fix return value for inet_pton in ipv6 failure cases

in the case of input that does not match the expected form, the
correct return value is 0, not -1.

diff --git a/src/network/inet_pton.c b/src/network/inet_pton.c
index 5c4850a..8f7c17b 100644 (file)
--- a/src/network/inet_pton.c
+++ b/src/network/inet_pton.c
@@ -46,24 +46,24 @@ int inet_pton(int af, const char *restrict s, void *restrict a0)
                        if (!s[1]) break;
                        continue;
                }
-               if (hexval(s[0])<0) return -1;
+               if (hexval(s[0])<0) return 0;
                while (s[0]=='0' && s[1]=='0') s++;
                for (v=j=0; j<5 && (d=hexval(s[j]))>=0; j++)
                        v=16*v+d;
-               if (v > 65535) return -1;
+               if (v > 65535) return 0;
                ip[i] = v;
                if (!s[j]) {
-                       if (brk<0 && i!=7) return -1;
+                       if (brk<0 && i!=7) return 0;
                        break;
                }
                if (i<7) {
                        if (s[j]==':') continue;
-                       if (s[j]!='.') return -1;
+                       if (s[j]!='.') return 0;
                        need_v4=1;
                        i++;
                        break;
                }
-               return -1;
+               return 0;
        }
        if (brk>=0) {
                memmove(ip+brk+7-i, ip+brk, 2*(i+1-brk));
@@ -73,6 +73,6 @@ int inet_pton(int af, const char *restrict s, void *restrict a0)
                *a++ = ip[j]>>8;
                *a++ = ip[j];
        }
-       if (need_v4 &&inet_pton(AF_INET, (void *)s, a-4) <= 0) return -1;
+       if (need_v4 && inet_pton(AF_INET, (void *)s, a-4) <= 0) return 0;
        return 1;
 }