Zabbix
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xxxxxxxxxx/*** Zabbix** Copyright (C) 2001-2023 Zabbix SIA**** 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 2 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, write to the Free Software** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.**//****************************************************************************** * * * Purpose: after each delta is encoded or decoded, bias should be set for * * the next delta (should be adapted) * * * * Parameters: delta - [IN] punycode delta (generalized variable-length * * integer) * * count - [IN] is the total number of code points encoded / * * decoded so far * * divisor - [IN] delta divisor (to avoid overflow) * * * * Return value: adapted bias * * * ******************************************************************************/static zbx_uint32_t punycode_adapt(zbx_uint32_t delta, int count, int divisor){ zbx_uint32_t i; delta /= divisor; delta += delta / count; for (i = 0; PUNYCODE_BIAS_LIMIT < delta; i += PUNYCODE_BASE) delta /= PUNYCODE_BASE_MAX; return ((PUNYCODE_BASE * delta) / (delta + PUNYCODE_SKEW)) + i;}/****************************************************************************** * * * Purpose: encodes punycode digit into ansi character [a-z0-9] * * * * Parameters: digit - [IN] digit to encode * * * * Return value: encoded character * * * ******************************************************************************/static char punycode_encode_digit(int digit){ if (0 <= digit && 25 >= digit) return digit + 'a'; else if (25 < digit && PUNYCODE_BASE > digit) return digit + 22; THIS_SHOULD_NEVER_HAPPEN; return '\0';}/****************************************************************************** * * * Purpose: encodes array of unicode codepoints into punycode (RFC 3492) * * * * Parameters: codepoints - [IN] codepoints to encode * * count - [IN] codepoint count * * output - [OUT] encoded result * * length - [IN] length of result buffer * * * * Return value: SUCCEED if encoding was successful. FAIL on error. * * * ******************************************************************************/static int punycode_encode_codepoints(zbx_uint32_t *codepoints, size_t count, char *output, size_t length){ int ret = FAIL; zbx_uint32_t n, delta = 0, bias, max_codepoint, q, k, t; size_t h = 0, out = 0, offset, j; n = PUNYCODE_INITIAL_N; bias = PUNYCODE_INITIAL_BIAS;