X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=scp.c;fp=scp.c;h=0000000000000000000000000000000000000000;hb=89f4cf6a0a6bde2885287cd9cc8f95d639fe99a0;hp=1c601e979363cc356abc75526c2c0585ba13d9e1;hpb=6ef62aacfc5108355532ce82dc8eae7b7dc70e39;p=PuTTY.git diff --git a/scp.c b/scp.c deleted file mode 100644 index 1c601e97..00000000 --- a/scp.c +++ /dev/null @@ -1,2266 +0,0 @@ -/* - * scp.c - Scp (Secure Copy) client for PuTTY. - * Joris van Rantwijk, Simon Tatham - * - * This is mainly based on ssh-1.2.26/scp.c by Timo Rinne & Tatu Ylonen. - * They, in turn, used stuff from BSD rcp. - * - * (SGT, 2001-09-10: Joris van Rantwijk assures me that although - * this file as originally submitted was inspired by, and - * _structurally_ based on, ssh-1.2.26's scp.c, there wasn't any - * actual code duplicated, so the above comment shouldn't give rise - * to licensing issues.) - */ - -#include -#include -#include -#include -#include -#include - -#define PUTTY_DO_GLOBALS -#include "putty.h" -#include "psftp.h" -#include "ssh.h" -#include "sftp.h" -#include "storage.h" - -static int list = 0; -static int verbose = 0; -static int recursive = 0; -static int preserve = 0; -static int targetshouldbedirectory = 0; -static int statistics = 1; -static int prev_stats_len = 0; -static int scp_unsafe_mode = 0; -static int errs = 0; -static int gui_mode = 0; -static int try_scp = 1; -static int try_sftp = 1; -static int main_cmd_is_sftp = 0; -static int fallback_cmd_is_sftp = 0; -static int using_sftp = 0; - -static Backend *back; -static void *backhandle; -static Config cfg; - -static void source(char *src); -static void rsource(char *src); -static void sink(char *targ, char *src); - -/* - * The maximum amount of queued data we accept before we stop and - * wait for the server to process some. - */ -#define MAX_SCP_BUFSIZE 16384 - -void ldisc_send(void *handle, char *buf, int len, int interactive) -{ - /* - * This is only here because of the calls to ldisc_send(NULL, - * 0) in ssh.c. Nothing in PSCP actually needs to use the ldisc - * as an ldisc. So if we get called with any real data, I want - * to know about it. - */ - assert(len == 0); -} - -static void tell_char(FILE * stream, char c) -{ - if (!gui_mode) - fputc(c, stream); - else - gui_send_char(stream == stderr, c); -} - -static void tell_str(FILE * stream, char *str) -{ - unsigned int i; - - for (i = 0; i < strlen(str); ++i) - tell_char(stream, str[i]); -} - -static void tell_user(FILE * stream, char *fmt, ...) -{ - char *str, *str2; - va_list ap; - va_start(ap, fmt); - str = dupvprintf(fmt, ap); - va_end(ap); - str2 = dupcat(str, "\n", NULL); - sfree(str); - tell_str(stream, str2); - sfree(str2); -} - -/* - * Print an error message and perform a fatal exit. - */ -void fatalbox(char *fmt, ...) -{ - char *str, *str2; - va_list ap; - va_start(ap, fmt); - str = dupvprintf(fmt, ap); - str2 = dupcat("Fatal: ", str, "\n", NULL); - sfree(str); - va_end(ap); - tell_str(stderr, str2); - sfree(str2); - errs++; - - if (gui_mode) - gui_send_errcount(list, errs); - - cleanup_exit(1); -} -void modalfatalbox(char *fmt, ...) -{ - char *str, *str2; - va_list ap; - va_start(ap, fmt); - str = dupvprintf(fmt, ap); - str2 = dupcat("Fatal: ", str, "\n", NULL); - sfree(str); - va_end(ap); - tell_str(stderr, str2); - sfree(str2); - errs++; - - if (gui_mode) - gui_send_errcount(list, errs); - - cleanup_exit(1); -} -void connection_fatal(void *frontend, char *fmt, ...) -{ - char *str, *str2; - va_list ap; - va_start(ap, fmt); - str = dupvprintf(fmt, ap); - str2 = dupcat("Fatal: ", str, "\n", NULL); - sfree(str); - va_end(ap); - tell_str(stderr, str2); - sfree(str2); - errs++; - - if (gui_mode) - gui_send_errcount(list, errs); - - cleanup_exit(1); -} - -/* - * In pscp, all agent requests should be synchronous, so this is a - * never-called stub. - */ -void agent_schedule_callback(void (*callback)(void *, void *, int), - void *callback_ctx, void *data, int len) -{ - assert(!"We shouldn't be here"); -} - -/* - * Receive a block of data from the SSH link. Block until all data - * is available. - * - * To do this, we repeatedly call the SSH protocol module, with our - * own trap in from_backend() to catch the data that comes back. We - * do this until we have enough data. - */ - -static unsigned char *outptr; /* where to put the data */ -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 */ -int from_backend(void *frontend, int is_stderr, const char *data, int datalen) -{ - unsigned char *p = (unsigned char *) data; - unsigned len = (unsigned) datalen; - - /* - * stderr data is just spouted to local stderr and otherwise - * ignored. - */ - if (is_stderr) { - if (len > 0) - fwrite(data, 1, len, stderr); - return 0; - } - - /* - * If this is before the real session begins, just return. - */ - if (!outptr) - return 0; - - if ((outlen > 0) && (len > 0)) { - unsigned used = outlen; - if (used > len) - used = len; - memcpy(outptr, p, used); - outptr += used; - outlen -= used; - p += used; - len -= used; - } - - if (len > 0) { - if (pendsize < pendlen + len) { - pendsize = pendlen + len + 4096; - pending = sresize(pending, pendsize, unsigned char); - if (!pending) - fatalbox("Out of memory"); - } - memcpy(pending + pendlen, p, len); - pendlen += len; - } - - return 0; -} -static int ssh_scp_recv(unsigned char *buf, int len) -{ - outptr = buf; - outlen = len; - - /* - * See if the pending-input block contains some of what we - * need. - */ - if (pendlen > 0) { - unsigned pendused = pendlen; - if (pendused > outlen) - pendused = outlen; - memcpy(outptr, pending, pendused); - memmove(pending, pending + pendused, pendlen - pendused); - outptr += pendused; - outlen -= pendused; - pendlen -= pendused; - if (pendlen == 0) { - pendsize = 0; - sfree(pending); - pending = NULL; - } - if (outlen == 0) - return len; - } - - while (outlen > 0) { - if (ssh_sftp_loop_iteration() < 0) - return 0; /* doom */ - } - - return len; -} - -/* - * Loop through the ssh connection and authentication process. - */ -static void ssh_scp_init(void) -{ - while (!back->sendok(backhandle)) { - if (ssh_sftp_loop_iteration() < 0) - return; /* doom */ - } - - /* Work out which backend we ended up using. */ - if (!ssh_fallback_cmd(backhandle)) - using_sftp = main_cmd_is_sftp; - else - using_sftp = fallback_cmd_is_sftp; - - if (verbose) { - if (using_sftp) - tell_user(stderr, "Using SFTP"); - else - tell_user(stderr, "Using SCP1"); - } -} - -/* - * Print an error message and exit after closing the SSH link. - */ -static void bump(char *fmt, ...) -{ - char *str, *str2; - va_list ap; - va_start(ap, fmt); - str = dupvprintf(fmt, ap); - va_end(ap); - str2 = dupcat(str, "\n", NULL); - sfree(str); - tell_str(stderr, str2); - sfree(str2); - errs++; - - if (back != NULL && back->socket(backhandle) != NULL) { - char ch; - back->special(backhandle, TS_EOF); - ssh_scp_recv((unsigned char *) &ch, 1); - } - - if (gui_mode) - gui_send_errcount(list, errs); - - cleanup_exit(1); -} - -/* - * Open an SSH connection to user@host and execute cmd. - */ -static void do_cmd(char *host, char *user, char *cmd) -{ - const char *err; - char *realhost; - void *logctx; - - if (host == NULL || host[0] == '\0') - bump("Empty host name"); - - /* - * If we haven't loaded session details already (e.g., from -load), - * try looking for a session called "host". - */ - if (!loaded_session) { - /* Try to load settings for `host' into a temporary config */ - Config cfg2; - cfg2.host[0] = '\0'; - do_defaults(host, &cfg2); - if (cfg2.host[0] != '\0') { - /* Settings present and include hostname */ - /* Re-load data into the real config. */ - do_defaults(host, &cfg); - } else { - /* Session doesn't exist or mention a hostname. */ - /* Use `host' as a bare hostname. */ - strncpy(cfg.host, host, sizeof(cfg.host) - 1); - cfg.host[sizeof(cfg.host) - 1] = '\0'; - } - } else { - /* Patch in hostname `host' to session details. */ - strncpy(cfg.host, host, sizeof(cfg.host) - 1); - cfg.host[sizeof(cfg.host) - 1] = '\0'; - } - - /* - * Force use of SSH. (If they got the protocol wrong we assume the - * port is useless too.) - */ - if (cfg.protocol != PROT_SSH) { - cfg.protocol = PROT_SSH; - cfg.port = 22; - } - - /* - * Enact command-line overrides. - */ - cmdline_run_saved(&cfg); - - /* - * Trim leading whitespace off the hostname if it's there. - */ - { - int space = strspn(cfg.host, " \t"); - memmove(cfg.host, cfg.host+space, 1+strlen(cfg.host)-space); - } - - /* See if host is of the form user@host */ - if (cfg.host[0] != '\0') { - char *atsign = strrchr(cfg.host, '@'); - /* Make sure we're not overflowing the user field */ - if (atsign) { - if (atsign - cfg.host < sizeof cfg.username) { - strncpy(cfg.username, cfg.host, atsign - cfg.host); - cfg.username[atsign - cfg.host] = '\0'; - } - memmove(cfg.host, atsign + 1, 1 + strlen(atsign + 1)); - } - } - - /* - * Trim a colon suffix off the hostname if it's there. - */ - cfg.host[strcspn(cfg.host, ":")] = '\0'; - - /* - * Remove any remaining whitespace from the hostname. - */ - { - int p1 = 0, p2 = 0; - while (cfg.host[p2] != '\0') { - if (cfg.host[p2] != ' ' && cfg.host[p2] != '\t') { - cfg.host[p1] = cfg.host[p2]; - p1++; - } - p2++; - } - cfg.host[p1] = '\0'; - } - - /* Set username */ - if (user != NULL && user[0] != '\0') { - strncpy(cfg.username, user, sizeof(cfg.username) - 1); - cfg.username[sizeof(cfg.username) - 1] = '\0'; - } else if (cfg.username[0] == '\0') { - user = get_username(); - if (!user) - bump("Empty user name"); - else { - if (verbose) - tell_user(stderr, "Guessing user name: %s", user); - strncpy(cfg.username, user, sizeof(cfg.username) - 1); - cfg.username[sizeof(cfg.username) - 1] = '\0'; - sfree(user); - } - } - - /* - * Disable scary things which shouldn't be enabled for simple - * things like SCP and SFTP: agent forwarding, port forwarding, - * X forwarding. - */ - cfg.x11_forward = 0; - cfg.agentfwd = 0; - cfg.portfwd[0] = cfg.portfwd[1] = '\0'; - - /* - * Set up main and possibly fallback command depending on - * options specified by user. - * Attempt to start the SFTP subsystem as a first choice, - * falling back to the provided scp command if that fails. - */ - cfg.remote_cmd_ptr2 = NULL; - if (try_sftp) { - /* First choice is SFTP subsystem. */ - main_cmd_is_sftp = 1; - strcpy(cfg.remote_cmd, "sftp"); - cfg.ssh_subsys = TRUE; - if (try_scp) { - /* Fallback is to use the provided scp command. */ - fallback_cmd_is_sftp = 0; - cfg.remote_cmd_ptr2 = cmd; - cfg.ssh_subsys2 = FALSE; - } else { - /* Since we're not going to try SCP, we may as well try - * harder to find an SFTP server, since in the current - * implementation we have a spare slot. */ - fallback_cmd_is_sftp = 1; - /* see psftp.c for full explanation of this kludge */ - cfg.remote_cmd_ptr2 = - "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n" - "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n" - "exec sftp-server"; - cfg.ssh_subsys2 = FALSE; - } - } else { - /* Don't try SFTP at all; just try the scp command. */ - main_cmd_is_sftp = 0; - cfg.remote_cmd_ptr = cmd; - cfg.ssh_subsys = FALSE; - } - cfg.nopty = TRUE; - - back = &ssh_backend; - - err = back->init(NULL, &backhandle, &cfg, cfg.host, cfg.port, &realhost, - 0, cfg.tcp_keepalives); - if (err != NULL) - bump("ssh_init: %s", err); - logctx = log_init(NULL, &cfg); - back->provide_logctx(backhandle, logctx); - console_provide_logctx(logctx); - ssh_scp_init(); - if (verbose && realhost != NULL) - tell_user(stderr, "Connected to %s\n", realhost); - sfree(realhost); -} - -/* - * Update statistic information about current file. - */ -static void print_stats(char *name, unsigned long size, unsigned long done, - time_t start, time_t now) -{ - float ratebs; - unsigned long eta; - char *etastr; - int pct; - int len; - int elap; - - elap = (unsigned long) difftime(now, start); - - if (now > start) - ratebs = (float) done / elap; - else - ratebs = (float) done; - - if (ratebs < 1.0) - eta = size - done; - else - eta = (unsigned long) ((size - done) / ratebs); - etastr = dupprintf("%02ld:%02ld:%02ld", - eta / 3600, (eta % 3600) / 60, eta % 60); - - pct = (int) (100 * (done * 1.0 / size)); - - if (gui_mode) { - gui_update_stats(name, size, pct, elap, done, eta, - (unsigned long) ratebs); - } else { - len = printf("\r%-25.25s | %10ld kB | %5.1f kB/s | ETA: %8s | %3d%%", - name, done / 1024, ratebs / 1024.0, etastr, pct); - if (len < prev_stats_len) - printf("%*s", prev_stats_len - len, ""); - prev_stats_len = len; - - if (done == size) - printf("\n"); - - fflush(stdout); - } - - free(etastr); -} - -/* - * Find a colon in str and return a pointer to the colon. - * This is used to separate hostname from filename. - */ -static char *colon(char *str) -{ - /* We ignore a leading colon, since the hostname cannot be - empty. We also ignore a colon as second character because - of filenames like f:myfile.txt. */ - if (str[0] == '\0' || str[0] == ':' || str[1] == ':') - return (NULL); - while (*str != '\0' && *str != ':' && *str != '/' && *str != '\\') - str++; - if (*str == ':') - return (str); - else - return (NULL); -} - -/* - * Return a pointer to the portion of str that comes after the last - * slash (or backslash or colon, if `local' is TRUE). - */ -static char *stripslashes(char *str, int local) -{ - char *p; - - if (local) { - p = strchr(str, ':'); - if (p) str = p+1; - } - - p = strrchr(str, '/'); - if (p) str = p+1; - - if (local) { - p = strrchr(str, '\\'); - if (p) str = p+1; - } - - return str; -} - -/* - * Determine whether a string is entirely composed of dots. - */ -static int is_dots(char *str) -{ - return str[strspn(str, ".")] == '\0'; -} - -/* - * Wait for a response from the other side. - * Return 0 if ok, -1 if error. - */ -static int response(void) -{ - char ch, resp, rbuf[2048]; - int p; - - if (ssh_scp_recv((unsigned char *) &resp, 1) <= 0) - bump("Lost connection"); - - p = 0; - switch (resp) { - case 0: /* ok */ - return (0); - default: - rbuf[p++] = resp; - /* fallthrough */ - case 1: /* error */ - case 2: /* fatal error */ - do { - if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0) - bump("Protocol error: Lost connection"); - rbuf[p++] = ch; - } while (p < sizeof(rbuf) && ch != '\n'); - rbuf[p - 1] = '\0'; - if (resp == 1) - tell_user(stderr, "%s\n", rbuf); - else - bump("%s", rbuf); - errs++; - return (-1); - } -} - -int sftp_recvdata(char *buf, int len) -{ - return ssh_scp_recv((unsigned char *) buf, len); -} -int sftp_senddata(char *buf, int len) -{ - back->send(backhandle, buf, len); - return 1; -} - -/* ---------------------------------------------------------------------- - * sftp-based replacement for the hacky `pscp -ls'. - */ -static int sftp_ls_compare(const void *av, const void *bv) -{ - const struct fxp_name *a = (const struct fxp_name *) av; - const struct fxp_name *b = (const struct fxp_name *) bv; - return strcmp(a->filename, b->filename); -} -void scp_sftp_listdir(char *dirname) -{ - struct fxp_handle *dirh; - struct fxp_names *names; - struct fxp_name *ournames; - struct sftp_packet *pktin; - struct sftp_request *req, *rreq; - int nnames, namesize; - int i; - - if (!fxp_init()) { - tell_user(stderr, "unable to initialise SFTP: %s", fxp_error()); - errs++; - return; - } - - printf("Listing directory %s\n", dirname); - - sftp_register(req = fxp_opendir_send(dirname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - dirh = fxp_opendir_recv(pktin, rreq); - - if (dirh == NULL) { - printf("Unable to open %s: %s\n", dirname, fxp_error()); - } else { - nnames = namesize = 0; - ournames = NULL; - - while (1) { - - sftp_register(req = fxp_readdir_send(dirh)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - names = fxp_readdir_recv(pktin, rreq); - - if (names == NULL) { - if (fxp_error_type() == SSH_FX_EOF) - break; - printf("Reading directory %s: %s\n", dirname, fxp_error()); - break; - } - if (names->nnames == 0) { - fxp_free_names(names); - break; - } - - if (nnames + names->nnames >= namesize) { - namesize += names->nnames + 128; - ournames = sresize(ournames, namesize, struct fxp_name); - } - - for (i = 0; i < names->nnames; i++) - ournames[nnames++] = names->names[i]; - - names->nnames = 0; /* prevent free_names */ - fxp_free_names(names); - } - sftp_register(req = fxp_close_send(dirh)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fxp_close_recv(pktin, rreq); - - /* - * Now we have our filenames. Sort them by actual file - * name, and then output the longname parts. - */ - qsort(ournames, nnames, sizeof(*ournames), sftp_ls_compare); - - /* - * And print them. - */ - for (i = 0; i < nnames; i++) - printf("%s\n", ournames[i].longname); - } -} - -/* ---------------------------------------------------------------------- - * Helper routines that contain the actual SCP protocol elements, - * implemented both as SCP1 and SFTP. - */ - -static struct scp_sftp_dirstack { - struct scp_sftp_dirstack *next; - struct fxp_name *names; - int namepos, namelen; - char *dirpath; - char *wildcard; - int matched_something; /* wildcard match set was non-empty */ -} *scp_sftp_dirstack_head; -static char *scp_sftp_remotepath, *scp_sftp_currentname; -static char *scp_sftp_wildcard; -static int scp_sftp_targetisdir, scp_sftp_donethistarget; -static int scp_sftp_preserve, scp_sftp_recursive; -static unsigned long scp_sftp_mtime, scp_sftp_atime; -static int scp_has_times; -static struct fxp_handle *scp_sftp_filehandle; -static struct fxp_xfer *scp_sftp_xfer; -static uint64 scp_sftp_fileoffset; - -void scp_source_setup(char *target, int shouldbedir) -{ - if (using_sftp) { - /* - * Find out whether the target filespec is in fact a - * directory. - */ - struct sftp_packet *pktin; - struct sftp_request *req, *rreq; - struct fxp_attrs attrs; - int ret; - - if (!fxp_init()) { - tell_user(stderr, "unable to initialise SFTP: %s", fxp_error()); - errs++; - return; - } - - sftp_register(req = fxp_stat_send(target)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - ret = fxp_stat_recv(pktin, rreq, &attrs); - - if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) - scp_sftp_targetisdir = 0; - else - scp_sftp_targetisdir = (attrs.permissions & 0040000) != 0; - - if (shouldbedir && !scp_sftp_targetisdir) { - bump("pscp: remote filespec %s: not a directory\n", target); - } - - scp_sftp_remotepath = dupstr(target); - - scp_has_times = 0; - } else { - (void) response(); - } -} - -int scp_send_errmsg(char *str) -{ - if (using_sftp) { - /* do nothing; we never need to send our errors to the server */ - } else { - back->send(backhandle, "\001", 1);/* scp protocol error prefix */ - back->send(backhandle, str, strlen(str)); - } - return 0; /* can't fail */ -} - -int scp_send_filetimes(unsigned long mtime, unsigned long atime) -{ - if (using_sftp) { - scp_sftp_mtime = mtime; - scp_sftp_atime = atime; - scp_has_times = 1; - return 0; - } else { - char buf[80]; - sprintf(buf, "T%lu 0 %lu 0\n", mtime, atime); - back->send(backhandle, buf, strlen(buf)); - return response(); - } -} - -int scp_send_filename(char *name, unsigned long size, int modes) -{ - if (using_sftp) { - char *fullname; - struct sftp_packet *pktin; - struct sftp_request *req, *rreq; - - if (scp_sftp_targetisdir) { - fullname = dupcat(scp_sftp_remotepath, "/", name, NULL); - } else { - fullname = dupstr(scp_sftp_remotepath); - } - - sftp_register(req = fxp_open_send(fullname, SSH_FXF_WRITE | - SSH_FXF_CREAT | SSH_FXF_TRUNC)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - scp_sftp_filehandle = fxp_open_recv(pktin, rreq); - - if (!scp_sftp_filehandle) { - tell_user(stderr, "pscp: unable to open %s: %s", - fullname, fxp_error()); - errs++; - return 1; - } - scp_sftp_fileoffset = uint64_make(0, 0); - scp_sftp_xfer = xfer_upload_init(scp_sftp_filehandle, - scp_sftp_fileoffset); - sfree(fullname); - return 0; - } else { - char buf[40]; - sprintf(buf, "C%04o %lu ", modes, size); - back->send(backhandle, buf, strlen(buf)); - back->send(backhandle, name, strlen(name)); - back->send(backhandle, "\n", 1); - return response(); - } -} - -int scp_send_filedata(char *data, int len) -{ - if (using_sftp) { - int ret; - struct sftp_packet *pktin; - - if (!scp_sftp_filehandle) { - return 1; - } - - while (!xfer_upload_ready(scp_sftp_xfer)) { - pktin = sftp_recv(); - ret = xfer_upload_gotpkt(scp_sftp_xfer, pktin); - if (!ret) { - tell_user(stderr, "error while writing: %s\n", fxp_error()); - errs++; - return 1; - } - } - - xfer_upload_data(scp_sftp_xfer, data, len); - - scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, len); - return 0; - } else { - int bufsize = back->send(backhandle, data, len); - - /* - * If the network transfer is backing up - that is, the - * remote site is not accepting data as fast as we can - * produce it - then we must loop on network events until - * we have space in the buffer again. - */ - while (bufsize > MAX_SCP_BUFSIZE) { - if (ssh_sftp_loop_iteration() < 0) - return 1; - bufsize = back->sendbuffer(backhandle); - } - - return 0; - } -} - -int scp_send_finish(void) -{ - if (using_sftp) { - struct fxp_attrs attrs; - struct sftp_packet *pktin; - struct sftp_request *req, *rreq; - int ret; - - while (!xfer_done(scp_sftp_xfer)) { - pktin = sftp_recv(); - xfer_upload_gotpkt(scp_sftp_xfer, pktin); - } - xfer_cleanup(scp_sftp_xfer); - - if (!scp_sftp_filehandle) { - return 1; - } - if (scp_has_times) { - attrs.flags = SSH_FILEXFER_ATTR_ACMODTIME; - attrs.atime = scp_sftp_atime; - attrs.mtime = scp_sftp_mtime; - sftp_register(req = fxp_fsetstat_send(scp_sftp_filehandle, attrs)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - ret = fxp_fsetstat_recv(pktin, rreq); - if (!ret) { - tell_user(stderr, "unable to set file times: %s\n", fxp_error()); - errs++; - } - } - sftp_register(req = fxp_close_send(scp_sftp_filehandle)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fxp_close_recv(pktin, rreq); - scp_has_times = 0; - return 0; - } else { - back->send(backhandle, "", 1); - return response(); - } -} - -char *scp_save_remotepath(void) -{ - if (using_sftp) - return scp_sftp_remotepath; - else - return NULL; -} - -void scp_restore_remotepath(char *data) -{ - if (using_sftp) - scp_sftp_remotepath = data; -} - -int scp_send_dirname(char *name, int modes) -{ - if (using_sftp) { - char *fullname; - char const *err; - struct fxp_attrs attrs; - struct sftp_packet *pktin; - struct sftp_request *req, *rreq; - int ret; - - if (scp_sftp_targetisdir) { - fullname = dupcat(scp_sftp_remotepath, "/", name, NULL); - } else { - fullname = dupstr(scp_sftp_remotepath); - } - - /* - * We don't worry about whether we managed to create the - * directory, because if it exists already it's OK just to - * use it. Instead, we will stat it afterwards, and if it - * exists and is a directory we will assume we were either - * successful or it didn't matter. - */ - sftp_register(req = fxp_mkdir_send(fullname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - ret = fxp_mkdir_recv(pktin, rreq); - - if (!ret) - err = fxp_error(); - else - err = "server reported no error"; - - sftp_register(req = fxp_stat_send(fullname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - ret = fxp_stat_recv(pktin, rreq, &attrs); - - if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) || - !(attrs.permissions & 0040000)) { - tell_user(stderr, "unable to create directory %s: %s", - fullname, err); - errs++; - return 1; - } - - scp_sftp_remotepath = fullname; - - return 0; - } else { - char buf[40]; - sprintf(buf, "D%04o 0 ", modes); - back->send(backhandle, buf, strlen(buf)); - back->send(backhandle, name, strlen(name)); - back->send(backhandle, "\n", 1); - return response(); - } -} - -int scp_send_enddir(void) -{ - if (using_sftp) { - sfree(scp_sftp_remotepath); - return 0; - } else { - back->send(backhandle, "E\n", 2); - return response(); - } -} - -/* - * Yes, I know; I have an scp_sink_setup _and_ an scp_sink_init. - * That's bad. The difference is that scp_sink_setup is called once - * right at the start, whereas scp_sink_init is called to - * initialise every level of recursion in the protocol. - */ -int scp_sink_setup(char *source, int preserve, int recursive) -{ - if (using_sftp) { - char *newsource; - - if (!fxp_init()) { - tell_user(stderr, "unable to initialise SFTP: %s", fxp_error()); - errs++; - return 1; - } - /* - * It's possible that the source string we've been given - * contains a wildcard. If so, we must split the directory - * away from the wildcard itself (throwing an error if any - * wildcardness comes before the final slash) and arrange - * things so that a dirstack entry will be set up. - */ - newsource = snewn(1+strlen(source), char); - if (!wc_unescape(newsource, source)) { - /* Yes, here we go; it's a wildcard. Bah. */ - char *dupsource, *lastpart, *dirpart, *wildcard; - dupsource = dupstr(source); - lastpart = stripslashes(dupsource, 0); - wildcard = dupstr(lastpart); - *lastpart = '\0'; - if (*dupsource && dupsource[1]) { - /* - * The remains of dupsource are at least two - * characters long, meaning the pathname wasn't - * empty or just `/'. Hence, we remove the trailing - * slash. - */ - lastpart[-1] = '\0'; - } else if (!*dupsource) { - /* - * The remains of dupsource are _empty_ - the whole - * pathname was a wildcard. Hence we need to - * replace it with ".". - */ - sfree(dupsource); - dupsource = dupstr("."); - } - - /* - * Now we have separated our string into dupsource (the - * directory part) and wildcard. Both of these will - * need freeing at some point. Next step is to remove - * wildcard escapes from the directory part, throwing - * an error if it contains a real wildcard. - */ - dirpart = snewn(1+strlen(dupsource), char); - if (!wc_unescape(dirpart, dupsource)) { - tell_user(stderr, "%s: multiple-level wildcards unsupported", - source); - errs++; - sfree(dirpart); - sfree(wildcard); - sfree(dupsource); - return 1; - } - - /* - * Now we have dirpart (unescaped, ie a valid remote - * path), and wildcard (a wildcard). This will be - * sufficient to arrange a dirstack entry. - */ - scp_sftp_remotepath = dirpart; - scp_sftp_wildcard = wildcard; - sfree(dupsource); - } else { - scp_sftp_remotepath = newsource; - scp_sftp_wildcard = NULL; - } - scp_sftp_preserve = preserve; - scp_sftp_recursive = recursive; - scp_sftp_donethistarget = 0; - scp_sftp_dirstack_head = NULL; - } - return 0; -} - -int scp_sink_init(void) -{ - if (!using_sftp) { - back->send(backhandle, "", 1); - } - return 0; -} - -#define SCP_SINK_FILE 1 -#define SCP_SINK_DIR 2 -#define SCP_SINK_ENDDIR 3 -#define SCP_SINK_RETRY 4 /* not an action; just try again */ -struct scp_sink_action { - int action; /* FILE, DIR, ENDDIR */ - char *buf; /* will need freeing after use */ - char *name; /* filename or dirname (not ENDDIR) */ - int mode; /* access mode (not ENDDIR) */ - unsigned long size; /* file size (not ENDDIR) */ - int settime; /* 1 if atime and mtime are filled */ - unsigned long atime, mtime; /* access times for the file */ -}; - -int scp_get_sink_action(struct scp_sink_action *act) -{ - if (using_sftp) { - char *fname; - int must_free_fname; - struct fxp_attrs attrs; - struct sftp_packet *pktin; - struct sftp_request *req, *rreq; - int ret; - - if (!scp_sftp_dirstack_head) { - if (!scp_sftp_donethistarget) { - /* - * Simple case: we are only dealing with one file. - */ - fname = scp_sftp_remotepath; - must_free_fname = 0; - scp_sftp_donethistarget = 1; - } else { - /* - * Even simpler case: one file _which we've done_. - * Return 1 (finished). - */ - return 1; - } - } else { - /* - * We're now in the middle of stepping through a list - * of names returned from fxp_readdir(); so let's carry - * on. - */ - struct scp_sftp_dirstack *head = scp_sftp_dirstack_head; - while (head->namepos < head->namelen && - (is_dots(head->names[head->namepos].filename) || - (head->wildcard && - !wc_match(head->wildcard, - head->names[head->namepos].filename)))) - head->namepos++; /* skip . and .. */ - if (head->namepos < head->namelen) { - head->matched_something = 1; - fname = dupcat(head->dirpath, "/", - head->names[head->namepos++].filename, - NULL); - must_free_fname = 1; - } else { - /* - * We've come to the end of the list; pop it off - * the stack and return an ENDDIR action (or RETRY - * if this was a wildcard match). - */ - if (head->wildcard) { - act->action = SCP_SINK_RETRY; - if (!head->matched_something) { - tell_user(stderr, "pscp: wildcard '%s' matched " - "no files", head->wildcard); - errs++; - } - sfree(head->wildcard); - - } else { - act->action = SCP_SINK_ENDDIR; - } - - sfree(head->dirpath); - sfree(head->names); - scp_sftp_dirstack_head = head->next; - sfree(head); - - return 0; - } - } - - /* - * Now we have a filename. Stat it, and see if it's a file - * or a directory. - */ - sftp_register(req = fxp_stat_send(fname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - ret = fxp_stat_recv(pktin, rreq, &attrs); - - if (!ret || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) { - tell_user(stderr, "unable to identify %s: %s", fname, - ret ? "file type not supplied" : fxp_error()); - errs++; - return 1; - } - - if (attrs.permissions & 0040000) { - struct scp_sftp_dirstack *newitem; - struct fxp_handle *dirhandle; - int nnames, namesize; - struct fxp_name *ournames; - struct fxp_names *names; - - /* - * It's a directory. If we're not in recursive mode, - * this merits a complaint (which is fatal if the name - * was specified directly, but not if it was matched by - * a wildcard). - * - * We skip this complaint completely if - * scp_sftp_wildcard is set, because that's an - * indication that we're not actually supposed to - * _recursively_ transfer the dir, just scan it for - * things matching the wildcard. - */ - if (!scp_sftp_recursive && !scp_sftp_wildcard) { - tell_user(stderr, "pscp: %s: is a directory", fname); - errs++; - if (must_free_fname) sfree(fname); - if (scp_sftp_dirstack_head) { - act->action = SCP_SINK_RETRY; - return 0; - } else { - return 1; - } - } - - /* - * Otherwise, the fun begins. We must fxp_opendir() the - * directory, slurp the filenames into memory, return - * SCP_SINK_DIR (unless this is a wildcard match), and - * set targetisdir. The next time we're called, we will - * run through the list of filenames one by one, - * matching them against a wildcard if present. - * - * If targetisdir is _already_ set (meaning we're - * already in the middle of going through another such - * list), we must push the other (target,namelist) pair - * on a stack. - */ - sftp_register(req = fxp_opendir_send(fname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - dirhandle = fxp_opendir_recv(pktin, rreq); - - if (!dirhandle) { - tell_user(stderr, "scp: unable to open directory %s: %s", - fname, fxp_error()); - if (must_free_fname) sfree(fname); - errs++; - return 1; - } - nnames = namesize = 0; - ournames = NULL; - while (1) { - int i; - - sftp_register(req = fxp_readdir_send(dirhandle)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - names = fxp_readdir_recv(pktin, rreq); - - if (names == NULL) { - if (fxp_error_type() == SSH_FX_EOF) - break; - tell_user(stderr, "scp: reading directory %s: %s\n", - fname, fxp_error()); - if (must_free_fname) sfree(fname); - sfree(ournames); - errs++; - return 1; - } - if (names->nnames == 0) { - fxp_free_names(names); - break; - } - if (nnames + names->nnames >= namesize) { - namesize += names->nnames + 128; - ournames = sresize(ournames, namesize, struct fxp_name); - } - for (i = 0; i < names->nnames; i++) - ournames[nnames++] = names->names[i]; - names->nnames = 0; /* prevent free_names */ - fxp_free_names(names); - } - sftp_register(req = fxp_close_send(dirhandle)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fxp_close_recv(pktin, rreq); - - newitem = snew(struct scp_sftp_dirstack); - newitem->next = scp_sftp_dirstack_head; - newitem->names = ournames; - newitem->namepos = 0; - newitem->namelen = nnames; - if (must_free_fname) - newitem->dirpath = fname; - else - newitem->dirpath = dupstr(fname); - if (scp_sftp_wildcard) { - newitem->wildcard = scp_sftp_wildcard; - newitem->matched_something = 0; - scp_sftp_wildcard = NULL; - } else { - newitem->wildcard = NULL; - } - scp_sftp_dirstack_head = newitem; - - if (newitem->wildcard) { - act->action = SCP_SINK_RETRY; - } else { - act->action = SCP_SINK_DIR; - act->buf = dupstr(stripslashes(fname, 0)); - act->name = act->buf; - act->size = 0; /* duhh, it's a directory */ - act->mode = 07777 & attrs.permissions; - if (scp_sftp_preserve && - (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) { - act->atime = attrs.atime; - act->mtime = attrs.mtime; - act->settime = 1; - } else - act->settime = 0; - } - return 0; - - } else { - /* - * It's a file. Return SCP_SINK_FILE. - */ - act->action = SCP_SINK_FILE; - act->buf = dupstr(stripslashes(fname, 0)); - act->name = act->buf; - if (attrs.flags & SSH_FILEXFER_ATTR_SIZE) { - if (uint64_compare(attrs.size, - uint64_make(0, ULONG_MAX)) > 0) { - act->size = ULONG_MAX; /* *boggle* */ - } else - act->size = attrs.size.lo; - } else - act->size = ULONG_MAX; /* no idea */ - act->mode = 07777 & attrs.permissions; - if (scp_sftp_preserve && - (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME)) { - act->atime = attrs.atime; - act->mtime = attrs.mtime; - act->settime = 1; - } else - act->settime = 0; - if (must_free_fname) - scp_sftp_currentname = fname; - else - scp_sftp_currentname = dupstr(fname); - return 0; - } - - } else { - int done = 0; - int i, bufsize; - int action; - char ch; - - act->settime = 0; - act->buf = NULL; - bufsize = 0; - - while (!done) { - if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0) - return 1; - if (ch == '\n') - bump("Protocol error: Unexpected newline"); - i = 0; - action = ch; - do { - if (ssh_scp_recv((unsigned char *) &ch, 1) <= 0) - bump("Lost connection"); - if (i >= bufsize) { - bufsize = i + 128; - act->buf = sresize(act->buf, bufsize, char); - } - act->buf[i++] = ch; - } while (ch != '\n'); - act->buf[i - 1] = '\0'; - switch (action) { - case '\01': /* error */ - tell_user(stderr, "%s\n", act->buf); - errs++; - continue; /* go round again */ - case '\02': /* fatal error */ - bump("%s", act->buf); - case 'E': - back->send(backhandle, "", 1); - act->action = SCP_SINK_ENDDIR; - return 0; - case 'T': - if (sscanf(act->buf, "%ld %*d %ld %*d", - &act->mtime, &act->atime) == 2) { - act->settime = 1; - back->send(backhandle, "", 1); - continue; /* go round again */ - } - bump("Protocol error: Illegal time format"); - case 'C': - case 'D': - act->action = (action == 'C' ? SCP_SINK_FILE : SCP_SINK_DIR); - break; - default: - bump("Protocol error: Expected control record"); - } - /* - * We will go round this loop only once, unless we hit - * `continue' above. - */ - done = 1; - } - - /* - * If we get here, we must have seen SCP_SINK_FILE or - * SCP_SINK_DIR. - */ - if (sscanf(act->buf, "%o %lu %n", &act->mode, &act->size, &i) != 2) - bump("Protocol error: Illegal file descriptor format"); - act->name = act->buf + i; - return 0; - } -} - -int scp_accept_filexfer(void) -{ - if (using_sftp) { - struct sftp_packet *pktin; - struct sftp_request *req, *rreq; - - sftp_register(req = fxp_open_send(scp_sftp_currentname, SSH_FXF_READ)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - scp_sftp_filehandle = fxp_open_recv(pktin, rreq); - - if (!scp_sftp_filehandle) { - tell_user(stderr, "pscp: unable to open %s: %s", - scp_sftp_currentname, fxp_error()); - errs++; - return 1; - } - scp_sftp_fileoffset = uint64_make(0, 0); - scp_sftp_xfer = xfer_download_init(scp_sftp_filehandle, - scp_sftp_fileoffset); - sfree(scp_sftp_currentname); - return 0; - } else { - back->send(backhandle, "", 1); - return 0; /* can't fail */ - } -} - -int scp_recv_filedata(char *data, int len) -{ - if (using_sftp) { - struct sftp_packet *pktin; - int ret, actuallen; - void *vbuf; - - xfer_download_queue(scp_sftp_xfer); - pktin = sftp_recv(); - ret = xfer_download_gotpkt(scp_sftp_xfer, pktin); - - if (ret < 0) { - tell_user(stderr, "pscp: error while reading: %s", fxp_error()); - errs++; - return -1; - } - - if (xfer_download_data(scp_sftp_xfer, &vbuf, &actuallen)) { - /* - * This assertion relies on the fact that the natural - * block size used in the xfer manager is at most that - * used in this module. I don't like crossing layers in - * this way, but it'll do for now. - */ - assert(actuallen <= len); - memcpy(data, vbuf, actuallen); - sfree(vbuf); - } else - actuallen = 0; - - scp_sftp_fileoffset = uint64_add32(scp_sftp_fileoffset, actuallen); - - return actuallen; - } else { - return ssh_scp_recv((unsigned char *) data, len); - } -} - -int scp_finish_filerecv(void) -{ - if (using_sftp) { - struct sftp_packet *pktin; - struct sftp_request *req, *rreq; - - /* - * Ensure that xfer_done() will work correctly, so we can - * clean up any outstanding requests from the file - * transfer. - */ - xfer_set_error(scp_sftp_xfer); - while (!xfer_done(scp_sftp_xfer)) { - void *vbuf; - int len; - - pktin = sftp_recv(); - xfer_download_gotpkt(scp_sftp_xfer, pktin); - if (xfer_download_data(scp_sftp_xfer, &vbuf, &len)) - sfree(vbuf); - } - xfer_cleanup(scp_sftp_xfer); - - sftp_register(req = fxp_close_send(scp_sftp_filehandle)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fxp_close_recv(pktin, rreq); - return 0; - } else { - back->send(backhandle, "", 1); - return response(); - } -} - -/* ---------------------------------------------------------------------- - * Send an error message to the other side and to the screen. - * Increment error counter. - */ -static void run_err(const char *fmt, ...) -{ - char *str, *str2; - va_list ap; - va_start(ap, fmt); - errs++; - str = dupvprintf(fmt, ap); - str2 = dupcat("scp: ", str, "\n", NULL); - sfree(str); - scp_send_errmsg(str2); - tell_user(stderr, "%s", str2); - va_end(ap); - sfree(str2); -} - -/* - * Execute the source part of the SCP protocol. - */ -static void source(char *src) -{ - unsigned long size; - unsigned long mtime, atime; - char *last; - RFile *f; - int attr; - unsigned long i; - unsigned long stat_bytes; - time_t stat_starttime, stat_lasttime; - - attr = file_type(src); - if (attr == FILE_TYPE_NONEXISTENT || - attr == FILE_TYPE_WEIRD) { - run_err("%s: %s file or directory", src, - (attr == FILE_TYPE_WEIRD ? "Not a" : "No such")); - return; - } - - if (attr == FILE_TYPE_DIRECTORY) { - if (recursive) { - /* - * Avoid . and .. directories. - */ - char *p; - p = strrchr(src, '/'); - if (!p) - p = strrchr(src, '\\'); - if (!p) - p = src; - else - p++; - if (!strcmp(p, ".") || !strcmp(p, "..")) - /* skip . and .. */ ; - else - rsource(src); - } else { - run_err("%s: not a regular file", src); - } - return; - } - - if ((last = strrchr(src, '/')) == NULL) - last = src; - else - last++; - if (strrchr(last, '\\') != NULL) - last = strrchr(last, '\\') + 1; - if (last == src && strchr(src, ':') != NULL) - last = strchr(src, ':') + 1; - - f = open_existing_file(src, &size, &mtime, &atime); - if (f == NULL) { - run_err("%s: Cannot open file", src); - return; - } - if (preserve) { - if (scp_send_filetimes(mtime, atime)) - return; - } - - if (verbose) - tell_user(stderr, "Sending file %s, size=%lu", last, size); - if (scp_send_filename(last, size, 0644)) - return; - - stat_bytes = 0; - stat_starttime = time(NULL); - stat_lasttime = 0; - - for (i = 0; i < size; i += 4096) { - char transbuf[4096]; - int j, k = 4096; - - if (i + k > size) - k = size - i; - if ((j = read_from_file(f, transbuf, k)) != k) { - if (statistics) - printf("\n"); - bump("%s: Read error", src); - } - if (scp_send_filedata(transbuf, k)) - bump("%s: Network error occurred", src); - - if (statistics) { - stat_bytes += k; - if (time(NULL) != stat_lasttime || i + k == size) { - stat_lasttime = time(NULL); - print_stats(last, size, stat_bytes, - stat_starttime, stat_lasttime); - } - } - - } - close_rfile(f); - - (void) scp_send_finish(); -} - -/* - * Recursively send the contents of a directory. - */ -static void rsource(char *src) -{ - char *last; - char *save_target; - DirHandle *dir; - - if ((last = strrchr(src, '/')) == NULL) - last = src; - else - last++; - if (strrchr(last, '\\') != NULL) - last = strrchr(last, '\\') + 1; - if (last == src && strchr(src, ':') != NULL) - last = strchr(src, ':') + 1; - - /* maybe send filetime */ - - save_target = scp_save_remotepath(); - - if (verbose) - tell_user(stderr, "Entering directory: %s", last); - if (scp_send_dirname(last, 0755)) - return; - - dir = open_directory(src); - if (dir != NULL) { - char *filename; - while ((filename = read_filename(dir)) != NULL) { - char *foundfile = dupcat(src, "/", filename, NULL); - source(foundfile); - sfree(foundfile); - sfree(filename); - } - } - close_directory(dir); - - (void) scp_send_enddir(); - - scp_restore_remotepath(save_target); -} - -/* - * Execute the sink part of the SCP protocol. - */ -static void sink(char *targ, char *src) -{ - char *destfname; - int targisdir = 0; - int exists; - int attr; - WFile *f; - unsigned long received; - int wrerror = 0; - unsigned long stat_bytes; - time_t stat_starttime, stat_lasttime; - char *stat_name; - - attr = file_type(targ); - if (attr == FILE_TYPE_DIRECTORY) - targisdir = 1; - - if (targetshouldbedirectory && !targisdir) - bump("%s: Not a directory", targ); - - scp_sink_init(); - while (1) { - struct scp_sink_action act; - if (scp_get_sink_action(&act)) - return; - - if (act.action == SCP_SINK_ENDDIR) - return; - - if (act.action == SCP_SINK_RETRY) - continue; - - if (targisdir) { - /* - * Prevent the remote side from maliciously writing to - * files outside the target area by sending a filename - * containing `../'. In fact, it shouldn't be sending - * filenames with any slashes or colons in at all; so - * we'll find the last slash, backslash or colon in the - * filename and use only the part after that. (And - * warn!) - * - * In addition, we also ensure here that if we're - * copying a single file and the target is a directory - * (common usage: `pscp host:filename .') the remote - * can't send us a _different_ file name. We can - * distinguish this case because `src' will be non-NULL - * and the last component of that will fail to match - * (the last component of) the name sent. - * - * Well, not always; if `src' is a wildcard, we do - * expect to get back filenames that don't correspond - * exactly to it. Ideally in this case, we would like - * to ensure that the returned filename actually - * matches the wildcard pattern - but one of SCP's - * protocol infelicities is that wildcard matching is - * done at the server end _by the server's rules_ and - * so in general this is infeasible. Hence, we only - * accept filenames that don't correspond to `src' if - * unsafe mode is enabled or we are using SFTP (which - * resolves remote wildcards on the client side and can - * be trusted). - */ - char *striptarget, *stripsrc; - - striptarget = stripslashes(act.name, 1); - if (striptarget != act.name) { - tell_user(stderr, "warning: remote host sent a compound" - " pathname '%s'", act.name); - tell_user(stderr, " renaming local file to '%s'", - striptarget); - } - - /* - * Also check to see if the target filename is '.' or - * '..', or indeed '...' and so on because Windows - * appears to interpret those like '..'. - */ - if (is_dots(striptarget)) { - bump("security violation: remote host attempted to write to" - " a '.' or '..' path!"); - } - - if (src) { - stripsrc = stripslashes(src, 1); - if (strcmp(striptarget, stripsrc) && - !using_sftp && !scp_unsafe_mode) { - tell_user(stderr, "warning: remote host tried to write " - "to a file called '%s'", striptarget); - tell_user(stderr, " when we requested a file " - "called '%s'.", stripsrc); - tell_user(stderr, " If this is a wildcard, " - "consider upgrading to SSH 2 or using"); - tell_user(stderr, " the '-unsafe' option. Renaming" - " of this file has been disallowed."); - /* Override the name the server provided with our own. */ - striptarget = stripsrc; - } - } - - if (targ[0] != '\0') - destfname = dir_file_cat(targ, striptarget); - else - destfname = dupstr(striptarget); - } else { - /* - * In this branch of the if, the target area is a - * single file with an explicitly specified name in any - * case, so there's no danger. - */ - destfname = dupstr(targ); - } - attr = file_type(destfname); - exists = (attr != FILE_TYPE_NONEXISTENT); - - if (act.action == SCP_SINK_DIR) { - if (exists && attr != FILE_TYPE_DIRECTORY) { - run_err("%s: Not a directory", destfname); - continue; - } - if (!exists) { - if (!create_directory(destfname)) { - run_err("%s: Cannot create directory", destfname); - continue; - } - } - sink(destfname, NULL); - /* can we set the timestamp for directories ? */ - continue; - } - - f = open_new_file(destfname); - if (f == NULL) { - run_err("%s: Cannot create file", destfname); - continue; - } - - if (scp_accept_filexfer()) - return; - - stat_bytes = 0; - stat_starttime = time(NULL); - stat_lasttime = 0; - stat_name = stripslashes(destfname, 1); - - received = 0; - while (received < act.size) { - char transbuf[4096]; - unsigned long blksize; - int read; - blksize = 4096; - if (blksize > (act.size - received)) - blksize = act.size - received; - read = scp_recv_filedata(transbuf, (int)blksize); - if (read <= 0) - bump("Lost connection"); - if (wrerror) - continue; - if (write_to_file(f, transbuf, read) != (int)read) { - wrerror = 1; - /* FIXME: in sftp we can actually abort the transfer */ - if (statistics) - printf("\r%-25.25s | %50s\n", - stat_name, - "Write error.. waiting for end of file"); - continue; - } - if (statistics) { - stat_bytes += read; - if (time(NULL) > stat_lasttime || - received + read == act.size) { - stat_lasttime = time(NULL); - print_stats(stat_name, act.size, stat_bytes, - stat_starttime, stat_lasttime); - } - } - received += read; - } - if (act.settime) { - set_file_times(f, act.mtime, act.atime); - } - - close_wfile(f); - if (wrerror) { - run_err("%s: Write error", destfname); - continue; - } - (void) scp_finish_filerecv(); - sfree(destfname); - sfree(act.buf); - } -} - -/* - * We will copy local files to a remote server. - */ -static void toremote(int argc, char *argv[]) -{ - char *src, *targ, *host, *user; - char *cmd; - int i, wc_type; - - targ = argv[argc - 1]; - - /* Separate host from filename */ - host = targ; - targ = colon(targ); - if (targ == NULL) - bump("targ == NULL in toremote()"); - *targ++ = '\0'; - if (*targ == '\0') - targ = "."; - /* Substitute "." for emtpy target */ - - /* Separate host and username */ - user = host; - host = strrchr(host, '@'); - if (host == NULL) { - host = user; - user = NULL; - } else { - *host++ = '\0'; - if (*user == '\0') - user = NULL; - } - - if (argc == 2) { - if (colon(argv[0]) != NULL) - bump("%s: Remote to remote not supported", argv[0]); - - wc_type = test_wildcard(argv[0], 1); - if (wc_type == WCTYPE_NONEXISTENT) - bump("%s: No such file or directory\n", argv[0]); - else if (wc_type == WCTYPE_WILDCARD) - targetshouldbedirectory = 1; - } - - cmd = dupprintf("scp%s%s%s%s -t %s", - verbose ? " -v" : "", - recursive ? " -r" : "", - preserve ? " -p" : "", - targetshouldbedirectory ? " -d" : "", targ); - do_cmd(host, user, cmd); - sfree(cmd); - - scp_source_setup(targ, targetshouldbedirectory); - - for (i = 0; i < argc - 1; i++) { - src = argv[i]; - if (colon(src) != NULL) { - tell_user(stderr, "%s: Remote to remote not supported\n", src); - errs++; - continue; - } - - wc_type = test_wildcard(src, 1); - if (wc_type == WCTYPE_NONEXISTENT) { - run_err("%s: No such file or directory", src); - continue; - } else if (wc_type == WCTYPE_FILENAME) { - source(src); - continue; - } else { - WildcardMatcher *wc; - char *filename; - - wc = begin_wildcard_matching(src); - if (wc == NULL) { - run_err("%s: No such file or directory", src); - continue; - } - - while ((filename = wildcard_get_filename(wc)) != NULL) { - source(filename); - sfree(filename); - } - - finish_wildcard_matching(wc); - } - } -} - -/* - * We will copy files from a remote server to the local machine. - */ -static void tolocal(int argc, char *argv[]) -{ - char *src, *targ, *host, *user; - char *cmd; - - if (argc != 2) - bump("More than one remote source not supported"); - - src = argv[0]; - targ = argv[1]; - - /* Separate host from filename */ - host = src; - src = colon(src); - if (src == NULL) - bump("Local to local copy not supported"); - *src++ = '\0'; - if (*src == '\0') - src = "."; - /* Substitute "." for empty filename */ - - /* Separate username and hostname */ - user = host; - host = strrchr(host, '@'); - if (host == NULL) { - host = user; - user = NULL; - } else { - *host++ = '\0'; - if (*user == '\0') - user = NULL; - } - - cmd = dupprintf("scp%s%s%s%s -f %s", - verbose ? " -v" : "", - recursive ? " -r" : "", - preserve ? " -p" : "", - targetshouldbedirectory ? " -d" : "", src); - do_cmd(host, user, cmd); - sfree(cmd); - - if (scp_sink_setup(src, preserve, recursive)) - return; - - sink(targ, src); -} - -/* - * We will issue a list command to get a remote directory. - */ -static void get_dir_list(int argc, char *argv[]) -{ - char *src, *host, *user; - char *cmd, *p, *q; - char c; - - src = argv[0]; - - /* Separate host from filename */ - host = src; - src = colon(src); - if (src == NULL) - bump("Local to local copy not supported"); - *src++ = '\0'; - if (*src == '\0') - src = "."; - /* Substitute "." for empty filename */ - - /* Separate username and hostname */ - user = host; - host = strrchr(host, '@'); - if (host == NULL) { - host = user; - user = NULL; - } else { - *host++ = '\0'; - if (*user == '\0') - user = NULL; - } - - cmd = snewn(4 * strlen(src) + 100, char); - strcpy(cmd, "ls -la '"); - p = cmd + strlen(cmd); - for (q = src; *q; q++) { - if (*q == '\'') { - *p++ = '\''; - *p++ = '\\'; - *p++ = '\''; - *p++ = '\''; - } else { - *p++ = *q; - } - } - *p++ = '\''; - *p = '\0'; - - do_cmd(host, user, cmd); - sfree(cmd); - - if (using_sftp) { - scp_sftp_listdir(src); - } else { - while (ssh_scp_recv((unsigned char *) &c, 1) > 0) - tell_char(stdout, c); - } -} - -/* - * Short description of parameters. - */ -static void usage(void) -{ - printf("PuTTY Secure Copy client\n"); - printf("%s\n", ver); - printf("Usage: pscp [options] [user@]host:source target\n"); - printf - (" pscp [options] source [source...] [user@]host:target\n"); - printf(" pscp [options] -ls [user@]host:filespec\n"); - printf("Options:\n"); - printf(" -p preserve file attributes\n"); - printf(" -q quiet, don't show statistics\n"); - printf(" -r copy directories recursively\n"); - printf(" -v show verbose messages\n"); - printf(" -load sessname Load settings from saved session\n"); - printf(" -P port connect to specified port\n"); - printf(" -l user connect with specified username\n"); - printf(" -pw passw login with specified password\n"); - printf(" -1 -2 force use of particular SSH protocol version\n"); - printf(" -C enable compression\n"); - printf(" -i key private key file for authentication\n"); - printf(" -batch disable all interactive prompts\n"); - printf(" -unsafe allow server-side wildcards (DANGEROUS)\n"); - printf(" -V print version information\n"); - printf(" -sftp force use of SFTP protocol\n"); - printf(" -scp force use of SCP protocol\n"); -#if 0 - /* - * -gui is an internal option, used by GUI front ends to get - * pscp to pass progress reports back to them. It's not an - * ordinary user-accessible option, so it shouldn't be part of - * the command-line help. The only people who need to know - * about it are programmers, and they can read the source. - */ - printf - (" -gui hWnd GUI mode with the windows handle for receiving messages\n"); -#endif - cleanup_exit(1); -} - -void version(void) -{ - printf("pscp: %s\n", ver); - cleanup_exit(1); -} - -void cmdline_error(char *p, ...) -{ - va_list ap; - fprintf(stderr, "pscp: "); - va_start(ap, p); - vfprintf(stderr, p, ap); - va_end(ap); - fprintf(stderr, "\n try typing just \"pscp\" for help\n"); - exit(1); -} - -/* - * Main program. (Called `psftp_main' because it gets called from - * *sftp.c; bit silly, I know, but it had to be called _something_.) - */ -int psftp_main(int argc, char *argv[]) -{ - int i; - - default_protocol = PROT_TELNET; - - flags = FLAG_STDERR -#ifdef FLAG_SYNCAGENT - | FLAG_SYNCAGENT -#endif - ; - cmdline_tooltype = TOOLTYPE_FILETRANSFER; - ssh_get_line = &console_get_line; - sk_init(); - - /* Load Default Settings before doing anything else. */ - do_defaults(NULL, &cfg); - loaded_session = FALSE; - - for (i = 1; i < argc; i++) { - int ret; - if (argv[i][0] != '-') - break; - ret = cmdline_process_param(argv[i], i+1 2) - targetshouldbedirectory = 1; - - if (colon(argv[argc - 1]) != NULL) - toremote(argc, argv); - else - tolocal(argc, argv); - } - - if (back != NULL && back->socket(backhandle) != NULL) { - char ch; - back->special(backhandle, TS_EOF); - ssh_scp_recv((unsigned char *) &ch, 1); - } - random_save_seed(); - - if (gui_mode) - gui_send_errcount(list, errs); - - cmdline_cleanup(); - console_provide_logctx(NULL); - back->free(backhandle); - backhandle = NULL; - back = NULL; - sk_cleanup(); - return (errs == 0 ? 0 : 1); -} - -/* end */