#include <stdio.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> static struct tests { const char *input; int valid; uint32_t result; } tests[] = { { "", 0, 0 }, { "-1", 0, 0 }, { "256", 1, 0x00000100 }, { "256.", 0, 0 }, { "256a", 0, 0 }, { "0x100", 1, 0x00000100 }, { "0200.0x123456", 1, 0x80123456 }, { "0300.0x89123456.", 0 ,0 }, { "0100.-0xffff0000", 0, 0 }, { "0.0xffffff", 1, 0x00ffffff }, { "0.0x1000000", 0, 0 }, { "0377.16777215", 1, 0xffffffff }, { "0377.16777216", 0, 0 }, { "0x87.077777777", 1, 0x87ffffff }, { "0x87.0100000000", 0, 0 }, { "0.1.3", 1, 0x00010003 }, { "0.256.3", 0, 0 }, { "256.1.3", 0, 0 }, { "0.1.0x10000", 0, 0 }, { "0.1.0xffff", 1, 0x0001ffff }, { "0.1a.3", 0, 0 }, { "0.1.a3", 0, 0 }, { "1.2.3.4", 1, 0x01020304 }, { "0400.2.3.4", 0, 0 }, { "1.0x100.3.4", 0, 0 }, { "1.2.256.4", 0, 0 }, { "1.2.3.0x100", 0, 0 }, { "323543357756889", 0, 0 }, { "10.1.2.3.4", 0, 0}, }; int main (int argc, char *argv[]) { int result = 0; size_t cnt; for (cnt = 0; cnt < sizeof (tests) / sizeof (tests[0]); ++cnt) { struct in_addr addr; if ((int) inet_aton (tests[cnt].input, &addr) != tests[cnt].valid) { if (tests[cnt].valid) printf ("\"%s\" not seen as valid IP address\n", tests[cnt].input); else printf ("\"%s\" seen as valid IP address\n", tests[cnt].input); result = 1; } else if (tests[cnt].valid && addr.s_addr != ntohl (tests[cnt].result)) { printf ("\"%s\" not converted correctly: is %08x, should be %08x\n", tests[cnt].input, addr.s_addr, tests[cnt].result); result = 1; } } return result; }