114 lines
3.3 KiB
C
114 lines
3.3 KiB
C
/*
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mboxgrep - scan mailbox for messages matching a regular expression
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Copyright (C) 2006, 2023 Daniel Spiljar
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Mboxgrep is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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Mboxgrep is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with mboxgrep; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <config.h>
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#include <stdio.h>
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#include <string.h>
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#include <regex.h>
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#ifdef HAVE_LIBPCRE2
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# define PCRE2_CODE_UNIT_WIDTH 32
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# include <pcre2.h>
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#endif /* HAVE_LIBPCRE2 */
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#include "mboxgrep.h"
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#include "message.h"
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#include "wrap.h" /* xcalloc() et cetera */
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#ifdef HAVE_LIBPCRE2
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void
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pcre_init (void)
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{
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int errornumber;
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PCRE2_SIZE erroroffset;
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config.pcre_pattern =
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(pcre2_code *) pcre2_compile ((PCRE2_SPTR) config.regex_s, (PCRE2_SIZE) strlen (config.regex_s),
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(config.ignorecase ? PCRE2_CASELESS : 0),
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&errornumber, &erroroffset, NULL);
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if (config.pcre_pattern == NULL)
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{
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if (config.merr)
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{
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PCRE2_UCHAR buffer[256];
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pcre2_get_error_message (errornumber, buffer, sizeof(buffer));
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fprintf (stderr, "%s: PCRE2 compilation failed at offset %d: %s\n",
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APPNAME, (int) erroroffset, (char *) buffer);
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}
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exit (2);
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}
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config.match_data =
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(pcre2_match_data* ) pcre2_match_data_create_from_pattern (config.pcre_pattern, NULL);
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}
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void
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pcre_match (message_t * msg)
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{
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if (config.headers)
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config.res1 =
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pcre2_match ((pcre2_code *) config.pcre_pattern,
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(PCRE2_SPTR) msg->headers, (int) strlen (msg->headers), 0, 0, config.match_data, NULL);
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if (config.body)
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config.res2 =
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pcre2_match ((pcre2_code *) config.pcre_pattern,
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(PCRE2_SPTR) msg->body, (int) strlen (msg->body), 0, 0, config.match_data, NULL);
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config.res1 = config.res1 ^ 1;
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config.res2 = config.res2 ^ 1;
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}
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#endif /* HAVE_LIBPCRE2 */
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void
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regex_init (void)
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{
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int flag1 = 0, flag2 = 0;
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int errcode = 0;
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char errbuf[BUFSIZ];
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if (config.ignorecase)
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flag1 = REG_ICASE;
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if (config.regextype == REGEX_EXTENDED)
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flag2 = REG_EXTENDED;
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config.posix_pattern = (regex_t *) xmalloc (sizeof (regex_t));
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errcode = regcomp ((regex_t *) config.posix_pattern, config.regex_s,
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(flag1 | flag2 | REG_NEWLINE));
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if (0 != errcode)
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{
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if (config.merr)
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{
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regerror (errcode, (regex_t *) config.posix_pattern, errbuf,
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BUFSIZ);
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fprintf (stderr, "%s: %s: %s\n", APPNAME, config.regex_s, errbuf);
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}
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exit (2);
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}
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}
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void
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regex_match (message_t * msg)
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{
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if (config.headers)
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config.res1 = regexec ((regex_t *) config.posix_pattern,
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msg->headers, 0, NULL, 0);
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if (config.body)
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config.res2 = regexec ((regex_t *) config.posix_pattern,
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msg->body, 0, NULL, 0);
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}
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