added first test openssl_get_subj_alt_dns

4 files changed, 87 insertions, 0 deletions

diff --git a/meson.build b/meson.build
index 2286717..8e5b7de 100644
--- a/meson.build
+++ b/meson.build
@@ -32,3 +32,4 @@ endif
 
 subdir('src')
 subdir('man')
+subdir('tests')
diff --git a/tests/meson.build b/tests/meson.build
new file mode 100644
index 0000000..20629a4
--- /dev/null
+++ b/tests/meson.build
@@ -0,0 +1,5 @@
+
+t1 = executable('openssl_get_subj_alt_dns', 'openssl_get_subj_alt_dns.c',
+       dependencies : [ssl_dep, crypto_dep])
+
+test('get_subj_alt_dns', t1, workdir : meson.current_source_dir())
diff --git a/tests/openssl_get_subj_alt_dns.c b/tests/openssl_get_subj_alt_dns.c
new file mode 100644
index 0000000..29cd111
--- /dev/null
+++ b/tests/openssl_get_subj_alt_dns.c
@@ -0,0 +1,62 @@
+#include <stddef.h>
+#include <stdio.h>
+
+#include <openssl/pem.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+
+int main()
+{
+  FILE *fp = fopen("testdata/www-fehcom-net.pem", "r");
+  if (!fp) {
+    fprintf(stderr, "Unable to open certificate file\n");
+    return 1;
+  }
+
+  X509 *cert = PEM_read_X509(fp, NULL, NULL, NULL);
+  if (!cert) {
+    fprintf(stderr, "Unable to parse certificate\n");
+    return 1;
+  }
+
+  fclose(fp);
+
+  GENERAL_NAMES *san = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
+  if (!san) {
+    fprintf(stderr, "No Subject Alternative Names found\n");
+    return 1;
+  }
+
+  int num_sans = sk_GENERAL_NAME_num(san);
+  for (int i = 0; i < num_sans; i++) {
+    const GENERAL_NAME *current_name = sk_GENERAL_NAME_value(san, i);
+
+    switch (current_name->type) {
+    case GEN_DNS:
+      printf("DNS:        %s\n", ASN1_STRING_get0_data(current_name->d.dNSName));
+      break;
+    case GEN_EMAIL:
+      printf("Email:      %s\n", ASN1_STRING_get0_data(current_name->d.rfc822Name));
+      break;
+    case GEN_URI:
+      printf("URI:        %s\n", ASN1_STRING_get0_data(current_name->d.uniformResourceIdentifier));
+      break;
+    case GEN_IPADD:
+      int len = ASN1_STRING_length(current_name->d.iPAddress);
+      if (len != 4) {
+        fprintf(stderr, "Length mismatch in ip\n");
+        return 1;
+      }
+      const unsigned char *data = ASN1_STRING_get0_data(current_name->d.iPAddress);
+      printf("IP Address: %d.%d.%d.%d\n", data[0], data[1], data[2], data[3]);
+      break;
+    // Add more types if needed
+    }
+  }
+  GENERAL_NAMES_free(san);
+
+  X509_free(cert);
+
+  return EXIT_SUCCESS;
+}
diff --git a/tests/testdata/www-fehcom-net.pem b/tests/testdata/www-fehcom-net.pem
new file mode 100644
index 0000000..a0060ad
--- /dev/null
+++ b/tests/testdata/www-fehcom-net.pem
@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----

+MIIDIzCCAsigAwIBAgIUF8cQlMTQxzgyyuxvqPBZEpuHBOYwCgYIKoZIzj0EAwIw

+gYcxCzAJBgNVBAYTAkRFMRgwFgYDVQQIEw9SaGVpbmxhbmQtUGZhbHoxDjAMBgNV

+BAcTBUhvZWhuMQ8wDQYDVQQKEwZGZWhjb20xFzAVBgNVBAMTDnd3dy5mZWhjb20u

+bmV0MSQwIgYJKoZIhvcNAQkBFhVwb3N0bWFzdGVyQGZlaGNvbS5uZXQwHhcNMjMx

+MTExMjAxODMwWhcNMzIwMTI4MjAxODMwWjCBhzELMAkGA1UEBhMCREUxGDAWBgNV

+BAgTD1JoZWlubGFuZC1QZmFsejEOMAwGA1UEBxMFSG9laG4xDzANBgNVBAoTBkZl

+aGNvbTEXMBUGA1UEAxMOd3d3LmZlaGNvbS5uZXQxJDAiBgkqhkiG9w0BCQEWFXBv

+c3RtYXN0ZXJAZmVoY29tLm5ldDBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABD3n

+vWJfshLOKu5DwcS0FLGtj0VoDrclz9LkxL30dXh1Gu6hYLQVJwqM9SQLEdn9eIBy

+KYiAjMiE2OUwQMH/nJKjggEOMIIBCjAJBgNVHRMEAjAAMAsGA1UdDwQEAwIFoDAT

+BgNVHSUEDDAKBggrBgEFBQcDATAnBgNVHREEIDAeghZpbmRpYTE2Ny5zZXJ2ZXI0

+eW91LmRlhwRVGZWzMIGxBgNVHSMEgakwgaahgY2kgYowgYcxCzAJBgNVBAYTAkRF

+MRgwFgYDVQQIEw9SaGVpbmxhbmQtUGZhbHoxDjAMBgNVBAcTBUhvZWhuMQ8wDQYD

+VQQKEwZGZWhjb20xFzAVBgNVBAMTDnd3dy5mZWhjb20ubmV0MSQwIgYJKoZIhvcN

+AQkBFhVwb3N0bWFzdGVyQGZlaGNvbS5uZXSCFBfHEJTE0Mc4Msrsb6jwWRKbhwTm

+MAoGCCqGSM49BAMCA0kAMEYCIQDYsYNEgLsrAZy0Ut/UKHIQGkj87GtWhn7Xpytv

+3AyEwwIhAKSUy9m3027Z4YtIyLyWkY5RW24iLF2PFReA3ATxVQS3

+-----END CERTIFICATE-----