summaryrefslogtreecommitdiffstats
path: root/usr.bin/ftp/ftp.c
diff options
context:
space:
mode:
Diffstat (limited to 'usr.bin/ftp/ftp.c')
-rw-r--r--usr.bin/ftp/ftp.c1470
1 files changed, 1470 insertions, 0 deletions
diff --git a/usr.bin/ftp/ftp.c b/usr.bin/ftp/ftp.c
new file mode 100644
index 0000000..19e8f8e
--- /dev/null
+++ b/usr.bin/ftp/ftp.c
@@ -0,0 +1,1470 @@
+/*
+ * Copyright (c) 1985, 1989, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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 University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)ftp.c 8.4 (Berkeley) 4/6/94";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <sys/file.h>
+
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <arpa/inet.h>
+#include <arpa/ftp.h>
+#include <arpa/telnet.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <netdb.h>
+#include <pwd.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <varargs.h>
+
+#include "ftp_var.h"
+
+extern int h_errno;
+
+struct sockaddr_in hisctladdr;
+struct sockaddr_in data_addr;
+int data = -1;
+int abrtflag = 0;
+jmp_buf ptabort;
+int ptabflg;
+int ptflag = 0;
+struct sockaddr_in myctladdr;
+off_t restart_point = 0;
+
+
+FILE *cin, *cout;
+
+char *
+hookup(host, port)
+ char *host;
+ int port;
+{
+ struct hostent *hp = 0;
+ int s, len, tos;
+ static char hostnamebuf[80];
+
+ memset((char *)&hisctladdr, 0, sizeof (hisctladdr));
+ hisctladdr.sin_addr.s_addr = inet_addr(host);
+ if (hisctladdr.sin_addr.s_addr != -1) {
+ hisctladdr.sin_family = AF_INET;
+ (void) strncpy(hostnamebuf, host, sizeof(hostnamebuf));
+ } else {
+ hp = gethostbyname(host);
+ if (hp == NULL) {
+ warnx("%s: %s", host, hstrerror(h_errno));
+ code = -1;
+ return ((char *) 0);
+ }
+ hisctladdr.sin_family = hp->h_addrtype;
+ memmove((caddr_t)&hisctladdr.sin_addr,
+ hp->h_addr_list[0], hp->h_length);
+ (void) strncpy(hostnamebuf, hp->h_name, sizeof(hostnamebuf));
+ }
+ hostname = hostnamebuf;
+ s = socket(hisctladdr.sin_family, SOCK_STREAM, 0);
+ if (s < 0) {
+ warn("socket");
+ code = -1;
+ return (0);
+ }
+ hisctladdr.sin_port = port;
+ while (connect(s, (struct sockaddr *)&hisctladdr, sizeof (hisctladdr)) < 0) {
+ if (hp && hp->h_addr_list[1]) {
+ int oerrno = errno;
+ char *ia;
+
+ ia = inet_ntoa(hisctladdr.sin_addr);
+ errno = oerrno;
+ warn("connect to address %s", ia);
+ hp->h_addr_list++;
+ memmove((caddr_t)&hisctladdr.sin_addr,
+ hp->h_addr_list[0], hp->h_length);
+ fprintf(stdout, "Trying %s...\n",
+ inet_ntoa(hisctladdr.sin_addr));
+ (void) close(s);
+ s = socket(hisctladdr.sin_family, SOCK_STREAM, 0);
+ if (s < 0) {
+ warn("socket");
+ code = -1;
+ return (0);
+ }
+ continue;
+ }
+ warn("connect");
+ code = -1;
+ goto bad;
+ }
+ len = sizeof (myctladdr);
+ if (getsockname(s, (struct sockaddr *)&myctladdr, &len) < 0) {
+ warn("getsockname");
+ code = -1;
+ goto bad;
+ }
+#ifdef IP_TOS
+ tos = IPTOS_LOWDELAY;
+ if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos, sizeof(int)) < 0)
+ warn("setsockopt TOS (ignored)");
+#endif
+ cin = fdopen(s, "r");
+ cout = fdopen(s, "w");
+ if (cin == NULL || cout == NULL) {
+ warnx("fdopen failed.");
+ if (cin)
+ (void) fclose(cin);
+ if (cout)
+ (void) fclose(cout);
+ code = -1;
+ goto bad;
+ }
+ if (verbose)
+ printf("Connected to %s.\n", hostname);
+ if (getreply(0) > 2) { /* read startup message from server */
+ if (cin)
+ (void) fclose(cin);
+ if (cout)
+ (void) fclose(cout);
+ code = -1;
+ goto bad;
+ }
+#ifdef SO_OOBINLINE
+ {
+ int on = 1;
+
+ if (setsockopt(s, SOL_SOCKET, SO_OOBINLINE, (char *)&on, sizeof(on))
+ < 0 && debug) {
+ warn("setsockopt");
+ }
+ }
+#endif /* SO_OOBINLINE */
+
+ return (hostname);
+bad:
+ (void) close(s);
+ return ((char *)0);
+}
+
+int
+login(host)
+ char *host;
+{
+ char tmp[80];
+ char *user, *pass, *acct;
+ int n, aflag = 0;
+
+ user = pass = acct = 0;
+ if (ruserpass(host, &user, &pass, &acct) < 0) {
+ code = -1;
+ return (0);
+ }
+ while (user == NULL) {
+ char *myname = getlogin();
+
+ if (myname == NULL) {
+ struct passwd *pp = getpwuid(getuid());
+
+ if (pp != NULL)
+ myname = pp->pw_name;
+ }
+ if (myname)
+ printf("Name (%s:%s): ", host, myname);
+ else
+ printf("Name (%s): ", host);
+ (void) fgets(tmp, sizeof(tmp) - 1, stdin);
+ tmp[strlen(tmp) - 1] = '\0';
+ if (*tmp == '\0')
+ user = myname;
+ else
+ user = tmp;
+ }
+ n = command("USER %s", user);
+ if (n == CONTINUE) {
+ if (pass == NULL)
+ pass = getpass("Password:");
+ n = command("PASS %s", pass);
+ }
+ if (n == CONTINUE) {
+ aflag++;
+ acct = getpass("Account:");
+ n = command("ACCT %s", acct);
+ }
+ if (n != COMPLETE) {
+ warnx("Login failed.");
+ return (0);
+ }
+ if (!aflag && acct != NULL)
+ (void) command("ACCT %s", acct);
+ if (proxy)
+ return (1);
+ for (n = 0; n < macnum; ++n) {
+ if (!strcmp("init", macros[n].mac_name)) {
+ (void) strcpy(line, "$init");
+ makeargv();
+ domacro(margc, margv);
+ break;
+ }
+ }
+ return (1);
+}
+
+void
+cmdabort()
+{
+
+ printf("\n");
+ (void) fflush(stdout);
+ abrtflag++;
+ if (ptflag)
+ longjmp(ptabort,1);
+}
+
+/*VARARGS*/
+int
+command(va_alist)
+va_dcl
+{
+ va_list ap;
+ char *fmt;
+ int r;
+ sig_t oldintr;
+
+ abrtflag = 0;
+ if (debug) {
+ printf("---> ");
+ va_start(ap);
+ fmt = va_arg(ap, char *);
+ if (strncmp("PASS ", fmt, 5) == 0)
+ printf("PASS XXXX");
+ else
+ vfprintf(stdout, fmt, ap);
+ va_end(ap);
+ printf("\n");
+ (void) fflush(stdout);
+ }
+ if (cout == NULL) {
+ warn("No control connection for command");
+ code = -1;
+ return (0);
+ }
+ oldintr = signal(SIGINT, cmdabort);
+ va_start(ap);
+ fmt = va_arg(ap, char *);
+ vfprintf(cout, fmt, ap);
+ va_end(ap);
+ fprintf(cout, "\r\n");
+ (void) fflush(cout);
+ cpend = 1;
+ r = getreply(!strcmp(fmt, "QUIT"));
+ if (abrtflag && oldintr != SIG_IGN)
+ (*oldintr)(SIGINT);
+ (void) signal(SIGINT, oldintr);
+ return (r);
+}
+
+char reply_string[BUFSIZ]; /* last line of previous reply */
+
+int
+getreply(expecteof)
+ int expecteof;
+{
+ int c, n;
+ int dig;
+ int originalcode = 0, continuation = 0;
+ sig_t oldintr;
+ int pflag = 0;
+ char *cp, *pt = pasv;
+
+ oldintr = signal(SIGINT, cmdabort);
+ for (;;) {
+ dig = n = code = 0;
+ cp = reply_string;
+ while ((c = getc(cin)) != '\n') {
+ if (c == IAC) { /* handle telnet commands */
+ switch (c = getc(cin)) {
+ case WILL:
+ case WONT:
+ c = getc(cin);
+ fprintf(cout, "%c%c%c", IAC, DONT, c);
+ (void) fflush(cout);
+ break;
+ case DO:
+ case DONT:
+ c = getc(cin);
+ fprintf(cout, "%c%c%c", IAC, WONT, c);
+ (void) fflush(cout);
+ break;
+ default:
+ break;
+ }
+ continue;
+ }
+ dig++;
+ if (c == EOF) {
+ if (expecteof) {
+ (void) signal(SIGINT,oldintr);
+ code = 221;
+ return (0);
+ }
+ lostpeer();
+ if (verbose) {
+ printf("421 Service not available, remote server has closed connection\n");
+ (void) fflush(stdout);
+ }
+ code = 421;
+ return (4);
+ }
+ if (c != '\r' && (verbose > 0 ||
+ (verbose > -1 && n == '5' && dig > 4))) {
+ if (proxflag &&
+ (dig == 1 || dig == 5 && verbose == 0))
+ printf("%s:",hostname);
+ (void) putchar(c);
+ }
+ if (dig < 4 && isdigit(c))
+ code = code * 10 + (c - '0');
+ if (!pflag && code == 227)
+ pflag = 1;
+ if (dig > 4 && pflag == 1 && isdigit(c))
+ pflag = 2;
+ if (pflag == 2) {
+ if (c != '\r' && c != ')')
+ *pt++ = c;
+ else {
+ *pt = '\0';
+ pflag = 3;
+ }
+ }
+ if (dig == 4 && c == '-') {
+ if (continuation)
+ code = 0;
+ continuation++;
+ }
+ if (n == 0)
+ n = c;
+ if (cp < &reply_string[sizeof(reply_string) - 1])
+ *cp++ = c;
+ }
+ if (verbose > 0 || verbose > -1 && n == '5') {
+ (void) putchar(c);
+ (void) fflush (stdout);
+ }
+ if (continuation && code != originalcode) {
+ if (originalcode == 0)
+ originalcode = code;
+ continue;
+ }
+ *cp = '\0';
+ if (n != '1')
+ cpend = 0;
+ (void) signal(SIGINT,oldintr);
+ if (code == 421 || originalcode == 421)
+ lostpeer();
+ if (abrtflag && oldintr != cmdabort && oldintr != SIG_IGN)
+ (*oldintr)(SIGINT);
+ return (n - '0');
+ }
+}
+
+int
+empty(mask, sec)
+ struct fd_set *mask;
+ int sec;
+{
+ struct timeval t;
+
+ t.tv_sec = (long) sec;
+ t.tv_usec = 0;
+ return (select(32, mask, (struct fd_set *) 0, (struct fd_set *) 0, &t));
+}
+
+jmp_buf sendabort;
+
+void
+abortsend()
+{
+
+ mflag = 0;
+ abrtflag = 0;
+ printf("\nsend aborted\nwaiting for remote to finish abort\n");
+ (void) fflush(stdout);
+ longjmp(sendabort, 1);
+}
+
+#define HASHBYTES 1024
+
+void
+sendrequest(cmd, local, remote, printnames)
+ char *cmd, *local, *remote;
+ int printnames;
+{
+ struct stat st;
+ struct timeval start, stop;
+ int c, d;
+ FILE *fin, *dout = 0, *popen();
+ int (*closefunc) __P((FILE *));
+ sig_t oldintr, oldintp;
+ long bytes = 0, hashbytes = HASHBYTES;
+ char *lmode, buf[BUFSIZ], *bufp;
+
+ if (verbose && printnames) {
+ if (local && *local != '-')
+ printf("local: %s ", local);
+ if (remote)
+ printf("remote: %s\n", remote);
+ }
+ if (proxy) {
+ proxtrans(cmd, local, remote);
+ return;
+ }
+ if (curtype != type)
+ changetype(type, 0);
+ closefunc = NULL;
+ oldintr = NULL;
+ oldintp = NULL;
+ lmode = "w";
+ if (setjmp(sendabort)) {
+ while (cpend) {
+ (void) getreply(0);
+ }
+ if (data >= 0) {
+ (void) close(data);
+ data = -1;
+ }
+ if (oldintr)
+ (void) signal(SIGINT,oldintr);
+ if (oldintp)
+ (void) signal(SIGPIPE,oldintp);
+ code = -1;
+ return;
+ }
+ oldintr = signal(SIGINT, abortsend);
+ if (strcmp(local, "-") == 0)
+ fin = stdin;
+ else if (*local == '|') {
+ oldintp = signal(SIGPIPE,SIG_IGN);
+ fin = popen(local + 1, "r");
+ if (fin == NULL) {
+ warn("%s", local + 1);
+ (void) signal(SIGINT, oldintr);
+ (void) signal(SIGPIPE, oldintp);
+ code = -1;
+ return;
+ }
+ closefunc = pclose;
+ } else {
+ fin = fopen(local, "r");
+ if (fin == NULL) {
+ warn("local: %s", local);
+ (void) signal(SIGINT, oldintr);
+ code = -1;
+ return;
+ }
+ closefunc = fclose;
+ if (fstat(fileno(fin), &st) < 0 ||
+ (st.st_mode&S_IFMT) != S_IFREG) {
+ fprintf(stdout, "%s: not a plain file.\n", local);
+ (void) signal(SIGINT, oldintr);
+ fclose(fin);
+ code = -1;
+ return;
+ }
+ }
+ if (initconn()) {
+ (void) signal(SIGINT, oldintr);
+ if (oldintp)
+ (void) signal(SIGPIPE, oldintp);
+ code = -1;
+ if (closefunc != NULL)
+ (*closefunc)(fin);
+ return;
+ }
+ if (setjmp(sendabort))
+ goto abort;
+
+ if (restart_point &&
+ (strcmp(cmd, "STOR") == 0 || strcmp(cmd, "APPE") == 0)) {
+ int rc;
+
+ switch (curtype) {
+ case TYPE_A:
+ rc = fseek(fin, (long) restart_point, SEEK_SET);
+ break;
+ case TYPE_I:
+ case TYPE_L:
+ rc = lseek(fileno(fin), restart_point, SEEK_SET);
+ break;
+ }
+ if (rc < 0) {
+ warn("local: %s", local);
+ restart_point = 0;
+ if (closefunc != NULL)
+ (*closefunc)(fin);
+ return;
+ }
+ if (command("REST %ld", (long) restart_point)
+ != CONTINUE) {
+ restart_point = 0;
+ if (closefunc != NULL)
+ (*closefunc)(fin);
+ return;
+ }
+ restart_point = 0;
+ lmode = "r+w";
+ }
+ if (remote) {
+ if (command("%s %s", cmd, remote) != PRELIM) {
+ (void) signal(SIGINT, oldintr);
+ if (oldintp)
+ (void) signal(SIGPIPE, oldintp);
+ if (closefunc != NULL)
+ (*closefunc)(fin);
+ return;
+ }
+ } else
+ if (command("%s", cmd) != PRELIM) {
+ (void) signal(SIGINT, oldintr);
+ if (oldintp)
+ (void) signal(SIGPIPE, oldintp);
+ if (closefunc != NULL)
+ (*closefunc)(fin);
+ return;
+ }
+ dout = dataconn(lmode);
+ if (dout == NULL)
+ goto abort;
+ (void) gettimeofday(&start, (struct timezone *)0);
+ oldintp = signal(SIGPIPE, SIG_IGN);
+ switch (curtype) {
+
+ case TYPE_I:
+ case TYPE_L:
+ errno = d = 0;
+ while ((c = read(fileno(fin), buf, sizeof (buf))) > 0) {
+ bytes += c;
+ for (bufp = buf; c > 0; c -= d, bufp += d)
+ if ((d = write(fileno(dout), bufp, c)) <= 0)
+ break;
+ if (hash) {
+ while (bytes >= hashbytes) {
+ (void) putchar('#');
+ hashbytes += HASHBYTES;
+ }
+ (void) fflush(stdout);
+ }
+ }
+ if (hash && bytes > 0) {
+ if (bytes < HASHBYTES)
+ (void) putchar('#');
+ (void) putchar('\n');
+ (void) fflush(stdout);
+ }
+ if (c < 0)
+ warn("local: %s", local);
+ if (d < 0) {
+ if (errno != EPIPE)
+ warn("netout");
+ bytes = -1;
+ }
+ break;
+
+ case TYPE_A:
+ while ((c = getc(fin)) != EOF) {
+ if (c == '\n') {
+ while (hash && (bytes >= hashbytes)) {
+ (void) putchar('#');
+ (void) fflush(stdout);
+ hashbytes += HASHBYTES;
+ }
+ if (ferror(dout))
+ break;
+ (void) putc('\r', dout);
+ bytes++;
+ }
+ (void) putc(c, dout);
+ bytes++;
+ /* if (c == '\r') { */
+ /* (void) putc('\0', dout); // this violates rfc */
+ /* bytes++; */
+ /* } */
+ }
+ if (hash) {
+ if (bytes < hashbytes)
+ (void) putchar('#');
+ (void) putchar('\n');
+ (void) fflush(stdout);
+ }
+ if (ferror(fin))
+ warn("local: %s", local);
+ if (ferror(dout)) {
+ if (errno != EPIPE)
+ warn("netout");
+ bytes = -1;
+ }
+ break;
+ }
+ (void) gettimeofday(&stop, (struct timezone *)0);
+ if (closefunc != NULL)
+ (*closefunc)(fin);
+ (void) fclose(dout);
+ (void) getreply(0);
+ (void) signal(SIGINT, oldintr);
+ if (oldintp)
+ (void) signal(SIGPIPE, oldintp);
+ if (bytes > 0)
+ ptransfer("sent", bytes, &start, &stop);
+ return;
+abort:
+ (void) gettimeofday(&stop, (struct timezone *)0);
+ (void) signal(SIGINT, oldintr);
+ if (oldintp)
+ (void) signal(SIGPIPE, oldintp);
+ if (!cpend) {
+ code = -1;
+ return;
+ }
+ if (data >= 0) {
+ (void) close(data);
+ data = -1;
+ }
+ if (dout)
+ (void) fclose(dout);
+ (void) getreply(0);
+ code = -1;
+ if (closefunc != NULL && fin != NULL)
+ (*closefunc)(fin);
+ if (bytes > 0)
+ ptransfer("sent", bytes, &start, &stop);
+}
+
+jmp_buf recvabort;
+
+void
+abortrecv()
+{
+
+ mflag = 0;
+ abrtflag = 0;
+ printf("\nreceive aborted\nwaiting for remote to finish abort\n");
+ (void) fflush(stdout);
+ longjmp(recvabort, 1);
+}
+
+void
+recvrequest(cmd, local, remote, lmode, printnames)
+ char *cmd, *local, *remote, *lmode;
+ int printnames;
+{
+ FILE *fout, *din = 0;
+ int (*closefunc) __P((FILE *));
+ sig_t oldintr, oldintp;
+ int c, d, is_retr, tcrflag, bare_lfs = 0;
+ static int bufsize;
+ static char *buf;
+ long bytes = 0, hashbytes = HASHBYTES;
+ struct timeval start, stop;
+ struct stat st;
+
+ is_retr = strcmp(cmd, "RETR") == 0;
+ if (is_retr && verbose && printnames) {
+ if (local && *local != '-')
+ printf("local: %s ", local);
+ if (remote)
+ printf("remote: %s\n", remote);
+ }
+ if (proxy && is_retr) {
+ proxtrans(cmd, local, remote);
+ return;
+ }
+ closefunc = NULL;
+ oldintr = NULL;
+ oldintp = NULL;
+ tcrflag = !crflag && is_retr;
+ if (setjmp(recvabort)) {
+ while (cpend) {
+ (void) getreply(0);
+ }
+ if (data >= 0) {
+ (void) close(data);
+ data = -1;
+ }
+ if (oldintr)
+ (void) signal(SIGINT, oldintr);
+ code = -1;
+ return;
+ }
+ oldintr = signal(SIGINT, abortrecv);
+ if (strcmp(local, "-") && *local != '|') {
+ if (access(local, 2) < 0) {
+ char *dir = strrchr(local, '/');
+
+ if (errno != ENOENT && errno != EACCES) {
+ warn("local: %s", local);
+ (void) signal(SIGINT, oldintr);
+ code = -1;
+ return;
+ }
+ if (dir != NULL)
+ *dir = 0;
+ d = access(dir ? local : ".", 2);
+ if (dir != NULL)
+ *dir = '/';
+ if (d < 0) {
+ warn("local: %s", local);
+ (void) signal(SIGINT, oldintr);
+ code = -1;
+ return;
+ }
+ if (!runique && errno == EACCES &&
+ chmod(local, 0600) < 0) {
+ warn("local: %s", local);
+ (void) signal(SIGINT, oldintr);
+ (void) signal(SIGINT, oldintr);
+ code = -1;
+ return;
+ }
+ if (runique && errno == EACCES &&
+ (local = gunique(local)) == NULL) {
+ (void) signal(SIGINT, oldintr);
+ code = -1;
+ return;
+ }
+ }
+ else if (runique && (local = gunique(local)) == NULL) {
+ (void) signal(SIGINT, oldintr);
+ code = -1;
+ return;
+ }
+ }
+ if (!is_retr) {
+ if (curtype != TYPE_A)
+ changetype(TYPE_A, 0);
+ } else if (curtype != type)
+ changetype(type, 0);
+ if (initconn()) {
+ (void) signal(SIGINT, oldintr);
+ code = -1;
+ return;
+ }
+ if (setjmp(recvabort))
+ goto abort;
+ if (is_retr && restart_point &&
+ command("REST %ld", (long) restart_point) != CONTINUE)
+ return;
+ if (remote) {
+ if (command("%s %s", cmd, remote) != PRELIM) {
+ (void) signal(SIGINT, oldintr);
+ return;
+ }
+ } else {
+ if (command("%s", cmd) != PRELIM) {
+ (void) signal(SIGINT, oldintr);
+ return;
+ }
+ }
+ din = dataconn("r");
+ if (din == NULL)
+ goto abort;
+ if (strcmp(local, "-") == 0)
+ fout = stdout;
+ else if (*local == '|') {
+ oldintp = signal(SIGPIPE, SIG_IGN);
+ fout = popen(local + 1, "w");
+ if (fout == NULL) {
+ warn("%s", local+1);
+ goto abort;
+ }
+ closefunc = pclose;
+ } else {
+ fout = fopen(local, lmode);
+ if (fout == NULL) {
+ warn("local: %s", local);
+ goto abort;
+ }
+ closefunc = fclose;
+ }
+ if (fstat(fileno(fout), &st) < 0 || st.st_blksize == 0)
+ st.st_blksize = BUFSIZ;
+ if (st.st_blksize > bufsize) {
+ if (buf)
+ (void) free(buf);
+ buf = malloc((unsigned)st.st_blksize);
+ if (buf == NULL) {
+ warn("malloc");
+ bufsize = 0;
+ goto abort;
+ }
+ bufsize = st.st_blksize;
+ }
+ (void) gettimeofday(&start, (struct timezone *)0);
+ switch (curtype) {
+
+ case TYPE_I:
+ case TYPE_L:
+ if (restart_point &&
+ lseek(fileno(fout), restart_point, SEEK_SET) < 0) {
+ warn("local: %s", local);
+ if (closefunc != NULL)
+ (*closefunc)(fout);
+ return;
+ }
+ errno = d = 0;
+ while ((c = read(fileno(din), buf, bufsize)) > 0) {
+ if ((d = write(fileno(fout), buf, c)) != c)
+ break;
+ bytes += c;
+ if (hash) {
+ while (bytes >= hashbytes) {
+ (void) putchar('#');
+ hashbytes += HASHBYTES;
+ }
+ (void) fflush(stdout);
+ }
+ }
+ if (hash && bytes > 0) {
+ if (bytes < HASHBYTES)
+ (void) putchar('#');
+ (void) putchar('\n');
+ (void) fflush(stdout);
+ }
+ if (c < 0) {
+ if (errno != EPIPE)
+ warn("netin");
+ bytes = -1;
+ }
+ if (d < c) {
+ if (d < 0)
+ warn("local: %s", local);
+ else
+ warnx("%s: short write", local);
+ }
+ break;
+
+ case TYPE_A:
+ if (restart_point) {
+ int i, n, ch;
+
+ if (fseek(fout, 0L, SEEK_SET) < 0)
+ goto done;
+ n = restart_point;
+ for (i = 0; i++ < n;) {
+ if ((ch = getc(fout)) == EOF)
+ goto done;
+ if (ch == '\n')
+ i++;
+ }
+ if (fseek(fout, 0L, SEEK_CUR) < 0) {
+done:
+ warn("local: %s", local);
+ if (closefunc != NULL)
+ (*closefunc)(fout);
+ return;
+ }
+ }
+ while ((c = getc(din)) != EOF) {
+ if (c == '\n')
+ bare_lfs++;
+ while (c == '\r') {
+ while (hash && (bytes >= hashbytes)) {
+ (void) putchar('#');
+ (void) fflush(stdout);
+ hashbytes += HASHBYTES;
+ }
+ bytes++;
+ if ((c = getc(din)) != '\n' || tcrflag) {
+ if (ferror(fout))
+ goto break2;
+ (void) putc('\r', fout);
+ if (c == '\0') {
+ bytes++;
+ goto contin2;
+ }
+ if (c == EOF)
+ goto contin2;
+ }
+ }
+ (void) putc(c, fout);
+ bytes++;
+ contin2: ;
+ }
+break2:
+ if (bare_lfs) {
+ printf("WARNING! %d bare linefeeds received in ASCII mode\n", bare_lfs);
+ printf("File may not have transferred correctly.\n");
+ }
+ if (hash) {
+ if (bytes < hashbytes)
+ (void) putchar('#');
+ (void) putchar('\n');
+ (void) fflush(stdout);
+ }
+ if (ferror(din)) {
+ if (errno != EPIPE)
+ warn("netin");
+ bytes = -1;
+ }
+ if (ferror(fout))
+ warn("local: %s", local);
+ break;
+ }
+ if (closefunc != NULL)
+ (*closefunc)(fout);
+ (void) signal(SIGINT, oldintr);
+ if (oldintp)
+ (void) signal(SIGPIPE, oldintp);
+ (void) gettimeofday(&stop, (struct timezone *)0);
+ (void) fclose(din);
+ (void) getreply(0);
+ if (bytes > 0 && is_retr)
+ ptransfer("received", bytes, &start, &stop);
+ return;
+abort:
+
+/* abort using RFC959 recommended IP,SYNC sequence */
+
+ (void) gettimeofday(&stop, (struct timezone *)0);
+ if (oldintp)
+ (void) signal(SIGPIPE, oldintr);
+ (void) signal(SIGINT, SIG_IGN);
+ if (!cpend) {
+ code = -1;
+ (void) signal(SIGINT, oldintr);
+ return;
+ }
+
+ abort_remote(din);
+ code = -1;
+ if (data >= 0) {
+ (void) close(data);
+ data = -1;
+ }
+ if (closefunc != NULL && fout != NULL)
+ (*closefunc)(fout);
+ if (din)
+ (void) fclose(din);
+ if (bytes > 0)
+ ptransfer("received", bytes, &start, &stop);
+ (void) signal(SIGINT, oldintr);
+}
+
+/*
+ * Need to start a listen on the data channel before we send the command,
+ * otherwise the server's connect may fail.
+ */
+int
+initconn()
+{
+ char *p, *a;
+ int result, len, tmpno = 0;
+ int on = 1;
+
+noport:
+ data_addr = myctladdr;
+ if (sendport)
+ data_addr.sin_port = 0; /* let system pick one */
+ if (data != -1)
+ (void) close(data);
+ data = socket(AF_INET, SOCK_STREAM, 0);
+ if (data < 0) {
+ warn("socket");
+ if (tmpno)
+ sendport = 1;
+ return (1);
+ }
+ if (!sendport)
+ if (setsockopt(data, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof (on)) < 0) {
+ warn("setsockopt (reuse address)");
+ goto bad;
+ }
+ if (bind(data, (struct sockaddr *)&data_addr, sizeof (data_addr)) < 0) {
+ warn("bind");
+ goto bad;
+ }
+ if (options & SO_DEBUG &&
+ setsockopt(data, SOL_SOCKET, SO_DEBUG, (char *)&on, sizeof (on)) < 0)
+ warn("setsockopt (ignored)");
+ len = sizeof (data_addr);
+ if (getsockname(data, (struct sockaddr *)&data_addr, &len) < 0) {
+ warn("getsockname");
+ goto bad;
+ }
+ if (listen(data, 1) < 0)
+ warn("listen");
+ if (sendport) {
+ a = (char *)&data_addr.sin_addr;
+ p = (char *)&data_addr.sin_port;
+#define UC(b) (((int)b)&0xff)
+ result =
+ command("PORT %d,%d,%d,%d,%d,%d",
+ UC(a[0]), UC(a[1]), UC(a[2]), UC(a[3]),
+ UC(p[0]), UC(p[1]));
+ if (result == ERROR && sendport == -1) {
+ sendport = 0;
+ tmpno = 1;
+ goto noport;
+ }
+ return (result != COMPLETE);
+ }
+ if (tmpno)
+ sendport = 1;
+#ifdef IP_TOS
+ on = IPTOS_THROUGHPUT;
+ if (setsockopt(data, IPPROTO_IP, IP_TOS, (char *)&on, sizeof(int)) < 0)
+ warn("setsockopt TOS (ignored)");
+#endif
+ return (0);
+bad:
+ (void) close(data), data = -1;
+ if (tmpno)
+ sendport = 1;
+ return (1);
+}
+
+FILE *
+dataconn(lmode)
+ char *lmode;
+{
+ struct sockaddr_in from;
+ int s, fromlen = sizeof (from), tos;
+
+ s = accept(data, (struct sockaddr *) &from, &fromlen);
+ if (s < 0) {
+ warn("accept");
+ (void) close(data), data = -1;
+ return (NULL);
+ }
+ (void) close(data);
+ data = s;
+#ifdef IP_TOS
+ tos = IPTOS_THROUGHPUT;
+ if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos, sizeof(int)) < 0)
+ warn("setsockopt TOS (ignored)");
+#endif
+ return (fdopen(data, lmode));
+}
+
+void
+ptransfer(direction, bytes, t0, t1)
+ char *direction;
+ long bytes;
+ struct timeval *t0, *t1;
+{
+ struct timeval td;
+ float s, bs;
+
+ if (verbose) {
+ tvsub(&td, t1, t0);
+ s = td.tv_sec + (td.tv_usec / 1000000.);
+#define nz(x) ((x) == 0 ? 1 : (x))
+ bs = bytes / nz(s);
+ printf("%ld bytes %s in %.2g seconds (%.2g Kbytes/s)\n",
+ bytes, direction, s, bs / 1024.);
+ }
+}
+
+/*
+void
+tvadd(tsum, t0)
+ struct timeval *tsum, *t0;
+{
+
+ tsum->tv_sec += t0->tv_sec;
+ tsum->tv_usec += t0->tv_usec;
+ if (tsum->tv_usec > 1000000)
+ tsum->tv_sec++, tsum->tv_usec -= 1000000;
+}
+*/
+
+void
+tvsub(tdiff, t1, t0)
+ struct timeval *tdiff, *t1, *t0;
+{
+
+ tdiff->tv_sec = t1->tv_sec - t0->tv_sec;
+ tdiff->tv_usec = t1->tv_usec - t0->tv_usec;
+ if (tdiff->tv_usec < 0)
+ tdiff->tv_sec--, tdiff->tv_usec += 1000000;
+}
+
+void
+psabort()
+{
+
+ abrtflag++;
+}
+
+void
+pswitch(flag)
+ int flag;
+{
+ sig_t oldintr;
+ static struct comvars {
+ int connect;
+ char name[MAXHOSTNAMELEN];
+ struct sockaddr_in mctl;
+ struct sockaddr_in hctl;
+ FILE *in;
+ FILE *out;
+ int tpe;
+ int curtpe;
+ int cpnd;
+ int sunqe;
+ int runqe;
+ int mcse;
+ int ntflg;
+ char nti[17];
+ char nto[17];
+ int mapflg;
+ char mi[MAXPATHLEN];
+ char mo[MAXPATHLEN];
+ } proxstruct, tmpstruct;
+ struct comvars *ip, *op;
+
+ abrtflag = 0;
+ oldintr = signal(SIGINT, psabort);
+ if (flag) {
+ if (proxy)
+ return;
+ ip = &tmpstruct;
+ op = &proxstruct;
+ proxy++;
+ } else {
+ if (!proxy)
+ return;
+ ip = &proxstruct;
+ op = &tmpstruct;
+ proxy = 0;
+ }
+ ip->connect = connected;
+ connected = op->connect;
+ if (hostname) {
+ (void) strncpy(ip->name, hostname, sizeof(ip->name) - 1);
+ ip->name[strlen(ip->name)] = '\0';
+ } else
+ ip->name[0] = 0;
+ hostname = op->name;
+ ip->hctl = hisctladdr;
+ hisctladdr = op->hctl;
+ ip->mctl = myctladdr;
+ myctladdr = op->mctl;
+ ip->in = cin;
+ cin = op->in;
+ ip->out = cout;
+ cout = op->out;
+ ip->tpe = type;
+ type = op->tpe;
+ ip->curtpe = curtype;
+ curtype = op->curtpe;
+ ip->cpnd = cpend;
+ cpend = op->cpnd;
+ ip->sunqe = sunique;
+ sunique = op->sunqe;
+ ip->runqe = runique;
+ runique = op->runqe;
+ ip->mcse = mcase;
+ mcase = op->mcse;
+ ip->ntflg = ntflag;
+ ntflag = op->ntflg;
+ (void) strncpy(ip->nti, ntin, 16);
+ (ip->nti)[strlen(ip->nti)] = '\0';
+ (void) strcpy(ntin, op->nti);
+ (void) strncpy(ip->nto, ntout, 16);
+ (ip->nto)[strlen(ip->nto)] = '\0';
+ (void) strcpy(ntout, op->nto);
+ ip->mapflg = mapflag;
+ mapflag = op->mapflg;
+ (void) strncpy(ip->mi, mapin, MAXPATHLEN - 1);
+ (ip->mi)[strlen(ip->mi)] = '\0';
+ (void) strcpy(mapin, op->mi);
+ (void) strncpy(ip->mo, mapout, MAXPATHLEN - 1);
+ (ip->mo)[strlen(ip->mo)] = '\0';
+ (void) strcpy(mapout, op->mo);
+ (void) signal(SIGINT, oldintr);
+ if (abrtflag) {
+ abrtflag = 0;
+ (*oldintr)(SIGINT);
+ }
+}
+
+void
+abortpt()
+{
+
+ printf("\n");
+ (void) fflush(stdout);
+ ptabflg++;
+ mflag = 0;
+ abrtflag = 0;
+ longjmp(ptabort, 1);
+}
+
+void
+proxtrans(cmd, local, remote)
+ char *cmd, *local, *remote;
+{
+ sig_t oldintr;
+ int secndflag = 0, prox_type, nfnd;
+ char *cmd2;
+ struct fd_set mask;
+
+ if (strcmp(cmd, "RETR"))
+ cmd2 = "RETR";
+ else
+ cmd2 = runique ? "STOU" : "STOR";
+ if ((prox_type = type) == 0) {
+ if (unix_server && unix_proxy)
+ prox_type = TYPE_I;
+ else
+ prox_type = TYPE_A;
+ }
+ if (curtype != prox_type)
+ changetype(prox_type, 1);
+ if (command("PASV") != COMPLETE) {
+ printf("proxy server does not support third party transfers.\n");
+ return;
+ }
+ pswitch(0);
+ if (!connected) {
+ printf("No primary connection\n");
+ pswitch(1);
+ code = -1;
+ return;
+ }
+ if (curtype != prox_type)
+ changetype(prox_type, 1);
+ if (command("PORT %s", pasv) != COMPLETE) {
+ pswitch(1);
+ return;
+ }
+ if (setjmp(ptabort))
+ goto abort;
+ oldintr = signal(SIGINT, abortpt);
+ if (command("%s %s", cmd, remote) != PRELIM) {
+ (void) signal(SIGINT, oldintr);
+ pswitch(1);
+ return;
+ }
+ sleep(2);
+ pswitch(1);
+ secndflag++;
+ if (command("%s %s", cmd2, local) != PRELIM)
+ goto abort;
+ ptflag++;
+ (void) getreply(0);
+ pswitch(0);
+ (void) getreply(0);
+ (void) signal(SIGINT, oldintr);
+ pswitch(1);
+ ptflag = 0;
+ printf("local: %s remote: %s\n", local, remote);
+ return;
+abort:
+ (void) signal(SIGINT, SIG_IGN);
+ ptflag = 0;
+ if (strcmp(cmd, "RETR") && !proxy)
+ pswitch(1);
+ else if (!strcmp(cmd, "RETR") && proxy)
+ pswitch(0);
+ if (!cpend && !secndflag) { /* only here if cmd = "STOR" (proxy=1) */
+ if (command("%s %s", cmd2, local) != PRELIM) {
+ pswitch(0);
+ if (cpend)
+ abort_remote((FILE *) NULL);
+ }
+ pswitch(1);
+ if (ptabflg)
+ code = -1;
+ (void) signal(SIGINT, oldintr);
+ return;
+ }
+ if (cpend)
+ abort_remote((FILE *) NULL);
+ pswitch(!proxy);
+ if (!cpend && !secndflag) { /* only if cmd = "RETR" (proxy=1) */
+ if (command("%s %s", cmd2, local) != PRELIM) {
+ pswitch(0);
+ if (cpend)
+ abort_remote((FILE *) NULL);
+ pswitch(1);
+ if (ptabflg)
+ code = -1;
+ (void) signal(SIGINT, oldintr);
+ return;
+ }
+ }
+ if (cpend)
+ abort_remote((FILE *) NULL);
+ pswitch(!proxy);
+ if (cpend) {
+ FD_ZERO(&mask);
+ FD_SET(fileno(cin), &mask);
+ if ((nfnd = empty(&mask, 10)) <= 0) {
+ if (nfnd < 0) {
+ warn("abort");
+ }
+ if (ptabflg)
+ code = -1;
+ lostpeer();
+ }
+ (void) getreply(0);
+ (void) getreply(0);
+ }
+ if (proxy)
+ pswitch(0);
+ pswitch(1);
+ if (ptabflg)
+ code = -1;
+ (void) signal(SIGINT, oldintr);
+}
+
+void
+reset(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct fd_set mask;
+ int nfnd = 1;
+
+ FD_ZERO(&mask);
+ while (nfnd > 0) {
+ FD_SET(fileno(cin), &mask);
+ if ((nfnd = empty(&mask,0)) < 0) {
+ warn("reset");
+ code = -1;
+ lostpeer();
+ }
+ else if (nfnd) {
+ (void) getreply(0);
+ }
+ }
+}
+
+char *
+gunique(local)
+ char *local;
+{
+ static char new[MAXPATHLEN];
+ char *cp = strrchr(local, '/');
+ int d, count=0;
+ char ext = '1';
+
+ if (cp)
+ *cp = '\0';
+ d = access(cp ? local : ".", 2);
+ if (cp)
+ *cp = '/';
+ if (d < 0) {
+ warn("local: %s", local);
+ return ((char *) 0);
+ }
+ (void) strcpy(new, local);
+ cp = new + strlen(new);
+ *cp++ = '.';
+ while (!d) {
+ if (++count == 100) {
+ printf("runique: can't find unique file name.\n");
+ return ((char *) 0);
+ }
+ *cp++ = ext;
+ *cp = '\0';
+ if (ext == '9')
+ ext = '0';
+ else
+ ext++;
+ if ((d = access(new, 0)) < 0)
+ break;
+ if (ext != '0')
+ cp--;
+ else if (*(cp - 2) == '.')
+ *(cp - 1) = '1';
+ else {
+ *(cp - 2) = *(cp - 2) + 1;
+ cp--;
+ }
+ }
+ return (new);
+}
+
+void
+abort_remote(din)
+ FILE *din;
+{
+ char buf[BUFSIZ];
+ int nfnd;
+ struct fd_set mask;
+
+ /*
+ * send IAC in urgent mode instead of DM because 4.3BSD places oob mark
+ * after urgent byte rather than before as is protocol now
+ */
+ sprintf(buf, "%c%c%c", IAC, IP, IAC);
+ if (send(fileno(cout), buf, 3, MSG_OOB) != 3)
+ warn("abort");
+ fprintf(cout,"%cABOR\r\n", DM);
+ (void) fflush(cout);
+ FD_ZERO(&mask);
+ FD_SET(fileno(cin), &mask);
+ if (din) {
+ FD_SET(fileno(din), &mask);
+ }
+ if ((nfnd = empty(&mask, 10)) <= 0) {
+ if (nfnd < 0) {
+ warn("abort");
+ }
+ if (ptabflg)
+ code = -1;
+ lostpeer();
+ }
+ if (din && FD_ISSET(fileno(din), &mask)) {
+ while (read(fileno(din), buf, BUFSIZ) > 0)
+ /* LOOP */;
+ }
+ if (getreply(0) == ERROR && code == 552) {
+ /* 552 needed for nic style abort */
+ (void) getreply(0);
+ }
+ (void) getreply(0);
+}
OpenPOWER on IntegriCloud