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ef416fc2 | 1 | /* |
e00b005a | 2 | * "$Id: usersys.c 5041 2006-02-01 16:54:50Z 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 | * | |
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 | */ | |
39 | ||
40 | /* | |
41 | * Include necessary headers... | |
42 | */ | |
43 | ||
44 | #include "http-private.h" | |
45 | #include "globals.h" | |
46 | #include <stdlib.h> | |
e00b005a | 47 | #include <sys/stat.h> |
ef416fc2 | 48 | #ifdef WIN32 |
49 | # include <windows.h> | |
50 | #endif /* WIN32 */ | |
51 | ||
52 | ||
53 | /* | |
54 | * 'cupsEncryption()' - Get the default encryption settings. | |
55 | * | |
56 | * The default encryption setting comes from the CUPS_ENCRYPTION | |
57 | * environment variable, then the ~/.cupsrc file, and finally the | |
58 | * /etc/cups/client.conf file. If not set, the default is | |
59 | * HTTP_ENCRYPT_IF_REQUESTED. | |
60 | */ | |
61 | ||
62 | http_encryption_t /* O - Encryption settings */ | |
63 | cupsEncryption(void) | |
64 | { | |
65 | cups_file_t *fp; /* client.conf file */ | |
66 | char *encryption; /* CUPS_ENCRYPTION variable */ | |
67 | const char *home; /* Home directory of user */ | |
68 | char line[1024], /* Line from file */ | |
69 | *value; /* Value on line */ | |
70 | int linenum; /* Line number */ | |
71 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
72 | ||
73 | ||
74 | /* | |
75 | * First see if we have already set the encryption stuff... | |
76 | */ | |
77 | ||
78 | if (cg->encryption == (http_encryption_t)-1) | |
79 | { | |
80 | /* | |
81 | * Then see if the CUPS_ENCRYPTION environment variable is set... | |
82 | */ | |
83 | ||
84 | if ((encryption = getenv("CUPS_ENCRYPTION")) == NULL) | |
85 | { | |
86 | /* | |
87 | * Next check to see if we have a $HOME/.cupsrc or client.conf file... | |
88 | */ | |
89 | ||
90 | if ((home = getenv("HOME")) != NULL) | |
91 | { | |
92 | snprintf(line, sizeof(line), "%s/.cupsrc", home); | |
93 | fp = cupsFileOpen(line, "r"); | |
94 | } | |
95 | else | |
96 | fp = NULL; | |
97 | ||
98 | if (fp == NULL) | |
99 | { | |
100 | snprintf(line, sizeof(line), "%s/client.conf", cg->cups_serverroot); | |
101 | fp = cupsFileOpen(line, "r"); | |
102 | } | |
103 | ||
104 | encryption = "IfRequested"; | |
105 | ||
106 | if (fp != NULL) | |
107 | { | |
108 | /* | |
109 | * Read the config file and look for an Encryption line... | |
110 | */ | |
111 | ||
112 | linenum = 0; | |
113 | ||
114 | while (cupsFileGetConf(fp, line, sizeof(line), &value, &linenum) != NULL) | |
115 | if (!strcasecmp(line, "Encryption") && value) | |
116 | { | |
117 | /* | |
118 | * Got it! | |
119 | */ | |
120 | ||
121 | encryption = value; | |
122 | break; | |
123 | } | |
124 | ||
125 | cupsFileClose(fp); | |
126 | } | |
127 | } | |
128 | ||
129 | /* | |
130 | * Set the encryption preference... | |
131 | */ | |
132 | ||
133 | if (!strcasecmp(encryption, "never")) | |
134 | cg->encryption = HTTP_ENCRYPT_NEVER; | |
135 | else if (!strcasecmp(encryption, "always")) | |
136 | cg->encryption = HTTP_ENCRYPT_ALWAYS; | |
137 | else if (!strcasecmp(encryption, "required")) | |
138 | cg->encryption = HTTP_ENCRYPT_REQUIRED; | |
139 | else | |
140 | cg->encryption = HTTP_ENCRYPT_IF_REQUESTED; | |
141 | } | |
142 | ||
143 | return (cg->encryption); | |
144 | } | |
145 | ||
146 | ||
147 | /* | |
148 | * 'cupsGetPassword()' - Get a password from the user. | |
149 | * | |
150 | * Returns NULL if the user does not provide a password. | |
151 | */ | |
152 | ||
153 | const char * /* O - Password */ | |
154 | cupsGetPassword(const char *prompt) /* I - Prompt string */ | |
155 | { | |
156 | return ((*_cupsGlobals()->password_cb)(prompt)); | |
157 | } | |
158 | ||
159 | ||
160 | /* | |
161 | * 'cupsSetEncryption()' - Set the encryption preference. | |
162 | */ | |
163 | ||
164 | void | |
165 | cupsSetEncryption(http_encryption_t e) /* I - New encryption preference */ | |
166 | { | |
167 | _cupsGlobals()->encryption = e; | |
168 | } | |
169 | ||
170 | ||
171 | /* | |
172 | * 'cupsServer()' - Return the hostname/address of the default server. | |
173 | * | |
174 | * The returned value can be a fully-qualified hostname, a numeric | |
175 | * IPv4 or IPv6 address, or a domain socket pathname. | |
176 | */ | |
177 | ||
178 | const char * /* O - Server name */ | |
179 | cupsServer(void) | |
180 | { | |
181 | cups_file_t *fp; /* client.conf file */ | |
182 | char *server; /* Pointer to server name */ | |
183 | const char *home; /* Home directory of user */ | |
184 | char *port; /* Port number */ | |
185 | char line[1024], /* Line from file */ | |
186 | *value; /* Value on line */ | |
187 | int linenum; /* Line number in file */ | |
e00b005a | 188 | #ifdef CUPS_DEFAULT_DOMAINSOCKET |
189 | struct stat sockinfo; /* Domain socket information */ | |
190 | #endif /* CUPS_DEFAULT_DOMAINSOCKET */ | |
ef416fc2 | 191 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ |
192 | ||
193 | ||
194 | /* | |
195 | * First see if we have already set the server name... | |
196 | */ | |
197 | ||
198 | if (!cg->server[0]) | |
199 | { | |
200 | /* | |
201 | * Then see if the CUPS_SERVER environment variable is set... | |
202 | */ | |
203 | ||
204 | if ((server = getenv("CUPS_SERVER")) == NULL) | |
205 | { | |
206 | /* | |
207 | * Next check to see if we have a $HOME/.cupsrc or client.conf file... | |
208 | */ | |
209 | ||
210 | if ((home = getenv("HOME")) != NULL) | |
211 | { | |
212 | snprintf(line, sizeof(line), "%s/.cupsrc", home); | |
213 | fp = cupsFileOpen(line, "r"); | |
214 | } | |
215 | else | |
216 | fp = NULL; | |
217 | ||
218 | if (fp == NULL) | |
219 | { | |
220 | snprintf(line, sizeof(line), "%s/client.conf", cg->cups_serverroot); | |
221 | fp = cupsFileOpen(line, "r"); | |
222 | } | |
223 | ||
224 | #ifdef CUPS_DEFAULT_DOMAINSOCKET | |
e00b005a | 225 | /* |
226 | * If we are compiled with domain socket support, only use the | |
227 | * domain socket if it exists and has the right permissions... | |
228 | */ | |
229 | ||
230 | if (!stat(CUPS_DEFAULT_DOMAINSOCKET, &sockinfo) && | |
231 | (sockinfo.st_mode & S_IRWXO) == S_IRWXO) | |
ef416fc2 | 232 | server = CUPS_DEFAULT_DOMAINSOCKET; |
233 | else | |
234 | #endif /* CUPS_DEFAULT_DOMAINSOCKET */ | |
235 | server = "localhost"; | |
236 | ||
237 | if (fp != NULL) | |
238 | { | |
239 | /* | |
240 | * Read the config file and look for a ServerName line... | |
241 | */ | |
242 | ||
243 | linenum = 0; | |
244 | while (cupsFileGetConf(fp, line, sizeof(line), &value, &linenum) != NULL) | |
245 | if (!strcasecmp(line, "ServerName") && value) | |
246 | { | |
247 | /* | |
248 | * Got it! | |
249 | */ | |
250 | ||
251 | server = value; | |
252 | break; | |
253 | } | |
254 | ||
255 | cupsFileClose(fp); | |
256 | } | |
257 | } | |
258 | ||
259 | /* | |
260 | * Copy the server name over and set the port number, if any... | |
261 | */ | |
262 | ||
263 | strlcpy(cg->server, server, sizeof(cg->server)); | |
264 | ||
265 | if (cg->server[0] != '/' && (port = strrchr(cg->server, ':')) != NULL && | |
266 | !strchr(port, ']') && isdigit(port[1] & 255)) | |
267 | { | |
268 | *port++ = '\0'; | |
269 | ||
270 | ippSetPort(atoi(port)); | |
271 | } | |
272 | ||
273 | if (cg->server[0] == '/') | |
274 | strcpy(cg->servername, "localhost"); | |
275 | else | |
276 | strlcpy(cg->servername, cg->server, sizeof(cg->servername)); | |
277 | } | |
278 | ||
279 | return (cg->server); | |
280 | } | |
281 | ||
282 | ||
283 | /* | |
284 | * 'cupsSetPasswordCB()' - Set the password callback for CUPS. | |
285 | * | |
286 | * Pass NULL to restore the default (console) password callback. | |
287 | */ | |
288 | ||
289 | void | |
290 | cupsSetPasswordCB(cups_password_cb_t cb)/* I - Callback function */ | |
291 | { | |
292 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
293 | ||
294 | ||
295 | if (cb == (const char *(*)(const char *))0) | |
296 | cg->password_cb = _cupsGetPassword; | |
297 | else | |
298 | cg->password_cb = cb; | |
299 | } | |
300 | ||
301 | ||
302 | /* | |
303 | * 'cupsSetServer()' - Set the default server name. | |
304 | * | |
305 | * The "server" string can be a fully-qualified hostname, a numeric | |
306 | * IPv4 or IPv6 address, or a domain socket pathname. Pass NULL to | |
307 | * restore the default server name. | |
308 | */ | |
309 | ||
310 | void | |
311 | cupsSetServer(const char *server) /* I - Server name */ | |
312 | { | |
313 | char *port; /* Pointer to port */ | |
314 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
315 | ||
316 | ||
317 | if (server) | |
318 | { | |
319 | strlcpy(cg->server, server, sizeof(cg->server)); | |
320 | ||
321 | if (cg->server[0] != '/' && (port = strrchr(cg->server, ':')) != NULL && | |
322 | !strchr(port, ']') && isdigit(port[1] & 255)) | |
323 | { | |
324 | *port++ = '\0'; | |
325 | ||
326 | ippSetPort(atoi(port)); | |
327 | } | |
328 | ||
329 | if (cg->server[0] == '/') | |
330 | strcpy(cg->servername, "localhost"); | |
331 | else | |
332 | strlcpy(cg->servername, cg->server, sizeof(cg->servername)); | |
333 | } | |
334 | else | |
335 | { | |
336 | cg->server[0] = '\0'; | |
337 | cg->servername[0] = '\0'; | |
338 | } | |
339 | } | |
340 | ||
341 | ||
342 | /* | |
343 | * 'cupsSetUser()' - Set the default user name. | |
344 | * | |
345 | * Pass NULL to restore the default user name. | |
346 | */ | |
347 | ||
348 | void | |
349 | cupsSetUser(const char *user) /* I - User name */ | |
350 | { | |
351 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
352 | ||
353 | ||
354 | if (user) | |
355 | strlcpy(cg->user, user, sizeof(cg->user)); | |
356 | else | |
357 | cg->user[0] = '\0'; | |
358 | } | |
359 | ||
360 | ||
361 | #if defined(WIN32) | |
362 | /* | |
363 | * WIN32 username and password stuff. | |
364 | */ | |
365 | ||
366 | /* | |
367 | * 'cupsUser()' - Return the current user's name. | |
368 | */ | |
369 | ||
370 | const char * /* O - User name */ | |
371 | cupsUser(void) | |
372 | { | |
373 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
374 | ||
375 | ||
376 | if (!cg->user[0]) | |
377 | { | |
378 | DWORD size; /* Size of string */ | |
379 | ||
380 | ||
381 | size = sizeof(cg->user); | |
382 | if (!GetUserName(cg->user, &size)) | |
383 | { | |
384 | /* | |
385 | * Use the default username... | |
386 | */ | |
387 | ||
388 | strcpy(cg->user, "unknown"); | |
389 | } | |
390 | } | |
391 | ||
392 | return (cg->user); | |
393 | } | |
394 | ||
395 | ||
396 | /* | |
397 | * '_cupsGetPassword()' - Get a password from the user. | |
398 | */ | |
399 | ||
400 | const char * /* O - Password */ | |
401 | _cupsGetPassword(const char *prompt) /* I - Prompt string */ | |
402 | { | |
403 | return (NULL); | |
404 | } | |
405 | #else | |
406 | /* | |
407 | * UNIX username and password stuff... | |
408 | */ | |
409 | ||
410 | # include <pwd.h> | |
411 | ||
412 | /* | |
413 | * 'cupsUser()' - Return the current user's name. | |
414 | */ | |
415 | ||
416 | const char * /* O - User name */ | |
417 | cupsUser(void) | |
418 | { | |
419 | struct passwd *pwd; /* User/password entry */ | |
420 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
421 | ||
422 | ||
423 | if (!cg->user[0]) | |
424 | { | |
425 | /* | |
426 | * Rewind the password file... | |
427 | */ | |
428 | ||
429 | setpwent(); | |
430 | ||
431 | /* | |
432 | * Lookup the password entry for the current user. | |
433 | */ | |
434 | ||
435 | if ((pwd = getpwuid(getuid())) == NULL) | |
436 | strcpy(cg->user, "unknown"); /* Unknown user! */ | |
437 | else | |
438 | { | |
439 | /* | |
440 | * Copy the username... | |
441 | */ | |
442 | ||
443 | setpwent(); | |
444 | ||
445 | strlcpy(cg->user, pwd->pw_name, sizeof(cg->user)); | |
446 | } | |
447 | ||
448 | /* | |
449 | * Rewind the password file again... | |
450 | */ | |
451 | ||
452 | setpwent(); | |
453 | } | |
454 | ||
455 | return (cg->user); | |
456 | } | |
457 | ||
458 | ||
459 | /* | |
460 | * '_cupsGetPassword()' - Get a password from the user. | |
461 | */ | |
462 | ||
463 | const char * /* O - Password */ | |
464 | _cupsGetPassword(const char *prompt) /* I - Prompt string */ | |
465 | { | |
466 | return (getpass(prompt)); | |
467 | } | |
468 | #endif /* WIN32 */ | |
469 | ||
470 | ||
471 | /* | |
e00b005a | 472 | * End of "$Id: usersys.c 5041 2006-02-01 16:54:50Z mike $". |
ef416fc2 | 473 | */ |