1 files changed, 38 insertions, 0 deletions
diff --git a/src/util.c b/src/util.c
new file mode 100644
index 0000000..9e7c892
--- /dev/null
+++ b/src/util.c
@@ -0,0 +1,38 @@
+#include "util.h"
+#include <sys/types.h>
+#include <unistd.h>
+#include <string.h>
+#include <pwd.h>
+#include <stdio.h>
+
+char *util_userHome(int uid, char *buffer, size_t len)
+{
+	struct passwd pwd;
+	struct passwd *res;
+	char b[1000];
+	getpwuid_r(uid, &pwd, b, sizeof b, &res);
+	if (res == NULL || res->pw_dir == NULL)
+		return NULL;
+	int printret = snprintf(buffer, len, "%s", res->pw_dir);
+	if (printret < 0 || printret >= (int)len)
+		return NULL;
+	buffer[len-1] = '\0';
+	return buffer;
+}
+
+char *util_sockPath(int uid, int pid, char *buffer, size_t len)
+{
+	char home[120];
+	if (uid == -1) {
+		uid = (int)getuid();
+	}
+	if (pid == -1) {
+		pid = (int)getpid();
+	}
+	if (util_userHome(uid, home, sizeof home) == NULL)
+		return NULL;
+	int printret = snprintf(buffer, len, "%s/.printergui.%d", pid);
+	if (printret < 0 || printret >= (int)len)
+		return NULL;
+	return buffer;
+}