1/* 2 * Part of Very Secure FTPd 3 * Licence: GPL v2 4 * Author: Chris Evans 5 * parseconf.c 6 * 7 * Routines and support to load in a file full of tunable variables and 8 * settings, populating corresponding runtime variables. 9 */ 10 11#include "parseconf.h" 12#include "tunables.h" 13#include "str.h" 14#include "filestr.h" 15#include "defs.h" 16#include "sysutil.h" 17#include "utility.h" 18 19static const char* s_p_saved_filename; 20static int s_strings_copied; 21 22/* File local functions */ 23static void handle_config_setting(struct mystr* p_setting_str, 24 struct mystr* p_value_str, 25 int errs_fatal); 26 27static void copy_string_settings(void); 28 29/* Tables mapping setting names to runtime variables */ 30/* Boolean settings */ 31static struct parseconf_bool_setting 32{ 33 const char* p_setting_name; 34 int* p_variable; 35} 36parseconf_bool_array[] = 37{ 38 { "anonymous_enable", &tunable_anonymous_enable }, 39 { "local_enable", &tunable_local_enable }, 40 { "pasv_enable", &tunable_pasv_enable }, 41 { "port_enable", &tunable_port_enable }, 42 { "chroot_local_user", &tunable_chroot_local_user }, 43 { "write_enable", &tunable_write_enable }, 44 { "anon_upload_enable", &tunable_anon_upload_enable }, 45 { "anon_mkdir_write_enable", &tunable_anon_mkdir_write_enable }, 46 { "anon_other_write_enable", &tunable_anon_other_write_enable }, 47 { "chown_uploads", &tunable_chown_uploads }, 48 { "connect_from_port_20", &tunable_connect_from_port_20 }, 49 { "xferlog_enable", &tunable_xferlog_enable }, 50 { "dirmessage_enable", &tunable_dirmessage_enable }, 51 { "anon_world_readable_only", &tunable_anon_world_readable_only }, 52 { "async_abor_enable", &tunable_async_abor_enable }, 53 { "ascii_upload_enable", &tunable_ascii_upload_enable }, 54 { "ascii_download_enable", &tunable_ascii_download_enable }, 55 { "one_process_model", &tunable_one_process_model }, 56 { "xferlog_std_format", &tunable_xferlog_std_format }, 57 { "pasv_promiscuous", &tunable_pasv_promiscuous }, 58 { "deny_email_enable", &tunable_deny_email_enable }, 59 { "chroot_list_enable", &tunable_chroot_list_enable }, 60 { "setproctitle_enable", &tunable_setproctitle_enable }, 61 { "text_userdb_names", &tunable_text_userdb_names }, 62 { "ls_recurse_enable", &tunable_ls_recurse_enable }, 63 { "log_ftp_protocol", &tunable_log_ftp_protocol }, 64 { "guest_enable", &tunable_guest_enable }, 65 { "userlist_enable", &tunable_userlist_enable }, 66 { "userlist_deny", &tunable_userlist_deny }, 67 { "use_localtime", &tunable_use_localtime }, 68 { "check_shell", &tunable_check_shell }, 69 { "hide_ids", &tunable_hide_ids }, 70 { "listen", &tunable_listen }, 71 { "port_promiscuous", &tunable_port_promiscuous }, 72 { "passwd_chroot_enable", &tunable_passwd_chroot_enable }, 73 { "no_anon_password", &tunable_no_anon_password }, 74 { "tcp_wrappers", &tunable_tcp_wrappers }, 75 { "use_sendfile", &tunable_use_sendfile }, 76 { "force_dot_files", &tunable_force_dot_files }, 77 { "listen_ipv6", &tunable_listen_ipv6 }, 78 { "dual_log_enable", &tunable_dual_log_enable }, 79 { "syslog_enable", &tunable_syslog_enable }, 80 { "background", &tunable_background }, 81 { "virtual_use_local_privs", &tunable_virtual_use_local_privs }, 82 { "session_support", &tunable_session_support }, 83 { "download_enable", &tunable_download_enable }, 84 { "dirlist_enable", &tunable_dirlist_enable }, 85 { "chmod_enable", &tunable_chmod_enable }, 86 { "secure_email_list_enable", &tunable_secure_email_list_enable }, 87 { "run_as_launching_user", &tunable_run_as_launching_user }, 88 { "no_log_lock", &tunable_no_log_lock }, 89 { "ssl_enable", &tunable_ssl_enable }, 90 { "allow_anon_ssl", &tunable_allow_anon_ssl }, 91 { "force_local_logins_ssl", &tunable_force_local_logins_ssl }, 92 { "force_local_data_ssl", &tunable_force_local_data_ssl }, 93 { "ssl_sslv2", &tunable_sslv2 }, 94 { "ssl_sslv3", &tunable_sslv3 }, 95 { "ssl_tlsv1", &tunable_tlsv1 }, 96 { "tilde_user_enable", &tunable_tilde_user_enable }, 97 { "enable_iconv", &tunable_enable_iconv }, // Jiahao 98 { "force_anon_logins_ssl", &tunable_force_anon_logins_ssl }, 99 { "force_anon_data_ssl", &tunable_force_anon_data_ssl }, 100 { "mdtm_write", &tunable_mdtm_write }, 101 { "lock_upload_files", &tunable_lock_upload_files }, 102 { "pasv_addr_resolve", &tunable_pasv_addr_resolve }, 103 { 0, 0 } 104}; 105 106static struct parseconf_uint_setting 107{ 108 const char* p_setting_name; 109 unsigned int* p_variable; 110} 111parseconf_uint_array[] = 112{ 113 { "accept_timeout", &tunable_accept_timeout }, 114 { "connect_timeout", &tunable_connect_timeout }, 115 { "local_umask", &tunable_local_umask }, 116 { "anon_umask", &tunable_anon_umask }, 117 { "ftp_data_port", &tunable_ftp_data_port }, 118 { "idle_session_timeout", &tunable_idle_session_timeout }, 119 { "data_connection_timeout", &tunable_data_connection_timeout }, 120 { "pasv_min_port", &tunable_pasv_min_port }, 121 { "pasv_max_port", &tunable_pasv_max_port }, 122 { "anon_max_rate", &tunable_anon_max_rate }, 123 { "local_max_rate", &tunable_local_max_rate }, 124 { "listen_port", &tunable_listen_port }, 125 { "max_clients", &tunable_max_clients }, 126 { "file_open_mode", &tunable_file_open_mode }, 127 { "max_per_ip", &tunable_max_per_ip }, 128 { "trans_chunk_size", &tunable_trans_chunk_size }, 129 { 0, 0 } 130}; 131 132static struct parseconf_str_setting 133{ 134 const char* p_setting_name; 135 const char** p_variable; 136} 137parseconf_str_array[] = 138{ 139 { "secure_chroot_dir", &tunable_secure_chroot_dir }, 140 { "ftp_username", &tunable_ftp_username }, 141 { "chown_username", &tunable_chown_username }, 142 { "xferlog_file", &tunable_xferlog_file }, 143 { "vsftpd_log_file", &tunable_vsftpd_log_file }, 144 { "message_file", &tunable_message_file }, 145 { "nopriv_user", &tunable_nopriv_user }, 146 { "ftpd_banner", &tunable_ftpd_banner }, 147 { "banned_email_file", &tunable_banned_email_file }, 148 { "chroot_list_file", &tunable_chroot_list_file }, 149 { "pam_service_name", &tunable_pam_service_name }, 150 { "guest_username", &tunable_guest_username }, 151 { "userlist_file", &tunable_userlist_file }, 152 { "anon_root", &tunable_anon_root }, 153 { "local_root", &tunable_local_root }, 154 { "banner_file", &tunable_banner_file }, 155 { "pasv_address", &tunable_pasv_address }, 156 { "listen_address", &tunable_listen_address }, 157 { "user_config_dir", &tunable_user_config_dir }, 158 { "listen_address6", &tunable_listen_address6 }, 159 { "cmds_allowed", &tunable_cmds_allowed }, 160 { "hide_file", &tunable_hide_file }, 161 { "deny_file", &tunable_deny_file }, 162 { "user_sub_token", &tunable_user_sub_token }, 163 { "email_password_file", &tunable_email_password_file }, 164 { "rsa_cert_file", &tunable_rsa_cert_file }, 165 { "dsa_cert_file", &tunable_dsa_cert_file }, 166 { "ssl_ciphers", &tunable_ssl_ciphers }, 167 { "local_charset", &tunable_local_charset }, // Jiahao 168 { "remote_charset", &tunable_remote_charset }, // Jiahao 169 { "rsa_private_key_file", &tunable_rsa_private_key_file }, 170 { "dsa_private_key_file", &tunable_dsa_private_key_file }, 171 { 0, 0 } 172}; 173 174void 175vsf_parseconf_load_file(const char* p_filename, int errs_fatal) 176{ 177 struct mystr config_file_str = INIT_MYSTR; 178 struct mystr config_setting_str = INIT_MYSTR; 179 struct mystr config_value_str = INIT_MYSTR; 180 unsigned int str_pos = 0; 181 int retval; 182 if (!p_filename) 183 { 184 p_filename = s_p_saved_filename; 185 } 186 else 187 { 188 if (s_p_saved_filename) 189 { 190 vsf_sysutil_free((char*)s_p_saved_filename); 191 } 192 s_p_saved_filename = vsf_sysutil_strdup(p_filename); 193 } 194 if (!p_filename) 195 { 196 bug("null filename in vsf_parseconf_load_file"); 197 } 198 if (!s_strings_copied) 199 { 200 s_strings_copied = 1; 201 /* A minor hack to make sure all strings are malloc()'ed so we can free 202 * them at some later date. Specifically handles strings embedded in the 203 * binary. 204 */ 205 copy_string_settings(); 206 } 207 retval = str_fileread(&config_file_str, p_filename, VSFTP_CONF_FILE_MAX); 208 if (vsf_sysutil_retval_is_error(retval)) 209 { 210 if (errs_fatal) 211 { 212 die2("cannot open config file:", p_filename); 213 } 214 else 215 { 216 return; 217 } 218 } 219 while (str_getline(&config_file_str, &config_setting_str, &str_pos)) 220 { 221 if (str_isempty(&config_setting_str) || 222 str_get_char_at(&config_setting_str, 0) == '#') 223 { 224 continue; 225 } 226 /* Split into name=value pair */ 227 str_split_char(&config_setting_str, &config_value_str, '='); 228 handle_config_setting(&config_setting_str, &config_value_str, errs_fatal); 229 } 230 str_free(&config_file_str); 231 str_free(&config_setting_str); 232 str_free(&config_value_str); 233} 234 235static void 236handle_config_setting(struct mystr* p_setting_str, struct mystr* p_value_str, 237 int errs_fatal) 238{ 239 /* Is it a string setting? */ 240 { 241 const struct parseconf_str_setting* p_str_setting = parseconf_str_array; 242 while (p_str_setting->p_setting_name != 0) 243 { 244 if (str_equal_text(p_setting_str, p_str_setting->p_setting_name)) 245 { 246 /* Got it */ 247 const char** p_curr_setting = p_str_setting->p_variable; 248 if (*p_curr_setting) 249 { 250 vsf_sysutil_free((char*)*p_curr_setting); 251 } 252 if (str_isempty(p_value_str)) 253 { 254 *p_curr_setting = 0; 255 } 256 else 257 { 258 *p_curr_setting = str_strdup(p_value_str); 259 } 260 return; 261 } 262 p_str_setting++; 263 } 264 } 265 if (str_isempty(p_value_str)) 266 { 267 if (errs_fatal) 268 { 269 die2("missing value in config file for: ", str_getbuf(p_setting_str)); 270 } 271 else 272 { 273 return; 274 } 275 } 276 /* Is it a boolean value? */ 277 { 278 const struct parseconf_bool_setting* p_bool_setting = parseconf_bool_array; 279 while (p_bool_setting->p_setting_name != 0) 280 { 281 if (str_equal_text(p_setting_str, p_bool_setting->p_setting_name)) 282 { 283 /* Got it */ 284 str_upper(p_value_str); 285 if (str_equal_text(p_value_str, "YES") || 286 str_equal_text(p_value_str, "TRUE") || 287 str_equal_text(p_value_str, "1")) 288 { 289 *(p_bool_setting->p_variable) = 1; 290 } 291 else if (str_equal_text(p_value_str, "NO") || 292 str_equal_text(p_value_str, "FALSE") || 293 str_equal_text(p_value_str, "0")) 294 { 295 *(p_bool_setting->p_variable) = 0; 296 } 297 else if (errs_fatal) 298 { 299 die2("bad bool value in config file for: ", 300 str_getbuf(p_setting_str)); 301 } 302 return; 303 } 304 p_bool_setting++; 305 } 306 } 307 /* Is it an unsigned integer setting? */ 308 { 309 const struct parseconf_uint_setting* p_uint_setting = parseconf_uint_array; 310 while (p_uint_setting->p_setting_name != 0) 311 { 312 if (str_equal_text(p_setting_str, p_uint_setting->p_setting_name)) 313 { 314 /* Got it */ 315 /* If the value starts with 0, assume it's an octal value */ 316 if (!str_isempty(p_value_str) && 317 str_get_char_at(p_value_str, 0) == '0') 318 { 319 *(p_uint_setting->p_variable) = str_octal_to_uint(p_value_str); 320 } 321 else 322 { 323 *(p_uint_setting->p_variable) = str_atoi(p_value_str); 324 } 325 return; 326 } 327 p_uint_setting++; 328 } 329 } 330 if (errs_fatal) 331 { 332 die2("unrecognised variable in config file: ", str_getbuf(p_setting_str)); 333 } 334} 335 336static void 337copy_string_settings(void) 338{ 339 const struct parseconf_str_setting* p_str_setting = parseconf_str_array; 340 while (p_str_setting->p_setting_name != 0) 341 { 342 if (*p_str_setting->p_variable != 0) 343 { 344 *p_str_setting->p_variable = 345 vsf_sysutil_strdup(*p_str_setting->p_variable); 346 } 347 p_str_setting++; 348 } 349} 350 351