├── .gitignore ├── CMakeLists.txt ├── LICENSE ├── README.md ├── termux-am.cpp ├── termux-am.h.in └── termux-am.sh.in /.gitignore: -------------------------------------------------------------------------------- 1 | CMakeFiles 2 | cmake_install.cmake 3 | CMakeCache.txt 4 | termux-am 5 | Makefile 6 | 7 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /CMakeLists.txt: -------------------------------------------------------------------------------- 1 | cmake_minimum_required(VERSION 3.10) 2 | project(termux-am-socket) 3 | 4 | if (CMAKE_INSTALL_PREFIX STREQUAL "/usr/local") 5 | set(CMAKE_INSTALL_PREFIX $ENV{PREFIX}) 6 | message(STATUS "prefix set from env: " ${CMAKE_INSTALL_PREFIX}) 7 | endif() 8 | 9 | set(TERMUX_PREFIX ${CMAKE_INSTALL_PREFIX}) 10 | 11 | configure_file( 12 | ${CMAKE_CURRENT_SOURCE_DIR}/termux-am.h.in 13 | termux-am.h @ONLY 14 | ) 15 | 16 | configure_file( 17 | ${CMAKE_CURRENT_SOURCE_DIR}/termux-am.sh.in 18 | termux-am @ONLY 19 | ) 20 | 21 | add_executable(termux-am-socket termux-am.cpp) 22 | target_include_directories(termux-am-socket PUBLIC ${CMAKE_BINARY_DIR}) 23 | 24 | 25 | install(FILES ${CMAKE_BINARY_DIR}/termux-am TYPE BIN PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE) 26 | install(TARGETS termux-am-socket DESTINATION bin PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE) 27 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # termux-am-socket 2 | 3 | This is a small program for sending commands to the Termux:API app, 4 | thereby allowing terminal programs to use the Android API. The program 5 | replaces [termuxAm](https://github.com/termux/termuxAm), and uses a 6 | unix socket to transfer information between the app and userspace, 7 | thereby speeding up api commands by almost a factor 10. 8 | 9 | 10 | ## License 11 | 12 | Released under the [GPLv3 license](http://www.gnu.org/licenses/gpl-3.0.en.html). 13 | -------------------------------------------------------------------------------- /termux-am.cpp: -------------------------------------------------------------------------------- 1 | /** 2 | * termux-am sends commands to the Termux:API app through a unix socket 3 | * Copyright (C) 2021 Tarek Sander 4 | * 5 | * This program is free software: you can redistribute it and/or 6 | * modify it under the terms of the GNU General Public License as 7 | * published by the Free Software Foundation, version 3. 8 | * 9 | * This program is distributed in the hope that it will be useful, 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 | * GNU General Public License for more details. 13 | * 14 | * You should have received a copy of the GNU General Public License 15 | * along with this program. If not, see . 16 | */ 17 | 18 | #include 19 | #include 20 | #include 21 | #include 22 | #include 23 | #include 24 | 25 | #include 26 | #include 27 | #include 28 | 29 | #include 30 | #include 31 | #include 32 | #include 33 | 34 | #include "termux-am.h" 35 | 36 | void send_blocking(const int fd, const char* data, int len) { 37 | while (len > 0) { 38 | int ret = send(fd, data, len, MSG_NOSIGNAL); 39 | if (ret == -1) { 40 | perror("Socket write error"); 41 | exit(1); 42 | } 43 | len -= ret; 44 | data += ret; 45 | } 46 | } 47 | 48 | 49 | bool recv_part(const int fd, char* data, int len) { 50 | while (len > 0) { 51 | int ret = recv(fd, data, 1, 0); 52 | if (ret == -1) { 53 | perror("Socket read error"); 54 | exit(1); 55 | } 56 | if (*data == '\0' || ret == 0) { 57 | return true; 58 | } 59 | data++; 60 | len--; 61 | } 62 | return false; 63 | } 64 | 65 | bool is_number(const std::string& s) { 66 | std::string::const_iterator it = s.begin(); 67 | while (it != s.end() && std::isdigit(*it)) ++it; 68 | return !s.empty() && it == s.end(); 69 | } 70 | 71 | 72 | int main(int argc, char* argv[]) { 73 | if (argc > 2) { 74 | std::cerr << "termux-am-socket only expects 1 argument and received " << argc - 1 << std::endl; 75 | return 1; 76 | } 77 | 78 | struct sockaddr_un adr = {.sun_family = AF_UNIX}; 79 | if (strlen(SOCKET_PATH) >= sizeof(adr.sun_path)) { 80 | std::cerr << "Socket path \"" << SOCKET_PATH << "\" too long" << std::endl; 81 | return 1; 82 | } 83 | 84 | const int fd = socket(AF_UNIX, SOCK_STREAM, 0); 85 | if (fd == -1) { 86 | perror("Could not create socket"); 87 | return 1; 88 | } 89 | 90 | strncpy(adr.sun_path, SOCKET_PATH, sizeof(adr.sun_path)-1); 91 | if (connect(fd, (struct sockaddr*) &adr, sizeof(adr)) == -1) { 92 | perror("Could not connect to socket"); 93 | close(fd); 94 | return 1; 95 | } 96 | 97 | if (argc == 2) { 98 | send_blocking(fd, argv[1], strlen(argv[1])); 99 | } 100 | 101 | shutdown(fd, SHUT_WR); 102 | 103 | int exit_code; 104 | 105 | { 106 | char tmp[10]; 107 | memset(tmp, '\0', sizeof(tmp)); 108 | if (!recv_part(fd, tmp, sizeof(tmp) - 1)) { 109 | std::string errmsg = "Exit code \"" + std::string(tmp) + "\" is too long. It must be valid number between 0-255"; 110 | if (errno == 0) 111 | std::cerr << errmsg << std::endl; 112 | else 113 | perror(errmsg.c_str()); 114 | close(fd); 115 | return 1; 116 | } 117 | 118 | // strtol returns 0 if conversion failed and allows leading whitespaces 119 | errno = 0; 120 | exit_code = strtol(tmp, NULL, 10); 121 | if (!is_number(std::string(tmp)) || (exit_code == 0 && std::string(tmp) != "0")) { 122 | std::cerr << "Exit code \"" + std::string(tmp) + "\" is not a valid number between 0-255" << std::endl; 123 | close(fd); 124 | return 1; 125 | } 126 | 127 | // Out of bound exit codes would return with exit code `44` `Channel number out of range`. 128 | if (exit_code < 0 || exit_code > 255) { 129 | std::cerr << "Exit code \"" << std::string(tmp) << "\" is not a valid exit code between 0-255" << std::endl; 130 | close(fd); 131 | return 1; 132 | } 133 | } 134 | 135 | { 136 | char tmp[4096]; 137 | bool ret; 138 | do { 139 | memset(tmp, '\0', sizeof(tmp)); 140 | ret = recv_part(fd, tmp, sizeof(tmp)-1); 141 | fputs(tmp, stdout); 142 | } while (!ret); 143 | } 144 | 145 | { 146 | char tmp[4096]; 147 | bool ret; 148 | do { 149 | memset(tmp, '\0', sizeof(tmp)); 150 | ret = recv_part(fd, tmp, sizeof(tmp)-1); 151 | fputs(tmp, stderr); 152 | } while (!ret); 153 | } 154 | 155 | close(fd); 156 | 157 | return exit_code; 158 | } 159 | -------------------------------------------------------------------------------- /termux-am.h.in: -------------------------------------------------------------------------------- 1 | /** 2 | * termux-am sends commands to the Termux:API app through a unix socket 3 | * Copyright (C) 2021 Tarek Sander 4 | * 5 | * This program is free software: you can redistribute it and/or 6 | * modify it under the terms of the GNU General Public License as 7 | * published by the Free Software Foundation, version 3. 8 | * 9 | * This program is distributed in the hope that it will be useful, 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 | * GNU General Public License for more details. 13 | * 14 | * You should have received a copy of the GNU General Public License 15 | * along with this program. If not, see . 16 | */ 17 | 18 | #define SOCKET_PATH "@TERMUX_APPS_DIR@/@TERMUX_APP_PACKAGE@/termux-am/am.sock" 19 | -------------------------------------------------------------------------------- /termux-am.sh.in: -------------------------------------------------------------------------------- 1 | #!@TERMUX_PREFIX@/bin/bash 2 | # shellcheck disable=SC2039,SC2059 3 | TERMUX_AM_SOCKET_VERSION=1.5.0 4 | 5 | 6 | COMMAND_TYPE="am_command_run" # Default to "am_command_run" 7 | NOOP_COMMAND=0 # Default to 0 8 | 9 | 10 | ## 11 | # main `[argument...]` 12 | ## 13 | main() { 14 | 15 | # Process the command arguments passed to termux-am if arguments received 16 | if [ $# -ne 0 ]; then 17 | process_arguments "$@" || return $? 18 | 19 | [ "$NOOP_COMMAND" = "1" ] && return 0 20 | else 21 | show_help || return $? 22 | return 0 23 | fi 24 | 25 | # TERMUX_APP__AM_SOCKET_SERVER_ENABLED=false is exported by termux-app 26 | # if server is disabled, so don't try to connect to server if its 27 | # disabled and save a few milliseconds and also warn user. 28 | if [[ "$TERMUX_APP__AM_SOCKET_SERVER_ENABLED" == "false" ]]; then 29 | echo "TermuxAm server is not enabled. Make sure \"run-termux-am-socket-server=false\" is not added to the \"~/.termux/termux.properties\" file" 1>&2 30 | return 1; 31 | fi 32 | 33 | local am_command_string 34 | 35 | if [[ "$COMMAND_TYPE" == "am_command_run" ]]; then 36 | if [ $# -ne 0 ]; then 37 | # Converts arguments array to a single string that can be reused as shell input 38 | # https://www.gnu.org/software/bash/manual/html_node/Bash-Builtins.html#printf 39 | # https://github.com/bminor/bash/blob/bash-5.1/builtins/printf.def#L575 40 | # https://github.com/bminor/bash/blob/bash-5.1/lib/sh/strtrans.c 41 | # https://github.com/bminor/bash/blob/bash-5.1/lib/sh/shquote.c 42 | printf -v "am_command_string" "%q " "$@" || return $? 43 | fi 44 | elif [[ "$COMMAND_TYPE" == "am_command_help" ]]; then 45 | : # Do not pass any arguments so that 'am --help' is returned by server 46 | else 47 | echo "Invalid COMMAND_TYPE \"$COMMAND_TYPE\" set" 1>&2 48 | return 1 49 | fi 50 | 51 | termux-am-socket "$am_command_string" 52 | 53 | } 54 | 55 | ## 56 | # process_arguments `[argument...]` 57 | ## 58 | process_arguments() { 59 | 60 | local opt; local arg; local OPTARG; local OPTIND 61 | 62 | # Parse options to termux-am command 63 | while getopts ":h-:" opt; do 64 | case "${opt}" in 65 | -) 66 | arg="${OPTARG#*=}" 67 | case "${OPTARG}" in 68 | am-help) 69 | COMMAND_TYPE="am_command_help" 70 | ;; 71 | help) 72 | show_help 73 | NOOP_COMMAND=1; return 0 74 | ;; 75 | version) 76 | echo "$TERMUX_AM_SOCKET_VERSION" 77 | NOOP_COMMAND=1; return 0 78 | ;; 79 | *) 80 | :;; 81 | esac 82 | ;; 83 | h) 84 | show_help 85 | NOOP_COMMAND=1; return 0 86 | ;; 87 | \?) 88 | :;; 89 | esac 90 | done 91 | shift $((OPTIND - 1)) # Remove already processed arguments from argument list 92 | 93 | return 0; 94 | 95 | } 96 | 97 | ## 98 | # show_help 99 | ## 100 | show_help() { 101 | 102 | cat <<'HELP_EOF' 103 | 104 | termux-am is a wrapper script that converts the arguments array 105 | passed to a single string that can be reused as shell input with the 106 | bash 'printf "%q"' built-in and passes the string to termux-am-socket. 107 | 108 | 109 | Usage: 110 | termux-am [command_options] 111 | 112 | 113 | Available command_options: 114 | [ -h | --help ] Display termux-am help screen. 115 | [ --am-help ] Display am command help screen. 116 | [ --version ] Display version. 117 | 118 | 119 | termux-am-socket sends the converted string to 120 | "@TERMUX_APPS_DIR@/@TERMUX_APP_PACKAGE@/termux-am/am.sock" 121 | local unix socket server that is run by termux-app if enabled, which 122 | executes it as an android activity manager (am) command from within 123 | termux-app java process via termux/termux-am-library. 124 | 125 | The termux-am provides similar functionality to "$PREFIX/bin/am" 126 | (and "/system/bin/am"), but should be faster since it does not 127 | require starting a dalvik vm for every command as done by "am" via 128 | termux/TermuxAm. 129 | 130 | The server normally only allows termux-app user and root user to 131 | connect to it. If you run termux-am with root, then the am commands 132 | executed will be run as the termux user and its permissions, 133 | capabilities and selinux context instead of root. 134 | 135 | The server is enabled by default and can be disabled by adding 136 | "run-termux-am-socket-server=false" to the 137 | "~/.termux/termux.properties" 138 | file. Changes require termux-app to be force stopped and restarted. 139 | 140 | The current state of the server can be checked with the 141 | TERMUX_APP__AM_SOCKET_SERVER_ENABLED env variable. 142 | 143 | HELP_EOF 144 | 145 | echo "TERMUX_APP__AM_SOCKET_SERVER_ENABLED=$TERMUX_APP__AM_SOCKET_SERVER_ENABLED" 146 | 147 | } 148 | 149 | main "$@" 150 | --------------------------------------------------------------------------------