make SetStaticHostname() call sethostname()
[systembsd.git] / src / interfaces / hostnamed / hostnamed.c
index 19a196cc62929b2cdd346176a9b94ed7c267580f..ec7156f1bab6502e72d8e71b140ebf231e358872 100644 (file)
@@ -34,6 +34,8 @@
 #include "hostnamed-gen.h"
 #include "hostnamed.h"
 
+#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
@@ -110,8 +112,7 @@ const gchar *server_archs[] = {
 
 /* --- 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 */
+/* TODO free some strings here */
 static gboolean
 on_handle_set_hostname(Hostname1 *hn1_passed_interf,
                        GDBusMethodInvocation *invoc,
@@ -119,31 +120,71 @@ on_handle_set_hostname(Hostname1 *hn1_passed_interf,
                        gpointer data) {
     GVariant *params;
     gchar *proposed_hostname, *valid_hostname_buf;
-    gboolean policykit_auth, ret;
-    size_t check_length, bad_length;
+    const gchar *bus_name;
+    gboolean policykit_auth, ret, try_to_set;
+    size_t check_length;
+    check_auth_result is_authed;
 
-    bad_length = MAXHOSTNAMELEN + 1;
     proposed_hostname = NULL;
-    ret = FALSE;
+    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);
 
-    if(proposed_hostname && (valid_hostname_buf = g_hostname_to_ascii(proposed_hostname))) {
+    /* verify caller has correct permissions via polkit */
+    is_authed = polkit_try_auth(bus_name, "org.freedesktop.hostname1.set-hostname", policykit_auth);
 
-        check_length = strnlen(proposed_hostname, bad_length);
+    switch(is_authed) {
 
-        if(check_length < bad_length && !sethostname(proposed_hostname, check_length))
-            ret = TRUE;
+        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;
     }
 
-    if(ret)
-        hostname1_complete_set_hostname(hn1_passed_interf, invoc);
+    /* 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)) {
 
-    if(proposed_hostname)
-        g_free(proposed_hostname);
-    if(valid_hostname_buf)
-        g_free(valid_hostname_buf);
+            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;
 }
@@ -153,7 +194,76 @@ on_handle_set_static_hostname(Hostname1 *hn1_passed_interf,
                               GDBusMethodInvocation *invoc,
                               const gchar *greet,
                               gpointer data) {
-    return FALSE;
+
+    GVariant *params;
+    gchar *proposed_static_hostname, *valid_static_hostname_buf;
+    const gchar *bus_name;
+    gboolean policykit_auth, ret, try_to_set;
+    size_t check_length;
+    check_auth_result is_authed;
+
+    proposed_static_hostname = NULL;
+    ret = try_to_set = FALSE;
+    
+    params = g_dbus_method_invocation_get_parameters(invoc);
+    g_variant_get(params, "(sb)", &proposed_static_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.set-static-hostname", 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 static 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 static hostname for unknown reason.");
+            break;
+    }
+
+    /* verify passed hostname's validity */
+    if(try_to_set && proposed_static_hostname && (valid_static_hostname_buf = g_hostname_to_ascii(proposed_static_hostname))) {
+
+        check_length = strnlen(valid_static_hostname_buf, MAXHOSTNAMELEN + 1);
+
+        if(check_length > MAXHOSTNAMELEN) {
+
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ENAMETOOLONG", "Static hostname string exceeded maximum length.");
+            g_free(valid_static_hostname_buf);
+
+        } else if(!(STATIC_HOSTNAME = valid_static_hostname_buf)) {
+
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set static hostname for unknown reason.");
+            g_free(valid_static_hostname_buf);
+
+        } else { 
+
+            g_strdelimit(STATIC_HOSTNAME, " ", '-');
+            hostname1_set_static_hostname(hn1_passed_interf, STATIC_HOSTNAME); 
+            g_ptr_array_add(hostnamed_freeable, valid_static_hostname_buf);
+            ret = (!sethostname(valid_static_hostname_buf, MAXHOSTNAMELEN)) ? TRUE : FALSE; /* TODO set /etc/myname, guarantee domain or substitue .home.network" */
+            hostname1_complete_set_static_hostname(hn1_passed_interf, invoc);
+        }
+    }
+
+    return ret;
 }
 
 static gboolean
@@ -161,7 +271,97 @@ on_handle_set_pretty_hostname(Hostname1 *hn1_passed_interf,
                               GDBusMethodInvocation *invoc,
                               const gchar *greet,
                               gpointer data) {
-    return FALSE;
+
+    GVariant *params;
+    gchar *proposed_pretty_hostname, *valid_pretty_hostname_buf, *computed_static_hostname;
+    const gchar *bus_name;
+    gboolean policykit_auth, ret, try_to_set;
+    size_t check_length;
+    check_auth_result is_authed;
+    GKeyFile *config;
+
+    config = g_key_file_new();
+    proposed_pretty_hostname = NULL;
+    ret = try_to_set = FALSE;
+    
+    params = g_dbus_method_invocation_get_parameters(invoc);
+    g_variant_get(params, "(sb)", &proposed_pretty_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.set-pretty-hostname", 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 pretty 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 pretty hostname for unknown reason.");
+            break;
+    }
+
+    /* verify passed hostname's validity */
+    if(try_to_set && proposed_pretty_hostname && (valid_pretty_hostname_buf = g_locale_to_utf8(proposed_pretty_hostname, -1, 0, 0, NULL))) {
+
+        check_length = strnlen(valid_pretty_hostname_buf, MAXHOSTNAMELEN + 1);
+
+        if(check_length > MAXHOSTNAMELEN) {
+
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ENAMETOOLONG", "Static hostname string exceeded maximum length.");
+            g_free(valid_pretty_hostname_buf);
+
+        } else if(!(PRETTY_HOSTNAME = valid_pretty_hostname_buf)) {
+
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set pretty hostname for unknown reason.");
+            g_free(valid_pretty_hostname_buf);
+
+        } else {
+
+            hostname1_set_pretty_hostname(hn1_passed_interf, PRETTY_HOSTNAME);
+            g_ptr_array_add(hostnamed_freeable, valid_pretty_hostname_buf);
+            hostname1_complete_set_pretty_hostname(hn1_passed_interf, invoc);
+            ret = TRUE;
+
+            if(g_key_file_load_from_file(config, "/etc/machine-info", G_KEY_FILE_NONE, NULL)) {
+                g_key_file_set_string(config, "hostnamed", "PRETTY_HOSTNAME", valid_pretty_hostname_buf);
+
+                if((computed_static_hostname = g_hostname_to_ascii(PRETTY_HOSTNAME))) {
+
+                    g_strdelimit(computed_static_hostname, " ", '-');
+                    hostname1_set_static_hostname(hn1_passed_interf, computed_static_hostname);
+                    STATIC_HOSTNAME = computed_static_hostname;
+                    g_ptr_array_add(hostnamed_freeable, computed_static_hostname);
+                    g_key_file_set_string(config, "hostnamed", "StaticHostname", computed_static_hostname);
+
+                } else
+                    g_free(computed_static_hostname);
+            }
+
+        }
+    }
+
+    g_key_file_save_to_file(config, "/etc/machine-info", NULL);
+    g_key_file_unref(config);
+
+    return ret;
 }
 
 static gboolean
@@ -169,7 +369,86 @@ on_handle_set_chassis(Hostname1 *hn1_passed_interf,
                       GDBusMethodInvocation *invoc,
                       const gchar *greet,
                       gpointer data) {
-    return FALSE;
+
+    GVariant *params;
+    gchar *proposed_chassis_name, *valid_chassis_name_buf;
+    const gchar *bus_name;
+    gboolean policykit_auth, ret, try_to_set;
+    check_auth_result is_authed;
+    GKeyFile *config;
+
+    config = g_key_file_new();
+    proposed_chassis_name = NULL;
+    ret = try_to_set = FALSE;
+    valid_chassis_name_buf = (gchar *)g_malloc0(8192);
+    
+    params = g_dbus_method_invocation_get_parameters(invoc);
+    g_variant_get(params, "(sb)", &proposed_chassis_name, &policykit_auth);
+    bus_name = g_dbus_method_invocation_get_sender(invoc);
+
+    g_strlcpy(valid_chassis_name_buf, proposed_chassis_name, (gsize)64);
+
+    /* verify caller has correct permissions via polkit */
+    is_authed = polkit_try_auth(bus_name, "org.freedesktop.hostname1.set-chassis", 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 chassis type.");
+            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 chassis type for unknown reason.");
+            break;
+    }
+
+    /* verify passed chassis type's validity */
+    if(try_to_set && proposed_chassis_name) {
+
+        if(!is_valid_chassis_type(proposed_chassis_name)) {
+
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Chassis type must be 'desktop', 'laptop', 'server', 'tablet', 'handset', 'vm', or 'container'.");
+            g_free(valid_chassis_name_buf);
+
+        } else if(!(CHASSIS = valid_chassis_name_buf)) {
+
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set chassis type for unknown reason.");
+            g_free(valid_chassis_name_buf);
+
+        } else {
+
+            hostname1_set_chassis(hn1_passed_interf, CHASSIS);
+            g_ptr_array_add(hostnamed_freeable, valid_chassis_name_buf);
+            hostname1_complete_set_chassis(hn1_passed_interf, invoc);
+
+            if(g_key_file_load_from_file(config, "/etc/machine-info", G_KEY_FILE_NONE, NULL)) {
+
+                ret = TRUE;
+                g_key_file_set_string(config, "hostnamed", "ChassisType", valid_chassis_name_buf);
+
+            }
+        }
+    }
+
+    g_key_file_save_to_file(config, "/etc/machine-info", NULL);
+    g_key_file_unref(config);
+
+    return ret;
 }
 
 static gboolean
@@ -177,7 +456,80 @@ on_handle_set_icon_name(Hostname1 *hn1_passed_interf,
                         GDBusMethodInvocation *invoc,
                         const gchar *greet,
                         gpointer data) {
-    return FALSE;
+
+    GVariant *params;
+    gchar *proposed_icon_name, *valid_icon_name_buf;
+    const gchar *bus_name;
+    gboolean policykit_auth, ret, try_to_set;
+    check_auth_result is_authed;
+    GKeyFile *config;
+
+    config = g_key_file_new();
+    proposed_icon_name = NULL;
+    ret = try_to_set = FALSE;
+    
+    params = g_dbus_method_invocation_get_parameters(invoc);
+    g_variant_get(params, "(sb)", &proposed_icon_name, &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.set-icon-name", 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 icon name.");
+            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 icon name for unknown reason.");
+            break;
+    }
+
+    /* verify passed chassis type's validity */
+    if(try_to_set && proposed_icon_name) {
+
+        g_strlcpy(valid_icon_name_buf, proposed_icon_name, (gsize)64);
+
+        if(!(ICON = valid_icon_name_buf)) {
+
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set icon name for unknown reason.");
+            g_free(valid_icon_name_buf);
+
+        } else {
+
+            hostname1_set_icon_name(hn1_passed_interf, ICON);
+            g_ptr_array_add(hostnamed_freeable, valid_icon_name_buf);
+            hostname1_complete_set_icon_name(hn1_passed_interf, invoc);
+
+            if(g_key_file_load_from_file(config, "/etc/machine-info", G_KEY_FILE_NONE, NULL)) {
+
+                ret = TRUE;
+                g_key_file_set_string(config, "hostnamed", "IconName", valid_icon_name_buf);
+
+            }
+        }
+    }
+
+    g_key_file_save_to_file(config, "/etc/machine-info", NULL);
+    g_key_file_unref(config);
+
+    return ret;
 }
 
 /* note: all hostnamed/hostname1's properties are read-only,
@@ -189,21 +541,34 @@ on_handle_set_icon_name(Hostname1 *hn1_passed_interf,
 const gchar *
 our_get_hostname() {
 
-    if(HOSTNAME)
+    gchar *hostname_buf;
+    hostname_buf = (gchar *)g_malloc0(MAXHOSTNAMELEN);
+
+    if(gethostname(hostname_buf, MAXHOSTNAMELEN))
+        return "localhost.home.network"; /* TODO bomb out here probably */
+    
+    else if(!g_strcmp0(HOSTNAME, hostname_buf)) {
+
+        g_free(hostname_buf);
         return HOSTNAME;
+    }
 
-    return "localhost";
+    g_ptr_array_add(hostnamed_freeable, hostname_buf);
+    HOSTNAME = hostname_buf;
+    hostname1_set_hostname(hostnamed_interf, HOSTNAME);
+
+    return HOSTNAME;
 }
 
 const gchar *
 our_get_static_hostname() {
 
-    if(STATIC_HOSTNAME)
+    if(STATIC_HOSTNAME && g_strcmp0(STATIC_HOSTNAME, ""))
         return STATIC_HOSTNAME;
     else if(HOSTNAME)
         return HOSTNAME;
 
-    return "localhost";
+    return "localhost.home.network";
 }
 
 const gchar *
@@ -263,7 +628,8 @@ our_get_kernel_release() {
 const gchar *
 our_get_os_cpename() {
 
-    return "ONEDAY";
+    /* XXX needs to parse /etc/os-release (fallback to /usr/local/lib/os-release) */
+    return "";
 }
 
 const gchar *
@@ -275,8 +641,8 @@ our_get_os_pretty_name() {
 /* --- 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);
 
@@ -384,7 +750,7 @@ int main() {
     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())
@@ -442,8 +808,8 @@ gboolean set_names() {
     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)))
+    if(g_key_file_load_from_file(config, "/etc/machine-info", G_KEY_FILE_NONE, NULL)
+        && (pretty_hostname_buf = g_key_file_get_value(config, "hostnamed", "PRETTY_HOSTNAME", NULL)))
         PRETTY_HOSTNAME = pretty_hostname_buf;
     else
         PRETTY_HOSTNAME = "";
@@ -644,3 +1010,18 @@ gboolean up_native_get_sensordev(const char * id, struct sensordev * snsrdev) {
 
     return FALSE;
 }
+
+static gboolean is_valid_chassis_type(gchar *test) {
+
+    if(!g_strcmp0(test, "desktop") ||
+       !g_strcmp0(test, "laptop") ||
+       !g_strcmp0(test, "server") ||
+       !g_strcmp0(test, "tablet") ||
+       !g_strcmp0(test, "handset") ||
+       !g_strcmp0(test, "vm") ||
+       !g_strcmp0(test, "container") ||
+       !g_strcmp0(test, ""))
+        return TRUE;
+
+    return FALSE;
+}