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ef416fc2 | 1 | /* |
75bd9771 | 2 | * "$Id: var.c 7460 2008-04-16 02:19:54Z mike $" |
ef416fc2 | 3 | * |
4 | * CGI form variable and array functions. | |
5 | * | |
b9faaae1 | 6 | * Copyright 2007-2009 by Apple Inc. |
ef416fc2 | 7 | * Copyright 1997-2005 by Easy Software Products. |
8 | * | |
9 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 10 | * property of Apple Inc. and are protected by Federal copyright |
11 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
12 | * which should have been included with this file. If this file is | |
13 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
ef416fc2 | 14 | * |
15 | * Contents: | |
16 | * | |
17 | * cgiCheckVariables() - Check for the presence of "required" variables. | |
18 | * cgiGetArray() - Get an element from a form array... | |
19 | * cgiGetFile() - Get the file (if any) that was submitted in the form. | |
20 | * cgiGetSize() - Get the size of a form array value. | |
21 | * cgiGetVariable() - Get a CGI variable from the database... | |
22 | * cgiInitialize() - Initialize the CGI variable "database"... | |
23 | * cgiIsPOST() - Determine whether this page was POSTed. | |
24 | * cgiSetArray() - Set array element N to the specified string. | |
25 | * cgiSetSize() - Set the array size. | |
26 | * cgiSetVariable() - Set a CGI variable in the database... | |
27 | * cgi_add_variable() - Add a form variable. | |
28 | * cgi_compare_variables() - Compare two variables. | |
29 | * cgi_find_variable() - Find a variable... | |
30 | * cgi_initialize_get() - Initialize form variables using the GET method. | |
31 | * cgi_initialize_multipart() - Initialize variables and file using the POST method. | |
32 | * cgi_initialize_post() - Initialize variables using the POST method. | |
33 | * cgi_initialize_string() - Initialize form variables from a string. | |
34 | * cgi_passwd() - Catch authentication requests and notify the server. | |
35 | * cgi_sort_variables() - Sort all form variables for faster lookup. | |
36 | * cgi_unlink_file() - Remove the uploaded form. | |
37 | */ | |
38 | ||
39 | /*#define DEBUG*/ | |
40 | #include "cgi-private.h" | |
41 | #include <errno.h> | |
42 | ||
43 | ||
44 | /* | |
45 | * Data structure to hold all the CGI form variables and arrays... | |
46 | */ | |
47 | ||
48 | typedef struct /**** Form variable structure ****/ | |
49 | { | |
50 | const char *name; /* Name of variable */ | |
51 | int nvalues, /* Number of values */ | |
52 | avalues; /* Number of values allocated */ | |
53 | const char **values; /* Value(s) of variable */ | |
54 | } _cgi_var_t; | |
55 | ||
56 | ||
57 | /* | |
58 | * Local globals... | |
59 | */ | |
60 | ||
61 | static int form_count = 0, /* Form variable count */ | |
62 | form_alloc = 0; /* Number of variables allocated */ | |
63 | static _cgi_var_t *form_vars = NULL; | |
64 | /* Form variables */ | |
65 | static cgi_file_t *form_file = NULL; | |
66 | /* Uploaded file */ | |
67 | ||
68 | ||
69 | /* | |
70 | * Local functions... | |
71 | */ | |
72 | ||
73 | static void cgi_add_variable(const char *name, int element, | |
74 | const char *value); | |
75 | static int cgi_compare_variables(const _cgi_var_t *v1, | |
76 | const _cgi_var_t *v2); | |
77 | static _cgi_var_t *cgi_find_variable(const char *name); | |
78 | static int cgi_initialize_get(void); | |
79 | static int cgi_initialize_multipart(const char *boundary); | |
80 | static int cgi_initialize_post(void); | |
81 | static int cgi_initialize_string(const char *data); | |
82 | static const char *cgi_passwd(const char *prompt); | |
83 | static void cgi_sort_variables(void); | |
84 | static void cgi_unlink_file(void); | |
85 | ||
86 | ||
87 | /* | |
88 | * 'cgiCheckVariables()' - Check for the presence of "required" variables. | |
89 | * | |
90 | * Names may be separated by spaces and/or commas. | |
91 | */ | |
92 | ||
93 | int /* O - 1 if all variables present, 0 otherwise */ | |
94 | cgiCheckVariables(const char *names) /* I - Variables to look for */ | |
95 | { | |
96 | char name[255], /* Current variable name */ | |
97 | *s; /* Pointer in string */ | |
98 | const char *val; /* Value of variable */ | |
99 | int element; /* Array element number */ | |
100 | ||
101 | ||
102 | if (names == NULL) | |
103 | return (1); | |
104 | ||
105 | while (*names != '\0') | |
106 | { | |
107 | while (*names == ' ' || *names == ',') | |
108 | names ++; | |
109 | ||
110 | for (s = name; *names != '\0' && *names != ' ' && *names != ','; s ++, names ++) | |
111 | *s = *names; | |
112 | ||
113 | *s = 0; | |
114 | if (name[0] == '\0') | |
115 | break; | |
116 | ||
117 | if ((s = strrchr(name, '-')) != NULL) | |
118 | { | |
119 | *s = '\0'; | |
120 | element = atoi(s + 1) - 1; | |
121 | val = cgiGetArray(name, element); | |
122 | } | |
123 | else | |
124 | val = cgiGetVariable(name); | |
125 | ||
126 | if (val == NULL) | |
127 | return (0); | |
128 | ||
129 | if (*val == '\0') | |
130 | return (0); /* Can't be blank, either! */ | |
131 | } | |
132 | ||
133 | return (1); | |
134 | } | |
135 | ||
136 | ||
137 | /* | |
138 | * 'cgiGetArray()' - Get an element from a form array... | |
139 | */ | |
140 | ||
141 | const char * /* O - Element value or NULL */ | |
142 | cgiGetArray(const char *name, /* I - Name of array variable */ | |
143 | int element) /* I - Element number (0 to N) */ | |
144 | { | |
145 | _cgi_var_t *var; /* Pointer to variable */ | |
146 | ||
147 | ||
148 | if ((var = cgi_find_variable(name)) == NULL) | |
149 | return (NULL); | |
150 | ||
ef416fc2 | 151 | if (element < 0 || element >= var->nvalues) |
152 | return (NULL); | |
153 | ||
154 | return (var->values[element]); | |
155 | } | |
156 | ||
157 | ||
158 | /* | |
159 | * 'cgiGetFile()' - Get the file (if any) that was submitted in the form. | |
160 | */ | |
161 | ||
162 | const cgi_file_t * /* O - Attached file or NULL */ | |
163 | cgiGetFile(void) | |
164 | { | |
165 | return (form_file); | |
166 | } | |
167 | ||
168 | ||
169 | /* | |
170 | * 'cgiGetSize()' - Get the size of a form array value. | |
171 | */ | |
172 | ||
173 | int /* O - Number of elements */ | |
174 | cgiGetSize(const char *name) /* I - Name of variable */ | |
175 | { | |
176 | _cgi_var_t *var; /* Pointer to variable */ | |
177 | ||
178 | ||
179 | if ((var = cgi_find_variable(name)) == NULL) | |
180 | return (0); | |
181 | ||
182 | return (var->nvalues); | |
183 | } | |
184 | ||
185 | ||
186 | /* | |
187 | * 'cgiGetVariable()' - Get a CGI variable from the database... | |
188 | * | |
189 | * Returns NULL if the variable doesn't exist. If the variable is an | |
190 | * array of values, returns the last element... | |
191 | */ | |
192 | ||
193 | const char * /* O - Value of variable */ | |
194 | cgiGetVariable(const char *name) /* I - Name of variable */ | |
195 | { | |
196 | const _cgi_var_t *var; /* Returned variable */ | |
197 | ||
198 | ||
199 | var = cgi_find_variable(name); | |
200 | ||
201 | #ifdef DEBUG | |
202 | if (var == NULL) | |
ae71f5de | 203 | DEBUG_printf(("cgiGetVariable(\"%s\") is returning NULL...\n", name)); |
ef416fc2 | 204 | else |
ae71f5de MS |
205 | DEBUG_printf(("cgiGetVariable(\"%s\") is returning \"%s\"...\n", name, |
206 | var->values[var->nvalues - 1])); | |
ef416fc2 | 207 | #endif /* DEBUG */ |
208 | ||
209 | return ((var == NULL) ? NULL : var->values[var->nvalues - 1]); | |
210 | } | |
211 | ||
212 | ||
213 | /* | |
214 | * 'cgiInitialize()' - Initialize the CGI variable "database"... | |
215 | */ | |
216 | ||
217 | int /* O - Non-zero if there was form data */ | |
218 | cgiInitialize(void) | |
219 | { | |
220 | const char *method; /* Form posting method */ | |
221 | const char *content_type; /* Content-Type of post data */ | |
222 | ||
223 | ||
224 | /* | |
225 | * Setup a password callback for authentication... | |
226 | */ | |
227 | ||
228 | cupsSetPasswordCB(cgi_passwd); | |
229 | ||
80ca4592 | 230 | /* |
231 | * Set the locale so that times, etc. are formatted properly... | |
232 | */ | |
233 | ||
234 | setlocale(LC_ALL, ""); | |
235 | ||
ef416fc2 | 236 | #ifdef DEBUG |
237 | /* | |
238 | * Disable output buffering to find bugs... | |
239 | */ | |
240 | ||
241 | setbuf(stdout, NULL); | |
ef416fc2 | 242 | #endif /* DEBUG */ |
243 | ||
244 | /* | |
245 | * Get the request method (GET or POST)... | |
246 | */ | |
247 | ||
248 | method = getenv("REQUEST_METHOD"); | |
249 | content_type = getenv("CONTENT_TYPE"); | |
250 | if (!method) | |
251 | return (0); | |
252 | ||
253 | /* | |
254 | * Grab form data from the corresponding location... | |
255 | */ | |
256 | ||
257 | if (!strcasecmp(method, "GET")) | |
258 | return (cgi_initialize_get()); | |
259 | else if (!strcasecmp(method, "POST") && content_type) | |
260 | { | |
261 | const char *boundary = strstr(content_type, "boundary="); | |
262 | ||
263 | if (boundary) | |
264 | boundary += 9; | |
265 | ||
266 | if (content_type && !strncmp(content_type, "multipart/form-data; ", 21)) | |
267 | return (cgi_initialize_multipart(boundary)); | |
268 | else | |
269 | return (cgi_initialize_post()); | |
270 | } | |
271 | else | |
272 | return (0); | |
273 | } | |
274 | ||
275 | ||
276 | /* | |
277 | * 'cgiIsPOST()' - Determine whether this page was POSTed. | |
278 | */ | |
279 | ||
280 | int /* O - 1 if POST, 0 if GET */ | |
281 | cgiIsPOST(void) | |
282 | { | |
283 | const char *method; /* REQUEST_METHOD environment variable */ | |
284 | ||
285 | ||
286 | if ((method = getenv("REQUEST_METHOD")) == NULL) | |
287 | return (0); | |
288 | else | |
289 | return (!strcmp(method, "POST")); | |
290 | } | |
291 | ||
292 | ||
293 | /* | |
294 | * 'cgiSetArray()' - Set array element N to the specified string. | |
295 | * | |
296 | * If the variable array is smaller than (element + 1), the intervening | |
297 | * elements are set to NULL. | |
298 | */ | |
299 | ||
300 | void | |
301 | cgiSetArray(const char *name, /* I - Name of variable */ | |
302 | int element, /* I - Element number (0 to N) */ | |
303 | const char *value) /* I - Value of variable */ | |
304 | { | |
305 | int i; /* Looping var */ | |
306 | _cgi_var_t *var; /* Returned variable */ | |
307 | ||
308 | ||
309 | if (name == NULL || value == NULL || element < 0 || element > 100000) | |
310 | return; | |
311 | ||
312 | if ((var = cgi_find_variable(name)) == NULL) | |
313 | { | |
314 | cgi_add_variable(name, element, value); | |
315 | cgi_sort_variables(); | |
316 | } | |
317 | else | |
318 | { | |
319 | if (element >= var->avalues) | |
320 | { | |
91c84a35 MS |
321 | const char **temp; /* Temporary pointer */ |
322 | ||
323 | temp = (const char **)realloc((void *)(var->values), | |
324 | sizeof(char *) * (element + 16)); | |
325 | if (!temp) | |
326 | return; | |
327 | ||
ef416fc2 | 328 | var->avalues = element + 16; |
91c84a35 | 329 | var->values = temp; |
ef416fc2 | 330 | } |
331 | ||
332 | if (element >= var->nvalues) | |
333 | { | |
334 | for (i = var->nvalues; i < element; i ++) | |
335 | var->values[i] = NULL; | |
336 | ||
337 | var->nvalues = element + 1; | |
338 | } | |
339 | else if (var->values[element]) | |
340 | free((char *)var->values[element]); | |
341 | ||
342 | var->values[element] = strdup(value); | |
343 | } | |
344 | } | |
345 | ||
346 | ||
347 | /* | |
348 | * 'cgiSetSize()' - Set the array size. | |
349 | */ | |
350 | ||
351 | void | |
352 | cgiSetSize(const char *name, /* I - Name of variable */ | |
353 | int size) /* I - Number of elements (0 to N) */ | |
354 | { | |
355 | int i; /* Looping var */ | |
356 | _cgi_var_t *var; /* Returned variable */ | |
357 | ||
358 | ||
359 | if (name == NULL || size < 0 || size > 100000) | |
360 | return; | |
361 | ||
362 | if ((var = cgi_find_variable(name)) == NULL) | |
363 | return; | |
364 | ||
365 | if (size >= var->avalues) | |
366 | { | |
91c84a35 MS |
367 | const char **temp; /* Temporary pointer */ |
368 | ||
369 | temp = (const char **)realloc((void *)(var->values), | |
370 | sizeof(char *) * (size + 16)); | |
371 | if (!temp) | |
372 | return; | |
373 | ||
ef416fc2 | 374 | var->avalues = size + 16; |
91c84a35 | 375 | var->values = temp; |
ef416fc2 | 376 | } |
377 | ||
378 | if (size > var->nvalues) | |
379 | { | |
380 | for (i = var->nvalues; i < size; i ++) | |
381 | var->values[i] = NULL; | |
382 | } | |
383 | else if (size < var->nvalues) | |
384 | { | |
385 | for (i = size; i < var->nvalues; i ++) | |
386 | if (var->values[i]) | |
387 | free((void *)(var->values[i])); | |
388 | } | |
389 | ||
390 | var->nvalues = size; | |
391 | } | |
392 | ||
393 | ||
394 | /* | |
395 | * 'cgiSetVariable()' - Set a CGI variable in the database... | |
396 | * | |
397 | * If the variable is an array, this truncates the array to a single element. | |
398 | */ | |
399 | ||
400 | void | |
401 | cgiSetVariable(const char *name, /* I - Name of variable */ | |
402 | const char *value) /* I - Value of variable */ | |
403 | { | |
404 | int i; /* Looping var */ | |
405 | _cgi_var_t *var; /* Returned variable */ | |
406 | ||
407 | ||
408 | if (name == NULL || value == NULL) | |
409 | return; | |
410 | ||
411 | if ((var = cgi_find_variable(name)) == NULL) | |
412 | { | |
413 | cgi_add_variable(name, 0, value); | |
414 | cgi_sort_variables(); | |
415 | } | |
416 | else | |
417 | { | |
418 | for (i = 0; i < var->nvalues; i ++) | |
419 | if (var->values[i]) | |
420 | free((char *)var->values[i]); | |
421 | ||
422 | var->values[0] = strdup(value); | |
423 | var->nvalues = 1; | |
424 | } | |
425 | } | |
426 | ||
427 | ||
428 | /* | |
429 | * 'cgi_add_variable()' - Add a form variable. | |
430 | */ | |
431 | ||
432 | static void | |
433 | cgi_add_variable(const char *name, /* I - Variable name */ | |
434 | int element, /* I - Array element number */ | |
435 | const char *value) /* I - Variable value */ | |
436 | { | |
91c84a35 | 437 | _cgi_var_t *var; /* New variable */ |
ef416fc2 | 438 | |
439 | ||
440 | if (name == NULL || value == NULL || element < 0 || element > 100000) | |
441 | return; | |
442 | ||
ae71f5de MS |
443 | DEBUG_printf(("cgi_add_variable: Adding variable \'%s\' with value " |
444 | "\'%s\'...\n", name, value)); | |
ef416fc2 | 445 | |
446 | if (form_count >= form_alloc) | |
447 | { | |
91c84a35 MS |
448 | _cgi_var_t *temp_vars; /* Temporary form pointer */ |
449 | ||
450 | ||
ef416fc2 | 451 | if (form_alloc == 0) |
91c84a35 | 452 | temp_vars = malloc(sizeof(_cgi_var_t) * 16); |
ef416fc2 | 453 | else |
91c84a35 MS |
454 | temp_vars = realloc(form_vars, (form_alloc + 16) * sizeof(_cgi_var_t)); |
455 | ||
456 | if (!temp_vars) | |
457 | return; | |
ef416fc2 | 458 | |
91c84a35 | 459 | form_vars = temp_vars; |
ef416fc2 | 460 | form_alloc += 16; |
461 | } | |
462 | ||
91c84a35 MS |
463 | var = form_vars + form_count; |
464 | ||
465 | if ((var->values = calloc(element + 1, sizeof(char *))) == NULL) | |
466 | return; | |
467 | ||
ef416fc2 | 468 | var->name = strdup(name); |
469 | var->nvalues = element + 1; | |
470 | var->avalues = element + 1; | |
ef416fc2 | 471 | var->values[element] = strdup(value); |
472 | ||
473 | form_count ++; | |
474 | } | |
475 | ||
476 | ||
477 | /* | |
478 | * 'cgi_compare_variables()' - Compare two variables. | |
479 | */ | |
480 | ||
481 | static int /* O - Result of comparison */ | |
482 | cgi_compare_variables( | |
483 | const _cgi_var_t *v1, /* I - First variable */ | |
484 | const _cgi_var_t *v2) /* I - Second variable */ | |
485 | { | |
486 | return (strcasecmp(v1->name, v2->name)); | |
487 | } | |
488 | ||
489 | ||
490 | /* | |
491 | * 'cgi_find_variable()' - Find a variable... | |
492 | */ | |
493 | ||
494 | static _cgi_var_t * /* O - Variable pointer or NULL */ | |
495 | cgi_find_variable(const char *name) /* I - Name of variable */ | |
496 | { | |
497 | _cgi_var_t key; /* Search key */ | |
498 | ||
499 | ||
500 | if (form_count < 1 || name == NULL) | |
501 | return (NULL); | |
502 | ||
503 | key.name = name; | |
504 | ||
505 | return ((_cgi_var_t *)bsearch(&key, form_vars, form_count, sizeof(_cgi_var_t), | |
506 | (int (*)(const void *, const void *))cgi_compare_variables)); | |
507 | } | |
508 | ||
509 | ||
510 | /* | |
511 | * 'cgi_initialize_get()' - Initialize form variables using the GET method. | |
512 | */ | |
513 | ||
514 | static int /* O - 1 if form data read */ | |
515 | cgi_initialize_get(void) | |
516 | { | |
517 | char *data; /* Pointer to form data string */ | |
518 | ||
519 | ||
ae71f5de | 520 | DEBUG_puts("cgi_initialize_get: Initializing variables using GET method..."); |
ef416fc2 | 521 | |
522 | /* | |
523 | * Check to see if there is anything for us to read... | |
524 | */ | |
525 | ||
526 | data = getenv("QUERY_STRING"); | |
527 | if (data == NULL || strlen(data) == 0) | |
528 | return (0); | |
529 | ||
530 | /* | |
531 | * Parse it out and return... | |
532 | */ | |
533 | ||
534 | return (cgi_initialize_string(data)); | |
535 | } | |
536 | ||
537 | ||
538 | /* | |
539 | * 'cgi_initialize_multipart()' - Initialize variables and file using the POST method. | |
540 | * | |
541 | * TODO: Update to support files > 2GB. | |
542 | */ | |
543 | ||
544 | static int /* O - 1 if form data was read */ | |
545 | cgi_initialize_multipart( | |
546 | const char *boundary) /* I - Boundary string */ | |
547 | { | |
548 | char line[10240], /* MIME header line */ | |
549 | name[1024], /* Form variable name */ | |
550 | filename[1024], /* Form filename */ | |
551 | mimetype[1024], /* MIME media type */ | |
552 | bstring[256], /* Boundary string to look for */ | |
553 | *ptr, /* Pointer into name/filename */ | |
554 | *end; /* End of buffer */ | |
555 | int ch, /* Character from file */ | |
556 | fd, /* Temporary file descriptor */ | |
557 | blen; /* Length of boundary string */ | |
558 | ||
559 | ||
560 | DEBUG_printf(("cgi_initialize_multipart(boundary=\"%s\")\n", boundary)); | |
561 | ||
562 | /* | |
563 | * Read multipart form data until we run out... | |
564 | */ | |
565 | ||
566 | name[0] = '\0'; | |
567 | filename[0] = '\0'; | |
568 | mimetype[0] = '\0'; | |
569 | ||
570 | snprintf(bstring, sizeof(bstring), "\r\n--%s", boundary); | |
571 | blen = strlen(bstring); | |
572 | ||
573 | while (fgets(line, sizeof(line), stdin)) | |
574 | { | |
575 | if (!strcmp(line, "\r\n")) | |
576 | { | |
577 | /* | |
578 | * End of headers, grab value... | |
579 | */ | |
580 | ||
581 | if (filename[0]) | |
582 | { | |
583 | /* | |
584 | * Read an embedded file... | |
585 | */ | |
586 | ||
587 | if (form_file) | |
588 | { | |
589 | /* | |
590 | * Remove previous file... | |
591 | */ | |
592 | ||
593 | cgi_unlink_file(); | |
594 | } | |
595 | ||
596 | /* | |
597 | * Allocate memory for the new file... | |
598 | */ | |
599 | ||
600 | if ((form_file = calloc(1, sizeof(cgi_file_t))) == NULL) | |
601 | return (0); | |
602 | ||
603 | form_file->name = strdup(name); | |
604 | form_file->filename = strdup(filename); | |
605 | form_file->mimetype = strdup(mimetype); | |
606 | ||
607 | fd = cupsTempFd(form_file->tempfile, sizeof(form_file->tempfile)); | |
608 | ||
609 | if (fd < 0) | |
610 | return (0); | |
611 | ||
612 | atexit(cgi_unlink_file); | |
613 | ||
614 | /* | |
615 | * Copy file data to the temp file... | |
616 | */ | |
617 | ||
618 | ptr = line; | |
619 | ||
620 | while ((ch = getchar()) != EOF) | |
621 | { | |
622 | *ptr++ = ch; | |
623 | ||
624 | if ((ptr - line) >= blen && !memcmp(ptr - blen, bstring, blen)) | |
625 | { | |
626 | ptr -= blen; | |
627 | break; | |
628 | } | |
629 | ||
630 | if ((ptr - line - blen) >= 8192) | |
631 | { | |
632 | /* | |
633 | * Write out the first 8k of the buffer... | |
634 | */ | |
635 | ||
636 | write(fd, line, 8192); | |
637 | memmove(line, line + 8192, ptr - line - 8192); | |
638 | ptr -= 8192; | |
639 | } | |
640 | } | |
641 | ||
642 | /* | |
643 | * Write the rest of the data and close the temp file... | |
644 | */ | |
645 | ||
646 | if (ptr > line) | |
647 | write(fd, line, ptr - line); | |
648 | ||
649 | close(fd); | |
650 | } | |
651 | else | |
652 | { | |
653 | /* | |
654 | * Just get a form variable; the current code only handles | |
655 | * form values up to 10k in size... | |
656 | */ | |
657 | ||
658 | ptr = line; | |
659 | end = line + sizeof(line) - 1; | |
660 | ||
661 | while ((ch = getchar()) != EOF) | |
662 | { | |
663 | if (ptr < end) | |
664 | *ptr++ = ch; | |
665 | ||
666 | if ((ptr - line) >= blen && !memcmp(ptr - blen, bstring, blen)) | |
667 | { | |
668 | ptr -= blen; | |
669 | break; | |
670 | } | |
671 | } | |
672 | ||
673 | *ptr = '\0'; | |
674 | ||
675 | /* | |
676 | * Set the form variable... | |
677 | */ | |
678 | ||
679 | if ((ptr = strrchr(name, '-')) != NULL && isdigit(ptr[1] & 255)) | |
680 | { | |
681 | /* | |
682 | * Set a specific index in the array... | |
683 | */ | |
684 | ||
685 | *ptr++ = '\0'; | |
686 | if (line[0]) | |
687 | cgiSetArray(name, atoi(ptr) - 1, line); | |
688 | } | |
689 | else if (cgiGetVariable(name)) | |
690 | { | |
691 | /* | |
692 | * Add another element in the array... | |
693 | */ | |
694 | ||
695 | cgiSetArray(name, cgiGetSize(name), line); | |
696 | } | |
697 | else | |
698 | { | |
699 | /* | |
700 | * Just set the line... | |
701 | */ | |
702 | ||
703 | cgiSetVariable(name, line); | |
704 | } | |
705 | } | |
706 | ||
707 | /* | |
708 | * Read the rest of the current line... | |
709 | */ | |
710 | ||
711 | fgets(line, sizeof(line), stdin); | |
712 | ||
713 | /* | |
714 | * Clear the state vars... | |
715 | */ | |
716 | ||
717 | name[0] = '\0'; | |
718 | filename[0] = '\0'; | |
719 | mimetype[0] = '\0'; | |
720 | } | |
721 | else if (!strncasecmp(line, "Content-Disposition:", 20)) | |
722 | { | |
723 | if ((ptr = strstr(line + 20, " name=\"")) != NULL) | |
724 | { | |
725 | strlcpy(name, ptr + 7, sizeof(name)); | |
726 | ||
727 | if ((ptr = strchr(name, '\"')) != NULL) | |
728 | *ptr = '\0'; | |
729 | } | |
730 | ||
731 | if ((ptr = strstr(line + 20, " filename=\"")) != NULL) | |
732 | { | |
733 | strlcpy(filename, ptr + 11, sizeof(filename)); | |
734 | ||
735 | if ((ptr = strchr(filename, '\"')) != NULL) | |
736 | *ptr = '\0'; | |
737 | } | |
738 | } | |
739 | else if (!strncasecmp(line, "Content-Type:", 13)) | |
740 | { | |
741 | for (ptr = line + 13; isspace(*ptr & 255); ptr ++); | |
742 | ||
743 | strlcpy(mimetype, ptr, sizeof(mimetype)); | |
744 | ||
745 | for (ptr = mimetype + strlen(mimetype) - 1; | |
746 | ptr > mimetype && isspace(*ptr & 255); | |
747 | *ptr-- = '\0'); | |
748 | } | |
749 | } | |
750 | ||
751 | /* | |
752 | * Return 1 for "form data found"... | |
753 | */ | |
754 | ||
755 | return (1); | |
756 | } | |
757 | ||
758 | ||
759 | /* | |
760 | * 'cgi_initialize_post()' - Initialize variables using the POST method. | |
761 | */ | |
762 | ||
763 | static int /* O - 1 if form data was read */ | |
764 | cgi_initialize_post(void) | |
765 | { | |
766 | char *content_length, /* Length of input data (string) */ | |
767 | *data; /* Pointer to form data string */ | |
768 | int length, /* Length of input data */ | |
769 | nbytes, /* Number of bytes read this read() */ | |
770 | tbytes, /* Total number of bytes read */ | |
771 | status; /* Return status */ | |
772 | ||
773 | ||
ae71f5de | 774 | DEBUG_puts("cgi_initialize_post: Initializing variables using POST method..."); |
ef416fc2 | 775 | |
776 | /* | |
777 | * Check to see if there is anything for us to read... | |
778 | */ | |
779 | ||
780 | content_length = getenv("CONTENT_LENGTH"); | |
781 | if (content_length == NULL || atoi(content_length) <= 0) | |
782 | return (0); | |
783 | ||
784 | /* | |
785 | * Get the length of the input stream and allocate a buffer for it... | |
786 | */ | |
787 | ||
788 | length = atoi(content_length); | |
789 | data = malloc(length + 1); | |
790 | ||
791 | if (data == NULL) | |
792 | return (0); | |
793 | ||
794 | /* | |
795 | * Read the data into the buffer... | |
796 | */ | |
797 | ||
798 | for (tbytes = 0; tbytes < length; tbytes += nbytes) | |
799 | if ((nbytes = read(0, data + tbytes, length - tbytes)) < 0) | |
080811b1 | 800 | { |
ef416fc2 | 801 | if (errno != EAGAIN) |
802 | { | |
803 | free(data); | |
804 | return (0); | |
805 | } | |
080811b1 MS |
806 | else |
807 | nbytes = 0; | |
808 | } | |
f11a948a MS |
809 | else if (nbytes == 0) |
810 | { | |
811 | /* | |
812 | * CUPS STR #3176: OpenBSD: Early end-of-file on POST data causes 100% CPU | |
813 | * | |
814 | * This should never happen, but does on OpenBSD. If we see early end-of- | |
815 | * file, treat this as an error and process no data. | |
816 | */ | |
817 | ||
818 | free(data); | |
819 | return (0); | |
820 | } | |
ef416fc2 | 821 | |
822 | data[length] = '\0'; | |
823 | ||
824 | /* | |
825 | * Parse it out... | |
826 | */ | |
827 | ||
828 | status = cgi_initialize_string(data); | |
829 | ||
830 | /* | |
831 | * Free the data and return... | |
832 | */ | |
833 | ||
834 | free(data); | |
835 | ||
836 | return (status); | |
837 | } | |
838 | ||
839 | ||
840 | /* | |
841 | * 'cgi_initialize_string()' - Initialize form variables from a string. | |
842 | */ | |
843 | ||
844 | static int /* O - 1 if form data was processed */ | |
845 | cgi_initialize_string(const char *data) /* I - Form data string */ | |
846 | { | |
847 | int done; /* True if we're done reading a form variable */ | |
848 | char *s, /* Pointer to current form string */ | |
849 | ch, /* Temporary character */ | |
850 | name[255], /* Name of form variable */ | |
851 | value[65536]; /* Variable value... */ | |
852 | ||
853 | ||
854 | /* | |
855 | * Check input... | |
856 | */ | |
857 | ||
858 | if (data == NULL) | |
859 | return (0); | |
860 | ||
861 | /* | |
862 | * Loop until we've read all the form data... | |
863 | */ | |
864 | ||
865 | while (*data != '\0') | |
866 | { | |
867 | /* | |
868 | * Get the variable name... | |
869 | */ | |
870 | ||
871 | for (s = name; *data != '\0'; data ++) | |
872 | if (*data == '=') | |
873 | break; | |
874 | else if (*data >= ' ' && s < (name + sizeof(name) - 1)) | |
875 | *s++ = *data; | |
876 | ||
877 | *s = '\0'; | |
878 | if (*data == '=') | |
879 | data ++; | |
880 | else | |
881 | return (0); | |
882 | ||
883 | /* | |
884 | * Read the variable value... | |
885 | */ | |
886 | ||
887 | for (s = value, done = 0; !done && *data != '\0'; data ++) | |
888 | switch (*data) | |
889 | { | |
890 | case '&' : /* End of data... */ | |
891 | done = 1; | |
892 | break; | |
893 | ||
894 | case '+' : /* Escaped space character */ | |
895 | if (s < (value + sizeof(value) - 1)) | |
896 | *s++ = ' '; | |
897 | break; | |
898 | ||
899 | case '%' : /* Escaped control character */ | |
900 | /* | |
901 | * Read the hex code... | |
902 | */ | |
903 | ||
904 | if (s < (value + sizeof(value) - 1)) | |
905 | { | |
906 | data ++; | |
907 | ch = *data - '0'; | |
908 | if (ch > 9) | |
909 | ch -= 7; | |
910 | *s = ch << 4; | |
911 | ||
912 | data ++; | |
913 | ch = *data - '0'; | |
914 | if (ch > 9) | |
915 | ch -= 7; | |
916 | *s++ |= ch; | |
917 | } | |
918 | else | |
919 | data += 2; | |
920 | break; | |
921 | ||
922 | default : /* Other characters come straight through */ | |
923 | if (*data >= ' ' && s < (value + sizeof(value) - 1)) | |
924 | *s++ = *data; | |
925 | break; | |
926 | } | |
927 | ||
928 | *s = '\0'; /* nul terminate the string */ | |
929 | ||
930 | /* | |
931 | * Remove trailing whitespace... | |
932 | */ | |
933 | ||
934 | if (s > value) | |
935 | s --; | |
936 | ||
58dc1933 | 937 | while (s >= value && isspace(*s & 255)) |
ef416fc2 | 938 | *s-- = '\0'; |
939 | ||
940 | /* | |
941 | * Add the string to the variable "database"... | |
942 | */ | |
943 | ||
944 | if ((s = strrchr(name, '-')) != NULL && isdigit(s[1] & 255)) | |
945 | { | |
946 | *s++ = '\0'; | |
947 | if (value[0]) | |
948 | cgiSetArray(name, atoi(s) - 1, value); | |
949 | } | |
950 | else if (cgiGetVariable(name) != NULL) | |
951 | cgiSetArray(name, cgiGetSize(name), value); | |
952 | else | |
953 | cgiSetVariable(name, value); | |
954 | } | |
955 | ||
956 | return (1); | |
957 | } | |
958 | ||
959 | ||
960 | /* | |
961 | * 'cgi_passwd()' - Catch authentication requests and notify the server. | |
962 | * | |
963 | * This function sends a Status header and exits, forcing authentication | |
964 | * for this request. | |
965 | */ | |
966 | ||
967 | static const char * /* O - NULL (no return) */ | |
968 | cgi_passwd(const char *prompt) /* I - Prompt (not used) */ | |
969 | { | |
970 | (void)prompt; | |
971 | ||
f301802f | 972 | fprintf(stderr, "DEBUG: cgi_passwd(prompt=\"%s\") called!\n", |
973 | prompt ? prompt : "(null)"); | |
ef416fc2 | 974 | |
975 | /* | |
976 | * Send a 401 (unauthorized) status to the server, so it can notify | |
977 | * the client that authentication is required. | |
978 | */ | |
979 | ||
980 | puts("Status: 401\n"); | |
981 | exit(0); | |
982 | ||
983 | /* | |
984 | * This code is never executed, but is present to satisfy the compiler. | |
985 | */ | |
986 | ||
987 | return (NULL); | |
988 | } | |
989 | ||
990 | ||
991 | /* | |
992 | * 'cgi_sort_variables()' - Sort all form variables for faster lookup. | |
993 | */ | |
994 | ||
995 | static void | |
996 | cgi_sort_variables(void) | |
997 | { | |
998 | #ifdef DEBUG | |
999 | int i; | |
1000 | ||
1001 | ||
ae71f5de | 1002 | DEBUG_puts("cgi_sort_variables: Sorting variables..."); |
ef416fc2 | 1003 | #endif /* DEBUG */ |
1004 | ||
1005 | if (form_count < 2) | |
1006 | return; | |
1007 | ||
1008 | qsort(form_vars, form_count, sizeof(_cgi_var_t), | |
1009 | (int (*)(const void *, const void *))cgi_compare_variables); | |
1010 | ||
1011 | #ifdef DEBUG | |
ae71f5de | 1012 | DEBUG_puts("cgi_sort_variables: Sorted variable list is:"); |
ef416fc2 | 1013 | for (i = 0; i < form_count; i ++) |
ae71f5de MS |
1014 | DEBUG_printf(("cgi_sort_variables: %d: %s (%d) = \"%s\" ...\n", i, |
1015 | form_vars[i].name, form_vars[i].nvalues, | |
1016 | form_vars[i].values[0])); | |
ef416fc2 | 1017 | #endif /* DEBUG */ |
1018 | } | |
1019 | ||
1020 | ||
1021 | /* | |
1022 | * 'cgi_unlink_file()' - Remove the uploaded form. | |
1023 | */ | |
1024 | ||
1025 | static void | |
1026 | cgi_unlink_file(void) | |
1027 | { | |
1028 | if (form_file) | |
1029 | { | |
1030 | /* | |
1031 | * Remove the temporary file... | |
1032 | */ | |
1033 | ||
1034 | unlink(form_file->tempfile); | |
1035 | ||
1036 | /* | |
1037 | * Free memory used... | |
1038 | */ | |
1039 | ||
1040 | free(form_file->name); | |
1041 | free(form_file->filename); | |
1042 | free(form_file->mimetype); | |
1043 | free(form_file); | |
1044 | ||
1045 | form_file = NULL; | |
1046 | } | |
1047 | } | |
1048 | ||
1049 | ||
1050 | /* | |
75bd9771 | 1051 | * End of "$Id: var.c 7460 2008-04-16 02:19:54Z mike $". |
ef416fc2 | 1052 | */ |