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-rw-r--r--camel/camel-mime-parser.c1248
1 files changed, 0 insertions, 1248 deletions
diff --git a/camel/camel-mime-parser.c b/camel/camel-mime-parser.c
deleted file mode 100644
index 2f1d9fd70d..0000000000
--- a/camel/camel-mime-parser.c
+++ /dev/null
@@ -1,1248 +0,0 @@
-/*
- * Copyright (C) 2000 Helix Code Inc.
- *
- * Authors: Michael Zucchi <notzed@helixcode.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public License
- * as published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-/* What should hopefully be a fast mail parser */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-#include <string.h>
-
-#include <stdio.h>
-#include <errno.h>
-
-#include <unicode.h>
-
-#include "camel-mime-parser.h"
-#include "camel-mime-utils.h"
-#include "camel-mime-filter.h"
-#include "camel-stream.h"
-#include "camel-seekable-stream.h"
-
-#define r(x)
-#define h(x)
-#define c(x)
-#define d(x)
-
-#define SCAN_BUF 4096 /* size of read buffer */
-#define SCAN_HEAD 128 /* headroom guaranteed to be before each read buffer */
-
-/* a little hacky, but i couldn't be bothered renaming everything */
-#define _header_scan_state _CamelMimeParserPrivate
-#define _PRIVATE(o) (((CamelMimeParser *)(o))->priv)
-
-struct _header_scan_state {
-
- /* global state */
-
- enum _header_state state;
-
- /* for building headers during scanning */
- char *outbuf;
- char *outptr;
- char *outend;
-
- int fd; /* input for a fd input */
- CamelStream *stream; /* or for a stream */
-
- /* for scanning input buffers */
- char *realbuf; /* the real buffer, SCAN_HEAD*2 + SCAN_BUF bytes */
- char *inbuf; /* points to a subset of the allocated memory, the underflow */
- char *inptr; /* (upto SCAN_HEAD) is for use by filters so they dont copy all data */
- char *inend;
-
- int atleast;
-
- int seek; /* current offset to start of buffer */
- int unstep; /* how many states to 'unstep' (repeat the current state) */
-
- int midline; /* are we mid-line interrupted? */
- int scan_from; /* do we care about From lines? */
-
- int start_of_from; /* where from started */
- int start_of_headers; /* where headers started from the last scan */
-
- int header_start; /* start of last header, or -1 */
-
- struct _header_scan_stack *top_part; /* top of message header */
- int top_start; /* offset of start */
-
- struct _header_scan_stack *pending; /* if we're pending part info, from the wrong part end */
-
- /* filters to apply to all content before output */
- int filterid; /* id of next filter */
- struct _header_scan_filter *filters;
-
- /* per message/part info */
- struct _header_scan_stack *parts;
-
-};
-
-struct _header_scan_stack {
- struct _header_scan_stack *parent;
-
- enum _header_state savestate; /* state at invocation of this part */
-
- struct _header_raw *headers; /* headers for this part */
-
- struct _header_content_type *content_type;
-
- char *boundary; /* for multipart/ * boundaries, including leading -- and trailing -- for the final part */
- int boundarylen; /* length of boundary, including leading -- */
-};
-
-struct _header_scan_filter {
- struct _header_scan_filter *next;
- int id;
- CamelMimeFilter *filter;
-};
-
-static void folder_scan_step(struct _header_scan_state *s, char **databuffer, int *datalength);
-static int folder_scan_init_with_fd(struct _header_scan_state *s, int fd);
-static int folder_scan_init_with_stream(struct _header_scan_state *s, CamelStream *stream);
-static struct _header_scan_state *folder_scan_init(void);
-static void folder_scan_close(struct _header_scan_state *s);
-static struct _header_scan_stack *folder_scan_content(struct _header_scan_state *s, int *lastone, char **data, int *length);
-static struct _header_scan_stack *folder_scan_header(struct _header_scan_state *s, int *lastone);
-static int folder_scan_skip_line(struct _header_scan_state *s);
-static off_t folder_seek(struct _header_scan_state *s, off_t offset, int whence);
-static off_t folder_tell(struct _header_scan_state *s);
-
-static void camel_mime_parser_class_init (CamelMimeParserClass *klass);
-static void camel_mime_parser_init (CamelMimeParser *obj);
-
-static char *states[] = {
- "HSCAN_INITIAL",
- "HSCAN_FROM", /* got 'From' line */
- "HSCAN_HEADER", /* toplevel header */
- "HSCAN_BODY", /* scanning body of message */
- "HSCAN_MULTIPART", /* got multipart header */
- "HSCAN_MESSAGE", /* rfc822 message */
-
- "HSCAN_PART", /* part of a multipart */
- "<invalid>",
-
- "HSCAN_EOF", /* end of file */
- "HSCAN_FROM_END",
- "HSCAN_HEAER_END",
- "HSCAN_BODY_END",
- "HSCAN_MULTIPART_END",
- "HSCAN_MESSAGE_END",
-};
-
-static GtkObjectClass *camel_mime_parser_parent;
-
-enum SIGNALS {
- LAST_SIGNAL
-};
-
-static guint signals[LAST_SIGNAL] = { 0 };
-
-guint
-camel_mime_parser_get_type (void)
-{
- static guint type = 0;
-
- if (!type) {
- GtkTypeInfo type_info = {
- "CamelMimeParser",
- sizeof (CamelMimeParser),
- sizeof (CamelMimeParserClass),
- (GtkClassInitFunc) camel_mime_parser_class_init,
- (GtkObjectInitFunc) camel_mime_parser_init,
- (GtkArgSetFunc) NULL,
- (GtkArgGetFunc) NULL
- };
-
- type = gtk_type_unique (gtk_object_get_type (), &type_info);
- }
-
- return type;
-}
-
-static void
-finalise(GtkObject *o)
-{
- struct _header_scan_state *s = _PRIVATE(o);
-
- folder_scan_close(s);
-
- ((GtkObjectClass *)camel_mime_parser_parent)->finalize (o);
-}
-
-static void
-camel_mime_parser_class_init (CamelMimeParserClass *klass)
-{
- GtkObjectClass *object_class = (GtkObjectClass *) klass;
-
- camel_mime_parser_parent = gtk_type_class (gtk_object_get_type ());
-
- object_class->finalize = finalise;
-
- gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);
-}
-
-static void
-camel_mime_parser_init (CamelMimeParser *obj)
-{
- struct _header_scan_state *s;
-
- s = folder_scan_init();
- _PRIVATE(obj) = s;
-}
-
-/**
- * camel_mime_parser_new:
- *
- * Create a new CamelMimeParser object.
- *
- * Return value: A new CamelMimeParser widget.
- **/
-CamelMimeParser *
-camel_mime_parser_new (void)
-{
- CamelMimeParser *new = CAMEL_MIME_PARSER ( gtk_type_new (camel_mime_parser_get_type ()));
- return new;
-}
-
-
-int
-camel_mime_parser_filter_add(CamelMimeParser *m, CamelMimeFilter *mf)
-{
- struct _header_scan_state *s = _PRIVATE(m);
- struct _header_scan_filter *f, *new;
-
- new = g_malloc(sizeof(*new));
- new->filter = mf;
- new->id = s->filterid++;
- if (s->filterid == -1)
- s->filterid++;
- new->next = 0;
- gtk_object_ref((GtkObject *)mf);
-
- /* yes, this is correct, since 'next' is the first element of the struct */
- f = (struct _header_scan_filter *)&s->filters;
- while (f->next)
- f = f->next;
- f->next = new;
- return new->id;
-}
-
-void
-camel_mime_parser_filter_remove(CamelMimeParser *m, int id)
-{
- struct _header_scan_state *s = _PRIVATE(m);
- struct _header_scan_filter *f, *old;
-
- f = (struct _header_scan_filter *)&s->filters;
- while (f && f->next) {
- old = f->next;
- if (old->id == id) {
- gtk_object_unref((GtkObject *)old->filter);
- f->next = old->next;
- g_free(old);
- /* there should only be a single matching id, but
- scan the whole lot anyway */
- }
- f = f->next;
- }
-}
-
-const char *
-camel_mime_parser_header(CamelMimeParser *m, const char *name, int *offset)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- if (s->parts &&
- s->parts->headers) {
- return header_raw_find(&s->parts->headers, name, offset);
- }
- return NULL;
-}
-
-struct _header_raw *
-camel_mime_parser_headers_raw(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- if (s->parts)
- return s->parts->headers;
- return NULL;
-}
-
-int
-camel_mime_parser_init_with_fd(CamelMimeParser *m, int fd)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- return folder_scan_init_with_fd(s, fd);
-}
-
-int
-camel_mime_parser_init_with_stream(CamelMimeParser *m, CamelStream *stream)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- return folder_scan_init_with_stream(s, stream);
-}
-
-void
-camel_mime_parser_scan_from(CamelMimeParser *m, int scan_from)
-{
- struct _header_scan_state *s = _PRIVATE(m);
- s->scan_from = scan_from;
-}
-
-struct _header_content_type *
-camel_mime_parser_content_type(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- /* FIXME: should this search up until its found the 'right'
- content-type? can it? */
- if (s->parts)
- return s->parts->content_type;
- return NULL;
-}
-
-void camel_mime_parser_unstep(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- s->unstep++;
-}
-
-enum _header_state
-camel_mime_parser_step(CamelMimeParser *m, char **databuffer, int *datalength)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- d(printf("OLD STATE: '%s' :\n", states[s->state]));
-
- if (s->unstep <= 0)
- folder_scan_step(s, databuffer, datalength);
- else
- s->unstep--;
-
- d(printf("NEW STATE: '%s' :\n", states[s->state]));
-
- return s->state;
-}
-
-off_t camel_mime_parser_tell(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- return folder_tell(s);
-}
-
-off_t camel_mime_parser_tell_start_headers(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- return s->start_of_headers;
-}
-
-off_t camel_mime_parser_tell_start_from(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- return s->start_of_from;
-}
-
-off_t camel_mime_parser_seek(CamelMimeParser *m, off_t off, int whence)
-{
- struct _header_scan_state *s = _PRIVATE(m);
- return folder_seek(s, off, whence);
-}
-
-enum _header_state camel_mime_parser_state(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
- return s->state;
-}
-
-CamelStream *camel_mime_parser_stream(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
- return s->stream;
-}
-
-int camel_mime_parser_fd(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
- return s->fd;
-}
-
-/* ********************************************************************** */
-/* Implementation */
-/* ********************************************************************** */
-
-/* read the next bit of data, ensure there is enough room 'atleast' bytes */
-static int
-folder_read(struct _header_scan_state *s)
-{
- int len;
- int inoffset;
-
- if (s->inptr<s->inend-s->atleast)
- return s->inend-s->inptr;
-
- /* check for any remaning bytes (under the atleast limit( */
- inoffset = s->inend - s->inptr;
- if (inoffset>0) {
- memcpy(s->inbuf, s->inptr, inoffset);
- }
- if (s->stream) {
- len = camel_stream_read(s->stream, s->inbuf+inoffset, SCAN_BUF-inoffset);
- } else {
- len = read(s->fd, s->inbuf+inoffset, SCAN_BUF-inoffset);
- }
- r(printf("read %d bytes, offset = %d\n", len, inoffset));
- if (len>=0) {
- /* add on the last read block */
- s->seek += s->inptr - s->inbuf;
- s->inptr = s->inbuf;
- s->inend = s->inbuf+len+inoffset;
- r(printf("content = %d '%.*s'\n",s->inend - s->inptr, s->inend - s->inptr, s->inptr));
- }
- r(printf("content = %d '%.*s'\n", s->inend - s->inptr, s->inend - s->inptr, s->inptr));
- return s->inend-s->inptr;
-}
-
-/* return the current absolute position of the data pointer */
-static off_t
-folder_tell(struct _header_scan_state *s)
-{
- return s->seek + (s->inptr - s->inbuf);
-}
-
-/*
- need some way to prime the parser state, so this actually works for
- other than top-level messages
-*/
-static off_t
-folder_seek(struct _header_scan_state *s, off_t offset, int whence)
-{
- off_t newoffset;
- int len;
-
- if (s->stream) {
- if (CAMEL_IS_SEEKABLE_STREAM(s->stream)) {
- /* NOTE: assumes whence seekable stream == whence libc, which is probably
- the case (or bloody well should've been) */
- newoffset = camel_seekable_stream_seek((CamelSeekableStream *)s->stream, offset, whence);
- } else {
- newoffset = -1;
- errno = EINVAL;
- }
- } else {
- newoffset = lseek(s->fd, offset, whence);
- }
- if (newoffset != -1) {
- s->seek = newoffset;
- s->inptr = s->inbuf;
- s->inend = s->inbuf;
- if (s->stream)
- len = camel_stream_read(s->stream, s->inbuf, SCAN_BUF);
- else
- len = read(s->fd, s->inbuf, SCAN_BUF);
- if (len>=0)
- s->inend = s->inbuf+len;
- else
- newoffset = -1;
- }
- return newoffset;
-}
-
-static void
-folder_push_part(struct _header_scan_state *s, struct _header_scan_stack *h)
-{
- h->parent = s->parts;
- s->parts = h;
-}
-
-static void
-folder_pull_part(struct _header_scan_state *s)
-{
- struct _header_scan_stack *h;
-
- h = s->parts;
- if (h) {
- s->parts = h->parent;
- g_free(h->boundary);
- header_raw_clear(&h->headers);
- header_content_type_unref(h->content_type);
- g_free(h);
- } else {
- g_warning("Header stack underflow!\n");
- }
-}
-
-static int
-folder_scan_skip_line(struct _header_scan_state *s)
-{
- int atleast = s->atleast;
- register char *inptr, *inend, c;
- int len;
-
- s->atleast = 1;
-
- while ( (len = folder_read(s)) > 0 && len > s->atleast) { /* ensure we have at least enough room here */
- inptr = s->inptr;
- inend = s->inend-1;
-
- c = -1;
- while (inptr<inend
- && (c = *inptr++)!='\n')
- ;
-
- s->inptr = inptr;
-
- if (c=='\n') {
- s->atleast = atleast;
- return 0;
- }
- }
-
- s->atleast = atleast;
-
- return -1; /* not found */
-}
-
-static struct _header_scan_stack *
-folder_boundary_check(struct _header_scan_state *s, const char *boundary, int *lastone)
-{
- struct _header_scan_stack *part;
- int len = s->atleast-2; /* make sure we dont access past the buffer */
-
- h(printf("checking boundary marker upto %d bytes\n", len));
- part = s->parts;
- while (part) {
- h(printf(" boundary: %s\n", part->boundary));
- h(printf(" against: '%.*s'\n", len, boundary));
- if (part->boundary
- && part->boundarylen <= len
- && memcmp(boundary, part->boundary, part->boundarylen)==0) {
- h(printf("matched boundary: %s\n", part->boundary));
- /* again, make sure we're in range */
- if (part->boundarylen <= len+2) {
- h(printf("checking lastone\n"));
- *lastone = (boundary[part->boundarylen]=='-'
- && boundary[part->boundarylen+1]=='-');
- } else {
- h(printf("not enough room to check last one?\n"));
- *lastone = FALSE;
- }
- /*printf("ok, we found it! : %s \n", (*lastone)?"Last one":"More to come?");*/
- return part;
- }
- part = part->parent;
- }
- return NULL;
-}
-
-static struct _header_scan_stack *
-folder_scan_header(struct _header_scan_state *s, int *lastone)
-{
- int atleast = s->atleast;
- register char *inptr, *inend;
- char *start;
- int len;
- struct _header_scan_stack *part, *overpart = s->parts;
- struct _header_scan_stack *h;
-
- h(printf("scanning first bit\n"));
-
- h = g_malloc0(sizeof(*h));
-
- /* FIXME: this info should be cached ? */
- part = s->parts;
- s->atleast = 5;
- while (part) {
- if (part->boundary)
- s->atleast = MAX(s->atleast, part->boundarylen+2);
- part = part->parent;
- }
-#if 0
- s->atleast = MAX(s->atleast, 5);
- if (s->parts)
- s->atleast = MAX(s->atleast, s->parts->boundarylen+2);
-#endif
-
- *lastone = FALSE;
-retry:
-
- while ((len = folder_read(s))>0 && len >= s->atleast) { /* ensure we have at least enough room here */
- inptr = s->inptr;
- inend = s->inend-s->atleast;
- start = inptr;
-
- while (inptr<=inend) {
- register int c=-1;
- /*printf(" '%.20s'\n", inptr);*/
-
- if (!s->midline
- && (part = folder_boundary_check(s, inptr, lastone))) {
- if ((s->outptr>s->outbuf) || (inptr-start))
- goto header_truncated; /* may not actually be truncated */
-
- goto normal_exit;
- }
-
- /* goto next line */
- while (inptr<=inend && (c = *inptr++)!='\n')
- ;
-
- /* allocate/append - this wont get executed unless we have *huge* headers,
- and then probably only once */
- {
- register int headerlen = inptr-start;
- register int len = (s->outend - s->outbuf);
- char *outnew;
-
- if (headerlen >= len) {
- len = (len+headerlen)*2+1;
- outnew = g_realloc(s->outbuf, len);
- s->outptr = s->outptr - s->outbuf + outnew;
- s->outbuf = outnew;
- s->outend = outnew + len;
- }
- memcpy(s->outptr, start, headerlen);
- s->outptr += headerlen;
- }
-
- h(printf("outbuf[0] = %02x '%c' oubuf[1] = %02x '%c'\n",
- s->outbuf[0], isprint(s->outbuf[0])?s->outbuf[0]:'.',
- s->outbuf[1], isprint(s->outbuf[1])?s->outbuf[1]:'.'));
-
- if (s->header_start == -1)
- s->header_start = (start-s->inbuf) + s->seek;
-
- if (c!='\n') {
- s->midline = TRUE;
- } else {
- if (!(inptr[0] == ' ' || inptr[0] == '\t')) {
- if (s->outbuf[0] == '\n'
- || (s->outbuf[0] == '\r' && s->outbuf[1]=='\n')) {
- goto header_done;
- }
-
- /* we always have at least _1_ char here ... */
- if (s->outptr[-1] == '\n')
- s->outptr--;
- s->outptr[0] = 0;
-
- d(printf("header %.10s at %d\n", s->outbuf, s->header_start));
-
- header_raw_append_parse(&h->headers, s->outbuf, s->header_start);
- if (inptr[0]=='\n'
- || (inptr[0] == '\r' && inptr[1]=='\n')) {
- inptr++;
- goto header_done;
- }
- s->outptr = s->outbuf;
- s->header_start = -1;
- }
- s->midline = FALSE;
- start = inptr;
- }
- }
- s->inptr = inptr;
- }
-
- /* ok, we're at the end of the data, just make sure we're not missing out some small
- truncated header markers */
- if (overpart) {
- overpart = overpart->parent;
- while (overpart) {
- if (overpart->boundary && (overpart->boundarylen+2) < s->atleast) {
- s->atleast = overpart->boundarylen+2;
- h(printf("Retrying next smaller part ...\n"));
- goto retry;
- }
- overpart = overpart->parent;
- }
- }
-
- if ((s->outptr > s->outbuf) || s->inend > s->inptr) {
- start = s->inptr;
- inptr = s->inend;
- goto header_truncated;
- }
-
- s->atleast = atleast;
-
- return h;
-
-header_truncated:
-
- {
- register int headerlen = inptr-start;
- register int len = (s->outend - s->outbuf);
- char *outnew;
-
- if (headerlen >= len) {
- len = (len+headerlen)*2+1;
- outnew = g_realloc(s->outbuf, len);
- s->outptr = s->outptr - s->outbuf + outnew;
- s->outbuf = outnew;
- s->outend = outnew + len;
- }
- memcpy(s->outptr, start, headerlen);
- s->outptr += headerlen;
- }
- if (s->outptr>s->outbuf && s->outptr[-1] == '\n')
- s->outptr--;
- s->outptr[0] = 0;
-
- if (s->header_start == -1)
- s->header_start = (start-s->inbuf) + s->seek;
-
- if (s->outbuf[0] == '\n'
- || (s->outbuf[0] == '\r' && s->outbuf[1]=='\n')) {
- goto header_done;
- }
-
- header_raw_append_parse(&h->headers, s->outbuf, s->header_start);
-
-header_done:
- part = s->parts;
-
- s->outptr = s->outbuf;
-normal_exit:
- s->inptr = inptr;
- s->atleast = atleast;
- s->header_start = -1;
- return h;
-}
-
-static struct _header_scan_stack *
-folder_scan_content(struct _header_scan_state *s, int *lastone, char **data, int *length)
-{
- int atleast = s->atleast;
- register char *inptr, *inend;
- char *start;
- int len;
- struct _header_scan_stack *part, *overpart = s->parts;
- int already_packed = FALSE;
-
- /*printf("scanning content\n");*/
-
- /* FIXME: this info should be cached ? */
- part = s->parts;
- s->atleast = 5;
- while (part) {
- if (part->boundary) {
- c(printf("boundary: %s\n", part->boundary));
- s->atleast = MAX(s->atleast, part->boundarylen+2);
- }
- part = part->parent;
- }
-/* s->atleast = MAX(s->atleast, 5);*/
-#if 0
- if (s->parts)
- s->atleast = MAX(s->atleast, s->parts->boundarylen+2);
-#endif
- *lastone = FALSE;
-
-retry:
- c(printf("atleast = %d\n", s->atleast));
-
- while ((len = folder_read(s))>0 && len >= s->atleast) { /* ensure we have at least enough room here */
- inptr = s->inptr;
- inend = s->inend-s->atleast;
- start = inptr;
-
- c(printf("inptr = %p, inend = %p\n", inptr, inend));
-
- while (inptr<=inend) {
- if (!s->midline
- && (part = folder_boundary_check(s, inptr, lastone))) {
- if ( (inptr-start) )
- goto content;
-
- goto normal_exit;
- }
- /* goto the next line */
- while (inptr<=inend && (*inptr++)!='\n')
- ;
-
- s->midline = FALSE;
- }
-
- /* *sigh* so much for the beautiful simplicity of the code so far - here we
- have the snot to deal with the nasty end-cases that come from the read-ahead
- buffers we use */
- /* what this does, is if we are somewhere near the end of the buffer,
- force it to the front, and re-read, ensuring we bunch as much together
- as possible, for the final read, without copying too much of the time */
- /* make sure we dont loop forever, but also make sure we try smaller
- boundaries, if there are any, so we dont miss any. */
- /* this is not needed for the header scanner, since it copies its own
- data */
- c(printf("start offset = %d atleast = %d\n", start-s->inbuf, s->atleast));
- if (start > (s->inbuf + s->atleast)) {
- /* force a re-scan of this data */
- s->inptr = start;
- if (already_packed)
- goto smaller_boundary;
- c(printf("near the end, try and bunch things up a bit first\n"));
- already_packed = TRUE;
- } else {
- c(printf("dumping what i've got ...\n"));
- /* what would be nice here, is if that we're at eof, we bunch the last
- little bit in the same content, but i dont think this is easy */
- goto content_mid;
- }
- }
-
- c(printf("length read = %d\n", len));
-smaller_boundary:
-
- /* ok, we're at the end of the data, just make sure we're not missing out some small
- truncated header markers */
- if (overpart) {
- overpart = overpart->parent;
- while (overpart) {
- if (overpart->boundary && (overpart->boundarylen+2) < s->atleast) {
- s->atleast = overpart->boundarylen+2;
- c(printf("Retrying next smaller part ...\n"));
- goto retry;
- }
- overpart = overpart->parent;
- }
- }
-
- if (s->inend > s->inptr) {
- start = s->inptr;
- inptr = s->inend;
- goto content;
- }
-
- *length = 0;
- s->atleast = atleast;
- return NULL;
-
-content_mid:
- s->midline = TRUE;
-content:
- part = s->parts;
-normal_exit:
- s->atleast = atleast;
- s->inptr = inptr;
-
- *data = start;
- *length = inptr-start;
-
-/* printf("got %scontent: %.*s", s->midline?"partial ":"", inptr-start, start);*/
-
- return part;
-}
-
-
-static void
-folder_scan_close(struct _header_scan_state *s)
-{
- g_free(s->realbuf);
- g_free(s->outbuf);
- while (s->parts)
- folder_pull_part(s);
- if (s->fd != -1)
- close(s->fd);
- if (s->stream)
- gtk_object_unref((GtkObject *)s->stream);
- g_free(s);
-}
-
-
-static struct _header_scan_state *
-folder_scan_init(void)
-{
- struct _header_scan_state *s;
-
- s = g_malloc(sizeof(*s));
-
- s->fd = -1;
- s->stream = NULL;
-
- s->outbuf = g_malloc(1024);
- s->outptr = s->outbuf;
- s->outend = s->outbuf+1024;
-
- s->realbuf = g_malloc(SCAN_BUF + SCAN_HEAD*2);
- s->inbuf = s->realbuf + SCAN_HEAD;
- s->inptr = s->inbuf;
- s->inend = s->inbuf;
- s->atleast = 0;
-
- s->seek = 0; /* current character position in file of the last read block */
- s->unstep = 0;
-
- s->header_start = -1;
-
- s->start_of_from = -1;
- s->start_of_headers = -1;
-
- s->midline = FALSE;
- s->scan_from = FALSE;
-
- s->filters = NULL;
- s->filterid = 1;
-
- s->parts = NULL;
-
- s->state = HSCAN_INITIAL;
- return s;
-}
-
-static int
-folder_scan_init_with_fd(struct _header_scan_state *s, int fd)
-{
- int len;
-
- len = read(fd, s->inbuf, SCAN_BUF);
- if (len>=0) {
- s->inend = s->inbuf+len;
- if (s->fd != -1)
- close(s->fd);
- s->fd = fd;
- if (s->stream) {
- gtk_object_unref((GtkObject *)s->stream);
- s->stream = NULL;
- }
- return 0;
- } else {
- return -1;
- }
-}
-
-static int
-folder_scan_init_with_stream(struct _header_scan_state *s, CamelStream *stream)
-{
- int len;
-
- len = camel_stream_read(stream, s->inbuf, SCAN_BUF);
- if (len>=0) {
- s->inend = s->inbuf+len;
- if (s->stream)
- gtk_object_unref((GtkObject *)s->stream);
- s->stream = stream;
- gtk_object_ref((GtkObject *)stream);
- if (s->fd != -1) {
- close(s->fd);
- s->fd = -1;
- }
- return 0;
- } else {
- return -1;
- }
-}
-
-#define USE_FROM
-
-static void
-folder_scan_step(struct _header_scan_state *s, char **databuffer, int *datalength)
-{
- struct _header_scan_stack *h, *hb;
- const char *content;
- const char *bound;
- int type;
- int state;
- struct _header_content_type *ct = NULL;
- struct _header_scan_filter *f;
- size_t presize;
-
-/* printf("\nSCAN PASS: state = %d '%s'\n", s->state, states[s->state]);*/
-
-tail_recurse:
- d({
- printf("\nSCAN STACK:\n");
- printf(" '%s' :\n", states[s->state]);
- hb = s->parts;
- while (hb) {
- printf(" '%s' : %s\n", states[hb->savestate], hb->boundary);
- hb = hb->parent;
- }
- printf("\n");
- });
-
- switch (s->state) {
-
- case HSCAN_INITIAL:
-#ifdef USE_FROM
- if (s->scan_from) {
- /* FIXME: it would be nice not to have to allocate this every pass */
- h = g_malloc0(sizeof(*h));
- h->boundary = g_strdup("From ");
- h->boundarylen = strlen(h->boundary);
- folder_push_part(s, h);
-
- h = s->parts;
- do {
- hb = folder_scan_content(s, &state, databuffer, datalength);
- } while (hb==h && *datalength>0);
-
- if (*datalength==0 && hb==h) {
- d(printf("found 'From '\n"));
- s->start_of_from = folder_tell(s);
- folder_scan_skip_line(s);
- h->savestate = HSCAN_INITIAL;
- s->state = HSCAN_FROM;
- } else {
- folder_pull_part(s);
- s->state = HSCAN_EOF;
- }
- return;
- } else {
- s->start_of_from = -1;
- }
-
-#endif
- case HSCAN_FROM:
- s->start_of_headers = folder_tell(s);
- h = folder_scan_header(s, &state);
-#ifdef USE_FROM
- if (s->scan_from)
- h->savestate = HSCAN_FROM_END;
- else
-#endif
- h->savestate = HSCAN_EOF;
-
- /* FIXME: should this check for MIME-Version: 1.0 as well? */
-
- type = HSCAN_HEADER;
- if ( (content = header_raw_find(&h->headers, "Content-Type", NULL))
- && (ct = header_content_type_decode(content))) {
- if (!strcasecmp(ct->type, "multipart")) {
- bound = header_content_type_param(ct, "boundary");
- if (bound) {
- d(printf("multipart, boundary = %s\n", bound));
- h->boundarylen = strlen(bound)+2;
- h->boundary = g_malloc(h->boundarylen+3);
- sprintf(h->boundary, "--%s--", bound);
- type = HSCAN_MULTIPART;
- } else {
- g_warning("Multipart with no boundary, treating as text/plain");
- }
- } else if (!strcasecmp(ct->type, "message")) {
- if (!strcasecmp(ct->subtype, "rfc822")
- /*|| !strcasecmp(ct->subtype, "partial")*/) {
- type = HSCAN_MESSAGE;
- }
- }
- }
- h->content_type = ct;
- folder_push_part(s, h);
- s->state = type;
- return;
-
- case HSCAN_HEADER:
- s->state = HSCAN_BODY;
-
- case HSCAN_BODY:
- h = s->parts;
- *datalength = 0;
- presize = SCAN_HEAD;
- f = s->filters;
-
- do {
- hb = folder_scan_content(s, &state, databuffer, datalength);
- if (*datalength>0) {
- d(printf("Content raw: '%.*s'\n", *datalength, *databuffer));
-
- while (f) {
- camel_mime_filter_filter(f->filter, *databuffer, *datalength, presize,
- databuffer, datalength, &presize);
- f = f->next;
- }
- return;
- }
- } while (hb==h && *datalength>0);
-
- /* check for any filter completion data */
- while (f) {
- camel_mime_filter_filter(f->filter, *databuffer, *datalength, presize,
- databuffer, datalength, &presize);
- f = f->next;
- }
- if (*datalength > 0)
- return;
-
- s->state = HSCAN_BODY_END;
- break;
-
- case HSCAN_MULTIPART:
- h = s->parts;
- do {
- do {
- hb = folder_scan_content(s, &state, databuffer, datalength);
- if (*datalength>0) {
- /* FIXME: needs a state to return this shit??? */
- d(printf("Multipart Content: '%.*s'\n", *datalength, *databuffer));
- }
- } while (hb==h && *datalength>0);
- if (*datalength==0 && hb==h) {
- d(printf("got boundary: %s\n", hb->boundary));
- folder_scan_skip_line(s);
- if (!state) {
- s->state = HSCAN_FROM;
- folder_scan_step(s, databuffer, datalength);
- s->parts->savestate = HSCAN_MULTIPART; /* set return state for the new head part */
- return;
- }
- } else {
- break;
- }
- } while (1);
-
- s->state = HSCAN_MULTIPART_END;
- break;
-
- case HSCAN_MESSAGE:
- s->state = HSCAN_FROM;
- folder_scan_step(s, databuffer, datalength);
- s->parts->savestate = HSCAN_MESSAGE_END;
- break;
-
- case HSCAN_FROM_END:
- case HSCAN_BODY_END:
- case HSCAN_MULTIPART_END:
- case HSCAN_MESSAGE_END:
- s->state = s->parts->savestate;
- folder_pull_part(s);
- if (s->state & HSCAN_END)
- return;
- goto tail_recurse;
-
- case HSCAN_EOF:
- return;
-
- default:
- g_warning("Invalid state in camel-mime-parser: %d", s->state);
- break;
- }
-
- return;
-}
-
-#ifdef STANDALONE
-int main(int argc, char **argv)
-{
- int fd;
- struct _header_scan_state *s;
- char *data;
- int len;
- int state;
- char *name = "/tmp/evmail/Inbox";
- struct _header_scan_stack *h;
- int i;
- int attach = 0;
-
- if (argc==2)
- name = argv[1];
-
- printf("opening: %s", name);
-
- for (i=1;i<argc;i++) {
- const char *encoding = NULL, *charset = NULL;
- char *attachname;
-
- name = argv[i];
- printf("opening: %s", name);
-
- fd = open(name, O_RDONLY);
- if (fd==-1) {
- perror("Cannot open mailbox");
- exit(1);
- }
- s = folder_scan_init(fd);
- s->scan_from = FALSE;
-#if 0
- h = g_malloc0(sizeof(*h));
- h->savestate = HSCAN_EOF;
- folder_push_part(s, h);
-#endif
- while (s->state != HSCAN_EOF) {
- folder_scan_step(s, &data, &len);
- printf("\n -- PARSER STEP RETURN -- %d '%s'\n\n", s->state, states[s->state]);
- switch (s->state) {
- case HSCAN_HEADER:
- if (s->parts->content_type
- && (charset = header_content_type_param(s->parts->content_type, "charset"))) {
- if (strcasecmp(charset, "us-ascii")) {
- folder_push_filter_charset(s, "UTF-8", charset);
- } else {
- charset = NULL;
- }
- } else {
- charset = NULL;
- }
-
- encoding = header_raw_find(&s->parts->headers, "Content-transfer-encoding");
- printf("encoding = '%s'\n", encoding);
- if (encoding && !strncasecmp(encoding, " base64", 7)) {
- printf("adding base64 filter\n");
- attachname = g_strdup_printf("attach.%d.%d", i, attach++);
- folder_push_filter_save(s, attachname);
- g_free(attachname);
- folder_push_filter_mime(s, 0);
- }
- if (encoding && !strncasecmp(encoding, " quoted-printable", 17)) {
- printf("adding quoted-printable filter\n");
- attachname = g_strdup_printf("attach.%d.%d", i, attach++);
- folder_push_filter_save(s, attachname);
- g_free(attachname);
- folder_push_filter_mime(s, 1);
- }
-
- break;
- case HSCAN_BODY:
- break;
- case HSCAN_BODY_END:
- if (encoding && !strncasecmp(encoding, " base64", 7)) {
- printf("removing filters\n");
- folder_filter_pull(s);
- folder_filter_pull(s);
- }
- if (encoding && !strncasecmp(encoding, " quoted-printable", 17)) {
- printf("removing filters\n");
- folder_filter_pull(s);
- folder_filter_pull(s);
- }
- if (charset) {
- folder_filter_pull(s);
- charset = NULL;
- }
- encoding = NULL;
- break;
- default:
- break;
- }
- }
- folder_scan_close(s);
- close(fd);
- }
- return 0;
-}
-
-#endif /* STANDALONE */
generated by cgit (git 2.34.1) at 2024-12-29 09:14:55 +0800