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Commit | Line | Data |
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ef416fc2 | 1 | /* |
7e86f2f6 | 2 | * Authentication functions for CUPS. |
ef416fc2 | 3 | * |
fa26ab95 | 4 | * Copyright 2007-2019 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" |
fb863569 | 18 | #include "debug-internal.h" |
ef416fc2 | 19 | #include <fcntl.h> |
20 | #include <sys/stat.h> | |
19dc16f7 | 21 | #if defined(_WIN32) || defined(__EMX__) |
ef416fc2 | 22 | # include <io.h> |
23 | #else | |
24 | # include <unistd.h> | |
19dc16f7 | 25 | #endif /* _WIN32 || __EMX__ */ |
ef416fc2 | 26 | |
f7deaa1a | 27 | #if HAVE_AUTHORIZATION_H |
28 | # include <Security/Authorization.h> | |
f7deaa1a | 29 | #endif /* HAVE_AUTHORIZATION_H */ |
30 | ||
bc44d920 | 31 | #if defined(SO_PEERCRED) && defined(AF_LOCAL) |
32 | # include <pwd.h> | |
33 | #endif /* SO_PEERCRED && AF_LOCAL */ | |
34 | ||
ef416fc2 | 35 | |
36 | /* | |
37 | * Local functions... | |
38 | */ | |
39 | ||
7ec11630 MS |
40 | static const char *cups_auth_find(const char *www_authenticate, const char *scheme); |
41 | static const char *cups_auth_param(const char *scheme, const char *name, char *value, size_t valsize); | |
42 | static const char *cups_auth_scheme(const char *www_authenticate, char *scheme, size_t schemesize); | |
43 | ||
f7deaa1a | 44 | #ifdef HAVE_GSSAPI |
eac3a0a0 MS |
45 | # ifdef HAVE_GSS_ACQUIRE_CRED_EX_F |
46 | # ifdef HAVE_GSS_GSSAPI_SPI_H | |
47 | # include <GSS/gssapi_spi.h> | |
48 | # else | |
a2326b5b MS |
49 | # define GSS_AUTH_IDENTITY_TYPE_1 1 |
50 | # define gss_acquire_cred_ex_f __ApplePrivate_gss_acquire_cred_ex_f | |
53af7f21 | 51 | typedef struct gss_auth_identity /* @private@ */ |
eac3a0a0 MS |
52 | { |
53 | uint32_t type; | |
54 | uint32_t flags; | |
55 | char *username; | |
56 | char *realm; | |
57 | char *password; | |
58 | gss_buffer_t *credentialsRef; | |
49c59293 | 59 | } gss_auth_identity_desc; |
eac3a0a0 MS |
60 | extern OM_uint32 gss_acquire_cred_ex_f(gss_status_id_t, const gss_name_t, |
61 | OM_uint32, OM_uint32, const gss_OID, | |
62 | gss_cred_usage_t, gss_auth_identity_t, | |
63 | void *, void (*)(void *, OM_uint32, | |
64 | gss_status_id_t, | |
65 | gss_cred_id_t, | |
66 | gss_OID_set, | |
67 | OM_uint32)); | |
68 | # endif /* HAVE_GSS_GSSAPI_SPI_H */ | |
69 | # include <dispatch/dispatch.h> | |
70 | typedef struct _cups_gss_acquire_s /* Acquire callback data */ | |
71 | { | |
72 | dispatch_semaphore_t sem; /* Synchronization semaphore */ | |
73 | OM_uint32 major; /* Returned status code */ | |
74 | gss_cred_id_t creds; /* Returned credentials */ | |
75 | } _cups_gss_acquire_t; | |
76 | ||
77 | static void cups_gss_acquire(void *ctx, OM_uint32 major, | |
78 | gss_status_id_t status, | |
79 | gss_cred_id_t creds, gss_OID_set oids, | |
80 | OM_uint32 time_rec); | |
81 | # endif /* HAVE_GSS_ACQUIRE_CRED_EX_F */ | |
82 | static gss_name_t cups_gss_getname(http_t *http, const char *service_name); | |
f7deaa1a | 83 | # ifdef DEBUG |
e07d4801 MS |
84 | static void cups_gss_printf(OM_uint32 major_status, OM_uint32 minor_status, |
85 | const char *message); | |
355e94dc | 86 | # else |
e07d4801 MS |
87 | # define cups_gss_printf(major, minor, message) |
88 | # endif /* DEBUG */ | |
f7deaa1a | 89 | #endif /* HAVE_GSSAPI */ |
ef416fc2 | 90 | static int cups_local_auth(http_t *http); |
91 | ||
92 | ||
93 | /* | |
94 | * 'cupsDoAuthentication()' - Authenticate a request. | |
95 | * | |
cb7f98ee | 96 | * This function should be called in response to a @code HTTP_STATUS_UNAUTHORIZED@ |
ef416fc2 | 97 | * status, prior to resubmitting your request. |
98 | * | |
8072030b | 99 | * @since CUPS 1.1.20/macOS 10.4@ |
ef416fc2 | 100 | */ |
101 | ||
102 | int /* O - 0 on success, -1 on error */ | |
f11a948a MS |
103 | cupsDoAuthentication( |
104 | http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */ | |
105 | const char *method, /* I - Request method ("GET", "POST", "PUT") */ | |
106 | const char *resource) /* I - Resource path */ | |
ef416fc2 | 107 | { |
3e7fe0ca | 108 | const char *password, /* Password string */ |
7ec11630 MS |
109 | *www_auth, /* WWW-Authenticate header */ |
110 | *schemedata; /* Scheme-specific data */ | |
111 | char scheme[256], /* Scheme name */ | |
16f67389 | 112 | prompt[1024]; /* Prompt for user */ |
f7deaa1a | 113 | int localauth; /* Local authentication result */ |
b86bc4cf | 114 | _cups_globals_t *cg; /* Global data */ |
ef416fc2 | 115 | |
116 | ||
807315e6 | 117 | DEBUG_printf(("cupsDoAuthentication(http=%p, method=\"%s\", resource=\"%s\")", (void *)http, method, resource)); |
ef416fc2 | 118 | |
f11a948a MS |
119 | if (!http) |
120 | http = _cupsConnect(); | |
121 | ||
122 | if (!http || !method || !resource) | |
123 | return (-1); | |
124 | ||
5a6b583a MS |
125 | DEBUG_printf(("2cupsDoAuthentication: digest_tries=%d, userpass=\"%s\"", |
126 | http->digest_tries, http->userpass)); | |
127 | DEBUG_printf(("2cupsDoAuthentication: WWW-Authenticate=\"%s\"", | |
128 | httpGetField(http, HTTP_FIELD_WWW_AUTHENTICATE))); | |
129 | ||
ef416fc2 | 130 | /* |
131 | * Clear the current authentication string... | |
132 | */ | |
133 | ||
355e94dc | 134 | httpSetAuthString(http, NULL, NULL); |
ef416fc2 | 135 | |
136 | /* | |
137 | * See if we can do local authentication... | |
138 | */ | |
139 | ||
f7deaa1a | 140 | if (http->digest_tries < 3) |
ef416fc2 | 141 | { |
f7deaa1a | 142 | if ((localauth = cups_local_auth(http)) == 0) |
143 | { | |
e07d4801 | 144 | DEBUG_printf(("2cupsDoAuthentication: authstring=\"%s\"", |
f7deaa1a | 145 | http->authstring)); |
f14324a7 | 146 | |
cb7f98ee | 147 | if (http->status == HTTP_STATUS_UNAUTHORIZED) |
f7deaa1a | 148 | http->digest_tries ++; |
f14324a7 | 149 | |
f7deaa1a | 150 | return (0); |
151 | } | |
152 | else if (localauth == -1) | |
f11a948a | 153 | { |
cb7f98ee | 154 | http->status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED; |
f7deaa1a | 155 | return (-1); /* Error or canceled */ |
f11a948a | 156 | } |
ef416fc2 | 157 | } |
158 | ||
159 | /* | |
7ec11630 | 160 | * Nope, loop through the authentication schemes to find the first we support. |
ef416fc2 | 161 | */ |
162 | ||
7ec11630 | 163 | www_auth = httpGetField(http, HTTP_FIELD_WWW_AUTHENTICATE); |
3e7fe0ca | 164 | |
7ec11630 | 165 | for (schemedata = cups_auth_scheme(www_auth, scheme, sizeof(scheme)); schemedata; schemedata = cups_auth_scheme(schemedata + strlen(scheme), scheme, sizeof(scheme))) |
ef416fc2 | 166 | { |
167 | /* | |
7ec11630 | 168 | * Check the scheme name... |
ef416fc2 | 169 | */ |
170 | ||
7ec11630 MS |
171 | #ifdef HAVE_GSSAPI |
172 | if (!_cups_strcasecmp(scheme, "Negotiate")) | |
173 | { | |
174 | /* | |
175 | * Kerberos authentication... | |
176 | */ | |
5a9febac | 177 | |
7ec11630 MS |
178 | if (_cupsSetNegotiateAuthString(http, method, resource)) |
179 | { | |
180 | http->status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED; | |
181 | return (-1); | |
182 | } | |
b86bc4cf | 183 | |
7ec11630 MS |
184 | break; |
185 | } | |
186 | else | |
187 | #endif /* HAVE_GSSAPI */ | |
188 | if (_cups_strcasecmp(scheme, "Basic") && _cups_strcasecmp(scheme, "Digest")) | |
189 | continue; /* Not supported (yet) */ | |
b86bc4cf | 190 | |
7ec11630 MS |
191 | /* |
192 | * See if we should retry the current username:password... | |
193 | */ | |
5a9febac | 194 | |
7ec11630 MS |
195 | if ((http->digest_tries > 1 || !http->userpass[0]) && (!_cups_strcasecmp(scheme, "Basic") || (!_cups_strcasecmp(scheme, "Digest")))) |
196 | { | |
197 | /* | |
198 | * Nope - get a new password from the user... | |
199 | */ | |
ef416fc2 | 200 | |
7ec11630 MS |
201 | char default_username[HTTP_MAX_VALUE]; |
202 | /* Default username */ | |
ef416fc2 | 203 | |
7ec11630 | 204 | cg = _cupsGlobals(); |
ef416fc2 | 205 | |
7ec11630 MS |
206 | if (!cg->lang_default) |
207 | cg->lang_default = cupsLangDefault(); | |
ef416fc2 | 208 | |
44cb0dd2 | 209 | if (cups_auth_param(schemedata, "username", default_username, sizeof(default_username))) |
7ec11630 | 210 | cupsSetUser(default_username); |
5a6b583a | 211 | |
7ec11630 | 212 | snprintf(prompt, sizeof(prompt), _cupsLangString(cg->lang_default, _("Password for %s on %s? ")), cupsUser(), http->hostname[0] == '/' ? "localhost" : http->hostname); |
5a6b583a | 213 | |
7ec11630 MS |
214 | http->digest_tries = _cups_strncasecmp(scheme, "Digest", 6) != 0; |
215 | http->userpass[0] = '\0'; | |
ef416fc2 | 216 | |
7ec11630 MS |
217 | if ((password = cupsGetPassword2(prompt, http, method, resource)) == NULL) |
218 | { | |
219 | http->status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED; | |
220 | return (-1); | |
221 | } | |
f7deaa1a | 222 | |
7ec11630 MS |
223 | snprintf(http->userpass, sizeof(http->userpass), "%s:%s", cupsUser(), password); |
224 | } | |
225 | else if (http->status == HTTP_STATUS_UNAUTHORIZED) | |
226 | http->digest_tries ++; | |
227 | ||
228 | if (http->status == HTTP_STATUS_UNAUTHORIZED && http->digest_tries >= 3) | |
f7deaa1a | 229 | { |
7ec11630 MS |
230 | DEBUG_printf(("1cupsDoAuthentication: Too many authentication tries (%d)", http->digest_tries)); |
231 | ||
cb7f98ee | 232 | http->status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED; |
f7deaa1a | 233 | return (-1); |
234 | } | |
7ec11630 | 235 | |
ef416fc2 | 236 | /* |
7ec11630 | 237 | * Got a password; encode it for the server... |
ef416fc2 | 238 | */ |
239 | ||
7ec11630 MS |
240 | if (!_cups_strcasecmp(scheme, "Basic")) |
241 | { | |
242 | /* | |
243 | * Basic authentication... | |
244 | */ | |
5a738aea | 245 | |
7ec11630 | 246 | char encode[256]; /* Base64 buffer */ |
5a738aea | 247 | |
7ec11630 MS |
248 | httpEncode64_2(encode, sizeof(encode), http->userpass, (int)strlen(http->userpass)); |
249 | httpSetAuthString(http, "Basic", encode); | |
16f67389 | 250 | break; |
7ec11630 MS |
251 | } |
252 | else if (!_cups_strcasecmp(scheme, "Digest")) | |
253 | { | |
254 | /* | |
255 | * Digest authentication... | |
256 | */ | |
257 | ||
16f67389 MS |
258 | char nonce[HTTP_MAX_VALUE]; /* nonce="xyz" string */ |
259 | ||
260 | cups_auth_param(schemedata, "algorithm", http->algorithm, sizeof(http->algorithm)); | |
261 | cups_auth_param(schemedata, "opaque", http->opaque, sizeof(http->opaque)); | |
262 | cups_auth_param(schemedata, "nonce", nonce, sizeof(nonce)); | |
263 | cups_auth_param(schemedata, "realm", http->realm, sizeof(http->realm)); | |
7ec11630 | 264 | |
5737d5eb | 265 | if (_httpSetDigestAuthString(http, nonce, method, resource)) |
16f67389 | 266 | break; |
7ec11630 MS |
267 | } |
268 | } | |
269 | ||
270 | if (http->authstring) | |
271 | { | |
272 | DEBUG_printf(("1cupsDoAuthentication: authstring=\"%s\"", http->authstring)); | |
273 | ||
274 | return (0); | |
ef416fc2 | 275 | } |
f14324a7 MS |
276 | else |
277 | { | |
7ec11630 | 278 | DEBUG_printf(("1cupsDoAuthentication: Unknown auth type: \"%s\"", www_auth)); |
cb7f98ee | 279 | http->status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED; |
7ec11630 | 280 | |
f14324a7 MS |
281 | return (-1); |
282 | } | |
ef416fc2 | 283 | } |
284 | ||
285 | ||
f7deaa1a | 286 | #ifdef HAVE_GSSAPI |
f14324a7 MS |
287 | /* |
288 | * '_cupsSetNegotiateAuthString()' - Set the Kerberos authentication string. | |
289 | */ | |
290 | ||
291 | int /* O - 0 on success, -1 on error */ | |
292 | _cupsSetNegotiateAuthString( | |
eac3a0a0 MS |
293 | http_t *http, /* I - Connection to server */ |
294 | const char *method, /* I - Request method ("GET", "POST", "PUT") */ | |
295 | const char *resource) /* I - Resource path */ | |
f14324a7 MS |
296 | { |
297 | OM_uint32 minor_status, /* Minor status code */ | |
298 | major_status; /* Major status code */ | |
299 | gss_buffer_desc output_token = GSS_C_EMPTY_BUFFER; | |
07ed0e9a | 300 | /* Output token */ |
f14324a7 MS |
301 | |
302 | ||
321d8d57 MS |
303 | (void)method; |
304 | (void)resource; | |
305 | ||
f14324a7 MS |
306 | # ifdef __APPLE__ |
307 | /* | |
308 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
309 | * to use it... | |
310 | */ | |
311 | ||
6d8021f4 | 312 | if (&gss_init_sec_context == NULL) |
f14324a7 MS |
313 | { |
314 | DEBUG_puts("1_cupsSetNegotiateAuthString: Weak-linked GSSAPI/Kerberos " | |
315 | "framework is not present"); | |
316 | return (-1); | |
317 | } | |
318 | # endif /* __APPLE__ */ | |
319 | ||
320 | if (http->gssname == GSS_C_NO_NAME) | |
321 | { | |
eac3a0a0 | 322 | http->gssname = cups_gss_getname(http, _cupsGSSServiceName()); |
f14324a7 MS |
323 | } |
324 | ||
325 | if (http->gssctx != GSS_C_NO_CONTEXT) | |
326 | { | |
327 | gss_delete_sec_context(&minor_status, &http->gssctx, GSS_C_NO_BUFFER); | |
328 | http->gssctx = GSS_C_NO_CONTEXT; | |
329 | } | |
330 | ||
eac3a0a0 MS |
331 | major_status = gss_init_sec_context(&minor_status, GSS_C_NO_CREDENTIAL, |
332 | &http->gssctx, | |
333 | http->gssname, http->gssmech, | |
334 | GSS_C_MUTUAL_FLAG | GSS_C_INTEG_FLAG, | |
335 | GSS_C_INDEFINITE, | |
336 | GSS_C_NO_CHANNEL_BINDINGS, | |
337 | GSS_C_NO_BUFFER, &http->gssmech, | |
338 | &output_token, NULL, NULL); | |
339 | ||
accedcf8 | 340 | # ifdef HAVE_GSS_ACQUIRE_CRED_EX_F |
eac3a0a0 MS |
341 | if (major_status == GSS_S_NO_CRED) |
342 | { | |
343 | /* | |
344 | * Ask the user for credentials... | |
345 | */ | |
346 | ||
347 | char prompt[1024], /* Prompt for user */ | |
348 | userbuf[256]; /* Kerberos username */ | |
349 | const char *username, /* Username string */ | |
350 | *password; /* Password string */ | |
351 | _cups_gss_acquire_t data; /* Callback data */ | |
49c59293 | 352 | gss_auth_identity_desc identity; /* Kerberos user identity */ |
eac3a0a0 MS |
353 | _cups_globals_t *cg = _cupsGlobals(); |
354 | /* Per-thread global data */ | |
355 | ||
356 | if (!cg->lang_default) | |
357 | cg->lang_default = cupsLangDefault(); | |
358 | ||
359 | snprintf(prompt, sizeof(prompt), | |
360 | _cupsLangString(cg->lang_default, _("Password for %s on %s? ")), | |
f228370c | 361 | cupsUser(), http->gsshost); |
eac3a0a0 MS |
362 | |
363 | if ((password = cupsGetPassword2(prompt, http, method, resource)) == NULL) | |
364 | return (-1); | |
365 | ||
366 | /* | |
367 | * Try to acquire credentials... | |
368 | */ | |
369 | ||
370 | username = cupsUser(); | |
371 | if (!strchr(username, '@')) | |
372 | { | |
f228370c | 373 | snprintf(userbuf, sizeof(userbuf), "%s@%s", username, http->gsshost); |
eac3a0a0 MS |
374 | username = userbuf; |
375 | } | |
376 | ||
377 | identity.type = GSS_AUTH_IDENTITY_TYPE_1; | |
378 | identity.flags = 0; | |
379 | identity.username = (char *)username; | |
380 | identity.realm = (char *)""; | |
381 | identity.password = (char *)password; | |
382 | identity.credentialsRef = NULL; | |
383 | ||
384 | data.sem = dispatch_semaphore_create(0); | |
385 | data.major = 0; | |
386 | data.creds = NULL; | |
387 | ||
388 | if (data.sem) | |
389 | { | |
5dcbe84d | 390 | 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 |
391 | |
392 | if (major_status == GSS_S_COMPLETE) | |
393 | { | |
394 | dispatch_semaphore_wait(data.sem, DISPATCH_TIME_FOREVER); | |
395 | major_status = data.major; | |
396 | } | |
397 | ||
398 | dispatch_release(data.sem); | |
399 | ||
400 | if (major_status == GSS_S_COMPLETE) | |
401 | { | |
402 | OM_uint32 release_minor; /* Minor status from releasing creds */ | |
403 | ||
404 | major_status = gss_init_sec_context(&minor_status, data.creds, | |
405 | &http->gssctx, | |
406 | http->gssname, http->gssmech, | |
407 | GSS_C_MUTUAL_FLAG | GSS_C_INTEG_FLAG, | |
408 | GSS_C_INDEFINITE, | |
409 | GSS_C_NO_CHANNEL_BINDINGS, | |
410 | GSS_C_NO_BUFFER, &http->gssmech, | |
411 | &output_token, NULL, NULL); | |
412 | gss_release_cred(&release_minor, &data.creds); | |
413 | } | |
414 | } | |
415 | } | |
accedcf8 | 416 | # endif /* HAVE_GSS_ACQUIRED_CRED_EX_F */ |
f14324a7 MS |
417 | |
418 | if (GSS_ERROR(major_status)) | |
419 | { | |
420 | cups_gss_printf(major_status, minor_status, | |
421 | "_cupsSetNegotiateAuthString: Unable to initialize " | |
422 | "security context"); | |
423 | return (-1); | |
424 | } | |
425 | ||
accedcf8 | 426 | # ifdef DEBUG |
eac3a0a0 | 427 | else if (major_status == GSS_S_CONTINUE_NEEDED) |
f14324a7 MS |
428 | cups_gss_printf(major_status, minor_status, |
429 | "_cupsSetNegotiateAuthString: Continuation needed!"); | |
accedcf8 | 430 | # endif /* DEBUG */ |
f14324a7 MS |
431 | |
432 | if (output_token.length > 0 && output_token.length <= 65536) | |
433 | { | |
434 | /* | |
435 | * Allocate the authorization string since Windows KDCs can have | |
436 | * arbitrarily large credentials... | |
437 | */ | |
438 | ||
7e86f2f6 | 439 | int authsize = 10 + /* "Negotiate " */ |
cee8cdad | 440 | (((int)output_token.length * 4 / 3 + 3) & ~3) + 1; |
7e86f2f6 | 441 | /* Base64 + nul */ |
f14324a7 MS |
442 | |
443 | httpSetAuthString(http, NULL, NULL); | |
444 | ||
7e86f2f6 | 445 | if ((http->authstring = malloc((size_t)authsize)) == NULL) |
f14324a7 MS |
446 | { |
447 | http->authstring = http->_authstring; | |
448 | authsize = sizeof(http->_authstring); | |
449 | } | |
450 | ||
07623986 | 451 | strlcpy(http->authstring, "Negotiate ", (size_t)authsize); |
f14324a7 | 452 | httpEncode64_2(http->authstring + 10, authsize - 10, output_token.value, |
7e86f2f6 | 453 | (int)output_token.length); |
f14324a7 MS |
454 | |
455 | gss_release_buffer(&minor_status, &output_token); | |
456 | } | |
457 | else | |
458 | { | |
459 | DEBUG_printf(("1_cupsSetNegotiateAuthString: Kerberos credentials too " | |
460 | "large - %d bytes!", (int)output_token.length)); | |
461 | gss_release_buffer(&minor_status, &output_token); | |
462 | ||
463 | return (-1); | |
464 | } | |
465 | ||
466 | return (0); | |
467 | } | |
accedcf8 | 468 | #endif /* HAVE_GSSAPI */ |
f14324a7 MS |
469 | |
470 | ||
7ec11630 MS |
471 | /* |
472 | * 'cups_auth_find()' - Find the named WWW-Authenticate scheme. | |
473 | * | |
474 | * The "www_authenticate" parameter points to the current position in the header. | |
475 | * | |
476 | * Returns @code NULL@ if the auth scheme is not present. | |
477 | */ | |
478 | ||
479 | static const char * /* O - Start of matching scheme or @code NULL@ if not found */ | |
480 | cups_auth_find(const char *www_authenticate, /* I - Pointer into WWW-Authenticate header */ | |
481 | const char *scheme) /* I - Authentication scheme */ | |
482 | { | |
483 | size_t schemelen = strlen(scheme); /* Length of scheme */ | |
484 | ||
485 | ||
91bc88eb MS |
486 | DEBUG_printf(("8cups_auth_find(www_authenticate=\"%s\", scheme=\"%s\"(%d))", www_authenticate, scheme, (int)schemelen)); |
487 | ||
7ec11630 MS |
488 | while (*www_authenticate) |
489 | { | |
490 | /* | |
491 | * Skip leading whitespace and commas... | |
492 | */ | |
493 | ||
91bc88eb | 494 | DEBUG_printf(("9cups_auth_find: Before whitespace: \"%s\"", www_authenticate)); |
7ec11630 MS |
495 | while (isspace(*www_authenticate & 255) || *www_authenticate == ',') |
496 | www_authenticate ++; | |
91bc88eb | 497 | DEBUG_printf(("9cups_auth_find: After whitespace: \"%s\"", www_authenticate)); |
7ec11630 MS |
498 | |
499 | /* | |
500 | * See if this is "Scheme" followed by whitespace or the end of the string. | |
501 | */ | |
502 | ||
c944b62b | 503 | if (!strncmp(www_authenticate, scheme, schemelen) && (isspace(www_authenticate[schemelen] & 255) || www_authenticate[schemelen] == ',' || !www_authenticate[schemelen])) |
7ec11630 MS |
504 | { |
505 | /* | |
506 | * Yes, this is the start of the scheme-specific information... | |
507 | */ | |
508 | ||
91bc88eb MS |
509 | DEBUG_printf(("9cups_auth_find: Returning \"%s\".", www_authenticate)); |
510 | ||
7ec11630 MS |
511 | return (www_authenticate); |
512 | } | |
513 | ||
514 | /* | |
515 | * Skip the scheme name or param="value" string... | |
516 | */ | |
517 | ||
518 | while (!isspace(*www_authenticate & 255) && *www_authenticate) | |
519 | { | |
520 | if (*www_authenticate == '\"') | |
521 | { | |
522 | /* | |
523 | * Skip quoted value... | |
524 | */ | |
525 | ||
91bc88eb MS |
526 | www_authenticate ++; |
527 | while (*www_authenticate && *www_authenticate != '\"') | |
7ec11630 | 528 | www_authenticate ++; |
91bc88eb MS |
529 | |
530 | DEBUG_printf(("9cups_auth_find: After quoted: \"%s\"", www_authenticate)); | |
7ec11630 MS |
531 | } |
532 | ||
533 | www_authenticate ++; | |
534 | } | |
91bc88eb MS |
535 | |
536 | DEBUG_printf(("9cups_auth_find: After skip: \"%s\"", www_authenticate)); | |
7ec11630 MS |
537 | } |
538 | ||
91bc88eb MS |
539 | DEBUG_puts("9cups_auth_find: Returning NULL."); |
540 | ||
7ec11630 MS |
541 | return (NULL); |
542 | } | |
543 | ||
544 | ||
545 | /* | |
546 | * 'cups_auth_param()' - Copy the value for the named authentication parameter, | |
547 | * if present. | |
548 | */ | |
549 | ||
550 | static const char * /* O - Parameter value or @code NULL@ if not present */ | |
551 | cups_auth_param(const char *scheme, /* I - Pointer to auth data */ | |
552 | const char *name, /* I - Name of parameter */ | |
553 | char *value, /* I - Value buffer */ | |
554 | size_t valsize) /* I - Size of value buffer */ | |
555 | { | |
556 | char *valptr = value, /* Pointer into value buffer */ | |
557 | *valend = value + valsize - 1; /* Pointer to end of buffer */ | |
558 | size_t namelen = strlen(name); /* Name length */ | |
559 | int param; /* Is this a parameter? */ | |
560 | ||
561 | ||
91bc88eb MS |
562 | DEBUG_printf(("8cups_auth_param(scheme=\"%s\", name=\"%s\", value=%p, valsize=%d)", scheme, name, (void *)value, (int)valsize)); |
563 | ||
7ec11630 MS |
564 | while (!isspace(*scheme & 255) && *scheme) |
565 | scheme ++; | |
566 | ||
567 | while (*scheme) | |
568 | { | |
569 | while (isspace(*scheme & 255) || *scheme == ',') | |
570 | scheme ++; | |
571 | ||
572 | if (!strncmp(scheme, name, namelen) && scheme[namelen] == '=') | |
573 | { | |
574 | /* | |
575 | * Found the parameter, copy the value... | |
576 | */ | |
577 | ||
578 | scheme += namelen + 1; | |
579 | if (*scheme == '\"') | |
580 | { | |
581 | scheme ++; | |
582 | ||
583 | while (*scheme && *scheme != '\"') | |
584 | { | |
585 | if (valptr < valend) | |
586 | *valptr++ = *scheme; | |
587 | ||
588 | scheme ++; | |
589 | } | |
590 | } | |
591 | else | |
592 | { | |
593 | while (*scheme && strchr("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~+/=", *scheme)) | |
594 | { | |
595 | if (valptr < valend) | |
596 | *valptr++ = *scheme; | |
597 | ||
598 | scheme ++; | |
599 | } | |
600 | } | |
601 | ||
602 | *valptr = '\0'; | |
603 | ||
91bc88eb MS |
604 | DEBUG_printf(("9cups_auth_param: Returning \"%s\".", value)); |
605 | ||
7ec11630 MS |
606 | return (value); |
607 | } | |
608 | ||
609 | /* | |
610 | * Skip the param=value string... | |
611 | */ | |
612 | ||
613 | param = 0; | |
614 | ||
615 | while (!isspace(*scheme & 255) && *scheme) | |
616 | { | |
617 | if (*scheme == '=') | |
618 | param = 1; | |
619 | else if (*scheme == '\"') | |
620 | { | |
621 | /* | |
622 | * Skip quoted value... | |
623 | */ | |
624 | ||
91bc88eb MS |
625 | scheme ++; |
626 | while (*scheme && *scheme != '\"') | |
7ec11630 MS |
627 | scheme ++; |
628 | } | |
629 | ||
630 | scheme ++; | |
631 | } | |
632 | ||
633 | /* | |
634 | * If this wasn't a parameter, we are at the end of this scheme's | |
635 | * parameters... | |
636 | */ | |
637 | ||
638 | if (!param) | |
639 | break; | |
640 | } | |
641 | ||
642 | *value = '\0'; | |
643 | ||
91bc88eb MS |
644 | DEBUG_puts("9cups_auth_param: Returning NULL."); |
645 | ||
7ec11630 MS |
646 | return (NULL); |
647 | } | |
648 | ||
649 | ||
650 | /* | |
651 | * 'cups_auth_scheme()' - Get the (next) WWW-Authenticate scheme. | |
652 | * | |
653 | * The "www_authenticate" parameter points to the current position in the header. | |
654 | * | |
655 | * Returns @code NULL@ if there are no (more) auth schemes present. | |
656 | */ | |
657 | ||
658 | static const char * /* O - Start of scheme or @code NULL@ if not found */ | |
659 | cups_auth_scheme(const char *www_authenticate, /* I - Pointer into WWW-Authenticate header */ | |
660 | char *scheme, /* I - Scheme name buffer */ | |
661 | size_t schemesize) /* I - Size of buffer */ | |
662 | { | |
663 | const char *start; /* Start of scheme data */ | |
664 | char *sptr = scheme, /* Pointer into scheme buffer */ | |
665 | *send = scheme + schemesize - 1;/* End of scheme buffer */ | |
666 | int param; /* Is this a parameter? */ | |
667 | ||
668 | ||
91bc88eb MS |
669 | DEBUG_printf(("8cups_auth_scheme(www_authenticate=\"%s\", scheme=%p, schemesize=%d)", www_authenticate, (void *)scheme, (int)schemesize)); |
670 | ||
7ec11630 MS |
671 | while (*www_authenticate) |
672 | { | |
673 | /* | |
674 | * Skip leading whitespace and commas... | |
675 | */ | |
676 | ||
677 | while (isspace(*www_authenticate & 255) || *www_authenticate == ',') | |
678 | www_authenticate ++; | |
679 | ||
680 | /* | |
681 | * Parse the scheme name or param="value" string... | |
682 | */ | |
683 | ||
44cb0dd2 | 684 | for (sptr = scheme, start = www_authenticate, param = 0; *www_authenticate && *www_authenticate != ',' && !isspace(*www_authenticate & 255); www_authenticate ++) |
7ec11630 MS |
685 | { |
686 | if (*www_authenticate == '=') | |
687 | param = 1; | |
688 | else if (!param && sptr < send) | |
689 | *sptr++ = *www_authenticate; | |
690 | else if (*www_authenticate == '\"') | |
691 | { | |
692 | /* | |
693 | * Skip quoted value... | |
694 | */ | |
695 | ||
91bc88eb MS |
696 | www_authenticate ++; |
697 | while (*www_authenticate && *www_authenticate != '\"') | |
7ec11630 MS |
698 | www_authenticate ++; |
699 | } | |
700 | } | |
701 | ||
702 | if (sptr > scheme && !param) | |
703 | { | |
704 | *sptr = '\0'; | |
91bc88eb MS |
705 | |
706 | DEBUG_printf(("9cups_auth_scheme: Returning \"%s\".", start)); | |
707 | ||
7ec11630 MS |
708 | return (start); |
709 | } | |
710 | } | |
711 | ||
712 | *scheme = '\0'; | |
713 | ||
91bc88eb MS |
714 | DEBUG_puts("9cups_auth_scheme: Returning NULL."); |
715 | ||
7ec11630 MS |
716 | return (NULL); |
717 | } | |
718 | ||
719 | ||
accedcf8 | 720 | #ifdef HAVE_GSSAPI |
eac3a0a0 | 721 | # ifdef HAVE_GSS_ACQUIRE_CRED_EX_F |
f7deaa1a | 722 | /* |
eac3a0a0 MS |
723 | * 'cups_gss_acquire()' - Kerberos credentials callback. |
724 | */ | |
725 | static void | |
726 | cups_gss_acquire( | |
727 | void *ctx, /* I - Caller context */ | |
728 | OM_uint32 major, /* I - Major error code */ | |
729 | gss_status_id_t status, /* I - Status (unused) */ | |
730 | gss_cred_id_t creds, /* I - Credentials (if any) */ | |
731 | gss_OID_set oids, /* I - Mechanism OIDs (unused) */ | |
732 | OM_uint32 time_rec) /* I - Timestamp (unused) */ | |
733 | { | |
734 | uint32_t min; /* Minor error code */ | |
735 | _cups_gss_acquire_t *data; /* Callback data */ | |
736 | ||
737 | ||
738 | (void)status; | |
739 | (void)time_rec; | |
740 | ||
741 | data = (_cups_gss_acquire_t *)ctx; | |
742 | data->major = major; | |
743 | data->creds = creds; | |
744 | ||
745 | gss_release_oid_set(&min, &oids); | |
746 | dispatch_semaphore_signal(data->sem); | |
747 | } | |
748 | # endif /* HAVE_GSS_ACQUIRE_CRED_EX_F */ | |
749 | ||
750 | ||
751 | /* | |
752 | * 'cups_gss_getname()' - Get CUPS service credentials for authentication. | |
f7deaa1a | 753 | */ |
754 | ||
755 | static gss_name_t /* O - Server name */ | |
eac3a0a0 | 756 | cups_gss_getname( |
f7deaa1a | 757 | http_t *http, /* I - Connection to server */ |
758 | const char *service_name) /* I - Service name */ | |
759 | { | |
760 | gss_buffer_desc token = GSS_C_EMPTY_BUFFER; | |
761 | /* Service token */ | |
bc44d920 | 762 | OM_uint32 major_status, /* Major status code */ |
763 | minor_status; /* Minor status code */ | |
764 | gss_name_t server_name; /* Server name */ | |
eac3a0a0 | 765 | char buf[1024]; /* Name buffer */ |
bc44d920 | 766 | |
767 | ||
eac3a0a0 | 768 | DEBUG_printf(("7cups_gss_getname(http=%p, service_name=\"%s\")", http, |
e07d4801 MS |
769 | service_name)); |
770 | ||
771 | ||
bc44d920 | 772 | /* |
773 | * Get the hostname... | |
774 | */ | |
f7deaa1a | 775 | |
eac3a0a0 MS |
776 | if (!http->gsshost[0]) |
777 | { | |
778 | httpGetHostname(http, http->gsshost, sizeof(http->gsshost)); | |
bc44d920 | 779 | |
eac3a0a0 MS |
780 | if (!strcmp(http->gsshost, "localhost")) |
781 | { | |
782 | if (gethostname(http->gsshost, sizeof(http->gsshost)) < 0) | |
783 | { | |
784 | DEBUG_printf(("1cups_gss_getname: gethostname() failed: %s", | |
785 | strerror(errno))); | |
786 | http->gsshost[0] = '\0'; | |
787 | return (NULL); | |
788 | } | |
789 | ||
790 | if (!strchr(http->gsshost, '.')) | |
791 | { | |
792 | /* | |
793 | * The hostname is not a FQDN, so look it up... | |
794 | */ | |
795 | ||
796 | struct hostent *host; /* Host entry to get FQDN */ | |
797 | ||
798 | if ((host = gethostbyname(http->gsshost)) != NULL && host->h_name) | |
799 | { | |
800 | /* | |
801 | * Use the resolved hostname... | |
802 | */ | |
803 | ||
804 | strlcpy(http->gsshost, host->h_name, sizeof(http->gsshost)); | |
805 | } | |
806 | else | |
807 | { | |
808 | DEBUG_printf(("1cups_gss_getname: gethostbyname(\"%s\") failed.", | |
809 | http->gsshost)); | |
810 | http->gsshost[0] = '\0'; | |
811 | return (NULL); | |
812 | } | |
813 | } | |
814 | } | |
815 | } | |
f7deaa1a | 816 | |
817 | /* | |
eac3a0a0 | 818 | * Get a service name we can use for authentication purposes... |
f7deaa1a | 819 | */ |
820 | ||
eac3a0a0 | 821 | snprintf(buf, sizeof(buf), "%s@%s", service_name, http->gsshost); |
f7deaa1a | 822 | |
eac3a0a0 | 823 | DEBUG_printf(("8cups_gss_getname: Looking up \"%s\".", buf)); |
7ff4fea9 | 824 | |
f7deaa1a | 825 | token.value = buf; |
826 | token.length = strlen(buf); | |
827 | server_name = GSS_C_NO_NAME; | |
828 | major_status = gss_import_name(&minor_status, &token, | |
829 | GSS_C_NT_HOSTBASED_SERVICE, | |
830 | &server_name); | |
831 | ||
832 | if (GSS_ERROR(major_status)) | |
833 | { | |
e07d4801 | 834 | cups_gss_printf(major_status, minor_status, |
eac3a0a0 | 835 | "cups_gss_getname: gss_import_name() failed"); |
f7deaa1a | 836 | return (NULL); |
837 | } | |
838 | ||
839 | return (server_name); | |
840 | } | |
e07d4801 MS |
841 | |
842 | ||
843 | # ifdef DEBUG | |
844 | /* | |
eac3a0a0 | 845 | * 'cups_gss_printf()' - Show debug error messages from GSSAPI. |
e07d4801 MS |
846 | */ |
847 | ||
848 | static void | |
849 | cups_gss_printf(OM_uint32 major_status,/* I - Major status code */ | |
850 | OM_uint32 minor_status,/* I - Minor status code */ | |
851 | const char *message) /* I - Prefix for error message */ | |
852 | { | |
853 | OM_uint32 err_major_status, /* Major status code for display */ | |
854 | err_minor_status; /* Minor status code for display */ | |
855 | OM_uint32 msg_ctx; /* Message context */ | |
856 | gss_buffer_desc major_status_string = GSS_C_EMPTY_BUFFER, | |
857 | /* Major status message */ | |
858 | minor_status_string = GSS_C_EMPTY_BUFFER; | |
859 | /* Minor status message */ | |
860 | ||
861 | ||
862 | msg_ctx = 0; | |
863 | err_major_status = gss_display_status(&err_minor_status, | |
864 | major_status, | |
865 | GSS_C_GSS_CODE, | |
866 | GSS_C_NO_OID, | |
867 | &msg_ctx, | |
868 | &major_status_string); | |
869 | ||
870 | if (!GSS_ERROR(err_major_status)) | |
871 | gss_display_status(&err_minor_status, minor_status, GSS_C_MECH_CODE, | |
872 | GSS_C_NULL_OID, &msg_ctx, &minor_status_string); | |
873 | ||
68b10830 | 874 | DEBUG_printf(("1%s: %s, %s", message, (char *)major_status_string.value, |
e07d4801 MS |
875 | (char *)minor_status_string.value)); |
876 | ||
877 | gss_release_buffer(&err_minor_status, &major_status_string); | |
878 | gss_release_buffer(&err_minor_status, &minor_status_string); | |
879 | } | |
880 | # endif /* DEBUG */ | |
f7deaa1a | 881 | #endif /* HAVE_GSSAPI */ |
882 | ||
883 | ||
ef416fc2 | 884 | /* |
885 | * 'cups_local_auth()' - Get the local authorization certificate if | |
eac3a0a0 | 886 | * available/applicable. |
ef416fc2 | 887 | */ |
888 | ||
f7deaa1a | 889 | static int /* O - 0 if available */ |
bc44d920 | 890 | /* 1 if not available */ |
f7deaa1a | 891 | /* -1 error */ |
ef416fc2 | 892 | cups_local_auth(http_t *http) /* I - HTTP connection to server */ |
893 | { | |
19dc16f7 | 894 | #if defined(_WIN32) || defined(__EMX__) |
ef416fc2 | 895 | /* |
19dc16f7 | 896 | * Currently _WIN32 and OS-2 do not support the CUPS server... |
ef416fc2 | 897 | */ |
898 | ||
bc44d920 | 899 | return (1); |
ef416fc2 | 900 | #else |
f7deaa1a | 901 | int pid; /* Current process ID */ |
902 | FILE *fp; /* Certificate file */ | |
e07d4801 | 903 | char trc[16], /* Try Root Certificate parameter */ |
6961465f | 904 | filename[1024]; /* Certificate filename */ |
7ec11630 MS |
905 | const char *www_auth, /* WWW-Authenticate header */ |
906 | *schemedata; /* Data for the named auth scheme */ | |
ef416fc2 | 907 | _cups_globals_t *cg = _cupsGlobals(); /* Global data */ |
bc44d920 | 908 | # if defined(HAVE_AUTHORIZATION_H) |
f7deaa1a | 909 | OSStatus status; /* Status */ |
910 | AuthorizationItem auth_right; /* Authorization right */ | |
911 | AuthorizationRights auth_rights; /* Authorization rights */ | |
912 | AuthorizationFlags auth_flags; /* Authorization flags */ | |
913 | AuthorizationExternalForm auth_extrn; /* Authorization ref external */ | |
914 | char auth_key[1024]; /* Buffer */ | |
915 | char buffer[1024]; /* Buffer */ | |
bc44d920 | 916 | # endif /* HAVE_AUTHORIZATION_H */ |
ef416fc2 | 917 | |
918 | ||
807315e6 | 919 | DEBUG_printf(("7cups_local_auth(http=%p) hostaddr=%s, hostname=\"%s\"", (void *)http, httpAddrString(http->hostaddr, filename, sizeof(filename)), http->hostname)); |
ef416fc2 | 920 | |
921 | /* | |
922 | * See if we are accessing localhost... | |
923 | */ | |
924 | ||
7ec11630 | 925 | if (!httpAddrLocalhost(http->hostaddr) && _cups_strcasecmp(http->hostname, "localhost") != 0) |
ef416fc2 | 926 | { |
e07d4801 | 927 | DEBUG_puts("8cups_local_auth: Not a local connection!"); |
bc44d920 | 928 | return (1); |
ef416fc2 | 929 | } |
930 | ||
accedcf8 MS |
931 | www_auth = httpGetField(http, HTTP_FIELD_WWW_AUTHENTICATE); |
932 | ||
bc44d920 | 933 | # if defined(HAVE_AUTHORIZATION_H) |
f7deaa1a | 934 | /* |
935 | * Delete any previous authorization reference... | |
936 | */ | |
f14324a7 | 937 | |
b94498cf | 938 | if (http->auth_ref) |
f7deaa1a | 939 | { |
b94498cf | 940 | AuthorizationFree(http->auth_ref, kAuthorizationFlagDefaults); |
941 | http->auth_ref = NULL; | |
f7deaa1a | 942 | } |
943 | ||
91bc88eb | 944 | if (!getenv("GATEWAY_INTERFACE") && (schemedata = cups_auth_find(www_auth, "AuthRef")) != NULL && cups_auth_param(schemedata, "key", auth_key, sizeof(auth_key))) |
f7deaa1a | 945 | { |
7ec11630 | 946 | status = AuthorizationCreate(NULL, kAuthorizationEmptyEnvironment, kAuthorizationFlagDefaults, &http->auth_ref); |
f7deaa1a | 947 | if (status != errAuthorizationSuccess) |
948 | { | |
fa26ab95 MS |
949 | DEBUG_printf(("8cups_local_auth: AuthorizationCreate() returned %d", |
950 | (int)status)); | |
f7deaa1a | 951 | return (-1); |
952 | } | |
953 | ||
954 | auth_right.name = auth_key; | |
955 | auth_right.valueLength = 0; | |
956 | auth_right.value = NULL; | |
957 | auth_right.flags = 0; | |
958 | ||
959 | auth_rights.count = 1; | |
960 | auth_rights.items = &auth_right; | |
961 | ||
f14324a7 | 962 | auth_flags = kAuthorizationFlagDefaults | |
f7deaa1a | 963 | kAuthorizationFlagPreAuthorize | |
f14324a7 | 964 | kAuthorizationFlagInteractionAllowed | |
f7deaa1a | 965 | kAuthorizationFlagExtendRights; |
966 | ||
f14324a7 MS |
967 | status = AuthorizationCopyRights(http->auth_ref, &auth_rights, |
968 | kAuthorizationEmptyEnvironment, | |
f7deaa1a | 969 | auth_flags, NULL); |
970 | if (status == errAuthorizationSuccess) | |
b94498cf | 971 | status = AuthorizationMakeExternalForm(http->auth_ref, &auth_extrn); |
f7deaa1a | 972 | |
973 | if (status == errAuthorizationSuccess) | |
974 | { | |
975 | /* | |
976 | * Set the authorization string and return... | |
977 | */ | |
978 | ||
f14324a7 | 979 | httpEncode64_2(buffer, sizeof(buffer), (void *)&auth_extrn, |
f7deaa1a | 980 | sizeof(auth_extrn)); |
981 | ||
355e94dc | 982 | httpSetAuthString(http, "AuthRef", buffer); |
f7deaa1a | 983 | |
e07d4801 | 984 | DEBUG_printf(("8cups_local_auth: Returning authstring=\"%s\"", |
f7deaa1a | 985 | http->authstring)); |
986 | return (0); | |
987 | } | |
988 | else if (status == errAuthorizationCanceled) | |
989 | return (-1); | |
990 | ||
fa26ab95 | 991 | DEBUG_printf(("9cups_local_auth: AuthorizationCopyRights() returned %d", (int)status)); |
f7deaa1a | 992 | |
993 | /* | |
994 | * Fall through to try certificates... | |
995 | */ | |
996 | } | |
bc44d920 | 997 | # endif /* HAVE_AUTHORIZATION_H */ |
f7deaa1a | 998 | |
7ec11630 MS |
999 | # ifdef HAVE_GSSAPI |
1000 | if (cups_auth_find(www_auth, "Negotiate")) | |
1001 | return (1); | |
1002 | # endif /* HAVE_GSSAPI */ | |
7ec11630 | 1003 | |
f11a948a MS |
1004 | # if defined(SO_PEERCRED) && defined(AF_LOCAL) |
1005 | /* | |
1006 | * See if we can authenticate using the peer credentials provided over a | |
1007 | * domain socket; if so, specify "PeerCred username" as the authentication | |
1008 | * information... | |
1009 | */ | |
1010 | ||
7ec11630 MS |
1011 | if (http->hostaddr->addr.sa_family == AF_LOCAL && |
1012 | !getenv("GATEWAY_INTERFACE") && /* Not via CGI programs... */ | |
1013 | cups_auth_find(www_auth, "PeerCred")) | |
f11a948a MS |
1014 | { |
1015 | /* | |
1016 | * Verify that the current cupsUser() matches the current UID... | |
1017 | */ | |
1018 | ||
1019 | struct passwd *pwd; /* Password information */ | |
1020 | const char *username; /* Current username */ | |
1021 | ||
1022 | username = cupsUser(); | |
1023 | ||
1024 | if ((pwd = getpwnam(username)) != NULL && pwd->pw_uid == getuid()) | |
1025 | { | |
1026 | httpSetAuthString(http, "PeerCred", username); | |
1027 | ||
1028 | DEBUG_printf(("8cups_local_auth: Returning authstring=\"%s\"", | |
1029 | http->authstring)); | |
1030 | ||
1031 | return (0); | |
1032 | } | |
1033 | } | |
1034 | # endif /* SO_PEERCRED && AF_LOCAL */ | |
1035 | ||
7ec11630 MS |
1036 | if ((schemedata = cups_auth_find(www_auth, "Local")) == NULL) |
1037 | return (1); | |
1038 | ||
ef416fc2 | 1039 | /* |
1040 | * Try opening a certificate file for this PID. If that fails, | |
1041 | * try the root certificate... | |
1042 | */ | |
1043 | ||
1044 | pid = getpid(); | |
1045 | snprintf(filename, sizeof(filename), "%s/certs/%d", cg->cups_statedir, pid); | |
1046 | if ((fp = fopen(filename, "r")) == NULL && pid > 0) | |
1047 | { | |
bc44d920 | 1048 | /* |
e07d4801 | 1049 | * No certificate for this PID; see if we can get the root certificate... |
bc44d920 | 1050 | */ |
1051 | ||
bf265b3a | 1052 | DEBUG_printf(("9cups_local_auth: Unable to open file \"%s\": %s", filename, strerror(errno))); |
e07d4801 | 1053 | |
7ec11630 | 1054 | if (!cups_auth_param(schemedata, "trc", trc, sizeof(trc))) |
e07d4801 MS |
1055 | { |
1056 | /* | |
1057 | * Scheduler doesn't want us to use the root certificate... | |
1058 | */ | |
1059 | ||
1060 | return (1); | |
1061 | } | |
1062 | ||
ef416fc2 | 1063 | snprintf(filename, sizeof(filename), "%s/certs/0", cg->cups_statedir); |
bf265b3a MS |
1064 | if ((fp = fopen(filename, "r")) == NULL) |
1065 | DEBUG_printf(("9cups_local_auth: Unable to open file \"%s\": %s", filename, strerror(errno))); | |
ef416fc2 | 1066 | } |
1067 | ||
f7deaa1a | 1068 | if (fp) |
ef416fc2 | 1069 | { |
f7deaa1a | 1070 | /* |
1071 | * Read the certificate from the file... | |
1072 | */ | |
ef416fc2 | 1073 | |
6961465f MS |
1074 | char certificate[33], /* Certificate string */ |
1075 | *certptr; /* Pointer to certificate string */ | |
1076 | ||
1077 | certptr = fgets(certificate, sizeof(certificate), fp); | |
f7deaa1a | 1078 | fclose(fp); |
ef416fc2 | 1079 | |
6961465f MS |
1080 | if (certptr) |
1081 | { | |
1082 | /* | |
1083 | * Set the authorization string and return... | |
1084 | */ | |
ef416fc2 | 1085 | |
6961465f | 1086 | httpSetAuthString(http, "Local", certificate); |
ef416fc2 | 1087 | |
6961465f MS |
1088 | DEBUG_printf(("8cups_local_auth: Returning authstring=\"%s\"", |
1089 | http->authstring)); | |
ef416fc2 | 1090 | |
6961465f MS |
1091 | return (0); |
1092 | } | |
f7deaa1a | 1093 | } |
1094 | ||
1095 | return (1); | |
19dc16f7 | 1096 | #endif /* _WIN32 || __EMX__ */ |
ef416fc2 | 1097 | } |