4 * FastCGI application library: request-at-a-time
7 * Copyright (c) 1996 Open Market, Inc.
9 * See the file "LICENSE.TERMS" for information on usage and redistribution
10 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
14 static const char rcsid[] = "$Id: fcgiapp.c,v 1.11 1999/08/10 22:27:12 roberts Exp $";
17 #include "fcgi_config.h"
20 #define DLLAPI __declspec(dllexport)
25 #include <fcntl.h> /* for fcntl */
27 #include <memory.h> /* for memchr() */
32 #include <sys/types.h>
34 #ifdef HAVE_SYS_SOCKET_H
35 #include <sys/socket.h> /* for getpeername */
38 #ifdef HAVE_SYS_TIME_H
47 #include "fcgiappmisc.h"
53 * This is a workaround for one version of the HP C compiler
54 * (c89 on HP-UX 9.04, also Stratus FTX), which will dump core
55 * if given 'long double' for varargs.
57 #ifdef HAVE_VA_ARG_LONG_DOUBLE_BUG
58 #define LONG_DOUBLE double
60 #define LONG_DOUBLE long double
66 static int libInitialized = 0;
67 static int isFastCGI = -1;
68 static char *webServerAddressList = NULL;
69 static FCGX_Request reqData;
70 static FCGX_Request *reqDataPtr = &reqData;
72 static void *Malloc(size_t size)
74 void *result = malloc(size);
75 ASSERT(size == 0 || result != NULL);
79 static char *StringCopy(char *str)
81 int strLen = strlen(str);
82 char *newString = (char *)Malloc(strLen + 1);
83 memcpy(newString, str, strLen);
84 newString[strLen] = '\000';
90 *----------------------------------------------------------------------
94 * Reads a byte from the input stream and returns it.
97 * The byte, or EOF (-1) if the end of input has been reached.
99 *----------------------------------------------------------------------
101 int FCGX_GetChar(FCGX_Stream *stream)
103 if(stream->rdNext != stream->stop)
104 return *stream->rdNext++;
105 if(stream->isClosed || !stream->isReader)
107 stream->fillBuffProc(stream);
108 stream->stopUnget = stream->rdNext;
109 if(stream->rdNext != stream->stop)
110 return *stream->rdNext++;
111 ASSERT(stream->isClosed); /* bug in fillBufProc if not */
116 *----------------------------------------------------------------------
120 * Reads up to n consecutive bytes from the input stream
121 * into the character array str. Performs no interpretation
122 * of the input bytes.
125 * Number of bytes read. If result is smaller than n,
126 * the end of input has been reached.
128 *----------------------------------------------------------------------
130 int FCGX_GetStr(char *str, int n, FCGX_Stream *stream)
138 * Fast path: n bytes are already available
140 if(n <= (stream->stop - stream->rdNext)) {
141 memcpy(str, stream->rdNext, n);
146 * General case: stream is closed or buffer fill procedure
151 if(stream->rdNext != stream->stop) {
152 m = min(n - bytesMoved, stream->stop - stream->rdNext);
153 memcpy(str, stream->rdNext, m);
160 if(stream->isClosed || !stream->isReader)
162 stream->fillBuffProc(stream);
163 stream->stopUnget = stream->rdNext;
168 *----------------------------------------------------------------------
172 * Reads up to n-1 consecutive bytes from the input stream
173 * into the character array str. Stops before n-1 bytes
174 * have been read if '\n' or EOF is read. The terminating '\n'
175 * is copied to str. After copying the last byte into str,
176 * stores a '\0' terminator.
179 * NULL if EOF is the first thing read from the input stream,
182 *----------------------------------------------------------------------
184 char *FCGX_GetLine(char *str, int n, FCGX_Stream *stream)
190 c = FCGX_GetChar(stream);
207 *----------------------------------------------------------------------
211 * Pushes back the character c onto the input stream. One
212 * character of pushback is guaranteed once a character
213 * has been read. No pushback is possible for EOF.
216 * Returns c if the pushback succeeded, EOF if not.
218 *----------------------------------------------------------------------
220 int FCGX_UnGetChar(int c, FCGX_Stream *stream) {
224 || stream->rdNext == stream->stopUnget)
232 *----------------------------------------------------------------------
236 * Returns EOF if end-of-file has been detected while reading
237 * from stream; otherwise returns 0.
239 * Note that FCGX_HasSeenEOF(s) may return 0, yet an immediately
240 * following FCGX_GetChar(s) may return EOF. This function, like
241 * the standard C stdio function feof, does not provide the
242 * ability to peek ahead.
245 * EOF if end-of-file has been detected, 0 if not.
247 *----------------------------------------------------------------------
249 int FCGX_HasSeenEOF(FCGX_Stream *stream) {
250 return (stream->isClosed) ? EOF : 0;
254 *----------------------------------------------------------------------
258 * Writes a byte to the output stream.
261 * The byte, or EOF (-1) if an error occurred.
263 *----------------------------------------------------------------------
265 int FCGX_PutChar(int c, FCGX_Stream *stream)
267 if(stream->wrNext != stream->stop)
268 return (*stream->wrNext++ = c);
269 if(stream->isClosed || stream->isReader)
271 stream->emptyBuffProc(stream, FALSE);
272 if(stream->wrNext != stream->stop)
273 return (*stream->wrNext++ = c);
274 ASSERT(stream->isClosed); /* bug in emptyBuffProc if not */
279 *----------------------------------------------------------------------
283 * Writes n consecutive bytes from the character array str
284 * into the output stream. Performs no interpretation
285 * of the output bytes.
288 * Number of bytes written (n) for normal return,
289 * EOF (-1) if an error occurred.
291 *----------------------------------------------------------------------
293 int FCGX_PutStr(const char *str, int n, FCGX_Stream *stream)
298 * Fast path: room for n bytes in the buffer
300 if(n <= (stream->stop - stream->wrNext)) {
301 memcpy(stream->wrNext, str, n);
306 * General case: stream is closed or buffer empty procedure
311 if(stream->wrNext != stream->stop) {
312 m = min(n - bytesMoved, stream->stop - stream->wrNext);
313 memcpy(stream->wrNext, str, m);
320 if(stream->isClosed || stream->isReader)
322 stream->emptyBuffProc(stream, FALSE);
327 *----------------------------------------------------------------------
331 * Writes a character string to the output stream.
334 * number of bytes written for normal return,
335 * EOF (-1) if an error occurred.
337 *----------------------------------------------------------------------
339 int FCGX_PutS(const char *str, FCGX_Stream *stream)
341 return FCGX_PutStr(str, strlen(str), stream);
345 *----------------------------------------------------------------------
349 * Performs output formatting and writes the results
350 * to the output stream.
353 * number of bytes written for normal return,
354 * EOF (-1) if an error occurred.
356 *----------------------------------------------------------------------
358 int FCGX_FPrintF(FCGX_Stream *stream, const char *format, ...)
362 va_start(ap, format);
363 result = FCGX_VFPrintF(stream, format, ap);
369 *----------------------------------------------------------------------
373 * Performs output formatting and writes the results
374 * to the output stream.
377 * number of bytes written for normal return,
378 * EOF (-1) if an error occurred.
380 *----------------------------------------------------------------------
383 #define PRINTF_BUFFLEN 100
385 * More than sufficient space for all unmodified conversions
388 #define FMT_BUFFLEN 25
390 * Max size of a format specifier is 1 + 5 + 7 + 7 + 2 + 1 + slop
392 static void CopyAndAdvance(char **destPtr, char **srcPtr, int n);
394 int FCGX_VFPrintF(FCGX_Stream *stream, const char *format, va_list arg)
396 char *f, *fStop, *percentPtr, *p, *fmtBuffPtr, *buffPtr;
397 int op, performedOp, sizeModifier, buffCount, buffLen, specifierLength;
398 int fastPath, n, auxBuffLen, buffReqd, minWidth, precision, exp;
399 char *auxBuffPtr = NULL;
401 char fmtBuff[FMT_BUFFLEN];
402 char buff[PRINTF_BUFFLEN];
407 unsigned unsignedArg;
408 unsigned long uLongArg;
409 unsigned short uShortArg;
416 LONG_DOUBLE lDoubleArg;
420 fStop = f + strlen(f);
422 percentPtr = (char *)memchr(f, '%', fStop - f);
423 if(percentPtr == NULL) percentPtr = fStop;
424 if(percentPtr != f) {
425 if(FCGX_PutStr(f, percentPtr - f, stream) < 0) goto ErrorReturn;
426 streamCount += percentPtr - f;
428 if(f == fStop) break;
432 * The following loop always executes either once or twice.
437 * Fast path: Scan optimistically, hoping that no flags,
438 * minimum field width, or precision are specified.
439 * Use the preallocated buffer, which is large enough
440 * for all fast path cases. If the conversion specifier
441 * is really more complex, run the loop a second time
442 * using the slow path.
443 * Note that fast path execution of %s bypasses the buffer
444 * and %f is not attempted on the fast path due to
445 * its large buffering requirements.
447 op = *(percentPtr + 1);
453 op = *(percentPtr + 2);
454 fmtBuff[1] = sizeModifier;
467 buffLen = PRINTF_BUFFLEN;
470 * Slow path: Scan the conversion specifier and construct
471 * a new format string, compute an upper bound on the
472 * amount of buffering that sprintf will require,
473 * and allocate a larger buffer if necessary.
476 fmtBuffPtr = &fmtBuff[1];
480 n = strspn(p, "-0+ #");
481 if(n > 5) goto ErrorReturn;
482 CopyAndAdvance(&fmtBuffPtr, &p, n);
484 * Scan minimum field width
486 n = strspn(p, "0123456789");
489 minWidth = va_arg(arg, int);
490 if(abs(minWidth) > 999999) goto ErrorReturn;
492 * The following use of strlen rather than the
493 * value returned from sprintf is because SUNOS4
494 * returns a char * instead of an int count.
496 sprintf(fmtBuffPtr, "%d", minWidth);
497 fmtBuffPtr += strlen(fmtBuffPtr);
503 minWidth = strtol(p, NULL, 10);
504 CopyAndAdvance(&fmtBuffPtr, &p, n);
512 CopyAndAdvance(&fmtBuffPtr, &p, 1);
513 n = strspn(p, "0123456789");
516 precision = va_arg(arg, int);
517 if(precision < 0) precision = 0;
518 if(precision > 999999) goto ErrorReturn;
520 * The following use of strlen rather than the
521 * value returned from sprintf is because SUNOS4
522 * returns a char * instead of an int count.
524 sprintf(fmtBuffPtr, "%d", precision);
525 fmtBuffPtr += strlen(fmtBuffPtr);
531 precision = strtol(p, NULL, 10);
532 CopyAndAdvance(&fmtBuffPtr, &p, n);
540 * Scan size modifier and conversion operation
547 CopyAndAdvance(&fmtBuffPtr, &p, 1);
554 CopyAndAdvance(&fmtBuffPtr, &p, 1);
555 ASSERT(fmtBuffPtr - fmtBuff < FMT_BUFFLEN);
557 specifierLength = p - percentPtr;
559 * Bound the required buffer size. For s and f
560 * conversions this requires examining the argument.
571 buffReqd = max(precision, 46);
574 charPtrArg = va_arg(arg, char *);
575 if (!charPtrArg) charPtrArg = "(null)";
576 if(precision == -1) {
577 buffReqd = strlen(charPtrArg);
579 p = (char *)memchr(charPtrArg, '\0', precision);
581 (p == NULL) ? precision : p - charPtrArg;
585 switch(sizeModifier) {
587 doubleArg = va_arg(arg, double);
588 frexp(doubleArg, &exp);
591 lDoubleArg = va_arg(arg, LONG_DOUBLE);
592 frexp(lDoubleArg, &exp);
597 if(precision == -1) precision = 6;
598 buffReqd = precision + 3 + ((exp > 0) ? exp/3 : 0);
604 if(precision == -1) precision = 6;
605 buffReqd = precision + 8;
613 buffReqd = max(buffReqd + 10, minWidth);
615 * Allocate the buffer
617 if(buffReqd <= PRINTF_BUFFLEN) {
619 buffLen = PRINTF_BUFFLEN;
621 if(auxBuffPtr == NULL || buffReqd > auxBuffLen) {
622 if(auxBuffPtr != NULL) free(auxBuffPtr);
623 auxBuffPtr = (char *)Malloc(buffReqd);
624 auxBuffLen = buffReqd;
625 if(auxBuffPtr == NULL) goto ErrorReturn;
627 buffPtr = auxBuffPtr;
628 buffLen = auxBuffLen;
632 * This giant switch statement requires the following variables
633 * to be set up: op, sizeModifier, arg, buffPtr, fmtBuff.
634 * When fastPath == FALSE and op == 's' or 'f', the argument
635 * has been read into charPtrArg, doubleArg, or lDoubleArg.
636 * The statement produces the boolean performedOp, TRUE iff
637 * the op/sizeModifier were executed and argument consumed;
638 * if performedOp, the characters written into buffPtr[]
639 * and the character count buffCount (== EOF meaning error).
641 * The switch cases are arranged in the same order as in the
642 * description of fprintf in section 15.11 of Harbison and Steele.
648 switch(sizeModifier) {
650 intArg = va_arg(arg, int);
651 sprintf(buffPtr, fmtBuff, intArg);
652 buffCount = strlen(buffPtr);
655 longArg = va_arg(arg, long);
656 sprintf(buffPtr, fmtBuff, longArg);
657 buffCount = strlen(buffPtr);
660 shortArg = va_arg(arg, short);
661 sprintf(buffPtr, fmtBuff, shortArg);
662 buffCount = strlen(buffPtr);
672 switch(sizeModifier) {
674 unsignedArg = va_arg(arg, unsigned);
675 sprintf(buffPtr, fmtBuff, unsignedArg);
676 buffCount = strlen(buffPtr);
679 uLongArg = va_arg(arg, unsigned long);
680 sprintf(buffPtr, fmtBuff, uLongArg);
681 buffCount = strlen(buffPtr);
684 uShortArg = va_arg(arg, unsigned short);
685 sprintf(buffPtr, fmtBuff, uShortArg);
686 buffCount = strlen(buffPtr);
693 switch(sizeModifier) {
695 intArg = va_arg(arg, int);
696 sprintf(buffPtr, fmtBuff, intArg);
697 buffCount = strlen(buffPtr);
701 * XXX: Allowed by ISO C Amendment 1, but
702 * many platforms don't yet support wint_t
710 switch(sizeModifier) {
713 buffPtr = va_arg(arg, char *);
714 buffCount = strlen(buffPtr);
715 buffLen = buffCount + 1;
717 sprintf(buffPtr, fmtBuff, charPtrArg);
718 buffCount = strlen(buffPtr);
723 * XXX: Don't know how to convert a sequence
724 * of wide characters into a byte stream, or
725 * even how to predict the buffering required.
733 if(sizeModifier != ' ') goto ErrorReturn;
734 voidPtrArg = va_arg(arg, void *);
735 sprintf(buffPtr, fmtBuff, voidPtrArg);
736 buffCount = strlen(buffPtr);
739 switch(sizeModifier) {
741 intPtrArg = va_arg(arg, int *);
742 *intPtrArg = streamCount;
745 longPtrArg = va_arg(arg, long *);
746 *longPtrArg = streamCount;
749 shortPtrArg = va_arg(arg, short *);
750 *shortPtrArg = streamCount;
762 switch(sizeModifier) {
764 sprintf(buffPtr, fmtBuff, doubleArg);
765 buffCount = strlen(buffPtr);
768 sprintf(buffPtr, fmtBuff, lDoubleArg);
769 buffCount = strlen(buffPtr);
779 switch(sizeModifier) {
781 doubleArg = va_arg(arg, double);
782 sprintf(buffPtr, fmtBuff, doubleArg);
783 buffCount = strlen(buffPtr);
786 lDoubleArg = va_arg(arg, LONG_DOUBLE);
787 sprintf(buffPtr, fmtBuff, lDoubleArg);
788 buffCount = strlen(buffPtr);
795 if(sizeModifier != ' ')
806 if(performedOp) break;
807 if(!fastPath) goto ErrorReturn;
810 ASSERT(buffCount < buffLen);
812 if(FCGX_PutStr(buffPtr, buffCount, stream) < 0)
814 streamCount += buffCount;
815 } else if(buffCount < 0) {
818 f += specifierLength;
819 } /* while(f != fStop) */
824 if(auxBuffPtr != NULL) free(auxBuffPtr);
829 * Copy n characters from *srcPtr to *destPtr, then increment
830 * both *srcPtr and *destPtr by n.
832 static void CopyAndAdvance(char **destPtr, char **srcPtr, int n)
834 char *dest = *destPtr;
837 for (i = 0; i < n; i++)
844 *----------------------------------------------------------------------
848 * Flushes any buffered output.
850 * Server-push is a legitimate application of FCGX_FFlush.
851 * Otherwise, FCGX_FFlush is not very useful, since FCGX_Accept
852 * does it implicitly. FCGX_FFlush may reduce performance
853 * by increasing the total number of operating system calls
854 * the application makes.
857 * EOF (-1) if an error occurred.
859 *----------------------------------------------------------------------
861 int FCGX_FFlush(FCGX_Stream *stream)
863 if(stream->isClosed || stream->isReader)
865 stream->emptyBuffProc(stream, FALSE);
866 return (stream->isClosed) ? -1 : 0;
870 *----------------------------------------------------------------------
874 * Performs FCGX_FFlush and closes the stream.
876 * This is not a very useful operation, since FCGX_Accept
877 * does it implicitly. Closing the out stream before the
878 * err stream results in an extra write if there's nothing
879 * in the err stream, and therefore reduces performance.
882 * EOF (-1) if an error occurred.
884 *----------------------------------------------------------------------
886 int FCGX_FClose(FCGX_Stream *stream)
888 if(!stream->wasFCloseCalled) {
889 if(!stream->isReader) {
890 stream->emptyBuffProc(stream, TRUE);
892 stream->wasFCloseCalled = TRUE;
893 stream->isClosed = TRUE;
894 if(stream->isReader) {
895 stream->wrNext = stream->stop = stream->rdNext;
897 stream->rdNext = stream->stop = stream->wrNext;
900 return (stream->FCGI_errno == 0) ? 0 : EOF;
904 *----------------------------------------------------------------------
908 * An error has occurred; save the error code in the stream
909 * for diagnostic purposes and set the stream state so that
910 * reads return EOF and writes have no effect.
912 *----------------------------------------------------------------------
914 static void SetError(FCGX_Stream *stream, int FCGI_errno)
917 * Preserve only the first error.
919 if(stream->FCGI_errno == 0) {
920 stream->FCGI_errno = FCGI_errno;
921 stream->isClosed = TRUE;
926 *----------------------------------------------------------------------
930 * Return the stream error code. 0 means no error, > 0
931 * is an errno(2) error, < 0 is an FCGX_errno error.
933 *----------------------------------------------------------------------
935 int FCGX_GetError(FCGX_Stream *stream) {
936 return stream->FCGI_errno;
940 *----------------------------------------------------------------------
944 * Clear the stream error code and end-of-file indication.
946 *----------------------------------------------------------------------
948 void FCGX_ClearError(FCGX_Stream *stream) {
949 stream->FCGI_errno = 0;
951 * stream->isClosed = FALSE;
952 * XXX: should clear isClosed but work is needed to make it safe
953 * to do so. For example, if an application calls FClose, gets
954 * an I/O error on the write, calls ClearError and retries
955 * the FClose, FClose (really EmptyBuffProc) will write a second
956 * EOF record. If an application calls PutChar instead of FClose
957 * after the ClearError, the application will write more data.
958 * The stream's state must discriminate between various states
959 * of the stream that are now all lumped under isClosed.
964 *======================================================================
966 *======================================================================
970 * A vector of pointers representing the parameters received
971 * by a FastCGI application server, with the vector's length
972 * and last valid element so adding new parameters is efficient.
975 typedef struct Params {
976 FCGX_ParamArray vec; /* vector of strings */
977 int length; /* number of string vec can hold */
978 char **cur; /* current item in vec; *cur == NULL */
980 typedef Params *ParamsPtr;
983 *----------------------------------------------------------------------
987 * Creates a new Params structure.
990 * Pointer to the new structure.
992 *----------------------------------------------------------------------
994 static ParamsPtr NewParams(int length)
997 result = (Params *)Malloc(sizeof(Params));
998 result->vec = (char **)Malloc(length * sizeof(char *));
999 result->length = length;
1000 result->cur = result->vec;
1001 *result->cur = NULL;
1006 *----------------------------------------------------------------------
1010 * Frees a Params structure and all the parameters it contains.
1013 * env becomes invalid.
1015 *----------------------------------------------------------------------
1017 static void FreeParams(ParamsPtr *paramsPtrPtr)
1019 ParamsPtr paramsPtr = *paramsPtrPtr;
1021 if(paramsPtr == NULL) {
1024 for (p = paramsPtr->vec; p < paramsPtr->cur; p++) {
1027 free(paramsPtr->vec);
1029 *paramsPtrPtr = NULL;
1033 *----------------------------------------------------------------------
1037 * Add a name/value pair to a Params structure.
1043 * Parameters structure updated.
1045 *----------------------------------------------------------------------
1047 static void PutParam(ParamsPtr paramsPtr, char *nameValue)
1051 *paramsPtr->cur++ = nameValue;
1052 size = paramsPtr->cur - paramsPtr->vec;
1053 if(size >= paramsPtr->length) {
1054 paramsPtr->length *= 2;
1055 paramsPtr->vec = (FCGX_ParamArray)realloc(paramsPtr->vec, paramsPtr->length * sizeof(char *));
1056 paramsPtr->cur = paramsPtr->vec + size;
1058 *paramsPtr->cur = NULL;
1062 *----------------------------------------------------------------------
1064 * FCGX_GetParam -- obtain value of FCGI parameter in environment
1068 * Value bound to name, NULL if name not present in the
1069 * environment envp. Caller must not mutate the result
1070 * or retain it past the end of this request.
1072 *----------------------------------------------------------------------
1074 char *FCGX_GetParam(const char *name, FCGX_ParamArray envp)
1079 if(len == 0) return NULL;
1080 for (p = envp; *p != NULL; p++) {
1081 if((strncmp(name, *p, len) == 0) && ((*p)[len] == '=')) {
1089 *----------------------------------------------------------------------
1091 * Start of FastCGI-specific code
1093 *----------------------------------------------------------------------
1097 *----------------------------------------------------------------------
1101 * Reads FastCGI name-value pairs from stream until EOF. Converts
1102 * each pair to name=value format and adds it to Params structure.
1104 *----------------------------------------------------------------------
1106 static int ReadParams(Params *paramsPtr, FCGX_Stream *stream)
1108 int nameLen, valueLen;
1109 unsigned char lenBuff[3];
1112 while((nameLen = FCGX_GetChar(stream)) != EOF) {
1114 * Read name length (one or four bytes) and value length
1115 * (one or four bytes) from stream.
1117 if((nameLen & 0x80) != 0) {
1118 if(FCGX_GetStr((char *) &lenBuff[0], 3, stream) != 3) {
1119 SetError(stream, FCGX_PARAMS_ERROR);
1122 nameLen = ((nameLen & 0x7f) << 24) + (lenBuff[0] << 16)
1123 + (lenBuff[1] << 8) + lenBuff[2];
1125 if((valueLen = FCGX_GetChar(stream)) == EOF) {
1126 SetError(stream, FCGX_PARAMS_ERROR);
1129 if((valueLen & 0x80) != 0) {
1130 if(FCGX_GetStr((char *) &lenBuff[0], 3, stream) != 3) {
1131 SetError(stream, FCGX_PARAMS_ERROR);
1134 valueLen = ((valueLen & 0x7f) << 24) + (lenBuff[0] << 16)
1135 + (lenBuff[1] << 8) + lenBuff[2];
1138 * nameLen and valueLen are now valid; read the name and value
1139 * from stream and construct a standard environment entry.
1141 nameValue = (char *)Malloc(nameLen + valueLen + 2);
1142 if(FCGX_GetStr(nameValue, nameLen, stream) != nameLen) {
1143 SetError(stream, FCGX_PARAMS_ERROR);
1147 *(nameValue + nameLen) = '=';
1148 if(FCGX_GetStr(nameValue + nameLen + 1, valueLen, stream)
1150 SetError(stream, FCGX_PARAMS_ERROR);
1154 *(nameValue + nameLen + valueLen + 1) = '\0';
1155 PutParam(paramsPtr, nameValue);
1161 *----------------------------------------------------------------------
1165 * Constructs an FCGI_Header struct.
1167 *----------------------------------------------------------------------
1169 static FCGI_Header MakeHeader(
1176 ASSERT(contentLength >= 0 && contentLength <= FCGI_MAX_LENGTH);
1177 ASSERT(paddingLength >= 0 && paddingLength <= 0xff);
1178 header.version = FCGI_VERSION_1;
1180 header.requestIdB1 = (requestId >> 8) & 0xff;
1181 header.requestIdB0 = (requestId ) & 0xff;
1182 header.contentLengthB1 = (contentLength >> 8) & 0xff;
1183 header.contentLengthB0 = (contentLength ) & 0xff;
1184 header.paddingLength = paddingLength;
1185 header.reserved = 0;
1190 *----------------------------------------------------------------------
1192 * MakeEndRequestBody --
1194 * Constructs an FCGI_EndRequestBody struct.
1196 *----------------------------------------------------------------------
1198 static FCGI_EndRequestBody MakeEndRequestBody(
1202 FCGI_EndRequestBody body;
1203 body.appStatusB3 = (appStatus >> 24) & 0xff;
1204 body.appStatusB2 = (appStatus >> 16) & 0xff;
1205 body.appStatusB1 = (appStatus >> 8) & 0xff;
1206 body.appStatusB0 = (appStatus ) & 0xff;
1207 body.protocolStatus = protocolStatus;
1208 memset(body.reserved, 0, sizeof(body.reserved));
1213 *----------------------------------------------------------------------
1215 * MakeUnknownTypeBody --
1217 * Constructs an FCGI_MakeUnknownTypeBody struct.
1219 *----------------------------------------------------------------------
1221 static FCGI_UnknownTypeBody MakeUnknownTypeBody(
1224 FCGI_UnknownTypeBody body;
1226 memset(body.reserved, 0, sizeof(body.reserved));
1231 *----------------------------------------------------------------------
1235 * Returns the smallest integer greater than or equal to n
1236 * that's a multiple of 8.
1238 *----------------------------------------------------------------------
1240 static int AlignInt8(unsigned n) {
1241 return (n + 7) & (UINT_MAX - 7);
1245 *----------------------------------------------------------------------
1249 * Returns the smallest pointer greater than or equal to p
1250 * that's a multiple of 8.
1252 *----------------------------------------------------------------------
1254 static unsigned char *AlignPtr8(unsigned char *p) {
1255 unsigned long u = (unsigned long) p;
1256 u = ((u + 7) & (ULONG_MAX - 7)) - u;
1262 * State associated with a stream
1264 typedef struct FCGX_Stream_Data {
1265 unsigned char *buff; /* buffer after alignment */
1266 int bufflen; /* number of bytes buff can store */
1267 unsigned char *mBuff; /* buffer as returned by Malloc */
1268 unsigned char *buffStop; /* reader: last valid byte + 1 of entire buffer.
1269 * stop generally differs from buffStop for
1270 * readers because of record structure.
1271 * writer: buff + bufflen */
1272 int type; /* reader: FCGI_PARAMS or FCGI_STDIN
1273 * writer: FCGI_STDOUT or FCGI_STDERR */
1274 int eorStop; /* reader: stop stream at end-of-record */
1275 int skip; /* reader: don't deliver content bytes */
1276 int contentLen; /* reader: bytes of unread content */
1277 int paddingLen; /* reader: bytes of unread padding */
1278 int isAnythingWritten; /* writer: data has been written to ipcFd */
1279 int rawWrite; /* writer: write data without stream headers */
1280 FCGX_Request *reqDataPtr; /* request data not specific to one stream */
1284 *----------------------------------------------------------------------
1286 * WriteCloseRecords --
1288 * Writes an EOF record for the stream content if necessary.
1289 * If this is the last writer to close, writes an FCGI_END_REQUEST
1292 *----------------------------------------------------------------------
1294 static void WriteCloseRecords(struct FCGX_Stream *stream)
1296 FCGX_Stream_Data *data = (FCGX_Stream_Data *)stream->data;
1298 * Enter rawWrite mode so final records won't be encapsulated as
1301 data->rawWrite = TRUE;
1303 * Generate EOF for stream content if needed.
1305 if(!(data->type == FCGI_STDERR
1306 && stream->wrNext == data->buff
1307 && !data->isAnythingWritten)) {
1309 header = MakeHeader(data->type, data->reqDataPtr->requestId, 0, 0);
1310 FCGX_PutStr((char *) &header, sizeof(header), stream);
1313 * Generate FCGI_END_REQUEST record if needed.
1315 if(data->reqDataPtr->nWriters == 1) {
1316 FCGI_EndRequestRecord endRequestRecord;
1317 endRequestRecord.header = MakeHeader(FCGI_END_REQUEST,
1318 data->reqDataPtr->requestId,
1319 sizeof(endRequestRecord.body), 0);
1320 endRequestRecord.body = MakeEndRequestBody(
1321 data->reqDataPtr->appStatus, FCGI_REQUEST_COMPLETE);
1322 FCGX_PutStr((char *) &endRequestRecord,
1323 sizeof(endRequestRecord), stream);
1325 data->reqDataPtr->nWriters--;
1330 static int write_it_all(int fd, char *buf, int len)
1335 wrote = OS_Write(fd, buf, len);
1345 *----------------------------------------------------------------------
1349 * Encapsulates any buffered stream content in a FastCGI
1350 * record. Writes the data, making the buffer empty.
1352 *----------------------------------------------------------------------
1354 static void EmptyBuffProc(struct FCGX_Stream *stream, int doClose)
1356 FCGX_Stream_Data *data = (FCGX_Stream_Data *)stream->data;
1359 * If the buffer contains stream data, fill in the header.
1360 * Pad the record to a multiple of 8 bytes in length. Padding
1361 * can't overflow the buffer because the buffer is a multiple
1362 * of 8 bytes in length. If the buffer contains no stream
1363 * data, reclaim the space reserved for the header.
1365 if(!data->rawWrite) {
1366 cLen = stream->wrNext - data->buff - sizeof(FCGI_Header);
1368 eLen = AlignInt8(cLen);
1370 * Giving the padding a well-defined value keeps Purify happy.
1372 memset(stream->wrNext, 0, eLen - cLen);
1373 stream->wrNext += eLen - cLen;
1374 *((FCGI_Header *) data->buff)
1375 = MakeHeader(data->type,
1376 data->reqDataPtr->requestId, cLen, eLen - cLen);
1378 stream->wrNext = data->buff;
1382 WriteCloseRecords(stream);
1384 if (stream->wrNext != data->buff) {
1385 data->isAnythingWritten = TRUE;
1386 if (write_it_all(data->reqDataPtr->ipcFd, (char *)data->buff, stream->wrNext - data->buff) < 0) {
1387 SetError(stream, OS_Errno);
1390 stream->wrNext = data->buff;
1393 * The buffer is empty.
1395 if(!data->rawWrite) {
1396 stream->wrNext += sizeof(FCGI_Header);
1401 * Return codes for Process* functions
1403 #define STREAM_RECORD 0
1405 #define BEGIN_RECORD 2
1406 #define MGMT_RECORD 3
1409 *----------------------------------------------------------------------
1411 * ProcessManagementRecord --
1413 * Reads and responds to a management record. The only type of
1414 * management record this library understands is FCGI_GET_VALUES.
1415 * The only variables that this library's FCGI_GET_VALUES
1416 * understands are FCGI_MAX_CONNS, FCGI_MAX_REQS, and FCGI_MPXS_CONNS.
1417 * Ignore other FCGI_GET_VALUES variables; respond to other
1418 * management records with a FCGI_UNKNOWN_TYPE record.
1420 *----------------------------------------------------------------------
1422 static int ProcessManagementRecord(int type, FCGX_Stream *stream)
1424 FCGX_Stream_Data *data = (FCGX_Stream_Data *)stream->data;
1425 ParamsPtr paramsPtr = NewParams(3);
1427 char response[64]; /* 64 = 8 + 3*(1+1+14+1)* + padding */
1428 char *responseP = &response[FCGI_HEADER_LEN];
1431 if(type == FCGI_GET_VALUES) {
1432 ReadParams(paramsPtr, stream);
1433 if((FCGX_GetError(stream) != 0) || (data->contentLen != 0)) {
1434 FreeParams(¶msPtr);
1435 return FCGX_PROTOCOL_ERROR;
1437 for (pPtr = paramsPtr->vec; pPtr < paramsPtr->cur; pPtr++) {
1439 *(strchr(name, '=')) = '\0';
1440 if(strcmp(name, FCGI_MAX_CONNS) == 0) {
1442 } else if(strcmp(name, FCGI_MAX_REQS) == 0) {
1444 } else if(strcmp(name, FCGI_MPXS_CONNS) == 0) {
1451 sprintf(responseP, "%c%c%s%c", len, 1, name, value);
1452 responseP += len + 3;
1455 len = responseP - &response[FCGI_HEADER_LEN];
1456 paddedLen = AlignInt8(len);
1457 *((FCGI_Header *) response)
1458 = MakeHeader(FCGI_GET_VALUES_RESULT, FCGI_NULL_REQUEST_ID,
1459 len, paddedLen - len);
1460 FreeParams(¶msPtr);
1462 paddedLen = len = sizeof(FCGI_UnknownTypeBody);
1463 ((FCGI_UnknownTypeRecord *) response)->header
1464 = MakeHeader(FCGI_UNKNOWN_TYPE, FCGI_NULL_REQUEST_ID,
1466 ((FCGI_UnknownTypeRecord *) response)->body
1467 = MakeUnknownTypeBody(type);
1469 if (write_it_all(data->reqDataPtr->ipcFd, response, FCGI_HEADER_LEN + paddedLen) < 0) {
1470 SetError(stream, OS_Errno);
1478 *----------------------------------------------------------------------
1480 * ProcessBeginRecord --
1482 * Reads an FCGI_BEGIN_REQUEST record.
1485 * BEGIN_RECORD for normal return. FCGX_PROTOCOL_ERROR for
1486 * protocol error. SKIP for attempt to multiplex
1487 * connection. -1 for error from write (errno in stream).
1490 * In case of BEGIN_RECORD return, stores requestId, role,
1491 * keepConnection values, and sets isBeginProcessed = TRUE.
1493 *----------------------------------------------------------------------
1495 static int ProcessBeginRecord(int requestId, FCGX_Stream *stream)
1497 FCGX_Stream_Data *data = (FCGX_Stream_Data *)stream->data;
1498 FCGI_BeginRequestBody body;
1499 if(requestId == 0 || data->contentLen != sizeof(body)) {
1500 return FCGX_PROTOCOL_ERROR;
1502 if(data->reqDataPtr->isBeginProcessed) {
1504 * The Web server is multiplexing the connection. This library
1505 * doesn't know how to handle multiplexing, so respond with
1506 * FCGI_END_REQUEST{protocolStatus = FCGI_CANT_MPX_CONN}
1508 FCGI_EndRequestRecord endRequestRecord;
1509 endRequestRecord.header = MakeHeader(FCGI_END_REQUEST,
1510 requestId, sizeof(endRequestRecord.body), 0);
1511 endRequestRecord.body
1512 = MakeEndRequestBody(0, FCGI_CANT_MPX_CONN);
1513 if (write_it_all(data->reqDataPtr->ipcFd, (char *)&endRequestRecord, sizeof(endRequestRecord)) < 0) {
1514 SetError(stream, OS_Errno);
1521 * Accept this new request. Read the record body.
1523 data->reqDataPtr->requestId = requestId;
1524 if(FCGX_GetStr((char *) &body, sizeof(body), stream)
1526 return FCGX_PROTOCOL_ERROR;
1528 data->reqDataPtr->keepConnection = (body.flags & FCGI_KEEP_CONN);
1529 data->reqDataPtr->role = (body.roleB1 << 8) + body.roleB0;
1530 data->reqDataPtr->isBeginProcessed = TRUE;
1531 return BEGIN_RECORD;
1535 *----------------------------------------------------------------------
1539 * Interprets FCGI_Header. Processes FCGI_BEGIN_REQUEST and
1540 * management records here; extracts information from stream
1541 * records (FCGI_PARAMS, FCGI_STDIN) into stream.
1544 * >= 0 for a normal return, < 0 for error
1547 * XXX: Many (more than there used to be).
1548 * If !stream->isRequestIdSet, ProcessHeader initializes
1549 * stream->requestId from header and sets stream->isRequestIdSet
1550 * to TRUE. ProcessHeader also sets stream->contentLen to header's
1551 * contentLength, and sets stream->paddingLen to the header's
1554 *----------------------------------------------------------------------
1556 static int ProcessHeader(FCGI_Header header, FCGX_Stream *stream)
1558 FCGX_Stream_Data *data = (FCGX_Stream_Data *)stream->data;
1560 if(header.version != FCGI_VERSION_1) {
1561 return FCGX_UNSUPPORTED_VERSION;
1563 requestId = (header.requestIdB1 << 8)
1564 + header.requestIdB0;
1565 data->contentLen = (header.contentLengthB1 << 8)
1566 + header.contentLengthB0;
1567 data->paddingLen = header.paddingLength;
1568 if(header.type == FCGI_BEGIN_REQUEST) {
1569 return ProcessBeginRecord(requestId, stream);
1571 if(requestId == FCGI_NULL_REQUEST_ID) {
1572 return ProcessManagementRecord(header.type, stream);
1574 if(requestId != data->reqDataPtr->requestId) {
1577 if(header.type != data->type) {
1578 return FCGX_PROTOCOL_ERROR;
1580 return STREAM_RECORD;
1584 *----------------------------------------------------------------------
1588 * Reads bytes from the ipcFd, supplies bytes to a stream client.
1590 *----------------------------------------------------------------------
1592 static void FillBuffProc(FCGX_Stream *stream)
1594 FCGX_Stream_Data *data = (FCGX_Stream_Data *)stream->data;
1601 * If data->buff is empty, do a read.
1603 if(stream->rdNext == data->buffStop) {
1604 count = OS_Read(data->reqDataPtr->ipcFd, (char *)data->buff,
1607 SetError(stream, (count == 0 ? FCGX_PROTOCOL_ERROR : OS_Errno));
1610 stream->rdNext = data->buff;
1611 data->buffStop = data->buff + count;
1614 * Now data->buff is not empty. If the current record contains
1615 * more content bytes, deliver all that are present in data->buff.
1617 if(data->contentLen > 0) {
1618 count = min(data->contentLen, data->buffStop - stream->rdNext);
1619 data->contentLen -= count;
1621 stream->wrNext = stream->stop = stream->rdNext + count;
1624 stream->rdNext += count;
1625 if(data->contentLen > 0) {
1633 * If the current record (whose content has been fully consumed by
1634 * the client) was padded, skip over the padding bytes.
1636 if(data->paddingLen > 0) {
1637 count = min(data->paddingLen, data->buffStop - stream->rdNext);
1638 data->paddingLen -= count;
1639 stream->rdNext += count;
1640 if(data->paddingLen > 0) {
1645 * All done with the current record, including the padding.
1646 * If we're in a recursive call from ProcessHeader, deliver EOF.
1649 stream->stop = stream->rdNext;
1650 stream->isClosed = TRUE;
1654 * Fill header with bytes from the input buffer.
1656 count = min((int)sizeof(header) - headerLen,
1657 data->buffStop - stream->rdNext);
1658 memcpy(((char *)(&header)) + headerLen, stream->rdNext, count);
1660 stream->rdNext += count;
1661 if(headerLen < sizeof(header)) {
1666 * Interpret header. eorStop prevents ProcessHeader from reading
1667 * past the end-of-record when using stream to read content.
1669 data->eorStop = TRUE;
1670 stream->stop = stream->rdNext;
1671 status = ProcessHeader(header, stream);
1672 data->eorStop = FALSE;
1673 stream->isClosed = FALSE;
1677 * If this stream record header marked the end of stream
1678 * data deliver EOF to the stream client, otherwise loop
1681 * XXX: If this is final stream and
1682 * stream->rdNext != data->buffStop, buffered
1683 * data is next request (server pipelining)?
1685 if(data->contentLen == 0) {
1686 stream->wrNext = stream->stop = stream->rdNext;
1687 stream->isClosed = TRUE;
1696 * If this header marked the beginning of a new
1697 * request, return role information to caller.
1705 SetError(stream, status);
1713 *----------------------------------------------------------------------
1717 * Creates a stream to read or write from an open ipcFd.
1718 * The stream performs reads/writes of up to bufflen bytes.
1720 *----------------------------------------------------------------------
1722 static FCGX_Stream *NewStream(
1723 FCGX_Request *reqDataPtr, int bufflen, int isReader, int streamType)
1726 * XXX: It would be a lot cleaner to have a NewStream that only
1727 * knows about the type FCGX_Stream, with all other
1728 * necessary data passed in. It appears that not just
1729 * data and the two procs are needed for initializing stream,
1730 * but also data->buff and data->buffStop. This has implications
1731 * for procs that want to swap buffers, too.
1733 FCGX_Stream *stream = (FCGX_Stream *)Malloc(sizeof(FCGX_Stream));
1734 FCGX_Stream_Data *data = (FCGX_Stream_Data *)Malloc(sizeof(FCGX_Stream_Data));
1735 data->reqDataPtr = reqDataPtr;
1736 bufflen = AlignInt8(min(max(bufflen, 32), FCGI_MAX_LENGTH + 1));
1737 data->bufflen = bufflen;
1738 data->mBuff = (unsigned char *)Malloc(bufflen);
1739 data->buff = AlignPtr8(data->mBuff);
1740 if(data->buff != data->mBuff) {
1744 data->buffStop = data->buff;
1746 data->buffStop = data->buff + data->bufflen;
1748 data->type = streamType;
1749 data->eorStop = FALSE;
1751 data->contentLen = 0;
1752 data->paddingLen = 0;
1753 data->isAnythingWritten = FALSE;
1754 data->rawWrite = FALSE;
1756 stream->data = data;
1757 stream->isReader = isReader;
1758 stream->isClosed = FALSE;
1759 stream->wasFCloseCalled = FALSE;
1760 stream->FCGI_errno = 0;
1762 stream->fillBuffProc = FillBuffProc;
1763 stream->emptyBuffProc = NULL;
1764 stream->rdNext = data->buff;
1765 stream->stop = stream->rdNext;
1766 stream->stopUnget = data->buff;
1767 stream->wrNext = stream->stop;
1769 stream->fillBuffProc = NULL;
1770 stream->emptyBuffProc = EmptyBuffProc;
1771 stream->wrNext = data->buff + sizeof(FCGI_Header);
1772 stream->stop = data->buffStop;
1773 stream->stopUnget = NULL;
1774 stream->rdNext = stream->stop;
1780 *----------------------------------------------------------------------
1784 * Frees all storage allocated when *streamPtr was created,
1785 * and nulls out *streamPtr.
1787 *----------------------------------------------------------------------
1789 void FreeStream(FCGX_Stream **streamPtr)
1791 FCGX_Stream *stream = *streamPtr;
1792 FCGX_Stream_Data *data;
1793 if(stream == NULL) {
1796 data = (FCGX_Stream_Data *)stream->data;
1797 data->reqDataPtr = NULL;
1805 *----------------------------------------------------------------------
1809 * Re-initializes the stream to read data of the specified type.
1811 *----------------------------------------------------------------------
1813 static FCGX_Stream *SetReaderType(FCGX_Stream *stream, int streamType)
1815 FCGX_Stream_Data *data = (FCGX_Stream_Data *)stream->data;
1816 ASSERT(stream->isReader);
1817 data->type = streamType;
1818 data->eorStop = FALSE;
1820 data->contentLen = 0;
1821 data->paddingLen = 0;
1822 stream->wrNext = stream->stop = stream->rdNext;
1823 stream->isClosed = FALSE;
1828 *----------------------------------------------------------------------
1832 * Creates a stream to read streamType records for the given
1833 * request. The stream performs OS reads of up to bufflen bytes.
1835 *----------------------------------------------------------------------
1837 static FCGX_Stream *NewReader(FCGX_Request *reqDataPtr, int bufflen, int streamType)
1839 return NewStream(reqDataPtr, bufflen, TRUE, streamType);
1844 *----------------------------------------------------------------------
1848 * Creates a stream to write streamType FastCGI records, using
1849 * the ipcFd and RequestId contained in *reqDataPtr.
1850 * The stream performs OS writes of up to bufflen bytes.
1852 *----------------------------------------------------------------------
1854 static FCGX_Stream *NewWriter(FCGX_Request *reqDataPtr, int bufflen, int streamType)
1856 return NewStream(reqDataPtr, bufflen, FALSE, streamType);
1861 *----------------------------------------------------------------------
1865 * Creates a stream to write streamType FastCGI records, using
1866 * the given ipcFd and request Id. This function is provided
1867 * for use by cgi-fcgi. In order to be defensive against misuse,
1868 * this function leaks a little storage; cgi-fcgi doesn't care.
1870 *----------------------------------------------------------------------
1872 FCGX_Stream *CreateWriter(
1878 FCGX_Request *reqDataPtr = (FCGX_Request *)Malloc(sizeof(FCGX_Request));
1879 reqDataPtr->ipcFd = ipcFd;
1880 reqDataPtr->requestId = requestId;
1882 * Suppress writing an FCGI_END_REQUEST record.
1884 reqDataPtr->nWriters = 2;
1885 return NewWriter(reqDataPtr, bufflen, streamType);
1889 *======================================================================
1891 *======================================================================
1895 *----------------------------------------------------------------------
1899 * This routine determines if the process is running as a CGI or
1900 * FastCGI process. The distinction is made by determining whether
1901 * FCGI_LISTENSOCK_FILENO is a listener ipcFd or the end of a
1902 * pipe (ie. standard in).
1905 * TRUE if the process is a CGI process, FALSE if FastCGI.
1907 *----------------------------------------------------------------------
1909 int FCGX_IsCGI(void)
1911 if (isFastCGI != -1) {
1915 if (!libInitialized) {
1916 int rc = FCGX_Init();
1918 /* exit() isn't great, but hey */
1919 exit((rc < 0) ? rc : -rc);
1923 isFastCGI = OS_IsFcgi(FCGI_LISTENSOCK_FILENO);
1929 *----------------------------------------------------------------------
1933 * Finishes the current request from the HTTP server.
1937 * Finishes the request accepted by (and frees any
1938 * storage allocated by) the previous call to FCGX_Accept.
1940 * DO NOT retain pointers to the envp array or any strings
1941 * contained in it (e.g. to the result of calling FCGX_GetParam),
1942 * since these will be freed by the next call to FCGX_Finish
1945 *----------------------------------------------------------------------
1948 void FCGX_Finish(void)
1950 FCGX_Finish_r(reqDataPtr);
1954 *----------------------------------------------------------------------
1958 * Finishes the current request from the HTTP server.
1962 * Finishes the request accepted by (and frees any
1963 * storage allocated by) the previous call to FCGX_Accept.
1965 * DO NOT retain pointers to the envp array or any strings
1966 * contained in it (e.g. to the result of calling FCGX_GetParam),
1967 * since these will be freed by the next call to FCGX_Finish
1970 *----------------------------------------------------------------------
1972 void FCGX_Finish_r(FCGX_Request *reqDataPtr)
1974 if (reqDataPtr == NULL) {
1978 if (reqDataPtr->in) {
1979 int errStatus = FCGX_FClose(reqDataPtr->err);
1980 int outStatus = FCGX_FClose(reqDataPtr->out);
1982 if (errStatus || outStatus
1983 || FCGX_GetError(reqDataPtr->in)
1984 || !reqDataPtr->keepConnection)
1986 OS_IpcClose(reqDataPtr->ipcFd);
1989 ASSERT(reqDataPtr->nWriters == 0);
1991 FreeStream(&reqDataPtr->in);
1992 FreeStream(&reqDataPtr->out);
1993 FreeStream(&reqDataPtr->err);
1995 FreeParams(&reqDataPtr->paramsPtr);
1998 if (!reqDataPtr->keepConnection) {
1999 reqDataPtr->ipcFd = -1;
2003 int FCGX_OpenSocket(const char *path, int backlog)
2005 int rc = OS_CreateLocalIpcFd(path, backlog);
2006 if (rc == FCGI_LISTENSOCK_FILENO && isFastCGI == 0) {
2007 /* XXX probably need to call OS_LibInit() again for Win */
2013 int FCGX_InitRequest(FCGX_Request *request, int sock, int flags)
2015 memset(request, 0, sizeof(FCGX_Request));
2017 /* @@@ Should check that sock is open and listening */
2018 request->listen_sock = sock;
2020 /* @@@ Should validate against "known" flags */
2021 request->flags = flags;
2027 *----------------------------------------------------------------------
2031 * Initilize the FCGX library. This is called by FCGX_Accept()
2032 * but must be called by the user when using FCGX_Accept_r().
2035 * 0 for successful call.
2037 *----------------------------------------------------------------------
2043 if (libInitialized) {
2047 /* If our compiler doesn't play by the ISO rules for struct layout, halt. */
2048 ASSERT(sizeof(FCGI_Header) == FCGI_HEADER_LEN);
2050 FCGX_InitRequest(&reqData, FCGI_LISTENSOCK_FILENO, 0);
2052 if (OS_LibInit(NULL) == -1) {
2053 return OS_Errno ? OS_Errno : -9997;
2056 p = getenv("FCGI_WEB_SERVER_ADDRS");
2057 webServerAddressList = p ? StringCopy(p) : "";
2064 *----------------------------------------------------------------------
2068 * Accepts a new request from the HTTP server.
2071 * 0 for successful call, -1 for error.
2075 * Finishes the request accepted by (and frees any
2076 * storage allocated by) the previous call to FCGX_Accept.
2077 * Creates input, output, and error streams and
2078 * assigns them to *in, *out, and *err respectively.
2079 * Creates a parameters data structure to be accessed
2080 * via getenv(3) (if assigned to environ) or by FCGX_GetParam
2081 * and assigns it to *envp.
2083 * DO NOT retain pointers to the envp array or any strings
2084 * contained in it (e.g. to the result of calling FCGX_GetParam),
2085 * since these will be freed by the next call to FCGX_Finish
2088 *----------------------------------------------------------------------
2095 FCGX_ParamArray *envp)
2099 if (!libInitialized) {
2100 if ((rc = FCGX_Init())) {
2101 return (rc < 0) ? rc : -rc;
2105 rc = FCGX_Accept_r(&reqData);
2110 *envp = reqData.envp;
2116 *----------------------------------------------------------------------
2120 * Accepts a new request from the HTTP server.
2123 * 0 for successful call, -1 for error.
2127 * Finishes the request accepted by (and frees any
2128 * storage allocated by) the previous call to FCGX_Accept.
2129 * Creates input, output, and error streams and
2130 * assigns them to *in, *out, and *err respectively.
2131 * Creates a parameters data structure to be accessed
2132 * via getenv(3) (if assigned to environ) or by FCGX_GetParam
2133 * and assigns it to *envp.
2135 * DO NOT retain pointers to the envp array or any strings
2136 * contained in it (e.g. to the result of calling FCGX_GetParam),
2137 * since these will be freed by the next call to FCGX_Finish
2140 *----------------------------------------------------------------------
2142 int FCGX_Accept_r(FCGX_Request *reqDataPtr)
2144 if (!libInitialized) {
2148 /* Finish the current request, if any. */
2149 FCGX_Finish_r(reqDataPtr);
2153 * If a connection isn't open, accept a new connection (blocking).
2154 * If an OS error occurs in accepting the connection,
2155 * return -1 to the caller, who should exit.
2157 if (reqDataPtr->ipcFd < 0) {
2158 int fail_on_intr = reqDataPtr->flags & FCGI_FAIL_ACCEPT_ON_INTR;
2160 reqDataPtr->ipcFd = OS_Accept(reqDataPtr->listen_sock, fail_on_intr, webServerAddressList);
2161 if (reqDataPtr->ipcFd < 0) {
2162 return (errno > 0) ? (0 - errno) : -9999;
2166 * A connection is open. Read from the connection in order to
2167 * get the request's role and environment. If protocol or other
2168 * errors occur, close the connection and try again.
2170 reqDataPtr->isBeginProcessed = FALSE;
2171 reqDataPtr->in = NewReader(reqDataPtr, 8192, 0);
2172 FillBuffProc(reqDataPtr->in);
2173 if(!reqDataPtr->isBeginProcessed) {
2178 switch(reqDataPtr->role) {
2179 case FCGI_RESPONDER:
2180 roleStr = "FCGI_ROLE=RESPONDER";
2182 case FCGI_AUTHORIZER:
2183 roleStr = "FCGI_ROLE=AUTHORIZER";
2186 roleStr = "FCGI_ROLE=FILTER";
2191 reqDataPtr->paramsPtr = NewParams(30);
2192 PutParam(reqDataPtr->paramsPtr, StringCopy(roleStr));
2194 SetReaderType(reqDataPtr->in, FCGI_PARAMS);
2195 if(ReadParams(reqDataPtr->paramsPtr, reqDataPtr->in) >= 0) {
2197 * Finished reading the environment. No errors occurred, so
2198 * leave the connection-retry loop.
2203 * Close the connection and try again.
2206 FreeParams(&reqDataPtr->paramsPtr);
2207 FreeStream(&reqDataPtr->in);
2208 OS_Close(reqDataPtr->ipcFd);
2209 reqDataPtr->ipcFd = -1;
2212 * Build the remaining data structures representing the new
2213 * request and return successfully to the caller.
2215 SetReaderType(reqDataPtr->in, FCGI_STDIN);
2216 reqDataPtr->out = NewWriter(reqDataPtr, 8192, FCGI_STDOUT);
2217 reqDataPtr->err = NewWriter(reqDataPtr, 512, FCGI_STDERR);
2218 reqDataPtr->nWriters = 2;
2219 reqDataPtr->envp = reqDataPtr->paramsPtr->vec;
2224 *----------------------------------------------------------------------
2226 * FCGX_StartFilterData --
2228 * stream is an input stream for a FCGI_FILTER request.
2229 * stream is positioned at EOF on FCGI_STDIN.
2230 * Repositions stream to the start of FCGI_DATA.
2231 * If the preconditions are not met (e.g. FCGI_STDIN has not
2232 * been read to EOF) sets the stream error code to
2233 * FCGX_CALL_SEQ_ERROR.
2236 * 0 for a normal return, < 0 for error
2238 *----------------------------------------------------------------------
2241 int FCGX_StartFilterData(FCGX_Stream *stream)
2243 FCGX_Stream_Data *data = (FCGX_Stream_Data *)stream->data;
2244 if(data->reqDataPtr->role != FCGI_FILTER
2245 || !stream->isReader
2246 || !stream->isClosed
2247 || data->type != FCGI_STDIN) {
2248 SetError(stream, FCGX_CALL_SEQ_ERROR);
2251 SetReaderType(reqDataPtr->in, FCGI_DATA);
2256 *----------------------------------------------------------------------
2258 * FCGX_SetExitStatus --
2260 * Sets the exit status for stream's request. The exit status
2261 * is the status code the request would have exited with, had
2262 * the request been run as a CGI program. You can call
2263 * SetExitStatus several times during a request; the last call
2264 * before the request ends determines the value.
2266 *----------------------------------------------------------------------
2269 void FCGX_SetExitStatus(int status, FCGX_Stream *stream)
2271 FCGX_Stream_Data *data = (FCGX_Stream_Data *)stream->data;
2272 data->reqDataPtr->appStatus = status;