1 /* 2 * 3 * BlueZ - Bluetooth protocol stack for Linux 4 * 5 * Copyright (C) 2001-2002 Wayne Lee <waynelee (at) qualcomm.com> 6 * Copyright (C) 2003-2007 Marcel Holtmann <marcel (at) holtmann.org> 7 * 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 22 * 23 */ 24 25 #ifdef HAVE_CONFIG_H 26 #include <config.h> 27 #endif 28 29 #include <stdio.h> 30 #include <errno.h> 31 #include <unistd.h> 32 #include <stdlib.h> 33 #include <string.h> 34 35 #include <sys/types.h> 36 #include <sys/socket.h> 37 #include <netinet/in.h> 38 39 #include <bluetooth/bluetooth.h> 40 41 #include "parser.h" 42 #include "rfcomm.h" 43 #include "sdp.h" 44 45 static char *cr_str[] = { 46 "RSP", 47 "CMD" 48 }; 49 50 #define CR_STR(mcc_head) cr_str[mcc_head->type.cr] 51 #define GET_DLCI(addr) ((addr.server_chn << 1) | (addr.d & 1)) 52 53 static void print_rfcomm_hdr(long_frame_head* head, uint8_t *ptr, int len) 54 { 55 address_field addr = head->addr; 56 uint8_t ctr = head->control; 57 uint16_t ilen = head->length.bits.len; 58 uint8_t ctr_type,pf,dlci,fcs; 59 60 dlci = GET_DLCI(addr); 61 pf = GET_PF(ctr); 62 ctr_type = CLR_PF(ctr); 63 fcs = *(ptr + len - 1); 64 65 printf("cr %d dlci %d pf %d ilen %d fcs 0x%x ", addr.cr, dlci, pf, ilen, fcs); 66 } 67 68 static void print_mcc(mcc_long_frame_head* mcc_head) 69 { 70 printf("mcc_len %d\n", mcc_head->length.bits.len); 71 } 72 73 static inline void mcc_test(int level, uint8_t *ptr, int len, 74 long_frame_head *head, mcc_long_frame_head *mcc_head) 75 { 76 printf("TEST %s: ", CR_STR(mcc_head)); 77 print_rfcomm_hdr(head, ptr, len); 78 print_mcc(mcc_head); 79 } 80 static inline void mcc_fcon(int level, uint8_t *ptr, int len, 81 long_frame_head *head, mcc_long_frame_head *mcc_head) 82 { 83 printf("FCON %s: ", CR_STR(mcc_head)); 84 print_rfcomm_hdr(head, ptr, len); 85 print_mcc(mcc_head); 86 } 87 88 static inline void mcc_fcoff(int level, uint8_t *ptr, int len, 89 long_frame_head *head, mcc_long_frame_head *mcc_head) 90 { 91 printf("FCOFF %s: ", CR_STR(mcc_head)); 92 print_rfcomm_hdr(head, ptr, len); 93 print_mcc(mcc_head); 94 } 95 96 static inline void mcc_msc(int level, uint8_t *ptr, int len, 97 long_frame_head *head, mcc_long_frame_head *mcc_head) 98 { 99 msc_msg *msc = (void*) (ptr - STRUCT_END(msc_msg, mcc_s_head)); 100 101 printf("MSC %s: ", CR_STR(mcc_head)); 102 print_rfcomm_hdr(head, ptr, len); 103 print_mcc(mcc_head); 104 p_indent(level, 0); 105 printf("dlci %d fc %d rtc %d rtr %d ic %d dv %d", 106 GET_DLCI(msc->dlci), msc->v24_sigs.fc, msc->v24_sigs.rtc, 107 msc->v24_sigs.rtr, msc->v24_sigs.ic, msc->v24_sigs.dv ); 108 109 /* Assuming that break_signals field is _not declared_ in struct msc_msg... */ 110 if (len > STRUCT_OFFSET(msc_msg, fcs) - STRUCT_END(msc_msg, v24_sigs)) { 111 break_signals *brk = (break_signals *) 112 (ptr + STRUCT_END(msc_msg, v24_sigs)); 113 printf(" b1 %d b2 %d b3 %d len %d\n", 114 brk->b1, brk->b2, brk->b3, brk->len); 115 } else 116 printf("\n"); 117 } 118 119 static inline void mcc_rpn(int level, uint8_t *ptr, int len, 120 long_frame_head *head, mcc_long_frame_head *mcc_head) 121 { 122 rpn_msg *rpn = (void *) (ptr - STRUCT_END(rpn_msg, mcc_s_head)); 123 124 printf("RPN %s: ", CR_STR(mcc_head)); 125 print_rfcomm_hdr(head, ptr, len); 126 print_mcc(mcc_head); 127 128 p_indent(level, 0); 129 printf("dlci %d ", GET_DLCI(rpn->dlci)); 130 131 /* Assuming that rpn_val is _declared_ as a member of rpn_msg... */ 132 if (len <= STRUCT_OFFSET(rpn_msg, rpn_val) - STRUCT_END(rpn_msg, mcc_s_head)) { 133 printf("\n"); 134 return; 135 } 136 137 printf("br %d db %d sb %d p %d pt %d xi %d xo %d\n", 138 rpn->rpn_val.bit_rate, rpn->rpn_val.data_bits, 139 rpn->rpn_val.stop_bit, rpn->rpn_val.parity, 140 rpn->rpn_val.parity_type, rpn->rpn_val.xon_input, 141 rpn->rpn_val.xon_output); 142 143 p_indent(level, 0); 144 printf("rtri %d rtro %d rtci %d rtco %d xon %d xoff %d pm 0x%04x\n", 145 rpn->rpn_val.rtr_input, rpn->rpn_val.rtr_output, 146 rpn->rpn_val.rtc_input, rpn->rpn_val.rtc_output, 147 rpn->rpn_val.xon, rpn->rpn_val.xoff, btohs(rpn->rpn_val.pm)); 148 } 149 150 static inline void mcc_rls(int level, uint8_t *ptr, int len, 151 long_frame_head *head, mcc_long_frame_head *mcc_head) 152 { 153 rls_msg* rls = (void*) (ptr - STRUCT_END(rls_msg, mcc_s_head)); 154 155 printf("RLS %s: ", CR_STR(mcc_head)); 156 print_rfcomm_hdr(head, ptr, len); 157 print_mcc(mcc_head); 158 printf("dlci %d error: %d", GET_DLCI(rls->dlci), rls->error); 159 } 160 161 static inline void mcc_pn(int level, uint8_t *ptr, int len, 162 long_frame_head *head, mcc_long_frame_head *mcc_head) 163 { 164 pn_msg *pn = (void*) (ptr - STRUCT_END(pn_msg, mcc_s_head)); 165 166 printf("PN %s: ", CR_STR(mcc_head)); 167 print_rfcomm_hdr(head, ptr, len); 168 print_mcc(mcc_head); 169 170 p_indent(level, 0); 171 printf("dlci %d frame_type %d credit_flow %d pri %d ack_timer %d\n", 172 pn->dlci, pn->frame_type, pn->credit_flow, pn->prior, pn->ack_timer); 173 p_indent(level, 0); 174 printf("frame_size %d max_retrans %d credits %d\n", 175 btohs(pn->frame_size), pn->max_nbrof_retrans, pn->credits); 176 } 177 178 static inline void mcc_nsc(int level, uint8_t *ptr, int len, 179 long_frame_head *head, mcc_long_frame_head *mcc_head) 180 { 181 182 nsc_msg *nsc = (void*) (ptr - STRUCT_END(nsc_msg, mcc_s_head)); 183 184 printf("NSC %s: ", CR_STR(mcc_head)); 185 print_rfcomm_hdr(head, ptr, len); 186 print_mcc(mcc_head); 187 188 p_indent(level, 0); 189 printf("cr %d, mcc_cmd_type %x\n", 190 nsc->command_type.cr, nsc->command_type.type ); 191 } 192 193 static inline void mcc_frame(int level, struct frame *frm, long_frame_head *head) 194 { 195 mcc_short_frame_head *mcc_short_head_p = frm->ptr; 196 mcc_long_frame_head mcc_head; 197 uint8_t hdr_size; 198 199 if ( mcc_short_head_p->length.ea == EA ) { 200 mcc_head.type = mcc_short_head_p->type; 201 mcc_head.length.bits.len = mcc_short_head_p->length.len; 202 hdr_size = sizeof(mcc_short_frame_head); 203 } else { 204 mcc_head = *(mcc_long_frame_head *)frm->ptr; 205 mcc_head.length.val = btohs(mcc_head.length.val); 206 hdr_size = sizeof(mcc_long_frame_head); 207 } 208 209 frm->ptr += hdr_size; 210 frm->len -= hdr_size; 211 212 p_indent(level, frm); 213 printf("RFCOMM(s): "); 214 215 switch (mcc_head.type.type) { 216 case TEST: 217 mcc_test(level, frm->ptr, frm->len, head, &mcc_head); 218 raw_dump(level, frm); 219 break; 220 case FCON: 221 mcc_fcon(level, frm->ptr, frm->len, head, &mcc_head); 222 break; 223 case FCOFF: 224 mcc_fcoff(level, frm->ptr, frm->len, head, &mcc_head); 225 break; 226 case MSC: 227 mcc_msc(level, frm->ptr, frm->len, head, &mcc_head); 228 break; 229 case RPN: 230 mcc_rpn(level, frm->ptr, frm->len, head, &mcc_head); 231 break; 232 case RLS: 233 mcc_rls(level, frm->ptr, frm->len, head, &mcc_head); 234 break; 235 case PN: 236 mcc_pn(level, frm->ptr, frm->len, head, &mcc_head); 237 break; 238 case NSC: 239 mcc_nsc(level, frm->ptr, frm->len, head, &mcc_head); 240 break; 241 default: 242 printf("MCC message type 0x%02x: ", mcc_head.type.type); 243 print_rfcomm_hdr(head, frm->ptr, frm->len); 244 printf("\n"); 245 246 frm->len--; 247 raw_dump(level, frm); 248 } 249 } 250 251 static inline void uih_frame(int level, struct frame *frm, long_frame_head *head) 252 { 253 uint32_t proto; 254 255 if (!head->addr.server_chn) { 256 mcc_frame(level, frm, head); 257 } else { 258 p_indent(level, frm); 259 printf("RFCOMM(d): UIH: "); 260 print_rfcomm_hdr(head, frm->ptr, frm->len); 261 if (GET_PF(head->control)) { 262 printf("credits %d\n", *(uint8_t *)(frm->ptr)); 263 frm->ptr++; 264 frm->len--; 265 } else 266 printf("\n"); 267 268 frm->len--; 269 frm->dlci = GET_DLCI(head->addr); 270 frm->channel = head->addr.server_chn; 271 272 proto = get_proto(frm->handle, RFCOMM_PSM, frm->channel); 273 274 if (frm->len > 0) { 275 switch (proto) { 276 case SDP_UUID_OBEX: 277 if (!p_filter(FILT_OBEX)) 278 obex_dump(level + 1, frm); 279 else 280 raw_dump(level, frm); 281 break; 282 283 case SDP_UUID_LAN_ACCESS_PPP: 284 case SDP_UUID_DIALUP_NETWORKING: 285 if (!p_filter(FILT_PPP)) 286 ppp_dump(level + 1, frm); 287 else 288 raw_dump(level, frm); 289 break; 290 291 default: 292 if (p_filter(FILT_RFCOMM)) 293 break; 294 295 raw_dump(level, frm); 296 break; 297 } 298 } 299 } 300 } 301 302 void rfcomm_dump(int level, struct frame *frm) 303 { 304 uint8_t hdr_size, ctr_type; 305 short_frame_head *short_head_p = (void *) frm->ptr; 306 long_frame_head head; 307 308 if (short_head_p->length.ea == EA) { 309 head.addr = short_head_p->addr; 310 head.control = short_head_p->control; 311 head.length.bits.len = short_head_p->length.len; 312 hdr_size = sizeof(short_frame_head); 313 } else { 314 head = *(long_frame_head *) frm->ptr; 315 head.length.val = btohs(head.length.val); 316 hdr_size = sizeof(long_frame_head); 317 } 318 319 frm->ptr += hdr_size; 320 frm->len -= hdr_size; 321 322 ctr_type = CLR_PF(head.control); 323 324 if (ctr_type == UIH) { 325 uih_frame(level, frm, &head); 326 } else { 327 p_indent(level, frm); 328 printf("RFCOMM(s): "); 329 330 switch (ctr_type) { 331 case SABM: 332 printf("SABM: "); 333 break; 334 case UA: 335 printf("UA: "); 336 break; 337 case DM: 338 printf("DM: "); 339 break; 340 case DISC: 341 printf("DISC: "); 342 del_frame(frm->handle, GET_DLCI(head.addr)); 343 break; 344 default: 345 printf("ERR: "); 346 } 347 print_rfcomm_hdr(&head, frm->ptr, frm->len); 348 printf("\n"); 349 } 350 } 351
