New upstream version 1.0.3

[moonshot-ui.git] / src / moonshot-crypto-utils.c

diff --git a/src/moonshot-crypto-utils.c b/src/moonshot-crypto-utils.c
new file mode 100644 (file)
index 0000000..a14c610
--- /dev/null
+++ b/src/moonshot-crypto-utils.c
@@ -0,0 +1,29 @@
+#include <string.h>
+#include <openssl/bio.h>
+#include <openssl/pem.h>
+
+#include <stdio.h>
+
+char* get_cert_valid_before(const unsigned char* buf, int len, char* datebuf, int datebuf_len)
+{
+    datebuf[0]='\0';
+
+    unsigned char *p = (unsigned char*) buf;
+    X509* x = d2i_X509(NULL, &p, len);
+    if (x == NULL) {
+        return "Error calling d2i_X509()!";
+    }
+
+    BIO* out_bio = BIO_new(BIO_s_mem());
+    ASN1_TIME* time = X509_get_notAfter(x);
+
+    if (ASN1_TIME_print(out_bio, time)) {
+        int write = BIO_read(out_bio, datebuf, datebuf_len - 1);
+        datebuf[write]='\0';
+    }
+
+    datebuf[datebuf_len - 1] = '\0';
+    BIO_free(out_bio);
+    X509_free(x);
+    return "";
+}