_t cmd_size;
+
+ cmd_size = sizeof(struct kdbus_cmd_names) + KDBUS_ITEM_SIZE(1);
+ pCmd = malloc(cmd_size);
+ if(pCmd == NULL)
+ goto out;
+ pCmd->size = cmd_size;
+
+ again:
+ cmd_size = 0;
+ if(ioctl(((DBusTransportSocket*)transport)->fd, KDBUS_CMD_NAME_LIST, pCmd))
+ {
+ if(errno == EINTR)
+ goto again;
+ if(errno == ENOBUFS) //buffer to small to put all names into it
+ cmd_size = pCmd->size; //here kernel tells how much memory it needs
+ else
+ {
+ _dbus_verbose("kdbus error asking for name list: err %d (%m)\n",errno);
+ goto out;
+ }
+ }
+ if(cmd_size) //kernel needs more memory
+ {
+ pCmd = realloc(pCmd, cmd_size); //prepare memory
+ if(pCmd == NULL)
+ return -1;
+ goto again; //and try again
+ }
+ else
+ {
+ DBusMessage *reply;
+ DBusMessageIter iter, sub;
+ struct kdbus_cmd_name* pCmd_name;
+ char* pName;
+
+ reply = dbus_message_new_method_return(message);
+ if(reply == NULL)
+ goto out;
+ dbus_message_set_sender(reply, DBUS_SERVICE_DBUS);
+ dbus_message_iter_init_append(reply, &iter);
+ if (!dbus_message_iter_open_container (&iter, DBUS_TYPE_ARRAY, DBUS_TYPE_STRING_AS_STRING, &sub))
+ {
+ dbus_message_unref(reply);
+ goto out;
+ }
+ for (pCmd_name = pCmd->names; (uint8_t *)(pCmd_name) < (uint8_t *)(pCmd) + pCmd->size; pCmd_name = KDBUS_PART_NEXT(pCmd_name))
+ {
+ pName = pCmd_name->name;
+ if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &pName))
+ {
+ dbus_message_unref(reply);
+ goto out;
+ }
+ }
+
+ if (!dbus_message_iter_close_container (&iter, &sub))
+ {
+ dbus_message_unref (reply);
+ goto out;
+ }
+
+ if(add_message_to_received(reply, transport->connection))
+ ret_value = 0;
+ }
+out:
+ if(pCmd)
+ free(pCmd);
+ return ret_value;
+ }
+ else if(!strcmp(dbus_message_get_member(message), "GetId"))
+ {
+ char* path;
char uuid[DBUS_UUID_LENGTH_BYTES];
struct stat stats;
MD5_CTX md5;
DBusString binary, encoded;
- ret_value = FALSE;
path = &transport->address[11]; //start of kdbus bus path
if(stat(path, &stats) < -1)
{
outgid:
return ret_value;
}
- else if(!strcmp(dbus_message_get_member(message), "GetAdtAuditSessionData"))
+#endif
+/* else if(!strcmp(dbus_message_get_member(message), "GetAdtAuditSessionData")) //todo to be implemented if needed and possible
{
char* name = NULL;
dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
return reply_with_error(DBUS_ERROR_ADT_AUDIT_DATA_UNKNOWN, "Could not determine audit session data for '%s'", name, message, transport->connection);
- }
+ }*/
+#ifdef DBUS_SERVICES_IN_LIB
else if(!strcmp(dbus_message_get_member(message), "GetConnectionSELinuxSecurityContext"))
{
char* name = NULL;
dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
- inter_ret = kdbus_NameQuery(name, ((DBusTransportSocket*)transport)->fd, &info);
+ inter_ret = kdbus_NameQuery(name, transport, &info);
if(inter_ret == -ENOENT) //name has no owner
return reply_with_error(DBUS_ERROR_NAME_HAS_NO_OWNER, "Could not get security context of name '%s': no such name", name, message, transport->connection);
else if(inter_ret < 0)
{
DBusMessage *reply;
- ret_value = FALSE;
reply = dbus_message_new_method_return(message);
if(reply != NULL)
{
if (!dbus_message_append_args (reply, DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &info.sec_label, info.sec_label_len, DBUS_TYPE_INVALID))
dbus_message_unref(reply);
else if(add_message_to_received(reply, transport->connection))
- ret_value = TRUE;
+ ret_value = 0;
}
}
}
+#endif
else
- return reply_with_error(DBUS_ERROR_UNKNOWN_METHOD, NULL, (char*)dbus_message_get_member(message), message, transport->connection);
-/* else if(!strcmp(dbus_message_get_member(message), "ListActivatableNames")) //todo
- {
-
- }
- else if(!strcmp(dbus_message_get_member(message), "StartServiceByName"))
- {
-
- }
- else if(!strcmp(dbus_message_get_member(message), "UpdateActivationEnvironment"))
- {
-
- }
- else if(!strcmp(dbus_message_get_member(message), "ReloadConfig"))
- {
-
- }
- */
+ return 1; //send to daemon
+#ifdef DBUS_SERVICES_IN_LIB
if(info.sec_label)
free(info.sec_label);
+#endif
return ret_value;
}
const DBusString *body;
int size;
+ dbus_message_set_serial(message, 1);
dbus_message_lock (message);
_dbus_message_get_network_data (message, &header, &body);
ret_size = _dbus_string_get_length(header);
size = _dbus_string_get_length(body);
memcpy(data, _dbus_string_get_const_data(body), size);
ret_size += size;
- dbus_message_unref(message);
return ret_size;
}
_dbus_transport_ref (transport);
#ifdef DBUS_AUTHENTICATION
- if (_dbus_transport_get_is_authenticated (transport))
+ if (_dbus_transport_try_to_authenticate (transport))
#endif
needed = _dbus_connection_has_messages_to_send_unlocked (transport->connection);
#ifdef DBUS_AUTHENTICATION
_dbus_transport_ref (transport);
#ifdef DBUS_AUTHENTICATION
- if (_dbus_transport_get_is_authenticated (transport))
+ if (_dbus_transport_try_to_authenticate (transport))
#endif
need_read_watch =
(_dbus_counter_get_size_value (transport->live_messages) < transport->max_live_messages_size) &&
DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
DBusString *buffer;
int bytes_read;
+ int *fds, n_fds;
*oom = FALSE;
_dbus_auth_get_buffer (transport->auth, &buffer);
- bytes_read = kdbus_read_message(socket_transport, buffer);
+ bytes_read = kdbus_read_message(socket_transport, buffer, fds, &n_fds);
_dbus_auth_return_buffer (transport->auth, buffer,
bytes_read > 0 ? bytes_read : 0);
}
}
+static int kdbus_send_auth (DBusTransport *transport, const DBusString *buffer)
+{
+ int len;
+ int bytes_written = -1;
+ struct kdbus_msg *msg;
+ struct kdbus_item *item;
+
+ len = _dbus_string_get_length (buffer);
+// data = _dbus_string_get_const_data_len (buffer, 0, len);
+
+ msg = kdbus_init_msg(NULL, 1, 0, FALSE, 0, (DBusTransportSocket*)transport);
+ item = msg->items;
+ MSG_ITEM_BUILD_VEC(_dbus_string_get_const_data_len (buffer, 0, len), len);
+
+ again:
+ if(ioctl(((DBusTransportSocket*)transport)->fd, KDBUS_CMD_MSG_SEND, msg))
+ {
+ if(errno == EINTR)
+ goto again;
+ _dbus_verbose ("Error writing auth: %d, %m\n", errno);
+ }
+ else
+ bytes_written = len;
+
+ return bytes_written;
+}
+
/* Return value is whether we successfully wrote any bytes */
static dbus_bool_t
write_data_from_auth (DBusTransport *transport)
{
- DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
+// DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
int bytes_written;
const DBusString *buffer;
&buffer))
return FALSE;
- bytes_written = _dbus_write_socket (socket_transport->fd,
- buffer,
- 0, _dbus_string_get_length (buffer));
+ bytes_written = kdbus_send_auth (transport, buffer);
if (bytes_written > 0)
{
oom = FALSE;
- orig_auth_state = _dbus_transport_get_is_authenticated (transport);
+ orig_auth_state = _dbus_transport_try_to_authenticate (transport);
/* This is essential to avoid the check_write_watch() at the end,
* we don't want to add a write watch in do_iteration before
_dbus_transport_ref (transport);
- while (!_dbus_transport_get_is_authenticated (transport) &&
+ while (!_dbus_transport_try_to_authenticate (transport) &&
_dbus_transport_get_is_connected (transport))
{
if (!exchange_credentials (transport, do_reading, do_writing))
out:
if (auth_completed)
- *auth_completed = (orig_auth_state != _dbus_transport_get_is_authenticated (transport));
+ *auth_completed = (orig_auth_state != _dbus_transport_try_to_authenticate (transport));
check_read_watch (transport);
check_write_watch (transport);
#ifdef DBUS_AUTHENTICATION
/* No messages without authentication! */
- if (!_dbus_transport_get_is_authenticated (transport))
+ if (!_dbus_transport_try_to_authenticate (transport))
{
_dbus_verbose ("Not authenticated, not writing anything\n");
return TRUE;
message = _dbus_connection_get_message_to_send (transport->connection);
_dbus_assert (message != NULL);
- dbus_message_lock (message);
+ if(dbus_message_get_sender(message) == NULL) //needed for daemon
+ {
+ dbus_message_unlock(message);
+ dbus_message_set_sender(message, socket_transport->sender);
+ dbus_message_lock (message);
+ }
_dbus_message_get_network_data (message, &header, &body);
total_bytes_to_write = _dbus_string_get_length(header) + _dbus_string_get_length(body);
pDestination = dbus_message_get_destination(message);
{
if(!strcmp(pDestination, "org.freedesktop.DBus"))
{
- if(emulateOrgFreedesktopDBus(transport, message))
- bytes_written = total_bytes_to_write;
- else
- bytes_written = -1;
- goto written;
+ if(!strcmp(dbus_message_get_interface(message), DBUS_INTERFACE_DBUS))
+ {
+ int ret;
+
+ ret = emulateOrgFreedesktopDBus(transport, message);
+ if(ret < 0)
+ {
+ bytes_written = -1;
+ goto written;
+ }
+ else if(ret == 0)
+ {
+ bytes_written = total_bytes_to_write;
+ goto written;
+ }
+ //else send to "daemon" as to normal recipient
+ }
}
}
if (_dbus_auth_needs_encoding (transport->auth))
#ifdef DBUS_AUTHENTICATION
/* No messages without authentication! */
- if (!_dbus_transport_get_is_authenticated (transport))
+ if (!_dbus_transport_try_to_authenticate (transport))
return TRUE;
#endif
}
static dbus_bool_t
-socket_connection_set (DBusTransport *transport)
+kdbus_connection_set (DBusTransport *transport)
{
DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
+ dbus_connection_set_is_authenticated(transport->connection); //now we don't have authentication in kdbus
+
_dbus_watch_set_handler (socket_transport->write_watch,
_dbus_connection_handle_watch,
transport->connection, NULL);
return TRUE;
}
-/**
+/** original dbus copy-pasted
* @todo We need to have a way to wake up the select sleep if
* a new iteration request comes in with a flag (read/write) that
* we're not currently serving. Otherwise a call that just reads
poll_fd.fd = socket_transport->fd;
poll_fd.events = 0;
- if (_dbus_transport_get_is_authenticated (transport))
+ if (_dbus_transport_try_to_authenticate (transport))
{
/* This is kind of a hack; if we have stuff to write, then try
* to avoid the poll. This is probably about a 5% speedup on an
socket_finalize,
socket_handle_watch,
socket_disconnect,
- socket_connection_set,
+ kdbus_connection_set,
kdbus_do_iteration,
socket_live_messages_changed,
socket_get_socket_fd
*
* @param path the path to UNIX domain socket
* @param error return location for error code
- * @returns connection file descriptor or -1 on error
- */
-static int _dbus_connect_kdbus (const char *path, DBusError *error)
-{
- int fd;
-
- _DBUS_ASSERT_ERROR_IS_CLEAR (error);
- _dbus_verbose ("connecting to kdbus bus %s\n", path);
-
- fd = open(path, O_RDWR|O_CLOEXEC|O_NONBLOCK);
- if (fd < 0)
- dbus_set_error(error, _dbus_error_from_errno (errno), "Failed to open file descriptor: %s", _dbus_strerror (errno));
-
- return fd;
-}
-
-/**
- * maps memory pool for messages received by the kdbus transport
- *
- * @param transport transport
- * @returns #TRUE on success, otherwise FALSE
- */
-static dbus_bool_t kdbus_mmap(DBusTransport* transport)
-{
- DBusTransportSocket *socket_transport = (DBusTransportSocket*) transport;
-
- socket_transport->kdbus_mmap_ptr = mmap(NULL, RECEIVE_POOL_SIZE, PROT_READ, MAP_SHARED, socket_transport->fd, 0);
- if (socket_transport->kdbus_mmap_ptr == MAP_FAILED)
- return FALSE;
-
- return TRUE;
-}
-
-/**
- * Creates a new transport for kdbus.
- * This creates a client-side of a transport.
- *
- * @param path the path to the bus.
- * @param error address where an error can be returned.
- * @returns a new transport, or #NULL on failure.
- */
-static DBusTransport* _dbus_transport_new_for_kdbus (const char *path, DBusError *error)
-{
- int fd;
- DBusTransport *transport;
- DBusString address;
-
- _DBUS_ASSERT_ERROR_IS_CLEAR (error);
-
- if (!_dbus_string_init (&address))
- {
- dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
- return NULL;
- }
-
- fd = -1;
-
- if ((!_dbus_string_append (&address, "kdbus:path=")) || (!_dbus_string_append (&address, path)))
- {
- dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
- goto failed_0;
- }
-
- fd = _dbus_connect_kdbus (path, error);
- if (fd < 0)
- {
- _DBUS_ASSERT_ERROR_IS_SET (error);
- goto failed_0;
- }
-
- _dbus_verbose ("Successfully connected to kdbus bus %s\n", path);
-
- transport = _dbus_transport_new_for_socket_kdbus (fd, &address);
- if (transport == NULL)
- {
- dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
- goto failed_1;
- }
-
- _dbus_string_free (&address);
-
- return transport;
-
- failed_1:
- _dbus_close_socket (fd, NULL);
- failed_0:
- _dbus_string_free (&address);
- return NULL;
-}
-
-
-/**
- * Opens kdbus transport if method from address entry is kdbus
- *
- * @param entry the address entry to try opening
- * @param transport_p return location for the opened transport
- * @param error error to be set
- * @returns result of the attempt
- */
-DBusTransportOpenResult _dbus_transport_open_kdbus(DBusAddressEntry *entry,
- DBusTransport **transport_p,
- DBusError *error)
-{
- const char *method;
-
- method = dbus_address_entry_get_method (entry);
- _dbus_assert (method != NULL);
-
- if (strcmp (method, "kdbus") == 0)
- {
- const char *path = dbus_address_entry_get_value (entry, "path");
-
- if (path == NULL)
- {
- _dbus_set_bad_address (error, "kdbus", "path", NULL);
- return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
- }
-
- *transport_p = _dbus_transport_new_for_kdbus (path, error);
-
- if (*transport_p == NULL)
- {
- _DBUS_ASSERT_ERROR_IS_SET (error);
- return DBUS_TRANSPORT_OPEN_DID_NOT_CONNECT;
- }
- else
- {
- _DBUS_ASSERT_ERROR_IS_CLEAR (error);
- return DBUS_TRANSPORT_OPEN_OK;
- }
- }
- else
- {
- _DBUS_ASSERT_ERROR_IS_CLEAR (error);
- return DBUS_TRANSPORT_OPEN_NOT_HANDLED;
- }
-}
-
-static struct kdbus_policy *make_policy_name(const char *name)
-{
- struct kdbus_policy *p;
- __u64 size;
-
- size = offsetof(struct kdbus_policy, name) + strlen(name) + 1;
- p = malloc(size);
- if (!p)
- return NULL;
- memset(p, 0, size);
- p->size = size;
- p->type = KDBUS_POLICY_NAME;
- strcpy(p->name, name);
-
- return p;
-}
-
-static struct kdbus_policy *make_policy_access(__u64 type, __u64 bits, __u64 id)
-{
- struct kdbus_policy *p;
- __u64 size = sizeof(*p);
-
- p = malloc(size);
- if (!p)
- return NULL;
-
- memset(p, 0, size);
- p->size = size;
- p->type = KDBUS_POLICY_ACCESS;
- p->access.type = type;
- p->access.bits = bits;
- p->access.id = id;
-
- return p;
-}
-
-static void append_policy(struct kdbus_cmd_policy *cmd_policy, struct kdbus_policy *policy, __u64 max_size)
-{
- struct kdbus_policy *dst = (struct kdbus_policy *) ((char *) cmd_policy + cmd_policy->size);
-
- if (cmd_policy->size + policy->size > max_size)
- return;
-
- memcpy(dst, policy, policy->size);
- cmd_policy->size += KDBUS_ALIGN8(policy->size);
- free(policy);
-}
-
-/**
- * Registers kdbus policy for given connection.
- *
- * Policy sets rights of the name (unique or well known) on the bus. Without policy it is
- * not possible to send or receive messages. It must be set separately for unique id and
- * well known name of the connection. It is set after registering on the bus, but before
- * requesting for name. The policy is valid for the given name, not for the connection.
- *
- * Name of the policy equals name on the bus.
- *
- * @param name name of the policy = name of the connection
- * @param connection the connection
- * @param error place to store errors
- *
- * @returns #TRUE on success
- */
-dbus_bool_t bus_register_policy_kdbus(const char* name, DBusConnection *connection, DBusError *error)
-{
- struct kdbus_cmd_policy *cmd_policy;
- struct kdbus_policy *policy;
- int size = 0xffff;
- int fd;
-
- if(!dbus_connection_get_socket(connection, &fd))
- {
- dbus_set_error (error, "Failed to get fd for registering policy", NULL);
- return FALSE;
- }
-
- cmd_policy = alloca(size);
- memset(cmd_policy, 0, size);
-
- policy = (struct kdbus_policy *) cmd_policy->policies;
- cmd_policy->size = offsetof(struct kdbus_cmd_policy, policies);
-
- policy = make_policy_name(name);
- append_policy(cmd_policy, policy, size);
-
- policy = make_policy_access(KDBUS_POLICY_ACCESS_USER, KDBUS_POLICY_OWN, getuid());
- append_policy(cmd_policy, policy, size);
-
- policy = make_policy_access(KDBUS_POLICY_ACCESS_WORLD, KDBUS_POLICY_RECV, 0);
- append_policy(cmd_policy, policy, size);
-
- policy = make_policy_access(KDBUS_POLICY_ACCESS_WORLD, KDBUS_POLICY_SEND, 0);
- append_policy(cmd_policy, policy, size);
-
- if (ioctl(fd, KDBUS_CMD_EP_POLICY_SET, cmd_policy) < 0)
- {
- dbus_set_error(error,_dbus_error_from_errno (errno), "Error setting EP policy: %s", _dbus_strerror (errno));
- return FALSE;
- }
-
- _dbus_verbose("Policy %s set correctly\n", name);
- return TRUE;
-}
-
-/**
- * Kdbus part of dbus_bus_register.
- * Shouldn't be used separately because it needs to be surrounded
- * by other functions as it is done in dbus_bus_register.
- *
- * @param name place to store unique name given by bus
- * @param connection the connection
- * @param error place to store errors
- * @returns #TRUE on success
- */
-dbus_bool_t bus_register_kdbus(char* name, DBusConnection *connection, DBusError *error)
-{
- struct kdbus_cmd_hello __attribute__ ((__aligned__(8))) hello;
- int fd;
-
- hello.conn_flags = KDBUS_HELLO_ACCEPT_FD/* |
- KDBUS_HELLO_ATTACH_COMM |
- KDBUS_HELLO_ATTACH_EXE |
- KDBUS_HELLO_ATTACH_CMDLINE |
- KDBUS_HELLO_ATTACH_CAPS |
- KDBUS_HELLO_ATTACH_CGROUP |
- KDBUS_HELLO_ATTACH_SECLABEL |
- KDBUS_HELLO_ATTACH_AUDIT*/;
- hello.size = sizeof(struct kdbus_cmd_hello);
- hello.pool_size = RECEIVE_POOL_SIZE;
-
- if(!dbus_connection_get_socket(connection, &fd))
- {
- dbus_set_error (error, "failed to get fd for bus registration", NULL);
- return FALSE;
- }
- if (ioctl(fd, KDBUS_CMD_HELLO, &hello))
- {
- dbus_set_error(error,_dbus_error_from_errno (errno), "Failed to send hello: %s", _dbus_strerror (errno));
- return FALSE;
- }
-
- sprintf(name, "%llu", (unsigned long long)hello.id);
- _dbus_verbose("-- Our peer ID is: %s\n", name);
- ((DBusTransportSocket*)dbus_connection_get_transport(connection))->bloom_size = hello.bloom_size;
-
- if(!kdbus_mmap(dbus_connection_get_transport(connection)))
- {
- dbus_set_error(error,_dbus_error_from_errno (errno), "Error when mmap: %s", _dbus_strerror (errno));
- return FALSE;
- }
-
- return TRUE;
-}
-
-/**
- * kdbus version of dbus_bus_request_name.
- *
- * Asks the bus to assign the given name to this connection.
- *
- * Use same flags as original dbus version with one exception below.
- * Result flag #DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER is currently
- * never returned by kdbus, instead DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER
- * is returned by kdbus.
- *
- * @param connection the connection
- * @param name the name to request
- * @param flags flags
- * @param error location to store the error
- * @returns a result code, -1 if error is set
- */
-int bus_request_name_kdbus(DBusConnection *connection, const char *name, const uint64_t flags, DBusError *error)
-{
- struct kdbus_cmd_name *cmd_name;
- int fd;
- uint64_t size = sizeof(*cmd_name) + strlen(name) + 1;
- uint64_t flags_kdbus = 0;
-
- cmd_name = alloca(size);
-
- memset(cmd_name, 0, size);
- strcpy(cmd_name->name, name);
- cmd_name->size = size;
-
- if(flags & DBUS_NAME_FLAG_ALLOW_REPLACEMENT)
- flags_kdbus |= KDBUS_NAME_ALLOW_REPLACEMENT;
- if(!(flags & DBUS_NAME_FLAG_DO_NOT_QUEUE))
- flags_kdbus |= KDBUS_NAME_QUEUE;
- if(flags & DBUS_NAME_FLAG_REPLACE_EXISTING)
- flags_kdbus |= KDBUS_NAME_REPLACE_EXISTING;
-
- cmd_name->conn_flags = flags_kdbus;
-
- if(!dbus_connection_get_socket(connection, &fd))
- {
- dbus_set_error (error, "failed to get fd for name request", NULL);
- return -1;
- }
-
- _dbus_verbose("Request name - flags sent: 0x%llx !!!!!!!!!\n", cmd_name->conn_flags);
-
- _DBUS_ASSERT_ERROR_IS_CLEAR (error);
- if (ioctl(fd, KDBUS_CMD_NAME_ACQUIRE, cmd_name))
- {
- dbus_set_error(error,_dbus_error_from_errno (errno), "error acquiring name: %s", _dbus_strerror (errno));
- if(errno == EEXIST)
- return DBUS_REQUEST_NAME_REPLY_EXISTS;
- return -1;
- }
-
- _dbus_verbose("Request name - received flag: 0x%llx !!!!!!!!!\n", cmd_name->conn_flags);
-
- if(cmd_name->conn_flags & KDBUS_NAME_IN_QUEUE)
- return DBUS_REQUEST_NAME_REPLY_IN_QUEUE;
- else
- return DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER;
- /*todo now 1 code is never returned - DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER
- * because kdbus never returns it now
- */
-}
-
-/**
- * Checks if the connection's transport is kdbus on the basis of its address
- *
- * @param pointer to the connection
- * @returns TRUE if kdbus transport, otherwise FALSE
+ * @returns connection file descriptor or -1 on error
*/
-dbus_bool_t dbus_transport_is_kdbus(DBusConnection *connection)
+static int _dbus_connect_kdbus (const char *path, DBusError *error)
{
- const char* address = _dbus_connection_get_address(connection);
+ int fd;
- if(address)
- if(address == strstr(address, "kdbus:path="))
- return TRUE;
- return FALSE;
-}
+ _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+ _dbus_verbose ("connecting to kdbus bus %s\n", path);
-/**
- * Seeks key in rule string, and duplicates value of the key into pValue.
- * If value is "org.freedesktop.DBus" it is indicated by returning -1, because it
- * needs to be handled in different manner.
- * Value is duplicated from rule string to newly allocated memory pointe by pValue,
- * so it must be freed after use.
- *
- * @param rule rule to look through
- * @param key key to look for
- * @param pValue pointer to value of the key found
- * @return length of the value string, 0 means not found, -1 means "org.freedesktop.DBus"
- */
-static int parse_match_key(const char *rule, const char* key, char** pValue)
-{
- const char* pBegin;
- const char* pValueEnd;
- int value_length = 0;
+ fd = open(path, O_RDWR|O_CLOEXEC|O_NONBLOCK);
+ if (fd < 0)
+ dbus_set_error(error, _dbus_error_from_errno (errno), "Failed to open file descriptor: %s", _dbus_strerror (errno));
- pBegin = strstr(rule, key);
- if(pBegin)
- {
- pBegin += strlen(key);
- pValueEnd = strchr(pBegin, '\'');
- if(pValueEnd)
- {
- value_length = pValueEnd - pBegin;
- *pValue = strndup(pBegin, value_length);
- if(*pValue)
- {
- if(strcmp(*pValue, "org.freedesktop.DBus") == 0)
- value_length = -1;
- _dbus_verbose ("found for key: %s value:'%s'\n", key, *pValue);
- }
- }
- }
- return value_length;
+ return fd;
}
/**
- * Adds a match rule to match broadcast messages going through the message bus.
- * Do no affect messages addressed directly.
- *
- * The "rule" argument is the string form of a match rule.
- *
- * In kdbus function do not blocks.
- *
- * Upper function returns nothing because of blocking issues
- * so there is no point to return true or false here.
- *
- * Only part of the dbus's matching capabilities is implemented in kdbus now, because of different mechanism.
- * Current mapping:
- * interface match key mapped to bloom
- * sender match key mapped to src_name
- * also handled org.freedesktop.dbus members: NameOwnerChanged, NameLost, NameAcquired
+ * Creates a new transport for kdbus.
+ * This creates a client-side of a transport.
*
- * @param connection connection to the message bus
- * @param rule textual form of match rule
- * @param error location to store any errors - may be NULL
+ * @param path the path to the bus.
+ * @param error address where an error can be returned.
+ * @returns a new transport, or #NULL on failure.
*/
-void dbus_bus_add_match_kdbus (DBusConnection *connection, const char *rule, DBusError *error)
+static DBusTransport* _dbus_transport_new_for_kdbus (const char *path, DBusError *error)
{
- struct kdbus_cmd_match* pCmd_match;
- struct kdbus_item *pItem;
int fd;
- __u64 src_id = KDBUS_MATCH_SRC_ID_ANY;
- uint64_t size;
- unsigned int kernel_item = 0;
- int name_size;
- char* pName = NULL;
- char* pInterface = NULL;
- __u64 bloom_size = ((DBusTransportSocket*)dbus_connection_get_transport(connection))->bloom_size;
-
- dbus_connection_get_socket(connection, &fd);
+ DBusTransport *transport;
+ DBusString address;
- /*parsing rule and calculating size of command*/
- size = sizeof(struct kdbus_cmd_match);
+ _DBUS_ASSERT_ERROR_IS_CLEAR (error);
- if(strstr(rule, "member='NameOwnerChanged'"))
- {
- kernel_item = KDBUS_MATCH_NAME_CHANGE;
- size += KDBUS_ITEM_SIZE(1);
- }
- else if(strstr(rule, "member='NameLost'"))
- {
- kernel_item = KDBUS_MATCH_NAME_REMOVE;
- size += KDBUS_ITEM_SIZE(1);
- }
- else if(strstr(rule, "member='NameAcquired'"))
- {
- kernel_item = KDBUS_MATCH_NAME_ADD;
- size += KDBUS_ITEM_SIZE(1);
- }
+ if (!_dbus_string_init (&address))
+ {
+ dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
+ return NULL;
+ }
- name_size = parse_match_key(rule, "interface='", &pInterface);
- if((name_size == -1) && (kernel_item == 0)) //means org.freedesktop.DBus without specified member
- {
- kernel_item = ~0;
- size += KDBUS_ITEM_SIZE(1)*3 + KDBUS_ITEM_SIZE(sizeof(__u64))*2; /* 3 above name related items plus 2 id related items*/
- }
- else if(name_size > 0) /*actual size is not important for interface because bloom size is defined by bus*/
- size += KDBUS_PART_HEADER_SIZE + bloom_size;
+ fd = -1;
- name_size = parse_match_key(rule, "sender='", &pName);
- if((name_size == -1) && (kernel_item == 0)) //means org.freedesktop.DBus without specified name - same as interface few line above
- {
- kernel_item = ~0;
- size += KDBUS_ITEM_SIZE(1)*3 + KDBUS_ITEM_SIZE(sizeof(__u64))*2; /* 3 above name related items plus 2 id related items*/
- }
- else if(name_size > 0)
- {
- if(!strncmp(pName, ":1.", 3)) /*if name is unique name it must be converted to unique id*/
- {
- src_id = strtoull(&pName[3], NULL, 10);
- free(pName);
- pName = NULL;
- }
- else
- size += KDBUS_ITEM_SIZE(name_size + 1); //well known name
- }
+ if ((!_dbus_string_append (&address, "kdbus:path=")) || (!_dbus_string_append (&address, path)))
+ {
+ dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
+ goto failed_0;
+ }
- pCmd_match = alloca(size);
- if(pCmd_match == NULL)
- goto out;
+ fd = _dbus_connect_kdbus (path, error);
+ if (fd < 0)
+ {
+ _DBUS_ASSERT_ERROR_IS_SET (error);
+ goto failed_0;
+ }
- pCmd_match->id = 0;
- pCmd_match->size = size;
- pCmd_match->cookie = strtoull(dbus_bus_get_unique_name(connection), NULL , 10);
+ _dbus_verbose ("Successfully connected to kdbus bus %s\n", path);
- pItem = pCmd_match->items;
- if(kernel_item == ~0) //all signals from kernel
- {
- pCmd_match->src_id = 0;
- pItem->type = KDBUS_MATCH_NAME_CHANGE;
- pItem->size = KDBUS_PART_HEADER_SIZE + 1;
- pItem = KDBUS_PART_NEXT(pItem);
- pItem->type = KDBUS_MATCH_NAME_ADD;
- pItem->size = KDBUS_PART_HEADER_SIZE + 1;
- pItem = KDBUS_PART_NEXT(pItem);
- pItem->type = KDBUS_MATCH_NAME_REMOVE;
- pItem->size = KDBUS_PART_HEADER_SIZE + 1;
- pItem = KDBUS_PART_NEXT(pItem);
- pItem->type = KDBUS_MATCH_ID_ADD;
- pItem->size = KDBUS_PART_HEADER_SIZE + sizeof(__u64);
- pItem = KDBUS_PART_NEXT(pItem);
- pItem->type = KDBUS_MATCH_ID_REMOVE;
- pItem->size = KDBUS_PART_HEADER_SIZE + sizeof(__u64);
- }
- else if(kernel_item) //only one item
- {
- pCmd_match->src_id = 0;
- pItem->type = kernel_item;
- pItem->size = KDBUS_PART_HEADER_SIZE + 1;
- }
- else
- {
- pCmd_match->src_id = src_id;
- if(pName)
- {
- pItem->type = KDBUS_MATCH_SRC_NAME;
- pItem->size = KDBUS_PART_HEADER_SIZE + name_size + 1;
- strcpy(pItem->str, pName);
- pItem = KDBUS_PART_NEXT(pItem);
- }
+ transport = _dbus_transport_new_for_socket_kdbus (fd, &address);
+ if (transport == NULL)
+ {
+ dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
+ goto failed_1;
+ }
- if(pInterface)
- {
- pItem->type = KDBUS_MATCH_BLOOM;
- pItem->size = KDBUS_PART_HEADER_SIZE + bloom_size;
- strncpy(pItem->data, pInterface, bloom_size);
- }
- }
+ _dbus_string_free (&address);
- if(ioctl(fd, KDBUS_CMD_MATCH_ADD, pCmd_match))
- {
- if(error)
- dbus_set_error(error,_dbus_error_from_errno (errno), "error adding match: %s", _dbus_strerror (errno));
- _dbus_verbose("Failed adding match bus rule %s,\nerror: %d, %m\n", rule, errno);
- }
- else
- _dbus_verbose("Added match bus rule %s\n", rule);
+ return transport;
-out:
- if(pName)
- free(pName);
- if(pInterface)
- free(pInterface);
+ failed_1:
+ _dbus_close_socket (fd, NULL);
+ failed_0:
+ _dbus_string_free (&address);
+ return NULL;
}
+
/**
- * Opposing to dbus, in kdbus removes all match rules with given
- * cookie, which now is equal to uniqe id.
- *
- * In kdbus this function will not block
+ * Opens kdbus transport if method from address entry is kdbus
*
- * @param connection connection to the message bus
- * @param error location to store any errors - may be NULL
+ * @param entry the address entry to try opening
+ * @param transport_p return location for the opened transport
+ * @param error error to be set
+ * @returns result of the attempt
*/
-void dbus_bus_remove_match_kdbus (DBusConnection *connection, DBusError *error)
+DBusTransportOpenResult _dbus_transport_open_kdbus(DBusAddressEntry *entry,
+ DBusTransport **transport_p,
+ DBusError *error)
{
- struct kdbus_cmd_match __attribute__ ((__aligned__(8))) cmd;
- int fd;
+ const char *method;
- dbus_connection_get_socket(connection, &fd);
- cmd.cookie = strtoull(dbus_bus_get_unique_name(connection), NULL , 10);
- cmd.id = cmd.cookie;
- cmd.size = sizeof(struct kdbus_cmd_match);
+ method = dbus_address_entry_get_method (entry);
+ _dbus_assert (method != NULL);
- if(ioctl(fd, KDBUS_CMD_MATCH_ADD, &cmd))
- {
- if(error)
- dbus_set_error(error,_dbus_error_from_errno (errno), "error removing match: %s", _dbus_strerror (errno));
- _dbus_verbose("Failed removing match rule; error: %d, %m\n", errno);
- }
+ if (strcmp (method, "kdbus") == 0)
+ {
+ const char *path = dbus_address_entry_get_value (entry, "path");
+
+ if (path == NULL)
+ {
+ _dbus_set_bad_address (error, "kdbus", "path", NULL);
+ return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
+ }
+
+ *transport_p = _dbus_transport_new_for_kdbus (path, error);
+
+ if (*transport_p == NULL)
+ {
+ _DBUS_ASSERT_ERROR_IS_SET (error);
+ return DBUS_TRANSPORT_OPEN_DID_NOT_CONNECT;
+ }
+ else
+ {
+ _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+ return DBUS_TRANSPORT_OPEN_OK;
+ }
+ }
else
- _dbus_verbose("Match rule removed correctly.\n");
+ {
+ _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+ return DBUS_TRANSPORT_OPEN_NOT_HANDLED;
+ }
}
projects / platform / upstream / dbus.git / blobdiff