From 5738f83aeb59361a0a2eda2460113f6dc9194271 Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Wed, 12 Dec 2012 16:00:35 -0800 Subject: Snapshot cdeccf6fdd8c2d494ea2867cb37a025bf8879baf Change-Id: Ia2de32ccb97a9641462c72363b0a8c4288f4f36d --- stack/sdp/sdp_utils.c | 1040 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1040 insertions(+) create mode 100644 stack/sdp/sdp_utils.c (limited to 'stack/sdp/sdp_utils.c') diff --git a/stack/sdp/sdp_utils.c b/stack/sdp/sdp_utils.c new file mode 100644 index 0000000..cda0570 --- /dev/null +++ b/stack/sdp/sdp_utils.c @@ -0,0 +1,1040 @@ +/****************************************************************************** + * + * Copyright (C) 1999-2012 Broadcom Corporation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + ******************************************************************************/ + +/****************************************************************************** + * + * This file contains SDP utility functions + * + ******************************************************************************/ + +#include +#include +#include +#include + +#include "gki.h" +#include "bt_types.h" + +#include "l2cdefs.h" +#include "hcidefs.h" +#include "hcimsgs.h" + +#include "sdp_api.h" +#include "sdpint.h" + +#include "btu.h" + + +static const UINT8 sdp_base_uuid[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, + 0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB}; + +/******************************************************************************* +** +** Function sdpu_find_ccb_by_cid +** +** Description This function searches the CCB table for an entry with the +** passed CID. +** +** Returns the CCB address, or NULL if not found. +** +*******************************************************************************/ +tCONN_CB *sdpu_find_ccb_by_cid (UINT16 cid) +{ + UINT16 xx; + tCONN_CB *p_ccb; + + /* Look through each connection control block */ + for (xx = 0, p_ccb = sdp_cb.ccb; xx < SDP_MAX_CONNECTIONS; xx++, p_ccb++) + { + if ((p_ccb->con_state != SDP_STATE_IDLE) && (p_ccb->connection_id == cid)) + return (p_ccb); + } + + /* If here, not found */ + return (NULL); +} + + +/******************************************************************************* +** +** Function sdpu_find_ccb_by_db +** +** Description This function searches the CCB table for an entry with the +** passed discovery db. +** +** Returns the CCB address, or NULL if not found. +** +*******************************************************************************/ +tCONN_CB *sdpu_find_ccb_by_db (tSDP_DISCOVERY_DB *p_db) +{ +#if SDP_CLIENT_ENABLED == TRUE + UINT16 xx; + tCONN_CB *p_ccb; + + if (p_db) + { + /* Look through each connection control block */ + for (xx = 0, p_ccb = sdp_cb.ccb; xx < SDP_MAX_CONNECTIONS; xx++, p_ccb++) + { + if ((p_ccb->con_state != SDP_STATE_IDLE) && (p_ccb->p_db == p_db)) + return (p_ccb); + } + } +#endif + /* If here, not found */ + return (NULL); +} + + +/******************************************************************************* +** +** Function sdpu_allocate_ccb +** +** Description This function allocates a new CCB. +** +** Returns CCB address, or NULL if none available. +** +*******************************************************************************/ +tCONN_CB *sdpu_allocate_ccb (void) +{ + UINT16 xx; + tCONN_CB *p_ccb; + + /* Look through each connection control block for a free one */ + for (xx = 0, p_ccb = sdp_cb.ccb; xx < SDP_MAX_CONNECTIONS; xx++, p_ccb++) + { + if (p_ccb->con_state == SDP_STATE_IDLE) + { + memset (p_ccb, 0, sizeof (tCONN_CB)); + + p_ccb->timer_entry.param = (UINT32) p_ccb; + + return (p_ccb); + } + } + + /* If here, no free CCB found */ + return (NULL); +} + + +/******************************************************************************* +** +** Function sdpu_release_ccb +** +** Description This function releases a CCB. +** +** Returns void +** +*******************************************************************************/ +void sdpu_release_ccb (tCONN_CB *p_ccb) +{ + /* Ensure timer is stopped */ + btu_stop_timer (&p_ccb->timer_entry); + + /* Drop any response pointer we may be holding */ + p_ccb->con_state = SDP_STATE_IDLE; +#if SDP_CLIENT_ENABLED == TRUE + p_ccb->is_attr_search = FALSE; +#endif + + /* Free the response buffer */ + if (p_ccb->rsp_list) + { + SDP_TRACE_DEBUG0("releasing SDP rsp_list"); + + GKI_freebuf(p_ccb->rsp_list); + p_ccb->rsp_list = NULL; + } +} + + +/******************************************************************************* +** +** Function sdpu_build_attrib_seq +** +** Description This function builds an attribute sequence from the list of +** passed attributes. It is also passed the address of the output +** buffer. +** +** Returns Pointer to next byte in the output buffer. +** +*******************************************************************************/ +UINT8 *sdpu_build_attrib_seq (UINT8 *p_out, UINT16 *p_attr, UINT16 num_attrs) +{ + UINT16 xx; + + /* First thing is the data element header. See if the length fits 1 byte */ + /* If no attributes, assume a 4-byte wildcard */ + if (!p_attr) + xx = 5; + else + xx = num_attrs * 3; + + if (xx > 255) + { + UINT8_TO_BE_STREAM (p_out, (DATA_ELE_SEQ_DESC_TYPE << 3) | SIZE_IN_NEXT_WORD); + UINT16_TO_BE_STREAM (p_out, xx); + } + else + { + UINT8_TO_BE_STREAM (p_out, (DATA_ELE_SEQ_DESC_TYPE << 3) | SIZE_IN_NEXT_BYTE); + UINT8_TO_BE_STREAM (p_out, xx); + } + + /* If there are no attributes specified, assume caller wants wildcard */ + if (!p_attr) + { + UINT8_TO_BE_STREAM (p_out, (UINT_DESC_TYPE << 3) | SIZE_FOUR_BYTES); + UINT16_TO_BE_STREAM (p_out, 0); + UINT16_TO_BE_STREAM (p_out, 0xFFFF); + } + else + { + /* Loop through and put in all the attributes(s) */ + for (xx = 0; xx < num_attrs; xx++, p_attr++) + { + UINT8_TO_BE_STREAM (p_out, (UINT_DESC_TYPE << 3) | SIZE_TWO_BYTES); + UINT16_TO_BE_STREAM (p_out, *p_attr); + } + } + + return (p_out); +} + + +/******************************************************************************* +** +** Function sdpu_build_attrib_entry +** +** Description This function builds an attribute entry from the passed +** attribute record. It is also passed the address of the output +** buffer. +** +** Returns Pointer to next byte in the output buffer. +** +*******************************************************************************/ +UINT8 *sdpu_build_attrib_entry (UINT8 *p_out, tSDP_ATTRIBUTE *p_attr) +{ + /* First, store the attribute ID. Goes as a UINT */ + UINT8_TO_BE_STREAM (p_out, (UINT_DESC_TYPE << 3) | SIZE_TWO_BYTES); + UINT16_TO_BE_STREAM (p_out, p_attr->id); + + /* the attribute is in the db record. + * assuming the attribute len is less than SDP_MAX_ATTR_LEN */ + switch(p_attr->type) + { + case TEXT_STR_DESC_TYPE: /* 4 */ + case DATA_ELE_SEQ_DESC_TYPE:/* 6 */ + case DATA_ELE_ALT_DESC_TYPE:/* 7 */ + case URL_DESC_TYPE: /* 8 */ +#if (SDP_MAX_ATTR_LEN > 0xFFFF) + if(p_attr->len > 0xFFFF) + { + UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_IN_NEXT_LONG); + UINT32_TO_BE_STREAM (p_out, p_attr->len); + } + else + +#endif /* 0xFFFF - 0xFF */ +#if (SDP_MAX_ATTR_LEN > 0xFF) + if(p_attr->len > 0xFF) + { + UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_IN_NEXT_WORD); + UINT16_TO_BE_STREAM (p_out, p_attr->len); + } + else + +#endif /* 0xFF and less*/ + { + UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_IN_NEXT_BYTE); + UINT8_TO_BE_STREAM (p_out, p_attr->len); + } + + ARRAY_TO_BE_STREAM (p_out, p_attr->value_ptr, (int)p_attr->len); + + return (p_out); + } + + /* Now, store the attribute value */ + switch (p_attr->len) + { + case 1: + UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_ONE_BYTE); + break; + case 2: + UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_TWO_BYTES); + break; + case 4: + UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_FOUR_BYTES); + break; + case 8: + UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_EIGHT_BYTES); + break; + case 16: + UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_SIXTEEN_BYTES); + break; + default: + UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_IN_NEXT_BYTE); + UINT8_TO_BE_STREAM (p_out, p_attr->len); + break; + } + + ARRAY_TO_BE_STREAM (p_out, p_attr->value_ptr, (int)p_attr->len); + + return (p_out); +} + + +/******************************************************************************* +** +** Function sdpu_build_n_send_error +** +** Description This function builds and sends an error packet. +** +** Returns void +** +*******************************************************************************/ +void sdpu_build_n_send_error (tCONN_CB *p_ccb, UINT16 trans_num, UINT16 error_code, char *p_error_text) +{ + UINT8 *p_rsp, *p_rsp_start, *p_rsp_param_len; + UINT16 rsp_param_len; + BT_HDR *p_buf; + + + SDP_TRACE_WARNING2 ("SDP - sdpu_build_n_send_error code: 0x%x CID: 0x%x", + error_code, p_ccb->connection_id); + + /* Get a buffer to use to build and send the packet to L2CAP */ + if ((p_buf = (BT_HDR *)GKI_getpoolbuf (SDP_POOL_ID)) == NULL) + { + SDP_TRACE_ERROR0 ("SDP - no buf for err msg"); + return; + } + p_buf->offset = L2CAP_MIN_OFFSET; + p_rsp = p_rsp_start = (UINT8 *)(p_buf + 1) + L2CAP_MIN_OFFSET; + + UINT8_TO_BE_STREAM (p_rsp, SDP_PDU_ERROR_RESPONSE); + UINT16_TO_BE_STREAM (p_rsp, trans_num); + + /* Skip the parameter length, we need to add it at the end */ + p_rsp_param_len = p_rsp; + p_rsp += 2; + + UINT16_TO_BE_STREAM (p_rsp, error_code); + + /* Unplugfest example traces do not have any error text */ + if (p_error_text) + ARRAY_TO_BE_STREAM (p_rsp, p_error_text, (int) strlen (p_error_text)); + + /* Go back and put the parameter length into the buffer */ + rsp_param_len = p_rsp - p_rsp_param_len - 2; + UINT16_TO_BE_STREAM (p_rsp_param_len, rsp_param_len); + + /* Set the length of the SDP data in the buffer */ + p_buf->len = p_rsp - p_rsp_start; + + + /* Send the buffer through L2CAP */ + L2CA_DataWrite (p_ccb->connection_id, p_buf); +} + + + +/******************************************************************************* +** +** Function sdpu_extract_uid_seq +** +** Description This function extracts a UUID sequence from the passed input +** buffer, and puts it into the passed output list. +** +** Returns Pointer to next byte in the input buffer after the sequence. +** +*******************************************************************************/ +UINT8 *sdpu_extract_uid_seq (UINT8 *p, UINT16 param_len, tSDP_UUID_SEQ *p_seq) +{ + UINT8 *p_seq_end; + UINT8 descr, type, size; + UINT32 seq_len, uuid_len; + + /* Assume none found */ + p_seq->num_uids = 0; + + /* A UID sequence is composed of a bunch of UIDs. */ + + BE_STREAM_TO_UINT8 (descr, p); + type = descr >> 3; + size = descr & 7; + + if (type != DATA_ELE_SEQ_DESC_TYPE) + return (NULL); + + switch (size) + { + case SIZE_TWO_BYTES: + seq_len = 2; + break; + case SIZE_FOUR_BYTES: + seq_len = 4; + break; + case SIZE_SIXTEEN_BYTES: + seq_len = 16; + break; + case SIZE_IN_NEXT_BYTE: + BE_STREAM_TO_UINT8 (seq_len, p); + break; + case SIZE_IN_NEXT_WORD: + BE_STREAM_TO_UINT16 (seq_len, p); + break; + case SIZE_IN_NEXT_LONG: + BE_STREAM_TO_UINT32 (seq_len, p); + break; + default: + return (NULL); + } + + if (seq_len >= param_len) + return (NULL); + + p_seq_end = p + seq_len; + + /* Loop through, extracting the UIDs */ + for ( ; p < p_seq_end ; ) + { + BE_STREAM_TO_UINT8 (descr, p); + type = descr >> 3; + size = descr & 7; + + if (type != UUID_DESC_TYPE) + return (NULL); + + switch (size) + { + case SIZE_TWO_BYTES: + uuid_len = 2; + break; + case SIZE_FOUR_BYTES: + uuid_len = 4; + break; + case SIZE_SIXTEEN_BYTES: + uuid_len = 16; + break; + case SIZE_IN_NEXT_BYTE: + BE_STREAM_TO_UINT8 (uuid_len, p); + break; + case SIZE_IN_NEXT_WORD: + BE_STREAM_TO_UINT16 (uuid_len, p); + break; + case SIZE_IN_NEXT_LONG: + BE_STREAM_TO_UINT32 (uuid_len, p); + break; + default: + return (NULL); + } + + /* If UUID length is valid, copy it across */ + if ((uuid_len == 2) || (uuid_len == 4) || (uuid_len == 16)) + { + p_seq->uuid_entry[p_seq->num_uids].len = (UINT16) uuid_len; + BE_STREAM_TO_ARRAY (p, p_seq->uuid_entry[p_seq->num_uids].value, (int)uuid_len); + p_seq->num_uids++; + } + else + return (NULL); + + /* We can only do so many */ + if (p_seq->num_uids >= MAX_UUIDS_PER_SEQ) + return (NULL); + } + + if (p != p_seq_end) + return (NULL); + + return (p); +} + + + +/******************************************************************************* +** +** Function sdpu_extract_attr_seq +** +** Description This function extracts an attribute sequence from the passed +** input buffer, and puts it into the passed output list. +** +** Returns Pointer to next byte in the input buffer after the sequence. +** +*******************************************************************************/ +UINT8 *sdpu_extract_attr_seq (UINT8 *p, UINT16 param_len, tSDP_ATTR_SEQ *p_seq) +{ + UINT8 *p_end_list; + UINT8 descr, type, size; + UINT32 list_len, attr_len; + + /* Assume none found */ + p_seq->num_attr = 0; + + /* Get attribute sequence info */ + BE_STREAM_TO_UINT8 (descr, p); + type = descr >> 3; + size = descr & 7; + + if (type != DATA_ELE_SEQ_DESC_TYPE) + return (p); + + switch (size) + { + case SIZE_IN_NEXT_BYTE: + BE_STREAM_TO_UINT8 (list_len, p); + break; + + case SIZE_IN_NEXT_WORD: + BE_STREAM_TO_UINT16 (list_len, p); + break; + + case SIZE_IN_NEXT_LONG: + BE_STREAM_TO_UINT32 (list_len, p); + break; + + default: + return (p); + } + + if (list_len > param_len) + return (p); + + p_end_list = p + list_len; + + /* Loop through, extracting the attribute IDs */ + for ( ; p < p_end_list ; ) + { + BE_STREAM_TO_UINT8 (descr, p); + type = descr >> 3; + size = descr & 7; + + if (type != UINT_DESC_TYPE) + return (p); + + switch (size) + { + case SIZE_TWO_BYTES: + attr_len = 2; + break; + case SIZE_FOUR_BYTES: + attr_len = 4; + break; + case SIZE_IN_NEXT_BYTE: + BE_STREAM_TO_UINT8 (attr_len, p); + break; + case SIZE_IN_NEXT_WORD: + BE_STREAM_TO_UINT16 (attr_len, p); + break; + case SIZE_IN_NEXT_LONG: + BE_STREAM_TO_UINT32 (attr_len, p); + break; + default: + return (NULL); + break; + } + + /* Attribute length must be 2-bytes or 4-bytes for a paired entry. */ + if (attr_len == 2) + { + BE_STREAM_TO_UINT16 (p_seq->attr_entry[p_seq->num_attr].start, p); + p_seq->attr_entry[p_seq->num_attr].end = p_seq->attr_entry[p_seq->num_attr].start; + } + else if (attr_len == 4) + { + BE_STREAM_TO_UINT16 (p_seq->attr_entry[p_seq->num_attr].start, p); + BE_STREAM_TO_UINT16 (p_seq->attr_entry[p_seq->num_attr].end, p); + } + else + return (NULL); + + /* We can only do so many */ + if (++p_seq->num_attr >= MAX_ATTR_PER_SEQ) + return (NULL); + } + + return (p); +} + + +/******************************************************************************* +** +** Function sdpu_get_len_from_type +** +** Description This function gets the length +** +** Returns void +** +*******************************************************************************/ +UINT8 *sdpu_get_len_from_type (UINT8 *p, UINT8 type, UINT32 *p_len) +{ + UINT8 u8; + UINT16 u16; + UINT32 u32; + + switch (type & 7) + { + case SIZE_ONE_BYTE: + *p_len = 1; + break; + case SIZE_TWO_BYTES: + *p_len = 2; + break; + case SIZE_FOUR_BYTES: + *p_len = 4; + break; + case SIZE_EIGHT_BYTES: + *p_len = 8; + break; + case SIZE_SIXTEEN_BYTES: + *p_len = 16; + break; + case SIZE_IN_NEXT_BYTE: + BE_STREAM_TO_UINT8 (u8, p); + *p_len = u8; + break; + case SIZE_IN_NEXT_WORD: + BE_STREAM_TO_UINT16 (u16, p); + *p_len = u16; + break; + case SIZE_IN_NEXT_LONG: + BE_STREAM_TO_UINT32 (u32, p); + *p_len = (UINT16) u32; + break; + } + + return (p); +} + + +/******************************************************************************* +** +** Function sdpu_is_base_uuid +** +** Description This function checks a 128-bit UUID with the base to see if +** it matches. Only the last 12 bytes are compared. +** +** Returns TRUE if matched, else FALSE +** +*******************************************************************************/ +BOOLEAN sdpu_is_base_uuid (UINT8 *p_uuid) +{ + UINT16 xx; + + for (xx = 4; xx < MAX_UUID_SIZE; xx++) + if (p_uuid[xx] != sdp_base_uuid[xx]) + return (FALSE); + + /* If here, matched */ + return (TRUE); +} + + +/******************************************************************************* +** +** Function sdpu_compare_uuid_arrays +** +** Description This function compares 2 BE UUIDs. If needed, they are expanded +** to 128-bit UUIDs, then compared. +** +** NOTE it is assumed that the arrays are in Big Endian format +** +** Returns TRUE if matched, else FALSE +** +*******************************************************************************/ +BOOLEAN sdpu_compare_uuid_arrays (UINT8 *p_uuid1, UINT32 len1, UINT8 *p_uuid2, UINT16 len2) +{ + UINT8 nu1[MAX_UUID_SIZE]; + UINT8 nu2[MAX_UUID_SIZE]; + + /* If lengths match, do a straight compare */ + if (len1 == len2) + { + if (len1 == 2) + return ((p_uuid1[0] == p_uuid2[0]) && (p_uuid1[1] == p_uuid2[1])); + if (len1 == 4) + return ( (p_uuid1[0] == p_uuid2[0]) && (p_uuid1[1] == p_uuid2[1]) + && (p_uuid1[2] == p_uuid2[2]) && (p_uuid1[3] == p_uuid2[3]) ); + else + return (memcmp (p_uuid1, p_uuid2, (size_t)len1) == 0); + } + else if (len1 > len2) + { + /* If the len1 was 4-byte, (so len2 is 2-byte), compare on the fly */ + if (len1 == 4) + { + return ( (p_uuid1[0] == 0) && (p_uuid1[1] == 0) + && (p_uuid1[2] == p_uuid2[0]) && (p_uuid1[3] == p_uuid2[1]) ); + } + else + { + /* Normalize UUIDs to 16-byte form, then compare. Len1 must be 16 */ + memcpy (nu1, p_uuid1, MAX_UUID_SIZE); + memcpy (nu2, sdp_base_uuid, MAX_UUID_SIZE); + + if (len2 == 4) + memcpy (nu2, p_uuid2, len2); + else + memcpy (nu2 + 2, p_uuid2, len2); + + return (memcmp (nu1, nu2, MAX_UUID_SIZE) == 0); + } + } + else + { + /* len2 is greater than len1 */ + /* If the len2 was 4-byte, (so len1 is 2-byte), compare on the fly */ + if (len2 == 4) + { + return ( (p_uuid2[0] == 0) && (p_uuid2[1] == 0) + && (p_uuid2[2] == p_uuid1[0]) && (p_uuid2[3] == p_uuid1[1]) ); + } + else + { + /* Normalize UUIDs to 16-byte form, then compare. Len1 must be 16 */ + memcpy (nu2, p_uuid2, MAX_UUID_SIZE); + memcpy (nu1, sdp_base_uuid, MAX_UUID_SIZE); + + if (len1 == 4) + memcpy (nu1, p_uuid1, (size_t)len1); + else + memcpy (nu1 + 2, p_uuid1, (size_t)len1); + + return (memcmp (nu1, nu2, MAX_UUID_SIZE) == 0); + } + } +} + + +/******************************************************************************* +** +** Function sdpu_compare_bt_uuids +** +** Description This function compares 2 BT UUID structures. +** +** NOTE it is assumed that BT UUID structures are compressed to the +** smallest possible UUIDs (by removing the base SDP UUID) +** +** Returns TRUE if matched, else FALSE +** +*******************************************************************************/ +BOOLEAN sdpu_compare_bt_uuids (tBT_UUID *p_uuid1, tBT_UUID *p_uuid2) +{ + /* Lengths must match for BT UUIDs to match */ + if (p_uuid1->len == p_uuid2->len) + { + if (p_uuid1->len == 2) + return (p_uuid1->uu.uuid16 == p_uuid2->uu.uuid16); + else if (p_uuid1->len == 4) + return (p_uuid1->uu.uuid32 == p_uuid2->uu.uuid32); + else if (!memcmp (p_uuid1->uu.uuid128, p_uuid2->uu.uuid128, 16)) + return (TRUE); + } + + return (FALSE); +} + + +/******************************************************************************* +** +** Function sdpu_compare_uuid_with_attr +** +** Description This function compares a BT UUID structure with the UUID in an +** SDP attribute record. If needed, they are expanded to 128-bit +** UUIDs, then compared. +** +** NOTE - it is assumed that BT UUID structures are compressed to the +** smallest possible UUIDs (by removing the base SDP UUID). +** - it is also assumed that the discovery atribute is compressed +** to the smallest possible +** +** Returns TRUE if matched, else FALSE +** +*******************************************************************************/ +BOOLEAN sdpu_compare_uuid_with_attr (tBT_UUID *p_btuuid, tSDP_DISC_ATTR *p_attr) +{ + UINT16 attr_len = SDP_DISC_ATTR_LEN (p_attr->attr_len_type); + + /* Since both UUIDs are compressed, lengths must match */ + if (p_btuuid->len != attr_len) + return (FALSE); + + if (p_btuuid->len == 2) + return (BOOLEAN)(p_btuuid->uu.uuid16 == p_attr->attr_value.v.u16); + else if (p_btuuid->len == 4) + return (BOOLEAN)(p_btuuid->uu.uuid32 == p_attr->attr_value.v.u32); + /* coverity[overrun-buffer-arg] */ + /* + Event overrun-buffer-arg: Overrun of static array "&p_attr->attr_value.v.array" of size 4 bytes by passing it to a function which indexes it with argument "16U" at byte position 15 + FALSE-POSITIVE error from Coverity test tool. Please do NOT remove following comment. + False-positive: SDP uses scratch buffer to hold the attribute value. + The actual size of tSDP_DISC_ATVAL does not matter. + If the array size in tSDP_DISC_ATVAL is increase, we would increase the system RAM usage unnecessarily + */ + else if (!memcmp (p_btuuid->uu.uuid128, p_attr->attr_value.v.array, MAX_UUID_SIZE)) + return (TRUE); + + return (FALSE); +} + +/******************************************************************************* +** +** Function sdpu_sort_attr_list +** +** Description sorts a list of attributes in numeric order from lowest to +** highest to conform to SDP specification +** +** Returns void +** +*******************************************************************************/ +void sdpu_sort_attr_list( UINT16 num_attr, tSDP_DISCOVERY_DB *p_db ) +{ + UINT16 i; + UINT16 x; + + /* Done if no attributes to sort */ + if (num_attr <= 1) + { + return; + } + else if (num_attr > SDP_MAX_ATTR_FILTERS) + { + num_attr = SDP_MAX_ATTR_FILTERS; + } + + num_attr--; /* for the for-loop */ + for( i = 0; i < num_attr; ) + { + if( p_db->attr_filters[i] > p_db->attr_filters[i+1] ) + { + /* swap the attribute IDs and start from the beginning */ + x = p_db->attr_filters[i]; + p_db->attr_filters[i] = p_db->attr_filters[i+1]; + p_db->attr_filters[i+1] = x; + + i = 0; + } + else + i++; + } +} + + +/******************************************************************************* +** +** Function sdpu_get_list_len +** +** Description gets the total list length in the sdp database for a given +** uid sequence and attr sequence +** +** Returns void +** +*******************************************************************************/ +UINT16 sdpu_get_list_len(tSDP_UUID_SEQ *uid_seq, tSDP_ATTR_SEQ *attr_seq) +{ + tSDP_RECORD *p_rec; + UINT16 len = 0; + UINT16 len1; + + for (p_rec = sdp_db_service_search (NULL, uid_seq); p_rec; p_rec = sdp_db_service_search (p_rec, uid_seq)) + { + len += 3; + + len1 = sdpu_get_attrib_seq_len(p_rec, attr_seq ); + + if (len1 != 0) + len += len1; + else + len -= 3; + } + return len; +} + +/******************************************************************************* +** +** Function sdpu_get_attrib_seq_len +** +** Description gets the length of the specific attributes in a given +** sdp record +** +** Returns void +** +*******************************************************************************/ +UINT16 sdpu_get_attrib_seq_len(tSDP_RECORD *p_rec, tSDP_ATTR_SEQ *attr_seq) +{ + tSDP_ATTRIBUTE *p_attr; + UINT16 len1 = 0; + UINT16 xx; + BOOLEAN is_range = FALSE; + UINT16 start_id, end_id; + + for (xx = 0; xx < attr_seq->num_attr; xx++) + { + if (is_range == FALSE) + { + start_id = attr_seq->attr_entry[xx].start; + end_id = attr_seq->attr_entry[xx].end; + } + p_attr = sdp_db_find_attr_in_rec (p_rec, + start_id, + end_id); + if (p_attr) + { + len1 += sdpu_get_attrib_entry_len (p_attr); + + /* If doing a range, stick with this one till no more attributes found */ + if (start_id != end_id) + { + /* Update for next time through */ + start_id = p_attr->id + 1; + xx--; + is_range = TRUE; + } + else + is_range = FALSE; + } + else + is_range = FALSE; + } + return len1; +} + +/******************************************************************************* +** +** Function sdpu_get_attrib_entry_len +** +** Description gets the length of a specific attribute +** +** Returns void +** +*******************************************************************************/ +UINT16 sdpu_get_attrib_entry_len(tSDP_ATTRIBUTE *p_attr) +{ + UINT16 len = 3; + + /* the attribute is in the db record. + * assuming the attribute len is less than SDP_MAX_ATTR_LEN */ + switch(p_attr->type) + { + case TEXT_STR_DESC_TYPE: /* 4 */ + case DATA_ELE_SEQ_DESC_TYPE:/* 6 */ + case DATA_ELE_ALT_DESC_TYPE:/* 7 */ + case URL_DESC_TYPE: /* 8 */ +#if (SDP_MAX_ATTR_LEN > 0xFFFF) + if(p_attr->len > 0xFFFF) + { + len += 5; + } + else + +#endif/* 0xFFFF - 0xFF */ +#if (SDP_MAX_ATTR_LEN > 0xFF) + if(p_attr->len > 0xFF) + { + len += 3; + } + else + +#endif /* 0xFF and less*/ + { + len += 2; + } + len += p_attr->len; + return len; + } + + /* Now, the attribute value */ + switch (p_attr->len) + { + case 1: + case 2: + case 4: + case 8: + case 16: + len += 1; + break; + default: + len += 2; + break; + } + + len += p_attr->len; + return len; +} + + +/******************************************************************************* +** +** Function sdpu_build_partial_attrib_entry +** +** Description This function fills a buffer with partial attribute. It is +** assumed that the maximum size of any attribute is 256 bytes. +** +** p_out: output buffer +** p_attr: attribute to be copied partially into p_out +** rem_len: num bytes to copy into p_out +** offset: current start offset within the attr that needs to be copied +** +** Returns Pointer to next byte in the output buffer. +** offset is also updated +** +*******************************************************************************/ +UINT8 *sdpu_build_partial_attrib_entry (UINT8 *p_out, tSDP_ATTRIBUTE *p_attr, UINT16 len, UINT16 *offset) +{ + UINT8 tmp_attr[MAX_ATTR_LEN]; + UINT8 *p_tmp_attr = &tmp_attr[0]; + size_t len_to_copy; + UINT16 attr_len; + + sdpu_build_attrib_entry(p_tmp_attr, p_attr); + attr_len = sdpu_get_attrib_entry_len(p_attr); + + len_to_copy = ((attr_len - *offset) < len) ? (attr_len - *offset): len; + + memcpy(p_out, &tmp_attr[*offset], len_to_copy); + + p_out = &p_out[len_to_copy]; + *offset += len_to_copy; + + return p_out; +} + +/******************************************************************************* +** +** Function sdpu_uuid16_to_uuid128 +** +** Description This function converts UUID-16 to UUID-128 by including the base UUID +** +** uuid16: 2-byte UUID +** p_uuid128: Expanded 128-bit UUID +** +** Returns None +** +*******************************************************************************/ +void sdpu_uuid16_to_uuid128(UINT16 uuid16, UINT8* p_uuid128) +{ + UINT16 uuid16_bo; + memset(p_uuid128, 0, 16); + + memcpy(p_uuid128, sdp_base_uuid, MAX_UUID_SIZE); + uuid16_bo = ntohs(uuid16); + memcpy(p_uuid128+ 2, &uuid16_bo, sizeof(uint16_t)); +} -- cgit v1.1