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Commit | Line | Data |
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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> | |
19dc16f7 | 20 | #if defined(_WIN32) || defined(__EMX__) |
ef416fc2 | 21 | # include <io.h> |
22 | #else | |
23 | # include <unistd.h> | |
19dc16f7 | 24 | #endif /* _WIN32 || __EMX__ */ |
ef416fc2 | 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 | 268 | |
5737d5eb | 269 | if (_httpSetDigestAuthString(http, nonce, method, resource)) |
16f67389 | 270 | break; |
7ec11630 MS |
271 | } |
272 | } | |
273 | ||
274 | if (http->authstring) | |
275 | { | |
276 | DEBUG_printf(("1cupsDoAuthentication: authstring=\"%s\"", http->authstring)); | |
277 | ||
278 | return (0); | |
ef416fc2 | 279 | } |
f14324a7 MS |
280 | else |
281 | { | |
7ec11630 | 282 | DEBUG_printf(("1cupsDoAuthentication: Unknown auth type: \"%s\"", www_auth)); |
cb7f98ee | 283 | http->status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED; |
7ec11630 | 284 | |
f14324a7 MS |
285 | return (-1); |
286 | } | |
ef416fc2 | 287 | } |
288 | ||
289 | ||
f7deaa1a | 290 | #ifdef HAVE_GSSAPI |
f14324a7 MS |
291 | /* |
292 | * '_cupsSetNegotiateAuthString()' - Set the Kerberos authentication string. | |
293 | */ | |
294 | ||
295 | int /* O - 0 on success, -1 on error */ | |
296 | _cupsSetNegotiateAuthString( | |
eac3a0a0 MS |
297 | http_t *http, /* I - Connection to server */ |
298 | const char *method, /* I - Request method ("GET", "POST", "PUT") */ | |
299 | const char *resource) /* I - Resource path */ | |
f14324a7 MS |
300 | { |
301 | OM_uint32 minor_status, /* Minor status code */ | |
302 | major_status; /* Major status code */ | |
303 | gss_buffer_desc output_token = GSS_C_EMPTY_BUFFER; | |
07ed0e9a | 304 | /* Output token */ |
f14324a7 MS |
305 | |
306 | ||
321d8d57 MS |
307 | (void)method; |
308 | (void)resource; | |
309 | ||
f14324a7 MS |
310 | # ifdef __APPLE__ |
311 | /* | |
312 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
313 | * to use it... | |
314 | */ | |
315 | ||
6d8021f4 | 316 | if (&gss_init_sec_context == NULL) |
f14324a7 MS |
317 | { |
318 | DEBUG_puts("1_cupsSetNegotiateAuthString: Weak-linked GSSAPI/Kerberos " | |
319 | "framework is not present"); | |
320 | return (-1); | |
321 | } | |
322 | # endif /* __APPLE__ */ | |
323 | ||
324 | if (http->gssname == GSS_C_NO_NAME) | |
325 | { | |
eac3a0a0 | 326 | http->gssname = cups_gss_getname(http, _cupsGSSServiceName()); |
f14324a7 MS |
327 | } |
328 | ||
329 | if (http->gssctx != GSS_C_NO_CONTEXT) | |
330 | { | |
331 | gss_delete_sec_context(&minor_status, &http->gssctx, GSS_C_NO_BUFFER); | |
332 | http->gssctx = GSS_C_NO_CONTEXT; | |
333 | } | |
334 | ||
eac3a0a0 MS |
335 | major_status = gss_init_sec_context(&minor_status, GSS_C_NO_CREDENTIAL, |
336 | &http->gssctx, | |
337 | http->gssname, http->gssmech, | |
338 | GSS_C_MUTUAL_FLAG | GSS_C_INTEG_FLAG, | |
339 | GSS_C_INDEFINITE, | |
340 | GSS_C_NO_CHANNEL_BINDINGS, | |
341 | GSS_C_NO_BUFFER, &http->gssmech, | |
342 | &output_token, NULL, NULL); | |
343 | ||
accedcf8 | 344 | # ifdef HAVE_GSS_ACQUIRE_CRED_EX_F |
eac3a0a0 MS |
345 | if (major_status == GSS_S_NO_CRED) |
346 | { | |
347 | /* | |
348 | * Ask the user for credentials... | |
349 | */ | |
350 | ||
351 | char prompt[1024], /* Prompt for user */ | |
352 | userbuf[256]; /* Kerberos username */ | |
353 | const char *username, /* Username string */ | |
354 | *password; /* Password string */ | |
355 | _cups_gss_acquire_t data; /* Callback data */ | |
49c59293 | 356 | gss_auth_identity_desc identity; /* Kerberos user identity */ |
eac3a0a0 MS |
357 | _cups_globals_t *cg = _cupsGlobals(); |
358 | /* Per-thread global data */ | |
359 | ||
360 | if (!cg->lang_default) | |
361 | cg->lang_default = cupsLangDefault(); | |
362 | ||
363 | snprintf(prompt, sizeof(prompt), | |
364 | _cupsLangString(cg->lang_default, _("Password for %s on %s? ")), | |
f228370c | 365 | cupsUser(), http->gsshost); |
eac3a0a0 MS |
366 | |
367 | if ((password = cupsGetPassword2(prompt, http, method, resource)) == NULL) | |
368 | return (-1); | |
369 | ||
370 | /* | |
371 | * Try to acquire credentials... | |
372 | */ | |
373 | ||
374 | username = cupsUser(); | |
375 | if (!strchr(username, '@')) | |
376 | { | |
f228370c | 377 | snprintf(userbuf, sizeof(userbuf), "%s@%s", username, http->gsshost); |
eac3a0a0 MS |
378 | username = userbuf; |
379 | } | |
380 | ||
381 | identity.type = GSS_AUTH_IDENTITY_TYPE_1; | |
382 | identity.flags = 0; | |
383 | identity.username = (char *)username; | |
384 | identity.realm = (char *)""; | |
385 | identity.password = (char *)password; | |
386 | identity.credentialsRef = NULL; | |
387 | ||
388 | data.sem = dispatch_semaphore_create(0); | |
389 | data.major = 0; | |
390 | data.creds = NULL; | |
391 | ||
392 | if (data.sem) | |
393 | { | |
5dcbe84d | 394 | 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 |
395 | |
396 | if (major_status == GSS_S_COMPLETE) | |
397 | { | |
398 | dispatch_semaphore_wait(data.sem, DISPATCH_TIME_FOREVER); | |
399 | major_status = data.major; | |
400 | } | |
401 | ||
402 | dispatch_release(data.sem); | |
403 | ||
404 | if (major_status == GSS_S_COMPLETE) | |
405 | { | |
406 | OM_uint32 release_minor; /* Minor status from releasing creds */ | |
407 | ||
408 | major_status = gss_init_sec_context(&minor_status, data.creds, | |
409 | &http->gssctx, | |
410 | http->gssname, http->gssmech, | |
411 | GSS_C_MUTUAL_FLAG | GSS_C_INTEG_FLAG, | |
412 | GSS_C_INDEFINITE, | |
413 | GSS_C_NO_CHANNEL_BINDINGS, | |
414 | GSS_C_NO_BUFFER, &http->gssmech, | |
415 | &output_token, NULL, NULL); | |
416 | gss_release_cred(&release_minor, &data.creds); | |
417 | } | |
418 | } | |
419 | } | |
accedcf8 | 420 | # endif /* HAVE_GSS_ACQUIRED_CRED_EX_F */ |
f14324a7 MS |
421 | |
422 | if (GSS_ERROR(major_status)) | |
423 | { | |
424 | cups_gss_printf(major_status, minor_status, | |
425 | "_cupsSetNegotiateAuthString: Unable to initialize " | |
426 | "security context"); | |
427 | return (-1); | |
428 | } | |
429 | ||
accedcf8 | 430 | # ifdef DEBUG |
eac3a0a0 | 431 | else if (major_status == GSS_S_CONTINUE_NEEDED) |
f14324a7 MS |
432 | cups_gss_printf(major_status, minor_status, |
433 | "_cupsSetNegotiateAuthString: Continuation needed!"); | |
accedcf8 | 434 | # endif /* DEBUG */ |
f14324a7 MS |
435 | |
436 | if (output_token.length > 0 && output_token.length <= 65536) | |
437 | { | |
438 | /* | |
439 | * Allocate the authorization string since Windows KDCs can have | |
440 | * arbitrarily large credentials... | |
441 | */ | |
442 | ||
7e86f2f6 MS |
443 | int authsize = 10 + /* "Negotiate " */ |
444 | (int)output_token.length * 4 / 3 + 1 + 1; | |
445 | /* Base64 + nul */ | |
f14324a7 MS |
446 | |
447 | httpSetAuthString(http, NULL, NULL); | |
448 | ||
7e86f2f6 | 449 | if ((http->authstring = malloc((size_t)authsize)) == NULL) |
f14324a7 MS |
450 | { |
451 | http->authstring = http->_authstring; | |
452 | authsize = sizeof(http->_authstring); | |
453 | } | |
454 | ||
07623986 | 455 | strlcpy(http->authstring, "Negotiate ", (size_t)authsize); |
f14324a7 | 456 | httpEncode64_2(http->authstring + 10, authsize - 10, output_token.value, |
7e86f2f6 | 457 | (int)output_token.length); |
f14324a7 MS |
458 | |
459 | gss_release_buffer(&minor_status, &output_token); | |
460 | } | |
461 | else | |
462 | { | |
463 | DEBUG_printf(("1_cupsSetNegotiateAuthString: Kerberos credentials too " | |
464 | "large - %d bytes!", (int)output_token.length)); | |
465 | gss_release_buffer(&minor_status, &output_token); | |
466 | ||
467 | return (-1); | |
468 | } | |
469 | ||
470 | return (0); | |
471 | } | |
accedcf8 | 472 | #endif /* HAVE_GSSAPI */ |
f14324a7 MS |
473 | |
474 | ||
7ec11630 MS |
475 | /* |
476 | * 'cups_auth_find()' - Find the named WWW-Authenticate scheme. | |
477 | * | |
478 | * The "www_authenticate" parameter points to the current position in the header. | |
479 | * | |
480 | * Returns @code NULL@ if the auth scheme is not present. | |
481 | */ | |
482 | ||
483 | static const char * /* O - Start of matching scheme or @code NULL@ if not found */ | |
484 | cups_auth_find(const char *www_authenticate, /* I - Pointer into WWW-Authenticate header */ | |
485 | const char *scheme) /* I - Authentication scheme */ | |
486 | { | |
487 | size_t schemelen = strlen(scheme); /* Length of scheme */ | |
488 | ||
489 | ||
91bc88eb MS |
490 | DEBUG_printf(("8cups_auth_find(www_authenticate=\"%s\", scheme=\"%s\"(%d))", www_authenticate, scheme, (int)schemelen)); |
491 | ||
7ec11630 MS |
492 | while (*www_authenticate) |
493 | { | |
494 | /* | |
495 | * Skip leading whitespace and commas... | |
496 | */ | |
497 | ||
91bc88eb | 498 | DEBUG_printf(("9cups_auth_find: Before whitespace: \"%s\"", www_authenticate)); |
7ec11630 MS |
499 | while (isspace(*www_authenticate & 255) || *www_authenticate == ',') |
500 | www_authenticate ++; | |
91bc88eb | 501 | DEBUG_printf(("9cups_auth_find: After whitespace: \"%s\"", www_authenticate)); |
7ec11630 MS |
502 | |
503 | /* | |
504 | * See if this is "Scheme" followed by whitespace or the end of the string. | |
505 | */ | |
506 | ||
c944b62b | 507 | if (!strncmp(www_authenticate, scheme, schemelen) && (isspace(www_authenticate[schemelen] & 255) || www_authenticate[schemelen] == ',' || !www_authenticate[schemelen])) |
7ec11630 MS |
508 | { |
509 | /* | |
510 | * Yes, this is the start of the scheme-specific information... | |
511 | */ | |
512 | ||
91bc88eb MS |
513 | DEBUG_printf(("9cups_auth_find: Returning \"%s\".", www_authenticate)); |
514 | ||
7ec11630 MS |
515 | return (www_authenticate); |
516 | } | |
517 | ||
518 | /* | |
519 | * Skip the scheme name or param="value" string... | |
520 | */ | |
521 | ||
522 | while (!isspace(*www_authenticate & 255) && *www_authenticate) | |
523 | { | |
524 | if (*www_authenticate == '\"') | |
525 | { | |
526 | /* | |
527 | * Skip quoted value... | |
528 | */ | |
529 | ||
91bc88eb MS |
530 | www_authenticate ++; |
531 | while (*www_authenticate && *www_authenticate != '\"') | |
7ec11630 | 532 | www_authenticate ++; |
91bc88eb MS |
533 | |
534 | DEBUG_printf(("9cups_auth_find: After quoted: \"%s\"", www_authenticate)); | |
7ec11630 MS |
535 | } |
536 | ||
537 | www_authenticate ++; | |
538 | } | |
91bc88eb MS |
539 | |
540 | DEBUG_printf(("9cups_auth_find: After skip: \"%s\"", www_authenticate)); | |
7ec11630 MS |
541 | } |
542 | ||
91bc88eb MS |
543 | DEBUG_puts("9cups_auth_find: Returning NULL."); |
544 | ||
7ec11630 MS |
545 | return (NULL); |
546 | } | |
547 | ||
548 | ||
549 | /* | |
550 | * 'cups_auth_param()' - Copy the value for the named authentication parameter, | |
551 | * if present. | |
552 | */ | |
553 | ||
554 | static const char * /* O - Parameter value or @code NULL@ if not present */ | |
555 | cups_auth_param(const char *scheme, /* I - Pointer to auth data */ | |
556 | const char *name, /* I - Name of parameter */ | |
557 | char *value, /* I - Value buffer */ | |
558 | size_t valsize) /* I - Size of value buffer */ | |
559 | { | |
560 | char *valptr = value, /* Pointer into value buffer */ | |
561 | *valend = value + valsize - 1; /* Pointer to end of buffer */ | |
562 | size_t namelen = strlen(name); /* Name length */ | |
563 | int param; /* Is this a parameter? */ | |
564 | ||
565 | ||
91bc88eb MS |
566 | DEBUG_printf(("8cups_auth_param(scheme=\"%s\", name=\"%s\", value=%p, valsize=%d)", scheme, name, (void *)value, (int)valsize)); |
567 | ||
7ec11630 MS |
568 | while (!isspace(*scheme & 255) && *scheme) |
569 | scheme ++; | |
570 | ||
571 | while (*scheme) | |
572 | { | |
573 | while (isspace(*scheme & 255) || *scheme == ',') | |
574 | scheme ++; | |
575 | ||
576 | if (!strncmp(scheme, name, namelen) && scheme[namelen] == '=') | |
577 | { | |
578 | /* | |
579 | * Found the parameter, copy the value... | |
580 | */ | |
581 | ||
582 | scheme += namelen + 1; | |
583 | if (*scheme == '\"') | |
584 | { | |
585 | scheme ++; | |
586 | ||
587 | while (*scheme && *scheme != '\"') | |
588 | { | |
589 | if (valptr < valend) | |
590 | *valptr++ = *scheme; | |
591 | ||
592 | scheme ++; | |
593 | } | |
594 | } | |
595 | else | |
596 | { | |
597 | while (*scheme && strchr("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~+/=", *scheme)) | |
598 | { | |
599 | if (valptr < valend) | |
600 | *valptr++ = *scheme; | |
601 | ||
602 | scheme ++; | |
603 | } | |
604 | } | |
605 | ||
606 | *valptr = '\0'; | |
607 | ||
91bc88eb MS |
608 | DEBUG_printf(("9cups_auth_param: Returning \"%s\".", value)); |
609 | ||
7ec11630 MS |
610 | return (value); |
611 | } | |
612 | ||
613 | /* | |
614 | * Skip the param=value string... | |
615 | */ | |
616 | ||
617 | param = 0; | |
618 | ||
619 | while (!isspace(*scheme & 255) && *scheme) | |
620 | { | |
621 | if (*scheme == '=') | |
622 | param = 1; | |
623 | else if (*scheme == '\"') | |
624 | { | |
625 | /* | |
626 | * Skip quoted value... | |
627 | */ | |
628 | ||
91bc88eb MS |
629 | scheme ++; |
630 | while (*scheme && *scheme != '\"') | |
7ec11630 MS |
631 | scheme ++; |
632 | } | |
633 | ||
634 | scheme ++; | |
635 | } | |
636 | ||
637 | /* | |
638 | * If this wasn't a parameter, we are at the end of this scheme's | |
639 | * parameters... | |
640 | */ | |
641 | ||
642 | if (!param) | |
643 | break; | |
644 | } | |
645 | ||
646 | *value = '\0'; | |
647 | ||
91bc88eb MS |
648 | DEBUG_puts("9cups_auth_param: Returning NULL."); |
649 | ||
7ec11630 MS |
650 | return (NULL); |
651 | } | |
652 | ||
653 | ||
654 | /* | |
655 | * 'cups_auth_scheme()' - Get the (next) WWW-Authenticate scheme. | |
656 | * | |
657 | * The "www_authenticate" parameter points to the current position in the header. | |
658 | * | |
659 | * Returns @code NULL@ if there are no (more) auth schemes present. | |
660 | */ | |
661 | ||
662 | static const char * /* O - Start of scheme or @code NULL@ if not found */ | |
663 | cups_auth_scheme(const char *www_authenticate, /* I - Pointer into WWW-Authenticate header */ | |
664 | char *scheme, /* I - Scheme name buffer */ | |
665 | size_t schemesize) /* I - Size of buffer */ | |
666 | { | |
667 | const char *start; /* Start of scheme data */ | |
668 | char *sptr = scheme, /* Pointer into scheme buffer */ | |
669 | *send = scheme + schemesize - 1;/* End of scheme buffer */ | |
670 | int param; /* Is this a parameter? */ | |
671 | ||
672 | ||
91bc88eb MS |
673 | DEBUG_printf(("8cups_auth_scheme(www_authenticate=\"%s\", scheme=%p, schemesize=%d)", www_authenticate, (void *)scheme, (int)schemesize)); |
674 | ||
7ec11630 MS |
675 | while (*www_authenticate) |
676 | { | |
677 | /* | |
678 | * Skip leading whitespace and commas... | |
679 | */ | |
680 | ||
681 | while (isspace(*www_authenticate & 255) || *www_authenticate == ',') | |
682 | www_authenticate ++; | |
683 | ||
684 | /* | |
685 | * Parse the scheme name or param="value" string... | |
686 | */ | |
687 | ||
44cb0dd2 | 688 | for (sptr = scheme, start = www_authenticate, param = 0; *www_authenticate && *www_authenticate != ',' && !isspace(*www_authenticate & 255); www_authenticate ++) |
7ec11630 MS |
689 | { |
690 | if (*www_authenticate == '=') | |
691 | param = 1; | |
692 | else if (!param && sptr < send) | |
693 | *sptr++ = *www_authenticate; | |
694 | else if (*www_authenticate == '\"') | |
695 | { | |
696 | /* | |
697 | * Skip quoted value... | |
698 | */ | |
699 | ||
91bc88eb MS |
700 | www_authenticate ++; |
701 | while (*www_authenticate && *www_authenticate != '\"') | |
7ec11630 MS |
702 | www_authenticate ++; |
703 | } | |
704 | } | |
705 | ||
706 | if (sptr > scheme && !param) | |
707 | { | |
708 | *sptr = '\0'; | |
91bc88eb MS |
709 | |
710 | DEBUG_printf(("9cups_auth_scheme: Returning \"%s\".", start)); | |
711 | ||
7ec11630 MS |
712 | return (start); |
713 | } | |
714 | } | |
715 | ||
716 | *scheme = '\0'; | |
717 | ||
91bc88eb MS |
718 | DEBUG_puts("9cups_auth_scheme: Returning NULL."); |
719 | ||
7ec11630 MS |
720 | return (NULL); |
721 | } | |
722 | ||
723 | ||
accedcf8 | 724 | #ifdef HAVE_GSSAPI |
eac3a0a0 | 725 | # ifdef HAVE_GSS_ACQUIRE_CRED_EX_F |
f7deaa1a | 726 | /* |
eac3a0a0 MS |
727 | * 'cups_gss_acquire()' - Kerberos credentials callback. |
728 | */ | |
729 | static void | |
730 | cups_gss_acquire( | |
731 | void *ctx, /* I - Caller context */ | |
732 | OM_uint32 major, /* I - Major error code */ | |
733 | gss_status_id_t status, /* I - Status (unused) */ | |
734 | gss_cred_id_t creds, /* I - Credentials (if any) */ | |
735 | gss_OID_set oids, /* I - Mechanism OIDs (unused) */ | |
736 | OM_uint32 time_rec) /* I - Timestamp (unused) */ | |
737 | { | |
738 | uint32_t min; /* Minor error code */ | |
739 | _cups_gss_acquire_t *data; /* Callback data */ | |
740 | ||
741 | ||
742 | (void)status; | |
743 | (void)time_rec; | |
744 | ||
745 | data = (_cups_gss_acquire_t *)ctx; | |
746 | data->major = major; | |
747 | data->creds = creds; | |
748 | ||
749 | gss_release_oid_set(&min, &oids); | |
750 | dispatch_semaphore_signal(data->sem); | |
751 | } | |
752 | # endif /* HAVE_GSS_ACQUIRE_CRED_EX_F */ | |
753 | ||
754 | ||
755 | /* | |
756 | * 'cups_gss_getname()' - Get CUPS service credentials for authentication. | |
f7deaa1a | 757 | */ |
758 | ||
759 | static gss_name_t /* O - Server name */ | |
eac3a0a0 | 760 | cups_gss_getname( |
f7deaa1a | 761 | http_t *http, /* I - Connection to server */ |
762 | const char *service_name) /* I - Service name */ | |
763 | { | |
764 | gss_buffer_desc token = GSS_C_EMPTY_BUFFER; | |
765 | /* Service token */ | |
bc44d920 | 766 | OM_uint32 major_status, /* Major status code */ |
767 | minor_status; /* Minor status code */ | |
768 | gss_name_t server_name; /* Server name */ | |
eac3a0a0 | 769 | char buf[1024]; /* Name buffer */ |
bc44d920 | 770 | |
771 | ||
eac3a0a0 | 772 | DEBUG_printf(("7cups_gss_getname(http=%p, service_name=\"%s\")", http, |
e07d4801 MS |
773 | service_name)); |
774 | ||
775 | ||
bc44d920 | 776 | /* |
777 | * Get the hostname... | |
778 | */ | |
f7deaa1a | 779 | |
eac3a0a0 MS |
780 | if (!http->gsshost[0]) |
781 | { | |
782 | httpGetHostname(http, http->gsshost, sizeof(http->gsshost)); | |
bc44d920 | 783 | |
eac3a0a0 MS |
784 | if (!strcmp(http->gsshost, "localhost")) |
785 | { | |
786 | if (gethostname(http->gsshost, sizeof(http->gsshost)) < 0) | |
787 | { | |
788 | DEBUG_printf(("1cups_gss_getname: gethostname() failed: %s", | |
789 | strerror(errno))); | |
790 | http->gsshost[0] = '\0'; | |
791 | return (NULL); | |
792 | } | |
793 | ||
794 | if (!strchr(http->gsshost, '.')) | |
795 | { | |
796 | /* | |
797 | * The hostname is not a FQDN, so look it up... | |
798 | */ | |
799 | ||
800 | struct hostent *host; /* Host entry to get FQDN */ | |
801 | ||
802 | if ((host = gethostbyname(http->gsshost)) != NULL && host->h_name) | |
803 | { | |
804 | /* | |
805 | * Use the resolved hostname... | |
806 | */ | |
807 | ||
808 | strlcpy(http->gsshost, host->h_name, sizeof(http->gsshost)); | |
809 | } | |
810 | else | |
811 | { | |
812 | DEBUG_printf(("1cups_gss_getname: gethostbyname(\"%s\") failed.", | |
813 | http->gsshost)); | |
814 | http->gsshost[0] = '\0'; | |
815 | return (NULL); | |
816 | } | |
817 | } | |
818 | } | |
819 | } | |
f7deaa1a | 820 | |
821 | /* | |
eac3a0a0 | 822 | * Get a service name we can use for authentication purposes... |
f7deaa1a | 823 | */ |
824 | ||
eac3a0a0 | 825 | snprintf(buf, sizeof(buf), "%s@%s", service_name, http->gsshost); |
f7deaa1a | 826 | |
eac3a0a0 | 827 | DEBUG_printf(("8cups_gss_getname: Looking up \"%s\".", buf)); |
7ff4fea9 | 828 | |
f7deaa1a | 829 | token.value = buf; |
830 | token.length = strlen(buf); | |
831 | server_name = GSS_C_NO_NAME; | |
832 | major_status = gss_import_name(&minor_status, &token, | |
833 | GSS_C_NT_HOSTBASED_SERVICE, | |
834 | &server_name); | |
835 | ||
836 | if (GSS_ERROR(major_status)) | |
837 | { | |
e07d4801 | 838 | cups_gss_printf(major_status, minor_status, |
eac3a0a0 | 839 | "cups_gss_getname: gss_import_name() failed"); |
f7deaa1a | 840 | return (NULL); |
841 | } | |
842 | ||
843 | return (server_name); | |
844 | } | |
e07d4801 MS |
845 | |
846 | ||
847 | # ifdef DEBUG | |
848 | /* | |
eac3a0a0 | 849 | * 'cups_gss_printf()' - Show debug error messages from GSSAPI. |
e07d4801 MS |
850 | */ |
851 | ||
852 | static void | |
853 | cups_gss_printf(OM_uint32 major_status,/* I - Major status code */ | |
854 | OM_uint32 minor_status,/* I - Minor status code */ | |
855 | const char *message) /* I - Prefix for error message */ | |
856 | { | |
857 | OM_uint32 err_major_status, /* Major status code for display */ | |
858 | err_minor_status; /* Minor status code for display */ | |
859 | OM_uint32 msg_ctx; /* Message context */ | |
860 | gss_buffer_desc major_status_string = GSS_C_EMPTY_BUFFER, | |
861 | /* Major status message */ | |
862 | minor_status_string = GSS_C_EMPTY_BUFFER; | |
863 | /* Minor status message */ | |
864 | ||
865 | ||
866 | msg_ctx = 0; | |
867 | err_major_status = gss_display_status(&err_minor_status, | |
868 | major_status, | |
869 | GSS_C_GSS_CODE, | |
870 | GSS_C_NO_OID, | |
871 | &msg_ctx, | |
872 | &major_status_string); | |
873 | ||
874 | if (!GSS_ERROR(err_major_status)) | |
875 | gss_display_status(&err_minor_status, minor_status, GSS_C_MECH_CODE, | |
876 | GSS_C_NULL_OID, &msg_ctx, &minor_status_string); | |
877 | ||
68b10830 | 878 | DEBUG_printf(("1%s: %s, %s", message, (char *)major_status_string.value, |
e07d4801 MS |
879 | (char *)minor_status_string.value)); |
880 | ||
881 | gss_release_buffer(&err_minor_status, &major_status_string); | |
882 | gss_release_buffer(&err_minor_status, &minor_status_string); | |
883 | } | |
884 | # endif /* DEBUG */ | |
f7deaa1a | 885 | #endif /* HAVE_GSSAPI */ |
886 | ||
887 | ||
ef416fc2 | 888 | /* |
889 | * 'cups_local_auth()' - Get the local authorization certificate if | |
eac3a0a0 | 890 | * available/applicable. |
ef416fc2 | 891 | */ |
892 | ||
f7deaa1a | 893 | static int /* O - 0 if available */ |
bc44d920 | 894 | /* 1 if not available */ |
f7deaa1a | 895 | /* -1 error */ |
ef416fc2 | 896 | cups_local_auth(http_t *http) /* I - HTTP connection to server */ |
897 | { | |
19dc16f7 | 898 | #if defined(_WIN32) || defined(__EMX__) |
ef416fc2 | 899 | /* |
19dc16f7 | 900 | * Currently _WIN32 and OS-2 do not support the CUPS server... |
ef416fc2 | 901 | */ |
902 | ||
bc44d920 | 903 | return (1); |
ef416fc2 | 904 | #else |
f7deaa1a | 905 | int pid; /* Current process ID */ |
906 | FILE *fp; /* Certificate file */ | |
e07d4801 | 907 | char trc[16], /* Try Root Certificate parameter */ |
6961465f | 908 | filename[1024]; /* Certificate filename */ |
7ec11630 MS |
909 | const char *www_auth, /* WWW-Authenticate header */ |
910 | *schemedata; /* Data for the named auth scheme */ | |
ef416fc2 | 911 | _cups_globals_t *cg = _cupsGlobals(); /* Global data */ |
bc44d920 | 912 | # if defined(HAVE_AUTHORIZATION_H) |
f7deaa1a | 913 | OSStatus status; /* Status */ |
914 | AuthorizationItem auth_right; /* Authorization right */ | |
915 | AuthorizationRights auth_rights; /* Authorization rights */ | |
916 | AuthorizationFlags auth_flags; /* Authorization flags */ | |
917 | AuthorizationExternalForm auth_extrn; /* Authorization ref external */ | |
918 | char auth_key[1024]; /* Buffer */ | |
919 | char buffer[1024]; /* Buffer */ | |
bc44d920 | 920 | # endif /* HAVE_AUTHORIZATION_H */ |
ef416fc2 | 921 | |
922 | ||
807315e6 | 923 | DEBUG_printf(("7cups_local_auth(http=%p) hostaddr=%s, hostname=\"%s\"", (void *)http, httpAddrString(http->hostaddr, filename, sizeof(filename)), http->hostname)); |
ef416fc2 | 924 | |
925 | /* | |
926 | * See if we are accessing localhost... | |
927 | */ | |
928 | ||
7ec11630 | 929 | if (!httpAddrLocalhost(http->hostaddr) && _cups_strcasecmp(http->hostname, "localhost") != 0) |
ef416fc2 | 930 | { |
e07d4801 | 931 | DEBUG_puts("8cups_local_auth: Not a local connection!"); |
bc44d920 | 932 | return (1); |
ef416fc2 | 933 | } |
934 | ||
accedcf8 MS |
935 | www_auth = httpGetField(http, HTTP_FIELD_WWW_AUTHENTICATE); |
936 | ||
bc44d920 | 937 | # if defined(HAVE_AUTHORIZATION_H) |
f7deaa1a | 938 | /* |
939 | * Delete any previous authorization reference... | |
940 | */ | |
f14324a7 | 941 | |
b94498cf | 942 | if (http->auth_ref) |
f7deaa1a | 943 | { |
b94498cf | 944 | AuthorizationFree(http->auth_ref, kAuthorizationFlagDefaults); |
945 | http->auth_ref = NULL; | |
f7deaa1a | 946 | } |
947 | ||
91bc88eb | 948 | if (!getenv("GATEWAY_INTERFACE") && (schemedata = cups_auth_find(www_auth, "AuthRef")) != NULL && cups_auth_param(schemedata, "key", auth_key, sizeof(auth_key))) |
f7deaa1a | 949 | { |
7ec11630 | 950 | status = AuthorizationCreate(NULL, kAuthorizationEmptyEnvironment, kAuthorizationFlagDefaults, &http->auth_ref); |
f7deaa1a | 951 | if (status != errAuthorizationSuccess) |
952 | { | |
e07d4801 | 953 | DEBUG_printf(("8cups_local_auth: AuthorizationCreate() returned %d (%s)", |
f7deaa1a | 954 | (int)status, cssmErrorString(status))); |
955 | return (-1); | |
956 | } | |
957 | ||
958 | auth_right.name = auth_key; | |
959 | auth_right.valueLength = 0; | |
960 | auth_right.value = NULL; | |
961 | auth_right.flags = 0; | |
962 | ||
963 | auth_rights.count = 1; | |
964 | auth_rights.items = &auth_right; | |
965 | ||
f14324a7 | 966 | auth_flags = kAuthorizationFlagDefaults | |
f7deaa1a | 967 | kAuthorizationFlagPreAuthorize | |
f14324a7 | 968 | kAuthorizationFlagInteractionAllowed | |
f7deaa1a | 969 | kAuthorizationFlagExtendRights; |
970 | ||
f14324a7 MS |
971 | status = AuthorizationCopyRights(http->auth_ref, &auth_rights, |
972 | kAuthorizationEmptyEnvironment, | |
f7deaa1a | 973 | auth_flags, NULL); |
974 | if (status == errAuthorizationSuccess) | |
b94498cf | 975 | status = AuthorizationMakeExternalForm(http->auth_ref, &auth_extrn); |
f7deaa1a | 976 | |
977 | if (status == errAuthorizationSuccess) | |
978 | { | |
979 | /* | |
980 | * Set the authorization string and return... | |
981 | */ | |
982 | ||
f14324a7 | 983 | httpEncode64_2(buffer, sizeof(buffer), (void *)&auth_extrn, |
f7deaa1a | 984 | sizeof(auth_extrn)); |
985 | ||
355e94dc | 986 | httpSetAuthString(http, "AuthRef", buffer); |
f7deaa1a | 987 | |
e07d4801 | 988 | DEBUG_printf(("8cups_local_auth: Returning authstring=\"%s\"", |
f7deaa1a | 989 | http->authstring)); |
990 | return (0); | |
991 | } | |
992 | else if (status == errAuthorizationCanceled) | |
993 | return (-1); | |
994 | ||
e07d4801 | 995 | DEBUG_printf(("9cups_local_auth: AuthorizationCopyRights() returned %d (%s)", |
f7deaa1a | 996 | (int)status, cssmErrorString(status))); |
997 | ||
998 | /* | |
999 | * Fall through to try certificates... | |
1000 | */ | |
1001 | } | |
bc44d920 | 1002 | # endif /* HAVE_AUTHORIZATION_H */ |
f7deaa1a | 1003 | |
7ec11630 MS |
1004 | # ifdef HAVE_GSSAPI |
1005 | if (cups_auth_find(www_auth, "Negotiate")) | |
1006 | return (1); | |
1007 | # endif /* HAVE_GSSAPI */ | |
7ec11630 | 1008 | |
f11a948a MS |
1009 | # if defined(SO_PEERCRED) && defined(AF_LOCAL) |
1010 | /* | |
1011 | * See if we can authenticate using the peer credentials provided over a | |
1012 | * domain socket; if so, specify "PeerCred username" as the authentication | |
1013 | * information... | |
1014 | */ | |
1015 | ||
7ec11630 MS |
1016 | if (http->hostaddr->addr.sa_family == AF_LOCAL && |
1017 | !getenv("GATEWAY_INTERFACE") && /* Not via CGI programs... */ | |
1018 | cups_auth_find(www_auth, "PeerCred")) | |
f11a948a MS |
1019 | { |
1020 | /* | |
1021 | * Verify that the current cupsUser() matches the current UID... | |
1022 | */ | |
1023 | ||
1024 | struct passwd *pwd; /* Password information */ | |
1025 | const char *username; /* Current username */ | |
1026 | ||
1027 | username = cupsUser(); | |
1028 | ||
1029 | if ((pwd = getpwnam(username)) != NULL && pwd->pw_uid == getuid()) | |
1030 | { | |
1031 | httpSetAuthString(http, "PeerCred", username); | |
1032 | ||
1033 | DEBUG_printf(("8cups_local_auth: Returning authstring=\"%s\"", | |
1034 | http->authstring)); | |
1035 | ||
1036 | return (0); | |
1037 | } | |
1038 | } | |
1039 | # endif /* SO_PEERCRED && AF_LOCAL */ | |
1040 | ||
7ec11630 MS |
1041 | if ((schemedata = cups_auth_find(www_auth, "Local")) == NULL) |
1042 | return (1); | |
1043 | ||
ef416fc2 | 1044 | /* |
1045 | * Try opening a certificate file for this PID. If that fails, | |
1046 | * try the root certificate... | |
1047 | */ | |
1048 | ||
1049 | pid = getpid(); | |
1050 | snprintf(filename, sizeof(filename), "%s/certs/%d", cg->cups_statedir, pid); | |
1051 | if ((fp = fopen(filename, "r")) == NULL && pid > 0) | |
1052 | { | |
bc44d920 | 1053 | /* |
e07d4801 | 1054 | * No certificate for this PID; see if we can get the root certificate... |
bc44d920 | 1055 | */ |
1056 | ||
bf265b3a | 1057 | DEBUG_printf(("9cups_local_auth: Unable to open file \"%s\": %s", filename, strerror(errno))); |
e07d4801 | 1058 | |
7ec11630 | 1059 | if (!cups_auth_param(schemedata, "trc", trc, sizeof(trc))) |
e07d4801 MS |
1060 | { |
1061 | /* | |
1062 | * Scheduler doesn't want us to use the root certificate... | |
1063 | */ | |
1064 | ||
1065 | return (1); | |
1066 | } | |
1067 | ||
ef416fc2 | 1068 | snprintf(filename, sizeof(filename), "%s/certs/0", cg->cups_statedir); |
bf265b3a MS |
1069 | if ((fp = fopen(filename, "r")) == NULL) |
1070 | DEBUG_printf(("9cups_local_auth: Unable to open file \"%s\": %s", filename, strerror(errno))); | |
ef416fc2 | 1071 | } |
1072 | ||
f7deaa1a | 1073 | if (fp) |
ef416fc2 | 1074 | { |
f7deaa1a | 1075 | /* |
1076 | * Read the certificate from the file... | |
1077 | */ | |
ef416fc2 | 1078 | |
6961465f MS |
1079 | char certificate[33], /* Certificate string */ |
1080 | *certptr; /* Pointer to certificate string */ | |
1081 | ||
1082 | certptr = fgets(certificate, sizeof(certificate), fp); | |
f7deaa1a | 1083 | fclose(fp); |
ef416fc2 | 1084 | |
6961465f MS |
1085 | if (certptr) |
1086 | { | |
1087 | /* | |
1088 | * Set the authorization string and return... | |
1089 | */ | |
ef416fc2 | 1090 | |
6961465f | 1091 | httpSetAuthString(http, "Local", certificate); |
ef416fc2 | 1092 | |
6961465f MS |
1093 | DEBUG_printf(("8cups_local_auth: Returning authstring=\"%s\"", |
1094 | http->authstring)); | |
ef416fc2 | 1095 | |
6961465f MS |
1096 | return (0); |
1097 | } | |
f7deaa1a | 1098 | } |
1099 | ||
1100 | return (1); | |
19dc16f7 | 1101 | #endif /* _WIN32 || __EMX__ */ |
ef416fc2 | 1102 | } |