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Commit | Line | Data |
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ef416fc2 | 1 | /* |
7e86f2f6 | 2 | * CGI form variable and array functions for CUPS. |
ef416fc2 | 3 | * |
86c184ff MS |
4 | * Copyright © 2007-2019 by Apple Inc. |
5 | * Copyright © 1997-2005 by Easy Software Products. | |
ef416fc2 | 6 | * |
507c4adc MS |
7 | * Licensed under Apache License v2.0. See the file "LICENSE" for more |
8 | * information. | |
7e86f2f6 MS |
9 | */ |
10 | ||
11 | /* | |
12 | * Include necessary headers... | |
ef416fc2 | 13 | */ |
14 | ||
15 | /*#define DEBUG*/ | |
16 | #include "cgi-private.h" | |
f8b3a85b | 17 | #include <cups/http.h> |
f8b3a85b MS |
18 | |
19 | ||
20 | /* | |
21 | * Session ID name | |
22 | */ | |
23 | ||
24 | #define CUPS_SID "org.cups.sid" | |
ef416fc2 | 25 | |
26 | ||
27 | /* | |
28 | * Data structure to hold all the CGI form variables and arrays... | |
29 | */ | |
30 | ||
31 | typedef struct /**** Form variable structure ****/ | |
32 | { | |
86c184ff | 33 | char *name; /* Name of variable */ |
ef416fc2 | 34 | int nvalues, /* Number of values */ |
35 | avalues; /* Number of values allocated */ | |
86c184ff | 36 | char **values; /* Value(s) of variable */ |
ef416fc2 | 37 | } _cgi_var_t; |
38 | ||
39 | ||
40 | /* | |
41 | * Local globals... | |
42 | */ | |
43 | ||
f8b3a85b MS |
44 | static int num_cookies = 0;/* Number of cookies */ |
45 | static cups_option_t *cookies = NULL;/* Cookies */ | |
ef416fc2 | 46 | static int form_count = 0, /* Form variable count */ |
47 | form_alloc = 0; /* Number of variables allocated */ | |
48 | static _cgi_var_t *form_vars = NULL; | |
49 | /* Form variables */ | |
50 | static cgi_file_t *form_file = NULL; | |
51 | /* Uploaded file */ | |
52 | ||
53 | ||
54 | /* | |
55 | * Local functions... | |
56 | */ | |
57 | ||
58 | static void cgi_add_variable(const char *name, int element, | |
59 | const char *value); | |
60 | static int cgi_compare_variables(const _cgi_var_t *v1, | |
61 | const _cgi_var_t *v2); | |
62 | static _cgi_var_t *cgi_find_variable(const char *name); | |
f8b3a85b | 63 | static void cgi_initialize_cookies(void); |
ef416fc2 | 64 | static int cgi_initialize_get(void); |
65 | static int cgi_initialize_multipart(const char *boundary); | |
66 | static int cgi_initialize_post(void); | |
67 | static int cgi_initialize_string(const char *data); | |
68 | static const char *cgi_passwd(const char *prompt); | |
f8b3a85b | 69 | static const char *cgi_set_sid(void); |
ef416fc2 | 70 | static void cgi_sort_variables(void); |
71 | static void cgi_unlink_file(void); | |
72 | ||
73 | ||
74 | /* | |
75 | * 'cgiCheckVariables()' - Check for the presence of "required" variables. | |
76 | * | |
77 | * Names may be separated by spaces and/or commas. | |
78 | */ | |
79 | ||
80 | int /* O - 1 if all variables present, 0 otherwise */ | |
81 | cgiCheckVariables(const char *names) /* I - Variables to look for */ | |
82 | { | |
83 | char name[255], /* Current variable name */ | |
84 | *s; /* Pointer in string */ | |
85 | const char *val; /* Value of variable */ | |
86 | int element; /* Array element number */ | |
87 | ||
88 | ||
89 | if (names == NULL) | |
90 | return (1); | |
91 | ||
92 | while (*names != '\0') | |
93 | { | |
94 | while (*names == ' ' || *names == ',') | |
95 | names ++; | |
96 | ||
97 | for (s = name; *names != '\0' && *names != ' ' && *names != ','; s ++, names ++) | |
98 | *s = *names; | |
99 | ||
100 | *s = 0; | |
101 | if (name[0] == '\0') | |
102 | break; | |
103 | ||
104 | if ((s = strrchr(name, '-')) != NULL) | |
105 | { | |
106 | *s = '\0'; | |
107 | element = atoi(s + 1) - 1; | |
108 | val = cgiGetArray(name, element); | |
109 | } | |
110 | else | |
111 | val = cgiGetVariable(name); | |
112 | ||
113 | if (val == NULL) | |
114 | return (0); | |
115 | ||
116 | if (*val == '\0') | |
507c4adc MS |
117 | { |
118 | free((void *)val); | |
ef416fc2 | 119 | return (0); /* Can't be blank, either! */ |
507c4adc MS |
120 | } |
121 | ||
122 | free((void *)val); | |
ef416fc2 | 123 | } |
124 | ||
125 | return (1); | |
126 | } | |
127 | ||
128 | ||
ef55b745 MS |
129 | /* |
130 | * 'cgiClearVariables()' - Clear all form variables. | |
131 | */ | |
132 | ||
133 | void | |
134 | cgiClearVariables(void) | |
135 | { | |
136 | int i, j; /* Looping vars */ | |
137 | _cgi_var_t *v; /* Current variable */ | |
138 | ||
139 | ||
82cc1f9a MS |
140 | fputs("DEBUG: cgiClearVariables called.\n", stderr); |
141 | ||
ef55b745 MS |
142 | for (v = form_vars, i = form_count; i > 0; v ++, i --) |
143 | { | |
86c184ff | 144 | free(v->name); |
ef55b745 MS |
145 | for (j = 0; j < v->nvalues; j ++) |
146 | if (v->values[j]) | |
86c184ff | 147 | free(v->values[j]); |
ef55b745 MS |
148 | } |
149 | ||
150 | form_count = 0; | |
151 | ||
152 | cgi_unlink_file(); | |
153 | } | |
154 | ||
155 | ||
ef416fc2 | 156 | /* |
f8b3a85b | 157 | * 'cgiGetArray()' - Get an element from a form array. |
ef416fc2 | 158 | */ |
159 | ||
507c4adc | 160 | char * /* O - Element value or NULL */ |
ef416fc2 | 161 | cgiGetArray(const char *name, /* I - Name of array variable */ |
162 | int element) /* I - Element number (0 to N) */ | |
163 | { | |
164 | _cgi_var_t *var; /* Pointer to variable */ | |
165 | ||
166 | ||
167 | if ((var = cgi_find_variable(name)) == NULL) | |
168 | return (NULL); | |
169 | ||
ef416fc2 | 170 | if (element < 0 || element >= var->nvalues) |
171 | return (NULL); | |
172 | ||
eda46e3a ZD |
173 | if (var->values[element] == NULL) |
174 | return (NULL); | |
175 | ||
86c184ff | 176 | return (strdup(var->values[element])); |
ef416fc2 | 177 | } |
178 | ||
179 | ||
f8b3a85b MS |
180 | /* |
181 | * 'cgiGetCookie()' - Get a cookie value. | |
182 | */ | |
183 | ||
184 | const char * /* O - Value or NULL */ | |
185 | cgiGetCookie(const char *name) /* I - Name of cookie */ | |
186 | { | |
187 | return (cupsGetOption(name, num_cookies, cookies)); | |
188 | } | |
189 | ||
190 | ||
ef416fc2 | 191 | /* |
192 | * 'cgiGetFile()' - Get the file (if any) that was submitted in the form. | |
193 | */ | |
194 | ||
195 | const cgi_file_t * /* O - Attached file or NULL */ | |
196 | cgiGetFile(void) | |
197 | { | |
198 | return (form_file); | |
199 | } | |
200 | ||
201 | ||
202 | /* | |
203 | * 'cgiGetSize()' - Get the size of a form array value. | |
204 | */ | |
205 | ||
206 | int /* O - Number of elements */ | |
207 | cgiGetSize(const char *name) /* I - Name of variable */ | |
208 | { | |
209 | _cgi_var_t *var; /* Pointer to variable */ | |
210 | ||
211 | ||
212 | if ((var = cgi_find_variable(name)) == NULL) | |
213 | return (0); | |
214 | ||
215 | return (var->nvalues); | |
216 | } | |
217 | ||
218 | ||
219 | /* | |
f8b3a85b | 220 | * 'cgiGetVariable()' - Get a CGI variable from the database. |
ef416fc2 | 221 | * |
222 | * Returns NULL if the variable doesn't exist. If the variable is an | |
f8b3a85b | 223 | * array of values, returns the last element. |
ef416fc2 | 224 | */ |
225 | ||
507c4adc | 226 | char * /* O - Value of variable */ |
ef416fc2 | 227 | cgiGetVariable(const char *name) /* I - Name of variable */ |
228 | { | |
229 | const _cgi_var_t *var; /* Returned variable */ | |
230 | ||
231 | ||
232 | var = cgi_find_variable(name); | |
233 | ||
86c184ff | 234 | return ((var == NULL) ? NULL : strdup(var->values[var->nvalues - 1])); |
ef416fc2 | 235 | } |
236 | ||
237 | ||
238 | /* | |
f8b3a85b | 239 | * 'cgiInitialize()' - Initialize the CGI variable "database". |
ef416fc2 | 240 | */ |
241 | ||
242 | int /* O - Non-zero if there was form data */ | |
243 | cgiInitialize(void) | |
244 | { | |
f8b3a85b MS |
245 | const char *method, /* Form posting method */ |
246 | *content_type, /* Content-Type of post data */ | |
247 | *cups_sid_cookie, /* SID cookie */ | |
248 | *cups_sid_form; /* SID form variable */ | |
ef416fc2 | 249 | |
250 | ||
251 | /* | |
252 | * Setup a password callback for authentication... | |
253 | */ | |
254 | ||
255 | cupsSetPasswordCB(cgi_passwd); | |
256 | ||
80ca4592 | 257 | /* |
258 | * Set the locale so that times, etc. are formatted properly... | |
259 | */ | |
260 | ||
261 | setlocale(LC_ALL, ""); | |
262 | ||
ef416fc2 | 263 | #ifdef DEBUG |
264 | /* | |
265 | * Disable output buffering to find bugs... | |
266 | */ | |
267 | ||
268 | setbuf(stdout, NULL); | |
ef416fc2 | 269 | #endif /* DEBUG */ |
270 | ||
f8b3a85b MS |
271 | /* |
272 | * Get cookies... | |
273 | */ | |
274 | ||
275 | cgi_initialize_cookies(); | |
276 | ||
277 | if ((cups_sid_cookie = cgiGetCookie(CUPS_SID)) == NULL) | |
278 | { | |
279 | fputs("DEBUG: " CUPS_SID " cookie not found, initializing!\n", stderr); | |
280 | cups_sid_cookie = cgi_set_sid(); | |
281 | } | |
282 | ||
283 | fprintf(stderr, "DEBUG: " CUPS_SID " cookie is \"%s\"\n", cups_sid_cookie); | |
284 | ||
ef416fc2 | 285 | /* |
286 | * Get the request method (GET or POST)... | |
287 | */ | |
288 | ||
289 | method = getenv("REQUEST_METHOD"); | |
290 | content_type = getenv("CONTENT_TYPE"); | |
291 | if (!method) | |
292 | return (0); | |
293 | ||
294 | /* | |
295 | * Grab form data from the corresponding location... | |
296 | */ | |
297 | ||
88f9aafc | 298 | if (!_cups_strcasecmp(method, "GET")) |
ef416fc2 | 299 | return (cgi_initialize_get()); |
88f9aafc | 300 | else if (!_cups_strcasecmp(method, "POST") && content_type) |
ef416fc2 | 301 | { |
302 | const char *boundary = strstr(content_type, "boundary="); | |
303 | ||
304 | if (boundary) | |
305 | boundary += 9; | |
306 | ||
307 | if (content_type && !strncmp(content_type, "multipart/form-data; ", 21)) | |
f8b3a85b MS |
308 | { |
309 | if (!cgi_initialize_multipart(boundary)) | |
310 | return (0); | |
311 | } | |
312 | else if (!cgi_initialize_post()) | |
313 | return (0); | |
314 | ||
315 | if ((cups_sid_form = cgiGetVariable(CUPS_SID)) == NULL || | |
316 | strcmp(cups_sid_cookie, cups_sid_form)) | |
317 | { | |
318 | if (cups_sid_form) | |
319 | fprintf(stderr, "DEBUG: " CUPS_SID " form variable is \"%s\"\n", | |
320 | cups_sid_form); | |
321 | else | |
322 | fputs("DEBUG: " CUPS_SID " form variable is not present.\n", stderr); | |
323 | ||
507c4adc MS |
324 | free((void *)cups_sid_form); |
325 | ||
f8b3a85b | 326 | cgiClearVariables(); |
507c4adc | 327 | |
f8b3a85b MS |
328 | return (0); |
329 | } | |
ef416fc2 | 330 | else |
507c4adc MS |
331 | { |
332 | free((void *)cups_sid_form); | |
333 | ||
f8b3a85b | 334 | return (1); |
507c4adc | 335 | } |
ef416fc2 | 336 | } |
337 | else | |
338 | return (0); | |
339 | } | |
340 | ||
341 | ||
342 | /* | |
343 | * 'cgiIsPOST()' - Determine whether this page was POSTed. | |
344 | */ | |
345 | ||
346 | int /* O - 1 if POST, 0 if GET */ | |
347 | cgiIsPOST(void) | |
348 | { | |
349 | const char *method; /* REQUEST_METHOD environment variable */ | |
350 | ||
351 | ||
352 | if ((method = getenv("REQUEST_METHOD")) == NULL) | |
353 | return (0); | |
354 | else | |
355 | return (!strcmp(method, "POST")); | |
356 | } | |
357 | ||
358 | ||
359 | /* | |
360 | * 'cgiSetArray()' - Set array element N to the specified string. | |
361 | * | |
362 | * If the variable array is smaller than (element + 1), the intervening | |
363 | * elements are set to NULL. | |
364 | */ | |
365 | ||
366 | void | |
367 | cgiSetArray(const char *name, /* I - Name of variable */ | |
368 | int element, /* I - Element number (0 to N) */ | |
369 | const char *value) /* I - Value of variable */ | |
370 | { | |
371 | int i; /* Looping var */ | |
372 | _cgi_var_t *var; /* Returned variable */ | |
373 | ||
374 | ||
375 | if (name == NULL || value == NULL || element < 0 || element > 100000) | |
376 | return; | |
377 | ||
82cc1f9a MS |
378 | fprintf(stderr, "DEBUG: cgiSetArray: %s[%d]=\"%s\"\n", name, element, value); |
379 | ||
ef416fc2 | 380 | if ((var = cgi_find_variable(name)) == NULL) |
381 | { | |
382 | cgi_add_variable(name, element, value); | |
383 | cgi_sort_variables(); | |
384 | } | |
385 | else | |
386 | { | |
387 | if (element >= var->avalues) | |
388 | { | |
86c184ff | 389 | char **temp; /* Temporary pointer */ |
91c84a35 | 390 | |
86c184ff | 391 | temp = (char **)realloc((void *)(var->values), sizeof(char *) * (size_t)(element + 16)); |
91c84a35 MS |
392 | if (!temp) |
393 | return; | |
394 | ||
ef416fc2 | 395 | var->avalues = element + 16; |
91c84a35 | 396 | var->values = temp; |
ef416fc2 | 397 | } |
398 | ||
399 | if (element >= var->nvalues) | |
400 | { | |
401 | for (i = var->nvalues; i < element; i ++) | |
402 | var->values[i] = NULL; | |
403 | ||
404 | var->nvalues = element + 1; | |
405 | } | |
406 | else if (var->values[element]) | |
86c184ff | 407 | free((char *)var->values[element]); |
ef416fc2 | 408 | |
86c184ff | 409 | var->values[element] = strdup(value); |
ef416fc2 | 410 | } |
411 | } | |
412 | ||
413 | ||
f8b3a85b MS |
414 | /* |
415 | * 'cgiSetCookie()' - Set a cookie value. | |
416 | */ | |
417 | ||
418 | void | |
419 | cgiSetCookie(const char *name, /* I - Name */ | |
420 | const char *value, /* I - Value */ | |
421 | const char *path, /* I - Path (typically "/") */ | |
422 | const char *domain, /* I - Domain name */ | |
423 | time_t expires, /* I - Expiration date (0 for session) */ | |
424 | int secure) /* I - Require SSL */ | |
425 | { | |
426 | num_cookies = cupsAddOption(name, value, num_cookies, &cookies); | |
427 | ||
428 | printf("Set-Cookie: %s=%s;", name, value); | |
429 | if (path) | |
85dda01c | 430 | printf(" path=%s;", path); |
f8b3a85b | 431 | if (domain) |
85dda01c | 432 | printf(" domain=%s;", domain); |
f8b3a85b MS |
433 | if (expires) |
434 | { | |
435 | char date[256]; /* Date string */ | |
436 | ||
85dda01c | 437 | printf(" expires=%s;", httpGetDateString2(expires, date, sizeof(date))); |
f8b3a85b MS |
438 | } |
439 | if (secure) | |
6c2b2b19 | 440 | puts(" httponly; secure;"); |
f8b3a85b | 441 | else |
6c2b2b19 | 442 | puts(" httponly;"); |
f8b3a85b MS |
443 | } |
444 | ||
445 | ||
ef416fc2 | 446 | /* |
447 | * 'cgiSetSize()' - Set the array size. | |
448 | */ | |
449 | ||
450 | void | |
451 | cgiSetSize(const char *name, /* I - Name of variable */ | |
452 | int size) /* I - Number of elements (0 to N) */ | |
453 | { | |
454 | int i; /* Looping var */ | |
455 | _cgi_var_t *var; /* Returned variable */ | |
456 | ||
457 | ||
458 | if (name == NULL || size < 0 || size > 100000) | |
459 | return; | |
460 | ||
461 | if ((var = cgi_find_variable(name)) == NULL) | |
462 | return; | |
463 | ||
464 | if (size >= var->avalues) | |
465 | { | |
86c184ff | 466 | char **temp; /* Temporary pointer */ |
91c84a35 | 467 | |
86c184ff | 468 | temp = (char **)realloc((void *)(var->values), sizeof(char *) * (size_t)(size + 16)); |
91c84a35 MS |
469 | if (!temp) |
470 | return; | |
471 | ||
ef416fc2 | 472 | var->avalues = size + 16; |
91c84a35 | 473 | var->values = temp; |
ef416fc2 | 474 | } |
475 | ||
476 | if (size > var->nvalues) | |
477 | { | |
478 | for (i = var->nvalues; i < size; i ++) | |
479 | var->values[i] = NULL; | |
480 | } | |
481 | else if (size < var->nvalues) | |
482 | { | |
483 | for (i = size; i < var->nvalues; i ++) | |
484 | if (var->values[i]) | |
86c184ff | 485 | free((void *)(var->values[i])); |
ef416fc2 | 486 | } |
487 | ||
488 | var->nvalues = size; | |
489 | } | |
490 | ||
491 | ||
492 | /* | |
f8b3a85b | 493 | * 'cgiSetVariable()' - Set a CGI variable in the database. |
ef416fc2 | 494 | * |
495 | * If the variable is an array, this truncates the array to a single element. | |
496 | */ | |
497 | ||
498 | void | |
499 | cgiSetVariable(const char *name, /* I - Name of variable */ | |
500 | const char *value) /* I - Value of variable */ | |
501 | { | |
502 | int i; /* Looping var */ | |
503 | _cgi_var_t *var; /* Returned variable */ | |
504 | ||
505 | ||
506 | if (name == NULL || value == NULL) | |
507 | return; | |
508 | ||
82cc1f9a MS |
509 | fprintf(stderr, "cgiSetVariable: %s=\"%s\"\n", name, value); |
510 | ||
ef416fc2 | 511 | if ((var = cgi_find_variable(name)) == NULL) |
512 | { | |
513 | cgi_add_variable(name, 0, value); | |
514 | cgi_sort_variables(); | |
515 | } | |
516 | else | |
517 | { | |
518 | for (i = 0; i < var->nvalues; i ++) | |
519 | if (var->values[i]) | |
86c184ff | 520 | free((char *)var->values[i]); |
ef416fc2 | 521 | |
86c184ff | 522 | var->values[0] = strdup(value); |
ef416fc2 | 523 | var->nvalues = 1; |
524 | } | |
525 | } | |
526 | ||
527 | ||
528 | /* | |
529 | * 'cgi_add_variable()' - Add a form variable. | |
530 | */ | |
531 | ||
532 | static void | |
533 | cgi_add_variable(const char *name, /* I - Variable name */ | |
534 | int element, /* I - Array element number */ | |
535 | const char *value) /* I - Variable value */ | |
536 | { | |
91c84a35 | 537 | _cgi_var_t *var; /* New variable */ |
ef416fc2 | 538 | |
539 | ||
540 | if (name == NULL || value == NULL || element < 0 || element > 100000) | |
541 | return; | |
542 | ||
ef416fc2 | 543 | if (form_count >= form_alloc) |
544 | { | |
91c84a35 MS |
545 | _cgi_var_t *temp_vars; /* Temporary form pointer */ |
546 | ||
547 | ||
ef416fc2 | 548 | if (form_alloc == 0) |
91c84a35 | 549 | temp_vars = malloc(sizeof(_cgi_var_t) * 16); |
ef416fc2 | 550 | else |
7e86f2f6 | 551 | temp_vars = realloc(form_vars, (size_t)(form_alloc + 16) * sizeof(_cgi_var_t)); |
91c84a35 MS |
552 | |
553 | if (!temp_vars) | |
554 | return; | |
ef416fc2 | 555 | |
91c84a35 | 556 | form_vars = temp_vars; |
ef416fc2 | 557 | form_alloc += 16; |
558 | } | |
559 | ||
91c84a35 MS |
560 | var = form_vars + form_count; |
561 | ||
7e86f2f6 | 562 | if ((var->values = calloc((size_t)element + 1, sizeof(char *))) == NULL) |
91c84a35 MS |
563 | return; |
564 | ||
86c184ff | 565 | var->name = strdup(name); |
ef416fc2 | 566 | var->nvalues = element + 1; |
567 | var->avalues = element + 1; | |
86c184ff | 568 | var->values[element] = strdup(value); |
ef416fc2 | 569 | |
570 | form_count ++; | |
571 | } | |
572 | ||
573 | ||
574 | /* | |
575 | * 'cgi_compare_variables()' - Compare two variables. | |
576 | */ | |
577 | ||
578 | static int /* O - Result of comparison */ | |
579 | cgi_compare_variables( | |
580 | const _cgi_var_t *v1, /* I - First variable */ | |
581 | const _cgi_var_t *v2) /* I - Second variable */ | |
582 | { | |
88f9aafc | 583 | return (_cups_strcasecmp(v1->name, v2->name)); |
ef416fc2 | 584 | } |
585 | ||
586 | ||
587 | /* | |
f8b3a85b | 588 | * 'cgi_find_variable()' - Find a variable. |
ef416fc2 | 589 | */ |
590 | ||
591 | static _cgi_var_t * /* O - Variable pointer or NULL */ | |
592 | cgi_find_variable(const char *name) /* I - Name of variable */ | |
593 | { | |
594 | _cgi_var_t key; /* Search key */ | |
595 | ||
596 | ||
597 | if (form_count < 1 || name == NULL) | |
598 | return (NULL); | |
599 | ||
86c184ff | 600 | key.name = (char *)name; |
ef416fc2 | 601 | |
7e86f2f6 | 602 | return ((_cgi_var_t *)bsearch(&key, form_vars, (size_t)form_count, sizeof(_cgi_var_t), |
ef416fc2 | 603 | (int (*)(const void *, const void *))cgi_compare_variables)); |
604 | } | |
605 | ||
606 | ||
f8b3a85b MS |
607 | /* |
608 | * 'cgi_initialize_cookies()' - Initialize cookies. | |
609 | */ | |
610 | ||
611 | static void | |
612 | cgi_initialize_cookies(void) | |
613 | { | |
614 | const char *cookie; /* HTTP_COOKIE environment variable */ | |
615 | char name[128], /* Name string */ | |
616 | value[512], /* Value string */ | |
617 | *ptr; /* Pointer into name/value */ | |
618 | ||
619 | ||
620 | if ((cookie = getenv("HTTP_COOKIE")) == NULL) | |
621 | return; | |
622 | ||
623 | while (*cookie) | |
624 | { | |
fab4b71e MS |
625 | int skip = 0; /* Skip this cookie? */ |
626 | ||
f8b3a85b MS |
627 | /* |
628 | * Skip leading whitespace... | |
629 | */ | |
630 | ||
631 | while (isspace(*cookie & 255)) | |
632 | cookie ++; | |
633 | if (!*cookie) | |
634 | break; | |
635 | ||
636 | /* | |
637 | * Copy the name... | |
638 | */ | |
639 | ||
640 | for (ptr = name; *cookie && *cookie != '=';) | |
641 | if (ptr < (name + sizeof(name) - 1)) | |
fab4b71e | 642 | { |
f8b3a85b | 643 | *ptr++ = *cookie++; |
fab4b71e | 644 | } |
f8b3a85b | 645 | else |
fab4b71e MS |
646 | { |
647 | skip = 1; | |
648 | cookie ++; | |
649 | } | |
f8b3a85b MS |
650 | |
651 | if (*cookie != '=') | |
652 | break; | |
653 | ||
654 | *ptr = '\0'; | |
655 | cookie ++; | |
656 | ||
657 | /* | |
658 | * Then the value... | |
659 | */ | |
660 | ||
661 | if (*cookie == '\"') | |
662 | { | |
663 | for (cookie ++, ptr = value; *cookie && *cookie != '\"';) | |
664 | if (ptr < (value + sizeof(value) - 1)) | |
fab4b71e | 665 | { |
f8b3a85b | 666 | *ptr++ = *cookie++; |
fab4b71e | 667 | } |
f8b3a85b | 668 | else |
fab4b71e MS |
669 | { |
670 | skip = 1; | |
671 | cookie ++; | |
672 | } | |
f8b3a85b MS |
673 | |
674 | if (*cookie == '\"') | |
675 | cookie ++; | |
fab4b71e MS |
676 | else |
677 | skip = 1; | |
f8b3a85b MS |
678 | } |
679 | else | |
680 | { | |
681 | for (ptr = value; *cookie && *cookie != ';';) | |
682 | if (ptr < (value + sizeof(value) - 1)) | |
fab4b71e | 683 | { |
f8b3a85b | 684 | *ptr++ = *cookie++; |
fab4b71e | 685 | } |
f8b3a85b | 686 | else |
fab4b71e MS |
687 | { |
688 | skip = 1; | |
689 | cookie ++; | |
690 | } | |
f8b3a85b MS |
691 | } |
692 | ||
693 | if (*cookie == ';') | |
694 | cookie ++; | |
695 | else if (*cookie) | |
fab4b71e | 696 | skip = 1; |
f8b3a85b MS |
697 | |
698 | *ptr = '\0'; | |
699 | ||
700 | /* | |
701 | * Then add the cookie to an array as long as the name doesn't start with | |
702 | * "$"... | |
703 | */ | |
704 | ||
fab4b71e | 705 | if (name[0] != '$' && !skip) |
f8b3a85b MS |
706 | num_cookies = cupsAddOption(name, value, num_cookies, &cookies); |
707 | } | |
708 | } | |
709 | ||
710 | ||
ef416fc2 | 711 | /* |
712 | * 'cgi_initialize_get()' - Initialize form variables using the GET method. | |
713 | */ | |
714 | ||
715 | static int /* O - 1 if form data read */ | |
716 | cgi_initialize_get(void) | |
717 | { | |
718 | char *data; /* Pointer to form data string */ | |
719 | ||
720 | ||
ef416fc2 | 721 | /* |
722 | * Check to see if there is anything for us to read... | |
723 | */ | |
724 | ||
725 | data = getenv("QUERY_STRING"); | |
726 | if (data == NULL || strlen(data) == 0) | |
727 | return (0); | |
728 | ||
729 | /* | |
730 | * Parse it out and return... | |
731 | */ | |
732 | ||
733 | return (cgi_initialize_string(data)); | |
734 | } | |
735 | ||
736 | ||
737 | /* | |
f8b3a85b MS |
738 | * 'cgi_initialize_multipart()' - Initialize variables and file using the POST |
739 | * method. | |
ef416fc2 | 740 | * |
741 | * TODO: Update to support files > 2GB. | |
742 | */ | |
743 | ||
744 | static int /* O - 1 if form data was read */ | |
745 | cgi_initialize_multipart( | |
746 | const char *boundary) /* I - Boundary string */ | |
747 | { | |
748 | char line[10240], /* MIME header line */ | |
749 | name[1024], /* Form variable name */ | |
750 | filename[1024], /* Form filename */ | |
751 | mimetype[1024], /* MIME media type */ | |
752 | bstring[256], /* Boundary string to look for */ | |
753 | *ptr, /* Pointer into name/filename */ | |
754 | *end; /* End of buffer */ | |
755 | int ch, /* Character from file */ | |
7e86f2f6 MS |
756 | fd; /* Temporary file descriptor */ |
757 | size_t blen; /* Length of boundary string */ | |
ef416fc2 | 758 | |
759 | ||
ef416fc2 | 760 | /* |
761 | * Read multipart form data until we run out... | |
762 | */ | |
763 | ||
764 | name[0] = '\0'; | |
765 | filename[0] = '\0'; | |
766 | mimetype[0] = '\0'; | |
767 | ||
768 | snprintf(bstring, sizeof(bstring), "\r\n--%s", boundary); | |
769 | blen = strlen(bstring); | |
770 | ||
771 | while (fgets(line, sizeof(line), stdin)) | |
772 | { | |
773 | if (!strcmp(line, "\r\n")) | |
774 | { | |
775 | /* | |
776 | * End of headers, grab value... | |
777 | */ | |
778 | ||
779 | if (filename[0]) | |
780 | { | |
781 | /* | |
782 | * Read an embedded file... | |
783 | */ | |
784 | ||
785 | if (form_file) | |
786 | { | |
787 | /* | |
788 | * Remove previous file... | |
789 | */ | |
790 | ||
791 | cgi_unlink_file(); | |
792 | } | |
793 | ||
794 | /* | |
795 | * Allocate memory for the new file... | |
796 | */ | |
797 | ||
798 | if ((form_file = calloc(1, sizeof(cgi_file_t))) == NULL) | |
799 | return (0); | |
800 | ||
801 | form_file->name = strdup(name); | |
802 | form_file->filename = strdup(filename); | |
803 | form_file->mimetype = strdup(mimetype); | |
804 | ||
805 | fd = cupsTempFd(form_file->tempfile, sizeof(form_file->tempfile)); | |
806 | ||
807 | if (fd < 0) | |
808 | return (0); | |
809 | ||
810 | atexit(cgi_unlink_file); | |
811 | ||
812 | /* | |
813 | * Copy file data to the temp file... | |
814 | */ | |
88f9aafc | 815 | |
ef416fc2 | 816 | ptr = line; |
817 | ||
818 | while ((ch = getchar()) != EOF) | |
819 | { | |
7e86f2f6 | 820 | *ptr++ = (char)ch; |
ef416fc2 | 821 | |
7e86f2f6 | 822 | if ((size_t)(ptr - line) >= blen && !memcmp(ptr - blen, bstring, blen)) |
ef416fc2 | 823 | { |
824 | ptr -= blen; | |
825 | break; | |
826 | } | |
827 | ||
7e86f2f6 | 828 | if ((ptr - line - (int)blen) >= 8192) |
ef416fc2 | 829 | { |
830 | /* | |
831 | * Write out the first 8k of the buffer... | |
832 | */ | |
833 | ||
834 | write(fd, line, 8192); | |
07623986 | 835 | memmove(line, line + 8192, (size_t)(ptr - line - 8192)); |
ef416fc2 | 836 | ptr -= 8192; |
837 | } | |
838 | } | |
839 | ||
840 | /* | |
841 | * Write the rest of the data and close the temp file... | |
842 | */ | |
843 | ||
844 | if (ptr > line) | |
7e86f2f6 | 845 | write(fd, line, (size_t)(ptr - line)); |
ef416fc2 | 846 | |
847 | close(fd); | |
848 | } | |
849 | else | |
850 | { | |
851 | /* | |
852 | * Just get a form variable; the current code only handles | |
853 | * form values up to 10k in size... | |
854 | */ | |
855 | ||
856 | ptr = line; | |
857 | end = line + sizeof(line) - 1; | |
858 | ||
859 | while ((ch = getchar()) != EOF) | |
860 | { | |
861 | if (ptr < end) | |
7e86f2f6 | 862 | *ptr++ = (char)ch; |
ef416fc2 | 863 | |
7e86f2f6 | 864 | if ((size_t)(ptr - line) >= blen && !memcmp(ptr - blen, bstring, blen)) |
ef416fc2 | 865 | { |
866 | ptr -= blen; | |
867 | break; | |
868 | } | |
869 | } | |
870 | ||
871 | *ptr = '\0'; | |
872 | ||
873 | /* | |
874 | * Set the form variable... | |
875 | */ | |
876 | ||
877 | if ((ptr = strrchr(name, '-')) != NULL && isdigit(ptr[1] & 255)) | |
878 | { | |
879 | /* | |
880 | * Set a specific index in the array... | |
881 | */ | |
882 | ||
883 | *ptr++ = '\0'; | |
884 | if (line[0]) | |
885 | cgiSetArray(name, atoi(ptr) - 1, line); | |
886 | } | |
507c4adc | 887 | else if ((ptr = cgiGetVariable(name)) != NULL) |
ef416fc2 | 888 | { |
889 | /* | |
890 | * Add another element in the array... | |
891 | */ | |
892 | ||
507c4adc | 893 | free(ptr); |
ef416fc2 | 894 | cgiSetArray(name, cgiGetSize(name), line); |
895 | } | |
896 | else | |
897 | { | |
898 | /* | |
899 | * Just set the line... | |
900 | */ | |
901 | ||
902 | cgiSetVariable(name, line); | |
903 | } | |
904 | } | |
905 | ||
906 | /* | |
907 | * Read the rest of the current line... | |
908 | */ | |
909 | ||
910 | fgets(line, sizeof(line), stdin); | |
911 | ||
912 | /* | |
913 | * Clear the state vars... | |
914 | */ | |
915 | ||
916 | name[0] = '\0'; | |
917 | filename[0] = '\0'; | |
918 | mimetype[0] = '\0'; | |
919 | } | |
88f9aafc | 920 | else if (!_cups_strncasecmp(line, "Content-Disposition:", 20)) |
ef416fc2 | 921 | { |
922 | if ((ptr = strstr(line + 20, " name=\"")) != NULL) | |
923 | { | |
924 | strlcpy(name, ptr + 7, sizeof(name)); | |
925 | ||
926 | if ((ptr = strchr(name, '\"')) != NULL) | |
927 | *ptr = '\0'; | |
928 | } | |
929 | ||
930 | if ((ptr = strstr(line + 20, " filename=\"")) != NULL) | |
931 | { | |
932 | strlcpy(filename, ptr + 11, sizeof(filename)); | |
933 | ||
934 | if ((ptr = strchr(filename, '\"')) != NULL) | |
935 | *ptr = '\0'; | |
936 | } | |
937 | } | |
88f9aafc | 938 | else if (!_cups_strncasecmp(line, "Content-Type:", 13)) |
ef416fc2 | 939 | { |
940 | for (ptr = line + 13; isspace(*ptr & 255); ptr ++); | |
941 | ||
942 | strlcpy(mimetype, ptr, sizeof(mimetype)); | |
943 | ||
944 | for (ptr = mimetype + strlen(mimetype) - 1; | |
945 | ptr > mimetype && isspace(*ptr & 255); | |
946 | *ptr-- = '\0'); | |
947 | } | |
948 | } | |
949 | ||
950 | /* | |
951 | * Return 1 for "form data found"... | |
952 | */ | |
953 | ||
954 | return (1); | |
955 | } | |
956 | ||
957 | ||
958 | /* | |
959 | * 'cgi_initialize_post()' - Initialize variables using the POST method. | |
960 | */ | |
961 | ||
962 | static int /* O - 1 if form data was read */ | |
963 | cgi_initialize_post(void) | |
964 | { | |
7e86f2f6 MS |
965 | char *content_length, /* Length of input data (string) */ |
966 | *data; /* Pointer to form data string */ | |
967 | size_t length, /* Length of input data */ | |
968 | tbytes; /* Total number of bytes read */ | |
969 | ssize_t nbytes; /* Number of bytes read this read() */ | |
970 | int status; /* Return status */ | |
ef416fc2 | 971 | |
972 | ||
ef416fc2 | 973 | /* |
974 | * Check to see if there is anything for us to read... | |
975 | */ | |
976 | ||
977 | content_length = getenv("CONTENT_LENGTH"); | |
978 | if (content_length == NULL || atoi(content_length) <= 0) | |
979 | return (0); | |
980 | ||
981 | /* | |
982 | * Get the length of the input stream and allocate a buffer for it... | |
983 | */ | |
984 | ||
7e86f2f6 | 985 | length = (size_t)strtol(content_length, NULL, 10); |
ef416fc2 | 986 | data = malloc(length + 1); |
987 | ||
988 | if (data == NULL) | |
989 | return (0); | |
990 | ||
991 | /* | |
992 | * Read the data into the buffer... | |
993 | */ | |
994 | ||
7e86f2f6 MS |
995 | for (tbytes = 0; tbytes < length; tbytes += (size_t)nbytes) |
996 | if ((nbytes = read(0, data + tbytes, (size_t)(length - tbytes))) < 0) | |
080811b1 | 997 | { |
ef416fc2 | 998 | if (errno != EAGAIN) |
999 | { | |
1000 | free(data); | |
1001 | return (0); | |
1002 | } | |
080811b1 MS |
1003 | else |
1004 | nbytes = 0; | |
1005 | } | |
f11a948a MS |
1006 | else if (nbytes == 0) |
1007 | { | |
1008 | /* | |
1009 | * CUPS STR #3176: OpenBSD: Early end-of-file on POST data causes 100% CPU | |
1010 | * | |
1011 | * This should never happen, but does on OpenBSD. If we see early end-of- | |
1012 | * file, treat this as an error and process no data. | |
1013 | */ | |
1014 | ||
1015 | free(data); | |
1016 | return (0); | |
1017 | } | |
ef416fc2 | 1018 | |
1019 | data[length] = '\0'; | |
1020 | ||
1021 | /* | |
1022 | * Parse it out... | |
1023 | */ | |
1024 | ||
1025 | status = cgi_initialize_string(data); | |
1026 | ||
1027 | /* | |
1028 | * Free the data and return... | |
1029 | */ | |
1030 | ||
1031 | free(data); | |
1032 | ||
1033 | return (status); | |
1034 | } | |
1035 | ||
1036 | ||
1037 | /* | |
1038 | * 'cgi_initialize_string()' - Initialize form variables from a string. | |
1039 | */ | |
1040 | ||
1041 | static int /* O - 1 if form data was processed */ | |
1042 | cgi_initialize_string(const char *data) /* I - Form data string */ | |
1043 | { | |
1044 | int done; /* True if we're done reading a form variable */ | |
1045 | char *s, /* Pointer to current form string */ | |
1046 | ch, /* Temporary character */ | |
1047 | name[255], /* Name of form variable */ | |
507c4adc MS |
1048 | value[65536], /* Variable value */ |
1049 | *temp; /* Temporary pointer */ | |
ef416fc2 | 1050 | |
1051 | ||
1052 | /* | |
1053 | * Check input... | |
1054 | */ | |
1055 | ||
1056 | if (data == NULL) | |
1057 | return (0); | |
1058 | ||
1059 | /* | |
1060 | * Loop until we've read all the form data... | |
1061 | */ | |
1062 | ||
1063 | while (*data != '\0') | |
1064 | { | |
1065 | /* | |
1066 | * Get the variable name... | |
1067 | */ | |
1068 | ||
1069 | for (s = name; *data != '\0'; data ++) | |
1070 | if (*data == '=') | |
1071 | break; | |
1072 | else if (*data >= ' ' && s < (name + sizeof(name) - 1)) | |
1073 | *s++ = *data; | |
1074 | ||
1075 | *s = '\0'; | |
1076 | if (*data == '=') | |
1077 | data ++; | |
1078 | else | |
1079 | return (0); | |
1080 | ||
1081 | /* | |
1082 | * Read the variable value... | |
1083 | */ | |
1084 | ||
1085 | for (s = value, done = 0; !done && *data != '\0'; data ++) | |
1086 | switch (*data) | |
1087 | { | |
1088 | case '&' : /* End of data... */ | |
1089 | done = 1; | |
1090 | break; | |
1091 | ||
1092 | case '+' : /* Escaped space character */ | |
1093 | if (s < (value + sizeof(value) - 1)) | |
1094 | *s++ = ' '; | |
1095 | break; | |
1096 | ||
1097 | case '%' : /* Escaped control character */ | |
1098 | /* | |
1099 | * Read the hex code... | |
1100 | */ | |
1101 | ||
c7017ecc MS |
1102 | if (!isxdigit(data[1] & 255) || !isxdigit(data[2] & 255)) |
1103 | return (0); | |
1104 | ||
ef416fc2 | 1105 | if (s < (value + sizeof(value) - 1)) |
1106 | { | |
1107 | data ++; | |
1108 | ch = *data - '0'; | |
1109 | if (ch > 9) | |
1110 | ch -= 7; | |
7e86f2f6 | 1111 | *s = (char)(ch << 4); |
ef416fc2 | 1112 | |
1113 | data ++; | |
1114 | ch = *data - '0'; | |
1115 | if (ch > 9) | |
1116 | ch -= 7; | |
1117 | *s++ |= ch; | |
1118 | } | |
1119 | else | |
1120 | data += 2; | |
1121 | break; | |
1122 | ||
1123 | default : /* Other characters come straight through */ | |
1124 | if (*data >= ' ' && s < (value + sizeof(value) - 1)) | |
1125 | *s++ = *data; | |
1126 | break; | |
1127 | } | |
1128 | ||
1129 | *s = '\0'; /* nul terminate the string */ | |
1130 | ||
1131 | /* | |
1132 | * Remove trailing whitespace... | |
1133 | */ | |
1134 | ||
1135 | if (s > value) | |
1136 | s --; | |
1137 | ||
58dc1933 | 1138 | while (s >= value && isspace(*s & 255)) |
ef416fc2 | 1139 | *s-- = '\0'; |
1140 | ||
1141 | /* | |
1142 | * Add the string to the variable "database"... | |
1143 | */ | |
1144 | ||
1145 | if ((s = strrchr(name, '-')) != NULL && isdigit(s[1] & 255)) | |
1146 | { | |
1147 | *s++ = '\0'; | |
1148 | if (value[0]) | |
1149 | cgiSetArray(name, atoi(s) - 1, value); | |
1150 | } | |
507c4adc MS |
1151 | else if ((temp = cgiGetVariable(name)) != NULL) |
1152 | { | |
1153 | free(temp); | |
ef416fc2 | 1154 | cgiSetArray(name, cgiGetSize(name), value); |
507c4adc | 1155 | } |
ef416fc2 | 1156 | else |
1157 | cgiSetVariable(name, value); | |
1158 | } | |
1159 | ||
1160 | return (1); | |
1161 | } | |
1162 | ||
1163 | ||
1164 | /* | |
1165 | * 'cgi_passwd()' - Catch authentication requests and notify the server. | |
1166 | * | |
1167 | * This function sends a Status header and exits, forcing authentication | |
1168 | * for this request. | |
1169 | */ | |
1170 | ||
1171 | static const char * /* O - NULL (no return) */ | |
1172 | cgi_passwd(const char *prompt) /* I - Prompt (not used) */ | |
1173 | { | |
1174 | (void)prompt; | |
1175 | ||
f301802f | 1176 | fprintf(stderr, "DEBUG: cgi_passwd(prompt=\"%s\") called!\n", |
1177 | prompt ? prompt : "(null)"); | |
ef416fc2 | 1178 | |
1179 | /* | |
1180 | * Send a 401 (unauthorized) status to the server, so it can notify | |
1181 | * the client that authentication is required. | |
1182 | */ | |
1183 | ||
1184 | puts("Status: 401\n"); | |
1185 | exit(0); | |
1186 | ||
1187 | /* | |
1188 | * This code is never executed, but is present to satisfy the compiler. | |
1189 | */ | |
1190 | ||
1191 | return (NULL); | |
1192 | } | |
1193 | ||
1194 | ||
f8b3a85b MS |
1195 | /* |
1196 | * 'cgi_set_sid()' - Set the CUPS session ID. | |
1197 | */ | |
1198 | ||
1199 | static const char * /* O - New session ID */ | |
1200 | cgi_set_sid(void) | |
1201 | { | |
1202 | char buffer[512], /* SID data */ | |
1203 | sid[33]; /* SID string */ | |
f8b3a85b MS |
1204 | unsigned char sum[16]; /* MD5 sum */ |
1205 | const char *remote_addr, /* REMOTE_ADDR */ | |
1206 | *server_name, /* SERVER_NAME */ | |
1207 | *server_port; /* SERVER_PORT */ | |
b9ff93ce | 1208 | struct timeval curtime; /* Current time */ |
f8b3a85b MS |
1209 | |
1210 | ||
1211 | if ((remote_addr = getenv("REMOTE_ADDR")) == NULL) | |
1212 | remote_addr = "REMOTE_ADDR"; | |
1213 | if ((server_name = getenv("SERVER_NAME")) == NULL) | |
1214 | server_name = "SERVER_NAME"; | |
1215 | if ((server_port = getenv("SERVER_PORT")) == NULL) | |
1216 | server_port = "SERVER_PORT"; | |
1217 | ||
b9ff93ce MS |
1218 | gettimeofday(&curtime, NULL); |
1219 | CUPS_SRAND(curtime.tv_sec + curtime.tv_usec); | |
f8b3a85b MS |
1220 | snprintf(buffer, sizeof(buffer), "%s:%s:%s:%02X%02X%02X%02X%02X%02X%02X%02X", |
1221 | remote_addr, server_name, server_port, | |
1222 | (unsigned)CUPS_RAND() & 255, (unsigned)CUPS_RAND() & 255, | |
1223 | (unsigned)CUPS_RAND() & 255, (unsigned)CUPS_RAND() & 255, | |
1224 | (unsigned)CUPS_RAND() & 255, (unsigned)CUPS_RAND() & 255, | |
1225 | (unsigned)CUPS_RAND() & 255, (unsigned)CUPS_RAND() & 255); | |
7ec11630 | 1226 | cupsHashData("md5", (unsigned char *)buffer, strlen(buffer), sum, sizeof(sum)); |
88f9aafc | 1227 | |
7ec11630 | 1228 | cgiSetCookie(CUPS_SID, cupsHashString(sum, sizeof(sum), sid, sizeof(sid)), "/", NULL, 0, 0); |
f8b3a85b MS |
1229 | |
1230 | return (cupsGetOption(CUPS_SID, num_cookies, cookies)); | |
1231 | } | |
1232 | ||
1233 | ||
ef416fc2 | 1234 | /* |
1235 | * 'cgi_sort_variables()' - Sort all form variables for faster lookup. | |
1236 | */ | |
1237 | ||
1238 | static void | |
1239 | cgi_sort_variables(void) | |
1240 | { | |
ef416fc2 | 1241 | if (form_count < 2) |
1242 | return; | |
1243 | ||
7e86f2f6 | 1244 | qsort(form_vars, (size_t)form_count, sizeof(_cgi_var_t), |
ef416fc2 | 1245 | (int (*)(const void *, const void *))cgi_compare_variables); |
ef416fc2 | 1246 | } |
1247 | ||
1248 | ||
1249 | /* | |
1250 | * 'cgi_unlink_file()' - Remove the uploaded form. | |
1251 | */ | |
1252 | ||
1253 | static void | |
1254 | cgi_unlink_file(void) | |
1255 | { | |
1256 | if (form_file) | |
1257 | { | |
1258 | /* | |
1259 | * Remove the temporary file... | |
1260 | */ | |
1261 | ||
1262 | unlink(form_file->tempfile); | |
1263 | ||
1264 | /* | |
1265 | * Free memory used... | |
1266 | */ | |
1267 | ||
1268 | free(form_file->name); | |
1269 | free(form_file->filename); | |
1270 | free(form_file->mimetype); | |
1271 | free(form_file); | |
1272 | ||
1273 | form_file = NULL; | |
1274 | } | |
1275 | } |