diff options
author | Tom Gundersen <teg@jklm.no> | 2014-01-13 17:30:51 +0100 |
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committer | Tom Gundersen <teg@jklm.no> | 2014-01-13 18:54:19 +0100 |
commit | 6bb648a16ae4a682ad4784412af706d2e6a3e4da (patch) | |
tree | 16e7919cb609b92e879aeeab95c70ce1fc2eb4e2 /src/libsystemd-bus/bus-util.c | |
parent | 883b36908788361a8bb945ce884dc518da83b371 (diff) |
libsystemd-bus: rename to libsystemd
Documentation was updated to refer to either 'libsystemd' or 'sd-bus' in place
of libsystemd-bus.
Diffstat (limited to 'src/libsystemd-bus/bus-util.c')
-rw-r--r-- | src/libsystemd-bus/bus-util.c | 1232 |
1 files changed, 0 insertions, 1232 deletions
diff --git a/src/libsystemd-bus/bus-util.c b/src/libsystemd-bus/bus-util.c deleted file mode 100644 index a468bcad6b..0000000000 --- a/src/libsystemd-bus/bus-util.c +++ /dev/null @@ -1,1232 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <sys/socket.h> -#include <sys/capability.h> - -#include "util.h" -#include "strv.h" -#include "macro.h" -#include "def.h" -#include "missing.h" - -#include "sd-event.h" -#include "sd-bus.h" -#include "bus-error.h" -#include "bus-message.h" -#include "bus-util.h" -#include "bus-internal.h" - -static int name_owner_change_callback(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { - sd_event *e = userdata; - - assert(bus); - assert(m); - assert(e); - - sd_event_exit(e, 0); - return 1; -} - -int bus_async_unregister_and_exit(sd_event *e, sd_bus *bus, const char *name) { - _cleanup_free_ char *match = NULL; - const char *unique; - int r; - - assert(e); - assert(bus); - assert(name); - - /* We unregister the name here and then wait for the - * NameOwnerChanged signal for this event to arrive before we - * quit. We do this in order to make sure that any queued - * requests are still processed before we really exit. */ - - r = sd_bus_get_unique_name(bus, &unique); - if (r < 0) - return r; - - r = asprintf(&match, - "sender='org.freedesktop.DBus'," - "type='signal'," - "interface='org.freedesktop.DBus'," - "member='NameOwnerChanged'," - "path='/org/freedesktop/DBus'," - "arg0='%s'," - "arg1='%s'," - "arg2=''", name, unique); - if (r < 0) - return -ENOMEM; - - r = sd_bus_add_match(bus, match, name_owner_change_callback, e); - if (r < 0) - return r; - - r = sd_bus_release_name(bus, name); - if (r < 0) - return r; - - return 0; -} - -int bus_event_loop_with_idle( - sd_event *e, - sd_bus *bus, - const char *name, - usec_t timeout, - check_idle_t check_idle, - void *userdata) { - bool exiting = false; - int r, code; - - assert(e); - assert(bus); - assert(name); - - for (;;) { - bool idle; - - r = sd_event_get_state(e); - if (r < 0) - return r; - if (r == SD_EVENT_FINISHED) - break; - - if (check_idle) - idle = check_idle(userdata); - else - idle = true; - - r = sd_event_run(e, exiting || !idle ? (uint64_t) -1 : timeout); - if (r < 0) - return r; - - if (r == 0 && !exiting) { - r = bus_async_unregister_and_exit(e, bus, name); - if (r < 0) - return r; - - exiting = true; - } - } - - r = sd_event_get_exit_code(e, &code); - if (r < 0) - return r; - - return code; -} - -int bus_name_has_owner(sd_bus *c, const char *name, sd_bus_error *error) { - _cleanup_bus_message_unref_ sd_bus_message *rep = NULL; - int r, has_owner = 0; - - assert(c); - assert(name); - - r = sd_bus_call_method(c, - "org.freedesktop.DBus", - "/org/freedesktop/dbus", - "org.freedesktop.DBus", - "NameHasOwner", - error, - &rep, - "s", - name); - if (r < 0) - return r; - - r = sd_bus_message_read_basic(rep, 'b', &has_owner); - if (r < 0) - return sd_bus_error_set_errno(error, r); - - return has_owner; -} - -int bus_verify_polkit( - sd_bus *bus, - sd_bus_message *m, - const char *action, - bool interactive, - bool *_challenge, - sd_bus_error *e) { - - _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL; - uid_t uid; - int r; - - assert(bus); - assert(m); - assert(action); - - r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_UID, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_uid(creds, &uid); - if (r < 0) - return r; - - if (uid == 0) - return 1; - -#ifdef ENABLE_POLKIT - else { - _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; - int authorized = false, challenge = false; - const char *sender; - - sender = sd_bus_message_get_sender(m); - if (!sender) - return -EBADMSG; - - r = sd_bus_call_method( - bus, - "org.freedesktop.PolicyKit1", - "/org/freedesktop/PolicyKit1/Authority", - "org.freedesktop.PolicyKit1.Authority", - "CheckAuthorization", - e, - &reply, - "(sa{sv})sa{ss}us", - "system-bus-name", 1, "name", "s", sender, - action, - 0, - interactive ? 1 : 0, - ""); - - if (r < 0) { - /* Treat no PK available as access denied */ - if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) { - sd_bus_error_free(e); - return -EACCES; - } - - return r; - } - - r = sd_bus_message_enter_container(reply, 'r', "bba{ss}"); - if (r < 0) - return r; - - r = sd_bus_message_read(reply, "bb", &authorized, &challenge); - if (r < 0) - return r; - - if (authorized) - return 1; - - if (_challenge) { - *_challenge = challenge; - return 0; - } - } -#endif - - return -EACCES; -} - -#ifdef ENABLE_POLKIT - -typedef struct AsyncPolkitQuery { - sd_bus_message *request, *reply; - sd_bus_message_handler_t callback; - void *userdata; - uint64_t serial; - Hashmap *registry; -} AsyncPolkitQuery; - -static void async_polkit_query_free(sd_bus *b, AsyncPolkitQuery *q) { - - if (!q) - return; - - if (q->serial > 0 && b) - sd_bus_call_async_cancel(b, q->serial); - - if (q->registry && q->request) - hashmap_remove(q->registry, q->request); - - sd_bus_message_unref(q->request); - sd_bus_message_unref(q->reply); - - free(q); -} - -static int async_polkit_callback(sd_bus *bus, sd_bus_message *reply, void *userdata, sd_bus_error *error) { - _cleanup_bus_error_free_ sd_bus_error error_buffer = SD_BUS_ERROR_NULL; - AsyncPolkitQuery *q = userdata; - int r; - - assert(bus); - assert(reply); - assert(q); - - q->reply = sd_bus_message_ref(reply); - q->serial = 0; - - r = sd_bus_message_rewind(q->request, true); - if (r < 0) { - r = sd_bus_reply_method_errno(q->request, r, NULL); - goto finish; - } - - r = q->callback(bus, q->request, q->userdata, &error_buffer); - r = bus_maybe_reply_error(q->request, r, &error_buffer); - -finish: - async_polkit_query_free(bus, q); - return r; -} - -#endif - -int bus_verify_polkit_async( - sd_bus *bus, - Hashmap **registry, - sd_bus_message *m, - const char *action, - bool interactive, - sd_bus_error *error, - sd_bus_message_handler_t callback, - void *userdata) { - -#ifdef ENABLE_POLKIT - _cleanup_bus_message_unref_ sd_bus_message *pk = NULL; - AsyncPolkitQuery *q; - const char *sender; -#endif - _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL; - uid_t uid; - int r; - - assert(bus); - assert(registry); - assert(m); - assert(action); - -#ifdef ENABLE_POLKIT - q = hashmap_get(*registry, m); - if (q) { - int authorized, challenge; - - /* This is the second invocation of this function, and - * there's already a response from polkit, let's - * process it */ - assert(q->reply); - - if (sd_bus_message_is_method_error(q->reply, NULL)) { - const sd_bus_error *e; - - /* Copy error from polkit reply */ - e = sd_bus_message_get_error(q->reply); - sd_bus_error_copy(error, e); - - /* Treat no PK available as access denied */ - if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) - return -EACCES; - - return -sd_bus_error_get_errno(e); - } - - r = sd_bus_message_enter_container(q->reply, 'r', "bba{ss}"); - if (r >= 0) - r = sd_bus_message_read(q->reply, "bb", &authorized, &challenge); - - if (r < 0) - return r; - - if (authorized) - return 1; - - return -EACCES; - } -#endif - - r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_UID, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_uid(creds, &uid); - if (r < 0) - return r; - - if (uid == 0) - return 1; - -#ifdef ENABLE_POLKIT - sender = sd_bus_message_get_sender(m); - if (!sender) - return -EBADMSG; - - r = hashmap_ensure_allocated(registry, trivial_hash_func, trivial_compare_func); - if (r < 0) - return r; - - r = sd_bus_message_new_method_call( - bus, - "org.freedesktop.PolicyKit1", - "/org/freedesktop/PolicyKit1/Authority", - "org.freedesktop.PolicyKit1.Authority", - "CheckAuthorization", - &pk); - if (r < 0) - return r; - - r = sd_bus_message_append( - pk, - "(sa{sv})sa{ss}us", - "system-bus-name", 1, "name", "s", sender, - action, - 0, - interactive ? 1 : 0, - NULL); - if (r < 0) - return r; - - q = new0(AsyncPolkitQuery, 1); - if (!q) - return -ENOMEM; - - q->request = sd_bus_message_ref(m); - q->callback = callback; - q->userdata = userdata; - - r = hashmap_put(*registry, m, q); - if (r < 0) { - async_polkit_query_free(bus, q); - return r; - } - - q->registry = *registry; - - r = sd_bus_call_async(bus, pk, async_polkit_callback, q, 0, &q->serial); - if (r < 0) { - async_polkit_query_free(bus, q); - return r; - } - - return 0; -#endif - - return -EACCES; -} - -void bus_verify_polkit_async_registry_free(sd_bus *bus, Hashmap *registry) { -#ifdef ENABLE_POLKIT - AsyncPolkitQuery *q; - - while ((q = hashmap_steal_first(registry))) - async_polkit_query_free(bus, q); - - hashmap_free(registry); -#endif -} - -int bus_check_peercred(sd_bus *c) { - struct ucred ucred; - socklen_t l; - int fd; - - assert(c); - - fd = sd_bus_get_fd(c); - if (fd < 0) - return fd; - - l = sizeof(struct ucred); - if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0) - return -errno; - - if (l != sizeof(struct ucred)) - return -E2BIG; - - if (ucred.uid != 0 && ucred.uid != geteuid()) - return -EPERM; - - return 1; -} - -int bus_open_system_systemd(sd_bus **_bus) { - _cleanup_bus_unref_ sd_bus *bus = NULL; - int r; - - assert(_bus); - - if (geteuid() != 0) - return sd_bus_open_system(_bus); - - /* If we are root and kdbus is not available, then let's talk - * directly to the system instance, instead of going via the - * bus */ - -#ifdef ENABLE_KDBUS - r = sd_bus_new(&bus); - if (r < 0) - return r; - - r = sd_bus_set_address(bus, KERNEL_SYSTEM_BUS_PATH); - if (r < 0) - return r; - - bus->bus_client = true; - - r = sd_bus_start(bus); - if (r >= 0) { - *_bus = bus; - bus = NULL; - return 0; - } - - bus = sd_bus_unref(bus); -#endif - - r = sd_bus_new(&bus); - if (r < 0) - return r; - - r = sd_bus_set_address(bus, "unix:path=/run/systemd/private"); - if (r < 0) - return r; - - r = sd_bus_start(bus); - if (r < 0) - return sd_bus_open_system(_bus); - - r = bus_check_peercred(bus); - if (r < 0) - return r; - - *_bus = bus; - bus = NULL; - - return 0; -} - -int bus_open_user_systemd(sd_bus **_bus) { - _cleanup_bus_unref_ sd_bus *bus = NULL; - _cleanup_free_ char *ee = NULL; - const char *e; - int r; - - /* Try via kdbus first, and then directly */ - - assert(_bus); - -#ifdef ENABLE_KDBUS - r = sd_bus_new(&bus); - if (r < 0) - return r; - - if (asprintf(&bus->address, KERNEL_USER_BUS_FMT, (unsigned long) getuid()) < 0) - return -ENOMEM; - - bus->bus_client = true; - - r = sd_bus_start(bus); - if (r >= 0) { - *_bus = bus; - bus = NULL; - return 0; - } - - bus = sd_bus_unref(bus); -#endif - - e = secure_getenv("XDG_RUNTIME_DIR"); - if (!e) - return sd_bus_open_user(_bus); - - ee = bus_address_escape(e); - if (!ee) - return -ENOMEM; - - r = sd_bus_new(&bus); - if (r < 0) - return r; - - bus->address = strjoin("unix:path=", ee, "/systemd/private", NULL); - if (!bus->address) - return -ENOMEM; - - r = sd_bus_start(bus); - if (r < 0) - return sd_bus_open_user(_bus); - - r = bus_check_peercred(bus); - if (r < 0) - return r; - - *_bus = bus; - bus = NULL; - - return 0; -} - -int bus_print_property(const char *name, sd_bus_message *property, bool all) { - char type; - const char *contents; - int r; - - assert(name); - assert(property); - - r = sd_bus_message_peek_type(property, &type, &contents); - if (r < 0) - return r; - - switch (type) { - - case SD_BUS_TYPE_STRING: { - const char *s; - - r = sd_bus_message_read_basic(property, type, &s); - if (r < 0) - return r; - - if (all || !isempty(s)) - printf("%s=%s\n", name, s); - - return 1; - } - - case SD_BUS_TYPE_BOOLEAN: { - bool b; - - r = sd_bus_message_read_basic(property, type, &b); - if (r < 0) - return r; - - printf("%s=%s\n", name, yes_no(b)); - - return 1; - } - - case SD_BUS_TYPE_UINT64: { - uint64_t u; - - r = sd_bus_message_read_basic(property, type, &u); - if (r < 0) - return r; - - /* Yes, heuristics! But we can change this check - * should it turn out to not be sufficient */ - - if (endswith(name, "Timestamp")) { - char timestamp[FORMAT_TIMESTAMP_MAX], *t; - - t = format_timestamp(timestamp, sizeof(timestamp), u); - if (t || all) - printf("%s=%s\n", name, strempty(t)); - - } else if (strstr(name, "USec")) { - char timespan[FORMAT_TIMESPAN_MAX]; - - printf("%s=%s\n", name, format_timespan(timespan, sizeof(timespan), u, 0)); - } else - printf("%s=%llu\n", name, (unsigned long long) u); - - return 1; - } - - case SD_BUS_TYPE_UINT32: { - uint32_t u; - - r = sd_bus_message_read_basic(property, type, &u); - if (r < 0) - return r; - - if (strstr(name, "UMask") || strstr(name, "Mode")) - printf("%s=%04o\n", name, u); - else - printf("%s=%u\n", name, (unsigned) u); - - return 1; - } - - case SD_BUS_TYPE_INT32: { - int32_t i; - - r = sd_bus_message_read_basic(property, type, &i); - if (r < 0) - return r; - - printf("%s=%i\n", name, (int) i); - return 1; - } - - case SD_BUS_TYPE_DOUBLE: { - double d; - - r = sd_bus_message_read_basic(property, type, &d); - if (r < 0) - return r; - - printf("%s=%g\n", name, d); - return 1; - } - - case SD_BUS_TYPE_ARRAY: - if (streq(contents, "s")) { - bool first = true; - const char *str; - - r = sd_bus_message_enter_container(property, SD_BUS_TYPE_ARRAY, contents); - if (r < 0) - return r; - - while((r = sd_bus_message_read_basic(property, SD_BUS_TYPE_STRING, &str)) > 0) { - if (first) - printf("%s=", name); - - printf("%s%s", first ? "" : " ", str); - - first = false; - } - if (r < 0) - return r; - - if (first && all) - printf("%s=", name); - if (!first || all) - puts(""); - - r = sd_bus_message_exit_container(property); - if (r < 0) - return r; - - return 1; - - } else if (streq(contents, "y")) { - const uint8_t *u; - size_t n; - - r = sd_bus_message_read_array(property, SD_BUS_TYPE_BYTE, (const void**) &u, &n); - if (r < 0) - return r; - - if (all || n > 0) { - unsigned int i; - - printf("%s=", name); - - for (i = 0; i < n; i++) - printf("%02x", u[i]); - - puts(""); - } - - return 1; - - } else if (streq(contents, "u")) { - uint32_t *u; - size_t n; - - r = sd_bus_message_read_array(property, SD_BUS_TYPE_UINT32, (const void**) &u, &n); - if (r < 0) - return r; - - if (all || n > 0) { - unsigned int i; - - printf("%s=", name); - - for (i = 0; i < n; i++) - printf("%08x", u[i]); - - puts(""); - } - - return 1; - } - - break; - } - - return 0; -} - -int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, char **filter, bool all) { - _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; - _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; - int r; - - assert(bus); - assert(path); - - r = sd_bus_call_method(bus, - dest, - path, - "org.freedesktop.DBus.Properties", - "GetAll", - &error, - &reply, - "s", ""); - if (r < 0) - return r; - - r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}"); - if (r < 0) - return r; - - while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { - const char *name; - const char *contents; - - r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &name); - if (r < 0) - return r; - - if (!filter || strv_find(filter, name)) { - r = sd_bus_message_peek_type(reply, NULL, &contents); - if (r < 0) - return r; - - r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents); - if (r < 0) - return r; - - r = bus_print_property(name, reply, all); - if (r < 0) - return r; - if (r == 0) { - if (all) - printf("%s=[unprintable]\n", name); - /* skip what we didn't read */ - r = sd_bus_message_skip(reply, contents); - if (r < 0) - return r; - } - - r = sd_bus_message_exit_container(reply); - if (r < 0) - return r; - } else { - r = sd_bus_message_skip(reply, "v"); - if (r < 0) - return r; - } - - r = sd_bus_message_exit_container(reply); - if (r < 0) - return r; - } - if (r < 0) - return r; - - r = sd_bus_message_exit_container(reply); - if (r < 0) - return r; - - return 0; -} - -int bus_map_id128(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { - sd_id128_t *p = userdata; - const void *v; - size_t n; - int r; - - r = sd_bus_message_read_array(m, SD_BUS_TYPE_BYTE, &v, &n); - if (r < 0) - return r; - - if (n == 0) - *p = SD_ID128_NULL; - else if (n == 16) - memcpy((*p).bytes, v, n); - else - return -EINVAL; - - return 0; -} - -static int map_basic(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { - char type; - int r; - - r = sd_bus_message_peek_type(m, &type, NULL); - if (r < 0) - return r; - - switch (type) { - case SD_BUS_TYPE_STRING: { - const char *s; - char *str; - char **p = userdata; - - r = sd_bus_message_read_basic(m, type, &s); - if (r < 0) - break; - - if (isempty(s)) - break; - - str = strdup(s); - if (!str) { - r = -ENOMEM; - break; - } - free(*p); - *p = str; - - break; - } - - case SD_BUS_TYPE_ARRAY: { - _cleanup_strv_free_ char **l = NULL; - char ***p = userdata; - - r = bus_message_read_strv_extend(m, &l); - if (r < 0) - break; - - strv_free(*p); - *p = l; - l = NULL; - - break; - } - - case SD_BUS_TYPE_BOOLEAN: { - unsigned b; - bool *p = userdata; - - r = sd_bus_message_read_basic(m, type, &b); - if (r < 0) - break; - - *p = b; - - break; - } - - case SD_BUS_TYPE_UINT32: { - uint64_t u; - uint32_t *p = userdata; - - r = sd_bus_message_read_basic(m, type, &u); - if (r < 0) - break; - - *p = u; - - break; - } - - case SD_BUS_TYPE_UINT64: { - uint64_t t; - uint64_t *p = userdata; - - r = sd_bus_message_read_basic(m, type, &t); - if (r < 0) - break; - - *p = t; - - break; - } - - default: - break; - } - - return r; -} - -int bus_map_all_properties(sd_bus *bus, - const char *destination, - const char *path, - const struct bus_properties_map *map, - void *userdata) { - _cleanup_bus_message_unref_ sd_bus_message *m = NULL; - _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; - int r; - - assert(bus); - assert(destination); - assert(path); - assert(map); - - r = sd_bus_call_method( - bus, - destination, - path, - "org.freedesktop.DBus.Properties", - "GetAll", - &error, - &m, - "s", ""); - if (r < 0) - return r; - - r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}"); - if (r < 0) - return r; - - while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { - const struct bus_properties_map *prop; - const char *member; - const char *contents; - void *v; - unsigned i; - - r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member); - if (r < 0) - return r; - - for (i = 0, prop = NULL; map[i].member; i++) - if (streq(map[i].member, member)) { - prop = &map[i]; - break; - } - - if (prop) { - r = sd_bus_message_peek_type(m, NULL, &contents); - if (r < 0) - return r; - - r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents); - if (r < 0) - return r; - - v = (uint8_t *)userdata + prop->offset; - if (map[i].set) - r = prop->set(bus, member, m, &error, v); - else - r = map_basic(bus, member, m, &error, v); - if (r < 0) - return r; - - r = sd_bus_message_exit_container(m); - if (r < 0) - return r; - } else { - r = sd_bus_message_skip(m, "v"); - if (r < 0) - return r; - } - - r = sd_bus_message_exit_container(m); - if (r < 0) - return r; - } - - return r; -} - -int bus_open_transport(BusTransport transport, const char *host, bool user, sd_bus **bus) { - int r; - - assert(transport >= 0); - assert(transport < _BUS_TRANSPORT_MAX); - assert(bus); - - assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL); - assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -ENOTSUP); - - switch (transport) { - - case BUS_TRANSPORT_LOCAL: - if (user) - r = sd_bus_default_user(bus); - else - r = sd_bus_default_system(bus); - - break; - - case BUS_TRANSPORT_REMOTE: - r = sd_bus_open_system_remote(host, bus); - break; - - case BUS_TRANSPORT_CONTAINER: - r = sd_bus_open_system_container(host, bus); - break; - - default: - assert_not_reached("Hmm, unknown transport type."); - } - - return r; -} - -int bus_open_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus) { - int r; - - assert(transport >= 0); - assert(transport < _BUS_TRANSPORT_MAX); - assert(bus); - - assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL); - assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -ENOTSUP); - - switch (transport) { - - case BUS_TRANSPORT_LOCAL: - if (user) - r = bus_open_user_systemd(bus); - else - r = bus_open_system_systemd(bus); - - break; - - case BUS_TRANSPORT_REMOTE: - r = sd_bus_open_system_remote(host, bus); - break; - - case BUS_TRANSPORT_CONTAINER: - r = sd_bus_open_system_container(host, bus); - break; - - default: - assert_not_reached("Hmm, unknown transport type."); - } - - return r; -} - -int bus_property_get_tristate( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - int *tristate = userdata; - - return sd_bus_message_append(reply, "b", *tristate > 0); -} - -int bus_property_get_bool( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - int b = *(bool*) userdata; - - return sd_bus_message_append_basic(reply, 'b', &b); -} - -#if __SIZEOF_SIZE_T__ != 8 -int bus_property_get_size( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - uint64_t sz = *(size_t*) userdata; - - return sd_bus_message_append_basic(reply, 't', &sz); -} -#endif - -#if __SIZEOF_LONG__ != 8 -int bus_property_get_long( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - int64_t l = *(long*) userdata; - - return sd_bus_message_append_basic(reply, 'x', &l); -} - -int bus_property_get_ulong( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - uint64_t ul = *(unsigned long*) userdata; - - return sd_bus_message_append_basic(reply, 't', &ul); -} -#endif - -int bus_log_parse_error(int r) { - log_error("Failed to parse message: %s", strerror(-r)); - return r; -} - -int bus_log_create_error(int r) { - log_error("Failed to create message: %s", strerror(-r)); - return r; -} - -int bus_parse_unit_info(sd_bus_message *message, UnitInfo *u) { - assert(message); - assert(u); - - return sd_bus_message_read( - message, - "(ssssssouso)", - &u->id, - &u->description, - &u->load_state, - &u->active_state, - &u->sub_state, - &u->following, - &u->unit_path, - &u->job_id, - &u->job_type, - &u->job_path); -} - -int bus_maybe_reply_error(sd_bus_message *m, int r, sd_bus_error *error) { - assert(m); - - if (r < 0) { - if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL) - sd_bus_reply_method_errno(m, r, error); - - } else if (sd_bus_error_is_set(error)) { - if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL) - sd_bus_reply_method_error(m, error); - } else - return r; - - log_debug("Failed to process message [type=%s sender=%s path=%s interface=%s member=%s signature=%s]: %s", - bus_message_type_to_string(m->header->type), - strna(m->sender), - strna(m->path), - strna(m->interface), - strna(m->member), - strna(m->root_container.signature), - bus_error_message(error, r)); - - return 1; -} |