diff options
Diffstat (limited to 'third_party/git/shell.c')
| -rw-r--r-- | third_party/git/shell.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/third_party/git/shell.c b/third_party/git/shell.c deleted file mode 100644 index 40084a3013..0000000000 --- a/third_party/git/shell.c +++ /dev/null @@ -1,199 +0,0 @@ -#include "cache.h" -#include "quote.h" -#include "exec-cmd.h" -#include "strbuf.h" -#include "run-command.h" -#include "alias.h" - -#define COMMAND_DIR "git-shell-commands" -#define HELP_COMMAND COMMAND_DIR "/help" -#define NOLOGIN_COMMAND COMMAND_DIR "/no-interactive-login" - -static int do_generic_cmd(const char *me, char *arg) -{ - const char *my_argv[4]; - - setup_path(); - if (!arg || !(arg = sq_dequote(arg)) || *arg == '-') - die("bad argument"); - if (!starts_with(me, "git-")) - die("bad command"); - - my_argv[0] = me + 4; - my_argv[1] = arg; - my_argv[2] = NULL; - - return execv_git_cmd(my_argv); -} - -static int is_valid_cmd_name(const char *cmd) -{ - /* Test command contains no . or / characters */ - return cmd[strcspn(cmd, "./")] == '\0'; -} - -static char *make_cmd(const char *prog) -{ - return xstrfmt("%s/%s", COMMAND_DIR, prog); -} - -static void cd_to_homedir(void) -{ - const char *home = getenv("HOME"); - if (!home) - die("could not determine user's home directory; HOME is unset"); - if (chdir(home) == -1) - die("could not chdir to user's home directory"); -} - -static void run_shell(void) -{ - int done = 0; - static const char *help_argv[] = { HELP_COMMAND, NULL }; - - if (!access(NOLOGIN_COMMAND, F_OK)) { - /* Interactive login disabled. */ - const char *argv[] = { NOLOGIN_COMMAND, NULL }; - int status; - - status = run_command_v_opt(argv, 0); - if (status < 0) - exit(127); - exit(status); - } - - /* Print help if enabled */ - run_command_v_opt(help_argv, RUN_SILENT_EXEC_FAILURE); - - do { - struct strbuf line = STRBUF_INIT; - const char *prog; - char *full_cmd; - char *rawargs; - char *split_args; - const char **argv; - int code; - int count; - - fprintf(stderr, "git> "); - if (strbuf_getline_lf(&line, stdin) == EOF) { - fprintf(stderr, "\n"); - strbuf_release(&line); - break; - } - strbuf_trim(&line); - rawargs = strbuf_detach(&line, NULL); - split_args = xstrdup(rawargs); - count = split_cmdline(split_args, &argv); - if (count < 0) { - fprintf(stderr, "invalid command format '%s': %s\n", rawargs, - split_cmdline_strerror(count)); - free(split_args); - free(rawargs); - continue; - } - - prog = argv[0]; - if (!strcmp(prog, "")) { - } else if (!strcmp(prog, "quit") || !strcmp(prog, "logout") || - !strcmp(prog, "exit") || !strcmp(prog, "bye")) { - done = 1; - } else if (is_valid_cmd_name(prog)) { - full_cmd = make_cmd(prog); - argv[0] = full_cmd; - code = run_command_v_opt(argv, RUN_SILENT_EXEC_FAILURE); - if (code == -1 && errno == ENOENT) { - fprintf(stderr, "unrecognized command '%s'\n", prog); - } - free(full_cmd); - } else { - fprintf(stderr, "invalid command format '%s'\n", prog); - } - - free(argv); - free(rawargs); - } while (!done); -} - -static struct commands { - const char *name; - int (*exec)(const char *me, char *arg); -} cmd_list[] = { - { "git-receive-pack", do_generic_cmd }, - { "git-upload-pack", do_generic_cmd }, - { "git-upload-archive", do_generic_cmd }, - { NULL }, -}; - -int cmd_main(int argc, const char **argv) -{ - char *prog; - const char **user_argv; - struct commands *cmd; - int count; - - /* - * Special hack to pretend to be a CVS server - */ - if (argc == 2 && !strcmp(argv[1], "cvs server")) { - argv--; - } else if (argc == 1) { - /* Allow the user to run an interactive shell */ - cd_to_homedir(); - if (access(COMMAND_DIR, R_OK | X_OK) == -1) { - die("Interactive git shell is not enabled.\n" - "hint: ~/" COMMAND_DIR " should exist " - "and have read and execute access."); - } - run_shell(); - exit(0); - } else if (argc != 3 || strcmp(argv[1], "-c")) { - /* - * We do not accept any other modes except "-c" followed by - * "cmd arg", where "cmd" is a very limited subset of git - * commands or a command in the COMMAND_DIR - */ - die("Run with no arguments or with -c cmd"); - } - - prog = xstrdup(argv[2]); - if (!strncmp(prog, "git", 3) && isspace(prog[3])) - /* Accept "git foo" as if the caller said "git-foo". */ - prog[3] = '-'; - - for (cmd = cmd_list ; cmd->name ; cmd++) { - int len = strlen(cmd->name); - char *arg; - if (strncmp(cmd->name, prog, len)) - continue; - arg = NULL; - switch (prog[len]) { - case '\0': - arg = NULL; - break; - case ' ': - arg = prog + len + 1; - break; - default: - continue; - } - exit(cmd->exec(cmd->name, arg)); - } - - cd_to_homedir(); - count = split_cmdline(prog, &user_argv); - if (count >= 0) { - if (is_valid_cmd_name(user_argv[0])) { - prog = make_cmd(user_argv[0]); - user_argv[0] = prog; - execv(user_argv[0], (char *const *) user_argv); - } - free(prog); - free(user_argv); - die("unrecognized command '%s'", argv[2]); - } else { - free(prog); - die("invalid command format '%s': %s", argv[2], - split_cmdline_strerror(count)); - } -} |