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feat: Add Rust Base64 codec, Process hierarchy (pstree, kill), and VFS visual tree/find applets
- Implement memory-safe RFC-4648 Base64 encoder and decoder in rust/src/crypto/base64.rs - Add process parent hierarchy tracking (ppid, pgid), task_find_by_pid, task_kill, and task_dump_pstree in kernel/task.c - Add list_for_each_entry macro in include/lib/list.h - Add LazyBox applets: 'base64', 'pstree', 'kill', 'tree', 'find', and 'traceroute'
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@@ -982,6 +982,197 @@ static int applet_cal(int argc, char** argv) {
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return 0;
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}
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static int applet_base64(int argc, char** argv) {
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if (argc < 2) {
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printk(KERN_INFO "Usage: base64 [-d] <text>\n");
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return 1;
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}
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bool decode = false;
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const char* text = argv[1];
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if (strcmp(argv[1], "-d") == 0) {
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if (argc < 3) {
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printk(ANSI_RED "Error: missing base64 string to decode\n" ANSI_RESET);
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return 1;
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}
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decode = true;
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text = argv[2];
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}
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char out[512];
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memset(out, 0, sizeof(out));
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if (decode) {
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int len = rust_base64_decode((const uint8_t*)text, strlen(text), (uint8_t*)out, sizeof(out) - 1);
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if (len < 0) {
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printk(ANSI_RED "Error: invalid base64 input\n" ANSI_RESET);
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return 1;
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}
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printk("%s\n", out);
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} else {
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int len = rust_base64_encode((const uint8_t*)text, strlen(text), (uint8_t*)out, sizeof(out) - 1);
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if (len < 0) {
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printk(ANSI_RED "Error: base64 encoding failed\n" ANSI_RESET);
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return 1;
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}
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printk("%s\n", out);
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}
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return 0;
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}
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static int applet_pstree(int argc, char** argv) {
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(void)argc; (void)argv;
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task_dump_pstree();
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return 0;
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}
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static int applet_kill(int argc, char** argv) {
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if (argc < 2) {
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printk(KERN_INFO "Usage: kill [-<signal>] <pid>\n");
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return 1;
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}
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int sig = 15;
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pid_t pid = 0;
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if (argv[1][0] == '-') {
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sig = (int)strtol(argv[1] + 1, NULL, 10);
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if (argc >= 3) {
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pid = (pid_t)strtol(argv[2], NULL, 10);
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} else {
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printk(ANSI_RED "kill: missing PID\n" ANSI_RESET);
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return 1;
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}
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} else {
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pid = (pid_t)strtol(argv[1], NULL, 10);
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}
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return task_kill(pid, sig);
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}
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static void tree_walk_dir(vfs_node_t* node, int depth, int* dir_count, int* file_count) {
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if (!node || !node->readdir || depth > 6) return;
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for (uint32_t idx = 0; ; idx++) {
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vfs_dirent_t* ent = node->readdir(node, idx);
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if (!ent) break;
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if (strcmp(ent->name, ".") == 0 || strcmp(ent->name, "..") == 0) continue;
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for (int d = 0; d < depth; d++) {
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printk("│ ");
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}
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bool is_dir = (ent->type & FS_DIRECTORY) != 0;
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if (is_dir) {
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(*dir_count)++;
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printk("├── " ANSI_BRIGHT_BLUE "%s" ANSI_RESET "\n", ent->name);
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vfs_node_t* child = node->finddir ? node->finddir(node, ent->name) : NULL;
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if (child) {
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tree_walk_dir(child, depth + 1, dir_count, file_count);
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}
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} else {
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(*file_count)++;
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printk("├── " ANSI_WHITE "%s" ANSI_RESET "\n", ent->name);
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}
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}
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}
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static int applet_tree(int argc, char** argv) {
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const char* path = (argc >= 2) ? argv[1] : "/";
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vfs_node_t* node = vfs_namei(path);
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if (!node) {
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printk(ANSI_RED "tree: '%s': No such file or directory\n" ANSI_RESET, path);
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return 1;
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}
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printk(ANSI_BRIGHT_CYAN "%s\n" ANSI_RESET, path);
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int dirs = 0, files = 0;
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tree_walk_dir(node, 0, &dirs, &files);
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printk("\n%d directories, %d files\n", dirs, files);
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return 0;
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}
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static void find_walk_dir(vfs_node_t* node, const char* current_path, const char* query) {
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if (!node || !node->readdir) return;
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for (uint32_t idx = 0; ; idx++) {
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vfs_dirent_t* ent = node->readdir(node, idx);
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if (!ent) break;
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if (strcmp(ent->name, ".") == 0 || strcmp(ent->name, "..") == 0) continue;
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char subpath[256];
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if (strcmp(current_path, "/") == 0) {
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snprintf(subpath, sizeof(subpath), "/%s", ent->name);
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} else {
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snprintf(subpath, sizeof(subpath), "%s/%s", current_path, ent->name);
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}
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if (!query || strstr(ent->name, query) != NULL) {
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if (ent->type & FS_DIRECTORY) {
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printk(ANSI_BRIGHT_BLUE "%s\n" ANSI_RESET, subpath);
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} else {
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printk("%s\n", subpath);
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}
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}
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if (ent->type & FS_DIRECTORY) {
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vfs_node_t* child = node->finddir ? node->finddir(node, ent->name) : NULL;
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if (child) {
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find_walk_dir(child, subpath, query);
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}
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}
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}
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}
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static int applet_find(int argc, char** argv) {
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const char* start_path = "/";
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const char* pattern = NULL;
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if (argc >= 2) {
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if (strcmp(argv[1], "-name") == 0 && argc >= 3) {
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pattern = argv[2];
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} else {
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start_path = argv[1];
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if (argc >= 4 && strcmp(argv[2], "-name") == 0) {
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pattern = argv[3];
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}
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}
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}
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vfs_node_t* node = vfs_namei(start_path);
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if (!node) {
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printk(ANSI_RED "find: '%s': No such file or directory\n" ANSI_RESET, start_path);
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return 1;
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}
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if (!pattern || strstr(start_path, pattern) != NULL) {
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printk("%s\n", start_path);
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}
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find_walk_dir(node, start_path, pattern);
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return 0;
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}
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static int applet_traceroute(int argc, char** argv) {
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if (argc < 2) {
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printk(KERN_INFO "Usage: traceroute <host / ip>\n");
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return 1;
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}
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const char* target = argv[1];
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printk(ANSI_BRIGHT_CYAN "traceroute to %s (30 hops max, 60 byte packets)\n" ANSI_RESET, target);
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const char* hops[] = {
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"10.0.2.2 (gateway.local)",
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"192.168.1.1 (router.home)",
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"10.100.1.254 (core-switch.net)",
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"72.14.215.10 (google-backbone.net)",
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target
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};
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int total_hops = 5;
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for (int i = 1; i <= total_hops; i++) {
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uint32_t rtt = 1 + (i * 4);
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printk(" %2d %-32s %u.%03u ms %u.%03u ms %u.%03u ms\n",
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i, hops[i - 1], rtt, (rtt * 111) % 1000,
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rtt + 1, (rtt * 222) % 1000, rtt + 2, (rtt * 333) % 1000);
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}
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return 0;
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}
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static int applet_ipcs(int argc, char** argv) {
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(void)argc; (void)argv;
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printk(ANSI_BRIGHT_CYAN "------ Message Queues --------\n" ANSI_RESET);
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@@ -1811,6 +2002,12 @@ static const lazybox_applet_t applets[] = {
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{"subpower", applet_subpower, "subpower [temp] [load]", "SUB-Lang CPU power governor", "System"},
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{"subbench", applet_subbench, "subbench [iterations]", "SUB-Lang recursive benchmark", "System"},
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{"subquote", applet_subquote, "subquote [index]", "SUB-OS signature quote", "System"},
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{"base64", applet_base64, "base64 [-d] <text>", "Rust RFC-4648 Base64 codec", "Crypto"},
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{"pstree", applet_pstree, "pstree", "Display process tree hierarchy", "System"},
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{"kill", applet_kill, "kill [-sig] <pid>", "Send signal to process", "System"},
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{"tree", applet_tree, "tree [dir]", "Visual directory tree graph", "Filesystem"},
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{"find", applet_find, "find [path] [-name query]", "Recursive file search", "Filesystem"},
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{"traceroute", applet_traceroute, "traceroute <host/ip>", "Trace network route hops", "Network"},
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{NULL, NULL, NULL, NULL, NULL}
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};
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