Initialize num properly.
[openssl.git] / apps / asn1pars.c
index edeffaa..0d66070 100644 (file)
  * [including the GNU Public Licence.]
  */
 
-/* A nice addition from Dr Stephen Henson <shenson@bigfoot.com> to 
- * add the -strparse option which parses nested binarary structures
+/* A nice addition from Dr Stephen Henson <steve@openssl.org> to 
+ * add the -strparse option which parses nested binary structures
  */
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include "apps.h"
-#include "err.h"
-#include "evp.h"
-#include "x509.h"
-#include "pem.h"
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/x509.h>
+#include <openssl/pem.h>
 
 /* -inform arg - input format - default PEM (DER or PEM)
  * -in arg     - input file - default stdin
  * -i          - indent the details by depth
  * -offset     - where in the file to start
  * -length     - how many bytes to use
- * -oid file   - extra oid decription file
+ * -oid file   - extra oid description file
  */
 
 #undef PROG
 #define PROG   asn1parse_main
 
-int MAIN(argc, argv)
-int argc;
-char **argv;
+int MAIN(int, char **);
+
+static int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf);
+
+int MAIN(int argc, char **argv)
        {
        int i,badops=0,offset=0,ret=1,j;
        unsigned int length=0;
        long num,tmplen;
-       BIO *in=NULL,*out=NULL,*b64=NULL;
-       int informat,indent=0;
-       char *infile=NULL,*str=NULL,*prog,*oidfile=NULL;
+       BIO *in=NULL,*out=NULL,*b64=NULL, *derout = NULL;
+       int informat,indent=0, noout = 0, dump = 0;
+       char *infile=NULL,*str=NULL,*prog,*oidfile=NULL, *derfile=NULL;
+       char *genstr=NULL, *genconf=NULL;
        unsigned char *tmpbuf;
+       const unsigned char *ctmpbuf;
        BUF_MEM *buf=NULL;
-       STACK *osk=NULL;
+       STACK_OF(OPENSSL_STRING) *osk=NULL;
        ASN1_TYPE *at=NULL;
 
        informat=FORMAT_PEM;
@@ -103,12 +107,15 @@ char **argv;
                if ((bio_err=BIO_new(BIO_s_file())) != NULL)
                        BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 
+       if (!load_config(bio_err, NULL))
+               goto end;
+
        prog=argv[0];
        argc--;
        argv++;
-       if ((osk=sk_new_null()) == NULL)
+       if ((osk=sk_OPENSSL_STRING_new_null()) == NULL)
                {
-               BIO_printf(bio_err,"Malloc failure\n");
+               BIO_printf(bio_err,"Memory allocation failure\n");
                goto end;
                }
        while (argc >= 1)
@@ -123,10 +130,16 @@ char **argv;
                        if (--argc < 1) goto bad;
                        infile= *(++argv);
                        }
+               else if (strcmp(*argv,"-out") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       derfile= *(++argv);
+                       }
                else if (strcmp(*argv,"-i") == 0)
                        {
                        indent=1;
                        }
+               else if (strcmp(*argv,"-noout") == 0) noout = 1;
                else if (strcmp(*argv,"-oid") == 0)
                        {
                        if (--argc < 1) goto bad;
@@ -143,10 +156,30 @@ char **argv;
                        length= atoi(*(++argv));
                        if (length == 0) goto bad;
                        }
+               else if (strcmp(*argv,"-dump") == 0)
+                       {
+                       dump= -1;
+                       }
+               else if (strcmp(*argv,"-dlimit") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       dump= atoi(*(++argv));
+                       if (dump <= 0) goto bad;
+                       }
                else if (strcmp(*argv,"-strparse") == 0)
                        {
                        if (--argc < 1) goto bad;
-                       sk_push(osk,*(++argv));
+                       sk_OPENSSL_STRING_push(osk,*(++argv));
+                       }
+               else if (strcmp(*argv,"-genstr") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       genstr= *(++argv);
+                       }
+               else if (strcmp(*argv,"-genconf") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       genconf= *(++argv);
                        }
                else
                        {
@@ -163,15 +196,21 @@ char **argv;
 bad:
                BIO_printf(bio_err,"%s [options] <infile\n",prog);
                BIO_printf(bio_err,"where options are\n");
-               BIO_printf(bio_err," -inform arg   input format - one of DER TXT PEM\n");
-               BIO_printf(bio_err," -in arg       inout file\n");
+               BIO_printf(bio_err," -inform arg   input format - one of DER PEM\n");
+               BIO_printf(bio_err," -in arg       input file\n");
+               BIO_printf(bio_err," -out arg      output file (output format is always DER\n");
+               BIO_printf(bio_err," -noout arg    don't produce any output\n");
                BIO_printf(bio_err," -offset arg   offset into file\n");
-               BIO_printf(bio_err," -length arg   lenth of section in file\n");
+               BIO_printf(bio_err," -length arg   length of section in file\n");
                BIO_printf(bio_err," -i            indent entries\n");
+               BIO_printf(bio_err," -dump         dump unknown data in hex form\n");
+               BIO_printf(bio_err," -dlimit arg   dump the first arg bytes of unknown data in hex form\n");
                BIO_printf(bio_err," -oid file     file of extra oid definitions\n");
                BIO_printf(bio_err," -strparse offset\n");
                BIO_printf(bio_err,"               a series of these can be used to 'dig' into multiple\n");
                BIO_printf(bio_err,"               ASN1 blob wrappings\n");
+               BIO_printf(bio_err," -genstr str   string to generate ASN1 structure from\n");
+               BIO_printf(bio_err," -genconf file file to generate ASN1 structure from\n");
                goto end;
                }
 
@@ -185,6 +224,12 @@ bad:
                goto end;
                }
        BIO_set_fp(out,stdout,BIO_NOCLOSE|BIO_FP_TEXT);
+#ifdef OPENSSL_SYS_VMS
+       {
+       BIO *tmpbio = BIO_new(BIO_f_linebuffer());
+       out = BIO_push(tmpbio, out);
+       }
+#endif
 
        if (oidfile != NULL)
                {
@@ -208,53 +253,90 @@ bad:
                        }
                }
 
+       if (derfile) {
+               if(!(derout = BIO_new_file(derfile, "wb"))) {
+                       BIO_printf(bio_err,"problems opening %s\n",derfile);
+                       ERR_print_errors(bio_err);
+                       goto end;
+               }
+       }
+
        if ((buf=BUF_MEM_new()) == NULL) goto end;
        if (!BUF_MEM_grow(buf,BUFSIZ*8)) goto end; /* Pre-allocate :-) */
 
-       if (informat == FORMAT_PEM)
+       if (genstr || genconf)
                {
-               BIO *tmp;
-
-               if ((b64=BIO_new(BIO_f_base64())) == NULL)
+               num = do_generate(bio_err, genstr, genconf, buf);
+               if (num < 0)
+                       {
+                       ERR_print_errors(bio_err);
                        goto end;
-               BIO_push(b64,in);
-               tmp=in;
-               in=b64;
-               b64=tmp;
+                       }
                }
 
-       num=0;
-       for (;;)
+       else
                {
-               if (!BUF_MEM_grow(buf,(int)num+BUFSIZ)) goto end;
-               i=BIO_read(in,&(buf->data[num]),BUFSIZ);
-               if (i <= 0) break;
-               num+=i;
+
+               if (informat == FORMAT_PEM)
+                       {
+                       BIO *tmp;
+
+                       if ((b64=BIO_new(BIO_f_base64())) == NULL)
+                               goto end;
+                       BIO_push(b64,in);
+                       tmp=in;
+                       in=b64;
+                       b64=tmp;
+                       }
+
+               num=0;
+               for (;;)
+                       {
+                       if (!BUF_MEM_grow(buf,(int)num+BUFSIZ)) goto end;
+                       i=BIO_read(in,&(buf->data[num]),BUFSIZ);
+                       if (i <= 0) break;
+                       num+=i;
+                       }
                }
        str=buf->data;
 
        /* If any structs to parse go through in sequence */
 
-       if (sk_num(osk))
+       if (sk_OPENSSL_STRING_num(osk))
                {
                tmpbuf=(unsigned char *)str;
                tmplen=num;
-               for (i=0; i<sk_num(osk); i++)
+               for (i=0; i<sk_OPENSSL_STRING_num(osk); i++)
                        {
-                       j=atoi(sk_value(osk,i));
+                       ASN1_TYPE *atmp;
+                       int typ;
+                       j=atoi(sk_OPENSSL_STRING_value(osk,i));
                        if (j == 0)
                                {
-                               BIO_printf(bio_err,"'%s' is an invalid number\n",sk_value(osk,i));
+                               BIO_printf(bio_err,"'%s' is an invalid number\n",sk_OPENSSL_STRING_value(osk,i));
                                continue;
                                }
                        tmpbuf+=j;
                        tmplen-=j;
-                       if (d2i_ASN1_TYPE(&at,&tmpbuf,tmplen) == NULL)
+                       atmp = at;
+                       ctmpbuf = tmpbuf;
+                       at = d2i_ASN1_TYPE(NULL,&ctmpbuf,tmplen);
+                       ASN1_TYPE_free(atmp);
+                       if(!at)
                                {
                                BIO_printf(bio_err,"Error parsing structure\n");
                                ERR_print_errors(bio_err);
                                goto end;
                                }
+                       typ = ASN1_TYPE_get(at);
+                       if ((typ == V_ASN1_OBJECT)
+                               || (typ == V_ASN1_NULL))
+                               {
+                               BIO_printf(bio_err, "Can't parse %s type\n",
+                                       typ == V_ASN1_NULL ? "NULL" : "OBJECT");
+                               ERR_print_errors(bio_err);
+                               goto end;
+                               }
                        /* hmm... this is a little evil but it works */
                        tmpbuf=at->value.asn1_string->data;
                        tmplen=at->value.asn1_string->length;
@@ -263,23 +345,101 @@ bad:
                num=tmplen;
                }
 
-       if (length == 0) length=(unsigned int)num;
-       if (!ASN1_parse(out,(unsigned char *)&(str[offset]),length,indent))
+       if (offset >= num)
+               {
+               BIO_printf(bio_err, "Error: offset too large\n");
+               goto end;
+               }
+
+       num -= offset;
+
+       if ((length == 0) || ((long)length > num)) length=(unsigned int)num;
+       if(derout) {
+               if(BIO_write(derout, str + offset, length) != (int)length) {
+                       BIO_printf(bio_err, "Error writing output\n");
+                       ERR_print_errors(bio_err);
+                       goto end;
+               }
+       }
+       if (!noout &&
+           !ASN1_parse_dump(out,(unsigned char *)&(str[offset]),length,
+                   indent,dump))
                {
                ERR_print_errors(bio_err);
                goto end;
                }
        ret=0;
 end:
+       BIO_free(derout);
        if (in != NULL) BIO_free(in);
-       if (out != NULL) BIO_free(out);
+       if (out != NULL) BIO_free_all(out);
        if (b64 != NULL) BIO_free(b64);
        if (ret != 0)
                ERR_print_errors(bio_err);
        if (buf != NULL) BUF_MEM_free(buf);
        if (at != NULL) ASN1_TYPE_free(at);
-       if (osk != NULL) sk_free(osk);
+       if (osk != NULL) sk_OPENSSL_STRING_free(osk);
        OBJ_cleanup();
-       EXIT(ret);
+       apps_shutdown();
+       OPENSSL_EXIT(ret);
        }
 
+static int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf)
+       {
+       CONF *cnf = NULL;
+       int len;
+       long errline;
+       unsigned char *p;
+       ASN1_TYPE *atyp = NULL;
+
+       if (genconf)
+               {
+               cnf = NCONF_new(NULL);
+               if (!NCONF_load(cnf, genconf, &errline))
+                       goto conferr;
+               if (!genstr)
+                       genstr = NCONF_get_string(cnf, "default", "asn1");
+               if (!genstr)
+                       {
+                       BIO_printf(bio, "Can't find 'asn1' in '%s'\n", genconf);
+                       goto err;
+                       }
+               }
+
+       atyp = ASN1_generate_nconf(genstr, cnf);
+       NCONF_free(cnf);
+       cnf = NULL;
+
+       if (!atyp)
+               return -1;
+
+       len = i2d_ASN1_TYPE(atyp, NULL);
+
+       if (len <= 0)
+               goto err;
+
+       if (!BUF_MEM_grow(buf,len))
+               goto err;
+
+       p=(unsigned char *)buf->data;
+
+       i2d_ASN1_TYPE(atyp, &p);
+
+       ASN1_TYPE_free(atyp);
+       return len;
+
+       conferr:
+
+       if (errline > 0)
+               BIO_printf(bio, "Error on line %ld of config file '%s'\n",
+                                                       errline, genconf);
+       else
+               BIO_printf(bio, "Error loading config file '%s'\n", genconf);
+
+       err:
+       NCONF_free(cnf);
+       ASN1_TYPE_free(atyp);
+
+       return -1;
+
+       }