134 lines
2.9 KiB
C
134 lines
2.9 KiB
C
#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <rune.h>
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#include <stdlib.h>
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_RuneLocale *
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_Read_RuneMagi(fp)
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FILE *fp;
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{
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char *data;
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void *lastp;
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_RuneLocale *rl;
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_RuneEntry *rr;
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struct stat sb;
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int x;
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if (fstat(fileno(fp), &sb) < 0)
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return(0);
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if (sb.st_size < sizeof(_RuneLocale))
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return(0);
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if ((data = malloc(sb.st_size)) == NULL)
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return(0);
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rewind(fp); /* Someone might have read the magic number once already */
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if (fread(data, sb.st_size, 1, fp) != 1) {
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free(data);
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return(0);
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}
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rl = (_RuneLocale *)data;
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lastp = data + sb.st_size;
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rl->variable = rl + 1;
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if (memcmp(rl->magic, _RUNE_MAGIC_1, sizeof(rl->magic))) {
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free(data);
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return(0);
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}
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rl->invalid_rune = ntohl(rl->invalid_rune);
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rl->variable_len = ntohl(rl->variable_len);
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rl->runetype_ext.nranges = ntohl(rl->runetype_ext.nranges);
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rl->maplower_ext.nranges = ntohl(rl->maplower_ext.nranges);
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rl->mapupper_ext.nranges = ntohl(rl->mapupper_ext.nranges);
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for (x = 0; x < _CACHED_RUNES; ++x) {
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rl->runetype[x] = ntohl(rl->runetype[x]);
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rl->maplower[x] = ntohl(rl->maplower[x]);
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rl->mapupper[x] = ntohl(rl->mapupper[x]);
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}
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rl->runetype_ext.ranges = (_RuneEntry *)rl->variable;
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rl->variable = rl->runetype_ext.ranges + rl->runetype_ext.nranges;
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if (rl->variable > lastp) {
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free(data);
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return(0);
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}
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rl->maplower_ext.ranges = (_RuneEntry *)rl->variable;
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rl->variable = rl->maplower_ext.ranges + rl->maplower_ext.nranges;
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if (rl->variable > lastp) {
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free(data);
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return(0);
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}
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rl->mapupper_ext.ranges = (_RuneEntry *)rl->variable;
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rl->variable = rl->mapupper_ext.ranges + rl->mapupper_ext.nranges;
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if (rl->variable > lastp) {
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free(data);
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return(0);
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}
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for (x = 0; x < rl->runetype_ext.nranges; ++x) {
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rr = rl->runetype_ext.ranges;
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rr[x].min = ntohl(rr[x].min);
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rr[x].max = ntohl(rr[x].max);
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if ((rr[x].map = ntohl(rr[x].map)) == 0) {
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int len = rr[x].max - rr[x].min + 1;
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rr[x].types = rl->variable;
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rl->variable = rr[x].types + len;
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if (rl->variable > lastp) {
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free(data);
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return(0);
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}
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while (len-- > 0)
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rr[x].types[len] = ntohl(rr[x].types[len]);
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} else
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rr[x].types = 0;
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}
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for (x = 0; x < rl->maplower_ext.nranges; ++x) {
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rr = rl->maplower_ext.ranges;
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rr[x].min = ntohl(rr[x].min);
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rr[x].max = ntohl(rr[x].max);
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rr[x].map = ntohl(rr[x].map);
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}
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for (x = 0; x < rl->mapupper_ext.nranges; ++x) {
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rr = rl->mapupper_ext.ranges;
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rr[x].min = ntohl(rr[x].min);
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rr[x].max = ntohl(rr[x].max);
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rr[x].map = ntohl(rr[x].map);
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}
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if (((char *)rl->variable) + rl->variable_len > (char *)lastp) {
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free(data);
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return(0);
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}
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/*
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* Go out and zero pointers that should be zero.
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*/
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if (!rl->variable_len)
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rl->variable = 0;
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if (!rl->runetype_ext.nranges)
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rl->runetype_ext.ranges = 0;
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if (!rl->maplower_ext.nranges)
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rl->maplower_ext.ranges = 0;
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if (!rl->mapupper_ext.nranges)
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rl->mapupper_ext.ranges = 0;
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return(rl);
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}
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