summaryrefslogtreecommitdiff
path: root/openssl/crypto/asn1/bio_asn1.c
diff options
context:
space:
mode:
Diffstat (limited to 'openssl/crypto/asn1/bio_asn1.c')
-rw-r--r--openssl/crypto/asn1/bio_asn1.c495
1 files changed, 0 insertions, 495 deletions
diff --git a/openssl/crypto/asn1/bio_asn1.c b/openssl/crypto/asn1/bio_asn1.c
deleted file mode 100644
index dc7efd55..00000000
--- a/openssl/crypto/asn1/bio_asn1.c
+++ /dev/null
@@ -1,495 +0,0 @@
-/* bio_asn1.c */
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project.
- */
-/* ====================================================================
- * 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).
- *
- */
-
-/* Experimental ASN1 BIO. When written through the data is converted
- * to an ASN1 string type: default is OCTET STRING. Additional functions
- * can be provided to add prefix and suffix data.
- */
-
-#include <string.h>
-#include <openssl/bio.h>
-#include <openssl/asn1.h>
-
-/* Must be large enough for biggest tag+length */
-#define DEFAULT_ASN1_BUF_SIZE 20
-
-typedef enum
- {
- ASN1_STATE_START,
- ASN1_STATE_PRE_COPY,
- ASN1_STATE_HEADER,
- ASN1_STATE_HEADER_COPY,
- ASN1_STATE_DATA_COPY,
- ASN1_STATE_POST_COPY,
- ASN1_STATE_DONE
- } asn1_bio_state_t;
-
-typedef struct BIO_ASN1_EX_FUNCS_st
- {
- asn1_ps_func *ex_func;
- asn1_ps_func *ex_free_func;
- } BIO_ASN1_EX_FUNCS;
-
-typedef struct BIO_ASN1_BUF_CTX_t
- {
- /* Internal state */
- asn1_bio_state_t state;
- /* Internal buffer */
- unsigned char *buf;
- /* Size of buffer */
- int bufsize;
- /* Current position in buffer */
- int bufpos;
- /* Current buffer length */
- int buflen;
- /* Amount of data to copy */
- int copylen;
- /* Class and tag to use */
- int asn1_class, asn1_tag;
- asn1_ps_func *prefix, *prefix_free, *suffix, *suffix_free;
- /* Extra buffer for prefix and suffix data */
- unsigned char *ex_buf;
- int ex_len;
- int ex_pos;
- void *ex_arg;
- } BIO_ASN1_BUF_CTX;
-
-
-static int asn1_bio_write(BIO *h, const char *buf,int num);
-static int asn1_bio_read(BIO *h, char *buf, int size);
-static int asn1_bio_puts(BIO *h, const char *str);
-static int asn1_bio_gets(BIO *h, char *str, int size);
-static long asn1_bio_ctrl(BIO *h, int cmd, long arg1, void *arg2);
-static int asn1_bio_new(BIO *h);
-static int asn1_bio_free(BIO *data);
-static long asn1_bio_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp);
-
-static int asn1_bio_init(BIO_ASN1_BUF_CTX *ctx, int size);
-static int asn1_bio_flush_ex(BIO *b, BIO_ASN1_BUF_CTX *ctx,
- asn1_ps_func *cleanup, asn1_bio_state_t next);
-static int asn1_bio_setup_ex(BIO *b, BIO_ASN1_BUF_CTX *ctx,
- asn1_ps_func *setup,
- asn1_bio_state_t ex_state,
- asn1_bio_state_t other_state);
-
-static BIO_METHOD methods_asn1=
- {
- BIO_TYPE_ASN1,
- "asn1",
- asn1_bio_write,
- asn1_bio_read,
- asn1_bio_puts,
- asn1_bio_gets,
- asn1_bio_ctrl,
- asn1_bio_new,
- asn1_bio_free,
- asn1_bio_callback_ctrl,
- };
-
-BIO_METHOD *BIO_f_asn1(void)
- {
- return(&methods_asn1);
- }
-
-
-static int asn1_bio_new(BIO *b)
- {
- BIO_ASN1_BUF_CTX *ctx;
- ctx = OPENSSL_malloc(sizeof(BIO_ASN1_BUF_CTX));
- if (!ctx)
- return 0;
- if (!asn1_bio_init(ctx, DEFAULT_ASN1_BUF_SIZE))
- return 0;
- b->init = 1;
- b->ptr = (char *)ctx;
- b->flags = 0;
- return 1;
- }
-
-static int asn1_bio_init(BIO_ASN1_BUF_CTX *ctx, int size)
- {
- ctx->buf = OPENSSL_malloc(size);
- if (!ctx->buf)
- return 0;
- ctx->bufsize = size;
- ctx->bufpos = 0;
- ctx->buflen = 0;
- ctx->copylen = 0;
- ctx->asn1_class = V_ASN1_UNIVERSAL;
- ctx->asn1_tag = V_ASN1_OCTET_STRING;
- ctx->ex_buf = 0;
- ctx->ex_pos = 0;
- ctx->ex_len = 0;
- ctx->state = ASN1_STATE_START;
- return 1;
- }
-
-static int asn1_bio_free(BIO *b)
- {
- BIO_ASN1_BUF_CTX *ctx;
- ctx = (BIO_ASN1_BUF_CTX *) b->ptr;
- if (ctx == NULL)
- return 0;
- if (ctx->buf)
- OPENSSL_free(ctx->buf);
- OPENSSL_free(ctx);
- b->init = 0;
- b->ptr = NULL;
- b->flags = 0;
- return 1;
- }
-
-static int asn1_bio_write(BIO *b, const char *in , int inl)
- {
- BIO_ASN1_BUF_CTX *ctx;
- int wrmax, wrlen, ret;
- unsigned char *p;
- if (!in || (inl < 0) || (b->next_bio == NULL))
- return 0;
- ctx = (BIO_ASN1_BUF_CTX *) b->ptr;
- if (ctx == NULL)
- return 0;
-
- wrlen = 0;
- ret = -1;
-
- for(;;)
- {
- switch (ctx->state)
- {
-
- /* Setup prefix data, call it */
- case ASN1_STATE_START:
- if (!asn1_bio_setup_ex(b, ctx, ctx->prefix,
- ASN1_STATE_PRE_COPY, ASN1_STATE_HEADER))
- return 0;
- break;
-
- /* Copy any pre data first */
- case ASN1_STATE_PRE_COPY:
-
- ret = asn1_bio_flush_ex(b, ctx, ctx->prefix_free,
- ASN1_STATE_HEADER);
-
- if (ret <= 0)
- goto done;
-
- break;
-
- case ASN1_STATE_HEADER:
- ctx->buflen =
- ASN1_object_size(0, inl, ctx->asn1_tag) - inl;
- OPENSSL_assert(ctx->buflen <= ctx->bufsize);
- p = ctx->buf;
- ASN1_put_object(&p, 0, inl,
- ctx->asn1_tag, ctx->asn1_class);
- ctx->copylen = inl;
- ctx->state = ASN1_STATE_HEADER_COPY;
-
- break;
-
- case ASN1_STATE_HEADER_COPY:
- ret = BIO_write(b->next_bio,
- ctx->buf + ctx->bufpos, ctx->buflen);
- if (ret <= 0)
- goto done;
-
- ctx->buflen -= ret;
- if (ctx->buflen)
- ctx->bufpos += ret;
- else
- {
- ctx->bufpos = 0;
- ctx->state = ASN1_STATE_DATA_COPY;
- }
-
- break;
-
- case ASN1_STATE_DATA_COPY:
-
- if (inl > ctx->copylen)
- wrmax = ctx->copylen;
- else
- wrmax = inl;
- ret = BIO_write(b->next_bio, in, wrmax);
- if (ret <= 0)
- break;
- wrlen += ret;
- ctx->copylen -= ret;
- in += ret;
- inl -= ret;
-
- if (ctx->copylen == 0)
- ctx->state = ASN1_STATE_HEADER;
-
- if (inl == 0)
- goto done;
-
- break;
-
- default:
- BIO_clear_retry_flags(b);
- return 0;
-
- }
-
- }
-
- done:
- BIO_clear_retry_flags(b);
- BIO_copy_next_retry(b);
-
- return (wrlen > 0) ? wrlen : ret;
-
- }
-
-static int asn1_bio_flush_ex(BIO *b, BIO_ASN1_BUF_CTX *ctx,
- asn1_ps_func *cleanup, asn1_bio_state_t next)
- {
- int ret;
- if (ctx->ex_len <= 0)
- return 1;
- for(;;)
- {
- ret = BIO_write(b->next_bio, ctx->ex_buf + ctx->ex_pos,
- ctx->ex_len);
- if (ret <= 0)
- break;
- ctx->ex_len -= ret;
- if (ctx->ex_len > 0)
- ctx->ex_pos += ret;
- else
- {
- if(cleanup)
- cleanup(b, &ctx->ex_buf, &ctx->ex_len,
- &ctx->ex_arg);
- ctx->state = next;
- ctx->ex_pos = 0;
- break;
- }
- }
- return ret;
- }
-
-static int asn1_bio_setup_ex(BIO *b, BIO_ASN1_BUF_CTX *ctx,
- asn1_ps_func *setup,
- asn1_bio_state_t ex_state,
- asn1_bio_state_t other_state)
- {
- if (setup && !setup(b, &ctx->ex_buf, &ctx->ex_len, &ctx->ex_arg))
- {
- BIO_clear_retry_flags(b);
- return 0;
- }
- if (ctx->ex_len > 0)
- ctx->state = ex_state;
- else
- ctx->state = other_state;
- return 1;
- }
-
-static int asn1_bio_read(BIO *b, char *in , int inl)
- {
- if (!b->next_bio)
- return 0;
- return BIO_read(b->next_bio, in , inl);
- }
-
-static int asn1_bio_puts(BIO *b, const char *str)
- {
- return asn1_bio_write(b, str, strlen(str));
- }
-
-static int asn1_bio_gets(BIO *b, char *str, int size)
- {
- if (!b->next_bio)
- return 0;
- return BIO_gets(b->next_bio, str , size);
- }
-
-static long asn1_bio_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
- {
- if (b->next_bio == NULL) return(0);
- return BIO_callback_ctrl(b->next_bio,cmd,fp);
- }
-
-static long asn1_bio_ctrl(BIO *b, int cmd, long arg1, void *arg2)
- {
- BIO_ASN1_BUF_CTX *ctx;
- BIO_ASN1_EX_FUNCS *ex_func;
- long ret = 1;
- ctx = (BIO_ASN1_BUF_CTX *) b->ptr;
- if (ctx == NULL)
- return 0;
- switch(cmd)
- {
-
- case BIO_C_SET_PREFIX:
- ex_func = arg2;
- ctx->prefix = ex_func->ex_func;
- ctx->prefix_free = ex_func->ex_free_func;
- break;
-
- case BIO_C_GET_PREFIX:
- ex_func = arg2;
- ex_func->ex_func = ctx->prefix;
- ex_func->ex_free_func = ctx->prefix_free;
- break;
-
- case BIO_C_SET_SUFFIX:
- ex_func = arg2;
- ctx->suffix = ex_func->ex_func;
- ctx->suffix_free = ex_func->ex_free_func;
- break;
-
- case BIO_C_GET_SUFFIX:
- ex_func = arg2;
- ex_func->ex_func = ctx->suffix;
- ex_func->ex_free_func = ctx->suffix_free;
- break;
-
- case BIO_C_SET_EX_ARG:
- ctx->ex_arg = arg2;
- break;
-
- case BIO_C_GET_EX_ARG:
- *(void **)arg2 = ctx->ex_arg;
- break;
-
- case BIO_CTRL_FLUSH:
- if (!b->next_bio)
- return 0;
-
- /* Call post function if possible */
- if (ctx->state == ASN1_STATE_HEADER)
- {
- if (!asn1_bio_setup_ex(b, ctx, ctx->suffix,
- ASN1_STATE_POST_COPY, ASN1_STATE_DONE))
- return 0;
- }
-
- if (ctx->state == ASN1_STATE_POST_COPY)
- {
- ret = asn1_bio_flush_ex(b, ctx, ctx->suffix_free,
- ASN1_STATE_DONE);
- if (ret <= 0)
- return ret;
- }
-
- if (ctx->state == ASN1_STATE_DONE)
- return BIO_ctrl(b->next_bio, cmd, arg1, arg2);
- else
- {
- BIO_clear_retry_flags(b);
- return 0;
- }
- break;
-
-
- default:
- if (!b->next_bio)
- return 0;
- return BIO_ctrl(b->next_bio, cmd, arg1, arg2);
-
- }
-
- return ret;
- }
-
-static int asn1_bio_set_ex(BIO *b, int cmd,
- asn1_ps_func *ex_func, asn1_ps_func *ex_free_func)
- {
- BIO_ASN1_EX_FUNCS extmp;
- extmp.ex_func = ex_func;
- extmp.ex_free_func = ex_free_func;
- return BIO_ctrl(b, cmd, 0, &extmp);
- }
-
-static int asn1_bio_get_ex(BIO *b, int cmd,
- asn1_ps_func **ex_func, asn1_ps_func **ex_free_func)
- {
- BIO_ASN1_EX_FUNCS extmp;
- int ret;
- ret = BIO_ctrl(b, cmd, 0, &extmp);
- if (ret > 0)
- {
- *ex_func = extmp.ex_func;
- *ex_free_func = extmp.ex_free_func;
- }
- return ret;
- }
-
-int BIO_asn1_set_prefix(BIO *b, asn1_ps_func *prefix, asn1_ps_func *prefix_free)
- {
- return asn1_bio_set_ex(b, BIO_C_SET_PREFIX, prefix, prefix_free);
- }
-
-int BIO_asn1_get_prefix(BIO *b, asn1_ps_func **pprefix, asn1_ps_func **pprefix_free)
- {
- return asn1_bio_get_ex(b, BIO_C_GET_PREFIX, pprefix, pprefix_free);
- }
-
-int BIO_asn1_set_suffix(BIO *b, asn1_ps_func *suffix, asn1_ps_func *suffix_free)
- {
- return asn1_bio_set_ex(b, BIO_C_SET_SUFFIX, suffix, suffix_free);
- }
-
-int BIO_asn1_get_suffix(BIO *b, asn1_ps_func **psuffix, asn1_ps_func **psuffix_free)
- {
- return asn1_bio_get_ex(b, BIO_C_GET_SUFFIX, psuffix, psuffix_free);
- }
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 19:36:58 +0000