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f7deaa1a | 1 | /* |
bc44d920 | 2 | * "$Id: rss.c 6649 2007-07-11 21:46:42Z mike $" |
f7deaa1a | 3 | * |
4 | * RSS notifier for the Common UNIX Printing System (CUPS). | |
5 | * | |
bc44d920 | 6 | * Copyright 2007 by Apple Inc. |
f7deaa1a | 7 | * Copyright 2007 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/". | |
f7deaa1a | 14 | * |
15 | * Contents: | |
16 | * | |
17 | * main() - Main entry for the test notifier. | |
18 | * compare_rss() - Compare two messages. | |
19 | * delete_message() - Free all memory used by a message. | |
20 | * load_rss() - Load an existing RSS feed file. | |
21 | * new_message() - Create a new RSS message. | |
22 | * password_cb() - Return the cached password. | |
23 | * save_rss() - Save messages to a RSS file. | |
24 | * xml_escape() - Copy a string, escaping &, <, and > as needed. | |
25 | */ | |
26 | ||
27 | /* | |
28 | * Include necessary headers... | |
29 | */ | |
30 | ||
31 | #include <cups/cups.h> | |
32 | #include <cups/language.h> | |
33 | #include <cups/string.h> | |
34 | #include <cups/array.h> | |
35 | #include <errno.h> | |
36 | ||
37 | ||
38 | /* | |
39 | * Structures... | |
40 | */ | |
41 | ||
42 | typedef struct _cups_rss_s /**** RSS message data ****/ | |
43 | { | |
44 | int sequence_number; /* notify-sequence-number */ | |
45 | char *subject, /* Message subject/summary */ | |
46 | *text, /* Message text */ | |
47 | *link_url; /* Link to printer */ | |
48 | time_t event_time; /* When the event occurred */ | |
49 | } _cups_rss_t; | |
50 | ||
51 | ||
52 | /* | |
53 | * Local globals... | |
54 | */ | |
55 | ||
56 | static char *rss_password; /* Password for remote RSS */ | |
57 | ||
58 | ||
59 | /* | |
60 | * Local functions... | |
61 | */ | |
62 | ||
63 | static int compare_rss(_cups_rss_t *a, _cups_rss_t *b); | |
64 | static void delete_message(_cups_rss_t *rss); | |
65 | static void load_rss(cups_array_t *rss, const char *filename); | |
66 | static _cups_rss_t *new_message(int sequence_number, char *subject, | |
67 | char *text, char *link_url, | |
68 | time_t event_time); | |
69 | static const char *password_cb(const char *prompt); | |
70 | static int save_rss(cups_array_t *rss, const char *filename, | |
71 | const char *baseurl); | |
72 | static char *xml_escape(const char *s); | |
73 | ||
74 | ||
75 | /* | |
76 | * 'main()' - Main entry for the test notifier. | |
77 | */ | |
78 | ||
79 | int /* O - Exit status */ | |
80 | main(int argc, /* I - Number of command-line arguments */ | |
81 | char *argv[]) /* I - Command-line arguments */ | |
82 | { | |
83 | int i; /* Looping var */ | |
84 | ipp_t *event; /* Event from scheduler */ | |
85 | ipp_state_t state; /* IPP event state */ | |
86 | char scheme[32], /* URI scheme ("rss") */ | |
87 | username[256], /* Username for remote RSS */ | |
88 | host[1024], /* Hostname for remote RSS */ | |
89 | resource[1024], /* RSS file */ | |
90 | *options; /* Options */ | |
91 | int port, /* Port number for remote RSS */ | |
92 | max_events; /* Maximum number of events */ | |
93 | http_t *http; /* Connection to remote server */ | |
94 | http_status_t status; /* HTTP GET/PUT status code */ | |
95 | char filename[1024], /* Local filename */ | |
96 | newname[1024]; /* filename.N */ | |
97 | cups_lang_t *language; /* Language information */ | |
98 | ipp_attribute_t *printer_up_time, /* Timestamp on event */ | |
99 | *notify_sequence_number,/* Sequence number */ | |
100 | *notify_printer_uri; /* Printer URI */ | |
101 | char *subject, /* Subject for notification message */ | |
102 | *text, /* Text for notification message */ | |
103 | link_url[1024], /* Link to printer */ | |
104 | link_scheme[32], /* Scheme for link */ | |
105 | link_username[256], /* Username for link */ | |
106 | link_host[1024], /* Host for link */ | |
107 | link_resource[1024]; /* Resource for link */ | |
108 | int link_port; /* Link port */ | |
109 | cups_array_t *rss; /* RSS message array */ | |
110 | _cups_rss_t *msg; /* RSS message */ | |
111 | char baseurl[1024]; /* Base URL */ | |
112 | ||
113 | ||
114 | fprintf(stderr, "DEBUG: argc=%d\n", argc); | |
115 | for (i = 0; i < argc; i ++) | |
116 | fprintf(stderr, "DEBUG: argv[%d]=\"%s\"\n", i, argv[i]); | |
117 | ||
118 | /* | |
119 | * See whether we are publishing this RSS feed locally or remotely... | |
120 | */ | |
121 | ||
122 | if (httpSeparateURI(HTTP_URI_CODING_ALL, argv[1], scheme, sizeof(scheme), | |
123 | username, sizeof(username), host, sizeof(host), &port, | |
124 | resource, sizeof(resource)) < HTTP_URI_OK) | |
125 | { | |
126 | fprintf(stderr, "ERROR: Bad RSS URI \"%s\"!\n", argv[1]); | |
127 | return (1); | |
128 | } | |
129 | ||
130 | max_events = 20; | |
131 | ||
132 | if ((options = strchr(resource, '?')) != NULL) | |
133 | { | |
134 | *options++ = '\0'; | |
135 | ||
136 | if (!strncmp(options, "max_events=", 11)) | |
137 | { | |
138 | max_events = atoi(options + 11); | |
139 | ||
140 | if (max_events <= 0) | |
141 | max_events = 20; | |
142 | } | |
143 | } | |
144 | ||
145 | rss = cupsArrayNew((cups_array_func_t)compare_rss, NULL); | |
146 | ||
147 | if (host[0]) | |
148 | { | |
149 | /* | |
150 | * Remote feed, see if we can get the current file... | |
151 | */ | |
152 | ||
153 | int fd; /* Temporary file */ | |
154 | ||
155 | ||
156 | if ((rss_password = strchr(username, ':')) != NULL) | |
157 | *rss_password++ = '\0'; | |
158 | ||
159 | cupsSetPasswordCB(password_cb); | |
160 | cupsSetUser(username); | |
161 | ||
162 | if ((fd = cupsTempFd(filename, sizeof(filename))) < 0) | |
163 | { | |
164 | fprintf(stderr, "ERROR: Unable to create temporary file: %s\n", | |
165 | strerror(errno)); | |
166 | ||
167 | return (1); | |
168 | } | |
169 | ||
170 | if ((http = httpConnect(host, port)) == NULL) | |
171 | { | |
172 | fprintf(stderr, "ERROR: Unable to connect to %s on port %d: %s\n", | |
173 | host, port, strerror(errno)); | |
174 | ||
175 | close(fd); | |
176 | unlink(filename); | |
177 | ||
178 | return (1); | |
179 | } | |
180 | ||
181 | status = cupsGetFd(http, resource, fd); | |
182 | ||
183 | close(fd); | |
184 | ||
185 | if (status != HTTP_OK && status != HTTP_NOT_FOUND) | |
186 | { | |
187 | fprintf(stderr, "ERROR: Unable to GET %s from %s on port %d: %d %s\n", | |
188 | resource, host, port, status, httpStatus(status)); | |
189 | ||
190 | httpClose(http); | |
191 | unlink(filename); | |
192 | ||
193 | return (1); | |
194 | } | |
195 | ||
196 | strlcpy(newname, filename, sizeof(newname)); | |
197 | ||
198 | httpAssembleURI(HTTP_URI_CODING_ALL, baseurl, sizeof(baseurl), "http", | |
199 | NULL, host, port, resource); | |
200 | } | |
201 | else | |
202 | { | |
203 | const char *cachedir, /* CUPS_CACHEDIR */ | |
204 | *server_name, /* SERVER_NAME */ | |
205 | *server_port; /* SERVER_PORT */ | |
206 | ||
207 | ||
208 | http = NULL; | |
209 | ||
210 | if ((cachedir = getenv("CUPS_CACHEDIR")) == NULL) | |
211 | cachedir = CUPS_CACHEDIR; | |
212 | ||
213 | if ((server_name = getenv("SERVER_NAME")) == NULL) | |
214 | server_name = "localhost"; | |
215 | ||
216 | if ((server_port = getenv("SERVER_PORT")) == NULL) | |
217 | server_port = "631"; | |
218 | ||
219 | snprintf(filename, sizeof(filename), "%s/rss%s", cachedir, resource); | |
220 | snprintf(newname, sizeof(newname), "%s.N", filename); | |
221 | ||
222 | httpAssembleURIf(HTTP_URI_CODING_ALL, baseurl, sizeof(baseurl), "http", | |
223 | NULL, server_name, atoi(server_port), "/rss%s", resource); | |
224 | } | |
225 | ||
226 | /* | |
227 | * Load the previous RSS file, if any... | |
228 | */ | |
229 | ||
230 | load_rss(rss, filename); | |
231 | ||
232 | /* | |
233 | * Localize for the user's chosen language... | |
234 | */ | |
235 | ||
236 | language = cupsLangDefault(); | |
237 | ||
238 | /* | |
239 | * Read events and update the RSS file until we are out of events. | |
240 | */ | |
241 | ||
242 | for (;;) | |
243 | { | |
244 | /* | |
245 | * Read the next event... | |
246 | */ | |
247 | ||
248 | event = ippNew(); | |
249 | while ((state = ippReadFile(0, event)) != IPP_DATA) | |
250 | { | |
251 | if (state <= IPP_IDLE) | |
252 | break; | |
253 | } | |
254 | ||
255 | if (state == IPP_ERROR) | |
256 | fputs("DEBUG: ippReadFile() returned IPP_ERROR!\n", stderr); | |
257 | ||
258 | if (state <= IPP_IDLE) | |
259 | { | |
260 | ippDelete(event); | |
261 | ||
262 | if (http) | |
263 | unlink(filename); | |
264 | ||
265 | httpClose(http); | |
266 | ||
267 | return (0); | |
268 | } | |
269 | ||
270 | /* | |
271 | * Collect the info from the event... | |
272 | */ | |
273 | ||
274 | printer_up_time = ippFindAttribute(event, "printer-up-time", | |
275 | IPP_TAG_INTEGER); | |
276 | notify_sequence_number = ippFindAttribute(event, "notify-sequence-number", | |
277 | IPP_TAG_INTEGER); | |
278 | notify_printer_uri = ippFindAttribute(event, "notify-printer-uri", | |
279 | IPP_TAG_URI); | |
280 | subject = cupsNotifySubject(language, event); | |
281 | text = cupsNotifyText(language, event); | |
282 | ||
283 | if (printer_up_time && notify_sequence_number && subject && text) | |
284 | { | |
285 | /* | |
286 | * Create a new RSS message... | |
287 | */ | |
288 | ||
289 | if (notify_printer_uri) | |
290 | { | |
291 | httpSeparateURI(HTTP_URI_CODING_ALL, | |
292 | notify_printer_uri->values[0].string.text, | |
293 | link_scheme, sizeof(link_scheme), | |
294 | link_username, sizeof(link_username), | |
295 | link_host, sizeof(link_host), &link_port, | |
296 | link_resource, sizeof(link_resource)); | |
297 | httpAssembleURI(HTTP_URI_CODING_ALL, link_url, sizeof(link_url), | |
298 | "http", link_username, link_host, link_port, | |
299 | link_resource); | |
300 | } | |
301 | ||
302 | msg = new_message(notify_sequence_number->values[0].integer, | |
303 | xml_escape(subject), xml_escape(text), | |
304 | notify_printer_uri ? xml_escape(link_url) : NULL, | |
305 | printer_up_time->values[0].integer); | |
306 | ||
307 | if (!msg) | |
308 | { | |
309 | fprintf(stderr, "ERROR: Unable to create message: %s\n", | |
310 | strerror(errno)); | |
311 | ||
312 | ippDelete(event); | |
313 | ||
314 | if (http) | |
315 | unlink(filename); | |
316 | ||
317 | httpClose(http); | |
318 | ||
319 | return (1); | |
320 | } | |
321 | ||
322 | /* | |
323 | * Add it to the array... | |
324 | */ | |
325 | ||
326 | cupsArrayAdd(rss, msg); | |
327 | ||
328 | /* | |
329 | * Trim the array as needed... | |
330 | */ | |
331 | ||
332 | while (cupsArrayCount(rss) > max_events) | |
333 | { | |
334 | msg = cupsArrayFirst(rss); | |
335 | ||
336 | cupsArrayRemove(rss, msg); | |
337 | ||
338 | delete_message(msg); | |
339 | } | |
340 | ||
341 | /* | |
342 | * Save the messages to the file again, uploading as needed... | |
343 | */ | |
344 | ||
345 | if (save_rss(rss, newname, baseurl)) | |
346 | { | |
347 | if (http) | |
348 | { | |
349 | /* | |
350 | * Upload the RSS file... | |
351 | */ | |
352 | ||
353 | if ((status = cupsPutFile(http, resource, filename)) != HTTP_CREATED) | |
354 | fprintf(stderr, "ERROR: Unable to PUT %s from %s on port %d: %d %s\n", | |
355 | resource, host, port, status, httpStatus(status)); | |
356 | } | |
357 | else | |
358 | { | |
359 | /* | |
360 | * Move the new RSS file over top the old one... | |
361 | */ | |
362 | ||
363 | if (rename(newname, filename)) | |
364 | fprintf(stderr, "ERROR: Unable to rename %s to %s: %s\n", | |
365 | newname, filename, strerror(errno)); | |
366 | } | |
367 | } | |
368 | } | |
369 | ||
370 | if (subject) | |
371 | free(subject); | |
372 | ||
373 | if (text) | |
374 | free(text); | |
375 | ||
376 | ippDelete(event); | |
377 | } | |
378 | } | |
379 | ||
380 | ||
381 | /* | |
382 | * 'compare_rss()' - Compare two messages. | |
383 | */ | |
384 | ||
385 | static int /* O - Result of comparison */ | |
386 | compare_rss(_cups_rss_t *a, /* I - First message */ | |
387 | _cups_rss_t *b) /* I - Second message */ | |
388 | { | |
389 | return (a->sequence_number - b->sequence_number); | |
390 | } | |
391 | ||
392 | ||
393 | /* | |
394 | * 'delete_message()' - Free all memory used by a message. | |
395 | */ | |
396 | ||
397 | static void | |
398 | delete_message(_cups_rss_t *msg) /* I - RSS message */ | |
399 | { | |
400 | if (msg->subject) | |
401 | free(msg->subject); | |
402 | ||
403 | if (msg->text) | |
404 | free(msg->text); | |
405 | ||
406 | if (msg->link_url) | |
407 | free(msg->link_url); | |
408 | ||
409 | free(msg); | |
410 | } | |
411 | ||
412 | ||
413 | /* | |
414 | * 'load_rss()' - Load an existing RSS feed file. | |
415 | */ | |
416 | ||
417 | static void | |
418 | load_rss(cups_array_t *rss, /* I - RSS messages */ | |
419 | const char *filename) /* I - File to load */ | |
420 | { | |
421 | FILE *fp; /* File pointer */ | |
422 | char line[4096], /* Line from file */ | |
423 | *subject, /* Subject */ | |
424 | *text, /* Text */ | |
425 | *link_url, /* Link URL */ | |
426 | *start, /* Start of element */ | |
427 | *end; /* End of element */ | |
428 | time_t event_time; /* Event time */ | |
429 | int sequence_number; /* Sequence number */ | |
430 | int in_item; /* In an item */ | |
431 | _cups_rss_t *msg; /* New message */ | |
432 | ||
433 | ||
434 | if ((fp = fopen(filename, "r")) == NULL) | |
435 | { | |
436 | if (errno != ENOENT) | |
437 | fprintf(stderr, "ERROR: Unable to open %s: %s\n", filename, | |
438 | strerror(errno)); | |
439 | ||
440 | return; | |
441 | } | |
442 | ||
443 | subject = NULL; | |
444 | text = NULL; | |
445 | link_url = NULL; | |
446 | event_time = 0; | |
447 | sequence_number = 0; | |
448 | in_item = 0; | |
449 | ||
450 | while (fgets(line, sizeof(line), fp)) | |
451 | { | |
452 | if (strstr(line, "<item>")) | |
453 | in_item = 1; | |
454 | else if (strstr(line, "</item>") && in_item) | |
455 | { | |
456 | if (subject && text) | |
457 | { | |
458 | msg = new_message(sequence_number, subject, text, link_url, | |
459 | event_time); | |
460 | ||
461 | if (msg) | |
462 | cupsArrayAdd(rss, msg); | |
463 | ||
464 | } | |
465 | else | |
466 | { | |
467 | if (subject) | |
468 | free(subject); | |
469 | ||
470 | if (text) | |
471 | free(text); | |
472 | ||
473 | if (link_url) | |
474 | free(link_url); | |
475 | } | |
476 | ||
477 | subject = NULL; | |
478 | text = NULL; | |
479 | link_url = NULL; | |
480 | event_time = 0; | |
481 | sequence_number = 0; | |
482 | in_item = 0; | |
483 | } | |
484 | else if (!in_item) | |
485 | continue; | |
486 | else if ((start = strstr(line, "<title>")) != NULL) | |
487 | { | |
488 | start += 7; | |
489 | if ((end = strstr(start, "</title>")) != NULL) | |
490 | { | |
491 | *end = '\0'; | |
492 | subject = strdup(start); | |
493 | } | |
494 | } | |
495 | else if ((start = strstr(line, "<description>")) != NULL) | |
496 | { | |
497 | start += 13; | |
498 | if ((end = strstr(start, "</description>")) != NULL) | |
499 | { | |
500 | *end = '\0'; | |
501 | text = strdup(start); | |
502 | } | |
503 | } | |
504 | else if ((start = strstr(line, "<link>")) != NULL) | |
505 | { | |
506 | start += 6; | |
507 | if ((end = strstr(start, "</link>")) != NULL) | |
508 | { | |
509 | *end = '\0'; | |
510 | link_url = strdup(start); | |
511 | } | |
512 | } | |
513 | else if ((start = strstr(line, "<pubDate>")) != NULL) | |
514 | { | |
515 | start += 9; | |
516 | if ((end = strstr(start, "</pubDate>")) != NULL) | |
517 | { | |
518 | *end = '\0'; | |
519 | event_time = httpGetDateTime(start); | |
520 | } | |
521 | } | |
522 | else if ((start = strstr(line, "<guid>")) != NULL) | |
523 | sequence_number = atoi(start + 6); | |
524 | } | |
525 | ||
526 | fclose(fp); | |
527 | } | |
528 | ||
529 | ||
530 | /* | |
531 | * 'new_message()' - Create a new RSS message. | |
532 | */ | |
533 | ||
534 | static _cups_rss_t * /* O - New message */ | |
535 | new_message(int sequence_number, /* I - notify-sequence-number */ | |
536 | char *subject, /* I - Subject/summary */ | |
537 | char *text, /* I - Text */ | |
538 | char *link_url, /* I - Link to printer */ | |
539 | time_t event_time) /* I - Date/time of event */ | |
540 | { | |
541 | _cups_rss_t *msg; /* New message */ | |
542 | ||
543 | ||
544 | if ((msg = calloc(1, sizeof(_cups_rss_t))) == NULL) | |
545 | return (NULL); | |
546 | ||
547 | msg->sequence_number = sequence_number; | |
548 | msg->subject = subject; | |
549 | msg->text = text; | |
550 | msg->link_url = link_url; | |
551 | msg->event_time = event_time; | |
552 | ||
553 | return (msg); | |
554 | } | |
555 | ||
556 | ||
557 | /* | |
558 | * 'password_cb()' - Return the cached password. | |
559 | */ | |
560 | ||
561 | static const char * /* O - Cached password */ | |
562 | password_cb(const char *prompt) /* I - Prompt string, unused */ | |
563 | { | |
564 | (void)prompt; | |
565 | ||
566 | return (rss_password); | |
567 | } | |
568 | ||
569 | ||
570 | /* | |
571 | * 'save_rss()' - Save messages to a RSS file. | |
572 | */ | |
573 | ||
574 | static int /* O - 1 on success, 0 on failure */ | |
575 | save_rss(cups_array_t *rss, /* I - RSS messages */ | |
576 | const char *filename, /* I - File to save to */ | |
577 | const char *baseurl) /* I - Base URL */ | |
578 | { | |
579 | FILE *fp; /* File pointer */ | |
580 | _cups_rss_t *msg; /* Current message */ | |
581 | char date[1024]; /* Current date */ | |
ae71f5de | 582 | char *href; /* Escaped base URL */ |
f7deaa1a | 583 | |
584 | ||
585 | if ((fp = fopen(filename, "w")) == NULL) | |
586 | { | |
587 | fprintf(stderr, "ERROR: Unable to create %s: %s\n", filename, | |
588 | strerror(errno)); | |
589 | return (0); | |
590 | } | |
591 | ||
592 | fputs("<?xml version=\"1.0\"?>\n", fp); | |
593 | fputs("<rss version=\"2.0\">\n", fp); | |
594 | fputs(" <channel>\n", fp); | |
595 | fputs(" <title>CUPS RSS Feed</title>\n", fp); | |
ae71f5de MS |
596 | |
597 | href = xml_escape(baseurl); | |
598 | fprintf(fp, " <link>%s</link>\n", href); | |
599 | free(href); | |
600 | ||
09a101d6 | 601 | fputs(" <description>CUPS RSS Feed</description>\n", fp); |
f7deaa1a | 602 | fputs(" <generator>" CUPS_SVERSION "</generator>\n", fp); |
603 | fputs(" <ttl>1</ttl>\n", fp); | |
604 | ||
605 | fprintf(fp, " <pubDate>%s</pubDate>\n", | |
606 | httpGetDateString2(time(NULL), date, sizeof(date))); | |
607 | ||
608 | for (msg = (_cups_rss_t *)cupsArrayLast(rss); | |
609 | msg; | |
610 | msg = (_cups_rss_t *)cupsArrayPrev(rss)) | |
611 | { | |
612 | fputs(" <item>\n", fp); | |
613 | fprintf(fp, " <title>%s</title>\n", msg->subject); | |
614 | fprintf(fp, " <description>%s</description>\n", msg->text); | |
615 | if (msg->link_url) | |
616 | fprintf(fp, " <link>%s</link>\n", msg->link_url); | |
617 | fprintf(fp, " <pubDate>%s</pubDate>\n", | |
618 | httpGetDateString2(msg->event_time, date, sizeof(date))); | |
619 | fprintf(fp, " <guid>%d</guid>\n", msg->sequence_number); | |
620 | fputs(" </item>\n", fp); | |
621 | } | |
622 | ||
623 | fputs(" </channel>\n", fp); | |
624 | fputs("</rss>\n", fp); | |
625 | ||
626 | return (!fclose(fp)); | |
627 | } | |
628 | ||
629 | ||
630 | /* | |
631 | * 'xml_escape()' - Copy a string, escaping &, <, and > as needed. | |
632 | */ | |
633 | ||
634 | static char * /* O - Escaped string */ | |
635 | xml_escape(const char *s) /* I - String to escape */ | |
636 | { | |
637 | char *e, /* Escaped string */ | |
638 | *eptr; /* Pointer into escaped string */ | |
639 | const char *sptr; /* Pointer into string */ | |
640 | size_t bytes; /* Bytes needed for string */ | |
641 | ||
642 | ||
643 | /* | |
644 | * First figure out how many extra bytes we need... | |
645 | */ | |
646 | ||
647 | for (bytes = 0, sptr = s; *sptr; sptr ++) | |
648 | if (*sptr == '&') | |
649 | bytes += 4; /* & */ | |
650 | else if (*sptr == '<' || *sptr == '>') | |
651 | bytes += 3; /* < and > */ | |
652 | ||
653 | /* | |
654 | * If there is nothing to escape, just strdup() it... | |
655 | */ | |
656 | ||
657 | if (bytes == 0) | |
658 | return (strdup(s)); | |
659 | ||
660 | /* | |
661 | * Otherwise allocate memory and copy... | |
662 | */ | |
663 | ||
664 | if ((e = malloc(bytes + 1 + strlen(s))) == NULL) | |
665 | return (NULL); | |
666 | ||
667 | for (eptr = e, sptr = s; *sptr; sptr ++) | |
668 | if (*sptr == '&') | |
669 | { | |
670 | *eptr++ = '&'; | |
671 | *eptr++ = 'a'; | |
672 | *eptr++ = 'm'; | |
673 | *eptr++ = 'p'; | |
674 | *eptr++ = ';'; | |
675 | } | |
676 | else if (*sptr == '<') | |
677 | { | |
678 | *eptr++ = '&'; | |
679 | *eptr++ = 'l'; | |
680 | *eptr++ = 't'; | |
681 | *eptr++ = ';'; | |
682 | } | |
683 | else if (*sptr == '>') | |
684 | { | |
685 | *eptr++ = '&'; | |
686 | *eptr++ = 'g'; | |
687 | *eptr++ = 't'; | |
688 | *eptr++ = ';'; | |
689 | } | |
690 | else | |
691 | *eptr++ = *sptr; | |
692 | ||
693 | *eptr = '\0'; | |
694 | ||
695 | return (e); | |
696 | } | |
697 | ||
698 | ||
699 | /* | |
bc44d920 | 700 | * End of "$Id: rss.c 6649 2007-07-11 21:46:42Z mike $". |
f7deaa1a | 701 | */ |