+++ /dev/null
-/*
- * Amanda, The Advanced Maryland Automatic Network Disk Archiver
- * Copyright (c) 1991-1998 University of Maryland at College Park
- * All Rights Reserved.
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation, and that the name of U.M. not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission. U.M. makes no representations about the
- * suitability of this software for any purpose. It is provided "as is"
- * without express or implied warranty.
- *
- * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
- * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- * Authors: the Amanda Development Team. Its members are listed in a
- * file named AUTHORS, in the root directory of this distribution.
- */
-/* $Id: amidxtaped.c,v 1.73 2006/07/25 19:06:46 martinea Exp $
- *
- * This daemon extracts a dump image off a tape for amrecover and
- * returns it over the network. It basically, reads a number of
- * arguments from stdin (it is invoked via inet), one per line,
- * preceeded by the number of them, and forms them into an argv
- * structure, then execs amrestore
- */
-
-#include "amanda.h"
-#include "version.h"
-#include "clock.h"
-#include "restore.h"
-#include "cmdline.h"
-
-#include "changer.h"
-#include "conffile.h"
-#include "logfile.h"
-#include "amfeatures.h"
-#include "stream.h"
-#include "amandad.h"
-#include "server_util.h"
-
-#define amidxtaped_debug(i,x) do { \
- if ((i) <= debug_amidxtaped) { \
- dbprintf(x); \
- } \
-} while (0)
-
-#define TIMEOUT 30
-
-static char *pgm = "amidxtaped"; /* in case argv[0] is not set */
-
-extern char *rst_conf_logfile;
-
-static int get_lock = 0;
-static int from_amandad;
-
-static am_feature_t *our_features = NULL;
-static am_feature_t *their_features = NULL;
-static g_option_t *g_options = NULL;
-static int ctlfdin, ctlfdout, datafdout;
-static char *amandad_auth = NULL;
-static FILE *cmdin, *cmdout;
-
-static char *get_client_line(FILE *in);
-static void check_security_buffer(char *);
-static char *get_client_line_fd(int);
-
-/* exit routine */
-static pid_t parent_pid = -1;
-static void cleanup(void);
-
-int main(int argc, char **argv);
-
-/* get a line from client - line terminated by \r\n */
-static char *
-get_client_line(FILE *in)
-{
- static char *line = NULL;
- char *part = NULL;
- size_t len;
-
- amfree(line);
- while(1) {
- if((part = agets(in)) == NULL) {
- if(errno != 0) {
- dbprintf(_("read error: %s\n"), strerror(errno));
- } else {
- dbprintf(_("EOF reached\n"));
- }
- if(line) {
- dbprintf(_("s: unprocessed input:\n"));
- dbprintf("-----\n");
- dbprintf("%s\n", line);
- dbprintf("-----\n");
- }
- amfree(line);
- amfree(part);
- dbclose();
- exit(1);
- /*NOTREACHED*/
- }
- if(line) {
- strappend(line, part);
- amfree(part);
- } else {
- line = part;
- part = NULL;
- }
- if((len = strlen(line)) > 0 && line[len-1] == '\r') {
- line[len-1] = '\0'; /* zap the '\r' */
- break;
- }
- /*
- * Hmmm. We got a "line" from agets(), which means it saw
- * a '\n' (or EOF, etc), but there was not a '\r' before it.
- * Put a '\n' back in the buffer and loop for more.
- */
- strappend(line, "\n");
- }
- dbprintf("> %s\n", line);
- return line;
-}
-
-/* get a line from client - line terminated by \r\n */
-static char *
-get_client_line_fd(
- int fd)
-{
- static char *line = NULL;
- static size_t line_size = 0;
- char *s = line;
- size_t len = 0;
- char c;
- ssize_t nb;
-
- if(line == NULL) { /* first time only, allocate initial buffer */
- s = line = alloc(128);
- line_size = 128;
- }
- while(1) {
- nb = read(fd, &c, 1);
- if (nb <= 0) {
- /* EOF or error */
- if ((nb <= 0) && ((errno == EINTR) || (errno == EAGAIN))) {
- /* Keep looping if failure is temporary */
- continue;
- }
- dbprintf(_("%s: Control pipe read error - %s\n"),
- pgm, strerror(errno));
- break;
- }
-
- if(len >= line_size-1) { /* increase buffer size */
- line_size *= 2;
- line = realloc(line, line_size);
- if (line == NULL) {
- error(_("Memory reallocation failure"));
- /*NOTREACHED*/
- }
- s = &line[len];
- }
- *s = c;
- if(c == '\n') {
- if(len > 0 && *(s-1) == '\r') { /* remove '\r' */
- s--;
- len--;
- }
- *s = '\0';
- return line;
- }
- s++;
- len++;
- }
- line[len] = '\0';
- return line;
-}
-
-
-void
-check_security_buffer(
- char * buffer)
-{
- socklen_t_equiv i;
- struct sockaddr_in addr;
- char *s, *fp, ch;
- char *errstr = NULL;
-
- dbprintf(_("check_security_buffer(buffer='%s')\n"), buffer);
-
- i = SIZEOF(addr);
- if (getpeername(0, (struct sockaddr *)&addr, &i) == -1) {
- error(_("getpeername: %s"), strerror(errno));
- /*NOTREACHED*/
- }
- if ((addr.sin_family != (sa_family_t)AF_INET)
- || (ntohs(addr.sin_port) == 20)) {
- error(_("connection rejected from %s family %d port %d"),
- inet_ntoa(addr.sin_addr), addr.sin_family, htons(addr.sin_port));
- /*NOTREACHED*/
- }
-
- /* do the security thing */
- s = buffer;
- ch = *s++;
-
- skip_whitespace(s, ch);
- if (ch == '\0') {
- error(_("cannot parse SECURITY line"));
- /*NOTREACHED*/
- }
- fp = s-1;
- skip_non_whitespace(s, ch);
- s[-1] = '\0';
- if (strcmp(fp, "SECURITY") != 0) {
- error(_("cannot parse SECURITY line"));
- /*NOTREACHED*/
- }
- skip_whitespace(s, ch);
- if (!check_security((sockaddr_union *)&addr, s-1, 0, &errstr)) {
- error(_("security check failed: %s"), errstr);
- /*NOTREACHED*/
- }
-}
-
-int
-main(
- int argc,
- char ** argv)
-{
- char *buf = NULL;
- int data_sock = -1;
- in_port_t data_port = (in_port_t)-1;
- socklen_t_equiv socklen;
- struct sockaddr_in addr;
- GSList *dumpspecs;
- tapelist_t *tapes = NULL;
- char *their_feature_string = NULL;
- rst_flags_t *rst_flags;
- int use_changer = 0;
- int re_end;
- char *re_config = NULL;
- char *conf_tapetype;
- tapetype_t *tape;
- char *line;
- char *tapedev;
- dumpspec_t *ds;
-
- /*
- * Configure program for internationalization:
- * 1) Only set the message locale for now.
- * 2) Set textdomain for all amanda related programs to "amanda"
- * We don't want to be forced to support dozens of message catalogs.
- */
- setlocale(LC_MESSAGES, "C");
- textdomain("amanda");
-
- safe_fd(DATA_FD_OFFSET, 4);
- safe_cd();
-
- /* Don't die when child closes pipe */
- signal(SIGPIPE, SIG_IGN);
-
- rst_flags = new_rst_flags();
- rst_flags->mask_splits = 1; /* for older clients */
- rst_flags->amidxtaped = 1;
- our_features = am_init_feature_set();
- their_features = am_set_default_feature_set();
-
- /*
- * When called via inetd, it is not uncommon to forget to put the
- * argv[0] value on the config line. On some systems (e.g. Solaris)
- * this causes argv and/or argv[0] to be NULL, so we have to be
- * careful getting our name.
- */
- if (argc >= 1 && argv != NULL && argv[0] != NULL) {
- if((pgm = strrchr(argv[0], '/')) != NULL) {
- pgm++;
- } else {
- pgm = argv[0];
- }
- }
-
- set_pname(pgm);
-
- if(argv && argv[1] && strcmp(argv[1], "amandad") == 0) {
- from_amandad = 1;
- if(argv[2])
- amandad_auth = argv[2];
- }
- else {
- from_amandad = 0;
- safe_fd(-1, 0);
- }
-
- /* initialize */
- /* close stderr first so that debug file becomes it - amrestore
- chats to stderr, which we don't want going to client */
- /* if no debug file, ship to bit bucket */
- (void)close(STDERR_FILENO);
- dbopen(DBG_SUBDIR_SERVER);
- startclock();
- dbprintf(_("%s: version %s\n"), pgm, version());
- debug_dup_stderr_to_debug();
-
- if (! (argc >= 1 && argv != NULL && argv[0] != NULL)) {
- dbprintf(_("WARNING: argv[0] not defined: check inetd.conf\n"));
- }
-
- if(from_amandad == 0) {
- socklen = SIZEOF(addr);
- if (getpeername(0, (struct sockaddr *)&addr, &socklen) == -1) {
- error(_("getpeername: %s"), strerror(errno));
- /*NOTREACHED*/
- }
- if ((addr.sin_family != (sa_family_t)AF_INET)
- || (ntohs(addr.sin_port) == 20)) {
- error(_("connection rejected from %s family %d port %d"),
- inet_ntoa(addr.sin_addr), addr.sin_family,
- htons(addr.sin_port));
- /*NOTREACHED*/
- }
-
- /* do the security thing */
- amfree(buf);
- fflush(stdout);
- cmdout = stdout;
- cmdin = stdin;
- buf = stralloc(get_client_line(cmdin));
- check_security_buffer(buf);
- }
- else {
- ctlfdout = DATA_FD_OFFSET + 0;
- ctlfdin = DATA_FD_OFFSET + 1;
- datafdout = DATA_FD_OFFSET + 2;
- close(DATA_FD_OFFSET +3);
-
- /* read the REQ packet */
- for(; (line = agets(stdin)) != NULL; free(line)) {
- if(strncmp_const(line, "OPTIONS ") == 0) {
- if (g_options)
- error(_("ERROR recover program sent multiple OPTIONS"));
- g_options = parse_g_options(line+8, 1);
- if(!g_options->hostname) {
- g_options->hostname = alloc(MAX_HOSTNAME_LENGTH+1);
- gethostname(g_options->hostname, MAX_HOSTNAME_LENGTH);
- g_options->hostname[MAX_HOSTNAME_LENGTH] = '\0';
- }
- }
- }
- amfree(line);
-
- if(amandad_auth && g_options->auth) {
- if(strcasecmp(amandad_auth, g_options->auth) != 0) {
- g_printf(_("ERROR recover program ask for auth=%s while amidxtaped is configured for '%s'\n"),
- g_options->auth, amandad_auth);
- error(_("ERROR recover program ask for auth=%s while amidxtaped is configured for '%s'"),
- g_options->auth, amandad_auth);
- /*NOTREACHED*/
- }
- }
- /* send the REP packet */
- g_printf("CONNECT CTL %d DATA %d\n", DATA_FD_OFFSET, DATA_FD_OFFSET+1);
- g_printf("\n");
- fflush(stdout);
- fclose(stdin);
- fclose(stdout);
- cmdout = fdopen(ctlfdout, "a");
- if (!cmdout) {
- error(_("amidxtaped: Can't fdopen(ctlfdout): %s"), strerror(errno));
- /*NOTREACHED*/
- }
- cmdin = fdopen(ctlfdin, "r");
- if (!cmdin) {
- error(_("amidxtaped: Can't fdopen(ctlfdin): %s"), strerror(errno));
- /*NOTREACHED*/
- }
- }
-
- ds = dumpspec_new(NULL, NULL, NULL, NULL);
- for (re_end = 0; re_end == 0; ) {
- char *s, ch;
- amfree(buf);
- buf = stralloc(get_client_line(cmdin));
- s = buf;
- if(strncmp_const_skip(buf, "LABEL=", s, ch) == 0) {
- tapes = unmarshal_tapelist_str(s);
- }
- else if(strncmp_const_skip(buf, "FSF=", s, ch) == 0) {
- rst_flags->fsf = OFF_T_ATOI(s);
- }
- else if(strncmp_const_skip(buf, "HEADER", s, ch) == 0) {
- rst_flags->headers = 1;
- }
- else if(strncmp_const_skip(buf, "FEATURES=", s, ch) == 0) {
- char *our_feature_string = NULL;
- their_feature_string = stralloc(s);
- am_release_feature_set(their_features);
- their_features = am_string_to_feature(their_feature_string);
- amfree(their_feature_string);
- our_feature_string = am_feature_to_string(our_features);
- if(from_amandad == 1)
- g_fprintf(cmdout,"FEATURES=%s\r\n", our_feature_string);
- else
- g_fprintf(cmdout,"%s", our_feature_string);
- fflush(cmdout);
- amfree(our_feature_string);
- }
- else if(strncmp_const_skip(buf, "DEVICE=", s, ch) == 0) {
- rst_flags->alt_tapedev= stralloc(s);
- }
- else if(strncmp_const_skip(buf, "HOST=", s, ch) == 0) {
- if (ds->host) {
- dbprintf(_("WARNING: HOST appeared twice in client request.\n"));
- amfree(ds->host);
- }
- ds->host = stralloc(s);
- }
- else if(strncmp_const_skip(buf, "DISK=", s, ch) == 0) {
- if (ds->disk) {
- dbprintf(_("WARNING: DISK appeared twice in client request.\n"));
- amfree(ds->disk);
- }
- ds->disk = stralloc(s);
- }
- else if(strncmp_const_skip(buf, "DATESTAMP=", s, ch) == 0) {
- if (ds->datestamp) {
- dbprintf(_("WARNING: DATESTAMP appeared twice in client request.\n"));
- amfree(ds->datestamp);
- }
- ds->datestamp = stralloc(s);
- }
- else if(strncmp_const(buf, "END") == 0) {
- re_end = 1;
- }
- else if(strncmp_const_skip(buf, "CONFIG=", s, ch) == 0) {
- re_config = stralloc(s);
- if(strlen(re_config) == 0)
- amfree(re_config);
- }
- else if(buf[0] != '\0' && buf[0] >= '0' && buf[0] <= '9') {
- re_end = 1;
- }
- }
- amfree(buf);
-
- if(re_config) {
- config_init(CONFIG_INIT_EXPLICIT_NAME, re_config);
- dbrename(re_config, DBG_SUBDIR_SERVER);
- } else {
- config_init(0, NULL);
- }
-
- if (config_errors(NULL) >= CFGERR_ERRORS) {
- g_critical(_("errors processing config file"));
- }
-
- check_running_as(RUNNING_AS_DUMPUSER_PREFERRED);
-
- if(tapes &&
- (!rst_flags->alt_tapedev ||
- (re_config && ( strcmp(rst_flags->alt_tapedev,
- getconf_str(CNF_AMRECOVER_CHANGER)) == 0 ||
- strcmp(rst_flags->alt_tapedev,
- getconf_str(CNF_TPCHANGER)) == 0 ) ) ) ) {
- /* We need certain options, if restoring from more than one tape */
- if(tapes->next && !am_has_feature(their_features, fe_recover_splits)) {
- error(_("Client must support split dumps to restore requested data."));
- /*NOTREACHED*/
- }
- dbprintf(_("Restoring from changer, checking labels\n"));
- rst_flags->check_labels = 1;
- use_changer = 1;
- }
-
- /* build the dumpspec list from our single dumpspec */
- dumpspecs = g_slist_append(NULL, (gpointer)ds);
- ds = NULL;
-
- if(!tapes && rst_flags->alt_tapedev){
- dbprintf(_("Looks like we're restoring from a holding file...\n"));
- tapes = unmarshal_tapelist_str(rst_flags->alt_tapedev);
- tapes->isafile = 1;
- amfree(rst_flags->alt_tapedev);
- rst_flags->alt_tapedev = NULL;
- use_changer = FALSE;
- }
-
- tapedev = getconf_str(CNF_TAPEDEV);
- /* If we'll be stepping on the tape server's devices, lock them. */
- if(re_config &&
- (use_changer || (rst_flags->alt_tapedev && tapedev &&
- strcmp(rst_flags->alt_tapedev, tapedev) == 0) ) ) {
- dbprintf(_("Locking devices\n"));
- parent_pid = getpid();
- atexit(cleanup);
- get_lock = lock_logfile();
- }
- if (get_lock)
- log_add(L_INFO, "%s pid %ld", get_pname(), (long)getpid());
-
- /* Init the tape changer */
- if(tapes && use_changer && changer_init() == 0) {
- dbprintf(_("No changer available\n"));
- }
-
- /* Read the default block size from the tape type */
- if(re_config && (conf_tapetype = getconf_str(CNF_TAPETYPE)) != NULL) {
- tape = lookup_tapetype(conf_tapetype);
- rst_flags->blocksize = tapetype_get_blocksize(tape) * 1024;
- }
-
- if(rst_flags->fsf && re_config &&
- getconf_boolean(CNF_AMRECOVER_DO_FSF) == 0) {
- rst_flags->fsf = (off_t)0;
- }
-
- if (!use_changer && re_config &&
- getconf_boolean(CNF_AMRECOVER_CHECK_LABEL) == 0) {
- rst_flags->check_labels = 0;
- }
-
- /* establish a distinct data connection for dumpfile data */
- if(am_has_feature(their_features, fe_recover_splits)) {
- if(from_amandad == 1) {
- rst_flags->pipe_to_fd = datafdout;
- }
- else {
- int data_fd;
- char *buf;
-
- dbprintf(_("Client understands split dumpfiles\n"));
-
- if((data_sock = stream_server(AF_INET, &data_port, STREAM_BUFSIZE,
- STREAM_BUFSIZE, 0)) < 0){
- error(_("could not create data socket: %s"), strerror(errno));
- /*NOTREACHED*/
- }
- dbprintf(_("Local port %d set aside for data\n"), data_port);
-
- /* tell client where to connect */
- g_printf(_("CONNECT %hu\n"), (unsigned short)data_port);
- fflush(stdout);
-
- if((data_fd = stream_accept(data_sock, TIMEOUT, STREAM_BUFSIZE,
- STREAM_BUFSIZE)) < 0){
- error(_("stream_accept failed for client data connection: %s\n"),
- strerror(errno));
- /*NOTREACHED*/
- }
-
- buf = get_client_line_fd(data_fd);
-
- check_security_buffer(buf);
- rst_flags->pipe_to_fd = data_fd;
- }
- }
- else {
- rst_flags->pipe_to_fd = fileno(stdout);
- cmdout = stderr;
- }
- dbprintf(_("Sending output to file descriptor %d\n"), rst_flags->pipe_to_fd);
-
-
- tapedev = getconf_str(CNF_TAPEDEV);
- if(get_lock == 0 &&
- re_config &&
- (use_changer || (rst_flags->alt_tapedev && tapedev &&
- strcmp(rst_flags->alt_tapedev, tapedev) == 0) ) ) {
- char *process_name = get_master_process(rst_conf_logfile);
- send_message(cmdout, rst_flags, their_features,
- _("%s exists: %s is already running, "
- "or you must run amcleanup"),
- rst_conf_logfile, process_name);
- error(_("%s exists: %s is already running, "
- "or you must run amcleanup"),
- rst_conf_logfile, process_name);
- }
-
- /* make sure our restore flags aren't crazy */
- if (check_rst_flags(rst_flags) == -1) {
- if (rst_flags->pipe_to_fd != -1)
- aclose(rst_flags->pipe_to_fd);
- send_message(cmdout, rst_flags, their_features,
- _("restore flags are crazy"));
- exit(1);
- }
-
- /* actual restoration */
- search_tapes(cmdout, cmdin, use_changer, tapes, dumpspecs, rst_flags,
- their_features);
- dbprintf(_("Restoration finished\n"));
-
- /* cleanup */
- if(rst_flags->pipe_to_fd != -1) aclose(rst_flags->pipe_to_fd);
- free_tapelist(tapes);
-
- am_release_feature_set(their_features);
-
- amfree(rst_flags->alt_tapedev);
- amfree(rst_flags);
- dumpspec_list_free(dumpspecs);
- amfree(re_config);
- dbclose();
- return 0;
-}
-
-static void
-cleanup(void)
-{
- if (parent_pid == getpid()) {
- if (get_lock) {
- log_add(L_INFO, "pid-done %ld\n", (long)getpid());
- unlink(rst_conf_logfile);
- }
- }
-}
projects / debian / amanda / blobdiff