int ssh_open_url(url_t* urlp) { ftp->session = ssh_new(); if (!ftp->session) return -1; /* set log level */ if (ftp_get_verbosity() == vbDebug) { int verbosity = SSH_LOG_PROTOCOL; ssh_options_set(ftp->session, SSH_OPTIONS_LOG_VERBOSITY, &verbosity); } /* If we have ssh options from yafcrc, load them */ if (gvSSHOptions) { args_t *args = args_create(); args_init(args, 0, NULL); args_push_back(args, gvSSHOptions); int argc = 0; if (ssh_options_getopt(ftp->session, &argc, args->argv) != SSH_OK) { ftp_err(_("Failed to load SSH options from yafcrc config (ssh_options = '%s')\n"), gvSSHOptions); ssh_free(ftp->session); ftp->session = NULL; return -1; } args->argc = argc; args_destroy(args); } /* set host name */ ssh_options_set(ftp->session, SSH_OPTIONS_HOST, urlp->hostname); /* if we have port use that one */ if (urlp->port > 0) ssh_options_set(ftp->session, SSH_OPTIONS_PORT, &urlp->port); /* parse .ssh/config */ int r = ssh_options_parse_config(ftp->session, NULL); if (r != SSH_OK) { ftp_err(_("Failed to parse ssh config: %s\n"), ssh_get_error(ftp->session)); ssh_free(ftp->session); ftp->session = NULL; return r; } /* if we have username use that one */ if (urlp->username) ssh_options_set(ftp->session, SSH_OPTIONS_USER, urlp->username); /* connect to server */ r = ssh_connect(ftp->session); if (r != SSH_OK) { ftp_err(_("Couldn't initialise connection to server: %s\n"), ssh_get_error(ftp->session)); ssh_free(ftp->session); ftp->session = NULL; return r; } /* verify server */ if (verify_knownhost(ftp->session)) { ssh_disconnect(ftp->session); ssh_free(ftp->session); ftp->session = NULL; return -1; } /* authenticate user */ r = test_several_auth_methods(ftp->session, urlp); if (r != SSH_OK) { ftp_err(_("Authentication failed: %s\n"), ssh_get_error(ftp->session)); ssh_disconnect(ftp->session); ssh_free(ftp->session); ftp->session = NULL; return -1; } ftp->ssh_version = ssh_get_version(ftp->session); if (!ftp->ssh_version) { ftp_err(_("Couldn't initialise connection to server\n")); return -1; } ftp->sftp_session = sftp_new(ftp->session); if (!ftp->sftp_session) { ftp_err(_("Couldn't initialise ftp subsystem: %s\n"), ssh_get_error(ftp->session)); ssh_disconnect(ftp->session); ssh_free(ftp->session); ftp->session = NULL; return -1; } r = sftp_init(ftp->sftp_session); if (r != SSH_OK) { ftp_err(_("Couldn't initialise ftp subsystem: %s\n"), ssh_get_error(ftp->sftp_session)); sftp_free(ftp->sftp_session); ftp->sftp_session = NULL; ssh_disconnect(ftp->session); ssh_free(ftp->session); ftp->session = NULL; return r; } ftp->connected = true; ftp->loggedin = true; free(ftp->homedir); ftp->homedir = ftp_getcurdir(); url_destroy(ftp->url); ftp->url = url_clone(urlp); free(ftp->curdir); ftp->curdir = xstrdup(ftp->homedir); free(ftp->prevdir); ftp->prevdir = xstrdup(ftp->homedir); if (ftp->url->directory) ftp_chdir(ftp->url->directory); ftp_get_feat(); return 0; }
int ftp_login(const char *guessed_username, const char *anonpass) { int ptype, r; static url_t *purl = 0; if(!ftp_connected()) return 1; if(!ftp->url) return -1; #ifdef HAVE_LIBSSH if (ftp->session) /* login authentication is performed by the ssh program */ return 0; #endif ptype = proxy_type(ftp->url); if(purl) { url_destroy(purl); purl = 0; } if(ptype > 0) purl = url_clone(gvProxyUrl); r = get_username(ftp->url, guessed_username, false); if(r != 0) return r; if(ptype > 1 && ptype < 7) { r = get_username(purl, 0, true); if(r != 0) return r; } #ifdef SECFTP ftp->sec_complete = false; ftp->data_prot = prot_clear; /* don't use secure stuff if anonymous */ if(!url_isanon(ftp->url)) { list *mechlist; /* request a protection level */ if(ftp->url->protlevel) { if(sec_request_prot(ftp->url->protlevel) != 0) ftp_err(_("Invalid protection level '%s'\n"), ftp->url->protlevel); } /* get list of mechanisms to try */ mechlist = ftp->url->mech ? ftp->url->mech : gvDefaultMechanism; if(mechlist) { listitem *li = mechlist->first; int ret = 0; for(; li; li=li->next) { const char *mech_name; mech_name = secext_name((char *)li->data); if(mech_name == 0) { ftp_err(_("unknown mechanism '%s'\n"), (char *)li->data); continue; } if(mech_unsupported(mech_name)) { ftp_err(_("Yafc was not compiled with support for %s\n"), mech_name); continue; } ret = sec_login(host_getname(ftp->host), mech_name); if(ret == -1) { if(ftp->code == ctError && ftp->fullcode != 504 && ftp->fullcode != 534) url_setmech(ftp->url, "none"); } if(ret != 1) break; } } if(ftp->sec_complete) ftp_err(_("Authentication successful.\n")); else ftp_err(_("*** Using plaintext username" " and password ***\n")); } #endif if(url_isanon(ftp->url)) fprintf(stderr, _("logging in anonymously...\n")); ftp_set_tmp_verbosity(ftp->url->password ? vbError : vbCommand); switch(ptype) { case 0: default: ftp_cmd("USER %s", ftp->url->username); break; case 1: ftp_cmd("USER %s@%s", ftp->url->username, ftp->url->hostname); break; case 2: case 3: case 4: ftp_cmd("USER %s", purl->username); if(ftp->code == ctContinue) { r = get_password(purl, 0, true); if(r != 0) return 0; ftp_cmd("PASS %s", purl->password); /* FIXME: what reply code do we expect now? */ if(ftp->code < ctTransient) { if(ptype == 2) { ftp_cmd("USER %s@%s", ftp->url->username, ftp->url->hostname); } else { if(ptype == 3) ftp_cmd("SITE %s", purl->hostname); else ftp_cmd("OPEN %s", purl->hostname); if(ftp->code < ctTransient) ftp_cmd("USER %s", ftp->url->username); } } } break; case 5: ftp_cmd("USER %s@%s@%s", ftp->url->username, purl->username, ftp->url->hostname); break; case 6: ftp_cmd("USER %s@%s", purl->username, ftp->url->hostname); if(ftp->code == ctContinue) { r = get_password(purl, 0, true); if(r != 0) return 0; ftp_cmd("PASS %s", purl->password); if(ftp->code < ctTransient) ftp_cmd("USER %s", ftp->url->username); } break; case 7: ftp_cmd("USER %s@%s:%i", ftp->url->username, ftp->url->hostname, ftp->url->port); break; } if(ftp->code == ctContinue) { ftp->loggedin = false; r = get_password(ftp->url, anonpass, false); if(r != 0) return r; if(ptype == 5) { r = get_password(purl, 0, true); if(r != 0) { url_destroy(purl); purl = 0; return 0; } } ftp_set_tmp_verbosity(vbCommand); switch(ptype) { default: case 0: case 1: case 2: case 3: case 4: case 6: ftp_cmd("PASS %s", ftp->url->password); break; case 5: ftp_cmd("PASS %s@%s", ftp->url->password, purl->password); break; } } url_destroy(purl); purl = 0; if(ftp->code > ctContinue) { if(ftp->fullcode == 530 && ftp_loggedin()) { /* this probable means '530 Already logged in' */ return 2; } ftp->loggedin = false; return 1; } if(ftp->code == ctComplete) { ftp->loggedin = true; #ifdef SECFTP /* we are logged in, now set the requested data protection level * requested from the autologin information in the config file, * if any, else uses default protection level 'clear', ie * no protection on the data channel */ if(ftp->sec_complete) { sec_set_protection_level(); fprintf(stderr, _("Data protection is %s\n"), level_to_name(ftp->data_prot)); } #endif ftp->homedir = ftp_getcurdir(); ftp->curdir = xstrdup(ftp->homedir); ftp->prevdir = xstrdup(ftp->homedir); if(ftp->url->directory) ftp_chdir(ftp->url->directory); ftp_get_feat(); return 0; } if(ftp->code == ctTransient) return 1; return -1; }
int ssh_open_url(url_t *urlp) { char *sftp = gvSFTPServerProgram; char *s; int r; args_clear(ftp->ssh_args); if(urlp->sftp_server) sftp = urlp->sftp_server; args_push_back(ftp->ssh_args, gvSSHProgram); if(gvSSHOptions && strlen(gvSSHOptions)) args_push_back(ftp->ssh_args, gvSSHOptions); args_push_back(ftp->ssh_args, urlp->hostname); r = get_username(urlp, gvUsername, false); if(r != 0) return r; if(urlp->username) { args_push_back(ftp->ssh_args, "-l"); args_push_back(ftp->ssh_args, urlp->username); } else { /* we need a username, otherwise other functions will fail */ urlp->username = xstrdup(gvUsername); } if(urlp->port) { char *p; asprintf(&p, "%d", urlp->port); args_push_back(ftp->ssh_args, "-p"); args_push_back(ftp->ssh_args, p); free(p); } if(ftp_get_verbosity() == vbDebug) args_push_back(ftp->ssh_args, "-v"); /* no subsystem if the server-spec contains a '/' */ if(sftp == 0 || strchr(sftp, '/') == 0) args_push_back(ftp->ssh_args, "-s"); /* Otherwise finish up and return the arg array */ if(sftp != 0) args_push_back(ftp->ssh_args, sftp); else args_push_back(ftp->ssh_args, "sftp"); s = args_cat2(ftp->ssh_args, 0); ftp_trace("SSH args: %s\n", s); if(ftp_get_verbosity() == vbDebug) fprintf(stderr, "SSH args: %s\n", s); free(s); args_add_null(ftp->ssh_args); if(ssh_connect(ftp->ssh_args->argv, &ftp->ssh_in, &ftp->ssh_out, &ftp->ssh_pid) == -1) { return -1; } ftp->ssh_version = ssh_init(); if(ftp->ssh_version == -1) { ftp_err("Couldn't initialise connection to server\n"); return -1; } ftp->connected = true; ftp->loggedin = true; ftp->homedir = ftp_getcurdir(); url_destroy(ftp->url); ftp->url = url_clone(urlp); ftp->curdir = xstrdup(ftp->homedir); ftp->prevdir = xstrdup(ftp->homedir); if(ftp->url->directory) ftp_chdir(ftp->url->directory); ftp_get_feat(); return 0; }