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Add the possibility to get hexdumps of unprintable data when using

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'openssl asn1parse'.  As a side effect, the functions ASN1_parse_dump
and BIO_dump_indent are added.
This commit is contained in:
Richard Levitte 2000-07-27 17:28:25 +00:00
parent f6c1c9e95d
commit ca1e465f6d
6 changed files with 94 additions and 19 deletions
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5
CHANGES
View file

@ -4,6 +4,11 @@
Changes between 0.9.5a and 0.9.6 [xx XXX 2000]
*) Make it possible to get hexdumps of unprintable data with 'openssl
asn1parse'. By implication, the functions ASN1_parse_dump() and
BIO_dump_indent() are added.
[Richard Levitte]
*) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
Also change the functions X509_cmp_current_time() and
X509_gmtime_adj() work with an ASN1_TIME structure,

17
apps/asn1pars.c
View file

@ -88,7 +88,7 @@ int MAIN(int argc, char **argv)
unsigned int length=0;
long num,tmplen;
BIO *in=NULL,*out=NULL,*b64=NULL, *derout = NULL;
int informat,indent=0, noout = 0;
int informat,indent=0, noout = 0, dump = 0;
char *infile=NULL,*str=NULL,*prog,*oidfile=NULL, *derfile=NULL;
unsigned char *tmpbuf;
BUF_MEM *buf=NULL;
@ -149,6 +149,16 @@ int MAIN(int argc, 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;
@ -176,6 +186,8 @@ bad:
BIO_printf(bio_err," -offset arg offset into 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");
@ -293,7 +305,8 @@ bad:
}
}
if (!noout &&
!ASN1_parse(out,(unsigned char *)&(str[offset]),length,indent))
!ASN1_parse_dump(out,(unsigned char *)&(str[offset]),length,
indent,dump))
{
ERR_print_errors(bio_err);
goto end;

1
crypto/asn1/asn1.h
View file

@ -737,6 +737,7 @@ int ASN1_GENERALIZEDTIME_print(BIO *fp,ASN1_GENERALIZEDTIME *a);
int ASN1_TIME_print(BIO *fp,ASN1_TIME *a);
int ASN1_STRING_print(BIO *bp,ASN1_STRING *v);
int ASN1_parse(BIO *bp,unsigned char *pp,long len,int indent);
int ASN1_parse_dump(BIO *bp,unsigned char *pp,long len,int indent,int dump);
#endif
const char *ASN1_tag2str(int tag);

48
crypto/asn1/asn1_par.c
View file

@ -65,7 +65,7 @@
static int asn1_print_info(BIO *bp, int tag, int xclass,int constructed,
int indent);
static int asn1_parse2(BIO *bp, unsigned char **pp, long length,
int offset, int depth, int indent);
int offset, int depth, int indent, int dump);
static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed,
int indent)
{
@ -110,11 +110,16 @@ err:
int ASN1_parse(BIO *bp, unsigned char *pp, long len, int indent)
{
return(asn1_parse2(bp,&pp,len,0,0,indent));
return(asn1_parse2(bp,&pp,len,0,0,indent,0));
}
int ASN1_parse_dump(BIO *bp, unsigned char *pp, long len, int indent, int dump)
{
return(asn1_parse2(bp,&pp,len,0,0,indent,dump));
}
static int asn1_parse2(BIO *bp, unsigned char **pp, long length, int offset,
int depth, int indent)
int depth, int indent, int dump)
{
unsigned char *p,*ep,*tot,*op,*opp;
long len;
@ -123,7 +128,13 @@ static int asn1_parse2(BIO *bp, unsigned char **pp, long length, int offset,
ASN1_OBJECT *o=NULL;
ASN1_OCTET_STRING *os=NULL;
/* ASN1_BMPSTRING *bmp=NULL;*/
int dump_indent;
#if 0
dump_indent = indent;
#else
dump_indent = 6; /* Because we know BIO_dump_indent() */
#endif
p= *pp;
tot=p+length;
op=p-1;
@ -178,7 +189,7 @@ static int asn1_parse2(BIO *bp, unsigned char **pp, long length, int offset,
{
r=asn1_parse2(bp,&p,(long)(tot-p),
offset+(p - *pp),depth+1,
indent);
indent,dump);
if (r == 0) { ret=0; goto end; }
if ((r == 2) || (p >= tot)) break;
}
@ -188,7 +199,7 @@ static int asn1_parse2(BIO *bp, unsigned char **pp, long length, int offset,
{
r=asn1_parse2(bp,&p,(long)len,
offset+(p - *pp),depth+1,
indent);
indent,dump);
if (r == 0) { ret=0; goto end; }
}
}
@ -273,6 +284,20 @@ static int asn1_parse2(BIO *bp, unsigned char **pp, long length, int offset,
os->length) <= 0)
goto end;
}
if (!printable && (os->length > 0)
&& dump)
{
if (!nl)
{
if (BIO_write(bp,"\n",1) <= 0)
goto end;
}
if (BIO_dump_indent(bp,opp,
((dump == -1 || dump > os->length)?os->length:dump),
dump_indent) <= 0)
goto end;
nl=1;
}
M_ASN1_OCTET_STRING_free(os);
os=NULL;
}
@ -341,6 +366,19 @@ static int asn1_parse2(BIO *bp, unsigned char **pp, long length, int offset,
}
M_ASN1_ENUMERATED_free(bs);
}
else if (len > 0 && dump)
{
if (!nl)
{
if (BIO_write(bp,"\n",1) <= 0)
goto end;
}
if (BIO_dump_indent(bp,p,
((dump == -1 || dump > len)?len:dump),
dump_indent) <= 0)
goto end;
nl=1;
}
if (!nl)
{

41
crypto/bio/b_dump.c
View file

@ -66,13 +66,20 @@
#define TRUNCATE
#define DUMP_WIDTH 16
#define DUMP_WIDTH_LESS_INDENT(i) (DUMP_WIDTH-((i-(i>6?6:i)+3)/4))
int BIO_dump(BIO *bio, const char *s, int len)
{
return BIO_dump_indent(bio, s, len, 0);
}
int BIO_dump_indent(BIO *bio, const char *s, int len, int indent)
{
int ret=0;
char buf[160+1],tmp[20];
char buf[288+1],tmp[20],str[128+1];
int i,j,rows,trunc;
unsigned char ch;
int dump_width;
trunc=0;
@ -81,27 +88,37 @@ int BIO_dump(BIO *bio, const char *s, int len)
trunc++;
#endif
rows=(len/DUMP_WIDTH);
if ((rows*DUMP_WIDTH)<len)
if (indent < 0)
indent = 0;
if (indent) {
if (indent > 128) indent=128;
memset(str,' ',indent);
}
str[indent]='\0';
dump_width=DUMP_WIDTH_LESS_INDENT(indent);
rows=(len/dump_width);
if ((rows*dump_width)<len)
rows++;
for(i=0;i<rows;i++) {
buf[0]='\0'; /* start with empty string */
sprintf(tmp,"%04x - ",i*DUMP_WIDTH);
strcpy(buf,tmp);
for(j=0;j<DUMP_WIDTH;j++) {
if (((i*DUMP_WIDTH)+j)>=len) {
strcpy(buf,str);
sprintf(tmp,"%04x - ",i*dump_width);
strcat(buf,tmp);
for(j=0;j<dump_width;j++) {
if (((i*dump_width)+j)>=len) {
strcat(buf," ");
} else {
ch=((unsigned char)*(s+i*DUMP_WIDTH+j)) & 0xff;
ch=((unsigned char)*(s+i*dump_width+j)) & 0xff;
sprintf(tmp,"%02x%c",ch,j==7?'-':' ');
strcat(buf,tmp);
}
}
strcat(buf," ");
for(j=0;j<DUMP_WIDTH;j++) {
if (((i*DUMP_WIDTH)+j)>=len)
for(j=0;j<dump_width;j++) {
if (((i*dump_width)+j)>=len)
break;
ch=((unsigned char)*(s+i*DUMP_WIDTH+j)) & 0xff;
ch=((unsigned char)*(s+i*dump_width+j)) & 0xff;
#ifndef CHARSET_EBCDIC
sprintf(tmp,"%c",((ch>=' ')&&(ch<='~'))?ch:'.');
#else
@ -119,7 +136,7 @@ int BIO_dump(BIO *bio, const char *s, int len)
}
#ifdef TRUNCATE
if (trunc > 0) {
sprintf(buf,"%04x - <SPACES/NULS>\n",len+trunc);
sprintf(buf,"%s%04x - <SPACES/NULS>\n",str,len+trunc);
ret+=BIO_write(bio,(char *)buf,strlen(buf));
}
#endif

1
crypto/bio/bio.h
View file

@ -559,6 +559,7 @@ int BIO_sock_non_fatal_error(int error);
int BIO_fd_should_retry(int i);
int BIO_fd_non_fatal_error(int error);
int BIO_dump(BIO *b,const char *bytes,int len);
int BIO_dump_indent(BIO *b,const char *bytes,int len,int indent);
struct hostent *BIO_gethostbyname(const char *name);
/* We might want a thread-safe interface too: