apps/verify.c: Change an old comment to clarify what the callback does

[openssl.git] / apps / verify.c

diff --git a/apps/verify.c b/apps/verify.c
index a4eb465739d6e7173656dea7cb7dd589e5cf17e5..b2e8b4def1e91ddba001302a84561943832b55b4 100644 (file)
--- a/apps/verify.c
+++ b/apps/verify.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -11,6 +11,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include "apps.h"
+#include "progs.h"
 #include <openssl/bio.h>
 #include <openssl/err.h>
 #include <openssl/x509.h>
@@ -22,13 +23,12 @@ static int check(X509_STORE *ctx, const char *file,
                  STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
                  STACK_OF(X509_CRL) *crls, int show_chain);
 static int v_verbose = 0, vflags = 0;
-static unsigned long nmflag = 0;
 
 typedef enum OPTION_choice {
     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
     OPT_ENGINE, OPT_CAPATH, OPT_CAFILE, OPT_NOCAPATH, OPT_NOCAFILE,
     OPT_UNTRUSTED, OPT_TRUSTED, OPT_CRLFILE, OPT_CRL_DOWNLOAD, OPT_SHOW_CHAIN,
-    OPT_V_ENUM, OPT_NAMEOPT, 
+    OPT_V_ENUM, OPT_NAMEOPT,
     OPT_VERBOSE
 } OPTION_CHOICE;
 
@@ -70,7 +70,6 @@ int verify_main(int argc, char **argv)
     const char *prog, *CApath = NULL, *CAfile = NULL;
     int noCApath = 0, noCAfile = 0;
     int vpmtouched = 0, crl_download = 0, show_chain = 0, i = 0, ret = 1;
-    char nmflag_set = 0;
     OPTION_CHOICE o;
 
     if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
@@ -153,8 +152,7 @@ int verify_main(int argc, char **argv)
             show_chain = 1;
             break;
         case OPT_NAMEOPT:
-            nmflag_set = 1;
-            if (!set_name_ex(&nmflag, opt_arg()))
+            if (!set_nameopt(opt_arg()))
                 goto end;
             break;
         case OPT_VERBOSE:
@@ -171,9 +169,6 @@ int verify_main(int argc, char **argv)
         goto end;
     }
 
-    if (!nmflag_set)
-        nmflag = XN_FLAG_ONELINE;
-
     if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath)) == NULL)
         goto end;
     X509_STORE_set_verify_cb(store, cb);
@@ -230,13 +225,14 @@ static int check(X509_STORE *ctx, const char *file,
 
     X509_STORE_set_flags(ctx, vflags);
     if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
+        X509_STORE_CTX_free(csc);
         printf("error %s: X.509 store context initialization failed\n",
                (file == NULL) ? "stdin" : file);
         goto end;
     }
-    if (tchain)
+    if (tchain != NULL)
         X509_STORE_CTX_set0_trusted_stack(csc, tchain);
-    if (crls)
+    if (crls != NULL)
         X509_STORE_CTX_set0_crls(csc, crls);
     i = X509_verify_cert(csc);
     if (i > 0 && X509_STORE_CTX_get_error(csc) == X509_V_OK) {
@@ -253,7 +249,7 @@ static int check(X509_STORE *ctx, const char *file,
                 printf("depth=%d: ", j);
                 X509_NAME_print_ex_fp(stdout,
                                       X509_get_subject_name(cert),
-                                      0, nmflag);
+                                      0, get_nameopt());
                 if (j < num_untrusted)
                     printf(" (untrusted)");
                 printf("\n");
@@ -279,10 +275,10 @@ static int cb(int ok, X509_STORE_CTX *ctx)
     X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
 
     if (!ok) {
-        if (current_cert) {
+        if (current_cert != NULL) {
             X509_NAME_print_ex(bio_err,
                             X509_get_subject_name(current_cert),
-                            0, nmflag);
+                            0, get_nameopt());
             BIO_printf(bio_err, "\n");
         }
         BIO_printf(bio_err, "%serror %d at %d depth lookup: %s\n",
@@ -290,15 +286,19 @@ static int cb(int ok, X509_STORE_CTX *ctx)
                cert_error,
                X509_STORE_CTX_get_error_depth(ctx),
                X509_verify_cert_error_string(cert_error));
+
+        /*
+         * Pretend that some errors are ok, so they don't stop further
+         * processing of the certificate chain.  Setting ok = 1 does this.
+         * After X509_verify_cert() is done, we verify that there were
+         * no actual errors, even if the returned value was positive.
+         */
         switch (cert_error) {
         case X509_V_ERR_NO_EXPLICIT_POLICY:
             policies_print(ctx);
+            /* fall thru */
         case X509_V_ERR_CERT_HAS_EXPIRED:
-
-            /*
-             * since we are just checking the certificates, it is ok if they
-             * are self signed. But we should still warn the user.
-             */
+            /* Continue even if the leaf is a self signed cert */
         case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
             /* Continue after extension errors too */
         case X509_V_ERR_INVALID_CA:
@@ -318,5 +318,5 @@ static int cb(int ok, X509_STORE_CTX *ctx)
         policies_print(ctx);
     if (!v_verbose)
         ERR_clear_error();
-    return (ok);
+    return ok;
 }