1 /* 2 * decodenetnum - return a net number (this is crude, but careful) 3 */ 4 #include <sys/types.h> 5 #include <ctype.h> 6 #include <sys/socket.h> 7 #include <netinet/in.h> 8 9 #include "ntp_stdlib.h" 10 11 int 12 decodenetnum( 13 const char *num, 14 struct sockaddr_storage *netnum 15 ) 16 { 17 struct addrinfo hints, *ai = NULL; 18 register int err, i; 19 register const char *cp; 20 char name[80]; 21 22 cp = num; 23 24 if (*cp == '[') { 25 cp++; 26 for (i = 0; *cp != ']'; cp++, i++) 27 name[i] = *cp; 28 name[i] = '\0'; 29 num = name; 30 } 31 memset(&hints, 0, sizeof(struct addrinfo)); 32 hints.ai_flags = AI_NUMERICHOST; 33 err = getaddrinfo(num, NULL, &hints, &ai); 34 if (err != 0) 35 return 0; 36 memcpy(netnum, (struct sockaddr_storage *)ai->ai_addr, ai->ai_addrlen); 37 freeaddrinfo(ai); 38 return 1; 39 } 40