/*
** Matches MIME constructions for content-types and others like
** them, for example "text/html", "text/plain". It can also match
** wild cards like "text/<star>" and "<star>/<star>. We use <star>
** instead of * in order note to make C like comments :-)
*/
PUBLIC BOOL HTMIMEMatch (HTAtom * tmplate, HTAtom * actual)
{
const char *t, *a;
char *st, *sa;
BOOL match = NO;
if (tmplate && actual && (t = HTAtom_name(tmplate))) {
if (!strcmp(t, "*"))
return YES;
if (strchr(t, '*') &&
(a = HTAtom_name(actual)) &&
(st = strchr(t, '/')) && (sa = strchr(a,'/'))) {
*sa = 0;
*st = 0;
if ((*(st-1)=='*' &&
(*(st+1)=='*' || !strcasecomp(st+1, sa+1))) ||
(*(st+1)=='*' && !strcasecomp(t,a)))
match = YES;
*sa = '/';
*st = '/';
}
}
return match;
}
/*
** Returns the icon corresponding to content_type or content_encoding.
** If no match is found then use "unknown icon"
*/
PUBLIC HTIconNode * HTIcon_find (HTFileMode mode,
HTFormat content_type,
HTEncoding content_encoding)
{
if (!icon_unknown) icon_unknown = icon_blank;
if (mode == HT_IS_FILE) {
const char * ct = content_type ? HTAtom_name(content_type) : NULL;
const char * ce = content_encoding ? HTAtom_name(content_encoding) : NULL;
HTList * cur = icons;
HTIconNode * node;
while ((node = (HTIconNode*)HTList_nextObject(cur))) {
char * slash = strchr(node->type_templ,'/');
if ((ct && slash && match(node->type_templ,ct)) ||
(ce && !slash && HTStrMatch(node->type_templ,ce))) {
return node;
}
}
} else if (mode == HT_IS_DIR) {
return icon_dir ? icon_dir : icon_unknown;
} else if (mode == HT_IS_BLANK) {
return icon_blank ? icon_blank : icon_unknown;
} else if (mode == HT_IS_PARENT) {
return icon_parent ? icon_parent : icon_unknown;
}
return icon_unknown;
}
/* * Added by [email protected] (94/04/08) */ PRIVATE BOOL lang_match (HTAtom * tmplate, HTAtom * actual) { const char *t, *a; char *st, *sa; BOOL match = NO; if (tmplate && actual && (t = HTAtom_name(tmplate)) && (a = HTAtom_name(actual))) { st = strchr(t, '_'); sa = strchr(a, '_'); if ((st != NULL) && (sa != NULL)) { if (!strcasecomp(t, a)) match = YES; else match = NO; } else { if (st != NULL) *st = 0; if (sa != NULL) *sa = 0; if (!strcasecomp(t, a)) match = YES; else match = NO; if (st != NULL) *st = '_'; if (sa != NULL) *sa = '_'; } } return match; }
/* Parse a file given format and file pointer
**
** This routine is responsible for creating and PRESENTING any
** graphic (or other) objects described by the file.
**
** The file number given is assumed to be a TELNET stream ie containing
** CRLF at the end of lines which need to be stripped to LF for unix
** when the format is textual.
**
*/
PUBLIC int HTParseFile ARGS6(
HTFormat, format_in,
HTFormat, format_out,
HTParentAnchor *, anchor,
FILE *, fp,
HTStream*, sink,
int, compressed)
{
HTStream * stream;
HTStreamClass targetClass;
stream = HTStreamStack(format_in,
format_out,
compressed,
sink , anchor);
if (!stream) {
char buffer[1024]; /* @@@@@@@@ */
sprintf(buffer, "Sorry, can't convert from %s to %s.",
HTAtom_name(format_in), HTAtom_name(format_out));
#ifndef DISABLE_TRACE
if (www2Trace) fprintf(stderr, "HTFormat(in HTParseFile): %s\n", buffer);
#endif
return HTLoadError(sink, 501, buffer);
}
targetClass = *(stream->isa); /* Copy pointers to procedures */
HTFileCopy(fp, stream);
(*targetClass.end_document)(stream);
(*targetClass.free)(stream);
return HT_LOADED;
}
/* Find the cost of a filter stack
** -------------------------------
**
** Must return the cost of the same stack which StreamStack would set up.
**
** On entry,
** length The size of the data to be converted
*/
PUBLIC double HTStackValue (HTList * theseConversions,
HTFormat rep_in,
HTFormat rep_out,
double initial_value,
long int length)
{
int which_list;
HTList* conversion[2];
HTTRACE(CORE_TRACE, "StackValue.. Evaluating stream stack for %s worth %.3f to %s\n" _
HTAtom_name(rep_in) _ initial_value _ HTAtom_name(rep_out));
if (rep_out == WWW_SOURCE || rep_out == rep_in) return 0.0;
conversion[0] = theseConversions;
conversion[1] = HTConversions;
for(which_list = 0; which_list<2; which_list++)
if (conversion[which_list]) {
HTList * cur = conversion[which_list];
HTPresentation * pres;
while ((pres = (HTPresentation*)HTList_nextObject(cur))) {
if (pres->rep == rep_in &&
(pres->rep_out == rep_out || HTMIMEMatch(pres->rep_out, rep_out))) {
double value = initial_value * pres->quality;
if (HTMaxSecs != 0.0)
value = value - (length*pres->secs_per_byte + pres->secs)
/HTMaxSecs;
return value;
}
}
}
return NO_VALUE_FOUND; /* Really bad */
}
/* Parse a document in memory given format and memory block pointer
**
** This routine is responsible for creating and PRESENTING any
** graphic (or other) objects described by the file.
**
** State of memory and target stream on entry:
** HTChunk* (chunk) assumed valid,
** target (sink) usually NULL (will call stream stack).
**
** Return values:
** -501 Stream stack failed (cannot present or convert).
** HT_LOADED All data sent.
**
** State of memory and target stream on return:
** always chunk unchanged; target freed, aborted, or NULL.
*/
PUBLIC int HTParseMem ARGS5(
HTFormat, rep_in,
HTFormat, format_out,
HTParentAnchor *, anchor,
HTChunk *, chunk,
HTStream *, sink)
{
HTStream * stream;
HTStreamClass targetClass;
int rv;
stream = HTStreamStack(rep_in, format_out, sink, anchor);
if (!stream) {
char *buffer = 0;
HTSprintf0(&buffer, CANNOT_CONVERT_I_TO_O,
HTAtom_name(rep_in), HTAtom_name(format_out));
CTRACE((tfp, "HTFormat(in HTParseMem): %s\n", buffer));
rv = HTLoadError(sink, 501, buffer);
FREE(buffer);
return rv;
}
/* Push the data down the stream
*/
targetClass = *(stream->isa);
rv = HTMemCopy(chunk, stream);
(*targetClass._free)(stream);
return HT_LOADED;
}
/* HTGetIcon()
** returns the icon corresponding to content_type or content_encoding.
*/
PUBLIC HTIconNode * HTGetIcon ARGS3(mode_t, mode,
HTFormat, content_type,
HTFormat, content_encoding)
{
if (!icon_unknown) icon_unknown = icon_blank;
if ((mode & S_IFMT) == S_IFREG) {
char * ct = content_type ? HTAtom_name(content_type) : NULL;
char * ce = content_encoding ? HTAtom_name(content_encoding) : NULL;
HTList * cur = icons;
HTIconNode * node;
while ((node = (HTIconNode*)HTList_nextObject(cur))) {
char * slash = strchr(node->type_templ,'/');
if ((ct && slash && match(node->type_templ,ct)) ||
(ce && !slash && HTAA_templateMatch(node->type_templ,ce))) {
return node;
}
}
} else if ((mode & S_IFMT) == S_IFDIR) {
return icon_dir ? icon_dir : icon_unknown;
} else if ((mode & S_IFMT) == S_IFLNK) {
return icon_dir ? icon_dir : icon_unknown; /* @@ */
}
return icon_unknown;
}
/* Create a new coder and insert it into stream chain
** --------------------------------------------------
** Creating the content decoding stack is not based on quality factors as
** we don't have the freedom as with content types. Specify whether you
** you want encoding or decoding using the BOOL "encode" flag.
*/
PUBLIC HTStream * HTContentCodingStack (HTEncoding encoding,
HTStream * target,
HTRequest * request,
void * param,
BOOL encode)
{
HTList * coders[2];
HTStream * top = target;
HTCoding * pres = NULL;
HTCoding * best_match = NULL;
double best_quality = -1e30; /* Pretty bad! */
int cnt;
if (!encoding || !request) {
HTTRACE(CORE_TRACE, "Codings... Nothing applied...\n");
return target ? target : HTErrorStream();
}
coders[0] = HTRequest_encoding(request);
coders[1] = HTContentCoders;
HTTRACE(CORE_TRACE, "C-E......... Looking for `%s\'\n" _ HTAtom_name(encoding));
for (cnt=0; cnt < 2; cnt++) {
HTList * cur = coders[cnt];
while ((pres = (HTCoding *) HTList_nextObject(cur))) {
if ((pres->encoding == encoding || HTMIMEMatch(pres->encoding, encoding)) &&
pres->quality > best_quality) {
best_match = pres;
best_quality = pres->quality;
}
}
}
if (best_match) {
HTTRACE(CORE_TRACE, "C-E......... Found `%s\'\n" _ HTAtom_name(best_match->encoding));
if (encode) {
if (best_match->encoder)
top = (*best_match->encoder)(request, param, encoding, top);
} else {
if (best_match->decoder)
top = (*best_match->decoder)(request, param, encoding, top);
}
} else if (!HTFormat_isUnityContent(encoding)) {
/*
** If this is not a unity coding and we didn't find any coders
** that could handle it then put in a local file save stream
** instead of the stream that we got.
*/
if (encode) {
HTTRACE(CORE_TRACE, "C-E......... NOT FOUND - can't encode stream!\n");
} else {
HTTRACE(CORE_TRACE, "C-E......... NOT FOUND - error!\n");
top = HTBlackHole();
}
}
return top;
}
PRIVATE BOOL HTRank (HTRequest * request, HTArray * variants)
{
HTContentDescription * cd;
void ** data;
if (!variants) {
HTTRACE(PROT_TRACE, "Ranking..... No variants\n");
return NO;
}
/*
** Walk through the list of local and global preferences and find the
** overall q factor for each variant
*/
cd = (HTContentDescription *) HTArray_firstObject(variants, data);
while (cd) {
double ctq_local = type_value(cd->content_type, HTRequest_conversion(request));
double ctq_global = type_value(cd->content_type, HTFormat_conversion());
double clq_local = lang_value(cd->content_language, HTRequest_language(request));
double clq_global = lang_value(cd->content_language, HTFormat_language());
double ceq_local = encoding_value(cd->content_encoding, HTRequest_encoding(request));
double ceq_global = encoding_value(cd->content_encoding, HTFormat_contentCoding());
HTTRACE(PROT_TRACE, "Qualities... Content type: %.3f, Content language: %.3f, Content encoding: %.3f\n" _
HTMAX(ctq_local, ctq_global) _
HTMAX(clq_local, clq_global) _
HTMAX(ceq_local, ceq_global));
cd->quality *= (HTMAX(ctq_local, ctq_global) *
HTMAX(clq_local, clq_global) *
HTMAX(ceq_local, ceq_global));
cd = (HTContentDescription *) HTArray_nextObject(variants, data);
}
/* Sort the array of all our accepted preferences */
HTArray_sort(variants, VariantSort);
/* Write out the result */
#ifdef HTDEBUG
if (PROT_TRACE) {
int cnt = 1;
cd = (HTContentDescription *) HTArray_firstObject(variants, data);
HTTRACE(PROT_TRACE, "Ranking.....\n");
HTTRACE(PROT_TRACE, "RANK QUALITY CONTENT-TYPE LANGUAGE ENCODING FILE\n");
while (cd) {
HTTRACE(PROT_TRACE, "%d. %.4f %-20.20s %-8.8s %-10.10s %s\n" _
cnt++ _
cd->quality _
cd->content_type ? HTAtom_name(cd->content_type) : "-" _
cd->content_language?HTAtom_name(cd->content_language):"-" _
cd->content_encoding?HTAtom_name(cd->content_encoding):"-" _
cd->filename ? cd->filename :"-");
cd = (HTContentDescription *) HTArray_nextObject(variants, data);
}
}
#endif /* HTDEBUG */
return YES;
}
PRIVATE BOOL better_match (HTFormat f, HTFormat g)
{
const char *p, *q;
if (f && g && (p = HTAtom_name(f)) && (q = HTAtom_name(g))) {
int i,j;
for(i=0 ; *p; p++) if (*p == '*') i++;
for(j=0 ; *q; q++) if (*q == '*') j++;
if (i < j) return YES;
}
return NO;
}
/* Parse a file given format and file pointer
**
** This routine is responsible for creating and PRESENTING any
** graphic (or other) objects described by the file.
**
** The file number given is assumed to be a TELNET stream ie containing
** CRLF at the end of lines which need to be stripped to \n for unix
** when the format is textual.
**
** State of file and target stream on entry:
** FILE* (fp) assumed open,
** target (sink) usually NULL (will call stream stack).
**
** Return values:
** -501 Stream stack failed (cannot present or convert).
** -1 Download cancelled.
** HT_NO_DATA Error before any data read.
** HT_PARTIAL_CONTENT Interruption or error after some data read.
** HT_LOADED Normal end of file indication on reading.
**
** State of file and target stream on return:
** always fp still open; target freed, aborted, or NULL.
*/
PUBLIC int HTParseFile ARGS5(
HTFormat, rep_in,
HTFormat, format_out,
HTParentAnchor *, anchor,
FILE *, fp,
HTStream*, sink)
{
HTStream * stream;
HTStreamClass targetClass;
int rv;
#ifdef SH_EX /* 1998/01/04 (Sun) 16:04:09 */
if (fp == NULL)
return HT_LOADED;
#endif
stream = HTStreamStack(rep_in, format_out, sink, anchor);
if (!stream) {
char *buffer = 0;
if (LYCancelDownload) {
LYCancelDownload = FALSE;
return -1;
}
HTSprintf0(&buffer, CANNOT_CONVERT_I_TO_O,
HTAtom_name(rep_in), HTAtom_name(format_out));
CTRACE((tfp, "HTFormat(in HTParseFile): %s\n", buffer));
rv = HTLoadError(sink, 501, buffer);
FREE(buffer);
return rv;
}
/* Push the data down the stream
**
** @@ Bug: This decision ought to be made based on "encoding"
** rather than on content-type. @@@ When we handle encoding.
** The current method smells anyway.
*/
targetClass = *(stream->isa); /* Copy pointers to procedures */
rv = HTFileCopy(fp, stream);
if (rv == -1 || rv == HT_INTERRUPTED) {
(*targetClass._abort)(stream, NULL);
} else {
(*targetClass._free)(stream);
}
if (rv == -1)
return HT_NO_DATA;
else if (rv == HT_INTERRUPTED || (rv > 0 && rv != HT_LOADED))
return HT_PARTIAL_CONTENT;
else
return HT_LOADED;
}
/* Parse a socket given format and file number
**
** This routine is responsible for creating and PRESENTING any
** graphic (or other) objects described by the file.
**
** The file number given is assumed to be a TELNET stream ie containing
** CRLF at the end of lines which need to be stripped to LF for unix
** when the format is textual.
**
*/
PUBLIC int HTParseSocket ARGS6(
HTFormat, format_in,
HTFormat, format_out,
HTParentAnchor *, anchor,
int, file_number,
HTStream*, sink,
int, compressed)
{
HTStream * stream;
HTStreamClass targetClass;
int rv;
stream = HTStreamStack(format_in,
format_out,
compressed,
sink, anchor);
if (!stream)
{
char buffer[1024]; /* @@@@@@@@ */
sprintf(buffer, "Sorry, can't convert from %s to %s.",
HTAtom_name(format_in), HTAtom_name(format_out));
#ifndef DISABLE_TRACE
if (www2Trace) fprintf(stderr, "HTFormat: %s\n", buffer);
#endif
return HTLoadError(sink, 501, buffer);
}
targetClass = *(stream->isa); /* Copy pointers to procedures */
rv = HTCopy(file_number, stream, 0);
if (rv == -1)
{
/* handle_interrupt should have been done in HTCopy */
/* (*targetClass.handle_interrupt)(stream); */
return HT_INTERRUPTED;
}
(*targetClass.end_document)(stream);
/* New thing: we force close the data socket here, so that if
an external viewer gets forked off in the free method below,
the connection doesn't remain upon until the child exits --
which it does if we don't do this. */
NETCLOSE (file_number);
(*targetClass.free)(stream);
return HT_LOADED;
}
/* Determine file format from file name -- string version
** ------------------------------------------------------
*/
PUBLIC char *HTFileMimeType ARGS2 (
WWW_CONST char *, filename,
WWW_CONST char *, default_type)
{
HTAtom *pencoding;
HTFormat format;
int compressed;
format = HTFileFormat (filename, &pencoding, HTAtom_for (default_type),
&compressed);
if (HTAtom_name (format))
return HTAtom_name (format);
else
return default_type;
}
/* Link me Anchor to another given one
** -------------------------------------
*/
PUBLIC BOOL HTLink_add (HTAnchor * source,
HTAnchor * destination,
HTLinkType type,
HTMethod method)
{
if (source && destination) {
HTTRACE(ANCH_TRACE, "Link create. from anchor %p to %p with type %s, method %s\n" _
(void *) source _ (void *) destination _
type ? HTAtom_name(type) : "NONE" _
method != METHOD_INVALID ? HTMethod_name(method) : "NONE");
if (!source->mainLink.dest) {
source->mainLink.dest = destination;
source->mainLink.type = type;
source->mainLink.method = method;
} else {
HTLink * newLink = HTLink_new();
newLink->dest = destination;
newLink->type = type;
newLink->method = method;
if (!source->links) source->links = HTList_new();
HTList_addObject (source->links, newLink);
}
if (!destination->parent->sources)
destination->parent->sources = HTList_new();
HTList_addObject (destination->parent->sources, source);
return YES;
} else
HTTRACE(ANCH_TRACE, "Link........ Bad argument\n");
return NO;
}
/* Create a filter stack
** ---------------------
**
** If a wildcard match is made, a temporary HTPresentation
** structure is made to hold the destination format while the
** new stack is generated. This is just to pass the out format to
** MIME so far. Storing the format of a stream in the stream might
** be a lot neater.
**
*/
PUBLIC HTStream * HTStreamStack ARGS4(
HTFormat, rep_in,
HTFormat, rep_out,
HTStream*, sink,
HTParentAnchor*, anchor)
{
HTPresentation temp;
HTPresentation *match;
HTStream *result;
CTRACE((tfp, "HTFormat: Constructing stream stack for %s to %s\n",
HTAtom_name(rep_in), HTAtom_name(rep_out)));
/* don't return on WWW_SOURCE some people might like
* to make use of the source!!!! LJM
*/
#if 0
if (rep_out == WWW_SOURCE || rep_out == rep_in)
return sink; /* LJM */
#endif
if (rep_out == rep_in) {
result = sink;
} else if ((match = HTFindPresentation(rep_in, rep_out, &temp))) {
if (match == &temp) {
CTRACE((tfp, "StreamStack: Using %s\n", HTAtom_name(temp.rep_out)));
} else {
CTRACE((tfp, "StreamStack: found exact match: %s\n",
HTAtom_name(match->rep)));
}
result = (*match->converter)(match, anchor, sink);
} else {
result = NULL;
}
if (TRACE) {
if (result && result->isa && result->isa->name) {
CTRACE((tfp, "StreamStack: Returning \"%s\"\n", result->isa->name));
} else if (result) {
CTRACE((tfp, "StreamStack: Returning *unknown* stream!\n"));
} else {
CTRACE((tfp, "StreamStack: Returning NULL!\n"));
CTRACE_FLUSH(tfp); /* a crash may be imminent... - kw */
}
}
return result;
}
/* Create a new transfer coder and insert it into stream chain
** -----------------------------------------------------------
** Creating the content decoding stack is not based on quality factors as
** we don't have the freedom as with content types. Specify whether you
** you want encoding or decoding using the BOOL "encode" flag.
*/
PUBLIC HTStream * HTContentTransferCodingStack (HTEncoding encoding,
HTStream * target,
HTRequest * request,
void * param,
BOOL encode)
{
HTList * coders[2];
HTStream * top = target;
HTCoding * pres = NULL;
int cnt;
if (!encoding || !request) {
HTTRACE(CORE_TRACE, "C-T-E..... Nothing applied...\n");
return target ? target : HTErrorStream();
}
/*
** We use the same encoders/decoders as for Transfer-Encodings
*/
coders[0] = HTRequest_transfer(request);
coders[1] = HTTransferCoders;
HTTRACE(CORE_TRACE, "C-T-E....... Looking for %s\n" _ HTAtom_name(encoding));
for (cnt=0; cnt < 2; cnt++) {
HTList * cur = coders[cnt];
while ((pres = (HTCoding *) HTList_nextObject(cur))) {
if (pres->encoding == encoding) {
HTTRACE(CORE_TRACE, "C-T-E....... Found...\n");
if (encode) {
if (pres->encoder)
top = (*pres->encoder)(request, param, encoding, top);
break;
} else if (pres->decoder) {
top = (*pres->decoder)(request, param, encoding, top);
break;
}
}
}
}
/*
** If this is not a unity coding and we didn't find any coders
** that could handle it then put in a local file save stream
** instead of the stream that we got.
*/
if (!HTFormat_isUnityTransfer(encoding) && target==top) {
if (encode) {
HTTRACE(CORE_TRACE, "C-T-E....... NOT FOUND - removing encoding!\n");
HTAnchor_setContentTransferEncoding(HTRequest_anchor(request), NULL);
} else {
HTTRACE(CORE_TRACE, "C-T-E....... NOT FOUND - error!\n");
top = HTBlackHole();
}
}
return top;
}
/* Find the cost of a filter stack
** -------------------------------
**
** Must return the cost of the same stack which StreamStack would set up.
**
** On entry,
** length The size of the data to be converted
*/
PUBLIC float HTStackValue ARGS4(
HTFormat, format_in,
HTFormat, rep_out,
float, initial_value,
long int, length)
{
HTAtom * wildcard = HTAtom_for("*");
#ifndef DISABLE_TRACE
if (www2Trace) fprintf(stderr,
"HTFormat: Evaluating stream stack for %s worth %.3f to %s\n",
HTAtom_name(format_in), initial_value,
HTAtom_name(rep_out));
#endif
if (rep_out == WWW_SOURCE ||
rep_out == format_in) return 0.0;
if (!HTPresentations) HTFormatInit(); /* set up the list */
{
int n = HTList_count(HTPresentations);
int i;
HTPresentation * pres;
for(i=0; i<n; i++) {
pres = HTList_objectAt(HTPresentations, i);
if (pres->rep == format_in && (
pres->rep_out == rep_out ||
pres->rep_out == wildcard)) {
float value = initial_value * pres->quality;
if (HTMaxSecs != 0.0)
value = value - (length*pres->secs_per_byte + pres->secs)
/HTMaxSecs;
return value;
}
}
}
return -1e30; /* Really bad */
}
/* Find the cost of a filter stack
** -------------------------------
**
** Must return the cost of the same stack which StreamStack would set up.
**
** On entry,
** length The size of the data to be converted
*/
PUBLIC float HTStackValue ARGS4(
HTFormat, rep_in,
HTFormat, rep_out,
float, initial_value,
long int, length)
{
HTAtom * wildcard = WWW_WILDCARD_REP_OUT;
CTRACE((tfp, "HTFormat: Evaluating stream stack for %s worth %.3f to %s\n",
HTAtom_name(rep_in), initial_value, HTAtom_name(rep_out)));
if (rep_out == WWW_SOURCE || rep_out == rep_in)
return 0.0;
/* don't do anymore do it in the Lynx code at startup LJM */
/* if (!HTPresentations) HTFormatInit(); */ /* set up the list */
{
int n = HTList_count(HTPresentations);
int i;
HTPresentation * pres;
for (i = 0; i < n; i++) {
pres = (HTPresentation *)HTList_objectAt(HTPresentations, i);
if (pres->rep == rep_in &&
(pres->rep_out == rep_out || pres->rep_out == wildcard)) {
float value = initial_value * pres->quality;
if (HTMaxSecs != 0.0)
value = value - (length*pres->secs_per_byte + pres->secs)
/HTMaxSecs;
return value;
}
}
}
return (float) -1e30; /* Really bad */
}
/* Parse a socket given format and file number
**
** This routine is responsible for creating and PRESENTING any
** graphic (or other) objects described by the file.
**
** The file number given is assumed to be a TELNET stream ie containing
** CRLF at the end of lines which need to be stripped to LF for unix
** when the format is textual.
**
** State of socket and target stream on entry:
** socket (file_number) assumed open,
** target (sink) usually NULL (will call stream stack).
**
** Return values:
** HT_INTERRUPTED Interruption or error after some data received.
** -501 Stream stack failed (cannot present or convert).
** -2 Unexpected disconnect before any data received.
** -1 Stream stack failed (cannot present or convert), or
** Interruption or error before any data received, or
** (UNIX) other read error before any data received, or
** download cancelled.
** HT_LOADED Normal close of socket (end of file indication
** received), or
** unexpected disconnect after some data received, or
** other read error after some data received, or
** (not UNIX) other read error before any data received.
**
** State of socket and target stream on return depends on return value:
** HT_INTERRUPTED socket still open, target aborted.
** -501 socket still open, target stream NULL.
** -2 socket still open, target freed.
** -1 socket still open, target stream aborted or NULL.
** otherwise socket closed, target stream freed.
*/
PUBLIC int HTParseSocket ARGS5(
HTFormat, rep_in,
HTFormat, format_out,
HTParentAnchor *, anchor,
int, file_number,
HTStream*, sink)
{
HTStream * stream;
HTStreamClass targetClass;
int rv;
stream = HTStreamStack(rep_in, format_out, sink, anchor);
if (!stream) {
char *buffer = 0;
if (LYCancelDownload) {
LYCancelDownload = FALSE;
return -1;
}
HTSprintf0(&buffer, CANNOT_CONVERT_I_TO_O,
HTAtom_name(rep_in), HTAtom_name(format_out));
CTRACE((tfp, "HTFormat: %s\n", buffer));
rv = HTLoadError(sink, 501, buffer); /* returns -501 */
FREE(buffer);
} else {
/*
** Push the data, don't worry about CRLF we can strip them later.
*/
targetClass = *(stream->isa); /* Copy pointers to procedures */
rv = HTCopy(anchor, file_number, NULL, stream);
if (rv != -1 && rv != HT_INTERRUPTED)
(*targetClass._free)(stream);
}
return rv;
/* Originally: full: HT_LOADED; partial: HT_INTERRUPTED; no bytes: -1 */
}
PRIVATE double encoding_value (HTAtom * encoding, HTList * accepted)
{
if (!encoding) return (1.0);
if (accepted) {
HTList * cur = accepted;
HTAcceptNode * node;
HTAcceptNode * wild = NULL;
const char * e = HTAtom_name(encoding);
if (!strcmp(e, "7bit") || !strcmp(e, "8bit") || !strcmp(e, "binary"))
return (1.0);
while ((node = (HTAcceptNode*)HTList_nextObject(cur))) {
if (node->atom == encoding)
return node->quality;
else if (HTMIMEMatch(node->atom, encoding))
wild = node;
}
if (wild) return wild->quality;
else return (0.0); /* Nothing matched */
}
return (1.0); /* We accept all encodings */
}
/*
** request_terminater : global filter to delete the requests
** Funtion's type : HTNetAfter
*/
PRIVATE int terminate_handler (HTRequest * request, HTResponse * response,
void * param, int status)
{
my_headers(request);
if (response) {
HTPrint ("\tStatus:%d\n\tContent-length:%d\n\tIs Cachable:%c\n\tis Cached:%c\n\tReason: %s\n",\
status, HTResponse_length(response),\
(HTResponse_isCachable(response))?'Y':'N',\
(HTResponse_isCached(response,YES))?'Y':'N', \
(HTResponse_reason(response))?HTResponse_reason(response):"NULL");
HTPrint ("\tFormat : %s \n",(char *)HTAtom_name(HTResponse_format(response)));
}
else
HTPrint ("\tResponse NULL\n");
/* Terminate libwww */
HTProfile_delete();
exit(0);
}
PRIVATE int HTGuess_flush (HTStream * me)
{
if (!me->transparent) {
HTResponse * response = me->response;
/*
** First we look for magic tokens and evaluate the contents of the buffer
** that we are investigating.
*/
if (me->cnt) {
HTTRACE(STREAM_TRACE, "GUESSING.... Result of content analysis: Text=%d%% Newlines=%d%% Ctrl=%d%% High=%d%%\n" _
(int)(100*me->text_cnt/me->cnt + 0.5) _
(int)(100*me->lf_cnt /me->cnt + 0.5) _
(int)(100*me->ctrl_cnt/me->cnt + 0.5) _
(int)(100*me->high_cnt/me->cnt + 0.5));
}
if (!me->ctrl_cnt ||
me->text_cnt + me->lf_cnt >= 16 * (me->ctrl_cnt + me->high_cnt)) {
char *ptr;
/* some kind of text */
*me->write_ptr = 0; /* terminate buffer */
if (me->high_cnt > 0)
HTResponse_setContentTransferEncoding(response, WWW_CODING_8BIT);
else
HTResponse_setContentTransferEncoding(response, WWW_CODING_7BIT);
if (is_html(me->buffer))
HTResponse_setFormat(response, HTAtom_for("text/html"));
else if (!strncmp(me->buffer, "%!", 2))
HTResponse_setFormat(response, HTAtom_for("application/postscript"));
else if (strstr(me->buffer, "#define") &&
strstr(me->buffer, "_width") &&
strstr(me->buffer, "_bits"))
HTResponse_setFormat(response, HTAtom_for("image/x-xbitmap"));
else if ((ptr = strstr(me->buffer, "converted with BinHex"))!=NULL)
HTResponse_setContentTransferEncoding(response, WWW_CODING_MACBINHEX);
else if (!strncmp(me->buffer, "begin ", 6))
HTResponse_setContentTransferEncoding(response, WWW_CODING_BASE64);
else
HTResponse_setFormat(response, WWW_PLAINTEXT);
}
else {
if (!strncmp(me->buffer, "GIF", 3))
HTResponse_setFormat(response, WWW_GIF);
else if (!strncmp(me->buffer, "\377\330\377\340", 4))
HTResponse_setFormat(response, WWW_JPEG);
else if (!strcmp(me->buffer, "MM")) /* MM followed by a zero */
HTResponse_setFormat(response, WWW_TIFF);
else if (!strncmp(me->buffer, "\211PNG\r\n\032\n", 8))
HTResponse_setFormat(response, WWW_PNG);
else if (!strncmp(me->buffer, ".snd", 4))
HTResponse_setFormat(response, WWW_AUDIO);
else if (!strncmp(me->buffer, "\037\235", 2))
HTResponse_addEncoding(response, WWW_CODING_COMPRESS);
else if (!strncmp(me->buffer, "\037\213", 2))
HTResponse_addEncoding(response, WWW_CODING_GZIP);
else
HTResponse_setFormat(response, WWW_BINARY);
}
/*
** If we couldn't find any magic tokens then we try and look at the suffix
** of the URL file name and use our own bindings to see if that gives any
** results.
*/
if (HTResponse_format(response) == WWW_UNKNOWN) {
HTParentAnchor * anchor = HTRequest_anchor(me->request);
char * addr = HTAnchor_physical(anchor);
HTTRACE(STREAM_TRACE, "GUESSING.... Hmm - trying local bindings\n");
HTBind_getResponseBindings (response, addr);
}
/*
** If nothing worked then give up and say binary...
*/
if (HTResponse_format(response) == WWW_UNKNOWN) {
HTTRACE(STREAM_TRACE, "GUESSING.... That's it - I'm giving up!\n");
HTResponse_setFormat(response, WWW_BINARY);
}
HTTRACE(STREAM_TRACE, "Guessed..... Content-Type `%s\'\n" _ HTAtom_name(HTResponse_format(response)));
/*
** Set up the new stream stack with the type we figured out
*/
if ((me->target = HTStreamStack(HTResponse_format(response),
me->output_format, me->output_stream,
me->request, NO)) == NULL) {
HTTRACE(STREAM_TRACE, "HTGuess..... Can't convert media type\n");
me->target = HTErrorStream();
}
me->transparent = YES;
return PUT_BLOCK(me->buffer, me->cnt);
}
return HT_OK;
}
/* Create a filter stack
** ---------------------
**
** If a wildcard match is made, a temporary HTPresentation
** structure is made to hold the destination format while the
** new stack is generated. This is just to pass the out format to
** MIME so far. Storing the format of a stream in the stream might
** be a lot neater.
*/
PUBLIC HTStream * HTStreamStack ARGS5(
HTFormat, format_in,
HTFormat, rep_out,
int, compressed,
HTStream*, sink,
HTParentAnchor*, anchor)
{
HTAtom * wildcard = HTAtom_for("*");
HTPresentation temp;
/* Inherit force_dump_to_file from mo-www.c. */
extern int force_dump_to_file;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf(stderr,
"[HTStreamStack] Constructing stream stack for %s to %s\n",
HTAtom_name(format_in),
HTAtom_name(rep_out));
#endif
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
" Compressed is %d\n", compressed);
#endif
if (rep_out == WWW_SOURCE ||
rep_out == format_in)
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[HTStreamStack] rep_out == WWW_SOURCE | rep_out == format_in; returning sink\n");
#endif
return sink;
}
if (!HTPresentations)
HTFormatInit(); /* set up the list */
if (force_dump_to_file && format_in != WWW_MIME)
{
return HTSaveAndExecute (NULL, anchor, sink, format_in, compressed);
}
{
int n = HTList_count(HTPresentations);
int i;
HTPresentation * pres;
for(i=0; i<n; i++)
{
pres = HTList_objectAt(HTPresentations, i);
#ifndef DISABLE_TRACE
if (www2Trace)
{
fprintf (stderr, "HTFormat: looking at pres '%s'\n",
HTAtom_name (pres->rep));
if (pres->command)
fprintf (stderr, "HTFormat: pres->command is '%s'\n",
pres->command);
else
fprintf (stderr, "HTFormat: pres->command doesn't exist\n");
}
#endif
if (pres->rep == format_in ||
partial_wildcard_matches (pres->rep, format_in))
{
if (pres->command && strstr (pres->command, "mosaic-internal-present"))
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[HTStreamStack] HEY HEY HEY caught internal-present\n");
#endif
return HTPlainPresent (pres, anchor, sink, format_in, compressed);
}
if (pres->rep_out == rep_out)
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[HTStreamStack] pres->rep_out == rep_out\n");
#endif
return (*pres->converter)(pres, anchor, sink, format_in, compressed);
}
if (pres->rep_out == wildcard)
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[HTStreamStack] pres->rep_out == wildcard\n");
#endif
temp = *pres;/* make temp conversion to needed fmt */
temp.rep_out = rep_out; /* yuk */
return (*pres->converter)(&temp, anchor, sink, format_in, compressed);
}
}
}
}
#ifndef DISABLE_TRACE
if (www2Trace)
{
fprintf (stderr, "[HTStreamStack] Returning NULL at bottom.\n");
}
#endif
return NULL;
}
static int partial_wildcard_matches (HTFormat r1, HTFormat r2)
{
/* r1 is the presentation format we're currently looking at out
of the list we understand. r2 is the one we need to get to. */
char *s1, *s2, *subtype1 = NULL, *subtype2 = NULL;
int i;
s1 = HTAtom_name (r1);
s2 = HTAtom_name (r2);
if (!s1 || !s2)
return 0;
s1 = strdup (s1);
s2 = strdup (s2);
for (i = 0; i < strlen (s1); i++)
if (s1[i] == '/')
{
s1[i] = '\0';
subtype1 = &(s1[i+1]);
/* Now s1 contains the main type and subtype1 contains
the subtype. */
goto done1;
}
done1:
if (!subtype1)
goto nope;
/* Bail if we don't have a wildcard possibility. */
if (subtype1[0] != '*')
goto nope;
for (i = 0; i < strlen (s2); i++)
if (s2[i] == '/')
{
s2[i] = '\0';
subtype2 = &(s2[i+1]);
/* Now s2 contains the main type and subtype2 contains
the subtype. */
goto done2;
}
done2:
if (!subtype2)
goto nope;
/* Bail if s1 and s2 aren't the same and s1[0] isn't '*'. */
if (strcmp (s1, s2) && s1[0] != '*')
goto nope;
/* OK, so now either we have the same main types or we have a wildcard
type for s1. We also know that we have a wildcard possibility in
s1. Therefore, at this point, we have a match. */
free (s1);
free (s2);
return 1;
nope:
free (s1);
free (s2);
return 0;
}
/* Determine the content of an file name
** -------------------------------------
** Use the set of bindings to find the combination of language,
** media type, encoding, and transfer encoding of a given anchor.
** If more than one suffix is found they are all searched. The last suffix
** has highest priority, the first one lowest. See also HTBind_getBindings()
** Either of format, encoding, or language can be NULL
** Returns the format, encoding, and language found
*/
PUBLIC BOOL HTBind_getFormat (const char * filename,
HTFormat * format,
HTEncoding * enc,
HTEncoding * cte,
HTLanguage * lang,
double * quality)
{
int sufcnt=0;
char *file=NULL;
#ifdef HT_REENTRANT
char *lasts; /* For strtok_r */
#endif
if (!HTBindings) HTBind_init();
if (*quality < HT_EPSILON)
*quality = 1.0; /* Set to a neutral value */
StrAllocCopy(file, filename);
HTUnEscape(file); /* Unescape the file name */
#ifdef HT_REENTRANT
if (strtok_r(file, HTDelimiters, &lasts)) { /* Do we have any suffixes? */
#else
if (strtok(file, HTDelimiters)) { /* Do we have any suffixes? */
#endif /* HT_REENTRANT */
char *suffix;
#ifdef HT_REENTRANT
while ((suffix=(char*)strtok_r(NULL, HTDelimiters, &lasts)) != NULL) {
#else
while ((suffix=strtok(NULL, HTDelimiters)) != NULL) {
#endif /* HT_REENTRANT */
HTBind *suff=NULL;
int hash;
unsigned char * p;
HTTRACE(BIND_TRACE, "Get Binding. Look for '%s\' " _ suffix);
sufcnt++;
/* Select list from hash table */
for (p=suffix, hash=0; *p; p++) {
hash = (hash * 3 + TOLOWER(*p)) % HT_L_HASH_SIZE;
}
/* Now search list for entries (case or non case sensitive) */
if (HTBindings[hash]) {
HTList *cur = HTBindings[hash];
while ((suff = (HTBind *) HTList_nextObject(cur))) {
if ((HTCaseSen && !strcmp(suff->suffix, suffix)) ||
!strcasecomp(suff->suffix, suffix)) {
HTTRACE(BIND_TRACE, "Found!\n");
if (suff->type && format) *format = suff->type;
if (suff->encoding && enc) *enc = suff->encoding;
if (suff->transfer && cte) *cte = suff->transfer;
if (suff->language && lang) *lang = suff->language;
if (suff->quality > HT_EPSILON)
*quality *= suff->quality;
break;
}
}
}
if (!suff) { /* We don't have this suffix - use default */
HTTRACE(BIND_TRACE, "Not found - use default for \'*.*\'\n");
if (format) *format = unknown_suffix.type;
if (enc) *enc = unknown_suffix.encoding;
if (cte) *cte = unknown_suffix.transfer;
if (lang) *lang = unknown_suffix.language;
*quality = unknown_suffix.quality;
}
} /* while we still have suffixes */
}
if (!sufcnt) { /* No suffix so use default value */
HTTRACE(BIND_TRACE, "Get Binding. No suffix found - using default '%s\'\n" _ filename);
if (format) *format = no_suffix.type;
if (enc) *enc = no_suffix.encoding;
if (cte) *cte = no_suffix.transfer;
if (lang) *lang = no_suffix.language;
*quality = no_suffix.quality;
}
HTTRACE(BIND_TRACE, "Get Binding. Result for '%s\' is: type='%s\', encoding='%s\', cte='%s\', language='%s\' with quality %.2f\n" _
filename _
(format && *format) ? HTAtom_name(*format) : "unknown" _
(enc && *enc) ? HTAtom_name(*enc) : "unknown" _
(cte && *cte) ? HTAtom_name(*cte) : "unknown" _
(lang && *lang) ? HTAtom_name(*lang) : "unknown" _
*quality);
HT_FREE(file);
return YES;
}
PUBLIC BOOL HTAnchor_setLevel (HTParentAnchor * me, HTLevel level)
{
return HTAnchor_addFormatParam(me, "level", HTAtom_name(level));
}
PUBLIC BOOL HTAnchor_setCharset (HTParentAnchor * me, HTCharset charset)
{
return HTAnchor_addFormatParam(me, "charset", HTAtom_name(charset));
}
PUBLIC BOOL HTResponse_setCharset (HTResponse * me, HTCharset charset)
{
return HTResponse_addFormatParam(me, "charset", HTAtom_name(charset));
}
PRIVATE int pumpData (HTStream * me)
{
HTRequest * request = me->request;
HTResponse * response = me->response;
HTFormat format = HTResponse_format(response);
HTList * te = HTResponse_transfer(response);
HTList * ce = HTResponse_encoding(response);
long length = HTResponse_length(response);
HTStream * BlackHole = HTBlackHole();
BOOL savestream = NO;
me->transparent = YES; /* Pump rest of data right through */
/*
** Cache the metainformation in the anchor object by copying
** it from the response object. This we do regardless if
** we have a persistent cache or not as the memory cache will
** use it as well. If we are updating a cache entry using
** byte ranges then we already have the metainformation and
** hence we can ignore the new one as it'd better be the same.
*/
if (!(me->mode & HT_MIME_PARTIAL) &&
HTResponse_isCachable(me->response) != HT_NO_CACHE)
HTAnchor_update(HTRequest_anchor(request), me->response);
/*
** If we asked only to read the header or footer or we used a HEAD
** method then we stop here as we don't expect any body part.
*/
if (me->mode & (HT_MIME_HEADER | HT_MIME_FOOTER) ||
HTRequest_method(request) == METHOD_HEAD) {
HTAlertCallback * cbf = HTAlert_find(HT_PROG_DONE);
if (cbf) (*cbf)(request, HT_PROG_DONE, HT_MSG_NULL, NULL, NULL, NULL);
return HT_LOADED;
}
/*
** If we are paring a 1xx response then return HT_CONTINUE
*/
if (me->mode & HT_MIME_CONT)
return HT_CONTINUE;
/*
** If we get a 101 Protocol Switch then we are done here
** but not done with the response (which we don't know
** how to go about parsing
*/
if (me->mode & HT_MIME_UPGRADE) {
me->hasBody = YES;
return HT_OK;
}
/*
** If there is no content-length, no transfer encoding and no
** content type then we assume that there is no body part in
** the message and we can return HT_LOADED
*/
{
HTHost * host = HTNet_host(me->net);
if (length<0 && te==NULL &&
HTHost_isPersistent(host) && !HTHost_closeNotification(host)) {
if (format != WWW_UNKNOWN) {
HTTRACE(STREAM_TRACE, "MIME Parser. BAD - there seems to be a body but no length. This must be an HTTP/1.0 server pretending that it is HTTP/1.1\n");
HTHost_setCloseNotification(host, YES);
} else {
HTAlertCallback * cbf = HTAlert_find(HT_PROG_DONE);
if (cbf) (*cbf)(request, HT_PROG_DONE, HT_MSG_NULL, NULL, NULL, NULL);
HTTRACE(STREAM_TRACE, "MIME Parser. No body in this message\n");
return HT_LOADED;
}
}
}
/*
** Deal with the body
*/
me->hasBody = YES;
/*
** Handle any Content Type
*/
if (!(me->mode & HT_MIME_PARTIAL) &&
(format != WWW_UNKNOWN || length > 0 || te)) {
HTStream * target;
HTTRACE(STREAM_TRACE, "Building.... C-T stack from %s to %s\n" _
HTAtom_name(format) _
HTAtom_name(me->target_format));
if ((target = HTStreamStack(format, me->target_format,
me->target, request, YES))==BlackHole) {
if (!savestream) {
if (me->target) (*me->target->isa->abort)(me->target, NULL);
me->target = me->save_stream(request, NULL,
format, me->target_format, me->target);
savestream = YES;
}
} else
me->target = target;
}
/*
** Handle any Content Encodings
*/
HTTRACE(STREAM_TRACE, "Building.... Content-Decoding stack\n");
if (ce) {
HTStream * target = HTContentDecodingStack(ce, me->target, request, NULL);
if (target == BlackHole) {
if (!savestream) {
if (me->target) (*me->target->isa->abort)(me->target, NULL);
me->target = me->save_stream(request, NULL,
format, me->target_format, me->target);
savestream = YES;
}
} else
me->target = target;
}
/*
** Can we cache the data object? If so then create a T stream and hook it
** into the stream pipe. We do it before the transfer decoding so that we
** don't have to deal with that when we retrieve the object from cache.
** If we are appending to a cache entry then use a different stream than
** if creating a new entry.
*/
#ifndef NO_CACHE
if (HTCacheMode_enabled()) {
if (me->mode & HT_MIME_PARTIAL) {
HTStream * append = HTStreamStack(WWW_CACHE_APPEND,
me->target_format,
me->target, request, NO);
if (append) me->target = HTTee(me->target, append, NULL);
#if 0
/* @@ JK: change */
if (append) me->target = append;
#endif
} else if (HTResponse_isCachable(me->response) == HT_CACHE_ALL) {
HTStream * cache = HTStreamStack(WWW_CACHE, me->target_format,
me->target, request, NO);
if (cache) me->target = HTTee(me->target, cache, NULL);
}
}
#endif
/*
** Handle any Transfer Encodings
*/
HTTRACE(STREAM_TRACE, "Building.... Transfer-Decoding stack\n");
if (te) {
HTStream * target = HTTransferDecodingStack(te, me->target, request, NULL);
if (target == BlackHole) {
if (!savestream) {
if (me->target) (*me->target->isa->abort)(me->target, NULL);
me->target = me->save_stream(request, NULL,
format, me->target_format, me->target);
savestream = YES;
}
} else
me->target = target;
}
/*
** If we for some reason couldn't find a target stream
*/
if (!me->target) me->target = HTBlackHole();
return HT_OK;
}
/* PRIVATE multi_match()
**
** Check if actual filename (split in parts) fulfills
** the requirements.
*/
PRIVATE BOOL multi_match (char ** required, int m, char ** actual, int n)
{
int c;
int i,j;
#ifdef VMS
for(c=0; c<m && c<n && !strcasecomp(required[c], actual[c]); c++);
#else /* not VMS */
for(c=0; c<m && c<n && !strcmp(required[c], actual[c]); c++);
#endif /* not VMS */
if (!c) return NO; /* Names differ rigth from start */
for(i=c; i<m; i++) {
BOOL found = NO;
for(j=c; j<n; j++) {
#ifdef VMS
if (!strcasecomp(required[i], actual[j])) {
#else /* not VMS */
if (!strcmp(required[i], actual[j])) {
#endif /* not VMS */
found = YES;
break;
}
}
if (!found) return NO;
}
return YES;
}
/*
** Get multi-match possibilities for a given file
** ----------------------------------------------
** On entry:
** path absolute path to one file in a directory,
** may end in .multi.
** On exit:
** returns a list of ContentDesription structures
** describing the mathing files.
**
*/
PRIVATE HTArray * dir_matches (char * path)
{
static char * required[MAX_SUFF+1];
static char * actual[MAX_SUFF+1];
int m,n;
char * dirname = NULL;
char * basename = NULL;
int baselen;
char * multi = NULL;
DIR * dp;
struct dirent * dirbuf;
HTArray * matches = NULL;
#ifdef HT_REENTRANT
struct dirent result; /* For readdir_r */
#endif
if (!path) return NULL;
StrAllocCopy(dirname, path);
basename = (strrchr(dirname, '/'));
if (!basename)
goto dir_match_failed;
*basename++ = 0;
multi = strrchr(basename, MULTI_SUFFIX[0]);
if (multi && !strcasecomp(multi, MULTI_SUFFIX))
*multi = 0;
baselen = strlen(basename);
m = HTSplitFilename(basename, required);
dp = opendir(dirname);
if (!dp) {
HTTRACE(PROT_TRACE, "Warning..... Can't open directory %s\n" _ dirname);
goto dir_match_failed;
}
matches = HTArray_new(VARIANTS);
#ifdef HAVE_READDIR_R_2
while ((dirbuf = (struct dirent *) readdir_r(dp, &result))) {
#elif defined(HAVE_READDIR_R_3)
while (readdir_r(dp, &result, &dirbuf) == 0) {
#else
while ((dirbuf = readdir(dp))) {
#endif /* HAVE_READDIR_R_2 */
if (!dirbuf->d_ino) continue; /* Not in use */
if (!strcmp(dirbuf->d_name,".") ||
!strcmp(dirbuf->d_name,"..") ||
!strcmp(dirbuf->d_name, DEFAULT_DIR_FILE))
continue;
/* Use of direct->namlen is only valid in BSD'ish system */
/* Thanks to [email protected] (Chip Rosenthal) */
/* if ((int)(dirbuf->d_namlen) >= baselen) { */
if ((int) strlen(dirbuf->d_name) >= baselen) {
n = HTSplitFilename(dirbuf->d_name, actual);
if (multi_match(required, m, actual, n)) {
HTContentDescription * cd;
if ((cd = (HTContentDescription *)
HT_CALLOC(1, sizeof(HTContentDescription))) == NULL)
HT_OUTOFMEM("dir_matches");
if (HTBind_getFormat(dirbuf->d_name,
&cd->content_type,
&cd->content_encoding,
&cd->content_transfer,
&cd->content_language,
&cd->quality)) {
if (cd->content_type) {
if ((cd->filename = (char *) HT_MALLOC(strlen(dirname) + 2 + strlen(dirbuf->d_name))) == NULL)
HT_OUTOFMEM("dir_matches");
sprintf(cd->filename, "%s/%s", dirname, dirbuf->d_name);
HTArray_addObject(matches, (void *) cd);
} else {
HT_FREE(cd);
}
} else {
HT_FREE(cd);
}
}
}
}
closedir(dp);
dir_match_failed:
HT_FREE(dirname);
return matches;
}
/*
** Get the best match for a given file
** -----------------------------------
** On entry:
** req->conversions accepted content-types
** req->encodings accepted content-transfer-encodings
** req->languages accepted content-languages
** path absolute pathname of the filename for
** which the match is desired.
** On exit:
** returns a newly allocated absolute filepath.
*/
PRIVATE char * HTGetBest (HTRequest * req, char * path)
{
HTArray * variants = NULL;
char * representation = NULL;
if (!path || !*path) return NULL;
if ((variants = dir_matches(path)) == NULL) {
HTTRACE(PROT_TRACE, "No matches.. for \"%s\"\n" _ path);
return NULL;
}
#ifdef HTDEBUG
if (PROT_TRACE) {
void ** data;
HTContentDescription * cd = HTArray_firstObject(variants, data);
HTTRACE(PROT_TRACE, "Multi....... Possibilities for \"%s\"\n" _ path);
HTTRACE(PROT_TRACE, " QUALITY CONTENT-TYPE LANGUAGE ENCODING FILE\n");
while (cd) {
HTTRACE(PROT_TRACE, " %.4f %-20.20s %-8.8s %-10.10s %s\n" _
cd->quality _
cd->content_type ?HTAtom_name(cd->content_type) :"-\t" _
cd->content_language?HTAtom_name(cd->content_language):"-" _
cd->content_encoding?HTAtom_name(cd->content_encoding):"-" _
cd->filename ?cd->filename :"-");
cd = (HTContentDescription *) HTArray_nextObject(variants, data);
}
}
#endif /* HTDEBUG */
/*
** Finally get the best variant which is readable
*/
if (HTRank(req, variants)) {
void ** data;
HTContentDescription * cd = HTArray_firstObject(variants, data);
while (cd) {
if (cd->filename) {
if (access(cd->filename, R_OK) != -1)
StrAllocCopy(representation, cd->filename);
else HTTRACE(PROT_TRACE, "Multi....... `%s\' is not readable\n" _
cd->filename);
}
HT_FREE(cd->filename);
HT_FREE(cd);
cd = (HTContentDescription *) HTArray_nextObject(variants, data);
}
}
HTArray_delete(variants);
return representation;
}
PRIVATE int welcome_value (char * name)
{
HTList * cur = welcome_names;
char * welcome;
int v = 0;
while ((welcome = (char*)HTList_nextObject(cur))) {
v++;
if (!strcmp(welcome,name)) return v;
}
return 0;
}
PRIVATE char * get_best_welcome (char * path)
{
char * best_welcome = NULL;
int best_value = 0;
DIR * dp;
struct dirent * dirbuf;
char * last = strrchr(path, '/');
if (!welcome_names) {
HTAddWelcome("Welcome.html");
HTAddWelcome("welcome.html");
#if 0
HTAddWelcome("Index.html");
#endif
HTAddWelcome("index.html");
}
if (last && last!=path) *last = 0;
dp = opendir(path);
if (last && last!=path) *last='/';
if (!dp) {
HTTRACE(PROT_TRACE, "Warning..... Can't open directory %s\n" _ path);
return NULL;
}
while ((dirbuf = readdir(dp))) {
if (!dirbuf->d_ino ||
!strcmp(dirbuf->d_name,".") ||
!strcmp(dirbuf->d_name,"..") ||
!strcmp(dirbuf->d_name, DEFAULT_DIR_FILE))
continue;
else {
int v = welcome_value(dirbuf->d_name);
if (v > best_value) {
best_value = v;
StrAllocCopy(best_welcome, dirbuf->d_name);
}
}
}
closedir(dp);
if (best_welcome) {
char * welcome;
if ((welcome = (char *) HT_MALLOC(strlen(path) + strlen(best_welcome)+2)) == NULL)
HT_OUTOFMEM("get_best_welcome");
sprintf(welcome, "%s%s%s", path, last ? "" : "/", best_welcome);
HT_FREE(best_welcome);
HTTRACE(PROT_TRACE, "Welcome..... \"%s\"\n" _ welcome);
return welcome;
}
return NULL;
}