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-rw-r--r--camel/camel-mime-parser.c1956
1 files changed, 0 insertions, 1956 deletions
diff --git a/camel/camel-mime-parser.c b/camel/camel-mime-parser.c
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index b9fc3d2ebb..0000000000
--- a/camel/camel-mime-parser.c
+++ /dev/null
@@ -1,1956 +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 */
-
-/* Do not change this code without asking me (Michael Zucchi) first
-
- There is almost always a reason something was done a certain way.
- */
-
-#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 <regex.h>
-#include <ctype.h>
-
-#include <glib.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 PURIFY*/
-
-#define MEMPOOL
-
-#define STRUCT_ALIGN 4
-
-#ifdef PURIFY
-int inend_id = -1,
- inbuffer_id = -1;
-#endif
-
-#if 0
-extern int strdup_count;
-extern int malloc_count;
-extern int free_count;
-
-#define g_strdup(x) (strdup_count++, g_strdup(x))
-#define g_malloc(x) (malloc_count++, g_malloc(x))
-#define g_free(x) (free_count++, g_free(x))
-#endif
-
-#ifdef MEMPOOL
-typedef struct _MemPoolNode {
- struct _MemPoolNode *next;
-
- int free;
- char data[1];
-} MemPoolNode;
-
-typedef struct _MemPoolThresholdNode {
- struct _MemPoolThresholdNode *next;
- char data[1];
-} MemPoolThresholdNode;
-
-typedef struct _MemPool {
- int blocksize;
- int threshold;
- struct _MemPoolNode *blocks;
- struct _MemPoolThresholdNode *threshold_blocks;
-} MemPool;
-
-MemPool *mempool_new(int blocksize, int threshold);
-void *mempool_alloc(MemPool *pool, int size);
-void mempool_flush(MemPool *pool, int freeall);
-void mempool_free(MemPool *pool);
-
-MemPool *mempool_new(int blocksize, int threshold)
-{
- MemPool *pool;
-
- pool = g_malloc(sizeof(*pool));
- if (threshold >= blocksize)
- threshold = blocksize * 2 / 3;
- pool->blocksize = blocksize;
- pool->threshold = threshold;
- pool->blocks = NULL;
- pool->threshold_blocks = NULL;
- return pool;
-}
-
-void *mempool_alloc(MemPool *pool, int size)
-{
- size = (size + STRUCT_ALIGN) & (~(STRUCT_ALIGN-1));
- if (size>=pool->threshold) {
- MemPoolThresholdNode *n;
-
- n = g_malloc(sizeof(*n) - sizeof(char) + size);
- n->next = pool->threshold_blocks;
- pool->threshold_blocks = n;
- return &n->data[0];
- } else {
- MemPoolNode *n;
-
- n = pool->blocks;
- while (n) {
- if (n->free >= size) {
- n->free -= size;
- return &n->data[n->free];
- }
- n = n->next;
- }
-
- n = g_malloc(sizeof(*n) - sizeof(char) + pool->blocksize);
- n->next = pool->blocks;
- pool->blocks = n;
- n->free = pool->blocksize - size;
- return &n->data[n->free];
- }
-}
-
-void mempool_flush(MemPool *pool, int freeall)
-{
- MemPoolThresholdNode *tn, *tw;
- MemPoolNode *pw, *pn;
-
- tw = pool->threshold_blocks;
- while (tw) {
- tn = tw->next;
- g_free(tw);
- tw = tn;
- }
- pool->threshold_blocks = NULL;
-
- if (freeall) {
- pw = pool->blocks;
- while (pw) {
- pn = pw->next;
- g_free(pw);
- pw = pn;
- }
- pool->blocks = NULL;
- } else {
- pw = pool->blocks;
- while (pw) {
- pw->free = pool->blocksize;
- pw = pw->next;
- }
- }
-}
-
-void mempool_free(MemPool *pool)
-{
- if (pool) {
- mempool_flush(pool, 1);
- g_free(pool);
- }
-}
-
-#endif
-
-
-
-
-
-
-
-
-
-
-
-
-#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) */
-
- unsigned int midline:1; /* are we mid-line interrupted? */
- unsigned int scan_from:1; /* do we care about From lines? */
- unsigned int scan_pre_from:1; /* do we return pre-from data? */
-
- 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 */
-
- /* 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 */
-
-#ifdef MEMPOOL
- MemPool *pool; /* memory pool to keep track of headers/etc at this level */
-#endif
- struct _header_raw *headers; /* headers for this part */
-
- struct _header_content_type *content_type;
-
- /* I dont use GString's casue you can't efficiently append a buffer to them */
- GByteArray *pretext; /* for multipart types, save the pre-boundary data here */
- GByteArray *posttext; /* for multipart types, save the post-boundary data here */
- int prestage; /* used to determine if it is a pre-boundary or post-boundary data segment */
-
- GByteArray *from_line; /* the from line */
-
- char *boundary; /* for multipart/ * boundaries, including leading -- and trailing -- for the final part */
- int boundarylen; /* actual length of boundary, including leading -- if there is one */
- int boundarylenfinal; /* length of boundary, including trailing -- if there is one */
- int atleast; /* the biggest boundary from here to the parent */
-};
-
-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 void folder_scan_drop_step(struct _header_scan_state *s);
-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, GByteArray *save);
-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 int folder_read(struct _header_scan_state *s);
-#ifdef MEMPOOL
-static void header_append_mempool(struct _header_scan_state *s, struct _header_scan_stack *h, char *header, int offset);
-#endif
-
-static void camel_mime_parser_class_init (CamelMimeParserClass *klass);
-static void camel_mime_parser_init (CamelMimeParser *obj);
-
-#if d(!)0
-static char *states[] = {
- "HSCAN_INITIAL",
- "HSCAN_PRE_FROM", /* pre-from data */
- "HSCAN_FROM", /* got 'From' line */
- "HSCAN_HEADER", /* toplevel header */
- "HSCAN_BODY", /* scanning body of message */
- "HSCAN_MULTIPART", /* got multipart header */
- "HSCAN_MESSAGE", /* rfc822/news message */
-
- "HSCAN_PART", /* part of a multipart */
-
- "HSCAN_EOF", /* end of file */
- "HSCAN_PRE_FROM_END",
- "HSCAN_FROM_END",
- "HSCAN_HEAER_END",
- "HSCAN_BODY_END",
- "HSCAN_MULTIPART_END",
- "HSCAN_MESSAGE_END",
-};
-#endif
-
-static CamelObjectClass *camel_mime_parser_parent;
-
-static void
-camel_mime_parser_class_init (CamelMimeParserClass *klass)
-{
- camel_mime_parser_parent = camel_type_get_global_classfuncs (camel_object_get_type ());
-}
-
-static void
-camel_mime_parser_init (CamelMimeParser *obj)
-{
- struct _header_scan_state *s;
-
- s = folder_scan_init();
- _PRIVATE(obj) = s;
-}
-
-static void
-camel_mime_parser_finalise(CamelObject *o)
-{
- struct _header_scan_state *s = _PRIVATE(o);
-#ifdef PURIFY
- purify_watch_remove_all();
-#endif
- folder_scan_close(s);
-}
-
-CamelType
-camel_mime_parser_get_type (void)
-{
- static CamelType type = CAMEL_INVALID_TYPE;
-
- if (type == CAMEL_INVALID_TYPE) {
- type = camel_type_register (camel_object_get_type (), "CamelMimeParser",
- sizeof (CamelMimeParser),
- sizeof (CamelMimeParserClass),
- (CamelObjectClassInitFunc) camel_mime_parser_class_init,
- NULL,
- (CamelObjectInitFunc) camel_mime_parser_init,
- (CamelObjectFinalizeFunc) camel_mime_parser_finalise);
- }
-
- return type;
-}
-
-/**
- * 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 ( camel_object_new (camel_mime_parser_get_type ()));
- return new;
-}
-
-
-/**
- * camel_mime_parser_filter_add:
- * @m:
- * @mf:
- *
- * Add a filter that will be applied to any body content before it is passed
- * to the caller. Filters may be pipelined to perform multi-pass operations
- * on the content, and are applied in the order they were added.
- *
- * Note that filters are only applied to the body content of messages, and once
- * a filter has been set, all content returned by a filter_step() with a state
- * of HSCAN_BODY will have passed through the filter.
- *
- * Return value: An id that may be passed to filter_remove() to remove
- * the filter, or -1 if the operation failed.
- **/
-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;
- camel_object_ref((CamelObject *)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;
-}
-
-/**
- * camel_mime_parser_filter_remove:
- * @m:
- * @id:
- *
- * Remove a processing filter from the pipeline. There is no
- * restriction on the order the filters can be removed.
- **/
-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) {
- camel_object_unref((CamelObject *)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;
- }
-}
-
-/**
- * camel_mime_parser_header:
- * @m:
- * @name: Name of header.
- * @offset: Pointer that can receive the offset of the header in
- * the stream from the start of parsing.
- *
- * Lookup a header by name.
- *
- * Return value: The header value, or NULL if the header is not
- * defined.
- **/
-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;
-}
-
-/**
- * camel_mime_parser_headers_raw:
- * @m:
- *
- * Get the list of the raw headers which are defined for the
- * current state of the parser. These headers are valid
- * until the next call to parser_step(), or parser_drop_step().
- *
- * Return value: The raw headers, or NULL if there are no headers
- * defined for the current part or state. These are READ ONLY.
- **/
-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;
-}
-
-static const char *
-byte_array_to_string(GByteArray *array)
-{
- if (array == NULL)
- return NULL;
-
- if (array->len == 0 || array->data[array->len-1] != '\0')
- g_byte_array_append(array, "", 1);
-
- return array->data;
-}
-
-/**
- * camel_mime_parser_preface:
- * @m:
- *
- * Retrieve the preface text for the current multipart.
- * Can only be used when the state is HSCAN_MULTIPART_END.
- *
- * Return value: The preface text, or NULL if there wasn't any.
- **/
-const char *
-camel_mime_parser_preface(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- if (s->parts)
- return byte_array_to_string(s->parts->pretext);
-
- return NULL;
-}
-
-/**
- * camel_mime_parser_postface:
- * @m:
- *
- * Retrieve the postface text for the current multipart.
- * Only returns valid data when the current state if
- * HSCAN_MULTIPART_END.
- *
- * Return value: The postface text, or NULL if there wasn't any.
- **/
-const char *
-camel_mime_parser_postface(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- if (s->parts)
- return byte_array_to_string(s->parts->posttext);
-
- return NULL;
-}
-
-/**
- * camel_mime_parser_from_line:
- * @m:
- *
- * Get the last scanned "From " line, from a recently scanned from.
- * This should only be called in the HSCAN_FROM state. The
- * from line will include the closing \n found (if there was one).
- *
- * The return value will remain valid while in the HSCAN_FROM
- * state, or any deeper state.
- *
- * Return value: The From line, or NULL if called out of context.
- **/
-const char *
-camel_mime_parser_from_line(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- if (s->parts)
- return byte_array_to_string(s->parts->from_line);
-
- return NULL;
-}
-
-/**
- * camel_mime_parser_init_with_fd:
- * @m:
- * @fd: A valid file descriptor.
- *
- * Initialise the scanner with an fd. The scanner's offsets
- * will be relative to the current file position of the file
- * descriptor. As a result, seekable descritors should
- * be seeked using the parser seek functions.
- *
- * An initial buffer will be read from the file descriptor
- * immediately, although no parsing will occur.
- *
- * Return value: Returns -1 on error.
- **/
-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);
-}
-
-/**
- * camel_mime_parser_init_with_stream:
- * @m:
- * @stream:
- *
- * Initialise the scanner with a source stream. The scanner's
- * offsets will be relative to the current file position of
- * the stream. As a result, seekable streams should only
- * be seeked using the parser seek function.
- *
- * An initial buffer will be read from the stream
- * immediately, although no parsing will occur.
- *
- * Return value: -1 on error.
- **/
-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);
-}
-
-/**
- * camel_mime_parser_scan_from:
- * @m:
- * @scan_from: #TRUE if the scanner should scan From lines.
- *
- * Tell the scanner if it should scan "^From " lines or not.
- *
- * If the scanner is scanning from lines, two additional
- * states HSCAN_FROM and HSCAN_FROM_END will be returned
- * to the caller during parsing.
- *
- * This may also be preceeded by an optional
- * HSCAN_PRE_FROM state which contains the scanned data
- * found before the From line is encountered. See also
- * scan_pre_from().
- **/
-void
-camel_mime_parser_scan_from(CamelMimeParser *m, int scan_from)
-{
- struct _header_scan_state *s = _PRIVATE(m);
- s->scan_from = scan_from;
-}
-
-/**
- * camel_mime_parser_scan_pre_from:
- * @:
- * @scan_pre_from: #TRUE if we want to get pre-from data.
- *
- * Tell the scanner whether we want to know abou the pre-from
- * data during a scan. If we do, then we may get an additional
- * state HSCAN_PRE_FROM which returns the specified data.
- **/
-void
-camel_mime_parser_scan_pre_from(CamelMimeParser *m, int scan_pre_from)
-{
- struct _header_scan_state *s = _PRIVATE(m);
- s->scan_pre_from = scan_pre_from;
-}
-
-/**
- * camel_mime_parser_content_type:
- * @m:
- *
- * Get the content type defined in the current part.
- *
- * Return value: A content_type structure, or NULL if there
- * is no content-type defined for this part of state of the
- * parser.
- **/
-struct _header_content_type *
-camel_mime_parser_content_type(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- /* FIXME: should this search up until it's found the 'right'
- content-type? can it? */
- if (s->parts)
- return s->parts->content_type;
- return NULL;
-}
-
-/**
- * camel_mime_parser_unstep:
- * @m:
- *
- * Cause the last step operation to repeat itself. If this is
- * called repeated times, then the same step will be repeated
- * that many times.
- *
- * Note that it is not possible to scan back using this function,
- * only to have a way of peeking the next state.
- **/
-void camel_mime_parser_unstep(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- s->unstep++;
-}
-
-/**
- * camel_mime_parser_drop_step:
- * @m:
- *
- * Drop the last step call. This should only be used
- * in conjunction with seeking of the stream as the
- * stream may be in an undefined state relative to the
- * state of the parser.
- *
- * Use this call with care.
- **/
-void camel_mime_parser_drop_step(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- s->unstep = 0;
- folder_scan_drop_step(s);
-}
-
-/**
- * camel_mime_parser_step:
- * @m:
- * @databuffer: Pointer to accept a pointer to the data
- * associated with this step (if any). May be #NULL,
- * in which case datalength is also ingored.
- * @datalength: Pointer to accept a pointer to the data
- * length associated with this step (if any).
- *
- * Parse the next part of the MIME message. If _unstep()
- * has been called, then continue to return the same state
- * for that many calls.
- *
- * If the step is HSCAN_BODY then the databuffer and datalength
- * pointers will be setup to point to the internal data buffer
- * of the scanner and may be processed as required. Any
- * filters will have already been applied to this data.
- *
- * Refer to the state diagram elsewhere for a full listing of
- * the states an application is gauranteed to get from the
- * scanner.
- *
- * Return value: The current new state of the parser
- * is returned.
- **/
-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) {
- char *dummy;
- int dummylength;
-
- if (databuffer == NULL) {
- databuffer = &dummy;
- datalength = &dummylength;
- }
-
- folder_scan_step(s, databuffer, datalength);
- } else
- s->unstep--;
-
- d(printf("NEW STATE: '%s' :\n", states[s->state]));
-
- return s->state;
-}
-
-/**
- * camel_mime_parser_read:
- * @m:
- * @databuffer:
- * @len:
- *
- * Read at most @len bytes from the internal mime parser buffer.
- *
- * Returns the address of the internal buffer in @databuffer,
- * and the length of useful data.
- *
- * @len may be specified as INT_MAX, in which case you will
- * get the full remainder of the buffer at each call.
- *
- * Note that no parsing of the data read through this function
- * occurs, so no state changes occur, but the seek position
- * is updated appropriately.
- *
- * Return value: The number of bytes available, or -1 on error.
- **/
-int
-camel_mime_parser_read(CamelMimeParser *m, const char **databuffer, int len)
-{
- struct _header_scan_state *s = _PRIVATE(m);
- int there;
-
- if (len == 0)
- return 0;
-
- d(printf("parser::read() reading %d bytes\n", len));
-
- there = MIN(s->inend - s->inptr, len);
- d(printf("parser::read() there = %d bytes\n", there));
- if (there > 0) {
- *databuffer = s->inptr;
- s->inptr += there;
- return there;
- }
-
- if (folder_read(s) == -1)
- return -1;
-
- there = MIN(s->inend - s->inptr, len);
- d(printf("parser::read() had to re-read, now there = %d bytes\n", there));
-
- *databuffer = s->inptr;
- s->inptr += there;
-
- return there;
-}
-
-/**
- * camel_mime_parser_tell:
- * @m:
- *
- * Return the current scanning offset. The meaning of this
- * value will depend on the current state of the parser.
- *
- * An incomplete listing of the states:
- *
- * HSCAN_INITIAL, The start of the current message.
- * HSCAN_HEADER, HSCAN_MESSAGE, HSCAN_MULTIPART, the character
- * position immediately after the end of the header.
- * HSCAN_BODY, Position within the message of the start
- * of the current data block.
- * HSCAN_*_END, The position of the character starting
- * the next section of the scan (the last position + 1 of
- * the respective current state).
- *
- * Return value: See above.
- **/
-off_t camel_mime_parser_tell(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- return folder_tell(s);
-}
-
-/**
- * camel_mime_parser_tell_start_headers:
- * @m:
- *
- * Find out the position within the file of where the
- * headers started, this is cached by the parser
- * at the time.
- *
- * Return value: The header start position, or -1 if
- * no headers were scanned in the current state.
- **/
-off_t camel_mime_parser_tell_start_headers(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- return s->start_of_headers;
-}
-
-/**
- * camel_mime_parser_tell_start_from:
- * @m:
- *
- * If the parser is scanning From lines, then this returns
- * the position of the start of the From line.
- *
- * Return value: The start of the from line, or -1 if there
- * was no From line, or From lines are not being scanned.
- **/
-off_t camel_mime_parser_tell_start_from(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
-
- return s->start_of_from;
-}
-
-/**
- * camel_mime_parser_seek:
- * @m:
- * @off: Number of bytes to offset the seek by.
- * @whence: SEEK_SET, SEEK_CUR, SEEK_END
- *
- * Reset the source position to a known value.
- *
- * Note that if the source stream/descriptor was not
- * positioned at 0 to begin with, and an absolute seek
- * is specified (whence != SEEK_CUR), then the seek
- * position may not match the desired seek position.
- *
- * Return value: The new seek offset, or -1 on
- * an error (for example, trying to seek on a non-seekable
- * stream or file descriptor).
- **/
-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);
-}
-
-/**
- * camel_mime_parser_state:
- * @m:
- *
- * Get the current parser state.
- *
- * Return value: The current parser state.
- **/
-enum _header_state camel_mime_parser_state(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
- return s->state;
-}
-
-/**
- * camel_mime_parser_stream:
- * @m:
- *
- * Get the stream, if any, the parser has been initialised
- * with. May be used to setup sub-streams, but should not
- * be read from directly (without saving and restoring
- * the seek position in between).
- *
- * Return value: The stream from _init_with_stream(), or NULL
- * if the parser is reading from a file descriptor or is
- * uninitialised.
- **/
-CamelStream *camel_mime_parser_stream(CamelMimeParser *m)
-{
- struct _header_scan_state *s = _PRIVATE(m);
- return s->stream;
-}
-
-/**
- * camel_mime_parser_fd:
- * @m:
- *
- * Return the file descriptor, if any, the parser has been
- * initialised with.
- *
- * Should not be read from unless the parser it to terminate,
- * or the seek offset can be reset before the next parse
- * step.
- *
- * Return value: The file descriptor or -1 if the parser
- * is reading from a stream or has not been initialised.
- **/
-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;
-#ifdef PURIFY
- purify_watch_remove(inend_id);
- purify_watch_remove(inbuffer_id);
-#endif
- /* 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));
- }
-
- g_assert(s->inptr<=s->inend);
-#ifdef PURIFY
- inend_id = purify_watch(&s->inend);
- inbuffer_id = purify_watch_n(s->inend+1, SCAN_HEAD-1, "rw");
-#endif
- r(printf("content = %d '%.*s'\n", s->inend - s->inptr, s->inend - s->inptr, s->inptr));
- /* set a sentinal, for the inner loops to check against */
- s->inend[0] = '\n';
- 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);
- }
-#ifdef PURIFY
- purify_watch_remove(inend_id);
- purify_watch_remove(inbuffer_id);
-#endif
- 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;
- s->inend[0] = '\n';
- } else
- newoffset = -1;
- }
-#ifdef PURIFY
- inend_id = purify_watch(&s->inend);
- inbuffer_id = purify_watch_n(s->inend+1, SCAN_HEAD-1, "rw");
-#endif
- return newoffset;
-}
-
-static void
-folder_push_part(struct _header_scan_state *s, struct _header_scan_stack *h)
-{
- if (s->parts && s->parts->atleast > h->boundarylenfinal)
- h->atleast = s->parts->atleast;
- else
- h->atleast = MAX(h->boundarylenfinal, 1);
-
- 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);
-#ifdef MEMPOOL
- mempool_free(h->pool);
-#else
- header_raw_clear(&h->headers);
-#endif
- header_content_type_unref(h->content_type);
- if (h->pretext)
- g_byte_array_free(h->pretext, TRUE);
- if (h->posttext)
- g_byte_array_free(h->posttext, TRUE);
- if (h->from_line)
- g_byte_array_free(h->from_line, TRUE);
- g_free(h);
- } else {
- g_warning("Header stack underflow!\n");
- }
-}
-
-static int
-folder_scan_skip_line(struct _header_scan_state *s, GByteArray *save)
-{
- 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')
- ;
-
- if (save)
- g_byte_array_append(save, s->inptr, inptr-s->inptr);
-
- s->inptr = inptr;
-
- if (c=='\n') {
- s->atleast = atleast;
- return 0;
- }
- }
-
- s->atleast = atleast;
-
- return -1; /* not found */
-}
-
-/* TODO: Is there any way to make this run faster? It gets called a lot ... */
-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; /* 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", s->atleast, 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->boundarylenfinal <= len) {
- int extra = part->boundarylenfinal - part->boundarylen;
-
- /* check the extra stuff on an final boundary, normally -- for mime parts */
- if (extra>0) {
- *lastone = memcmp(&boundary[part->boundarylen],
- &part->boundary[part->boundarylen],
- extra) == 0;
- } else {
- *lastone = TRUE;
- }
- h(printf("checking lastone = %s\n", *lastone?"TRUE":"FALSE"));
- } 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;
-}
-
-#ifdef MEMPOOL
-static void
-header_append_mempool(struct _header_scan_state *s, struct _header_scan_stack *h, char *header, int offset)
-{
- struct _header_raw *l, *n;
- char *content;
-
- content = strchr(header, ':');
- if (content) {
- register int len;
- n = mempool_alloc(h->pool, sizeof(*n));
- n->next = NULL;
-
- len = content-header;
- n->name = mempool_alloc(h->pool, len+1);
- memcpy(n->name, header, len);
- n->name[len] = 0;
-
- content++;
-
- len = s->outptr - content;
- n->value = mempool_alloc(h->pool, len+1);
- memcpy(n->value, content, len);
- n->value[len] = 0;
-
- n->offset = offset;
-
- l = (struct _header_raw *)&h->headers;
- while (l->next) {
- l = l->next;
- }
- l->next = n;
- }
-
-}
-
-#define header_raw_append_parse(a, b, c) (header_append_mempool(s, h, b, c))
-
-#endif
-
-/* Copy the string start->inptr into the header buffer (s->outbuf),
- grow if necessary
- remove trailing \r chars (\n's assumed already removed)
- and track the start offset of the header */
-/* Basically an optimised version of g_byte_array_append() */
-#define header_append(s, start, inptr) \
-{ \
- register int headerlen = inptr-start; \
- \
- if (headerlen > 0) { \
- if (headerlen >= (s->outend - s->outptr)) { \
- register char *outnew; \
- register int len = ((s->outend - s->outbuf)+headerlen)*2+1; \
- outnew = g_realloc(s->outbuf, len); \
- s->outptr = s->outptr - s->outbuf + outnew; \
- s->outbuf = outnew; \
- s->outend = outnew + len; \
- } \
- if (start[headerlen-1] == '\r') \
- headerlen--; \
- memcpy(s->outptr, start, headerlen); \
- s->outptr += headerlen; \
- } \
- if (s->header_start == -1) \
- s->header_start = (start-s->inbuf) + s->seek; \
-}
-
-static struct _header_scan_stack *
-folder_scan_header(struct _header_scan_state *s, int *lastone)
-{
- int atleast = s->atleast, newatleast;
- char *start = NULL;
- int len;
- struct _header_scan_stack *h;
- char *inend;
- register char *inptr;
-
- h(printf("scanning first bit\n"));
-
- h = g_malloc0(sizeof(*h));
-#ifdef MEMPOOL
- h->pool = mempool_new(8192, 4096);
-#endif
-
- if (s->parts)
- newatleast = s->parts->atleast;
- else
- newatleast = 1;
- *lastone = FALSE;
-
- do {
- s->atleast = newatleast;
-
- h(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+1;
-
- while (inptr<inend) {
- if (!s->midline) {
- if (folder_boundary_check(s, inptr, lastone)) {
- if ((s->outptr>s->outbuf))
- goto header_truncated; /* may not actually be truncated */
-
- goto header_done;
- }
- }
-
- start = inptr;
-
- /* goto next line/sentinal */
- while ((*inptr++)!='\n')
- ;
-
- g_assert(inptr<=s->inend+1);
-
- /* check for sentinal or real end of line */
- if (inptr > inend) {
- h(printf("not at end of line yet, going further\n"));
- /* didn't find end of line within our allowed area */
- inptr = inend;
- s->midline = TRUE;
- header_append(s, start, inptr);
- } else {
- h(printf("got line part: '%.*s'\n", inptr-1-start, start));
- /* got a line, strip and add it, process it */
- s->midline = FALSE;
- header_append(s, start, inptr-1);
-
- /* check for end of headers */
- if (s->outbuf == s->outptr)
- goto header_done;
-
- /* check for continuation/compress headers, we have atleast 1 char here to work with */
- if (inptr[0] == ' ' || inptr[0] == '\t') {
- h(printf("continuation\n"));
- /* TODO: this wont catch multiple space continuation across a read boundary, but
- that is assumed rare, and not fatal anyway */
- do
- inptr++;
- while (*inptr == ' ' || *inptr == '\t');
- inptr--;
- *inptr = ' ';
- } else {
- /* otherwise, complete header, add it */
- s->outptr[0] = 0;
-
- h(printf("header '%.20s' at %d\n", s->outbuf, s->header_start));
-
- header_raw_append_parse(&h->headers, s->outbuf, s->header_start);
- s->outptr = s->outbuf;
- s->header_start = -1;
- }
- }
- }
- s->inptr = inptr;
- }
- h(printf("end of file? read %d bytes\n", len));
- newatleast = 1;
- } while (s->atleast > 1);
-
- if ((s->outptr > s->outbuf) || s->inend > s->inptr) {
- start = s->inptr;
- inptr = s->inend;
- if (inptr > start) {
- if (inptr[-1] == '\n')
- inptr--;
- }
- goto header_truncated;
- }
-
- s->atleast = atleast;
-
- return h;
-
-header_truncated:
- header_append(s, start, inptr);
-
- s->outptr[0] = 0;
- if (s->outbuf == s->outptr)
- goto header_done;
-
- header_raw_append_parse(&h->headers, s->outbuf, s->header_start);
-
- s->outptr = s->outbuf;
-header_done:
- 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, newatleast;
- register char *inptr;
- char *inend;
- char *start;
- int len;
- struct _header_scan_stack *part;
- int onboundary = FALSE;
-
- c(printf("scanning content\n"));
-
- part = s->parts;
- if (part)
- newatleast = part->atleast;
- else
- newatleast = 1;
- *lastone = FALSE;
-
- c(printf("atleast = %d\n", s->atleast));
-
- do {
- s->atleast = newatleast;
-
- 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+1;
- start = inptr;
-
- c(printf("inptr = %p, inend = %p\n", inptr, inend));
-
- while (inptr<inend) {
- if (!s->midline
- && (part = folder_boundary_check(s, inptr, lastone))) {
- onboundary = TRUE;
-
- /* since we truncate the boundary data, we need at least 1 char here spare,
- to remain in the same state */
- if ( (inptr-start) > 1)
- goto content;
-
- /* otherwise, jump to the state of the boundary we actually found */
- goto normal_exit;
- }
-
- /* goto the next line */
- while ((*inptr++)!='\n')
- ;
-
- /* check the sentinal, if we went past the atleast limit, and reset it to there */
- if (inptr > inend) {
- s->midline = TRUE;
- inptr = inend;
- } else {
- s->midline = FALSE;
- }
- }
-
- c(printf("ran out of input, dumping what i have (%d) bytes midline = %s\n",
- inptr-start, s->midline?"TRUE":"FALSE"));
- goto content;
- }
- newatleast = 1;
- } while (s->atleast > 1);
-
- c(printf("length read = %d\n", len));
-
- if (s->inend > s->inptr) {
- start = s->inptr;
- inptr = s->inend;
- goto content;
- }
-
- *length = 0;
- s->atleast = atleast;
- return NULL;
-
-content:
- part = s->parts;
-normal_exit:
- s->atleast = atleast;
- s->inptr = inptr;
-
- *data = start;
- /* if we hit a boundary, we should not include the closing \n */
- if (onboundary && (inptr-start)>0)
- *length = inptr-start-1;
- else
- *length = inptr-start;
-
- /*printf("got %scontent: '%.*s'\n", 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) {
- camel_object_unref((CamelObject *)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->scan_pre_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;
- s->inptr = s->inbuf;
- s->inend[0] = '\n';
- if (s->fd != -1)
- close(s->fd);
- s->fd = fd;
- if (s->stream) {
- camel_object_unref((CamelObject *)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;
- s->inptr = s->inbuf;
- s->inend[0] = '\n';
- if (s->stream)
- camel_object_unref((CamelObject *)s->stream);
- s->stream = stream;
- camel_object_ref((CamelObject *)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 ", states[hb->savestate], hb->boundary);
- if (hb->content_type) {
- printf("(%s/%s)", hb->content_type->type, hb->content_type->subtype);
- } else {
- printf("(default)");
- }
- printf("\n");
- hb = hb->parent;
- }
- printf("\n");
- });
-
- switch (s->state) {
-
-#ifdef USE_FROM
- case HSCAN_INITIAL:
- if (s->scan_from) {
- h = g_malloc0(sizeof(*h));
- h->boundary = g_strdup("From ");
- h->boundarylen = strlen(h->boundary);
- h->boundarylenfinal = h->boundarylen;
- h->from_line = g_byte_array_new();
- folder_push_part(s, h);
- s->state = HSCAN_PRE_FROM;
- } else {
- s->start_of_from = -1;
- goto scan_header;
- }
-
- case HSCAN_PRE_FROM:
-
- h = s->parts;
- do {
- hb = folder_scan_content(s, &state, databuffer, datalength);
- if (s->scan_pre_from && *datalength > 0) {
- d(printf("got pre-from content %d bytes\n", *datalength));
- return;
- }
- } 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->from_line);
- h->savestate = HSCAN_INITIAL;
- s->state = HSCAN_FROM;
- } else {
- folder_pull_part(s);
- s->state = HSCAN_EOF;
- }
- return;
-#else
- case HSCAN_INITIAL:
- case HSCAN_PRE_FROM:
-#endif /* !USE_FROM */
-
- scan_header:
- 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->boundarylenfinal = h->boundarylen+2;
- h->boundary = g_malloc(h->boundarylen+3);
- sprintf(h->boundary, "--%s--", bound);
- type = HSCAN_MULTIPART;
- } else {
- header_content_type_unref(ct);
- ct = header_content_type_decode("text/plain");
-/* We can't quite do this, as it will mess up all the offsets ... */
-/* header_raw_replace(&h->headers, "Content-Type", "text/plain", offset);*/
- g_warning("Multipart with no boundary, treating as text/plain");
- }
- } else if (!strcasecmp(ct->type, "message")) {
- if (!strcasecmp(ct->subtype, "rfc822")
- || !strcasecmp(ct->subtype, "news")
- /*|| !strcasecmp(ct->subtype, "partial")*/) {
- type = HSCAN_MESSAGE;
- }
- }
- } else {
- /* make the default type for multipart/digest be message/rfc822 */
- if ((s->parts
- && header_content_type_is(s->parts->content_type, "multipart", "digest"))) {
- ct = header_content_type_decode("message/rfc822");
- type = HSCAN_MESSAGE;
- d(printf("parent was multipart/digest, autoupgrading to message/rfc822?\n"));
- /* maybe we should do this too?
- header_raw_append_parse(&h->headers, "Content-Type: message/rfc822", -1);*/
- }
- }
- 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);
-
- d(printf ("\n\nOriginal content: '"));
- d(fwrite(*databuffer, sizeof(char), *datalength, stdout));
- d(printf("'\n"));
-
- if (*datalength > 0) {
- while (f) {
- camel_mime_filter_filter(f->filter, *databuffer, *datalength, presize,
- databuffer, datalength, &presize);
- d(printf ("Filtered content (%s): '",
- camel_type_to_name(((CamelObject *)f->filter)->s.type)));
- d(fwrite(*databuffer, sizeof(char), *datalength, stdout));
- d(printf("'\n"));
- f = f->next;
- }
- return;
- }
- } while (hb == h && *datalength > 0);
-
- /* check for any filter completion data */
- if (*datalength > 0) {
- while (f) {
- camel_mime_filter_complete(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) {
- /* instead of a new state, we'll just store it locally and provide
- an accessor function */
- d(printf("Multipart %s Content %p: '%.*s'\n",
- h->prestage>0?"post":"pre", h, *datalength, *databuffer));
- if (h->prestage > 0) {
- if (h->posttext == NULL)
- h->posttext = g_byte_array_new();
- g_byte_array_append(h->posttext, *databuffer, *datalength);
- } else {
- if (h->pretext == NULL)
- h->pretext = g_byte_array_new();
- g_byte_array_append(h->pretext, *databuffer, *datalength);
- }
- }
- } while (hb==h && *datalength>0);
- h->prestage++;
- if (*datalength==0 && hb==h) {
- d(printf("got boundary: %s\n", hb->boundary));
- folder_scan_skip_line(s, NULL);
- 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;
-}
-
-/* drops the current state back one */
-static void
-folder_scan_drop_step(struct _header_scan_state *s)
-{
- switch (s->state) {
- case HSCAN_INITIAL:
- case HSCAN_EOF:
- return;
-
- case HSCAN_FROM:
- case HSCAN_PRE_FROM:
- s->state = HSCAN_INITIAL;
- folder_pull_part(s);
- return;
-
- case HSCAN_MESSAGE:
- case HSCAN_HEADER:
- case HSCAN_MULTIPART:
-
- 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) {
- s->state &= ~HSCAN_END;
- }
- return;
- default:
- /* FIXME: not sure if this is entirely right */
- }
-}
-
-#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();
- folder_scan_init_with_fd(s, 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")) {
-#if 0
- folder_push_filter_charset(s, "UTF-8", charset);
-#endif
- } else {
- charset = NULL;
- }
- } else {
- charset = NULL;
- }
-
- encoding = header_raw_find(&s->parts->headers, "Content-transfer-encoding", 0);
- 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++);
-#if 0
- folder_push_filter_save(s, attachname);
-#endif
- g_free(attachname);
-#if 0
- folder_push_filter_mime(s, 0);
-#endif
- }
- if (encoding && !strncasecmp(encoding, " quoted-printable", 17)) {
- printf("adding quoted-printable filter\n");
- attachname = g_strdup_printf("attach.%d.%d", i, attach++);
-#if 0
- folder_push_filter_save(s, attachname);
-#endif
- g_free(attachname);
-#if 0
- folder_push_filter_mime(s, 1);
-#endif
- }
-
- break;
- case HSCAN_BODY:
- printf("got body %d '%.*s'\n", len, len, data);
- break;
- case HSCAN_BODY_END:
- printf("end body %d '%.*s'\n", len, len, data);
- if (encoding && !strncasecmp(encoding, " base64", 7)) {
- printf("removing filters\n");
-#if 0
- folder_filter_pull(s);
- folder_filter_pull(s);
-#endif
- }
- if (encoding && !strncasecmp(encoding, " quoted-printable", 17)) {
- printf("removing filters\n");
-#if 0
- folder_filter_pull(s);
- folder_filter_pull(s);
-#endif
- }
- if (charset) {
-#if 0
- folder_filter_pull(s);
-#endif
- charset = NULL;
- }
- encoding = NULL;
- break;
- default:
- break;
- }
- }
- folder_scan_close(s);
- close(fd);
- }
- return 0;
-}
-
-#endif /* STANDALONE */
-