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authorLennart Poettering <lennart@poettering.net>2007-04-12 23:40:57 +0000
committerLennart Poettering <lennart@poettering.net>2007-04-12 23:40:57 +0000
commit76827819636d9a2d66a9e2ad042aaed1fbf952db (patch)
tree8f4fa84a95d8e66420efa1838ae5d9459ba96c30
parent2bbdbf1155cca40d5c89ef4fcd4db40f655b0a93 (diff)
add a regression test for #84 contributed by tedp. (closes #84)
git-svn-id: file:///home/lennart/svn/public/avahi/trunk@1420 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe
-rw-r--r--avahi-core/Makefile.am11
-rw-r--r--avahi-core/dns-spin-test.c124
2 files changed, 135 insertions, 0 deletions
diff --git a/avahi-core/Makefile.am b/avahi-core/Makefile.am
index cb2d8f9..6e1d992 100644
--- a/avahi-core/Makefile.am
+++ b/avahi-core/Makefile.am
@@ -41,10 +41,16 @@ noinst_PROGRAMS = \
conformance-test \
avahi-reflector \
dns-test \
+ dns-spin-test \
timeeventq-test \
hashmap-test \
querier-test \
update-test
+
+TESTS = \
+ dns-spin-test \
+ dns-test \
+ hashmap-test
endif
libavahi_core_la_SOURCES = \
@@ -138,6 +144,11 @@ dns_test_SOURCES = \
dns_test_CFLAGS = $(AM_CFLAGS)
dns_test_LDADD = $(AM_LDADD) ../avahi-common/libavahi-common.la
+dns_spin_test_SOURCES = \
+ dns-spin-test.c
+dns_spin_test_CFLAGS = $(AM_CFLAGS)
+dns_spin_test_LDADD = $(AM_LDADD) libavahi-core.la
+
timeeventq_test_SOURCES = \
timeeventq-test.c \
timeeventq.h timeeventq.c \
diff --git a/avahi-core/dns-spin-test.c b/avahi-core/dns-spin-test.c
new file mode 100644
index 0000000..d93e508
--- /dev/null
+++ b/avahi-core/dns-spin-test.c
@@ -0,0 +1,124 @@
+/* $Id$ */
+
+/***
+ This file is part of avahi.
+
+ avahi is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ avahi is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
+ Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with avahi; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+/* Regression test for Avahi bug #84.
+ * This program tests whether the avahi_dns_packet_consume_name function
+ * returns (rather than spinning forever). For a function as simple as
+ * avahi_dns_packet_consume_name, we assume that 1 second of CPU time ≈ forever
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <string.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <sys/time.h>
+
+#include "dns.h"
+
+#define MAX_CPU_SECONDS 1
+
+#define TEST_NAME "dns-spin-test"
+
+static void fail(const char *fmt, ...) __attribute__((format(printf, 1, 2), noreturn));
+static void unresolved(const char *fmt, ...) __attribute__((format(printf, 1, 2), noreturn));
+static void stdlib_fail(const char *msg) __attribute__((noreturn));
+static void handle(int sig) __attribute__((noreturn));
+
+void stdlib_fail(const char *msg) {
+ perror(msg);
+
+ printf("UNRESOLVED: " TEST_NAME " (stdlib failure)\n");
+
+ exit(77);
+}
+
+void unresolved(const char *fmt, ...) {
+ va_list ap;
+
+ printf("UNRESOLVED: " TEST_NAME ": ");
+ va_start(ap, fmt);
+ vprintf(fmt, ap);
+ va_end(ap);
+ printf("\n");
+
+ exit(77);
+}
+
+void fail(const char *fmt, ...) {
+ va_list ap;
+
+ va_start(ap, fmt);
+ vprintf(fmt, ap);
+ va_end(ap);
+ printf("\n");
+
+ exit(EXIT_FAILURE);
+}
+
+void handle(AVAHI_GCC_UNUSED int sig) {
+ fail("Interrupted after %d second of CPU time", MAX_CPU_SECONDS);
+}
+
+#define TRY_EXCEPT(cmd, badresult) \
+ do { \
+ if ((cmd) == (badresult)) \
+ unresolved("%s returned %s", #cmd, #badresult); \
+ } while (0)
+
+int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char *argv[]) {
+ struct itimerval itval;
+ AvahiDnsPacket *packet;
+ char name[512];
+ int ret;
+ uint8_t badrr[] = {
+ 0xC0, AVAHI_DNS_PACKET_HEADER_SIZE, /* self-referential QNAME pointer */
+ 0, 1, /* QTYPE A (host addr) */
+ 0, 1, /* QCLASS IN (internet/ipv4) */
+ };
+
+ if (signal(SIGVTALRM, handle) == SIG_ERR)
+ stdlib_fail("signal(SIGVTALRM)");
+
+ memset(&itval, 0, sizeof(itval));
+ itval.it_value.tv_sec = MAX_CPU_SECONDS;
+
+ if (setitimer(ITIMER_VIRTUAL, &itval, NULL) == -1)
+ stdlib_fail("setitimer()");
+
+ TRY_EXCEPT(packet = avahi_dns_packet_new_query(512), NULL);
+ TRY_EXCEPT(avahi_dns_packet_append_bytes(packet, badrr, sizeof(badrr)), NULL);
+
+ /* This is expected to fail (if it returns) */
+ ret = avahi_dns_packet_consume_name(packet, name, sizeof(name));
+
+ if (ret != -1)
+ fail("avahi_dns_packet_consume_name() returned %d; -1 was expected", ret);
+
+ return EXIT_SUCCESS;
+}
+
+/* vim:ts=4:sw=4:et
+ */