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-rw-r--r--camel/camel-search-private.c478
1 files changed, 0 insertions, 478 deletions
diff --git a/camel/camel-search-private.c b/camel/camel-search-private.c
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index be90e69d99..0000000000
--- a/camel/camel-search-private.c
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-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/*
- * Authors: Jeffrey Stedfast <fejj@ximian.com>
- * Michael Zucchi <NotZed@Ximian.com>
- *
- * Copyright 2000 Ximian, Inc. (www.ximian.com)
- * Copyright 2001 Ximian Inc. (www.ximian.com)
- *
- * 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., 59 Temple Street #330, Boston, MA 02111-1307, USA.
- *
- */
-
-/* (from glibc headers:
- POSIX says that <sys/types.h> must be included (by the caller) before <regex.h>. */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <sys/types.h>
-#include <regex.h>
-#include <string.h>
-#include <ctype.h>
-#include <stdio.h>
-
-#include "camel-exception.h"
-#include "camel-mime-message.h"
-#include "camel-multipart.h"
-#include "camel-stream-mem.h"
-#include "e-util/e-sexp.h"
-
-#include "camel-search-private.h"
-
-#include <gal/unicode/gunicode.h>
-
-#define d(x)
-
-/* builds the regex into pattern */
-/* taken from camel-folder-search, with added isregex & exception parameter */
-/* Basically, we build a new regex, either based on subset regex's, or substrings,
- that can be executed once over the whoel body, to match anything suitable.
- This is more efficient than multiple searches, and probably most (naive) strstr
- implementations, over long content.
-
- A small issue is that case-insenstivity wont work entirely correct for utf8 strings. */
-int
-camel_search_build_match_regex (regex_t *pattern, camel_search_flags_t type, int argc,
- struct _ESExpResult **argv, CamelException *ex)
-{
- GString *match = g_string_new("");
- int c, i, count=0, err;
- char *word;
- int flags;
-
- /* build a regex pattern we can use to match the words, we OR them together */
- if (argc>1)
- g_string_append_c (match, '(');
- for (i = 0; i < argc; i++) {
- if (argv[i]->type == ESEXP_RES_STRING) {
- if (count > 0)
- g_string_append_c (match, '|');
-
- word = argv[i]->value.string;
- if (type & CAMEL_SEARCH_MATCH_REGEX) {
- /* no need to escape because this should already be a valid regex */
- g_string_append (match, word);
- } else {
- /* escape any special chars (not sure if this list is complete) */
- if (type & CAMEL_SEARCH_MATCH_START)
- g_string_append_c (match, '^');
- while ((c = *word++)) {
- if (strchr ("*\\.()[]^$+", c) != NULL) {
- g_string_append_c (match, '\\');
- }
- g_string_append_c (match, c);
- }
- if (type & CAMEL_SEARCH_MATCH_END)
- g_string_append_c (match, '^');
- }
- count++;
- } else {
- g_warning("Invalid type passed to body-contains match function");
- }
- }
- if (argc > 1)
- g_string_append_c (match, ')');
- flags = REG_EXTENDED|REG_NOSUB;
- if (type & CAMEL_SEARCH_MATCH_ICASE)
- flags |= REG_ICASE;
- err = regcomp (pattern, match->str, flags);
- if (err != 0) {
- /* regerror gets called twice to get the full error string
- length to do proper posix error reporting */
- int len = regerror (err, pattern, 0, 0);
- char *buffer = g_malloc0 (len + 1);
-
- regerror (err, pattern, buffer, len);
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Regular expression compilation failed: %s: %s"),
- match->str, buffer);
-
- regfree (pattern);
- }
- d(printf("Built regex: '%s'\n", match->str));
- g_string_free (match, TRUE);
-
- return err;
-}
-
-static unsigned char soundex_table[256] = {
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 49, 50, 51, 0, 49, 50, 0, 0, 50, 50, 52, 53, 53, 0,
- 49, 50, 54, 50, 51, 0, 49, 0, 50, 0, 50, 0, 0, 0, 0, 0,
- 0, 0, 49, 50, 51, 0, 49, 50, 0, 0, 50, 50, 52, 53, 53, 0,
- 49, 50, 54, 50, 51, 0, 49, 0, 50, 0, 50, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-};
-
-static void
-soundexify (const gchar *sound, gchar code[5])
-{
- guchar *c, last = '\0';
- gint n;
-
- for (c = (guchar *) sound; *c && !isalpha (*c); c++);
- code[0] = toupper (*c);
- memset (code + 1, '0', 3);
- for (n = 1; *c && n < 5; c++) {
- guchar ch = soundex_table[*c];
-
- if (ch && ch != last) {
- code[n++] = ch;
- last = ch;
- }
- }
- code[4] = '\0';
-}
-
-static gboolean
-header_soundex (const char *header, const char *match)
-{
- char mcode[5], hcode[5];
- const char *p;
- char c;
- GString *word;
- int truth = FALSE;
-
- soundexify (match, mcode);
-
- /* split the header into words, and soundexify and compare each one */
- /* FIXME: Should this convert to utf8, and split based on that, and what not?
- soundex only makes sense for us-ascii though ... */
-
- word = g_string_new("");
- p = header;
- do {
- c = *p++;
- if (c == 0 || isspace (c)) {
- if (word->len > 0) {
- soundexify (word->str, hcode);
- if (strcmp (hcode, mcode) == 0)
- truth = TRUE;
- }
- g_string_truncate (word, 0);
- } else if (isalpha (c))
- g_string_append_c (word, c);
- } while (c && !truth);
- g_string_free (word, TRUE);
-
- return truth;
-}
-
-static gunichar
-utf8_get (const char **inp)
-{
- const unsigned char *p = *inp;
- gunichar c;
-
- g_return_val_if_fail (p != NULL, 0);
-
- c = g_utf8_get_char (p);
- *inp = g_unichar_validate (c) ? g_utf8_next_char (p) : NULL;
-
- return c;
-}
-
-static const char *
-camel_ustrstrcase (const char *haystack, const char *needle)
-{
- gunichar *nuni, *puni;
- gunichar u;
- const char *p;
-
- g_return_val_if_fail (haystack != NULL, NULL);
- g_return_val_if_fail (needle != NULL, NULL);
-
- if (strlen (needle) == 0)
- return haystack;
- if (strlen (haystack) == 0)
- return NULL;
-
- puni = nuni = alloca (sizeof (gunichar) * strlen (needle));
-
- p = needle;
- while ((u = utf8_get (&p)))
- *puni++ = g_unichar_tolower (u);
-
- /* NULL means there was illegal utf-8 sequence */
- if (!p)
- return NULL;
-
- p = haystack;
- while ((u = utf8_get (&p))) {
- gunichar c;
-
- c = g_unichar_tolower (u);
- /* We have valid stripped char */
- if (c == nuni[0]) {
- const gchar *q = p;
- gint npos = 1;
-
- while (nuni + npos < puni) {
- u = utf8_get (&q);
- if (!q || !u)
- return NULL;
-
- c = g_unichar_tolower (u);
- if (c != nuni[npos])
- break;
-
- npos++;
- }
-
- if (nuni + npos == puni)
- return p;
- }
- }
-
- return NULL;
-}
-
-#define CAMEL_SEARCH_COMPARE(x, y, z) G_STMT_START { \
- if ((x) == (z)) { \
- if ((y) == (z)) \
- return 0; \
- else \
- return -1; \
- } else if ((y) == (z)) \
- return 1; \
-} G_STMT_END
-
-static int
-camel_ustrcasecmp (const char *s1, const char *s2)
-{
- gunichar u1, u2 = 0;
-
- CAMEL_SEARCH_COMPARE (s1, s2, NULL);
-
- u1 = utf8_get (&s1);
- u2 = utf8_get (&s2);
- while (u1 && u2) {
- u1 = g_unichar_tolower (u1);
- u2 = g_unichar_tolower (u2);
- if (u1 < u2)
- return -1;
- else if (u1 > u2)
- return 1;
-
- u1 = utf8_get (&s1);
- u2 = utf8_get (&s2);
- }
-
- /* end of one of the strings ? */
- CAMEL_SEARCH_COMPARE (u1, u2, 0);
-
- /* if we have invalid utf8 sequence ? */
- CAMEL_SEARCH_COMPARE (s1, s2, NULL);
-
- return 0;
-}
-
-static int
-camel_ustrncasecmp (const char *s1, const char *s2, size_t len)
-{
- gunichar u1, u2 = 0;
-
- CAMEL_SEARCH_COMPARE (s1, s2, NULL);
-
- u1 = utf8_get (&s1);
- u2 = utf8_get (&s2);
- while (len > 0 && u1 && u2) {
- u1 = g_unichar_tolower (u1);
- u2 = g_unichar_tolower (u2);
- if (u1 < u2)
- return -1;
- else if (u1 > u2)
- return 1;
-
- len--;
- u1 = utf8_get (&s1);
- u2 = utf8_get (&s2);
- }
-
- if (len == 0)
- return 0;
-
- /* end of one of the strings ? */
- CAMEL_SEARCH_COMPARE (u1, u2, 0);
-
- /* if we have invalid utf8 sequence ? */
- CAMEL_SEARCH_COMPARE (s1, s2, NULL);
-
- return 0;
-}
-
-/* value is the match value suitable for exact match if required */
-static int
-header_match(const char *value, const char *match, camel_search_match_t how)
-{
- const char *p;
- int vlen, mlen;
-
- if (how == CAMEL_SEARCH_MATCH_SOUNDEX)
- return header_soundex (value, match);
-
- vlen = strlen(value);
- mlen = strlen(match);
- if (vlen < mlen)
- return FALSE;
-
- /* from dan the man, if we have mixed case, perform a case-sensitive match,
- otherwise not */
- p = match;
- while (*p) {
- if (isupper(*p)) {
- switch (how) {
- case CAMEL_SEARCH_MATCH_EXACT:
- return strcmp(value, match) == 0;
- case CAMEL_SEARCH_MATCH_CONTAINS:
- return strstr(value, match) != NULL;
- case CAMEL_SEARCH_MATCH_STARTS:
- return strncmp(value, match, mlen) == 0;
- case CAMEL_SEARCH_MATCH_ENDS:
- return strcmp(value + vlen - mlen, match) == 0;
- default:
- break;
- }
- return FALSE;
- }
- p++;
- }
-
- switch (how) {
- case CAMEL_SEARCH_MATCH_EXACT:
- return camel_ustrcasecmp(value, match) == 0;
- case CAMEL_SEARCH_MATCH_CONTAINS:
- return camel_ustrstrcase(value, match) != NULL;
- case CAMEL_SEARCH_MATCH_STARTS:
- return camel_ustrncasecmp(value, match, mlen) == 0;
- case CAMEL_SEARCH_MATCH_ENDS:
- return camel_ustrcasecmp(value + vlen - mlen, match) == 0;
- default:
- break;
- }
-
- return FALSE;
-}
-
-/* searhces for match inside value, if match is mixed case, hten use case-sensitive,
- else insensitive */
-gboolean
-camel_search_header_match (const char *value, const char *match, camel_search_match_t how, camel_search_t type)
-{
- const char *name, *addr;
- int truth = FALSE;
- CamelInternetAddress *cia;
- char *v;
-
- while (*value && isspace (*value))
- value++;
-
- switch(type) {
- case CAMEL_SEARCH_TYPE_ENCODED:
- v = header_decode_string(value, camel_charset_locale_name());
- truth = header_match(v, match, how);
- g_free(v);
- break;
- case CAMEL_SEARCH_TYPE_ASIS:
- truth = header_match(value, match, how);
- break;
- case CAMEL_SEARCH_TYPE_ADDRESS_ENCODED:
- case CAMEL_SEARCH_TYPE_ADDRESS:
- /* possible simple case to save some work if we can */
- if (header_match(value, match, how))
- return TRUE;
-
- /* Now we decode any addresses, and try asis matches on name and address parts */
- cia = camel_internet_address_new();
- if (type == CAMEL_SEARCH_TYPE_ADDRESS_ENCODED)
- camel_address_decode((CamelAddress *)cia, value);
- else
- camel_address_unformat((CamelAddress *)cia, value);
-
- if (camel_address_length((CamelAddress *)cia) == 1) {
- camel_internet_address_get(cia, 0, &name, &addr);
- truth = (name && header_match(name, match, how))
- || (addr && header_match(addr, match, how));
- }
- camel_object_unref((CamelObject *)cia);
- break;
- }
-
- return truth;
-}
-
-/* performs a 'slow' content-based match */
-/* there is also an identical copy of this in camel-filter-search.c */
-gboolean
-camel_search_message_body_contains (CamelDataWrapper *object, regex_t *pattern)
-{
- CamelDataWrapper *containee;
- int truth = FALSE;
- int parts, i;
-
- containee = camel_medium_get_content_object (CAMEL_MEDIUM (object));
-
- if (containee == NULL)
- return FALSE;
-
- /* TODO: I find it odd that get_part and get_content_object do not
- add a reference, probably need fixing for multithreading */
-
- /* using the object types is more accurate than using the mime/types */
- if (CAMEL_IS_MULTIPART (containee)) {
- parts = camel_multipart_get_number (CAMEL_MULTIPART (containee));
- for (i = 0; i < parts && truth == FALSE; i++) {
- CamelDataWrapper *part = (CamelDataWrapper *)camel_multipart_get_part (CAMEL_MULTIPART (containee), i);
- if (part)
- truth = camel_search_message_body_contains (part, pattern);
- }
- } else if (CAMEL_IS_MIME_MESSAGE (containee)) {
- /* for messages we only look at its contents */
- truth = camel_search_message_body_contains ((CamelDataWrapper *)containee, pattern);
- } else if (header_content_type_is(CAMEL_DATA_WRAPPER (containee)->mime_type, "text", "*")) {
- /* for all other text parts, we look inside, otherwise we dont care */
- CamelStreamMem *mem = (CamelStreamMem *)camel_stream_mem_new ();
-
- camel_data_wrapper_write_to_stream (containee, CAMEL_STREAM (mem));
- camel_stream_write (CAMEL_STREAM (mem), "", 1);
- truth = regexec (pattern, mem->buffer->data, 0, NULL, 0) == 0;
- camel_object_unref (CAMEL_OBJECT (mem));
- }
-
- return truth;
-}
-
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