diff options
| -rw-r--r-- | ChangeLog | 3 | ||||
| -rw-r--r-- | resolv/ns_print.c | 49 |
2 files changed, 48 insertions, 4 deletions
diff --git a/ChangeLog b/ChangeLog index df4c9c33c6..4c7aa2202b 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,8 @@ 2007-09-23 Ulrich Drepper <drepper@redhat.com> + * resolv/ns_print.c (ns_sprintrrf): Handle ns_t_a6 and ns_t_opt. + Provide better error message in case the type is unknown. + [BZ #4963] * wcsmbs/wcsnlen.c: Don't reference before checking the length. * string/stratcliff.c: Make usable to test wide char functions. diff --git a/resolv/ns_print.c b/resolv/ns_print.c index 12b2e67ea6..b0b7a1046e 100644 --- a/resolv/ns_print.c +++ b/resolv/ns_print.c @@ -112,6 +112,7 @@ ns_sprintrrf(const u_char *msg, size_t msglen, const char *comment; char tmp[100]; + char errbuf[40]; int len, x; /* @@ -174,11 +175,11 @@ ns_sprintrrf(const u_char *msg, size_t msglen, rdata += len; T(addstr(" ", 1, &buf, &buflen)); - + /* Second word, optional in ISDN records. */ if (type == ns_t_isdn && rdata == edata) break; - + T(len = charstr(rdata, edata, &buf, &buflen)); if (len == 0) goto formerr; @@ -596,7 +597,7 @@ ns_sprintrrf(const u_char *msg, size_t msglen, } else leader = " "; - + for (n = 0; n < len; n += 48) { T(addstr(leader, strlen(leader), &buf, &buflen)); @@ -625,8 +626,48 @@ ns_sprintrrf(const u_char *msg, size_t msglen, break; } + case ns_t_a6: { + struct in6_addr a; + int pbyte, pbit; + + /* prefix length */ + if (rdlen == 0U) goto formerr; + len = SPRINTF((tmp, "%d ", *rdata)); + T(addstr(tmp, len, &buf, &buflen)); + pbit = *rdata; + if (pbit > 128) goto formerr; + pbyte = (pbit & ~7) / 8; + rdata++; + + /* address suffix: provided only when prefix len != 128 */ + if (pbit < 128) { + if (rdata + pbyte >= edata) goto formerr; + memset(&a, 0, sizeof(a)); + memcpy(&a.s6_addr[pbyte], rdata, sizeof(a) - pbyte); + (void) inet_ntop(AF_INET6, &a, buf, buflen); + addlen(strlen(buf), &buf, &buflen); + rdata += sizeof(a) - pbyte; + } + + /* prefix name: provided only when prefix len > 0 */ + if (pbit == 0) + break; + if (rdata >= edata) goto formerr; + T(addstr(" ", 1, &buf, &buflen)); + T(addname(msg, msglen, &rdata, origin, &buf, &buflen)); + + break; + } + + case ns_t_opt: { + len = SPRINTF((tmp, "%u bytes", class)); + T(addstr(tmp, len, &buf, &buflen)); + break; + } + default: - comment = "unknown RR type"; + snprintf (errbuf, sizeof (errbuf), "unknown RR type %d", type); + comment = errbuf; goto hexify; } return (buf - obuf); |