/* $NetBSD: sftp.c,v 1.8 2001/06/23 19:37:41 itojun Exp $ */ /* * Copyright (c) 2001 Damien Miller. 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. * * 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. */ #include "includes.h" RCSID("$OpenBSD: sftp.c,v 1.18 2001/06/23 15:12:20 itojun Exp $"); /* XXX: commandline mode */ /* XXX: short-form remote directory listings (like 'ls -C') */ #include "buffer.h" #include "xmalloc.h" #include "log.h" #include "pathnames.h" #include "misc.h" #include "sftp.h" #include "sftp-common.h" #include "sftp-client.h" #include "sftp-int.h" char *ssh_program = _PATH_SSH_PROGRAM; FILE* infile; static void connect_to_server(char **args, int *in, int *out, pid_t *sshpid) { int c_in, c_out; #ifdef USE_PIPES int pin[2], pout[2]; if ((pipe(pin) == -1) || (pipe(pout) == -1)) fatal("pipe: %s", strerror(errno)); *in = pin[0]; *out = pout[1]; c_in = pout[0]; c_out = pin[1]; #else /* USE_PIPES */ int inout[2]; if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1) fatal("socketpair: %s", strerror(errno)); *in = *out = inout[0]; c_in = c_out = inout[1]; #endif /* USE_PIPES */ if ((*sshpid = fork()) == -1) fatal("fork: %s", strerror(errno)); else if (*sshpid == 0) { if ((dup2(c_in, STDIN_FILENO) == -1) || (dup2(c_out, STDOUT_FILENO) == -1)) { fprintf(stderr, "dup2: %s\n", strerror(errno)); exit(1); } close(*in); close(*out); close(c_in); close(c_out); execv(ssh_program, args); fprintf(stderr, "exec: %s: %s\n", ssh_program, strerror(errno)); exit(1); } close(c_in); close(c_out); } static void usage(void) { fprintf(stderr, "usage: sftp [-1vC] [-b batchfile] [-osshopt=value] [user@]host[:file [file]]\n"); exit(1); } int main(int argc, char **argv) { int in, out, ch; pid_t sshpid; char *host, *userhost, *cp, *file2; int debug_level = 0, sshver = 2; char *file1 = NULL, *sftp_server = NULL; LogLevel ll = SYSLOG_LEVEL_INFO; arglist args; extern int optind; extern char *optarg; args.list = NULL; addargs(&args, "ssh"); /* overwritten with ssh_program */ addargs(&args, "-oFallBackToRsh no"); addargs(&args, "-oForwardX11 no"); addargs(&args, "-oForwardAgent no"); ll = SYSLOG_LEVEL_INFO; infile = stdin; /* Read from STDIN unless changed by -b */ while ((ch = getopt(argc, argv, "1hvCo:s:S:b:")) != -1) { switch (ch) { case 'C': addargs(&args, "-C"); break; case 'v': if (debug_level < 3) { addargs(&args, "-v"); ll = SYSLOG_LEVEL_DEBUG1 + debug_level; } debug_level++; break; case 'o': addargs(&args, "-o%s", optarg); break; case '1': sshver = 1; if (sftp_server == NULL) sftp_server = _PATH_SFTP_SERVER; break; case 's': sftp_server = optarg; break; case 'S': ssh_program = optarg; break; case 'b': if (infile == stdin) { infile = fopen(optarg, "r"); if (infile == NULL) fatal("%s (%s).", strerror(errno), optarg); } else fatal("Filename already specified."); break; case 'h': default: usage(); } } if (optind == argc || argc > (optind + 2)) usage(); userhost = xstrdup(argv[optind]); file2 = argv[optind+1]; if ((cp = colon(userhost)) != NULL) { *cp++ = '\0'; file1 = cp; } if ((host = strchr(userhost, '@')) == NULL) host = userhost; else { *host++ = '\0'; if (!userhost[0]) { fprintf(stderr, "Missing username\n"); usage(); } addargs(&args, "-l%s",userhost); } host = cleanhostname(host); if (!*host) { fprintf(stderr, "Missing hostname\n"); usage(); } log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1); addargs(&args, "-oProtocol %d", sshver); /* no subsystem if the server-spec contains a '/' */ if (sftp_server == NULL || strchr(sftp_server, '/') == NULL) addargs(&args, "-s"); addargs(&args, "%s", host); addargs(&args, "%s", (sftp_server != NULL ? sftp_server : "sftp")); args.list[0] = ssh_program; fprintf(stderr, "Connecting to %s...\n", host); connect_to_server(args.list, &in, &out, &sshpid); interactive_loop(in, out, file1, file2); close(in); close(out); if (infile != stdin) fclose(infile); if (waitpid(sshpid, NULL, 0) == -1) fatal("Couldn't wait for ssh process: %s", strerror(errno)); exit(0); }