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