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-rw-r--r--src/decrepit/bio/base64_bio.c536
1 files changed, 0 insertions, 536 deletions
diff --git a/src/decrepit/bio/base64_bio.c b/src/decrepit/bio/base64_bio.c
deleted file mode 100644
index 2056138..0000000
--- a/src/decrepit/bio/base64_bio.c
+++ /dev/null
@@ -1,536 +0,0 @@
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * 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 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 acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS 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 AUTHOR OR 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.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.] */
-
-#include <assert.h>
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-
-#include <openssl/base64.h>
-#include <openssl/bio.h>
-#include <openssl/buffer.h>
-#include <openssl/evp.h>
-#include <openssl/mem.h>
-
-
-#define B64_BLOCK_SIZE 1024
-#define B64_BLOCK_SIZE2 768
-#define B64_NONE 0
-#define B64_ENCODE 1
-#define B64_DECODE 2
-#define EVP_ENCODE_LENGTH(l) (((l+2)/3*4)+(l/48+1)*2+80)
-
-typedef struct b64_struct {
- int buf_len;
- int buf_off;
- int tmp_len; /* used to find the start when decoding */
- int tmp_nl; /* If true, scan until '\n' */
- int encode;
- int start; /* have we started decoding yet? */
- int cont; /* <= 0 when finished */
- EVP_ENCODE_CTX base64;
- char buf[EVP_ENCODE_LENGTH(B64_BLOCK_SIZE) + 10];
- char tmp[B64_BLOCK_SIZE];
-} BIO_B64_CTX;
-
-static int b64_new(BIO *bio) {
- BIO_B64_CTX *ctx;
-
- ctx = OPENSSL_malloc(sizeof(*ctx));
- if (ctx == NULL) {
- return 0;
- }
-
- memset(ctx, 0, sizeof(*ctx));
-
- ctx->cont = 1;
- ctx->start = 1;
-
- bio->init = 1;
- bio->ptr = (char *)ctx;
- return 1;
-}
-
-static int b64_free(BIO *bio) {
- if (bio == NULL) {
- return 0;
- }
- OPENSSL_free(bio->ptr);
- bio->ptr = NULL;
- bio->init = 0;
- bio->flags = 0;
- return 1;
-}
-
-static int b64_read(BIO *b, char *out, int outl) {
- int ret = 0, i, ii, j, k, x, n, num, ret_code = 0;
- BIO_B64_CTX *ctx;
- uint8_t *p, *q;
-
- if (out == NULL) {
- return 0;
- }
- ctx = (BIO_B64_CTX *) b->ptr;
-
- if (ctx == NULL || b->next_bio == NULL) {
- return 0;
- }
-
- BIO_clear_retry_flags(b);
-
- if (ctx->encode != B64_DECODE) {
- ctx->encode = B64_DECODE;
- ctx->buf_len = 0;
- ctx->buf_off = 0;
- ctx->tmp_len = 0;
- EVP_DecodeInit(&ctx->base64);
- }
-
- /* First check if there are bytes decoded/encoded */
- if (ctx->buf_len > 0) {
- assert(ctx->buf_len >= ctx->buf_off);
- i = ctx->buf_len - ctx->buf_off;
- if (i > outl) {
- i = outl;
- }
- assert(ctx->buf_off + i < (int)sizeof(ctx->buf));
- memcpy(out, &ctx->buf[ctx->buf_off], i);
- ret = i;
- out += i;
- outl -= i;
- ctx->buf_off += i;
- if (ctx->buf_len == ctx->buf_off) {
- ctx->buf_len = 0;
- ctx->buf_off = 0;
- }
- }
-
- /* At this point, we have room of outl bytes and an empty buffer, so we
- * should read in some more. */
-
- ret_code = 0;
- while (outl > 0) {
- if (ctx->cont <= 0) {
- break;
- }
-
- i = BIO_read(b->next_bio, &(ctx->tmp[ctx->tmp_len]),
- B64_BLOCK_SIZE - ctx->tmp_len);
-
- if (i <= 0) {
- ret_code = i;
-
- /* Should we continue next time we are called? */
- if (!BIO_should_retry(b->next_bio)) {
- ctx->cont = i;
- /* If buffer empty break */
- if (ctx->tmp_len == 0) {
- break;
- } else {
- /* Fall through and process what we have */
- i = 0;
- }
- } else {
- /* else we retry and add more data to buffer */
- break;
- }
- }
- i += ctx->tmp_len;
- ctx->tmp_len = i;
-
- /* We need to scan, a line at a time until we have a valid line if we are
- * starting. */
- if (ctx->start && (BIO_test_flags(b, BIO_FLAGS_BASE64_NO_NL))) {
- /* ctx->start = 1; */
- ctx->tmp_len = 0;
- } else if (ctx->start) {
- q = p = (uint8_t *)ctx->tmp;
- num = 0;
- for (j = 0; j < i; j++) {
- if (*(q++) != '\n') {
- continue;
- }
-
- /* due to a previous very long line, we need to keep on scanning for a
- * '\n' before we even start looking for base64 encoded stuff. */
- if (ctx->tmp_nl) {
- p = q;
- ctx->tmp_nl = 0;
- continue;
- }
-
- k = EVP_DecodeUpdate(&(ctx->base64), (uint8_t *)ctx->buf, &num, p,
- q - p);
-
- if (k <= 0 && num == 0 && ctx->start) {
- EVP_DecodeInit(&ctx->base64);
- } else {
- if (p != (uint8_t *)&(ctx->tmp[0])) {
- i -= (p - (uint8_t *)&(ctx->tmp[0]));
- for (x = 0; x < i; x++) {
- ctx->tmp[x] = p[x];
- }
- }
- EVP_DecodeInit(&ctx->base64);
- ctx->start = 0;
- break;
- }
- p = q;
- }
-
- /* we fell off the end without starting */
- if (j == i && num == 0) {
- /* Is this is one long chunk?, if so, keep on reading until a new
- * line. */
- if (p == (uint8_t *)&(ctx->tmp[0])) {
- /* Check buffer full */
- if (i == B64_BLOCK_SIZE) {
- ctx->tmp_nl = 1;
- ctx->tmp_len = 0;
- }
- } else if (p != q) { /* finished on a '\n' */
- n = q - p;
- for (ii = 0; ii < n; ii++) {
- ctx->tmp[ii] = p[ii];
- }
- ctx->tmp_len = n;
- }
- /* else finished on a '\n' */
- continue;
- } else {
- ctx->tmp_len = 0;
- }
- } else if (i < B64_BLOCK_SIZE && ctx->cont > 0) {
- /* If buffer isn't full and we can retry then restart to read in more
- * data. */
- continue;
- }
-
- if (BIO_test_flags(b, BIO_FLAGS_BASE64_NO_NL)) {
- int z, jj;
-
- jj = i & ~3; /* process per 4 */
- z = EVP_DecodeBlock((uint8_t *)ctx->buf, (uint8_t *)ctx->tmp, jj);
- if (jj > 2) {
- if (ctx->tmp[jj - 1] == '=') {
- z--;
- if (ctx->tmp[jj - 2] == '=') {
- z--;
- }
- }
- }
- /* z is now number of output bytes and jj is the number consumed. */
- if (jj != i) {
- memmove(ctx->tmp, &ctx->tmp[jj], i - jj);
- ctx->tmp_len = i - jj;
- }
- ctx->buf_len = 0;
- if (z > 0) {
- ctx->buf_len = z;
- }
- i = z;
- } else {
- i = EVP_DecodeUpdate(&(ctx->base64), (uint8_t *)ctx->buf,
- &ctx->buf_len, (uint8_t *)ctx->tmp, i);
- ctx->tmp_len = 0;
- }
- ctx->buf_off = 0;
- if (i < 0) {
- ret_code = 0;
- ctx->buf_len = 0;
- break;
- }
-
- if (ctx->buf_len <= outl) {
- i = ctx->buf_len;
- } else {
- i = outl;
- }
-
- memcpy(out, ctx->buf, i);
- ret += i;
- ctx->buf_off = i;
- if (ctx->buf_off == ctx->buf_len) {
- ctx->buf_len = 0;
- ctx->buf_off = 0;
- }
- outl -= i;
- out += i;
- }
-
- BIO_copy_next_retry(b);
- return ret == 0 ? ret_code : ret;
-}
-
-static int b64_write(BIO *b, const char *in, int inl) {
- int ret = 0, n, i;
- BIO_B64_CTX *ctx;
-
- ctx = (BIO_B64_CTX *)b->ptr;
- BIO_clear_retry_flags(b);
-
- if (ctx->encode != B64_ENCODE) {
- ctx->encode = B64_ENCODE;
- ctx->buf_len = 0;
- ctx->buf_off = 0;
- ctx->tmp_len = 0;
- EVP_EncodeInit(&(ctx->base64));
- }
-
- assert(ctx->buf_off < (int)sizeof(ctx->buf));
- assert(ctx->buf_len <= (int)sizeof(ctx->buf));
- assert(ctx->buf_len >= ctx->buf_off);
-
- n = ctx->buf_len - ctx->buf_off;
- while (n > 0) {
- i = BIO_write(b->next_bio, &(ctx->buf[ctx->buf_off]), n);
- if (i <= 0) {
- BIO_copy_next_retry(b);
- return i;
- }
- assert(i <= n);
- ctx->buf_off += i;
- assert(ctx->buf_off <= (int)sizeof(ctx->buf));
- assert(ctx->buf_len >= ctx->buf_off);
- n -= i;
- }
-
- /* at this point all pending data has been written. */
- ctx->buf_off = 0;
- ctx->buf_len = 0;
-
- if (in == NULL || inl <= 0) {
- return 0;
- }
-
- while (inl > 0) {
- n = (inl > B64_BLOCK_SIZE) ? B64_BLOCK_SIZE : inl;
-
- if (BIO_test_flags(b, BIO_FLAGS_BASE64_NO_NL)) {
- if (ctx->tmp_len > 0) {
- assert(ctx->tmp_len <= 3);
- n = 3 - ctx->tmp_len;
- /* There's a theoretical possibility of this. */
- if (n > inl) {
- n = inl;
- }
- memcpy(&(ctx->tmp[ctx->tmp_len]), in, n);
- ctx->tmp_len += n;
- ret += n;
- if (ctx->tmp_len < 3) {
- break;
- }
- ctx->buf_len = EVP_EncodeBlock((uint8_t *)ctx->buf, (uint8_t *)ctx->tmp,
- ctx->tmp_len);
- assert(ctx->buf_len <= (int)sizeof(ctx->buf));
- assert(ctx->buf_len >= ctx->buf_off);
-
- /* Since we're now done using the temporary buffer, the length should
- * be zeroed. */
- ctx->tmp_len = 0;
- } else {
- if (n < 3) {
- memcpy(ctx->tmp, in, n);
- ctx->tmp_len = n;
- ret += n;
- break;
- }
- n -= n % 3;
- ctx->buf_len =
- EVP_EncodeBlock((uint8_t *)ctx->buf, (const uint8_t *)in, n);
- assert(ctx->buf_len <= (int)sizeof(ctx->buf));
- assert(ctx->buf_len >= ctx->buf_off);
- ret += n;
- }
- } else {
- EVP_EncodeUpdate(&(ctx->base64), (uint8_t *)ctx->buf, &ctx->buf_len,
- (uint8_t *)in, n);
- assert(ctx->buf_len <= (int)sizeof(ctx->buf));
- assert(ctx->buf_len >= ctx->buf_off);
- ret += n;
- }
- inl -= n;
- in += n;
-
- ctx->buf_off = 0;
- n = ctx->buf_len;
-
- while (n > 0) {
- i = BIO_write(b->next_bio, &(ctx->buf[ctx->buf_off]), n);
- if (i <= 0) {
- BIO_copy_next_retry(b);
- return ret == 0 ? i : ret;
- }
- assert(i <= n);
- n -= i;
- ctx->buf_off += i;
- assert(ctx->buf_off <= (int)sizeof(ctx->buf));
- assert(ctx->buf_len >= ctx->buf_off);
- }
- ctx->buf_len = 0;
- ctx->buf_off = 0;
- }
- return ret;
-}
-
-static long b64_ctrl(BIO *b, int cmd, long num, void *ptr) {
- BIO_B64_CTX *ctx;
- long ret = 1;
- int i;
-
- ctx = (BIO_B64_CTX *)b->ptr;
-
- switch (cmd) {
- case BIO_CTRL_RESET:
- ctx->cont = 1;
- ctx->start = 1;
- ctx->encode = B64_NONE;
- ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
- break;
-
- case BIO_CTRL_EOF: /* More to read */
- if (ctx->cont <= 0) {
- ret = 1;
- } else {
- ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
- }
- break;
-
- case BIO_CTRL_WPENDING: /* More to write in buffer */
- assert(ctx->buf_len >= ctx->buf_off);
- ret = ctx->buf_len - ctx->buf_off;
- if ((ret == 0) && (ctx->encode != B64_NONE) && (ctx->base64.num != 0)) {
- ret = 1;
- } else if (ret <= 0) {
- ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
- }
- break;
-
- case BIO_CTRL_PENDING: /* More to read in buffer */
- assert(ctx->buf_len >= ctx->buf_off);
- ret = ctx->buf_len - ctx->buf_off;
- if (ret <= 0) {
- ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
- }
- break;
-
- case BIO_CTRL_FLUSH:
- /* do a final write */
- again:
- while (ctx->buf_len != ctx->buf_off) {
- i = b64_write(b, NULL, 0);
- if (i < 0) {
- return i;
- }
- }
- if (BIO_test_flags(b, BIO_FLAGS_BASE64_NO_NL)) {
- if (ctx->tmp_len != 0) {
- ctx->buf_len = EVP_EncodeBlock((uint8_t *)ctx->buf,
- (uint8_t *)ctx->tmp, ctx->tmp_len);
- ctx->buf_off = 0;
- ctx->tmp_len = 0;
- goto again;
- }
- } else if (ctx->encode != B64_NONE && ctx->base64.num != 0) {
- ctx->buf_off = 0;
- EVP_EncodeFinal(&(ctx->base64), (uint8_t *)ctx->buf, &(ctx->buf_len));
- /* push out the bytes */
- goto again;
- }
- /* Finally flush the underlying BIO */
- ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
- break;
-
- case BIO_C_DO_STATE_MACHINE:
- BIO_clear_retry_flags(b);
- ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
- BIO_copy_next_retry(b);
- break;
-
- case BIO_CTRL_INFO:
- case BIO_CTRL_GET:
- case BIO_CTRL_SET:
- default:
- ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
- break;
- }
- return ret;
-}
-
-static long b64_callback_ctrl(BIO *b, int cmd, bio_info_cb fp) {
- long ret = 1;
-
- if (b->next_bio == NULL) {
- return 0;
- }
- switch (cmd) {
- default:
- ret = BIO_callback_ctrl(b->next_bio, cmd, fp);
- break;
- }
- return ret;
-}
-
-static int b64_puts(BIO *b, const char *str) {
- return b64_write(b, str, strlen(str));
-}
-
-static const BIO_METHOD b64_method = {
- BIO_TYPE_BASE64, "base64 encoding", b64_write, b64_read, b64_puts,
- NULL /* gets */, b64_ctrl, b64_new, b64_free, b64_callback_ctrl,
-};
-
-const BIO_METHOD *BIO_f_base64(void) { return &b64_method; }
generated by cgit v1.1 at 2024-12-22 09:53:13 +0000