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Diffstat (limited to 'contrib/bind9/lib/isc/base64.c')
-rw-r--r--contrib/bind9/lib/isc/base64.c246
1 files changed, 0 insertions, 246 deletions
diff --git a/contrib/bind9/lib/isc/base64.c b/contrib/bind9/lib/isc/base64.c
deleted file mode 100644
index 445f8f56337b..000000000000
--- a/contrib/bind9/lib/isc/base64.c
+++ /dev/null
@@ -1,246 +0,0 @@
-/*
- * Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
- * Copyright (C) 1998-2001, 2003 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 ISC DISCLAIMS ALL WARRANTIES WITH
- * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS. IN NO EVENT SHALL ISC 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.
- */
-
-/* $Id: base64.c,v 1.23.2.2.2.3 2004/03/06 08:14:27 marka Exp $ */
-
-#include <config.h>
-
-#include <isc/base64.h>
-#include <isc/buffer.h>
-#include <isc/lex.h>
-#include <isc/string.h>
-#include <isc/util.h>
-
-#define RETERR(x) do { \
- isc_result_t _r = (x); \
- if (_r != ISC_R_SUCCESS) \
- return (_r); \
- } while (0)
-
-
-/*
- * These static functions are also present in lib/dns/rdata.c. I'm not
- * sure where they should go. -- bwelling
- */
-static isc_result_t
-str_totext(const char *source, isc_buffer_t *target);
-
-static isc_result_t
-mem_tobuffer(isc_buffer_t *target, void *base, unsigned int length);
-
-static const char base64[] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
-
-isc_result_t
-isc_base64_totext(isc_region_t *source, int wordlength,
- const char *wordbreak, isc_buffer_t *target)
-{
- char buf[5];
- unsigned int loops = 0;
-
- if (wordlength < 4)
- wordlength = 4;
-
- memset(buf, 0, sizeof(buf));
- while (source->length > 2) {
- buf[0] = base64[(source->base[0]>>2)&0x3f];
- buf[1] = base64[((source->base[0]<<4)&0x30)|
- ((source->base[1]>>4)&0x0f)];
- buf[2] = base64[((source->base[1]<<2)&0x3c)|
- ((source->base[2]>>6)&0x03)];
- buf[3] = base64[source->base[2]&0x3f];
- RETERR(str_totext(buf, target));
- isc_region_consume(source, 3);
-
- loops++;
- if (source->length != 0 &&
- (int)((loops + 1) * 4) >= wordlength)
- {
- loops = 0;
- RETERR(str_totext(wordbreak, target));
- }
- }
- if (source->length == 2) {
- buf[0] = base64[(source->base[0]>>2)&0x3f];
- buf[1] = base64[((source->base[0]<<4)&0x30)|
- ((source->base[1]>>4)&0x0f)];
- buf[2] = base64[((source->base[1]<<2)&0x3c)];
- buf[3] = '=';
- RETERR(str_totext(buf, target));
- } else if (source->length == 1) {
- buf[0] = base64[(source->base[0]>>2)&0x3f];
- buf[1] = base64[((source->base[0]<<4)&0x30)];
- buf[2] = buf[3] = '=';
- RETERR(str_totext(buf, target));
- }
- return (ISC_R_SUCCESS);
-}
-
-/*
- * State of a base64 decoding process in progress.
- */
-typedef struct {
- int length; /* Desired length of binary data or -1 */
- isc_buffer_t *target; /* Buffer for resulting binary data */
- int digits; /* Number of buffered base64 digits */
- isc_boolean_t seen_end; /* True if "=" end marker seen */
- int val[4];
-} base64_decode_ctx_t;
-
-static inline void
-base64_decode_init(base64_decode_ctx_t *ctx, int length, isc_buffer_t *target)
-{
- ctx->digits = 0;
- ctx->seen_end = ISC_FALSE;
- ctx->length = length;
- ctx->target = target;
-}
-
-static inline isc_result_t
-base64_decode_char(base64_decode_ctx_t *ctx, int c) {
- char *s;
-
- if (ctx->seen_end)
- return (ISC_R_BADBASE64);
- if ((s = strchr(base64, c)) == NULL)
- return (ISC_R_BADBASE64);
- ctx->val[ctx->digits++] = s - base64;
- if (ctx->digits == 4) {
- int n;
- unsigned char buf[3];
- if (ctx->val[0] == 64 || ctx->val[1] == 64)
- return (ISC_R_BADBASE64);
- if (ctx->val[2] == 64 && ctx->val[3] != 64)
- return (ISC_R_BADBASE64);
- /*
- * Check that bits that should be zero are.
- */
- if (ctx->val[2] == 64 && (ctx->val[1] & 0xf) != 0)
- return (ISC_R_BADBASE64);
- /*
- * We don't need to test for ctx->val[2] != 64 as
- * the bottom two bits of 64 are zero.
- */
- if (ctx->val[3] == 64 && (ctx->val[2] & 0x3) != 0)
- return (ISC_R_BADBASE64);
- n = (ctx->val[2] == 64) ? 1 :
- (ctx->val[3] == 64) ? 2 : 3;
- if (n != 3) {
- ctx->seen_end = ISC_TRUE;
- if (ctx->val[2] == 64)
- ctx->val[2] = 0;
- if (ctx->val[3] == 64)
- ctx->val[3] = 0;
- }
- buf[0] = (ctx->val[0]<<2)|(ctx->val[1]>>4);
- buf[1] = (ctx->val[1]<<4)|(ctx->val[2]>>2);
- buf[2] = (ctx->val[2]<<6)|(ctx->val[3]);
- RETERR(mem_tobuffer(ctx->target, buf, n));
- if (ctx->length >= 0) {
- if (n > ctx->length)
- return (ISC_R_BADBASE64);
- else
- ctx->length -= n;
- }
- ctx->digits = 0;
- }
- return (ISC_R_SUCCESS);
-}
-
-static inline isc_result_t
-base64_decode_finish(base64_decode_ctx_t *ctx) {
- if (ctx->length > 0)
- return (ISC_R_UNEXPECTEDEND);
- if (ctx->digits != 0)
- return (ISC_R_BADBASE64);
- return (ISC_R_SUCCESS);
-}
-
-isc_result_t
-isc_base64_tobuffer(isc_lex_t *lexer, isc_buffer_t *target, int length) {
- base64_decode_ctx_t ctx;
- isc_textregion_t *tr;
- isc_token_t token;
- isc_boolean_t eol;
-
- base64_decode_init(&ctx, length, target);
-
- while (!ctx.seen_end && (ctx.length != 0)) {
- unsigned int i;
-
- if (length > 0)
- eol = ISC_FALSE;
- else
- eol = ISC_TRUE;
- RETERR(isc_lex_getmastertoken(lexer, &token,
- isc_tokentype_string, eol));
- if (token.type != isc_tokentype_string)
- break;
- tr = &token.value.as_textregion;
- for (i = 0; i < tr->length; i++)
- RETERR(base64_decode_char(&ctx, tr->base[i]));
- }
- if (ctx.length < 0 && !ctx.seen_end)
- isc_lex_ungettoken(lexer, &token);
- RETERR(base64_decode_finish(&ctx));
- return (ISC_R_SUCCESS);
-}
-
-isc_result_t
-isc_base64_decodestring(const char *cstr, isc_buffer_t *target) {
- base64_decode_ctx_t ctx;
-
- base64_decode_init(&ctx, -1, target);
- for (;;) {
- int c = *cstr++;
- if (c == '\0')
- break;
- if (c == ' ' || c == '\t' || c == '\n' || c== '\r')
- continue;
- RETERR(base64_decode_char(&ctx, c));
- }
- RETERR(base64_decode_finish(&ctx));
- return (ISC_R_SUCCESS);
-}
-
-static isc_result_t
-str_totext(const char *source, isc_buffer_t *target) {
- unsigned int l;
- isc_region_t region;
-
- isc_buffer_availableregion(target, &region);
- l = strlen(source);
-
- if (l > region.length)
- return (ISC_R_NOSPACE);
-
- memcpy(region.base, source, l);
- isc_buffer_add(target, l);
- return (ISC_R_SUCCESS);
-}
-
-static isc_result_t
-mem_tobuffer(isc_buffer_t *target, void *base, unsigned int length) {
- isc_region_t tr;
-
- isc_buffer_availableregion(target, &tr);
- if (length > tr.length)
- return (ISC_R_NOSPACE);
- memcpy(tr.base, base, length);
- isc_buffer_add(target, length);
- return (ISC_R_SUCCESS);
-}
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