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libisofs/test/mocked_fsrc.c

416 lines
8.7 KiB

/*
*
*
*/
#include "fsource.h"
#include "mocked_fsrc.h"
#include "error.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include <libgen.h>
#include <stdlib.h>
static
struct mock_file *path_to_node(IsoFilesystem *fs, const char *path);
struct mock_file {
struct stat info;
char *name;
void *content;
};
struct mock_fs_src
{
IsoFilesystem *fs;
char *path;
} _MockedFsFileSource;
static
const char* mfs_get_path(IsoFileSource *src)
{
struct mock_fs_src *data;
data = src->data;
return data->path;
}
static
char* mfs_get_name(IsoFileSource *src)
{
char *name, *p;
struct mock_fs_src *data;
data = src->data;
p = strdup(data->path); /* because basename() might modify its arg */
name = strdup(basename(p));
free(p);
return name;
}
static
int mfs_lstat(IsoFileSource *src, struct stat *info)
{
struct mock_fs_src *data;
struct mock_file *node;
if (src == NULL || info == NULL) {
return ISO_NULL_POINTER;
}
data = src->data;
node = path_to_node(data->fs, data->path);
if (node == NULL) {
return ISO_FILE_BAD_PATH;
}
*info = node->info;
return ISO_SUCCESS;
}
static
int mfs_stat(IsoFileSource *src, struct stat *info)
{
struct mock_fs_src *data;
struct mock_file *node;
if (src == NULL || info == NULL) {
return ISO_NULL_POINTER;
}
data = src->data;
node = path_to_node(data->fs, data->path);
if (node == NULL) {
return ISO_FILE_BAD_PATH;
}
while ( S_ISLNK(node->info.st_mode) ) {
/* the destination is stated */
node = path_to_node(data->fs, (char *)node->content);
if (node == NULL) {
return ISO_FILE_ERROR;
}
}
*info = node->info;
return ISO_SUCCESS;
}
static
int mfs_open(IsoFileSource *src)
{
// TODO not implemented
return ISO_ERROR;
}
static
int mfs_close(IsoFileSource *src)
{
// TODO not implemented
return ISO_ERROR;
}
static
int mfs_read(IsoFileSource *src, void *buf, size_t count)
{
// TODO not implemented
return ISO_ERROR;
}
static
int mfs_readdir(IsoFileSource *src, IsoFileSource **child)
{
// TODO not implemented
return ISO_ERROR;
}
static
int mfs_readlink(IsoFileSource *src, char *buf, size_t bufsiz)
{
struct mock_fs_src *data;
struct mock_file *node;
if (src == NULL || buf == NULL) {
return ISO_NULL_POINTER;
}
if (bufsiz <= 0) {
return ISO_WRONG_ARG_VALUE;
}
data = src->data;
node = path_to_node(data->fs, data->path);
if (node == NULL) {
return ISO_FILE_BAD_PATH;
}
if (!S_ISLNK(node->info.st_mode)) {
return ISO_FILE_IS_NOT_SYMLINK;
}
strncpy(buf, node->content, bufsiz);
buf[bufsiz-1] = '\0';
return ISO_SUCCESS;
}
static
IsoFilesystem* mfs_get_filesystem(IsoFileSource *src)
{
struct mock_fs_src *data;
data = src->data;
return data->fs;
}
static
void mfs_free(IsoFileSource *src)
{
struct mock_fs_src *data;
data = src->data;
free(data->path);
iso_filesystem_unref(data->fs);
free(data);
}
IsoFileSourceIface mfs_class = {
mfs_get_path,
mfs_get_name,
mfs_lstat,
mfs_stat,
mfs_open,
mfs_close,
mfs_read,
mfs_readdir,
mfs_readlink,
mfs_get_filesystem,
mfs_free
};
/**
*
* @return
* 1 success, < 0 error
*/
static
int mocked_file_source_new(IsoFilesystem *fs, const char *path,
IsoFileSource **src)
{
IsoFileSource *mocked_src;
struct mock_fs_src *data;
if (src == NULL || fs == NULL) {
return ISO_NULL_POINTER;
}
/* allocate memory */
data = malloc(sizeof(struct mock_fs_src));
if (data == NULL) {
return ISO_OUT_OF_MEM;
}
mocked_src = malloc(sizeof(IsoFileSource));
if (mocked_src == NULL) {
free(data);
return ISO_OUT_OF_MEM;
}
/* fill struct */
data->path = strdup(path);
{
/* remove trailing '/' */
int len = strlen(path);
if (len > 1) {
/* don't remove / for root! */
if (path[len-1] == '/') {
data->path[len-1] = '\0';
}
}
}
data->fs = fs;
mocked_src->refcount = 1;
mocked_src->data = data;
mocked_src->class = &mfs_class;
/* take a ref to filesystem */
iso_filesystem_ref(fs);
/* return */
*src = mocked_src;
return ISO_SUCCESS;
}
static
struct mock_file *path_to_node(IsoFilesystem *fs, const char *path)
{
struct mock_file *node;
struct mock_file *dir;
char *ptr, *brk_info, *component;
/* get the first child at the root of the volume
* that is "/" */
dir = fs->data;
node = dir;
if (!strcmp(path, "/"))
return node;
ptr = strdup(path);
/* get the first component of the path */
component = strtok_r(ptr, "/", &brk_info);
while (component) {
size_t i;
if ( !S_ISDIR(node->info.st_mode) ) {
node=NULL;
break;
}
dir = node;
node=NULL;
if (!dir->content) {
break;
}
i = 0;
while (((struct mock_file**)dir->content)[i]) {
if (!strcmp(component, ((struct mock_file**)dir->content)[i]->name)) {
node = ((struct mock_file**)dir->content)[i];
break;
}
++i;
}
/* see if a node could be found */
if (node==NULL) {
break;
}
component = strtok_r(NULL, "/", &brk_info);
}
free(ptr);
return node;
}
static
struct mock_file *add_node(IsoFilesystem *fs, const char *path,
struct stat info)
{
char *dir, *name, *ptr;
struct mock_file *node, *parent;
int i;
if (!strcmp(path, "/"))
return NULL;
dir = dirname(strdup(path));
ptr = strdup(path);
name = basename(ptr);
/*printf("Added %s to %s\n", name, dir);*/
parent = path_to_node(fs, dir);
if (!S_ISDIR(parent->info.st_mode)) {
return NULL;
}
i = 0;
if (parent->content) {
while (((struct mock_file**)parent->content)[i]) {
++i;
}
}
parent->content = realloc(parent->content, (i+2) * sizeof(struct mock_file*));
node = malloc(sizeof(struct mock_file));
node->info = info;
node->content = NULL;
node->name = strdup(name);
((struct mock_file**)parent->content)[i] = node;
((struct mock_file**)parent->content)[i+1] = NULL;
free(dir);
free(ptr);
return node;
}
int test_mocked_fs_add_file(IsoFilesystem *fs, const char *path,
struct stat info)
{
struct mock_file *node = add_node(fs, path, info);
return (node == NULL) ? -1 : 1;
}
int test_mocked_fs_add_dir(IsoFilesystem *fs, const char *path,
struct stat info)
{
struct mock_file *node = add_node(fs, path, info);
return (node == NULL) ? -1 : 1;
}
int test_mocked_fs_add_symlink(IsoFilesystem *fs, const char *path,
struct stat info, const char *dest)
{
struct mock_file *node = add_node(fs, path, info);
if (node == NULL) {
return -1;
}
node->content = strdup(dest);
return 1;
}
static
int mocked_get_root(IsoFilesystem *fs, IsoFileSource **root)
{
if (fs == NULL || root == NULL) {
return ISO_NULL_POINTER;
}
return mocked_file_source_new(fs, "/", root);
}
static
int mocked_get_by_path(IsoFilesystem *fs, const char *path, IsoFileSource **file)
{
if (fs == NULL || path == NULL || file == NULL) {
return ISO_NULL_POINTER;
}
return mocked_file_source_new(fs, path, file);
}
static
void free_mocked_file(struct mock_file *file)
{
if (S_ISDIR(file->info.st_mode)) {
if (file->content) {
int i = 0;
while (((struct mock_file**)file->content)[i]) {
free_mocked_file(((struct mock_file**)file->content)[i]);
++i;
}
}
}
free(file->name);
free(file);
}
static
void mocked_fs_free(IsoFilesystem *fs)
{
free_mocked_file((struct mock_file *)fs->data);
}
int test_mocked_filesystem_new(IsoFilesystem **fs)
{
IsoFilesystem *filesystem;
struct mock_file *root;
if (fs == NULL) {
return ISO_NULL_POINTER;
}
filesystem = malloc(sizeof(IsoFilesystem));
filesystem->refcount = 1;
root = calloc(1, sizeof(struct mock_file));
root->info.st_mode = S_IFDIR | 0777;
filesystem->data = root;
filesystem->get_root = mocked_get_root;
filesystem->get_by_path = mocked_get_by_path;
filesystem->free = mocked_fs_free;
*fs = filesystem;
return ISO_SUCCESS;
}