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- /*-
- * Copyright 2016 Vsevolod Stakhov
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- #include "lua_common.h"
- #include "lua_url.h"
- #include "libmime/message.h"
- #include "libmime/lang_detection.h"
- #include "libstat/stat_api.h"
- #include "libcryptobox/cryptobox.h"
- #include "libutil/shingles.h"
-
- #include "contrib/uthash/utlist.h"
-
- /* Textpart methods */
- /***
- * @module rspamd_textpart
- * This module provides different methods to manipulate text parts data. Text parts
- * could be obtained from the `rspamd_task` by using of method `task:get_text_parts()`
- @example
- rspamd_config.R_EMPTY_IMAGE = function (task)
- parts = task:get_text_parts()
- if parts then
- for _,part in ipairs(parts) do
- if part:is_empty() then
- texts = task:get_texts()
- if texts then
- return true
- end
- return false
- end
- end
- end
- return false
- end
- */
-
- /***
- * @method text_part:is_utf()
- * Return TRUE if part is a valid utf text
- * @return {boolean} true if part is valid `UTF8` part
- */
- LUA_FUNCTION_DEF(textpart, is_utf);
-
- /***
- * @method text_part:has_8bit_raw()
- * Return TRUE if a part has raw 8bit characters
- * @return {boolean} true if a part has raw 8bit characters
- */
- LUA_FUNCTION_DEF(textpart, has_8bit_raw);
-
- /***
- * @method text_part:has_8bit()
- * Return TRUE if a part has raw 8bit characters
- * @return {boolean} true if a part has encoded 8bit characters
- */
- LUA_FUNCTION_DEF(textpart, has_8bit);
-
- /***
- * @method text_part:get_content([type])
- * Get the text of the part (html tags stripped). Optional `type` defines type of content to get:
- * - `content` (default): utf8 content with HTML tags stripped and newlines preserved
- * - `content_oneline`: utf8 content with HTML tags and newlines stripped
- * - `raw`: raw content, not mime decoded nor utf8 converted
- * - `raw_parsed`: raw content, mime decoded, not utf8 converted
- * - `raw_utf`: raw content, mime decoded, utf8 converted (but with HTML tags and newlines)
- * @return {text} `UTF8` encoded content of the part (zero-copy if not converted to a lua string)
- */
- LUA_FUNCTION_DEF(textpart, get_content);
- /***
- * @method text_part:get_raw_content()
- * Get the original text of the part
- * @return {text} `UTF8` encoded content of the part (zero-copy if not converted to a lua string)
- */
- LUA_FUNCTION_DEF(textpart, get_raw_content);
- /***
- * @method text_part:get_content_oneline()
- *Get the text of the part (html tags and newlines stripped)
- * @return {text} `UTF8` encoded content of the part (zero-copy if not converted to a lua string)
- */
- LUA_FUNCTION_DEF(textpart, get_content_oneline);
- /***
- * @method text_part:get_length()
- * Get length of the text of the part
- * @return {integer} length of part in **bytes**
- */
- LUA_FUNCTION_DEF(textpart, get_length);
- /***
- * @method mime_part:get_raw_length()
- * Get length of the **raw** content of the part (e.g. HTML with tags unstripped)
- * @return {integer} length of part in **bytes**
- */
- LUA_FUNCTION_DEF(textpart, get_raw_length);
- /***
- * @method mime_part:get_urls_length()
- * Get length of the urls within the part
- * @return {integer} length of urls in **bytes**
- */
- LUA_FUNCTION_DEF(textpart, get_urls_length);
- /***
- * @method mime_part:get_lines_count()
- * Get lines number in the part
- * @return {integer} number of lines in the part
- */
- LUA_FUNCTION_DEF(textpart, get_lines_count);
- /***
- * @method mime_part:get_stats()
- * Returns a table with the following data:
- * - `lines`: number of lines
- * - `spaces`: number of spaces
- * - `double_spaces`: double spaces
- * - `empty_lines`: number of empty lines
- * - `non_ascii_characters`: number of non ascii characters
- * - `ascii_characters`: number of ascii characters
- * @return {table} table of stats
- */
- LUA_FUNCTION_DEF(textpart, get_stats);
- /***
- * @method mime_part:get_words_count()
- * Get words number in the part
- * @return {integer} number of words in the part
- */
- LUA_FUNCTION_DEF(textpart, get_words_count);
-
- /***
- * @method mime_part:get_words([how])
- * Get words in the part. Optional `how` argument defines type of words returned:
- * - `stem`: stemmed words (default)
- * - `norm`: normalised words (utf normalised + lowercased)
- * - `raw`: raw words in utf (if possible)
- * - `full`: list of tables, each table has the following fields:
- * - [1] - stemmed word
- * - [2] - normalised word
- * - [3] - raw word
- * - [4] - flags (table of strings)
- * @return {table/strings} words in the part
- */
- LUA_FUNCTION_DEF(textpart, get_words);
-
- /***
- * @method mime_part:filter_words(regexp, [how][, max]])
- * Filter words using some regexp:
- * - `stem`: stemmed words (default)
- * - `norm`: normalised words (utf normalised + lowercased)
- * - `raw`: raw words in utf (if possible)
- * - `full`: list of tables, each table has the following fields:
- * - [1] - stemmed word
- * - [2] - normalised word
- * - [3] - raw word
- * - [4] - flags (table of strings)
- * @param {rspamd_regexp} regexp regexp to match
- * @param {string} how what words to extract
- * @param {number} max maximum number of hits returned (all hits if <= 0 or nil)
- * @return {table/strings} words matching regexp
- */
- LUA_FUNCTION_DEF(textpart, filter_words);
-
- /***
- * @method text_part:is_empty()
- * Returns `true` if the specified part is empty
- * @return {bool} whether a part is empty
- */
- LUA_FUNCTION_DEF(textpart, is_empty);
- /***
- * @method text_part:is_html()
- * Returns `true` if the specified part has HTML content
- * @return {bool} whether a part is HTML part
- */
- LUA_FUNCTION_DEF(textpart, is_html);
- /***
- * @method text_part:get_html()
- * Returns html content of the specified part
- * @return {html} html content
- */
- LUA_FUNCTION_DEF(textpart, get_html);
- /***
- * @method text_part:get_language()
- * Returns the code of the most used unicode script in the text part. Does not work with raw parts
- * @return {string} short abbreviation (such as `ru`) for the script's language
- */
- LUA_FUNCTION_DEF(textpart, get_language);
-
- /***
- * @method text_part:get_charset()
- * Returns part real charset
- * @return {string} charset of the part
- */
- LUA_FUNCTION_DEF(textpart, get_charset);
- /***
- * @method text_part:get_languages()
- * Returns array of tables of all languages detected for a part:
- * - 'code': language code (short string)
- * - 'prob': logarithm of probability
- * @return {array|tables} all languages detected for the part
- */
- LUA_FUNCTION_DEF(textpart, get_languages);
- /***
- * @method text_part:get_fuzzy_hashes(mempool)
- * @param {rspamd_mempool} mempool - memory pool (usually task pool)
- * Returns direct hash of textpart as a string and array [1..32] of shingles each represented as a following table:
- * - [1] - 64 bit fuzzy hash represented as a string
- * - [2..4] - strings used to generate this hash
- * @return {string,array|tables} fuzzy hashes calculated
- */
- LUA_FUNCTION_DEF(textpart, get_fuzzy_hashes);
- /***
- * @method text_part:get_mimepart()
- * Returns the mime part object corresponding to this text part
- * @return {mimepart} mimepart object
- */
- LUA_FUNCTION_DEF(textpart, get_mimepart);
-
- static const struct luaL_reg textpartlib_m[] = {
- LUA_INTERFACE_DEF(textpart, is_utf),
- LUA_INTERFACE_DEF(textpart, has_8bit_raw),
- LUA_INTERFACE_DEF(textpart, has_8bit),
- LUA_INTERFACE_DEF(textpart, get_content),
- LUA_INTERFACE_DEF(textpart, get_raw_content),
- LUA_INTERFACE_DEF(textpart, get_content_oneline),
- LUA_INTERFACE_DEF(textpart, get_length),
- LUA_INTERFACE_DEF(textpart, get_raw_length),
- LUA_INTERFACE_DEF(textpart, get_urls_length),
- LUA_INTERFACE_DEF(textpart, get_lines_count),
- LUA_INTERFACE_DEF(textpart, get_words_count),
- LUA_INTERFACE_DEF(textpart, get_words),
- LUA_INTERFACE_DEF(textpart, filter_words),
- LUA_INTERFACE_DEF(textpart, is_empty),
- LUA_INTERFACE_DEF(textpart, is_html),
- LUA_INTERFACE_DEF(textpart, get_html),
- LUA_INTERFACE_DEF(textpart, get_language),
- LUA_INTERFACE_DEF(textpart, get_charset),
- LUA_INTERFACE_DEF(textpart, get_languages),
- LUA_INTERFACE_DEF(textpart, get_mimepart),
- LUA_INTERFACE_DEF(textpart, get_stats),
- LUA_INTERFACE_DEF(textpart, get_fuzzy_hashes),
- {"__tostring", rspamd_lua_class_tostring},
- {NULL, NULL}};
-
- /* Mimepart methods */
-
- /***
- * @module rspamd_mimepart
- * This module provides access to mime parts found in a message
- @example
- rspamd_config.MISSING_CONTENT_TYPE = function(task)
- local parts = task:get_parts()
- if parts and #parts > 1 then
- -- We have more than one part
- for _,p in ipairs(parts) do
- local ct = p:get_header('Content-Type')
- -- And some parts have no Content-Type header
- if not ct then
- return true
- end
- end
- end
- return false
- end
- */
-
- /***
- * @method mime_part:get_header(name[, case_sensitive])
- * Get decoded value of a header specified with optional case_sensitive flag.
- * By default headers are searched in caseless matter.
- * @param {string} name name of header to get
- * @param {boolean} case_sensitive case sensitiveness flag to search for a header
- * @return {string} decoded value of a header
- */
- LUA_FUNCTION_DEF(mimepart, get_header);
- /***
- * @method mime_part:get_header_raw(name[, case_sensitive])
- * Get raw value of a header specified with optional case_sensitive flag.
- * By default headers are searched in caseless matter.
- * @param {string} name name of header to get
- * @param {boolean} case_sensitive case sensitiveness flag to search for a header
- * @return {string} raw value of a header
- */
- LUA_FUNCTION_DEF(mimepart, get_header_raw);
- /***
- * @method mime_part:get_header_full(name[, case_sensitive])
- * Get raw value of a header specified with optional case_sensitive flag.
- * By default headers are searched in caseless matter. This method returns more
- * information about the header as a list of tables with the following structure:
- *
- * - `name` - name of a header
- * - `value` - raw value of a header
- * - `decoded` - decoded value of a header
- * - `tab_separated` - `true` if a header and a value are separated by `tab` character
- * - `empty_separator` - `true` if there are no separator between a header and a value
- * @param {string} name name of header to get
- * @param {boolean} case_sensitive case sensitiveness flag to search for a header
- * @return {list of tables} all values of a header as specified above
- @example
- function check_header_delimiter_tab(task, header_name)
- for _,rh in ipairs(task:get_header_full(header_name)) do
- if rh['tab_separated'] then return true end
- end
- return false
- end
- */
- LUA_FUNCTION_DEF(mimepart, get_header_full);
- /***
- * @method mimepart:get_header_count(name[, case_sensitive])
- * Lightweight version if you need just a header's count
- * * By default headers are searched in caseless matter.
- * @param {string} name name of header to get
- * @param {boolean} case_sensitive case sensitiveness flag to search for a header
- * @return {number} number of header's occurrences or 0 if not found
- */
- LUA_FUNCTION_DEF(mimepart, get_header_count);
-
- /***
- * @method mimepart:get_raw_headers()
- * Get all undecoded headers of a mime part as a string
- * @return {rspamd_text} all raw headers for a message as opaque text
- */
- LUA_FUNCTION_DEF(mimepart, get_raw_headers);
-
- /***
- * @method mimepart:get_headers()
- * Get all undecoded headers of a mime part as a string
- * @return {rspamd_text} all raw headers for a message as opaque text
- */
- LUA_FUNCTION_DEF(mimepart, get_headers);
-
- /***
- * @method mime_part:get_content()
- * Get the parsed content of part
- * @return {text} opaque text object (zero-copy if not casted to lua string)
- */
- LUA_FUNCTION_DEF(mimepart, get_content);
- /***
- * @method mime_part:get_raw_content()
- * Get the raw content of part
- * @return {text} opaque text object (zero-copy if not casted to lua string)
- */
- LUA_FUNCTION_DEF(mimepart, get_raw_content);
- /***
- * @method mime_part:get_length()
- * Get length of the content of the part
- * @return {integer} length of part in **bytes**
- */
- LUA_FUNCTION_DEF(mimepart, get_length);
- /***
- * @method mime_part:get_type()
- * Extract content-type string of the mime part
- * @return {string,string} content type in form 'type','subtype'
- */
- LUA_FUNCTION_DEF(mimepart, get_type);
-
- /***
- * @method mime_part:get_type_full()
- * Extract content-type string of the mime part with all attributes
- * @return {string,string,table} content type in form 'type','subtype', {attrs}
- */
- LUA_FUNCTION_DEF(mimepart, get_type_full);
-
- /***
- * @method mime_part:get_detected_type()
- * Extract content-type string of the mime part. Use lua_magic detection
- * @return {string,string} content type in form 'type','subtype'
- */
- LUA_FUNCTION_DEF(mimepart, get_detected_type);
-
- /***
- * @method mime_part:get_detected_type_full()
- * Extract content-type string of the mime part with all attributes. Use lua_magic detection
- * @return {string,string,table} content type in form 'type','subtype', {attrs}
- */
- LUA_FUNCTION_DEF(mimepart, get_detected_type_full);
-
- /***
- * @method mime_part:get_detected_ext()
- * Returns a msdos extension name according to lua_magic detection
- * @return {string} detected extension (see lua_magic.types)
- */
- LUA_FUNCTION_DEF(mimepart, get_detected_ext);
-
- /***
- * @method mime_part:get_cte()
- * Extract content-transfer-encoding for a part
- * @return {string} content transfer encoding (e.g. `base64` or `7bit`)
- */
- LUA_FUNCTION_DEF(mimepart, get_cte);
-
- /***
- * @method mime_part:get_filename()
- * Extract filename associated with mime part if it is an attachment
- * @return {string} filename or `nil` if no file is associated with this part
- */
- LUA_FUNCTION_DEF(mimepart, get_filename);
- /***
- * @method mime_part:is_image()
- * Returns true if mime part is an image
- * @return {bool} true if a part is an image
- */
- LUA_FUNCTION_DEF(mimepart, is_image);
- /***
- * @method mime_part:get_image()
- * Returns rspamd_image structure associated with this part. This structure has
- * the following methods:
- *
- * * `get_width` - return width of an image in pixels
- * * `get_height` - return height of an image in pixels
- * * `get_type` - return string representation of image's type (e.g. 'jpeg')
- * * `get_filename` - return string with image's file name
- * * `get_size` - return size in bytes
- * @return {rspamd_image} image structure or nil if a part is not an image
- */
- LUA_FUNCTION_DEF(mimepart, get_image);
- /***
- * @method mime_part:is_archive()
- * Returns true if mime part is an archive
- * @return {bool} true if a part is an archive
- */
- LUA_FUNCTION_DEF(mimepart, is_archive);
- /***
- * @method mime_part:is_attachment()
- * Returns true if mime part looks like an attachment
- * @return {bool} true if a part looks like an attachment
- */
- LUA_FUNCTION_DEF(mimepart, is_attachment);
-
- /***
- * @method mime_part:get_archive()
- * Returns rspamd_archive structure associated with this part. This structure has
- * the following methods:
- *
- * * `get_files` - return list of strings with filenames inside archive
- * * `get_files_full` - return list of tables with all information about files
- * * `is_encrypted` - return true if an archive is encrypted
- * * `get_type` - return string representation of image's type (e.g. 'zip')
- * * `get_filename` - return string with archive's file name
- * * `get_size` - return size in bytes
- * @return {rspamd_archive} archive structure or nil if a part is not an archive
- */
- LUA_FUNCTION_DEF(mimepart, get_archive);
- /***
- * @method mime_part:is_multipart()
- * Returns true if mime part is a multipart part
- * @return {bool} true if a part is is a multipart part
- */
- LUA_FUNCTION_DEF(mimepart, is_multipart);
- /***
- * @method mime_part:is_message()
- * Returns true if mime part is a message part (message/rfc822)
- * @return {bool} true if a part is is a message part
- */
- LUA_FUNCTION_DEF(mimepart, is_message);
- /***
- * @method mime_part:get_boundary()
- * Returns boundary for a part (extracted from parent multipart for normal parts and
- * from the part itself for multipart)
- * @return {string} boundary value or nil
- */
- LUA_FUNCTION_DEF(mimepart, get_boundary);
-
- /***
- * @method mime_part:get_enclosing_boundary()
- * Returns an enclosing boundary for a part even for multiparts. For normal parts
- * this method is identical to `get_boundary`
- * @return {string} boundary value or nil
- */
- LUA_FUNCTION_DEF(mimepart, get_enclosing_boundary);
-
- /***
- * @method mime_part:get_children()
- * Returns rspamd_mimepart table of part's childer. Returns nil if mime part is not multipart
- * or a message part.
- * @return {rspamd_mimepart} table of children
- */
- LUA_FUNCTION_DEF(mimepart, get_children);
- /***
- * @method mime_part:is_text()
- * Returns true if mime part is a text part
- * @return {bool} true if a part is a text part
- */
- LUA_FUNCTION_DEF(mimepart, is_text);
- /***
- * @method mime_part:get_text()
- * Returns rspamd_textpart structure associated with this part.
- * @return {rspamd_textpart} textpart structure or nil if a part is not an text
- */
- LUA_FUNCTION_DEF(mimepart, get_text);
-
- /***
- * @method mime_part:get_digest()
- * Returns the unique digest for this mime part
- * @return {string} 128 characters hex string with digest of the part
- */
- LUA_FUNCTION_DEF(mimepart, get_digest);
-
- /***
- * @method mime_part:get_id()
- * Returns the order of the part in parts list
- * @return {number} index of the part (starting from 1 as it is Lua API)
- */
- LUA_FUNCTION_DEF(mimepart, get_id);
- /***
- * @method mime_part:is_broken()
- * Returns true if mime part has incorrectly specified content type
- * @return {bool} true if a part has bad content type
- */
- LUA_FUNCTION_DEF(mimepart, is_broken);
- /***
- * @method mime_part:headers_foreach(callback, [params])
- * This method calls `callback` for each header that satisfies some condition.
- * By default, all headers are iterated unless `callback` returns `true`. Nil or
- * false means continue of iterations.
- * Params could be as following:
- *
- * - `full`: header value is full table of all attributes @see task:get_header_full for details
- * - `regexp`: return headers that satisfies the specified regexp
- * @param {function} callback function from header name and header value
- * @param {table} params optional parameters
- */
- LUA_FUNCTION_DEF(mimepart, headers_foreach);
- /***
- * @method mime_part:get_parent()
- * Returns parent part for this part
- * @return {rspamd_mimepart} parent part or nil
- */
- LUA_FUNCTION_DEF(mimepart, get_parent);
-
- /***
- * @method mime_part:get_specific()
- * Returns specific lua content for this part
- * @return {any} specific lua content
- */
- LUA_FUNCTION_DEF(mimepart, get_specific);
-
- /***
- * @method mime_part:set_specific(<any>)
- * Sets a specific content for this part
- * @return {any} previous specific lua content (or nil)
- */
- LUA_FUNCTION_DEF(mimepart, set_specific);
-
- /***
- * @method mime_part:is_specific(<any>)
- * Returns true if part has specific lua content
- * @return {boolean} flag
- */
- LUA_FUNCTION_DEF(mimepart, is_specific);
-
- /***
- * @method mime_part:get_urls([need_emails|list_protos][, need_images])
- * Get all URLs found in a mime part. Telephone urls and emails are not included unless explicitly asked in `list_protos`
- * @param {boolean} need_emails if `true` then return also email urls, this can be a comma separated string of protocols desired or a table (e.g. `mailto` or `telephone`)
- * @param {boolean} need_images return urls from images (<img src=...>) as well
- * @return {table rspamd_url} list of all urls found
- */
- LUA_FUNCTION_DEF(mimepart, get_urls);
-
- static const struct luaL_reg mimepartlib_m[] = {
- LUA_INTERFACE_DEF(mimepart, get_content),
- LUA_INTERFACE_DEF(mimepart, get_raw_content),
- LUA_INTERFACE_DEF(mimepart, get_length),
- LUA_INTERFACE_DEF(mimepart, get_type),
- LUA_INTERFACE_DEF(mimepart, get_type_full),
- LUA_INTERFACE_DEF(mimepart, get_detected_type),
- LUA_INTERFACE_DEF(mimepart, get_detected_ext),
- LUA_INTERFACE_DEF(mimepart, get_detected_type_full),
- LUA_INTERFACE_DEF(mimepart, get_cte),
- LUA_INTERFACE_DEF(mimepart, get_filename),
- LUA_INTERFACE_DEF(mimepart, get_boundary),
- LUA_INTERFACE_DEF(mimepart, get_enclosing_boundary),
- LUA_INTERFACE_DEF(mimepart, get_header),
- LUA_INTERFACE_DEF(mimepart, get_header_raw),
- LUA_INTERFACE_DEF(mimepart, get_header_full),
- LUA_INTERFACE_DEF(mimepart, get_header_count),
- LUA_INTERFACE_DEF(mimepart, get_raw_headers),
- LUA_INTERFACE_DEF(mimepart, get_headers),
- LUA_INTERFACE_DEF(mimepart, is_image),
- LUA_INTERFACE_DEF(mimepart, get_image),
- LUA_INTERFACE_DEF(mimepart, is_archive),
- LUA_INTERFACE_DEF(mimepart, get_archive),
- LUA_INTERFACE_DEF(mimepart, is_multipart),
- LUA_INTERFACE_DEF(mimepart, is_message),
- LUA_INTERFACE_DEF(mimepart, get_children),
- LUA_INTERFACE_DEF(mimepart, get_parent),
- LUA_INTERFACE_DEF(mimepart, get_urls),
- LUA_INTERFACE_DEF(mimepart, is_text),
- LUA_INTERFACE_DEF(mimepart, is_broken),
- LUA_INTERFACE_DEF(mimepart, is_attachment),
- LUA_INTERFACE_DEF(mimepart, get_text),
- LUA_INTERFACE_DEF(mimepart, get_digest),
- LUA_INTERFACE_DEF(mimepart, get_id),
- LUA_INTERFACE_DEF(mimepart, headers_foreach),
- LUA_INTERFACE_DEF(mimepart, get_specific),
- LUA_INTERFACE_DEF(mimepart, set_specific),
- LUA_INTERFACE_DEF(mimepart, is_specific),
- {"__tostring", rspamd_lua_class_tostring},
- {NULL, NULL}};
-
-
- static struct rspamd_mime_text_part *
- lua_check_textpart(lua_State *L)
- {
- void *ud = rspamd_lua_check_udata(L, 1, rspamd_textpart_classname);
- luaL_argcheck(L, ud != NULL, 1, "'textpart' expected");
- return ud ? *((struct rspamd_mime_text_part **) ud) : NULL;
- }
-
- static struct rspamd_mime_part *
- lua_check_mimepart(lua_State *L)
- {
- void *ud = rspamd_lua_check_udata(L, 1, rspamd_mimepart_classname);
- luaL_argcheck(L, ud != NULL, 1, "'mimepart' expected");
- return ud ? *((struct rspamd_mime_part **) ud) : NULL;
- }
-
-
- static int
- lua_textpart_is_utf(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
-
- if (part == NULL || IS_TEXT_PART_EMPTY(part)) {
- lua_pushboolean(L, FALSE);
- return 1;
- }
-
- lua_pushboolean(L, IS_TEXT_PART_UTF(part));
-
- return 1;
- }
-
-
- static int
- lua_textpart_has_8bit_raw(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
-
- if (part) {
- if (part->flags & RSPAMD_MIME_TEXT_PART_FLAG_8BIT_RAW) {
- lua_pushboolean(L, TRUE);
- }
- else {
- lua_pushboolean(L, FALSE);
- }
- }
- else {
- return luaL_error(L, "invalid arguments");
- }
-
- return 1;
- }
-
- static int
- lua_textpart_has_8bit(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
-
- if (part) {
- if (part->flags & RSPAMD_MIME_TEXT_PART_FLAG_8BIT_ENCODED) {
- lua_pushboolean(L, TRUE);
- }
- else {
- lua_pushboolean(L, FALSE);
- }
- }
- else {
- return luaL_error(L, "invalid arguments");
- }
-
- return 1;
- }
-
-
- static int
- lua_textpart_get_content(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
- struct rspamd_lua_text *t;
- gsize len;
- const char *start, *type = NULL;
-
- if (part == NULL) {
- lua_pushnil(L);
- return 1;
- }
-
- if (lua_type(L, 2) == LUA_TSTRING) {
- type = lua_tostring(L, 2);
- }
-
- if (!type) {
- if (IS_TEXT_PART_EMPTY(part)) {
- lua_pushnil(L);
- return 1;
- }
- start = part->utf_content.begin;
- len = part->utf_content.len;
- }
- else if (strcmp(type, "content") == 0) {
- if (IS_TEXT_PART_EMPTY(part)) {
- lua_pushnil(L);
- return 1;
- }
-
- start = part->utf_content.begin;
- len = part->utf_content.len;
- }
- else if (strcmp(type, "content_oneline") == 0) {
- if (IS_TEXT_PART_EMPTY(part)) {
- lua_pushnil(L);
- return 1;
- }
-
- start = part->utf_stripped_content->data;
- len = part->utf_stripped_content->len;
- }
- else if (strcmp(type, "raw_parsed") == 0) {
- if (part->parsed.len == 0) {
- lua_pushnil(L);
- return 1;
- }
-
- start = part->parsed.begin;
- len = part->parsed.len;
- }
- else if (strcmp(type, "raw_utf") == 0) {
- if (part->utf_raw_content == NULL || part->utf_raw_content->len == 0) {
- lua_pushnil(L);
- return 1;
- }
-
- start = part->utf_raw_content->data;
- len = part->utf_raw_content->len;
- }
- else if (strcmp(type, "raw") == 0) {
- if (part->raw.len == 0) {
- lua_pushnil(L);
- return 1;
- }
-
- start = part->raw.begin;
- len = part->raw.len;
- }
- else {
- return luaL_error(L, "invalid content type: %s", type);
- }
-
- t = lua_newuserdata(L, sizeof(*t));
- rspamd_lua_setclass(L, rspamd_text_classname, -1);
-
- t->start = start;
- t->len = len;
- t->flags = 0;
-
- return 1;
- }
-
- static int
- lua_textpart_get_raw_content(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
- struct rspamd_lua_text *t;
-
- if (part == NULL || IS_TEXT_PART_EMPTY(part)) {
- lua_pushnil(L);
- return 1;
- }
-
- t = lua_newuserdata(L, sizeof(*t));
- rspamd_lua_setclass(L, rspamd_text_classname, -1);
- t->start = part->raw.begin;
- t->len = part->raw.len;
- t->flags = 0;
-
- return 1;
- }
-
- static int
- lua_textpart_get_content_oneline(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
-
- if (part == NULL || IS_TEXT_PART_EMPTY(part)) {
- lua_pushnil(L);
- return 1;
- }
-
- lua_new_text(L, part->utf_stripped_content->data, part->utf_stripped_content->len, FALSE);
-
- return 1;
- }
-
- static int
- lua_textpart_get_length(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
-
- if (part == NULL) {
- lua_pushnil(L);
- return 1;
- }
-
- if (IS_TEXT_PART_EMPTY(part) || part->utf_content.len == 0) {
- lua_pushinteger(L, 0);
- }
- else {
- lua_pushinteger(L, part->utf_content.len);
- }
-
- return 1;
- }
-
- static int
- lua_textpart_get_raw_length(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
-
- if (part == NULL) {
- lua_pushnil(L);
- return 1;
- }
-
- lua_pushinteger(L, part->raw.len);
-
- return 1;
- }
-
- static int
- lua_textpart_get_urls_length(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
- GList *cur;
- unsigned int total = 0;
- struct rspamd_process_exception *ex;
-
- if (part == NULL) {
- lua_pushnil(L);
- return 1;
- }
-
- for (cur = part->exceptions; cur != NULL; cur = g_list_next(cur)) {
- ex = cur->data;
-
- if (ex->type == RSPAMD_EXCEPTION_URL) {
- total += ex->len;
- }
- }
-
- lua_pushinteger(L, total);
-
- return 1;
- }
-
- static int
- lua_textpart_get_lines_count(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
-
- if (part == NULL) {
- lua_pushnil(L);
- return 1;
- }
-
- if (IS_TEXT_PART_EMPTY(part)) {
- lua_pushinteger(L, 0);
- }
- else {
- lua_pushinteger(L, part->nlines);
- }
-
- return 1;
- }
-
- static int
- lua_textpart_get_words_count(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
-
- if (part == NULL) {
- lua_pushnil(L);
- return 1;
- }
-
- if (IS_TEXT_PART_EMPTY(part) || part->utf_words == NULL) {
- lua_pushinteger(L, 0);
- }
- else {
- lua_pushinteger(L, part->nwords);
- }
-
- return 1;
- }
-
- static inline enum rspamd_lua_words_type
- word_extract_type_from_string(const char *how_str)
- {
- enum rspamd_lua_words_type how = RSPAMD_LUA_WORDS_MAX;
-
- if (strcmp(how_str, "stem") == 0) {
- how = RSPAMD_LUA_WORDS_STEM;
- }
- else if (strcmp(how_str, "norm") == 0) {
- how = RSPAMD_LUA_WORDS_NORM;
- }
- else if (strcmp(how_str, "raw") == 0) {
- how = RSPAMD_LUA_WORDS_RAW;
- }
- else if (strcmp(how_str, "full") == 0) {
- how = RSPAMD_LUA_WORDS_FULL;
- }
-
- return how;
- }
-
- static int
- lua_textpart_get_words(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
- enum rspamd_lua_words_type how = RSPAMD_LUA_WORDS_STEM;
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (IS_TEXT_PART_EMPTY(part) || part->utf_words == NULL) {
- lua_createtable(L, 0, 0);
- }
- else {
- if (lua_type(L, 2) == LUA_TSTRING) {
- const char *how_str = lua_tostring(L, 2);
-
- how = word_extract_type_from_string(how_str);
-
- if (how == RSPAMD_LUA_WORDS_MAX) {
- return luaL_error(L, "invalid extraction type: %s", how_str);
- }
- }
-
- return rspamd_lua_push_words(L, part->utf_words, how);
- }
-
- return 1;
- }
-
- static int
- lua_textpart_filter_words(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
- struct rspamd_lua_regexp *re = lua_check_regexp(L, 2);
- int lim = -1;
- enum rspamd_lua_words_type how = RSPAMD_LUA_WORDS_STEM;
-
- if (part == NULL || re == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (IS_TEXT_PART_EMPTY(part) || part->utf_words == NULL) {
- lua_createtable(L, 0, 0);
- }
- else {
- if (lua_type(L, 3) == LUA_TSTRING) {
- const char *how_str = lua_tostring(L, 3);
-
- how = word_extract_type_from_string(how_str);
-
- if (how == RSPAMD_LUA_WORDS_MAX) {
- return luaL_error(L, "invalid extraction type: %s", how_str);
- }
- }
-
- if (lua_type(L, 4) == LUA_TNUMBER) {
- lim = lua_tointeger(L, 4);
- }
-
- unsigned int cnt, i;
-
- lua_createtable(L, 8, 0);
-
- for (i = 0, cnt = 1; i < part->utf_words->len; i++) {
- rspamd_stat_token_t *w = &g_array_index(part->utf_words,
- rspamd_stat_token_t, i);
-
- switch (how) {
- case RSPAMD_LUA_WORDS_STEM:
- if (w->stemmed.len > 0) {
- if (rspamd_regexp_match(re->re, w->stemmed.begin,
- w->stemmed.len, FALSE)) {
- lua_pushlstring(L, w->stemmed.begin, w->stemmed.len);
- lua_rawseti(L, -2, cnt++);
- }
- }
- break;
- case RSPAMD_LUA_WORDS_NORM:
- if (w->normalized.len > 0) {
- if (rspamd_regexp_match(re->re, w->normalized.begin,
- w->normalized.len, FALSE)) {
- lua_pushlstring(L, w->normalized.begin, w->normalized.len);
- lua_rawseti(L, -2, cnt++);
- }
- }
- break;
- case RSPAMD_LUA_WORDS_RAW:
- if (w->original.len > 0) {
- if (rspamd_regexp_match(re->re, w->original.begin,
- w->original.len, TRUE)) {
- lua_pushlstring(L, w->original.begin, w->original.len);
- lua_rawseti(L, -2, cnt++);
- }
- }
- break;
- case RSPAMD_LUA_WORDS_FULL:
- if (rspamd_regexp_match(re->re, w->normalized.begin,
- w->normalized.len, FALSE)) {
- rspamd_lua_push_full_word(L, w);
- /* Push to the resulting vector */
- lua_rawseti(L, -2, cnt++);
- }
- break;
- default:
- break;
- }
-
- if (lim > 0 && cnt >= lim) {
- break;
- }
- }
- }
-
- return 1;
- }
-
- static int
- lua_textpart_is_empty(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
-
- if (part == NULL) {
- lua_pushnil(L);
- return 1;
- }
-
- lua_pushboolean(L, IS_TEXT_PART_EMPTY(part));
-
- return 1;
- }
-
- static int
- lua_textpart_is_html(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
-
- if (part == NULL) {
- lua_pushnil(L);
- return 1;
- }
-
- lua_pushboolean(L, IS_TEXT_PART_HTML(part));
-
- return 1;
- }
-
- static int
- lua_textpart_get_html(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
- struct html_content **phc;
-
- if (part == NULL || part->html == NULL) {
- lua_pushnil(L);
- }
- else {
- phc = lua_newuserdata(L, sizeof(*phc));
- rspamd_lua_setclass(L, rspamd_html_classname, -1);
- *phc = part->html;
- }
-
- return 1;
- }
-
- static int
- lua_textpart_get_language(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
-
- if (part != NULL) {
- if (part->language != NULL && part->language[0] != '\0') {
- lua_pushstring(L, part->language);
- return 1;
- }
- else {
- lua_pushnil(L);
- }
- }
- else {
- return luaL_error(L, "invalid arguments");
- }
-
- return 1;
- }
-
- static int
- lua_textpart_get_charset(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
-
- if (part != NULL) {
- if (part->real_charset != NULL) {
- lua_pushstring(L, part->real_charset);
- return 1;
- }
- else {
- lua_pushnil(L);
- }
- }
- else {
- return luaL_error(L, "invalid arguments");
- }
-
- return 1;
- }
-
- static int
- lua_textpart_get_languages(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
- unsigned int i;
- struct rspamd_lang_detector_res *cur;
-
- if (part != NULL) {
- if (part->languages != NULL) {
- lua_createtable(L, part->languages->len, 0);
-
- PTR_ARRAY_FOREACH(part->languages, i, cur)
- {
- lua_createtable(L, 0, 2);
- lua_pushstring(L, "code");
- lua_pushstring(L, cur->lang);
- lua_settable(L, -3);
- lua_pushstring(L, "prob");
- lua_pushnumber(L, cur->prob);
- lua_settable(L, -3);
-
- lua_rawseti(L, -2, i + 1);
- }
- }
- else {
- lua_newtable(L);
- }
- }
- else {
- luaL_error(L, "invalid arguments");
- }
-
- return 1;
- }
-
- struct lua_shingle_data {
- uint64_t hash;
- rspamd_ftok_t t1;
- rspamd_ftok_t t2;
- rspamd_ftok_t t3;
- };
-
- struct lua_shingle_filter_cbdata {
- struct rspamd_mime_text_part *part;
- rspamd_mempool_t *pool;
- };
-
- #define STORE_TOKEN(i, t) \
- do { \
- if ((i) < part->utf_words->len) { \
- word = &g_array_index(part->utf_words, rspamd_stat_token_t, (i)); \
- sd->t.begin = word->stemmed.begin; \
- sd->t.len = word->stemmed.len; \
- } \
- } while (0)
-
- static uint64_t
- lua_shingles_filter(uint64_t *input, gsize count,
- int shno, const unsigned char *key, gpointer ud)
- {
- uint64_t minimal = G_MAXUINT64;
- gsize i, min_idx = 0;
- struct lua_shingle_data *sd;
- rspamd_stat_token_t *word;
- struct lua_shingle_filter_cbdata *cbd = (struct lua_shingle_filter_cbdata *) ud;
- struct rspamd_mime_text_part *part;
-
- part = cbd->part;
-
- for (i = 0; i < count; i++) {
- if (minimal > input[i]) {
- minimal = input[i];
- min_idx = i;
- }
- }
-
- sd = rspamd_mempool_alloc0(cbd->pool, sizeof(*sd));
- sd->hash = minimal;
-
-
- STORE_TOKEN(min_idx, t1);
- STORE_TOKEN(min_idx + 1, t2);
- STORE_TOKEN(min_idx + 2, t3);
-
- return GPOINTER_TO_SIZE(sd);
- }
-
- #undef STORE_TOKEN
-
- static int
- lua_textpart_get_fuzzy_hashes(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
- rspamd_mempool_t *pool = rspamd_lua_check_mempool(L, 2);
- unsigned char key[rspamd_cryptobox_HASHBYTES], digest[rspamd_cryptobox_HASHBYTES],
- hexdigest[rspamd_cryptobox_HASHBYTES * 2 + 1], numbuf[64];
- struct rspamd_shingle *sgl;
- unsigned int i;
- struct lua_shingle_data *sd;
- rspamd_cryptobox_hash_state_t st;
- rspamd_stat_token_t *word;
- struct lua_shingle_filter_cbdata cbd;
-
-
- if (part == NULL || pool == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (IS_TEXT_PART_EMPTY(part) || part->utf_words == NULL) {
- lua_pushnil(L);
- lua_pushnil(L);
- }
- else {
- /* TODO: add keys and algorithms support */
- rspamd_cryptobox_hash(key, "rspamd", strlen("rspamd"), NULL, 0);
-
- /* TODO: add short text support */
-
- /* Calculate direct hash */
- rspamd_cryptobox_hash_init(&st, key, rspamd_cryptobox_HASHKEYBYTES);
-
- for (i = 0; i < part->utf_words->len; i++) {
- word = &g_array_index(part->utf_words, rspamd_stat_token_t, i);
- rspamd_cryptobox_hash_update(&st,
- word->stemmed.begin, word->stemmed.len);
- }
-
- rspamd_cryptobox_hash_final(&st, digest);
-
- rspamd_encode_hex_buf(digest, sizeof(digest), hexdigest,
- sizeof(hexdigest));
- lua_pushlstring(L, hexdigest, sizeof(hexdigest) - 1);
-
- cbd.pool = pool;
- cbd.part = part;
- sgl = rspamd_shingles_from_text(part->utf_words, key,
- pool, lua_shingles_filter, &cbd, RSPAMD_SHINGLES_MUMHASH);
-
- if (sgl == NULL) {
- lua_pushnil(L);
- }
- else {
- lua_createtable(L, G_N_ELEMENTS(sgl->hashes), 0);
-
- for (i = 0; i < G_N_ELEMENTS(sgl->hashes); i++) {
- sd = GSIZE_TO_POINTER(sgl->hashes[i]);
-
- lua_createtable(L, 4, 0);
- rspamd_snprintf(numbuf, sizeof(numbuf), "%uL", sd->hash);
- lua_pushstring(L, numbuf);
- lua_rawseti(L, -2, 1);
-
- /* Tokens */
- lua_pushlstring(L, sd->t1.begin, sd->t1.len);
- lua_rawseti(L, -2, 2);
-
- lua_pushlstring(L, sd->t2.begin, sd->t2.len);
- lua_rawseti(L, -2, 3);
-
- lua_pushlstring(L, sd->t3.begin, sd->t3.len);
- lua_rawseti(L, -2, 4);
-
- lua_rawseti(L, -2, i + 1); /* Store table */
- }
- }
- }
-
- return 2;
- }
-
- static int
- lua_textpart_get_mimepart(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
- struct rspamd_mime_part **pmime;
-
- if (part != NULL) {
- if (part->mime_part != NULL) {
- pmime = lua_newuserdata(L, sizeof(struct rspamd_mime_part *));
- rspamd_lua_setclass(L, rspamd_mimepart_classname, -1);
- *pmime = part->mime_part;
-
- return 1;
- }
- }
-
- lua_pushnil(L);
- return 1;
- }
-
- /***
- * @method mime_part:get_stats()
- * Returns a table with the following data:
- * -
- * - `lines`: number of lines
- * - `spaces`: number of spaces
- * - `double_spaces`: double spaces
- * - `empty_lines`: number of empty lines
- * - `non_ascii_characters`: number of non ascii characters
- * - `ascii_characters`: number of ascii characters
- * @return {table} table of stats
- */
- static int
- lua_textpart_get_stats(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_text_part *part = lua_check_textpart(L);
-
- if (part != NULL) {
- lua_createtable(L, 0, 9);
-
- lua_pushstring(L, "lines");
- lua_pushinteger(L, part->nlines);
- lua_settable(L, -3);
- lua_pushstring(L, "empty_lines");
- lua_pushinteger(L, part->empty_lines);
- lua_settable(L, -3);
- lua_pushstring(L, "spaces");
- lua_pushinteger(L, part->spaces);
- lua_settable(L, -3);
- lua_pushstring(L, "non_spaces");
- lua_pushinteger(L, part->non_spaces);
- lua_settable(L, -3);
- lua_pushstring(L, "double_spaces");
- lua_pushinteger(L, part->double_spaces);
- lua_settable(L, -3);
- lua_pushstring(L, "ascii_characters");
- lua_pushinteger(L, part->ascii_chars);
- lua_settable(L, -3);
- lua_pushstring(L, "non_ascii_characters");
- lua_pushinteger(L, part->non_ascii_chars);
- lua_settable(L, -3);
- lua_pushstring(L, "capital_letters");
- lua_pushinteger(L, part->capital_letters);
- lua_settable(L, -3);
- lua_pushstring(L, "numeric_characters");
- lua_pushinteger(L, part->numeric_characters);
- lua_settable(L, -3);
- }
- else {
- return luaL_error(L, "invalid arguments");
- }
-
- return 1;
- }
-
- /* Mimepart implementation */
-
- static int
- lua_mimepart_get_content(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
- struct rspamd_lua_text *t;
-
- if (part == NULL) {
- lua_pushnil(L);
- return 1;
- }
-
- t = lua_newuserdata(L, sizeof(*t));
- rspamd_lua_setclass(L, rspamd_text_classname, -1);
- t->start = part->parsed_data.begin;
- t->len = part->parsed_data.len;
- t->flags = 0;
-
- if (lua_is_text_binary(t)) {
- t->flags |= RSPAMD_TEXT_FLAG_BINARY;
- }
-
- return 1;
- }
-
- static int
- lua_mimepart_get_raw_content(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
- struct rspamd_lua_text *t;
-
- if (part == NULL) {
- lua_pushnil(L);
- return 1;
- }
-
- t = lua_newuserdata(L, sizeof(*t));
- rspamd_lua_setclass(L, rspamd_text_classname, -1);
- t->start = part->raw_data.begin;
- t->len = part->raw_data.len;
- t->flags = 0;
-
- return 1;
- }
-
- static int
- lua_mimepart_get_length(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- lua_pushnil(L);
- return 1;
- }
-
- lua_pushinteger(L, part->parsed_data.len);
-
- return 1;
- }
-
- static int
- lua_mimepart_get_type_common(lua_State *L, struct rspamd_content_type *ct,
- gboolean full)
- {
-
- GHashTableIter it;
- gpointer k, v;
- struct rspamd_content_type_param *param;
-
- if (ct == NULL) {
- lua_pushnil(L);
- lua_pushnil(L);
- return 2;
- }
-
- lua_pushlstring(L, ct->type.begin, ct->type.len);
- lua_pushlstring(L, ct->subtype.begin, ct->subtype.len);
-
- if (!full) {
- return 2;
- }
-
- lua_createtable(L, 0, 2 + (ct->attrs ? g_hash_table_size(ct->attrs) : 0));
-
- if (ct->charset.len > 0) {
- lua_pushstring(L, "charset");
- lua_pushlstring(L, ct->charset.begin, ct->charset.len);
- lua_settable(L, -3);
- }
-
- if (ct->boundary.len > 0) {
- lua_pushstring(L, "boundary");
- lua_pushlstring(L, ct->boundary.begin, ct->boundary.len);
- lua_settable(L, -3);
- }
-
- if (ct->attrs) {
- g_hash_table_iter_init(&it, ct->attrs);
-
- while (g_hash_table_iter_next(&it, &k, &v)) {
- param = v;
-
- if (param->name.len > 0 && param->value.len > 0) {
- /* TODO: think about multiple values here */
- lua_pushlstring(L, param->name.begin, param->name.len);
- lua_pushlstring(L, param->value.begin, param->value.len);
- lua_settable(L, -3);
- }
- }
- }
-
- return 3;
- }
-
- static int
- lua_mimepart_get_type(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- return lua_mimepart_get_type_common(L, part->ct, FALSE);
- }
-
- static int
- lua_mimepart_get_type_full(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- return lua_mimepart_get_type_common(L, part->ct, TRUE);
- }
-
- static int
- lua_mimepart_get_detected_type(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- return lua_mimepart_get_type_common(L, part->detected_ct, FALSE);
- }
-
- static int
- lua_mimepart_get_detected_type_full(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- return lua_mimepart_get_type_common(L, part->detected_ct, TRUE);
- }
-
- static int
- lua_mimepart_get_detected_ext(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (part->detected_ext) {
- lua_pushstring(L, part->detected_ext);
- }
- else {
- lua_pushnil(L);
- }
-
- return 1;
- }
-
- static int
- lua_mimepart_get_cte(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- lua_pushnil(L);
- return 1;
- }
-
- lua_pushstring(L, rspamd_cte_to_string(part->cte));
-
- return 1;
- }
-
- static int
- lua_mimepart_get_filename(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL || part->cd == NULL || part->cd->filename.len == 0) {
- lua_pushnil(L);
- return 1;
- }
-
- lua_pushlstring(L, part->cd->filename.begin, part->cd->filename.len);
-
- return 1;
- }
-
- static int
- lua_mimepart_get_boundary(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L), *parent;
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (IS_PART_MULTIPART(part)) {
- lua_pushlstring(L, part->specific.mp->boundary.begin,
- part->specific.mp->boundary.len);
- }
- else {
- parent = part->parent_part;
-
- if (!parent || !IS_PART_MULTIPART(parent)) {
- lua_pushnil(L);
- }
- else {
- lua_pushlstring(L, parent->specific.mp->boundary.begin,
- parent->specific.mp->boundary.len);
- }
- }
-
- return 1;
- }
-
- static int
- lua_mimepart_get_enclosing_boundary(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L), *parent;
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- parent = part->parent_part;
-
- if (!parent || !IS_PART_MULTIPART(parent)) {
- lua_pushnil(L);
- }
- else {
- lua_pushlstring(L, parent->specific.mp->boundary.begin,
- parent->specific.mp->boundary.len);
- }
-
- return 1;
- }
-
- static int
- lua_mimepart_get_header_common(lua_State *L, enum rspamd_lua_task_header_type how)
- {
- struct rspamd_mime_part *part = lua_check_mimepart(L);
- const char *name;
- gboolean strong = FALSE;
-
- name = luaL_checkstring(L, 2);
-
- if (name && part) {
-
- if (lua_isboolean(L, 3)) {
- strong = lua_toboolean(L, 3);
- }
-
- return rspamd_lua_push_header_array(L,
- name,
- rspamd_message_get_header_from_hash(part->raw_headers, name, FALSE),
- how,
- strong);
- }
-
- lua_pushnil(L);
-
- return 1;
- }
-
- static int
- lua_mimepart_get_header_full(lua_State *L)
- {
- LUA_TRACE_POINT;
- return lua_mimepart_get_header_common(L, RSPAMD_TASK_HEADER_PUSH_FULL);
- }
-
- static int
- lua_mimepart_get_header(lua_State *L)
- {
- LUA_TRACE_POINT;
- return lua_mimepart_get_header_common(L, RSPAMD_TASK_HEADER_PUSH_SIMPLE);
- }
-
- static int
- lua_mimepart_get_header_raw(lua_State *L)
- {
- LUA_TRACE_POINT;
- return lua_mimepart_get_header_common(L, RSPAMD_TASK_HEADER_PUSH_RAW);
- }
-
- static int
- lua_mimepart_get_header_count(lua_State *L)
- {
- LUA_TRACE_POINT;
- return lua_mimepart_get_header_common(L, RSPAMD_TASK_HEADER_PUSH_COUNT);
- }
-
- static int
- lua_mimepart_get_raw_headers(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
- struct rspamd_lua_text *t;
-
- if (part) {
- t = lua_newuserdata(L, sizeof(*t));
- rspamd_lua_setclass(L, rspamd_text_classname, -1);
- t->start = part->raw_headers_str;
- t->len = part->raw_headers_len;
- t->flags = 0;
- }
- else {
- return luaL_error(L, "invalid arguments");
- }
-
-
- return 1;
- }
-
- static int
- lua_mimepart_get_headers(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
- bool need_modified = lua_isnoneornil(L, 2) ? false : lua_toboolean(L, 2);
-
- if (part) {
- struct rspamd_mime_header *cur;
- int i = 1;
-
- lua_createtable(L, rspamd_mime_headers_count(part->raw_headers), 0);
- LL_FOREACH2(part->headers_order, cur, ord_next)
- {
- if (need_modified && cur->modified_chain) {
- struct rspamd_mime_header *cur_modified;
-
- LL_FOREACH(cur->modified_chain, cur_modified)
- {
- rspamd_lua_push_header(L, cur_modified, RSPAMD_TASK_HEADER_PUSH_FULL);
- lua_rawseti(L, -2, i++);
- }
- }
- else {
- rspamd_lua_push_header(L, cur, RSPAMD_TASK_HEADER_PUSH_FULL);
- lua_rawseti(L, -2, i++);
- }
- }
- }
- else {
- return luaL_error(L, "invalid arguments");
- }
-
-
- return 1;
- }
-
-
- static int
- lua_mimepart_is_image(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- lua_pushboolean(L, part->part_type == RSPAMD_MIME_PART_IMAGE);
-
- return 1;
- }
-
- static int
- lua_mimepart_is_archive(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- lua_pushboolean(L, part->part_type == RSPAMD_MIME_PART_ARCHIVE);
-
- return 1;
- }
-
- static int
- lua_mimepart_is_multipart(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- lua_pushboolean(L, IS_PART_MULTIPART(part) ? true : false);
-
- return 1;
- }
-
- static int
- lua_mimepart_is_message(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- lua_pushboolean(L, IS_PART_MESSAGE(part) ? true : false);
-
- return 1;
- }
-
- static int
- lua_mimepart_is_attachment(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (part->cd && part->cd->type == RSPAMD_CT_ATTACHMENT) {
- lua_pushboolean(L, true);
- }
- else {
- /* if has_name and not (image and Content-ID_header_present) */
- if (part->cd && part->cd->filename.len > 0) {
- if (part->part_type != RSPAMD_MIME_PART_IMAGE &&
- rspamd_message_get_header_from_hash(part->raw_headers,
- "Content-Id", FALSE) == NULL) {
- /* Filename is presented but no content id and not image */
- lua_pushboolean(L, true);
- }
- else {
- /* Image or an embedded object */
- lua_pushboolean(L, false);
- }
- }
- else {
- /* No filename */
- lua_pushboolean(L, false);
- }
- }
-
- return 1;
- }
-
- static int
- lua_mimepart_is_text(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- lua_pushboolean(L, part->part_type == RSPAMD_MIME_PART_TEXT);
-
- return 1;
- }
-
- static int
- lua_mimepart_is_broken(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (part->ct) {
- lua_pushboolean(L, (part->ct->flags & RSPAMD_CONTENT_TYPE_BROKEN) ? true : false);
- }
- else {
- lua_pushboolean(L, false);
- }
-
- return 1;
- }
-
- static int
- lua_mimepart_get_image(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
- struct rspamd_image **pimg;
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (part->part_type != RSPAMD_MIME_PART_IMAGE || part->specific.img == NULL) {
- lua_pushnil(L);
- }
- else {
- pimg = lua_newuserdata(L, sizeof(*pimg));
- *pimg = part->specific.img;
- rspamd_lua_setclass(L, rspamd_image_classname, -1);
- }
-
- return 1;
- }
-
- static int
- lua_mimepart_get_archive(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
- struct rspamd_archive **parch;
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (part->part_type != RSPAMD_MIME_PART_ARCHIVE || part->specific.arch == NULL) {
- lua_pushnil(L);
- }
- else {
- parch = lua_newuserdata(L, sizeof(*parch));
- *parch = part->specific.arch;
- rspamd_lua_setclass(L, rspamd_archive_classname, -1);
- }
-
- return 1;
- }
-
- static int
- lua_mimepart_get_children(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
- struct rspamd_mime_part **pcur, *cur;
- unsigned int i;
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (!IS_PART_MULTIPART(part) || part->specific.mp->children == NULL) {
- lua_pushnil(L);
- }
- else {
- lua_createtable(L, part->specific.mp->children->len, 0);
-
- PTR_ARRAY_FOREACH(part->specific.mp->children, i, cur)
- {
- pcur = lua_newuserdata(L, sizeof(*pcur));
- *pcur = cur;
- rspamd_lua_setclass(L, rspamd_mimepart_classname, -1);
- lua_rawseti(L, -2, i + 1);
- }
- }
-
- return 1;
- }
-
- static int
- lua_mimepart_get_parent(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
- struct rspamd_mime_part **pparent;
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (part->parent_part) {
- pparent = lua_newuserdata(L, sizeof(*pparent));
- *pparent = part->parent_part;
- rspamd_lua_setclass(L, rspamd_mimepart_classname, -1);
- }
- else {
- lua_pushnil(L);
- }
-
- return 1;
- }
-
-
- static int
- lua_mimepart_get_text(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
- struct rspamd_mime_text_part **ppart;
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (part->part_type != RSPAMD_MIME_PART_TEXT || part->specific.txt == NULL) {
- lua_pushnil(L);
- }
- else {
- ppart = lua_newuserdata(L, sizeof(*ppart));
- *ppart = part->specific.txt;
- rspamd_lua_setclass(L, rspamd_textpart_classname, -1);
- }
-
- return 1;
- }
-
- static int
- lua_mimepart_get_digest(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
- char digestbuf[rspamd_cryptobox_HASHBYTES * 2 + 1];
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- memset(digestbuf, 0, sizeof(digestbuf));
- rspamd_encode_hex_buf(part->digest, sizeof(part->digest),
- digestbuf, sizeof(digestbuf));
- lua_pushstring(L, digestbuf);
-
- return 1;
- }
-
- static int
- lua_mimepart_get_id(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- lua_pushinteger(L, part->part_number);
-
- return 1;
- }
-
- static int
- lua_mimepart_headers_foreach(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
- enum rspamd_lua_task_header_type how = RSPAMD_TASK_HEADER_PUSH_SIMPLE;
- struct rspamd_lua_regexp *re = NULL;
- struct rspamd_mime_header *hdr, *cur;
- int old_top;
-
- if (part && lua_isfunction(L, 2)) {
- if (lua_istable(L, 3)) {
- lua_pushstring(L, "full");
- lua_gettable(L, 3);
-
- if (lua_isboolean(L, -1) && lua_toboolean(L, -1)) {
- how = RSPAMD_TASK_HEADER_PUSH_FULL;
- }
-
- lua_pop(L, 1);
-
- lua_pushstring(L, "raw");
- lua_gettable(L, 3);
-
- if (lua_isboolean(L, -1) && lua_toboolean(L, -1)) {
- how = RSPAMD_TASK_HEADER_PUSH_RAW;
- }
-
- lua_pop(L, 1);
-
- lua_pushstring(L, "regexp");
- lua_gettable(L, 3);
-
- if (lua_isuserdata(L, -1)) {
- RSPAMD_LUA_CHECK_UDATA_PTR_OR_RETURN(L, -1, rspamd_regexp_classname,
- struct rspamd_lua_regexp, re);
- }
-
- lua_pop(L, 1);
- }
-
- if (part->headers_order) {
- hdr = part->headers_order;
-
- LL_FOREACH2(hdr, cur, ord_next)
- {
- if (re && re->re) {
- if (!rspamd_regexp_match(re->re, cur->name,
- strlen(cur->name), FALSE)) {
- continue;
- }
- }
-
- old_top = lua_gettop(L);
- lua_pushvalue(L, 2);
- lua_pushstring(L, cur->name);
- rspamd_lua_push_header(L, cur, how);
-
- if (lua_pcall(L, 2, LUA_MULTRET, 0) != 0) {
- msg_err("call to header_foreach failed: %s",
- lua_tostring(L, -1));
- lua_settop(L, old_top);
- break;
- }
- else {
- if (lua_gettop(L) > old_top) {
- if (lua_isboolean(L, old_top + 1)) {
- if (lua_toboolean(L, old_top + 1)) {
- lua_settop(L, old_top);
- break;
- }
- }
- }
- }
-
- lua_settop(L, old_top);
- }
- }
- }
-
- return 0;
- }
-
- static int
- lua_mimepart_get_specific(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (part->part_type != RSPAMD_MIME_PART_CUSTOM_LUA) {
- lua_pushnil(L);
- }
- else {
- lua_rawgeti(L, LUA_REGISTRYINDEX, part->specific.lua_specific.cbref);
- }
-
- return 1;
- }
-
- static int
- lua_mimepart_get_urls(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- struct lua_tree_cb_data cb;
- struct rspamd_url *u;
- static const int default_protocols_mask = PROTOCOL_HTTP | PROTOCOL_HTTPS |
- PROTOCOL_FILE | PROTOCOL_FTP;
- gsize sz, max_urls = 0, i;
-
- if (part->urls == NULL) {
- lua_newtable(L);
-
- return 1;
- }
-
- if (!lua_url_cbdata_fill(L, 2, &cb, default_protocols_mask,
- ~(0), max_urls)) {
- return luaL_error(L, "invalid arguments");
- }
-
- sz = part->urls->len;
-
- lua_createtable(L, sz, 0);
-
- PTR_ARRAY_FOREACH(part->urls, i, u)
- {
- lua_tree_url_callback(u, u, &cb);
- }
-
- lua_url_cbdata_dtor(&cb);
-
- return 1;
- }
-
- static int
- lua_mimepart_is_specific(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL) {
- return luaL_error(L, "invalid arguments");
- }
-
- lua_pushboolean(L, part->part_type == RSPAMD_MIME_PART_CUSTOM_LUA);
-
- return 1;
- }
-
- static int
- lua_mimepart_set_specific(lua_State *L)
- {
- LUA_TRACE_POINT;
- struct rspamd_mime_part *part = lua_check_mimepart(L);
-
- if (part == NULL || lua_isnil(L, 2)) {
- return luaL_error(L, "invalid arguments");
- }
-
- if (part->part_type != RSPAMD_MIME_PART_UNDEFINED &&
- part->part_type != RSPAMD_MIME_PART_CUSTOM_LUA) {
- return luaL_error(L,
- "internal error: trying to set specific lua content on part of type %d",
- part->part_type);
- }
-
- if (part->part_type == RSPAMD_MIME_PART_CUSTOM_LUA) {
- /* Push old specific data */
- lua_rawgeti(L, LUA_REGISTRYINDEX, part->specific.lua_specific.cbref);
- luaL_unref(L, LUA_REGISTRYINDEX, part->specific.lua_specific.cbref);
- }
- else {
- part->part_type = RSPAMD_MIME_PART_CUSTOM_LUA;
- lua_pushnil(L);
- }
-
- /* Now, we push argument on the position 2 and save its reference */
- lua_pushvalue(L, 2);
- part->specific.lua_specific.cbref = luaL_ref(L, LUA_REGISTRYINDEX);
- /* Now stack has just a return value as luaL_ref removes value from stack */
-
- int ltype = lua_type(L, 2);
-
- switch (ltype) {
- case LUA_TTABLE:
- part->specific.lua_specific.type = RSPAMD_LUA_PART_TABLE;
- break;
- case LUA_TSTRING:
- part->specific.lua_specific.type = RSPAMD_LUA_PART_STRING;
- break;
- case LUA_TUSERDATA:
- if (rspamd_lua_check_udata_maybe(L, 2, rspamd_text_classname)) {
- part->specific.lua_specific.type = RSPAMD_LUA_PART_TEXT;
- }
- else {
- part->specific.lua_specific.type = RSPAMD_LUA_PART_UNKNOWN;
- }
- break;
- case LUA_TFUNCTION:
- part->specific.lua_specific.type = RSPAMD_LUA_PART_FUNCTION;
- break;
- default:
- part->specific.lua_specific.type = RSPAMD_LUA_PART_UNKNOWN;
- break;
- }
-
- return 1;
- }
-
- void luaopen_textpart(lua_State *L)
- {
- rspamd_lua_new_class(L, rspamd_textpart_classname, textpartlib_m);
- lua_pop(L, 1);
- }
-
- void luaopen_mimepart(lua_State *L)
- {
- rspamd_lua_new_class(L, rspamd_mimepart_classname, mimepartlib_m);
- lua_pop(L, 1);
- }
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