]>
Commit | Line | Data |
---|---|---|
ef416fc2 | 1 | /* |
7e86f2f6 | 2 | * Authentication functions for CUPS. |
ef416fc2 | 3 | * |
16f67389 | 4 | * Copyright 2007-2018 by Apple Inc. |
7e86f2f6 | 5 | * Copyright 1997-2007 by Easy Software Products. |
ef416fc2 | 6 | * |
7e86f2f6 MS |
7 | * This file contains Kerberos support code, copyright 2006 by |
8 | * Jelmer Vernooij. | |
f7deaa1a | 9 | * |
e3101897 | 10 | * Licensed under Apache License v2.0. See the file "LICENSE" for more information. |
ef416fc2 | 11 | */ |
12 | ||
13 | /* | |
14 | * Include necessary headers... | |
15 | */ | |
16 | ||
71e16022 | 17 | #include "cups-private.h" |
ef416fc2 | 18 | #include <fcntl.h> |
19 | #include <sys/stat.h> | |
20 | #if defined(WIN32) || defined(__EMX__) | |
21 | # include <io.h> | |
22 | #else | |
23 | # include <unistd.h> | |
24 | #endif /* WIN32 || __EMX__ */ | |
25 | ||
f7deaa1a | 26 | #if HAVE_AUTHORIZATION_H |
27 | # include <Security/Authorization.h> | |
28 | # ifdef HAVE_SECBASEPRIV_H | |
29 | # include <Security/SecBasePriv.h> | |
30 | # else | |
31 | extern const char *cssmErrorString(int error); | |
32 | # endif /* HAVE_SECBASEPRIV_H */ | |
33 | #endif /* HAVE_AUTHORIZATION_H */ | |
34 | ||
bc44d920 | 35 | #if defined(SO_PEERCRED) && defined(AF_LOCAL) |
36 | # include <pwd.h> | |
37 | #endif /* SO_PEERCRED && AF_LOCAL */ | |
38 | ||
ef416fc2 | 39 | |
40 | /* | |
41 | * Local functions... | |
42 | */ | |
43 | ||
7ec11630 MS |
44 | static const char *cups_auth_find(const char *www_authenticate, const char *scheme); |
45 | static const char *cups_auth_param(const char *scheme, const char *name, char *value, size_t valsize); | |
46 | static const char *cups_auth_scheme(const char *www_authenticate, char *scheme, size_t schemesize); | |
47 | ||
f7deaa1a | 48 | #ifdef HAVE_GSSAPI |
eac3a0a0 MS |
49 | # ifdef HAVE_GSS_ACQUIRE_CRED_EX_F |
50 | # ifdef HAVE_GSS_GSSAPI_SPI_H | |
51 | # include <GSS/gssapi_spi.h> | |
52 | # else | |
a2326b5b MS |
53 | # define GSS_AUTH_IDENTITY_TYPE_1 1 |
54 | # define gss_acquire_cred_ex_f __ApplePrivate_gss_acquire_cred_ex_f | |
53af7f21 | 55 | typedef struct gss_auth_identity /* @private@ */ |
eac3a0a0 MS |
56 | { |
57 | uint32_t type; | |
58 | uint32_t flags; | |
59 | char *username; | |
60 | char *realm; | |
61 | char *password; | |
62 | gss_buffer_t *credentialsRef; | |
49c59293 | 63 | } gss_auth_identity_desc; |
eac3a0a0 MS |
64 | extern OM_uint32 gss_acquire_cred_ex_f(gss_status_id_t, const gss_name_t, |
65 | OM_uint32, OM_uint32, const gss_OID, | |
66 | gss_cred_usage_t, gss_auth_identity_t, | |
67 | void *, void (*)(void *, OM_uint32, | |
68 | gss_status_id_t, | |
69 | gss_cred_id_t, | |
70 | gss_OID_set, | |
71 | OM_uint32)); | |
72 | # endif /* HAVE_GSS_GSSAPI_SPI_H */ | |
73 | # include <dispatch/dispatch.h> | |
74 | typedef struct _cups_gss_acquire_s /* Acquire callback data */ | |
75 | { | |
76 | dispatch_semaphore_t sem; /* Synchronization semaphore */ | |
77 | OM_uint32 major; /* Returned status code */ | |
78 | gss_cred_id_t creds; /* Returned credentials */ | |
79 | } _cups_gss_acquire_t; | |
80 | ||
81 | static void cups_gss_acquire(void *ctx, OM_uint32 major, | |
82 | gss_status_id_t status, | |
83 | gss_cred_id_t creds, gss_OID_set oids, | |
84 | OM_uint32 time_rec); | |
85 | # endif /* HAVE_GSS_ACQUIRE_CRED_EX_F */ | |
86 | static gss_name_t cups_gss_getname(http_t *http, const char *service_name); | |
f7deaa1a | 87 | # ifdef DEBUG |
e07d4801 MS |
88 | static void cups_gss_printf(OM_uint32 major_status, OM_uint32 minor_status, |
89 | const char *message); | |
355e94dc | 90 | # else |
e07d4801 MS |
91 | # define cups_gss_printf(major, minor, message) |
92 | # endif /* DEBUG */ | |
f7deaa1a | 93 | #endif /* HAVE_GSSAPI */ |
ef416fc2 | 94 | static int cups_local_auth(http_t *http); |
95 | ||
96 | ||
97 | /* | |
98 | * 'cupsDoAuthentication()' - Authenticate a request. | |
99 | * | |
cb7f98ee | 100 | * This function should be called in response to a @code HTTP_STATUS_UNAUTHORIZED@ |
ef416fc2 | 101 | * status, prior to resubmitting your request. |
102 | * | |
8072030b | 103 | * @since CUPS 1.1.20/macOS 10.4@ |
ef416fc2 | 104 | */ |
105 | ||
106 | int /* O - 0 on success, -1 on error */ | |
f11a948a MS |
107 | cupsDoAuthentication( |
108 | http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */ | |
109 | const char *method, /* I - Request method ("GET", "POST", "PUT") */ | |
110 | const char *resource) /* I - Resource path */ | |
ef416fc2 | 111 | { |
3e7fe0ca | 112 | const char *password, /* Password string */ |
7ec11630 MS |
113 | *www_auth, /* WWW-Authenticate header */ |
114 | *schemedata; /* Scheme-specific data */ | |
115 | char scheme[256], /* Scheme name */ | |
16f67389 | 116 | prompt[1024]; /* Prompt for user */ |
f7deaa1a | 117 | int localauth; /* Local authentication result */ |
b86bc4cf | 118 | _cups_globals_t *cg; /* Global data */ |
ef416fc2 | 119 | |
120 | ||
807315e6 | 121 | DEBUG_printf(("cupsDoAuthentication(http=%p, method=\"%s\", resource=\"%s\")", (void *)http, method, resource)); |
ef416fc2 | 122 | |
f11a948a MS |
123 | if (!http) |
124 | http = _cupsConnect(); | |
125 | ||
126 | if (!http || !method || !resource) | |
127 | return (-1); | |
128 | ||
5a6b583a MS |
129 | DEBUG_printf(("2cupsDoAuthentication: digest_tries=%d, userpass=\"%s\"", |
130 | http->digest_tries, http->userpass)); | |
131 | DEBUG_printf(("2cupsDoAuthentication: WWW-Authenticate=\"%s\"", | |
132 | httpGetField(http, HTTP_FIELD_WWW_AUTHENTICATE))); | |
133 | ||
ef416fc2 | 134 | /* |
135 | * Clear the current authentication string... | |
136 | */ | |
137 | ||
355e94dc | 138 | httpSetAuthString(http, NULL, NULL); |
ef416fc2 | 139 | |
140 | /* | |
141 | * See if we can do local authentication... | |
142 | */ | |
143 | ||
f7deaa1a | 144 | if (http->digest_tries < 3) |
ef416fc2 | 145 | { |
f7deaa1a | 146 | if ((localauth = cups_local_auth(http)) == 0) |
147 | { | |
e07d4801 | 148 | DEBUG_printf(("2cupsDoAuthentication: authstring=\"%s\"", |
f7deaa1a | 149 | http->authstring)); |
f14324a7 | 150 | |
cb7f98ee | 151 | if (http->status == HTTP_STATUS_UNAUTHORIZED) |
f7deaa1a | 152 | http->digest_tries ++; |
f14324a7 | 153 | |
f7deaa1a | 154 | return (0); |
155 | } | |
156 | else if (localauth == -1) | |
f11a948a | 157 | { |
cb7f98ee | 158 | http->status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED; |
f7deaa1a | 159 | return (-1); /* Error or canceled */ |
f11a948a | 160 | } |
ef416fc2 | 161 | } |
162 | ||
163 | /* | |
7ec11630 | 164 | * Nope, loop through the authentication schemes to find the first we support. |
ef416fc2 | 165 | */ |
166 | ||
7ec11630 | 167 | www_auth = httpGetField(http, HTTP_FIELD_WWW_AUTHENTICATE); |
3e7fe0ca | 168 | |
7ec11630 | 169 | for (schemedata = cups_auth_scheme(www_auth, scheme, sizeof(scheme)); schemedata; schemedata = cups_auth_scheme(schemedata + strlen(scheme), scheme, sizeof(scheme))) |
ef416fc2 | 170 | { |
171 | /* | |
7ec11630 | 172 | * Check the scheme name... |
ef416fc2 | 173 | */ |
174 | ||
7ec11630 MS |
175 | #ifdef HAVE_GSSAPI |
176 | if (!_cups_strcasecmp(scheme, "Negotiate")) | |
177 | { | |
178 | /* | |
179 | * Kerberos authentication... | |
180 | */ | |
5a9febac | 181 | |
7ec11630 MS |
182 | if (_cupsSetNegotiateAuthString(http, method, resource)) |
183 | { | |
184 | http->status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED; | |
185 | return (-1); | |
186 | } | |
b86bc4cf | 187 | |
7ec11630 MS |
188 | break; |
189 | } | |
190 | else | |
191 | #endif /* HAVE_GSSAPI */ | |
192 | if (_cups_strcasecmp(scheme, "Basic") && _cups_strcasecmp(scheme, "Digest")) | |
193 | continue; /* Not supported (yet) */ | |
b86bc4cf | 194 | |
7ec11630 MS |
195 | /* |
196 | * See if we should retry the current username:password... | |
197 | */ | |
5a9febac | 198 | |
7ec11630 MS |
199 | if ((http->digest_tries > 1 || !http->userpass[0]) && (!_cups_strcasecmp(scheme, "Basic") || (!_cups_strcasecmp(scheme, "Digest")))) |
200 | { | |
201 | /* | |
202 | * Nope - get a new password from the user... | |
203 | */ | |
ef416fc2 | 204 | |
7ec11630 MS |
205 | char default_username[HTTP_MAX_VALUE]; |
206 | /* Default username */ | |
ef416fc2 | 207 | |
7ec11630 | 208 | cg = _cupsGlobals(); |
ef416fc2 | 209 | |
7ec11630 MS |
210 | if (!cg->lang_default) |
211 | cg->lang_default = cupsLangDefault(); | |
ef416fc2 | 212 | |
44cb0dd2 | 213 | if (cups_auth_param(schemedata, "username", default_username, sizeof(default_username))) |
7ec11630 | 214 | cupsSetUser(default_username); |
5a6b583a | 215 | |
7ec11630 | 216 | snprintf(prompt, sizeof(prompt), _cupsLangString(cg->lang_default, _("Password for %s on %s? ")), cupsUser(), http->hostname[0] == '/' ? "localhost" : http->hostname); |
5a6b583a | 217 | |
7ec11630 MS |
218 | http->digest_tries = _cups_strncasecmp(scheme, "Digest", 6) != 0; |
219 | http->userpass[0] = '\0'; | |
ef416fc2 | 220 | |
7ec11630 MS |
221 | if ((password = cupsGetPassword2(prompt, http, method, resource)) == NULL) |
222 | { | |
223 | http->status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED; | |
224 | return (-1); | |
225 | } | |
f7deaa1a | 226 | |
7ec11630 MS |
227 | snprintf(http->userpass, sizeof(http->userpass), "%s:%s", cupsUser(), password); |
228 | } | |
229 | else if (http->status == HTTP_STATUS_UNAUTHORIZED) | |
230 | http->digest_tries ++; | |
231 | ||
232 | if (http->status == HTTP_STATUS_UNAUTHORIZED && http->digest_tries >= 3) | |
f7deaa1a | 233 | { |
7ec11630 MS |
234 | DEBUG_printf(("1cupsDoAuthentication: Too many authentication tries (%d)", http->digest_tries)); |
235 | ||
cb7f98ee | 236 | http->status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED; |
f7deaa1a | 237 | return (-1); |
238 | } | |
7ec11630 | 239 | |
ef416fc2 | 240 | /* |
7ec11630 | 241 | * Got a password; encode it for the server... |
ef416fc2 | 242 | */ |
243 | ||
7ec11630 MS |
244 | if (!_cups_strcasecmp(scheme, "Basic")) |
245 | { | |
246 | /* | |
247 | * Basic authentication... | |
248 | */ | |
5a738aea | 249 | |
7ec11630 | 250 | char encode[256]; /* Base64 buffer */ |
5a738aea | 251 | |
7ec11630 MS |
252 | httpEncode64_2(encode, sizeof(encode), http->userpass, (int)strlen(http->userpass)); |
253 | httpSetAuthString(http, "Basic", encode); | |
16f67389 | 254 | break; |
7ec11630 MS |
255 | } |
256 | else if (!_cups_strcasecmp(scheme, "Digest")) | |
257 | { | |
258 | /* | |
259 | * Digest authentication... | |
260 | */ | |
261 | ||
16f67389 MS |
262 | char nonce[HTTP_MAX_VALUE]; /* nonce="xyz" string */ |
263 | ||
264 | cups_auth_param(schemedata, "algorithm", http->algorithm, sizeof(http->algorithm)); | |
265 | cups_auth_param(schemedata, "opaque", http->opaque, sizeof(http->opaque)); | |
266 | cups_auth_param(schemedata, "nonce", nonce, sizeof(nonce)); | |
267 | cups_auth_param(schemedata, "realm", http->realm, sizeof(http->realm)); | |
7ec11630 MS |
268 | |
269 | if (strcmp(nonce, http->nonce)) | |
270 | { | |
271 | strlcpy(http->nonce, nonce, sizeof(http->nonce)); | |
272 | http->nonce_count = 1; | |
273 | } | |
274 | else | |
275 | http->nonce_count ++; | |
ef416fc2 | 276 | |
16f67389 MS |
277 | if (_httpSetDigestAuthString(http, method, resource)) |
278 | break; | |
7ec11630 MS |
279 | } |
280 | } | |
281 | ||
282 | if (http->authstring) | |
283 | { | |
284 | DEBUG_printf(("1cupsDoAuthentication: authstring=\"%s\"", http->authstring)); | |
285 | ||
286 | return (0); | |
ef416fc2 | 287 | } |
f14324a7 MS |
288 | else |
289 | { | |
7ec11630 | 290 | DEBUG_printf(("1cupsDoAuthentication: Unknown auth type: \"%s\"", www_auth)); |
cb7f98ee | 291 | http->status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED; |
7ec11630 | 292 | |
f14324a7 MS |
293 | return (-1); |
294 | } | |
ef416fc2 | 295 | } |
296 | ||
297 | ||
f7deaa1a | 298 | #ifdef HAVE_GSSAPI |
f14324a7 MS |
299 | /* |
300 | * '_cupsSetNegotiateAuthString()' - Set the Kerberos authentication string. | |
301 | */ | |
302 | ||
303 | int /* O - 0 on success, -1 on error */ | |
304 | _cupsSetNegotiateAuthString( | |
eac3a0a0 MS |
305 | http_t *http, /* I - Connection to server */ |
306 | const char *method, /* I - Request method ("GET", "POST", "PUT") */ | |
307 | const char *resource) /* I - Resource path */ | |
f14324a7 MS |
308 | { |
309 | OM_uint32 minor_status, /* Minor status code */ | |
310 | major_status; /* Major status code */ | |
311 | gss_buffer_desc output_token = GSS_C_EMPTY_BUFFER; | |
07ed0e9a | 312 | /* Output token */ |
f14324a7 MS |
313 | |
314 | ||
321d8d57 MS |
315 | (void)method; |
316 | (void)resource; | |
317 | ||
f14324a7 MS |
318 | # ifdef __APPLE__ |
319 | /* | |
320 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
321 | * to use it... | |
322 | */ | |
323 | ||
6d8021f4 | 324 | if (&gss_init_sec_context == NULL) |
f14324a7 MS |
325 | { |
326 | DEBUG_puts("1_cupsSetNegotiateAuthString: Weak-linked GSSAPI/Kerberos " | |
327 | "framework is not present"); | |
328 | return (-1); | |
329 | } | |
330 | # endif /* __APPLE__ */ | |
331 | ||
332 | if (http->gssname == GSS_C_NO_NAME) | |
333 | { | |
eac3a0a0 | 334 | http->gssname = cups_gss_getname(http, _cupsGSSServiceName()); |
f14324a7 MS |
335 | } |
336 | ||
337 | if (http->gssctx != GSS_C_NO_CONTEXT) | |
338 | { | |
339 | gss_delete_sec_context(&minor_status, &http->gssctx, GSS_C_NO_BUFFER); | |
340 | http->gssctx = GSS_C_NO_CONTEXT; | |
341 | } | |
342 | ||
eac3a0a0 MS |
343 | major_status = gss_init_sec_context(&minor_status, GSS_C_NO_CREDENTIAL, |
344 | &http->gssctx, | |
345 | http->gssname, http->gssmech, | |
346 | GSS_C_MUTUAL_FLAG | GSS_C_INTEG_FLAG, | |
347 | GSS_C_INDEFINITE, | |
348 | GSS_C_NO_CHANNEL_BINDINGS, | |
349 | GSS_C_NO_BUFFER, &http->gssmech, | |
350 | &output_token, NULL, NULL); | |
351 | ||
accedcf8 | 352 | # ifdef HAVE_GSS_ACQUIRE_CRED_EX_F |
eac3a0a0 MS |
353 | if (major_status == GSS_S_NO_CRED) |
354 | { | |
355 | /* | |
356 | * Ask the user for credentials... | |
357 | */ | |
358 | ||
359 | char prompt[1024], /* Prompt for user */ | |
360 | userbuf[256]; /* Kerberos username */ | |
361 | const char *username, /* Username string */ | |
362 | *password; /* Password string */ | |
363 | _cups_gss_acquire_t data; /* Callback data */ | |
49c59293 | 364 | gss_auth_identity_desc identity; /* Kerberos user identity */ |
eac3a0a0 MS |
365 | _cups_globals_t *cg = _cupsGlobals(); |
366 | /* Per-thread global data */ | |
367 | ||
368 | if (!cg->lang_default) | |
369 | cg->lang_default = cupsLangDefault(); | |
370 | ||
371 | snprintf(prompt, sizeof(prompt), | |
372 | _cupsLangString(cg->lang_default, _("Password for %s on %s? ")), | |
f228370c | 373 | cupsUser(), http->gsshost); |
eac3a0a0 MS |
374 | |
375 | if ((password = cupsGetPassword2(prompt, http, method, resource)) == NULL) | |
376 | return (-1); | |
377 | ||
378 | /* | |
379 | * Try to acquire credentials... | |
380 | */ | |
381 | ||
382 | username = cupsUser(); | |
383 | if (!strchr(username, '@')) | |
384 | { | |
f228370c | 385 | snprintf(userbuf, sizeof(userbuf), "%s@%s", username, http->gsshost); |
eac3a0a0 MS |
386 | username = userbuf; |
387 | } | |
388 | ||
389 | identity.type = GSS_AUTH_IDENTITY_TYPE_1; | |
390 | identity.flags = 0; | |
391 | identity.username = (char *)username; | |
392 | identity.realm = (char *)""; | |
393 | identity.password = (char *)password; | |
394 | identity.credentialsRef = NULL; | |
395 | ||
396 | data.sem = dispatch_semaphore_create(0); | |
397 | data.major = 0; | |
398 | data.creds = NULL; | |
399 | ||
400 | if (data.sem) | |
401 | { | |
5dcbe84d | 402 | major_status = gss_acquire_cred_ex_f(NULL, GSS_C_NO_NAME, 0, GSS_C_INDEFINITE, GSS_KRB5_MECHANISM, GSS_C_INITIATE, (gss_auth_identity_t)&identity, &data, cups_gss_acquire); |
eac3a0a0 MS |
403 | |
404 | if (major_status == GSS_S_COMPLETE) | |
405 | { | |
406 | dispatch_semaphore_wait(data.sem, DISPATCH_TIME_FOREVER); | |
407 | major_status = data.major; | |
408 | } | |
409 | ||
410 | dispatch_release(data.sem); | |
411 | ||
412 | if (major_status == GSS_S_COMPLETE) | |
413 | { | |
414 | OM_uint32 release_minor; /* Minor status from releasing creds */ | |
415 | ||
416 | major_status = gss_init_sec_context(&minor_status, data.creds, | |
417 | &http->gssctx, | |
418 | http->gssname, http->gssmech, | |
419 | GSS_C_MUTUAL_FLAG | GSS_C_INTEG_FLAG, | |
420 | GSS_C_INDEFINITE, | |
421 | GSS_C_NO_CHANNEL_BINDINGS, | |
422 | GSS_C_NO_BUFFER, &http->gssmech, | |
423 | &output_token, NULL, NULL); | |
424 | gss_release_cred(&release_minor, &data.creds); | |
425 | } | |
426 | } | |
427 | } | |
accedcf8 | 428 | # endif /* HAVE_GSS_ACQUIRED_CRED_EX_F */ |
f14324a7 MS |
429 | |
430 | if (GSS_ERROR(major_status)) | |
431 | { | |
432 | cups_gss_printf(major_status, minor_status, | |
433 | "_cupsSetNegotiateAuthString: Unable to initialize " | |
434 | "security context"); | |
435 | return (-1); | |
436 | } | |
437 | ||
accedcf8 | 438 | # ifdef DEBUG |
eac3a0a0 | 439 | else if (major_status == GSS_S_CONTINUE_NEEDED) |
f14324a7 MS |
440 | cups_gss_printf(major_status, minor_status, |
441 | "_cupsSetNegotiateAuthString: Continuation needed!"); | |
accedcf8 | 442 | # endif /* DEBUG */ |
f14324a7 MS |
443 | |
444 | if (output_token.length > 0 && output_token.length <= 65536) | |
445 | { | |
446 | /* | |
447 | * Allocate the authorization string since Windows KDCs can have | |
448 | * arbitrarily large credentials... | |
449 | */ | |
450 | ||
7e86f2f6 MS |
451 | int authsize = 10 + /* "Negotiate " */ |
452 | (int)output_token.length * 4 / 3 + 1 + 1; | |
453 | /* Base64 + nul */ | |
f14324a7 MS |
454 | |
455 | httpSetAuthString(http, NULL, NULL); | |
456 | ||
7e86f2f6 | 457 | if ((http->authstring = malloc((size_t)authsize)) == NULL) |
f14324a7 MS |
458 | { |
459 | http->authstring = http->_authstring; | |
460 | authsize = sizeof(http->_authstring); | |
461 | } | |
462 | ||
07623986 | 463 | strlcpy(http->authstring, "Negotiate ", (size_t)authsize); |
f14324a7 | 464 | httpEncode64_2(http->authstring + 10, authsize - 10, output_token.value, |
7e86f2f6 | 465 | (int)output_token.length); |
f14324a7 MS |
466 | |
467 | gss_release_buffer(&minor_status, &output_token); | |
468 | } | |
469 | else | |
470 | { | |
471 | DEBUG_printf(("1_cupsSetNegotiateAuthString: Kerberos credentials too " | |
472 | "large - %d bytes!", (int)output_token.length)); | |
473 | gss_release_buffer(&minor_status, &output_token); | |
474 | ||
475 | return (-1); | |
476 | } | |
477 | ||
478 | return (0); | |
479 | } | |
accedcf8 | 480 | #endif /* HAVE_GSSAPI */ |
f14324a7 MS |
481 | |
482 | ||
7ec11630 MS |
483 | /* |
484 | * 'cups_auth_find()' - Find the named WWW-Authenticate scheme. | |
485 | * | |
486 | * The "www_authenticate" parameter points to the current position in the header. | |
487 | * | |
488 | * Returns @code NULL@ if the auth scheme is not present. | |
489 | */ | |
490 | ||
491 | static const char * /* O - Start of matching scheme or @code NULL@ if not found */ | |
492 | cups_auth_find(const char *www_authenticate, /* I - Pointer into WWW-Authenticate header */ | |
493 | const char *scheme) /* I - Authentication scheme */ | |
494 | { | |
495 | size_t schemelen = strlen(scheme); /* Length of scheme */ | |
496 | ||
497 | ||
91bc88eb MS |
498 | DEBUG_printf(("8cups_auth_find(www_authenticate=\"%s\", scheme=\"%s\"(%d))", www_authenticate, scheme, (int)schemelen)); |
499 | ||
7ec11630 MS |
500 | while (*www_authenticate) |
501 | { | |
502 | /* | |
503 | * Skip leading whitespace and commas... | |
504 | */ | |
505 | ||
91bc88eb | 506 | DEBUG_printf(("9cups_auth_find: Before whitespace: \"%s\"", www_authenticate)); |
7ec11630 MS |
507 | while (isspace(*www_authenticate & 255) || *www_authenticate == ',') |
508 | www_authenticate ++; | |
91bc88eb | 509 | DEBUG_printf(("9cups_auth_find: After whitespace: \"%s\"", www_authenticate)); |
7ec11630 MS |
510 | |
511 | /* | |
512 | * See if this is "Scheme" followed by whitespace or the end of the string. | |
513 | */ | |
514 | ||
c944b62b | 515 | if (!strncmp(www_authenticate, scheme, schemelen) && (isspace(www_authenticate[schemelen] & 255) || www_authenticate[schemelen] == ',' || !www_authenticate[schemelen])) |
7ec11630 MS |
516 | { |
517 | /* | |
518 | * Yes, this is the start of the scheme-specific information... | |
519 | */ | |
520 | ||
91bc88eb MS |
521 | DEBUG_printf(("9cups_auth_find: Returning \"%s\".", www_authenticate)); |
522 | ||
7ec11630 MS |
523 | return (www_authenticate); |
524 | } | |
525 | ||
526 | /* | |
527 | * Skip the scheme name or param="value" string... | |
528 | */ | |
529 | ||
530 | while (!isspace(*www_authenticate & 255) && *www_authenticate) | |
531 | { | |
532 | if (*www_authenticate == '\"') | |
533 | { | |
534 | /* | |
535 | * Skip quoted value... | |
536 | */ | |
537 | ||
91bc88eb MS |
538 | www_authenticate ++; |
539 | while (*www_authenticate && *www_authenticate != '\"') | |
7ec11630 | 540 | www_authenticate ++; |
91bc88eb MS |
541 | |
542 | DEBUG_printf(("9cups_auth_find: After quoted: \"%s\"", www_authenticate)); | |
7ec11630 MS |
543 | } |
544 | ||
545 | www_authenticate ++; | |
546 | } | |
91bc88eb MS |
547 | |
548 | DEBUG_printf(("9cups_auth_find: After skip: \"%s\"", www_authenticate)); | |
7ec11630 MS |
549 | } |
550 | ||
91bc88eb MS |
551 | DEBUG_puts("9cups_auth_find: Returning NULL."); |
552 | ||
7ec11630 MS |
553 | return (NULL); |
554 | } | |
555 | ||
556 | ||
557 | /* | |
558 | * 'cups_auth_param()' - Copy the value for the named authentication parameter, | |
559 | * if present. | |
560 | */ | |
561 | ||
562 | static const char * /* O - Parameter value or @code NULL@ if not present */ | |
563 | cups_auth_param(const char *scheme, /* I - Pointer to auth data */ | |
564 | const char *name, /* I - Name of parameter */ | |
565 | char *value, /* I - Value buffer */ | |
566 | size_t valsize) /* I - Size of value buffer */ | |
567 | { | |
568 | char *valptr = value, /* Pointer into value buffer */ | |
569 | *valend = value + valsize - 1; /* Pointer to end of buffer */ | |
570 | size_t namelen = strlen(name); /* Name length */ | |
571 | int param; /* Is this a parameter? */ | |
572 | ||
573 | ||
91bc88eb MS |
574 | DEBUG_printf(("8cups_auth_param(scheme=\"%s\", name=\"%s\", value=%p, valsize=%d)", scheme, name, (void *)value, (int)valsize)); |
575 | ||
7ec11630 MS |
576 | while (!isspace(*scheme & 255) && *scheme) |
577 | scheme ++; | |
578 | ||
579 | while (*scheme) | |
580 | { | |
581 | while (isspace(*scheme & 255) || *scheme == ',') | |
582 | scheme ++; | |
583 | ||
584 | if (!strncmp(scheme, name, namelen) && scheme[namelen] == '=') | |
585 | { | |
586 | /* | |
587 | * Found the parameter, copy the value... | |
588 | */ | |
589 | ||
590 | scheme += namelen + 1; | |
591 | if (*scheme == '\"') | |
592 | { | |
593 | scheme ++; | |
594 | ||
595 | while (*scheme && *scheme != '\"') | |
596 | { | |
597 | if (valptr < valend) | |
598 | *valptr++ = *scheme; | |
599 | ||
600 | scheme ++; | |
601 | } | |
602 | } | |
603 | else | |
604 | { | |
605 | while (*scheme && strchr("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~+/=", *scheme)) | |
606 | { | |
607 | if (valptr < valend) | |
608 | *valptr++ = *scheme; | |
609 | ||
610 | scheme ++; | |
611 | } | |
612 | } | |
613 | ||
614 | *valptr = '\0'; | |
615 | ||
91bc88eb MS |
616 | DEBUG_printf(("9cups_auth_param: Returning \"%s\".", value)); |
617 | ||
7ec11630 MS |
618 | return (value); |
619 | } | |
620 | ||
621 | /* | |
622 | * Skip the param=value string... | |
623 | */ | |
624 | ||
625 | param = 0; | |
626 | ||
627 | while (!isspace(*scheme & 255) && *scheme) | |
628 | { | |
629 | if (*scheme == '=') | |
630 | param = 1; | |
631 | else if (*scheme == '\"') | |
632 | { | |
633 | /* | |
634 | * Skip quoted value... | |
635 | */ | |
636 | ||
91bc88eb MS |
637 | scheme ++; |
638 | while (*scheme && *scheme != '\"') | |
7ec11630 MS |
639 | scheme ++; |
640 | } | |
641 | ||
642 | scheme ++; | |
643 | } | |
644 | ||
645 | /* | |
646 | * If this wasn't a parameter, we are at the end of this scheme's | |
647 | * parameters... | |
648 | */ | |
649 | ||
650 | if (!param) | |
651 | break; | |
652 | } | |
653 | ||
654 | *value = '\0'; | |
655 | ||
91bc88eb MS |
656 | DEBUG_puts("9cups_auth_param: Returning NULL."); |
657 | ||
7ec11630 MS |
658 | return (NULL); |
659 | } | |
660 | ||
661 | ||
662 | /* | |
663 | * 'cups_auth_scheme()' - Get the (next) WWW-Authenticate scheme. | |
664 | * | |
665 | * The "www_authenticate" parameter points to the current position in the header. | |
666 | * | |
667 | * Returns @code NULL@ if there are no (more) auth schemes present. | |
668 | */ | |
669 | ||
670 | static const char * /* O - Start of scheme or @code NULL@ if not found */ | |
671 | cups_auth_scheme(const char *www_authenticate, /* I - Pointer into WWW-Authenticate header */ | |
672 | char *scheme, /* I - Scheme name buffer */ | |
673 | size_t schemesize) /* I - Size of buffer */ | |
674 | { | |
675 | const char *start; /* Start of scheme data */ | |
676 | char *sptr = scheme, /* Pointer into scheme buffer */ | |
677 | *send = scheme + schemesize - 1;/* End of scheme buffer */ | |
678 | int param; /* Is this a parameter? */ | |
679 | ||
680 | ||
91bc88eb MS |
681 | DEBUG_printf(("8cups_auth_scheme(www_authenticate=\"%s\", scheme=%p, schemesize=%d)", www_authenticate, (void *)scheme, (int)schemesize)); |
682 | ||
7ec11630 MS |
683 | while (*www_authenticate) |
684 | { | |
685 | /* | |
686 | * Skip leading whitespace and commas... | |
687 | */ | |
688 | ||
689 | while (isspace(*www_authenticate & 255) || *www_authenticate == ',') | |
690 | www_authenticate ++; | |
691 | ||
692 | /* | |
693 | * Parse the scheme name or param="value" string... | |
694 | */ | |
695 | ||
44cb0dd2 | 696 | for (sptr = scheme, start = www_authenticate, param = 0; *www_authenticate && *www_authenticate != ',' && !isspace(*www_authenticate & 255); www_authenticate ++) |
7ec11630 MS |
697 | { |
698 | if (*www_authenticate == '=') | |
699 | param = 1; | |
700 | else if (!param && sptr < send) | |
701 | *sptr++ = *www_authenticate; | |
702 | else if (*www_authenticate == '\"') | |
703 | { | |
704 | /* | |
705 | * Skip quoted value... | |
706 | */ | |
707 | ||
91bc88eb MS |
708 | www_authenticate ++; |
709 | while (*www_authenticate && *www_authenticate != '\"') | |
7ec11630 MS |
710 | www_authenticate ++; |
711 | } | |
712 | } | |
713 | ||
714 | if (sptr > scheme && !param) | |
715 | { | |
716 | *sptr = '\0'; | |
91bc88eb MS |
717 | |
718 | DEBUG_printf(("9cups_auth_scheme: Returning \"%s\".", start)); | |
719 | ||
7ec11630 MS |
720 | return (start); |
721 | } | |
722 | } | |
723 | ||
724 | *scheme = '\0'; | |
725 | ||
91bc88eb MS |
726 | DEBUG_puts("9cups_auth_scheme: Returning NULL."); |
727 | ||
7ec11630 MS |
728 | return (NULL); |
729 | } | |
730 | ||
731 | ||
accedcf8 | 732 | #ifdef HAVE_GSSAPI |
eac3a0a0 | 733 | # ifdef HAVE_GSS_ACQUIRE_CRED_EX_F |
f7deaa1a | 734 | /* |
eac3a0a0 MS |
735 | * 'cups_gss_acquire()' - Kerberos credentials callback. |
736 | */ | |
737 | static void | |
738 | cups_gss_acquire( | |
739 | void *ctx, /* I - Caller context */ | |
740 | OM_uint32 major, /* I - Major error code */ | |
741 | gss_status_id_t status, /* I - Status (unused) */ | |
742 | gss_cred_id_t creds, /* I - Credentials (if any) */ | |
743 | gss_OID_set oids, /* I - Mechanism OIDs (unused) */ | |
744 | OM_uint32 time_rec) /* I - Timestamp (unused) */ | |
745 | { | |
746 | uint32_t min; /* Minor error code */ | |
747 | _cups_gss_acquire_t *data; /* Callback data */ | |
748 | ||
749 | ||
750 | (void)status; | |
751 | (void)time_rec; | |
752 | ||
753 | data = (_cups_gss_acquire_t *)ctx; | |
754 | data->major = major; | |
755 | data->creds = creds; | |
756 | ||
757 | gss_release_oid_set(&min, &oids); | |
758 | dispatch_semaphore_signal(data->sem); | |
759 | } | |
760 | # endif /* HAVE_GSS_ACQUIRE_CRED_EX_F */ | |
761 | ||
762 | ||
763 | /* | |
764 | * 'cups_gss_getname()' - Get CUPS service credentials for authentication. | |
f7deaa1a | 765 | */ |
766 | ||
767 | static gss_name_t /* O - Server name */ | |
eac3a0a0 | 768 | cups_gss_getname( |
f7deaa1a | 769 | http_t *http, /* I - Connection to server */ |
770 | const char *service_name) /* I - Service name */ | |
771 | { | |
772 | gss_buffer_desc token = GSS_C_EMPTY_BUFFER; | |
773 | /* Service token */ | |
bc44d920 | 774 | OM_uint32 major_status, /* Major status code */ |
775 | minor_status; /* Minor status code */ | |
776 | gss_name_t server_name; /* Server name */ | |
eac3a0a0 | 777 | char buf[1024]; /* Name buffer */ |
bc44d920 | 778 | |
779 | ||
eac3a0a0 | 780 | DEBUG_printf(("7cups_gss_getname(http=%p, service_name=\"%s\")", http, |
e07d4801 MS |
781 | service_name)); |
782 | ||
783 | ||
bc44d920 | 784 | /* |
785 | * Get the hostname... | |
786 | */ | |
f7deaa1a | 787 | |
eac3a0a0 MS |
788 | if (!http->gsshost[0]) |
789 | { | |
790 | httpGetHostname(http, http->gsshost, sizeof(http->gsshost)); | |
bc44d920 | 791 | |
eac3a0a0 MS |
792 | if (!strcmp(http->gsshost, "localhost")) |
793 | { | |
794 | if (gethostname(http->gsshost, sizeof(http->gsshost)) < 0) | |
795 | { | |
796 | DEBUG_printf(("1cups_gss_getname: gethostname() failed: %s", | |
797 | strerror(errno))); | |
798 | http->gsshost[0] = '\0'; | |
799 | return (NULL); | |
800 | } | |
801 | ||
802 | if (!strchr(http->gsshost, '.')) | |
803 | { | |
804 | /* | |
805 | * The hostname is not a FQDN, so look it up... | |
806 | */ | |
807 | ||
808 | struct hostent *host; /* Host entry to get FQDN */ | |
809 | ||
810 | if ((host = gethostbyname(http->gsshost)) != NULL && host->h_name) | |
811 | { | |
812 | /* | |
813 | * Use the resolved hostname... | |
814 | */ | |
815 | ||
816 | strlcpy(http->gsshost, host->h_name, sizeof(http->gsshost)); | |
817 | } | |
818 | else | |
819 | { | |
820 | DEBUG_printf(("1cups_gss_getname: gethostbyname(\"%s\") failed.", | |
821 | http->gsshost)); | |
822 | http->gsshost[0] = '\0'; | |
823 | return (NULL); | |
824 | } | |
825 | } | |
826 | } | |
827 | } | |
f7deaa1a | 828 | |
829 | /* | |
eac3a0a0 | 830 | * Get a service name we can use for authentication purposes... |
f7deaa1a | 831 | */ |
832 | ||
eac3a0a0 | 833 | snprintf(buf, sizeof(buf), "%s@%s", service_name, http->gsshost); |
f7deaa1a | 834 | |
eac3a0a0 | 835 | DEBUG_printf(("8cups_gss_getname: Looking up \"%s\".", buf)); |
7ff4fea9 | 836 | |
f7deaa1a | 837 | token.value = buf; |
838 | token.length = strlen(buf); | |
839 | server_name = GSS_C_NO_NAME; | |
840 | major_status = gss_import_name(&minor_status, &token, | |
841 | GSS_C_NT_HOSTBASED_SERVICE, | |
842 | &server_name); | |
843 | ||
844 | if (GSS_ERROR(major_status)) | |
845 | { | |
e07d4801 | 846 | cups_gss_printf(major_status, minor_status, |
eac3a0a0 | 847 | "cups_gss_getname: gss_import_name() failed"); |
f7deaa1a | 848 | return (NULL); |
849 | } | |
850 | ||
851 | return (server_name); | |
852 | } | |
e07d4801 MS |
853 | |
854 | ||
855 | # ifdef DEBUG | |
856 | /* | |
eac3a0a0 | 857 | * 'cups_gss_printf()' - Show debug error messages from GSSAPI. |
e07d4801 MS |
858 | */ |
859 | ||
860 | static void | |
861 | cups_gss_printf(OM_uint32 major_status,/* I - Major status code */ | |
862 | OM_uint32 minor_status,/* I - Minor status code */ | |
863 | const char *message) /* I - Prefix for error message */ | |
864 | { | |
865 | OM_uint32 err_major_status, /* Major status code for display */ | |
866 | err_minor_status; /* Minor status code for display */ | |
867 | OM_uint32 msg_ctx; /* Message context */ | |
868 | gss_buffer_desc major_status_string = GSS_C_EMPTY_BUFFER, | |
869 | /* Major status message */ | |
870 | minor_status_string = GSS_C_EMPTY_BUFFER; | |
871 | /* Minor status message */ | |
872 | ||
873 | ||
874 | msg_ctx = 0; | |
875 | err_major_status = gss_display_status(&err_minor_status, | |
876 | major_status, | |
877 | GSS_C_GSS_CODE, | |
878 | GSS_C_NO_OID, | |
879 | &msg_ctx, | |
880 | &major_status_string); | |
881 | ||
882 | if (!GSS_ERROR(err_major_status)) | |
883 | gss_display_status(&err_minor_status, minor_status, GSS_C_MECH_CODE, | |
884 | GSS_C_NULL_OID, &msg_ctx, &minor_status_string); | |
885 | ||
68b10830 | 886 | DEBUG_printf(("1%s: %s, %s", message, (char *)major_status_string.value, |
e07d4801 MS |
887 | (char *)minor_status_string.value)); |
888 | ||
889 | gss_release_buffer(&err_minor_status, &major_status_string); | |
890 | gss_release_buffer(&err_minor_status, &minor_status_string); | |
891 | } | |
892 | # endif /* DEBUG */ | |
f7deaa1a | 893 | #endif /* HAVE_GSSAPI */ |
894 | ||
895 | ||
ef416fc2 | 896 | /* |
897 | * 'cups_local_auth()' - Get the local authorization certificate if | |
eac3a0a0 | 898 | * available/applicable. |
ef416fc2 | 899 | */ |
900 | ||
f7deaa1a | 901 | static int /* O - 0 if available */ |
bc44d920 | 902 | /* 1 if not available */ |
f7deaa1a | 903 | /* -1 error */ |
ef416fc2 | 904 | cups_local_auth(http_t *http) /* I - HTTP connection to server */ |
905 | { | |
906 | #if defined(WIN32) || defined(__EMX__) | |
907 | /* | |
908 | * Currently WIN32 and OS-2 do not support the CUPS server... | |
909 | */ | |
910 | ||
bc44d920 | 911 | return (1); |
ef416fc2 | 912 | #else |
f7deaa1a | 913 | int pid; /* Current process ID */ |
914 | FILE *fp; /* Certificate file */ | |
e07d4801 | 915 | char trc[16], /* Try Root Certificate parameter */ |
6961465f | 916 | filename[1024]; /* Certificate filename */ |
7ec11630 MS |
917 | const char *www_auth, /* WWW-Authenticate header */ |
918 | *schemedata; /* Data for the named auth scheme */ | |
ef416fc2 | 919 | _cups_globals_t *cg = _cupsGlobals(); /* Global data */ |
bc44d920 | 920 | # if defined(HAVE_AUTHORIZATION_H) |
f7deaa1a | 921 | OSStatus status; /* Status */ |
922 | AuthorizationItem auth_right; /* Authorization right */ | |
923 | AuthorizationRights auth_rights; /* Authorization rights */ | |
924 | AuthorizationFlags auth_flags; /* Authorization flags */ | |
925 | AuthorizationExternalForm auth_extrn; /* Authorization ref external */ | |
926 | char auth_key[1024]; /* Buffer */ | |
927 | char buffer[1024]; /* Buffer */ | |
bc44d920 | 928 | # endif /* HAVE_AUTHORIZATION_H */ |
ef416fc2 | 929 | |
930 | ||
807315e6 | 931 | DEBUG_printf(("7cups_local_auth(http=%p) hostaddr=%s, hostname=\"%s\"", (void *)http, httpAddrString(http->hostaddr, filename, sizeof(filename)), http->hostname)); |
ef416fc2 | 932 | |
933 | /* | |
934 | * See if we are accessing localhost... | |
935 | */ | |
936 | ||
7ec11630 | 937 | if (!httpAddrLocalhost(http->hostaddr) && _cups_strcasecmp(http->hostname, "localhost") != 0) |
ef416fc2 | 938 | { |
e07d4801 | 939 | DEBUG_puts("8cups_local_auth: Not a local connection!"); |
bc44d920 | 940 | return (1); |
ef416fc2 | 941 | } |
942 | ||
accedcf8 MS |
943 | www_auth = httpGetField(http, HTTP_FIELD_WWW_AUTHENTICATE); |
944 | ||
bc44d920 | 945 | # if defined(HAVE_AUTHORIZATION_H) |
f7deaa1a | 946 | /* |
947 | * Delete any previous authorization reference... | |
948 | */ | |
f14324a7 | 949 | |
b94498cf | 950 | if (http->auth_ref) |
f7deaa1a | 951 | { |
b94498cf | 952 | AuthorizationFree(http->auth_ref, kAuthorizationFlagDefaults); |
953 | http->auth_ref = NULL; | |
f7deaa1a | 954 | } |
955 | ||
91bc88eb | 956 | if (!getenv("GATEWAY_INTERFACE") && (schemedata = cups_auth_find(www_auth, "AuthRef")) != NULL && cups_auth_param(schemedata, "key", auth_key, sizeof(auth_key))) |
f7deaa1a | 957 | { |
7ec11630 | 958 | status = AuthorizationCreate(NULL, kAuthorizationEmptyEnvironment, kAuthorizationFlagDefaults, &http->auth_ref); |
f7deaa1a | 959 | if (status != errAuthorizationSuccess) |
960 | { | |
e07d4801 | 961 | DEBUG_printf(("8cups_local_auth: AuthorizationCreate() returned %d (%s)", |
f7deaa1a | 962 | (int)status, cssmErrorString(status))); |
963 | return (-1); | |
964 | } | |
965 | ||
966 | auth_right.name = auth_key; | |
967 | auth_right.valueLength = 0; | |
968 | auth_right.value = NULL; | |
969 | auth_right.flags = 0; | |
970 | ||
971 | auth_rights.count = 1; | |
972 | auth_rights.items = &auth_right; | |
973 | ||
f14324a7 | 974 | auth_flags = kAuthorizationFlagDefaults | |
f7deaa1a | 975 | kAuthorizationFlagPreAuthorize | |
f14324a7 | 976 | kAuthorizationFlagInteractionAllowed | |
f7deaa1a | 977 | kAuthorizationFlagExtendRights; |
978 | ||
f14324a7 MS |
979 | status = AuthorizationCopyRights(http->auth_ref, &auth_rights, |
980 | kAuthorizationEmptyEnvironment, | |
f7deaa1a | 981 | auth_flags, NULL); |
982 | if (status == errAuthorizationSuccess) | |
b94498cf | 983 | status = AuthorizationMakeExternalForm(http->auth_ref, &auth_extrn); |
f7deaa1a | 984 | |
985 | if (status == errAuthorizationSuccess) | |
986 | { | |
987 | /* | |
988 | * Set the authorization string and return... | |
989 | */ | |
990 | ||
f14324a7 | 991 | httpEncode64_2(buffer, sizeof(buffer), (void *)&auth_extrn, |
f7deaa1a | 992 | sizeof(auth_extrn)); |
993 | ||
355e94dc | 994 | httpSetAuthString(http, "AuthRef", buffer); |
f7deaa1a | 995 | |
e07d4801 | 996 | DEBUG_printf(("8cups_local_auth: Returning authstring=\"%s\"", |
f7deaa1a | 997 | http->authstring)); |
998 | return (0); | |
999 | } | |
1000 | else if (status == errAuthorizationCanceled) | |
1001 | return (-1); | |
1002 | ||
e07d4801 | 1003 | DEBUG_printf(("9cups_local_auth: AuthorizationCopyRights() returned %d (%s)", |
f7deaa1a | 1004 | (int)status, cssmErrorString(status))); |
1005 | ||
1006 | /* | |
1007 | * Fall through to try certificates... | |
1008 | */ | |
1009 | } | |
bc44d920 | 1010 | # endif /* HAVE_AUTHORIZATION_H */ |
f7deaa1a | 1011 | |
7ec11630 MS |
1012 | # ifdef HAVE_GSSAPI |
1013 | if (cups_auth_find(www_auth, "Negotiate")) | |
1014 | return (1); | |
1015 | # endif /* HAVE_GSSAPI */ | |
7ec11630 | 1016 | |
f11a948a MS |
1017 | # if defined(SO_PEERCRED) && defined(AF_LOCAL) |
1018 | /* | |
1019 | * See if we can authenticate using the peer credentials provided over a | |
1020 | * domain socket; if so, specify "PeerCred username" as the authentication | |
1021 | * information... | |
1022 | */ | |
1023 | ||
7ec11630 MS |
1024 | if (http->hostaddr->addr.sa_family == AF_LOCAL && |
1025 | !getenv("GATEWAY_INTERFACE") && /* Not via CGI programs... */ | |
1026 | cups_auth_find(www_auth, "PeerCred")) | |
f11a948a MS |
1027 | { |
1028 | /* | |
1029 | * Verify that the current cupsUser() matches the current UID... | |
1030 | */ | |
1031 | ||
1032 | struct passwd *pwd; /* Password information */ | |
1033 | const char *username; /* Current username */ | |
1034 | ||
1035 | username = cupsUser(); | |
1036 | ||
1037 | if ((pwd = getpwnam(username)) != NULL && pwd->pw_uid == getuid()) | |
1038 | { | |
1039 | httpSetAuthString(http, "PeerCred", username); | |
1040 | ||
1041 | DEBUG_printf(("8cups_local_auth: Returning authstring=\"%s\"", | |
1042 | http->authstring)); | |
1043 | ||
1044 | return (0); | |
1045 | } | |
1046 | } | |
1047 | # endif /* SO_PEERCRED && AF_LOCAL */ | |
1048 | ||
7ec11630 MS |
1049 | if ((schemedata = cups_auth_find(www_auth, "Local")) == NULL) |
1050 | return (1); | |
1051 | ||
ef416fc2 | 1052 | /* |
1053 | * Try opening a certificate file for this PID. If that fails, | |
1054 | * try the root certificate... | |
1055 | */ | |
1056 | ||
1057 | pid = getpid(); | |
1058 | snprintf(filename, sizeof(filename), "%s/certs/%d", cg->cups_statedir, pid); | |
1059 | if ((fp = fopen(filename, "r")) == NULL && pid > 0) | |
1060 | { | |
bc44d920 | 1061 | /* |
e07d4801 | 1062 | * No certificate for this PID; see if we can get the root certificate... |
bc44d920 | 1063 | */ |
1064 | ||
bf265b3a | 1065 | DEBUG_printf(("9cups_local_auth: Unable to open file \"%s\": %s", filename, strerror(errno))); |
e07d4801 | 1066 | |
7ec11630 | 1067 | if (!cups_auth_param(schemedata, "trc", trc, sizeof(trc))) |
e07d4801 MS |
1068 | { |
1069 | /* | |
1070 | * Scheduler doesn't want us to use the root certificate... | |
1071 | */ | |
1072 | ||
1073 | return (1); | |
1074 | } | |
1075 | ||
ef416fc2 | 1076 | snprintf(filename, sizeof(filename), "%s/certs/0", cg->cups_statedir); |
bf265b3a MS |
1077 | if ((fp = fopen(filename, "r")) == NULL) |
1078 | DEBUG_printf(("9cups_local_auth: Unable to open file \"%s\": %s", filename, strerror(errno))); | |
ef416fc2 | 1079 | } |
1080 | ||
f7deaa1a | 1081 | if (fp) |
ef416fc2 | 1082 | { |
f7deaa1a | 1083 | /* |
1084 | * Read the certificate from the file... | |
1085 | */ | |
ef416fc2 | 1086 | |
6961465f MS |
1087 | char certificate[33], /* Certificate string */ |
1088 | *certptr; /* Pointer to certificate string */ | |
1089 | ||
1090 | certptr = fgets(certificate, sizeof(certificate), fp); | |
f7deaa1a | 1091 | fclose(fp); |
ef416fc2 | 1092 | |
6961465f MS |
1093 | if (certptr) |
1094 | { | |
1095 | /* | |
1096 | * Set the authorization string and return... | |
1097 | */ | |
ef416fc2 | 1098 | |
6961465f | 1099 | httpSetAuthString(http, "Local", certificate); |
ef416fc2 | 1100 | |
6961465f MS |
1101 | DEBUG_printf(("8cups_local_auth: Returning authstring=\"%s\"", |
1102 | http->authstring)); | |
ef416fc2 | 1103 | |
6961465f MS |
1104 | return (0); |
1105 | } | |
f7deaa1a | 1106 | } |
1107 | ||
1108 | return (1); | |
ef416fc2 | 1109 | #endif /* WIN32 || __EMX__ */ |
1110 | } |