| /* |
| * Copyright (C) 2007 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <string.h> |
| #include <errno.h> |
| |
| #include "sysdeps.h" |
| |
| #define TRACE_TAG TRACE_ADB |
| #include "adb.h" |
| #include "file_sync_service.h" |
| |
| #if ADB_HOST |
| # ifndef HAVE_WINSOCK |
| # include <netinet/in.h> |
| # include <netdb.h> |
| # endif |
| #else |
| # include <sys/reboot.h> |
| #endif |
| |
| typedef struct stinfo stinfo; |
| |
| struct stinfo { |
| void (*func)(int fd, void *cookie); |
| int fd; |
| void *cookie; |
| }; |
| |
| |
| void *service_bootstrap_func(void *x) |
| { |
| stinfo *sti = x; |
| sti->func(sti->fd, sti->cookie); |
| free(sti); |
| return 0; |
| } |
| |
| #if ADB_HOST |
| ADB_MUTEX_DEFINE( dns_lock ); |
| |
| static void dns_service(int fd, void *cookie) |
| { |
| char *hostname = cookie; |
| struct hostent *hp; |
| unsigned zero = 0; |
| |
| adb_mutex_lock(&dns_lock); |
| hp = gethostbyname(hostname); |
| free(cookie); |
| if(hp == 0) { |
| writex(fd, &zero, 4); |
| } else { |
| writex(fd, hp->h_addr, 4); |
| } |
| adb_mutex_unlock(&dns_lock); |
| adb_close(fd); |
| } |
| #else |
| extern int recovery_mode; |
| |
| static void recover_service(int s, void *cookie) |
| { |
| unsigned char buf[4096]; |
| unsigned count = (unsigned) cookie; |
| int fd; |
| |
| fd = adb_creat("/tmp/update", 0644); |
| if(fd < 0) { |
| adb_close(s); |
| return; |
| } |
| |
| while(count > 0) { |
| unsigned xfer = (count > 4096) ? 4096 : count; |
| if(readx(s, buf, xfer)) break; |
| if(writex(fd, buf, xfer)) break; |
| count -= xfer; |
| } |
| |
| if(count == 0) { |
| writex(s, "OKAY", 4); |
| } else { |
| writex(s, "FAIL", 4); |
| } |
| adb_close(fd); |
| adb_close(s); |
| |
| fd = adb_creat("/tmp/update.begin", 0644); |
| adb_close(fd); |
| } |
| |
| void restart_root_service(int fd, void *cookie) |
| { |
| char buf[100]; |
| char value[PROPERTY_VALUE_MAX]; |
| |
| if (getuid() == 0) { |
| snprintf(buf, sizeof(buf), "adbd is already running as root\n"); |
| writex(fd, buf, strlen(buf)); |
| adb_close(fd); |
| } else { |
| property_get("ro.debuggable", value, ""); |
| if (strcmp(value, "1") != 0) { |
| snprintf(buf, sizeof(buf), "adbd cannot run as root in production builds\n"); |
| writex(fd, buf, strlen(buf)); |
| adb_close(fd); |
| return; |
| } |
| |
| property_set("service.adb.root", "1"); |
| snprintf(buf, sizeof(buf), "restarting adbd as root\n"); |
| writex(fd, buf, strlen(buf)); |
| adb_close(fd); |
| |
| // quit, and init will restart us as root |
| sleep(1); |
| exit(1); |
| } |
| } |
| |
| void restart_tcp_service(int fd, void *cookie) |
| { |
| char buf[100]; |
| char value[PROPERTY_VALUE_MAX]; |
| int port = (int)cookie; |
| |
| if (port <= 0) { |
| snprintf(buf, sizeof(buf), "invalid port\n"); |
| writex(fd, buf, strlen(buf)); |
| adb_close(fd); |
| return; |
| } |
| |
| snprintf(value, sizeof(value), "%d", port); |
| property_set("service.adb.tcp.port", value); |
| snprintf(buf, sizeof(buf), "restarting in TCP mode port: %d\n", port); |
| writex(fd, buf, strlen(buf)); |
| adb_close(fd); |
| |
| // quit, and init will restart us in TCP mode |
| sleep(1); |
| exit(1); |
| } |
| |
| void restart_usb_service(int fd, void *cookie) |
| { |
| char buf[100]; |
| |
| property_set("service.adb.tcp.port", "0"); |
| snprintf(buf, sizeof(buf), "restarting in USB mode\n"); |
| writex(fd, buf, strlen(buf)); |
| adb_close(fd); |
| |
| // quit, and init will restart us in USB mode |
| sleep(1); |
| exit(1); |
| } |
| |
| void reboot_service(int fd, void *arg) |
| { |
| char buf[100]; |
| int ret; |
| |
| sync(); |
| ret = __reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, |
| LINUX_REBOOT_CMD_RESTART2, (char *)arg); |
| if (ret < 0) { |
| snprintf(buf, sizeof(buf), "reboot failed: %s\n", strerror(errno)); |
| writex(fd, buf, strlen(buf)); |
| } |
| free(arg); |
| adb_close(fd); |
| } |
| |
| #endif |
| |
| #if 0 |
| static void echo_service(int fd, void *cookie) |
| { |
| char buf[4096]; |
| int r; |
| char *p; |
| int c; |
| |
| for(;;) { |
| r = read(fd, buf, 4096); |
| if(r == 0) goto done; |
| if(r < 0) { |
| if(errno == EINTR) continue; |
| else goto done; |
| } |
| |
| c = r; |
| p = buf; |
| while(c > 0) { |
| r = write(fd, p, c); |
| if(r > 0) { |
| c -= r; |
| p += r; |
| continue; |
| } |
| if((r < 0) && (errno == EINTR)) continue; |
| goto done; |
| } |
| } |
| done: |
| close(fd); |
| } |
| #endif |
| |
| static int create_service_thread(void (*func)(int, void *), void *cookie) |
| { |
| stinfo *sti; |
| adb_thread_t t; |
| int s[2]; |
| |
| if(adb_socketpair(s)) { |
| printf("cannot create service socket pair\n"); |
| return -1; |
| } |
| |
| sti = malloc(sizeof(stinfo)); |
| if(sti == 0) fatal("cannot allocate stinfo"); |
| sti->func = func; |
| sti->cookie = cookie; |
| sti->fd = s[1]; |
| |
| if(adb_thread_create( &t, service_bootstrap_func, sti)){ |
| free(sti); |
| adb_close(s[0]); |
| adb_close(s[1]); |
| printf("cannot create service thread\n"); |
| return -1; |
| } |
| |
| D("service thread started, %d:%d\n",s[0], s[1]); |
| return s[0]; |
| } |
| |
| static int create_subprocess(const char *cmd, const char *arg0, const char *arg1) |
| { |
| #ifdef HAVE_WIN32_PROC |
| fprintf(stderr, "error: create_subprocess not implemented on Win32 (%s %s %s)\n", cmd, arg0, arg1); |
| return -1; |
| #else /* !HAVE_WIN32_PROC */ |
| char *devname; |
| int ptm; |
| pid_t pid; |
| |
| ptm = unix_open("/dev/ptmx", O_RDWR); // | O_NOCTTY); |
| if(ptm < 0){ |
| printf("[ cannot open /dev/ptmx - %s ]\n",strerror(errno)); |
| return -1; |
| } |
| fcntl(ptm, F_SETFD, FD_CLOEXEC); |
| |
| if(grantpt(ptm) || unlockpt(ptm) || |
| ((devname = (char*) ptsname(ptm)) == 0)){ |
| printf("[ trouble with /dev/ptmx - %s ]\n", strerror(errno)); |
| return -1; |
| } |
| |
| pid = fork(); |
| if(pid < 0) { |
| printf("- fork failed: %s -\n", strerror(errno)); |
| return -1; |
| } |
| |
| if(pid == 0){ |
| int pts; |
| |
| setsid(); |
| |
| pts = unix_open(devname, O_RDWR); |
| if(pts < 0) exit(-1); |
| |
| dup2(pts, 0); |
| dup2(pts, 1); |
| dup2(pts, 2); |
| |
| adb_close(ptm); |
| |
| execl(cmd, cmd, arg0, arg1, NULL); |
| fprintf(stderr, "- exec '%s' failed: %s (%d) -\n", |
| cmd, strerror(errno), errno); |
| exit(-1); |
| } else { |
| #if !ADB_HOST |
| // set child's OOM adjustment to zero |
| char text[64]; |
| snprintf(text, sizeof text, "/proc/%d/oom_adj", pid); |
| int fd = adb_open(text, O_WRONLY); |
| if (fd >= 0) { |
| adb_write(fd, "0", 1); |
| adb_close(fd); |
| } else { |
| D("adb: unable to open %s\n", text); |
| } |
| #endif |
| return ptm; |
| } |
| #endif /* !HAVE_WIN32_PROC */ |
| } |
| |
| #if ADB_HOST |
| #define SHELL_COMMAND "/bin/sh" |
| #else |
| #define SHELL_COMMAND "/system/bin/sh" |
| #endif |
| |
| int service_to_fd(const char *name) |
| { |
| int ret = -1; |
| |
| if(!strncmp(name, "tcp:", 4)) { |
| int port = atoi(name + 4); |
| name = strchr(name + 4, ':'); |
| if(name == 0) { |
| ret = socket_loopback_client(port, SOCK_STREAM); |
| if (ret >= 0) |
| disable_tcp_nagle(ret); |
| } else { |
| #if ADB_HOST |
| adb_mutex_lock(&dns_lock); |
| ret = socket_network_client(name + 1, port, SOCK_STREAM); |
| adb_mutex_unlock(&dns_lock); |
| #else |
| return -1; |
| #endif |
| } |
| #ifndef HAVE_WINSOCK /* winsock doesn't implement unix domain sockets */ |
| } else if(!strncmp(name, "local:", 6)) { |
| ret = socket_local_client(name + 6, |
| ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM); |
| } else if(!strncmp(name, "localreserved:", 14)) { |
| ret = socket_local_client(name + 14, |
| ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM); |
| } else if(!strncmp(name, "localabstract:", 14)) { |
| ret = socket_local_client(name + 14, |
| ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); |
| } else if(!strncmp(name, "localfilesystem:", 16)) { |
| ret = socket_local_client(name + 16, |
| ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM); |
| #endif |
| #if ADB_HOST |
| } else if(!strncmp("dns:", name, 4)){ |
| char *n = strdup(name + 4); |
| if(n == 0) return -1; |
| ret = create_service_thread(dns_service, n); |
| #else /* !ADB_HOST */ |
| } else if(!strncmp("dev:", name, 4)) { |
| ret = unix_open(name + 4, O_RDWR); |
| } else if(!strncmp(name, "framebuffer:", 12)) { |
| ret = create_service_thread(framebuffer_service, 0); |
| } else if(recovery_mode && !strncmp(name, "recover:", 8)) { |
| ret = create_service_thread(recover_service, (void*) atoi(name + 8)); |
| } else if (!strncmp(name, "jdwp:", 5)) { |
| ret = create_jdwp_connection_fd(atoi(name+5)); |
| } else if (!strncmp(name, "log:", 4)) { |
| ret = create_service_thread(log_service, get_log_file_path(name + 4)); |
| #endif |
| } else if(!HOST && !strncmp(name, "shell:", 6)) { |
| if(name[6]) { |
| ret = create_subprocess(SHELL_COMMAND, "-c", name + 6); |
| } else { |
| ret = create_subprocess(SHELL_COMMAND, "-", 0); |
| } |
| #if !ADB_HOST |
| } else if(!strncmp(name, "sync:", 5)) { |
| ret = create_service_thread(file_sync_service, NULL); |
| } else if(!strncmp(name, "remount:", 8)) { |
| ret = create_service_thread(remount_service, NULL); |
| } else if(!strncmp(name, "reboot:", 7)) { |
| void* arg = strdup(name + 7); |
| if(arg == 0) return -1; |
| ret = create_service_thread(reboot_service, arg); |
| } else if(!strncmp(name, "root:", 5)) { |
| ret = create_service_thread(restart_root_service, NULL); |
| } else if(!strncmp(name, "tcpip:", 6)) { |
| int port; |
| if (sscanf(name + 6, "%d", &port) == 0) { |
| port = 0; |
| } |
| ret = create_service_thread(restart_tcp_service, (void *)port); |
| } else if(!strncmp(name, "usb:", 4)) { |
| ret = create_service_thread(restart_usb_service, NULL); |
| #endif |
| #if 0 |
| } else if(!strncmp(name, "echo:", 5)){ |
| ret = create_service_thread(echo_service, 0); |
| #endif |
| } |
| if (ret >= 0) { |
| close_on_exec(ret); |
| } |
| return ret; |
| } |
| |
| #if ADB_HOST |
| struct state_info { |
| transport_type transport; |
| char* serial; |
| int state; |
| }; |
| |
| static void wait_for_state(int fd, void* cookie) |
| { |
| struct state_info* sinfo = cookie; |
| char* err = "unknown error"; |
| |
| D("wait_for_state %d\n", sinfo->state); |
| |
| atransport *t = acquire_one_transport(sinfo->state, sinfo->transport, sinfo->serial, &err); |
| if(t != 0) { |
| writex(fd, "OKAY", 4); |
| } else { |
| sendfailmsg(fd, err); |
| } |
| |
| if (sinfo->serial) |
| free(sinfo->serial); |
| free(sinfo); |
| adb_close(fd); |
| D("wait_for_state is done\n"); |
| } |
| #endif |
| |
| #if ADB_HOST |
| asocket* host_service_to_socket(const char* name, const char *serial) |
| { |
| if (!strcmp(name,"track-devices")) { |
| return create_device_tracker(); |
| } else if (!strncmp(name, "wait-for-", strlen("wait-for-"))) { |
| struct state_info* sinfo = malloc(sizeof(struct state_info)); |
| |
| if (serial) |
| sinfo->serial = strdup(serial); |
| else |
| sinfo->serial = NULL; |
| |
| name += strlen("wait-for-"); |
| |
| if (!strncmp(name, "local", strlen("local"))) { |
| sinfo->transport = kTransportLocal; |
| sinfo->state = CS_DEVICE; |
| } else if (!strncmp(name, "usb", strlen("usb"))) { |
| sinfo->transport = kTransportUsb; |
| sinfo->state = CS_DEVICE; |
| } else if (!strncmp(name, "any", strlen("any"))) { |
| sinfo->transport = kTransportAny; |
| sinfo->state = CS_DEVICE; |
| } else { |
| free(sinfo); |
| return NULL; |
| } |
| |
| int fd = create_service_thread(wait_for_state, sinfo); |
| return create_local_socket(fd); |
| } |
| return NULL; |
| } |
| #endif /* ADB_HOST */ |