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Reorganized sources slightly.

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This commit is contained in:
Jan Vidar Krey
2009-07-25 20:05:27 +02:00
parent e281f61472
commit 36a07e3f7e
52 changed files with 72 additions and 69 deletions
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61
src/adc/sid.c Normal file
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/*
* uhub - A tiny ADC p2p connection hub
* Copyright (C) 2007-2009, Jan Vidar Krey
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "uhub.h"
const char* BASE32_ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
char* sid_to_string(sid_t sid_)
{
static char t_sid[5];
sid_t sid = (sid_ & 0xFFFFF); /* 20 bits only */
sid_t A, B, C, D = 0;
D = (sid % 32);
sid = (sid - D) / 32;
C = (sid % 32);
sid = (sid - C) / 32;
B = (sid % 32);
sid = (sid - B) / 32;
A = (sid % 32);
t_sid[0] = BASE32_ALPHABET[A];
t_sid[1] = BASE32_ALPHABET[B];
t_sid[2] = BASE32_ALPHABET[C];
t_sid[3] = BASE32_ALPHABET[D];
t_sid[4] = 0;
return t_sid;
}
sid_t string_to_sid(const char* sid)
{
sid_t nsid = 0;
sid_t n, x;
sid_t factors[] = { 32768, 1024, 32, 1};
if (!sid || strlen(sid) != 4) return 0;
for (n = 0; n < 4; n++) {
for (x = 0; x < strlen(BASE32_ALPHABET); x++)
if (sid[n] == BASE32_ALPHABET[x]) break;
if (x == 32) return 0;
nsid += x * factors[n];
}
return nsid;
}