make *name prop. getters operate similarly to others
[systembsd.git] / src / interfaces / hostnamed / hostnamed.c
1 /*
2 * Copyright (c) 2014 Ian Sutton <ian@kremlin.cc>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <unistd.h>
18 #include <limits.h>
19 #include <signal.h>
20 #include <string.h>
21
22 #include <sys/param.h>
23 #include <sys/sysctl.h>
24 #include <sys/sensors.h>
25 #include <sys/ioctl.h>
26 #include <sys/utsname.h>
27
28 #include <machine/apmvar.h>
29
30 #include <glib/gprintf.h>
31 #include <glib-unix.h>
32 /* #include <gtk/gtk.h> */
33
34 #include "hostnamed-gen.h"
35 #include "hostnamed.h"
36
37 /* format: {
38 * (1) string to be matched against runtime machine's sysctl output.
39 * can be either the exact string or a substring contained
40 * within sysctl strings. no "guesses" here, a match should
41 * reliably indicate the chassis/icon.
42 *
43 * (2) string describing chassis type divulged by (1).
44 * must be one of "desktop", "laptop", "server",
45 * "tablet", "handset", "vm", "container" or NULL
46 * if only icon string can be ascertained. "vm" refers
47 * to operating systems running on baremetal hypervisors
48 * (hardware virtualization, like XEN) while "container"
49 * refers to OSs running on shared hypervisors like
50 * virtualbox or VMware. consider the distinction carefully
51 * as common virtualization software like KVM may share
52 * characteristics of both "vm" and "container" types.
53 *
54 * (3) string specifying icon to use. follows XDG icon spec.
55 * see http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html
56 * for allowed strings.
57 *
58 * (4) chassis precedence bit. TRUE if (2) is defined and
59 * we're certain it is the proper string. FALSE in the
60 * circumstance (2) may be the correct string, unless
61 * a match with this bit set to TRUE overrides it.
62 * if (2) is NULL, this bit is inconsequential.
63 *
64 * (5) icon precedence bit. see previous definition.
65 * } */
66 struct SYSCTL_LOOKUP_TABLE {
67 gchar *match_string;
68 gchar *chassis;
69 gchar *icon;
70 gboolean chassis_precedence;
71 gboolean icon_precedence;
72 };
73
74 GPtrArray *hostnamed_freeable;
75 Hostname1 *hostnamed_interf;
76
77 GMainLoop *hostnamed_loop;
78
79 guint bus_descriptor;
80 gboolean dbus_interface_exported; /* reliable because of gdbus operational guarantees */
81
82 gchar *HOSTNAME, *STATIC_HOSTNAME, *PRETTY_HOSTNAME;
83 gchar *CHASSIS, *ICON;
84 gchar *KERN_NAME, *KERN_RELEASE, *KERN_VERS, *OS_CPENAME;
85
86 /* TODO no specific vm or laptop icon in gnome
87 * NOTE paravirtualization on xen is only available for linuxes right now
88 * dmesg on linux systems reveals xen and virtualization method (HVM or PVM)
89 * but we will worry about those later */
90
91 /* add any sysctl strings that suggest virtualization here */
92 const struct SYSCTL_LOOKUP_TABLE chassis_indicator_table[] =
93 {
94 { "QEMU Virtual CPU", "vm", NULL, FALSE, FALSE }, /* could be QEMU running in userspace or as part of KVM */
95 { "KVM", "vm", "drive-multidisk", FALSE, FALSE },
96 { "SmartDC HVM", "vm", "drive-multidisk", TRUE, TRUE }, /* illumos-joyent kvm */
97 { "VirtualBox", "vm", "drive-multidisk", TRUE, TRUE },
98 { "VMware, Inc.", "vm", "drive-multidisk", TRUE, TRUE },
99 { "VMware Virtual Platform", "vm", "drive-multidisk", TRUE, TRUE },
100 { "Parallels", "vm", "drive-multidisk", TRUE, TRUE }, /* need verification */
101 { "Xen", "vm", "drive-multidisk", FALSE, FALSE }
102 }; /* TODO: chroots, etc. are the actual "containers", add them */
103
104 /* archs to check against when determining if machine is server */
105 const gchar *server_archs[] = {
106 "hppa",
107 "sparc",
108 "sparc64"
109 };
110
111 /* --- begin method/property/dbus signal code --- */
112
113 /* TODO the extra boolean passed to these funcs is for policykit auth */
114 /* TODO complete call with error, message, etc */
115 static gboolean
116 on_handle_set_hostname(Hostname1 *hn1_passed_interf,
117 GDBusMethodInvocation *invoc,
118 const gchar *greet,
119 gpointer data) {
120 GVariant *params;
121 gchar *proposed_hostname, *valid_hostname_buf;
122 gboolean policykit_auth, ret;
123 size_t check_length, bad_length;
124
125 bad_length = MAXHOSTNAMELEN + 1;
126 proposed_hostname = NULL;
127 ret = FALSE;
128
129 params = g_dbus_method_invocation_get_parameters(invoc);
130 g_variant_get(params, "(sb)", &proposed_hostname, &policykit_auth);
131
132 if(proposed_hostname && (valid_hostname_buf = g_hostname_to_ascii(proposed_hostname))) {
133
134 check_length = strnlen(proposed_hostname, bad_length);
135
136 if(check_length < bad_length && !sethostname(proposed_hostname, check_length))
137 ret = TRUE;
138 }
139
140 hostname1_complete_set_hostname(hn1_passed_interf, invoc);
141
142 if(proposed_hostname)
143 g_free(proposed_hostname);
144 if(valid_hostname_buf)
145 g_free(valid_hostname_buf);
146
147 return ret;
148 }
149
150 static gboolean
151 on_handle_set_static_hostname(Hostname1 *hn1_passed_interf,
152 GDBusMethodInvocation *invoc,
153 const gchar *greet,
154 gpointer data) {
155 return FALSE;
156 }
157
158 static gboolean
159 on_handle_set_pretty_hostname(Hostname1 *hn1_passed_interf,
160 GDBusMethodInvocation *invoc,
161 const gchar *greet,
162 gpointer data) {
163 return FALSE;
164 }
165
166 static gboolean
167 on_handle_set_chassis(Hostname1 *hn1_passed_interf,
168 GDBusMethodInvocation *invoc,
169 const gchar *greet,
170 gpointer data) {
171 return FALSE;
172 }
173
174 static gboolean
175 on_handle_set_icon_name(Hostname1 *hn1_passed_interf,
176 GDBusMethodInvocation *invoc,
177 const gchar *greet,
178 gpointer data) {
179 return FALSE;
180 }