s3: use shared asn1 code.

Guenther

1 files changed, 0 insertions, 603 deletions

diff --git a/source3/libsmb/asn1.c b/source3/libsmb/asn1.c
deleted file mode 100644
index aca1c48841..0000000000
--- a/source3/libsmb/asn1.c
+++ /dev/null
@@ -1,603 +0,0 @@
-/* 
-   Unix SMB/CIFS implementation.
-   simple SPNEGO routines
-   Copyright (C) Andrew Tridgell 2001
-   
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
-   
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-   
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "includes.h"
-
-/* free an asn1 structure */
-void asn1_free(ASN1_DATA *data)
-{
-	struct nesting *nesting = data->nesting;
-
-	while (nesting) {
-		struct nesting *nnext = nesting->next;
-		free(nesting);
-		nesting = nnext;
-	};
-	data->nesting = NULL;
-	SAFE_FREE(data->data);
-}
-
-/* write to the ASN1 buffer, advancing the buffer pointer */
-bool asn1_write(ASN1_DATA *data, const void *p, int len)
-{
-	if (data->has_error) return false;
-	if (data->length < data->ofs+len) {
-		data->data = SMB_REALLOC_ARRAY(data->data, unsigned char,
-					       data->ofs+len);
-		if (!data->data) {
-			data->has_error = true;
-			return false;
-		}
-		data->length = data->ofs+len;
-	}
-	memcpy(data->data + data->ofs, p, len);
-	data->ofs += len;
-	return true;
-}
-
-/* useful fn for writing a uint8 */
-bool asn1_write_uint8(ASN1_DATA *data, uint8 v)
-{
-	return asn1_write(data, &v, 1);
-}
-
-/* push a tag onto the asn1 data buffer. Used for nested structures */
-bool asn1_push_tag(ASN1_DATA *data, uint8 tag)
-{
-	struct nesting *nesting;
-
-	asn1_write_uint8(data, tag);
-	nesting = SMB_MALLOC_P(struct nesting);
-	if (!nesting) {
-		data->has_error = true;
-		return false;
-	}
-
-	nesting->start = data->ofs;
-	nesting->next = data->nesting;
-	data->nesting = nesting;
-	return asn1_write_uint8(data, 0xff);
-}
-
-/* pop a tag */
-bool asn1_pop_tag(ASN1_DATA *data)
-{
-	struct nesting *nesting;
-	size_t len;
-
-	if (data->has_error) {
-		return false;
-	}
-
-	nesting = data->nesting;
-
-	if (!nesting) {
-		data->has_error = true;
-		return false;
-	}
-	len = data->ofs - (nesting->start+1);
-	/* yes, this is ugly. We don't know in advance how many bytes the length
-	   of a tag will take, so we assumed 1 byte. If we were wrong then we 
-	   need to correct our mistake */
-	if (len > 0xFFFF) {
-		data->data[nesting->start] = 0x83;
-		if (!asn1_write_uint8(data, 0)) return false;
-		if (!asn1_write_uint8(data, 0)) return false;
-		if (!asn1_write_uint8(data, 0)) return false;
-		memmove(data->data+nesting->start+4, data->data+nesting->start+1, len);
-		data->data[nesting->start+1] = (len>>16) & 0xFF;
-		data->data[nesting->start+2] = (len>>8) & 0xFF;
-		data->data[nesting->start+3] = len&0xff;
-	} else if (len > 255) {
-		data->data[nesting->start] = 0x82;
-		if (!asn1_write_uint8(data, 0)) return false;
-		if (!asn1_write_uint8(data, 0)) return false;
-		memmove(data->data+nesting->start+3, data->data+nesting->start+1, len);
-		data->data[nesting->start+1] = len>>8;
-		data->data[nesting->start+2] = len&0xff;
-	} else if (len > 127) {
-		data->data[nesting->start] = 0x81;
-		if (!asn1_write_uint8(data, 0)) return false;
-		memmove(data->data+nesting->start+2, data->data+nesting->start+1, len);
-		data->data[nesting->start+1] = len;
-	} else {
-		data->data[nesting->start] = len;
-	}
-
-	data->nesting = nesting->next;
-	free(nesting);
-	return true;
-}
-
-
-/* write an integer */
-bool asn1_write_Integer(ASN1_DATA *data, int i)
-{
-	if (!asn1_push_tag(data, ASN1_INTEGER)) return false;
-	do {
-		asn1_write_uint8(data, i);
-		i = i >> 8;
-	} while (i);
-	return asn1_pop_tag(data);
-}
-
-/* write an object ID to a ASN1 buffer */
-bool asn1_write_OID(ASN1_DATA *data, const char *OID)
-{
-	unsigned v, v2;
-	const char *p = (const char *)OID;
-	char *newp;
-
-	if (!asn1_push_tag(data, ASN1_OID))
-		return false;
-	v = strtol(p, &newp, 10);
-	p = newp;
-	v2 = strtol(p, &newp, 10);
-	p = newp;
-	if (!asn1_write_uint8(data, 40*v + v2))
-		return false;
-
-	while (*p) {
-		v = strtol(p, &newp, 10);
-		p = newp;
-		if (v >= (1<<28)) asn1_write_uint8(data, 0x80 | ((v>>28)&0xff));
-		if (v >= (1<<21)) asn1_write_uint8(data, 0x80 | ((v>>21)&0xff));
-		if (v >= (1<<14)) asn1_write_uint8(data, 0x80 | ((v>>14)&0xff));
-		if (v >= (1<<7)) asn1_write_uint8(data, 0x80 | ((v>>7)&0xff));
-		if (!asn1_write_uint8(data, v&0x7f))
-			return false;
-	}
-	return asn1_pop_tag(data);
-}
-
-/* write an octet string */
-bool asn1_write_OctetString(ASN1_DATA *data, const void *p, size_t length)
-{
-	asn1_push_tag(data, ASN1_OCTET_STRING);
-	asn1_write(data, p, length);
-	asn1_pop_tag(data);
-	return !data->has_error;
-}
-
-/* write a general string */
-bool asn1_write_GeneralString(ASN1_DATA *data, const char *s)
-{
-	asn1_push_tag(data, ASN1_GENERAL_STRING);
-	asn1_write(data, s, strlen(s));
-	asn1_pop_tag(data);
-	return !data->has_error;
-}
-
-/* write a BOOLEAN */
-bool asn1_write_BOOLEAN(ASN1_DATA *data, bool v)
-{
-	asn1_write_uint8(data, ASN1_BOOLEAN);
-	asn1_write_uint8(data, v);
-	return !data->has_error;
-}
-
-/* write a BOOLEAN - hmm, I suspect this one is the correct one, and the 
-   above boolean is bogus. Need to check */
-bool asn1_write_BOOLEAN2(ASN1_DATA *data, bool v)
-{
-	asn1_push_tag(data, ASN1_BOOLEAN);
-	asn1_write_uint8(data, v);
-	asn1_pop_tag(data);
-	return !data->has_error;
-}
-
-/* check a BOOLEAN */
-bool asn1_check_BOOLEAN(ASN1_DATA *data, bool v)
-{
-	uint8 b = 0;
-
-	asn1_read_uint8(data, &b);
-	if (b != ASN1_BOOLEAN) {
-		data->has_error = true;
-		return false;
-	}
-	asn1_read_uint8(data, &b);
-	if (b != v) {
-		data->has_error = true;
-		return false;
-	}
-	return !data->has_error;
-}
-
-
-/* load a ASN1_DATA structure with a lump of data, ready to be parsed */
-bool asn1_load(ASN1_DATA *data, DATA_BLOB blob)
-{
-	ZERO_STRUCTP(data);
-	data->data = (unsigned char *)memdup(blob.data, blob.length);
-	if (!data->data) {
-		data->has_error = true;
-		return false;
-	}
-	data->length = blob.length;
-	return true;
-}
-
-/* read from a ASN1 buffer, advancing the buffer pointer */
-bool asn1_read(ASN1_DATA *data, void *p, int len)
-{
-	if (data->has_error)
-		return false;
-
-	if (len < 0 || data->ofs + len < data->ofs || data->ofs + len < len) {
-		data->has_error = true;
-		return false;
-	}
-
-	if (data->ofs + len > data->length) {
-		data->has_error = true;
-		return false;
-	}
-	memcpy(p, data->data + data->ofs, len);
-	data->ofs += len;
-	return true;
-}
-
-/* read a uint8 from a ASN1 buffer */
-bool asn1_read_uint8(ASN1_DATA *data, uint8 *v)
-{
-	return asn1_read(data, v, 1);
-}
-
-/*
- * Check thta the value of the ASN1 buffer at the current offset equals tag.
- */
-bool asn1_check_tag(ASN1_DATA *data, uint8 tag)
-{
-	if (data->has_error || data->ofs >= data->length || data->ofs < 0) {
-		data->has_error = true;
-		return false;
-	}
-
-	return (tag == data->data[data->ofs]);
-}
-
-/* start reading a nested asn1 structure */
-bool asn1_start_tag(ASN1_DATA *data, uint8 tag)
-{
-	uint8 b;
-	struct nesting *nesting;
-	
-	if (!asn1_read_uint8(data, &b))
-		return false;
-
-	if (b != tag) {
-		data->has_error = true;
-		return false;
-	}
-	nesting = SMB_MALLOC_P(struct nesting);
-	if (!nesting) {
-		data->has_error = true;
-		return false;
-	}
-
-	if (!asn1_read_uint8(data, &b)) {
-		SAFE_FREE(nesting);
-		return false;
-	}
-
-	if (b & 0x80) {
-		int n = b & 0x7f;
-		if (!asn1_read_uint8(data, &b)) {
-			SAFE_FREE(nesting);
-			return false;
-		}
-		nesting->taglen = b;
-		while (n > 1) {
-			if (!asn1_read_uint8(data, &b)) {
-				SAFE_FREE(nesting);
-				return false;
-			}
-			nesting->taglen = (nesting->taglen << 8) | b;
-			n--;
-		}
-	} else {
-		nesting->taglen = b;
-	}
-	nesting->start = data->ofs;
-	nesting->next = data->nesting;
-	data->nesting = nesting;
-	return !data->has_error;
-}
-
-
-/* stop reading a tag */
-bool asn1_end_tag(ASN1_DATA *data)
-{
-	struct nesting *nesting;
-
-	/* make sure we read it all */
-	if (asn1_tag_remaining(data) != 0) {
-		data->has_error = true;
-		return false;
-	}
-
-	nesting = data->nesting;
-
-	if (!nesting) {
-		data->has_error = true;
-		return false;
-	}
-
-	data->nesting = nesting->next;
-	free(nesting);
-	return true;
-}
-
-/* work out how many bytes are left in this nested tag */
-int asn1_tag_remaining(ASN1_DATA *data)
-{
-	if (data->has_error)
-		return 0;
-
-	if (!data->nesting) {
-		data->has_error = true;
-		return -1;
-	}
-	return data->nesting->taglen - (data->ofs - data->nesting->start);
-}
-
-/* read an object ID from a ASN1 buffer */
-bool asn1_read_OID(ASN1_DATA *data, char **OID)
-{
-	uint8 b = 0;
-	char *oid_str = NULL;
-
-	*OID = NULL;
-
-	if (!asn1_start_tag(data, ASN1_OID)) {
-		return false;
-	}
-	asn1_read_uint8(data, &b);
-
-	oid_str = talloc_asprintf(NULL,
-			"%u",
-			b/40);
-	if (!oid_str) {
-		data->has_error = true;
-		goto out;
-	}
-	oid_str = talloc_asprintf_append(oid_str,
-			" %u",
-			b%40);
-	if (!oid_str) {
-		data->has_error = true;
-		goto out;
-	}
-
-	while (asn1_tag_remaining(data) > 0) {
-		unsigned v = 0;
-		do {
-			asn1_read_uint8(data, &b);
-			v = (v<<7) | (b&0x7f);
-		} while (!data->has_error && b & 0x80);
-		oid_str = talloc_asprintf_append(oid_str,
-					" %u",
-					v);
-		if (!oid_str) {
-			data->has_error = true;
-			goto out;
-		}
-	}
-
-  out:
-
-	asn1_end_tag(data);
-
-	if (!data->has_error) {
-	  	*OID = SMB_STRDUP(oid_str);
-	}
-
-	TALLOC_FREE(oid_str);
-
-	return !data->has_error;
-}
-
-/* check that the next object ID is correct */
-bool asn1_check_OID(ASN1_DATA *data, const char *OID)
-{
-	char *id;
-
-	if (!asn1_read_OID(data, &id)) {
-		return false;
-	}
-
-	if (strcmp(id, OID) != 0) {
-		data->has_error = true;
-		free(id);
-		return false;
-	}
-	free(id);
-	return true;
-}
-
-/* read a GeneralString from a ASN1 buffer */
-bool asn1_read_GeneralString(ASN1_DATA *data, char **s)
-{
-	int len;
-	char *str;
-
-	*s = NULL;
-
-	if (!asn1_start_tag(data, ASN1_GENERAL_STRING)) {
-		return false;
-	}
-	len = asn1_tag_remaining(data);
-	if (len < 0) {
-		data->has_error = true;
-		return false;
-	}
-	str = SMB_MALLOC_ARRAY(char, len+1);
-	if (!str) {
-		data->has_error = true;
-		return false;
-	}
-	asn1_read(data, str, len);
-	str[len] = 0;
-	asn1_end_tag(data);
-
-	if (!data->has_error) {
-		*s = str;
-	}
-	return !data->has_error;
-}
-
-/* read a octet string blob */
-bool asn1_read_OctetString(ASN1_DATA *data, DATA_BLOB *blob)
-{
-	int len;
-	ZERO_STRUCTP(blob);
-	if (!asn1_start_tag(data, ASN1_OCTET_STRING)) return false;
-	len = asn1_tag_remaining(data);
-	if (len < 0) {
-		data->has_error = true;
-		return false;
-	}
-	*blob = data_blob(NULL, len);
-	asn1_read(data, blob->data, len);
-	asn1_end_tag(data);
-	return !data->has_error;
-}
-
-/* read an interger */
-bool asn1_read_Integer(ASN1_DATA *data, int *i)
-{
-	uint8 b;
-	*i = 0;
-	
-	if (!asn1_start_tag(data, ASN1_INTEGER)) return false;
-	while (asn1_tag_remaining(data)>0) {
-		asn1_read_uint8(data, &b);
-		*i = (*i << 8) + b;
-	}
-	return asn1_end_tag(data);	
-	
-}
-
-/* check a enumarted value is correct */
-bool asn1_check_enumerated(ASN1_DATA *data, int v)
-{
-	uint8 b;
-	if (!asn1_start_tag(data, ASN1_ENUMERATED)) return false;
-	asn1_read_uint8(data, &b);
-	asn1_end_tag(data);
-
-	if (v != b)
-		data->has_error = false;
-
-	return !data->has_error;
-}
-
-/* write an enumarted value to the stream */
-bool asn1_write_enumerated(ASN1_DATA *data, uint8 v)
-{
-	if (!asn1_push_tag(data, ASN1_ENUMERATED)) return false;
-	asn1_write_uint8(data, v);
-	asn1_pop_tag(data);
-	return !data->has_error;
-}
-
-bool ber_write_OID_String(DATA_BLOB *blob, const char *OID)
-{
-	uint_t v, v2;
-	const char *p = (const char *)OID;
-	char *newp;
-	int i;
-
-	v = strtoul(p, &newp, 10);
-	if (newp[0] != '.') return false;
-	p = newp + 1;
-
-	v2 = strtoul(p, &newp, 10);
-	if (newp[0] != '.') return false;
-	p = newp + 1;
-
-	/*the ber representation can't use more space then the string one */
-	*blob = data_blob(NULL, strlen(OID));
-	if (!blob->data) return false;
-
-	blob->data[0] = 40*v + v2;
-
-	i = 1;
-	while (*p) {
-		v = strtoul(p, &newp, 10);
-		if (newp[0] == '.') {
-			p = newp + 1;
-		} else if (newp[0] == '\0') {
-			p = newp;
-		} else {
-			data_blob_free(blob);
-			return false;
-		}
-		if (v >= (1<<28)) blob->data[i++] = (0x80 | ((v>>28)&0x7f));
-		if (v >= (1<<21)) blob->data[i++] = (0x80 | ((v>>21)&0x7f));
-		if (v >= (1<<14)) blob->data[i++] = (0x80 | ((v>>14)&0x7f));
-		if (v >= (1<<7)) blob->data[i++] = (0x80 | ((v>>7)&0x7f));
-		blob->data[i++] = (v&0x7f);
-	}
-
-	blob->length = i;
-
-	return true;
-}
-
-/* read an object ID from a data blob */
-bool ber_read_OID_String(TALLOC_CTX *mem_ctx, DATA_BLOB blob, const char **OID)
-{
-	int i;
-	uint8_t *b;
-	uint_t v;
-	char *tmp_oid = NULL;
-
-	if (blob.length < 2) return false;
-
-	b = blob.data;
-
-	tmp_oid = talloc_asprintf(mem_ctx, "%u",  b[0]/40);
-	if (!tmp_oid) goto nomem;
-	tmp_oid = talloc_asprintf_append_buffer(tmp_oid, ".%u",  b[0]%40);
-	if (!tmp_oid) goto nomem;
-
-	for(i = 1, v = 0; i < blob.length; i++) {
-		v = (v<<7) | (b[i]&0x7f);
-		if ( ! (b[i] & 0x80)) {
-			tmp_oid = talloc_asprintf_append_buffer(tmp_oid, ".%u",  v);
-			v = 0;
-		}
-		if (!tmp_oid) goto nomem;
-	}
-
-	if (v != 0) {
-		talloc_free(tmp_oid);
-		return false;
-	}
-
-	*OID = tmp_oid;
-	return true;
-
-nomem:
-	return false;
-}
-
-