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877f63e99e
This is a rebased and combined patch for Tor support. It is extensively reworked in the following patches, but the basis remains Saibato's work, so it seemed fairest to begin with this. Minor changes: 1. Use --announce-addr instead of --tor-external. 2. I also reverted some whitespace and unrelated changes from the patch. 3. Removed unnecessary ';' after } in functions. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
#include <common/base32.h>
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#include <sys/types.h>
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/* This is a rework of what i found on the Net about base32
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*
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* so Orum (shallot) and Markus Gutschke (Google.inc) should be mentioned here
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define BASE32DATA "abcdefghijklmnopqrstuvwxyz234567"
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char *b32_encode(char *dst, u8 * src, u8 ver)
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{
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u16 byte = 0, poff = 0;
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for (; byte < ((ver == 2) ? 16 : 56); poff += 5) {
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if (poff > 7) {
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poff -= 8;
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src++;
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}
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dst[byte++] =
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BASE32DATA[(htobe16(*(u16 *) src) >> (11 - poff)) & (u16)
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0x001F];
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}
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dst[byte] = 0;
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return dst;
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}
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//FIXME quiknditry
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void b32_decode(u8 * dst, u8 * src, u8 ver)
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{
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int rem = 0;
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int i;
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u8 *p = src;
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int buf;
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u8 ch;
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for (i = 0; i < ((ver == 2) ? 16 : 56); p++) {
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ch = *p;
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buf <<= 5;
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if ((ch >= 'a' && ch <= 'z')) {
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ch = (ch & 0x1F) - 1;
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} else if (ch != '.') {
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ch -= '2' - 0x1A;
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} else return;
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buf = buf | ch;
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rem = rem + 5;
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if (rem >= 8) {
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dst[i++] = buf >> (rem - 8);
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rem -= 8;
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}
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}
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}
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