| 1 | This adds Service Location Protocol support. |
| 2 | |
| 3 | To use this patch, run these commands for a successful build: |
| 4 | |
| 5 | patch -p1 <patches/slp.diff |
| 6 | ./prepare-source |
| 7 | ./configure --enable-slp |
| 8 | make |
| 9 | |
| 10 | TODO: the configure changes should abort if the user requests --enable-slp |
| 11 | and we can't honor that request. |
| 12 | |
| 13 | based-on: a01e3b490eb36ccf9e704840e1b6683dab867550 |
| 14 | diff --git a/Makefile.in b/Makefile.in |
| 15 | --- a/Makefile.in |
| 16 | +++ b/Makefile.in |
| 17 | @@ -13,6 +13,8 @@ CFLAGS=@CFLAGS@ |
| 18 | CPPFLAGS=@CPPFLAGS@ |
| 19 | EXEEXT=@EXEEXT@ |
| 20 | LDFLAGS=@LDFLAGS@ |
| 21 | +LIBSLP=@LIBSLP@ |
| 22 | +SLPOBJ=@SLPOBJ@ |
| 23 | |
| 24 | INSTALLCMD=@INSTALL@ |
| 25 | INSTALLMAN=@INSTALL@ |
| 26 | @@ -38,7 +40,7 @@ OBJS1=flist.o rsync.o generator.o receiver.o cleanup.o sender.o exclude.o \ |
| 27 | OBJS2=options.o io.o compat.o hlink.o token.o uidlist.o socket.o hashtable.o \ |
| 28 | fileio.o batch.o clientname.o chmod.o acls.o xattrs.o |
| 29 | OBJS3=progress.o pipe.o |
| 30 | -DAEMON_OBJ = params.o loadparm.o clientserver.o access.o connection.o authenticate.o |
| 31 | +DAEMON_OBJ = params.o loadparm.o clientserver.o access.o connection.o authenticate.o $(SLPOBJ) |
| 32 | popt_OBJS=popt/findme.o popt/popt.o popt/poptconfig.o \ |
| 33 | popt/popthelp.o popt/poptparse.o |
| 34 | OBJS=$(OBJS1) $(OBJS2) $(OBJS3) $(DAEMON_OBJ) $(LIBOBJ) $(ZLIBOBJ) @BUILD_POPT@ |
| 35 | @@ -74,7 +76,7 @@ install-strip: |
| 36 | $(MAKE) INSTALL_STRIP='-s' install |
| 37 | |
| 38 | rsync$(EXEEXT): $(OBJS) |
| 39 | - $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJS) $(LIBS) |
| 40 | + $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJS) $(LIBS) $(LIBSLP) |
| 41 | |
| 42 | $(OBJS): $(HEADERS) |
| 43 | $(CHECK_OBJS): $(HEADERS) |
| 44 | diff --git a/clientserver.c b/clientserver.c |
| 45 | --- a/clientserver.c |
| 46 | +++ b/clientserver.c |
| 47 | @@ -1159,6 +1159,13 @@ int daemon_main(void) |
| 48 | * address too. In fact, why not just do inet_ntop on the |
| 49 | * local address??? */ |
| 50 | |
| 51 | +#ifdef HAVE_LIBSLP |
| 52 | + if (register_services()) { |
| 53 | + rprintf(FINFO, |
| 54 | + "Couldn't register with service discovery protocol, continuing anyway\n"); |
| 55 | + } |
| 56 | +#endif |
| 57 | + |
| 58 | start_accept_loop(rsync_port, start_daemon); |
| 59 | return -1; |
| 60 | } |
| 61 | diff --git a/configure.in b/configure.in |
| 62 | --- a/configure.in |
| 63 | +++ b/configure.in |
| 64 | @@ -683,6 +683,29 @@ if test $rsync_cv_can_hardlink_special = yes; then |
| 65 | AC_DEFINE(CAN_HARDLINK_SPECIAL, 1, [Define to 1 if link() can hard-link special files.]) |
| 66 | fi |
| 67 | |
| 68 | +AC_ARG_ENABLE(slp, [ --disable-slp turn off SLP support, defaults to on]) |
| 69 | +AC_ARG_WITH(openslp-libs, [ --with-openslp-libs set directory for OpenSLP library], |
| 70 | + LDFLAGS="-L$withval $LDFLAGS" |
| 71 | + DSOFLAGS="-L$withval $DSOFLAGS",) |
| 72 | +AC_ARG_WITH(openslp-includes, [ --with-openslp-includes set directory for OpenSLP includes], |
| 73 | + CFLAGS="-I$withval $CFLAGS" |
| 74 | + CXXFLAGS="-I$withval $CXXFLAGS" |
| 75 | + CPPFLAGS="-I$withval $CPPFLAGS",) |
| 76 | + |
| 77 | +LIBSLP="" |
| 78 | +SLPOBJ="" |
| 79 | + |
| 80 | +if test x$enable_slp != xno; then |
| 81 | + AC_CHECK_HEADER(slp.h, |
| 82 | + AC_CHECK_LIB(slp, SLPOpen, |
| 83 | + AC_DEFINE(HAVE_LIBSLP, 1, [Define to 1 for SLP support]) |
| 84 | + SLPOBJ="srvreg.o srvloc.o" |
| 85 | + LIBSLP="-lslp")) |
| 86 | +fi |
| 87 | + |
| 88 | +AC_SUBST(LIBSLP) |
| 89 | +AC_SUBST(SLPOBJ) |
| 90 | + |
| 91 | AC_CACHE_CHECK([for working socketpair],rsync_cv_HAVE_SOCKETPAIR,[ |
| 92 | AC_TRY_RUN([ |
| 93 | #include <sys/types.h> |
| 94 | diff --git a/loadparm.c b/loadparm.c |
| 95 | --- a/loadparm.c |
| 96 | +++ b/loadparm.c |
| 97 | @@ -98,6 +98,9 @@ typedef struct { |
| 98 | char *socket_options; |
| 99 | |
| 100 | int rsync_port; |
| 101 | +#ifdef HAVE_LIBSLP |
| 102 | + int slp_refresh; |
| 103 | +#endif |
| 104 | } global_vars; |
| 105 | |
| 106 | /* This structure describes a single section. Their order must match the |
| 107 | @@ -312,6 +315,9 @@ static struct parm_struct parm_table[] = |
| 108 | {"motd file", P_STRING, P_GLOBAL,&Vars.g.motd_file, NULL,0}, |
| 109 | {"pid file", P_STRING, P_GLOBAL,&Vars.g.pid_file, NULL,0}, |
| 110 | {"port", P_INTEGER,P_GLOBAL,&Vars.g.rsync_port, NULL,0}, |
| 111 | +#ifdef HAVE_LIBSLP |
| 112 | + {"slp refresh", P_INTEGER,P_GLOBAL,&Vars.g.slp_refresh, NULL,0}, |
| 113 | +#endif |
| 114 | {"socket options", P_STRING, P_GLOBAL,&Vars.g.socket_options, NULL,0}, |
| 115 | |
| 116 | {"auth users", P_STRING, P_LOCAL, &Vars.l.auth_users, NULL,0}, |
| 117 | @@ -443,6 +449,9 @@ FN_GLOBAL_STRING(lp_pid_file, &Vars.g.pid_file) |
| 118 | FN_GLOBAL_STRING(lp_socket_options, &Vars.g.socket_options) |
| 119 | |
| 120 | FN_GLOBAL_INTEGER(lp_rsync_port, &Vars.g.rsync_port) |
| 121 | +#ifdef HAVE_LIBSLP |
| 122 | +FN_GLOBAL_INTEGER(lp_slp_refresh, &Vars.g.slp_refresh) |
| 123 | +#endif |
| 124 | |
| 125 | FN_LOCAL_STRING(lp_auth_users, auth_users) |
| 126 | FN_LOCAL_STRING(lp_charset, charset) |
| 127 | diff --git a/main.c b/main.c |
| 128 | --- a/main.c |
| 129 | +++ b/main.c |
| 130 | @@ -1238,6 +1238,18 @@ static int start_client(int argc, char *argv[]) |
| 131 | |
| 132 | if (!read_batch) { /* for read_batch, NO source is specified */ |
| 133 | char *path = check_for_hostspec(argv[0], &shell_machine, &rsync_port); |
| 134 | + |
| 135 | + if (shell_machine && !shell_machine[0]) { |
| 136 | +#ifdef HAVE_LIBSLP |
| 137 | + /* User entered just rsync:// URI */ |
| 138 | + print_service_list(); |
| 139 | + exit_cleanup(0); |
| 140 | +#else /* No SLP, die here */ |
| 141 | + rprintf(FINFO, "No SLP support, cannot browse\n"); |
| 142 | + exit_cleanup(RERR_SYNTAX); |
| 143 | +#endif |
| 144 | + } |
| 145 | + |
| 146 | if (path) { /* source is remote */ |
| 147 | char *dummy_host; |
| 148 | int dummy_port = 0; |
| 149 | diff --git a/options.c b/options.c |
| 150 | --- a/options.c |
| 151 | +++ b/options.c |
| 152 | @@ -567,6 +567,7 @@ static void print_rsync_version(enum logcode f) |
| 153 | char const *links = "no "; |
| 154 | char const *iconv = "no "; |
| 155 | char const *ipv6 = "no "; |
| 156 | + char const *slp = "no "; |
| 157 | STRUCT_STAT *dumstat; |
| 158 | |
| 159 | #if SUBPROTOCOL_VERSION != 0 |
| 160 | @@ -600,6 +601,9 @@ static void print_rsync_version(enum logcode f) |
| 161 | #ifdef CAN_SET_SYMLINK_TIMES |
| 162 | symtimes = ""; |
| 163 | #endif |
| 164 | +#if HAVE_LIBSLP |
| 165 | + slp = ""; |
| 166 | +#endif |
| 167 | |
| 168 | rprintf(f, "%s version %s protocol version %d%s\n", |
| 169 | RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol); |
| 170 | @@ -613,8 +617,8 @@ static void print_rsync_version(enum logcode f) |
| 171 | (int)(sizeof (int64) * 8)); |
| 172 | rprintf(f, " %ssocketpairs, %shardlinks, %ssymlinks, %sIPv6, batchfiles, %sinplace,\n", |
| 173 | got_socketpair, hardlinks, links, ipv6, have_inplace); |
| 174 | - rprintf(f, " %sappend, %sACLs, %sxattrs, %siconv, %ssymtimes\n", |
| 175 | - have_inplace, acls, xattrs, iconv, symtimes); |
| 176 | + rprintf(f, " %sappend, %sACLs, %sxattrs, %siconv, %ssymtimes, %sSLP\n", |
| 177 | + have_inplace, acls, xattrs, iconv, symtimes, slp); |
| 178 | |
| 179 | #ifdef MAINTAINER_MODE |
| 180 | rprintf(f, "Panic Action: \"%s\"\n", get_panic_action()); |
| 181 | diff --git a/rsync.h b/rsync.h |
| 182 | --- a/rsync.h |
| 183 | +++ b/rsync.h |
| 184 | @@ -199,6 +199,10 @@ |
| 185 | #define SIGNIFICANT_ITEM_FLAGS (~(\ |
| 186 | ITEM_BASIS_TYPE_FOLLOWS | ITEM_XNAME_FOLLOWS | ITEM_LOCAL_CHANGE)) |
| 187 | |
| 188 | +/* this is the minimum we'll use, irrespective of config setting */ |
| 189 | +/* definately don't set to less than about 30 seconds */ |
| 190 | +#define SLP_MIN_TIMEOUT 120 |
| 191 | + |
| 192 | #define CFN_KEEP_DOT_DIRS (1<<0) |
| 193 | #define CFN_KEEP_TRAILING_SLASH (1<<1) |
| 194 | #define CFN_DROP_TRAILING_DOT_DIR (1<<2) |
| 195 | diff --git a/rsync.yo b/rsync.yo |
| 196 | --- a/rsync.yo |
| 197 | +++ b/rsync.yo |
| 198 | @@ -148,7 +148,12 @@ particular rsync daemon by leaving off the module name: |
| 199 | |
| 200 | quote(tt(rsync somehost.mydomain.com::)) |
| 201 | |
| 202 | -See the following section for more details. |
| 203 | +And, if Service Location Protocol is available, the following will list the |
| 204 | +available rsync servers: |
| 205 | + |
| 206 | +quote(tt(rsync rsync://)) |
| 207 | + |
| 208 | +See the following section for even more usage details. |
| 209 | |
| 210 | manpagesection(ADVANCED USAGE) |
| 211 | |
| 212 | diff --git a/rsyncd.conf b/rsyncd.conf |
| 213 | new file mode 100644 |
| 214 | --- /dev/null |
| 215 | +++ b/rsyncd.conf |
| 216 | @@ -0,0 +1,3 @@ |
| 217 | + |
| 218 | +slp refresh = 300 |
| 219 | + |
| 220 | diff --git a/rsyncd.conf.yo b/rsyncd.conf.yo |
| 221 | --- a/rsyncd.conf.yo |
| 222 | +++ b/rsyncd.conf.yo |
| 223 | @@ -120,6 +120,15 @@ details on some of the options you may be able to set. By default no |
| 224 | special socket options are set. These settings can also be specified |
| 225 | via the bf(--sockopts) command-line option. |
| 226 | |
| 227 | +dit(bf(slp refresh)) This parameter is used to determine how long service |
| 228 | +advertisements are valid (measured in seconds), and is only applicable if |
| 229 | +you have Service Location Protocol support compiled in. If this is |
| 230 | +not set or is set to zero, then service advertisements never time out. If |
| 231 | +this is set to less than 120 seconds, then 120 seconds is used. If it is |
| 232 | +set to more than 65535, then 65535 is used (which is a limitation of SLP). |
| 233 | +Using 3600 (one hour) is a good number if you tend to change your |
| 234 | +configuration. |
| 235 | + |
| 236 | enddit() |
| 237 | |
| 238 | manpagesection(MODULE PARAMETERS) |
| 239 | @@ -766,6 +775,7 @@ use chroot = yes |
| 240 | max connections = 4 |
| 241 | syslog facility = local5 |
| 242 | pid file = /var/run/rsyncd.pid |
| 243 | +slp refresh = 3600 |
| 244 | |
| 245 | [ftp] |
| 246 | path = /var/ftp/./pub |
| 247 | diff --git a/socket.c b/socket.c |
| 248 | --- a/socket.c |
| 249 | +++ b/socket.c |
| 250 | @@ -530,6 +530,16 @@ void start_accept_loop(int port, int (*fn)(int, int)) |
| 251 | { |
| 252 | fd_set deffds; |
| 253 | int *sp, maxfd, i; |
| 254 | +#ifdef HAVE_LIBSLP |
| 255 | + time_t next_slp_refresh; |
| 256 | + short slp_timeout = lp_slp_refresh(); |
| 257 | + if (slp_timeout) { |
| 258 | + if (slp_timeout < SLP_MIN_TIMEOUT) |
| 259 | + slp_timeout = SLP_MIN_TIMEOUT; |
| 260 | + /* re-register before slp times out */ |
| 261 | + slp_timeout -= 15; |
| 262 | + } |
| 263 | +#endif |
| 264 | |
| 265 | #ifdef HAVE_SIGACTION |
| 266 | sigact.sa_flags = SA_NOCLDSTOP; |
| 267 | @@ -558,14 +568,25 @@ void start_accept_loop(int port, int (*fn)(int, int)) |
| 268 | maxfd = sp[i]; |
| 269 | } |
| 270 | |
| 271 | +#ifdef HAVE_LIBSLP |
| 272 | + next_slp_refresh = time(NULL) + slp_timeout; |
| 273 | +#endif |
| 274 | + |
| 275 | /* now accept incoming connections - forking a new process |
| 276 | * for each incoming connection */ |
| 277 | while (1) { |
| 278 | fd_set fds; |
| 279 | pid_t pid; |
| 280 | int fd; |
| 281 | + int sel_ret; |
| 282 | struct sockaddr_storage addr; |
| 283 | socklen_t addrlen = sizeof addr; |
| 284 | +#ifdef HAVE_LIBSLP |
| 285 | + struct timeval slp_tv; |
| 286 | + |
| 287 | + slp_tv.tv_sec = 10; |
| 288 | + slp_tv.tv_usec = 0; |
| 289 | +#endif |
| 290 | |
| 291 | /* close log file before the potentially very long select so |
| 292 | * file can be trimmed by another process instead of growing |
| 293 | @@ -578,7 +599,18 @@ void start_accept_loop(int port, int (*fn)(int, int)) |
| 294 | fds = deffds; |
| 295 | #endif |
| 296 | |
| 297 | - if (select(maxfd + 1, &fds, NULL, NULL, NULL) < 1) |
| 298 | +#ifdef HAVE_LIBSLP |
| 299 | + sel_ret = select(maxfd + 1, &fds, NULL, NULL, |
| 300 | + slp_timeout ? &slp_tv : NULL); |
| 301 | + if (sel_ret == 0 && slp_timeout && time(NULL) > next_slp_refresh) { |
| 302 | + rprintf(FINFO, "Service registration expired, refreshing it\n"); |
| 303 | + register_services(); |
| 304 | + next_slp_refresh = time(NULL) + slp_timeout; |
| 305 | + } |
| 306 | +#else |
| 307 | + sel_ret = select(maxfd + 1, &fds, NULL, NULL, NULL); |
| 308 | +#endif |
| 309 | + if (sel_ret < 1) |
| 310 | continue; |
| 311 | |
| 312 | for (i = 0, fd = -1; sp[i] >= 0; i++) { |
| 313 | diff --git a/srvloc.c b/srvloc.c |
| 314 | new file mode 100644 |
| 315 | --- /dev/null |
| 316 | +++ b/srvloc.c |
| 317 | @@ -0,0 +1,103 @@ |
| 318 | +/* -*- c-file-style: "linux"; -*- |
| 319 | + |
| 320 | + Copyright (C) 2002 by Brad Hards <bradh@frogmouth.net> |
| 321 | + |
| 322 | + This program is free software; you can redistribute it and/or modify |
| 323 | + it under the terms of the GNU General Public License as published by |
| 324 | + the Free Software Foundation; either version 2 of the License, or |
| 325 | + (at your option) any later version. |
| 326 | + |
| 327 | + This program is distributed in the hope that it will be useful, |
| 328 | + but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 329 | + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 330 | + GNU General Public License for more details. |
| 331 | + |
| 332 | + You should have received a copy of the GNU General Public License |
| 333 | + along with this program; if not, write to the Free Software |
| 334 | + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 335 | +*/ |
| 336 | + |
| 337 | +/* This file implements the service location functionality */ |
| 338 | +/* Basically, it uses normal Service Location Protocol API */ |
| 339 | + |
| 340 | +/* It is really a cheap hack - just to show how it might work |
| 341 | + in a real application. |
| 342 | +*/ |
| 343 | + |
| 344 | +#include "rsync.h" |
| 345 | + |
| 346 | +#include <slp.h> |
| 347 | +#include <stdio.h> |
| 348 | +#include <string.h> |
| 349 | + |
| 350 | +/* This one just prints out the attributes */ |
| 351 | +static SLPBoolean getAttrCallback(UNUSED(SLPHandle hslp), const char *attrlist, |
| 352 | + SLPError errcode, UNUSED(void *cookie)) |
| 353 | +{ |
| 354 | + char *cleanstr; |
| 355 | + |
| 356 | + if (errcode == SLP_OK) { |
| 357 | + if (!strcmp(attrlist, "(comment=)")) |
| 358 | + rprintf(FINFO, "\t(No description)\n"); |
| 359 | + else { |
| 360 | + cleanstr = strrchr(attrlist, ')') ; |
| 361 | + *cleanstr = ' '; /* remove last ')' */ |
| 362 | + rprintf(FINFO, "\t%s\n", strchr(attrlist, '=') + 1); |
| 363 | + } |
| 364 | + } |
| 365 | + return SLP_FALSE; |
| 366 | +} |
| 367 | + |
| 368 | +static SLPBoolean getSLPSrvURLCallback(UNUSED(SLPHandle hslp), |
| 369 | + const char *srvurl, UNUSED(unsigned short lifetime), |
| 370 | + SLPError errcode, void *cookie) |
| 371 | +{ |
| 372 | + SLPError result; |
| 373 | + SLPHandle attrhslp; |
| 374 | + |
| 375 | + if (errcode == SLP_OK) { |
| 376 | + /* chop service: off the front */ |
| 377 | + rprintf(FINFO, " %s ", (strchr(srvurl, ':') + 1)); |
| 378 | + /* check for any attributes */ |
| 379 | + if (SLPOpen("en", SLP_FALSE,&attrhslp) == SLP_OK) { |
| 380 | + result = SLPFindAttrs(attrhslp, srvurl, |
| 381 | + "", /* return all attributes */ |
| 382 | + "", /* use configured scopes */ |
| 383 | + getAttrCallback, NULL); |
| 384 | + if (result != SLP_OK) { |
| 385 | + rprintf(FERROR, "errorcode: %i\n",result); |
| 386 | + } |
| 387 | + SLPClose(attrhslp); |
| 388 | + } |
| 389 | + *(SLPError*)cookie = SLP_OK; |
| 390 | + } else |
| 391 | + *(SLPError*)cookie = errcode; |
| 392 | + |
| 393 | + /* Return SLP_TRUE because we want to be called again |
| 394 | + * if more services were found. */ |
| 395 | + |
| 396 | + return SLP_TRUE; |
| 397 | +} |
| 398 | + |
| 399 | +int print_service_list(void) |
| 400 | +{ |
| 401 | + SLPError err; |
| 402 | + SLPError callbackerr; |
| 403 | + SLPHandle hslp; |
| 404 | + |
| 405 | + err = SLPOpen("en",SLP_FALSE,&hslp); |
| 406 | + if (err != SLP_OK) { |
| 407 | + rprintf(FERROR, "Error opening slp handle %i\n", err); |
| 408 | + return err; |
| 409 | + } |
| 410 | + |
| 411 | + SLPFindSrvs(hslp, "rsync", |
| 412 | + 0, /* use configured scopes */ |
| 413 | + 0, /* no attr filter */ |
| 414 | + getSLPSrvURLCallback, &callbackerr); |
| 415 | + |
| 416 | + /* Now that we're done using slp, close the slp handle */ |
| 417 | + SLPClose(hslp); |
| 418 | + |
| 419 | + return 0; |
| 420 | +} |
| 421 | diff --git a/srvreg.c b/srvreg.c |
| 422 | new file mode 100644 |
| 423 | --- /dev/null |
| 424 | +++ b/srvreg.c |
| 425 | @@ -0,0 +1,128 @@ |
| 426 | +/* -*- c-file-style: "linux"; -*- |
| 427 | + |
| 428 | + Copyright (C) 2002 by Brad Hards <bradh@frogmouth.net> |
| 429 | + |
| 430 | + This program is free software; you can redistribute it and/or modify |
| 431 | + it under the terms of the GNU General Public License as published by |
| 432 | + the Free Software Foundation; either version 2 of the License, or |
| 433 | + (at your option) any later version. |
| 434 | + |
| 435 | + This program is distributed in the hope that it will be useful, |
| 436 | + but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 437 | + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 438 | + GNU General Public License for more details. |
| 439 | + |
| 440 | + You should have received a copy of the GNU General Public License |
| 441 | + along with this program; if not, write to the Free Software |
| 442 | + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 443 | +*/ |
| 444 | + |
| 445 | +/* This file implements the service registration functionality */ |
| 446 | + |
| 447 | +/* Basically, it uses normal Service Location Protocol API */ |
| 448 | + |
| 449 | +#include "rsync.h" |
| 450 | +#include "slp.h" |
| 451 | +#include "netdb.h" |
| 452 | + |
| 453 | +extern int rsync_port; |
| 454 | + |
| 455 | +static void slp_callback(UNUSED(SLPHandle hslp), SLPError errcode, void *cookie) |
| 456 | +{ |
| 457 | + /* return the error code in the cookie */ |
| 458 | + *(SLPError*)cookie = errcode; |
| 459 | + |
| 460 | + /* You could do something else here like print out |
| 461 | + * the errcode, etc. Remember, as a general rule, |
| 462 | + * do not try to do too much in a callback because |
| 463 | + * it is being executed by the same thread that is |
| 464 | + * reading slp packets from the wire. */ |
| 465 | +} |
| 466 | + |
| 467 | +int register_services(void) |
| 468 | +{ |
| 469 | + SLPError err, callbackerr; |
| 470 | + SLPHandle hslp; |
| 471 | + int n; |
| 472 | + int i; |
| 473 | + char srv[120]; |
| 474 | + char attr[120]; |
| 475 | + char localhost[256]; |
| 476 | + extern char *config_file; |
| 477 | + short timeout; |
| 478 | + struct addrinfo aih, *ai = 0; |
| 479 | + |
| 480 | + if (!lp_load(config_file, 0)) { |
| 481 | + exit_cleanup(RERR_SYNTAX); |
| 482 | + } |
| 483 | + |
| 484 | + n = lp_numservices(); |
| 485 | + |
| 486 | + if (0 == lp_slp_refresh()) |
| 487 | + timeout = SLP_LIFETIME_MAXIMUM; /* don't expire, ever */ |
| 488 | + else if (SLP_MIN_TIMEOUT > lp_slp_refresh()) |
| 489 | + timeout = SLP_MIN_TIMEOUT; /* use a reasonable minimum */ |
| 490 | + else if (SLP_LIFETIME_MAXIMUM <= lp_slp_refresh()) |
| 491 | + timeout = (SLP_LIFETIME_MAXIMUM - 1); /* as long as possible */ |
| 492 | + else |
| 493 | + timeout = lp_slp_refresh(); |
| 494 | + |
| 495 | + rprintf(FINFO, "rsyncd registering %d service%s with slpd for %d seconds:\n", n, ((n==1)? "":"s"), timeout); |
| 496 | + err = SLPOpen("en",SLP_FALSE,&hslp); |
| 497 | + if (err != SLP_OK) { |
| 498 | + rprintf(FINFO, "Error opening slp handle %i\n",err); |
| 499 | + return err; |
| 500 | + } |
| 501 | + if (gethostname(localhost, sizeof localhost)) { |
| 502 | + rprintf(FINFO, "Could not get hostname: %s\n", strerror(errno)); |
| 503 | + return err; |
| 504 | + } |
| 505 | + memset(&aih, 0, sizeof aih); |
| 506 | + aih.ai_family = PF_UNSPEC; |
| 507 | + aih.ai_flags = AI_CANONNAME; |
| 508 | + if (0 != (err = getaddrinfo(localhost, 0, &aih, &ai)) || !ai) { |
| 509 | + rprintf(FINFO, "Could not resolve hostname: %s\n", gai_strerror(err)); |
| 510 | + return err; |
| 511 | + } |
| 512 | + /* Register each service with SLP */ |
| 513 | + for (i = 0; i < n; i++) { |
| 514 | + if (!lp_list(i)) |
| 515 | + continue; |
| 516 | + |
| 517 | + snprintf(srv, sizeof srv, "service:rsync://%s:%d/%s", |
| 518 | + ai->ai_canonname, |
| 519 | + rsync_port, |
| 520 | + lp_name(i)); |
| 521 | + rprintf(FINFO, " %s\n", srv); |
| 522 | + if (lp_comment(i)) { |
| 523 | + snprintf(attr, sizeof attr, "(comment=%s)", |
| 524 | + lp_comment(i)); |
| 525 | + } |
| 526 | + err = SLPReg(hslp, |
| 527 | + srv, /* service to register */ |
| 528 | + timeout, |
| 529 | + 0, /* this is ignored */ |
| 530 | + attr, /* attributes */ |
| 531 | + SLP_TRUE, /* new registration - don't change this */ |
| 532 | + slp_callback, /* callback */ |
| 533 | + &callbackerr); |
| 534 | + |
| 535 | + /* err may contain an error code that occurred as the slp library |
| 536 | + * _prepared_ to make the call. */ |
| 537 | + if (err != SLP_OK || callbackerr != SLP_OK) |
| 538 | + rprintf(FINFO, "Error registering service with slp %i\n", err); |
| 539 | + |
| 540 | + /* callbackerr may contain an error code (that was assigned through |
| 541 | + * the callback cookie) that occurred as slp packets were sent on |
| 542 | + * the wire. */ |
| 543 | + if (callbackerr != SLP_OK) |
| 544 | + rprintf(FINFO, "Error registering service with slp %i\n",callbackerr); |
| 545 | + } |
| 546 | + |
| 547 | + /* Now that we're done using slp, close the slp handle */ |
| 548 | + freeaddrinfo(ai); |
| 549 | + SLPClose(hslp); |
| 550 | + |
| 551 | + /* refresh is done in main select loop */ |
| 552 | + return 0; |
| 553 | +} |