Reorganize old directory hierarchy to match current usage

svn path=/docs; revision=1875

1 files changed, 181 insertions, 0 deletions

diff --git a/utils/uri/uri.c b/utils/uri/uri.c
new file mode 100644
index 00000000..2420d49f
--- /dev/null
+++ b/utils/uri/uri.c
@@ -0,0 +1,181 @@
+/* $Id$ */
+
+/*
+ * Extract and test URIs from certificates.  This is a unit test of
+ * rcynic code, a utility, or both, depending on how it turns out.
+ *
+ * NB: OpenSSL insures that IA5 strings are null-terminated, so it's safe
+ * for us to ignore the length count.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <openssl/bio.h>
+#include <openssl/pem.h>
+#include <openssl/err.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+#include <openssl/safestack.h>
+
+static X509 *read_cert(const char *filename, int format, int verbose)
+{
+  X509 *x = NULL;
+  BIO *b;
+
+  if ((b = BIO_new_file(filename, "r")) != NULL) {
+    switch (format) {
+    case 'p':
+      x = PEM_read_bio_X509_AUX(b, NULL, NULL, NULL);
+      break;
+    case 'd':
+      x = d2i_X509_bio(b, NULL);
+      break;
+    }
+    if (verbose && x != NULL) {
+      X509_print_fp(stdout, x);
+      printf("\n");
+    }
+  }
+  BIO_free(b);
+  return x;
+}
+
+enum decode_errors {
+  decode_ok,
+  decode_no_extension,
+  decode_not_exactly_one_DistributionPointName,
+  decode_has_reasons,
+  decode_has_CRLissuer,
+  decode_no_distributionPoint,
+  decode_not_GeneralName,
+  decode_not_URI,
+};
+
+static enum decode_errors decode_crldp(X509 *x, int verbose)
+{
+  enum decode_errors err = decode_ok;
+  STACK_OF(DIST_POINT) *ds = X509_get_ext_d2i(x, NID_crl_distribution_points, NULL, NULL);
+  DIST_POINT *d;
+  GENERAL_NAME *n;
+  int i;
+
+  if (!ds) {
+    err = decode_no_extension;
+  } else if (sk_DIST_POINT_num(ds) != 1) {
+    err = decode_not_exactly_one_DistributionPointName;
+  } else if ((d = sk_DIST_POINT_value(ds, 0))->reasons) {
+    err = decode_has_reasons;
+  } else if (d->CRLissuer) {
+    err = decode_has_CRLissuer;
+  } else if (!d->distpoint) {
+    err = decode_no_distributionPoint;
+  } else if (d->distpoint->type != 0) {
+    err = decode_not_GeneralName;
+  } else {
+    for (i = 0; i < sk_GENERAL_NAME_num(d->distpoint->name.fullname); i++) {
+      n = sk_GENERAL_NAME_value(d->distpoint->name.fullname, i);
+      if (n->type != GEN_URI) {
+	err = decode_not_GeneralName;
+	break;
+      }
+      if (!strncmp(n->d.uniformResourceIdentifier->data,
+		   "rsync://", sizeof("rsync://") - 1)) {
+	printf(" CRL: %s\n", n->d.uniformResourceIdentifier->data);
+	break;
+      }
+    }
+  }
+
+  sk_DIST_POINT_pop_free(ds, DIST_POINT_free);
+  return err;
+}
+
+static enum decode_errors decode_access(X509 *x, int verbose, char *tag,
+					int nid, unsigned char *oid,
+					int oidlen)
+{
+  enum decode_errors err = decode_ok;
+  AUTHORITY_INFO_ACCESS *as = X509_get_ext_d2i(x, nid, NULL, NULL);
+  ACCESS_DESCRIPTION *a;
+  int i;
+
+  if (!as) {
+    err = decode_no_extension;
+  } else {
+    for (i = 0; i < sk_ACCESS_DESCRIPTION_num(as); i++) {
+      a = sk_ACCESS_DESCRIPTION_value(as, i);
+      if (a->location->type != GEN_URI) {
+	err = decode_not_URI;
+	break;
+      }
+      if (a->method->length == oidlen &&
+	  !memcmp(a->method->data, oid, oidlen) &&
+	  !strncmp(a->location->d.uniformResourceIdentifier->data,
+		   "rsync://", sizeof("rsync://") - 1)) {
+	printf(" %s: %s\n", tag, a->location->d.uniformResourceIdentifier->data);
+	break;
+      }
+    }
+  }
+
+  sk_ACCESS_DESCRIPTION_pop_free(as, ACCESS_DESCRIPTION_free);
+  return err;
+}
+
+static void decode_aia(X509 *x, int verbose)
+{
+  static unsigned char oid[] = {0x2b, 0x6, 0x1, 0x5, 0x5, 0x7, 0x30, 0x2};
+  decode_access(x, verbose, "AIA", NID_info_access, oid, sizeof(oid));
+}
+
+static void decode_sia(X509 *x, int verbose)
+{
+  static unsigned char oid[] = {0x2b, 0x6, 0x1, 0x5, 0x5, 0x7, 0x30, 0x5};
+  decode_access(x, verbose, "SIA", NID_sinfo_access, oid, sizeof(oid));
+}
+
+int main(int argc, char *argv[])
+{
+  int c, format = 'p', ret = 0, verbose = 0;
+  X509 *x;
+
+  OpenSSL_add_all_algorithms();
+  ERR_load_crypto_strings();
+
+  while ((c = getopt(argc, argv, "pdv")) > 0) {
+    switch (c) {
+    case 'v':
+      verbose = 1;
+      break;
+    case 'p':
+    case 'd':
+      format = c;
+      break;
+    default:
+      fprintf(stderr, "usage: %s [-p | -d] cert [cert...]\n", argv[0]);
+      ret = 1;
+    }
+  }
+
+  if (ret == 0) {
+    argc -= optind;
+    argv += optind;
+
+    while (argc-- > 0) {
+      printf("File %s\n", *argv);
+      if ((x = read_cert(*argv++, format, verbose)) == NULL) {
+	printf("Couldn't read certificate, skipping\n");
+	continue;
+      }
+      decode_aia(x, verbose);
+      decode_sia(x, verbose);
+      decode_crldp(x, verbose);
+      X509_free(x);
+    }
+  }
+
+  EVP_cleanup();
+  ERR_free_strings();
+  return ret;
+}