parseconf.c
上传用户:ig0539
上传日期:2022-05-21
资源大小:181k
文件大小:12k
- /*
- * Part of Very Secure FTPd
- * Licence: GPL v2
- * Author: Chris Evans
- * parseconf.c
- *
- * Routines and support to load in a file full of tunable variables and
- * settings, populating corresponding runtime variables.
- */
- #include "parseconf.h"
- #include "tunables.h"
- #include "str.h"
- #include "filestr.h"
- #include "defs.h"
- #include "sysutil.h"
- #include "utility.h"
- static const char* s_p_saved_filename;
- /* Tables mapping setting names to runtime variables */
- /* Boolean settings */
- static struct parseconf_bool_setting
- {
- const char* p_setting_name;
- int* p_variable;
- }
- parseconf_bool_array[] =
- {
- { "anonymous_enable", &tunable_anonymous_enable },
- { "local_enable", &tunable_local_enable },
- { "pasv_enable", &tunable_pasv_enable },
- { "port_enable", &tunable_port_enable },
- { "chroot_local_user", &tunable_chroot_local_user },
- { "write_enable", &tunable_write_enable },
- { "anon_upload_enable", &tunable_anon_upload_enable },
- { "anon_mkdir_write_enable", &tunable_anon_mkdir_write_enable },
- { "anon_other_write_enable", &tunable_anon_other_write_enable },
- { "chown_uploads", &tunable_chown_uploads },
- { "connect_from_port_20", &tunable_connect_from_port_20 },
- { "xferlog_enable", &tunable_xferlog_enable },
- { "dirmessage_enable", &tunable_dirmessage_enable },
- { "anon_world_readable_only", &tunable_anon_world_readable_only },
- { "async_abor_enable", &tunable_async_abor_enable },
- { "ascii_upload_enable", &tunable_ascii_upload_enable },
- { "ascii_download_enable", &tunable_ascii_download_enable },
- { "one_process_model", &tunable_one_process_model },
- { "xferlog_std_format", &tunable_xferlog_std_format },
- { "pasv_promiscuous", &tunable_pasv_promiscuous },
- { "deny_email_enable", &tunable_deny_email_enable },
- { "chroot_list_enable", &tunable_chroot_list_enable },
- { "setproctitle_enable", &tunable_setproctitle_enable },
- { "text_userdb_names", &tunable_text_userdb_names },
- { "ls_recurse_enable", &tunable_ls_recurse_enable },
- { "log_ftp_protocol", &tunable_log_ftp_protocol },
- { "guest_enable", &tunable_guest_enable },
- { "userlist_enable", &tunable_userlist_enable },
- { "userlist_deny", &tunable_userlist_deny },
- { "use_localtime", &tunable_use_localtime },
- { "check_shell", &tunable_check_shell },
- { "hide_ids", &tunable_hide_ids },
- { "listen", &tunable_listen },
- { "port_promiscuous", &tunable_port_promiscuous },
- { "passwd_chroot_enable", &tunable_passwd_chroot_enable },
- { "no_anon_password", &tunable_no_anon_password },
- { "tcp_wrappers", &tunable_tcp_wrappers },
- { "use_sendfile", &tunable_use_sendfile },
- { "force_dot_files", &tunable_force_dot_files },
- { "listen_ipv6", &tunable_listen_ipv6 },
- { "dual_log_enable", &tunable_dual_log_enable },
- { "syslog_enable", &tunable_syslog_enable },
- { "background", &tunable_background },
- { "virtual_use_local_privs", &tunable_virtual_use_local_privs },
- { "session_support", &tunable_session_support },
- { "download_enable", &tunable_download_enable },
- { "dirlist_enable", &tunable_dirlist_enable },
- { "chmod_enable", &tunable_chmod_enable },
- { "secure_email_list_enable", &tunable_secure_email_list_enable },
- { "run_as_launching_user", &tunable_run_as_launching_user },
- { "no_log_lock", &tunable_no_log_lock },
- { "ssl_enable", &tunable_ssl_enable },
- { "allow_anon_ssl", &tunable_allow_anon_ssl },
- { "force_local_logins_ssl", &tunable_force_local_logins_ssl },
- { "force_local_data_ssl", &tunable_force_local_data_ssl },
- { "ssl_sslv2", &tunable_sslv2 },
- { "ssl_sslv3", &tunable_sslv3 },
- { "ssl_tlsv1", &tunable_tlsv1 },
- { "tilde_user_enable", &tunable_tilde_user_enable },
- { "force_anon_logins_ssl", &tunable_force_anon_logins_ssl },
- { "force_anon_data_ssl", &tunable_force_anon_data_ssl },
- { "mdtm_write", &tunable_mdtm_write },
- { "lock_upload_files", &tunable_lock_upload_files },
- { "pasv_addr_resolve", &tunable_pasv_addr_resolve },
- { "debug_ssl", &tunable_debug_ssl },
- { "require_cert", &tunable_require_cert },
- { "validate_cert", &tunable_validate_cert },
- { "strict_ssl_read_eof", &tunable_strict_ssl_read_eof },
- { "strict_ssl_write_shutdown", &tunable_strict_ssl_write_shutdown },
- { "ssl_request_cert", &tunable_ssl_request_cert },
- { "delete_failed_uploads", &tunable_delete_failed_uploads },
- { "implicit_ssl", &tunable_implicit_ssl },
- { "sandbox", &tunable_sandbox },
- { "require_ssl_reuse", &tunable_require_ssl_reuse },
- { "isolate", &tunable_isolate },
- { "isolate_network", &tunable_isolate_network },
- { 0, 0 }
- };
- static struct parseconf_uint_setting
- {
- const char* p_setting_name;
- unsigned int* p_variable;
- }
- parseconf_uint_array[] =
- {
- { "accept_timeout", &tunable_accept_timeout },
- { "connect_timeout", &tunable_connect_timeout },
- { "local_umask", &tunable_local_umask },
- { "anon_umask", &tunable_anon_umask },
- { "ftp_data_port", &tunable_ftp_data_port },
- { "idle_session_timeout", &tunable_idle_session_timeout },
- { "data_connection_timeout", &tunable_data_connection_timeout },
- { "pasv_min_port", &tunable_pasv_min_port },
- { "pasv_max_port", &tunable_pasv_max_port },
- { "anon_max_rate", &tunable_anon_max_rate },
- { "local_max_rate", &tunable_local_max_rate },
- { "listen_port", &tunable_listen_port },
- { "max_clients", &tunable_max_clients },
- { "file_open_mode", &tunable_file_open_mode },
- { "max_per_ip", &tunable_max_per_ip },
- { "trans_chunk_size", &tunable_trans_chunk_size },
- { "delay_failed_login", &tunable_delay_failed_login },
- { "delay_successful_login", &tunable_delay_successful_login },
- { "max_login_fails", &tunable_max_login_fails },
- { "chown_upload_mode", &tunable_chown_upload_mode },
- { 0, 0 }
- };
- static struct parseconf_str_setting
- {
- const char* p_setting_name;
- const char** p_variable;
- }
- parseconf_str_array[] =
- {
- { "secure_chroot_dir", &tunable_secure_chroot_dir },
- { "ftp_username", &tunable_ftp_username },
- { "chown_username", &tunable_chown_username },
- { "xferlog_file", &tunable_xferlog_file },
- { "vsftpd_log_file", &tunable_vsftpd_log_file },
- { "message_file", &tunable_message_file },
- { "nopriv_user", &tunable_nopriv_user },
- { "ftpd_banner", &tunable_ftpd_banner },
- { "banned_email_file", &tunable_banned_email_file },
- { "chroot_list_file", &tunable_chroot_list_file },
- { "pam_service_name", &tunable_pam_service_name },
- { "guest_username", &tunable_guest_username },
- { "userlist_file", &tunable_userlist_file },
- { "anon_root", &tunable_anon_root },
- { "local_root", &tunable_local_root },
- { "banner_file", &tunable_banner_file },
- { "pasv_address", &tunable_pasv_address },
- { "listen_address", &tunable_listen_address },
- { "user_config_dir", &tunable_user_config_dir },
- { "listen_address6", &tunable_listen_address6 },
- { "cmds_allowed", &tunable_cmds_allowed },
- { "hide_file", &tunable_hide_file },
- { "deny_file", &tunable_deny_file },
- { "user_sub_token", &tunable_user_sub_token },
- { "email_password_file", &tunable_email_password_file },
- { "rsa_cert_file", &tunable_rsa_cert_file },
- { "dsa_cert_file", &tunable_dsa_cert_file },
- { "ssl_ciphers", &tunable_ssl_ciphers },
- { "rsa_private_key_file", &tunable_rsa_private_key_file },
- { "dsa_private_key_file", &tunable_dsa_private_key_file },
- { "ca_certs_file", &tunable_ca_certs_file },
- { "cmds_denied", &tunable_cmds_denied },
- { 0, 0 }
- };
- void
- vsf_parseconf_load_file(const char* p_filename, int errs_fatal)
- {
- struct mystr config_file_str = INIT_MYSTR;
- struct mystr config_setting_str = INIT_MYSTR;
- struct mystr config_value_str = INIT_MYSTR;
- unsigned int str_pos = 0;
- int retval;
- if (!p_filename)
- {
- p_filename = s_p_saved_filename;
- }
- else
- {
- if (s_p_saved_filename)
- {
- vsf_sysutil_free((char*)s_p_saved_filename);
- }
- s_p_saved_filename = vsf_sysutil_strdup(p_filename);
- }
- if (!p_filename)
- {
- bug("null filename in vsf_parseconf_load_file");
- }
- retval = str_fileread(&config_file_str, p_filename, VSFTP_CONF_FILE_MAX);
- if (vsf_sysutil_retval_is_error(retval))
- {
- if (errs_fatal)
- {
- die2("cannot read config file: ", p_filename);
- }
- else
- {
- str_free(&config_file_str);
- return;
- }
- }
- {
- struct vsf_sysutil_statbuf* p_statbuf = 0;
- retval = vsf_sysutil_stat(p_filename, &p_statbuf);
- /* Security: check current user owns the config file. These are sanity
- * checks for the admin, and are NOT designed to be checks safe from
- * race conditions.
- */
- if (vsf_sysutil_retval_is_error(retval) ||
- vsf_sysutil_statbuf_get_uid(p_statbuf) != vsf_sysutil_getuid() ||
- !vsf_sysutil_statbuf_is_regfile(p_statbuf))
- {
- die("config file not owned by correct user, or not a file");
- }
- vsf_sysutil_free(p_statbuf);
- }
- while (str_getline(&config_file_str, &config_setting_str, &str_pos))
- {
- if (str_isempty(&config_setting_str) ||
- str_get_char_at(&config_setting_str, 0) == '#' ||
- str_all_space(&config_setting_str))
- {
- continue;
- }
- vsf_parseconf_load_setting(str_getbuf(&config_setting_str), errs_fatal);
- }
- str_free(&config_file_str);
- str_free(&config_setting_str);
- str_free(&config_value_str);
- }
- void
- vsf_parseconf_load_setting(const char* p_setting, int errs_fatal)
- {
- static struct mystr s_setting_str;
- static struct mystr s_value_str;
- while (vsf_sysutil_isspace(*p_setting))
- {
- p_setting++;
- }
- str_alloc_text(&s_setting_str, p_setting);
- str_split_char(&s_setting_str, &s_value_str, '=');
- /* Is it a string setting? */
- {
- const struct parseconf_str_setting* p_str_setting = parseconf_str_array;
- while (p_str_setting->p_setting_name != 0)
- {
- if (str_equal_text(&s_setting_str, p_str_setting->p_setting_name))
- {
- /* Got it */
- const char** p_curr_setting = p_str_setting->p_variable;
- if (*p_curr_setting)
- {
- vsf_sysutil_free((char*) *p_curr_setting);
- }
- if (str_isempty(&s_value_str))
- {
- *p_curr_setting = 0;
- }
- else
- {
- *p_curr_setting = str_strdup(&s_value_str);
- }
- return;
- }
- p_str_setting++;
- }
- }
- if (str_isempty(&s_value_str))
- {
- if (errs_fatal)
- {
- die2("missing value in config file for: ", str_getbuf(&s_setting_str));
- }
- else
- {
- return;
- }
- }
- /* Is it a boolean value? */
- {
- const struct parseconf_bool_setting* p_bool_setting = parseconf_bool_array;
- while (p_bool_setting->p_setting_name != 0)
- {
- if (str_equal_text(&s_setting_str, p_bool_setting->p_setting_name))
- {
- /* Got it */
- str_upper(&s_value_str);
- if (str_equal_text(&s_value_str, "YES") ||
- str_equal_text(&s_value_str, "TRUE") ||
- str_equal_text(&s_value_str, "1"))
- {
- *(p_bool_setting->p_variable) = 1;
- }
- else if (str_equal_text(&s_value_str, "NO") ||
- str_equal_text(&s_value_str, "FALSE") ||
- str_equal_text(&s_value_str, "0"))
- {
- *(p_bool_setting->p_variable) = 0;
- }
- else if (errs_fatal)
- {
- die2("bad bool value in config file for: ",
- str_getbuf(&s_setting_str));
- }
- return;
- }
- p_bool_setting++;
- }
- }
- /* Is it an unsigned integer setting? */
- {
- const struct parseconf_uint_setting* p_uint_setting = parseconf_uint_array;
- while (p_uint_setting->p_setting_name != 0)
- {
- if (str_equal_text(&s_setting_str, p_uint_setting->p_setting_name))
- {
- /* Got it */
- /* If the value starts with 0, assume it's an octal value */
- if (!str_isempty(&s_value_str) &&
- str_get_char_at(&s_value_str, 0) == '0')
- {
- *(p_uint_setting->p_variable) = str_octal_to_uint(&s_value_str);
- }
- else
- {
- *(p_uint_setting->p_variable) = str_atoi(&s_value_str);
- }
- return;
- }
- p_uint_setting++;
- }
- }
- if (errs_fatal)
- {
- die2("unrecognised variable in config file: ", str_getbuf(&s_setting_str));
- }
- }