Start Computer/Security

As requested in https://github.com/lpereira/hardinfo/issues/342

Signed-off-by: Burt P <pburt0@gmail.com>

3 files changed, 49 insertions, 5 deletions

diff --git a/includes/computer.h b/includes/computer.h
index 2e381285..892a3d69 100644
--- a/includes/computer.h
+++ b/includes/computer.h
@@ -144,6 +144,7 @@ gchar *computer_get_formatted_uptime();
 gchar *computer_get_alsacards(Computer * computer);
 gchar *computer_get_entropy_avail(void);
 gchar *computer_get_aslr(void);
+gchar *computer_get_dmesg_status(void);
 
 OperatingSystem *computer_get_os(void);
 AlsaInfo *computer_get_alsainfo(void);
diff --git a/modules/computer.c b/modules/computer.c
index e3976e81..7bb470a3 100644
--- a/modules/computer.c
+++ b/modules/computer.c
@@ -43,6 +43,7 @@
 /* Callbacks */
 gchar *callback_summary(void);
 gchar *callback_os(void);
+gchar *callback_security(void);
 gchar *callback_modules(void);
 gchar *callback_boots(void);
 gchar *callback_locales(void);
@@ -59,6 +60,7 @@ gchar *callback_dev(void);
 /* Scan callbacks */
 void scan_summary(gboolean reload);
 void scan_os(gboolean reload);
+void scan_security(gboolean reload);
 void scan_modules(gboolean reload);
 void scan_boots(gboolean reload);
 void scan_locales(gboolean reload);
@@ -75,6 +77,7 @@ void scan_dev(gboolean reload);
 static ModuleEntry entries[] = {
     {N_("Summary"), "summary.png", callback_summary, scan_summary, MODULE_FLAG_NONE},
     {N_("Operating System"), "os.png", callback_os, scan_os, MODULE_FLAG_NONE},
+    {N_("Security"), "os.png", callback_security, scan_security, MODULE_FLAG_NONE},
     {N_("Kernel Modules"), "module.png", callback_modules, scan_modules, MODULE_FLAG_NONE},
     {N_("Boots"), "boot.png", callback_boots, scan_boots, MODULE_FLAG_NONE},
     {N_("Languages"), "language.png", callback_locales, scan_locales, MODULE_FLAG_NONE},
@@ -143,6 +146,13 @@ void scan_os(gboolean reload)
     SCAN_END();
 }
 
+void scan_security(gboolean reload)
+{
+    SCAN_START();
+    //nothing to do here yet
+    SCAN_END();
+}
+
 void scan_modules(gboolean reload)
 {
     SCAN_START();
@@ -512,11 +522,6 @@ gchar *callback_os(void)
         info_field(_("Desktop Environment"), computer->os->desktop),
         info_field_last());
 
-    info_add_group(info, _("Security"),
-        info_field_update(_("Available entropy in /dev/random"), 1000),
-        info_field(_("ASLR"), idle_free(computer_get_aslr())),
-        info_field_last());
-
     info_add_group(info, _("Misc"),
         info_field_update(_("Uptime"), 1000),
         info_field_update(_("Load Average"), 10000),
@@ -525,6 +530,20 @@ gchar *callback_os(void)
     return info_flatten(info);
 }
 
+gchar *callback_security(void)
+{
+    struct Info *info = info_new();
+
+    info_add_group(info, _("Security"),
+        info_field(_("HardInfo running as"), (getuid() == 0) ? _("Superuser") : _("User")),
+        info_field_update(_("Available entropy in /dev/random"), 1000),
+        info_field(_("ASLR"), idle_free(computer_get_aslr())),
+        info_field(_("dmesg"), idle_free(computer_get_dmesg_status())),
+        info_field_last());
+
+    return info_flatten(info);
+}
+
 gchar *callback_modules(void)
 {
     struct Info *info = info_new();
diff --git a/modules/computer/os.c b/modules/computer/os.c
index 7a8348f2..49210307 100644
--- a/modules/computer/os.c
+++ b/modules/computer/os.c
@@ -263,6 +263,29 @@ detect_desktop_environment(void)
 }
 
 gchar *
+computer_get_dmesg_status(void)
+{
+    gchar *out = NULL, *err = NULL;
+    int ex = 1, result = 0;
+    g_spawn_command_line_sync("dmesg", &out, &err, &ex, NULL);
+    g_free(out);
+    g_free(err);
+    result += (getuid() == 0) ? 2 : 0;
+    result += ex ? 1 : 0;
+    switch(result) {
+        case 0: /* readable, user */
+            return g_strdup(_("User access allowed"));
+        case 1: /* unreadable, user */
+            return g_strdup(_("User access forbidden"));
+        case 2: /* readable, root */
+            return g_strdup(_("Access allowed (running as superuser)"));
+        case 3: /* unreadable, root */
+            return g_strdup(_("Access forbidden? (running as superuser)"));
+    }
+    return g_strdup(_("(Unknown)"));
+}
+
+gchar *
 computer_get_aslr(void)
 {
     switch (h_sysfs_read_int("/proc/sys/kernel", "randomize_va_space")) {
@@ -276,6 +299,7 @@ computer_get_aslr(void)
         return g_strdup(_("Unknown"));
     }
 }
+
 gchar *
 computer_get_entropy_avail(void)
 {