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-rw-r--r--contrib/lukemftpd/src/conf.c949
1 files changed, 0 insertions, 949 deletions
diff --git a/contrib/lukemftpd/src/conf.c b/contrib/lukemftpd/src/conf.c
deleted file mode 100644
index 35953074d8f1..000000000000
--- a/contrib/lukemftpd/src/conf.c
+++ /dev/null
@@ -1,949 +0,0 @@
-/* $NetBSD: conf.c,v 1.57 2006/02/01 14:20:12 christos Exp $ */
-
-/*-
- * Copyright (c) 1997-2005 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * This code is derived from software contributed to The NetBSD Foundation
- * by Simon Burge and Luke Mewburn.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the NetBSD
- * Foundation, Inc. and its contributors.
- * 4. Neither the name of The NetBSD Foundation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-__RCSID("$NetBSD: conf.c,v 1.57 2006/02/01 14:20:12 christos Exp $");
-#endif /* not lint */
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <glob.h>
-#include <netdb.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stringlist.h>
-#include <syslog.h>
-#include <time.h>
-#include <unistd.h>
-#include <util.h>
-
-#ifdef KERBEROS5
-#include <krb5/krb5.h>
-#endif
-
-#include "extern.h"
-#include "pathnames.h"
-
-static char *strend(const char *, char *);
-static int filetypematch(char *, int);
-
-
- /* class defaults */
-#define DEFAULT_LIMIT -1 /* unlimited connections */
-#define DEFAULT_MAXFILESIZE -1 /* unlimited file size */
-#define DEFAULT_MAXTIMEOUT 7200 /* 2 hours */
-#define DEFAULT_TIMEOUT 900 /* 15 minutes */
-#define DEFAULT_UMASK 027 /* rw-r----- */
-
-/*
- * Initialise curclass to an `empty' state
- */
-void
-init_curclass(void)
-{
- struct ftpconv *conv, *cnext;
-
- for (conv = curclass.conversions; conv != NULL; conv = cnext) {
- REASSIGN(conv->suffix, NULL);
- REASSIGN(conv->types, NULL);
- REASSIGN(conv->disable, NULL);
- REASSIGN(conv->command, NULL);
- cnext = conv->next;
- free(conv);
- }
-
- memset((char *)&curclass.advertise, 0, sizeof(curclass.advertise));
- curclass.advertise.su_len = 0; /* `not used' */
- REASSIGN(curclass.chroot, NULL);
- REASSIGN(curclass.classname, NULL);
- curclass.conversions = NULL;
- REASSIGN(curclass.display, NULL);
- REASSIGN(curclass.homedir, NULL);
- curclass.limit = DEFAULT_LIMIT;
- REASSIGN(curclass.limitfile, NULL);
- curclass.maxfilesize = DEFAULT_MAXFILESIZE;
- curclass.maxrateget = 0;
- curclass.maxrateput = 0;
- curclass.maxtimeout = DEFAULT_MAXTIMEOUT;
- REASSIGN(curclass.motd, ftpd_strdup(_NAME_FTPLOGINMESG));
- REASSIGN(curclass.notify, NULL);
- curclass.portmin = 0;
- curclass.portmax = 0;
- curclass.rateget = 0;
- curclass.rateput = 0;
- curclass.timeout = DEFAULT_TIMEOUT;
- /* curclass.type is set elsewhere */
- curclass.umask = DEFAULT_UMASK;
- curclass.mmapsize = 0;
- curclass.readsize = 0;
- curclass.writesize = 0;
- curclass.sendbufsize = 0;
- curclass.sendlowat = 0;
-
- CURCLASS_FLAGS_SET(checkportcmd);
- CURCLASS_FLAGS_CLR(denyquick);
- CURCLASS_FLAGS_CLR(hidesymlinks);
- CURCLASS_FLAGS_SET(modify);
- CURCLASS_FLAGS_SET(passive);
- CURCLASS_FLAGS_CLR(private);
- CURCLASS_FLAGS_CLR(sanenames);
- CURCLASS_FLAGS_SET(upload);
-}
-
-/*
- * Parse the configuration file, looking for the named class, and
- * define curclass to contain the appropriate settings.
- */
-void
-parse_conf(const char *findclass)
-{
- FILE *f;
- char *buf, *p;
- size_t len;
- LLT llval;
- int none, match;
- char *endp, errbuf[100];
- char *class, *word, *arg, *template;
- const char *infile;
- size_t line;
- struct ftpconv *conv, *cnext;
-
- init_curclass();
- REASSIGN(curclass.classname, ftpd_strdup(findclass));
- /* set more guest defaults */
- if (strcasecmp(findclass, "guest") == 0) {
- CURCLASS_FLAGS_CLR(modify);
- curclass.umask = 0707;
- }
-
- infile = conffilename(_NAME_FTPDCONF);
- if ((f = fopen(infile, "r")) == NULL)
- return;
-
- line = 0;
- template = NULL;
- for (;
- (buf = fparseln(f, &len, &line, NULL, FPARSELN_UNESCCOMM |
- FPARSELN_UNESCCONT | FPARSELN_UNESCESC)) != NULL;
- free(buf)) {
- none = match = 0;
- p = buf;
- if (len < 1)
- continue;
- if (p[len - 1] == '\n')
- p[--len] = '\0';
- if (EMPTYSTR(p))
- continue;
-
- NEXTWORD(p, word);
- NEXTWORD(p, class);
- NEXTWORD(p, arg);
- if (EMPTYSTR(word) || EMPTYSTR(class))
- continue;
- if (strcasecmp(class, "none") == 0)
- none = 1;
- if (! (strcasecmp(class, findclass) == 0 ||
- (template != NULL && strcasecmp(class, template) == 0) ||
- none ||
- strcasecmp(class, "all") == 0) )
- continue;
-
-#define CONF_FLAG(Field) \
- do { \
- if (none || \
- (!EMPTYSTR(arg) && strcasecmp(arg, "off") == 0)) \
- CURCLASS_FLAGS_CLR(Field); \
- else \
- CURCLASS_FLAGS_SET(Field); \
- } while (0)
-
-#define CONF_STRING(Field) \
- do { \
- if (none || EMPTYSTR(arg)) \
- arg = NULL; \
- else \
- arg = ftpd_strdup(arg); \
- REASSIGN(curclass.Field, arg); \
- } while (0)
-
-#define CONF_LL(Field,Arg,Min,Max) \
- do { \
- if (none || EMPTYSTR(Arg)) \
- goto nextline; \
- llval = strsuftollx(#Field, Arg, Min, Max, \
- errbuf, sizeof(errbuf)); \
- if (errbuf[0]) { \
- syslog(LOG_WARNING, "%s line %d: %s", \
- infile, (int)line, errbuf); \
- goto nextline; \
- } \
- curclass.Field = llval; \
- } while(0)
-
- if (0) {
- /* no-op */
-
- } else if ((strcasecmp(word, "advertise") == 0)
- || (strcasecmp(word, "advertize") == 0)) {
- struct addrinfo hints, *res;
- int error;
-
- memset((char *)&curclass.advertise, 0,
- sizeof(curclass.advertise));
- curclass.advertise.su_len = 0;
- if (none || EMPTYSTR(arg))
- continue;
- res = NULL;
- memset(&hints, 0, sizeof(hints));
- /*
- * only get addresses of the family
- * that we're listening on
- */
- hints.ai_family = ctrl_addr.su_family;
- hints.ai_socktype = SOCK_STREAM;
- error = getaddrinfo(arg, "0", &hints, &res);
- if (error) {
- syslog(LOG_WARNING, "%s line %d: %s",
- infile, (int)line, gai_strerror(error));
- advertiseparsefail:
- if (res)
- freeaddrinfo(res);
- continue;
- }
- if (res->ai_next) {
- syslog(LOG_WARNING,
- "%s line %d: multiple addresses returned for `%s'; please be more specific",
- infile, (int)line, arg);
- goto advertiseparsefail;
- }
- if (sizeof(curclass.advertise) < res->ai_addrlen || (
-#ifdef INET6
- res->ai_family != AF_INET6 &&
-#endif
- res->ai_family != AF_INET)) {
- syslog(LOG_WARNING,
- "%s line %d: unsupported protocol %d for `%s'",
- infile, (int)line, res->ai_family, arg);
- goto advertiseparsefail;
- }
- memcpy(&curclass.advertise, res->ai_addr,
- res->ai_addrlen);
- curclass.advertise.su_len = res->ai_addrlen;
- freeaddrinfo(res);
-
- } else if (strcasecmp(word, "checkportcmd") == 0) {
- CONF_FLAG(checkportcmd);
-
- } else if (strcasecmp(word, "chroot") == 0) {
- CONF_STRING(chroot);
-
- } else if (strcasecmp(word, "classtype") == 0) {
- if (!none && !EMPTYSTR(arg)) {
- if (strcasecmp(arg, "GUEST") == 0)
- curclass.type = CLASS_GUEST;
- else if (strcasecmp(arg, "CHROOT") == 0)
- curclass.type = CLASS_CHROOT;
- else if (strcasecmp(arg, "REAL") == 0)
- curclass.type = CLASS_REAL;
- else {
- syslog(LOG_WARNING,
- "%s line %d: unknown class type `%s'",
- infile, (int)line, arg);
- continue;
- }
- }
-
- } else if (strcasecmp(word, "conversion") == 0) {
- char *suffix, *types, *disable, *convcmd;
-
- if (EMPTYSTR(arg)) {
- syslog(LOG_WARNING,
- "%s line %d: %s requires a suffix",
- infile, (int)line, word);
- continue; /* need a suffix */
- }
- NEXTWORD(p, types);
- NEXTWORD(p, disable);
- convcmd = p;
- if (convcmd)
- convcmd += strspn(convcmd, " \t");
- suffix = ftpd_strdup(arg);
- if (none || EMPTYSTR(types) ||
- EMPTYSTR(disable) || EMPTYSTR(convcmd)) {
- types = NULL;
- disable = NULL;
- convcmd = NULL;
- } else {
- types = ftpd_strdup(types);
- disable = ftpd_strdup(disable);
- convcmd = ftpd_strdup(convcmd);
- }
- for (conv = curclass.conversions; conv != NULL;
- conv = conv->next) {
- if (strcmp(conv->suffix, suffix) == 0)
- break;
- }
- if (conv == NULL) {
- conv = (struct ftpconv *)
- calloc(1, sizeof(struct ftpconv));
- if (conv == NULL) {
- syslog(LOG_WARNING, "can't malloc");
- continue;
- }
- conv->next = NULL;
- for (cnext = curclass.conversions;
- cnext != NULL; cnext = cnext->next)
- if (cnext->next == NULL)
- break;
- if (cnext != NULL)
- cnext->next = conv;
- else
- curclass.conversions = conv;
- }
- REASSIGN(conv->suffix, suffix);
- REASSIGN(conv->types, types);
- REASSIGN(conv->disable, disable);
- REASSIGN(conv->command, convcmd);
-
- } else if (strcasecmp(word, "denyquick") == 0) {
- CONF_FLAG(denyquick);
-
- } else if (strcasecmp(word, "display") == 0) {
- CONF_STRING(display);
-
- } else if (strcasecmp(word, "hidesymlinks") == 0) {
- CONF_FLAG(hidesymlinks);
-
- } else if (strcasecmp(word, "homedir") == 0) {
- CONF_STRING(homedir);
-
- } else if (strcasecmp(word, "limit") == 0) {
- curclass.limit = DEFAULT_LIMIT;
- REASSIGN(curclass.limitfile, NULL);
- CONF_LL(limit, arg, -1, LLTMAX);
- REASSIGN(curclass.limitfile,
- EMPTYSTR(p) ? NULL : ftpd_strdup(p));
-
- } else if (strcasecmp(word, "maxfilesize") == 0) {
- curclass.maxfilesize = DEFAULT_MAXFILESIZE;
- CONF_LL(maxfilesize, arg, -1, LLTMAX);
-
- } else if (strcasecmp(word, "maxtimeout") == 0) {
- curclass.maxtimeout = DEFAULT_MAXTIMEOUT;
- CONF_LL(maxtimeout, arg,
- MIN(30, curclass.timeout), LLTMAX);
-
- } else if (strcasecmp(word, "mmapsize") == 0) {
- curclass.mmapsize = 0;
- CONF_LL(mmapsize, arg, 0, LLTMAX);
-
- } else if (strcasecmp(word, "readsize") == 0) {
- curclass.readsize = 0;
- CONF_LL(readsize, arg, 0, LLTMAX);
-
- } else if (strcasecmp(word, "writesize") == 0) {
- curclass.writesize = 0;
- CONF_LL(writesize, arg, 0, LLTMAX);
-
- } else if (strcasecmp(word, "recvbufsize") == 0) {
- curclass.recvbufsize = 0;
- CONF_LL(recvbufsize, arg, 0, LLTMAX);
-
- } else if (strcasecmp(word, "sendbufsize") == 0) {
- curclass.sendbufsize = 0;
- CONF_LL(sendbufsize, arg, 0, LLTMAX);
-
- } else if (strcasecmp(word, "sendlowat") == 0) {
- curclass.sendlowat = 0;
- CONF_LL(sendlowat, arg, 0, LLTMAX);
-
- } else if (strcasecmp(word, "modify") == 0) {
- CONF_FLAG(modify);
-
- } else if (strcasecmp(word, "motd") == 0) {
- CONF_STRING(motd);
-
- } else if (strcasecmp(word, "notify") == 0) {
- CONF_STRING(notify);
-
- } else if (strcasecmp(word, "passive") == 0) {
- CONF_FLAG(passive);
-
- } else if (strcasecmp(word, "portrange") == 0) {
- long minport, maxport;
-
- curclass.portmin = 0;
- curclass.portmax = 0;
- if (none || EMPTYSTR(arg))
- continue;
- if (EMPTYSTR(p)) {
- syslog(LOG_WARNING,
- "%s line %d: missing maxport argument",
- infile, (int)line);
- continue;
- }
- minport = strsuftollx("minport", arg, IPPORT_RESERVED,
- IPPORT_ANONMAX, errbuf, sizeof(errbuf));
- if (errbuf[0]) {
- syslog(LOG_WARNING, "%s line %d: %s",
- infile, (int)line, errbuf);
- continue;
- }
- maxport = strsuftollx("maxport", p, IPPORT_RESERVED,
- IPPORT_ANONMAX, errbuf, sizeof(errbuf));
- if (errbuf[0]) {
- syslog(LOG_WARNING, "%s line %d: %s",
- infile, (int)line, errbuf);
- continue;
- }
- if (minport >= maxport) {
- syslog(LOG_WARNING,
- "%s line %d: minport %ld >= maxport %ld",
- infile, (int)line, minport, maxport);
- continue;
- }
- curclass.portmin = (int)minport;
- curclass.portmax = (int)maxport;
-
- } else if (strcasecmp(word, "private") == 0) {
- CONF_FLAG(private);
-
- } else if (strcasecmp(word, "rateget") == 0) {
- curclass.maxrateget = curclass.rateget = 0;
- CONF_LL(rateget, arg, 0, LLTMAX);
- curclass.maxrateget = curclass.rateget;
-
- } else if (strcasecmp(word, "rateput") == 0) {
- curclass.maxrateput = curclass.rateput = 0;
- CONF_LL(rateput, arg, 0, LLTMAX);
- curclass.maxrateput = curclass.rateput;
-
- } else if (strcasecmp(word, "sanenames") == 0) {
- CONF_FLAG(sanenames);
-
- } else if (strcasecmp(word, "timeout") == 0) {
- curclass.timeout = DEFAULT_TIMEOUT;
- CONF_LL(timeout, arg, 30, curclass.maxtimeout);
-
- } else if (strcasecmp(word, "template") == 0) {
- if (none)
- continue;
- REASSIGN(template, EMPTYSTR(arg) ? NULL : ftpd_strdup(arg));
-
- } else if (strcasecmp(word, "umask") == 0) {
- u_long fumask;
-
- curclass.umask = DEFAULT_UMASK;
- if (none || EMPTYSTR(arg))
- continue;
- errno = 0;
- endp = NULL;
- fumask = strtoul(arg, &endp, 8);
- if (errno || *arg == '\0' || *endp != '\0' ||
- fumask > 0777) {
- syslog(LOG_WARNING,
- "%s line %d: invalid umask %s",
- infile, (int)line, arg);
- continue;
- }
- curclass.umask = (mode_t)fumask;
-
- } else if (strcasecmp(word, "upload") == 0) {
- CONF_FLAG(upload);
- if (! CURCLASS_FLAGS_ISSET(upload))
- CURCLASS_FLAGS_CLR(modify);
-
- } else {
- syslog(LOG_WARNING,
- "%s line %d: unknown directive '%s'",
- infile, (int)line, word);
- continue;
- }
- nextline:
- ;
- }
- REASSIGN(template, NULL);
- fclose(f);
-}
-
-/*
- * Show file listed in curclass.display first time in, and list all the
- * files named in curclass.notify in the current directory.
- * Send back responses with the prefix `code' + "-".
- * If code == -1, flush the internal cache of directory names and return.
- */
-void
-show_chdir_messages(int code)
-{
- static StringList *slist = NULL;
-
- struct stat st;
- struct tm *t;
- glob_t gl;
- time_t now, then;
- int age;
- char curwd[MAXPATHLEN];
- char *cp, **rlist;
-
- if (code == -1) {
- if (slist != NULL)
- sl_free(slist, 1);
- slist = NULL;
- return;
- }
-
- if (quietmessages)
- return;
-
- /* Setup list for directory cache */
- if (slist == NULL)
- slist = sl_init();
- if (slist == NULL) {
- syslog(LOG_WARNING, "can't allocate memory for stringlist");
- return;
- }
-
- /* Check if this directory has already been visited */
- if (getcwd(curwd, sizeof(curwd) - 1) == NULL) {
- syslog(LOG_WARNING, "can't getcwd: %s", strerror(errno));
- return;
- }
- if (sl_find(slist, curwd) != NULL)
- return;
-
- cp = ftpd_strdup(curwd);
- if (sl_add(slist, cp) == -1)
- syslog(LOG_WARNING, "can't add `%s' to stringlist", cp);
-
- /* First check for a display file */
- (void)display_file(curclass.display, code);
-
- /* Now see if there are any notify files */
- if (EMPTYSTR(curclass.notify))
- return;
-
- memset(&gl, 0, sizeof(gl));
- if (glob(curclass.notify, GLOB_BRACE|GLOB_LIMIT, NULL, &gl) != 0
- || gl.gl_matchc == 0) {
- globfree(&gl);
- return;
- }
- time(&now);
- for (rlist = gl.gl_pathv; *rlist != NULL; rlist++) {
- if (stat(*rlist, &st) != 0)
- continue;
- if (!S_ISREG(st.st_mode))
- continue;
- then = st.st_mtime;
- if (code != 0) {
- reply(-code, "%s", "");
- code = 0;
- }
- reply(-code, "Please read the file %s", *rlist);
- t = localtime(&now);
- age = 365 * t->tm_year + t->tm_yday;
- t = localtime(&then);
- age -= 365 * t->tm_year + t->tm_yday;
- reply(-code, " it was last modified on %.24s - %d day%s ago",
- ctime(&then), age, PLURAL(age));
- }
- globfree(&gl);
-}
-
-int
-display_file(const char *file, int code)
-{
- FILE *f;
- char *buf, *p;
- char curwd[MAXPATHLEN];
- size_t len;
- off_t lastnum;
- time_t now;
-
- lastnum = 0;
- if (quietmessages)
- return (0);
-
- if (EMPTYSTR(file))
- return(0);
- if ((f = fopen(file, "r")) == NULL)
- return (0);
- reply(-code, "%s", "");
-
- for (;
- (buf = fparseln(f, &len, NULL, "\0\0\0", 0)) != NULL; free(buf)) {
- if (len > 0)
- if (buf[len - 1] == '\n')
- buf[--len] = '\0';
- cprintf(stdout, " ");
-
- for (p = buf; *p; p++) {
- if (*p == '%') {
- p++;
- switch (*p) {
-
- case 'c':
- cprintf(stdout, "%s",
- curclass.classname ?
- curclass.classname : "<unknown>");
- break;
-
- case 'C':
- if (getcwd(curwd, sizeof(curwd)-1)
- == NULL){
- syslog(LOG_WARNING,
- "can't getcwd: %s",
- strerror(errno));
- continue;
- }
- cprintf(stdout, "%s", curwd);
- break;
-
- case 'E':
- if (! EMPTYSTR(emailaddr))
- cprintf(stdout, "%s",
- emailaddr);
- break;
-
- case 'L':
- cprintf(stdout, "%s", hostname);
- break;
-
- case 'M':
- if (curclass.limit == -1) {
- cprintf(stdout, "unlimited");
- lastnum = 0;
- } else {
- cprintf(stdout, LLF,
- (LLT)curclass.limit);
- lastnum = curclass.limit;
- }
- break;
-
- case 'N':
- cprintf(stdout, "%d", connections);
- lastnum = connections;
- break;
-
- case 'R':
- cprintf(stdout, "%s", remotehost);
- break;
-
- case 's':
- if (lastnum != 1)
- cprintf(stdout, "s");
- break;
-
- case 'S':
- if (lastnum != 1)
- cprintf(stdout, "S");
- break;
-
- case 'T':
- now = time(NULL);
- cprintf(stdout, "%.24s", ctime(&now));
- break;
-
- case 'U':
- cprintf(stdout, "%s",
- pw ? pw->pw_name : "<unknown>");
- break;
-
- case '%':
- CPUTC('%', stdout);
- break;
-
- }
- } else
- CPUTC(*p, stdout);
- }
- cprintf(stdout, "\r\n");
- }
-
- (void)fflush(stdout);
- (void)fclose(f);
- return (1);
-}
-
-/*
- * Parse src, expanding '%' escapes, into dst (which must be at least
- * MAXPATHLEN long).
- */
-void
-format_path(char *dst, const char *src)
-{
- size_t len;
- const char *p;
-
- dst[0] = '\0';
- len = 0;
- if (src == NULL)
- return;
- for (p = src; *p && len < MAXPATHLEN; p++) {
- if (*p == '%') {
- p++;
- switch (*p) {
-
- case 'c':
- len += strlcpy(dst + len, curclass.classname,
- MAXPATHLEN - len);
- break;
-
- case 'd':
- len += strlcpy(dst + len, pw->pw_dir,
- MAXPATHLEN - len);
- break;
-
- case 'u':
- len += strlcpy(dst + len, pw->pw_name,
- MAXPATHLEN - len);
- break;
-
- case '%':
- dst[len++] = '%';
- break;
-
- }
- } else
- dst[len++] = *p;
- }
- if (len < MAXPATHLEN)
- dst[len] = '\0';
- dst[MAXPATHLEN - 1] = '\0';
-}
-
-/*
- * Find s2 at the end of s1. If found, return a string up to (but
- * not including) s2, otherwise returns NULL.
- */
-static char *
-strend(const char *s1, char *s2)
-{
- static char buf[MAXPATHLEN];
-
- char *start;
- size_t l1, l2;
-
- l1 = strlen(s1);
- l2 = strlen(s2);
-
- if (l2 >= l1 || l1 >= sizeof(buf))
- return(NULL);
-
- strlcpy(buf, s1, sizeof(buf));
- start = buf + (l1 - l2);
-
- if (strcmp(start, s2) == 0) {
- *start = '\0';
- return(buf);
- } else
- return(NULL);
-}
-
-static int
-filetypematch(char *types, int mode)
-{
- for ( ; types[0] != '\0'; types++)
- switch (*types) {
- case 'd':
- if (S_ISDIR(mode))
- return(1);
- break;
- case 'f':
- if (S_ISREG(mode))
- return(1);
- break;
- }
- return(0);
-}
-
-/*
- * Look for a conversion. If we succeed, return a pointer to the
- * command to execute for the conversion.
- *
- * The command is stored in a static array so there's no memory
- * leak problems, and not too much to change in ftpd.c. This
- * routine doesn't need to be re-entrant unless we start using a
- * multi-threaded ftpd, and that's not likely for a while...
- */
-char **
-do_conversion(const char *fname)
-{
- struct ftpconv *cp;
- struct stat st;
- int o_errno;
- char *base = NULL;
- char *cmd, *p, *lp, **argv;
- StringList *sl;
-
- o_errno = errno;
- sl = NULL;
- cmd = NULL;
- for (cp = curclass.conversions; cp != NULL; cp = cp->next) {
- if (cp->suffix == NULL) {
- syslog(LOG_WARNING,
- "cp->suffix==NULL in conv list; SHOULDN'T HAPPEN!");
- continue;
- }
- if ((base = strend(fname, cp->suffix)) == NULL)
- continue;
- if (cp->types == NULL || cp->disable == NULL ||
- cp->command == NULL)
- continue;
- /* Is it enabled? */
- if (strcmp(cp->disable, ".") != 0 &&
- stat(cp->disable, &st) == 0)
- continue;
- /* Does the base exist? */
- if (stat(base, &st) < 0)
- continue;
- /* Is the file type ok */
- if (!filetypematch(cp->types, st.st_mode))
- continue;
- break; /* "We have a winner!" */
- }
-
- /* If we got through the list, no conversion */
- if (cp == NULL)
- goto cleanup_do_conv;
-
- /* Split up command into an argv */
- if ((sl = sl_init()) == NULL)
- goto cleanup_do_conv;
- cmd = ftpd_strdup(cp->command);
- p = cmd;
- while (p) {
- NEXTWORD(p, lp);
- if (strcmp(lp, "%s") == 0)
- lp = base;
- if (sl_add(sl, ftpd_strdup(lp)) == -1)
- goto cleanup_do_conv;
- }
-
- if (sl_add(sl, NULL) == -1)
- goto cleanup_do_conv;
- argv = sl->sl_str;
- free(cmd);
- free(sl);
- return(argv);
-
- cleanup_do_conv:
- if (sl)
- sl_free(sl, 1);
- free(cmd);
- errno = o_errno;
- return(NULL);
-}
-
-/*
- * Count the number of current connections, reading from
- * /var/run/ftpd.pids-<class>
- * Does a kill -0 on each pid in that file, and only counts
- * processes that exist (or frees the slot if it doesn't).
- * Adds getpid() to the first free slot. Truncates the file
- * if possible.
- */
-void
-count_users(void)
-{
- char fn[MAXPATHLEN];
- int fd, i, last;
- size_t count;
- pid_t *pids, mypid;
- struct stat sb;
-
- (void)strlcpy(fn, _PATH_CLASSPIDS, sizeof(fn));
- (void)strlcat(fn, curclass.classname, sizeof(fn));
- pids = NULL;
- connections = 1;
-
- if ((fd = open(fn, O_RDWR | O_CREAT, 0600)) == -1)
- return;
- if (lockf(fd, F_TLOCK, 0) == -1)
- goto cleanup_count;
- if (fstat(fd, &sb) == -1)
- goto cleanup_count;
- if ((pids = malloc(sb.st_size + sizeof(pid_t))) == NULL)
- goto cleanup_count;
- count = read(fd, pids, sb.st_size);
- if (count < 0 || count != sb.st_size)
- goto cleanup_count;
- count /= sizeof(pid_t);
- mypid = getpid();
- last = 0;
- for (i = 0; i < count; i++) {
- if (pids[i] == 0)
- continue;
- if (kill(pids[i], 0) == -1 && errno != EPERM) {
- if (mypid != 0) {
- pids[i] = mypid;
- mypid = 0;
- last = i;
- }
- } else {
- connections++;
- last = i;
- }
- }
- if (mypid != 0) {
- if (pids[last] != 0)
- last++;
- pids[last] = mypid;
- }
- count = (last + 1) * sizeof(pid_t);
- if (lseek(fd, 0, SEEK_SET) == -1)
- goto cleanup_count;
- if (write(fd, pids, count) == -1)
- goto cleanup_count;
- (void)ftruncate(fd, count);
-
- cleanup_count:
- if (lseek(fd, 0, SEEK_SET) != -1)
- (void)lockf(fd, F_ULOCK, 0);
- close(fd);
- REASSIGN(pids, NULL);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-21 20:56:08 +0000