141 lines
4.3 KiB
C
141 lines
4.3 KiB
C
/* am.c — MeowOS 活动管理器用户侧 CLI（AMSD_DESIGN.md §3，安卓习惯，进固件 /usr/bin/am）。
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*
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* 连 amsd sock（--sock/MEOW_AMS_SOCK，默认 /usr/data/meow_ams.sock），发一条命令行，
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* 读响应直到 EOF，格式化输出。root 免鉴权（读）；写操作（start/kill）一期仅 root/系统身份。
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*
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* 子命令：
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* am status → 在跑 App 表（pkg/状态/pid/运行时长/activity）
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* am list → 注册表 + 状态（pkg/name/state/pid/launches/crashes）
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* am history [pkg] → 事件历史（每 App 最近 8 条；无 pkg=全部）
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* am start <pkg>[/<activity>] → 经 amsd→launcher 拉起
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* am kill <pkg> → 经 amsd→launcher 终止（SIGTERM 语义）
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*
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* 编译（mipsel 静态）：zig-mipsel-cc -Os -Wall -Wextra -static am.c -o am
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* 宿主：gcc -Os -Wall -Wextra am.c -o am_host
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#define AMS_SOCK_DEFAULT "/usr/data/meow_ams.sock"
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#define AMS_SOCK_PATH_MAX 108
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#define AMS_RESP_MAX 65536
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static const char *g_sock = NULL;
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static int connect_path(const char *path)
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{
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int fd = socket(AF_UNIX, SOCK_STREAM, 0);
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if (fd < 0) { perror("socket"); return -1; }
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struct sockaddr_un a;
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memset(&a, 0, sizeof a);
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a.sun_family = AF_UNIX;
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snprintf(a.sun_path, sizeof a.sun_path, "%s", path);
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if (connect(fd, (struct sockaddr *)&a, sizeof a) < 0) {
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fprintf(stderr, "connect %s: %s\n", path, strerror(errno));
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close(fd);
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return -1;
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}
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return fd;
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}
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/* 发送单行命令，读取响应直到 EOF，打印。返回 0=ok。 */
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static int am_query(const char *cmd)
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{
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int fd = connect_path(g_sock);
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if (fd < 0) return 1;
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ssize_t w = write(fd, cmd, strlen(cmd));
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(void)w;
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static char resp[AMS_RESP_MAX];
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size_t n = 0;
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char tmp[2048];
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ssize_t r;
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while ((r = read(fd, tmp, sizeof tmp)) > 0) {
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if (n + (size_t)r < sizeof resp - 1) { memcpy(resp + n, tmp, (size_t)r); n += (size_t)r; }
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}
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close(fd);
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resp[n] = '\0';
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fputs(resp, stdout);
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return 0;
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}
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static int cmd_status(void)
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{
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return am_query("status\n");
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}
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static int cmd_list(void)
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{
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return am_query("list\n");
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}
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static int cmd_history(const char *pkg)
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{
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char line[512];
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if (pkg && pkg[0])
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snprintf(line, sizeof line, "history %s\n", pkg);
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else
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snprintf(line, sizeof line, "history\n");
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return am_query(line);
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}
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static int cmd_start(const char *spec)
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{
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if (geteuid() != 0) { printf("ERR permission denied (root only)\n"); return 1; }
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char line[512];
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snprintf(line, sizeof line, "start %s\n", spec);
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return am_query(line);
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}
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static int cmd_kill(const char *pkg)
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{
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if (geteuid() != 0) { printf("ERR permission denied (root only)\n"); return 1; }
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char line[512];
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snprintf(line, sizeof line, "kill %s\n", pkg);
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return am_query(line);
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}
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static void usage(const char *a0)
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{
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fprintf(stderr,
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"usage: %s [--sock <path>] status|list|history [pkg]|start <pkg>[/<act>]|kill <pkg>\n"
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" --sock <path> amsd socket (default %s, or $MEOW_AMS_SOCK)\n",
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a0, AMS_SOCK_DEFAULT);
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}
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int main(int argc, char **argv)
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{
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const char *env = getenv("MEOW_AMS_SOCK");
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g_sock = (env && env[0]) ? env : AMS_SOCK_DEFAULT;
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const char *cmd = NULL, *arg = NULL;
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for (int i = 1; i < argc; i++) {
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const char *a = argv[i];
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if (!strcmp(a, "--sock") && i + 1 < argc) g_sock = argv[++i];
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else if (!strcmp(a, "-h") || !strcmp(a, "--help")) { usage(argv[0]); return 0; }
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else if (a[0] == '-') { usage(argv[0]); return 2; }
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else if (!cmd) cmd = a;
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else if (!arg) arg = a;
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else { fprintf(stderr, "extra arg %s\n", a); return 2; }
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}
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if (!cmd) { usage(argv[0]); return 2; }
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if (!strcmp(cmd, "status")) return cmd_status();
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if (!strcmp(cmd, "list")) return cmd_list();
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if (!strcmp(cmd, "history")) return cmd_history(arg);
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if (!strcmp(cmd, "start")) {
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if (!arg) { fprintf(stderr, "start needs <pkg>[/<act>]\n"); return 2; }
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return cmd_start(arg);
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}
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if (!strcmp(cmd, "kill")) {
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if (!arg) { fprintf(stderr, "kill needs <pkg>\n"); return 2; }
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return cmd_kill(arg);
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}
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usage(argv[0]);
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return 2;
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}
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