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Fix pack/unpack for base64; ref #4556

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The pack/unpack "m" directive should be treated as a length rather than
an element count.
This commit is contained in:
dearblue
2019-07-15 11:19:22 +09:00
parent 109d926e9c
commit 4861be1171
1 changed files with 5 additions and 5 deletions
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mrbgems/mruby-pack/src/pack.c
+5 -5
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@@ -1002,7 +1002,7 @@ alias:
case 'm':
dir = PACK_DIR_BASE64;
type = PACK_TYPE_STRING;
flags |= PACK_FLAG_WIDTH;
flags |= PACK_FLAG_WIDTH | PACK_FLAG_COUNT2;
break;
case 'N': /* = "L>" */
dir = PACK_DIR_LONG;
@@ -1196,7 +1196,7 @@ mrb_pack_pack(mrb_state *mrb, mrb_value ary)
default:
break;
}
if (dir == PACK_DIR_STR) { /* always consumes 1 entry */
if (dir == PACK_DIR_STR || dir == PACK_DIR_BASE64) { /* always consumes 1 entry */
aidx++;
break;
}
@@ -1249,6 +1249,9 @@ pack_unpack(mrb_state *mrb, mrb_value str, int single)
case PACK_DIR_STR:
srcidx += unpack_a(mrb, sptr, srclen - srcidx, result, count, flags);
break;
case PACK_DIR_BASE64:
srcidx += unpack_m(mrb, sptr, srclen - srcidx, result, flags);
break;
}
continue;
}
@@ -1275,9 +1278,6 @@ pack_unpack(mrb_state *mrb, mrb_value str, int single)
case PACK_DIR_QUAD:
srcidx += unpack_q(mrb, sptr, srclen - srcidx, result, flags);
break;
case PACK_DIR_BASE64:
srcidx += unpack_m(mrb, sptr, srclen - srcidx, result, flags);
break;
#ifndef MRB_WITHOUT_FLOAT
case PACK_DIR_FLOAT:
srcidx += unpack_float(mrb, sptr, srclen - srcidx, result, flags);