c-ipfs/test/test_helper.c

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#include <dirent.h>
#include <sys/stat.h>
#include <string.h>
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#include "ipfs/repo/init.h"
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#include "ipfs/repo/fsrepo/fs_repo.h"
#include "ipfs/os/utils.h"
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/***
* Helper to create a test file in the OS
*/
int create_file(const char* fileName, unsigned char* bytes, size_t num_bytes) {
FILE* file = fopen(fileName, "wb");
fwrite(bytes, num_bytes, 1, file);
fclose(file);
return 1;
}
/***
* Create a buffer with some data
*/
int create_bytes(unsigned char* buffer, size_t num_bytes) {
int counter = 0;
for(int i = 0; i < num_bytes; i++) {
buffer[i] = counter++;
if (counter > 15)
counter = 0;
}
return 1;
}
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int remove_directory(const char *path)
{
DIR *d = opendir(path);
size_t path_len = strlen(path);
int r = -1;
if (d)
{
struct dirent *p;
r = 0;
while (!r && (p=readdir(d)))
{
int r2 = -1;
char *buf;
size_t len;
/* Skip the names "." and ".." as we don't want to recurse on them. */
if (!strcmp(p->d_name, ".") || !strcmp(p->d_name, ".."))
{
continue;
}
len = path_len + strlen(p->d_name) + 2;
buf = malloc(len);
if (buf)
{
struct stat statbuf;
snprintf(buf, len, "%s/%s", path, p->d_name);
if (!stat(buf, &statbuf))
{
if (S_ISDIR(statbuf.st_mode))
{
r2 = remove_directory(buf);
}
else
{
r2 = unlink(buf);
}
}
free(buf);
}
r = r2;
}
closedir(d);
}
if (!r)
{
r = rmdir(path);
}
return r;
}
int drop_and_build_repository(const char* path) {
int retVal = 0;
char currDirectory[strlen(path) + 20];
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if (os_utils_file_exists(path)) {
retVal = os_utils_filepath_join(path, "config", currDirectory, 1024);
if (retVal == 0)
return 0;
unlink(currDirectory);
retVal = os_utils_filepath_join(path, "datastore", currDirectory, 1024);
if (retVal == 0)
return 0;
remove_directory(currDirectory);
retVal = os_utils_filepath_join(path, "blockstore", currDirectory, 1024);
if (retVal == 0)
return 0;
remove_directory(currDirectory);
} else {
mkdir(path, S_IRWXU);
}
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return make_ipfs_repository(path);
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}
int drop_build_and_open_repo(const char* path, struct FSRepo** fs_repo) {
int retVal = 0;
retVal = drop_and_build_repository("/tmp/.ipfs");
if (retVal == 0)
return 0;
retVal = ipfs_repo_fsrepo_new("/tmp/.ipfs", NULL, fs_repo);
if (retVal == 0)
return 0;
retVal = ipfs_repo_fsrepo_open(*fs_repo);
if (retVal == 0) {
free(*fs_repo);
return 0;
}
return 1;
}