cgic.c @ 88

Last change on this file since 88 was 78, checked in by djay, 14 years ago
Remove request length display and fix Makefile for MacOS X.
File size: 54.4 KB

Line
1	/* cgicTempDir is the only setting you are likely to need
2	to change in this file. */
3
4	/* Used only in Unix environments, in conjunction with mkstemp().
5	Elsewhere (Windows), temporary files go where the tmpnam()
6	function suggests. If this behavior does not work for you,
7	modify the getTempFileName() function to suit your needs. */
8
9	#define cgicTempDir "/tmp"
10
11	#include <fcgi_stdio.h>
12	#if CGICDEBUG
13	#define CGICDEBUGSTART \
14	{ \
15	FILE *dout; \
16	dout = fopen("/home/boutell/public_html/debug", "a"); \
17
18	#define CGICDEBUGEND \
19	fclose(dout); \
20	}
21	#else /* CGICDEBUG */
22	#define CGICDEBUGSTART
23	#define CGICDEBUGEND
24	#endif /* CGICDEBUG */
25
26	#include <stdio.h>
27	#include <string.h>
28	#include <ctype.h>
29	#include <stdlib.h>
30	#include <time.h>
31	#include <sys/types.h>
32	#include <sys/stat.h>
33
34	#ifdef WIN32
35	#include <io.h>
36
37	/* cgic 2.01 */
38	#include <fcntl.h>
39
40	#else
41	#include <unistd.h>
42	#endif /* WIN32 */
43	#include "cgic.h"
44
45	#define cgiStrEq(a, b) (!strcmp((a), (b)))
46
47	char *cgiServerSoftware;
48	char *cgiServerName;
49	char *cgiGatewayInterface;
50	char *cgiServerProtocol;
51	char *cgiServerPort;
52	char *cgiRequestMethod;
53	char *cgiPathInfo;
54	char *cgiPathTranslated;
55	char *cgiScriptName;
56	char *cgiQueryString;
57	char *cgiRemoteHost;
58	char *cgiRemoteAddr;
59	char *cgiAuthType;
60	char *cgiRemoteUser;
61	char *cgiRemoteIdent;
62	char cgiContentTypeData[1024];
63	char *cgiContentType = cgiContentTypeData;
64	char *cgiMultipartBoundary;
65	char *cgiCookie;
66	int cgiContentLength;
67	char *cgiAccept;
68	char *cgiUserAgent;
69	char *cgiReferrer;
70
71	FILE *cgiIn;
72	FILE *cgiOut;
73
74	/* True if CGI environment was restored from a file. */
75	static int cgiRestored = 0;
76
77	static void cgiGetenv(char *s, char var);
78
79	typedef enum {
80	cgiParseSuccess,
81	cgiParseMemory,
82	cgiParseIO
83	} cgiParseResultType;
84
85	/* One form entry, consisting of an attribute-value pair,
86	and an optional filename and content type. All of
87	these are guaranteed to be valid null-terminated strings,
88	which will be of length zero in the event that the
89	field is not present, with the exception of tfileName
90	which will be null when 'in' is null. DO NOT MODIFY THESE
91	VALUES. Make local copies if modifications are desired. */
92
93	typedef struct cgiFormEntryStruct {
94	char *attr;
95	/* value is populated for regular form fields only.
96	For file uploads, it points to an empty string, and file
97	upload data should be read from the file tfileName. */
98	char *value;
99	/* When fileName is not an empty string, tfileName is not null,
100	and 'value' points to an empty string. */
101	/* Valid for both files and regular fields; does not include
102	terminating null of regular fields. */
103	int valueLength;
104	char *fileName;
105	char *contentType;
106	/* Temporary file name for working storage of file uploads. */
107	char *tfileName;
108	struct cgiFormEntryStruct *next;
109	} cgiFormEntry;
110
111	/* The first form entry. */
112	static cgiFormEntry *cgiFormEntryFirst;
113
114	static cgiParseResultType cgiParseGetFormInput();
115	static cgiParseResultType cgiParsePostFormInput();
116	static cgiParseResultType cgiParsePostMultipartInput();
117	static cgiParseResultType cgiParseFormInput(char *data, int length);
118	static void cgiSetupConstants();
119	static void cgiFreeResources();
120	static int cgiStrEqNc(char s1, char s2);
121	static int cgiStrBeginsNc(char s1, char s2);
122
123	//int cgiMain_init() {}
124
125
126	int main(int argc, char *argv[]) {
127	int result;
128	char *cgiContentLengthString;
129	char *e;
130	while (FCGI_Accept() >= 0) {
131	cgiSetupConstants();
132	cgiGetenv(&cgiServerSoftware, "SERVER_SOFTWARE");
133	cgiGetenv(&cgiServerName, "SERVER_NAME");
134	cgiGetenv(&cgiGatewayInterface, "GATEWAY_INTERFACE");
135	cgiGetenv(&cgiServerProtocol, "SERVER_PROTOCOL");
136	cgiGetenv(&cgiServerPort, "SERVER_PORT");
137	cgiGetenv(&cgiRequestMethod, "REQUEST_METHOD");
138	if(strcmp(cgiRequestMethod,"")==0 && argc>=1)
139	cgiRequestMethod="GET";
140	cgiGetenv(&cgiPathInfo, "PATH_INFO");
141	cgiGetenv(&cgiPathTranslated, "PATH_TRANSLATED");
142	cgiGetenv(&cgiScriptName, "SCRIPT_NAME");
143	cgiGetenv(&cgiQueryString, "QUERY_STRING");
144	if(strcmp(cgiQueryString,"")==0 && argc>=2){
145	cgiQueryString=argv[1];
146	}else
147	fprintf(stderr,"cgiQueryString : %s\n",cgiQueryString);
148	cgiGetenv(&cgiRemoteHost, "REMOTE_HOST");
149	cgiGetenv(&cgiRemoteAddr, "REMOTE_ADDR");
150	cgiGetenv(&cgiAuthType, "AUTH_TYPE");
151	cgiGetenv(&cgiRemoteUser, "REMOTE_USER");
152	cgiGetenv(&cgiRemoteIdent, "REMOTE_IDENT");
153	/* 2.0: the content type string needs to be parsed and modified, so
154	copy it to a buffer. */
155	e = getenv("CONTENT_TYPE");
156	if (e) {
157	if (strlen(e) < sizeof(cgiContentTypeData)) {
158	strcpy(cgiContentType, e);
159	} else {
160	/* Truncate safely in the event of what is almost certainly
161	a hack attempt */
162	strncpy(cgiContentType, e, sizeof(cgiContentTypeData));
163	cgiContentType[sizeof(cgiContentTypeData) - 1] = '\0';
164	}
165	} else {
166	cgiContentType[0] = '\0';
167	}
168	/* Never null */
169	cgiMultipartBoundary = "";
170	/* 2.0: parse semicolon-separated additional parameters of the
171	content type. The one we're interested in is 'boundary'.
172	We discard the rest to make cgiContentType more useful
173	to the typical programmer. */
174	if (strchr(cgiContentType, ';')) {
175	char *sat = strchr(cgiContentType, ';');
176	while (sat) {
177	*sat = '\0';
178	sat++;
179	while (isspace(*sat)) {
180	sat++;
181	}
182	if (cgiStrBeginsNc(sat, "boundary=")) {
183	char *s;
184	cgiMultipartBoundary = sat + strlen("boundary=");
185	s = cgiMultipartBoundary;
186	while ((s) && (!isspace(s))) {
187	s++;
188	}
189	*s = '\0';
190	break;
191	} else {
192	sat = strchr(sat, ';');
193	}
194	}
195	}
196	cgiGetenv(&cgiContentLengthString, "CONTENT_LENGTH");
197	cgiContentLength = atoi(cgiContentLengthString);
198	if(cgiContentLength==0 && argc>=2){
199	cgiContentLength=strlen(argv[1]);
200	}
201	cgiGetenv(&cgiAccept, "HTTP_ACCEPT");
202	cgiGetenv(&cgiUserAgent, "HTTP_USER_AGENT");
203	cgiGetenv(&cgiReferrer, "HTTP_REFERER");
204	cgiGetenv(&cgiCookie, "HTTP_COOKIE");
205	#ifdef CGICDEBUG
206	CGICDEBUGSTART
207	fprintf(dout, "%d\n", cgiContentLength);
208	fprintf(dout, "%s\n", cgiRequestMethod);
209	fprintf(dout, "%s\n", cgiContentType);
210	CGICDEBUGEND
211	#endif /* CGICDEBUG */
212	#ifdef WIN32
213	/* 1.07: Must set stdin and stdout to binary mode */
214	/* 2.0: this is particularly crucial now and must not be removed */
215	_setmode( FCGI_fileno( stdin ), _O_BINARY );
216	_setmode( FCGI_fileno( stdout ), _O_BINARY );
217	#endif /* WIN32 */
218	cgiFormEntryFirst = 0;
219	cgiIn = FCGI_stdin;
220	cgiOut = FCGI_stdout;
221	cgiRestored = 0;
222
223
224	/* These five lines keep compilers from
225	producing warnings that argc and argv
226	are unused. They have no actual function. */
227	if (argc) {
228	if (argv[0]) {
229	cgiRestored = 0;
230	}
231	}
232
233
234	if (cgiStrEqNc(cgiRequestMethod, "post")) {
235	#ifdef CGICDEBUG
236	CGICDEBUGSTART
237	fprintf(dout, "POST recognized\n");
238	CGICDEBUGEND
239	#endif /* CGICDEBUG */
240	if (cgiStrEqNc(cgiContentType, "application/x-www-form-urlencoded")) {
241	#ifdef CGICDEBUG
242	CGICDEBUGSTART
243	fprintf(dout, "Calling PostFormInput\n");
244	CGICDEBUGEND
245	#endif /* CGICDEBUG */
246	if (cgiParsePostFormInput() != cgiParseSuccess) {
247	#ifdef CGICDEBUG
248	CGICDEBUGSTART
249	fprintf(dout, "PostFormInput failed\n");
250	CGICDEBUGEND
251	#endif /* CGICDEBUG */
252	cgiFreeResources();
253	return -1;
254	}
255	#ifdef CGICDEBUG
256	CGICDEBUGSTART
257	fprintf(dout, "PostFormInput succeeded\n");
258	CGICDEBUGEND
259	#endif /* CGICDEBUG */
260	} else if (cgiStrEqNc(cgiContentType, "multipart/form-data")) {
261	#ifdef CGICDEBUG
262	CGICDEBUGSTART
263	fprintf(dout, "Calling PostMultipartInput\n");
264	CGICDEBUGEND
265	#endif /* CGICDEBUG */
266	if (cgiParsePostMultipartInput() != cgiParseSuccess) {
267	#ifdef CGICDEBUG
268	CGICDEBUGSTART
269	fprintf(dout, "PostMultipartInput failed\n");
270	CGICDEBUGEND
271	#endif /* CGICDEBUG */
272	cgiFreeResources();
273	return -1;
274	}
275	#ifdef CGICDEBUG
276	CGICDEBUGSTART
277	fprintf(dout, "PostMultipartInput succeeded\n");
278	CGICDEBUGEND
279	#endif /* CGICDEBUG */
280	}
281	} else if (cgiStrEqNc(cgiRequestMethod, "get")) {
282	/* The spec says this should be taken care of by
283	the server, but... it isn't */
284	cgiContentLength = strlen(cgiQueryString);
285	if (cgiParseGetFormInput() != cgiParseSuccess) {
286	#ifdef CGICDEBUG
287	CGICDEBUGSTART
288	fprintf(dout, "GetFormInput failed\n");
289	CGICDEBUGEND
290	#endif /* CGICDEBUG */
291	cgiFreeResources();
292	return -1;
293	} else {
294	#ifdef CGICDEBUG
295	CGICDEBUGSTART
296	fprintf(dout, "GetFormInput succeeded\n");
297	CGICDEBUGEND
298	#endif /* CGICDEBUG */
299	}
300	}
301	result = cgiMain();
302	cgiFreeResources();
303	}
304	FCGI_Finish();
305	return result;
306	}
307
308	static void cgiGetenv(char *s, char var){
309	*s = getenv(var);
310	if (!(*s)) {
311	*s = "";
312	}
313	}
314
315	static cgiParseResultType cgiParsePostFormInput() {
316	char *input;
317	cgiParseResultType result;
318	if (!cgiContentLength) {
319	return cgiParseSuccess;
320	}
321	input = (char *) malloc(cgiContentLength);
322	if (!input) {
323	return cgiParseMemory;
324	}
325	if (((int) fread(input, 1, cgiContentLength, cgiIn))
326	!= cgiContentLength)
327	{
328	return cgiParseIO;
329	}
330	result = cgiParseFormInput(input, cgiContentLength);
331	free(input);
332	return result;
333	}
334
335	/* 2.0: A virtual datastream supporting putback of
336	enough characters to handle multipart boundaries easily.
337	A simple memset(&mp, 0, sizeof(mp)) is suitable initialization. */
338
339	typedef struct {
340	/* Buffer for putting characters back */
341	char putback[1024];
342	/* Position in putback from which next character will be read.
343	If readPos == writePos, then next character should
344	come from cgiIn. */
345	int readPos;
346	/* Position in putback to which next character will be put back.
347	If writePos catches up to readPos, as opposed to the other
348	way around, the stream no longer functions properly.
349	Calling code must guarantee that no more than
350	sizeof(putback) bytes are put back at any given time. */
351	int writePos;
352	/* Offset in the virtual datastream; can be compared
353	to cgiContentLength */
354	int offset;
355	} mpStream, *mpStreamPtr;
356
357	int mpRead(mpStreamPtr mpp, char *buffer, int len)
358	{
359	int ilen = len;
360	int got = 0;
361	while (len) {
362	if (mpp->readPos != mpp->writePos) {
363	*buffer++ = mpp->putback[mpp->readPos++];
364	mpp->readPos %= sizeof(mpp->putback);
365	got++;
366	len--;
367	} else {
368	break;
369	}
370	}
371	/* Refuse to read past the declared length in order to
372	avoid deadlock */
373	if (len > (cgiContentLength - mpp->offset)) {
374	len = cgiContentLength - mpp->offset;
375	}
376	if (len) {
377	int fgot = fread(buffer, 1, len, cgiIn);
378	if (fgot >= 0) {
379	mpp->offset += (got + fgot);
380	return got + fgot;
381	} else if (got > 0) {
382	mpp->offset += got;
383	return got;
384	} else {
385	/* EOF or error */
386	return fgot;
387	}
388	} else if (got) {
389	return got;
390	} else if (ilen) {
391	return EOF;
392	} else {
393	/* 2.01 */
394	return 0;
395	}
396	}
397
398	void mpPutBack(mpStreamPtr mpp, char *data, int len)
399	{
400	mpp->offset -= len;
401	while (len) {
402	mpp->putback[mpp->writePos++] = *data++;
403	mpp->writePos %= sizeof(mpp->putback);
404	len--;
405	}
406	}
407
408	/* This function copies the body to outf if it is not null, otherwise to
409	a newly allocated character buffer at *outP, which will be null
410	terminated; if both outf and outP are null the body is not stored.
411	If bodyLengthP is not null, the size of the body in bytes is stored
412	to bodyLengthP, not including any terminating null added to outP.
413	If 'first' is nonzero, a preceding newline is not expected before
414	the boundary. If 'first' is zero, a preceding newline is expected.
415	Upon return mpp is positioned after the boundary and its trailing
416	newline, if any; if the boundary is followed by -- the next two
417	characters read after this function returns will be --. Upon error,
418	if outP is not null, outP is a null pointer; bodyLengthP
419	is set to zero. Returns cgiParseSuccess, cgiParseMemory
420	or cgiParseIO. */
421
422	static cgiParseResultType afterNextBoundary(mpStreamPtr mpp,
423	FILE *outf,
424	char **outP,
425	int *bodyLengthP,
426	int first
427	);
428
429	static int readHeaderLine(
430	mpStreamPtr mpp,
431	char *attr,
432	int attrSpace,
433	char *value,
434	int valueSpace);
435
436	static void decomposeValue(char *value,
437	char *mvalue, int mvalueSpace,
438	char **argNames,
439	char **argValues,
440	int argValueSpace);
441
442	/* tfileName must be 1024 bytes to ensure adequacy on
443	win32 (1024 exceeds the maximum path length and
444	certainly exceeds observed behavior of _tmpnam).
445	May as well also be 1024 bytes on Unix, although actual
446	length is strlen(cgiTempDir) + a short unique pattern. */
447
448	static cgiParseResultType getTempFileName(char *tfileName);
449
450	static cgiParseResultType cgiParsePostMultipartInput() {
451	cgiParseResultType result;
452	cgiFormEntry n = 0, l = 0;
453	int got;
454	FILE *outf = 0;
455	char *out = 0;
456	char tfileName[1024];
457	mpStream mp;
458	mpStreamPtr mpp = &mp;
459	memset(&mp, 0, sizeof(mp));
460	if (!cgiContentLength) {
461	return cgiParseSuccess;
462	}
463	/* Read first boundary, including trailing newline */
464	result = afterNextBoundary(mpp, 0, 0, 0, 1);
465	if (result == cgiParseIO) {
466	/* An empty submission is not necessarily an error */
467	return cgiParseSuccess;
468	} else if (result != cgiParseSuccess) {
469	return result;
470	}
471	while (1) {
472	char d[1024];
473	char fvalue[1024];
474	char fname[1024];
475	int bodyLength = 0;
476	char ffileName[1024];
477	char fcontentType[1024];
478	char attr[1024];
479	char value[1024];
480	fvalue[0] = 0;
481	fname[0] = 0;
482	ffileName[0] = 0;
483	fcontentType[0] = 0;
484	out = 0;
485	outf = 0;
486	/* Check for EOF */
487	got = mpRead(mpp, d, 2);
488	if (got < 2) {
489	/* Crude EOF */
490	break;
491	}
492	if ((d[0] == '-') && (d[1] == '-')) {
493	/* Graceful EOF */
494	break;
495	}
496	mpPutBack(mpp, d, 2);
497	/* Read header lines until end of header */
498	while (readHeaderLine(
499	mpp, attr, sizeof(attr), value, sizeof(value)))
500	{
501	char *argNames[3];
502	char *argValues[2];
503	/* Content-Disposition: form-data;
504	name="test"; filename="googley.gif" */
505	if (cgiStrEqNc(attr, "Content-Disposition")) {
506	argNames[0] = "name";
507	argNames[1] = "filename";
508	argNames[2] = 0;
509	argValues[0] = fname;
510	argValues[1] = ffileName;
511	decomposeValue(value,
512	fvalue, sizeof(fvalue),
513	argNames,
514	argValues,
515	1024);
516	} else if (cgiStrEqNc(attr, "Content-Type")) {
517	argNames[0] = 0;
518	decomposeValue(value,
519	fcontentType, sizeof(fcontentType),
520	argNames,
521	0,
522	0);
523	}
524	}
525	if (!cgiStrEqNc(fvalue, "form-data")) {
526	/* Not form data */
527	continue;
528	}
529	/* Body is everything from here until the next
530	boundary. So, set it aside and move past boundary.
531	If a filename was submitted as part of the
532	disposition header, store to a temporary file.
533	Otherwise, store to a memory buffer (it is
534	presumably a regular form field). */
535	if (strlen(ffileName)) {
536	if (getTempFileName(tfileName) != cgiParseSuccess) {
537	return cgiParseIO;
538	}
539	outf = fopen(tfileName, "w+b");
540	} else {
541	outf = 0;
542	tfileName[0] = '\0';
543	}
544	result = afterNextBoundary(mpp, outf, &out, &bodyLength, 0);
545	if (result != cgiParseSuccess) {
546	/* Lack of a boundary here is an error. */
547	if (outf) {
548	fclose(outf);
549	unlink(tfileName);
550	}
551	if (out) {
552	free(out);
553	}
554	return result;
555	}
556	/* OK, we have a new pair, add it to the list. */
557	n = (cgiFormEntry *) malloc(sizeof(cgiFormEntry));
558	if (!n) {
559	goto outOfMemory;
560	}
561	memset(n, 0, sizeof(cgiFormEntry));
562	/* 2.01: one of numerous new casts required
563	to please C++ compilers */
564	n->attr = (char *) malloc(strlen(fname) + 1);
565	if (!n->attr) {
566	goto outOfMemory;
567	}
568	strcpy(n->attr, fname);
569	if (out) {
570	n->value = out;
571	out = 0;
572	} else if (outf) {
573	n->value = (char *) malloc(1);
574	if (!n->value) {
575	goto outOfMemory;
576	}
577	n->value[0] = '\0';
578	fclose(outf);
579	}
580	n->valueLength = bodyLength;
581	n->next = 0;
582	if (!l) {
583	cgiFormEntryFirst = n;
584	} else {
585	l->next = n;
586	}
587	n->fileName = (char *) malloc(strlen(ffileName) + 1);
588	if (!n->fileName) {
589	goto outOfMemory;
590	}
591	strcpy(n->fileName, ffileName);
592	n->contentType = (char *) malloc(strlen(fcontentType) + 1);
593	if (!n->contentType) {
594	goto outOfMemory;
595	}
596	strcpy(n->contentType, fcontentType);
597	n->tfileName = (char *) malloc(strlen(tfileName) + 1);
598	if (!n->tfileName) {
599	goto outOfMemory;
600	}
601	strcpy(n->tfileName, tfileName);
602
603	l = n;
604	}
605	return cgiParseSuccess;
606	outOfMemory:
607	if (n) {
608	if (n->attr) {
609	free(n->attr);
610	}
611	if (n->value) {
612	free(n->value);
613	}
614	if (n->fileName) {
615	free(n->fileName);
616	}
617	if (n->tfileName) {
618	free(n->tfileName);
619	}
620	if (n->contentType) {
621	free(n->contentType);
622	}
623	free(n);
624	}
625	if (out) {
626	free(out);
627	}
628	if (outf) {
629	fclose(outf);
630	unlink(tfileName);
631	}
632	return cgiParseMemory;
633	}
634
635	static cgiParseResultType getTempFileName(char *tfileName)
636	{
637	#ifndef WIN32
638	/* Unix. Use the robust 'mkstemp' function to create
639	a temporary file that is truly unique, with
640	permissions that are truly safe. The
641	fopen-for-write destroys any bogus information
642	written by potential hackers during the brief
643	window between the file's creation and the
644	chmod call (glibc 2.0.6 and lower might
645	otherwise have allowed this). */
646	int outfd;
647	strcpy(tfileName, cgicTempDir "/cgicXXXXXX");
648	outfd = mkstemp(tfileName);
649	if (outfd == -1) {
650	return cgiParseIO;
651	}
652	close(outfd);
653	/* Fix the permissions */
654	if (chmod(tfileName, 0600) != 0) {
655	unlink(tfileName);
656	return cgiParseIO;
657	}
658	#else
659	/* Non-Unix. Do what we can. */
660	if (!tmpnam(tfileName)) {
661	return cgiParseIO;
662	}
663	#endif
664	return cgiParseSuccess;
665	}
666
667
668	#define APPEND(string, char) \
669	{ \
670	if ((string##Len + 1) < string##Space) { \
671	string[string##Len++] = (char); \
672	} \
673	}
674
675	#define RAPPEND(string, ch) \
676	{ \
677	if ((string##Len + 1) == string##Space) { \
678	char *sold = string; \
679	string##Space *= 2; \
680	string = (char *) realloc(string, string##Space); \
681	if (!string) { \
682	string = sold; \
683	goto outOfMemory; \
684	} \
685	} \
686	string[string##Len++] = (ch); \
687	}
688
689	#define BAPPEND(ch) \
690	{ \
691	if (outf) { \
692	putc(ch, outf); \
693	outLen++; \
694	} else if (out) { \
695	RAPPEND(out, ch); \
696	} \
697	}
698
699	cgiParseResultType afterNextBoundary(mpStreamPtr mpp, FILE outf, char *outP,
700	int *bodyLengthP, int first)
701	{
702	int outLen = 0;
703	int outSpace = 256;
704	char *out = 0;
705	cgiParseResultType result;
706	int boffset;
707	int got;
708	char d[2];
709	/* This is large enough, because the buffer into which the
710	original boundary string is fetched is shorter by more
711	than four characters due to the space required for
712	the attribute name */
713	char workingBoundaryData[1024];
714	char *workingBoundary = workingBoundaryData;
715	int workingBoundaryLength;
716	if ((!outf) && (outP)) {
717	out = (char *) malloc(outSpace);
718	if (!out) {
719	goto outOfMemory;
720	}
721	}
722	boffset = 0;
723	sprintf(workingBoundaryData, "\r\n--%s", cgiMultipartBoundary);
724	if (first) {
725	workingBoundary = workingBoundaryData + 2;
726	}
727	workingBoundaryLength = strlen(workingBoundary);
728	while (1) {
729	got = mpRead(mpp, d, 1);
730	if (got != 1) {
731	/* 2.01: cgiParseIO, not cgiFormIO */
732	result = cgiParseIO;
733	goto error;
734	}
735	if (d[0] == workingBoundary[boffset]) {
736	/* We matched the next byte of the boundary.
737	Keep track of our progress into the
738	boundary and don't emit anything. */
739	boffset++;
740	if (boffset == workingBoundaryLength) {
741	break;
742	}
743	} else if (boffset > 0) {
744	/* We matched part, but not all, of the
745	boundary. Now we have to be careful:
746	put back all except the first
747	character and try again. The
748	real boundary could begin in the
749	middle of a false match. We can
750	emit the first character only so far. */
751	BAPPEND(workingBoundary[0]);
752	mpPutBack(mpp,
753	workingBoundary + 1, boffset - 1);
754	mpPutBack(mpp, d, 1);
755	boffset = 0;
756	} else {
757	/* Not presently in the middle of a boundary
758	match; just emit the character. */
759	BAPPEND(d[0]);
760	}
761	}
762	/* Read trailing newline or -- EOF marker. A literal EOF here
763	would be an error in the input stream. */
764	got = mpRead(mpp, d, 2);
765	if (got != 2) {
766	result = cgiParseIO;
767	goto error;
768	}
769	if ((d[0] == '\r') && (d[1] == '\n')) {
770	/* OK, EOL */
771	} else if (d[0] == '-') {
772	/* Probably EOF, but we check for
773	that later */
774	mpPutBack(mpp, d, 2);
775	}
776	if (out && outSpace) {
777	char *oout = out;
778	out[outLen] = '\0';
779	out = (char *) realloc(out, outLen + 1);
780	if (!out) {
781	/* Surprising if it happens; and not fatal! We were
782	just trying to give some space back. We can
783	keep it if we have to. */
784	out = oout;
785	}
786	*outP = out;
787	}
788	if (bodyLengthP) {
789	*bodyLengthP = outLen;
790	}
791	return cgiParseSuccess;
792	outOfMemory:
793	result = cgiParseMemory;
794	if (outP) {
795	if (out) {
796	free(out);
797	}
798	*outP = '\0';
799	}
800	error:
801	if (bodyLengthP) {
802	*bodyLengthP = 0;
803	}
804	if (out) {
805	free(out);
806	}
807	if (outP) {
808	*outP = 0;
809	}
810	return result;
811	}
812
813	static void decomposeValue(char *value,
814	char *mvalue, int mvalueSpace,
815	char **argNames,
816	char **argValues,
817	int argValueSpace)
818	{
819	char argName[1024];
820	int argNameSpace = sizeof(argName);
821	int argNameLen = 0;
822	int mvalueLen = 0;
823	char *argValue;
824	int argNum = 0;
825	while (argNames[argNum]) {
826	if (argValueSpace) {
827	argValues[argNum][0] = '\0';
828	}
829	argNum++;
830	}
831	while (isspace(*value)) {
832	value++;
833	}
834	/* Quoted mvalue */
835	if (*value == '\"') {
836	value++;
837	while ((value) && (value != '\"')) {
838	APPEND(mvalue, *value);
839	value++;
840	}
841	while ((value) && (value != ';')) {
842	value++;
843	}
844	} else {
845	/* Unquoted mvalue */
846	while ((value) && (value != ';')) {
847	APPEND(mvalue, *value);
848	value++;
849	}
850	}
851	if (mvalueSpace) {
852	mvalue[mvalueLen] = '\0';
853	}
854	while (*value == ';') {
855	int argNum;
856	int argValueLen = 0;
857	/* Skip the ; between parameters */
858	value++;
859	/* Now skip leading whitespace */
860	while ((value) && (isspace(value))) {
861	value++;
862	}
863	/* Now read the parameter name */
864	argNameLen = 0;
865	while ((value) && (isalnum(value))) {
866	APPEND(argName, *value);
867	value++;
868	}
869	if (argNameSpace) {
870	argName[argNameLen] = '\0';
871	}
872	while ((value) && isspace(value)) {
873	value++;
874	}
875	if (*value != '=') {
876	/* Malformed line */
877	return;
878	}
879	value++;
880	while ((value) && isspace(value)) {
881	value++;
882	}
883	/* Find the parameter in the argument list, if present */
884	argNum = 0;
885	argValue = 0;
886	while (argNames[argNum]) {
887	if (cgiStrEqNc(argName, argNames[argNum])) {
888	argValue = argValues[argNum];
889	break;
890	}
891	argNum++;
892	}
893	/* Finally, read the parameter value */
894	if (*value == '\"') {
895	value++;
896	while ((value) && (value != '\"')) {
897	if (argValue) {
898	APPEND(argValue, *value);
899	}
900	value++;
901	}
902	while ((value) && (value != ';')) {
903	value++;
904	}
905	} else {
906	/* Unquoted value */
907	while ((value) && (value != ';')) {
908	if (argNames[argNum]) {
909	APPEND(argValue, *value);
910	}
911	value++;
912	}
913	}
914	if (argValueSpace) {
915	argValue[argValueLen] = '\0';
916	}
917	}
918	}
919
920	static int readHeaderLine(
921	mpStreamPtr mpp,
922	char *attr,
923	int attrSpace,
924	char *value,
925	int valueSpace)
926	{
927	int attrLen = 0;
928	int valueLen = 0;
929	int valueFound = 0;
930	while (1) {
931	char d[1];
932	int got = mpRead(mpp, d, 1);
933	if (got != 1) {
934	return 0;
935	}
936	if (d[0] == '\r') {
937	got = mpRead(mpp, d, 1);
938	if (got == 1) {
939	if (d[0] == '\n') {
940	/* OK */
941	} else {
942	mpPutBack(mpp, d, 1);
943	}
944	}
945	break;
946	} else if (d[0] == '\n') {
947	break;
948	} else if ((d[0] == ':') && attrLen) {
949	valueFound = 1;
950	while (mpRead(mpp, d, 1) == 1) {
951	if (!isspace(d[0])) {
952	mpPutBack(mpp, d, 1);
953	break;
954	}
955	}
956	} else if (!valueFound) {
957	if (!isspace(*d)) {
958	if (attrLen < (attrSpace - 1)) {
959	attr[attrLen++] = *d;
960	}
961	}
962	} else if (valueFound) {
963	if (valueLen < (valueSpace - 1)) {
964	value[valueLen++] = *d;
965	}
966	}
967	}
968	if (attrSpace) {
969	attr[attrLen] = '\0';
970	}
971	if (valueSpace) {
972	value[valueLen] = '\0';
973	}
974	if (attrLen && valueLen) {
975	return 1;
976	} else {
977	return 0;
978	}
979	}
980
981	static cgiParseResultType cgiParseGetFormInput() {
982	return cgiParseFormInput(cgiQueryString, cgiContentLength);
983	}
984
985	typedef enum {
986	cgiEscapeRest,
987	cgiEscapeFirst,
988	cgiEscapeSecond
989	} cgiEscapeState;
990
991	typedef enum {
992	cgiUnescapeSuccess,
993	cgiUnescapeMemory
994	} cgiUnescapeResultType;
995
996	static cgiUnescapeResultType cgiUnescapeChars(char *sp, char cp, int len);
997
998	static cgiParseResultType cgiParseFormInput(char *data, int length) {
999	/* Scan for pairs, unescaping and storing them as they are found. */
1000	int pos = 0;
1001	cgiFormEntry *n;
1002	cgiFormEntry *l = 0;
1003	while (pos != length) {
1004	int foundEq = 0;
1005	int foundAmp = 0;
1006	int start = pos;
1007	int len = 0;
1008	char *attr;
1009	char *value;
1010	while (pos != length) {
1011	if (data[pos] == '=') {
1012	foundEq = 1;
1013	pos++;
1014	break;
1015	}
1016	pos++;
1017	len++;
1018	}
1019	if (!foundEq) {
1020	break;
1021	}
1022	if (cgiUnescapeChars(&attr, data+start, len)
1023	!= cgiUnescapeSuccess) {
1024	return cgiParseMemory;
1025	}
1026	start = pos;
1027	len = 0;
1028	while (pos != length) {
1029	if (data[pos] == '&') {
1030	foundAmp = 1;
1031	pos++;
1032	break;
1033	}
1034	pos++;
1035	len++;
1036	}
1037	/* The last pair probably won't be followed by a &, but
1038	that's fine, so check for that after accepting it */
1039	if (cgiUnescapeChars(&value, data+start, len)
1040	!= cgiUnescapeSuccess) {
1041	free(attr);
1042	return cgiParseMemory;
1043	}
1044	/* OK, we have a new pair, add it to the list. */
1045	n = (cgiFormEntry *) malloc(sizeof(cgiFormEntry));
1046	if (!n) {
1047	free(attr);
1048	free(value);
1049	return cgiParseMemory;
1050	}
1051	n->attr = attr;
1052	n->value = value;
1053	n->valueLength = strlen(n->value);
1054	n->fileName = (char *) malloc(1);
1055	if (!n->fileName) {
1056	free(attr);
1057	free(value);
1058	free(n);
1059	return cgiParseMemory;
1060	}
1061	n->fileName[0] = '\0';
1062	n->contentType = (char *) malloc(1);
1063	if (!n->contentType) {
1064	free(attr);
1065	free(value);
1066	free(n->fileName);
1067	free(n);
1068	return cgiParseMemory;
1069	}
1070	n->contentType[0] = '\0';
1071	n->tfileName = (char *) malloc(1);
1072	if (!n->tfileName) {
1073	free(attr);
1074	free(value);
1075	free(n->fileName);
1076	free(n->contentType);
1077	free(n);
1078	return cgiParseMemory;
1079	}
1080	n->tfileName[0] = '\0';
1081	n->next = 0;
1082	if (!l) {
1083	cgiFormEntryFirst = n;
1084	} else {
1085	l->next = n;
1086	}
1087	l = n;
1088	if (!foundAmp) {
1089	break;
1090	}
1091	}
1092	return cgiParseSuccess;
1093	}
1094
1095	static int cgiHexValue[256];
1096
1097	cgiUnescapeResultType cgiUnescapeChars(char *sp, char cp, int len) {
1098	char *s;
1099	cgiEscapeState escapeState = cgiEscapeRest;
1100	int escapedValue = 0;
1101	int srcPos = 0;
1102	int dstPos = 0;
1103	s = (char *) malloc(len + 1);
1104	if (!s) {
1105	return cgiUnescapeMemory;
1106	}
1107	while (srcPos < len) {
1108	int ch = cp[srcPos];
1109	switch (escapeState) {
1110	case cgiEscapeRest:
1111	if (ch == '%') {
1112	escapeState = cgiEscapeFirst;
1113	} else if (ch == '+') {
1114	s[dstPos++] = ' ';
1115	} else {
1116	s[dstPos++] = ch;
1117	}
1118	break;
1119	case cgiEscapeFirst:
1120	escapedValue = cgiHexValue[ch] << 4;
1121	escapeState = cgiEscapeSecond;
1122	break;
1123	case cgiEscapeSecond:
1124	escapedValue += cgiHexValue[ch];
1125	s[dstPos++] = escapedValue;
1126	escapeState = cgiEscapeRest;
1127	break;
1128	}
1129	srcPos++;
1130	}
1131	s[dstPos] = '\0';
1132	*sp = s;
1133	return cgiUnescapeSuccess;
1134	}
1135
1136	static void cgiSetupConstants() {
1137	int i;
1138	for (i=0; (i < 256); i++) {
1139	cgiHexValue[i] = 0;
1140	}
1141	cgiHexValue['0'] = 0;
1142	cgiHexValue['1'] = 1;
1143	cgiHexValue['2'] = 2;
1144	cgiHexValue['3'] = 3;
1145	cgiHexValue['4'] = 4;
1146	cgiHexValue['5'] = 5;
1147	cgiHexValue['6'] = 6;
1148	cgiHexValue['7'] = 7;
1149	cgiHexValue['8'] = 8;
1150	cgiHexValue['9'] = 9;
1151	cgiHexValue['A'] = 10;
1152	cgiHexValue['B'] = 11;
1153	cgiHexValue['C'] = 12;
1154	cgiHexValue['D'] = 13;
1155	cgiHexValue['E'] = 14;
1156	cgiHexValue['F'] = 15;
1157	cgiHexValue['a'] = 10;
1158	cgiHexValue['b'] = 11;
1159	cgiHexValue['c'] = 12;
1160	cgiHexValue['d'] = 13;
1161	cgiHexValue['e'] = 14;
1162	cgiHexValue['f'] = 15;
1163	}
1164
1165	static void cgiFreeResources() {
1166	cgiFormEntry *c = cgiFormEntryFirst;
1167	cgiFormEntry *n;
1168	while (c) {
1169	n = c->next;
1170	free(c->attr);
1171	free(c->value);
1172	free(c->fileName);
1173	free(c->contentType);
1174	if (strlen(c->tfileName)) {
1175	unlink(c->tfileName);
1176	}
1177	free(c->tfileName);
1178	free(c);
1179	c = n;
1180	}
1181	/* If the cgi environment was restored from a saved environment,
1182	then these are in allocated space and must also be freed */
1183	if (cgiRestored) {
1184	free(cgiServerSoftware);
1185	free(cgiServerName);
1186	free(cgiGatewayInterface);
1187	free(cgiServerProtocol);
1188	free(cgiServerPort);
1189	free(cgiRequestMethod);
1190	free(cgiPathInfo);
1191	free(cgiPathTranslated);
1192	free(cgiScriptName);
1193	free(cgiQueryString);
1194	free(cgiRemoteHost);
1195	free(cgiRemoteAddr);
1196	free(cgiAuthType);
1197	free(cgiRemoteUser);
1198	free(cgiRemoteIdent);
1199	free(cgiContentType);
1200	free(cgiAccept);
1201	free(cgiUserAgent);
1202	free(cgiReferrer);
1203	}
1204	/* 2.0: to clean up the environment for cgiReadEnvironment,
1205	we must set these correctly */
1206	cgiFormEntryFirst = 0;
1207	cgiRestored = 0;
1208	}
1209
1210	static cgiFormResultType cgiFormEntryString(
1211	cgiFormEntry e, char result, int max, int newlines);
1212
1213	static cgiFormEntry cgiFormEntryFindFirst(char name);
1214	static cgiFormEntry *cgiFormEntryFindNext();
1215
1216	cgiFormResultType cgiFormString(
1217	char name, char result, int max) {
1218	cgiFormEntry *e;
1219	e = cgiFormEntryFindFirst(name);
1220	if (!e) {
1221	strcpy(result, "");
1222	return cgiFormNotFound;
1223	}
1224	return cgiFormEntryString(e, result, max, 1);
1225	}
1226
1227	cgiFormResultType cgiFormFileName(
1228	char name, char result, int resultSpace)
1229	{
1230	cgiFormEntry *e;
1231	int resultLen = 0;
1232	char *s;
1233	e = cgiFormEntryFindFirst(name);
1234	if (!e) {
1235	strcpy(result, "");
1236	return cgiFormNotFound;
1237	}
1238	s = e->fileName;
1239	while (*s) {
1240	APPEND(result, *s);
1241	s++;
1242	}
1243	if (resultSpace) {
1244	result[resultLen] = '\0';
1245	}
1246	if (!strlen(e->fileName)) {
1247	return cgiFormNoFileName;
1248	} else if (((int) strlen(e->fileName)) > (resultSpace - 1)) {
1249	return cgiFormTruncated;
1250	} else {
1251	return cgiFormSuccess;
1252	}
1253	}
1254
1255	cgiFormResultType cgiFormFileContentType(
1256	char name, char result, int resultSpace)
1257	{
1258	cgiFormEntry *e;
1259	int resultLen = 0;
1260	char *s;
1261	e = cgiFormEntryFindFirst(name);
1262	if (!e) {
1263	if (resultSpace) {
1264	result[0] = '\0';
1265	}
1266	return cgiFormNotFound;
1267	}
1268	s = e->contentType;
1269	while (*s) {
1270	APPEND(result, *s);
1271	s++;
1272	}
1273	if (resultSpace) {
1274	result[resultLen] = '\0';
1275	}
1276	if (!strlen(e->contentType)) {
1277	return cgiFormNoContentType;
1278	} else if (((int) strlen(e->contentType)) > (resultSpace - 1)) {
1279	return cgiFormTruncated;
1280	} else {
1281	return cgiFormSuccess;
1282	}
1283	}
1284
1285	cgiFormResultType cgiFormFileSize(
1286	char name, int sizeP)
1287	{
1288	cgiFormEntry *e;
1289	e = cgiFormEntryFindFirst(name);
1290	if (!e) {
1291	if (sizeP) {
1292	*sizeP = 0;
1293	}
1294	return cgiFormNotFound;
1295	} else if (!strlen(e->tfileName)) {
1296	if (sizeP) {
1297	*sizeP = 0;
1298	}
1299	return cgiFormNotAFile;
1300	} else {
1301	if (sizeP) {
1302	*sizeP = e->valueLength;
1303	}
1304	return cgiFormSuccess;
1305	}
1306	}
1307
1308	typedef struct cgiFileStruct {
1309	FILE *in;
1310	} cgiFile;
1311
1312	cgiFormResultType cgiFormFileOpen(
1313	char name, cgiFilePtr cfpp)
1314	{
1315	cgiFormEntry *e;
1316	cgiFilePtr cfp;
1317	e = cgiFormEntryFindFirst(name);
1318	if (!e) {
1319	*cfpp = 0;
1320	return cgiFormNotFound;
1321	}
1322	if (!strlen(e->tfileName)) {
1323	*cfpp = 0;
1324	return cgiFormNotAFile;
1325	}
1326	cfp = (cgiFilePtr) malloc(sizeof(cgiFile));
1327	if (!cfp) {
1328	*cfpp = 0;
1329	return cgiFormMemory;
1330	}
1331	cfp->in = fopen(e->tfileName, "rb");
1332	if (!cfp->in) {
1333	free(cfp);
1334	return cgiFormIO;
1335	}
1336	*cfpp = cfp;
1337	return cgiFormSuccess;
1338	}
1339
1340	cgiFormResultType cgiFormFileRead(
1341	cgiFilePtr cfp, char *buffer,
1342	int bufferSize, int *gotP)
1343	{
1344	int got = 0;
1345	if (!cfp) {
1346	return cgiFormOpenFailed;
1347	}
1348	got = fread(buffer, 1, bufferSize, cfp->in);
1349	if (got <= 0) {
1350	return cgiFormEOF;
1351	}
1352	*gotP = got;
1353	return cgiFormSuccess;
1354	}
1355
1356	cgiFormResultType cgiFormFileClose(cgiFilePtr cfp)
1357	{
1358	if (!cfp) {
1359	return cgiFormOpenFailed;
1360	}
1361	fclose(cfp->in);
1362	free(cfp);
1363	return cgiFormSuccess;
1364	}
1365
1366	cgiFormResultType cgiFormStringNoNewlines(
1367	char name, char result, int max) {
1368	cgiFormEntry *e;
1369	e = cgiFormEntryFindFirst(name);
1370	if (!e) {
1371	strcpy(result, "");
1372	return cgiFormNotFound;
1373	}
1374	return cgiFormEntryString(e, result, max, 0);
1375	}
1376
1377	cgiFormResultType cgiFormStringMultiple(
1378	char name, char **result) {
1379	char **stringArray;
1380	cgiFormEntry *e;
1381	int i;
1382	int total = 0;
1383	/* Make two passes. One would be more efficient, but this
1384	function is not commonly used. The select menu and
1385	radio box functions are faster. */
1386	e = cgiFormEntryFindFirst(name);
1387	if (e != 0) {
1388	do {
1389	total++;
1390	} while ((e = cgiFormEntryFindNext()) != 0);
1391	}
1392	stringArray = (char *) malloc(sizeof(char ) * (total + 1));
1393	if (!stringArray) {
1394	*result = 0;
1395	return cgiFormMemory;
1396	}
1397	/* initialize all entries to null; the last will stay that way */
1398	for (i=0; (i <= total); i++) {
1399	stringArray[i] = 0;
1400	}
1401	/* Now go get the entries */
1402	e = cgiFormEntryFindFirst(name);
1403	#ifdef CGICDEBUG
1404	CGICDEBUGSTART
1405	fprintf(dout, "StringMultiple Beginning\n");
1406	CGICDEBUGEND
1407	#endif /* CGICDEBUG */
1408	if (e) {
1409	i = 0;
1410	do {
1411	int max = (int) (strlen(e->value) + 1);
1412	stringArray[i] = (char *) malloc(max);
1413	if (stringArray[i] == 0) {
1414	/* Memory problems */
1415	cgiStringArrayFree(stringArray);
1416	*result = 0;
1417	return cgiFormMemory;
1418	}
1419	strcpy(stringArray[i], e->value);
1420	cgiFormEntryString(e, stringArray[i], max, 1);
1421	i++;
1422	} while ((e = cgiFormEntryFindNext()) != 0);
1423	*result = stringArray;
1424	#ifdef CGICDEBUG
1425	CGICDEBUGSTART
1426	fprintf(dout, "StringMultiple Succeeding\n");
1427	CGICDEBUGEND
1428	#endif /* CGICDEBUG */
1429	return cgiFormSuccess;
1430	} else {
1431	*result = stringArray;
1432	#ifdef CGICDEBUG
1433	CGICDEBUGSTART
1434	fprintf(dout, "StringMultiple found nothing\n");
1435	CGICDEBUGEND
1436	#endif /* CGICDEBUG */
1437	return cgiFormNotFound;
1438	}
1439	}
1440
1441	cgiFormResultType cgiFormStringSpaceNeeded(
1442	char name, int result) {
1443	cgiFormEntry *e;
1444	e = cgiFormEntryFindFirst(name);
1445	if (!e) {
1446	*result = 1;
1447	return cgiFormNotFound;
1448	}
1449	*result = ((int) strlen(e->value)) + 1;
1450	return cgiFormSuccess;
1451	}
1452
1453	static cgiFormResultType cgiFormEntryString(
1454	cgiFormEntry e, char result, int max, int newlines) {
1455	char dp, sp;
1456	int truncated = 0;
1457	int len = 0;
1458	int avail = max-1;
1459	int crCount = 0;
1460	int lfCount = 0;
1461	dp = result;
1462	sp = e->value;
1463	while (1) {
1464	int ch;
1465	/* 1.07: don't check for available space now.
1466	We check for it immediately before adding
1467	an actual character. 1.06 handled the
1468	trailing null of the source string improperly,
1469	resulting in a cgiFormTruncated error. */
1470	ch = *sp;
1471	/* Fix the CR/LF, LF, CR nightmare: watch for
1472	consecutive bursts of CRs and LFs in whatever
1473	pattern, then actually output the larger number
1474	of LFs. Consistently sane, yet it still allows
1475	consecutive blank lines when the user
1476	actually intends them. */
1477	if ((ch == 13) \|\| (ch == 10)) {
1478	if (ch == 13) {
1479	crCount++;
1480	} else {
1481	lfCount++;
1482	}
1483	} else {
1484	if (crCount \|\| lfCount) {
1485	int lfsAdd = crCount;
1486	if (lfCount > crCount) {
1487	lfsAdd = lfCount;
1488	}
1489	/* Stomp all newlines if desired */
1490	if (!newlines) {
1491	lfsAdd = 0;
1492	}
1493	while (lfsAdd) {
1494	if (len >= avail) {
1495	truncated = 1;
1496	break;
1497	}
1498	*dp = 10;
1499	dp++;
1500	lfsAdd--;
1501	len++;
1502	}
1503	crCount = 0;
1504	lfCount = 0;
1505	}
1506	if (ch == '\0') {
1507	/* The end of the source string */
1508	break;
1509	}
1510	/* 1.06: check available space before adding
1511	the character, because a previously added
1512	LF may have brought us to the limit */
1513	if (len >= avail) {
1514	truncated = 1;
1515	break;
1516	}
1517	*dp = ch;
1518	dp++;
1519	len++;
1520	}
1521	sp++;
1522	}
1523	*dp = '\0';
1524	if (truncated) {
1525	return cgiFormTruncated;
1526	} else if (!len) {
1527	return cgiFormEmpty;
1528	} else {
1529	return cgiFormSuccess;
1530	}
1531	}
1532
1533	static int cgiFirstNonspaceChar(char *s);
1534
1535	cgiFormResultType cgiFormInteger(
1536	char name, int result, int defaultV) {
1537	cgiFormEntry *e;
1538	int ch;
1539	e = cgiFormEntryFindFirst(name);
1540	if (!e) {
1541	*result = defaultV;
1542	return cgiFormNotFound;
1543	}
1544	if (!strlen(e->value)) {
1545	*result = defaultV;
1546	return cgiFormEmpty;
1547	}
1548	ch = cgiFirstNonspaceChar(e->value);
1549	if (!(isdigit(ch)) && (ch != '-') && (ch != '+')) {
1550	*result = defaultV;
1551	return cgiFormBadType;
1552	} else {
1553	*result = atoi(e->value);
1554	return cgiFormSuccess;
1555	}
1556	}
1557
1558	cgiFormResultType cgiFormIntegerBounded(
1559	char name, int result, int min, int max, int defaultV) {
1560	cgiFormResultType error = cgiFormInteger(name, result, defaultV);
1561	if (error != cgiFormSuccess) {
1562	return error;
1563	}
1564	if (*result < min) {
1565	*result = min;
1566	return cgiFormConstrained;
1567	}
1568	if (*result > max) {
1569	*result = max;
1570	return cgiFormConstrained;
1571	}
1572	return cgiFormSuccess;
1573	}
1574
1575	cgiFormResultType cgiFormDouble(
1576	char name, double result, double defaultV) {
1577	cgiFormEntry *e;
1578	int ch;
1579	e = cgiFormEntryFindFirst(name);
1580	if (!e) {
1581	*result = defaultV;
1582	return cgiFormNotFound;
1583	}
1584	if (!strlen(e->value)) {
1585	*result = defaultV;
1586	return cgiFormEmpty;
1587	}
1588	ch = cgiFirstNonspaceChar(e->value);
1589	if (!(isdigit(ch)) && (ch != '.') && (ch != '-') && (ch != '+')) {
1590	*result = defaultV;
1591	return cgiFormBadType;
1592	} else {
1593	*result = atof(e->value);
1594	return cgiFormSuccess;
1595	}
1596	}
1597
1598	cgiFormResultType cgiFormDoubleBounded(
1599	char name, double result, double min, double max, double defaultV) {
1600	cgiFormResultType error = cgiFormDouble(name, result, defaultV);
1601	if (error != cgiFormSuccess) {
1602	return error;
1603	}
1604	if (*result < min) {
1605	*result = min;
1606	return cgiFormConstrained;
1607	}
1608	if (*result > max) {
1609	*result = max;
1610	return cgiFormConstrained;
1611	}
1612	return cgiFormSuccess;
1613	}
1614
1615	cgiFormResultType cgiFormSelectSingle(
1616	char name, char *choicesText, int choicesTotal,
1617	int *result, int defaultV)
1618	{
1619	cgiFormEntry *e;
1620	int i;
1621	e = cgiFormEntryFindFirst(name);
1622	#ifdef CGICDEBUG
1623	CGICDEBUGSTART
1624	fprintf(dout, "%d\n", (int) e);
1625	CGICDEBUGEND
1626	#endif /* CGICDEBUG */
1627	if (!e) {
1628	*result = defaultV;
1629	return cgiFormNotFound;
1630	}
1631	for (i=0; (i < choicesTotal); i++) {
1632	#ifdef CGICDEBUG
1633	CGICDEBUGSTART
1634	fprintf(dout, "%s %s\n", choicesText[i], e->value);
1635	CGICDEBUGEND
1636	#endif /* CGICDEBUG */
1637	if (cgiStrEq(choicesText[i], e->value)) {
1638	#ifdef CGICDEBUG
1639	CGICDEBUGSTART
1640	fprintf(dout, "MATCH\n");
1641	CGICDEBUGEND
1642	#endif /* CGICDEBUG */
1643	*result = i;
1644	return cgiFormSuccess;
1645	}
1646	}
1647	*result = defaultV;
1648	return cgiFormNoSuchChoice;
1649	}
1650
1651	cgiFormResultType cgiFormSelectMultiple(
1652	char name, char *choicesText, int choicesTotal,
1653	int result, int invalid)
1654	{
1655	cgiFormEntry *e;
1656	int i;
1657	int hits = 0;
1658	int invalidE = 0;
1659	for (i=0; (i < choicesTotal); i++) {
1660	result[i] = 0;
1661	}
1662	e = cgiFormEntryFindFirst(name);
1663	if (!e) {
1664	*invalid = invalidE;
1665	return cgiFormNotFound;
1666	}
1667	do {
1668	int hit = 0;
1669	for (i=0; (i < choicesTotal); i++) {
1670	if (cgiStrEq(choicesText[i], e->value)) {
1671	result[i] = 1;
1672	hits++;
1673	hit = 1;
1674	break;
1675	}
1676	}
1677	if (!(hit)) {
1678	invalidE++;
1679	}
1680	} while ((e = cgiFormEntryFindNext()) != 0);
1681
1682	*invalid = invalidE;
1683
1684	if (hits) {
1685	return cgiFormSuccess;
1686	} else {
1687	return cgiFormNotFound;
1688	}
1689	}
1690
1691	cgiFormResultType cgiFormCheckboxSingle(
1692	char *name)
1693	{
1694	cgiFormEntry *e;
1695	e = cgiFormEntryFindFirst(name);
1696	if (!e) {
1697	return cgiFormNotFound;
1698	}
1699	return cgiFormSuccess;
1700	}
1701
1702	extern cgiFormResultType cgiFormCheckboxMultiple(
1703	char name, char *valuesText, int valuesTotal,
1704	int result, int invalid)
1705	{
1706	/* Implementation is identical to cgiFormSelectMultiple. */
1707	return cgiFormSelectMultiple(name, valuesText,
1708	valuesTotal, result, invalid);
1709	}
1710
1711	cgiFormResultType cgiFormRadio(
1712	char *name,
1713	char *valuesText, int valuesTotal, int result, int defaultV)
1714	{
1715	/* Implementation is identical to cgiFormSelectSingle. */
1716	return cgiFormSelectSingle(name, valuesText, valuesTotal,
1717	result, defaultV);
1718	}
1719
1720	cgiFormResultType cgiCookieString(
1721	char *name,
1722	char *value,
1723	int space)
1724	{
1725	char *p = cgiCookie;
1726	while (*p) {
1727	char *n = name;
1728	/* 2.02: if cgiCookie is exactly equal to name, this
1729	can cause an overrun. The server probably wouldn't
1730	allow it, since a name without values makes no sense
1731	-- but then again it might not check, so this is a
1732	genuine security concern. Thanks to Nicolas
1733	Tomadakis. */
1734	while (p == n) {
1735	if ((p == '\0') && (n == '\0')) {
1736	/* Malformed cookie header from client */
1737	return cgiFormNotFound;
1738	}
1739	p++;
1740	n++;
1741	}
1742	if ((!n) && (p == '=')) {
1743	p++;
1744	while ((p != ';') && (p != '\0') &&
1745	(space > 1))
1746	{
1747	value = p;
1748	value++;
1749	p++;
1750	space--;
1751	}
1752	if (space > 0) {
1753	*value = '\0';
1754	}
1755	/* Correct parens: 2.02. Thanks to
1756	Mathieu Villeneuve-Belair. */
1757	if (!(((p) == ';') \|\| ((p) == '\0')))
1758	{
1759	return cgiFormTruncated;
1760	} else {
1761	return cgiFormSuccess;
1762	}
1763	} else {
1764	/* Skip to next cookie */
1765	while (*p) {
1766	if (*p == ';') {
1767	break;
1768	}
1769	p++;
1770	}
1771	if (!*p) {
1772	/* 2.01: default to empty */
1773	if (space) {
1774	*value = '\0';
1775	}
1776	return cgiFormNotFound;
1777	}
1778	p++;
1779	/* Allow whitespace after semicolon */
1780	while ((p) && isspace(p)) {
1781	p++;
1782	}
1783	}
1784	}
1785	/* 2.01: actually the above loop never terminates except
1786	with a return, but do this to placate gcc */
1787	if (space) {
1788	*value = '\0';
1789	}
1790	return cgiFormNotFound;
1791	}
1792
1793	cgiFormResultType cgiCookieInteger(
1794	char *name,
1795	int *result,
1796	int defaultV)
1797	{
1798	char buffer[256];
1799	cgiFormResultType r =
1800	cgiCookieString(name, buffer, sizeof(buffer));
1801	if (r != cgiFormSuccess) {
1802	*result = defaultV;
1803	} else {
1804	*result = atoi(buffer);
1805	}
1806	return r;
1807	}
1808
1809	void cgiHeaderCookieSetInteger(char *name, int value, int secondsToLive,
1810	char path, char domain)
1811	{
1812	char svalue[256];
1813	sprintf(svalue, "%d", value);
1814	cgiHeaderCookieSetString(name, svalue, secondsToLive, path, domain);
1815	}
1816
1817	char *days[] = {
1818	"Sun",
1819	"Mon",
1820	"Tue",
1821	"Wed",
1822	"Thu",
1823	"Fri",
1824	"Sat"
1825	};
1826
1827	char *months[] = {
1828	"Jan",
1829	"Feb",
1830	"Mar",
1831	"Apr",
1832	"May",
1833	"Jun",
1834	"Jul",
1835	"Aug",
1836	"Sep",
1837	"Oct",
1838	"Nov",
1839	"Dec"
1840	};
1841
1842	void cgiHeaderCookieSetString(char name, char value, int secondsToLive,
1843	char path, char domain)
1844	{
1845	/* cgic 2.02: simpler and more widely compatible implementation.
1846	Thanks to Chunfu Lai.
1847	cgic 2.03: yes, but it didn't work. Reimplemented by
1848	Thomas Boutell. ; after last element was a bug.
1849	Examples of real world cookies that really work:
1850	Set-Cookie: MSNADS=UM=; domain=.slate.com;
1851	expires=Tue, 26-Apr-2022 19:00:00 GMT; path=/
1852	Set-Cookie: MC1=V=3&ID=b5bc08af2b8a43ff85fcb5efd8b238f0;
1853	domain=.slate.com; expires=Mon, 04-Oct-2021 19:00:00 GMT; path=/
1854	*/
1855	time_t now;
1856	time_t then;
1857	struct tm *gt;
1858	time(&now);
1859	then = now + secondsToLive;
1860	gt = gmtime(&then);
1861	fprintf(cgiOut,
1862	"Set-Cookie: %s=%s; domain=%s; expires=%s, %02d-%s-%04d %02d:%02d:%02d GMT; path=%s\r\n",
1863	name, value, domain,
1864	days[gt->tm_wday],
1865	gt->tm_mday,
1866	months[gt->tm_mon],
1867	gt->tm_year + 1900,
1868	gt->tm_hour,
1869	gt->tm_min,
1870	gt->tm_sec,
1871	path);
1872	}
1873
1874	void cgiHeaderLocation(char *redirectUrl) {
1875	fprintf(cgiOut, "Location: %s\r\n\r\n", redirectUrl);
1876	}
1877
1878	void cgiHeaderStatus(int status, char *statusMessage) {
1879	fprintf(cgiOut, "Status: %d %s\r\n\r\n", status, statusMessage);
1880	}
1881
1882	void cgiHeaderContentType(char *mimeType) {
1883	fprintf(cgiOut, "Content-type: %s\r\n\r\n", mimeType);
1884	}
1885
1886	static int cgiWriteString(FILE out, char s);
1887
1888	static int cgiWriteInt(FILE *out, int i);
1889
1890	#define CGIC_VERSION "2.0"
1891
1892	cgiEnvironmentResultType cgiWriteEnvironment(char *filename) {
1893	FILE *out;
1894	cgiFormEntry *e;
1895	/* Be sure to open in binary mode */
1896	out = fopen(filename, "wb");
1897	if (!out) {
1898	/* Can't create file */
1899	return cgiEnvironmentIO;
1900	}
1901	if (!cgiWriteString(out, "CGIC2.0")) {
1902	goto error;
1903	}
1904	if (!cgiWriteString(out, cgiServerSoftware)) {
1905	goto error;
1906	}
1907	if (!cgiWriteString(out, cgiServerName)) {
1908	goto error;
1909	}
1910	if (!cgiWriteString(out, cgiGatewayInterface)) {
1911	goto error;
1912	}
1913	if (!cgiWriteString(out, cgiServerProtocol)) {
1914	goto error;
1915	}
1916	if (!cgiWriteString(out, cgiServerPort)) {
1917	goto error;
1918	}
1919	if (!cgiWriteString(out, cgiRequestMethod)) {
1920	goto error;
1921	}
1922	if (!cgiWriteString(out, cgiPathInfo)) {
1923	goto error;
1924	}
1925	if (!cgiWriteString(out, cgiPathTranslated)) {
1926	goto error;
1927	}
1928	if (!cgiWriteString(out, cgiScriptName)) {
1929	goto error;
1930	}
1931	if (!cgiWriteString(out, cgiQueryString)) {
1932	goto error;
1933	}
1934	if (!cgiWriteString(out, cgiRemoteHost)) {
1935	goto error;
1936	}
1937	if (!cgiWriteString(out, cgiRemoteAddr)) {
1938	goto error;
1939	}
1940	if (!cgiWriteString(out, cgiAuthType)) {
1941	goto error;
1942	}
1943	if (!cgiWriteString(out, cgiRemoteUser)) {
1944	goto error;
1945	}
1946	if (!cgiWriteString(out, cgiRemoteIdent)) {
1947	goto error;
1948	}
1949	if (!cgiWriteString(out, cgiContentType)) {
1950	goto error;
1951	}
1952	if (!cgiWriteString(out, cgiAccept)) {
1953	goto error;
1954	}
1955	if (!cgiWriteString(out, cgiUserAgent)) {
1956	goto error;
1957	}
1958	if (!cgiWriteString(out, cgiReferrer)) {
1959	goto error;
1960	}
1961	if (!cgiWriteString(out, cgiCookie)) {
1962	goto error;
1963	}
1964	if (!cgiWriteInt(out, cgiContentLength)) {
1965	goto error;
1966	}
1967	e = cgiFormEntryFirst;
1968	while (e) {
1969	cgiFilePtr fp;
1970	if (!cgiWriteString(out, e->attr)) {
1971	goto error;
1972	}
1973	if (!cgiWriteString(out, e->value)) {
1974	goto error;
1975	}
1976	/* New 2.0 fields and file uploads */
1977	if (!cgiWriteString(out, e->fileName)) {
1978	goto error;
1979	}
1980	if (!cgiWriteString(out, e->contentType)) {
1981	goto error;
1982	}
1983	if (!cgiWriteInt(out, e->valueLength)) {
1984	goto error;
1985	}
1986	if (cgiFormFileOpen(e->attr, &fp) == cgiFormSuccess) {
1987	char buffer[1024];
1988	int got;
1989	if (!cgiWriteInt(out, 1)) {
1990	cgiFormFileClose(fp);
1991	goto error;
1992	}
1993	while (cgiFormFileRead(fp, buffer,
1994	sizeof(buffer), &got) == cgiFormSuccess)
1995	{
1996	if (((int) fwrite(buffer, 1, got, out)) != got) {
1997	cgiFormFileClose(fp);
1998	goto error;
1999	}
2000	}
2001	if (cgiFormFileClose(fp) != cgiFormSuccess) {
2002	goto error;
2003	}
2004	} else {
2005	if (!cgiWriteInt(out, 0)) {
2006	goto error;
2007	}
2008	}
2009	e = e->next;
2010	}
2011	fclose(out);
2012	return cgiEnvironmentSuccess;
2013	error:
2014	fclose(out);
2015	/* If this function is not defined in your system,
2016	you must substitute the appropriate
2017	file-deletion function. */
2018	unlink(filename);
2019	return cgiEnvironmentIO;
2020	}
2021
2022	static int cgiWriteString(FILE out, char s) {
2023	int len = (int) strlen(s);
2024	cgiWriteInt(out, len);
2025	if (((int) fwrite(s, 1, len, out)) != len) {
2026	return 0;
2027	}
2028	return 1;
2029	}
2030
2031	static int cgiWriteInt(FILE *out, int i) {
2032	if (!fwrite(&i, sizeof(int), 1, out)) {
2033	return 0;
2034	}
2035	return 1;
2036	}
2037
2038	static int cgiReadString(FILE out, char *s);
2039
2040	static int cgiReadInt(FILE out, int i);
2041
2042	cgiEnvironmentResultType cgiReadEnvironment(char *filename) {
2043	FILE *in;
2044	cgiFormEntry e = 0, p;
2045	char *version;
2046	/* Prevent compiler warnings */
2047	cgiEnvironmentResultType result = cgiEnvironmentIO;
2048	/* Free any existing data first */
2049	cgiFreeResources();
2050	/* Be sure to open in binary mode */
2051	in = fopen(filename, "rb");
2052	if (!in) {
2053	/* Can't access file */
2054	return cgiEnvironmentIO;
2055	}
2056	if (!cgiReadString(in, &version)) {
2057	goto error;
2058	}
2059	if (strcmp(version, "CGIC" CGIC_VERSION)) {
2060	/* 2.02: Merezko Oleg */
2061	free(version);
2062	return cgiEnvironmentWrongVersion;
2063	}
2064	/* 2.02: Merezko Oleg */
2065	free(version);
2066	if (!cgiReadString(in, &cgiServerSoftware)) {
2067	goto error;
2068	}
2069	if (!cgiReadString(in, &cgiServerName)) {
2070	goto error;
2071	}
2072	if (!cgiReadString(in, &cgiGatewayInterface)) {
2073	goto error;
2074	}
2075	if (!cgiReadString(in, &cgiServerProtocol)) {
2076	goto error;
2077	}
2078	if (!cgiReadString(in, &cgiServerPort)) {
2079	goto error;
2080	}
2081	if (!cgiReadString(in, &cgiRequestMethod)) {
2082	goto error;
2083	}
2084	if (!cgiReadString(in, &cgiPathInfo)) {
2085	goto error;
2086	}
2087	if (!cgiReadString(in, &cgiPathTranslated)) {
2088	goto error;
2089	}
2090	if (!cgiReadString(in, &cgiScriptName)) {
2091	goto error;
2092	}
2093	if (!cgiReadString(in, &cgiQueryString)) {
2094	goto error;
2095	}
2096	if (!cgiReadString(in, &cgiRemoteHost)) {
2097	goto error;
2098	}
2099	if (!cgiReadString(in, &cgiRemoteAddr)) {
2100	goto error;
2101	}
2102	if (!cgiReadString(in, &cgiAuthType)) {
2103	goto error;
2104	}
2105	if (!cgiReadString(in, &cgiRemoteUser)) {
2106	goto error;
2107	}
2108	if (!cgiReadString(in, &cgiRemoteIdent)) {
2109	goto error;
2110	}
2111	if (!cgiReadString(in, &cgiContentType)) {
2112	goto error;
2113	}
2114	if (!cgiReadString(in, &cgiAccept)) {
2115	goto error;
2116	}
2117	if (!cgiReadString(in, &cgiUserAgent)) {
2118	goto error;
2119	}
2120	if (!cgiReadString(in, &cgiReferrer)) {
2121	goto error;
2122	}
2123	/* 2.0 */
2124	if (!cgiReadString(in, &cgiCookie)) {
2125	goto error;
2126	}
2127	if (!cgiReadInt(in, &cgiContentLength)) {
2128	goto error;
2129	}
2130	p = 0;
2131	while (1) {
2132	int fileFlag;
2133	e = (cgiFormEntry *) calloc(1, sizeof(cgiFormEntry));
2134	if (!e) {
2135	cgiFreeResources();
2136	fclose(in);
2137	return cgiEnvironmentMemory;
2138	}
2139	memset(e, 0, sizeof(cgiFormEntry));
2140	if (!cgiReadString(in, &e->attr)) {
2141	/* This means we've reached the end of the list. */
2142	/* 2.02: thanks to Merezko Oleg */
2143	free(e);
2144	break;
2145	}
2146	if (!cgiReadString(in, &e->value)) {
2147	goto outOfMemory;
2148	}
2149	if (!cgiReadString(in, &e->fileName)) {
2150	goto outOfMemory;
2151	}
2152	if (!cgiReadString(in, &e->contentType)) {
2153	goto outOfMemory;
2154	}
2155	if (!cgiReadInt(in, &e->valueLength)) {
2156	goto outOfMemory;
2157	}
2158	if (!cgiReadInt(in, &fileFlag)) {
2159	goto outOfMemory;
2160	}
2161	if (fileFlag) {
2162	char buffer[1024];
2163	FILE *out;
2164	char tfileName[1024];
2165	int got;
2166	int len = e->valueLength;
2167	if (getTempFileName(tfileName)
2168	!= cgiParseSuccess)
2169	{
2170	result = cgiEnvironmentIO;
2171	goto error;
2172	}
2173	out = fopen(tfileName, "w+b");
2174	if (!out) {
2175	result = cgiEnvironmentIO;
2176	goto error;
2177	}
2178	while (len > 0) {
2179	/* 2.01: try is a bad variable name in
2180	C++, and it wasn't being used
2181	properly either */
2182	int tryr = len;
2183	if (tryr > ((int) sizeof(buffer))) {
2184	tryr = sizeof(buffer);
2185	}
2186	got = fread(buffer, 1, tryr, in);
2187	if (got <= 0) {
2188	result = cgiEnvironmentIO;
2189	fclose(out);
2190	unlink(tfileName);
2191	goto error;
2192	}
2193	if (((int) fwrite(buffer, 1, got, out)) != got) {
2194	result = cgiEnvironmentIO;
2195	fclose(out);
2196	unlink(tfileName);
2197	goto error;
2198	}
2199	len -= got;
2200	}
2201	/* cgic 2.05: should be fclose not rewind */
2202	fclose(out);
2203	e->tfileName = (char *) malloc((int) strlen(tfileName) + 1);
2204	if (!e->tfileName) {
2205	result = cgiEnvironmentMemory;
2206	unlink(tfileName);
2207	goto error;
2208	}
2209	strcpy(e->tfileName, tfileName);
2210	} else {
2211	e->tfileName = (char *) malloc(1);
2212	if (!e->tfileName) {
2213	result = cgiEnvironmentMemory;
2214	goto error;
2215	}
2216	}
2217	e->next = 0;
2218	if (p) {
2219	p->next = e;
2220	} else {
2221	cgiFormEntryFirst = e;
2222	}
2223	p = e;
2224	}
2225	fclose(in);
2226	cgiRestored = 1;
2227	return cgiEnvironmentSuccess;
2228	outOfMemory:
2229	result = cgiEnvironmentMemory;
2230	error:
2231	cgiFreeResources();
2232	fclose(in);
2233	if (e) {
2234	if (e->attr) {
2235	free(e->attr);
2236	}
2237	if (e->value) {
2238	free(e->value);
2239	}
2240	if (e->fileName) {
2241	free(e->fileName);
2242	}
2243	if (e->contentType) {
2244	free(e->contentType);
2245	}
2246	if (e->tfileName) {
2247	free(e->tfileName);
2248	}
2249	free(e);
2250	}
2251	return result;
2252	}
2253
2254	static int cgiReadString(FILE in, char *s) {
2255	int len;
2256	/* 2.0 fix: test cgiReadInt for failure! */
2257	if (!cgiReadInt(in, &len)) {
2258	return 0;
2259	}
2260	s = (char ) malloc(len + 1);
2261	if (!(*s)) {
2262	return 0;
2263	}
2264	if (((int) fread(*s, 1, len, in)) != len) {
2265	return 0;
2266	}
2267	(*s)[len] = '\0';
2268	return 1;
2269	}
2270
2271	static int cgiReadInt(FILE out, int i) {
2272	if (!fread(i, sizeof(int), 1, out)) {
2273	return 0;
2274	}
2275	return 1;
2276	}
2277
2278	static int cgiStrEqNc(char s1, char s2) {
2279	while(1) {
2280	if (!(*s1)) {
2281	if (!(*s2)) {
2282	return 1;
2283	} else {
2284	return 0;
2285	}
2286	} else if (!(*s2)) {
2287	return 0;
2288	}
2289	if (isalpha(*s1)) {
2290	if (tolower(s1) != tolower(s2)) {
2291	return 0;
2292	}
2293	} else if ((s1) != (s2)) {
2294	return 0;
2295	}
2296	s1++;
2297	s2++;
2298	}
2299	}
2300
2301	static int cgiStrBeginsNc(char s1, char s2) {
2302	while(1) {
2303	if (!(*s2)) {
2304	return 1;
2305	} else if (!(*s1)) {
2306	return 0;
2307	}
2308	if (isalpha(*s1)) {
2309	if (tolower(s1) != tolower(s2)) {
2310	return 0;
2311	}
2312	} else if ((s1) != (s2)) {
2313	return 0;
2314	}
2315	s1++;
2316	s2++;
2317	}
2318	}
2319
2320	static char *cgiFindTarget = 0;
2321	static cgiFormEntry *cgiFindPos = 0;
2322
2323	static cgiFormEntry cgiFormEntryFindFirst(char name) {
2324	cgiFindTarget = name;
2325	cgiFindPos = cgiFormEntryFirst;
2326	return cgiFormEntryFindNext();
2327	}
2328
2329	static cgiFormEntry *cgiFormEntryFindNext() {
2330	while (cgiFindPos) {
2331	cgiFormEntry *c = cgiFindPos;
2332	cgiFindPos = c->next;
2333	if (!strcmp(c -> attr, cgiFindTarget)) {
2334	return c;
2335	}
2336	}
2337	return 0;
2338	}
2339
2340	static int cgiFirstNonspaceChar(char *s) {
2341	int len = strspn(s, " \n\r\t");
2342	return s[len];
2343	}
2344
2345	void cgiStringArrayFree(char **stringArray) {
2346	char *p;
2347	char **arrayItself = stringArray;
2348	p = *stringArray;
2349	while (p) {
2350	free(p);
2351	stringArray++;
2352	p = *stringArray;
2353	}
2354	/* 2.0: free the array itself! */
2355	free(arrayItself);
2356	}
2357
2358	cgiFormResultType cgiCookies(char ***result) {
2359	char **stringArray;
2360	int i;
2361	int total = 0;
2362	char *p;
2363	char *n;
2364	p = cgiCookie;
2365	while (*p) {
2366	if (*p == '=') {
2367	total++;
2368	}
2369	p++;
2370	}
2371	stringArray = (char *) malloc(sizeof(char ) * (total + 1));
2372	if (!stringArray) {
2373	*result = 0;
2374	return cgiFormMemory;
2375	}
2376	/* initialize all entries to null; the last will stay that way */
2377	for (i=0; (i <= total); i++) {
2378	stringArray[i] = 0;
2379	}
2380	i = 0;
2381	p = cgiCookie;
2382	while (*p) {
2383	while (p && isspace(p)) {
2384	p++;
2385	}
2386	n = p;
2387	while (p && (p != '=')) {
2388	p++;
2389	}
2390	if (p != n) {
2391	stringArray[i] = (char *) malloc((p - n) + 1);
2392	if (!stringArray[i]) {
2393	cgiStringArrayFree(stringArray);
2394	*result = 0;
2395	return cgiFormMemory;
2396	}
2397	memcpy(stringArray[i], n, p - n);
2398	stringArray[i][p - n] = '\0';
2399	i++;
2400	}
2401	while (p && (p != ';')) {
2402	p++;
2403	}
2404	if (!*p) {
2405	break;
2406	}
2407	if (*p == ';') {
2408	p++;
2409	}
2410	}
2411	*result = stringArray;
2412	return cgiFormSuccess;
2413	}
2414
2415	cgiFormResultType cgiFormEntries(char ***result) {
2416	char **stringArray;
2417	cgiFormEntry e, pe;
2418	int i;
2419	int total = 0;
2420	e = cgiFormEntryFirst;
2421	while (e) {
2422	/* Don't count a field name more than once if
2423	multiple values happen to be present for it */
2424	pe = cgiFormEntryFirst;
2425	while (pe != e) {
2426	if (!strcmp(e->attr, pe->attr)) {
2427	goto skipSecondValue;
2428	}
2429	pe = pe->next;
2430	}
2431	total++;
2432	skipSecondValue:
2433	e = e->next;
2434	}
2435	stringArray = (char *) malloc(sizeof(char ) * (total + 1));
2436	if (!stringArray) {
2437	*result = 0;
2438	return cgiFormMemory;
2439	}
2440	/* initialize all entries to null; the last will stay that way */
2441	for (i=0; (i <= total); i++) {
2442	stringArray[i] = 0;
2443	}
2444	/* Now go get the entries */
2445	e = cgiFormEntryFirst;
2446	i = 0;
2447	while (e) {
2448	int space;
2449	/* Don't return a field name more than once if
2450	multiple values happen to be present for it */
2451	pe = cgiFormEntryFirst;
2452	while (pe != e) {
2453	if (!strcmp(e->attr, pe->attr)) {
2454	goto skipSecondValue2;
2455	}
2456	pe = pe->next;
2457	}
2458	space = (int) strlen(e->attr) + 1;
2459	stringArray[i] = (char *) malloc(space);
2460	if (stringArray[i] == 0) {
2461	/* Memory problems */
2462	cgiStringArrayFree(stringArray);
2463	*result = 0;
2464	return cgiFormMemory;
2465	}
2466	strcpy(stringArray[i], e->attr);
2467	i++;
2468	skipSecondValue2:
2469	e = e->next;
2470	}
2471	*result = stringArray;
2472	return cgiFormSuccess;
2473	}
2474
2475	#define TRYPUTC(ch) \
2476	{ \
2477	if (putc((ch), cgiOut) == EOF) { \
2478	return cgiFormIO; \
2479	} \
2480	}
2481
2482	cgiFormResultType cgiHtmlEscapeData(char *data, int len)
2483	{
2484	while (len--) {
2485	if (*data == '<') {
2486	TRYPUTC('&');
2487	TRYPUTC('l');
2488	TRYPUTC('t');
2489	TRYPUTC(';');
2490	} else if (*data == '&') {
2491	TRYPUTC('&');
2492	TRYPUTC('a');
2493	TRYPUTC('m');
2494	TRYPUTC('p');
2495	TRYPUTC(';');
2496	} else if (*data == '>') {
2497	TRYPUTC('&');
2498	TRYPUTC('g');
2499	TRYPUTC('t');
2500	TRYPUTC(';');
2501	} else {
2502	TRYPUTC(*data);
2503	}
2504	data++;
2505	}
2506	return cgiFormSuccess;
2507	}
2508
2509	cgiFormResultType cgiHtmlEscape(char *s)
2510	{
2511	return cgiHtmlEscapeData(s, (int) strlen(s));
2512	}
2513
2514	/* Output data with the " character HTML-escaped, and no
2515	other characters escaped. This is useful when outputting
2516	the contents of a tag attribute such as 'href' or 'src'.
2517	'data' is not null-terminated; 'len' is the number of
2518	bytes in 'data'. Returns cgiFormIO in the event
2519	of error, cgiFormSuccess otherwise. */
2520	cgiFormResultType cgiValueEscapeData(char *data, int len)
2521	{
2522	while (len--) {
2523	if (*data == '\"') {
2524	TRYPUTC('&');
2525	TRYPUTC('#');
2526	TRYPUTC('3');
2527	TRYPUTC('4');
2528	TRYPUTC(';');
2529	} else {
2530	TRYPUTC(*data);
2531	}
2532	data++;
2533	}
2534	return cgiFormSuccess;
2535	}
2536
2537	cgiFormResultType cgiValueEscape(char *s)
2538	{
2539	return cgiValueEscapeData(s, (int) strlen(s));
2540	}
2541
2542

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source: trunk/thirds/cgic206/cgic.c @ 88

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