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ef416fc2 | 1 | /* |
f7deaa1a | 2 | * "$Id: usersys.c 5901 2006-08-29 15:49:34Z mike $" |
ef416fc2 | 3 | * |
4 | * User, system, and password routines for the Common UNIX Printing | |
5 | * System (CUPS). | |
6 | * | |
7 | * Copyright 1997-2006 by Easy Software Products. | |
8 | * | |
9 | * These coded instructions, statements, and computer programs are the | |
10 | * property of Easy Software Products and are protected by Federal | |
11 | * copyright law. Distribution and use rights are outlined in the file | |
12 | * "LICENSE.txt" which should have been included with this file. If this | |
13 | * file is missing or damaged please contact Easy Software Products | |
14 | * at: | |
15 | * | |
16 | * Attn: CUPS Licensing Information | |
17 | * Easy Software Products | |
18 | * 44141 Airport View Drive, Suite 204 | |
19 | * Hollywood, Maryland 20636 USA | |
20 | * | |
21 | * Voice: (301) 373-9600 | |
22 | * EMail: cups-info@cups.org | |
23 | * WWW: http://www.cups.org | |
24 | * | |
25 | * This file is subject to the Apple OS-Developed Software exception. | |
26 | * | |
27 | * Contents: | |
28 | * | |
b423cd4c | 29 | * cupsEncryption() - Get the default encryption settings. |
30 | * cupsGetPassword() - Get a password from the user. | |
31 | * cupsServer() - Return the hostname of the default server. | |
32 | * cupsSetEncryption() - Set the encryption preference. | |
33 | * cupsSetPasswordCB() - Set the password callback for CUPS. | |
34 | * cupsSetServer() - Set the default server name. | |
35 | * cupsSetUser() - Set the default user name. | |
36 | * cupsUser() - Return the current users name. | |
37 | * _cupsGetPassword() - Get a password from the user. | |
38 | * cups_open_client_conf() - Open the client.conf file. | |
ef416fc2 | 39 | */ |
40 | ||
41 | /* | |
42 | * Include necessary headers... | |
43 | */ | |
44 | ||
45 | #include "http-private.h" | |
46 | #include "globals.h" | |
47 | #include <stdlib.h> | |
e00b005a | 48 | #include <sys/stat.h> |
ef416fc2 | 49 | #ifdef WIN32 |
50 | # include <windows.h> | |
51 | #endif /* WIN32 */ | |
d09495fa | 52 | #include "debug.h" |
ef416fc2 | 53 | |
54 | ||
b423cd4c | 55 | /* |
56 | * Local functions... | |
57 | */ | |
58 | ||
59 | static cups_file_t *cups_open_client_conf(void); | |
60 | ||
61 | ||
ef416fc2 | 62 | /* |
63 | * 'cupsEncryption()' - Get the default encryption settings. | |
64 | * | |
65 | * The default encryption setting comes from the CUPS_ENCRYPTION | |
66 | * environment variable, then the ~/.cupsrc file, and finally the | |
67 | * /etc/cups/client.conf file. If not set, the default is | |
68 | * HTTP_ENCRYPT_IF_REQUESTED. | |
69 | */ | |
70 | ||
71 | http_encryption_t /* O - Encryption settings */ | |
72 | cupsEncryption(void) | |
73 | { | |
74 | cups_file_t *fp; /* client.conf file */ | |
75 | char *encryption; /* CUPS_ENCRYPTION variable */ | |
ef416fc2 | 76 | char line[1024], /* Line from file */ |
77 | *value; /* Value on line */ | |
78 | int linenum; /* Line number */ | |
79 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
80 | ||
81 | ||
82 | /* | |
83 | * First see if we have already set the encryption stuff... | |
84 | */ | |
85 | ||
86 | if (cg->encryption == (http_encryption_t)-1) | |
87 | { | |
88 | /* | |
89 | * Then see if the CUPS_ENCRYPTION environment variable is set... | |
90 | */ | |
91 | ||
92 | if ((encryption = getenv("CUPS_ENCRYPTION")) == NULL) | |
93 | { | |
94 | /* | |
b423cd4c | 95 | * No, open the client.conf file... |
ef416fc2 | 96 | */ |
97 | ||
b423cd4c | 98 | fp = cups_open_client_conf(); |
ef416fc2 | 99 | encryption = "IfRequested"; |
100 | ||
b423cd4c | 101 | if (fp) |
ef416fc2 | 102 | { |
103 | /* | |
104 | * Read the config file and look for an Encryption line... | |
105 | */ | |
106 | ||
107 | linenum = 0; | |
108 | ||
109 | while (cupsFileGetConf(fp, line, sizeof(line), &value, &linenum) != NULL) | |
110 | if (!strcasecmp(line, "Encryption") && value) | |
111 | { | |
112 | /* | |
113 | * Got it! | |
114 | */ | |
115 | ||
116 | encryption = value; | |
117 | break; | |
118 | } | |
119 | ||
120 | cupsFileClose(fp); | |
121 | } | |
122 | } | |
123 | ||
124 | /* | |
125 | * Set the encryption preference... | |
126 | */ | |
127 | ||
128 | if (!strcasecmp(encryption, "never")) | |
129 | cg->encryption = HTTP_ENCRYPT_NEVER; | |
130 | else if (!strcasecmp(encryption, "always")) | |
131 | cg->encryption = HTTP_ENCRYPT_ALWAYS; | |
132 | else if (!strcasecmp(encryption, "required")) | |
133 | cg->encryption = HTTP_ENCRYPT_REQUIRED; | |
134 | else | |
135 | cg->encryption = HTTP_ENCRYPT_IF_REQUESTED; | |
136 | } | |
137 | ||
138 | return (cg->encryption); | |
139 | } | |
140 | ||
141 | ||
142 | /* | |
143 | * 'cupsGetPassword()' - Get a password from the user. | |
144 | * | |
ecdc0628 | 145 | * Uses the current password callback function. Returns NULL if the |
146 | * user does not provide a password. | |
ef416fc2 | 147 | */ |
148 | ||
149 | const char * /* O - Password */ | |
150 | cupsGetPassword(const char *prompt) /* I - Prompt string */ | |
151 | { | |
152 | return ((*_cupsGlobals()->password_cb)(prompt)); | |
153 | } | |
154 | ||
155 | ||
156 | /* | |
157 | * 'cupsSetEncryption()' - Set the encryption preference. | |
158 | */ | |
159 | ||
160 | void | |
161 | cupsSetEncryption(http_encryption_t e) /* I - New encryption preference */ | |
162 | { | |
163 | _cupsGlobals()->encryption = e; | |
164 | } | |
165 | ||
166 | ||
167 | /* | |
168 | * 'cupsServer()' - Return the hostname/address of the default server. | |
169 | * | |
170 | * The returned value can be a fully-qualified hostname, a numeric | |
171 | * IPv4 or IPv6 address, or a domain socket pathname. | |
172 | */ | |
173 | ||
174 | const char * /* O - Server name */ | |
175 | cupsServer(void) | |
176 | { | |
177 | cups_file_t *fp; /* client.conf file */ | |
178 | char *server; /* Pointer to server name */ | |
ef416fc2 | 179 | char *port; /* Port number */ |
180 | char line[1024], /* Line from file */ | |
181 | *value; /* Value on line */ | |
182 | int linenum; /* Line number in file */ | |
e00b005a | 183 | #ifdef CUPS_DEFAULT_DOMAINSOCKET |
184 | struct stat sockinfo; /* Domain socket information */ | |
185 | #endif /* CUPS_DEFAULT_DOMAINSOCKET */ | |
ef416fc2 | 186 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ |
187 | ||
188 | ||
189 | /* | |
190 | * First see if we have already set the server name... | |
191 | */ | |
192 | ||
193 | if (!cg->server[0]) | |
194 | { | |
195 | /* | |
196 | * Then see if the CUPS_SERVER environment variable is set... | |
197 | */ | |
198 | ||
199 | if ((server = getenv("CUPS_SERVER")) == NULL) | |
200 | { | |
201 | /* | |
b423cd4c | 202 | * No environment variable, try the client.conf file... |
ef416fc2 | 203 | */ |
204 | ||
b423cd4c | 205 | fp = cups_open_client_conf(); |
ef416fc2 | 206 | |
207 | #ifdef CUPS_DEFAULT_DOMAINSOCKET | |
e00b005a | 208 | /* |
209 | * If we are compiled with domain socket support, only use the | |
210 | * domain socket if it exists and has the right permissions... | |
211 | */ | |
212 | ||
213 | if (!stat(CUPS_DEFAULT_DOMAINSOCKET, &sockinfo) && | |
214 | (sockinfo.st_mode & S_IRWXO) == S_IRWXO) | |
ef416fc2 | 215 | server = CUPS_DEFAULT_DOMAINSOCKET; |
216 | else | |
217 | #endif /* CUPS_DEFAULT_DOMAINSOCKET */ | |
218 | server = "localhost"; | |
219 | ||
b423cd4c | 220 | if (fp) |
ef416fc2 | 221 | { |
222 | /* | |
223 | * Read the config file and look for a ServerName line... | |
224 | */ | |
225 | ||
226 | linenum = 0; | |
227 | while (cupsFileGetConf(fp, line, sizeof(line), &value, &linenum) != NULL) | |
d09495fa | 228 | { |
229 | DEBUG_printf(("cupsServer: %d: %s %s\n", linenum, line, | |
230 | value ? value : "(null)")); | |
231 | ||
ef416fc2 | 232 | if (!strcasecmp(line, "ServerName") && value) |
233 | { | |
234 | /* | |
235 | * Got it! | |
236 | */ | |
237 | ||
d09495fa | 238 | DEBUG_puts("cupsServer: Got a ServerName line!"); |
ef416fc2 | 239 | server = value; |
240 | break; | |
241 | } | |
d09495fa | 242 | } |
ef416fc2 | 243 | |
244 | cupsFileClose(fp); | |
245 | } | |
246 | } | |
247 | ||
248 | /* | |
249 | * Copy the server name over and set the port number, if any... | |
250 | */ | |
251 | ||
d09495fa | 252 | DEBUG_printf(("cupsServer: Using server \"%s\"...\n", server)); |
253 | ||
ef416fc2 | 254 | strlcpy(cg->server, server, sizeof(cg->server)); |
255 | ||
256 | if (cg->server[0] != '/' && (port = strrchr(cg->server, ':')) != NULL && | |
257 | !strchr(port, ']') && isdigit(port[1] & 255)) | |
258 | { | |
259 | *port++ = '\0'; | |
260 | ||
d09495fa | 261 | DEBUG_printf(("cupsServer: Using port %d...\n", atoi(port))); |
ef416fc2 | 262 | ippSetPort(atoi(port)); |
263 | } | |
264 | ||
265 | if (cg->server[0] == '/') | |
266 | strcpy(cg->servername, "localhost"); | |
267 | else | |
268 | strlcpy(cg->servername, cg->server, sizeof(cg->servername)); | |
269 | } | |
270 | ||
271 | return (cg->server); | |
272 | } | |
273 | ||
274 | ||
275 | /* | |
276 | * 'cupsSetPasswordCB()' - Set the password callback for CUPS. | |
277 | * | |
278 | * Pass NULL to restore the default (console) password callback. | |
279 | */ | |
280 | ||
281 | void | |
282 | cupsSetPasswordCB(cups_password_cb_t cb)/* I - Callback function */ | |
283 | { | |
284 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
285 | ||
286 | ||
287 | if (cb == (const char *(*)(const char *))0) | |
288 | cg->password_cb = _cupsGetPassword; | |
289 | else | |
290 | cg->password_cb = cb; | |
291 | } | |
292 | ||
293 | ||
294 | /* | |
295 | * 'cupsSetServer()' - Set the default server name. | |
296 | * | |
297 | * The "server" string can be a fully-qualified hostname, a numeric | |
298 | * IPv4 or IPv6 address, or a domain socket pathname. Pass NULL to | |
299 | * restore the default server name. | |
300 | */ | |
301 | ||
302 | void | |
303 | cupsSetServer(const char *server) /* I - Server name */ | |
304 | { | |
305 | char *port; /* Pointer to port */ | |
306 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
307 | ||
308 | ||
309 | if (server) | |
310 | { | |
311 | strlcpy(cg->server, server, sizeof(cg->server)); | |
312 | ||
313 | if (cg->server[0] != '/' && (port = strrchr(cg->server, ':')) != NULL && | |
314 | !strchr(port, ']') && isdigit(port[1] & 255)) | |
315 | { | |
316 | *port++ = '\0'; | |
317 | ||
318 | ippSetPort(atoi(port)); | |
319 | } | |
320 | ||
321 | if (cg->server[0] == '/') | |
322 | strcpy(cg->servername, "localhost"); | |
323 | else | |
324 | strlcpy(cg->servername, cg->server, sizeof(cg->servername)); | |
325 | } | |
326 | else | |
327 | { | |
328 | cg->server[0] = '\0'; | |
329 | cg->servername[0] = '\0'; | |
330 | } | |
331 | } | |
332 | ||
333 | ||
334 | /* | |
335 | * 'cupsSetUser()' - Set the default user name. | |
336 | * | |
337 | * Pass NULL to restore the default user name. | |
338 | */ | |
339 | ||
340 | void | |
341 | cupsSetUser(const char *user) /* I - User name */ | |
342 | { | |
343 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
344 | ||
345 | ||
346 | if (user) | |
347 | strlcpy(cg->user, user, sizeof(cg->user)); | |
348 | else | |
349 | cg->user[0] = '\0'; | |
350 | } | |
351 | ||
352 | ||
353 | #if defined(WIN32) | |
354 | /* | |
355 | * WIN32 username and password stuff. | |
356 | */ | |
357 | ||
358 | /* | |
359 | * 'cupsUser()' - Return the current user's name. | |
360 | */ | |
361 | ||
362 | const char * /* O - User name */ | |
363 | cupsUser(void) | |
364 | { | |
365 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
366 | ||
367 | ||
368 | if (!cg->user[0]) | |
369 | { | |
370 | DWORD size; /* Size of string */ | |
371 | ||
372 | ||
373 | size = sizeof(cg->user); | |
374 | if (!GetUserName(cg->user, &size)) | |
375 | { | |
376 | /* | |
377 | * Use the default username... | |
378 | */ | |
379 | ||
380 | strcpy(cg->user, "unknown"); | |
381 | } | |
382 | } | |
383 | ||
384 | return (cg->user); | |
385 | } | |
386 | ||
387 | ||
388 | /* | |
389 | * '_cupsGetPassword()' - Get a password from the user. | |
390 | */ | |
391 | ||
392 | const char * /* O - Password */ | |
393 | _cupsGetPassword(const char *prompt) /* I - Prompt string */ | |
394 | { | |
395 | return (NULL); | |
396 | } | |
397 | #else | |
398 | /* | |
399 | * UNIX username and password stuff... | |
400 | */ | |
401 | ||
402 | # include <pwd.h> | |
403 | ||
404 | /* | |
405 | * 'cupsUser()' - Return the current user's name. | |
406 | */ | |
407 | ||
408 | const char * /* O - User name */ | |
409 | cupsUser(void) | |
410 | { | |
411 | struct passwd *pwd; /* User/password entry */ | |
412 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
413 | ||
414 | ||
415 | if (!cg->user[0]) | |
416 | { | |
417 | /* | |
418 | * Rewind the password file... | |
419 | */ | |
420 | ||
421 | setpwent(); | |
422 | ||
423 | /* | |
424 | * Lookup the password entry for the current user. | |
425 | */ | |
426 | ||
427 | if ((pwd = getpwuid(getuid())) == NULL) | |
428 | strcpy(cg->user, "unknown"); /* Unknown user! */ | |
429 | else | |
430 | { | |
431 | /* | |
432 | * Copy the username... | |
433 | */ | |
434 | ||
435 | setpwent(); | |
436 | ||
437 | strlcpy(cg->user, pwd->pw_name, sizeof(cg->user)); | |
438 | } | |
439 | ||
440 | /* | |
441 | * Rewind the password file again... | |
442 | */ | |
443 | ||
444 | setpwent(); | |
445 | } | |
446 | ||
447 | return (cg->user); | |
448 | } | |
449 | ||
450 | ||
451 | /* | |
452 | * '_cupsGetPassword()' - Get a password from the user. | |
453 | */ | |
454 | ||
455 | const char * /* O - Password */ | |
456 | _cupsGetPassword(const char *prompt) /* I - Prompt string */ | |
457 | { | |
458 | return (getpass(prompt)); | |
459 | } | |
460 | #endif /* WIN32 */ | |
461 | ||
462 | ||
463 | /* | |
b423cd4c | 464 | * 'cups_open_client_conf()' - Open the client.conf file. |
465 | */ | |
466 | ||
467 | static cups_file_t * /* O - File or NULL */ | |
468 | cups_open_client_conf(void) | |
469 | { | |
470 | cups_file_t *fp; /* File */ | |
471 | const char *home; /* Home directory of user */ | |
472 | char filename[1024]; /* Filename */ | |
473 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
474 | ||
475 | ||
476 | if ((home = getenv("HOME")) != NULL) | |
477 | { | |
478 | /* | |
479 | * Look for ~/.cups/client.conf or ~/.cupsrc... | |
480 | */ | |
481 | ||
482 | snprintf(filename, sizeof(filename), "%s/.cups/client.conf", home); | |
483 | if ((fp = cupsFileOpen(filename, "r")) != NULL) | |
d09495fa | 484 | { |
485 | DEBUG_printf(("cups_open_client_conf: Using \"%s\"...\n", filename)); | |
b423cd4c | 486 | return (fp); |
d09495fa | 487 | } |
b423cd4c | 488 | |
489 | snprintf(filename, sizeof(filename), "%s/.cupsrc", home); | |
490 | if ((fp = cupsFileOpen(filename, "r")) != NULL) | |
d09495fa | 491 | { |
492 | DEBUG_printf(("cups_open_client_conf: Using \"%s\"...\n", filename)); | |
b423cd4c | 493 | return (fp); |
d09495fa | 494 | } |
b423cd4c | 495 | } |
496 | ||
497 | snprintf(filename, sizeof(filename), "%s/client.conf", cg->cups_serverroot); | |
498 | return (cupsFileOpen(filename, "r")); | |
499 | } | |
500 | ||
501 | ||
502 | /* | |
f7deaa1a | 503 | * End of "$Id: usersys.c 5901 2006-08-29 15:49:34Z mike $". |
ef416fc2 | 504 | */ |