Annotation of libwww/Library/src/HTAABrow.c, revision 2.22
2.15 frystyk 1: /* HTAABrow.c
2.1 luotonen 2: ** BROWSER SIDE ACCESS AUTHORIZATION MODULE
2.15 frystyk 3: **
2.19 frystyk 4: ** (c) COPYRIGHT MIT 1995.
2.15 frystyk 5: ** Please first read the full copyright statement in the file COPYRIGH.
2.1 luotonen 6: **
7: ** Containts the code for keeping track on server hostnames,
8: ** port numbers, scheme names, usernames, passwords
9: ** (and servers' public keys).
10: **
11: ** IMPORTANT:
12: ** Routines in this module use dynamic allocation, but free
13: ** automatically all the memory reserved by them.
14: **
15: ** Therefore the caller never has to (and never should)
16: ** free() any object returned by these functions.
17: **
18: ** Therefore also all the strings returned by this package
19: ** are only valid until the next call to the same function
20: ** is made. This approach is selected, because of the nature
21: ** of access authorization: no string returned by the package
22: ** needs to be valid longer than until the next call.
23: **
24: ** This also makes it easy to plug the AA package in:
25: ** you don't have to ponder whether to free() something
26: ** here or is it done somewhere else (because it is always
27: ** done somewhere else).
28: **
29: ** The strings that the package needs to store are copied
30: ** so the original strings given as parameters to AA
31: ** functions may be freed or modified with no side effects.
32: **
33: ** The AA package does not free() anything else than what
34: ** it has itself allocated.
35: **
36: ** AUTHORS:
37: ** AL Ari Luotonen luotonen@dxcern.cern.ch
38: **
39: ** HISTORY:
2.5 luotonen 40: ** Oct 17 AL Made corrections suggested by marca:
41: ** Added if (!realm->username) return NULL;
42: ** Changed some ""s to NULLs.
43: ** Now doing calloc() to init uuencode source;
44: ** otherwise HTUU_encode() reads uninitialized memory
45: ** every now and then (not a real bug but not pretty).
46: ** Corrected the formula for uuencode destination size.
2.1 luotonen 47: ** BUGS:
48: **
49: **
50: */
51:
2.17 frystyk 52: /* Library include files */
53: #include "tcp.h"
2.1 luotonen 54: #include "HTUtils.h"
55: #include "HTString.h"
56: #include "HTParse.h" /* URL parsing function */
57: #include "HTList.h" /* HTList object */
58: #include "HTAlert.h" /* HTConfirm(), HTPrompt() */
59: #include "HTAAUtil.h" /* AA common to both sides */
2.2 luotonen 60: #include "HTAssoc.h" /* Assoc list */
2.1 luotonen 61: #include "HTAABrow.h" /* Implemented here */
62: #include "HTUU.h" /* Uuencoding and uudecoding */
2.7 luotonen 63: #include "HTAccess.h" /* HTRequest structure */
2.1 luotonen 64:
65:
66: /*
67: ** Module-wide global variables
68: */
69:
70: PRIVATE HTList *server_table = NULL; /* Browser's info about servers */
2.7 luotonen 71:
2.1 luotonen 72:
73: /**************************** HTAAServer ***********************************/
74:
75:
76: /* PRIVATE HTAAServer_new()
77: ** ALLOCATE A NEW NODE TO HOLD SERVER INFO
78: ** AND ADD IT TO THE LIST OF SERVERS
79: ** ON ENTRY:
80: ** hostname is the name of the host that the server
81: ** is running in.
82: ** portnumber is the portnumber which the server listens.
83: **
84: ** ON EXIT:
85: ** returns the newly-allocated node with all the strings
86: ** duplicated.
87: ** Strings will be automatically freed by
88: ** the function HTAAServer_delete(), which also
89: ** frees the node itself.
90: */
91: PRIVATE HTAAServer *HTAAServer_new ARGS2(CONST char*, hostname,
92: int, portnumber)
93: {
94: HTAAServer *server;
95:
96: if (!(server = (HTAAServer *)malloc(sizeof(HTAAServer))))
97: outofmem(__FILE__, "HTAAServer_new");
98:
99: server->hostname = NULL;
100: server->portnumber = (portnumber > 0 ? portnumber : 80);
101: server->setups = HTList_new();
2.4 luotonen 102: server->realms = HTList_new();
2.1 luotonen 103:
104: if (hostname) StrAllocCopy(server->hostname, hostname);
105:
106: if (!server_table) server_table = HTList_new();
107:
108: HTList_addObject(server_table, (void*)server);
109:
110: return server;
111: }
112:
113:
114: /* PRIVATE HTAAServer_delete()
115: **
116: ** DELETE THE ENTRY FOR THE SERVER FROM THE HOST TABLE,
117: ** AND FREE THE MEMORY USED BY IT.
118: **
119: ** ON ENTRY:
120: ** killme points to the HTAAServer to be freed.
121: **
122: ** ON EXIT:
123: ** returns nothing.
124: */
125: #ifdef NOT_NEEDED_IT_SEEMS
126: PRIVATE void HTAASetup_delete(); /* Forward */
127: PRIVATE void HTAAServer_delete ARGS1(HTAAServer *, killme)
128: {
129: if (killme) {
2.4 luotonen 130: HTList *cur1 = killme->setups;
131: HTList *cur2 = killme->realms;
2.1 luotonen 132: HTAASetup *setup;
2.4 luotonen 133: HTAARealm *realm;
2.1 luotonen 134:
2.4 luotonen 135: while (NULL != (setup = (HTAASetup*)HTList_nextObject(cur1)))
2.1 luotonen 136: HTAASetup_delete(setup);
137: HTList_delete(killme->setups);
138:
2.4 luotonen 139: while (NULL != (realm = (HTAARealm*)HTList_nextObject(cur2)))
140: ; /* This sould free() the realm */
141: HTList_delete(killme->realms);
142:
2.1 luotonen 143: FREE(killme->hostname);
144:
145: HTList_removeObject(server_table, (void*)killme);
146:
147: free(killme);
148: }
149: }
150: #endif /*NOT_NEEDED_IT_SEEMS*/
151:
152:
153: /* PRIVATE HTAAServer_lookup()
154: ** LOOK UP SERVER BY HOSTNAME AND PORTNUMBER
155: ** ON ENTRY:
156: ** hostname obvious.
157: ** portnumber if non-positive defaults to 80.
158: **
159: ** Looks up the server in the module-global server_table.
160: **
161: ** ON EXIT:
162: ** returns pointer to a HTAAServer structure
163: ** representing the looked-up server.
164: ** NULL, if not found.
165: */
166: PRIVATE HTAAServer *HTAAServer_lookup ARGS2(CONST char *, hostname,
167: int, portnumber)
168: {
169: if (hostname) {
170: HTList *cur = server_table;
171: HTAAServer *server;
172:
173: if (portnumber <= 0) portnumber = 80;
174:
175: while (NULL != (server = (HTAAServer*)HTList_nextObject(cur))) {
176: if (server->portnumber == portnumber &&
177: 0==strcmp(server->hostname, hostname))
178: return server;
179: }
180: }
181: return NULL; /* NULL parameter, or not found */
182: }
183:
184:
185:
186:
187: /*************************** HTAASetup *******************************/
188:
189:
190: /* PRIVATE HTAASetup_lookup()
191: ** FIGURE OUT WHICH AUTHENTICATION SETUP THE SERVER
192: ** IS USING FOR A GIVEN FILE ON A GIVEN HOST AND PORT
193: **
194: ** ON ENTRY:
195: ** hostname is the name of the server host machine.
196: ** portnumber is the port that the server is running in.
197: ** docname is the (URL-)pathname of the document we
198: ** are trying to access.
199: **
200: ** This function goes through the information known about
201: ** all the setups of the server, and finds out if the given
202: ** filename resides in one of the protected directories.
203: **
204: ** ON EXIT:
205: ** returns NULL if no match.
206: ** Otherwise, a HTAASetup structure representing
207: ** the protected server setup on the corresponding
208: ** document tree.
209: **
210: */
211: PRIVATE HTAASetup *HTAASetup_lookup ARGS3(CONST char *, hostname,
212: int, portnumber,
213: CONST char *, docname)
214: {
215: HTAAServer *server;
216: HTAASetup *setup;
217:
218: if (portnumber <= 0) portnumber = 80;
219:
220: if (hostname && docname && *hostname && *docname &&
221: NULL != (server = HTAAServer_lookup(hostname, portnumber))) {
222:
223: HTList *cur = server->setups;
224:
2.21 frystyk 225: if (TRACE)
226: fprintf(TDEST, "Access Auth. resolving setup for (%s:%d:%s)\n",
227: hostname, portnumber, docname);
2.1 luotonen 228:
229: while (NULL != (setup = (HTAASetup*)HTList_nextObject(cur))) {
2.13 frystyk 230: if (HTAA_templateMatch(setup->tmplate, docname)) {
2.21 frystyk 231: if (TRACE)
232: fprintf(TDEST, "Access Auth. `%s' matched template `%s'\n",
233: docname, setup->tmplate);
2.1 luotonen 234: return setup;
235: }
2.17 frystyk 236: else if (TRACE) fprintf(TDEST, "%s `%s' %s `%s'\n",
2.1 luotonen 237: "HTAASetup_lookup:", docname,
2.13 frystyk 238: "did NOT match template", setup->tmplate);
2.1 luotonen 239: } /* while setups remain */
240: } /* if valid parameters and server found */
241:
2.21 frystyk 242: if (TRACE)
243: fprintf(TDEST, "Access Auth. `%s' (so probably not protected)\n",
244: (docname ? docname : "(null)"));
245: return NULL; /* NULL in parameters, or not found */
2.1 luotonen 246: }
247:
248:
249:
250:
251: /* PRIVATE HTAASetup_new()
252: ** CREATE A NEW SETUP NODE
253: ** ON ENTRY:
254: ** server is a pointer to a HTAAServer structure
255: ** to which this setup belongs.
256: ** template documents matching this template
257: ** are protected according to this setup.
2.2 luotonen 258: ** valid_schemes a list containing all valid authentication
259: ** schemes for this setup.
2.1 luotonen 260: ** If NULL, all schemes are disallowed.
2.2 luotonen 261: ** scheme_specifics is an array of assoc lists, which
262: ** contain scheme specific parameters given
263: ** by server in Authenticate: fields.
2.1 luotonen 264: ** If NULL, all scheme specifics are
265: ** set to NULL.
266: ** ON EXIT:
267: ** returns a new HTAASetup node, and also adds it as
268: ** part of the HTAAServer given as parameter.
269: */
270: PRIVATE HTAASetup *HTAASetup_new ARGS4(HTAAServer *, server,
2.13 frystyk 271: char *, tmplate,
2.2 luotonen 272: HTList *, valid_schemes,
273: HTAssocList **, scheme_specifics)
2.1 luotonen 274: {
275: HTAASetup *setup;
276:
2.13 frystyk 277: if (!server || !tmplate || !*tmplate) return NULL;
2.1 luotonen 278:
279: if (!(setup = (HTAASetup*)malloc(sizeof(HTAASetup))))
280: outofmem(__FILE__, "HTAASetup_new");
281:
2.7 luotonen 282: setup->reprompt = NO;
2.1 luotonen 283: setup->server = server;
2.13 frystyk 284: setup->tmplate = NULL;
285: if (tmplate) StrAllocCopy(setup->tmplate, tmplate);
2.2 luotonen 286: setup->valid_schemes = valid_schemes;
287: setup->scheme_specifics = scheme_specifics;
2.1 luotonen 288:
2.2 luotonen 289: HTList_addObject(server->setups, (void*)setup);
2.1 luotonen 290:
291: return setup;
292: }
293:
294:
295:
296: /* PRIVATE HTAASetup_delete()
297: ** FREE A HTAASetup STRUCTURE
298: ** ON ENTRY:
299: ** killme is a pointer to the structure to free().
300: **
301: ** ON EXIT:
302: ** returns nothing.
303: */
304: #ifdef NOT_NEEDED_IT_SEEMS
305: PRIVATE void HTAASetup_delete ARGS1(HTAASetup *, killme)
306: {
2.2 luotonen 307: int scheme;
2.1 luotonen 308:
309: if (killme) {
2.13 frystyk 310: if (killme->tmplate) free(killme->tmplate);
2.2 luotonen 311: if (killme->valid_schemes)
312: HTList_delete(killme->valid_schemes);
313: for (scheme=0; scheme < HTAA_MAX_SCHEMES; scheme++)
314: if (killme->scheme_specifics[scheme])
315: HTAssocList_delete(killme->scheme_specifics[scheme]);
2.1 luotonen 316: free(killme);
317: }
318: }
319: #endif /*NOT_NEEDED_IT_SEEMS*/
320:
321:
322:
323: /* PRIVATE HTAASetup_updateSpecifics()
324: * COPY SCHEME SPECIFIC PARAMETERS
325: ** TO HTAASetup STRUCTURE
326: ** ON ENTRY:
327: ** setup destination setup structure.
328: ** specifics string array containing scheme
329: ** specific parameters for each scheme.
330: ** If NULL, all the scheme specific
331: ** parameters are set to NULL.
332: **
333: ** ON EXIT:
334: ** returns nothing.
335: */
2.2 luotonen 336: PRIVATE void HTAASetup_updateSpecifics ARGS2(HTAASetup *, setup,
337: HTAssocList **, specifics)
2.1 luotonen 338: {
2.2 luotonen 339: int scheme;
2.1 luotonen 340:
2.2 luotonen 341: if (setup) {
342: if (setup->scheme_specifics) {
343: for (scheme=0; scheme < HTAA_MAX_SCHEMES; scheme++) {
344: if (setup->scheme_specifics[scheme])
345: HTAssocList_delete(setup->scheme_specifics[scheme]);
346: }
347: free(setup->scheme_specifics);
348: }
349: setup->scheme_specifics = specifics;
2.1 luotonen 350: }
351: }
352:
353:
354:
355:
356: /*************************** HTAARealm **********************************/
357:
358: /* PRIVATE HTAARealm_lookup()
359: ** LOOKUP HTAARealm STRUCTURE BY REALM NAME
360: ** ON ENTRY:
2.4 luotonen 361: ** realm_table a list of realm objects.
2.1 luotonen 362: ** realmname is the name of realm to look for.
363: **
364: ** ON EXIT:
365: ** returns the realm. NULL, if not found.
366: */
2.4 luotonen 367: PRIVATE HTAARealm *HTAARealm_lookup ARGS2(HTList *, realm_table,
368: CONST char *, realmname)
2.1 luotonen 369: {
370: if (realm_table && realmname) {
371: HTList *cur = realm_table;
372: HTAARealm *realm;
373:
374: while (NULL != (realm = (HTAARealm*)HTList_nextObject(cur))) {
375: if (0==strcmp(realm->realmname, realmname))
376: return realm;
377: }
378: }
379: return NULL; /* No table, NULL param, or not found */
380: }
381:
382:
383:
384: /* PRIVATE HTAARealm_new()
385: ** CREATE A NODE CONTAINING USERNAME AND
386: ** PASSWORD USED FOR THE GIVEN REALM.
387: ** IF REALM ALREADY EXISTS, CHANGE
388: ** USERNAME/PASSWORD.
389: ** ON ENTRY:
2.4 luotonen 390: ** realm_table a list of realms to where to add
391: ** the new one, too.
2.1 luotonen 392: ** realmname is the name of the password domain.
393: ** username and
394: ** password are what you can expect them to be.
395: **
396: ** ON EXIT:
397: ** returns the created realm.
398: */
2.4 luotonen 399: PRIVATE HTAARealm *HTAARealm_new ARGS4(HTList *, realm_table,
400: CONST char *, realmname,
2.1 luotonen 401: CONST char *, username,
402: CONST char *, password)
403: {
404: HTAARealm *realm;
405:
2.4 luotonen 406: realm = HTAARealm_lookup(realm_table, realmname);
2.1 luotonen 407:
408: if (!realm) {
409: if (!(realm = (HTAARealm*)malloc(sizeof(HTAARealm))))
410: outofmem(__FILE__, "HTAARealm_new");
411: realm->realmname = NULL;
412: realm->username = NULL;
413: realm->password = NULL;
414: StrAllocCopy(realm->realmname, realmname);
2.4 luotonen 415: if (realm_table) HTList_addObject(realm_table, (void*)realm);
2.1 luotonen 416: }
417: if (username) StrAllocCopy(realm->username, username);
418: if (password) StrAllocCopy(realm->password, password);
419:
420: return realm;
421: }
422:
423:
424:
425:
426: /***************** Basic and Pubkey Authentication ************************/
427:
2.7 luotonen 428: /* PRIVATE compose_Basic_auth()
2.1 luotonen 429: **
2.7 luotonen 430: ** COMPOSE Basic SCHEME AUTHENTICATION STRING
2.1 luotonen 431: **
432: ** ON ENTRY:
2.7 luotonen 433: ** req request, where
434: ** req->scheme == HTAA_BASIC
435: ** req->realm contains username and password.
2.1 luotonen 436: **
437: ** ON EXIT:
438: ** returns a newly composed authorization string,
2.5 luotonen 439: ** NULL, if something fails.
2.1 luotonen 440: ** NOTE:
441: ** Like throughout the entire AA package, no string or structure
442: ** returned by AA package needs to (or should) be freed.
443: **
444: */
2.7 luotonen 445: PRIVATE char *compose_Basic_auth ARGS1(HTRequest *, req)
2.1 luotonen 446: {
447: static char *result = NULL; /* Uuencoded presentation, the result */
448: char *cleartext = NULL; /* Cleartext presentation */
449: int len;
450:
451: FREE(result); /* From previous call */
452:
2.7 luotonen 453: if (!req || req->scheme != HTAA_BASIC || !req->setup ||
454: !req->setup->server)
2.5 luotonen 455: return NULL;
2.1 luotonen 456:
2.7 luotonen 457: if (!req->realm) {
458: char *realmname;
2.1 luotonen 459:
2.7 luotonen 460: if (!req->setup || !req->setup->scheme_specifics ||
461: !(realmname =
462: HTAssocList_lookup(req->setup->scheme_specifics[HTAA_BASIC],
463: "realm")))
464: return NULL;
465:
466: req->realm = HTAARealm_lookup(req->setup->server->realms, realmname);
467: if (!req->realm) {
468: req->realm = HTAARealm_new(req->setup->server->realms,
469: realmname, NULL, NULL);
470: return NULL;
2.1 luotonen 471: }
472: }
473:
2.7 luotonen 474: len = strlen(req->realm->username ? req->realm->username : "") +
475: strlen(req->realm->password ? req->realm->password : "") + 3;
2.1 luotonen 476:
2.5 luotonen 477: if (!(cleartext = (char*)calloc(len, 1)))
2.7 luotonen 478: outofmem(__FILE__, "compose_Basic_auth");
2.1 luotonen 479:
2.7 luotonen 480: if (req->realm->username) strcpy(cleartext, req->realm->username);
2.3 luotonen 481: else *cleartext = (char)0;
2.1 luotonen 482:
483: strcat(cleartext, ":");
484:
2.7 luotonen 485: if (req->realm->password) strcat(cleartext, req->realm->password);
486:
487: if (!(result = (char*)malloc(4 * ((len+2)/3) + 1)))
488: outofmem(__FILE__, "compose_Basic_auth");
489: HTUU_encode((unsigned char *)cleartext, strlen(cleartext), result);
490: free(cleartext);
2.1 luotonen 491:
492: return result;
493: }
494:
495:
496:
497: /* BROWSER PRIVATE HTAA_selectScheme()
498: ** SELECT THE AUTHENTICATION SCHEME TO USE
499: ** ON ENTRY:
500: ** setup is the server setup structure which can
501: ** be used to make the decision about the
502: ** used scheme.
503: **
504: ** When new authentication methods are added to library
505: ** this function makes the decision about which one to
506: ** use at a given time. This can be done by inspecting
507: ** environment variables etc.
508: **
2.2 luotonen 509: ** Currently only searches for the first valid scheme,
510: ** and if nothing found suggests Basic scheme;
511: **
2.1 luotonen 512: ** ON EXIT:
513: ** returns the authentication scheme to use.
514: */
515: PRIVATE HTAAScheme HTAA_selectScheme ARGS1(HTAASetup *, setup)
516: {
2.14 frystyk 517: HTAAScheme scheme;
2.2 luotonen 518: if (setup && setup->valid_schemes) {
2.14 frystyk 519: for (scheme = HTAA_BASIC; scheme < HTAA_MAX_SCHEMES; scheme++)
2.13 frystyk 520: if (-1 < HTList_indexOf(setup->valid_schemes, (void *) scheme))
521: return (HTAAScheme) scheme;
2.2 luotonen 522: }
2.7 luotonen 523: return HTAA_NONE;
2.1 luotonen 524: }
525:
526:
527:
528:
529: /* BROWSER PUBLIC HTAA_composeAuth()
530: **
2.7 luotonen 531: ** COMPOSE Authorization: HEADER LINE CONTENTS
2.1 luotonen 532: ** IF WE ALREADY KNOW THAT THE HOST REQUIRES AUTHENTICATION
533: **
534: ** ON ENTRY:
2.7 luotonen 535: ** req request, which contains
536: ** req->setup protection setup info on browser.
537: ** req->scheme selected authentication scheme.
538: ** req->realm for Basic scheme the username and password.
539: **
540: ** ON EXIT:
541: ** returns NO, if no authorization seems to be needed, and
542: ** req->authorization is NULL.
543: ** YES, if it has composed Authorization field,
544: ** in which case the result is in req->authorization,
545: ** e.g.
546: **
547: ** "Basic AkRDIhEF8sdEgs72F73bfaS=="
548: */
549: PUBLIC BOOL HTAA_composeAuth ARGS1(HTRequest *, req)
550: {
551: char *auth_string = NULL;
552: static char *docname;
553: static char *hostname;
554: int portnumber;
555: char *colon;
556: char *gate = NULL; /* Obsolite? */
2.9 luotonen 557: char *arg = NULL;
2.7 luotonen 558:
559: FREE(hostname); /* From previous call */
560: FREE(docname); /* - " - */
2.5 luotonen 561:
2.9 luotonen 562: if (!req || !req->anchor)
2.7 luotonen 563: return NO;
2.1 luotonen 564:
2.9 luotonen 565: arg = HTAnchor_physical(req->anchor);
566: docname = HTParse(arg, "", PARSE_PATH);
567: hostname = HTParse((gate ? gate : arg), "", PARSE_HOST);
2.7 luotonen 568: if (hostname &&
569: NULL != (colon = strchr(hostname, ':'))) {
570: *(colon++) = '\0'; /* Chop off port number */
571: portnumber = atoi(colon);
572: }
573: else portnumber = 80;
574:
2.21 frystyk 575: if (TRACE)
576: fprintf(TDEST, "Access Auth. composing authorization for %s:%d/%s\n",
577: hostname, portnumber, docname);
2.1 luotonen 578:
2.7 luotonen 579: #ifdef OLD_CODE
2.1 luotonen 580: if (current_portnumber != portnumber ||
581: !current_hostname || !current_docname ||
582: !hostname || !docname ||
583: 0 != strcmp(current_hostname, hostname) ||
584: 0 != strcmp(current_docname, docname)) {
585:
586: retry = NO;
587:
588: current_portnumber = portnumber;
589:
590: if (hostname) StrAllocCopy(current_hostname, hostname);
591: else FREE(current_hostname);
592:
593: if (docname) StrAllocCopy(current_docname, docname);
594: else FREE(current_docname);
595: }
596: else retry = YES;
2.7 luotonen 597: #endif /*OLD_CODE*/
2.1 luotonen 598:
2.7 luotonen 599: if (!req->setup)
600: req->setup = HTAASetup_lookup(hostname, portnumber, docname);
601: if (!req->setup)
602: return NO;
2.1 luotonen 603:
2.12 frystyk 604: if (req->scheme == HTAA_NONE || req->scheme == HTAA_UNKNOWN)
2.7 luotonen 605: req->scheme = HTAA_selectScheme(req->setup);
2.1 luotonen 606:
2.7 luotonen 607: switch (req->scheme) {
2.1 luotonen 608: case HTAA_BASIC:
2.7 luotonen 609: auth_string = compose_Basic_auth(req);
610: break;
2.1 luotonen 611: case HTAA_PUBKEY:
612: case HTAA_KERBEROS_V4:
613: /* OTHER AUTHENTICATION ROUTINES ARE CALLED HERE */
614: default:
615: {
616: char msg[100];
617: sprintf(msg, "%s %s `%s'",
618: "This client doesn't know how to compose authentication",
2.7 luotonen 619: "information for scheme", HTAAScheme_name(req->scheme));
2.22 ! frystyk 620: HTAlert(req, msg);
2.5 luotonen 621: auth_string = NULL;
2.1 luotonen 622: }
623: } /* switch scheme */
624:
2.7 luotonen 625: req->setup->reprompt = NO;
2.1 luotonen 626:
2.5 luotonen 627: /* Added by marca. */
628: if (!auth_string)
2.7 luotonen 629: return NO;
2.5 luotonen 630:
2.11 frystyk 631: FREE(req->authorization); /* Free from previous call, Henrik 14/03-94 */
2.7 luotonen 632: if (!(req->authorization =
633: (char*)malloc(sizeof(char) * (strlen(auth_string)+40))))
2.1 luotonen 634: outofmem(__FILE__, "HTAA_composeAuth");
635:
2.7 luotonen 636: strcpy(req->authorization, HTAAScheme_name(req->scheme));
637: strcat(req->authorization, " ");
638: strcat(req->authorization, auth_string);
2.1 luotonen 639:
2.7 luotonen 640: return YES;
641: }
2.1 luotonen 642:
2.5 luotonen 643:
2.7 luotonen 644: /* BROWSER OVERLOADED HTPasswordDialog()
645: **
646: ** PROMPT USERNAME AND PASSWORD, AND MAKE A
647: ** CALLBACK TO FUNCTION HTLoadHTTP().
2.1 luotonen 648: **
2.7 luotonen 649: ** This function must be redifined by GUI clients, which
650: ** call HTLoadHTTP(req) when user presses "Ok".
2.1 luotonen 651: **
2.7 luotonen 652: ** ON ENTRY:
653: ** req request.
654: ** req->dialog_msg prompting message.
655: ** req->setup information about protections of this request.
656: ** req->realm structure describing one password realm.
2.1 luotonen 657: ** This function should only be called when
658: ** server has replied with a 401 (Unauthorized)
2.7 luotonen 659: ** status code, and req structure has been filled
660: ** up according to server reply, especially the
661: ** req->valid_shemes list must have been set up
662: ** according to WWW-Authenticate: headers.
2.1 luotonen 663: ** ON EXIT:
2.7 luotonen 664: **
2.14 frystyk 665: ** returns YES or NO
2.7 luotonen 666: **
667: */
2.18 frystyk 668: PUBLIC BOOL HTPasswordDialog ARGS1(HTRequest *, req)
2.1 luotonen 669: {
2.14 frystyk 670: if (!req || !req->setup || !req->realm || !req->dialog_msg) {
2.22 ! frystyk 671: if (PROT_TRACE)
! 672: fprintf(TDEST, "Access...... called with an illegal parameter");
2.14 frystyk 673: return NO;
2.7 luotonen 674: }
675: if (req->setup->reprompt &&
2.22 ! frystyk 676: HTConfirm(req, "Authorization failed. Retry?") != YES) {
2.14 frystyk 677: return NO;
678: } else {
2.7 luotonen 679: char *username = req->realm->username;
680: char *password = NULL;
2.1 luotonen 681:
2.22 ! frystyk 682: HTPromptUsernameAndPassword(req,req->dialog_msg, &username, &password);
2.1 luotonen 683:
2.7 luotonen 684: if (req->realm->username) free(req->realm->username);
685: if (req->realm->password) free(req->realm->password);
686: req->realm->username = username;
687: req->realm->password = password;
2.14 frystyk 688: if (!req->realm->username)
689: return NO; /* Suggested by marca; thanks! */
2.1 luotonen 690:
2.14 frystyk 691: return YES;
2.7 luotonen 692: }
2.14 frystyk 693: return NO;
2.7 luotonen 694: }
2.1 luotonen 695:
696:
697:
2.7 luotonen 698: /* BROWSER PUBLIC HTAA_retryWithAuth()
699: **
700: ** RETRY THE SERVER WITH AUTHORIZATION (OR IF
701: ** ALREADY RETRIED, WITH A DIFFERENT USERNAME
702: ** AND/OR PASSWORD (IF MISSPELLED)) OR CANCEL
703: ** ON ENTRY:
704: ** req request.
705: ** req->valid_schemes
706: ** This function should only be called when
707: ** server has replied with a 401 (Unauthorized)
708: ** status code, and req structure has been filled
709: ** up according to server reply, especially the
710: ** req->valid_shemes list must have been set up
711: ** according to WWW-Authenticate: headers.
712: ** ON EXIT:
713: ** On GUI clients pops up a username/password dialog box
714: ** with "Ok" and "Cancel".
715: ** "Ok" button press should do a callback
716: **
717: ** HTLoadHTTP(req);
718: **
719: ** This actually done by function HTPasswordDialog(),
720: ** which GUI clients redefine.
721: **
722: ** returns YES, if dialog box was popped up.
723: ** NO, on failure.
724: */
2.14 frystyk 725: PUBLIC BOOL HTAA_retryWithAuth ARGS1(HTRequest *, req)
2.7 luotonen 726: {
727: int len;
728: char *realmname;
2.9 luotonen 729: char *arg = NULL;
2.1 luotonen 730:
2.9 luotonen 731: if (!req || !req->anchor ||
2.7 luotonen 732: !req->valid_schemes || HTList_count(req->valid_schemes) == 0) {
733: req->setup = NULL;
2.1 luotonen 734: return NO;
735: }
736:
2.9 luotonen 737: arg = HTAnchor_physical(req->anchor);
738:
2.7 luotonen 739: if (req->setup && req->setup->server) {
2.1 luotonen 740: /* So we have already tried with authorization. */
741: /* Either we don't have access or username or */
742: /* password was misspelled. */
743:
744: /* Update scheme-specific parameters */
745: /* (in case they have expired by chance). */
2.7 luotonen 746: HTAASetup_updateSpecifics(req->setup, req->scheme_specifics);
747: req->scheme = HTAA_selectScheme(req->setup);
748: req->setup->reprompt = YES;
749: }
2.1 luotonen 750: else { /* current_setup == NULL, i.e. we have a */
751: /* first connection to a protected server or */
752: /* the server serves a wider set of documents */
753: /* than we expected so far. */
754:
2.7 luotonen 755: static char *hostname;
756: static char *docname;
757: int portnumber;
758: char *colon;
759: HTAAServer *server;
760:
761: FREE(hostname); /* From previous call */
762: FREE(docname); /* - " - */
763:
2.9 luotonen 764: docname = HTParse(arg, "", PARSE_PATH);
765: hostname = HTParse(arg, "", PARSE_HOST);
2.7 luotonen 766: if (hostname &&
767: NULL != (colon = strchr(hostname, ':'))) {
768: *(colon++) = '\0'; /* Chop off port number */
769: portnumber = atoi(colon);
770: }
771: else portnumber = 80;
772:
2.17 frystyk 773: if (TRACE) fprintf(TDEST,
2.7 luotonen 774: "HTAA_retryWithAuth: first retry of %s:%d/%s\n",
775: hostname, portnumber, docname);
776:
777: if (!(server = HTAAServer_lookup(hostname, portnumber))) {
778: server = HTAAServer_new(hostname, portnumber);
779: }
780: else {
2.22 ! frystyk 781: HTAlert(req, "Access without authorization denied -- retrying");
2.1 luotonen 782: }
783:
2.7 luotonen 784: if (!req->prot_template)
785: req->prot_template = HTAA_makeProtectionTemplate(docname);
786: req->setup = HTAASetup_new(server,
787: req->prot_template,
788: req->valid_schemes,
789: req->scheme_specifics);
790: req->setup->reprompt = NO;
791: req->scheme = HTAA_selectScheme(req->setup);
792:
2.1 luotonen 793: } /* else current_setup == NULL */
794:
2.7 luotonen 795: realmname = HTAssocList_lookup(req->setup->scheme_specifics[req->scheme],
796: "realm");
797: if (!realmname)
798: return NO;
799:
800: req->realm = HTAARealm_lookup(req->setup->server->realms, realmname);
801: if (!req->realm)
802: req->realm = HTAARealm_new(req->setup->server->realms,
803: realmname, NULL, NULL);
804:
805: len = strlen(realmname) + 100;
806: if (req->setup->server->hostname)
807: len += strlen(req->setup->server->hostname);
2.11 frystyk 808:
809: FREE(req->dialog_msg); /* Free from previous call, Henrik 14/03-94 */
2.7 luotonen 810: if (!(req->dialog_msg = (char*)malloc(len)))
811: outofmem(__FILE__, "HTAA_retryWithAuth");
812: if (!req->realm->username)
2.20 frystyk 813: sprintf(req->dialog_msg, "\n%s %s at %s",
2.7 luotonen 814: "Document is protected. Enter username for",
815: req->realm->realmname,
816: req->setup->server->hostname
817: ? req->setup->server->hostname : "??");
2.20 frystyk 818: else sprintf(req->dialog_msg, "\n%s %s at %s",
2.7 luotonen 819: "Authorization failed. Enter username for",
820: req->realm->realmname,
821: req->setup->server->hostname
822: ? req->setup->server->hostname : "??");
2.14 frystyk 823: return (HTPasswordDialog(req));
2.11 frystyk 824: }
825:
826:
827: /* PUPLIC HTAA_cleanup()
828: **
829: ** Free the memory used by the entries concerning Access Authorization
830: ** in the request structure and put all pointers to NULL
831: ** Henrik 14/03-94.
832: **
833: ** ON ENTRY:
834: ** req the request structure
835: **
836: ** ON EXIT:
837: ** returns nothing.
838: */
839: PUBLIC void HTAACleanup ARGS1(HTRequest *, req)
840: {
841: if (req) {
842: FREE(req->authorization);
843: FREE(req->prot_template);
844: FREE(req->dialog_msg);
2.12 frystyk 845: #ifdef OLD_CODE
846: /* Should not be freed as they have become a part of a static
847: memory */
2.11 frystyk 848: if (req->valid_schemes) {
849: HTList_delete(req->valid_schemes);
850: req->valid_schemes = NULL;
851: }
852: if (req->scheme_specifics) {
853: int cnt;
854: for (cnt=0; cnt<HTAA_MAX_SCHEMES; cnt++) {
855: if (req->scheme_specifics[cnt])
856: HTAssocList_delete(req->scheme_specifics[cnt]);
857: }
858: FREE(req->scheme_specifics);
859: }
2.12 frystyk 860: #endif /* OLD_CODE */
2.11 frystyk 861: }
862: return;
2.1 luotonen 863: }
2.7 luotonen 864:
865:
2.1 luotonen 866:
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