1 /* $NetBSD: postmulti.c,v 1.4 2022/10/08 16:12:48 christos Exp $ */
2
3 /*++
4 /* NAME
5 /* postmulti 1
6 /* SUMMARY
7 /* Postfix multi-instance manager
8 /* SYNOPSIS
9 /* .fi
10 /* .ti -4
11 /* \fBEnabling multi-instance management:\fR
12 /*
13 /* \fBpostmulti\fR \fB-e init\fR [\fB-v\fR]
14 /*
15 /* .ti -4
16 /* \fBIterator mode:\fR
17 /*
18 /* \fBpostmulti\fR \fB-l\fR [\fB-aRv\fR] [\fB-g \fIgroup\fR]
19 /* [\fB-i \fIname\fR]
20 /*
21 /* \fBpostmulti\fR \fB-p\fR [\fB-av\fR] [\fB-g \fIgroup\fR]
22 /* [\fB-i \fIname\fR] \fIpostfix-command...\fR
23 /*
24 /* \fBpostmulti\fR \fB-x\fR [\fB-aRv\fR] [\fB-g \fIgroup\fR]
25 /* [\fB-i \fIname\fR] \fIunix-command...\fR
26 /*
27 /* .ti -4
28 /* \fBLife-cycle management:\fR
29 /*
30 /* \fBpostmulti\fR \fB-e create\fR [\fB-av\fR]
31 /* [\fB-g \fIgroup\fR] [\fB-i \fIname\fR] [\fB-G \fIgroup\fR]
32 /* [\fB-I \fIname\fR] [\fIparam=value\fR ...]
33 /*
34 /* \fBpostmulti\fR \fB-e import\fR [\fB-av\fR]
35 /* [\fB-g \fIgroup\fR] [\fB-i \fIname\fR] [\fB-G \fIgroup\fR]
36 /* [\fB-I \fIname\fR] [\fBconfig_directory=\fI/path\fR]
37 /*
38 /* \fBpostmulti\fR \fB-e destroy\fR [\fB-v\fR] \fB-i \fIname\fR
39 /*
40 /* \fBpostmulti\fR \fB-e deport\fR [\fB-v\fR] \fB-i \fIname\fR
41 /*
42 /* \fBpostmulti\fR \fB-e enable\fR [\fB-v\fR] \fB-i \fIname\fR
43 /*
44 /* \fBpostmulti\fR \fB-e disable\fR [\fB-v\fR] \fB-i \fIname\fR
45 /*
46 /* \fBpostmulti\fR \fB-e assign\fR [\fB-v\fR] \fB-i \fIname\fR
47 /* [\fB-I \fIname\fR] [-G \fIgroup\fR]
48 /* DESCRIPTION
49 /* The \fBpostmulti\fR(1) command allows a Postfix administrator
50 /* to manage multiple Postfix instances on a single host.
51 /*
52 /* \fBpostmulti\fR(1) implements two fundamental modes of
53 /* operation. In \fBiterator\fR mode, it executes the same
54 /* command for multiple Postfix instances. In \fBlife-cycle
55 /* management\fR mode, it adds or deletes one instance, or
56 /* changes the multi-instance status of one instance.
57 /*
58 /* Each mode of operation has its own command syntax. For this
59 /* reason, each mode is documented in separate sections below.
60 /* BACKGROUND
61 /* .ad
62 /* .fi
63 /* A multi-instance configuration consists of one primary
64 /* Postfix instance, and one or more secondary instances whose
65 /* configuration directory pathnames are recorded in the primary
66 /* instance's main.cf file. Postfix instances share program
67 /* files and documentation, but have their own configuration,
68 /* queue and data directories.
69 /*
70 /* Currently, only the default Postfix instance can be used
71 /* as primary instance in a multi-instance configuration. The
72 /* \fBpostmulti\fR(1) command does not currently support a \fB-c\fR
73 /* option to select an alternative primary instance, and exits
74 /* with a fatal error if the \fBMAIL_CONFIG\fR environment
75 /* variable is set to a non-default configuration directory.
76 /*
77 /* See the MULTI_INSTANCE_README tutorial for a more detailed
78 /* discussion of multi-instance management with \fBpostmulti\fR(1).
79 /* ITERATOR MODE
80 /* .ad
81 /* .fi
82 /* In iterator mode, \fBpostmulti\fR performs the same operation
83 /* on all Postfix instances in turn.
84 /*
85 /* If multi-instance support is not enabled, the requested
86 /* command is performed just for the primary instance.
87 /* .PP
88 /* Iterator mode implements the following command options:
89 /* .SH "Instance selection"
90 /* .IP \fB-a\fR
91 /* Perform the operation on all instances. This is the default.
92 /* .IP "\fB-g \fIgroup\fR"
93 /* Perform the operation only for members of the named \fIgroup\fR.
94 /* .IP "\fB-i \fIname\fR"
95 /* Perform the operation only for the instance with the specified
96 /* \fIname\fR. You can specify either the instance name
97 /* or the absolute pathname of the instance's configuration
98 /* directory. Specify "-" to select the primary Postfix instance.
99 /* .IP \fB-R\fR
100 /* Reverse the iteration order. This may be appropriate when
101 /* updating a multi-instance system, where "sink" instances
102 /* are started before "source" instances.
103 /* .sp
104 /* This option cannot be used with \fB-p\fR.
105 /* .SH "List mode"
106 /* .IP \fB-l\fR
107 /* List Postfix instances with their instance name, instance
108 /* group name, enable/disable status and configuration directory.
109 /* .SH "Postfix-wrapper mode"
110 /* .IP "\fB-p \fIpostfix-command\fR"
111 /* Invoke \fBpostfix(1)\fR to execute \fIpostfix-command\fR.
112 /* This option implements the \fBpostfix-wrapper\fR(5) interface.
113 /* .RS
114 /* .IP \(bu
115 /* With "start"-like commands, "postfix check" is executed for
116 /* instances that are not enabled. The full list of commands
117 /* is specified with the postmulti_start_commands parameter.
118 /* .IP \(bu
119 /* With "stop"-like commands, the iteration order is reversed,
120 /* and disabled instances are skipped. The full list of commands
121 /* is specified with the postmulti_stop_commands parameter.
122 /* .IP \(bu
123 /* With "reload" and other commands that require a started
124 /* instance, disabled instances are skipped. The full list of
125 /* commands is specified with the postmulti_control_commands
126 /* parameter.
127 /* .IP \(bu
128 /* With "status" and other commands that don't require a started
129 /* instance, the command is executed for all instances.
130 /* .RE
131 /* .IP
132 /* The \fB-p\fR option can also be used interactively to
133 /* start/stop/etc. a named instance or instance group. For
134 /* example, to start just the instances in the group "msa",
135 /* invoke \fBpostmulti\fR(1) as follows:
136 /* .RS
137 /* .IP
138 /* # postmulti -g msa -p start
139 /* .RE
140 /* .SH "Command mode"
141 /* .IP "\fB-x \fIunix-command\fR"
142 /* Execute the specified \fIunix-command\fR for all Postfix instances.
143 /* The command runs with appropriate environment settings for
144 /* MAIL_CONFIG, command_directory, daemon_directory,
145 /* config_directory, queue_directory, data_directory,
146 /* multi_instance_name, multi_instance_group and
147 /* multi_instance_enable.
148 /* .SH "Other options"
149 /* .IP \fB-v\fR
150 /* Enable verbose logging for debugging purposes. Multiple
151 /* \fB-v\fR options make the software increasingly verbose.
152 /* LIFE-CYCLE MANAGEMENT MODE
153 /* .ad
154 /* .fi
155 /* With the \fB-e\fR option \fBpostmulti\fR(1) can be used to
156 /* add or delete a Postfix instance, and to manage the
157 /* multi-instance status of an existing instance.
158 /* .PP
159 /* The following options are implemented:
160 /* .SH "Existing instance selection"
161 /* .IP \fB-a\fR
162 /* When creating or importing an instance, place the new
163 /* instance at the front of the secondary instance list.
164 /* .IP "\fB-g \fIgroup\fR"
165 /* When creating or importing an instance, place the new
166 /* instance before the first secondary instance that is a
167 /* member of the specified group.
168 /* .IP "\fB-i \fIname\fR"
169 /* When creating or importing an instance, place the new
170 /* instance before the matching secondary instance.
171 /* .sp
172 /* With other life-cycle operations, apply the operation to
173 /* the named existing instance. Specify "-" to select the
174 /* primary Postfix instance.
175 /* .SH "New or existing instance name assignment"
176 /* .IP "\fB-I \fIname\fR"
177 /* Assign the specified instance \fIname\fR to an existing
178 /* instance, newly-created instance, or imported instance.
179 /* Instance
180 /* names other than "-" (which makes the instance "nameless")
181 /* must start with "postfix-". This restriction reduces the
182 /* likelihood of name collisions with system files.
183 /* .IP "\fB-G \fIgroup\fR"
184 /* Assign the specified \fIgroup\fR name to an existing instance
185 /* or to a newly created or imported instance.
186 /* .SH "Instance creation/deletion/status change"
187 /* .IP "\fB-e \fIaction\fR"
188 /* "Edit" managed instances. The following actions are supported:
189 /* .RS
190 /* .IP \fBinit\fR
191 /* This command is required before \fBpostmulti\fR(1) can be
192 /* used to manage Postfix instances. The "postmulti -e init"
193 /* command updates the primary instance's main.cf file by
194 /* setting:
195 /* .RS
196 /* .IP
197 /* .nf
198 /* multi_instance_wrapper =
199 /* ${command_directory}/postmulti -p --
200 /* multi_instance_enable = yes
201 /* .fi
202 /* .RE
203 /* .IP
204 /* You can set these by other means if you prefer.
205 /* .IP \fBcreate\fR
206 /* Create a new Postfix instance and add it to the
207 /* multi_instance_directories parameter of the primary instance.
208 /* The "\fB-I \fIname\fR" option is recommended to give the
209 /* instance a short name that is used to construct default
210 /* values for the private directories of the new instance. The
211 /* "\fB-G \fIgroup\fR" option may be specified to assign the
212 /* instance to a group, otherwise, the new instance is not a
213 /* member of any group.
214 /* .sp
215 /* The new instance main.cf is the stock main.cf with the
216 /* parameters that specify the locations of shared files cloned
217 /* from the primary instance. For "nameless" instances, you
218 /* should manually adjust "syslog_name" to yield a unique
219 /* "logtag" starting with "postfix-" that will uniquely identify
220 /* the instance in the mail logs. It is simpler to assign the
221 /* instance a short name with the "\fB-I \fIname\fR" option.
222 /* .sp
223 /* Optional "name=value" arguments specify the instance
224 /* config_directory, queue_directory and data_directory.
225 /* For example:
226 /* .RS
227 /* .IP
228 /* .nf
229 /* # postmulti -I postfix-mumble \e
230 /* -G mygroup -e create \e
231 /* config_directory=/my/config/dir \e
232 /* queue_directory=/my/queue/dir \e
233 /* data_directory=/my/data/dir
234 /* .fi
235 /* .RE
236 /* .IP
237 /* If any of these pathnames is not supplied, the program
238 /* attempts to generate the missing pathname(s) by taking the
239 /* corresponding primary instance pathname, and replacing the
240 /* last pathname component by the value of the \fB-I\fR option.
241 /* .sp
242 /* If the instance configuration directory already exists, and
243 /* contains both a main.cf and master.cf file, \fBcreate\fR
244 /* will "import" the instance as-is. For existing instances,
245 /* \fBcreate\fR and \fBimport\fR are identical.
246 /* .IP \fBimport\fR
247 /* Import an existing instance into the list of instances
248 /* managed by the \fBpostmulti\fR(1) multi-instance manager.
249 /* This adds the instance to the multi_instance_directories
250 /* list of the primary instance. If the "\fB-I \fIname\fR"
251 /* option is provided it specifies the new name for the instance
252 /* and is used to define a default location for the instance
253 /* configuration directory (as with \fBcreate\fR above). The
254 /* "\fB-G \fIgroup\fR" option may be used to assign the instance
255 /* to a group. Add a "\fBconfig_directory=\fI/path\fR" argument
256 /* to override a default pathname based on "\fB-I \fIname\fR".
257 /* .IP \fBdestroy\fR
258 /* Destroy a secondary Postfix instance. To be a candidate for
259 /* destruction an instance must be disabled, stopped and its
260 /* queue must not contain any messages. Attempts to destroy
261 /* the primary Postfix instance trigger a fatal error, without
262 /* destroying the instance.
263 /* .sp
264 /* The instance is removed from the primary instance main.cf
265 /* file's alternate_config_directories parameter and its data,
266 /* queue and configuration directories are cleaned of files
267 /* and directories created by the Postfix system. The main.cf
268 /* and master.cf files are removed from the configuration
269 /* directory even if they have been modified since initial
270 /* creation. Finally, the instance is "deported" from the list
271 /* of managed instances.
272 /* .sp
273 /* If other files are present in instance private directories,
274 /* the directories may not be fully removed, a warning is
275 /* logged to alert the administrator. It is expected that an
276 /* instance built using "fresh" directories via the \fBcreate\fR
277 /* action will be fully removed by the \fBdestroy\fR action
278 /* (if first disabled). If the instance configuration and queue
279 /* directories are populated with additional files (access and
280 /* rewriting tables, chroot jail content, etc.) the instance
281 /* directories will not be fully removed.
282 /* .sp
283 /* The \fBdestroy\fR action triggers potentially dangerous
284 /* file removal operations. Make sure the instance's data,
285 /* queue and configuration directories are set correctly and
286 /* do not contain any valuable files.
287 /* .IP \fBdeport\fR
288 /* Deport a secondary instance from the list of managed
289 /* instances. This deletes the instance configuration directory
290 /* from the primary instance's multi_instance_directories list,
291 /* but does not remove any files or directories.
292 /* .IP \fBassign\fR
293 /* Assign a new instance name or a new group name to the
294 /* selected instance. Use "\fB-G -\fR" to specify "no group"
295 /* and "\fB-I -\fR" to specify "no name". If you choose to
296 /* make an instance "nameless", set a suitable syslog_name in
297 /* the corresponding main.cf file.
298 /* .IP \fBenable\fR
299 /* Mark the selected instance as enabled. This just sets the
300 /* multi_instance_enable parameter to "yes" in the instance's
301 /* main.cf file.
302 /* .IP \fBdisable\fR
303 /* Mark the selected instance as disabled. This means that
304 /* the instance will not be started etc. with "postfix start",
305 /* "postmulti -p start" and so on. The instance can still be
306 /* started etc. with "postfix -c config-directory start".
307 /* .SH "Other options"
308 /* .IP \fB-v\fR
309 /* Enable verbose logging for debugging purposes. Multiple
310 /* \fB-v\fR options make the software increasingly verbose.
311 /* .RE
312 /* ENVIRONMENT
313 /* .ad
314 /* .fi
315 /* The \fBpostmulti\fR(1) command exports the following environment
316 /* variables before executing the requested \fIcommand\fR for a given
317 /* instance:
318 /* .IP \fBMAIL_VERBOSE\fR
319 /* This is set when the -v command-line option is present.
320 /* .IP \fBMAIL_CONFIG\fR
321 /* The location of the configuration directory of the instance.
322 /* CONFIGURATION PARAMETERS
323 /* .ad
324 /* .fi
325 /* .IP "\fBconfig_directory (see 'postconf -d' output)\fR"
326 /* The default location of the Postfix main.cf and master.cf
327 /* configuration files.
328 /* .IP "\fBdaemon_directory (see 'postconf -d' output)\fR"
329 /* The directory with Postfix support programs and daemon programs.
330 /* .IP "\fBimport_environment (see 'postconf -d' output)\fR"
331 /* The list of environment variables that a privileged Postfix
332 /* process will import from a non-Postfix parent process, or name=value
333 /* environment overrides.
334 /* .IP "\fBmulti_instance_directories (empty)\fR"
335 /* An optional list of non-default Postfix configuration directories;
336 /* these directories belong to additional Postfix instances that share
337 /* the Postfix executable files and documentation with the default
338 /* Postfix instance, and that are started, stopped, etc., together
339 /* with the default Postfix instance.
340 /* .IP "\fBmulti_instance_group (empty)\fR"
341 /* The optional instance group name of this Postfix instance.
342 /* .IP "\fBmulti_instance_name (empty)\fR"
343 /* The optional instance name of this Postfix instance.
344 /* .IP "\fBmulti_instance_enable (no)\fR"
345 /* Allow this Postfix instance to be started, stopped, etc., by a
346 /* multi-instance manager.
347 /* .IP "\fBpostmulti_start_commands (start)\fR"
348 /* The \fBpostfix\fR(1) commands that the \fBpostmulti\fR(1) instance manager treats
349 /* as "start" commands.
350 /* .IP "\fBpostmulti_stop_commands (see 'postconf -d' output)\fR"
351 /* The \fBpostfix\fR(1) commands that the \fBpostmulti\fR(1) instance manager treats
352 /* as "stop" commands.
353 /* .IP "\fBpostmulti_control_commands (reload flush)\fR"
354 /* The \fBpostfix\fR(1) commands that the \fBpostmulti\fR(1) instance manager
355 /* treats as "control" commands, that operate on running instances.
356 /* .IP "\fBsyslog_facility (mail)\fR"
357 /* The syslog facility of Postfix logging.
358 /* .IP "\fBsyslog_name (see 'postconf -d' output)\fR"
359 /* A prefix that is prepended to the process name in syslog
360 /* records, so that, for example, "smtpd" becomes "prefix/smtpd".
361 /* .PP
362 /* Available in Postfix 3.0 and later:
363 /* .IP "\fBmeta_directory (see 'postconf -d' output)\fR"
364 /* The location of non-executable files that are shared among
365 /* multiple Postfix instances, such as postfix-files, dynamicmaps.cf,
366 /* and the multi-instance template files main.cf.proto and master.cf.proto.
367 /* .IP "\fBshlib_directory (see 'postconf -d' output)\fR"
368 /* The location of Postfix dynamically-linked libraries
369 /* (libpostfix-*.so), and the default location of Postfix database
370 /* plugins (postfix-*.so) that have a relative pathname in the
371 /* dynamicmaps.cf file.
372 /* FILES
373 /* $meta_directory/main.cf.proto, stock configuration file
374 /* $meta_directory/master.cf.proto, stock configuration file
375 /* $daemon_directory/postmulti-script, life-cycle helper program
376 /* SEE ALSO
377 /* postfix(1), Postfix control program
378 /* postfix-wrapper(5), Postfix multi-instance API
379 /* README FILES
380 /* .ad
381 /* .fi
382 /* Use "\fBpostconf readme_directory\fR" or "\fBpostconf
383 /* html_directory\fR" to locate this information.
384 /* .nf
385 /* .na
386 /* MULTI_INSTANCE_README, Postfix multi-instance management
387 /* HISTORY
388 /* .ad
389 /* .fi
390 /* The \fBpostmulti\fR(1) command was introduced with Postfix
391 /* version 2.6.
392 /* LICENSE
393 /* .ad
394 /* .fi
395 /* The Secure Mailer license must be distributed with this software.
396 /* AUTHOR(S)
397 /* Victor Duchovni
398 /* Morgan Stanley
399 /*
400 /* Wietse Venema
401 /* IBM T.J. Watson Research
402 /* P.O. Box 704
403 /* Yorktown Heights, NY 10598, USA
404 /*
405 /* Wietse Venema
406 /* Google, Inc.
407 /* 111 8th Avenue
408 /* New York, NY 10011, USA
409 /*--*/
410
411 /* System library. */
412
413 #include <sys_defs.h>
414 #include <sys/stat.h>
415 #include <sys/wait.h>
416 #include <vstream.h>
417 #include <stdlib.h>
418 #include <unistd.h>
419 #include <string.h>
420 #include <fcntl.h>
421 #include <errno.h>
422 #include <ctype.h>
423 #ifdef USE_PATHS_H
424 #include <paths.h>
425 #endif
426 #include <stddef.h>
427
428 /* Utility library. */
429
430 #include <msg.h>
431 #include <msg_vstream.h>
432 #include <vstream.h>
433 #include <vstring_vstream.h>
434 #include <stringops.h>
435 #include <clean_env.h>
436 #include <argv.h>
437 #include <safe.h>
438 #include <mymalloc.h>
439 #include <htable.h>
440 #include <name_code.h>
441 #include <ring.h>
442 #include <warn_stat.h>
443
444 /* Global library. */
445
446 #include <mail_version.h>
447 #include <mail_params.h>
448 #include <mail_conf.h>
449 #include <mail_parm_split.h>
450 #include <maillog_client.h>
451
452 /* Application-specific. */
453
454 /*
455 * Configuration parameters, specific to postmulti(1).
456 */
457 char *var_multi_start_cmds;
458 char *var_multi_stop_cmds;
459 char *var_multi_cntrl_cmds;
460
461 /*
462 * Shared directory pathnames.
463 */
464 typedef struct {
465 const char *param_name;
466 char **param_value;
467 } SHARED_PATH;
468
469 static SHARED_PATH shared_dir_table[] = {
470 VAR_COMMAND_DIR, &var_command_dir,
471 VAR_DAEMON_DIR, &var_daemon_dir,
472 VAR_META_DIR, &var_meta_dir,
473 VAR_SHLIB_DIR, &var_shlib_dir,
474 0,
475 };
476
477 /*
478 * Actions.
479 */
480 #define ITER_CMD_POSTFIX (1<<0) /* postfix(1) iterator mode */
481 #define ITER_CMD_LIST (1<<1) /* listing iterator mode */
482 #define ITER_CMD_GENERIC (1<<2) /* generic command iterator mode */
483
484 #define ITER_CMD_MASK_ALL \
485 (ITER_CMD_POSTFIX | ITER_CMD_LIST | ITER_CMD_GENERIC)
486
487 #define EDIT_CMD_CREATE (1<<4) /* create new instance */
488 #define EDIT_CMD_IMPORT (1<<5) /* import existing instance */
489 #define EDIT_CMD_DESTROY (1<<6) /* destroy instance */
490 #define EDIT_CMD_DEPORT (1<<7) /* export instance */
491 #define EDIT_CMD_ENABLE (1<<8) /* enable start/stop */
492 #define EDIT_CMD_DISABLE (1<<9) /* disable start/stop */
493 #define EDIT_CMD_ASSIGN (1<<10) /* assign name/group */
494 #define EDIT_CMD_INIT (1<<11) /* hook into main.cf */
495
496 #define EDIT_CMD_MASK_ADD (EDIT_CMD_CREATE | EDIT_CMD_IMPORT)
497 #define EDIT_CMD_MASK_DEL (EDIT_CMD_DESTROY | EDIT_CMD_DEPORT)
498 #define EDIT_CMD_MASK_ASSIGN (EDIT_CMD_MASK_ADD | EDIT_CMD_ASSIGN)
499 #define EDIT_CMD_MASK_ENB (EDIT_CMD_ENABLE | EDIT_CMD_DISABLE)
500 #define EDIT_CMD_MASK_ALL \
501 (EDIT_CMD_MASK_ASSIGN | EDIT_CMD_MASK_DEL | EDIT_CMD_MASK_ENB | \
502 EDIT_CMD_INIT)
503
504 /*
505 * Edit command to number mapping, and vice versa.
506 */
507 static NAME_CODE edit_command_table[] = {
508 "create", EDIT_CMD_CREATE,
509 "import", EDIT_CMD_IMPORT,
510 "destroy", EDIT_CMD_DESTROY,
511 "deport", EDIT_CMD_DEPORT,
512 "enable", EDIT_CMD_ENABLE,
513 "disable", EDIT_CMD_DISABLE,
514 "assign", EDIT_CMD_ASSIGN,
515 "init", EDIT_CMD_INIT,
516 0, -1,
517 };
518
519 #define EDIT_CMD_CODE(str) \
520 name_code(edit_command_table, NAME_CODE_FLAG_STRICT_CASE, (str))
521 #define EDIT_CMD_STR(code) str_name_code(edit_command_table, (code))
522
523 /*
524 * Mandatory prefix for non-empty instance names.
525 */
526 #ifndef NAME_PREFIX
527 #define NAME_PREFIX "postfix-"
528 #endif
529 #define HAS_NAME_PREFIX(name) \
530 (strncmp((name), NAME_PREFIX, sizeof(NAME_PREFIX)-1) == 0)
531 #define NEED_NAME_PREFIX(name) \
532 ((name) != 0 && strcmp((name), "-") != 0 && !HAS_NAME_PREFIX(name))
533 #define NAME_SUFFIX(name) ((name) + sizeof(NAME_PREFIX) - 1)
534
535 /*
536 * In-core instance structure. Only private information is kept here.
537 */
538 typedef struct instance {
539 RING ring; /* linkage. */
540 char *config_dir; /* private */
541 char *queue_dir; /* private */
542 char *data_dir; /* private */
543 char *name; /* null or name */
544 char *gname; /* null or group */
545 int enabled; /* start/stop enable */
546 int primary; /* special */
547 } INSTANCE;
548
549 /*
550 * Managed instance list (edit mode and iterator mode).
551 */
552 static RING instance_hd[1]; /* instance list head */
553
554 #define RING_TO_INSTANCE(ring_ptr) RING_TO_APPL(ring_ptr, INSTANCE, ring)
555 #define RING_PTR_OF(x) (&((x)->ring))
556
557 #define FOREACH_INSTANCE(entry) \
558 for ((entry) = instance_hd; \
559 ((entry) = ring_succ(entry)) != instance_hd;)
560
561 #define FOREACH_SECONDARY_INSTANCE(entry) \
562 for ((entry) = ring_succ(instance_hd); \
563 ((entry) = ring_succ(entry)) != instance_hd;)
564
565 #define NEXT_ITERATOR_INSTANCE(flags, entry) \
566 (((flags) & ITER_FLAG_REVERSE) ? ring_pred(entry) : ring_succ(entry))
567
568 #define FOREACH_ITERATOR_INSTANCE(flags, entry) \
569 for ((entry) = instance_hd; \
570 ((entry) = NEXT_ITERATOR_INSTANCE(flags, (entry))) != instance_hd;)
571
572 /*
573 * Instance selection. One can either select all instances, select by
574 * instance name, or select by instance group.
575 */
576 typedef struct {
577 int type; /* see below */
578 char *name; /* undefined or name */
579 } INST_SELECTION;
580
581 #define INST_SEL_NONE 0 /* default: no selection */
582 #define INST_SEL_ALL 1 /* select all instances */
583 #define INST_SEL_NAME 2 /* select instance name */
584 #define INST_SEL_GROUP 3 /* select instance group */
585
586 /*
587 * Instance name assignment. Each instance may be assigned an instance name
588 * (this must be globally unique within a multi-instance cluster) or an
589 * instance group name (this is intended to be shared). Externally, empty
590 * names may be represented as "-". Internally, we use "" only, to simplify
591 * the code.
592 */
593 typedef struct {
594 char *name; /* null or assigned instance name */
595 char *gname; /* null or assigned group name */
596 } NAME_ASSIGNMENT;
597
598 /*
599 * Iterator controls for non-edit commands. One can reverse the iteration
600 * order, or give special treatment to disabled instances.
601 */
602 #define ITER_FLAG_DEFAULT 0 /* default setting */
603 #define ITER_FLAG_REVERSE (1<<0) /* reverse iteration order */
604 #define ITER_FLAG_CHECK_DISABLED (1<<1) /* check disabled instances */
605 #define ITER_FLAG_SKIP_DISABLED (1<<2) /* skip disabled instances */
606
607 /*
608 * Environment export controls for edit commands. postmulti(1) exports only
609 * things that need to be updated.
610 */
611 #define EXP_FLAG_MULTI_DIRS (1<<0) /* export multi_instance_directories */
612 #define EXP_FLAG_MULTI_NAME (1<<1) /* export multi_instance_name */
613 #define EXP_FLAG_MULTI_GROUP (1<<2) /* export multi_instance_group */
614
615 /*
616 * To detect conflicts, each instance name and each shared or private
617 * pathname is registered in one place, with its owner. Everyone must
618 * register their claims when they join, and will be rejected in case of
619 * conflict.
620 *
621 * Each claim value involves a parameter value (either a directory name or an
622 * instance name). Each claim owner is the config_directory pathname plus
623 * the parameter name.
624 *
625 * XXX: No multi.cf lock file, so this is not race-free.
626 */
627 static HTABLE *claim_table;
628
629 #define IS_CLAIMED_BY(name) \
630 (claim_table ? htable_find(claim_table, (name)) : 0)
631
632 /*
633 * Forward references.
634 */
635 static int iterate_command(int, int, char **, INST_SELECTION *);
636 static int match_instance_selection(INSTANCE *, INST_SELECTION *);
637
638 /*
639 * Convenience.
640 */
641 #define INSTANCE_NAME(i) ((i)->name ? (i)->name : (i)->config_dir)
642 #define STR(buf) vstring_str(buf)
643
644 /* register_claim - register claim or bust */
645
register_claim(const char * instance_path,const char * param_name,const char * param_value)646 static void register_claim(const char *instance_path, const char *param_name,
647 const char *param_value)
648 {
649 const char *myname = "register_claim";
650 char *requestor;
651 const char *owner;
652
653 /*
654 * Sanity checks.
655 */
656 if (instance_path == 0 || *instance_path == 0)
657 msg_panic("%s: no or empty instance pathname", myname);
658 if (param_name == 0 || *param_name == 0)
659 msg_panic("%s: no or empty parameter name", myname);
660 if (param_value == 0)
661 msg_panic("%s: no parameter value", myname);
662
663 /*
664 * Make a claim or report a conflict.
665 */
666 if (claim_table == 0)
667 claim_table = htable_create(100);
668 requestor = concatenate(instance_path, ", ", param_name, (char *) 0);
669 if ((owner = htable_find(claim_table, param_value)) == 0) {
670 (void) htable_enter(claim_table, param_value, requestor);
671 } else if (strcmp(owner, requestor) == 0) {
672 myfree(requestor);
673 } else {
674 msg_fatal("instance %s, %s=%s conflicts with instance %s=%s",
675 instance_path, param_name, param_value, owner, param_value);
676 }
677 }
678
679 /* claim_instance_attributes - claim multiple private instance attributes */
680
claim_instance_attributes(INSTANCE * ip)681 static void claim_instance_attributes(INSTANCE *ip)
682 {
683
684 /*
685 * Detect instance name or pathname conflicts between this instance and
686 * other instances. XXX: No multi.cf lock file, so this is not race-free.
687 */
688 if (ip->name)
689 register_claim(ip->config_dir, VAR_MULTI_NAME, ip->name);
690 register_claim(ip->config_dir, VAR_CONFIG_DIR, ip->config_dir);
691 register_claim(ip->config_dir, VAR_QUEUE_DIR, ip->queue_dir);
692 register_claim(ip->config_dir, VAR_DATA_DIR, ip->data_dir);
693 }
694
695 /* alloc_instance - allocate a single instance object */
696
alloc_instance(const char * config_dir)697 static INSTANCE *alloc_instance(const char *config_dir)
698 {
699 INSTANCE *ip = (INSTANCE *) mymalloc(sizeof(INSTANCE));
700
701 ring_init(RING_PTR_OF(ip));
702 ip->config_dir = config_dir ? mystrdup(config_dir) : 0;
703 ip->queue_dir = 0;
704 ip->data_dir = 0;
705 ip->name = 0;
706 ip->gname = 0;
707 ip->enabled = 0;
708 ip->primary = 0;
709
710 return (ip);
711 }
712
713 #if 0
714
715 /* free_instance - free a single instance object */
716
717 static void free_instance(INSTANCE *ip)
718 {
719
720 /*
721 * If we continue after secondary main.cf file read error, we must be
722 * prepared for the case that some parameters may be missing.
723 */
724 if (ip->name)
725 myfree(ip->name);
726 if (ip->gname)
727 myfree(ip->gname);
728 if (ip->config_dir)
729 myfree(ip->config_dir);
730 if (ip->queue_dir)
731 myfree(ip->queue_dir);
732 if (ip->data_dir)
733 myfree(ip->data_dir);
734 myfree((void *) ip);
735 }
736
737 #endif
738
739 /* insert_instance - insert instance before selected location, claim names */
740
insert_instance(INSTANCE * ip,INST_SELECTION * selection)741 static void insert_instance(INSTANCE *ip, INST_SELECTION *selection)
742 {
743 RING *old;
744
745 #define append_instance(ip) insert_instance((ip), (INST_SELECTION *) 0)
746
747 /*
748 * Insert instance before the selected site.
749 */
750 claim_instance_attributes(ip);
751 if (ring_succ(instance_hd) == 0)
752 ring_init(instance_hd);
753 if (selection && selection->type != INST_SEL_NONE) {
754 FOREACH_SECONDARY_INSTANCE(old) {
755 if (match_instance_selection(RING_TO_INSTANCE(old), selection)) {
756 ring_prepend(old, RING_PTR_OF(ip));
757 return;
758 }
759 }
760 if (selection->type != INST_SEL_ALL)
761 msg_fatal("No matching secondary instances");
762 }
763 ring_prepend(instance_hd, RING_PTR_OF(ip));
764 }
765
766 /* create_primary_instance - synthetic entry for primary instance */
767
create_primary_instance(void)768 static INSTANCE *create_primary_instance(void)
769 {
770 INSTANCE *ip = alloc_instance(var_config_dir);
771
772 /*
773 * There is no need to load primary instance parameter settings from
774 * file. We already have the main.cf parameters of interest in memory.
775 */
776 #define SAVE_INSTANCE_NAME(val) (*(val) ? mystrdup(val) : 0)
777
778 ip->name = SAVE_INSTANCE_NAME(var_multi_name);
779 ip->gname = SAVE_INSTANCE_NAME(var_multi_group);
780 ip->enabled = var_multi_enable;
781 ip->queue_dir = mystrdup(var_queue_dir);
782 ip->data_dir = mystrdup(var_data_dir);
783 ip->primary = 1;
784 return (ip);
785 }
786
787 /* load_instance - read instance parameters from config_dir/main.cf */
788
load_instance(INSTANCE * ip)789 static INSTANCE *load_instance(INSTANCE *ip)
790 {
791 VSTREAM *pipe;
792 VSTRING *buf;
793 char *name;
794 char *value;
795 ARGV *cmd;
796 int count = 0;
797 static NAME_CODE bool_code[] = {
798 CONFIG_BOOL_YES, 1,
799 CONFIG_BOOL_NO, 0,
800 0, -1,
801 };
802
803 /*
804 * Expand parameter values in the context of the target main.cf file.
805 */
806 #define REQUEST_PARAM_COUNT 5 /* # of requested parameters */
807
808 cmd = argv_alloc(REQUEST_PARAM_COUNT + 3);
809 name = concatenate(var_command_dir, "/", "postconf", (char *) 0);
810 argv_add(cmd, name, "-xc", ip->config_dir,
811 VAR_QUEUE_DIR, VAR_DATA_DIR,
812 VAR_MULTI_NAME, VAR_MULTI_GROUP, VAR_MULTI_ENABLE,
813 (char *) 0);
814 myfree(name);
815 pipe = vstream_popen(O_RDONLY, CA_VSTREAM_POPEN_ARGV(cmd->argv),
816 CA_VSTREAM_POPEN_END);
817 argv_free(cmd);
818 if (pipe == 0)
819 msg_fatal("Cannot parse %s/main.cf file: %m", ip->config_dir);
820
821 /*
822 * Read parameter settings from postconf. See also comments below on
823 * whether we should continue or skip groups after error instead of
824 * bailing out immediately.
825 */
826 buf = vstring_alloc(100);
827 while (vstring_get_nonl(buf, pipe) != VSTREAM_EOF) {
828 if (split_nameval(STR(buf), &name, &value))
829 msg_fatal("Invalid %s/main.cf parameter: %s",
830 ip->config_dir, STR(buf));
831 if (strcmp(name, VAR_QUEUE_DIR) == 0 && ++count)
832 ip->queue_dir = mystrdup(value);
833 else if (strcmp(name, VAR_DATA_DIR) == 0 && ++count)
834 ip->data_dir = mystrdup(value);
835 else if (strcmp(name, VAR_MULTI_NAME) == 0 && ++count)
836 ip->name = SAVE_INSTANCE_NAME(value);
837 else if (strcmp(name, VAR_MULTI_GROUP) == 0 && ++count)
838 ip->gname = SAVE_INSTANCE_NAME(value);
839 else if (strcmp(name, VAR_MULTI_ENABLE) == 0 && ++count) {
840 /* mail_conf_bool(3) is case insensitive! */
841 ip->enabled = name_code(bool_code, NAME_CODE_FLAG_NONE, value);
842 if (ip->enabled < 0)
843 msg_fatal("Unexpected %s/main.cf entry: %s = %s",
844 ip->config_dir, VAR_MULTI_ENABLE, value);
845 }
846 }
847 vstring_free(buf);
848
849 /*
850 * XXX We should not bail out while reading a bad secondary main.cf file.
851 * When we manage dozens or more instances, the likelihood increases that
852 * some file will be damaged or missing after a system crash. That is not
853 * a good reason to prevent undamaged Postfix instances from starting.
854 */
855 if (count != REQUEST_PARAM_COUNT)
856 msg_fatal("Failed to obtain all required %s/main.cf parameters",
857 ip->config_dir);
858
859 if (vstream_pclose(pipe))
860 msg_fatal("Cannot parse %s/main.cf file", ip->config_dir);
861 return (ip);
862 }
863
864 /* load_all_instances - compute list of Postfix instances */
865
load_all_instances(void)866 static void load_all_instances(void)
867 {
868 INSTANCE *primary_instance;
869 char **cpp;
870 ARGV *secondary_names;
871
872 /*
873 * Avoid unexpected behavior when $multi_instance_directories contains
874 * only comma characters. Count the actual number of elements, before we
875 * decide that the list is empty.
876 */
877 secondary_names = argv_split(var_multi_conf_dirs, CHARS_COMMA_SP);
878
879 /*
880 * First, the primary instance. This is synthesized out of thin air.
881 */
882 primary_instance = create_primary_instance();
883 if (secondary_names->argc == 0)
884 primary_instance->enabled = 1; /* Single-instance mode */
885 append_instance(primary_instance);
886
887 /*
888 * Next, instances defined in $multi_instance_directories. Note:
889 * load_instance() has side effects on the global config dictionary, but
890 * this does not affect the values that have already been extracted into
891 * C variables.
892 */
893 for (cpp = secondary_names->argv; *cpp != 0; cpp++)
894 append_instance(load_instance(alloc_instance(*cpp)));
895
896 argv_free(secondary_names);
897 }
898
899 /* match_instance_selection - match all/name/group constraints */
900
match_instance_selection(INSTANCE * ip,INST_SELECTION * selection)901 static int match_instance_selection(INSTANCE *ip, INST_SELECTION *selection)
902 {
903 char *iname;
904 char *name;
905
906 /*
907 * When selecting (rather than assigning names) an instance, we match by
908 * the instance name, config_directory path, or the instance name suffix
909 * (name without mandatory prefix). Selecting "-" selects the primary
910 * instance.
911 */
912 switch (selection->type) {
913 case INST_SEL_NONE:
914 return (0);
915 case INST_SEL_ALL:
916 return (1);
917 case INST_SEL_GROUP:
918 return (ip->gname != 0 && strcmp(selection->name, ip->gname) == 0);
919 case INST_SEL_NAME:
920 name = selection->name;
921 if (*name == '/' || ip->name == 0)
922 iname = ip->config_dir;
923 else if (!HAS_NAME_PREFIX(name) && HAS_NAME_PREFIX(ip->name))
924 iname = NAME_SUFFIX(ip->name);
925 else
926 iname = ip->name;
927 return (strcmp(name, iname) == 0
928 || (ip->primary && strcmp(name, "-") == 0));
929 default:
930 msg_panic("match_instance_selection: unknown selection type: %d",
931 selection->type);
932 }
933 }
934
935 /* check_setenv - setenv() with extreme prejudice */
936
check_setenv(const char * name,const char * value)937 static void check_setenv(const char *name, const char *value)
938 {
939 #define CLOBBER 1
940 if (setenv(name, value, CLOBBER) < 0)
941 msg_fatal("setenv: %m");
942 }
943
944 /* prepend_command_path - prepend command_directory to PATH */
945
prepend_command_path(void)946 static void prepend_command_path(void)
947 {
948 char *cmd_path;
949
950 /*
951 * Carefully prepend "$command_directory:" to PATH. We can free the
952 * buffer after check_setenv(), since the value is copied there.
953 */
954 cmd_path = safe_getenv("PATH");
955 cmd_path = concatenate(var_command_dir, ":", (cmd_path && *cmd_path) ?
956 cmd_path : ROOT_PATH, (char *) 0);
957 check_setenv("PATH", cmd_path);
958 myfree(cmd_path);
959 }
960
961 /* check_shared_dir_status - check and claim shared directories */
962
check_shared_dir_status(void)963 static void check_shared_dir_status(void)
964 {
965 struct stat st;
966 const SHARED_PATH *sp;
967
968 /*
969 * XXX Avoid false conflicts with meta_directory. This usually overlaps
970 * with other directories, typically config_directory, shlib_directory or
971 * daemon_directory.
972 */
973 for (sp = shared_dir_table; sp->param_name; ++sp) {
974 if (sp->param_value[0][0] != '/') /* "no" or other special */
975 continue;
976 if (stat(sp->param_value[0], &st) < 0)
977 msg_fatal("%s = '%s': directory not found: %m",
978 sp->param_name, sp->param_value[0]);
979 if (!S_ISDIR(st.st_mode))
980 msg_fatal("%s = '%s' is not a directory",
981 sp->param_name, sp->param_value[0]);
982 if (strcmp(sp->param_name, VAR_META_DIR) == 0)
983 continue;
984 register_claim(var_config_dir, sp->param_name, sp->param_value[0]);
985 }
986 }
987
988 /* check_safe_name - allow instance or group name with only "safe" characters */
989
check_safe_name(const char * s)990 static int check_safe_name(const char *s)
991 {
992 #define SAFE_PUNCT "!@%-_=+:./"
993 if (*s == 0)
994 return (0);
995 for (; *s; ++s) {
996 if (!ISALNUM(*s) && !strchr(SAFE_PUNCT, *s))
997 return (0);
998 }
999 return (1);
1000 }
1001
1002 /* check_name_assignments - Check validity of assigned instance or group name */
1003
check_name_assignments(NAME_ASSIGNMENT * assignment)1004 static void check_name_assignments(NAME_ASSIGNMENT *assignment)
1005 {
1006
1007 /*
1008 * Syntax check the assigned instance name. This name is also used to
1009 * generate directory pathnames, so we must not allow "/" characters.
1010 *
1011 * The value "" will clear the name and is always valid. The command-line
1012 * parser has already converted "-" into "", to simplify implementation.
1013 */
1014 if (assignment->name && *assignment->name) {
1015 if (!check_safe_name(assignment->name))
1016 msg_fatal("Unsafe characters in new instance name: '%s'",
1017 assignment->name);
1018 if (strchr(assignment->name, '/'))
1019 msg_fatal("Illegal '/' character in new instance name: '%s'",
1020 assignment->name);
1021 if (NEED_NAME_PREFIX(assignment->name))
1022 msg_fatal("New instance name must start with '%s'",
1023 NAME_PREFIX);
1024 }
1025
1026 /*
1027 * Syntax check the assigned group name.
1028 */
1029 if (assignment->gname && *assignment->gname) {
1030 if (!check_safe_name(assignment->gname))
1031 msg_fatal("Unsafe characters in '-G %s'", assignment->gname);
1032 }
1033 }
1034
1035 /* do_name_assignments - assign instance/group names */
1036
do_name_assignments(INSTANCE * target,NAME_ASSIGNMENT * assignment)1037 static int do_name_assignments(INSTANCE *target, NAME_ASSIGNMENT *assignment)
1038 {
1039 int export_flags = 0;
1040
1041 /*
1042 * The command-line parser has already converted "-" into "", to simplify
1043 * implementation.
1044 */
1045 if (assignment->name
1046 && strcmp(assignment->name, target->name ? target->name : "")) {
1047 register_claim(target->config_dir, VAR_MULTI_NAME, assignment->name);
1048 if (target->name)
1049 myfree(target->name);
1050 target->name = SAVE_INSTANCE_NAME(assignment->name);
1051 export_flags |= EXP_FLAG_MULTI_NAME;
1052 }
1053 if (assignment->gname
1054 && strcmp(assignment->gname, target->gname ? target->gname : "")) {
1055 if (target->gname)
1056 myfree(target->gname);
1057 target->gname = SAVE_INSTANCE_NAME(assignment->gname);
1058 export_flags |= EXP_FLAG_MULTI_GROUP;
1059 }
1060 return (export_flags);
1061 }
1062
1063 /* make_private_path - generate secondary pathname using primary as template */
1064
make_private_path(const char * param_name,const char * primary_value,NAME_ASSIGNMENT * assignment)1065 static char *make_private_path(const char *param_name,
1066 const char *primary_value,
1067 NAME_ASSIGNMENT *assignment)
1068 {
1069 char *path;
1070 char *base;
1071 char *end;
1072
1073 /*
1074 * The command-line parser has already converted "-" into "", to simplify
1075 * implementation.
1076 */
1077 if (assignment->name == 0 || *assignment->name == 0)
1078 msg_fatal("Missing %s parameter value", param_name);
1079
1080 if (*primary_value != '/')
1081 msg_fatal("Invalid default %s parameter value: '%s': "
1082 "specify an absolute pathname",
1083 param_name, primary_value);
1084
1085 base = mystrdup(primary_value);
1086 if ((end = strrchr(base, '/')) != 0) {
1087 /* Drop trailing slashes */
1088 if (end[1] == '\0') {
1089 while (--end > base && *end == '/')
1090 *end = '\0';
1091 end = strrchr(base, '/');
1092 }
1093 /* Drop last path component */
1094 while (end > base && *end == '/')
1095 *end-- = '\0';
1096 }
1097 path = concatenate(base[1] ? base : "", "/",
1098 assignment->name, (char *) 0);
1099 myfree(base);
1100 return (path);
1101 }
1102
1103 /* assign_new_parameter - assign new instance private name=value */
1104
assign_new_parameter(INSTANCE * new,int edit_cmd,const char * arg)1105 static void assign_new_parameter(INSTANCE *new, int edit_cmd,
1106 const char *arg)
1107 {
1108 char *saved_arg;
1109 char *name;
1110 char *value;
1111 char *end;
1112 char **target = 0;
1113
1114 /*
1115 * With "import", only config_directory is specified on the command line
1116 * (either explicitly as config_directory=/path/name, or implicitly as
1117 * instance name). The other private directory pathnames are taken from
1118 * the existing instance's main.cf file.
1119 *
1120 * With "create", all private pathname parameters are specified on the
1121 * command line, or generated from an instance name.
1122 */
1123 saved_arg = mystrdup(arg);
1124 if (split_nameval(saved_arg, &name, &value))
1125 msg_fatal("Malformed parameter setting '%s'", arg);
1126
1127 if (strcmp(VAR_CONFIG_DIR, name) == 0) {
1128 target = &new->config_dir;
1129 } else if (edit_cmd != EDIT_CMD_IMPORT) {
1130 if (strcmp(VAR_QUEUE_DIR, name) == 0) {
1131 target = &new->queue_dir;
1132 } else if (strcmp(VAR_DATA_DIR, name) == 0) {
1133 target = &new->data_dir;
1134 }
1135 }
1136 if (target == 0)
1137 msg_fatal("Parameter '%s' not valid with action %s",
1138 name, EDIT_CMD_STR(edit_cmd));
1139
1140 /*
1141 * Extract and assign the parameter value. We do a limited number of
1142 * checks here. Conflicts between instances are checked by the caller.
1143 * More checks may be implemented in the helper script if inspired.
1144 */
1145 if (*value != '/')
1146 msg_fatal("Parameter setting '%s' is not an absolute path", name);
1147
1148 /* Tolerate+trim trailing "/" from readline completion */
1149 for (end = value + strlen(value) - 1; end > value && *end == '/'; --end)
1150 *end = 0;
1151
1152 /* No checks here for "/." or other shoot-foot silliness. */
1153 if (end == value)
1154 msg_fatal("Parameter setting '%s' is the root directory", name);
1155
1156 if (*target)
1157 myfree(*target);
1158 *target = mystrdup(value);
1159
1160 /*
1161 * Cleanup.
1162 */
1163 myfree(saved_arg);
1164 }
1165
1166 /* assign_new_parameters - initialize new instance private parameters */
1167
assign_new_parameters(INSTANCE * new,int edit_cmd,char ** argv,NAME_ASSIGNMENT * assignment)1168 static void assign_new_parameters(INSTANCE *new, int edit_cmd,
1169 char **argv, NAME_ASSIGNMENT *assignment)
1170 {
1171 const char *owner;
1172
1173 /*
1174 * Sanity check the explicit parameter settings. More stringent checks
1175 * may take place in the helper script.
1176 */
1177 while (*argv)
1178 assign_new_parameter(new, edit_cmd, *argv++);
1179
1180 /*
1181 * Initialize any missing private directory pathnames, using the primary
1182 * configuration directory parameter values as a template, and using the
1183 * assigned instance name to fill in the blanks.
1184 *
1185 * When importing an existing instance, load private directory pathnames
1186 * from its main.cf file.
1187 */
1188 if (new->config_dir == 0)
1189 new->config_dir =
1190 make_private_path(VAR_CONFIG_DIR, var_config_dir, assignment);
1191 /* Needed for better-quality error message. */
1192 if ((owner = IS_CLAIMED_BY(new->config_dir)) != 0)
1193 msg_fatal("new %s=%s is already in use by instance %s=%s",
1194 VAR_CONFIG_DIR, new->config_dir, owner, new->config_dir);
1195 if (edit_cmd != EDIT_CMD_IMPORT) {
1196 if (new->queue_dir == 0)
1197 new->queue_dir =
1198 make_private_path(VAR_QUEUE_DIR, var_queue_dir, assignment);
1199 if (new->data_dir == 0)
1200 new->data_dir =
1201 make_private_path(VAR_DATA_DIR, var_data_dir, assignment);
1202 } else {
1203 load_instance(new);
1204 }
1205 }
1206
1207 /* export_helper_environment - update environment settings for helper command */
1208
export_helper_environment(INSTANCE * target,int export_flags)1209 static void export_helper_environment(INSTANCE *target, int export_flags)
1210 {
1211 ARGV *import_env;
1212 VSTRING *multi_dirs;
1213 const SHARED_PATH *sp;
1214 RING *entry;
1215
1216 /*
1217 * Environment import filter, to enforce consistent behavior whether this
1218 * command is started by hand, or at system boot time. This is necessary
1219 * because some shell scripts use environment settings to override
1220 * main.cf settings.
1221 */
1222 import_env = mail_parm_split(VAR_IMPORT_ENVIRON, var_import_environ);
1223 clean_env(import_env->argv);
1224 argv_free(import_env);
1225
1226 /*
1227 * Prepend $command_directory: to PATH. This supposedly ensures that
1228 * naive programs will execute commands from the right Postfix version.
1229 */
1230 prepend_command_path();
1231
1232 /*
1233 * The following ensures that Postfix's own programs will target the
1234 * primary instance.
1235 */
1236 check_setenv(CONF_ENV_PATH, var_config_dir);
1237
1238 /*
1239 * Export the parameter settings that are shared between instances.
1240 */
1241 for (sp = shared_dir_table; sp->param_name; ++sp)
1242 check_setenv(sp->param_name, sp->param_value[0]);
1243
1244 /*
1245 * Export the target instance's private directory locations.
1246 */
1247 check_setenv(VAR_CONFIG_DIR, target->config_dir);
1248 check_setenv(VAR_QUEUE_DIR, target->queue_dir);
1249 check_setenv(VAR_DATA_DIR, target->data_dir);
1250
1251 /*
1252 * With operations that add or delete a secondary instance, we export the
1253 * modified multi_instance_directories parameter value for the primary
1254 * Postfix instance.
1255 */
1256 if (export_flags & EXP_FLAG_MULTI_DIRS) {
1257 multi_dirs = vstring_alloc(100);
1258 FOREACH_SECONDARY_INSTANCE(entry) {
1259 if (VSTRING_LEN(multi_dirs) > 0)
1260 VSTRING_ADDCH(multi_dirs, ' ');
1261 vstring_strcat(multi_dirs, RING_TO_INSTANCE(entry)->config_dir);
1262 }
1263 check_setenv(VAR_MULTI_CONF_DIRS, STR(multi_dirs));
1264 vstring_free(multi_dirs);
1265 }
1266
1267 /*
1268 * Export updates for the instance name and group. Empty value (or no
1269 * export) means don't update, "-" means clear.
1270 */
1271 if (export_flags & EXP_FLAG_MULTI_NAME)
1272 check_setenv(VAR_MULTI_NAME, target->name && *target->name ?
1273 target->name : "-");
1274
1275 if (export_flags & EXP_FLAG_MULTI_GROUP)
1276 check_setenv(VAR_MULTI_GROUP, target->gname && *target->gname ?
1277 target->gname : "-");
1278
1279 /*
1280 * If we would implement enable/disable commands by exporting the updated
1281 * parameter value, then we could skip commands that have no effect, just
1282 * like we can skip "assign" commands that make no change.
1283 */
1284 }
1285
1286 /* install_new_instance - install and return newly created instance */
1287
install_new_instance(int edit_cmd,char ** argv,INST_SELECTION * selection,NAME_ASSIGNMENT * assignment,int * export_flags)1288 static INSTANCE *install_new_instance(int edit_cmd, char **argv,
1289 INST_SELECTION *selection,
1290 NAME_ASSIGNMENT *assignment,
1291 int *export_flags)
1292 {
1293 INSTANCE *new;
1294
1295 new = alloc_instance((char *) 0);
1296 check_name_assignments(assignment);
1297 assign_new_parameters(new, edit_cmd, argv, assignment);
1298 *export_flags |=
1299 (do_name_assignments(new, assignment) | EXP_FLAG_MULTI_DIRS);
1300 insert_instance(new, selection);
1301 return (new);
1302 }
1303
1304 /* update_instance - update existing instance, return export flags */
1305
update_instance(INSTANCE * target,NAME_ASSIGNMENT * assignment)1306 static int update_instance(INSTANCE *target, NAME_ASSIGNMENT *assignment)
1307 {
1308 int export_flags;
1309
1310 check_name_assignments(assignment);
1311 export_flags = do_name_assignments(target, assignment);
1312 return (export_flags);
1313 }
1314
1315 /* select_existing_instance - return instance selected for management */
1316
select_existing_instance(INST_SELECTION * selection,int unlink_flag,int * export_flags)1317 static INSTANCE *select_existing_instance(INST_SELECTION *selection,
1318 int unlink_flag,
1319 int *export_flags)
1320 {
1321 INSTANCE *selected = 0;
1322 RING *entry;
1323 INSTANCE *ip;
1324
1325 #define DONT_UNLINK 0
1326 #define DO_UNLINK 1
1327
1328 if (selection->type != INST_SEL_NAME)
1329 msg_fatal("Select an instance via '-i name'");
1330
1331 /* Find the selected instance and its predecessor */
1332 FOREACH_INSTANCE(entry) {
1333 if (match_instance_selection(ip = RING_TO_INSTANCE(entry), selection)) {
1334 selected = ip;
1335 break;
1336 }
1337 }
1338
1339 if (selected == 0)
1340 msg_fatal("No instance named %s", selection->name);
1341
1342 if (unlink_flag) {
1343 /* Splice the target instance out of the list */
1344 if (ring_pred(entry) == instance_hd)
1345 msg_fatal("Cannot remove the primary instance");
1346 if (selected->enabled)
1347 msg_fatal("Cannot remove enabled instances");
1348 ring_detach(entry);
1349 if (export_flags == 0)
1350 msg_panic("select_existing_instance: no export flags");
1351 *export_flags |= EXP_FLAG_MULTI_DIRS;
1352 }
1353 return (selected);
1354 }
1355
1356 /* manage - create/destroy/... manage instances */
1357
manage(int edit_cmd,int argc,char ** argv,INST_SELECTION * selection,NAME_ASSIGNMENT * assignment)1358 static NORETURN manage(int edit_cmd, int argc, char **argv,
1359 INST_SELECTION *selection,
1360 NAME_ASSIGNMENT *assignment)
1361 {
1362 char *cmd;
1363 INSTANCE *target;
1364 int export_flags;
1365
1366 /*
1367 * Edit mode is not subject to iterator controls.
1368 */
1369 #define NO_EXPORT_FLAGS ((int *) 0)
1370 export_flags = 0;
1371
1372 switch (edit_cmd) {
1373 case EDIT_CMD_INIT:
1374 target = create_primary_instance();
1375 break;
1376
1377 case EDIT_CMD_CREATE:
1378 case EDIT_CMD_IMPORT:
1379 load_all_instances();
1380 target = install_new_instance(edit_cmd, argv, selection,
1381 assignment, &export_flags);
1382 break;
1383
1384 case EDIT_CMD_ASSIGN:
1385 load_all_instances();
1386 target =
1387 select_existing_instance(selection, DONT_UNLINK, NO_EXPORT_FLAGS);
1388 export_flags |= update_instance(target, assignment);
1389 if (export_flags == 0)
1390 exit(0);
1391 break;
1392
1393 case EDIT_CMD_DESTROY:
1394 case EDIT_CMD_DEPORT:
1395 load_all_instances();
1396 target = select_existing_instance(selection, DO_UNLINK, &export_flags);
1397 break;
1398
1399 default:
1400 load_all_instances();
1401 target =
1402 select_existing_instance(selection, DONT_UNLINK, NO_EXPORT_FLAGS);
1403 break;
1404 }
1405
1406 /*
1407 * Set up the helper script's process environment, and execute the helper
1408 * script.
1409 */
1410 #define HELPER "postmulti-script"
1411
1412 export_helper_environment(target, export_flags);
1413 cmd = concatenate(var_daemon_dir, "/" HELPER, (char *) 0);
1414 execl(cmd, cmd, "-e", EDIT_CMD_STR(edit_cmd), (char *) 0);
1415 msg_fatal("%s: %m", cmd);
1416 }
1417
1418 /* run_user_command - execute external command with requested MAIL_CONFIG env */
1419
run_user_command(INSTANCE * ip,int iter_cmd,int iter_flags,char ** argv)1420 static int run_user_command(INSTANCE *ip, int iter_cmd, int iter_flags,
1421 char **argv)
1422 {
1423 WAIT_STATUS_T status;
1424 int pid;
1425 int wpid;
1426
1427 /*
1428 * Set up a process environment. The postfix(1) command needs MAIL_CONFIG
1429 * (or the equivalent command-line option); it overrides everything else.
1430 *
1431 * postmulti(1) typically runs various Postfix utilities (postsuper, ...) in
1432 * the context of one or more instances. It can also run various scripts
1433 * on the users PATH. So we can't clobber the user's PATH, but do want to
1434 * make sure that the utilities in $command_directory are always found in
1435 * the right place (or at all).
1436 */
1437 switch (pid = fork()) {
1438 case -1:
1439 msg_warn("fork %s: %m", argv[0]);
1440 return -1;
1441 case 0:
1442 check_setenv(CONF_ENV_PATH, ip->config_dir);
1443 if (iter_cmd != ITER_CMD_POSTFIX) {
1444 check_setenv(VAR_DAEMON_DIR, var_daemon_dir);
1445 check_setenv(VAR_COMMAND_DIR, var_command_dir);
1446 check_setenv(VAR_CONFIG_DIR, ip->config_dir);
1447 check_setenv(VAR_QUEUE_DIR, ip->queue_dir);
1448 check_setenv(VAR_DATA_DIR, ip->data_dir);
1449 check_setenv(VAR_MULTI_NAME, ip->name ? ip->name : "");
1450 check_setenv(VAR_MULTI_GROUP, ip->gname ? ip->gname : "");
1451 check_setenv(VAR_MULTI_ENABLE, ip->enabled ?
1452 CONFIG_BOOL_YES : CONFIG_BOOL_NO);
1453 prepend_command_path();
1454 }
1455
1456 /*
1457 * Replace: postfix -- start ... With: postfix -- check ...
1458 */
1459 if (iter_cmd == ITER_CMD_POSTFIX
1460 && (iter_flags & ITER_FLAG_CHECK_DISABLED) && !ip->enabled)
1461 argv[2] = "check";
1462
1463 execvp(argv[0], argv);
1464 msg_fatal("execvp %s: %m", argv[0]);
1465 default:
1466 do {
1467 wpid = waitpid(pid, &status, 0);
1468 } while (wpid == -1 && errno == EINTR);
1469 return (wpid == -1 ? -1 :
1470 WIFEXITED(status) ? WEXITSTATUS(status) : 1);
1471 }
1472 }
1473
1474 /* word_in_list - look up command in start, stop, or control list */
1475
word_in_list(char * cmdlist,const char * cmd)1476 static int word_in_list(char *cmdlist, const char *cmd)
1477 {
1478 char *saved;
1479 char *cp;
1480 char *elem;
1481
1482 cp = saved = mystrdup(cmdlist);
1483 while ((elem = mystrtok(&cp, CHARS_COMMA_SP)) != 0 && strcmp(elem, cmd) != 0)
1484 /* void */ ;
1485 myfree(saved);
1486 return (elem != 0);
1487 }
1488
1489 /* iterate_postfix_command - execute postfix(1) command */
1490
iterate_postfix_command(int iter_cmd,int argc,char ** argv,INST_SELECTION * selection)1491 static int iterate_postfix_command(int iter_cmd, int argc, char **argv,
1492 INST_SELECTION *selection)
1493 {
1494 int exit_status;
1495 char *cmd;
1496 ARGV *my_argv;
1497 int iter_flags;
1498
1499 /*
1500 * Override the iterator controls.
1501 */
1502 if (word_in_list(var_multi_start_cmds, argv[0])) {
1503 iter_flags = ITER_FLAG_CHECK_DISABLED;
1504 } else if (word_in_list(var_multi_stop_cmds, argv[0])) {
1505 iter_flags = ITER_FLAG_SKIP_DISABLED | ITER_FLAG_REVERSE;
1506 } else if (word_in_list(var_multi_cntrl_cmds, argv[0])) {
1507 iter_flags = ITER_FLAG_SKIP_DISABLED;
1508 } else {
1509 iter_flags = 0;
1510 }
1511
1512 /*
1513 * Override the command line in a straightforward manner: prepend
1514 * "postfix --" to the command arguments. Other overrides (environment,
1515 * start -> check) are implemented below the iterator.
1516 */
1517 #define POSTFIX_CMD "postfix"
1518
1519 my_argv = argv_alloc(argc + 2);
1520 cmd = concatenate(var_command_dir, "/" POSTFIX_CMD, (char *) 0);
1521 argv_add(my_argv, cmd, "--", (char *) 0);
1522 myfree(cmd);
1523 while (*argv)
1524 argv_add(my_argv, *argv++, (char *) 0);
1525
1526 /*
1527 * Execute the command for all applicable Postfix instances.
1528 */
1529 exit_status =
1530 iterate_command(iter_cmd, iter_flags, my_argv->argv, selection);
1531
1532 argv_free(my_argv);
1533 return (exit_status);
1534 }
1535
1536 /* list_instances - list all selected instances */
1537
list_instances(int iter_flags,INST_SELECTION * selection)1538 static void list_instances(int iter_flags, INST_SELECTION *selection)
1539 {
1540 RING *entry;
1541 INSTANCE *ip;
1542
1543 /*
1544 * Iterate over the selected instances.
1545 */
1546 FOREACH_ITERATOR_INSTANCE(iter_flags, entry) {
1547 ip = RING_TO_INSTANCE(entry);
1548 if (match_instance_selection(ip, selection))
1549 vstream_printf("%-15s %-15s %-9s %s\n",
1550 ip->name ? ip->name : "-",
1551 ip->gname ? ip->gname : "-",
1552 ip->enabled ? "y" : "n",
1553 ip->config_dir);
1554 }
1555 if (vstream_fflush(VSTREAM_OUT))
1556 msg_fatal("error writing output: %m");
1557 }
1558
1559 /* iterate_command - execute command for selected instances */
1560
iterate_command(int iter_cmd,int iter_flags,char ** argv,INST_SELECTION * selection)1561 static int iterate_command(int iter_cmd, int iter_flags, char **argv,
1562 INST_SELECTION *selection)
1563 {
1564 int exit_status = 0;
1565 int matched = 0;
1566 RING *entry;
1567 INSTANCE *ip;
1568
1569 /*
1570 * Iterate over the selected instances.
1571 */
1572 FOREACH_ITERATOR_INSTANCE(iter_flags, entry) {
1573 ip = RING_TO_INSTANCE(entry);
1574 if ((iter_flags & ITER_FLAG_SKIP_DISABLED) && !ip->enabled)
1575 continue;
1576 if (!match_instance_selection(ip, selection))
1577 continue;
1578 matched = 1;
1579
1580 /* Run the requested command */
1581 if (run_user_command(ip, iter_cmd, iter_flags, argv) != 0)
1582 exit_status = 1;
1583 }
1584 if (matched == 0)
1585 msg_fatal("No matching instances");
1586
1587 return (exit_status);
1588 }
1589
1590 /* iterate - Iterate over all or selected instances */
1591
iterate(int iter_cmd,int iter_flags,int argc,char ** argv,INST_SELECTION * selection)1592 static NORETURN iterate(int iter_cmd, int iter_flags, int argc, char **argv,
1593 INST_SELECTION *selection)
1594 {
1595 int exit_status;
1596
1597 /*
1598 * In iterator mode, no selection means wild-card selection.
1599 */
1600 if (selection->type == INST_SEL_NONE)
1601 selection->type = INST_SEL_ALL;
1602
1603 /*
1604 * Load the in-memory instance table from main.cf files.
1605 */
1606 load_all_instances();
1607
1608 /*
1609 * Iterate over the selected instances.
1610 */
1611 switch (iter_cmd) {
1612 case ITER_CMD_POSTFIX:
1613 exit_status = iterate_postfix_command(iter_cmd, argc, argv, selection);
1614 break;
1615 case ITER_CMD_LIST:
1616 list_instances(iter_flags, selection);
1617 exit_status = 0;
1618 break;
1619 case ITER_CMD_GENERIC:
1620 exit_status = iterate_command(iter_cmd, iter_flags, argv, selection);
1621 break;
1622 default:
1623 msg_panic("iterate: unknown mode: %d", iter_cmd);
1624 }
1625 exit(exit_status);
1626 }
1627
usage(const char * progname)1628 static NORETURN usage(const char *progname)
1629 {
1630 msg_fatal("Usage:"
1631 "%s -l [-v] [-a] [-g group] [-i instance] | "
1632 "%s -p [-v] [-a] [-g group] [-i instance] command... | "
1633 "%s -x [-v] [-a] [-i name] [-g group] command... | "
1634 "%s -e action [-v] [-a] [-i name] [-g group] [-I name] "
1635 "[-G group] [param=value ...]",
1636 progname, progname, progname, progname);
1637 }
1638
1639 MAIL_VERSION_STAMP_DECLARE;
1640
1641 /* main - iterate commands over multiple instance or manage instances */
1642
main(int argc,char ** argv)1643 int main(int argc, char **argv)
1644 {
1645 int fd;
1646 struct stat st;
1647 char *slash;
1648 char *config_dir;
1649 int ch;
1650 static const CONFIG_STR_TABLE str_table[] = {
1651 VAR_MULTI_START_CMDS, DEF_MULTI_START_CMDS, &var_multi_start_cmds, 0, 0,
1652 VAR_MULTI_STOP_CMDS, DEF_MULTI_STOP_CMDS, &var_multi_stop_cmds, 0, 0,
1653 VAR_MULTI_CNTRL_CMDS, DEF_MULTI_CNTRL_CMDS, &var_multi_cntrl_cmds, 0, 0,
1654 0,
1655 };
1656 int instance_select_count = 0;
1657 int command_mode_count = 0;
1658 INST_SELECTION selection;
1659 NAME_ASSIGNMENT assignment;
1660 int iter_flags = ITER_FLAG_DEFAULT;
1661 int cmd_mode = 0;
1662 int code;
1663
1664 selection.type = INST_SEL_NONE;
1665 assignment.name = assignment.gname = 0;
1666
1667 /*
1668 * Fingerprint executables and core dumps.
1669 */
1670 MAIL_VERSION_STAMP_ALLOCATE;
1671
1672 /*
1673 * Be consistent with file permissions.
1674 */
1675 umask(022);
1676
1677 /*
1678 * To minimize confusion, make sure that the standard file descriptors
1679 * are open before opening anything else. XXX Work around for 44BSD where
1680 * fstat can return EBADF on an open file descriptor.
1681 */
1682 for (fd = 0; fd < 3; fd++)
1683 if (fstat(fd, &st) == -1
1684 && (close(fd), open("/dev/null", O_RDWR, 0)) != fd)
1685 msg_fatal("open /dev/null: %m");
1686
1687 /*
1688 * Set up diagnostics. XXX What if stdin is the system console during
1689 * boot time? It seems a bad idea to log startup errors to the console.
1690 * This is UNIX, a system that can run without hand holding.
1691 */
1692 if ((slash = strrchr(argv[0], '/')) != 0 && slash[1])
1693 argv[0] = slash + 1;
1694 if (isatty(STDERR_FILENO))
1695 msg_vstream_init(argv[0], VSTREAM_ERR);
1696 maillog_client_init(argv[0], MAILLOG_CLIENT_FLAG_LOGWRITER_FALLBACK);
1697
1698 /*
1699 * Check the Postfix library version as soon as we enable logging.
1700 */
1701 MAIL_VERSION_CHECK;
1702
1703 /*
1704 * Process main.cf parameters. This is done before the GETOPT() loop to
1705 * improve logging. This assumes that no command-line option can affect
1706 * parameter processing.
1707 */
1708 mail_conf_read();
1709 get_mail_conf_str_table(str_table);
1710 maillog_client_init(argv[0], MAILLOG_CLIENT_FLAG_LOGWRITER_FALLBACK);
1711
1712 if ((config_dir = getenv(CONF_ENV_PATH)) != 0
1713 && strcmp(config_dir, DEF_CONFIG_DIR) != 0)
1714 msg_fatal("Non-default configuration directory: %s=%s",
1715 CONF_ENV_PATH, config_dir);
1716
1717 /*
1718 * Parse switches. Move the above mail_conf_read() block after this loop,
1719 * if any command-line option can affect parameter processing.
1720 */
1721 while ((ch = GETOPT(argc, argv, "ae:g:i:G:I:lpRvx")) > 0) {
1722 switch (ch) {
1723 default:
1724 usage(argv[0]);
1725 /* NOTREACHED */
1726 case 'a':
1727 if (selection.type != INST_SEL_ALL)
1728 instance_select_count++;
1729 selection.type = INST_SEL_ALL;
1730 break;
1731 case 'e':
1732 if ((code = EDIT_CMD_CODE(optarg)) < 0)
1733 msg_fatal("Invalid '-e' edit action '%s'. Specify '%s', "
1734 "'%s', '%s', '%s', '%s', '%s', '%s' or '%s'",
1735 optarg,
1736 EDIT_CMD_STR(EDIT_CMD_CREATE),
1737 EDIT_CMD_STR(EDIT_CMD_DESTROY),
1738 EDIT_CMD_STR(EDIT_CMD_IMPORT),
1739 EDIT_CMD_STR(EDIT_CMD_DEPORT),
1740 EDIT_CMD_STR(EDIT_CMD_ENABLE),
1741 EDIT_CMD_STR(EDIT_CMD_DISABLE),
1742 EDIT_CMD_STR(EDIT_CMD_ASSIGN),
1743 EDIT_CMD_STR(EDIT_CMD_INIT));
1744 if (cmd_mode != code)
1745 command_mode_count++;
1746 cmd_mode = code;
1747 break;
1748 case 'g':
1749 instance_select_count++;
1750 selection.type = INST_SEL_GROUP;
1751 selection.name = optarg;
1752 break;
1753 case 'i':
1754 instance_select_count++;
1755 selection.type = INST_SEL_NAME;
1756 selection.name = optarg;
1757 break;
1758 case 'G':
1759 if (assignment.gname != 0)
1760 msg_fatal("Specify at most one '-G' option");
1761 assignment.gname = strcmp(optarg, "-") == 0 ? "" : optarg;
1762 break;
1763 case 'I':
1764 if (assignment.name != 0)
1765 msg_fatal("Specify at most one '-I' option");
1766 assignment.name = strcmp(optarg, "-") == 0 ? "" : optarg;
1767 break;
1768 case 'l':
1769 if (cmd_mode != ITER_CMD_LIST)
1770 command_mode_count++;
1771 cmd_mode = ITER_CMD_LIST;
1772 break;
1773 case 'p':
1774 if (cmd_mode != ITER_CMD_POSTFIX)
1775 command_mode_count++;
1776 cmd_mode = ITER_CMD_POSTFIX;
1777 break;
1778 case 'R':
1779 iter_flags ^= ITER_FLAG_REVERSE;
1780 break;
1781 case 'v':
1782 msg_verbose++;
1783 check_setenv(CONF_ENV_VERB, "");
1784 break;
1785 case 'x':
1786 if (cmd_mode != ITER_CMD_GENERIC)
1787 command_mode_count++;
1788 cmd_mode = ITER_CMD_GENERIC;
1789 break;
1790 }
1791 }
1792
1793 /*
1794 * Report missing arguments, or wrong arguments in the wrong context.
1795 */
1796 if (instance_select_count > 1)
1797 msg_fatal("Specity no more than one of '-a', '-g', '-i'");
1798
1799 if (command_mode_count != 1)
1800 msg_fatal("Specify exactly one of '-e', '-l', '-p', '-x'");
1801
1802 if (cmd_mode == ITER_CMD_LIST && argc > optind)
1803 msg_fatal("Command not allowed with '-l'");
1804
1805 if (cmd_mode == ITER_CMD_POSTFIX || cmd_mode == ITER_CMD_GENERIC)
1806 if (argc == optind)
1807 msg_fatal("Command required with '-p' or '-x' option");
1808
1809 if (cmd_mode == ITER_CMD_POSTFIX || (cmd_mode & EDIT_CMD_MASK_ALL))
1810 if (iter_flags != ITER_FLAG_DEFAULT)
1811 msg_fatal("The '-p' and '-e' options preclude the use of '-R'");
1812
1813 if ((cmd_mode & EDIT_CMD_MASK_ASSIGN) == 0
1814 && (assignment.name || assignment.gname)) {
1815 if ((cmd_mode & EDIT_CMD_MASK_ALL) == 0)
1816 msg_fatal("Cannot assign instance name or group without '-e %s'",
1817 EDIT_CMD_STR(EDIT_CMD_ASSIGN));
1818 else
1819 msg_fatal("Cannot assign instance name or group with '-e %s'",
1820 EDIT_CMD_STR(cmd_mode));
1821 }
1822 if (cmd_mode & EDIT_CMD_MASK_ALL) {
1823 if (cmd_mode == EDIT_CMD_ASSIGN
1824 && (assignment.name == 0 && assignment.gname == 0))
1825 msg_fatal("Specify new instance name or group with '-e %s'",
1826 EDIT_CMD_STR(cmd_mode));
1827
1828 if ((cmd_mode & ~EDIT_CMD_MASK_ADD) != 0 && argc > optind)
1829 msg_fatal("Parameter overrides not valid with '-e %s'",
1830 EDIT_CMD_STR(cmd_mode));
1831 }
1832
1833 /*
1834 * Sanity checks.
1835 */
1836 check_shared_dir_status();
1837
1838 /*
1839 * Iterate over selected instances, or manipulate one instance.
1840 */
1841 if (cmd_mode & ITER_CMD_MASK_ALL)
1842 iterate(cmd_mode, iter_flags, argc - optind, argv + optind, &selection);
1843 else
1844 manage(cmd_mode, argc - optind, argv + optind, &selection, &assignment);
1845 }
1846