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1.4 ! martijn 1: /* $OpenBSD: ldapclient.c,v 1.3 2018/07/03 10:10:09 jmc Exp $ */
1.1 reyk 2:
3: /*
4: * Copyright (c) 2018 Reyk Floeter <reyk@openbsd.org>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/param.h>
20: #include <sys/queue.h>
21: #include <sys/socket.h>
1.2 reyk 22: #include <sys/stat.h>
1.1 reyk 23: #include <sys/tree.h>
24: #include <sys/un.h>
25:
26: #include <netinet/in.h>
27: #include <arpa/inet.h>
28:
29: #include <stdio.h>
30: #include <stdlib.h>
31: #include <stdint.h>
32: #include <unistd.h>
33: #include <ctype.h>
34: #include <err.h>
35: #include <errno.h>
36: #include <event.h>
37: #include <fcntl.h>
38: #include <limits.h>
39: #include <netdb.h>
40: #include <pwd.h>
41: #include <readpassphrase.h>
42: #include <resolv.h>
43: #include <signal.h>
44: #include <string.h>
45: #include <vis.h>
46:
47: #include "aldap.h"
48: #include "log.h"
49:
50: #define F_STARTTLS 0x01
51: #define F_TLS 0x02
52: #define F_NEEDAUTH 0x04
53: #define F_LDIF 0x08
54:
55: #define CAPATH "/etc/ssl/cert.pem"
56: #define LDAPHOST "localhost"
57: #define LDAPFILTER "(objectClass=*)"
58: #define LDIF_LINELENGTH 79
1.2 reyk 59: #define LDAPPASSMAX 1024
1.1 reyk 60:
61: struct ldapc {
62: struct aldap *ldap_al;
63: char *ldap_host;
64: int ldap_port;
65: char *ldap_capath;
66: char *ldap_binddn;
67: char *ldap_secret;
68: unsigned int ldap_flags;
69: enum protocol_op ldap_req;
70: enum aldap_protocol ldap_protocol;
71: struct aldap_url ldap_url;
72: };
73:
74: struct ldapc_search {
75: int ls_sizelimit;
76: int ls_timelimit;
77: char *ls_basedn;
78: char *ls_filter;
79: int ls_scope;
80: char **ls_attr;
81: };
82:
83: __dead void usage(void);
84: int ldapc_connect(struct ldapc *);
85: int ldapc_search(struct ldapc *, struct ldapc_search *);
86: int ldapc_printattr(struct ldapc *, const char *, const char *);
87: void ldapc_disconnect(struct ldapc *);
88: int ldapc_parseurl(struct ldapc *, struct ldapc_search *,
89: const char *);
90: const char *ldapc_resultcode(enum result_code);
91: const char *url_decode(char *);
92:
93: __dead void
94: usage(void)
95: {
96: extern char *__progname;
97:
98: fprintf(stderr,
1.3 jmc 99: "usage: %s search [-LvWxZ] [-b basedn] [-c CAfile] [-D binddn] [-H host]\n"
100: " [-l timelimit] [-s scope] [-w secret] [-y secretfile] [-z sizelimit]\n"
101: " [filter] [attributes ...]\n",
1.1 reyk 102: __progname);
103:
104: exit(1);
105: }
106:
107: int
108: main(int argc, char *argv[])
109: {
1.2 reyk 110: char passbuf[LDAPPASSMAX];
111: const char *errstr, *url = NULL, *secretfile = NULL;
112: struct stat st;
1.1 reyk 113: struct ldapc ldap;
114: struct ldapc_search ls;
115: int ch;
116: int verbose = 1;
1.2 reyk 117: FILE *fp;
1.1 reyk 118:
119: if (pledge("stdio inet unix tty rpath dns", NULL) == -1)
120: err(1, "pledge");
121:
122: log_init(verbose, 0);
123:
124: memset(&ldap, 0, sizeof(ldap));
125: memset(&ls, 0, sizeof(ls));
126: ls.ls_scope = -1;
127: ldap.ldap_port = -1;
128:
129: /*
130: * Check the command. Currently only "search" is supported but
131: * it could be extended with others such as add, modify, or delete.
132: */
133: if (argc < 2)
134: usage();
135: else if (strcmp("search", argv[1]) == 0)
136: ldap.ldap_req = LDAP_REQ_SEARCH;
137: else
138: usage();
139: argc--;
140: argv++;
141:
1.2 reyk 142: while ((ch = getopt(argc, argv, "b:c:D:H:Ll:s:vWw:xy:Zz:")) != -1) {
1.1 reyk 143: switch (ch) {
144: case 'b':
145: ls.ls_basedn = optarg;
146: break;
147: case 'c':
148: ldap.ldap_capath = optarg;
149: break;
150: case 'D':
151: ldap.ldap_binddn = optarg;
152: ldap.ldap_flags |= F_NEEDAUTH;
153: break;
154: case 'H':
155: url = optarg;
156: break;
157: case 'L':
158: ldap.ldap_flags |= F_LDIF;
159: break;
160: case 'l':
161: ls.ls_timelimit = strtonum(optarg, 0, INT_MAX,
162: &errstr);
163: if (errstr != NULL)
164: errx(1, "timelimit %s", errstr);
165: break;
166: case 's':
167: if (strcasecmp("base", optarg) == 0)
168: ls.ls_scope = LDAP_SCOPE_BASE;
169: else if (strcasecmp("one", optarg) == 0)
170: ls.ls_scope = LDAP_SCOPE_ONELEVEL;
171: else if (strcasecmp("sub", optarg) == 0)
172: ls.ls_scope = LDAP_SCOPE_SUBTREE;
173: else
174: errx(1, "invalid scope: %s", optarg);
175: break;
176: case 'v':
177: verbose++;
178: break;
179: case 'w':
180: ldap.ldap_secret = optarg;
181: ldap.ldap_flags |= F_NEEDAUTH;
182: break;
183: case 'W':
184: ldap.ldap_flags |= F_NEEDAUTH;
185: break;
186: case 'x':
187: /* provided for compatibility */
188: break;
1.2 reyk 189: case 'y':
190: secretfile = optarg;
191: ldap.ldap_flags |= F_NEEDAUTH;
192: break;
1.1 reyk 193: case 'Z':
194: ldap.ldap_flags |= F_STARTTLS;
195: break;
196: case 'z':
197: ls.ls_sizelimit = strtonum(optarg, 0, INT_MAX,
198: &errstr);
199: if (errstr != NULL)
200: errx(1, "sizelimit %s", errstr);
201: break;
202: default:
203: usage();
204: }
205: }
206: argc -= optind;
207: argv += optind;
208:
209: log_setverbose(verbose);
210:
211: if (url != NULL && ldapc_parseurl(&ldap, &ls, url) == -1)
212: errx(1, "ldapurl");
213:
214: /* Set the default after parsing URL and/or options */
215: if (ldap.ldap_host == NULL)
216: ldap.ldap_host = LDAPHOST;
217: if (ldap.ldap_port == -1)
218: ldap.ldap_port = ldap.ldap_protocol == LDAPS ?
219: LDAPS_PORT : LDAP_PORT;
220: if (ldap.ldap_protocol == LDAP && (ldap.ldap_flags & F_STARTTLS))
221: ldap.ldap_protocol = LDAPTLS;
222: if (ldap.ldap_capath == NULL)
223: ldap.ldap_capath = CAPATH;
224: if (ls.ls_basedn == NULL)
225: ls.ls_basedn = "";
226: if (ls.ls_scope == -1)
227: ls.ls_scope = LDAP_SCOPE_SUBTREE;
228: if (ls.ls_filter == NULL)
229: ls.ls_filter = LDAPFILTER;
230:
231: if (ldap.ldap_flags & F_NEEDAUTH) {
232: if (ldap.ldap_binddn == NULL) {
233: log_warnx("missing -D binddn");
234: usage();
1.2 reyk 235: }
236: if (secretfile != NULL) {
237: if (ldap.ldap_secret != NULL)
238: errx(1, "conflicting -w/-y options");
239:
240: /* read password from stdin or file (first line) */
241: if (strcmp(secretfile, "-") == 0)
242: fp = stdin;
243: else if (stat(secretfile, &st) == -1)
244: err(1, "failed to access %s", secretfile);
245: else if (S_ISREG(st.st_mode) && (st.st_mode & S_IROTH))
246: errx(1, "%s is world-readable", secretfile);
247: else if ((fp = fopen(secretfile, "r")) == NULL)
248: err(1, "failed to open %s", secretfile);
249: if (fgets(passbuf, sizeof(passbuf), fp) == NULL)
250: err(1, "failed to read %s", secretfile);
251: if (fp != stdin)
252: fclose(fp);
253:
254: passbuf[strcspn(passbuf, "\n")] = '\0';
255: ldap.ldap_secret = passbuf;
1.1 reyk 256: }
257: if (ldap.ldap_secret == NULL) {
258: if (readpassphrase("Password: ",
259: passbuf, sizeof(passbuf), RPP_REQUIRE_TTY) == NULL)
260: errx(1, "failed to read LDAP password");
261: ldap.ldap_secret = passbuf;
262: }
263: }
264:
265: if (pledge("stdio inet unix rpath dns", NULL) == -1)
266: err(1, "pledge");
267:
268: /* optional search filter */
269: if (argc && strchr(argv[0], '=') != NULL) {
270: ls.ls_filter = argv[0];
271: argc--;
272: argv++;
273: }
274: /* search attributes */
275: if (argc)
276: ls.ls_attr = argv;
277:
278: if (ldapc_connect(&ldap) == -1)
279: errx(1, "LDAP connection failed");
280:
281: if (pledge("stdio", NULL) == -1)
282: err(1, "pledge");
283:
284: if (ldapc_search(&ldap, &ls) == -1)
285: errx(1, "LDAP search failed");
286:
287: ldapc_disconnect(&ldap);
288: aldap_free_url(&ldap.ldap_url);
289:
290: return (0);
291: }
292:
293: int
294: ldapc_search(struct ldapc *ldap, struct ldapc_search *ls)
295: {
296: struct aldap_page_control *pg = NULL;
297: struct aldap_message *m;
298: const char *errstr;
299: const char *searchdn, *dn = NULL;
300: char *outkey;
301: char **outvalues;
302: int ret, i, code, fail = 0;
303:
304: do {
305: if (aldap_search(ldap->ldap_al, ls->ls_basedn, ls->ls_scope,
306: ls->ls_filter, ls->ls_attr, 0, ls->ls_sizelimit,
307: ls->ls_timelimit, pg) == -1) {
308: aldap_get_errno(ldap->ldap_al, &errstr);
309: log_warnx("LDAP search failed: %s", errstr);
310: return (-1);
311: }
312:
313: if (pg != NULL) {
314: aldap_freepage(pg);
315: pg = NULL;
316: }
317:
318: while ((m = aldap_parse(ldap->ldap_al)) != NULL) {
319: if (ldap->ldap_al->msgid != m->msgid) {
320: goto fail;
321: }
322:
323: if ((code = aldap_get_resultcode(m)) != LDAP_SUCCESS) {
324: log_warnx("LDAP search failed: %s(%d)",
325: ldapc_resultcode(code), code);
326: break;
327: }
328:
329: if (m->message_type == LDAP_RES_SEARCH_RESULT) {
330: if (m->page != NULL && m->page->cookie_len != 0)
331: pg = m->page;
332: else
333: pg = NULL;
334:
335: aldap_freemsg(m);
336: break;
337: }
338:
339: if (m->message_type != LDAP_RES_SEARCH_ENTRY) {
340: goto fail;
341: }
342:
343: if (aldap_count_attrs(m) < 1) {
344: aldap_freemsg(m);
345: continue;
346: }
347:
348: if ((searchdn = aldap_get_dn(m)) == NULL)
349: goto fail;
350:
351: if (dn != NULL)
352: printf("\n");
353: else
354: dn = ls->ls_basedn;
355: if (strcmp(dn, searchdn) != 0)
356: printf("dn: %s\n", searchdn);
357:
358: for (ret = aldap_first_attr(m, &outkey, &outvalues);
359: ret != -1;
360: ret = aldap_next_attr(m, &outkey, &outvalues)) {
361: for (i = 0; outvalues != NULL &&
362: outvalues[i] != NULL; i++) {
363: if (ldapc_printattr(ldap, outkey,
364: outvalues[i]) == -1) {
365: fail = 1;
366: break;
367: }
368: }
369: }
370: free(outkey);
371: aldap_free_attr(outvalues);
372:
373: aldap_freemsg(m);
374: }
375: } while (pg != NULL && fail == 0);
376:
377: if (fail)
378: return (-1);
379: return (0);
380: fail:
381: ldapc_disconnect(ldap);
382: return (-1);
383: }
384:
385: int
386: ldapc_printattr(struct ldapc *ldap, const char *key, const char *value)
387: {
388: char *p = NULL, *out;
389: const unsigned char *cp;
390: int encode;
391: size_t inlen, outlen, left;
392:
393: if (ldap->ldap_flags & F_LDIF) {
394: /* OpenLDAP encodes the userPassword by default */
395: if (strcasecmp("userPassword", key) == 0)
396: encode = 1;
397: else
398: encode = 0;
399:
400: /*
401: * The LDIF format a set of characters that can be included
402: * in SAFE-STRINGs. String value that do not match the
403: * criteria must be encoded as Base64.
404: */
405: for (cp = (const unsigned char *)value;
406: encode == 0 &&*cp != '\0'; cp++) {
407: /* !SAFE-CHAR %x01-09 / %x0B-0C / %x0E-7F */
408: if (*cp > 127 ||
409: *cp == '\0' ||
410: *cp == '\n' ||
411: *cp == '\r')
412: encode = 1;
413: }
414:
415: if (!encode) {
416: if (asprintf(&p, "%s: %s", key, value) == -1) {
417: log_warnx("asprintf");
418: return (-1);
419: }
420: } else {
421: inlen = strlen(value);
422: outlen = inlen * 2 + 1;
423:
424: if ((out = calloc(1, outlen)) == NULL ||
425: b64_ntop(value, inlen, out, outlen) == -1) {
426: log_warnx("Base64 encoding failed");
427: free(p);
428: return (-1);
429: }
430:
431: /* Base64 is indicated with a double-colon */
432: if (asprintf(&p, "%s: %s", key, out) == -1) {
433: log_warnx("asprintf");
434: free(out);
435: return (-1);
436: }
437: free(out);
438: }
439:
440: /* Wrap lines */
441: for (outlen = 0, inlen = strlen(p);
442: outlen < inlen;
1.4 ! martijn 443: outlen += LDIF_LINELENGTH - 1) {
1.1 reyk 444: if (outlen)
445: putchar(' ');
1.4 ! martijn 446: if (outlen > LDIF_LINELENGTH)
! 447: outlen--;
1.1 reyk 448: /* max. line length - newline - optional indent */
449: left = MIN(inlen - outlen, outlen ?
450: LDIF_LINELENGTH - 2 :
451: LDIF_LINELENGTH - 1);
452: fwrite(p + outlen, left, 1, stdout);
453: putchar('\n');
454: }
455: } else {
456: /*
457: * Use vis(1) instead of base64 encoding of non-printable
458: * values. This is much nicer as it always prdocues a
459: * human-readable visual output. This can safely be done
460: * on all values no matter if they include non-printable
461: * characters.
462: */
463: if (stravis(&p, value, VIS_SAFE|VIS_NL) == -1) {
464: log_warn("visual encoding failed");
465: return (-1);
466: }
467:
468: printf("%s: %s\n", key, p);
469: }
470:
471: free(p);
472: return (0);
473: }
474:
475: int
476: ldapc_connect(struct ldapc *ldap)
477: {
478: struct addrinfo ai, *res, *res0;
479: struct sockaddr_un un;
480: int ret = -1, saved_errno, fd = -1, code;
481: struct aldap_message *m;
482: const char *errstr;
483: struct tls_config *tls_config;
484: char port[6];
485:
486: if (ldap->ldap_protocol == LDAPI) {
487: memset(&un, 0, sizeof(un));
488: un.sun_family = AF_UNIX;
489: if (strlcpy(un.sun_path, ldap->ldap_host,
490: sizeof(un.sun_path)) >= sizeof(un.sun_path)) {
491: log_warnx("socket '%s' too long", ldap->ldap_host);
492: goto done;
493: }
494: if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1 ||
495: connect(fd, (struct sockaddr *)&un, sizeof(un)) == -1)
496: goto done;
497: goto init;
498: }
499:
500: memset(&ai, 0, sizeof(ai));
501: ai.ai_family = AF_UNSPEC;
502: ai.ai_socktype = SOCK_STREAM;
503: ai.ai_protocol = IPPROTO_TCP;
504: (void)snprintf(port, sizeof(port), "%u", ldap->ldap_port);
505: if ((code = getaddrinfo(ldap->ldap_host, port,
506: &ai, &res0)) != 0) {
507: log_warnx("%s", gai_strerror(code));
508: goto done;
509: }
510: for (res = res0; res; res = res->ai_next, fd = -1) {
511: if ((fd = socket(res->ai_family, res->ai_socktype,
512: res->ai_protocol)) == -1)
513: continue;
514:
515: if (connect(fd, res->ai_addr, res->ai_addrlen) >= 0)
516: break;
517:
518: saved_errno = errno;
519: close(fd);
520: errno = saved_errno;
521: }
522: freeaddrinfo(res0);
523: if (fd == -1)
524: goto done;
525:
526: init:
527: if ((ldap->ldap_al = aldap_init(fd)) == NULL) {
528: warn("LDAP init failed");
529: close(fd);
530: goto done;
531: }
532:
533: if (ldap->ldap_flags & F_STARTTLS) {
534: log_debug("%s: requesting STARTTLS", __func__);
535: if (aldap_req_starttls(ldap->ldap_al) == -1) {
536: log_warnx("failed to request STARTTLS");
537: goto done;
538: }
539:
540: if ((m = aldap_parse(ldap->ldap_al)) == NULL) {
541: log_warnx("failed to parse STARTTLS response");
542: goto done;
543: }
544:
545: if (ldap->ldap_al->msgid != m->msgid ||
546: (code = aldap_get_resultcode(m)) != LDAP_SUCCESS) {
547: log_warnx("STARTTLS failed: %s(%d)",
548: ldapc_resultcode(code), code);
549: aldap_freemsg(m);
550: goto done;
551: }
552: aldap_freemsg(m);
553: }
554:
555: if (ldap->ldap_flags & (F_STARTTLS | F_TLS)) {
556: log_debug("%s: starting TLS", __func__);
557:
558: if ((tls_config = tls_config_new()) == NULL) {
559: log_warnx("TLS config failed");
560: goto done;
561: }
562:
563: if (tls_config_set_ca_file(tls_config,
564: ldap->ldap_capath) == -1) {
565: log_warnx("unable to set CA %s", ldap->ldap_capath);
566: goto done;
567: }
568:
569: if (aldap_tls(ldap->ldap_al, tls_config, ldap->ldap_host) < 0) {
570: aldap_get_errno(ldap->ldap_al, &errstr);
571: log_warnx("TLS failed: %s", errstr);
572: goto done;
573: }
574: }
575:
576: if (ldap->ldap_flags & F_NEEDAUTH) {
577: log_debug("%s: bind request", __func__);
578: if (aldap_bind(ldap->ldap_al, ldap->ldap_binddn,
579: ldap->ldap_secret) == -1) {
580: log_warnx("bind request failed");
581: goto done;
582: }
583:
584: if ((m = aldap_parse(ldap->ldap_al)) == NULL) {
585: log_warnx("failed to parse bind response");
586: goto done;
587: }
588:
589: if (ldap->ldap_al->msgid != m->msgid ||
590: (code = aldap_get_resultcode(m)) != LDAP_SUCCESS) {
591: log_warnx("bind failed: %s(%d)",
592: ldapc_resultcode(code), code);
593: aldap_freemsg(m);
594: goto done;
595: }
596: aldap_freemsg(m);
597: }
598:
599: log_debug("%s: connected", __func__);
600:
601: ret = 0;
602: done:
603: if (ret != 0)
604: ldapc_disconnect(ldap);
605: if (ldap->ldap_secret != NULL)
606: explicit_bzero(ldap->ldap_secret,
607: strlen(ldap->ldap_secret));
608: return (ret);
609: }
610:
611: void
612: ldapc_disconnect(struct ldapc *ldap)
613: {
614: if (ldap->ldap_al == NULL)
615: return;
616: aldap_close(ldap->ldap_al);
617: ldap->ldap_al = NULL;
618: }
619:
620: const char *
621: ldapc_resultcode(enum result_code code)
622: {
623: #define CODE(_X) case _X:return (#_X)
624: switch (code) {
625: CODE(LDAP_SUCCESS);
626: CODE(LDAP_OPERATIONS_ERROR);
627: CODE(LDAP_PROTOCOL_ERROR);
628: CODE(LDAP_TIMELIMIT_EXCEEDED);
629: CODE(LDAP_SIZELIMIT_EXCEEDED);
630: CODE(LDAP_COMPARE_FALSE);
631: CODE(LDAP_COMPARE_TRUE);
632: CODE(LDAP_STRONG_AUTH_NOT_SUPPORTED);
633: CODE(LDAP_STRONG_AUTH_REQUIRED);
634: CODE(LDAP_REFERRAL);
635: CODE(LDAP_ADMINLIMIT_EXCEEDED);
636: CODE(LDAP_UNAVAILABLE_CRITICAL_EXTENSION);
637: CODE(LDAP_CONFIDENTIALITY_REQUIRED);
638: CODE(LDAP_SASL_BIND_IN_PROGRESS);
639: CODE(LDAP_NO_SUCH_ATTRIBUTE);
640: CODE(LDAP_UNDEFINED_TYPE);
641: CODE(LDAP_INAPPROPRIATE_MATCHING);
642: CODE(LDAP_CONSTRAINT_VIOLATION);
643: CODE(LDAP_TYPE_OR_VALUE_EXISTS);
644: CODE(LDAP_INVALID_SYNTAX);
645: CODE(LDAP_NO_SUCH_OBJECT);
646: CODE(LDAP_ALIAS_PROBLEM);
647: CODE(LDAP_INVALID_DN_SYNTAX);
648: CODE(LDAP_ALIAS_DEREF_PROBLEM);
649: CODE(LDAP_INAPPROPRIATE_AUTH);
650: CODE(LDAP_INVALID_CREDENTIALS);
651: CODE(LDAP_INSUFFICIENT_ACCESS);
652: CODE(LDAP_BUSY);
653: CODE(LDAP_UNAVAILABLE);
654: CODE(LDAP_UNWILLING_TO_PERFORM);
655: CODE(LDAP_LOOP_DETECT);
656: CODE(LDAP_NAMING_VIOLATION);
657: CODE(LDAP_OBJECT_CLASS_VIOLATION);
658: CODE(LDAP_NOT_ALLOWED_ON_NONLEAF);
659: CODE(LDAP_NOT_ALLOWED_ON_RDN);
660: CODE(LDAP_ALREADY_EXISTS);
661: CODE(LDAP_NO_OBJECT_CLASS_MODS);
662: CODE(LDAP_AFFECTS_MULTIPLE_DSAS);
663: CODE(LDAP_OTHER);
664: default:
665: return ("UNKNOWN_ERROR");
666: }
667: };
668:
669: int
670: ldapc_parseurl(struct ldapc *ldap, struct ldapc_search *ls, const char *url)
671: {
672: struct aldap_url *lu = &ldap->ldap_url;
673: size_t i;
674:
675: memset(lu, 0, sizeof(*lu));
676: lu->scope = -1;
677:
678: if (aldap_parse_url(url, lu) == -1) {
679: log_warnx("failed to parse LDAP URL");
680: return (-1);
681: }
682:
683: /* The protocol part is optional and we default to ldap:// */
684: if (lu->protocol == -1)
685: lu->protocol = LDAP;
686: else if (lu->protocol == LDAPI) {
687: if (lu->port != 0 ||
688: url_decode(lu->host) == NULL) {
689: log_warnx("invalid ldapi:// URL");
690: return (-1);
691: }
692: } else if ((ldap->ldap_flags & F_STARTTLS) &&
693: lu->protocol != LDAPTLS) {
694: log_warnx("conflicting protocol arguments");
695: return (-1);
696: } else if (lu->protocol == LDAPTLS)
697: ldap->ldap_flags |= F_TLS|F_STARTTLS;
698: else if (lu->protocol == LDAPS)
699: ldap->ldap_flags |= F_TLS;
700: ldap->ldap_protocol = lu->protocol;
701:
702: ldap->ldap_host = lu->host;
703: if (lu->port)
704: ldap->ldap_port = lu->port;
705:
706: /* The distinguished name has to be URL-encoded */
707: if (lu->dn != NULL && ls->ls_basedn != NULL &&
708: strcasecmp(ls->ls_basedn, lu->dn) != 0) {
709: log_warnx("conflicting basedn arguments");
710: return (-1);
711: }
712: if (lu->dn != NULL) {
713: if (url_decode(lu->dn) == NULL)
714: return (-1);
715: ls->ls_basedn = lu->dn;
716: }
717:
718: if (lu->scope != -1) {
719: if (ls->ls_scope != -1 && (ls->ls_scope != lu->scope)) {
720: log_warnx("conflicting scope arguments");
721: return (-1);
722: }
723: ls->ls_scope = lu->scope;
724: }
725:
726: /* URL-decode optional attributes and the search filter */
727: if (lu->attributes[0] != NULL) {
728: for (i = 0; i < MAXATTR && lu->attributes[i] != NULL; i++)
729: if (url_decode(lu->attributes[i]) == NULL)
730: return (-1);
731: ls->ls_attr = lu->attributes;
732: }
733: if (lu->filter != NULL) {
734: if (url_decode(lu->filter) == NULL)
735: return (-1);
736: ls->ls_filter = lu->filter;
737: }
738:
739: return (0);
740: }
741:
742: /* From usr.sbin/httpd/httpd.c */
743: const char *
744: url_decode(char *url)
745: {
746: char *p, *q;
747: char hex[3];
748: unsigned long x;
749:
750: hex[2] = '\0';
751: p = q = url;
752:
753: while (*p != '\0') {
754: switch (*p) {
755: case '%':
756: /* Encoding character is followed by two hex chars */
757: if (!(isxdigit((unsigned char)p[1]) &&
758: isxdigit((unsigned char)p[2])))
759: return (NULL);
760:
761: hex[0] = p[1];
762: hex[1] = p[2];
763:
764: /*
765: * We don't have to validate "hex" because it is
766: * guaranteed to include two hex chars followed by nul.
767: */
768: x = strtoul(hex, NULL, 16);
769: *q = (char)x;
770: p += 2;
771: break;
772: default:
773: *q = *p;
774: break;
775: }
776: p++;
777: q++;
778: }
779: *q = '\0';
780:
781: return (url);
782: }