| 1 | /* |
| 2 | * Dolda Connect - Modular multiuser Direct Connect-style client |
| 3 | * Copyright (C) 2007 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 <stdlib.h> |
| 20 | #include <stdio.h> |
| 21 | #include <sys/poll.h> |
| 22 | #include <errno.h> |
| 23 | #include <libguile.h> |
| 24 | |
| 25 | #ifdef HAVE_CONFIG_H |
| 26 | #include <config.h> |
| 27 | #endif |
| 28 | #include <doldaconnect/uilib.h> |
| 29 | #include <doldaconnect/uimisc.h> |
| 30 | #include <doldaconnect/utils.h> |
| 31 | |
| 32 | struct respsmob |
| 33 | { |
| 34 | struct dc_response *resp; |
| 35 | }; |
| 36 | |
| 37 | struct scmcb |
| 38 | { |
| 39 | SCM subr; |
| 40 | }; |
| 41 | |
| 42 | static int fd = -1; |
| 43 | static scm_t_bits resptype; |
| 44 | |
| 45 | static SCM scm_dc_connect(SCM host) |
| 46 | { |
| 47 | char *chost; |
| 48 | |
| 49 | if(fd >= 0) |
| 50 | dc_disconnect(); |
| 51 | if((host == SCM_UNDEFINED) || (host == SCM_BOOL_F)) |
| 52 | { |
| 53 | chost = NULL; |
| 54 | } else { |
| 55 | SCM_ASSERT(scm_is_string(host), host, SCM_ARG1, "dc-connect"); |
| 56 | chost = scm_to_locale_string(host); |
| 57 | } |
| 58 | fd = dc_connect(chost); |
| 59 | if(chost != NULL) |
| 60 | free(chost); |
| 61 | if(fd < 0) |
| 62 | scm_syserror("dc-connect"); |
| 63 | return(scm_from_int(fd)); |
| 64 | } |
| 65 | |
| 66 | static SCM scm_dc_disconnect(void) |
| 67 | { |
| 68 | dc_disconnect(); |
| 69 | return(scm_from_int(0)); |
| 70 | } |
| 71 | |
| 72 | static SCM scm_dc_connected(void) |
| 73 | { |
| 74 | return((fd == -1)?SCM_BOOL_F:SCM_BOOL_T); |
| 75 | } |
| 76 | |
| 77 | static SCM scm_dc_select(SCM timeout) |
| 78 | { |
| 79 | struct pollfd pfd; |
| 80 | int cto, ret, enob; |
| 81 | |
| 82 | if(timeout == SCM_UNDEFINED) |
| 83 | { |
| 84 | cto = -1; |
| 85 | } else { |
| 86 | SCM_ASSERT(scm_is_integer(timeout), timeout, SCM_ARG1, "dc-select"); |
| 87 | cto = scm_to_int(timeout); |
| 88 | } |
| 89 | if(fd < 0) |
| 90 | scm_syserror_msg("dc-select", "Not connected", SCM_EOL, ENOTCONN); |
| 91 | pfd.fd = fd; |
| 92 | pfd.events = POLLIN; |
| 93 | if(dc_wantwrite()) |
| 94 | pfd.events |= POLLOUT; |
| 95 | if((ret = poll(&pfd, 1, cto)) < 0) |
| 96 | { |
| 97 | if(errno == EINTR) |
| 98 | return(SCM_BOOL_F); |
| 99 | enob = errno; |
| 100 | dc_disconnect(); |
| 101 | errno = enob; |
| 102 | scm_syserror("dc-select"); |
| 103 | } |
| 104 | if(((pfd.revents & POLLIN) && dc_handleread()) || ((pfd.revents & POLLOUT) && dc_handlewrite())) |
| 105 | { |
| 106 | if(errno == 0) |
| 107 | { |
| 108 | fd = -1; |
| 109 | return(SCM_BOOL_F); |
| 110 | } |
| 111 | scm_syserror("dc-select"); |
| 112 | } |
| 113 | return(ret?SCM_BOOL_T:SCM_BOOL_F); |
| 114 | } |
| 115 | |
| 116 | static SCM makerespsmob(struct dc_response *resp) |
| 117 | { |
| 118 | struct respsmob *data; |
| 119 | |
| 120 | data = scm_gc_malloc(sizeof(*data), "respsmob"); |
| 121 | data->resp = resp; |
| 122 | SCM_RETURN_NEWSMOB(resptype, data); |
| 123 | } |
| 124 | |
| 125 | static SCM scm_dc_getresp(SCM tag) |
| 126 | { |
| 127 | struct dc_response *resp; |
| 128 | SCM ret; |
| 129 | |
| 130 | if(tag == SCM_UNDEFINED) |
| 131 | { |
| 132 | if((resp = dc_getresp()) == NULL) |
| 133 | return(SCM_BOOL_F); |
| 134 | } else { |
| 135 | SCM_ASSERT(scm_is_integer(tag), tag, SCM_ARG1, "dc-getresp"); |
| 136 | if((resp = dc_gettaggedresp(scm_to_int(tag))) == NULL) |
| 137 | return(SCM_BOOL_F); |
| 138 | } |
| 139 | ret = makerespsmob(resp); |
| 140 | return(ret); |
| 141 | } |
| 142 | |
| 143 | static SCM scm_dc_extract(SCM scm_resp) |
| 144 | { |
| 145 | int i, o; |
| 146 | struct dc_response *resp; |
| 147 | SCM ret, l, w; |
| 148 | |
| 149 | SCM_ASSERT(SCM_SMOB_PREDICATE(resptype, scm_resp), scm_resp, SCM_ARG1, "dc-extract"); |
| 150 | resp = ((struct respsmob *)SCM_SMOB_DATA(scm_resp))->resp; |
| 151 | ret = SCM_EOL; |
| 152 | ret = scm_cons(scm_cons(scm_str2symbol("cmd"), scm_makfrom0str(icswcstombs(resp->cmdname, "UTF-8", NULL))), ret); |
| 153 | ret = scm_cons(scm_cons(scm_str2symbol("code"), scm_from_int(resp->code)), ret); |
| 154 | ret = scm_cons(scm_cons(scm_str2symbol("tag"), scm_from_int(resp->tag)), ret); |
| 155 | l = SCM_EOL; |
| 156 | for(i = resp->numlines - 1; i >= 0; i--) |
| 157 | { |
| 158 | w = SCM_EOL; |
| 159 | for(o = resp->rlines[i].argc - 1; o >= 0; o--) |
| 160 | w = scm_cons(scm_makfrom0str(icswcstombs(resp->rlines[i].argv[o], "UTF-8", NULL)), w); |
| 161 | l = scm_cons(w, l); |
| 162 | } |
| 163 | ret = scm_cons(scm_cons(scm_str2symbol("resp"), l), ret); |
| 164 | return(ret); |
| 165 | } |
| 166 | |
| 167 | static SCM scm_dc_intresp(SCM scm_resp) |
| 168 | { |
| 169 | int i; |
| 170 | struct dc_response *resp; |
| 171 | struct dc_intresp *ires; |
| 172 | SCM ret; |
| 173 | |
| 174 | SCM_ASSERT(SCM_SMOB_PREDICATE(resptype, scm_resp), scm_resp, SCM_ARG1, "dc-intresp"); |
| 175 | resp = ((struct respsmob *)SCM_SMOB_DATA(scm_resp))->resp; |
| 176 | if((ires = dc_interpret(resp)) == NULL) |
| 177 | return(SCM_BOOL_F); |
| 178 | ret = SCM_EOL; |
| 179 | for(i = ires->argc - 1; i >= 0; i--) |
| 180 | { |
| 181 | switch(ires->argv[i].type) |
| 182 | { |
| 183 | case 1: |
| 184 | ret = scm_cons(scm_makfrom0str(icswcstombs(ires->argv[i].val.str, "UTF-8", NULL)), ret); |
| 185 | break; |
| 186 | case 2: |
| 187 | ret = scm_cons(scm_from_int(ires->argv[i].val.num), ret); |
| 188 | break; |
| 189 | case 3: |
| 190 | ret = scm_cons(scm_from_double(ires->argv[i].val.flnum), ret); |
| 191 | break; |
| 192 | case 4: |
| 193 | ret = scm_cons(scm_from_int64(ires->argv[i].val.num), ret); |
| 194 | break; |
| 195 | } |
| 196 | } |
| 197 | dc_freeires(ires); |
| 198 | return(ret); |
| 199 | } |
| 200 | |
| 201 | static int qcmd_scmcb(struct dc_response *resp) |
| 202 | { |
| 203 | struct scmcb *scmcb; |
| 204 | |
| 205 | scmcb = resp->data; |
| 206 | scm_apply(scmcb->subr, scm_cons(makerespsmob(resp), SCM_EOL), SCM_EOL); |
| 207 | scm_gc_unprotect_object(scmcb->subr); |
| 208 | free(scmcb); |
| 209 | return(2); |
| 210 | } |
| 211 | |
| 212 | static wchar_t *scm_string_to_wcs(SCM str) |
| 213 | { |
| 214 | char *buf; |
| 215 | wchar_t *ret; |
| 216 | |
| 217 | buf = scm_to_locale_string(str); |
| 218 | ret = icmbstowcs(buf, NULL); |
| 219 | free(buf); |
| 220 | return(ret); |
| 221 | } |
| 222 | |
| 223 | static SCM scm_dc_qcmd(SCM argv, SCM callback) |
| 224 | { |
| 225 | int tag, enob; |
| 226 | wchar_t **toks, *tok, *cmd; |
| 227 | size_t tokssize, toksdata; |
| 228 | SCM port; |
| 229 | struct scmcb *scmcb; |
| 230 | |
| 231 | SCM_ASSERT(SCM_CONSP(argv), argv, SCM_ARG1, "dc-qcmd"); |
| 232 | if(callback != SCM_UNDEFINED) |
| 233 | SCM_ASSERT(SCM_CLOSUREP(callback), callback, SCM_ARG2, "dc-qcmd"); |
| 234 | cmd = NULL; |
| 235 | toks = NULL; |
| 236 | tokssize = toksdata = 0; |
| 237 | for(; argv != SCM_EOL; argv = SCM_CDR(argv)) |
| 238 | { |
| 239 | port = scm_open_output_string(); |
| 240 | scm_display(SCM_CAR(argv), port); |
| 241 | if((tok = scm_string_to_wcs(scm_get_output_string(port))) == NULL) |
| 242 | { |
| 243 | enob = errno; |
| 244 | addtobuf(toks, NULL); |
| 245 | dc_freewcsarr(toks); |
| 246 | if(cmd != NULL) |
| 247 | free(cmd); |
| 248 | errno = enob; |
| 249 | scm_syserror("dc-qcmd"); |
| 250 | } |
| 251 | if(cmd == NULL) |
| 252 | cmd = tok; |
| 253 | else |
| 254 | addtobuf(toks, tok); |
| 255 | } |
| 256 | addtobuf(toks, NULL); |
| 257 | if(callback == SCM_UNDEFINED) |
| 258 | { |
| 259 | tag = dc_queuecmd(NULL, NULL, cmd, L"%a", toks, NULL); |
| 260 | } else { |
| 261 | scmcb = scm_malloc(sizeof(*scmcb)); |
| 262 | scm_gc_protect_object(scmcb->subr = callback); |
| 263 | tag = dc_queuecmd(qcmd_scmcb, scmcb, cmd, L"%a", toks, NULL); |
| 264 | } |
| 265 | dc_freewcsarr(toks); |
| 266 | if(cmd != NULL) |
| 267 | free(cmd); |
| 268 | if(tag == -1) { |
| 269 | if(errno == ENOSYS) { |
| 270 | scm_error(scm_str2symbol("no-such-cmd"), "dc-qcmd", "Invalid command name", SCM_EOL, SCM_BOOL_F); |
| 271 | } else if(errno == EINVAL) { |
| 272 | scm_error(scm_str2symbol("illegal-escape"), "dc-qcmd", "Invalid escape sequence", SCM_EOL, SCM_BOOL_F); |
| 273 | } else { |
| 274 | scm_syserror("dc-qcmd"); |
| 275 | } |
| 276 | } else { |
| 277 | return(scm_from_int(tag)); |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | static void login_scmcb(int err, wchar_t *reason, struct scmcb *scmcb) |
| 282 | { |
| 283 | SCM errsym; |
| 284 | |
| 285 | switch(err) |
| 286 | { |
| 287 | case DC_LOGIN_ERR_SUCCESS: |
| 288 | errsym = scm_str2symbol("success"); |
| 289 | break; |
| 290 | case DC_LOGIN_ERR_NOLOGIN: |
| 291 | errsym = scm_str2symbol("nologin"); |
| 292 | break; |
| 293 | case DC_LOGIN_ERR_SERVER: |
| 294 | errsym = scm_str2symbol("server"); |
| 295 | break; |
| 296 | case DC_LOGIN_ERR_USER: |
| 297 | errsym = scm_str2symbol("user"); |
| 298 | break; |
| 299 | case DC_LOGIN_ERR_CONV: |
| 300 | errsym = scm_str2symbol("conv"); |
| 301 | break; |
| 302 | case DC_LOGIN_ERR_AUTHFAIL: |
| 303 | errsym = scm_str2symbol("authfail"); |
| 304 | break; |
| 305 | } |
| 306 | scm_apply(scmcb->subr, scm_cons(errsym, scm_cons((reason == NULL)?SCM_BOOL_F:scm_makfrom0str(icswcstombs(reason, "UTF-8", NULL)), SCM_EOL)), SCM_EOL); |
| 307 | scm_gc_unprotect_object(scmcb->subr); |
| 308 | free(scmcb); |
| 309 | } |
| 310 | |
| 311 | static SCM scm_dc_loginasync(SCM callback, SCM useauthless, SCM username) |
| 312 | { |
| 313 | struct scmcb *scmcb; |
| 314 | char *un; |
| 315 | |
| 316 | SCM_ASSERT(SCM_CLOSUREP(callback), callback, SCM_ARG1, "dc-loginasync"); |
| 317 | scmcb = scm_malloc(sizeof(*scmcb)); |
| 318 | scm_gc_protect_object(scmcb->subr = callback); |
| 319 | if(scm_is_string(username)) |
| 320 | un = scm_to_locale_string(username); |
| 321 | else |
| 322 | un = NULL; |
| 323 | dc_loginasync(un, SCM_NFALSEP(useauthless), NULL, (void (*)(int, wchar_t *, void *))login_scmcb, scmcb); |
| 324 | if(un != NULL) |
| 325 | free(un); |
| 326 | return(SCM_BOOL_T); |
| 327 | } |
| 328 | |
| 329 | static SCM scm_dc_lexsexpr(SCM sexpr) |
| 330 | { |
| 331 | SCM ret; |
| 332 | wchar_t **arr, **ap, *buf; |
| 333 | |
| 334 | SCM_ASSERT(scm_is_string(sexpr), sexpr, SCM_ARG1, "dc-lexsexpr"); |
| 335 | if((buf = scm_string_to_wcs(sexpr)) == NULL) |
| 336 | scm_syserror("dc-lexsexpr"); |
| 337 | arr = dc_lexsexpr(buf); |
| 338 | free(buf); |
| 339 | ret = SCM_EOL; |
| 340 | if(arr != NULL) |
| 341 | { |
| 342 | for(ap = arr; *ap != NULL; ap++) |
| 343 | ret = scm_cons(scm_makfrom0str(icswcstombs(*ap, "UTF-8", NULL)), ret); |
| 344 | dc_freewcsarr(arr); |
| 345 | } |
| 346 | return(scm_reverse(ret)); |
| 347 | } |
| 348 | |
| 349 | static SCM scm_dc_checkproto(SCM resp, SCM version) |
| 350 | { |
| 351 | int ver; |
| 352 | |
| 353 | SCM_ASSERT(SCM_SMOB_PREDICATE(resptype, resp), resp, SCM_ARG1, "dc-checkproto"); |
| 354 | if(version == SCM_UNDEFINED) |
| 355 | { |
| 356 | ver = DC_LATEST; |
| 357 | } else { |
| 358 | SCM_ASSERT(scm_is_integer(version), version, SCM_ARG2, "dc-checkproto"); |
| 359 | ver = scm_to_int(version); |
| 360 | } |
| 361 | if(dc_checkprotocol(((struct respsmob *)SCM_SMOB_DATA(resp))->resp, ver)) |
| 362 | return(SCM_BOOL_F); |
| 363 | else |
| 364 | return(SCM_BOOL_T); |
| 365 | } |
| 366 | |
| 367 | static size_t resp_free(SCM respsmob) |
| 368 | { |
| 369 | struct respsmob *data; |
| 370 | |
| 371 | data = (struct respsmob *)SCM_SMOB_DATA(respsmob); |
| 372 | dc_freeresp(data->resp); |
| 373 | scm_gc_free(data, sizeof(*data), "respsmob"); |
| 374 | return(0); |
| 375 | } |
| 376 | |
| 377 | static int resp_print(SCM respsmob, SCM port, scm_print_state *pstate) |
| 378 | { |
| 379 | struct respsmob *data; |
| 380 | |
| 381 | data = (struct respsmob *)SCM_SMOB_DATA(respsmob); |
| 382 | scm_puts("#<dc-response ", port); |
| 383 | scm_display(scm_from_int(data->resp->tag), port); |
| 384 | scm_puts(" ", port); |
| 385 | scm_puts(icswcstombs(data->resp->cmdname, "UTF-8", NULL), port); |
| 386 | scm_puts(" ", port); |
| 387 | scm_display(scm_from_int(data->resp->code), port); |
| 388 | scm_puts(">", port); |
| 389 | return(1); |
| 390 | } |
| 391 | |
| 392 | void init_guiledc(void) |
| 393 | { |
| 394 | scm_c_define_gsubr("dc-connect", 0, 1, 0, scm_dc_connect); |
| 395 | scm_c_define_gsubr("dc-disconnect", 0, 0, 0, scm_dc_disconnect); |
| 396 | scm_c_define_gsubr("dc-connected", 0, 0, 0, scm_dc_connected); |
| 397 | scm_c_define_gsubr("dc-select", 0, 1, 0, scm_dc_select); |
| 398 | scm_c_define_gsubr("dc-getresp", 0, 1, 0, scm_dc_getresp); |
| 399 | scm_c_define_gsubr("dc-extract", 1, 0, 0, scm_dc_extract); |
| 400 | scm_c_define_gsubr("dc-intresp", 1, 0, 0, scm_dc_intresp); |
| 401 | scm_c_define_gsubr("dc-qcmd", 1, 1, 0, scm_dc_qcmd); |
| 402 | scm_c_define_gsubr("dc-loginasync", 2, 1, 0, scm_dc_loginasync); |
| 403 | scm_c_define_gsubr("dc-lexsexpr", 1, 0, 0, scm_dc_lexsexpr); |
| 404 | scm_c_define_gsubr("dc-checkproto", 1, 1, 0, scm_dc_checkproto); |
| 405 | scm_c_define("dc-latest", scm_from_int(DC_LATEST)); |
| 406 | resptype = scm_make_smob_type("dc-resp", sizeof(struct respsmob)); |
| 407 | scm_set_smob_free(resptype, resp_free); |
| 408 | scm_set_smob_print(resptype, resp_print); |
| 409 | dc_init(); |
| 410 | } |