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authorDenys Vlasenko2018-04-14 23:08:23 +0200
committerDenys Vlasenko2018-04-14 23:08:23 +0200
commitcf950cd3eae0c8d1f711163ea1d99d5891f4f392 (patch)
tree7df7f0997256dc006da299eb872d66e2a0137e76
parent71e016d806f0f2c9168e9096546c15996e6a8e20 (diff)
downloadbusybox-cf950cd3eae0c8d1f711163ea1d99d5891f4f392.zip
busybox-cf950cd3eae0c8d1f711163ea1d99d5891f4f392.tar.gz
nslookup: more closely resemble output format of bind-utils-9.11.3
function old new delta nslookup_main 1880 1832 -48 parse_reply 1022 852 -170 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-218) Total: -218 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--networking/nslookup.c52
1 files changed, 17 insertions, 35 deletions
diff --git a/networking/nslookup.c b/networking/nslookup.c
index 23ab975..feeec15 100644
--- a/networking/nslookup.c
+++ b/networking/nslookup.c
@@ -326,7 +326,7 @@ struct globals {
} while (0)
static int
-parse_reply(const unsigned char *msg, size_t len, int *bb_style_counter)
+parse_reply(const unsigned char *msg, size_t len)
{
ns_msg handle;
ns_rr rr;
@@ -346,36 +346,28 @@ parse_reply(const unsigned char *msg, size_t len, int *bb_style_counter)
return -1;
}
- if (bb_style_counter && *bb_style_counter == 1)
- printf("Name: %s\n", ns_rr_name(rr));
-
rdlen = ns_rr_rdlen(rr);
switch (ns_rr_type(rr))
{
case ns_t_a:
if (rdlen != 4) {
- //fprintf(stderr, "Unexpected A record length\n");
+ dbg("unexpected A record length %d\n", rdlen);
return -1;
}
inet_ntop(AF_INET, ns_rr_rdata(rr), astr, sizeof(astr));
- if (bb_style_counter)
- printf("Address %d: %s\n", (*bb_style_counter)++, astr);
- else
- printf("Name:\t%s\nAddress: %s\n", ns_rr_name(rr), astr);
+ printf("Name:\t%s\nAddress: %s\n", ns_rr_name(rr), astr);
break;
#if ENABLE_FEATURE_IPV6
case ns_t_aaaa:
if (rdlen != 16) {
- //fprintf(stderr, "Unexpected AAAA record length\n");
+ dbg("unexpected AAAA record length %d\n", rdlen);
return -1;
}
inet_ntop(AF_INET6, ns_rr_rdata(rr), astr, sizeof(astr));
- if (bb_style_counter)
- printf("Address %d: %s\n", (*bb_style_counter)++, astr);
- else
- printf("%s\thas AAAA address %s\n", ns_rr_name(rr), astr);
+ /* bind-utils-9.11.3 uses the same format for A and AAAA answers */
+ printf("Name:\t%s\nAddress: %s\n", ns_rr_name(rr), astr);
break;
#endif
@@ -393,7 +385,8 @@ parse_reply(const unsigned char *msg, size_t len, int *bb_style_counter)
if (!format)
format = "%s\tname = %s\n";
if (ns_name_uncompress(ns_msg_base(handle), ns_msg_end(handle),
- ns_rr_rdata(rr), dname, sizeof(dname)) < 0) {
+ ns_rr_rdata(rr), dname, sizeof(dname)) < 0
+ ) {
//fprintf(stderr, "Unable to uncompress domain: %s\n", strerror(errno));
return -1;
}
@@ -407,7 +400,8 @@ parse_reply(const unsigned char *msg, size_t len, int *bb_style_counter)
}
n = ns_get16(ns_rr_rdata(rr));
if (ns_name_uncompress(ns_msg_base(handle), ns_msg_end(handle),
- ns_rr_rdata(rr) + 2, dname, sizeof(dname)) < 0) {
+ ns_rr_rdata(rr) + 2, dname, sizeof(dname)) < 0
+ ) {
//fprintf(stderr, "Cannot uncompress MX domain: %s\n", strerror(errno));
return -1;
}
@@ -429,7 +423,7 @@ parse_reply(const unsigned char *msg, size_t len, int *bb_style_counter)
case ns_t_soa:
if (rdlen < 20) {
- //fprintf(stderr, "SOA record too short\n");
+ dbg("SOA record too short:%d\n", rdlen);
return -1;
}
@@ -438,7 +432,6 @@ parse_reply(const unsigned char *msg, size_t len, int *bb_style_counter)
cp = ns_rr_rdata(rr);
n = ns_name_uncompress(ns_msg_base(handle), ns_msg_end(handle),
cp, dname, sizeof(dname));
-
if (n < 0) {
//fprintf(stderr, "Unable to uncompress domain: %s\n", strerror(errno));
return -1;
@@ -449,7 +442,6 @@ parse_reply(const unsigned char *msg, size_t len, int *bb_style_counter)
n = ns_name_uncompress(ns_msg_base(handle), ns_msg_end(handle),
cp, dname, sizeof(dname));
-
if (n < 0) {
//fprintf(stderr, "Unable to uncompress domain: %s\n", strerror(errno));
return -1;
@@ -725,7 +717,6 @@ int nslookup_main(int argc UNUSED_PARAM, char **argv)
struct query *queries;
llist_t *type_strings;
int n_queries;
- int bb_style_counter = 0;
unsigned types;
int rc;
int opts;
@@ -811,7 +802,6 @@ int nslookup_main(int argc UNUSED_PARAM, char **argv)
add_query(&queries, &n_queries, T_PTR, ptr);
}
else {
- bb_style_counter = 1;
add_query(&queries, &n_queries, T_A, *argv);
#if ENABLE_FEATURE_IPV6
add_query(&queries, &n_queries, T_AAAA, *argv);
@@ -868,7 +858,7 @@ int nslookup_main(int argc UNUSED_PARAM, char **argv)
int c;
if (opts & OPT_stats) {
- printf("Query #%d completed in %lums:\n", rc, queries[rc].latency);
+ printf("Query #%d completed in %ums:\n", rc, queries[rc].latency);
}
if (queries[rc].rcode != 0) {
@@ -878,20 +868,13 @@ int nslookup_main(int argc UNUSED_PARAM, char **argv)
}
c = 0;
-
if (queries[rc].rlen) {
HEADER *header;
- if (!bb_style_counter) {
- header = (HEADER *)queries[rc].reply;
- if (!header->aa)
- printf("Non-authoritative answer:\n");
- c = parse_reply(queries[rc].reply, queries[rc].rlen, NULL);
- }
- else {
- c = parse_reply(queries[rc].reply, queries[rc].rlen,
- &bb_style_counter);
- }
+ header = (HEADER *)queries[rc].reply;
+ if (!header->aa)
+ printf("Non-authoritative answer:\n");
+ c = parse_reply(queries[rc].reply, queries[rc].rlen);
}
if (c == 0)
@@ -899,8 +882,7 @@ int nslookup_main(int argc UNUSED_PARAM, char **argv)
else if (c < 0)
printf("*** Can't find %s: Parse error\n", queries[rc].name);
- if (!bb_style_counter)
- printf("\n");
+ bb_putchar('\n');
}
if (ENABLE_FEATURE_CLEAN_UP) {