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core(persistence): add more checks for implementation limitations

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This commit is contained in:
Alexander Alekhin
2019-11-07 14:01:51 +03:00
parent 417034518c
commit f42d5399aa
2 changed files with 12 additions and 2 deletions
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modules/core/src/persistence_json.cpp
+8
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@@ -578,10 +578,14 @@ public:
sz = (int)(ptr - beg);
if( sz > 0 )
{
if (i + sz >= CV_FS_MAX_LEN)
CV_PARSE_ERROR_CPP("string is too long");
memcpy(buf + i, beg, sz);
i += sz;
}
ptr++;
if (i + 1 >= CV_FS_MAX_LEN)
CV_PARSE_ERROR_CPP("string is too long");
switch ( *ptr )
{
case '\\':
@@ -605,6 +609,8 @@ public:
sz = (int)(ptr - beg);
if( sz > 0 )
{
if (i + sz >= CV_FS_MAX_LEN)
CV_PARSE_ERROR_CPP("string is too long");
memcpy(buf + i, beg, sz);
i += sz;
}
@@ -620,6 +626,8 @@ public:
sz = (int)(ptr - beg);
if( sz > 0 )
{
if (i + sz >= CV_FS_MAX_LEN)
CV_PARSE_ERROR_CPP("string is too long");
memcpy(buf + i, beg, sz);
i += sz;
}