1/* $NetBSD: extern.h,v 1.66 2022/04/17 21:24:53 andvar 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) 1997-2009 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 * 50 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 51 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 52 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 53 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 54 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 55 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 56 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 57 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 58 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 59 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 60 * POSSIBILITY OF SUCH DAMAGE. 61 */ 62 63/* 64 * Copyright (C) 1997 and 1998 WIDE Project. 65 * All rights reserved. 66 * 67 * Redistribution and use in source and binary forms, with or without 68 * modification, are permitted provided that the following conditions 69 * are met: 70 * 1. Redistributions of source code must retain the above copyright 71 * notice, this list of conditions and the following disclaimer. 72 * 2. Redistributions in binary form must reproduce the above copyright 73 * notice, this list of conditions and the following disclaimer in the 74 * documentation and/or other materials provided with the distribution. 75 * 3. Neither the name of the project nor the names of its contributors 76 * may be used to endorse or promote products derived from this software 77 * without specific prior written permission. 78 * 79 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 80 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 81 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 82 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 83 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 84 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 85 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 86 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 87 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 88 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 89 * SUCH DAMAGE. 90 */ 91 92#ifdef NO_LONG_LONG 93# define LLF "%ld" 94# define LLFP(x) "%" x "ld" 95# define LLT long 96# define ULLF "%lu" 97# define ULLFP(x) "%" x "lu" 98# define ULLT unsigned long 99# define STRTOLL(x,y,z) strtol(x,y,z) 100# define LLTMIN LONG_MIN 101# define LLTMAX LONG_MAX 102#else 103# define LLF "%lld" 104# define LLFP(x) "%" x "lld" 105# define LLT long long 106# define ULLF "%llu" 107# define ULLFP(x) "%" x "llu" 108# define ULLT unsigned long long 109# define STRTOLL(x,y,z) strtoll(x,y,z) 110# define LLTMIN LLONG_MIN 111# define LLTMAX LLONG_MAX 112#endif 113 114#define FTP_BUFLEN 512 115 116void abor(void); 117void closedataconn(FILE *); 118char *conffilename(const char *); 119void count_users(void); 120void cprintf(FILE *, const char *, ...) 121 __printflike(2, 3); 122void cwd(const char *); 123FILE *dataconn(const char *, off_t, const char *); 124void delete(const char *); 125int display_file(const char *, int); 126const char **do_conversion(const char *); 127__dead void dologout(int); 128__dead void fatal(const char *); 129void feat(void); 130void format_path(char *, const char *); 131int ftpd_pclose(FILE *); 132FILE *ftpd_popen(const char *[], const char *, int); 133int get_line(char *, int, FILE *); 134void init_curclass(void); 135void logxfer(const char *, off_t, const char *, const char *, 136 const struct timeval *, const char *); 137struct tab *lookup(struct tab *, const char *); 138void makedir(const char *); 139void mlsd(const char *); 140void mlst(const char *); 141void opts(const char *); 142void parse_conf(const char *); 143void pass(const char *); 144void passive(void); 145int lpsvproto2af(int); 146int af2lpsvproto(int); 147int epsvproto2af(int); 148int af2epsvproto(int); 149void long_passive(const char *, int); 150int extended_port(const char *); 151void epsv_protounsupp(const char *); 152void perror_reply(int, const char *); 153void pwd(void); 154void removedir(const char *); 155void renamecmd(const char *, const char *); 156char *renamefrom(const char *); 157void reply(int, const char *, ...) 158 __printflike(2, 3); 159void retrieve(const char *[], const char *); 160void send_file_list(const char *); 161void show_chdir_messages(int); 162void sizecmd(const char *); 163void statcmd(void); 164void statfilecmd(const char *); 165void statxfer(void); 166void store(const char *, const char *, int); 167void user(const char *); 168char *ftpd_strdup(const char *); 169void yyerror(const char *); 170 171#ifdef SUPPORT_UTMP 172struct utmp; 173 174void ftpd_initwtmp(void); 175void ftpd_logwtmp(const char *, const char *, const char *); 176void ftpd_login(const struct utmp *); 177int ftpd_logout(const char *); 178#endif 179 180#ifdef SUPPORT_UTMPX 181struct utmpx; 182struct sockinet; 183 184void ftpd_initwtmpx(void); 185void ftpd_logwtmpx(const char *, const char *, const char *, 186 struct sockinet *, int, int); 187void ftpd_loginx(const struct utmpx *); 188int ftpd_logoutx(const char *, int, int); 189#endif 190 191#include <netinet/in.h> 192 193#if defined(__NetBSD__) 194# define HAVE_SETPROCTITLE 1 195# define HAVE_STRUCT_SOCKADDR_SA_LEN 1 196# define HAVE_SOCKADDR_SNPRINTF 1 197#endif 198 199struct sockinet { 200 union sockunion { 201 struct sockaddr_in su_sin; 202#ifdef INET6 203 struct sockaddr_in6 su_sin6; 204#endif 205 } si_su; 206#if !defined(HAVE_STRUCT_SOCKADDR_SA_LEN) 207 int si_len; 208#endif 209}; 210 211#if !defined(HAVE_STRUCT_SOCKADDR_SA_LEN) 212# define su_len si_len 213#else 214# define su_len si_su.su_sin.sin_len 215#endif 216#define su_addr si_su.su_sin.sin_addr 217#define su_family si_su.su_sin.sin_family 218#define su_port si_su.su_sin.sin_port 219#ifdef INET6 220# define su_6addr si_su.su_sin6.sin6_addr 221# define su_scope_id si_su.su_sin6.sin6_scope_id 222#endif 223 224struct tab { 225 const char *name; 226 short token; 227 short state; 228 short flags; /* 1 if command implemented, 2 if has options, 229 4 if can occur OOB */ 230 const char *help; 231 char *options; 232}; 233 234struct ftpconv { 235 struct ftpconv *next; 236 char *suffix; /* Suffix of requested name */ 237 char *types; /* Valid file types */ 238 char *disable; /* File to disable conversions */ 239 char *command; /* Command to do the conversion */ 240}; 241 242typedef enum { 243 CLASS_GUEST, 244 CLASS_CHROOT, 245 CLASS_REAL 246} class_ft; 247 248typedef enum { 249 FLAG_checkportcmd = 1<<0, /* Check port commands */ 250 FLAG_denyquick = 1<<1, /* Check ftpusers(5) before PASS */ 251 FLAG_hidesymlinks = 1<<2, /* For symbolic links, list the file 252 or directory the link references 253 rather than the link itself */ 254 FLAG_modify = 1<<3, /* Allow CHMOD, DELE, MKD, RMD, RNFR, 255 UMASK */ 256 FLAG_passive = 1<<4, /* Allow PASV mode */ 257 FLAG_private = 1<<5, /* Don't publish class info in STAT */ 258 FLAG_sanenames = 1<<6, /* Restrict names of uploaded files */ 259 FLAG_upload = 1<<7, /* As per modify, but also allow 260 APPE, STOR, STOU */ 261} classflag_t; 262 263#define CURCLASS_FLAGS_SET(x) (curclass.flags |= (FLAG_ ## x)) 264#define CURCLASS_FLAGS_CLR(x) (curclass.flags &= ~(FLAG_ ## x)) 265#define CURCLASS_FLAGS_ISSET(x) (curclass.flags & (FLAG_ ## x)) 266 267struct ftpclass { 268 struct sockinet advertise; /* PASV address to advertise as */ 269 char *chroot; /* Directory to chroot(2) to at login */ 270 char *classname; /* Current class */ 271 struct ftpconv *conversions; /* List of conversions */ 272 char *display; /* File to display upon chdir */ 273 char *homedir; /* Directory to chdir(2) to at login */ 274 classflag_t flags; /* Flags; see classflag_t above */ 275 LLT limit; /* Max connections (-1 = unlimited) */ 276 char *limitfile; /* File to display if limit reached */ 277 LLT maxfilesize; /* Maximum file size of uploads */ 278 LLT maxrateget; /* Maximum get transfer rate throttle */ 279 LLT maxrateput; /* Maximum put transfer rate throttle */ 280 LLT maxtimeout; /* Maximum permitted timeout */ 281 char *motd; /* MotD file to display after login */ 282 char *notify; /* Files to notify about upon chdir */ 283 LLT portmin; /* Minimum port for passive mode */ 284 LLT portmax; /* Maximum port for passive mode */ 285 LLT rateget; /* Get (RETR) transfer rate throttle */ 286 LLT rateput; /* Put (STOR) transfer rate throttle */ 287 LLT timeout; /* Default timeout */ 288 class_ft type; /* Class type */ 289 mode_t umask; /* Umask to use */ 290 LLT mmapsize; /* mmap window size */ 291 LLT readsize; /* data read size */ 292 LLT writesize; /* data write size */ 293 LLT recvbufsize; /* SO_RCVBUF size */ 294 LLT sendbufsize; /* SO_SNDBUF size */ 295 LLT sendlowat; /* SO_SNDLOWAT size */ 296}; 297 298__dead extern void ftp_loop(void); 299extern void ftp_handle_line(char *); 300 301#ifndef GLOBAL 302#define GLOBAL extern 303#endif 304 305 306GLOBAL struct sockinet ctrl_addr; 307GLOBAL struct sockinet data_dest; 308GLOBAL struct sockinet data_source; 309GLOBAL struct sockinet his_addr; 310GLOBAL struct sockinet pasv_addr; 311GLOBAL int connections; 312GLOBAL struct ftpclass curclass; 313GLOBAL int ftpd_debug; 314GLOBAL char *emailaddr; 315GLOBAL int form; 316GLOBAL int gidcount; /* number of entries in gidlist[] */ 317GLOBAL gid_t *gidlist; 318GLOBAL int hasyyerrored; 319GLOBAL char hostname[MAXHOSTNAMELEN+1]; 320GLOBAL char homedir[MAXPATHLEN]; 321#ifdef KERBEROS5 322GLOBAL krb5_context kcontext; 323#endif 324GLOBAL int logged_in; 325GLOBAL int logging; 326GLOBAL int pdata; /* for passive mode */ 327#if defined(HAVE_SETPROCTITLE) 328GLOBAL char proctitle[BUFSIZ]; /* initial part of title */ 329#endif 330GLOBAL struct passwd *pw; 331GLOBAL int quietmessages; 332GLOBAL char remotehost[MAXHOSTNAMELEN+1]; 333GLOBAL char remoteloghost[2 * MAXHOSTNAMELEN + 4]; 334GLOBAL off_t restart_point; 335GLOBAL char tmpline[FTP_BUFLEN]; 336GLOBAL int type; 337GLOBAL int usedefault; /* for data transfers */ 338GLOBAL const char *version; 339GLOBAL int is_oob; 340 341 /* total file data bytes */ 342GLOBAL off_t total_data_in, total_data_out, total_data; 343 /* total number of data files */ 344GLOBAL off_t total_files_in, total_files_out, total_files; 345 /* total bytes */ 346GLOBAL off_t total_bytes_in, total_bytes_out, total_bytes; 347 /* total number of xfers */ 348GLOBAL off_t total_xfers_in, total_xfers_out, total_xfers; 349 350extern struct tab cmdtab[]; 351 352#define INTERNAL_LS "/bin/ls" 353 354 355#define CMD_IMPLEMENTED(x) ((x)->flags != 0) 356#define CMD_HAS_OPTIONS(x) ((x)->flags & 0x2) 357#define CMD_OOB(x) ((x)->flags & 0x4) 358 359#define CPUTC(c, f) do { \ 360 putc(c, f); total_bytes++; total_bytes_out++; \ 361 } while (0) 362 363#define CURCLASSTYPE curclass.type == CLASS_GUEST ? "GUEST" : \ 364 curclass.type == CLASS_CHROOT ? "CHROOT" : \ 365 curclass.type == CLASS_REAL ? "REAL" : \ 366 "<unknown>" 367 368#define ISDOTDIR(x) (x[0] == '.' && x[1] == '\0') 369#define ISDOTDOTDIR(x) (x[0] == '.' && x[1] == '.' && x[2] == '\0') 370 371#define EMPTYSTR(p) ((p) == NULL || *(p) == '\0') 372#define NEXTWORD(P, W) do { \ 373 (W) = strsep(&(P), " \t"); \ 374 } while ((W) != NULL && *(W) == '\0') 375#define PLURAL(s) ((s) == 1 ? "" : "s") 376#define REASSIGN(X,Y) do { if (X) free(X); (X)=(Y); } while (/*CONSTCOND*/0) 377 378#ifndef IPPORT_ANONMAX 379# define IPPORT_ANONMAX 65535 380#endif 381