jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 1 | /* |
Harald Welte | 632e843 | 2017-09-05 18:12:14 +0200 | [diff] [blame] | 2 | * OsmoGGSN - Gateway GPRS Support Node |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 3 | * Copyright (C) 2002 Mondru AB. |
| 4 | * |
| 5 | * The contents of this file may be used under the terms of the GNU |
| 6 | * General Public License Version 2, provided that the above copyright |
| 7 | * notice and this permission notice is included in all copies or |
| 8 | * substantial portions of the software. |
| 9 | * |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 10 | */ |
| 11 | |
| 12 | /* |
| 13 | * gtpie.c: Contains functions to encapsulate and decapsulate GTP |
| 14 | * information elements |
| 15 | * |
| 16 | * |
| 17 | * Encapsulation |
| 18 | * - gtpie_tlv, gtpie_tv0, gtpie_tv1, gtpie_tv2 ... Adds information |
| 19 | * elements to a buffer. |
| 20 | * |
| 21 | * Decapsulation |
| 22 | * - gtpie_decaps: Returns array with pointers to information elements. |
| 23 | * - getie_getie: Returns the pointer of a particular element. |
| 24 | * - gtpie_gettlv: Copies tlv information element. Return 0 on success. |
| 25 | * - gtpie_gettv: Copies tv information element. Return 0 on success. |
| 26 | * |
| 27 | */ |
| 28 | |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 29 | #include <../config.h> |
| 30 | |
| 31 | #ifdef HAVE_STDINT_H |
| 32 | #include <stdint.h> |
| 33 | #endif |
| 34 | |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 35 | #include <stdio.h> |
| 36 | #include <sys/types.h> |
| 37 | #include <netinet/in.h> |
| 38 | #include <string.h> |
| 39 | |
| 40 | #include "gtpie.h" |
| 41 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 42 | int gtpie_tlv(void *p, unsigned int *length, unsigned int size, uint8_t t, |
| 43 | int l, void *v) |
| 44 | { |
| 45 | if ((*length + 3 + l) >= size) |
| 46 | return 1; |
| 47 | ((union gtpie_member *)(p + *length))->tlv.t = hton8(t); |
| 48 | ((union gtpie_member *)(p + *length))->tlv.l = hton16(l); |
| 49 | memcpy((void *)(p + *length + 3), v, l); |
| 50 | *length += 3 + l; |
| 51 | return 0; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 52 | } |
| 53 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 54 | int gtpie_tv0(void *p, unsigned int *length, unsigned int size, uint8_t t, |
| 55 | int l, uint8_t * v) |
| 56 | { |
| 57 | if ((*length + 1 + l) >= size) |
| 58 | return 1; |
| 59 | ((union gtpie_member *)(p + *length))->tv0.t = hton8(t); |
| 60 | memcpy((void *)(p + *length + 1), v, l); |
| 61 | *length += 1 + l; |
| 62 | return 0; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 63 | } |
| 64 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 65 | int gtpie_tv1(void *p, unsigned int *length, unsigned int size, uint8_t t, |
| 66 | uint8_t v) |
| 67 | { |
| 68 | if ((*length + 2) >= size) |
| 69 | return 1; |
| 70 | ((union gtpie_member *)(p + *length))->tv1.t = hton8(t); |
| 71 | ((union gtpie_member *)(p + *length))->tv1.v = hton8(v); |
| 72 | *length += 2; |
| 73 | return 0; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 74 | } |
| 75 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 76 | int gtpie_tv2(void *p, unsigned int *length, unsigned int size, uint8_t t, |
| 77 | uint16_t v) |
| 78 | { |
| 79 | if ((*length + 3) >= size) |
| 80 | return 1; |
| 81 | ((union gtpie_member *)(p + *length))->tv2.t = hton8(t); |
| 82 | ((union gtpie_member *)(p + *length))->tv2.v = hton16(v); |
| 83 | *length += 3; |
| 84 | return 0; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 85 | } |
| 86 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 87 | int gtpie_tv4(void *p, unsigned int *length, unsigned int size, uint8_t t, |
| 88 | uint32_t v) |
| 89 | { |
| 90 | if ((*length + 5) >= size) |
| 91 | return 1; |
| 92 | ((union gtpie_member *)(p + *length))->tv4.t = hton8(t); |
| 93 | ((union gtpie_member *)(p + *length))->tv4.v = hton32(v); |
| 94 | *length += 5; |
| 95 | return 0; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 96 | } |
| 97 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 98 | int gtpie_tv8(void *p, unsigned int *length, unsigned int size, uint8_t t, |
| 99 | uint64_t v) |
| 100 | { |
| 101 | if ((*length + 9) >= size) |
| 102 | return 1; |
| 103 | ((union gtpie_member *)(p + *length))->tv8.t = hton8(t); |
| 104 | ((union gtpie_member *)(p + *length))->tv8.v = hton64(v); |
| 105 | *length += 9; |
| 106 | return 0; |
jjako | 08d331d | 2003-10-13 20:33:30 +0000 | [diff] [blame] | 107 | } |
| 108 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 109 | int gtpie_getie(union gtpie_member *ie[], int type, int instance) |
| 110 | { |
| 111 | int j; |
| 112 | for (j = 0; j < GTPIE_SIZE; j++) { |
| 113 | if ((ie[j] != 0) && (ie[j]->t == type)) { |
| 114 | if (instance-- == 0) |
| 115 | return j; |
| 116 | } |
jjako | 08d331d | 2003-10-13 20:33:30 +0000 | [diff] [blame] | 117 | } |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 118 | return -1; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 119 | } |
| 120 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 121 | int gtpie_exist(union gtpie_member *ie[], int type, int instance) |
| 122 | { |
| 123 | int j; |
| 124 | for (j = 0; j < GTPIE_SIZE; j++) { |
| 125 | if ((ie[j] != 0) && (ie[j]->t == type)) { |
| 126 | if (instance-- == 0) |
| 127 | return 1; |
| 128 | } |
| 129 | } |
| 130 | return 0; |
| 131 | } |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 132 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 133 | int gtpie_gettlv(union gtpie_member *ie[], int type, int instance, |
| 134 | unsigned int *length, void *dst, unsigned int size) |
| 135 | { |
| 136 | int ien; |
| 137 | ien = gtpie_getie(ie, type, instance); |
| 138 | if (ien >= 0) { |
| 139 | *length = ntoh16(ie[ien]->tlv.l); |
| 140 | if (*length <= size) |
| 141 | memcpy(dst, ie[ien]->tlv.v, *length); |
| 142 | else |
| 143 | return EOF; |
| 144 | } |
| 145 | return 0; |
| 146 | } |
| 147 | |
| 148 | int gtpie_gettv0(union gtpie_member *ie[], int type, int instance, |
| 149 | void *dst, unsigned int size) |
| 150 | { |
| 151 | int ien; |
| 152 | ien = gtpie_getie(ie, type, instance); |
| 153 | if (ien >= 0) |
| 154 | memcpy(dst, ie[ien]->tv0.v, size); |
| 155 | else |
| 156 | return EOF; |
| 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | int gtpie_gettv1(union gtpie_member *ie[], int type, int instance, |
| 161 | uint8_t * dst) |
| 162 | { |
| 163 | int ien; |
| 164 | ien = gtpie_getie(ie, type, instance); |
| 165 | if (ien >= 0) |
| 166 | *dst = ntoh8(ie[ien]->tv1.v); |
| 167 | else |
| 168 | return EOF; |
| 169 | return 0; |
| 170 | } |
| 171 | |
| 172 | int gtpie_gettv2(union gtpie_member *ie[], int type, int instance, |
| 173 | uint16_t * dst) |
| 174 | { |
| 175 | int ien; |
| 176 | ien = gtpie_getie(ie, type, instance); |
| 177 | if (ien >= 0) |
| 178 | *dst = ntoh16(ie[ien]->tv2.v); |
| 179 | else |
| 180 | return EOF; |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | int gtpie_gettv4(union gtpie_member *ie[], int type, int instance, |
| 185 | uint32_t * dst) |
| 186 | { |
| 187 | int ien; |
| 188 | ien = gtpie_getie(ie, type, instance); |
| 189 | if (ien >= 0) |
| 190 | *dst = ntoh32(ie[ien]->tv4.v); |
| 191 | else |
| 192 | return EOF; |
| 193 | return 0; |
| 194 | } |
| 195 | |
| 196 | int gtpie_gettv8(union gtpie_member *ie[], int type, int instance, |
| 197 | uint64_t * dst) |
| 198 | { |
| 199 | int ien; |
| 200 | ien = gtpie_getie(ie, type, instance); |
| 201 | if (ien >= 0) |
| 202 | *dst = ntoh64(ie[ien]->tv8.v); |
| 203 | else |
| 204 | return EOF; |
| 205 | return 0; |
| 206 | } |
| 207 | |
| 208 | int gtpie_decaps(union gtpie_member *ie[], int version, void *pack, |
| 209 | unsigned len) |
| 210 | { |
| 211 | int i; |
| 212 | int j = 0; |
| 213 | unsigned char *p; |
| 214 | unsigned char *end; |
| 215 | |
| 216 | end = (unsigned char *)pack + len; |
| 217 | p = pack; |
| 218 | |
| 219 | memset(ie, 0, sizeof(union gtpie_member *) * GTPIE_SIZE); |
| 220 | |
| 221 | while ((p < end) && (j < GTPIE_SIZE)) { |
| 222 | if (GTPIE_DEBUG) { |
| 223 | printf("The packet looks like this:\n"); |
| 224 | for (i = 0; i < (end - p); i++) { |
| 225 | printf("%02x ", |
| 226 | (unsigned char)*(char *)(p + i)); |
| 227 | if (!((i + 1) % 16)) |
| 228 | printf("\n"); |
| 229 | }; |
| 230 | printf("\n"); |
| 231 | } |
| 232 | |
| 233 | switch (*p) { |
| 234 | case GTPIE_CAUSE: /* TV GTPIE types with value length 1 */ |
| 235 | case GTPIE_REORDER: |
| 236 | case GTPIE_MAP_CAUSE: |
| 237 | case GTPIE_MS_VALIDATED: |
| 238 | case GTPIE_RECOVERY: |
| 239 | case GTPIE_SELECTION_MODE: |
| 240 | case GTPIE_TEARDOWN: |
| 241 | case GTPIE_NSAPI: |
| 242 | case GTPIE_RANAP_CAUSE: |
| 243 | case GTPIE_RP_SMS: |
| 244 | case GTPIE_RP: |
| 245 | case GTPIE_MS_NOT_REACH: |
BJovke | 03dbafb | 2016-09-15 13:41:41 +0200 | [diff] [blame] | 246 | case GTPIE_BCM: |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 247 | if (j < GTPIE_SIZE) { |
| 248 | ie[j] = (union gtpie_member *)p; |
| 249 | if (GTPIE_DEBUG) |
| 250 | printf |
| 251 | ("GTPIE TV1 found. Type %d, value %d\n", |
| 252 | ie[j]->tv1.t, ie[j]->tv1.v); |
| 253 | p += 1 + 1; |
| 254 | j++; |
| 255 | } |
| 256 | break; |
| 257 | case GTPIE_FL_DI: /* TV GTPIE types with value length 2 or 4 */ |
| 258 | case GTPIE_FL_C: |
| 259 | if (version != 0) { |
| 260 | if (j < GTPIE_SIZE) { /* GTPIE_TEI_DI & GTPIE_TEI_C with length 4 */ |
| 261 | /* case GTPIE_TEI_DI: gtp1 */ |
| 262 | /* case GTPIE_TEI_C: gtp1 */ |
| 263 | ie[j] = (union gtpie_member *)p; |
| 264 | if (GTPIE_DEBUG) |
| 265 | printf |
| 266 | ("GTPIE TV 4 found. Type %d, value %d\n", |
| 267 | ie[j]->tv4.t, |
| 268 | ie[j]->tv4.v); |
| 269 | p += 1 + 4; |
| 270 | j++; |
| 271 | } |
| 272 | break; |
| 273 | } |
| 274 | case GTPIE_PFI: /* TV GTPIE types with value length 2 */ |
| 275 | case GTPIE_CHARGING_C: |
| 276 | case GTPIE_TRACE_REF: |
| 277 | case GTPIE_TRACE_TYPE: |
| 278 | if (j < GTPIE_SIZE) { |
| 279 | ie[j] = (union gtpie_member *)p; |
| 280 | if (GTPIE_DEBUG) |
| 281 | printf |
| 282 | ("GTPIE TV2 found. Type %d, value %d\n", |
| 283 | ie[j]->tv2.t, ie[j]->tv2.v); |
| 284 | p += 1 + 2; |
| 285 | j++; |
| 286 | } |
| 287 | break; |
| 288 | case GTPIE_QOS_PROFILE0: /* TV GTPIE types with value length 3 */ |
| 289 | case GTPIE_P_TMSI_S: |
| 290 | if (j < GTPIE_SIZE) { |
| 291 | ie[j] = (union gtpie_member *)p; |
| 292 | if (GTPIE_DEBUG) |
| 293 | printf |
| 294 | ("GTPIE TV 3 found. Type %d, value %d, %d, %d\n", |
| 295 | ie[j]->tv0.t, ie[j]->tv0.v[0], |
| 296 | ie[j]->tv0.v[1], ie[j]->tv0.v[2]); |
| 297 | p += 1 + 3; |
| 298 | j++; |
| 299 | } |
| 300 | break; |
| 301 | case GTPIE_TLLI: /* TV GTPIE types with value length 4 */ |
| 302 | case GTPIE_P_TMSI: |
| 303 | case GTPIE_CHARGING_ID: |
| 304 | /* case GTPIE_TEI_DI: Handled by GTPIE_FL_DI */ |
| 305 | /* case GTPIE_TEI_C: Handled by GTPIE_FL_DI */ |
| 306 | if (j < GTPIE_SIZE) { |
| 307 | ie[j] = (union gtpie_member *)p; |
| 308 | if (GTPIE_DEBUG) |
| 309 | printf |
| 310 | ("GTPIE TV 4 found. Type %d, value %d\n", |
| 311 | ie[j]->tv4.t, ie[j]->tv4.v); |
| 312 | p += 1 + 4; |
| 313 | j++; |
| 314 | } |
| 315 | break; |
| 316 | case GTPIE_TEI_DII: /* TV GTPIE types with value length 5 */ |
| 317 | if (j < GTPIE_SIZE) { |
| 318 | ie[j] = (union gtpie_member *)p; |
| 319 | if (GTPIE_DEBUG) |
| 320 | printf("GTPIE TV 5 found. Type %d\n", |
| 321 | ie[j]->tv0.t); |
| 322 | p += 1 + 5; |
| 323 | j++; |
| 324 | } |
| 325 | break; |
| 326 | case GTPIE_RAB_CONTEXT: /* TV GTPIE types with value length 7 */ |
| 327 | if (j < GTPIE_SIZE) { |
| 328 | ie[j] = (union gtpie_member *)p; |
| 329 | if (GTPIE_DEBUG) |
| 330 | printf("GTPIE TV 7 found. Type %d\n", |
| 331 | ie[j]->tv0.t); |
| 332 | p += 1 + 7; |
| 333 | j++; |
| 334 | } |
| 335 | break; |
| 336 | case GTPIE_IMSI: /* TV GTPIE types with value length 8 */ |
| 337 | if (j < GTPIE_SIZE) { |
| 338 | ie[j] = (union gtpie_member *)p; |
| 339 | if (GTPIE_DEBUG) |
| 340 | printf |
| 341 | ("GTPIE_IMSI - GTPIE TV 8 found. Type %d, value 0x%llx\n", |
| 342 | ie[j]->tv0.t, ie[j]->tv8.v); |
| 343 | p += 1 + 8; |
| 344 | j++; |
| 345 | } |
| 346 | break; |
| 347 | case GTPIE_RAI: /* TV GTPIE types with value length 6 */ |
| 348 | if (j < GTPIE_SIZE) { |
| 349 | ie[j] = (union gtpie_member *)p; |
| 350 | if (GTPIE_DEBUG) |
| 351 | printf |
| 352 | ("GTPIE_RAI - GTPIE TV 6 found. Type %d, value 0x%llx\n", |
| 353 | ie[j]->tv0.t, ie[j]->tv8.v); |
| 354 | p += 1 + 6; |
| 355 | j++; |
| 356 | } |
| 357 | break; |
| 358 | case GTPIE_AUTH_TRIPLET: /* TV GTPIE types with value length 28 */ |
| 359 | if (j < GTPIE_SIZE) { |
| 360 | ie[j] = (union gtpie_member *)p; |
| 361 | if (GTPIE_DEBUG) |
| 362 | printf("GTPIE TV 28 found. Type %d\n", |
| 363 | ie[j]->tv0.t); |
| 364 | p += 1 + 28; |
| 365 | j++; |
| 366 | } |
| 367 | break; |
| 368 | case GTPIE_EXT_HEADER_T: /* GTP extension header */ |
| 369 | if (j < GTPIE_SIZE) { |
| 370 | ie[j] = (union gtpie_member *)p; |
| 371 | if (GTPIE_DEBUG) |
| 372 | printf |
| 373 | ("GTPIE GTP extension header found. Type %d\n", |
| 374 | ie[j]->ext.t); |
| 375 | p += 2 + ntoh8(ie[j]->ext.l); |
| 376 | j++; |
| 377 | } |
| 378 | break; |
| 379 | case GTPIE_EUA: /* TLV GTPIE types with variable length */ |
| 380 | case GTPIE_MM_CONTEXT: |
| 381 | case GTPIE_PDP_CONTEXT: |
| 382 | case GTPIE_APN: |
| 383 | case GTPIE_PCO: |
| 384 | case GTPIE_GSN_ADDR: |
| 385 | case GTPIE_MSISDN: |
| 386 | case GTPIE_QOS_PROFILE: |
| 387 | case GTPIE_AUTH_QUINTUP: |
| 388 | case GTPIE_TFT: |
| 389 | case GTPIE_TARGET_INF: |
| 390 | case GTPIE_UTRAN_TRANS: |
| 391 | case GTPIE_RAB_SETUP: |
| 392 | case GTPIE_TRIGGER_ID: |
| 393 | case GTPIE_OMC_ID: |
| 394 | case GTPIE_CHARGING_ADDR: |
| 395 | case GTPIE_RAT_TYPE: |
| 396 | case GTPIE_USER_LOC: |
| 397 | case GTPIE_MS_TZ: |
| 398 | case GTPIE_IMEI_SV: |
| 399 | case GTPIE_PRIVATE: |
| 400 | if (j < GTPIE_SIZE) { |
| 401 | ie[j] = (union gtpie_member *)p; |
| 402 | if (GTPIE_DEBUG) |
| 403 | printf("GTPIE TLV found. Type %d\n", |
| 404 | ie[j]->tlv.t); |
| 405 | p += 3 + ntoh16(ie[j]->tlv.l); |
| 406 | j++; |
| 407 | } |
| 408 | break; |
| 409 | default: |
| 410 | if (GTPIE_DEBUG) |
| 411 | printf("GTPIE something unknown. Type %d\n", |
| 412 | *p); |
| 413 | return EOF; /* We received something unknown */ |
| 414 | } |
| 415 | } |
| 416 | if (p == end) { |
| 417 | if (GTPIE_DEBUG) |
| 418 | printf("GTPIE normal return. %lx %lx\n", |
| 419 | (unsigned long)p, (unsigned long)end); |
| 420 | return 0; /* We landed at the end of the packet: OK */ |
| 421 | } else if (!(j < GTPIE_SIZE)) { |
| 422 | if (GTPIE_DEBUG) |
| 423 | printf("GTPIE too many elements.\n"); |
| 424 | return EOF; /* We received too many information elements */ |
| 425 | } else { |
| 426 | if (GTPIE_DEBUG) |
| 427 | printf("GTPIE exceeded end of packet. %lx %lx\n", |
| 428 | (unsigned long)p, (unsigned long)end); |
| 429 | return EOF; /* We exceeded the end of the packet: Error */ |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | int gtpie_encaps(union gtpie_member *ie[], void *pack, unsigned *len) |
| 434 | { |
| 435 | int i; |
| 436 | unsigned char *p; |
| 437 | unsigned char *end; |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 438 | int iesize; |
| 439 | |
| 440 | p = pack; |
| 441 | |
| 442 | memset(pack, 0, GTPIE_MAX); |
| 443 | end = p + GTPIE_MAX; |
| 444 | for (i = 1; i < GTPIE_SIZE; i++) |
| 445 | if (ie[i] != 0) { |
| 446 | if (GTPIE_DEBUG) |
| 447 | printf("gtpie_encaps. Type %d\n", i); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 448 | switch (i) { |
| 449 | case GTPIE_CAUSE: /* TV GTPIE types with value length 1 */ |
| 450 | case GTPIE_REORDER: |
| 451 | case GTPIE_MAP_CAUSE: |
| 452 | case GTPIE_MS_VALIDATED: |
| 453 | case GTPIE_RECOVERY: |
| 454 | case GTPIE_SELECTION_MODE: |
| 455 | case GTPIE_TEARDOWN: |
| 456 | case GTPIE_NSAPI: |
| 457 | case GTPIE_RANAP_CAUSE: |
| 458 | case GTPIE_RP_SMS: |
| 459 | case GTPIE_RP: |
| 460 | case GTPIE_MS_NOT_REACH: |
BJovke | 03dbafb | 2016-09-15 13:41:41 +0200 | [diff] [blame] | 461 | case GTPIE_BCM: |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 462 | iesize = 2; |
| 463 | break; |
| 464 | case GTPIE_FL_DI: /* TV GTPIE types with value length 2 */ |
| 465 | case GTPIE_FL_C: |
| 466 | case GTPIE_PFI: |
| 467 | case GTPIE_CHARGING_C: |
| 468 | case GTPIE_TRACE_REF: |
| 469 | case GTPIE_TRACE_TYPE: |
| 470 | iesize = 3; |
| 471 | break; |
| 472 | case GTPIE_QOS_PROFILE0: /* TV GTPIE types with value length 3 */ |
| 473 | case GTPIE_P_TMSI_S: |
| 474 | iesize = 4; |
| 475 | break; |
| 476 | case GTPIE_TLLI: /* TV GTPIE types with value length 4 */ |
| 477 | case GTPIE_P_TMSI: |
| 478 | /* case GTPIE_TEI_DI: only in gtp1 */ |
| 479 | /* case GTPIE_TEI_C: only in gtp1 */ |
| 480 | case GTPIE_CHARGING_ID: |
| 481 | iesize = 5; |
| 482 | break; |
| 483 | case GTPIE_TEI_DII: /* TV GTPIE types with value length 5 */ |
| 484 | iesize = 6; |
| 485 | break; |
| 486 | case GTPIE_RAB_CONTEXT: /* TV GTPIE types with value length 7 */ |
| 487 | iesize = 8; |
| 488 | break; |
| 489 | case GTPIE_IMSI: /* TV GTPIE types with value length 8 */ |
| 490 | case GTPIE_RAI: |
| 491 | iesize = 9; |
| 492 | break; |
| 493 | case GTPIE_AUTH_TRIPLET: /* TV GTPIE types with value length 28 */ |
| 494 | iesize = 29; |
| 495 | break; |
| 496 | case GTPIE_EXT_HEADER_T: /* GTP extension header */ |
| 497 | iesize = 2 + hton8(ie[i]->ext.l); |
| 498 | break; |
| 499 | case GTPIE_EUA: /* TLV GTPIE types with length length 2 */ |
| 500 | case GTPIE_MM_CONTEXT: |
| 501 | case GTPIE_PDP_CONTEXT: |
| 502 | case GTPIE_APN: |
| 503 | case GTPIE_PCO: |
| 504 | case GTPIE_GSN_ADDR: |
| 505 | case GTPIE_MSISDN: |
| 506 | case GTPIE_QOS_PROFILE: |
| 507 | case GTPIE_AUTH_QUINTUP: |
| 508 | case GTPIE_TFT: |
| 509 | case GTPIE_TARGET_INF: |
| 510 | case GTPIE_UTRAN_TRANS: |
| 511 | case GTPIE_RAB_SETUP: |
| 512 | case GTPIE_TRIGGER_ID: |
| 513 | case GTPIE_OMC_ID: |
| 514 | case GTPIE_CHARGING_ADDR: |
| 515 | case GTPIE_PRIVATE: |
| 516 | iesize = 3 + hton16(ie[i]->tlv.l); |
| 517 | break; |
| 518 | default: |
| 519 | return 2; /* We received something unknown */ |
| 520 | } |
| 521 | if (p + iesize < end) { |
| 522 | memcpy(p, ie[i], iesize); |
| 523 | p += iesize; |
| 524 | *len += iesize; |
| 525 | } else |
| 526 | return 2; /* Out of space */ |
| 527 | } |
| 528 | return 0; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 529 | } |
| 530 | |
Harald Welte | f54a1f4 | 2010-05-04 11:08:38 +0200 | [diff] [blame] | 531 | int gtpie_encaps2(union gtpie_member ie[], unsigned int size, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 532 | void *pack, unsigned *len) |
| 533 | { |
| 534 | unsigned int i, j; |
| 535 | unsigned char *p; |
| 536 | unsigned char *end; |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 537 | int iesize; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 538 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 539 | p = pack; |
| 540 | |
| 541 | memset(pack, 0, GTPIE_MAX); |
| 542 | end = p + GTPIE_MAX; |
| 543 | for (j = 0; j < GTPIE_SIZE; j++) |
| 544 | for (i = 0; i < size; i++) |
| 545 | if (ie[i].t == j) { |
| 546 | if (GTPIE_DEBUG) |
| 547 | printf |
| 548 | ("gtpie_encaps. Number %d, Type %d\n", |
| 549 | i, ie[i].t); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 550 | switch (ie[i].t) { |
| 551 | case GTPIE_CAUSE: /* TV GTPIE types with value length 1 */ |
| 552 | case GTPIE_REORDER: |
| 553 | case GTPIE_MAP_CAUSE: |
| 554 | case GTPIE_MS_VALIDATED: |
| 555 | case GTPIE_RECOVERY: |
| 556 | case GTPIE_SELECTION_MODE: |
| 557 | case GTPIE_TEARDOWN: |
| 558 | case GTPIE_NSAPI: |
| 559 | case GTPIE_RANAP_CAUSE: |
| 560 | case GTPIE_RP_SMS: |
| 561 | case GTPIE_RP: |
| 562 | case GTPIE_MS_NOT_REACH: |
BJovke | 03dbafb | 2016-09-15 13:41:41 +0200 | [diff] [blame] | 563 | case GTPIE_BCM: |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 564 | iesize = 2; |
| 565 | break; |
| 566 | case GTPIE_PFI: /* TV GTPIE types with value length 2 */ |
| 567 | case GTPIE_CHARGING_C: |
| 568 | case GTPIE_TRACE_REF: |
| 569 | case GTPIE_TRACE_TYPE: |
| 570 | iesize = 3; |
| 571 | break; |
| 572 | case GTPIE_QOS_PROFILE0: /* TV GTPIE types with value length 3 */ |
| 573 | case GTPIE_P_TMSI_S: |
| 574 | iesize = 4; |
| 575 | break; |
| 576 | case GTPIE_TLLI: /* TV GTPIE types with value length 4 */ |
| 577 | case GTPIE_P_TMSI: |
| 578 | case GTPIE_TEI_DI: |
| 579 | case GTPIE_TEI_C: |
| 580 | iesize = 5; |
| 581 | break; |
| 582 | case GTPIE_TEI_DII: /* TV GTPIE types with value length 5 */ |
| 583 | iesize = 6; |
| 584 | break; |
| 585 | case GTPIE_RAB_CONTEXT: /* TV GTPIE types with value length 7 */ |
| 586 | iesize = 8; |
| 587 | break; |
| 588 | case GTPIE_IMSI: /* TV GTPIE types with value length 8 */ |
| 589 | case GTPIE_RAI: |
| 590 | iesize = 9; |
| 591 | break; |
| 592 | case GTPIE_AUTH_TRIPLET: /* TV GTPIE types with value length 28 */ |
| 593 | iesize = 29; |
| 594 | break; |
| 595 | case GTPIE_EXT_HEADER_T: /* GTP extension header */ |
| 596 | iesize = 2 + hton8(ie[i].ext.l); |
| 597 | break; |
| 598 | case GTPIE_CHARGING_ID: /* TLV GTPIE types with length length 2 */ |
| 599 | case GTPIE_EUA: |
| 600 | case GTPIE_MM_CONTEXT: |
| 601 | case GTPIE_PDP_CONTEXT: |
| 602 | case GTPIE_APN: |
| 603 | case GTPIE_PCO: |
| 604 | case GTPIE_GSN_ADDR: |
| 605 | case GTPIE_MSISDN: |
| 606 | case GTPIE_QOS_PROFILE: |
| 607 | case GTPIE_AUTH_QUINTUP: |
| 608 | case GTPIE_TFT: |
| 609 | case GTPIE_TARGET_INF: |
| 610 | case GTPIE_UTRAN_TRANS: |
| 611 | case GTPIE_RAB_SETUP: |
| 612 | case GTPIE_TRIGGER_ID: |
| 613 | case GTPIE_OMC_ID: |
| 614 | case GTPIE_CHARGING_ADDR: |
| 615 | case GTPIE_PRIVATE: |
| 616 | iesize = 3 + hton16(ie[i].tlv.l); |
| 617 | break; |
| 618 | default: |
| 619 | return 2; /* We received something unknown */ |
| 620 | } |
| 621 | if (p + iesize < end) { |
| 622 | memcpy(p, &ie[i], iesize); |
| 623 | p += iesize; |
| 624 | *len += iesize; |
| 625 | } else |
| 626 | return 2; /* Out of space */ |
| 627 | } |
| 628 | return 0; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 629 | } |