commands-wms.c

   1 #include "qmi-message.h"
   2
   3 static void cmd_wms_list_messages_cb(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg)
   4 {
   5         struct qmi_wms_list_messages_response res;
   6         int i, len = 0;
   7
   8         qmi_parse_wms_list_messages_response(msg, &res);
   9         blobmsg_alloc_string_buffer(&status, "messages", 1);
  10         for (i = 0; i < res.data.message_list_n; i++) {
  11                 len += sprintf(blobmsg_realloc_string_buffer(&status, len + 12) + len,
  12                                " %d" + (len ? 0 : 1),
  13                                            res.data.message_list[i].memory_index);
  14         }
  15         blobmsg_add_string_buffer(&status);
  16 }
  17
  18 static enum qmi_cmd_result
  19 cmd_wms_list_messages_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
  20 {
  21         static struct qmi_wms_list_messages_request mreq = {
  22                 QMI_INIT(storage_type, QMI_WMS_STORAGE_TYPE_UIM),
  23                 QMI_INIT(message_tag, QMI_WMS_MESSAGE_TAG_TYPE_MT_NOT_READ),
  24         };
  25
  26         qmi_set_wms_list_messages_request(msg, &mreq);
  27
  28         return QMI_CMD_REQUEST;
  29 }
  30
  31 static int
  32 pdu_decode_7bit_str(char *dest, const unsigned char *data, int data_len, int bit_offset)
  33 {
  34         char *orig_dest = dest;
  35         int i;
  36
  37         for (i = 0; i < data_len; i++) {
  38                 int pos = (i + bit_offset) % 7;
  39
  40                 if (pos == 0) {
  41                         *(dest++) = data[i] & 0x7f;
  42                 } else {
  43                         if (i)
  44                                 *(dest++) = (data[i - 1] >> (7 + 1 - pos)) |
  45                                             ((data[i] << pos) & 0x7f);
  46
  47                         if (pos == 6)
  48                                 *(dest++) = (data[i] >> 1) & 0x7f;
  49                 }
  50         }
  51         *dest = 0;
  52         return dest - orig_dest;
  53 }
  54
  55 static void decode_udh(const unsigned char *data)
  56 {
  57         const unsigned char *start = data;
  58         const unsigned char *end;
  59         unsigned int type, len;
  60
  61         len = *(data++);
  62         end = data + len;
  63         while (data < end) {
  64                 const unsigned char *val;
  65
  66                 type = data[0];
  67                 len = data[1];
  68                 val = &data[2];
  69                 data += 2 + len;
  70                 if (data > end)
  71                         break;
  72
  73                 switch (type) {
  74                 case 0:
  75                         blobmsg_add_u32(&status, "concat_ref", (uint32_t) val[0]);
  76                         blobmsg_add_u32(&status, "concat_part", (uint32_t) val[2] + 1);
  77                         blobmsg_add_u32(&status, "concat_parts", (uint32_t) val[1]);
  78                         break;
  79                 default:
  80                         break;
  81                 }
  82         }
  83 }
  84
  85 static void decode_7bit_field(char *name, const unsigned char *data, int data_len, bool udh)
  86 {
  87         bool multipart = false;
  88         const unsigned char *udh_start;
  89         char *dest;
  90         int pos_offset = 0;
  91
  92         if (udh) {
  93                 int len = data[0] + 1;
  94
  95                 udh_start = data;
  96                 data += len;
  97                 data_len -= len;
  98                 pos_offset = len % 7;
  99         }
 100
 101         dest = blobmsg_alloc_string_buffer(&status, name, data_len * 8 / 7 + 2);
 102         pdu_decode_7bit_str(dest, data, data_len, pos_offset);
 103         blobmsg_add_string_buffer(&status);
 104
 105         if (udh)
 106                 decode_udh(udh_start);
 107 }
 108
 109 static char *pdu_add_semioctet(char *str, char val)
 110 {
 111         *str = '0' + (val & 0xf);
 112         if (*str <= '9')
 113                 str++;
 114
 115         *str = '0' + ((val >> 4) & 0xf);
 116         if (*str <= '9')
 117                 str++;
 118
 119         return str;
 120 }
 121
 122 static void
 123 pdu_decode_address(char *str, unsigned char *data, int len)
 124 {
 125         unsigned char toa;
 126
 127         toa = *(data++);
 128         switch (toa & 0x70) {
 129         case 0x50:
 130                 pdu_decode_7bit_str(str, data, len, 0);
 131                 return;
 132         case 0x10:
 133                 *(str++) = '+';
 134                 /* fall through */
 135         default:
 136                 while (len--) {
 137                         str = pdu_add_semioctet(str, *data);
 138                         data++;
 139                 }
 140         }
 141
 142         *str = 0;
 143 }
 144
 145 static void wms_decode_address(char *str, char *name, unsigned char *data, int len)
 146 {
 147         str = blobmsg_alloc_string_buffer(&status, name, len * 2 + 2);
 148         pdu_decode_address(str, data, len);
 149         blobmsg_add_string_buffer(&status);
 150 }
 151
 152 static void cmd_wms_get_message_cb(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg)
 153 {
 154         struct qmi_wms_raw_read_response res;
 155         unsigned char *data, *end;
 156         char *str;
 157         int i, cur_len;
 158         bool sent;
 159         unsigned char first;
 160
 161         qmi_parse_wms_raw_read_response(msg, &res);
 162         data = (unsigned char *) res.data.raw_message_data.raw_data;
 163         end = data + res.data.raw_message_data.raw_data_n;
 164
 165         cur_len = *(data++);
 166         if (data + cur_len >= end)
 167                 return;
 168
 169         if (cur_len) {
 170                 wms_decode_address(str, "smsc", data, cur_len - 1);
 171                 data += cur_len;
 172         }
 173
 174         if (data + 3 >= end)
 175                 return;
 176
 177         first = *(data++);
 178         sent = (first & 0x3) == 1;
 179         if (sent)
 180                 data++;
 181
 182         cur_len = *(data++);
 183         if (data + cur_len >= end)
 184                 return;
 185
 186         if (cur_len) {
 187                 cur_len = (cur_len + 1) / 2;
 188                 wms_decode_address(str, sent ? "receiver" : "sender", data, cur_len);
 189                 data += cur_len + 1;
 190         }
 191
 192         if (data + 3 >= end)
 193                 return;
 194
 195         /* Protocol ID */
 196         if (*(data++) != 0)
 197                 return;
 198
 199         /* Data Encoding */
 200         if (*(data++) != 0)
 201                 return;
 202
 203         if (sent) {
 204                 /* Message validity */
 205                 data++;
 206         } else {
 207                 if (data + 6 >= end)
 208                         return;
 209
 210                 str = blobmsg_alloc_string_buffer(&status, "timestamp", 32);
 211
 212                 /* year */
 213                 *(str++) = '2';
 214                 *(str++) = '0';
 215                 str = pdu_add_semioctet(str, data[0]);
 216                 /* month */
 217                 *(str++) = '-';
 218                 str = pdu_add_semioctet(str, data[1]);
 219                 /* day */
 220                 *(str++) = '-';
 221                 str = pdu_add_semioctet(str, data[2]);
 222
 223                 /* hour */
 224                 *(str++) = ' ';
 225                 str = pdu_add_semioctet(str, data[3]);
 226                 /* minute */
 227                 *(str++) = ':';
 228                 str = pdu_add_semioctet(str, data[4]);
 229                 /* second */
 230                 *(str++) = ':';
 231                 str = pdu_add_semioctet(str, data[5]);
 232                 *str = 0;
 233
 234                 blobmsg_add_string_buffer(&status);
 235
 236                 data += 7;
 237         }
 238
 239         cur_len = *(data++);
 240         decode_7bit_field("text", data, end - data, !!(first & 0x40));
 241 }
 242
 243 static enum qmi_cmd_result
 244 cmd_wms_get_message_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
 245 {
 246         static struct qmi_wms_raw_read_request mreq = {
 247                 QMI_INIT_SEQUENCE(message_memory_storage_id,
 248                         .storage_type = QMI_WMS_STORAGE_TYPE_UIM,
 249                 ),
 250                 QMI_INIT(message_mode, QMI_WMS_MESSAGE_MODE_GSM_WCDMA),
 251         };
 252         char *err;
 253         int id;
 254
 255         id = strtoul(arg, &err, 10);
 256         if (err && *err) {
 257                 blobmsg_add_string(&status, "error", "Invalid message ID");
 258                 return QMI_CMD_EXIT;
 259         }
 260
 261         mreq.data.message_memory_storage_id.memory_index = id;
 262         qmi_set_wms_raw_read_request(msg, &mreq);
 263
 264         return QMI_CMD_REQUEST;
 265 }
 266
 267
 268 static void cmd_wms_get_raw_message_cb(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg)
 269 {
 270         struct qmi_wms_raw_read_response res;
 271         unsigned char *data;
 272         int i, len = 0;
 273         char *str;
 274
 275         qmi_parse_wms_raw_read_response(msg, &res);
 276         data = (unsigned char *) res.data.raw_message_data.raw_data;
 277         str = blobmsg_alloc_string_buffer(&status, "data", res.data.raw_message_data.raw_data_n * 3);
 278         for (i = 0; i < res.data.raw_message_data.raw_data_n; i++) {
 279                 str += sprintf(str, " %02x" + (i ? 0 : 1), data[i]);
 280         }
 281         blobmsg_add_string_buffer(&status);
 282 }
 283
 284 #define cmd_wms_get_raw_message_prepare cmd_wms_get_message_prepare