c-ipfs/repo/config/config.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libp2p/utils/linked_list.h"
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#include "ipfs/repo/config/config.h"
#include "libp2p/os/utils.h"
#include "ipfs/repo/config/bootstrap_peers.h"
#include "ipfs/repo/config/swarm.h"
#include "libp2p/db/filestore.h"
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#include "multiaddr/multiaddr.h"
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/***
* public
*/
/***
* gets the default path from the environment variable and/or the homedir struct
* NOTE: this allocates memory for result. Clean up after yourself.
* @param result where the result string will reside.
* @returns true(1) on success, or false(0)
*/
int config_get_default_path_root(char** result) {
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char* root = os_utils_getenv("IPFS_PATH");
if (root == NULL) {
root = os_utils_getenv("HOME");
*result = malloc( strlen(root) + 7);
if (*result == NULL)
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return 0;
strncpy(*result, root, strlen(root)+1);
strncat(*result, "/.ipfs", 7);
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} else {
*result = malloc(strlen(root)+1);
if (*result == NULL)
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return 0;
strncpy(*result, root, strlen(root)+1);
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}
return 1;
}
/***
* Returns the path "extension" relative to the configuration root.
* If an empty string is provided for config_root, the default root
* is used. NOTE: be sure to dispose of the memory allocated for result.
* @param config_root the path to the root of the configuration
* @param extension the extension to add to the path
* @param result the result of config_root with extension appended
* @returns true(1) if everything went okay, false(0) otherwise
*/
int config_path(char* config_root, char* extension, char* result, int max_len) {
if (strlen(config_root) == 0) {
char* default_path = NULL;
int retVal = config_get_default_path_root(&default_path);
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if (!retVal)
return retVal;
retVal = os_utils_filepath_join(default_path, extension, result, max_len);
free(default_path);
return retVal;
}
return os_utils_filepath_join(config_root, extension, result, max_len);
}
/**
* provide the full path of the config file, given the directory.
* NOTE: This allocates memory for result. Make sure to clean up after yourself.
* @param path the path to the config file (without the actual file name)
* @param result the full filename including the path
* @returns true(1) on success, false(0) otherwise
*/
int repo_config_get_file_name(char* path, char** result) {
unsigned long max_len = strlen(path) + 8;
*result = malloc(sizeof(char) * max_len);
if (result == NULL)
return 0;
return os_utils_filepath_join(path, "config", *result, max_len);
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}
int ipfs_repo_config_is_valid_identity(struct Identity* identity) {
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if (identity == NULL || identity->peer == NULL || identity->peer->id == NULL || identity->peer->id[0] != 'Q' || identity->peer->id[1] != 'm')
return 0;
return 1;
}
/***
* create a configuration based on the passed in parameters
* @param config the configuration struct to be filled in
* @param num_bits_for_keypair number of bits for the key pair
* @param repo_path the path to the configuration
* @param swarm_port the port to run on
* @param bootstrap_peers vector of Multiaddresses of fellow peers
* @returns true(1) on success, otherwise 0
*/
int ipfs_repo_config_init(struct RepoConfig* config, unsigned int num_bits_for_keypair, const char* repo_path, int swarm_port, struct Libp2pVector *bootstrap_peers) {
// identity
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int counter = 0;
while (counter < 5) {
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if (counter > 0) {
//TODO: This shouldn't be here, but it was the only way to cleanup. Need to find a better way...
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if (config->identity->private_key.public_key_der != NULL) {
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free(config->identity->private_key.public_key_der);
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config->identity->private_key.public_key_der = NULL;
}
if (config->identity->private_key.der != NULL) {
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free(config->identity->private_key.der);
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config->identity->private_key.der = NULL;
}
if (config->identity->peer != NULL) {
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libp2p_peer_free(config->identity->peer);
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config->identity->peer = NULL;
}
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}
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if (!repo_config_identity_init(config->identity, num_bits_for_keypair))
return 0;
if (ipfs_repo_config_is_valid_identity(config->identity))
break;
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// we didn't get it right, try again
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counter++;
}
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if (counter == 5)
return 0;
// bootstrap peers
if (bootstrap_peers != NULL) {
config->bootstrap_peers = libp2p_utils_vector_new(bootstrap_peers->total);
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for(int i = 0; i < bootstrap_peers->total; i++) {
const struct MultiAddress* orig = (const struct MultiAddress*) libp2p_utils_vector_get(bootstrap_peers, i);
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libp2p_utils_vector_add(config->bootstrap_peers, multiaddress_copy(orig));
}
}
else {
if (!repo_config_bootstrap_peers_retrieve(&(config->bootstrap_peers)))
return 0;
}
// datastore
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if (!libp2p_datastore_init(config->datastore, repo_path))
return 0;
// swarm addresses
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char* addr1 = malloc(64);
if (addr1 != NULL) {
sprintf(addr1, "/ip4/0.0.0.0/tcp/%d", swarm_port);
config->addresses->swarm_head = libp2p_utils_linked_list_new();
if (config->addresses->swarm_head != NULL) {
config->addresses->swarm_head->item = malloc(strlen(addr1) + 1);
if (config->addresses->swarm_head->item != NULL) {
strcpy(config->addresses->swarm_head->item, addr1);
}
sprintf(addr1, "/ip6/::/tcp/%d", swarm_port);
config->addresses->swarm_head->next = libp2p_utils_linked_list_new();
if (config->addresses->swarm_head->next != NULL) {
config->addresses->swarm_head->next->item = malloc(strlen(addr1) + 1);
if (config->addresses->swarm_head->next->item != NULL)
strcpy(config->addresses->swarm_head->next->item, addr1);
}
}
int port_adder = swarm_port - 4001;
sprintf(addr1, "/ip4/127.0.0.1/tcp/%d", 5001 + port_adder);
config->addresses->api = malloc(strlen(addr1)+1);
if (config->addresses->api != NULL)
strcpy(config->addresses->api, addr1);
sprintf(addr1, "/ip4/127.0.0.1/tcp/%d", 8080 + port_adder);
config->addresses->gateway = malloc(strlen(addr1)+1);
if (config->addresses->gateway != NULL)
strcpy(config->addresses->gateway, addr1);
free(addr1);
}
config->discovery.mdns.enabled = 1;
config->discovery.mdns.interval = 10;
config->mounts.ipfs = "/ipfs";
config->mounts.ipns = "/ipns";
config->ipns.resolve_cache_size = 128;
config->reprovider.interval = "12h";
config->gateway->root_redirect = "";
config->gateway->writable = 0;
config->gateway->path_prefixes.num_elements = 0;
// gateway http headers
char** header_array = (char * []) { "Access-Control-Allow-Origin", "Access-Control-Allow-Methods", "Access-Control-Allow-Headers" };
char** header_values = (char*[]) { "*", "GET", "X-Requested-With" };
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if (!repo_config_gateway_http_header_init(config->gateway->http_headers, header_array, header_values, 3))
return 0;
return 1;
}
/***
* Initialize memory for a RepoConfig struct
* @param config the structure to initialize
* @returns true(1) on success
*/
int ipfs_repo_config_new(struct RepoConfig** config) {
*config = (struct RepoConfig*)malloc(sizeof(struct RepoConfig));
if (*config == NULL)
return 0;
// set initial values
(*config)->bootstrap_peers = NULL;
int retVal = 1;
retVal = repo_config_identity_new(&((*config)->identity));
if (retVal == 0)
return 0;
retVal = libp2p_datastore_new(&((*config)->datastore));
if (retVal == 0)
return 0;
(*config)->filestore = libp2p_filestore_new();
retVal = repo_config_addresses_new(&((*config)->addresses));
if (retVal == 0)
return 0;
retVal = repo_config_gateway_new(&((*config)->gateway));
if (retVal == 0)
return 0;
if (!repo_config_replication_new(&((*config)->replication)))
return 0;
return 1;
}
/**
* Free resources
* @param config the struct to be freed
* @returns true(1) on success
*/
int ipfs_repo_config_free(struct RepoConfig* config) {
if (config != NULL) {
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if (config->identity != NULL)
repo_config_identity_free(config->identity);
if (&(config->bootstrap_peers) != NULL)
repo_config_bootstrap_peers_free(config->bootstrap_peers);
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if (config->datastore != NULL)
libp2p_datastore_free(config->datastore);
if (config->filestore != NULL)
libp2p_filestore_free(config->filestore);
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if (config->addresses != NULL)
repo_config_addresses_free(config->addresses);
if (config->gateway != NULL)
repo_config_gateway_free(config->gateway);
if (config->replication != NULL)
repo_config_replication_free(config->replication);
free(config);
}
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return 1;
}
int repo_config_martial_to_json(struct RepoConfig* config) {
return 0;
}