Slightly better check of attributes. Now, mem_list_next can actually stop when the...
[openssl.git] / crypto / store / str_lib.c
index ab3fd42..a8bd531 100644 (file)
@@ -1536,21 +1536,94 @@ int STORE_parse_attrs_endp(void *handle)
        return 0;
        }
 
-int STORE_ATTR_INFO_compare(STORE_ATTR_INFO *a, STORE_ATTR_INFO *b)
+static int attr_info_compare_compute_range(
+       unsigned char *abits, unsigned char *bbits,
+       unsigned int *alowp, unsigned int *ahighp,
+       unsigned int *blowp, unsigned int *bhighp)
        {
-       unsigned char *abits, *bbits;
-       int i;
+       unsigned int alow = (unsigned int)-1, ahigh = 0;
+       unsigned int blow = (unsigned int)-1, bhigh = 0;
+       int i, res = 0;
 
-       if (a == b) return 0;
-       if (!a) return -1;
-       if (!b) return 1;
-       abits = a->set;
-       bbits = b->set;
        for (i = 0; i < (STORE_ATTR_TYPE_NUM + 8) / 8; i++, abits++, bbits++)
                {
-               if (*abits < *bbits) return -1;
-               if (*abits > *bbits) return 1;
+               if (res == 0)
+                       {
+                       if (*abits < *bbits) res = -1;
+                       if (*abits > *bbits) res = 1;
+                       }
+               if (*abits)
+                       {
+                       if (alow == (unsigned int)-1)
+                               {
+                               alow = i * 8;
+                               if (!(*abits & 0x01)) alow++;
+                               if (!(*abits & 0x02)) alow++;
+                               if (!(*abits & 0x04)) alow++;
+                               if (!(*abits & 0x08)) alow++;
+                               if (!(*abits & 0x10)) alow++;
+                               if (!(*abits & 0x20)) alow++;
+                               if (!(*abits & 0x40)) alow++;
+                               }
+                       ahigh = i * 8 + 7;
+                       if (!(*abits & 0x80)) ahigh++;
+                       if (!(*abits & 0x40)) ahigh++;
+                       if (!(*abits & 0x20)) ahigh++;
+                       if (!(*abits & 0x10)) ahigh++;
+                       if (!(*abits & 0x08)) ahigh++;
+                       if (!(*abits & 0x04)) ahigh++;
+                       if (!(*abits & 0x02)) ahigh++;
+                       }
+               if (*bbits)
+                       {
+                       if (blow == (unsigned int)-1)
+                               {
+                               blow = i * 8;
+                               if (!(*bbits & 0x01)) blow++;
+                               if (!(*bbits & 0x02)) blow++;
+                               if (!(*bbits & 0x04)) blow++;
+                               if (!(*bbits & 0x08)) blow++;
+                               if (!(*bbits & 0x10)) blow++;
+                               if (!(*bbits & 0x20)) blow++;
+                               if (!(*bbits & 0x40)) blow++;
+                               }
+                       bhigh = i * 8 + 7;
+                       if (!(*bbits & 0x80)) bhigh++;
+                       if (!(*bbits & 0x40)) bhigh++;
+                       if (!(*bbits & 0x20)) bhigh++;
+                       if (!(*bbits & 0x10)) bhigh++;
+                       if (!(*bbits & 0x08)) bhigh++;
+                       if (!(*bbits & 0x04)) bhigh++;
+                       if (!(*bbits & 0x02)) bhigh++;
+                       }
                }
+       if (ahigh + alow < bhigh + blow) res = -1;
+       if (ahigh + alow > bhigh + blow) res = 1;
+       if (alowp) *alowp = alow;
+       if (ahighp) *ahighp = ahigh;
+       if (blowp) *blowp = blow;
+       if (bhighp) *bhighp = bhigh;
+       return res;
+       }
+
+int STORE_ATTR_INFO_compare(STORE_ATTR_INFO *a, STORE_ATTR_INFO *b)
+       {
+       if (a == b) return 0;
+       if (!a) return -1;
+       if (!b) return 1;
+       return attr_info_compare_compute_range(a->set, b->set, 0, 0, 0, 0);
+       }
+int STORE_ATTR_INFO_in_range(STORE_ATTR_INFO *a, STORE_ATTR_INFO *b)
+       {
+       unsigned int alow, ahigh, blow, bhigh;
+
+       if (a == b) return 1;
+       if (!a) return 0;
+       if (!b) return 0;
+       attr_info_compare_compute_range(a->set, b->set,
+               &alow, &ahigh, &blow, &bhigh);
+       if (alow >= blow && ahigh <= bhigh)
+               return 1;
        return 0;
        }
 int STORE_ATTR_INFO_in(STORE_ATTR_INFO *a, STORE_ATTR_INFO *b)
@@ -1565,7 +1638,7 @@ int STORE_ATTR_INFO_in(STORE_ATTR_INFO *a, STORE_ATTR_INFO *b)
        bbits = b->set;
        for (i = 0; i < (STORE_ATTR_TYPE_NUM + 8) / 8; i++, abits++, bbits++)
                {
-               if (*abits && *bbits != *abits)
+               if (*abits && (*bbits & *abits) != *abits)
                        return 0;
                }
        return 1;