do not remove links found in .git directory

[openssl.git] / apps / dsa.c

diff --git a/apps/dsa.c b/apps/dsa.c
index 9d7c97f609a3a4864689557d129c3a18cb8766e6..75d6c60cedcceefe7d3fb338654f807ad95033ed 100644 (file)
--- a/apps/dsa.c
+++ b/apps/dsa.c
@@ -55,8 +55,11 @@
  * [including the GNU Public Licence.]
  */
 
-#include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */
-#ifndef OPENSSL_NO_DSA
+#include <openssl/opensslconf.h>
+#ifdef OPENSSL_NO_DSA
+NON_EMPTY_TRANSLATION_UNIT
+#else
+
 # include <stdio.h>
 # include <stdlib.h>
 # include <string.h>
@@ -80,24 +83,26 @@ typedef enum OPTION_choice {
 
 OPTIONS dsa_options[] = {
     {"help", OPT_HELP, '-', "Display this summary"},
-    {"inform", OPT_INFORM, 'F', "Input format, DER PEM PVK"},
+    {"inform", OPT_INFORM, 'f', "Input format, DER PEM PVK"},
     {"outform", OPT_OUTFORM, 'F', "Output format, DER PEM PVK"},
-# ifndef OPENSSL_NO_ENGINE
-    {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
-# endif
-    {"in", OPT_IN, '<', "Input file"},
+    {"in", OPT_IN, 's', "Input key"},
     {"out", OPT_OUT, '>', "Output file"},
-    {"pvk-strong", OPT_PVK_STRONG, '-'},
-    {"pvk-weak", OPT_PVK_WEAK, '-'},
-    {"pvk-none", OPT_PVK_NONE, '-'},
     {"noout", OPT_NOOUT, '-', "Don't print key out"},
     {"text", OPT_TEXT, '-', "Print the key in text"},
     {"modulus", OPT_MODULUS, '-', "Print the DSA public value"},
-    {"pubin", OPT_PUBIN, '-'},
-    {"pubout", OPT_PUBOUT, '-'},
+    {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
+    {"pubout", OPT_PUBOUT, '-', "Output public key, not private"},
     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
     {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
     {"", OPT_CIPHER, '-', "Any supported cipher"},
+# ifndef OPENSSL_NO_RC4
+    {"pvk-strong", OPT_PVK_STRONG, '-'},
+    {"pvk-weak", OPT_PVK_WEAK, '-'},
+    {"pvk-none", OPT_PVK_NONE, '-'},
+# endif
+# ifndef OPENSSL_NO_ENGINE
+    {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
+# endif
     {NULL}
 };
 
@@ -107,23 +112,21 @@ int dsa_main(int argc, char **argv)
     DSA *dsa = NULL;
     ENGINE *e = NULL;
     const EVP_CIPHER *enc = NULL;
-    char *engine = NULL, *infile = NULL, *outfile = NULL, *prog;
-    char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg =
-        NULL;
+    char *infile = NULL, *outfile = NULL, *prog;
+    char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
     OPTION_CHOICE o;
     int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, noout = 0;
-    int i, modulus = 0, pubin = 0, pubout = 0, pvk_encr = 2, ret = 1;
+    int i, modulus = 0, pubin = 0, pubout = 0, ret = 1;
+# ifndef OPENSSL_NO_RC4
+    int pvk_encr = 2;
+# endif
+    int private = 0;
 
     prog = opt_init(argc, argv, dsa_options);
     while ((o = opt_next()) != OPT_EOF) {
         switch (o) {
         case OPT_EOF:
         case OPT_ERR:
-#ifdef OPENSSL_NO_RC4
-        case OPT_PVK_STRONG:
-        case OPT_PVK_WEAK:
-        case OPT_PVK_NONE:
-#endif
  opthelp:
             ret = 0;
             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
@@ -133,8 +136,7 @@ int dsa_main(int argc, char **argv)
             ret = 0;
             goto end;
         case OPT_INFORM:
-            if (!opt_format
-                (opt_arg(), OPT_FMT_PEMDER | OPT_FMT_PVK, &informat))
+            if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
                 goto opthelp;
             break;
         case OPT_IN:
@@ -149,7 +151,7 @@ int dsa_main(int argc, char **argv)
             outfile = opt_arg();
             break;
         case OPT_ENGINE:
-            engine = opt_arg();
+            e = setup_engine(opt_arg(), 0);
             break;
         case OPT_PASSIN:
             passinarg = opt_arg();
@@ -167,6 +169,11 @@ int dsa_main(int argc, char **argv)
         case OPT_PVK_NONE:
             pvk_encr = 0;
             break;
+#else
+        case OPT_PVK_STRONG:
+        case OPT_PVK_WEAK:
+        case OPT_PVK_NONE:
+            break;
 #endif
         case OPT_NOOUT:
             noout = 1;
@@ -190,11 +197,12 @@ int dsa_main(int argc, char **argv)
         }
     }
     argc = opt_num_rest();
-    argv = opt_rest();
+    if (argc != 0)
+        goto opthelp;
 
-# ifndef OPENSSL_NO_ENGINE
-    e = setup_engine(engine, 0);
-# endif
+    private = pubin || pubout ? 0 : 1;
+    if (text && !pubin)
+        private = 1;
 
     if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
         BIO_printf(bio_err, "Error getting passwords\n");
@@ -221,20 +229,24 @@ int dsa_main(int argc, char **argv)
         goto end;
     }
 
-    out = bio_open_default(outfile, "w");
+    out = bio_open_owner(outfile, outformat, private);
     if (out == NULL)
         goto end;
 
-    if (text)
+    if (text) {
+        assert(pubin || private);
         if (!DSA_print(out, dsa, 0)) {
             perror(outfile);
             ERR_print_errors(bio_err);
             goto end;
         }
+    }
 
     if (modulus) {
+        BIGNUM *pub_key = NULL;
+        DSA_get0_key(dsa, &pub_key, NULL);
         BIO_printf(out, "Public Key=");
-        BN_print(out, dsa->pub_key);
+        BN_print(out, pub_key);
         BIO_printf(out, "\n");
     }
 
@@ -246,25 +258,38 @@ int dsa_main(int argc, char **argv)
     if (outformat == FORMAT_ASN1) {
         if (pubin || pubout)
             i = i2d_DSA_PUBKEY_bio(out, dsa);
-        else
+        else {
+            assert(private);
             i = i2d_DSAPrivateKey_bio(out, dsa);
+        }
     } else if (outformat == FORMAT_PEM) {
         if (pubin || pubout)
             i = PEM_write_bio_DSA_PUBKEY(out, dsa);
-        else
+        else {
+            assert(private);
             i = PEM_write_bio_DSAPrivateKey(out, dsa, enc,
                                             NULL, 0, NULL, passout);
+        }
 # if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4)
     } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
         EVP_PKEY *pk;
         pk = EVP_PKEY_new();
         EVP_PKEY_set1_DSA(pk, dsa);
-        if (outformat == FORMAT_PVK)
+        if (outformat == FORMAT_PVK) {
+            if (pubin) {
+                BIO_printf(bio_err, "PVK form impossible with public key input\n");
+                EVP_PKEY_free(pk);
+                goto end;
+            }
+            assert(private);
             i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
+        }
         else if (pubin || pubout)
             i = i2b_PublicKey_bio(out, pk);
-        else
+        else {
+            assert(private);
             i = i2b_PrivateKey_bio(out, pk);
+        }
         EVP_PKEY_free(pk);
 # endif
     } else {
@@ -280,16 +305,8 @@ int dsa_main(int argc, char **argv)
  end:
     BIO_free_all(out);
     DSA_free(dsa);
-    if (passin)
-        OPENSSL_free(passin);
-    if (passout)
-        OPENSSL_free(passout);
+    OPENSSL_free(passin);
+    OPENSSL_free(passout);
     return (ret);
 }
-#else                           /* !OPENSSL_NO_DSA */
-
-# if PEDANTIC
-static void *dummy = &dummy;
-# endif
-
 #endif