#include "strv.h"
#include "def.h"
#include "capability.h"
-#include "bus-policy.h"
+#include "bus-control.h"
+#include "smack-util.h"
+#include "set.h"
+#include "bus-xml-policy.h"
+#include "driver.h"
+#include "proxy.h"
+#include "synthesize.h"
static char *arg_address = NULL;
static char *arg_command_line_buffer = NULL;
" --configuration=PATH Configuration file or directory\n"
" --machine=MACHINE Connect to specified machine\n"
" --address=ADDRESS Connect to the bus specified by ADDRESS\n"
- " (default: " DEFAULT_SYSTEM_BUS_PATH ")\n",
+ " (default: " DEFAULT_SYSTEM_BUS_ADDRESS ")\n",
program_invocation_short_name);
return 0;
return log_oom();
#ifdef ENABLE_KDBUS
- a = strjoin("x-container-kernel:machine=", e, ";x-container-unix:machine=", e, NULL);
+ a = strjoin("x-machine-kernel:machine=", e, ";x-machine-unix:machine=", e, NULL);
#else
- a = strjoin("x-container-unix:machine=", e, NULL);
+ a = strjoin("x-machine-unix:machine=", e, NULL);
#endif
if (!a)
return log_oom();
}
if (!arg_address) {
- arg_address = strdup(DEFAULT_SYSTEM_BUS_PATH);
+ arg_address = strdup(DEFAULT_SYSTEM_BUS_ADDRESS);
if (!arg_address)
return log_oom();
}
assert(a);
assert(b);
- r = sd_bus_get_owner_creds(b, SD_BUS_CREDS_UID|SD_BUS_CREDS_PID|SD_BUS_CREDS_CMDLINE|SD_BUS_CREDS_COMM, &creds);
+ r = sd_bus_get_owner_creds(b, SD_BUS_CREDS_UID|SD_BUS_CREDS_PID|SD_BUS_CREDS_CMDLINE|SD_BUS_CREDS_COMM|SD_BUS_CREDS_AUGMENT, &creds);
if (r < 0)
return r;
return 0;
}
-static int synthesize_name_acquired(sd_bus *a, sd_bus *b, sd_bus_message *m) {
- _cleanup_bus_message_unref_ sd_bus_message *n = NULL;
- const char *name, *old_owner, *new_owner;
- int r;
-
- assert(a);
- assert(b);
- assert(m);
-
- /* If we get NameOwnerChanged for our own name, we need to
- * synthesize NameLost/NameAcquired, since socket clients need
- * that, even though it is obsoleted on kdbus */
-
- if (!a->is_kernel)
- return 0;
-
- if (!sd_bus_message_is_signal(m, "org.freedesktop.DBus", "NameOwnerChanged") ||
- !streq_ptr(m->path, "/org/freedesktop/DBus") ||
- !streq_ptr(m->sender, "org.freedesktop.DBus"))
- return 0;
-
- r = sd_bus_message_read(m, "sss", &name, &old_owner, &new_owner);
- if (r < 0)
- return r;
-
- r = sd_bus_message_rewind(m, true);
- if (r < 0)
- return r;
-
- if (streq(old_owner, a->unique_name)) {
-
- r = sd_bus_message_new_signal(
- b,
- &n,
- "/org/freedesktop/DBus",
- "org.freedesktop.DBus",
- "NameLost");
-
- } else if (streq(new_owner, a->unique_name)) {
-
- r = sd_bus_message_new_signal(
- b,
- &n,
- "/org/freedesktop/DBus",
- "org.freedesktop.DBus",
- "NameAcquired");
- } else
- return 0;
-
- if (r < 0)
- return r;
-
- r = sd_bus_message_append(n, "s", name);
- if (r < 0)
- return r;
-
- r = bus_message_append_sender(n, "org.freedesktop.DBus");
- if (r < 0)
- return r;
-
- r = bus_seal_synthetic_message(b, n);
- if (r < 0)
- return r;
-
- return sd_bus_send(b, n, NULL);
-}
-
-static int process_policy(sd_bus *a, sd_bus *b, sd_bus_message *m) {
- _cleanup_bus_message_unref_ sd_bus_message *n = NULL;
- int r;
-
- assert(a);
- assert(b);
- assert(m);
-
- if (!a->is_kernel)
- return 0;
-
- if (!sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "GetAll"))
- return 0;
-
- if (!streq_ptr(m->path, "/org/gnome/DisplayManager/Slave"))
- return 0;
-
- r = sd_bus_message_new_method_errorf(m, &n, SD_BUS_ERROR_ACCESS_DENIED, "gdm, you are stupid");
- if (r < 0)
- return r;
-
- r = bus_message_append_sender(n, "org.freedesktop.DBus");
- if (r < 0) {
- log_error("Failed to append sender to gdm reply: %s", strerror(-r));
- return r;
- }
-
- r = bus_seal_synthetic_message(b, n);
- if (r < 0) {
- log_error("Failed to seal gdm reply: %s", strerror(-r));
- return r;
- }
-
- r = sd_bus_send(b, n, NULL);
- if (r < 0) {
- log_error("Failed to send gdm reply: %s", strerror(-r));
- return r;
- }
-
- return 1;
-}
-
-static int synthetic_driver_send(sd_bus *b, sd_bus_message *m) {
- int r;
-
- assert(b);
- assert(m);
-
- r = bus_message_append_sender(m, "org.freedesktop.DBus");
- if (r < 0)
- return r;
-
- r = bus_seal_synthetic_message(b, m);
- if (r < 0)
- return r;
-
- return sd_bus_send(b, m, NULL);
-}
-
-static int synthetic_reply_method_error(sd_bus_message *call, const sd_bus_error *e) {
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- int r;
-
- assert(call);
-
- if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
- return 0;
-
- r = sd_bus_message_new_method_error(call, &m, e);
- if (r < 0)
- return r;
-
- return synthetic_driver_send(call->bus, m);
-}
-
-static int synthetic_reply_method_errno(sd_bus_message *call, int error, const sd_bus_error *p) {
-
- _cleanup_bus_error_free_ sd_bus_error berror = SD_BUS_ERROR_NULL;
-
- assert(call);
-
- if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
- return 0;
-
- if (sd_bus_error_is_set(p))
- return synthetic_reply_method_error(call, p);
-
- sd_bus_error_set_errno(&berror, error);
-
- return synthetic_reply_method_error(call, &berror);
-}
-
-static int synthetic_reply_method_return(sd_bus_message *call, const char *types, ...) {
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- int r;
-
- assert(call);
-
- if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
- return 0;
-
- r = sd_bus_message_new_method_return(call, &m);
- if (r < 0)
- return r;
-
- if (!isempty(types)) {
- va_list ap;
-
- va_start(ap, types);
- r = bus_message_append_ap(m, types, ap);
- va_end(ap);
- if (r < 0)
- return r;
- }
-
- return synthetic_driver_send(call->bus, m);
-}
-
-static int synthetic_reply_return_strv(sd_bus_message *call, char **l) {
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- int r;
-
- assert(call);
-
- r = sd_bus_message_new_method_return(call, &m);
- if (r < 0)
- return synthetic_reply_method_errno(call, r, NULL);
-
- r = sd_bus_message_append_strv(m, l);
- if (r < 0)
- return synthetic_reply_method_errno(call, r, NULL);
-
- return synthetic_driver_send(call->bus, m);
-}
-
-static int get_creds_by_name(sd_bus *bus, const char *name, uint64_t mask, sd_bus_creds **_creds, sd_bus_error *error) {
- _cleanup_bus_creds_unref_ sd_bus_creds *c = NULL;
- int r;
-
- assert(bus);
- assert(name);
- assert(_creds);
-
- assert_return(service_name_is_valid(name), -EINVAL);
-
- r = sd_bus_get_name_creds(bus, name, mask, &c);
- if (r == -ESRCH || r == -ENXIO)
- return sd_bus_error_setf(error, SD_BUS_ERROR_NAME_HAS_NO_OWNER, "Name %s is currently not owned by anyone.", name);
- if (r < 0)
- return r;
-
- if ((c->mask & mask) != mask)
- return -ENOTSUP;
-
- *_creds = c;
- c = NULL;
-
- return 0;
-}
-
-static int get_creds_by_message(sd_bus *bus, sd_bus_message *m, uint64_t mask, sd_bus_creds **_creds, sd_bus_error *error) {
- const char *name;
- int r;
-
- assert(bus);
- assert(m);
- assert(_creds);
-
- r = sd_bus_message_read(m, "s", &name);
- if (r < 0)
- return r;
-
- return get_creds_by_name(bus, name, mask, _creds, error);
-}
-
-static int peer_is_privileged(sd_bus *bus, sd_bus_message *m) {
- _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
- uid_t uid;
- int r;
-
- r = get_creds_by_message(bus, m, SD_BUS_CREDS_UID, &creds, NULL);
- if (r < 0)
- return r;
-
- r = sd_bus_creds_get_uid(creds, &uid);
- if (r < 0)
- return r;
-
- r = sd_bus_creds_has_effective_cap(creds, CAP_SYS_ADMIN);
- if (r > 0)
- return true;
-
- if (uid == getuid())
- return true;
-
- return false;
-}
-
-static int process_driver(sd_bus *a, sd_bus *b, sd_bus_message *m) {
- int r;
-
- assert(a);
- assert(b);
- assert(m);
-
- if (!a->is_kernel)
- return 0;
-
- if (!streq_ptr(sd_bus_message_get_destination(m), "org.freedesktop.DBus"))
- return 0;
-
- if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) {
- if (0 && !isempty(sd_bus_message_get_signature(m, true))) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-
- r = sd_bus_error_setf(&error, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters");
-
- return synthetic_reply_method_errno(m, r, &error);
- }
-
- return synthetic_reply_method_return(m, "s",
- "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\" "
- "\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
- "<node>\n"
- " <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
- " <method name=\"Introspect\">\n"
- " <arg name=\"data\" type=\"s\" direction=\"out\"/>\n"
- " </method>\n"
- " </interface>\n"
- " <interface name=\"org.freedesktop.DBus\">\n"
- " <method name=\"AddMatch\">\n"
- " <arg type=\"s\" direction=\"in\"/>\n"
- " </method>\n"
- " <method name=\"RemoveMatch\">\n"
- " <arg type=\"s\" direction=\"in\"/>\n"
- " </method>\n"
- " <method name=\"GetConnectionSELinuxSecurityContext\">\n"
- " <arg type=\"s\" direction=\"in\"/>\n"
- " <arg type=\"ay\" direction=\"out\"/>\n"
- " </method>\n"
- " <method name=\"GetConnectionUnixProcessID\">\n"
- " <arg type=\"s\" direction=\"in\"/>\n"
- " <arg type=\"u\" direction=\"out\"/>\n"
- " </method>\n"
- " <method name=\"GetConnectionUnixUser\">\n"
- " <arg type=\"s\" direction=\"in\"/>\n"
- " <arg type=\"u\" direction=\"out\"/>\n"
- " </method>\n"
- " <method name=\"GetId\">\n"
- " <arg type=\"s\" direction=\"out\"/>\n"
- " </method>\n"
- " <method name=\"GetNameOwner\">\n"
- " <arg type=\"s\" direction=\"in\"/>\n"
- " <arg type=\"s\" direction=\"out\"/>\n"
- " </method>\n"
- " <method name=\"Hello\">\n"
- " <arg type=\"s\" direction=\"out\"/>\n"
- " </method>\n"
- " <method name=\"ListActivatableNames\">\n"
- " <arg type=\"as\" direction=\"out\"/>\n"
- " </method>\n"
- " <method name=\"ListNames\">\n"
- " <arg type=\"as\" direction=\"out\"/>\n"
- " </method>\n"
- " <method name=\"ListQueuedOwners\">\n"
- " <arg type=\"s\" direction=\"in\"/>\n"
- " <arg type=\"as\" direction=\"out\"/>\n"
- " </method>\n"
- " <method name=\"NameHasOwner\">\n"
- " <arg type=\"s\" direction=\"in\"/>\n"
- " <arg type=\"b\" direction=\"out\"/>\n"
- " </method>\n"
- " <method name=\"ReleaseName\">\n"
- " <arg type=\"s\" direction=\"in\"/>\n"
- " <arg type=\"u\" direction=\"out\"/>\n"
- " </method>\n"
- " <method name=\"ReloadConfig\">\n"
- " </method>\n"
- " <method name=\"RequestName\">\n"
- " <arg type=\"s\" direction=\"in\"/>\n"
- " <arg type=\"u\" direction=\"in\"/>\n"
- " <arg type=\"u\" direction=\"out\"/>\n"
- " </method>\n"
- " <method name=\"StartServiceByName\">\n"
- " <arg type=\"s\" direction=\"in\"/>\n"
- " <arg type=\"u\" direction=\"in\"/>\n"
- " <arg type=\"u\" direction=\"out\"/>\n"
- " </method>\n"
- " <method name=\"UpdateActivationEnvironment\">\n"
- " <arg type=\"a{ss}\" direction=\"in\"/>\n"
- " </method>\n"
- " <signal name=\"NameAcquired\">\n"
- " <arg type=\"s\"/>\n"
- " </signal>\n"
- " <signal name=\"NameLost\">\n"
- " <arg type=\"s\"/>\n"
- " </signal>\n"
- " <signal name=\"NameOwnerChanged\">\n"
- " <arg type=\"s\"/>\n"
- " <arg type=\"s\"/>\n"
- " <arg type=\"s\"/>\n"
- " </signal>\n"
- " </interface>\n"
- "</node>\n");
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "AddMatch")) {
- const char *match;
-
- r = sd_bus_message_read(m, "s", &match);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- r = sd_bus_add_match(a, NULL, match, NULL, NULL);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- return synthetic_reply_method_return(m, NULL);
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "RemoveMatch")) {
- const char *match;
-
- r = sd_bus_message_read(m, "s", &match);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- r = bus_remove_match_by_string(a, match, NULL, NULL);
- if (r == 0)
- return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_MATCH_RULE_NOT_FOUND, "Match rule not found"));
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- return synthetic_reply_method_return(m, NULL);
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetConnectionSELinuxSecurityContext")) {
- _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-
- r = get_creds_by_message(a, m, SD_BUS_CREDS_SELINUX_CONTEXT, &creds, &error);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, &error);
-
- return synthetic_reply_method_return(m, "y", creds->label, strlen(creds->label));
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetConnectionUnixProcessID")) {
- _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-
- r = get_creds_by_message(a, m, SD_BUS_CREDS_PID, &creds, &error);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, &error);
-
- return synthetic_reply_method_return(m, "u", (uint32_t) creds->pid);
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetConnectionUnixUser")) {
- _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-
- r = get_creds_by_message(a, m, SD_BUS_CREDS_UID, &creds, &error);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, &error);
-
- return synthetic_reply_method_return(m, "u", (uint32_t) creds->uid);
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetId")) {
- sd_id128_t server_id;
- char buf[SD_ID128_STRING_MAX];
-
- r = sd_bus_get_server_id(a, &server_id);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- return synthetic_reply_method_return(m, "s", sd_id128_to_string(server_id, buf));
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetNameOwner")) {
- const char *name;
- _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-
- r = sd_bus_message_read(m, "s", &name);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- if (streq(name, "org.freedesktop.DBus"))
- return synthetic_reply_method_return(m, "s", "org.freedesktop.DBus");
-
- r = get_creds_by_name(a, name, SD_BUS_CREDS_UNIQUE_NAME, &creds, &error);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, &error);
-
- return synthetic_reply_method_return(m, "s", creds->unique_name);
-
- /* "Hello" is handled in process_hello() */
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "ListActivatableNames")) {
- _cleanup_strv_free_ char **names = NULL;
-
- r = sd_bus_list_names(a, NULL, &names);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- /* Let's sort the names list to make it stable */
- strv_sort(names);
-
- return synthetic_reply_return_strv(m, names);
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "ListNames")) {
- _cleanup_strv_free_ char **names = NULL;
-
- r = sd_bus_list_names(a, &names, NULL);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- r = strv_extend(&names, "org.freedesktop.DBus");
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- /* Let's sort the names list to make it stable */
- strv_sort(names);
-
- return synthetic_reply_return_strv(m, names);
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "ListQueuedOwners")) {
- struct kdbus_cmd_name_list cmd = {};
- struct kdbus_name_list *name_list;
- struct kdbus_cmd_free cmd_free;
- struct kdbus_name_info *name;
- _cleanup_strv_free_ char **owners = NULL;
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- char *arg0;
- int err = 0;
-
- r = sd_bus_message_read(m, "s", &arg0);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- if (!service_name_is_valid(arg0))
- return synthetic_reply_method_errno(m, -EINVAL, NULL);
-
- r = sd_bus_get_name_creds(a, arg0, 0, NULL);
- if (r == -ESRCH || r == -ENXIO) {
- sd_bus_error_setf(&error, SD_BUS_ERROR_NAME_HAS_NO_OWNER, "Could not get owners of name '%s': no such name.", arg0);
- return synthetic_reply_method_errno(m, r, &error);
- }
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- cmd.flags = KDBUS_NAME_LIST_QUEUED;
- r = ioctl(a->input_fd, KDBUS_CMD_NAME_LIST, &cmd);
- if (r < 0)
- return synthetic_reply_method_errno(m, -errno, NULL);
-
- name_list = (struct kdbus_name_list *) ((uint8_t *) a->kdbus_buffer + cmd.offset);
-
- KDBUS_ITEM_FOREACH(name, name_list, names) {
- const char *entry_name = NULL;
- struct kdbus_item *item;
- char *n;
-
- KDBUS_ITEM_FOREACH(item, name, items)
- if (item->type == KDBUS_ITEM_OWNED_NAME)
- entry_name = item->name.name;
-
- if (!streq_ptr(entry_name, arg0))
- continue;
-
- if (asprintf(&n, ":1.%llu", (unsigned long long) name->owner_id) < 0) {
- err = -ENOMEM;
- break;
- }
-
- r = strv_consume(&owners, n);
- if (r < 0) {
- err = r;
- break;
- }
- }
-
- cmd_free.flags = 0;
- cmd_free.offset = cmd.offset;
-
- r = ioctl(a->input_fd, KDBUS_CMD_FREE, &cmd_free);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- if (err < 0)
- return synthetic_reply_method_errno(m, err, NULL);
-
- return synthetic_reply_return_strv(m, owners);
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "NameHasOwner")) {
- const char *name;
-
- r = sd_bus_message_read(m, "s", &name);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- if (!service_name_is_valid(name))
- return synthetic_reply_method_errno(m, -EINVAL, NULL);
-
- if (streq(name, "org.freedesktop.DBus"))
- return synthetic_reply_method_return(m, "b", true);
-
- r = sd_bus_get_name_creds(a, name, 0, NULL);
- if (r < 0 && r != -ESRCH && r != -ENXIO)
- return synthetic_reply_method_errno(m, r, NULL);
-
- return synthetic_reply_method_return(m, "b", r >= 0);
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "ReleaseName")) {
- const char *name;
-
- r = sd_bus_message_read(m, "s", &name);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- if (!service_name_is_valid(name))
- return synthetic_reply_method_errno(m, -EINVAL, NULL);
-
- r = sd_bus_release_name(a, name);
- if (r < 0) {
- if (r == -ESRCH)
- return synthetic_reply_method_return(m, "u", BUS_NAME_NON_EXISTENT);
- if (r == -EADDRINUSE)
- return synthetic_reply_method_return(m, "u", BUS_NAME_NOT_OWNER);
-
- return synthetic_reply_method_errno(m, r, NULL);
- }
-
- return synthetic_reply_method_return(m, "u", BUS_NAME_RELEASED);
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "ReloadConfig")) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-
- r = sd_bus_error_setf(&error, SD_BUS_ERROR_NOT_SUPPORTED, "%s() is not supported", sd_bus_message_get_member(m));
-
- return synthetic_reply_method_errno(m, r, &error);
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "RequestName")) {
- const char *name;
- uint32_t flags, param;
-
- r = sd_bus_message_read(m, "su", &name, &flags);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- if (!service_name_is_valid(name))
- return synthetic_reply_method_errno(m, -EINVAL, NULL);
- if ((flags & ~(BUS_NAME_ALLOW_REPLACEMENT|BUS_NAME_REPLACE_EXISTING|BUS_NAME_DO_NOT_QUEUE)) != 0)
- return synthetic_reply_method_errno(m, -EINVAL, NULL);
-
- param = 0;
- if (flags & BUS_NAME_ALLOW_REPLACEMENT)
- param |= SD_BUS_NAME_ALLOW_REPLACEMENT;
- if (flags & BUS_NAME_REPLACE_EXISTING)
- param |= SD_BUS_NAME_REPLACE_EXISTING;
- if (!(flags & BUS_NAME_DO_NOT_QUEUE))
- param |= SD_BUS_NAME_QUEUE;
-
- r = sd_bus_request_name(a, name, param);
- if (r < 0) {
- if (r == -EEXIST)
- return synthetic_reply_method_return(m, "u", BUS_NAME_EXISTS);
- if (r == -EALREADY)
- return synthetic_reply_method_return(m, "u", BUS_NAME_ALREADY_OWNER);
- return synthetic_reply_method_errno(m, r, NULL);
- }
-
- if (r == 0)
- return synthetic_reply_method_return(m, "u", BUS_NAME_IN_QUEUE);
-
- return synthetic_reply_method_return(m, "u", BUS_NAME_PRIMARY_OWNER);
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "StartServiceByName")) {
- _cleanup_bus_message_unref_ sd_bus_message *msg = NULL;
- const char *name;
- uint32_t flags;
-
- r = sd_bus_message_read(m, "su", &name, &flags);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- if (!service_name_is_valid(name))
- return synthetic_reply_method_errno(m, -EINVAL, NULL);
- if (flags != 0)
- return synthetic_reply_method_errno(m, -EINVAL, NULL);
-
- r = sd_bus_get_name_creds(a, name, 0, NULL);
- if (r >= 0 || streq(name, "org.freedesktop.DBus"))
- return synthetic_reply_method_return(m, "u", BUS_START_REPLY_ALREADY_RUNNING);
- if (r != -ESRCH)
- return synthetic_reply_method_errno(m, r, NULL);
-
- r = sd_bus_message_new_method_call(
- a,
- &msg,
- name,
- "/",
- "org.freedesktop.DBus.Peer",
- "Ping");
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- r = sd_bus_send(a, msg, NULL);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- return synthetic_reply_method_return(m, "u", BUS_START_REPLY_SUCCESS);
-
- } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "UpdateActivationEnvironment")) {
- _cleanup_bus_message_unref_ sd_bus_message *msg = NULL;
- _cleanup_strv_free_ char **args = NULL;
-
- if (!peer_is_privileged(a, m))
- return synthetic_reply_method_errno(m, -EPERM, NULL);
-
- r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{ss}");
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "ss")) > 0) {
- _cleanup_free_ char *s = NULL;
- const char *key;
- const char *value;
-
- r = sd_bus_message_read(m, "ss", &key, &value);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- s = strjoin(key, "=", value, NULL);
- if (!s)
- return synthetic_reply_method_errno(m, -ENOMEM, NULL);
-
- r = strv_extend(&args, s);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- r = sd_bus_message_exit_container(m);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
- }
-
- r = sd_bus_message_exit_container(m);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- if (!args)
- return synthetic_reply_method_errno(m, -EINVAL, NULL);
-
- r = sd_bus_message_new_method_call(
- a,
- &msg,
- "org.freedesktop.systemd1",
- "/org/freedesktop/systemd1",
- "org.freedesktop.systemd1.Manager",
- "SetEnvironment");
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- r = sd_bus_message_append_strv(msg, args);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- r = sd_bus_call(a, msg, 0, NULL, NULL);
- if (r < 0)
- return synthetic_reply_method_errno(m, r, NULL);
-
- return synthetic_reply_method_return(m, NULL);
-
- } else {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-
- r = sd_bus_error_setf(&error, SD_BUS_ERROR_UNKNOWN_METHOD, "Unknown method '%s'.", m->member);
-
- return synthetic_reply_method_errno(m, r, &error);
- }
-}
-
-static int process_hello(sd_bus *a, sd_bus *b, sd_bus_message *m, bool *got_hello) {
- _cleanup_bus_message_unref_ sd_bus_message *n = NULL;
- bool is_hello;
- int r;
-
- assert(a);
- assert(b);
- assert(m);
- assert(got_hello);
-
- /* As reaction to hello we need to respond with two messages:
- * the callback reply and the NameAcquired for the unique
- * name, since hello is otherwise obsolete on kdbus. */
-
- is_hello =
- sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "Hello") &&
- streq_ptr(m->destination, "org.freedesktop.DBus");
-
- if (!is_hello) {
-
- if (*got_hello)
- return 0;
-
- log_error("First packet isn't hello (it's %s.%s), aborting.", m->interface, m->member);
- return -EIO;
- }
-
- if (*got_hello) {
- log_error("Got duplicate hello, aborting.");
- return -EIO;
- }
-
- *got_hello = true;
-
- if (!a->is_kernel)
- return 0;
-
- r = sd_bus_message_new_method_return(m, &n);
- if (r < 0) {
- log_error("Failed to generate HELLO reply: %s", strerror(-r));
- return r;
- }
-
- r = sd_bus_message_append(n, "s", a->unique_name);
- if (r < 0) {
- log_error("Failed to append unique name to HELLO reply: %s", strerror(-r));
- return r;
- }
-
- r = bus_message_append_sender(n, "org.freedesktop.DBus");
- if (r < 0) {
- log_error("Failed to append sender to HELLO reply: %s", strerror(-r));
- return r;
- }
-
- r = bus_seal_synthetic_message(b, n);
- if (r < 0) {
- log_error("Failed to seal HELLO reply: %s", strerror(-r));
- return r;
- }
-
- r = sd_bus_send(b, n, NULL);
- if (r < 0) {
- log_error("Failed to send HELLO reply: %s", strerror(-r));
- return r;
- }
-
- n = sd_bus_message_unref(n);
- r = sd_bus_message_new_signal(
- b,
- &n,
- "/org/freedesktop/DBus",
- "org.freedesktop.DBus",
- "NameAcquired");
- if (r < 0) {
- log_error("Failed to allocate initial NameAcquired message: %s", strerror(-r));
- return r;
- }
-
- r = sd_bus_message_append(n, "s", a->unique_name);
- if (r < 0) {
- log_error("Failed to append unique name to NameAcquired message: %s", strerror(-r));
- return r;
- }
-
- r = bus_message_append_sender(n, "org.freedesktop.DBus");
- if (r < 0) {
- log_error("Failed to append sender to NameAcquired message: %s", strerror(-r));
- return r;
- }
-
- r = bus_seal_synthetic_message(b, n);
- if (r < 0) {
- log_error("Failed to seal NameAcquired message: %s", strerror(-r));
- return r;
- }
-
- r = sd_bus_send(b, n, NULL);
- if (r < 0) {
- log_error("Failed to send NameAcquired message: %s", strerror(-r));
- return r;
- }
-
- return 1;
-}
-
-static int patch_sender(sd_bus *a, sd_bus_message *m) {
- char **well_known = NULL;
- sd_bus_creds *c;
- int r;
-
- assert(a);
- assert(m);
-
- if (!a->is_kernel)
- return 0;
-
- /* We will change the sender of messages from the bus driver
- * so that they originate from the bus driver. This is a
- * speciality originating from dbus1, where the bus driver did
- * not have a unique id, but only the well-known name. */
-
- c = sd_bus_message_get_creds(m);
- if (!c)
- return 0;
-
- r = sd_bus_creds_get_well_known_names(c, &well_known);
- if (r < 0)
- return r;
-
- if (strv_contains(well_known, "org.freedesktop.DBus"))
- m->sender = "org.freedesktop.DBus";
-
- return 0;
-}
-
int main(int argc, char *argv[]) {
-
- _cleanup_bus_close_unref_ sd_bus *a = NULL, *b = NULL;
- sd_id128_t server_id;
+ _cleanup_(proxy_freep) Proxy *p = NULL;
int r, in_fd, out_fd;
- bool got_hello = false;
- bool is_unix;
- struct ucred ucred = {};
- _cleanup_free_ char *peersec = NULL;
- Policy policy = {};
+ uid_t original_uid;
log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
log_parse_environment();
if (r <= 0)
goto finish;
- r = policy_load(&policy, arg_configuration);
- if (r < 0) {
- log_error("Failed to load policy: %s", strerror(-r));
- goto finish;
- }
-
- /* policy_dump(&policy); */
-
r = sd_listen_fds(0);
if (r == 0) {
in_fd = STDIN_FILENO;
goto finish;
}
- is_unix =
- sd_is_socket(in_fd, AF_UNIX, 0, 0) > 0 &&
- sd_is_socket(out_fd, AF_UNIX, 0, 0) > 0;
-
- if (is_unix) {
- (void) getpeercred(in_fd, &ucred);
- (void) getpeersec(in_fd, &peersec);
- }
+ original_uid = getuid();
if (arg_drop_privileges) {
const char *user = "systemd-bus-proxy";
r = get_user_creds(&user, &uid, &gid, NULL, NULL);
if (r < 0) {
- log_error("Cannot resolve user name %s: %s", user, strerror(-r));
+ log_error_errno(r, "Cannot resolve user name %s: %m", user);
goto finish;
}
goto finish;
}
- r = sd_bus_new(&a);
- if (r < 0) {
- log_error("Failed to allocate bus: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_set_description(a, "sd-proxy");
- if (r < 0) {
- log_error("Failed to set bus name: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_set_address(a, arg_address);
- if (r < 0) {
- log_error("Failed to set address to connect to: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_negotiate_fds(a, is_unix);
- if (r < 0) {
- log_error("Failed to set FD negotiation: %s", strerror(-r));
- goto finish;
- }
-
- if (ucred.pid > 0) {
- a->fake_creds.pid = ucred.pid;
- a->fake_creds.uid = ucred.uid;
- a->fake_creds.gid = ucred.gid;
- a->fake_creds_valid = true;
- }
-
- if (peersec) {
- a->fake_label = peersec;
- peersec = NULL;
- }
-
- a->manual_peer_interface = true;
-
- r = sd_bus_start(a);
- if (r < 0) {
- log_error("Failed to start bus client: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_get_server_id(a, &server_id);
- if (r < 0) {
- log_error("Failed to get server ID: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_new(&b);
- if (r < 0) {
- log_error("Failed to allocate bus: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_set_fd(b, in_fd, out_fd);
- if (r < 0) {
- log_error("Failed to set fds: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_set_server(b, 1, server_id);
- if (r < 0) {
- log_error("Failed to set server mode: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_negotiate_fds(b, is_unix);
- if (r < 0) {
- log_error("Failed to set FD negotiation: %s", strerror(-r));
+ r = proxy_new(&p, in_fd, out_fd, arg_address);
+ if (r < 0)
goto finish;
- }
- r = sd_bus_set_anonymous(b, true);
- if (r < 0) {
- log_error("Failed to set anonymous authentication: %s", strerror(-r));
+ r = proxy_load_policy(p, arg_configuration);
+ if (r < 0)
goto finish;
- }
- b->manual_peer_interface = true;
-
- r = sd_bus_start(b);
- if (r < 0) {
- log_error("Failed to start bus client: %s", strerror(-r));
+ r = proxy_hello_policy(p, original_uid);
+ if (r < 0)
goto finish;
- }
- r = rename_service(a, b);
+ r = rename_service(p->dest_bus, p->local_bus);
if (r < 0)
- log_debug("Failed to rename process: %s", strerror(-r));
-
- if (a->is_kernel) {
- _cleanup_free_ char *match = NULL;
- const char *unique;
+ log_debug_errno(r, "Failed to rename process: %m");
- r = sd_bus_get_unique_name(a, &unique);
- if (r < 0) {
- log_error("Failed to get unique name: %s", strerror(-r));
- goto finish;
- }
-
- match = strjoin("type='signal',"
- "sender='org.freedesktop.DBus',"
- "path='/org/freedesktop/DBus',"
- "interface='org.freedesktop.DBus',"
- "member='NameOwnerChanged',"
- "arg1='",
- unique,
- "'",
- NULL);
- if (!match) {
- log_oom();
- goto finish;
- }
-
- r = sd_bus_add_match(a, NULL, match, NULL, NULL);
- if (r < 0) {
- log_error("Failed to add match for NameLost: %s", strerror(-r));
- goto finish;
- }
-
- free(match);
- match = strjoin("type='signal',"
- "sender='org.freedesktop.DBus',"
- "path='/org/freedesktop/DBus',"
- "interface='org.freedesktop.DBus',"
- "member='NameOwnerChanged',"
- "arg2='",
- unique,
- "'",
- NULL);
- if (!match) {
- log_oom();
- goto finish;
- }
-
- r = sd_bus_add_match(a, NULL, match, NULL, NULL);
- if (r < 0) {
- log_error("Failed to add match for NameAcquired: %s", strerror(-r));
- goto finish;
- }
- }
-
- for (;;) {
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- int events_a, events_b, fd;
- uint64_t timeout_a, timeout_b, t;
- struct timespec _ts, *ts;
- struct pollfd *pollfd;
- int k;
-
- if (got_hello) {
- r = sd_bus_process(a, &m);
- if (r < 0) {
- /* treat 'connection reset by peer' as clean exit condition */
- if (r == -ECONNRESET)
- r = 0;
- else
- log_error("Failed to process bus a: %s", strerror(-r));
-
- goto finish;
- }
-
- if (m) {
- /* We officially got EOF, let's quit */
- if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected")) {
- r = 0;
- goto finish;
- }
-
- k = synthesize_name_acquired(a, b, m);
- if (k < 0) {
- r = k;
- log_error("Failed to synthesize message: %s", strerror(-r));
- goto finish;
- }
-
- patch_sender(a, m);
-
- k = sd_bus_send(b, m, NULL);
- if (k < 0) {
- if (k == -ECONNRESET)
- r = 0;
- else {
- r = k;
- log_error("Failed to send message: %s", strerror(-r));
- }
-
- goto finish;
- }
- }
-
- if (r > 0)
- continue;
- }
-
- r = sd_bus_process(b, &m);
- if (r < 0) {
- /* treat 'connection reset by peer' as clean exit condition */
- if (r == -ECONNRESET)
- r = 0;
- else
- log_error("Failed to process bus b: %s", strerror(-r));
-
- goto finish;
- }
-
- if (m) {
- /* We officially got EOF, let's quit */
- if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected")) {
- r = 0;
- goto finish;
- }
-
- k = process_hello(a, b, m, &got_hello);
- if (k < 0) {
- r = k;
- log_error("Failed to process HELLO: %s", strerror(-r));
- goto finish;
- }
-
- if (k > 0)
- r = k;
- else {
- k = process_policy(a, b, m);
- if (k < 0) {
- r = k;
- log_error("Failed to process policy: %s", strerror(-r));
- goto finish;
- }
-
- k = process_driver(a, b, m);
- if (k < 0) {
- r = k;
- log_error("Failed to process driver calls: %s", strerror(-r));
- goto finish;
- }
-
- if (k > 0)
- r = k;
- else {
- k = sd_bus_send(a, m, NULL);
- if (k < 0) {
- if (k == -ECONNRESET)
- r = 0;
- else {
- r = k;
- log_error("Failed to send message: %s", strerror(-r));
- }
-
- goto finish;
- }
- }
- }
- }
-
- if (r > 0)
- continue;
-
- fd = sd_bus_get_fd(a);
- if (fd < 0) {
- log_error("Failed to get fd: %s", strerror(-r));
- goto finish;
- }
-
- events_a = sd_bus_get_events(a);
- if (events_a < 0) {
- log_error("Failed to get events mask: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_get_timeout(a, &timeout_a);
- if (r < 0) {
- log_error("Failed to get timeout: %s", strerror(-r));
- goto finish;
- }
-
- events_b = sd_bus_get_events(b);
- if (events_b < 0) {
- log_error("Failed to get events mask: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_get_timeout(b, &timeout_b);
- if (r < 0) {
- log_error("Failed to get timeout: %s", strerror(-r));
- goto finish;
- }
-
- t = timeout_a;
- if (t == (uint64_t) -1 || (timeout_b != (uint64_t) -1 && timeout_b < timeout_a))
- t = timeout_b;
-
- if (t == (uint64_t) -1)
- ts = NULL;
- else {
- usec_t nw;
-
- nw = now(CLOCK_MONOTONIC);
- if (t > nw)
- t -= nw;
- else
- t = 0;
-
- ts = timespec_store(&_ts, t);
- }
-
- pollfd = (struct pollfd[3]) {
- {.fd = fd, .events = events_a, },
- {.fd = in_fd, .events = events_b & POLLIN, },
- {.fd = out_fd, .events = events_b & POLLOUT, }
- };
-
- r = ppoll(pollfd, 3, ts, NULL);
- if (r < 0) {
- log_error("ppoll() failed: %m");
- goto finish;
- }
- }
+ r = proxy_run(p);
finish:
sd_notify(false,
"STOPPING=1\n"
"STATUS=Shutting down.");
- policy_free(&policy);
strv_free(arg_configuration);
free(arg_address);
~ianmdlvl / elogind.git / blobdiff