commands-wms.c

   1 /*
   2  * uqmi -- tiny QMI support implementation
   3  *
   4  * Copyright (C) 2014-2015 Felix Fietkau <nbd@openwrt.org>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the
  18  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  * Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include "qmi-message.h"
  23
  24 #define MIN(a,b) (((a)<(b))?(a):(b))
  25 #define CEILDIV(x,y) (((x) + (y) - 1) / (y))
  26
  27 static void cmd_wms_list_messages_cb(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg)
  28 {
  29         struct qmi_wms_list_messages_response res;
  30         void *c;
  31         int i;
  32
  33         qmi_parse_wms_list_messages_response(msg, &res);
  34         c = blobmsg_open_array(&status, NULL);
  35         for (i = 0; i < res.data.message_list_n; i++)
  36                 blobmsg_add_u32(&status, NULL, res.data.message_list[i].memory_index);
  37
  38         blobmsg_close_array(&status, c);
  39 }
  40
  41 static enum qmi_cmd_result
  42 cmd_wms_list_messages_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
  43 {
  44         static struct qmi_wms_list_messages_request mreq = {
  45                 QMI_INIT(storage_type, QMI_WMS_STORAGE_TYPE_UIM),
  46                 QMI_INIT(message_tag, QMI_WMS_MESSAGE_TAG_TYPE_MT_NOT_READ),
  47         };
  48
  49         qmi_set_wms_list_messages_request(msg, &mreq);
  50
  51         return QMI_CMD_REQUEST;
  52 }
  53
  54 static int
  55 put_unicode_char(char *dest, uint16_t c)
  56 {
  57         if (c < 0x80) {
  58                 *dest = c;
  59                 return 1;
  60         } else if (c < 0x800) {
  61                 *(dest++) = 0xc0 | ((c >> 6) & 0x1f);
  62                 *dest = 0x80 | (c & 0x3f);
  63                 return 2;
  64         } else {
  65                 *(dest++) = 0xe0 | ((c >> 12) & 0xf);
  66                 *(dest++) = 0x80 | ((c >> 6) & 0x3f);
  67                 *dest = 0x80 | (c & 0x3f);
  68                 return 3;
  69         }
  70 }
  71
  72
  73 static int
  74 pdu_decode_7bit_char(char *dest, int len, unsigned char c, bool *escape)
  75 {
  76         uint16_t conv_0x20[] = {
  77                 0x0040, 0x00A3, 0x0024, 0x00A5, 0x00E8, 0x00E9, 0x00F9, 0x00EC,
  78                 0x00F2, 0x00E7, 0x000A, 0x00D8, 0x00F8, 0x000D, 0x00C5, 0x00E5,
  79                 0x0394, 0x005F, 0x03A6, 0x0393, 0x039B, 0x03A9, 0x03A0, 0x03A8,
  80                 0x03A3, 0x0398, 0x039E, 0x00A0, 0x00C6, 0x00E6, 0x00DF, 0x00C9,
  81         };
  82         uint16_t conv_0x5b[] = {
  83                 0x00C4, 0x00D6, 0x00D1, 0x00DC, 0x00A7, 0x00BF,
  84         };
  85         uint16_t conv_0x7b[] = {
  86                 0x00E4, 0x00F6, 0x00F1, 0x00FC, 0x00E0
  87         };
  88         int cur_len = 0;
  89         uint16_t outc;
  90
  91         fprintf(stderr, " %02x", c);
  92         dest += len;
  93         if (*escape) {
  94                 *escape = false;
  95                 switch(c) {
  96                 case 0x0A:
  97                         *dest = 0x0C;
  98                         return 1;
  99                 case 0x14:
 100                         *dest = 0x5E;
 101                         return 1;
 102                 case 0x28:
 103                         *dest = 0x7B;
 104                         return 1;
 105                 case 0x29:
 106                         *dest = 0x7D;
 107                         return 1;
 108                 case 0x2F:
 109                         *dest = 0x5C;
 110                         return 1;
 111                 case 0x3C:
 112                         *dest = 0x5B;
 113                         return 1;
 114                 case 0x3D:
 115                         *dest = 0x7E;
 116                         return 1;
 117                 case 0x3E:
 118                         *dest = 0x5D;
 119                         return 1;
 120                 case 0x40:
 121                         *dest = 0x7C;
 122                         return 1;
 123                 case 0x65:
 124                         outc = 0x20AC;
 125                         goto out;
 126                 case 0x1B:
 127                         goto normal;
 128                 default:
 129                         /* invalid */
 130                         *(dest++) = conv_0x20[0x1B];
 131                         cur_len++;
 132                         goto normal;
 133                 }
 134         }
 135
 136         if (c == 0x1b) {
 137                 *escape = true;
 138                 return 0;
 139         }
 140
 141 normal:
 142         if (c < 0x20)
 143                 outc = conv_0x20[(int) c];
 144         else if (c == 0x40)
 145                 outc = 0x00A1;
 146         else if (c >= 0x5b && c <= 0x60)
 147                 outc = conv_0x5b[c - 0x5b];
 148         else if (c >= 0x7b && c <= 0x7f)
 149                 outc = conv_0x7b[c - 0x7b];
 150         else
 151                 outc = c;
 152
 153 out:
 154         return cur_len + put_unicode_char(dest, outc);
 155 }
 156
 157 static int
 158 pdu_decode_7bit_str(char *dest, const unsigned char *data, int data_len, int bit_offset)
 159 {
 160         bool escape = false;
 161         int len = 0;
 162         int i;
 163
 164         fprintf(stderr, "Raw text:");
 165         for (i = 0; i < data_len; i++) {
 166                 int pos = (i + bit_offset) % 7;
 167
 168                 if (pos == 0) {
 169                         len += pdu_decode_7bit_char(dest, len, data[i] & 0x7f, &escape);
 170                 } else {
 171                         if (i)
 172                                 len += pdu_decode_7bit_char(dest, len,
 173                                                             (data[i - 1] >> (7 + 1 - pos)) |
 174                                                             ((data[i] << pos) & 0x7f), &escape);
 175
 176                         if (pos == 6)
 177                                 len += pdu_decode_7bit_char(dest, len, (data[i] >> 1) & 0x7f,
 178                                                             &escape);
 179                 }
 180         }
 181         dest[len] = 0;
 182         fprintf(stderr, "\n");
 183         return len;
 184 }
 185
 186 static int decode_udh(const unsigned char *data)
 187 {
 188         const unsigned char *end;
 189         unsigned int type, len, udh_len;
 190
 191         udh_len = *(data++);
 192         end = data + udh_len;
 193         while (data < end) {
 194                 const unsigned char *val;
 195
 196                 type = data[0];
 197                 len = data[1];
 198                 val = &data[2];
 199                 data += 2 + len;
 200                 if (data > end)
 201                         break;
 202
 203                 switch (type) {
 204                 case 0x00:
 205                         blobmsg_add_u32(&status, "concat_ref", (uint32_t) val[0]);
 206                         blobmsg_add_u32(&status, "concat_part", (uint32_t) val[2]);
 207                         blobmsg_add_u32(&status, "concat_parts", (uint32_t) val[1]);
 208                         break;
 209                 case 0x08:
 210                         blobmsg_add_u32(&status, "concat_ref", (uint32_t) (val[0] << 8 | val[1]));
 211                         blobmsg_add_u32(&status, "concat_part", (uint32_t) val[3]);
 212                         blobmsg_add_u32(&status, "concat_parts", (uint32_t) val[2]);
 213                         break;
 214                 default:
 215                         break;
 216                 }
 217         }
 218
 219         return udh_len + 1;
 220 }
 221
 222 static void decode_7bit_field(char *name, const unsigned char *data, int data_len, int bit_offset)
 223 {
 224         char *dest = blobmsg_alloc_string_buffer(&status, name, 3 * data_len + 2);
 225         pdu_decode_7bit_str(dest, data, CEILDIV(data_len * 7, 8), bit_offset);
 226         dest[data_len] = 0;
 227         blobmsg_add_string_buffer(&status);
 228 }
 229
 230 static char *pdu_add_semioctet(char *str, char val)
 231 {
 232         *str = '0' + (val & 0xf);
 233         if (*str <= '9')
 234                 str++;
 235
 236         *str = '0' + ((val >> 4) & 0xf);
 237         if (*str <= '9')
 238                 str++;
 239
 240         return str;
 241 }
 242
 243 static void
 244 pdu_decode_address(char *str, unsigned char *data, int len)
 245 {
 246         unsigned char toa;
 247
 248         toa = *(data++);
 249         switch (toa & 0x70) {
 250         case 0x50:
 251                 pdu_decode_7bit_str(str, data, len, 0);
 252                 return;
 253         case 0x10:
 254                 *(str++) = '+';
 255                 /* fall through */
 256         default:
 257                 while (len--) {
 258                         str = pdu_add_semioctet(str, *data);
 259                         data++;
 260                 }
 261         }
 262
 263         *str = 0;
 264 }
 265
 266 static void wms_decode_address(char *name, unsigned char *data, int len)
 267 {
 268         char *str = blobmsg_alloc_string_buffer(&status, name, len * 2 + 2);
 269         pdu_decode_address(str, data, len);
 270         blobmsg_add_string_buffer(&status);
 271 }
 272
 273 static void blobmsg_add_hex(struct blob_buf *buf, const char *name, unsigned const char *data, int len)
 274 {
 275         char* str = blobmsg_alloc_string_buffer(buf, name, len * 2 + 1);
 276         for (int i = 0; i < len; i++) {
 277                 str += sprintf(str, "%02x", data[i]);
 278         }
 279         blobmsg_add_string_buffer(buf);
 280 }
 281
 282 #define cmd_wms_delete_message_cb no_cb
 283 static enum qmi_cmd_result
 284 cmd_wms_delete_message_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
 285 {
 286         char *err;
 287         int id;
 288
 289         id = strtoul(arg, &err, 10);
 290         if (err && *err) {
 291                 uqmi_add_error("Invalid message ID");
 292                 return QMI_CMD_EXIT;
 293         }
 294
 295         static struct qmi_wms_delete_request mreq = {
 296                 QMI_INIT(memory_storage, QMI_WMS_STORAGE_TYPE_UIM),
 297                 QMI_INIT(message_mode, QMI_WMS_MESSAGE_MODE_GSM_WCDMA),
 298         };
 299
 300         mreq.set.memory_index = 1;
 301         mreq.data.memory_index = id;
 302
 303         qmi_set_wms_delete_request(msg, &mreq);
 304
 305         return QMI_CMD_REQUEST;
 306 }
 307
 308
 309 static void cmd_wms_get_message_cb(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg)
 310 {
 311         struct qmi_wms_raw_read_response res;
 312         unsigned char *data, *end;
 313         char *str;
 314         int cur_len;
 315         bool sent;
 316         unsigned char first, dcs;
 317         void *c;
 318
 319         qmi_parse_wms_raw_read_response(msg, &res);
 320         c = blobmsg_open_table(&status, NULL);
 321         data = (unsigned char *) res.data.raw_message_data.raw_data;
 322         end = data + res.data.raw_message_data.raw_data_n;
 323
 324         cur_len = *(data++);
 325         if (data + cur_len >= end)
 326                 goto error;
 327
 328         if (cur_len) {
 329                 wms_decode_address("smsc", data, cur_len - 1);
 330                 data += cur_len;
 331         }
 332
 333         if (data + 3 >= end)
 334                 goto error;
 335
 336         first = *(data++);
 337         sent = (first & 0x3) == 1;
 338         if (sent)
 339                 data++;
 340
 341         cur_len = *(data++);
 342         if (data + cur_len >= end)
 343                 goto error;
 344
 345         if (cur_len) {
 346                 cur_len = (cur_len + 1) / 2;
 347                 wms_decode_address(sent ? "receiver" : "sender", data, cur_len);
 348                 data += cur_len + 1;
 349         }
 350
 351         if (data + 3 >= end)
 352                 goto error;
 353
 354         /* Protocol ID */
 355         if (*(data++) != 0)
 356                 goto error;
 357
 358         /* Data Encoding */
 359         dcs = *(data++);
 360
 361         if (dcs & 0x10)
 362                 blobmsg_add_u32(&status, "class", (dcs & 3));
 363
 364         if (sent) {
 365                 /* Message validity */
 366                 data++;
 367         } else {
 368                 if (data + 6 >= end)
 369                         goto error;
 370
 371                 str = blobmsg_alloc_string_buffer(&status, "timestamp", 32);
 372
 373                 /* year */
 374                 *(str++) = '2';
 375                 *(str++) = '0';
 376                 str = pdu_add_semioctet(str, data[0]);
 377                 /* month */
 378                 *(str++) = '-';
 379                 str = pdu_add_semioctet(str, data[1]);
 380                 /* day */
 381                 *(str++) = '-';
 382                 str = pdu_add_semioctet(str, data[2]);
 383
 384                 /* hour */
 385                 *(str++) = ' ';
 386                 str = pdu_add_semioctet(str, data[3]);
 387                 /* minute */
 388                 *(str++) = ':';
 389                 str = pdu_add_semioctet(str, data[4]);
 390                 /* second */
 391                 *(str++) = ':';
 392                 str = pdu_add_semioctet(str, data[5]);
 393                 *str = 0;
 394
 395                 blobmsg_add_string_buffer(&status);
 396
 397                 data += 7;
 398         }
 399
 400         int message_len = *(data++);
 401         int udh_len = 0;
 402         int bit_offset = 0;
 403
 404         /* User Data Header */
 405         if (first & 0x40) {
 406                 udh_len = decode_udh(data);
 407                 data += udh_len;
 408                 bit_offset = udh_len % 7;
 409                 }
 410
 411         if (data >= end)
 412                 goto error;
 413
 414         switch(dcs & 0x0c) {
 415                 case 0x00:
 416                         /* 7 bit GSM alphabet */
 417                         message_len = message_len - CEILDIV(udh_len * 8, 7);
 418                         message_len = MIN(message_len, CEILDIV((end - data) * 8, 7));
 419                         decode_7bit_field("text", data, message_len, bit_offset);
 420                         break;
 421                 case 0x04:
 422                         /* 8 bit data */
 423                         message_len = MIN(message_len - udh_len, end - data);
 424                         blobmsg_add_hex(&status, "data", data, message_len);
 425                         break;
 426                 case 0x08:
 427                         /* 16 bit UCS-2 string */
 428                         message_len = MIN(message_len - udh_len, end - data);
 429                         blobmsg_add_hex(&status, "ucs-2", data, message_len);
 430                         break;
 431                 default:
 432                         goto error;
 433                 }
 434
 435         blobmsg_close_table(&status, c);
 436         return;
 437
 438 error:
 439         blobmsg_close_table(&status, c);
 440         fprintf(stderr, "There was an error reading message.\n");
 441 }
 442
 443 static enum qmi_cmd_result
 444 cmd_wms_get_message_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
 445 {
 446         static struct qmi_wms_raw_read_request mreq = {
 447                 QMI_INIT_SEQUENCE(message_memory_storage_id,
 448                         .storage_type = QMI_WMS_STORAGE_TYPE_UIM,
 449                 ),
 450                 QMI_INIT(message_mode, QMI_WMS_MESSAGE_MODE_GSM_WCDMA),
 451         };
 452         char *err;
 453         int id;
 454
 455         id = strtoul(arg, &err, 10);
 456         if (err && *err) {
 457                 uqmi_add_error("Invalid message ID");
 458                 return QMI_CMD_EXIT;
 459         }
 460
 461         mreq.data.message_memory_storage_id.memory_index = id;
 462         qmi_set_wms_raw_read_request(msg, &mreq);
 463
 464         return QMI_CMD_REQUEST;
 465 }
 466
 467
 468 static void cmd_wms_get_raw_message_cb(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg)
 469 {
 470         struct qmi_wms_raw_read_response res;
 471         unsigned char *data;
 472         char *str;
 473         int i;
 474
 475         qmi_parse_wms_raw_read_response(msg, &res);
 476         data = (unsigned char *) res.data.raw_message_data.raw_data;
 477         str = blobmsg_alloc_string_buffer(&status, NULL, res.data.raw_message_data.raw_data_n * 3);
 478         for (i = 0; i < res.data.raw_message_data.raw_data_n; i++) {
 479                 str += sprintf(str, &" %02x"[i ? 0 : 1], data[i]);
 480         }
 481         blobmsg_add_string_buffer(&status);
 482 }
 483
 484 #define cmd_wms_get_raw_message_prepare cmd_wms_get_message_prepare
 485
 486
 487 static struct {
 488         const char *smsc;
 489         const char *target;
 490         bool flash;
 491 } _send;
 492
 493
 494 #define cmd_wms_send_message_smsc_cb no_cb
 495 static enum qmi_cmd_result
 496 cmd_wms_send_message_smsc_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
 497 {
 498         _send.smsc = arg;
 499         return QMI_CMD_DONE;
 500 }
 501
 502 #define cmd_wms_send_message_target_cb no_cb
 503 static enum qmi_cmd_result
 504 cmd_wms_send_message_target_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
 505 {
 506         _send.target = arg;
 507         return QMI_CMD_DONE;
 508 }
 509
 510 #define cmd_wms_send_message_flash_cb no_cb
 511 static enum qmi_cmd_result
 512 cmd_wms_send_message_flash_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
 513 {
 514         _send.flash = true;
 515         return QMI_CMD_DONE;
 516 }
 517
 518 static int
 519 pdu_encode_semioctet(unsigned char *dest, const char *str)
 520 {
 521         int len = 0;
 522         bool lower = true;
 523
 524         while (*str) {
 525                 char digit = *str - '0';
 526
 527                 if (lower)
 528                         dest[len] = 0xf0 | digit;
 529                 else
 530                         dest[len++] &= (digit << 4) | 0xf;
 531
 532                 lower = !lower;
 533                 str++;
 534         }
 535
 536         return lower ? len : (len + 1);
 537 }
 538
 539 static int
 540 pdu_encode_7bit_str(unsigned char *data, const char *str)
 541 {
 542         unsigned char c;
 543         int len = 0;
 544         int ofs = 0;
 545
 546         while(1) {
 547                 c = *(str++) & 0x7f;
 548                 if (!c)
 549                         break;
 550
 551                 switch(ofs) {
 552                 case 0:
 553                         data[len] = c;
 554                         break;
 555                 default:
 556                         data[len++] |= c << (8 - ofs);
 557                         data[len] = c >> ofs;
 558                         break;
 559                 }
 560
 561                 ofs = (ofs + 1) % 8;
 562         }
 563
 564         return len + 1;
 565 }
 566
 567 static int
 568 pdu_encode_number(unsigned char *dest, const char *str, bool smsc)
 569 {
 570         unsigned char format;
 571         bool ascii = false;
 572         int len = 0;
 573         int i;
 574
 575         dest[len++] = 0;
 576         if (*str == '+') {
 577                 str++;
 578                 format = 0x91;
 579         } else {
 580                 format = 0x81;
 581         }
 582
 583         for (i = 0; str[i]; i++) {
 584                 if (str[i] >= '0' && str[i] <= '9')
 585                         continue;
 586
 587                 ascii = true;
 588                 break;
 589         }
 590
 591         if (ascii)
 592                 format |= 0x40;
 593
 594         dest[len++] = format;
 595         if (!ascii)
 596                 len += pdu_encode_semioctet(&dest[len], str);
 597         else
 598                 len += pdu_encode_7bit_str(&dest[len], str);
 599
 600         if (smsc)
 601                 dest[0] = len - 1;
 602         else
 603                 dest[0] = strlen(str);
 604
 605         return len;
 606 }
 607
 608 static int
 609 pdu_encode_data(unsigned char *dest, const char *str)
 610 {
 611         int len = 0;
 612
 613         dest[len++] = 0;
 614         len += pdu_encode_7bit_str(&dest[len], str);
 615         dest[0] = strlen(str);
 616
 617         return len;
 618 }
 619
 620 #define cmd_wms_send_message_cb no_cb
 621 static enum qmi_cmd_result
 622 cmd_wms_send_message_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
 623 {
 624         static unsigned char buf[512];
 625         static struct qmi_wms_raw_send_request mreq = {
 626                 QMI_INIT_SEQUENCE(raw_message_data,
 627                         .format = QMI_WMS_MESSAGE_FORMAT_GSM_WCDMA_POINT_TO_POINT,
 628                         .raw_data = buf,
 629                 ),
 630         };
 631         unsigned char *cur = buf;
 632         unsigned char first_octet = 0x11;
 633         unsigned char protocol_id = 0x00;
 634         unsigned char dcs = 0x00;
 635
 636         if (!_send.target || !*_send.target) {
 637                 uqmi_add_error("Missing argument");
 638                 return QMI_CMD_EXIT;
 639         }
 640
 641         if ((_send.smsc && strlen(_send.smsc) > 16) || strlen(_send.target) > 16 || strlen(arg) > 160) {
 642                 uqmi_add_error("Argument too long");
 643                 return QMI_CMD_EXIT;
 644         }
 645
 646         if (_send.flash)
 647                 dcs |= 0x10;
 648
 649         if (!_send.smsc || !*_send.smsc)
 650                 *(cur++) = 0;
 651         else
 652                 cur += pdu_encode_number(cur, _send.smsc, true);
 653
 654         *(cur++) = first_octet;
 655         *(cur++) = 0; /* reference */
 656
 657         cur += pdu_encode_number(cur, _send.target, false);
 658         *(cur++) = protocol_id;
 659         *(cur++) = dcs;
 660
 661         *(cur++) = 0xff; /* validity */
 662         cur += pdu_encode_data(cur, arg);
 663
 664         mreq.data.raw_message_data.raw_data_n = cur - buf;
 665         qmi_set_wms_raw_send_request(msg, &mreq);
 666
 667         return QMI_CMD_REQUEST;
 668 }