-/* ocsp_ht.c */
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project 2006.
- */
-/* ====================================================================
- * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
+/*
+ * Copyright 2001-2017 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
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
+#include "e_os.h"
#include <stdio.h>
#include <stdlib.h>
-#include <ctype.h>
+#include "internal/ctype.h"
#include <string.h>
-#include "e_os.h"
#include <openssl/asn1.h>
#include <openssl/ocsp.h>
#include <openssl/err.h>
/* Opaque OCSP request status structure */
struct ocsp_req_ctx_st {
- int state; /* Current I/O state */
- unsigned char *iobuf; /* Line buffer */
- int iobuflen; /* Line buffer length */
- BIO *io; /* BIO to perform I/O with */
- BIO *mem; /* Memory BIO response is built into */
- unsigned long asn1_len; /* ASN1 length of response */
- unsigned long max_resp_len; /* Maximum length of response */
- };
-
-#define OCSP_MAX_RESP_LENGTH (100 * 1024)
-#define OCSP_MAX_LINE_LEN 4096;
+ int state; /* Current I/O state */
+ unsigned char *iobuf; /* Line buffer */
+ int iobuflen; /* Line buffer length */
+ BIO *io; /* BIO to perform I/O with */
+ BIO *mem; /* Memory BIO response is built into */
+ unsigned long asn1_len; /* ASN1 length of response */
+ unsigned long max_resp_len; /* Maximum length of response */
+};
+
+#define OCSP_MAX_RESP_LENGTH (100 * 1024)
+#define OCSP_MAX_LINE_LEN 4096;
/* OCSP states */
/* If set no reading should be performed */
-#define OHS_NOREAD 0x1000
+#define OHS_NOREAD 0x1000
/* Error condition */
-#define OHS_ERROR (0 | OHS_NOREAD)
+#define OHS_ERROR (0 | OHS_NOREAD)
/* First line being read */
-#define OHS_FIRSTLINE 1
+#define OHS_FIRSTLINE 1
/* MIME headers being read */
-#define OHS_HEADERS 2
+#define OHS_HEADERS 2
/* OCSP initial header (tag + length) being read */
-#define OHS_ASN1_HEADER 3
+#define OHS_ASN1_HEADER 3
/* OCSP content octets being read */
-#define OHS_ASN1_CONTENT 4
+#define OHS_ASN1_CONTENT 4
/* First call: ready to start I/O */
-#define OHS_ASN1_WRITE_INIT (5 | OHS_NOREAD)
+#define OHS_ASN1_WRITE_INIT (5 | OHS_NOREAD)
/* Request being sent */
-#define OHS_ASN1_WRITE (6 | OHS_NOREAD)
+#define OHS_ASN1_WRITE (6 | OHS_NOREAD)
/* Request being flushed */
-#define OHS_ASN1_FLUSH (7 | OHS_NOREAD)
+#define OHS_ASN1_FLUSH (7 | OHS_NOREAD)
/* Completed */
-#define OHS_DONE (8 | OHS_NOREAD)
+#define OHS_DONE (8 | OHS_NOREAD)
/* Headers set, no final \r\n included */
-#define OHS_HTTP_HEADER (9 | OHS_NOREAD)
-
+#define OHS_HTTP_HEADER (9 | OHS_NOREAD)
static int parse_http_line1(char *line);
OCSP_REQ_CTX *OCSP_REQ_CTX_new(BIO *io, int maxline)
- {
- OCSP_REQ_CTX *rctx;
- rctx = OPENSSL_malloc(sizeof(OCSP_REQ_CTX));
- if (!rctx)
- return NULL;
- rctx->state = OHS_ERROR;
- rctx->max_resp_len = OCSP_MAX_RESP_LENGTH;
- rctx->mem = BIO_new(BIO_s_mem());
- rctx->io = io;
- rctx->asn1_len = 0;
- if (maxline > 0)
- rctx->iobuflen = maxline;
- else
- rctx->iobuflen = OCSP_MAX_LINE_LEN;
- rctx->iobuf = OPENSSL_malloc(rctx->iobuflen);
- if (!rctx->iobuf || !rctx->mem)
- {
- OCSP_REQ_CTX_free(rctx);
- return NULL;
- }
- return rctx;
- }
+{
+ OCSP_REQ_CTX *rctx = OPENSSL_zalloc(sizeof(*rctx));
+
+ if (rctx == NULL)
+ return NULL;
+ rctx->state = OHS_ERROR;
+ rctx->max_resp_len = OCSP_MAX_RESP_LENGTH;
+ rctx->mem = BIO_new(BIO_s_mem());
+ rctx->io = io;
+ if (maxline > 0)
+ rctx->iobuflen = maxline;
+ else
+ rctx->iobuflen = OCSP_MAX_LINE_LEN;
+ rctx->iobuf = OPENSSL_malloc(rctx->iobuflen);
+ if (rctx->iobuf == NULL || rctx->mem == NULL) {
+ OCSP_REQ_CTX_free(rctx);
+ return NULL;
+ }
+ return rctx;
+}
void OCSP_REQ_CTX_free(OCSP_REQ_CTX *rctx)
- {
- if (rctx->mem)
- BIO_free(rctx->mem);
- if (rctx->iobuf)
- OPENSSL_free(rctx->iobuf);
- OPENSSL_free(rctx);
- }
+{
+ if (!rctx)
+ return;
+ BIO_free(rctx->mem);
+ OPENSSL_free(rctx->iobuf);
+ OPENSSL_free(rctx);
+}
BIO *OCSP_REQ_CTX_get0_mem_bio(OCSP_REQ_CTX *rctx)
- {
- return rctx->mem;
- }
+{
+ return rctx->mem;
+}
void OCSP_set_max_response_length(OCSP_REQ_CTX *rctx, unsigned long len)
- {
- if (len == 0)
- rctx->max_resp_len = OCSP_MAX_RESP_LENGTH;
- else
- rctx->max_resp_len = len;
- }
+{
+ if (len == 0)
+ rctx->max_resp_len = OCSP_MAX_RESP_LENGTH;
+ else
+ rctx->max_resp_len = len;
+}
int OCSP_REQ_CTX_i2d(OCSP_REQ_CTX *rctx, const ASN1_ITEM *it, ASN1_VALUE *val)
- {
- static const char req_hdr[] =
- "Content-Type: application/ocsp-request\r\n"
- "Content-Length: %d\r\n\r\n";
- int reqlen = ASN1_item_i2d(val, NULL, it);
- if (BIO_printf(rctx->mem, req_hdr, reqlen) <= 0)
- return 0;
- if (ASN1_item_i2d_bio(it, rctx->mem, val) <= 0)
- return 0;
- rctx->state = OHS_ASN1_WRITE_INIT;
- return 1;
- }
+{
+ static const char req_hdr[] =
+ "Content-Type: application/ocsp-request\r\n"
+ "Content-Length: %d\r\n\r\n";
+ int reqlen = ASN1_item_i2d(val, NULL, it);
+ if (BIO_printf(rctx->mem, req_hdr, reqlen) <= 0)
+ return 0;
+ if (ASN1_item_i2d_bio(it, rctx->mem, val) <= 0)
+ return 0;
+ rctx->state = OHS_ASN1_WRITE_INIT;
+ return 1;
+}
int OCSP_REQ_CTX_nbio_d2i(OCSP_REQ_CTX *rctx,
- ASN1_VALUE **pval, const ASN1_ITEM *it)
- {
- int rv, len;
- const unsigned char *p;
-
- rv = OCSP_REQ_CTX_nbio(rctx);
- if (rv != 1)
- return rv;
-
- len = BIO_get_mem_data(rctx->mem, &p);
- *pval = ASN1_item_d2i(NULL, &p, len, it);
- if (*pval == NULL)
- {
- rctx->state = OHS_ERROR;
- return 0;
- }
- return 1;
- }
+ ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+ int rv, len;
+ const unsigned char *p;
+
+ rv = OCSP_REQ_CTX_nbio(rctx);
+ if (rv != 1)
+ return rv;
+
+ len = BIO_get_mem_data(rctx->mem, &p);
+ *pval = ASN1_item_d2i(NULL, &p, len, it);
+ if (*pval == NULL) {
+ rctx->state = OHS_ERROR;
+ return 0;
+ }
+ return 1;
+}
int OCSP_REQ_CTX_http(OCSP_REQ_CTX *rctx, const char *op, const char *path)
- {
- static const char http_hdr[] = "%s %s HTTP/1.0\r\n";
+{
+ static const char http_hdr[] = "%s %s HTTP/1.0\r\n";
- if (!path)
- path = "/";
+ if (!path)
+ path = "/";
- if (BIO_printf(rctx->mem, http_hdr, op, path) <= 0)
- return 0;
- rctx->state = OHS_HTTP_HEADER;
- return 1;
- }
+ if (BIO_printf(rctx->mem, http_hdr, op, path) <= 0)
+ return 0;
+ rctx->state = OHS_HTTP_HEADER;
+ return 1;
+}
int OCSP_REQ_CTX_set1_req(OCSP_REQ_CTX *rctx, OCSP_REQUEST *req)
- {
- return OCSP_REQ_CTX_i2d(rctx, ASN1_ITEM_rptr(OCSP_REQUEST),
- (ASN1_VALUE *)req);
- }
+{
+ return OCSP_REQ_CTX_i2d(rctx, ASN1_ITEM_rptr(OCSP_REQUEST),
+ (ASN1_VALUE *)req);
+}
int OCSP_REQ_CTX_add1_header(OCSP_REQ_CTX *rctx,
- const char *name, const char *value)
- {
- if (!name)
- return 0;
- if (BIO_puts(rctx->mem, name) <= 0)
- return 0;
- if (value)
- {
- if (BIO_write(rctx->mem, ": ", 2) != 2)
- return 0;
- if (BIO_puts(rctx->mem, value) <= 0)
- return 0;
- }
- if (BIO_write(rctx->mem, "\r\n", 2) != 2)
- return 0;
- rctx->state = OHS_HTTP_HEADER;
- return 1;
- }
+ const char *name, const char *value)
+{
+ if (!name)
+ return 0;
+ if (BIO_puts(rctx->mem, name) <= 0)
+ return 0;
+ if (value) {
+ if (BIO_write(rctx->mem, ": ", 2) != 2)
+ return 0;
+ if (BIO_puts(rctx->mem, value) <= 0)
+ return 0;
+ }
+ if (BIO_write(rctx->mem, "\r\n", 2) != 2)
+ return 0;
+ rctx->state = OHS_HTTP_HEADER;
+ return 1;
+}
OCSP_REQ_CTX *OCSP_sendreq_new(BIO *io, const char *path, OCSP_REQUEST *req,
- int maxline)
- {
-
- OCSP_REQ_CTX *rctx = NULL;
- rctx = OCSP_REQ_CTX_new(io, maxline);
- if (!rctx)
- return NULL;
-
- if (!OCSP_REQ_CTX_http(rctx, "POST", path))
- goto err;
-
- if (req && !OCSP_REQ_CTX_set1_req(rctx, req))
- goto err;
-
- return rctx;
-
- err:
- OCSP_REQ_CTX_free(rctx);
- return NULL;
- }
-
-/* Parse the HTTP response. This will look like this:
- * "HTTP/1.0 200 OK". We need to obtain the numeric code and
- * (optional) informational message.
+ int maxline)
+{
+
+ OCSP_REQ_CTX *rctx = NULL;
+ rctx = OCSP_REQ_CTX_new(io, maxline);
+ if (rctx == NULL)
+ return NULL;
+
+ if (!OCSP_REQ_CTX_http(rctx, "POST", path))
+ goto err;
+
+ if (req && !OCSP_REQ_CTX_set1_req(rctx, req))
+ goto err;
+
+ return rctx;
+
+ err:
+ OCSP_REQ_CTX_free(rctx);
+ return NULL;
+}
+
+/*
+ * Parse the HTTP response. This will look like this: "HTTP/1.0 200 OK". We
+ * need to obtain the numeric code and (optional) informational message.
*/
static int parse_http_line1(char *line)
- {
- int retcode;
- char *p, *q, *r;
- /* Skip to first white space (passed protocol info) */
-
- for(p = line; *p && !isspace((unsigned char)*p); p++)
- continue;
- if(!*p)
- {
- OCSPerr(OCSP_F_PARSE_HTTP_LINE1,
- OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
- return 0;
- }
-
- /* Skip past white space to start of response code */
- while(*p && isspace((unsigned char)*p))
- p++;
-
- if(!*p)
- {
- OCSPerr(OCSP_F_PARSE_HTTP_LINE1,
- OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
- return 0;
- }
-
- /* Find end of response code: first whitespace after start of code */
- for(q = p; *q && !isspace((unsigned char)*q); q++)
- continue;
-
- if(!*q)
- {
- OCSPerr(OCSP_F_PARSE_HTTP_LINE1,
- OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
- return 0;
- }
-
- /* Set end of response code and start of message */
- *q++ = 0;
-
- /* Attempt to parse numeric code */
- retcode = strtoul(p, &r, 10);
-
- if(*r)
- return 0;
-
- /* Skip over any leading white space in message */
- while(*q && isspace((unsigned char)*q))
- q++;
-
- if(*q)
- {
- /* Finally zap any trailing white space in message (include
- * CRLF) */
-
- /* We know q has a non white space character so this is OK */
- for(r = q + strlen(q) - 1; isspace((unsigned char)*r); r--)
- *r = 0;
- }
- if(retcode != 200)
- {
- OCSPerr(OCSP_F_PARSE_HTTP_LINE1, OCSP_R_SERVER_RESPONSE_ERROR);
- if(!*q)
- ERR_add_error_data(2, "Code=", p);
- else
- ERR_add_error_data(4, "Code=", p, ",Reason=", q);
- return 0;
- }
-
-
- return 1;
-
- }
+{
+ int retcode;
+ char *p, *q, *r;
+ /* Skip to first white space (passed protocol info) */
+
+ for (p = line; *p && !ossl_isspace(*p); p++)
+ continue;
+ if (!*p) {
+ OCSPerr(OCSP_F_PARSE_HTTP_LINE1, OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
+ return 0;
+ }
+
+ /* Skip past white space to start of response code */
+ while (*p && ossl_isspace(*p))
+ p++;
+
+ if (!*p) {
+ OCSPerr(OCSP_F_PARSE_HTTP_LINE1, OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
+ return 0;
+ }
+
+ /* Find end of response code: first whitespace after start of code */
+ for (q = p; *q && !ossl_isspace(*q); q++)
+ continue;
+
+ if (!*q) {
+ OCSPerr(OCSP_F_PARSE_HTTP_LINE1, OCSP_R_SERVER_RESPONSE_PARSE_ERROR);
+ return 0;
+ }
+
+ /* Set end of response code and start of message */
+ *q++ = 0;
+
+ /* Attempt to parse numeric code */
+ retcode = strtoul(p, &r, 10);
+
+ if (*r)
+ return 0;
+
+ /* Skip over any leading white space in message */
+ while (*q && ossl_isspace(*q))
+ q++;
+
+ if (*q) {
+ /*
+ * Finally zap any trailing white space in message (include CRLF)
+ */
+
+ /* We know q has a non white space character so this is OK */
+ for (r = q + strlen(q) - 1; ossl_isspace(*r); r--)
+ *r = 0;
+ }
+ if (retcode != 200) {
+ OCSPerr(OCSP_F_PARSE_HTTP_LINE1, OCSP_R_SERVER_RESPONSE_ERROR);
+ if (!*q)
+ ERR_add_error_data(2, "Code=", p);
+ else
+ ERR_add_error_data(4, "Code=", p, ",Reason=", q);
+ return 0;
+ }
+
+ return 1;
+
+}
int OCSP_REQ_CTX_nbio(OCSP_REQ_CTX *rctx)
- {
- int i, n;
- const unsigned char *p;
- next_io:
- if (!(rctx->state & OHS_NOREAD))
- {
- n = BIO_read(rctx->io, rctx->iobuf, rctx->iobuflen);
-
- if (n <= 0)
- {
- if (BIO_should_retry(rctx->io))
- return -1;
- return 0;
- }
-
- /* Write data to memory BIO */
-
- if (BIO_write(rctx->mem, rctx->iobuf, n) != n)
- return 0;
- }
-
- switch(rctx->state)
- {
- case OHS_HTTP_HEADER:
- /* Last operation was adding headers: need a final \r\n */
- if (BIO_write(rctx->mem, "\r\n", 2) != 2)
- {
- rctx->state = OHS_ERROR;
- return 0;
- }
- rctx->state = OHS_ASN1_WRITE_INIT;
-
- case OHS_ASN1_WRITE_INIT:
- rctx->asn1_len = BIO_get_mem_data(rctx->mem, NULL);
- rctx->state = OHS_ASN1_WRITE;
-
- case OHS_ASN1_WRITE:
- n = BIO_get_mem_data(rctx->mem, &p);
-
- i = BIO_write(rctx->io,
- p + (n - rctx->asn1_len), rctx->asn1_len);
-
- if (i <= 0)
- {
- if (BIO_should_retry(rctx->io))
- return -1;
- rctx->state = OHS_ERROR;
- return 0;
- }
-
- rctx->asn1_len -= i;
-
- if (rctx->asn1_len > 0)
- goto next_io;
-
- rctx->state = OHS_ASN1_FLUSH;
-
- (void)BIO_reset(rctx->mem);
-
- case OHS_ASN1_FLUSH:
-
- i = BIO_flush(rctx->io);
-
- if (i > 0)
- {
- rctx->state = OHS_FIRSTLINE;
- goto next_io;
- }
-
- if (BIO_should_retry(rctx->io))
- return -1;
-
- rctx->state = OHS_ERROR;
- return 0;
-
- case OHS_ERROR:
- return 0;
-
- case OHS_FIRSTLINE:
- case OHS_HEADERS:
-
- /* Attempt to read a line in */
-
- next_line:
- /* Due to &%^*$" memory BIO behaviour with BIO_gets we
- * have to check there's a complete line in there before
- * calling BIO_gets or we'll just get a partial read.
- */
- n = BIO_get_mem_data(rctx->mem, &p);
- if ((n <= 0) || !memchr(p, '\n', n))
- {
- if (n >= rctx->iobuflen)
- {
- rctx->state = OHS_ERROR;
- return 0;
- }
- goto next_io;
- }
- n = BIO_gets(rctx->mem, (char *)rctx->iobuf, rctx->iobuflen);
-
- if (n <= 0)
- {
- if (BIO_should_retry(rctx->mem))
- goto next_io;
- rctx->state = OHS_ERROR;
- return 0;
- }
-
- /* Don't allow excessive lines */
- if (n == rctx->iobuflen)
- {
- rctx->state = OHS_ERROR;
- return 0;
- }
-
- /* First line */
- if (rctx->state == OHS_FIRSTLINE)
- {
- if (parse_http_line1((char *)rctx->iobuf))
- {
- rctx->state = OHS_HEADERS;
- goto next_line;
- }
- else
- {
- rctx->state = OHS_ERROR;
- return 0;
- }
- }
- else
- {
- /* Look for blank line: end of headers */
- for (p = rctx->iobuf; *p; p++)
- {
- if ((*p != '\r') && (*p != '\n'))
- break;
- }
- if (*p)
- goto next_line;
-
- rctx->state = OHS_ASN1_HEADER;
-
- }
-
- /* Fall thru */
-
-
- case OHS_ASN1_HEADER:
- /* Now reading ASN1 header: can read at least 2 bytes which
- * is enough for ASN1 SEQUENCE header and either length field
- * or at least the length of the length field.
- */
- n = BIO_get_mem_data(rctx->mem, &p);
- if (n < 2)
- goto next_io;
-
- /* Check it is an ASN1 SEQUENCE */
- if (*p++ != (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED))
- {
- rctx->state = OHS_ERROR;
- return 0;
- }
-
- /* Check out length field */
- if (*p & 0x80)
- {
- /* If MSB set on initial length octet we can now
- * always read 6 octets: make sure we have them.
- */
- if (n < 6)
- goto next_io;
- n = *p & 0x7F;
- /* Not NDEF or excessive length */
- if (!n || (n > 4))
- {
- rctx->state = OHS_ERROR;
- return 0;
- }
- p++;
- rctx->asn1_len = 0;
- for (i = 0; i < n; i++)
- {
- rctx->asn1_len <<= 8;
- rctx->asn1_len |= *p++;
- }
-
- if (rctx->asn1_len > rctx->max_resp_len)
- {
- rctx->state = OHS_ERROR;
- return 0;
- }
-
- rctx->asn1_len += n + 2;
- }
- else
- rctx->asn1_len = *p + 2;
-
- rctx->state = OHS_ASN1_CONTENT;
-
- /* Fall thru */
-
- case OHS_ASN1_CONTENT:
- n = BIO_get_mem_data(rctx->mem, NULL);
- if (n < (int)rctx->asn1_len)
- goto next_io;
-
- rctx->state = OHS_DONE;
- return 1;
-
- break;
-
- case OHS_DONE:
- return 1;
-
- }
-
- return 0;
-
- }
+{
+ int i, n;
+ const unsigned char *p;
+ next_io:
+ if (!(rctx->state & OHS_NOREAD)) {
+ n = BIO_read(rctx->io, rctx->iobuf, rctx->iobuflen);
+
+ if (n <= 0) {
+ if (BIO_should_retry(rctx->io))
+ return -1;
+ return 0;
+ }
+
+ /* Write data to memory BIO */
+
+ if (BIO_write(rctx->mem, rctx->iobuf, n) != n)
+ return 0;
+ }
+
+ switch (rctx->state) {
+ case OHS_HTTP_HEADER:
+ /* Last operation was adding headers: need a final \r\n */
+ if (BIO_write(rctx->mem, "\r\n", 2) != 2) {
+ rctx->state = OHS_ERROR;
+ return 0;
+ }
+ rctx->state = OHS_ASN1_WRITE_INIT;
+
+ /* fall thru */
+ case OHS_ASN1_WRITE_INIT:
+ rctx->asn1_len = BIO_get_mem_data(rctx->mem, NULL);
+ rctx->state = OHS_ASN1_WRITE;
+
+ /* fall thru */
+ case OHS_ASN1_WRITE:
+ n = BIO_get_mem_data(rctx->mem, &p);
+
+ i = BIO_write(rctx->io, p + (n - rctx->asn1_len), rctx->asn1_len);
+
+ if (i <= 0) {
+ if (BIO_should_retry(rctx->io))
+ return -1;
+ rctx->state = OHS_ERROR;
+ return 0;
+ }
+
+ rctx->asn1_len -= i;
+
+ if (rctx->asn1_len > 0)
+ goto next_io;
+
+ rctx->state = OHS_ASN1_FLUSH;
+
+ (void)BIO_reset(rctx->mem);
+
+ /* fall thru */
+ case OHS_ASN1_FLUSH:
+
+ i = BIO_flush(rctx->io);
+
+ if (i > 0) {
+ rctx->state = OHS_FIRSTLINE;
+ goto next_io;
+ }
+
+ if (BIO_should_retry(rctx->io))
+ return -1;
+
+ rctx->state = OHS_ERROR;
+ return 0;
+
+ case OHS_ERROR:
+ return 0;
+
+ case OHS_FIRSTLINE:
+ case OHS_HEADERS:
+
+ /* Attempt to read a line in */
+
+ next_line:
+ /*
+ * Due to &%^*$" memory BIO behaviour with BIO_gets we have to check
+ * there's a complete line in there before calling BIO_gets or we'll
+ * just get a partial read.
+ */
+ n = BIO_get_mem_data(rctx->mem, &p);
+ if ((n <= 0) || !memchr(p, '\n', n)) {
+ if (n >= rctx->iobuflen) {
+ rctx->state = OHS_ERROR;
+ return 0;
+ }
+ goto next_io;
+ }
+ n = BIO_gets(rctx->mem, (char *)rctx->iobuf, rctx->iobuflen);
+
+ if (n <= 0) {
+ if (BIO_should_retry(rctx->mem))
+ goto next_io;
+ rctx->state = OHS_ERROR;
+ return 0;
+ }
+
+ /* Don't allow excessive lines */
+ if (n == rctx->iobuflen) {
+ rctx->state = OHS_ERROR;
+ return 0;
+ }
+
+ /* First line */
+ if (rctx->state == OHS_FIRSTLINE) {
+ if (parse_http_line1((char *)rctx->iobuf)) {
+ rctx->state = OHS_HEADERS;
+ goto next_line;
+ } else {
+ rctx->state = OHS_ERROR;
+ return 0;
+ }
+ } else {
+ /* Look for blank line: end of headers */
+ for (p = rctx->iobuf; *p; p++) {
+ if ((*p != '\r') && (*p != '\n'))
+ break;
+ }
+ if (*p)
+ goto next_line;
+
+ rctx->state = OHS_ASN1_HEADER;
+
+ }
+
+ /* Fall thru */
+
+ case OHS_ASN1_HEADER:
+ /*
+ * Now reading ASN1 header: can read at least 2 bytes which is enough
+ * for ASN1 SEQUENCE header and either length field or at least the
+ * length of the length field.
+ */
+ n = BIO_get_mem_data(rctx->mem, &p);
+ if (n < 2)
+ goto next_io;
+
+ /* Check it is an ASN1 SEQUENCE */
+ if (*p++ != (V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED)) {
+ rctx->state = OHS_ERROR;
+ return 0;
+ }
+
+ /* Check out length field */
+ if (*p & 0x80) {
+ /*
+ * If MSB set on initial length octet we can now always read 6
+ * octets: make sure we have them.
+ */
+ if (n < 6)
+ goto next_io;
+ n = *p & 0x7F;
+ /* Not NDEF or excessive length */
+ if (!n || (n > 4)) {
+ rctx->state = OHS_ERROR;
+ return 0;
+ }
+ p++;
+ rctx->asn1_len = 0;
+ for (i = 0; i < n; i++) {
+ rctx->asn1_len <<= 8;
+ rctx->asn1_len |= *p++;
+ }
+
+ if (rctx->asn1_len > rctx->max_resp_len) {
+ rctx->state = OHS_ERROR;
+ return 0;
+ }
+
+ rctx->asn1_len += n + 2;
+ } else
+ rctx->asn1_len = *p + 2;
+
+ rctx->state = OHS_ASN1_CONTENT;
+
+ /* Fall thru */
+
+ case OHS_ASN1_CONTENT:
+ n = BIO_get_mem_data(rctx->mem, NULL);
+ if (n < (int)rctx->asn1_len)
+ goto next_io;
+
+ rctx->state = OHS_DONE;
+ return 1;
+
+ case OHS_DONE:
+ return 1;
+
+ }
+
+ return 0;
+
+}
int OCSP_sendreq_nbio(OCSP_RESPONSE **presp, OCSP_REQ_CTX *rctx)
- {
- return OCSP_REQ_CTX_nbio_d2i(rctx,
- (ASN1_VALUE **)presp, ASN1_ITEM_rptr(OCSP_RESPONSE));
- }
+{
+ return OCSP_REQ_CTX_nbio_d2i(rctx,
+ (ASN1_VALUE **)presp,
+ ASN1_ITEM_rptr(OCSP_RESPONSE));
+}
/* Blocking OCSP request handler: now a special case of non-blocking I/O */
OCSP_RESPONSE *OCSP_sendreq_bio(BIO *b, const char *path, OCSP_REQUEST *req)
- {
- OCSP_RESPONSE *resp = NULL;
- OCSP_REQ_CTX *ctx;
- int rv;
+{
+ OCSP_RESPONSE *resp = NULL;
+ OCSP_REQ_CTX *ctx;
+ int rv;
- ctx = OCSP_sendreq_new(b, path, req, -1);
+ ctx = OCSP_sendreq_new(b, path, req, -1);
- if (!ctx)
- return NULL;
+ if (ctx == NULL)
+ return NULL;
- do
- {
- rv = OCSP_sendreq_nbio(&resp, ctx);
- } while ((rv == -1) && BIO_should_retry(b));
+ do {
+ rv = OCSP_sendreq_nbio(&resp, ctx);
+ } while ((rv == -1) && BIO_should_retry(b));
- OCSP_REQ_CTX_free(ctx);
+ OCSP_REQ_CTX_free(ctx);
- if (rv)
- return resp;
+ if (rv)
+ return resp;
- return NULL;
- }
+ return NULL;
+}
projects / openssl.git / blobdiff