scrcpy/app/src/adb.c

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#include "adb.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "adb_parser.h"
#include "util/file.h"
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#include "util/log.h"
#include "util/process_intr.h"
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#include "util/str.h"
static const char *adb_command;
static inline const char *
get_adb_command(void) {
if (!adb_command) {
adb_command = getenv("ADB");
if (!adb_command)
adb_command = "adb";
}
return adb_command;
}
// serialize argv to string "[arg1], [arg2], [arg3]"
static size_t
argv_to_string(const char *const *argv, char *buf, size_t bufsize) {
size_t idx = 0;
bool first = true;
while (*argv) {
const char *arg = *argv;
size_t len = strlen(arg);
// count space for "[], ...\0"
if (idx + len + 8 >= bufsize) {
// not enough space, truncate
assert(idx < bufsize - 4);
memcpy(&buf[idx], "...", 3);
idx += 3;
break;
}
if (first) {
first = false;
} else {
buf[idx++] = ',';
buf[idx++] = ' ';
}
buf[idx++] = '[';
memcpy(&buf[idx], arg, len);
idx += len;
buf[idx++] = ']';
argv++;
}
assert(idx < bufsize);
buf[idx] = '\0';
return idx;
}
static void
show_adb_installation_msg() {
#ifndef __WINDOWS__
static const struct {
const char *binary;
const char *command;
} pkg_managers[] = {
{"apt", "apt install adb"},
{"apt-get", "apt-get install adb"},
{"brew", "brew cask install android-platform-tools"},
{"dnf", "dnf install android-tools"},
{"emerge", "emerge dev-util/android-tools"},
{"pacman", "pacman -S android-tools"},
};
for (size_t i = 0; i < ARRAY_LEN(pkg_managers); ++i) {
if (sc_file_executable_exists(pkg_managers[i].binary)) {
LOGI("You may install 'adb' by \"%s\"", pkg_managers[i].command);
return;
}
}
#endif
LOGI("You may download and install 'adb' from "
"https://developer.android.com/studio/releases/platform-tools");
}
static void
show_adb_err_msg(enum sc_process_result err, const char *const argv[]) {
#define MAX_COMMAND_STRING_LEN 1024
char *buf = malloc(MAX_COMMAND_STRING_LEN);
if (!buf) {
LOG_OOM();
LOGE("Failed to execute");
return;
}
switch (err) {
case SC_PROCESS_ERROR_GENERIC:
argv_to_string(argv, buf, MAX_COMMAND_STRING_LEN);
LOGE("Failed to execute: %s", buf);
break;
case SC_PROCESS_ERROR_MISSING_BINARY:
argv_to_string(argv, buf, MAX_COMMAND_STRING_LEN);
LOGE("Command not found: %s", buf);
LOGE("(make 'adb' accessible from your PATH or define its full"
"path in the ADB environment variable)");
show_adb_installation_msg();
break;
case SC_PROCESS_SUCCESS:
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// do nothing
break;
}
free(buf);
}
static bool
process_check_success_internal(sc_pid pid, const char *name, bool close,
unsigned flags) {
bool log_errors = !(flags & SC_ADB_NO_LOGERR);
if (pid == SC_PROCESS_NONE) {
if (log_errors) {
LOGE("Could not execute \"%s\"", name);
}
return false;
}
sc_exit_code exit_code = sc_process_wait(pid, close);
if (exit_code) {
if (log_errors) {
if (exit_code != SC_EXIT_CODE_NONE) {
LOGE("\"%s\" returned with value %" SC_PRIexitcode, name,
exit_code);
} else {
LOGE("\"%s\" exited unexpectedly", name);
}
}
return false;
}
return true;
}
static bool
process_check_success_intr(struct sc_intr *intr, sc_pid pid, const char *name,
unsigned flags) {
if (!sc_intr_set_process(intr, pid)) {
// Already interrupted
return false;
}
// Always pass close=false, interrupting would be racy otherwise
bool ret = process_check_success_internal(pid, name, false, flags);
sc_intr_set_process(intr, SC_PROCESS_NONE);
// Close separately
sc_process_close(pid);
return ret;
}
static const char **
adb_create_argv(const char *serial, const char *const adb_cmd[], size_t len) {
const char **argv = malloc((len + 4) * sizeof(*argv));
if (!argv) {
LOG_OOM();
return NULL;
}
argv[0] = get_adb_command();
int i;
if (serial) {
argv[1] = "-s";
argv[2] = serial;
i = 3;
} else {
i = 1;
}
memcpy(&argv[i], adb_cmd, len * sizeof(const char *));
argv[len + i] = NULL;
return argv;
}
static sc_pid
adb_execute_p(const char *serial, const char *const adb_cmd[], size_t len,
unsigned flags, sc_pipe *pout) {
const char **argv = adb_create_argv(serial, adb_cmd, len);
if (!argv) {
return SC_PROCESS_NONE;
}
unsigned process_flags = 0;
if (flags & SC_ADB_NO_STDOUT) {
process_flags |= SC_PROCESS_NO_STDOUT;
}
if (flags & SC_ADB_NO_STDERR) {
process_flags |= SC_PROCESS_NO_STDERR;
}
sc_pid pid;
enum sc_process_result r =
sc_process_execute_p(argv, &pid, process_flags, NULL, pout, NULL);
if (r != SC_PROCESS_SUCCESS) {
// If the execution itself failed (not the command exit code), log the
// error in all cases
show_adb_err_msg(r, argv);
pid = SC_PROCESS_NONE;
}
free(argv);
return pid;
}
sc_pid
adb_execute(const char *serial, const char *const adb_cmd[], size_t len,
unsigned flags) {
return adb_execute_p(serial, adb_cmd, len, flags, NULL);
}
bool
adb_forward(struct sc_intr *intr, const char *serial, uint16_t local_port,
const char *device_socket_name, unsigned flags) {
char local[4 + 5 + 1]; // tcp:PORT
char remote[108 + 14 + 1]; // localabstract:NAME
sprintf(local, "tcp:%" PRIu16, local_port);
snprintf(remote, sizeof(remote), "localabstract:%s", device_socket_name);
const char *const adb_cmd[] = {"forward", local, remote};
sc_pid pid = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd), flags);
return process_check_success_intr(intr, pid, "adb forward", flags);
}
bool
adb_forward_remove(struct sc_intr *intr, const char *serial,
uint16_t local_port, unsigned flags) {
char local[4 + 5 + 1]; // tcp:PORT
sprintf(local, "tcp:%" PRIu16, local_port);
const char *const adb_cmd[] = {"forward", "--remove", local};
sc_pid pid = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd), flags);
return process_check_success_intr(intr, pid, "adb forward --remove", flags);
}
bool
adb_reverse(struct sc_intr *intr, const char *serial,
const char *device_socket_name, uint16_t local_port,
unsigned flags) {
char local[4 + 5 + 1]; // tcp:PORT
char remote[108 + 14 + 1]; // localabstract:NAME
sprintf(local, "tcp:%" PRIu16, local_port);
snprintf(remote, sizeof(remote), "localabstract:%s", device_socket_name);
const char *const adb_cmd[] = {"reverse", remote, local};
sc_pid pid = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd), flags);
return process_check_success_intr(intr, pid, "adb reverse", flags);
}
bool
adb_reverse_remove(struct sc_intr *intr, const char *serial,
const char *device_socket_name, unsigned flags) {
char remote[108 + 14 + 1]; // localabstract:NAME
snprintf(remote, sizeof(remote), "localabstract:%s", device_socket_name);
const char *const adb_cmd[] = {"reverse", "--remove", remote};
sc_pid pid = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd), flags);
return process_check_success_intr(intr, pid, "adb reverse --remove", flags);
}
bool
adb_push(struct sc_intr *intr, const char *serial, const char *local,
const char *remote, unsigned flags) {
#ifdef __WINDOWS__
// Windows will parse the string, so the paths must be quoted
// (see sys/win/command.c)
local = sc_str_quote(local);
if (!local) {
return SC_PROCESS_NONE;
}
remote = sc_str_quote(remote);
if (!remote) {
free((void *) local);
return SC_PROCESS_NONE;
}
#endif
const char *const adb_cmd[] = {"push", local, remote};
sc_pid pid = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd), flags);
#ifdef __WINDOWS__
free((void *) remote);
free((void *) local);
#endif
return process_check_success_intr(intr, pid, "adb push", flags);
}
bool
adb_install(struct sc_intr *intr, const char *serial, const char *local,
unsigned flags) {
#ifdef __WINDOWS__
// Windows will parse the string, so the local name must be quoted
// (see sys/win/command.c)
local = sc_str_quote(local);
if (!local) {
return SC_PROCESS_NONE;
}
#endif
const char *const adb_cmd[] = {"install", "-r", local};
sc_pid pid = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd), flags);
#ifdef __WINDOWS__
free((void *) local);
#endif
return process_check_success_intr(intr, pid, "adb install", flags);
}
bool
adb_tcpip(struct sc_intr *intr, const char *serial, uint16_t port,
unsigned flags) {
char port_string[5 + 1];
sprintf(port_string, "%" PRIu16, port);
const char *const adb_cmd[] = {"tcpip", port_string};
sc_pid pid = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd), flags);
return process_check_success_intr(intr, pid, "adb tcpip", flags);
}
bool
adb_connect(struct sc_intr *intr, const char *ip_port, unsigned flags) {
const char *const adb_cmd[] = {"connect", ip_port};
sc_pipe pout;
sc_pid pid = adb_execute_p(NULL, adb_cmd, ARRAY_LEN(adb_cmd), flags, &pout);
if (pid == SC_PROCESS_NONE) {
LOGE("Could not execute \"adb connect\"");
return false;
}
// "adb connect" always returns successfully (with exit code 0), even in
// case of failure. As a workaround, check if its output starts with
// "connected".
char buf[128];
ssize_t r = sc_pipe_read_all_intr(intr, pid, pout, buf, sizeof(buf));
sc_pipe_close(pout);
bool ok = process_check_success_intr(intr, pid, "adb connect", flags);
if (!ok) {
return false;
}
if (r == -1) {
return false;
}
ok = !strncmp("connected", buf, sizeof("connected") - 1);
if (!ok && !(flags & SC_ADB_NO_STDERR)) {
// "adb connect" also prints errors to stdout. Since we capture it,
// re-print the error to stderr.
sc_str_truncate(buf, r, "\r\n");
fprintf(stderr, "%s\n", buf);
}
return ok;
}
bool
adb_disconnect(struct sc_intr *intr, const char *ip_port, unsigned flags) {
const char *const adb_cmd[] = {"disconnect", ip_port};
size_t len = ip_port ? ARRAY_LEN(adb_cmd)
: ARRAY_LEN(adb_cmd) - 1;
sc_pid pid = adb_execute(NULL, adb_cmd, len, flags);
return process_check_success_intr(intr, pid, "adb disconnect", flags);
}
char *
adb_get_serialno(struct sc_intr *intr, unsigned flags) {
const char *const adb_cmd[] = {"get-serialno"};
sc_pipe pout;
sc_pid pid = adb_execute_p(NULL, adb_cmd, ARRAY_LEN(adb_cmd), flags, &pout);
if (pid == SC_PROCESS_NONE) {
LOGE("Could not execute \"adb get-serialno\"");
return NULL;
}
char buf[128];
ssize_t r = sc_pipe_read_all_intr(intr, pid, pout, buf, sizeof(buf));
sc_pipe_close(pout);
bool ok = process_check_success_intr(intr, pid, "adb get-serialno", flags);
if (!ok) {
return NULL;
}
if (r == -1) {
return false;
}
sc_str_truncate(buf, r, " \r\n");
return strdup(buf);
}
char *
adb_get_device_ip(struct sc_intr *intr, const char *serial, unsigned flags) {
const char *const cmd[] = {"shell", "ip", "route"};
sc_pipe pout;
sc_pid pid = adb_execute_p(serial, cmd, ARRAY_LEN(cmd), flags, &pout);
if (pid == SC_PROCESS_NONE) {
LOGD("Could not execute \"ip route\"");
return NULL;
}
// "adb shell ip route" output should contain only a few lines
char buf[1024];
ssize_t r = sc_pipe_read_all_intr(intr, pid, pout, buf, sizeof(buf));
sc_pipe_close(pout);
bool ok = process_check_success_intr(intr, pid, "ip route", flags);
if (!ok) {
return NULL;
}
if (r == -1) {
return false;
}
assert((size_t) r <= sizeof(buf));
if (r == sizeof(buf) && buf[sizeof(buf) - 1] != '\0') {
// The implementation assumes that the output of "ip route" fits in the
// buffer in a single pass
LOGW("Result of \"ip route\" does not fit in 1Kb. "
"Please report an issue.\n");
return NULL;
}
return sc_adb_parse_device_ip_from_output(buf, r);
}