298 lines
9.6 KiB
C
298 lines
9.6 KiB
C
//
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// fs_repo.c
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// c-ipfs
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//
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// Created by John Jones on 10/27/16.
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// Copyright © 2016 JMJAtlanta. All rights reserved.
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//
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#include "libp2p/crypto/encoding/base64.h"
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#include "ipfs/repo/fsrepo/fs_repo.h"
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#include "ipfs/os/utils.h"
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/**
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* private methods
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*/
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/**
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* writes the config file
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* @param full_filename the full filename of the config file in the OS
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* @param config the details to put into the file
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* @returns true(1) on success, else false(0)
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*/
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int repo_config_write_config_file(char* full_filename, struct RepoConfig* config) {
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FILE* out_file = fopen(full_filename, "w");
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if (out_file == NULL)
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return 0;
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fprintf(out_file, "{\n");
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fprintf(out_file, " \"Identity\": {\n");
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fprintf(out_file, " \"PeerID\": \"%s\",\n", config->identity.peer_id);
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// TODO: print correct format of private key
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// first base 64 it
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size_t encoded_size = libp2p_crypto_encoding_base64_encode_size(config->identity.private_key.der_length);
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unsigned char encoded_buffer[encoded_size + 1];
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int retVal = libp2p_crypto_encoding_base64_encode(config->identity.private_key.der, config->identity.private_key.der_length, encoded_buffer, encoded_size, &encoded_size);
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if (retVal == 0)
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return 0;
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encoded_buffer[encoded_size] = 0;
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fprintf(out_file, " \"PrivKey\": \"%s\"\n", encoded_buffer);
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fprintf(out_file, " },\n");
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fprintf(out_file, " \"Datastore\": {\n");
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fprintf(out_file, " \"Type\": \"%s\",\n", config->datastore.type);
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fprintf(out_file, " \"Path\": \"%s\",\n", config->datastore.path);
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fprintf(out_file, " \"StorageMax\": \"%s\",\n", config->datastore.storage_max);
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fprintf(out_file, " \"StorageGCWatermark\": %d,\n", config->datastore.storage_gc_watermark);
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fprintf(out_file, " \"GCPeriod\": \"%s\",\n", config->datastore.gc_period);
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fprintf(out_file, " \"Params\": null,\n");
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fprintf(out_file, " \"NoSync\": %s,\n", config->datastore.no_sync ? "true" : "false");
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fprintf(out_file, " \"HashOnRead\": %s,\n", config->datastore.hash_on_read ? "true" : "false");
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fprintf(out_file, " \"BloomFilterSize\": %d\n", config->datastore.bloom_filter_size);
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fprintf(out_file, " },\n \"Addresses\": {\n");
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fprintf(out_file, " \"Swarm\": [\n");
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for(int i = 0; i < config->addresses.swarm.num_addresses; i++) {
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fprintf(out_file, " \"%s\"", config->addresses.swarm.addresses[i]);
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if (i != (config->addresses.swarm.num_addresses - 1))
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fprintf(out_file, ",\n");
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else
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fprintf(out_file, "\n");
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}
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fprintf(out_file, " ],\n");
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fprintf(out_file, " \"API\": \"%s\",\n", config->addresses.api);
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fprintf(out_file, " \"Gateway\": \"%s\"\n", config->addresses.gateway);
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fprintf(out_file, " }\n \"Mounts\": {\n");
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fprintf(out_file, " \"IPFS\": \"%s\",\n", config->mounts.ipfs);
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fprintf(out_file, " \"IPNS\": \"%s\",\n", config->mounts.ipns);
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fprintf(out_file, " \"FuseAllowOther\": %s\n", "false");
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fprintf(out_file, " },\n \"Discovery\": {\n \"MDNS\": {\n");
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fprintf(out_file, " \"Enabled\": %s,\n", config->discovery.mdns.enabled ? "true" : "false");
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fprintf(out_file, " \"Interval\": %d\n }\n },\n", config->discovery.mdns.interval);
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fprintf(out_file, " \"Ipns\": {\n");
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fprintf(out_file, " \"RepublishedPeriod\": \"\",\n");
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fprintf(out_file, " \"RecordLifetime\": \"\",\n");
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fprintf(out_file, " \"ResolveCacheSize\": %d\n", config->ipns.resolve_cache_size);
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fprintf(out_file, " },\n \"Bootstrap\": [\n");
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for(int i = 0; i < config->peer_addresses.num_peers; i++) {
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fprintf(out_file, " \"%s\"", config->peer_addresses.peers[i]->entire_string);
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if (i < config->peer_addresses.num_peers - 1)
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fprintf(out_file, ",\n");
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else
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fprintf(out_file, "\n");
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}
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fprintf(out_file, " ],\n \"Tour\": {\n \"Last\": \"\"\n },\n");
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fprintf(out_file, " \"Gateway\": {\n");
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fprintf(out_file, " \"HTTPHeaders\": {\n");
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for (int i = 0; i < config->gateway.http_headers.num_elements; i++) {
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fprintf(out_file, " \"%s\": [\n \"%s\"\n ]", config->gateway.http_headers.headers[i]->header, config->gateway.http_headers.headers[i]->value);
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if (i < config->gateway.http_headers.num_elements - 1)
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fprintf(out_file, ",\n");
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else
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fprintf(out_file, "\n");
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}
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fprintf(out_file, " \"RootRedirect\": \"%s\"\n", config->gateway.root_redirect);
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fprintf(out_file, " \"Writable\": %s\n", config->gateway.writable ? "true" : "false");
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fprintf(out_file, " \"PathPrefixes\": []\n");
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fprintf(out_file, " },\n \"SupernodeRouting\": {\n");
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fprintf(out_file, " \"Servers\": null\n },");
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fprintf(out_file, " \"API\": {\n \"HTTPHeaders\": null\n },\n");
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fprintf(out_file, " \"Swarm\": {\n \"AddrFilters\": null\n }\n}");
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fclose(out_file);
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return 1;
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}
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/**
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* constructs the FSRepo struct. Basically fills in the FSRepo.path
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* Remember: the path must be freed
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* @param repo_path the path to the repo
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* @param repo the struct to fill in
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* @returns false(0) if something bad happened, otherwise true(1)
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*/
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int fs_repo_new_fs_repo(char* repo_path, struct FSRepo* repo) {
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if (repo_path == NULL) {
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// get the user's home directory
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char* home_dir = os_utils_get_homedir();
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char* default_subdir = "/.ipfs";
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unsigned long newPathLen = strlen(home_dir) + strlen(default_subdir) + 2; // 1 for slash and 1 for end
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char* newPath = malloc(sizeof(char) * newPathLen);
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os_utils_filepath_join(os_utils_get_homedir(), default_subdir, newPath, newPathLen);
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repo->path = newPath;
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} else {
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int len = strlen(repo_path) + 1;
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repo->path = (char*)malloc(len);
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strncpy(repo->path, repo_path, len);
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}
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return 1;
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}
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/**
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* Cleans up memory
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* @param repo the struct to clean up
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* @returns true(1) on success
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*/
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int fs_repo_free(struct FSRepo* repo) {
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free(repo->path);
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return 1;
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}
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/**
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* checks to see if the repo is initialized at the given path
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* @param full_path the path to the repo
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* @returns true(1) if the config file is there, false(0) otherwise
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*/
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int repo_config_is_initialized(char* full_path) {
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char* config_file_full_path;
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int retVal = repo_config_get_file_name(full_path, &config_file_full_path);
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if (!retVal)
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return 0;
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if (os_utils_file_exists(config_file_full_path))
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retVal = 1;
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else
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retVal = 0;
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free(config_file_full_path);
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return retVal;
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}
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/***
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* Check to see if the repo is initialized
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* @param full_path the path to the repo
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* @returns true(1) if it is initialized, false(0) otherwise.
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*/
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int fs_repo_is_initialized_unsynced(char* full_path) {
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return repo_config_is_initialized(full_path);
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}
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/**
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* checks to see if the repo is initialized
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* @param full_path the full path to the repo
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* @returns true(1) if it is initialized, otherwise false(0)
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*/
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int repo_check_initialized(char* full_path) {
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// note the old version of this reported an error if the repo was a .go-ipfs repo (by looking at the path)
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// this version skips that step
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return fs_repo_is_initialized_unsynced(full_path);
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}
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/***
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* opens the datastore and puts it in the FSRepo struct
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* @param repo the FSRepo struct
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* @returns 0 on failure, otherwise 1
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*/
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int fs_repo_open_config(struct FSRepo* repo) {
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//TODO: open config file
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//TODO: read into the FSRepo struct
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return 1;
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}
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/***
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* opens the repo's datastore, and puts a reference to it in the FSRepo struct
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* @param repo the FSRepo struct
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* @returns 0 on failure, otherwise 1
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*/
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int fs_repo_open_datastore(struct FSRepo* repo) {
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//TODO: this
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return 1;
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}
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/**
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* public methods
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*/
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/**
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* opens a fsrepo
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* @param repo_path the path to the repo
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* @param repo where to store the repo info
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* @return 0 if there was a problem, otherwise 1
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*/
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int fs_repo_open(char* repo_path, struct FSRepo* repo) {
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//TODO: lock
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// get the path set in the repo struct
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int retVal = fs_repo_new_fs_repo(repo_path, repo);
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if (retVal == 0) {
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fs_repo_free(repo);
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return 0;
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}
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// check if initialized
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if (!repo_check_initialized(repo->path)) {
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fs_repo_free(repo);
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return 0;
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}
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//TODO: lock the file (remember to unlock)
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//TODO: check the version, and make sure it is correct
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//TODO: make sure the directory is writable
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//TODO: open the config
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if (!fs_repo_open_config(repo)) {
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fs_repo_free(repo);
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return 0;
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}
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//TODO: open the datastore. Note: the config file has the datastore type
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if (!fs_repo_open_datastore(repo)) {
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fs_repo_free(repo);
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return 0;
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}
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return 1;
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}
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/***
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* checks to see if the repo is initialized
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* @param repo_path the path to the repo
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* @returns true(1) if it is initialized, otherwise false(0)
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*/
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int fs_repo_is_initialized(char* repo_path) {
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//TODO: lock things up so that someone doesn't try an init or remove while this call is in progress
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// don't forget to unlock
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return fs_repo_is_initialized_unsynced(repo_path);
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}
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/**
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* Initializes a new FSRepo at the given path with the provided config
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* @param path the path to use
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* @param config the information for the config file
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* @returns true(1) on success
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*/
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int fs_repo_init(char* path, struct RepoConfig* config) {
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// TODO: Do a lock so 2 don't do this at the same time
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// return error if this has already been done
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if (fs_repo_is_initialized_unsynced(path))
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return 0;
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int retVal = fs_repo_write_config_file(path, config);
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if (retVal == 0)
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return 0;
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// TODO: Implement this method
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//retVal = fs_repo_defaultds_init(path, config);
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if (retVal == 0)
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return 0;
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// write the version to a file for migrations (see repo/fsrepo/migrations/mfsr.go)
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//TODO: mfsr.RepoPath(repo_path).WriteVersion(RepoVersion)
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return 1;
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}
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/**
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* write the config file to disk
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* @param path the path to the file
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* @param config the config structure
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* @returns true(1) on success
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*/
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int fs_repo_write_config_file(char* path, struct RepoConfig* config) {
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if (fs_repo_is_initialized(path))
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return 0;
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char* buff = NULL;
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if (!repo_config_get_file_name(path, &buff))
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return 0;
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int retVal = repo_config_write_config_file(buff, config);
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free(buff);
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return retVal;
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}
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