static void run_shell(void) { int done = 0; static const char *help_argv[] = { HELP_COMMAND, NULL }; /* 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(&line, stdin, '\n') == 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); }
int is_valid_cmd(InputCmd InputCmd_s) { if (!is_valid_cmd_name(InputCmd_s.cmdStr)) { fprintf(stderr, "Erreur! [%s] n'est pas une commande valide.\n", InputCmd_s.cmdStr); return 0; } else if (!has_required_args(InputCmd_s)) { fprintf(stderr, "Erreur! [%s] Erreur de parametres pour cette commande.\n", InputCmd_s.cmdStr); return 0; } return 1; }
int main(int argc, char **argv) { char *prog; const char **user_argv; struct commands *cmd; int devnull_fd; int count; git_setup_gettext(); git_extract_argv0_path(argv[0]); /* * Always open file descriptors 0/1/2 to avoid clobbering files * in die(). It also avoids not messing up when the pipes are * dup'ed onto stdin/stdout/stderr in the child processes we spawn. */ devnull_fd = open("/dev/null", O_RDWR); while (devnull_fd >= 0 && devnull_fd <= 2) devnull_fd = dup(devnull_fd); if (devnull_fd == -1) die_errno("opening /dev/null failed"); close (devnull_fd); /* * 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)); } }
int main(int argc, char **argv) { char *prog; struct commands *cmd; int devnull_fd; /* * Always open file descriptors 0/1/2 to avoid clobbering files * in die(). It also avoids not messing up when the pipes are * dup'ed onto stdin/stdout/stderr in the child processes we spawn. */ devnull_fd = open("/dev/null", O_RDWR); while (devnull_fd >= 0 && devnull_fd <= 2) devnull_fd = dup(devnull_fd); if (devnull_fd == -1) die_errno("opening /dev/null failed"); close (devnull_fd); /* * Special hack to pretend to be a CVS server */ if (argc == 2 && !strcmp(argv[1], "cvs server")) argv--; /* * We do not accept anything but "-c" followed by "cmd arg", * where "cmd" is a very limited subset of git commands. */ else if (argc != 3 || strcmp(argv[1], "-c")) { if (chdir(COMMAND_DIR)) die("Sorry, the interactive git-shell is not enabled"); for (;;) { prog = readline("git> "); if (prog == NULL) { printf("\n"); exit(0); } else if (!strcmp(prog, "quit") || !strcmp(prog, "logout") || !strcmp(prog, "exit")) { exit(0); } else if (!strcmp(prog, "")) { } else if (is_valid_cmd_name(prog)) { run(prog); add_history(prog); } else { printf("invalid command format '%s'\n", prog); } free(prog); }; } prog = 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)); } if (chdir(COMMAND_DIR)) die("unrecognized command '%s'", prog); if (is_valid_cmd_name(prog)) execl(prog, prog, (char *) NULL); die("unrecognized command '%s'", prog); }
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)); } }