* @file util.h Utility Functions * 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 * 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 * @todo Rename the functions so that they live somewhere in the purple * A generic structure that contains information about an "action." One * place this is is used is by PRPLs to tell the core the list of available * right-click actions for a buddy list row. typedef struct _PurpleMenuAction PurpleMenuAction; * This is used by, among other things, purple_gtk_combo* functions to pass in a * list of key-value pairs so it can display a user-friendly value. typedef struct _PurpleKeyValuePair PurpleKeyValuePair; typedef char *(*PurpleInfoFieldFormatCallback)(const char *field, size_t len); struct _PurpleKeyValuePair * Creates a new PurpleMenuAction. * @param label The text label to display for this action. * @param callback The function to be called when the action is used on * @param data Additional data to be passed to the callback. * @param children A GList of PurpleMenuActions to be added as a submenu * @return The PurpleMenuAction. PurpleMenuAction *purple_menu_action_new(const char *label, PurpleCallback callback, gpointer data, GList *children); * Frees a PurpleMenuAction * @param act The PurpleMenuAction to free. void purple_menu_action_free(PurpleMenuAction *act); * Returns the label of the PurpleMenuAction. * @param act The PurpleMenuAction. * @return The label string. char * purple_menu_action_get_label(const PurpleMenuAction *act); * Returns the callback of the PurpleMenuAction. * @param act The PurpleMenuAction. * @return The callback function. PurpleCallback purple_menu_action_get_callback(const PurpleMenuAction *act); * Returns the data stored in the PurpleMenuAction. * @param act The PurpleMenuAction. gpointer purple_menu_action_get_data(const PurpleMenuAction *act); * Returns the children of the PurpleMenuAction. * @param act The PurpleMenuAction. * @return The GList of children. GList* purple_menu_action_get_children(const PurpleMenuAction *act); * Set the label to the PurpleMenuAction. * @param act The menu action. * @param label The label for the menu action. void purple_menu_action_set_label(PurpleMenuAction *act, char *label); * Set the callback that will be used by the PurpleMenuAction. * @param act The menu action. * @param callback The callback. void purple_menu_action_set_callback(PurpleMenuAction *act, PurpleCallback callback); * Set the label to the PurpleMenuAction. * @param act The menu action. * @param data The data used by this PurpleMenuAction void purple_menu_action_set_data(PurpleMenuAction *act, gpointer data); * Set the children of the PurpleMenuAction. * @param act The menu action. * @param children The PurpleMenuAtion children void purple_menu_action_set_children(PurpleMenuAction *act, GList *children); * Sets the icon for the PurpleMenuAction. * @param act The menu action. * @param strock The stock icon identifier. void purple_menu_action_set_stock_icon(PurpleMenuAction *act, * Gets the stock icon of the PurpleMenuAction. * @param act The menu action. * @return The stock icon identifier. purple_menu_action_get_stock_icon(PurpleMenuAction *act); * Set the appropriate presence values for the currently playing song. * @param title The title of the song, @c NULL to unset the value. * @param artist The artist of the song, can be @c NULL. * @param album The album of the song, can be @c NULL. void purple_util_set_current_song(const char *title, const char *artist, * Format song information. * @param title The title of the song, @c NULL to unset the value. * @param artist The artist of the song, can be @c NULL. * @param album The album of the song, can be @c NULL. * @param unused Currently unused, must be @c NULL. * @return The formatted string. The caller must g_free the returned string. char * purple_util_format_song_info(const char *title, const char *artist, const char *album, gpointer unused); /**************************************************************************/ /** @name Utility Subsystem */ /**************************************************************************/ * Initializes the utility subsystem. void purple_util_init(void); * Uninitializes the util subsystem. void purple_util_uninit(void); /**************************************************************************/ /** @name Base16 Functions */ /**************************************************************************/ * Converts a chunk of binary data to its base-16 equivalent. * @param data The data to convert. * @param len The length of the data. * @return The base-16 string in the ASCII encoding. Must be * g_free'd when no longer needed. * @see purple_base16_decode() gchar *purple_base16_encode(const guchar *data, gsize len); * Converts an ASCII string of base-16 encoded data to * @param str The base-16 string to convert to raw data. * @param ret_len The length of the returned data. You can * pass in NULL if you're sure that you know * the length of the decoded data, or if you * know you'll be able to use strlen to * determine the length, etc. * @return The raw data. Must be g_free'd when no longer needed. * @see purple_base16_encode() guchar *purple_base16_decode(const char *str, gsize *ret_len); * Converts a chunk of binary data to a chunked base-16 representation * (handy for key fingerprints) * Example output: 01:23:45:67:89:AB:CD:EF * @param data The data to convert. * @param len The length of the data. * @return The base-16 string in the ASCII chunked encoding. Must be * g_free'd when no longer needed. gchar *purple_base16_encode_chunked(const guchar *data, gsize len); /**************************************************************************/ /** @name Base64 Functions */ /**************************************************************************/ * Converts a chunk of binary data to its base-64 equivalent. * @param data The data to convert. * @param len The length of the data. * @return The base-64 string in the ASCII encoding. Must be * g_free'd when no longer needed. * @see purple_base64_decode() gchar *purple_base64_encode(const guchar *data, gsize len); * Converts an ASCII string of base-64 encoded data to * @param str The base-64 string to convert to raw data. * @param ret_len The length of the returned data. You can * pass in NULL if you're sure that you know * the length of the decoded data, or if you * know you'll be able to use strlen to * determine the length, etc. * @return The raw data. Must be g_free'd when no longer needed. * @see purple_base64_encode() guchar *purple_base64_decode(const char *str, gsize *ret_len); /**************************************************************************/ /** @name Quoted Printable Functions */ /**************************************************************************/ * Converts a quoted printable string back to its readable equivalent. * What is a quoted printable string, you ask? It's an encoding used * to transmit binary data as ASCII. It's intended purpose is to send * emails containing non-ASCII characters. Wikipedia has a pretty good * explanation. Also see RFC 2045. * @param str The quoted printable ASCII string to convert to raw data. * @param ret_len The length of the returned data. * @return The readable string. Must be g_free'd when no longer needed. guchar *purple_quotedp_decode(const char *str, gsize *ret_len); /**************************************************************************/ /** @name MIME Functions */ /**************************************************************************/ * Converts a MIME header field string back to its readable equivalent * according to RFC 2047. Basically, a header is plain ASCII and can * contain any number of sections called "encoded-words." The format * of an encoded word is =?ISO-8859-1?Q?Keld_J=F8rn_Simonsen?= * =? designates the beginning of the encoded-word * ?= designates the end of the encoded-word * An encoded word is segmented into three pieces by the use of a * question mark. The first piece is the character set, the second * piece is the encoding, and the third piece is the encoded text. * @param str The ASCII string, possibly containing any number of * @return The string, with any encoded-word sections decoded and * converted to UTF-8. Must be g_free'd when no longer char *purple_mime_decode_field(const char *str); /**************************************************************************/ /** @name Date/Time Functions */ /**************************************************************************/ * Formats a time into the specified format. * This is essentially strftime(), but it has a static buffer * and handles the UTF-8 conversion for the caller. * This function also provides the GNU %z formatter if the underlying C * library doesn't. However, the format string parser is very naive, which * means that conversions specifiers to %z cannot be guaranteed. The GNU * strftime(3) man page describes %z as: 'The time-zone as hour offset from * GMT. Required to emit RFC822-conformant dates * (using "%a, %d %b %Y %H:%M:%S %z"). (GNU)' * On Windows, this function also converts the results for %Z from a timezone * name (as returned by the system strftime() %Z format string) to a timezone * abbreviation (as is the case on Unix). As with %z, conversion specifiers * @param format The format string, in UTF-8 * @param tm The time to format, or @c NULL to use the current local time * @return The formatted time, in UTF-8. * @note @a format is required to be in UTF-8. This differs from strftime(), * where the format is provided in the locale charset. const char *purple_utf8_strftime(const char *format, const struct tm *tm); * Gets a string representation of the local timezone offset * @param tm The time to get the timezone for * @param iso TRUE to format the offset according to ISO-8601, FALSE to * not substitute 'Z' for 0 offset, and to not separate * hours and minutes with a colon. const char *purple_get_tzoff_str(const struct tm *tm, gboolean iso); * Formats a time into the user's preferred short date format. * The returned string is stored in a static buffer, so the result * should be g_strdup()'d if it's going to be kept. * @param tm The time to format, or @c NULL to use the current local time * @return The date, formatted as per the user's settings. In the USA this * is something like "02/18/13" const char *purple_date_format_short(const struct tm *tm); * Formats a time into the user's preferred short date plus time format. * The returned string is stored in a static buffer, so the result * should be g_strdup()'d if it's going to be kept. * @param tm The time to format, or @c NULL to use the current local time * @return The timestamp, formatted as per the user's settings. In the USA * this is something like "02/18/13 15:26:44" const char *purple_date_format_long(const struct tm *tm); * Formats a time into the user's preferred full date and time format. * The returned string is stored in a static buffer, so the result * should be g_strdup()'d if it's going to be kept. * @param tm The time to format, or @c NULL to use the current local time * @return The date and time, formatted as per the user's settings. In the * USA this is something like "Mon Feb 18 15:26:44 2013" const char *purple_date_format_full(const struct tm *tm); * Formats a time into the user's preferred time format. * The returned string is stored in a static buffer, so the result * should be g_strdup()'d if it's going to be kept. * @param tm The time to format, or @c NULL to use the current local time * @return The time, formatted as per the user's settings. In the USA this * is something like "15:26:44" const char *purple_time_format(const struct tm *tm); * Builds a time_t from the supplied information. * @param month The month. time_t purple_time_build(int year, int month, int day, int hour, /** Used by purple_str_to_time to indicate no timezone offset was * specified in the timestamp string. */ #define PURPLE_NO_TZ_OFF -500000 * Parses a timestamp in jabber, ISO8601, or MM/DD/YYYY format and returns * @param timestamp The timestamp * @param utc Assume UTC if no timezone specified * @param tm If not @c NULL, the caller can get a copy of the * struct tm used to calculate the time_t return value. * @param tz_off If not @c NULL, the caller can get a copy of the * timezone offset (from UTC) used to calculate the time_t * return value. Note: Zero is a valid offset. As such, * the value of the macro @c PURPLE_NO_TZ_OFF indicates no * offset was specified (which means that the local * timezone was used in the calculation). * @param rest If not @c NULL, the caller can get a pointer to the * part of @a timestamp left over after parsing is * completed, if it's not the end of @a timestamp. time_t purple_str_to_time(const char *timestamp, gboolean utc, struct tm *tm, long *tz_off, const char **rest); * Formats a datetime according to a UTS-35 Date Format Pattern. * @param format The formatting string, according to UTS #35 * See http://unicode.org/reports/tr35/ * (NOTE: not all formats are supported) * @param len The length of the formatting string * @param tm The time to format, or @c NULL to use the current local time * @return The time, formatted as per the user's settings. char *purple_uts35_to_str(const char *format, size_t len, struct tm *tm); /**************************************************************************/ /** @name Markup Functions */ /**************************************************************************/ * Escapes special characters in a plain-text string so they display * correctly as HTML. For example, & is replaced with & and < is * This is exactly the same as g_markup_escape_text(), except that it * does not change ' to ' because ' is not a valid HTML 4 entity, * and is displayed literally in IE7. gchar *purple_markup_escape_text(const gchar *text, gssize length); * Finds an HTML tag matching the given name. * This locates an HTML tag's start and end, and stores its attributes * in a GData hash table. The names of the attributes are lower-cased * in the hash table, and the name of the tag is case insensitive. * @param needle The name of the tag * @param haystack The null-delimited string to search in * @param start A pointer to the start of the tag if found * @param end A pointer to the end of the tag if found * @param attributes The attributes, if the tag was found. This should * be freed with g_datalist_clear(). * @return TRUE if the tag was found gboolean purple_markup_find_tag(const char *needle, const char *haystack, const char **start, const char **end, * Extracts a field of data from HTML. * This is a scary function. See protocols/msn/msn.c and * protocols/yahoo/yahoo_profile.c for example usage. * @param str The string to parse. * @param len The size of str. * @param user_info The destination PurpleNotifyUserInfo to which the new * field info should be added. * @param start_token The beginning token. * @param skip The number of characters to skip after the * @param end_token The ending token. * @param check_value The value that the last character must meet. * @param no_value_token The token indicating no value is given. * @param display_name The short descriptive name to display for this token. * @param is_link TRUE if this should be a link, or FALSE otherwise. * @param link_prefix The prefix for the link. * @param format_cb A callback to format the value before adding it. * @return TRUE if successful, or FALSE otherwise. gboolean purple_markup_extract_info_field(const char *str, int len, PurpleNotifyUserInfo *user_info, const char *start_token, int skip, const char *end_token, char check_value, const char *no_value_token, const char *display_name, gboolean is_link, PurpleInfoFieldFormatCallback format_cb); * Converts HTML markup to XHTML. * @param html The HTML markup. * @param dest_xhtml The destination XHTML output. * @param dest_plain The destination plain-text output. void purple_markup_html_to_xhtml(const char *html, char **dest_xhtml, * Strips HTML tags from a string. * @param str The string to strip HTML from. * @return The new string without HTML. You must g_free this string char *purple_markup_strip_html(const char *str); * Adds the necessary HTML code to turn URIs into HTML links in a string. * @param str The string to linkify. * @return The new string with all URIs surrounded in standard * HTML <a href="whatever"></a> tags. You must g_free this * string when finished with it. char *purple_markup_linkify(const char *str); * Unescapes HTML entities to their literal characters in the text. * For example "&" is replaced by '&' and so on. Also converts * numerical entities (e.g. "&" is also '&'). * This function currently supports the following named entities: * "&", "<", ">", "©", """, "®", "'" * purple_unescape_html() is similar, but also converts "<br>" into "\n". * @param text The string in which to unescape any HTML entities * @return The text with HTML entities literalized. You must g_free * this string when finished with it. * @see purple_unescape_html() char *purple_unescape_text(const char *text); * Unescapes HTML entities to their literal characters and converts * "<br>" to "\n". See purple_unescape_text() for more details. * @param html The string in which to unescape any HTML entities * @return The text with HTML entities literalized. You must g_free * this string when finished with it. * @see purple_unescape_text() char *purple_unescape_html(const char *html); * Returns a newly allocated substring of the HTML UTF-8 string "str". * The markup is preserved such that the substring will have the same * formatting as original string, even though some tags may have been * opened before "x", or may close after "y". All open tags are closed * at the end of the returned string, in the proper order. * Note that x and y are in character offsets, not byte offsets, and * are offsets into an unformatted version of str. Because of this, * this function may be sensitive to changes in GtkIMHtml and may break * when used with other UI's. libpurple users are encouraged to report and * work out any problems encountered. * @param str The input NUL terminated, HTML, UTF-8 (or ASCII) string. * @param x The character offset into an unformatted version of str to * @param y The character offset (into an unformatted vesion of str) of * one past the last character to include in the slice. * @return The HTML slice of string, with all formatting retained. char *purple_markup_slice(const char *str, guint x, guint y); * Returns a newly allocated string containing the name of the tag * located at "tag". Tag is expected to point to a '<', and contain * a '>' sometime after that. If there is no '>' and the string is * not NUL terminated, this function can be expected to segfault. * @param tag The string starting a HTML tag. * @return A string containing the name of the tag. char *purple_markup_get_tag_name(const char *tag); * Returns a constant string of the character representation of the HTML * entity pointed to by @a text. For example, purple_markup_unescape_entity("&") * will return "&". The @a text variable is expected to point to an '&', * the first character of the entity. If given an unrecognized entity, the function * Note that this function, unlike purple_unescape_html(), does not search * the string for the entity, does not replace the entity, and does not * return a newly allocated string. * @param text A string containing an HTML entity. * @param length If not @c NULL, the string length of the entity is stored in this location. * @return A constant string containing the character representation of the given entity. const char * purple_markup_unescape_entity(const char *text, int *length); * Returns a newly allocated string containing the value of the CSS property specified * in opt. The @a style argument is expected to point to a HTML inline CSS. * The function will seek for the CSS property and return its value. * For example, purple_markup_get_css_property("direction:rtl;color:#dc4d1b;", * "color") would return "#dc4d1b". * On error or if the requested property was not found, the function returns * @param style A string containing the inline CSS text. * @param opt The requested CSS property. * @return The value of the requested CSS property. char * purple_markup_get_css_property(const gchar *style, const gchar *opt); * Check if the given HTML contains RTL text. * @param html The HTML text. * @return TRUE if the text contains RTL text, FALSE otherwise. gboolean purple_markup_is_rtl(const char *html); /**************************************************************************/ /** @name Path/Filename Functions */ /**************************************************************************/ * Returns the user's home directory. * @return The user's home directory. const gchar *purple_home_dir(void); * Returns the purple settings directory in the user's home directory. * This is usually ~/.purple * @return The purple settings directory. const char *purple_user_dir(void); * Define a custom purple settings directory, overriding the default (user's home directory/.purple) * @param dir The custom settings directory void purple_util_set_user_dir(const char *dir); * Builds a complete path from the root, making any directories along * the path which do not already exist. * @param path The path you wish to create. Note that it must start * from the root or this function will fail. * @param mode Unix-style permissions for this directory. * @return 0 for success, nonzero on any error. int purple_build_dir(const char *path, int mode); * Write a string of data to a file of the given name in the Purple * user directory ($HOME/.purple by default). The data is typically * a serialized version of one of Purple's config files, such as * prefs.xml, accounts.xml, etc. And the string is typically * obtained using purple_xmlnode_to_formatted_str. However, this function * should work fine for saving binary files as well. * @param filename The basename of the file to write in the purple_user_dir. * @param data A null-terminated string of data to write. * @param size The size of the data to save. If data is * null-terminated you can pass in -1. * @return TRUE if the file was written successfully. FALSE otherwise. gboolean purple_util_write_data_to_file(const char *filename, const char *data, * Write data to a file using the absolute path. * This exists for Glib backwards compatibility reasons. * @param filename_full Filename to write to * @param data A null-terminated string of data to write. * @param size The size of the data to save. If data is * null-terminated you can pass in -1. * @return TRUE if the file was written successfully. FALSE otherwise. * @todo Remove this function (use g_file_set_contents instead) when 3.0.0 * @see purple_util_write_data_to_file() purple_util_write_data_to_file_absolute(const char *filename_full, const char *data, gssize size); * Read the contents of a given file and parse the results into an * PurpleXmlNode tree structure. This is intended to be used to read * Purple's configuration xml files (prefs.xml, pounces.xml, etc.) * @param filename The basename of the file to open in the purple_user_dir. * @param description A very short description of the contents of this * file. This is used in error messages shown to the * user when the file can not be opened. For example, * "preferences," or "buddy pounces." * @return An PurpleXmlNode tree of the contents of the given file. Or NULL, if * the file does not exist or there was an error reading the file. PurpleXmlNode *purple_util_read_xml_from_file(const char *filename, const char *description); * Creates a temporary file and returns a file pointer to it. * This is like mkstemp(), but returns a file pointer and uses a * pre-set template. It uses the semantics of tempnam() for the * directory to use and allocates the space for the file path. * The caller is responsible for closing the file and removing it when * done, as well as freeing the space pointed to by @a path with * @param path The returned path to the temp file. * @param binary Text or binary, for platforms where it matters. * @return A file pointer to the temporary file, or @c NULL on failure. FILE *purple_mkstemp(char **path, gboolean binary); * Returns an extension corresponding to the image data's file type. * @param data A pointer to the image data * @param len The length of the image data * @return The appropriate extension, or "icon" if unknown. purple_util_get_image_extension(gconstpointer data, size_t len); * @return A hex encoded version of the SHA-1 hash of the data passed * in with the correct file extention appended. The file * extension is determined by calling * purple_util_get_image_extension(). This return value must * be g_freed by the caller. char *purple_util_get_image_filename(gconstpointer image_data, size_t image_len); /**************************************************************************/ /** @name Environment Detection Functions */ /**************************************************************************/ * Checks if the given program name is valid and executable. * @param program The file name of the application. * @return TRUE if the program is runable. gboolean purple_program_is_valid(const char *program); * Check if running GNOME. * @return TRUE if running GNOME, FALSE otherwise. gboolean purple_running_gnome(void); * @return TRUE if running KDE, FALSE otherwise. gboolean purple_running_kde(void); * @return TRUE if running OS X, FALSE otherwise. gboolean purple_running_osx(void); * Returns the IP address from a socket file descriptor. * @param fd The socket file descriptor. * @return The IP address, or @c NULL on error. char *purple_fd_get_ip(int fd); * Returns the address family of a socket. * @param fd The socket file descriptor. * @return The address family of the socket (AF_INET, AF_INET6, etc) or -1 int purple_socket_get_family(int fd); * Returns TRUE if a socket is capable of speaking IPv4. * This is the case for IPv4 sockets and, on some systems, IPv6 sockets * (due to the IPv4-mapped address functionality). * @param fd The socket file descriptor * @return TRUE if a socket can speak IPv4. gboolean purple_socket_speaks_ipv4(int fd); /**************************************************************************/ /** @name String Functions */ /**************************************************************************/ * Tests two strings for equality. * Unlike strcmp(), this function will not crash if one or both of the * @param right A string to compare with left * @return @c TRUE if the strings are the same, else @c FALSE. gboolean purple_strequal(const gchar *left, const gchar *right); * Normalizes a string, so that it is suitable for comparison. * The returned string will point to a static buffer, so if the * string is intended to be kept long-term, you <i>must</i> * g_strdup() it. Also, calling normalize() twice in the same line * @param account The account the string belongs to, or NULL if you do * not know the account. If you use NULL, the string * will still be normalized, but if the PRPL uses a * custom normalization function then the string may * not be normalized correctly. * @param str The string to normalize. * @return A pointer to the normalized version stored in a static buffer. const char *purple_normalize(const PurpleAccount *account, const char *str); * Normalizes a string, so that it is suitable for comparison. * This is one possible implementation for the PRPL callback * function "normalize." It returns a lowercase and UTF-8 * normalized version of the string. * @param account The account the string belongs to. * @param str The string to normalize. * @return A pointer to the normalized version stored in a static buffer. const char *purple_normalize_nocase(const PurpleAccount *account, const char *str); * Checks, if a string is valid. * @param prpl The protocol plugin the string belongs to. * @param str The string to validate. * @return TRUE, if string is valid, otherwise FALSE. gboolean purple_validate(const PurplePlugin *prpl, const char *str); * Compares two strings to see if the first contains the second as * @param s The string to check. * @param p The prefix in question. * @return TRUE if p is a prefix of s, otherwise FALSE. gboolean purple_str_has_prefix(const char *s, const char *p); * Compares two strings to see if the second is a proper suffix * @param s The string to check. * @param x The suffix in question. * @return TRUE if x is a a suffix of s, otherwise FALSE. gboolean purple_str_has_suffix(const char *s, const char *x); * Duplicates a string and replaces all newline characters from the * source string with HTML linebreaks. * @param src The source string. * @return The new string. Must be g_free'd by the caller. gchar *purple_strdup_withhtml(const gchar *src); * Ensures that all linefeeds have a matching carriage return. * @param str The source string. * @return The string with carriage returns. char *purple_str_add_cr(const char *str); * Strips all instances of the given character from the * given string. The string is modified in place. This * is useful for stripping new line characters, for example. * purple_str_strip_char(my_dumb_string, '\n'); * @param str The string to strip characters from. * @param thechar The character to strip from the given string. void purple_str_strip_char(char *str, char thechar); * Given a string, this replaces all instances of one character * with another. This happens inline (the original string IS * @param string The string from which to replace stuff. * @param delimiter The character you want replaced. * @param replacement The character you want inserted in place * of the delimiting character. void purple_util_chrreplace(char *string, char delimiter, * Given a string, this replaces one substring with another * and returns a newly allocated string. * @param string The string from which to replace stuff. * @param delimiter The substring you want replaced. * @param replacement The substring you want inserted in place * of the delimiting substring. * @return A new string, after performing the substitution. * free this with g_free(). gchar *purple_strreplace(const char *string, const char *delimiter, const char *replacement); * Given a string, this replaces any utf-8 substrings in that string with * the corresponding numerical character reference, and returns a newly * @param in The string which might contain utf-8 substrings * @return A new string, with utf-8 replaced with numerical character * references, free this with g_free() char *purple_utf8_ncr_encode(const char *in); * Given a string, this replaces any numerical character references * in that string with the corresponding actual utf-8 substrings, * and returns a newly allocated string. * @param in The string which might contain numerical character references. * @return A new string, with numerical character references * replaced with actual utf-8, free this with g_free(). char *purple_utf8_ncr_decode(const char *in); * Given a string, this replaces one substring with another * ignoring case and returns a newly allocated string. * @param string The string from which to replace stuff. * @param delimiter The substring you want replaced. * @param replacement The substring you want inserted in place * of the delimiting substring. * @return A new string, after performing the substitution. * free this with g_free(). gchar *purple_strcasereplace(const char *string, const char *delimiter, const char *replacement); * This is like strstr, except that it ignores ASCII case in * searching for the substring. * @param haystack The string to search in. * @param needle The substring to find. * @return the location of the substring if found, or NULL if not const char *purple_strcasestr(const char *haystack, const char *needle); * Returns a string representing a filesize in the appropriate * units (MB, KB, GB, etc.) * @return The string in units form. This must be freed. char *purple_str_size_to_units(goffset size); * Converts seconds into a human-readable form. * @param sec The seconds. * @return A human-readable form, containing days, hours, minutes, and char *purple_str_seconds_to_string(guint sec); * Converts a binary string into a NUL terminated ascii string, * replacing nonascii characters and characters below SPACE (including * NUL) into \\xyy, where yy are two hex digits. Also backslashes are * changed into two backslashes (\\\\). The returned, newly allocated * string can be outputted to the console, and must be g_free()d. * @param binary A string of random data, possibly with embedded NULs * @param len The length in bytes of the input string. Must not be 0. * @return A newly allocated ASCIIZ string. char *purple_str_binary_to_ascii(const unsigned char *binary, guint len); * Calculates UTF-16 string size (in bytes). * @param str String to check. * @return Number of bytes (including NUL character) that string occupies. size_t purple_utf16_size(const gunichar2 *str); * Fills a NUL-terminated string with zeros and frees it. * It should be used to free sensitive data, like passwords. * @param str A NUL-terminated string to free, or a NULL-pointer. void purple_str_wipe(gchar *str); * Fills a NUL-terminated UTF-16 string with zeros and frees it. * It should be used to free sensitive data, like passwords. * @param str A NUL-terminated string to free, or a NULL-pointer. void purple_utf16_wipe(gunichar2 *str); /**************************************************************************/ /** @name URI/URL Functions */ /**************************************************************************/ void purple_got_protocol_handler_uri(const char *uri); * Decodes a URL into a plain string. * This will change hex codes and such to their ascii equivalents. * @param str The string to translate. * @return The resulting string. const char *purple_url_decode(const char *str); * Encodes a URL into an escaped string. * This will change non-alphanumeric characters to hex codes. * @param str The string to translate. * @return The resulting string. const char *purple_url_encode(const char *str); * Checks if the given email address is syntactically valid. * @param address The email address to validate. * @return True if the email address is syntactically correct. gboolean purple_email_is_valid(const char *address); * Checks if the given IP address is a syntactically valid IPv4 or * If you specifically want to check for an IPv4 address use * purple_ipv4_address_is_valid(), or for an IPv6 address use * purple_ipv6_address_is_valid(). * @param ip The IP address to validate. * @return True if the IP address is syntactically correct. gboolean purple_ip_address_is_valid(const char *ip); * Checks if the given IP address is a syntactically valid IPv4 address. * @param ip The IP address to validate. * @return True if the IP address is syntactically correct. gboolean purple_ipv4_address_is_valid(const char *ip); * Checks if the given IP address is a syntactically valid IPv6 address. * @param ip The IP address to validate. * @return True if the IP address is syntactically correct. gboolean purple_ipv6_address_is_valid(const char *ip); * This function extracts a list of URIs from the a "text/uri-list" * string. It was "borrowed" from gnome_uri_list_extract_uris * @param uri_list An uri-list in the standard format. * @return A GList containing strings allocated with g_malloc * that have been splitted from uri-list. GList *purple_uri_list_extract_uris(const gchar *uri_list); * This function extracts a list of filenames from a * "text/uri-list" string. It was "borrowed" from * gnome_uri_list_extract_filenames * @param uri_list A uri-list in the standard format. * @return A GList containing strings allocated with g_malloc that * contain the filenames in the uri-list. Note that unlike * purple_uri_list_extract_uris() function, this will discard * any non-file uri from the result value. GList *purple_uri_list_extract_filenames(const gchar *uri_list); /************************************************************************** **************************************************************************/ * Attempts to convert a string to UTF-8 from an unknown encoding. * This function checks the locale and tries sane defaults. * @param str The source string. * @return The UTF-8 string, or @c NULL if it could not be converted. gchar *purple_utf8_try_convert(const char *str); * Salvages the valid UTF-8 characters from a string, replacing any * invalid characters with a filler character (currently hardcoded to * @param str The source string. * @return A valid UTF-8 string. gchar *purple_utf8_salvage(const char *str); * Removes unprintable characters from a UTF-8 string. These characters * (in particular low-ASCII characters) are invalid in XML 1.0 and thus * are not allowed in XMPP and are rejected by libxml2 by default. * The returned string must be freed by the caller. * @param str A valid UTF-8 string. * @return A newly allocated UTF-8 string without the unprintable characters. gchar *purple_utf8_strip_unprintables(const gchar *str); * Return the UTF-8 version of gai_strerror(). It calls gai_strerror() * then converts the result to UTF-8. This function is analogous to * @param errnum The error code. * @return The UTF-8 error message. const gchar *purple_gai_strerror(gint errnum); * Compares two UTF-8 strings case-insensitively. This comparison is * more expensive than a simple g_utf8_collate() comparison because * it calls g_utf8_casefold() on each string, which allocates new * @param a The first string. * @param b The second string. * @return -1 if @a a is less than @a b. * 0 if @a a is equal to @a b. * 1 if @a a is greater than @a b. int purple_utf8_strcasecmp(const char *a, const char *b); * Case insensitive search for a word in a string. The needle string * must be contained in the haystack string and not be immediately * preceded or immediately followed by another alpha-numeric character. * @param haystack The string to search in. * @param needle The substring to find. * @return TRUE if haystack has the word, otherwise FALSE gboolean purple_utf8_has_word(const char *haystack, const char *needle); * Prints a UTF-8 message to the given file stream. The function * tries to convert the UTF-8 message to user's locale. If this * is not possible, the original UTF-8 text will be printed. * @param filestream The file stream (e.g. STDOUT or STDERR) * @param message The message to print. void purple_print_utf8_to_console(FILE *filestream, char *message); * Checks for messages starting (post-HTML) with "/me ", including the space. * @param message The message to check * @param len The message length, or -1 * @return TRUE if it starts with "/me ", and it has been removed, otherwise gboolean purple_message_meify(char *message, gssize len); * Removes the underscore characters from a string used identify the mnemonic * @param in The string to strip * @return The stripped string char *purple_text_strip_mnemonic(const char *in); * @param x The number to add 8 to. #define purple_add_eight(x) ((x)+8) * Does the reverse of purple_escape_filename * This will change hex codes and such to their ascii equivalents. * @param str The string to translate. * @return The resulting string. const char *purple_unescape_filename(const char *str); * Escapes filesystem-unfriendly characters from a filename * @param str The string to translate. * @return The resulting string. const char *purple_escape_filename(const char *str); * Escapes javascript-unfriendly substrings from a string. * @param str The string to escape. * @return The javascript-safe string (must be g_free'd after use). gchar * purple_escape_js(const gchar *str); * Restore default signal handlers for signals which might reasonably have * handlers. This should be called by a fork()'d child process, since child processes * inherit the handlers of the parent. void purple_restore_default_signal_handlers(void); * Gets the host name of the machine. If it not possible to determine the * host name, "localhost" is returned * @constreturn The hostname const gchar *purple_get_host_name(void); * Returns a type 4 (random) UUID * @return A UUID, caller is responsible for freeing it gchar *purple_uuid_random(void); * Sets given pointer to NULL. * Function designed to be used as a GDestroyNotify callback. * @param data A pointer to variable, which should be set to NULL. void purple_callback_set_zero(gpointer data); * Creates a new GValue of the specified type. * @param type The type of data to be held by the GValue * @return The created GValue GValue *purple_value_new(GType type); * @param value The GValue to duplicate * @return The duplicated GValue GValue *purple_value_dup(GValue *value); * @param value The GValue to free. void purple_value_free(GValue *value); * Calculates a session key for HTTP Digest authentation * See RFC 2617 for more information. * @param algorithm The hash algorithm to use * @param username The username provided by the user * @param realm The authentication realm provided by the server * @param password The password provided by the user * @param nonce The nonce provided by the server * @param client_nonce The nonce provided by the client * @return The session key, or @c NULL if an error occurred. gchar *purple_http_digest_calculate_session_key( const gchar *algorithm, const gchar *username, const gchar *realm, const gchar *password, const gchar *nonce, const gchar *client_nonce); /** Calculate a response for HTTP Digest authentication * See RFC 2617 for more information. * @param algorithm The hash algorithm to use * @param method The HTTP method in use * @param digest_uri The URI from the initial request * @param qop The "quality of protection" * @param entity The entity body * @param nonce The nonce provided by the server * @param nonce_count The nonce count * @param client_nonce The nonce provided by the client * @param session_key The session key from purple_cipher_http_digest_calculate_session_key() * @return The hashed response, or @c NULL if an error occurred. gchar *purple_http_digest_calculate_response( const gchar *algorithm, const gchar *method, const gchar *digest_uri, const gchar *qop, const gchar *entity, const gchar *nonce, const gchar *nonce_count, const gchar *client_nonce, const gchar *session_key); #endif /* _PURPLE_UTIL_H_ */