Get OS name from /etc/os-release

1 files changed, 46 insertions, 0 deletions

diff --git a/src/util.c b/src/util.c
index b2549af..1f6fd41 100644
--- a/src/util.c
+++ b/src/util.c
@@ -1,4 +1,7 @@
 #include "util.h"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
 #include <glib.h>
 
 gpointer
@@ -16,3 +19,46 @@ cmumble_find_by_id(GList *list, gsize member_offset, guint id)
 
 	return el;
 }
+
+gchar *
+cmumble_get_os_name(void)
+{
+	FILE *f;
+	char *line = NULL;
+	char *os = NULL, *value, *end;
+	size_t key_len = strlen("PRETTY_NAME=");
+	size_t n;
+
+	f = fopen("/etc/os-release", "r");
+	if (f == NULL)
+		return NULL;
+
+	while (getline(&line, &n, f) != -1) {
+		if (strncmp("PRETTY_NAME=", line, key_len) == 0 && (n - key_len) > 1) {
+			value = &line[key_len];
+			if (strlen(value) == 0)
+				continue;
+
+			end = &value[strlen(value) - 1];
+			if (*end == '\n')
+				*end-- = '\0';
+
+			if (strlen(value) < 2)
+				continue;
+
+			if (value[0] == '"')
+				value++;
+
+			if (*end == '"')
+				*end = '\0';
+
+			os = strdup(value);
+			goto out;
+		}
+	}
+
+out:
+	free(line);
+	fclose(f);
+	return os;
+}