1132 lines
25 KiB
C
1132 lines
25 KiB
C
/*-
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* Copyright (c) 2000-2004 Dag-Erling Coïdan Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#if !defined(NETBSD) && !defined(__minix)
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#include <nbcompat.h>
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#endif
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#if HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#if HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#endif
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#if HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#if HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#if HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#if HAVE_UTIME_H
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#include <utime.h>
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#endif
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#include <ctype.h>
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#if HAVE_ERR_H
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#include <err.h>
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#endif
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#include <errno.h>
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#include <signal.h>
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#if HAVE_STDINT_H
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#include <stdint.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#if HAVE_TERMIOS_H
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#include <termios.h>
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#endif
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#include <unistd.h>
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#include <fetch.h>
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#if HAVE_SYSEXITS_H
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#include <sysexits.h>
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#endif
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#ifndef EX_USAGE
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#define EX_USAGE 64
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#endif
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#ifndef EX_IOERR
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#define EX_IOERR 74
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#endif
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#define MINBUFSIZE 4096
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/* Option flags */
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int A_flag; /* -A: do not follow 302 redirects */
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int a_flag; /* -a: auto retry */
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off_t B_size; /* -B: buffer size */
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int d_flag; /* -d: direct connection */
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int F_flag; /* -F: restart without checking mtime */
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int i_flag; /* -i: fetch file if modified */
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int l_flag; /* -l: link rather than copy file: URLs */
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int m_flag; /* -[Mm]: mirror mode */
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char *N_filename; /* -N: netrc file name */
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int n_flag; /* -n: do not preserve modification time */
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int o_flag; /* -o: specify output file */
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int o_directory; /* output file is a directory */
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char *o_filename; /* name of output file */
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int o_stdout; /* output file is stdout */
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int once_flag; /* -1: stop at first successful file */
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int R_flag; /* -R: don't delete partially transferred files */
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int r_flag; /* -r: restart previously interrupted transfer */
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off_t S_size; /* -S: require size to match */
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int s_flag; /* -s: show size, don't fetch */
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long T_secs = 120; /* -T: transfer timeout in seconds */
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int U_flag; /* -U: do not use high ports */
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int v_level = 1; /* -v: verbosity level */
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int v_tty; /* stdout is a tty */
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pid_t pgrp; /* our process group */
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long w_secs; /* -w: retry delay */
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int family = PF_UNSPEC; /* -[46]: address family to use */
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volatile int sigalrm; /* SIGALRM received */
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#ifdef SIGINFO
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volatile int siginfo; /* SIGINFO received */
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#endif
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volatile int sigint; /* SIGINT received */
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long ftp_timeout; /* default timeout for FTP transfers */
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long http_timeout; /* default timeout for HTTP transfers */
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char *buf; /* transfer buffer */
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/*
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* Signal handler
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*/
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static void
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sig_handler(int sig)
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{
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switch (sig) {
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case SIGALRM:
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fetchRestartCalls = 0;
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sigalrm = 1;
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break;
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#ifdef SIGINFO
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case SIGINFO:
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siginfo = 1;
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break;
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#endif
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case SIGINT:
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fetchRestartCalls = 0;
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sigint = 1;
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break;
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}
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}
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struct xferstat {
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char name[64];
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struct timeval start;
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struct timeval last;
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off_t size;
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off_t offset;
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off_t rcvd;
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};
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/*
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* Compute and display ETA
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*/
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static const char *
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stat_eta(struct xferstat *xs)
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{
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static char str[16];
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long elapsed, eta;
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off_t received, expected;
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elapsed = xs->last.tv_sec - xs->start.tv_sec;
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received = xs->rcvd - xs->offset;
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expected = xs->size - xs->rcvd;
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eta = (long)((double)elapsed * expected / received);
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if (eta > 3600)
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snprintf(str, sizeof str, "%02ldh%02ldm",
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eta / 3600, (eta % 3600) / 60);
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else
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snprintf(str, sizeof str, "%02ldm%02lds",
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eta / 60, eta % 60);
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return (str);
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}
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/*
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* Format a number as "xxxx YB" where Y is ' ', 'k', 'M'...
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*/
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static const char *prefixes = " kMGTP";
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static const char *
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stat_bytes(off_t bytes)
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{
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static char str[16];
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const char *prefix = prefixes;
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while (bytes > 9999 && prefix[1] != '\0') {
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bytes /= 1024;
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prefix++;
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}
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snprintf(str, sizeof str, "%4jd %cB", (intmax_t)bytes, *prefix);
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return (str);
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}
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/*
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* Compute and display transfer rate
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*/
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static const char *
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stat_bps(struct xferstat *xs)
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{
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static char str[16];
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double delta, bps;
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delta = (xs->last.tv_sec + (xs->last.tv_usec / 1.e6))
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- (xs->start.tv_sec + (xs->start.tv_usec / 1.e6));
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if (delta == 0.0) {
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snprintf(str, sizeof str, "?? Bps");
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} else {
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bps = (xs->rcvd - xs->offset) / delta;
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snprintf(str, sizeof str, "%sps", stat_bytes((off_t)bps));
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}
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return (str);
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}
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/*
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* Update the stats display
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*/
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static void
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stat_display(struct xferstat *xs, int force)
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{
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struct timeval now;
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#if !defined(__minix)
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int ctty_pgrp;
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#endif /* !defined(__minix) */
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/* Minix returns "Not a typewriter error" */
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#if defined(TIOCGPGRP) && !defined(__minix)
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/* check if we're the foreground process */
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if (ioctl(STDERR_FILENO, TIOCGPGRP, &ctty_pgrp) == -1 ||
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(pid_t)ctty_pgrp != pgrp)
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return;
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#endif
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gettimeofday(&now, NULL);
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if (!force && now.tv_sec <= xs->last.tv_sec)
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return;
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xs->last = now;
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fprintf(stderr, "\r%-46.46s", xs->name);
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if (xs->size <= 0) {
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#if HAVE_SETPROCTITLE
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setproctitle("%s [%s]", xs->name, stat_bytes(xs->rcvd));
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#endif
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fprintf(stderr, " %s", stat_bytes(xs->rcvd));
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} else {
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#if HAVE_SETPROCTITLE
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setproctitle("%s [%d%% of %s]", xs->name,
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(int)((100.0 * xs->rcvd) / xs->size),
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stat_bytes(xs->size));
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#endif
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fprintf(stderr, "%3d%% of %s",
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(int)((100.0 * xs->rcvd) / xs->size),
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stat_bytes(xs->size));
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}
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fprintf(stderr, " %s", stat_bps(xs));
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if (xs->size > 0 && xs->rcvd > 0 &&
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xs->last.tv_sec >= xs->start.tv_sec + 10)
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fprintf(stderr, " %s", stat_eta(xs));
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fflush(stderr);
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}
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/*
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* Initialize the transfer statistics
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*/
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static void
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stat_start(struct xferstat *xs, const char *name, off_t size, off_t offset)
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{
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snprintf(xs->name, sizeof xs->name, "%s", name);
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gettimeofday(&xs->start, NULL);
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xs->last.tv_sec = xs->last.tv_usec = 0;
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xs->size = size;
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xs->offset = offset;
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xs->rcvd = offset;
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if (v_tty && v_level > 0)
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stat_display(xs, 1);
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else if (v_level > 0)
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fprintf(stderr, "%-46s", xs->name);
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}
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/*
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* Update the transfer statistics
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*/
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static void
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stat_update(struct xferstat *xs, off_t rcvd)
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{
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xs->rcvd = rcvd;
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if (v_tty && v_level > 0)
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stat_display(xs, 0);
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}
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/*
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* Finalize the transfer statistics
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*/
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static void
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stat_end(struct xferstat *xs)
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{
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gettimeofday(&xs->last, NULL);
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if (v_tty && v_level > 0) {
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stat_display(xs, 1);
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putc('\n', stderr);
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} else if (v_level > 0) {
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fprintf(stderr, " %s %s\n",
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stat_bytes(xs->size), stat_bps(xs));
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}
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}
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#if HAVE_TERMIOS_H && !defined(PREFER_GETPASS)
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static int
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read_password(const char *prompt, char *pwbuf, size_t pwbuf_len)
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{
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struct termios tios;
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tcflag_t saved_flags;
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int nopwd;
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fprintf(stderr, prompt);
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if (tcgetattr(STDIN_FILENO, &tios) != 0)
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return (fgets(pwbuf, pwbuf_len, stdin) == NULL);
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saved_flags = tios.c_lflag;
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tios.c_lflag &= ~ECHO;
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tios.c_lflag |= ECHONL|ICANON;
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#ifndef __minix
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tcsetattr(STDIN_FILENO, TCSAFLUSH|TCSASOFT, &tios);
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#else
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tcsetattr(STDIN_FILENO, TCSAFLUSH, &tios);
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#endif
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nopwd = (fgets(pwbuf, pwbuf_len, stdin) == NULL);
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tios.c_lflag = saved_flags;
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#ifndef __minix
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tcsetattr(STDIN_FILENO, TCSANOW|TCSASOFT, &tios);
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#else
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tcsetattr(STDIN_FILENO, TCSANOW, &tios);
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#endif
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return nopwd;
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}
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#elif HAVE_GETPASSPHRASE || HAVE_GETPASS
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static int
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read_password(const char *prompt, char *pwbuf, size_t pwbuf_len)
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{
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char *pass;
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#if HAVE_GETPASSPHRASE && !defined(PREFER_GETPASS)
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pass = getpassphrase(prompt);
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#else
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pass = getpass(prompt);
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#endif
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if (pass == NULL || strlen(pass) >= pwbuf_len)
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return 1;
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strcpy(pwbuf, pass);
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return 0;
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}
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#else
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static int
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read_password(const char *prompt, char *pwbuf, size_t pwbuf_len)
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{
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fprintf(stderr, prompt);
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return (fgets(pwbuf, pwbuf_len, stdin) == NULL);
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}
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#endif
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/*
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* Ask the user for authentication details
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*/
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static int
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query_auth(struct url *URL)
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{
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int i, nopwd;
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fprintf(stderr, "Authentication required for <%s://%s:%d/>!\n",
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URL->scheme, URL->host, URL->port);
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fprintf(stderr, "Login: ");
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if (fgets(URL->user, sizeof URL->user, stdin) == NULL)
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return (-1);
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for (i = strlen(URL->user); i >= 0; --i)
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if (URL->user[i] == '\r' || URL->user[i] == '\n')
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URL->user[i] = '\0';
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nopwd = read_password("Password: ", URL->pwd, sizeof(URL->pwd));
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if (nopwd)
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return (-1);
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for (i = strlen(URL->pwd); i >= 0; --i)
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if (URL->pwd[i] == '\r' || URL->pwd[i] == '\n')
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URL->pwd[i] = '\0';
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return (0);
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}
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|
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/*
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* Fetch a file
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*/
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static int
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fetch(char *URL, const char *path)
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{
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struct url *url;
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struct url_stat us;
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struct stat sb, nsb;
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struct xferstat xs;
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FILE *of;
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fetchIO *f;
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size_t size, wr;
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ssize_t ssize;
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off_t count;
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char flags[8];
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char *tmppath;
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int r;
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unsigned timeout;
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char *ptr;
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f = NULL;
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of = NULL;
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tmppath = NULL;
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timeout = 0;
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*flags = 0;
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count = 0;
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|
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/* set verbosity level */
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if (v_level > 1)
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strcat(flags, "v");
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if (v_level > 2)
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fetchDebug = 1;
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|
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/* parse URL */
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if ((url = fetchParseURL(URL)) == NULL) {
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warnx("%s: parse error", URL);
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goto failure;
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}
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|
|
|
/* if no scheme was specified, take a guess */
|
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if (!*url->scheme) {
|
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if (!*url->host)
|
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strcpy(url->scheme, SCHEME_FILE);
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else if (strncasecmp(url->host, "ftp.", 4) == 0)
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strcpy(url->scheme, SCHEME_FTP);
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else if (strncasecmp(url->host, "www.", 4) == 0)
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strcpy(url->scheme, SCHEME_HTTP);
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}
|
|
|
|
/* common flags */
|
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switch (family) {
|
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case PF_INET:
|
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strcat(flags, "4");
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break;
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#ifndef __minix
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case PF_INET6:
|
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strcat(flags, "6");
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break;
|
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#endif
|
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}
|
|
|
|
/* Protocol independent flags */
|
|
if (i_flag) {
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if (stat(path, &sb) == 0) {
|
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url->last_modified = sb.st_mtime;
|
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strcat(flags, "i");
|
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} else if (errno != ENOENT) {
|
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warn("%s: stat()", path);
|
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goto failure;
|
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}
|
|
}
|
|
|
|
/* FTP specific flags */
|
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if (strcmp(url->scheme, SCHEME_FTP) == 0) {
|
|
if (d_flag)
|
|
strcat(flags, "d");
|
|
if (U_flag)
|
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strcat(flags, "l");
|
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timeout = T_secs ? T_secs : ftp_timeout;
|
|
}
|
|
|
|
/* HTTP specific flags */
|
|
if (strcmp(url->scheme, SCHEME_HTTP) == 0) {
|
|
if (d_flag)
|
|
strcat(flags, "d");
|
|
if (A_flag)
|
|
strcat(flags, "A");
|
|
timeout = T_secs ? T_secs : http_timeout;
|
|
}
|
|
|
|
/* set the protocol timeout. */
|
|
fetchTimeout = timeout;
|
|
|
|
/* just print size */
|
|
if (s_flag) {
|
|
if (timeout)
|
|
alarm(timeout);
|
|
r = fetchStat(url, &us, flags);
|
|
if (timeout)
|
|
alarm(0);
|
|
if (sigalrm || sigint)
|
|
goto signal;
|
|
if (r == -1) {
|
|
warnx("%s", fetchLastErrString);
|
|
goto failure;
|
|
}
|
|
if (us.size == -1)
|
|
printf("Unknown\n");
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|
else
|
|
printf("%jd\n", (intmax_t)us.size);
|
|
goto success;
|
|
}
|
|
|
|
/*
|
|
* If the -r flag was specified, we have to compare the local
|
|
* and remote files, so we should really do a fetchStat()
|
|
* first, but I know of at least one HTTP server that only
|
|
* sends the content size in response to GET requests, and
|
|
* leaves it out of replies to HEAD requests. Also, in the
|
|
* (frequent) case that the local and remote files match but
|
|
* the local file is truncated, we have sufficient information
|
|
* before the compare to issue a correct request. Therefore,
|
|
* we always issue a GET request as if we were sure the local
|
|
* file was a truncated copy of the remote file; we can drop
|
|
* the connection later if we change our minds.
|
|
*/
|
|
sb.st_size = -1;
|
|
if (!o_stdout) {
|
|
r = stat(path, &sb);
|
|
if (r == 0 && r_flag && S_ISREG(sb.st_mode)) {
|
|
url->offset = sb.st_size;
|
|
} else if (r == -1 || !S_ISREG(sb.st_mode)) {
|
|
/*
|
|
* Whatever value sb.st_size has now is either
|
|
* wrong (if stat(2) failed) or irrelevant (if the
|
|
* path does not refer to a regular file)
|
|
*/
|
|
sb.st_size = -1;
|
|
}
|
|
if (r == -1 && errno != ENOENT) {
|
|
warnx("%s: stat()", path);
|
|
goto failure;
|
|
}
|
|
}
|
|
|
|
/* start the transfer */
|
|
if (timeout)
|
|
alarm(timeout);
|
|
f = fetchXGet(url, &us, flags);
|
|
if (timeout)
|
|
alarm(0);
|
|
if (sigalrm || sigint)
|
|
goto signal;
|
|
if (f == NULL && i_flag && fetchLastErrCode == FETCH_UNCHANGED) {
|
|
/* URL was not modified, return OK. */
|
|
printf("%s: not modified\n", URL);
|
|
r = 0;
|
|
goto done;
|
|
}
|
|
if (f == NULL) {
|
|
warnx("%s: %s", URL, fetchLastErrString);
|
|
goto failure;
|
|
}
|
|
if (sigint)
|
|
goto signal;
|
|
|
|
/* check that size is as expected */
|
|
if (S_size) {
|
|
if (us.size == -1) {
|
|
warnx("%s: size unknown", URL);
|
|
} else if (us.size != S_size) {
|
|
warnx("%s: size mismatch: expected %jd, actual %jd",
|
|
URL, (intmax_t)S_size, (intmax_t)us.size);
|
|
goto failure;
|
|
}
|
|
}
|
|
|
|
/* symlink instead of copy */
|
|
if (l_flag && strcmp(url->scheme, "file") == 0 && !o_stdout) {
|
|
char *name = fetchUnquotePath(url);
|
|
if (name == NULL) {
|
|
warnx("Can't unquote URL");
|
|
goto failure;
|
|
}
|
|
if (symlink(name, path) == -1) {
|
|
warn("%s: symlink()", path);
|
|
free(name);
|
|
goto failure;
|
|
}
|
|
free(name);
|
|
goto success;
|
|
}
|
|
|
|
if (us.size == -1 && !o_stdout && v_level > 0)
|
|
warnx("%s: size of remote file is not known", URL);
|
|
if (v_level > 1) {
|
|
if (sb.st_size != -1)
|
|
fprintf(stderr, "local size / mtime: %jd / %ld\n",
|
|
(intmax_t)sb.st_size, (long)sb.st_mtime);
|
|
if (us.size != -1)
|
|
fprintf(stderr, "remote size / mtime: %jd / %ld\n",
|
|
(intmax_t)us.size, (long)us.mtime);
|
|
}
|
|
|
|
/* open output file */
|
|
if (o_stdout) {
|
|
/* output to stdout */
|
|
of = stdout;
|
|
} else if (r_flag && sb.st_size != -1) {
|
|
/* resume mode, local file exists */
|
|
if (!F_flag && us.mtime && sb.st_mtime != us.mtime) {
|
|
/* no match! have to refetch */
|
|
fetchIO_close(f);
|
|
/* if precious, warn the user and give up */
|
|
if (R_flag) {
|
|
warnx("%s: local modification time "
|
|
"does not match remote", path);
|
|
goto failure_keep;
|
|
}
|
|
} else if (us.size != -1) {
|
|
if (us.size == sb.st_size)
|
|
/* nothing to do */
|
|
goto success;
|
|
if (sb.st_size > us.size) {
|
|
/* local file too long! */
|
|
warnx("%s: local file (%jd bytes) is longer "
|
|
"than remote file (%jd bytes)", path,
|
|
(intmax_t)sb.st_size, (intmax_t)us.size);
|
|
goto failure;
|
|
}
|
|
/* we got it, open local file */
|
|
if ((of = fopen(path, "a")) == NULL) {
|
|
warn("%s: fopen()", path);
|
|
goto failure;
|
|
}
|
|
/* check that it didn't move under our feet */
|
|
if (fstat(fileno(of), &nsb) == -1) {
|
|
/* can't happen! */
|
|
warn("%s: fstat()", path);
|
|
goto failure;
|
|
}
|
|
if (nsb.st_dev != sb.st_dev ||
|
|
nsb.st_ino != nsb.st_ino ||
|
|
nsb.st_size != sb.st_size) {
|
|
warnx("%s: file has changed", URL);
|
|
fclose(of);
|
|
of = NULL;
|
|
sb = nsb;
|
|
}
|
|
}
|
|
} else if (m_flag && sb.st_size != -1) {
|
|
/* mirror mode, local file exists */
|
|
if (sb.st_size == us.size && sb.st_mtime == us.mtime)
|
|
goto success;
|
|
}
|
|
|
|
if (of == NULL) {
|
|
/*
|
|
* We don't yet have an output file; either this is a
|
|
* vanilla run with no special flags, or the local and
|
|
* remote files didn't match.
|
|
*/
|
|
|
|
if (url->offset > 0) {
|
|
/*
|
|
* We tried to restart a transfer, but for
|
|
* some reason gave up - so we have to restart
|
|
* from scratch if we want the whole file
|
|
*/
|
|
url->offset = 0;
|
|
if ((f = fetchXGet(url, &us, flags)) == NULL) {
|
|
warnx("%s: %s", URL, fetchLastErrString);
|
|
goto failure;
|
|
}
|
|
if (sigint)
|
|
goto signal;
|
|
}
|
|
|
|
/* construct a temp file name */
|
|
if (sb.st_size != -1 && S_ISREG(sb.st_mode)) {
|
|
#ifndef __minix
|
|
asprintf(&tmppath, "%s.fetch.XXXXXX", path);
|
|
#else
|
|
{
|
|
int len;
|
|
if((tmppath = malloc(sizeof(char)*MINBUFSIZE)) != NULL) {
|
|
len = snprintf(tmppath, MINBUFSIZE, "%s.fetch.XXXXXX", path);
|
|
if(len >= MINBUFSIZE) {
|
|
free(tmppath);
|
|
tmppath = NULL;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (tmppath != NULL) {
|
|
int fd;
|
|
|
|
fd = mkstemp(tmppath);
|
|
if (fd == -1) {
|
|
warn("%s: mkstemp failed", tmppath);
|
|
goto failure;
|
|
}
|
|
fchown(fd, sb.st_uid, sb.st_gid);
|
|
fchmod(fd, sb.st_mode & ALLPERMS);
|
|
of = fdopen(fd, "w");
|
|
if (of == NULL) {
|
|
close(fd);
|
|
unlink(tmppath);
|
|
free(tmppath);
|
|
tmppath = NULL;
|
|
}
|
|
}
|
|
}
|
|
if (of == NULL)
|
|
of = fopen(path, "w");
|
|
if (of == NULL) {
|
|
warn("%s: open()", path);
|
|
goto failure;
|
|
}
|
|
}
|
|
count = url->offset;
|
|
|
|
/* start the counter */
|
|
stat_start(&xs, path, us.size, count);
|
|
|
|
sigalrm = sigint = 0;
|
|
|
|
/* suck in the data */
|
|
#ifdef SIGINFO
|
|
siginfo = 0;
|
|
signal(SIGINFO, sig_handler);
|
|
#endif
|
|
while (!sigint) {
|
|
if (us.size != -1 && us.size - count < B_size &&
|
|
us.size - count >= 0)
|
|
size = us.size - count;
|
|
else
|
|
size = B_size;
|
|
#ifdef SIGINFO
|
|
if (siginfo) {
|
|
stat_display(&xs, 1);
|
|
siginfo = 0;
|
|
}
|
|
#else
|
|
/* Constant info is better than none. */
|
|
if (v_level) {
|
|
stat_display(&xs, 1);
|
|
}
|
|
#endif
|
|
if ((ssize = fetchIO_read(f, buf, B_size)) == 0)
|
|
break;
|
|
if (ssize == -1 && errno == EINTR)
|
|
continue;
|
|
if (ssize == -1)
|
|
break;
|
|
size = ssize;
|
|
stat_update(&xs, count += size);
|
|
for (ptr = buf; size > 0; ptr += wr, size -= wr) {
|
|
if ((wr = fwrite(ptr, 1, size, of)) < size) {
|
|
if (ferror(of) && errno == EINTR && !sigint)
|
|
clearerr(of);
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
if (size != 0)
|
|
break;
|
|
}
|
|
if (!sigalrm)
|
|
sigalrm = 0;
|
|
#ifdef SIGINFO
|
|
signal(SIGINFO, SIG_DFL);
|
|
#endif
|
|
|
|
stat_end(&xs);
|
|
|
|
/*
|
|
* If the transfer timed out or was interrupted, we still want to
|
|
* set the mtime in case the file is not removed (-r or -R) and
|
|
* the user later restarts the transfer.
|
|
*/
|
|
signal:
|
|
/* set mtime of local file */
|
|
if (!n_flag && us.mtime && !o_stdout && of != NULL &&
|
|
(stat(path, &sb) != -1) && sb.st_mode & S_IFREG) {
|
|
struct timeval tv[2];
|
|
|
|
fflush(of);
|
|
tv[0].tv_sec = (long)(us.atime ? us.atime : us.mtime);
|
|
tv[1].tv_sec = (long)us.mtime;
|
|
tv[0].tv_usec = tv[1].tv_usec = 0;
|
|
if (utimes(tmppath ? tmppath : path, tv))
|
|
warn("%s: utimes()", tmppath ? tmppath : path);
|
|
}
|
|
|
|
/* timed out or interrupted? */
|
|
if (fetchLastErrCode == FETCH_TIMEOUT)
|
|
sigalrm = 1;
|
|
if (sigalrm)
|
|
warnx("transfer timed out");
|
|
if (sigint) {
|
|
warnx("transfer interrupted");
|
|
goto failure;
|
|
}
|
|
|
|
/* timeout / interrupt before connection completley established? */
|
|
if (f == NULL)
|
|
goto failure;
|
|
|
|
if (!sigalrm && ferror(of)) {
|
|
/* check the status of our files */
|
|
warn("writing to %s failed", path);
|
|
goto failure;
|
|
}
|
|
|
|
/* did the transfer complete normally? */
|
|
if (us.size != -1 && count < us.size) {
|
|
warnx("%s appears to be truncated: %jd/%jd bytes",
|
|
path, (intmax_t)count, (intmax_t)us.size);
|
|
goto failure_keep;
|
|
}
|
|
|
|
/*
|
|
* If the transfer timed out and we didn't know how much to
|
|
* expect, assume the worst (i.e. we didn't get all of it)
|
|
*/
|
|
if (sigalrm && us.size == -1) {
|
|
warnx("%s may be truncated", path);
|
|
goto failure_keep;
|
|
}
|
|
|
|
success:
|
|
r = 0;
|
|
if (tmppath != NULL && rename(tmppath, path) == -1) {
|
|
warn("%s: rename()", path);
|
|
goto failure_keep;
|
|
}
|
|
goto done;
|
|
failure:
|
|
if (of && of != stdout && !R_flag && !r_flag)
|
|
if (stat(path, &sb) != -1 && (sb.st_mode & S_IFREG))
|
|
unlink(tmppath ? tmppath : path);
|
|
if (R_flag && tmppath != NULL && sb.st_size == -1)
|
|
rename(tmppath, path); /* ignore errors here */
|
|
failure_keep:
|
|
r = -1;
|
|
goto done;
|
|
done:
|
|
if (f)
|
|
fetchIO_close(f);
|
|
if (of && of != stdout)
|
|
fclose(of);
|
|
if (url)
|
|
fetchFreeURL(url);
|
|
if (tmppath != NULL)
|
|
free(tmppath);
|
|
return (r);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
#ifndef __minix
|
|
fprintf(stderr, "%s\n%s\n%s\n",
|
|
"usage: fetch [-146AFMPRUadilmnpqrsv] [-N netrc] [-o outputfile]",
|
|
" [-S bytes] [-B bytes] [-T seconds] [-w seconds]",
|
|
" [-h host -f file [-c dir] | URL ...]");
|
|
#else
|
|
fprintf(stderr, "%s\n%s\n%s\n",
|
|
"usage: fetch [-146AFMPRUadilmnpqrsv] [-N netrc] [-o outputfile]",
|
|
" [-S bytes] [-B bytes] [-T seconds] [-w seconds]",
|
|
" [-h host -f file [-c dir] | URL ...]");
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* Entry point
|
|
*/
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
struct stat sb;
|
|
struct sigaction sa;
|
|
const char *p, *s;
|
|
char *end, *q;
|
|
int c, e, r;
|
|
#ifndef __minix
|
|
while ((c = getopt(argc, argv,
|
|
"14AaB:dFilMmN:no:qRrS:sT:Uvw:")) != -1)
|
|
#else
|
|
while ((c = getopt(argc, argv,
|
|
"146AaB:dFilMmN:no:qRrS:sT:Uvw:")) != -1)
|
|
#endif
|
|
switch (c) {
|
|
case '1':
|
|
once_flag = 1;
|
|
break;
|
|
case '4':
|
|
family = PF_INET;
|
|
break;
|
|
#ifndef __minix
|
|
case '6':
|
|
family = PF_INET6;
|
|
break;
|
|
#endif
|
|
case 'A':
|
|
A_flag = 1;
|
|
break;
|
|
case 'a':
|
|
a_flag = 1;
|
|
break;
|
|
case 'B':
|
|
B_size = (off_t)strtol(optarg, &end, 10);
|
|
if (*optarg == '\0' || *end != '\0')
|
|
errx(1, "invalid buffer size (%s)", optarg);
|
|
break;
|
|
case 'd':
|
|
d_flag = 1;
|
|
break;
|
|
case 'F':
|
|
F_flag = 1;
|
|
break;
|
|
case 'i':
|
|
i_flag = 1;
|
|
break;
|
|
case 'l':
|
|
l_flag = 1;
|
|
break;
|
|
case 'o':
|
|
o_flag = 1;
|
|
o_filename = optarg;
|
|
break;
|
|
case 'M':
|
|
case 'm':
|
|
if (r_flag)
|
|
errx(1, "the -m and -r flags "
|
|
"are mutually exclusive");
|
|
m_flag = 1;
|
|
break;
|
|
case 'N':
|
|
N_filename = optarg;
|
|
break;
|
|
case 'n':
|
|
n_flag = 1;
|
|
break;
|
|
case 'q':
|
|
v_level = 0;
|
|
break;
|
|
case 'R':
|
|
R_flag = 1;
|
|
break;
|
|
case 'r':
|
|
if (m_flag)
|
|
errx(1, "the -m and -r flags "
|
|
"are mutually exclusive");
|
|
r_flag = 1;
|
|
break;
|
|
case 'S':
|
|
S_size = (off_t)strtol(optarg, &end, 10);
|
|
if (*optarg == '\0' || *end != '\0')
|
|
errx(1, "invalid size (%s)", optarg);
|
|
break;
|
|
case 's':
|
|
s_flag = 1;
|
|
break;
|
|
case 'T':
|
|
T_secs = strtol(optarg, &end, 10);
|
|
if (*optarg == '\0' || *end != '\0')
|
|
errx(1, "invalid timeout (%s)", optarg);
|
|
break;
|
|
case 'U':
|
|
U_flag = 1;
|
|
break;
|
|
case 'v':
|
|
v_level++;
|
|
break;
|
|
case 'w':
|
|
a_flag = 1;
|
|
w_secs = strtol(optarg, &end, 10);
|
|
if (*optarg == '\0' || *end != '\0')
|
|
errx(1, "invalid delay (%s)", optarg);
|
|
break;
|
|
default:
|
|
usage();
|
|
exit(EX_USAGE);
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (!argc) {
|
|
usage();
|
|
exit(EX_USAGE);
|
|
}
|
|
|
|
fetchConnectionCacheInit(10, 1);
|
|
|
|
/* allocate buffer */
|
|
if (B_size < MINBUFSIZE)
|
|
B_size = MINBUFSIZE;
|
|
if ((buf = malloc(B_size)) == NULL)
|
|
errx(1, "%s", strerror(ENOMEM));
|
|
|
|
/* timeouts */
|
|
if ((s = getenv("FTP_TIMEOUT")) != NULL) {
|
|
ftp_timeout = strtol(s, &end, 10);
|
|
if (*s == '\0' || *end != '\0' || ftp_timeout < 0) {
|
|
warnx("FTP_TIMEOUT (%s) is not a positive integer", s);
|
|
ftp_timeout = 0;
|
|
}
|
|
}
|
|
if ((s = getenv("HTTP_TIMEOUT")) != NULL) {
|
|
http_timeout = strtol(s, &end, 10);
|
|
if (*s == '\0' || *end != '\0' || http_timeout < 0) {
|
|
warnx("HTTP_TIMEOUT (%s) is not a positive integer", s);
|
|
http_timeout = 0;
|
|
}
|
|
}
|
|
|
|
/* signal handling */
|
|
sa.sa_flags = 0;
|
|
sa.sa_handler = sig_handler;
|
|
sigemptyset(&sa.sa_mask);
|
|
sigaction(SIGALRM, &sa, NULL);
|
|
sa.sa_flags = SA_RESETHAND;
|
|
sigaction(SIGINT, &sa, NULL);
|
|
|
|
/* output file */
|
|
if (o_flag) {
|
|
if (strcmp(o_filename, "-") == 0) {
|
|
o_stdout = 1;
|
|
if (i_flag) {
|
|
warnx("-i and -o - are incompatible, dropping -i");
|
|
i_flag = 0;
|
|
}
|
|
} else if (stat(o_filename, &sb) == -1) {
|
|
if (errno == ENOENT) {
|
|
if (argc > 1)
|
|
errx(EX_USAGE, "%s is not a directory",
|
|
o_filename);
|
|
} else {
|
|
err(EX_IOERR, "%s", o_filename);
|
|
}
|
|
} else {
|
|
if (sb.st_mode & S_IFDIR)
|
|
o_directory = 1;
|
|
}
|
|
}
|
|
|
|
/* check if output is to a tty (for progress report) */
|
|
v_tty = isatty(STDERR_FILENO);
|
|
if (v_tty)
|
|
pgrp = getpgrp();
|
|
|
|
r = 0;
|
|
|
|
/* authentication */
|
|
if (v_tty)
|
|
fetchAuthMethod = query_auth;
|
|
if (N_filename != NULL)
|
|
setenv("NETRC", N_filename, 1);
|
|
|
|
while (argc) {
|
|
if ((p = strrchr(*argv, '/')) == NULL)
|
|
p = *argv;
|
|
else
|
|
p++;
|
|
|
|
if (!*p)
|
|
p = "fetch.out";
|
|
|
|
fetchLastErrCode = 0;
|
|
|
|
if (o_flag) {
|
|
if (o_stdout) {
|
|
e = fetch(*argv, "-");
|
|
} else if (o_directory) {
|
|
#ifndef __minix
|
|
asprintf(&q, "%s/%s", o_filename, p);
|
|
#else
|
|
{
|
|
int len;
|
|
|
|
if ((q = malloc(sizeof(char)*MINBUFSIZE)) != NULL) {
|
|
len = snprintf(q, MINBUFSIZE, "%s/%s", o_filename, p);
|
|
if (len >= MINBUFSIZE) {
|
|
free(q);
|
|
q = NULL;
|
|
}
|
|
}else{
|
|
err(1, "Unable to allocate memory");
|
|
}
|
|
}
|
|
#endif
|
|
e = fetch(*argv, q);
|
|
free(q);
|
|
} else {
|
|
e = fetch(*argv, o_filename);
|
|
}
|
|
} else {
|
|
e = fetch(*argv, p);
|
|
}
|
|
|
|
if (sigint)
|
|
kill(getpid(), SIGINT);
|
|
|
|
if (e == 0 && once_flag)
|
|
exit(0);
|
|
|
|
if (e) {
|
|
r = 1;
|
|
if ((fetchLastErrCode
|
|
&& fetchLastErrCode != FETCH_UNAVAIL
|
|
&& fetchLastErrCode != FETCH_MOVED
|
|
&& fetchLastErrCode != FETCH_URL
|
|
&& fetchLastErrCode != FETCH_RESOLV
|
|
&& fetchLastErrCode != FETCH_UNKNOWN)) {
|
|
if (w_secs && v_level)
|
|
fprintf(stderr, "Waiting %ld seconds "
|
|
"before retrying\n", w_secs);
|
|
if (w_secs)
|
|
sleep(w_secs);
|
|
if (a_flag)
|
|
continue;
|
|
}
|
|
}
|
|
|
|
argc--, argv++;
|
|
}
|
|
|
|
exit(r);
|
|
}
|