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-rw-r--r--src/postalias/postalias.c897
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diff --git a/src/postalias/postalias.c b/src/postalias/postalias.c
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@@ -0,0 +1,897 @@
+/*++
+/* NAME
+/* postalias 1
+/* SUMMARY
+/* Postfix alias database maintenance
+/* SYNOPSIS
+/* .fi
+/* \fBpostalias\fR [\fB-Nfinoprsuvw\fR] [\fB-c \fIconfig_dir\fR]
+/* [\fB-d \fIkey\fR] [\fB-q \fIkey\fR]
+/* [\fIfile_type\fR:]\fIfile_name\fR ...
+/* DESCRIPTION
+/* The \fBpostalias\fR(1) command creates or queries one or more Postfix
+/* alias databases, or updates an existing one. The input and output
+/* file formats are expected to be compatible with Sendmail version 8,
+/* and are expected to be suitable for the use as NIS alias maps.
+/*
+/* If the result files do not exist they will be created with the
+/* same group and other read permissions as their source file.
+/*
+/* While a database update is in progress, signal delivery is
+/* postponed, and an exclusive, advisory, lock is placed on the
+/* entire database, in order to avoid surprises in spectator
+/* processes.
+/*
+/* The format of Postfix alias input files is described in
+/* \fBaliases\fR(5).
+/*
+/* By default the lookup key is mapped to lowercase to make
+/* the lookups case insensitive; as of Postfix 2.3 this case
+/* folding happens only with tables whose lookup keys are
+/* fixed-case strings such as btree:, dbm: or hash:. With
+/* earlier versions, the lookup key is folded even with tables
+/* where a lookup field can match both upper and lower case
+/* text, such as regexp: and pcre:. This resulted in loss of
+/* information with $\fInumber\fR substitutions.
+/*
+/* Options:
+/* .IP "\fB-c \fIconfig_dir\fR"
+/* Read the \fBmain.cf\fR configuration file in the named directory
+/* instead of the default configuration directory.
+/* .IP "\fB-d \fIkey\fR"
+/* Search the specified maps for \fIkey\fR and remove one entry per map.
+/* The exit status is zero when the requested information was found.
+/*
+/* If a key value of \fB-\fR is specified, the program reads key
+/* values from the standard input stream. The exit status is zero
+/* when at least one of the requested keys was found.
+/* .IP \fB-f\fR
+/* Do not fold the lookup key to lower case while creating or querying
+/* a table.
+/*
+/* With Postfix version 2.3 and later, this option has no
+/* effect for regular expression tables. There, case folding
+/* is controlled by appending a flag to a pattern.
+/* .IP \fB-i\fR
+/* Incremental mode. Read entries from standard input and do not
+/* truncate an existing database. By default, \fBpostalias\fR(1) creates
+/* a new database from the entries in \fIfile_name\fR.
+/* .IP \fB-N\fR
+/* Include the terminating null character that terminates lookup keys
+/* and values. By default, \fBpostalias\fR(1) does whatever
+/* is the default for
+/* the host operating system.
+/* .IP \fB-n\fR
+/* Don't include the terminating null character that terminates lookup
+/* keys and values. By default, \fBpostalias\fR(1) does whatever
+/* is the default for
+/* the host operating system.
+/* .IP \fB-o\fR
+/* Do not release root privileges when processing a non-root
+/* input file. By default, \fBpostalias\fR(1) drops root privileges
+/* and runs as the source file owner instead.
+/* .IP \fB-p\fR
+/* Do not inherit the file access permissions from the input file
+/* when creating a new file. Instead, create a new file with default
+/* access permissions (mode 0644).
+/* .IP "\fB-q \fIkey\fR"
+/* Search the specified maps for \fIkey\fR and write the first value
+/* found to the standard output stream. The exit status is zero
+/* when the requested information was found.
+/*
+/* Note: this performs a single query with the key as specified,
+/* and does not make iterative queries with substrings of the
+/* key as described in the aliases(5) manual page.
+/*
+/* If a key value of \fB-\fR is specified, the program reads key
+/* values from the standard input stream and writes one line of
+/* \fIkey: value\fR output for each key that was found. The exit
+/* status is zero when at least one of the requested keys was found.
+/* .IP \fB-r\fR
+/* When updating a table, do not complain about attempts to update
+/* existing entries, and make those updates anyway.
+/* .IP \fB-s\fR
+/* Retrieve all database elements, and write one line of
+/* \fIkey: value\fR output for each element. The elements are
+/* printed in database order, which is not necessarily the same
+/* as the original input order.
+/* This feature is available in Postfix version 2.2 and later,
+/* and is not available for all database types.
+/* .IP \fB-u\fR
+/* Disable UTF-8 support. UTF-8 support is enabled by default
+/* when "smtputf8_enable = yes". It requires that keys and
+/* values are valid UTF-8 strings.
+/* .IP \fB-v\fR
+/* Enable verbose logging for debugging purposes. Multiple \fB-v\fR
+/* options make the software increasingly verbose.
+/* .IP \fB-w\fR
+/* When updating a table, do not complain about attempts to update
+/* existing entries, and ignore those attempts.
+/* .PP
+/* Arguments:
+/* .IP \fIfile_type\fR
+/* The database type. To find out what types are supported, use
+/* the "\fBpostconf -m\fR" command.
+/*
+/* The \fBpostalias\fR(1) command can query any supported file type,
+/* but it can create only the following file types:
+/* .RS
+/* .IP \fBbtree\fR
+/* The output is a btree file, named \fIfile_name\fB.db\fR.
+/* This is available on systems with support for \fBdb\fR databases.
+/* .IP \fBcdb\fR
+/* The output is one file named \fIfile_name\fB.cdb\fR.
+/* This is available on systems with support for \fBcdb\fR databases.
+/* .IP \fBdbm\fR
+/* The output consists of two files, named \fIfile_name\fB.pag\fR and
+/* \fIfile_name\fB.dir\fR.
+/* This is available on systems with support for \fBdbm\fR databases.
+/* .IP \fBhash\fR
+/* The output is a hashed file, named \fIfile_name\fB.db\fR.
+/* This is available on systems with support for \fBdb\fR databases.
+/* .IP \fBfail\fR
+/* A table that reliably fails all requests. The lookup table
+/* name is used for logging only. This table exists to simplify
+/* Postfix error tests.
+/* .IP \fBsdbm\fR
+/* The output consists of two files, named \fIfile_name\fB.pag\fR and
+/* \fIfile_name\fB.dir\fR.
+/* This is available on systems with support for \fBsdbm\fR databases.
+/* .PP
+/* When no \fIfile_type\fR is specified, the software uses the database
+/* type specified via the \fBdefault_database_type\fR configuration
+/* parameter.
+/* The default value for this parameter depends on the host environment.
+/* .RE
+/* .IP \fIfile_name\fR
+/* The name of the alias database source file when creating a database.
+/* DIAGNOSTICS
+/* Problems are logged to the standard error stream and to
+/* \fBsyslogd\fR(8) or \fBpostlogd\fR(8). No output means that
+/* no problems were detected. Duplicate entries are skipped and are
+/* flagged with a warning.
+/*
+/* \fBpostalias\fR(1) terminates with zero exit status in case of success
+/* (including successful "\fBpostalias -q\fR" lookup) and terminates
+/* with non-zero exit status in case of failure.
+/* ENVIRONMENT
+/* .ad
+/* .fi
+/* .IP \fBMAIL_CONFIG\fR
+/* Directory with Postfix configuration files.
+/* .IP \fBMAIL_VERBOSE\fR
+/* Enable verbose logging for debugging purposes.
+/* CONFIGURATION PARAMETERS
+/* .ad
+/* .fi
+/* The following \fBmain.cf\fR parameters are especially relevant to
+/* this program.
+/*
+/* The text below provides only a parameter summary. See
+/* \fBpostconf\fR(5) for more details including examples.
+/* .IP "\fBalias_database (see 'postconf -d' output)\fR"
+/* The alias databases for \fBlocal\fR(8) delivery that are updated with
+/* "\fBnewaliases\fR" or with "\fBsendmail -bi\fR".
+/* .IP "\fBconfig_directory (see 'postconf -d' output)\fR"
+/* The default location of the Postfix main.cf and master.cf
+/* configuration files.
+/* .IP "\fBberkeley_db_create_buffer_size (16777216)\fR"
+/* The per-table I/O buffer size for programs that create Berkeley DB
+/* hash or btree tables.
+/* .IP "\fBberkeley_db_read_buffer_size (131072)\fR"
+/* The per-table I/O buffer size for programs that read Berkeley DB
+/* hash or btree tables.
+/* .IP "\fBdefault_database_type (see 'postconf -d' output)\fR"
+/* The default database type for use in \fBnewaliases\fR(1), \fBpostalias\fR(1)
+/* and \fBpostmap\fR(1) commands.
+/* .IP "\fBimport_environment (see 'postconf -d' output)\fR"
+/* The list of environment parameters that a privileged Postfix
+/* process will import from a non-Postfix parent process, or name=value
+/* environment overrides.
+/* .IP "\fBsmtputf8_enable (yes)\fR"
+/* Enable preliminary SMTPUTF8 support for the protocols described
+/* in RFC 6531..6533.
+/* .IP "\fBsyslog_facility (mail)\fR"
+/* The syslog facility of Postfix logging.
+/* .IP "\fBsyslog_name (see 'postconf -d' output)\fR"
+/* A prefix that is prepended to the process name in syslog
+/* records, so that, for example, "smtpd" becomes "prefix/smtpd".
+/* STANDARDS
+/* RFC 822 (ARPA Internet Text Messages)
+/* SEE ALSO
+/* aliases(5), format of alias database input file.
+/* local(8), Postfix local delivery agent.
+/* postconf(1), supported database types
+/* postconf(5), configuration parameters
+/* postmap(1), create/update/query lookup tables
+/* newaliases(1), Sendmail compatibility interface.
+/* postlogd(8), Postfix logging
+/* syslogd(8), system logging
+/* README FILES
+/* .ad
+/* .fi
+/* Use "\fBpostconf readme_directory\fR" or
+/* "\fBpostconf html_directory\fR" to locate this information.
+/* .na
+/* .nf
+/* DATABASE_README, Postfix lookup table overview
+/* LICENSE
+/* .ad
+/* .fi
+/* The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/* Wietse Venema
+/* IBM T.J. Watson Research
+/* P.O. Box 704
+/* Yorktown Heights, NY 10598, USA
+/*
+/* Wietse Venema
+/* Google, Inc.
+/* 111 8th Avenue
+/* New York, NY 10011, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <string.h>
+
+/* Utility library. */
+
+#include <msg.h>
+#include <mymalloc.h>
+#include <vstring.h>
+#include <vstream.h>
+#include <msg_vstream.h>
+#include <readlline.h>
+#include <stringops.h>
+#include <split_at.h>
+#include <vstring_vstream.h>
+#include <set_eugid.h>
+#include <warn_stat.h>
+#include <clean_env.h>
+
+/* Global library. */
+
+#include <tok822.h>
+#include <mail_conf.h>
+#include <mail_dict.h>
+#include <mail_params.h>
+#include <mail_version.h>
+#include <mkmap.h>
+#include <mail_task.h>
+#include <dict_proxy.h>
+#include <mail_parm_split.h>
+#include <maillog_client.h>
+
+/* Application-specific. */
+
+#define STR vstring_str
+#define LEN VSTRING_LEN
+
+#define POSTALIAS_FLAG_AS_OWNER (1<<0) /* open dest as owner of source */
+#define POSTALIAS_FLAG_SAVE_PERM (1<<1) /* copy access permission
+ * from source */
+
+/* postalias - create or update alias database */
+
+static void postalias(char *map_type, char *path_name, int postalias_flags,
+ int open_flags, int dict_flags)
+{
+ VSTREAM *NOCLOBBER source_fp;
+ VSTRING *line_buffer;
+ MKMAP *mkmap;
+ int lineno;
+ int last_line;
+ VSTRING *key_buffer;
+ VSTRING *value_buffer;
+ TOK822 *tok_list;
+ TOK822 *key_list;
+ TOK822 *colon;
+ TOK822 *value_list;
+ struct stat st;
+ mode_t saved_mask;
+
+ /*
+ * Initialize.
+ */
+ line_buffer = vstring_alloc(100);
+ key_buffer = vstring_alloc(100);
+ value_buffer = vstring_alloc(100);
+ if ((open_flags & O_TRUNC) == 0) {
+ /* Incremental mode. */
+ source_fp = VSTREAM_IN;
+ vstream_control(source_fp, CA_VSTREAM_CTL_PATH("stdin"), CA_VSTREAM_CTL_END);
+ } else {
+ /* Create database. */
+ if (strcmp(map_type, DICT_TYPE_PROXY) == 0)
+ msg_fatal("can't create maps via the proxy service");
+ dict_flags |= DICT_FLAG_BULK_UPDATE;
+ if ((source_fp = vstream_fopen(path_name, O_RDONLY, 0)) == 0)
+ msg_fatal("open %s: %m", path_name);
+ }
+ if (fstat(vstream_fileno(source_fp), &st) < 0)
+ msg_fatal("fstat %s: %m", path_name);
+
+ /*
+ * Turn off group/other read permissions as indicated in the source file.
+ */
+ if ((postalias_flags & POSTALIAS_FLAG_SAVE_PERM) && S_ISREG(st.st_mode))
+ saved_mask = umask(022 | (~st.st_mode & 077));
+
+ /*
+ * If running as root, run as the owner of the source file, so that the
+ * result shows proper ownership, and so that a bug in postalias does not
+ * allow privilege escalation.
+ */
+ if ((postalias_flags & POSTALIAS_FLAG_AS_OWNER) && getuid() == 0
+ && (st.st_uid != geteuid() || st.st_gid != getegid()))
+ set_eugid(st.st_uid, st.st_gid);
+
+ /*
+ * Open the database, create it when it does not exist, truncate it when
+ * it does exist, and lock out any spectators.
+ */
+ mkmap = mkmap_open(map_type, path_name, open_flags, dict_flags);
+
+ /*
+ * And restore the umask, in case it matters.
+ */
+ if ((postalias_flags & POSTALIAS_FLAG_SAVE_PERM) && S_ISREG(st.st_mode))
+ umask(saved_mask);
+
+ /*
+ * Trap "exceptions" so that we can restart a bulk-mode update after a
+ * recoverable error.
+ */
+ for (;;) {
+ if (dict_isjmp(mkmap->dict) != 0
+ && dict_setjmp(mkmap->dict) != 0
+ && vstream_fseek(source_fp, SEEK_SET, 0) < 0)
+ msg_fatal("seek %s: %m", VSTREAM_PATH(source_fp));
+
+ /*
+ * Add records to the database.
+ */
+ last_line = 0;
+ while (readllines(line_buffer, source_fp, &last_line, &lineno)) {
+
+ /*
+ * First some UTF-8 checks sans casefolding.
+ */
+ if ((mkmap->dict->flags & DICT_FLAG_UTF8_ACTIVE)
+ && !allascii(STR(line_buffer))
+ && !valid_utf8_string(STR(line_buffer), LEN(line_buffer))) {
+ msg_warn("%s, line %d: non-UTF-8 input \"%s\""
+ " -- ignoring this line",
+ VSTREAM_PATH(source_fp), lineno, STR(line_buffer));
+ continue;
+ }
+
+ /*
+ * Tokenize the input, so that we do the right thing when a
+ * quoted localpart contains special characters such as "@", ":"
+ * and so on.
+ */
+ if ((tok_list = tok822_scan(STR(line_buffer), (TOK822 **) 0)) == 0)
+ continue;
+
+ /*
+ * Enforce the key:value format. Disallow missing keys,
+ * multi-address keys, or missing values. In order to specify an
+ * empty string or value, enclose it in double quotes.
+ */
+ if ((colon = tok822_find_type(tok_list, ':')) == 0
+ || colon->prev == 0 || colon->next == 0
+ || tok822_rfind_type(colon, ',')) {
+ msg_warn("%s, line %d: need name:value pair",
+ VSTREAM_PATH(source_fp), lineno);
+ tok822_free_tree(tok_list);
+ continue;
+ }
+
+ /*
+ * Key must be local. XXX We should use the Postfix rewriting and
+ * resolving services to handle all address forms correctly.
+ * However, we can't count on the mail system being up when the
+ * alias database is being built, so we're guessing a bit.
+ */
+ if (tok822_rfind_type(colon, '@') || tok822_rfind_type(colon, '%')) {
+ msg_warn("%s, line %d: name must be local",
+ VSTREAM_PATH(source_fp), lineno);
+ tok822_free_tree(tok_list);
+ continue;
+ }
+
+ /*
+ * Split the input into key and value parts, and convert from
+ * token representation back to string representation. Convert
+ * the key to internal (unquoted) form, because the resolver
+ * produces addresses in internal form. Convert the value to
+ * external (quoted) form, because it will have to be re-parsed
+ * upon lookup. Discard the token representation when done.
+ */
+ key_list = tok_list;
+ tok_list = 0;
+ value_list = tok822_cut_after(colon);
+ tok822_unlink(colon);
+ tok822_free(colon);
+
+ tok822_internalize(key_buffer, key_list, TOK822_STR_DEFL);
+ tok822_free_tree(key_list);
+
+ tok822_externalize(value_buffer, value_list, TOK822_STR_DEFL);
+ tok822_free_tree(value_list);
+
+ /*
+ * Store the value under a case-insensitive key.
+ */
+ mkmap_append(mkmap, STR(key_buffer), STR(value_buffer));
+ if (mkmap->dict->error)
+ msg_fatal("table %s:%s: write error: %m",
+ mkmap->dict->type, mkmap->dict->name);
+ }
+ break;
+ }
+
+ /*
+ * Update or append sendmail and NIS signatures.
+ */
+ if ((open_flags & O_TRUNC) == 0)
+ mkmap->dict->flags |= DICT_FLAG_DUP_REPLACE;
+
+ /*
+ * Sendmail compatibility: add the @:@ signature to indicate that the
+ * database is complete. This might be needed by NIS clients running
+ * sendmail.
+ */
+ mkmap_append(mkmap, "@", "@");
+ if (mkmap->dict->error)
+ msg_fatal("table %s:%s: write error: %m",
+ mkmap->dict->type, mkmap->dict->name);
+
+ /*
+ * NIS compatibility: add time and master info. Unlike other information,
+ * this information MUST be written without a trailing null appended to
+ * key or value.
+ */
+ mkmap->dict->flags &= ~DICT_FLAG_TRY1NULL;
+ mkmap->dict->flags |= DICT_FLAG_TRY0NULL;
+ vstring_sprintf(value_buffer, "%010ld", (long) time((time_t *) 0));
+#if (defined(HAS_NIS) || defined(HAS_NISPLUS))
+ mkmap->dict->flags &= ~DICT_FLAG_FOLD_FIX;
+ mkmap_append(mkmap, "YP_LAST_MODIFIED", STR(value_buffer));
+ mkmap_append(mkmap, "YP_MASTER_NAME", var_myhostname);
+#endif
+
+ /*
+ * Close the alias database, and release the lock.
+ */
+ mkmap_close(mkmap);
+
+ /*
+ * Cleanup. We're about to terminate, but it is a good sanity check.
+ */
+ vstring_free(value_buffer);
+ vstring_free(key_buffer);
+ vstring_free(line_buffer);
+ if (source_fp != VSTREAM_IN)
+ vstream_fclose(source_fp);
+}
+
+/* postalias_queries - apply multiple requests from stdin */
+
+static int postalias_queries(VSTREAM *in, char **maps, const int map_count,
+ const int dict_flags)
+{
+ int found = 0;
+ VSTRING *keybuf = vstring_alloc(100);
+ DICT **dicts;
+ const char *map_name;
+ const char *value;
+ int n;
+
+ /*
+ * Sanity check.
+ */
+ if (map_count <= 0)
+ msg_panic("postalias_queries: bad map count");
+
+ /*
+ * Prepare to open maps lazily.
+ */
+ dicts = (DICT **) mymalloc(sizeof(*dicts) * map_count);
+ for (n = 0; n < map_count; n++)
+ dicts[n] = 0;
+
+ /*
+ * Perform all queries. Open maps on the fly, to avoid opening
+ * unnecessary maps.
+ */
+ while (vstring_get_nonl(keybuf, in) != VSTREAM_EOF) {
+ for (n = 0; n < map_count; n++) {
+ if (dicts[n] == 0)
+ dicts[n] = ((map_name = split_at(maps[n], ':')) != 0 ?
+ dict_open3(maps[n], map_name, O_RDONLY, dict_flags) :
+ dict_open3(var_db_type, maps[n], O_RDONLY, dict_flags));
+ if ((value = dict_get(dicts[n], STR(keybuf))) != 0) {
+ if (*value == 0) {
+ msg_warn("table %s:%s: key %s: empty string result is not allowed",
+ dicts[n]->type, dicts[n]->name, STR(keybuf));
+ msg_warn("table %s:%s should return NO RESULT in case of NOT FOUND",
+ dicts[n]->type, dicts[n]->name);
+ }
+ vstream_printf("%s: %s\n", STR(keybuf), value);
+ found = 1;
+ break;
+ }
+ if (dicts[n]->error)
+ msg_fatal("table %s:%s: query error: %m",
+ dicts[n]->type, dicts[n]->name);
+ }
+ }
+ if (found)
+ vstream_fflush(VSTREAM_OUT);
+
+ /*
+ * Cleanup.
+ */
+ for (n = 0; n < map_count; n++)
+ if (dicts[n])
+ dict_close(dicts[n]);
+ myfree((void *) dicts);
+ vstring_free(keybuf);
+
+ return (found);
+}
+
+/* postalias_query - query a map and print the result to stdout */
+
+static int postalias_query(const char *map_type, const char *map_name,
+ const char *key, int dict_flags)
+{
+ DICT *dict;
+ const char *value;
+
+ dict = dict_open3(map_type, map_name, O_RDONLY, dict_flags);
+ if ((value = dict_get(dict, key)) != 0) {
+ if (*value == 0) {
+ msg_warn("table %s:%s: key %s: empty string result is not allowed",
+ map_type, map_name, key);
+ msg_warn("table %s:%s should return NO RESULT in case of NOT FOUND",
+ map_type, map_name);
+ }
+ vstream_printf("%s\n", value);
+ }
+ if (dict->error)
+ msg_fatal("table %s:%s: query error: %m", dict->type, dict->name);
+ vstream_fflush(VSTREAM_OUT);
+ dict_close(dict);
+ return (value != 0);
+}
+
+/* postalias_deletes - apply multiple requests from stdin */
+
+static int postalias_deletes(VSTREAM *in, char **maps, const int map_count,
+ int dict_flags)
+{
+ int found = 0;
+ VSTRING *keybuf = vstring_alloc(100);
+ DICT **dicts;
+ const char *map_name;
+ int n;
+ int open_flags;
+
+ /*
+ * Sanity check.
+ */
+ if (map_count <= 0)
+ msg_panic("postalias_deletes: bad map count");
+
+ /*
+ * Open maps ahead of time.
+ */
+ dicts = (DICT **) mymalloc(sizeof(*dicts) * map_count);
+ for (n = 0; n < map_count; n++) {
+ map_name = split_at(maps[n], ':');
+ if (map_name && strcmp(maps[n], DICT_TYPE_PROXY) == 0)
+ open_flags = O_RDWR | O_CREAT; /* XXX */
+ else
+ open_flags = O_RDWR;
+ dicts[n] = (map_name != 0 ?
+ dict_open3(maps[n], map_name, open_flags, dict_flags) :
+ dict_open3(var_db_type, maps[n], open_flags, dict_flags));
+ }
+
+ /*
+ * Perform all requests.
+ */
+ while (vstring_get_nonl(keybuf, in) != VSTREAM_EOF) {
+ for (n = 0; n < map_count; n++) {
+ found |= (dict_del(dicts[n], STR(keybuf)) == 0);
+ if (dicts[n]->error)
+ msg_fatal("table %s:%s: delete error: %m",
+ dicts[n]->type, dicts[n]->name);
+ }
+ }
+
+ /*
+ * Cleanup.
+ */
+ for (n = 0; n < map_count; n++)
+ if (dicts[n])
+ dict_close(dicts[n]);
+ myfree((void *) dicts);
+ vstring_free(keybuf);
+
+ return (found);
+}
+
+/* postalias_delete - delete a key value pair from a map */
+
+static int postalias_delete(const char *map_type, const char *map_name,
+ const char *key, int dict_flags)
+{
+ DICT *dict;
+ int status;
+ int open_flags;
+
+ if (strcmp(map_type, DICT_TYPE_PROXY) == 0)
+ open_flags = O_RDWR | O_CREAT; /* XXX */
+ else
+ open_flags = O_RDWR;
+ dict = dict_open3(map_type, map_name, open_flags, dict_flags);
+ status = dict_del(dict, key);
+ if (dict->error)
+ msg_fatal("table %s:%s: delete error: %m", dict->type, dict->name);
+ dict_close(dict);
+ return (status == 0);
+}
+
+/* postalias_seq - print all map entries to stdout */
+
+static void postalias_seq(const char *map_type, const char *map_name,
+ int dict_flags)
+{
+ DICT *dict;
+ const char *key;
+ const char *value;
+ int func;
+
+ if (strcmp(map_type, DICT_TYPE_PROXY) == 0)
+ msg_fatal("can't sequence maps via the proxy service");
+ dict = dict_open3(map_type, map_name, O_RDONLY, dict_flags);
+ for (func = DICT_SEQ_FUN_FIRST; /* void */ ; func = DICT_SEQ_FUN_NEXT) {
+ if (dict_seq(dict, func, &key, &value) != 0)
+ break;
+ if (*key == 0) {
+ msg_warn("table %s:%s: empty lookup key value is not allowed",
+ map_type, map_name);
+ } else if (*value == 0) {
+ msg_warn("table %s:%s: key %s: empty string result is not allowed",
+ map_type, map_name, key);
+ msg_warn("table %s:%s should return NO RESULT in case of NOT FOUND",
+ map_type, map_name);
+ }
+ vstream_printf("%s: %s\n", key, value);
+ }
+ if (dict->error)
+ msg_fatal("table %s:%s: sequence error: %m", dict->type, dict->name);
+ vstream_fflush(VSTREAM_OUT);
+ dict_close(dict);
+}
+
+/* usage - explain */
+
+static NORETURN usage(char *myname)
+{
+ msg_fatal("usage: %s [-Nfinoprsuvw] [-c config_dir] [-d key] [-q key] [map_type:]file...",
+ myname);
+}
+
+MAIL_VERSION_STAMP_DECLARE;
+
+int main(int argc, char **argv)
+{
+ char *path_name;
+ int ch;
+ int fd;
+ char *slash;
+ struct stat st;
+ int postalias_flags = POSTALIAS_FLAG_AS_OWNER | POSTALIAS_FLAG_SAVE_PERM;
+ int open_flags = O_RDWR | O_CREAT | O_TRUNC;
+ int dict_flags = (DICT_FLAG_DUP_WARN | DICT_FLAG_FOLD_FIX
+ | DICT_FLAG_UTF8_REQUEST);
+ char *query = 0;
+ char *delkey = 0;
+ int sequence = 0;
+ int found;
+ ARGV *import_env;
+
+ /*
+ * Fingerprint executables and core dumps.
+ */
+ MAIL_VERSION_STAMP_ALLOCATE;
+
+ /*
+ * Be consistent with file permissions.
+ */
+ umask(022);
+
+ /*
+ * To minimize confusion, make sure that the standard file descriptors
+ * are open before opening anything else. XXX Work around for 44BSD where
+ * fstat can return EBADF on an open file descriptor.
+ */
+ for (fd = 0; fd < 3; fd++)
+ if (fstat(fd, &st) == -1
+ && (close(fd), open("/dev/null", O_RDWR, 0)) != fd)
+ msg_fatal("open /dev/null: %m");
+
+ /*
+ * Process environment options as early as we can. We are not set-uid,
+ * and we are supposed to be running in a controlled environment.
+ */
+ if (getenv(CONF_ENV_VERB))
+ msg_verbose = 1;
+
+ /*
+ * Initialize. Set up logging. Read the global configuration file after
+ * parsing command-line arguments.
+ */
+ if ((slash = strrchr(argv[0], '/')) != 0 && slash[1])
+ argv[0] = slash + 1;
+ msg_vstream_init(argv[0], VSTREAM_ERR);
+ maillog_client_init(mail_task(argv[0]), MAILLOG_CLIENT_FLAG_NONE);
+
+ /*
+ * Check the Postfix library version as soon as we enable logging.
+ */
+ MAIL_VERSION_CHECK;
+
+ /*
+ * Parse JCL.
+ */
+ while ((ch = GETOPT(argc, argv, "Nc:d:finopq:rsuvw")) > 0) {
+ switch (ch) {
+ default:
+ usage(argv[0]);
+ break;
+ case 'N':
+ dict_flags |= DICT_FLAG_TRY1NULL;
+ dict_flags &= ~DICT_FLAG_TRY0NULL;
+ break;
+ case 'c':
+ if (setenv(CONF_ENV_PATH, optarg, 1) < 0)
+ msg_fatal("out of memory");
+ break;
+ case 'd':
+ if (sequence || query || delkey)
+ msg_fatal("specify only one of -s -q or -d");
+ delkey = optarg;
+ break;
+ case 'f':
+ dict_flags &= ~DICT_FLAG_FOLD_FIX;
+ break;
+ case 'i':
+ open_flags &= ~O_TRUNC;
+ break;
+ case 'n':
+ dict_flags |= DICT_FLAG_TRY0NULL;
+ dict_flags &= ~DICT_FLAG_TRY1NULL;
+ break;
+ case 'o':
+ postalias_flags &= ~POSTALIAS_FLAG_AS_OWNER;
+ break;
+ case 'p':
+ postalias_flags &= ~POSTALIAS_FLAG_SAVE_PERM;
+ break;
+ case 'q':
+ if (sequence || query || delkey)
+ msg_fatal("specify only one of -s -q or -d");
+ query = optarg;
+ break;
+ case 'r':
+ dict_flags &= ~(DICT_FLAG_DUP_WARN | DICT_FLAG_DUP_IGNORE);
+ dict_flags |= DICT_FLAG_DUP_REPLACE;
+ break;
+ case 's':
+ if (query || delkey)
+ msg_fatal("specify only one of -s or -q or -d");
+ sequence = 1;
+ break;
+ case 'u':
+ dict_flags &= ~DICT_FLAG_UTF8_REQUEST;
+ break;
+ case 'v':
+ msg_verbose++;
+ break;
+ case 'w':
+ dict_flags &= ~(DICT_FLAG_DUP_WARN | DICT_FLAG_DUP_REPLACE);
+ dict_flags |= DICT_FLAG_DUP_IGNORE;
+ break;
+ }
+ }
+ mail_conf_read();
+ /* Enforce consistent operation of different Postfix parts. */
+ import_env = mail_parm_split(VAR_IMPORT_ENVIRON, var_import_environ);
+ update_env(import_env->argv);
+ argv_free(import_env);
+ /* Re-evaluate mail_task() after reading main.cf. */
+ maillog_client_init(mail_task(argv[0]), MAILLOG_CLIENT_FLAG_NONE);
+ mail_dict_init();
+
+ /*
+ * Use the map type specified by the user, or fall back to a default
+ * database type.
+ */
+ if (delkey) { /* remove entry */
+ if (optind + 1 > argc)
+ usage(argv[0]);
+ if (strcmp(delkey, "-") == 0)
+ exit(postalias_deletes(VSTREAM_IN, argv + optind, argc - optind,
+ dict_flags | DICT_FLAG_LOCK) == 0);
+ found = 0;
+ while (optind < argc) {
+ if ((path_name = split_at(argv[optind], ':')) != 0) {
+ found |= postalias_delete(argv[optind], path_name, delkey,
+ dict_flags | DICT_FLAG_LOCK);
+ } else {
+ found |= postalias_delete(var_db_type, argv[optind], delkey,
+ dict_flags | DICT_FLAG_LOCK);
+ }
+ optind++;
+ }
+ exit(found ? 0 : 1);
+ } else if (query) { /* query map(s) */
+ if (optind + 1 > argc)
+ usage(argv[0]);
+ if (strcmp(query, "-") == 0)
+ exit(postalias_queries(VSTREAM_IN, argv + optind, argc - optind,
+ dict_flags | DICT_FLAG_LOCK) == 0);
+ while (optind < argc) {
+ if ((path_name = split_at(argv[optind], ':')) != 0) {
+ found = postalias_query(argv[optind], path_name, query,
+ dict_flags | DICT_FLAG_LOCK);
+ } else {
+ found = postalias_query(var_db_type, argv[optind], query,
+ dict_flags | DICT_FLAG_LOCK);
+ }
+ if (found)
+ exit(0);
+ optind++;
+ }
+ exit(1);
+ } else if (sequence) {
+ while (optind < argc) {
+ if ((path_name = split_at(argv[optind], ':')) != 0) {
+ postalias_seq(argv[optind], path_name,
+ dict_flags | DICT_FLAG_LOCK);
+ } else {
+ postalias_seq(var_db_type, argv[optind],
+ dict_flags | DICT_FLAG_LOCK);
+ }
+ exit(0);
+ }
+ exit(1);
+ } else { /* create/update map(s) */
+ if (optind + 1 > argc)
+ usage(argv[0]);
+ while (optind < argc) {
+ if ((path_name = split_at(argv[optind], ':')) != 0) {
+ postalias(argv[optind], path_name, postalias_flags,
+ open_flags, dict_flags);
+ } else {
+ postalias(var_db_type, argv[optind], postalias_flags,
+ open_flags, dict_flags);
+ }
+ optind++;
+ }
+ exit(0);
+ }
+}