Showing the changes to src/vm/module_resolver.cpp (1 of 17 files). Show all
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| 1 | +// | |
| 2 | +// Dis VM | |
| 3 | +// File: module_resolver.cpp | |
| 4 | +// Author: arr | |
| 5 | +// | |
| 6 | + | |
| 7 | +#include <cassert> | |
| 8 | +#include <fstream> | |
| 9 | +#include <sstream> | |
| 10 | +#include <disvm.h> | |
| 11 | +#include <debug.h> | |
| 12 | +#include <exceptions.h> | |
| 13 | +#include "module_resolver.h" | |
| 14 | + | |
| 15 | +using namespace disvm::runtime; | |
| 16 | + | |
| 17 | +// Empty destructor for vm module resolver 'interface' | |
| 18 | +vm_module_resolver_t::~vm_module_resolver_t() | |
| 19 | +{ } | |
| 20 | + | |
| 21 | +default_resolver_t::default_resolver_t(disvm::vm_t &vm) | |
| 22 | + : _vm{ vm } | |
| 23 | +{ } | |
| 24 | + | |
| 25 | +default_resolver_t::default_resolver_t(disvm::vm_t &vm, std::vector<std::string> probing_paths) | |
| 26 | + : _probing_paths{ std::move(probing_paths) } | |
| 27 | + , _vm{ vm } | |
| 28 | +{ } | |
| 29 | + | |
| 30 | +default_resolver_t::~default_resolver_t() | |
| 31 | +{ } | |
| 32 | + | |
| 33 | +bool default_resolver_t::try_resolve_module(const char *path, std::unique_ptr<vm_module_t> &new_module) | |
| 34 | +{ | |
| 35 | + assert(path != nullptr); | |
| 36 | + | |
| 37 | + auto log = debug::is_component_tracing_enabled<debug::component_trace_t::module>(); | |
| 38 | + if (log) | |
| 39 | + debug::log_msg(debug::component_trace_t::module, debug::log_level_t::debug, "resolve: try module path: >>%s<<", path); | |
| 40 | + | |
| 41 | + auto module_file = std::ifstream{ path, std::ifstream::binary }; | |
| 42 | + if (!module_file.is_open()) | |
| 43 | + { | |
| 44 | + // The raw path isn't valid, try using probing paths | |
| 45 | + for (auto p : _probing_paths) | |
| 46 | + { | |
| 47 | + p.append(path); | |
| 48 | + if (log) | |
| 49 | + debug::log_msg(debug::component_trace_t::module, debug::log_level_t::debug, "resolve: try module path: >>%s<<", p.c_str()); | |
| 50 | + | |
| 51 | + module_file = std::ifstream{ p, std::ifstream::binary }; | |
| 52 | + if (module_file.is_open()) | |
| 53 | + { | |
| 54 | + if (log) | |
| 55 | + debug::log_msg(debug::component_trace_t::module, debug::log_level_t::debug, "resolve: successful modified module path: >>%s<< >>%s<<", path, p.c_str()); | |
| 56 | + | |
| 57 | + break; | |
| 58 | + } | |
| 59 | + } | |
| 60 | + | |
| 61 | + if (!module_file.is_open()) | |
| 62 | + { | |
| 63 | + push_syscall_error_message(_vm, "Unable to resolve path"); | |
| 64 | + return false; | |
| 65 | + } | |
| 66 | + } | |
| 67 | + | |
| 68 | + new_module = disvm::read_module(module_file); | |
| 69 | + assert(new_module != nullptr); | |
| 70 | + | |
| 71 | + return true; | |
| 72 | +} | |