* @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 #include "conversation.h" /* 512KiB Default value for maximum HTTP download size (when the client hasn't #define DEFAULT_MAX_HTTP_DOWNLOAD (512 * 1024) #define MAX_HTTP_CHUNK_SIZE (10 * 1024 * 1024) struct _PurpleUtilFetchUrlData PurpleUtilFetchUrlCallback callback; int num_times_redirected; gboolean include_headers; PurpleSslConnection *ssl_connection; PurpleProxyConnectData *connect_data; gboolean has_explicit_data_len; static char *custom_user_dir = NULL; static char *user_dir = NULL; purple_menu_action_new(const char *label, PurpleCallback callback, gpointer data, PurpleMenuAction *act = g_new0(PurpleMenuAction, 1); act->label = g_strdup(label); act->callback = callback; act->children = children; purple_menu_action_free(PurpleMenuAction *act) g_return_if_fail(act != NULL); /* This does nothing right now. It exists for symmetry with * purple_util_uninit() and forwards compatibility. */ /* Free these so we don't have leaks at shutdown. */ /************************************************************************** **************************************************************************/ purple_base16_encode(const guchar *data, gsize len) g_return_val_if_fail(data != NULL, NULL); g_return_val_if_fail(len > 0, NULL); ascii = g_malloc(len * 2 + 1); for (i = 0; i < len; i++) g_snprintf(&ascii[i * 2], 3, "%02hhx", data[i]); purple_base16_decode(const char *str, gsize *ret_len) int len, i, accumulator = 0; g_return_val_if_fail(str != NULL, NULL); g_return_val_if_fail(strlen(str) > 0, 0); g_return_val_if_fail(len % 2 == 0, 0); data = g_malloc(len / 2); for (i = 0; i < len; i++) accumulator |= str[i] - 48; case 'a': accumulator |= 10; break; case 'b': accumulator |= 11; break; case 'c': accumulator |= 12; break; case 'd': accumulator |= 13; break; case 'e': accumulator |= 14; break; case 'f': accumulator |= 15; break; data[(i - 1) / 2] = accumulator; purple_base16_encode_chunked(const guchar *data, gsize len) g_return_val_if_fail(data != NULL, NULL); g_return_val_if_fail(len > 0, NULL); /* For each byte of input, we need 2 bytes for the hex representation * The final colon will be replaced by a terminating NULL ascii = g_malloc(len * 3 + 1); for (i = 0; i < len; i++) g_snprintf(&ascii[i * 3], 4, "%02hhx:", data[i]); /* Replace the final colon with NULL */ /************************************************************************** **************************************************************************/ static const char alphabet[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" static const char xdigits[] = purple_base64_encode(const guchar *data, gsize len) return g_base64_encode(data, len); purple_base64_decode(const char *str, gsize *ret_len) * We want to allow ret_len to be NULL for backward compatibility, * but g_base64_decode() requires a valid length variable. So if * ret_len is NULL then pass in a dummy variable. return g_base64_decode(str, ret_len != NULL ? ret_len : &unused); /************************************************************************** * Quoted Printable Functions (see RFC 2045). **************************************************************************/ purple_quotedp_decode(const char *str, gsize *ret_len) n = new = g_malloc(strlen (str) + 1); for (p = str; p < end; p++, n++) { if (p[1] == '\r' && p[2] == '\n') { /* 5.1 #5 */ } else if (p[1] == '\n') { /* fuzzy case for 5.1 #5 */ } else if (p[1] && p[2]) { char *nibble1 = strchr(xdigits, tolower(p[1])); char *nibble2 = strchr(xdigits, tolower(p[2])); if (nibble1 && nibble2) { /* 5.1 #1 */ *n = ((nibble1 - xdigits) << 4) | (nibble2 - xdigits); } else { /* This should never happen */ } else { /* This should never happen */ /* Resize to take less space */ /* new = realloc(new, n - new); */ /************************************************************************** **************************************************************************/ purple_mime_decode_field(const char *str) * This is wing's version, partially based on revo/shx's version * See RFC2047 [which apparently obsoletes RFC1342] state_start, state_equal1, state_question1, state_charset, state_question2, state_encoding, state_question3, state_encoded_text, state_question4, state_equal2 = state_start encoded_word_state_t state = state_start; const char *charset0 = NULL, *encoding0 = NULL, *encoded_text0 = NULL; /* token can be any CHAR (supposedly ISO8859-1/ISO2022), not just ASCII */ #define token_char_p(c) \ (c != ' ' && !iscntrl(c) && !strchr("()<>@,;:\"/[]?.=", c)) /* But encoded-text must be ASCII; alas, isascii() may not exist */ #define encoded_text_char_p(c) \ ((c & 0x80) == 0 && c != '?' && c != ' ' && isgraph(c)) g_return_val_if_fail(str != NULL, NULL); new = g_string_new(NULL); /* Here we will be looking for encoded words and if they seem to be * valid then decode them. * They are of this form: =?charset?encoding?text?= for (cur = str, mark = NULL; *cur; cur += 1) { g_string_append_len(new, mark, cur - mark + 1); if (token_char_p(*cur)) { } else { /* This should never happen */ g_string_append_len(new, mark, cur - mark + 1); } else if (!token_char_p(*cur)) { /* This should never happen */ g_string_append_len(new, mark, cur - mark + 1); if (token_char_p(*cur)) { } else { /* This should never happen */ g_string_append_len(new, mark, cur - mark + 1); } else if (!token_char_p(*cur)) { /* This should never happen */ g_string_append_len(new, mark, cur - mark + 1); if (encoded_text_char_p(*cur)) { state = state_encoded_text; } else if (*cur == '?') { /* empty string */ } else { /* This should never happen */ g_string_append_len(new, mark, cur - mark + 1); } else if (!encoded_text_char_p(*cur)) { g_string_append_len(new, mark, cur - mark + 1); if (*cur == '=') { /* Got the whole encoded-word */ char *charset = g_strndup(charset0, encoding0 - charset0 - 1); char *encoding = g_strndup(encoding0, encoded_text0 - encoding0 - 1); char *encoded_text = g_strndup(encoded_text0, cur - encoded_text0 - 1); if (g_ascii_strcasecmp(encoding, "Q") == 0) decoded = purple_quotedp_decode(encoded_text, &dec_len); else if (g_ascii_strcasecmp(encoding, "B") == 0) decoded = purple_base64_decode(encoded_text, &dec_len); char *converted = g_convert((const gchar *)decoded, dec_len, "utf-8", charset, NULL, &len, NULL); g_string_append_len(new, converted, len); state = state_equal2; /* Restart the FSM */ } else { /* This should never happen */ g_string_append_len(new, mark, cur - mark + 1); /* Some unencoded text. */ g_string_append_c(new, *cur); if (state != state_start) g_string_append_len(new, mark, cur - mark + 1); return g_string_free(new, FALSE);; /************************************************************************** **************************************************************************/ const char *purple_get_tzoff_str(const struct tm *tm, gboolean iso) g_return_val_if_reached(""); if ((off = wpurple_get_tz_offset()) == -1) # endif /* HAVE_TIMEZONE */ # endif /* !HAVE_TM_GMTOFF */ hrs = ((off / 60) - min) / 60; /* please leave the colons...they're optional for iso, but jabber if(g_snprintf(buf, sizeof(buf), "%+03d:%02d", hrs, ABS(min)) > 6) g_return_val_if_reached(""); if (g_snprintf(buf, sizeof(buf), "%+03d%02d", hrs, ABS(min)) > 5) g_return_val_if_reached(""); /* Windows doesn't HAVE_STRFTIME_Z_FORMAT, but this seems clearer. -- rlaager */ #if !defined(HAVE_STRFTIME_Z_FORMAT) || defined(_WIN32) static size_t purple_internal_strftime(char *s, size_t max, const char *format, const struct tm *tm) /* Yes, this is checked in purple_utf8_strftime(), * but better safe than sorry. -- rlaager */ g_return_val_if_fail(format != NULL, 0); /* This is fairly efficient, and it only gets * executed on Windows or if the underlying * system doesn't support the %z format string, * for strftime() so I think it's good enough. for (c = start = format; *c ; c++) #ifndef HAVE_STRFTIME_Z_FORMAT char *tmp = g_strdup_printf("%s%.*s%s", purple_get_tzoff_str(tm, FALSE)); char *tmp = g_strdup_printf("%s%.*s%s", wpurple_get_timezone_abbreviation(tm)); char *tmp = g_strconcat(fmt, start, NULL); ret = strftime(s, max, fmt, tm); return strftime(s, max, format, tm); #else /* HAVE_STRFTIME_Z_FORMAT && !_WIN32 */ #define purple_internal_strftime strftime purple_utf8_strftime(const char *format, const struct tm *tm) g_return_val_if_fail(format != NULL, NULL); locale = g_locale_from_utf8(format, -1, NULL, NULL, &err); purple_debug_error("util", "Format conversion failed in purple_utf8_strftime(): %s\n", err->message); locale = g_strdup(format); /* A return value of 0 is either an error (in * which case, the contents of the buffer are * undefined) or the empty string (in which * case, no harm is done here). */ if ((len = purple_internal_strftime(buf, sizeof(buf), locale, tm)) == 0) utf8 = g_locale_to_utf8(buf, len, NULL, NULL, &err); purple_debug_error("util", "Result conversion failed in purple_utf8_strftime(): %s\n", err->message); purple_strlcpy(buf, utf8); purple_date_format_short(const struct tm *tm) return purple_utf8_strftime("%x", tm); purple_date_format_long(const struct tm *tm) * This string determines how some dates are displayed. The default * string "%x %X" shows the date then the time. Translators can * change this to "%X %x" if they want the time to be shown first, return purple_utf8_strftime(_("%x %X"), tm); purple_date_format_full(const struct tm *tm) return purple_utf8_strftime("%c", tm); purple_time_format(const struct tm *tm) return purple_utf8_strftime("%X", tm); purple_time_build(int year, int month, int day, int hour, int min, int sec) tm.tm_year = year - 1900; tm.tm_sec = sec >= 0 ? sec : time(NULL) % 60; /* originally taken from GLib trunk 1-6-11 */ /* originally licensed as LGPL 2+ */ mktime_utc(struct tm *tm) static const gint days_before[] = 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 if (tm->tm_mon < 0 || tm->tm_mon > 11) retval = (tm->tm_year - 70) * 365; retval += (tm->tm_year - 68) / 4; retval += days_before[tm->tm_mon] + tm->tm_mday - 1; if (tm->tm_year % 4 == 0 && tm->tm_mon < 2) retval = ((((retval * 24) + tm->tm_hour) * 60) + tm->tm_min) * 60 + tm->tm_sec; #endif /* !HAVE_TIMEGM */ purple_str_to_time(const char *timestamp, gboolean utc, struct tm *tm, long *tz_off, const char **rest) long tzoff = PURPLE_NO_TZ_OFF; gboolean mktime_with_utc = FALSE; g_return_val_if_fail(timestamp != NULL, 0); memset(&t, 0, sizeof(struct tm)); /* Strip leading whitespace */ while (g_ascii_isspace(*str)) if (rest != NULL && *str != '\0') if (!g_ascii_isdigit(*str) && *str != '-' && *str != '+') { if (rest != NULL && *str != '\0') if (sscanf(str, "%04d", &year) && year >= 1900) { if (*str == '-' || *str == '/') if (!sscanf(str, "%02d", &t.tm_mon)) { if (rest != NULL && *str != '\0') if (*str == '-' || *str == '/') if (!sscanf(str, "%02d", &t.tm_mday)) { if (rest != NULL && *str != '\0') /* Grab the year off the end if there's still stuff */ if (*str == '/' || *str == '-') { /* But make sure we don't read the year twice */ if (rest != NULL && *str != '\0') if (!sscanf(str, "%04d", &t.tm_year)) { if (rest != NULL && *str != '\0') } else if (*str == 'T' || *str == '.') { /* Continue grabbing the hours/minutes/seconds */ if ((sscanf(str, "%02d:%02d:%02d", &t.tm_hour, &t.tm_min, &t.tm_sec) == 3 && (sscanf(str, "%02d%02d%02d", &t.tm_hour, &t.tm_min, &t.tm_sec) == 3 && gint sign, tzhrs, tzmins; /* Cut off those pesky micro-seconds */ } while (*str >= '0' && *str <= '9'); sign = (*str == '+') ? 1 : -1; /* Process the timezone */ if (*str == '+' || *str == '-') { if (((sscanf(str, "%02d:%02d", &tzhrs, &tzmins) == 2 && (str += 5)) || (sscanf(str, "%02d%02d", &tzhrs, &tzmins) == 2 && (str += 4)))) tzoff = tzhrs * 60 * 60 + tzmins * 60; } else if (*str == 'Z') { /* No timezone specified. */ if (rest != NULL && *str != '\0') { /* Strip trailing whitespace */ while (g_ascii_isspace(*str)) if (tzoff != PURPLE_NO_TZ_OFF) /************************************************************************** **************************************************************************/ * This function is stolen from glib's gmarkup.c and modified to not static void append_escaped_text(GString *str, const gchar *text, gssize length) next = g_utf8_next_char (p); g_string_append (str, "&"); g_string_append (str, "<"); g_string_append (str, ">"); g_string_append (str, """); if ((0x1 <= c && c <= 0x8) || (0xb <= c && c <= 0xc) || (0xe <= c && c <= 0x1f) || (0x7f <= c && c <= 0x84) || (0x86 <= c && c <= 0x9f)) g_string_append_printf (str, "&#x%x;", c); g_string_append_len (str, p, next - p); /* This function is stolen from glib's gmarkup.c */ gchar *purple_markup_escape_text(const gchar *text, gssize length) g_return_val_if_fail(text != NULL, NULL); /* prealloc at least as long as original text */ str = g_string_sized_new(length); append_escaped_text(str, text, length); return g_string_free(str, FALSE); purple_markup_unescape_entity(const char *text, int *length) if (!text || *text != '&') #define IS_ENTITY(s) (!g_ascii_strncasecmp(text, s, (len = sizeof(s) - 1))) else if(IS_ENTITY("<")) else if(IS_ENTITY(">")) else if(IS_ENTITY(" ")) else if(IS_ENTITY("©")) pln = "\302\251"; /* or use g_unichar_to_utf8(0xa9); */ else if(IS_ENTITY(""")) else if(IS_ENTITY("®")) pln = "\302\256"; /* or use g_unichar_to_utf8(0xae); */ else if(IS_ENTITY("'")) else if(*(text+1) == '#' && (sscanf(text, "&#%u%1[;]", £, temp) == 2 || sscanf(text, "&#x%x%1[;]", £, temp) == 2) && int buflen = g_unichar_to_utf8((gunichar)pound, buf); len = (*(text+2) == 'x' ? 3 : 2); while(isxdigit((gint) text[len])) len++; if(text[len] == ';') len++; purple_markup_get_css_property(const gchar *style, const gchar *css_str = style; const gchar *css_value_start; const gchar *css_value_end; g_return_val_if_fail(opt != NULL, NULL); /* find the CSS property */ /* skip whitespace characters */ while (*css_str && g_ascii_isspace(*css_str)) if (!g_ascii_isalpha(*css_str)) if (g_ascii_strncasecmp(css_str, opt, strlen(opt))) /* go to next css property positioned after the next ';' */ while (*css_str && *css_str != '"' && *css_str != ';') /* find the CSS value position in the string */ while (*css_str && g_ascii_isspace(*css_str)) while (*css_str && g_ascii_isspace(*css_str)) if (*css_str == '\0' || *css_str == '"' || *css_str == ';') css_value_start = css_str; while (*css_str && *css_str != '"' && *css_str != ';') css_value_end = css_str - 1; /* Removes trailing whitespace */ while (css_value_end > css_value_start && g_ascii_isspace(*css_value_end)) tmp = g_strndup(css_value_start, css_value_end - css_value_start + 1); ret = purple_unescape_html(tmp); gboolean purple_markup_is_rtl(const char *html) const gchar *start, *end; if (purple_markup_find_tag("span", html, &start, &end, &attributes)) /* tmp is a member of attributes and is free with g_datalist_clear call */ const char *tmp = g_datalist_get_data(&attributes, "dir"); if (tmp && !g_ascii_strcasecmp(tmp, "RTL")) tmp = g_datalist_get_data(&attributes, "style"); char *tmp2 = purple_markup_get_css_property(tmp, "direction"); if (tmp2 && !g_ascii_strcasecmp(tmp2, "RTL")) g_datalist_clear(&attributes); purple_markup_find_tag(const char *needle, const char *haystack, const char **start, const char **end, GData **attributes) const char *cur = haystack; gboolean in_attr = FALSE; const char *in_quotes = NULL; g_return_val_if_fail( needle != NULL, FALSE); g_return_val_if_fail( *needle != '\0', FALSE); g_return_val_if_fail( haystack != NULL, FALSE); g_return_val_if_fail( start != NULL, FALSE); g_return_val_if_fail( end != NULL, FALSE); g_return_val_if_fail(attributes != NULL, FALSE); needlelen = strlen(needle); g_datalist_init(&attribs); while (*close && *close != *in_quotes) /* if we got the close quote, store the value and carry on from * * after it. if we ran to the end of the string, point to the NULL * * and we're outta here */ /* only store a value if we have an attribute name */ size_t len = close - cur; char *val = g_strndup(cur, len); g_datalist_set_data_full(&attribs, name, val, g_free); while (*close && *close != '>' && *close != '"' && *close != '\'' && *close != ' ' && *close != '=') /* if we got the equals, store the name of the attribute. if we got * the quote, save the attribute and go straight to quote mode. * otherwise the tag closed or we reached the end of the string, * so we can get outta here */ size_t len = close - cur; /* don't store a blank attribute name */ name = g_ascii_strdown(cur, len); /* swallow extra spaces inside tag */ while (*cur && *cur == ' ') cur++; /* if we hit a < followed by the name of our tag... */ if (*cur == '<' && !g_ascii_strncasecmp(cur + 1, needle, needlelen)) { cur = cur + needlelen + 1; /* if we're pointing at a space or a >, we found the right tag. if * * we're not, we've found a longer tag, so we need to skip to the * * >, but not being distracted by >s inside quotes. */ if (*cur == ' ' || *cur == '>') { while (*cur && *cur != '"' && *cur != '\'' && *cur != '>') { while (*cur && *cur != '"') } else if (*cur == '\'') { while (*cur && *cur != '\'') /* clean up any attribute name from a premature termination */ 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) g_return_val_if_fail(str != NULL, FALSE); g_return_val_if_fail(user_info != NULL, FALSE); g_return_val_if_fail(start_token != NULL, FALSE); g_return_val_if_fail(end_token != NULL, FALSE); g_return_val_if_fail(display_name != NULL, FALSE); p = strstr(str, start_token); p += strlen(start_token) + skip; if (check_value != '\0' && *p == check_value) q = strstr(p, end_token); /* Trim leading blanks */ while (*p != '\n' && g_ascii_isspace(*p)) { /* Trim trailing blanks */ while (q > p && g_ascii_isspace(*(q - 1))) { /* Don't bother with null strings */ if (q != NULL && (!no_value_token || (no_value_token && strncmp(p, no_value_token, strlen(no_value_token))))) GString *dest = g_string_new(""); g_string_append(dest, "<a href=\""); g_string_append(dest, link_prefix); char *reformatted = format_cb(p, q - p); g_string_append(dest, reformatted); g_string_append_len(dest, p, q - p); g_string_append(dest, "\">"); g_string_append(dest, link_prefix); g_string_append_len(dest, p, q - p); g_string_append(dest, "</a>"); char *reformatted = format_cb(p, q - p); g_string_append(dest, reformatted); g_string_append_len(dest, p, q - p); purple_notify_user_info_add_pair(user_info, display_name, dest->str); g_string_free(dest, TRUE); struct purple_parse_tag { /* NOTE: Do not put `do {} while(0)` around this macro (as this is the method recommended in the GCC docs). It contains 'continue's that should affect the while-loop in purple_markup_html_to_xhtml and doing the Also, remember to put braces in constructs that require them for multiple statements when using this macro. */ #define ALLOW_TAG_ALT(x, y) if(!g_ascii_strncasecmp(c, "<" x " ", strlen("<" x " "))) { \ const char *o = c + strlen("<" x); \ const char *p = NULL, *q = NULL, *r = NULL; \ /* o = iterating over full tag \ * q = start of quoted bit \ GString *innards = g_string_new(""); \ if(!q && (*o == '\"' || *o == '\'') ) { \ if(*o == *q) { /* end of quoted bit */ \ char *unescaped = g_strndup(q+1, o-q-1); \ char *escaped = g_markup_escape_text(unescaped, -1); \ g_string_append_printf(innards, "%c%s%c", *q, escaped, *q); \ } else if(*c == '\\') { \ innards = g_string_append_c(innards, *o); \ if(p && !r) { /* got an end of tag and no other < earlier */\ struct purple_parse_tag *pt = g_new0(struct purple_parse_tag, 1); \ tags = g_list_prepend(tags, pt); \ xhtml = g_string_append(xhtml, "<" y); \ xhtml = g_string_append(xhtml, innards->str); \ xhtml = g_string_append_c(xhtml, '>'); \ } else { /* got end of tag with earlier < *or* didn't get anything */ \ xhtml = g_string_append(xhtml, "<"); \ plain = g_string_append_c(plain, '<'); \ g_string_free(innards, TRUE); \ if(!g_ascii_strncasecmp(c, "<" x, strlen("<" x)) && \ (*(c+strlen("<" x)) == '>' || \ !g_ascii_strncasecmp(c+strlen("<" x), "/>", 2))) { \ xhtml = g_string_append(xhtml, "<" y); \ struct purple_parse_tag *pt = g_new0(struct purple_parse_tag, 1); \ tags = g_list_prepend(tags, pt); \ xhtml = g_string_append_c(xhtml, '>'); \ xhtml = g_string_append(xhtml, "/>");\ c = strchr(c, '>') + 1; \ /* Don't forget to check the note above for ALLOW_TAG_ALT. */ #define ALLOW_TAG(x) ALLOW_TAG_ALT(x, x) purple_markup_html_to_xhtml(const char *html, char **xhtml_out, GList *tags = NULL, *tag; #define CHECK_QUOTE(ptr) if (*(ptr) == '\'' || *(ptr) == '\"') \ #define VALID_CHAR(ptr) (*(ptr) && *(ptr) != quote && (quote || (*(ptr) != ' ' && *(ptr) != '>'))) g_return_if_fail(xhtml_out != NULL || plain_out != NULL); xhtml = g_string_new(""); plain = g_string_new(""); if(*(c+1) == '/') { /* closing tag */ struct purple_parse_tag *pt = tag->data; if(!g_ascii_strncasecmp((c+2), pt->src_tag, strlen(pt->src_tag)) && *(c+strlen(pt->src_tag)+2) == '>') { c += strlen(pt->src_tag) + 3; struct purple_parse_tag *pt = tags->data; g_string_append_printf(xhtml, "</%s>", pt->dest_tag); if(plain && purple_strequal(pt->src_tag, "a")) { /* if this is a link, we have to add the url to the plaintext, too */ (!g_string_equal(cdata, url) && (g_ascii_strncasecmp(url->str, "mailto:", 7) != 0 || g_utf8_collate(url->str + 7, cdata->str) != 0))) g_string_append_printf(plain, " <%s>", g_strstrip(url->str)); g_string_free(cdata, TRUE); tags = g_list_remove(tags, pt); tags = g_list_remove(tags, tag->data); /* a closing tag we weren't expecting... * we'll let it slide, if it's really a tag...if it's * just a </ we'll escape it properly */ while(*end && g_ascii_isalpha(*end)) xhtml = g_string_append(xhtml, "<"); plain = g_string_append_c(plain, '<'); } else { /* opening tag */ /* we only allow html to start the message */ ALLOW_TAG_ALT("i", "em"); ALLOW_TAG_ALT("italic", "em"); /* we skip <HR> because it's not legal in XHTML-IM. However, * we still want to send something sensible, so we put a * linebreak in its place. <BR> also needs special handling * because putting a </BR> to close it would just be dumb. */ if((!g_ascii_strncasecmp(c, "<br", 3) || !g_ascii_strncasecmp(c, "<hr", 3)) !g_ascii_strncasecmp(c+3, "/>", 2) || !g_ascii_strncasecmp(c+3, " />", 3))) { xhtml = g_string_append(xhtml, "<br/>"); plain = g_string_append_c(plain, '\n'); if(!g_ascii_strncasecmp(c, "<b>", 3) || !g_ascii_strncasecmp(c, "<bold>", strlen("<bold>")) || !g_ascii_strncasecmp(c, "<strong>", strlen("<strong>"))) { struct purple_parse_tag *pt = g_new0(struct purple_parse_tag, 1); tags = g_list_prepend(tags, pt); xhtml = g_string_append(xhtml, "<span style='font-weight: bold;'>"); if(!g_ascii_strncasecmp(c, "<u>", 3) || !g_ascii_strncasecmp(c, "<underline>", strlen("<underline>"))) { struct purple_parse_tag *pt = g_new0(struct purple_parse_tag, 1); pt->src_tag = *(c+2) == '>' ? "u" : "underline"; tags = g_list_prepend(tags, pt); xhtml = g_string_append(xhtml, "<span style='text-decoration: underline;'>"); if(!g_ascii_strncasecmp(c, "<s>", 3) || !g_ascii_strncasecmp(c, "<strike>", strlen("<strike>"))) { struct purple_parse_tag *pt = g_new0(struct purple_parse_tag, 1); pt->src_tag = *(c+2) == '>' ? "s" : "strike"; tags = g_list_prepend(tags, pt); xhtml = g_string_append(xhtml, "<span style='text-decoration: line-through;'>"); if(!g_ascii_strncasecmp(c, "<sub>", 5)) { struct purple_parse_tag *pt = g_new0(struct purple_parse_tag, 1); tags = g_list_prepend(tags, pt); xhtml = g_string_append(xhtml, "<span style='vertical-align:sub;'>"); if(!g_ascii_strncasecmp(c, "<sup>", 5)) { struct purple_parse_tag *pt = g_new0(struct purple_parse_tag, 1); tags = g_list_prepend(tags, pt); xhtml = g_string_append(xhtml, "<span style='vertical-align:super;'>"); if (!g_ascii_strncasecmp(c, "<img", 4) && (*(c+4) == '>' || *(c+4) == ' ')) { GString *src = NULL, *alt = NULL; while (*p && *p != '>') { if (!g_ascii_strncasecmp(p, "src=", 4)) { g_string_free(src, TRUE); src = g_string_append_c(src, *q); } else if (!g_ascii_strncasecmp(p, "alt=", 4)) { g_string_free(alt, TRUE); alt = g_string_append_c(alt, *q); if ((c = strchr(p, '>')) != NULL) /* src and alt are required! */ g_string_append_printf(xhtml, "<img src='%s' alt='%s' />", g_strstrip(src->str), alt ? alt->str : ""); plain = g_string_append(plain, alt->str); xhtml = g_string_append(xhtml, alt->str); g_string_free(alt, TRUE); g_string_free(src, TRUE); if (!g_ascii_strncasecmp(c, "<a", 2) && (*(c+2) == '>' || *(c+2) == ' ')) { struct purple_parse_tag *pt; while (*p && *p != '>') { if (!g_ascii_strncasecmp(p, "href=", 5)) { g_string_free(url, TRUE); g_string_free(cdata, TRUE); cdata = g_string_new(""); if ((*q == '&') && (purple_markup_unescape_entity(q, &len) == NULL)) url = g_string_append(url, "&"); url = g_string_append_c(url, *q); if ((c = strchr(p, '>')) != NULL) pt = g_new0(struct purple_parse_tag, 1); tags = g_list_prepend(tags, pt); g_string_append_printf(xhtml, "<a href=\"%s\">", url ? g_strstrip(url->str) : ""); if(!g_ascii_strncasecmp(c, "<font", 5) && (*(c+5) == '>' || *(c+5) == ' ')) { GString *style = g_string_new(""); struct purple_parse_tag *pt; while (*p && *p != '>') { if (!g_ascii_strncasecmp(p, "back=", 5)) { GString *color = g_string_new(""); color = g_string_append_c(color, *q); g_string_append_printf(style, "background: %s; ", color->str); g_string_free(color, TRUE); } else if (!g_ascii_strncasecmp(p, "color=", 6)) { GString *color = g_string_new(""); color = g_string_append_c(color, *q); g_string_append_printf(style, "color: %s; ", color->str); g_string_free(color, TRUE); } else if (!g_ascii_strncasecmp(p, "face=", 5)) { GString *face = g_string_new(""); face = g_string_append_c(face, *q); g_string_append_printf(style, "font-family: %s; ", g_strstrip(face->str)); g_string_free(face, TRUE); } else if (!g_ascii_strncasecmp(p, "size=", 5)) { const char *size = "medium"; g_string_append_printf(style, "font-size: %s; ", size); if ((c = strchr(p, '>')) != NULL) pt = g_new0(struct purple_parse_tag, 1); tags = g_list_prepend(tags, pt); g_string_append_printf(xhtml, "<span style='%s'>", g_strstrip(style->str)); g_string_free(style, TRUE); if (!g_ascii_strncasecmp(c, "<body ", 6)) { gboolean did_something = FALSE; while (*p && *p != '>') { if (!g_ascii_strncasecmp(p, "bgcolor=", 8)) { struct purple_parse_tag *pt = g_new0(struct purple_parse_tag, 1); GString *color = g_string_new(""); color = g_string_append_c(color, *q); g_string_append_printf(xhtml, "<span style='background: %s;'>", g_strstrip(color->str)); g_string_free(color, TRUE); if ((c = strchr(p, '>')) != NULL) tags = g_list_prepend(tags, pt); if (did_something) continue; /* this has to come after the special case for bgcolor */ if(!g_ascii_strncasecmp(c, "<!--", strlen("<!--"))) { char *p = strstr(c + strlen("<!--"), "-->"); xhtml = g_string_append(xhtml, "<!--"); xhtml = g_string_append(xhtml, "<"); plain = g_string_append_c(plain, '<'); if ((pln = purple_markup_unescape_entity(c, &len)) == NULL) { g_snprintf(buf, sizeof(buf), "%c", *c); xhtml = g_string_append_len(xhtml, c, len); plain = g_string_append(plain, pln); cdata = g_string_append_len(cdata, c, len); xhtml = g_string_append_c(xhtml, *c); plain = g_string_append_c(plain, *c); cdata = g_string_append_c(cdata, *c); for (tag = tags; tag ; tag = tag->next) { struct purple_parse_tag *pt = tag->data; g_string_append_printf(xhtml, "</%s>", pt->dest_tag); *xhtml_out = g_string_free(xhtml, FALSE); *plain_out = g_string_free(plain, FALSE); g_string_free(url, TRUE); g_string_free(cdata, TRUE); /* The following are probably reasonable changes: * - \n should be converted to a normal space * - in addition to <br>, <p> and <div> etc. should also be converted into \n * - We want to turn </td>#whitespace<td> sequences into a single tab * - We want to turn <td> into a single tab (for msn profile "parsing") * - We want to turn </tr>#whitespace<tr> sequences into a single \n * - <script>...</script> and <style>...</style> should be completely removed purple_markup_strip_html(const char *str) gboolean closing_td_p = FALSE; const gchar *cdata_close_tag = NULL, *ent; for (i = 0, j = 0; str2[i]; i++) /* Note: Don't even assume any other tag is a tag in CDATA */ if (g_ascii_strncasecmp(str2 + i, cdata_close_tag, strlen(cdata_close_tag)) == 0) i += strlen(cdata_close_tag) - 1; else if (g_ascii_strncasecmp(str2 + i, "<td", 3) == 0 && closing_td_p) else if (g_ascii_strncasecmp(str2 + i, "</td>", 5) == 0) if(g_ascii_isspace(str2[k])) /* Scan until we end the tag either implicitly (closed start * tag) or explicitly, using a sloppy method (i.e., < or > * inside quoted attributes will screw us up) while (str2[k] && str2[k] != '<' && str2[k] != '>') /* If we've got an <a> tag with an href, save the address if (g_ascii_strncasecmp(str2 + i, "<a", 2) == 0 && g_ascii_isspace(str2[i+2])) int st; /* start of href, inclusive [ */ int end; /* end of href, exclusive ) */ for (st = i + 3; st < k; st++) if (g_ascii_strncasecmp(str2+st, "href=", 5) == 0) if (str2[st] == '"' || str2[st] == '\'') /* find end of address */ for (end = st; end < k && str2[end] != delim; end++) /* All the work is done in the loop construct above. */ /* If there's an address, save it. If there was * already one saved, kill it. */ tmp = g_strndup(str2 + st, end - st); href = purple_unescape_html(tmp); /* Replace </a> with an ascii representation of the * address the link was pointing to. */ else if (href != NULL && g_ascii_strncasecmp(str2 + i, "</a>", 4) == 0) size_t hrlen = strlen(href); /* Only insert the href if it's different from the CDATA. */ if ((hrlen != j - href_st || strncmp(str2 + href_st, href, hrlen)) && (hrlen != j - href_st + 7 || /* 7 == strlen("http://") */ strncmp(str2 + href_st, href + 7, hrlen - 7))) g_memmove(str2 + j, href, hrlen); /* Check for tags which should be mapped to newline (but ignore some of * the tags at the beginning of the text) */ else if ((j && (g_ascii_strncasecmp(str2 + i, "<p>", 3) == 0 || g_ascii_strncasecmp(str2 + i, "<tr", 3) == 0 || g_ascii_strncasecmp(str2 + i, "<hr", 3) == 0 || g_ascii_strncasecmp(str2 + i, "<li", 3) == 0 || g_ascii_strncasecmp(str2 + i, "<div", 4) == 0)) || g_ascii_strncasecmp(str2 + i, "<br", 3) == 0 || g_ascii_strncasecmp(str2 + i, "</table>", 8) == 0) /* Check for tags which begin CDATA and need to be closed */ #if 0 /* FIXME.. option is end tag optional, we can't handle this right now */ else if (g_ascii_strncasecmp(str2 + i, "<option", 7) == 0) /* FIXME: We should not do this if the OPTION is SELECT'd */ cdata_close_tag = "</option>"; else if (g_ascii_strncasecmp(str2 + i, "<script", 7) == 0) cdata_close_tag = "</script>"; else if (g_ascii_strncasecmp(str2 + i, "<style", 6) == 0) cdata_close_tag = "</style>"; /* Update the index and continue checking after the tag */ i = (str2[k] == '<' || str2[k] == '\0')? k - 1: k; else if (cdata_close_tag) else if (!g_ascii_isspace(str2[i])) if (str2[i] == '&' && (ent = purple_markup_unescape_entity(str2 + i, &entlen)) != NULL) str2[j++] = g_ascii_isspace(str2[i])? ' ': str2[i]; if (!g_ascii_strncasecmp(c, "<", 4) || !g_ascii_strncasecmp(c, ">", 4) || !g_ascii_strncasecmp(c, """, 6)) { process_link(GString *ret, const char *start, const char *c, char *url_buf, *tmpurlbuf; if (!badchar(*t) && !badentity(t)) if (*t == ',' && *(t + 1) != ' ') { if (t > start && *(t - 1) == '.') if (t > start && *(t - 1) == ')' && inside_paren > 0) url_buf = g_strndup(c, t - c); tmpurlbuf = purple_unescape_html(url_buf); g_string_append_printf(ret, "<A HREF=\"%s%s\">%s</A>", purple_markup_linkify(const char *text) const char *c, *t, *q = NULL; char *tmpurlbuf, *url_buf; gboolean inside_html = FALSE; if(*c == '(' && !inside_html) { ret = g_string_append_c(ret, *c); } else if(!q && (*c == '\"' || *c == '\'')) { if (!g_ascii_strncasecmp(c, "<A", 2)) { if (!g_ascii_strncasecmp(c, "/A>", 3)) { ret = g_string_append_c(ret, *c); } else if (!g_ascii_strncasecmp(c, "http://", 7)) { c = process_link(ret, text, c, 7, "", inside_paren); } else if (!g_ascii_strncasecmp(c, "https://", 8)) { c = process_link(ret, text, c, 8, "", inside_paren); } else if (!g_ascii_strncasecmp(c, "ftp://", 6)) { c = process_link(ret, text, c, 6, "", inside_paren); } else if (!g_ascii_strncasecmp(c, "sftp://", 7)) { c = process_link(ret, text, c, 7, "", inside_paren); } else if (!g_ascii_strncasecmp(c, "file://", 7)) { c = process_link(ret, text, c, 7, "", inside_paren); } else if (!g_ascii_strncasecmp(c, "www.", 4) && c[4] != '.' && (c == text || badchar(c[-1]) || badentity(c-1))) { c = process_link(ret, text, c, 4, "http://", inside_paren); } else if (!g_ascii_strncasecmp(c, "ftp.", 4) && c[4] != '.' && (c == text || badchar(c[-1]) || badentity(c-1))) { c = process_link(ret, text, c, 4, "ftp://", inside_paren); } else if (!g_ascii_strncasecmp(c, "xmpp:", 5) && (c == text || badchar(c[-1]) || badentity(c-1))) { c = process_link(ret, text, c, 5, "", inside_paren); } else if (!g_ascii_strncasecmp(c, "mailto:", 7)) { if (badchar(*t) || badentity(t)) { if (t > text && *(t - 1) == '.') if ((d = strstr(c + 7, "?")) != NULL && d < t) url_buf = g_strndup(c + 7, d - c - 7); url_buf = g_strndup(c + 7, t - c - 7); if (!purple_email_is_valid(url_buf)) { url_buf = g_strndup(c, t - c); tmpurlbuf = purple_unescape_html(url_buf); g_string_append_printf(ret, "<A HREF=\"%s\">%s</A>", } else if (c != text && (*c == '@')) { GString *gurl_buf = NULL; const char illegal_chars[] = "!@#$%^&*()[]{}/|\\<>\":;\r\n \0"; if (strchr(illegal_chars,*(c - 1)) || strchr(illegal_chars, *(c + 1))) gurl_buf = g_string_new(""); /* iterate backwards grabbing the local part of an email address */ if (badchar(*t) || (g >= 127) || (*t == '(') || ((*t == ';') && ((t > (text+2) && (!g_ascii_strncasecmp(t - 3, "<", 4) || !g_ascii_strncasecmp(t - 3, ">", 4))) || (t > (text+4) && (!g_ascii_strncasecmp(t - 5, """, 6)))))) { /* local part will already be part of ret, strip it out */ ret = g_string_truncate(ret, ret->len - (c - t)); ret = g_string_append_unichar(ret, g); g_string_prepend_unichar(gurl_buf, g); t = g_utf8_find_prev_char(text, t); ret = g_string_assign(ret, ""); t = g_utf8_find_next_char(c, NULL); /* iterate forwards grabbing the domain part of an email address */ if (badchar(*t) || (g >= 127) || (*t == ')') || badentity(t)) { url_buf = g_string_free(gurl_buf, FALSE); /* strip off trailing periods */ if (strlen(url_buf) > 0) { for (d = url_buf + strlen(url_buf) - 1; *d == '.'; d--, t--) tmpurlbuf = purple_unescape_html(url_buf); if (purple_email_is_valid(tmpurlbuf)) { g_string_append_printf(ret, "<A HREF=\"mailto:%s\">%s</A>", g_string_append(ret, url_buf); g_string_append_unichar(gurl_buf, g); t = g_utf8_find_next_char(t, NULL); if(*c == ')' && !inside_html) { ret = g_string_append_c(ret, *c); ret = g_string_append_c(ret, *c); return g_string_free(ret, FALSE); char *purple_unescape_text(const char *in) if ((ent = purple_markup_unescape_entity(c, &len)) != NULL) { g_string_append(ret, ent); g_string_append_c(ret, *c); return g_string_free(ret, FALSE); char *purple_unescape_html(const char *html) if ((ent = purple_markup_unescape_entity(c, &len)) != NULL) { g_string_append(ret, ent); } else if (!strncmp(c, "<br>", 4)) { g_string_append_c(ret, '\n'); g_string_append_c(ret, *c); return g_string_free(ret, FALSE); purple_markup_slice(const char *str, guint x, guint y) gboolean appended = FALSE; g_return_val_if_fail(str != NULL, NULL); g_return_val_if_fail(x <= y, NULL); while (*str && (z < y)) { c = g_utf8_get_char(str); char *end = strchr(str, '>'); g_string_free(ret, TRUE); while ((tag = g_queue_pop_head(q))) if (!g_ascii_strncasecmp(str, "<img ", 5)) { } else if (!g_ascii_strncasecmp(str, "<br", 3)) { } else if (!g_ascii_strncasecmp(str, "<hr>", 4)) { } else if (!g_ascii_strncasecmp(str, "</", 2)) { tmp = g_queue_pop_head(q); /* push it unto the stack */ tmp = g_strndup(str, end - str + 1); g_queue_push_head(q, tmp); g_string_append_len(ret, str, end - str + 1); char *end = strchr(str, ';'); g_string_free(ret, TRUE); while ((tag = g_queue_pop_head(q))) g_string_append_len(ret, str, end - str + 1); if (z == x && z > 0 && !appended) { g_string_append(ret, tag); g_string_append_unichar(ret, c); str = g_utf8_next_char(str); while ((tag = g_queue_pop_head(q))) { name = purple_markup_get_tag_name(tag); g_string_append_printf(ret, "</%s>", name); return g_string_free(ret, FALSE); purple_markup_get_tag_name(const char *tag) g_return_val_if_fail(tag != NULL, NULL); g_return_val_if_fail(*tag == '<', NULL); if (tag[i] == '>' || tag[i] == ' ' || tag[i] == '/') return g_strndup(tag+1, i-1); /************************************************************************** * Path/Filename Functions **************************************************************************/ return wpurple_data_dir(); /* Returns the argument passed to -c IFF it was present, or ~/.purple. */ if (custom_user_dir != NULL) user_dir = g_build_filename(purple_home_dir(), ".purple", NULL); void purple_util_set_user_dir(const char *dir) custom_user_dir = g_strdup(dir); int purple_build_dir (const char *path, int mode) return g_mkdir_with_parents(path, mode); * This function is long and beautiful, like my--um, yeah. Anyway, * it includes lots of error checking so as we don't overwrite * people's settings if there is a problem writing the new values. purple_util_write_data_to_file(const char *filename, const char *data, gssize size) const char *user_dir = purple_user_dir(); g_return_val_if_fail(user_dir != NULL, FALSE); purple_debug_info("util", "Writing file %s to directory %s\n", /* Ensure the user directory exists */ if (!g_file_test(user_dir, G_FILE_TEST_IS_DIR)) if (g_mkdir(user_dir, S_IRUSR | S_IWUSR | S_IXUSR) == -1) purple_debug_error("util", "Error creating directory %s: %s\n", user_dir, g_strerror(errno)); filename_full = g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s", user_dir, filename); ret = purple_util_write_data_to_file_absolute(filename_full, data, size); purple_util_write_data_to_file_absolute(const char *filename_full, const char *data, gssize size) size_t real_size, byteswritten; purple_debug_info("util", "Writing file %s\n", g_return_val_if_fail((size >= -1), FALSE); filename_temp = g_strdup_printf("%s.save", filename_full); /* Remove an old temporary file, if one exists */ if (g_file_test(filename_temp, G_FILE_TEST_EXISTS)) if (g_unlink(filename_temp) == -1) purple_debug_error("util", "Error removing old file " filename_temp, g_strerror(errno)); file = g_fopen(filename_temp, "wb"); purple_debug_error("util", "Error opening file %s for " filename_temp, g_strerror(errno)); real_size = (size == -1) ? strlen(data) : (size_t) size; byteswritten = fwrite(data, 1, real_size, file); /* Apparently XFS (and possibly other filesystems) do not * guarantee that file data is flushed before file metadata, * so this procedure is insufficient without some flushage. */ purple_debug_error("util", "Error flushing %s: %s\n", filename_temp, g_strerror(errno)); if (fsync(fileno(file)) < 0) { purple_debug_error("util", "Error syncing file contents for %s: %s\n", filename_temp, g_strerror(errno)); purple_debug_error("util", "Error closing file %s: %s\n", filename_temp, g_strerror(errno)); /* This is the same effect (we hope) as the HAVE_FILENO block * above, but for systems without fileno(). */ if ((fd = open(filename_temp, O_RDWR)) < 0) { purple_debug_error("util", "Error opening file %s for flush: %s\n", filename_temp, g_strerror(errno)); purple_debug_error("util", "Error syncing %s: %s\n", filename_temp, g_strerror(errno)); purple_debug_error("util", "Error closing %s after sync: %s\n", filename_temp, g_strerror(errno)); /* Ensure the file is the correct size */ if (byteswritten != real_size) purple_debug_error("util", "Error writing to file %s: Wrote %" "but should have written %" G_GSIZE_FORMAT "; is your disk full?\n", filename_temp, byteswritten, real_size); /* Use stat to be absolutely sure. */ if ((g_stat(filename_temp, &st) == -1) || (st.st_size != real_size)) purple_debug_error("util", "Error writing data to file %s: " "Incomplete file written; is your disk " /* Set file permissions */ if (chmod(filename_temp, S_IRUSR | S_IWUSR) == -1) purple_debug_error("util", "Error setting permissions of file %s: %s\n", filename_temp, g_strerror(errno)); /* Rename to the REAL name */ if (g_rename(filename_temp, filename_full) == -1) purple_debug_error("util", "Error renaming %s to %s: %s\n", filename_temp, filename_full, purple_util_read_xml_from_file(const char *filename, const char *description) return xmlnode_from_file(purple_user_dir(), filename, description, "util"); * Like mkstemp() but returns a file pointer, uses a pre-set template, * uses the semantics of tempnam() for the directory to use and allocates * the space for the filepath. * Caller is responsible for closing the file and removing it when done, * as well as freeing the space pointed-to by "path" with g_free(). * Returns NULL on failure and cleans up after itself if so. static const char *purple_mkstemp_templ = {"purpleXXXXXX"}; purple_mkstemp(char **fpath, gboolean binary) g_return_val_if_fail(fpath != NULL, NULL); if((tmpdir = (gchar*)g_get_tmp_dir()) != NULL) { if((*fpath = g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s", tmpdir, purple_mkstemp_templ)) != NULL) { purple_debug(PURPLE_DEBUG_ERROR, "purple_mkstemp", "Couldn't make \"%s\", error: %d\n", if((fp = fdopen(fd, "r+")) == NULL) { purple_debug(PURPLE_DEBUG_ERROR, "purple_mkstemp", "Couldn't fdopen(), error: %d\n", errno); purple_debug(PURPLE_DEBUG_ERROR, "purple_mkstemp", "g_get_tmp_dir() failed!\n"); purple_util_get_image_extension(gconstpointer data, size_t len) g_return_val_if_fail(data != NULL, NULL); g_return_val_if_fail(len > 0, NULL); if (!strncmp((char *)data, "GIF8", 4)) else if (!strncmp((char *)data, "\xff\xd8\xff", 3)) /* 4th may be e0 through ef */ else if (!strncmp((char *)data, "\x89PNG", 4)) else if (!strncmp((char *)data, "MM", 2) || !strncmp((char *)data, "II", 2)) else if (!strncmp((char *)data, "BM", 2)) * We thought about using non-cryptographic hashes like CRC32 here. * They would be faster, but we think using something more secure is * important, so that it is more difficult for someone to maliciously * replace one buddy's icon with something else. purple_util_get_image_checksum(gconstpointer image_data, size_t image_len) PurpleCipherContext *context; context = purple_cipher_context_new_by_name("sha1", NULL); purple_debug_error("util", "Could not find sha1 cipher\n"); g_return_val_if_reached(NULL); /* Hash the image data */ purple_cipher_context_append(context, image_data, image_len); if (!purple_cipher_context_digest_to_str(context, sizeof(digest), digest, NULL)) purple_debug_error("util", "Failed to get SHA-1 digest.\n"); g_return_val_if_reached(NULL); purple_cipher_context_destroy(context); purple_util_get_image_filename(gconstpointer image_data, size_t image_len) /* Return the filename */ char *checksum = purple_util_get_image_checksum(image_data, image_len); char *filename = g_strdup_printf("%s.%s", checksum, purple_util_get_image_extension(image_data, image_len)); purple_program_is_valid(const char *program) gboolean is_valid = FALSE; g_return_val_if_fail(program != NULL, FALSE); g_return_val_if_fail(*program != '\0', FALSE); if (!g_shell_parse_argv(program, NULL, &argv, &error)) { purple_debug(PURPLE_DEBUG_ERROR, "program_is_valid", "Could not parse program '%s': %s\n", program, error->message); progname = g_find_program_in_path(argv[0]); is_valid = (progname != NULL); if(purple_debug_is_verbose()) purple_debug_info("program_is_valid", "Tested program %s. %s.\n", program, is_valid ? "Valid" : "Invalid"); purple_running_gnome(void) gchar *tmp = g_find_program_in_path("gnome-open"); tmp = (gchar *)g_getenv("GNOME_DESKTOP_SESSION_ID"); return ((tmp != NULL) && (*tmp != '\0')); gchar *tmp = g_find_program_in_path("kfmclient"); session = g_getenv("KDE_FULL_SESSION"); if (purple_strequal(session, "true")) /* If you run Purple from Konsole under !KDE, this will provide a * a false positive. Since we do the GNOME checks first, this is * only a problem if you're running something !(KDE || GNOME) and * you run Purple from Konsole. This really shouldn't be a problem. */ return ((g_getenv("KDEDIR") != NULL) || g_getenv("KDEDIRS") != NULL); typedef union purple_sockaddr { struct sockaddr_in sa_in; struct sockaddr_in6 sa_in6; struct sockaddr_storage sa_stor; socklen_t namelen = sizeof(addr); g_return_val_if_fail(fd != 0, NULL); if (getsockname(fd, &(addr.sa), &namelen)) family = addr.sa.sa_family; return g_strdup(inet_ntoa(addr.sa_in.sin_addr)); #if defined(AF_INET6) && defined(HAVE_INET_NTOP) else if (family == AF_INET6) { char host[INET6_ADDRSTRLEN]; tmp = inet_ntop(family, &(addr.sa_in6.sin6_addr), host, sizeof(host)); purple_socket_get_family(int fd) socklen_t len = sizeof(addr); g_return_val_if_fail(fd >= 0, -1); if (getsockname(fd, &(addr.sa), &len)) return addr.sa.sa_family; purple_socket_speaks_ipv4(int fd) g_return_val_if_fail(fd >= 0, FALSE); family = purple_socket_get_family(fd); if (getsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &val, &len) != 0) /************************************************************************** **************************************************************************/ purple_strequal(const gchar *left, const gchar *right) #if GLIB_CHECK_VERSION(2,16,0) return (g_strcmp0(left, right) == 0); return ((left == NULL && right == NULL) || (left != NULL && right != NULL && strcmp(left, right) == 0)); purple_normalize(const PurpleAccount *account, const char *str) static char buf[BUF_LEN]; /* This should prevent a crash if purple_normalize gets called with NULL str, see #10115 */ g_return_val_if_fail(str != NULL, ""); PurplePlugin *prpl = purple_find_prpl(purple_account_get_protocol_id(account)); PurplePluginProtocolInfo *prpl_info = PURPLE_PLUGIN_PROTOCOL_INFO(prpl); if (prpl_info->normalize) ret = prpl_info->normalize(account, str); tmp = g_utf8_normalize(str, -1, G_NORMALIZE_DEFAULT); g_snprintf(buf, sizeof(buf), "%s", tmp); * You probably don't want to call this directly, it is * mainly for use as a PRPL callback function. See the purple_normalize_nocase(const PurpleAccount *account, const char *str) static char buf[BUF_LEN]; g_return_val_if_fail(str != NULL, NULL); tmp1 = g_utf8_strdown(str, -1); tmp2 = g_utf8_normalize(tmp1, -1, G_NORMALIZE_DEFAULT); g_snprintf(buf, sizeof(buf), "%s", tmp2 ? tmp2 : ""); purple_strdup_withhtml(const gchar *src) g_return_val_if_fail(src != NULL, NULL); /* New length is (length of src) + (number of \n's * 3) - (number of \r's) + 1 */ for (i = 0; src[i] != '\0'; i++) dest = g_malloc(destsize); /* Copy stuff, ignoring \r's, because they are dumb */ for (i = 0, j = 0; src[i] != '\0'; i++) { strcpy(&dest[j], "<BR>"); } else if (src[i] != '\r') purple_str_has_prefix(const char *s, const char *p) return g_str_has_prefix(s, p); purple_str_has_suffix(const char *s, const char *x) return g_str_has_suffix(s, x); purple_str_add_cr(const char *text) g_return_val_if_fail(text != NULL, NULL); for (i = 1; i < strlen(text); i++) if (text[i] == '\n' && text[i - 1] != '\r') ret = g_malloc0(strlen(text) + count + 1); for (; i < strlen(text); i++) { if (text[i] == '\n' && text[i - 1] != '\r') purple_str_strip_char(char *text, char thechar) g_return_if_fail(text != NULL); for (i = 0, j = 0; text[i]; i++) purple_util_chrreplace(char *string, char delimiter, g_return_if_fail(string != NULL); while (string[i] != '\0') if (string[i] == delimiter) purple_strreplace(const char *string, const char *delimiter, g_return_val_if_fail(string != NULL, NULL); g_return_val_if_fail(delimiter != NULL, NULL); g_return_val_if_fail(replacement != NULL, NULL); split = g_strsplit(string, delimiter, 0); ret = g_strjoinv(replacement, split); purple_strcasereplace(const char *string, const char *delimiter, int length_del, length_rep, i, j; g_return_val_if_fail(string != NULL, NULL); g_return_val_if_fail(delimiter != NULL, NULL); g_return_val_if_fail(replacement != NULL, NULL); length_del = strlen(delimiter); length_rep = strlen(replacement); /* Count how many times the delimiter appears */ i = 0; /* position in the source string */ j = 0; /* number of occurrences of "delimiter" */ while (string[i] != '\0') { if (!g_ascii_strncasecmp(&string[i], delimiter, length_del)) { i = 0; /* position in the source string */ j = 0; /* position in the destination string */ while (string[i] != '\0') { if (!g_ascii_strncasecmp(&string[i], delimiter, length_del)) { strncpy(&ret[j], replacement, length_rep); /** TODO: Expose this when we can add API */ purple_strcasestr_len(const char *haystack, gssize hlen, const char *needle, gssize nlen) g_return_val_if_fail(haystack != NULL, NULL); g_return_val_if_fail(needle != NULL, NULL); g_return_val_if_fail(hlen > 0, NULL); g_return_val_if_fail(nlen > 0, NULL); while (*tmp && !ret && (hlen - (tmp - haystack)) >= nlen) { if (!g_ascii_strncasecmp(needle, tmp, nlen)) purple_strcasestr(const char *haystack, const char *needle) return purple_strcasestr_len(haystack, -1, needle, -1); purple_str_size_to_units(size_t size) static const char * const size_str[] = { "bytes", "KiB", "MiB", "GiB" }; return g_strdup(_("Calculating...")); return g_strdup(_("Unknown.")); while ((size_index < 3) && (size_mag > 1024)) { return g_strdup_printf("%" G_GSIZE_FORMAT " %s", size, size_str[size_index]); return g_strdup_printf("%.2f %s", size_mag, size_str[size_index]); purple_str_seconds_to_string(guint secs) return g_strdup_printf(dngettext(PACKAGE, "%d second", "%d seconds", secs), secs); days = secs / (60 * 60 * 24); secs = secs % (60 * 60 * 24); ret = g_strdup_printf(dngettext(PACKAGE, "%d day", "%d days", days), days); char *tmp = g_strdup_printf( dngettext(PACKAGE, "%s, %d hour", "%s, %d hours", hrs), ret = g_strdup_printf(dngettext(PACKAGE, "%d hour", "%d hours", hrs), hrs); char *tmp = g_strdup_printf( dngettext(PACKAGE, "%s, %d minute", "%s, %d minutes", mins), ret = g_strdup_printf(dngettext(PACKAGE, "%d minute", "%d minutes", mins), mins); purple_str_binary_to_ascii(const unsigned char *binary, guint len) g_return_val_if_fail(len > 0, NULL); ret = g_string_sized_new(len); for (i = 0; i < len; i++) if (binary[i] < 32 || binary[i] > 126) g_string_append_printf(ret, "\\x%02hhx", binary[i]); else if (binary[i] == '\\') g_string_append(ret, "\\\\"); g_string_append_c(ret, binary[i]); return g_string_free(ret, FALSE); /************************************************************************** **************************************************************************/ void purple_got_protocol_handler_uri(const char *uri) const char *tmp, *param_string; GHashTable *params = NULL; if (!(tmp = strchr(uri, ':')) || tmp == uri) { purple_debug_error("util", "Malformed protocol handler message - missing protocol.\n"); len = MIN(sizeof(proto) - 1, (tmp - uri)); strncpy(proto, uri, len); if (g_str_equal(proto, "xmpp")) purple_debug_info("util", "Processing message '%s' for protocol '%s' using delimiter '%c'.\n", tmp, proto, delimiter); if ((param_string = strchr(tmp, '?'))) { const char *keyend = NULL, *pairstart; char *key, *value = NULL; cmd = g_strndup(tmp, (param_string - tmp)); params = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free); pairstart = tmp = param_string; while (*tmp || *pairstart) { if (*tmp == delimiter || !(*tmp)) { /* If there is no explicit value */ if (keyend && keyend != pairstart) { key = g_strndup(pairstart, (keyend - pairstart)); /* If there is an explicit value */ if (keyend != tmp && keyend != (tmp - 1)) value = g_strndup(keyend + 1, (tmp - keyend - 1)); *p = g_ascii_tolower(*p); g_hash_table_insert(params, key, value); pairstart = (*tmp) ? tmp + 1 : tmp; purple_signal_emit_return_1(purple_get_core(), "uri-handler", proto, cmd, params); g_hash_table_destroy(params); * TODO: Should probably add a "gboolean *ret_ishttps" parameter that * is set to TRUE if this URL is https, otherwise it is set to * FALSE. But that change will break the API. * This is important for Yahoo! web messenger login. They now * force https login, and if you access the web messenger login * page via http then it redirects you to the https version, but * purple_util_fetch_url() ignores the "https" and attempts to * fetch the URL via http again, which gets redirected again. purple_url_parse(const char *url, char **ret_host, int *ret_port, char **ret_path, char **ret_user, char **ret_passwd) gboolean is_https = FALSE; char host[256], path[256], user[256], passwd[256]; /* hyphen at end includes it in control set */ #define ADDR_CTRL "A-Za-z0-9.-" #define PAGE_CTRL "A-Za-z0-9.~_/:*!@&%%?=+^-" #define USER_CTRL "A-Za-z0-9.~_/*!&%%?=+^-" #define PASSWD_CTRL "A-Za-z0-9.~_/*!&%%?=+^-" g_return_val_if_fail(url != NULL, FALSE); if ((turl = purple_strcasestr(url, "http://")) != NULL) else if ((turl = purple_strcasestr(url, "https://")) != NULL) /* parse out authentication information if supplied */ /* Only care about @ char BEFORE the first / */ slash = strchr(url, '/'); if (at && (!slash || at < slash)) { scan_info = "%255[" USER_CTRL "]:%255[" PASSWD_CTRL "]^@"; f = sscanf(url, scan_info, user, passwd); /* No passwd, possibly just username supplied */ scan_info = "%255[" USER_CTRL "]^@"; f = sscanf(url, scan_info, user); url = at+1; /* move pointer after the @ char */ scan_info = "%255[" ADDR_CTRL "]:%5[" PORT_CTRL "]/%255[" PAGE_CTRL "]"; f = sscanf(url, scan_info, host, port_str, path); scan_info = "%255[" ADDR_CTRL "]/%255[" PAGE_CTRL "]"; f = sscanf(url, scan_info, host, path); /* Use the default port */ g_snprintf(port_str, sizeof(port_str), "443"); g_snprintf(port_str, sizeof(port_str), "80"); if (sscanf(port_str, "%d", &port) != 1) purple_debug_error("util", "Error parsing URL port from %s\n", url); if (ret_host != NULL) *ret_host = g_strdup(host); if (ret_port != NULL) *ret_port = port; if (ret_path != NULL) *ret_path = g_strdup(path); if (ret_user != NULL) *ret_user = g_strdup(user); if (ret_passwd != NULL) *ret_passwd = g_strdup(passwd); return ((*host != '\0') ? TRUE : FALSE); * The arguments to this function are similar to printf. purple_util_fetch_url_error(PurpleUtilFetchUrlData *gfud, const char *format, ...) error_message = g_strdup_vprintf(format, args); gfud->callback(gfud, gfud->user_data, NULL, 0, error_message); purple_util_fetch_url_cancel(gfud); static void url_fetch_connect_cb(gpointer url_data, gint source, const gchar *error_message); static void ssl_url_fetch_connect_cb(gpointer data, PurpleSslConnection *ssl_connection, PurpleInputCondition cond); static void ssl_url_fetch_error_cb(PurpleSslConnection *ssl_connection, PurpleSslErrorType error, gpointer data); parse_redirect(const char *data, gsize data_len, PurpleUtilFetchUrlData *gfud) gchar *new_url, *temp_url, *end; if ((s = g_strstr_len(data, data_len, "\nLocation: ")) == NULL) /* We're not being redirected */ s += strlen("Location: "); new_url = g_malloc(len + 1); strncpy(new_url, s, len); if (*new_url == '/' || g_strstr_len(new_url, len, "://") == NULL) new_url = g_strdup_printf("%s:%d%s", gfud->website.address, gfud->website.port, temp_url); purple_debug_info("util", "Redirecting to %s\n", new_url); gfud->num_times_redirected++; if (gfud->num_times_redirected >= 5) purple_util_fetch_url_error(gfud, _("Could not open %s: Redirected too many times"), * Try again, with this new location. This code is somewhat * ugly, but we need to reuse the gfud because whoever called * us is holding a reference to it. purple_ssl_close(gfud->ssl_connection); gfud->ssl_connection = NULL; purple_input_remove(gfud->inpa); gfud->request_written = 0; g_free(gfud->website.user); g_free(gfud->website.passwd); g_free(gfud->website.address); g_free(gfud->website.page); purple_url_parse(new_url, &gfud->website.address, &gfud->website.port, &gfud->website.page, &gfud->website.user, &gfud->website.passwd); if (purple_strcasestr(new_url, "https://") != NULL) { gfud->ssl_connection = purple_ssl_connect(gfud->account, gfud->website.address, gfud->website.port, ssl_url_fetch_connect_cb, ssl_url_fetch_error_cb, gfud); gfud->connect_data = purple_proxy_connect(NULL, gfud->account, gfud->website.address, gfud->website.port, url_fetch_connect_cb, gfud); if (gfud->ssl_connection == NULL && gfud->connect_data == NULL) purple_util_fetch_url_error(gfud, _("Unable to connect to %s"), /* find the starting point of the content for the specified header and make * sure that the content is safe to pass to sscanf */ find_header_content(const char *data, gsize data_len, const char *header) gsize header_len = strlen(header); if (data_len > header_len) { /* Check if the first header matches (data won't start with a \n") */ p = (g_ascii_strncasecmp(data, header + 1, header_len - 1) == 0) ? data : NULL; p = purple_strcasestr_len(data, data_len, header, header_len); /* If we can find the header at all, try to sscanf it. * Response headers should end with at least \r\n, so sscanf is safe, * if we make sure that there is indeed a \n in our header. if (p && g_strstr_len(p, data_len - (p - data), "\n")) { parse_content_len(const char *data, gsize data_len) p = find_header_content(data, data_len, "\nContent-Length: "); sscanf(p, "%" G_GSIZE_FORMAT, &content_len); purple_debug_misc("util", "parsed %" G_GSIZE_FORMAT "\n", content_len); content_is_chunked(const char *data, gsize data_len) const char *p = find_header_content(data, data_len, "\nTransfer-Encoding: "); if (p && g_ascii_strncasecmp(p, "chunked", 7) == 0) process_chunked_data(char *data, gsize *len) /* Read the size of this chunk */ if (sscanf(s, "%" G_GSIZE_MODIFIER "x", &sz) != 1) purple_debug_error("util", "Error processing chunked data: " "Expected data length, found: %s\n", s); /* We've reached the last chunk */ * TODO: The spec allows "footers" to follow the last chunk. * If there is more data after this line then we should * treat it like a header. /* Advance to the start of the data */ if (sz > MAX_HTTP_CHUNK_SIZE || s + sz > data + *len) { purple_debug_error("util", "Error processing chunked data: " "Chunk size %" G_GSIZE_FORMAT " bytes was longer " "than the data remaining in the buffer (%" G_GSIZE_FORMAT " bytes)\n", sz, data + *len - s); /* Move all data overtop of the chunk length that we read in earlier */ if (*s == '\0' || (*s != '\r' && *(s + 1) != '\n')) { purple_debug_error("util", "Error processing chunked data: " "Expected \\r\\n, found: %s\n", s); /* NULL terminate the data */ url_fetch_recv_cb(gpointer url_data, gint source, PurpleInputCondition cond) PurpleUtilFetchUrlData *gfud = url_data; gboolean got_eof = FALSE; * Read data in a loop until we can't read any more! This is a * little confusing because we read using a different function * depending on whether the socket is ssl or cleartext. while ((gfud->is_ssl && ((len = purple_ssl_read(gfud->ssl_connection, buf, sizeof(buf))) > 0)) || (!gfud->is_ssl && (len = read(source, buf, sizeof(buf))) > 0)) if((gfud->len + len) > gfud->max_len) { purple_util_fetch_url_error(gfud, _("Error reading from %s: response too long (%d bytes limit)"), gfud->website.address, gfud->max_len); /* If we've filled up our buffer, make it bigger */ if((gfud->len + len) >= gfud->data_len) { while((gfud->len + len) >= gfud->data_len) gfud->data_len += sizeof(buf); gfud->webdata = g_realloc(gfud->webdata, gfud->data_len); data_cursor = gfud->webdata + gfud->len; memcpy(data_cursor, buf, len); gfud->webdata[gfud->len] = '\0'; /* See if we've reached the end of the headers yet */ end_of_headers = strstr(gfud->webdata, "\r\n\r\n"); guint header_len = (end_of_headers + 4 - gfud->webdata); purple_debug_misc("util", "Response headers: '%.*s'\n", header_len, gfud->webdata); /* See if we can find a redirect. */ if(parse_redirect(gfud->webdata, header_len, gfud)) gfud->got_headers = TRUE; /* No redirect. See if we can find a content length. */ content_len = parse_content_len(gfud->webdata, header_len); gfud->chunked = content_is_chunked(gfud->webdata, header_len); /* We'll stick with an initial 8192 */ gfud->has_explicit_data_len = TRUE; if (content_len > gfud->max_len) { purple_debug_error("util", "Overriding explicit Content-Length of %" G_GSIZE_FORMAT " with max of %" G_GSSIZE_FORMAT "\n", content_len, gfud->max_len); content_len = gfud->max_len; /* If we're returning the headers too, we don't need to clean them out */ if (gfud->include_headers) { gfud->data_len = content_len + header_len; new_data = g_try_realloc(gfud->webdata, gfud->data_len); purple_debug_error("util", "Failed to allocate %" G_GSIZE_FORMAT " bytes: %s\n", content_len, g_strerror(errno)); purple_util_fetch_url_error(gfud, _("Unable to allocate enough memory to hold " "the contents from %s. The web server may " "be trying something malicious."), gfud->webdata = new_data; gsize body_len = gfud->len - header_len; content_len = MAX(content_len, body_len); new_data = g_try_malloc(content_len); purple_debug_error("util", "Failed to allocate %" G_GSIZE_FORMAT " bytes: %s\n", content_len, g_strerror(errno)); purple_util_fetch_url_error(gfud, _("Unable to allocate enough memory to hold " "the contents from %s. The web server may " "be trying something malicious."), /* We may have read part of the body when reading the headers, don't lose it */ memcpy(new_data, end_of_headers + 4, body_len); /* Out with the old... */ gfud->data_len = content_len; gfud->webdata = new_data; if(gfud->has_explicit_data_len && gfud->len >= gfud->data_len) { purple_util_fetch_url_error(gfud, _("Error reading from %s: %s"), gfud->website.address, g_strerror(errno)); if((len == 0) || got_eof) { gfud->webdata = g_realloc(gfud->webdata, gfud->len + 1); gfud->webdata[gfud->len] = '\0'; if (!gfud->include_headers && gfud->chunked) { /* Process only if we don't want the headers. */ process_chunked_data(gfud->webdata, &gfud->len); gfud->callback(gfud, gfud->user_data, gfud->webdata, gfud->len, NULL); purple_util_fetch_url_cancel(gfud); static void ssl_url_fetch_recv_cb(gpointer data, PurpleSslConnection *ssl_connection, PurpleInputCondition cond) url_fetch_recv_cb(data, -1, cond); * This function is called when the socket is available to be written * @param source The file descriptor that can be written to. This can * be an http connection or it can be the SSL connection of an * https request. So be careful what you use it for! If it's * an https request then use purple_ssl_write() instead of * writing to it directly. url_fetch_send_cb(gpointer data, gint source, PurpleInputCondition cond) PurpleUtilFetchUrlData *gfud; if (gfud->request == NULL) { PurpleProxyInfo *gpi = purple_proxy_get_setup(gfud->account); GString *request_str = g_string_new(NULL); g_string_append_printf(request_str, "GET %s%s HTTP/%s\r\n" (gfud->full ? (gfud->url ? gfud->url : "") : (gfud->website.page ? gfud->website.page : "")), (gfud->http11 ? "1.1" : "1.0")); g_string_append_printf(request_str, "User-Agent: %s\r\n", gfud->user_agent); /* Host header is not forbidden in HTTP/1.0 requests, and HTTP/1.1 * clients must know how to handle the "chunked" transfer encoding. * Purple doesn't know how to handle "chunked", so should always send * the Host header regardless, to get around some observed problems g_string_append_printf(request_str, "Accept: */*\r\n" (gfud->website.address ? gfud->website.address : "")); if (purple_proxy_info_get_username(gpi) != NULL && (purple_proxy_info_get_type(gpi) == PURPLE_PROXY_USE_ENVVAR || purple_proxy_info_get_type(gpi) == PURPLE_PROXY_HTTP)) { /* This chunk of code was copied from proxy.c http_start_connect_tunneling() * This is really a temporary hack - we need a more complete proxy handling solution, * so I didn't think it was worthwhile to refactor for reuse char *t1, *t2, *ntlm_type1; ret = gethostname(hostname, sizeof(hostname)); hostname[sizeof(hostname) - 1] = '\0'; if (ret < 0 || hostname[0] == '\0') { purple_debug_warning("util", "proxy - gethostname() failed -- is your hostname set?"); strcpy(hostname, "localhost"); t1 = g_strdup_printf("%s:%s", purple_proxy_info_get_username(gpi), purple_proxy_info_get_password(gpi) ? purple_proxy_info_get_password(gpi) : ""); t2 = purple_base64_encode((const guchar *)t1, strlen(t1)); ntlm_type1 = purple_ntlm_gen_type1(hostname, ""); g_string_append_printf(request_str, "Proxy-Authorization: Basic %s\r\n" "Proxy-Authorization: NTLM %s\r\n" "Proxy-Connection: Keep-Alive\r\n", g_string_append(request_str, "\r\n"); gfud->request = g_string_free(request_str, FALSE); if(purple_debug_is_unsafe()) purple_debug_misc("util", "Request: '%s'\n", gfud->request); purple_debug_misc("util", "request constructed\n"); total_len = strlen(gfud->request); len = purple_ssl_write(gfud->ssl_connection, gfud->request + gfud->request_written, total_len - gfud->request_written); len = write(gfud->fd, gfud->request + gfud->request_written, total_len - gfud->request_written); if (len < 0 && errno == EAGAIN) purple_util_fetch_url_error(gfud, _("Error writing to %s: %s"), gfud->website.address, g_strerror(errno)); gfud->request_written += len; if (gfud->request_written < total_len) /* We're done writing our request, now start reading the response */ purple_input_remove(gfud->inpa); purple_ssl_input_add(gfud->ssl_connection, ssl_url_fetch_recv_cb, gfud); purple_input_remove(gfud->inpa); gfud->inpa = purple_input_add(gfud->fd, PURPLE_INPUT_READ, url_fetch_recv_cb, url_fetch_connect_cb(gpointer url_data, gint source, const gchar *error_message) PurpleUtilFetchUrlData *gfud; gfud->connect_data = NULL; purple_util_fetch_url_error(gfud, _("Unable to connect to %s: %s"), (gfud->website.address ? gfud->website.address : ""), error_message); gfud->inpa = purple_input_add(source, PURPLE_INPUT_WRITE, url_fetch_send_cb, gfud); url_fetch_send_cb(gfud, source, PURPLE_INPUT_WRITE); static void ssl_url_fetch_connect_cb(gpointer data, PurpleSslConnection *ssl_connection, PurpleInputCondition cond) PurpleUtilFetchUrlData *gfud; gfud->inpa = purple_input_add(ssl_connection->fd, PURPLE_INPUT_WRITE, url_fetch_send_cb, gfud); url_fetch_send_cb(gfud, ssl_connection->fd, PURPLE_INPUT_WRITE); static void ssl_url_fetch_error_cb(PurpleSslConnection *ssl_connection, PurpleSslErrorType error, gpointer data) PurpleUtilFetchUrlData *gfud; gfud->ssl_connection = NULL; purple_util_fetch_url_error(gfud, _("Unable to connect to %s: %s"), (gfud->website.address ? gfud->website.address : ""), purple_ssl_strerror(error)); purple_util_fetch_url_request(const char *url, gboolean full, const char *user_agent, gboolean http11, const char *request, gboolean include_headers, PurpleUtilFetchUrlCallback callback, void *user_data) return purple_util_fetch_url_request_len_with_account(NULL, url, full, request, include_headers, -1, purple_util_fetch_url_request_len(const char *url, gboolean full, const char *user_agent, gboolean http11, const char *request, gboolean include_headers, gssize max_len, PurpleUtilFetchUrlCallback callback, void *user_data) return purple_util_fetch_url_request_len_with_account(NULL, url, full, user_agent, http11, request, include_headers, max_len, callback, purple_util_fetch_url_request_len_with_account(PurpleAccount *account, const char *url, gboolean full, const char *user_agent, gboolean http11, const char *request, gboolean include_headers, gssize max_len, PurpleUtilFetchUrlCallback callback, void *user_data) PurpleUtilFetchUrlData *gfud; g_return_val_if_fail(url != NULL, NULL); g_return_val_if_fail(callback != NULL, NULL); if(purple_debug_is_unsafe()) purple_debug_info("util", "requested to fetch (%s), full=%d, user_agent=(%s), http11=%d\n", url, full, user_agent?user_agent:"(null)", http11); purple_debug_info("util", "requesting to fetch a URL\n"); gfud = g_new0(PurpleUtilFetchUrlData, 1); gfud->callback = callback; gfud->user_data = user_data; gfud->url = g_strdup(url); gfud->user_agent = g_strdup(user_agent); gfud->request = g_strdup(request); gfud->include_headers = include_headers; max_len = DEFAULT_MAX_HTTP_DOWNLOAD; purple_debug_error("util", "Defaulting max download from %s to %" G_GSSIZE_FORMAT "\n", url, max_len); gfud->max_len = (gsize) max_len; purple_url_parse(url, &gfud->website.address, &gfud->website.port, &gfud->website.page, &gfud->website.user, &gfud->website.passwd); if (purple_strcasestr(url, "https://") != NULL) { if (!purple_ssl_is_supported()) { purple_util_fetch_url_error(gfud, _("Unable to connect to %s: %s"), _("Server requires TLS/SSL, but no TLS/SSL support was found.")); gfud->ssl_connection = purple_ssl_connect(account, gfud->website.address, gfud->website.port, ssl_url_fetch_connect_cb, ssl_url_fetch_error_cb, gfud); gfud->connect_data = purple_proxy_connect(NULL, account, gfud->website.address, gfud->website.port, url_fetch_connect_cb, gfud); if (gfud->ssl_connection == NULL && gfud->connect_data == NULL) purple_util_fetch_url_error(gfud, _("Unable to connect to %s"), purple_util_fetch_url_cancel(PurpleUtilFetchUrlData *gfud) if (gfud->ssl_connection != NULL) purple_ssl_close(gfud->ssl_connection); if (gfud->connect_data != NULL) purple_proxy_connect_cancel(gfud->connect_data); purple_input_remove(gfud->inpa); g_free(gfud->website.user); g_free(gfud->website.passwd); g_free(gfud->website.address); g_free(gfud->website.page); g_free(gfud->user_agent); purple_url_decode(const char *str) static char buf[BUF_LEN]; g_return_val_if_fail(str != NULL, NULL); * XXX - This check could be removed and buf could be made * dynamically allocated, but this is easier. if (strlen(str) >= BUF_LEN) for (i = 0; i < strlen(str); i++) { strncpy(hex, str + ++i, 2); /* i is pointing to the start of the number */ * Now it's at the end and at the start of the for loop * will be at the next character. buf[j++] = strtol(hex, NULL, 16); if (!g_utf8_validate(buf, -1, (const char **)&bum)) purple_url_encode(const char *str) static char buf[BUF_LEN]; g_return_val_if_fail(str != NULL, NULL); g_return_val_if_fail(g_utf8_validate(str, -1, NULL), NULL); for (; *iter && j < (BUF_LEN - 1) ; iter = g_utf8_next_char(iter)) { gunichar c = g_utf8_get_char(iter); /* If the character is an ASCII character and is alphanumeric if (c < 128 && (isalnum(c) || c == '-' || c == '.' || c == '_' || c == '~')) { int bytes = g_unichar_to_utf8(c, utf_char); for (i = 0; i < bytes; i++) { sprintf(buf + j, "%%%02X", utf_char[i] & 0xff); /* Originally lifted from * http://www.oreillynet.com/pub/a/network/excerpt/spcookbook_chap03/index3.html * ... and slightly modified to be a bit more rfc822 compliant * ... and modified a bit more to make domain checking rfc1035 compliant * with the exception permitted in rfc1101 for domains to start with digit * but not completely checking to avoid conflicts with IP addresses purple_email_is_valid(const char *address) static char *rfc822_specials = "()<>@,;:\\\"[]"; g_return_val_if_fail(address != NULL, FALSE); if (*address == '.') return FALSE; /* first we validate the name portion (name@domain) (rfc822)*/ for (c = address; *c; c++) { if (*c == '\"' && (c == address || *(c - 1) == '.' || *(c - 1) == '\"')) { if (*c++ && *c < 127 && *c != '\n' && *c != '\r') continue; if (*c < ' ' || *c >= 127) return FALSE; if (*c != '.') return FALSE; if (*c <= ' ' || *c >= 127) return FALSE; if (strchr(rfc822_specials, *c)) return FALSE; /* It's obviously not an email address if we didn't find an '@' above */ if (*c == '\0') return FALSE; /* strictly we should return false if (*(c - 1) == '.') too, but I think * we should permit user.@domain type addresses - they do work :) */ if (c == address) return FALSE; /* next we validate the domain portion (name@domain) (rfc1035 & rfc1011) */ if (!*(domain = ++c)) return FALSE; if (*c == '.' && (c == domain || *(c - 1) == '.' || *(c - 1) == '-')) if (*c == '-' && (*(c - 1) == '.' || *(c - 1) == '@')) return FALSE; if ((*c < '0' && *c != '-' && *c != '.') || (*c > '9' && *c < 'A') || (*c > 'Z' && *c < 'a') || (*c > 'z')) return FALSE; if (*(c - 1) == '-') return FALSE; return ((c - domain) > 3 ? TRUE : FALSE); purple_ipv4_address_is_valid(const char *ip) g_return_val_if_fail(ip != NULL, FALSE); c = sscanf(ip, "%d.%d.%d.%d%c", &o1, &o2, &o3, &o4, &end); if (c != 4 || o1 < 0 || o1 > 255 || o2 < 0 || o2 > 255 || o3 < 0 || o3 > 255 || o4 < 0 || o4 > 255) purple_ipv6_address_is_valid(const gchar *ip) gboolean double_colon = FALSE; g_return_val_if_fail(ip != NULL, FALSE); if ((*c >= '0' && *c <= '9') || (*c >= 'a' && *c <= 'f') || (*c >= 'A' && *c <= 'F')) { /* Only four hex digits per chunk */ /* The start of a new chunk */ * '::' indicates a consecutive series of chunks full * of zeroes. There can be only one of these per address. * Either we saw a '::' and there were fewer than 8 chunks -or- * we didn't see a '::' and saw exactly 8 chunks. return (double_colon && chunks < 8) || (!double_colon && chunks == 8); /* TODO 3.0.0: Add ipv6 check, too */ purple_ip_address_is_valid(const char *ip) return purple_ipv4_address_is_valid(ip); /* Stolen from gnome_uri_list_extract_uris */ purple_uri_list_extract_uris(const gchar *uri_list) g_return_val_if_fail (uri_list != NULL, NULL); /* We don't actually try to validate the URI according to RFC * 2396, or even check for allowed characters - we just ignore * comments and trim whitespace off the ends. We also * allow LF delimination as well as the specified CRLF. while (*q && (*q != '\n') && (*q != '\r')) while (q > p && isspace(*q)) retval = (gchar*)g_malloc (q - p + 2); strncpy (retval, p, q - p + 1); retval[q - p + 1] = '\0'; result = g_list_prepend (result, retval); return g_list_reverse (result); /* Stolen from gnome_uri_list_extract_filenames */ purple_uri_list_extract_filenames(const gchar *uri_list) GList *tmp_list, *node, *result; g_return_val_if_fail (uri_list != NULL, NULL); result = purple_uri_list_extract_uris(uri_list); gchar *s = (gchar*)tmp_list->data; tmp_list = tmp_list->next; if (!strncmp (s, "file:", 5)) { node->data = g_filename_from_uri (s, NULL, NULL); /* not sure if this fallback is useful at all */ if (!node->data) node->data = g_strdup (s+5); result = g_list_delete_link(result, node); /************************************************************************** **************************************************************************/ purple_utf8_try_convert(const char *str) g_return_val_if_fail(str != NULL, NULL); if (g_utf8_validate(str, -1, NULL)) { utf8 = g_locale_to_utf8(str, -1, &converted, NULL, NULL); utf8 = g_convert(str, -1, "UTF-8", "ISO-8859-15", &converted, NULL, NULL); if ((utf8 != NULL) && (converted == strlen(str))) #define utf8_first(x) ((x & 0x80) == 0 || (x & 0xe0) == 0xc0 \ || (x & 0xf0) == 0xe0 || (x & 0xf8) == 0xf0) purple_utf8_salvage(const char *str) g_return_val_if_fail(str != NULL, NULL); workstr = g_string_sized_new(strlen(str)); g_utf8_validate(str, -1, &end); workstr = g_string_append_len(workstr, str, end - str); workstr = g_string_append_c(workstr, '?'); } while (!utf8_first(*str)); return g_string_free(workstr, FALSE); purple_utf8_strip_unprintables(const gchar *str) if (!g_utf8_validate(str, -1, &bad)) { purple_debug_error("util", "purple_utf8_strip_unprintables(%s) failed; " "first bad character was %02x (%c)\n", g_return_val_if_reached(NULL); workstr = iter = g_new(gchar, strlen(str) + 1); gunichar ch = g_utf8_get_char(str); gchar *next = g_utf8_next_char(str); * Char ::= #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | if ((ch == '\t' || ch == '\n' || ch == '\r') || (ch >= 0x20 && ch <= 0xD7FF) || (ch >= 0xE000 && ch <= 0xFFFD) || (ch >= 0x10000 && ch <= 0x10FFFF)) { memcpy(iter, str, next - str); /* nul-terminate the new string */ * This function is copied from g_strerror() but changed to use purple_gai_strerror(gint errnum) static GStaticPrivate msg_private = G_STATIC_PRIVATE_INIT; msg_locale = gai_strerror(errnum); /* This string is already UTF-8--great! */ gchar *msg_utf8 = g_locale_to_utf8(msg_locale, -1, NULL, NULL, NULL); /* Stick in the quark table so that we can return a static result */ GQuark msg_quark = g_quark_from_string(msg_utf8); msg_utf8 = (gchar *)g_quark_to_string(msg_quark); msg = g_static_private_get(&msg_private); g_static_private_set(&msg_private, msg, g_free); sprintf(msg, "unknown error (%d)", errnum); purple_utf8_ncr_encode(const char *str) g_return_val_if_fail(str != NULL, NULL); g_return_val_if_fail(g_utf8_validate(str, -1, NULL), NULL); for(; *str; str = g_utf8_next_char(str)) { gunichar wc = g_utf8_get_char(str); /* super simple check. hopefully not too wrong. */ g_string_append_printf(out, "&#%u;", (guint32) wc); g_string_append_unichar(out, wc); return g_string_free(out, FALSE); purple_utf8_ncr_decode(const char *str) g_return_val_if_fail(str != NULL, NULL); g_return_val_if_fail(g_utf8_validate(str, -1, NULL), NULL); while( (b = strstr(buf, "&#")) ) { /* append everything leading up to the &# */ g_string_append_len(out, buf, b-buf); b += 2; /* skip past the &# */ /* strtoul will treat 0x prefix as hex, but not just x */ if(*b == 'x' || *b == 'X') { /* advances buf to the end of the ncr segment */ wc = (gunichar) strtoul(b, &buf, base); /* this mimics the previous impl of ncr_decode */ g_string_append_unichar(out, wc); /* append whatever's left */ g_string_append(out, buf); return g_string_free(out, FALSE); purple_utf8_strcasecmp(const char *a, const char *b) if(!g_utf8_validate(a, -1, NULL) || !g_utf8_validate(b, -1, NULL)) purple_debug_error("purple_utf8_strcasecmp", "One or both parameters are invalid UTF8\n"); a_norm = g_utf8_casefold(a, -1); b_norm = g_utf8_casefold(b, -1); ret = g_utf8_collate(a_norm, b_norm); /* previously conversation::find_nick() */ purple_utf8_has_word(const char *haystack, const char *needle) const char *start, *prev_char; start = hay = g_utf8_strdown(haystack, -1); pin = g_utf8_strdown(needle, -1); while ((p = strstr(start, pin)) != NULL) { prev_char = g_utf8_find_prev_char(hay, p); before = g_utf8_get_char(prev_char); after = g_utf8_get_char_validated(p + n, - 1); /* The character before is a reasonable guess for a word boundary ("!g_unichar_isalnum()" is not a valid way to determine word boundaries, but it is the only reasonable thing to do here), and isn't the '&' from a "&" or some such entity*/ (before != -2 && !g_unichar_isalnum(before) && *(p - 1) != '&')) && after != -2 && !g_unichar_isalnum(after)) { purple_print_utf8_to_console(FILE *filestream, char *message) /* Try to convert 'message' to user's locale */ message_conv = g_locale_from_utf8(message, -1, NULL, NULL, &error); if (message_conv != NULL) { fputs(message_conv, filestream); /* use 'message' as a fallback */ g_warning("%s\n", error->message); fputs(message, filestream); gboolean purple_message_meify(char *message, gssize len) gboolean inside_html = FALSE; g_return_val_if_fail(message != NULL, FALSE); for (c = message; *c; c++, len--) { if(*c && !g_ascii_strncasecmp(c, "/me ", 4)) { char *purple_text_strip_mnemonic(const char *in) g_return_val_if_fail(in != NULL, NULL); out = g_malloc(strlen(in)+1); a0 = a; /* The last non-space char seen so far, or the first char */ if(a > out && b > in && *(b-1) == '(' && *(b+1) && !(*(b+1) & 0x80) && *(b+2) == ')') { /* Detected CJK style shortcut (Bug 875311) */ a = a0; /* undo the left parenthesis */ b += 3; /* and skip the whole mess */ } else if(*(b+1) == '_') { /* We don't want to corrupt the middle of UTF-8 characters */ } else if (!(*b & 0x80)) { /* other 1-byte char */ /* Multibyte utf8 char, don't look for _ inside these */ if ((*b & 0xe0) == 0xc0) { } else if ((*b & 0xf0) == 0xe0) { } else if ((*b & 0xf8) == 0xf0) { } else if ((*b & 0xfc) == 0xf8) { } else if ((*b & 0xfe) == 0xfc) { } else { /* Illegal utf8 */ a0 = a; /* unless we want to delete CJK spaces too */ for (i = 0; i < n && *b; i += 1) { const char* purple_unescape_filename(const char *escaped) { return purple_url_decode(escaped); /* this is almost identical to purple_url_encode (hence purple_url_decode * being used above), but we want to keep certain characters unescaped purple_escape_filename(const char *str) static char buf[BUF_LEN]; g_return_val_if_fail(str != NULL, NULL); g_return_val_if_fail(g_utf8_validate(str, -1, NULL), NULL); for (; *iter && j < (BUF_LEN - 1) ; iter = g_utf8_next_char(iter)) { gunichar c = g_utf8_get_char(iter); /* If the character is an ASCII character and is alphanumeric, * or one of the specified values, no need to escape */ if (c < 128 && (g_ascii_isalnum(c) || c == '@' || c == '-' || c == '_' || c == '.' || c == '#')) { int bytes = g_unichar_to_utf8(c, utf_char); for (i = 0; i < bytes; i++) { sprintf(buf + j, "%%%02x", utf_char[i] & 0xff); /* File/Directory names in windows cannot end in periods/spaces. * http://msdn.microsoft.com/en-us/library/aa365247%28VS.85%29.aspx while (j > 0 && (buf[j - 1] == '.' || buf[j - 1] == ' ')) const char *_purple_oscar_convert(const char *act, const char *protocol) if (act && purple_strequal(protocol, "prpl-oscar")) { for (i = 0; act[i] != '\0'; i++) void purple_restore_default_signal_handlers(void) signal(SIGHUP, SIG_DFL); /* 1: terminal line hangup */ signal(SIGINT, SIG_DFL); /* 2: interrupt program */ signal(SIGQUIT, SIG_DFL); /* 3: quit program */ signal(SIGILL, SIG_DFL); /* 4: illegal instruction (not reset when caught) */ signal(SIGTRAP, SIG_DFL); /* 5: trace trap (not reset when caught) */ signal(SIGABRT, SIG_DFL); /* 6: abort program */ signal(SIGPOLL, SIG_DFL); /* 7: pollable event (POSIX) */ signal(SIGEMT, SIG_DFL); /* 7: EMT instruction (Non-POSIX) */ signal(SIGFPE, SIG_DFL); /* 8: floating point exception */ signal(SIGBUS, SIG_DFL); /* 10: bus error */ signal(SIGSEGV, SIG_DFL); /* 11: segmentation violation */ signal(SIGSYS, SIG_DFL); /* 12: bad argument to system call */ signal(SIGPIPE, SIG_DFL); /* 13: write on a pipe with no reader */ signal(SIGALRM, SIG_DFL); /* 14: real-time timer expired */ signal(SIGTERM, SIG_DFL); /* 15: software termination signal */ signal(SIGCHLD, SIG_DFL); /* 20: child status has changed */ signal(SIGXCPU, SIG_DFL); /* 24: exceeded CPU time limit */ signal(SIGXFSZ, SIG_DFL); /* 25: exceeded file size limit */ #endif /* HAVE_SIGNAL_H */ set_status_with_attrs(PurpleStatus *status, ...) purple_status_set_active_with_attrs(status, TRUE, args); void purple_util_set_current_song(const char *title, const char *artist, const char *album) GList *list = purple_accounts_get_all(); for (; list; list = list->next) { PurplePresence *presence; PurpleAccount *account = list->data; if (!purple_account_get_enabled(account, purple_core_get_ui())) presence = purple_account_get_presence(account); tune = purple_presence_get_status(presence, "tune"); set_status_with_attrs(tune, PURPLE_TUNE_TITLE, title, PURPLE_TUNE_ARTIST, artist, PURPLE_TUNE_ALBUM, album, purple_status_set_active(tune, FALSE); char * purple_util_format_song_info(const char *title, const char *artist, const char *album, gpointer unused) esc = g_markup_escape_text(title, -1); string = g_string_new(""); g_string_append_printf(string, "%s", esc); esc = g_markup_escape_text(artist, -1); g_string_append_printf(string, _(" - %s"), esc); esc = g_markup_escape_text(album, -1); g_string_append_printf(string, _(" (%s)"), esc); return g_string_free(string, FALSE); purple_get_host_name(void) return g_get_host_name(); a = 0x4000 | (tmp & 0xFFF); /* 0x4000 to 0x4FFF */ b = ((1 << 3) << 12) | (tmp & 0x3FFF); /* 0x8000 to 0xBFFF */ return g_strdup_printf("%08x-%04x-%04x-%04x-%04x%08x", (tmp >> 16) & 0xFFFF, g_random_int());