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/*
* Copyright (C) 2016 Red Hat, Inc.
*
* This library 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.
*
* This library 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 this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include "virmock.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/file.h>
#include <sys/stat.h>
#include "virsocket.h"
#include "configmake.h"
#include "virfile.h"
static int (*real_open)(const char *path, int flags, ...);
static FILE *(*real_fopen)(const char *path, const char *mode);
static int (*real_access)(const char *path, int mode);
static int (*real_connect)(int fd, const struct sockaddr *addr, socklen_t addrlen);
static const char *progname;
const char *output;
#define VIR_FILE_ACCESS_DEFAULT abs_builddir "/test_file_access.txt"
static void init_syms(void)
{
if (real_open)
return;
VIR_MOCK_REAL_INIT(open);
VIR_MOCK_REAL_INIT(fopen);
VIR_MOCK_REAL_INIT(access);
VIR_MOCK_REAL_INIT(connect);
}
static void
printFile(const char *file,
const char *func)
{
FILE *fp;
const char *testname = getenv("VIR_TEST_MOCK_TESTNAME");
if (!progname) {
progname = getenv("VIR_TEST_MOCK_PROGNAME");
if (!progname)
return;
output = getenv("VIR_TEST_FILE_ACCESS_OUTPUT");
if (!output)
output = VIR_FILE_ACCESS_DEFAULT;
}
if (!(fp = real_fopen(output, "w"))) {
fprintf(stderr, "Unable to open %s: %s\n", output, g_strerror(errno));
abort();
}
if (flock(fileno(fp), LOCK_EX) < 0) {
fprintf(stderr, "Unable to lock %s: %s\n", output, g_strerror(errno));
fclose(fp);
abort();
}
/* Now append the following line into the output file:
* $file: $progname: $func: $testname */
fprintf(fp, "%s: %s: %s", file, func, progname);
if (testname)
fprintf(fp, ": %s", testname);
fputc('\n', fp);
flock(fileno(fp), LOCK_UN);
fclose(fp);
}
#define CHECK_PATH(path) \
checkPath(path, __FUNCTION__)
static void
checkPath(const char *path,
const char *func)
{
g_autofree char *fullPath = NULL;
g_autofree char *relPath = NULL;
g_autofree char *crippledPath = NULL;
if (!g_path_is_absolute(path))
relPath = g_strdup_printf("./%s", path);
/* Le sigh. virFileCanonicalizePath() expects @path to exist, otherwise
* it will return an error. So if we are called over an non-existent
* file, this could return an error. In that case do our best and hope
* we will catch possible errors. */
if ((fullPath = virFileCanonicalizePath(relPath ? relPath : path))) {
path = fullPath;
} else {
/* Yeah, our worst nightmares just became true. Path does
* not exist. Cut off the last component and retry. */
crippledPath = g_strdup(relPath ? relPath : path);
virFileRemoveLastComponent(crippledPath);
if ((fullPath = virFileCanonicalizePath(crippledPath)))
path = fullPath;
}
if (!STRPREFIX(path, abs_top_srcdir) &&
!STRPREFIX(path, abs_top_builddir)) {
printFile(path, func);
}
return;
}
int open(const char *path, int flags, ...)
{
int ret;
init_syms();
CHECK_PATH(path);
if (flags & O_CREAT) {
va_list ap;
mode_t mode;
va_start(ap, flags);
mode = (mode_t) va_arg(ap, int);
va_end(ap);
ret = real_open(path, flags, mode);
} else {
ret = real_open(path, flags);
}
return ret;
}
FILE *fopen(const char *path, const char *mode)
{
init_syms();
CHECK_PATH(path);
return real_fopen(path, mode);
}
int access(const char *path, int mode)
{
init_syms();
CHECK_PATH(path);
return real_access(path, mode);
}
#define VIR_MOCK_STAT_HOOK \
do { \
init_syms(); \
checkPath(path, "stat"); \
} while (0)
#include "virmockstathelpers.c"
static int virMockStatRedirect(const char *path G_GNUC_UNUSED, char **newpath G_GNUC_UNUSED)
{
return 0;
}
int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen)
{
init_syms();
#ifndef WIN32
if (addrlen == sizeof(struct sockaddr_un)) {
struct sockaddr_un *tmp = (struct sockaddr_un *) addr;
if (tmp->sun_family == AF_UNIX)
CHECK_PATH(tmp->sun_path);
}
#endif
return real_connect(sockfd, addr, addrlen);
}
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