X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flogin%2Flogind-user-dbus.c;h=af6392e02570ec8ac5a9985f418179ed2a383d88;hp=e811b37369d3598390e0caab2dc459235ace4298;hb=9648de5798eee557bd0ff8acaf3712ddcd7c22e3;hpb=b298e98413a8bd112f0f7bd91a0dff3e7e931424 diff --git a/src/login/logind-user-dbus.c b/src/login/logind-user-dbus.c index e811b3736..af6392e02 100644 --- a/src/login/logind-user-dbus.c +++ b/src/login/logind-user-dbus.c @@ -1,5 +1,3 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - /*** This file is part of systemd. @@ -22,10 +20,14 @@ #include #include -#include "strv.h" +#include "alloc-util.h" #include "bus-util.h" -#include "logind.h" +#include "formats-util.h" #include "logind-user.h" +#include "logind.h" +#include "signal-util.h" +#include "strv.h" +#include "user-util.h" static int property_get_display( sd_bus *bus, @@ -102,11 +104,7 @@ static int property_get_sessions( } - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - - return 1; + return sd_bus_message_close_container(reply); } static int property_get_idle_hint( @@ -137,7 +135,7 @@ static int property_get_idle_since_hint( sd_bus_error *error) { User *u = userdata; - dual_timestamp t; + dual_timestamp t = DUAL_TIMESTAMP_NULL; uint64_t k; assert(bus); @@ -171,14 +169,27 @@ static int property_get_linger( return sd_bus_message_append(reply, "b", r > 0); } -static int method_terminate(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { +int bus_user_method_terminate(sd_bus_message *message, void *userdata, sd_bus_error *error) { User *u = userdata; int r; - assert(bus); assert(message); assert(u); + r = bus_verify_polkit_async( + message, + CAP_KILL, + "org.freedesktop.login1.manage", + NULL, + false, + u->uid, + &u->manager->polkit_registry, + error); + if (r < 0) + return r; + if (r == 0) + return 1; /* Will call us back */ + r = user_stop(u, true); if (r < 0) return r; @@ -186,20 +197,33 @@ static int method_terminate(sd_bus *bus, sd_bus_message *message, void *userdata return sd_bus_reply_method_return(message, NULL); } -static int method_kill(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { +int bus_user_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) { User *u = userdata; int32_t signo; int r; - assert(bus); assert(message); assert(u); + r = bus_verify_polkit_async( + message, + CAP_KILL, + "org.freedesktop.login1.manage", + NULL, + false, + u->uid, + &u->manager->polkit_registry, + error); + if (r < 0) + return r; + if (r == 0) + return 1; /* Will call us back */ + r = sd_bus_message_read(message, "i", &signo); if (r < 0) return r; - if (signo <= 0 || signo >= _NSIG) + if (!SIGNAL_VALID(signo)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo); r = user_kill(u, signo); @@ -221,20 +245,21 @@ const sd_bus_vtable user_vtable[] = { SD_BUS_PROPERTY("Slice", "s", NULL, offsetof(User, slice), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("Display", "(so)", property_get_display, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0), - SD_BUS_PROPERTY("Sessions", "a(so)", property_get_sessions, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + SD_BUS_PROPERTY("Sessions", "a(so)", property_get_sessions, 0, 0), SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("Linger", "b", property_get_linger, 0, 0), - SD_BUS_METHOD("Terminate", NULL, NULL, method_terminate, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)), - SD_BUS_METHOD("Kill", "i", NULL, method_kill, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)), + SD_BUS_METHOD("Terminate", NULL, NULL, bus_user_method_terminate, SD_BUS_VTABLE_UNPRIVILEGED), + SD_BUS_METHOD("Kill", "i", NULL, bus_user_method_kill, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_VTABLE_END }; int user_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { Manager *m = userdata; + uid_t uid; User *user; int r; @@ -245,41 +270,33 @@ int user_object_find(sd_bus *bus, const char *path, const char *interface, void assert(m); if (streq(path, "/org/freedesktop/login1/user/self")) { - _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL; + _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; sd_bus_message *message; - pid_t pid; message = sd_bus_get_current_message(bus); if (!message) return 0; - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_pid(creds, &pid); + r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds); if (r < 0) return r; - r = manager_get_user_by_pid(m, pid, &user); - if (r <= 0) - return 0; + r = sd_bus_creds_get_owner_uid(creds, &uid); } else { - unsigned long lu; const char *p; p = startswith(path, "/org/freedesktop/login1/user/_"); if (!p) return 0; - r = safe_atolu(p, &lu); - if (r < 0) - return 0; - - user = hashmap_get(m->users, ULONG_TO_PTR(lu)); - if (!user) - return 0; + r = parse_uid(p, &uid); } + if (r < 0) + return 0; + + user = hashmap_get(m->users, UID_TO_PTR(uid)); + if (!user) + return 0; *found = user; return 1; @@ -298,6 +315,7 @@ char *user_bus_path(User *u) { int user_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { _cleanup_strv_free_ char **l = NULL; + sd_bus_message *message; Manager *m = userdata; User *user; Iterator i; @@ -319,9 +337,24 @@ int user_node_enumerator(sd_bus *bus, const char *path, void *userdata, char *** return r; } - r = strv_extend(&l, "/org/freedesktop/login1/user/self"); - if (r < 0) - return r; + message = sd_bus_get_current_message(bus); + if (message) { + _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; + uid_t uid; + + r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds); + if (r >= 0) { + r = sd_bus_creds_get_owner_uid(creds, &uid); + if (r >= 0) { + user = hashmap_get(m->users, UID_TO_PTR(uid)); + if (user) { + r = strv_extend(&l, "/org/freedesktop/login1/user/self"); + if (r < 0) + return r; + } + } + } + } *nodes = l; l = NULL;