X-Git-Url: https://uglyman.kremlin.cc/gitweb/gitweb.cgi?p=systembsd.git;a=blobdiff_plain;f=src%2Finterfaces%2Fhostnamed%2Fhostnamed.c;h=b10b4b767b63abd19cbcd61922287ad7b4fe4c3e;hp=38d811cd952f078a59f3442a967574a0edb058a1;hb=9cab3afefa9bfbffe655438c39cefd1be9e26baa;hpb=a2fffc07173bab908d10ac2d66f73d33f085c601 diff --git a/src/interfaces/hostnamed/hostnamed.c b/src/interfaces/hostnamed/hostnamed.c index 38d811c..b10b4b7 100644 --- a/src/interfaces/hostnamed/hostnamed.c +++ b/src/interfaces/hostnamed/hostnamed.c @@ -17,16 +17,60 @@ #include #include #include +#include #include -#include +#include +#include +#include +#include + +#include #include #include +#include #include "hostnamed-gen.h" #include "hostnamed.h" +/* format: { + * (1) string to be matched against runtime machine's sysctl output. + * can be either the exact string or a substring contained + * within sysctl strings. no "guesses" here, a match should + * reliably indicate the chassis/icon. + * + * (2) string describing chassis type divulged by (1). + * must be one of "desktop", "laptop", "server", + * "tablet", "handset", "vm", "container" or NULL + * if only icon string can be ascertained. "vm" refers + * to operating systems running on baremetal hypervisors + * (hardware virtualization, like XEN) while "container" + * refers to OSs running on shared hypervisors like + * virtualbox or VMware. consider the distinction carefully + * as common virtualization software like KVM may share + * characteristics of both "vm" and "container" types. + * + * (3) string specifying icon to use. follows XDG icon spec. + * see http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html + * for allowed strings. + * + * (4) chassis precedence bit. TRUE if (2) is defined and + * we're certain it is the proper string. FALSE in the + * circumstance (2) may be the correct string, unless + * a match with this bit set to TRUE overrides it. + * if (2) is NULL, this bit is inconsequential. + * + * (5) icon precedence bit. see previous definition. + * } */ +struct SYSCTL_LOOKUP_TABLE { + gchar *match_string; + gchar *chassis; + gchar *icon; + gboolean chassis_precedence; + gboolean icon_precedence; +}; + GPtrArray *hostnamed_freeable; Hostname1 *hostnamed_interf; @@ -35,14 +79,79 @@ 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", "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 }, /* 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[] = { + "hppa", + "sparc", + "sparc64" +}; + /* --- begin method/property/dbus signal code --- */ +/* TODO the extra boolean passed to these funcs is for policykit auth */ +/* TODO complete call with error, message, etc */ 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; + gboolean policykit_auth, ret; + size_t check_length; + + proposed_hostname = NULL; + ret = FALSE; + + params = g_dbus_method_invocation_get_parameters(invoc); + g_variant_get(params, "(sb)", &proposed_hostname, &policykit_auth); + + if(proposed_hostname && (valid_hostname_buf = g_hostname_to_ascii(proposed_hostname))) { + + check_length = strnlen(proposed_hostname, MAXHOSTNAMELEN + 1); + + if(check_length > MAXHOSTNAMELEN) + g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ENAMETOOLONG", "Hostname string exceeded maximum length."); + + else if(sethostname(proposed_hostname, check_length)) + g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EACCES", "Insufficient permissions to change hostname."); + + else { + HOSTNAME = proposed_hostname; + hostname1_set_hostname(hn1_passed_interf, HOSTNAME); + ret = TRUE; + hostname1_complete_set_hostname(hn1_passed_interf, invoc); + } + } + + if(proposed_hostname) + g_free(proposed_hostname); + if(valid_hostname_buf) + g_free(valid_hostname_buf); + + return ret; } static gboolean @@ -86,58 +195,41 @@ on_handle_set_icon_name(Hostname1 *hn1_passed_interf, const gchar * our_get_hostname() { - gchar *hostname_buf, *ret; - size_t hostname_divider; + gchar *hostname_buf; + hostname_buf = (gchar *)g_malloc0(MAXHOSTNAMELEN); - hostname_buf = (gchar*) g_malloc0(MAXHOSTNAMELEN); - ret = (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() { - gchar *pretty_hostname; - 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, ret); - return ret; - } - - return ret; + return "localhost.home.network"; } const gchar * our_get_pretty_hostname() { - GKeyFile *config; - gchar *ret; - - 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_free(config); - return ret; - } - - if(config) - g_free(config); + if(PRETTY_HOSTNAME) + return PRETTY_HOSTNAME; return ""; } @@ -145,50 +237,65 @@ our_get_pretty_hostname() { const gchar * our_get_chassis() { - return "TODO"; + if(CHASSIS) + return CHASSIS; + + return "desktop"; /* this leads to the most generic beheivor in the unlikely case its returned */ } const gchar * our_get_icon_name() { - return "TODO"; + if(ICON) + return ICON; + + return ""; } 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); @@ -288,11 +395,21 @@ void set_signal_handlers() { } int main() { - + + 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() || !set_uname_properties() || !set_names()) + return 1; + hostnamed_loop = g_main_loop_new(NULL, TRUE); - hostnamed_freeable = g_ptr_array_new(); bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM, "org.freedesktop.hostname1", @@ -316,49 +433,233 @@ int main() { return 0; } -/* TODO figure out DMI variables on obsd */ -/*static gchar *guess_icon_name() { +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; + + char *hwproduct, *hwmodel, *hwvendor, *hwmachine; + size_t hwproduct_size, hwmodel_size, hwvendor_size, hwmachine_size; + int hwproduct_name[2], hwmodel_name[2], hwvendor_name[2], hwmachine_name[2]; + unsigned int i; + gboolean UNSURE_CHASSIS_FLAG, UNSURE_ICON_FLAG; + + hwproduct_size = hwmodel_size = hwvendor_size = hwmachine_size = bufsize; + UNSURE_CHASSIS_FLAG = UNSURE_ICON_FLAG = FALSE; + i = 0; + + hwproduct = (char*)g_malloc0(4096); + hwmodel = (char*)g_malloc0(4096); + 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; + + hwmodel_name[0] = CTL_HW; + hwmodel_name[1] = HW_MODEL; + + hwvendor_name[0] = CTL_HW; + hwvendor_name[1] = HW_VENDOR; + + hwmachine_name[0] = CTL_HW; + hwmachine_name[1] = HW_MACHINE; + + /* pass NULL buffer to check size first, then pass hw to be filled according to freshly-set hw_size */ + if(-1 == sysctl(hwproduct_name, 2, NULL, &hwproduct_size, NULL, 0) || -1 == sysctl(hwproduct_name, 2, hwproduct, &hwproduct_size, NULL, 0)) + return FALSE; + + if(-1 == sysctl(hwmodel_name, 2, NULL, &hwmodel_size, NULL, 0) || -1 == sysctl(hwmodel_name, 2, hwmodel, &hwmodel_size, NULL, 0)) + return FALSE; + + if(-1 == sysctl(hwvendor_name, 2, NULL, &hwvendor_size, NULL, 0) || -1 == sysctl(hwvendor_name, 2, hwvendor, &hwvendor_size, NULL, 0)) + return FALSE; + + if(-1 == sysctl(hwmachine_name, 2, NULL, &hwmachine_size, NULL, 0) || -1 == sysctl(hwmachine_name, 2, hwmachine, &hwmachine_size, NULL, 0)) + return FALSE; + + /* TODO: test for laptop, if not, dmidecode for desktop vs. server + * probably move this code to vm test func and set a global after running it early, once */ + + for(; i < G_N_ELEMENTS(chassis_indicator_table); i++) { + if(strcasestr(hwproduct, chassis_indicator_table[i].match_string) + || strcasestr(hwmodel, chassis_indicator_table[i].match_string) + || strcasestr(hwvendor, chassis_indicator_table[i].match_string)) { + + if(!UNSURE_CHASSIS_FLAG && chassis_indicator_table[i].chassis) { + + UNSURE_CHASSIS_FLAG = chassis_indicator_table[i].chassis_precedence; + CHASSIS = chassis_indicator_table[i].chassis; + } + + if(!UNSURE_ICON_FLAG && chassis_indicator_table[i].icon) { + + UNSURE_ICON_FLAG = chassis_indicator_table[i].icon_precedence; + ICON = chassis_indicator_table[i].icon; + } + } + } - gchar *filebuf = NULL; - gchar *ret = NULL; + if(up_native_is_laptop()) { - #if defined(__i386__) || defined(__x86_64__) + if(!CHASSIS) + CHASSIS = "laptop"; + if(!ICON) + ICON = "input-touchpad"; /* TODO pull an icon package that actually has the icons we're looking for */ + + } else if(is_server(hwmachine)) { + + if(!CHASSIS) + CHASSIS = "server"; + if(!ICON) + ICON = "uninterruptible-power-supply"; + + } else if(!CHASSIS || !ICON) { + + if(!CHASSIS) + CHASSIS = "desktop"; + if(!ICON) + ICON = "computer"; + } + + return (CHASSIS && ICON); +} + +gboolean is_server(gchar *arch) { - Taken with a few minor changes from systemd's hostnamed.c, - copyright 2011 Lennart Poettering. - - See the SMBIOS Specification 2.7.1 section 7.4.1 for - details about the values listed here: - - http://www.dmtf.org/sites/default/files/standards/documents/DSP0134_2.7.1.pdf - - - if (g_file_get_contents ("/sys/class/dmi/id/chassis_type", &filebuf, NULL, NULL)) { - switch (g_ascii_strtoull (filebuf, NULL, 10)) { - case 0x3: - case 0x4: - case 0x5: - case 0x6: - case 0x7: - ret = g_strdup ("computer-desktop"); - goto out; - case 0x9: - case 0xA: - case 0xE: - ret = g_strdup ("computer-laptop"); - goto out; - case 0x11: - case 0x17: - case 0x1C: - case 0x1D: - ret = g_strdup ("computer-server"); - goto out; + unsigned int i; + + for(; i < G_N_ELEMENTS(server_archs); i++) + if(strcasestr(arch, server_archs[i])) + return TRUE; + + return FALSE; +} + +gboolean up_native_is_laptop() { + + struct apm_power_info bstate; + struct sensordev acpiac; + + if (up_native_get_sensordev("acpiac0", &acpiac)) + return TRUE; + + if (-1 == ioctl(up_apm_get_fd(), APM_IOC_GETPOWER, &bstate)) + g_error("ioctl on apm fd failed : %s", g_strerror(errno)); + + return bstate.ac_state != APM_AC_UNKNOWN; +} + +int up_apm_get_fd() { + + static int apm_fd = 0; + + if(apm_fd == 0) { + + g_debug("apm_fd is not initialized yet, opening"); + + /* open /dev/apm */ + if((apm_fd = open("/dev/apm", O_RDONLY)) == -1) { + if(errno != ENXIO && errno != ENOENT) + g_error("cannot open device file"); } } - #endif - ret = g_strdup ("computer"); - out: - g_free (filebuf); - return ret; -}*/ + return apm_fd; +} + +gboolean up_native_get_sensordev(const char * id, struct sensordev * snsrdev) { + + int devn; + size_t sdlen = sizeof(struct sensordev); + int mib[] = {CTL_HW, HW_SENSORS, 0, 0 ,0}; + + for (devn = 0 ; ; devn++) { + mib[2] = devn; + if(sysctl(mib, 3, snsrdev, &sdlen, NULL, 0) == -1) { + if(errno == ENXIO) + continue; + if(errno == ENOENT) + break; + } + + if (!strcmp(snsrdev->xname, id)) + return TRUE; + } + + return FALSE; +}