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-rw-r--r--trust/base64.c251
1 files changed, 0 insertions, 251 deletions
diff --git a/trust/base64.c b/trust/base64.c
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--- a/trust/base64.c
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@@ -1,251 +0,0 @@
-/*
- * Copyright (c) 1996, 1998 by Internet Software Consortium.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
- * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
- * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- */
-
-/*
- * Portions Copyright (c) 1995 by International Business Machines, Inc.
- *
- * International Business Machines, Inc. (hereinafter called IBM) grants
- * permission under its copyrights to use, copy, modify, and distribute this
- * Software with or without fee, provided that the above copyright notice and
- * all paragraphs of this notice appear in all copies, and that the name of IBM
- * not be used in connection with the marketing of any product incorporating
- * the Software or modifications thereof, without specific, written prior
- * permission.
- *
- * To the extent it has a right to do so, IBM grants an immunity from suit
- * under its patents, if any, for the use, sale or manufacture of products to
- * the extent that such products are used for performing Domain Name System
- * dynamic updates in TCP/IP networks by means of the Software. No immunity is
- * granted for any product per se or for any other function of any product.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
- * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
- * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
- * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
- */
-
-#include "config.h"
-
-#include "base64.h"
-
-#include <assert.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <string.h>
-
-static const char Base64[] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-
-static const char Pad64 = '=';
-
-/* skips all whitespace anywhere.
- converts characters, four at a time, starting at (or after)
- src from base - 64 numbers into three 8 bit bytes in the target area.
- it returns the number of data bytes stored at the target, or -1 on error.
- */
-
-int
-p11_b64_pton (const char *src,
- size_t length,
- unsigned char *target,
- size_t targsize)
-{
- int tarindex, state, ch;
- char *pos;
- const char *end;
-
- state = 0;
- tarindex = 0;
- end = src + length;
-
- /* We can't rely on the null terminator */
- #define next_char(src, end) \
- (((src) == (end)) ? '\0': *(src)++)
-
- while ((ch = next_char (src, end)) != '\0') {
- if (isspace ((unsigned char) ch)) /* Skip whitespace anywhere. */
- continue;
-
- if (ch == Pad64)
- break;
-
- pos = strchr (Base64, ch);
- if (pos == 0) /* A non-base64 character. */
- return (-1);
-
- switch (state) {
- case 0:
- if (target) {
- if ((size_t)tarindex >= targsize)
- return (-1);
- target[tarindex] = (pos - Base64) << 2;
- }
- state = 1;
- break;
- case 1:
- if (target) {
- if ((size_t) tarindex + 1 >= targsize)
- return (-1);
- target[tarindex] |= (pos - Base64) >> 4;
- target[tarindex + 1] = ((pos - Base64) & 0x0f)
- << 4;
- }
- tarindex++;
- state = 2;
- break;
- case 2:
- if (target) {
- if ((size_t) tarindex + 1 >= targsize)
- return (-1);
- target[tarindex] |= (pos - Base64) >> 2;
- target[tarindex + 1] = ((pos - Base64) & 0x03)
- << 6;
- }
- tarindex++;
- state = 3;
- break;
- case 3:
- if (target) {
- if ((size_t) tarindex >= targsize)
- return (-1);
- target[tarindex] |= (pos - Base64);
- }
- tarindex++;
- state = 0;
- break;
- default:
- abort();
- }
- }
-
- /*
- * We are done decoding Base-64 chars. Let's see if we ended
- * on a byte boundary, and/or with erroneous trailing characters.
- */
-
- if (ch == Pad64) { /* We got a pad char. */
- ch = next_char (src, end); /* Skip it, get next. */
- switch (state) {
- case 0: /* Invalid = in first position */
- case 1: /* Invalid = in second position */
- return (-1);
-
- case 2: /* Valid, means one byte of info */
- /* Skip any number of spaces. */
- for ((void) NULL; ch != '\0'; ch = next_char (src, end))
- if (!isspace((unsigned char) ch))
- break;
- /* Make sure there is another trailing = sign. */
- if (ch != Pad64)
- return (-1);
- ch = next_char (src, end); /* Skip the = */
- /* Fall through to "single trailing =" case. */
- /* FALLTHROUGH */
-
- case 3: /* Valid, means two bytes of info */
- /*
- * We know this char is an =. Is there anything but
- * whitespace after it?
- */
- for ((void)NULL; src != end; ch = next_char (src, end))
- if (!isspace((unsigned char) ch))
- return (-1);
-
- /*
- * Now make sure for cases 2 and 3 that the "extra"
- * bits that slopped past the last full byte were
- * zeros. If we don't check them, they become a
- * subliminal channel.
- */
- if (target && target[tarindex] != 0)
- return (-1);
- }
- } else {
- /*
- * We ended by seeing the end of the string. Make sure we
- * have no partial bytes lying around.
- */
- if (state != 0)
- return (-1);
- }
-
- return (tarindex);
-}
-
-int
-p11_b64_ntop (const unsigned char *src,
- size_t srclength,
- char *target,
- size_t targsize,
- int breakl)
-{
- size_t len = 0;
- unsigned char input[3];
- unsigned char output[4];
- size_t i;
-
- while (srclength > 0) {
- if (2 < srclength) {
- input[0] = *src++;
- input[1] = *src++;
- input[2] = *src++;
- srclength -= 3;
-
- output[0] = input[0] >> 2;
- output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4);
- output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6);
- output[3] = input[2] & 0x3f;
-
- } else if (0 != srclength) {
- /* Get what's left. */
- input[0] = input[1] = input[2] = '\0';
- for (i = 0; i < srclength; i++)
- input[i] = *src++;
-
- output[0] = input[0] >> 2;
- output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4);
- if (srclength == 1)
- output[2] = 255;
- else
- output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6);
- output[3] = 255;
-
- srclength = 0;
- }
-
- for (i = 0; i < 4; i++) {
- if (breakl && len % (breakl + 1) == 0) {
- assert (len + 1 < targsize);
- target[len++] = '\n';
- }
-
- assert(output[i] == 255 || output[i] < 64);
- assert (len + 1 < targsize);
-
- if (output[i] == 255)
- target[len++] = Pad64;
- else
- target[len++] = Base64[output[i]];
- }
- }
-
- assert (len < targsize);
- target[len] = '\0'; /* Returned value doesn't count \0. */
- return len;
-}
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