[Qt] prevent amount overflow problem with payment requests

Bitcoin amounts are stored as uint64 in the protobuf messages (see
paymentrequest.proto), but CAmount is defined as int64_t. Because
of that we need to verify that single and accumulated amounts are
in a valid range and no variable overflow has happened.

- fixes #5624 (#5622)

Thanks @SergioDemianLerner for reporting that issue and also supplying us
with a possible solution.

- add static verifyAmount() function to PaymentServer and move the logging
  on error into the function
- also add a unit test to paymentservertests.cpp
This commit is contained in:
Philip Kaufmann
2015-01-09 14:25:43 +01:00
parent 31dedb463b
commit a6516686dc
4 changed files with 69 additions and 0 deletions

View File

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//
// Payment request with amount overflow (amount is set to 21000001 BTC)
//
const char* paymentrequest5_cert2_BASE64 =
"\
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";