--- /dev/null
+.\" $NetBSD: fetch.1,v 1.4 2009/02/07 15:25:51 wiz Exp $
+.\"-
+.\" Copyright (c) 2000-2004 Dag-Erling Coïdan Smørgrav
+.\" All rights reserved.
+.\" Portions Copyright (c) 1999 Massachusetts Institute of Technology; used
+.\" by permission.
+.\"
+.\" 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
+.\" in this position and unchanged.
+.\" 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. The name of the author may not be used to endorse or promote products
+.\" derived from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd February 5, 2009
+.Dt FETCH 1
+.Os
+.Sh NAME
+.Nm fetch
+.Nd retrieve a file by Uniform Resource Locator
+.Sh SYNOPSIS
+.Nm
+.Op Fl 146AFMRUadilmnqrsv
+.Op Fl B Ar bytes
+.Op Fl N Ar file
+.Op Fl o Ar file
+.Op Fl S Ar bytes
+.Op Fl T Ar seconds
+.Op Fl w Ar seconds
+.Op Ar URL ...
+.Sh DESCRIPTION
+The
+.Nm
+utility provides a command-line interface to the
+.Xr fetch 3
+library.
+Its purpose is to retrieve the file(s) pointed to by the URL(s) on the
+command line.
+.Pp
+The following options are available:
+.Bl -tag -width Fl
+.It Fl 1
+Stop and return exit code 0 at the first successfully retrieved file.
+.It Fl 4
+Forces
+.Nm
+to use IPv4 addresses only.
+.It Fl 6
+Forces
+.Nm
+to use IPv6 addresses only.
+.It Fl A
+Do not automatically follow
+.Dq temporary
+(302) redirects.
+Some broken Web sites will return a redirect instead of a not-found
+error when the requested object does not exist.
+.It Fl a
+Automatically retry the transfer upon soft failures.
+.It Fl B Ar bytes
+Specify the read buffer size in bytes.
+The default is 4096 bytes.
+Attempts to set a buffer size lower than this will be silently
+ignored.
+The number of reads actually performed is reported at verbosity level
+two or higher (see the
+.Fl v
+flag).
+.It Fl d
+Use a direct connection even if a proxy is configured.
+.It Fl F
+In combination with the
+.Fl r
+flag, forces a restart even if the local and remote files have
+different modification times.
+Implies
+.Fl R .
+.It Fl i
+Only fetch if it the output file is older than the referenced URL.
+This option is overriden by
+.Fl o Ar - .
+.It Fl l
+If the target is a file-scheme URL, make a symbolic link to the target
+rather than trying to copy it.
+.It Fl M
+.It Fl m
+Mirror mode: if the file already exists locally and has the same size
+and modification time as the remote file, it will not be fetched.
+Note that the
+.Fl m
+and
+.Fl r
+flags are mutually exclusive.
+.It Fl N Ar file
+Use
+.Ar file
+instead of
+.Pa ~/.netrc
+to look up login names and passwords for FTP sites.
+See
+.Xr ftp 1
+for a description of the file format.
+This feature is experimental.
+.It Fl n
+Do not preserve the modification time of the transferred file.
+.It Fl o Ar file
+Set the output file name to
+.Ar file .
+By default, a
+.Dq pathname
+is extracted from the specified URI, and
+its basename is used as the name of the output file.
+A
+.Ar file
+argument of
+.Sq Li \&-
+indicates that results are to be directed to the standard output.
+If the
+.Ar file
+argument is a directory, fetched file(s) will be placed within the
+directory, with name(s) selected as in the default behaviour.
+.It Fl q
+Quiet mode.
+.It Fl R
+The output files are precious, and should not be deleted under any
+circumstances, even if the transfer failed or was incomplete.
+.It Fl r
+Restart a previously interrupted transfer.
+Note that the
+.Fl m
+and
+.Fl r
+flags are mutually exclusive.
+.It Fl S Ar bytes
+Require the file size reported by the server to match the specified
+value.
+If it does not, a message is printed and the file is not fetched.
+If the server does not support reporting file sizes, this option is
+ignored and the file is fetched unconditionally.
+.It Fl s
+Print the size in bytes of each requested file, without fetching it.
+.It Fl T Ar seconds
+Set timeout value to
+.Ar seconds .
+Overrides the environment variables
+.Ev FTP_TIMEOUT
+for FTP transfers or
+.Ev HTTP_TIMEOUT
+for HTTP transfers if set.
+.It Fl U
+When using passive FTP, allocate the port for the data connection from
+the low (default) port range.
+See
+.Xr ip 4
+for details on how to specify which port range this corresponds to.
+.It Fl v
+Increase verbosity level.
+.It Fl w Ar seconds
+When the
+.Fl a
+flag is specified, wait this many seconds between successive retries.
+.El
+.Pp
+If
+.Nm
+receives a
+.Dv SIGINFO
+signal (see the
+.Cm status
+argument for
+.Xr stty 1 ) ,
+the current transfer rate statistics will be written to the
+standard error output, in the same format as the standard completion
+message.
+.Sh EXIT STATUS
+The
+.Nm
+command returns zero on success, or one on failure.
+If multiple URLs are listed on the command line,
+.Nm
+will attempt to retrieve each one of them in turn, and will return
+zero only if they were all successfully retrieved.
+.Sh ENVIRONMENT
+.Bl -tag -width HTTP_TIMEOUT
+.It Ev FTP_TIMEOUT
+Maximum time, in seconds, to wait before aborting an FTP connection.
+.It Ev HTTP_TIMEOUT
+Maximum time, in seconds, to wait before aborting an HTTP connection.
+.El
+.Pp
+See
+.Xr fetch 3
+for a description of additional environment variables, including
+.Ev FETCH_BIND_ADDRESS ,
+.Ev FTP_LOGIN ,
+.Ev FTP_PASSIVE_MODE ,
+.Ev FTP_PASSWORD ,
+.Ev FTP_PROXY ,
+.Ev ftp_proxy ,
+.Ev HTTP_AUTH ,
+.Ev HTTP_PROXY ,
+.Ev http_proxy ,
+.Ev HTTP_PROXY_AUTH ,
+.Ev HTTP_REFERER ,
+.Ev HTTP_USER_AGENT ,
+.Ev NETRC ,
+.Ev NO_PROXY
+and
+.Ev no_proxy .
+.Sh SEE ALSO
+.Xr fetch 3
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Fx 2.1.5 .
+This implementation first appeared in
+.Fx 4.1 .
+.Sh AUTHORS
+.An -nosplit
+The original implementation of
+.Nm
+was done by
+.An Jean-Marc Zucconi Aq jmz@FreeBSD.org .
+It was extensively re-worked for
+.Fx 2.2
+by
+.An Garrett Wollman Aq wollman@FreeBSD.org ,
+and later completely rewritten to use the
+.Xr fetch 3
+library by
+.An Dag-Erling Sm\(/orgrav Aq des@FreeBSD.org .
+.Sh NOTES
+The
+.Fl b
+and
+.Fl t
+options are no longer supported and will generate warnings.
+They were workarounds for bugs in other OSes which this implementation
+does not trigger.
+.Pp
+One cannot both use the
+.Fl h ,
+.Fl c ,
+and
+.Fl f
+options and specify URLs on the command line.
--- /dev/null
+/*-
+ * Copyright (c) 2000-2004 Dag-Erling Coïdan Smørgrav
+ * 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
+ * in this position and unchanged.
+ * 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. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+#if !defined(NETBSD) && !defined(__minix)
+#include <nbcompat.h>
+#endif
+
+#if HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+#if HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+#if HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#if HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#if HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#if HAVE_UTIME_H
+#include <utime.h>
+#endif
+#include <ctype.h>
+#if HAVE_ERR_H
+#include <err.h>
+#endif
+#include <errno.h>
+#include <signal.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#if HAVE_TERMIOS_H
+#include <termios.h>
+#endif
+#include <unistd.h>
+
+#include <fetch.h>
+
+#if HAVE_SYSEXITS_H
+#include <sysexits.h>
+#endif
+
+#ifndef EX_USAGE
+#define EX_USAGE 64
+#endif
+
+#ifndef EX_IOERR
+#define EX_IOERR 74
+#endif
+
+#define MINBUFSIZE 4096
+
+/* Option flags */
+int A_flag; /* -A: do not follow 302 redirects */
+int a_flag; /* -a: auto retry */
+off_t B_size; /* -B: buffer size */
+int d_flag; /* -d: direct connection */
+int F_flag; /* -F: restart without checking mtime */
+int i_flag; /* -i: fetch file if modified */
+int l_flag; /* -l: link rather than copy file: URLs */
+int m_flag; /* -[Mm]: mirror mode */
+char *N_filename; /* -N: netrc file name */
+int n_flag; /* -n: do not preserve modification time */
+int o_flag; /* -o: specify output file */
+int o_directory; /* output file is a directory */
+char *o_filename; /* name of output file */
+int o_stdout; /* output file is stdout */
+int once_flag; /* -1: stop at first successful file */
+int R_flag; /* -R: don't delete partially transferred files */
+int r_flag; /* -r: restart previously interrupted transfer */
+off_t S_size; /* -S: require size to match */
+int s_flag; /* -s: show size, don't fetch */
+long T_secs = 120; /* -T: transfer timeout in seconds */
+int U_flag; /* -U: do not use high ports */
+int v_level = 1; /* -v: verbosity level */
+int v_tty; /* stdout is a tty */
+pid_t pgrp; /* our process group */
+long w_secs; /* -w: retry delay */
+int family = PF_UNSPEC; /* -[46]: address family to use */
+
+volatile int sigalrm; /* SIGALRM received */
+#ifdef SIGINFO
+volatile int siginfo; /* SIGINFO received */
+#endif
+volatile int sigint; /* SIGINT received */
+
+long ftp_timeout; /* default timeout for FTP transfers */
+long http_timeout; /* default timeout for HTTP transfers */
+char *buf; /* transfer buffer */
+
+
+/*
+ * Signal handler
+ */
+static void
+sig_handler(int sig)
+{
+ switch (sig) {
+ case SIGALRM:
+ fetchRestartCalls = 0;
+ sigalrm = 1;
+ break;
+#ifdef SIGINFO
+ case SIGINFO:
+ siginfo = 1;
+ break;
+#endif
+ case SIGINT:
+ fetchRestartCalls = 0;
+ sigint = 1;
+ break;
+ }
+}
+
+struct xferstat {
+ char name[64];
+ struct timeval start;
+ struct timeval last;
+ off_t size;
+ off_t offset;
+ off_t rcvd;
+};
+
+/*
+ * Compute and display ETA
+ */
+static const char *
+stat_eta(struct xferstat *xs)
+{
+ static char str[16];
+ long elapsed, eta;
+ off_t received, expected;
+
+ elapsed = xs->last.tv_sec - xs->start.tv_sec;
+ received = xs->rcvd - xs->offset;
+ expected = xs->size - xs->rcvd;
+ eta = (long)((double)elapsed * expected / received);
+ if (eta > 3600)
+ snprintf(str, sizeof str, "%02ldh%02ldm",
+ eta / 3600, (eta % 3600) / 60);
+ else
+ snprintf(str, sizeof str, "%02ldm%02lds",
+ eta / 60, eta % 60);
+ return (str);
+}
+
+/*
+ * Format a number as "xxxx YB" where Y is ' ', 'k', 'M'...
+ */
+static const char *prefixes = " kMGTP";
+static const char *
+stat_bytes(off_t bytes)
+{
+ static char str[16];
+ const char *prefix = prefixes;
+
+ while (bytes > 9999 && prefix[1] != '\0') {
+ bytes /= 1024;
+ prefix++;
+ }
+ snprintf(str, sizeof str, "%4jd %cB", (intmax_t)bytes, *prefix);
+ return (str);
+}
+
+/*
+ * Compute and display transfer rate
+ */
+static const char *
+stat_bps(struct xferstat *xs)
+{
+ static char str[16];
+ double delta, bps;
+
+ delta = (xs->last.tv_sec + (xs->last.tv_usec / 1.e6))
+ - (xs->start.tv_sec + (xs->start.tv_usec / 1.e6));
+ if (delta == 0.0) {
+ snprintf(str, sizeof str, "?? Bps");
+ } else {
+ bps = (xs->rcvd - xs->offset) / delta;
+ snprintf(str, sizeof str, "%sps", stat_bytes((off_t)bps));
+ }
+ return (str);
+}
+
+/*
+ * Update the stats display
+ */
+static void
+stat_display(struct xferstat *xs, int force)
+{
+ struct timeval now;
+ int ctty_pgrp;
+
+ /* Minix returns "Not a typewriter error" */
+#if defined(TIOCGPGRP) && !defined(__minix)
+ /* check if we're the foreground process */
+ if (ioctl(STDERR_FILENO, TIOCGPGRP, &ctty_pgrp) == -1 ||
+ (pid_t)ctty_pgrp != pgrp)
+ return;
+#endif
+
+ gettimeofday(&now, NULL);
+ if (!force && now.tv_sec <= xs->last.tv_sec)
+ return;
+ xs->last = now;
+
+ fprintf(stderr, "\r%-46.46s", xs->name);
+ if (xs->size <= 0) {
+#if HAVE_SETPROCTITLE
+ setproctitle("%s [%s]", xs->name, stat_bytes(xs->rcvd));
+#endif
+ fprintf(stderr, " %s", stat_bytes(xs->rcvd));
+ } else {
+#if HAVE_SETPROCTITLE
+ setproctitle("%s [%d%% of %s]", xs->name,
+ (int)((100.0 * xs->rcvd) / xs->size),
+ stat_bytes(xs->size));
+#endif
+ fprintf(stderr, "%3d%% of %s",
+ (int)((100.0 * xs->rcvd) / xs->size),
+ stat_bytes(xs->size));
+ }
+ fprintf(stderr, " %s", stat_bps(xs));
+ if (xs->size > 0 && xs->rcvd > 0 &&
+ xs->last.tv_sec >= xs->start.tv_sec + 10)
+ fprintf(stderr, " %s", stat_eta(xs));
+ fflush(stderr);
+}
+
+/*
+ * Initialize the transfer statistics
+ */
+static void
+stat_start(struct xferstat *xs, const char *name, off_t size, off_t offset)
+{
+ snprintf(xs->name, sizeof xs->name, "%s", name);
+ gettimeofday(&xs->start, NULL);
+ xs->last.tv_sec = xs->last.tv_usec = 0;
+ xs->size = size;
+ xs->offset = offset;
+ xs->rcvd = offset;
+ if (v_tty && v_level > 0)
+ stat_display(xs, 1);
+ else if (v_level > 0)
+ fprintf(stderr, "%-46s", xs->name);
+}
+
+/*
+ * Update the transfer statistics
+ */
+static void
+stat_update(struct xferstat *xs, off_t rcvd)
+{
+ xs->rcvd = rcvd;
+ if (v_tty && v_level > 0)
+ stat_display(xs, 0);
+}
+
+/*
+ * Finalize the transfer statistics
+ */
+static void
+stat_end(struct xferstat *xs)
+{
+ gettimeofday(&xs->last, NULL);
+ if (v_tty && v_level > 0) {
+ stat_display(xs, 1);
+ putc('\n', stderr);
+ } else if (v_level > 0) {
+ fprintf(stderr, " %s %s\n",
+ stat_bytes(xs->size), stat_bps(xs));
+ }
+}
+
+#if HAVE_TERMIOS_H && !defined(PREFER_GETPASS)
+static int
+read_password(const char *prompt, char *pwbuf, size_t pwbuf_len)
+{
+ struct termios tios;
+ tcflag_t saved_flags;
+ int nopwd;
+
+ fprintf(stderr, prompt);
+ if (tcgetattr(STDIN_FILENO, &tios) != 0)
+ return (fgets(pwbuf, pwbuf_len, stdin) == NULL);
+
+ saved_flags = tios.c_lflag;
+ tios.c_lflag &= ~ECHO;
+ tios.c_lflag |= ECHONL|ICANON;
+#ifndef __minix
+ tcsetattr(STDIN_FILENO, TCSAFLUSH|TCSASOFT, &tios);
+#else
+ tcsetattr(STDIN_FILENO, TCSAFLUSH, &tios);
+#endif
+ nopwd = (fgets(pwbuf, pwbuf_len, stdin) == NULL);
+ tios.c_lflag = saved_flags;
+#ifndef __minix
+ tcsetattr(STDIN_FILENO, TCSANOW|TCSASOFT, &tios);
+#else
+ tcsetattr(STDIN_FILENO, TCSANOW, &tios);
+#endif
+
+ return nopwd;
+}
+#elif HAVE_GETPASSPHRASE || HAVE_GETPASS
+static int
+read_password(const char *prompt, char *pwbuf, size_t pwbuf_len)
+{
+ char *pass;
+
+#if HAVE_GETPASSPHRASE && !defined(PREFER_GETPASS)
+ pass = getpassphrase(prompt);
+#else
+ pass = getpass(prompt);
+#endif
+ if (pass == NULL || strlen(pass) >= pwbuf_len)
+ return 1;
+ strcpy(pwbuf, pass);
+ return 0;
+}
+#else
+static int
+read_password(const char *prompt, char *pwbuf, size_t pwbuf_len)
+{
+
+ fprintf(stderr, prompt);
+ return (fgets(pwbuf, pwbuf_len, stdin) == NULL);
+}
+#endif
+
+/*
+ * Ask the user for authentication details
+ */
+static int
+query_auth(struct url *URL)
+{
+ int i, nopwd;
+
+ fprintf(stderr, "Authentication required for <%s://%s:%d/>!\n",
+ URL->scheme, URL->host, URL->port);
+
+ fprintf(stderr, "Login: ");
+ if (fgets(URL->user, sizeof URL->user, stdin) == NULL)
+ return (-1);
+ for (i = strlen(URL->user); i >= 0; --i)
+ if (URL->user[i] == '\r' || URL->user[i] == '\n')
+ URL->user[i] = '\0';
+
+ nopwd = read_password("Password: ", URL->pwd, sizeof(URL->pwd));
+
+ if (nopwd)
+ return (-1);
+ for (i = strlen(URL->pwd); i >= 0; --i)
+ if (URL->pwd[i] == '\r' || URL->pwd[i] == '\n')
+ URL->pwd[i] = '\0';
+
+ return (0);
+}
+
+/*
+ * Fetch a file
+ */
+static int
+fetch(char *URL, const char *path)
+{
+ struct url *url;
+ struct url_stat us;
+ struct stat sb, nsb;
+ struct xferstat xs;
+ FILE *of;
+ fetchIO *f;
+ size_t size, wr;
+ ssize_t ssize;
+ off_t count;
+ char flags[8];
+ char *tmppath;
+ int r;
+ unsigned timeout;
+ char *ptr;
+
+ f = NULL;
+ of = NULL;
+ tmppath = NULL;
+
+ timeout = 0;
+ *flags = 0;
+ count = 0;
+
+ /* set verbosity level */
+ if (v_level > 1)
+ strcat(flags, "v");
+ if (v_level > 2)
+ fetchDebug = 1;
+
+ /* parse URL */
+ if ((url = fetchParseURL(URL)) == NULL) {
+ warnx("%s: parse error", URL);
+ goto failure;
+ }
+
+ /* if no scheme was specified, take a guess */
+ if (!*url->scheme) {
+ if (!*url->host)
+ strcpy(url->scheme, SCHEME_FILE);
+ else if (strncasecmp(url->host, "ftp.", 4) == 0)
+ strcpy(url->scheme, SCHEME_FTP);
+ else if (strncasecmp(url->host, "www.", 4) == 0)
+ strcpy(url->scheme, SCHEME_HTTP);
+ }
+
+ /* common flags */
+ switch (family) {
+ case PF_INET:
+ strcat(flags, "4");
+ break;
+#ifndef __minix
+ case PF_INET6:
+ strcat(flags, "6");
+ break;
+#endif
+ }
+
+ /* Protocol independent flags */
+ if (i_flag) {
+ if (stat(path, &sb) == 0) {
+ url->last_modified = sb.st_mtime;
+ strcat(flags, "i");
+ } else if (errno != ENOENT) {
+ warn("%s: stat()", path);
+ goto failure;
+ }
+ }
+
+ /* FTP specific flags */
+ if (strcmp(url->scheme, SCHEME_FTP) == 0) {
+ if (d_flag)
+ strcat(flags, "d");
+ if (U_flag)
+ strcat(flags, "l");
+ 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");
+ 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 */
+#ifndef __minix
+ 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);
+ }
+#else
+ if (!n_flag && us.mtime && !o_stdout && of != NULL &&
+ (stat(path, &sb) != -1) && sb.st_mode & S_IFREG) {
+ struct utimbuf ut;
+
+ fflush(of);
+ ut.actime = (us.atime ? us.atime : us.mtime);
+ ut.modtime = us.mtime;
+
+ if (utime(tmppath ? tmppath : path, &ut))
+ warn("%s: utime()", tmppath ? tmppath : path);
+ }
+#endif
+
+ /* 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);
+}