/* * Convert an expression of the following forms to an off_t. This is the * same as get_num(), but it uses signed numbers. * * The major problem here is that an off_t may not necessarily be a intmax_t. */ static off_t get_off_t(const char *val) { intmax_t num, mult, prevnum; char *expr; errno = 0; num = strtoq(val, &expr, 0); if (errno != 0) /* Overflow or underflow. */ err(1, "%s", oper); if (expr == val) /* No valid digits. */ errx(1, "%s: illegal numeric value", oper); mult = postfix_to_mult(*expr); if (mult != 0) { prevnum = num; num *= mult; /* Check for overflow. */ if ((prevnum > 0) != (num > 0) || num / mult != prevnum) goto erange; expr++; } switch (*expr) { case '\0': break; case '*': /* Backward compatible. */ case 'X': case 'x': mult = (intmax_t)get_off_t(expr + 1); prevnum = num; num *= mult; if ((prevnum > 0) == (num > 0) && num / mult == prevnum) break; erange: errx(1, "%s: %s", oper, strerror(ERANGE)); default: errx(1, "%s: illegal numeric value", oper); } return (num); }
/* Add a new outchannel line * returns pointer to new object if it succeeds, NULL otherwise. * An outchannel line is primarily a set of fields delemited by commas. * There might be some whitespace between the field (but not within) * and the commas. This can be removed. */ struct outchannel *ochAddLine(char* pName, uchar** ppRestOfConfLine) { struct outchannel *pOch; uchar *p; assert(pName != NULL); assert(ppRestOfConfLine != NULL); if((pOch = ochConstruct()) == NULL) return NULL; pOch->iLenName = strlen(pName); pOch->pszName = (char*) MALLOC(sizeof(char) * (pOch->iLenName + 1)); if(pOch->pszName == NULL) { dbgprintf("ochAddLine could not alloc memory for outchannel name!"); pOch->iLenName = 0; return NULL; /* I know - we create a memory leak here - but I deem * it acceptable as it is a) a very small leak b) very * unlikely to happen. rgerhards 2004-11-17 */ } memcpy(pOch->pszName, pName, pOch->iLenName + 1); /* now actually parse the line */ p = *ppRestOfConfLine; assert(p != NULL); /* get params */ get_Field(&p, &pOch->pszFileTemplate); if(*p) get_off_t(&p, &pOch->uSizeLimit); if(*p) get_restOfLine(&p, &pOch->cmdOnSizeLimit); *ppRestOfConfLine = p; return(pOch); }
static void f_skip(char *arg) { in.offset = get_off_t(arg); }
static void f_seek(char *arg) { out.offset = get_off_t(arg); }