#include <stdlib.h>
#include <stdarg.h>
#include <assert.h>
+#include <limits.h>
#define PUTTY_DO_GLOBALS
#include "putty.h"
#include "sftp.h"
#include "int64.h"
+/*
+ * Since SFTP is a request-response oriented protocol, it requires
+ * no buffer management: when we send data, we stop and wait for an
+ * acknowledgement _anyway_, and so we can't possibly overfill our
+ * send buffer.
+ */
+
/* ----------------------------------------------------------------------
* String handling routines.
*/
}
/*
- * Get a file and save it at the local end.
+ * Get a file and save it at the local end. We have two very
+ * similar commands here: `get' and `reget', which differ in that
+ * `reget' checks for the existence of the destination file and
+ * starts from where a previous aborted transfer left off.
*/
-int sftp_cmd_get(struct sftp_command *cmd)
+int sftp_general_get(struct sftp_command *cmd, int restart)
{
struct fxp_handle *fh;
char *fname, *outfname;
sfree(fname);
return 0;
}
- fp = fopen(outfname, "wb");
+
+ if (restart) {
+ fp = fopen(outfname, "rb+");
+ } else {
+ fp = fopen(outfname, "wb");
+ }
+
if (!fp) {
printf("local: unable to open %s\n", outfname);
fxp_close(fh);
return 0;
}
- printf("remote:%s => local:%s\n", fname, outfname);
+ if (restart) {
+ long posn;
+ fseek(fp, 0L, SEEK_END);
+ posn = ftell(fp);
+ printf("reget: restarting at file position %ld\n", posn);
+ offset = uint64_make(0, posn);
+ } else {
+ offset = uint64_make(0, 0);
+ }
- offset = uint64_make(0, 0);
+ printf("remote:%s => local:%s\n", fname, outfname);
/*
* FIXME: we can use FXP_FSTAT here to get the file size, and
return 0;
}
+int sftp_cmd_get(struct sftp_command *cmd)
+{
+ return sftp_general_get(cmd, 0);
+}
+int sftp_cmd_reget(struct sftp_command *cmd)
+{
+ return sftp_general_get(cmd, 1);
+}
/*
- * Send a file and store it at the remote end.
+ * Send a file and store it at the remote end. We have two very
+ * similar commands here: `put' and `reput', which differ in that
+ * `reput' checks for the existence of the destination file and
+ * starts from where a previous aborted transfer left off.
*/
-int sftp_cmd_put(struct sftp_command *cmd)
+int sftp_general_put(struct sftp_command *cmd, int restart)
{
struct fxp_handle *fh;
char *fname, *origoutfname, *outfname;
sfree(outfname);
return 0;
}
- fh = fxp_open(outfname, SSH_FXF_WRITE | SSH_FXF_CREAT | SSH_FXF_TRUNC);
+ if (restart) {
+ fh = fxp_open(outfname,
+ SSH_FXF_WRITE);
+ } else {
+ fh = fxp_open(outfname,
+ SSH_FXF_WRITE | SSH_FXF_CREAT | SSH_FXF_TRUNC);
+ }
if (!fh) {
printf("%s: %s\n", outfname, fxp_error());
sfree(outfname);
return 0;
}
- printf("local:%s => remote:%s\n", fname, outfname);
+ if (restart) {
+ char decbuf[30];
+ struct fxp_attrs attrs;
+ if (!fxp_fstat(fh, &attrs)) {
+ printf("read size of %s: %s\n", outfname, fxp_error());
+ sfree(outfname);
+ return 0;
+ }
+ if (!(attrs.flags & SSH_FILEXFER_ATTR_SIZE)) {
+ printf("read size of %s: size was not given\n", outfname);
+ sfree(outfname);
+ return 0;
+ }
+ offset = attrs.size;
+ uint64_decimal(offset, decbuf);
+ printf("reput: restarting at file position %s\n", decbuf);
+ if (uint64_compare(offset, uint64_make(0, LONG_MAX)) > 0) {
+ printf("reput: remote file is larger than we can deal with\n");
+ sfree(outfname);
+ return 0;
+ }
+ if (fseek(fp, offset.lo, SEEK_SET) != 0)
+ fseek(fp, 0, SEEK_END); /* *shrug* */
+ } else {
+ offset = uint64_make(0, 0);
+ }
- offset = uint64_make(0, 0);
+ printf("local:%s => remote:%s\n", fname, outfname);
/*
* FIXME: we can use FXP_FSTAT here to get the file size, and
return 0;
}
+int sftp_cmd_put(struct sftp_command *cmd)
+{
+ return sftp_general_put(cmd, 0);
+}
+int sftp_cmd_reput(struct sftp_command *cmd)
+{
+ return sftp_general_put(cmd, 1);
+}
+
+int sftp_cmd_mkdir(struct sftp_command *cmd)
+{
+ char *dir;
+ int result;
+
+
+ if (cmd->nwords < 2) {
+ printf("mkdir: expects a directory\n");
+ return 0;
+ }
+
+ dir = canonify(cmd->words[1]);
+ if (!dir) {
+ printf("%s: %s\n", dir, fxp_error());
+ return 0;
+ }
+
+ result = fxp_mkdir(dir);
+ if (!result) {
+ printf("mkdir %s: %s\n", dir, fxp_error());
+ sfree(dir);
+ return 0;
+ }
+
+ sfree(dir);
+ return 0;
+}
+
+int sftp_cmd_rmdir(struct sftp_command *cmd)
+{
+ char *dir;
+ int result;
+
+
+ if (cmd->nwords < 2) {
+ printf("rmdir: expects a directory\n");
+ return 0;
+ }
+
+ dir = canonify(cmd->words[1]);
+ if (!dir) {
+ printf("%s: %s\n", dir, fxp_error());
+ return 0;
+ }
+
+ result = fxp_rmdir(dir);
+ if (!result) {
+ printf("rmdir %s: %s\n", dir, fxp_error());
+ sfree(dir);
+ return 0;
+ }
+
+ sfree(dir);
+ return 0;
+}
+
+int sftp_cmd_rm(struct sftp_command *cmd)
+{
+ char *fname;
+ int result;
+
+ if (cmd->nwords < 2) {
+ printf("rm: expects a filename\n");
+ return 0;
+ }
+
+ fname = canonify(cmd->words[1]);
+ if (!fname) {
+ printf("%s: %s\n", fname, fxp_error());
+ return 0;
+ }
+
+ result = fxp_remove(fname);
+ if (!result) {
+ printf("rm %s: %s\n", fname, fxp_error());
+ sfree(fname);
+ return 0;
+ }
+
+ sfree(fname);
+ return 0;
+
+}
+
+int sftp_cmd_mv(struct sftp_command *cmd)
+{
+ char *srcfname, *dstfname;
+ int result;
+
+ if (cmd->nwords < 3) {
+ printf("mv: expects two filenames\n");
+ return 0;
+ }
+ srcfname = canonify(cmd->words[1]);
+ if (!srcfname) {
+ printf("%s: %s\n", srcfname, fxp_error());
+ return 0;
+ }
+
+ dstfname = canonify(cmd->words[2]);
+ if (!dstfname) {
+ printf("%s: %s\n", dstfname, fxp_error());
+ return 0;
+ }
+
+ result = fxp_rename(srcfname, dstfname);
+ if (!result) {
+ char const *error = fxp_error();
+ struct fxp_attrs attrs;
+
+ /*
+ * The move might have failed because dstfname pointed at a
+ * directory. We check this possibility now: if dstfname
+ * _is_ a directory, we re-attempt the move by appending
+ * the basename of srcfname to dstfname.
+ */
+ result = fxp_stat(dstfname, &attrs);
+ if (result &&
+ (attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) &&
+ (attrs.permissions & 0040000)) {
+ char *p;
+ char *newname, *newcanon;
+ printf("(destination %s is a directory)\n", dstfname);
+ p = srcfname + strlen(srcfname);
+ while (p > srcfname && p[-1] != '/') p--;
+ newname = dupcat(dstfname, "/", p, NULL);
+ newcanon = canonify(newname);
+ sfree(newname);
+ if (newcanon) {
+ sfree(dstfname);
+ dstfname = newcanon;
+ result = fxp_rename(srcfname, dstfname);
+ error = result ? NULL : fxp_error();
+ }
+ }
+ if (error) {
+ printf("mv %s %s: %s\n", srcfname, dstfname, error);
+ sfree(srcfname);
+ sfree(dstfname);
+ return 0;
+ }
+ }
+ printf("%s -> %s\n", srcfname, dstfname);
+
+ sfree(srcfname);
+ sfree(dstfname);
+ return 0;
+}
+
+int sftp_cmd_chmod(struct sftp_command *cmd)
+{
+ char *fname, *mode;
+ int result;
+ struct fxp_attrs attrs;
+ unsigned attrs_clr, attrs_xor, oldperms, newperms;
+
+ if (cmd->nwords < 3) {
+ printf("chmod: expects a mode specifier and a filename\n");
+ return 0;
+ }
+
+ /*
+ * Attempt to parse the mode specifier in cmd->words[1]. We
+ * don't support the full horror of Unix chmod; instead we
+ * support a much simpler syntax in which the user can either
+ * specify an octal number, or a comma-separated sequence of
+ * [ugoa]*[-+=][rwxst]+. (The initial [ugoa] sequence may
+ * _only_ be omitted if the only attribute mentioned is t,
+ * since all others require a user/group/other specification.
+ * Additionally, the s attribute may not be specified for any
+ * [ugoa] specifications other than exactly u or exactly g.
+ */
+ attrs_clr = attrs_xor = 0;
+ mode = cmd->words[1];
+ if (mode[0] >= '0' && mode[0] <= '9') {
+ if (mode[strspn(mode, "01234567")]) {
+ printf("chmod: numeric file modes should"
+ " contain digits 0-7 only\n");
+ return 0;
+ }
+ attrs_clr = 07777;
+ sscanf(mode, "%o", &attrs_xor);
+ attrs_xor &= attrs_clr;
+ } else {
+ while (*mode) {
+ char *modebegin = mode;
+ unsigned subset, perms;
+ int action;
+
+ subset = 0;
+ while (*mode && *mode != ',' &&
+ *mode != '+' && *mode != '-' && *mode != '=') {
+ switch (*mode) {
+ case 'u': subset |= 04700; break; /* setuid, user perms */
+ case 'g': subset |= 02070; break; /* setgid, group perms */
+ case 'o': subset |= 00007; break; /* just other perms */
+ case 'a': subset |= 06777; break; /* all of the above */
+ default:
+ printf("chmod: file mode '%.*s' contains unrecognised"
+ " user/group/other specifier '%c'\n",
+ strcspn(modebegin, ","), modebegin, *mode);
+ return 0;
+ }
+ mode++;
+ }
+ if (!*mode || *mode == ',') {
+ printf("chmod: file mode '%.*s' is incomplete\n",
+ strcspn(modebegin, ","), modebegin);
+ return 0;
+ }
+ action = *mode++;
+ if (!*mode || *mode == ',') {
+ printf("chmod: file mode '%.*s' is incomplete\n",
+ strcspn(modebegin, ","), modebegin);
+ return 0;
+ }
+ perms = 0;
+ while (*mode && *mode != ',') {
+ switch (*mode) {
+ case 'r': perms |= 00444; break;
+ case 'w': perms |= 00222; break;
+ case 'x': perms |= 00111; break;
+ case 't': perms |= 01000; subset |= 01000; break;
+ case 's':
+ if ((subset & 06777) != 04700 &&
+ (subset & 06777) != 02070) {
+ printf("chmod: file mode '%.*s': set[ug]id bit should"
+ " be used with exactly one of u or g only\n",
+ strcspn(modebegin, ","), modebegin);
+ return 0;
+ }
+ perms |= 06000;
+ break;
+ default:
+ printf("chmod: file mode '%.*s' contains unrecognised"
+ " permission specifier '%c'\n",
+ strcspn(modebegin, ","), modebegin, *mode);
+ return 0;
+ }
+ mode++;
+ }
+ if (!(subset & 06777) && (perms &~ subset)) {
+ printf("chmod: file mode '%.*s' contains no user/group/other"
+ " specifier and permissions other than 't' \n",
+ strcspn(modebegin, ","), modebegin, *mode);
+ return 0;
+ }
+ perms &= subset;
+ switch (action) {
+ case '+':
+ attrs_clr |= perms;
+ attrs_xor |= perms;
+ break;
+ case '-':
+ attrs_clr |= perms;
+ attrs_xor &= ~perms;
+ break;
+ case '=':
+ attrs_clr |= subset;
+ attrs_xor |= perms;
+ break;
+ }
+ if (*mode) mode++; /* eat comma */
+ }
+ }
+
+ fname = canonify(cmd->words[2]);
+ if (!fname) {
+ printf("%s: %s\n", fname, fxp_error());
+ return 0;
+ }
+
+ result = fxp_stat(fname, &attrs);
+ if (!result || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) {
+ printf("get attrs for %s: %s\n", fname,
+ result ? "file permissions not provided" : fxp_error());
+ sfree(fname);
+ return 0;
+ }
+
+ attrs.flags = SSH_FILEXFER_ATTR_PERMISSIONS; /* perms _only_ */
+ oldperms = attrs.permissions & 07777;
+ attrs.permissions &= ~attrs_clr;
+ attrs.permissions ^= attrs_xor;
+ newperms = attrs.permissions & 07777;
+
+ result = fxp_setstat(fname, attrs);
+
+ if (!result) {
+ printf("set attrs for %s: %s\n", fname, fxp_error());
+ sfree(fname);
+ return 0;
+ }
+
+ printf("%s: %04o -> %04o\n", fname, oldperms, newperms);
+
+ sfree(fname);
+ return 0;
+}
static struct sftp_cmd_lookup {
char *name;
{
"bye", sftp_cmd_quit}, {
"cd", sftp_cmd_cd}, {
+ "chmod", sftp_cmd_chmod}, {
+ "del", sftp_cmd_rm}, {
+ "delete", sftp_cmd_rm}, {
"dir", sftp_cmd_ls}, {
"exit", sftp_cmd_quit}, {
"get", sftp_cmd_get}, {
"ls", sftp_cmd_ls}, {
+ "mkdir", sftp_cmd_mkdir}, {
+ "mv", sftp_cmd_mv}, {
"put", sftp_cmd_put}, {
-"quit", sftp_cmd_quit},};
+ "quit", sftp_cmd_quit}, {
+ "reget", sftp_cmd_reget}, {
+ "ren", sftp_cmd_mv}, {
+ "rename", sftp_cmd_mv}, {
+ "reput", sftp_cmd_reput}, {
+ "rm", sftp_cmd_rm}, {
+ "rmdir", sftp_cmd_rmdir},};
/* ----------------------------------------------------------------------
* Command line reading and parsing.
*/
-struct sftp_command *sftp_getcmd(void)
+struct sftp_command *sftp_getcmd(FILE *fp, int mode, int modeflags)
{
char *line;
int linelen, linesize;
char *p, *q, *r;
int quoting;
- printf("psftp> ");
+ if ((mode == 0) || (modeflags & 1)) {
+ printf("psftp> ");
+ }
fflush(stdout);
cmd = smalloc(sizeof(struct sftp_command));
linesize += 512;
line = srealloc(line, linesize);
- ret = fgets(line + linelen, linesize - linelen, stdin);
+ ret = fgets(line + linelen, linesize - linelen, fp);
+ if (modeflags & 1) {
+ printf("%s", ret);
+ }
if (!ret || (linelen == 0 && line[0] == '\0')) {
cmd->obey = sftp_cmd_quit;
return cmd;
}
-void do_sftp(void)
+void do_sftp(int mode, int modeflags, char *batchfile)
{
+ FILE *fp;
+
/*
* Do protocol initialisation.
*/
}
pwd = dupstr(homedir);
- /* ------------------------------------------------------------------
- * Now we're ready to do Real Stuff.
+ /*
+ * Batch mode?
*/
- while (1) {
- struct sftp_command *cmd;
- cmd = sftp_getcmd();
- if (!cmd)
- break;
- if (cmd->obey(cmd) < 0)
- break;
+ if (mode == 0) {
+
+ /* ------------------------------------------------------------------
+ * Now we're ready to do Real Stuff.
+ */
+ while (1) {
+ struct sftp_command *cmd;
+ cmd = sftp_getcmd(stdin, 0, 0);
+ if (!cmd)
+ break;
+ if (cmd->obey(cmd) < 0)
+ break;
+ }
+ } else {
+ fp = fopen(batchfile, "r");
+ if (!fp) {
+ printf("Fatal: unable to open %s\n", batchfile);
+ return;
+ }
+ while (1) {
+ struct sftp_command *cmd;
+ cmd = sftp_getcmd(fp, mode, modeflags);
+ if (!cmd)
+ break;
+ if (cmd->obey(cmd) < 0)
+ break;
+ if (fxp_error() != NULL) {
+ if (!(modeflags & 2))
+ break;
+ }
+ }
+ fclose(fp);
+
}
}
char *keystr, char *fingerprint)
{
int ret;
+ HANDLE hin;
+ DWORD savemode, i;
static const char absentmsg[] =
"The server's host key is not cached in the registry. You\n"
"%s\n"
"If you trust this host, enter \"y\" to add the key to\n"
"PuTTY's cache and carry on connecting.\n"
- "If you do not trust this host, enter \"n\" to abandon the\n"
- "connection.\n" "Continue connecting? (y/n) ";
+ "If you want to carry on connecting just once, without\n"
+ "adding the key to the cache, enter \"n\".\n"
+ "If you do not trust this host, press Return to abandon the\n"
+ "connection.\n"
+ "Store key in cache? (y/n) ";
static const char wrongmsg[] =
"WARNING - POTENTIAL SECURITY BREACH!\n"
"The new key fingerprint is:\n"
"%s\n"
"If you were expecting this change and trust the new key,\n"
- "enter Yes to update PuTTY's cache and continue connecting.\n"
+ "enter \"y\" to update PuTTY's cache and continue connecting.\n"
"If you want to carry on connecting but without updating\n"
- "the cache, enter No.\n"
+ "the cache, enter \"n\".\n"
"If you want to abandon the connection completely, press\n"
"Return to cancel. Pressing Return is the ONLY guaranteed\n"
"safe choice.\n"
if (ret == 0) /* success - key matched OK */
return;
+
if (ret == 2) { /* key was different */
fprintf(stderr, wrongmsg, fingerprint);
- if (fgets(line, sizeof(line), stdin) &&
- line[0] != '\0' && line[0] != '\n') {
- if (line[0] == 'y' || line[0] == 'Y')
- store_host_key(host, port, keytype, keystr);
- } else {
- fprintf(stderr, abandoned);
- exit(0);
- }
+ fflush(stderr);
}
if (ret == 1) { /* key was absent */
fprintf(stderr, absentmsg, fingerprint);
- if (fgets(line, sizeof(line), stdin) &&
- (line[0] == 'y' || line[0] == 'Y'))
+ fflush(stderr);
+ }
+
+ hin = GetStdHandle(STD_INPUT_HANDLE);
+ GetConsoleMode(hin, &savemode);
+ SetConsoleMode(hin, (savemode | ENABLE_ECHO_INPUT |
+ ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT));
+ ReadFile(hin, line, sizeof(line) - 1, &i, NULL);
+ SetConsoleMode(hin, savemode);
+
+ if (line[0] != '\0' && line[0] != '\r' && line[0] != '\n') {
+ if (line[0] == 'y' || line[0] == 'Y')
store_host_key(host, port, keytype, keystr);
- else {
- fprintf(stderr, abandoned);
- exit(0);
- }
+ } else {
+ fprintf(stderr, abandoned);
+ exit(0);
+ }
+}
+
+/*
+ * Ask whether the selected cipher is acceptable (since it was
+ * below the configured 'warn' threshold).
+ * cs: 0 = both ways, 1 = client->server, 2 = server->client
+ */
+void askcipher(char *ciphername, int cs)
+{
+ HANDLE hin;
+ DWORD savemode, i;
+
+ static const char msg[] =
+ "The first %scipher supported by the server is\n"
+ "%s, which is below the configured warning threshold.\n"
+ "Continue with connection? (y/n) ";
+ static const char abandoned[] = "Connection abandoned.\n";
+
+ char line[32];
+
+ fprintf(stderr, msg,
+ (cs == 0) ? "" :
+ (cs == 1) ? "client-to-server " :
+ "server-to-client ",
+ ciphername);
+ fflush(stderr);
+
+ hin = GetStdHandle(STD_INPUT_HANDLE);
+ GetConsoleMode(hin, &savemode);
+ SetConsoleMode(hin, (savemode | ENABLE_ECHO_INPUT |
+ ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT));
+ ReadFile(hin, line, sizeof(line) - 1, &i, NULL);
+ SetConsoleMode(hin, savemode);
+
+ if (line[0] == 'y' || line[0] == 'Y') {
+ return;
+ } else {
+ fprintf(stderr, abandoned);
+ exit(0);
}
}
static unsigned outlen; /* how much data required */
static unsigned char *pending = NULL; /* any spare data */
static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */
-void from_backend(int is_stderr, char *data, int datalen)
+int from_backend(int is_stderr, char *data, int datalen)
{
unsigned char *p = (unsigned char *) data;
unsigned len = (unsigned) datalen;
*/
if (is_stderr) {
fwrite(data, 1, len, stderr);
- return;
+ return 0;
}
/*
* If this is before the real session begins, just return.
*/
if (!outptr)
- return;
+ return 0;
if (outlen > 0) {
unsigned used = outlen;
memcpy(pending + pendlen, p, len);
pendlen += len;
}
+
+ return 0;
}
int sftp_recvdata(char *buf, int len)
{
printf("%s\n", ver);
printf("Usage: psftp [options] user@host\n");
printf("Options:\n");
+ printf(" -b file use specified batchfile\n");
+ printf(" -bc output batchfile commands\n");
+ printf(" -be don't stop batchfile processing if errors\n");
printf(" -v show verbose messages\n");
printf(" -P port connect to specified port\n");
printf(" -pw passw login with specified password\n");
int portnumber = 0;
char *user, *host, *userhost, *realhost;
char *err;
+ int mode = 0;
+ int modeflags = 0;
+ char *batchfile = NULL;
flags = FLAG_STDERR;
ssh_get_line = &get_line;
portnumber = atoi(argv[++i]);
} else if (strcmp(argv[i], "-pw") == 0 && i + 1 < argc) {
password = argv[++i];
+ } else if (strcmp(argv[i], "-b") == 0 && i + 1 < argc) {
+ mode = 1;
+ batchfile = argv[++i];
+ } else if (strcmp(argv[i], "-bc") == 0 && i + 1 < argc) {
+ modeflags = modeflags | 1;
+ } else if (strcmp(argv[i], "-be") == 0 && i + 1 < argc) {
+ modeflags = modeflags | 2;
} else if (strcmp(argv[i], "--") == 0) {
i++;
break;
if (verbose && realhost != NULL)
printf("Connected to %s\n", realhost);
- do_sftp();
+ do_sftp(mode, modeflags, batchfile);
if (back != NULL && back->socket() != NULL) {
char ch;
projects / u / mdw / putty / blobdiff