X-Git-Url: http://andersk.mit.edu/gitweb/openssh.git/blobdiff_plain/2b87da3b1fb7c5ca907cb65aa048fada4ad29803..eacb954ed9ad43fc7fd4711811d8286e67bdc253:/sftp.c?ds=sidebyside

diff --git a/sftp.c b/sftp.c
index be4954b1..4354bfd4 100644
--- a/sftp.c
+++ b/sftp.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001 Damien Miller.  All rights reserved.
+ * Copyright (c) 2001,2002 Damien Miller.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -24,28 +24,49 @@
 
 #include "includes.h"
 
-RCSID("$OpenBSD: sftp.c,v 1.1 2001/02/04 11:11:54 djm Exp $");
-
-/* XXX: commandline mode */
-/* XXX: copy between two remote hosts (commandline) */
-/* XXX: short-form remote directory listings (like 'ls -C') */
+RCSID("$OpenBSD: sftp.c,v 1.37 2003/07/10 20:05:55 markus Exp $");
 
 #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"
 
-void
-connect_to_server(char **args, int *in, int *out, pid_t *sshpid)
+#ifdef HAVE___PROGNAME
+extern char *__progname;
+#else
+char *__progname;
+#endif
+
+FILE* infile;
+size_t copy_buffer_len = 32768;
+size_t num_requests = 16;
+static pid_t sshpid = -1;
+
+extern int showprogress;
+
+static void
+killchild(int signo)
+{
+	if (sshpid > 1)
+		kill(sshpid, signo);
+
+	_exit(1);
+}
+
+static void
+connect_to_server(char *path, char **args, int *in, int *out)
 {
 	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];
@@ -54,15 +75,16 @@ connect_to_server(char **args, int *in, int *out, pid_t *sshpid)
 	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)
+	if ((sshpid = fork()) == -1)
 		fatal("fork: %s", strerror(errno));
-	else if (*sshpid == 0) {
+	else if (sshpid == 0) {
 		if ((dup2(c_in, STDIN_FILENO) == -1) ||
 		    (dup2(c_out, STDOUT_FILENO) == -1)) {
 			fprintf(stderr, "dup2: %s\n", strerror(errno));
@@ -72,151 +94,177 @@ connect_to_server(char **args, int *in, int *out, pid_t *sshpid)
 		close(*out);
 		close(c_in);
 		close(c_out);
-		execv(_PATH_SSH_PROGRAM, args);
-		fprintf(stderr, "exec: %s", strerror(errno));
+		execv(path, args);
+		fprintf(stderr, "exec: %s: %s\n", path, strerror(errno));
 		exit(1);
 	}
 
+	signal(SIGTERM, killchild);
+	signal(SIGINT, killchild);
+	signal(SIGHUP, killchild);
 	close(c_in);
 	close(c_out);
 }
 
-char **
-make_ssh_args(char *add_arg)
-{
-	static char **args = NULL;
-	static int nargs = 0;
-	char debug_buf[4096];
-	int i;
-
-	/* Init args array */
-	if (args == NULL) {
-		nargs = 4;
-		i = 0;
-		args = xmalloc(sizeof(*args) * nargs);
-		args[i++] = "ssh";
-		args[i++] = "-oProtocol=2";
-		args[i++] = "-s";
-		args[i++] = NULL;
-	}
-
-	/* If asked to add args, then do so and return */
-	if (add_arg) {
-		i = nargs++ - 1;
-		args = xrealloc(args, sizeof(*args) * nargs);
-		args[i++] = add_arg;
-		args[i++] = NULL;
-		return(NULL);
-	}
-
-	/* Otherwise finish up and return the arg array */
-	make_ssh_args("sftp");
-
-	/* XXX: overflow - doesn't grow debug_buf */
-	debug_buf[0] = '\0';
-	for(i = 0; args[i]; i++) {
-		if (i)
-			strlcat(debug_buf, " ", sizeof(debug_buf));
-
-		strlcat(debug_buf, args[i], sizeof(debug_buf));
-	}
-	debug("SSH args \"%s\"", debug_buf);
-
-	return(args);
-}
-
-void
+static void
 usage(void)
 {
-	fprintf(stderr, "usage: sftp [-vC] [-osshopt=value] [user@]host\n");
+	extern char *__progname;
+
+	fprintf(stderr,
+	    "usage: %s [-vC1] [-b batchfile] [-o ssh_option] [-s subsystem | sftp_server]\n"
+	    "            [-B buffer_size] [-F ssh_config] [-P sftp_server path]\n"
+	    "            [-R num_requests] [-S program]\n"
+	    "            [user@]host[:file [file]]\n", __progname);
 	exit(1);
 }
 
 int
 main(int argc, char **argv)
 {
-	int in, out, i, debug_level, compress_flag;
-	pid_t sshpid;
-	char *cp;
-	LogLevel ll;
-
-	debug_level = compress_flag = 0;
-	for(i = 1; i < argc && argv[i][0] == '-'; i++) {
-		if (!strcmp(argv[i], "-v"))
-			debug_level = MIN(3, debug_level + 1);
-		else if (!strcmp(argv[i], "-C"))
-			compress_flag = 1;
-		else if (!strncmp(argv[i], "-o", 2)) {
-			make_ssh_args(argv[i]);
-		} else {
-			fprintf(stderr, "Unknown option \"%s\"\n", argv[i]);
+	int in, out, ch, err;
+	char *host, *userhost, *cp, *file2;
+	int debug_level = 0, sshver = 2;
+	char *file1 = NULL, *sftp_server = NULL;
+	char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL;
+	LogLevel ll = SYSLOG_LEVEL_INFO;
+	arglist args;
+	extern int optind;
+	extern char *optarg;
+
+	__progname = get_progname(argv[0]);
+	args.list = NULL;
+	addargs(&args, "ssh");		/* overwritten with ssh_program */
+	addargs(&args, "-oForwardX11 no");
+	addargs(&args, "-oForwardAgent no");
+	addargs(&args, "-oClearAllForwardings yes");
+	ll = SYSLOG_LEVEL_INFO;
+	infile = stdin;		/* Read from STDIN unless changed by -b */
+
+	while ((ch = getopt(argc, argv, "1hvCo:s:S:b:B:F:P:R:")) != -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 'F':
+		case 'o':
+			addargs(&args, "-%c%s", ch, 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.");
+			showprogress = 0;
+			break;
+		case 'P':
+			sftp_direct = optarg;
+			break;
+		case 'B':
+			copy_buffer_len = strtol(optarg, &cp, 10);
+			if (copy_buffer_len == 0 || *cp != '\0')
+				fatal("Invalid buffer size \"%s\"", optarg);
+			break;
+		case 'R':
+			num_requests = strtol(optarg, &cp, 10);
+			if (num_requests == 0 || *cp != '\0')
+				fatal("Invalid number of requests \"%s\"",
+				    optarg);
+			break;
+		case 'h':
+		default:
 			usage();
 		}
 	}
 
-	if (i == argc || argc > (i + 1))
-		usage();
+	log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
 
-	if ((cp = strchr(argv[i], '@')) == NULL)
-		cp = argv[i];
-	else {
-		*cp = '\0';
-		if (!argv[i][0]) {
-			fprintf(stderr, "Missing username\n");
+	if (sftp_direct == NULL) {
+		if (optind == argc || argc > (optind + 2))
 			usage();
+
+		userhost = xstrdup(argv[optind]);
+		file2 = argv[optind+1];
+
+		if ((cp = colon(userhost)) != NULL) {
+			*cp++ = '\0';
+			file1 = cp;
 		}
-		make_ssh_args("-l");
-		make_ssh_args(argv[i]);
-		cp++;
-	}
 
-	if (!*cp) {
-		fprintf(stderr, "Missing hostname\n");
-		usage();
-	}
+		if ((host = strrchr(userhost, '@')) == NULL)
+			host = userhost;
+		else {
+			*host++ = '\0';
+			if (!userhost[0]) {
+				fprintf(stderr, "Missing username\n");
+				usage();
+			}
+			addargs(&args, "-l%s",userhost);
+		}
 
-	/* Set up logging and debug '-d' arguments to ssh */
-	ll = SYSLOG_LEVEL_INFO;
-	switch (debug_level) {
-	case 1:
-		ll = SYSLOG_LEVEL_DEBUG1;
-		make_ssh_args("-v");
-		break;
-	case 2:
-		ll = SYSLOG_LEVEL_DEBUG2;
-		make_ssh_args("-v");
-		make_ssh_args("-v");
-		break;
-	case 3:
-		ll = SYSLOG_LEVEL_DEBUG3;
-		make_ssh_args("-v");
-		make_ssh_args("-v");
-		make_ssh_args("-v");
-		break;
-	}
+		host = cleanhostname(host);
+		if (!*host) {
+			fprintf(stderr, "Missing hostname\n");
+			usage();
+		}
 
-	if (compress_flag)
-		make_ssh_args("-C");
+		addargs(&args, "-oProtocol %d", sshver);
 
-	log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
+		/* no subsystem if the server-spec contains a '/' */
+		if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
+			addargs(&args, "-s");
 
-	make_ssh_args(cp);
+		addargs(&args, "%s", host);
+		addargs(&args, "%s", (sftp_server != NULL ?
+		    sftp_server : "sftp"));
+		args.list[0] = ssh_program;
 
-	fprintf(stderr, "Connecting to %s...\n", cp);
+		fprintf(stderr, "Connecting to %s...\n", host);
+		connect_to_server(ssh_program, args.list, &in, &out);
+	} else {
+		args.list = NULL;
+		addargs(&args, "sftp-server");
 
-	connect_to_server(make_ssh_args(NULL), &in, &out, &sshpid);
+		fprintf(stderr, "Attaching to %s...\n", sftp_direct);
+		connect_to_server(sftp_direct, args.list, &in, &out);
+	}
 
-	do_init(in, out);
+	err = interactive_loop(in, out, file1, file2);
 
-	interactive_loop(in, out);
+#if !defined(USE_PIPES)
+	shutdown(in, SHUT_RDWR);
+	shutdown(out, SHUT_RDWR);
+#endif
 
 	close(in);
 	close(out);
+	if (infile != stdin)
+		fclose(infile);
 
-	if (kill(sshpid, SIGHUP) == -1)
-		fatal("Couldn't terminate ssh process: %s", strerror(errno));
-
-	/* XXX: wait? */
+	while (waitpid(sshpid, NULL, 0) == -1)
+		if (errno != EINTR)
+			fatal("Couldn't wait for ssh process: %s",
+			    strerror(errno));
 
-	exit(0);
+	exit(err == 0 ? 0 : 1);
 }