/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ This is free and unencumbered software released into the public domain. │
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│ distribute this software, either in source code form or as a compiled │
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│ successors. We intend this dedication to be an overt act of │
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│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │
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╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/dns/servicestxt.h"
#include "libc/calls/calls.h"
#include "libc/dns/dns.h"
#include "libc/dns/ent.h"
#include "libc/str/str.h"
#include "libc/testlib/testlib.h"
char testlib_enable_tmp_setup_teardown;
void SetUp() {
int fd;
const char* sample = "\
# skip comment string\n\
chargen 19/tcp ttytst source\n\
chargen 19/udp ttytst source\n\
ssh 22/tcp # SSH Remote Login Protocol";
ASSERT_NE(-1, (fd = creat("services", 0755)));
ASSERT_NE(-1, write(fd, sample, strlen(sample)));
ASSERT_NE(-1, close(fd));
}
TEST(LookupServicesByPort, GetNameWhenPortCorrect) {
char name[8]; /* service names are of length 3 */
char eitherproto[8]; /* protocol names are of length 3 */
char proto1[] = "tcp";
char proto2[] = "udp";
char* localproto;
strcpy(eitherproto, "");
strcpy(name, "");
localproto = eitherproto;
ASSERT_EQ(-1, /* non existent port */
LookupServicesByPort(965, localproto, sizeof(eitherproto), name,
sizeof(name), "services"));
ASSERT_EQ('\0', localproto[0]);
localproto = eitherproto;
ASSERT_EQ(-1, /* port in network byte order */
LookupServicesByPort(htons(22), localproto, sizeof(eitherproto),
name, sizeof(name), "services"));
ASSERT_EQ('\0', localproto[0]);
localproto = proto2;
ASSERT_EQ(-1, /* port ok but wrong protocol */
LookupServicesByPort(22, localproto, sizeof(proto2), name,
sizeof(name), "services"));
ASSERT_STREQ(proto2, "udp");
localproto = proto1;
ASSERT_EQ(
-1, /* protocol is non-NULL/length must be nonzero */
LookupServicesByPort(22, localproto, 0, name, sizeof(name), "services"));
ASSERT_STREQ(proto1, "tcp");
localproto = proto1;
ASSERT_EQ(-1, /* sizeof(name) insufficient, memccpy failure */
LookupServicesByPort(22, localproto, sizeof(proto1), name, 1,
"services"));
ASSERT_STREQ(proto1, "tcp");
ASSERT_STREQ(name, ""); /* cleaned up after memccpy failed */
localproto = eitherproto;
ASSERT_EQ(
-1, /* sizeof(proto) insufficient, memccpy failure */
LookupServicesByPort(22, localproto, 1, name, sizeof(name), "services"));
ASSERT_STREQ(eitherproto, ""); /* cleaned up after memccpy failed */
localproto = proto1;
ASSERT_EQ(0, LookupServicesByPort(22, localproto, sizeof(proto1), name,
sizeof(name), "services"));
ASSERT_STREQ(name, "ssh");
ASSERT_STREQ(proto1, "tcp");
localproto = proto2;
ASSERT_EQ(0, LookupServicesByPort(19, localproto, sizeof(proto2), name,
sizeof(name), "services"));
ASSERT_STREQ(name, "chargen");
ASSERT_STREQ(proto2, "udp");
localproto = eitherproto;
ASSERT_EQ(0, /* pick first matching protocol */
LookupServicesByPort(19, localproto, sizeof(eitherproto), name,
sizeof(name), "services"));
ASSERT_STREQ(name, "chargen");
ASSERT_NE('\0', localproto[0]); /* buffer filled during the call */
ASSERT_STREQ(eitherproto, "tcp");
}
TEST(LookupServicesByName, GetPortWhenNameOrAlias) {
char name[8]; /* service names are of length 3 */
char eitherproto[8]; /* protocol names are of length 3 */
char proto1[] = "tcp";
char proto2[] = "udp";
char* localproto;
strcpy(eitherproto, "");
strcpy(name, "");
localproto = eitherproto;
ASSERT_EQ(-1, /* non-existent name */
LookupServicesByName("http", localproto, sizeof(eitherproto), name,
sizeof(name), "services"));
ASSERT_EQ('\0', localproto[0]);
localproto = proto2;
ASSERT_EQ(-1, /* name exists but wrong protocol */
LookupServicesByName("ssh", localproto, sizeof(proto2), name,
sizeof(name), "services"));
ASSERT_STREQ(proto2, "udp");
localproto = proto2;
ASSERT_EQ(-1, /* protocol is non-NULL/length must be nonzero */
LookupServicesByName("ssh", localproto, sizeof(proto2), name,
sizeof(name), "services"));
ASSERT_STREQ(proto2, "udp");
localproto = proto1;
ASSERT_EQ(-1, /* sizeof(name) insufficient, memccpy failure */
LookupServicesByName("ssh", localproto, sizeof(proto1), name, 1,
"services"));
ASSERT_STREQ(proto1, "tcp");
ASSERT_STREQ(name, ""); /* cleaned up after memccpy failed */
localproto = eitherproto;
ASSERT_EQ(-1, /* sizeof(proto) insufficient, memccpy failure */
LookupServicesByName("ssh", localproto, 1, name, sizeof(name),
"services"));
ASSERT_STREQ(eitherproto, ""); /* cleaned up after memccpy failed */
localproto = proto1;
ASSERT_EQ(22, LookupServicesByName("ssh", localproto, sizeof(proto1), name,
sizeof(name), "services"));
ASSERT_STREQ(name, "ssh"); /* official name written to buffer */
ASSERT_STREQ(proto1, "tcp");
localproto = proto2;
ASSERT_EQ(19, /* works if alias provided */
LookupServicesByName("ttytst", localproto, sizeof(proto2), name,
sizeof(name), "services"));
ASSERT_STREQ(name, "chargen"); /* official name written to buffer */
localproto = proto2;
ASSERT_EQ(19, /* can get port returned without official name */
LookupServicesByName("ttytst", localproto, sizeof(proto2), NULL, 0,
"services"));
localproto = eitherproto;
ASSERT_EQ(19, /* pick first matching protocol */
LookupServicesByName("source", localproto, sizeof(eitherproto),
name, sizeof(name), "services"));
ASSERT_STREQ(name, "chargen");
ASSERT_STREQ(localproto, "tcp");
}