pidgin/pidgin

Fix the infinite resizing freeze
release-2.x.y
2022-04-15, Belgin Știrbu
0079467afee4
Fix the infinite resizing freeze

This appears related to libpango somehow, as in Debian
Bullseye, libpango splits URLs with dashes at the end,
but in Debian Bookworm, the URLs are not split with dashes
at the end, and the bug does not appear to be triggered
in Bookworm.

This patch makes the assumption that the gtkimhtml widgets
stored in a PidginConversation normally resize in an
alternating manner. However, when the bug is triggered,
only the "entry" gtkimhtml member of PidginConversation
resizes, so we allow "entry" to resize only up to 3 times
in a row.

Testing Done:
Compiled and tested on several desktop environments on a few
GNU/Linux distros by pasting the link mentioned
here https://issues.imfreedom.org/issue/PIDGIN-17413 moving
the cursor at the beginning of the buffer, and holding
the spacebar pressed.

Bugs closed: PIDGIN-16753, PIDGIN-16999, PIDGIN-17287, PIDGIN-17413, PIDGIN-17430, PIDGIN-17568, PIDGIN-17602

Reviewed at https://reviews.imfreedom.org/r/1342/
/*
* Purple
*
* Purple is the legal property of its developers, whose names are too
* numerous to list here. Please refer to the COPYRIGHT file distributed
* with this source distribution
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU 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
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301,
* USA.
*/
#ifndef _PURPLE_MIME_H
#define _PURPLE_MIME_H
#include <glib.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @file mime.h
* @ingroup core
*
* Rudimentary parsing of multi-part MIME messages into more
* accessible structures.
*/
/**
* A MIME document.
*/
typedef struct _PurpleMimeDocument PurpleMimeDocument;
/**
* A part of a multipart MIME document.
*/
typedef struct _PurpleMimePart PurpleMimePart;
/**
* Allocate an empty MIME document.
*/
PurpleMimeDocument *purple_mime_document_new(void);
/**
* Frees memory used in a MIME document and all of its parts and fields
*
* @param doc The MIME document to free.
*/
void purple_mime_document_free(PurpleMimeDocument *doc);
/**
* Parse a MIME document from a NUL-terminated string.
*
* @param buf The NULL-terminated string containing the MIME-encoded data.
*
* @returns A MIME document.
*/
PurpleMimeDocument *purple_mime_document_parse(const char *buf);
/**
* Parse a MIME document from a string
*
* @param buf The string containing the MIME-encoded data.
* @param len Length of buf.
*
* @returns A MIME document.
*/
PurpleMimeDocument *purple_mime_document_parsen(const char *buf, gsize len);
/**
* Write (append) a MIME document onto a GString.
*/
void purple_mime_document_write(PurpleMimeDocument *doc, GString *str);
/**
* The list of fields in the header of a document
*
* @param doc The MIME document.
*
* @constreturn A list of strings indicating the fields (but not the values
* of the fields) in the header of doc.
*/
GList *purple_mime_document_get_fields(PurpleMimeDocument *doc);
/**
* Get the value of a specific field in the header of a document.
*
* @param doc The MIME document.
* @param field Case-insensitive field name.
*
* @returns Value associated with the indicated header field, or
* NULL if the field doesn't exist.
*/
const char *purple_mime_document_get_field(PurpleMimeDocument *doc,
const char *field);
/**
* Set or replace the value of a specific field in the header of a
* document.
*
* @param doc The MIME document.
* @param field Case-insensitive field name.
* @param value Value to associate with the indicated header field,
* of NULL to remove the field.
*/
void purple_mime_document_set_field(PurpleMimeDocument *doc,
const char *field,
const char *value);
/**
* The list of parts in a multipart document.
*
* @param doc The MIME document.
*
* @constreturn List of PurpleMimePart contained within doc.
*/
GList *purple_mime_document_get_parts(PurpleMimeDocument *doc);
/**
* Create and insert a new part into a MIME document.
*
* @param doc The new part's parent MIME document.
*/
PurpleMimePart *purple_mime_part_new(PurpleMimeDocument *doc);
/**
* The list of fields in the header of a document part.
*
* @param part The MIME document part.
*
* @constreturn List of strings indicating the fields (but not the values
* of the fields) in the header of part.
*/
GList *purple_mime_part_get_fields(PurpleMimePart *part);
/**
* Get the value of a specific field in the header of a document part.
*
* @param part The MIME document part.
* @param field Case-insensitive name of the header field.
*
* @returns Value of the specified header field, or NULL if the
* field doesn't exist.
*/
const char *purple_mime_part_get_field(PurpleMimePart *part,
const char *field);
/**
* Get the decoded value of a specific field in the header of a
* document part.
*/
char *purple_mime_part_get_field_decoded(PurpleMimePart *part,
const char *field);
/**
* Set or replace the value of a specific field in the header of a
* document.
*
* @param part The part of the MIME document.
* @param field Case-insensitive field name
* @param value Value to associate with the indicated header field,
* of NULL to remove the field.
*/
void purple_mime_part_set_field(PurpleMimePart *part,
const char *field,
const char *value);
/**
* Get the (possibly encoded) data portion of a MIME document part.
*
* @param part The MIME document part.
*
* @returns NULL-terminated data found in the document part
*/
const char *purple_mime_part_get_data(PurpleMimePart *part);
/**
* Get the data portion of a MIME document part, after attempting to
* decode it according to the content-transfer-encoding field. If the
* specified encoding method is not supported, this function will
* return NULL.
*
* @param part The MIME documemt part.
* @param data Buffer for the data.
* @param len The length of the buffer.
*/
void purple_mime_part_get_data_decoded(PurpleMimePart *part,
guchar **data, gsize *len);
/**
* Get the length of the data portion of a MIME document part.
*
* @param part The MIME document part.
* @returns Length of the data in the document part.
*/
gsize purple_mime_part_get_length(PurpleMimePart *part);
void purple_mime_part_set_data(PurpleMimePart *part, const char *data);
#ifdef __cplusplus
}
#endif
#endif