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Diffstat (limited to 'cfe/cfe/lib/lib_misc.c')
| -rw-r--r-- | cfe/cfe/lib/lib_misc.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/cfe/cfe/lib/lib_misc.c b/cfe/cfe/lib/lib_misc.c new file mode 100644 index 0000000..e5a2a02 --- /dev/null +++ b/cfe/cfe/lib/lib_misc.c @@ -0,0 +1,229 @@ +/* ********************************************************************* + * Broadcom Common Firmware Environment (CFE) + * + * Misc. library routines File: lib_misc.c + * + * Miscellaneous library routines. + * + * Author: Mitch Lichtenberg (mpl@broadcom.com) + * + ********************************************************************* + * + * Copyright 2000,2001,2002,2003 + * Broadcom Corporation. All rights reserved. + * + * This software is furnished under license and may be used and + * copied only in accordance with the following terms and + * conditions. Subject to these conditions, you may download, + * copy, install, use, modify and distribute modified or unmodified + * copies of this software in source and/or binary form. No title + * or ownership is transferred hereby. + * + * 1) Any source code used, modified or distributed must reproduce + * and retain this copyright notice and list of conditions + * as they appear in the source file. + * + * 2) No right is granted to use any trade name, trademark, or + * logo of Broadcom Corporation. The "Broadcom Corporation" + * name may not be used to endorse or promote products derived + * from this software without the prior written permission of + * Broadcom Corporation. + * + * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED + * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR + * PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT + * SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN + * PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE), EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + ********************************************************************* */ + + +#include "lib_types.h" +#include "lib_malloc.h" +#define _LIB_NO_MACROS_ +#include "lib_string.h" + + +/* ********************************************************************* + * lib_parseipaddr(ipaddr,dest) + * + * Parse an IP address. + * + * Input parameters: + * ipaddr - string of IP address + * dest - pointer to 4 bytes to receive binary IP address + * + * Return value: + * 0 if ok + * -1 if ip address is invalid + ********************************************************************* */ + +int lib_parseipaddr(const char *ipaddr,uint8_t *dest) +{ + int a,b,c,d; + char *x; + + /* make sure it's all digits and dots. */ + x = (char *) ipaddr; + while (*x) { + if ((*x == '.') || ((*x >= '0') && (*x <= '9'))) { + x++; + continue; + } + return -1; + } + + x = (char *) ipaddr; + a = lib_atoi(ipaddr); + x = lib_strchr(x,'.'); + if (!x) return -1; + b = lib_atoi(x+1); + x = lib_strchr(x+1,'.'); + if (!x) return -1; + c = lib_atoi(x+1); + x = lib_strchr(x+1,'.'); + if (!x) return -1; + d = lib_atoi(x+1); + + if ((a < 0) || (a > 255)) return -1; + if ((b < 0) || (b > 255)) return -1; + if ((c < 0) || (c > 255)) return -1; + if ((d < 0) || (d > 255)) return -1; + + dest[0] = (uint8_t) a; + dest[1] = (uint8_t) b; + dest[2] = (uint8_t) c; + dest[3] = (uint8_t) d; + + return 0; +} + + +/* ********************************************************************* + * lib_lookup(list,str) + * + * Look up an element on a {string,value} list. + * + * Input parameters: + * list - list to search + * str - string to find on the list + * + * Return value: + * 0 if string was not found + * else number associated with this string + ********************************************************************* */ + +int lib_lookup(const cons_t *list,char *str) +{ + while (list->str) { + if (lib_strcmp(list->str,str) == 0) return list->num; + list++; + } + + return 0; + +} + +/* ********************************************************************* + * lib_findinlist(list,str) + * + * Like lib_lookup but returns cons structure instead of value + * + * Input parameters: + * list - list of associations + * str - what to find + * + * Return value: + * cons_t or null if not found + ********************************************************************* */ + +static const cons_t *lib_findinlist(const cons_t *list,char *str) +{ + while (list->str) { + if (lib_strcmp(list->str,str) == 0) return list; + list++; + } + return NULL; +} + + +/* ********************************************************************* + * lib_setoptions(list,str,flags) + * + * Set or reset one or more bits in a flags variable based + * on the list of valid bits and a string containing what + * to change. flags starts off as a default value. + * + * The input string is a comma-separated list of options, + * optionally prefixed by "no_" or "no" to invert the + * sense of the option. negative values in the table + * remove options, positive add options (you can't use + * bit 31 as an option for this reason). + * + * Input parameters: + * list - list of valid options + * str - options to parse + * flags - pointer to variable to be modified + * + * Return value: + * number of options we did not understand, 0=ok + ********************************************************************* */ + +int lib_setoptions(const cons_t *list,char *str,unsigned int *flags) +{ + char *dupstr; + char *x; + char *ptr; + const cons_t *val; + int newbits; + int errors = 0; + + if (!list || !str || !flags) return 0; + + dupstr = lib_strdup(str); + if (!dupstr) return 0; + + ptr = dupstr; + + while (*ptr) { + if ((x = lib_strchr(ptr,','))) { + *x = '\0'; + } + + val = lib_findinlist(list,ptr); + newbits = 0; + if (!val) { + if (lib_memcmp(ptr,"no_",3) == 0) { + val = lib_findinlist(list,ptr+3); + } + else if (lib_memcmp(ptr,"no",2) == 0) { + val = lib_findinlist(list,ptr+2); + } + if (val) newbits = ~((unsigned int) (val->num)); + else errors++; + } + else { + newbits = (val->num); + } + + /* if new bits are negative, it's an AND mask + otherwise it's an OR mask */ + + if (newbits < 0) *flags &= (unsigned int) newbits; + else *flags |= (unsigned int) newbits; + + if (x) ptr = x+1; + else break; + } + + KFREE(dupstr); + + return errors; +} |