serval-dna/rhizome.h

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2011-12-21 09:55:05 +00:00
/*
Serval Distributed Numbering Architecture (DNA)
Copyright (C) 2010 Paul Gardner-Stephen
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <sqlite3.h>
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#include "sha2.h"
#include "strbuf.h"
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#include <sys/stat.h>
#define RHIZOME_MANIFEST_ID_BYTES crypto_sign_edwards25519sha512batch_PUBLICKEYBYTES
#define RHIZOME_MANIFEST_ID_STRLEN (RHIZOME_MANIFEST_ID_BYTES * 2)
#define RHIZOME_BUNDLE_KEY_BYTES crypto_sign_edwards25519sha512batch_SECRETKEYBYTES
#define RHIZOME_BUNDLE_KEY_STRLEN (RHIZOME_BUNDLE_KEY_BYTES * 2)
#define RHIZOME_FILEHASH_BYTES SHA512_DIGEST_LENGTH
#define RHIZOME_FILEHASH_STRLEN (RHIZOME_FILEHASH_BYTES * 2)
#define RHIZOME_CRYPT_KEY_BYTES crypto_stream_xsalsa20_ref_KEYBYTES
#define RHIZOME_CRYPT_KEY_STRLEN (RHIZOME_CRYPT_KEY_BYTES * 2)
#define RHIZOME_CRYPT_PAGE_SIZE 4096
#define RHIZOME_HTTP_PORT 4110
#define RHIZOME_HTTP_PORT_MAX 4150
extern long long rhizome_voice_timeout;
#define RHIZOME_PRIORITY_HIGHEST RHIZOME_PRIORITY_SERVAL_CORE
#define RHIZOME_PRIORITY_SERVAL_CORE 5
#define RHIZOME_PRIORITY_SUBSCRIBED 4
#define RHIZOME_PRIORITY_SERVAL_OPTIONAL 3
#define RHIZOME_PRIORITY_DEFAULT 2
#define RHIZOME_PRIORITY_SERVAL_BULK 1
#define RHIZOME_PRIORITY_NOTINTERESTED 0
#define RHIZOME_IDLE_TIMEOUT 10000
typedef struct rhizome_signature {
unsigned char signature[crypto_sign_edwards25519sha512batch_BYTES
+crypto_sign_edwards25519sha512batch_PUBLICKEYBYTES+1];
int signatureLength;
} rhizome_signature;
#define RHIZOME_BAR_BYTES 32
#define MAX_MANIFEST_VARS 256
#define MAX_MANIFEST_BYTES 8192
typedef struct rhizome_manifest {
int manifest_record_number;
int manifest_bytes;
int manifest_all_bytes;
unsigned char manifestdata[MAX_MANIFEST_BYTES];
unsigned char manifesthash[crypto_hash_sha512_BYTES];
/* CryptoSign key pair for this manifest.
The filename as distributed on Rhizome will be the public key
of this pair, thus ensuring that noone can tamper with a bundle
except the creator. */
unsigned char cryptoSignPublic[crypto_sign_edwards25519sha512batch_PUBLICKEYBYTES];
unsigned char cryptoSignSecret[crypto_sign_edwards25519sha512batch_SECRETKEYBYTES];
int var_count;
char *vars[MAX_MANIFEST_VARS];
char *values[MAX_MANIFEST_VARS];
int sig_count;
/* Parties who have signed this manifest (raw byte format) */
unsigned char *signatories[MAX_MANIFEST_VARS];
/*
0x61 = crypto_sign_edwards25519sha512batch()
*/
unsigned char signatureTypes[MAX_MANIFEST_VARS];
int errors; /* if non-zero, then manifest should not be trusted */
/* Set non-zero after variables have been packed and
signature blocks appended.
All fields below may not be valid until the manifest has been finalised */
int finalised;
/* time-to-live in hops of this manifest. */
int ttl;
/* When finalised, we keep the filehash and maximum priority due to any
group membership handy */
long long fileLength;
int fileHashedP;
char fileHexHash[SHA512_DIGEST_STRING_LENGTH];
int fileHighestPriority;
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/* Absolute path of the file associated with the manifest */
char *dataFileName;
/* Whether the paylaod is encrypted or not */
int payloadEncryption;
/* Whether we have the secret for this manifest on hand */
int haveSecret;
/* Whether the manifest contains a signature that corresponds to the
manifest id (ie public key) */
int selfSigned;
/* Version of the manifest. Typically the number of milliseconds since 1970. */
long long version;
int group_count;
char *groups[MAX_MANIFEST_VARS];
} rhizome_manifest;
/* Supported service identifiers. These go in the 'service' field of every
* manifest, and indicate which application must be used to process the bundle
* after it is received by Rhizome.
*/
#define RHIZOME_SERVICE_FILE "file"
#define RHIZOME_SERVICE_MESHMS "MeshMS1"
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extern long long rhizome_space;
extern int rhizome_fetch_interval_ms;
extern unsigned short rhizome_http_server_port;
int rhizome_configure();
int rhizome_set_datastore_path(const char *path);
const char *rhizome_datastore_path();
int form_rhizome_datastore_path(char * buf, size_t bufsiz, const char *fmt, ...);
int create_rhizome_datastore_dir();
int form_rhizome_import_path(char * buf, size_t bufsiz, const char *fmt, ...);
int create_rhizome_import_dir();
/* Handy statement for forming the path of a rhizome store file in a char buffer whose declaration
* is in scope (so that sizeof(buf) will work). Evaluates to true if the pathname fitted into
* the provided buffer, false (0) otherwise (after logging an error). */
#define FORM_RHIZOME_DATASTORE_PATH(buf,fmt,...) (form_rhizome_datastore_path((buf), sizeof(buf), (fmt), ##__VA_ARGS__))
#define FORM_RHIZOME_IMPORT_PATH(buf,fmt,...) (form_rhizome_import_path((buf), sizeof(buf), (fmt), ##__VA_ARGS__))
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extern sqlite3 *rhizome_db;
int rhizome_opendb();
int rhizome_manifest_createid(rhizome_manifest *m);
int rhizome_strn_is_manifest_id(const char *text);
int rhizome_str_is_manifest_id(const char *text);
int rhizome_strn_is_bundle_key(const char *text);
int rhizome_str_is_bundle_key(const char *text);
int rhizome_strn_is_bundle_crypt_key(const char *text);
int rhizome_str_is_bundle_crypt_key(const char *text);
int rhizome_strn_is_file_hash(const char *text);
int rhizome_str_is_file_hash(const char *text);
int rhizome_write_manifest_file(rhizome_manifest *m, const char *filename);
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int rhizome_manifest_selfsign(rhizome_manifest *m);
int rhizome_drop_stored_file(const char *id,int maximum_priority);
int rhizome_manifest_priority(char *id);
int rhizome_read_manifest_file(rhizome_manifest *m, const char *filename, int bufferPAndSize);
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int rhizome_hash_file(rhizome_manifest *m, const char *filename,char *hash_out);
char *rhizome_manifest_get(const rhizome_manifest *m, const char *var, char *out, int maxlen);
long long rhizome_manifest_get_ll(rhizome_manifest *m, const char *var);
int rhizome_manifest_set_ll(rhizome_manifest *m,char *var,long long value);
int rhizome_manifest_set(rhizome_manifest *m, const char *var, const char *value);
long long rhizome_file_size(char *filename);
void _rhizome_manifest_free(const char *sourcefile,const char *funcname,int line,
rhizome_manifest *m);
#define rhizome_manifest_free(m) _rhizome_manifest_free(__FILE__,__FUNCTION__,__LINE__,m)
rhizome_manifest *_rhizome_new_manifest(const char *file,const char *func,int line);
#define rhizome_new_manifest() _rhizome_new_manifest(__FILE__,__FUNCTION__,__LINE__)
int rhizome_manifest_pack_variables(rhizome_manifest *m);
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int rhizome_store_bundle(rhizome_manifest *m);
int rhizome_manifest_add_group(rhizome_manifest *m,char *groupid);
int rhizome_clean_payload(const char *fileidhex);
int rhizome_store_file(rhizome_manifest *m,const unsigned char *key);
int rhizome_finish_sqlstatement(sqlite3_stmt *statement);
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int rhizome_bundle_import(rhizome_manifest *m_in, rhizome_manifest **m_out,
const char *bundle, int ttl);
int rhizome_manifest_verify(rhizome_manifest *m);
int rhizome_manifest_check_sanity(rhizome_manifest *m_in);
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int rhizome_manifest_check_file(rhizome_manifest *m_in);
int rhizome_manifest_check_duplicate(rhizome_manifest *m_in,rhizome_manifest **m_out);
int rhizome_manifest_bind_id(rhizome_manifest *m_in, const unsigned char *authorSid);
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int rhizome_manifest_bind_file(rhizome_manifest *m_in,const char *filename,int encryptP);
int rhizome_manifest_finalise(rhizome_manifest *m);
int rhizome_add_manifest(rhizome_manifest *m_in,int ttl);
void rhizome_bytes_to_hex_upper(unsigned const char *in, char *out, int byteCount);
int rhizome_find_privatekey(rhizome_manifest *m);
rhizome_signature *rhizome_sign_hash(rhizome_manifest *m, const unsigned char *authorSid);
int sqlite_prepare(sqlite3_stmt **statement, const strbuf stmt);
int sqlite_prepare_loglevel(int log_level, sqlite3_stmt **statement, const strbuf stmt);
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int sqlite_exec_void(const char *sqlformat,...);
int sqlite_exec_void_loglevel(int log_level, const char *sqlformat, ...);
int sqlite_exec_void_strbuf_loglevel(int log_level, const strbuf stmt);
int sqlite_exec_int64(long long *result, const char *sqlformat,...);
int sqlite_exec_strbuf(strbuf sb, const char *sqlformat,...);
double rhizome_manifest_get_double(rhizome_manifest *m,char *var,double default_value);
int rhizome_manifest_extract_signature(rhizome_manifest *m,int *ofs);
int rhizome_update_file_priority(const char *fileid);
int rhizome_find_duplicate(const rhizome_manifest *m, rhizome_manifest **found,
int checkVersionP);
int rhizome_manifest_to_bar(rhizome_manifest *m,unsigned char *bar);
int rhizome_queue_manifest_import(rhizome_manifest *m, struct sockaddr_in *peerip, int *manifest_kept);
int rhizome_list_manifests(const char *service, const char *sender_sid, const char *recipient_sid, int limit, int offset);
int rhizome_retrieve_manifest(const char *manifestid, rhizome_manifest **mp);
int rhizome_retrieve_file(const char *fileid, const char *filepath,
const unsigned char *key);
#define RHIZOME_DONTVERIFY 0
#define RHIZOME_VERIFY 1
int rhizome_fetching_get_fds(struct pollfd *fds,int *fdcount,int fdmax);
int rhizome_manifest_version_cache_lookup(rhizome_manifest *m);
int rhizome_manifest_version_cache_store(rhizome_manifest *m);
int monitor_announce_bundle(rhizome_manifest *m);
int rhizome_bk_xor(const unsigned char *authorSid, // binary
unsigned char bid[crypto_sign_edwards25519sha512batch_PUBLICKEYBYTES],
unsigned char bkin[crypto_sign_edwards25519sha512batch_SECRETKEYBYTES],
unsigned char bkout[crypto_sign_edwards25519sha512batch_SECRETKEYBYTES]);
unsigned char *rhizome_bundle_shared_secret(rhizome_manifest *m);
int rhizome_extract_privatekey(rhizome_manifest *m, const unsigned char *authorSid);
int rhizome_verify_bundle_privatekey(rhizome_manifest *m);
int rhizome_is_self_signed(rhizome_manifest *m);
int rhizome_queue_ignore_manifest(rhizome_manifest *m,
struct sockaddr_in *peerip,int timeout);
int rhizome_ignore_manifest_check(rhizome_manifest *m,
struct sockaddr_in *peerip);
/* one manifest is required per candidate, plus a few spare.
so MAX_RHIZOME_MANIFESTS must be > MAX_CANDIDATES.
*/
#define MAX_RHIZOME_MANIFESTS 24
#define MAX_CANDIDATES 16
int rhizome_suggest_queue_manifest_import(rhizome_manifest *m,
struct sockaddr_in *peerip);