379 lines
7.8 KiB
C
379 lines
7.8 KiB
C
/*
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*
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*
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*/
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#include "fsource.h"
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#include "mocked_fsrc.h"
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#include "libisofs.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <string.h>
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#include <libgen.h>
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#include <stdlib.h>
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#include <time.h>
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static
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struct mock_file *path_to_node(IsoFilesystem *fs, const char *path);
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static
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char *get_path_aux(struct mock_file *file)
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{
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if (file->parent == NULL) {
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return strdup("");
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} else {
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char *path = get_path_aux(file->parent);
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int pathlen = strlen(path);
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path = realloc(path, pathlen + strlen(file->name) + 2);
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path[pathlen] = '/';
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path[pathlen + 1] = '\0';
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return strcat(path, file->name);
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}
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}
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static
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char* mfs_get_path(IsoFileSource *src)
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{
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struct mock_file *data;
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data = src->data;
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return get_path_aux(data);
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}
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static
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char* mfs_get_name(IsoFileSource *src)
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{
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struct mock_file *data;
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data = src->data;
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return strdup(data->name);
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}
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static
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int mfs_lstat(IsoFileSource *src, struct stat *info)
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{
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struct mock_file *data;
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if (src == NULL || info == NULL) {
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return ISO_NULL_POINTER;
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}
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data = src->data;
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*info = data->atts;
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return ISO_SUCCESS;
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}
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static
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int mfs_stat(IsoFileSource *src, struct stat *info)
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{
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struct mock_file *node;
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if (src == NULL || info == NULL) {
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return ISO_NULL_POINTER;
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}
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node = src->data;
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while ( S_ISLNK(node->atts.st_mode) ) {
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/* the destination is stated */
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node = path_to_node(node->fs, (char *)node->content);
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if (node == NULL) {
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return ISO_FILE_ERROR;
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}
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}
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*info = node->atts;
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return ISO_SUCCESS;
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}
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static
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int mfs_access(IsoFileSource *src)
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{
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// TODO not implemented
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return ISO_ERROR;
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}
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static
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int mfs_open(IsoFileSource *src)
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{
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// TODO not implemented
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return ISO_ERROR;
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}
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static
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int mfs_close(IsoFileSource *src)
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{
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// TODO not implemented
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return ISO_ERROR;
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}
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static
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int mfs_read(IsoFileSource *src, void *buf, size_t count)
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{
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// TODO not implemented
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return ISO_ERROR;
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}
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static
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int mfs_readdir(IsoFileSource *src, IsoFileSource **child)
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{
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// TODO not implemented
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return ISO_ERROR;
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}
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static
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int mfs_readlink(IsoFileSource *src, char *buf, size_t bufsiz)
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{
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struct mock_file *data;
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if (src == NULL || buf == NULL) {
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return ISO_NULL_POINTER;
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}
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if (bufsiz <= 0) {
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return ISO_WRONG_ARG_VALUE;
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}
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data = src->data;
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if (!S_ISLNK(data->atts.st_mode)) {
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return ISO_FILE_IS_NOT_SYMLINK;
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}
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strncpy(buf, data->content, bufsiz);
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buf[bufsiz-1] = '\0';
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return ISO_SUCCESS;
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}
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static
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IsoFilesystem* mfs_get_filesystem(IsoFileSource *src)
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{
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struct mock_file *data;
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data = src->data;
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return data->fs;
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}
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static
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void mfs_free(IsoFileSource *src)
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{
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/* nothing to do */
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}
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IsoFileSourceIface mfs_class = {
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0,
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mfs_get_path,
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mfs_get_name,
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mfs_lstat,
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mfs_stat,
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mfs_access,
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mfs_open,
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mfs_close,
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mfs_read,
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mfs_readdir,
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mfs_readlink,
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mfs_get_filesystem,
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mfs_free
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};
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/**
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*
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* @return
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* 1 success, < 0 error
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*/
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static
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int mocked_file_source_new(struct mock_file *data, IsoFileSource **src)
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{
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IsoFileSource *mocked_src;
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if (src == NULL || data == NULL) {
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return ISO_NULL_POINTER;
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}
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/* allocate memory */
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mocked_src = malloc(sizeof(IsoFileSource));
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if (mocked_src == NULL) {
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free(data);
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return ISO_OUT_OF_MEM;
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}
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/* fill struct */
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mocked_src->refcount = 1;
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mocked_src->data = data;
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mocked_src->class = &mfs_class;
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/* take a ref to filesystem */
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//iso_filesystem_ref(fs);
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/* return */
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*src = mocked_src;
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return ISO_SUCCESS;
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}
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static
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struct mock_file *path_to_node(IsoFilesystem *fs, const char *path)
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{
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struct mock_file *node;
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struct mock_file *dir;
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char *ptr, *brk_info, *component;
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/* get the first child at the root of the volume
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* that is "/" */
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dir = fs->data;
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node = dir;
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if (!strcmp(path, "/"))
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return node;
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ptr = strdup(path);
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/* get the first component of the path */
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component = strtok_r(ptr, "/", &brk_info);
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while (component) {
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size_t i;
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if ( !S_ISDIR(node->atts.st_mode) ) {
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node=NULL;
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break;
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}
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dir = node;
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node=NULL;
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if (!dir->content) {
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break;
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}
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i = 0;
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while (((struct mock_file**)dir->content)[i]) {
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if (!strcmp(component, ((struct mock_file**)dir->content)[i]->name)) {
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node = ((struct mock_file**)dir->content)[i];
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break;
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}
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++i;
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}
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/* see if a node could be found */
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if (node==NULL) {
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break;
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}
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component = strtok_r(NULL, "/", &brk_info);
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}
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free(ptr);
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return node;
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}
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static
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void add_node(struct mock_file *parent, struct mock_file *node)
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{
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int i;
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i = 0;
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if (parent->content) {
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while (((struct mock_file**)parent->content)[i]) {
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++i;
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}
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}
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parent->content = realloc(parent->content, (i+2) * sizeof(void*));
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((struct mock_file**)parent->content)[i] = node;
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((struct mock_file**)parent->content)[i+1] = NULL;
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}
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struct mock_file *test_mocked_fs_get_root(IsoFilesystem *fs)
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{
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return fs->data;
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}
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int test_mocked_fs_add_dir(const char *name, struct mock_file *p,
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struct stat atts, struct mock_file **node)
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{
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struct mock_file *dir = calloc(1, sizeof(struct mock_file));
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dir->fs = p->fs;
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dir->atts = atts;
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dir->name = strdup(name);
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dir->parent = p;
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add_node(p, dir);
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*node = dir;
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return ISO_SUCCESS;
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}
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int test_mocked_fs_add_symlink(const char *name, struct mock_file *p,
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struct stat atts, const char *dest, struct mock_file **node)
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{
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struct mock_file *link = calloc(1, sizeof(struct mock_file));
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link->fs = p->fs;
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link->atts = atts;
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link->name = strdup(name);
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link->parent = p;
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add_node(p, link);
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link->content = strdup(dest);
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*node = link;
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return ISO_SUCCESS;
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}
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static
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int mocked_get_root(IsoFilesystem *fs, IsoFileSource **root)
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{
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if (fs == NULL || root == NULL) {
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return ISO_NULL_POINTER;
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}
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return mocked_file_source_new(fs->data, root);
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}
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static
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int mocked_get_by_path(IsoFilesystem *fs, const char *path, IsoFileSource **file)
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{
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struct mock_file *f;
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if (fs == NULL || path == NULL || file == NULL) {
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return ISO_NULL_POINTER;
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}
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f = path_to_node(fs, path);
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return mocked_file_source_new(f, file);
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}
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static
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void free_mocked_file(struct mock_file *file)
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{
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if (S_ISDIR(file->atts.st_mode)) {
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if (file->content) {
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int i = 0;
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while (((struct mock_file**)file->content)[i]) {
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free_mocked_file(((struct mock_file**)file->content)[i]);
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++i;
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}
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}
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}
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free(file->content);
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free(file->name);
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free(file);
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}
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static
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void mocked_fs_free(IsoFilesystem *fs)
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{
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free_mocked_file((struct mock_file *)fs->data);
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}
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int test_mocked_filesystem_new(IsoFilesystem **fs)
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{
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struct mock_file *root;
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IsoFilesystem *filesystem;
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if (fs == NULL) {
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return ISO_NULL_POINTER;
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}
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root = calloc(1, sizeof(struct mock_file));
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root->atts.st_atime = time(NULL);
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root->atts.st_ctime = time(NULL);
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root->atts.st_mtime = time(NULL);
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root->atts.st_uid = 0;
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root->atts.st_gid = 0;
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root->atts.st_mode = S_IFDIR | 0777;
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filesystem = malloc(sizeof(IsoFilesystem));
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filesystem->refcount = 1;
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root->fs = filesystem;
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filesystem->data = root;
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filesystem->get_root = mocked_get_root;
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filesystem->get_by_path = mocked_get_by_path;
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filesystem->free = mocked_fs_free;
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*fs = filesystem;
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return ISO_SUCCESS;
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}
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