unofficial mirror of bug-gnu-emacs@gnu.org 
 help / color / mirror / code / Atom feed
blob 6919738398214e015772b27d2a094f7e4304f796 107314 bytes (raw)
name: lisp/auth-source.el 	 # 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
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
 
;;; auth-source.el --- authentication sources for Gnus and Emacs -*- lexical-binding: t -*-

;; Copyright (C) 2008-2021 Free Software Foundation, Inc.

;; Author: Ted Zlatanov <tzz@lifelogs.com>
;; Keywords: news

;; This file is part of GNU Emacs.

;; GNU Emacs 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.

;; GNU Emacs 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 GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;; This is the auth-source.el package.  It lets users tell Gnus how to
;; authenticate in a single place.  Simplicity is the goal.  Instead
;; of providing 5000 options, we'll stick to simple, easy to
;; understand options.

;; See the auth.info Info documentation for details.

;; TODO:

;; - never decode the backend file unless it's necessary
;; - a more generic way to match backends and search backend contents
;; - absorb netrc.el and simplify it
;; - protect passwords better
;; - allow creating and changing netrc lines (not files) e.g. change a password

;;; Code:

(require 'json)
(require 'password-cache)

(require 'cl-lib)
(require 'eieio)

(autoload 'secrets-create-item "secrets")
(autoload 'secrets-delete-item "secrets")
(autoload 'secrets-get-alias "secrets")
(autoload 'secrets-get-attributes "secrets")
(autoload 'secrets-get-secret "secrets")
(autoload 'secrets-list-collections "secrets")
(autoload 'secrets-search-items "secrets")

(autoload 'rfc2104-hash "rfc2104")

(autoload 'plstore-open "plstore")
(autoload 'plstore-find "plstore")
(autoload 'plstore-put "plstore")
(autoload 'plstore-delete "plstore")
(autoload 'plstore-save "plstore")
(autoload 'plstore-get-file "plstore")

(eval-when-compile (require 'epg)) ;; setf-method for `epg-context-armor'
(autoload 'epg-make-context "epg")
(autoload 'epg-context-set-passphrase-callback "epg")
(autoload 'epg-decrypt-string "epg")
(autoload 'epg-encrypt-string "epg")

(autoload 'help-mode "help-mode" nil t)

(defvar secrets-enabled)

(defgroup auth-source nil
  "Authentication sources."
  :version "23.1" ;; No Gnus
  :group 'gnus)

;;;###autoload
(defcustom auth-source-cache-expiry 7200
  "How many seconds passwords are cached, or nil to disable
expiring.  Overrides `password-cache-expiry' through a
let-binding."
  :version "24.1"
  :type '(choice (const :tag "Never" nil)
                 (const :tag "All Day" 86400)
                 (const :tag "2 Hours" 7200)
                 (const :tag "30 Minutes" 1800)
                 (integer :tag "Seconds")))

;; The slots below correspond with the `auth-source-search' spec,
;; so a backend with :host set, for instance, would match only
;; searches for that host.  Normally they are nil.
(defclass auth-source-backend ()
  ((type :initarg :type
         :initform 'netrc
         :type symbol
         :custom symbol
         :documentation "The backend type.")
   (source :initarg :source
           :type string
           :custom string
           :documentation "The backend source.")
   (host :initarg :host
         :initform t
         :type t
         :custom string
         :documentation "The backend host.")
   (user :initarg :user
         :initform t
         :type t
         :custom string
         :documentation "The backend user.")
   (port :initarg :port
         :initform t
         :type t
         :custom string
         :documentation "The backend protocol.")
   (data :initarg :data
         :initform nil
         :documentation "Internal backend data.")
   (create-function :initarg :create-function
                    :initform #'ignore
                    :type function
                    :custom function
                    :documentation "The create function.")
   (search-function :initarg :search-function
                    :initform #'ignore
                    :type function
                    :custom function
                    :documentation "The search function.")))

(defcustom auth-source-protocols '((imap "imap" "imaps" "143" "993")
                                   (pop3 "pop3" "pop" "pop3s" "110" "995")
                                   (ssh  "ssh" "22")
                                   (sftp "sftp" "115")
                                   (smtp "smtp" "25"))
  "List of authentication protocols and their names."

  :version "23.2" ;; No Gnus
  :type '(repeat :tag "Authentication Protocols"
                 (cons :tag "Protocol Entry"
                       (symbol :tag "Protocol")
                       (repeat :tag "Names"
                               (string :tag "Name")))))

;; Generate all the protocols in a format Customize can use.
;; TODO: generate on the fly from auth-source-protocols
(defconst auth-source-protocols-customize
  (mapcar (lambda (a)
            (let ((p (car-safe a)))
              (list 'const
                    :tag (upcase (symbol-name p))
                    p)))
          auth-source-protocols))

(defvar auth-source-creation-defaults nil
  ;; FIXME: AFAICT this is not set (or let-bound) anywhere!
  "Defaults for creating token values.  Usually let-bound.")

(defvar auth-source-creation-prompts nil
  "Default prompts for token values.  Usually let-bound.")

(make-obsolete 'auth-source-hide-passwords nil "24.1")

(defcustom auth-source-save-behavior 'ask
  "If set, auth-source will respect it for save behavior."
  :version "23.2" ;; No Gnus
  :type '(choice
          :tag "auth-source new token save behavior"
          (const :tag "Always save" t)
          (const :tag "Never save" nil)
          (const :tag "Ask" ask)))

;; TODO: make the default (setq auth-source-netrc-use-gpg-tokens `((,(if (boundp 'epa-file-auto-mode-alist-entry) (car epa-file-auto-mode-alist-entry) "\\.gpg\\'") never) (t gpg)))
;; TODO: or maybe leave as (setq auth-source-netrc-use-gpg-tokens 'never)

(defcustom auth-source-netrc-use-gpg-tokens 'never
  "Set this to tell auth-source when to create GPG password
tokens in netrc files.  It's either an alist or `never'.
Note that if EPA/EPG is not available, this should NOT be used."
  :version "23.2" ;; No Gnus
  :type `(choice
          (const :tag "Always use GPG password tokens" (t gpg))
          (const :tag "Never use GPG password tokens" never)
          (repeat :tag "Use a lookup list"
                  (list
                   (choice :tag "Matcher"
                           (const :tag "Match anything" t)
                           (const :tag "The EPA encrypted file extensions"
                                  ,(if (boundp 'epa-file-auto-mode-alist-entry)
                                       (car epa-file-auto-mode-alist-entry)
                                     "\\.gpg\\'"))
                           (regexp :tag "Regular expression"))
                   (choice :tag "What to do"
                           (const :tag "Save GPG-encrypted password tokens" gpg)
                           (const :tag "Don't encrypt tokens" never))))))

(defcustom auth-source-do-cache t
  "Whether auth-source should cache information with `password-cache'."
  :version "23.2" ;; No Gnus
  :type 'boolean)

(defcustom auth-source-debug nil
  "Whether auth-source should log debug messages.

If the value is nil, debug messages are not logged.

If the value is t, debug messages are logged with `message'.  In
that case, your authentication data will be in the clear (except
for passwords).

If the value is a function, debug messages are logged by calling
 that function using the same arguments as `message'."
  :version "23.2" ;; No Gnus
  :type '(choice
          :tag "auth-source debugging mode"
          (const :tag "Log using `message' to the *Messages* buffer" t)
          (const :tag "Log all trivia with `message' to the *Messages* buffer"
                 trivia)
          (function :tag "Function that takes arguments like `message'")
          (const :tag "Don't log anything" nil)))

(defcustom auth-sources '("~/.authinfo" "~/.authinfo.gpg" "~/.netrc")
  "List of authentication sources.
Each entry is the authentication type with optional properties.
Entries are tried in the order in which they appear.
See Info node `(auth)Help for users' for details.

If an entry names a file with the \".gpg\" extension and you have
EPA/EPG set up, the file will be encrypted and decrypted
automatically.  See Info node `(epa)Encrypting/decrypting gpg files'
for details.

It's best to customize this with `\\[customize-variable]' because the choices
can get pretty complex."
  :version "26.1" ; neither new nor changed default
  :type `(repeat :tag "Authentication Sources"
                 (choice
                  (string :tag "Just a file")
                  (const :tag "Default Secrets API Collection" default)
                  (const :tag "Login Secrets API Collection" "secrets:Login")
                  (const :tag "Temp Secrets API Collection" "secrets:session")

                  (const :tag "Default internet Mac OS Keychain"
                         macos-keychain-internet)

                  (const :tag "Default generic Mac OS Keychain"
                         macos-keychain-generic)

                  (list :tag "Source definition"
                        (const :format "" :value :source)
                        (choice :tag "Authentication backend choice"
                                (string :tag "Authentication Source (file)")
                                (list
                                 :tag "Secret Service API/KWallet/GNOME Keyring"
                                 (const :format "" :value :secrets)
                                 (choice :tag "Collection to use"
                                         (string :tag "Collection name")
                                         (const :tag "Default" default)
                                         (const :tag "Login" "Login")
                                         (const
                                          :tag "Temporary" "session")))
                                (list
                                 :tag "Mac OS internet Keychain"
                                 (const :format ""
                                        :value :macos-keychain-internet)
                                 (choice :tag "Collection to use"
                                         (string :tag "internet Keychain path")
                                         (const :tag "default" default)))
                                (list
                                 :tag "Mac OS generic Keychain"
                                 (const :format ""
                                        :value :macos-keychain-generic)
                                 (choice :tag "Collection to use"
                                         (string :tag "generic Keychain path")
                                         (const :tag "default" default))))
                        (repeat :tag "Extra Parameters" :inline t
                                (choice :tag "Extra parameter"
                                        (list
                                         :tag "Host"
                                         (const :format "" :value :host)
                                         (choice :tag "Host (machine) choice"
                                                 (const :tag "Any" t)
                                                 (regexp
                                                  :tag "Regular expression")))
                                        (list
                                         :tag "Protocol"
                                         (const :format "" :value :port)
                                         (choice
                                          :tag "Protocol"
                                          (const :tag "Any" t)
                                          ,@auth-source-protocols-customize))
                                        (list :tag "User" :inline t
                                              (const :format "" :value :user)
                                              (choice
                                               :tag "Personality/Username"
                                               (const :tag "Any" t)
                                               (string
                                                :tag "Name"))))))
                  (sexp :tag "A data structure (external provider)"))))

(defcustom auth-source-gpg-encrypt-to t
  "List of recipient keys that `authinfo.gpg' encrypted to.
If the value is not a list, symmetric encryption will be used."
  :version "24.1" ;; No Gnus
  :type '(choice (const :tag "Symmetric encryption" t)
                 (repeat :tag "Recipient public keys"
                         (string :tag "Recipient public key"))))

(defun auth-source-do-debug (&rest msg)
  (when auth-source-debug
    (apply #'auth-source-do-warn msg)))

(defun auth-source-do-trivia (&rest msg)
  (when (or (eq auth-source-debug 'trivia)
            (functionp auth-source-debug))
    (apply #'auth-source-do-warn msg)))

(defun auth-source-do-warn (&rest msg)
  (apply
   ;; set logger to either the function in auth-source-debug or 'message
   ;; note that it will be 'message if auth-source-debug is nil
   (if (functionp auth-source-debug)
       auth-source-debug
     'message)
   msg))

(defun auth-source-read-char-choice (prompt choices)
  "Read one of CHOICES by `read-char-choice', or `read-char'.
`dropdown-list' support is disabled because it doesn't work reliably.
Only one of CHOICES will be returned.  The PROMPT is augmented
with \"[a/b/c] \" if CHOICES is \(?a ?b ?c)."
  (when choices
    (let* ((prompt-choices
            (apply #'concat
                   (cl-loop for c in choices collect (format "%c/" c))))
           (prompt-choices (concat "[" (substring prompt-choices 0 -1) "] "))
           (full-prompt (concat prompt prompt-choices))
           k)

      (while (not (memq k choices))
        (setq k (read-char-choice full-prompt choices)))
      k)))

(defvar auth-source-backend-parser-functions nil
  "List of auth-source parser functions.
Each function takes an entry from `auth-sources' as parameter and
returns a backend or nil if the entry is not supported.  Add a
parser function to this list with `add-hook'.  Searching for a
backend starts with the first element on the list and stops as
soon as a function returns non-nil.")

(defun auth-source-backend-parse (entry)
  "Create an auth-source-backend from an ENTRY in `auth-sources'."

  (let ((backend
         (run-hook-with-args-until-success 'auth-source-backend-parser-functions
                                           entry)))

    (unless backend
      ;; none of the parsers worked
      (auth-source-do-warn
       "auth-source-backend-parse: invalid backend spec: %S" entry)
      (setq backend (make-instance 'auth-source-backend
                                   :source ""
                                   :type 'ignore)))
    (auth-source-backend-parse-parameters entry backend)))

(defun auth-source-backends-parser-file (entry)
  ;; take just a file name use it as a netrc/plist file
  ;; matching any user, host, and protocol
  (when (stringp entry)
    (setq entry (list :source entry)))
  (let* ((source (plist-get entry :source))
         (source-without-gpg
          (if (and (stringp source)
                   (equal (file-name-extension source) "gpg"))
              (file-name-sans-extension source)
            (or source "")))
         (extension (or (and (stringp source-without-gpg)
                             (file-name-extension source-without-gpg))
                        "")))
    (when (stringp source)
      (cond
       ((equal extension "plist")
        (auth-source-backend
         source
         :source source
         :type 'plstore
         :search-function #'auth-source-plstore-search
         :create-function #'auth-source-plstore-create
         :data (plstore-open source)))
       ((member-ignore-case extension '("json"))
        (auth-source-backend
         source
         :source source
         :type 'json
         :search-function #'auth-source-json-search))
       (t
        (auth-source-backend
         source
         :source source
         :type 'netrc
         :search-function #'auth-source-netrc-search
         :create-function #'auth-source-netrc-create))))))

;; Note this function should be last in the parser functions, so we add it first
(add-hook 'auth-source-backend-parser-functions #'auth-source-backends-parser-file)

(defun auth-source-backends-parser-macos-keychain (entry)
  ;; take macos-keychain-{internet,generic}:XYZ and use it as macOS
  ;; Keychain "XYZ" matching any user, host, and protocol
  (when (and (stringp entry) (string-match "^macos-keychain-internet:\\(.+\\)"
                                           entry))
    (setq entry `(:source (:macos-keychain-internet
                           ,(match-string 1 entry)))))
  (when (and (stringp entry) (string-match "^macos-keychain-generic:\\(.+\\)"
                                           entry))
    (setq entry `(:source (:macos-keychain-generic
                           ,(match-string 1 entry)))))
  ;; take 'macos-keychain-internet or generic and use it as a Mac OS
  ;; Keychain collection matching any user, host, and protocol
  (when (eq entry 'macos-keychain-internet)
    (setq entry '(:source (:macos-keychain-internet default))))
  (when (eq entry 'macos-keychain-generic)
    (setq entry '(:source (:macos-keychain-generic default))))
  (cond
   ;; the macOS Keychain
   ((and
     (not (null (plist-get entry :source))) ; the source must not be nil
     (listp (plist-get entry :source))      ; and it must be a list
     (or
      (plist-get (plist-get entry :source) :macos-keychain-generic)
      (plist-get (plist-get entry :source) :macos-keychain-internet)))

    (let* ((source-spec (plist-get entry :source))
           (keychain-generic (plist-get source-spec :macos-keychain-generic))
           (keychain-type (if keychain-generic
                              'macos-keychain-generic
                            'macos-keychain-internet))
           (source (plist-get source-spec (if keychain-generic
                                              :macos-keychain-generic
                                            :macos-keychain-internet))))

      (when (symbolp source)
        (setq source (symbol-name source)))

      (auth-source-backend
       (format "Mac OS Keychain (%s)" source)
       :source source
       :type keychain-type
       :search-function #'auth-source-macos-keychain-search
       :create-function #'auth-source-macos-keychain-create)))))

(add-hook 'auth-source-backend-parser-functions #'auth-source-backends-parser-macos-keychain)

(defun auth-source-backends-parser-secrets (entry)
  ;; take secrets:XYZ and use it as Secrets API collection "XYZ"
  ;; matching any user, host, and protocol
  (when (and (stringp entry) (string-match "^secrets:\\(.+\\)" entry))
    (setq entry `(:source (:secrets ,(match-string 1 entry)))))
  ;; take 'default and use it as a Secrets API default collection
  ;; matching any user, host, and protocol
  (when (eq entry 'default)
    (setq entry '(:source (:secrets default))))
  (cond
   ;; the Secrets API.  We require the package, in order to have a
   ;; defined value for `secrets-enabled'.
   ((and
     (not (null (plist-get entry :source))) ; the source must not be nil
     (listp (plist-get entry :source))      ; and it must be a list
     (not (null (plist-get
                 (plist-get entry :source)
                 :secrets))) ; the source must have :secrets
     (require 'secrets nil t)               ; and we must load the Secrets API
     secrets-enabled)                       ; and that API must be enabled

    ;; the source is either the :secrets key in ENTRY or
    ;; if that's missing or nil, it's "session"
    (let ((source (plist-get (plist-get entry :source) :secrets)))

      ;; if the source is a symbol, we look for the alias named so,
      ;; and if that alias is missing, we use "Login"
      (when (symbolp source)
        (setq source (or (secrets-get-alias (symbol-name source))
                         "Login")))

      (if (featurep 'secrets)
          (auth-source-backend
           (format "Secrets API (%s)" source)
           :source source
           :type 'secrets
           :search-function #'auth-source-secrets-search
           :create-function #'auth-source-secrets-create)
        (auth-source-do-warn
         "auth-source-backend-parse: no Secrets API, ignoring spec: %S" entry)
        (auth-source-backend
         (format "Ignored Secrets API (%s)" source)
         :source ""
         :type 'ignore))))))

(add-hook 'auth-source-backend-parser-functions #'auth-source-backends-parser-secrets)

(defun auth-source-backend-parse-parameters (entry backend)
  "Fill in the extra auth-source-backend parameters of ENTRY.
Using the plist ENTRY, get the :host, :port, and :user search
parameters."
  (let ((entry (if (stringp entry)
                   nil
                 entry))
        val)
    (when (setq val (plist-get entry :host))
      (oset backend host val))
    (when (setq val (plist-get entry :user))
      (oset backend user val))
    (when (setq val (plist-get entry :port))
      (oset backend port val)))
  backend)

;; (mapcar #'auth-source-backend-parse auth-sources)

(cl-defun auth-source-search (&rest spec
                              &key max require create delete
                              &allow-other-keys)
  "Search or modify authentication backends according to SPEC.

This function parses `auth-sources' for matches of the SPEC
plist.  It can optionally create or update an authentication
token if requested.  A token is just a standard Emacs property
list with a :secret property that can be a function; all the
other properties will always hold scalar values.

Typically the :secret property, if present, contains a password.

Common search keys are :max, :host, :port, and :user.  In
addition, :create specifies if and how tokens will be created.
Finally, :type can specify which backend types you want to check.

A string value is always matched literally.  A symbol is matched
as its string value, literally.  All the SPEC values can be
single values (symbol or string) or lists thereof (in which case
any of the search terms matches).

:create t means to create a token if possible.

A new token will be created if no matching tokens were found.
The new token will have only the keys the backend requires.  For
the netrc backend, for instance, that's the user, host, and
port keys.

Here's an example:

\(let ((auth-source-creation-defaults \\='((user . \"defaultUser\")
                                        (A    . \"default A\"))))
  (auth-source-search :host \"mine\" :type \\='netrc :max 1
                      :P \"pppp\" :Q \"qqqq\"
                      :create t))

which says:

\"Search for any entry matching host `mine' in backends of type
 `netrc', maximum one result.

 Create a new entry if you found none.  The netrc backend will
 automatically require host, user, and port.  The host will be
 `mine'.  We prompt for the user with default `defaultUser' and
 for the port without a default.  We will not prompt for A, Q,
 or P.  The resulting token will only have keys user, host, and
 port.\"

:create \\='(A B C) also means to create a token if possible.

The behavior is like :create t but if the list contains any
parameter, that parameter will be required in the resulting
token.  The value for that parameter will be obtained from the
search parameters or from user input.  If any queries are needed,
the alist `auth-source-creation-defaults' will be checked for the
default value.  If the user, host, or port are missing, the alist
`auth-source-creation-prompts' will be used to look up the
prompts IN THAT ORDER (so the `user' prompt will be queried first,
then `host', then `port', and finally `secret').  Each prompt string
can use %u, %h, and %p to show the user, host, and port.  The prompt
is formatted with `format-prompt', a trailing \": \" is removed.

Here's an example:

\(let ((auth-source-creation-defaults \\='((user . \"defaultUser\")
                                        (A    . \"default A\")))
       (auth-source-creation-prompts
        \\='((secret . \"Enter IMAP password for %h:%p\"))))
  (auth-source-search :host \\='(\"nonesuch\" \"twosuch\") :type \\='netrc :max 1
                      :P \"pppp\" :Q \"qqqq\"
                      :create \\='(A B Q)))

which says:

\"Search for any entry matching host `nonesuch'
 or `twosuch' in backends of type `netrc', maximum one result.

 Create a new entry if you found none.  The netrc backend will
 automatically require host, user, and port.  The host will be
 `nonesuch' and Q will be `qqqq'.  We prompt for the password
 with the shown prompt.  We will not prompt for Q.  The resulting
 token will have keys user, host, port, A, B, and Q.  It will not
 have P with any value, even though P is used in the search to
 find only entries that have P set to `pppp'.\"

When multiple values are specified in the search parameter, the
user is prompted for which one.  So :host (X Y Z) would ask the
user to choose between X, Y, and Z.

This creation can fail if the search was not specific enough to
create a new token (it's up to the backend to decide that).  You
should `catch' the backend-specific error as usual.  Some
backends (netrc, at least) will prompt the user rather than throw
an error.

:require (A B C) means that only results that contain those
tokens will be returned.  Thus for instance requiring :secret
will ensure that any results will actually have a :secret
property.

:delete t means to delete any found entries.  nil by default.
Use `auth-source-delete' in ELisp code instead of calling
`auth-source-search' directly with this parameter.

:type (X Y Z) will check only those backend types.  `netrc' and
`secrets' are the only ones supported right now.

:max N means to try to return at most N items (defaults to 1).
More than N items may be returned, depending on the search and
the backend.

When :max is 0 the function will return just t or nil to indicate
if any matches were found.

:host (X Y Z) means to match only hosts X, Y, or Z according to
the match rules above.  Defaults to t.

:user (X Y Z) means to match only users X, Y, or Z according to
the match rules above.  Defaults to t.

:port (P Q R) means to match only protocols P, Q, or R.
Defaults to t.

:K (V1 V2 V3) for any other key K will match values V1, V2, or
V3 (note the match rules above).

The return value is a list with at most :max tokens.  Each token
is a plist with keys :backend :host :port :user, plus any other
keys provided by the backend (notably :secret).  But note the
exception for :max 0, which see above.

The token can hold a :save-function key.  If you call that, the
user will be prompted to save the data to the backend.  You can't
request that this should happen right after creation, because
`auth-source-search' has no way of knowing if the token is
actually useful.  So the caller must arrange to call this function.

The token's :secret key can hold a function.  In that case you
must call it to obtain the actual value."
  (let* ((backends (mapcar #'auth-source-backend-parse auth-sources))
         (max (or max 1))
         (ignored-keys '(:require :create :delete :max))
         (keys (cl-loop for i below (length spec) by 2
                        unless (memq (nth i spec) ignored-keys)
                        collect (nth i spec)))
         (cached (auth-source-remembered-p spec))
         ;; note that we may have cached results but found is still nil
         ;; (there were no results from the search)
         (found (auth-source-recall spec))
         filtered-backends)

    (if (and cached auth-source-do-cache)
        (auth-source-do-debug
         "auth-source-search: found %d CACHED results matching %S"
         (length found) spec)

      (cl-assert
       (or (eq t create) (listp create)) t
       "Invalid auth-source :create parameter (must be t or a list): %s %s")

      (cl-assert
       (listp require) t
       "Invalid auth-source :require parameter (must be a list): %s")

      (setq filtered-backends (copy-sequence backends))
      (dolist (backend backends)
        (cl-dolist (key keys)
          ;; ignore invalid slots
          (condition-case nil
              (unless (auth-source-search-collection
                       (plist-get spec key)
                       (slot-value backend key))
                (setq filtered-backends (delq backend filtered-backends))
                (cl-return))
            (invalid-slot-name nil))))

      (auth-source-do-trivia
       "auth-source-search: found %d backends matching %S"
       (length filtered-backends) spec)

      ;; (debug spec "filtered" filtered-backends)
      ;; First go through all the backends without :create, so we can
      ;; query them all.
      (setq found (auth-source-search-backends filtered-backends
                                               spec
                                               ;; to exit early
                                               max
                                               ;; create is always nil here
                                               nil delete
                                               require))

      (auth-source-do-debug
       "auth-source-search: found %d results (max %d) matching %S"
       (length found) max spec)

      ;; If we didn't find anything, then we allow the backend(s) to
      ;; create the entries.
      (when (and create
                 (not found))
        (setq found (auth-source-search-backends filtered-backends
                                                 spec
                                                 ;; to exit early
                                                 max
                                                 create delete
                                                 require))
        (auth-source-do-debug
         "auth-source-search: CREATED %d results (max %d) matching %S"
         (length found) max spec))

      ;; note we remember the lack of result too, if it's applicable
      (when auth-source-do-cache
        (auth-source-remember spec found)))

    (if (zerop max)
        (not (null found))
      found)))

(defun auth-source-search-backends (backends spec max create delete require)
  (let ((max (if (zerop max) 1 max)) ; stop with 1 match if we're asked for zero
        matches)
    (dolist (backend backends)
      (when (> max (length matches)) ; if we need more matches...
        (let* ((bmatches (apply
                          (slot-value backend 'search-function)
                          :backend backend
                          :type (slot-value backend 'type)
                          ;; note we're overriding whatever the spec
                          ;; has for :max, :require, :create, and :delete
                          :max max
                          :require require
                          :create create
                          :delete delete
                          spec)))
          (when bmatches
            (auth-source-do-trivia
             "auth-source-search-backend: got %d (max %d) in %s:%s matching %S"
             (length bmatches) max
             (slot-value backend 'type)
             (slot-value backend 'source)
             spec)
            (setq matches (append matches bmatches))))))
    matches))

(defun auth-source-delete (&rest spec)
  "Delete entries from the authentication backends according to SPEC.
Calls `auth-source-search' with the :delete property in SPEC set to t.
The backend may not actually delete the entries.

Returns the deleted entries."
  (apply #'auth-source-search (plist-put spec :delete t)))

(defun auth-source-search-collection (collection value)
  "Return t if VALUE is t or COLLECTION is t or COLLECTION contains VALUE."
  (when (and (atom collection) (not (eq t collection)))
    (setq collection (list collection)))

  ;; (debug :collection collection :value value)
  (or (eq collection t)
      (eq value t)
      (equal collection value)
      (member value collection)))

(defvar auth-source-netrc-cache nil)

(defun auth-source-forget-all-cached ()
  "Forget all cached auth-source data."
  (interactive)
  (maphash (lambda (key _password)
             (when (eq 'auth-source (car-safe key))
               ;; remove that key
               (password-cache-remove key)))
           password-data)
  (setq auth-source-netrc-cache nil))

(defun auth-source-format-cache-entry (spec)
  "Format SPEC entry to put it in the password cache."
  `(auth-source . ,spec))

(defun auth-source-remember (spec found)
  "Remember FOUND search results for SPEC."
  (let ((password-cache-expiry auth-source-cache-expiry))
    (password-cache-add
     (auth-source-format-cache-entry spec) found)))

(defun auth-source-recall (spec)
  "Recall FOUND search results for SPEC."
  (password-read-from-cache (auth-source-format-cache-entry spec)))

(defun auth-source-remembered-p (spec)
  "Check if SPEC is remembered."
  (password-in-cache-p
   (auth-source-format-cache-entry spec)))

(defun auth-source-forget (spec)
  "Forget any cached data matching SPEC exactly.

This is the same SPEC you passed to `auth-source-search'.
Returns t or nil for forgotten or not found."
  (password-cache-remove (auth-source-format-cache-entry spec)))

(defun auth-source-forget+ (&rest spec)
  "Forget any cached data matching SPEC.  Returns forgotten count.

This is not a full `auth-source-search' spec but works similarly.
For instance, \(:host \"myhost\" \"yourhost\") would find all the
cached data that was found with a search for those two hosts,
while \(:host t) would find all host entries."
  (let ((count 0))
    (maphash
     (lambda (key _password)
       (when (and (eq 'auth-source (car-safe key))
                  ;; and the spec matches what was stored in the cache
                  (auth-source-specmatchp spec (cdr key)))
         ;; remove that key
         (password-cache-remove key)
         (cl-incf count)))
     password-data)
    count))

(defun auth-source-specmatchp (spec stored)
  (let ((keys (cl-loop for i below (length spec) by 2
                       collect (nth i spec))))
    (not (eq
          (cl-dolist (key keys)
            (unless (auth-source-search-collection (plist-get stored key)
                                                   (plist-get spec key))
              (cl-return 'no)))
          'no))))

(defun auth-source-pick-first-password (&rest spec)
  "Pick the first secret found from applying SPEC to `auth-source-search'."
  (let* ((result (nth 0 (apply #'auth-source-search (plist-put spec :max 1))))
         (secret (plist-get result :secret)))

    (if (functionp secret)
        (funcall secret)
      secret)))

(defun auth-source-format-prompt (prompt alist)
  "Format PROMPT using %x (for any character x) specifiers in ALIST.
Remove trailing \": \"."
  (setq prompt (replace-regexp-in-string ":\\s-*$" "" prompt))
  (dolist (cell alist)
    (let ((c (nth 0 cell))
          (v (nth 1 cell)))
      (when (and c v)
        (setq prompt (replace-regexp-in-string (format "%%%c" c)
                                               (format "%s" v)
                                               prompt nil t)))))
  prompt)

(defun auth-source-ensure-strings (values)
  (if (eq values t)
      values
    (unless (listp values)
      (setq values (list values)))
    (mapcar (lambda (value)
	      (if (numberp value)
		  (format "%s" value)
		value))
	    values)))

;;; Backend specific parsing: netrc/authinfo backend

(defun auth-source--aput-1 (alist key val)
  (let ((seen ())
        (rest alist))
    (while (and (consp rest) (not (equal key (caar rest))))
      (push (pop rest) seen))
    (cons (cons key val)
          (if (null rest) alist
            (nconc (nreverse seen)
                   (if (equal key (caar rest)) (cdr rest) rest))))))
(defmacro auth-source--aput (var key val)
  `(setq ,var (auth-source--aput-1 ,var ,key ,val)))

(defun auth-source--aget (alist key)
  (cdr (assoc key alist)))

;; (auth-source-netrc-parse :file "~/.authinfo.gpg")
(cl-defun auth-source-netrc-parse (&key file max host user port require
                                   &allow-other-keys)
  "Parse FILE and return a list of all entries in the file.
Note that the MAX parameter is used so we can exit the parse early."
  (if (listp file)
      ;; We got already parsed contents; just return it.
      file
    (when (file-exists-p file)
      (setq port (auth-source-ensure-strings port))
      (with-temp-buffer
        (let* ((max (or max 5000))       ; sanity check: default to stop at 5K
               (modified 0)
               (cached (cdr-safe (assoc file auth-source-netrc-cache)))
               (cached-mtime (plist-get cached :mtime))
               (cached-secrets (plist-get cached :secret))
               (check (lambda(alist)
                        (and alist
                             (auth-source-search-collection
                              host
                              (or
                               (auth-source--aget alist "machine")
                               (auth-source--aget alist "host")
                               t))
                             (auth-source-search-collection
                              user
                              (or
                               (auth-source--aget alist "login")
                               (auth-source--aget alist "account")
                               (auth-source--aget alist "user")
                               t))
                             (auth-source-search-collection
                              port
                              (or
                               (auth-source--aget alist "port")
                               (auth-source--aget alist "protocol")
                               t))
                             (or
                              ;; the required list of keys is nil, or
                              (null require)
                              ;; every element of require is in n (normalized)
                              (let ((n (nth 0 (auth-source-netrc-normalize
                                               (list alist) file))))
                                (cl-loop for req in require
                                         always (plist-get n req)))))))
               result)

          (if (and (functionp cached-secrets)
                   (equal cached-mtime
                          (file-attribute-modification-time
                           (file-attributes file))))
              (progn
                (auth-source-do-trivia
                 "auth-source-netrc-parse: using CACHED file data for %s"
                 file)
                (insert (funcall cached-secrets)))
            (insert-file-contents file)
            ;; cache all netrc files (used to be just .gpg files)
            ;; Store the contents of the file obfuscated in memory.
            (auth-source--aput
             auth-source-netrc-cache file
             (list :mtime (file-attribute-modification-time
                           (file-attributes file))
                   :secret (let ((v (auth-source--obfuscate (buffer-string))))
                             (lambda () (auth-source--deobfuscate v))))))
          (goto-char (point-min))
          (let ((entries (auth-source-netrc-parse-entries check max))
                alist)
            (while (setq alist (pop entries))
                (push (nreverse alist) result)))

          (when (< 0 modified)
            (when auth-source-gpg-encrypt-to
              ;; (see bug#7487) making `epa-file-encrypt-to' local to
              ;; this buffer lets epa-file skip the key selection query
              ;; (see the `local-variable-p' check in
              ;; `epa-file-write-region').
              (unless (local-variable-p 'epa-file-encrypt-to (current-buffer))
                (make-local-variable 'epa-file-encrypt-to))
              (if (listp auth-source-gpg-encrypt-to)
                  (setq epa-file-encrypt-to auth-source-gpg-encrypt-to)))

            ;; ask AFTER we've successfully opened the file
            (when (y-or-n-p (format "Save file %s? (%d deletions)"
                                    file modified))
              (write-region (point-min) (point-max) file nil 'silent)
              (auth-source-do-debug
               "auth-source-netrc-parse: modified %d lines in %s"
               modified file)))

          (nreverse result))))))

(defun auth-source-netrc-parse-next-interesting ()
  "Advance to the next interesting position in the current buffer."
  (skip-chars-forward "\t ")
  ;; If we're looking at a comment or are at the end of the line, move forward
  (while (or (eq (char-after) ?#)
             (and (eolp)
                  (not (eobp))))
    (forward-line 1)
    (skip-chars-forward "\t ")))

(defun auth-source-netrc-looking-at-token ()
  "Say whether the next think in the buffer is a token (password, etc).
Match data is altered to reflect the token."
  (or (looking-at "'\\([^']*\\)'")
      (looking-at "\"\\([^\"]*\\)\"")
      (looking-at "\\([^ \t\n]+\\)")))

(defun auth-source-netrc-parse-one ()
  "Read one thing from the current buffer."
  (auth-source-netrc-parse-next-interesting)

  (when (auth-source-netrc-looking-at-token)
    (forward-char (length (match-string 0)))
    (prog1
        (match-string-no-properties 1)
      (auth-source-netrc-parse-next-interesting))))

;; with thanks to org-mode
(defsubst auth-source-current-line (&optional pos)
  (save-excursion
    (and pos (goto-char pos))
    ;; works also in narrowed buffer, because we start at 1, not point-min
    (+ (if (bolp) 1 0) (count-lines 1 (point)))))

(defun auth-source-netrc-parse-entries(check max)
  "Parse up to MAX netrc entries, passed by CHECK, from the current buffer."
  (let ((adder (lambda(check alist all)
                 (when (and
                        alist
                        (> max (length all))
                        (funcall check alist))
                   (push alist all))
                 all))
        item item2 all alist default)
    (while (setq item (auth-source-netrc-parse-one))
      (setq default (equal item "default"))
      ;; We're starting a new machine.  Save the old one.
      (when (and alist
                 (or default
                     (equal item "machine")))
        ;; (auth-source-do-trivia
        ;;  "auth-source-netrc-parse-entries: got entry %S" alist)
        (setq all (funcall adder check alist all)
              alist nil))
      ;; In default entries, we don't have a next token.
      ;; We store them as ("machine" . t)
      (if default
          (push (cons "machine" t) alist)
        ;; Not a default entry.  Grab the next item.
        (when (setq item2 (auth-source-netrc-parse-one))
          ;; Did we get a "machine" value?
          (if (equal item2 "machine")
	      (error
	       "%s: Unexpected `machine' token at line %d"
	       "auth-source-netrc-parse-entries"
	       (auth-source-current-line))
            (push (cons item item2) alist)))))

    ;; Clean up: if there's an entry left over, use it.
    (when alist
      (setq all (funcall adder check alist all))
      ;; (auth-source-do-trivia
      ;;  "auth-source-netrc-parse-entries: got2 entry %S" alist)
      )
    (nreverse all)))

(defvar auth-source-passphrase-alist nil)

(defun auth-source-token-passphrase-callback-function (_context _key-id file)
  (let* ((file (file-truename file))
	 (entry (assoc file auth-source-passphrase-alist))
	 passphrase)
    ;; return the saved passphrase, calling a function if needed
    (or (copy-sequence (if (functionp (cdr entry))
			   (funcall (cdr entry))
			 (cdr entry)))
	(progn
	  (unless entry
	    (setq entry (list file))
	    (push entry auth-source-passphrase-alist))
	  (setq passphrase
		(read-passwd
		 (format "Passphrase for %s tokens: " file)
		 t))
	  (setcdr entry (let ((p (copy-sequence passphrase)))
			  (lambda () p)))
	  passphrase))))

(defun auth-source-epa-extract-gpg-token (secret file)
  "Pass either the decoded SECRET or the gpg:BASE64DATA version.
FILE is the file from which we obtained this token."
  (when (string-match "^gpg:\\(.+\\)" secret)
    (setq secret (base64-decode-string (match-string 1 secret))))
  (let ((context (epg-make-context 'OpenPGP)))
    (epg-context-set-passphrase-callback
     context
     (cons #'auth-source-token-passphrase-callback-function
           file))
    (epg-decrypt-string context secret)))

(defvar pp-escape-newlines)

(defun auth-source-epa-make-gpg-token (secret file)
  (let ((context (epg-make-context 'OpenPGP))
        (pp-escape-newlines nil)
        cipher)
    (setf (epg-context-armor context) t)
    (epg-context-set-passphrase-callback
     context
     (cons #'auth-source-token-passphrase-callback-function
           file))
    (setq cipher (epg-encrypt-string context secret nil))
    (with-temp-buffer
      (insert cipher)
      (base64-encode-region (point-min) (point-max) t)
      (concat "gpg:" (buffer-substring-no-properties
                      (point-min)
                      (point-max))))))

(defun auth-source--symbol-keyword (symbol)
  (intern (format ":%s" symbol)))

(defun auth-source-netrc-normalize (alist filename)
  (mapcar (lambda (entry)
            (let (ret item)
              (while (setq item (pop entry))
                (let ((k (car item))
                      (v (cdr item)))

                  ;; apply key aliases
                  (setq k (cond ((member k '("machine")) "host")
                                ((member k '("login" "account")) "user")
                                ((member k '("protocol")) "port")
                                ((member k '("password")) "secret")
                                (t k)))

                  ;; Send back the secret in a function (lexical
                  ;; binding).  We slightly obfuscate the passwords
                  ;; (that's the "(mapcar #+' ..)" stuff) to avoid
                  ;; showing the passwords in clear text in backtraces
                  ;; and the like.
                  (when (equal k "secret")
                    (setq v (let ((lexv (auth-source--obfuscate v))
                                  (token-decoder nil))
                              (when (string-match "^gpg:" v)
                                ;; it's a GPG token: create a token decoder
                                ;; which unsets itself once
                                (setq token-decoder
                                      (lambda (val)
                                        (prog1
                                            (auth-source-epa-extract-gpg-token
                                             val
                                             filename)
                                          (setq token-decoder nil)))))
                              (lambda ()
                                (if token-decoder
                                    (funcall token-decoder
                                             (auth-source--deobfuscate lexv))
                                  (auth-source--deobfuscate lexv))))))
                  (setq ret (plist-put ret
                                       (auth-source--symbol-keyword k)
                                       v))))
              ret))
          alist))

;; Never change this variable.
(defvar auth-source--session-nonce nil)

(defun auth-source--obfuscate (string)
  ;; We want to keep passwords out of backtraces and bug reports and
  ;; the like, so if we have GnuTLS available, we encrypt them with a
  ;; nonce that we just keep in memory.  If somebody has access to the
  ;; current Emacs session, they can be decrypted, but if not, little
  ;; useful information is leaked.  If you reset the nonce, you also
  ;; have to call `auth-source-forget-all-cached'.
  (unless auth-source--session-nonce
    (setq auth-source--session-nonce
          (apply #'string (cl-loop repeat 16
                                   collect (random 128)))))
  (if (and (fboundp 'gnutls-symmetric-encrypt)
           (gnutls-available-p))
      (let ((cdata (car (last (gnutls-ciphers)))))
        (mapconcat
         #'base64-encode-string
         (gnutls-symmetric-encrypt
          (pop cdata)
          (auth-source--pad auth-source--session-nonce
                            (plist-get cdata :cipher-keysize))
          (list 'iv-auto (plist-get cdata :cipher-ivsize))
          (auth-source--pad (encode-coding-string string 'utf-8)
                            (plist-get cdata :cipher-blocksize)))
         "-"))
    (mapcar #'1- string)))

(defun auth-source--pad (string length)
  "Pad string S to a modulo of LENGTH."
  (let ((pad (- length (mod (length string) length))))
    (concat string (make-string pad pad))))

(defun auth-source--unpad (string)
  "Remove PKCS#7 padding from STRING."
  (substring string 0 (- (length string)
			 (aref string (1- (length string))))))

(defun auth-source--deobfuscate (data)
  (if (and (fboundp 'gnutls-symmetric-encrypt)
           (gnutls-available-p))
      (let ((cdata (car (last (gnutls-ciphers))))
            (bits (split-string data "-")))
        (decode-coding-string
         (auth-source--unpad
          (car
           (gnutls-symmetric-decrypt
            (pop cdata)
            (auth-source--pad auth-source--session-nonce
                              (plist-get cdata :cipher-keysize))
            (base64-decode-string (cadr bits))
            (base64-decode-string (car bits)))))
         'utf-8))
    (apply #'string (mapcar #'1+ data))))

(cl-defun auth-source-netrc-search (&rest spec
                                    &key backend require create
                                    type max host user port
                                    &allow-other-keys)
  "Given a property list SPEC, return search matches from the :backend.
See `auth-source-search' for details on SPEC."
  ;; just in case, check that the type is correct (null or same as the backend)
  (cl-assert (or (null type) (eq type (oref backend type)))
             t "Invalid netrc search: %s %s")

  (let ((results (auth-source-netrc-normalize
                  (auth-source-netrc-parse
                   :max max
                   :require require
                   :file (oref backend source)
                   :host (or host t)
                   :user (or user t)
                   :port (or port t))
                  (oref backend source))))

    ;; if we need to create an entry AND none were found to match
    (when (and create
               (not results))

      ;; create based on the spec and record the value
      (setq results (or
                     ;; if the user did not want to create the entry
                     ;; in the file, it will be returned
                     (apply (slot-value backend 'create-function) spec)
                     ;; if not, we do the search again without :create
                     ;; to get the updated data.

                     ;; the result will be returned, even if the search fails
                     (apply #'auth-source-netrc-search
                            (plist-put spec :create nil)))))
    results))

(defun auth-source-netrc-element-or-first (v)
  (if (listp v)
      (nth 0 v)
    v))

;; (auth-source-search :host "nonesuch" :type 'netrc :max 1 :create t)
;; (auth-source-search :host "nonesuch" :type 'netrc :max 1 :create t :create-extra-keys '((A "default A") (B)))

(cl-defun auth-source-netrc-create (&rest spec
                                    &key backend host port create user
                                    &allow-other-keys)
  (let* ((base-required '(host user port secret))
         ;; we know (because of an assertion in auth-source-search) that the
         ;; :create parameter is either t or a list (which includes nil)
         (create-extra (if (eq t create) nil create))
         (current-data (car (auth-source-search :max 1
                                                :host host
                                                :user user
                                                :port port)))
         (required (append base-required create-extra))
         (file (oref backend source))
         (add "")
         ;; `valist' is an alist
         valist
         ;; `artificial' will be returned if no creation is needed
         artificial)

    ;; only for base required elements (defined as function parameters):
    ;; fill in the valist with whatever data we may have from the search
    ;; we complete the first value if it's a list and use the value otherwise
    (dolist (br base-required)
      (let ((val (plist-get spec (auth-source--symbol-keyword br))))
        (when val
          (let ((br-choice (cond
                            ;; all-accepting choice (predicate is t)
                            ((eq t val) nil)
                            ;; just the value otherwise
                            (t val))))
            (when br-choice
              (auth-source--aput valist br br-choice))))))

    ;; for extra required elements, see if the spec includes a value for them
    (dolist (er create-extra)
      (let ((k (auth-source--symbol-keyword er))
            (keys (cl-loop for i below (length spec) by 2
                           collect (nth i spec))))
        (when (memq k keys)
          (auth-source--aput valist er (plist-get spec k)))))

    ;; for each required element
    (dolist (r required)
      (let* ((data (auth-source--aget valist r))
             ;; take the first element if the data is a list
             (data (or (auth-source-netrc-element-or-first data)
                       (plist-get current-data
                                  (auth-source--symbol-keyword r))))
             ;; this is the default to be offered
             (given-default (auth-source--aget
                             auth-source-creation-defaults r))
             ;; the default supplementals are simple:
             ;; for the user, try `given-default' and then (user-login-name);
             ;; otherwise take `given-default'
             (default (cond
                       ((and (not given-default) (eq r 'user))
                        (user-login-name))
                       (t given-default)))
             (printable-defaults (list
                                  (cons 'user
                                        (or
                                         (auth-source-netrc-element-or-first
                                          (auth-source--aget valist 'user))
                                         (plist-get artificial :user)
                                         "[any user]"))
                                  (cons 'host
                                        (or
                                         (auth-source-netrc-element-or-first
                                          (auth-source--aget valist 'host))
                                         (plist-get artificial :host)
                                         "[any host]"))
                                  (cons 'port
                                        (or
                                         (auth-source-netrc-element-or-first
                                          (auth-source--aget valist 'port))
                                         (plist-get artificial :port)
                                         "[any port]"))))
             (prompt (or (auth-source--aget auth-source-creation-prompts r)
                         (cl-case r
                           (secret "%p password for %u@%h")
                           (user "%p user name for %h")
                           (host "%p host name for user %u")
                           (port "%p port for %u@%h"))
                         (format "Enter %s (%%u@%%h:%%p)" r)))
             (prompt (auth-source-format-prompt
                      prompt
                      `((?u ,(auth-source--aget printable-defaults 'user))
                        (?h ,(auth-source--aget printable-defaults 'host))
                        (?p ,(auth-source--aget printable-defaults 'port))))))

        ;; Store the data, prompting for the password if needed.
        (setq data (or data
                       (if (eq r 'secret)
                           ;; Special case prompt for passwords.
                           ;; TODO: make the default (setq auth-source-netrc-use-gpg-tokens `((,(if (boundp 'epa-file-auto-mode-alist-entry) (car epa-file-auto-mode-alist-entry) "\\.gpg\\'") nil) (t gpg)))
                           ;; TODO: or maybe leave as (setq auth-source-netrc-use-gpg-tokens 'never)
                           (let* ((ep (format "Use GPG password tokens in %s?" file))
                                  (gpg-encrypt
                                   (cond
                                    ((eq auth-source-netrc-use-gpg-tokens 'never)
                                     'never)
                                    ((listp auth-source-netrc-use-gpg-tokens)
                                     (let ((check (copy-sequence
                                                   auth-source-netrc-use-gpg-tokens))
                                           item ret)
                                       (while check
                                         (setq item (pop check))
                                         (when (or (eq (car item) t)
                                                   (string-match (car item) file))
                                           (setq ret (cdr item))
                                           (setq check nil)))
                                       ret))
                                    (t 'never)))
                                  (plain
                                   (or (eval default)
                                       (read-passwd (format-prompt prompt nil)))))
                             ;; ask if we don't know what to do (in which case
                             ;; auth-source-netrc-use-gpg-tokens must be a list)
                             (unless gpg-encrypt
                               (setq gpg-encrypt (if (y-or-n-p ep) 'gpg 'never))
                               ;; TODO: save the defcustom now? or ask?
                               (setq auth-source-netrc-use-gpg-tokens
                                     (cons `(,file ,gpg-encrypt)
                                           auth-source-netrc-use-gpg-tokens)))
                             (if (eq gpg-encrypt 'gpg)
                                 (auth-source-epa-make-gpg-token plain file)
                               plain))
                         (if (and (stringp default) auth-source-save-behavior)
                             (read-string
                              (format-prompt prompt default) nil nil default)
                           (eval default)))))

        (when data
          (setq artificial (plist-put artificial
                                      (auth-source--symbol-keyword r)
                                      (if (eq r 'secret)
                                          (let ((data data))
                                            (lambda () data))
                                        data))))

        ;; When r is not an empty string...
        (when (and (stringp data)
                   (< 0 (length data)))
          ;; this function is not strictly necessary but I think it
          ;; makes the code clearer -tzz
          (let ((printer (lambda ()
                           ;; append the key (the symbol name of r)
                           ;; and the value in r
                           (format "%s%s %s"
                                   ;; prepend a space
                                   (if (zerop (length add)) "" " ")
                                   ;; remap auth-source tokens to netrc
                                   (cl-case r
                                     (user   "login")
                                     (host   "machine")
                                     (secret "password")
                                     (port   "port") ; redundant but clearer
                                     (t (symbol-name r)))
                                   (if (string-match "[\"# ]" data)
                                       (format "%S" data)
                                     data)))))
            (setq add (concat add (funcall printer)))))))

    (plist-put
     artificial
     :save-function
     (let ((file file)
           (add add))
       (lambda () (auth-source-netrc-saver file add))))

    (list artificial)))

(defun auth-source-netrc-saver (file add)
  "Save a line ADD in FILE, prompting along the way.
Respects `auth-source-save-behavior'.  Uses
`auth-source-netrc-cache' to avoid prompting more than once."
  (let* ((key (format "%s %s" file (rfc2104-hash 'md5 64 16 file add)))
         (cached (assoc key auth-source-netrc-cache)))

    (if cached
        (auth-source-do-trivia
         "auth-source-netrc-saver: found previous run for key %s, returning"
         key)
      (with-temp-buffer
        (when (file-exists-p file)
          (insert-file-contents file))
        (when auth-source-gpg-encrypt-to
          ;; (see bug#7487) making `epa-file-encrypt-to' local to
          ;; this buffer lets epa-file skip the key selection query
          ;; (see the `local-variable-p' check in
          ;; `epa-file-write-region').
          (unless (local-variable-p 'epa-file-encrypt-to (current-buffer))
            (make-local-variable 'epa-file-encrypt-to))
          (if (listp auth-source-gpg-encrypt-to)
              (setq epa-file-encrypt-to auth-source-gpg-encrypt-to)))
        ;; we want the new data to be found first, so insert at beginning
        (goto-char (point-min))

        ;; Ask AFTER we've successfully opened the file.
        (let ((prompt (format "Save auth info to file %s? " file))
              (done (not (eq auth-source-save-behavior 'ask)))
              (bufname "*auth-source Help*")
              k)
          (while (not done)
            (setq k (auth-source-read-char-choice prompt '(?y ?n ?N ?e ??)))
            (cl-case k
              (?y (setq done t))
              (?? (save-excursion
                    (with-output-to-temp-buffer bufname
                      (princ
                       (concat "(y)es, save\n"
                               "(n)o but use the info\n"
                               "(N)o and don't ask to save again\n"
                               "(e)dit the line\n"
                               "(?) for help as you can see.\n"))
                      ;; Why?  Doesn't with-output-to-temp-buffer already do
                      ;; the exact same thing anyway?  --Stef
                      (set-buffer standard-output)
                      (help-mode))))
              (?n (setq add ""
                        done t))
              (?N
               (setq add ""
                     done t)
               (customize-save-variable 'auth-source-save-behavior nil))
              (?e (setq add (read-string "Line to add: " add)))
              (t nil)))

          (when (get-buffer-window bufname)
            (delete-window (get-buffer-window bufname)))

          ;; Make sure the info is not saved.
          (when (null auth-source-save-behavior)
            (setq add ""))

          (when (< 0 (length add))
            (progn
              (unless (bolp)
                (insert "\n"))
              (insert add "\n")
              (write-region (point-min) (point-max) file nil 'silent)
	      ;; Make the .authinfo file non-world-readable.
	      (set-file-modes file #o600)
              (auth-source-do-debug
               "auth-source-netrc-create: wrote 1 new line to %s"
               file)
              (message "Saved new authentication information to %s" file)
              nil))))
      (auth-source--aput auth-source-netrc-cache key "ran"))))

;;; Backend specific parsing: Secrets API backend

(defun auth-source-secrets-listify-pattern (pattern)
  "Convert a PATTERN with lists to a list of string patterns.

auth-source patterns can have values of the form :foo (\"bar\"
\"qux\"), which means to match any secret with :foo equal to
\"bar\" or :foo equal to \"qux\".  The secrets backend supports
only string values for patterns, so this routine returns a list
of patterns that is equivalent to the single original PATTERN
when interpreted such that if a secret matches any pattern in the
list, it matches the original PATTERN."
  (if (null pattern)
      '(nil)
    (let* ((key (pop pattern))
           (value (pop pattern))
           (tails (auth-source-secrets-listify-pattern pattern))
           (heads (if (stringp value)
                      (list (list key value))
                    (mapcar (lambda (v) (list key v)) value))))
      (cl-loop for h in heads
               nconc (cl-loop for tl in tails collect (append h tl))))))

(cl-defun auth-source-secrets-search (&rest spec
                                      &key backend create delete label max
                                      &allow-other-keys)
  "Search the Secrets API; spec is like `auth-source'.

The :label key specifies the item's label.  It is the only key
that can specify a substring.  Any :label value besides a string
will allow any label.

All other search keys must match exactly.  If you need substring
matching, do a wider search and narrow it down yourself.

You'll get back all the properties of the token as a plist.

Here's an example that looks for the first item in the `Login'
Secrets collection:

 (let ((auth-sources \\='(\"secrets:Login\")))
    (auth-source-search :max 1))

Here's another that looks for the first item in the `Login'
Secrets collection whose label contains `gnus':

 (let ((auth-sources \\='(\"secrets:Login\")))
    (auth-source-search :max 1 :label \"gnus\"))

And this one looks for the first item in the `Login' Secrets
collection that's a Google Chrome entry for the git.gnus.org site
authentication tokens:

 (let ((auth-sources \\='(\"secrets:Login\")))
    (auth-source-search :max 1 :signon_realm \"https://git.gnus.org/Git\"))
"

  ;; TODO
  ;; (secrets-delete-item coll elt)
  (cl-assert (not delete) nil
             "The Secrets API auth-source backend doesn't support deletion yet")

  (let* ((coll (oref backend source))
         (max (or max 5000))     ; sanity check: default to stop at 5K
         (ignored-keys '(:create :delete :max :backend :label :require :type))
         (search-keys (cl-loop for i below (length spec) by 2
                               unless (memq (nth i spec) ignored-keys)
                               collect (nth i spec)))
         ;; build a search spec without the ignored keys
         ;; if a search key is nil or t (match anything), we skip it
         (search-specs (auth-source-secrets-listify-pattern
                        (apply #'append (mapcar
                                      (lambda (k)
                                        (if (or (null (plist-get spec k))
                                                (eq t (plist-get spec k)))
                                            nil
                                          (list k (plist-get spec k))))
                                      search-keys))))
         ;; needed keys (always including host, login, port, and secret)
         (returned-keys (delete-dups (append
				      '(:host :login :port :secret)
				      search-keys)))
         (items
          (cl-loop
           for search-spec in search-specs
           nconc
           (cl-loop for item in (apply #'secrets-search-items coll search-spec)
                    unless (and (stringp label)
                                (not (string-match label item)))
                    collect item)))
         ;; TODO: respect max in `secrets-search-items', not after the fact
         (items (butlast items (- (length items) max)))
         ;; convert the item name to a full plist
         (items (mapcar (lambda (item)
                          (append
                           ;; make an entry for the secret (password) element
                           (list
                            :secret
                            (let ((v (secrets-get-secret coll item)))
                              (lambda () v)))
                           ;; rewrite the entry from ((k1 v1) (k2 v2)) to plist
                           (apply #'append
                                  (mapcar (lambda (entry)
                                            (list (car entry) (cdr entry)))
                                          (secrets-get-attributes coll item)))))
                        items))
         ;; ensure each item has each key in `returned-keys'
         (items (mapcar (lambda (plist)
                          (append
                           (apply #'append
                                  (mapcar (lambda (req)
                                            (if (plist-get plist req)
                                                nil
                                              (list req nil)))
                                          returned-keys))
                           plist))
                        items)))
    (cond
     ;; if we need to create an entry AND none were found to match
     ((and create
           (not items))

      ;; create based on the spec and record the value
      (setq items (or
                   ;; if the user did not want to create the entry
                   ;; in the file, it will be returned
                   (apply (slot-value backend 'create-function) spec)
                   ;; if not, we do the search again without :create
                   ;; to get the updated data.

                   ;; the result will be returned, even if the search fails
                   (apply #'auth-source-secrets-search
                          (plist-put spec :create nil))))))
    items))

(cl-defun auth-source-secrets-create (&rest spec
                                      &key backend host port create
                                      &allow-other-keys)
  (let* ((base-required '(host user port secret label))
         ;; we know (because of an assertion in auth-source-search) that the
         ;; :create parameter is either t or a list (which includes nil)
         (create-extra (if (eq t create) nil create))
         (current-data (car (auth-source-search :max 1
                                                :host host
                                                :port port)))
         (required (append base-required create-extra))
         (collection (oref backend source))
         ;; `args' are the arguments for `secrets-create-item'.
         args
         ;; `valist' is an alist
         valist
         ;; `artificial' will be returned if no creation is needed
         artificial)

    ;; only for base required elements (defined as function parameters):
    ;; fill in the valist with whatever data we may have from the search
    ;; we complete the first value if it's a list and use the value otherwise
    (dolist (br base-required)
      (let ((val (plist-get spec (auth-source--symbol-keyword br))))
        (when val
          (let ((br-choice (cond
                            ;; all-accepting choice (predicate is t)
                            ((eq t val) nil)
                            ;; just the value otherwise
                            (t val))))
            (when br-choice
              (auth-source--aput valist br br-choice))))))

    ;; for extra required elements, see if the spec includes a value for them
    (dolist (er create-extra)
      (let ((k (auth-source--symbol-keyword er))
            (keys (cl-loop for i below (length spec) by 2
                           collect (nth i spec))))
        (when (memq k keys)
          (auth-source--aput valist er (plist-get spec k)))))

    ;; for each required element
    (dolist (r required)
      (let* ((data (auth-source--aget valist r))
             ;; take the first element if the data is a list
             (data (or (auth-source-netrc-element-or-first data)
                       (plist-get current-data
                                  (auth-source--symbol-keyword r))))
             ;; this is the default to be offered
             (given-default (auth-source--aget
                             auth-source-creation-defaults r))
             ;; the default supplementals are simple:
             ;; for the user, try `given-default' and then (user-login-name);
             ;; for the label, try `given-default' and then user@host;
             ;; otherwise take `given-default'
             (default (cond
                       ((and (not given-default) (eq r 'user))
                        (user-login-name))
                       ((and (not given-default) (eq r 'label))
                        (format "%s@%s"
                                (or (auth-source-netrc-element-or-first
                                     (auth-source--aget valist 'user))
                                    (plist-get artificial :user))
                                (or (auth-source-netrc-element-or-first
                                     (auth-source--aget valist 'host))
                                    (plist-get artificial :host))))
                       (t given-default)))
             (printable-defaults (list
                                  (cons 'user
                                        (or
                                         (auth-source-netrc-element-or-first
                                          (auth-source--aget valist 'user))
                                         (plist-get artificial :user)
                                         "[any user]"))
                                  (cons 'host
                                        (or
                                         (auth-source-netrc-element-or-first
                                          (auth-source--aget valist 'host))
                                         (plist-get artificial :host)
                                         "[any host]"))
                                  (cons 'port
                                        (or
                                         (auth-source-netrc-element-or-first
                                          (auth-source--aget valist 'port))
                                         (plist-get artificial :port)
                                         "[any port]"))
                                  (cons 'label
                                        (or
                                         (auth-source-netrc-element-or-first
                                          (auth-source--aget valist 'label))
                                         (plist-get artificial :label)
                                         "[any label]"))))
             (prompt (or (auth-source--aget auth-source-creation-prompts r)
                         (cl-case r
                           (secret "%p password for %u@%h")
                           (user "%p user name for %h")
                           (host "%p host name for user %u")
                           (port "%p port for %u@%h")
                           (label "Enter label for %u@%h"))
                         (format "Enter %s (%%u@%%h:%%p)" r)))
             (prompt (auth-source-format-prompt
                      prompt
                      `((?u ,(auth-source--aget printable-defaults 'user))
                        (?h ,(auth-source--aget printable-defaults 'host))
                        (?p ,(auth-source--aget printable-defaults 'port))))))

        ;; Store the data, prompting for the password if needed.
        (setq data (or data
                       (if (eq r 'secret)
                           (or (eval default)
                               (read-passwd  (format-prompt prompt nil)))
                         (if (and (stringp default) auth-source-save-behavior)
                             (read-string
                              (format-prompt prompt default) nil nil default)
                           (eval default)))))

        (when data
          (setq artificial (plist-put artificial
                                      (auth-source--symbol-keyword r)
                                      (if (eq r 'secret)
                                          (let ((data data))
                                            (lambda () data))
                                        data))))

        ;; When r is not an empty string...
        (when (and (stringp data)
                   (< 0 (length data))
                   (not (member r '(secret label))))
          ;; append the key (the symbol name of r)
          ;; and the value in r
          (setq args (append args (list (auth-source--symbol-keyword r) data))))))

    (plist-put
     artificial
     :save-function
     (let* ((collection collection)
            (item (plist-get artificial :label))
            (secret (plist-get artificial :secret))
            (secret (if (functionp secret) (funcall secret) secret)))
       (lambda ()
	 (auth-source-secrets-saver collection item secret args))))

    (list artificial)))

(defun auth-source-secrets-saver (collection item secret args)
  "Wrapper around `secrets-create-item', prompting along the way.
Respects `auth-source-save-behavior'."
  (let ((prompt (format "Save auth info to secrets collection %s? " collection))
        (done (not (eq auth-source-save-behavior 'ask)))
        (doit (eq auth-source-save-behavior t))
        (bufname "*auth-source Help*")
        k)
    (while (not done)
      (setq k (auth-source-read-char-choice prompt '(?y ?n ?N ??)))
      (cl-case k
        (?y (setq done t doit t))
        (?? (save-excursion
              (with-output-to-temp-buffer bufname
                (princ
                 (concat "(y)es, save\n"
                         "(n)o but use the info\n"
                         "(N)o and don't ask to save again\n"
                         "(?) for help as you can see.\n"))
                ;; Why?  Doesn't with-output-to-temp-buffer already do
                ;; the exact same thing anyway?  --Stef
                (set-buffer standard-output)
                (help-mode))))
        (?n (setq done t doit nil))
        (?N (setq done t doit nil)
            (customize-save-variable 'auth-source-save-behavior nil))
        (t nil)))

    (when doit
      (progn
        (auth-source-do-debug
         "secrets-create-item: wrote 1 new item to %s" collection)
        (message "Saved new authentication information to %s" collection)
	(apply 'secrets-create-item collection item secret args)))))

;;; Backend specific parsing: Mac OS Keychain (using /usr/bin/security) backend

(cl-defun auth-source-macos-keychain-search (&rest spec
                                             &key backend create delete type max
                                             &allow-other-keys)
  "Search the macOS Keychain; spec is like `auth-source'.

All search keys must match exactly.  If you need substring
matching, do a wider search and narrow it down yourself.

You'll get back all the properties of the token as a plist.

The :type key is either `macos-keychain-internet' or
`macos-keychain-generic'.

For the internet keychain type, the :label key searches the
item's labels (\"-l LABEL\" passed to \"/usr/bin/security\").
Similarly, :host maps to \"-s HOST\", :user maps to \"-a USER\",
and :port maps to \"-P PORT\" or \"-r PROT\"
\(note PROT has to be a 4-character string).

For the generic keychain type, the :label key searches the item's
labels (\"-l LABEL\" passed to \"/usr/bin/security\").
Similarly, :host maps to \"-c HOST\" (the \"creator\" keychain
field), :user maps to \"-a USER\", and :port maps to \"-s PORT\".

Here's an example that looks for the first item in the default
generic macOS Keychain:

 (let ((auth-sources \\='(macos-keychain-generic)))
    (auth-source-search :max 1)

Here's another that looks for the first item in the internet
macOS Keychain collection whose label is `gnus':

 (let ((auth-sources \\='(macos-keychain-internet)))
    (auth-source-search :max 1 :label \"gnus\")

And this one looks for the first item in the internet keychain
entries for git.gnus.org:

 (let ((auth-sources \\='(macos-keychain-internet\")))
    (auth-source-search :max 1 :host \"git.gnus.org\"))
"
  ;; TODO
  (cl-assert (not create) nil
          "The macOS Keychain auth-source backend doesn't support creation yet")
  ;; TODO
  ;; (macos-keychain-delete-item coll elt)
  (cl-assert (not delete) nil
          "The macOS Keychain auth-source backend doesn't support deletion yet")

  (let* ((coll (oref backend source))
         (max (or max 5000))     ; sanity check: default to stop at 5K
         ;; Filter out ignored keys from the spec
         (ignored-keys '(:create :delete :max :backend :label :host :port))
         ;; Build a search spec without the ignored keys
         ;; FIXME make this loop a function? it's used in at least 3 places
         (search-keys (cl-loop for i below (length spec) by 2
                               unless (memq (nth i spec) ignored-keys)
                               collect (nth i spec)))
         ;; If a search key value is nil or t (match anything), we skip it
         (search-spec (apply #'append (mapcar
                                      (lambda (k)
                                        (if (or (null (plist-get spec k))
                                                (eq t (plist-get spec k)))
                                            nil
                                          (list k (plist-get spec k))))
                                      search-keys)))
         ;; needed keys (always including host, login, port, and secret)
         (returned-keys (delete-dups (append
				      '(:host :login :port :secret)
				      search-keys)))
         ;; Extract host and port from spec
         (hosts (plist-get spec :host))
         (hosts (if (and hosts (listp hosts)) hosts `(,hosts)))
         (ports (plist-get spec :port))
         (ports (if (and ports (listp ports)) ports `(,ports)))
         ;; Loop through all combinations of host/port and pass each of these to
         ;; auth-source-macos-keychain-search-items
         (items (catch 'match
                  (dolist (host hosts)
                    (dolist (port ports)
                      (let* ((port (if port (format "%S" port)))
                             (items (apply #'auth-source-macos-keychain-search-items
                                           coll
                                           type
                                           max
                                           host port
                                           search-spec)))
                        (when items
                          (throw 'match items)))))))

         ;; ensure each item has each key in `returned-keys'
         (items (mapcar (lambda (plist)
                          (append
                           (apply #'append
                                  (mapcar (lambda (req)
                                            (if (plist-get plist req)
                                                nil
                                              (list req nil)))
                                          returned-keys))
                           plist))
                        items)))
    items))


(defun auth-source--decode-octal-string (string)
  "Convert octal string to utf-8 string.  E.g: 'a\134b' to 'a\b'"
  (let ((list (string-to-list string))
        (size (length string)))
    (decode-coding-string
     (apply #'unibyte-string
            (cl-loop for i = 0 then (+ i (if (eq (nth i list) ?\\) 4 1))
                     for var = (nth i list)
                     while (< i size)
                     if (eq var ?\\)
                     collect (string-to-number
                              (concat (cl-subseq list (+ i 1) (+ i 4))) 8)
                     else
                     collect var))
     'utf-8)))

(cl-defun auth-source-macos-keychain-search-items (coll _type _max host port
                                                   &key label type user
                                                   &allow-other-keys)
  (let* ((keychain-generic (eq type 'macos-keychain-generic))
         (args `(,(if keychain-generic
                      "find-generic-password"
                    "find-internet-password")
                 "-g"))
         (ret (list :type type)))
    (when label
      (setq args (append args (list "-l" label))))
    (when host
      (setq args (append args (list (if keychain-generic "-c" "-s") host))))
    (when user
      (setq args (append args (list "-a" user))))

    (when port
      (if keychain-generic
          (setq args (append args (list "-s" port)))
        (setq args (append args (list
                                 (if (string-match "[0-9]+" port) "-P" "-r")
                                 port)))))

      (unless (equal coll "default")
        (setq args (append args (list coll))))

      (with-temp-buffer
        (apply #'call-process "/usr/bin/security" nil t nil args)
        (goto-char (point-min))
        (while (not (eobp))
          (cond
           ((looking-at "^password: \\(?:0x[0-9A-F]+\\)? *\"\\(.+\\)\"")
            (setq ret (auth-source-macos-keychain-result-append
                       ret
                       keychain-generic
                       "secret"
                       (let ((v (auth-source--decode-octal-string
                                 (match-string 1))))
                         (lambda () v)))))
           ;; TODO: check if this is really the label
           ;; match 0x00000007 <blob>="AppleID"
           ((looking-at
             "^[ ]+0x00000007 <blob>=\\(?:0x[0-9A-F]+\\)? *\"\\(.+\\)\"")
            (setq ret (auth-source-macos-keychain-result-append
                       ret
                       keychain-generic
                       "label"
                       (auth-source--decode-octal-string (match-string 1)))))
           ;; match "crtr"<uint32>="aapl"
           ;; match "svce"<blob>="AppleID"
           ((looking-at
             "^[ ]+\"\\([a-z]+\\)\"[^=]+=\\(?:0x[0-9A-F]+\\)? *\"\\(.+\\)\"")
            (setq ret (auth-source-macos-keychain-result-append
                       ret
                       keychain-generic
                       (auth-source--decode-octal-string (match-string 1))
                       (auth-source--decode-octal-string (match-string 2))))))
          (forward-line)))
      ;; return `ret' iff it has the :secret key
      (and (plist-get ret :secret) (list ret))))

(defun auth-source-macos-keychain-result-append (result generic k v)
  (push v result)
  (push (auth-source--symbol-keyword
         (cond
          ((equal k "acct") "user")
          ;; for generic keychains, creator is host, service is port
          ((and generic (equal k "crtr")) "host")
          ((and generic (equal k "svce")) "port")
          ;; for internet keychains, protocol is port, server is host
          ((and (not generic) (equal k "ptcl")) "port")
          ((and (not generic) (equal k "srvr")) "host")
          (t k)))
        result))

(defun auth-source-macos-keychain-create (&rest spec)
  ;; TODO
  (debug spec))

;;; Backend specific parsing: PLSTORE backend

(cl-defun auth-source-plstore-search (&rest spec
                                      &key backend create delete max
                                      &allow-other-keys)
  "Search the PLSTORE; SPEC is like `auth-source'."
  (let* ((store (oref backend data))
         (max (or max 5000))     ; sanity check: default to stop at 5K
         (ignored-keys '(:create :delete :max :backend :label :require :type))
         (search-keys (cl-loop for i below (length spec) by 2
                               unless (memq (nth i spec) ignored-keys)
                               collect (nth i spec)))
         ;; build a search spec without the ignored keys
         ;; if a search key is nil or t (match anything), we skip it
         (search-spec (apply #'append (mapcar
                                      (lambda (k)
                                        (let ((v (plist-get spec k)))
                                          (if (or (null v)
                                                  (eq t v))
                                              nil
                                            (list
                                             k
                                             (auth-source-ensure-strings v)))))
                                      search-keys)))
         ;; needed keys (always including host, login, port, and secret)
         (returned-keys (delete-dups (append
				      '(:host :login :port :secret)
				      search-keys)))
         (items (plstore-find store search-spec))
         (item-names (mapcar #'car items))
         (items (butlast items (- (length items) max)))
         ;; convert the item to a full plist
         (items (mapcar (lambda (item)
                          (let* ((plist (copy-tree (cdr item)))
                                 (secret (plist-member plist :secret)))
                            (if secret
                                (setcar
                                 (cdr secret)
                                 (let ((v (car (cdr secret))))
                                   (if (functionp v)
                                       (lambda () (funcall v plist))
                                   (lambda () v)))))
                            plist))
                        items))
         ;; ensure each item has each key in `returned-keys'
         (items (mapcar (lambda (plist)
                          (append
                           (apply #'append
                                  (mapcar (lambda (req)
                                            (if (plist-get plist req)
                                                nil
                                              (list req nil)))
                                          returned-keys))
                           plist))
                        items)))
    (cond
     ;; if we need to create an entry AND none were found to match
     ((and create
           (not items))

      ;; create based on the spec and record the value
      (setq items (or
                   ;; if the user did not want to create the entry
                   ;; in the file, it will be returned
                   (apply (slot-value backend 'create-function) spec)
                   ;; if not, we do the search again without :create
                   ;; to get the updated data.

                   ;; the result will be returned, even if the search fails
                   (apply #'auth-source-plstore-search
                          (plist-put spec :create nil)))))
     ((and delete
           item-names)
      (dolist (item-name item-names)
        (plstore-delete store item-name))
      (plstore-save store)))
    items))

(cl-defun auth-source-plstore-create (&rest spec
                                      &key backend host port create
                                      &allow-other-keys)
  (let* ((base-required '(host user port secret))
         (base-secret '(secret))
         ;; we know (because of an assertion in auth-source-search) that the
         ;; :create parameter is either t or a list (which includes nil)
         (create-extra (if (eq t create) nil create))
         (current-data (car (auth-source-search :max 1
                                                :host host
                                                :port port)))
         (required (append base-required create-extra))
         ;; `valist' is an alist
         valist
         ;; `artificial' will be returned if no creation is needed
         artificial
         secret-artificial)

    ;; only for base required elements (defined as function parameters):
    ;; fill in the valist with whatever data we may have from the search
    ;; we complete the first value if it's a list and use the value otherwise
    (dolist (br base-required)
      (let ((val (plist-get spec (auth-source--symbol-keyword br))))
        (when val
          (let ((br-choice (cond
                            ;; all-accepting choice (predicate is t)
                            ((eq t val) nil)
                            ;; just the value otherwise
                            (t val))))
            (when br-choice
              (auth-source--aput valist br br-choice))))))

    ;; for extra required elements, see if the spec includes a value for them
    (dolist (er create-extra)
      (let ((k (auth-source--symbol-keyword er))
            (keys (cl-loop for i below (length spec) by 2
                           collect (nth i spec))))
        (when (memq k keys)
          (auth-source--aput valist er (plist-get spec k)))))

    ;; for each required element
    (dolist (r required)
      (let* ((data (auth-source--aget valist r))
             ;; take the first element if the data is a list
             (data (or (auth-source-netrc-element-or-first data)
                       (plist-get current-data
                                  (auth-source--symbol-keyword r))))
             ;; this is the default to be offered
             (given-default (auth-source--aget
                             auth-source-creation-defaults r))
             ;; the default supplementals are simple:
             ;; for the user, try `given-default' and then (user-login-name);
             ;; otherwise take `given-default'
             (default (cond
                       ((and (not given-default) (eq r 'user))
                        (user-login-name))
                       (t given-default)))
             (printable-defaults (list
                                  (cons 'user
                                        (or
                                         (auth-source-netrc-element-or-first
                                          (auth-source--aget valist 'user))
                                         (plist-get artificial :user)
                                         "[any user]"))
                                  (cons 'host
                                        (or
                                         (auth-source-netrc-element-or-first
                                          (auth-source--aget valist 'host))
                                         (plist-get artificial :host)
                                         "[any host]"))
                                  (cons 'port
                                        (or
                                         (auth-source-netrc-element-or-first
                                          (auth-source--aget valist 'port))
                                         (plist-get artificial :port)
                                         "[any port]"))))
             (prompt (or (auth-source--aget auth-source-creation-prompts r)
                         (cl-case r
                           (secret "%p password for %u@%h")
                           (user "%p user name for %h")
                           (host "%p host name for user %u")
                           (port "%p port for %u@%h"))
                         (format "Enter %s (%%u@%%h:%%p)" r)))
             (prompt (auth-source-format-prompt
                      prompt
                      `((?u ,(auth-source--aget printable-defaults 'user))
                        (?h ,(auth-source--aget printable-defaults 'host))
                        (?p ,(auth-source--aget printable-defaults 'port))))))

        ;; Store the data, prompting for the password if needed.
        (setq data (or data
                       (if (eq r 'secret)
                           (or (eval default)
                               (read-passwd (format-prompt prompt nil)))
                         (if (and (stringp default) auth-source-save-behavior)
                             (read-string
                              (format-prompt prompt default) nil nil default)
                           (eval default)))))

        (when data
          (if (member r base-secret)
              (setq secret-artificial
                    (plist-put secret-artificial
                               (auth-source--symbol-keyword r)
                               data))
            (setq artificial (plist-put artificial
                                        (auth-source--symbol-keyword r)
                                        data))))))
    (plstore-put (oref backend data)
                 (sha1 (format "%s@%s:%s"
                               (plist-get artificial :user)
                               (plist-get artificial :host)
                               (plist-get artificial :port)))
                 artificial secret-artificial)
    (if (y-or-n-p (format "Save auth info to file %s? "
                          (plstore-get-file (oref backend data))))
        (plstore-save (oref backend data)))))

;;; Backend specific parsing: JSON backend
;; (auth-source-search :max 1 :machine "imap.gmail.com")
;; (auth-source-search :max 1 :host '("my-gmail" "imap.gmail.com") :port '(993 "imaps" "imap" "993" "143") :user nil :require '(:user :secret))

(defun auth-source-json-check (host user port require item)
  (and item
       (auth-source-search-collection
        (or host t)
        (or
         (plist-get item :machine)
         (plist-get item :host)
         t))
       (auth-source-search-collection
        (or user t)
        (or
         (plist-get item :login)
         (plist-get item :account)
         (plist-get item :user)
         t))
       (auth-source-search-collection
        (or port t)
        (or
         (plist-get item :port)
         (plist-get item :protocol)
         t))
       (or
        ;; the required list of keys is nil, or
        (null require)
        ;; every element of require is in
        (cl-loop for req in require
                 always (plist-get item req)))))

(cl-defun auth-source-json-search (&rest spec
                                    &key backend require
                                    type max host user port
                                    &allow-other-keys)
  "Given a property list SPEC, return search matches from the :backend.
See `auth-source-search' for details on SPEC."
  ;; just in case, check that the type is correct (null or same as the backend)
  (cl-assert (or (null type) (eq type (oref backend type)))
             t "Invalid JSON search: %s %s")

  ;; Hide the secrets early to avoid accidental exposure.
  (let* ((jdata
          (mapcar (lambda (entry)
                    (let (ret)
                      (while entry
                        (let* ((item (pop entry))
                               (k (auth-source--symbol-keyword (car item)))
                               (v (cdr item)))
                          (setq k (cond ((memq k '(:machine)) :host)
                                        ((memq k '(:login :account)) :user)
                                        ((memq k '(:protocol)) :port)
                                        ((memq k '(:password)) :secret)
                                        (t k)))
                          ;; send back the secret in a function (lexical binding)
                          (when (eq k :secret)
                            (setq v (let ((lexv v))
                                      (lambda () lexv))))
                          (setq ret (plist-put ret k v))))
                      ret))
                  (json-read-file (oref backend source))))
         (max (or max 5000))       ; sanity check: default to stop at 5K
         all)
    (dolist (item jdata)
      (when (and item
                 (> max (length all))
                 (auth-source-json-check host user port require item))
        (push item all)))
    (nreverse all)))

;;; older API

;; (auth-source-user-or-password '("login" "password") "imap.myhost.com" t "tzz")

;; deprecate the old interface
(make-obsolete 'auth-source-user-or-password
               'auth-source-search "24.1")
(make-obsolete 'auth-source-forget-user-or-password
               'auth-source-forget "24.1")

(defun auth-source-user-or-password
  (mode host port &optional username create-missing delete-existing)
  "Find MODE (string or list of strings) matching HOST and PORT.

DEPRECATED in favor of `auth-source-search'!

USERNAME is optional and will be used as \"login\" in a search
across the Secret Service API (see secrets.el) if the resulting
items don't have a username.  This means that if you search for
username \"joe\" and it matches an item but the item doesn't have
a :user attribute, the username \"joe\" will be returned.

A non-nil DELETE-EXISTING means deleting any matching password
entry in the respective sources.  This is useful only when
CREATE-MISSING is non-nil as well; the intended use case is to
remove wrong password entries.

If no matching entry is found, and CREATE-MISSING is non-nil,
the password will be retrieved interactively, and it will be
stored in the password database which matches best (see
`auth-sources').

MODE can be \"login\" or \"password\"."
  (auth-source-do-debug
   "auth-source-user-or-password: DEPRECATED get %s for %s (%s) + user=%s"
   mode host port username)

  (let* ((listy (listp mode))
         (mode (if listy mode (list mode)))
         ;; (cname (if username
         ;;            (format "%s %s:%s %s" mode host port username)
         ;;          (format "%s %s:%s" mode host port)))
         (search (list :host host :port port))
         (search (if username (append search (list :user username)) search))
         (search (if create-missing
                     (append search (list :create t))
                   search))
         (search (if delete-existing
                     (append search (list :delete t))
                   search))
         ;; (found (if (not delete-existing)
         ;;            (gethash cname auth-source-cache)
         ;;          (remhash cname auth-source-cache)
         ;;          nil)))
         (found nil))
    (if found
        (progn
          (auth-source-do-debug
           "auth-source-user-or-password: DEPRECATED cached %s=%s for %s (%s) + %s"
           mode
           ;; don't show the password
           (if (and (member "password" mode) t)
               "SECRET"
             found)
           host port username)
          found)                        ; return the found data
      ;; else, if not found, search with a max of 1
      (let ((choice (nth 0 (apply #'auth-source-search
                                  (append '(:max 1) search)))))
        (when choice
          (dolist (m mode)
            (cond
             ((equal "password" m)
              (push (if (plist-get choice :secret)
                        (funcall (plist-get choice :secret))
                      nil) found))
             ((equal "login" m)
              (push (plist-get choice :user) found)))))
        (setq found (nreverse found))
        (setq found (if listy found (car-safe found)))))

    found))

(defun auth-source-user-and-password (host &optional user)
  (let* ((auth-info (car
                     (if user
                         (auth-source-search
                          :host host
                          :user user
                          :max 1
                          :require '(:user :secret)
                          :create nil)
                       (auth-source-search
                        :host host
                        :max 1
                        :require '(:user :secret)
                        :create nil))))
         (user (plist-get auth-info :user))
         (password (plist-get auth-info :secret)))
    (when (functionp password)
      (setq password (funcall password)))
    (list user password auth-info)))

;;; Tiny mode for editing .netrc/.authinfo modes (that basically just
;;; hides passwords and adds basic syntax highlighting).

(defcustom authinfo-hidden "password"
  "Regexp matching elements in .authinfo/.netrc files that should be hidden."
  :type 'regexp
  :version "27.1")

(defcustom authinfo-hide-elements t
  "Whether to use `authinfo-hidden' to hide elements in authinfo files."
  :type 'boolean
  :version "28.1")

(defvar authinfo--keywords
  '(("^#.*" . font-lock-comment-face)
    ("^\\(machine\\)[ \t]+\\([^ \t\n]+\\)"
     (1 font-lock-variable-name-face)
     (2 font-lock-builtin-face))
    ("\\(login\\)[ \t]+\\([^ \t\n]+\\)"
     (1 font-lock-comment-delimiter-face)
     (2 font-lock-keyword-face))
    ("\\(password\\)[ \t]+\\([^ \t\n]+\\)"
     (1 font-lock-comment-delimiter-face)
     (2 font-lock-doc-face))
    ("\\(port\\)[ \t]+\\([^ \t\n]+\\)"
     (1 font-lock-comment-delimiter-face)
     (2 font-lock-type-face))
    ("\\([^ \t\n]+\\)[, \t]+\\([^ \t\n]+\\)"
     (1 font-lock-constant-face)
     (2 nil))))

;;;###autoload
(define-derived-mode authinfo-mode fundamental-mode "Authinfo"
  "Mode for editing .authinfo/.netrc files.

This is just like `fundamental-mode', but has basic syntax
highlighting and hides passwords.  Passwords are revealed when
point is moved into the passwords (see `authinfo-hide-elements').

\\{authinfo-mode-map}"
  (font-lock-add-keywords nil authinfo--keywords)
  (setq-local comment-start "#")
  (setq-local comment-end "")
  (when authinfo-hide-elements
    (authinfo--hide-passwords (point-min) (point-max))
    (reveal-mode)))

(defun authinfo--hide-passwords (start end)
  (save-excursion
    (save-restriction
      (narrow-to-region start end)
      (goto-char start)
      (while (re-search-forward (format "\\(\\s-\\|^\\)\\(%s\\)\\s-+"
                                        authinfo-hidden)
                                nil t)
        (when (auth-source-netrc-looking-at-token)
          (let ((overlay (make-overlay (match-beginning 0) (match-end 0))))
            (overlay-put overlay 'display
                         (propertize "****" 'face 'font-lock-doc-face))
            (overlay-put overlay 'reveal-toggle-invisible
                         #'authinfo--toggle-display)))))))

(defun authinfo--toggle-display (overlay hide)
  (if hide
      (overlay-put overlay 'display
                   (propertize "****" 'face 'font-lock-doc-face))
    (overlay-put overlay 'display nil)))

(provide 'auth-source)

;;; auth-source.el ends here

debug log:

solving 6919738398 ...
found 6919738398 in https://git.savannah.gnu.org/cgit/emacs.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://git.savannah.gnu.org/cgit/emacs.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).