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- External apps can opt into automatic cleanup when they exit, including tracked tasks, threads, files, directories, and memory. - App-relative file paths resolve against the app’s working directory, with `.` and `..` normalized. - The shell identifies ELF binaries that cannot be executed instead of treating them as scripts. - Shared icon fonts now offer distinct default and large sizes, with updated icons across the interface. - ESP32 apps can load additional ELF formats when address mirroring is enabled. - Terminal colors render clearly on monochrome displays, and toolbar buttons have cleaner styling. - GPS settings safely refresh their device list when their window is hidden or its widgets are destroyed.
60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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#include <app/elf_check.h>
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#include <cstdio>
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#include <cstring>
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namespace {
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constexpr size_t ELF_HEADER_PREFIX_SIZE = 20; // e_ident[16] + e_type(2) + e_machine(2)
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constexpr uint8_t ELF_MAGIC[4] = { 0x7f, 'E', 'L', 'F' };
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uint16_t read_le16(const uint8_t* bytes) {
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return static_cast<uint16_t>(bytes[0] | (bytes[1] << 8));
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}
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} // namespace
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bool elf_check_file(const char* path, const struct ElfRequirements* requirements) {
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FILE* file = fopen(path, "rb");
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if (file == nullptr) {
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return false;
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}
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uint8_t header[ELF_HEADER_PREFIX_SIZE];
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size_t read = fread(header, 1, sizeof(header), file);
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fclose(file);
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if (read != sizeof(header)) {
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return false;
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}
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if (memcmp(header, ELF_MAGIC, sizeof(ELF_MAGIC)) != 0) {
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return false;
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}
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uint8_t elf_class = header[4]; // e_ident[EI_CLASS]
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uint8_t data = header[5]; // e_ident[EI_DATA]
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uint16_t type = read_le16(header + 16); // e_type
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uint16_t machine = read_le16(header + 18); // e_machine
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return elf_class == requirements->elf_class
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&& data == requirements->data
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&& type < 32
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&& (requirements->types & ELF_TYPE_MASK(type)) != 0
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&& machine == requirements->machine;
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}
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bool elf_has_magic(const char* path) {
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FILE* file = fopen(path, "rb");
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if (file == nullptr) {
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return false;
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}
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uint8_t magic[sizeof(ELF_MAGIC)];
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size_t read = fread(magic, 1, sizeof(magic), file);
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fclose(file);
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return read == sizeof(magic) && memcmp(magic, ELF_MAGIC, sizeof(ELF_MAGIC)) == 0;
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}
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