+++ /dev/null
-/*
- * Across-the-wire migration utility for Citadel
- *
- * Copyright (c) 2009-2021 citadel.org
- *
- * This program is open source software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 3.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <string.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/utsname.h>
-#include <sys/wait.h>
-#include <signal.h>
-#include <netdb.h>
-#include <errno.h>
-#include <limits.h>
-#include <pwd.h>
-#include <time.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <libcitadel.h>
-#include "citadel.h"
-#include "axdefs.h"
-#include "sysdep.h"
-#include "config.h"
-#include "citadel_dirs.h"
-
-
-
-/*
- * Replacement for gets() that doesn't throw a compiler warning.
- * We're only using it for some simple prompts, so we don't need
- * to worry about attackers exploiting it.
- */
-void getz(char *buf) {
- char *ptr;
-
- ptr = fgets(buf, SIZ, stdin);
- if (!ptr) {
- buf[0] = 0;
- return;
- }
-
- ptr = strchr(buf, '\n');
- if (ptr) *ptr = 0;
-}
-
-
-int uds_connectsock(char *sockpath) {
- int s;
- struct sockaddr_un addr;
-
- memset(&addr, 0, sizeof(addr));
- addr.sun_family = AF_UNIX;
- strcpy(addr.sun_path, sockpath);
-
- s = socket(AF_UNIX, SOCK_STREAM, 0);
- if (s < 0) {
- fprintf(stderr, "sendcommand: Can't create socket: %s\n", strerror(errno));
- exit(3);
- }
-
- if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
- fprintf(stderr, "sendcommand: can't connect: %s\n", strerror(errno));
- close(s);
- exit(3);
- }
-
- return s;
-}
-
-
-/*
- * input binary data from socket
- */
-void serv_read(int serv_sock, char *buf, int bytes) {
- int len, rlen;
-
- len = 0;
- while (len < bytes) {
- rlen = read(serv_sock, &buf[len], bytes - len);
- if (rlen < 1) {
- return;
- }
- len = len + rlen;
- }
-}
-
-
-/*
- * send binary to server
- */
-void serv_write(int serv_sock, char *buf, int nbytes) {
- int bytes_written = 0;
- int retval;
- while (bytes_written < nbytes) {
- retval = write(serv_sock, &buf[bytes_written], nbytes - bytes_written);
- if (retval < 1) {
- return;
- }
- bytes_written = bytes_written + retval;
- }
-}
-
-
-/*
- * input string from socket - implemented in terms of serv_read()
- */
-void serv_gets(int serv_sock, char *buf) {
- int i;
-
- /* Read one character at a time.
- */
- for (i = 0;; i++) {
- serv_read(serv_sock, &buf[i], 1);
- if (buf[i] == '\n' || i == (SIZ-1))
- break;
- }
-
- /* If we got a long line, discard characters until the newline.
- */
- if (i == (SIZ-1)) {
- while (buf[i] != '\n') {
- serv_read(serv_sock, &buf[i], 1);
- }
- }
-
- /* Strip all trailing nonprintables (crlf)
- */
- buf[i] = 0;
-}
-
-
-/*
- * send line to server - implemented in terms of serv_write()
- */
-void serv_puts(int serv_sock, char *buf) {
- serv_write(serv_sock, buf, strlen(buf));
- serv_write(serv_sock, "\n", 1);
-}
-
-
-int main(int argc, char *argv[]) {
- char ctdldir[PATH_MAX]=CTDLDIR;
- char yesno[5];
- int cmdexit = 0; // when something fails, set cmdexit to nonzero, and skip to the end
- char cmd[PATH_MAX];
- char buf[PATH_MAX];
- char socket_path[PATH_MAX];
- char remote_user[SIZ];
- char remote_host[SIZ];
- char remote_sendcommand[PATH_MAX];
- FILE *sourcefp = NULL;
- int linecount = 0;
- int a;
- int local_admin_socket = (-1);
- pid_t sshpid = (-1);
-
- /* Parse command line */
- while ((a = getopt(argc, argv, "h:")) != EOF) {
- switch (a) {
- case 'h':
- strcpy(ctdldir, optarg);
- break;
- default:
- fprintf(stderr, "sendcommand: usage: ctdlmigrate [-h server_dir]\n");
- return(1);
- }
- }
-
- if (chdir(ctdldir) != 0) {
- fprintf(stderr, "sendcommand: %s: %s\n", ctdldir, strerror(errno));
- exit(errno);
- }
-
- printf( "\033[2J\033[H\n"
- "-------------------------------------------\n"
- "Over-the-wire migration utility for Citadel\n"
- "-------------------------------------------\n"
- "\n"
- "This utility is designed to migrate your Citadel installation\n"
- "to a new host system via a network connection, without disturbing\n"
- "the source system. The target may be a different CPU architecture\n"
- "and/or operating system. The source system should be running\n"
- "Citadel version %d or newer, and the target system should be running\n"
- "either the same version or a newer version. You will also need\n"
- "the 'rsync' utility, and OpenSSH v4 or newer.\n"
- "\n"
- "You must run this utility on the TARGET SYSTEM. Any existing data\n"
- "on this system will be ERASED. Your target system will be on this\n"
- "host in %s.\n"
- "\n"
- "Do you wish to continue? "
- ,
- EXPORT_REV_MIN, ctdldir
- );
-
- if ((fgets(yesno, sizeof yesno, stdin) == NULL) || (tolower(yesno[0]) != 'y')) {
- cmdexit = 1;
- }
-
- if (!cmdexit) {
- printf("\n\nGreat! First we will check some things out here on our target\n"
- "system to make sure it is ready to receive data.\n\n");
-
- printf("Checking connectivity to Citadel in %s...\n", ctdldir);
- local_admin_socket = uds_connectsock("citadel-admin.socket");
-
- serv_gets(local_admin_socket, buf);
- puts(buf);
- if (buf[0] != '2') {
- cmdexit = 1;
- }
- }
-
- if (!cmdexit) {
- serv_puts(local_admin_socket, "ECHO Connection to Citadel Server succeeded.");
- serv_gets(local_admin_socket, buf);
- puts(buf);
- if (buf[0] != '2') {
- cmdexit = 1;
- }
- }
-
- if (!cmdexit) {
- printf("\nOK, this side is ready to go. Now we must connect to the source system.\n\n");
- printf("Enter the host name or IP address of the source system\n"
- "(example: ctdl.foo.org)\n"
- "--> ");
- getz(remote_host);
-
- while (IsEmptyStr(remote_user)) {
- printf("\nEnter the name of a user on %s who has full access to Citadel files\n"
- "(usually root)\n--> ",
- remote_host);
- getz(remote_user);
- }
-
- printf("\nEstablishing an SSH connection to the source system...\n\n");
- sprintf(socket_path, "/tmp/ctdlmigrate-socket.%ld.%d", time(NULL), getpid());
- unlink(socket_path);
-
- snprintf(cmd, sizeof cmd, "ssh -MNf -S %s -l %s %s", socket_path, remote_user, remote_host);
- sshpid = fork();
- if (sshpid < 0) {
- printf("%s\n", strerror(errno));
- cmdexit = errno;
- }
- else if (sshpid == 0) {
- execl("/bin/bash", "bash", "-c", cmd, (char *) NULL);
- exit(1);
- }
- else { // Wait for SSH to go into the background
- waitpid(sshpid, NULL, 0);
- }
- }
-
- if (!cmdexit) {
- printf("\nTesting a command over the connection...\n\n");
- snprintf(cmd, sizeof cmd, "ssh -S %s %s@%s 'echo Remote commands are executing successfully.'",
- socket_path, remote_user, remote_host);
- cmdexit = system(cmd);
- printf("\n");
- if (cmdexit != 0) {
- printf("Remote commands are not succeeding.\n\n");
- }
- }
-
- if (!cmdexit) {
- printf("\nLocating the remote 'sendcommand' and Citadel installation...\n");
- snprintf(remote_sendcommand, sizeof remote_sendcommand, "/usr/local/citadel/sendcommand");
- snprintf(cmd, sizeof cmd, "ssh -S %s %s@%s %s NOOP", socket_path, remote_user, remote_host, remote_sendcommand);
- cmdexit = system(cmd);
-
- if (cmdexit) {
- snprintf(remote_sendcommand, sizeof remote_sendcommand, "/usr/sbin/sendcommand");
- snprintf(cmd, sizeof cmd, "ssh -S %s %s@%s %s NOOP", socket_path, remote_user, remote_host, remote_sendcommand);
- cmdexit = system(cmd);
- }
-
- if (cmdexit) {
- printf("\nUnable to locate Citadel programs on the remote system. Please enter\n"
- "the name of the directory on %s which contains the 'sendcommand' program.\n"
- "(example: /opt/foo/citadel)\n"
- "--> ", remote_host);
- getz(buf);
- snprintf(remote_sendcommand, sizeof remote_sendcommand, "%s/sendcommand", buf);
- snprintf(cmd, sizeof cmd, "ssh -S %s %s@%s %s NOOP", socket_path, remote_user, remote_host, remote_sendcommand);
- cmdexit = system(cmd);
- if (!cmdexit) {
- printf("ctdlmigrate was unable to attach to the remote Citadel system.\n\n");
- }
- }
- }
-
- if (!cmdexit) {
- printf("\033[2J\n");
- printf("\033[2;0H\033[33mMigrating from %s\033[0m\n\n", remote_host);
-
- snprintf(cmd, sizeof cmd, "ssh -S %s %s@%s %s -w3600 MIGR export", socket_path, remote_user, remote_host, remote_sendcommand);
- sourcefp = popen(cmd, "r");
- if (!sourcefp) {
- cmdexit = errno;
- printf("\n%s\n\n", strerror(errno));
- }
- }
-
- if (!cmdexit) {
- serv_puts(local_admin_socket, "MIGR import");
- serv_gets(local_admin_socket, buf);
- if (buf[0] != '4') {
- printf("\n%s\n", buf);
- cmdexit = 3;
- }
- }
-
- if (!cmdexit) {
- char *ptr;
- time_t last_update = time(NULL);
- while (ptr = fgets(buf, SIZ, sourcefp), (ptr != NULL)) {
- ptr = strchr(buf, '\n');
- if (ptr) *ptr = 0; // remove the newline character
- ++linecount;
- if (!strncasecmp(buf, "<progress>", 10)) {
- printf("\033[11;0HPercent complete: \033[32m%d\033[0m\n", atoi(&buf[10]));
- }
- if (time(NULL) != last_update) {
- last_update = time(NULL);
- printf("\033[10;0H Lines received: \033[32m%d\033[0m\n", linecount);
- }
- serv_puts(local_admin_socket, buf);
- }
-
- serv_puts(local_admin_socket, "000");
- }
-
- // FIXME restart the local server now
-
- pclose(sourcefp);
- printf("\nShutting down the socket connection...\n\n");
- unlink(socket_path);
- kill(sshpid, SIGKILL);
- exit(cmdexit);
-}
projects / citadel.git / blobdiff