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最新推荐文章于 2025-04-11 15:38:29 发布

转载最新推荐文章于 2025-04-11 15:38:29 发布 · 364 阅读

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#Android ndc命令没有

本文介绍了一个用于与Netd服务进行交互的C/C++客户端程序。该程序通过本地socket连接到Netd服务，并支持发送命令及监控模式。文章详细展示了程序的实现细节，包括命令行参数处理、命令构造及发送、响应接收等。

* 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 #include #include #include #include #include #include #include #include #include #include #include #include #include static void usage(char *progname);

static int do_monitor(int sock, int stop_after_cmd);

static int do_cmd(int sock, int argc, char **argv);

int main(int argc, char **argv) {

int sock;

int cmdOffset = 0;

if (argc < 2)

usage(argv[0]);

// try interpreting the first arg as the socket name - if it fails go back to netd

if ((sock = socket_local_client(argv[1],

ANDROID_SOCKET_NAMESPACE_RESERVED,

SOCK_STREAM)) < 0) {

if ((sock = socket_local_client("netd",

ANDROID_SOCKET_NAMESPACE_RESERVED,

SOCK_STREAM)) < 0) {

fprintf(stderr, "Error connecting (%s)\n", strerror(errno));

exit(4);

}

} else {

if (argc < 3) usage(argv[0]);

printf("Using alt socket %s\n", argv[1]);

cmdOffset = 1;

}

if (!strcmp(argv[1+cmdOffset], "monitor"))

exit(do_monitor(sock, 0));

exit(do_cmd(sock, argc-cmdOffset, &(argv[cmdOffset])));

}

static int do_cmd(int sock, int argc, char **argv) {

char *final_cmd = strdup("0 ");

if (final_cmd == NULL) {

perror("strdup");

return errno;

}

int i;

for (i = 1; i < argc; i++) {

if (index(argv[i], '"')) {

perror("argument with embedded quotes not allowed");

free(final_cmd);

return 1;

}

bool needs_quoting = index(argv[i], ' ');

const char *format = needs_quoting ? "%s\"%s\"%s" : "%s%s%s";

char *cmp;

if (asprintf(&cmp, format, final_cmd, argv[i],

(i == (argc -1)) ? "" : " ") < 0) {

perror("malloc");

free(final_cmd);

return errno;

}

free(final_cmd);

final_cmd = cmp;

}

if (write(sock, final_cmd, strlen(final_cmd) + 1) < 0) {

perror("write");

free(final_cmd);

return errno;

}

free(final_cmd);

return do_monitor(sock, 1);

}

static int do_monitor(int sock, int stop_after_cmd) {

char *buffer = malloc(4096);

if (!stop_after_cmd)

printf("[Connected to Netd]\n");

while(1) {

fd_set read_fds;

struct timeval to;

int rc = 0;

to.tv_sec = 10;

to.tv_usec = 0;

FD_ZERO(&read_fds);

FD_SET(sock, &read_fds);

if ((rc = select(sock +1, &read_fds, NULL, NULL, &to)) < 0) {

fprintf(stderr, "Error in select (%s)\n", strerror(errno));

free(buffer);

return errno;

} else if (!rc) {

continue;

fprintf(stderr, "[TIMEOUT]\n");

return ETIMEDOUT;

} else if (FD_ISSET(sock, &read_fds)) {

memset(buffer, 0, 4096);

if ((rc = read(sock, buffer, 4096)) <= 0) {

if (rc == 0)

fprintf(stderr, "Lost connection to Netd - did it crash?\n");

else

fprintf(stderr, "Error reading data (%s)\n", strerror(errno));

free(buffer);

if (rc == 0)

return ECONNRESET;

return errno;

}

int offset = 0;

int i = 0;

for (i = 0; i < rc; i++) {

if (buffer[i] == '\0') {

int code;

char tmp[4];

strncpy(tmp, buffer + offset, 3);

tmp[3] = '\0';

code = atoi(tmp);

printf("%s\n", buffer + offset);

if (stop_after_cmd) {

if (code >= 200 && code < 600)

return 0;

}

offset = i + 1;

}

free(buffer);

return 0;

}

static void usage(char *progname) {

fprintf(stderr, "Usage: %s [sockname] |[arg1] [arg2...]\n", progname);

exit(1);

}

C++程序

174行

4.86 KB

* 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

static void usage(char *progname);

static int do_monitor(int sock, int stop_after_cmd);

static int do_cmd(int sock, int argc, char **argv);

int main(int argc, char **argv) {

int sock;

int cmdOffset = 0;

if (argc < 2)

usage(argv[0]);

// try interpreting the first arg as the socket name - if it fails go back to netd

if ((sock = socket_local_client(argv[1],

ANDROID_SOCKET_NAMESPACE_RESERVED,

SOCK_STREAM)) < 0) {

if ((sock = socket_local_client("netd",

ANDROID_SOCKET_NAMESPACE_RESERVED,

SOCK_STREAM)) < 0) {

fprintf(stderr, "Error connecting (%s)\n", strerror(errno));

exit(4);

}

} else {

if (argc < 3) usage(argv[0]);

printf("Using alt socket %s\n", argv[1]);

cmdOffset = 1;

}

if (!strcmp(argv[1+cmdOffset], "monitor"))

exit(do_monitor(sock, 0));

exit(do_cmd(sock, argc-cmdOffset, &(argv[cmdOffset])));

}

static int do_cmd(int sock, int argc, char **argv) {

char *final_cmd = strdup("0 ");

if (final_cmd == NULL) {

perror("strdup");

return errno;

}

int i;

for (i = 1; i < argc; i++) {

if (index(argv[i], '"')) {

perror("argument with embedded quotes not allowed");

free(final_cmd);

return 1;

}

bool needs_quoting = index(argv[i], ' ');

const char *format = needs_quoting ? "%s\"%s\"%s" : "%s%s%s";

char *cmp;

if (asprintf(&cmp, format, final_cmd, argv[i],

(i == (argc -1)) ? "" : " ") < 0) {

perror("malloc");

free(final_cmd);

return errno;

}

free(final_cmd);

final_cmd = cmp;

}

if (write(sock, final_cmd, strlen(final_cmd) + 1) < 0) {

perror("write");

free(final_cmd);

return errno;

}

free(final_cmd);

return do_monitor(sock, 1);

}

static int do_monitor(int sock, int stop_after_cmd) {

char *buffer = malloc(4096);

if (!stop_after_cmd)

printf("[Connected to Netd]\n");

while(1) {

fd_set read_fds;

struct timeval to;

int rc = 0;

to.tv_sec = 10;

to.tv_usec = 0;

FD_ZERO(&read_fds);

FD_SET(sock, &read_fds);

if ((rc = select(sock +1, &read_fds, NULL, NULL, &to)) < 0) {

fprintf(stderr, "Error in select (%s)\n", strerror(errno));

free(buffer);

return errno;

} else if (!rc) {

continue;

fprintf(stderr, "[TIMEOUT]\n");

return ETIMEDOUT;

} else if (FD_ISSET(sock, &read_fds)) {

memset(buffer, 0, 4096);

if ((rc = read(sock, buffer, 4096)) <= 0) {

if (rc == 0)

fprintf(stderr, "Lost connection to Netd - did it crash?\n");

else

fprintf(stderr, "Error reading data (%s)\n", strerror(errno));

free(buffer);

if (rc == 0)

return ECONNRESET;

return errno;

}

int offset = 0;

int i = 0;

for (i = 0; i < rc; i++) {

if (buffer[i] == '\0') {

int code;

char tmp[4];

strncpy(tmp, buffer + offset, 3);

tmp[3] = '\0';

code = atoi(tmp);

printf("%s\n", buffer + offset);

if (stop_after_cmd) {

if (code >= 200 && code < 600)

return 0;

}

offset = i + 1;

}

free(buffer);

return 0;

}

static void usage(char *progname) {

fprintf(stderr, "Usage: %s [sockname] | [arg1] [arg2...]\n", progname);

exit(1);

}