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Diffstat (limited to 'openssl/crypto/ocsp/ocsp_ht.c')
-rw-r--r--openssl/crypto/ocsp/ocsp_ht.c504
1 files changed, 504 insertions, 0 deletions
diff --git a/openssl/crypto/ocsp/ocsp_ht.c b/openssl/crypto/ocsp/ocsp_ht.c
new file mode 100644
index 00000000..af5fc166
--- /dev/null
+++ b/openssl/crypto/ocsp/ocsp_ht.c
@@ -0,0 +1,504 @@
+/* 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).
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include "e_os.h"
+#include <openssl/asn1.h>
+#include <openssl/ocsp.h>
+#include <openssl/err.h>
+#include <openssl/buffer.h>
+#ifdef OPENSSL_SYS_SUNOS
+#define strtoul (unsigned long)strtol
+#endif /* OPENSSL_SYS_SUNOS */
+
+/* Stateful OCSP request code, supporting non-blocking I/O */
+
+/* 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 */
+ };
+
+#define OCSP_MAX_REQUEST_LENGTH (100 * 1024)
+#define OCSP_MAX_LINE_LEN 4096;
+
+/* OCSP states */
+
+/* If set no reading should be performed */
+#define OHS_NOREAD 0x1000
+/* Error condition */
+#define OHS_ERROR (0 | OHS_NOREAD)
+/* First line being read */
+#define OHS_FIRSTLINE 1
+/* MIME headers being read */
+#define OHS_HEADERS 2
+/* OCSP initial header (tag + length) being read */
+#define OHS_ASN1_HEADER 3
+/* OCSP content octets being read */
+#define OHS_ASN1_CONTENT 4
+/* Request being sent */
+#define OHS_ASN1_WRITE (6 | OHS_NOREAD)
+/* Request being flushed */
+#define OHS_ASN1_FLUSH (7 | OHS_NOREAD)
+/* Completed */
+#define OHS_DONE (8 | OHS_NOREAD)
+
+
+static int parse_http_line1(char *line);
+
+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);
+ }
+
+int OCSP_REQ_CTX_set1_req(OCSP_REQ_CTX *rctx, OCSP_REQUEST *req)
+ {
+ static const char req_hdr[] =
+ "Content-Type: application/ocsp-request\r\n"
+ "Content-Length: %d\r\n\r\n";
+ if (BIO_printf(rctx->mem, req_hdr, i2d_OCSP_REQUEST(req, NULL)) <= 0)
+ return 0;
+ if (i2d_OCSP_REQUEST_bio(rctx->mem, req) <= 0)
+ return 0;
+ rctx->state = OHS_ASN1_WRITE;
+ rctx->asn1_len = BIO_get_mem_data(rctx->mem, NULL);
+ return 1;
+ }
+
+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;
+ return 1;
+ }
+
+OCSP_REQ_CTX *OCSP_sendreq_new(BIO *io, char *path, OCSP_REQUEST *req,
+ int maxline)
+ {
+ static const char post_hdr[] = "POST %s HTTP/1.0\r\n";
+
+ OCSP_REQ_CTX *rctx;
+ rctx = OPENSSL_malloc(sizeof(OCSP_REQ_CTX));
+ rctx->state = OHS_ERROR;
+ 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)
+ return 0;
+ if (!path)
+ path = "/";
+
+ if (BIO_printf(rctx->mem, post_hdr, path) <= 0)
+ return 0;
+
+ if (req && !OCSP_REQ_CTX_set1_req(rctx, req))
+ return 0;
+
+ return rctx;
+ }
+
+/* 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 OCSP_sendreq_nbio(OCSP_RESPONSE **presp, 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_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 > OCSP_MAX_REQUEST_LENGTH)
+ {
+ 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, &p);
+ if (n < (int)rctx->asn1_len)
+ goto next_io;
+
+
+ *presp = d2i_OCSP_RESPONSE(NULL, &p, rctx->asn1_len);
+ if (*presp)
+ {
+ rctx->state = OHS_DONE;
+ return 1;
+ }
+
+ rctx->state = OHS_ERROR;
+ return 0;
+
+ break;
+
+ case OHS_DONE:
+ return 1;
+
+ }
+
+
+
+ return 0;
+
+
+ }
+
+/* Blocking OCSP request handler: now a special case of non-blocking I/O */
+
+OCSP_RESPONSE *OCSP_sendreq_bio(BIO *b, char *path, OCSP_REQUEST *req)
+ {
+ OCSP_RESPONSE *resp = NULL;
+ OCSP_REQ_CTX *ctx;
+ int rv;
+
+ ctx = OCSP_sendreq_new(b, path, req, -1);
+
+ do
+ {
+ rv = OCSP_sendreq_nbio(&resp, ctx);
+ } while ((rv == -1) && BIO_should_retry(b));
+
+ OCSP_REQ_CTX_free(ctx);
+
+ if (rv)
+ return resp;
+
+ return NULL;
+ }
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