| 1 | /* |
| 2 | * Dolda Connect - Modular multiuser Direct Connect-style client |
| 3 | * Copyright (C) 2004 Fredrik Tolf <fredrik@dolda2000.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | #include <Python.h> |
| 20 | #include <sys/poll.h> |
| 21 | #include <doldaconnect/uilib.h> |
| 22 | #include <doldaconnect/uimisc.h> |
| 23 | #include <doldaconnect/utils.h> |
| 24 | #include <wchar.h> |
| 25 | |
| 26 | struct respobj { |
| 27 | PyObject_HEAD |
| 28 | struct dc_response *resp; |
| 29 | }; |
| 30 | |
| 31 | static int fd = -1; |
| 32 | |
| 33 | static void resptype_del(struct respobj *self) |
| 34 | { |
| 35 | dc_freeresp(self->resp); |
| 36 | self->ob_type->tp_free((PyObject *)self); |
| 37 | } |
| 38 | |
| 39 | static PyObject *resp_getcode(struct respobj *self) |
| 40 | { |
| 41 | return(Py_BuildValue("i", self->resp->code)); |
| 42 | } |
| 43 | |
| 44 | static PyObject *resp_gettag(struct respobj *self) |
| 45 | { |
| 46 | return(Py_BuildValue("i", self->resp->tag)); |
| 47 | } |
| 48 | |
| 49 | static PyObject *resp_getcmd(struct respobj *self) |
| 50 | { |
| 51 | return(PyUnicode_FromWideChar(self->resp->cmdname, wcslen(self->resp->cmdname))); |
| 52 | } |
| 53 | |
| 54 | static PyObject *resp_extract(struct respobj *self) |
| 55 | { |
| 56 | int i, o; |
| 57 | PyObject *ret, *sl; |
| 58 | wchar_t *c; |
| 59 | |
| 60 | ret = PyList_New(self->resp->numlines); |
| 61 | for(i = 0; i < self->resp->numlines; i++) { |
| 62 | sl = PyList_New(self->resp->rlines[i].argc); |
| 63 | for(o = 0; o < self->resp->rlines[i].argc; o++) { |
| 64 | c = self->resp->rlines[i].argv[o]; |
| 65 | PyList_SetItem(sl, o, PyUnicode_FromWideChar(c, wcslen(c))); |
| 66 | } |
| 67 | PyList_SetItem(ret, i, sl); |
| 68 | } |
| 69 | return(ret); |
| 70 | } |
| 71 | |
| 72 | static PyObject *resp_intresp(struct respobj *self) |
| 73 | { |
| 74 | int i; |
| 75 | PyObject *ret, *sl; |
| 76 | struct dc_intresp *ires; |
| 77 | |
| 78 | ret = PyList_New(0); |
| 79 | self->resp->curline = 0; |
| 80 | while((ires = dc_interpret(self->resp)) != NULL) { |
| 81 | sl = PyList_New(ires->argc); |
| 82 | for(i = 0; i < ires->argc; i++) { |
| 83 | switch(ires->argv[i].type) { |
| 84 | case 1: |
| 85 | PyList_SetItem(sl, i, PyUnicode_FromWideChar(ires->argv[i].val.str, wcslen(ires->argv[i].val.str))); |
| 86 | break; |
| 87 | case 2: |
| 88 | PyList_SetItem(sl, i, PyInt_FromLong(ires->argv[i].val.num)); |
| 89 | break; |
| 90 | case 3: |
| 91 | PyList_SetItem(sl, i, PyFloat_FromDouble(ires->argv[i].val.flnum)); |
| 92 | break; |
| 93 | } |
| 94 | } |
| 95 | dc_freeires(ires); |
| 96 | PyList_Append(ret, sl); |
| 97 | } |
| 98 | return(ret); |
| 99 | } |
| 100 | |
| 101 | static PyMethodDef respmethods[] = { |
| 102 | {"getcode", (PyCFunction)resp_getcode, METH_NOARGS, |
| 103 | "Get the numerical code from the response"}, |
| 104 | {"gettag", (PyCFunction)resp_gettag, METH_NOARGS, |
| 105 | "Get the tag from the response"}, |
| 106 | {"getcmd", (PyCFunction)resp_getcmd, METH_NOARGS, |
| 107 | "Get the command name from the response"}, |
| 108 | {"extract", (PyCFunction)resp_extract, METH_NOARGS, |
| 109 | "Extract the lines and columns from the response"}, |
| 110 | {"intresp", (PyCFunction)resp_intresp, METH_NOARGS, |
| 111 | "Interpret all the lines from the response with native datatypes"}, |
| 112 | {NULL, NULL, 0, NULL} |
| 113 | }; |
| 114 | |
| 115 | static PyTypeObject resptype = { |
| 116 | PyObject_HEAD_INIT(NULL) |
| 117 | .tp_name = "dolcon.Response", |
| 118 | .tp_basicsize = sizeof(struct respobj), |
| 119 | .tp_flags = Py_TPFLAGS_DEFAULT, |
| 120 | .tp_doc = "Dolda Connect response objects", |
| 121 | .tp_dealloc = (destructor)resptype_del, |
| 122 | .tp_methods = respmethods, |
| 123 | }; |
| 124 | |
| 125 | static struct respobj *makeresp(struct dc_response *resp) |
| 126 | { |
| 127 | struct respobj *new; |
| 128 | |
| 129 | new = (struct respobj *)resptype.tp_alloc(&resptype, 0); |
| 130 | new->resp = resp; |
| 131 | return(new); |
| 132 | } |
| 133 | |
| 134 | static PyObject *mod_connect(PyObject *self, PyObject *args) |
| 135 | { |
| 136 | char *host; |
| 137 | |
| 138 | host = NULL; |
| 139 | if(!PyArg_ParseTuple(args, "|s", &host)) |
| 140 | return(NULL); |
| 141 | if(fd >= 0) |
| 142 | dc_disconnect(); |
| 143 | if((fd = dc_connect(host)) < 0) { |
| 144 | PyErr_SetFromErrno(PyExc_OSError); |
| 145 | return(NULL); |
| 146 | } |
| 147 | return(Py_BuildValue("i", fd)); |
| 148 | } |
| 149 | |
| 150 | static PyObject *mod_disconnect(PyObject *self, PyObject *args) |
| 151 | { |
| 152 | if(fd != -1) { |
| 153 | dc_disconnect(); |
| 154 | fd = -1; |
| 155 | } |
| 156 | Py_RETURN_NONE; |
| 157 | } |
| 158 | |
| 159 | static PyObject *mod_connected(PyObject *self, PyObject *args) |
| 160 | { |
| 161 | if(fd == -1) |
| 162 | Py_RETURN_FALSE; |
| 163 | else |
| 164 | Py_RETURN_TRUE; |
| 165 | } |
| 166 | |
| 167 | static PyObject *mod_select(PyObject *self, PyObject *args) |
| 168 | { |
| 169 | struct pollfd pfd; |
| 170 | int timeout, ret; |
| 171 | |
| 172 | timeout = -1; |
| 173 | if(!PyArg_ParseTuple(args, "|i", &timeout)) |
| 174 | return(NULL); |
| 175 | if(fd < 0) { |
| 176 | PyErr_SetString(PyExc_RuntimeError, "Not connected"); |
| 177 | return(NULL); |
| 178 | } |
| 179 | pfd.fd = fd; |
| 180 | pfd.events = POLLIN; |
| 181 | if(dc_wantwrite()) |
| 182 | pfd.events |= POLLOUT; |
| 183 | if((ret = poll(&pfd, 1, timeout)) < 0) { |
| 184 | if(errno == EINTR) |
| 185 | Py_RETURN_FALSE; |
| 186 | dc_disconnect(); |
| 187 | fd = -1; |
| 188 | PyErr_SetFromErrno(PyExc_OSError); |
| 189 | return(NULL); |
| 190 | } |
| 191 | if(((pfd.revents & POLLIN) && dc_handleread()) || ((pfd.revents & POLLOUT) && dc_handlewrite())) { |
| 192 | fd = -1; |
| 193 | if(errno == 0) |
| 194 | Py_RETURN_FALSE; |
| 195 | PyErr_SetFromErrno(PyExc_OSError); |
| 196 | return(NULL); |
| 197 | } |
| 198 | if(ret > 0) |
| 199 | Py_RETURN_TRUE; |
| 200 | Py_RETURN_FALSE; |
| 201 | } |
| 202 | |
| 203 | static PyObject *mod_getresp(PyObject *self, PyObject *args) |
| 204 | { |
| 205 | int tag; |
| 206 | struct dc_response *resp; |
| 207 | |
| 208 | tag = -1; |
| 209 | if(!PyArg_ParseTuple(args, "|i", &tag)) |
| 210 | return(NULL); |
| 211 | if(tag == -1) |
| 212 | resp = dc_getresp(); |
| 213 | else |
| 214 | resp = dc_gettaggedresp(tag); |
| 215 | if(resp == NULL) |
| 216 | Py_RETURN_NONE; |
| 217 | return((PyObject *)makeresp(resp)); |
| 218 | } |
| 219 | |
| 220 | static int qcmd_cb(struct dc_response *resp) |
| 221 | { |
| 222 | PyObject *pycb, *args, *ret; |
| 223 | |
| 224 | pycb = resp->data; |
| 225 | args = Py_BuildValue("(N)", makeresp(resp)); |
| 226 | ret = PyObject_Call(pycb, args, NULL); |
| 227 | Py_DECREF(args); |
| 228 | Py_DECREF(ret); |
| 229 | Py_DECREF(pycb); |
| 230 | return(2); |
| 231 | } |
| 232 | |
| 233 | static PyObject *mod_qcmd(PyObject *self, PyObject *args, PyObject *kwargs) |
| 234 | { |
| 235 | int i, tag; |
| 236 | wchar_t **toks, *tok, *cmd; |
| 237 | size_t tokssize, toksdata, toksize; |
| 238 | PyObject *c, *n, *cb, *ret; |
| 239 | |
| 240 | toks = NULL; |
| 241 | tokssize = toksdata = 0; |
| 242 | cmd = NULL; |
| 243 | ret = NULL; |
| 244 | for(i = 0; i < PySequence_Size(args); i++) { |
| 245 | if((c = PySequence_GetItem(args, i)) == NULL) |
| 246 | goto out; |
| 247 | if(!PyUnicode_Check(c)) { |
| 248 | n = PyUnicode_FromObject(c); |
| 249 | Py_DECREF(c); |
| 250 | if((c = n) == NULL) |
| 251 | goto out; |
| 252 | } |
| 253 | tok = smalloc((toksize = (PyUnicode_GetSize(c) + 1)) * sizeof(*tok)); |
| 254 | tok[PyUnicode_AsWideChar((PyUnicodeObject *)c, tok, toksize)] = L'\0'; |
| 255 | Py_DECREF(c); |
| 256 | if(cmd == NULL) |
| 257 | cmd = tok; |
| 258 | else |
| 259 | addtobuf(toks, tok); |
| 260 | } |
| 261 | if(cmd == NULL) { |
| 262 | PyErr_SetString(PyExc_TypeError, "qcmd needs at least 1 argument"); |
| 263 | goto out; |
| 264 | } |
| 265 | addtobuf(toks, NULL); |
| 266 | ret = NULL; |
| 267 | if(PyMapping_HasKeyString(kwargs, "cb")) { |
| 268 | cb = PyMapping_GetItemString(kwargs, "cb"); |
| 269 | if(PyCallable_Check(cb)) { |
| 270 | ret = PyInt_FromLong(dc_queuecmd(qcmd_cb, cb, cmd, L"%a", toks, NULL)); |
| 271 | } else { |
| 272 | PyErr_SetString(PyExc_TypeError, "Callback must be callable"); |
| 273 | Py_DECREF(cb); |
| 274 | } |
| 275 | } else { |
| 276 | ret = PyInt_FromLong(dc_queuecmd(NULL, NULL, cmd, L"%a", toks, NULL)); |
| 277 | } |
| 278 | |
| 279 | out: |
| 280 | dc_freewcsarr(toks); |
| 281 | if(cmd != NULL) |
| 282 | free(cmd); |
| 283 | return(ret); |
| 284 | } |
| 285 | |
| 286 | static void login_cb(int err, wchar_t *reason, PyObject *cb) |
| 287 | { |
| 288 | char *errstr; |
| 289 | PyObject *args, *pyerr, *pyreason, *ret; |
| 290 | |
| 291 | switch(err) { |
| 292 | case DC_LOGIN_ERR_SUCCESS: |
| 293 | errstr = "success"; |
| 294 | break; |
| 295 | case DC_LOGIN_ERR_NOLOGIN: |
| 296 | errstr = "nologin"; |
| 297 | break; |
| 298 | case DC_LOGIN_ERR_SERVER: |
| 299 | errstr = "server"; |
| 300 | break; |
| 301 | case DC_LOGIN_ERR_USER: |
| 302 | errstr = "user"; |
| 303 | break; |
| 304 | case DC_LOGIN_ERR_CONV: |
| 305 | errstr = "conv"; |
| 306 | break; |
| 307 | case DC_LOGIN_ERR_AUTHFAIL: |
| 308 | errstr = "authfail"; |
| 309 | break; |
| 310 | } |
| 311 | pyerr = PyString_FromString(errstr); |
| 312 | if(reason == NULL) |
| 313 | Py_INCREF(pyreason = Py_None); |
| 314 | else |
| 315 | pyreason = PyUnicode_FromWideChar(reason, wcslen(reason)); |
| 316 | args = PyTuple_Pack(2, pyerr, pyreason); |
| 317 | Py_DECREF(pyerr); Py_DECREF(pyreason); |
| 318 | ret = PyObject_Call(cb, args, NULL); |
| 319 | Py_DECREF(cb); |
| 320 | Py_DECREF(args); |
| 321 | Py_DECREF(ret); |
| 322 | } |
| 323 | |
| 324 | static PyObject *mod_loginasync(PyObject *self, PyObject *args, PyObject *kwargs) |
| 325 | { |
| 326 | int useauthless; |
| 327 | char *username; |
| 328 | PyObject *o, *cb, *conv; |
| 329 | |
| 330 | username = NULL; |
| 331 | conv = NULL; |
| 332 | useauthless = 1; |
| 333 | if(!PyArg_ParseTuple(args, "O|i", &cb, &useauthless)) |
| 334 | return(NULL); |
| 335 | if(!PyCallable_Check(cb)) { |
| 336 | PyErr_SetString(PyExc_TypeError, "Callback must be callable"); |
| 337 | return(NULL); |
| 338 | } |
| 339 | if(PyMapping_HasKeyString(kwargs, "username")) { |
| 340 | o = PyMapping_GetItemString(kwargs, "username"); |
| 341 | username = PyString_AsString(o); |
| 342 | Py_DECREF(o); |
| 343 | if(username == NULL) |
| 344 | return(NULL); |
| 345 | } |
| 346 | if(PyMapping_HasKeyString(kwargs, "conv")) { |
| 347 | conv = PyMapping_GetItemString(kwargs, "conv"); |
| 348 | if(!PyCallable_Check(conv)) { |
| 349 | PyErr_SetString(PyExc_TypeError, "Conv callback must be callable"); |
| 350 | return(NULL); |
| 351 | } |
| 352 | PyErr_SetString(PyExc_NotImplementedError, "Custom conv functions are not yet supported by the Python interface"); |
| 353 | return(NULL); |
| 354 | } |
| 355 | Py_INCREF(cb); |
| 356 | dc_loginasync(username, useauthless, NULL, (void (*)(int, wchar_t *, void *))login_cb, cb); |
| 357 | Py_RETURN_NONE; |
| 358 | } |
| 359 | |
| 360 | static PyObject *mod_lexsexpr(PyObject *self, PyObject *args) |
| 361 | { |
| 362 | PyObject *arg, *se, *ret; |
| 363 | wchar_t **arr, **ap, *buf; |
| 364 | size_t bufsize; |
| 365 | |
| 366 | if(!PyArg_ParseTuple(args, "O", &arg)) |
| 367 | return(NULL); |
| 368 | if((se = PyUnicode_FromObject(arg)) == NULL) |
| 369 | return(NULL); |
| 370 | buf = smalloc((bufsize = (PyUnicode_GetSize(se) + 1)) * sizeof(*buf)); |
| 371 | buf[PyUnicode_AsWideChar((PyUnicodeObject *)se, buf, bufsize)] = L'\0'; |
| 372 | arr = dc_lexsexpr(buf); |
| 373 | free(buf); |
| 374 | Py_DECREF(se); |
| 375 | ret = PyList_New(0); |
| 376 | if(arr != NULL) { |
| 377 | for(ap = arr; *ap; ap++) |
| 378 | PyList_Append(ret, PyUnicode_FromWideChar(*ap, wcslen(*ap))); |
| 379 | dc_freewcsarr(arr); |
| 380 | } |
| 381 | return(ret); |
| 382 | } |
| 383 | |
| 384 | static PyObject *mod_wantwrite(PyObject *self) |
| 385 | { |
| 386 | if(dc_wantwrite()) |
| 387 | Py_RETURN_TRUE; |
| 388 | else |
| 389 | Py_RETURN_FALSE; |
| 390 | } |
| 391 | |
| 392 | static PyObject *mod_checkproto(PyObject *self, PyObject *args) |
| 393 | { |
| 394 | PyObject *tmp; |
| 395 | struct respobj *resp; |
| 396 | int version; |
| 397 | |
| 398 | version = DC_LATEST; |
| 399 | if(!PyArg_ParseTuple(args, "O|i", &tmp, &version)) |
| 400 | return(NULL); |
| 401 | if(!PyObject_TypeCheck(tmp, &resptype)) { |
| 402 | PyErr_SetString(PyExc_TypeError, "first argument must be a response object"); |
| 403 | return(NULL); |
| 404 | } |
| 405 | resp = (struct respobj *)tmp; |
| 406 | if(dc_checkprotocol(resp->resp, version)) |
| 407 | Py_RETURN_FALSE; |
| 408 | else |
| 409 | Py_RETURN_TRUE; |
| 410 | } |
| 411 | |
| 412 | static PyMethodDef methods[] = { |
| 413 | {"connect", mod_connect, METH_VARARGS, |
| 414 | "Connect to a Dolda Connect server"}, |
| 415 | {"disconnect", mod_disconnect, METH_VARARGS, |
| 416 | "Disconnect from the server"}, |
| 417 | {"connected", mod_connected, METH_VARARGS, |
| 418 | "Return a boolean indicated whether there currently is a connection to a server"}, |
| 419 | {"select", mod_select, METH_VARARGS, |
| 420 | "Handle data from the server connection, optionally blocking until something happens"}, |
| 421 | {"getresp", mod_getresp, METH_VARARGS, |
| 422 | "Get a queued response object"}, |
| 423 | {"qcmd", (PyCFunction)mod_qcmd, METH_VARARGS | METH_KEYWORDS, |
| 424 | "Queue a command to be sent to the server"}, |
| 425 | {"loginasync", (PyCFunction)mod_loginasync, METH_VARARGS | METH_KEYWORDS, |
| 426 | "Perform an asynchronous login procedure"}, |
| 427 | {"lexsexpr", mod_lexsexpr, METH_VARARGS, |
| 428 | "Use a standard algorithm to lex a search expression"}, |
| 429 | {"wantwrite", (PyCFunction)mod_wantwrite, METH_NOARGS, |
| 430 | "Return a boolean indicating whether there is output to be fed to the server"}, |
| 431 | {"checkproto", (PyCFunction)mod_checkproto, METH_VARARGS, |
| 432 | "Check so that the connect stanza returned by the server indicates support for the correct revision of the protocol"}, |
| 433 | {NULL, NULL, 0, NULL} |
| 434 | }; |
| 435 | |
| 436 | PyMODINIT_FUNC initdolmod(void) |
| 437 | { |
| 438 | PyObject *m; |
| 439 | |
| 440 | if(PyType_Ready(&resptype) < 0) |
| 441 | return; |
| 442 | m = Py_InitModule("dolmod", methods); |
| 443 | Py_INCREF(&resptype); |
| 444 | PyModule_AddObject(m, "Response", (PyObject *)&resptype); |
| 445 | PyModule_AddObject(m, "latest", Py_BuildValue("i", DC_LATEST)); |
| 446 | dc_init(); |
| 447 | } |