diff --git a/blocks/block.c b/blocks/block.c index bdd1381..a8dbf2a 100644 --- a/blocks/block.c +++ b/blocks/block.c @@ -175,9 +175,19 @@ int ipfs_block_free(struct Block* block) { */ struct Block* ipfs_block_copy(struct Block* original) { struct Block* copy = ipfs_block_new(); - copy->data_length = original->data_length; - copy->data = (unsigned char*) malloc(original->data_length); - memcpy(copy->data, original->data, original->data_length); - copy->cid = ipfs_cid_copy(original->cid); + if (copy != NULL) { + copy->data_length = original->data_length; + copy->data = (unsigned char*) malloc(original->data_length); + if (copy->data == NULL) { + ipfs_block_free(copy); + return NULL; + } + memcpy(copy->data, original->data, original->data_length); + copy->cid = ipfs_cid_copy(original->cid); + if (copy->cid == NULL) { + ipfs_block_free(copy); + return NULL; + } + } return copy; } diff --git a/blocks/blockstore.c b/blocks/blockstore.c index c5a0ecb..2e3f5e3 100644 --- a/blocks/blockstore.c +++ b/blocks/blockstore.c @@ -102,6 +102,8 @@ char* ipfs_blockstore_path_get(const struct FSRepo* fs_repo, const char* filenam } int complete_filename_size = strlen(filepath) + strlen(filename) + 2; char* complete_filename = (char*)malloc(complete_filename_size); + if (complete_filename == NULL) + return NULL; retVal = os_utils_filepath_join(filepath, filename, complete_filename, complete_filename_size); return complete_filename; } diff --git a/cid/cid.c b/cid/cid.c index dcfd281..fdfaa78 100644 --- a/cid/cid.c +++ b/cid/cid.c @@ -147,6 +147,10 @@ struct Cid* ipfs_cid_copy(const struct Cid* original) { copy->version = original->version; copy->hash_length = original->hash_length; copy->hash = (unsigned char*) malloc(original->hash_length); + if (copy->hash == NULL) { + ipfs_cid_free(copy); + return NULL; + } memcpy(copy->hash, original->hash, original->hash_length); } return copy; diff --git a/core/http_request.c b/core/http_request.c index 5d511bf..0e8ac89 100644 --- a/core/http_request.c +++ b/core/http_request.c @@ -126,6 +126,10 @@ int ipfs_core_http_process_name(struct IpfsNode* local_node, struct HttpRequest* struct HttpResponse* res = *response; res->content_type = "application/json"; res->bytes = (uint8_t*) malloc(strlen(local_node->identity->peer->id) + strlen(path) + 30); + if (res->bytes == NULL) { + free(result); + return 0; + } sprintf((char*)res->bytes, "{ \"Path\": \"%s\" }", result); res->bytes_size = strlen((char*)res->bytes); } @@ -137,6 +141,8 @@ int ipfs_core_http_process_name(struct IpfsNode* local_node, struct HttpRequest* struct HttpResponse* res = *response; res->content_type = "application/json"; res->bytes = (uint8_t*) malloc(strlen(local_node->identity->peer->id) + strlen(path) + 30); + if (res->bytes == NULL) + return 0; sprintf((char*)res->bytes, "{ \"Name\": \"%s\"\n \"Value\": \"%s\" }", local_node->identity->peer->id, path); res->bytes_size = strlen((char*)res->bytes); } @@ -194,40 +200,44 @@ int ipfs_core_http_process_dht_provide(struct IpfsNode* local_node, struct HttpR struct HttpResponse* res = *response; res->content_type = "application/json"; res->bytes = (uint8_t*) malloc(1024); - if (!failedCount) { - // complete success - // TODO: do the right thing - snprintf((char*)res->bytes, 1024, "{\n\t\"ID\": \"\"\n" \ - "\t\"Type\": \"\"\n" - "\t\"Responses\": [\n" - "\t\t{\n" - "\t\t\t\"ID\": \"\"\n" - "\t\t\t\"Addrs\": [\n" - "\t\t\t\t\"\"\n" - "\t\t\t]\n" - "\t\t}\n" - "\t]\n" - "\t\"Extra\": \"\"\n" - "}\n" - ); + if (res->bytes == NULL) { + res->bytes_size = 0; } else { - // at least some failed - // TODO: do the right thing - snprintf((char*)res->bytes, 1024, "{\n\t\"ID\": \"\",\n" \ - "\t\"Type\": \"\",\n" - "\t\"Responses\": [\n" - "\t\t{\n" - "\t\t\t\"ID\": \"\",\n" - "\t\t\t\"Addrs\": [\n" - "\t\t\t\t\"\"\n" - "\t\t\t]\n" - "\t\t}\n" - "\t],\n" - "\t\"Extra\": \"\"\n" - "}\n" - ); + if (!failedCount) { + // complete success + // TODO: do the right thing + snprintf((char*)res->bytes, 1024, "{\n\t\"ID\": \"\"\n" \ + "\t\"Type\": \"\"\n" + "\t\"Responses\": [\n" + "\t\t{\n" + "\t\t\t\"ID\": \"\"\n" + "\t\t\t\"Addrs\": [\n" + "\t\t\t\t\"\"\n" + "\t\t\t]\n" + "\t\t}\n" + "\t]\n" + "\t\"Extra\": \"\"\n" + "}\n" + ); + } else { + // at least some failed + // TODO: do the right thing + snprintf((char*)res->bytes, 1024, "{\n\t\"ID\": \"\",\n" \ + "\t\"Type\": \"\",\n" + "\t\"Responses\": [\n" + "\t\t{\n" + "\t\t\t\"ID\": \"\",\n" + "\t\t\t\"Addrs\": [\n" + "\t\t\t\t\"\"\n" + "\t\t\t]\n" + "\t\t}\n" + "\t],\n" + "\t\"Extra\": \"\"\n" + "}\n" + ); + } + res->bytes_size = strlen((char*)res->bytes); } - res->bytes_size = strlen((char*)res->bytes); return failedCount < request->arguments->total; } @@ -322,7 +332,9 @@ char* ipfs_core_http_request_build_url_start(struct IpfsNode* local_node) { sprintf(port, "%d", portInt); int len = 18 + strlen(host) + strlen(port); char* retVal = malloc(len); - sprintf(retVal, "http://%s:%s/api/v0", host, port); + if (retVal != NULL) { + sprintf(retVal, "http://%s:%s/api/v0", host, port); + } free(host); multiaddress_free(ma); return retVal; @@ -338,18 +350,20 @@ int ipfs_core_http_request_add_commands(struct HttpRequest* request, char** url) // command int addl_length = strlen(request->command) + 2; char* string1 = (char*) malloc(strlen(*url) + addl_length); - sprintf(string1, "%s/%s", *url, request->command); - free(*url); - *url = string1; - // sub_command - if (request->sub_command != NULL) { - addl_length = strlen(request->sub_command) + 2; - string1 = (char*) malloc(strlen(*url) + addl_length); - sprintf(string1, "%s/%s", *url, request->sub_command); + if (string1 != NULL) { + sprintf(string1, "%s/%s", *url, request->command); free(*url); *url = string1; + // sub_command + if (request->sub_command != NULL) { + addl_length = strlen(request->sub_command) + 2; + string1 = (char*) malloc(strlen(*url) + addl_length); + sprintf(string1, "%s/%s", *url, request->sub_command); + free(*url); + *url = string1; + } } - return 1; + return string1 != NULL; } /*** diff --git a/core/null.c b/core/null.c index fec2014..80abfbc 100644 --- a/core/null.c +++ b/core/null.c @@ -174,6 +174,11 @@ void* ipfs_null_listen (void *ptr) connection_param->local_node = listen_param->local_node; connection_param->port = listen_param->port; connection_param->ip = malloc(INET_ADDRSTRLEN); + if (connection_param->ip == NULL) { + // we are out of memory + free(connection_param); + continue; + } if (inet_ntop(AF_INET, &(listen_param->ipv4), connection_param->ip, INET_ADDRSTRLEN) == NULL) { free(connection_param->ip); connection_param->ip = NULL; diff --git a/core/ping.c b/core/ping.c index 33c1b72..8b6c28c 100644 --- a/core/ping.c +++ b/core/ping.c @@ -66,6 +66,10 @@ int ipfs_ping (int argc, char **argv) // perhaps they passed an IP and port if (argc >= 3) { char* str = malloc(strlen(argv[2]) + strlen(argv[3]) + 100); + if (str == NULL) { + // memory issue + goto exit; + } sprintf(str, "/ip4/%s/tcp/%s", argv[2], argv[3]); peer_to_ping = libp2p_peer_new(); if (peer_to_ping) { diff --git a/exchange/bitswap/message.c b/exchange/bitswap/message.c index b815ba5..01ab22e 100644 --- a/exchange/bitswap/message.c +++ b/exchange/bitswap/message.c @@ -519,6 +519,10 @@ int ipfs_bitswap_message_protobuf_encode(const struct BitswapMessage* message, u // protobuf it size_t temp_size = ipfs_blocks_block_protobuf_encode_size(entry); uint8_t* temp = (uint8_t*) malloc(temp_size); + if (temp == NULL) { + // memory issues + return 0; + } if (!ipfs_blocks_block_protobuf_encode(entry, temp, temp_size, &temp_size)) { free(temp); return 0; @@ -536,6 +540,9 @@ int ipfs_bitswap_message_protobuf_encode(const struct BitswapMessage* message, u if (message->wantlist != NULL) { size_t temp_size = ipfs_bitswap_wantlist_protobuf_encode_size(message->wantlist); uint8_t* temp = (uint8_t*) malloc(temp_size); + if (temp == NULL) { + return 0; + } if (!ipfs_bitswap_wantlist_protobuf_encode(message->wantlist, temp, temp_size, &temp_size)) { free(temp); return 0; @@ -665,6 +672,9 @@ int ipfs_bitswap_message_add_wantlist_items(struct BitswapMessage* message, stru struct WantlistEntry* entry = ipfs_bitswap_wantlist_entry_new(); entry->block_size = ipfs_cid_protobuf_encode_size(cidEntry->cid); entry->block = (unsigned char*) malloc(entry->block_size); + if (entry->block == NULL) { + return 0; + } if (!ipfs_cid_protobuf_encode(cidEntry->cid, entry->block, entry->block_size, &entry->block_size)) { // TODO: we should do more than return a half-baked list return 0; diff --git a/importer/exporter.c b/importer/exporter.c index 88acc77..7c4d53b 100644 --- a/importer/exporter.c +++ b/importer/exporter.c @@ -36,16 +36,20 @@ int ipfs_exporter_get_node(struct IpfsNode* local_node, const unsigned char* has goto exit; } - libp2p_logger_debug("exporter", "get_node got a value. Converting it to a HashtableNode\n"); // unprotobuf if (!ipfs_hashtable_node_protobuf_decode(buffer, buffer_size, result)) { - libp2p_logger_debug("exporter", "Conversion to HashtableNode not successful\n"); + libp2p_logger_error("exporter", "Conversion to HashtableNode not successful\n"); goto exit; } // copy in the hash (*result)->hash_size = hash_size; (*result)->hash = malloc(hash_size); + if ( (*result)->hash == NULL) { + // memory issue + libp2p_logger_error("exporter", "get_node: Unable to allocate memory.\n"); + goto exit; + } memcpy((*result)->hash, hash, hash_size); retVal = 1; diff --git a/importer/importer.c b/importer/importer.c index 5e555de..ed6a86b 100644 --- a/importer/importer.c +++ b/importer/importer.c @@ -220,6 +220,12 @@ int ipfs_import_file(const char* root_dir, const char* fileName, struct Hashtabl } else { free(path); path = malloc(strlen(root_dir) + strlen(file) + 2); + if (path == NULL) { + // memory issue + if (file != NULL) + free(file); + return 0; + } os_utils_filepath_join(root_dir, file, path, strlen(root_dir) + strlen(file) + 2); new_root_dir = path; } @@ -328,6 +334,9 @@ struct FileList* ipfs_import_get_filelist(struct CliArguments* args) { continue; } struct FileList* current = (struct FileList*)malloc(sizeof(struct FileList)); + if (current == NULL) { + return NULL; + } current->next = NULL; current->file_name = args->argv[i]; // now wire it in diff --git a/importer/resolver.c b/importer/resolver.c index 9ede07e..7ba6698 100644 --- a/importer/resolver.c +++ b/importer/resolver.c @@ -28,9 +28,16 @@ int ipfs_resolver_next_path(const char* path, char** next_part) { char* pos = strchr(&path[i+1], '/'); if (pos == NULL) { *next_part = (char*)malloc(strlen(path) + 1); + if ( *next_part == NULL) { + // memory issue + return 0; + } strcpy(*next_part, path); } else { *next_part = (char*)malloc(pos - &path[i] + 1); + if (*next_part == NULL) { + return 0; + } strncpy(*next_part, &path[i], pos-&path[i]); (*next_part)[pos-&path[i]] = 0; } @@ -145,9 +152,11 @@ struct HashtableNode* ipfs_resolver_remote_get(const char* path, struct Hashtabl message->key_size = strlen(key); size_t b58size = 100; uint8_t *b58key = (uint8_t *) malloc(b58size); - libp2p_crypto_encoding_base58_encode((unsigned char*)message->key, message->key_size, (unsigned char**) &b58key, &b58size); - libp2p_logger_debug("resolver", "Attempting to use kademlia to get key %s.\n", b58key); - free(b58key); + if (b58key == NULL) { + libp2p_crypto_encoding_base58_encode((unsigned char*)message->key, message->key_size, (unsigned char**) &b58key, &b58size); + libp2p_logger_debug("resolver", "Attempting to use kademlia to get key %s.\n", b58key); + free(b58key); + } size_t message_protobuf_size = libp2p_message_protobuf_encode_size(message); unsigned char message_protobuf[message_protobuf_size]; libp2p_message_protobuf_encode(message, message_protobuf, message_protobuf_size, &message_protobuf_size); diff --git a/main/main.c b/main/main.c index b85302a..db2e1ae 100644 --- a/main/main.c +++ b/main/main.c @@ -41,6 +41,9 @@ void stripit(int argc, char** argv) { char* old_arg = argv[argc]; int full_length = strlen(old_arg); char *tmp = (char*) malloc(full_length + 1); + if (tmp == NULL) { + return; + } char* ptr1 = &old_arg[1]; strcpy(tmp, ptr1); tmp[strlen(tmp)-1] = 0; diff --git a/merkledag/node.c b/merkledag/node.c index f4ff9ff..aed331f 100644 --- a/merkledag/node.c +++ b/merkledag/node.c @@ -29,6 +29,7 @@ enum WireType ipfs_node_link_message_fields[] = { WIRETYPE_LENGTH_DELIMITED, WIR * @Param name: The name of the link (char *) * @Param size: Size of the link (size_t) * @Param ahash: An Qmhash + * @returns true(1) on success, false(0) otherwise */ int ipfs_node_link_create(char * name, unsigned char * ahash, size_t hash_size, struct NodeLink** node_link) { @@ -40,12 +41,18 @@ int ipfs_node_link_create(char * name, unsigned char * ahash, size_t hash_size, // hash link->hash_size = hash_size; link->hash = (unsigned char*)malloc(hash_size); + if (link->hash == NULL) { + ipfs_node_link_free(link); + *node_link = NULL; + return 0; + } memcpy(link->hash, ahash, hash_size); // name if (name != NULL && strlen(name) > 0) { link->name = malloc(strlen(name) + 1); if ( link->name == NULL) { - free(link); + ipfs_node_link_free(link); + *node_link = NULL; return 0; } strcpy(link->name, name); @@ -192,6 +199,9 @@ int ipfs_node_link_protobuf_decode(unsigned char* buffer, size_t buffer_length, } link->hash_size = hash_size - 2; link->hash = (unsigned char*)malloc(link->hash_size); + if (link->hash == NULL) { + goto exit; + } memcpy((char*)link->hash, (char*)&hash[2], link->hash_size); free(hash); pos += bytes_read; @@ -729,13 +739,18 @@ int Node_Resolve(char ** result, char * input1) char * tr; char * end; tr=strtok_r(input,"/",&end); + int retVal = 1; for(int i = 0;tr;i++) { result[i] = (char *) malloc(strlen(tr)+1); - strcpy(result[i], tr); + if (result[i] != NULL) { + strcpy(result[i], tr); + } else { + retVal = 0; + } tr=strtok_r(NULL,"/",&end); } - return 1; + return retVal; } /*Node_Resolve_Links @@ -751,6 +766,9 @@ struct Link_Proc * Node_Resolve_Links(struct HashtableNode * N, char * path) } int expected_link_ammount = Node_Resolve_Max_Size(path); struct Link_Proc * LProc = (struct Link_Proc *) malloc(sizeof(struct Link_Proc) + sizeof(struct NodeLink) * expected_link_ammount); + if (LProc == NULL) { + return NULL; + } LProc->ammount = 0; char * linknames[expected_link_ammount]; Node_Resolve(linknames, path); @@ -761,8 +779,10 @@ struct Link_Proc * Node_Resolve_Links(struct HashtableNode * N, char * path) if(proclink) { LProc->links[i] = (struct NodeLink *)malloc(sizeof(struct NodeLink)); - memcpy(LProc->links[i], proclink, sizeof(struct NodeLink)); - LProc->ammount++; + if (LProc->links[i] == NULL) { // TODO: What should we do if memory wasn't allocated here? + memcpy(LProc->links[i], proclink, sizeof(struct NodeLink)); + LProc->ammount++; + } free(proclink); } } diff --git a/namesys/resolver.c b/namesys/resolver.c index 5f908cf..70f9ec8 100644 --- a/namesys/resolver.c +++ b/namesys/resolver.c @@ -41,6 +41,10 @@ int ipfs_namesys_resolver_resolve_once(struct IpfsNode* local_node, const char* if (local_node->repo->config->datastore->datastore_get(cid->hash, cid->hash_length, &record, local_node->repo->config->datastore)) { // we are able to handle this locally... return the results *results = (char*) malloc(record->value_size + 1); + if (*results == NULL) { + ipfs_cid_free(cid); + return 0; + } memset(*results, 0, record->value_size + 1); memcpy(*results, record->value, record->value_size); ipfs_cid_free(cid); @@ -64,6 +68,9 @@ int ipfs_namesys_resolver_resolve_once(struct IpfsNode* local_node, const char* int ipfs_namesys_resolver_resolve(struct IpfsNode* local_node, const char* path, int recursive, char** results) { char* result = NULL; char* current_path = (char*) malloc(strlen(path) + 1); + if (current_path == NULL) { + return 0; + } strcpy(current_path, path); // if we go more than 10 deep, bail @@ -84,7 +91,8 @@ int ipfs_namesys_resolver_resolve(struct IpfsNode* local_node, const char* path, // result will not be NULL free(current_path); current_path = (char*) malloc(strlen(result)+1); - strcpy(current_path, result); + if (current_path != NULL) + strcpy(current_path, result); free(result); counter++; } while(recursive && is_ipns_string(current_path)); diff --git a/namesys/routing.c b/namesys/routing.c index 9b61fd8..a8e0c99 100644 --- a/namesys/routing.c +++ b/namesys/routing.c @@ -131,6 +131,8 @@ int ipfs_namesys_hex_string_to_bytes(const unsigned char* hex, unsigned char** b // allocate memory *buffer = (unsigned char*)malloc( hex_size / 2 ); unsigned char* ptr = *buffer; + if (ptr == NULL) + return ErrAllocFailed; // convert string for(size_t i = 0; i < hex_size; i++) { diff --git a/repo/config/addresses.c b/repo/config/addresses.c index 6ef8688..aa17ca2 100644 --- a/repo/config/addresses.c +++ b/repo/config/addresses.c @@ -7,8 +7,10 @@ char* alloc_and_copy(char* source) { unsigned long strLen = strlen(source); char* result = malloc(sizeof(char) * (strLen + 1)); - strncpy(result, source, strLen); - result[strLen] = 0; + if (result != NULL) { + strncpy(result, source, strLen); + result[strLen] = 0; + } return result; } diff --git a/repo/config/config.c b/repo/config/config.c index 9c499e0..6a58ed5 100644 --- a/repo/config/config.c +++ b/repo/config/config.c @@ -140,24 +140,34 @@ int ipfs_repo_config_init(struct RepoConfig* config, unsigned int num_bits_for_k // swarm addresses char* addr1 = malloc(64); - sprintf(addr1, "/ip4/0.0.0.0/tcp/%d", swarm_port); - config->addresses->swarm_head = libp2p_utils_linked_list_new(); - config->addresses->swarm_head->item = malloc(strlen(addr1) + 1); - strcpy(config->addresses->swarm_head->item, addr1); + 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(); - config->addresses->swarm_head->next->item = malloc(strlen(addr1) + 1); - 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); - strcpy(config->addresses->api, addr1); - sprintf(addr1, "/ip4/127.0.0.1/tcp/%d", 8080 + port_adder); - config->addresses->gateway = malloc(strlen(addr1)+1); - strcpy(config->addresses->gateway, addr1); - free(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; diff --git a/repo/config/gateway.c b/repo/config/gateway.c index 557da32..82356e5 100644 --- a/repo/config/gateway.c +++ b/repo/config/gateway.c @@ -6,8 +6,10 @@ char* alloc_and_fill(char* source) { char* newString = malloc(sizeof(char) * (strlen(source) + 1)); - strncpy(newString, source, strlen(source)); - newString[strlen(source)] = 0; + if (newString != NULL) { + strncpy(newString, source, strlen(source)); + newString[strlen(source)] = 0; + } return newString; } diff --git a/repo/fsrepo/fs_repo.c b/repo/fsrepo/fs_repo.c index ae15a82..cc80bc6 100644 --- a/repo/fsrepo/fs_repo.c +++ b/repo/fsrepo/fs_repo.c @@ -150,7 +150,8 @@ int ipfs_repo_fsrepo_new(const char* repo_path, struct RepoConfig* config, struc } else { int len = strlen(repo_path) + 1; (*repo)->path = (char*)malloc(len); - strncpy((*repo)->path, repo_path, len); + if ( (*repo)->path != NULL) + strncpy((*repo)->path, repo_path, len); } // allocate other structures if (config != NULL) @@ -574,10 +575,13 @@ int ipfs_repo_fsrepo_node_get(const unsigned char* hash, size_t hash_length, voi if (retVal == 1) { *node_size = ipfs_hashtable_node_protobuf_encode_size(node); *node_obj = malloc(*node_size); + if (*node_obj == NULL) { + ipfs_hashtable_node_free(node); + return 0; + } retVal = ipfs_hashtable_node_protobuf_encode(node, *node_obj, *node_size, node_size); } - if (node != NULL) - ipfs_hashtable_node_free(node); + ipfs_hashtable_node_free(node); return retVal; } diff --git a/repo/fsrepo/lmdb_datastore.c b/repo/fsrepo/lmdb_datastore.c index a8431af..893f492 100644 --- a/repo/fsrepo/lmdb_datastore.c +++ b/repo/fsrepo/lmdb_datastore.c @@ -220,6 +220,10 @@ int repo_fsrepo_lmdb_put(struct DatastoreRecord* datastore_record, const struct journalstore_record = lmdb_journal_record_new(); journalstore_record->hash_size = datastore_record->key_size; journalstore_record->hash = malloc(datastore_record->key_size); + if (journalstore_record->hash == NULL) { + libp2p_logger_error("lmdb_datastore", "put: Unable to allocate memory for key.\n"); + return 0; + } memcpy(journalstore_record->hash, datastore_record->key, datastore_record->key_size); journalstore_record->timestamp = datastore_record->timestamp; // look up the corresponding journalstore record for possible updating @@ -264,17 +268,23 @@ int repo_fsrepo_lmdb_put(struct DatastoreRecord* datastore_record, const struct // add it to the journalstore journalstore_record = lmdb_journal_record_new(); journalstore_record->hash = (uint8_t*) malloc(datastore_record->key_size); - memcpy(journalstore_record->hash, datastore_record->key, datastore_record->key_size); - journalstore_record->hash_size = datastore_record->key_size; - journalstore_record->timestamp = datastore_record->timestamp; - journalstore_record->pending = 1; // TODO: Calculate this correctly - journalstore_record->pin = 1; - if (!lmdb_journalstore_journal_add(journalstore_cursor, journalstore_record)) { - libp2p_logger_error("lmdb_datastore", "Datastore record was added, but problem adding Journalstore record. Continuing.\n"); + if (journalstore_record->hash == NULL) { + libp2p_logger_error("lmdb_datastore", "Unable to allocate memory to add record to journalstore.\n"); + lmdb_journalstore_cursor_close(journalstore_cursor, 0); + lmdb_journal_record_free(journalstore_record); + } else { + memcpy(journalstore_record->hash, datastore_record->key, datastore_record->key_size); + journalstore_record->hash_size = datastore_record->key_size; + journalstore_record->timestamp = datastore_record->timestamp; + journalstore_record->pending = 1; // TODO: Calculate this correctly + journalstore_record->pin = 1; + if (!lmdb_journalstore_journal_add(journalstore_cursor, journalstore_record)) { + libp2p_logger_error("lmdb_datastore", "Datastore record was added, but problem adding Journalstore record. Continuing.\n"); + } + lmdb_journalstore_cursor_close(journalstore_cursor, 0); + lmdb_journal_record_free(journalstore_record); + retVal = 1; } - lmdb_journalstore_cursor_close(journalstore_cursor, 0); - lmdb_journal_record_free(journalstore_record); - retVal = 1; } } else { // datastore record was unable to be added. @@ -321,10 +331,25 @@ int repo_fsrepro_lmdb_open(int argc, char** argv, struct Datastore* datastore) { } struct lmdb_context *db_context = (struct lmdb_context *) malloc(sizeof(struct lmdb_context)); + if (db_context == NULL) { + mdb_env_close(mdb_env); + return 0; + } datastore->datastore_context = (void*) db_context; db_context->db_environment = (void*)mdb_env; db_context->datastore_db = (MDB_dbi*) malloc(sizeof(MDB_dbi)); + if (db_context->datastore_db == NULL) { + mdb_env_close(mdb_env); + free(db_context); + return 0; + } db_context->journal_db = (MDB_dbi*) malloc(sizeof(MDB_dbi)); + if (db_context->journal_db == NULL) { + free(db_context->datastore_db); + free(db_context); + mdb_env_close(mdb_env); + return 0; + } // open the 2 databases if (mdb_txn_begin(mdb_env, NULL, 0, &db_context->current_transaction) != 0) { diff --git a/repo/fsrepo/lmdb_journalstore.c b/repo/fsrepo/lmdb_journalstore.c index 7eba1f1..1a0c3a2 100644 --- a/repo/fsrepo/lmdb_journalstore.c +++ b/repo/fsrepo/lmdb_journalstore.c @@ -101,8 +101,12 @@ int lmdb_journalstore_build_record(const struct MDB_val* db_key, const struct MD } rec->hash_size = db_value->mv_size - 2; rec->hash = malloc(rec->hash_size); - uint8_t *val = (uint8_t*)db_value->mv_data; - memcpy(rec->hash, &val[2], rec->hash_size); + if (rec->hash != NULL) { + uint8_t *val = (uint8_t*)db_value->mv_data; + memcpy(rec->hash, &val[2], rec->hash_size); + } else { + return 0; + } return 1; } diff --git a/repo/init.c b/repo/init.c index dfbf77c..1669070 100644 --- a/repo/init.c +++ b/repo/init.c @@ -95,7 +95,8 @@ int make_ipfs_repository(const char* path, int swarm_port, struct Libp2pVector* printf("peer identity: %s\n", fs_repo->config->identity->peer->id); if (peer_id != NULL) { *peer_id = malloc(fs_repo->config->identity->peer->id_size + 1); - strcpy(*peer_id, fs_repo->config->identity->peer->id); + if (*peer_id != NULL) + strcpy(*peer_id, fs_repo->config->identity->peer->id); } // make sure the repository exists diff --git a/routing/k_routing.c b/routing/k_routing.c index 084f1e3..622fbd4 100644 --- a/routing/k_routing.c +++ b/routing/k_routing.c @@ -50,6 +50,7 @@ int ipfs_routing_kademlia_get_value(struct IpfsRouting* routing, const unsigned * @returns true(1) on success, otherwise false(0) */ int ipfs_routing_kademlia_find_providers(struct IpfsRouting* routing, const unsigned char* key, size_t key_size, struct Libp2pVector** results) { + int retVal = 1; *results = libp2p_utils_vector_new(1); struct Libp2pVector* vector = *results; // see if I can provide it @@ -70,26 +71,30 @@ int ipfs_routing_kademlia_find_providers(struct IpfsRouting* routing, const unsi if (vector->total == 0) { // search requires null terminated key char* key_nt = malloc(key_size + 1); - strncpy(key_nt, (char*)key, key_size); - key_nt[key_size] = 0; - struct MultiAddress** list = search_kademlia(key_nt, 3); - free(key_nt); - if (list != NULL) { - int i = 0; - while (list[i] != NULL) { - struct MultiAddress* current = list[i]; - libp2p_utils_vector_add(vector, current); - i++; + if (key_nt != NULL) { + strncpy(key_nt, (char*)key, key_size); + key_nt[key_size] = 0; + struct MultiAddress** list = search_kademlia(key_nt, 3); + free(key_nt); + if (list != NULL) { + int i = 0; + while (list[i] != NULL) { + struct MultiAddress* current = list[i]; + libp2p_utils_vector_add(vector, current); + i++; + } } + } else { + retVal = 0; } } if (vector->total == 0) { // we were unable to find it, even on the network libp2p_utils_vector_free(vector); vector = NULL; - return 0; + retVal = 0; } - return 1; + return retVal; } /** diff --git a/routing/offline.c b/routing/offline.c index 9355fb5..53e4f64 100644 --- a/routing/offline.c +++ b/routing/offline.c @@ -97,6 +97,8 @@ int ipfs_routing_generic_get_value (ipfs_routing* routing, const unsigned char * // protobuf the node int protobuf_size = ipfs_hashtable_node_protobuf_encode_size(node); *val = malloc(protobuf_size); + if (*val == NULL) + goto exit; if (ipfs_hashtable_node_protobuf_encode(node, *val, protobuf_size, vlen) == 0) { goto exit; diff --git a/routing/online.c b/routing/online.c index 1f507bb..c4a1a60 100644 --- a/routing/online.c +++ b/routing/online.c @@ -53,12 +53,20 @@ int ipfs_routing_online_find_remote_providers(struct IpfsRouting* routing, const message->message_type = MESSAGE_TYPE_GET_PROVIDERS; message->key_size = key_size; message->key = malloc(message->key_size); + if (message->key == NULL) { + libp2p_message_free(message); + return 0; + } memcpy(message->key, key, message->key_size); - size_t b58size = 100; - uint8_t *b58key = (uint8_t *) malloc(b58size); - libp2p_crypto_encoding_base58_encode((unsigned char*)message->key, message->key_size, (unsigned char**) &b58key, &b58size); - libp2p_logger_debug("online", "find_remote_providers looking for key %s.\n", b58key); - free(b58key); + if (libp2p_logger_watching_class("online")) { + size_t b58size = 100; + uint8_t *b58key = (uint8_t *) malloc(b58size); + if (b58key != NULL) { + libp2p_crypto_encoding_base58_encode((unsigned char*)message->key, message->key_size, (unsigned char**) &b58key, &b58size); + libp2p_logger_debug("online", "find_remote_providers looking for key %s.\n", b58key); + free(b58key); + } + } // loop through the connected peers, asking for the hash struct Libp2pLinkedList* current_entry = routing->local_node->peerstore->head_entry; while (current_entry != NULL) { @@ -246,6 +254,10 @@ int ipfs_routing_online_provide(struct IpfsRouting* routing, const unsigned char struct KademliaMessage* msg = libp2p_message_new(); msg->key_size = key_size; msg->key = malloc(msg->key_size); + if (msg->key == NULL) { + libp2p_message_free(msg); + return 0; + } memcpy(msg->key, key, msg->key_size); msg->message_type = MESSAGE_TYPE_ADD_PROVIDER; msg->provider_peer_head = libp2p_utils_linked_list_new(); @@ -333,6 +345,10 @@ int ipfs_routing_online_get_peer_value(ipfs_routing* routing, const struct Libp2 struct KademliaMessage* msg = libp2p_message_new(); msg->key_size = key_size; msg->key = malloc(msg->key_size); + if (msg->key == NULL) { + libp2p_message_free(msg); + return 0; + } memcpy(msg->key, key, msg->key_size); msg->message_type = MESSAGE_TYPE_GET_VALUE; diff --git a/unixfs/unixfs.c b/unixfs/unixfs.c index c50637a..9ea4e78 100644 --- a/unixfs/unixfs.c +++ b/unixfs/unixfs.c @@ -139,12 +139,14 @@ int ipfs_unixfs_add_data(unsigned char* data, size_t data_length, struct UnixFS* } // debug: display hash - size_t b58size = 100; - uint8_t *b58key = (uint8_t *) malloc(b58size); - if (b58key != NULL) { - libp2p_crypto_encoding_base58_encode(unix_fs->hash, unix_fs->hash_length, &b58key, &b58size); - libp2p_logger_debug("unixfs", "Saving hash of %s to unixfs object.\n", b58key); - free(b58key); + if (libp2p_logger_watching_class("unixfs")) { + size_t b58size = 100; + uint8_t *b58key = (uint8_t *) malloc(b58size); + if (b58key != NULL) { + libp2p_crypto_encoding_base58_encode(unix_fs->hash, unix_fs->hash_length, &b58key, &b58size); + libp2p_logger_debug("unixfs", "Saving hash of %s to unixfs object.\n", b58key); + free(b58key); + } } return 1; @@ -157,6 +159,9 @@ int ipfs_unixfs_add_blocksize(const struct UnixFSBlockSizeNode* blocksize, struc if (last == NULL) { // we're the first one unix_fs->block_size_head = (struct UnixFSBlockSizeNode*)malloc(sizeof(struct UnixFSBlockSizeNode)); + if (unix_fs->block_size_head == NULL) { + return 0; + } unix_fs->block_size_head->block_size = blocksize->block_size; unix_fs->block_size_head->next = NULL; } else { @@ -165,6 +170,8 @@ int ipfs_unixfs_add_blocksize(const struct UnixFSBlockSizeNode* blocksize, struc last = last->next; } last->next = (struct UnixFSBlockSizeNode*)malloc(sizeof(struct UnixFSBlockSizeNode)); + if (last->next == NULL) + return 0; last->next->block_size = blocksize->block_size; last->next->next = NULL; }