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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 | * |
fab4b71e | 4 | * Copyright 2007-2015 by Apple Inc. |
7e86f2f6 | 5 | * Copyright 1997-2005 by Easy Software Products. |
ef416fc2 | 6 | * |
e3101897 | 7 | * Licensed under Apache License v2.0. See the file "LICENSE" for more information. |
7e86f2f6 MS |
8 | */ |
9 | ||
10 | /* | |
11 | * Include necessary headers... | |
ef416fc2 | 12 | */ |
13 | ||
14 | /*#define DEBUG*/ | |
15 | #include "cgi-private.h" | |
f8b3a85b | 16 | #include <cups/http.h> |
f8b3a85b MS |
17 | |
18 | ||
19 | /* | |
20 | * Session ID name | |
21 | */ | |
22 | ||
23 | #define CUPS_SID "org.cups.sid" | |
ef416fc2 | 24 | |
25 | ||
26 | /* | |
27 | * Data structure to hold all the CGI form variables and arrays... | |
28 | */ | |
29 | ||
30 | typedef struct /**** Form variable structure ****/ | |
31 | { | |
32 | const char *name; /* Name of variable */ | |
33 | int nvalues, /* Number of values */ | |
34 | avalues; /* Number of values allocated */ | |
35 | const char **values; /* Value(s) of variable */ | |
36 | } _cgi_var_t; | |
37 | ||
38 | ||
39 | /* | |
40 | * Local globals... | |
41 | */ | |
42 | ||
f8b3a85b MS |
43 | static int num_cookies = 0;/* Number of cookies */ |
44 | static cups_option_t *cookies = NULL;/* Cookies */ | |
ef416fc2 | 45 | static int form_count = 0, /* Form variable count */ |
46 | form_alloc = 0; /* Number of variables allocated */ | |
47 | static _cgi_var_t *form_vars = NULL; | |
48 | /* Form variables */ | |
49 | static cgi_file_t *form_file = NULL; | |
50 | /* Uploaded file */ | |
51 | ||
52 | ||
53 | /* | |
54 | * Local functions... | |
55 | */ | |
56 | ||
57 | static void cgi_add_variable(const char *name, int element, | |
58 | const char *value); | |
59 | static int cgi_compare_variables(const _cgi_var_t *v1, | |
60 | const _cgi_var_t *v2); | |
61 | static _cgi_var_t *cgi_find_variable(const char *name); | |
f8b3a85b | 62 | static void cgi_initialize_cookies(void); |
ef416fc2 | 63 | static int cgi_initialize_get(void); |
64 | static int cgi_initialize_multipart(const char *boundary); | |
65 | static int cgi_initialize_post(void); | |
66 | static int cgi_initialize_string(const char *data); | |
67 | static const char *cgi_passwd(const char *prompt); | |
f8b3a85b | 68 | static const char *cgi_set_sid(void); |
ef416fc2 | 69 | static void cgi_sort_variables(void); |
70 | static void cgi_unlink_file(void); | |
71 | ||
72 | ||
73 | /* | |
74 | * 'cgiCheckVariables()' - Check for the presence of "required" variables. | |
75 | * | |
76 | * Names may be separated by spaces and/or commas. | |
77 | */ | |
78 | ||
79 | int /* O - 1 if all variables present, 0 otherwise */ | |
80 | cgiCheckVariables(const char *names) /* I - Variables to look for */ | |
81 | { | |
82 | char name[255], /* Current variable name */ | |
83 | *s; /* Pointer in string */ | |
84 | const char *val; /* Value of variable */ | |
85 | int element; /* Array element number */ | |
86 | ||
87 | ||
88 | if (names == NULL) | |
89 | return (1); | |
90 | ||
91 | while (*names != '\0') | |
92 | { | |
93 | while (*names == ' ' || *names == ',') | |
94 | names ++; | |
95 | ||
96 | for (s = name; *names != '\0' && *names != ' ' && *names != ','; s ++, names ++) | |
97 | *s = *names; | |
98 | ||
99 | *s = 0; | |
100 | if (name[0] == '\0') | |
101 | break; | |
102 | ||
103 | if ((s = strrchr(name, '-')) != NULL) | |
104 | { | |
105 | *s = '\0'; | |
106 | element = atoi(s + 1) - 1; | |
107 | val = cgiGetArray(name, element); | |
108 | } | |
109 | else | |
110 | val = cgiGetVariable(name); | |
111 | ||
112 | if (val == NULL) | |
113 | return (0); | |
114 | ||
115 | if (*val == '\0') | |
116 | return (0); /* Can't be blank, either! */ | |
117 | } | |
118 | ||
119 | return (1); | |
120 | } | |
121 | ||
122 | ||
ef55b745 MS |
123 | /* |
124 | * 'cgiClearVariables()' - Clear all form variables. | |
125 | */ | |
126 | ||
127 | void | |
128 | cgiClearVariables(void) | |
129 | { | |
130 | int i, j; /* Looping vars */ | |
131 | _cgi_var_t *v; /* Current variable */ | |
132 | ||
133 | ||
82cc1f9a MS |
134 | fputs("DEBUG: cgiClearVariables called.\n", stderr); |
135 | ||
ef55b745 MS |
136 | for (v = form_vars, i = form_count; i > 0; v ++, i --) |
137 | { | |
138 | _cupsStrFree(v->name); | |
139 | for (j = 0; j < v->nvalues; j ++) | |
140 | if (v->values[j]) | |
141 | _cupsStrFree(v->values[j]); | |
142 | } | |
143 | ||
144 | form_count = 0; | |
145 | ||
146 | cgi_unlink_file(); | |
147 | } | |
148 | ||
149 | ||
ef416fc2 | 150 | /* |
f8b3a85b | 151 | * 'cgiGetArray()' - Get an element from a form array. |
ef416fc2 | 152 | */ |
153 | ||
154 | const char * /* O - Element value or NULL */ | |
155 | cgiGetArray(const char *name, /* I - Name of array variable */ | |
156 | int element) /* I - Element number (0 to N) */ | |
157 | { | |
158 | _cgi_var_t *var; /* Pointer to variable */ | |
159 | ||
160 | ||
161 | if ((var = cgi_find_variable(name)) == NULL) | |
162 | return (NULL); | |
163 | ||
ef416fc2 | 164 | if (element < 0 || element >= var->nvalues) |
165 | return (NULL); | |
166 | ||
ef55b745 | 167 | return (_cupsStrRetain(var->values[element])); |
ef416fc2 | 168 | } |
169 | ||
170 | ||
f8b3a85b MS |
171 | /* |
172 | * 'cgiGetCookie()' - Get a cookie value. | |
173 | */ | |
174 | ||
175 | const char * /* O - Value or NULL */ | |
176 | cgiGetCookie(const char *name) /* I - Name of cookie */ | |
177 | { | |
178 | return (cupsGetOption(name, num_cookies, cookies)); | |
179 | } | |
180 | ||
181 | ||
ef416fc2 | 182 | /* |
183 | * 'cgiGetFile()' - Get the file (if any) that was submitted in the form. | |
184 | */ | |
185 | ||
186 | const cgi_file_t * /* O - Attached file or NULL */ | |
187 | cgiGetFile(void) | |
188 | { | |
189 | return (form_file); | |
190 | } | |
191 | ||
192 | ||
193 | /* | |
194 | * 'cgiGetSize()' - Get the size of a form array value. | |
195 | */ | |
196 | ||
197 | int /* O - Number of elements */ | |
198 | cgiGetSize(const char *name) /* I - Name of variable */ | |
199 | { | |
200 | _cgi_var_t *var; /* Pointer to variable */ | |
201 | ||
202 | ||
203 | if ((var = cgi_find_variable(name)) == NULL) | |
204 | return (0); | |
205 | ||
206 | return (var->nvalues); | |
207 | } | |
208 | ||
209 | ||
210 | /* | |
f8b3a85b | 211 | * 'cgiGetVariable()' - Get a CGI variable from the database. |
ef416fc2 | 212 | * |
213 | * Returns NULL if the variable doesn't exist. If the variable is an | |
f8b3a85b | 214 | * array of values, returns the last element. |
ef416fc2 | 215 | */ |
216 | ||
217 | const char * /* O - Value of variable */ | |
218 | cgiGetVariable(const char *name) /* I - Name of variable */ | |
219 | { | |
220 | const _cgi_var_t *var; /* Returned variable */ | |
221 | ||
222 | ||
223 | var = cgi_find_variable(name); | |
224 | ||
225 | #ifdef DEBUG | |
226 | if (var == NULL) | |
ae71f5de | 227 | DEBUG_printf(("cgiGetVariable(\"%s\") is returning NULL...\n", name)); |
ef416fc2 | 228 | else |
ae71f5de MS |
229 | DEBUG_printf(("cgiGetVariable(\"%s\") is returning \"%s\"...\n", name, |
230 | var->values[var->nvalues - 1])); | |
ef416fc2 | 231 | #endif /* DEBUG */ |
232 | ||
ef55b745 | 233 | return ((var == NULL) ? NULL : _cupsStrRetain(var->values[var->nvalues - 1])); |
ef416fc2 | 234 | } |
235 | ||
236 | ||
237 | /* | |
f8b3a85b | 238 | * 'cgiInitialize()' - Initialize the CGI variable "database". |
ef416fc2 | 239 | */ |
240 | ||
241 | int /* O - Non-zero if there was form data */ | |
242 | cgiInitialize(void) | |
243 | { | |
f8b3a85b MS |
244 | const char *method, /* Form posting method */ |
245 | *content_type, /* Content-Type of post data */ | |
246 | *cups_sid_cookie, /* SID cookie */ | |
247 | *cups_sid_form; /* SID form variable */ | |
ef416fc2 | 248 | |
249 | ||
250 | /* | |
251 | * Setup a password callback for authentication... | |
252 | */ | |
253 | ||
254 | cupsSetPasswordCB(cgi_passwd); | |
255 | ||
80ca4592 | 256 | /* |
257 | * Set the locale so that times, etc. are formatted properly... | |
258 | */ | |
259 | ||
260 | setlocale(LC_ALL, ""); | |
261 | ||
ef416fc2 | 262 | #ifdef DEBUG |
263 | /* | |
264 | * Disable output buffering to find bugs... | |
265 | */ | |
266 | ||
267 | setbuf(stdout, NULL); | |
ef416fc2 | 268 | #endif /* DEBUG */ |
269 | ||
f8b3a85b MS |
270 | /* |
271 | * Get cookies... | |
272 | */ | |
273 | ||
274 | cgi_initialize_cookies(); | |
275 | ||
276 | if ((cups_sid_cookie = cgiGetCookie(CUPS_SID)) == NULL) | |
277 | { | |
278 | fputs("DEBUG: " CUPS_SID " cookie not found, initializing!\n", stderr); | |
279 | cups_sid_cookie = cgi_set_sid(); | |
280 | } | |
281 | ||
282 | fprintf(stderr, "DEBUG: " CUPS_SID " cookie is \"%s\"\n", cups_sid_cookie); | |
283 | ||
ef416fc2 | 284 | /* |
285 | * Get the request method (GET or POST)... | |
286 | */ | |
287 | ||
288 | method = getenv("REQUEST_METHOD"); | |
289 | content_type = getenv("CONTENT_TYPE"); | |
290 | if (!method) | |
291 | return (0); | |
292 | ||
293 | /* | |
294 | * Grab form data from the corresponding location... | |
295 | */ | |
296 | ||
88f9aafc | 297 | if (!_cups_strcasecmp(method, "GET")) |
ef416fc2 | 298 | return (cgi_initialize_get()); |
88f9aafc | 299 | else if (!_cups_strcasecmp(method, "POST") && content_type) |
ef416fc2 | 300 | { |
301 | const char *boundary = strstr(content_type, "boundary="); | |
302 | ||
303 | if (boundary) | |
304 | boundary += 9; | |
305 | ||
306 | if (content_type && !strncmp(content_type, "multipart/form-data; ", 21)) | |
f8b3a85b MS |
307 | { |
308 | if (!cgi_initialize_multipart(boundary)) | |
309 | return (0); | |
310 | } | |
311 | else if (!cgi_initialize_post()) | |
312 | return (0); | |
313 | ||
314 | if ((cups_sid_form = cgiGetVariable(CUPS_SID)) == NULL || | |
315 | strcmp(cups_sid_cookie, cups_sid_form)) | |
316 | { | |
317 | if (cups_sid_form) | |
318 | fprintf(stderr, "DEBUG: " CUPS_SID " form variable is \"%s\"\n", | |
319 | cups_sid_form); | |
320 | else | |
321 | fputs("DEBUG: " CUPS_SID " form variable is not present.\n", stderr); | |
322 | ||
323 | cgiClearVariables(); | |
324 | return (0); | |
325 | } | |
ef416fc2 | 326 | else |
f8b3a85b | 327 | return (1); |
ef416fc2 | 328 | } |
329 | else | |
330 | return (0); | |
331 | } | |
332 | ||
333 | ||
334 | /* | |
335 | * 'cgiIsPOST()' - Determine whether this page was POSTed. | |
336 | */ | |
337 | ||
338 | int /* O - 1 if POST, 0 if GET */ | |
339 | cgiIsPOST(void) | |
340 | { | |
341 | const char *method; /* REQUEST_METHOD environment variable */ | |
342 | ||
343 | ||
344 | if ((method = getenv("REQUEST_METHOD")) == NULL) | |
345 | return (0); | |
346 | else | |
347 | return (!strcmp(method, "POST")); | |
348 | } | |
349 | ||
350 | ||
351 | /* | |
352 | * 'cgiSetArray()' - Set array element N to the specified string. | |
353 | * | |
354 | * If the variable array is smaller than (element + 1), the intervening | |
355 | * elements are set to NULL. | |
356 | */ | |
357 | ||
358 | void | |
359 | cgiSetArray(const char *name, /* I - Name of variable */ | |
360 | int element, /* I - Element number (0 to N) */ | |
361 | const char *value) /* I - Value of variable */ | |
362 | { | |
363 | int i; /* Looping var */ | |
364 | _cgi_var_t *var; /* Returned variable */ | |
365 | ||
366 | ||
367 | if (name == NULL || value == NULL || element < 0 || element > 100000) | |
368 | return; | |
369 | ||
82cc1f9a MS |
370 | fprintf(stderr, "DEBUG: cgiSetArray: %s[%d]=\"%s\"\n", name, element, value); |
371 | ||
ef416fc2 | 372 | if ((var = cgi_find_variable(name)) == NULL) |
373 | { | |
374 | cgi_add_variable(name, element, value); | |
375 | cgi_sort_variables(); | |
376 | } | |
377 | else | |
378 | { | |
379 | if (element >= var->avalues) | |
380 | { | |
91c84a35 MS |
381 | const char **temp; /* Temporary pointer */ |
382 | ||
383 | temp = (const char **)realloc((void *)(var->values), | |
7e86f2f6 | 384 | sizeof(char *) * (size_t)(element + 16)); |
91c84a35 MS |
385 | if (!temp) |
386 | return; | |
387 | ||
ef416fc2 | 388 | var->avalues = element + 16; |
91c84a35 | 389 | var->values = temp; |
ef416fc2 | 390 | } |
391 | ||
392 | if (element >= var->nvalues) | |
393 | { | |
394 | for (i = var->nvalues; i < element; i ++) | |
395 | var->values[i] = NULL; | |
396 | ||
397 | var->nvalues = element + 1; | |
398 | } | |
399 | else if (var->values[element]) | |
ef55b745 | 400 | _cupsStrFree((char *)var->values[element]); |
ef416fc2 | 401 | |
ef55b745 | 402 | var->values[element] = _cupsStrAlloc(value); |
ef416fc2 | 403 | } |
404 | } | |
405 | ||
406 | ||
f8b3a85b MS |
407 | /* |
408 | * 'cgiSetCookie()' - Set a cookie value. | |
409 | */ | |
410 | ||
411 | void | |
412 | cgiSetCookie(const char *name, /* I - Name */ | |
413 | const char *value, /* I - Value */ | |
414 | const char *path, /* I - Path (typically "/") */ | |
415 | const char *domain, /* I - Domain name */ | |
416 | time_t expires, /* I - Expiration date (0 for session) */ | |
417 | int secure) /* I - Require SSL */ | |
418 | { | |
419 | num_cookies = cupsAddOption(name, value, num_cookies, &cookies); | |
420 | ||
421 | printf("Set-Cookie: %s=%s;", name, value); | |
422 | if (path) | |
85dda01c | 423 | printf(" path=%s;", path); |
f8b3a85b | 424 | if (domain) |
85dda01c | 425 | printf(" domain=%s;", domain); |
f8b3a85b MS |
426 | if (expires) |
427 | { | |
428 | char date[256]; /* Date string */ | |
429 | ||
85dda01c | 430 | printf(" expires=%s;", httpGetDateString2(expires, date, sizeof(date))); |
f8b3a85b MS |
431 | } |
432 | if (secure) | |
6c2b2b19 | 433 | puts(" httponly; secure;"); |
f8b3a85b | 434 | else |
6c2b2b19 | 435 | puts(" httponly;"); |
f8b3a85b MS |
436 | } |
437 | ||
438 | ||
ef416fc2 | 439 | /* |
440 | * 'cgiSetSize()' - Set the array size. | |
441 | */ | |
442 | ||
443 | void | |
444 | cgiSetSize(const char *name, /* I - Name of variable */ | |
445 | int size) /* I - Number of elements (0 to N) */ | |
446 | { | |
447 | int i; /* Looping var */ | |
448 | _cgi_var_t *var; /* Returned variable */ | |
449 | ||
450 | ||
451 | if (name == NULL || size < 0 || size > 100000) | |
452 | return; | |
453 | ||
454 | if ((var = cgi_find_variable(name)) == NULL) | |
455 | return; | |
456 | ||
457 | if (size >= var->avalues) | |
458 | { | |
91c84a35 MS |
459 | const char **temp; /* Temporary pointer */ |
460 | ||
461 | temp = (const char **)realloc((void *)(var->values), | |
7e86f2f6 | 462 | sizeof(char *) * (size_t)(size + 16)); |
91c84a35 MS |
463 | if (!temp) |
464 | return; | |
465 | ||
ef416fc2 | 466 | var->avalues = size + 16; |
91c84a35 | 467 | var->values = temp; |
ef416fc2 | 468 | } |
469 | ||
470 | if (size > var->nvalues) | |
471 | { | |
472 | for (i = var->nvalues; i < size; i ++) | |
473 | var->values[i] = NULL; | |
474 | } | |
475 | else if (size < var->nvalues) | |
476 | { | |
477 | for (i = size; i < var->nvalues; i ++) | |
478 | if (var->values[i]) | |
ef55b745 | 479 | _cupsStrFree((void *)(var->values[i])); |
ef416fc2 | 480 | } |
481 | ||
482 | var->nvalues = size; | |
483 | } | |
484 | ||
485 | ||
486 | /* | |
f8b3a85b | 487 | * 'cgiSetVariable()' - Set a CGI variable in the database. |
ef416fc2 | 488 | * |
489 | * If the variable is an array, this truncates the array to a single element. | |
490 | */ | |
491 | ||
492 | void | |
493 | cgiSetVariable(const char *name, /* I - Name of variable */ | |
494 | const char *value) /* I - Value of variable */ | |
495 | { | |
496 | int i; /* Looping var */ | |
497 | _cgi_var_t *var; /* Returned variable */ | |
498 | ||
499 | ||
500 | if (name == NULL || value == NULL) | |
501 | return; | |
502 | ||
82cc1f9a MS |
503 | fprintf(stderr, "cgiSetVariable: %s=\"%s\"\n", name, value); |
504 | ||
ef416fc2 | 505 | if ((var = cgi_find_variable(name)) == NULL) |
506 | { | |
507 | cgi_add_variable(name, 0, value); | |
508 | cgi_sort_variables(); | |
509 | } | |
510 | else | |
511 | { | |
512 | for (i = 0; i < var->nvalues; i ++) | |
513 | if (var->values[i]) | |
ef55b745 | 514 | _cupsStrFree((char *)var->values[i]); |
ef416fc2 | 515 | |
ef55b745 | 516 | var->values[0] = _cupsStrAlloc(value); |
ef416fc2 | 517 | var->nvalues = 1; |
518 | } | |
519 | } | |
520 | ||
521 | ||
522 | /* | |
523 | * 'cgi_add_variable()' - Add a form variable. | |
524 | */ | |
525 | ||
526 | static void | |
527 | cgi_add_variable(const char *name, /* I - Variable name */ | |
528 | int element, /* I - Array element number */ | |
529 | const char *value) /* I - Variable value */ | |
530 | { | |
91c84a35 | 531 | _cgi_var_t *var; /* New variable */ |
ef416fc2 | 532 | |
533 | ||
534 | if (name == NULL || value == NULL || element < 0 || element > 100000) | |
535 | return; | |
536 | ||
ae71f5de MS |
537 | DEBUG_printf(("cgi_add_variable: Adding variable \'%s\' with value " |
538 | "\'%s\'...\n", name, value)); | |
ef416fc2 | 539 | |
540 | if (form_count >= form_alloc) | |
541 | { | |
91c84a35 MS |
542 | _cgi_var_t *temp_vars; /* Temporary form pointer */ |
543 | ||
544 | ||
ef416fc2 | 545 | if (form_alloc == 0) |
91c84a35 | 546 | temp_vars = malloc(sizeof(_cgi_var_t) * 16); |
ef416fc2 | 547 | else |
7e86f2f6 | 548 | temp_vars = realloc(form_vars, (size_t)(form_alloc + 16) * sizeof(_cgi_var_t)); |
91c84a35 MS |
549 | |
550 | if (!temp_vars) | |
551 | return; | |
ef416fc2 | 552 | |
91c84a35 | 553 | form_vars = temp_vars; |
ef416fc2 | 554 | form_alloc += 16; |
555 | } | |
556 | ||
91c84a35 MS |
557 | var = form_vars + form_count; |
558 | ||
7e86f2f6 | 559 | if ((var->values = calloc((size_t)element + 1, sizeof(char *))) == NULL) |
91c84a35 MS |
560 | return; |
561 | ||
ef55b745 | 562 | var->name = _cupsStrAlloc(name); |
ef416fc2 | 563 | var->nvalues = element + 1; |
564 | var->avalues = element + 1; | |
ef55b745 | 565 | var->values[element] = _cupsStrAlloc(value); |
ef416fc2 | 566 | |
567 | form_count ++; | |
568 | } | |
569 | ||
570 | ||
571 | /* | |
572 | * 'cgi_compare_variables()' - Compare two variables. | |
573 | */ | |
574 | ||
575 | static int /* O - Result of comparison */ | |
576 | cgi_compare_variables( | |
577 | const _cgi_var_t *v1, /* I - First variable */ | |
578 | const _cgi_var_t *v2) /* I - Second variable */ | |
579 | { | |
88f9aafc | 580 | return (_cups_strcasecmp(v1->name, v2->name)); |
ef416fc2 | 581 | } |
582 | ||
583 | ||
584 | /* | |
f8b3a85b | 585 | * 'cgi_find_variable()' - Find a variable. |
ef416fc2 | 586 | */ |
587 | ||
588 | static _cgi_var_t * /* O - Variable pointer or NULL */ | |
589 | cgi_find_variable(const char *name) /* I - Name of variable */ | |
590 | { | |
591 | _cgi_var_t key; /* Search key */ | |
592 | ||
593 | ||
594 | if (form_count < 1 || name == NULL) | |
595 | return (NULL); | |
596 | ||
597 | key.name = name; | |
598 | ||
7e86f2f6 | 599 | return ((_cgi_var_t *)bsearch(&key, form_vars, (size_t)form_count, sizeof(_cgi_var_t), |
ef416fc2 | 600 | (int (*)(const void *, const void *))cgi_compare_variables)); |
601 | } | |
602 | ||
603 | ||
f8b3a85b MS |
604 | /* |
605 | * 'cgi_initialize_cookies()' - Initialize cookies. | |
606 | */ | |
607 | ||
608 | static void | |
609 | cgi_initialize_cookies(void) | |
610 | { | |
611 | const char *cookie; /* HTTP_COOKIE environment variable */ | |
612 | char name[128], /* Name string */ | |
613 | value[512], /* Value string */ | |
614 | *ptr; /* Pointer into name/value */ | |
615 | ||
616 | ||
617 | if ((cookie = getenv("HTTP_COOKIE")) == NULL) | |
618 | return; | |
619 | ||
620 | while (*cookie) | |
621 | { | |
fab4b71e MS |
622 | int skip = 0; /* Skip this cookie? */ |
623 | ||
f8b3a85b MS |
624 | /* |
625 | * Skip leading whitespace... | |
626 | */ | |
627 | ||
628 | while (isspace(*cookie & 255)) | |
629 | cookie ++; | |
630 | if (!*cookie) | |
631 | break; | |
632 | ||
633 | /* | |
634 | * Copy the name... | |
635 | */ | |
636 | ||
637 | for (ptr = name; *cookie && *cookie != '=';) | |
638 | if (ptr < (name + sizeof(name) - 1)) | |
fab4b71e | 639 | { |
f8b3a85b | 640 | *ptr++ = *cookie++; |
fab4b71e | 641 | } |
f8b3a85b | 642 | else |
fab4b71e MS |
643 | { |
644 | skip = 1; | |
645 | cookie ++; | |
646 | } | |
f8b3a85b MS |
647 | |
648 | if (*cookie != '=') | |
649 | break; | |
650 | ||
651 | *ptr = '\0'; | |
652 | cookie ++; | |
653 | ||
654 | /* | |
655 | * Then the value... | |
656 | */ | |
657 | ||
658 | if (*cookie == '\"') | |
659 | { | |
660 | for (cookie ++, ptr = value; *cookie && *cookie != '\"';) | |
661 | if (ptr < (value + sizeof(value) - 1)) | |
fab4b71e | 662 | { |
f8b3a85b | 663 | *ptr++ = *cookie++; |
fab4b71e | 664 | } |
f8b3a85b | 665 | else |
fab4b71e MS |
666 | { |
667 | skip = 1; | |
668 | cookie ++; | |
669 | } | |
f8b3a85b MS |
670 | |
671 | if (*cookie == '\"') | |
672 | cookie ++; | |
fab4b71e MS |
673 | else |
674 | skip = 1; | |
f8b3a85b MS |
675 | } |
676 | else | |
677 | { | |
678 | for (ptr = value; *cookie && *cookie != ';';) | |
679 | if (ptr < (value + sizeof(value) - 1)) | |
fab4b71e | 680 | { |
f8b3a85b | 681 | *ptr++ = *cookie++; |
fab4b71e | 682 | } |
f8b3a85b | 683 | else |
fab4b71e MS |
684 | { |
685 | skip = 1; | |
686 | cookie ++; | |
687 | } | |
f8b3a85b MS |
688 | } |
689 | ||
690 | if (*cookie == ';') | |
691 | cookie ++; | |
692 | else if (*cookie) | |
fab4b71e | 693 | skip = 1; |
f8b3a85b MS |
694 | |
695 | *ptr = '\0'; | |
696 | ||
697 | /* | |
698 | * Then add the cookie to an array as long as the name doesn't start with | |
699 | * "$"... | |
700 | */ | |
701 | ||
fab4b71e | 702 | if (name[0] != '$' && !skip) |
f8b3a85b MS |
703 | num_cookies = cupsAddOption(name, value, num_cookies, &cookies); |
704 | } | |
705 | } | |
706 | ||
707 | ||
ef416fc2 | 708 | /* |
709 | * 'cgi_initialize_get()' - Initialize form variables using the GET method. | |
710 | */ | |
711 | ||
712 | static int /* O - 1 if form data read */ | |
713 | cgi_initialize_get(void) | |
714 | { | |
715 | char *data; /* Pointer to form data string */ | |
716 | ||
717 | ||
ae71f5de | 718 | DEBUG_puts("cgi_initialize_get: Initializing variables using GET method..."); |
ef416fc2 | 719 | |
720 | /* | |
721 | * Check to see if there is anything for us to read... | |
722 | */ | |
723 | ||
724 | data = getenv("QUERY_STRING"); | |
725 | if (data == NULL || strlen(data) == 0) | |
726 | return (0); | |
727 | ||
728 | /* | |
729 | * Parse it out and return... | |
730 | */ | |
731 | ||
732 | return (cgi_initialize_string(data)); | |
733 | } | |
734 | ||
735 | ||
736 | /* | |
f8b3a85b MS |
737 | * 'cgi_initialize_multipart()' - Initialize variables and file using the POST |
738 | * method. | |
ef416fc2 | 739 | * |
740 | * TODO: Update to support files > 2GB. | |
741 | */ | |
742 | ||
743 | static int /* O - 1 if form data was read */ | |
744 | cgi_initialize_multipart( | |
745 | const char *boundary) /* I - Boundary string */ | |
746 | { | |
747 | char line[10240], /* MIME header line */ | |
748 | name[1024], /* Form variable name */ | |
749 | filename[1024], /* Form filename */ | |
750 | mimetype[1024], /* MIME media type */ | |
751 | bstring[256], /* Boundary string to look for */ | |
752 | *ptr, /* Pointer into name/filename */ | |
753 | *end; /* End of buffer */ | |
754 | int ch, /* Character from file */ | |
7e86f2f6 MS |
755 | fd; /* Temporary file descriptor */ |
756 | size_t blen; /* Length of boundary string */ | |
ef416fc2 | 757 | |
758 | ||
759 | DEBUG_printf(("cgi_initialize_multipart(boundary=\"%s\")\n", boundary)); | |
760 | ||
761 | /* | |
762 | * Read multipart form data until we run out... | |
763 | */ | |
764 | ||
765 | name[0] = '\0'; | |
766 | filename[0] = '\0'; | |
767 | mimetype[0] = '\0'; | |
768 | ||
769 | snprintf(bstring, sizeof(bstring), "\r\n--%s", boundary); | |
770 | blen = strlen(bstring); | |
771 | ||
772 | while (fgets(line, sizeof(line), stdin)) | |
773 | { | |
774 | if (!strcmp(line, "\r\n")) | |
775 | { | |
776 | /* | |
777 | * End of headers, grab value... | |
778 | */ | |
779 | ||
780 | if (filename[0]) | |
781 | { | |
782 | /* | |
783 | * Read an embedded file... | |
784 | */ | |
785 | ||
786 | if (form_file) | |
787 | { | |
788 | /* | |
789 | * Remove previous file... | |
790 | */ | |
791 | ||
792 | cgi_unlink_file(); | |
793 | } | |
794 | ||
795 | /* | |
796 | * Allocate memory for the new file... | |
797 | */ | |
798 | ||
799 | if ((form_file = calloc(1, sizeof(cgi_file_t))) == NULL) | |
800 | return (0); | |
801 | ||
802 | form_file->name = strdup(name); | |
803 | form_file->filename = strdup(filename); | |
804 | form_file->mimetype = strdup(mimetype); | |
805 | ||
806 | fd = cupsTempFd(form_file->tempfile, sizeof(form_file->tempfile)); | |
807 | ||
808 | if (fd < 0) | |
809 | return (0); | |
810 | ||
811 | atexit(cgi_unlink_file); | |
812 | ||
813 | /* | |
814 | * Copy file data to the temp file... | |
815 | */ | |
88f9aafc | 816 | |
ef416fc2 | 817 | ptr = line; |
818 | ||
819 | while ((ch = getchar()) != EOF) | |
820 | { | |
7e86f2f6 | 821 | *ptr++ = (char)ch; |
ef416fc2 | 822 | |
7e86f2f6 | 823 | if ((size_t)(ptr - line) >= blen && !memcmp(ptr - blen, bstring, blen)) |
ef416fc2 | 824 | { |
825 | ptr -= blen; | |
826 | break; | |
827 | } | |
828 | ||
7e86f2f6 | 829 | if ((ptr - line - (int)blen) >= 8192) |
ef416fc2 | 830 | { |
831 | /* | |
832 | * Write out the first 8k of the buffer... | |
833 | */ | |
834 | ||
835 | write(fd, line, 8192); | |
07623986 | 836 | memmove(line, line + 8192, (size_t)(ptr - line - 8192)); |
ef416fc2 | 837 | ptr -= 8192; |
838 | } | |
839 | } | |
840 | ||
841 | /* | |
842 | * Write the rest of the data and close the temp file... | |
843 | */ | |
844 | ||
845 | if (ptr > line) | |
7e86f2f6 | 846 | write(fd, line, (size_t)(ptr - line)); |
ef416fc2 | 847 | |
848 | close(fd); | |
849 | } | |
850 | else | |
851 | { | |
852 | /* | |
853 | * Just get a form variable; the current code only handles | |
854 | * form values up to 10k in size... | |
855 | */ | |
856 | ||
857 | ptr = line; | |
858 | end = line + sizeof(line) - 1; | |
859 | ||
860 | while ((ch = getchar()) != EOF) | |
861 | { | |
862 | if (ptr < end) | |
7e86f2f6 | 863 | *ptr++ = (char)ch; |
ef416fc2 | 864 | |
7e86f2f6 | 865 | if ((size_t)(ptr - line) >= blen && !memcmp(ptr - blen, bstring, blen)) |
ef416fc2 | 866 | { |
867 | ptr -= blen; | |
868 | break; | |
869 | } | |
870 | } | |
871 | ||
872 | *ptr = '\0'; | |
873 | ||
874 | /* | |
875 | * Set the form variable... | |
876 | */ | |
877 | ||
878 | if ((ptr = strrchr(name, '-')) != NULL && isdigit(ptr[1] & 255)) | |
879 | { | |
880 | /* | |
881 | * Set a specific index in the array... | |
882 | */ | |
883 | ||
884 | *ptr++ = '\0'; | |
885 | if (line[0]) | |
886 | cgiSetArray(name, atoi(ptr) - 1, line); | |
887 | } | |
888 | else if (cgiGetVariable(name)) | |
889 | { | |
890 | /* | |
891 | * Add another element in the array... | |
892 | */ | |
893 | ||
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 | ||
ae71f5de | 973 | DEBUG_puts("cgi_initialize_post: Initializing variables using POST method..."); |
ef416fc2 | 974 | |
975 | /* | |
976 | * Check to see if there is anything for us to read... | |
977 | */ | |
978 | ||
979 | content_length = getenv("CONTENT_LENGTH"); | |
980 | if (content_length == NULL || atoi(content_length) <= 0) | |
981 | return (0); | |
982 | ||
983 | /* | |
984 | * Get the length of the input stream and allocate a buffer for it... | |
985 | */ | |
986 | ||
7e86f2f6 | 987 | length = (size_t)strtol(content_length, NULL, 10); |
ef416fc2 | 988 | data = malloc(length + 1); |
989 | ||
990 | if (data == NULL) | |
991 | return (0); | |
992 | ||
993 | /* | |
994 | * Read the data into the buffer... | |
995 | */ | |
996 | ||
7e86f2f6 MS |
997 | for (tbytes = 0; tbytes < length; tbytes += (size_t)nbytes) |
998 | if ((nbytes = read(0, data + tbytes, (size_t)(length - tbytes))) < 0) | |
080811b1 | 999 | { |
ef416fc2 | 1000 | if (errno != EAGAIN) |
1001 | { | |
1002 | free(data); | |
1003 | return (0); | |
1004 | } | |
080811b1 MS |
1005 | else |
1006 | nbytes = 0; | |
1007 | } | |
f11a948a MS |
1008 | else if (nbytes == 0) |
1009 | { | |
1010 | /* | |
1011 | * CUPS STR #3176: OpenBSD: Early end-of-file on POST data causes 100% CPU | |
1012 | * | |
1013 | * This should never happen, but does on OpenBSD. If we see early end-of- | |
1014 | * file, treat this as an error and process no data. | |
1015 | */ | |
1016 | ||
1017 | free(data); | |
1018 | return (0); | |
1019 | } | |
ef416fc2 | 1020 | |
1021 | data[length] = '\0'; | |
1022 | ||
1023 | /* | |
1024 | * Parse it out... | |
1025 | */ | |
1026 | ||
1027 | status = cgi_initialize_string(data); | |
1028 | ||
1029 | /* | |
1030 | * Free the data and return... | |
1031 | */ | |
1032 | ||
1033 | free(data); | |
1034 | ||
1035 | return (status); | |
1036 | } | |
1037 | ||
1038 | ||
1039 | /* | |
1040 | * 'cgi_initialize_string()' - Initialize form variables from a string. | |
1041 | */ | |
1042 | ||
1043 | static int /* O - 1 if form data was processed */ | |
1044 | cgi_initialize_string(const char *data) /* I - Form data string */ | |
1045 | { | |
1046 | int done; /* True if we're done reading a form variable */ | |
1047 | char *s, /* Pointer to current form string */ | |
1048 | ch, /* Temporary character */ | |
1049 | name[255], /* Name of form variable */ | |
f8b3a85b | 1050 | value[65536]; /* Variable value */ |
ef416fc2 | 1051 | |
1052 | ||
1053 | /* | |
1054 | * Check input... | |
1055 | */ | |
1056 | ||
1057 | if (data == NULL) | |
1058 | return (0); | |
1059 | ||
1060 | /* | |
1061 | * Loop until we've read all the form data... | |
1062 | */ | |
1063 | ||
1064 | while (*data != '\0') | |
1065 | { | |
1066 | /* | |
1067 | * Get the variable name... | |
1068 | */ | |
1069 | ||
1070 | for (s = name; *data != '\0'; data ++) | |
1071 | if (*data == '=') | |
1072 | break; | |
1073 | else if (*data >= ' ' && s < (name + sizeof(name) - 1)) | |
1074 | *s++ = *data; | |
1075 | ||
1076 | *s = '\0'; | |
1077 | if (*data == '=') | |
1078 | data ++; | |
1079 | else | |
1080 | return (0); | |
1081 | ||
1082 | /* | |
1083 | * Read the variable value... | |
1084 | */ | |
1085 | ||
1086 | for (s = value, done = 0; !done && *data != '\0'; data ++) | |
1087 | switch (*data) | |
1088 | { | |
1089 | case '&' : /* End of data... */ | |
1090 | done = 1; | |
1091 | break; | |
1092 | ||
1093 | case '+' : /* Escaped space character */ | |
1094 | if (s < (value + sizeof(value) - 1)) | |
1095 | *s++ = ' '; | |
1096 | break; | |
1097 | ||
1098 | case '%' : /* Escaped control character */ | |
1099 | /* | |
1100 | * Read the hex code... | |
1101 | */ | |
1102 | ||
c7017ecc MS |
1103 | if (!isxdigit(data[1] & 255) || !isxdigit(data[2] & 255)) |
1104 | return (0); | |
1105 | ||
ef416fc2 | 1106 | if (s < (value + sizeof(value) - 1)) |
1107 | { | |
1108 | data ++; | |
1109 | ch = *data - '0'; | |
1110 | if (ch > 9) | |
1111 | ch -= 7; | |
7e86f2f6 | 1112 | *s = (char)(ch << 4); |
ef416fc2 | 1113 | |
1114 | data ++; | |
1115 | ch = *data - '0'; | |
1116 | if (ch > 9) | |
1117 | ch -= 7; | |
1118 | *s++ |= ch; | |
1119 | } | |
1120 | else | |
1121 | data += 2; | |
1122 | break; | |
1123 | ||
1124 | default : /* Other characters come straight through */ | |
1125 | if (*data >= ' ' && s < (value + sizeof(value) - 1)) | |
1126 | *s++ = *data; | |
1127 | break; | |
1128 | } | |
1129 | ||
1130 | *s = '\0'; /* nul terminate the string */ | |
1131 | ||
1132 | /* | |
1133 | * Remove trailing whitespace... | |
1134 | */ | |
1135 | ||
1136 | if (s > value) | |
1137 | s --; | |
1138 | ||
58dc1933 | 1139 | while (s >= value && isspace(*s & 255)) |
ef416fc2 | 1140 | *s-- = '\0'; |
1141 | ||
1142 | /* | |
1143 | * Add the string to the variable "database"... | |
1144 | */ | |
1145 | ||
1146 | if ((s = strrchr(name, '-')) != NULL && isdigit(s[1] & 255)) | |
1147 | { | |
1148 | *s++ = '\0'; | |
1149 | if (value[0]) | |
1150 | cgiSetArray(name, atoi(s) - 1, value); | |
1151 | } | |
1152 | else if (cgiGetVariable(name) != NULL) | |
1153 | cgiSetArray(name, cgiGetSize(name), value); | |
1154 | else | |
1155 | cgiSetVariable(name, value); | |
1156 | } | |
1157 | ||
1158 | return (1); | |
1159 | } | |
1160 | ||
1161 | ||
1162 | /* | |
1163 | * 'cgi_passwd()' - Catch authentication requests and notify the server. | |
1164 | * | |
1165 | * This function sends a Status header and exits, forcing authentication | |
1166 | * for this request. | |
1167 | */ | |
1168 | ||
1169 | static const char * /* O - NULL (no return) */ | |
1170 | cgi_passwd(const char *prompt) /* I - Prompt (not used) */ | |
1171 | { | |
1172 | (void)prompt; | |
1173 | ||
f301802f | 1174 | fprintf(stderr, "DEBUG: cgi_passwd(prompt=\"%s\") called!\n", |
1175 | prompt ? prompt : "(null)"); | |
ef416fc2 | 1176 | |
1177 | /* | |
1178 | * Send a 401 (unauthorized) status to the server, so it can notify | |
1179 | * the client that authentication is required. | |
1180 | */ | |
1181 | ||
1182 | puts("Status: 401\n"); | |
1183 | exit(0); | |
1184 | ||
1185 | /* | |
1186 | * This code is never executed, but is present to satisfy the compiler. | |
1187 | */ | |
1188 | ||
1189 | return (NULL); | |
1190 | } | |
1191 | ||
1192 | ||
f8b3a85b MS |
1193 | /* |
1194 | * 'cgi_set_sid()' - Set the CUPS session ID. | |
1195 | */ | |
1196 | ||
1197 | static const char * /* O - New session ID */ | |
1198 | cgi_set_sid(void) | |
1199 | { | |
1200 | char buffer[512], /* SID data */ | |
1201 | sid[33]; /* SID string */ | |
f8b3a85b MS |
1202 | unsigned char sum[16]; /* MD5 sum */ |
1203 | const char *remote_addr, /* REMOTE_ADDR */ | |
1204 | *server_name, /* SERVER_NAME */ | |
1205 | *server_port; /* SERVER_PORT */ | |
1206 | ||
1207 | ||
1208 | if ((remote_addr = getenv("REMOTE_ADDR")) == NULL) | |
1209 | remote_addr = "REMOTE_ADDR"; | |
1210 | if ((server_name = getenv("SERVER_NAME")) == NULL) | |
1211 | server_name = "SERVER_NAME"; | |
1212 | if ((server_port = getenv("SERVER_PORT")) == NULL) | |
1213 | server_port = "SERVER_PORT"; | |
1214 | ||
1215 | CUPS_SRAND(time(NULL)); | |
1216 | snprintf(buffer, sizeof(buffer), "%s:%s:%s:%02X%02X%02X%02X%02X%02X%02X%02X", | |
1217 | remote_addr, server_name, server_port, | |
1218 | (unsigned)CUPS_RAND() & 255, (unsigned)CUPS_RAND() & 255, | |
1219 | (unsigned)CUPS_RAND() & 255, (unsigned)CUPS_RAND() & 255, | |
1220 | (unsigned)CUPS_RAND() & 255, (unsigned)CUPS_RAND() & 255, | |
1221 | (unsigned)CUPS_RAND() & 255, (unsigned)CUPS_RAND() & 255); | |
7ec11630 | 1222 | cupsHashData("md5", (unsigned char *)buffer, strlen(buffer), sum, sizeof(sum)); |
88f9aafc | 1223 | |
7ec11630 | 1224 | cgiSetCookie(CUPS_SID, cupsHashString(sum, sizeof(sum), sid, sizeof(sid)), "/", NULL, 0, 0); |
f8b3a85b MS |
1225 | |
1226 | return (cupsGetOption(CUPS_SID, num_cookies, cookies)); | |
1227 | } | |
1228 | ||
1229 | ||
ef416fc2 | 1230 | /* |
1231 | * 'cgi_sort_variables()' - Sort all form variables for faster lookup. | |
1232 | */ | |
1233 | ||
1234 | static void | |
1235 | cgi_sort_variables(void) | |
1236 | { | |
1237 | #ifdef DEBUG | |
1238 | int i; | |
1239 | ||
1240 | ||
ae71f5de | 1241 | DEBUG_puts("cgi_sort_variables: Sorting variables..."); |
ef416fc2 | 1242 | #endif /* DEBUG */ |
1243 | ||
1244 | if (form_count < 2) | |
1245 | return; | |
1246 | ||
7e86f2f6 | 1247 | qsort(form_vars, (size_t)form_count, sizeof(_cgi_var_t), |
ef416fc2 | 1248 | (int (*)(const void *, const void *))cgi_compare_variables); |
1249 | ||
1250 | #ifdef DEBUG | |
ae71f5de | 1251 | DEBUG_puts("cgi_sort_variables: Sorted variable list is:"); |
ef416fc2 | 1252 | for (i = 0; i < form_count; i ++) |
ae71f5de MS |
1253 | DEBUG_printf(("cgi_sort_variables: %d: %s (%d) = \"%s\" ...\n", i, |
1254 | form_vars[i].name, form_vars[i].nvalues, | |
1255 | form_vars[i].values[0])); | |
ef416fc2 | 1256 | #endif /* DEBUG */ |
1257 | } | |
1258 | ||
1259 | ||
1260 | /* | |
1261 | * 'cgi_unlink_file()' - Remove the uploaded form. | |
1262 | */ | |
1263 | ||
1264 | static void | |
1265 | cgi_unlink_file(void) | |
1266 | { | |
1267 | if (form_file) | |
1268 | { | |
1269 | /* | |
1270 | * Remove the temporary file... | |
1271 | */ | |
1272 | ||
1273 | unlink(form_file->tempfile); | |
1274 | ||
1275 | /* | |
1276 | * Free memory used... | |
1277 | */ | |
1278 | ||
1279 | free(form_file->name); | |
1280 | free(form_file->filename); | |
1281 | free(form_file->mimetype); | |
1282 | free(form_file); | |
1283 | ||
1284 | form_file = NULL; | |
1285 | } | |
1286 | } |