agorise/c-ipfs
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Fixed some errors and warnings

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This commit is contained in:
John Jones 2017-02-13 08:53:32 -05:00
parent 81fe9305bf
commit 8a2aabc013
4 changed files with 73 additions and 18 deletions
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2
include/ipfs/namesys/routing.h
View file

@ -36,5 +36,5 @@
int ipfs_namesys_routing_check_EOL (struct timespec *ts, struct namesys_pb *pb);
int ipfs_namesys_routing_get_value (char*, char*);
int ipfs_namesys_routing_getpublic_key (char*, struct MultiHash*);
int ipfs_namesys_routing_getpublic_key (char*, unsigned char* multihash, size_t multihash_size);
#endif // IPNS_NAMESYS_ROUTING_H

1
main/Makefile
View file

@ -24,6 +24,7 @@ OBJS = main.o \
../repo/config/config.o ../repo/config/identity.o \
../repo/config/bootstrap_peers.o ../repo/config/datastore.o ../repo/config/gateway.o \
../repo/config/addresses.o ../repo/config/swarm.o ../repo/config/peer.o \
../routing/*.o \
../thirdparty/ipfsaddr/ipfs_addr.o \
../unixfs/unixfs.o \
../../c-protobuf/protobuf.o ../../c-protobuf/varint.o \

80
namesys/routing.c
View file

@ -16,6 +16,7 @@ extern int timespec_get (struct timespec *__ts, int __base)
#include "ipfs/namesys/namesys.h"
#include "ipfs/cid/cid.h"
#include "ipfs/path/path.h"
#include "libp2p/crypto/encoding/base58.h"
char* ipfs_routing_cache_get (char *key, struct ipns_entry *ientry)
{
@ -108,16 +109,44 @@ int ipfs_namesys_routing_resolve_n (char **path, char *name, int depth, struct n
* @param buffer_length the length of the buffer
* @returns 0 on success, otherwise an error code
*/
int ipfs_namesys_bytes_to_hex_string(unsigned char* bytes, size_t bytes_size, char* buffer, size_t buffer_length) {
int ipfs_namesys_bytes_to_hex_string(const unsigned char* bytes, size_t bytes_size, char* buffer, size_t buffer_length) {
if (bytes_size * 2 > buffer_length) {
return ErrInvalidParam;
}
for(size_t i = 0; i < bytes_size; i++) {
sprintf(buffer[i*2], "%02x", bytes[i]);
sprintf(&buffer[i*2], "%02x", bytes[i]);
}
return 0;
}
/***
* Convert a hex string to an array of bytes
* @param hex a null terminated string of bytes in 2 digit hex format
* @param buffer where to put the results. NOTE: this allocates memory
* @param buffer_length the size of the buffer that was allocated
* @returns 0 on success, otherwise an error code
*/
int ipfs_namesys_hex_string_to_bytes(const unsigned char* hex, unsigned char** buffer, size_t* buffer_length) {
size_t hex_size = strlen((char*)hex);
char* pos = (char*)hex;
// sanity check
if (hex_size % 2 != 0)
return ErrInvalidParam;
// allocate memory
*buffer = (unsigned char*)malloc( hex_size / 2 );
unsigned char* ptr = *buffer;
// convert string
for(size_t i = 0; i < hex_size; i++) {
sscanf(pos, "%2hhx", &ptr[i]);
pos += 2;
}
return 0;
}
/***
* Implements resolver. Uses the IPFS routing system to resolve SFS-like names.
*
@ -132,13 +161,12 @@ int ipfs_namesys_bytes_to_hex_string(unsigned char* bytes, size_t bytes_size, ch
int ipfs_namesys_routing_resolve_once (char **path, char *name, int depth, char *prefix, struct namesys_pb *pb)
{
int err, l, s, ok;
struct MultiHash hash;
unsigned char* multihash = NULL;
size_t multihash_size = 0;
char *h, *string, val[8];
char pubkey[60];
if (!path || !name | !prefix) {
if (!path || !name || !prefix) {
return ErrInvalidParam;
}
// log.Debugf("RoutingResolve: '%s'", name)
@ -152,10 +180,12 @@ int ipfs_namesys_routing_resolve_once (char **path, char *name, int depth, char
}
// turn the b58 encoded name into a multihash
err = libp2p_crypto_encoding_base58_decode(name, strlen(name), multihash, multihash_size);
err = libp2p_crypto_encoding_base58_decode((unsigned char*)name, strlen(name), &multihash, &multihash_size);
if (!err) {
// name should be a multihash. if it isn't, error out here.
//log.Warningf("RoutingResolve: bad input hash: [%s]\n", name)
if (multihash != NULL)
free(multihash);
return ErrInvalidParam;
}
@ -165,32 +195,41 @@ int ipfs_namesys_routing_resolve_once (char **path, char *name, int depth, char
s = (multihash_size * 2) + 1;
h = malloc(l + s); // alloc to fit prefix + hexhash + null terminator
if (!h) {
free(multihash);
return ErrAllocFailed;
}
memcpy(h, prefix, l); // copy prefix
if (ipfs_namesys_bytes_to_hex_string(&multihash, multihash_size, h+l, s)) { // hexstring just after prefix.
if (ipfs_namesys_bytes_to_hex_string(multihash, multihash_size, h+l, s)) { // hexstring just after prefix.
free(multihash);
free(h);
return ErrUnknow;
}
err = ipfs_namesys_routing_get_value (val, h);
free(h); // no longer needed
if (err) {
//log.Warning("RoutingResolve get failed.")
free(multihash);
return err;
}
//err = protobuf decode (val, pb.IpnsEntry);
if (err) {
return err;
}
//if (err) {
// return err;
//}
// name should be a public key retrievable from ipfs
err = ipfs_namesys_routing_getpublic_key (pubkey, multihash, multihash_size);
free(multihash); // done with multihash for now
multihash = NULL;
multihash_size = 0;
if (err) {
return err;
}
// check sig with pk
err = libp2p_crypto_verify (ipns_entry_data_for_sig(pb->IpnsEntry), pb->IpnsEntry->signature, &ok);
err = libp2p_crypto_verify(ipns_entry_data_for_sig(pb->IpnsEntry), pb->IpnsEntry->signature, &ok);
if (err || !ok) {
char buf[500];
snprintf(buf, sizeof(buf), Err[ErrInvalidSignatureFmt], pubkey);
@ -207,29 +246,44 @@ int ipfs_namesys_routing_resolve_once (char **path, char *name, int depth, char
// check for old style record:
err = ipfs_namesys_pb_get_value (&string, pb->IpnsEntry);
if (err) {
free(multihash);
return err;
}
err = libp2p_multihash_from_hex_string(string, strlen(string), &hash);
err = ipfs_namesys_hex_string_to_bytes((unsigned char*)string, &multihash, &multihash_size);
if (err) {
if (multihash != NULL)
free(multihash);
return ErrInvalidParam;
}
err = mh_multihash_hash(multihash, multihash_size);
if (err < 0) {
// Not a multihash, probably a new record
err = ipfs_path_parse(*path, string);
if (err) {
free(multihash);
return err;
}
} else {
// Its an old style multihash record
//log.Warning("Detected old style multihash record")
struct Cid *cid;
err = ipfs_cid_new(0, hash.data, hash.size, CID_PROTOBUF, &cid);
struct Cid *cid = NULL;;
err = ipfs_cid_new(0, multihash, multihash_size, CID_PROTOBUF, &cid);
if (err) {
free(multihash);
if (cid != NULL)
ipfs_cid_free(cid);
return err;
}
err = ipfs_path_parse_from_cid (*path, (char*)cid->hash);
if (err) {
free(multihash);
ipfs_cid_free(cid);
return err;
}
ipfs_cid_free(cid);
}
free(multihash);
ipfs_routing_cache_set (name, *path, pb->IpnsEntry);

8
test/cid/test_cid.h
View file

@ -37,11 +37,11 @@ int test_cid_new_free() {
*/
int test_cid_cast_multihash() {
// first, build a multihash
unsigned char* string_to_hash = (unsigned char*)"Hello, World!";
char* string_to_hash = "Hello, World!";
unsigned char hashed[32];
memset(hashed, 0, 32);
// hash the string
libp2p_crypto_hashing_sha256(string_to_hash, strlen((char*)string_to_hash), hashed);
libp2p_crypto_hashing_sha256(string_to_hash, strlen(string_to_hash), hashed);
size_t multihash_size = mh_new_length(MH_H_SHA2_256, 32);
unsigned char multihash[multihash_size];
memset(multihash, 0, multihash_size);
@ -71,11 +71,11 @@ int test_cid_cast_multihash() {
int test_cid_cast_non_multihash() {
// first, build a hash
unsigned char* string_to_hash = (unsigned char*)"Hello, World!";
char* string_to_hash = "Hello, World!";
unsigned char hashed[32];
memset(hashed, 0, 32);
// hash the string
libp2p_crypto_hashing_sha256(string_to_hash, strlen((char*)string_to_hash), hashed);
libp2p_crypto_hashing_sha256(string_to_hash, strlen(string_to_hash), hashed);
// now make it a hash with a version and codec embedded in varints before the hash
size_t array_size = 34; // 32 for the hash, 2 for the 2 varints