1 /* $NetBSD: extern.h,v 1.43 2001/12/04 13:54:12 lukem 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)extern.h 8.2 (Berkeley) 4/4/94 36 */ 37 38 /*- 39 * Copyright (c) 1997-2001 The NetBSD Foundation, Inc. 40 * All rights reserved. 41 * 42 * This code is derived from software contributed to The NetBSD Foundation 43 * by Luke Mewburn. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed by the NetBSD 56 * Foundation, Inc. and its contributors. 57 * 4. Neither the name of The NetBSD Foundation nor the names of its 58 * contributors may be used to endorse or promote products derived 59 * from this software without specific prior written permission. 60 * 61 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 62 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 63 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 64 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 65 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 66 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 67 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 68 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 69 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 70 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 71 * POSSIBILITY OF SUCH DAMAGE. 72 */ 73 74 /* 75 * Copyright (C) 1997 and 1998 WIDE Project. 76 * All rights reserved. 77 * 78 * Redistribution and use in source and binary forms, with or without 79 * modification, are permitted provided that the following conditions 80 * are met: 81 * 1. Redistributions of source code must retain the above copyright 82 * notice, this list of conditions and the following disclaimer. 83 * 2. Redistributions in binary form must reproduce the above copyright 84 * notice, this list of conditions and the following disclaimer in the 85 * documentation and/or other materials provided with the distribution. 86 * 3. Neither the name of the project nor the names of its contributors 87 * may be used to endorse or promote products derived from this software 88 * without specific prior written permission. 89 * 90 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 91 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 92 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 93 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 94 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 95 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 96 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 97 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 98 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 99 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 100 * SUCH DAMAGE. 101 */ 102 103 #ifdef NO_LONG_LONG 104 # define LLF "%ld" 105 # define LLFP(x) "%" x "ld" 106 # define LLT long 107 # define ULLF "%lu" 108 # define ULLFP(x) "%" x "lu" 109 # define ULLT unsigned long 110 # define STRTOLL(x,y,z) strtol(x,y,z) 111 #else 112 # define LLF "%lld" 113 # define LLFP(x) "%" x "lld" 114 # define LLT long long 115 # define ULLF "%llu" 116 # define ULLFP(x) "%" x "llu" 117 # define ULLT unsigned long long 118 # define STRTOLL(x,y,z) strtoll(x,y,z) 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 #if 0 147 void logwtmp(const char *, const char *, const char *); 148 #endif 149 struct tab *lookup(struct tab *, const char *); 150 void makedir(const char *); 151 void mlsd(const char *); 152 void mlst(const char *); 153 void opts(const char *); 154 void parse_conf(const char *); 155 void pass(const char *); 156 void passive(void); 157 int lpsvproto2af(int); 158 int af2lpsvproto(int); 159 int epsvproto2af(int); 160 int af2epsvproto(int); 161 void long_passive(char *, int); 162 int extended_port(const char *); 163 void epsv_protounsupp(const char *); 164 void perror_reply(int, const char *); 165 void pwd(void); 166 void removedir(const char *); 167 void renamecmd(const char *, const char *); 168 char *renamefrom(const char *); 169 void reply(int, const char *, ...) 170 __attribute__((__format__(__printf__, 2, 3))); 171 void retrieve(char *[], const char *); 172 void send_file_list(const char *); 173 void show_chdir_messages(int); 174 void sizecmd(const char *); 175 void statcmd(void); 176 void statfilecmd(const char *); 177 void statxfer(void); 178 void store(const char *, const char *, int); 179 LLT strsuftoll(const char *); 180 void user(const char *); 181 char *xstrdup(const char *); 182 void yyerror(char *); 183 184 #include <netinet/in.h> 185 186 #if defined(__NetBSD__) 187 # define HAVE_SETPROCTITLE 1 188 # define HAVE_SOCKADDR_SA_LEN 1 189 #endif 190 191 struct sockinet { 192 union sockunion { 193 struct sockaddr_in su_sin; 194 #ifdef INET6 195 struct sockaddr_in6 su_sin6; 196 #endif 197 } si_su; 198 #if !HAVE_SOCKADDR_SA_LEN 199 int si_len; 200 #endif 201 }; 202 203 #if !HAVE_SOCKADDR_SA_LEN 204 # define su_len si_len 205 #else 206 # define su_len si_su.su_sin.sin_len 207 #endif 208 #define su_addr si_su.su_sin.sin_addr 209 #define su_family si_su.su_sin.sin_family 210 #define su_port si_su.su_sin.sin_port 211 #ifdef INET6 212 # define su_6addr si_su.su_sin6.sin6_addr 213 # define su_scope_id si_su.su_sin6.sin6_scope_id 214 #endif 215 216 struct tab { 217 char *name; 218 short token; 219 short state; 220 short flags; /* 1 if command implemented, 2 if has options, 221 4 if can occur OOB */ 222 char *help; 223 char *options; 224 }; 225 226 struct ftpconv { 227 struct ftpconv *next; 228 char *suffix; /* Suffix of requested name */ 229 char *types; /* Valid file types */ 230 char *disable; /* File to disable conversions */ 231 char *command; /* Command to do the conversion */ 232 }; 233 234 typedef enum { 235 CLASS_GUEST, 236 CLASS_CHROOT, 237 CLASS_REAL 238 } class_ft; 239 240 typedef enum { 241 FLAG_checkportcmd = 1<<0, /* Check port commands */ 242 FLAG_denyquick = 1<<1, /* Check ftpusers(5) before PASS */ 243 FLAG_modify = 1<<2, /* Allow CHMOD, DELE, MKD, RMD, RNFR, 244 UMASK */ 245 FLAG_passive = 1<<3, /* Allow PASV mode */ 246 FLAG_private = 1<<4, /* Don't publish class info in STAT */ 247 FLAG_sanenames = 1<<5, /* Restrict names of uploaded files */ 248 FLAG_upload = 1<<6, /* As per modify, but also allow 249 APPE, STOR, STOU */ 250 } classflag_t; 251 252 #define CURCLASS_FLAGS_SET(x) (curclass.flags |= (FLAG_ ## x)) 253 #define CURCLASS_FLAGS_CLR(x) (curclass.flags &= ~(FLAG_ ## x)) 254 #define CURCLASS_FLAGS_ISSET(x) (curclass.flags & (FLAG_ ## x)) 255 256 struct ftpclass { 257 struct sockinet advertise; /* PASV address to advertise as */ 258 char *chroot; /* Directory to chroot(2) to at login */ 259 char *classname; /* Current class */ 260 struct ftpconv *conversions; /* List of conversions */ 261 char *display; /* File to display upon chdir */ 262 char *homedir; /* Directory to chdir(2) to at login */ 263 classflag_t flags; /* Flags; see classflag_t above */ 264 int limit; /* Max connections (-1 = unlimited) */ 265 char *limitfile; /* File to display if limit reached */ 266 LLT maxfilesize; /* Maximum file size of uploads */ 267 LLT maxrateget; /* Maximum get transfer rate throttle */ 268 LLT maxrateput; /* Maximum put transfer rate throttle */ 269 unsigned int maxtimeout; /* Maximum permitted timeout */ 270 char *motd; /* MotD file to display after login */ 271 char *notify; /* Files to notify about upon chdir */ 272 int portmin; /* Minumum port for passive mode */ 273 int portmax; /* Maximum port for passive mode */ 274 LLT rateget; /* Get (RETR) transfer rate throttle */ 275 LLT rateput; /* Put (STOR) transfer rate throttle */ 276 unsigned int timeout; /* Default timeout */ 277 class_ft type; /* Class type */ 278 mode_t umask; /* Umask to use */ 279 }; 280 281 extern void ftp_loop(void) __attribute__ ((noreturn)); 282 extern void ftp_handle_line(char *); 283 284 #ifndef GLOBAL 285 #define GLOBAL extern 286 #endif 287 288 289 GLOBAL struct sockinet ctrl_addr; 290 GLOBAL struct sockinet data_dest; 291 GLOBAL struct sockinet data_source; 292 GLOBAL struct sockinet his_addr; 293 GLOBAL struct sockinet pasv_addr; 294 GLOBAL int connections; 295 GLOBAL struct ftpclass curclass; 296 GLOBAL int debug; 297 GLOBAL jmp_buf errcatch; 298 GLOBAL char *emailaddr; 299 GLOBAL int form; 300 GLOBAL int gidcount; /* number of entries in gidlist[] */ 301 GLOBAL gid_t gidlist[NGROUPS_MAX]; 302 GLOBAL int hasyyerrored; 303 GLOBAL char hostname[MAXHOSTNAMELEN+1]; 304 GLOBAL char homedir[MAXPATHLEN]; 305 #ifdef KERBEROS5 306 GLOBAL krb5_context kcontext; 307 #endif 308 GLOBAL int logged_in; 309 GLOBAL int logging; 310 GLOBAL int pdata; /* for passive mode */ 311 #if HAVE_SETPROCTITLE 312 GLOBAL char proctitle[BUFSIZ]; /* initial part of title */ 313 #endif 314 GLOBAL struct passwd *pw; 315 GLOBAL int quietmessages; 316 GLOBAL char remotehost[MAXHOSTNAMELEN+1]; 317 GLOBAL off_t restart_point; 318 GLOBAL char tmpline[FTP_BUFLEN]; 319 GLOBAL sig_atomic_t transflag; 320 GLOBAL int type; 321 GLOBAL int usedefault; /* for data transfers */ 322 GLOBAL const char *version; 323 GLOBAL int is_oob; 324 325 /* total file data bytes */ 326 GLOBAL off_t total_data_in, total_data_out, total_data; 327 /* total number of data files */ 328 GLOBAL off_t total_files_in, total_files_out, total_files; 329 /* total bytes */ 330 GLOBAL off_t total_bytes_in, total_bytes_out, total_bytes; 331 /* total number of xfers */ 332 GLOBAL off_t total_xfers_in, total_xfers_out, total_xfers; 333 334 extern struct tab cmdtab[]; 335 336 #define INTERNAL_LS "/bin/ls" 337 338 339 #define CMD_IMPLEMENTED(x) ((x)->flags != 0) 340 #define CMD_HAS_OPTIONS(x) ((x)->flags & 0x2) 341 #define CMD_OOB(x) ((x)->flags & 0x4) 342 343 #define CPUTC(c, f) do { \ 344 putc(c, f); total_bytes++; total_bytes_out++; \ 345 } while (0); 346 347 #define CURCLASSTYPE curclass.type == CLASS_GUEST ? "GUEST" : \ 348 curclass.type == CLASS_CHROOT ? "CHROOT" : \ 349 curclass.type == CLASS_REAL ? "REAL" : \ 350 "<unknown>" 351 352 #define ISDOTDIR(x) (x[0] == '.' && x[1] == '\0') 353 #define ISDOTDOTDIR(x) (x[0] == '.' && x[1] == '.' && x[2] == '\0') 354 355 #define EMPTYSTR(p) ((p) == NULL || *(p) == '\0') 356 #define NEXTWORD(P, W) do { \ 357 (W) = strsep(&(P), " \t"); \ 358 } while ((W) != NULL && *(W) == '\0') 359 #define PLURAL(s) ((s) == 1 ? "" : "s") 360 #define REASSIGN(X,Y) do { if (X) free(X); (X)=(Y); } while (/*CONSTCOND*/0) 361 362 #ifndef IPPORT_ANONMAX 363 # define IPPORT_ANONMAX 65535 364 #endif 365