cgic.c @ 383

Last change on this file since 383 was 379, checked in by djay, 12 years ago
Fix handling of multiple outputs. Small fix to build with bleeding edge gcc. Add missing copyright in service_internal_ms.c/h. Better gesture of session data. Update HISTORY.txt content.
Property svn:eol-style set to `native` Property svn:mime-type set to `text/x-csrc`
File size: 54.6 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	#ifdef WIN32
27	#define _INC_STDIO
28	#endif
29
30	#include <stdio.h>
31	#include <string.h>
32	#include <ctype.h>
33	#include <stdlib.h>
34	#include <time.h>
35	#include <sys/types.h>
36	#include <sys/stat.h>
37
38	#ifdef WIN32
39	#include <io.h>
40
41	/* cgic 2.01 */
42	#include <fcntl.h>
43
44	#else
45	#include <unistd.h>
46	#endif /* WIN32 */
47	#include "cgic.h"
48
49	#define cgiStrEq(a, b) (!strcmp((a), (b)))
50
51	char *cgiServerSoftware;
52	char *cgiServerName;
53	char *cgiGatewayInterface;
54	char *cgiServerProtocol;
55	char *cgiServerPort;
56	char *cgiRequestMethod;
57	char *cgiPathInfo;
58	char *cgiPathTranslated;
59	char *cgiScriptName;
60	char *cgiQueryString;
61	char *cgiRemoteHost;
62	char *cgiRemoteAddr;
63	char *cgiAuthType;
64	char *cgiRemoteUser;
65	char *cgiRemoteIdent;
66	char cgiContentTypeData[1024];
67	char *cgiContentType = cgiContentTypeData;
68	char *cgiMultipartBoundary;
69	char *cgiCookie;
70	int cgiContentLength;
71	char *cgiAccept;
72	char *cgiUserAgent;
73	char *cgiReferrer;
74	char *cgiSid;
75
76	FILE *cgiIn;
77	FILE *cgiOut;
78
79	/* True if CGI environment was restored from a file. */
80	static int cgiRestored = 0;
81	static int cgiTreatUrlEncoding;
82
83	static void cgiGetenv(char *s, char var);
84
85	typedef enum {
86	cgiParseSuccess,
87	cgiParseMemory,
88	cgiParseIO
89	} cgiParseResultType;
90
91	/* One form entry, consisting of an attribute-value pair,
92	and an optional filename and content type. All of
93	these are guaranteed to be valid null-terminated strings,
94	which will be of length zero in the event that the
95	field is not present, with the exception of tfileName
96	which will be null when 'in' is null. DO NOT MODIFY THESE
97	VALUES. Make local copies if modifications are desired. */
98
99	typedef struct cgiFormEntryStruct {
100	char *attr;
101	/* value is populated for regular form fields only.
102	For file uploads, it points to an empty string, and file
103	upload data should be read from the file tfileName. */
104	char *value;
105	/* When fileName is not an empty string, tfileName is not null,
106	and 'value' points to an empty string. */
107	/* Valid for both files and regular fields; does not include
108	terminating null of regular fields. */
109	int valueLength;
110	char *fileName;
111	char *contentType;
112	/* Temporary file name for working storage of file uploads. */
113	char *tfileName;
114	struct cgiFormEntryStruct *next;
115	} cgiFormEntry;
116
117	/* The first form entry. */
118	static cgiFormEntry *cgiFormEntryFirst;
119
120	static cgiParseResultType cgiParseGetFormInput();
121	static cgiParseResultType cgiParsePostFormInput();
122	static cgiParseResultType cgiParsePostMultipartInput();
123	static cgiParseResultType cgiParseFormInput(char *data, int length);
124	static void cgiSetupConstants();
125	static void cgiFreeResources();
126	static int cgiStrEqNc(char s1, char s2);
127	static int cgiStrBeginsNc(char s1, char s2);
128
129	//int cgiMain_init() {}
130
131
132	int main(int argc, char *argv[]) {
133	int result;
134	char *cgiContentLengthString;
135	char *e;
136	while (FCGI_Accept() >= 0) {
137	cgiSetupConstants();
138	cgiGetenv(&cgiServerSoftware, "SERVER_SOFTWARE");
139	cgiGetenv(&cgiServerName, "SERVER_NAME");
140	cgiGetenv(&cgiGatewayInterface, "GATEWAY_INTERFACE");
141	cgiGetenv(&cgiServerProtocol, "SERVER_PROTOCOL");
142	cgiGetenv(&cgiServerPort, "SERVER_PORT");
143	cgiGetenv(&cgiRequestMethod, "REQUEST_METHOD");
144	if(strcmp(cgiRequestMethod,"")==0 && argc>=1)
145	cgiRequestMethod="GET";
146	cgiGetenv(&cgiPathInfo, "PATH_INFO");
147	cgiGetenv(&cgiPathTranslated, "PATH_TRANSLATED");
148	cgiGetenv(&cgiScriptName, "SCRIPT_NAME");
149	cgiGetenv(&cgiQueryString, "QUERY_STRING");
150	cgiSid=NULL;
151	if(cgiQueryString!=NULL && argc>=2){
152	cgiQueryString=argv[1];
153	if(argc>2){
154	cgiSid=argv[2];
155	}
156	}
157	cgiGetenv(&cgiRemoteHost, "REMOTE_HOST");
158	cgiGetenv(&cgiRemoteAddr, "REMOTE_ADDR");
159	cgiGetenv(&cgiAuthType, "AUTH_TYPE");
160	cgiGetenv(&cgiRemoteUser, "REMOTE_USER");
161	cgiGetenv(&cgiRemoteIdent, "REMOTE_IDENT");
162	/* 2.0: the content type string needs to be parsed and modified, so
163	copy it to a buffer. */
164	e = getenv("CONTENT_TYPE");
165	if (e) {
166	if (strlen(e) < sizeof(cgiContentTypeData)) {
167	strcpy(cgiContentType, e);
168	} else {
169	/* Truncate safely in the event of what is almost certainly
170	a hack attempt */
171	strncpy(cgiContentType, e, sizeof(cgiContentTypeData));
172	cgiContentType[sizeof(cgiContentTypeData) - 1] = '\0';
173	}
174	} else {
175	cgiContentType[0] = '\0';
176	}
177	/* Never null */
178	cgiMultipartBoundary = "";
179	/* 2.0: parse semicolon-separated additional parameters of the
180	content type. The one we're interested in is 'boundary'.
181	We discard the rest to make cgiContentType more useful
182	to the typical programmer. */
183	if (strchr(cgiContentType, ';')) {
184	char *sat = strchr(cgiContentType, ';');
185	while (sat) {
186	*sat = '\0';
187	sat++;
188	while (isspace(*sat)) {
189	sat++;
190	}
191	if (cgiStrBeginsNc(sat, "boundary=")) {
192	char *s;
193	cgiMultipartBoundary = sat + strlen("boundary=");
194	s = cgiMultipartBoundary;
195	while ((s) && (!isspace(s))) {
196	s++;
197	}
198	*s = '\0';
199	break;
200	} else {
201	sat = strchr(sat, ';');
202	}
203	}
204	}
205	cgiGetenv(&cgiContentLengthString, "CONTENT_LENGTH");
206	cgiContentLength = atoi(cgiContentLengthString);
207	if(cgiContentLength==0 && argc>=2){
208	cgiContentLength=strlen(argv[1]);
209	}
210	cgiGetenv(&cgiAccept, "HTTP_ACCEPT");
211	cgiGetenv(&cgiUserAgent, "HTTP_USER_AGENT");
212	cgiGetenv(&cgiReferrer, "HTTP_REFERER");
213	cgiGetenv(&cgiCookie, "HTTP_COOKIE");
214	#ifdef CGICDEBUG
215	CGICDEBUGSTART
216	fprintf(dout, "%d\n", cgiContentLength);
217	fprintf(dout, "%s\n", cgiRequestMethod);
218	fprintf(dout, "%s\n", cgiContentType);
219	CGICDEBUGEND
220	#endif /* CGICDEBUG */
221	#ifdef WIN32
222	/* 1.07: Must set stdin and stdout to binary mode */
223	/* 2.0: this is particularly crucial now and must not be removed */
224	_setmode( FCGI_fileno( stdin ), _O_BINARY );
225	_setmode( FCGI_fileno( stdout ), _O_BINARY );
226	#endif /* WIN32 */
227	cgiFormEntryFirst = 0;
228	cgiIn = FCGI_stdin;
229	cgiOut = FCGI_stdout;
230	cgiRestored = 0;
231
232
233	/* These five lines keep compilers from
234	producing warnings that argc and argv
235	are unused. They have no actual function. */
236	if (argc) {
237	if (argv[0]) {
238	cgiRestored = 0;
239	}
240	}
241
242
243	cgiTreatUrlEncoding=0;
244	if (cgiStrEqNc(cgiRequestMethod, "post")) {
245	cgiTreatUrlEncoding=0;
246	#ifdef CGICDEBUG
247	CGICDEBUGSTART
248	fprintf(dout, "POST recognized\n");
249	CGICDEBUGEND
250	#endif /* CGICDEBUG */
251	if (cgiStrEqNc(cgiContentType, "application/x-www-form-urlencoded")) {
252	#ifdef CGICDEBUG
253	CGICDEBUGSTART
254	fprintf(dout, "Calling PostFormInput\n");
255	CGICDEBUGEND
256	#endif /* CGICDEBUG */
257	if (cgiParsePostFormInput() != cgiParseSuccess) {
258	#ifdef CGICDEBUG
259	CGICDEBUGSTART
260	fprintf(dout, "PostFormInput failed\n");
261	CGICDEBUGEND
262	#endif /* CGICDEBUG */
263	cgiFreeResources();
264	return -1;
265	}
266	#ifdef CGICDEBUG
267	CGICDEBUGSTART
268	fprintf(dout, "PostFormInput succeeded\n");
269	CGICDEBUGEND
270	#endif /* CGICDEBUG */
271	} else if (cgiStrEqNc(cgiContentType, "multipart/form-data")) {
272	#ifdef CGICDEBUG
273	CGICDEBUGSTART
274	fprintf(dout, "Calling PostMultipartInput\n");
275	CGICDEBUGEND
276	#endif /* CGICDEBUG */
277	if (cgiParsePostMultipartInput() != cgiParseSuccess) {
278	#ifdef CGICDEBUG
279	CGICDEBUGSTART
280	fprintf(dout, "PostMultipartInput failed\n");
281	CGICDEBUGEND
282	#endif /* CGICDEBUG */
283	cgiFreeResources();
284	return -1;
285	}
286	#ifdef CGICDEBUG
287	CGICDEBUGSTART
288	fprintf(dout, "PostMultipartInput succeeded\n");
289	CGICDEBUGEND
290	#endif /* CGICDEBUG */
291	}
292	} else if (cgiStrEqNc(cgiRequestMethod, "get")) {
293	/* The spec says this should be taken care of by
294	the server, but... it isn't */
295	cgiContentLength = strlen(cgiQueryString);
296	if (cgiParseGetFormInput() != cgiParseSuccess) {
297	#ifdef CGICDEBUG
298	CGICDEBUGSTART
299	fprintf(dout, "GetFormInput failed\n");
300	CGICDEBUGEND
301	#endif /* CGICDEBUG */
302	cgiFreeResources();
303	return -1;
304	} else {
305	#ifdef CGICDEBUG
306	CGICDEBUGSTART
307	fprintf(dout, "GetFormInput succeeded\n");
308	CGICDEBUGEND
309	#endif /* CGICDEBUG */
310	}
311	}
312	result = cgiMain();
313	cgiFreeResources();
314	}
315	FCGI_Finish();
316	return result;
317	}
318
319	static void cgiGetenv(char *s, char var){
320	*s = getenv(var);
321	if (!(*s)) {
322	*s = "";
323	}
324	}
325
326	static cgiParseResultType cgiParsePostFormInput() {
327	char *input;
328	cgiParseResultType result;
329	if (!cgiContentLength) {
330	return cgiParseSuccess;
331	}
332	input = (char *) malloc(cgiContentLength);
333	if (!input) {
334	return cgiParseMemory;
335	}
336	if (((int) fread(input, 1, cgiContentLength, cgiIn))
337	!= cgiContentLength)
338	{
339	return cgiParseIO;
340	}
341	result = cgiParseFormInput(input, cgiContentLength);
342	free(input);
343	return result;
344	}
345
346	/* 2.0: A virtual datastream supporting putback of
347	enough characters to handle multipart boundaries easily.
348	A simple memset(&mp, 0, sizeof(mp)) is suitable initialization. */
349
350	typedef struct {
351	/* Buffer for putting characters back */
352	char putback[1024];
353	/* Position in putback from which next character will be read.
354	If readPos == writePos, then next character should
355	come from cgiIn. */
356	int readPos;
357	/* Position in putback to which next character will be put back.
358	If writePos catches up to readPos, as opposed to the other
359	way around, the stream no longer functions properly.
360	Calling code must guarantee that no more than
361	sizeof(putback) bytes are put back at any given time. */
362	int writePos;
363	/* Offset in the virtual datastream; can be compared
364	to cgiContentLength */
365	int offset;
366	} mpStream, *mpStreamPtr;
367
368	int mpRead(mpStreamPtr mpp, char *buffer, int len)
369	{
370	int ilen = len;
371	int got = 0;
372	while (len) {
373	if (mpp->readPos != mpp->writePos) {
374	*buffer++ = mpp->putback[mpp->readPos++];
375	mpp->readPos %= sizeof(mpp->putback);
376	got++;
377	len--;
378	} else {
379	break;
380	}
381	}
382	/* Refuse to read past the declared length in order to
383	avoid deadlock */
384	if (len > (cgiContentLength - mpp->offset)) {
385	len = cgiContentLength - mpp->offset;
386	}
387	if (len) {
388	int fgot = fread(buffer, 1, len, cgiIn);
389	if (fgot >= 0) {
390	mpp->offset += (got + fgot);
391	return got + fgot;
392	} else if (got > 0) {
393	mpp->offset += got;
394	return got;
395	} else {
396	/* EOF or error */
397	return fgot;
398	}
399	} else if (got) {
400	return got;
401	} else if (ilen) {
402	return EOF;
403	} else {
404	/* 2.01 */
405	return 0;
406	}
407	}
408
409	void mpPutBack(mpStreamPtr mpp, char *data, int len)
410	{
411	mpp->offset -= len;
412	while (len) {
413	mpp->putback[mpp->writePos++] = *data++;
414	mpp->writePos %= sizeof(mpp->putback);
415	len--;
416	}
417	}
418
419	/* This function copies the body to outf if it is not null, otherwise to
420	a newly allocated character buffer at *outP, which will be null
421	terminated; if both outf and outP are null the body is not stored.
422	If bodyLengthP is not null, the size of the body in bytes is stored
423	to bodyLengthP, not including any terminating null added to outP.
424	If 'first' is nonzero, a preceding newline is not expected before
425	the boundary. If 'first' is zero, a preceding newline is expected.
426	Upon return mpp is positioned after the boundary and its trailing
427	newline, if any; if the boundary is followed by -- the next two
428	characters read after this function returns will be --. Upon error,
429	if outP is not null, outP is a null pointer; bodyLengthP
430	is set to zero. Returns cgiParseSuccess, cgiParseMemory
431	or cgiParseIO. */
432
433	static cgiParseResultType afterNextBoundary(mpStreamPtr mpp,
434	FILE *outf,
435	char **outP,
436	int *bodyLengthP,
437	int first
438	);
439
440	static int readHeaderLine(
441	mpStreamPtr mpp,
442	char *attr,
443	int attrSpace,
444	char *value,
445	int valueSpace);
446
447	static void decomposeValue(char *value,
448	char *mvalue, int mvalueSpace,
449	char **argNames,
450	char **argValues,
451	int argValueSpace);
452
453	/* tfileName must be 1024 bytes to ensure adequacy on
454	win32 (1024 exceeds the maximum path length and
455	certainly exceeds observed behavior of _tmpnam).
456	May as well also be 1024 bytes on Unix, although actual
457	length is strlen(cgiTempDir) + a short unique pattern. */
458
459	static cgiParseResultType getTempFileName(char *tfileName);
460
461	static cgiParseResultType cgiParsePostMultipartInput() {
462	cgiParseResultType result;
463	cgiFormEntry n = 0, l = 0;
464	int got;
465	FILE *outf = 0;
466	char *out = 0;
467	char tfileName[1024];
468	mpStream mp;
469	mpStreamPtr mpp = &mp;
470	memset(&mp, 0, sizeof(mp));
471	if (!cgiContentLength) {
472	return cgiParseSuccess;
473	}
474	/* Read first boundary, including trailing newline */
475	result = afterNextBoundary(mpp, 0, 0, 0, 1);
476	if (result == cgiParseIO) {
477	/* An empty submission is not necessarily an error */
478	return cgiParseSuccess;
479	} else if (result != cgiParseSuccess) {
480	return result;
481	}
482	while (1) {
483	char d[1024];
484	char fvalue[1024];
485	char fname[1024];
486	int bodyLength = 0;
487	char ffileName[1024];
488	char fcontentType[1024];
489	char attr[1024];
490	char value[1024];
491	fvalue[0] = 0;
492	fname[0] = 0;
493	ffileName[0] = 0;
494	fcontentType[0] = 0;
495	out = 0;
496	outf = 0;
497	/* Check for EOF */
498	got = mpRead(mpp, d, 2);
499	if (got < 2) {
500	/* Crude EOF */
501	break;
502	}
503	if ((d[0] == '-') && (d[1] == '-')) {
504	/* Graceful EOF */
505	break;
506	}
507	mpPutBack(mpp, d, 2);
508	/* Read header lines until end of header */
509	while (readHeaderLine(
510	mpp, attr, sizeof(attr), value, sizeof(value)))
511	{
512	char *argNames[3];
513	char *argValues[2];
514	/* Content-Disposition: form-data;
515	name="test"; filename="googley.gif" */
516	if (cgiStrEqNc(attr, "Content-Disposition")) {
517	argNames[0] = "name";
518	argNames[1] = "filename";
519	argNames[2] = 0;
520	argValues[0] = fname;
521	argValues[1] = ffileName;
522	decomposeValue(value,
523	fvalue, sizeof(fvalue),
524	argNames,
525	argValues,
526	1024);
527	} else if (cgiStrEqNc(attr, "Content-Type")) {
528	argNames[0] = 0;
529	decomposeValue(value,
530	fcontentType, sizeof(fcontentType),
531	argNames,
532	0,
533	0);
534	}
535	}
536	if (!cgiStrEqNc(fvalue, "form-data")) {
537	/* Not form data */
538	continue;
539	}
540	/* Body is everything from here until the next
541	boundary. So, set it aside and move past boundary.
542	If a filename was submitted as part of the
543	disposition header, store to a temporary file.
544	Otherwise, store to a memory buffer (it is
545	presumably a regular form field). */
546	if (strlen(ffileName)) {
547	if (getTempFileName(tfileName) != cgiParseSuccess) {
548	return cgiParseIO;
549	}
550	outf = fopen(tfileName, "w+b");
551	} else {
552	outf = 0;
553	tfileName[0] = '\0';
554	}
555	result = afterNextBoundary(mpp, outf, &out, &bodyLength, 0);
556	if (result != cgiParseSuccess) {
557	/* Lack of a boundary here is an error. */
558	if (outf) {
559	fclose(outf);
560	unlink(tfileName);
561	}
562	if (out) {
563	free(out);
564	}
565	return result;
566	}
567	/* OK, we have a new pair, add it to the list. */
568	n = (cgiFormEntry *) malloc(sizeof(cgiFormEntry));
569	if (!n) {
570	goto outOfMemory;
571	}
572	memset(n, 0, sizeof(cgiFormEntry));
573	/* 2.01: one of numerous new casts required
574	to please C++ compilers */
575	n->attr = (char *) malloc(strlen(fname) + 1);
576	if (!n->attr) {
577	goto outOfMemory;
578	}
579	strcpy(n->attr, fname);
580	if (out) {
581	n->value = out;
582	out = 0;
583	} else if (outf) {
584	n->value = (char *) malloc(1);
585	if (!n->value) {
586	goto outOfMemory;
587	}
588	n->value[0] = '\0';
589	fclose(outf);
590	}
591	n->valueLength = bodyLength;
592	n->next = 0;
593	if (!l) {
594	cgiFormEntryFirst = n;
595	} else {
596	l->next = n;
597	}
598	n->fileName = (char *) malloc(strlen(ffileName) + 1);
599	if (!n->fileName) {
600	goto outOfMemory;
601	}
602	strcpy(n->fileName, ffileName);
603	n->contentType = (char *) malloc(strlen(fcontentType) + 1);
604	if (!n->contentType) {
605	goto outOfMemory;
606	}
607	strcpy(n->contentType, fcontentType);
608	n->tfileName = (char *) malloc(strlen(tfileName) + 1);
609	if (!n->tfileName) {
610	goto outOfMemory;
611	}
612	strcpy(n->tfileName, tfileName);
613
614	l = n;
615	}
616	return cgiParseSuccess;
617	outOfMemory:
618	if (n) {
619	if (n->attr) {
620	free(n->attr);
621	}
622	if (n->value) {
623	free(n->value);
624	}
625	if (n->fileName) {
626	free(n->fileName);
627	}
628	if (n->tfileName) {
629	free(n->tfileName);
630	}
631	if (n->contentType) {
632	free(n->contentType);
633	}
634	free(n);
635	}
636	if (out) {
637	free(out);
638	}
639	if (outf) {
640	fclose(outf);
641	unlink(tfileName);
642	}
643	return cgiParseMemory;
644	}
645
646	static cgiParseResultType getTempFileName(char *tfileName)
647	{
648	#ifndef WIN32
649	/* Unix. Use the robust 'mkstemp' function to create
650	a temporary file that is truly unique, with
651	permissions that are truly safe. The
652	fopen-for-write destroys any bogus information
653	written by potential hackers during the brief
654	window between the file's creation and the
655	chmod call (glibc 2.0.6 and lower might
656	otherwise have allowed this). */
657	int outfd;
658	strcpy(tfileName, cgicTempDir "/cgicXXXXXX");
659	outfd = mkstemp(tfileName);
660	if (outfd == -1) {
661	return cgiParseIO;
662	}
663	close(outfd);
664	/* Fix the permissions */
665	if (chmod(tfileName, 0600) != 0) {
666	unlink(tfileName);
667	return cgiParseIO;
668	}
669	#else
670	/* Non-Unix. Do what we can. */
671	if (!tmpnam(tfileName)) {
672	return cgiParseIO;
673	}
674	#endif
675	return cgiParseSuccess;
676	}
677
678
679	#define APPEND(string, char) \
680	{ \
681	if ((string##Len + 1) < string##Space) { \
682	string[string##Len++] = (char); \
683	} \
684	}
685
686	#define RAPPEND(string, ch) \
687	{ \
688	if ((string##Len + 1) == string##Space) { \
689	char *sold = string; \
690	string##Space *= 2; \
691	string = (char *) realloc(string, string##Space); \
692	if (!string) { \
693	string = sold; \
694	goto outOfMemory; \
695	} \
696	} \
697	string[string##Len++] = (ch); \
698	}
699
700	#define BAPPEND(ch) \
701	{ \
702	if (outf) { \
703	putc(ch, outf); \
704	outLen++; \
705	} else if (out) { \
706	RAPPEND(out, ch); \
707	} \
708	}
709
710	cgiParseResultType afterNextBoundary(mpStreamPtr mpp, FILE outf, char *outP,
711	int *bodyLengthP, int first)
712	{
713	int outLen = 0;
714	int outSpace = 256;
715	char *out = 0;
716	cgiParseResultType result;
717	int boffset;
718	int got;
719	char d[2];
720	/* This is large enough, because the buffer into which the
721	original boundary string is fetched is shorter by more
722	than four characters due to the space required for
723	the attribute name */
724	char workingBoundaryData[1024];
725	char *workingBoundary = workingBoundaryData;
726	int workingBoundaryLength;
727	if ((!outf) && (outP)) {
728	out = (char *) malloc(outSpace);
729	if (!out) {
730	goto outOfMemory;
731	}
732	}
733	boffset = 0;
734	sprintf(workingBoundaryData, "\r\n--%s", cgiMultipartBoundary);
735	if (first) {
736	workingBoundary = workingBoundaryData + 2;
737	}
738	workingBoundaryLength = strlen(workingBoundary);
739	while (1) {
740	got = mpRead(mpp, d, 1);
741	if (got != 1) {
742	/* 2.01: cgiParseIO, not cgiFormIO */
743	result = cgiParseIO;
744	goto error;
745	}
746	if (d[0] == workingBoundary[boffset]) {
747	/* We matched the next byte of the boundary.
748	Keep track of our progress into the
749	boundary and don't emit anything. */
750	boffset++;
751	if (boffset == workingBoundaryLength) {
752	break;
753	}
754	} else if (boffset > 0) {
755	/* We matched part, but not all, of the
756	boundary. Now we have to be careful:
757	put back all except the first
758	character and try again. The
759	real boundary could begin in the
760	middle of a false match. We can
761	emit the first character only so far. */
762	BAPPEND(workingBoundary[0]);
763	mpPutBack(mpp,
764	workingBoundary + 1, boffset - 1);
765	mpPutBack(mpp, d, 1);
766	boffset = 0;
767	} else {
768	/* Not presently in the middle of a boundary
769	match; just emit the character. */
770	BAPPEND(d[0]);
771	}
772	}
773	/* Read trailing newline or -- EOF marker. A literal EOF here
774	would be an error in the input stream. */
775	got = mpRead(mpp, d, 2);
776	if (got != 2) {
777	result = cgiParseIO;
778	goto error;
779	}
780	if ((d[0] == '\r') && (d[1] == '\n')) {
781	/* OK, EOL */
782	} else if (d[0] == '-') {
783	/* Probably EOF, but we check for
784	that later */
785	mpPutBack(mpp, d, 2);
786	}
787	if (out && outSpace) {
788	char *oout = out;
789	out[outLen] = '\0';
790	out = (char *) realloc(out, outLen + 1);
791	if (!out) {
792	/* Surprising if it happens; and not fatal! We were
793	just trying to give some space back. We can
794	keep it if we have to. */
795	out = oout;
796	}
797	*outP = out;
798	}
799	if (bodyLengthP) {
800	*bodyLengthP = outLen;
801	}
802	return cgiParseSuccess;
803	outOfMemory:
804	result = cgiParseMemory;
805	if (outP) {
806	if (out) {
807	free(out);
808	}
809	*outP = '\0';
810	}
811	error:
812	if (bodyLengthP) {
813	*bodyLengthP = 0;
814	}
815	if (out) {
816	free(out);
817	}
818	if (outP) {
819	*outP = 0;
820	}
821	return result;
822	}
823
824	static void decomposeValue(char *value,
825	char *mvalue, int mvalueSpace,
826	char **argNames,
827	char **argValues,
828	int argValueSpace)
829	{
830	char argName[1024];
831	int argNameSpace = sizeof(argName);
832	int argNameLen = 0;
833	int mvalueLen = 0;
834	char *argValue;
835	int argNum = 0;
836	while (argNames[argNum]) {
837	if (argValueSpace) {
838	argValues[argNum][0] = '\0';
839	}
840	argNum++;
841	}
842	while (isspace(*value)) {
843	value++;
844	}
845	/* Quoted mvalue */
846	if (*value == '\"') {
847	value++;
848	while ((value) && (value != '\"')) {
849	APPEND(mvalue, *value);
850	value++;
851	}
852	while ((value) && (value != ';')) {
853	value++;
854	}
855	} else {
856	/* Unquoted mvalue */
857	while ((value) && (value != ';')) {
858	APPEND(mvalue, *value);
859	value++;
860	}
861	}
862	if (mvalueSpace) {
863	mvalue[mvalueLen] = '\0';
864	}
865	while (*value == ';') {
866	int argNum;
867	int argValueLen = 0;
868	/* Skip the ; between parameters */
869	value++;
870	/* Now skip leading whitespace */
871	while ((value) && (isspace(value))) {
872	value++;
873	}
874	/* Now read the parameter name */
875	argNameLen = 0;
876	while ((value) && (isalnum(value))) {
877	APPEND(argName, *value);
878	value++;
879	}
880	if (argNameSpace) {
881	argName[argNameLen] = '\0';
882	}
883	while ((value) && isspace(value)) {
884	value++;
885	}
886	if (*value != '=') {
887	/* Malformed line */
888	return;
889	}
890	value++;
891	while ((value) && isspace(value)) {
892	value++;
893	}
894	/* Find the parameter in the argument list, if present */
895	argNum = 0;
896	argValue = 0;
897	while (argNames[argNum]) {
898	if (cgiStrEqNc(argName, argNames[argNum])) {
899	argValue = argValues[argNum];
900	break;
901	}
902	argNum++;
903	}
904	/* Finally, read the parameter value */
905	if (*value == '\"') {
906	value++;
907	while ((value) && (value != '\"')) {
908	if (argValue) {
909	APPEND(argValue, *value);
910	}
911	value++;
912	}
913	while ((value) && (value != ';')) {
914	value++;
915	}
916	} else {
917	/* Unquoted value */
918	while ((value) && (value != ';')) {
919	if (argNames[argNum]) {
920	APPEND(argValue, *value);
921	}
922	value++;
923	}
924	}
925	if (argValueSpace) {
926	argValue[argValueLen] = '\0';
927	}
928	}
929	}
930
931	static int readHeaderLine(
932	mpStreamPtr mpp,
933	char *attr,
934	int attrSpace,
935	char *value,
936	int valueSpace)
937	{
938	int attrLen = 0;
939	int valueLen = 0;
940	int valueFound = 0;
941	while (1) {
942	char d[1];
943	int got = mpRead(mpp, d, 1);
944	if (got != 1) {
945	return 0;
946	}
947	if (d[0] == '\r') {
948	got = mpRead(mpp, d, 1);
949	if (got == 1) {
950	if (d[0] == '\n') {
951	/* OK */
952	} else {
953	mpPutBack(mpp, d, 1);
954	}
955	}
956	break;
957	} else if (d[0] == '\n') {
958	break;
959	} else if ((d[0] == ':') && attrLen) {
960	valueFound = 1;
961	while (mpRead(mpp, d, 1) == 1) {
962	if (!isspace(d[0])) {
963	mpPutBack(mpp, d, 1);
964	break;
965	}
966	}
967	} else if (!valueFound) {
968	if (!isspace(*d)) {
969	if (attrLen < (attrSpace - 1)) {
970	attr[attrLen++] = *d;
971	}
972	}
973	} else if (valueFound) {
974	if (valueLen < (valueSpace - 1)) {
975	value[valueLen++] = *d;
976	}
977	}
978	}
979	if (attrSpace) {
980	attr[attrLen] = '\0';
981	}
982	if (valueSpace) {
983	value[valueLen] = '\0';
984	}
985	if (attrLen && valueLen) {
986	return 1;
987	} else {
988	return 0;
989	}
990	}
991
992	static cgiParseResultType cgiParseGetFormInput() {
993	return cgiParseFormInput(cgiQueryString, cgiContentLength);
994	}
995
996	typedef enum {
997	cgiEscapeRest,
998	cgiEscapeFirst,
999	cgiEscapeSecond
1000	} cgiEscapeState;
1001
1002	typedef enum {
1003	cgiUnescapeSuccess,
1004	cgiUnescapeMemory
1005	} cgiUnescapeResultType;
1006
1007	static cgiUnescapeResultType cgiUnescapeChars(char *sp, char cp, int len);
1008
1009	static cgiParseResultType cgiParseFormInput(char *data, int length) {
1010	/* Scan for pairs, unescaping and storing them as they are found. */
1011	int pos = 0;
1012	cgiFormEntry *n;
1013	cgiFormEntry *l = 0;
1014	while (pos != length) {
1015	int foundEq = 0;
1016	int foundAmp = 0;
1017	int start = pos;
1018	int len = 0;
1019	char *attr;
1020	char *value;
1021	while (pos != length) {
1022	if (data[pos] == '=') {
1023	foundEq = 1;
1024	pos++;
1025	break;
1026	}
1027	pos++;
1028	len++;
1029	}
1030	if (!foundEq) {
1031	break;
1032	}
1033	if (cgiUnescapeChars(&attr, data+start, len)
1034	!= cgiUnescapeSuccess) {
1035	return cgiParseMemory;
1036	}
1037	start = pos;
1038	len = 0;
1039	while (pos != length) {
1040	if (data[pos] == '&') {
1041	foundAmp = 1;
1042	pos++;
1043	break;
1044	}
1045	pos++;
1046	len++;
1047	}
1048	/* The last pair probably won't be followed by a &, but
1049	that's fine, so check for that after accepting it */
1050	if (cgiUnescapeChars(&value, data+start, len)
1051	!= cgiUnescapeSuccess) {
1052	free(attr);
1053	return cgiParseMemory;
1054	}
1055	/* OK, we have a new pair, add it to the list. */
1056	n = (cgiFormEntry *) malloc(sizeof(cgiFormEntry));
1057	if (!n) {
1058	free(attr);
1059	free(value);
1060	return cgiParseMemory;
1061	}
1062	n->attr = attr;
1063	n->value = value;
1064	n->valueLength = strlen(n->value);
1065	n->fileName = (char *) malloc(1);
1066	if (!n->fileName) {
1067	free(attr);
1068	free(value);
1069	free(n);
1070	return cgiParseMemory;
1071	}
1072	n->fileName[0] = '\0';
1073	n->contentType = (char *) malloc(1);
1074	if (!n->contentType) {
1075	free(attr);
1076	free(value);
1077	free(n->fileName);
1078	free(n);
1079	return cgiParseMemory;
1080	}
1081	n->contentType[0] = '\0';
1082	n->tfileName = (char *) malloc(1);
1083	if (!n->tfileName) {
1084	free(attr);
1085	free(value);
1086	free(n->fileName);
1087	free(n->contentType);
1088	free(n);
1089	return cgiParseMemory;
1090	}
1091	n->tfileName[0] = '\0';
1092	n->next = 0;
1093	if (!l) {
1094	cgiFormEntryFirst = n;
1095	} else {
1096	l->next = n;
1097	}
1098	l = n;
1099	if (!foundAmp) {
1100	break;
1101	}
1102	}
1103	return cgiParseSuccess;
1104	}
1105
1106	static int cgiHexValue[256];
1107
1108	cgiUnescapeResultType cgiUnescapeChars(char *sp, char cp, int len) {
1109	char *s;
1110	cgiEscapeState escapeState = cgiEscapeRest;
1111	int escapedValue = 0;
1112	int srcPos = 0;
1113	int dstPos = 0;
1114	s = (char *) malloc(len + 1);
1115	if (!s) {
1116	return cgiUnescapeMemory;
1117	}
1118	while (srcPos < len) {
1119	int ch = cp[srcPos];
1120	if(cgiTreatUrlEncoding==1)
1121	switch (escapeState) {
1122	case cgiEscapeRest:
1123	if (ch == '%') {
1124	escapeState = cgiEscapeFirst;
1125	} else if (ch == '+') {
1126	s[dstPos++] = ' ';
1127	} else {
1128	s[dstPos++] = ch;
1129	}
1130	break;
1131	case cgiEscapeFirst:
1132	escapedValue = cgiHexValue[ch] << 4;
1133	escapeState = cgiEscapeSecond;
1134	break;
1135	case cgiEscapeSecond:
1136	escapedValue += cgiHexValue[ch];
1137	s[dstPos++] = escapedValue;
1138	escapeState = cgiEscapeRest;
1139	break;
1140	}
1141	else
1142	s[dstPos++] = ch;
1143	srcPos++;
1144	}
1145	s[dstPos] = '\0';
1146	*sp = s;
1147	return cgiUnescapeSuccess;
1148	}
1149
1150	static void cgiSetupConstants() {
1151	int i;
1152	for (i=0; (i < 256); i++) {
1153	cgiHexValue[i] = 0;
1154	}
1155	cgiHexValue['0'] = 0;
1156	cgiHexValue['1'] = 1;
1157	cgiHexValue['2'] = 2;
1158	cgiHexValue['3'] = 3;
1159	cgiHexValue['4'] = 4;
1160	cgiHexValue['5'] = 5;
1161	cgiHexValue['6'] = 6;
1162	cgiHexValue['7'] = 7;
1163	cgiHexValue['8'] = 8;
1164	cgiHexValue['9'] = 9;
1165	cgiHexValue['A'] = 10;
1166	cgiHexValue['B'] = 11;
1167	cgiHexValue['C'] = 12;
1168	cgiHexValue['D'] = 13;
1169	cgiHexValue['E'] = 14;
1170	cgiHexValue['F'] = 15;
1171	cgiHexValue['a'] = 10;
1172	cgiHexValue['b'] = 11;
1173	cgiHexValue['c'] = 12;
1174	cgiHexValue['d'] = 13;
1175	cgiHexValue['e'] = 14;
1176	cgiHexValue['f'] = 15;
1177	}
1178
1179	static void cgiFreeResources() {
1180	cgiFormEntry *c = cgiFormEntryFirst;
1181	cgiFormEntry *n;
1182	while (c) {
1183	n = c->next;
1184	free(c->attr);
1185	free(c->value);
1186	free(c->fileName);
1187	free(c->contentType);
1188	if (strlen(c->tfileName)) {
1189	unlink(c->tfileName);
1190	}
1191	free(c->tfileName);
1192	free(c);
1193	c = n;
1194	}
1195	/* If the cgi environment was restored from a saved environment,
1196	then these are in allocated space and must also be freed */
1197	if (cgiRestored) {
1198	free(cgiServerSoftware);
1199	free(cgiServerName);
1200	free(cgiGatewayInterface);
1201	free(cgiServerProtocol);
1202	free(cgiServerPort);
1203	free(cgiRequestMethod);
1204	free(cgiPathInfo);
1205	free(cgiPathTranslated);
1206	free(cgiScriptName);
1207	free(cgiQueryString);
1208	free(cgiRemoteHost);
1209	free(cgiRemoteAddr);
1210	free(cgiAuthType);
1211	free(cgiRemoteUser);
1212	free(cgiRemoteIdent);
1213	free(cgiContentType);
1214	free(cgiAccept);
1215	free(cgiUserAgent);
1216	free(cgiReferrer);
1217	}
1218	/* 2.0: to clean up the environment for cgiReadEnvironment,
1219	we must set these correctly */
1220	cgiFormEntryFirst = 0;
1221	cgiRestored = 0;
1222	}
1223
1224	static cgiFormResultType cgiFormEntryString(
1225	cgiFormEntry e, char result, int max, int newlines);
1226
1227	static cgiFormEntry cgiFormEntryFindFirst(char name);
1228	static cgiFormEntry *cgiFormEntryFindNext();
1229
1230	cgiFormResultType cgiFormString(
1231	char name, char result, int max) {
1232	cgiFormEntry *e;
1233	e = cgiFormEntryFindFirst(name);
1234	if (!e) {
1235	strcpy(result, "");
1236	return cgiFormNotFound;
1237	}
1238	return cgiFormEntryString(e, result, max, 1);
1239	}
1240
1241	cgiFormResultType cgiFormFileName(
1242	char name, char result, int resultSpace)
1243	{
1244	cgiFormEntry *e;
1245	int resultLen = 0;
1246	char *s;
1247	e = cgiFormEntryFindFirst(name);
1248	if (!e) {
1249	strcpy(result, "");
1250	return cgiFormNotFound;
1251	}
1252	s = e->fileName;
1253	while (*s) {
1254	APPEND(result, *s);
1255	s++;
1256	}
1257	if (resultSpace) {
1258	result[resultLen] = '\0';
1259	}
1260	if (!strlen(e->fileName)) {
1261	return cgiFormNoFileName;
1262	} else if (((int) strlen(e->fileName)) > (resultSpace - 1)) {
1263	return cgiFormTruncated;
1264	} else {
1265	return cgiFormSuccess;
1266	}
1267	}
1268
1269	cgiFormResultType cgiFormFileContentType(
1270	char name, char result, int resultSpace)
1271	{
1272	cgiFormEntry *e;
1273	int resultLen = 0;
1274	char *s;
1275	e = cgiFormEntryFindFirst(name);
1276	if (!e) {
1277	if (resultSpace) {
1278	result[0] = '\0';
1279	}
1280	return cgiFormNotFound;
1281	}
1282	s = e->contentType;
1283	while (*s) {
1284	APPEND(result, *s);
1285	s++;
1286	}
1287	if (resultSpace) {
1288	result[resultLen] = '\0';
1289	}
1290	if (!strlen(e->contentType)) {
1291	return cgiFormNoContentType;
1292	} else if (((int) strlen(e->contentType)) > (resultSpace - 1)) {
1293	return cgiFormTruncated;
1294	} else {
1295	return cgiFormSuccess;
1296	}
1297	}
1298
1299	cgiFormResultType cgiFormFileSize(
1300	char name, int sizeP)
1301	{
1302	cgiFormEntry *e;
1303	e = cgiFormEntryFindFirst(name);
1304	if (!e) {
1305	if (sizeP) {
1306	*sizeP = 0;
1307	}
1308	return cgiFormNotFound;
1309	} else if (!strlen(e->tfileName)) {
1310	if (sizeP) {
1311	*sizeP = 0;
1312	}
1313	return cgiFormNotAFile;
1314	} else {
1315	if (sizeP) {
1316	*sizeP = e->valueLength;
1317	}
1318	return cgiFormSuccess;
1319	}
1320	}
1321
1322	typedef struct cgiFileStruct {
1323	FILE *in;
1324	} cgiFile;
1325
1326	cgiFormResultType cgiFormFileOpen(
1327	char name, cgiFilePtr cfpp)
1328	{
1329	cgiFormEntry *e;
1330	cgiFilePtr cfp;
1331	e = cgiFormEntryFindFirst(name);
1332	if (!e) {
1333	*cfpp = 0;
1334	return cgiFormNotFound;
1335	}
1336	if (!strlen(e->tfileName)) {
1337	*cfpp = 0;
1338	return cgiFormNotAFile;
1339	}
1340	cfp = (cgiFilePtr) malloc(sizeof(cgiFile));
1341	if (!cfp) {
1342	*cfpp = 0;
1343	return cgiFormMemory;
1344	}
1345	cfp->in = fopen(e->tfileName, "rb");
1346	if (!cfp->in) {
1347	free(cfp);
1348	return cgiFormIO;
1349	}
1350	*cfpp = cfp;
1351	return cgiFormSuccess;
1352	}
1353
1354	cgiFormResultType cgiFormFileRead(
1355	cgiFilePtr cfp, char *buffer,
1356	int bufferSize, int *gotP)
1357	{
1358	int got = 0;
1359	if (!cfp) {
1360	return cgiFormOpenFailed;
1361	}
1362	got = fread(buffer, 1, bufferSize, cfp->in);
1363	if (got <= 0) {
1364	return cgiFormEOF;
1365	}
1366	*gotP = got;
1367	return cgiFormSuccess;
1368	}
1369
1370	cgiFormResultType cgiFormFileClose(cgiFilePtr cfp)
1371	{
1372	if (!cfp) {
1373	return cgiFormOpenFailed;
1374	}
1375	fclose(cfp->in);
1376	free(cfp);
1377	return cgiFormSuccess;
1378	}
1379
1380	cgiFormResultType cgiFormStringNoNewlines(
1381	char name, char result, int max) {
1382	cgiFormEntry *e;
1383	e = cgiFormEntryFindFirst(name);
1384	if (!e) {
1385	strcpy(result, "");
1386	return cgiFormNotFound;
1387	}
1388	return cgiFormEntryString(e, result, max, 0);
1389	}
1390
1391	cgiFormResultType cgiFormStringMultiple(
1392	char name, char **result) {
1393	char **stringArray;
1394	cgiFormEntry *e;
1395	int i;
1396	int total = 0;
1397	/* Make two passes. One would be more efficient, but this
1398	function is not commonly used. The select menu and
1399	radio box functions are faster. */
1400	e = cgiFormEntryFindFirst(name);
1401	if (e != 0) {
1402	do {
1403	total++;
1404	} while ((e = cgiFormEntryFindNext()) != 0);
1405	}
1406	stringArray = (char *) malloc(sizeof(char ) * (total + 1));
1407	if (!stringArray) {
1408	*result = 0;
1409	return cgiFormMemory;
1410	}
1411	/* initialize all entries to null; the last will stay that way */
1412	for (i=0; (i <= total); i++) {
1413	stringArray[i] = 0;
1414	}
1415	/* Now go get the entries */
1416	e = cgiFormEntryFindFirst(name);
1417	#ifdef CGICDEBUG
1418	CGICDEBUGSTART
1419	fprintf(dout, "StringMultiple Beginning\n");
1420	CGICDEBUGEND
1421	#endif /* CGICDEBUG */
1422	if (e) {
1423	i = 0;
1424	do {
1425	int max = (int) (strlen(e->value) + 1);
1426	stringArray[i] = (char *) malloc(max);
1427	if (stringArray[i] == 0) {
1428	/* Memory problems */
1429	cgiStringArrayFree(stringArray);
1430	*result = 0;
1431	return cgiFormMemory;
1432	}
1433	strcpy(stringArray[i], e->value);
1434	cgiFormEntryString(e, stringArray[i], max, 1);
1435	i++;
1436	} while ((e = cgiFormEntryFindNext()) != 0);
1437	*result = stringArray;
1438	#ifdef CGICDEBUG
1439	CGICDEBUGSTART
1440	fprintf(dout, "StringMultiple Succeeding\n");
1441	CGICDEBUGEND
1442	#endif /* CGICDEBUG */
1443	return cgiFormSuccess;
1444	} else {
1445	*result = stringArray;
1446	#ifdef CGICDEBUG
1447	CGICDEBUGSTART
1448	fprintf(dout, "StringMultiple found nothing\n");
1449	CGICDEBUGEND
1450	#endif /* CGICDEBUG */
1451	return cgiFormNotFound;
1452	}
1453	}
1454
1455	cgiFormResultType cgiFormStringSpaceNeeded(
1456	char name, int result) {
1457	cgiFormEntry *e;
1458	e = cgiFormEntryFindFirst(name);
1459	if (!e) {
1460	*result = 1;
1461	return cgiFormNotFound;
1462	}
1463	*result = ((int) strlen(e->value)) + 1;
1464	return cgiFormSuccess;
1465	}
1466
1467	static cgiFormResultType cgiFormEntryString(
1468	cgiFormEntry e, char result, int max, int newlines) {
1469	char dp, sp;
1470	int truncated = 0;
1471	int len = 0;
1472	int avail = max-1;
1473	int crCount = 0;
1474	int lfCount = 0;
1475	dp = result;
1476	sp = e->value;
1477	while (1) {
1478	int ch;
1479	/* 1.07: don't check for available space now.
1480	We check for it immediately before adding
1481	an actual character. 1.06 handled the
1482	trailing null of the source string improperly,
1483	resulting in a cgiFormTruncated error. */
1484	ch = *sp;
1485	/* Fix the CR/LF, LF, CR nightmare: watch for
1486	consecutive bursts of CRs and LFs in whatever
1487	pattern, then actually output the larger number
1488	of LFs. Consistently sane, yet it still allows
1489	consecutive blank lines when the user
1490	actually intends them. */
1491	if ((ch == 13) \|\| (ch == 10)) {
1492	if (ch == 13) {
1493	crCount++;
1494	} else {
1495	lfCount++;
1496	}
1497	} else {
1498	if (crCount \|\| lfCount) {
1499	int lfsAdd = crCount;
1500	if (lfCount > crCount) {
1501	lfsAdd = lfCount;
1502	}
1503	/* Stomp all newlines if desired */
1504	if (!newlines) {
1505	lfsAdd = 0;
1506	}
1507	while (lfsAdd) {
1508	if (len >= avail) {
1509	truncated = 1;
1510	break;
1511	}
1512	*dp = 10;
1513	dp++;
1514	lfsAdd--;
1515	len++;
1516	}
1517	crCount = 0;
1518	lfCount = 0;
1519	}
1520	if (ch == '\0') {
1521	/* The end of the source string */
1522	break;
1523	}
1524	/* 1.06: check available space before adding
1525	the character, because a previously added
1526	LF may have brought us to the limit */
1527	if (len >= avail) {
1528	truncated = 1;
1529	break;
1530	}
1531	*dp = ch;
1532	dp++;
1533	len++;
1534	}
1535	sp++;
1536	}
1537	*dp = '\0';
1538	if (truncated) {
1539	return cgiFormTruncated;
1540	} else if (!len) {
1541	return cgiFormEmpty;
1542	} else {
1543	return cgiFormSuccess;
1544	}
1545	}
1546
1547	static int cgiFirstNonspaceChar(char *s);
1548
1549	cgiFormResultType cgiFormInteger(
1550	char name, int result, int defaultV) {
1551	cgiFormEntry *e;
1552	int ch;
1553	e = cgiFormEntryFindFirst(name);
1554	if (!e) {
1555	*result = defaultV;
1556	return cgiFormNotFound;
1557	}
1558	if (!strlen(e->value)) {
1559	*result = defaultV;
1560	return cgiFormEmpty;
1561	}
1562	ch = cgiFirstNonspaceChar(e->value);
1563	if (!(isdigit(ch)) && (ch != '-') && (ch != '+')) {
1564	*result = defaultV;
1565	return cgiFormBadType;
1566	} else {
1567	*result = atoi(e->value);
1568	return cgiFormSuccess;
1569	}
1570	}
1571
1572	cgiFormResultType cgiFormIntegerBounded(
1573	char name, int result, int min, int max, int defaultV) {
1574	cgiFormResultType error = cgiFormInteger(name, result, defaultV);
1575	if (error != cgiFormSuccess) {
1576	return error;
1577	}
1578	if (*result < min) {
1579	*result = min;
1580	return cgiFormConstrained;
1581	}
1582	if (*result > max) {
1583	*result = max;
1584	return cgiFormConstrained;
1585	}
1586	return cgiFormSuccess;
1587	}
1588
1589	cgiFormResultType cgiFormDouble(
1590	char name, double result, double defaultV) {
1591	cgiFormEntry *e;
1592	int ch;
1593	e = cgiFormEntryFindFirst(name);
1594	if (!e) {
1595	*result = defaultV;
1596	return cgiFormNotFound;
1597	}
1598	if (!strlen(e->value)) {
1599	*result = defaultV;
1600	return cgiFormEmpty;
1601	}
1602	ch = cgiFirstNonspaceChar(e->value);
1603	if (!(isdigit(ch)) && (ch != '.') && (ch != '-') && (ch != '+')) {
1604	*result = defaultV;
1605	return cgiFormBadType;
1606	} else {
1607	*result = atof(e->value);
1608	return cgiFormSuccess;
1609	}
1610	}
1611
1612	cgiFormResultType cgiFormDoubleBounded(
1613	char name, double result, double min, double max, double defaultV) {
1614	cgiFormResultType error = cgiFormDouble(name, result, defaultV);
1615	if (error != cgiFormSuccess) {
1616	return error;
1617	}
1618	if (*result < min) {
1619	*result = min;
1620	return cgiFormConstrained;
1621	}
1622	if (*result > max) {
1623	*result = max;
1624	return cgiFormConstrained;
1625	}
1626	return cgiFormSuccess;
1627	}
1628
1629	cgiFormResultType cgiFormSelectSingle(
1630	char name, char *choicesText, int choicesTotal,
1631	int *result, int defaultV)
1632	{
1633	cgiFormEntry *e;
1634	int i;
1635	e = cgiFormEntryFindFirst(name);
1636	#ifdef CGICDEBUG
1637	CGICDEBUGSTART
1638	fprintf(dout, "%d\n", (int) e);
1639	CGICDEBUGEND
1640	#endif /* CGICDEBUG */
1641	if (!e) {
1642	*result = defaultV;
1643	return cgiFormNotFound;
1644	}
1645	for (i=0; (i < choicesTotal); i++) {
1646	#ifdef CGICDEBUG
1647	CGICDEBUGSTART
1648	fprintf(dout, "%s %s\n", choicesText[i], e->value);
1649	CGICDEBUGEND
1650	#endif /* CGICDEBUG */
1651	if (cgiStrEq(choicesText[i], e->value)) {
1652	#ifdef CGICDEBUG
1653	CGICDEBUGSTART
1654	fprintf(dout, "MATCH\n");
1655	CGICDEBUGEND
1656	#endif /* CGICDEBUG */
1657	*result = i;
1658	return cgiFormSuccess;
1659	}
1660	}
1661	*result = defaultV;
1662	return cgiFormNoSuchChoice;
1663	}
1664
1665	cgiFormResultType cgiFormSelectMultiple(
1666	char name, char *choicesText, int choicesTotal,
1667	int result, int invalid)
1668	{
1669	cgiFormEntry *e;
1670	int i;
1671	int hits = 0;
1672	int invalidE = 0;
1673	for (i=0; (i < choicesTotal); i++) {
1674	result[i] = 0;
1675	}
1676	e = cgiFormEntryFindFirst(name);
1677	if (!e) {
1678	*invalid = invalidE;
1679	return cgiFormNotFound;
1680	}
1681	do {
1682	int hit = 0;
1683	for (i=0; (i < choicesTotal); i++) {
1684	if (cgiStrEq(choicesText[i], e->value)) {
1685	result[i] = 1;
1686	hits++;
1687	hit = 1;
1688	break;
1689	}
1690	}
1691	if (!(hit)) {
1692	invalidE++;
1693	}
1694	} while ((e = cgiFormEntryFindNext()) != 0);
1695
1696	*invalid = invalidE;
1697
1698	if (hits) {
1699	return cgiFormSuccess;
1700	} else {
1701	return cgiFormNotFound;
1702	}
1703	}
1704
1705	cgiFormResultType cgiFormCheckboxSingle(
1706	char *name)
1707	{
1708	cgiFormEntry *e;
1709	e = cgiFormEntryFindFirst(name);
1710	if (!e) {
1711	return cgiFormNotFound;
1712	}
1713	return cgiFormSuccess;
1714	}
1715
1716	extern cgiFormResultType cgiFormCheckboxMultiple(
1717	char name, char *valuesText, int valuesTotal,
1718	int result, int invalid)
1719	{
1720	/* Implementation is identical to cgiFormSelectMultiple. */
1721	return cgiFormSelectMultiple(name, valuesText,
1722	valuesTotal, result, invalid);
1723	}
1724
1725	cgiFormResultType cgiFormRadio(
1726	char *name,
1727	char *valuesText, int valuesTotal, int result, int defaultV)
1728	{
1729	/* Implementation is identical to cgiFormSelectSingle. */
1730	return cgiFormSelectSingle(name, valuesText, valuesTotal,
1731	result, defaultV);
1732	}
1733
1734	cgiFormResultType cgiCookieString(
1735	char *name,
1736	char *value,
1737	int space)
1738	{
1739	char *p = cgiCookie;
1740	while (*p) {
1741	char *n = name;
1742	/* 2.02: if cgiCookie is exactly equal to name, this
1743	can cause an overrun. The server probably wouldn't
1744	allow it, since a name without values makes no sense
1745	-- but then again it might not check, so this is a
1746	genuine security concern. Thanks to Nicolas
1747	Tomadakis. */
1748	while (p == n) {
1749	if ((p == '\0') && (n == '\0')) {
1750	/* Malformed cookie header from client */
1751	return cgiFormNotFound;
1752	}
1753	p++;
1754	n++;
1755	}
1756	if ((!n) && (p == '=')) {
1757	p++;
1758	while ((p != ';') && (p != '\0') &&
1759	(space > 1))
1760	{
1761	value = p;
1762	value++;
1763	p++;
1764	space--;
1765	}
1766	if (space > 0) {
1767	*value = '\0';
1768	}
1769	/* Correct parens: 2.02. Thanks to
1770	Mathieu Villeneuve-Belair. */
1771	if (!(((p) == ';') \|\| ((p) == '\0')))
1772	{
1773	return cgiFormTruncated;
1774	} else {
1775	return cgiFormSuccess;
1776	}
1777	} else {
1778	/* Skip to next cookie */
1779	while (*p) {
1780	if (*p == ';') {
1781	break;
1782	}
1783	p++;
1784	}
1785	if (!*p) {
1786	/* 2.01: default to empty */
1787	if (space) {
1788	*value = '\0';
1789	}
1790	return cgiFormNotFound;
1791	}
1792	p++;
1793	/* Allow whitespace after semicolon */
1794	while ((p) && isspace(p)) {
1795	p++;
1796	}
1797	}
1798	}
1799	/* 2.01: actually the above loop never terminates except
1800	with a return, but do this to placate gcc */
1801	if (space) {
1802	*value = '\0';
1803	}
1804	return cgiFormNotFound;
1805	}
1806
1807	cgiFormResultType cgiCookieInteger(
1808	char *name,
1809	int *result,
1810	int defaultV)
1811	{
1812	char buffer[256];
1813	cgiFormResultType r =
1814	cgiCookieString(name, buffer, sizeof(buffer));
1815	if (r != cgiFormSuccess) {
1816	*result = defaultV;
1817	} else {
1818	*result = atoi(buffer);
1819	}
1820	return r;
1821	}
1822
1823	void cgiHeaderCookieSetInteger(char *name, int value, int secondsToLive,
1824	char path, char domain)
1825	{
1826	char svalue[256];
1827	sprintf(svalue, "%d", value);
1828	cgiHeaderCookieSetString(name, svalue, secondsToLive, path, domain);
1829	}
1830
1831	char *days[] = {
1832	"Sun",
1833	"Mon",
1834	"Tue",
1835	"Wed",
1836	"Thu",
1837	"Fri",
1838	"Sat"
1839	};
1840
1841	char *months[] = {
1842	"Jan",
1843	"Feb",
1844	"Mar",
1845	"Apr",
1846	"May",
1847	"Jun",
1848	"Jul",
1849	"Aug",
1850	"Sep",
1851	"Oct",
1852	"Nov",
1853	"Dec"
1854	};
1855
1856	void cgiHeaderCookieSetString(char name, char value, int secondsToLive,
1857	char path, char domain)
1858	{
1859	/* cgic 2.02: simpler and more widely compatible implementation.
1860	Thanks to Chunfu Lai.
1861	cgic 2.03: yes, but it didn't work. Reimplemented by
1862	Thomas Boutell. ; after last element was a bug.
1863	Examples of real world cookies that really work:
1864	Set-Cookie: MSNADS=UM=; domain=.slate.com;
1865	expires=Tue, 26-Apr-2022 19:00:00 GMT; path=/
1866	Set-Cookie: MC1=V=3&ID=b5bc08af2b8a43ff85fcb5efd8b238f0;
1867	domain=.slate.com; expires=Mon, 04-Oct-2021 19:00:00 GMT; path=/
1868	*/
1869	time_t now;
1870	time_t then;
1871	struct tm *gt;
1872	time(&now);
1873	then = now + secondsToLive;
1874	gt = gmtime(&then);
1875	fprintf(cgiOut,
1876	"Set-Cookie: %s=%s; domain=%s; expires=%s, %02d-%s-%04d %02d:%02d:%02d GMT; path=%s\r\n",
1877	name, value, domain,
1878	days[gt->tm_wday],
1879	gt->tm_mday,
1880	months[gt->tm_mon],
1881	gt->tm_year + 1900,
1882	gt->tm_hour,
1883	gt->tm_min,
1884	gt->tm_sec,
1885	path);
1886	}
1887
1888	void cgiHeaderLocation(char *redirectUrl) {
1889	fprintf(cgiOut, "Location: %s\r\n\r\n", redirectUrl);
1890	}
1891
1892	void cgiHeaderStatus(int status, char *statusMessage) {
1893	fprintf(cgiOut, "Status: %d %s\r\n\r\n", status, statusMessage);
1894	}
1895
1896	void cgiHeaderContentType(char *mimeType) {
1897	fprintf(cgiOut, "Content-type: %s\r\n\r\n", mimeType);
1898	}
1899
1900	static int cgiWriteString(FILE out, char s);
1901
1902	static int cgiWriteInt(FILE *out, int i);
1903
1904	#define CGIC_VERSION "2.0"
1905
1906	cgiEnvironmentResultType cgiWriteEnvironment(char *filename) {
1907	FILE *out;
1908	cgiFormEntry *e;
1909	/* Be sure to open in binary mode */
1910	out = fopen(filename, "wb");
1911	if (!out) {
1912	/* Can't create file */
1913	return cgiEnvironmentIO;
1914	}
1915	if (!cgiWriteString(out, "CGIC2.0")) {
1916	goto error;
1917	}
1918	if (!cgiWriteString(out, cgiServerSoftware)) {
1919	goto error;
1920	}
1921	if (!cgiWriteString(out, cgiServerName)) {
1922	goto error;
1923	}
1924	if (!cgiWriteString(out, cgiGatewayInterface)) {
1925	goto error;
1926	}
1927	if (!cgiWriteString(out, cgiServerProtocol)) {
1928	goto error;
1929	}
1930	if (!cgiWriteString(out, cgiServerPort)) {
1931	goto error;
1932	}
1933	if (!cgiWriteString(out, cgiRequestMethod)) {
1934	goto error;
1935	}
1936	if (!cgiWriteString(out, cgiPathInfo)) {
1937	goto error;
1938	}
1939	if (!cgiWriteString(out, cgiPathTranslated)) {
1940	goto error;
1941	}
1942	if (!cgiWriteString(out, cgiScriptName)) {
1943	goto error;
1944	}
1945	if (!cgiWriteString(out, cgiQueryString)) {
1946	goto error;
1947	}
1948	if (!cgiWriteString(out, cgiRemoteHost)) {
1949	goto error;
1950	}
1951	if (!cgiWriteString(out, cgiRemoteAddr)) {
1952	goto error;
1953	}
1954	if (!cgiWriteString(out, cgiAuthType)) {
1955	goto error;
1956	}
1957	if (!cgiWriteString(out, cgiRemoteUser)) {
1958	goto error;
1959	}
1960	if (!cgiWriteString(out, cgiRemoteIdent)) {
1961	goto error;
1962	}
1963	if (!cgiWriteString(out, cgiContentType)) {
1964	goto error;
1965	}
1966	if (!cgiWriteString(out, cgiAccept)) {
1967	goto error;
1968	}
1969	if (!cgiWriteString(out, cgiUserAgent)) {
1970	goto error;
1971	}
1972	if (!cgiWriteString(out, cgiReferrer)) {
1973	goto error;
1974	}
1975	if (!cgiWriteString(out, cgiCookie)) {
1976	goto error;
1977	}
1978	if (!cgiWriteInt(out, cgiContentLength)) {
1979	goto error;
1980	}
1981	e = cgiFormEntryFirst;
1982	while (e) {
1983	cgiFilePtr fp;
1984	if (!cgiWriteString(out, e->attr)) {
1985	goto error;
1986	}
1987	if (!cgiWriteString(out, e->value)) {
1988	goto error;
1989	}
1990	/* New 2.0 fields and file uploads */
1991	if (!cgiWriteString(out, e->fileName)) {
1992	goto error;
1993	}
1994	if (!cgiWriteString(out, e->contentType)) {
1995	goto error;
1996	}
1997	if (!cgiWriteInt(out, e->valueLength)) {
1998	goto error;
1999	}
2000	if (cgiFormFileOpen(e->attr, &fp) == cgiFormSuccess) {
2001	char buffer[1024];
2002	int got;
2003	if (!cgiWriteInt(out, 1)) {
2004	cgiFormFileClose(fp);
2005	goto error;
2006	}
2007	while (cgiFormFileRead(fp, buffer,
2008	sizeof(buffer), &got) == cgiFormSuccess)
2009	{
2010	if (((int) fwrite(buffer, 1, got, out)) != got) {
2011	cgiFormFileClose(fp);
2012	goto error;
2013	}
2014	}
2015	if (cgiFormFileClose(fp) != cgiFormSuccess) {
2016	goto error;
2017	}
2018	} else {
2019	if (!cgiWriteInt(out, 0)) {
2020	goto error;
2021	}
2022	}
2023	e = e->next;
2024	}
2025	fclose(out);
2026	return cgiEnvironmentSuccess;
2027	error:
2028	fclose(out);
2029	/* If this function is not defined in your system,
2030	you must substitute the appropriate
2031	file-deletion function. */
2032	unlink(filename);
2033	return cgiEnvironmentIO;
2034	}
2035
2036	static int cgiWriteString(FILE out, char s) {
2037	int len = (int) strlen(s);
2038	cgiWriteInt(out, len);
2039	if (((int) fwrite(s, 1, len, out)) != len) {
2040	return 0;
2041	}
2042	return 1;
2043	}
2044
2045	static int cgiWriteInt(FILE *out, int i) {
2046	if (!fwrite(&i, sizeof(int), 1, out)) {
2047	return 0;
2048	}
2049	return 1;
2050	}
2051
2052	static int cgiReadString(FILE out, char *s);
2053
2054	static int cgiReadInt(FILE out, int i);
2055
2056	cgiEnvironmentResultType cgiReadEnvironment(char *filename) {
2057	FILE *in;
2058	cgiFormEntry e = 0, p;
2059	char *version;
2060	/* Prevent compiler warnings */
2061	cgiEnvironmentResultType result = cgiEnvironmentIO;
2062	/* Free any existing data first */
2063	cgiFreeResources();
2064	/* Be sure to open in binary mode */
2065	in = fopen(filename, "rb");
2066	if (!in) {
2067	/* Can't access file */
2068	return cgiEnvironmentIO;
2069	}
2070	if (!cgiReadString(in, &version)) {
2071	goto error;
2072	}
2073	if (strcmp(version, "CGIC" CGIC_VERSION)) {
2074	/* 2.02: Merezko Oleg */
2075	free(version);
2076	return cgiEnvironmentWrongVersion;
2077	}
2078	/* 2.02: Merezko Oleg */
2079	free(version);
2080	if (!cgiReadString(in, &cgiServerSoftware)) {
2081	goto error;
2082	}
2083	if (!cgiReadString(in, &cgiServerName)) {
2084	goto error;
2085	}
2086	if (!cgiReadString(in, &cgiGatewayInterface)) {
2087	goto error;
2088	}
2089	if (!cgiReadString(in, &cgiServerProtocol)) {
2090	goto error;
2091	}
2092	if (!cgiReadString(in, &cgiServerPort)) {
2093	goto error;
2094	}
2095	if (!cgiReadString(in, &cgiRequestMethod)) {
2096	goto error;
2097	}
2098	if (!cgiReadString(in, &cgiPathInfo)) {
2099	goto error;
2100	}
2101	if (!cgiReadString(in, &cgiPathTranslated)) {
2102	goto error;
2103	}
2104	if (!cgiReadString(in, &cgiScriptName)) {
2105	goto error;
2106	}
2107	if (!cgiReadString(in, &cgiQueryString)) {
2108	goto error;
2109	}
2110	if (!cgiReadString(in, &cgiRemoteHost)) {
2111	goto error;
2112	}
2113	if (!cgiReadString(in, &cgiRemoteAddr)) {
2114	goto error;
2115	}
2116	if (!cgiReadString(in, &cgiAuthType)) {
2117	goto error;
2118	}
2119	if (!cgiReadString(in, &cgiRemoteUser)) {
2120	goto error;
2121	}
2122	if (!cgiReadString(in, &cgiRemoteIdent)) {
2123	goto error;
2124	}
2125	if (!cgiReadString(in, &cgiContentType)) {
2126	goto error;
2127	}
2128	if (!cgiReadString(in, &cgiAccept)) {
2129	goto error;
2130	}
2131	if (!cgiReadString(in, &cgiUserAgent)) {
2132	goto error;
2133	}
2134	if (!cgiReadString(in, &cgiReferrer)) {
2135	goto error;
2136	}
2137	/* 2.0 */
2138	if (!cgiReadString(in, &cgiCookie)) {
2139	goto error;
2140	}
2141	if (!cgiReadInt(in, &cgiContentLength)) {
2142	goto error;
2143	}
2144	p = 0;
2145	while (1) {
2146	int fileFlag;
2147	e = (cgiFormEntry *) calloc(1, sizeof(cgiFormEntry));
2148	if (!e) {
2149	cgiFreeResources();
2150	fclose(in);
2151	return cgiEnvironmentMemory;
2152	}
2153	memset(e, 0, sizeof(cgiFormEntry));
2154	if (!cgiReadString(in, &e->attr)) {
2155	/* This means we've reached the end of the list. */
2156	/* 2.02: thanks to Merezko Oleg */
2157	free(e);
2158	break;
2159	}
2160	if (!cgiReadString(in, &e->value)) {
2161	goto outOfMemory;
2162	}
2163	if (!cgiReadString(in, &e->fileName)) {
2164	goto outOfMemory;
2165	}
2166	if (!cgiReadString(in, &e->contentType)) {
2167	goto outOfMemory;
2168	}
2169	if (!cgiReadInt(in, &e->valueLength)) {
2170	goto outOfMemory;
2171	}
2172	if (!cgiReadInt(in, &fileFlag)) {
2173	goto outOfMemory;
2174	}
2175	if (fileFlag) {
2176	char buffer[1024];
2177	FILE *out;
2178	char tfileName[1024];
2179	int got;
2180	int len = e->valueLength;
2181	if (getTempFileName(tfileName)
2182	!= cgiParseSuccess)
2183	{
2184	result = cgiEnvironmentIO;
2185	goto error;
2186	}
2187	out = fopen(tfileName, "w+b");
2188	if (!out) {
2189	result = cgiEnvironmentIO;
2190	goto error;
2191	}
2192	while (len > 0) {
2193	/* 2.01: try is a bad variable name in
2194	C++, and it wasn't being used
2195	properly either */
2196	int tryr = len;
2197	if (tryr > ((int) sizeof(buffer))) {
2198	tryr = sizeof(buffer);
2199	}
2200	got = fread(buffer, 1, tryr, in);
2201	if (got <= 0) {
2202	result = cgiEnvironmentIO;
2203	fclose(out);
2204	unlink(tfileName);
2205	goto error;
2206	}
2207	if (((int) fwrite(buffer, 1, got, out)) != got) {
2208	result = cgiEnvironmentIO;
2209	fclose(out);
2210	unlink(tfileName);
2211	goto error;
2212	}
2213	len -= got;
2214	}
2215	/* cgic 2.05: should be fclose not rewind */
2216	fclose(out);
2217	e->tfileName = (char *) malloc((int) strlen(tfileName) + 1);
2218	if (!e->tfileName) {
2219	result = cgiEnvironmentMemory;
2220	unlink(tfileName);
2221	goto error;
2222	}
2223	strcpy(e->tfileName, tfileName);
2224	} else {
2225	e->tfileName = (char *) malloc(1);
2226	if (!e->tfileName) {
2227	result = cgiEnvironmentMemory;
2228	goto error;
2229	}
2230	}
2231	e->next = 0;
2232	if (p) {
2233	p->next = e;
2234	} else {
2235	cgiFormEntryFirst = e;
2236	}
2237	p = e;
2238	}
2239	fclose(in);
2240	cgiRestored = 1;
2241	return cgiEnvironmentSuccess;
2242	outOfMemory:
2243	result = cgiEnvironmentMemory;
2244	error:
2245	cgiFreeResources();
2246	fclose(in);
2247	if (e) {
2248	if (e->attr) {
2249	free(e->attr);
2250	}
2251	if (e->value) {
2252	free(e->value);
2253	}
2254	if (e->fileName) {
2255	free(e->fileName);
2256	}
2257	if (e->contentType) {
2258	free(e->contentType);
2259	}
2260	if (e->tfileName) {
2261	free(e->tfileName);
2262	}
2263	free(e);
2264	}
2265	return result;
2266	}
2267
2268	static int cgiReadString(FILE in, char *s) {
2269	int len;
2270	/* 2.0 fix: test cgiReadInt for failure! */
2271	if (!cgiReadInt(in, &len)) {
2272	return 0;
2273	}
2274	s = (char ) malloc(len + 1);
2275	if (!(*s)) {
2276	return 0;
2277	}
2278	if (((int) fread(*s, 1, len, in)) != len) {
2279	return 0;
2280	}
2281	(*s)[len] = '\0';
2282	return 1;
2283	}
2284
2285	static int cgiReadInt(FILE out, int i) {
2286	if (!fread(i, sizeof(int), 1, out)) {
2287	return 0;
2288	}
2289	return 1;
2290	}
2291
2292	static int cgiStrEqNc(char s1, char s2) {
2293	while(1) {
2294	if (!(*s1)) {
2295	if (!(*s2)) {
2296	return 1;
2297	} else {
2298	return 0;
2299	}
2300	} else if (!(*s2)) {
2301	return 0;
2302	}
2303	if (isalpha(*s1)) {
2304	if (tolower(s1) != tolower(s2)) {
2305	return 0;
2306	}
2307	} else if ((s1) != (s2)) {
2308	return 0;
2309	}
2310	s1++;
2311	s2++;
2312	}
2313	}
2314
2315	static int cgiStrBeginsNc(char s1, char s2) {
2316	while(1) {
2317	if (!(*s2)) {
2318	return 1;
2319	} else if (!(*s1)) {
2320	return 0;
2321	}
2322	if (isalpha(*s1)) {
2323	if (tolower(s1) != tolower(s2)) {
2324	return 0;
2325	}
2326	} else if ((s1) != (s2)) {
2327	return 0;
2328	}
2329	s1++;
2330	s2++;
2331	}
2332	}
2333
2334	static char *cgiFindTarget = 0;
2335	static cgiFormEntry *cgiFindPos = 0;
2336
2337	static cgiFormEntry cgiFormEntryFindFirst(char name) {
2338	cgiFindTarget = name;
2339	cgiFindPos = cgiFormEntryFirst;
2340	return cgiFormEntryFindNext();
2341	}
2342
2343	static cgiFormEntry *cgiFormEntryFindNext() {
2344	while (cgiFindPos) {
2345	cgiFormEntry *c = cgiFindPos;
2346	cgiFindPos = c->next;
2347	if (!strcmp(c -> attr, cgiFindTarget)) {
2348	return c;
2349	}
2350	}
2351	return 0;
2352	}
2353
2354	static int cgiFirstNonspaceChar(char *s) {
2355	int len = strspn(s, " \n\r\t");
2356	return s[len];
2357	}
2358
2359	void cgiStringArrayFree(char **stringArray) {
2360	char *p;
2361	char **arrayItself = stringArray;
2362	p = *stringArray;
2363	while (p) {
2364	free(p);
2365	stringArray++;
2366	p = *stringArray;
2367	}
2368	/* 2.0: free the array itself! */
2369	free(arrayItself);
2370	}
2371
2372	cgiFormResultType cgiCookies(char ***result) {
2373	char **stringArray;
2374	int i;
2375	int total = 0;
2376	char *p;
2377	char *n;
2378	p = cgiCookie;
2379	while (*p) {
2380	if (*p == '=') {
2381	total++;
2382	}
2383	p++;
2384	}
2385	stringArray = (char *) malloc(sizeof(char ) * (total + 1));
2386	if (!stringArray) {
2387	*result = 0;
2388	return cgiFormMemory;
2389	}
2390	/* initialize all entries to null; the last will stay that way */
2391	for (i=0; (i <= total); i++) {
2392	stringArray[i] = 0;
2393	}
2394	i = 0;
2395	p = cgiCookie;
2396	while (*p) {
2397	while (p && isspace(p)) {
2398	p++;
2399	}
2400	n = p;
2401	while (p && (p != '=')) {
2402	p++;
2403	}
2404	if (p != n) {
2405	stringArray[i] = (char *) malloc((p - n) + 1);
2406	if (!stringArray[i]) {
2407	cgiStringArrayFree(stringArray);
2408	*result = 0;
2409	return cgiFormMemory;
2410	}
2411	memcpy(stringArray[i], n, p - n);
2412	stringArray[i][p - n] = '\0';
2413	i++;
2414	}
2415	while (p && (p != ';')) {
2416	p++;
2417	}
2418	if (!*p) {
2419	break;
2420	}
2421	if (*p == ';') {
2422	p++;
2423	}
2424	}
2425	*result = stringArray;
2426	return cgiFormSuccess;
2427	}
2428
2429	cgiFormResultType cgiFormEntries(char ***result) {
2430	char **stringArray;
2431	cgiFormEntry e, pe;
2432	int i;
2433	int total = 0;
2434	e = cgiFormEntryFirst;
2435	while (e) {
2436	/* Don't count a field name more than once if
2437	multiple values happen to be present for it */
2438	pe = cgiFormEntryFirst;
2439	while (pe != e) {
2440	if (!strcmp(e->attr, pe->attr)) {
2441	goto skipSecondValue;
2442	}
2443	pe = pe->next;
2444	}
2445	total++;
2446	skipSecondValue:
2447	e = e->next;
2448	}
2449	stringArray = (char *) malloc(sizeof(char ) * (total + 1));
2450	if (!stringArray) {
2451	*result = 0;
2452	return cgiFormMemory;
2453	}
2454	/* initialize all entries to null; the last will stay that way */
2455	for (i=0; (i <= total); i++) {
2456	stringArray[i] = 0;
2457	}
2458	/* Now go get the entries */
2459	e = cgiFormEntryFirst;
2460	i = 0;
2461	while (e) {
2462	int space;
2463	/* Don't return a field name more than once if
2464	multiple values happen to be present for it */
2465	pe = cgiFormEntryFirst;
2466	while (pe != e) {
2467	if (!strcmp(e->attr, pe->attr)) {
2468	goto skipSecondValue2;
2469	}
2470	pe = pe->next;
2471	}
2472	space = (int) strlen(e->attr) + 1;
2473	stringArray[i] = (char *) malloc(space);
2474	if (stringArray[i] == 0) {
2475	/* Memory problems */
2476	cgiStringArrayFree(stringArray);
2477	*result = 0;
2478	return cgiFormMemory;
2479	}
2480	strcpy(stringArray[i], e->attr);
2481	i++;
2482	skipSecondValue2:
2483	e = e->next;
2484	}
2485	*result = stringArray;
2486	return cgiFormSuccess;
2487	}
2488
2489	#define TRYPUTC(ch) \
2490	{ \
2491	if (putc((ch), cgiOut) == EOF) { \
2492	return cgiFormIO; \
2493	} \
2494	}
2495
2496	cgiFormResultType cgiHtmlEscapeData(char *data, int len)
2497	{
2498	while (len--) {
2499	if (*data == '<') {
2500	TRYPUTC('&');
2501	TRYPUTC('l');
2502	TRYPUTC('t');
2503	TRYPUTC(';');
2504	} else if (*data == '&') {
2505	TRYPUTC('&');
2506	TRYPUTC('a');
2507	TRYPUTC('m');
2508	TRYPUTC('p');
2509	TRYPUTC(';');
2510	} else if (*data == '>') {
2511	TRYPUTC('&');
2512	TRYPUTC('g');
2513	TRYPUTC('t');
2514	TRYPUTC(';');
2515	} else {
2516	TRYPUTC(*data);
2517	}
2518	data++;
2519	}
2520	return cgiFormSuccess;
2521	}
2522
2523	cgiFormResultType cgiHtmlEscape(char *s)
2524	{
2525	return cgiHtmlEscapeData(s, (int) strlen(s));
2526	}
2527
2528	/* Output data with the " character HTML-escaped, and no
2529	other characters escaped. This is useful when outputting
2530	the contents of a tag attribute such as 'href' or 'src'.
2531	'data' is not null-terminated; 'len' is the number of
2532	bytes in 'data'. Returns cgiFormIO in the event
2533	of error, cgiFormSuccess otherwise. */
2534	cgiFormResultType cgiValueEscapeData(char *data, int len)
2535	{
2536	while (len--) {
2537	if (*data == '\"') {
2538	TRYPUTC('&');
2539	TRYPUTC('#');
2540	TRYPUTC('3');
2541	TRYPUTC('4');
2542	TRYPUTC(';');
2543	} else {
2544	TRYPUTC(*data);
2545	}
2546	data++;
2547	}
2548	return cgiFormSuccess;
2549	}
2550
2551	cgiFormResultType cgiValueEscape(char *s)
2552	{
2553	return cgiValueEscapeData(s, (int) strlen(s));
2554	}
2555
2556

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source: trunk/thirds/cgic206/cgic.c @ 383

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