unofficial mirror of notmuch@notmuchmail.org
 help / color / mirror / code / Atom feed
blob 50008f7872836c2d45b29b1a1b7f303c6a4f1f95 30550 bytes (raw)
name: notmuch-config.c 	 # note: path name is non-authoritative(*)

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
 
/* notmuch - Not much of an email program, (just index and search)
 *
 * Copyright © 2009 Carl Worth
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see https://www.gnu.org/licenses/ .
 *
 * Author: Carl Worth <cworth@cworth.org>
 */

#include "notmuch-client.h"

#include <pwd.h>
#include <netdb.h>
#include <assert.h>

#include "unicode-util.h"

static const char toplevel_config_comment[] =
    " .notmuch-config - Configuration file for the notmuch mail system\n"
    "\n"
    " For more information about notmuch, see https://notmuchmail.org";

static const char database_config_comment[] =
    " Database configuration\n"
    "\n"
    " The only value supported here is 'path' which should be the top-level\n"
    " directory where your mail currently exists and to where mail will be\n"
    " delivered in the future. Files should be individual email messages.\n"
    " Notmuch will store its database within a sub-directory of the path\n"
    " configured here named \".notmuch\".\n";

static const char new_config_comment[] =
    " Configuration for \"notmuch new\"\n"
    "\n"
    " The following options are supported here:\n"
    "\n"
    "\ttags	A list (separated by ';') of the tags that will be\n"
    "\t	added to all messages incorporated by \"notmuch new\".\n"
    "\n"
    "\tignore	A list (separated by ';') of file and directory names\n"
    "\t	that will not be searched for messages by \"notmuch new\".\n"
    "\n"
    "\t	NOTE: *Every* file/directory that goes by one of those\n"
    "\t	names will be ignored, independent of its depth/location\n"
    "\t	in the mail store.\n";

static const char user_config_comment[] =
    " User configuration\n"
    "\n"
    " Here is where you can let notmuch know how you would like to be\n"
    " addressed. Valid settings are\n"
    "\n"
    "\tname		Your full name.\n"
    "\tprimary_email	Your primary email address.\n"
    "\tother_email	A list (separated by ';') of other email addresses\n"
    "\t		at which you receive email.\n"
    "\n"
    " Notmuch will use the various email addresses configured here when\n"
    " formatting replies. It will avoid including your own addresses in the\n"
    " recipient list of replies, and will set the From address based on the\n"
    " address to which the original email was addressed.\n";

static const char maildir_config_comment[] =
    " Maildir compatibility configuration\n"
    "\n"
    " The following option is supported here:\n"
    "\n"
    "\tsynchronize_flags      Valid values are true and false.\n"
    "\n"
    "\tIf true, then the following maildir flags (in message filenames)\n"
    "\twill be synchronized with the corresponding notmuch tags:\n"
    "\n"
    "\t\tFlag	Tag\n"
    "\t\t----	-------\n"
    "\t\tD	draft\n"
    "\t\tF	flagged\n"
    "\t\tP	passed\n"
    "\t\tR	replied\n"
    "\t\tS	unread (added when 'S' flag is not present)\n"
    "\n"
    "\tThe \"notmuch new\" command will notice flag changes in filenames\n"
    "\tand update tags, while the \"notmuch tag\" and \"notmuch restore\"\n"
    "\tcommands will notice tag changes and update flags in filenames\n";

static const char search_config_comment[] =
    " Search configuration\n"
    "\n"
    " The following option is supported here:\n"
    "\n"
    "\texclude_tags\n"
    "\t\tA ;-separated list of tags that will be excluded from\n"
    "\t\tsearch results by default.  Using an excluded tag in a\n"
    "\t\tquery will override that exclusion.\n";

static const char crypto_config_comment[] =
    " Cryptography related configuration\n"
    "\n"
    " The following old option is now ignored:\n"
    "\n"
    "\tgpgpath\n"
    "\t\tThis option was used by older builds of notmuch to choose\n"
    "\t\tthe version of gpg to use.\n"
    "\t\tSetting $PATH is a better approach.\n";

struct _notmuch_config {
    char *filename;
    GKeyFile *key_file;
    bool is_new;

    char *database_path;
    char *user_name;
    char *user_primary_email;
    const char **user_other_email;
    size_t user_other_email_length;
    const char **new_tags;
    size_t new_tags_length;
    const char **new_ignore;
    size_t new_ignore_length;
    bool maildir_synchronize_flags;
    const char **search_exclude_tags;
    size_t search_exclude_tags_length;
};

static int
notmuch_config_destructor (notmuch_config_t *config)
{
    if (config->key_file)
	g_key_file_free (config->key_file);

    return 0;
}

static char *
get_name_from_passwd_file (void *ctx)
{
    long pw_buf_size;
    char *pw_buf;
    struct passwd passwd, *ignored;
    char *name;
    int e;

    pw_buf_size = sysconf (_SC_GETPW_R_SIZE_MAX);
    if (pw_buf_size == -1) pw_buf_size = 64;
    pw_buf = talloc_size (ctx, pw_buf_size);

    while ((e = getpwuid_r (getuid (), &passwd, pw_buf,
			    pw_buf_size, &ignored)) == ERANGE) {
	pw_buf_size = pw_buf_size * 2;
	pw_buf = talloc_zero_size (ctx, pw_buf_size);
    }

    if (e == 0) {
	char *comma = strchr (passwd.pw_gecos, ',');
	if (comma)
	    name = talloc_strndup (ctx, passwd.pw_gecos,
				   comma - passwd.pw_gecos);
	else
	    name = talloc_strdup (ctx, passwd.pw_gecos);
    } else {
	name = talloc_strdup (ctx, "");
    }

    talloc_free (pw_buf);

    return name;
}

static char *
get_username_from_passwd_file (void *ctx)
{
    long pw_buf_size;
    char *pw_buf;
    struct passwd passwd, *ignored;
    char *name;
    int e;

    pw_buf_size = sysconf (_SC_GETPW_R_SIZE_MAX);
    if (pw_buf_size == -1) pw_buf_size = 64;
    pw_buf = talloc_zero_size (ctx, pw_buf_size);

    while ((e = getpwuid_r (getuid (), &passwd, pw_buf,
			    pw_buf_size, &ignored)) == ERANGE) {
	pw_buf_size = pw_buf_size * 2;
	pw_buf = talloc_zero_size (ctx, pw_buf_size);
    }

    if (e == 0)
	name = talloc_strdup (ctx, passwd.pw_name);
    else
	name = talloc_strdup (ctx, "");

    talloc_free (pw_buf);

    return name;
}

static bool
get_config_from_file (notmuch_config_t *config, bool create_new)
{
    #define BUF_SIZE 4096
    char *config_str = NULL;
    int config_len = 0;
    int config_bufsize = BUF_SIZE;
    size_t len;
    GError *error = NULL;
    bool ret = false;

    FILE *fp = fopen (config->filename, "r");
    if (fp == NULL) {
	if (errno == ENOENT) {
	    /* If create_new is true, then the caller is prepared for a
	     * default configuration file in the case of FILE NOT FOUND.
	     */
	    if (create_new) {
		config->is_new = true;
		ret = true;
	    } else {
		fprintf (stderr, "Configuration file %s not found.\n"
			 "Try running 'notmuch setup' to create a configuration.\n",
			 config->filename);
	    }
	} else {
	    fprintf (stderr, "Error opening config file '%s': %s\n",
		     config->filename, strerror (errno));
	}
	goto out;
    }

    config_str = talloc_zero_array (config, char, config_bufsize);
    if (config_str == NULL) {
	fprintf (stderr, "Error reading '%s': Out of memory\n", config->filename);
	goto out;
    }

    while ((len = fread (config_str + config_len, 1,
			 config_bufsize - config_len, fp)) > 0) {
	config_len += len;
	if (config_len == config_bufsize) {
	    config_bufsize += BUF_SIZE;
	    config_str = talloc_realloc (config, config_str, char, config_bufsize);
	    if (config_str == NULL) {
		fprintf (stderr, "Error reading '%s': Failed to reallocate memory\n",
			 config->filename);
		goto out;
	    }
	}
    }

    if (ferror (fp)) {
	fprintf (stderr, "Error reading '%s': I/O error\n", config->filename);
	goto out;
    }

    if (g_key_file_load_from_data (config->key_file, config_str, config_len,
				   G_KEY_FILE_KEEP_COMMENTS, &error)) {
	ret = true;
	goto out;
    }

    fprintf (stderr, "Error parsing config file '%s': %s\n",
	     config->filename, error->message);

    g_error_free (error);

  out:
    if (fp)
	fclose (fp);

    if (config_str)
	talloc_free (config_str);

    return ret;
}

/* Open the named notmuch configuration file. If the filename is NULL,
 * the value of the environment variable $NOTMUCH_CONFIG will be used.
 * If $NOTMUCH_CONFIG is unset, the default configuration file
 * ($HOME/.notmuch-config) will be used.
 *
 * If any error occurs, (out of memory, or a permission-denied error,
 * etc.), this function will print a message to stderr and return
 * NULL.
 *
 * FILE NOT FOUND: When the specified configuration file (whether from
 * 'filename' or the $NOTMUCH_CONFIG environment variable) does not
 * exist, the behavior of this function depends on the 'is_new_ret'
 * variable.
 *
 *	If is_new_ret is NULL, then a "file not found" message will be
 *	printed to stderr and NULL will be returned.
 *
 *	If is_new_ret is non-NULL then a default configuration will be
 *	returned and *is_new_ret will be set to 1 on return so that
 *	the caller can recognize this case.
 *
 *	These default configuration settings are determined as
 *	follows:
 *
 *		database_path:		$MAILDIR, otherwise $HOME/mail
 *
 *		user_name:		$NAME variable if set, otherwise
 *					read from /etc/passwd
 *
 *		user_primary_mail:	$EMAIL variable if set, otherwise
 *					constructed from the username and
 *					hostname of the current machine.
 *
 *		user_other_email:	Not set.
 *
 *	The default configuration also contains comments to guide the
 *	user in editing the file directly.
 */
notmuch_config_t *
notmuch_config_open (void *ctx,
		     const char *filename,
		     notmuch_command_mode_t config_mode)
{
    GError *error = NULL;
    size_t tmp;
    char *notmuch_config_env = NULL;
    int file_had_database_group;
    int file_had_new_group;
    int file_had_user_group;
    int file_had_maildir_group;
    int file_had_search_group;
    int file_had_crypto_group;

    notmuch_config_t *config = talloc_zero (ctx, notmuch_config_t);

    if (config == NULL) {
	fprintf (stderr, "Out of memory.\n");
	return NULL;
    }

    talloc_set_destructor (config, notmuch_config_destructor);

    /* non-zero defaults */
    config->maildir_synchronize_flags = true;

    if (filename) {
	config->filename = talloc_strdup (config, filename);
    } else if ((notmuch_config_env = getenv ("NOTMUCH_CONFIG"))) {
	config->filename = talloc_strdup (config, notmuch_config_env);
    } else {
	config->filename = talloc_asprintf (config, "%s/.notmuch-config",
					    getenv ("HOME"));
    }

    config->key_file = g_key_file_new ();

    if (config_mode & NOTMUCH_COMMAND_CONFIG_OPEN) {
	bool create_new = (config_mode & NOTMUCH_COMMAND_CONFIG_CREATE) != 0;

	if (! get_config_from_file (config, create_new)) {
	    talloc_free (config);
	    return NULL;
	}
    }

    /* Whenever we know of configuration sections that don't appear in
     * the configuration file, we add some comments to help the user
     * understand what can be done.
     *
     * It would be convenient to just add those comments now, but
     * apparently g_key_file will clear any comments when keys are
     * added later that create the groups. So we have to check for the
     * groups now, but add the comments only after setting all of our
     * values.
     */
    file_had_database_group = g_key_file_has_group (config->key_file,
						    "database");
    file_had_new_group = g_key_file_has_group (config->key_file, "new");
    file_had_user_group = g_key_file_has_group (config->key_file, "user");
    file_had_maildir_group = g_key_file_has_group (config->key_file, "maildir");
    file_had_search_group = g_key_file_has_group (config->key_file, "search");
    file_had_crypto_group = g_key_file_has_group (config->key_file, "crypto");

    if (notmuch_config_get_database_path (config) == NULL) {
	char *path = getenv ("MAILDIR");
	if (path)
	    path = talloc_strdup (config, path);
	else
	    path = talloc_asprintf (config, "%s/mail",
				    getenv ("HOME"));
	notmuch_config_set_database_path (config, path);
	talloc_free (path);
    }

    if (notmuch_config_get_user_name (config) == NULL) {
	char *name = getenv ("NAME");
	if (name)
	    name = talloc_strdup (config, name);
	else
	    name = get_name_from_passwd_file (config);
	notmuch_config_set_user_name (config, name);
	talloc_free (name);
    }

    if (notmuch_config_get_user_primary_email (config) == NULL) {
	char *email = getenv ("EMAIL");
	if (email) {
	    notmuch_config_set_user_primary_email (config, email);
	} else {
	    char hostname[256];
	    struct hostent *hostent;
	    const char *domainname;

	    char *username = get_username_from_passwd_file (config);

	    gethostname (hostname, 256);
	    hostname[255] = '\0';

	    hostent = gethostbyname (hostname);
	    if (hostent && (domainname = strchr (hostent->h_name, '.')))
		domainname += 1;
	    else
		domainname = "(none)";

	    email = talloc_asprintf (config, "%s@%s.%s",
				     username, hostname, domainname);

	    notmuch_config_set_user_primary_email (config, email);

	    talloc_free (username);
	    talloc_free (email);
	}
    }

    if (notmuch_config_get_new_tags (config, &tmp) == NULL) {
	const char *tags[] = { "unread", "inbox" };
	notmuch_config_set_new_tags (config, tags, 2);
    }

    if (notmuch_config_get_new_ignore (config, &tmp) == NULL) {
	notmuch_config_set_new_ignore (config, NULL, 0);
    }

    if (notmuch_config_get_search_exclude_tags (config, &tmp) == NULL) {
	if (config->is_new) {
	    const char *tags[] = { "deleted", "spam" };
	    notmuch_config_set_search_exclude_tags (config, tags, 2);
	} else {
	    notmuch_config_set_search_exclude_tags (config, NULL, 0);
	}
    }

    error = NULL;
    config->maildir_synchronize_flags =
	g_key_file_get_boolean (config->key_file,
				"maildir", "synchronize_flags", &error);
    if (error) {
	notmuch_config_set_maildir_synchronize_flags (config, true);
	g_error_free (error);
    }

    /* Whenever we know of configuration sections that don't appear in
     * the configuration file, we add some comments to help the user
     * understand what can be done. */
    if (config->is_new)
	g_key_file_set_comment (config->key_file, NULL, NULL,
				toplevel_config_comment, NULL);

    if (! file_had_database_group)
	g_key_file_set_comment (config->key_file, "database", NULL,
				database_config_comment, NULL);

    if (! file_had_new_group)
	g_key_file_set_comment (config->key_file, "new", NULL,
				new_config_comment, NULL);

    if (! file_had_user_group)
	g_key_file_set_comment (config->key_file, "user", NULL,
				user_config_comment, NULL);

    if (! file_had_maildir_group)
	g_key_file_set_comment (config->key_file, "maildir", NULL,
				maildir_config_comment, NULL);

    if (! file_had_search_group)
	g_key_file_set_comment (config->key_file, "search", NULL,
				search_config_comment, NULL);

    if (! file_had_crypto_group)
	g_key_file_set_comment (config->key_file, "crypto", NULL,
				crypto_config_comment, NULL);

    return config;
}

/* Close the given notmuch_config_t object, freeing all resources.
 *
 * Note: Any changes made to the configuration are *not* saved by this
 * function. To save changes, call notmuch_config_save before
 * notmuch_config_close.
 */
void
notmuch_config_close (notmuch_config_t *config)
{
    talloc_free (config);
}

const char *
_notmuch_config_get_path (notmuch_config_t *config)
{
    return config->filename;
}
/* Save any changes made to the notmuch configuration.
 *
 * Any comments originally in the file will be preserved.
 *
 * Returns 0 if successful, and 1 in case of any error, (after
 * printing a description of the error to stderr).
 */
int
notmuch_config_save (notmuch_config_t *config)
{
    size_t length;
    char *data, *filename;
    GError *error = NULL;

    data = g_key_file_to_data (config->key_file, &length, NULL);
    if (data == NULL) {
	fprintf (stderr, "Out of memory.\n");
	return 1;
    }

    /* Try not to overwrite symlinks. */
    filename = canonicalize_file_name (config->filename);
    if (! filename) {
	if (errno == ENOENT) {
	    filename = strdup (config->filename);
	    if (! filename) {
		fprintf (stderr, "Out of memory.\n");
		g_free (data);
		return 1;
	    }
	} else {
	    fprintf (stderr, "Error canonicalizing %s: %s\n", config->filename,
		     strerror (errno));
	    g_free (data);
	    return 1;
	}
    }

    if (! g_file_set_contents (filename, data, length, &error)) {
	if (strcmp (filename, config->filename) != 0) {
	    fprintf (stderr, "Error saving configuration to %s (-> %s): %s\n",
		     config->filename, filename, error->message);
	} else {
	    fprintf (stderr, "Error saving configuration to %s: %s\n",
		     filename, error->message);
	}
	g_error_free (error);
	free (filename);
	g_free (data);
	return 1;
    }

    free (filename);
    g_free (data);
    return 0;
}

bool
notmuch_config_is_new (notmuch_config_t *config)
{
    return config->is_new;
}

static const char *
_config_get (notmuch_config_t *config, char **field,
	     const char *group, const char *key)
{
    /* read from config file and cache value, if not cached already */
    if (*field == NULL) {
	char *value;
	value = g_key_file_get_string (config->key_file, group, key, NULL);
	if (value) {
	    *field = talloc_strdup (config, value);
	    free (value);
	}
    }
    return *field;
}

static void
_config_set (notmuch_config_t *config, char **field,
	     const char *group, const char *key, const char *value)
{
    g_key_file_set_string (config->key_file, group, key, value);

    /* drop the cached value */
    talloc_free (*field);
    *field = NULL;
}

static const char **
_config_get_list (notmuch_config_t *config,
		  const char *section, const char *key,
		  const char ***outlist, size_t *list_length, size_t *ret_length)
{
    assert (outlist);

    /* read from config file and cache value, if not cached already */
    if (*outlist == NULL) {

	char **inlist = g_key_file_get_string_list (config->key_file,
						    section, key, list_length, NULL);
	if (inlist) {
	    unsigned int i;

	    *outlist = talloc_size (config, sizeof (char *) * (*list_length + 1));

	    for (i = 0; i < *list_length; i++)
		(*outlist)[i] = talloc_strdup (*outlist, inlist[i]);

	    (*outlist)[i] = NULL;

	    g_strfreev (inlist);
	}
    }

    if (ret_length)
	*ret_length = *list_length;

    return *outlist;
}

static void
_config_set_list (notmuch_config_t *config,
		  const char *group, const char *key,
		  const char *list[],
		  size_t length, const char ***config_var )
{
    g_key_file_set_string_list (config->key_file, group, key, list, length);

    /* drop the cached value */
    talloc_free (*config_var);
    *config_var = NULL;
}

const char *
notmuch_config_get_database_path (notmuch_config_t *config)
{
    char *db_path = (char *) _config_get (config, &config->database_path, "database", "path");

    if (db_path && *db_path != '/') {
	/* If the path in the configuration file begins with any
	 * character other than /, presume that it is relative to
	 * $HOME and update as appropriate.
	 */
	char *abs_path = talloc_asprintf (config, "%s/%s", getenv ("HOME"), db_path);
	talloc_free (db_path);
	db_path = config->database_path = abs_path;
    }

    return db_path;
}

void
notmuch_config_set_database_path (notmuch_config_t *config,
				  const char *database_path)
{
    _config_set (config, &config->database_path, "database", "path", database_path);
}

const char *
notmuch_config_get_user_name (notmuch_config_t *config)
{
    return _config_get (config, &config->user_name, "user", "name");
}

void
notmuch_config_set_user_name (notmuch_config_t *config,
			      const char *user_name)
{
    _config_set (config, &config->user_name, "user", "name", user_name);
}

const char *
notmuch_config_get_user_primary_email (notmuch_config_t *config)
{
    return _config_get (config, &config->user_primary_email, "user", "primary_email");
}

void
notmuch_config_set_user_primary_email (notmuch_config_t *config,
				       const char *primary_email)
{
    _config_set (config, &config->user_primary_email, "user", "primary_email", primary_email);
}

const char **
notmuch_config_get_user_other_email (notmuch_config_t *config,   size_t *length)
{
    return _config_get_list (config, "user", "other_email",
			     &(config->user_other_email),
			     &(config->user_other_email_length), length);
}

const char **
notmuch_config_get_new_tags (notmuch_config_t *config,   size_t *length)
{
    return _config_get_list (config, "new", "tags",
			     &(config->new_tags),
			     &(config->new_tags_length), length);
}

const char **
notmuch_config_get_new_ignore (notmuch_config_t *config, size_t *length)
{
    return _config_get_list (config, "new", "ignore",
			     &(config->new_ignore),
			     &(config->new_ignore_length), length);
}

void
notmuch_config_set_user_other_email (notmuch_config_t *config,
				     const char *list[],
				     size_t length)
{
    _config_set_list (config, "user", "other_email", list, length,
		      &(config->user_other_email));
}

void
notmuch_config_set_new_tags (notmuch_config_t *config,
			     const char *list[],
			     size_t length)
{
    _config_set_list (config, "new", "tags", list, length,
		      &(config->new_tags));
}

void
notmuch_config_set_new_ignore (notmuch_config_t *config,
			       const char *list[],
			       size_t length)
{
    _config_set_list (config, "new", "ignore", list, length,
		      &(config->new_ignore));
}

const char **
notmuch_config_get_search_exclude_tags (notmuch_config_t *config, size_t *length)
{
    return _config_get_list (config, "search", "exclude_tags",
			     &(config->search_exclude_tags),
			     &(config->search_exclude_tags_length), length);
}

void
notmuch_config_set_search_exclude_tags (notmuch_config_t *config,
					const char *list[],
					size_t length)
{
    _config_set_list (config, "search", "exclude_tags", list, length,
		      &(config->search_exclude_tags));
}


/* Given a configuration item of the form <group>.<key> return the
 * component group and key. If any error occurs, print a message on
 * stderr and return 1. Otherwise, return 0.
 *
 * Note: This function modifies the original 'item' string.
 */
static int
_item_split (char *item, char **group, char **key)
{
    char *period;

    *group = item;

    period = strchr (item, '.');
    if (period == NULL || *(period + 1) == '\0') {
	fprintf (stderr,
		 "Invalid configuration name: %s\n"
		 "(Should be of the form <section>.<item>)\n", item);
	return 1;
    }

    *period = '\0';
    *key = period + 1;

    return 0;
}

/* These are more properly called Xapian fields, but the user facing
 * docs call them prefixes, so make the error message match */
static bool
validate_field_name (const char *str)
{
    const char *key;

    if (! g_utf8_validate (str, -1, NULL)) {
	fprintf (stderr, "Invalid utf8: %s\n", str);
	return false;
    }

    key = g_utf8_strrchr (str, -1, '.');
    if (! key ) {
	INTERNAL_ERROR ("Impossible code path on input: %s\n", str);
    }

    key++;

    if (! *key) {
	fprintf (stderr, "Empty prefix name: %s\n", str);
	return false;
    }

    if (! unicode_word_utf8 (key)) {
	fprintf (stderr, "Non-word character in prefix name: %s\n", key);
	return false;
    }

    if (key[0] >= 'a' && key[0] <= 'z') {
	fprintf (stderr, "Prefix names starting with lower case letters are reserved: %s\n", key);
	return false;
    }

    return true;
}

#define BUILT_WITH_PREFIX "built_with."

typedef struct config_key {
    const char *name;
    bool in_db;
    bool prefix;
    bool (*validate)(const char *);
} config_key_info_t;

static struct config_key
    config_key_table[] = {
    { "index.decrypt",   true,   false,  NULL },
    { "index.header.",   true,   true,   validate_field_name },
    { "query.",          true,   true,   NULL },
};

static config_key_info_t *
_config_key_info (const char *item)
{
    for (size_t i = 0; i < ARRAY_SIZE (config_key_table); i++) {
	if (config_key_table[i].prefix &&
	    strncmp (item, config_key_table[i].name,
		     strlen (config_key_table[i].name)) == 0)
	    return config_key_table + i;
	if (strcmp (item, config_key_table[i].name) == 0)
	    return config_key_table + i;
    }
    return NULL;
}

static int
notmuch_config_command_get (notmuch_database_t *notmuch, char *item)
{
    notmuch_config_values_t *list;

    for (list = notmuch_config_get_values_string (notmuch, item);
	 notmuch_config_values_valid (list);
	 notmuch_config_values_move_to_next (list)) {
	const char *val = notmuch_config_values_get (list);
	puts (val);
    }
    return EXIT_SUCCESS;
}

static int
_set_db_config (notmuch_config_t *config, const char *key, int argc, char **argv)
{
    notmuch_database_t *notmuch;
    const char *val = "";

    if (argc > 1) {
	/* XXX handle lists? */
	fprintf (stderr, "notmuch config set: at most one value expected for %s\n", key);
	return EXIT_FAILURE;
    }

    if (argc > 0) {
	val = argv[0];
    }

    if (notmuch_database_open (notmuch_config_get_database_path (config),
			       NOTMUCH_DATABASE_MODE_READ_WRITE, &notmuch))
	return EXIT_FAILURE;

    /* XXX Handle UUID mismatch? */

    if (print_status_database ("notmuch config", notmuch,
			       notmuch_database_set_config (notmuch, key, val)))
	return EXIT_FAILURE;

    if (print_status_database ("notmuch config", notmuch,
			       notmuch_database_close (notmuch)))
	return EXIT_FAILURE;

    return EXIT_SUCCESS;
}

static int
notmuch_config_command_set (notmuch_config_t *config, char *item, int argc, char *argv[])
{
    char *group, *key;
    config_key_info_t *key_info;

    if (STRNCMP_LITERAL (item, BUILT_WITH_PREFIX) == 0) {
	fprintf (stderr, "Error: read only option: %s\n", item);
	return 1;
    }

    key_info = _config_key_info (item);
    if (key_info && key_info->validate && (! key_info->validate (item)))
	return 1;

    if (key_info && key_info->in_db) {
	return _set_db_config (config, item, argc, argv);
    }

    if (_item_split (item, &group, &key))
	return 1;

    /* With only the name of an item, we clear it from the
     * configuration file.
     *
     * With a single value, we set it as a string.
     *
     * With multiple values, we set them as a string list.
     */
    switch (argc) {
    case 0:
	g_key_file_remove_key (config->key_file, group, key, NULL);
	break;
    case 1:
	g_key_file_set_string (config->key_file, group, key, argv[0]);
	break;
    default:
	g_key_file_set_string_list (config->key_file, group, key,
				    (const gchar **) argv, argc);
	break;
    }

    return notmuch_config_save (config);
}

static
void
_notmuch_config_list_built_with ()
{
    printf ("%scompact=%s\n",
	    BUILT_WITH_PREFIX,
	    notmuch_built_with ("compact") ? "true" : "false");
    printf ("%sfield_processor=%s\n",
	    BUILT_WITH_PREFIX,
	    notmuch_built_with ("field_processor") ? "true" : "false");
    printf ("%sretry_lock=%s\n",
	    BUILT_WITH_PREFIX,
	    notmuch_built_with ("retry_lock") ? "true" : "false");
}

static int
_list_db_config (notmuch_config_t *config)
{
    notmuch_database_t *notmuch;
    notmuch_config_list_t *list;

    if (notmuch_database_open (notmuch_config_get_database_path (config),
			       NOTMUCH_DATABASE_MODE_READ_ONLY, &notmuch))
	return EXIT_FAILURE;

    /* XXX Handle UUID mismatch? */


    if (print_status_database ("notmuch config", notmuch,
			       notmuch_database_get_config_list (notmuch, "", &list)))
	return EXIT_FAILURE;

    for (; notmuch_config_list_valid (list); notmuch_config_list_move_to_next (list)) {
	printf ("%s=%s\n", notmuch_config_list_key (list), notmuch_config_list_value (list));
    }
    notmuch_config_list_destroy (list);

    return EXIT_SUCCESS;
}

static int
notmuch_config_command_list (notmuch_config_t *config)
{
    char **groups;
    size_t g, groups_length;

    groups = g_key_file_get_groups (config->key_file, &groups_length);
    if (groups == NULL)
	return 1;

    for (g = 0; g < groups_length; g++) {
	char **keys;
	size_t k, keys_length;

	keys = g_key_file_get_keys (config->key_file,
				    groups[g], &keys_length, NULL);
	if (keys == NULL)
	    continue;

	for (k = 0; k < keys_length; k++) {
	    char *value;

	    value = g_key_file_get_string (config->key_file,
					   groups[g], keys[k], NULL);
	    if (value != NULL) {
		printf ("%s.%s=%s\n", groups[g], keys[k], value);
		free (value);
	    }
	}

	g_strfreev (keys);
    }

    g_strfreev (groups);

    _notmuch_config_list_built_with ();
    return _list_db_config (config);
}

int
notmuch_config_command (notmuch_config_t *config, notmuch_database_t *notmuch,
			int argc, char *argv[])
{
    int ret;
    int opt_index;

    opt_index = notmuch_minimal_options ("config", argc, argv);
    if (opt_index < 0)
	return EXIT_FAILURE;

    if (notmuch_requested_db_uuid)
	fprintf (stderr, "Warning: ignoring --uuid=%s\n",
		 notmuch_requested_db_uuid);

    /* skip at least subcommand argument */
    argc -= opt_index;
    argv += opt_index;

    if (argc < 1) {
	fprintf (stderr, "Error: notmuch config requires at least one argument.\n");
	return EXIT_FAILURE;
    }

    if (strcmp (argv[0], "get") == 0) {
	if (argc != 2) {
	    fprintf (stderr, "Error: notmuch config get requires exactly "
		     "one argument.\n");
	    return EXIT_FAILURE;
	}
	ret = notmuch_config_command_get (notmuch, argv[1]);
    } else if (strcmp (argv[0], "set") == 0) {
	if (argc < 2) {
	    fprintf (stderr, "Error: notmuch config set requires at least "
		     "one argument.\n");
	    return EXIT_FAILURE;
	}
	ret = notmuch_config_command_set (config, argv[1], argc - 2, argv + 2);
    } else if (strcmp (argv[0], "list") == 0) {
	ret = notmuch_config_command_list (config);
    } else {
	fprintf (stderr, "Unrecognized argument for notmuch config: %s\n",
		 argv[0]);
	return EXIT_FAILURE;
    }

    return ret ? EXIT_FAILURE : EXIT_SUCCESS;

}

bool
notmuch_config_get_maildir_synchronize_flags (notmuch_config_t *config)
{
    return config->maildir_synchronize_flags;
}

void
notmuch_config_set_maildir_synchronize_flags (notmuch_config_t *config,
					      bool synchronize_flags)
{
    g_key_file_set_boolean (config->key_file,
			    "maildir", "synchronize_flags", synchronize_flags);
    config->maildir_synchronize_flags = synchronize_flags;
}

debug log:

solving 50008f78 ...
found 50008f78 in https://yhetil.org/notmuch.git/

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://yhetil.org/notmuch.git/

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).