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ef416fc2 | 1 | /* |
bc44d920 | 2 | * "$Id: var.c 6649 2007-07-11 21:46:42Z mike $" |
ef416fc2 | 3 | * |
4 | * CGI form variable and array functions. | |
5 | * | |
91c84a35 | 6 | * Copyright 2007-2008 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 | ||
151 | if (var->nvalues == 1) | |
152 | return (var->values[0]); | |
153 | ||
154 | if (element < 0 || element >= var->nvalues) | |
155 | return (NULL); | |
156 | ||
157 | return (var->values[element]); | |
158 | } | |
159 | ||
160 | ||
161 | /* | |
162 | * 'cgiGetFile()' - Get the file (if any) that was submitted in the form. | |
163 | */ | |
164 | ||
165 | const cgi_file_t * /* O - Attached file or NULL */ | |
166 | cgiGetFile(void) | |
167 | { | |
168 | return (form_file); | |
169 | } | |
170 | ||
171 | ||
172 | /* | |
173 | * 'cgiGetSize()' - Get the size of a form array value. | |
174 | */ | |
175 | ||
176 | int /* O - Number of elements */ | |
177 | cgiGetSize(const char *name) /* I - Name of variable */ | |
178 | { | |
179 | _cgi_var_t *var; /* Pointer to variable */ | |
180 | ||
181 | ||
182 | if ((var = cgi_find_variable(name)) == NULL) | |
183 | return (0); | |
184 | ||
185 | return (var->nvalues); | |
186 | } | |
187 | ||
188 | ||
189 | /* | |
190 | * 'cgiGetVariable()' - Get a CGI variable from the database... | |
191 | * | |
192 | * Returns NULL if the variable doesn't exist. If the variable is an | |
193 | * array of values, returns the last element... | |
194 | */ | |
195 | ||
196 | const char * /* O - Value of variable */ | |
197 | cgiGetVariable(const char *name) /* I - Name of variable */ | |
198 | { | |
199 | const _cgi_var_t *var; /* Returned variable */ | |
200 | ||
201 | ||
202 | var = cgi_find_variable(name); | |
203 | ||
204 | #ifdef DEBUG | |
205 | if (var == NULL) | |
206 | printf("cgiGetVariable(\"%s\") is returning NULL...\n", name); | |
207 | else | |
208 | printf("cgiGetVariable(\"%s\") is returning \"%s\"...\n", name, | |
209 | var->values[var->nvalues - 1]); | |
210 | #endif /* DEBUG */ | |
211 | ||
212 | return ((var == NULL) ? NULL : var->values[var->nvalues - 1]); | |
213 | } | |
214 | ||
215 | ||
216 | /* | |
217 | * 'cgiInitialize()' - Initialize the CGI variable "database"... | |
218 | */ | |
219 | ||
220 | int /* O - Non-zero if there was form data */ | |
221 | cgiInitialize(void) | |
222 | { | |
223 | const char *method; /* Form posting method */ | |
224 | const char *content_type; /* Content-Type of post data */ | |
225 | ||
226 | ||
227 | /* | |
228 | * Setup a password callback for authentication... | |
229 | */ | |
230 | ||
231 | cupsSetPasswordCB(cgi_passwd); | |
232 | ||
80ca4592 | 233 | /* |
234 | * Set the locale so that times, etc. are formatted properly... | |
235 | */ | |
236 | ||
237 | setlocale(LC_ALL, ""); | |
238 | ||
ef416fc2 | 239 | #ifdef DEBUG |
240 | /* | |
241 | * Disable output buffering to find bugs... | |
242 | */ | |
243 | ||
244 | setbuf(stdout, NULL); | |
245 | puts("Content-type: text/plain\n"); | |
246 | #endif /* DEBUG */ | |
247 | ||
248 | /* | |
249 | * Get the request method (GET or POST)... | |
250 | */ | |
251 | ||
252 | method = getenv("REQUEST_METHOD"); | |
253 | content_type = getenv("CONTENT_TYPE"); | |
254 | if (!method) | |
255 | return (0); | |
256 | ||
257 | /* | |
258 | * Grab form data from the corresponding location... | |
259 | */ | |
260 | ||
261 | if (!strcasecmp(method, "GET")) | |
262 | return (cgi_initialize_get()); | |
263 | else if (!strcasecmp(method, "POST") && content_type) | |
264 | { | |
265 | const char *boundary = strstr(content_type, "boundary="); | |
266 | ||
267 | if (boundary) | |
268 | boundary += 9; | |
269 | ||
270 | if (content_type && !strncmp(content_type, "multipart/form-data; ", 21)) | |
271 | return (cgi_initialize_multipart(boundary)); | |
272 | else | |
273 | return (cgi_initialize_post()); | |
274 | } | |
275 | else | |
276 | return (0); | |
277 | } | |
278 | ||
279 | ||
280 | /* | |
281 | * 'cgiIsPOST()' - Determine whether this page was POSTed. | |
282 | */ | |
283 | ||
284 | int /* O - 1 if POST, 0 if GET */ | |
285 | cgiIsPOST(void) | |
286 | { | |
287 | const char *method; /* REQUEST_METHOD environment variable */ | |
288 | ||
289 | ||
290 | if ((method = getenv("REQUEST_METHOD")) == NULL) | |
291 | return (0); | |
292 | else | |
293 | return (!strcmp(method, "POST")); | |
294 | } | |
295 | ||
296 | ||
297 | /* | |
298 | * 'cgiSetArray()' - Set array element N to the specified string. | |
299 | * | |
300 | * If the variable array is smaller than (element + 1), the intervening | |
301 | * elements are set to NULL. | |
302 | */ | |
303 | ||
304 | void | |
305 | cgiSetArray(const char *name, /* I - Name of variable */ | |
306 | int element, /* I - Element number (0 to N) */ | |
307 | const char *value) /* I - Value of variable */ | |
308 | { | |
309 | int i; /* Looping var */ | |
310 | _cgi_var_t *var; /* Returned variable */ | |
311 | ||
312 | ||
313 | if (name == NULL || value == NULL || element < 0 || element > 100000) | |
314 | return; | |
315 | ||
316 | if ((var = cgi_find_variable(name)) == NULL) | |
317 | { | |
318 | cgi_add_variable(name, element, value); | |
319 | cgi_sort_variables(); | |
320 | } | |
321 | else | |
322 | { | |
323 | if (element >= var->avalues) | |
324 | { | |
91c84a35 MS |
325 | const char **temp; /* Temporary pointer */ |
326 | ||
327 | temp = (const char **)realloc((void *)(var->values), | |
328 | sizeof(char *) * (element + 16)); | |
329 | if (!temp) | |
330 | return; | |
331 | ||
ef416fc2 | 332 | var->avalues = element + 16; |
91c84a35 | 333 | var->values = temp; |
ef416fc2 | 334 | } |
335 | ||
336 | if (element >= var->nvalues) | |
337 | { | |
338 | for (i = var->nvalues; i < element; i ++) | |
339 | var->values[i] = NULL; | |
340 | ||
341 | var->nvalues = element + 1; | |
342 | } | |
343 | else if (var->values[element]) | |
344 | free((char *)var->values[element]); | |
345 | ||
346 | var->values[element] = strdup(value); | |
347 | } | |
348 | } | |
349 | ||
350 | ||
351 | /* | |
352 | * 'cgiSetSize()' - Set the array size. | |
353 | */ | |
354 | ||
355 | void | |
356 | cgiSetSize(const char *name, /* I - Name of variable */ | |
357 | int size) /* I - Number of elements (0 to N) */ | |
358 | { | |
359 | int i; /* Looping var */ | |
360 | _cgi_var_t *var; /* Returned variable */ | |
361 | ||
362 | ||
363 | if (name == NULL || size < 0 || size > 100000) | |
364 | return; | |
365 | ||
366 | if ((var = cgi_find_variable(name)) == NULL) | |
367 | return; | |
368 | ||
369 | if (size >= var->avalues) | |
370 | { | |
91c84a35 MS |
371 | const char **temp; /* Temporary pointer */ |
372 | ||
373 | temp = (const char **)realloc((void *)(var->values), | |
374 | sizeof(char *) * (size + 16)); | |
375 | if (!temp) | |
376 | return; | |
377 | ||
ef416fc2 | 378 | var->avalues = size + 16; |
91c84a35 | 379 | var->values = temp; |
ef416fc2 | 380 | } |
381 | ||
382 | if (size > var->nvalues) | |
383 | { | |
384 | for (i = var->nvalues; i < size; i ++) | |
385 | var->values[i] = NULL; | |
386 | } | |
387 | else if (size < var->nvalues) | |
388 | { | |
389 | for (i = size; i < var->nvalues; i ++) | |
390 | if (var->values[i]) | |
391 | free((void *)(var->values[i])); | |
392 | } | |
393 | ||
394 | var->nvalues = size; | |
395 | } | |
396 | ||
397 | ||
398 | /* | |
399 | * 'cgiSetVariable()' - Set a CGI variable in the database... | |
400 | * | |
401 | * If the variable is an array, this truncates the array to a single element. | |
402 | */ | |
403 | ||
404 | void | |
405 | cgiSetVariable(const char *name, /* I - Name of variable */ | |
406 | const char *value) /* I - Value of variable */ | |
407 | { | |
408 | int i; /* Looping var */ | |
409 | _cgi_var_t *var; /* Returned variable */ | |
410 | ||
411 | ||
412 | if (name == NULL || value == NULL) | |
413 | return; | |
414 | ||
415 | if ((var = cgi_find_variable(name)) == NULL) | |
416 | { | |
417 | cgi_add_variable(name, 0, value); | |
418 | cgi_sort_variables(); | |
419 | } | |
420 | else | |
421 | { | |
422 | for (i = 0; i < var->nvalues; i ++) | |
423 | if (var->values[i]) | |
424 | free((char *)var->values[i]); | |
425 | ||
426 | var->values[0] = strdup(value); | |
427 | var->nvalues = 1; | |
428 | } | |
429 | } | |
430 | ||
431 | ||
432 | /* | |
433 | * 'cgi_add_variable()' - Add a form variable. | |
434 | */ | |
435 | ||
436 | static void | |
437 | cgi_add_variable(const char *name, /* I - Variable name */ | |
438 | int element, /* I - Array element number */ | |
439 | const char *value) /* I - Variable value */ | |
440 | { | |
91c84a35 | 441 | _cgi_var_t *var; /* New variable */ |
ef416fc2 | 442 | |
443 | ||
444 | if (name == NULL || value == NULL || element < 0 || element > 100000) | |
445 | return; | |
446 | ||
447 | #ifdef DEBUG | |
448 | printf("Adding variable \'%s\' with value \'%s\'...\n", name, value); | |
449 | #endif /* DEBUG */ | |
450 | ||
451 | if (form_count >= form_alloc) | |
452 | { | |
91c84a35 MS |
453 | _cgi_var_t *temp_vars; /* Temporary form pointer */ |
454 | ||
455 | ||
ef416fc2 | 456 | if (form_alloc == 0) |
91c84a35 | 457 | temp_vars = malloc(sizeof(_cgi_var_t) * 16); |
ef416fc2 | 458 | else |
91c84a35 MS |
459 | temp_vars = realloc(form_vars, (form_alloc + 16) * sizeof(_cgi_var_t)); |
460 | ||
461 | if (!temp_vars) | |
462 | return; | |
ef416fc2 | 463 | |
91c84a35 | 464 | form_vars = temp_vars; |
ef416fc2 | 465 | form_alloc += 16; |
466 | } | |
467 | ||
91c84a35 MS |
468 | var = form_vars + form_count; |
469 | ||
470 | if ((var->values = calloc(element + 1, sizeof(char *))) == NULL) | |
471 | return; | |
472 | ||
ef416fc2 | 473 | var->name = strdup(name); |
474 | var->nvalues = element + 1; | |
475 | var->avalues = element + 1; | |
ef416fc2 | 476 | var->values[element] = strdup(value); |
477 | ||
478 | form_count ++; | |
479 | } | |
480 | ||
481 | ||
482 | /* | |
483 | * 'cgi_compare_variables()' - Compare two variables. | |
484 | */ | |
485 | ||
486 | static int /* O - Result of comparison */ | |
487 | cgi_compare_variables( | |
488 | const _cgi_var_t *v1, /* I - First variable */ | |
489 | const _cgi_var_t *v2) /* I - Second variable */ | |
490 | { | |
491 | return (strcasecmp(v1->name, v2->name)); | |
492 | } | |
493 | ||
494 | ||
495 | /* | |
496 | * 'cgi_find_variable()' - Find a variable... | |
497 | */ | |
498 | ||
499 | static _cgi_var_t * /* O - Variable pointer or NULL */ | |
500 | cgi_find_variable(const char *name) /* I - Name of variable */ | |
501 | { | |
502 | _cgi_var_t key; /* Search key */ | |
503 | ||
504 | ||
505 | if (form_count < 1 || name == NULL) | |
506 | return (NULL); | |
507 | ||
508 | key.name = name; | |
509 | ||
510 | return ((_cgi_var_t *)bsearch(&key, form_vars, form_count, sizeof(_cgi_var_t), | |
511 | (int (*)(const void *, const void *))cgi_compare_variables)); | |
512 | } | |
513 | ||
514 | ||
515 | /* | |
516 | * 'cgi_initialize_get()' - Initialize form variables using the GET method. | |
517 | */ | |
518 | ||
519 | static int /* O - 1 if form data read */ | |
520 | cgi_initialize_get(void) | |
521 | { | |
522 | char *data; /* Pointer to form data string */ | |
523 | ||
524 | ||
525 | #ifdef DEBUG | |
526 | puts("Initializing variables using GET method..."); | |
527 | #endif /* DEBUG */ | |
528 | ||
529 | /* | |
530 | * Check to see if there is anything for us to read... | |
531 | */ | |
532 | ||
533 | data = getenv("QUERY_STRING"); | |
534 | if (data == NULL || strlen(data) == 0) | |
535 | return (0); | |
536 | ||
537 | /* | |
538 | * Parse it out and return... | |
539 | */ | |
540 | ||
541 | return (cgi_initialize_string(data)); | |
542 | } | |
543 | ||
544 | ||
545 | /* | |
546 | * 'cgi_initialize_multipart()' - Initialize variables and file using the POST method. | |
547 | * | |
548 | * TODO: Update to support files > 2GB. | |
549 | */ | |
550 | ||
551 | static int /* O - 1 if form data was read */ | |
552 | cgi_initialize_multipart( | |
553 | const char *boundary) /* I - Boundary string */ | |
554 | { | |
555 | char line[10240], /* MIME header line */ | |
556 | name[1024], /* Form variable name */ | |
557 | filename[1024], /* Form filename */ | |
558 | mimetype[1024], /* MIME media type */ | |
559 | bstring[256], /* Boundary string to look for */ | |
560 | *ptr, /* Pointer into name/filename */ | |
561 | *end; /* End of buffer */ | |
562 | int ch, /* Character from file */ | |
563 | fd, /* Temporary file descriptor */ | |
564 | blen; /* Length of boundary string */ | |
565 | ||
566 | ||
567 | DEBUG_printf(("cgi_initialize_multipart(boundary=\"%s\")\n", boundary)); | |
568 | ||
569 | /* | |
570 | * Read multipart form data until we run out... | |
571 | */ | |
572 | ||
573 | name[0] = '\0'; | |
574 | filename[0] = '\0'; | |
575 | mimetype[0] = '\0'; | |
576 | ||
577 | snprintf(bstring, sizeof(bstring), "\r\n--%s", boundary); | |
578 | blen = strlen(bstring); | |
579 | ||
580 | while (fgets(line, sizeof(line), stdin)) | |
581 | { | |
582 | if (!strcmp(line, "\r\n")) | |
583 | { | |
584 | /* | |
585 | * End of headers, grab value... | |
586 | */ | |
587 | ||
588 | if (filename[0]) | |
589 | { | |
590 | /* | |
591 | * Read an embedded file... | |
592 | */ | |
593 | ||
594 | if (form_file) | |
595 | { | |
596 | /* | |
597 | * Remove previous file... | |
598 | */ | |
599 | ||
600 | cgi_unlink_file(); | |
601 | } | |
602 | ||
603 | /* | |
604 | * Allocate memory for the new file... | |
605 | */ | |
606 | ||
607 | if ((form_file = calloc(1, sizeof(cgi_file_t))) == NULL) | |
608 | return (0); | |
609 | ||
610 | form_file->name = strdup(name); | |
611 | form_file->filename = strdup(filename); | |
612 | form_file->mimetype = strdup(mimetype); | |
613 | ||
614 | fd = cupsTempFd(form_file->tempfile, sizeof(form_file->tempfile)); | |
615 | ||
616 | if (fd < 0) | |
617 | return (0); | |
618 | ||
619 | atexit(cgi_unlink_file); | |
620 | ||
621 | /* | |
622 | * Copy file data to the temp file... | |
623 | */ | |
624 | ||
625 | ptr = line; | |
626 | ||
627 | while ((ch = getchar()) != EOF) | |
628 | { | |
629 | *ptr++ = ch; | |
630 | ||
631 | if ((ptr - line) >= blen && !memcmp(ptr - blen, bstring, blen)) | |
632 | { | |
633 | ptr -= blen; | |
634 | break; | |
635 | } | |
636 | ||
637 | if ((ptr - line - blen) >= 8192) | |
638 | { | |
639 | /* | |
640 | * Write out the first 8k of the buffer... | |
641 | */ | |
642 | ||
643 | write(fd, line, 8192); | |
644 | memmove(line, line + 8192, ptr - line - 8192); | |
645 | ptr -= 8192; | |
646 | } | |
647 | } | |
648 | ||
649 | /* | |
650 | * Write the rest of the data and close the temp file... | |
651 | */ | |
652 | ||
653 | if (ptr > line) | |
654 | write(fd, line, ptr - line); | |
655 | ||
656 | close(fd); | |
657 | } | |
658 | else | |
659 | { | |
660 | /* | |
661 | * Just get a form variable; the current code only handles | |
662 | * form values up to 10k in size... | |
663 | */ | |
664 | ||
665 | ptr = line; | |
666 | end = line + sizeof(line) - 1; | |
667 | ||
668 | while ((ch = getchar()) != EOF) | |
669 | { | |
670 | if (ptr < end) | |
671 | *ptr++ = ch; | |
672 | ||
673 | if ((ptr - line) >= blen && !memcmp(ptr - blen, bstring, blen)) | |
674 | { | |
675 | ptr -= blen; | |
676 | break; | |
677 | } | |
678 | } | |
679 | ||
680 | *ptr = '\0'; | |
681 | ||
682 | /* | |
683 | * Set the form variable... | |
684 | */ | |
685 | ||
686 | if ((ptr = strrchr(name, '-')) != NULL && isdigit(ptr[1] & 255)) | |
687 | { | |
688 | /* | |
689 | * Set a specific index in the array... | |
690 | */ | |
691 | ||
692 | *ptr++ = '\0'; | |
693 | if (line[0]) | |
694 | cgiSetArray(name, atoi(ptr) - 1, line); | |
695 | } | |
696 | else if (cgiGetVariable(name)) | |
697 | { | |
698 | /* | |
699 | * Add another element in the array... | |
700 | */ | |
701 | ||
702 | cgiSetArray(name, cgiGetSize(name), line); | |
703 | } | |
704 | else | |
705 | { | |
706 | /* | |
707 | * Just set the line... | |
708 | */ | |
709 | ||
710 | cgiSetVariable(name, line); | |
711 | } | |
712 | } | |
713 | ||
714 | /* | |
715 | * Read the rest of the current line... | |
716 | */ | |
717 | ||
718 | fgets(line, sizeof(line), stdin); | |
719 | ||
720 | /* | |
721 | * Clear the state vars... | |
722 | */ | |
723 | ||
724 | name[0] = '\0'; | |
725 | filename[0] = '\0'; | |
726 | mimetype[0] = '\0'; | |
727 | } | |
728 | else if (!strncasecmp(line, "Content-Disposition:", 20)) | |
729 | { | |
730 | if ((ptr = strstr(line + 20, " name=\"")) != NULL) | |
731 | { | |
732 | strlcpy(name, ptr + 7, sizeof(name)); | |
733 | ||
734 | if ((ptr = strchr(name, '\"')) != NULL) | |
735 | *ptr = '\0'; | |
736 | } | |
737 | ||
738 | if ((ptr = strstr(line + 20, " filename=\"")) != NULL) | |
739 | { | |
740 | strlcpy(filename, ptr + 11, sizeof(filename)); | |
741 | ||
742 | if ((ptr = strchr(filename, '\"')) != NULL) | |
743 | *ptr = '\0'; | |
744 | } | |
745 | } | |
746 | else if (!strncasecmp(line, "Content-Type:", 13)) | |
747 | { | |
748 | for (ptr = line + 13; isspace(*ptr & 255); ptr ++); | |
749 | ||
750 | strlcpy(mimetype, ptr, sizeof(mimetype)); | |
751 | ||
752 | for (ptr = mimetype + strlen(mimetype) - 1; | |
753 | ptr > mimetype && isspace(*ptr & 255); | |
754 | *ptr-- = '\0'); | |
755 | } | |
756 | } | |
757 | ||
758 | /* | |
759 | * Return 1 for "form data found"... | |
760 | */ | |
761 | ||
762 | return (1); | |
763 | } | |
764 | ||
765 | ||
766 | /* | |
767 | * 'cgi_initialize_post()' - Initialize variables using the POST method. | |
768 | */ | |
769 | ||
770 | static int /* O - 1 if form data was read */ | |
771 | cgi_initialize_post(void) | |
772 | { | |
773 | char *content_length, /* Length of input data (string) */ | |
774 | *data; /* Pointer to form data string */ | |
775 | int length, /* Length of input data */ | |
776 | nbytes, /* Number of bytes read this read() */ | |
777 | tbytes, /* Total number of bytes read */ | |
778 | status; /* Return status */ | |
779 | ||
780 | ||
781 | #ifdef DEBUG | |
782 | puts("Initializing variables using POST method..."); | |
783 | #endif /* DEBUG */ | |
784 | ||
785 | /* | |
786 | * Check to see if there is anything for us to read... | |
787 | */ | |
788 | ||
789 | content_length = getenv("CONTENT_LENGTH"); | |
790 | if (content_length == NULL || atoi(content_length) <= 0) | |
791 | return (0); | |
792 | ||
793 | /* | |
794 | * Get the length of the input stream and allocate a buffer for it... | |
795 | */ | |
796 | ||
797 | length = atoi(content_length); | |
798 | data = malloc(length + 1); | |
799 | ||
800 | if (data == NULL) | |
801 | return (0); | |
802 | ||
803 | /* | |
804 | * Read the data into the buffer... | |
805 | */ | |
806 | ||
807 | for (tbytes = 0; tbytes < length; tbytes += nbytes) | |
808 | if ((nbytes = read(0, data + tbytes, length - tbytes)) < 0) | |
080811b1 | 809 | { |
ef416fc2 | 810 | if (errno != EAGAIN) |
811 | { | |
812 | free(data); | |
813 | return (0); | |
814 | } | |
080811b1 MS |
815 | else |
816 | nbytes = 0; | |
817 | } | |
ef416fc2 | 818 | |
819 | data[length] = '\0'; | |
820 | ||
821 | /* | |
822 | * Parse it out... | |
823 | */ | |
824 | ||
825 | status = cgi_initialize_string(data); | |
826 | ||
827 | /* | |
828 | * Free the data and return... | |
829 | */ | |
830 | ||
831 | free(data); | |
832 | ||
833 | return (status); | |
834 | } | |
835 | ||
836 | ||
837 | /* | |
838 | * 'cgi_initialize_string()' - Initialize form variables from a string. | |
839 | */ | |
840 | ||
841 | static int /* O - 1 if form data was processed */ | |
842 | cgi_initialize_string(const char *data) /* I - Form data string */ | |
843 | { | |
844 | int done; /* True if we're done reading a form variable */ | |
845 | char *s, /* Pointer to current form string */ | |
846 | ch, /* Temporary character */ | |
847 | name[255], /* Name of form variable */ | |
848 | value[65536]; /* Variable value... */ | |
849 | ||
850 | ||
851 | /* | |
852 | * Check input... | |
853 | */ | |
854 | ||
855 | if (data == NULL) | |
856 | return (0); | |
857 | ||
858 | /* | |
859 | * Loop until we've read all the form data... | |
860 | */ | |
861 | ||
862 | while (*data != '\0') | |
863 | { | |
864 | /* | |
865 | * Get the variable name... | |
866 | */ | |
867 | ||
868 | for (s = name; *data != '\0'; data ++) | |
869 | if (*data == '=') | |
870 | break; | |
871 | else if (*data >= ' ' && s < (name + sizeof(name) - 1)) | |
872 | *s++ = *data; | |
873 | ||
874 | *s = '\0'; | |
875 | if (*data == '=') | |
876 | data ++; | |
877 | else | |
878 | return (0); | |
879 | ||
880 | /* | |
881 | * Read the variable value... | |
882 | */ | |
883 | ||
884 | for (s = value, done = 0; !done && *data != '\0'; data ++) | |
885 | switch (*data) | |
886 | { | |
887 | case '&' : /* End of data... */ | |
888 | done = 1; | |
889 | break; | |
890 | ||
891 | case '+' : /* Escaped space character */ | |
892 | if (s < (value + sizeof(value) - 1)) | |
893 | *s++ = ' '; | |
894 | break; | |
895 | ||
896 | case '%' : /* Escaped control character */ | |
897 | /* | |
898 | * Read the hex code... | |
899 | */ | |
900 | ||
901 | if (s < (value + sizeof(value) - 1)) | |
902 | { | |
903 | data ++; | |
904 | ch = *data - '0'; | |
905 | if (ch > 9) | |
906 | ch -= 7; | |
907 | *s = ch << 4; | |
908 | ||
909 | data ++; | |
910 | ch = *data - '0'; | |
911 | if (ch > 9) | |
912 | ch -= 7; | |
913 | *s++ |= ch; | |
914 | } | |
915 | else | |
916 | data += 2; | |
917 | break; | |
918 | ||
919 | default : /* Other characters come straight through */ | |
920 | if (*data >= ' ' && s < (value + sizeof(value) - 1)) | |
921 | *s++ = *data; | |
922 | break; | |
923 | } | |
924 | ||
925 | *s = '\0'; /* nul terminate the string */ | |
926 | ||
927 | /* | |
928 | * Remove trailing whitespace... | |
929 | */ | |
930 | ||
931 | if (s > value) | |
932 | s --; | |
933 | ||
934 | while (s >= value && *s == ' ') | |
935 | *s-- = '\0'; | |
936 | ||
937 | /* | |
938 | * Add the string to the variable "database"... | |
939 | */ | |
940 | ||
941 | if ((s = strrchr(name, '-')) != NULL && isdigit(s[1] & 255)) | |
942 | { | |
943 | *s++ = '\0'; | |
944 | if (value[0]) | |
945 | cgiSetArray(name, atoi(s) - 1, value); | |
946 | } | |
947 | else if (cgiGetVariable(name) != NULL) | |
948 | cgiSetArray(name, cgiGetSize(name), value); | |
949 | else | |
950 | cgiSetVariable(name, value); | |
951 | } | |
952 | ||
953 | return (1); | |
954 | } | |
955 | ||
956 | ||
957 | /* | |
958 | * 'cgi_passwd()' - Catch authentication requests and notify the server. | |
959 | * | |
960 | * This function sends a Status header and exits, forcing authentication | |
961 | * for this request. | |
962 | */ | |
963 | ||
964 | static const char * /* O - NULL (no return) */ | |
965 | cgi_passwd(const char *prompt) /* I - Prompt (not used) */ | |
966 | { | |
967 | (void)prompt; | |
968 | ||
f301802f | 969 | fprintf(stderr, "DEBUG: cgi_passwd(prompt=\"%s\") called!\n", |
970 | prompt ? prompt : "(null)"); | |
ef416fc2 | 971 | |
972 | /* | |
973 | * Send a 401 (unauthorized) status to the server, so it can notify | |
974 | * the client that authentication is required. | |
975 | */ | |
976 | ||
977 | puts("Status: 401\n"); | |
978 | exit(0); | |
979 | ||
980 | /* | |
981 | * This code is never executed, but is present to satisfy the compiler. | |
982 | */ | |
983 | ||
984 | return (NULL); | |
985 | } | |
986 | ||
987 | ||
988 | /* | |
989 | * 'cgi_sort_variables()' - Sort all form variables for faster lookup. | |
990 | */ | |
991 | ||
992 | static void | |
993 | cgi_sort_variables(void) | |
994 | { | |
995 | #ifdef DEBUG | |
996 | int i; | |
997 | ||
998 | ||
999 | puts("Sorting variables..."); | |
1000 | #endif /* DEBUG */ | |
1001 | ||
1002 | if (form_count < 2) | |
1003 | return; | |
1004 | ||
1005 | qsort(form_vars, form_count, sizeof(_cgi_var_t), | |
1006 | (int (*)(const void *, const void *))cgi_compare_variables); | |
1007 | ||
1008 | #ifdef DEBUG | |
1009 | puts("Sorted variable list is:"); | |
1010 | for (i = 0; i < form_count; i ++) | |
1011 | printf("%d: %s (%d) = \"%s\" ...\n", i, form_vars[i].name, | |
1012 | form_vars[i].nvalues, form_vars[i].values[0]); | |
1013 | #endif /* DEBUG */ | |
1014 | } | |
1015 | ||
1016 | ||
1017 | /* | |
1018 | * 'cgi_unlink_file()' - Remove the uploaded form. | |
1019 | */ | |
1020 | ||
1021 | static void | |
1022 | cgi_unlink_file(void) | |
1023 | { | |
1024 | if (form_file) | |
1025 | { | |
1026 | /* | |
1027 | * Remove the temporary file... | |
1028 | */ | |
1029 | ||
1030 | unlink(form_file->tempfile); | |
1031 | ||
1032 | /* | |
1033 | * Free memory used... | |
1034 | */ | |
1035 | ||
1036 | free(form_file->name); | |
1037 | free(form_file->filename); | |
1038 | free(form_file->mimetype); | |
1039 | free(form_file); | |
1040 | ||
1041 | form_file = NULL; | |
1042 | } | |
1043 | } | |
1044 | ||
1045 | ||
1046 | /* | |
bc44d920 | 1047 | * End of "$Id: var.c 6649 2007-07-11 21:46:42Z mike $". |
ef416fc2 | 1048 | */ |