X-Git-Url: https://uglyman.kremlin.cc/gitweb/gitweb.cgi?a=blobdiff_plain;f=src%2Finterfaces%2Fhostnamed%2Fhostnamed.c;h=de06bf94b188b234fe9fa100d5c44bf731522a3e;hb=05125e835e7a6ae2a0e1ba900e474216ec704429;hp=e7edd7e6a69b00586925976ea46b404eaa457aa3;hpb=5ac7f54296c8986b0be822ec8034ef8b265914d2;p=systembsd.git diff --git a/src/interfaces/hostnamed/hostnamed.c b/src/interfaces/hostnamed/hostnamed.c index e7edd7e..de06bf9 100644 --- a/src/interfaces/hostnamed/hostnamed.c +++ b/src/interfaces/hostnamed/hostnamed.c @@ -23,17 +23,19 @@ #include #include #include +#include #include #include #include -/* #include */ +#include #include "hostnamed-gen.h" #include "hostnamed.h" -/* add any sysctl strings that suggest virtualization here */ +#include "../../polkit-auth.h" + /* format: { * (1) string to be matched against runtime machine's sysctl output. * can be either the exact string or a substring contained @@ -79,22 +81,27 @@ GMainLoop *hostnamed_loop; guint bus_descriptor; gboolean dbus_interface_exported; /* reliable because of gdbus operational guarantees */ +gchar *HOSTNAME, *STATIC_HOSTNAME, *PRETTY_HOSTNAME; gchar *CHASSIS, *ICON; +gchar *KERN_NAME, *KERN_RELEASE, *KERN_VERS, *OS_CPENAME; /* TODO no specific vm or laptop icon in gnome * NOTE paravirtualization on xen is only available for linuxes right now * dmesg on linux systems reveals xen and virtualization method (HVM or PVM) * but we will worry about those later */ + +/* add any sysctl strings that suggest virtualization here */ const struct SYSCTL_LOOKUP_TABLE chassis_indicator_table[] = { - { "QEMU Virtual CPU", "container", NULL, FALSE, FALSE }, /* could be QEMU running in userspace or as part of KVM */ + { "QEMU Virtual CPU", "vm", NULL, FALSE, FALSE }, /* could be QEMU running in userspace or as part of KVM */ { "KVM", "vm", "drive-multidisk", FALSE, FALSE }, - { "SmartDC HVM", "vm", "drive-multidisk", TRUE, TRUE }, /* oracle solaris kvm */ - { "VirtualBox", "container", "drive-optical", TRUE, TRUE }, - { "VMware, Inc.", "container", "drive-optical", TRUE, TRUE }, - { "VMware Virtual Platform", "container", "drive-optical", TRUE, TRUE }, - { "Parallels", "container", "drive-optical", TRUE, TRUE } /* need verification */ -}; + { "SmartDC HVM", "vm", "drive-multidisk", TRUE, TRUE }, /* illumos-joyent kvm */ + { "VirtualBox", "vm", "drive-multidisk", TRUE, TRUE }, + { "VMware, Inc.", "vm", "drive-multidisk", TRUE, TRUE }, + { "VMware Virtual Platform", "vm", "drive-multidisk", TRUE, TRUE }, + { "Parallels", "vm", "drive-multidisk", TRUE, TRUE }, /* need verification */ + { "Xen", "vm", "drive-multidisk", FALSE, FALSE } +}; /* TODO: chroots, etc. are the actual "containers", add them */ /* archs to check against when determining if machine is server */ const gchar *server_archs[] = { @@ -105,12 +112,81 @@ const gchar *server_archs[] = { /* --- begin method/property/dbus signal code --- */ +/* TODO free some strings here */ static gboolean on_handle_set_hostname(Hostname1 *hn1_passed_interf, GDBusMethodInvocation *invoc, const gchar *greet, gpointer data) { - return FALSE; + GVariant *params; + gchar *proposed_hostname, *valid_hostname_buf; + const gchar *bus_name; + gboolean policykit_auth, ret, try_to_set; + size_t check_length; + check_auth_result is_authed; + + proposed_hostname = NULL; + ret = try_to_set = FALSE; + + params = g_dbus_method_invocation_get_parameters(invoc); + g_variant_get(params, "(sb)", &proposed_hostname, &policykit_auth); + bus_name = g_dbus_method_invocation_get_sender(invoc); + + /* verify caller has correct permissions via polkit */ + is_authed = polkit_try_auth(bus_name, "org.freedesktop.hostname1.SetHostname", policykit_auth); + + switch(is_authed) { + + case AUTHORIZED_NATIVELY: + case AUTHORIZED_BY_PROMPT: + try_to_set = TRUE; + break; + + case UNAUTHORIZED_NATIVELY: + case UNAUTHORIZED_FAILED_PROMPT: + g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EACCES", "Insufficient permissions to set hostname."); + break; + + case ERROR_BADBUS: + g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EFAULT", "Provided bus name is invalid."); + break; + + case ERROR_BADACTION: + g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EFAULT", "Provided action ID is invalid."); + break; + + case ERROR_GENERIC: + default: + g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set hostname for unknown reason."); + break; + } + + /* verify passed hostname's validity */ + if(try_to_set && proposed_hostname && (valid_hostname_buf = g_hostname_to_ascii(proposed_hostname))) { + + check_length = strnlen(valid_hostname_buf, MAXHOSTNAMELEN + 1); + + if(check_length > MAXHOSTNAMELEN) { + + g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ENAMETOOLONG", "Hostname string exceeded maximum length."); + g_free(valid_hostname_buf); + + } else if(sethostname(proposed_hostname, check_length)) { + + g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set hostname for unknown reason."); + g_free(valid_hostname_buf); + + } else { + + HOSTNAME = valid_hostname_buf; + hostname1_set_hostname(hn1_passed_interf, HOSTNAME); + g_ptr_array_add(hostnamed_freeable, valid_hostname_buf); + ret = TRUE; + hostname1_complete_set_hostname(hn1_passed_interf, invoc); + } + } + + return ret; } static gboolean @@ -154,60 +230,41 @@ on_handle_set_icon_name(Hostname1 *hn1_passed_interf, const gchar * our_get_hostname() { - gchar *hostname_buf, *ret; - size_t hostname_divider; - - hostname_buf = (gchar*) g_malloc0(MAXHOSTNAMELEN); - ret = (gchar*) g_malloc0(MAXHOSTNAMELEN); + gchar *hostname_buf; + hostname_buf = (gchar *)g_malloc0(MAXHOSTNAMELEN); - g_ptr_array_add(hostnamed_freeable, hostname_buf); - g_ptr_array_add(hostnamed_freeable, ret); + if(gethostname(hostname_buf, MAXHOSTNAMELEN)) + return "localhost.home.network"; /* TODO bomb out here probably */ + + else if(!g_strcmp0(HOSTNAME, hostname_buf)) { - if(gethostname(hostname_buf, MAXHOSTNAMELEN) || g_strcmp0(hostname_buf, "") == 0) - return "localhost"; + g_free(hostname_buf); + return HOSTNAME; + } - hostname_divider = strcspn(hostname_buf, "."); + g_ptr_array_add(hostnamed_freeable, hostname_buf); + HOSTNAME = hostname_buf; + hostname1_set_hostname(hostnamed_interf, HOSTNAME); - return strncpy(ret, hostname_buf, hostname_divider); + return HOSTNAME; } const gchar * our_get_static_hostname() { - const gchar *pretty_hostname; - const gchar *ret; - - pretty_hostname = our_get_pretty_hostname(); - - if(g_strcmp0(pretty_hostname, "") == 0) - ret = our_get_hostname(); + if(STATIC_HOSTNAME && g_strcmp0(STATIC_HOSTNAME, "")) + return STATIC_HOSTNAME; + else if(HOSTNAME) + return HOSTNAME; - else if((ret = g_hostname_to_ascii(pretty_hostname))) { - - g_ptr_array_add(hostnamed_freeable, (gpointer)ret); - return ret; - } - - return ret; + return "localhost.home.network"; } const gchar * our_get_pretty_hostname() { - GKeyFile *config; - gchar *ret; - - config = g_key_file_new(); - - if(g_key_file_load_from_file(config, "/etc/systemd_compat.conf", G_KEY_FILE_NONE, NULL) - && (ret = g_key_file_get_value(config, "hostnamed", "PrettyHostname", NULL))) { /* ret might need to be freed, docs dont specify but i am suspicious */ - - g_key_file_unref(config); - return ret; - } - - if(config) - g_free(config); + if(PRETTY_HOSTNAME) + return PRETTY_HOSTNAME; return ""; } @@ -218,7 +275,7 @@ our_get_chassis() { if(CHASSIS) return CHASSIS; - return "desktop"; + return "desktop"; /* this leads to the most generic beheivor in the unlikely case its returned */ } const gchar * @@ -233,38 +290,47 @@ our_get_icon_name() { const gchar * our_get_kernel_name() { - return "TODO"; + if(KERN_NAME) + return KERN_NAME; + + return ""; } const gchar * our_get_kernel_version() { - return "TODO"; + if(KERN_VERS) + return KERN_VERS; + + return ""; } const gchar * our_get_kernel_release() { - return "TODO"; + if(KERN_RELEASE) + return KERN_RELEASE; + + return ""; } const gchar * our_get_os_cpename() { - return "TODO"; + return "ONEDAY"; } const gchar * our_get_os_pretty_name() { - return "TODO"; + return "OpenBSD"; } /* --- end method/property/dbus signal code, begin bus/name handlers --- */ static void hostnamed_on_bus_acquired(GDBusConnection *conn, - const gchar *name, - gpointer user_data) { + const gchar *name, + gpointer user_data) { g_printf("got bus/name, exporting %s's interface...\n", name); @@ -364,16 +430,21 @@ void set_signal_handlers() { } int main() { - - /* TODO: check for valid, writable config at init. if no, complain to `make install` */ + hostnamed_freeable = g_ptr_array_new(); + + /* TODO: check for valid, writable config at init. if no, complain to `make install` */ + + CHASSIS = ICON = OS_CPENAME = 0; + KERN_NAME = KERN_RELEASE = KERN_VERS = 0; + HOSTNAME = STATIC_HOSTNAME = PRETTY_HOSTNAME = NULL; + set_signal_handlers(); - if(!determine_chassis_and_icon()) + if(!determine_chassis_and_icon() || !set_uname_properties() || !set_names()) return 1; - hostnamed_loop = g_main_loop_new(NULL, TRUE); - hostnamed_freeable = g_ptr_array_new(); + hostnamed_loop = g_main_loop_new(NULL, TRUE); bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM, "org.freedesktop.hostname1", @@ -397,6 +468,76 @@ int main() { return 0; } +gboolean set_names() { + + /* (1) set up */ + gchar *hostname_buf, *static_hostname_buf, *pretty_hostname_buf; + GKeyFile *config; + size_t hostname_divider; + + hostname_buf = (gchar*) g_malloc0(MAXHOSTNAMELEN); + static_hostname_buf = (gchar*) g_malloc0(4096); + pretty_hostname_buf = (gchar*) g_malloc0(4096); + + config = g_key_file_new(); + + g_ptr_array_add(hostnamed_freeable, hostname_buf); + g_ptr_array_add(hostnamed_freeable, static_hostname_buf); + g_ptr_array_add(hostnamed_freeable, pretty_hostname_buf); + + /* (2) set HOSTNAME */ + if(gethostname(hostname_buf, MAXHOSTNAMELEN) || !g_strcmp0(hostname_buf, "")) + HOSTNAME = "localhost"; + + HOSTNAME = hostname_buf; + + /* this bit gets you the /etc/myname style hostname + hostname_divider = strcspn(hostname_buf, "."); + strncpy(ret, hostname_buf, hostname_divider); */ + + /* (3) set PRETTY_HOSTNAME */ + if(g_key_file_load_from_file(config, "/etc/systemd_compat.conf", G_KEY_FILE_NONE, NULL) + && (pretty_hostname_buf = g_key_file_get_value(config, "hostnamed", "PrettyHostname", NULL))) + PRETTY_HOSTNAME = pretty_hostname_buf; + else + PRETTY_HOSTNAME = ""; + + if(config) + g_key_file_unref(config); + + /* (4) set STATIC_HOSTNAME */ + if(!g_strcmp0(PRETTY_HOSTNAME, "")) + STATIC_HOSTNAME = HOSTNAME; + + else if((static_hostname_buf = g_hostname_to_ascii(PRETTY_HOSTNAME))) + STATIC_HOSTNAME = static_hostname_buf; + + return (HOSTNAME && STATIC_HOSTNAME && PRETTY_HOSTNAME) ? TRUE : FALSE; + +} + +gboolean set_uname_properties() { + + struct utsname un; + + if(-1 == uname(&un)) + return FALSE; + + KERN_NAME = (gchar*)g_malloc0(sizeof(un.sysname)); + g_ptr_array_add(hostnamed_freeable, KERN_NAME); + g_strlcpy(KERN_NAME, un.sysname, sizeof(un.sysname)); + + KERN_RELEASE = (gchar*)g_malloc0(sizeof(un.release)); + g_ptr_array_add(hostnamed_freeable, KERN_RELEASE); + g_strlcpy(KERN_RELEASE, un.release, sizeof(un.release)); + + KERN_VERS = (gchar*)g_malloc0(sizeof(un.version)); + g_ptr_array_add(hostnamed_freeable, KERN_VERS); + g_strlcpy(KERN_VERS, un.version, sizeof(un.version)); + + return TRUE; +} + gboolean determine_chassis_and_icon() { const size_t bufsize = 4096; @@ -416,6 +557,11 @@ gboolean determine_chassis_and_icon() { hwvendor = (char*)g_malloc0(4096); hwmachine = (char*)g_malloc0(4096); + g_ptr_array_add(hostnamed_freeable, hwproduct); + g_ptr_array_add(hostnamed_freeable, hwmodel); + g_ptr_array_add(hostnamed_freeable, hwvendor); + g_ptr_array_add(hostnamed_freeable, hwmachine); + hwproduct_name[0] = CTL_HW; hwproduct_name[1] = HW_PRODUCT;