dirmngr: dns: Fix allocation of string buffer in stack.

* dirmngr/dns.h (dns_strsection, dns_strclass)
(dns_strtype): Change APIs.
* dirmngr/dns.c (dns_p_lines): Use __dst for dns_strsection.
(dns_rr_print): Use __dst for dns_strclass and dns_strtype.
(dns_trace_dump): Likewise.
(dns_ai_print): Use __dst for dns_strtype.
(dns_strsection): Add an argument __dst for storage.
(dns_strclass, dns_strtype): Likewise.
(parse_packet): Use __dst for dns_strsection.
(send_query): Use __dst for dns_strtype.
(isection): Use __dst for dns_strsection.
(iclass): Use __dst for dns_strclass.
(itype): Use __dst for dns_strtype.

GnuPG-bug-id: 4934
Reported-by: Tomas Mraz
Fixes-commit: 455ef62d29a112de05897139716265d07e4c6ae3
Signed-off-by: NIIBE Yutaka <[email protected]>

1 files changed, 3 insertions, 3 deletions

diff --git a/dirmngr/dns.h b/dirmngr/dns.h
index 024d6dcc8..1f647e101 100644
--- a/dirmngr/dns.h
+++ b/dirmngr/dns.h
@@ -272,15 +272,15 @@ enum dns_rcode {
  */
 #define DNS_STRMAXLEN 47 /* "QUESTION|ANSWER|AUTHORITY|ADDITIONAL" */
 
-DNS_PUBLIC const char *dns_strsection(enum dns_section);
+DNS_PUBLIC const char *dns_strsection(enum dns_section, char *);
 
 DNS_PUBLIC enum dns_section dns_isection(const char *);
 
-DNS_PUBLIC const char *dns_strclass(enum dns_class);
+DNS_PUBLIC const char *dns_strclass(enum dns_class, char *);
 
 DNS_PUBLIC enum dns_class dns_iclass(const char *);
 
-DNS_PUBLIC const char *dns_strtype(enum dns_type);
+DNS_PUBLIC const char *dns_strtype(enum dns_type, char *);
 
 DNS_PUBLIC enum dns_type dns_itype(const char *);