#include "clar_libgit2.h"
#include "posix.h"
#include "path.h"
#include "git2/sys/repository.h"
void cl_git_report_failure(
int error, int expected, const char *file, int line, const char *fncall)
{
char msg[4096];
const git_error *last = giterr_last();
if (expected)
p_snprintf(msg, 4096, "error %d (expected %d) - %s",
error, expected, last ? last->message : "<no message>");
else if (error || last)
p_snprintf(msg, 4096, "error %d - %s",
error, last ? last->message : "<no message>");
else
p_snprintf(msg, 4096, "no error, expected non-zero return");
clar__assert(0, file, line, fncall, msg, 1);
}
void cl_git_mkfile(const char *filename, const char *content)
{
int fd;
fd = p_creat(filename, 0666);
cl_assert(fd != -1);
if (content) {
cl_must_pass(p_write(fd, content, strlen(content)));
} else {
cl_must_pass(p_write(fd, filename, strlen(filename)));
cl_must_pass(p_write(fd, "\n", 1));
}
cl_must_pass(p_close(fd));
}
void cl_git_write2file(
const char *path, const char *content, size_t content_len,
int flags, unsigned int mode)
{
int fd;
cl_assert(path && content);
cl_assert((fd = p_open(path, flags, mode)) >= 0);
if (!content_len)
content_len = strlen(content);
cl_must_pass(p_write(fd, content, content_len));
cl_must_pass(p_close(fd));
}
void cl_git_append2file(const char *path, const char *content)
{
cl_git_write2file(path, content, 0, O_WRONLY | O_CREAT | O_APPEND, 0644);
}
void cl_git_rewritefile(const char *path, const char *content)
{
cl_git_write2file(path, content, 0, O_WRONLY | O_CREAT | O_TRUNC, 0644);
}
void cl_git_rmfile(const char *filename)
{
cl_must_pass(p_unlink(filename));
}
char *cl_getenv(const char *name)
{
git_buf out = GIT_BUF_INIT;
int error = git__getenv(&out, name);
cl_assert(error >= 0 || error == GIT_ENOTFOUND);
if (error == GIT_ENOTFOUND)
return NULL;
if (out.size == 0) {
char *dup = git__strdup("");
cl_assert(dup);
return dup;
}
return git_buf_detach(&out);
}
bool cl_is_env_set(const char *name)
{
char *env = cl_getenv(name);
bool result = (env != NULL);
git__free(env);
return result;
}
#ifdef GIT_WIN32
#include "win32/utf-conv.h"
int cl_setenv(const char *name, const char *value)
{
wchar_t *wide_name, *wide_value = NULL;
cl_assert(git__utf8_to_16_alloc(&wide_name, name) >= 0);
if (value) {
cl_assert(git__utf8_to_16_alloc(&wide_value, value) >= 0);
cl_assert(SetEnvironmentVariableW(wide_name, wide_value));
} else {
/* Windows XP returns 0 (failed) when passing NULL for lpValue when
* lpName does not exist in the environment block. This behavior
* seems to have changed in later versions. Don't check the return value
* of SetEnvironmentVariable when passing NULL for lpValue. */
SetEnvironmentVariableW(wide_name, NULL);
}
git__free(wide_name);
git__free(wide_value);
return 0;
}
/* This function performs retries on calls to MoveFile in order
* to provide enhanced reliability in the face of antivirus
* agents that may be scanning the source (or in the case that
* the source is a directory, a child of the source). */
int cl_rename(const char *source, const char *dest)
{
git_win32_path source_utf16;
git_win32_path dest_utf16;
unsigned retries = 1;
cl_assert(git_win32_path_from_utf8(source_utf16, source) >= 0);
cl_assert(git_win32_path_from_utf8(dest_utf16, dest) >= 0);
while (!MoveFileW(source_utf16, dest_utf16)) {
/* Only retry if the error is ERROR_ACCESS_DENIED;
* this may indicate that an antivirus agent is
* preventing the rename from source to target */
if (retries > 5 ||
ERROR_ACCESS_DENIED != GetLastError())
return -1;
/* With 5 retries and a coefficient of 10ms, the maximum
* delay here is 550 ms */
Sleep(10 * retries * retries);
retries++;
}
return 0;
}
#else
#include <stdlib.h>
int cl_setenv(const char *name, const char *value)
{
return (value == NULL) ? unsetenv(name) : setenv(name, value, 1);
}
int cl_rename(const char *source, const char *dest)
{
return p_rename(source, dest);
}
#endif
static const char *_cl_sandbox = NULL;
static git_repository *_cl_repo = NULL;
git_repository *cl_git_sandbox_init(const char *sandbox)
{
/* Get the name of the sandbox folder which will be created */
const char *basename = cl_fixture_basename(sandbox);
/* Copy the whole sandbox folder from our fixtures to our test sandbox
* area. After this it can be accessed with `./sandbox`
*/
cl_fixture_sandbox(sandbox);
_cl_sandbox = sandbox;
cl_git_pass(p_chdir(basename));
/* If this is not a bare repo, then rename `sandbox/.gitted` to
* `sandbox/.git` which must be done since we cannot store a folder
* named `.git` inside the fixtures folder of our libgit2 repo.
*/
if (p_access(".gitted", F_OK) == 0)
cl_git_pass(cl_rename(".gitted", ".git"));
/* If we have `gitattributes`, rename to `.gitattributes`. This may
* be necessary if we don't want the attributes to be applied in the
* libgit2 repo, but just during testing.
*/
if (p_access("gitattributes", F_OK) == 0)
cl_git_pass(cl_rename("gitattributes", ".gitattributes"));
/* As with `gitattributes`, we may need `gitignore` just for testing. */
if (p_access("gitignore", F_OK) == 0)
cl_git_pass(cl_rename("gitignore", ".gitignore"));
cl_git_pass(p_chdir(".."));
/* Now open the sandbox repository and make it available for tests */
cl_git_pass(git_repository_open(&_cl_repo, basename));
/* Adjust configs after copying to new filesystem */
cl_git_pass(git_repository_reinit_filesystem(_cl_repo, 0));
return _cl_repo;
}
git_repository *cl_git_sandbox_init_new(const char *sandbox)
{
cl_git_pass(git_repository_init(&_cl_repo, sandbox, false));
_cl_sandbox = sandbox;
return _cl_repo;
}
git_repository *cl_git_sandbox_reopen(void)
{
if (_cl_repo) {
git_repository_free(_cl_repo);
_cl_repo = NULL;
cl_git_pass(git_repository_open(
&_cl_repo, cl_fixture_basename(_cl_sandbox)));
}
return _cl_repo;
}
void cl_git_sandbox_cleanup(void)
{
if (_cl_repo) {
git_repository_free(_cl_repo);
_cl_repo = NULL;
}
if (_cl_sandbox) {
cl_fixture_cleanup(_cl_sandbox);
_cl_sandbox = NULL;
}
}
bool cl_toggle_filemode(const char *filename)
{
struct stat st1, st2;
cl_must_pass(p_stat(filename, &st1));
cl_must_pass(p_chmod(filename, st1.st_mode ^ 0100));
cl_must_pass(p_stat(filename, &st2));
return (st1.st_mode != st2.st_mode);
}
bool cl_is_chmod_supported(void)
{
static int _is_supported = -1;
if (_is_supported < 0) {
cl_git_mkfile("filemode.t", "Test if filemode can be modified");
_is_supported = cl_toggle_filemode("filemode.t");
cl_must_pass(p_unlink("filemode.t"));
}
return _is_supported;
}
const char* cl_git_fixture_url(const char *fixturename)
{
return cl_git_path_url(cl_fixture(fixturename));
}
const char* cl_git_path_url(const char *path)
{
static char url[4096];
const char *in_buf;
git_buf path_buf = GIT_BUF_INIT;
git_buf url_buf = GIT_BUF_INIT;
cl_git_pass(git_path_prettify_dir(&path_buf, path, NULL));
cl_git_pass(git_buf_puts(&url_buf, "file://"));
#ifdef GIT_WIN32
/*
* A FILE uri matches the following format: file://[host]/path
* where "host" can be empty and "path" is an absolute path to the resource.
*
* In this test, no hostname is used, but we have to ensure the leading triple slashes:
*
* *nix: file:///usr/home/...
* Windows: file:///C:/Users/...
*/
cl_git_pass(git_buf_putc(&url_buf, '/'));
#endif
in_buf = git_buf_cstr(&path_buf);
/*
* A very hacky Url encoding that only takes care of escaping the spaces
*/
while (*in_buf) {
if (*in_buf == ' ')
cl_git_pass(git_buf_puts(&url_buf, "%20"));
else
cl_git_pass(git_buf_putc(&url_buf, *in_buf));
in_buf++;
}
cl_assert(url_buf.size < 4096);
strncpy(url, git_buf_cstr(&url_buf), 4096);
git_buf_dispose(&url_buf);
git_buf_dispose(&path_buf);
return url;
}
typedef struct {
const char *filename;
size_t filename_len;
} remove_data;
static int remove_placeholders_recurs(void *_data, git_buf *path)
{
remove_data *data = (remove_data *)_data;
size_t pathlen;
if (git_path_isdir(path->ptr) == true)
return git_path_direach(path, 0, remove_placeholders_recurs, data);
pathlen = path->size;
if (pathlen < data->filename_len)
return 0;
/* if path ends in '/'+filename (or equals filename) */
if (!strcmp(data->filename, path->ptr + pathlen - data->filename_len) &&
(pathlen == data->filename_len ||
path->ptr[pathlen - data->filename_len - 1] == '/'))
return p_unlink(path->ptr);
return 0;
}
int cl_git_remove_placeholders(const char *directory_path, const char *filename)
{
int error;
remove_data data;
git_buf buffer = GIT_BUF_INIT;
if (git_path_isdir(directory_path) == false)
return -1;
if (git_buf_sets(&buffer, directory_path) < 0)
return -1;
data.filename = filename;
data.filename_len = strlen(filename);
error = remove_placeholders_recurs(&data, &buffer);
git_buf_dispose(&buffer);
return error;
}
#define CL_COMMIT_NAME "Libgit2 Tester"
#define CL_COMMIT_EMAIL "libgit2-test@github.com"
#define CL_COMMIT_MSG "Test commit of tree "
void cl_repo_commit_from_index(
git_oid *out,
git_repository *repo,
git_signature *sig,
git_time_t time,
const char *msg)
{
git_index *index;
git_oid commit_id, tree_id;
git_object *parent = NULL;
git_reference *ref = NULL;
git_tree *tree = NULL;
char buf[128];
int free_sig = (sig == NULL);
/* it is fine if looking up HEAD fails - we make this the first commit */
git_revparse_ext(&parent, &ref, repo, "HEAD");
/* write the index content as a tree */
cl_git_pass(git_repository_index(&index, repo));
cl_git_pass(git_index_write_tree(&tree_id, index));
cl_git_pass(git_index_write(index));
git_index_free(index);
cl_git_pass(git_tree_lookup(&tree, repo, &tree_id));
if (sig)
cl_assert(sig->name && sig->email);
else if (!time)
cl_git_pass(git_signature_now(&sig, CL_COMMIT_NAME, CL_COMMIT_EMAIL));
else
cl_git_pass(git_signature_new(
&sig, CL_COMMIT_NAME, CL_COMMIT_EMAIL, time, 0));
if (!msg) {
strcpy(buf, CL_COMMIT_MSG);
git_oid_tostr(buf + strlen(CL_COMMIT_MSG),
sizeof(buf) - strlen(CL_COMMIT_MSG), &tree_id);
msg = buf;
}
cl_git_pass(git_commit_create_v(
&commit_id, repo, ref ? git_reference_name(ref) : "HEAD",
sig, sig, NULL, msg, tree, parent ? 1 : 0, parent));
if (out)
git_oid_cpy(out, &commit_id);
git_object_free(parent);
git_reference_free(ref);
if (free_sig)
git_signature_free(sig);
git_tree_free(tree);
}
void cl_repo_set_bool(git_repository *repo, const char *cfg, int value)
{
git_config *config;
cl_git_pass(git_repository_config(&config, repo));
cl_git_pass(git_config_set_bool(config, cfg, value != 0));
git_config_free(config);
}
int cl_repo_get_bool(git_repository *repo, const char *cfg)
{
int val = 0;
git_config *config;
cl_git_pass(git_repository_config(&config, repo));
if (git_config_get_bool(&val, config, cfg) < 0)
giterr_clear();
git_config_free(config);
return val;
}
void cl_repo_set_string(git_repository *repo, const char *cfg, const char *value)
{
git_config *config;
cl_git_pass(git_repository_config(&config, repo));
cl_git_pass(git_config_set_string(config, cfg, value));
git_config_free(config);
}
/* this is essentially the code from git__unescape modified slightly */
static size_t strip_cr_from_buf(char *start, size_t len)
{
char *scan, *trail, *end = start + len;
for (scan = trail = start; scan < end; trail++, scan++) {
while (*scan == '\r')
scan++; /* skip '\r' */
if (trail != scan)
*trail = *scan;
}
*trail = '\0';
return (trail - start);
}
void clar__assert_equal_file(
const char *expected_data,
size_t expected_bytes,
int ignore_cr,
const char *path,
const char *file,
int line)
{
char buf[4000];
ssize_t bytes, total_bytes = 0;
int fd = p_open(path, O_RDONLY | O_BINARY);
cl_assert(fd >= 0);
if (expected_data && !expected_bytes)
expected_bytes = strlen(expected_data);
while ((bytes = p_read(fd, buf, sizeof(buf))) != 0) {
clar__assert(
bytes > 0, file, line, "error reading from file", path, 1);
if (ignore_cr)
bytes = strip_cr_from_buf(buf, bytes);
if (memcmp(expected_data, buf, bytes) != 0) {
int pos;
for (pos = 0; pos < bytes && expected_data[pos] == buf[pos]; ++pos)
/* find differing byte offset */;
p_snprintf(
buf, sizeof(buf), "file content mismatch at byte %"PRIdZ,
(ssize_t)(total_bytes + pos));
p_close(fd);
clar__fail(file, line, path, buf, 1);
}
expected_data += bytes;
total_bytes += bytes;
}
p_close(fd);
clar__assert(!bytes, file, line, "error reading from file", path, 1);
clar__assert_equal(file, line, "mismatched file length", 1, "%"PRIuZ,
(size_t)expected_bytes, (size_t)total_bytes);
}
static char *_cl_restore_home = NULL;
void cl_fake_home_cleanup(void *payload)
{
char *restore = _cl_restore_home;
_cl_restore_home = NULL;
GIT_UNUSED(payload);
if (restore) {
cl_git_pass(git_libgit2_opts(
GIT_OPT_SET_SEARCH_PATH, GIT_CONFIG_LEVEL_GLOBAL, restore));
git__free(restore);
}
}
void cl_fake_home(void)
{
git_buf path = GIT_BUF_INIT;
cl_git_pass(git_libgit2_opts(
GIT_OPT_GET_SEARCH_PATH, GIT_CONFIG_LEVEL_GLOBAL, &path));
_cl_restore_home = git_buf_detach(&path);
cl_set_cleanup(cl_fake_home_cleanup, NULL);
if (!git_path_exists("home"))
cl_must_pass(p_mkdir("home", 0777));
cl_git_pass(git_path_prettify(&path, "home", NULL));
cl_git_pass(git_libgit2_opts(
GIT_OPT_SET_SEARCH_PATH, GIT_CONFIG_LEVEL_GLOBAL, path.ptr));
git_buf_dispose(&path);
}
void cl_sandbox_set_search_path_defaults(void)
{
git_buf path = GIT_BUF_INIT;
git_buf_joinpath(&path, clar_sandbox_path(), "__config");
if (!git_path_exists(path.ptr))
cl_must_pass(p_mkdir(path.ptr, 0777));
git_libgit2_opts(
GIT_OPT_SET_SEARCH_PATH, GIT_CONFIG_LEVEL_GLOBAL, path.ptr);
git_libgit2_opts(
GIT_OPT_SET_SEARCH_PATH, GIT_CONFIG_LEVEL_XDG, path.ptr);
git_libgit2_opts(
GIT_OPT_SET_SEARCH_PATH, GIT_CONFIG_LEVEL_SYSTEM, path.ptr);
git_libgit2_opts(
GIT_OPT_SET_SEARCH_PATH, GIT_CONFIG_LEVEL_PROGRAMDATA, path.ptr);
git_buf_dispose(&path);
}
#ifdef GIT_WIN32
bool cl_sandbox_supports_8dot3(void)
{
git_buf longpath = GIT_BUF_INIT;
char *shortname;
bool supported;
cl_git_pass(
git_buf_joinpath(&longpath, clar_sandbox_path(), "longer_than_8dot3"));
cl_git_write2file(longpath.ptr, "", 0, O_RDWR|O_CREAT, 0666);
shortname = git_win32_path_8dot3_name(longpath.ptr);
supported = (shortname != NULL);
git__free(shortname);
git_buf_dispose(&longpath);
return supported;
}
#endif
