strcpy(s, "ip6.arpa");
}
-static char *reverse_hosts(char *buf, const unsigned char *a, unsigned scopeid, int family)
+static void reverse_hosts(char *buf, const unsigned char *a, unsigned scopeid, int family)
{
char line[512], *p, *z;
unsigned char _buf[1032], atmp[16];
struct address iplit;
FILE _f, *f = __fopen_rb_ca("/etc/hosts", &_f, _buf, sizeof _buf);
- if (!f) return 0;
+ if (!f) return;
if (family == AF_INET) {
memcpy(atmp+12, a, 4);
memcpy(atmp, "\0\0\0\0\0\0\0\0\0\0\xff\xff", 12);
}
}
__fclose_ca(f);
- return 0;
+}
+
+static void reverse_services(char *buf, int port, int dgram)
+{
+ unsigned long svport;
+ char line[128], *p, *z;
+ unsigned char _buf[1032];
+ FILE _f, *f = __fopen_rb_ca("/etc/services", &_f, _buf, sizeof _buf);
+ if (!f) return;
+ while (fgets(line, sizeof line, f)) {
+ if ((p=strchr(line, '#'))) *p++='\n', *p=0;
+
+ for (p=line; *p && !isspace(*p); p++);
+ if (!*p) continue;
+ *p++ = 0;
+ svport = strtoul(p, &z, 10);
+
+ if (svport != port || z==p) continue;
+ if (dgram && strncmp(z, "/udp", 4)) continue;
+ if (!dgram && strncmp(z, "/tcp", 4)) continue;
+ if (p-line > 32) continue;
+
+ memcpy(buf, line, p-line);
+ break;
+ }
+ __fclose_ca(f);
}
static int dns_parse_callback(void *c, int rr, const void *data, int len, const void *packet)
{
- char tmp[256];
if (rr != RR_PTR) return 0;
if (__dn_expand(packet, (const unsigned char *)packet + 512,
- data, tmp, sizeof tmp) > 0)
- strcpy(c, tmp);
+ data, c, 256) <= 0)
+ *(char *)c = 0;
return 0;
}
switch (af) {
case AF_INET:
a = (void *)&((struct sockaddr_in *)sa)->sin_addr;
- if (sl != sizeof(struct sockaddr_in)) return EAI_FAMILY;
+ if (sl < sizeof(struct sockaddr_in)) return EAI_FAMILY;
mkptr4(ptr, a);
scopeid = 0;
break;
case AF_INET6:
a = (void *)&((struct sockaddr_in6 *)sa)->sin6_addr;
- if (sl != sizeof(struct sockaddr_in6)) return EAI_FAMILY;
+ if (sl < sizeof(struct sockaddr_in6)) return EAI_FAMILY;
if (memcmp(a, "\0\0\0\0\0\0\0\0\0\0\xff\xff", 12))
mkptr6(ptr, a);
else
}
if (serv && servlen) {
- char *p = itoa(num, ntohs(((struct sockaddr_in *)sa)->sin_port));
+ char *p = buf;
+ int port = ntohs(((struct sockaddr_in *)sa)->sin_port);
+ buf[0] = 0;
+ if (!(flags & NI_NUMERICSERV))
+ reverse_services(buf, port, flags & NI_DGRAM);
+ if (!*p)
+ p = itoa(num, port);
if (strlen(p) >= servlen)
return EAI_OVERFLOW;
strcpy(serv, p);