The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1 | /* Copyright (C) 2007-2008 The Android Open Source Project |
| 2 | ** |
| 3 | ** This software is licensed under the terms of the GNU General Public |
| 4 | ** License version 2, as published by the Free Software Foundation, and |
| 5 | ** may be copied, distributed, and modified under those terms. |
| 6 | ** |
| 7 | ** This program is distributed in the hope that it will be useful, |
| 8 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | ** GNU General Public License for more details. |
| 11 | */ |
| 12 | #include "remote_call.h" |
| 13 | #include "android/utils/bufprint.h" |
| 14 | #include "android/utils/debug.h" |
| 15 | #include "sysdeps.h" |
| 16 | #include "gsm.h" |
| 17 | #include "android/android.h" |
David 'Digit' Turner | cc330d4 | 2013-12-14 23:26:42 +0100 | [diff] [blame] | 18 | #include "android/sockets.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 19 | #include <stdlib.h> |
| 20 | |
| 21 | #define DEBUG 1 |
| 22 | |
| 23 | #if 1 |
| 24 | # define D_ACTIVE VERBOSE_CHECK(modem) |
| 25 | #else |
| 26 | # define D_ACTIVE DEBUG |
| 27 | #endif |
| 28 | |
| 29 | #if 1 |
| 30 | # define S_ACTIVE VERBOSE_CHECK(socket) |
| 31 | #else |
| 32 | # define S_ACTIVE DEBUG |
| 33 | #endif |
| 34 | |
| 35 | #if DEBUG |
| 36 | # include <stdio.h> |
| 37 | # define D(...) do { if (D_ACTIVE) fprintf( stderr, __VA_ARGS__ ); } while (0) |
| 38 | # define S(...) do { if (S_ACTIVE) fprintf( stderr, __VA_ARGS__ ); } while (0) |
| 39 | #else |
| 40 | # define D(...) ((void)0) |
| 41 | # define S(...) ((void)0) |
| 42 | #endif |
| 43 | |
| 44 | /** By convention, remote numbers are the console ports, i.e. 5554, 5556, etc... |
| 45 | **/ |
| 46 | #define REMOTE_NUMBER_BASE 5554 |
| 47 | #define REMOTE_NUMBER_MAX 16 |
| 48 | #define REMOTE_NUMBER_MAX_CHARS 4 |
| 49 | #define REMOTE_CONSOLE_PORT 5554 |
| 50 | |
| 51 | int |
| 52 | remote_number_from_port( int port ) |
| 53 | { |
| 54 | if (port & 1) /* must be even */ |
| 55 | return -1; |
| 56 | |
| 57 | port = (port - REMOTE_CONSOLE_PORT) >> 1; |
| 58 | if ((unsigned)port >= REMOTE_NUMBER_MAX) |
| 59 | return -1; |
| 60 | |
| 61 | return REMOTE_NUMBER_BASE + port*2; |
| 62 | } |
| 63 | |
| 64 | int |
| 65 | remote_number_to_port( int number ) |
| 66 | { |
| 67 | if (number & 1) /* must be even */ |
| 68 | return -1; |
| 69 | |
| 70 | number = (number - REMOTE_NUMBER_BASE) >> 1; |
| 71 | if ((unsigned)number >= REMOTE_NUMBER_MAX) |
| 72 | return -1; |
| 73 | |
| 74 | return REMOTE_CONSOLE_PORT + number*2; |
| 75 | } |
| 76 | |
| 77 | int |
| 78 | remote_number_string_to_port( const char* number ) |
| 79 | { |
| 80 | char* end; |
Marc Petit-Huguenin | a1b379c | 2010-07-14 12:33:15 -0700 | [diff] [blame] | 81 | long num; |
David 'Digit' Turner | 4e024bb | 2010-09-22 14:19:28 +0200 | [diff] [blame] | 82 | const char* temp = number; |
Marc Petit-Huguenin | a1b379c | 2010-07-14 12:33:15 -0700 | [diff] [blame] | 83 | int len; |
| 84 | |
| 85 | len = strlen(number); |
| 86 | if (len > 0 && number[len-1] == ';') |
| 87 | len--; |
| 88 | if (len == 11 && !memcmp(number, PHONE_PREFIX, 7)) |
| 89 | temp += 7; |
| 90 | num = strtol( temp, &end, 10 ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 91 | |
| 92 | if (end == NULL || *end || (int)num != num ) |
| 93 | return -1; |
| 94 | |
| 95 | return remote_number_to_port( (int)num ); |
| 96 | } |
| 97 | |
| 98 | /** REMOTE CALL OBJECTS |
| 99 | **/ |
| 100 | |
| 101 | typedef struct RemoteCallRec { |
| 102 | struct RemoteCallRec* next; |
| 103 | struct RemoteCallRec** pref; |
| 104 | RemoteCallType type; |
| 105 | int to_port; |
| 106 | int from_port; |
| 107 | SysChannel channel; |
| 108 | RemoteResultFunc result_func; |
| 109 | void* result_opaque; |
| 110 | |
| 111 | char quitting; |
| 112 | |
| 113 | /* the output buffer */ |
| 114 | char* buff; |
| 115 | int buff_pos; |
| 116 | int buff_len; |
| 117 | int buff_size; |
| 118 | char buff0[32]; |
| 119 | |
| 120 | } RemoteCallRec, *RemoteCall; |
| 121 | |
| 122 | static void |
| 123 | remote_call_done( RemoteCall call ) |
| 124 | { |
| 125 | call->pref[0] = call->next; |
| 126 | call->next = NULL; |
| 127 | call->pref = &call->next; |
| 128 | |
| 129 | if (call->buff && call->buff != call->buff0) { |
| 130 | free(call->buff); |
| 131 | call->buff = call->buff0; |
| 132 | call->buff_size = (int) sizeof(call->buff0); |
| 133 | } |
| 134 | |
| 135 | if ( call->channel ) { |
| 136 | sys_channel_close( call->channel ); |
| 137 | call->channel = NULL; |
| 138 | } |
| 139 | |
| 140 | call->buff_pos = 0; |
| 141 | call->buff_len = 0; |
| 142 | } |
| 143 | |
| 144 | |
| 145 | static void |
| 146 | remote_call_free( RemoteCall call ) |
| 147 | { |
| 148 | if (call) { |
| 149 | remote_call_done( call ); |
| 150 | free(call); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | |
| 155 | static void remote_call_event( void* opaque, int events ); /* forward */ |
| 156 | |
| 157 | static RemoteCall |
| 158 | remote_call_alloc( RemoteCallType type, int to_port, int from_port ) |
| 159 | { |
| 160 | RemoteCall rcall = calloc( sizeof(*rcall), 1 ); |
| 161 | int from_num = remote_number_from_port(from_port); |
| 162 | |
| 163 | if (rcall != NULL) { |
| 164 | char *p, *end; |
| 165 | |
| 166 | rcall->pref = &rcall->next; |
| 167 | rcall->type = type; |
| 168 | rcall->to_port = to_port; |
| 169 | rcall->from_port = from_port; |
| 170 | rcall->buff = rcall->buff0; |
| 171 | rcall->buff_size = sizeof(rcall->buff0); |
| 172 | rcall->buff_pos = 0; |
| 173 | |
| 174 | p = rcall->buff; |
| 175 | end = p + rcall->buff_size; |
| 176 | |
| 177 | switch (type) { |
| 178 | case REMOTE_CALL_DIAL: |
Marc Petit-Huguenin | a1b379c | 2010-07-14 12:33:15 -0700 | [diff] [blame] | 179 | p = bufprint(p, end, "gsm call " PHONE_PREFIX "%d\n", from_num ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 180 | break; |
| 181 | |
| 182 | case REMOTE_CALL_BUSY: |
Marc Petit-Huguenin | a1b379c | 2010-07-14 12:33:15 -0700 | [diff] [blame] | 183 | p = bufprint(p, end, "gsm busy " PHONE_PREFIX "%d\n", from_num); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 184 | break; |
| 185 | |
| 186 | case REMOTE_CALL_HOLD: |
Marc Petit-Huguenin | a1b379c | 2010-07-14 12:33:15 -0700 | [diff] [blame] | 187 | p = bufprint(p, end, "gsm hold " PHONE_PREFIX "%d\n", from_num); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 188 | break; |
| 189 | |
| 190 | case REMOTE_CALL_ACCEPT: |
Marc Petit-Huguenin | a1b379c | 2010-07-14 12:33:15 -0700 | [diff] [blame] | 191 | p = bufprint(p, end, "gsm accept " PHONE_PREFIX "%d\n", from_num); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 192 | break; |
| 193 | |
| 194 | case REMOTE_CALL_HANGUP: |
Marc Petit-Huguenin | a1b379c | 2010-07-14 12:33:15 -0700 | [diff] [blame] | 195 | p = bufprint(p, end, "gsm cancel " PHONE_PREFIX "%d\n", from_num ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 196 | break; |
| 197 | |
| 198 | default: |
| 199 | ; |
| 200 | } |
| 201 | if (p >= end) { |
| 202 | D("%s: buffer too short\n", __FUNCTION__ ); |
| 203 | remote_call_free(rcall); |
| 204 | return NULL; |
| 205 | } |
| 206 | |
| 207 | rcall->buff_len = p - rcall->buff; |
| 208 | |
| 209 | rcall->channel = sys_channel_create_tcp_client( "localhost", to_port ); |
| 210 | if (rcall->channel == NULL) { |
| 211 | D("%s: could not create channel to port %d\n", __FUNCTION__, to_port); |
| 212 | remote_call_free(rcall); |
| 213 | return NULL; |
| 214 | } |
| 215 | |
| 216 | sys_channel_on( rcall->channel, SYS_EVENT_WRITE, remote_call_event, rcall ); |
| 217 | } |
| 218 | return rcall; |
| 219 | } |
| 220 | |
| 221 | |
| 222 | static int |
| 223 | remote_call_set_sms_pdu( RemoteCall call, |
| 224 | SmsPDU pdu ) |
| 225 | { |
| 226 | char *p, *end; |
| 227 | int msg2len; |
| 228 | |
| 229 | msg2len = 32 + smspdu_to_hex( pdu, NULL, 0 ); |
| 230 | if (msg2len > call->buff_size) { |
| 231 | char* old_buff = call->buff == call->buff0 ? NULL : call->buff; |
| 232 | char* new_buff = realloc( old_buff, msg2len ); |
| 233 | if (new_buff == NULL) { |
| 234 | D("%s: not enough memory to alloc %d bytes", __FUNCTION__, msg2len); |
| 235 | return -1; |
| 236 | } |
| 237 | call->buff = new_buff; |
| 238 | call->buff_size = msg2len; |
| 239 | } |
| 240 | |
| 241 | p = call->buff; |
| 242 | end = p + call->buff_size; |
| 243 | |
| 244 | p = bufprint(p, end, "sms pdu "); |
| 245 | p += smspdu_to_hex( pdu, p, end-p ); |
| 246 | *p++ = '\n'; |
| 247 | *p = 0; |
| 248 | |
| 249 | call->buff_len = p - call->buff; |
| 250 | call->buff_pos = 0; |
| 251 | return 0; |
| 252 | } |
| 253 | |
| 254 | |
| 255 | static void |
| 256 | remote_call_add( RemoteCall call, |
| 257 | RemoteCall *plist ) |
| 258 | { |
| 259 | RemoteCall first = *plist; |
| 260 | |
| 261 | call->next = first; |
| 262 | call->pref = plist; |
| 263 | |
| 264 | if (first) |
| 265 | first->pref = &call->next; |
| 266 | } |
| 267 | |
| 268 | static void |
| 269 | remote_call_event( void* opaque, int events ) |
| 270 | { |
| 271 | RemoteCall call = opaque; |
| 272 | |
| 273 | S("%s: called for call (%d,%d), events=%02x\n", __FUNCTION__, |
| 274 | call->from_port, call->to_port, events); |
| 275 | |
| 276 | if (events & SYS_EVENT_READ) { |
| 277 | /* simply drain the channel */ |
| 278 | char temp[32]; |
| 279 | int n = sys_channel_read( call->channel, temp, sizeof(temp) ); |
| 280 | if (n <= 0) { |
| 281 | /* remote emulator probably quitted */ |
| 282 | //S("%s: emulator %d quitted with %d: %s\n", __FUNCTION__, call->to_port, errno, errno_str); |
| 283 | remote_call_free( call ); |
| 284 | return; |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | if (events & SYS_EVENT_WRITE) { |
| 289 | int n; |
| 290 | |
| 291 | if (S_ACTIVE) { |
| 292 | int nn; |
| 293 | S("%s: call (%d,%d) sending %d bytes '", __FUNCTION__, |
| 294 | call->from_port, call->to_port, call->buff_len - call->buff_pos ); |
| 295 | for (nn = call->buff_pos; nn < call->buff_len; nn++) { |
| 296 | int c = call->buff[nn]; |
| 297 | if (c < 32) { |
| 298 | if (c == '\n') |
| 299 | S("\\n"); |
| 300 | else if (c == '\t') |
| 301 | S("\\t"); |
| 302 | else if (c == '\r') |
| 303 | S("\\r"); |
| 304 | else |
| 305 | S("\\x%02x", c); |
| 306 | } else |
| 307 | S("%c", c); |
| 308 | } |
| 309 | S("'\n"); |
| 310 | } |
| 311 | |
| 312 | n = sys_channel_write( call->channel, |
| 313 | call->buff + call->buff_pos, |
| 314 | call->buff_len - call->buff_pos ); |
| 315 | if (n <= 0) { |
| 316 | /* remote emulator probably quitted */ |
| 317 | S("%s: emulator %d quitted unexpectedly with error %d: %s\n", |
| 318 | __FUNCTION__, call->to_port, errno, errno_str); |
| 319 | if (call->result_func) |
| 320 | call->result_func( call->result_opaque, 0 ); |
| 321 | remote_call_free( call ); |
| 322 | return; |
| 323 | } |
| 324 | call->buff_pos += n; |
| 325 | |
| 326 | if (call->buff_pos >= call->buff_len) { |
| 327 | /* cool, we sent everything */ |
| 328 | S("%s: finished sending data to %d\n", __FUNCTION__, call->to_port); |
| 329 | if (!call->quitting) { |
| 330 | call->quitting = 1; |
| 331 | sprintf( call->buff, "quit\n" ); |
| 332 | call->buff_len = strlen(call->buff); |
| 333 | call->buff_pos = 0; |
| 334 | } else { |
| 335 | call->quitting = 0; |
| 336 | if (call->result_func) |
| 337 | call->result_func( call->result_opaque, 1 ); |
| 338 | |
| 339 | sys_channel_on( call->channel, SYS_EVENT_READ, remote_call_event, call ); |
| 340 | } |
| 341 | } |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | static RemoteCall _the_remote_calls; |
| 346 | |
| 347 | #if 0 |
| 348 | static int |
| 349 | remote_from_number( const char* from ) |
| 350 | { |
| 351 | char* end; |
| 352 | long num = strtol( from, &end, 10 ); |
| 353 | |
| 354 | if (end == NULL || *end) |
| 355 | return -1; |
| 356 | |
| 357 | if ((unsigned)(num - REMOTE_NUMBER_BASE) >= REMOTE_NUMBER_MAX) |
| 358 | return -1; |
| 359 | |
| 360 | return (int) num; |
| 361 | } |
| 362 | #endif |
| 363 | |
| 364 | static RemoteCall |
| 365 | remote_call_generic( RemoteCallType type, const char* to_number, int from_port ) |
| 366 | { |
| 367 | int to_port = remote_number_string_to_port(to_number); |
| 368 | RemoteCall call; |
| 369 | |
| 370 | if ( remote_number_from_port(from_port) < 0 ) { |
| 371 | D("%s: from_port value %d is not valid", __FUNCTION__, from_port); |
| 372 | return NULL; |
| 373 | } |
| 374 | if ( to_port < 0 ) { |
| 375 | D("%s: phone number '%s' is not decimal or remote", __FUNCTION__, to_number); |
| 376 | return NULL; |
| 377 | } |
| 378 | if (to_port == from_port) { |
| 379 | D("%s: trying to call self\n", __FUNCTION__); |
| 380 | return NULL; |
| 381 | } |
| 382 | call = remote_call_alloc( type, to_port, from_port ); |
| 383 | if (call == NULL) { |
| 384 | return NULL; |
| 385 | } |
| 386 | remote_call_add( call, &_the_remote_calls ); |
| 387 | D("%s: adding new call from port %d to port %d\n", __FUNCTION__, from_port, to_port); |
| 388 | return call; |
| 389 | } |
| 390 | |
| 391 | |
| 392 | int |
| 393 | remote_call_dial( const char* number, |
| 394 | int from, |
| 395 | RemoteResultFunc result_func, |
| 396 | void* result_opaque ) |
| 397 | { |
| 398 | RemoteCall call = remote_call_generic( REMOTE_CALL_DIAL, number, from ); |
| 399 | |
| 400 | if (call != NULL) { |
| 401 | call->result_func = result_func; |
| 402 | call->result_opaque = result_opaque; |
| 403 | } |
| 404 | return call ? 0 : -1; |
| 405 | } |
| 406 | |
| 407 | |
| 408 | void |
| 409 | remote_call_other( const char* to_number, int from_port, RemoteCallType type ) |
| 410 | { |
| 411 | remote_call_generic( type, to_number, from_port ); |
| 412 | } |
| 413 | |
| 414 | /* call this function to send a SMS to a remote emulator */ |
| 415 | int |
| 416 | remote_call_sms( const char* number, |
| 417 | int from, |
| 418 | SmsPDU pdu ) |
| 419 | { |
| 420 | RemoteCall call = remote_call_generic( REMOTE_CALL_SMS, number, from ); |
| 421 | |
| 422 | if (call == NULL) |
| 423 | return -1; |
| 424 | |
| 425 | if (call != NULL) { |
| 426 | if ( remote_call_set_sms_pdu( call, pdu ) < 0 ) { |
| 427 | remote_call_free(call); |
| 428 | return -1; |
| 429 | } |
| 430 | } |
| 431 | return call ? 0 : -1; |
| 432 | } |
| 433 | |
| 434 | |
| 435 | void |
| 436 | remote_call_cancel( const char* to_number, int from_port ) |
| 437 | { |
| 438 | remote_call_generic( REMOTE_CALL_HANGUP, to_number, from_port ); |
| 439 | } |