static foreign_t
pl_hmac_sha(term_t key, term_t data, term_t mac, term_t options)
{ char *sdata, *skey;
size_t datalen, keylen;
optval opts;
unsigned char digest[SHA2_MAX_DIGEST_SIZE];
if ( !PL_get_nchars(key, &keylen, &skey,
CVT_ATOM|CVT_STRING|CVT_LIST|CVT_EXCEPTION) )
return FALSE;
if ( !PL_get_nchars(data, &datalen, &sdata,
CVT_ATOM|CVT_STRING|CVT_LIST|CVT_EXCEPTION) )
return FALSE;
if ( !sha_options(options, &opts) )
return FALSE;
switch(opts.algorithm)
{ case ALGORITHM_SHA1:
hmac_sha1((unsigned char*)skey, (unsigned long)keylen,
(unsigned char*)sdata, (unsigned long)datalen,
digest, (unsigned long)opts.digest_size);
break;
case ALGORITHM_SHA256:
hmac_sha256((unsigned char*)skey, (unsigned long)keylen,
(unsigned char*)sdata, (unsigned long)datalen,
digest, (unsigned long)opts.digest_size);
break;
default:
return pl_error(NULL, 0, "HMAC-SHA only for SHA-1 and SHA-256",
ERR_DOMAIN, opts.algorithm_term, "algorithm");
}
return PL_unify_list_ncodes(mac, opts.digest_size, (char*)digest);
}
static foreign_t python_f(term_t tmod, term_t fname, term_t tf) {
char *s;
size_t len;
PyObject *pF, *pModule;
/* if an atom, fetch again */
if (PL_is_atom(tmod)) {
PyObject *pName;
if (!PL_get_nchars(fname, &len, &s, CVT_ALL | CVT_EXCEPTION)) {
return FALSE;
}
#if PY_MAJOR_VERSION < 3
pName = PyString_FromString(s);
#else
pName = PyUnicode_FromString(s);
#endif
if (pName == NULL) {
{
return false;
}
}
pModule = PyImport_Import(pName);
PyErr_Clear();
} else if (!(pModule = term_to_python(tmod, true))) {
PyErr_Clear();
{
return false;
}
}
if (!PL_get_nchars(fname, &len, &s, CVT_ALL | CVT_EXCEPTION)) {
{
return false;
}
}
pF = PyObject_GetAttrString(pModule, s);
PyErr_Print();
Py_DECREF(pModule);
if (pF == NULL || !PyCallable_Check(pF)) {
{
return false;
}
}
{
foreign_t rc = python_to_ptr(pF, tf);
return rc;
}
}
static foreign_t
turtle_name(term_t name)
{ char *s;
pl_wchar_t *w;
size_t len;
if ( PL_get_nchars(name, &len, &s, CVT_ATOM) )
{ const char *e = &s[len];
if ( !wcis_name_start_char(s[0]&0xff) )
return FALSE;
for(s++; s<e; s++)
{ if ( !wcis_name_char(s[0]&0xff) )
return FALSE;
}
return TRUE;
} else if ( PL_get_wchars(name, &len, &w, CVT_ATOM|CVT_EXCEPTION) )
{ const pl_wchar_t *e = &w[len];
if ( !wcis_name_start_char(w[0]) )
return FALSE;
for(w++; w<e; w++)
{ if ( !wcis_name_char(w[0]) )
return FALSE;
}
return TRUE;
} else
return FALSE;
}
static foreign_t
turtle_write_uri(term_t Stream, term_t Value)
{ size_t len;
char *s;
pl_wchar_t *w;
IOSTREAM *out;
if ( !PL_get_stream_handle(Stream, &out) )
return FALSE;
if ( PL_get_nchars(Value, &len, &s, CVT_ATOM|CVT_STRING) )
{ const char *e = &s[len];
Sputcode('<', out);
for(; s<e; s++)
{ if ( ttl_put_ucharacter(out, s[0]&0xff) < 0 )
break;
}
Sputcode('>', out);
return PL_release_stream(out);
} else if ( PL_get_wchars(Value, &len, &w, CVT_ATOM|CVT_EXCEPTION) )
{ const pl_wchar_t *e = &w[len];
Sputcode('<', out);
for(; w<e; w++)
{ if ( ttl_put_ucharacter(out, w[0]) < 0 )
break;
}
Sputcode('>', out);
return PL_release_stream(out);
} else
{ PL_release_stream(out);
return FALSE;
}
}
static foreign_t python_run_file(term_t file) {
char *s;
size_t len;
char si[256];
s = si;
if (PL_get_nchars(file, &len, &s, CVT_ALL | CVT_EXCEPTION)) {
#if PY_MAJOR_VERSION < 3
PyObject *PyFileObject = PyFile_FromString(si, "r");
PyRun_SimpleFileEx(PyFile_AsFile(PyFileObject), "test.py", 1);
#else
FILE *f = fopen(s, "r");
if (f == NULL) {
return false;
}
PyRun_SimpleFileEx(f, s, 1);
#endif
{
{
return true;
}
}
}
{
return false;
}
}
static foreign_t
udp_send(term_t Socket, term_t Data, term_t To, term_t Options)
{ struct sockaddr_in sockaddr;
#ifdef __WINDOWS__
int alen = sizeof(sockaddr);
#else
int alen = sizeof(sockaddr);
#endif
int socket;
int flags = 0L;
char *data;
size_t dlen;
ssize_t n;
if ( !PL_get_nchars(Data, &dlen, &data, CVT_ALL|CVT_EXCEPTION) )
return FALSE;
if ( !tcp_get_socket(Socket, &socket) ||
!nbio_get_sockaddr(To, &sockaddr) )
return FALSE;
if ( (n=nbio_sendto(socket, data,
(int)dlen,
flags,
(struct sockaddr*)&sockaddr, alen)) == -1 )
return nbio_error(errno, TCP_ERRNO);
return TRUE;
}
static foreign_t
pl_tipc_subscribe(term_t Socket, term_t Address,
term_t timeout, term_t filter, term_t usr_handle)
{ struct sockaddr_tipc sockaddr;
struct tipc_subscr subscr;
int socket;
unsigned time, filt;
char *handle;
size_t handle_len;
SOCKET fd;
memset(&subscr, 0, sizeof(subscr));
memset(&sockaddr, 0, sizeof(sockaddr));
if ( !tipc_get_socket(Socket, &socket) ||
!nbio_get_tipc_sockaddr(Address, &sockaddr))
return FALSE;
if(sockaddr.addrtype != TIPC_ADDR_NAMESEQ)
return pl_error(NULL, 0, NULL, ERR_DOMAIN, Address, "name_seq/3");
if( !get_uint(timeout, &time))
return pl_error(NULL, 0, NULL, ERR_DOMAIN, timeout, "integer");
if( !get_uint(filter, &filt))
return pl_error(NULL, 0, NULL, ERR_DOMAIN, filter, "integer");
if ( !PL_get_nchars(usr_handle, &handle_len, &handle, CVT_ALL|CVT_EXCEPTION) )
return FALSE;
if(tipc_version > 1)
{ struct tipc_name_seq *p = &subscr.seq,
*p1 = &sockaddr.addr.nameseq;
p->type = htonl(p1->type);
p->lower = htonl(p1->lower);
p->upper = htonl(p1->upper);
subscr.timeout = htonl(time);
subscr.filter = htonl((filt == V1_TIPC_SUB_SERVICE)
? TIPC_SUB_SERVICE
: filt);
} else {
memcpy(&subscr.seq, &sockaddr.addr.nameseq, sizeof(subscr.seq));
subscr.timeout = time;
subscr.filter = filt;
}
memcpy(&subscr.usr_handle, handle,
(handle_len < sizeof(subscr.usr_handle))
? handle_len
: sizeof(subscr.usr_handle));
fd = nbio_fd(socket);
if ( (send(fd, &subscr, sizeof(subscr), 0)) != sizeof(subscr) )
return nbio_error(errno, TCP_ERRNO);
else
return TRUE;
}
static int python_import(term_t mname, term_t mod) {
PyObject *pName, *pModule;
term_t arg = PL_new_term_ref();
char s0[MAXPATHLEN], *s = s0;
while (true) {
size_t len;
len = (MAXPATHLEN - 1) - (s - s0);
if (PL_is_pair(mname)) {
char *sa;
if (!PL_get_arg(1, mname, arg) || !PL_get_atom_chars(arg, &sa) ||
!PL_get_arg(2, mname, mname)) {
return false;
}
s = stpcpy(s, sa);
*s++ = '.';
s[0] = '\0';
} else if (!PL_get_nchars(mname, &len, &s,
CVT_ALL | CVT_EXCEPTION | REP_UTF8)) {
{
return false;
}
} else {
break;
}
}
#if PY_MAJOR_VERSION < 3
pName = PyString_FromString(s0);
#else
pName = PyUnicode_FromString(s0);
#endif
if (pName == NULL) {
{
return false;
}
}
pModule = PyImport_Import(pName);
PyErr_Clear();
Py_DECREF(pName);
if (pModule == NULL) {
#if EXTRA_MESSSAGES
if (PyErr_Occurred())
PyErr_Print();
PyErr_Clear();
#endif
{
return false;
}
}
ActiveModules[active_modules++] = pModule;
{ foreign_t rc = python_to_ptr(pModule, mod);
return rc;
}
}
static foreign_t
pl_prefix_string(term_t ord, term_t pre, term_t t2)
{ OrdTable ot;
char *s1, *s2;
size_t l1, l2;
unsigned int flags = (CVT_ATOM|CVT_STRING|CVT_LIST|BUF_RING|CVT_EXCEPTION);
if ( !get_order_table(ord, &ot) )
return error(ERR_INSTANTIATION, "prefix_string/3", 1, ord);
if ( !PL_get_nchars(pre, &l1, &s1, flags) )
return FALSE;
if ( !PL_get_nchars(t2, &l2, &s2, flags) )
return FALSE;
if ( l1 <= l2 &&
compare_strings(s1, s2, l1, ot) == 0 )
return TRUE;
return FALSE;
}
static int get_null_terminated_string(term_t t, char **s, int flags) {
size_t len;
if (PL_get_nchars(t, &len, s, flags | REP_UTF8 | CVT_EXCEPTION)) {
if (len == strlen(*s)) {
return TRUE;
}
return PL_domain_error("null_terminated_string", t);
}
return FALSE;
}
static foreign_t python_run_command(term_t cmd) {
char *s;
bool rc = false;
size_t len;
char si[256];
s = si;
if (PL_get_nchars(cmd, &len, &s, CVT_ALL | CVT_EXCEPTION)) {
PyRun_SimpleString(s);
rc = true;
}
return rc;
}
static foreign_t
pl_compare_strings(term_t ord, term_t t1, term_t t2, term_t result)
{ OrdTable ot;
char *s1, *s2;
size_t len;
int rval;
unsigned int flags = (CVT_ATOM|CVT_STRING|CVT_LIST|BUF_RING|CVT_EXCEPTION);
if ( !get_order_table(ord, &ot) )
return error(ERR_INSTANTIATION, "compare_strings/4", 1, ord);
if ( !PL_get_nchars(t1, &len, &s1, flags) )
return FALSE;
if ( !PL_get_nchars(t2, &len, &s2, flags) )
return FALSE;
rval = compare_strings(s1, s2, len, ot);
return PL_unify_atom(result,
rval == 0 ? ATOM_eq :
rval < 0 ? ATOM_lt :
ATOM_gt);
}
static foreign_t
snowball(term_t lang, term_t in, term_t out)
{ struct sb_stemmer *stemmer = NULL;
char *s;
size_t len, olen;
const sb_symbol *stemmed;
if ( !get_lang_stemmer(lang, &stemmer) )
return FALSE;
if ( !PL_get_nchars(in, &len, &s,
CVT_ATOM|CVT_STRING|CVT_LIST|REP_UTF8|CVT_EXCEPTION) )
return FALSE;
if ( !(stemmed = sb_stemmer_stem(stemmer, (const sb_symbol*)s, (int)len)) )
return resource_error("memory");
olen = sb_stemmer_length(stemmer);
return PL_unify_chars(out, PL_ATOM|REP_UTF8, olen, (const char*)stemmed);
}
static foreign_t
pl_no_diacritics_atom(term_t in, term_t out)
{ char *s, *to;
size_t len;
wchar_t *ws, *wto;
if (PL_get_nchars(in, &len, &s, CVT_ATOMIC))
{ if ((to = alloca(len+1)))
{ no_diacritics(s, to);
return PL_unify_chars(out, PL_ATOM, len, to);
}
} else
if (PL_get_wchars(in, &len, &ws, CVT_ATOMIC))
{ if ((wto = alloca((len+1)*sizeof(wchar_t))))
{ wno_diacritics(ws, len, wto);
return PL_unify_wchars(out, PL_ATOM, len, wto);
}
}
return FALSE;
}
static foreign_t
md5_hash(term_t from, term_t md5, term_t options)
{ char *data;
size_t datalen;
optval opts;
md5_byte_t digest[16];
md5_state_t state;
if ( !md5_options(options, &opts) )
return FALSE;
if ( !PL_get_nchars(from, &datalen, &data,
CVT_ATOM|CVT_STRING|CVT_LIST|CVT_EXCEPTION|opts.encoding) )
return FALSE;
md5_init(&state);
md5_append(&state, (const md5_byte_t *)data, datalen);
md5_finish(&state, digest);
return md5_unify_digest(md5, digest);
}
static foreign_t
pl_sha_hash_ctx(term_t old_ctx, term_t from, term_t new_ctx, term_t hash)
{ char *data;
size_t datalen;
struct context *cp;
size_t clen;
unsigned char hval[SHA2_MAX_DIGEST_SIZE];
if ( !PL_get_nchars(from, &datalen, &data,
CVT_ATOM|CVT_STRING|CVT_LIST|CVT_EXCEPTION) )
return FALSE;
if ( !PL_get_string_chars(old_ctx, (char **)&cp, &clen) )
return FALSE;
if ( clen != sizeof (*cp)
|| cp->magic != CONTEXT_MAGIC ) {
return pl_error(NULL, 0, "Invalid OldContext passed",
ERR_DOMAIN, old_ctx, "algorithm");
}
if ( cp->opts.algorithm == ALGORITHM_SHA1 )
{ sha1_ctx *c1p = &(cp->context.sha1);
sha1_hash((unsigned char*)data, (unsigned long)datalen, c1p);
if ( !PL_unify_string_nchars(new_ctx, sizeof(*cp), (char*)cp) )
return FALSE;
sha1_end((unsigned char *)hval, c1p);
} else
{ sha2_ctx *c1p = &(cp->context.sha2);
sha2_hash((unsigned char*)data, (unsigned long)datalen, c1p);
if ( !PL_unify_string_nchars(new_ctx, sizeof(*cp), (char*)cp) )
return FALSE;
sha2_end((unsigned char *)hval, c1p);
}
/* . */
return PL_unify_list_ncodes(hash, cp->opts.digest_size, (char*)hval);
}
static int
get_echars_arg_ex(int i, term_t from, term_t arg, echar **sp, size_t *lenp)
{ const echar *s, *e;
if ( !PL_get_arg(i, from, arg) )
return FALSE;
#ifdef __WINDOWS__
if ( !PL_get_wchars(arg, lenp, sp,
CVT_ATOMIC|CVT_EXCEPTION) )
#else
if ( !PL_get_nchars(arg, lenp, sp,
CVT_ATOMIC|CVT_EXCEPTION|REP_FN) )
#endif
return FALSE;
for(s = *sp, e = s+*lenp; s<e; s++)
{ if ( !*s )
return domain_error(arg, "text_non_zero_code");
}
return TRUE;
}
static foreign_t python_o(term_t tmod, term_t fname, term_t tf) {
char *s;
size_t len;
PyObject *pO, *pModule;
pModule = term_to_python(tmod, true);
if (!PL_get_nchars(fname, &len, &s, CVT_ALL | CVT_EXCEPTION)) {
{
return false;
}
}
pO = PyObject_GetAttrString(pModule, s);
if (pO == NULL) {
{
return false;
}
}
{
foreign_t rc = python_to_ptr(pO, tf);
;
return rc;
}
}
static foreign_t
pl_sha_hash(term_t from, term_t hash, term_t options)
{ char *data;
size_t datalen;
optval opts;
unsigned char hval[SHA2_MAX_DIGEST_SIZE];
if ( !sha_options(options, &opts) )
return FALSE;
if ( !PL_get_nchars(from, &datalen, &data,
CVT_ATOM|CVT_STRING|CVT_LIST|CVT_EXCEPTION) )
return FALSE;
if ( opts.algorithm == ALGORITHM_SHA1 )
{ sha1((unsigned char*)hval,
(unsigned char*)data, (unsigned long)datalen);
} else
{ sha2((unsigned char*)hval, (unsigned long) opts.digest_size,
(unsigned char*)data, (unsigned long)datalen);
}
return PL_unify_list_ncodes(hash, opts.digest_size, (char*)hval);
}
static foreign_t
do_quote(term_t in, term_t quoted, char **map, int maxchr)
{ char *inA = NULL;
wchar_t *inW = NULL;
size_t len;
const unsigned char *s;
charbuf buffer;
int changes = 0;
int rc;
if ( !PL_get_nchars(in, &len, &inA, CVT_ATOMIC) &&
!PL_get_wchars(in, &len, &inW, CVT_ATOMIC) )
return sgml2pl_error(ERR_TYPE, "atom", in);
if ( len == 0 )
return PL_unify(in, quoted);
init_buf(&buffer);
if ( inA )
{ for(s = (unsigned char*)inA ; len-- > 0; s++ )
{ int c = *s;
if ( map[c] )
{ if ( !add_str_buf(&buffer, map[c]) )
return FALSE;
changes++;
} else if ( c > maxchr )
{ char buf[10];
sprintf(buf, "&#%d;", c);
if ( !add_str_buf(&buffer, buf) )
return FALSE;
changes++;
} else
{ add_char_buf(&buffer, c);
}
}
if ( changes > 0 )
rc = PL_unify_atom_nchars(quoted, used_buf(&buffer), buffer.bufp);
else
rc = PL_unify(in, quoted);
} else
{ for( ; len-- > 0; inW++ )
{ int c = *inW;
if ( c <= 0xff && map[c] )
{ if ( !add_str_bufW(&buffer, map[c]) )
return FALSE;
changes++;
} else if ( c > maxchr )
{ char buf[10];
sprintf(buf, "&#%d;", c);
if ( !add_str_bufW(&buffer, buf) )
return FALSE;
changes++;
}else
{ add_char_bufW(&buffer, c);
}
}
if ( changes > 0 )
rc = PL_unify_wchars(quoted, PL_ATOM,
used_buf(&buffer)/sizeof(wchar_t),
(wchar_t*)buffer.bufp);
else
rc = PL_unify(in, quoted);
}
free_buf(&buffer);
return rc;
}
int
PL_get_chars_ex(term_t t, char **s, unsigned int flags)
{ return PL_get_nchars(t, NULL, s, flags|CVT_EXCEPTION);
}
int
PL_get_nchars_ex(term_t t, size_t *len, char **s, unsigned int flags)
{ return PL_get_nchars(t, len, s, flags|CVT_EXCEPTION);
}
static foreign_t python_run_script(term_t cmd, term_t fun) {
char si[256], sf[256];
size_t len = 255, len1 = 255;
PyObject *pName, *pModule, *pFunc;
PyObject *pArgs = NULL, *pValue;
char *s;
s = si;
if (PL_get_nchars(cmd, &len, &s, CVT_ALL | CVT_EXCEPTION) &&
(s = sf) != NULL &&
PL_get_nchars(fun, &len1, &s, CVT_ALL | CVT_EXCEPTION)) {
#if PY_MAJOR_VERSION < 3
pName = PyString_FromString("rbm");
#else
// asssumes UTF-8
pName = PyUnicode_FromString("rbm");
#endif
/* Error checking of pName left out */
pModule = PyImport_Import(pName);
PyErr_Clear();
Py_DECREF(pName);
if (pModule != NULL) {
pFunc = PyObject_GetAttrString(pModule, sf);
/* pFunc is a new reference */
if (pFunc && PyCallable_Check(pFunc)) {
pValue = PyObject_CallObject(pFunc, pArgs);
if (pValue != NULL) {
Py_DECREF(pValue);
} else {
Py_DECREF(pFunc);
Py_DECREF(pModule);
PyErr_Print();
fprintf(stderr, "Call failed\n");
{
return false;
}
}
} else {
if (PyErr_Occurred())
PyErr_Print();
fprintf(stderr, "Cannot find function \"%s\"\n", sf);
}
Py_XDECREF(pFunc);
Py_DECREF(pModule);
} else {
PyErr_Print();
{
return false;
}
}
{
return true;
}
}
{
return false;
}
}
static bool get_value(term_t t, clingo_symbol_t *val, int minus) {
switch (PL_term_type(t)) {
case PL_INTEGER: {
int i;
if (PL_get_integer(t, &i)) {
clingo_symbol_create_number(i, val);
return true;
}
return false;
}
case PL_ATOM: {
char *s;
size_t len;
if (PL_get_nchars(t, &len, &s, CVT_ATOM | REP_UTF8 | CVT_EXCEPTION)) {
return clingo_symbol_create_id(s, !minus, val); /* no sign */
}
return false;
}
case PL_STRING: {
char *s;
size_t len;
if (PL_get_nchars(t, &len, &s, CVT_STRING | REP_UTF8 | CVT_EXCEPTION)) {
return clingo_symbol_create_string(s, val);
}
return false;
}
case PL_TERM: {
bool rc;
term_t arg;
atom_t name;
size_t arity; /* TBD: -atom, #const */
clingo_symbol_t *values = NULL;
if (!(rc = get_name_arity(t, &name, &arity))) {
clingo_set_error(clingo_error_runtime, "prolog error");
goto out_term;
}
arg = PL_new_term_ref();
if (name == ATOM_minus && arity == 1) {
if (!(rc = get_value(arg, val, TRUE))) {
goto out_term;
}
} else if (name == ATOM_hash && arity == 1) {
atom_t a;
_PL_get_arg(1, t, arg);
if (!(rc = PL_get_atom_ex(arg, &a))) {
clingo_set_error(clingo_error_runtime, "prolog error");
goto out_term;
}
if (a == ATOM_inf) {
clingo_symbol_create_infimum(val);
} else if (a == ATOM_sup) {
clingo_symbol_create_supremum(val);
} else {
rc = false;
clingo_set_error(clingo_error_runtime, "bad value");
goto out_term;
}
} else {
const char *id = PL_atom_chars(name); /* TBD: errors */
size_t i;
if (!(values = malloc(sizeof(*values) * arity))) {
rc = false;
clingo_set_error(clingo_error_bad_alloc, "memory");
goto out_term;
}
for (i = 0; i < arity; i++) {
_PL_get_arg(i + 1, t, arg);
if (!(rc = get_value(arg, &values[i], FALSE))) {
goto out_term;
}
}
PL_reset_term_refs(arg);
if (!(rc = clingo_symbol_create_function(id, values, arity, !minus,
val))) {
goto out_term;
}
}
out_term:
if (values) {
free(values);
}
return rc;
}
default:
clingo_set_error(clingo_error_runtime, "bad value");
return false;
}
}