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tools/hash: protect against invalid arg count

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This commit is contained in:
Danny Robson 2016-06-17 14:58:12 +10:00
parent 850fa0470f
commit e62af110b6
1 changed files with 18 additions and 6 deletions
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24
tools/hash.cpp
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@ -99,17 +99,29 @@ enum {
ARG_CMD,
ARG_HASH,
ARG_INPUT,
NUM_ARGS
};
//-----------------------------------------------------------------------------
void
print_usage (int argc, char **argv)
{
(void)argc;
std::cerr << argv[ARG_CMD] << " [";
for (auto name: NAMES)
std::cerr << name << "|";
std::cerr << "] <input>\n";
}
//-----------------------------------------------------------------------------
int
main (int argc, char **argv) {
if (argc < ARG_INPUT) {
std::cerr << argv[ARG_CMD] << " [";
for (auto name: NAMES)
std::cerr << name << "|";
std::cerr << "] <input>\n";
if (argc != NUM_ARGS) {
print_usage (argc, argv);
return EXIT_FAILURE;
}