558 lines
15 KiB
C
558 lines
15 KiB
C
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include "sysdeps.h"
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#define TRACE_TAG TRACE_SERVICES
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#include "adb.h"
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#include "file_sync_service.h"
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#if ADB_HOST
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# ifndef HAVE_WINSOCK
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# include <netinet/in.h>
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# include <netdb.h>
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# include <sys/ioctl.h>
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# endif
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#else
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# include <cutils/android_reboot.h>
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#endif
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typedef struct stinfo stinfo;
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struct stinfo {
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void (*func)(int fd, void *cookie);
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int fd;
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void *cookie;
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};
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void *service_bootstrap_func(void *x)
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{
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stinfo *sti = x;
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sti->func(sti->fd, sti->cookie);
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free(sti);
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return 0;
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}
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#if ADB_HOST
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ADB_MUTEX_DEFINE( dns_lock );
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static void dns_service(int fd, void *cookie)
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{
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char *hostname = cookie;
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struct hostent *hp;
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unsigned zero = 0;
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adb_mutex_lock(&dns_lock);
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hp = gethostbyname(hostname);
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free(cookie);
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if(hp == 0) {
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writex(fd, &zero, 4);
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} else {
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writex(fd, hp->h_addr, 4);
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}
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adb_mutex_unlock(&dns_lock);
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adb_close(fd);
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}
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#else
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extern int recovery_mode;
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static void recover_service(int s, void *cookie)
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{
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unsigned char buf[4096];
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unsigned count = (unsigned) cookie;
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int fd;
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fd = adb_creat("/tmp/update", 0644);
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if(fd < 0) {
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adb_close(s);
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return;
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}
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while(count > 0) {
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unsigned xfer = (count > 4096) ? 4096 : count;
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if(readx(s, buf, xfer)) break;
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if(writex(fd, buf, xfer)) break;
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count -= xfer;
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}
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if(count == 0) {
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writex(s, "OKAY", 4);
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} else {
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writex(s, "FAIL", 4);
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}
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adb_close(fd);
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adb_close(s);
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fd = adb_creat("/tmp/update.begin", 0644);
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adb_close(fd);
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}
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void restart_root_service(int fd, void *cookie)
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{
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char buf[100];
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char value[PROPERTY_VALUE_MAX];
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if (getuid() == 0) {
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snprintf(buf, sizeof(buf), "adbd is already running as root\n");
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writex(fd, buf, strlen(buf));
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adb_close(fd);
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} else {
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property_get("ro.debuggable", value, "");
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if (strcmp(value, "1") != 0) {
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snprintf(buf, sizeof(buf), "adbd cannot run as root in production builds\n");
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writex(fd, buf, strlen(buf));
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adb_close(fd);
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return;
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}
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property_set("service.adb.root", "1");
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snprintf(buf, sizeof(buf), "restarting adbd as root\n");
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writex(fd, buf, strlen(buf));
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adb_close(fd);
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}
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}
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void restart_tcp_service(int fd, void *cookie)
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{
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char buf[100];
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char value[PROPERTY_VALUE_MAX];
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int port = (int)cookie;
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if (port <= 0) {
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snprintf(buf, sizeof(buf), "invalid port\n");
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writex(fd, buf, strlen(buf));
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adb_close(fd);
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return;
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}
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snprintf(value, sizeof(value), "%d", port);
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property_set("service.adb.tcp.port", value);
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snprintf(buf, sizeof(buf), "restarting in TCP mode port: %d\n", port);
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writex(fd, buf, strlen(buf));
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adb_close(fd);
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}
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void restart_usb_service(int fd, void *cookie)
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{
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char buf[100];
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property_set("service.adb.tcp.port", "0");
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snprintf(buf, sizeof(buf), "restarting in USB mode\n");
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writex(fd, buf, strlen(buf));
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adb_close(fd);
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}
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void reboot_service(int fd, void *arg)
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{
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char buf[100];
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int pid, ret;
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sync();
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/* Attempt to unmount the SD card first.
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* No need to bother checking for errors.
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*/
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pid = fork();
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if (pid == 0) {
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/* ask vdc to unmount it */
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execl("/system/bin/vdc", "/system/bin/vdc", "volume", "unmount",
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getenv("EXTERNAL_STORAGE"), "force", NULL);
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} else if (pid > 0) {
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/* wait until vdc succeeds or fails */
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waitpid(pid, &ret, 0);
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}
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ret = android_reboot(ANDROID_RB_RESTART2, 0, (char *) arg);
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if (ret < 0) {
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snprintf(buf, sizeof(buf), "reboot failed: %s\n", strerror(errno));
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writex(fd, buf, strlen(buf));
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}
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free(arg);
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adb_close(fd);
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}
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#endif
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#if 0
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static void echo_service(int fd, void *cookie)
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{
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char buf[4096];
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int r;
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char *p;
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int c;
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for(;;) {
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r = adb_read(fd, buf, 4096);
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if(r == 0) goto done;
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if(r < 0) {
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if(errno == EINTR) continue;
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else goto done;
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}
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c = r;
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p = buf;
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while(c > 0) {
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r = write(fd, p, c);
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if(r > 0) {
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c -= r;
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p += r;
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continue;
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}
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if((r < 0) && (errno == EINTR)) continue;
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goto done;
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}
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}
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done:
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close(fd);
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}
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#endif
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static int create_service_thread(void (*func)(int, void *), void *cookie)
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{
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stinfo *sti;
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adb_thread_t t;
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int s[2];
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if(adb_socketpair(s)) {
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printf("cannot create service socket pair\n");
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return -1;
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}
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sti = malloc(sizeof(stinfo));
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if(sti == 0) fatal("cannot allocate stinfo");
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sti->func = func;
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sti->cookie = cookie;
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sti->fd = s[1];
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if(adb_thread_create( &t, service_bootstrap_func, sti)){
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free(sti);
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adb_close(s[0]);
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adb_close(s[1]);
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printf("cannot create service thread\n");
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return -1;
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}
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D("service thread started, %d:%d\n",s[0], s[1]);
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return s[0];
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}
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#if !ADB_HOST
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static int create_subprocess(const char *cmd, const char *arg0, const char *arg1, pid_t *pid)
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{
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#ifdef HAVE_WIN32_PROC
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D("create_subprocess(cmd=%s, arg0=%s, arg1=%s)\n", cmd, arg0, arg1);
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fprintf(stderr, "error: create_subprocess not implemented on Win32 (%s %s %s)\n", cmd, arg0, arg1);
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return -1;
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#else /* !HAVE_WIN32_PROC */
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char *devname;
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int ptm;
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ptm = unix_open("/dev/ptmx", O_RDWR); // | O_NOCTTY);
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if(ptm < 0){
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printf("[ cannot open /dev/ptmx - %s ]\n",strerror(errno));
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return -1;
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}
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fcntl(ptm, F_SETFD, FD_CLOEXEC);
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if(grantpt(ptm) || unlockpt(ptm) ||
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((devname = (char*) ptsname(ptm)) == 0)){
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printf("[ trouble with /dev/ptmx - %s ]\n", strerror(errno));
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adb_close(ptm);
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return -1;
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}
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*pid = fork();
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if(*pid < 0) {
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printf("- fork failed: %s -\n", strerror(errno));
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adb_close(ptm);
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return -1;
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}
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if(*pid == 0){
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int pts;
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setsid();
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pts = unix_open(devname, O_RDWR);
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if(pts < 0) {
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fprintf(stderr, "child failed to open pseudo-term slave: %s\n", devname);
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exit(-1);
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}
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dup2(pts, 0);
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dup2(pts, 1);
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dup2(pts, 2);
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adb_close(pts);
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adb_close(ptm);
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// set OOM adjustment to zero
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char text[64];
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snprintf(text, sizeof text, "/proc/%d/oom_adj", getpid());
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int fd = adb_open(text, O_WRONLY);
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if (fd >= 0) {
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adb_write(fd, "0", 1);
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adb_close(fd);
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} else {
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D("adb: unable to open %s\n", text);
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}
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execl(cmd, cmd, arg0, arg1, NULL);
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fprintf(stderr, "- exec '%s' failed: %s (%d) -\n",
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cmd, strerror(errno), errno);
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exit(-1);
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} else {
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// Don't set child's OOM adjustment to zero.
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// Let the child do it itself, as sometimes the parent starts
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// running before the child has a /proc/pid/oom_adj.
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// """adb: unable to open /proc/644/oom_adj""" seen in some logs.
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return ptm;
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}
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#endif /* !HAVE_WIN32_PROC */
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}
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#endif /* !ABD_HOST */
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#if ADB_HOST
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#define SHELL_COMMAND "/bin/sh"
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#else
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#define SHELL_COMMAND "/system/bin/sh"
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#endif
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#if !ADB_HOST
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static void subproc_waiter_service(int fd, void *cookie)
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{
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pid_t pid = (pid_t)cookie;
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D("entered. fd=%d of pid=%d\n", fd, pid);
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for (;;) {
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int status;
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pid_t p = waitpid(pid, &status, 0);
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if (p == pid) {
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D("fd=%d, post waitpid(pid=%d) status=%04x\n", fd, p, status);
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if (WIFSIGNALED(status)) {
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D("*** Killed by signal %d\n", WTERMSIG(status));
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break;
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} else if (!WIFEXITED(status)) {
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D("*** Didn't exit!!. status %d\n", status);
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break;
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} else if (WEXITSTATUS(status) >= 0) {
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D("*** Exit code %d\n", WEXITSTATUS(status));
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break;
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}
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}
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}
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D("shell exited fd=%d of pid=%d err=%d\n", fd, pid, errno);
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if (SHELL_EXIT_NOTIFY_FD >=0) {
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int res;
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res = writex(SHELL_EXIT_NOTIFY_FD, &fd, sizeof(fd));
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D("notified shell exit via fd=%d for pid=%d res=%d errno=%d\n",
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SHELL_EXIT_NOTIFY_FD, pid, res, errno);
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}
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}
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static int create_subproc_thread(const char *name)
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{
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stinfo *sti;
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adb_thread_t t;
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int ret_fd;
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pid_t pid;
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if(name) {
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ret_fd = create_subprocess(SHELL_COMMAND, "-c", name, &pid);
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} else {
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ret_fd = create_subprocess(SHELL_COMMAND, "-", 0, &pid);
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}
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D("create_subprocess() ret_fd=%d pid=%d\n", ret_fd, pid);
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sti = malloc(sizeof(stinfo));
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if(sti == 0) fatal("cannot allocate stinfo");
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sti->func = subproc_waiter_service;
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sti->cookie = (void*)pid;
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sti->fd = ret_fd;
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if(adb_thread_create( &t, service_bootstrap_func, sti)){
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free(sti);
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adb_close(ret_fd);
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printf("cannot create service thread\n");
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return -1;
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}
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D("service thread started, fd=%d pid=%d\n",ret_fd, pid);
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return ret_fd;
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}
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#endif
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int service_to_fd(const char *name)
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{
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int ret = -1;
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if(!strncmp(name, "tcp:", 4)) {
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int port = atoi(name + 4);
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name = strchr(name + 4, ':');
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if(name == 0) {
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ret = socket_loopback_client(port, SOCK_STREAM);
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if (ret >= 0)
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disable_tcp_nagle(ret);
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} else {
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#if ADB_HOST
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adb_mutex_lock(&dns_lock);
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ret = socket_network_client(name + 1, port, SOCK_STREAM);
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adb_mutex_unlock(&dns_lock);
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#else
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return -1;
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#endif
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}
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#ifndef HAVE_WINSOCK /* winsock doesn't implement unix domain sockets */
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} else if(!strncmp(name, "local:", 6)) {
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ret = socket_local_client(name + 6,
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ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM);
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} else if(!strncmp(name, "localreserved:", 14)) {
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ret = socket_local_client(name + 14,
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ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM);
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} else if(!strncmp(name, "localabstract:", 14)) {
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ret = socket_local_client(name + 14,
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ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
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} else if(!strncmp(name, "localfilesystem:", 16)) {
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ret = socket_local_client(name + 16,
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ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM);
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#endif
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#if ADB_HOST
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} else if(!strncmp("dns:", name, 4)){
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char *n = strdup(name + 4);
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if(n == 0) return -1;
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ret = create_service_thread(dns_service, n);
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#else /* !ADB_HOST */
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} else if(!strncmp("dev:", name, 4)) {
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ret = unix_open(name + 4, O_RDWR);
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} else if(!strncmp(name, "framebuffer:", 12)) {
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ret = create_service_thread(framebuffer_service, 0);
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} else if(recovery_mode && !strncmp(name, "recover:", 8)) {
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ret = create_service_thread(recover_service, (void*) atoi(name + 8));
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} else if (!strncmp(name, "jdwp:", 5)) {
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ret = create_jdwp_connection_fd(atoi(name+5));
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} else if (!strncmp(name, "log:", 4)) {
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ret = create_service_thread(log_service, get_log_file_path(name + 4));
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} else if(!HOST && !strncmp(name, "shell:", 6)) {
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if(name[6]) {
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ret = create_subproc_thread(name + 6);
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} else {
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ret = create_subproc_thread(0);
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}
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} else if(!strncmp(name, "sync:", 5)) {
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ret = create_service_thread(file_sync_service, NULL);
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} else if(!strncmp(name, "remount:", 8)) {
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ret = create_service_thread(remount_service, NULL);
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} else if(!strncmp(name, "reboot:", 7)) {
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void* arg = strdup(name + 7);
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if(arg == 0) return -1;
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ret = create_service_thread(reboot_service, arg);
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} else if(!strncmp(name, "root:", 5)) {
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ret = create_service_thread(restart_root_service, NULL);
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} else if(!strncmp(name, "backup:", 7)) {
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char* arg = strdup(name+7);
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if (arg == NULL) return -1;
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ret = backup_service(BACKUP, arg);
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} else if(!strncmp(name, "restore:", 8)) {
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ret = backup_service(RESTORE, NULL);
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} else if(!strncmp(name, "tcpip:", 6)) {
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int port;
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if (sscanf(name + 6, "%d", &port) == 0) {
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port = 0;
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}
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ret = create_service_thread(restart_tcp_service, (void *)port);
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} else if(!strncmp(name, "usb:", 4)) {
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ret = create_service_thread(restart_usb_service, NULL);
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#endif
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#if 0
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} else if(!strncmp(name, "echo:", 5)){
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ret = create_service_thread(echo_service, 0);
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#endif
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}
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if (ret >= 0) {
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close_on_exec(ret);
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}
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return ret;
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}
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#if ADB_HOST
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struct state_info {
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transport_type transport;
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char* serial;
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int state;
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};
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static void wait_for_state(int fd, void* cookie)
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{
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struct state_info* sinfo = cookie;
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char* err = "unknown error";
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D("wait_for_state %d\n", sinfo->state);
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atransport *t = acquire_one_transport(sinfo->state, sinfo->transport, sinfo->serial, &err);
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if(t != 0) {
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writex(fd, "OKAY", 4);
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} else {
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sendfailmsg(fd, err);
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}
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if (sinfo->serial)
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free(sinfo->serial);
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free(sinfo);
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adb_close(fd);
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|
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 */
|