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Diffstat (limited to 'contrib/idn/mdnkit/lib/ace.c')
| -rw-r--r-- | contrib/idn/mdnkit/lib/ace.c | 291 |
1 files changed, 0 insertions, 291 deletions
diff --git a/contrib/idn/mdnkit/lib/ace.c b/contrib/idn/mdnkit/lib/ace.c deleted file mode 100644 index 556f3857..00000000 --- a/contrib/idn/mdnkit/lib/ace.c +++ /dev/null @@ -1,291 +0,0 @@ -#ifndef lint -static char *rcsid = "$Id: ace.c,v 1.1.2.1 2002/02/08 12:13:36 marka Exp $"; -#endif - -/* - * Copyright (c) 2000,2001 Japan Network Information Center. - * All rights reserved. - * - * By using this file, you agree to the terms and conditions set forth bellow. - * - * LICENSE TERMS AND CONDITIONS - * - * The following License Terms and Conditions apply, unless a different - * license is obtained from Japan Network Information Center ("JPNIC"), - * a Japanese association, Kokusai-Kougyou-Kanda Bldg 6F, 2-3-4 Uchi-Kanda, - * Chiyoda-ku, Tokyo 101-0047, Japan. - * - * 1. Use, Modification and Redistribution (including distribution of any - * modified or derived work) in source and/or binary forms is permitted - * under this License Terms and Conditions. - * - * 2. Redistribution of source code must retain the copyright notices as they - * appear in each source code file, this License Terms and Conditions. - * - * 3. Redistribution in binary form must reproduce the Copyright Notice, - * this License Terms and Conditions, in the documentation and/or other - * materials provided with the distribution. For the purposes of binary - * distribution the "Copyright Notice" refers to the following language: - * "Copyright (c) Japan Network Information Center. All rights reserved." - * - * 4. Neither the name of JPNIC may be used to endorse or promote products - * derived from this Software without specific prior written approval of - * JPNIC. - * - * 5. Disclaimer/Limitation of Liability: THIS SOFTWARE IS PROVIDED BY JPNIC - * "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 JPNIC 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 DAMAGES. - * - * 6. Indemnification by Licensee - * Any person or entities using and/or redistributing this Software under - * this License Terms and Conditions shall defend indemnify and hold - * harmless JPNIC from and against any and all judgements damages, - * expenses, settlement liabilities, cost and other liabilities of any - * kind as a result of use and redistribution of this Software or any - * claim, suite, action, litigation or proceeding by any third party - * arising out of or relates to this License Terms and Conditions. - * - * 7. Governing Law, Jurisdiction and Venue - * This License Terms and Conditions shall be governed by and and - * construed in accordance with the law of Japan. Any person or entities - * using and/or redistributing this Software under this License Terms and - * Conditions hereby agrees and consent to the personal and exclusive - * jurisdiction and venue of Tokyo District Court of Japan. - */ - -#include <config.h> - -#include <stddef.h> -#include <stdlib.h> -#include <string.h> - -#include <mdn/result.h> -#include <mdn/assert.h> -#include <mdn/converter.h> -#include <mdn/util.h> -#include <mdn/ace.h> - -static mdn_result_t l2u(mdn__ace_t *ctx, const char *from, const char *end, - char *to, size_t tolen, size_t *clenp); -static mdn_result_t u2l(mdn__ace_t *ctx, const char *from, const char *end, - char *to, size_t tolen, size_t *clenp); - -mdn_result_t -mdn__ace_convert(mdn__ace_t *ctx, mdn_converter_dir_t dir, - const char *from, char *to, size_t tolen) -{ - assert(ctx != NULL && ctx->encoder != NULL && ctx->decoder != NULL && - from != NULL && to != NULL && - (dir == mdn_converter_l2u || dir == mdn_converter_u2l)); - - for (;;) { - const char *end; - size_t convlen = 0; - mdn_result_t r; - - /* - * Find the end of this component (label). - */ - if ((end = strchr(from, '.')) == NULL) - end = from + strlen(from); - - /* - * Convert it. - */ - if (end > from) { - if (dir == mdn_converter_l2u) - r = l2u(ctx, from, end, to, tolen, &convlen); - else - r = u2l(ctx, from, end, to, tolen, &convlen); - if (r != mdn_success) - return (r); - } - - /* - * Copy '.' or NUL. - */ - if (tolen <= convlen) - return (mdn_buffer_overflow); - - to += convlen; - *to++ = *end; - tolen -= convlen + 1; - - /* - * Finished? - */ - if (*end == '\0') { - break; - } else if (*(end + 1) == '\0') { - /* End with '.' */ - if (tolen < 1) - return (mdn_buffer_overflow); - *to++ = '\0'; - tolen--; - break; - } - - from = end + 1; - } - - return (mdn_success); -} - -static mdn_result_t -l2u(mdn__ace_t *ctx, const char *from, const char *end, - char *to, size_t tolen, size_t *clenp) -{ - size_t acelen = end - from; - size_t idlen = strlen(ctx->id_str); - size_t utflen; - const char *top; - mdn_result_t r; - char *buf; - char local_buf[256]; - - if (ctx->id_type == mdn__ace_prefix && - acelen >= idlen && - mdn_util_casematch(from, ctx->id_str, idlen)) { - /* - * Prefix found. - */ - top = from + idlen; - acelen -= idlen; - } else if (ctx->id_type == mdn__ace_suffix && - acelen >= idlen && - mdn_util_casematch(end - idlen, ctx->id_str, idlen)) { - /* - * Suffix found. - */ - top = from; - acelen -= idlen; - } else { - /* - * Not ACE encoded. - */ - copy: - /* - * Check if it comforms to STD-13. - */ - if (!mdn_util_validstd13(from, end)) { - /* invalid character found */ - return (mdn_invalid_encoding); - } - - /* - * Copy verbatim. - */ - acelen = end - from; - if (tolen < acelen) - return (mdn_buffer_overflow); - (void)memcpy(to, from, acelen); - - *clenp = acelen; - return (mdn_success); - } - - /* - * Now, top and acelen refers the ACE encoded name - * without prefix/suffix. - */ - - /* Decode it. */ - r = (*ctx->decoder)(top, acelen, to, tolen); - if (r == mdn_invalid_encoding) - goto copy; - else if (r != mdn_success) - return (r); - - *clenp = utflen = strlen(to); - - /* - * Check if the decode result is a STD13 conforming name. - */ - if (mdn_util_validstd13(to, to + utflen)) - return (mdn_invalid_encoding); - - /* - * Do round-trip conversion check. Encode the decoded result, - * and compare it with the original. If they don't match, - * the original name must be illegally encoded. - * - * We need a buffer at least acelen+1 (for the NUL byte) bytes long. - */ - if (acelen >= sizeof(local_buf)) { - if ((buf = malloc(acelen + 1)) == NULL) - return (mdn_nomemory); - } else { - buf = local_buf; - } - if ((*ctx->encoder)(to, utflen, buf, acelen + 1) != mdn_success || - strlen(buf) != acelen || - !mdn_util_casematch(buf, top, acelen)) { - r = mdn_invalid_encoding; - } - if (buf != local_buf) - free(buf); - - return (r); -} - -static mdn_result_t -u2l(mdn__ace_t *ctx, const char *from, const char *end, - char *to, size_t tolen, size_t *clenp) -{ - size_t len = end - from; - - /* - * See if encoding is really necessary. - */ - if (!mdn_util_validstd13(from, end)) { - /* - * Conversion is necessary. - */ - mdn_result_t r; - size_t idlen = strlen(ctx->id_str); - size_t acelen; - - if (ctx->id_type == mdn__ace_prefix) { - /* Prepend prefix. */ - if (tolen < idlen) - return (mdn_buffer_overflow); - (void)memcpy(to, ctx->id_str, idlen); - to += idlen; - tolen -= idlen; - } - - r = (*ctx->encoder)(from, len, to, tolen); - if (r != mdn_success) - return (r); - acelen = strlen(to); - - if (ctx->id_type == mdn__ace_suffix) { - /* Append suffix. */ - if (acelen + idlen > tolen) - return (mdn_buffer_overflow); - (void)memcpy(to + acelen, ctx->id_str, idlen); - } - - len = idlen + acelen; - } else { - /* - * Conversion is NOT necessary. - * Copy verbatim. - */ - - if (tolen < len) - return (mdn_buffer_overflow); - - (void)memcpy(to, from, len); - } - *clenp = len; - return (mdn_success); -} |