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/*
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* misc.c Miscellaneous TIPC helper functions.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Richard Alpe <richard.alpe@ericsson.com>
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <linux/tipc.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <unistd.h>
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#include <errno.h>
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#include "misc.h"
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#define IN_RANGE(val, low, high) ((val) <= (high) && (val) >= (low))
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uint32_t str2addr(char *str)
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{
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unsigned int z, c, n;
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char dummy;
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if (sscanf(str, "%u.%u.%u%c", &z, &c, &n, &dummy) != 3) {
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fprintf(stderr, "invalid network address, syntax: Z.C.N\n");
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return 0;
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}
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if (IN_RANGE(z, 0, 255) && IN_RANGE(c, 0, 4095) && IN_RANGE(n, 0, 4095))
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return tipc_addr(z, c, n);
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fprintf(stderr, "invalid network address \"%s\"\n", str);
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return 0;
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}
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static int is_hex(char *arr, int last)
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{
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int i;
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while (!arr[last])
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last--;
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for (i = 0; i <= last; i++) {
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if (!IN_RANGE(arr[i], '0', '9') &&
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!IN_RANGE(arr[i], 'a', 'f') &&
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!IN_RANGE(arr[i], 'A', 'F'))
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return 0;
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}
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return 1;
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}
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static int is_name(char *arr, int last)
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{
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int i;
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char c;
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while (!arr[last])
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last--;
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if (last > 15)
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return 0;
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for (i = 0; i <= last; i++) {
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c = arr[i];
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if (!IN_RANGE(c, '0', '9') && !IN_RANGE(c, 'a', 'z') &&
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!IN_RANGE(c, 'A', 'Z') && c != '-' && c != '_' &&
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c != '.' && c != ':' && c != '@')
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return 0;
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}
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return 1;
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}
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int str2nodeid(char *str, uint8_t *id)
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{
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int len = strlen(str);
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int i;
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if (len > 32)
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return -1;
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if (is_name(str, len - 1)) {
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memcpy(id, str, len);
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return 0;
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}
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if (!is_hex(str, len - 1))
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return -1;
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str[len] = '0';
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for (i = 0; i < 16; i++) {
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if (sscanf(&str[2 * i], "%2hhx", &id[i]) != 1)
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break;
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}
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return 0;
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}
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void nodeid2str(uint8_t *id, char *str)
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{
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int i;
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if (is_name((char *)id, 15)) {
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memcpy(str, id, 16);
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return;
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}
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for (i = 0; i < 16; i++)
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sprintf(&str[2 * i], "%02x", id[i]);
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for (i = 31; str[i] == '0'; i--)
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str[i] = 0;
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}
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void hash2nodestr(uint32_t hash, char *str)
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{
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struct tipc_sioc_nodeid_req nr = {};
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int sd;
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sd = socket(AF_TIPC, SOCK_RDM, 0);
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if (sd < 0) {
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fprintf(stderr, "opening TIPC socket: %s\n", strerror(errno));
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return;
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}
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nr.peer = hash;
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if (!ioctl(sd, SIOCGETNODEID, &nr))
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nodeid2str((uint8_t *)nr.node_id, str);
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close(sd);
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}
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