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Fixed parse_canframe() with reordering the checks for the can_id 

delimiter. Before this fix the function may have found delimiters in the 
string behind the terminating zero.
pull/7/head
Oliver Hartkopp 2008-11-28 21:50:24 +00:00
parent e7046e7fca
commit 450a058072
1 changed files with 11 additions and 12 deletions
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21
lib.c
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@ -114,10 +114,16 @@ int parse_canframe(char *cs, struct can_frame *cf) {
if (len < 4)
return 1;
if (!((cs[3] == CANID_DELIM) || (cs[8] == CANID_DELIM)))
return 1;
if (cs[3] == CANID_DELIM) { /* 3 digits */
if (cs[8] == CANID_DELIM) { /* 8 digits */
idx = 4;
for (i=0; i<3; i++){
if ((tmp = asc2nibble(cs[i])) > 0x0F)
return 1;
cf->can_id |= (tmp << (2-i)*4);
}
} else if (cs[8] == CANID_DELIM) { /* 8 digits */
idx = 9;
for (i=0; i<8; i++){
@ -128,15 +134,8 @@ int parse_canframe(char *cs, struct can_frame *cf) {
if (!(cf->can_id & CAN_ERR_FLAG)) /* 8 digits but no errorframe? */
cf->can_id |= CAN_EFF_FLAG; /* then it is an extended frame */
} else { /* 3 digits */
idx = 4;
for (i=0; i<3; i++){
if ((tmp = asc2nibble(cs[i])) > 0x0F)
} else
return 1;
cf->can_id |= (tmp << (2-i)*4);
}
}
if((cs[idx] == 'R') || (cs[idx] == 'r')){ /* RTR frame */
cf->can_id |= CAN_RTR_FLAG;