1 /* $NetBSD: extern.h,v 1.54 2005/08/24 15:51:41 ginsbach Exp $ */ 2 3 /*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)extern.h 8.2 (Berkeley) 4/4/94 32 */ 33 34 /*- 35 * Copyright (c) 1997-2005 The NetBSD Foundation, Inc. 36 * All rights reserved. 37 * 38 * This code is derived from software contributed to The NetBSD Foundation 39 * by Luke Mewburn. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by the NetBSD 52 * Foundation, Inc. and its contributors. 53 * 4. Neither the name of The NetBSD Foundation nor the names of its 54 * contributors may be used to endorse or promote products derived 55 * from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 58 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 59 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 60 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 61 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 62 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 63 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 64 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 65 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 66 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 67 * POSSIBILITY OF SUCH DAMAGE. 68 */ 69 70 /* 71 * Copyright (C) 1997 and 1998 WIDE Project. 72 * All rights reserved. 73 * 74 * Redistribution and use in source and binary forms, with or without 75 * modification, are permitted provided that the following conditions 76 * are met: 77 * 1. Redistributions of source code must retain the above copyright 78 * notice, this list of conditions and the following disclaimer. 79 * 2. Redistributions in binary form must reproduce the above copyright 80 * notice, this list of conditions and the following disclaimer in the 81 * documentation and/or other materials provided with the distribution. 82 * 3. Neither the name of the project nor the names of its contributors 83 * may be used to endorse or promote products derived from this software 84 * without specific prior written permission. 85 * 86 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 87 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 88 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 89 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 90 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 91 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 92 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 93 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 94 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 95 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 96 * SUCH DAMAGE. 97 */ 98 99 #ifdef NO_LONG_LONG 100 # define LLF "%ld" 101 # define LLFP(x) "%" x "ld" 102 # define LLT long 103 # define ULLF "%lu" 104 # define ULLFP(x) "%" x "lu" 105 # define ULLT unsigned long 106 # define STRTOLL(x,y,z) strtol(x,y,z) 107 # define LLTMIN LONG_MIN 108 # define LLTMAX LONG_MAX 109 #else 110 # define LLF "%lld" 111 # define LLFP(x) "%" x "lld" 112 # define LLT long long 113 # define ULLF "%llu" 114 # define ULLFP(x) "%" x "llu" 115 # define ULLT unsigned long long 116 # define STRTOLL(x,y,z) strtoll(x,y,z) 117 # define LLTMIN LLONG_MIN 118 # define LLTMAX LLONG_MAX 119 #endif 120 121 #define FTP_BUFLEN 512 122 123 void abor(void); 124 void blkfree(char **); 125 void closedataconn(FILE *); 126 char *conffilename(const char *); 127 char **copyblk(char **); 128 void count_users(void); 129 void cprintf(FILE *, const char *, ...) 130 __attribute__((__format__(__printf__, 2, 3))); 131 void cwd(const char *); 132 FILE *dataconn(const char *, off_t, const char *); 133 void delete(const char *); 134 int display_file(const char *, int); 135 char **do_conversion(const char *); 136 void dologout(int); 137 void fatal(const char *); 138 void feat(void); 139 void format_path(char *, const char *); 140 int ftpd_pclose(FILE *); 141 FILE *ftpd_popen(char *[], const char *, int); 142 char *getline(char *, int, FILE *); 143 void init_curclass(void); 144 void logxfer(const char *, off_t, const char *, const char *, 145 const struct timeval *, const char *); 146 struct tab *lookup(struct tab *, const char *); 147 void makedir(const char *); 148 void mlsd(const char *); 149 void mlst(const char *); 150 void opts(const char *); 151 void parse_conf(const char *); 152 void pass(const char *); 153 void passive(void); 154 int lpsvproto2af(int); 155 int af2lpsvproto(int); 156 int epsvproto2af(int); 157 int af2epsvproto(int); 158 void long_passive(char *, int); 159 int extended_port(const char *); 160 void epsv_protounsupp(const char *); 161 void perror_reply(int, const char *); 162 void pwd(void); 163 void removedir(const char *); 164 void renamecmd(const char *, const char *); 165 char *renamefrom(const char *); 166 void reply(int, const char *, ...) 167 __attribute__((__format__(__printf__, 2, 3))); 168 void retrieve(char *[], const char *); 169 void send_file_list(const char *); 170 void show_chdir_messages(int); 171 void sizecmd(const char *); 172 void statcmd(void); 173 void statfilecmd(const char *); 174 void statxfer(void); 175 void store(const char *, const char *, int); 176 void user(const char *); 177 char *xstrdup(const char *); 178 void yyerror(char *); 179 180 #ifdef SUPPORT_UTMP 181 struct utmp; 182 183 void ftpd_initwtmp(void); 184 void ftpd_logwtmp(const char *, const char *, const char *); 185 void ftpd_login(const struct utmp *); 186 int ftpd_logout(const char *); 187 #endif 188 189 #ifdef SUPPORT_UTMPX 190 struct utmpx; 191 struct sockinet; 192 193 void ftpd_initwtmpx(void); 194 void ftpd_logwtmpx(const char *, const char *, const char *, 195 struct sockinet *, int, int); 196 void ftpd_loginx(const struct utmpx *); 197 int ftpd_logoutx(const char *, int, int); 198 #endif 199 200 #include <netinet/in.h> 201 202 #if defined(__NetBSD__) 203 # define HAVE_SETPROCTITLE 1 204 # define HAVE_SOCKADDR_SA_LEN 1 205 #endif 206 207 struct sockinet { 208 union sockunion { 209 struct sockaddr_in su_sin; 210 #ifdef INET6 211 struct sockaddr_in6 su_sin6; 212 #endif 213 } si_su; 214 #if !HAVE_SOCKADDR_SA_LEN 215 int si_len; 216 #endif 217 }; 218 219 #if !HAVE_SOCKADDR_SA_LEN 220 # define su_len si_len 221 #else 222 # define su_len si_su.su_sin.sin_len 223 #endif 224 #define su_addr si_su.su_sin.sin_addr 225 #define su_family si_su.su_sin.sin_family 226 #define su_port si_su.su_sin.sin_port 227 #ifdef INET6 228 # define su_6addr si_su.su_sin6.sin6_addr 229 # define su_scope_id si_su.su_sin6.sin6_scope_id 230 #endif 231 232 struct tab { 233 char *name; 234 short token; 235 short state; 236 short flags; /* 1 if command implemented, 2 if has options, 237 4 if can occur OOB */ 238 char *help; 239 char *options; 240 }; 241 242 struct ftpconv { 243 struct ftpconv *next; 244 char *suffix; /* Suffix of requested name */ 245 char *types; /* Valid file types */ 246 char *disable; /* File to disable conversions */ 247 char *command; /* Command to do the conversion */ 248 }; 249 250 typedef enum { 251 CLASS_GUEST, 252 CLASS_CHROOT, 253 CLASS_REAL 254 } class_ft; 255 256 typedef enum { 257 FLAG_checkportcmd = 1<<0, /* Check port commands */ 258 FLAG_denyquick = 1<<1, /* Check ftpusers(5) before PASS */ 259 FLAG_hidesymlinks = 1<<2, /* For symbolic links, list the file 260 or directory the link references 261 rather than the link itself */ 262 FLAG_modify = 1<<3, /* Allow CHMOD, DELE, MKD, RMD, RNFR, 263 UMASK */ 264 FLAG_passive = 1<<4, /* Allow PASV mode */ 265 FLAG_private = 1<<5, /* Don't publish class info in STAT */ 266 FLAG_sanenames = 1<<6, /* Restrict names of uploaded files */ 267 FLAG_upload = 1<<7, /* As per modify, but also allow 268 APPE, STOR, STOU */ 269 } classflag_t; 270 271 #define CURCLASS_FLAGS_SET(x) (curclass.flags |= (FLAG_ ## x)) 272 #define CURCLASS_FLAGS_CLR(x) (curclass.flags &= ~(FLAG_ ## x)) 273 #define CURCLASS_FLAGS_ISSET(x) (curclass.flags & (FLAG_ ## x)) 274 275 struct ftpclass { 276 struct sockinet advertise; /* PASV address to advertise as */ 277 char *chroot; /* Directory to chroot(2) to at login */ 278 char *classname; /* Current class */ 279 struct ftpconv *conversions; /* List of conversions */ 280 char *display; /* File to display upon chdir */ 281 char *homedir; /* Directory to chdir(2) to at login */ 282 classflag_t flags; /* Flags; see classflag_t above */ 283 LLT limit; /* Max connections (-1 = unlimited) */ 284 char *limitfile; /* File to display if limit reached */ 285 LLT maxfilesize; /* Maximum file size of uploads */ 286 LLT maxrateget; /* Maximum get transfer rate throttle */ 287 LLT maxrateput; /* Maximum put transfer rate throttle */ 288 LLT maxtimeout; /* Maximum permitted timeout */ 289 char *motd; /* MotD file to display after login */ 290 char *notify; /* Files to notify about upon chdir */ 291 LLT portmin; /* Minumum port for passive mode */ 292 LLT portmax; /* Maximum port for passive mode */ 293 LLT rateget; /* Get (RETR) transfer rate throttle */ 294 LLT rateput; /* Put (STOR) transfer rate throttle */ 295 LLT timeout; /* Default timeout */ 296 class_ft type; /* Class type */ 297 mode_t umask; /* Umask to use */ 298 LLT mmapsize; /* mmap window size */ 299 LLT readsize; /* data read size */ 300 LLT writesize; /* data write size */ 301 LLT recvbufsize; /* SO_RCVBUF size */ 302 LLT sendbufsize; /* SO_SNDBUF size */ 303 LLT sendlowat; /* SO_SNDLOWAT size */ 304 }; 305 306 extern void ftp_loop(void) __attribute__ ((noreturn)); 307 extern void ftp_handle_line(char *); 308 309 #ifndef GLOBAL 310 #define GLOBAL extern 311 #endif 312 313 314 GLOBAL struct sockinet ctrl_addr; 315 GLOBAL struct sockinet data_dest; 316 GLOBAL struct sockinet data_source; 317 GLOBAL struct sockinet his_addr; 318 GLOBAL struct sockinet pasv_addr; 319 GLOBAL int connections; 320 GLOBAL struct ftpclass curclass; 321 GLOBAL int debug; 322 GLOBAL char *emailaddr; 323 GLOBAL int form; 324 GLOBAL int gidcount; /* number of entries in gidlist[] */ 325 GLOBAL gid_t *gidlist; 326 GLOBAL int hasyyerrored; 327 GLOBAL char hostname[MAXHOSTNAMELEN+1]; 328 GLOBAL char homedir[MAXPATHLEN]; 329 #ifdef KERBEROS5 330 GLOBAL krb5_context kcontext; 331 #endif 332 GLOBAL int logged_in; 333 GLOBAL int logging; 334 GLOBAL int pdata; /* for passive mode */ 335 #if HAVE_SETPROCTITLE 336 GLOBAL char proctitle[BUFSIZ]; /* initial part of title */ 337 #endif 338 GLOBAL struct passwd *pw; 339 GLOBAL int quietmessages; 340 GLOBAL char remotehost[MAXHOSTNAMELEN+1]; 341 GLOBAL off_t restart_point; 342 GLOBAL char tmpline[FTP_BUFLEN]; 343 GLOBAL int type; 344 GLOBAL int usedefault; /* for data transfers */ 345 GLOBAL const char *version; 346 GLOBAL int is_oob; 347 348 /* total file data bytes */ 349 GLOBAL off_t total_data_in, total_data_out, total_data; 350 /* total number of data files */ 351 GLOBAL off_t total_files_in, total_files_out, total_files; 352 /* total bytes */ 353 GLOBAL off_t total_bytes_in, total_bytes_out, total_bytes; 354 /* total number of xfers */ 355 GLOBAL off_t total_xfers_in, total_xfers_out, total_xfers; 356 357 extern struct tab cmdtab[]; 358 359 #define INTERNAL_LS "/bin/ls" 360 361 362 #define CMD_IMPLEMENTED(x) ((x)->flags != 0) 363 #define CMD_HAS_OPTIONS(x) ((x)->flags & 0x2) 364 #define CMD_OOB(x) ((x)->flags & 0x4) 365 366 #define CPUTC(c, f) do { \ 367 putc(c, f); total_bytes++; total_bytes_out++; \ 368 } while (0); 369 370 #define CURCLASSTYPE curclass.type == CLASS_GUEST ? "GUEST" : \ 371 curclass.type == CLASS_CHROOT ? "CHROOT" : \ 372 curclass.type == CLASS_REAL ? "REAL" : \ 373 "<unknown>" 374 375 #define ISDOTDIR(x) (x[0] == '.' && x[1] == '\0') 376 #define ISDOTDOTDIR(x) (x[0] == '.' && x[1] == '.' && x[2] == '\0') 377 378 #define EMPTYSTR(p) ((p) == NULL || *(p) == '\0') 379 #define NEXTWORD(P, W) do { \ 380 (W) = strsep(&(P), " \t"); \ 381 } while ((W) != NULL && *(W) == '\0') 382 #define PLURAL(s) ((s) == 1 ? "" : "s") 383 #define REASSIGN(X,Y) do { if (X) free(X); (X)=(Y); } while (/*CONSTCOND*/0) 384 385 #ifndef IPPORT_ANONMAX 386 # define IPPORT_ANONMAX 65535 387 #endif 388