1 /****************************************************************************** 2 * 3 * Copyright 2003-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 /****************************************************************************** 20 * 21 * This file contains utility functions. 22 * 23 ******************************************************************************/ 24 #include <stddef.h> 25 26 #include "bt_common.h" 27 #include "btm_api.h" 28 #include "utl.h" 29 30 /******************************************************************************* 31 * 32 * Function utl_str2int 33 * 34 * Description This utility function converts a character string to an 35 * integer. Acceptable values in string are 0-9. If invalid 36 * string or string value too large, -1 is returned. Leading 37 * spaces are skipped. 38 * 39 * 40 * Returns Integer value or -1 on error. 41 * 42 ******************************************************************************/ 43 int16_t utl_str2int(const char* p_s) { 44 int32_t val = 0; 45 46 for (; *p_s == ' ' && *p_s != 0; p_s++) 47 ; 48 49 if (*p_s == 0) return -1; 50 51 for (;;) { 52 if ((*p_s < '0') || (*p_s > '9')) return -1; 53 54 val += (int32_t)(*p_s++ - '0'); 55 56 if (val > 32767) return -1; 57 58 if (*p_s == 0) { 59 return (int16_t)val; 60 } else { 61 val *= 10; 62 } 63 } 64 } 65 66 /******************************************************************************* 67 * 68 * Function utl_strucmp 69 * 70 * Description This utility function compares two strings in uppercase. 71 * String p_s must be uppercase. String p_t is converted to 72 * uppercase if lowercase. If p_s ends first, the substring 73 * match is counted as a match. 74 * 75 * 76 * Returns 0 if strings match, nonzero otherwise. 77 * 78 ******************************************************************************/ 79 int utl_strucmp(const char* p_s, const char* p_t) { 80 char c; 81 82 while (*p_s && *p_t) { 83 c = *p_t++; 84 if (c >= 'a' && c <= 'z') { 85 c -= 0x20; 86 } 87 if (*p_s++ != c) { 88 return -1; 89 } 90 } 91 /* if p_t hit null first, no match */ 92 if (*p_t == 0 && *p_s != 0) { 93 return 1; 94 } 95 /* else p_s hit null first, count as match */ 96 else { 97 return 0; 98 } 99 } 100 101 /******************************************************************************* 102 * 103 * Function utl_itoa 104 * 105 * Description This utility function converts a uint16_t to a string. The 106 * string is NULL-terminated. The length of the string is 107 * returned; 108 * 109 * 110 * Returns Length of string. 111 * 112 ******************************************************************************/ 113 uint8_t utl_itoa(uint16_t i, char* p_s) { 114 uint16_t j, k; 115 char* p = p_s; 116 bool fill = false; 117 118 if (i == 0) { 119 /* take care of zero case */ 120 *p++ = '0'; 121 } else { 122 for (j = 10000; j > 0; j /= 10) { 123 k = i / j; 124 i %= j; 125 if (k > 0 || fill) { 126 *p++ = k + '0'; 127 fill = true; 128 } 129 } 130 } 131 *p = 0; 132 return (uint8_t)(p - p_s); 133 } 134 135 /******************************************************************************* 136 * 137 * Function utl_set_device_class 138 * 139 * Description This function updates the local Device Class. 140 * 141 * Parameters: 142 * p_cod - Pointer to the device class to set to 143 * 144 * cmd - the fields of the device class to update. 145 * BTA_UTL_SET_COD_MAJOR_MINOR, - overwrite major, 146 * minor class 147 * BTA_UTL_SET_COD_SERVICE_CLASS - set the bits in 148 * the input 149 * BTA_UTL_CLR_COD_SERVICE_CLASS - clear the bits in 150 * the input 151 * BTA_UTL_SET_COD_ALL - overwrite major, minor, set 152 * the bits in service class 153 * BTA_UTL_INIT_COD - overwrite major, minor, and 154 * service class 155 * 156 * Returns true if successful, Otherwise false 157 * 158 ******************************************************************************/ 159 bool utl_set_device_class(tBTA_UTL_COD* p_cod, uint8_t cmd) { 160 uint8_t* dev; 161 uint16_t service; 162 uint8_t minor, major; 163 DEV_CLASS dev_class; 164 165 dev = BTM_ReadDeviceClass(); 166 BTM_COD_SERVICE_CLASS(service, dev); 167 BTM_COD_MINOR_CLASS(minor, dev); 168 BTM_COD_MAJOR_CLASS(major, dev); 169 170 switch (cmd) { 171 case BTA_UTL_SET_COD_MAJOR_MINOR: 172 minor = p_cod->minor & BTM_COD_MINOR_CLASS_MASK; 173 major = p_cod->major & BTM_COD_MAJOR_CLASS_MASK; 174 break; 175 176 case BTA_UTL_SET_COD_SERVICE_CLASS: 177 /* clear out the bits that is not SERVICE_CLASS bits */ 178 p_cod->service &= BTM_COD_SERVICE_CLASS_MASK; 179 service = service | p_cod->service; 180 break; 181 182 case BTA_UTL_CLR_COD_SERVICE_CLASS: 183 p_cod->service &= BTM_COD_SERVICE_CLASS_MASK; 184 service = service & (~p_cod->service); 185 break; 186 187 case BTA_UTL_SET_COD_ALL: 188 minor = p_cod->minor & BTM_COD_MINOR_CLASS_MASK; 189 major = p_cod->major & BTM_COD_MAJOR_CLASS_MASK; 190 p_cod->service &= BTM_COD_SERVICE_CLASS_MASK; 191 service = service | p_cod->service; 192 break; 193 194 case BTA_UTL_INIT_COD: 195 minor = p_cod->minor & BTM_COD_MINOR_CLASS_MASK; 196 major = p_cod->major & BTM_COD_MAJOR_CLASS_MASK; 197 service = p_cod->service & BTM_COD_SERVICE_CLASS_MASK; 198 break; 199 200 default: 201 return false; 202 } 203 204 /* convert the fields into the device class type */ 205 FIELDS_TO_COD(dev_class, minor, major, service); 206 207 if (BTM_SetDeviceClass(dev_class) == BTM_SUCCESS) return true; 208 209 return false; 210 } 211 212 /******************************************************************************* 213 * 214 * Function utl_isintstr 215 * 216 * Description This utility function checks if the given string is an 217 * integer string or not 218 * 219 * 220 * Returns true if successful, Otherwise false 221 * 222 ******************************************************************************/ 223 bool utl_isintstr(const char* p_s) { 224 uint16_t i = 0; 225 226 for (i = 0; p_s[i] != 0; i++) { 227 if (((p_s[i] < '0') || (p_s[i] > '9')) && (p_s[i] != ';')) return false; 228 } 229 230 return true; 231 } 232 233 /******************************************************************************* 234 * 235 * Function utl_isdialchar 236 * 237 * Description This utility function checks if the given character 238 * is an acceptable dial digit 239 * 240 * Returns true if successful, Otherwise false 241 * 242 ******************************************************************************/ 243 bool utl_isdialchar(const char d) { 244 return (((d >= '0') && (d <= '9')) || (d == '*') || (d == '+') || 245 (d == '#') || (d == ';') || ((d >= 'A') && (d <= 'C')) || 246 ((d == 'p') || (d == 'P') || (d == 'w') || (d == 'W'))); 247 } 248 249 /******************************************************************************* 250 * 251 * Function utl_isdialstr 252 * 253 * Description This utility function checks if the given string contains 254 * only dial digits or not 255 * 256 * 257 * Returns true if successful, Otherwise false 258 * 259 ******************************************************************************/ 260 bool utl_isdialstr(const char* p_s) { 261 for (uint16_t i = 0; p_s[i] != 0; i++) { 262 // include chars not in spec that work sent by some headsets. 263 if (!(utl_isdialchar(p_s[i]) || (p_s[i] == '-'))) return false; 264 } 265 return true; 266 } 267
