ui: add URL for static configurations to load a specified file
[petitboot] / discover / platform.c
1
2 #define _GNU_SOURCE
3
4 #include <fcntl.h>
5 #include <string.h>
6 #include <locale.h>
7
8 #include <log/log.h>
9 #include <file/file.h>
10 #include <types/types.h>
11 #include <talloc/talloc.h>
12
13 #include "platform.h"
14
15 void                    *platform_ctx;
16 static struct platform  *platform;
17 static struct config    *config;
18
19 static const char *kernel_cmdline_debug = "petitboot.debug";
20
21 static void dump_config(struct config *config)
22 {
23         unsigned int i;
24
25         pb_log("configuration:\n");
26
27         if (config->autoboot_enabled)
28                 pb_log(" autoboot: enabled, %d sec\n",
29                                 config->autoboot_timeout_sec);
30         else
31                 pb_log(" autoboot: disabled\n");
32
33         if (config->network.n_interfaces || config->network.n_dns_servers)
34                 pb_log(" network configuration:\n");
35
36         if (config->safe_mode)
37                 pb_log(" safe mode: active\n");
38
39         if (config->disable_snapshots)
40                 pb_log(" dm-snapshots disabled\n");
41
42         for (i = 0; i < config->network.n_interfaces; i++) {
43                 struct interface_config *ifconf =
44                         config->network.interfaces[i];
45
46                 pb_log("  interface %02x:%02x:%02x:%02x:%02x:%02x\n",
47                                 ifconf->hwaddr[0], ifconf->hwaddr[1],
48                                 ifconf->hwaddr[2], ifconf->hwaddr[3],
49                                 ifconf->hwaddr[4], ifconf->hwaddr[5]);
50
51                 if (ifconf->ignore) {
52                         pb_log("   ignore\n");
53                         continue;
54                 }
55
56                 if (ifconf->method == CONFIG_METHOD_DHCP) {
57                         pb_log("   dhcp\n");
58
59                 } else if (ifconf->method == CONFIG_METHOD_STATIC) {
60                         pb_log("   static:\n");
61                         pb_log("    ip:  %s\n", ifconf->static_config.address);
62                         pb_log("    gw:  %s\n", ifconf->static_config.gateway);
63                         pb_log("    url:  %s\n", ifconf->static_config.url);
64
65                 }
66         }
67         for (i = 0; i < config->network.n_dns_servers; i++)
68                 pb_log("  dns server %s\n", config->network.dns_servers[i]);
69
70         for (i = 0; i < config->n_autoboot_opts; i++) {
71                 if (config->autoboot_opts[i].boot_type == BOOT_DEVICE_TYPE)
72                         pb_log("  boot device %d: %s\n", i,
73                                device_type_name(config->autoboot_opts[i].type));
74                 else
75                         pb_log("  boot device %d: uuid: %s\n",
76                                i, config->autoboot_opts[i].uuid);
77         }
78
79         pb_log("  IPMI boot device 0x%02x%s\n", config->ipmi_bootdev,
80                         config->ipmi_bootdev_persistent ? " (persistent)" : "");
81
82
83         pb_log(" language: %s\n", config->lang ?: "");
84 }
85
86 static bool config_debug_on_cmdline(void)
87 {
88         char buf[600];
89         int rc, fd;
90
91         fd = open("/proc/cmdline", O_RDONLY);
92         if (fd < 0)
93                 return false;
94
95         rc = read(fd, buf, sizeof(buf));
96         close(fd);
97
98         if (rc <= 0)
99                 return false;
100
101         return memmem(buf, rc, kernel_cmdline_debug,
102                         strlen(kernel_cmdline_debug)) != NULL;
103 }
104
105 void config_set_defaults(struct config *config)
106 {
107         const char *lang;
108
109         config->autoboot_enabled = true;
110         config->autoboot_timeout_sec = 10;
111         config->autoboot_enabled = true;
112         config->network.interfaces = NULL;
113         config->network.n_interfaces = 0;
114         config->network.dns_servers = NULL;
115         config->network.n_dns_servers = 0;
116         config->safe_mode = false;
117         config->allow_writes = true;
118         config->disable_snapshots = false;
119
120         config->n_autoboot_opts = 2;
121         config->autoboot_opts = talloc_array(config, struct autoboot_option,
122                                                 config->n_autoboot_opts);
123         config->autoboot_opts[0].boot_type = BOOT_DEVICE_TYPE;
124         config->autoboot_opts[0].type = DEVICE_TYPE_NETWORK;
125         config->autoboot_opts[1].boot_type = BOOT_DEVICE_TYPE;
126         config->autoboot_opts[1].type = DEVICE_TYPE_ANY;
127
128         config->ipmi_bootdev = 0;
129         config->ipmi_bootdev_persistent = false;
130
131         config->debug = config_debug_on_cmdline();
132
133         lang = setlocale(LC_ALL, NULL);
134         pb_log("lang: %s\n", lang);
135         if (lang && strlen(lang))
136                 config->lang = talloc_strdup(config, lang);
137         else
138                 config->lang = NULL;
139
140 }
141
142 int platform_init(void *ctx)
143 {
144         extern struct platform *__start_platforms,  *__stop_platforms;
145         struct platform **p;
146
147         platform_ctx = talloc_new(ctx);
148
149         for (p = &__start_platforms; p < &__stop_platforms; p++) {
150                 if (!(*p)->probe(*p, platform_ctx))
151                         continue;
152                 platform = *p;
153                 break;
154         }
155
156         config = talloc(platform_ctx, struct config);
157         config_set_defaults(config);
158
159         if (platform) {
160                 pb_log("Detected platform type: %s\n", platform->name);
161                 if (platform->load_config)
162                         platform->load_config(platform, config);
163         } else {
164                 pb_log("No platform type detected, some platform-specific "
165                                 "functionality will be disabled\n");
166         }
167
168         dump_config(config);
169
170         return 0;
171 }
172
173 const struct platform *platform_get(void)
174 {
175         return platform;
176 }
177
178 void platform_pre_boot(void)
179 {
180         const struct config *config = config_get();
181
182         if (platform && config && platform->pre_boot)
183                 platform->pre_boot(platform, config);
184 }
185
186 int platform_get_sysinfo(struct system_info *info)
187 {
188         if (platform && platform->get_sysinfo)
189                 return platform->get_sysinfo(platform, info);
190         return -1;
191 }
192
193 int config_set(struct config *newconfig)
194 {
195         int rc;
196
197         if (!platform || !platform->save_config)
198                 return -1;
199
200         if (newconfig == config)
201                 return 0;
202
203         pb_log("new configuration data received\n");
204         dump_config(newconfig);
205
206         rc = platform->save_config(platform, newconfig);
207
208         if (!rc)
209                 config = talloc_steal(platform_ctx, newconfig);
210         else
211                 pb_log("error saving new configuration; changes lost\n");
212
213         return rc;
214 }
215
216 /* A non-exported function to allow the test infrastructure to initialise
217  * (and change) the configuration variables */
218 struct parser_test;
219 struct config __attribute__((unused)) *test_config_init(
220                 struct parser_test *test);
221 struct config *test_config_init(struct parser_test *test)
222 {
223         config = talloc(test, struct config);
224         config_set_defaults(config);
225         return config;
226 }
227
228 const struct config *config_get(void)
229 {
230         return config;
231 }
232
233 void config_set_autoboot(bool autoboot_enabled)
234 {
235         config->autoboot_enabled = autoboot_enabled;
236
237         pb_log("set autoboot: %s\n",
238                         config->autoboot_enabled ? "enabled" : "disabled");
239 }
240
241 int platform_fini(void)
242 {
243         talloc_free(platform_ctx);
244         return 0;
245 }