agorise/c-ipfs
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Added command ipfs object get [hash]

Browse source 
This will display the formatted data of a MerkleDag (links and data)
This commit is contained in:
jmjatlanta 2016-12-22 10:21:18 -05:00
parent 7fa0fc6a7b
commit da4b1f86f4
6 changed files with 132 additions and 27 deletions
Download patch file Download diff file Expand all files Collapse all files

75
importer/importer.c
View file

@ -1,8 +1,11 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ipfs/importer/importer.h"
#include "ipfs/merkledag/merkledag.h"
#include "ipfs/repo/fsrepo/fs_repo.h"
#include "ipfs/unixfs/unixfs.h"
#define MAX_DATA_SIZE 262144 // 1024 * 256;
@ -16,27 +19,48 @@
* @param node the node to add to
* @returns number of bytes read
*/
size_t ipfs_import_chunk(FILE* file, struct Node* node, struct FSRepo* fs_repo) {
size_t ipfs_import_chunk(FILE* file, struct Node* parent_node, struct FSRepo* fs_repo, size_t* total_size) {
unsigned char buffer[MAX_DATA_SIZE];
size_t bytes_read = fread(buffer, 1, MAX_DATA_SIZE, file);
if (node->data_size == 0) {
ipfs_node_set_data(node, buffer, bytes_read);
} else {
// create a new node, and link to the parent
struct Node* new_node = NULL;
ipfs_node_new_from_data(buffer, bytes_read, &new_node);
// persist
ipfs_merkledag_add(new_node, fs_repo);
// put link in parent node
struct NodeLink* new_link = NULL;
ipfs_node_link_create("", new_node->hash, new_node->hash_size, &new_link);
ipfs_node_add_link(node, new_link);
ipfs_node_free(new_node);
}
// create a new node
struct Node* new_node = NULL;
ipfs_node_new_from_data(buffer, bytes_read, &new_node);
// persist
ipfs_merkledag_add(new_node, fs_repo);
// put link in parent node
struct NodeLink* new_link = NULL;
ipfs_node_link_create("", new_node->hash, new_node->hash_size, &new_link);
new_link->t_size = new_node->data_size;
*total_size += new_link->t_size;
ipfs_node_add_link(parent_node, new_link);
ipfs_node_free(new_node);
// save the parent_node if it is time...
if (bytes_read != MAX_DATA_SIZE) {
// build UnixFS for file
struct UnixFS* unix_fs;
if (ipfs_unixfs_new(&unix_fs) == 0) {
return 0;
}
unix_fs->data_type = UNIXFS_FILE;
unix_fs->file_size = *total_size;
// now encode unixfs and put in parent_node->data
size_t temp_size = ipfs_unixfs_protobuf_encode_size(unix_fs);
unsigned char temp[temp_size];
size_t bytes_written;
if (ipfs_unixfs_protobuf_encode(unix_fs, temp, temp_size, &bytes_written) == 0) {
ipfs_unixfs_free(unix_fs);
return 0;
}
parent_node->data_size = bytes_written;
parent_node->data = (unsigned char*)malloc(bytes_written);
if (parent_node->data == NULL) {
ipfs_unixfs_free(unix_fs);
return 0;
}
memcpy(parent_node->data, temp, bytes_written);
// persist the main node
ipfs_merkledag_add(node, fs_repo);
ipfs_merkledag_add(parent_node, fs_repo);
}
return bytes_read;
}
@ -44,21 +68,22 @@ size_t ipfs_import_chunk(FILE* file, struct Node* node, struct FSRepo* fs_repo)
/**
* Creates a node based on an incoming file
* @param file_name the file to import
* @param node the root node (could have links to others)
* @param parent_node the root node (has links to others)
* @returns true(1) on success
*/
int ipfs_import_file(const char* fileName, struct Node** node, struct FSRepo* fs_repo) {
int ipfs_import_file(const char* fileName, struct Node** parent_node, struct FSRepo* fs_repo) {
int retVal = 1;
int bytes_read = MAX_DATA_SIZE;
size_t total_size = 0;
FILE* file = fopen(fileName, "rb");
retVal = ipfs_node_new(node);
retVal = ipfs_node_new(parent_node);
if (retVal == 0)
return 0;
// add all nodes
while ( bytes_read == MAX_DATA_SIZE) {
bytes_read = ipfs_import_chunk(file, *node, fs_repo);
bytes_read = ipfs_import_chunk(file, *parent_node, fs_repo, &total_size);
}
fclose(file);
@ -76,7 +101,7 @@ int ipfs_import(int argc, char** argv) {
* param 1: add
* param 2: filename
*/
struct Node* node = NULL;
struct Node* directory_node = NULL;
struct FSRepo* fs_repo = NULL;
// open the repo
@ -87,20 +112,20 @@ int ipfs_import(int argc, char** argv) {
retVal = ipfs_repo_fsrepo_open(fs_repo);
// import the file(s)
retVal = ipfs_import_file(argv[2], &node, fs_repo);
retVal = ipfs_import_file(argv[2], &directory_node, fs_repo);
// give some results to the user
int buffer_len = 100;
unsigned char buffer[buffer_len];
retVal = ipfs_cid_hash_to_base58(node->hash, node->hash_size, buffer, buffer_len);
retVal = ipfs_cid_hash_to_base58(directory_node->hash, directory_node->hash_size, buffer, buffer_len);
if (retVal == 0) {
printf("Unable to generate hash\n");
return 0;
}
printf("added %s %s\n", buffer, argv[2]);
if (node != NULL)
ipfs_node_free(node);
if (directory_node != NULL)
ipfs_node_free(directory_node);
if (fs_repo != NULL)
ipfs_repo_fsrepo_free(fs_repo);