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ncsa-mosaic/libwww2/HTMIME.c

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init
2010-03-08 04:55:21 -06:00
/* MIME Message Parse HTMIME.c
** ==================
**
** This is RFC 1341-specific code.
** The input stream pushed into this parser is assumed to be
** stripped on CRs, ie lines end with LF, not CR LF.
** (It is easy to change this except for the body part where
** conversion can be slow.)
**
** History:
** Feb 92 Written Tim Berners-Lee, CERN
**
*/
#include "../config.h"
#include "HTMIME.h" /* Implemented here */
#include "HTAlert.h"
#include "HTFile.h"
#include "tcp.h"
#include "../libnut/str-tools.h"
#if defined(KRB4) || defined(KRB5) /* ADC, 6/28/95 */
#define HAVE_KERBEROS
#endif
/*SWP*/
#include "HTAAUtil.h"
extern int securityType;
#ifndef DISABLE_TRACE
extern int www2Trace;
#endif
/* This is UGLY. */
char *redirecting_url = NULL;
/* This is almost as ugly. */
extern int loading_length;
extern int noLength;
/* As is this - AF */
char *HTTP_last_modified;
char *HTTP_expires;
/* MIME Object
** -----------
*/
typedef enum _MIME_state
{
BEGINNING_OF_LINE,
CONTENT_,
CONTENT_T,
CONTENT_TRANSFER_ENCODING,
CONTENT_TYPE,
CONTENT_ENCODING,
CONTENT_LENGTH,
EXPIRES,
E,
EX,
L,
LOCATION,
LAST_MODIFIED,
EXTENSION,
SKIP_GET_VALUE, /* Skip space then get value */
GET_VALUE, /* Get value till white space */
JUNK_LINE, /* Ignore the rest of this folded line */
NEWLINE, /* Just found a LF .. maybe continuation */
CHECK, /* check against check_pointer */
MIME_TRANSPARENT, /* put straight through to target ASAP! */
MIME_IGNORE, /* ignore entire file */
/* TRANSPARENT and IGNORE are defined as stg else in _WINDOWS */
#ifdef HAVE_KERBEROS
WWW_AUTHENTICATE, /* for kerberos mutual authentication */
#endif
} MIME_state;
#define VALUE_SIZE 8192 /* @@@@@@@ Arbitrary? */
struct _HTStream
{
WWW_CONST HTStreamClass * isa;
MIME_state state; /* current state */
MIME_state if_ok; /* got this state if match */
MIME_state field; /* remember which field */
MIME_state fold_state; /* state on a fold */
WWW_CONST char * check_pointer; /* checking input */
char * value_pointer; /* storing values */
char value[VALUE_SIZE];
HTParentAnchor * anchor; /* Given on creation */
HTStream * sink; /* Given on creation */
char * boundary; /* For multipart */
HTFormat encoding; /* Content-Transfer-Encoding */
char * compression_encoding;
int content_length;
int header_length; /* for io accounting -bjs */
HTFormat format; /* Content-Type */
HTStream * target; /* While writing out */
HTStreamClass targetClass;
HTAtom * targetRep; /* Converting into? */
char * location;
char * expires;
char * last_modified;
int interrupted;
};
/*_________________________________________________________________________
**
** A C T I O N R O U T I N E S
*/
/* Character handling
** ------------------
**
** This is a FSM parser which is tolerant as it can be of all
** syntax errors. It ignores field names it does not understand,
** and resynchronises on line beginnings.
*/
PRIVATE void HTMIME_put_character ARGS2(HTStream *, me, char, c)
{
#ifdef HAVE_KERBEROS
static int got_kerb = 0;
static HTAAScheme kscheme;
extern int validate_kerberos_server_auth();
#endif
if(me->state==MIME_TRANSPARENT){
(*me->targetClass.put_character)(me->target, c); /* MUST BE FAST */
return;
} else {
me->header_length ++; /* bjs - update this first */
}
switch(me->state)
{
case MIME_IGNORE:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[HTMIME_put_character] Got MIME_IGNORE; returning...\n");
#endif
return;
/* case MIME_TRANSPARENT:*/
case NEWLINE:
if (c != '\n' && WHITE(c))
{
/* Folded line */
me->state = me->fold_state; /* pop state before newline */
break;
}
/* else Falls through */
case BEGINNING_OF_LINE:
switch(c)
{
case 'c':
case 'C':
me->check_pointer = "ontent-";
me->if_ok = CONTENT_;
me->state = CHECK;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Got C at beginning of line; checking for 'ontent-'\n");
#endif
break;
/* SWP -- 7/10/95 */
case 'E': /* Extension or Expires */
case 'e':
{
me->state = E;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Got E at beginning of line; checking for 'X'\n");
#endif
}
break;
case 'l':
case 'L':
me->state = L;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Got L at beginning of line\n");
#endif
break;
#ifdef HAVE_KERBEROS
/* for kerberos mutual authentication */
case 'w':
case 'W':
me->check_pointer = "ww-authenticate:";
me->if_ok = WWW_AUTHENTICATE;
me->state = CHECK;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf(stderr,
"[MIME] Got W at beginning of line; checking for 'ww-authenticate'\n");
#endif
break;
#endif
case '\n': /* Blank line: End of Header! */
{
int compressed = COMPRESSED_NOT;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"HTMIME: DOING STREAMSTACK: MIME content type is %s, converting to %s\n",
HTAtom_name(me->format), HTAtom_name(me->targetRep));
#endif
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
" Compression encoding '%s'\n",
(!me->compression_encoding || !*me->compression_encoding?"Undefined":me->compression_encoding));
#endif
if (me->compression_encoding)
{
if (strcmp (me->compression_encoding, "x-compress") == 0)
{
compressed = COMPRESSED_BIGZ;
}
else if (strcmp (me->compression_encoding, "x-gzip") == 0)
{
compressed = COMPRESSED_GNUZIP;
}
else
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "HTMIME: Unknown compression_encoding '%s'\n",
me->compression_encoding);
#endif
}
}
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "HTMIME: compressed == %d\n", compressed);
#endif
me->target = HTStreamStack(me->format, me->targetRep, compressed,
me->sink, me->anchor);
if (!me->target)
{
#ifndef DISABLE_TRACE
if (www2Trace)
{
fprintf(stderr, "MIME: Can't translate! ** \n");
fprintf(stderr, "HTMIME: Defaulting to HTML.\n");
}
#endif
/* Default to HTML. */
me->target = HTStreamStack(HTAtom_for("text/html"),
me->targetRep,
compressed,
me->sink,
me->anchor);
}
if (me->target)
{
me->targetClass = *me->target->isa;
/* Check for encoding and select state from there @@ */
/* From now push straigh through */
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[MIME] Entering MIME_TRANSPARENT\n");
#endif
me->state = MIME_TRANSPARENT;
/* bjs note: header is now completely read */
}
else
{
/* This is HIGHLY EVIL -- the browser WILL BREAK
if it ever reaches here. Thus the default to
HTML above, which should always happen... */
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "MIME: HIT HIGHLY EVIL!!! ***\n");
#endif
me->state = MIME_IGNORE; /* What else to do? */
}
}
break;
default:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[MIME] Got nothing at beginning of line; bleah.\n");
#endif
goto bad_field_name;
break;
} /* switch on character */
break;
case CHECK: /* Check against string */
if (TOLOWER(c) == *(me->check_pointer)++)
{
if (!*me->check_pointer)
me->state = me->if_ok;
}
else
{ /* Error */
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf(stderr,
"HTMIME: Bad character `%c' found where `%s' expected\n",
c, me->check_pointer - 1);
#endif
goto bad_field_name;
}
break;
case CONTENT_:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] in case CONTENT_\n");
#endif
switch(c)
{
case 't':
case 'T':
me->state = CONTENT_T;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was CONTENT_, found T, state now CONTENT_T\n");
#endif
break;
case 'e':
case 'E':
me->check_pointer = "ncoding:";
me->if_ok = CONTENT_ENCODING;
me->state = CHECK;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was CONTENT_, found E, checking for 'ncoding:'\n");
#endif
break;
case 'l':
case 'L':
me->check_pointer = "ength:";
me->if_ok = CONTENT_LENGTH;
me->state = CHECK;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was CONTENT_, found L, checking for 'ength:'\n");
#endif
break;
default:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was CONTENT_, found nothing; bleah\n");
#endif
goto bad_field_name;
} /* switch on character */
break;
case CONTENT_T:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] in case CONTENT_T\n");
#endif
switch(c)
{
case 'r':
case 'R':
me->check_pointer = "ansfer-encoding:";
me->if_ok = CONTENT_TRANSFER_ENCODING;
me->state = CHECK;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was CONTENT_T; going to check for ansfer-encoding:\n");
#endif
break;
case 'y':
case 'Y':
me->check_pointer = "pe:";
me->if_ok = CONTENT_TYPE;
me->state = CHECK;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[MIME] Was CONTENT_T; going to check for pe:\n");
#endif
break;
default:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was CONTENT_T; found nothing; bleah\n");
#endif
goto bad_field_name;
} /* switch on character */
break;
case L:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] in case L\n");
#endif
switch(c)
{
case 'a':
case 'A':
me->check_pointer = "st-modified:";
me->if_ok = LAST_MODIFIED;
me->state = CHECK;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was L; going to check for st-modified:\n");
#endif
break;
case 'o':
case 'O':
me->check_pointer = "cation:";
me->if_ok = LOCATION;
me->state = CHECK;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was L; going to check for ocation:\n");
#endif
break;
default:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was L; found nothing; bleah\n");
#endif
goto bad_field_name;
} /* switch on character */
break;
case E:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] in case E\n");
#endif
switch(c)
{
case 'x':
case 'X':
me->state = EX;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was EX; going to check for EXP or EXT:\n");
#endif
break;
default:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was E; found nothing; bleah\n");
#endif
goto bad_field_name;
} /* switch on character */
break;
case EX:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] in case EX\n");
#endif
switch(c)
{
case 'p':
case 'P':
me->check_pointer = "ires";
me->if_ok = EXPIRES;
me->state = CHECK;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was EXP; going to check for 'ires'\n");
#endif
break;
case 't':
case 'T':
me->check_pointer = "ension:";
me->if_ok = EXTENSION;
me->state = CHECK;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was EXT; going to check for 'ension:'\n");
#endif
break;
default:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME] Was EX; found nothing; bleah\n");
#endif
goto bad_field_name;
} /* switch on character */
break;
#ifdef HAVE_KERBEROS
case WWW_AUTHENTICATE:
#endif
case EXTENSION:
case CONTENT_TYPE:
case CONTENT_TRANSFER_ENCODING:
case CONTENT_ENCODING:
case CONTENT_LENGTH:
case LOCATION:
case EXPIRES:
case LAST_MODIFIED:
me->field = me->state; /* remember it */
me->state = SKIP_GET_VALUE;
/* Fall through! (no break!) */
case SKIP_GET_VALUE:
if (c == '\n')
{
me->fold_state = me->state;
me->state = NEWLINE;
break;
}
if (WHITE(c))
break; /* Skip white space */
me->value_pointer = me->value;
me->state = GET_VALUE;
/* Fall through to store first character */
case GET_VALUE:
if (WHITE(c))
{
/* End of field */
*me->value_pointer = 0;
switch (me->field)
{
case CONTENT_TYPE:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[MIME_put_char] Got content-type value '%s'\n", me->value);
#endif
/* Lowercase it. */
{
char *tmp;
// SAM
if((tmp = strchr(me->value, ';'))) *tmp = '\0';
// SAM
for (tmp = me->value; *tmp; tmp++)
*tmp = TOLOWER (*tmp);
}
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[MIME_put_char] Lowercased to '%s'\n", me->value);
#endif
me->format = HTAtom_for(me->value);
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[MIME_put_char] Got content-type value atom 0x%08x\n",
me->format);
#endif
break;
case CONTENT_TRANSFER_ENCODING:
me->encoding = HTAtom_for(me->value);
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME_put_char] Picked up transfer_encoding '%s'\n",
me->encoding);
#endif
break;
case CONTENT_ENCODING:
me->compression_encoding = strdup (me->value);
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME_put_char] Picked up compression encoding '%s'\n",
me->compression_encoding);
#endif
break;
case CONTENT_LENGTH:
me->content_length = atoi (me->value);
/* This is TEMPORARY. */
loading_length = me->content_length;
noLength=0;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[MIME_put_char] Picked up content length '%d'\n",
me->content_length);
#endif
break;
case EXPIRES:
if (me->value_pointer < me->value + VALUE_SIZE - 1)
{
*me->value_pointer++ = c;
*me->value_pointer = 0;
}
else
{
goto value_too_long;
}
if (me->expires)
free(me->expires);
me->expires = strdup(me->value);
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf(stderr,
"[MIME_put_char] Picked up expires '%s'\n", me->value);
#endif
break;
case LAST_MODIFIED:
if (me->value_pointer < me->value + VALUE_SIZE - 1)
{
*me->value_pointer++ = c;
*me->value_pointer = 0;
}
else
{
goto value_too_long;
}
if (me->last_modified)
free(me->last_modified);
me->last_modified = strdup(me->value);
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf(stderr,
"[MIME_put_char] Picked up last modified '%s'\n", me->value);
#endif
break;
case LOCATION:
me->location = me->value;
redirecting_url = strdup (me->location);
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf(stderr,
"[MIME_put_char] Picked up location '%s'\n", me->location);
#endif
break;
#ifdef HAVE_KERBEROS
case WWW_AUTHENTICATE:
/*
* msg from server looks like:
* WWW-Authenticate: KerberosV4 [strified ktext]
* also allowed: KerberosV5, KerbV4-Encrypted, KerbV5-Encrypted
*
* This code is ugly: we have to keep this got_kerb static around because
* the FSM isn't really designed to have fields with values that
* include whitespace. got_kerb tells us that we've been in this code
* before, and that we saw the word "kerberos"
*/
#ifndef DISABLE_TRACE
if (www2Trace) fprintf(stderr, "[MIME put char] picked up Auth. arg '%s'\n",
me->value);
#endif
if (got_kerb) {
validate_kerberos_server_auth(kscheme, me->value);
got_kerb = 0; /* reset kerb state */
me->state = me->field;
} else if (!my_strncasecmp(me->value, "kerb", 4)) {
if (0) { /* just to get things started */
}
#ifdef KRB4
else if (!my_strncasecmp(me->value, "KerberosV4", 10)) {
kscheme = HTAA_KERBEROS_V4;
got_kerb = 1;
me->state = SKIP_GET_VALUE;
}
#endif
#ifdef KRB5
else if (!my_strncasecmp(me->value, "KerberosV5", 10)) {
kscheme = HTAA_KERBEROS_V5;
got_kerb = 1;
me->state = SKIP_GET_VALUE;
}
#endif
else {
fprintf(stderr, "Unrecognized field in WWW-Authenticate header\n");
me->state = me->field;
}
}
break;
#endif
case EXTENSION:
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[MIME_put_char] Got Extension value '%s'\n", me->value);
#endif
/* Lowercase it. */
{
char *tmp;
for (tmp = me->value; *tmp; tmp++)
*tmp = TOLOWER (*tmp);
}
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[MIME_put_char] Lowercased to '%s'\n", me->value);
#endif
switch(*(me->value)) {
case 'd': /*Domain*/
if (!strcmp(me->value,"domain-restricted")) {
securityType=HTAA_DOMAIN;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[MIME_put_char] Domain restricted extension header found.\n");
#endif
break;
}
/*fall through*/
default: /*Unknown*/
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[MIME_put_char] Unknown extension header: '%s'\n", me->value);
#endif
me->state=me->field;
break;
}
break;
default: /* Should never get here */
break;
}
}
else
{
if (me->value_pointer < me->value + VALUE_SIZE - 1)
{
*me->value_pointer++ = c;
break;
}
else
{
goto value_too_long;
}
}
/* Fall through */
case JUNK_LINE:
if (c == '\n')
{
me->state = NEWLINE;
me->fold_state = me->state;
}
break;
} /* switch on state*/
return;
value_too_long:
#ifndef DISABLE_TRACE
if (www2Trace) fprintf(stderr,
"HTMIME: *** Syntax error. (string too long)\n");
#endif
bad_field_name: /* Ignore it */
me->state = JUNK_LINE;
return;
}
/* String handling
** ---------------
**
** Strings must be smaller than this buffer size.
*/
PRIVATE void HTMIME_put_string ARGS2(HTStream *, me, WWW_CONST char*, s)
{
WWW_CONST char * p;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[HTMIME_put_string] Putting '%s'\n", s);
#endif
if (me->state == MIME_TRANSPARENT) /* Optimisation */
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[HTMIME_put_string] Doing transparent put_string\n");
#endif
(*me->targetClass.put_string)(me->target,s);
}
else if (me->state != MIME_IGNORE)
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[HTMIME_put_string] Doing char-by-char put_character\n");
#endif
for (p=s; *p; p++)
HTMIME_put_character(me, *p);
}
else
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[HTMIME_put_string] DOING NOTHING!\n");
#endif
}
return;
}
/* Buffer write. Buffers can (and should!) be big.
** ------------
*/
PRIVATE void HTMIME_write ARGS3(HTStream *, me, WWW_CONST char*, s, int, l)
{
WWW_CONST char * p;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[HTMIME_write] Putting %d bytes\n", l);
#endif
if (me->state == MIME_TRANSPARENT) /* Optimisation */
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[HTMIME_write] Doing transparent put_block\n");
#endif
(*me->targetClass.put_block)(me->target, s, l);
}
else if (me->state != MIME_IGNORE)
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[HTMIME_write] Doing char-by-char put_character\n");
#endif
for (p=s; p < s+l; p++)
HTMIME_put_character(me, *p);
}
else
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[HTMIME_write] DOING NOTHING!\n");
#endif
}
return;
}
/* Free an HTML object
** -------------------
**
*/
PRIVATE void HTMIME_free ARGS1(HTStream *, me)
{
if (!me->target)
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[HTMIME_free] Caught case where we didn't get a target.\n");
#endif
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, " me 0x%08x, me->target 0x%08x\n", me, me->target);
#endif
me->format = HTAtom_for ("text/html");
me->target = HTStreamStack(me->format, me->targetRep, 0,
me->sink, me->anchor);
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, " me->target->isa 0x%08x\n", me->target->isa);
#endif
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, " *me->target->isa 0x%08x\n", *me->target->isa);
#endif
me->targetClass = *me->target->isa;
(*me->targetClass.put_string) (me->target, "<H1>ERROR IN HTTP/1.0 RESPONSE</H1> The remote server returned a HTTP/1.0 response that Mosaic's MIME parser could not understand. Please contact the server maintainer.<P> Sorry for the inconvenience,<P> <ADDRESS>The Management</ADDRESS>");
securityType=HTAA_UNKNOWN;
}
if (me->target)
(*me->targetClass.free)(me->target);
if (me->expires)
{
char *p;
if (HTTP_expires)
free(HTTP_expires);
HTTP_expires = me->expires;
for (p = HTTP_expires + strlen(HTTP_expires) - 1;
p > HTTP_expires && isspace(*p); p--)
{
*p = '\0';
}
}
if (me->last_modified)
{
char *p;
if (HTTP_last_modified)
free(HTTP_last_modified);
HTTP_last_modified = me->last_modified;
for (p = HTTP_last_modified + strlen(HTTP_last_modified) - 1;
p > HTTP_last_modified && isspace(*p); p--)
{
*p = '\0';
}
}
free(me);
return;
}
/* End writing
*/
PRIVATE void HTMIME_end_document ARGS1(HTStream *, me)
{
if (me->target)
(*me->targetClass.end_document)(me->target);
}
PRIVATE void HTMIME_handle_interrupt ARGS1(HTStream *, me)
{
me->interrupted = 1;
/* Propagate interrupt message down. */
if (me->target)
(*me->targetClass.handle_interrupt)(me->target);
return;
}
/* Structured Object Class
** -----------------------
*/
PUBLIC WWW_CONST HTStreamClass HTMIME =
{
"MIMEParser",
HTMIME_free,
HTMIME_end_document,
HTMIME_put_character, HTMIME_put_string,
HTMIME_write,
HTMIME_handle_interrupt
};
/* Subclass-specific Methods
** -------------------------
*/
PUBLIC HTStream* HTMIMEConvert ARGS5(
HTPresentation *, pres,
HTParentAnchor *, anchor,
HTStream *, sink,
HTFormat, format_in,
int, compressed)
{
HTStream* me;
me = malloc(sizeof(*me));
me->isa = &HTMIME;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[HTMIMEConvert] HELLO!\n");
#endif
me->sink = sink;
me->anchor = anchor;
me->target = NULL;
me->state = BEGINNING_OF_LINE;
me->format = WWW_PLAINTEXT;
me->targetRep = pres->rep_out;
me->boundary = 0; /* Not set yet */
me->location = 0;
me->interrupted = 0;
me->encoding = 0;
me->compression_encoding = 0;
me->content_length = -1;
me->header_length = 0; /* bjs - to allow differentiation between
content and header for read length */
me->expires = 0;
me->last_modified = 0;
return me;
}
/* bjs - a kludge for HTFormat.c */
int HTMIME_get_header_length(HTStream *me)
{
if(me->isa != &HTMIME) return 0; /* in case we screw up */
return me->header_length;
}
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