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Merge #15744: refactor: Extract ParseDescriptorRange

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510c6532ba Extract ParseDescriptorRange (Ben Woosley)

Pull request description:

  So as to be consistently informative when the checks fail, and
  to protect against unintentional divergence among the checks.

ACKs for commit 510c65:
  meshcollider:
    Oh apologies, yes. Thanks :) utACK 510c6532ba
  MarcoFalke:
    utACK 510c6532ba
  sipa:
    utACK 510c6532ba

Tree-SHA512: b1f0792bfaa163890a20654a0fc2c4c4a996659916bf5f4a495662436b39326692a1a0c825caafd859e48c05f5dd1865c4f7c28092be5074edda3c94f94f9f8b
This commit is contained in:
MarcoFalke
2019-05-10 08:09:34 -04:00
parent 87dbf89271 510c6532ba
commit 14959753a4
7 changed files with 48 additions and 23 deletions
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20
src/rpc/util.cpp
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@@ -8,6 +8,8 @@
#include <tinyformat.h>
#include <util/strencodings.h>
#include <tuple>
InitInterfaces* g_rpc_interfaces = nullptr;
void RPCTypeCheck(const UniValue& params,
@@ -654,7 +656,7 @@ std::string RPCArg::ToString(const bool oneline) const
assert(false);
}
std::pair<int64_t, int64_t> ParseRange(const UniValue& value)
static std::pair<int64_t, int64_t> ParseRange(const UniValue& value)
{
if (value.isNum()) {
return {0, value.get_int64()};
@@ -667,3 +669,19 @@ std::pair<int64_t, int64_t> ParseRange(const UniValue& value)
}
throw JSONRPCError(RPC_INVALID_PARAMETER, "Range must be specified as end or as [begin,end]");
}
std::pair<int64_t, int64_t> ParseDescriptorRange(const UniValue& value)
{
int64_t low, high;
std::tie(low, high) = ParseRange(value);
if (low < 0) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Range should be greater or equal than 0");
}
if ((high >> 31) != 0) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "End of range is too high");
}
if (high >= low + 1000000) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Range is too large");
}
return {low, high};
}