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-rw-r--r--tipc/misc.c171
1 files changed, 171 insertions, 0 deletions
diff --git a/tipc/misc.c b/tipc/misc.c
new file mode 100644
index 0000000..6175bf0
--- /dev/null
+++ b/tipc/misc.c
@@ -0,0 +1,171 @@
+/*
+ * misc.c Miscellaneous TIPC helper functions.
+ *
+ * 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.
+ *
+ * Authors: Richard Alpe <richard.alpe@ericsson.com>
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <linux/tipc.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <errno.h>
+#include "misc.h"
+
+#define IN_RANGE(val, low, high) ((val) <= (high) && (val) >= (low))
+
+uint32_t str2addr(char *str)
+{
+ unsigned int z, c, n;
+ char dummy;
+
+ if (sscanf(str, "%u.%u.%u%c", &z, &c, &n, &dummy) != 3) {
+ fprintf(stderr, "invalid network address, syntax: Z.C.N\n");
+ return 0;
+ }
+
+ if (IN_RANGE(z, 0, 255) && IN_RANGE(c, 0, 4095) && IN_RANGE(n, 0, 4095))
+ return tipc_addr(z, c, n);
+
+ fprintf(stderr, "invalid network address \"%s\"\n", str);
+ return 0;
+}
+
+static int is_hex(char *arr, int last)
+{
+ int i;
+
+ while (!arr[last])
+ last--;
+
+ for (i = 0; i <= last; i++) {
+ if (!IN_RANGE(arr[i], '0', '9') &&
+ !IN_RANGE(arr[i], 'a', 'f') &&
+ !IN_RANGE(arr[i], 'A', 'F'))
+ return 0;
+ }
+ return 1;
+}
+
+static int is_name(char *arr, int last)
+{
+ int i;
+ char c;
+
+ while (!arr[last])
+ last--;
+
+ if (last > 15)
+ return 0;
+
+ for (i = 0; i <= last; i++) {
+ c = arr[i];
+ if (!IN_RANGE(c, '0', '9') && !IN_RANGE(c, 'a', 'z') &&
+ !IN_RANGE(c, 'A', 'Z') && c != '-' && c != '_' &&
+ c != '.' && c != ':' && c != '@')
+ return 0;
+ }
+ return 1;
+}
+
+int str2nodeid(char *str, uint8_t *id)
+{
+ int len = strlen(str);
+ int i;
+
+ if (len > 32)
+ return -1;
+
+ if (is_name(str, len - 1)) {
+ memcpy(id, str, len);
+ return 0;
+ }
+ if (!is_hex(str, len - 1))
+ return -1;
+
+ str[len] = '0';
+ for (i = 0; i < 16; i++) {
+ if (sscanf(&str[2 * i], "%2hhx", &id[i]) != 1)
+ break;
+ }
+ return 0;
+}
+
+int str2key(char *str, struct tipc_aead_key *key)
+{
+ int len = strlen(str);
+ int ishex = 0;
+ int i;
+
+ /* Check if the input is a hex string (i.e. 0x...) */
+ if (len > 2 && strncmp(str, "0x", 2) == 0) {
+ ishex = is_hex(str + 2, len - 2 - 1);
+ if (ishex) {
+ len -= 2;
+ str += 2;
+ }
+ }
+
+ key->keylen = ishex ? (len + 1) / 2 : len;
+ if (key->keylen > TIPC_AEAD_KEYLEN_MAX)
+ return -1;
+
+ /* Obtain key: */
+ if (!ishex) {
+ memcpy(key->key, str, len);
+ } else {
+ /* Convert hex string to key */
+ for (i = 0; i < key->keylen; i++) {
+ if (i == 0 && len % 2 != 0) {
+ if (sscanf(str, "%1hhx", &key->key[0]) != 1)
+ return -1;
+ str += 1;
+ continue;
+ }
+ if (sscanf(str, "%2hhx", &key->key[i]) != 1)
+ return -1;
+ str += 2;
+ }
+ }
+
+ return 0;
+}
+
+void nodeid2str(uint8_t *id, char *str)
+{
+ int i;
+
+ if (is_name((char *)id, 15)) {
+ memcpy(str, id, 16);
+ return;
+ }
+
+ for (i = 0; i < 16; i++)
+ sprintf(&str[2 * i], "%02x", id[i]);
+
+ for (i = 31; str[i] == '0'; i--)
+ str[i] = 0;
+}
+
+void hash2nodestr(uint32_t hash, char *str)
+{
+ struct tipc_sioc_nodeid_req nr = {};
+ int sd;
+
+ sd = socket(AF_TIPC, SOCK_RDM, 0);
+ if (sd < 0) {
+ fprintf(stderr, "opening TIPC socket: %s\n", strerror(errno));
+ return;
+ }
+ nr.peer = hash;
+ if (!ioctl(sd, SIOCGETNODEID, &nr))
+ nodeid2str((uint8_t *)nr.node_id, str);
+ close(sd);
+}