Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 1 | #include "cache.h" |
| 2 | #include "quote.h" |
Stefan Beller | d807c4a | 2018-04-10 14:26:18 -0700 | [diff] [blame] | 3 | #include "exec-cmd.h" |
Johannes Schindelin | 0c696fe | 2007-10-09 15:33:25 +0100 | [diff] [blame] | 4 | #include "strbuf.h" |
Greg Brockman | e69164d | 2010-07-28 00:43:03 -0700 | [diff] [blame] | 5 | #include "run-command.h" |
Nguyễn Thái Ngọc Duy | 65b5f94 | 2018-05-20 20:40:06 +0200 | [diff] [blame] | 6 | #include "alias.h" |
Johannes Schindelin | 08d383f | 2020-04-10 11:27:50 +0000 | [diff] [blame] | 7 | #include "prompt.h" |
Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 8 | |
Greg Brockman | 2dbc887 | 2010-07-28 17:31:01 -0700 | [diff] [blame] | 9 | #define COMMAND_DIR "git-shell-commands" |
Greg Brockman | e69164d | 2010-07-28 00:43:03 -0700 | [diff] [blame] | 10 | #define HELP_COMMAND COMMAND_DIR "/help" |
Jonathan Nieder | 3529708 | 2013-03-09 14:00:11 -0800 | [diff] [blame] | 11 | #define NOLOGIN_COMMAND COMMAND_DIR "/no-interactive-login" |
Greg Brockman | 2dbc887 | 2010-07-28 17:31:01 -0700 | [diff] [blame] | 12 | |
Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 13 | static int do_generic_cmd(const char *me, char *arg) |
| 14 | { |
| 15 | const char *my_argv[4]; |
| 16 | |
Johannes Sixt | e1464ca | 2008-07-21 21:19:52 +0200 | [diff] [blame] | 17 | setup_path(); |
Jeff King | 3ec8044 | 2017-04-29 08:36:44 -0400 | [diff] [blame] | 18 | if (!arg || !(arg = sq_dequote(arg)) || *arg == '-') |
Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 19 | die("bad argument"); |
René Scharfe | ec6ee0c | 2019-11-26 16:00:43 +0100 | [diff] [blame] | 20 | if (!skip_prefix(me, "git-", &me)) |
Michal Ostrowski | 77cb17e | 2006-01-10 21:12:17 -0500 | [diff] [blame] | 21 | die("bad command"); |
Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 22 | |
René Scharfe | ec6ee0c | 2019-11-26 16:00:43 +0100 | [diff] [blame] | 23 | my_argv[0] = me; |
Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 24 | my_argv[1] = arg; |
| 25 | my_argv[2] = NULL; |
| 26 | |
Junio C Hamano | 9201c70 | 2006-03-05 02:47:29 -0800 | [diff] [blame] | 27 | return execv_git_cmd(my_argv); |
Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 28 | } |
| 29 | |
Greg Brockman | 2dbc887 | 2010-07-28 17:31:01 -0700 | [diff] [blame] | 30 | static int is_valid_cmd_name(const char *cmd) |
| 31 | { |
| 32 | /* Test command contains no . or / characters */ |
| 33 | return cmd[strcspn(cmd, "./")] == '\0'; |
| 34 | } |
| 35 | |
| 36 | static char *make_cmd(const char *prog) |
| 37 | { |
Jeff King | b2724c8 | 2014-06-19 17:26:56 -0400 | [diff] [blame] | 38 | return xstrfmt("%s/%s", COMMAND_DIR, prog); |
Greg Brockman | 2dbc887 | 2010-07-28 17:31:01 -0700 | [diff] [blame] | 39 | } |
| 40 | |
| 41 | static void cd_to_homedir(void) |
| 42 | { |
| 43 | const char *home = getenv("HOME"); |
| 44 | if (!home) |
| 45 | die("could not determine user's home directory; HOME is unset"); |
| 46 | if (chdir(home) == -1) |
| 47 | die("could not chdir to user's home directory"); |
| 48 | } |
Johannes Schindelin | 0c696fe | 2007-10-09 15:33:25 +0100 | [diff] [blame] | 49 | |
Greg Brockman | e69164d | 2010-07-28 00:43:03 -0700 | [diff] [blame] | 50 | static void run_shell(void) |
| 51 | { |
| 52 | int done = 0; |
| 53 | static const char *help_argv[] = { HELP_COMMAND, NULL }; |
Jonathan Nieder | 3529708 | 2013-03-09 14:00:11 -0800 | [diff] [blame] | 54 | |
| 55 | if (!access(NOLOGIN_COMMAND, F_OK)) { |
| 56 | /* Interactive login disabled. */ |
| 57 | const char *argv[] = { NOLOGIN_COMMAND, NULL }; |
| 58 | int status; |
| 59 | |
| 60 | status = run_command_v_opt(argv, 0); |
| 61 | if (status < 0) |
| 62 | exit(127); |
| 63 | exit(status); |
| 64 | } |
| 65 | |
Greg Brockman | e69164d | 2010-07-28 00:43:03 -0700 | [diff] [blame] | 66 | /* Print help if enabled */ |
| 67 | run_command_v_opt(help_argv, RUN_SILENT_EXEC_FAILURE); |
| 68 | |
| 69 | do { |
| 70 | struct strbuf line = STRBUF_INIT; |
| 71 | const char *prog; |
| 72 | char *full_cmd; |
| 73 | char *rawargs; |
Greg Brockman | 9f29fe9 | 2010-08-27 01:36:13 -0400 | [diff] [blame] | 74 | char *split_args; |
Greg Brockman | e69164d | 2010-07-28 00:43:03 -0700 | [diff] [blame] | 75 | const char **argv; |
| 76 | int code; |
Greg Brockman | 9f29fe9 | 2010-08-27 01:36:13 -0400 | [diff] [blame] | 77 | int count; |
Greg Brockman | e69164d | 2010-07-28 00:43:03 -0700 | [diff] [blame] | 78 | |
| 79 | fprintf(stderr, "git> "); |
Johannes Schindelin | 08d383f | 2020-04-10 11:27:50 +0000 | [diff] [blame] | 80 | if (git_read_line_interactively(&line) == EOF) { |
Greg Brockman | e69164d | 2010-07-28 00:43:03 -0700 | [diff] [blame] | 81 | fprintf(stderr, "\n"); |
| 82 | strbuf_release(&line); |
| 83 | break; |
| 84 | } |
Greg Brockman | e69164d | 2010-07-28 00:43:03 -0700 | [diff] [blame] | 85 | rawargs = strbuf_detach(&line, NULL); |
Greg Brockman | 9f29fe9 | 2010-08-27 01:36:13 -0400 | [diff] [blame] | 86 | split_args = xstrdup(rawargs); |
| 87 | count = split_cmdline(split_args, &argv); |
| 88 | if (count < 0) { |
| 89 | fprintf(stderr, "invalid command format '%s': %s\n", rawargs, |
| 90 | split_cmdline_strerror(count)); |
| 91 | free(split_args); |
Greg Brockman | e69164d | 2010-07-28 00:43:03 -0700 | [diff] [blame] | 92 | free(rawargs); |
| 93 | continue; |
| 94 | } |
| 95 | |
| 96 | prog = argv[0]; |
| 97 | if (!strcmp(prog, "")) { |
| 98 | } else if (!strcmp(prog, "quit") || !strcmp(prog, "logout") || |
| 99 | !strcmp(prog, "exit") || !strcmp(prog, "bye")) { |
| 100 | done = 1; |
| 101 | } else if (is_valid_cmd_name(prog)) { |
| 102 | full_cmd = make_cmd(prog); |
| 103 | argv[0] = full_cmd; |
| 104 | code = run_command_v_opt(argv, RUN_SILENT_EXEC_FAILURE); |
| 105 | if (code == -1 && errno == ENOENT) { |
| 106 | fprintf(stderr, "unrecognized command '%s'\n", prog); |
| 107 | } |
| 108 | free(full_cmd); |
| 109 | } else { |
| 110 | fprintf(stderr, "invalid command format '%s'\n", prog); |
| 111 | } |
| 112 | |
| 113 | free(argv); |
| 114 | free(rawargs); |
| 115 | } while (!done); |
| 116 | } |
| 117 | |
Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 118 | static struct commands { |
| 119 | const char *name; |
| 120 | int (*exec)(const char *me, char *arg); |
| 121 | } cmd_list[] = { |
| 122 | { "git-receive-pack", do_generic_cmd }, |
| 123 | { "git-upload-pack", do_generic_cmd }, |
Erik Broes | 79f72b9 | 2009-04-09 21:58:52 +0200 | [diff] [blame] | 124 | { "git-upload-archive", do_generic_cmd }, |
Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 125 | { NULL }, |
| 126 | }; |
| 127 | |
Jeff King | 3f2e229 | 2016-07-01 01:58:58 -0400 | [diff] [blame] | 128 | int cmd_main(int argc, const char **argv) |
Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 129 | { |
| 130 | char *prog; |
Greg Brockman | 2dbc887 | 2010-07-28 17:31:01 -0700 | [diff] [blame] | 131 | const char **user_argv; |
Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 132 | struct commands *cmd; |
Greg Brockman | 9f29fe9 | 2010-08-27 01:36:13 -0400 | [diff] [blame] | 133 | int count; |
Paolo Bonzini | 0cfeed2 | 2008-08-27 17:20:35 +0200 | [diff] [blame] | 134 | |
| 135 | /* |
Junio C Hamano | bc7c73e | 2007-12-01 22:16:19 -0800 | [diff] [blame] | 136 | * Special hack to pretend to be a CVS server |
| 137 | */ |
Greg Brockman | e69164d | 2010-07-28 00:43:03 -0700 | [diff] [blame] | 138 | if (argc == 2 && !strcmp(argv[1], "cvs server")) { |
Johannes Schindelin | 0c696fe | 2007-10-09 15:33:25 +0100 | [diff] [blame] | 139 | argv--; |
Greg Brockman | e69164d | 2010-07-28 00:43:03 -0700 | [diff] [blame] | 140 | } else if (argc == 1) { |
| 141 | /* Allow the user to run an interactive shell */ |
| 142 | cd_to_homedir(); |
Ramkumar Ramachandra | 70256a3 | 2010-08-24 11:06:51 +0530 | [diff] [blame] | 143 | if (access(COMMAND_DIR, R_OK | X_OK) == -1) { |
| 144 | die("Interactive git shell is not enabled.\n" |
| 145 | "hint: ~/" COMMAND_DIR " should exist " |
| 146 | "and have read and execute access."); |
| 147 | } |
Greg Brockman | e69164d | 2010-07-28 00:43:03 -0700 | [diff] [blame] | 148 | run_shell(); |
| 149 | exit(0); |
| 150 | } else if (argc != 3 || strcmp(argv[1], "-c")) { |
| 151 | /* |
| 152 | * We do not accept any other modes except "-c" followed by |
| 153 | * "cmd arg", where "cmd" is a very limited subset of git |
| 154 | * commands or a command in the COMMAND_DIR |
| 155 | */ |
| 156 | die("Run with no arguments or with -c cmd"); |
| 157 | } |
Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 158 | |
Greg Brockman | 2dbc887 | 2010-07-28 17:31:01 -0700 | [diff] [blame] | 159 | prog = xstrdup(argv[2]); |
Junio C Hamano | bc7c73e | 2007-12-01 22:16:19 -0800 | [diff] [blame] | 160 | if (!strncmp(prog, "git", 3) && isspace(prog[3])) |
| 161 | /* Accept "git foo" as if the caller said "git-foo". */ |
| 162 | prog[3] = '-'; |
| 163 | |
Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 164 | for (cmd = cmd_list ; cmd->name ; cmd++) { |
| 165 | int len = strlen(cmd->name); |
| 166 | char *arg; |
| 167 | if (strncmp(cmd->name, prog, len)) |
| 168 | continue; |
| 169 | arg = NULL; |
| 170 | switch (prog[len]) { |
| 171 | case '\0': |
| 172 | arg = NULL; |
| 173 | break; |
| 174 | case ' ': |
| 175 | arg = prog + len + 1; |
| 176 | break; |
| 177 | default: |
| 178 | continue; |
| 179 | } |
| 180 | exit(cmd->exec(cmd->name, arg)); |
| 181 | } |
Greg Brockman | 2dbc887 | 2010-07-28 17:31:01 -0700 | [diff] [blame] | 182 | |
| 183 | cd_to_homedir(); |
Greg Brockman | 9f29fe9 | 2010-08-27 01:36:13 -0400 | [diff] [blame] | 184 | count = split_cmdline(prog, &user_argv); |
| 185 | if (count >= 0) { |
Greg Brockman | 2dbc887 | 2010-07-28 17:31:01 -0700 | [diff] [blame] | 186 | if (is_valid_cmd_name(user_argv[0])) { |
| 187 | prog = make_cmd(user_argv[0]); |
| 188 | user_argv[0] = prog; |
| 189 | execv(user_argv[0], (char *const *) user_argv); |
| 190 | } |
| 191 | free(prog); |
| 192 | free(user_argv); |
| 193 | die("unrecognized command '%s'", argv[2]); |
| 194 | } else { |
| 195 | free(prog); |
Greg Brockman | 9f29fe9 | 2010-08-27 01:36:13 -0400 | [diff] [blame] | 196 | die("invalid command format '%s': %s", argv[2], |
| 197 | split_cmdline_strerror(count)); |
Greg Brockman | 2dbc887 | 2010-07-28 17:31:01 -0700 | [diff] [blame] | 198 | } |
Linus Torvalds | 35eb2d3 | 2005-10-23 14:30:45 -0700 | [diff] [blame] | 199 | } |