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Diffstat (limited to 'camel/camel-mime-part-utils.c')
-rw-r--r-- | camel/camel-mime-part-utils.c | 388 |
1 files changed, 0 insertions, 388 deletions
diff --git a/camel/camel-mime-part-utils.c b/camel/camel-mime-part-utils.c deleted file mode 100644 index c7ee07f070..0000000000 --- a/camel/camel-mime-part-utils.c +++ /dev/null @@ -1,388 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; fill-column: 160 -*- */ -/* camel-mime-part-utils : Utility for mime parsing and so on - * - * Authors: Bertrand Guiheneuf <bertrand@helixcode.com> - * Michael Zucchi <notzed@ximian.com> - * Jeffrey Stedfast <fejj@ximian.com> - * - * Copyright 1999, 2000 Ximian, Inc. (www.ximian.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 - * USA - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <stdio.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> - -#include <gal/util/e-iconv.h> -#include <glib/gunicode.h> - -#include "string-utils.h" -#include "camel-mime-part-utils.h" -#include "camel-mime-message.h" -#include "camel-multipart.h" -#include "camel-multipart-signed.h" -#include "camel-multipart-encrypted.h" -#include "camel-seekable-substream.h" -#include "camel-stream-fs.h" -#include "camel-stream-filter.h" -#include "camel-stream-mem.h" -#include "camel-mime-filter-basic.h" -#include "camel-mime-filter-charset.h" -#include "camel-mime-filter-crlf.h" -#include "camel-mime-filter-save.h" -#include "camel-html-parser.h" -#include "camel-charset-map.h" - -#define d(x) /*(printf("%s(%d): ", __FILE__, __LINE__),(x)) - #include <stdio.h>*/ - -/* example: <META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> */ - -static const char * -check_html_charset(char *buffer, int length) -{ - CamelHTMLParser *hp; - const char *charset = NULL; - camel_html_parser_t state; - struct _header_content_type *ct; - - /* if we need to first base64/qp decode, do this here, sigh */ - hp = camel_html_parser_new(); - camel_html_parser_set_data(hp, buffer, length, TRUE); - - do { - const char *data; - int len; - const char *val; - - state = camel_html_parser_step(hp, &data, &len); - - /* example: <META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> */ - - switch(state) { - case CAMEL_HTML_PARSER_ELEMENT: - val = camel_html_parser_tag(hp); - d(printf("Got tag: %s\n", val)); - if (strcasecmp(val, "meta") == 0 - && (val = camel_html_parser_attr(hp, "http-equiv")) - && strcasecmp(val, "content-type") == 0 - && (val = camel_html_parser_attr(hp, "content")) - && (ct = header_content_type_decode(val))) { - charset = header_content_type_param(ct, "charset"); - charset = e_iconv_charset_name (charset); - header_content_type_unref(ct); - } - break; - default: - /* ignore everything else */ - break; - } - } while (charset == NULL && state != CAMEL_HTML_PARSER_EOF); - - camel_object_unref((CamelObject *)hp); - - return charset; -} - -static GByteArray * -convert_buffer (GByteArray *in, const char *to, const char *from) -{ - size_t inleft, outleft, outlen, converted = 0; - GByteArray *out = NULL; - const char *inbuf; - char *outbuf; - iconv_t cd; - - if (in->len == 0) - return g_byte_array_new(); - - d(printf("converting buffer from %s to %s:\n", from, to)); - d(fwrite(in->data, 1, (int)in->len, stdout)); - d(printf("\n")); - - cd = e_iconv_open(to, from); - if (cd == (iconv_t) -1) { - g_warning ("Cannot convert from '%s' to '%s': %s", from, to, strerror (errno)); - return NULL; - } - - outlen = in->len * 2 + 16; - out = g_byte_array_new (); - g_byte_array_set_size (out, outlen); - - inbuf = in->data; - inleft = in->len; - - do { - outbuf = out->data + converted; - outleft = outlen - converted; - - converted = e_iconv (cd, &inbuf, &inleft, &outbuf, &outleft); - if (converted == (size_t) -1) { - if (errno != E2BIG && errno != EINVAL) - goto fail; - } - - /* - * E2BIG There is not sufficient room at *outbuf. - * - * We just need to grow our outbuffer and try again. - */ - - converted = outbuf - (char *)out->data; - if (errno == E2BIG) { - outlen += inleft * 2 + 16; - out = g_byte_array_set_size (out, outlen); - outbuf = out->data + converted; - } - - } while (errno == E2BIG && inleft > 0); - - /* - * EINVAL An incomplete multibyte sequence has been encoun - * tered in the input. - * - * We'll just have to ignore it... - */ - - /* flush the iconv conversion */ - e_iconv (cd, NULL, NULL, &outbuf, &outleft); - - /* now set the true length on the GByteArray */ - converted = outbuf - (char *)out->data; - g_byte_array_set_size (out, converted); - - d(printf("converted data:\n")); - d(fwrite(out->data, 1, (int)out->len, stdout)); - d(printf("\n")); - - e_iconv_close (cd); - - return out; - - fail: - g_warning ("Cannot convert from '%s' to '%s': %s", from, to, strerror (errno)); - - g_byte_array_free (out, TRUE); - - e_iconv_close (cd); - - return NULL; -} - -/* We don't really use the charset argument except for debugging... */ -static gboolean -broken_windows_charset (GByteArray *buffer, const char *charset) -{ - register unsigned char *inptr; - unsigned char *inend; - - inptr = buffer->data; - inend = inptr + buffer->len; - - while (inptr < inend) { - register unsigned char c = *inptr++; - - if (c >= 128 && c <= 159) { - g_warning ("Encountered Windows charset parading as %s", charset); - return TRUE; - } - } - - return FALSE; -} - -static gboolean -is_7bit (GByteArray *buffer) -{ - register unsigned int i; - - for (i = 0; i < buffer->len; i++) - if (buffer->data[i] > 127) - return FALSE; - - return TRUE; -} - -/* simple data wrapper */ -static void -simple_data_wrapper_construct_from_parser (CamelDataWrapper *dw, CamelMimeParser *mp) -{ - CamelMimeFilter *fdec = NULL, *fcrlf = NULL; - CamelMimeFilterBasicType enctype = 0; - int len, decid = -1, crlfid = -1; - struct _header_content_type *ct; - const char *charset = NULL; - GByteArray *buffer; - char *encoding, *buf; - CamelStream *mem; - - d(printf ("simple_data_wrapper_construct_from_parser()\n")); - - /* first, work out conversion, if any, required, we dont care about what we dont know about */ - encoding = header_content_encoding_decode (camel_mime_parser_header (mp, "Content-Transfer-Encoding", NULL)); - if (encoding) { - if (!strcasecmp (encoding, "base64")) { - d(printf("Adding base64 decoder ...\n")); - enctype = CAMEL_MIME_FILTER_BASIC_BASE64_DEC; - } else if (!strcasecmp (encoding, "quoted-printable")) { - d(printf("Adding quoted-printable decoder ...\n")); - enctype = CAMEL_MIME_FILTER_BASIC_QP_DEC; - } else if (!strcasecmp (encoding, "x-uuencode")) { - d(printf("Adding uudecoder ...\n")); - enctype = CAMEL_MIME_FILTER_BASIC_UU_DEC; - } - g_free (encoding); - - if (enctype != 0) { - fdec = (CamelMimeFilter *)camel_mime_filter_basic_new_type(enctype); - decid = camel_mime_parser_filter_add (mp, fdec); - } - } - - /* If we're doing text, we also need to do CRLF->LF and may have to convert it to UTF8 as well. */ - ct = camel_mime_parser_content_type(mp); - if (header_content_type_is(ct, "text", "*")) { - charset = header_content_type_param(ct, "charset"); - charset = e_iconv_charset_name(charset); - - if (fdec) { - d(printf("Adding CRLF conversion filter\n")); - fcrlf = (CamelMimeFilter *)camel_mime_filter_crlf_new(CAMEL_MIME_FILTER_CRLF_DECODE, - CAMEL_MIME_FILTER_CRLF_MODE_CRLF_ONLY); - crlfid = camel_mime_parser_filter_add(mp, fcrlf); - } - } - - /* read in the entire content */ - buffer = g_byte_array_new(); - while (camel_mime_parser_step(mp, &buf, &len) != HSCAN_BODY_END) { - d(printf("appending o/p data: %d: %.*s\n", len, len, buf)); - g_byte_array_append(buffer, buf, len); - } - - /* Possible Lame Mailer Alert... check the META tags for a charset */ - if (!charset && header_content_type_is (ct, "text", "html")) - charset = check_html_charset(buffer->data, buffer->len); - - /* if we need to do charset conversion, see if we can/it works/etc */ - if (charset && !(strcasecmp (charset, "us-ascii") == 0 - || strcasecmp (charset, "utf-8") == 0 - || strncasecmp (charset, "x-", 2) == 0)) { - GByteArray *out; - - /* You often see Microsoft Windows users announcing their texts - * as being in ISO-8859-1 even when in fact they contain funny - * characters from the Windows-CP1252 superset. - */ - if (!strncasecmp (charset, "iso-8859", 8)) { - /* check for Windows-specific chars... */ - if (broken_windows_charset (buffer, charset)) { - charset = camel_charset_iso_to_windows (charset); - charset = e_iconv_charset_name (charset); - } - } - - out = convert_buffer (buffer, "UTF-8", charset); - if (out) { - /* converted ok, use this data instead */ - g_byte_array_free(buffer, TRUE); - buffer = out; - } else { - /* else failed to convert, leave as raw? */ - g_warning("Storing text as raw, unknown charset '%s' or invalid format", charset); - dw->rawtext = TRUE; - } - } else if (header_content_type_is (ct, "text", "*")) { - if (charset == NULL) { - /* check that it's 7bit */ - dw->rawtext = !is_7bit (buffer); - } else if (!strncasecmp (charset, "x-", 2)) { - /* we're not even going to bother trying to convert, so set the - rawtext bit to TRUE and let the mailer deal with it. */ - dw->rawtext = TRUE; - } else if (!strcasecmp (charset, "utf-8")) { - /* check that it is valid utf8 */ - dw->rawtext = !g_utf8_validate (buffer->data, buffer->len, NULL); - } - } - - d(printf("message part kept in memory!\n")); - - mem = camel_stream_mem_new_with_byte_array(buffer); - camel_data_wrapper_construct_from_stream(dw, mem); - camel_object_unref((CamelObject *)mem); - - camel_mime_parser_filter_remove(mp, decid); - camel_mime_parser_filter_remove(mp, crlfid); - - if (fdec) - camel_object_unref((CamelObject *)fdec); - if (fcrlf) - camel_object_unref((CamelObject *)fcrlf); -} - -/* This replaces the data wrapper repository ... and/or could be replaced by it? */ -void -camel_mime_part_construct_content_from_parser (CamelMimePart *dw, CamelMimeParser *mp) -{ - CamelDataWrapper *content = NULL; - - switch (camel_mime_parser_state (mp)) { - case HSCAN_HEADER: - d(printf("Creating body part\n")); - /* multipart/signed is some fucked up type that we must treat as binary data, fun huh, idiots. */ - if (header_content_type_is (camel_mime_parser_content_type (mp), "multipart", "signed")) { - content = (CamelDataWrapper *) camel_multipart_signed_new (); - camel_multipart_construct_from_parser ((CamelMultipart *) content, mp); - } else { - content = camel_data_wrapper_new (); - simple_data_wrapper_construct_from_parser (content, mp); - } - break; - case HSCAN_MESSAGE: - d(printf("Creating message part\n")); - content = (CamelDataWrapper *) camel_mime_message_new (); - camel_mime_part_construct_from_parser ((CamelMimePart *)content, mp); - break; - case HSCAN_MULTIPART: - d(printf("Creating multi-part\n")); - if (header_content_type_is (camel_mime_parser_content_type (mp), "multipart", "encrypted")) - content = (CamelDataWrapper *) camel_multipart_encrypted_new (); - else if (header_content_type_is (camel_mime_parser_content_type (mp), "multipart", "signed")) - content = (CamelDataWrapper *) camel_multipart_signed_new (); - else - content = (CamelDataWrapper *) camel_multipart_new (); - - camel_multipart_construct_from_parser((CamelMultipart *)content, mp); - d(printf("Created multi-part\n")); - break; - default: - g_warning("Invalid state encountered???: %d", camel_mime_parser_state (mp)); - } - if (content) { - /* would you believe you have to set this BEFORE you set the content object??? oh my god !!!! */ - camel_data_wrapper_set_mime_type_field (content, - camel_mime_part_get_content_type ((CamelMimePart *)dw)); - camel_medium_set_content_object ((CamelMedium *)dw, content); - camel_object_unref ((CamelObject *)content); - } -} |