U8_EXPORT u8_string u8_canonical_addr(u8_string spec)
{
u8_byte _hostname[128], *hostname=_hostname; int portno;
u8_string result;
hostname=u8_parse_addr(spec,&portno,hostname,128);
if (strchr(hostname,':'))
result=u8_mkstring("%s::%d",hostname,portno);
else result=u8_mkstring("%s:%d",hostname,portno);
if (hostname!=_hostname) u8_free(hostname);
return result;
}
static u8_string addr_string(int port,unsigned char *addr,int len)
{
if (len==4)
return u8_mkstring
("%d@%d.%d.%d.%d",
port,
(int)addr[0],(int)addr[1],(int)addr[2],(int)addr[3]);
else if (len == 8)
return u8_mkstring
("%d@%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
port,
(int)addr[0],(int)addr[1],(int)addr[2],(int)addr[3],
(int)addr[4],(int)addr[5],(int)addr[6],(int)addr[7]);
else return u8_mkstring("%d@<<Weird address length>>",port);
}
U8_EXPORT u8_string u8_sockaddr_string(struct sockaddr *s)
{
if (s->sa_family==AF_INET) {
struct sockaddr_in *inaddr=(struct sockaddr_in *)s;
return addr_string(ntohs(inaddr->sin_port),
(unsigned char *)&(inaddr->sin_addr),4);}
#if HAVE_SYS_UN_H
else if (s->sa_family==AF_UNIX) {
struct sockaddr_un *unaddr=(struct sockaddr_un *)s;
return u8_mkstring("%s@unix",unaddr->sun_path);}
#endif
#ifdef AF_INET6
else if (s->sa_family==AF_INET6) {
struct sockaddr_in6 *inaddr=(struct sockaddr_in6 *)s;
return addr_string(ntohs(inaddr->sin6_port),
(unsigned char *)&(inaddr->sin6_addr),8);}
#endif
else return u8_strdup("strange sockaddr");
}
U8_EXPORT ssize_t u8_cryptic
(int do_encrypt,const char *cname,
const unsigned char *key,int keylen,
const unsigned char *iv,int ivlen,
u8_block_reader reader,u8_block_writer writer,
void *readstate,void *writestate,
u8_context caller)
{
if (strncasecmp(cname,"rsa",3)==0) {
ENGINE *eng=ENGINE_get_default_RSA();
EVP_PKEY _pkey, *pkey; EVP_PKEY_CTX *ctx;
int pubkeyin=(strncasecmp(cname,"rsapub",6)==0);
const unsigned char *scankey=key;
struct U8_BYTEBUF bb;
int retval=-1;
if (pubkeyin) pkey=d2i_PUBKEY(NULL,&scankey,keylen);
else pkey=d2i_PrivateKey((EVP_PKEY_RSA),NULL,&scankey,keylen);
if (!(pkey)) ctx=NULL;
else {
#if (OPENSSL_VERSION_NUMBER>=0x1000204fL)
ctx=EVP_PKEY_CTX_new(pkey,eng);
#else
ctx=EVP_PKEY_CTX_new(pkey,NULL);
#endif
}
if (ctx) {
memset(&bb,0,sizeof(bb));
bb.u8_direction=u8_output_buffer;
bb.u8_buf=bb.u8_ptr=(u8_byte *)u8_malloc(1024);
bb.u8_lim=(u8_byte *)(bb.u8_buf+1024);
bb.u8_growbuf=1;
fill_bytebuf(&bb,reader,readstate);}
if (!(ctx)) {}
else if ((pubkeyin)?
((do_encrypt)?((retval=EVP_PKEY_encrypt_init(ctx))<0):
((retval=EVP_PKEY_verify_recover_init(ctx))<0)):
((do_encrypt)?((retval=EVP_PKEY_sign_init(ctx))<0):
((retval=EVP_PKEY_decrypt_init(ctx))<0))) {}
else {
unsigned char *in=bb.u8_buf; size_t inlen=bb.u8_ptr-bb.u8_buf;
unsigned char *out=NULL; size_t outlen;
if (pubkeyin) {
if (do_encrypt) retval=EVP_PKEY_encrypt(ctx,NULL,&outlen,in,inlen);
else retval=EVP_PKEY_verify_recover(ctx,NULL,&outlen,in,inlen);}
else if (do_encrypt) retval=EVP_PKEY_sign(ctx,NULL,&outlen,in,inlen);
else retval=EVP_PKEY_decrypt(ctx,NULL,&outlen,in,inlen);
if (retval<0) {}
else if ((out=u8_malloc(outlen))==NULL) {}
else if (pubkeyin) {
if (do_encrypt) retval=EVP_PKEY_encrypt(ctx,out,&outlen,in,inlen);
else retval=EVP_PKEY_verify_recover(ctx,out,&outlen,in,inlen);}
else if (do_encrypt) retval=EVP_PKEY_sign(ctx,out,&outlen,in,inlen);
else retval=EVP_PKEY_decrypt(ctx,out,&outlen,in,inlen);
if (retval<0) {}
else retval=writer(out,outlen,writestate);
if (out) u8_free(out);}
u8_free(bb.u8_buf);
if (retval<0) {
unsigned long err=ERR_get_error(); char buf[512];
buf[0]='\0'; ERR_error_string_n(err,buf,512);
u8_seterr(u8_InternalCryptoError,OPENSSL_CRYPTIC,u8_fromlibc((char *)buf));
ERR_clear_error();}
if (ctx) EVP_PKEY_CTX_free(ctx);
if (pkey) EVP_PKEY_free(pkey);
return retval;}
else {
EVP_CIPHER_CTX ctx;
int inlen, outlen, retval=0;
ssize_t totalout=0, totalin=0;
unsigned char inbuf[1024], outbuf[1024+EVP_MAX_BLOCK_LENGTH];
const EVP_CIPHER *cipher=((cname)?(EVP_get_cipherbyname(cname)):
(EVP_aes_128_cbc()));
if (cipher) {
int needkeylen=EVP_CIPHER_key_length(cipher);
int needivlen=EVP_CIPHER_iv_length(cipher);
int blocksize=EVP_CIPHER_block_size(cipher);
if (blocksize>1024) blocksize=1024;
u8_log(CRYPTO_LOGLEVEL,OPENSSL_CRYPTIC,
" %s cipher=%s, keylen=%d/%d, ivlen=%d/%d, blocksize=%d\n",
((do_encrypt)?("encrypt"):("decrypt")),
cname,keylen,needkeylen,ivlen,needivlen,blocksize);
if ((needivlen)&&(ivlen)&&(ivlen!=needivlen))
return u8_reterr(u8_BadCryptoIV,
((caller)?(caller):(OPENSSL_CRYPTIC)),
u8_mkstring("%d!=%d(%s)",ivlen,needivlen,cname));
memset(&ctx,0,sizeof(ctx));
EVP_CIPHER_CTX_init(&ctx);
retval=EVP_CipherInit(&ctx, cipher, NULL, NULL, do_encrypt);
if (retval==0)
return u8_reterr(u8_CipherInit_Failed,
((caller)?(caller):(OPENSSL_CRYPTIC)),
u8_strdup(cname));
retval=EVP_CIPHER_CTX_set_key_length(&ctx,keylen);
if (retval==0)
return u8_reterr(u8_BadCryptoKey,
((caller)?(caller):(OPENSSL_CRYPTIC)),
u8_mkstring("%d!=%d(%s)",keylen,needkeylen,cname));
if ((needivlen)&&(ivlen!=needivlen))
return u8_reterr(u8_BadCryptoIV,
((caller)?(caller):(OPENSSL_CRYPTIC)),
u8_mkstring("%d!=%d(%s)",ivlen,needivlen,cname));
retval=EVP_CipherInit(&ctx, cipher, key, iv, do_encrypt);
if (retval==0)
return u8_reterr(u8_CipherInit_Failed,
((caller)?(caller):(OPENSSL_CRYPTIC)),
u8_strdup(cname));
while (1) {
inlen = reader(inbuf,blocksize,readstate);
if (inlen <= 0) {
u8_log(CRYPTO_LOGLEVEL,OPENSSL_CRYPTIC,
"Finished %s(%s) with %ld in, %ld out",
((do_encrypt)?("encrypt"):("decrypt")),
cname,totalin,totalout);
break;}
else totalin=totalin+inlen;
if (!(EVP_CipherUpdate(&ctx,outbuf,&outlen,inbuf,inlen))) {
char *details=u8_malloc(256);
unsigned long err=ERR_get_error();
ERR_error_string_n(err,details,256);
EVP_CIPHER_CTX_cleanup(&ctx);
return u8_reterr(u8_InternalCryptoError,
((caller)?(caller):((u8_context)"u8_cryptic")),
details);}
else {
u8_log(CRYPTO_LOGLEVEL,OPENSSL_CRYPTIC,
"%s(%s) consumed %d/%ld bytes, emitted %d/%ld bytes"
" in=<%v>\n out=<%v>",
((do_encrypt)?("encrypt"):("decrypt")),cname,
inlen,totalin,outlen,totalout+outlen,
inbuf,inlen,outbuf,outlen);
writer(outbuf,outlen,writestate);
totalout=totalout+outlen;}}
if (!(EVP_CipherFinal(&ctx,outbuf,&outlen))) {
char *details=u8_malloc(256);
unsigned long err=ERR_get_error();
ERR_error_string_n(err,details,256);
EVP_CIPHER_CTX_cleanup(&ctx);
return u8_reterr(u8_InternalCryptoError,
((caller)?(caller):(OPENSSL_CRYPTIC)),
details);}
else {
writer(outbuf,outlen,writestate);
u8_log(CRYPTO_LOGLEVEL,OPENSSL_CRYPTIC,
"%s(%s) done after consuming %ld/%ld bytes, emitting %ld/%ld bytes"
"\n final out=<%v>",
((do_encrypt)?("encrypt"):("decrypt")),cname,
inlen,totalin,outlen,totalout+outlen,
outbuf,outlen);
EVP_CIPHER_CTX_cleanup(&ctx);
totalout=totalout+outlen;
return totalout;}}
else {
char *details=u8_malloc(256);
unsigned long err=ERR_get_error();
ERR_error_string_n(err,details,256);
return u8_reterr("Unknown cipher",
((caller)?(caller):((u8_context)"u8_cryptic")),
details);}
}
}
U8_EXPORT ssize_t u8_cryptic
(int do_encrypt,const char *cname,
const unsigned char *key,int keylen,
const unsigned char *iv,int ivlen,
u8_block_reader reader,u8_block_writer writer,
void *readstate,void *writestate,
u8_context caller)
{
if (strncasecmp(cname,"rsa",3)==0) {
u8_seterr(_("RSA support NYI"),"u8_cryptic/CommonCrypto",u8_strdup(cname));
return -1;}
else {
CCCryptorRef ctx;
CCOptions options=0;
ssize_t inlen, outlen, totalin=0, totalout=0, retval=0;
unsigned char inbuf[1024], outbuf[1024];
struct U8_CCCIPHER *cipher=get_cipher(cname);
if (cipher) {
size_t blocksize=cipher->cc_blocksize;
ssize_t needivlen=cipher->cc_ivlen;
if (!((keylen<=cipher->cc_keymax)&&(keylen>=cipher->cc_keymin)))
return u8_reterr(u8_BadCryptoKey,
((caller)?(caller):((u8_context)"u8_cryptic")),
u8_mkstring("%d!=[%d,%d](%s)",keylen,
cipher->cc_keymin,cipher->cc_keymax,
cname));
if ((needivlen)&&(ivlen!=needivlen))
return u8_reterr(u8_BadCryptoIV,
((caller)?(caller):(COMMONCRYPTO_CRYPTIC)),
u8_mkstring("%d!=%d(%s)",ivlen,needivlen,cname));
if (needivlen==0) iv=NULL;
memset(&ctx,0,sizeof(ctx));
CCCryptorStatus status=CCCryptorCreate
(((do_encrypt)? (kCCEncrypt) : (kCCDecrypt)),
cipher->cc_algorithm,cipher->cc_opts,key,keylen,iv,&ctx);
u8_log(CRYPTO_LOGLEVEL,COMMONCRYPTO_CRYPTIC,
" %s cipher=%s, keylen=%d/[%d,%d], ivlen=%d, blocksize=%d\n",
((do_encrypt)?("encrypt"):("decrypt")),
cname,keylen,cipher->cc_keymin,cipher->cc_keymax,
ivlen,blocksize);
while (1) {
inlen = reader(inbuf,blocksize,readstate);
if (inlen <= 0) {
u8_log(CRYPTO_LOGLEVEL,COMMONCRYPTO_CRYPTIC,
"Finished %s(%s) with %ld in, %ld out",
((do_encrypt)?("encrypt"):("decrypt")),cname,
totalin,totalout);
break;}
if ((status=CCCryptorUpdate(ctx,inbuf,inlen,outbuf,1024,&outlen))
!=kCCSuccess) {
CCCryptorRelease(ctx);
return u8_reterr(u8_InternalCryptoError,
((caller)?(caller):((u8_context)"u8_cryptic")),
NULL);}
else {
u8_log(CRYPTO_LOGLEVEL,COMMONCRYPTO_CRYPTIC,
"%s(%s) consumed %d/%ld bytes, emitted %d/%ld bytes"
" in=<%v>\n out=<%v>",
((do_encrypt)?("encrypt"):("decrypt")),cname,
inlen,totalin,outlen,totalout+outlen,
inbuf,inlen,outbuf,outlen);
writer(outbuf,outlen,writestate);
totalout=totalout+outlen;}}
if ((status=CCCryptorFinal(ctx,outbuf,1024,&outlen))!=kCCSuccess) {
CCCryptorRelease(ctx);
return u8_reterr(u8_InternalCryptoError,
((caller)?(caller):((u8_context)"u8_cryptic")),
NULL);}
else {
writer(outbuf,outlen,writestate);
u8_log(CRYPTO_LOGLEVEL,COMMONCRYPTO_CRYPTIC,
"%s(%s) done after consuming %ld/%ld bytes, emitting %ld/%ld bytes"
"\n final out=<%v>",
((do_encrypt)?("encrypt"):("decrypt")),cname,
inlen,totalin,outlen,totalout+outlen,
outbuf,outlen);
CCCryptorRelease(ctx);
totalout=totalout+outlen;
return totalout;}}
else return u8_reterr("Unknown cipher",
((caller)?(caller):((u8_context)"u8_cryptic")),
u8_strdup(cname));
}
}
